Linux Kernel Patch v2.2, patch-2.2.5 (0/8)

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Thomas...@ciw.uni-karlsruhe.de

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Apr 5, 1999, 3:00:00 AM4/5/99
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Archive-name: v2.2/patch-2.2.5/part0

lines added deleted
linux/Documentation/Configure.help : 43 21 9
linux/Documentation/parport.txt : 8 1 1
linux/Documentation/stallion.txt : 250 133 35
linux/Makefile : 7 1 1
linux/arch/alpha/kernel/smp.c : 23 3 0
linux/arch/i386/kernel/ptrace.c : 8 1 1
linux/arch/sparc/kernel/process.c : 23 9 2
linux/arch/sparc/kernel/ptrace.c : 8 1 1
linux/arch/sparc/mm/srmmu.c : 78 10 26
linux/arch/sparc/mm/viking.S : 91 33 16
linux/arch/sparc64/kernel/ioctl32.c : 15 2 3
linux/arch/sparc64/kernel/ptrace.c : 8 1 1
linux/arch/sparc64/kernel/smp.c : 17 11 0
linux/arch/sparc64/mm/init.c : 17 3 3
linux/arch/sparc64/mm/ultra.S : 27 16 1
linux/drivers/block/floppy.c : 70 24 24
linux/drivers/block/rd.c : 8 0 2
linux/drivers/char/Config.in : 8 2 0
linux/drivers/char/Makefile : 14 8 0
linux/drivers/char/bttv.c : 8 2 0
linux/drivers/char/bw-qcam.c : 42 31 1
linux/drivers/char/istallion.c : 767 477 55
linux/drivers/char/misc.c : 7 1 0
linux/drivers/char/n_hdlc.c : 1151 1151 0
linux/drivers/char/stallion.c : 612 305 80
linux/drivers/char/synclink.c : 6989 6989 0
linux/drivers/fc4/soc.c : 7 0 1
linux/drivers/fc4/socal.c : 15 2 0
linux/drivers/net/hamradio/baycom_epp.c : 7 0 1
linux/drivers/net/myri_sbus.c : 7 0 1
linux/drivers/sbus/char/sab82532.c : 27 6 4
linux/drivers/scsi/ppa.c : 7 0 1
linux/drivers/sound/es1370.c : 91 13 9
linux/drivers/sound/es1371.c : 91 13 9
linux/drivers/sound/sonicvibes.c : 73 11 7
linux/drivers/video/fbcon.c : 8 1 1
linux/fs/adfs/inode.c : 124 35 29
linux/fs/adfs/super.c : 380 146 81
linux/fs/buffer.c : 7 1 0
linux/fs/ioctl.c : 24 10 4
linux/fs/lockd/svcsubs.c : 8 1 1
linux/fs/ncpfs/sock.c : 8 1 1
linux/fs/qnx4/file.c : 8 0 2
linux/fs/sysv/CHANGES : 63 18 8
linux/include/asm-alpha/mmu_context.h : 23 4 4
linux/include/asm-alpha/termios.h : 7 1 0
linux/include/asm-i386/termios.h : 7 1 0
linux/include/asm-i386/timex.h : 8 1 1
linux/include/asm-m68k/termios.h : 7 1 0
linux/include/asm-mips/termios.h : 7 1 0
linux/include/asm-ppc/termios.h : 7 1 0
linux/include/asm-sparc/mmu_context.h : 12 3 3
linux/include/asm-sparc/processor.h : 17 5 2
linux/include/asm-sparc/termios.h : 13 2 1
linux/include/asm-sparc/unistd.h : 14 3 1
linux/include/asm-sparc64/pgtable.h : 16 3 3
linux/include/asm-sparc64/smp.h : 18 10 1
linux/include/asm-sparc64/termios.h : 13 2 1
linux/include/asm-sparc64/unistd.h : 13 2 1
linux/include/linux/adfs_fs_sb.h : 10 4 0
linux/include/linux/hippidevice.h : 7 1 0
linux/include/linux/if_arp.h : 13 7 0
linux/include/linux/nfsd/nfsfh.h : 9 3 0
linux/include/linux/sched.h : 7 1 0
linux/include/linux/synclink.h : 243 243 0
linux/include/net/pkt_cls.h : 10 1 2
linux/include/net/sock.h : 33 4 9
linux/kernel/acct.c : 15 2 2
linux/kernel/fork.c : 107 45 20
linux/kernel/signal.c : 28 20 1
linux/net/appletalk/ddp.c : 29 5 3
linux/net/core/dev.c : 32 3 6
linux/net/core/filter.c : 10 1 2
linux/net/core/neighbour.c : 43 4 8
linux/net/core/sock.c : 69 14 23
linux/net/ipv4/af_inet.c : 16 2 1
linux/net/ipv4/devinet.c : 52 5 9
linux/net/ipv4/fib_hash.c : 41 4 7
linux/net/ipv4/fib_rules.c : 21 4 3
linux/net/ipv4/igmp.c : 33 6 5
linux/net/ipv4/ip_gre.c : 22 2 4
linux/net/ipv4/ip_output.c : 17 2 2
linux/net/ipv4/ip_sockglue.c : 34 6 5
linux/net/ipv4/ipconfig.c : 18 3 3
linux/net/ipv4/ipip.c : 42 4 7
linux/net/ipv4/ipmr.c : 21 4 3
linux/net/ipv4/route.c : 34 5 5
linux/net/ipv4/tcp_ipv4.c : 41 8 5
linux/net/ipv6/addrconf.c : 32 5 5
linux/net/ipv6/ipv6_sockglue.c : 21 4 3
linux/net/ipv6/mcast.c : 56 9 9
linux/net/ipv6/sit.c : 42 4 7
linux/net/ipv6/tcp_ipv6.c : 28 6 2
linux/net/netlink/af_netlink.c : 11 2 2
linux/net/sched/cls_api.c : 11 2 2
linux/net/sched/cls_fw.c : 60 13 9
linux/net/sched/cls_route.c : 72 13 12
linux/net/sched/cls_rsvp.h : 68 11 11
linux/net/sched/cls_u32.c : 69 11 11
linux/net/sched/estimator.c : 12 3 2
linux/net/sched/sch_prio.c : 11 2 2
linux/net/unix/af_unix.c : 9 1 1
linux/scripts/ksymoops/oops.c : 11 2 0
--
Thomas Koenig, Thomas...@ciw.uni-karlsruhe.de, ig...@dkauni2.bitnet.
The joy of engineering is to find a straight line on a double
logarithmic diagram.

Thomas...@ciw.uni-karlsruhe.de

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Apr 5, 1999, 3:00:00 AM4/5/99
to
Archive-name: v2.2/patch-2.2.5/part1

#!/bin/sh
# This is a shell archive
# To extract the files from this archive, save it to a file, remove
# everything above the "!/bin/sh" line above, and type "sh file_name".
# existing files will NOT be overwritten unless -c is specified
#
# This is part 1 of a 8 - part archive
# do not concatenate these parts, unpack them in order with /bin/sh
#
if test -r _shar_seq_.tmp; then
echo 'Must unpack archives in sequence!'
echo Please unpack part `cat _shar_seq_.tmp` next
exit 1
fi
# ============= patch-2.2.5 ==============
if test -f 'patch-2.2.5' -a X"$1" != X"-c"; then
echo 'x - skipping patch-2.2.5 (File already exists)'
rm -f _shar_wnt_.tmp
else
> _shar_wnt_.tmp
echo 'x - extracting patch-2.2.5 (Text)'
sed 's/^X//' << 'SHAR_EOF' > 'patch-2.2.5' &&
diff -u --recursive --new-file v2.2.4/linux/Documentation/Configure.help linux/Documentation/Configure.help
--- v2.2.4/linux/Documentation/Configure.help Tue Mar 23 14:35:46 1999
+++ linux/Documentation/Configure.help Fri Mar 26 13:23:20 1999
@@ -7957,6 +7957,19 @@
X read Documentation/modules.txt. The module will be called
X istallion.o.
X
+Microgate SyncLink adapter support
+CONFIG_SYNCLINK
+ Provides support for the SyncLink ISA and PCI
+ multiprotocol serial adapters. These adapters
+ support asynchronous and HDLC bit synchronous
+ communication up to 10Mbps (PCI adapter)
+
+Synchronous HDLC line discipline support
+CONFIG_N_HDLC
+ Allows synchronous HDLC communications with
+ tty device drivers that support synchronous
+ HDLC such as the Microgate SyncLink adapter.
+
X Hayes ESP serial port support
X CONFIG_ESPSERIAL
X This is a driver which supports Hayes ESP serial ports. Both single
@@ -8029,15 +8042,14 @@
X removed from the running kernel whenever you want), say M here and
X read Documentation/modules.txt. The module will be called lp.o.
X
- If you have several parallel ports, you should specify the base
- address for the port to be used by the printer with the "lp" kernel
- command line option. (Try "man bootparam" or see the documentation
- of your boot loader (lilo or loadlin) about how to pass options to
- the kernel at boot time. The lilo procedure is also explained in the
- SCSI-HOWTO, available via FTP (user: anonymous) in
- ftp://metalab.unc.edu/pub/Linux/docs/HOWTO.) The standard base
- addresses as well as the syntax of the "lp" command line option can
- be found in drivers/char/lp.c.
+ If you have several parallel ports, you can specify which ports to
+ use with the "lp" kernel command line option. (Try "man bootparam"
+ or see the documentation of your boot loader (lilo or loadlin)
+ about how to pass options to the kernel at boot time. The lilo
+ procedure is also explained in the SCSI-HOWTO, available via FTP
+ (user: anonymous) in ftp://metalab.unc.edu/pub/Linux/docs/HOWTO.)
+ The syntax of the "lp" command line option can be found in
+ drivers/char/lp.c.
X
X If you have more than 3 printers, you need to increase the LP_NO
X variable in lp.c.
diff -u --recursive --new-file v2.2.4/linux/Documentation/parport.txt linux/Documentation/parport.txt
--- v2.2.4/linux/Documentation/parport.txt Tue Jul 21 00:15:29 1998
+++ linux/Documentation/parport.txt Fri Mar 26 13:23:24 1999
@@ -87,7 +87,7 @@
X If you have configured the /proc filesystem into your kernel, you will
X see a new directory entry: /proc/parport. In there will be a
X directory entry for each parallel port for which parport is
-configured. In each of those directories are three files describing
+configured. In each of those directories are four files describing
X that parallel port. For example:
X
X File: Contents:
diff -u --recursive --new-file v2.2.4/linux/Documentation/stallion.txt linux/Documentation/stallion.txt
--- v2.2.4/linux/Documentation/stallion.txt Fri Oct 23 22:01:19 1998
+++ linux/Documentation/stallion.txt Sun Mar 28 09:02:27 1999
@@ -2,10 +2,10 @@
X Stallion Multiport Serial Driver Readme
X ---------------------------------------
X
-Copyright (C) 1994-1998, Stallion Technologies (sup...@stallion.com).
+Copyright (C) 1994-1999, Stallion Technologies (sup...@stallion.com).
X
-Version: 5.4.7
-Date: 23OCT98
+Version: 5.5.1
+Date: 28MAR99
X
X
X
@@ -15,28 +15,28 @@
X multiport serial boards. One is for the Stallion smart boards - that is
X EasyIO, EasyConnection 8/32 and EasyConnection 8/64-PCI, the other for
X the true Stallion intelligent multiport boards - EasyConnection 8/64
-(ISA and EISA), ONboard and Brumby.
+(ISA, EISA, MCA), EasyConnection/RA-PCI, ONboard and Brumby.
X
X If you are using any of the Stallion intelligent multiport boards (Brumby,
-ONboard, EasyConnection 8/64 (ISA or EISA)) with Linux you will need to
-get the driver utility package. This package is available at most of the
-Linux archive sites (and on CD-ROMs that contain these archives). The file
-will be called stallion-X.X.X.tar.gz where X.X.X will be the version
-number. In particular this package contains the board embedded executable
-images that are required for these boards. It also contains the downloader
-program. These boards cannot be used without this.
+ONboard, EasyConnection 8/64 (ISA, EISA, MCA), EasyConnection/RA-PCI) with
+Linux you will need to get the driver utility package. This package is
+available at most of the Linux archive sites (and on CD-ROMs that contain
+these archives). The file will be called stallion-X.X.X.tar.gz where X.X.X
+will be the version number. In particular this package contains the board
+embedded executable images that are required for these boards. It also
+contains the downloader program. These boards cannot be used without this.
X
X The Stallion Technologies ftp site, ftp.stallion.com, will always have
X the latest version of the driver utility package. Other sites that usually
X have the latest version are tsx-11.mit.edu, sunsite.unc.edu and their
X mirrors.
X
-ftp.stallion.com:/drivers/ata5/Linux/v544.tar.gz
-tsx-11.mit.edu:/pub/linux/packages/stallion/stallion-5.4.4.tar.gz
-sunsite.unc.edu:/pub/Linux/kernel/patches/serial/stallion-5.4.4.tar.gz
+ftp.stallion.com:/drivers/ata5/Linux/v550.tar.gz
+tsx-11.mit.edu:/pub/linux/packages/stallion/stallion-5.5.0.tar.gz
+sunsite.unc.edu:/pub/Linux/kernel/patches/serial/stallion-5.5.0.tar.gz
X
X As of the printing of this document the latest version of the driver
-utility package is 5.4.4. If a later version is now available then you
+utility package is 5.5.0. If a later version is now available then you
X should use the latest version.
X
X If you are using the EasyIO, EasyConnection 8/32 or EasyConnection 8/64-PCI
@@ -44,7 +44,7 @@
X script to create the /dev device nodes for these boards, and a serial stats
X display program.
X
-If you require DIP switch settings, EISA/MCA configuration files, or any
+If you require DIP switch settings, EISA or MCA configuration files, or any
X other information related to Stallion boards then have a look at Stallion's
X web pages at http://www.stallion.com.
X
@@ -55,12 +55,101 @@
X The drivers can be used as loadable modules or compiled into the kernel.
X You can choose which when doing a "config" on the kernel.
X
-All ISA, EISA and MCA boards that you want to use need to be entered into
-the driver(s) configuration structures. All PCI boards will be automatically
-detected when you load the driver - so they do not need to be entered into
-the driver(s) configuration structure. (Note that kernel PCI BIOS32 support
-is required to use PCI boards.)
+All ISA, EISA and MCA boards that you want to use need to be configured into
+the driver(s). All PCI boards will be automatically detected when you load
+the driver - so they do not need to be entered into the driver(s)
+configuration structure. Note that kernel PCI support is required to use PCI
+boards.
X
+There are two methods of configuring ISA, EISA and MCA boards into the drivers.
+If using the driver as a loadable module then the simplist method is to pass
+the driver configuration as module arguments. The other method is to modify
+the driver source to add configuration lines for each board in use.
+
+If you have pre-built Stallion driver modules then the module argument
+configuration method should be used. A lot of Linux distributions come with
+pre-built driver modules in /lib/modules/X.Y.Z/misc for the kernel in use.
+That makes things pretty simple to get going.
+
+
+2.1 MODULE DRIVER CONFIGURATION:
+
+The simplest configuration for modules is to use the module load arguments
+to configure any ISA, EISA or MCA boards. PCI boards are automatically
+detected, so do not need any additional configuration at all.
+
+If using EasyIO, EasyConnection 8/32 ISA or MCA, or EasyConnection 8/63-PCI
+boards then use the "stallion" driver module, Otherwise if you are using
+an EasyConnection 8/64 ISA, EISA or MCA, EasyConnection/RA-PCI, ONboard,
+Brumby or original Stallion board then use the "istallion" driver module.
+
+Typically to load up the smart board driver use:
+
+ insmod stallion.o
+
+This will load the EasyIO and EasyConnection 8/32 driver. It will output a
+message to say that it loaded and print the driver version number. It will
+also print out whether it found the configured boards or not. These messages
+may not appear on the console, but typically are always logged to
+/var/adm/messages or /var/log/syslog files - depending on how the klogd and
+syslogd daemons are setup on your system.
+
+To load the intelligent board driver use:
+
+ insmod istallion.o
+
+It will output similar messages to the smart board driver.
+
+If not using an auto-detectable board type (that is a PCI board) then you
+will also need to supply command line arguments to the "insmod" command
+when loading the driver. The general form of the configuration argument is
+
+ board?=<name>[,<ioaddr>[,<addr>][,<irq>]]
+
+where:
+
+ board? -- specifies the arbitary board number of this board,
+ can be in the range 0 to 3.
+
+ name -- textual name of this board. The board name is the comman
+ board name, or any "shortened" version of that. The board
+ type number may also be used here.
+
+ ioaddr -- specifies the I/O address of this board. This argument is
+ optional, but should generally be specified.
+
+ addr -- optional second address argument. Some board types require
+ a second I/O address, some require a memory address. The
+ exact meaning of this argument depends on the board type.
+
+ irq -- optional IRQ line used by this board.
+
+Up to 4 board configuration arguments can be specified on the load line.
+Here is some examples:
+
+ insmod stallion.o board0=easyio,0x2a0,5
+
+This configures an EasyIO board as board 0 at I/O address 0x2a0 and IRQ 5.
+
+ insmod istallion.o board3=ec8/64,0x2c0,0xcc000
+
+This configures an EasyConnection 8/64 ISA as board 3 at I/O address 0x2c0 at
+memory address 0xcc000.
+
+ insmod stallion.o board1=ec8/32-at,0x2a0,0x280,10
+
+This configures an EasyConnection 8/32 ISA board at primary I/O address 0x2a0,
+secondary address 0x280 and IRQ 10.
+
+You will probably want to enter this module load and configuration information
+into your system startup scripts so that the drivers are loaded and configured
+on each system boot. Typically the start up script would be something line
+/etc/rc.d/rc.modules.
+
+
+2.2 STATIC DRIVER CONFIGURATION:
+
+For static driver configuration you need to modify the driver source code.
X Entering ISA, EISA and MCA boards into the driver(s) configuration structure
X involves editing the driver(s) source file. It's pretty easy if you follow
X the instructions below. Both drivers can support up to 4 boards. The smart
@@ -96,14 +185,16 @@
X driver will emit some kernel trace messages about whether the configured
X boards were detected or not. Depending on how your system logger is set
X up these may come out on the console, or just be logged to
-/var/adm/messages. You should check the messages to confirm that all is well.
+/var/adm/messages or /var/log/syslog. You should check the messages to
+confirm that all is well.
X
X
-2.1 SHARING INTERRUPTS
+2.3 SHARING INTERRUPTS
X
X It is possible to share interrupts between multiple EasyIO and
-EasyConnection 8/32 boards in an EISA system. To do this you will need to
-do a couple of things:
+EasyConnection 8/32 boards in an EISA system. To do this you must be using
+static driver configuration, modifying the driver source code to add driver
+configuration. Then a couple of extra things are required:
X
X 1. When entering the board resources into the stallion.c file you need to
X mark the boards as using level triggered interrupts. Do this by replacing
@@ -130,7 +221,7 @@
X sharing interrupts.
X
X
-2.2 USING HIGH SHARED MEMORY
+2.4 USING HIGH SHARED MEMORY
X
X The EasyConnection 8/64-EI, ONboard and Stallion boards are capable of
X using shared memory addresses above the usual 640K - 1Mb range. The ONboard
@@ -145,16 +236,18 @@
X
X
X
-2.3 TROUBLE SHOOTING
+2.5 TROUBLE SHOOTING
X
X If a board is not found by the driver but is actually in the system then the
-most likely problem is that the I/O address is wrong. Change it in the driver
-stallion.c or istallion.c configuration structure and rebuild the kernel or
-modules, or change it on the board. On EasyIO and EasyConnection 8/32 boards
-the IRQ is software programmable, so if there is a conflict you may need to
-change the IRQ used for a board in the stallion.c configuration structure.
-There are no interrupts to worry about for ONboard, Brumby or EasyConnection
-8/64 (ISA, EISA and MCA) boards. The memory region on EasyConnection 8/64 and
+most likely problem is that the I/O address is wrong. Change the module load
+argument for the loadable module form. Or change it in the driver stallion.c
+or istallion.c configuration structure and rebuild the kernel or modules, or
+change it on the board.
+
+On EasyIO and EasyConnection 8/32 boards the IRQ is software programmable, so
+if there is a conflict you may need to change the IRQ used for a board. There
+are no interrupts to worry about for ONboard, Brumby or EasyConnection 8/64
+(ISA, EISA and MCA) boards. The memory region on EasyConnection 8/64 and
X ONboard boards is software programmable, but not on the Brumby boards.
X
X
@@ -167,9 +260,13 @@
X to them. This is done via a user level application supplied in the driver
X utility package called "stlload". Compile this program wherever you dropped
X the package files, by typing "make". In its simplest form you can then type
+
X ./stlload -i cdk.sys
+
X in this directory and that will download board 0 (assuming board 0 is an
-EasyConnection 8/64 board). To download to an ONboard, Brumby or Stallion do:
+EasyConnection 8/64 or EasyConnection/RA board). To download to an
+ONboard, Brumby or Stallion do:
+
X ./stlload -i 2681.sys
X
X Normally you would want all boards to be downloaded as part of the standard
@@ -182,6 +279,7 @@
X and put the cdk.sys and 2681.sys files in it. (It's a convenient place to put
X them anyway). As an example your /etc/rc.d/rc.S file might have the
X following lines added to it (if you had 3 boards):
+
X /usr/sbin/stlload -b 0 -i /usr/lib/stallion/cdk.sys
X /usr/sbin/stlload -b 1 -i /usr/lib/stallion/2681.sys
X /usr/sbin/stlload -b 2 -i /usr/lib/stallion/2681.sys
diff -u --recursive --new-file v2.2.4/linux/Makefile linux/Makefile
--- v2.2.4/linux/Makefile Tue Mar 23 14:35:46 1999
+++ linux/Makefile Tue Mar 23 14:48:17 1999
@@ -1,6 +1,6 @@
X VERSION = 2
X PATCHLEVEL = 2
-SUBLEVEL = 4
+SUBLEVEL = 5
X EXTRAVERSION =
X
X ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e s/arm.*/arm/ -e s/sa110/arm/)
diff -u --recursive --new-file v2.2.4/linux/arch/alpha/kernel/smp.c linux/arch/alpha/kernel/smp.c
--- v2.2.4/linux/arch/alpha/kernel/smp.c Tue Jan 19 11:32:50 1999
+++ linux/arch/alpha/kernel/smp.c Sun Mar 28 22:36:32 1999
@@ -499,6 +499,7 @@
X return;
X }
X mdelay(1);
+ barrier();
X }
X DBGS(("secondary_cpu_start: SUCCESS for CPU %d!!!\n", cpuid));
X }
@@ -541,6 +542,7 @@
X if (!(hwrpb->txrdy & cpumask))
X goto ready1;
X udelay(100);
+ barrier();
X }
X goto timeout;
X
@@ -549,6 +551,7 @@
X if (!(hwrpb->txrdy & cpumask))
X goto ready2;
X udelay(100);
+ barrier();
X }
X goto timeout;
X
diff -u --recursive --new-file v2.2.4/linux/arch/i386/kernel/ptrace.c linux/arch/i386/kernel/ptrace.c
--- v2.2.4/linux/arch/i386/kernel/ptrace.c Tue Mar 23 14:35:46 1999
+++ linux/arch/i386/kernel/ptrace.c Wed Mar 24 13:18:46 1999
@@ -386,7 +386,7 @@
X (current->uid != child->uid) ||
X (current->gid != child->egid) ||
X (current->gid != child->sgid) ||
- (cap_issubset(child->cap_permitted, current->cap_permitted)) ||
+ (!cap_issubset(child->cap_permitted, current->cap_permitted)) ||
X (current->gid != child->gid)) && !capable(CAP_SYS_PTRACE))
X goto out;
X /* the same process cannot be attached many times */
diff -u --recursive --new-file v2.2.4/linux/arch/sparc/kernel/process.c linux/arch/sparc/kernel/process.c
--- v2.2.4/linux/arch/sparc/kernel/process.c Tue Mar 23 14:35:46 1999
+++ linux/arch/sparc/kernel/process.c Thu Mar 25 09:23:33 1999
@@ -1,4 +1,4 @@
-/* $Id: process.c,v 1.132 1999/03/22 02:12:13 davem Exp $
+/* $Id: process.c,v 1.133 1999/03/24 11:42:30 davem Exp $
X * linux/arch/sparc/kernel/process.c
X *
X * Copyright (C) 1995 David S. Miller (da...@caip.rutgers.edu)
@@ -517,9 +517,16 @@
X p->tss.kregs = childregs;
X
X if(regs->psr & PSR_PS) {
- childregs->u_regs[UREG_FP] = p->tss.ksp;
+ new_stack = (struct reg_window *)
+ ((((unsigned long)p) +
+ (TASK_UNION_SIZE)) -
+ (REGWIN_SZ));
+ childregs->u_regs[UREG_FP] = (unsigned long) new_stack;
X p->tss.flags |= SPARC_FLAG_KTHREAD;
X p->tss.current_ds = KERNEL_DS;
+ memcpy((void *)new_stack,
+ (void *)regs->u_regs[UREG_FP],
+ sizeof(struct reg_window));
X childregs->u_regs[UREG_G6] = (unsigned long) p;
X } else {
X childregs->u_regs[UREG_FP] = sp;
diff -u --recursive --new-file v2.2.4/linux/arch/sparc/kernel/ptrace.c linux/arch/sparc/kernel/ptrace.c
--- v2.2.4/linux/arch/sparc/kernel/ptrace.c Tue Mar 23 14:35:46 1999
+++ linux/arch/sparc/kernel/ptrace.c Wed Mar 24 15:10:40 1999
@@ -542,7 +542,7 @@
X (current->uid != child->uid) ||
X (current->gid != child->egid) ||
X (current->gid != child->sgid) ||
- (cap_issubset(child->cap_permitted, current->cap_permitted)) ||
+ (!cap_issubset(child->cap_permitted, current->cap_permitted)) ||
X (current->gid != child->gid)) && !capable(CAP_SYS_PTRACE)) {
X pt_error_return(regs, EPERM);
X goto out;
diff -u --recursive --new-file v2.2.4/linux/arch/sparc/mm/srmmu.c linux/arch/sparc/mm/srmmu.c
--- v2.2.4/linux/arch/sparc/mm/srmmu.c Tue Mar 23 14:35:47 1999
+++ linux/arch/sparc/mm/srmmu.c Thu Mar 25 09:23:33 1999
@@ -1,4 +1,4 @@
-/* $Id: srmmu.c,v 1.184 1999/03/20 22:02:03 davem Exp $
+/* $Id: srmmu.c,v 1.185 1999/03/24 11:42:35 davem Exp $
X * srmmu.c: SRMMU specific routines for memory management.
X *
X * Copyright (C) 1995 David S. Miller (da...@caip.rutgers.edu)
@@ -817,19 +817,11 @@
X
X static void srmmu_switch_to_context(struct task_struct *tsk)
X {
- int set = 0;
-
X if(tsk->mm->context == NO_CONTEXT) {
X alloc_context(tsk->mm);
- flush_cache_mm(tsk->mm);
X ctxd_set(&srmmu_context_table[tsk->mm->context], tsk->mm->pgd);
- flush_tlb_mm(tsk->mm);
- set = 1;
- } else if(tsk->mm != current->mm)
- set = 1;
-
- if(set != 0)
- srmmu_set_context(tsk->mm->context);
+ }
+ srmmu_set_context(tsk->mm->context);
X }
X
X static void srmmu_init_new_context(struct mm_struct *mm)
@@ -1353,7 +1345,7 @@
X static void viking_update_rootmmu_dir(struct task_struct *tsk, pgd_t *pgdp)
X {
X if(pgdp != swapper_pg_dir)
- viking_flush_page((unsigned long)pgdp);
+ flush_chunk((unsigned long)pgdp);
X if(tsk->mm->context != NO_CONTEXT &&
X tsk->mm->pgd != pgdp) {
X flush_cache_mm(tsk->mm);
@@ -1402,8 +1394,6 @@
X
X static void hypersparc_switch_to_context(struct task_struct *tsk)
X {
- int set = 0;
-
X if(tsk->mm->context == NO_CONTEXT) {
X ctxd_t *ctxp;
X
@@ -1411,14 +1401,9 @@
X ctxp = &srmmu_context_table[tsk->mm->context];
X srmmu_set_entry((pte_t *)ctxp, __pte((SRMMU_ET_PTD | (srmmu_v2p((unsigned long) tsk->mm->pgd) >> 4))));
X hypersparc_flush_page_to_ram((unsigned long)ctxp);
- set = 1;
- } else if(tsk->mm != current->mm)
- set = 1;
-
- if(set != 0) {
- hyper_flush_whole_icache();
- srmmu_set_context(tsk->mm->context);
X }
+ hyper_flush_whole_icache();
+ srmmu_set_context(tsk->mm->context);
X }
X
X static void hypersparc_init_new_context(struct mm_struct *mm)
@@ -2739,11 +2724,10 @@
X BTFIXUPSET_CALL(flush_page_for_dma, viking_flush_page_for_dma, BTFIXUPCALL_NOP);
X }
X
- /* flush_cache_* are nops */
- BTFIXUPSET_CALL(flush_cache_all, viking_flush_cache_all, BTFIXUPCALL_NOP);
- BTFIXUPSET_CALL(flush_cache_mm, viking_flush_cache_mm, BTFIXUPCALL_NOP);
- BTFIXUPSET_CALL(flush_cache_page, viking_flush_cache_page, BTFIXUPCALL_NOP);
- BTFIXUPSET_CALL(flush_cache_range, viking_flush_cache_range, BTFIXUPCALL_NOP);
+ BTFIXUPSET_CALL(flush_cache_all, viking_flush_cache_all, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_cache_mm, viking_flush_cache_mm, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_cache_page, viking_flush_cache_page, BTFIXUPCALL_NORM);
+ BTFIXUPSET_CALL(flush_cache_range, viking_flush_cache_range, BTFIXUPCALL_NORM);
X
X #ifdef __SMP__
X if (sparc_cpu_model == sun4d) {
diff -u --recursive --new-file v2.2.4/linux/arch/sparc/mm/viking.S linux/arch/sparc/mm/viking.S
--- v2.2.4/linux/arch/sparc/mm/viking.S Tue Mar 23 14:35:47 1999
+++ linux/arch/sparc/mm/viking.S Thu Mar 25 09:23:33 1999
@@ -1,4 +1,4 @@
-/* $Id: viking.S,v 1.12 1999/02/23 13:23:50 jj Exp $
+/* $Id: viking.S,v 1.13 1999/03/24 11:42:32 davem Exp $
X * viking.S: High speed Viking cache/mmu operations
X *
X * Copyright (C) 1997 Eddie C. Dost (e...@skynet.be)
@@ -67,7 +67,7 @@
X clr %o1 ! set counter, 0 - 127
X sethi %hi(KERNBASE + PAGE_SIZE - 0x80000000), %o3
X sethi %hi(0x80000000), %o4
- sethi %hi(VIKING_PTAG_VALID | VIKING_PTAG_DIRTY), %o5
+ sethi %hi(VIKING_PTAG_VALID), %o5
X sethi %hi(2*PAGE_SIZE), %o0
X sethi %hi(PAGE_SIZE), %g7
X clr %o2 ! block counter, 0 - 3
@@ -80,15 +80,12 @@
X or %g5, %g4, %g5
X ldda [%g5] ASI_M_DATAC_TAG, %g2
X cmp %g3, %g1 ! ptag == ppage?
- bne,a 7f
+ bne 7f
X inc %o2
X
- and %g2, %o5, %g3 ! ptag VALID and DIRTY?
- cmp %g3, %o5
- bne,a 7f
- inc %o2
-
- add %g4, %o3, %g2 ! (KERNBASE + PAGE_SIZE) | (set << 5)
+ andcc %g2, %o5, %g0 ! ptag VALID?
+ be 7f
+ add %g4, %o3, %g2 ! (KERNBASE + PAGE_SIZE) | (set << 5)
X ld [%g2], %g3
X ld [%g2 + %g7], %g3
X add %g2, %o0, %g2
@@ -99,18 +96,15 @@
X ld [%g2 + %g7], %g3
X add %g2, %o0, %g2
X ld [%g2], %g3
- ld [%g2 + %g7], %g3
-
X b 8f
- inc %o1
+ ld [%g2 + %g7], %g3
X
X 7:
X cmp %o2, 3
X ble 6b
X sll %o2, 26, %g5 ! block << 26
X
- inc %o1
-8:
+8: inc %o1
X cmp %o1, 0x7f
X ble 5b
X clr %o2
@@ -148,10 +142,33 @@
X retl
X nop
X
-viking_flush_cache_all:
+#define WINDOW_FLUSH(tmp1, tmp2) \
+ mov 0, tmp1; \
+98: ld [%g6 + AOFF_task_tss + AOFF_thread_uwinmask], tmp2; \
+ orcc %g0, tmp2, %g0; \
+ add tmp1, 1, tmp1; \
+ bne 98b; \
+ save %sp, -64, %sp; \
+99: subcc tmp1, 1, tmp1; \
+ bne 99b; \
+ restore %g0, %g0, %g0;
+
+viking_flush_cache_page:
+#ifndef __SMP__
+ ld [%o0 + 0x0], %o0 /* XXX vma->vm_mm, GROSS XXX */
+#endif
X viking_flush_cache_mm:
X viking_flush_cache_range:
-viking_flush_cache_page:
+#ifndef __SMP__
+ ld [%o0 + AOFF_mm_context], %g1
+ cmp %g1, -1
+ bne viking_flush_cache_all
+ nop
+ b,a viking_flush_cache_out
+#endif
+viking_flush_cache_all:
+ WINDOW_FLUSH(%g4, %g5)
+viking_flush_cache_out:
X retl
X nop
X
diff -u --recursive --new-file v2.2.4/linux/arch/sparc64/kernel/ioctl32.c linux/arch/sparc64/kernel/ioctl32.c
--- v2.2.4/linux/arch/sparc64/kernel/ioctl32.c Tue Mar 23 14:35:47 1999
+++ linux/arch/sparc64/kernel/ioctl32.c Thu Mar 25 09:23:34 1999
@@ -1,4 +1,4 @@
-/* $Id: ioctl32.c,v 1.59 1999/03/12 13:30:21 jj Exp $
+/* $Id: ioctl32.c,v 1.60 1999/03/22 10:40:54 jj Exp $
X * ioctl32.c: Conversion between 32bit and 64bit native ioctls.
X *
X * Copyright (C) 1997 Jakub Jelinek (j...@sunsite.mff.cuni.cz)
@@ -577,8 +577,7 @@
X cmap.transp = kmalloc(cmap.len * sizeof(__u16), GFP_KERNEL);
X if (!cmap.transp)
X goto out;
- } else
- cmap.transp = NULL;
+ }
X
X if (cmd == FBIOGETCMAP)
X break;
diff -u --recursive --new-file v2.2.4/linux/arch/sparc64/kernel/ptrace.c linux/arch/sparc64/kernel/ptrace.c
--- v2.2.4/linux/arch/sparc64/kernel/ptrace.c Tue Mar 23 14:35:47 1999
+++ linux/arch/sparc64/kernel/ptrace.c Wed Mar 24 15:10:28 1999
@@ -605,7 +605,7 @@
X (current->uid != child->uid) ||
X (current->gid != child->egid) ||
X (current->gid != child->sgid) ||
- (cap_issubset(child->cap_permitted, current->cap_permitted)) ||
+ (!cap_issubset(child->cap_permitted, current->cap_permitted)) ||
X (current->gid != child->gid)) && !capable(CAP_SYS_PTRACE)) {
X pt_error_return(regs, EPERM);
X goto out;
diff -u --recursive --new-file v2.2.4/linux/arch/sparc64/kernel/smp.c linux/arch/sparc64/kernel/smp.c
--- v2.2.4/linux/arch/sparc64/kernel/smp.c Tue Mar 23 14:35:47 1999
+++ linux/arch/sparc64/kernel/smp.c Sun Mar 28 09:07:47 1999
@@ -347,6 +347,17 @@
X extern unsigned long xcall_tlbcachesync;
X extern unsigned long xcall_flush_cache_all;
X extern unsigned long xcall_report_regs;
+extern unsigned long xcall_receive_signal;
+
+void smp_receive_signal(int cpu)
+{
+ if(smp_processors_ready &&
+ (cpu_present_map & (1UL<<cpu)) != 0) {
+ u64 pstate, data0 = (((u64)&xcall_receive_signal) & 0xffffffff);
+ __asm__ __volatile__("rdpr %%pstate, %0" : "=r" (pstate));
+ xcall_deliver(data0, 0, 0, pstate, cpu);
+ }
+}
X
X void smp_report_regs(void)
X {
diff -u --recursive --new-file v2.2.4/linux/arch/sparc64/mm/init.c linux/arch/sparc64/mm/init.c
--- v2.2.4/linux/arch/sparc64/mm/init.c Tue Mar 23 14:35:47 1999
+++ linux/arch/sparc64/mm/init.c Sun Mar 28 09:07:47 1999
@@ -1,4 +1,4 @@
-/* $Id: init.c,v 1.124 1999/02/08 07:01:42 ecd Exp $
+/* $Id: init.c,v 1.125 1999/03/28 08:39:33 davem Exp $
X * arch/sparc64/mm/init.c
X *
X * Copyright (C) 1996-1999 David S. Miller (da...@caip.rutgers.edu)
@@ -142,9 +142,9 @@
X printk("%d reserved pages\n",reserved);
X printk("%d pages shared\n",shared);
X printk("%d pages swap cached\n",cached);
- printk("%ld pages in page table cache\n",pgtable_cache_size);
+ printk("%d pages in page table cache\n",pgtable_cache_size);
X #ifndef __SMP__
- printk("%ld entries in page dir cache\n",pgd_cache_size);
+ printk("%d entries in page dir cache\n",pgd_cache_size);
X #endif
X show_buffers();
X #ifdef CONFIG_NET
diff -u --recursive --new-file v2.2.4/linux/arch/sparc64/mm/ultra.S linux/arch/sparc64/mm/ultra.S
--- v2.2.4/linux/arch/sparc64/mm/ultra.S Thu Nov 19 09:56:27 1998
+++ linux/arch/sparc64/mm/ultra.S Sun Mar 28 09:07:47 1999
@@ -1,4 +1,4 @@
-/* $Id: ultra.S,v 1.31 1998/11/07 06:39:21 davem Exp $
+/* $Id: ultra.S,v 1.32 1999/03/28 08:39:34 davem Exp $
X * ultra.S: Don't expand these all over the place...
X *
X * Copyright (C) 1997 David S. Miller (da...@caip.rutgers.edu)
@@ -260,6 +260,21 @@
X nop
X b,pt %xcc, rtrap
X clr %l6
+
+ .globl xcall_receive_signal
+xcall_receive_signal:
+ rdpr %pstate, %g2
+ wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate
+ rdpr %tstate, %g1
+ andcc %g1, TSTATE_PRIV, %g0
+ /* If we did not trap from user space, just ignore. */
+ bne,pn %xcc, 99f
+ sethi %hi(109f), %g7
+ b,pt %xcc, etrap
+109: or %g7, %lo(109b), %g7
+ b,pt %xcc, rtrap
+ clr %l6
+99: retry
X
X /* These two are not performance critical... */
X .globl xcall_flush_tlb_all
diff -u --recursive --new-file v2.2.4/linux/drivers/block/floppy.c linux/drivers/block/floppy.c
--- v2.2.4/linux/drivers/block/floppy.c Wed Jan 13 15:00:41 1999
+++ linux/drivers/block/floppy.c Fri Mar 26 13:29:14 1999
@@ -3592,7 +3592,7 @@
X /* read drive info out of physical CMOS */
X drive=0;
X if (!UDP->cmos)
- UDP->cmos= FLOPPY0_TYPE;
+ UDP->cmos = FLOPPY0_TYPE;
X drive=1;
X if (!UDP->cmos && FLOPPY1_TYPE)
X UDP->cmos = FLOPPY1_TYPE;
@@ -3601,26 +3601,31 @@
X /* additional physical CMOS drive detection should go here */
X
X for (drive=0; drive < N_DRIVE; drive++){
- if (UDP->cmos >= 16)
- UDP->cmos = 0;
- if (UDP->cmos >= 0 && UDP->cmos <= NUMBER(default_drive_params))
- memcpy((char *) UDP,
- (char *) (&default_drive_params[(int)UDP->cmos].params),
- sizeof(struct floppy_drive_params));
- if (UDP->cmos){
- if (first)
- printk(KERN_INFO "Floppy drive(s): ");
- else
- printk(", ");
- first=0;
- if (UDP->cmos > 0){
+ unsigned int type = UDP->cmos;
+ struct floppy_drive_params *params;
+ const char *name = NULL;
+ static char temparea[32];
+
+ if (type < NUMBER(default_drive_params)) {
+ params = &default_drive_params[type].params;
+ if (type) {
+ name = default_drive_params[type].name;
X allowed_drive_mask |= 1 << drive;
- printk("fd%d is %s", drive,
- default_drive_params[(int)UDP->cmos].name);
- } else
- printk("fd%d is unknown type %d",drive,
- UDP->cmos);
+ }
+ } else {
+ params = &default_drive_params[0].params;
+ sprintf(temparea, "unknown type %d (usb?)", type);
+ name = temparea;
+ }
+ if (name) {
+ const char * prepend = ",";
+ if (first) {
+ prepend = KERN_INFO "Floppy drive(s):";
+ first = 0;
+ }
+ printk("%s fd%d is %s", prepend, drive, name);
X }
+ *UDP = *params;
X }
X if (!first)
X printk("\n");
@@ -4020,11 +4025,6 @@
X }
X if (current_drive >= 4 && !FDC2)
X FDC2 = 0x370;
- if (ints[2] <= 0 ||
- (ints[2] >= NUMBER(default_drive_params) && ints[2] != 16)){
- DPRINT("bad CMOS code %d\n", ints[2]);
- return;
- }
X DP->cmos = ints[2];
X DPRINT("setting CMOS code to %d\n", ints[2]);
X }
diff -u --recursive --new-file v2.2.4/linux/drivers/block/rd.c linux/drivers/block/rd.c
--- v2.2.4/linux/drivers/block/rd.c Wed Mar 10 15:29:45 1999
+++ linux/drivers/block/rd.c Fri Mar 26 13:57:41 1999
@@ -158,8 +158,6 @@
X
X static int rd_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
X {
- int err;
-
X if (!inode || !inode->i_rdev)
X return -EINVAL;
X
diff -u --recursive --new-file v2.2.4/linux/drivers/char/Config.in linux/drivers/char/Config.in
--- v2.2.4/linux/drivers/char/Config.in Wed Mar 10 15:29:45 1999
+++ linux/drivers/char/Config.in Wed Mar 24 11:46:00 1999
@@ -42,6 +42,8 @@
X if [ "$CONFIG_EXPERIMENTAL" = "y" ]; then
X dep_tristate 'Multi-Tech multiport card support' CONFIG_ISI m
X fi
+ dep_tristate 'Microgate SyncLink card support' CONFIG_SYNCLINK m
+ dep_tristate 'HDLC line discipline support' CONFIG_N_HDLC m
X fi
X bool 'Unix98 PTY support' CONFIG_UNIX98_PTYS
X if [ "$CONFIG_UNIX98_PTYS" = "y" ]; then
diff -u --recursive --new-file v2.2.4/linux/drivers/char/Makefile linux/drivers/char/Makefile
--- v2.2.4/linux/drivers/char/Makefile Tue Mar 23 14:35:47 1999
+++ linux/drivers/char/Makefile Wed Mar 24 11:46:00 1999
@@ -139,6 +139,14 @@
X endif
X endif
X
+ifeq ($(CONFIG_SYNCLINK),m)
+ M_OBJS += synclink.o
+endif
+
+ifeq ($(CONFIG_N_HDLC),m)
+ M_OBJS += n_hdlc.o
+endif
+
X ifeq ($(CONFIG_SPECIALIX),y)
X L_OBJS += specialix.o
X else
diff -u --recursive --new-file v2.2.4/linux/drivers/char/bttv.c linux/drivers/char/bttv.c
--- v2.2.4/linux/drivers/char/bttv.c Wed Mar 10 15:29:45 1999
+++ linux/drivers/char/bttv.c Fri Mar 26 13:57:41 1999
@@ -3751,6 +3751,8 @@
X
X #ifdef MODULE
X
+EXPORT_NO_SYMBOLS;
+
X int init_module(void)
X {
X #else
diff -u --recursive --new-file v2.2.4/linux/drivers/char/bw-qcam.c linux/drivers/char/bw-qcam.c
--- v2.2.4/linux/drivers/char/bw-qcam.c Tue Mar 23 14:35:47 1999
+++ linux/drivers/char/bw-qcam.c Fri Mar 26 13:57:41 1999
@@ -986,11 +986,41 @@
X kfree(qcam);
X }
X
+/* The parport parameter controls which parports will be scanned.
+ * Scanning all parports causes some printers to print a garbage page.
+ * -- March 14, 1999 Billy Donahue <bi...@escape.com> */
+#ifdef MODULE
+static char *parport[MAX_CAMS] = { NULL, };
+MODULE_PARM(parport, "1-" __MODULE_STRING(MAX_CAMS) "s");
+#endif
+
X #ifdef MODULE
X int init_module(void)
X {
X struct parport *port;
-
+ int n;
+ if(parport[0] && strncmp(parport[0], "auto", 4)){
+ /* user gave parport parameters */
+ for(n=0; parport[n] && n<MAX_CAMS; n++){
+ char *ep;
+ unsigned long r;
+ r = simple_strtoul(parport[n], &ep, 0);
+ if(ep == parport[n]){
+ printk(KERN_ERR
+ "bw-qcam: bad port specifier \"%s\"\n",
+ parport[n]);
+ continue;
+ }
+ for (port=parport_enumerate(); port; port=port->next){
+ if(r!=port->number)
+ continue;
+ init_bwqcam(port);
+ break;
+ }
+ }
+ return (num_cams)?0:-ENODEV;
+ }
+ /* no parameter or "auto" */
X for (port = parport_enumerate(); port; port=port->next)
X init_bwqcam(port);
X
diff -u --recursive --new-file v2.2.4/linux/drivers/char/istallion.c linux/drivers/char/istallion.c
--- v2.2.4/linux/drivers/char/istallion.c Thu Dec 31 10:29:00 1998
+++ linux/drivers/char/istallion.c Sun Mar 28 09:02:27 1999
@@ -3,7 +3,7 @@
X /*
X * istallion.c -- stallion intelligent multiport serial driver.
X *
- * Copyright (C) 1996-1998 Stallion Technologies (sup...@stallion.oz.au).
+ * Copyright (C) 1996-1999 Stallion Technologies (sup...@stallion.oz.au).
X * Copyright (C) 1994-1996 Greg Ungerer (ge...@stallion.oz.au).
X *
X * This code is loosely based on the Linux serial driver, written by
@@ -27,29 +27,24 @@
X /*****************************************************************************/
X
X #include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/sched.h>
-#include <linux/timer.h>
-#include <linux/wait.h>
+#include <linux/malloc.h>
X #include <linux/interrupt.h>
-#include <linux/termios.h>
-#include <linux/fcntl.h>
-#include <linux/tty_driver.h>
-#include <linux/tty.h>
X #include <linux/tty_flip.h>
X #include <linux/serial.h>
X #include <linux/cdk.h>
X #include <linux/comstats.h>
X #include <linux/istallion.h>
-#include <linux/string.h>
-#include <linux/malloc.h>
X #include <linux/ioport.h>
X #include <linux/delay.h>
X #include <linux/init.h>
-#include <asm/system.h>
+
X #include <asm/io.h>
X #include <asm/uaccess.h>
X
+#ifdef CONFIG_PCI
+#include <linux/pci.h>
+#endif
+
X /*****************************************************************************/
X
X /*
@@ -79,6 +74,7 @@
X #define BRD_ECHPCI 26
X #define BRD_ECH64PCI 27
X #define BRD_EASYIOPCI 28
+#define BRD_ECPPCI 29
X
X #define BRD_BRUMBY BRD_BRUMBY4
X
@@ -131,7 +127,7 @@
X } stlconf_t;
X
X static stlconf_t stli_brdconf[] = {
- { BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },
+ /*{ BRD_ECP, 0x2a0, 0, 0xcc000, 0, 0 },*/
X };
X
X static int stli_nrbrds = sizeof(stli_brdconf) / sizeof(stlconf_t);
@@ -170,7 +166,7 @@
X */
X static char *stli_drvtitle = "Stallion Intelligent Multiport Serial Driver";
X static char *stli_drvname = "istallion";
-static char *stli_drvversion = "5.4.7";
+static char *stli_drvversion = "5.5.1";
X static char *stli_serialname = "ttyE";
X static char *stli_calloutname = "cue";
X
@@ -296,8 +292,110 @@
X "EC8/32-PCI",
X "EC8/64-PCI",
X "EasyIO-PCI",
+ "EC/RA-PCI",
X };
X
+/*****************************************************************************/
+
+#ifdef MODULE
+/*
+ * Define some string labels for arguments passed from the module
+ * load line. These allow for easy board definitions, and easy
+ * modification of the io, memory and irq resoucres.
+ */
+
+static char *board0[8];
+static char *board1[8];
+static char *board2[8];
+static char *board3[8];
+
+static char **stli_brdsp[] = {
+ (char **) &board0,
+ (char **) &board1,
+ (char **) &board2,
+ (char **) &board3
+};
+
+/*
+ * Define a set of common board names, and types. This is used to
+ * parse any module arguments.
+ */
+
+typedef struct stlibrdtype {
+ char *name;
+ int type;
+} stlibrdtype_t;
+
+static stlibrdtype_t stli_brdstr[] = {
+ { "stallion", BRD_STALLION },
+ { "1", BRD_STALLION },
+ { "brumby", BRD_BRUMBY },
+ { "brumby4", BRD_BRUMBY },
+ { "brumby/4", BRD_BRUMBY },
+ { "brumby-4", BRD_BRUMBY },
+ { "brumby8", BRD_BRUMBY },
+ { "brumby/8", BRD_BRUMBY },
+ { "brumby-8", BRD_BRUMBY },
+ { "brumby16", BRD_BRUMBY },
+ { "brumby/16", BRD_BRUMBY },
+ { "brumby-16", BRD_BRUMBY },
+ { "2", BRD_BRUMBY },
+ { "onboard2", BRD_ONBOARD2 },
+ { "onboard-2", BRD_ONBOARD2 },
+ { "onboard/2", BRD_ONBOARD2 },
+ { "onboard-mc", BRD_ONBOARD2 },
+ { "onboard/mc", BRD_ONBOARD2 },
+ { "onboard-mca", BRD_ONBOARD2 },
+ { "onboard/mca", BRD_ONBOARD2 },
+ { "3", BRD_ONBOARD2 },
+ { "onboard", BRD_ONBOARD },
+ { "onboardat", BRD_ONBOARD },
+ { "4", BRD_ONBOARD },
+ { "onboarde", BRD_ONBOARDE },
+ { "onboard-e", BRD_ONBOARDE },
+ { "onboard/e", BRD_ONBOARDE },
+ { "onboard-ei", BRD_ONBOARDE },
+ { "onboard/ei", BRD_ONBOARDE },
+ { "7", BRD_ONBOARDE },
+ { "ecp", BRD_ECP },
+ { "ecpat", BRD_ECP },
+ { "ec8/64", BRD_ECP },
+ { "ec8/64-at", BRD_ECP },
+ { "ec8/64-isa", BRD_ECP },
+ { "23", BRD_ECP },
+ { "ecpe", BRD_ECPE },
+ { "ecpei", BRD_ECPE },
+ { "ec8/64-e", BRD_ECPE },
+ { "ec8/64-ei", BRD_ECPE },
+ { "24", BRD_ECPE },
+ { "ecpmc", BRD_ECPMC },
+ { "ec8/64-mc", BRD_ECPMC },
+ { "ec8/64-mca", BRD_ECPMC },
+ { "25", BRD_ECPMC },
+ { "ecppci", BRD_ECPPCI },
+ { "ec/ra", BRD_ECPPCI },
+ { "ec/ra-pc", BRD_ECPPCI },
+ { "ec/ra-pci", BRD_ECPPCI },
+ { "29", BRD_ECPPCI },
+};
+
+/*
+ * Define the module agruments.
+ */
+MODULE_AUTHOR("Greg Ungerer");
+MODULE_DESCRIPTION("Stallion Intelligent Multiport Serial Driver");
+
+MODULE_PARM(board0, "1-3s");
+MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,memaddr]");
+MODULE_PARM(board1, "1-3s");
+MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,memaddr]");
+MODULE_PARM(board2, "1-3s");
+MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,memaddr]");
+MODULE_PARM(board3, "1-3s");
+MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,memaddr]");
+
+#endif
+
X /*
X * Set up a default memory address table for EISA board probing.
X * The default addresses are all bellow 1Mbyte, which has to be the
@@ -317,18 +415,34 @@
X static int stli_eisamempsize = sizeof(stli_eisamemprobeaddrs) / sizeof(unsigned long);
X int stli_eisaprobe = STLI_EISAPROBE;
X
+/*
+ * Define the Stallion PCI vendor and device IDs.
+ */
+#ifdef CONFIG_PCI
+#ifndef PCI_VENDOR_ID_STALLION
+#define PCI_VENDOR_ID_STALLION 0x124d
+#endif
+#ifndef PCI_DEVICE_ID_ECRA
+#define PCI_DEVICE_ID_ECRA 0x0004
+#endif
+#endif
+
X /*****************************************************************************/
X
X /*
X * Hardware configuration info for ECP boards. These defines apply
X * to the directly accessible io ports of the ECP. There is a set of
- * defines for each ECP board type, ISA, EISA and MCA.
+ * defines for each ECP board type, ISA, EISA, MCA and PCI.
X */
X #define ECP_IOSIZE 4
+
X #define ECP_MEMSIZE (128 * 1024)
+#define ECP_PCIMEMSIZE (256 * 1024)
+
X #define ECP_ATPAGESIZE (4 * 1024)
-#define ECP_EIPAGESIZE (64 * 1024)
X #define ECP_MCPAGESIZE (4 * 1024)
+#define ECP_EIPAGESIZE (64 * 1024)
+#define ECP_PCIPAGESIZE (64 * 1024)
X
X #define STL_EISAID 0x8c4e
X
@@ -377,6 +491,14 @@
X #define ECP_MCDISABLE 0x00
X
X /*
+ * Important defines for the PCI class of ECP board.
+ * (It has a lot in common with the other ECP boards.)
+ */
+#define ECP_PCIIREG 0
+#define ECP_PCICONFR 1
+#define ECP_PCISTOP 0x01
+
+/*
X * Hardware configuration info for ONboard and Brumby boards. These
X * defines apply to the directly accessible io ports of these boards.
X */
@@ -516,7 +638,11 @@
X /*
X * Define some handy local macros...
X */
-#define MIN(a,b) (((a) <= (b)) ? (a) : (b))
+#undef MIN
+#define MIN(a,b) (((a) <= (b)) ? (a) : (b))
+
+#undef TOLOWER
+#define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x))
X
X /*****************************************************************************/
X
@@ -527,6 +653,10 @@
X #ifdef MODULE
X int init_module(void);
X void cleanup_module(void);
+static void stli_argbrds(void);
+static int stli_parsebrd(stlconf_t *confp, char **argp);
+
+static unsigned long stli_atol(char *str);
X #endif
X
X int stli_init(void);
@@ -583,6 +713,7 @@
X static int stli_getportstruct(unsigned long arg);
X static int stli_getbrdstruct(unsigned long arg);
X static void *stli_memalloc(int len);
+static stlibrd_t *stli_allocbrd(void);
X
X static void stli_ecpinit(stlibrd_t *brdp);
X static void stli_ecpenable(stlibrd_t *brdp);
@@ -599,6 +730,9 @@
X static void stli_ecpmcdisable(stlibrd_t *brdp);
X static char *stli_ecpmcgetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
X static void stli_ecpmcreset(stlibrd_t *brdp);
+static void stli_ecppciinit(stlibrd_t *brdp);
+static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line);
+static void stli_ecppcireset(stlibrd_t *brdp);
X
X static void stli_onbinit(stlibrd_t *brdp);
X static void stli_onbenable(stlibrd_t *brdp);
@@ -625,6 +759,12 @@
X static inline int stli_findeisabrds(void);
X static inline int stli_eisamemprobe(stlibrd_t *brdp);
X static inline int stli_initports(stlibrd_t *brdp);
+static inline int stli_getbrdnr(void);
+
+#ifdef CONFIG_PCI
+static inline int stli_findpcibrds(void);
+static inline int stli_initpcibrd(int brdtype, struct pci_dev *devp);
+#endif
X
X /*****************************************************************************/
X
@@ -741,8 +881,7 @@
X kfree_s(stli_txcookbuf, STLI_TXBUFSIZE);
X
X for (i = 0; (i < stli_nrbrds); i++) {
- brdp = stli_brds[i];
- if (brdp == (stlibrd_t *) NULL)
+ if ((brdp = stli_brds[i]) == (stlibrd_t *) NULL)
X continue;
X for (j = 0; (j < STL_MAXPORTS); j++) {
X portp = brdp->ports[j];
@@ -763,6 +902,114 @@
X restore_flags(flags);
X }
X
+/*****************************************************************************/
+
+/*
+ * Check for any arguments passed in on the module load command line.
+ */
+
+static void stli_argbrds()
+{
+ stlconf_t conf;
+ stlibrd_t *brdp;
+ int nrargs, i;
+
+#if DEBUG
+ printk("stli_argbrds()\n");
+#endif
+
+ nrargs = sizeof(stli_brdsp) / sizeof(char **);
+
+ for (i = stli_nrbrds; (i < nrargs); i++) {
+ memset(&conf, 0, sizeof(conf));
+ if (stli_parsebrd(&conf, stli_brdsp[i]) == 0)
+ continue;
+ if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
+ continue;
+ stli_nrbrds = i + 1;
+ brdp->brdnr = i;
+ brdp->brdtype = conf.brdtype;
+ brdp->iobase = conf.ioaddr1;
+ brdp->memaddr = conf.memaddr;
+ stli_brdinit(brdp);
+ }
+}
+
+/*****************************************************************************/
+
+/*
+ * Convert an ascii string number into an unsigned long.
+ */
+
+static unsigned long stli_atol(char *str)
+{
+ unsigned long val;
+ int base, c;
+ char *sp;
+
+ val = 0;
+ sp = str;
+ if ((*sp == '0') && (*(sp+1) == 'x')) {
+ base = 16;
+ sp += 2;
+ } else if (*sp == '0') {
+ base = 8;
+ sp++;
+ } else {
+ base = 10;
+ }
+
+ for (; (*sp != 0); sp++) {
+ c = (*sp > '9') ? (TOLOWER(*sp) - 'a' + 10) : (*sp - '0');
+ if ((c < 0) || (c >= base)) {
+ printk("STALLION: invalid argument %s\n", str);
+ val = 0;
+ break;
+ }
+ val = (val * base) + c;
+ }
+ return(val);
+}
+
+/*****************************************************************************/
+
+/*
+ * Parse the supplied argument string, into the board conf struct.
+ */
+
+static int stli_parsebrd(stlconf_t *confp, char **argp)
+{
+ char *sp;
+ int nrbrdnames, i;
+
+#if DEBUG
+ printk("stli_parsebrd(confp=%x,argp=%x)\n", (int) confp, (int) argp);
+#endif
+
+ if ((argp[0] == (char *) NULL) || (*argp[0] == 0))
+ return(0);
+
+ for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
+ *sp = TOLOWER(*sp);
+
+ nrbrdnames = sizeof(stli_brdstr) / sizeof(stlibrdtype_t);
+ for (i = 0; (i < nrbrdnames); i++) {
+ if (strcmp(stli_brdstr[i].name, argp[0]) == 0)
+ break;
+ }
+ if (i >= nrbrdnames) {
+ printk("STALLION: unknown board name, %s?\n", argp[0]);
+ return(0);
+ }
+
+ confp->brdtype = stli_brdstr[i].type;
+ if ((argp[1] != (char *) NULL) && (*argp[1] != 0))
+ confp->ioaddr1 = stli_atol(argp[1]);
+ if ((argp[2] != (char *) NULL) && (*argp[2] != 0))
+ confp->memaddr = stli_atol(argp[2]);
+ return(1);
+}
+
X #endif
X
X /*****************************************************************************/
@@ -1433,7 +1680,6 @@
X
X down(&stli_tmpwritesem);
X copy_from_user(stli_tmpwritebuf, chbuf, count);
- up(&stli_tmpwritesem);
X chbuf = &stli_tmpwritebuf[0];
X }
X
@@ -1485,8 +1731,10 @@
X portp->portidx;
X *bits |= portp->portbit;
X set_bit(ST_TXBUSY, &portp->state);
-
X EBRDDISABLE(brdp);
+
+ if (from_user)
+ up(&stli_tmpwritesem);
X restore_flags(flags);
X
X return(count);
@@ -3363,6 +3611,60 @@
X /*****************************************************************************/
X
X /*
+ * The following set of functions act on ECP PCI boards.
+ */
+
+static void stli_ecppciinit(stlibrd_t *brdp)
+{
+#if DEBUG
+ printk("stli_ecppciinit(brdp=%x)\n", (int) brdp);
+#endif
+
+ outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
+ udelay(10);
+ outb(0, (brdp->iobase + ECP_PCICONFR));
+ udelay(500);
+}
+
+/*****************************************************************************/
+
+static char *stli_ecppcigetmemptr(stlibrd_t *brdp, unsigned long offset, int line)
+{
+ void *ptr;
+ unsigned char val;
+
+#if DEBUG
+ printk("stli_ecppcigetmemptr(brdp=%x,offset=%x,line=%d)\n",
+ (int) brdp, (int) offset, line);
+#endif
+
+ if (offset > brdp->memsize) {
+ printk("STALLION: shared memory pointer=%x out of range at "
+ "line=%d(%d), board=%d\n", (int) offset, line,
+ __LINE__, brdp->brdnr);
+ ptr = 0;
+ val = 0;
+ } else {
+ ptr = brdp->membase + (offset % ECP_PCIPAGESIZE);
+ val = (offset / ECP_PCIPAGESIZE) << 1;
+ }
+ outb(val, (brdp->iobase + ECP_PCICONFR));
+ return(ptr);
+}
+
+/*****************************************************************************/
+
+static void stli_ecppcireset(stlibrd_t *brdp)
+{
+ outb(ECP_PCISTOP, (brdp->iobase + ECP_PCICONFR));
+ udelay(10);
+ outb(0, (brdp->iobase + ECP_PCICONFR));
+ udelay(500);
+}
+
+/*****************************************************************************/
+
+/*
X * The following routines act on ONboards.
X */
X
@@ -3678,7 +3980,7 @@
X
X brdp->iosize = ECP_IOSIZE;
X if (check_region(brdp->iobase, brdp->iosize))
- printk("STALLION: Warning, unit %d I/O address %x conflicts "
+ printk("STALLION: Warning, board %d I/O address %x conflicts "
X "with another device\n", brdp->brdnr, brdp->iobase);
X
X /*
@@ -3729,6 +4031,20 @@
X name = "serial(EC8/64-MCA)";
X break;
X
+ case BRD_ECPPCI:
+ brdp->membase = (void *) brdp->memaddr;
+ brdp->memsize = ECP_PCIMEMSIZE;
+ brdp->pagesize = ECP_PCIPAGESIZE;
+ brdp->init = stli_ecppciinit;
+ brdp->enable = NULL;
+ brdp->reenable = NULL;
+ brdp->disable = NULL;
+ brdp->getmemptr = stli_ecppcigetmemptr;
+ brdp->intr = stli_ecpintr;
+ brdp->reset = stli_ecppcireset;
+ name = "serial(EC/RA-PCI)";
+ break;
+
X default:
X return(-EINVAL);
X }
@@ -3817,7 +4133,7 @@
X
X brdp->iosize = ONB_IOSIZE;
X if (check_region(brdp->iobase, brdp->iosize))
- printk("STALLION: Warning, unit %d I/O address %x conflicts "
+ printk("STALLION: Warning, board %d I/O address %x conflicts "
X "with another device\n", brdp->brdnr, brdp->iobase);
X
X /*
@@ -4082,6 +4398,7 @@
X case BRD_ECP:
X case BRD_ECPE:
X case BRD_ECPMC:
+ case BRD_ECPPCI:
X stli_initecp(brdp);
X break;
X case BRD_ONBOARD:
@@ -4104,20 +4421,20 @@
X stli_brdnames[brdp->brdtype]);
X return(ENODEV);
X default:
- printk("STALLION: unit=%d is unknown board type=%d\n",
+ printk("STALLION: board=%d is unknown board type=%d\n",
X brdp->brdnr, brdp->brdtype);
X return(ENODEV);
X }
X
X if ((brdp->state & BST_FOUND) == 0) {
- printk("STALLION: %s board not found, unit=%d io=%x mem=%x\n",
+ printk("STALLION: %s board not found, board=%d io=%x mem=%x\n",
X stli_brdnames[brdp->brdtype], brdp->brdnr,
X brdp->iobase, (int) brdp->memaddr);
X return(ENODEV);
X }
X
X stli_initports(brdp);
- printk("STALLION: %s found, unit=%d io=%x mem=%x "
+ printk("STALLION: %s found, board=%d io=%x mem=%x "
X "nrpanels=%d nrports=%d\n", stli_brdnames[brdp->brdtype],
X brdp->brdnr, brdp->iobase, (int) brdp->memaddr,
X brdp->nrpanels, brdp->nrports);
@@ -4279,29 +4596,13 @@
X continue;
X
X /*
- * Check that we have room for this new board in our board
- * info table.
- */
- if (stli_nrbrds >= STL_MAXBRDS) {
- printk("STALLION: no room for more probed boards, "
- "maximum supported %d\n", STL_MAXBRDS);
- break;
- }
-
-/*
X * We have found a Stallion board and it is not configured already.
X * Allocate a board structure and initialize it.
X */
- brdp = (stlibrd_t *) stli_memalloc(sizeof(stlibrd_t));
- if (brdp == (stlibrd_t *) NULL) {
- printk("STALLION: failed to allocate memory "
- "(size=%d)\n", sizeof(stlibrd_t));
+ if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
+ return(-ENOMEM);
+ if ((brdp->brdnr = stli_getbrdnr()) < 0)
X return(-ENOMEM);
- }
- memset(brdp, 0, sizeof(stlibrd_t));
-
- brdp->magic = STLI_BOARDMAGIC;
- brdp->brdnr = stli_nrbrds++;
X eid = inb(iobase + 0xc82);
X if (eid == ECP_EISAID)
X brdp->brdtype = BRD_ECPE;
@@ -4322,6 +4623,123 @@
X /*****************************************************************************/
X
X /*
+ * Find the next available board number that is free.
+ */
+
+static inline int stli_getbrdnr()
+{
+ int i;
+
+ for (i = 0; (i < STL_MAXBRDS); i++) {
+ if (stli_brds[i] == (stlibrd_t *) NULL) {
+ if (i >= stli_nrbrds)
+ stli_nrbrds = i + 1;
+ return(i);
+ }
+ }
+ return(-1);
+}
+
+/*****************************************************************************/
+
+#ifdef CONFIG_PCI
+
+/*
+ * We have a Stallion board. Allocate a board structure and
+ * initialize it. Read its IO and MEMORY resources from PCI
+ * configuration space.
+ */
+
+static inline int stli_initpcibrd(int brdtype, struct pci_dev *devp)
+{
+ stlibrd_t *brdp;
+
+#if DEBUG
+ printk("stli_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n", brdtype,
+ dev->bus->number, dev->devfn);
+#endif
+
+ if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
+ return(-ENOMEM);
+ if ((brdp->brdnr = stli_getbrdnr()) < 0) {
+ printk("STALLION: too many boards found, "
+ "maximum supported %d\n", STL_MAXBRDS);
+ return(0);
+ }
+ brdp->brdtype = brdtype;
+
+#if DEBUG
+ printk("%s(%d): BAR[]=%x,%x,%x,%x\n", __FILE__, __LINE__,
+ devp->base_address[0], devp->base_address[1],
+ devp->base_address[2], devp->base_address[3]);
+#endif
+
+/*
+ * We have all resources from the board, so lets setup the actual
+ * board structure now.
+ */
+ brdp->iobase = (devp->base_address[3] & PCI_BASE_ADDRESS_IO_MASK);
+ brdp->memaddr = (devp->base_address[2] & PCI_BASE_ADDRESS_MEM_MASK);
+ stli_brdinit(brdp);
+
+ return(0);
+}
+
+/*****************************************************************************/
+
+/*
+ * Find all Stallion PCI boards that might be installed. Initialize each
+ * one as it is found.
+ */
+
+static inline int stli_findpcibrds()
+{
+ struct pci_dev *dev = NULL;
+ int rc;
+
+#if DEBUG
+ printk("stli_findpcibrds()\n");
+#endif
+
+ if (! pci_present())
+ return(0);
+
+ while ((dev = pci_find_device(PCI_VENDOR_ID_STALLION,
+ PCI_DEVICE_ID_ECRA, dev))) {
+ if ((rc = stli_initpcibrd(BRD_ECPPCI, dev)))
+ return(rc);
+ }
+
+ return(0);
+}
+
+#endif
+
+/*****************************************************************************/
+
+/*
+ * Allocate a new board structure. Fill out the basic info in it.
+ */
+
+static stlibrd_t *stli_allocbrd()
+{
+ stlibrd_t *brdp;
+
+ brdp = (stlibrd_t *) stli_memalloc(sizeof(stlibrd_t));
+ if (brdp == (stlibrd_t *) NULL) {
+ printk("STALLION: failed to allocate memory (size=%d)\n",
+ sizeof(stlibrd_t));
+ return((stlibrd_t *) NULL);
+ }
+
+ memset(brdp, 0, sizeof(stlibrd_t));
+ brdp->magic = STLI_BOARDMAGIC;
+ return(brdp);
+}
+
+/*****************************************************************************/
+
+/*
X * Scan through all the boards in the configuration and see what we
X * can find.
X */
@@ -4344,19 +4762,16 @@
X
X /*
X * Firstly scan the list of static boards configured. Allocate
- * resources and initialize the boards as found.
+ * resources and initialize the boards as found. If this is a
+ * module then let the module args override static configuration.
X */
X for (i = 0; (i < stli_nrbrds); i++) {
X confp = &stli_brdconf[i];
- brdp = (stlibrd_t *) stli_memalloc(sizeof(stlibrd_t));
- if (brdp == (stlibrd_t *) NULL) {
- printk("STALLION: failed to allocate memory "
- "(size=%d)\n", sizeof(stlibrd_t));
+#ifdef MODULE
+ stli_parsebrd(confp, stli_brdsp[i]);
+#endif
+ if ((brdp = stli_allocbrd()) == (stlibrd_t *) NULL)
X return(-ENOMEM);
- }
- memset(brdp, 0, sizeof(stlibrd_t));
-
- brdp->magic = STLI_BOARDMAGIC;
X brdp->brdnr = i;
X brdp->brdtype = confp->brdtype;
X brdp->iobase = confp->ioaddr1;
@@ -4365,10 +4780,17 @@
X }
X
X /*
- * Now go probing for EISA boards if enabled.
+ * Static configuration table done, so now use dynamic methods to
+ * see if any more boards should be configured.
X */
+#ifdef MODULE
+ stli_argbrds();
+#endif
X if (stli_eisaprobe)
X stli_findeisabrds();
+#ifdef CONFIG_PCI
+ stli_findpcibrds();
+#endif
X
X /*
X * All found boards are initialized. Now for a little optimization, if
diff -u --recursive --new-file v2.2.4/linux/drivers/char/misc.c linux/drivers/char/misc.c
--- v2.2.4/linux/drivers/char/misc.c Wed Mar 10 15:29:46 1999
+++ linux/drivers/char/misc.c Fri Mar 26 13:57:41 1999
@@ -73,6 +73,7 @@
X extern void watchdog_init(void);
X extern void wdt_init(void);
X extern void acq_init(void);
+extern void dtlk_init(void);
X extern void pcwatchdog_init(void);
X extern int rtc_init(void);
X extern int rtc_DP8570A_init(void);
diff -u --recursive --new-file v2.2.4/linux/drivers/char/n_hdlc.c linux/drivers/char/n_hdlc.c
--- v2.2.4/linux/drivers/char/n_hdlc.c Wed Dec 31 16:00:00 1969
+++ linux/drivers/char/n_hdlc.c Fri Mar 12 08:20:38 1999
@@ -0,0 +1,1151 @@
+/* generic HDLC line discipline for Linux
+ *
+ * Written by Paul Fulghum pau...@microgate.com
+ * for Microgate Corporation
+ *
+ * Microgate and SyncLink are registered trademarks of Microgate Corporation
+ *
+ * Adapted from ppp.c, written by Michael Callahan <call...@maths.ox.ac.uk>,
+ * Al Longyear <long...@netcom.com>, Paul Mackerras <Paul.Ma...@cs.anu.edu.au>
+ *
+ * Original release 01/11/99
+ *
+ * This code is released under the GNU General Public License (GPL)
+ *
+ * This module implements the tty line discipline N_HDLC for use with
+ * tty device drivers that support bit-synchronous HDLC communications.
+ *
+ * All HDLC data is frame oriented which means:
+ *
+ * 1. tty write calls represent one complete transmit frame of data
+ * The device driver should accept the complete frame or none of
+ * the frame (busy) in the write method. Each write call should have
+ * a byte count in the range of 2-4096 bytes (2 is min HDLC frame
+ * with 1 addr byte and 1 ctrl byte).
+ *
+ * 2. receive callbacks from the device driver represents
+ * one received frame. The device driver should bypass
+ * the tty flip buffer and call the line discipline receive
+ * callback directly to avoid fragmenting or concatenating
+ * multiple frames into a single receive callback.
+ *
+ * The HDLC line discipline queues the receive frames in seperate
+ * buffers so complete receive frames can be returned by the
+ * tty read calls.
+ *
+ * 3. tty read calls returns an entire frame of data or nothing.
+ *
+ * 4. all send and receive data is considered raw. No processing
+ * or translation is performed by the line discipline, regardless
+ * of the tty flags
+ *
+ * 5. When line discipline is queried for the amount of receive
+ * data available (FIOC), 0 is returned if no data available,
+ * otherwise the count of the next available frame is returned.
+ * (instead of the sum of all received frame counts).
+ *
+ * These conventions allow the standard tty programming interface
+ * to be used for synchronous HDLC applications when used with
+ * this line discipline (or another line discipline that is frame
+ * oriented such as N_PPP).
+ *
+ * The SyncLink driver (synclink.c) implements both asynchronous
+ * (using standard line discipline N_TTY) and synchronous HDLC
+ * (using N_HDLC) communications, with the latter using the above
+ * conventions.
+ *
+ * This implementation is very basic and does not maintain
+ * any statistics. The main point is to enforce the raw data
+ * and frame orientation of HDLC communications.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#define HDLC_MAGIC 0x239e
+#define HDLC_VERSION "1.0"
+
+#include <linux/version.h>
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/sched.h>
+#include <linux/types.h>
+#include <linux/fcntl.h>
+#include <linux/interrupt.h>
+#include <linux/ptrace.h>
+
+#undef VERSION
+#define VERSION(major,minor,patch) (((((major)<<8)+(minor))<<8)+(patch))
+
+#if LINUX_VERSION_CODE < VERSION(2,1,14)
+#include <linux/ioport.h>
+#endif
+
+#if LINUX_VERSION_CODE >= VERSION(2,1,23)
+#include <linux/poll.h>
+#endif
+
+#include <linux/in.h>
+#include <linux/malloc.h>
+#include <linux/tty.h>
+#include <linux/errno.h>
+#include <linux/sched.h> /* to get the struct task_struct */
+#include <linux/string.h> /* used in new tty drivers */
+#include <linux/signal.h> /* used in new tty drivers */
+#include <asm/system.h>
+#include <asm/bitops.h>
+#include <asm/termios.h>
+#include <linux/if.h>
+
+#include <linux/ioctl.h>
+
+#ifdef CONFIG_KERNELD
+#include <linux/kerneld.h>
SHAR_EOF
true || echo 'restore of patch-2.2.5 failed'
fi
echo 'End of part 1'
echo 'File patch-2.2.5 is continued in part 2'
echo 2 > _shar_seq_.tmp
exit 0

Thomas...@ciw.uni-karlsruhe.de

unread,
Apr 5, 1999, 3:00:00 AM4/5/99
to
Archive-name: v2.2/patch-2.2.5/part2

#!/bin/sh
# this is part 2 of a 8 - part archive


# do not concatenate these parts, unpack them in order with /bin/sh

# file patch-2.2.5 continued
if test ! -r _shar_seq_.tmp; then
echo 'Please unpack part 1 first!'
exit 1
fi
(read Scheck
if test "$Scheck" != 2; then
echo Please unpack part "$Scheck" next!
exit 1
else
exit 0
fi
) < _shar_seq_.tmp || exit 1
if test ! -f _shar_wnt_.tmp; then
echo 'x - still skipping patch-2.2.5'
else
echo 'x - continuing with patch-2.2.5'


sed 's/^X//' << 'SHAR_EOF' >> 'patch-2.2.5' &&

+#endif
+
+#if LINUX_VERSION_CODE >= VERSION(2,1,4)
+#include <asm/segment.h>
+#define GET_USER(error,value,addr) error = get_user(value,addr)
+#define COPY_FROM_USER(error,dest,src,size) error = copy_from_user(dest,src,size) ? -EFAULT : 0
+#define PUT_USER(error,value,addr) error = put_user(value,addr)
+#define COPY_TO_USER(error,dest,src,size) error = copy_to_user(dest,src,size) ? -EFAULT : 0
+
+#if LINUX_VERSION_CODE >= VERSION(2,1,5)
+#include <asm/uaccess.h>
+#endif
+
+#else /* 2.0.x and 2.1.x before 2.1.4 */
+
+#define GET_USER(error,value,addr) \
+do { \
+ error = verify_area (VERIFY_READ, (void *) addr, sizeof (value)); \
+ if (error == 0) \
+ value = get_user(addr); \
+} while (0)
+
+#define COPY_FROM_USER(error,dest,src,size) \
+do { \
+ error = verify_area (VERIFY_READ, (void *) src, size); \
+ if (error == 0) \
+ memcpy_fromfs (dest, src, size); \
+} while (0)
+
+#define PUT_USER(error,value,addr) \
+do { \
+ error = verify_area (VERIFY_WRITE, (void *) addr, sizeof (value)); \
+ if (error == 0) \
+ put_user (value, addr); \
+} while (0)
+
+#define COPY_TO_USER(error,dest,src,size) \
+do { \
+ error = verify_area (VERIFY_WRITE, (void *) dest, size); \
+ if (error == 0) \
+ memcpy_tofs (dest, src, size); \
+} while (0)
+
+#endif
+
+#if LINUX_VERSION_CODE < VERSION(2,1,0)
+#define __init
+typedef int spinlock_t;
+#define spin_lock_irqsave(a,b) {save_flags((b));cli();}
+#define spin_unlock_irqrestore(a,b) {restore_flags((b));}
+#define spin_lock(a)
+#define spin_unlock(a)
+#define schedule_timeout(a){current->timeout = jiffies + (a); schedule();}
+#endif
+
+#if LINUX_VERSION_CODE < VERSION(2,1,37)
+#define test_and_set_bit(nr, addr) set_bit(nr, addr)
+#endif
+
+#if LINUX_VERSION_CODE < VERSION(2,1,57)
+#define signal_pending(p) ((p)->signal & ~(p)->blocked)
+#endif
+
+#if LINUX_VERSION_CODE < VERSION(2,1,25)
+#define net_device_stats enet_statistics
+#endif
+
+#if LINUX_VERSION_CODE < VERSION(2,1,60)
+typedef int rw_ret_t;
+typedef unsigned int rw_count_t;
+#else
+typedef ssize_t rw_ret_t;
+typedef size_t rw_count_t;
+#endif
+
+/*
+ * Buffers for individual HDLC frames
+ */
+#define MAX_HDLC_FRAME_SIZE 4096
+#define DEFAULT_RX_BUF_COUNT 10
+#define MAX_RX_BUF_COUNT 30
+#define DEFAULT_TX_BUF_COUNT 1
+
+typedef struct _n_hdlc_buf
+{
+ struct _n_hdlc_buf *link;
+ int count;
+ char buf[MAX_HDLC_FRAME_SIZE];
+} N_HDLC_BUF;
+
+typedef struct _n_hdlc_buf_list
+{
+ N_HDLC_BUF *head;
+ N_HDLC_BUF *tail;
+ int count;
+ spinlock_t spinlock;
+
+} N_HDLC_BUF_LIST;
+
+/*
+ * Per device instance data structure
+ */
+struct n_hdlc {
+ int magic; /* magic value for structure */
+ __u32 flags; /* miscellaneous control flags */
+
+ struct tty_struct *tty; /* ptr to TTY structure */
+ struct tty_struct *backup_tty; /* TTY to use if tty gets closed */
+
+ /* Queues for select() functionality */
+ struct wait_queue *read_wait;
+ struct wait_queue *write_wait;
+
+ int tbusy; /* reentrancy flag for tx wakeup code */
+ int woke_up;
+ N_HDLC_BUF *tbuf; /* currently transmitting tx buffer */
+ N_HDLC_BUF_LIST tx_buf_list; /* list of pending transmit frame buffers */
+ N_HDLC_BUF_LIST rx_buf_list; /* list of received frame buffers */
+ N_HDLC_BUF_LIST tx_free_buf_list; /* list unused transmit frame buffers */
+ N_HDLC_BUF_LIST rx_free_buf_list; /* list unused received frame buffers */
+};
+
+/*
+ * HDLC buffer list manipulation functions
+ */
+void n_hdlc_buf_list_init(N_HDLC_BUF_LIST *list);
+void n_hdlc_buf_put(N_HDLC_BUF_LIST *list,N_HDLC_BUF *buf);
+N_HDLC_BUF* n_hdlc_buf_get(N_HDLC_BUF_LIST *list);
+
+/* Local functions */
+
+static struct n_hdlc *n_hdlc_alloc (void);
+
+#if LINUX_VERSION_CODE >= VERSION(2,1,19)
+MODULE_PARM(debuglevel, "i");
+#endif
+
+/* debug level can be set by insmod for debugging purposes */
+#define DEBUG_LEVEL_INFO 1
+int debuglevel=0;
+
+/* TTY callbacks */
+
+static rw_ret_t n_hdlc_tty_read(struct tty_struct *,
+ struct file *, __u8 *, rw_count_t);
+static rw_ret_t n_hdlc_tty_write(struct tty_struct *,
+ struct file *, const __u8 *, rw_count_t);
+static int n_hdlc_tty_ioctl(struct tty_struct *,
+ struct file *, unsigned int, unsigned long);
+#if LINUX_VERSION_CODE < VERSION(2,1,23)
+static int n_hdlc_tty_select (struct tty_struct *tty, struct inode *inode,
+ struct file *filp, int sel_type, select_table * wait);
+#else
+static unsigned int n_hdlc_tty_poll (struct tty_struct *tty, struct file *filp,
+ poll_table * wait);
+#endif
+static int n_hdlc_tty_open (struct tty_struct *);
+static void n_hdlc_tty_close (struct tty_struct *);
+static int n_hdlc_tty_room (struct tty_struct *tty);
+static void n_hdlc_tty_receive (struct tty_struct *tty,
+ const __u8 * cp, char *fp, int count);
+static void n_hdlc_tty_wakeup (struct tty_struct *tty);
+
+#define bset(p,b) ((p)[(b) >> 5] |= (1 << ((b) & 0x1f)))
+
+#define tty2n_hdlc(tty) ((struct n_hdlc *) ((tty)->disc_data))
+#define n_hdlc2tty(n_hdlc) ((n_hdlc)->tty)
+
+/* Define this string only once for all macro invocations */
+static char szVersion[] = HDLC_VERSION;
+
+/* n_hdlc_release()
+ *
+ * release an n_hdlc per device line discipline info structure
+ *
+ */
+static void n_hdlc_release (struct n_hdlc *n_hdlc)
+{
+ struct tty_struct *tty = n_hdlc2tty (n_hdlc);
+ N_HDLC_BUF *buf;
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_release() called\n",__FILE__,__LINE__);
+
+ /* Ensure that the n_hdlcd process is not hanging on select()/poll() */
+ wake_up_interruptible (&n_hdlc->read_wait);
+ wake_up_interruptible (&n_hdlc->write_wait);
+
+ if (tty != NULL && tty->disc_data == n_hdlc)
+ tty->disc_data = NULL; /* Break the tty->n_hdlc link */
+
+ /* Release transmit and receive buffers */
+ for(;;) {
+ buf = n_hdlc_buf_get(&n_hdlc->rx_free_buf_list);
+ if (buf) {
+ kfree(buf);
+ } else
+ break;
+ }
+ for(;;) {
+ buf = n_hdlc_buf_get(&n_hdlc->tx_free_buf_list);
+ if (buf) {
+ kfree(buf);
+ } else
+ break;
+ }
+ for(;;) {
+ buf = n_hdlc_buf_get(&n_hdlc->rx_buf_list);
+ if (buf) {
+ kfree(buf);
+ } else
+ break;
+ }
+ for(;;) {
+ buf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
+ if (buf) {
+ kfree(buf);
+ } else
+ break;
+ }
+
+ kfree(n_hdlc);
+
+} /* end of n_hdlc_release() */
+
+/* n_hdlc_tty_close()
+ *
+ * Called when the line discipline is changed to something
+ * else, the tty is closed, or the tty detects a hangup.
+ */
+static void n_hdlc_tty_close(struct tty_struct *tty)
+{
+ struct n_hdlc *n_hdlc = tty2n_hdlc (tty);
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_close() called\n",__FILE__,__LINE__);
+
+ if (n_hdlc != NULL) {
+ if (n_hdlc->magic != HDLC_MAGIC) {
+ printk (KERN_WARNING"n_hdlc: trying to close unopened tty!\n");
+ return;
+ }
+ tty->disc_data = NULL;
+ if (tty == n_hdlc->backup_tty)
+ n_hdlc->backup_tty = 0;
+ if (tty != n_hdlc->tty)
+ return;
+ if (n_hdlc->backup_tty) {
+ n_hdlc->tty = n_hdlc->backup_tty;
+ } else {
+ n_hdlc_release (n_hdlc);
+ MOD_DEC_USE_COUNT;
+ }
+ }
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_close() success\n",__FILE__,__LINE__);
+
+} /* end of n_hdlc_tty_close() */
+
+/* n_hdlc_tty_open
+ *
+ * called when line discipline changed to n_hdlc
+ *
+ * Arguments: tty pointer to tty info structure
+ * Return Value: 0 if success, otherwise error code
+ */
+static int n_hdlc_tty_open (struct tty_struct *tty)
+{
+ struct n_hdlc *n_hdlc = tty2n_hdlc (tty);
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_open() called\n",__FILE__,__LINE__);
+
+ /* There should not be an existing table for this slot. */
+ if (n_hdlc) {
+ printk (KERN_ERR"n_hdlc_tty_open:tty already associated!\n" );
+ return -EEXIST;
+ }
+
+ n_hdlc = n_hdlc_alloc();
+ if (!n_hdlc) {
+ printk (KERN_ERR "n_hdlc_alloc failed\n");
+ return -ENFILE;
+ }
+
+ tty->disc_data = n_hdlc;
+ n_hdlc->tty = tty;
+
+ MOD_INC_USE_COUNT;
+
+ /* Flush any pending characters in the driver and discipline. */
+
+ if (tty->ldisc.flush_buffer)
+ tty->ldisc.flush_buffer (tty);
+
+ if (tty->driver.flush_buffer)
+ tty->driver.flush_buffer (tty);
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_open() success\n",__FILE__,__LINE__);
+
+ return 0;
+
+} /* end of n_tty_hdlc_open() */
+
+/* n_hdlc_send_frames()
+ *
+ * send frames on pending send buffer list until the
+ * driver does not accept a frame (busy)
+ * this function is called after adding a frame to the
+ * send buffer list and by the tty wakeup callback
+ *
+ * Arguments: n_hdlc pointer to ldisc instance data
+ * tty pointer to tty instance data
+ * Return Value: None
+ */
+static void n_hdlc_send_frames (struct n_hdlc *n_hdlc, struct tty_struct *tty)
+{
+ register int actual;
+ unsigned long flags;
+ N_HDLC_BUF *tbuf;
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_send_frames() called\n",__FILE__,__LINE__);
+
+ save_flags(flags);
+ cli ();
+ if (n_hdlc->tbusy) {
+ n_hdlc->woke_up = 1;
+ restore_flags(flags);
+ return;
+ }
+ n_hdlc->tbusy = 1;
+ restore_flags(flags);
+
+ /* get current transmit buffer or get new transmit */
+ /* buffer from list of pending transmit buffers */
+
+ tbuf = n_hdlc->tbuf;
+ if (!tbuf)
+ tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
+
+ while (tbuf) {
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)sending frame %p, count=%d\n",
+ __FILE__,__LINE__,tbuf,tbuf->count);
+
+ /* Send the next block of data to device */
+ n_hdlc->woke_up = 0;
+ tty->flags |= (1 << TTY_DO_WRITE_WAKEUP);
+ actual = tty->driver.write(tty, 0, tbuf->buf, tbuf->count);
+
+ /* if transmit error, throw frame away by */
+ /* pretending it was accepted by driver */
+ if (actual < 0)
+ actual = tbuf->count;
+
+ if (actual == tbuf->count) {
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)frame %p completed\n",
+ __FILE__,__LINE__,tbuf);
+
+ /* free current transmit buffer */
+ n_hdlc_buf_put(&n_hdlc->tx_free_buf_list,tbuf);
+
+ /* this tx buffer is done */
+ n_hdlc->tbuf = NULL;
+
+ /* wait up sleeping writers */
+ wake_up_interruptible(&n_hdlc->write_wait);
+
+ /* get next pending transmit buffer */
+ tbuf = n_hdlc_buf_get(&n_hdlc->tx_buf_list);
+ } else {
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)frame %p pending\n",
+ __FILE__,__LINE__,tbuf);
+
+ /* buffer not accepted by driver */
+
+ /* check if wake up code called since last write call */
+ if (n_hdlc->woke_up)
+ continue;
+
+ /* set this buffer as pending buffer */
+ n_hdlc->tbuf = tbuf;


+ break;
+ }
+ }
+

+ if (!tbuf)
+ tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+
+ /* Clear the re-entry flag */
+ save_flags(flags);
+ cli ();
+ n_hdlc->tbusy = 0;
+ restore_flags(flags);
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_send_frames() exit\n",__FILE__,__LINE__);
+
+} /* end of n_hdlc_send_frames() */
+
+/* n_hdlc_tty_wakeup()
+ *
+ * Callback for transmit wakeup. Called when low level
+ * device driver can accept more send data.
+ *
+ * Arguments: tty pointer to associated tty instance data
+ * Return Value: None
+ */
+static void n_hdlc_tty_wakeup (struct tty_struct *tty)
+{
+ struct n_hdlc *n_hdlc = tty2n_hdlc (tty);
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_wakeup() called\n",__FILE__,__LINE__);
+
+ if (!n_hdlc)
+ return;
+
+ if (tty != n_hdlc->tty) {
+ tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ return;
+ }
+
+ if (!n_hdlc->tbuf)
+ tty->flags &= ~(1 << TTY_DO_WRITE_WAKEUP);
+ else
+ n_hdlc_send_frames (n_hdlc, tty);
+
+} /* end of n_hdlc_tty_wakeup() */
+
+/* n_hdlc_tty_room()
+ *
+ * Callback function from tty driver. Return the amount of
+ * space left in the receiver's buffer to decide if remote
+ * transmitter is to be throttled.
+ *
+ * Arguments: tty pointer to associated tty instance data
+ * Return Value: number of bytes left in receive buffer
+ */
+static int n_hdlc_tty_room (struct tty_struct *tty)
+{
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_room() called\n",__FILE__,__LINE__);
+ /* always return a larger number to prevent */
+ /* throttling of remote transmitter. */
+ return 65536;
+} /* end of n_hdlc_tty_root() */
+
+/* n_hdlc_tty_receive()
+ *
+ * Called by tty low level driver when receive data is
+ * available. Data is interpreted as one HDLC frame.
+ *
+ * Arguments: tty pointer to tty isntance data
+ * data pointer to received data
+ * flags pointer to flags for data
+ * count count of received data in bytes
+ *
+ * Return Value: None
+ */
+static void n_hdlc_tty_receive(struct tty_struct *tty,
+ const __u8 * data, char *flags, int count)
+{
+ register struct n_hdlc *n_hdlc = tty2n_hdlc (tty);
+ register N_HDLC_BUF *buf;
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_receive() called count=%d\n",
+ __FILE__,__LINE__, count);
+
+ /* This can happen if stuff comes in on the backup tty */
+ if (n_hdlc == 0 || tty != n_hdlc->tty)
+ return;
+
+ /* verify line is using HDLC discipline */
+ if (n_hdlc->magic != HDLC_MAGIC) {
+ printk("%s(%d) line not using HDLC discipline\n",
+ __FILE__,__LINE__);
+ return;
+ }
+
+ /* get a free HDLC buffer */
+ buf = n_hdlc_buf_get(&n_hdlc->rx_free_buf_list);
+ if (!buf) {
+ /* no buffers in free list, attempt to allocate another rx buffer */
+ /* unless the maximum count has been reached */
+ if (n_hdlc->rx_buf_list.count < MAX_RX_BUF_COUNT)
+ buf = (N_HDLC_BUF*)kmalloc(sizeof(N_HDLC_BUF),GFP_ATOMIC);
+ }
+
+ if (!buf) {
+ printk("%s(%d) no more rx buffers, data discarded\n",
+ __FILE__,__LINE__);
+ return;
+ }
+
+ /* copy received data to HDLC buffer */
+ memcpy(buf->buf,data,count);
+ buf->count=count;
+
+ /* add HDLC buffer to list of received frames */
+ n_hdlc_buf_put(&n_hdlc->rx_buf_list,buf);
+
+ /* wake up any blocked reads and perform async signalling */
+ wake_up_interruptible (&n_hdlc->read_wait);
+ if (n_hdlc->tty->fasync != NULL)
+ kill_fasync (n_hdlc->tty->fasync, SIGIO);
+
+} /* end of n_hdlc_tty_receive() */
+
+/* n_hdlc_tty_read()
+ *
+ * Called to retreive one frame of data (if available)
+ *
+ * Arguments:
+ *
+ * tty pointer to tty instance data
+ * file pointer to open file object
+ * buf pointer to returned data buffer
+ * nr size of returned data buffer
+ *
+ * Return Value:
+ *
+ * Number of bytes returned or error code
+ */
+static rw_ret_t n_hdlc_tty_read (struct tty_struct *tty,
+ struct file *file, __u8 * buf, rw_count_t nr)
+{
+ struct n_hdlc *n_hdlc = tty2n_hdlc(tty);
+ int error;
+ rw_ret_t ret;
+ N_HDLC_BUF *rbuf;
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_read() called\n",__FILE__,__LINE__);
+
+ /* Validate the pointers */
+ if (!n_hdlc)
+ return -EIO;
+
+ /* verify user access to buffer */
+ error = verify_area (VERIFY_WRITE, buf, nr);
+ if (error != 0) {
+ printk(KERN_WARNING"%s(%d) n_hdlc_tty_read() can't verify user "
+ "buffer\n",__FILE__,__LINE__);
+ return (error);
+ }
+
+ for (;;) {
+ n_hdlc = tty2n_hdlc (tty);
+ if (!n_hdlc || n_hdlc->magic != HDLC_MAGIC ||
+ tty != n_hdlc->tty)
+ return 0;
+
+ rbuf = n_hdlc_buf_get(&n_hdlc->rx_buf_list);
+ if (rbuf)
+ break;
+
+ /* no data */
+ if (file->f_flags & O_NONBLOCK)
+ return -EAGAIN;
+
+ /* TODO: no timeout? current->timeout = 0;*/
+ interruptible_sleep_on (&n_hdlc->read_wait);
+ if (signal_pending(current))
+ return -EINTR;
+ }
+
+ if (rbuf->count > nr) {
+ /* frame too large for caller's buffer (discard frame) */
+ ret = (rw_ret_t)-EOVERFLOW;
+ } else {
+ /* Copy the data to the caller's buffer */
+ COPY_TO_USER(error,buf,rbuf->buf,rbuf->count);
+ if (error)
+ ret = (rw_ret_t)error;
+ else
+ ret = (rw_ret_t)rbuf->count;
+ }
+
+ /* return HDLC buffer to free list unless the free list */
+ /* count has exceeded the default value, in which case the */
+ /* buffer is freed back to the OS to conserve memory */
+ if (n_hdlc->rx_free_buf_list.count > DEFAULT_RX_BUF_COUNT)
+ kfree(rbuf);
+ else
+ n_hdlc_buf_put(&n_hdlc->rx_free_buf_list,rbuf);
+
+ return ret;
+
+} /* end of n_hdlc_tty_read() */
+
+/* n_hdlc_tty_write()
+ *
+ * write a single frame of data to device
+ *
+ * Arguments: tty pointer to associated tty device instance data
+ * file pointer to file object data
+ * data pointer to transmit data (one frame)
+ * count size of transmit frame in bytes
+ *
+ * Return Value: number of bytes written (or error code)
+ */
+static rw_ret_t n_hdlc_tty_write (struct tty_struct *tty, struct file *file,
+ const __u8 * data, rw_count_t count)
+{
+ struct n_hdlc *n_hdlc = tty2n_hdlc (tty);
+ int error = 0;
+ struct wait_queue wait = {current, NULL};
+ N_HDLC_BUF *tbuf;
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_write() called count=%d\n",
+ __FILE__,__LINE__,count);
+
+ /* Verify pointers */
+ if (!n_hdlc)
+ return -EIO;
+
+ if (n_hdlc->magic != HDLC_MAGIC)
+ return -EIO;
+
+ /* verify frame size */
+ if (count > MAX_HDLC_FRAME_SIZE) {
+ if (debuglevel & DEBUG_LEVEL_INFO)
+ printk (KERN_WARNING
+ "n_hdlc_tty_write: truncating user packet "
+ "from %lu to %d\n", (unsigned long) count,
+ MAX_HDLC_FRAME_SIZE);
+ count = MAX_HDLC_FRAME_SIZE;
+ }
+
+ /* Allocate transmit buffer */
+ tbuf = n_hdlc_buf_get(&n_hdlc->tx_free_buf_list);
+ if (!tbuf) {
+ /* sleep until transmit buffer available */
+ add_wait_queue(&n_hdlc->write_wait, &wait);
+ while (!tbuf) {
+ /* TODO: no timeout? current->timeout = 0;*/
+ current->state = TASK_INTERRUPTIBLE;
+ schedule();
+
+ n_hdlc = tty2n_hdlc (tty);
+ if (!n_hdlc || n_hdlc->magic != HDLC_MAGIC ||
+ tty != n_hdlc->tty) {
+ printk("n_hdlc_tty_write: %p invalid after wait!\n", n_hdlc);
+ error = -EIO;
+ break;
+ }
+
+ if (signal_pending(current)) {
+ error = -EINTR;
+ break;
+ }
+
+ tbuf = n_hdlc_buf_get(&n_hdlc->tx_free_buf_list);
+ }
+ current->state = TASK_RUNNING;
+ remove_wait_queue(&n_hdlc->write_wait, &wait);
+ }
+
+ if (!error) {
+ /* Retrieve the user's buffer */
+ COPY_FROM_USER (error, tbuf->buf, data, count);
+ if (error) {
+ /* return tx buffer to free list */
+ n_hdlc_buf_put(&n_hdlc->tx_free_buf_list,tbuf);
+ } else {
+ /* Send the data */
+ tbuf->count = error = count;
+ n_hdlc_buf_put(&n_hdlc->tx_buf_list,tbuf);
+ n_hdlc_send_frames(n_hdlc,tty);
+ }
+ }
+
+ return error;
+
+} /* end of n_hdlc_tty_write() */
+
+/* n_hdlc_tty_ioctl()
+ *
+ * Process IOCTL system call for the tty device.
+ *
+ * Arguments:
+ *
+ * tty pointer to tty instance data
+ * file pointer to open file object for device
+ * cmd IOCTL command code
+ * arg argument for IOCTL call (cmd dependent)
+ *
+ * Return Value: Command dependent
+ */
+static int n_hdlc_tty_ioctl (struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct n_hdlc *n_hdlc = tty2n_hdlc (tty);
+ int error = 0;
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_ioctl() called %d\n",
+ __FILE__,__LINE__,cmd);
+
+ /* Verify the status of the device */
+ if (!n_hdlc || n_hdlc->magic != HDLC_MAGIC)
+ return -EBADF;
+
+ switch (cmd) {
+ case FIONREAD:
+ {
+ /* report count of read data available */
+ /* in next available frame (if any) */
+ int count;
+ unsigned long flags;
+ spin_lock_irqsave(&n_hdlc->rx_buf_list.spinlock,flags);
+ if (n_hdlc->rx_buf_list.head)
+ count = n_hdlc->rx_buf_list.head->count;
+ else
+ count = 0;
+ spin_unlock_irqrestore(&n_hdlc->rx_buf_list.spinlock,flags);
+ PUT_USER (error, count, (int *) arg);
+ }
+ break;
+
+ default:
+ error = n_tty_ioctl (tty, file, cmd, arg);
+ break;
+ }
+ return error;
+
+} /* end of n_hdlc_tty_ioctl() */
+
+#if LINUX_VERSION_CODE < VERSION(2,1,23)
+/* n_hdlc_tty_select()
+ *
+ * Device select method. Determine if operation requires
+ * blocking and if so put appropriate wait queue in select
+ * table and return 0, otherwise return 1.
+ *
+ * Arguments:
+ *
+ * tty pointer to tty device instance data
+ * inode pointer to inode for device
+ * filp pointer to file object
+ * sel_type identified the select type (read/write/exception)
+ * wait select table for adding wait queue if appropriate
+ *
+ * Return Value:
+ *
+ * 1 if no need to block on operation
+ * 0 if must block and wait queue added to select table
+ */
+static int n_hdlc_tty_select (struct tty_struct *tty, struct inode *inode,
+ struct file *filp, int sel_type, select_table * wait)
+{
+ struct n_hdlc *n_hdlc = tty2n_hdlc(tty);
+ int result = 1;
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_select() called\n",__FILE__,__LINE__);
+
+ /* Verify the status of the device */
+ if (!n_hdlc)
+ return -EBADF;
+
+ if (n_hdlc->magic != HDLC_MAGIC || tty != n_hdlc->tty)
+ return -EBADF;
+
+ switch (sel_type) {
+ case SEL_IN:
+ if (n_hdlc->rx_buf_list.head)
+ break;
+
+ case SEL_EX: /* Exceptions or read errors */
+ /* Is this a pty link and the remote disconnected? */
+ if (tty->flags & (1 << TTY_OTHER_CLOSED))
+ break;
+
+ /* Is this a local link and the modem disconnected? */
+ if (tty_hung_up_p (filp))
+ break;
+
+ select_wait (&n_hdlc->read_wait, wait);
+ result = 0;
+ break;
+
+ /* Write mode. A write is allowed if there is no current transmission */
+ case SEL_OUT:
+ if (!n_hdlc->tx_free_buf_list.head) {
+ select_wait (&n_hdlc->write_wait, wait);
+ result = 0;
+ }
+ break;
+ }
+ return result;
+} /* end of n_hdlc_tty_select() */
+
+#else /* 2.1.23 or later */
+
+/* n_hdlc_tty_poll()
+ *
+ * TTY callback for poll system call. Determine which
+ * operations (read/write) will not block and return
+ * info to caller.
+ *
+ * Arguments:
+ *
+ * tty pointer to tty instance data
+ * filp pointer to open file object for device
+ * poll_table wait queue for operations
+ *
+ * Return Value:
+ *
+ * bit mask containing info on which ops will not block
+ */
+static unsigned int n_hdlc_tty_poll (struct tty_struct *tty,
+ struct file *filp, poll_table * wait)
+{
+ struct n_hdlc *n_hdlc = tty2n_hdlc (tty);
+ unsigned int mask = 0;
+
+ if (debuglevel >= DEBUG_LEVEL_INFO)
+ printk("%s(%d)n_hdlc_tty_poll() called\n",__FILE__,__LINE__);
+
+ if (n_hdlc && n_hdlc->magic == HDLC_MAGIC && tty == n_hdlc->tty) {
+ /* queue current process into any wait queue that */
+ /* may awaken in the future (read and write) */
+#if LINUX_VERSION_CODE < VERSION(2,1,89)
+ poll_wait(&n_hdlc->read_wait, wait);
+ poll_wait(&n_hdlc->write_wait, wait);
+#else
+ poll_wait(filp, &n_hdlc->read_wait, wait);
+ poll_wait(filp, &n_hdlc->write_wait, wait);
+#endif
+ /* set bits for operations that wont block */
+ if(n_hdlc->rx_buf_list.head)
+ mask |= POLLIN | POLLRDNORM; /* readable */
+ if(tty->flags & (1 << TTY_OTHER_CLOSED))
+ mask |= POLLHUP;
+ if(tty_hung_up_p(filp))
+ mask |= POLLHUP;
+ if(n_hdlc->tx_free_buf_list.head)
+ mask |= POLLOUT | POLLWRNORM; /* writable */
+ }
+ return mask;
+} /* end of n_hdlc_tty_poll() */
+
+#endif
+
+/* n_hdlc_alloc()
+ *
+ * Allocate an n_hdlc instance data structure
+ *
+ * Arguments: None
+ * Return Value: pointer to structure if success, otherwise 0
+ */
+static struct n_hdlc *n_hdlc_alloc (void)
+{
+ struct n_hdlc *n_hdlc;
+ N_HDLC_BUF *buf;
+ int i;
+
+ n_hdlc = (struct n_hdlc *)kmalloc(sizeof(struct n_hdlc), GFP_KERNEL);
+ if (!n_hdlc)
+ return 0;
+
+ memset(n_hdlc, 0, sizeof(*n_hdlc));
+
+ n_hdlc_buf_list_init(&n_hdlc->rx_free_buf_list);
+ n_hdlc_buf_list_init(&n_hdlc->tx_free_buf_list);
+ n_hdlc_buf_list_init(&n_hdlc->rx_buf_list);
+ n_hdlc_buf_list_init(&n_hdlc->tx_buf_list);
+
+ /* allocate free rx buffer list */
+ for(i=0;i<DEFAULT_RX_BUF_COUNT;i++) {
+ buf = (N_HDLC_BUF*)kmalloc(sizeof(N_HDLC_BUF),GFP_KERNEL);
+ if (buf)
+ n_hdlc_buf_put(&n_hdlc->rx_free_buf_list,buf);
+ }
+
+ /* allocate free rx buffer list */
+ for(i=0;i<DEFAULT_TX_BUF_COUNT;i++) {
+ buf = (N_HDLC_BUF*)kmalloc(sizeof(N_HDLC_BUF),GFP_KERNEL);
+ if (buf)
+ n_hdlc_buf_put(&n_hdlc->tx_free_buf_list,buf);
+ }
+
+ /* Initialize the control block */
+ n_hdlc->magic = HDLC_MAGIC;
+
+ n_hdlc->flags = 0;
+ n_hdlc->read_wait = NULL;
+ n_hdlc->write_wait = NULL;
+
+ return n_hdlc;
+
+} /* end of n_hdlc_alloc() */
+
+/* n_hdlc_buf_list_init()
+ *
+ * initialize specified HDLC buffer list
+ *
+ * Arguments: list pointer to buffer list
+ * Return Value: None
+ */
+void n_hdlc_buf_list_init(N_HDLC_BUF_LIST *list)
+{
+ memset(list,0,sizeof(N_HDLC_BUF_LIST));
+
+} /* end of n_hdlc_buf_list_init() */
+
+/* n_hdlc_buf_put()
+ *
+ * add specified HDLC buffer to tail of specified list
+ *
+ * Arguments:
+ *
+ * list pointer to buffer list
+ * buf pointer to buffer
+ *
+ * Return Value: None
+ */
+void n_hdlc_buf_put(N_HDLC_BUF_LIST *list,N_HDLC_BUF *buf)
+{
+ unsigned long flags;
+ spin_lock_irqsave(&list->spinlock,flags);
+
+ buf->link=NULL;
+ if(list->tail)
+ list->tail->link = buf;
+ else
+ list->head = buf;
+ list->tail = buf;
+ (list->count)++;
+
+ spin_unlock_irqrestore(&list->spinlock,flags);
+
+} /* end of n_hdlc_buf_put() */
+
+/* n_hdlc_buf_get()
+ *
+ * remove and return an HDLC buffer from the
+ * head of the specified HDLC buffer list
+ *
+ * Arguments:
+ *
+ * list pointer to HDLC buffer list
+ *
+ * Return Value:
+ *
+ * pointer to HDLC buffer if available, otherwise NULL
+ */
+N_HDLC_BUF* n_hdlc_buf_get(N_HDLC_BUF_LIST *list)
+{
+ unsigned long flags;
+ N_HDLC_BUF *buf;
+ spin_lock_irqsave(&list->spinlock,flags);
+
+ buf = list->head;
+ if (buf) {
+ list->head = buf->link;
+ (list->count)--;
+ }
+ if (!list->head)
+ list->tail = NULL;
+
+ spin_unlock_irqrestore(&list->spinlock,flags);
+ return buf;
+
+} /* end of n_hdlc_buf_get() */
+
+/* init_module()
+ *
+ * called when module is loading to register line discipline
+ *
+ * Arguments: None
+ * Return Value: 0 if success, otherwise error code
+ */
+int init_module(void)
+{
+ static struct tty_ldisc n_hdlc_ldisc;
+ int status;
+
+ printk("HDLC line discipline: version %s\n", szVersion);
+
+ /* Register the tty discipline */
+
+ memset(&n_hdlc_ldisc, 0, sizeof (n_hdlc_ldisc));
+ n_hdlc_ldisc.magic = TTY_LDISC_MAGIC;
+#if LINUX_VERSION_CODE >= VERSION(2,1,28)
+ n_hdlc_ldisc.name = "hdlc";
+#endif
+ n_hdlc_ldisc.open = n_hdlc_tty_open;
+ n_hdlc_ldisc.close = n_hdlc_tty_close;
+ n_hdlc_ldisc.read = n_hdlc_tty_read;
+ n_hdlc_ldisc.write = n_hdlc_tty_write;
+ n_hdlc_ldisc.ioctl = n_hdlc_tty_ioctl;
+#if LINUX_VERSION_CODE < VERSION(2,1,23)
+ n_hdlc_ldisc.select = n_hdlc_tty_select;
+#else
+ n_hdlc_ldisc.poll = n_hdlc_tty_poll;
+#endif
+ n_hdlc_ldisc.receive_room = n_hdlc_tty_room;
+ n_hdlc_ldisc.receive_buf = n_hdlc_tty_receive;
+ n_hdlc_ldisc.write_wakeup = n_hdlc_tty_wakeup;
+
+ status = tty_register_ldisc(N_HDLC, &n_hdlc_ldisc);
+ if (!status)
+ printk (KERN_INFO"N_HDLC line discipline registered.\n");
+ else
+ printk (KERN_ERR"error registering line discipline: %d\n",status);
+
+ if (status)
+ printk(KERN_INFO"N_HDLC: init failure %d\n", status);
+ return (status);
+
+} /* end of init_module() */
+
+/* cleanup_module()
+ *
+ * called when module is unloading to unregister line discipline
+ *
+ * Arguments: None
+ * Return Value: None
+ */
+void cleanup_module(void)
+{
+ int status;
+ /* Release tty registration of line discipline */
+ if ((status = tty_register_ldisc(N_HDLC, NULL)))
+ printk("N_HDLC: can't unregister line discipline (err = %d)\n", status);
+ else
+ printk("N_HDLC: line discipline unregistered\n");
+}
diff -u --recursive --new-file v2.2.4/linux/drivers/char/stallion.c linux/drivers/char/stallion.c
--- v2.2.4/linux/drivers/char/stallion.c Thu Dec 31 10:29:00 1998
+++ linux/drivers/char/stallion.c Sun Mar 28 09:02:27 1999


@@ -3,7 +3,7 @@
X /*

X * stallion.c -- stallion multiport serial driver.


X *
- * Copyright (C) 1996-1998 Stallion Technologies (sup...@stallion.oz.au).
+ * Copyright (C) 1996-1999 Stallion Technologies (sup...@stallion.oz.au).
X * Copyright (C) 1994-1996 Greg Ungerer (ge...@stallion.oz.au).
X *
X * This code is loosely based on the Linux serial driver, written by

@@ -27,28 +27,18 @@


X /*****************************************************************************/
X
X #include <linux/module.h>
-#include <linux/errno.h>
-#include <linux/sched.h>

-#include <linux/wait.h>
+#include <linux/malloc.h>
X #include <linux/interrupt.h>
-#include <linux/termios.h>
-#include <linux/fcntl.h>
-#include <linux/tty_driver.h>
-#include <linux/tty.h>
X #include <linux/tty_flip.h>
X #include <linux/serial.h>

X #include <linux/cd1400.h>
X #include <linux/sc26198.h>
X #include <linux/comstats.h>
X #include <linux/stallion.h>


-#include <linux/string.h>
-#include <linux/malloc.h>
X #include <linux/ioport.h>

-#include <linux/config.h>
X #include <linux/init.h>
X #include <linux/smp_lock.h>
X
-#include <asm/system.h>


X #include <asm/io.h>
X #include <asm/uaccess.h>
X

@@ -78,7 +68,7 @@
X * stl_brdconf[] array is a board. Each line contains io/irq/memory
X * ranges for that board (as well as what type of board it is).
X * Some examples:
- * { BRD_EASYIO, 0x2a0, 0, 0, 10, 0 }
+ * { BRD_EASYIO, 0x2a0, 0, 0, 10, 0 },
X * This line would configure an EasyIO board (4 or 8, no difference),
X * at io address 2a0 and irq 10.
X * Another example:
@@ -105,7 +95,7 @@
X } stlconf_t;
X
X static stlconf_t stl_brdconf[] = {
- { BRD_EASYIO, 0x2a0, 0, 0, 10, 0 },
+ /*{ BRD_EASYIO, 0x2a0, 0, 0, 10, 0 },*/
X };
X
X static int stl_nrbrds = sizeof(stl_brdconf) / sizeof(stlconf_t);
@@ -144,7 +134,7 @@
X */
X static char *stl_drvtitle = "Stallion Multiport Serial Driver";
X static char *stl_drvname = "stallion";
-static char *stl_drvversion = "5.4.7";
+static char *stl_drvversion = "5.5.1";
X static char *stl_serialname = "ttyE";
X static char *stl_calloutname = "cue";
X
@@ -259,6 +249,85 @@
X
X /*****************************************************************************/
X

+#ifdef MODULE
+/*
+ * Define some string labels for arguments passed from the module
+ * load line. These allow for easy board definitions, and easy
+ * modification of the io, memory and irq resoucres.
+ */
+

+static char *board0[4];
+static char *board1[4];
+static char *board2[4];
+static char *board3[4];
+
+static char **stl_brdsp[] = {


+ (char **) &board0,
+ (char **) &board1,
+ (char **) &board2,
+ (char **) &board3
+};
+
+/*
+ * Define a set of common board names, and types. This is used to
+ * parse any module arguments.
+ */
+

+typedef struct stlbrdtype {


+ char *name;
+ int type;

+} stlbrdtype_t;
+
+static stlbrdtype_t stl_brdstr[] = {
+ { "easyio", BRD_EASYIO },
+ { "eio", BRD_EASYIO },
+ { "20", BRD_EASYIO },
+ { "ec8/32", BRD_ECH },
+ { "ec8/32-at", BRD_ECH },
+ { "ec8/32-isa", BRD_ECH },
+ { "ech", BRD_ECH },
+ { "echat", BRD_ECH },
+ { "21", BRD_ECH },
+ { "ec8/32-mc", BRD_ECHMC },
+ { "ec8/32-mca", BRD_ECHMC },
+ { "echmc", BRD_ECHMC },
+ { "echmca", BRD_ECHMC },
+ { "22", BRD_ECHMC },
+ { "ec8/32-pc", BRD_ECHPCI },
+ { "ec8/32-pci", BRD_ECHPCI },
+ { "26", BRD_ECHPCI },
+ { "ec8/64-pc", BRD_ECH64PCI },
+ { "ec8/64-pci", BRD_ECH64PCI },
+ { "ech-pci", BRD_ECH64PCI },
+ { "echpci", BRD_ECH64PCI },
+ { "echpc", BRD_ECH64PCI },
+ { "27", BRD_ECH64PCI },
+ { "easyio-pc", BRD_EASYIOPCI },
+ { "easyio-pci", BRD_EASYIOPCI },
+ { "eio-pci", BRD_EASYIOPCI },
+ { "eiopci", BRD_EASYIOPCI },
+ { "28", BRD_EASYIOPCI },


+};
+
+/*
+ * Define the module agruments.
+ */
+MODULE_AUTHOR("Greg Ungerer");

+MODULE_DESCRIPTION("Stallion Multiport Serial Driver");
+
+MODULE_PARM(board0, "1-4s");
+MODULE_PARM_DESC(board0, "Board 0 config -> name[,ioaddr[,ioaddr2][,irq]]");
+MODULE_PARM(board1, "1-4s");
+MODULE_PARM_DESC(board1, "Board 1 config -> name[,ioaddr[,ioaddr2][,irq]]");
+MODULE_PARM(board2, "1-4s");
+MODULE_PARM_DESC(board2, "Board 2 config -> name[,ioaddr[,ioaddr2][,irq]]");
+MODULE_PARM(board3, "1-4s");
+MODULE_PARM_DESC(board3, "Board 3 config -> name[,ioaddr[,ioaddr2][,irq]]");


+
+#endif
+
+/*****************************************************************************/
+

X /*
X * Hardware ID bits for the EasyIO and ECH boards. These defines apply
X * to the directly accessible io ports of these boards (not the uarts -
@@ -399,9 +468,11 @@


X /*
X * Define some handy local macros...
X */

-#ifndef MIN


-#define MIN(a,b) (((a) <= (b)) ? (a) : (b))

-#endif


+#undef MIN
+#define MIN(a,b) (((a) <= (b)) ? (a) : (b))
+
+#undef TOLOWER
+#define TOLOWER(x) ((((x) >= 'A') && ((x) <= 'Z')) ? ((x) + 0x20) : (x))
X
X /*****************************************************************************/
X

@@ -412,6 +483,10 @@


X #ifdef MODULE
X int init_module(void);
X void cleanup_module(void);

+static void stl_argbrds(void);
+static int stl_parsebrd(stlconf_t *confp, char **argp);
+
+static unsigned long stl_atol(char *str);
X #endif
X
X int stl_init(void);
@@ -459,15 +534,17 @@
X static void stl_echpci64intr(stlbrd_t *brdp);
X static void stl_offintr(void *private);
X static void *stl_memalloc(int len);
+static stlbrd_t *stl_allocbrd(void);
X static stlport_t *stl_getport(int brdnr, int panelnr, int portnr);
X
X static inline int stl_initbrds(void);
X static inline int stl_initeio(stlbrd_t *brdp);
X static inline int stl_initech(stlbrd_t *brdp);
+static inline int stl_getbrdnr(void);
X
X #ifdef CONFIG_PCI
X static inline int stl_findpcibrds(void);
-static inline int stl_initpcibrd(int brdtype, struct pci_dev *dev);
+static inline int stl_initpcibrd(int brdtype, struct pci_dev *devp);
X #endif
X
X /*
@@ -747,7 +824,8 @@
X kfree_s(stl_tmpwritebuf, STL_TXBUFSIZE);
X
X for (i = 0; (i < stl_nrbrds); i++) {
- brdp = stl_brds[i];
+ if ((brdp = stl_brds[i]) == (stlbrd_t *) NULL)
+ continue;
X for (j = 0; (j < STL_MAXPANELS); j++) {
X panelp = brdp->panels[j];
X if (panelp == (stlpanel_t *) NULL)
@@ -779,6 +857,124 @@


X restore_flags(flags);
X }
X
+/*****************************************************************************/
+
+/*
+ * Check for any arguments passed in on the module load command line.
+ */
+

+static void stl_argbrds()
+{
+ stlconf_t conf;
+ stlbrd_t *brdp;


+ int nrargs, i;
+
+#if DEBUG

+ printk("stl_argbrds()\n");
+#endif
+
+ nrargs = sizeof(stl_brdsp) / sizeof(char **);
+
+ for (i = stl_nrbrds; (i < nrargs); i++) {
+ memset(&conf, 0, sizeof(conf));
+ if (stl_parsebrd(&conf, stl_brdsp[i]) == 0)
+ continue;
+ if ((brdp = stl_allocbrd()) == (stlbrd_t *) NULL)
+ continue;
+ stl_nrbrds = i + 1;


+ brdp->brdnr = i;
+ brdp->brdtype = conf.brdtype;

+ brdp->ioaddr1 = conf.ioaddr1;
+ brdp->ioaddr2 = conf.ioaddr2;
+ brdp->irq = conf.irq;
+ brdp->irqtype = conf.irqtype;
+ stl_brdinit(brdp);


+ }
+}
+
+/*****************************************************************************/
+
+/*
+ * Convert an ascii string number into an unsigned long.
+ */
+

+static unsigned long stl_atol(char *str)

+static int stl_parsebrd(stlconf_t *confp, char **argp)


+{
+ char *sp;
+ int nrbrdnames, i;
+
+#if DEBUG

+ printk("stl_parsebrd(confp=%x,argp=%x)\n", (int) confp, (int) argp);


+#endif
+
+ if ((argp[0] == (char *) NULL) || (*argp[0] == 0))
+ return(0);
+
+ for (sp = argp[0], i = 0; ((*sp != 0) && (i < 25)); sp++, i++)
+ *sp = TOLOWER(*sp);
+

+ nrbrdnames = sizeof(stl_brdstr) / sizeof(stlbrdtype_t);


+ for (i = 0; (i < nrbrdnames); i++) {

+ if (strcmp(stl_brdstr[i].name, argp[0]) == 0)


+ break;
+ }
+ if (i >= nrbrdnames) {
+ printk("STALLION: unknown board name, %s?\n", argp[0]);
+ return(0);
+ }
+

+ confp->brdtype = stl_brdstr[i].type;
+
+ i = 1;
+ if ((argp[i] != (char *) NULL) && (*argp[i] != 0))
+ confp->ioaddr1 = stl_atol(argp[i]);
+ i++;
+ if (confp->brdtype == BRD_ECH) {
+ if ((argp[i] != (char *) NULL) && (*argp[i] != 0))
+ confp->ioaddr2 = stl_atol(argp[i]);
+ i++;
+ }
+ if ((argp[i] != (char *) NULL) && (*argp[i] != 0))
+ confp->irq = stl_atol(argp[i]);


+ return(1);
+}
+
X #endif
X
X /*****************************************************************************/

@@ -794,6 +990,28 @@
X
X /*****************************************************************************/
X

+/*
+ * Allocate a new board structure. Fill out the basic info in it.
+ */
+

+static stlbrd_t *stl_allocbrd()
+{
+ stlbrd_t *brdp;
+
+ brdp = (stlbrd_t *) stl_memalloc(sizeof(stlbrd_t));
+ if (brdp == (stlbrd_t *) NULL) {


+ printk("STALLION: failed to allocate memory (size=%d)\n",

+ sizeof(stlbrd_t));
+ return((stlbrd_t *) NULL);
+ }
+
+ memset(brdp, 0, sizeof(stlbrd_t));
+ brdp->magic = STL_BOARDMAGIC;


+ return(brdp);
+}
+
+/*****************************************************************************/
+

X static int stl_open(struct tty_struct *tty, struct file *filp)
X {
X stlport_t *portp;
@@ -1121,7 +1339,6 @@
X
X down(&stl_tmpwritesem);
X copy_from_user(stl_tmpwritebuf, chbuf, count);
- up(&stl_tmpwritesem);
X chbuf = &stl_tmpwritebuf[0];
X }
X
@@ -1154,6 +1371,9 @@
X clear_bit(ASYI_TXLOW, &portp->istate);
X stl_startrxtx(portp, -1, 1);
X
+ if (from_user)
+ up(&stl_tmpwritesem);
+
X return(count);
X }
X
@@ -2185,12 +2405,12 @@
X }
X
X if (check_region(brdp->ioaddr1, brdp->iosize1)) {


- printk("STALLION: Warning, unit %d I/O address %x conflicts "
+ printk("STALLION: Warning, board %d I/O address %x conflicts "

X "with another device\n", brdp->brdnr, brdp->ioaddr1);
X }
X if (brdp->iosize2 > 0) {
X if (check_region(brdp->ioaddr2, brdp->iosize2)) {


- printk("STALLION: Warning, unit %d I/O address %x "

+ printk("STALLION: Warning, board %d I/O address %x "

X "conflicts with another device\n",
X brdp->brdnr, brdp->ioaddr2);
X }
@@ -2376,7 +2596,7 @@
X conflict = check_region(brdp->ioaddr2, brdp->iosize2) ?
X brdp->ioaddr2 : 0;
X if (conflict) {


- printk("STALLION: Warning, unit %d I/O address %x conflicts "
+ printk("STALLION: Warning, board %d I/O address %x conflicts "

X "with another device\n", brdp->brdnr, conflict);
X }
X
@@ -2499,14 +2719,14 @@
X stl_initech(brdp);
X break;


X default:
- printk("STALLION: unit=%d is unknown board type=%d\n",
+ printk("STALLION: board=%d is unknown board type=%d\n",
X brdp->brdnr, brdp->brdtype);
X return(ENODEV);
X }
X

X stl_brds[brdp->brdnr] = brdp;
X if ((brdp->state & BRD_FOUND) == 0) {
- printk("STALLION: %s board not found, unit=%d io=%x irq=%d\n",
+ printk("STALLION: %s board not found, board=%d io=%x irq=%d\n",
X stl_brdnames[brdp->brdtype], brdp->brdnr,
X brdp->ioaddr1, brdp->irq);
X return(ENODEV);
@@ -2516,7 +2736,7 @@
X if (brdp->panels[i] != (stlpanel_t *) NULL)
X stl_initports(brdp, brdp->panels[i]);
X
- printk("STALLION: %s found, unit=%d io=%x irq=%d "
+ printk("STALLION: %s found, board=%d io=%x irq=%d "
X "nrpanels=%d nrports=%d\n", stl_brdnames[brdp->brdtype],
X brdp->brdnr, brdp->ioaddr1, brdp->irq, brdp->nrpanels,
X brdp->nrports);
@@ -2525,6 +2745,26 @@
X
X /*****************************************************************************/
X
+/*


+ * Find the next available board number that is free.
+ */
+

+static inline int stl_getbrdnr()


+{
+ int i;
+
+ for (i = 0; (i < STL_MAXBRDS); i++) {

+ if (stl_brds[i] == (stlbrd_t *) NULL) {
+ if (i >= stl_nrbrds)
+ stl_nrbrds = i + 1;


+ return(i);
+ }
+ }
+ return(-1);
+}
+
+/*****************************************************************************/
+

X #ifdef CONFIG_PCI
X
X /*
@@ -2533,42 +2773,32 @@
X * configuration space.
X */
X
-static inline int stl_initpcibrd(int brdtype, struct pci_dev *dev)
+static inline int stl_initpcibrd(int brdtype, struct pci_dev *devp)
X {
- unsigned int bar[4];
X stlbrd_t *brdp;
- int i;
- unsigned char irq;
X
X #if DEBUG
- printk("stl_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n",
- brdtype, dev->bus->number, dev->devfn);
+ printk("stl_initpcibrd(brdtype=%d,busnr=%x,devnr=%x)\n", brdtype,


+ dev->bus->number, dev->devfn);

X #endif
X
- brdp = (stlbrd_t *) stl_memalloc(sizeof(stlbrd_t));
- if (brdp == (stlbrd_t *) NULL) {
- printk("STALLION: failed to allocate memory (size=%d)\n",
- sizeof(stlbrd_t));
+ if ((brdp = stl_allocbrd()) == (stlbrd_t *) NULL)
X return(-ENOMEM);
+ if ((brdp->brdnr = stl_getbrdnr()) < 0) {


+ printk("STALLION: too many boards found, "
+ "maximum supported %d\n", STL_MAXBRDS);
+ return(0);

X }
-
- memset(brdp, 0, sizeof(stlbrd_t));
- brdp->magic = STL_BOARDMAGIC;
- brdp->brdnr = stl_nrbrds++;
X brdp->brdtype = brdtype;
X
X /*
- * Read in all the BAR registers from this board. Different Stallion
- * boards use these in different ways, so we just read in the whole
- * lot and then figure out what is what later.
- */
- for (i = 0; (i < 4); i++)
- bar[i] = dev->base_address[i];
- irq = dev->irq;
-
+ * Different Stallion boards use the BAR registers in different ways,
+ * so set up io addresses based on board type.
+ */
X #if DEBUG
X printk("%s(%d): BAR[]=%x,%x,%x,%x IRQ=%x\n", __FILE__, __LINE__,
- bar[0], bar[1], bar[2], bar[3], irq);


+ devp->base_address[0], devp->base_address[1],

+ devp->base_address[2], devp->base_address[3], devp->irq);
X #endif
X
X /*
@@ -2577,29 +2807,34 @@
X */
X switch (brdtype) {
X case BRD_ECHPCI:
- brdp->ioaddr2 = (bar[0] & PCI_BASE_ADDRESS_IO_MASK);
- brdp->ioaddr1 = (bar[1] & PCI_BASE_ADDRESS_IO_MASK);
+ brdp->ioaddr2 = (devp->base_address[0] &
+ PCI_BASE_ADDRESS_IO_MASK);
+ brdp->ioaddr1 = (devp->base_address[1] &
+ PCI_BASE_ADDRESS_IO_MASK);
X break;
X case BRD_ECH64PCI:
- brdp->ioaddr2 = (bar[2] & PCI_BASE_ADDRESS_IO_MASK);
- brdp->ioaddr1 = (bar[1] & PCI_BASE_ADDRESS_IO_MASK);
+ brdp->ioaddr2 = (devp->base_address[2] &
+ PCI_BASE_ADDRESS_IO_MASK);
+ brdp->ioaddr1 = (devp->base_address[1] &
+ PCI_BASE_ADDRESS_IO_MASK);
X break;
X case BRD_EASYIOPCI:
- brdp->ioaddr1 = (bar[2] & PCI_BASE_ADDRESS_IO_MASK);
- brdp->ioaddr2 = (bar[1] & PCI_BASE_ADDRESS_IO_MASK);
+ brdp->ioaddr1 = (devp->base_address[2] &
+ PCI_BASE_ADDRESS_IO_MASK);
+ brdp->ioaddr2 = (devp->base_address[1] &
+ PCI_BASE_ADDRESS_IO_MASK);
X break;
X default:
X printk("STALLION: unknown PCI board type=%d\n", brdtype);
X break;
X }
X
- brdp->irq = irq;
+ brdp->irq = devp->irq;
X stl_brdinit(brdp);
X
X return(0);
X }
X
-


X /*****************************************************************************/
X
X /*

@@ -2621,17 +2856,8 @@
X return(0);
X
X for (i = 0; (i < stl_nrpcibrds); i++)
- while ((dev = pci_find_device(stl_pcibrds[i].vendid, stl_pcibrds[i].devid, dev))) {
-
-/*
- * Check that we can handle more boards...
- */
- if (stl_nrbrds >= STL_MAXBRDS) {
- printk("STALLION: too many boards found, "


- "maximum supported %d\n", STL_MAXBRDS);

- i = stl_nrpcibrds;
- break;
- }
+ while ((dev = pci_find_device(stl_pcibrds[i].vendid,
+ stl_pcibrds[i].devid, dev))) {
X
X /*
X * Found a device on the PCI bus that has our vendor and
@@ -2680,15 +2906,11 @@
X */
X for (i = 0; (i < stl_nrbrds); i++) {
X confp = &stl_brdconf[i];
- brdp = (stlbrd_t *) stl_memalloc(sizeof(stlbrd_t));
- if (brdp == (stlbrd_t *) NULL) {


- printk("STALLION: failed to allocate memory "

- "(size=%d)\n", sizeof(stlbrd_t));
+#ifdef MODULE
+ stl_parsebrd(confp, stl_brdsp[i]);
+#endif
+ if ((brdp = stl_allocbrd()) == (stlbrd_t *) NULL)
X return(-ENOMEM);
- }
- memset(brdp, 0, sizeof(stlbrd_t));
-
- brdp->magic = STL_BOARDMAGIC;


X brdp->brdnr = i;
X brdp->brdtype = confp->brdtype;

X brdp->ioaddr1 = confp->ioaddr1;
@@ -2698,11 +2920,14 @@
X stl_brdinit(brdp);
X }
X
-#ifdef CONFIG_PCI
X /*
- * If the PCI BIOS support is compiled in then let's go looking for
- * ECH-PCI boards.
+ * Find any dynamically supported boards. That is via module load
+ * line options or auto-detected on the PCI bus.
X */
+#ifdef MODULE
+ stl_argbrds();
+#endif
+#ifdef CONFIG_PCI
X stl_findpcibrds();
X #endif
X
diff -u --recursive --new-file v2.2.4/linux/drivers/char/synclink.c linux/drivers/char/synclink.c
--- v2.2.4/linux/drivers/char/synclink.c Wed Dec 31 16:00:00 1969
+++ linux/drivers/char/synclink.c Sun Mar 28 10:31:31 1999
@@ -0,0 +1,6989 @@
+/*
+ * linux/drivers/char/synclink.c
+ *
+ * Device driver for Microgate SyncLink ISA and PCI
+ * high speed multiprotocol serial adapters.
+ *
+ * written by Paul Fulghum for Microgate Corporation
+ * pau...@microgate.com
+ *
+ * Microgate and SyncLink are trademarks of Microgate Corporation
+ *
+ * Derived from serial.c written by Theodore Ts'o and Linus Torvalds


+ *
+ * Original release 01/11/99
+ *
+ * This code is released under the GNU General Public License (GPL)
+ *

+ * This driver is primarily intended for use in synchronous
+ * HDLC mode. Asynchronous mode is also provided.
+ *
+ * When operating in synchronous mode, each call to mgsl_write()
+ * contains exactly one complete HDLC frame. Calling mgsl_put_char
+ * will start assembling an HDLC frame that will not be sent until
+ * mgsl_flush_chars or mgsl_write is called.
+ *
+ * Synchronous receive data is reported as complete frames. To accomplish
+ * this, the TTY flip buffer is bypassed (too small to hold largest
+ * frame and may fragment frames) and the line discipline
+ * receive entry point is called directly.
+ *
+ * This driver has been tested with a slightly modified ppp.c driver
+ * for synchronous PPP.


+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
+ * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+

+#define VERSION(ver,rel,seq) (((ver)<<16) | ((rel)<<8) | (seq))
+#define BREAKPOINT() asm(" int $3");
+
+#define MAX_ISA_DEVICES 10
+
+#include <linux/config.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/timer.h>
+#include <linux/interrupt.h>
+#include <linux/pci.h>
+#include <linux/tty.h>
+#include <linux/tty_flip.h>
+#include <linux/serial.h>
+#include <linux/major.h>
+#include <linux/string.h>
+#include <linux/fcntl.h>
+#include <linux/ptrace.h>
+#include <linux/ioport.h>
+#include <linux/mm.h>
+#include <linux/malloc.h>
+
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+#include <linux/vmalloc.h>
+#include <linux/init.h>
+#include <asm/serial.h>
+#else
+#include <linux/bios32.h>
+#endif
+
+#include <linux/delay.h>
+#include <linux/ioctl.h>
+
+#include <asm/system.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+#include <asm/dma.h>
+#include <asm/bitops.h>
+#include <asm/types.h>
+#include <linux/termios.h>
+#include <linux/tqueue.h>
+
+#if LINUX_VERSION_CODE >= VERSION(2,1,4)
+#include <asm/segment.h>
+#define GET_USER(error,value,addr) error = get_user(value,addr)
+#define COPY_FROM_USER(error,dest,src,size) error = copy_from_user(dest,src,size) ? -EFAULT : 0
+#define PUT_USER(error,value,addr) error = put_user(value,addr)
+#define COPY_TO_USER(error,dest,src,size) error = copy_to_user(dest,src,size) ? -EFAULT : 0
+
+#if LINUX_VERSION_CODE >= VERSION(2,1,5)
+#include <asm/uaccess.h>
+#endif
+
+#else /* 2.0.x and 2.1.x before 2.1.4 */
+
+#define GET_USER(error,value,addr) \
+do { \
+ error = verify_area (VERIFY_READ, (void *) addr, sizeof (value)); \
+ if (error == 0) \
+ value = get_user(addr); \
+} while (0)
+
+#define COPY_FROM_USER(error,dest,src,size) \
+do { \
+ error = verify_area (VERIFY_READ, (void *) src, size); \
+ if (error == 0) \
+ memcpy_fromfs (dest, src, size); \
+} while (0)
+
+#define PUT_USER(error,value,addr) \
+do { \
+ error = verify_area (VERIFY_WRITE, (void *) addr, sizeof (value)); \
+ if (error == 0) \
+ put_user (value, addr); \
+} while (0)
+
+#define COPY_TO_USER(error,dest,src,size) \
+do { \
+ error = verify_area (VERIFY_WRITE, (void *) dest, size); \
+ if (error == 0) \
+ memcpy_tofs (dest, src, size); \
+} while (0)
+
+#endif
+
+#if LINUX_VERSION_CODE < VERSION(2,1,0)
+/*
+ * This is used to figure out the divisor speeds and the timeouts
+ */
+static int baud_table[] = {
+ 0, 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
+ 9600, 19200, 38400, 57600, 115200, 230400, 460800, 0 };
+
+#define __init
+#define ioremap(a,b) vremap((a),(b))
+#define iounmap(a) vfree((a))
+#define SERIAL_TYPE_NORMAL 1
+#define SERIAL_TYPE_CALLOUT 2
+typedef int spinlock_t;
+#define spin_lock_irqsave(a,b) {save_flags((b));cli();}
+#define spin_unlock_irqrestore(a,b) {restore_flags((b));}
+#define spin_lock(a)
+#define spin_unlock(a)
+#define schedule_timeout(a){current->timeout = jiffies + (a); schedule();}
+#define signal_pending(a) ((a)->signal & ~(a)->blocked)
+#endif
+
+
+
+#include "linux/synclink.h"
+
+#define RCLRVALUE 0xffff
+
+MGSL_PARAMS default_params = {
+ MGSL_MODE_HDLC, /* unsigned long mode */
+ 0, /* unsigned char loopback; */
+ HDLC_FLAG_UNDERRUN_ABORT15, /* unsigned short flags; */
+ HDLC_ENCODING_NRZI_SPACE, /* unsigned char encoding; */
+ 0, /* unsigned long clock_speed; */
+ 0xff, /* unsigned char addr_filter; */
+ HDLC_CRC_16_CCITT, /* unsigned short crc_type; */
+ HDLC_PREAMBLE_LENGTH_8BITS, /* unsigned char preamble_length; */
+ HDLC_PREAMBLE_PATTERN_NONE, /* unsigned char preamble; */
+ 9600, /* unsigned long data_rate; */
+ 8, /* unsigned char data_bits; */
+ 1, /* unsigned char stop_bits; */
+ ASYNC_PARITY_NONE /* unsigned char parity; */
+};
+
+#define SHARED_MEM_ADDRESS_SIZE 0x40000
+#define BUFFERLISTSIZE (PAGE_SIZE)
+#define DMABUFFERSIZE (PAGE_SIZE)
+#define MAXRXFRAMES 7
+
+typedef struct _DMABUFFERENTRY
+{
+ u32 phys_addr; /* 32-bit flat physical address of data buffer */
+ u16 count; /* buffer size/data count */
+ u16 status; /* Control/status field */
+ u16 rcc; /* character count field */
+ u16 reserved; /* padding required by 16C32 */
+ u32 link; /* 32-bit flat link to next buffer entry */
+ char *virt_addr; /* virtual address of data buffer */
+ u32 phys_entry; /* physical address of this buffer entry */
+} DMABUFFERENTRY, *DMAPBUFFERENTRY;
+
+/* The queue of BH actions to be performed */
+
+#define BH_TYPE_RECEIVE_DATA 1
+#define BH_TYPE_RECEIVE_STATUS 2
+#define BH_TYPE_RECEIVE_DMA 3
+#define BH_TYPE_TRANSMIT_DATA 4
+#define BH_TYPE_TRANSMIT_STATUS 5
+#define BH_TYPE_STATUS 6
+
+typedef struct _BH_EVENT {
+ unsigned char type; /* Set by interrupt routines to reqst */
+ u16 status;
+ struct _BH_EVENT *link;
+
+} BH_EVENT, *BH_QUEUE; /* Queue of BH actions to be done. */
+
+#define MAX_BH_QUEUE_ENTRIES 200
+
+#define RELEVANT_IFLAG(iflag) (iflag & (IGNBRK|BRKINT|IGNPAR|PARMRK|INPCK))
+/*
+ * Device instance data structure
+ */
+
+struct mgsl_struct {
+ int magic;
+ int flags;
+ int count; /* count of opens */
+ int line;
+ unsigned short close_delay;
+ unsigned short closing_wait; /* time to wait before closing */
+
+ struct mgsl_icount icount;
+
+ struct termios normal_termios;
+ struct termios callout_termios;
+
+ struct tty_struct *tty;
+ int timeout;
+ int x_char; /* xon/xoff character */
+ int blocked_open; /* # of blocked opens */
+ long session; /* Session of opening process */
+ long pgrp; /* pgrp of opening process */
+ u16 read_status_mask;
+ u16 ignore_status_mask;
+ unsigned char *xmit_buf;
+ int xmit_head;
+ int xmit_tail;
+ int xmit_cnt;
+
+ struct wait_queue *open_wait;
+ struct wait_queue *close_wait;
+
+ struct wait_queue *status_event_wait_q;
+ struct wait_queue *event_wait_q;
+ struct timer_list tx_timer; /* HDLC transmit timeout timer */
+ struct mgsl_struct *next_device; /* device list link */
+
+ spinlock_t irq_spinlock; /* spinlock for synchronizing with ISR */
+ struct tq_struct task; /* task structure for scheduling bh */
+
+ u32 EventMask; /* event trigger mask */
+ u32 RecordedEvents; /* pending events */
+
+ u32 max_frame_size; /* as set by device config */
+
+ BH_EVENT bh_queue[MAX_BH_QUEUE_ENTRIES]; /* Pointer to alloc'ed block */
+ BH_QUEUE bh_queue_head; /* Queue of BH actions */
+ BH_QUEUE bh_queue_tail; /* Tail of above for perf. */
+ BH_QUEUE free_bh_queue_head; /* Queue of Free BH */
+ BH_QUEUE free_bh_queue_tail; /* Tail of above for perf. */
+ BH_QUEUE bh_action; /* Action for BH */
+ int bh_running; /* Protection from multiple */
+ int isr_overflow;
+ int bh_requested;
+
+ char *buffer_list; /* virtual address of Rx & Tx buffer lists */
+ unsigned long buffer_list_phys;
+
+ unsigned int rx_buffer_count; /* count of total allocated Rx buffers */
+ DMABUFFERENTRY *rx_buffer_list; /* list of receive buffer entries */
+ unsigned int current_rx_buffer;
+
+ unsigned int tx_buffer_count; /* count of total allocated Tx buffers */
+ DMABUFFERENTRY *tx_buffer_list; /* list of transmit buffer entries */
+
+ int rx_enabled;
+ int rx_overflow;
+
+ int tx_enabled;
+ int tx_active;
+ u32 idle_mode;
+
+ u16 cmr_value;
+
+ char device_name[25]; /* device instance name */
+
+ unsigned int bus_type; /* expansion bus type (ISA,EISA,PCI) */
+ unsigned char bus; /* expansion bus number (zero based) */
+ unsigned char function; /* PCI device number */
+
+ unsigned int io_base; /* base I/O address of adapter */
+ unsigned int io_addr_size; /* size of the I/O address range */
+ int io_addr_requested; /* nonzero if I/O address requested */
+
+ unsigned int irq_level; /* interrupt level */
+ unsigned long irq_flags;
+ int irq_requested; /* nonzero if IRQ requested */
+
+ unsigned int dma_level; /* DMA channel */
+ int dma_requested; /* nonzero if dma channel requested */
+
+ u16 mbre_bit;
+ u16 loopback_bits;
+ u16 usc_idle_mode;
+
+ MGSL_PARAMS params; /* communications parameters */
+
+ unsigned char serial_signals; /* current serial signal states */
+
+ int irq_occurred; /* for diagnostics use */
+ unsigned int init_error; /* Initialization startup error (DIAGS) */
+ int fDiagnosticsmode; /* Driver in Diagnostic mode? (DIAGS) */
+
+ u32 last_mem_alloc;
+ unsigned char* memory_base; /* shared memory address (PCI only) */
+ u32 phys_memory_base;
+
+ unsigned char* lcr_base; /* local config registers (PCI only) */
+ u32 phys_lcr_base;
+ u32 lcr_offset;
+
+ u32 misc_ctrl_value;
+ char flag_buf[HDLC_MAX_FRAME_SIZE];
+ char char_buf[HDLC_MAX_FRAME_SIZE];
+ BOOLEAN drop_rts_on_tx_done;
+};
+
+#define MGSL_MAGIC 0x5401
+
+/*
+ * The size of the serial xmit buffer is 1 page, or 4096 bytes
+ */
+#define SERIAL_XMIT_SIZE 4096
+
+
+/*
+ * These macros define the offsets used in calculating the
+ * I/O address of the specified USC registers.
+ */
+
+
+#define DCPIN 2 /* Bit 1 of I/O address */
+#define SDPIN 4 /* Bit 2 of I/O address */
+
+#define DCAR 0 /* DMA command/address register */
+#define CCAR SDPIN /* channel command/address register */
+#define DATAREG DCPIN + SDPIN /* serial data register */
+#define MSBONLY 0x41
+#define LSBONLY 0x40
+
+/*
+ * These macros define the register address (ordinal number)
+ * used for writing address/value pairs to the USC.
+ */
+
+#define CMR 0x02 /* Channel mode Register */
+#define CCSR 0x04 /* Channel Command/status Register */
+#define CCR 0x06 /* Channel Control Register */
+#define PSR 0x08 /* Port status Register */
+#define PCR 0x0a /* Port Control Register */
+#define TMDR 0x0c /* Test mode Data Register */
+#define TMCR 0x0e /* Test mode Control Register */
+#define CMCR 0x10 /* Clock mode Control Register */
+#define HCR 0x12 /* Hardware Configuration Register */
+#define IVR 0x14 /* Interrupt Vector Register */
+#define IOCR 0x16 /* Input/Output Control Register */
+#define ICR 0x18 /* Interrupt Control Register */
+#define DCCR 0x1a /* Daisy Chain Control Register */
+#define MISR 0x1c /* Misc Interrupt status Register */
+#define SICR 0x1e /* status Interrupt Control Register */
+#define RDR 0x20 /* Receive Data Register */
+#define RMR 0x22 /* Receive mode Register */
+#define RCSR 0x24 /* Receive Command/status Register */
+#define RICR 0x26 /* Receive Interrupt Control Register */
+#define RSR 0x28 /* Receive Sync Register */
+#define RCLR 0x2a /* Receive count Limit Register */
+#define RCCR 0x2c /* Receive Character count Register */
+#define TC0R 0x2e /* Time Constant 0 Register */
+#define TDR 0x30 /* Transmit Data Register */
+#define TMR 0x32 /* Transmit mode Register */
+#define TCSR 0x34 /* Transmit Command/status Register */
+#define TICR 0x36 /* Transmit Interrupt Control Register */
+#define TSR 0x38 /* Transmit Sync Register */
+#define TCLR 0x3a /* Transmit count Limit Register */
+#define TCCR 0x3c /* Transmit Character count Register */
+#define TC1R 0x3e /* Time Constant 1 Register */
+
+
+/*
+ * MACRO DEFINITIONS FOR DMA REGISTERS
+ */
+
+#define DCR 0x06 /* DMA Control Register (shared) */
+#define DACR 0x08 /* DMA Array count Register (shared) */


SHAR_EOF
true || echo 'restore of patch-2.2.5 failed'
fi

echo 'End of part 2'
echo 'File patch-2.2.5 is continued in part 3'
echo 3 > _shar_seq_.tmp

Thomas...@ciw.uni-karlsruhe.de

unread,
Apr 5, 1999, 3:00:00 AM4/5/99
to
Archive-name: v2.2/patch-2.2.5/part4

#!/bin/sh
# this is part 4 of a 8 - part archive


# do not concatenate these parts, unpack them in order with /bin/sh
# file patch-2.2.5 continued
if test ! -r _shar_seq_.tmp; then
echo 'Please unpack part 1 first!'
exit 1
fi
(read Scheck

if test "$Scheck" != 4; then


echo Please unpack part "$Scheck" next!
exit 1
else
exit 0
fi
) < _shar_seq_.tmp || exit 1
if test ! -f _shar_wnt_.tmp; then
echo 'x - still skipping patch-2.2.5'
else
echo 'x - continuing with patch-2.2.5'
sed 's/^X//' << 'SHAR_EOF' >> 'patch-2.2.5' &&

+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_send_xchar(%s,%d)\n",
+ __FILE__,__LINE__, info->device_name, ch );
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_send_xchar"))
+ return;
+
+ info->x_char = ch;
+ if (ch) {
+ /* Make sure transmit interrupts are on */
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ if (!info->tx_enabled)
+ usc_start_transmitter(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+} /* end of mgsl_send_xchar() */
+
+/* mgsl_throttle()
+ *
+ * Signal remote device to throttle send data (our receive data)


+ *
+ * Arguments: tty pointer to tty info structure

+ * Return Value: None
+ */

+static void mgsl_throttle(struct tty_struct * tty)
+{
+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;


+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_throttle(%s) entry\n",
+ __FILE__,__LINE__, info->device_name );
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_throttle"))
+ return;
+
+ if (I_IXOFF(tty))
+ mgsl_send_xchar(tty, STOP_CHAR(tty));
+
+ if (tty->termios->c_cflag & CRTSCTS) {
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ info->serial_signals &= ~SerialSignal_RTS;
+ usc_set_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+} /* end of mgsl_throttle() */
+
+/* mgsl_unthrottle()
+ *
+ * Signal remote device to stop throttling send data (our receive data)


+ *
+ * Arguments: tty pointer to tty info structure

+ * Return Value: None
+ */

+static void mgsl_unthrottle(struct tty_struct * tty)
+{
+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;


+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_unthrottle(%s) entry\n",
+ __FILE__,__LINE__, info->device_name );
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_unthrottle"))
+ return;
+
+ if (I_IXOFF(tty)) {
+ if (info->x_char)
+ info->x_char = 0;
+ else
+ mgsl_send_xchar(tty, START_CHAR(tty));
+ }
+
+ if (tty->termios->c_cflag & CRTSCTS) {
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ info->serial_signals |= SerialSignal_RTS;
+ usc_set_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+
+} /* end of mgsl_unthrottle() */
+
+/* mgsl_get_stats()
+ *
+ * get the current serial parameters information
+ *
+ * Arguments: info pointer to device instance data
+ * user_icount pointer to buffer to hold returned stats
+ *

+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount *user_icount)
+{
+ int err;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_get_params(%s)\n",
+ __FILE__,__LINE__, info->device_name);
+
+ COPY_TO_USER(err,user_icount, &info->icount, sizeof(struct mgsl_icount));
+ if (err) {
+ if ( debug_level >= DEBUG_LEVEL_INFO )
+ printk( "%s(%d):mgsl_get_stats(%s) user buffer copy failed\n",
+ __FILE__,__LINE__,info->device_name);
+ return -EFAULT;
+ }


+
+ return 0;
+

+} /* end of mgsl_get_stats() */
+
+/* mgsl_get_params()
+ *
+ * get the current serial parameters information
+ *
+ * Arguments: info pointer to device instance data
+ * user_params pointer to buffer to hold returned params
+ *

+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_get_params(struct mgsl_struct * info, MGSL_PARAMS *user_params)
+{
+ int err;
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_get_params(%s)\n",
+ __FILE__,__LINE__, info->device_name);
+
+ COPY_TO_USER(err,user_params, &info->params, sizeof(MGSL_PARAMS));
+ if (err) {
+ if ( debug_level >= DEBUG_LEVEL_INFO )
+ printk( "%s(%d):mgsl_get_params(%s) user buffer copy failed\n",
+ __FILE__,__LINE__,info->device_name);
+ return -EFAULT;
+ }


+
+ return 0;
+

+} /* end of mgsl_get_params() */
+
+/* mgsl_set_params()
+ *
+ * set the serial parameters


+ *
+ * Arguments:
+ *

+ * info pointer to device instance data
+ * new_params user buffer containing new serial params
+ *


+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_set_params(struct mgsl_struct * info, MGSL_PARAMS *new_params)


+{
+ unsigned long flags;

+ MGSL_PARAMS tmp_params;
+ int err;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_set_params %s\n", __FILE__,__LINE__,
+ info->device_name );
+ COPY_FROM_USER(err,&tmp_params, new_params, sizeof(MGSL_PARAMS));
+ if (err) {
+ if ( debug_level >= DEBUG_LEVEL_INFO )
+ printk( "%s(%d):mgsl_set_params(%s) user buffer copy failed\n",
+ __FILE__,__LINE__,info->device_name);
+ return -EFAULT;
+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS));
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ mgsl_change_params(info);


+
+ return 0;
+

+} /* end of mgsl_set_params() */
+
+/* mgsl_get_txidle()
+ *
+ * get the current transmit idle mode
+ *
+ * Arguments: info pointer to device instance data
+ * idle_mode pointer to buffer to hold returned idle mode
+ *

+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_get_txidle(struct mgsl_struct * info, int*idle_mode)
+{
+ int err;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_get_txidle(%s)=%d\n",
+ __FILE__,__LINE__, info->device_name, info->idle_mode);
+
+ COPY_TO_USER(err,idle_mode, &info->idle_mode, sizeof(int));
+ if (err) {
+ if ( debug_level >= DEBUG_LEVEL_INFO )
+ printk( "%s(%d):mgsl_get_txidle(%s) user buffer copy failed\n",
+ __FILE__,__LINE__,info->device_name);
+ return -EFAULT;
+ }


+
+ return 0;
+

+} /* end of mgsl_get_txidle() */
+
+/* mgsl_set_txidle() service ioctl to set transmit idle mode
+ *
+ * Arguments: info pointer to device instance data
+ * idle_mode new idle mode
+ *


+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_set_txidle(struct mgsl_struct * info, int idle_mode)


+{
+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_set_txidle(%s,%d)\n", __FILE__,__LINE__,
+ info->device_name, idle_mode );
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ info->idle_mode = idle_mode;
+ usc_set_txidle( info );
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ return 0;
+
+} /* end of mgsl_set_txidle() */
+
+/* mgsl_txenable()
+ *
+ * enable or disable the transmitter


+ *
+ * Arguments:
+ *

+ * info pointer to device instance data
+ * enable 1 = enable, 0 = disable
+ *


+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_txenable(struct mgsl_struct * info, int enable)


+{
+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_txenable(%s,%d)\n", __FILE__,__LINE__,
+ info->device_name, enable);
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ if ( enable ) {
+ if ( !info->tx_enabled )
+ usc_start_transmitter(info);
+ } else {
+ if ( info->tx_enabled )
+ usc_stop_transmitter(info);
+ }
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ return 0;
+
+} /* end of mgsl_txenable() */
+
+/* mgsl_txabort() abort send HDLC frame
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_txabort(struct mgsl_struct * info)


+{
+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_txabort(%s)\n", __FILE__,__LINE__,
+ info->device_name);
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ if ( info->tx_active && info->params.mode == MGSL_MODE_HDLC )
+ usc_TCmd(info,TCmd_SendAbort);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ return 0;
+
+} /* end of mgsl_txabort() */
+
+/* mgsl_rxenable() enable or disable the receiver
+ *
+ * Arguments: info pointer to device instance data
+ * enable 1 = enable, 0 = disable


+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_rxenable(struct mgsl_struct * info, int enable)


+{
+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_rxenable(%s,%d)\n", __FILE__,__LINE__,
+ info->device_name, enable);
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ if ( enable ) {
+ if ( !info->rx_enabled )
+ usc_start_receiver(info);
+ } else {
+ if ( info->rx_enabled )
+ usc_stop_receiver(info);
+ }
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ return 0;
+
+} /* end of mgsl_rxenable() */
+
+/* mgsl_wait_event() wait for specified event to occur
+ *
+ * Arguments: info pointer to device instance data
+ * mask bitmask of events to wait for
+ * Return Value: bit mask of triggering event, otherwise error code
+ */
+static int mgsl_wait_event(struct mgsl_struct * info, int mask)


+{
+ unsigned long flags;

+ int s;
+ int rc=0;
+ u16 regval;
+ struct mgsl_icount cprev, cnow;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_wait_event(%s,%d)\n", __FILE__,__LINE__,
+ info->device_name, mask);
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+
+ /* note the counters on entry */
+ cprev = info->icount;
+
+ if (mask & MgslEvent_ExitHuntMode) {
+ /* enable exit hunt mode IRQ */
+ regval = usc_InReg(info,RICR);
+ if (!(regval & RXSTATUS_EXITED_HUNT))
+ usc_OutReg(info, RICR, regval | RXSTATUS_EXITED_HUNT);
+ }
+
+ if (mask & MgslEvent_IdleReceived) {
+ /* enable idle mode received IRQ */
+ regval = usc_InReg(info,RICR);
+ if (!(regval & RXSTATUS_IDLE_RECEIVED))
+ usc_OutReg(info, RICR, regval | RXSTATUS_IDLE_RECEIVED);
+ }
+
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ while(!rc) {
+ /* sleep until event occurs */
+ interruptible_sleep_on(&info->event_wait_q);
+
+ /* see if a signal woke us */
+ if (signal_pending(current)) {
+ rc = -ERESTARTSYS;
+ break;
+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ /* get icount and serial signal states */
+ cnow = info->icount;
+ s = info->serial_signals;
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ rc = 0;
+
+ if (cnow.dsr != cprev.dsr)
+ rc |= (mask & ((s & SerialSignal_DSR) ?
+ MgslEvent_DsrActive:MgslEvent_DsrInactive));
+
+ if (cnow.dcd != cprev.dcd)
+ rc |= (mask & ((s & SerialSignal_DCD) ?
+ MgslEvent_DcdActive:MgslEvent_DcdInactive));
+
+ if (cnow.cts != cprev.cts)
+ rc |= (mask & ((s & SerialSignal_CTS) ?
+ MgslEvent_CtsActive:MgslEvent_CtsInactive));
+
+ if (cnow.rng != cprev.rng)
+ rc |= (mask & ((s & SerialSignal_RI) ?
+ MgslEvent_RiActive:MgslEvent_RiInactive));
+
+ if (cnow.exithunt != cprev.exithunt)
+ rc |= (mask & MgslEvent_ExitHuntMode);
+
+ if (cnow.rxidle != cprev.rxidle)
+ rc |= (mask & MgslEvent_ExitHuntMode);
+
+ if (!rc)
+ rc = -EIO; /* no change => error */
+
+ cprev = cnow;
+ }
+
+ if (mask & (MgslEvent_ExitHuntMode + MgslEvent_IdleReceived)) {
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ if (!info->event_wait_q) {
+ /* disable enable exit hunt mode/idle rcvd IRQs */
+ regval = usc_InReg(info,RICR);
+ usc_OutReg(info, RICR, regval &
+ ~(RXSTATUS_EXITED_HUNT + RXSTATUS_IDLE_RECEIVED));
+ }
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+
+ return rc;
+
+} /* end of mgsl_wait_event() */
+
+/* get_modem_info()
+ *
+ * Read the state of the serial control and
+ * status signals and return to caller.
+ *
+ * Arguments: info pointer to device instance data
+ * value pointer to int to hold returned info
+ *

+ * Return Value: 0 if success, otherwise error code
+ */

+static int get_modem_info(struct mgsl_struct * info, unsigned int *value)
+{
+ unsigned int result = 0;
+ unsigned long flags;
+ int err;
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_get_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ if (info->serial_signals & SerialSignal_RTS)
+ result |= TIOCM_RTS;
+ if (info->serial_signals & SerialSignal_DTR)
+ result |= TIOCM_DTR;
+ if (info->serial_signals & SerialSignal_DCD)
+ result |= TIOCM_CAR;
+ if (info->serial_signals & SerialSignal_RI)
+ result |= TIOCM_RNG;
+ if (info->serial_signals & SerialSignal_DSR)
+ result |= TIOCM_DSR;
+ if (info->serial_signals & SerialSignal_CTS)
+ result |= TIOCM_CTS;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_get_modem_info %s value=%08X\n",
+ __FILE__,__LINE__, info->device_name, *value );
+
+ PUT_USER(err,result,value);
+ return err;
+} /* end of get_modem_info() */
+
+/* set_modem_info()
+ *
+ * Set the state of the modem control signals (DTR/RTS)


+ *
+ * Arguments:
+ *

+ * info pointer to device instance data
+ * cmd signal command: TIOCMBIS = set bit TIOCMBIC = clear bit
+ * TIOCMSET = set/clear signal values
+ * value bit mask for command
+ *

+ * Return Value: 0 if success, otherwise error code
+ */

+static int set_modem_info(struct mgsl_struct * info, unsigned int cmd,
+ unsigned int *value)
+{
+ int error;
+ unsigned int arg;


+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_set_modem_info %s\n", __FILE__,__LINE__,
+ info->device_name );
+
+ GET_USER(error,arg,value);
+ if (error)
+ return error;
+
+ switch (cmd) {
+ case TIOCMBIS:
+ if (arg & TIOCM_RTS)
+ info->serial_signals |= SerialSignal_RTS;
+ if (arg & TIOCM_DTR)
+ info->serial_signals |= SerialSignal_DTR;
+ break;
+ case TIOCMBIC:
+ if (arg & TIOCM_RTS)
+ info->serial_signals &= ~SerialSignal_RTS;
+ if (arg & TIOCM_DTR)
+ info->serial_signals &= ~SerialSignal_DTR;
+ break;
+ case TIOCMSET:
+ if (arg & TIOCM_RTS)
+ info->serial_signals |= SerialSignal_RTS;
+ else
+ info->serial_signals &= ~SerialSignal_RTS;
+
+ if (arg & TIOCM_DTR)
+ info->serial_signals |= SerialSignal_DTR;
+ else
+ info->serial_signals &= ~SerialSignal_DTR;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_set_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);


+
+ return 0;
+

+} /* end of set_modem_info() */


+
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)

+/* mgsl_break() Set or clear transmit break condition
+ *
+ * Arguments: tty pointer to tty instance data
+ * break_state -1=set break condition, 0=clear


+ * Return Value: None
+ */

+static void mgsl_break(struct tty_struct *tty, int break_state)
+{
+ struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;


+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_break(%s,%d)\n",
+ __FILE__,__LINE__, info->device_name, break_state);
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_break"))
+ return;
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ if (break_state == -1)
+ usc_OutReg(info,IOCR,(u16)(usc_InReg(info,IOCR) | BIT7));
+ else
+ usc_OutReg(info,IOCR,(u16)(usc_InReg(info,IOCR) & ~BIT7));
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+} /* end of mgsl_break() */
+#endif
+
+/* mgsl_ioctl() Service an IOCTL request


+ *
+ * Arguments:
+ *
+ * tty pointer to tty instance data

+ * file pointer to associated file object for device


+ * cmd IOCTL command code

+ * arg command argument/context
+ *

+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_ioctl(struct tty_struct *tty, struct file * file,


+ unsigned int cmd, unsigned long arg)
+{

+ int error;
+ struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ struct mgsl_icount cprev, cnow; /* kernel counter temps */
+ struct serial_icounter_struct *p_cuser; /* user space */


+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_ioctl %s cmd=%08X\n", __FILE__,__LINE__,
+ info->device_name, cmd );
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_ioctl"))
+ return -ENODEV;
+
+ if ((cmd != TIOCGSERIAL) && (cmd != TIOCSSERIAL) &&
+ (cmd != TIOCMIWAIT) && (cmd != TIOCGICOUNT)) {
+ if (tty->flags & (1 << TTY_IO_ERROR))


+ return -EIO;
+ }
+

+ switch (cmd) {
+ case TIOCMGET:
+ return get_modem_info(info, (unsigned int *) arg);
+ case TIOCMBIS:
+ case TIOCMBIC:
+ case TIOCMSET:
+ return set_modem_info(info, cmd, (unsigned int *) arg);
+ case MGSL_IOCGPARAMS:
+ return mgsl_get_params(info,(MGSL_PARAMS *)arg);
+ case MGSL_IOCSPARAMS:
+ return mgsl_set_params(info,(MGSL_PARAMS *)arg);
+ case MGSL_IOCGTXIDLE:
+ return mgsl_get_txidle(info,(int*)arg);
+ case MGSL_IOCSTXIDLE:
+ return mgsl_set_txidle(info,(int)arg);
+ case MGSL_IOCTXENABLE:
+ return mgsl_txenable(info,(int)arg);
+ case MGSL_IOCRXENABLE:
+ return mgsl_rxenable(info,(int)arg);
+ case MGSL_IOCTXABORT:
+ return mgsl_txabort(info);
+ case MGSL_IOCGSTATS:
+ return mgsl_get_stats(info,(struct mgsl_icount*)arg);
+ case MGSL_IOCWAITEVENT:
+ return mgsl_wait_event(info,(int)arg);
+ case MGSL_IOCCLRMODCOUNT:
+ while(MOD_IN_USE)
+ MOD_DEC_USE_COUNT;
+ return 0;
+ /*
+ * Wait for any of the 4 modem inputs (DCD,RI,DSR,CTS) to change
+ * - mask passed in arg for lines of interest
+ * (use |'ed TIOCM_RNG/DSR/CD/CTS for masking)
+ * Caller should use TIOCGICOUNT to see which one it was
+ */
+ case TIOCMIWAIT:
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ /* note the counters on entry */
+ cprev = info->icount;
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ while (1) {
+ interruptible_sleep_on(&info->status_event_wait_q);
+ /* see if a signal did it */
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ save_flags(flags); cli();
+ cnow = info->icount; /* atomic copy */
+ restore_flags(flags);
+ if (cnow.rng == cprev.rng && cnow.dsr == cprev.dsr &&
+ cnow.dcd == cprev.dcd && cnow.cts == cprev.cts)
+ return -EIO; /* no change => error */
+ if ( ((arg & TIOCM_RNG) && (cnow.rng != cprev.rng)) ||
+ ((arg & TIOCM_DSR) && (cnow.dsr != cprev.dsr)) ||
+ ((arg & TIOCM_CD) && (cnow.dcd != cprev.dcd)) ||
+ ((arg & TIOCM_CTS) && (cnow.cts != cprev.cts)) ) {
+ return 0;
+ }
+ cprev = cnow;
+ }
+ /* NOTREACHED */
+
+ /*
+ * Get counter of input serial line interrupts (DCD,RI,DSR,CTS)
+ * Return: write counters to the user passed counter struct
+ * NB: both 1->0 and 0->1 transitions are counted except for
+ * RI where only 0->1 is counted.
+ */
+ case TIOCGICOUNT:
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ cnow = info->icount;
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ p_cuser = (struct serial_icounter_struct *) arg;
+ PUT_USER(error,cnow.cts, &p_cuser->cts);
+ if (error) return error;
+ PUT_USER(error,cnow.dsr, &p_cuser->dsr);
+ if (error) return error;
+ PUT_USER(error,cnow.rng, &p_cuser->rng);
+ if (error) return error;
+ PUT_USER(error,cnow.dcd, &p_cuser->dcd);
+ if (error) return error;
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ PUT_USER(error,cnow.rx, &p_cuser->rx);
+ if (error) return error;
+ PUT_USER(error,cnow.tx, &p_cuser->tx);
+ if (error) return error;
+ PUT_USER(error,cnow.frame, &p_cuser->frame);
+ if (error) return error;
+ PUT_USER(error,cnow.overrun, &p_cuser->overrun);
+ if (error) return error;
+ PUT_USER(error,cnow.parity, &p_cuser->parity);
+ if (error) return error;
+ PUT_USER(error,cnow.brk, &p_cuser->brk);
+ if (error) return error;
+ PUT_USER(error,cnow.buf_overrun, &p_cuser->buf_overrun);
+ if (error) return error;
+#endif
+ return 0;
+
+ default:
+ return -ENOIOCTLCMD;


+ }
+ return 0;
+}
+

+/* mgsl_set_termios()
+ *
+ * Set new termios settings


+ *
+ * Arguments:
+ *

+ * tty pointer to tty structure
+ * termios pointer to buffer to hold returned old termios


+ *
+ * Return Value: None
+ */

+static void mgsl_set_termios(struct tty_struct *tty, struct termios *old_termios)
+{
+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;


+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_set_termios %s\n", __FILE__,__LINE__,
+ tty->driver.name );
+
+ /* just return if nothing has changed */
+ if ((tty->termios->c_cflag == old_termios->c_cflag)
+ && (RELEVANT_IFLAG(tty->termios->c_iflag)
+ == RELEVANT_IFLAG(old_termios->c_iflag)))
+ return;
+
+ mgsl_change_params(info);
+
+ /* Handle transition to B0 status */
+ if (old_termios->c_cflag & CBAUD &&
+ !(tty->termios->c_cflag & CBAUD)) {
+ info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_set_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+
+ /* Handle transition away from B0 status */
+ if (!(old_termios->c_cflag & CBAUD) &&
+ tty->termios->c_cflag & CBAUD) {
+ info->serial_signals |= SerialSignal_DTR;
+ if (!(tty->termios->c_cflag & CRTSCTS) ||
+ !test_bit(TTY_THROTTLED, &tty->flags)) {
+ info->serial_signals |= SerialSignal_RTS;
+ }
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_set_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+
+ /* Handle turning off CRTSCTS */
+ if (old_termios->c_cflag & CRTSCTS &&
+ !(tty->termios->c_cflag & CRTSCTS)) {
+ tty->hw_stopped = 0;
+ mgsl_start(tty);
+ }
+
+} /* end of mgsl_set_termios() */
+
+/* mgsl_close()
+ *
+ * Called when port is closed. Wait for remaining data to be
+ * sent. Disable port and free resources.


+ *
+ * Arguments:
+ *

+ * tty pointer to open tty structure


+ * filp pointer to open file object

+ *
+ * Return Value: None
+ */

+static void mgsl_close(struct tty_struct *tty, struct file * filp)
+{
+ struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+
+ if (!info || mgsl_paranoia_check(info, tty->device, "mgsl_close"))
+ return;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_close(%s) entry, count=%d\n",
+ __FILE__,__LINE__, info->device_name, info->count);
+
+ if (!info->count || tty_hung_up_p(filp))
+ goto cleanup;
+
+ if ((tty->count == 1) && (info->count != 1)) {
+ /*
+ * tty->count is 1 and the tty structure will be freed.
+ * info->count should be one in this case.
+ * if it's not, correct it so that the port is shutdown.
+ */
+ printk("mgsl_close: bad refcount; tty->count is 1, "
+ "info->count is %d\n", info->count);
+ info->count = 1;
+ }
+
+ info->count--;
+
+ /* if at least one open remaining, leave hardware active */
+ if (info->count)
+ goto cleanup;
+
+ info->flags |= ASYNC_CLOSING;
+
+ /* Save the termios structure, since this port may have
+ * separate termios for callout and dialin.
+ */
+ if (info->flags & ASYNC_NORMAL_ACTIVE)
+ info->normal_termios = *tty->termios;
+ if (info->flags & ASYNC_CALLOUT_ACTIVE)
+ info->callout_termios = *tty->termios;
+
+ /* set tty->closing to notify line discipline to
+ * only process XON/XOFF characters. Only the N_TTY
+ * discipline appears to use this (ppp does not).
+ */
+ tty->closing = 1;
+
+ /* wait for transmit data to clear all layers */
+
+ if (info->closing_wait != ASYNC_CLOSING_WAIT_NONE) {
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_close(%s) calling tty_wait_until_sent\n",
+ __FILE__,__LINE__, info->device_name );
+ tty_wait_until_sent(tty, info->closing_wait);
+ }
+
+ if (info->flags & ASYNC_INITIALIZED)
+ mgsl_wait_until_sent(tty, info->timeout);


+
+ if (tty->driver.flush_buffer)
+ tty->driver.flush_buffer(tty);
+
+ if (tty->ldisc.flush_buffer)
+ tty->ldisc.flush_buffer(tty);
+

+ shutdown(info);
+
+ tty->closing = 0;
+ info->tty = 0;
+
+ if (info->blocked_open) {
+ if (info->close_delay) {


+ current->state = TASK_INTERRUPTIBLE;

+ schedule_timeout(info->close_delay);
+ }
+ wake_up_interruptible(&info->open_wait);
+ }
+
+ info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE|
+ ASYNC_CLOSING);
+
+ wake_up_interruptible(&info->close_wait);
+
+cleanup:
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_close(%s) exit, count=%d\n", __FILE__,__LINE__,
+ tty->driver.name, info->count);
+ if(MOD_IN_USE)
+ MOD_DEC_USE_COUNT;
+
+} /* end of mgsl_close() */
+
+/* mgsl_wait_until_sent()
+ *
+ * Wait until the transmitter is empty.


+ *
+ * Arguments:
+ *

+ * tty pointer to tty info structure
+ * timeout time to wait for send completion


+ *
+ * Return Value: None
+ */

+static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout)
+{
+ struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+ unsigned long orig_jiffies, char_time;
+
+ if (!info )
+ return;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_wait_until_sent(%s) entry\n",
+ __FILE__,__LINE__, info->device_name );
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_wait_until_sent"))
+ return;
+
+ if (!(info->flags & ASYNC_INITIALIZED))
+ goto exit;
+
+ orig_jiffies = jiffies;
+
+ /* Set check interval to 1/5 of estimated time to
+ * send a character, and make it at least 1. The check
+ * interval should also be less than the timeout.
+ * Note: use tight timings here to satisfy the NIST-PCTS.
+ */
+
+ if ( info->params.data_rate ) {
+ char_time = info->timeout/(32 * 5);
+ if (!char_time)
+ char_time++;
+ } else
+ char_time = 1;
+
+ if (timeout)
+ char_time = MIN(char_time, timeout);
+
+ if ( info->params.mode == MGSL_MODE_HDLC ) {
+ while (info->tx_active) {


+ current->state = TASK_INTERRUPTIBLE;

+ current->counter = 0; /* make us low-priority */
+ schedule_timeout(char_time);
+ if (signal_pending(current))
+ break;
+ if (timeout && ((orig_jiffies + timeout) < jiffies))
+ break;
+ }
+ } else {
+ while (!(usc_InReg(info,TCSR) & TXSTATUS_ALL_SENT) &&
+ info->tx_enabled) {


+ current->state = TASK_INTERRUPTIBLE;

+ current->counter = 0; /* make us low-priority */
+ schedule_timeout(char_time);
+ if (signal_pending(current))
+ break;
+ if (timeout && ((orig_jiffies + timeout) < jiffies))


+ break;
+ }
+ }
+

+ current->state = TASK_RUNNING;
+exit:
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_wait_until_sent(%s) exit\n",
+ __FILE__,__LINE__, info->device_name );
+
+} /* end of mgsl_wait_until_sent() */
+
+/* mgsl_hangup()
+ *
+ * Called by tty_hangup() when a hangup is signaled.
+ * This is the same as to closing all open files for the port.
+ *
+ * Arguments: tty pointer to associated tty object


+ * Return Value: None
+ */

+static void mgsl_hangup(struct tty_struct *tty)
+{
+ struct mgsl_struct * info = (struct mgsl_struct *)tty->driver_data;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_hangup(%s)\n",
+ __FILE__,__LINE__, info->device_name );
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_hangup"))
+ return;
+
+ mgsl_flush_buffer(tty);
+ shutdown(info);
+
+ info->count = 0;
+ info->flags &= ~(ASYNC_NORMAL_ACTIVE|ASYNC_CALLOUT_ACTIVE);
+ info->tty = 0;
+
+ wake_up_interruptible(&info->open_wait);
+
+} /* end of mgsl_hangup() */
+
+/* block_til_ready()
+ *
+ * Block the current process until the specified port
+ * is ready to be opened.


+ *
+ * Arguments:
+ *

+ * tty pointer to tty info structure


+ * filp pointer to open file object

+ * info pointer to device instance data
+ *

+ * Return Value: 0 if success, otherwise error code
+ */

+static int block_til_ready(struct tty_struct *tty, struct file * filp,
+ struct mgsl_struct *info)
+{


+ struct wait_queue wait = { current, NULL };

+ int retval;
+ int do_clocal = 0, extra_count = 0;


+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):block_til_ready on %s\n",
+ __FILE__,__LINE__, tty->driver.name );
+
+ if (tty->driver.subtype == SERIAL_TYPE_CALLOUT) {
+ /* this is a callout device */
+ /* just verify that normal device is not in use */
+ if (info->flags & ASYNC_NORMAL_ACTIVE)
+ return -EBUSY;
+ if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
+ (info->flags & ASYNC_SESSION_LOCKOUT) &&
+ (info->session != current->session))
+ return -EBUSY;
+ if ((info->flags & ASYNC_CALLOUT_ACTIVE) &&
+ (info->flags & ASYNC_PGRP_LOCKOUT) &&
+ (info->pgrp != current->pgrp))
+ return -EBUSY;
+ info->flags |= ASYNC_CALLOUT_ACTIVE;


+ return 0;
+ }
+

+ if (filp->f_flags & O_NONBLOCK || tty->flags & (1 << TTY_IO_ERROR)){
+ /* nonblock mode is set or port is not enabled */
+ /* just verify that callout device is not active */
+ if (info->flags & ASYNC_CALLOUT_ACTIVE)
+ return -EBUSY;
+ info->flags |= ASYNC_NORMAL_ACTIVE;


+ return 0;
+ }
+

+ if (info->flags & ASYNC_CALLOUT_ACTIVE) {
+ if (info->normal_termios.c_cflag & CLOCAL)
+ do_clocal = 1;
+ } else {
+ if (tty->termios->c_cflag & CLOCAL)
+ do_clocal = 1;
+ }
+
+ /* Wait for carrier detect and the line to become
+ * free (i.e., not in use by the callout). While we are in
+ * this loop, info->count is dropped by one, so that
+ * mgsl_close() knows when to free things. We restore it upon
+ * exit, either normal or abnormal.
+ */
+
+ retval = 0;
+ add_wait_queue(&info->open_wait, &wait);
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):block_til_ready before block on %s count=%d\n",
+ __FILE__,__LINE__, tty->driver.name, info->count );
+
+ save_flags(flags); cli();
+ if (!tty_hung_up_p(filp)) {
+ extra_count = 1;
+ info->count--;
+ }
+ restore_flags(flags);
+ info->blocked_open++;
+
+ while (1) {
+ if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
+ (tty->termios->c_cflag & CBAUD)) {
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ usc_set_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+
+ current->state = TASK_INTERRUPTIBLE;
+
+ if (tty_hung_up_p(filp) || !(info->flags & ASYNC_INITIALIZED)){
+ retval = (info->flags & ASYNC_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS;
+ break;
+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_get_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ if (!(info->flags & ASYNC_CALLOUT_ACTIVE) &&
+ !(info->flags & ASYNC_CLOSING) &&
+ (do_clocal || (info->serial_signals & SerialSignal_DCD)) ) {


+ break;
+ }
+
+ if (signal_pending(current)) {

+ retval = -ERESTARTSYS;
+ break;
+ }
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):block_til_ready blocking on %s count=%d\n",
+ __FILE__,__LINE__, tty->driver.name, info->count );
+
+ schedule();
+ }


+
+ current->state = TASK_RUNNING;

+ remove_wait_queue(&info->open_wait, &wait);
+
+ if (extra_count)
+ info->count++;
+ info->blocked_open--;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):block_til_ready after blocking on %s count=%d\n",
+ __FILE__,__LINE__, tty->driver.name, info->count );
+
+ if (!retval)
+ info->flags |= ASYNC_NORMAL_ACTIVE;
+
+ return retval;
+
+} /* end of block_til_ready() */
+
+/* mgsl_open()
+ *
+ * Called when a port is opened. Init and enable port.
+ * Perform serial-specific initialization for the tty structure.


+ *
+ * Arguments: tty pointer to tty info structure

+ * filp associated file pointer
+ *


+ * Return Value: 0 if success, otherwise error code
+ */

+static int mgsl_open(struct tty_struct *tty, struct file * filp)
+{
+ struct mgsl_struct *info;
+ int retval, line;
+ unsigned long page;
+
+ /* verify range of specified line number */
+ line = MINOR(tty->device) - tty->driver.minor_start;
+ if ((line < 0) || (line >= mgsl_device_count)) {
+ printk("%s(%d):mgsl_open with illegal line #%d.\n",
+ __FILE__,__LINE__,line);
+ return -ENODEV;
+ }
+
+ /* find the info structure for the specified line */
+ info = mgsl_device_list;
+ while(info && info->line != line)
+ info = info->next_device;
+ if ( !info ){
+ printk("%s(%d):Can't find specified device on open (line=%d)\n",
+ __FILE__,__LINE__,line);
+ return -ENODEV;
+ }
+
+ tty->driver_data = info;
+ info->tty = tty;
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_open"))
+ return -ENODEV;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_open(%s), old ref count = %d\n",
+ __FILE__,__LINE__,tty->driver.name, info->count);
+
+ MOD_INC_USE_COUNT;
+
+ /* If port is closing, signal caller to try again */
+ if (tty_hung_up_p(filp) || info->flags & ASYNC_CLOSING){
+ if (info->flags & ASYNC_CLOSING)
+ interruptible_sleep_on(&info->close_wait);
+ retval = ((info->flags & ASYNC_HUP_NOTIFY) ?
+ -EAGAIN : -ERESTARTSYS);
+ goto cleanup;
+ }
+
+ if (!tmp_buf) {
+ page = get_free_page(GFP_KERNEL);
+ if (!page) {
+ retval = -ENOMEM;
+ goto cleanup;
+ }
+ if (tmp_buf)
+ free_page(page);
+ else
+ tmp_buf = (unsigned char *) page;
+ }


+
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)

+ info->tty->low_latency = (info->flags & ASYNC_LOW_LATENCY) ? 1 : 0;
+#endif
+
+ info->count++;
+ if (info->count == 1) {
+ /* 1st open on this device, init hardware */
+ retval = startup(info);
+ if (retval < 0)
+ goto cleanup;
+ }
+
+ retval = block_til_ready(tty, filp, info);
+ if (retval) {
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):block_til_ready(%s) returned %d\n",
+ __FILE__,__LINE__, info->device_name, retval);
+ goto cleanup;
+ }
+
+ if ((info->count == 1) &&
+ info->flags & ASYNC_SPLIT_TERMIOS) {
+ if (tty->driver.subtype == SERIAL_TYPE_NORMAL)
+ *tty->termios = info->normal_termios;
+ else
+ *tty->termios = info->callout_termios;
+ mgsl_change_params(info);
+ }
+
+ info->session = current->session;
+ info->pgrp = current->pgrp;
+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_open(%s) success\n",
+ __FILE__,__LINE__, info->device_name);
+ retval = 0;
+
+cleanup:
+ if (retval) {
+ if(MOD_IN_USE)
+ MOD_DEC_USE_COUNT;
+ if(info->count)
+ info->count--;
+ }
+
+ return retval;
+
+} /* end of mgsl_open() */
+
+/*
+ * /proc fs routines....
+ */
+
+static inline int line_info(char *buf, struct mgsl_struct *info)
+{
+ char stat_buf[30];
+ int ret;


+ unsigned long flags;
+

+ if (info->bus_type == MGSL_BUS_TYPE_PCI) {
+ ret = sprintf(buf, "%s:PCI io:%04X irq:%d mem:%08X lcr:%08X",
+ info->device_name, info->io_base, info->irq_level,
+ info->phys_memory_base, info->phys_lcr_base);
+ } else {
+ ret = sprintf(buf, "%s:(E)ISA io:%04X irq:%d dma:%d",
+ info->device_name, info->io_base,
+ info->irq_level, info->dma_level);
+ }
+
+ /* output current serial signal states */
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_get_serial_signals(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ stat_buf[0] = 0;
+ stat_buf[1] = 0;
+ if (info->serial_signals & SerialSignal_RTS)
+ strcat(stat_buf, "|RTS");
+ if (info->serial_signals & SerialSignal_CTS)
+ strcat(stat_buf, "|CTS");
+ if (info->serial_signals & SerialSignal_DTR)
+ strcat(stat_buf, "|DTR");
+ if (info->serial_signals & SerialSignal_DSR)
+ strcat(stat_buf, "|DSR");
+ if (info->serial_signals & SerialSignal_DCD)
+ strcat(stat_buf, "|CD");
+ if (info->serial_signals & SerialSignal_RI)
+ strcat(stat_buf, "|RI");
+
+ if (info->params.mode == MGSL_MODE_HDLC) {
+ ret += sprintf(buf+ret, " HDLC txok:%d rxok:%d",
+ info->icount.txok, info->icount.rxok);
+ if (info->icount.txunder)
+ ret += sprintf(buf+ret, " txunder:%d", info->icount.txunder);
+ if (info->icount.txabort)
+ ret += sprintf(buf+ret, " txabort:%d", info->icount.txabort);
+ if (info->icount.rxshort)
+ ret += sprintf(buf+ret, " rxshort:%d", info->icount.rxshort);
+ if (info->icount.rxlong)
+ ret += sprintf(buf+ret, " rxlong:%d", info->icount.rxlong);
+ if (info->icount.rxover)
+ ret += sprintf(buf+ret, " rxover:%d", info->icount.rxover);
+ if (info->icount.rxcrc)
+ ret += sprintf(buf+ret, " rxlong:%d", info->icount.rxcrc);
+ } else {
+ ret += sprintf(buf+ret, " ASYNC tx:%d rx:%d",
+ info->icount.tx, info->icount.rx);
+ if (info->icount.frame)
+ ret += sprintf(buf+ret, " fe:%d", info->icount.frame);
+ if (info->icount.parity)
+ ret += sprintf(buf+ret, " pe:%d", info->icount.parity);
+ if (info->icount.brk)
+ ret += sprintf(buf+ret, " brk:%d", info->icount.brk);
+ if (info->icount.overrun)
+ ret += sprintf(buf+ret, " oe:%d", info->icount.overrun);
+ }
+
+ /* Append serial signal status to end */
+ ret += sprintf(buf+ret, " %s\n", stat_buf+1);
+
+ ret += sprintf(buf+ret, "txactive=%d bh_req=%d bh_run=%d bh_q=%p\n",
+ info->tx_active,info->bh_requested,info->bh_running,
+ info->bh_queue_head);
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ {
+ u16 Tscr = usc_InReg( info, TCSR );
+ u16 Tdmr = usc_InDmaReg( info, TDMR );
+ u16 Ticr = usc_InReg( info, TICR );
+ u16 Rscr = usc_InReg( info, RCSR );
+ u16 Rdmr = usc_InDmaReg( info, RDMR );
+ u16 Ricr = usc_InReg( info, RICR );
+ u16 Icr = usc_InReg( info, ICR );
+ u16 Dccr = usc_InReg( info, DCCR );
+ u16 Tmr = usc_InReg( info, TMR );
+ u16 Tccr = usc_InReg( info, TCCR );
+ u16 Ccar = inw( info->io_base + CCAR );
+ ret += sprintf(buf+ret, "tcsr=%04X tdmr=%04X ticr=%04X rcsr=%04X rdmr=%04X\n"
+ "ricr=%04X icr =%04X dccr=%04X tmr=%04X tccr=%04X ccar=%04X\n",
+ Tscr,Tdmr,Ticr,Rscr,Rdmr,Ricr,Icr,Dccr,Tmr,Tccr,Ccar );
+ }
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+#if 0 && LINUX_VERSION_CODE >= VERSION(2,1,0)
+ ret += sprintf(buf+ret, "irq_spinlock=%08X\n",
+ info->irq_spinlock.lock );
+#endif


+
+ return ret;
+

+} /* end of line_info() */
+
+/* mgsl_read_proc()
+ *
+ * Called to print information about devices


+ *
+ * Arguments:

+ * page page of memory to hold returned info
+ * start
+ * off
+ * count
+ * eof
+ * data


+ *
+ * Return Value:

+ */
+int mgsl_read_proc(char *page, char **start, off_t off, int count,
+ int *eof, void *data)
+{
+ int len = 0, l;
+ off_t begin = 0;
+ struct mgsl_struct *info;
+
+ len += sprintf(page, "synclink driver:%s\n", driver_version);
+
+ info = mgsl_device_list;
+ while( info ) {
+ l = line_info(page + len, info);
+ len += l;
+ if (len+begin > off+count)
+ goto done;
+ if (len+begin < off) {
+ begin += len;
+ len = 0;
+ }
+ info = info->next_device;
+ }
+
+ *eof = 1;
+done:
+ if (off >= len+begin)
+ return 0;
+ *start = page + (begin-off);
+ return ((count < begin+len-off) ? count : begin+len-off);
+
+} /* end of mgsl_read_proc() */
+
+/* mgsl_allocate_dma_buffers()
+ *
+ * Allocate and format DMA buffers (ISA adapter)
+ * or format shared memory buffers (PCI adapter).
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: 0 if success, otherwise error

+ */
+int mgsl_allocate_dma_buffers(struct mgsl_struct *info)
+{
+ unsigned short BuffersPerFrame;
+
+ info->last_mem_alloc = 0;
+
+ if ( info->bus_type == MGSL_BUS_TYPE_PCI ) {
+ /*
+ * The PCI adapter has 256KBytes of shared memory to use.
+ * This is 64 PAGE_SIZE buffers. 1 is used for the buffer
+ * list. 2 are used for the transmit and one is left as
+ * a spare. The 4K buffer list can hold 128 DMA_BUFFER
+ * structures at 32bytes each.
+ */
+
+ info->rx_buffer_count = 60;
+ info->tx_buffer_count = 2;
+ } else {
+ /* Calculate the number of PAGE_SIZE buffers needed for */
+ /* receive and transmit DMA buffers. */
+
+ /* Calculate the number of DMA buffers necessary to hold the */
+ /* largest allowable frame size. Note: If the max frame size is */
+ /* not an even multiple of the DMA buffer size then we need to */
+ /* round the buffer count per frame up one. */
+
+ BuffersPerFrame = (unsigned short)(info->max_frame_size/DMABUFFERSIZE);
+ if ( info->max_frame_size % DMABUFFERSIZE )
+ BuffersPerFrame++;
+
+ /* Calculate the number of DMA buffers necessary to */
+ /* hold 7 max size receive frames and one max size transmit frame. */
+ /* The receive buffer count is bumped by one so we avoid an */
+ /* End of List condition if all receive buffers are used when */
+ /* using linked list DMA buffers. */
+
+ info->rx_buffer_count = (BuffersPerFrame * MAXRXFRAMES) + 6;
+ info->tx_buffer_count = BuffersPerFrame;
+ }
+
+ if ( debug_level >= DEBUG_LEVEL_INFO )
+ printk("%s(%d):Allocating %d TX and %d RX DMA buffers.\n",
+ __FILE__,__LINE__, info->tx_buffer_count,info->rx_buffer_count);
+
+ if ( mgsl_alloc_buffer_list_memory( info ) < 0 ||
+ mgsl_alloc_frame_memory(info, info->rx_buffer_list, info->rx_buffer_count) < 0 ||
+ mgsl_alloc_frame_memory(info, info->tx_buffer_list, info->tx_buffer_count) < 0) {
+ printk("%s(%d):Can't allocate DMA buffer memory\n",__FILE__,__LINE__);
+ return -ENOMEM;
+ }
+
+ mgsl_reset_rx_dma_buffers( info );


+
+ return 0;
+

+} /* end of mgsl_allocate_dma_buffers() */
+
+/*
+ * mgsl_alloc_buffer_list_memory()
+ *
+ * Allocate a common DMA buffer for use as the
+ * receive and transmit buffer lists.
+ *
+ * A buffer list is a set of buffer entries where each entry contains
+ * a pointer to an actual buffer and a pointer to the next buffer entry
+ * (plus some other info about the buffer).
+ *
+ * The buffer entries for a list are built to form a circular list so
+ * that when the entire list has been traversed you start back at the
+ * beginning.
+ *
+ * This function allocates memory for just the buffer entries.
+ * The links (pointer to next entry) are filled in with the physical
+ * address of the next entry so the adapter can navigate the list
+ * using bus master DMA. The pointers to the actual buffers are filled
+ * out later when the actual buffers are allocated.
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: 0 if success, otherwise error

+ */
+int mgsl_alloc_buffer_list_memory( struct mgsl_struct *info )
+{
+ unsigned int i;
+
+ if ( info->bus_type == MGSL_BUS_TYPE_PCI ) {
+ /* PCI adapter uses shared memory. */
+ info->buffer_list = info->memory_base + info->last_mem_alloc;
+ info->buffer_list_phys = info->last_mem_alloc;
+ info->last_mem_alloc += BUFFERLISTSIZE;
+ } else {
+ /* ISA adapter uses system memory. */
+ /* The buffer lists are allocated as a common buffer that both */
+ /* the processor and adapter can access. This allows the driver to */
+ /* inspect portions of the buffer while other portions are being */
+ /* updated by the adapter using Bus Master DMA. */
+
+ info->buffer_list = kmalloc(BUFFERLISTSIZE, GFP_KERNEL | GFP_DMA);
+ if ( info->buffer_list == NULL )
+ return -ENOMEM;
+
+ info->buffer_list_phys = virt_to_bus(info->buffer_list);
+ }
+
+ /* We got the memory for the buffer entry lists. */
+ /* Initialize the memory block to all zeros. */
+ memset( info->buffer_list, 0, BUFFERLISTSIZE );
+
+ /* Save virtual address pointers to the receive and */
+ /* transmit buffer lists. (Receive 1st). These pointers will */
+ /* be used by the processor to access the lists. */
+ info->rx_buffer_list = (DMABUFFERENTRY *)info->buffer_list;
+ info->tx_buffer_list = (DMABUFFERENTRY *)info->buffer_list;
+ info->tx_buffer_list += info->rx_buffer_count;
+
+ /*
+ * Build the links for the buffer entry lists such that
+ * two circular lists are built. (Transmit and Receive).
+ *
+ * Note: the links are physical addresses
+ * which are read by the adapter to determine the next
+ * buffer entry to use.
+ */
+
+ for ( i = 0; i < info->rx_buffer_count; i++ ) {
+ /* calculate and store physical address of this buffer entry */
+ info->rx_buffer_list[i].phys_entry =
+ info->buffer_list_phys + (i * sizeof(DMABUFFERENTRY));
+
+ /* calculate and store physical address of */
+ /* next entry in cirular list of entries */
+
+ info->rx_buffer_list[i].link = info->buffer_list_phys;
+
+ if ( i < info->rx_buffer_count - 1 )
+ info->rx_buffer_list[i].link += (i + 1) * sizeof(DMABUFFERENTRY);
+ }
+
+ for ( i = 0; i < info->tx_buffer_count; i++ ) {
+ /* calculate and store physical address of this buffer entry */
+ info->tx_buffer_list[i].phys_entry = info->buffer_list_phys +
+ ((info->rx_buffer_count + i) * sizeof(DMABUFFERENTRY));
+
+ /* calculate and store physical address of */
+ /* next entry in cirular list of entries */
+
+ info->tx_buffer_list[i].link = info->buffer_list_phys +
+ info->rx_buffer_count * sizeof(DMABUFFERENTRY);
+
+ if ( i < info->tx_buffer_count - 1 )
+ info->tx_buffer_list[i].link += (i + 1) * sizeof(DMABUFFERENTRY);
+ }


+
+ return 0;
+

+} /* end of mgsl_alloc_buffer_list_memory() */
+
+/*
+ * mgsl_free_buffer_list_memory()
+ *
+ * Free the common DMA buffer allocated for use as the
+ * receive and transmit buffer lists. The associated Memory
+ * Descriptor List (MDL) is also freed.
+ *
+ * Warning:
+ *
+ * The data transfer buffers associated with the buffer list
+ * MUST be freed before freeing the buffer list itself because
+ * the buffer list contains the information necessary to free
+ * the individual buffers!
+ *
+ * Arguments: info pointer to device extension


+ * Return Value: None
+ */

+void mgsl_free_buffer_list_memory( struct mgsl_struct *info )
+{
+ if ( info->buffer_list && info->bus_type != MGSL_BUS_TYPE_PCI )
+ kfree_s(info->buffer_list, BUFFERLISTSIZE);
+
+ info->buffer_list = NULL;
+ info->rx_buffer_list = NULL;
+ info->tx_buffer_list = NULL;
+
+} /* end of mgsl_free_buffer_list_memory() */
+
+/*
+ * mgsl_alloc_frame_memory()
+ *
+ * Allocate the frame DMA buffers used by the specified buffer list.
+ * Each DMA buffer will be one memory page in size. This is necessary
+ * because memory can fragment enough that it may be impossible
+ * contiguous pages.


+ *
+ * Arguments:
+ *

+ * info pointer to device instance data
+ * BufferList pointer to list of buffer entries
+ * Buffercount count of buffer entries in buffer list
+ *
+ * Return Value: 0 if success, otherwise -ENOMEM
+ */
+int mgsl_alloc_frame_memory(struct mgsl_struct *info,DMABUFFERENTRY *BufferList,int Buffercount)
+{
+ int i;
+ unsigned long phys_addr;
+
+ /* Allocate page sized buffers for the receive buffer list */
+
+ for ( i = 0; i < Buffercount; i++ ) {
+ if ( info->bus_type == MGSL_BUS_TYPE_PCI ) {
+ /* PCI adapter uses shared memory buffers. */
+ BufferList[i].virt_addr = info->memory_base + info->last_mem_alloc;
+ phys_addr = info->last_mem_alloc;
+ info->last_mem_alloc += DMABUFFERSIZE;
+ } else {
+ /* ISA adapter uses system memory. */
+ BufferList[i].virt_addr =
+ kmalloc(DMABUFFERSIZE, GFP_KERNEL | GFP_DMA);
+ if ( BufferList[i].virt_addr == NULL )
+ return -ENOMEM;
+ phys_addr = virt_to_bus(BufferList[i].virt_addr);
+ }
+ BufferList[i].phys_addr = phys_addr;
+ }


+
+ return 0;
+

+} /* end of mgsl_alloc_frame_memory() */
+
+/*
+ * mgsl_free_frame_memory()
+ *
+ * Free the buffers associated with
+ * each buffer entry of a buffer list.


+ *
+ * Arguments:
+ *

+ * info pointer to device instance data
+ * BufferList pointer to list of buffer entries
+ * Buffercount count of buffer entries in buffer list
+ *
+ * Return Value: None
+ */
+void mgsl_free_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *BufferList, int Buffercount)


+{
+ int i;
+

+ if ( BufferList ) {
+ for ( i = 0 ; i < Buffercount ; i++ ) {
+ if ( BufferList[i].virt_addr ) {
+ if ( info->bus_type != MGSL_BUS_TYPE_PCI )
+ kfree_s(BufferList[i].virt_addr, DMABUFFERSIZE);
+ BufferList[i].virt_addr = NULL;
+ }
+ }
+ }
+
+} /* end of mgsl_free_frame_memory() */
+
+/* mgsl_free_dma_buffers()
+ *
+ * Free DMA buffers
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_free_dma_buffers( struct mgsl_struct *info )
+{
+ mgsl_free_frame_memory( info, info->rx_buffer_list, info->rx_buffer_count );
+ mgsl_free_frame_memory( info, info->tx_buffer_list, info->tx_buffer_count );
+ mgsl_free_buffer_list_memory( info );
+
+} /* end of mgsl_free_dma_buffers() */
+
+/* mgsl_claim_resources()
+ *
+ * Claim all resources used by a device
+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: 0 if success, otherwise -ENODEV
+ */
+int mgsl_claim_resources(struct mgsl_struct *info)
+{
+ /* claim 16C32 I/O base address */
+
+ if ( check_region(info->io_base,info->io_addr_size) < 0 ) {
+ printk( "%s(%d):I/O address conflict on device %s Addr=%08X\n",
+ __FILE__,__LINE__,info->device_name, info->io_base );
+ return -ENODEV;
+ }
+ request_region(info->io_base,info->io_addr_size,"synclink.o");
+ info->io_addr_requested = 1;
+
+ /* claim interrupt level */
+
+ if ( request_irq(info->irq_level,mgsl_interrupt,info->irq_flags,
+ info->device_name, info ) < 0 ) {
+ printk( "%s(%d):Cant request interrupt on device %s IRQ=%d\n",
+ __FILE__,__LINE__,info->device_name, info->irq_level );
+ mgsl_release_resources( info );
+ return -ENODEV;
+ }
+ info->irq_requested = 1;
+
+ if ( info->bus_type == MGSL_BUS_TYPE_PCI ) {
+ /* claim shared memory range */
+ info->memory_base = ioremap(info->phys_memory_base,0x40000);
+ if (!info->memory_base) {
+ printk( "%s(%d):Cant map shared memory on device %s MemAddr=%08X\n",
+ __FILE__,__LINE__,info->device_name, info->phys_memory_base );
+ mgsl_release_resources( info );
+ return -ENODEV;
+ }
+
+ /* test the shared memory range */
+ if ( !mgsl_memory_test(info) ) {
+ printk( "%s(%d):Failed shared memory test %s MemAddr=%08X\n",
+ __FILE__,__LINE__,info->device_name, info->phys_memory_base );
+ mgsl_release_resources( info );
+ return -ENODEV;
+ }
+
+ /* claim LCR memory range */
+ info->lcr_base = ioremap(info->phys_lcr_base,PAGE_SIZE) + info->lcr_offset;
+ if (!info->lcr_base) {
+ printk( "%s(%d):Cant map LCR memory on device %s MemAddr=%08X\n",
+ __FILE__,__LINE__,info->device_name, info->phys_lcr_base );
+ mgsl_release_resources( info );
+ return -ENODEV;
+ }
+
+ } else {
+ /* claim DMA channel */
+
+ if (request_dma(info->dma_level,info->device_name) < 0){
+ printk( "%s(%d):Cant request DMA channel on device %s DMA=%d\n",
+ __FILE__,__LINE__,info->device_name, info->dma_level );
+ mgsl_release_resources( info );
+ return -ENODEV;
+ }
+ info->dma_requested = 1;
+
+ /* ISA adapter uses bus master DMA */
+ set_dma_mode(info->dma_level,DMA_MODE_CASCADE);
+ enable_dma(info->dma_level);
+ }
+
+ if ( mgsl_allocate_dma_buffers(info) < 0 ) {
+ printk( "%s(%d):Cant allocate DMA buffers on device %s DMA=%d\n",
+ __FILE__,__LINE__,info->device_name, info->dma_level );
+ mgsl_release_resources( info );
+ return -ENODEV;
+ }

+
+ return 0;
+

+} /* end of mgsl_claim_resources() */
+
+/* mgsl_release_resources()
+ *
+ * Release all resources used by a device
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_release_resources(struct mgsl_struct *info)
+{
+ if ( debug_level >= DEBUG_LEVEL_INFO )
+ printk( "%s(%d):mgsl_release_resources(%s) entry\n",
+ __FILE__,__LINE__,info->device_name );
+
+ if ( info->irq_requested ) {
+ free_irq(info->irq_level, info);
+ info->irq_requested = 0;
+ }
+
+ if ( info->dma_requested ) {
+ disable_dma(info->dma_level);
+ free_dma(info->dma_level);
+ info->dma_requested = 0;
+ }
+ mgsl_free_dma_buffers(info);
+
+ if ( info->io_addr_requested ) {
+ release_region(info->io_base,info->io_addr_size);
+ info->io_addr_requested = 0;
+ }
+
+ if (info->memory_base){
+ iounmap(info->memory_base);
+ info->memory_base = 0;
+ }
+
+ if (info->lcr_base){
+ iounmap(info->lcr_base - info->lcr_offset);
+ info->lcr_base = 0;
+ }
+
+ if ( debug_level >= DEBUG_LEVEL_INFO )
+ printk( "%s(%d):mgsl_release_resources(%s) exit\n",
+ __FILE__,__LINE__,info->device_name );
+
+} /* end of mgsl_release_resources() */
+
+/* mgsl_add_device()
+ *
+ * Add the specified device instance data structure to the
+ * global linked list of devices and increment the device count.
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_add_device( struct mgsl_struct *info )
+{
+ info->next_device = NULL;
+ info->line = mgsl_device_count;
+ sprintf(info->device_name,"ttySL%d",info->line);
+
+ mgsl_device_count++;
+
+ if ( !mgsl_device_list )
+ mgsl_device_list = info;
+ else {
+ struct mgsl_struct *current_dev = mgsl_device_list;
+ while( current_dev->next_device )
+ current_dev = current_dev->next_device;
+ current_dev->next_device = info;
+ }
+
+ if ( info->bus_type == MGSL_BUS_TYPE_PCI ) {
+ printk( "SyncLink device %s added:PCI bus IO=%04X IRQ=%d Mem=%08X LCR=%08X\n",
+ info->device_name, info->io_base, info->irq_level,
+ info->phys_memory_base, info->phys_lcr_base );
+ } else {
+ printk( "SyncLink device %s added:ISA bus IO=%04X IRQ=%d DMA=%d\n",
+ info->device_name, info->io_base, info->irq_level, info->dma_level );
+ }
+
+} /* end of mgsl_add_device() */
+
+/* mgsl_allocate_device()
+ *
+ * Allocate and initialize a device instance structure


+ *
+ * Arguments: None

+ * Return Value: pointer to mgsl_struct if success, otherwise NULL
+ */
+struct mgsl_struct* mgsl_allocate_device()
+{
+ struct mgsl_struct *info;
+
+ info = (struct mgsl_struct *)kmalloc(sizeof(struct mgsl_struct),
+ GFP_KERNEL);
+
+ if (!info) {
+ printk("Error can't allocate device instance data\n");
+ } else {
+ memset(info, 0, sizeof(struct mgsl_struct));
+ info->magic = MGSL_MAGIC;
+ info->task.sync = 0;
+ info->task.routine = mgsl_bh_handler;
+ info->task.data = info;
+ info->max_frame_size = 4096;
+ info->close_delay = 5*HZ/10;
+ info->closing_wait = 30*HZ;
+
+ memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS));
+ info->idle_mode = HDLC_TXIDLE_FLAGS;
+ }
+
+ return info;
+
+} /* end of mgsl_allocate_device()*/
+
+/* mgsl_enumerate_devices()
+ *
+ * Enumerate SyncLink serial devices based on user specified
+ * options for ISA adapters and autodetected PCI adapters.
+ *

+ * Arguments: None
+ * Return Value: 0 if success, otherwise error code
+ */

+int mgsl_enumerate_devices()
+{
+ struct mgsl_struct *info;
+ int i;
+
+ /* Check for user specified ISA devices */
+
+ for (i=0 ;(i < MAX_ISA_DEVICES) && io[i] && irq[i]; i++){
+ if ( debug_level >= DEBUG_LEVEL_INFO )
+ printk("ISA device specified io=%04X,irq=%d,dma=%d\n",
+ io[i], irq[i], dma[i] );
+
+ info = mgsl_allocate_device();
+ if ( !info ) {
+ /* error allocating device instance data */
+ if ( debug_level >= DEBUG_LEVEL_ERROR )
+ printk( "can't allocate device instance data.\n");
+ continue;
+ }
+
+ /* Copy user configuration info to device instance data */
+ info->io_base = (unsigned int)io[i];
+ info->irq_level = (unsigned int)irq[i];
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ info->irq_level = irq_cannonicalize(info->irq_level);
+#else
+ if (info->irq_level == 2)
+ info->irq_level = 9;
+#endif
+ info->dma_level = (unsigned int)dma[i];
+ info->bus_type = MGSL_BUS_TYPE_ISA;
+ info->io_addr_size = 16;
+ info->irq_flags = 0;
+
+ /* add new device to device list */
+ mgsl_add_device( info );
+ }
+
+
+#ifdef CONFIG_PCI
+ /* Auto detect PCI adapters */
+
+ if ( pcibios_present() ) {
+ unsigned char bus;
+ unsigned char func;
+ unsigned int shared_mem_base;
+ unsigned int lcr_mem_base;
+ unsigned int io_base;
+ unsigned char irq_line;
+
+ for(i=0;;i++){
+ if ( PCIBIOS_SUCCESSFUL == pcibios_find_device(
+ MICROGATE_VENDOR_ID, SYNCLINK_DEVICE_ID, i, &bus, &func) ) {
+
+ if (pcibios_read_config_dword(bus,func,
+ PCI_BASE_ADDRESS_3,&shared_mem_base) ) {
+ printk( "%s(%d):Shared mem addr not set.\n",
+ __FILE__,__LINE__);
+ continue;
+ }
+
+ if (pcibios_read_config_dword(bus,func,
+ PCI_BASE_ADDRESS_0,&lcr_mem_base) ) {
+ printk( "%s(%d):LCR mem addr not set.\n",
+ __FILE__,__LINE__);
+ continue;
+ }
+
+ if (pcibios_read_config_dword(bus,func,
+ PCI_BASE_ADDRESS_2,&io_base) ) {
+ printk( "%s(%d):USC I/O addr not set.\n",
+ __FILE__,__LINE__);
+ continue;
+ }
+
+ if (pcibios_read_config_byte(bus,func,
+ PCI_INTERRUPT_LINE,&irq_line) ) {
+ printk( "%s(%d):USC I/O addr not set.\n",
+ __FILE__,__LINE__);
+ continue;
+ }
+
+ info = mgsl_allocate_device();
+ if ( !info ) {
+ /* error allocating device instance data */
+ if ( debug_level >= DEBUG_LEVEL_ERROR )
+ printk( "can't allocate device instance data.\n");
+ continue;
+ }
+
+ /* Copy user configuration info to device instance data */
+
+ info->io_base = io_base & PCI_BASE_ADDRESS_IO_MASK;
+ info->irq_level = (unsigned int)irq_line;
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ info->irq_level = irq_cannonicalize(info->irq_level);
+#else
+ if (info->irq_level == 2)
+ info->irq_level = 9;
+#endif
+ info->phys_memory_base = shared_mem_base & PCI_BASE_ADDRESS_MEM_MASK;
+
+ /* Because veremap only works on page boundaries we must map
+ * a larger area than is actually implemented for the LCR
+ * memory range. We map a full page starting at the page boundary.
+ */
+ info->phys_lcr_base = lcr_mem_base & PCI_BASE_ADDRESS_MEM_MASK;
+ info->lcr_offset = info->phys_lcr_base & (PAGE_SIZE-1);
+ info->phys_lcr_base &= ~(PAGE_SIZE-1);
+
+ info->bus_type = MGSL_BUS_TYPE_PCI;
+ info->io_addr_size = 8;
+ info->irq_flags = SA_SHIRQ;
+ info->bus = bus;
+ info->function = func;
+
+ /* Store the PCI9050 misc control register value because a flaw
+ * in the PCI9050 prevents LCR registers from being read if
+ * BIOS assigns an LCR base address with bit 7 set.
+ *
+ * Only the misc control register is accessed for which only
+ * write access is needed, so set an initial value and change
+ * bits to the device instance data as we write the value
+ * to the actual misc control register.
+ */
+ info->misc_ctrl_value = 0x087e4546;
+
+ /* add new device to device list */
+ mgsl_add_device( info );


+ } else {
+ break;
+ }
+ }
+ }

+#endif
+
+ /*
+ * Allocate memory to hold the following tty/termios arrays


SHAR_EOF
true || echo 'restore of patch-2.2.5 failed'
fi

echo 'End of part 4'
echo 'File patch-2.2.5 is continued in part 5'
echo 5 > _shar_seq_.tmp
exit 0

Thomas...@ciw.uni-karlsruhe.de

unread,
Apr 5, 1999, 3:00:00 AM4/5/99
to
Archive-name: v2.2/patch-2.2.5/part5

#!/bin/sh
# this is part 5 of a 8 - part archive


# do not concatenate these parts, unpack them in order with /bin/sh
# file patch-2.2.5 continued
if test ! -r _shar_seq_.tmp; then
echo 'Please unpack part 1 first!'
exit 1
fi
(read Scheck

if test "$Scheck" != 5; then


echo Please unpack part "$Scheck" next!
exit 1
else
exit 0
fi
) < _shar_seq_.tmp || exit 1
if test ! -f _shar_wnt_.tmp; then
echo 'x - still skipping patch-2.2.5'
else
echo 'x - continuing with patch-2.2.5'
sed 's/^X//' << 'SHAR_EOF' >> 'patch-2.2.5' &&

+ * with an element for each enumerated device.
+ */
+
+ serial_table = (struct tty_struct**)kmalloc(sizeof(struct tty_struct*)*mgsl_device_count, GFP_KERNEL);
+ serial_termios = (struct termios**)kmalloc(sizeof(struct termios*)*mgsl_device_count, GFP_KERNEL);
+ serial_termios_locked = (struct termios**)kmalloc(sizeof(struct termios*)*mgsl_device_count, GFP_KERNEL);
+
+ if (!serial_table || !serial_termios || !serial_termios_locked){
+ printk("%s(%d):Can't allocate tty/termios arrays.\n",
+ __FILE__,__LINE__);


+ return -ENOMEM;
+ }
+

+ memset(serial_table,0,sizeof(struct tty_struct*)*mgsl_device_count);
+ memset(serial_termios,0,sizeof(struct termios*)*mgsl_device_count);
+ memset(serial_termios_locked,0,sizeof(struct termios*)*mgsl_device_count);


+
+ return 0;
+

+} /* end of mgsl_enumerate_devices() */
+
+/* mgsl_init()
+ *
+ * Driver initialization entry point.


+ *
+ * Arguments: None
+ * Return Value: 0 if success, otherwise error code
+ */

+int __init mgsl_init(void)


+{
+ struct mgsl_struct *info;
+

+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ EXPORT_NO_SYMBOLS;
+#else
+ register_symtab(NULL);
+#endif
+
+ printk("%s version %s\n", driver_name, driver_version);
+
+ /* determine how many SyncLink devices are installed */
+ mgsl_enumerate_devices();


+ if ( !mgsl_device_list ) {

+ printk("%s(%d):No SyncLink devices found.\n",__FILE__,__LINE__);


+ return -ENODEV;
+ }
+

+ /* Initialize the tty_driver structure */
+
+ memset(&serial_driver, 0, sizeof(struct tty_driver));
+ serial_driver.magic = TTY_DRIVER_MAGIC;
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ serial_driver.driver_name = "synclink";
+#endif
+ serial_driver.name = "ttySL";
+ serial_driver.major = ttymajor;
+ serial_driver.minor_start = 64;
+ serial_driver.num = mgsl_device_count;
+ serial_driver.type = TTY_DRIVER_TYPE_SERIAL;
+ serial_driver.subtype = SERIAL_TYPE_NORMAL;
+ serial_driver.init_termios = tty_std_termios;
+ serial_driver.init_termios.c_cflag =
+ B9600 | CS8 | CREAD | HUPCL | CLOCAL;
+ serial_driver.flags = TTY_DRIVER_REAL_RAW;
+ serial_driver.refcount = &serial_refcount;
+ serial_driver.table = serial_table;
+ serial_driver.termios = serial_termios;
+ serial_driver.termios_locked = serial_termios_locked;
+
+ serial_driver.open = mgsl_open;
+ serial_driver.close = mgsl_close;
+ serial_driver.write = mgsl_write;
+ serial_driver.put_char = mgsl_put_char;
+ serial_driver.flush_chars = mgsl_flush_chars;
+ serial_driver.write_room = mgsl_write_room;
+ serial_driver.chars_in_buffer = mgsl_chars_in_buffer;
+ serial_driver.flush_buffer = mgsl_flush_buffer;
+ serial_driver.ioctl = mgsl_ioctl;
+ serial_driver.throttle = mgsl_throttle;
+ serial_driver.unthrottle = mgsl_unthrottle;
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ serial_driver.send_xchar = mgsl_send_xchar;
+ serial_driver.break_ctl = mgsl_break;
+ serial_driver.wait_until_sent = mgsl_wait_until_sent;
+ serial_driver.read_proc = mgsl_read_proc;
+#endif
+ serial_driver.set_termios = mgsl_set_termios;
+ serial_driver.stop = mgsl_stop;
+ serial_driver.start = mgsl_start;
+ serial_driver.hangup = mgsl_hangup;
+
+ /*
+ * The callout device is just like normal device except for
+ * major number and the subtype code.
+ */
+ callout_driver = serial_driver;
+ callout_driver.name = "cuaSL";
+ callout_driver.major = cuamajor;
+ callout_driver.subtype = SERIAL_TYPE_CALLOUT;
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ callout_driver.read_proc = 0;
+ callout_driver.proc_entry = 0;
+#endif
+
+ if (tty_register_driver(&serial_driver) < 0)
+ printk("%s(%d):Couldn't register serial driver\n",
+ __FILE__,__LINE__);
+
+ if (tty_register_driver(&callout_driver) < 0)
+ printk("%s(%d):Couldn't register callout driver\n",
+ __FILE__,__LINE__);
+
+ printk("%s version %s, tty major#%d callout major#%d\n",
+ driver_name, driver_version,
+ serial_driver.major, callout_driver.major);
+
+ /* Propagate these values to all device instances */


+
+ info = mgsl_device_list;
+ while(info){

+ info->callout_termios = callout_driver.init_termios;
+ info->normal_termios = serial_driver.init_termios;


+ info = info->next_device;
+ }
+

+ return 0;
+
+} /* end of mgsl_init() */
+
+#ifdef MODULE
+int init_module(void)
+{
+/* Uncomment this to kernel debug module.
+ * mgsl_get_text_ptr() leaves the .text address in eax
+ * which can be used with add-symbol-file with gdb.
+ */
+ if (break_on_load) {
+ mgsl_get_text_ptr();
+ BREAKPOINT();
+ }
+
+ return mgsl_init();
+}
+
+void cleanup_module(void)

+{
+ unsigned long flags;

+ int rc;


+ struct mgsl_struct *info;
+

+ printk("Unloading %s: version %s\n", driver_name, driver_version);
+ save_flags(flags);
+ cli();
+ if ((rc = tty_unregister_driver(&serial_driver)))
+ printk("%s(%d) failed to unregister tty driver err=%d\n",
+ __FILE__,__LINE__,rc);
+ if ((rc = tty_unregister_driver(&callout_driver)))
+ printk("%s(%d) failed to unregister callout driver err=%d\n",
+ __FILE__,__LINE__,rc);
+ restore_flags(flags);


+
+ info = mgsl_device_list;
+ while(info) {

+ mgsl_release_resources(info);


+ info = info->next_device;
+ }
+

+ if (tmp_buf) {
+ free_page((unsigned long) tmp_buf);
+ tmp_buf = NULL;
+ }
+
+ if (serial_table)
+ kfree_s(serial_table,sizeof(struct tty_struct*)*mgsl_device_count);
+
+ if (serial_termios)
+ kfree_s(serial_termios,sizeof(struct termios*)*mgsl_device_count);
+
+ if (serial_termios_locked)
+ kfree_s(serial_termios_locked,sizeof(struct termios*)*mgsl_device_count);
+
+} /* end of cleanup_module() */
+
+#endif /* MODULE */
+
+
+/*
+ * usc_RTCmd()
+ *
+ * Issue a USC Receive/Transmit command to the
+ * Channel Command/Address Register (CCAR).
+ *
+ * Notes:
+ *
+ * The command is encoded in the most significant 5 bits <15..11>
+ * of the CCAR value. Bits <10..7> of the CCAR must be preserved
+ * and Bits <6..0> must be written as zeros.


+ *
+ * Arguments:
+ *

+ * info pointer to device information structure
+ * Cmd command mask (use symbolic macros)


+ *
+ * Return Value:
+ *

+ * None
+ */
+void usc_RTCmd( struct mgsl_struct *info, u16 Cmd )
+{
+ /* output command to CCAR in bits <15..11> */
+ /* preserve bits <10..7>, bits <6..0> must be zero */
+
+ outw( Cmd + info->loopback_bits, info->io_base + CCAR );
+
+ /* Read to flush write to CCAR */


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ inw( info->io_base + CCAR );
+
+} /* end of usc_RTCmd() */
+
+/*
+ * usc_DmaCmd()
+ *
+ * Issue a DMA command to the DMA Command/Address Register (DCAR).


+ *
+ * Arguments:
+ *

+ * info pointer to device information structure
+ * Cmd DMA command mask (usc_DmaCmd_XX Macros)


+ *
+ * Return Value:
+ *

+ * None
+ */
+void usc_DmaCmd( struct mgsl_struct *info, u16 Cmd )
+{
+ /* write command mask to DCAR */
+ outw( Cmd + info->mbre_bit, info->io_base );
+
+ /* Read to flush write to DCAR */


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ inw( info->io_base );
+
+} /* end of usc_DmaCmd() */
+
+/*
+ * usc_OutDmaReg()
+ *
+ * Write a 16-bit value to a USC DMA register


+ *
+ * Arguments:
+ *

+ * info pointer to device info structure
+ * RegAddr register address (number) for write
+ * RegValue 16-bit value to write to register


+ *
+ * Return Value:
+ *

+ * None
+ *
+ */
+void usc_OutDmaReg( struct mgsl_struct *info, u16 RegAddr, u16 RegValue )
+{
+ /* Note: The DCAR is located at the adapter base address */
+ /* Note: must preserve state of BIT8 in DCAR */
+
+ outw( RegAddr + info->mbre_bit, info->io_base );
+ outw( RegValue, info->io_base );
+
+ /* Read to flush write to DCAR */


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ inw( info->io_base );
+
+} /* end of usc_OutDmaReg() */
+
+/*
+ * usc_InDmaReg()
+ *
+ * Read a 16-bit value from a DMA register


+ *
+ * Arguments:
+ *

+ * info pointer to device info structure
+ * RegAddr register address (number) to read from


+ *
+ * Return Value:
+ *

+ * The 16-bit value read from register
+ *
+ */
+u16 usc_InDmaReg( struct mgsl_struct *info, u16 RegAddr )
+{
+ /* Note: The DCAR is located at the adapter base address */
+ /* Note: must preserve state of BIT8 in DCAR */
+
+ outw( RegAddr + info->mbre_bit, info->io_base );
+ return inw( info->io_base );
+
+} /* end of usc_InDmaReg() */
+
+/*
+ *
+ * usc_OutReg()
+ *
+ * Write a 16-bit value to a USC serial channel register

+ *
+ * Arguments:
+ *

+ * info pointer to device info structure
+ * RegAddr register address (number) to write to
+ * RegValue 16-bit value to write to register


+ *
+ * Return Value:
+ *

+ * None
+ *
+ */
+void usc_OutReg( struct mgsl_struct *info, u16 RegAddr, u16 RegValue )
+{
+ outw( RegAddr + info->loopback_bits, info->io_base + CCAR );
+ outw( RegValue, info->io_base + CCAR );
+
+ /* Read to flush write to CCAR */


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ inw( info->io_base + CCAR );
+
+} /* end of usc_OutReg() */
+
+/*
+ * usc_InReg()
+ *
+ * Reads a 16-bit value from a USC serial channel register


+ *
+ * Arguments:
+ *

+ * info pointer to device extension
+ * RegAddr register address (number) to read from


+ *
+ * Return Value:
+ *

+ * 16-bit value read from register
+ */
+u16 usc_InReg( struct mgsl_struct *info, u16 RegAddr )
+{
+ outw( RegAddr + info->loopback_bits, info->io_base + CCAR );
+ return inw( info->io_base + CCAR );
+
+} /* end of usc_InReg() */
+
+/* usc_set_sdlc_mode()
+ *
+ * Set up the adapter for SDLC DMA communications.


+ *
+ * Arguments: info pointer to device instance data

+ * Return Value: NONE
+ */
+void usc_set_sdlc_mode( struct mgsl_struct *info )
+{
+ u16 RegValue;
+
+ /* Channel mode Register (CMR)
+ *
+ * <15..14> 00 Tx Sub modes, Underrun Action
+ * <13> 0 1 = Send Preamble before opening flag
+ * <12> 0 1 = Consecutive Idles share common 0
+ * <11..8> 0110 Transmitter mode = HDLC/SDLC
+ * <7..4> 0000 Rx Sub modes, addr/ctrl field handling
+ * <3..0> 0110 Receiver mode = HDLC/SDLC
+ *
+ * 0000 0110 0000 0110 = 0x0606
+ */
+
+ RegValue = 0x0606;
+
+ if ( info->params.flags & HDLC_FLAG_UNDERRUN_ABORT15 )
+ RegValue |= BIT14;
+ else if ( info->params.flags & HDLC_FLAG_UNDERRUN_FLAG )
+ RegValue |= BIT15;
+ else if ( info->params.flags & HDLC_FLAG_UNDERRUN_CRC )
+ RegValue |= BIT15 + BIT14;
+
+ if ( info->params.preamble != HDLC_PREAMBLE_PATTERN_NONE )
+ RegValue |= BIT13;
+
+ if ( info->params.flags & HDLC_FLAG_SHARE_ZERO )
+ RegValue |= BIT12;
+
+ if ( info->params.addr_filter != 0xff )
+ {
+ /* set up receive address filtering */
+ usc_OutReg( info, RSR, info->params.addr_filter );
+ RegValue |= BIT4;
+ }
+
+ usc_OutReg( info, CMR, RegValue );
+ info->cmr_value = RegValue;
+
+ /* Receiver mode Register (RMR)
+ *
+ * <15..13> 000 encoding
+ * <12..11> 00 FCS = 16bit CRC CCITT (x15 + x12 + x5 + 1)
+ * <10> 1 1 = Set CRC to all 1s (use for SDLC/HDLC)
+ * <9> 0 1 = Include Receive chars in CRC
+ * <8> 1 1 = Use Abort/PE bit as abort indicator
+ * <7..6> 00 Even parity
+ * <5> 0 parity disabled
+ * <4..2> 000 Receive Char Length = 8 bits
+ * <1..0> 00 Disable Receiver
+ *
+ * 0000 0101 0000 0000 = 0x0500
+ */
+
+ RegValue = 0x0500;
+
+ switch ( info->params.encoding ) {
+ case HDLC_ENCODING_NRZB: RegValue |= BIT13; break;
+ case HDLC_ENCODING_NRZI_MARK: RegValue |= BIT14; break;
+ case HDLC_ENCODING_NRZI_SPACE: RegValue |= BIT14 + BIT13; break;
+ case HDLC_ENCODING_BIPHASE_MARK: RegValue |= BIT15; break;
+ case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT15 + BIT13; break;
+ case HDLC_ENCODING_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14; break;
+ case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14 + BIT13; break;
+ }
+
+ if ( info->params.crc_type == HDLC_CRC_16_CCITT )
+ RegValue |= BIT9;
+
+ usc_OutReg( info, RMR, RegValue );
+
+
+
+ /* Set the Receive count Limit Register (RCLR) to 0xffff. */
+ /* When an opening flag of an SDLC frame is recognized the */
+ /* Receive Character count (RCC) is loaded with the value in */
+ /* RCLR. The RCC is decremented for each received byte. The */
+ /* value of RCC is stored after the closing flag of the frame */
+ /* allowing the frame size to be computed. */
+
+ usc_OutReg( info, RCLR, RCLRVALUE );
+
+ usc_RCmd( info, RCmd_SelectRicrdma_level );
+
+ /* Receive Interrupt Control Register (RICR)
+ *
+ * <15..8> ? RxFIFO DMA Request Level
+ * <7> 0 Exited Hunt IA (Interrupt Arm)
+ * <6> 0 Idle Received IA
+ * <5> 0 Break/Abort IA
+ * <4> 0 Rx Bound IA
+ * <3> 1 Queued status reflects oldest 2 bytes in FIFO
+ * <2> 0 Abort/PE IA
+ * <1> 1 Rx Overrun IA
+ * <0> 0 Select TC0 value for readback
+ *
+ * 0000 0000 0000 1000 = 0x000a
+ */
+
+ /* Carry over the Exit Hunt and Idle Received bits */
+ /* in case they have been armed by usc_ArmEvents. */
+
+ RegValue = usc_InReg( info, RICR ) & 0xc0;


+
+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ usc_OutReg( info, RICR, (u16)(0x030a | RegValue) );
+ else
+ usc_OutReg( info, RICR, (u16)(0x140a | RegValue) );
+
+ /* Unlatch all Rx status bits and clear Rx status IRQ Pending */
+
+ usc_UnlatchRxstatusBits( info, RXSTATUS_ALL );
+ usc_ClearIrqPendingBits( info, RECEIVE_STATUS );
+
+ /* Transmit mode Register (TMR)
+ *
+ * <15..13> 000 encoding
+ * <12..11> 00 FCS = 16bit CRC CCITT (x15 + x12 + x5 + 1)
+ * <10> 1 1 = Start CRC as all 1s (use for SDLC/HDLC)
+ * <9> 0 1 = Tx CRC Enabled
+ * <8> 0 1 = Append CRC to end of transmit frame
+ * <7..6> 00 Transmit parity Even
+ * <5> 0 Transmit parity Disabled
+ * <4..2> 000 Tx Char Length = 8 bits
+ * <1..0> 00 Disable Transmitter
+ *
+ * 0000 0100 0000 0000 = 0x0400
+ */
+
+ RegValue = 0x0400;
+
+ switch ( info->params.encoding ) {
+ case HDLC_ENCODING_NRZB: RegValue |= BIT13; break;
+ case HDLC_ENCODING_NRZI_MARK: RegValue |= BIT14; break;
+ case HDLC_ENCODING_NRZI_SPACE: RegValue |= BIT14 + BIT13; break;
+ case HDLC_ENCODING_BIPHASE_MARK: RegValue |= BIT15; break;
+ case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT15 + BIT13; break;
+ case HDLC_ENCODING_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14; break;
+ case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: RegValue |= BIT15 + BIT14 + BIT13; break;
+ }
+
+ if ( info->params.crc_type == HDLC_CRC_16_CCITT )
+ RegValue |= BIT9 + BIT8;
+
+ usc_OutReg( info, TMR, RegValue );
+


+ usc_set_txidle( info );
+

+
+ usc_TCmd( info, TCmd_SelectTicrdma_level );
+
+ /* Transmit Interrupt Control Register (TICR)
+ *
+ * <15..8> ? Transmit FIFO DMA Level
+ * <7> 0 Present IA (Interrupt Arm)
+ * <6> 0 Idle Sent IA
+ * <5> 1 Abort Sent IA
+ * <4> 1 EOF/EOM Sent IA
+ * <3> 0 CRC Sent IA
+ * <2> 1 1 = Wait for SW Trigger to Start Frame
+ * <1> 1 Tx Underrun IA
+ * <0> 0 TC0 constant on read back
+ *
+ * 0000 0000 0011 0110 = 0x0036
+ */
+


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ usc_OutReg( info, TICR, 0x0736 );
+ else
+ usc_OutReg( info, TICR, 0x1436 );
+
+ usc_UnlatchTxstatusBits( info, TXSTATUS_ALL );
+ usc_ClearIrqPendingBits( info, TRANSMIT_STATUS );
+
+ /* Clock mode Control Register (CMCR)
+ *
+ * <15..14> 00 counter 1 Source = Disabled
+ * <13..12> 00 counter 0 Source = Disabled
+ * <11..10> 11 BRG1 Input is TxC Pin
+ * <9..8> 11 BRG0 Input is TxC Pin
+ * <7..6> 01 DPLL Input is BRG1 Output
+ * <5..3> XXX TxCLK comes from Port 0
+ * <2..0> XXX RxCLK comes from Port 1
+ *
+ * 0000 1111 0111 0111 = 0x0f77
+ */
+
+ RegValue = 0x0f40;
+
+ if ( info->params.flags & HDLC_FLAG_RXC_DPLL )
+ RegValue |= 0x0003; /* RxCLK from DPLL */
+ else if ( info->params.flags & HDLC_FLAG_RXC_BRG )
+ RegValue |= 0x0004; /* RxCLK from BRG0 */
+ else
+ RegValue |= 0x0007; /* RxCLK from Port1 */
+
+ if ( info->params.flags & HDLC_FLAG_TXC_DPLL )
+ RegValue |= 0x0018; /* TxCLK from DPLL */
+ else if ( info->params.flags & HDLC_FLAG_TXC_BRG )
+ RegValue |= 0x0020; /* TxCLK from BRG0 */
+ else
+ RegValue |= 0x0030; /* TxCLK from Port0 */
+
+ usc_OutReg( info, CMCR, RegValue );
+
+
+ /* Hardware Configuration Register (HCR)
+ *
+ * <15..14> 00 CTR0 Divisor:00=32,01=16,10=8,11=4
+ * <13> 0 CTR1DSel:0=CTR0Div determines CTR0Div
+ * <12> 0 CVOK:0=report code violation in biphase
+ * <11..10> 00 DPLL Divisor:00=32,01=16,10=8,11=4
+ * <9..8> XX DPLL mode:00=disable,01=NRZ,10=Biphase,11=Biphase Level
+ * <7..6> 00 reserved
+ * <5> 0 BRG1 mode:0=continuous,1=single cycle
+ * <4> X BRG1 Enable
+ * <3..2> 00 reserved
+ * <1> 0 BRG0 mode:0=continuous,1=single cycle
+ * <0> 0 BRG0 Enable
+ */
+
+ RegValue = 0x0000;
+
+ if ( info->params.flags & (HDLC_FLAG_RXC_DPLL + HDLC_FLAG_TXC_DPLL) ) {
+ u32 XtalSpeed;
+ u32 DpllDivisor;
+ u16 Tc;
+
+ /* DPLL is enabled. Use BRG1 to provide continuous reference clock */
+ /* for DPLL. DPLL mode in HCR is dependent on the encoding used. */
+


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ XtalSpeed = 11059200;
+ else
+ XtalSpeed = 14745600;
+
+ if ( info->params.flags & HDLC_FLAG_DPLL_DIV16 ) {
+ DpllDivisor = 16;
+ RegValue |= BIT10;
+ }
+ else if ( info->params.flags & HDLC_FLAG_DPLL_DIV8 ) {
+ DpllDivisor = 8;
+ RegValue |= BIT11;
+ }
+ else
+ DpllDivisor = 32;
+
+ /* Tc = (Xtal/Speed) - 1 */
+ /* If twice the remainder of (Xtal/Speed) is greater than Speed */
+ /* then rounding up gives a more precise time constant. Instead */
+ /* of rounding up and then subtracting 1 we just don't subtract */
+ /* the one in this case. */
+
+ Tc = (u16)((XtalSpeed/DpllDivisor)/info->params.clock_speed);
+ if ( !((((XtalSpeed/DpllDivisor) % info->params.clock_speed) * 2)
+ / info->params.clock_speed) )
+ Tc--;
+
+ /* Write 16-bit Time Constant for BRG1 */
+ usc_OutReg( info, TC1R, Tc );
+
+ RegValue |= BIT4; /* enable BRG1 */
+
+ switch ( info->params.encoding ) {
+ case HDLC_ENCODING_NRZ:
+ case HDLC_ENCODING_NRZB:
+ case HDLC_ENCODING_NRZI_MARK:
+ case HDLC_ENCODING_NRZI_SPACE: RegValue |= BIT8; break;
+ case HDLC_ENCODING_BIPHASE_MARK:
+ case HDLC_ENCODING_BIPHASE_SPACE: RegValue |= BIT9; break;
+ case HDLC_ENCODING_BIPHASE_LEVEL:
+ case HDLC_ENCODING_DIFF_BIPHASE_LEVEL: RegValue |= BIT9 + BIT8; break;
+ }
+ }
+
+ usc_OutReg( info, HCR, RegValue );
+
+
+ /* Channel Control/status Register (CCSR)
+ *
+ * <15> X RCC FIFO Overflow status (RO)
+ * <14> X RCC FIFO Not Empty status (RO)
+ * <13> 0 1 = Clear RCC FIFO (WO)
+ * <12> X DPLL Sync (RW)
+ * <11> X DPLL 2 Missed Clocks status (RO)
+ * <10> X DPLL 1 Missed Clock status (RO)
+ * <9..8> 00 DPLL Resync on rising and falling edges (RW)
+ * <7> X SDLC Loop On status (RO)
+ * <6> X SDLC Loop Send status (RO)
+ * <5> 1 Bypass counters for TxClk and RxClk (RW)
+ * <4..2> 000 Last Char of SDLC frame has 8 bits (RW)
+ * <1..0> 00 reserved
+ *
+ * 0000 0000 0010 0000 = 0x0020
+ */
+
+ usc_OutReg( info, CCSR, 0x1020 );
+
+
+ if ( info->params.flags & HDLC_FLAG_AUTO_CTS ) {
+ usc_OutReg( info, SICR,
+ (u16)(usc_InReg(info,SICR) | SICR_CTS_INACTIVE) );
+ }
+
+
+ /* enable Master Interrupt Enable bit (MIE) */
+ usc_EnableMasterIrqBit( info );
+
+ usc_ClearIrqPendingBits( info, RECEIVE_STATUS + RECEIVE_DATA +
+ TRANSMIT_STATUS + TRANSMIT_DATA );
+
+ info->mbre_bit = 0;
+ outw( 0, info->io_base ); /* clear Master Bus Enable (DCAR) */
+ usc_DmaCmd( info, DmaCmd_ResetAllChannels ); /* disable both DMA channels */
+ info->mbre_bit = BIT8;
+ outw( BIT8, info->io_base ); /* set Master Bus Enable (DCAR) */
+
+ /* Enable DMAEN (Port 7, Bit 14) */
+ /* This connects the DMA request signal to the ISA bus */
+ /* on the ISA adapter. This has no effect for the PCI adapter */
+ usc_OutReg( info, PCR, (u16)((usc_InReg(info, PCR) | BIT15) & ~BIT14) );
+
+ /* DMA Control Register (DCR)
+ *
+ * <15..14> 10 Priority mode = Alternating Tx/Rx
+ * 01 Rx has priority
+ * 00 Tx has priority
+ *
+ * <13> 1 Enable Priority Preempt per DCR<15..14>
+ * (WARNING DCR<11..10> must be 00 when this is 1)
+ * 0 Choose activate channel per DCR<11..10>
+ *
+ * <12> 0 Little Endian for Array/List
+ * <11..10> 00 Both Channels can use each bus grant
+ * <9..6> 0000 reserved
+ * <5> 0 7 CLK - Minimum Bus Re-request Interval
+ * <4> 0 1 = drive D/C and S/D pins
+ * <3> 1 1 = Add one wait state to all DMA cycles.
+ * <2> 0 1 = Strobe /UAS on every transfer.
+ * <1..0> 11 Addr incrementing only affects LS24 bits
+ *
+ * 0110 0000 0000 1011 = 0x600b
+ */
+


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI ) {

+ /* PCI adapter does not need DMA wait state */
+ usc_OutDmaReg( info, DCR, 0xa00b );
+ }
+ else
+ usc_OutDmaReg( info, DCR, 0x800b );
+
+
+ /* Receive DMA mode Register (RDMR)
+ *
+ * <15..14> 11 DMA mode = Linked List Buffer mode
+ * <13> 1 RSBinA/L = store Rx status Block in Arrary/List entry
+ * <12> 1 Clear count of List Entry after fetching
+ * <11..10> 00 Address mode = Increment
+ * <9> 1 Terminate Buffer on RxBound
+ * <8> 0 Bus Width = 16bits
+ * <7..0> ? status Bits (write as 0s)
+ *
+ * 1111 0010 0000 0000 = 0xf200
+ */
+
+ usc_OutDmaReg( info, RDMR, 0xf200 );
+
+
+ /* Transmit DMA mode Register (TDMR)
+ *
+ * <15..14> 11 DMA mode = Linked List Buffer mode
+ * <13> 1 TCBinA/L = fetch Tx Control Block from List entry
+ * <12> 1 Clear count of List Entry after fetching
+ * <11..10> 00 Address mode = Increment
+ * <9> 1 Terminate Buffer on end of frame
+ * <8> 0 Bus Width = 16bits
+ * <7..0> ? status Bits (Read Only so write as 0)
+ *
+ * 1111 0010 0000 0000 = 0xf200
+ */
+
+ usc_OutDmaReg( info, TDMR, 0xf200 );
+
+
+ /* DMA Interrupt Control Register (DICR)
+ *
+ * <15> 1 DMA Interrupt Enable
+ * <14> 0 1 = Disable IEO from USC
+ * <13> 0 1 = Don't provide vector during IntAck
+ * <12> 1 1 = Include status in Vector
+ * <10..2> 0 reserved, Must be 0s
+ * <1> 0 1 = Rx DMA Interrupt Enabled
+ * <0> 0 1 = Tx DMA Interrupt Enabled
+ *
+ * 1001 0000 0000 0000 = 0x9000
+ */
+
+ usc_OutDmaReg( info, DICR, 0x9000 );
+
+ usc_InDmaReg( info, RDMR ); /* clear pending receive DMA IRQ bits */
+ usc_InDmaReg( info, TDMR ); /* clear pending transmit DMA IRQ bits */
+ usc_OutDmaReg( info, CDIR, 0x0303 ); /* clear IUS and Pending for Tx and Rx */
+
+ /* Channel Control Register (CCR)
+ *
+ * <15..14> 10 Use 32-bit Tx Control Blocks (TCBs)
+ * <13> 0 Trigger Tx on SW Command Disabled
+ * <12> 0 Flag Preamble Disabled
+ * <11..10> 00 Preamble Length
+ * <9..8> 00 Preamble Pattern
+ * <7..6> 10 Use 32-bit Rx status Blocks (RSBs)
+ * <5> 0 Trigger Rx on SW Command Disabled
+ * <4..0> 0 reserved
+ *
+ * 1000 0000 1000 0000 = 0x8080
+ */
+
+ RegValue = 0x8080;
+
+ switch ( info->params.preamble_length ) {
+ case HDLC_PREAMBLE_LENGTH_16BITS: RegValue |= BIT10; break;
+ case HDLC_PREAMBLE_LENGTH_32BITS: RegValue |= BIT11; break;
+ case HDLC_PREAMBLE_LENGTH_64BITS: RegValue |= BIT11 + BIT10; break;
+ }
+
+ switch ( info->params.preamble ) {
+ case HDLC_PREAMBLE_PATTERN_FLAGS: RegValue |= BIT8 + BIT12; break;
+ case HDLC_PREAMBLE_PATTERN_ONES: RegValue |= BIT8; break;
+ case HDLC_PREAMBLE_PATTERN_10: RegValue |= BIT9; break;
+ case HDLC_PREAMBLE_PATTERN_01: RegValue |= BIT9 + BIT8; break;
+ }
+
+ usc_OutReg( info, CCR, RegValue );
+
+
+ /*
+ * Burst/Dwell Control Register
+ *
+ * <15..8> 0x20 Maximum number of transfers per bus grant
+ * <7..0> 0x00 Maximum number of clock cycles per bus grant
+ */
+


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI ) {

+ /* don't limit bus occupancy on PCI adapter */
+ usc_OutDmaReg( info, BDCR, 0x0000 );
+ }
+ else
+ usc_OutDmaReg( info, BDCR, 0x2000 );
+
+ usc_stop_transmitter(info);
+ usc_stop_receiver(info);
+
+} /* end of usc_set_sdlc_mode() */
+
+/* usc_enable_loopback()
+ *
+ * Set the 16C32 for internal loopback mode.
+ * The TxCLK and RxCLK signals are generated from the BRG0 and
+ * the TxD is looped back to the RxD internally.


+ *
+ * Arguments: info pointer to device instance data

+ * enable 1 = enable loopback, 0 = disable
+ * Return Value: None
+ */
+void usc_enable_loopback(struct mgsl_struct *info, int enable)
+{
+ if (enable) {
+ /* blank external TXD output */
+ usc_OutReg(info,IOCR,usc_InReg(info,IOCR) | (BIT7+BIT6));
+
+ /* Clock mode Control Register (CMCR)
+ *
+ * <15..14> 00 counter 1 Disabled
+ * <13..12> 00 counter 0 Disabled
+ * <11..10> 11 BRG1 Input is TxC Pin
+ * <9..8> 11 BRG0 Input is TxC Pin
+ * <7..6> 01 DPLL Input is BRG1 Output
+ * <5..3> 100 TxCLK comes from BRG0
+ * <2..0> 100 RxCLK comes from BRG0
+ *
+ * 0000 1111 0110 0100 = 0x0f64
+ */
+
+ usc_OutReg( info, CMCR, 0x0f64 );
+
+ /* Write 16-bit Time Constant for BRG0 */
+ /* use clock speed if available, otherwise use 8 for diagnostics */
+ if (info->params.clock_speed) {


+ if (info->bus_type == MGSL_BUS_TYPE_PCI)

+ usc_OutReg(info, TC0R, (u16)((11059200/info->params.clock_speed)-1));
+ else
+ usc_OutReg(info, TC0R, (u16)((14745600/info->params.clock_speed)-1));
+ } else
+ usc_OutReg(info, TC0R, (u16)8);
+
+ /* Hardware Configuration Register (HCR) Clear Bit 1, BRG0
+ mode = Continuous Set Bit 0 to enable BRG0. */
+ usc_OutReg( info, HCR, (u16)((usc_InReg( info, HCR ) & ~BIT1) | BIT0) );
+
+ /* Input/Output Control Reg, <2..0> = 100, Drive RxC pin with BRG0 */
+ usc_OutReg(info, IOCR, (u16)((usc_InReg(info, IOCR) & 0xfff8) | 0x0004));
+
+ /* set Internal Data loopback mode */
+ info->loopback_bits = 0x300;
+ outw( 0x0300, info->io_base + CCAR );
+ } else {
+ /* enable external TXD output */
+ usc_OutReg(info,IOCR,usc_InReg(info,IOCR) & ~(BIT7+BIT6));
+
+ /* clear Internal Data loopback mode */
+ info->loopback_bits = 0;
+ outw( 0,info->io_base + CCAR );
+ }
+
+} /* end of usc_enable_loopback() */
+
+/* usc_enable_aux_clock()
+ *
+ * Enabled the AUX clock output at the specified frequency.


+ *
+ * Arguments:
+ *

+ * info pointer to device extension
+ * data_rate data rate of clock in bits per second
+ * A data rate of 0 disables the AUX clock.


+ *
+ * Return Value: None
+ */

+void usc_enable_aux_clock( struct mgsl_struct *info, u32 data_rate )
+{
+ u32 XtalSpeed;
+ u16 Tc;
+
+ if ( data_rate ) {


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ XtalSpeed = 11059200;
+ else
+ XtalSpeed = 14745600;
+
+
+ /* Tc = (Xtal/Speed) - 1 */
+ /* If twice the remainder of (Xtal/Speed) is greater than Speed */
+ /* then rounding up gives a more precise time constant. Instead */
+ /* of rounding up and then subtracting 1 we just don't subtract */
+ /* the one in this case. */
+
+
+ Tc = (u16)(XtalSpeed/data_rate);
+ if ( !(((XtalSpeed % data_rate) * 2) / data_rate) )
+ Tc--;
+
+ /* Write 16-bit Time Constant for BRG0 */
+ usc_OutReg( info, TC0R, Tc );
+
+ /*
+ * Hardware Configuration Register (HCR)
+ * Clear Bit 1, BRG0 mode = Continuous
+ * Set Bit 0 to enable BRG0.
+ */
+
+ usc_OutReg( info, HCR, (u16)((usc_InReg( info, HCR ) & ~BIT1) | BIT0) );
+
+ /* Input/Output Control Reg, <2..0> = 100, Drive RxC pin with BRG0 */
+ usc_OutReg( info, IOCR, (u16)((usc_InReg(info, IOCR) & 0xfff8) | 0x0004) );
+ } else {
+ /* data rate == 0 so turn off BRG0 */
+ usc_OutReg( info, HCR, (u16)(usc_InReg( info, HCR ) & ~BIT0) );
+ }
+
+} /* end of usc_enable_aux_clock() */
+
+/* usc_stop_receiver()
+ *
+ * Disable USC receiver


+ *
+ * Arguments: info pointer to device instance data

+ * Return Value: None
+ */

+void usc_stop_receiver( struct mgsl_struct *info )
+{
+ if (debug_level >= DEBUG_LEVEL_ISR)
+ printk("%s(%d):usc_stop_receiver(%s)\n",


+ __FILE__,__LINE__, info->device_name );
+

+ /* Disable receive DMA channel. */
+ /* This also disables receive DMA channel interrupts */
+ usc_DmaCmd( info, DmaCmd_ResetRxChannel );
+
+ usc_UnlatchRxstatusBits( info, RXSTATUS_ALL );
+ usc_ClearIrqPendingBits( info, RECEIVE_DATA + RECEIVE_STATUS );
+ usc_DisableInterrupts( info, RECEIVE_DATA + RECEIVE_STATUS );
+
+ usc_EnableReceiver(info,DISABLE_UNCONDITIONAL);
+
+ /* This empties the receive FIFO and loads the RCC with RCLR */
+ usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) );
+ usc_RTCmd( info, RTCmd_PurgeRxFifo );
+
+ info->rx_enabled = 0;
+ info->rx_overflow = 0;
+
+} /* end of stop_receiver() */
+
+/* usc_start_receiver()
+ *
+ * Enable the USC receiver

+ *
+ * Arguments: info pointer to device instance data

+ * Return Value: None
+ */

+void usc_start_receiver( struct mgsl_struct *info )
+{
+ u32 phys_addr;
+
+ if (debug_level >= DEBUG_LEVEL_ISR)
+ printk("%s(%d):usc_start_receiver(%s)\n",


+ __FILE__,__LINE__, info->device_name );
+

+ mgsl_reset_rx_dma_buffers( info );
+ usc_stop_receiver( info );
+
+ usc_OutReg( info, CCSR, (u16)(usc_InReg(info,CCSR) | BIT13) );
+ usc_RTCmd( info, RTCmd_PurgeRxFifo );
+
+ if ( info->params.mode == MGSL_MODE_HDLC ) {
+ /* DMA mode Transfers */
+ /* Program the DMA controller. */
+ /* Enable the DMA controller end of buffer interrupt. */
+
+ /* program 16C32 with physical address of 1st DMA buffer entry */
+ phys_addr = info->rx_buffer_list[0].phys_entry;
+ usc_OutDmaReg( info, NRARL, (u16)phys_addr );
+ usc_OutDmaReg( info, NRARU, (u16)(phys_addr >> 16) );
+
+ usc_UnlatchRxstatusBits( info, RXSTATUS_ALL );
+ usc_ClearIrqPendingBits( info, RECEIVE_DATA + RECEIVE_STATUS );
+ usc_EnableInterrupts( info, RECEIVE_STATUS );
+
+ /* 1. Arm End of Buffer (EOB) Receive DMA Interrupt (BIT2 of RDIAR) */
+ /* 2. Enable Receive DMA Interrupts (BIT1 of DICR) */
+
+ usc_OutDmaReg( info, RDIAR, BIT3 + BIT2 );
+ usc_OutDmaReg( info, DICR, (u16)(usc_InDmaReg(info,DICR) | BIT1) );
+ usc_DmaCmd( info, DmaCmd_InitRxChannel );
+ if ( info->params.flags & HDLC_FLAG_AUTO_DCD )
+ usc_EnableReceiver(info,ENABLE_AUTO_DCD);
+ else
+ usc_EnableReceiver(info,ENABLE_UNCONDITIONAL);
+ } else {
+ usc_UnlatchRxstatusBits(info, RXSTATUS_ALL);
+ usc_ClearIrqPendingBits(info, RECEIVE_DATA + RECEIVE_STATUS);
+ usc_EnableInterrupts(info, RECEIVE_DATA);
+
+ usc_RTCmd( info, RTCmd_PurgeRxFifo );
+ usc_RCmd( info, RCmd_EnterHuntmode );
+
+ usc_EnableReceiver(info,ENABLE_UNCONDITIONAL);
+ }
+
+ usc_OutReg( info, CCSR, 0x1020 );
+
+ info->rx_enabled = 1;
+
+} /* end of usc_start_receiver() */
+
+/* usc_start_transmitter()
+ *
+ * Enable the USC transmitter and send a transmit frame if
+ * one is loaded in the DMA buffers.


+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: None
+ */

+void usc_start_transmitter( struct mgsl_struct *info )
+{
+ u32 phys_addr;
+ unsigned int FrameSize;
+
+ if (debug_level >= DEBUG_LEVEL_ISR)
+ printk("%s(%d):usc_start_transmitter(%s)\n",


+ __FILE__,__LINE__, info->device_name );
+

+ if ( info->xmit_cnt ) {
+
+ /* If auto RTS enabled and RTS is inactive, then assert */
+ /* RTS and set a flag indicating that the driver should */
+ /* negate RTS when the transmission completes. */
+
+ info->drop_rts_on_tx_done = 0;
+
+ if ( info->params.flags & HDLC_FLAG_AUTO_RTS ) {
+ usc_get_serial_signals( info );
+ if ( !(info->serial_signals & SerialSignal_RTS) ) {


+ info->serial_signals |= SerialSignal_RTS;
+ usc_set_serial_signals( info );

+ info->drop_rts_on_tx_done = 1;
+ }
+ }
+
+
+ if ( info->params.mode == MGSL_MODE_ASYNC ) {
+ if ( !info->tx_active ) {
+ usc_UnlatchTxstatusBits(info, TXSTATUS_ALL);
+ usc_ClearIrqPendingBits(info, TRANSMIT_STATUS + TRANSMIT_DATA);
+ usc_EnableInterrupts(info, TRANSMIT_DATA);
+ usc_load_txfifo(info);
+ }
+ } else {
+ /* Disable transmit DMA controller while programming. */
+ usc_DmaCmd( info, DmaCmd_ResetTxChannel );
+
+ /* Transmit DMA buffer is loaded, so program USC */
+ /* to send the frame contained in the buffers. */
+
+
+ FrameSize = info->tx_buffer_list[0].rcc;
+
+ /* Program the Transmit Character Length Register (TCLR) */
+ /* and clear FIFO (TCC is loaded with TCLR on FIFO clear) */
+ usc_OutReg( info, TCLR, (u16)FrameSize );
+
+ usc_RTCmd( info, RTCmd_PurgeTxFifo );
+
+ /* Program the address of the 1st DMA Buffer Entry in linked list */
+ phys_addr = info->tx_buffer_list[0].phys_entry;
+ usc_OutDmaReg( info, NTARL, (u16)phys_addr );
+ usc_OutDmaReg( info, NTARU, (u16)(phys_addr >> 16) );
+
+ usc_UnlatchTxstatusBits( info, TXSTATUS_ALL );
+ usc_ClearIrqPendingBits( info, TRANSMIT_STATUS );
+ usc_EnableInterrupts( info, TRANSMIT_STATUS );
+
+ /* Initialize Transmit DMA Channel */
+ usc_DmaCmd( info, DmaCmd_InitTxChannel );
+
+ usc_TCmd( info, TCmd_SendFrame );
+
+ info->tx_timer.expires = jiffies + jiffies_from_ms(5000);
+ add_timer(&info->tx_timer);
+ }
+ info->tx_active = 1;
+ }
+


+ if ( !info->tx_enabled ) {

+ info->tx_enabled = 1;
+ if ( info->params.flags & HDLC_FLAG_AUTO_CTS )
+ usc_EnableTransmitter(info,ENABLE_AUTO_CTS);
+ else
+ usc_EnableTransmitter(info,ENABLE_UNCONDITIONAL);
+ }
+
+} /* end of usc_start_transmitter() */
+
+/* usc_stop_transmitter()
+ *
+ * Stops the transmitter and DMA
+ *
+ * Arguments: info pointer to device isntance data


+ * Return Value: None
+ */

+void usc_stop_transmitter( struct mgsl_struct *info )
+{
+ if (debug_level >= DEBUG_LEVEL_ISR)
+ printk("%s(%d):usc_stop_transmitter(%s)\n",


+ __FILE__,__LINE__, info->device_name );
+

+ del_timer(&info->tx_timer);
+
+ usc_UnlatchTxstatusBits( info, TXSTATUS_ALL );
+ usc_ClearIrqPendingBits( info, TRANSMIT_STATUS + TRANSMIT_DATA );
+ usc_DisableInterrupts( info, TRANSMIT_STATUS + TRANSMIT_DATA );
+
+ usc_EnableTransmitter(info,DISABLE_UNCONDITIONAL);
+ usc_DmaCmd( info, DmaCmd_ResetTxChannel );
+ usc_RTCmd( info, RTCmd_PurgeTxFifo );
+
+ info->tx_enabled = 0;
+ info->tx_active = 0;
+
+} /* end of usc_stop_transmitter() */
+
+/* usc_load_txfifo()
+ *
+ * Fill the transmit FIFO until the FIFO is full or
+ * there is no more data to load.
+ *
+ * Arguments: info pointer to device extension (instance data)


+ * Return Value: None
+ */

+void usc_load_txfifo( struct mgsl_struct *info )
+{
+ int Fifocount;
+ u8 TwoBytes[2];
+
+ if ( !info->xmit_cnt && !info->x_char )
+ return;
+
+ /* Select transmit FIFO status readback in TICR */
+ usc_TCmd( info, TCmd_SelectTicrTxFifostatus );
+
+ /* load the Transmit FIFO until FIFOs full or all data sent */
+
+ while( (Fifocount = usc_InReg(info, TICR) >> 8) && info->xmit_cnt ) {
+ /* there is more space in the transmit FIFO and */
+ /* there is more data in transmit buffer */
+
+ if ( (info->xmit_cnt > 1) && (Fifocount > 1) && !info->x_char ) {
+ /* write a 16-bit word from transmit buffer to 16C32 */
+
+ TwoBytes[0] = info->xmit_buf[info->xmit_tail++];
+ info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
+ TwoBytes[1] = info->xmit_buf[info->xmit_tail++];
+ info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
+
+ outw( *((u16 *)TwoBytes), info->io_base + DATAREG);
+
+ info->xmit_cnt -= 2;
+ info->icount.tx += 2;
+ } else {
+ /* only 1 byte left to transmit or 1 FIFO slot left */
+
+ outw( (inw( info->io_base + CCAR) & 0x0780) | (TDR+LSBONLY),
+ info->io_base + CCAR );
+
+ if (info->x_char) {
+ /* transmit pending high priority char */
+ outw( info->x_char,info->io_base + CCAR );


+ info->x_char = 0;
+ } else {

+ outw( info->xmit_buf[info->xmit_tail++],info->io_base + CCAR );
+ info->xmit_tail = info->xmit_tail & (SERIAL_XMIT_SIZE-1);
+ info->xmit_cnt--;
+ }
+ info->icount.tx++;
+ }
+ }
+
+} /* end of usc_load_txfifo() */
+
+/* usc_reset()
+ *
+ * Reset the adapter to a known state and prepare it for further use.


+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: None
+ */

+void usc_reset( struct mgsl_struct *info )
+{


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI ) {

+ int i;
+ volatile u32 readval;
+
+ /* Set BIT30 of Misc Control Register */
+ /* (Local Control Register 0x50) to force reset of USC. */
+
+ u32 *MiscCtrl = (u32 *)(info->lcr_base + 0x50);
+ u32 *LCR0BRDR = (u32 *)(info->lcr_base + 0x28);
+
+ info->misc_ctrl_value |= BIT30;
+ *MiscCtrl = info->misc_ctrl_value;
+
+ /*
+ * Force at least 170ns delay before clearing
+ * reset bit. Each read from LCR takes at least
+ * 30ns so 10 times for 300ns to be safe.
+ */
+ for(i=0;i<10;i++)
+ readval = *MiscCtrl;
+
+ info->misc_ctrl_value &= ~BIT30;
+ *MiscCtrl = info->misc_ctrl_value;
+
+ *LCR0BRDR = BUS_DESCRIPTOR(
+ 1, // Write Strobe Hold (0-3)
+ 2, // Write Strobe Delay (0-3)
+ 2, // Read Strobe Delay (0-3)
+ 0, // NWDD (Write data-data) (0-3)
+ 4, // NWAD (Write Addr-data) (0-31)
+ 0, // NXDA (Read/Write Data-Addr) (0-3)
+ 0, // NRDD (Read Data-Data) (0-3)
+ 5 // NRAD (Read Addr-Data) (0-31)
+ );
+ } else {
+ /* do HW reset */
+ outb( 0,info->io_base + 8 );
+ }
+
+ info->mbre_bit = 0;
+ info->loopback_bits = 0;
+ info->usc_idle_mode = 0;
+
+ /*
+ * Program the Bus Configuration Register (BCR)
+ *
+ * <15> 0 Don't use seperate address
+ * <14..6> 0 reserved
+ * <5..4> 00 IAckmode = Default, don't care
+ * <3> 1 Bus Request Totem Pole output
+ * <2> 1 Use 16 Bit data bus
+ * <1> 0 IRQ Totem Pole output
+ * <0> 0 Don't Shift Right Addr
+ *
+ * 0000 0000 0000 1100 = 0x000c
+ *
+ * By writing to io_base + SDPIN the Wait/Ack pin is
+ * programmed to work as a Wait pin.
+ */
+
+ outw( 0x000c,info->io_base + SDPIN );
+
+
+ outw( 0,info->io_base );
+ outw( 0,info->io_base + CCAR );
+
+ /* select little endian byte ordering */
+ usc_RTCmd( info, RTCmd_SelectLittleEndian );
+
+
+ /* Port Control Register (PCR)
+ *
+ * <15..14> 11 Port 7 is Output (~DMAEN, Bit 14 : 0 = Enabled)
+ * <13..12> 11 Port 6 is Output (~INTEN, Bit 12 : 0 = Enabled)
+ * <11..10> 00 Port 5 is Input (No Connect, Don't Care)
+ * <9..8> 00 Port 4 is Input (No Connect, Don't Care)
+ * <7..6> 11 Port 3 is Output (~RTS, Bit 6 : 0 = Enabled )
+ * <5..4> 11 Port 2 is Output (~DTR, Bit 4 : 0 = Enabled )
+ * <3..2> 01 Port 1 is Input (Dedicated RxC)
+ * <1..0> 01 Port 0 is Input (Dedicated TxC)
+ *
+ * 1111 0000 1111 0101 = 0xf0f5
+ */
+
+ usc_OutReg( info, PCR, 0xf0f5 );
+
+
+ /*
+ * Input/Output Control Register
+ *
+ * <15..14> 00 CTS is active low input
+ * <13..12> 00 DCD is active low input
+ * <11..10> 00 TxREQ pin is input (DSR)
+ * <9..8> 00 RxREQ pin is input (RI)
+ * <7..6> 00 TxD is output (Transmit Data)
+ * <5..3> 000 TxC Pin in Input (14.7456MHz Clock)
+ * <2..0> 100 RxC is Output (drive with BRG0)
+ *
+ * 0000 0000 0000 0100 = 0x0004
+ */
+
+ usc_OutReg( info, IOCR, 0x0004 );
+
+} /* end of usc_reset() */
+
+/* usc_set_async_mode()
+ *
+ * Program adapter for asynchronous communications.


+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: None
+ */

+void usc_set_async_mode( struct mgsl_struct *info )
+{
+ u16 RegValue;
+
+ /* disable interrupts while programming USC */
+ usc_DisableMasterIrqBit( info );
+
+ outw( 0, info->io_base ); /* clear Master Bus Enable (DCAR) */
+ usc_DmaCmd( info, DmaCmd_ResetAllChannels ); /* disable both DMA channels */
+
+ usc_loopback_frame( info );
+
+ /* Channel mode Register (CMR)
+ *
+ * <15..14> 00 Tx Sub modes, 00 = 1 Stop Bit
+ * <13..12> 00 00 = 16X Clock
+ * <11..8> 0000 Transmitter mode = Asynchronous
+ * <7..6> 00 reserved?
+ * <5..4> 00 Rx Sub modes, 00 = 16X Clock
+ * <3..0> 0000 Receiver mode = Asynchronous
+ *
+ * 0000 0000 0000 0000 = 0x0
+ */
+
+ RegValue = 0;
+ if ( info->params.stop_bits != 1 )
+ RegValue |= BIT14;
+ usc_OutReg( info, CMR, RegValue );
+
+
+ /* Receiver mode Register (RMR)
+ *
+ * <15..13> 000 encoding = None
+ * <12..08> 00000 reserved (Sync Only)
+ * <7..6> 00 Even parity
+ * <5> 0 parity disabled
+ * <4..2> 000 Receive Char Length = 8 bits
+ * <1..0> 00 Disable Receiver
+ *
+ * 0000 0000 0000 0000 = 0x0
+ */
+
+ RegValue = 0;
+
+ if ( info->params.data_bits != 8 )
+ RegValue |= BIT4+BIT3+BIT2;
+
+ if ( info->params.parity != ASYNC_PARITY_NONE ) {
+ RegValue |= BIT5;
+ if ( info->params.parity != ASYNC_PARITY_ODD )
+ RegValue |= BIT6;
+ }
+
+ usc_OutReg( info, RMR, RegValue );
+
+
+ /* Set IRQ trigger level */
+
+ usc_RCmd( info, RCmd_SelectRicrIntLevel );
+
+
+ /* Receive Interrupt Control Register (RICR)
+ *
+ * <15..8> ? RxFIFO IRQ Request Level
+ *
+ * Note: For async mode the receive FIFO level must be set
+ * to 0 to aviod the situation where the FIFO contains fewer bytes
+ * than the trigger level and no more data is expected.
+ *
+ * <7> 0 Exited Hunt IA (Interrupt Arm)
+ * <6> 0 Idle Received IA
+ * <5> 0 Break/Abort IA
+ * <4> 0 Rx Bound IA
+ * <3> 0 Queued status reflects oldest byte in FIFO
+ * <2> 0 Abort/PE IA
+ * <1> 0 Rx Overrun IA
+ * <0> 0 Select TC0 value for readback
+ *
+ * 0000 0000 0100 0000 = 0x0000 + (FIFOLEVEL in MSB)
+ */
+
+ usc_OutReg( info, RICR, 0x0000 );
+
+ usc_UnlatchRxstatusBits( info, RXSTATUS_ALL );
+ usc_ClearIrqPendingBits( info, RECEIVE_STATUS );
+
+
+ /* Transmit mode Register (TMR)
+ *
+ * <15..13> 000 encoding = None
+ * <12..08> 00000 reserved (Sync Only)
+ * <7..6> 00 Transmit parity Even
+ * <5> 0 Transmit parity Disabled
+ * <4..2> 000 Tx Char Length = 8 bits
+ * <1..0> 00 Disable Transmitter
+ *
+ * 0000 0000 0000 0000 = 0x0
+ */
+
+ RegValue = 0;
+
+ if ( info->params.data_bits != 8 )
+ RegValue |= BIT4+BIT3+BIT2;
+
+ if ( info->params.parity != ASYNC_PARITY_NONE ) {
+ RegValue |= BIT5;
+ if ( info->params.parity != ASYNC_PARITY_ODD )
+ RegValue |= BIT6;
+ }
+
+ usc_OutReg( info, TMR, RegValue );
+


+ usc_set_txidle( info );
+

+
+ /* Set IRQ trigger level */
+
+ usc_TCmd( info, TCmd_SelectTicrIntLevel );
+
+
+ /* Transmit Interrupt Control Register (TICR)
+ *
+ * <15..8> ? Transmit FIFO IRQ Level
+ * <7> 0 Present IA (Interrupt Arm)
+ * <6> 1 Idle Sent IA
+ * <5> 0 Abort Sent IA
+ * <4> 0 EOF/EOM Sent IA
+ * <3> 0 CRC Sent IA
+ * <2> 0 1 = Wait for SW Trigger to Start Frame
+ * <1> 0 Tx Underrun IA
+ * <0> 0 TC0 constant on read back
+ *
+ * 0000 0000 0100 0000 = 0x0040
+ */
+
+ usc_OutReg( info, TICR, 0x1f40 );
+
+ usc_UnlatchTxstatusBits( info, TXSTATUS_ALL );
+ usc_ClearIrqPendingBits( info, TRANSMIT_STATUS );
+
+ usc_enable_async_clock( info, info->params.data_rate );
+
+
+ /* Channel Control/status Register (CCSR)
+ *
+ * <15> X RCC FIFO Overflow status (RO)
+ * <14> X RCC FIFO Not Empty status (RO)
+ * <13> 0 1 = Clear RCC FIFO (WO)
+ * <12> X DPLL in Sync status (RO)
+ * <11> X DPLL 2 Missed Clocks status (RO)
+ * <10> X DPLL 1 Missed Clock status (RO)
+ * <9..8> 00 DPLL Resync on rising and falling edges (RW)
+ * <7> X SDLC Loop On status (RO)
+ * <6> X SDLC Loop Send status (RO)
+ * <5> 1 Bypass counters for TxClk and RxClk (RW)
+ * <4..2> 000 Last Char of SDLC frame has 8 bits (RW)
+ * <1..0> 00 reserved
+ *
+ * 0000 0000 0010 0000 = 0x0020
+ */
+
+ usc_OutReg( info, CCSR, 0x0020 );
+
+ usc_DisableInterrupts( info, TRANSMIT_STATUS + TRANSMIT_DATA +
+ RECEIVE_DATA + RECEIVE_STATUS );
+
+ usc_ClearIrqPendingBits( info, TRANSMIT_STATUS + TRANSMIT_DATA +
+ RECEIVE_DATA + RECEIVE_STATUS );
+
+ usc_EnableMasterIrqBit( info );
+
+ /* Enable INTEN (Port 6, Bit12) */
+ /* This connects the IRQ request signal to the ISA bus */
+ /* on the ISA adapter. This has no effect for the PCI adapter */
+ usc_OutReg( info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) & ~BIT12) );
+
+} /* end of usc_set_async_mode() */
+
+/* usc_loopback_frame()
+ *
+ * Loop back a small (2 byte) dummy SDLC frame.
+ * Interrupts and DMA are NOT used. The purpose of this is to
+ * clear any 'stale' status info left over from running in async mode.
+ *
+ * The 16C32 shows the strange behaviour of marking the 1st
+ * received SDLC frame with a CRC error even when there is no
+ * CRC error. To get around this a small dummy from of 2 bytes
+ * is looped back when switching from async to sync mode.


+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: None
+ */

+void usc_loopback_frame( struct mgsl_struct *info )
+{
+ int i;
+
+ usc_DisableMasterIrqBit( info );
+
+ usc_set_sdlc_mode( info );
+ usc_enable_loopback( info, 1 );
+
+ /* Write 16-bit Time Constant for BRG0 */
+ usc_OutReg( info, TC0R, 0 );
+
+ /* Channel Control Register (CCR)
+ *
+ * <15..14> 00 Don't use 32-bit Tx Control Blocks (TCBs)
+ * <13> 0 Trigger Tx on SW Command Disabled
+ * <12> 0 Flag Preamble Disabled
+ * <11..10> 00 Preamble Length = 8-Bits
+ * <9..8> 01 Preamble Pattern = flags
+ * <7..6> 10 Don't use 32-bit Rx status Blocks (RSBs)
+ * <5> 0 Trigger Rx on SW Command Disabled
+ * <4..0> 0 reserved
+ *
+ * 0000 0001 0000 0000 = 0x0100
+ */
+
+ usc_OutReg( info, CCR, 0x0100 );
+
+ /* SETUP RECEIVER */
+ usc_RTCmd( info, RTCmd_PurgeRxFifo );
+ usc_EnableReceiver(info,ENABLE_UNCONDITIONAL);
+
+ /* SETUP TRANSMITTER */
+ /* Program the Transmit Character Length Register (TCLR) */
+ /* and clear FIFO (TCC is loaded with TCLR on FIFO clear) */
+ usc_OutReg( info, TCLR, 2 );
+ usc_RTCmd( info, RTCmd_PurgeTxFifo );
+
+ /* unlatch Tx status bits, and start transmit channel. */
+ usc_UnlatchTxstatusBits(info,TXSTATUS_ALL);
+ outw(0,info->io_base + DATAREG);
+
+ /* ENABLE TRANSMITTER */
+ usc_TCmd( info, TCmd_SendFrame );
+ usc_EnableTransmitter(info,ENABLE_UNCONDITIONAL);
+
+ /* WAIT FOR RECEIVE COMPLETE */
+ for (i=0 ; i<1000 ; i++)
+ if (usc_InReg( info, RCSR ) & (BIT8 + BIT4 + BIT3 + BIT1))
+ break;
+
+ /* clear Internal Data loopback mode */
+ usc_enable_loopback(info, 0);
+
+ usc_EnableMasterIrqBit(info);
+
+} /* end of usc_loopback_frame() */
+
+/* usc_set_sync_mode() Programs the USC for SDLC communications.
+ *
+ * Arguments: info pointer to adapter info structure


+ * Return Value: None
+ */

+void usc_set_sync_mode( struct mgsl_struct *info )
+{
+ usc_loopback_frame( info );
+ usc_set_sdlc_mode( info );
+
+ /* Enable INTEN (Port 6, Bit12) */
+ /* This connects the IRQ request signal to the ISA bus */
+ /* on the ISA adapter. This has no effect for the PCI adapter */
+ usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) & ~BIT12));
+
+ usc_enable_aux_clock(info, info->params.clock_speed);
+
+ if (info->params.loopback)
+ usc_enable_loopback(info,1);
+
+} /* end of mgsl_set_sync_mode() */
+
+/* usc_set_txidle() Set the HDLC idle mode for the transmitter.


+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: None
+ */

+void usc_set_txidle( struct mgsl_struct *info )
+{
+ u16 usc_idle_mode = IDLEMODE_FLAGS;
+
+ /* Map API idle mode to USC register bits */
+
+ switch( info->idle_mode ){
+ case HDLC_TXIDLE_FLAGS: usc_idle_mode = IDLEMODE_FLAGS; break;
+ case HDLC_TXIDLE_ALT_ZEROS_ONES: usc_idle_mode = IDLEMODE_ALT_ONE_ZERO; break;
+ case HDLC_TXIDLE_ZEROS: usc_idle_mode = IDLEMODE_ZERO; break;
+ case HDLC_TXIDLE_ONES: usc_idle_mode = IDLEMODE_ONE; break;
+ case HDLC_TXIDLE_ALT_MARK_SPACE: usc_idle_mode = IDLEMODE_ALT_MARK_SPACE; break;
+ case HDLC_TXIDLE_SPACE: usc_idle_mode = IDLEMODE_SPACE; break;
+ case HDLC_TXIDLE_MARK: usc_idle_mode = IDLEMODE_MARK; break;
+ }
+
+ info->usc_idle_mode = usc_idle_mode;
+ usc_OutReg(info, TCSR, usc_idle_mode);
+
+} /* end of usc_set_txidle() */
+
+/* usc_get_serial_signals()
+ *
+ * Query the adapter for the state of the V24 status (input) signals.


+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: None
+ */

+void usc_get_serial_signals( struct mgsl_struct *info )
+{
+ u16 status;
+
+ /* clear all serial signals except DTR and RTS */
+ info->serial_signals &= SerialSignal_DTR + SerialSignal_RTS;
+
+ /* Read the Misc Interrupt status Register (MISR) to get */
+ /* the V24 status signals. */
+
+ status = usc_InReg( info, MISR );
+
+ /* set serial signal bits to reflect MISR */
+
+ if ( status & MISCSTATUS_CTS )
+ info->serial_signals |= SerialSignal_CTS;
+
+ if ( status & MISCSTATUS_DCD )
+ info->serial_signals |= SerialSignal_DCD;
+
+ if ( status & MISCSTATUS_RI )
+ info->serial_signals |= SerialSignal_RI;
+
+ if ( status & MISCSTATUS_DSR )
+ info->serial_signals |= SerialSignal_DSR;
+
+} /* end of usc_get_serial_signals() */
+
+/* usc_set_serial_signals()
+ *
+ * Set the state of DTR and RTS based on contents of
+ * serial_signals member of device extension.


+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: None
+ */

+void usc_set_serial_signals( struct mgsl_struct *info )
+{
+ u16 Control;
+ unsigned char V24Out = info->serial_signals;
+
+ /* get the current value of the Port Control Register (PCR) */
+
+ Control = usc_InReg( info, PCR );
+
+ if ( V24Out & SerialSignal_RTS )
+ Control &= ~(BIT6);
+ else
+ Control |= BIT6;
+
+ if ( V24Out & SerialSignal_DTR )
+ Control &= ~(BIT4);
+ else
+ Control |= BIT4;
+
+ usc_OutReg( info, PCR, Control );
+
+} /* end of usc_set_serial_signals() */
+
+/* usc_enable_async_clock()
+ *
+ * Enable the async clock at the specified frequency.


+ *
+ * Arguments: info pointer to device instance data

+ * data_rate data rate of clock in bps
+ * 0 disables the AUX clock.


+ * Return Value: None
+ */

+void usc_enable_async_clock( struct mgsl_struct *info, u32 data_rate )
+{
+ if ( data_rate ) {
+ /*
+ * Clock mode Control Register (CMCR)
+ *
+ * <15..14> 00 counter 1 Disabled
+ * <13..12> 00 counter 0 Disabled
+ * <11..10> 11 BRG1 Input is TxC Pin
+ * <9..8> 11 BRG0 Input is TxC Pin
+ * <7..6> 01 DPLL Input is BRG1 Output
+ * <5..3> 100 TxCLK comes from BRG0
+ * <2..0> 100 RxCLK comes from BRG0
+ *
+ * 0000 1111 0110 0100 = 0x0f64
+ */
+
+ usc_OutReg( info, CMCR, 0x0f64 );
+
+
+ /*
+ * Write 16-bit Time Constant for BRG0
+ * Time Constant = (ClkSpeed / data_rate) - 1
+ * ClkSpeed = 921600 (ISA), 691200 (PCI)
+ */
+


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ usc_OutReg( info, TC0R, (u16)((691200/data_rate) - 1) );
+ else
+ usc_OutReg( info, TC0R, (u16)((921600/data_rate) - 1) );
+
+
+ /*
+ * Hardware Configuration Register (HCR)
+ * Clear Bit 1, BRG0 mode = Continuous
+ * Set Bit 0 to enable BRG0.
+ */
+
+ usc_OutReg( info, HCR,
+ (u16)((usc_InReg( info, HCR ) & ~BIT1) | BIT0) );
+
+
+ /* Input/Output Control Reg, <2..0> = 100, Drive RxC pin with BRG0 */
+
+ usc_OutReg( info, IOCR,
+ (u16)((usc_InReg(info, IOCR) & 0xfff8) | 0x0004) );
+ } else {
+ /* data rate == 0 so turn off BRG0 */
+ usc_OutReg( info, HCR, (u16)(usc_InReg( info, HCR ) & ~BIT0) );
+ }
+
+} /* end of usc_enable_async_clock() */
+
+/*
+ * Buffer Structures:
+ *
+ * Normal memory access uses virtual addresses that can make discontiguous
+ * physical memory pages appear to be contiguous in the virtual address
+ * space (the processors memory mapping handles the conversions).
+ *
+ * DMA transfers require physically contiguous memory. This is because
+ * the DMA system controller and DMA bus masters deal with memory using
+ * only physical addresses.
+ *
+ * This causes a problem under Windows NT when large DMA buffers are
+ * needed. Fragmentation of the nonpaged pool prevents allocations of
+ * physically contiguous buffers larger than the PAGE_SIZE.
+ *
+ * However the 16C32 supports Bus Master Scatter/Gather DMA which
+ * allows DMA transfers to physically discontiguous buffers. Information
+ * about each data transfer buffer is contained in a memory structure
+ * called a 'buffer entry'. A list of buffer entries is maintained
+ * to track and control the use of the data transfer buffers.
+ *
+ * To support this strategy we will allocate sufficient PAGE_SIZE
+ * contiguous memory buffers to allow for the total required buffer
+ * space.
+ *
+ * The 16C32 accesses the list of buffer entries using Bus Master
+ * DMA. Control information is read from the buffer entries by the
+ * 16C32 to control data transfers. status information is written to
+ * the buffer entries by the 16C32 to indicate the status of completed
+ * transfers.
+ *
+ * The CPU writes control information to the buffer entries to control
+ * the 16C32 and reads status information from the buffer entries to
+ * determine information about received and transmitted frames.
+ *
+ * Because the CPU and 16C32 (adapter) both need simultaneous access
+ * to the buffer entries, the buffer entry memory is allocated with
+ * HalAllocateCommonBuffer(). This restricts the size of the buffer
+ * entry list to PAGE_SIZE.
+ *
+ * The actual data buffers on the other hand will only be accessed
+ * by the CPU or the adapter but not by both simultaneously. This allows
+ * Scatter/Gather packet based DMA procedures for using physically
+ * discontiguous pages.
+ */
+
+/*
+ * mgsl_reset_rx_dma_buffers()
+ *
+ * Set the count for all receive buffers to DMABUFFERSIZE
+ * and set the current buffer to the first buffer. This effectively
+ * makes all buffers free and discards any data in buffers.


+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: None
+ */

+void mgsl_reset_rx_dma_buffers( struct mgsl_struct *info )


+{
+ unsigned int i;
+

+ for ( i = 0; i < info->rx_buffer_count; i++ ) {

+ *((unsigned long *)&(info->rx_buffer_list[i].count)) = DMABUFFERSIZE;
+// info->rx_buffer_list[i].count = DMABUFFERSIZE;
+// info->rx_buffer_list[i].status = 0;
+ }
+
+ info->current_rx_buffer = 0;
+
+} /* end of mgsl_reset_rx_dma_buffers() */
+
+/*
+ * mgsl_free_rx_frame_buffers()
+ *
+ * Free the receive buffers used by a received SDLC
+ * frame such that the buffers can be reused.


+ *
+ * Arguments:
+ *
+ * info pointer to device instance data

+ * StartIndex index of 1st receive buffer of frame
+ * EndIndex index of last receive buffer of frame
+ *

+ * Return Value: None
+ */

+void mgsl_free_rx_frame_buffers( struct mgsl_struct *info, unsigned int StartIndex, unsigned int EndIndex )
+{
+ int Done = 0;
+ DMABUFFERENTRY *pBufEntry;
+ unsigned int Index;
+
+ /* Starting with 1st buffer entry of the frame clear the status */
+ /* field and set the count field to DMA Buffer Size. */
+
+ Index = StartIndex;
+
+ while( !Done ) {
+ pBufEntry = &(info->rx_buffer_list[Index]);
+
+ if ( Index == EndIndex ) {
+ /* This is the last buffer of the frame! */
+ Done = 1;
+ }
+
+ /* reset current buffer for reuse */
+// pBufEntry->status = 0;
+// pBufEntry->count = DMABUFFERSIZE;
+ *((unsigned long *)&(pBufEntry->count)) = DMABUFFERSIZE;
+
+ /* advance to next buffer entry in linked list */
+ Index++;
+ if ( Index == info->rx_buffer_count )
+ Index = 0;
+ }
+
+ /* set current buffer to next buffer after last buffer of frame */
+ info->current_rx_buffer = Index;
+
+} /* end of free_rx_frame_buffers() */
+
+/* mgsl_get_rx_frame()
+ *
+ * This function attempts to return a received SDLC frame from the
+ * receive DMA buffers. Only frames received without errors are returned.


+ *
+ * Arguments: info pointer to device extension

+ * Return Value: 1 if frame returned, otherwise 0
+ */
+int mgsl_get_rx_frame(struct mgsl_struct *info)
+{
+ unsigned int StartIndex, EndIndex; /* index of 1st and last buffers of Rx frame */
+ unsigned short status;
+ DMABUFFERENTRY *pBufEntry;
+ unsigned int framesize;
+ int ReturnCode = 0;
+ unsigned long flags;
+ struct tty_struct *tty = info->tty;
+
+ /*
+ * current_rx_buffer points to the 1st buffer of the next available
+ * receive frame. To find the last buffer of the frame look for
+ * a non-zero status field in the buffer entries. (The status
+ * field is set by the 16C32 after completing a receive frame.
+ */
+
+ StartIndex = EndIndex = info->current_rx_buffer;
+
+ while( !info->rx_buffer_list[EndIndex].status ) {
+ /*
+ * If the count field of the buffer entry is non-zero then
+ * this buffer has not been used. (The 16C32 clears the count
+ * field when it starts using the buffer.) If an unused buffer
+ * is encountered then there are no frames available.
+ */
+
+ if ( info->rx_buffer_list[EndIndex].count )
+ goto Cleanup;
+
+ /* advance to next buffer entry in linked list */
+ EndIndex++;
+ if ( EndIndex == info->rx_buffer_count )
+ EndIndex = 0;
+
+ /* if entire list searched then no frame available */
+ if ( EndIndex == StartIndex ) {
+ /* If this occurs then something bad happened,
+ * all buffers have been 'used' but none mark
+ * the end of a frame. Reset buffers and receiver.
+ */
+
+ if ( info->rx_enabled ){
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_start_receiver(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+ goto Cleanup;
+ }
+ }
+
+
+ /* check status of receive frame */
+
+ status = info->rx_buffer_list[EndIndex].status;
+
+ if ( status & (RXSTATUS_SHORT_FRAME + RXSTATUS_OVERRUN +
+ RXSTATUS_CRC_ERROR + RXSTATUS_ABORT) ) {
+ if ( status & RXSTATUS_SHORT_FRAME )
+ info->icount.rxshort++;
+ else if ( status & RXSTATUS_ABORT )
+ info->icount.rxabort++;
+ else if ( status & RXSTATUS_OVERRUN )
+ info->icount.rxover++;
+ else
+ info->icount.rxcrc++;
+ framesize = 0;
+ } else {
+ /* receive frame has no errors, get frame size.
+ * The frame size is the starting value of the RCC (which was
+ * set to 0xffff) minus the ending value of the RCC (decremented
+ * once for each receive character) minus 2 for the 16-bit CRC.
+ */
+
+ framesize = RCLRVALUE - info->rx_buffer_list[EndIndex].rcc;
+
+ /* adjust frame size for CRC if any */
+ if ( info->params.crc_type == HDLC_CRC_16_CCITT )
+ framesize -= 2;
+ }
+
+ if ( debug_level >= DEBUG_LEVEL_BH )
+ printk("%s(%d):mgsl_get_rx_frame(%s) status=%04X size=%d\n",
+ __FILE__,__LINE__,info->device_name,status,framesize);
+
+ if ( debug_level >= DEBUG_LEVEL_DATA )
+ mgsl_trace_block(info,info->rx_buffer_list[StartIndex].virt_addr,
+ framesize,0);
+
+ if (framesize) {
+ if (framesize > HDLC_MAX_FRAME_SIZE)
+ info->icount.rxlong++;
+ else {
+ info->icount.rxok++;
+ pBufEntry = &(info->rx_buffer_list[StartIndex]);


SHAR_EOF
true || echo 'restore of patch-2.2.5 failed'
fi

echo 'End of part 5'
echo 'File patch-2.2.5 is continued in part 6'
echo 6 > _shar_seq_.tmp

Thomas...@ciw.uni-karlsruhe.de

unread,
Apr 5, 1999, 3:00:00 AM4/5/99
to
Archive-name: v2.2/patch-2.2.5/part6

#!/bin/sh
# this is part 6 of a 8 - part archive


# do not concatenate these parts, unpack them in order with /bin/sh
# file patch-2.2.5 continued
if test ! -r _shar_seq_.tmp; then
echo 'Please unpack part 1 first!'
exit 1
fi
(read Scheck

if test "$Scheck" != 6; then


echo Please unpack part "$Scheck" next!
exit 1
else
exit 0
fi
) < _shar_seq_.tmp || exit 1
if test ! -f _shar_wnt_.tmp; then
echo 'x - still skipping patch-2.2.5'
else
echo 'x - continuing with patch-2.2.5'
sed 's/^X//' << 'SHAR_EOF' >> 'patch-2.2.5' &&

+ /* Call the line discipline receive callback directly. */
+ tty->ldisc.receive_buf(tty, pBufEntry->virt_addr, info->flag_buf, framesize);
+ }
+ }
+ /* Free the buffers used by this frame. */
+ mgsl_free_rx_frame_buffers( info, StartIndex, EndIndex );
+
+ ReturnCode = 1;
+
+Cleanup:
+
+ if ( info->rx_enabled && info->rx_overflow ) {
+ /* The receiver needs to restarted because of
+ * a receive overflow (buffer or FIFO). If the
+ * receive buffers are now empty, then restart receiver.
+ */
+
+ if ( !info->rx_buffer_list[info->current_rx_buffer].status &&
+ info->rx_buffer_list[info->current_rx_buffer].count ) {


+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_start_receiver(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+ }

+
+ return ReturnCode;
+
+} /* end of mgsl_get_rx_frame() */
+
+/* mgsl_load_tx_dma_buffer()
+ *
+ * Load the transmit DMA buffer with the specified data.


+ *
+ * Arguments:
+ *
+ * info pointer to device extension

+ * Buffer pointer to buffer containing frame to load
+ * BufferSize size in bytes of frame in Buffer


+ *
+ * Return Value: None
+ */

+void mgsl_load_tx_dma_buffer(struct mgsl_struct *info, const char *Buffer,
+ unsigned int BufferSize)
+{
+ unsigned short Copycount;
+ unsigned int i = 0;
+ DMABUFFERENTRY *pBufEntry;
+

+ if ( debug_level >= DEBUG_LEVEL_DATA )

+ mgsl_trace_block(info,Buffer,BufferSize,1);
+
+ /* Setup the status and RCC (Frame Size) fields of the 1st */
+ /* buffer entry in the transmit DMA buffer list. */
+
+ info->tx_buffer_list[0].status = info->cmr_value & 0xf000;
+ info->tx_buffer_list[0].rcc = BufferSize;
+ info->tx_buffer_list[0].count = BufferSize;
+
+ /* Copy frame data from 1st source buffer to the DMA buffers. */
+ /* The frame data may span multiple DMA buffers. */
+
+ while( BufferSize ){
+ /* Get a pointer to next DMA buffer entry. */
+ pBufEntry = &info->tx_buffer_list[i++];
+
+ /* Calculate the number of bytes that can be copied from */
+ /* the source buffer to this DMA buffer. */
+ if ( BufferSize > DMABUFFERSIZE )
+ Copycount = DMABUFFERSIZE;
+ else
+ Copycount = BufferSize;
+
+ /* Actually copy data from source buffer to DMA buffer. */
+ /* Also set the data count for this individual DMA buffer. */


+ if ( info->bus_type == MGSL_BUS_TYPE_PCI )

+ mgsl_load_pci_memory(pBufEntry->virt_addr, Buffer,Copycount);
+ else
+ memcpy(pBufEntry->virt_addr, Buffer, Copycount);
+
+ pBufEntry->count = Copycount;
+
+ /* Advance source pointer and reduce remaining data count. */
+ Buffer += Copycount;
+ BufferSize -= Copycount;
+ }
+
+} /* end of mgsl_load_tx_dma_buffer() */
+
+/*
+ * mgsl_register_test()
+ *
+ * Performs a register test of the 16C32.


+ *
+ * Arguments: info pointer to device instance data

+ * Return Value: TRUE if test passed, otherwise FALSE
+ */
+BOOLEAN mgsl_register_test( struct mgsl_struct *info )
+{
+ static unsigned short BitPatterns[] =
+ { 0x0000, 0xffff, 0xaaaa, 0x5555, 0x1234, 0x6969, 0x9696, 0x0f0f };
+ static unsigned int Patterncount = sizeof(BitPatterns)/sizeof(unsigned short);
+ unsigned int i;
+ BOOLEAN rc = TRUE;


+ unsigned long flags;
+

+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_reset(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ /* Verify the reset state of some registers. */
+
+ if ( (usc_InReg( info, SICR ) != 0) ||
+ (usc_InReg( info, IVR ) != 0) ||
+ (usc_InDmaReg( info, DIVR ) != 0) ){
+ rc = FALSE;
+ }
+
+ if ( rc == TRUE ){
+ /* Write bit patterns to various registers but do it out of */
+ /* sync, then read back and verify values. */
+
+ for ( i = 0 ; i < Patterncount ; i++ ) {
+ usc_OutReg( info, TC0R, BitPatterns[i] );
+ usc_OutReg( info, TC1R, BitPatterns[(i+1)%Patterncount] );
+ usc_OutReg( info, TCLR, BitPatterns[(i+2)%Patterncount] );
+ usc_OutReg( info, RCLR, BitPatterns[(i+3)%Patterncount] );
+ usc_OutReg( info, RSR, BitPatterns[(i+4)%Patterncount] );
+ usc_OutDmaReg( info, TBCR, BitPatterns[(i+5)%Patterncount] );
+
+ if ( (usc_InReg( info, TC0R ) != BitPatterns[i]) ||
+ (usc_InReg( info, TC1R ) != BitPatterns[(i+1)%Patterncount]) ||
+ (usc_InReg( info, TCLR ) != BitPatterns[(i+2)%Patterncount]) ||
+ (usc_InReg( info, RCLR ) != BitPatterns[(i+3)%Patterncount]) ||
+ (usc_InReg( info, RSR ) != BitPatterns[(i+4)%Patterncount]) ||
+ (usc_InDmaReg( info, TBCR ) != BitPatterns[(i+5)%Patterncount]) ){
+ rc = FALSE;
+ break;
+ }
+ }
+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_reset(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ return rc;
+
+} /* end of mgsl_register_test() */
+
+/* mgsl_irq_test() Perform interrupt test of the 16C32.


+ *
+ * Arguments: info pointer to device instance data

+ * Return Value: TRUE if test passed, otherwise FALSE
+ */
+BOOLEAN mgsl_irq_test( struct mgsl_struct *info )
+{
+ unsigned long EndTime;


+ unsigned long flags;
+

+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_reset(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ /*
+ * Setup 16C32 to interrupt on TxC pin (14MHz clock) transition.
+ * The ISR sets irq_occurred to 1.
+ */
+
+ info->irq_occurred = FALSE;
+
+ /* Enable INTEN gate for ISA adapter (Port 6, Bit12) */


+ /* Enable INTEN (Port 6, Bit12) */
+ /* This connects the IRQ request signal to the ISA bus */
+ /* on the ISA adapter. This has no effect for the PCI adapter */

+ usc_OutReg( info, PCR, (unsigned short)((usc_InReg(info, PCR) | BIT13) & ~BIT12) );
+
+ usc_EnableMasterIrqBit(info);
+ usc_EnableInterrupts(info, IO_PIN);
+ usc_ClearIrqPendingBits(info, IO_PIN);
+
+ usc_UnlatchIostatusBits(info, MISCSTATUS_TXC_LATCHED);
+ usc_EnableStatusIrqs(info, SICR_TXC_ACTIVE + SICR_TXC_INACTIVE);
+
+ EndTime=100;
+ while( EndTime-- && !info->irq_occurred ) {


+ current->state = TASK_INTERRUPTIBLE;

+ schedule_timeout(jiffies_from_ms(10));


+ current->state = TASK_RUNNING;
+ }

+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_reset(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ if ( !info->irq_occurred )
+ return FALSE;
+ else
+ return TRUE;
+
+} /* end of mgsl_irq_test() */
+
+/* mgsl_dma_test()
+ *
+ * Perform a DMA test of the 16C32. A small frame is
+ * transmitted via DMA from a transmit buffer to a receive buffer
+ * using single buffer DMA mode.


+ *
+ * Arguments: info pointer to device instance data

+ * Return Value: TRUE if test passed, otherwise FALSE
+ */
+BOOLEAN mgsl_dma_test( struct mgsl_struct *info )
+{
+ unsigned short FifoLevel;
+ unsigned long phys_addr;
+ unsigned int FrameSize;
+ unsigned int i;
+ char *TmpPtr;
+ BOOLEAN rc = TRUE;
+ volatile unsigned short status;
+ volatile unsigned long EndTime;
+ unsigned long flags;
+ MGSL_PARAMS tmp_params;
+
+ /* save current port options */
+ memcpy(&tmp_params,&info->params,sizeof(MGSL_PARAMS));
+ /* load default port options */
+ memcpy(&info->params,&default_params,sizeof(MGSL_PARAMS));
+
+#define TESTFRAMESIZE 40


+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+

+ /* setup 16C32 for SDLC DMA transfer mode */
+
+ usc_reset(info);
+ usc_set_sdlc_mode(info);
+ usc_enable_loopback(info,1);
+
+ /* Reprogram the RDMR so that the 16C32 does NOT clear the count
+ * field of the buffer entry after fetching buffer address. This
+ * way we can detect a DMA failure for a DMA read (which should be
+ * non-destructive to system memory) before we try and write to
+ * memory (where a failure could corrupt system memory).
+ */
+


+ /* Receive DMA mode Register (RDMR)
+ *
+ * <15..14> 11 DMA mode = Linked List Buffer mode

+ * <13> 1 RSBinA/L = store Rx status Block in List entry
+ * <12> 0 1 = Clear count of List Entry after fetching


+ * <11..10> 00 Address mode = Increment
+ * <9> 1 Terminate Buffer on RxBound
+ * <8> 0 Bus Width = 16bits
+ * <7..0> ? status Bits (write as 0s)
+ *

+ * 1110 0010 0000 0000 = 0xe200
+ */
+
+ usc_OutDmaReg( info, RDMR, 0xe200 );
+

+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+

+ /* SETUP TRANSMIT AND RECEIVE DMA BUFFERS */
+
+ FrameSize = TESTFRAMESIZE;
+
+ /* setup 1st transmit buffer entry: */
+ /* with frame size and transmit control word */
+
+ info->tx_buffer_list[0].count = FrameSize;
+ info->tx_buffer_list[0].rcc = FrameSize;
+ info->tx_buffer_list[0].status = 0x4000;
+
+ /* build a transmit frame in 1st transmit DMA buffer */
+
+ TmpPtr = info->tx_buffer_list[0].virt_addr;
+ for (i = 0; i < FrameSize; i++ )
+ *TmpPtr++ = i;
+
+ /* setup 1st receive buffer entry: */
+ /* clear status, set max receive buffer size */
+
+ info->rx_buffer_list[0].status = 0;
+ info->rx_buffer_list[0].count = FrameSize + 4;
+
+ /* zero out the 1st receive buffer */
+
+ memset( info->rx_buffer_list[0].virt_addr, 0, FrameSize + 4 );
+
+ /* Set count field of next buffer entries to prevent */
+ /* 16C32 from using buffers after the 1st one. */
+
+ info->tx_buffer_list[1].count = 0;
+ info->rx_buffer_list[1].count = 0;
+
+
+ /***************************/
+ /* Program 16C32 receiver. */
+ /***************************/


+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+

+ /* setup DMA transfers */


+ usc_RTCmd( info, RTCmd_PurgeRxFifo );
+

+ /* program 16C32 receiver with physical address of 1st DMA buffer entry */


+ phys_addr = info->rx_buffer_list[0].phys_entry;

+ usc_OutDmaReg( info, NRARL, (unsigned short)phys_addr );
+ usc_OutDmaReg( info, NRARU, (unsigned short)(phys_addr >> 16) );
+
+ /* Clear the Rx DMA status bits (read RDMR) and start channel */


+ usc_InDmaReg( info, RDMR );

+ usc_DmaCmd( info, DmaCmd_InitRxChannel );
+

+ /* Enable Receiver (RMR <1..0> = 10) */
+ usc_OutReg( info, RMR, (unsigned short)((usc_InReg(info, RMR) & 0xfffc) | 0x0002) );
+

+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+

+ /*************************************************************/
+ /* WAIT FOR RECEIVER TO DMA ALL PARAMETERS FROM BUFFER ENTRY */
+ /*************************************************************/
+
+ /* Wait 100ms for interrupt. */
+ EndTime = jiffies + jiffies_from_ms(100);
+
+ for(;;) {
+ if ( jiffies > EndTime ) {
+ rc = FALSE;


+ break;
+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);

+ status = usc_InDmaReg( info, RDMR );
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ if ( !(status & BIT4) && (status & BIT5) ) {
+ /* INITG (BIT 4) is inactive (no entry read in progress) AND */
+ /* BUSY (BIT 5) is active (channel still active). */
+ /* This means the buffer entry read has completed. */
+ break;
+ }
+ }
+
+
+ /******************************/
+ /* Program 16C32 transmitter. */
+ /******************************/
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);


+
+ /* Program the Transmit Character Length Register (TCLR) */
+ /* and clear FIFO (TCC is loaded with TCLR on FIFO clear) */
+

+ usc_OutReg( info, TCLR, (unsigned short)info->tx_buffer_list[0].count );


+ usc_RTCmd( info, RTCmd_PurgeTxFifo );
+

+ /* Program the address of the 1st DMA Buffer Entry in linked list */
+
+ phys_addr = info->tx_buffer_list[0].phys_entry;

+ usc_OutDmaReg( info, NTARL, (unsigned short)phys_addr );
+ usc_OutDmaReg( info, NTARU, (unsigned short)(phys_addr >> 16) );


+
+ /* unlatch Tx status bits, and start transmit channel. */
+

+ usc_OutReg( info, TCSR, (unsigned short)(( usc_InReg(info, TCSR) & 0x0700) | 0xfa) );


+ usc_DmaCmd( info, DmaCmd_InitTxChannel );
+

+ /* wait for DMA controller to fill transmit FIFO */
+
+ usc_TCmd( info, TCmd_SelectTicrTxFifostatus );
+

+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+

+ /**********************************/
+ /* WAIT FOR TRANSMIT FIFO TO FILL */
+ /**********************************/
+
+ /* Wait 100ms */
+ EndTime = jiffies + jiffies_from_ms(100);
+
+ for(;;) {
+ if ( jiffies > EndTime ) {
+ rc = FALSE;


+ break;
+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);

+ FifoLevel = usc_InReg(info, TICR) >> 8;
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ if ( FifoLevel < 16 )
+ break;
+ else
+ if ( FrameSize < 32 ) {
+ /* This frame is smaller than the entire transmit FIFO */
+ /* so wait for the entire frame to be loaded. */
+ if ( FifoLevel <= (32 - FrameSize) )
+ break;
+ }
+ }
+
+
+ if ( rc == TRUE )
+ {
+ /* Enable 16C32 transmitter. */
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+
+ /* Transmit mode Register (TMR), <1..0> = 10, Enable Transmitter */


+ usc_TCmd( info, TCmd_SendFrame );

+ usc_OutReg( info, TMR, (unsigned short)((usc_InReg(info, TMR) & 0xfffc) | 0x0002) );
+

+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+

+ /******************************/
+ /* WAIT FOR TRANSMIT COMPLETE */
+ /******************************/
+
+ /* Wait 100ms */
+ EndTime = jiffies + jiffies_from_ms(100);
+
+ /* While timer not expired wait for transmit complete */
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ status = usc_InReg( info, TCSR );
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ while ( !(status & (BIT6+BIT5+BIT4+BIT2+BIT1)) ) {
+ if ( jiffies > EndTime ) {
+ rc = FALSE;


+ break;
+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);

+ status = usc_InReg( info, TCSR );


+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }
+ }

+
+
+ if ( rc == TRUE ){
+ /* CHECK FOR TRANSMIT ERRORS */
+ if ( status & (BIT5 + BIT1) )
+ rc = FALSE;
+ }
+
+ if ( rc == TRUE ) {


+ /* WAIT FOR RECEIVE COMPLETE */
+

+ /* Wait 100ms */
+ EndTime = jiffies + jiffies_from_ms(100);
+
+ /* Wait for 16C32 to write receive status to buffer entry. */
+ status=info->rx_buffer_list[0].status;
+ while ( status == 0 ) {
+ if ( jiffies > EndTime ) {
+ printk(KERN_ERR"mark 4\n");
+ rc = FALSE;
+ break;
+ }
+ status=info->rx_buffer_list[0].status;
+ }
+ }
+
+
+ if ( rc == TRUE ) {
+ /* CHECK FOR RECEIVE ERRORS */
+ status = info->rx_buffer_list[0].status;
+
+ if ( status & (BIT8 + BIT3 + BIT1) ) {
+ /* receive error has occured */
+ rc = FALSE;
+ } else {
+ if ( memcmp( info->tx_buffer_list[0].virt_addr ,
+ info->rx_buffer_list[0].virt_addr, FrameSize ) ){
+ rc = FALSE;
+ }
+ }
+ }
+
+ usc_reset( info );
+
+ /* restore current port options */
+ memcpy(&info->params,&tmp_params,sizeof(MGSL_PARAMS));
+
+ return rc;
+
+} /* end of mgsl_dma_test() */
+
+/* mgsl_adapter_test()
+ *
+ * Perform the register, IRQ, and DMA tests for the 16C32.


+ *
+ * Arguments: info pointer to device instance data

+ * Return Value: 0 if success, otherwise -ENODEV
+ */

+int mgsl_adapter_test( struct mgsl_struct *info )
+{


+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):Testing device %s\n",
+ __FILE__,__LINE__,info->device_name );
+
+ if ( !mgsl_register_test( info ) ) {
+ info->init_error = DiagStatus_AddressFailure;
+ printk( "%s(%d):Register test failure for device %s Addr=%04X\n",
+ __FILE__,__LINE__,info->device_name, (unsigned short)(info->io_base) );


+ return -ENODEV;
+ }
+

+ if ( !mgsl_irq_test( info ) ) {
+ info->init_error = DiagStatus_IrqFailure;
+ printk( "%s(%d):Interrupt test failure for device %s IRQ=%d\n",
+ __FILE__,__LINE__,info->device_name, (unsigned short)(info->irq_level) );


+ return -ENODEV;
+ }
+

+ if ( !mgsl_dma_test( info ) ) {
+ info->init_error = DiagStatus_DmaFailure;
+ printk( "%s(%d):DMA test failure for device %s DMA=%d\n",
+ __FILE__,__LINE__,info->device_name, (unsigned short)(info->dma_level) );


+ return -ENODEV;
+ }
+

+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):device %s passed diagnostics\n",
+ __FILE__,__LINE__,info->device_name );


+
+ return 0;
+

+} /* end of mgsl_adapter_test() */
+
+/* mgsl_memory_test()
+ *
+ * Test the shared memory on a PCI adapter.


+ *
+ * Arguments: info pointer to device instance data

+ * Return Value: TRUE if test passed, otherwise FALSE
+ */
+BOOLEAN mgsl_memory_test( struct mgsl_struct *info )
+{
+ static unsigned long BitPatterns[] = { 0x0, 0x55555555, 0xaaaaaaaa,
+ 0x66666666, 0x99999999, 0xffffffff, 0x12345678 };
+ unsigned long Patterncount = sizeof(BitPatterns)/sizeof(unsigned long);
+ unsigned long i;
+ unsigned long TestLimit = SHARED_MEM_ADDRESS_SIZE/sizeof(unsigned long);
+ unsigned long * TestAddr;
+
+ if ( info->bus_type != MGSL_BUS_TYPE_PCI )
+ return TRUE;
+
+ TestAddr = (unsigned long *)info->memory_base;
+
+ /* Test data lines with test pattern at one location. */
+
+ for ( i = 0 ; i < Patterncount ; i++ ) {
+ *TestAddr = BitPatterns[i];
+ if ( *TestAddr != BitPatterns[i] )
+ return FALSE;
+ }
+
+ /* Test address lines with incrementing pattern over */
+ /* entire address range. */
+
+ for ( i = 0 ; i < TestLimit ; i++ ) {
+ *TestAddr = i * 4;
+ TestAddr++;
+ }
+
+ TestAddr = (unsigned long *)info->memory_base;
+
+ for ( i = 0 ; i < TestLimit ; i++ ) {
+ if ( *TestAddr != i * 4 )
+ return FALSE;
+ TestAddr++;
+ }
+
+ memset( info->memory_base, 0, SHARED_MEM_ADDRESS_SIZE );
+
+ return TRUE;
+
+} /* End Of mgsl_memory_test() */
+
+
+#pragma optimize( "", off )
+/* mgsl_load_pci_memory()
+ *
+ * Load a large block of data into the PCI shared memory.
+ * Use this instead of memcpy() or memmove() to move data
+ * into the PCI shared memory.


+ *
+ * Notes:
+ *

+ * This function prevents the PCI9050 interface chip from hogging
+ * the adapter local bus, which can starve the 16C32 by preventing
+ * 16C32 bus master cycles.
+ *
+ * The PCI9050 documentation says that the 9050 will always release
+ * control of the local bus after completing the current read
+ * or write operation.
+ *
+ * It appears that as long as the PCI9050 write FIFO is full, the
+ * PCI9050 treats all of the writes as a single burst transaction
+ * and will not release the bus. This causes DMA latency problems
+ * at high speeds when copying large data blocks to the shared
+ * memory.
+ *
+ * This function in effect, breaks the a large shared memory write
+ * into multiple transations by interleaving a shared memory read
+ * which will flush the write FIFO and 'complete' the write
+ * transation. This allows any pending DMA request to gain control
+ * of the local bus in a timely fasion.


+ *
+ * Arguments:
+ *

+ * TargetPtr pointer to target address in PCI shared memory
+ * SourcePtr pointer to source buffer for data
+ * count count in bytes of data to copy


+ *
+ * Return Value: None
+ */

+void mgsl_load_pci_memory( char* TargetPtr, const char* SourcePtr,
+ unsigned short count )
+{
+ /*******************************************************/
+ /* A load interval of 16 allows for 4 32-bit writes at */
+ /* 60ns each for a maximum latency of 240ns on the */
+ /* local bus. */
+ /*******************************************************/
+
+#define PCI_LOAD_INTERVAL 64
+
+ unsigned short Intervalcount = count / PCI_LOAD_INTERVAL;
+ unsigned short Index;
+ unsigned long Dummy;
+
+ for ( Index = 0 ; Index < Intervalcount ; Index++ )
+ {
+ memcpy(TargetPtr, SourcePtr, PCI_LOAD_INTERVAL);
+ Dummy = *((unsigned long *)TargetPtr);
+ TargetPtr += PCI_LOAD_INTERVAL;
+ SourcePtr += PCI_LOAD_INTERVAL;
+ }
+
+ memcpy( TargetPtr, SourcePtr, count % PCI_LOAD_INTERVAL );
+
+} /* End Of mgsl_load_pci_memory() */
+#pragma optimize( "", on )
+
+void mgsl_trace_block(struct mgsl_struct *info,const char* data, int count, int xmit)
+{
+ int i;
+ int linecount;
+ if (xmit)
+ printk("%s tx data:\n",info->device_name);
+ else
+ printk("%s rx data:\n",info->device_name);
+
+ while(count) {
+ if (count > 16)
+ linecount = 16;
+ else
+ linecount = count;
+
+ for(i=0;i<linecount;i++)
+ printk("%02X ",(unsigned char)data[i]);
+ for(;i<17;i++)
+ printk(" ");
+ for(i=0;i<linecount;i++) {
+ if (data[i]>=040 && data[i]<=0176)
+ printk("%c",data[i]);
+ else
+ printk(".");
+ }
+ printk("\n");
+
+ data += linecount;
+ count -= linecount;
+ }
+} /* end of mgsl_trace_block() */
+
+/* mgsl_tx_timeout()
+ *
+ * called when HDLC frame times out
+ * update stats and do tx completion processing
+ *
+ * Arguments: context pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_tx_timeout(unsigned long context)
+{
+ struct mgsl_struct *info = (struct mgsl_struct*)context;


+ unsigned long flags;
+

+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):mgsl_tx_timeout(%s)\n",
+ __FILE__,__LINE__,info->device_name);
+ if(info->tx_active && info->params.mode == MGSL_MODE_HDLC) {
+ info->icount.txtimeout++;


+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);

+ info->tx_active = 0;

+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ mgsl_bh_transmit_data(info,0);
+
+} /* end of mgsl_tx_timeout() */
+
diff -u --recursive --new-file v2.2.4/linux/drivers/fc4/soc.c linux/drivers/fc4/soc.c
--- v2.2.4/linux/drivers/fc4/soc.c Tue Mar 23 14:35:47 1999
+++ linux/drivers/fc4/soc.c Fri Mar 26 13:57:41 1999
@@ -41,7 +41,6 @@
X #include <asm/openprom.h>
X #include <asm/oplib.h>
X #include <asm/auxio.h>
-#include <asm/system.h>
X #include <asm/pgtable.h>
X #include <asm/irq.h>
X
diff -u --recursive --new-file v2.2.4/linux/drivers/fc4/socal.c linux/drivers/fc4/socal.c
--- v2.2.4/linux/drivers/fc4/socal.c Tue Mar 23 14:35:47 1999
+++ linux/drivers/fc4/socal.c Sun Mar 28 09:07:47 1999
@@ -73,6 +73,7 @@
X }
X }
X
+#ifdef HAVE_SOCAL_UCODE
X static void socal_bzero(void *d, int size)
X {
X u32 *dp = (u32 *)d;
@@ -81,6 +82,7 @@
X size -= sizeof(u32);
X }
X }
+#endif
X
X static inline void socal_disable(struct socal *s)
X {
diff -u --recursive --new-file v2.2.4/linux/drivers/net/hamradio/baycom_epp.c linux/drivers/net/hamradio/baycom_epp.c
--- v2.2.4/linux/drivers/net/hamradio/baycom_epp.c Tue Feb 23 15:21:33 1999
+++ linux/drivers/net/hamradio/baycom_epp.c Fri Mar 26 13:57:41 1999
@@ -48,7 +48,6 @@
X #include <linux/string.h>
X #include <linux/parport.h>
X #include <linux/bitops.h>
-#include <linux/sched.h>
X #include <asm/system.h>
X #include <asm/io.h>
X #include <asm/processor.h>
diff -u --recursive --new-file v2.2.4/linux/drivers/net/myri_sbus.c linux/drivers/net/myri_sbus.c
--- v2.2.4/linux/drivers/net/myri_sbus.c Tue Mar 23 14:35:47 1999
+++ linux/drivers/net/myri_sbus.c Fri Mar 26 13:57:41 1999
@@ -34,7 +34,6 @@
X #include <asm/openprom.h>
X #include <asm/oplib.h>
X #include <asm/auxio.h>
-#include <asm/system.h>
X #include <asm/pgtable.h>
X #include <asm/irq.h>
X
diff -u --recursive --new-file v2.2.4/linux/drivers/sbus/char/sab82532.c linux/drivers/sbus/char/sab82532.c
--- v2.2.4/linux/drivers/sbus/char/sab82532.c Tue Mar 23 14:35:48 1999
+++ linux/drivers/sbus/char/sab82532.c Thu Mar 25 09:23:34 1999
@@ -1,4 +1,4 @@
-/* $Id: sab82532.c,v 1.28 1999/01/02 16:47:35 davem Exp $
+/* $Id: sab82532.c,v 1.30 1999/03/24 11:34:52 davem Exp $
X * sab82532.c: ASYNC Driver for the SIEMENS SAB82532 DUSCC.


X *
X * Copyright (C) 1997 Eddie C. Dost (e...@skynet.be)

@@ -2136,7 +2136,7 @@
X
X __initfunc(static inline void show_serial_version(void))
X {
- char *revision = "$Revision: 1.28 $";
+ char *revision = "$Revision: 1.30 $";
X char *version, *p;
X
X version = strchr(revision, ' ');
@@ -2359,8 +2359,10 @@
X restore_flags(flags);
X
X for (i = 0; i < NR_PORTS; i++) {
- if (sab82532_table[i].type != PORT_UNKNOWN)
- release_region(sab82532_table[i].port, 8);
+ struct sab82532 *info = (struct sab82532 *)sab82532_table[i]->driver_data;
+ if (info->type != PORT_UNKNOWN)
+ release_region((unsigned long)info->regs,
+ sizeof(union sab82532_async_regs));
X }
X if (tmp_buf) {
X free_page((unsigned long) tmp_buf);
diff -u --recursive --new-file v2.2.4/linux/drivers/scsi/ppa.c linux/drivers/scsi/ppa.c
--- v2.2.4/linux/drivers/scsi/ppa.c Wed Jan 13 15:00:42 1999
+++ linux/drivers/scsi/ppa.c Fri Mar 26 13:57:41 1999
@@ -48,7 +48,6 @@
X }
X
X #include "ppa.h"
-#include <linux/parport.h>
X
X #define NO_HOSTS 4
X static ppa_struct ppa_hosts[NO_HOSTS] =
diff -u --recursive --new-file v2.2.4/linux/drivers/sound/es1370.c linux/drivers/sound/es1370.c
--- v2.2.4/linux/drivers/sound/es1370.c Tue Mar 23 14:35:48 1999
+++ linux/drivers/sound/es1370.c Fri Mar 26 14:52:34 1999
@@ -83,6 +83,10 @@
X * 16.12.98 0.16 Don't wake up app until there are fragsize bytes to read/write
X * 06.01.99 0.17 remove the silly SA_INTERRUPT flag.
X * hopefully killed the egcs section type conflict
+ * 12.03.99 0.18 cinfo.blocks should be reset after GETxPTR ioctl.
+ * reported by Johan Maes <jo...@telindus.be>
+ * 22.03.99 0.19 return EAGAIN instead of EBUSY when O_NONBLOCK
+ * read/write cannot be executed
X *
X * some important things missing in Ensoniq documentation:
X *
@@ -1097,7 +1101,7 @@
X if (cnt <= 0) {
X start_adc(s);
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->dma_adc.wait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -1152,7 +1156,7 @@
X if (cnt <= 0) {
X start_dac2(s);
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->dma_dac2.wait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -1455,7 +1459,7 @@
X spin_lock_irqsave(&s->lock, flags);
X es1370_update_ptr(s);
X cinfo.bytes = s->dma_adc.total_bytes;
- cinfo.blocks = s->dma_adc.total_bytes >> s->dma_adc.fragshift;
+ cinfo.blocks = s->dma_adc.count >> s->dma_adc.fragshift;
X cinfo.ptr = s->dma_adc.hwptr;
X if (s->dma_adc.mapped)
X s->dma_adc.count &= s->dma_adc.fragsize-1;
@@ -1468,7 +1472,7 @@
X spin_lock_irqsave(&s->lock, flags);
X es1370_update_ptr(s);
X cinfo.bytes = s->dma_dac2.total_bytes;
- cinfo.blocks = s->dma_dac2.total_bytes >> s->dma_dac2.fragshift;
+ cinfo.blocks = s->dma_dac2.count >> s->dma_dac2.fragshift;
X cinfo.ptr = s->dma_dac2.hwptr;
X if (s->dma_dac2.mapped)
X s->dma_dac2.count &= s->dma_dac2.fragsize-1;
@@ -1664,7 +1668,7 @@
X if (cnt <= 0) {
X start_dac1(s);
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->dma_dac1.wait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -1866,7 +1870,7 @@
X spin_lock_irqsave(&s->lock, flags);
X es1370_update_ptr(s);
X cinfo.bytes = s->dma_dac1.total_bytes;
- cinfo.blocks = s->dma_dac1.total_bytes >> s->dma_dac1.fragshift;
+ cinfo.blocks = s->dma_dac1.count >> s->dma_dac1.fragshift;
X cinfo.ptr = s->dma_dac1.hwptr;
X if (s->dma_dac1.mapped)
X s->dma_dac1.count &= s->dma_dac1.fragsize-1;
@@ -2021,7 +2025,7 @@
X cnt = count;
X if (cnt <= 0) {
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->midi.iwait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -2068,7 +2072,7 @@
X cnt = count;
X if (cnt <= 0) {
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->midi.owait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -2271,7 +2275,7 @@
X
X if (!pci_present()) /* No PCI bus in this machine! */
X return -ENODEV;
- printk(KERN_INFO "es1370: version v0.17 time " __TIME__ " " __DATE__ "\n");
+ printk(KERN_INFO "es1370: version v0.19 time " __TIME__ " " __DATE__ "\n");
X while (index < NR_DEVICE &&
X (pcidev = pci_find_device(PCI_VENDOR_ID_ENSONIQ, PCI_DEVICE_ID_ENSONIQ_ES1370, pcidev))) {
X if (pcidev->base_address[0] == 0 ||
diff -u --recursive --new-file v2.2.4/linux/drivers/sound/es1371.c linux/drivers/sound/es1371.c
--- v2.2.4/linux/drivers/sound/es1371.c Wed Mar 10 15:29:47 1999
+++ linux/drivers/sound/es1371.c Fri Mar 26 14:52:34 1999
@@ -54,6 +54,10 @@
X * Don't wake up app until there are fragsize bytes to read/write
X * 06.01.99 0.8 remove the silly SA_INTERRUPT flag.
X * hopefully killed the egcs section type conflict
+ * 12.03.99 0.9 cinfo.blocks should be reset after GETxPTR ioctl.
+ * reported by Johan Maes <jo...@telindus.be>
+ * 22.03.99 0.10 return EAGAIN instead of EBUSY when O_NONBLOCK
+ * read/write cannot be executed
X *
X */
X
@@ -1542,7 +1546,7 @@
X if (cnt <= 0) {
X start_adc(s);
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->dma_adc.wait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -1597,7 +1601,7 @@
X if (cnt <= 0) {
X start_dac2(s);
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->dma_dac2.wait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -1897,7 +1901,7 @@
X spin_lock_irqsave(&s->lock, flags);
X es1371_update_ptr(s);
X cinfo.bytes = s->dma_adc.total_bytes;
- cinfo.blocks = s->dma_adc.total_bytes >> s->dma_adc.fragshift;
+ cinfo.blocks = s->dma_adc.count >> s->dma_adc.fragshift;
X cinfo.ptr = s->dma_adc.hwptr;
X if (s->dma_adc.mapped)
X s->dma_adc.count &= s->dma_adc.fragsize-1;
@@ -1910,7 +1914,7 @@
X spin_lock_irqsave(&s->lock, flags);
X es1371_update_ptr(s);
X cinfo.bytes = s->dma_dac2.total_bytes;
- cinfo.blocks = s->dma_dac2.total_bytes >> s->dma_dac2.fragshift;
+ cinfo.blocks = s->dma_dac2.count >> s->dma_dac2.fragshift;
X cinfo.ptr = s->dma_dac2.hwptr;
X if (s->dma_dac2.mapped)
X s->dma_dac2.count &= s->dma_dac2.fragsize-1;
@@ -2108,7 +2112,7 @@
X if (cnt <= 0) {
X start_dac1(s);
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->dma_dac1.wait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -2301,7 +2305,7 @@
X spin_lock_irqsave(&s->lock, flags);
X es1371_update_ptr(s);
X cinfo.bytes = s->dma_dac1.total_bytes;
- cinfo.blocks = s->dma_dac1.total_bytes >> s->dma_dac1.fragshift;
+ cinfo.blocks = s->dma_dac1.count >> s->dma_dac1.fragshift;
X cinfo.ptr = s->dma_dac1.hwptr;
X if (s->dma_dac1.mapped)
X s->dma_dac1.count &= s->dma_dac1.fragsize-1;
@@ -2455,7 +2459,7 @@
X cnt = count;
X if (cnt <= 0) {
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->midi.iwait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -2502,7 +2506,7 @@
X cnt = count;
X if (cnt <= 0) {
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->midi.owait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -2708,7 +2712,7 @@
X
X if (!pci_present()) /* No PCI bus in this machine! */
X return -ENODEV;
- printk(KERN_INFO "es1371: version v0.8 time " __TIME__ " " __DATE__ "\n");
+ printk(KERN_INFO "es1371: version v0.10 time " __TIME__ " " __DATE__ "\n");
X while (index < NR_DEVICE &&
X (pcidev = pci_find_device(PCI_VENDOR_ID_ENSONIQ, PCI_DEVICE_ID_ENSONIQ_ES1371, pcidev))) {
X if (pcidev->base_address[0] == 0 ||
diff -u --recursive --new-file v2.2.4/linux/drivers/sound/sonicvibes.c linux/drivers/sound/sonicvibes.c
--- v2.2.4/linux/drivers/sound/sonicvibes.c Wed Mar 10 15:29:47 1999
+++ linux/drivers/sound/sonicvibes.c Fri Mar 26 14:52:34 1999
@@ -51,6 +51,10 @@
X * 16.12.98 0.9 Fix a few f_file & FMODE_ bugs
X * 06.01.99 0.10 remove the silly SA_INTERRUPT flag.
X * hopefully killed the egcs section type conflict
+ * 12.03.99 0.11 cinfo.blocks should be reset after GETxPTR ioctl.
+ * reported by Johan Maes <jo...@telindus.be>
+ * 22.03.99 0.12 return EAGAIN instead of EBUSY when O_NONBLOCK
+ * read/write cannot be executed
X *
X */
X
@@ -1293,7 +1297,7 @@
X if (cnt <= 0) {
X start_adc(s);
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->dma_adc.wait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -1353,7 +1357,7 @@
X if (cnt <= 0) {
X start_dac(s);
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->dma_dac.wait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -1646,7 +1650,7 @@
X spin_lock_irqsave(&s->lock, flags);
X sv_update_ptr(s);
X cinfo.bytes = s->dma_adc.total_bytes;
- cinfo.blocks = s->dma_adc.total_bytes >> s->dma_adc.fragshift;
+ cinfo.blocks = s->dma_adc.count >> s->dma_adc.fragshift;
X cinfo.ptr = s->dma_adc.hwptr;
X if (s->dma_adc.mapped)
X s->dma_adc.count &= s->dma_adc.fragsize-1;
@@ -1659,7 +1663,7 @@
X spin_lock_irqsave(&s->lock, flags);
X sv_update_ptr(s);
X cinfo.bytes = s->dma_dac.total_bytes;
- cinfo.blocks = s->dma_dac.total_bytes >> s->dma_dac.fragshift;
+ cinfo.blocks = s->dma_dac.count >> s->dma_dac.fragshift;
X cinfo.ptr = s->dma_dac.hwptr;
X if (s->dma_dac.mapped)
X s->dma_dac.count &= s->dma_dac.fragsize-1;
@@ -1839,7 +1843,7 @@
X cnt = count;
X if (cnt <= 0) {
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->midi.iwait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -1886,7 +1890,7 @@
X cnt = count;
X if (cnt <= 0) {
X if (file->f_flags & O_NONBLOCK)
- return ret ? ret : -EBUSY;
+ return ret ? ret : -EAGAIN;
X interruptible_sleep_on(&s->midi.owait);
X if (signal_pending(current))
X return ret ? ret : -ERESTARTSYS;
@@ -2271,7 +2275,7 @@
X
X if (!pci_present()) /* No PCI bus in this machine! */
X return -ENODEV;
- printk(KERN_INFO "sv: version v0.10 time " __TIME__ " " __DATE__ "\n");
+ printk(KERN_INFO "sv: version v0.12 time " __TIME__ " " __DATE__ "\n");
X #if 0
X if (!(wavetable_mem = __get_free_pages(GFP_KERNEL, 20-PAGE_SHIFT)))
X printk(KERN_INFO "sv: cannot allocate 1MB of contiguous nonpageable memory for wavetable data\n");
diff -u --recursive --new-file v2.2.4/linux/drivers/video/fbcon.c linux/drivers/video/fbcon.c
--- v2.2.4/linux/drivers/video/fbcon.c Wed Mar 10 15:29:48 1999
+++ linux/drivers/video/fbcon.c Sun Mar 28 09:07:47 1999
@@ -1587,7 +1587,7 @@
X if (CON_IS_VISIBLE(conp) && softback_buf) {
X int l = fbcon_softback_size / conp->vc_size_row;
X if (l > 5)
- softback_end += l * conp->vc_size_row;
+ softback_end = softback_buf + l * conp->vc_size_row;
X else {
X /* Smaller scrollback makes no sense, and 0 would screw
X the operation totally */
diff -u --recursive --new-file v2.2.4/linux/fs/adfs/inode.c linux/fs/adfs/inode.c
--- v2.2.4/linux/fs/adfs/inode.c Fri Jan 30 11:28:08 1998
+++ linux/fs/adfs/inode.c Fri Mar 26 13:57:41 1999
@@ -27,7 +27,7 @@
X #define inode_dirindex(idx) (((idx) & 0xff) * 26 - 21)
X
X #define frag_id(x) (((x) >> 8) & 0x7fff)
-#define off(x) (((x) & 0xff) ? ((x) & 0xff) - 1 : 0)
+#define off(x) (((x) & 0xff) ? (((x) & 0xff) - 1) << sb->u.adfs_sb.s_dr->log2sharesize : 0)
X
X static inline int adfs_inode_validate_no (struct super_block *sb, unsigned int inode_no)
X {
@@ -83,11 +83,20 @@
X return 0;
X }
X
+ if (block < 0) {
+ adfs_error(sb, "adfs_bmap", "block(%d) < 0", block);


+ return 0;
+ }
+

+ if (block > inode->i_blocks)
+ return 0;
+
+ block += off(inode->u.adfs_i.file_id);
+
X if (frag_id(inode->u.adfs_i.file_id) == ADFS_ROOT_FRAG)
- blk = sb->u.adfs_sb.s_map_block + off(inode_frag (inode->i_ino)) + block;
+ blk = sb->u.adfs_sb.s_map_block + block;
X else
- blk = adfs_map_lookup (sb, frag_id(inode->u.adfs_i.file_id),
- off (inode->u.adfs_i.file_id) + block);
+ blk = adfs_map_lookup (sb, frag_id(inode->u.adfs_i.file_id), block);
X return blk;
X }
X
@@ -105,13 +114,13 @@
X
X fragment = inode_frag (inode->i_ino);
X if (frag_id (fragment) == ADFS_ROOT_FRAG)
- blk = sb->u.adfs_sb.s_map_block + off (fragment) + block;
+ blk = sb->u.adfs_sb.s_map_block + off(fragment) + block;
X else
- blk = adfs_map_lookup (sb, frag_id (fragment), off (fragment) + block);
+ blk = adfs_map_lookup (sb, frag_id (fragment), off(fragment) + block);
X return blk;
X }
X
-static int adfs_atts2mode (unsigned char mode, unsigned int filetype)
+static int adfs_atts2mode(struct super_block *sb, unsigned char mode, unsigned int filetype)
X {
X int omode = 0;
X
@@ -120,24 +129,29 @@
X S_IRGRP|S_IWGRP|S_IXGRP|
X S_IROTH|S_IWOTH|S_IXOTH;
X } else {
- if (mode & ADFS_NDA_DIRECTORY)
- omode |= S_IFDIR|S_IRUSR|S_IXUSR|S_IXGRP|S_IXOTH;
- else
+ if (mode & ADFS_NDA_DIRECTORY) {
+ omode |= S_IRUGO & sb->u.adfs_sb.s_owner_mask;
+ omode |= S_IFDIR|S_IXUSR|S_IXGRP|S_IXOTH;
+ } else
X omode |= S_IFREG;
+
X if (mode & ADFS_NDA_OWNER_READ) {
- omode |= S_IRUSR;
+ omode |= S_IRUGO & sb->u.adfs_sb.s_owner_mask;
X if (filetype == 0xfe6 /* UnixExec */)
- omode |= S_IXUSR;
+ omode |= S_IXUGO & sb->u.adfs_sb.s_owner_mask;
X }
+
X if (mode & ADFS_NDA_OWNER_WRITE)
- omode |= S_IWUSR;
+ omode |= S_IWUGO & sb->u.adfs_sb.s_owner_mask;
+
X if (mode & ADFS_NDA_PUBLIC_READ) {
- omode |= S_IRGRP | S_IROTH;
- if (filetype == 0xfe6)
- omode |= S_IXGRP | S_IXOTH;
+ omode |= S_IRUGO & sb->u.adfs_sb.s_other_mask;
+ if (filetype == 0xfe6 /* UnixExec */)
+ omode |= S_IXUGO & sb->u.adfs_sb.s_other_mask;
X }
+
X if (mode & ADFS_NDA_PUBLIC_WRITE)
- omode |= S_IWGRP | S_IWOTH;
+ omode |= S_IWUGO & sb->u.adfs_sb.s_other_mask;
X }
X return omode;
X }
@@ -150,8 +164,8 @@
X int buffers;
X
X sb = inode->i_sb;
- inode->i_uid = 0;
- inode->i_gid = 0;
+ inode->i_uid = sb->u.adfs_sb.s_uid;
+ inode->i_gid = sb->u.adfs_sb.s_gid;
X inode->i_version = ++event;
X
X if (adfs_inode_validate_no (sb, inode->i_ino & 0xffffff00)) {
@@ -186,7 +200,7 @@
X goto bad;
X }
X adfs_dir_free (bh, buffers);
- inode->i_mode = adfs_atts2mode (ide.mode, ide.filetype);
+ inode->i_mode = adfs_atts2mode(sb, ide.mode, ide.filetype);
X inode->i_nlink = 2;
X inode->i_size = ide.size;
X inode->i_blksize = PAGE_SIZE;
@@ -204,13 +218,5 @@
X return;
X
X bad:
- inode->i_mode = 0;
- inode->i_nlink = 1;
- inode->i_size = 0;
- inode->i_blksize = 0;
- inode->i_blocks = 0;
- inode->i_mtime =
- inode->i_atime =
- inode->i_ctime = 0;
- inode->i_op = NULL;
+ make_bad_inode(inode);
X }
diff -u --recursive --new-file v2.2.4/linux/fs/adfs/super.c linux/fs/adfs/super.c
--- v2.2.4/linux/fs/adfs/super.c Mon Apr 6 17:41:00 1998
+++ linux/fs/adfs/super.c Fri Mar 26 13:57:41 1999
@@ -21,25 +21,26 @@
X
X #include <stdarg.h>
X
-static void adfs_put_super (struct super_block *sb);
-static int adfs_statfs (struct super_block *sb, struct statfs *buf, int bufsiz);
-void adfs_read_inode (struct inode *inode);
+static void adfs_put_super(struct super_block *sb);
+static int adfs_remount(struct super_block *sb, int *flags, char *data);
+static int adfs_statfs(struct super_block *sb, struct statfs *buf, int bufsiz);
+void adfs_read_inode(struct inode *inode);
X
-void adfs_error (struct super_block *sb, const char *function, const char *fmt, ...)
+void adfs_error(struct super_block *sb, const char *function, const char *fmt, ...)
X {
X char error_buf[128];
X va_list args;
X
- va_start (args, fmt);
- vsprintf (error_buf, fmt, args);
- va_end (args);
+ va_start(args, fmt);
+ vsprintf(error_buf, fmt, args);
+ va_end(args);
X
- printk (KERN_CRIT "ADFS-fs error (device %s)%s%s: %s\n",
- kdevname (sb->s_dev), function ? ": " : "",
+ printk(KERN_CRIT "ADFS-fs error (device %s)%s%s: %s\n",
+ kdevname(sb->s_dev), function ? ": " : "",
X function ? function : "", error_buf);
X }
X
-unsigned char adfs_calccrosscheck (struct super_block *sb, char *map)
+static unsigned char adfs_calczonecheck(struct super_block *sb, char *map)
X {
X unsigned int v0, v1, v2, v3;
X int i;
@@ -63,7 +64,7 @@
X return v0 ^ v1 ^ v2 ^ v3;
X }
X
-static int adfs_checkmap (struct super_block *sb)
+static int adfs_checkmap(struct super_block *sb)
X {
X unsigned char crosscheck = 0, zonecheck = 1;
X int i;
@@ -72,14 +73,14 @@
X char *map;
X
X map = sb->u.adfs_sb.s_map[i]->b_data;
- if (adfs_calccrosscheck (sb, map) != map[0]) {
- adfs_error (sb, "adfs_checkmap", "zone %d fails zonecheck", i);
+ if (adfs_calczonecheck(sb, map) != map[0]) {
+ adfs_error(sb, "adfs_checkmap", "zone %d fails zonecheck", i);
X zonecheck = 0;
X }
X crosscheck ^= map[3];
X }
X if (crosscheck != 0xff)
- adfs_error (sb, "adfs_checkmap", "crosscheck != 0xff");
+ adfs_error(sb, "adfs_checkmap", "crosscheck != 0xff");
X return crosscheck == 0xff && zonecheck;
X }
X
@@ -92,21 +93,73 @@
X adfs_put_super,
X NULL,
X adfs_statfs,
- NULL
+ adfs_remount
X };
X
-static void adfs_put_super (struct super_block *sb)
+static void adfs_put_super(struct super_block *sb)
X {
X int i;
X
X for (i = 0; i < sb->u.adfs_sb.s_map_size; i++)
- brelse (sb->u.adfs_sb.s_map[i]);
- kfree (sb->u.adfs_sb.s_map);
- brelse (sb->u.adfs_sb.s_sbh);
+ brelse(sb->u.adfs_sb.s_map[i]);
+ kfree(sb->u.adfs_sb.s_map);
+ brelse(sb->u.adfs_sb.s_sbh);
X MOD_DEC_USE_COUNT;
X }
X
-struct super_block *adfs_read_super (struct super_block *sb, void *data, int silent)
+static int parse_options(struct super_block *sb, char *options)
+{
+ char *value, *opt;
+
+ if (!options)
+ return 0;
+
+ for (opt = strtok(options, ","); opt != NULL; opt = strtok(NULL, ",")) {
+ value = strchr(opt, '=');
+ if (value)
+ *value++ = '\0';
+
+ if (!strcmp(opt, "uid")) { /* owner of all files */
+ if (!value || !*value)
+ return -EINVAL;
+ sb->u.adfs_sb.s_uid = simple_strtoul(value, &value, 0);
+ if (*value)
+ return -EINVAL;
+ } else
+ if (!strcmp(opt, "gid")) { /* group owner of all files */
+ if (!value || !*value)
+ return -EINVAL;
+ sb->u.adfs_sb.s_gid = simple_strtoul(value, &value, 0);
+ if (*value)
+ return -EINVAL;
+ } else
+ if (!strcmp(opt, "ownmask")) { /* owner permission mask */
+ if (!value || !*value)
+ return -EINVAL;
+ sb->u.adfs_sb.s_owner_mask = simple_strtoul(value, &value, 8);
+ if (*value)
+ return -EINVAL;
+ } else
+ if (!strcmp(opt, "othmask")) { /* others permission mask */
+ if (!value || !*value)
+ return -EINVAL;
+ sb->u.adfs_sb.s_other_mask = simple_strtoul(value, &value, 8);
+ if (*value)
+ return -EINVAL;
+ } else { /* eh? say again. */
+ printk("ADFS-fs: unrecognised mount option %s\n", opt);
+ return -EINVAL;


+ }
+ }
+ return 0;
+}
+

+static int adfs_remount(struct super_block *sb, int *flags, char *data)
+{
+ return parse_options(sb, data);
+}
+
+struct super_block *adfs_read_super(struct super_block *sb, void *data, int silent)
X {
X struct adfs_discrecord *dr;
X struct buffer_head *bh;
@@ -114,28 +167,30 @@
X kdev_t dev = sb->s_dev;
X int i, j;
X
+ /* set default options */
+ sb->u.adfs_sb.s_uid = 0;
+ sb->u.adfs_sb.s_gid = 0;
+ sb->u.adfs_sb.s_owner_mask = S_IRWXU;
+ sb->u.adfs_sb.s_other_mask = S_IRWXG | S_IRWXO;
+
+ if (parse_options(sb, data))
+ goto error;
+
X MOD_INC_USE_COUNT;
- lock_super (sb);
- set_blocksize (dev, BLOCK_SIZE);
- if (!(bh = bread (dev, ADFS_DISCRECORD / BLOCK_SIZE, BLOCK_SIZE))) {
- unlock_super (sb);
- adfs_error (sb, NULL, "unable to read superblock");
- MOD_DEC_USE_COUNT;
- return NULL;
+ lock_super(sb);
+ set_blocksize(dev, BLOCK_SIZE);
+ if (!(bh = bread(dev, ADFS_DISCRECORD / BLOCK_SIZE, BLOCK_SIZE))) {
+ adfs_error(sb, NULL, "unable to read superblock");
+ goto error_unlock;
X }
X
X b_data = bh->b_data + (ADFS_DISCRECORD % BLOCK_SIZE);
X
- if (adfs_checkbblk (b_data)) {
+ if (adfs_checkbblk(b_data)) {
X if (!silent)
- printk ("VFS: Can't find an adfs filesystem on dev "
+ printk("VFS: Can't find an adfs filesystem on dev "
X "%s.\n", kdevname(dev));
-failed_mount:
- unlock_super (sb);
- if (bh)
- brelse (bh);
- MOD_DEC_USE_COUNT;
- return NULL;
+ goto error_free_bh;
X }
X dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET);
X
@@ -145,26 +200,26 @@
X (sb->s_blocksize == 512 || sb->s_blocksize == 1024 ||
X sb->s_blocksize == 2048 || sb->s_blocksize == 4096)) {
X
- brelse (bh);
- set_blocksize (dev, sb->s_blocksize);
- bh = bread (dev, ADFS_DISCRECORD / sb->s_blocksize, sb->s_blocksize);
+ brelse(bh);
+ set_blocksize(dev, sb->s_blocksize);
+ bh = bread(dev, ADFS_DISCRECORD / sb->s_blocksize, sb->s_blocksize);
X if (!bh) {
- adfs_error (sb, NULL, "couldn't read superblock on "
+ adfs_error(sb, NULL, "couldn't read superblock on "
X "2nd try.");
- goto failed_mount;
+ goto error_unlock;
X }
X b_data = bh->b_data + (ADFS_DISCRECORD % sb->s_blocksize);
- if (adfs_checkbblk (b_data)) {
- adfs_error (sb, NULL, "disc record mismatch, very weird!");
- goto failed_mount;
+ if (adfs_checkbblk(b_data)) {
+ adfs_error(sb, NULL, "disc record mismatch, very weird!");
+ goto error_free_bh;
X }
X dr = (struct adfs_discrecord *)(b_data + ADFS_DR_OFFSET);
X }
X if (sb->s_blocksize != bh->b_size) {
X if (!silent)
- printk (KERN_ERR "VFS: Unsupported blocksize on dev "
- "%s.\n", kdevname (dev));
- goto failed_mount;
+ printk(KERN_ERR "VFS: Unsupported blocksize on dev "
+ "%s.\n", kdevname(dev));
+ goto error_free_bh;
X }
X /* blocksize on this device should now be set to the adfs log2secsize */
X
@@ -202,71 +257,81 @@
X else
X sb->u.adfs_sb.s_map_block >>= -sb->u.adfs_sb.s_map2blk;
X
- printk (KERN_DEBUG "ADFS: zone size %d, IDs per zone %d, map address %X size %d sectors\n",
+ printk(KERN_DEBUG "ADFS: zone size %d, IDs per zone %d, map address %X size %d sectors\n",
X sb->u.adfs_sb.s_zone_size, sb->u.adfs_sb.s_ids_per_zone,
X sb->u.adfs_sb.s_map_block, sb->u.adfs_sb.s_map_size);
- printk (KERN_DEBUG "ADFS: sector size %d, map bit size %d\n",
- 1 << dr->log2secsize, 1 << dr->log2bpmb);
+ printk(KERN_DEBUG "ADFS: sector size %d, map bit size %d, share size %d\n",
+ 1 << dr->log2secsize, 1 << dr->log2bpmb,
+ 1 << (dr->log2secsize + dr->log2sharesize));
X
X sb->s_magic = ADFS_SUPER_MAGIC;
- sb->s_flags |= MS_RDONLY; /* we don't support writing yet */
X
- sb->u.adfs_sb.s_map = kmalloc (sb->u.adfs_sb.s_map_size *
- sizeof (struct buffer_head *), GFP_KERNEL);
+ sb->u.adfs_sb.s_map = kmalloc(sb->u.adfs_sb.s_map_size *
+ sizeof(struct buffer_head *), GFP_KERNEL);
X if (sb->u.adfs_sb.s_map == NULL) {
- adfs_error (sb, NULL, "not enough memory");
- goto failed_mount;
+ adfs_error(sb, NULL, "not enough memory");
+ goto error_free_bh;
X }
X
X for (i = 0; i < sb->u.adfs_sb.s_map_size; i++) {
- sb->u.adfs_sb.s_map[i] = bread (dev,
+ sb->u.adfs_sb.s_map[i] = bread(dev,
X sb->u.adfs_sb.s_map_block + i,
X sb->s_blocksize);
X if (!sb->u.adfs_sb.s_map[i]) {
X for (j = 0; j < i; j++)
- brelse (sb->u.adfs_sb.s_map[j]);
- kfree (sb->u.adfs_sb.s_map);
- adfs_error (sb, NULL, "unable to read map");
- goto failed_mount;
+ brelse(sb->u.adfs_sb.s_map[j]);
+ kfree(sb->u.adfs_sb.s_map);
+ adfs_error(sb, NULL, "unable to read map");
+ goto error_free_bh;
X }
X }
- if (!adfs_checkmap (sb)) {
+ if (!adfs_checkmap(sb)) {
X for (i = 0; i < sb->u.adfs_sb.s_map_size; i++)
- brelse (sb->u.adfs_sb.s_map[i]);
- adfs_error (sb, NULL, "map corrupted");
- goto failed_mount;
+ brelse(sb->u.adfs_sb.s_map[i]);
+ adfs_error(sb, NULL, "map corrupted");
+ goto error_free_bh;
X }
X
X dr = (struct adfs_discrecord *)(sb->u.adfs_sb.s_map[0]->b_data + 4);
- unlock_super (sb);
+ unlock_super(sb);
X
X /*
X * set up enough so that it can read an inode
X */
X sb->s_op = &adfs_sops;
- sb->u.adfs_sb.s_root = adfs_inode_generate (dr->root, 0);
+ sb->u.adfs_sb.s_root = adfs_inode_generate(dr->root, 0);
X sb->s_root = d_alloc_root(iget(sb, sb->u.adfs_sb.s_root), NULL);
X
X if (!sb->s_root) {
- sb->s_dev = 0;
X for (i = 0; i < sb->u.adfs_sb.s_map_size; i++)
- brelse (sb->u.adfs_sb.s_map[i]);
- brelse (bh);
- adfs_error (sb, NULL, "get root inode failed\n");
- MOD_DEC_USE_COUNT;
- return NULL;
+ brelse(sb->u.adfs_sb.s_map[i]);
+ brelse(bh);
+ adfs_error(sb, NULL, "get root inode failed\n");
+ goto error_dec_use;
X }
X return sb;
+
+error_free_bh:
+ if (bh)
+ brelse(bh);
+error_unlock:
+ unlock_super(sb);
+error_dec_use:
+ MOD_DEC_USE_COUNT;
+error:
+ sb->s_dev = 0;
+ return NULL;
X }
X
-static int adfs_statfs (struct super_block *sb, struct statfs *buf, int bufsiz)
+static int adfs_statfs(struct super_block *sb, struct statfs *buf, int bufsiz)
X {
X struct statfs tmp;
X const unsigned int nidlen = sb->u.adfs_sb.s_idlen + 1;
X
X tmp.f_type = ADFS_SUPER_MAGIC;
X tmp.f_bsize = sb->s_blocksize;
- tmp.f_blocks = (sb->u.adfs_sb.s_dr->disc_size) >> (sb->s_blocksize_bits);
+ tmp.f_blocks = sb->u.adfs_sb.s_dr->disc_size_high << (32 - sb->s_blocksize_bits) |
+ sb->u.adfs_sb.s_dr->disc_size >> sb->s_blocksize_bits;
X tmp.f_files = tmp.f_blocks >> nidlen;
X {
X unsigned int i, j = 0;
@@ -305,35 +370,35 @@
X if (freelink <= nidlen) break;
X } while (mapindex < 8 * sb->s_blocksize);
X if (mapindex > 8 * sb->s_blocksize)
- adfs_error (sb, NULL, "oversized free fragment\n");
+ adfs_error(sb, NULL, "oversized free fragment\n");
X else if (freelink)
- adfs_error (sb, NULL, "undersized free fragment\n");
+ adfs_error(sb, NULL, "undersized free fragment\n");
X }
X tmp.f_bfree = tmp.f_bavail = j <<
X (sb->u.adfs_sb.s_dr->log2bpmb - sb->s_blocksize_bits);
X }
X tmp.f_ffree = tmp.f_bfree >> nidlen;
X tmp.f_namelen = ADFS_NAME_LEN;
- return copy_to_user (buf, &tmp, bufsiz) ? -EFAULT : 0;
+ return copy_to_user(buf, &tmp, bufsiz) ? -EFAULT : 0;
X }
X
X static struct file_system_type adfs_fs_type = {
X "adfs", FS_REQUIRES_DEV, adfs_read_super, NULL
X };
X
-__initfunc(int init_adfs_fs (void))
+__initfunc(int init_adfs_fs(void))
X {
- return register_filesystem (&adfs_fs_type);
+ return register_filesystem(&adfs_fs_type);
X }
X
X #ifdef MODULE
-int init_module (void)
+int init_module(void)
X {
X return init_adfs_fs();
X }
X
-void cleanup_module (void)
+void cleanup_module(void)
X {
- unregister_filesystem (&adfs_fs_type);
+ unregister_filesystem(&adfs_fs_type);
X }
X #endif
diff -u --recursive --new-file v2.2.4/linux/fs/buffer.c linux/fs/buffer.c
--- v2.2.4/linux/fs/buffer.c Tue Mar 23 14:35:48 1999
+++ linux/fs/buffer.c Wed Mar 24 09:37:18 1999
@@ -853,6 +853,7 @@
X __brelse(buf);
X return;
X }
+ buf->b_count = 0;
X remove_from_queues(buf);
X put_last_free(buf);
X }
diff -u --recursive --new-file v2.2.4/linux/fs/ioctl.c linux/fs/ioctl.c
--- v2.2.4/linux/fs/ioctl.c Thu Nov 19 09:56:28 1998
+++ linux/fs/ioctl.c Wed Mar 24 08:08:53 1999
@@ -74,14 +74,20 @@
X filp->f_flags &= ~flag;
X break;
X
- case FIOASYNC: /* O_SYNC is not yet implemented,
- but it's here for completeness. */
+ case FIOASYNC:
X if ((error = get_user(on, (int *)arg)) != 0)
X break;
+ flag = on ? FASYNC : 0;
+
+ /* Did FASYNC state change ? */
+ if ((flag ^ filp->f_flags) & FASYNC) {
+ if (filp->f_op && filp->f_op->fasync)
+ filp->f_op->fasync(fd, filp, on);
+ }
X if (on)
- filp->f_flags |= O_SYNC;
+ filp->f_flags |= FASYNC;
X else
- filp->f_flags &= ~O_SYNC;
+ filp->f_flags &= ~FASYNC;
X break;
X
X default:
diff -u --recursive --new-file v2.2.4/linux/fs/lockd/svcsubs.c linux/fs/lockd/svcsubs.c
--- v2.2.4/linux/fs/lockd/svcsubs.c Wed Mar 10 15:29:49 1999
+++ linux/fs/lockd/svcsubs.c Thu Mar 25 09:23:34 1999
@@ -127,7 +127,7 @@
X kfree(file);
X return;
X }
- fp = &file->f_next;
+ fp = &f->f_next;
X }
X
X printk(KERN_WARNING "lockd: attempt to release unknown file!\n");
diff -u --recursive --new-file v2.2.4/linux/fs/ncpfs/sock.c linux/fs/ncpfs/sock.c
--- v2.2.4/linux/fs/ncpfs/sock.c Sun Nov 8 14:03:06 1998
+++ linux/fs/ncpfs/sock.c Fri Mar 26 13:57:41 1999
@@ -94,7 +94,7 @@
X poll_table wait_table;
X struct poll_table_entry entry;
X int init_timeout, max_timeout;
- int timeout; long tmp_timeout;
+ int timeout;
X int retrans;
X int major_timeout_seen;
X int acknowledge_seen;
diff -u --recursive --new-file v2.2.4/linux/fs/qnx4/file.c linux/fs/qnx4/file.c
--- v2.2.4/linux/fs/qnx4/file.c Thu Nov 12 16:21:23 1998
+++ linux/fs/qnx4/file.c Fri Mar 26 13:57:41 1999
@@ -33,8 +33,6 @@
X #define MIN(a,b) (((a)<(b))?(a):(b))
X #define MAX(a,b) (((a)>(b))?(a):(b))
X
-#include <linux/fs.h>
-#include <linux/qnx4_fs.h>
X
X static int qnx4_readpage(struct file *file, struct page *page);
X
diff -u --recursive --new-file v2.2.4/linux/fs/sysv/CHANGES linux/fs/sysv/CHANGES
--- v2.2.4/linux/fs/sysv/CHANGES Thu Dec 31 10:29:02 1998
+++ linux/fs/sysv/CHANGES Wed Mar 24 12:34:35 1999
@@ -1,45 +1,55 @@
-Mon Dec 15 1997 Krzysztof G. Baranowski <k...@manjak.knm.org.pl>
+Mon, 15 Dec 1997 Krzysztof G. Baranowski <k...@manjak.knm.org.pl>
X * namei.c: struct sysv_dir_inode_operations updated to use dentries.
X
-Fri Jan 23 1998 Krzysztof G. Baranowski <k...@manjak.knm.org.pl>
+Fri, 23 Jan 1998 Krzysztof G. Baranowski <k...@manjak.knm.org.pl>
X * inode.c: corrected 1 track offset setting (in sb->sv_block_base).
X Originally it was overridden (by setting to zero)
X in detected_[xenix,sysv4,sysv2,coherent]. Thanks
X to Andrzej Krzysztofowicz <an...@mif.pg.gda.pl>
X for identifying the problem.
X
-Tue Jan 27 1998 Krzysztof G. Baranowski <k...@manjak.knm.org.pl>
+Tue, 27 Jan 1998 Krzysztof G. Baranowski <k...@manjak.knm.org.pl>
X * inode.c: added 2048-byte block support to SystemV FS.
X Merged detected_bs[512,1024,2048]() into one function:
X void detected_bs (u_char type, struct super_block *sb).
X Thanks to Andrzej Krzysztofowicz <an...@mif.pg.gda.pl>
X for the patch.
X
-Wed Feb 4 1998 Krzysztof G. Baranowski <k...@manjak.knm.org.pl>
+Wed, 4 Feb 1998 Krzysztof G. Baranowski <k...@manjak.knm.org.pl>
X * namei.c: removed static subdir(); is_subdir() from dcache.c
X is used instead. Cosmetic changes.
X
-Thu Dec 3 1998 Al Viro (vi...@math.psu.edu)
+Thu, 3 Dec 1998 Al Viro (vi...@math.psu.edu)
X * namei.c (sysv_rmdir):
X Bugectomy: old check for victim being busy
X (inode->i_count) wasn't replaced (with checking
X dentry->d_count) and escaped Linus in the last round
X of changes. Shot and buried.
X
-Wed Dec 9 1998 AV
+Wed, 9 Dec 1998 AV
X * namei.c (do_sysv_rename):
X Fixed incorrect check for other owners + race.
X Removed checks that went to VFS.
X * namei.c (sysv_unlink):
X Removed checks that went to VFS.
X
-Thu Dec 10 1998 AV
+Thu, 10 Dec 1998 AV
X * namei.c (do_mknod):
X Removed dead code - mknod is never asked to
X create a symlink or directory. Incidentially,
X it wouldn't do it right if it would be called.
X
-Sat Dec 26 1998 KGB
+Sat, 26 Dec 1998 KGB
X * inode.c (detect_sysv4):
X Added detection of expanded s_type field (0x10,
X 0x20 and 0x30). Forced read-only access in this case.
+
+Sun, 21 Mar 1999 AV
+ * namei.c (sysv_link):
+ Fixed i_count usage that resulted in dcache corruption.
+ * inode.c:
+ Filled ->delete_inode() method with sysv_delete_inode().
+ sysv_put_inode() is gone, as it tried to do ->delete_
+ _inode()'s job.
+ * ialloc.c: (sysv_free_inode):
+ Fixed race.
diff -u --recursive --new-file v2.2.4/linux/include/asm-alpha/mmu_context.h linux/include/asm-alpha/mmu_context.h
--- v2.2.4/linux/include/asm-alpha/mmu_context.h Wed Sep 9 14:51:10 1998
+++ linux/include/asm-alpha/mmu_context.h Wed Mar 24 07:41:55 1999
@@ -14,11 +14,11 @@
X /*
X * The maximum ASN's the processor supports. On the EV4 this is 63
X * but the PAL-code doesn't actually use this information. On the
- * EV5 this is 127.
+ * EV5 this is 127, and EV6 has 255.
X *
X * On the EV4, the ASNs are more-or-less useless anyway, as they are
- * only used as an icache tag, not for TB entries. On the EV5 ASN's
- * also validate the TB entries, and thus make a lot more sense.
+ * only used as an icache tag, not for TB entries. On the EV5 and EV6,
+ * ASN's also validate the TB entries, and thus make a lot more sense.
X *
X * The EV4 ASN's don't even match the architecture manual, ugh. And
X * I quote: "If a processor implements address space numbers (ASNs),
@@ -73,7 +73,7 @@
X extern unsigned long asn_cache;
X #endif /* __SMP__ */
X
-#define WIDTH_HARDWARE_ASN 7
+#define WIDTH_HARDWARE_ASN 8
X #define ASN_FIRST_VERSION (1UL << (WIDTH_THIS_PROCESSOR + WIDTH_HARDWARE_ASN))
X #define HARDWARE_ASN_MASK ((1UL << WIDTH_HARDWARE_ASN) - 1)
X
diff -u --recursive --new-file v2.2.4/linux/include/asm-alpha/termios.h linux/include/asm-alpha/termios.h
--- v2.2.4/linux/include/asm-alpha/termios.h Tue Dec 22 14:16:57 1998
+++ linux/include/asm-alpha/termios.h Wed Mar 24 11:46:00 1999
@@ -79,6 +79,7 @@
X #define N_PROFIBUS_FDL 10 /* Reserved for Profibus <Da...@mvhi.com> */
X #define N_IRDA 11 /* Linux IrDa - http://www.cs.uit.no/~dagb/irda/irda.html */
X #define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data cards about SMS messages */
+#define N_HDLC 13 /* synchronous HDLC */


SHAR_EOF
true || echo 'restore of patch-2.2.5 failed'
fi

echo 'End of part 6'
echo 'File patch-2.2.5 is continued in part 7'
echo 7 > _shar_seq_.tmp

Thomas...@ciw.uni-karlsruhe.de

unread,
Apr 5, 1999, 3:00:00 AM4/5/99
to
Archive-name: v2.2/patch-2.2.5/part7

#!/bin/sh
# this is part 7 of a 8 - part archive


# do not concatenate these parts, unpack them in order with /bin/sh
# file patch-2.2.5 continued
if test ! -r _shar_seq_.tmp; then
echo 'Please unpack part 1 first!'
exit 1
fi
(read Scheck

if test "$Scheck" != 7; then


echo Please unpack part "$Scheck" next!
exit 1
else
exit 0
fi
) < _shar_seq_.tmp || exit 1
if test ! -f _shar_wnt_.tmp; then
echo 'x - still skipping patch-2.2.5'
else
echo 'x - continuing with patch-2.2.5'
sed 's/^X//' << 'SHAR_EOF' >> 'patch-2.2.5' &&

X
X #ifdef __KERNEL__
X /* eof=^D eol=\0 eol2=\0 erase=del
diff -u --recursive --new-file v2.2.4/linux/include/asm-i386/termios.h linux/include/asm-i386/termios.h
--- v2.2.4/linux/include/asm-i386/termios.h Tue Dec 22 14:16:58 1998
+++ linux/include/asm-i386/termios.h Wed Mar 24 11:45:59 1999
@@ -52,6 +52,7 @@


X #define N_PROFIBUS_FDL 10 /* Reserved for Profibus <Da...@mvhi.com> */

X #define N_IRDA 11 /* Linux IR - http://www.cs.uit.no/~dagb/irda/irda.html */


X #define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data cards about SMS messages */
+#define N_HDLC 13 /* synchronous HDLC */

X
X #ifdef __KERNEL__
X
diff -u --recursive --new-file v2.2.4/linux/include/asm-i386/timex.h linux/include/asm-i386/timex.h
--- v2.2.4/linux/include/asm-i386/timex.h Fri Jan 1 12:58:21 1999
+++ linux/include/asm-i386/timex.h Sun Mar 28 10:03:26 1999
@@ -39,7 +39,7 @@
X #else
X unsigned long eax, edx;
X
- __asm__("rdtsc":"=a" (eax), "=d" (edx));
+ __asm__ __volatile__("rdtsc":"=a" (eax), "=d" (edx));
X return eax;
X #endif
X }
diff -u --recursive --new-file v2.2.4/linux/include/asm-m68k/termios.h linux/include/asm-m68k/termios.h
--- v2.2.4/linux/include/asm-m68k/termios.h Tue Dec 22 14:16:58 1998
+++ linux/include/asm-m68k/termios.h Wed Mar 24 11:46:00 1999
@@ -60,6 +60,7 @@


X #define N_PROFIBUS_FDL 10 /* Reserved for Profibus <Da...@mvhi.com> */
X #define N_IRDA 11 /* Linux IrDa - http://www.cs.uit.no/~dagb/irda/irda.html */
X #define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data cards about SMS messages */
+#define N_HDLC 13 /* synchronous HDLC */

X
X #ifdef __KERNEL__
X
diff -u --recursive --new-file v2.2.4/linux/include/asm-mips/termios.h linux/include/asm-mips/termios.h
--- v2.2.4/linux/include/asm-mips/termios.h Tue Dec 22 14:16:58 1998
+++ linux/include/asm-mips/termios.h Wed Mar 24 11:45:59 1999
@@ -98,6 +98,7 @@


X #define N_PROFIBUS_FDL 10 /* Reserved for Profibus <Da...@mvhi.com> */
X #define N_IRDA 11 /* Linux IrDa - http://www.cs.uit.no/~dagb/irda/irda.html */
X #define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data cards about SMS messages */
+#define N_HDLC 13 /* synchronous HDLC */

X
X #ifdef __KERNEL__
X
diff -u --recursive --new-file v2.2.4/linux/include/asm-ppc/termios.h linux/include/asm-ppc/termios.h
--- v2.2.4/linux/include/asm-ppc/termios.h Thu Dec 31 10:29:02 1998
+++ linux/include/asm-ppc/termios.h Wed Mar 24 11:46:00 1999
@@ -184,6 +184,7 @@


X #define N_PROFIBUS_FDL 10 /* Reserved for Profibus <Da...@mvhi.com> */
X #define N_IRDA 11 /* Linux IrDa - http://www.cs.uit.no/~dagb/irda/irda.html */
X #define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data cards about SMS messages */
+#define N_HDLC 13 /* synchronous HDLC */

X
X #ifdef __KERNEL__
X
diff -u --recursive --new-file v2.2.4/linux/include/asm-sparc/mmu_context.h linux/include/asm-sparc/mmu_context.h
--- v2.2.4/linux/include/asm-sparc/mmu_context.h Tue Mar 23 14:35:48 1999
+++ linux/include/asm-sparc/mmu_context.h Thu Mar 25 09:23:34 1999
@@ -22,9 +22,9 @@
X
X #define destroy_context(mm) BTFIXUP_CALL(destroy_context)(mm)
X
-/* After we have set current->mm to a new value, this activates
- * the context for the new mm so we see the new mappings.
+/* This need not do anything on Sparc32. The switch happens
+ * properly later as a side effect of calling flush_thread.
X */
-#define activate_context(tsk) switch_to_context(tsk)
+#define activate_context(tsk) do { } while(0)
X
X #endif /* !(__SPARC_MMU_CONTEXT_H) */
diff -u --recursive --new-file v2.2.4/linux/include/asm-sparc/processor.h linux/include/asm-sparc/processor.h
--- v2.2.4/linux/include/asm-sparc/processor.h Tue Mar 23 14:35:48 1999
+++ linux/include/asm-sparc/processor.h Thu Mar 25 09:23:34 1999
@@ -1,4 +1,4 @@
-/* $Id: processor.h,v 1.69 1999/01/19 07:57:44 davem Exp $
+/* $Id: processor.h,v 1.70 1999/03/24 11:42:44 davem Exp $
X * include/asm-sparc/processor.h
X *
X * Copyright (C) 1994 David S. Miller (da...@caip.rutgers.edu)
@@ -148,7 +148,10 @@
X extern pid_t kernel_thread(int (*fn)(void *), void * arg, unsigned long flags);
X
X
-#define copy_segments(nr, tsk, mm) do { } while (0)
+#define copy_segments(__nr, __tsk, __mm) \
+ if((__tsk) == current && \
+ (__mm) != NULL) \
+ flush_user_windows()
X #define release_segments(mm) do { } while (0)
X #define forget_segments() do { } while (0)
X
diff -u --recursive --new-file v2.2.4/linux/include/asm-sparc/termios.h linux/include/asm-sparc/termios.h
--- v2.2.4/linux/include/asm-sparc/termios.h Tue Mar 23 14:35:48 1999
+++ linux/include/asm-sparc/termios.h Thu Mar 25 09:23:34 1999
@@ -1,4 +1,4 @@
-/* $Id: termios.h,v 1.28 1999/01/02 16:50:22 davem Exp $ */
+/* $Id: termios.h,v 1.29 1999/03/25 09:11:18 davem Exp $ */
X #ifndef _SPARC_TERMIOS_H
X #define _SPARC_TERMIOS_H
X
@@ -68,6 +68,7 @@


X #define N_PROFIBUS_FDL 10 /* Reserved for Profibus <Da...@mvhi.com> */
X #define N_IRDA 11 /* Linux IrDa - http://www.cs.uit.no/~dagb/irda/irda.html */
X #define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data cards about SMS messages */
+#define N_HDLC 13 /* synchronous HDLC */

X
X #ifdef __KERNEL__
X
diff -u --recursive --new-file v2.2.4/linux/include/asm-sparc/unistd.h linux/include/asm-sparc/unistd.h
--- v2.2.4/linux/include/asm-sparc/unistd.h Tue Mar 23 14:35:48 1999
+++ linux/include/asm-sparc/unistd.h Thu Mar 25 09:23:34 1999
@@ -1,4 +1,4 @@
-/* $Id: unistd.h,v 1.53 1999/02/21 02:34:54 anton Exp $ */
+/* $Id: unistd.h,v 1.54 1999/03/25 00:40:12 davem Exp $ */
X #ifndef _SPARC_UNISTD_H
X #define _SPARC_UNISTD_H
X
@@ -428,6 +428,8 @@
X static __inline__ _syscall0(int,sync)
X static __inline__ _syscall0(pid_t,setsid)
X static __inline__ _syscall3(int,write,int,fd,__const__ char *,buf,off_t,count)
+static __inline__ _syscall3(int,read,int,fd,char *,buf,off_t,count)
+static __inline__ _syscall3(off_t,lseek,int,fd,off_t,offset,int,count)
X static __inline__ _syscall1(int,dup,int,fd)
X static __inline__ _syscall3(int,execve,__const__ char *,file,char **,argv,char **,envp)
X static __inline__ _syscall3(int,open,__const__ char *,file,int,flag,int,mode)
diff -u --recursive --new-file v2.2.4/linux/include/asm-sparc64/pgtable.h linux/include/asm-sparc64/pgtable.h
--- v2.2.4/linux/include/asm-sparc64/pgtable.h Tue Mar 23 14:35:48 1999
+++ linux/include/asm-sparc64/pgtable.h Sun Mar 28 09:07:47 1999
@@ -1,4 +1,4 @@
-/* $Id: pgtable.h,v 1.102 1999/01/22 16:19:29 jj Exp $
+/* $Id: pgtable.h,v 1.103 1999/03/28 08:40:04 davem Exp $
X * pgtable.h: SpitFire page table operations.
X *
X * Copyright 1996,1997 David S. Miller (da...@caip.rutgers.edu)
@@ -333,8 +333,8 @@
X extern struct pgtable_cache_struct {
X unsigned long *pgd_cache;
X unsigned long *pte_cache;
- unsigned long pgcache_size;
- unsigned long pgdcache_size;
+ unsigned int pgcache_size;
+ unsigned int pgdcache_size;
X } pgt_quicklists;
X #endif
X #define pgd_quicklist (pgt_quicklists.pgd_cache)
diff -u --recursive --new-file v2.2.4/linux/include/asm-sparc64/smp.h linux/include/asm-sparc64/smp.h
--- v2.2.4/linux/include/asm-sparc64/smp.h Tue Mar 23 14:35:48 1999
+++ linux/include/asm-sparc64/smp.h Sun Mar 28 09:07:47 1999
@@ -98,8 +98,17 @@
X /* This needn't do anything as we do not sleep the cpu
X * inside of the idler task, so an interrupt is not needed
X * to get a clean fast response.
+ *
+ * Addendum: We do want it to do something for the signal
+ * delivery case, we detect that by just seeing
+ * if we are trying to send this to an idler or not.
X */
-extern __inline__ void smp_send_reschedule(int cpu) { }
+extern __inline__ void smp_send_reschedule(int cpu)
+{
+ extern void smp_receive_signal(int);
+ if(cpu_data[cpu].idle_volume == 0)
+ smp_receive_signal(cpu);
+}
X
X /* This is a nop as well because we capture all other cpus
X * anyways when making the PROM active.
diff -u --recursive --new-file v2.2.4/linux/include/asm-sparc64/termios.h linux/include/asm-sparc64/termios.h
--- v2.2.4/linux/include/asm-sparc64/termios.h Tue Mar 23 14:35:48 1999
+++ linux/include/asm-sparc64/termios.h Thu Mar 25 09:23:34 1999
@@ -1,4 +1,4 @@
-/* $Id: termios.h,v 1.7 1999/01/02 16:50:29 davem Exp $ */
+/* $Id: termios.h,v 1.8 1999/03/25 09:11:26 davem Exp $ */
X #ifndef _SPARC64_TERMIOS_H
X #define _SPARC64_TERMIOS_H
X
@@ -68,6 +68,7 @@


X #define N_PROFIBUS_FDL 10 /* Reserved for Profibus <Da...@mvhi.com> */
X #define N_IRDA 11 /* Linux IrDa - http://www.cs.uit.no/~dagb/irda/irda.html */
X #define N_SMSBLOCK 12 /* SMS block mode - for talking to GSM data cards about SMS messages */
+#define N_HDLC 13 /* synchronous HDLC */

X
X #ifdef __KERNEL__
X
diff -u --recursive --new-file v2.2.4/linux/include/asm-sparc64/unistd.h linux/include/asm-sparc64/unistd.h
--- v2.2.4/linux/include/asm-sparc64/unistd.h Tue Mar 23 14:35:48 1999
+++ linux/include/asm-sparc64/unistd.h Thu Mar 25 09:23:34 1999
@@ -1,4 +1,4 @@
-/* $Id: unistd.h,v 1.26 1999/02/10 22:24:35 jj Exp $ */
+/* $Id: unistd.h,v 1.27 1999/03/25 00:40:14 davem Exp $ */
X #ifndef _SPARC64_UNISTD_H
X #define _SPARC64_UNISTD_H
X
@@ -417,6 +417,7 @@
X static __inline__ _syscall0(pid_t,setsid)
X static __inline__ _syscall3(int,write,int,fd,__const__ char *,buf,off_t,count)
X static __inline__ _syscall3(int,read,int,fd,char *,buf,off_t,count)
+static __inline__ _syscall3(off_t,lseek,int,fd,off_t,offset,int,count)
X static __inline__ _syscall1(int,dup,int,fd)
X static __inline__ _syscall3(int,execve,__const__ char *,file,char **,argv,char **,envp)
X static __inline__ _syscall3(int,open,__const__ char *,file,int,flag,int,mode)
diff -u --recursive --new-file v2.2.4/linux/include/linux/adfs_fs_sb.h linux/include/linux/adfs_fs_sb.h
--- v2.2.4/linux/include/linux/adfs_fs_sb.h Fri Jul 31 17:05:52 1998
+++ linux/include/linux/adfs_fs_sb.h Fri Mar 26 13:57:41 1999
@@ -15,6 +15,10 @@
X struct adfs_sb_info {
X struct buffer_head *s_sbh; /* buffer head containing disc record */
X struct adfs_discrecord *s_dr; /* pointer to disc record in s_sbh */
+ uid_t s_uid; /* owner uid */
+ gid_t s_gid; /* owner gid */
+ int s_owner_mask; /* ADFS Owner perm -> unix perm */
+ int s_other_mask; /* ADFS Other perm -> unix perm */
X __u16 s_zone_size; /* size of a map zone in bits */
X __u16 s_ids_per_zone; /* max. no ids in one zone */
X __u32 s_idlen; /* length of ID in map */
diff -u --recursive --new-file v2.2.4/linux/include/linux/hippidevice.h linux/include/linux/hippidevice.h
--- v2.2.4/linux/include/linux/hippidevice.h Fri Oct 9 13:27:16 1998
+++ linux/include/linux/hippidevice.h Sun Mar 28 10:03:28 1999
@@ -52,6 +52,7 @@
X void hippi_setup(struct device *dev);
X
X extern struct device *init_hippi_dev(struct device *, int);
+extern void unregister_hipdev(struct device *dev);
X #endif
X
X #endif /* _LINUX_HIPPIDEVICE_H */
diff -u --recursive --new-file v2.2.4/linux/include/linux/if_arp.h linux/include/linux/if_arp.h
--- v2.2.4/linux/include/linux/if_arp.h Tue Dec 22 14:16:58 1998
+++ linux/include/linux/if_arp.h Sun Mar 28 10:04:25 1999
@@ -66,6 +66,13 @@
X #define ARPHRD_ASH 781 /* Nexus 64Mbps Ash */
X #define ARPHRD_ECONET 782 /* Acorn Econet */
X #define ARPHRD_IRDA 783 /* Linux/IR */
+/* ARP works differently on different FC media .. so */
+#define ARPHRD_FCPP 784 /* Point to point fibrechanel */
+#define ARPHRD_FCAL 785 /* Fibrechannel arbitrated loop */
+#define ARPHRD_FCPL 786 /* Fibrechannel public loop */
+#define ARPHRD_FCFABRIC 787 /* Fibrechannel fabric */
+ /* 787->799 reserved for fibrechannel media types */
+
X
X /* ARP protocol opcodes. */
X #define ARPOP_REQUEST 1 /* ARP request */
diff -u --recursive --new-file v2.2.4/linux/include/linux/nfsd/nfsfh.h linux/include/linux/nfsd/nfsfh.h
--- v2.2.4/linux/include/linux/nfsd/nfsfh.h Sat Sep 5 16:46:41 1998
+++ linux/include/linux/nfsd/nfsfh.h Sun Mar 28 10:03:54 1999
@@ -107,6 +107,9 @@
X void nfsd_fh_init(void);
X void nfsd_fh_free(void);
X
+void expire_all(void);
+void expire_by_dentry(struct dentry *);
+
X static __inline__ struct svc_fh *
X fh_copy(struct svc_fh *dst, struct svc_fh *src)
X {
diff -u --recursive --new-file v2.2.4/linux/include/linux/sched.h linux/include/linux/sched.h
--- v2.2.4/linux/include/linux/sched.h Wed Mar 10 15:29:50 1999
+++ linux/include/linux/sched.h Sun Mar 28 10:03:29 1999
@@ -113,6 +113,7 @@
X */
X extern rwlock_t tasklist_lock;
X extern spinlock_t scheduler_lock;
+extern spinlock_t runqueue_lock;
X
X extern void sched_init(void);
X extern void show_state(void);
diff -u --recursive --new-file v2.2.4/linux/include/linux/synclink.h linux/include/linux/synclink.h
--- v2.2.4/linux/include/linux/synclink.h Wed Dec 31 16:00:00 1969
+++ linux/include/linux/synclink.h Fri Mar 12 08:38:44 1999
@@ -0,0 +1,243 @@
+/*
+ * SyncLink Multiprotocol Serial Adapter Driver
+ *
+ * Copyright (C) 1998 by Microgate Corporation
+ *
+ * Redistribution of this file is permitted under
+ * the terms of the GNU Public License (GPL)
+ */
+
+#ifndef _SYNCLINK_H_
+#define _SYNCLINK_H_
+
+#define BOOLEAN int
+#define TRUE 1
+#define FALSE 0
+
+#define BIT0 0x0001
+#define BIT1 0x0002
+#define BIT2 0x0004
+#define BIT3 0x0008
+#define BIT4 0x0010
+#define BIT5 0x0020
+#define BIT6 0x0040
+#define BIT7 0x0080
+#define BIT8 0x0100
+#define BIT9 0x0200
+#define BIT10 0x0400
+#define BIT11 0x0800
+#define BIT12 0x1000
+#define BIT13 0x2000
+#define BIT14 0x4000
+#define BIT15 0x8000
+#define BIT16 0x00010000
+#define BIT17 0x00020000
+#define BIT18 0x00040000
+#define BIT19 0x00080000
+#define BIT20 0x00100000
+#define BIT21 0x00200000
+#define BIT22 0x00400000
+#define BIT23 0x00800000
+#define BIT24 0x01000000
+#define BIT25 0x02000000
+#define BIT26 0x04000000
+#define BIT27 0x08000000
+#define BIT28 0x10000000
+#define BIT29 0x20000000
+#define BIT30 0x40000000
+#define BIT31 0x80000000
+
+
+#define HDLC_MAX_FRAME_SIZE 4096
+#define MAX_ASYNC_TRANSMIT 4096
+
+#define ASYNC_PARITY_NONE 0
+#define ASYNC_PARITY_EVEN 1
+#define ASYNC_PARITY_ODD 2
+#define ASYNC_PARITY_SPACE 3
+
+#define HDLC_FLAG_UNDERRUN_ABORT7 0x0000
+#define HDLC_FLAG_UNDERRUN_ABORT15 0x0001
+#define HDLC_FLAG_UNDERRUN_FLAG 0x0002
+#define HDLC_FLAG_UNDERRUN_CRC 0x0004
+#define HDLC_FLAG_SHARE_ZERO 0x0010
+#define HDLC_FLAG_AUTO_CTS 0x0020
+#define HDLC_FLAG_AUTO_DCD 0x0040
+#define HDLC_FLAG_AUTO_RTS 0x0080
+#define HDLC_FLAG_RXC_DPLL 0x0100
+#define HDLC_FLAG_RXC_BRG 0x0200
+#define HDLC_FLAG_TXC_DPLL 0x0400
+#define HDLC_FLAG_TXC_BRG 0x0800
+#define HDLC_FLAG_DPLL_DIV8 0x1000
+#define HDLC_FLAG_DPLL_DIV16 0x2000
+#define HDLC_FLAG_DPLL_DIV32 0x0000
+
+#define HDLC_CRC_NONE 0
+#define HDLC_CRC_16_CCITT 1
+
+#define HDLC_TXIDLE_FLAGS 0
+#define HDLC_TXIDLE_ALT_ZEROS_ONES 1
+#define HDLC_TXIDLE_ZEROS 2
+#define HDLC_TXIDLE_ONES 3
+#define HDLC_TXIDLE_ALT_MARK_SPACE 4
+#define HDLC_TXIDLE_SPACE 5
+#define HDLC_TXIDLE_MARK 6
+
+#define HDLC_ENCODING_NRZ 0
+#define HDLC_ENCODING_NRZB 1
+#define HDLC_ENCODING_NRZI_MARK 2
+#define HDLC_ENCODING_NRZI_SPACE 3
+#define HDLC_ENCODING_BIPHASE_MARK 4
+#define HDLC_ENCODING_BIPHASE_SPACE 5
+#define HDLC_ENCODING_BIPHASE_LEVEL 6
+#define HDLC_ENCODING_DIFF_BIPHASE_LEVEL 7
+
+#define HDLC_PREAMBLE_LENGTH_8BITS 0
+#define HDLC_PREAMBLE_LENGTH_16BITS 1
+#define HDLC_PREAMBLE_LENGTH_32BITS 2
+#define HDLC_PREAMBLE_LENGTH_64BITS 3
+
+#define HDLC_PREAMBLE_PATTERN_NONE 0
+#define HDLC_PREAMBLE_PATTERN_ZEROS 1
+#define HDLC_PREAMBLE_PATTERN_FLAGS 2
+#define HDLC_PREAMBLE_PATTERN_10 3
+#define HDLC_PREAMBLE_PATTERN_01 4
+#define HDLC_PREAMBLE_PATTERN_ONES 5
+
+#define MGSL_MODE_ASYNC 1
+#define MGSL_MODE_HDLC 2
+
+#define MGSL_BUS_TYPE_ISA 1
+#define MGSL_BUS_TYPE_EISA 2
+#define MGSL_BUS_TYPE_PCI 5
+
+typedef struct _MGSL_PARAMS
+{
+ /* Common */
+
+ unsigned long mode; /* Asynchronous or HDLC */
+ unsigned char loopback; /* internal loopback mode */
+
+ /* HDLC Only */
+
+ unsigned short flags;
+ unsigned char encoding; /* NRZ, NRZI, etc. */
+ unsigned long clock_speed; /* external clock speed in bits per second */
+ unsigned char addr_filter; /* receive HDLC address filter, 0xFF = disable */
+ unsigned short crc_type; /* None, CRC16 or CRC16-CCITT */
+ unsigned char preamble_length;
+ unsigned char preamble;
+
+ /* Async Only */
+
+ unsigned long data_rate; /* bits per second */
+ unsigned char data_bits; /* 7 or 8 data bits */
+ unsigned char stop_bits; /* 1 or 2 stop bits */
+ unsigned char parity; /* none, even, or odd */
+
+} MGSL_PARAMS, *PMGSL_PARAMS;
+
+#define MICROGATE_VENDOR_ID 0x13c0
+#define SYNCLINK_DEVICE_ID 0x0010
+#define MGSL_MAX_SERIAL_NUMBER 30
+
+/*
+** device diagnostics status
+*/
+
+#define DiagStatus_OK 0
+#define DiagStatus_AddressFailure 1
+#define DiagStatus_AddressConflict 2
+#define DiagStatus_IrqFailure 3
+#define DiagStatus_IrqConflict 4
+#define DiagStatus_DmaFailure 5
+#define DiagStatus_DmaConflict 6
+#define DiagStatus_PciAdapterNotFound 7
+#define DiagStatus_CantAssignPciResources 8
+#define DiagStatus_CantAssignPciMemAddr 9
+#define DiagStatus_CantAssignPciIoAddr 10
+#define DiagStatus_CantAssignPciIrq 11
+#define DiagStatus_MemoryError 12
+
+#define SerialSignal_DCD 0x01 /* Data Carrier Detect */
+#define SerialSignal_TXD 0x02 /* Transmit Data */
+#define SerialSignal_RI 0x04 /* Ring Indicator */
+#define SerialSignal_RXD 0x08 /* Receive Data */
+#define SerialSignal_CTS 0x10 /* Clear to Send */
+#define SerialSignal_RTS 0x20 /* Request to Send */
+#define SerialSignal_DSR 0x40 /* Data Set Ready */
+#define SerialSignal_DTR 0x80 /* Data Terminal Ready */
+
+
+/*
+ * Counters of the input lines (CTS, DSR, RI, CD) interrupts
+ */
+struct mgsl_icount {
+ __u32 cts, dsr, rng, dcd, tx, rx;
+ __u32 frame, parity, overrun, brk;
+ __u32 buf_overrun;
+ __u32 txok;
+ __u32 txunder;
+ __u32 txabort;
+ __u32 txtimeout;
+ __u32 rxshort;
+ __u32 rxlong;
+ __u32 rxabort;
+ __u32 rxover;
+ __u32 rxcrc;
+ __u32 rxok;
+ __u32 exithunt;
+ __u32 rxidle;
+};
+
+
+#define DEBUG_LEVEL_DATA 1
+#define DEBUG_LEVEL_ERROR 2
+#define DEBUG_LEVEL_INFO 3
+#define DEBUG_LEVEL_BH 4
+#define DEBUG_LEVEL_ISR 5
+
+/*
+** Event bit flags for use with MgslWaitEvent
+*/
+
+#define MgslEvent_DsrActive 0x0001
+#define MgslEvent_DsrInactive 0x0002
+#define MgslEvent_Dsr 0x0003
+#define MgslEvent_CtsActive 0x0004
+#define MgslEvent_CtsInactive 0x0008
+#define MgslEvent_Cts 0x000c
+#define MgslEvent_DcdActive 0x0010
+#define MgslEvent_DcdInactive 0x0020
+#define MgslEvent_Dcd 0x0030
+#define MgslEvent_RiActive 0x0040
+#define MgslEvent_RiInactive 0x0080
+#define MgslEvent_Ri 0x00c0
+#define MgslEvent_ExitHuntMode 0x0100
+#define MgslEvent_IdleReceived 0x0200
+
+/* Private IOCTL codes:
+ *
+ * MGSL_IOCSPARAMS set MGSL_PARAMS structure values
+ * MGSL_IOCGPARAMS get current MGSL_PARAMS structure values
+ * MGSL_IOCSTXIDLE set current transmit idle mode
+ * MGSL_IOCGTXIDLE get current transmit idle mode
+ * MGSL_IOCTXENABLE enable or disable transmitter
+ * MGSL_IOCRXENABLE enable or disable receiver
+ * MGSL_IOCTXABORT abort transmitting frame (HDLC)
+ * MGSL_IOCGSTATS return current statistics
+ * MGSL_IOCWAITEVENT wait for specified event to occur
+ */
+#define MGSL_MAGIC_IOC 'm'
+#define MGSL_IOCSPARAMS _IOW(MGSL_MAGIC_IOC,0,sizeof(MGSL_PARAMS))
+#define MGSL_IOCGPARAMS _IOR(MGSL_MAGIC_IOC,1,sizeof(MGSL_PARAMS))
+#define MGSL_IOCSTXIDLE _IO(MGSL_MAGIC_IOC,2)
+#define MGSL_IOCGTXIDLE _IO(MGSL_MAGIC_IOC,3)
+#define MGSL_IOCTXENABLE _IO(MGSL_MAGIC_IOC,4)
+#define MGSL_IOCRXENABLE _IO(MGSL_MAGIC_IOC,5)
+#define MGSL_IOCTXABORT _IO(MGSL_MAGIC_IOC,6)
+#define MGSL_IOCGSTATS _IO(MGSL_MAGIC_IOC,7)
+#define MGSL_IOCWAITEVENT _IO(MGSL_MAGIC_IOC,8)
+#define MGSL_IOCCLRMODCOUNT _IO(MGSL_MAGIC_IOC,15)
+
+#endif /* _SYNCLINK_H_ */
diff -u --recursive --new-file v2.2.4/linux/include/net/pkt_cls.h linux/include/net/pkt_cls.h
--- v2.2.4/linux/include/net/pkt_cls.h Tue Mar 23 14:35:48 1999
+++ linux/include/net/pkt_cls.h Thu Mar 25 09:23:34 1999
@@ -79,9 +79,8 @@
X
X extern __inline__ unsigned long cls_set_class(unsigned long *clp, unsigned long cl)
X {
- net_serialize_enter();
X cl = xchg(clp, cl);
- net_serialize_leave();
+ synchronize_bh();
X return cl;
X }
X
diff -u --recursive --new-file v2.2.4/linux/include/net/sock.h linux/include/net/sock.h
--- v2.2.4/linux/include/net/sock.h Tue Mar 23 14:35:48 1999
+++ linux/include/net/sock.h Sun Mar 28 10:04:27 1999
@@ -845,6 +845,9 @@
X
X extern __inline__ int sock_queue_rcv_skb(struct sock *sk, struct sk_buff *skb)
X {
+#ifdef CONFIG_FILTER
+ struct sk_filter *filter;
+#endif
X /* Cast skb->rcvbuf to unsigned... It's pointless, but reduces
X number of warnings when compiling with -W --ANK
X */
@@ -852,7 +855,7 @@
X return -ENOMEM;
X
X #ifdef CONFIG_FILTER
- if (sk->filter && sk_filter(skb, sk->filter))
+ if ((filter = sk->filter) != NULL && sk_filter(skb, filter))
X return -EPERM; /* Toss packet */
X #endif /* CONFIG_FILTER */
X
@@ -922,14 +925,6 @@
X {
X return in_interrupt() ? GFP_ATOMIC : GFP_KERNEL;
X }
-
-#ifdef __SMP__
-#define net_serialize_enter() start_bh_atomic()
-#define net_serialize_leave() end_bh_atomic()
-#else
-#define net_serialize_enter() barrier();
-#define net_serialize_leave() barrier();
-#endif
X
X /*
X * Enable debug/info messages
diff -u --recursive --new-file v2.2.4/linux/kernel/acct.c linux/kernel/acct.c
--- v2.2.4/linux/kernel/acct.c Tue Mar 23 14:35:48 1999
+++ linux/kernel/acct.c Tue Mar 23 16:57:38 1999
@@ -194,13 +194,13 @@
X }
X if (old_acct) {
X do_acct_process(0,old_acct);
- filp_close(old_acct);
+ filp_close(old_acct, NULL);
X }
X out:
X unlock_kernel();
X return error;
X out_err:
- filp_close(file);
+ filp_close(file, NULL);
X goto out;
X }
X
diff -u --recursive --new-file v2.2.4/linux/kernel/fork.c linux/kernel/fork.c
--- v2.2.4/linux/kernel/fork.c Tue Mar 23 14:35:48 1999
+++ linux/kernel/fork.c Fri Mar 26 09:45:07 1999
@@ -57,33 +57,39 @@
X
X #define uidhashfn(uid) (((uid >> 8) ^ uid) & (UIDHASH_SZ - 1))
X
+/*
+ * These routines must be called with the uidhash spinlock held!
+ */
X static inline void uid_hash_insert(struct user_struct *up, unsigned int hashent)
X {
- spin_lock(&uidhash_lock);
X if((up->next = uidhash[hashent]) != NULL)
X uidhash[hashent]->pprev = &up->next;
X up->pprev = &uidhash[hashent];
X uidhash[hashent] = up;
- spin_unlock(&uidhash_lock);
X }
X
X static inline void uid_hash_remove(struct user_struct *up)
X {
- spin_lock(&uidhash_lock);
X if(up->next)
X up->next->pprev = up->pprev;
X *up->pprev = up->next;
- spin_unlock(&uidhash_lock);
X }
X
-static inline struct user_struct *uid_find(unsigned short uid, unsigned int hashent)
+static inline struct user_struct *uid_hash_find(unsigned short uid, unsigned int hashent)
X {
- struct user_struct *up;
+ struct user_struct *up, *next;
X
- spin_lock(&uidhash_lock);
- for(up = uidhash[hashent]; (up && up->uid != uid); up = up->next)
- ;
- spin_unlock(&uidhash_lock);
+ next = uidhash[hashent];
+ for (;;) {
+ up = next;
+ if (next) {
+ next = up->next;
+ if (up->uid != uid)
+ continue;
+ atomic_inc(&up->count);
+ }
+ break;
+ }
X return up;
X }
X
@@ -94,7 +100,9 @@
X if (up) {
X p->user = NULL;
X if (atomic_dec_and_test(&up->count)) {
+ spin_lock(&uidhash_lock);
X uid_hash_remove(up);
+ spin_unlock(&uidhash_lock);
X kmem_cache_free(uid_cachep, up);
X }
X }
@@ -103,20 +111,37 @@
X int alloc_uid(struct task_struct *p)
X {
X unsigned int hashent = uidhashfn(p->uid);
- struct user_struct *up = uid_find(p->uid, hashent);
+ struct user_struct *up;
+
+ spin_lock(&uidhash_lock);
+ up = uid_hash_find(p->uid, hashent);
+ spin_unlock(&uidhash_lock);
X
- p->user = up;
X if (!up) {
- up = kmem_cache_alloc(uid_cachep, SLAB_KERNEL);
- if (!up)
+ struct user_struct *new;
+
+ new = kmem_cache_alloc(uid_cachep, SLAB_KERNEL);
+ if (!new)
X return -EAGAIN;
- p->user = up;
- up->uid = p->uid;
- atomic_set(&up->count, 0);
- uid_hash_insert(up, hashent);
- }
+ new->uid = p->uid;
+ atomic_set(&new->count, 1);
+
+ /*
+ * Before adding this, check whether we raced
+ * on adding the same user already..
+ */
+ spin_lock(&uidhash_lock);
+ up = uid_hash_find(p->uid, hashent);
+ if (up) {
+ kmem_cache_free(uid_cachep, new);
+ } else {
+ uid_hash_insert(new, hashent);
+ up = new;
+ }
+ spin_unlock(&uidhash_lock);
X
- atomic_inc(&up->count);
+ }
+ p->user = up;


X return 0;
X }
X

diff -u --recursive --new-file v2.2.4/linux/kernel/signal.c linux/kernel/signal.c
--- v2.2.4/linux/kernel/signal.c Tue Dec 22 14:16:59 1998
+++ linux/kernel/signal.c Fri Mar 26 14:01:26 1999
@@ -363,8 +363,27 @@
X }
X
X sigaddset(&t->signal, sig);
- if (!sigismember(&t->blocked, sig))
+ if (!sigismember(&t->blocked, sig)) {
X t->sigpending = 1;
+#ifdef __SMP__
+ /*
+ * If the task is running on a different CPU
+ * force a reschedule on the other CPU - note that
+ * the code below is a tad loose and might occasionally
+ * kick the wrong CPU if we catch the process in the
+ * process of changing - but no harm is done by that
+ * other than doing an extra (lightweight) IPI interrupt.
+ *
+ * note that we rely on the previous spin_lock to
+ * lock interrupts for us! No need to set need_resched
+ * since signal event passing goes through ->blocked.
+ */
+ spin_lock(&runqueue_lock);
+ if (t->has_cpu && t->processor != smp_processor_id())
+ smp_send_reschedule(t->processor);
+ spin_unlock(&runqueue_lock);
+#endif /* __SMP__ */
+ }
X
X out:
X spin_unlock_irqrestore(&t->sigmask_lock, flags);
diff -u --recursive --new-file v2.2.4/linux/net/appletalk/ddp.c linux/net/appletalk/ddp.c
--- v2.2.4/linux/net/appletalk/ddp.c Thu Jan 7 15:11:41 1999
+++ linux/net/appletalk/ddp.c Fri Mar 26 14:01:40 1999
@@ -356,7 +356,7 @@
X /*
X * Scan the networks.
X */
-
+ atif->status |= ATIF_PROBE;
X for(netct = 0; netct <= netrange; netct++)
X {
X /*
@@ -374,8 +374,10 @@
X */
X aarp_probe_network(atif);
X
- if(!(atif->status & ATIF_PROBE_FAIL))
+ if(!(atif->status & ATIF_PROBE_FAIL)) {
+ atif->status &= ~ATIF_PROBE;
X return (0);
+ }
X }
X atif->status &= ~ATIF_PROBE_FAIL;
X }
@@ -383,7 +385,7 @@
X if(probe_net > ntohs(atif->nets.nr_lastnet))
X probe_net = ntohs(atif->nets.nr_firstnet);
X }
-
+ atif->status &= ~ATIF_PROBE;
X return (-EADDRINUSE); /* Network is full... */
X }
X
diff -u --recursive --new-file v2.2.4/linux/net/core/dev.c linux/net/core/dev.c
--- v2.2.4/linux/net/core/dev.c Tue Mar 23 14:35:48 1999
+++ linux/net/core/dev.c Thu Mar 25 09:23:34 1999
@@ -232,9 +232,8 @@
X {
X if(pt==(*pt1))
X {
- net_serialize_enter();
X *pt1=pt->next;
- net_serialize_leave();
+ synchronize_bh();
X #ifdef CONFIG_NET_FASTROUTE
X if (pt->data)
X netdev_fastroute_obstacles--;
@@ -1823,9 +1822,8 @@
X /* And unlink it from device chain. */
X for (dp = &dev_base; (d=*dp) != NULL; dp=&d->next) {
X if (d == dev) {
- net_serialize_enter();
X *dp = d->next;
- net_serialize_leave();
+ synchronize_bh();
X d->next = NULL;
X
X if (dev->destructor)
@@ -1986,9 +1984,8 @@
X /*
X * It failed to come up. Unhook it.
X */
- net_serialize_enter();
X *dp = dev->next;
- net_serialize_leave();
+ synchronize_bh();
X }
X else
X {
diff -u --recursive --new-file v2.2.4/linux/net/core/filter.c linux/net/core/filter.c
--- v2.2.4/linux/net/core/filter.c Tue Mar 23 14:35:48 1999
+++ linux/net/core/filter.c Thu Mar 25 09:23:34 1999
@@ -441,9 +441,8 @@
X
X if ((err = sk_chk_filter(fp->insns, fp->len))==0) {
X struct sk_filter *old_fp = sk->filter;
- net_serialize_enter();
X sk->filter = fp;
- net_serialize_leave();
+ synchronize_bh();
X fp = old_fp;
X }
X
diff -u --recursive --new-file v2.2.4/linux/net/core/neighbour.c linux/net/core/neighbour.c
--- v2.2.4/linux/net/core/neighbour.c Tue Mar 23 14:35:48 1999
+++ linux/net/core/neighbour.c Thu Mar 25 09:23:34 1999
@@ -337,9 +337,8 @@
X
X for (np = &tbl->phash_buckets[hash_val]; (n=*np) != NULL; np = &n->next) {
X if (memcmp(n->key, pkey, key_len) == 0 && n->dev == dev) {
- net_serialize_enter();
X *np = n->next;
- net_serialize_leave();
+ synchronize_bh();
X if (tbl->pdestructor)
X tbl->pdestructor(n);
X kfree(n);
@@ -358,9 +357,8 @@
X np = &tbl->phash_buckets[h];
X for (np = &tbl->phash_buckets[h]; (n=*np) != NULL; np = &n->next) {
X if (n->dev == dev || dev == NULL) {
- net_serialize_enter();
X *np = n->next;
- net_serialize_leave();
+ synchronize_bh();
X if (tbl->pdestructor)
X tbl->pdestructor(n);
X kfree(n);
@@ -963,9 +961,8 @@
X return;
X for (p = &tbl->parms.next; *p; p = &(*p)->next) {
X if (*p == parms) {
- net_serialize_enter();
X *p = parms->next;
- net_serialize_leave();
+ synchronize_bh();
X #ifdef CONFIG_SYSCTL
X neigh_sysctl_unregister(parms);
X #endif
@@ -1014,9 +1011,8 @@
X printk(KERN_CRIT "neighbour leakage\n");
X for (tp = &neigh_tables; *tp; tp = &(*tp)->next) {
X if (*tp == tbl) {
- net_serialize_enter();
X *tp = tbl->next;
- net_serialize_leave();
+ synchronize_bh();
X break;
X }
X }
diff -u --recursive --new-file v2.2.4/linux/net/core/sock.c linux/net/core/sock.c
--- v2.2.4/linux/net/core/sock.c Tue Mar 23 14:35:48 1999
+++ linux/net/core/sock.c Sun Mar 28 09:07:47 1999
@@ -7,7 +7,7 @@
X * handler for protocols to use and generic option handler.
X *
X *
- * Version: $Id: sock.c,v 1.77 1999/03/21 05:22:26 davem Exp $
+ * Version: $Id: sock.c,v 1.79 1999/03/28 10:18:25 davem Exp $
X *
X * Authors: Ross Biro, <bi...@leland.Stanford.Edu>
X * Fred N. van Kempen, <wal...@uWalt.NL.Mugnet.ORG>
@@ -150,6 +150,9 @@
X char *optval, int optlen)
X {
X struct sock *sk=sock->sk;
+#ifdef CONFIG_FILTER
+ struct sk_filter *filter;
+#endif
X int val;
X int valbool;
X int err;
@@ -341,17 +344,11 @@
X break;
X
X case SO_DETACH_FILTER:
- if(sk->filter) {
- struct sk_filter *filter;
-
- filter = sk->filter;
-
- net_serialize_enter();
+ filter = sk->filter;
+ if(filter) {
X sk->filter = NULL;
- net_serialize_leave();
-
- if (filter)
- sk_filter_release(sk, filter);
+ synchronize_bh();
+ sk_filter_release(sk, filter);
X return 0;
X }
X return -ENOENT;
@@ -501,22 +498,16 @@
X
X void sk_free(struct sock *sk)
X {
- if (sk->destruct)
- sk->destruct(sk);
-
X #ifdef CONFIG_FILTER
- if (sk->filter) {
- sk_filter_release(sk, sk->filter);
- sk->filter = NULL;
- }
+ struct sk_filter *filter;
X #endif
-
- if (atomic_read(&sk->omem_alloc))
- printk(KERN_DEBUG "sk_free: optmem leakage (%d bytes) detected.\n", atomic_read(&sk->omem_alloc));
+ if (sk->destruct)
+ sk->destruct(sk);
X
X #ifdef CONFIG_FILTER
- if (sk->filter) {
- sk_filter_release(sk, sk->filter);
+ filter = sk->filter;
+ if (filter) {
+ sk_filter_release(sk, filter);
X sk->filter = NULL;
X }
X #endif
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/af_inet.c linux/net/ipv4/af_inet.c
--- v2.2.4/linux/net/ipv4/af_inet.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/af_inet.c Thu Mar 25 09:23:34 1999
@@ -5,7 +5,7 @@
X *
X * PF_INET protocol family socket handler.
X *
- * Version: $Id: af_inet.c,v 1.85 1999/03/21 05:22:28 davem Exp $
+ * Version: $Id: af_inet.c,v 1.86 1999/03/25 00:38:15 davem Exp $
X *
X * Authors: Ross Biro, <bi...@leland.Stanford.Edu>
X * Fred N. van Kempen, <wal...@uWalt.NL.Mugnet.ORG>
@@ -661,6 +661,7 @@
X lock_sock(sk);
X tcp_set_state(sk, TCP_CLOSE);
X release_sock(sk);
+ sk->zapped = 0;
X }
X sock->state = SS_UNCONNECTED;
X return sock_error(sk);
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/devinet.c linux/net/ipv4/devinet.c
--- v2.2.4/linux/net/ipv4/devinet.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/devinet.c Thu Mar 25 09:23:34 1999
@@ -1,7 +1,7 @@
X /*
X * NET3 IP device support routines.
X *
- * Version: $Id: devinet.c,v 1.26 1999/03/21 05:22:31 davem Exp $
+ * Version: $Id: devinet.c,v 1.27 1999/03/25 10:04:06 davem Exp $
X *
X * This program is free software; you can redistribute it and/or
X * modify it under the terms of the GNU General Public License
@@ -138,9 +138,8 @@
X #ifdef CONFIG_SYSCTL
X devinet_sysctl_unregister(&in_dev->cnf);
X #endif
- net_serialize_enter();
X in_dev->dev->ip_ptr = NULL;
- net_serialize_leave();
+ synchronize_bh();
X neigh_parms_release(&arp_tbl, in_dev->arp_parms);
X kfree(in_dev);
X }
@@ -174,9 +173,8 @@
X ifap1 = &ifa->ifa_next;
X continue;
X }
- net_serialize_enter();
X *ifap1 = ifa->ifa_next;
- net_serialize_leave();
+ synchronize_bh();
X
X rtmsg_ifa(RTM_DELADDR, ifa);
X notifier_call_chain(&inetaddr_chain, NETDEV_DOWN, ifa);
@@ -186,9 +184,8 @@
X
X /* 2. Unlink it */
X
- net_serialize_enter();
X *ifap = ifa1->ifa_next;
- net_serialize_leave();
+ synchronize_bh();
X
X /* 3. Announce address deletion */
X
@@ -244,9 +241,8 @@
X }
X
X ifa->ifa_next = *ifap;
- net_serialize_enter();
+ wmb();
X *ifap = ifa;
- net_serialize_leave();
X
X /* Send message first, then call notifier.
X Notifier will trigger FIB update, so that
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/fib_hash.c linux/net/ipv4/fib_hash.c
--- v2.2.4/linux/net/ipv4/fib_hash.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/fib_hash.c Thu Mar 25 09:23:34 1999
@@ -5,7 +5,7 @@
X *
X * IPv4 FIB: lookup engine and maintenance routines.
X *
- * Version: $Id: fib_hash.c,v 1.7 1999/03/21 05:22:32 davem Exp $
+ * Version: $Id: fib_hash.c,v 1.8 1999/03/25 10:04:17 davem Exp $
X *
X * Authors: Alexey Kuznetsov, <kuz...@ms2.inr.ac.ru>
X *
@@ -566,9 +566,8 @@
X if (del_fp) {
X f = *del_fp;
X /* Unlink replaced node */
- net_serialize_enter();
X *del_fp = f->fn_next;
- net_serialize_leave();
+ synchronize_bh();
X
X if (!(f->fn_state&FN_S_ZOMBIE))
X rtmsg_fib(RTM_DELROUTE, f, z, tb->tb_id, n, req);
@@ -656,9 +655,8 @@
X rtmsg_fib(RTM_DELROUTE, f, z, tb->tb_id, n, req);
X
X if (matched != 1) {
- net_serialize_enter();
X *del_fp = f->fn_next;
- net_serialize_leave();
+ synchronize_bh();
X
X if (f->fn_state&FN_S_ACCESSED)
X rt_cache_flush(-1);
@@ -689,9 +687,8 @@
X struct fib_info *fi = FIB_INFO(f);
X
X if (fi && ((f->fn_state&FN_S_ZOMBIE) || (fi->fib_flags&RTNH_F_DEAD))) {
- net_serialize_enter();
X *fp = f->fn_next;
- net_serialize_leave();
+ synchronize_bh();
X
X fn_free_node(f);
X found++;
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/fib_rules.c linux/net/ipv4/fib_rules.c
--- v2.2.4/linux/net/ipv4/fib_rules.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/fib_rules.c Thu Mar 25 09:23:34 1999
@@ -5,7 +5,7 @@
X *
X * IPv4 Forwarding Information Base: policy rules.
X *
- * Version: $Id: fib_rules.c,v 1.8 1999/03/21 05:22:33 davem Exp $
+ * Version: $Id: fib_rules.c,v 1.9 1999/03/25 10:04:23 davem Exp $
X *
X * Authors: Alexey Kuznetsov, <kuz...@ms2.inr.ac.ru>
X *
@@ -101,9 +101,10 @@
X (!rtm->rtm_table || (r && rtm->rtm_table == r->r_table))) {
X if (r == &local_rule)
X return -EPERM;
- net_serialize_enter();
+
X *rp = r->r_next;
- net_serialize_leave();
+ synchronize_bh();
+
X if (r != &default_rule && r != &main_rule)
X kfree(r);
X return 0;
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/igmp.c linux/net/ipv4/igmp.c
--- v2.2.4/linux/net/ipv4/igmp.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/igmp.c Thu Mar 25 09:23:34 1999
@@ -8,7 +8,7 @@
X * the older version didn't come out right using gcc 2.5.8, the newer one
X * seems to fall out with gcc 2.6.2.
X *
- * Version: $Id: igmp.c,v 1.29 1999/03/21 05:22:36 davem Exp $
+ * Version: $Id: igmp.c,v 1.30 1999/03/25 10:04:10 davem Exp $
X *
X * Authors:
X * Alan Cox <Alan...@linux.org>
@@ -463,9 +463,9 @@
X for (ip=&in_dev->mc_list; (i=*ip)!=NULL; ip=&i->next) {
X if (i->multiaddr==addr) {
X if (--i->users == 0) {
- net_serialize_enter();
X *ip = i->next;
- net_serialize_leave();
+ synchronize_bh();
+
X igmp_group_dropped(i);
X if (in_dev->dev->flags & IFF_UP)
X ip_rt_multicast_event(in_dev);
@@ -613,9 +613,10 @@
X struct in_device *in_dev;
X if (--iml->count)
X return 0;
- net_serialize_enter();
+
X *imlp = iml->next;
- net_serialize_leave();
+ synchronize_bh();
+
X in_dev = inetdev_by_index(iml->multi.imr_ifindex);
X if (in_dev)
X ip_mc_dec_group(in_dev, imr->imr_multiaddr.s_addr);
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/ip_gre.c linux/net/ipv4/ip_gre.c
--- v2.2.4/linux/net/ipv4/ip_gre.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/ip_gre.c Thu Mar 25 09:23:34 1999
@@ -211,10 +211,9 @@
X {
X struct ip_tunnel **tp = ipgre_bucket(t);
X
- net_serialize_enter();
X t->next = *tp;
+ wmb();
X *tp = t;
- net_serialize_leave();
X }
X
X static void ipgre_tunnel_unlink(struct ip_tunnel *t)
@@ -223,9 +222,8 @@
X
X for (tp = ipgre_bucket(t); *tp; tp = &(*tp)->next) {
X if (t == *tp) {
- net_serialize_enter();
X *tp = t->next;
- net_serialize_leave();
+ synchronize_bh();
X break;
X }
X }
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/ip_output.c linux/net/ipv4/ip_output.c
--- v2.2.4/linux/net/ipv4/ip_output.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/ip_output.c Thu Mar 25 09:23:34 1999
@@ -5,7 +5,7 @@
X *
X * The Internet Protocol (IP) output module.
X *
- * Version: $Id: ip_output.c,v 1.66 1999/03/21 05:22:41 davem Exp $
+ * Version: $Id: ip_output.c,v 1.67 1999/03/25 00:43:00 davem Exp $
X *
X * Authors: Ross Biro, <bi...@leland.Stanford.Edu>
X * Fred N. van Kempen, <wal...@uWalt.NL.Mugnet.ORG>
@@ -350,7 +350,7 @@
X into account). Actually, tcp should make it. --ANK (980801)
X */
X iph->frag_off |= __constant_htons(IP_DF);
- printk(KERN_DEBUG "sending pkt_too_big to self\n");
+ NETDEBUG(printk(KERN_DEBUG "sending pkt_too_big to self\n"));
X
X /* icmp_send is not reenterable, so that bh_atomic... --ANK */
X start_bh_atomic();
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/ip_sockglue.c linux/net/ipv4/ip_sockglue.c
--- v2.2.4/linux/net/ipv4/ip_sockglue.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/ip_sockglue.c Thu Mar 25 09:23:34 1999
@@ -5,7 +5,7 @@
X *
X * The IP to API glue.
X *
- * Version: $Id: ip_sockglue.c,v 1.40 1999/03/21 05:22:42 davem Exp $
+ * Version: $Id: ip_sockglue.c,v 1.41 1999/03/25 10:04:29 davem Exp $
X *
X * Authors: see ip.c
X *
@@ -209,9 +209,9 @@
X kfree(new_ra);
X return -EADDRINUSE;
X }
- net_serialize_enter();
X *rap = ra->next;
- net_serialize_leave();
+ synchronize_bh();
+
X if (ra->destructor)
X ra->destructor(sk);
X kfree(ra);
@@ -222,10 +222,11 @@
X return -ENOBUFS;
X new_ra->sk = sk;
X new_ra->destructor = destructor;
+
X new_ra->next = ra;
- net_serialize_enter();
+ wmb();
X *rap = new_ra;
- net_serialize_leave();
+


X return 0;
X }
X

diff -u --recursive --new-file v2.2.4/linux/net/ipv4/ipconfig.c linux/net/ipv4/ipconfig.c
--- v2.2.4/linux/net/ipv4/ipconfig.c Tue Jan 19 11:32:53 1999
+++ linux/net/ipv4/ipconfig.c Sun Mar 28 09:07:47 1999
@@ -1,5 +1,5 @@
X /*
- * $Id: ipconfig.c,v 1.19 1999/01/15 06:54:00 davem Exp $
+ * $Id: ipconfig.c,v 1.20 1999/03/28 10:18:28 davem Exp $
X *
X * Automatic Configuration of IP -- use BOOTP or RARP or user-supplied
X * information to configure own IP address and routes.
@@ -825,9 +825,9 @@
X */
X if (ic_myaddr == INADDR_NONE ||
X #ifdef CONFIG_ROOT_NFS
- root_server_addr == INADDR_NONE ||
+ (root_server_addr == INADDR_NONE && ic_servaddr == INADDR_NONE) ||
X #endif
- (ic_first_dev && ic_first_dev->next)) {
+ ic_first_dev->next) {
X #ifdef CONFIG_IP_PNP_DYNAMIC
X if (ic_dynamic() < 0) {
X printk(KERN_ERR "IP-Config: Auto-configuration of network failed.\n");
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/ipip.c linux/net/ipv4/ipip.c
--- v2.2.4/linux/net/ipv4/ipip.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/ipip.c Thu Mar 25 09:23:34 1999
@@ -1,7 +1,7 @@
X /*
X * Linux NET3: IP/IP protocol decoder.
X *
- * Version: $Id: ipip.c,v 1.25 1999/03/21 05:22:43 davem Exp $
+ * Version: $Id: ipip.c,v 1.26 1999/03/25 10:04:32 davem Exp $
X *
X * Authors:
X * Sam Lantinga (slo...@cs.ucdavis.edu) 02/01/95
@@ -182,9 +182,8 @@
X
X for (tp = ipip_bucket(t); *tp; tp = &(*tp)->next) {
X if (t == *tp) {
- net_serialize_enter();
X *tp = t->next;
- net_serialize_leave();
+ synchronize_bh();
X break;
X }
X }
@@ -194,10 +193,9 @@
X {
X struct ip_tunnel **tp = ipip_bucket(t);
X
- net_serialize_enter();
X t->next = *tp;
+ wmb();
X *tp = t;
- net_serialize_leave();
X }
X
X struct ip_tunnel * ipip_tunnel_locate(struct ip_tunnel_parm *parms, int create)
@@ -265,9 +263,8 @@
X static void ipip_tunnel_destroy(struct device *dev)
X {
X if (dev == &ipip_fb_tunnel_dev) {
- net_serialize_enter();
X tunnels_wc[0] = NULL;
- net_serialize_leave();
+ synchronize_bh();
X } else {
X ipip_tunnel_unlink((struct ip_tunnel*)dev->priv);
X kfree(dev);
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/ipmr.c linux/net/ipv4/ipmr.c
--- v2.2.4/linux/net/ipv4/ipmr.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/ipmr.c Thu Mar 25 09:23:34 1999
@@ -9,7 +9,7 @@
X * as published by the Free Software Foundation; either version
X * 2 of the License, or (at your option) any later version.
X *
- * Version: $Id: ipmr.c,v 1.39 1999/03/21 05:22:44 davem Exp $
+ * Version: $Id: ipmr.c,v 1.40 1999/03/25 10:04:25 davem Exp $
X *
X * Fixes:
X * Michael Chastain : Incorrect size of copying.
@@ -661,9 +661,10 @@
X {
X if (sk == mroute_socket) {
X ipv4_devconf.mc_forwarding = 0;
- net_serialize_enter();
+
X mroute_socket=NULL;
- net_serialize_leave();
+ synchronize_bh();
+
X mroute_close(sk);
X }
X }
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/route.c linux/net/ipv4/route.c
--- v2.2.4/linux/net/ipv4/route.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/route.c Thu Mar 25 09:23:34 1999
@@ -5,7 +5,7 @@
X *
X * ROUTE - implementation of the IP router.
X *
- * Version: $Id: route.c,v 1.64 1999/03/23 21:21:13 davem Exp $
+ * Version: $Id: route.c,v 1.65 1999/03/25 10:04:35 davem Exp $
X *
X * Authors: Ross Biro, <bi...@leland.Stanford.Edu>
X * Fred N. van Kempen, <wal...@uWalt.NL.Mugnet.ORG>
@@ -338,11 +338,11 @@
X
X rt_deadline = 0;
X
- net_serialize_enter();
+ start_bh_atomic();
X for (i=0; i<RT_HASH_DIVISOR; i++) {
X if ((rth = xchg(&rt_hash_table[i], NULL)) == NULL)
X continue;
- net_serialize_leave();
+ end_bh_atomic();
X
X for (; rth; rth=next) {
X next = rth->u.rt_next;
@@ -350,9 +350,9 @@
X rt_free(rth);
X }
X
- net_serialize_enter();
+ start_bh_atomic();
X }
- net_serialize_leave();
+ end_bh_atomic();
X }
X
X void rt_cache_flush(int delay)
diff -u --recursive --new-file v2.2.4/linux/net/ipv4/tcp_ipv4.c linux/net/ipv4/tcp_ipv4.c
--- v2.2.4/linux/net/ipv4/tcp_ipv4.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv4/tcp_ipv4.c Sun Mar 28 09:07:47 1999
@@ -5,7 +5,7 @@
X *
X * Implementation of the Transmission Control Protocol(TCP).
X *
- * Version: $Id: tcp_ipv4.c,v 1.170 1999/03/21 05:22:47 davem Exp $
+ * Version: $Id: tcp_ipv4.c,v 1.171 1999/03/28 10:18:26 davem Exp $
X *
X * IPv4 specific functions
X *
@@ -1305,6 +1305,9 @@
X
X if(newsk != NULL) {
X struct tcp_opt *newtp;
+#ifdef CONFIG_FILTER
+ struct sk_filter *filter;
+#endif
X
X memcpy(newsk, sk, sizeof(*newsk));
X newsk->sklist_next = NULL;
@@ -1326,8 +1329,8 @@
X skb_queue_head_init(&newsk->back_log);
X skb_queue_head_init(&newsk->error_queue);
X #ifdef CONFIG_FILTER
- if (newsk->filter)
- sk_filter_charge(newsk, newsk->filter);
+ if ((filter = newsk->filter) != NULL)
+ sk_filter_charge(newsk, filter);
X #endif
X
X /* Now setup tcp_opt */
@@ -1559,9 +1562,9 @@
X
X int tcp_v4_do_rcv(struct sock *sk, struct sk_buff *skb)
X {
-
X #ifdef CONFIG_FILTER
- if (sk->filter && sk_filter(skb, sk->filter))
+ struct sk_filter *filter = sk->filter;
+ if (filter && sk_filter(skb, filter))
X goto discard;
X #endif /* CONFIG_FILTER */
X
diff -u --recursive --new-file v2.2.4/linux/net/ipv6/addrconf.c linux/net/ipv6/addrconf.c
--- v2.2.4/linux/net/ipv6/addrconf.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv6/addrconf.c Thu Mar 25 09:23:34 1999
@@ -5,7 +5,7 @@
X * Authors:
X * Pedro Roque <ro...@di.fc.ul.pt>
X *
- * $Id: addrconf.c,v 1.47 1999/03/21 05:22:50 davem Exp $
+ * $Id: addrconf.c,v 1.48 1999/03/25 10:04:43 davem Exp $
X *
X * This program is free software; you can redistribute it and/or
X * modify it under the terms of the GNU General Public License
@@ -340,9 +340,9 @@
X
X for (; iter; iter = iter->lst_next) {
X if (iter == ifp) {
- net_serialize_enter();
X *back = ifp->lst_next;
- net_serialize_leave();
+ synchronize_bh();
+
X ifp->lst_next = NULL;
X break;
X }
@@ -354,9 +354,9 @@
X
X for (; iter; iter = iter->if_next) {
X if (iter == ifp) {
- net_serialize_enter();
X *back = ifp->if_next;
- net_serialize_leave();
+ synchronize_bh();
+
X ifp->if_next = NULL;
X break;
X }
diff -u --recursive --new-file v2.2.4/linux/net/ipv6/ipv6_sockglue.c linux/net/ipv6/ipv6_sockglue.c
--- v2.2.4/linux/net/ipv6/ipv6_sockglue.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv6/ipv6_sockglue.c Thu Mar 25 09:23:34 1999
@@ -7,7 +7,7 @@
X *
X * Based on linux/net/ipv4/ip_sockglue.c
X *
- * $Id: ipv6_sockglue.c,v 1.25 1999/03/21 05:22:54 davem Exp $
+ * $Id: ipv6_sockglue.c,v 1.26 1999/03/25 10:04:53 davem Exp $
X *
X * This program is free software; you can redistribute it and/or
X * modify it under the terms of the GNU General Public License
@@ -86,9 +86,10 @@
X kfree(new_ra);
X return -EADDRINUSE;
X }
- net_serialize_enter();
+
X *rap = ra->next;
- net_serialize_leave();
+ synchronize_bh();
+
X if (ra->destructor)
X ra->destructor(sk);
X kfree(ra);
diff -u --recursive --new-file v2.2.4/linux/net/ipv6/mcast.c linux/net/ipv6/mcast.c
--- v2.2.4/linux/net/ipv6/mcast.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv6/mcast.c Thu Mar 25 09:23:34 1999
@@ -5,7 +5,7 @@
X * Authors:
X * Pedro Roque <ro...@di.fc.ul.pt>
X *
- * $Id: mcast.c,v 1.18 1999/03/21 05:22:55 davem Exp $
+ * $Id: mcast.c,v 1.19 1999/03/25 10:04:50 davem Exp $
X *
X * Based on linux/ipv4/igmp.c and linux/ipv4/ip_sockglue.c
X *
@@ -132,9 +132,10 @@
X if (mc_lst->ifindex == ifindex &&
X ipv6_addr_cmp(&mc_lst->addr, addr) == 0) {
X struct device *dev;
- net_serialize_enter();
+
X *lnk = mc_lst->next;
- net_serialize_leave();
+ synchronize_bh();
+
X if ((dev = dev_get_by_index(ifindex)) != NULL)
X ipv6_dev_mc_dec(dev, &mc_lst->addr);
X sock_kfree_s(sk, mc_lst, sizeof(*mc_lst));
@@ -254,9 +255,8 @@
X
X for (lnk = &idev->mc_list; (iter = *lnk) != NULL; lnk = &iter->if_next) {
X if (iter == ma) {
- net_serialize_enter();
X *lnk = iter->if_next;
- net_serialize_leave();
+ synchronize_bh();
X return;
X }
X }
@@ -277,9 +277,10 @@
X if (ipv6_addr_cmp(&ma->mca_addr, addr) == 0 && ma->dev == dev) {
X if (atomic_dec_and_test(&ma->mca_users)) {
X igmp6_group_dropped(ma);
- net_serialize_enter();
+
X *lnk = ma->next;
- net_serialize_leave();
+ synchronize_bh();
+
X ipv6_mca_remove(dev, ma);
X kfree(ma);
X }
@@ -595,9 +596,8 @@
X
X for (lnk = &inet6_mcast_lst[hash]; *lnk; lnk = &(*lnk)->next) {
X if (*lnk == i) {
- net_serialize_enter();
X *lnk = i->next;
- net_serialize_leave();
+ synchronize_bh();
X break;
X }
X }
diff -u --recursive --new-file v2.2.4/linux/net/ipv6/sit.c linux/net/ipv6/sit.c
--- v2.2.4/linux/net/ipv6/sit.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv6/sit.c Thu Mar 25 09:23:34 1999
@@ -6,7 +6,7 @@
X * Pedro Roque <ro...@di.fc.ul.pt>
X * Alexey Kuznetsov <kuz...@ms2.inr.ac.ru>
X *
- * $Id: sit.c,v 1.30 1999/03/21 05:22:58 davem Exp $
+ * $Id: sit.c,v 1.31 1999/03/25 10:04:55 davem Exp $
X *
X * This program is free software; you can redistribute it and/or
X * modify it under the terms of the GNU General Public License
@@ -118,9 +118,8 @@
X
X for (tp = ipip6_bucket(t); *tp; tp = &(*tp)->next) {
X if (t == *tp) {
- net_serialize_enter();
X *tp = t->next;
- net_serialize_leave();
+ synchronize_bh();
X break;
X }
X }
@@ -130,10 +129,9 @@
X {
X struct ip_tunnel **tp = ipip6_bucket(t);
X
- net_serialize_enter();
X t->next = *tp;
+ wmb();
X *tp = t;
- net_serialize_leave();
X }
X
X struct ip_tunnel * ipip6_tunnel_locate(struct ip_tunnel_parm *parms, int create)
@@ -200,9 +198,8 @@
X static void ipip6_tunnel_destroy(struct device *dev)
X {
X if (dev == &ipip6_fb_tunnel_dev) {
- net_serialize_enter();
X tunnels_wc[0] = NULL;
- net_serialize_leave();
+ synchronize_bh();
X return;
X } else {
X ipip6_tunnel_unlink((struct ip_tunnel*)dev->priv);
diff -u --recursive --new-file v2.2.4/linux/net/ipv6/tcp_ipv6.c linux/net/ipv6/tcp_ipv6.c
--- v2.2.4/linux/net/ipv6/tcp_ipv6.c Tue Mar 23 14:35:48 1999
+++ linux/net/ipv6/tcp_ipv6.c Sun Mar 28 09:07:47 1999
@@ -5,7 +5,7 @@
X * Authors:
X * Pedro Roque <ro...@di.fc.ul.pt>
X *
- * $Id: tcp_ipv6.c,v 1.100 1999/03/21 05:22:59 davem Exp $
+ * $Id: tcp_ipv6.c,v 1.101 1999/03/28 10:18:30 davem Exp $
X *
X * Based on:
X * linux/net/ipv4/tcp.c


@@ -1181,6 +1181,9 @@
X

X static int tcp_v6_do_rcv(struct sock *sk, struct sk_buff *skb)
X {
+#ifdef CONFIG_FILTER
+ struct sk_filter *filter;
+#endif
X int users = 0;
X
X /* Imagine: socket is IPv6. IPv4 packet arrives,
@@ -1195,7 +1198,8 @@
X return tcp_v4_do_rcv(sk, skb);
X
X #ifdef CONFIG_FILTER
- if (sk->filter && sk_filter(skb, sk->filter))
+ filter = sk->filter;
+ if (filter && sk_filter(skb, filter))
X goto discard;
X #endif /* CONFIG_FILTER */
X
diff -u --recursive --new-file v2.2.4/linux/net/netlink/af_netlink.c linux/net/netlink/af_netlink.c
--- v2.2.4/linux/net/netlink/af_netlink.c Tue Mar 23 14:35:48 1999
+++ linux/net/netlink/af_netlink.c Thu Mar 25 09:23:34 1999
@@ -747,9 +747,9 @@
X {
X struct socket *sock = netlink_kernel[unit];
X
- net_serialize_enter();
X netlink_kernel[unit] = NULL;
- net_serialize_leave();
+ synchronize_bh();
+
X sock_release(sock);
X }
X
diff -u --recursive --new-file v2.2.4/linux/net/sched/cls_api.c linux/net/sched/cls_api.c
--- v2.2.4/linux/net/sched/cls_api.c Tue Mar 23 14:35:48 1999
+++ linux/net/sched/cls_api.c Thu Mar 25 09:23:34 1999
@@ -226,9 +226,9 @@
X
X if (fh == 0) {
X if (n->nlmsg_type == RTM_DELTFILTER && t->tcm_handle == 0) {
- net_serialize_enter();
X *back = tp->next;
- net_serialize_leave();
+ synchronize_bh();
+
X tp->ops->destroy(tp);
X kfree(tp);
X err = 0;
diff -u --recursive --new-file v2.2.4/linux/net/sched/cls_fw.c linux/net/sched/cls_fw.c
--- v2.2.4/linux/net/sched/cls_fw.c Tue Mar 23 14:35:48 1999
+++ linux/net/sched/cls_fw.c Thu Mar 25 09:23:34 1999
@@ -157,9 +157,8 @@
X if (*fp == f) {
X unsigned long cl;
X
- net_serialize_enter();
X *fp = f->next;
- net_serialize_leave();
+ synchronize_bh();
X
X if ((cl = cls_set_class(&f->res.class, 0)) != 0)
X tp->q->ops->cl_ops->unbind_tcf(tp->q, cl);
@@ -207,9 +206,10 @@
X #ifdef CONFIG_NET_CLS_POLICE
X if (tb[TCA_FW_POLICE-1]) {
X struct tcf_police *police = tcf_police_locate(tb[TCA_FW_POLICE-1], tca[TCA_RATE-1]);
- net_serialize_enter();
+
X police = xchg(&f->police, police);
- net_serialize_leave();
+ synchronize_bh();
+
X tcf_police_release(police);
X }
X #endif
@@ -224,9 +224,9 @@
X if (head == NULL)
X return -ENOBUFS;
X memset(head, 0, sizeof(*head));
- net_serialize_enter();
+
X tp->root = head;
- net_serialize_leave();
+ synchronize_bh();
X }
X
X f = kmalloc(sizeof(struct fw_filter), GFP_KERNEL);
@@ -250,9 +250,9 @@
X #endif
X
X f->next = head->ht[fw_hash(handle)];
- net_serialize_enter();
+ wmb();
X head->ht[fw_hash(handle)] = f;
- net_serialize_leave();
+
X *arg = (unsigned long)f;
X return 0;
X
@@ -303,7 +303,11 @@
X
X t->tcm_handle = f->id;
X
- if (!f->res.classid && !f->police)
+ if (!f->res.classid
+#ifdef CONFIG_NET_CLS_POLICE
+ && !f->police
+#endif
+ )
X return skb->len;
X
X rta = (struct rtattr*)b;
diff -u --recursive --new-file v2.2.4/linux/net/sched/cls_route.c linux/net/sched/cls_route.c
--- v2.2.4/linux/net/sched/cls_route.c Tue Mar 23 14:35:48 1999
+++ linux/net/sched/cls_route.c Thu Mar 25 09:23:34 1999
@@ -329,9 +329,9 @@
X if (*fp == f) {
X unsigned long cl;
X
- net_serialize_enter();
X *fp = f->next;
- net_serialize_leave();
+ synchronize_bh();
+
X route4_reset_fastmap(head, f->id);
X
X if ((cl = cls_set_class(&f->res.class, 0)) != 0)
@@ -349,9 +349,9 @@
X return 0;
X
X /* OK, session has no flows */
- net_serialize_enter();
X head->table[to_hash(h)] = NULL;
- net_serialize_leave();
+ synchronize_bh();
+
X kfree(b);
X return 0;
X }
@@ -394,9 +394,10 @@
X #ifdef CONFIG_NET_CLS_POLICE
X if (tb[TCA_ROUTE4_POLICE-1]) {
X struct tcf_police *police = tcf_police_locate(tb[TCA_ROUTE4_POLICE-1], tca[TCA_RATE-1]);
- net_serialize_enter();
+
X police = xchg(&f->police, police);
- net_serialize_leave();
+ synchronize_bh();
+
X tcf_police_release(police);
X }
X #endif
@@ -410,9 +411,9 @@
X if (head == NULL)
X return -ENOBUFS;
X memset(head, 0, sizeof(struct route4_head));
- net_serialize_enter();
+
X tp->root = head;
- net_serialize_leave();
+ synchronize_bh();
X }
X
X f = kmalloc(sizeof(struct route4_filter), GFP_KERNEL);
@@ -473,9 +474,9 @@
X if (b == NULL)
X goto errout;
X memset(b, 0, sizeof(*b));
- net_serialize_enter();
+
X head->table[h1] = b;
- net_serialize_leave();
+ synchronize_bh();
X }
X f->bkt = b;
X
@@ -495,9 +496,9 @@
X #endif
X
X f->next = f1;
- net_serialize_enter();
+ wmb();
X *ins_f = f;
- net_serialize_leave();
+
X route4_reset_fastmap(head, f->id);
X *arg = (unsigned long)f;
X return 0;
diff -u --recursive --new-file v2.2.4/linux/net/sched/cls_rsvp.h linux/net/sched/cls_rsvp.h
--- v2.2.4/linux/net/sched/cls_rsvp.h Tue Mar 23 14:35:48 1999
+++ linux/net/sched/cls_rsvp.h Thu Mar 25 09:23:34 1999
@@ -149,7 +149,7 @@
X struct iphdr *nhptr = skb->nh.iph;
X #endif
X
-#if !defined( __i386__) && !defined(__m68k__)
+#if !defined( __i386__) && !defined(__mc68000__)
X if ((unsigned long)nhptr & 3)
X return -1;
X #endif
@@ -309,9 +309,9 @@
X if (*fp == f) {
X unsigned long cl;
X
- net_serialize_enter();
+
X *fp = f->next;
- net_serialize_leave();
+ synchronize_bh();
X
X if ((cl = cls_set_class(&f->res.class, 0)) != 0)
X tp->q->ops->cl_ops->unbind_tcf(tp->q, cl);
@@ -332,9 +332,9 @@
X for (sp = &((struct rsvp_head*)tp->root)->ht[h&0xFF];
X *sp; sp = &(*sp)->next) {
X if (*sp == s) {
- net_serialize_enter();
X *sp = s->next;
- net_serialize_leave();
+ synchronize_bh();
+
X kfree(s);
X return 0;
X }
@@ -453,9 +453,10 @@
X #ifdef CONFIG_NET_CLS_POLICE
X if (tb[TCA_RSVP_POLICE-1]) {
X struct tcf_police *police = tcf_police_locate(tb[TCA_RSVP_POLICE-1], tca[TCA_RATE-1]);
- net_serialize_enter();
+
X police = xchg(&f->police, police);
- net_serialize_leave();
+ synchronize_bh();
+
X tcf_police_release(police);
X }
X #endif
@@ -545,9 +546,9 @@
X if (((*fp)->spi.mask&f->spi.mask) != f->spi.mask)
X break;
X f->next = *fp;
- net_serialize_enter();
+ wmb();
X *fp = f;
- net_serialize_leave();
+
X *arg = (unsigned long)f;
X return 0;
X }
@@ -569,9 +570,8 @@
X break;
X }
X s->next = *sp;
- net_serialize_enter();
+ wmb();
X *sp = s;
- net_serialize_leave();
X
X goto insert;
X
diff -u --recursive --new-file v2.2.4/linux/net/sched/cls_u32.c linux/net/sched/cls_u32.c
--- v2.2.4/linux/net/sched/cls_u32.c Tue Mar 23 14:35:48 1999
+++ linux/net/sched/cls_u32.c Thu Mar 25 09:23:34 1999
@@ -114,7 +114,7 @@
X int sel = 0;
X int i;
X
-#if !defined(__i386__) && !defined(__m68k__)
+#if !defined(__i386__) && !defined(__mc68000__)
X if ((unsigned long)ptr & 3)
X return -1;
X #endif
@@ -326,9 +326,8 @@
X if (ht) {
X for (kp = &ht->ht[TC_U32_HASH(key->handle)]; *kp; kp = &(*kp)->next) {
X if (*kp == key) {
- net_serialize_enter();
X *kp = key->next;
- net_serialize_leave();
+ synchronize_bh();
X
X u32_destroy_key(tp, key);
X return 0;
@@ -346,9 +345,9 @@
X
X for (h=0; h<=ht->divisor; h++) {
X while ((n = ht->ht[h]) != NULL) {
- net_serialize_enter();
X ht->ht[h] = n->next;
- net_serialize_leave();
+ synchronize_bh();
+
X u32_destroy_key(tp, n);
X }
X }
@@ -466,9 +465,8 @@
X ht_down->refcnt++;
X }
X
- net_serialize_enter();
X ht_down = xchg(&n->ht_down, ht_down);
- net_serialize_leave();
+ synchronize_bh();
X
X if (ht_down)
X ht_down->refcnt--;
@@ -484,9 +482,10 @@
X #ifdef CONFIG_NET_CLS_POLICE
X if (tb[TCA_U32_POLICE-1]) {
X struct tcf_police *police = tcf_police_locate(tb[TCA_U32_POLICE-1], est);
- net_serialize_enter();
+
X police = xchg(&n->police, police);
- net_serialize_leave();
+ synchronize_bh();
+
X tcf_police_release(police);
X }
X #endif
@@ -588,10 +587,11 @@
X for (ins = &ht->ht[TC_U32_HASH(handle)]; *ins; ins = &(*ins)->next)
X if (TC_U32_NODE(handle) < TC_U32_NODE((*ins)->handle))
X break;
- net_serialize_enter();
+
X n->next = *ins;
+ wmb();
X *ins = n;
- net_serialize_leave();
+
X *arg = (unsigned long)n;
X return 0;
X }
diff -u --recursive --new-file v2.2.4/linux/net/sched/estimator.c linux/net/sched/estimator.c
--- v2.2.4/linux/net/sched/estimator.c Tue Mar 23 14:35:48 1999
+++ linux/net/sched/estimator.c Thu Mar 25 09:23:34 1999
@@ -171,9 +171,10 @@
X pest = &est->next;
X continue;
X }
- net_serialize_enter();
+
X *pest = est->next;
- net_serialize_leave();
+ synchronize_bh();
+
X kfree(est);
X killed++;


SHAR_EOF
true || echo 'restore of patch-2.2.5 failed'
fi

echo 'End of part 7'
echo 'File patch-2.2.5 is continued in part 8'
echo 8 > _shar_seq_.tmp

Thomas...@ciw.uni-karlsruhe.de

unread,
Apr 5, 1999, 3:00:00 AM4/5/99
to
Archive-name: v2.2/patch-2.2.5/part8

#!/bin/sh
# this is part 8 of a 8 - part archive


# do not concatenate these parts, unpack them in order with /bin/sh
# file patch-2.2.5 continued
if test ! -r _shar_seq_.tmp; then
echo 'Please unpack part 1 first!'
exit 1
fi
(read Scheck

if test "$Scheck" != 8; then


echo Please unpack part "$Scheck" next!
exit 1
else
exit 0
fi
) < _shar_seq_.tmp || exit 1
if test ! -f _shar_wnt_.tmp; then
echo 'x - still skipping patch-2.2.5'
else
echo 'x - continuing with patch-2.2.5'
sed 's/^X//' << 'SHAR_EOF' >> 'patch-2.2.5' &&
X }

diff -u --recursive --new-file v2.2.4/linux/net/sched/sch_prio.c linux/net/sched/sch_prio.c
--- v2.2.4/linux/net/sched/sch_prio.c Tue Mar 23 14:35:48 1999
+++ linux/net/sched/sch_prio.c Thu Mar 25 09:23:34 1999
@@ -195,9 +195,9 @@
X struct Qdisc *child;
X child = qdisc_create_dflt(sch->dev, &pfifo_qdisc_ops);
X if (child) {
- net_serialize_enter();
X child = xchg(&q->queues[band], child);


- net_serialize_leave();
+ synchronize_bh();
+

X if (child != &noop_qdisc)
X qdisc_destroy(child);
X }
diff -u --recursive --new-file v2.2.4/linux/net/unix/af_unix.c linux/net/unix/af_unix.c
--- v2.2.4/linux/net/unix/af_unix.c Tue Mar 23 14:35:48 1999
+++ linux/net/unix/af_unix.c Thu Mar 25 09:23:34 1999
@@ -8,7 +8,7 @@


X * as published by the Free Software Foundation; either version
X * 2 of the License, or (at your option) any later version.
X *

- * Version: $Id: af_unix.c,v 1.74 1999/03/21 05:23:16 davem Exp $
+ * Version: $Id: af_unix.c,v 1.75 1999/03/22 05:02:45 davem Exp $


X *
X * Fixes:

X * Linus Torvalds : Assorted bug cures.
Binary files v2.2.4/linux/scripts/ksymoops/ksymoops and linux/scripts/ksymoops/ksymoops differ
diff -u --recursive --new-file v2.2.4/linux/scripts/ksymoops/oops.c linux/scripts/ksymoops/oops.c
--- v2.2.4/linux/scripts/ksymoops/oops.c Tue Mar 23 14:35:48 1999
+++ linux/scripts/ksymoops/oops.c Wed Mar 24 16:07:59 1999
@@ -288,9 +288,11 @@
X errno = 0;
X eip_relative = strtoul(string[5], NULL, 16);
X if (errno) {
+#if 0
X /* Try strtoull also, e.g. sparc binutils print <_PC+0xfffffffffffffd58> */
X errno = 0;
X eip_relative = strtoull(string[5], NULL, 16);
+#endif
X if (errno) {
X fprintf(stderr,
X "%s Invalid hex value in objdump line, "


SHAR_EOF
true || echo 'restore of patch-2.2.5 failed'

echo 'File patch-2.2.5 is complete' &&
chmod 644 patch-2.2.5 ||


echo 'restore of patch-2.2.5 failed'

Cksum="`cksum < 'patch-2.2.5'`"
if ! test "666031713 405798" = "$Cksum"
then
echo 'patch-2.2.5: original Checksum 666031713 405798, current one' "$Cksum"
rm -f _shar_wnt_.tmp
rm -f _shar_seq_.tmp
exit 1
fi
rm -f _shar_wnt_.tmp
fi
rm -f _shar_seq_.tmp
echo 'You have unpacked the last part.'

Thomas...@ciw.uni-karlsruhe.de

unread,
Apr 5, 1999, 3:00:00 AM4/5/99
to
Archive-name: v2.2/patch-2.2.5/part3

#!/bin/sh
# this is part 3 of a 8 - part archive


# do not concatenate these parts, unpack them in order with /bin/sh
# file patch-2.2.5 continued
if test ! -r _shar_seq_.tmp; then
echo 'Please unpack part 1 first!'
exit 1
fi
(read Scheck

if test "$Scheck" != 3; then


echo Please unpack part "$Scheck" next!
exit 1
else
exit 0
fi
) < _shar_seq_.tmp || exit 1
if test ! -f _shar_wnt_.tmp; then
echo 'x - still skipping patch-2.2.5'
else
echo 'x - continuing with patch-2.2.5'
sed 's/^X//' << 'SHAR_EOF' >> 'patch-2.2.5' &&

+#define BDCR 0x12 /* Burst/Dwell Control Register (shared) */
+#define DIVR 0x14 /* DMA Interrupt Vector Register (shared) */
+#define DICR 0x18 /* DMA Interrupt Control Register (shared) */
+#define CDIR 0x1a /* Clear DMA Interrupt Register (shared) */
+#define SDIR 0x1c /* Set DMA Interrupt Register (shared) */
+
+#define TDMR 0x02 /* Transmit DMA mode Register */
+#define TDIAR 0x1e /* Transmit DMA Interrupt Arm Register */
+#define TBCR 0x2a /* Transmit Byte count Register */
+#define TARL 0x2c /* Transmit Address Register (low) */
+#define TARU 0x2e /* Transmit Address Register (high) */
+#define NTBCR 0x3a /* Next Transmit Byte count Register */
+#define NTARL 0x3c /* Next Transmit Address Register (low) */
+#define NTARU 0x3e /* Next Transmit Address Register (high) */
+
+#define RDMR 0x82 /* Receive DMA mode Register (non-shared) */
+#define RDIAR 0x9e /* Receive DMA Interrupt Arm Register */
+#define RBCR 0xaa /* Receive Byte count Register */
+#define RARL 0xac /* Receive Address Register (low) */
+#define RARU 0xae /* Receive Address Register (high) */
+#define NRBCR 0xba /* Next Receive Byte count Register */
+#define NRARL 0xbc /* Next Receive Address Register (low) */
+#define NRARU 0xbe /* Next Receive Address Register (high) */
+
+
+/*
+ * MACRO DEFINITIONS FOR MODEM STATUS BITS
+ */
+
+#define MODEMSTATUS_DTR 0x80
+#define MODEMSTATUS_DSR 0x40
+#define MODEMSTATUS_RTS 0x20
+#define MODEMSTATUS_CTS 0x10
+#define MODEMSTATUS_RI 0x04
+#define MODEMSTATUS_DCD 0x01
+
+
+/*
+ * Channel Command/Address Register (CCAR) Command Codes
+ */
+
+#define RTCmd_Null 0x0000
+#define RTCmd_ResetHighestIus 0x1000
+#define RTCmd_TriggerChannelLoadDma 0x2000
+#define RTCmd_TriggerRxDma 0x2800
+#define RTCmd_TriggerTxDma 0x3000
+#define RTCmd_TriggerRxAndTxDma 0x3800
+#define RTCmd_PurgeRxFifo 0x4800
+#define RTCmd_PurgeTxFifo 0x5000
+#define RTCmd_PurgeRxAndTxFifo 0x5800
+#define RTCmd_LoadRcc 0x6800
+#define RTCmd_LoadTcc 0x7000
+#define RTCmd_LoadRccAndTcc 0x7800
+#define RTCmd_LoadTC0 0x8800
+#define RTCmd_LoadTC1 0x9000
+#define RTCmd_LoadTC0AndTC1 0x9800
+#define RTCmd_SerialDataLSBFirst 0xa000
+#define RTCmd_SerialDataMSBFirst 0xa800
+#define RTCmd_SelectBigEndian 0xb000
+#define RTCmd_SelectLittleEndian 0xb800
+
+
+/*
+ * DMA Command/Address Register (DCAR) Command Codes
+ */
+
+#define DmaCmd_Null 0x0000
+#define DmaCmd_ResetTxChannel 0x1000
+#define DmaCmd_ResetRxChannel 0x1200
+#define DmaCmd_StartTxChannel 0x2000
+#define DmaCmd_StartRxChannel 0x2200
+#define DmaCmd_ContinueTxChannel 0x3000
+#define DmaCmd_ContinueRxChannel 0x3200
+#define DmaCmd_PauseTxChannel 0x4000
+#define DmaCmd_PauseRxChannel 0x4200
+#define DmaCmd_AbortTxChannel 0x5000
+#define DmaCmd_AbortRxChannel 0x5200
+#define DmaCmd_InitTxChannel 0x7000
+#define DmaCmd_InitRxChannel 0x7200
+#define DmaCmd_ResetHighestDmaIus 0x8000
+#define DmaCmd_ResetAllChannels 0x9000
+#define DmaCmd_StartAllChannels 0xa000
+#define DmaCmd_ContinueAllChannels 0xb000
+#define DmaCmd_PauseAllChannels 0xc000
+#define DmaCmd_AbortAllChannels 0xd000
+#define DmaCmd_InitAllChannels 0xf000
+
+#define TCmd_Null 0x0000
+#define TCmd_ClearTxCRC 0x2000
+#define TCmd_SelectTicrTtsaData 0x4000
+#define TCmd_SelectTicrTxFifostatus 0x5000
+#define TCmd_SelectTicrIntLevel 0x6000
+#define TCmd_SelectTicrdma_level 0x7000
+#define TCmd_SendFrame 0x8000
+#define TCmd_SendAbort 0x9000
+#define TCmd_EnableDleInsertion 0xc000
+#define TCmd_DisableDleInsertion 0xd000
+#define TCmd_ClearEofEom 0xe000
+#define TCmd_SetEofEom 0xf000
+
+#define RCmd_Null 0x0000
+#define RCmd_ClearRxCRC 0x2000
+#define RCmd_EnterHuntmode 0x3000
+#define RCmd_SelectRicrRtsaData 0x4000
+#define RCmd_SelectRicrRxFifostatus 0x5000
+#define RCmd_SelectRicrIntLevel 0x6000
+#define RCmd_SelectRicrdma_level 0x7000
+
+/*
+ * Bits for enabling and disabling IRQs in Interrupt Control Register (ICR)
+ */
+
+#define RECEIVE_STATUS BIT5
+#define RECEIVE_DATA BIT4
+#define TRANSMIT_STATUS BIT3
+#define TRANSMIT_DATA BIT2
+#define IO_PIN BIT1
+#define MISC BIT0
+
+
+/*
+ * Receive status Bits in Receive Command/status Register RCSR
+ */
+
+#define RXSTATUS_SHORT_FRAME BIT8
+#define RXSTATUS_CODE_VIOLATION BIT8
+#define RXSTATUS_EXITED_HUNT BIT7
+#define RXSTATUS_IDLE_RECEIVED BIT6
+#define RXSTATUS_BREAK_RECEIVED BIT5
+#define RXSTATUS_ABORT_RECEIVED BIT5
+#define RXSTATUS_RXBOUND BIT4
+#define RXSTATUS_CRC_ERROR BIT3
+#define RXSTATUS_FRAMING_ERROR BIT3
+#define RXSTATUS_ABORT BIT2
+#define RXSTATUS_PARITY_ERROR BIT2
+#define RXSTATUS_OVERRUN BIT1
+#define RXSTATUS_DATA_AVAILABLE BIT0
+#define RXSTATUS_ALL 0x01f6
+#define usc_UnlatchRxstatusBits(a,b) usc_OutReg( (a), RCSR, (u16)((b) & RXSTATUS_ALL) )
+
+/*
+ * Values for setting transmit idle mode in
+ * Transmit Control/status Register (TCSR)
+ */
+#define IDLEMODE_FLAGS 0x0000
+#define IDLEMODE_ALT_ONE_ZERO 0x0100
+#define IDLEMODE_ZERO 0x0200
+#define IDLEMODE_ONE 0x0300
+#define IDLEMODE_ALT_MARK_SPACE 0x0500
+#define IDLEMODE_SPACE 0x0600
+#define IDLEMODE_MARK 0x0700
+
+/*
+ * Transmit status Bits in Transmit Command/status Register (TCSR)
+ */
+
+#define TCSR_PRESERVE 0x0700
+
+#define TXSTATUS_PREAMBLE_SENT BIT7
+#define TXSTATUS_IDLE_SENT BIT6
+#define TXSTATUS_ABORT_SENT BIT5
+#define TXSTATUS_EOF_SENT BIT4
+#define TXSTATUS_EOM_SENT BIT4
+#define TXSTATUS_CRC_SENT BIT3
+#define TXSTATUS_ALL_SENT BIT2
+#define TXSTATUS_UNDERRUN BIT1
+#define TXSTATUS_FIFO_EMPTY BIT0
+#define TXSTATUS_ALL 0x00fa
+#define usc_UnlatchTxstatusBits(a,b) usc_OutReg( (a), TCSR, (u16)((a)->usc_idle_mode + ((b) & 0x00FF)) )
+
+
+#define MISCSTATUS_RXC_LATCHED BIT15
+#define MISCSTATUS_RXC BIT14
+#define MISCSTATUS_TXC_LATCHED BIT13
+#define MISCSTATUS_TXC BIT12
+#define MISCSTATUS_RI_LATCHED BIT11
+#define MISCSTATUS_RI BIT10
+#define MISCSTATUS_DSR_LATCHED BIT9
+#define MISCSTATUS_DSR BIT8
+#define MISCSTATUS_DCD_LATCHED BIT7
+#define MISCSTATUS_DCD BIT6
+#define MISCSTATUS_CTS_LATCHED BIT5
+#define MISCSTATUS_CTS BIT4
+#define MISCSTATUS_RCC_UNDERRUN BIT3
+#define MISCSTATUS_DPLL_NO_SYNC BIT2
+#define MISCSTATUS_BRG1_ZERO BIT1
+#define MISCSTATUS_BRG0_ZERO BIT0
+
+#define usc_UnlatchIostatusBits(a,b) usc_OutReg((a),MISR,(u16)((b) & 0xaaa0))
+#define usc_UnlatchMiscstatusBits(a,b) usc_OutReg((a),MISR,(u16)((b) & 0x000f))
+
+#define SICR_RXC_ACTIVE BIT15
+#define SICR_RXC_INACTIVE BIT14
+#define SICR_RXC (BIT15+BIT14)
+#define SICR_TXC_ACTIVE BIT13
+#define SICR_TXC_INACTIVE BIT12
+#define SICR_TXC (BIT13+BIT12)
+#define SICR_RI_ACTIVE BIT11
+#define SICR_RI_INACTIVE BIT10
+#define SICR_RI (BIT11+BIT10)
+#define SICR_DSR_ACTIVE BIT9
+#define SICR_DSR_INACTIVE BIT8
+#define SICR_DSR (BIT9+BIT8)
+#define SICR_DCD_ACTIVE BIT7
+#define SICR_DCD_INACTIVE BIT6
+#define SICR_DCD (BIT7+BIT6)
+#define SICR_CTS_ACTIVE BIT5
+#define SICR_CTS_INACTIVE BIT4
+#define SICR_CTS (BIT5+BIT4)
+#define SICR_RCC_UNDERFLOW BIT3
+#define SICR_DPLL_NO_SYNC BIT2
+#define SICR_BRG1_ZERO BIT1
+#define SICR_BRG0_ZERO BIT0
+
+void usc_DisableMasterIrqBit( struct mgsl_struct *info );
+void usc_EnableMasterIrqBit( struct mgsl_struct *info );
+void usc_EnableInterrupts( struct mgsl_struct *info, u16 IrqMask );
+void usc_DisableInterrupts( struct mgsl_struct *info, u16 IrqMask );
+void usc_ClearIrqPendingBits( struct mgsl_struct *info, u16 IrqMask );
+
+#define usc_EnableInterrupts( a, b ) \
+ usc_OutReg( (a), ICR, (u16)((usc_InReg((a),ICR) & 0xff00) + 0xc0 + (b)) )
+
+#define usc_DisableInterrupts( a, b ) \
+ usc_OutReg( (a), ICR, (u16)((usc_InReg((a),ICR) & 0xff00) + 0x80 + (b)) )
+
+#define usc_EnableMasterIrqBit(a) \
+ usc_OutReg( (a), ICR, (u16)((usc_InReg((a),ICR) & 0x0f00) + 0xb000) )
+
+#define usc_DisableMasterIrqBit(a) \
+ usc_OutReg( (a), ICR, (u16)(usc_InReg((a),ICR) & 0x7f00) )
+
+#define usc_ClearIrqPendingBits( a, b ) usc_OutReg( (a), DCCR, 0x40 + (b) )
+
+/*
+ * Transmit status Bits in Transmit Control status Register (TCSR)
+ * and Transmit Interrupt Control Register (TICR) (except BIT2, BIT0)
+ */
+
+#define TXSTATUS_PREAMBLE_SENT BIT7
+#define TXSTATUS_IDLE_SENT BIT6
+#define TXSTATUS_ABORT_SENT BIT5
+#define TXSTATUS_EOF BIT4
+#define TXSTATUS_CRC_SENT BIT3
+#define TXSTATUS_ALL_SENT BIT2
+#define TXSTATUS_UNDERRUN BIT1
+#define TXSTATUS_FIFO_EMPTY BIT0
+
+#define DICR_MASTER BIT15
+#define DICR_TRANSMIT BIT0
+#define DICR_RECEIVE BIT1
+
+#define usc_EnableDmaInterrupts(a,b) \
+ usc_OutDmaReg( (a), DICR, (u16)(usc_InDmaReg((a),DICR) | (b)) )
+
+#define usc_DisableDmaInterrupts(a,b) \
+ usc_OutDmaReg( (a), DICR, (u16)(usc_InDmaReg((a),DICR) & ~(b)) )
+
+#define usc_EnableStatusIrqs(a,b) \
+ usc_OutReg( (a), SICR, (u16)(usc_InReg((a),SICR) | (b)) )
+
+#define usc_DisablestatusIrqs(a,b) \
+ usc_OutReg( (a), SICR, (u16)(usc_InReg((a),SICR) & ~(b)) )
+
+/* Transmit status Bits in Transmit Control status Register (TCSR) */
+/* and Transmit Interrupt Control Register (TICR) (except BIT2, BIT0) */
+
+
+#define DISABLE_UNCONDITIONAL 0
+#define DISABLE_END_OF_FRAME 1
+#define ENABLE_UNCONDITIONAL 2
+#define ENABLE_AUTO_CTS 3
+#define ENABLE_AUTO_DCD 3
+#define usc_EnableTransmitter(a,b) \
+ usc_OutReg( (a), TMR, (u16)((usc_InReg((a),TMR) & 0xfffc) | (b)) )
+#define usc_EnableReceiver(a,b) \
+ usc_OutReg( (a), RMR, (u16)((usc_InReg((a),RMR) & 0xfffc) | (b)) )
+
+u16 usc_InDmaReg( struct mgsl_struct *info, u16 Port );
+void usc_OutDmaReg( struct mgsl_struct *info, u16 Port, u16 Value );


+void usc_DmaCmd( struct mgsl_struct *info, u16 Cmd );
+

+u16 usc_InReg( struct mgsl_struct *info, u16 Port );
+void usc_OutReg( struct mgsl_struct *info, u16 Port, u16 Value );
+void usc_RTCmd( struct mgsl_struct *info, u16 Cmd );
+void usc_RCmd( struct mgsl_struct *info, u16 Cmd );
+void usc_TCmd( struct mgsl_struct *info, u16 Cmd );
+
+#define usc_TCmd(a,b) usc_OutReg((a), TCSR, (u16)((a)->usc_idle_mode + (b)))
+#define usc_RCmd(a,b) usc_OutReg((a), RCSR, (b))
+
+void usc_start_receiver( struct mgsl_struct *info );
+void usc_stop_receiver( struct mgsl_struct *info );
+
+void usc_start_transmitter( struct mgsl_struct *info );
+void usc_stop_transmitter( struct mgsl_struct *info );
+void usc_set_txidle( struct mgsl_struct *info );
+void usc_load_txfifo( struct mgsl_struct *info );
+
+void usc_enable_aux_clock( struct mgsl_struct *info, u32 DataRate );
+void usc_enable_loopback( struct mgsl_struct *info, int enable );
+
+void usc_get_serial_signals( struct mgsl_struct *info );
+void usc_set_serial_signals( struct mgsl_struct *info );
+
+void usc_reset( struct mgsl_struct *info );
+
+void usc_set_sync_mode( struct mgsl_struct *info );
+void usc_set_sdlc_mode( struct mgsl_struct *info );
+void usc_set_async_mode( struct mgsl_struct *info );
+void usc_enable_async_clock( struct mgsl_struct *info, u32 DataRate );
+
+void usc_loopback_frame( struct mgsl_struct *info );
+


+void mgsl_tx_timeout(unsigned long context);
+

+/*
+ * Defines a BUS descriptor value for the PCI adapter
+ * local bus address ranges.
+ */
+
+#define BUS_DESCRIPTOR( WrHold, WrDly, RdDly, Nwdd, Nwad, Nxda, Nrdd, Nrad ) \
+(0x00400020 + \
+((WrHold) << 30) + \
+((WrDly) << 28) + \
+((RdDly) << 26) + \
+((Nwdd) << 20) + \
+((Nwad) << 15) + \
+((Nxda) << 13) + \
+((Nrdd) << 11) + \
+((Nrad) << 6) )


+
+void mgsl_trace_block(struct mgsl_struct *info,const char* data, int count, int xmit);
+

+/*
+ * Adapter diagnostic routines
+ */
+BOOLEAN mgsl_register_test( struct mgsl_struct *info );
+BOOLEAN mgsl_irq_test( struct mgsl_struct *info );
+BOOLEAN mgsl_dma_test( struct mgsl_struct *info );
+BOOLEAN mgsl_memory_test( struct mgsl_struct *info );


+int mgsl_adapter_test( struct mgsl_struct *info );
+

+/*
+ * device and resource management routines
+ */
+int mgsl_claim_resources(struct mgsl_struct *info);
+void mgsl_release_resources(struct mgsl_struct *info);
+void mgsl_add_device(struct mgsl_struct *info);
+struct mgsl_struct* mgsl_allocate_device(void);
+int mgsl_enumerate_devices(void);
+
+/*
+ * DMA buffer manupulation functions.
+ */
+void mgsl_free_rx_frame_buffers( struct mgsl_struct *info, unsigned int StartIndex, unsigned int EndIndex );
+int mgsl_get_rx_frame( struct mgsl_struct *info );
+void mgsl_reset_rx_dma_buffers( struct mgsl_struct *info );
+void mgsl_load_tx_dma_buffer( struct mgsl_struct *info, const char *Buffer, unsigned int BufferSize);
+void mgsl_load_pci_memory(char* TargetPtr, const char* SourcePtr, unsigned short count);
+
+/*
+ * DMA and Shared Memory buffer allocation and formatting
+ */
+int mgsl_allocate_dma_buffers(struct mgsl_struct *info);
+void mgsl_free_dma_buffers(struct mgsl_struct *info);
+int mgsl_alloc_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *BufferList,int Buffercount);
+void mgsl_free_frame_memory(struct mgsl_struct *info, DMABUFFERENTRY *BufferList,int Buffercount);
+int mgsl_alloc_buffer_list_memory(struct mgsl_struct *info);
+void mgsl_free_buffer_list_memory(struct mgsl_struct *info);
+
+/*
+ * Bottom half interrupt handlers
+ */
+void mgsl_bh_handler(void* Context);
+void mgsl_bh_receive_dma( struct mgsl_struct *info, unsigned short status );
+void mgsl_bh_transmit_data( struct mgsl_struct *info, unsigned short Datacount );
+void mgsl_bh_status_handler( struct mgsl_struct *info, unsigned short status );
+
+void mgsl_format_bh_queue( struct mgsl_struct *info );
+void mgsl_bh_queue_put( struct mgsl_struct *info, unsigned char type, unsigned short status );
+int mgsl_bh_queue_get( struct mgsl_struct *info );
+
+
+/*
+ * Interrupt handler routines and dispatch table.
+ */
+void mgsl_isr_null( struct mgsl_struct *info );
+void mgsl_isr_transmit_data( struct mgsl_struct *info );
+void mgsl_isr_receive_data( struct mgsl_struct *info );
+void mgsl_isr_receive_status( struct mgsl_struct *info );
+void mgsl_isr_transmit_status( struct mgsl_struct *info );
+void mgsl_isr_io_pin( struct mgsl_struct *info );
+void mgsl_isr_misc( struct mgsl_struct *info );
+void mgsl_isr_receive_dma( struct mgsl_struct *info );
+
+typedef void (*isr_dispatch_func)(struct mgsl_struct *);
+
+isr_dispatch_func UscIsrTable[7] =
+{
+ mgsl_isr_null,
+ mgsl_isr_misc,
+ mgsl_isr_io_pin,
+ mgsl_isr_transmit_data,
+ mgsl_isr_transmit_status,
+ mgsl_isr_receive_data,
+ mgsl_isr_receive_status
+};
+
+/*
+ * ioctl call handlers


+ */
+static int set_modem_info(struct mgsl_struct * info, unsigned int cmd,

+ unsigned int *value);
+static int get_modem_info(struct mgsl_struct * info, unsigned int *value);


+static int mgsl_get_stats(struct mgsl_struct * info, struct mgsl_icount

+ *user_icount);
+static int mgsl_get_params(struct mgsl_struct * info, MGSL_PARAMS *user_params);
+static int mgsl_set_params(struct mgsl_struct * info, MGSL_PARAMS *new_params);
+static int mgsl_get_txidle(struct mgsl_struct * info, int*idle_mode);
+static int mgsl_set_txidle(struct mgsl_struct * info, int idle_mode);
+static int mgsl_txenable(struct mgsl_struct * info, int enable);
+static int mgsl_txabort(struct mgsl_struct * info);
+static int mgsl_rxenable(struct mgsl_struct * info, int enable);


+static int mgsl_wait_event(struct mgsl_struct * info, int mask);
+

+#define jiffies_from_ms(a) ((((a) * HZ)/1000)+1)
+
+/*
+ * Global linked list of SyncLink devices
+ */
+struct mgsl_struct *mgsl_device_list = NULL;
+int mgsl_device_count = 0;
+
+/*
+ * Set this param to non-zero to load eax with the
+ * .text section address and breakpoint on module load.
+ * This is useful for use with gdb and add-symbol-file command.
+ */
+int break_on_load=0;
+
+/*
+ * Driver major number, defaults to zero to get auto
+ * assigned major number. May be forced as module parameter.
+ */
+int ttymajor=0;
+
+int cuamajor=0;
+
+/*
+ * Array of user specified options for ISA adapters.
+ */
+static int io[MAX_ISA_DEVICES] = {0,};
+static int irq[MAX_ISA_DEVICES] = {0,};
+static int dma[MAX_ISA_DEVICES] = {0,};
+static int debug_level = 0;
+


+
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)

+MODULE_PARM(break_on_load,"i");
+MODULE_PARM(ttymajor,"i");
+MODULE_PARM(cuamajor,"i");
+MODULE_PARM(io,"1-" __MODULE_STRING(MAX_ISA_DEVICES) "i");
+MODULE_PARM(irq,"1-" __MODULE_STRING(MAX_ISA_DEVICES) "i");
+MODULE_PARM(dma,"1-" __MODULE_STRING(MAX_ISA_DEVICES) "i");
+MODULE_PARM(debug_level,"i");
+#endif
+
+static char *driver_name = "SyncLink serial driver";
+static char *driver_version = "1.00";
+
+static struct tty_driver serial_driver, callout_driver;
+static int serial_refcount;
+
+/* number of characters left in xmit buffer before we ask for more */
+#define WAKEUP_CHARS 256
+
+
+static void mgsl_change_params(struct mgsl_struct *info);


+static void mgsl_wait_until_sent(struct tty_struct *tty, int timeout);
+

+static struct tty_struct **serial_table = NULL;
+static struct termios **serial_termios = NULL;
+static struct termios **serial_termios_locked = NULL;
+
+#ifndef MIN
+#define MIN(a,b) ((a) < (b) ? (a) : (b))
+#endif
+
+/*
+ * 1st function defined in .text section. Calling this function in
+ * init_module() followed by a breakpoint allows a remote debugger
+ * (gdb) to get the .text address for the add-symbol-file command.
+ * This allows remote debugging of dynamically loadable modules.
+ */
+void* mgsl_get_text_ptr(void);
+void* mgsl_get_text_ptr() {return mgsl_get_text_ptr;}
+
+/*
+ * tmp_buf is used as a temporary buffer by mgsl_write. We need to
+ * lock it in case the COPY_FROM_USER blocks while swapping in a page,
+ * and some other program tries to do a serial write at the same time.
+ * Since the lock will only come under contention when the system is
+ * swapping and available memory is low, it makes sense to share one
+ * buffer across all the serial ioports, since it significantly saves
+ * memory if large numbers of serial ports are open.
+ */
+static unsigned char *tmp_buf;
+static struct semaphore tmp_buf_sem = MUTEX;
+
+static inline int mgsl_paranoia_check(struct mgsl_struct *info,
+ kdev_t device, const char *routine)
+{
+#ifdef MGSL_PARANOIA_CHECK
+ static const char *badmagic =
+ "Warning: bad magic number for mgsl struct (%s) in %s\n";
+ static const char *badinfo =
+ "Warning: null mgsl_struct for (%s) in %s\n";
+
+ if (!info) {
+ printk(badinfo, kdevname(device), routine);
+ return 1;
+ }
+ if (info->magic != MGSL_MAGIC) {
+ printk(badmagic, kdevname(device), routine);
+ return 1;
+ }
+#endif


+ return 0;
+}
+

+/* mgsl_stop() throttle (stop) transmitter


+ *
+ * Arguments: tty pointer to tty info structure

+ * Return Value: None
+ */

+static void mgsl_stop(struct tty_struct *tty)
+{


+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;

+ unsigned long flags;
+

+ if (mgsl_paranoia_check(info, tty->device, "mgsl_stop"))
+ return;
+

+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk("mgsl_stop(%s)\n",info->device_name);
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ if (info->tx_enabled)
+ usc_stop_transmitter(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+} /* end of mgsl_stop() */
+
+/* mgsl_start() release (start) transmitter


+ *
+ * Arguments: tty pointer to tty info structure

+ * Return Value: None
+ */

+static void mgsl_start(struct tty_struct *tty)
+{


+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;

+ unsigned long flags;
+

+ if (mgsl_paranoia_check(info, tty->device, "mgsl_start"))
+ return;
+

+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk("mgsl_start(%s)\n",info->device_name);
+

+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ if (!info->tx_enabled)
+ usc_start_transmitter(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);

+
+} /* end of mgsl_start() */
+
+/*
+ * Bottom half work queue access functions
+ */
+
+/* mgsl_format_bh_queue()
+ *
+ * Initialize the bottom half processing queue
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_format_bh_queue( struct mgsl_struct *info )
+{
+ BH_QUEUE bh_queue = info->bh_queue;
+ int i;
+
+ /* go through sequentially tacking the little bits together */
+
+ for ( i=0; i < MAX_BH_QUEUE_ENTRIES; i++ ) {
+ if ( info->free_bh_queue_tail == NULL )
+ info->free_bh_queue_head = bh_queue;
+ else
+ info->free_bh_queue_tail->link = bh_queue;
+ info->free_bh_queue_tail = bh_queue++;
+ }
+
+ /* As a safety measure, mark the end of the chain with a NULL */
+ info->free_bh_queue_tail->link = NULL;
+
+} /* end of mgsl_format_bh_queue() */
+
+/* mgsl_bh_queue_put()
+ *
+ * Add a BH event to the BH queue
+ *
+ * Arguments: info pointer to device instance data
+ * type BH event type
+ * status BH event status


+ *
+ * Return Value: None
+ */

+void mgsl_bh_queue_put( struct mgsl_struct *info, unsigned char type, unsigned short status )
+{
+ BH_EVENT *event = info->free_bh_queue_head;
+
+ if ( event != NULL ) {
+ /* remove free element from head of free list */
+ info->free_bh_queue_head = event->link;
+ event->link = NULL;
+
+ /* file out new BH event */
+ event->type = type;
+ event->status = status;
+
+ /* add element to tail of pending list */
+ if ( info->bh_queue_head != NULL ){
+ /* BH queue is not empty, add current element to tail */
+ info->bh_queue_tail->link = event;
+ } else {
+ /* the BH queue is empty so this element becomes the head of queue */
+ info->bh_queue_head = event;
+ }
+
+ /* the new element becomes tail of queue */
+ info->bh_queue_tail = event;
+ } else {
+ /* No more free BH action elements in queue. */
+ /* This happens when too many interrupts are occuring */
+ /* for the mgsl_bh_handler to process so set a flag. */
+
+ info->isr_overflow = 1;
+ }
+
+} /* end of mgsl_bh_queue_put() */
+
+/* mgsl_bh_queue_get()
+ *
+ * Free the current work item (if any) and get the
+ * next work item from the head of the pending work item queue.
+ *
+ * Effects:
+ *
+ * If a BH action element is available on the BH action queue
+ * then the head of the queue is removed and bh_action
+ * is set to point to the removed element.
+ *
+ * Arguments: info pointer to device instance data
+ * Return Value: 1 if BH action removed from queue
+ */
+int mgsl_bh_queue_get( struct mgsl_struct *info )


+{
+ unsigned long flags;
+

+ spin_lock_irqsave(&info->irq_spinlock,flags);
+
+ if ( info->bh_action ) {
+ /* free the current work item */
+ if ( info->free_bh_queue_head != NULL ){
+ /* free queue is not empty, add current element to tail */
+ info->free_bh_queue_tail->link = info->bh_action;
+ } else {
+ /* free queue is empty so this element becomes the head of queue */
+ info->free_bh_queue_head = info->bh_action;
+ }
+
+ /* add element to tail of free queue */
+ info->free_bh_queue_tail = info->bh_action;
+ info->free_bh_queue_tail->link = NULL;
+ }
+
+ /* attempt to remove element from head of queue */
+ info->bh_action = info->bh_queue_head;
+
+ if ( info->bh_action != NULL ){
+ /* BH queue is not empty, remove element from queue head */
+ info->bh_queue_head = info->bh_action->link;
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ return 1;
+ }
+
+ /* Mark BH routine as complete */
+ info->bh_running = 0;
+ info->bh_requested = 0;
+
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);


+
+ return 0;
+

+} /* end of mgsl_bh_queue_get() */
+
+/* mgsl_bh_handler()
+ *
+ * Perform bottom half processing of work items queued by ISR.
+ *
+ * Arguments: Context pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_bh_handler(void* Context)
+{
+ struct mgsl_struct *info = (struct mgsl_struct*)Context;
+
+ if (!info)
+ return;
+

+ if ( debug_level >= DEBUG_LEVEL_BH )

+ printk( "%s(%d):mgsl_bh_handler(%s) entry\n",
+ __FILE__,__LINE__,info->device_name);
+
+ info->bh_running = 1;
+
+ /* Attempt to clear out the BH queue */
+
+ while( mgsl_bh_queue_get(info) ) {
+
+ /* Process work item */


+ if ( debug_level >= DEBUG_LEVEL_BH )

+ printk( "%s(%d):mgsl_bh_handler() work item action=%d\n",
+ __FILE__,__LINE__,info->bh_action->type);
+
+ switch ( info->bh_action->type ) {
+
+ case BH_TYPE_RECEIVE_DMA:
+ mgsl_bh_receive_dma( info, info->bh_action->status );
+ break;
+
+ case BH_TYPE_TRANSMIT_STATUS:
+ case BH_TYPE_TRANSMIT_DATA:
+ mgsl_bh_transmit_data( info, info->bh_action->status );
+ break;
+
+ case BH_TYPE_STATUS:
+ mgsl_bh_status_handler( info, info->bh_action->status );


+ break;
+
+ default:

+ /* unknown work item ID */
+ printk("Unknown work item ID=%08X!\n",
+ info->bh_action->type );


+ break;
+ }
+ }
+

+ if ( info->isr_overflow ) {
+ printk("ISR overflow detected.\n");
+ }
+


+ if ( debug_level >= DEBUG_LEVEL_BH )

+ printk( "%s(%d):mgsl_bh_handler(%s) exit\n",
+ __FILE__,__LINE__,info->device_name);
+
+} /* end of mgsl_bh_handler() */
+
+/* mgsl_bh_receive_dma()
+ *
+ * Perform bottom half processing for a receive DMA interrupt
+ * This occurs in HDLC mode after a DMA buffer has terminated
+ * or the DMA buffers have been exhausted.


+ *
+ * Arguments:
+ *

+ * info pointer to device instance data
+ * status status word


+ *
+ * Return Value: None
+ */

+void mgsl_bh_receive_dma( struct mgsl_struct *info, unsigned short status )
+{


+ if ( debug_level >= DEBUG_LEVEL_BH )

+ printk( "%s(%d):mgsl_bh_receive_dma(%s)\n",
+ __FILE__,__LINE__,info->device_name);
+
+ while( mgsl_get_rx_frame(info) );
+
+} /* end of mgsl_bh_receive_dma() */
+
+/* mgsl_bh_transmit_data()
+ *
+ * Process a transmit data interrupt event
+ * This occurs in asynchronous communications mode.
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_bh_transmit_data( struct mgsl_struct *info, unsigned short Datacount )
+{
+ struct tty_struct *tty = info->tty;
+

+ if ( debug_level >= DEBUG_LEVEL_BH )

+ printk( "%s(%d):mgsl_bh_transmit_data() entry on %s\n",
+ __FILE__,__LINE__,info->device_name);
+
+ /* wakeup any waiting write requests */
+ if (tty) {
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+ tty->ldisc.write_wakeup) {


+ if ( debug_level >= DEBUG_LEVEL_BH )

+ printk( "%s(%d):calling ldisc.write_wakeup on %s\n",
+ __FILE__,__LINE__,info->device_name);
+ (tty->ldisc.write_wakeup)(tty);
+ }
+ wake_up_interruptible(&tty->write_wait);
+ }
+
+} /* End Of mgsl_bh_transmit_data() */
+
+/* mgsl_bh_status_handler()
+ *
+ * Peform bottom half processing for a status interrupt
+ *
+ * This event is generated when a I/O pin (serial signal)
+ * has a transition. If there is a pending WaitEvent call
+ * and the status transition is identified in the EventMast
+ * of the pending call then complete the pending call.


+ *
+ * Arguments:
+ *

+ * info pointer to device instance data
+ * status status word


+ *
+ * Return Value: None
+ */

+void mgsl_bh_status_handler( struct mgsl_struct *info, unsigned short status )
+{


+ if ( debug_level >= DEBUG_LEVEL_BH )

+ printk( "%s(%d):mgsl_bh_status_handler() entry on %s\n",
+ __FILE__,__LINE__,info->device_name);
+
+} /* End Of mgsl_bh_status_handler() */
+
+/* mgsl_isr_receive_status()
+ *
+ * Service a receive status interrupt. The type of status
+ * interrupt is indicated by the state of the RCSR.
+ * This is only used for HDLC mode.
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_isr_receive_status( struct mgsl_struct *info )
+{
+ u16 status = usc_InReg( info, RCSR );
+
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):mgsl_isr_receive_status status=%04X\n",
+ __FILE__,__LINE__,status);
+
+ usc_ClearIrqPendingBits( info, RECEIVE_STATUS );
+ usc_UnlatchRxstatusBits( info, status );
+
+ if (status & (RXSTATUS_EXITED_HUNT + RXSTATUS_IDLE_RECEIVED)) {
+ if (status & RXSTATUS_EXITED_HUNT)
+ info->icount.exithunt++;
+ if (status & RXSTATUS_IDLE_RECEIVED)
+ info->icount.rxidle++;
+ wake_up_interruptible(&info->event_wait_q);
+ }
+
+ if (status & RXSTATUS_OVERRUN){
+ /* Purge receive FIFO to allow DMA buffer completion
+ * with overrun status stored in the receive status block.
+ */


+ usc_RCmd( info, RCmd_EnterHuntmode );

+ usc_RTCmd( info, RTCmd_PurgeRxFifo );
+ }

+
+} /* end of mgsl_isr_receive_status() */
+
+/* mgsl_isr_transmit_status()
+ *
+ * Service a transmit status interrupt
+ * HDLC mode :end of transmit frame
+ * Async mode:all data is sent
+ * transmit status is indicated by bits in the TCSR.
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_isr_transmit_status( struct mgsl_struct *info )
+{
+ u16 status = usc_InReg( info, TCSR );
+
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):mgsl_isr_transmit_status status=%04X\n",
+ __FILE__,__LINE__,status);
+
+ usc_ClearIrqPendingBits( info, TRANSMIT_STATUS );
+ usc_UnlatchTxstatusBits( info, status );
+
+ if ( status & TXSTATUS_EOF_SENT )
+ info->icount.txok++;
+ else if ( status & TXSTATUS_UNDERRUN )
+ info->icount.txunder++;
+ else if ( status & TXSTATUS_ABORT_SENT )
+ info->icount.txabort++;
+ else
+ info->icount.txunder++;
+

+ info->tx_active = 0;
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;

+ del_timer(&info->tx_timer);
+
+ if ( info->drop_rts_on_tx_done ) {
+ usc_get_serial_signals( info );
+ if ( info->serial_signals & SerialSignal_RTS ) {


+ info->serial_signals &= ~SerialSignal_RTS;

+ usc_set_serial_signals( info );
+ }

+ info->drop_rts_on_tx_done = 0;
+ }
+
+ if (info->tty->stopped || info->tty->hw_stopped) {
+ usc_stop_transmitter(info);
+ return;
+ }
+
+ mgsl_bh_queue_put(info, BH_TYPE_TRANSMIT_STATUS, status);
+
+} /* end of mgsl_isr_transmit_status() */
+
+/* mgsl_isr_io_pin()
+ *
+ * Service an Input/Output pin interrupt. The type of
+ * interrupt is indicated by bits in the MISR
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_isr_io_pin( struct mgsl_struct *info )
+{
+ struct mgsl_icount *icount;
+ u16 status = usc_InReg( info, MISR );
+
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):mgsl_isr_io_pin status=%04X\n",
+ __FILE__,__LINE__,status);
+
+ usc_ClearIrqPendingBits( info, IO_PIN );
+ usc_UnlatchIostatusBits( info, status );
+
+ if (status & (MISCSTATUS_CTS_LATCHED | MISCSTATUS_DCD_LATCHED |
+ MISCSTATUS_DSR_LATCHED | MISCSTATUS_RI_LATCHED) ) {
+ icount = &info->icount;
+ /* update input line counters */
+ if (status & MISCSTATUS_RI_LATCHED)
+ icount->rng++;
+ if (status & MISCSTATUS_DSR_LATCHED)
+ icount->dsr++;
+ if (status & MISCSTATUS_DCD_LATCHED) {
+ icount->dcd++;
+#ifdef CONFIG_HARD_PPS
+ if ((info->flags & ASYNC_HARDPPS_CD) &&
+ (status & MISCSTATUS_DCD_LATCHED))
+ hardpps();
+#endif
+ }
+ if (status & MISCSTATUS_CTS_LATCHED)
+ icount->cts++;
+ wake_up_interruptible(&info->status_event_wait_q);
+ wake_up_interruptible(&info->event_wait_q);
+
+ if ( (info->flags & ASYNC_CHECK_CD) &&
+ (status & MISCSTATUS_DCD_LATCHED) ) {
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s CD now %s...", info->device_name,
+ (status & MISCSTATUS_DCD) ? "on" : "off");
+ if (status & MISCSTATUS_DCD)
+ wake_up_interruptible(&info->open_wait);
+ else if (!((info->flags & ASYNC_CALLOUT_ACTIVE) &&
+ (info->flags & ASYNC_CALLOUT_NOHUP))) {
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("doing serial hangup...");
+ if (info->tty)
+ tty_hangup(info->tty);
+ }
+ }
+
+ if ( (info->flags & ASYNC_CTS_FLOW) &&
+ (status & MISCSTATUS_CTS_LATCHED) ) {
+ if (info->tty->hw_stopped) {
+ if (status & MISCSTATUS_CTS) {
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("CTS tx start...");
+ info->tty->hw_stopped = 0;
+ usc_start_transmitter(info);
+ mgsl_bh_queue_put( info, BH_TYPE_TRANSMIT_DATA, status );
+ return;
+ }
+ } else {
+ if (!(status & MISCSTATUS_CTS)) {
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("CTS tx stop...");
+ info->tty->hw_stopped = 1;
+ usc_stop_transmitter(info);


+ }
+ }
+ }
+ }
+

+ /* for diagnostics set IRQ flag */
+ if ( status & MISCSTATUS_TXC_LATCHED ){
+ usc_OutReg( info, SICR,
+ (unsigned short)(usc_InReg(info,SICR) & ~(SICR_TXC_ACTIVE+SICR_TXC_INACTIVE)) );
+ usc_UnlatchIostatusBits( info, MISCSTATUS_TXC_LATCHED );
+ info->irq_occurred = 1;
+ }
+
+} /* end of mgsl_isr_io_pin() */
+
+/* mgsl_isr_transmit_data()
+ *
+ * Service a transmit data interrupt (async mode only).
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_isr_transmit_data( struct mgsl_struct *info )
+{
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):mgsl_isr_transmit_data xmit_cnt=%d\n",
+ __FILE__,__LINE__,info->xmit_cnt);
+
+ usc_ClearIrqPendingBits( info, TRANSMIT_DATA );
+
+ if (info->tty->stopped || info->tty->hw_stopped) {
+ usc_stop_transmitter(info);
+ return;
+ }
+

+ if ( info->xmit_cnt )

+ usc_load_txfifo( info );
+ else
+ info->tx_active = 0;
+
+ if (info->xmit_cnt < WAKEUP_CHARS)
+ mgsl_bh_queue_put(info, BH_TYPE_TRANSMIT_DATA, (unsigned short)(info->xmit_cnt));
+
+} /* end of mgsl_isr_transmit_data() */
+
+/* mgsl_isr_receive_data()
+ *
+ * Service a receive data interrupt. This occurs
+ * when operating in asynchronous interrupt transfer mode.
+ * The receive data FIFO is flushed to the receive data buffers.
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_isr_receive_data( struct mgsl_struct *info )
+{
+ int Fifocount;
+ u16 status;
+ unsigned char DataByte;
+ struct tty_struct *tty = info->tty;
+ struct mgsl_icount *icount = &info->icount;
+
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):mgsl_isr_receive_data\n",
+ __FILE__,__LINE__);
+
+ usc_ClearIrqPendingBits( info, RECEIVE_DATA );
+
+ /* select FIFO status for RICR readback */
+ usc_RCmd( info, RCmd_SelectRicrRxFifostatus );
+
+ /* clear the Wordstatus bit so that status readback */
+ /* only reflects the status of this byte */
+ usc_OutReg( info, RICR+LSBONLY, (u16)(usc_InReg(info, RICR+LSBONLY) & ~BIT3 ));
+
+ /* flush the receive FIFO */
+
+ while( (Fifocount = (usc_InReg(info,RICR) >> 8)) ) {
+ /* read one byte from RxFIFO */
+ outw( (inw(info->io_base + CCAR) & 0x0780) | (RDR+LSBONLY),


+ info->io_base + CCAR );

+ DataByte = inb( info->io_base + CCAR );
+
+ /* get the status of the received byte */
+ status = usc_InReg(info, RCSR);
+ if ( status & (RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR +
+ RXSTATUS_OVERRUN + RXSTATUS_BREAK_RECEIVED) )
+ usc_UnlatchRxstatusBits(info,RXSTATUS_ALL);
+
+ if (tty->flip.count >= TTY_FLIPBUF_SIZE)
+ continue;
+
+ *tty->flip.char_buf_ptr = DataByte;
+ icount->rx++;
+
+ *tty->flip.flag_buf_ptr = 0;
+ if ( status & (RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR +
+ RXSTATUS_OVERRUN + RXSTATUS_BREAK_RECEIVED) ) {
+ printk("rxerr=%04X\n",status);
+ /* update error statistics */
+ if ( status & RXSTATUS_BREAK_RECEIVED ) {
+ status &= ~(RXSTATUS_FRAMING_ERROR + RXSTATUS_PARITY_ERROR);
+ icount->brk++;
+ } else if (status & RXSTATUS_PARITY_ERROR)
+ icount->parity++;
+ else if (status & RXSTATUS_FRAMING_ERROR)
+ icount->frame++;
+ else if (status & RXSTATUS_OVERRUN) {
+ /* must issue purge fifo cmd before */
+ /* 16C32 accepts more receive chars */
+ usc_RTCmd(info,RTCmd_PurgeRxFifo);
+ icount->overrun++;
+ }
+
+ /* discard char if tty control flags say so */
+ if (status & info->ignore_status_mask)
+ continue;
+
+ status &= info->read_status_mask;
+
+ if (status & RXSTATUS_BREAK_RECEIVED) {
+ *tty->flip.flag_buf_ptr = TTY_BREAK;
+ if (info->flags & ASYNC_SAK)
+ do_SAK(tty);
+ } else if (status & RXSTATUS_PARITY_ERROR)
+ *tty->flip.flag_buf_ptr = TTY_PARITY;
+ else if (status & RXSTATUS_FRAMING_ERROR)
+ *tty->flip.flag_buf_ptr = TTY_FRAME;
+ if (status & RXSTATUS_OVERRUN) {
+ /* Overrun is special, since it's
+ * reported immediately, and doesn't
+ * affect the current character
+ */
+ if (tty->flip.count < TTY_FLIPBUF_SIZE) {
+ tty->flip.count++;
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ *tty->flip.flag_buf_ptr = TTY_OVERRUN;
+ }
+ }
+ } /* end of if (error) */
+
+ tty->flip.flag_buf_ptr++;
+ tty->flip.char_buf_ptr++;
+ tty->flip.count++;
+ }
+
+ if ( debug_level >= DEBUG_LEVEL_ISR ) {
+ printk("%s(%d):mgsl_isr_receive_data flip count=%d\n",
+ __FILE__,__LINE__,tty->flip.count);
+ printk("%s(%d):rx=%d brk=%d parity=%d frame=%d overrun=%d\n",
+ __FILE__,__LINE__,icount->rx,icount->brk,
+ icount->parity,icount->frame,icount->overrun);
+ }
+
+ if ( tty->flip.count ) {
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ tty_flip_buffer_push(tty);
+#else
+ queue_task(&tty->flip.tqueue, &tq_timer);
+#endif
+ }
+
+
+} /* end of mgsl_isr_receive_data() */
+
+/* mgsl_isr_misc()
+ *
+ * Service a miscellaneos interrupt source.
+ *
+ * Arguments: info pointer to device extension (instance data)


+ * Return Value: None
+ */

+void mgsl_isr_misc( struct mgsl_struct *info )
+{
+ u16 status = usc_InReg( info, MISR );
+
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):mgsl_isr_misc status=%04X\n",
+ __FILE__,__LINE__,status);
+
+ usc_ClearIrqPendingBits( info, MISC );
+ usc_UnlatchMiscstatusBits( info, status );
+
+} /* end of mgsl_isr_misc() */
+
+/* mgsl_isr_null()
+ *
+ * Services undefined interrupt vectors from the
+ * USC. (hence this function SHOULD never be called)
+ *
+ * Arguments: info pointer to device extension (instance data)


+ * Return Value: None
+ */

+void mgsl_isr_null( struct mgsl_struct *info )
+{
+
+} /* end of mgsl_isr_null() */
+
+/* mgsl_isr_receive_dma()
+ *
+ * Service a receive DMA channel interrupt.
+ * For this driver there are two sources of receive DMA interrupts
+ * as identified in the Receive DMA mode Register (RDMR):
+ *
+ * BIT3 EOA/EOL End of List, all receive buffers in receive
+ * buffer list have been filled (no more free buffers
+ * available). The DMA controller has shut down.
+ *
+ * BIT2 EOB End of Buffer. This interrupt occurs when a receive
+ * DMA buffer is terminated in response to completion
+ * of a good frame or a frame with errors. The status
+ * of the frame is stored in the buffer entry in the
+ * list of receive buffer entries.
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+void mgsl_isr_receive_dma( struct mgsl_struct *info )
+{
+ u16 status;
+
+ /* clear interrupt pending and IUS bit for Rx DMA IRQ */
+ usc_OutDmaReg( info, CDIR, BIT9+BIT1 );
+
+ /* Read the receive DMA status to identify interrupt type. */
+ /* This also clears the status bits. */


+ status = usc_InDmaReg( info, RDMR );
+

+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):mgsl_isr_receive_dma(%s) status=%04X\n",
+ __FILE__,__LINE__,info->device_name,status);
+
+ /* Post a receive event for BH processing. */
+ mgsl_bh_queue_put( info, BH_TYPE_RECEIVE_DMA, status );
+
+ if ( status & BIT3 )
+ info->rx_overflow = 1;
+
+} /* end of mgsl_isr_receive_dma() */
+
+/* mgsl_interrupt()
+ *
+ * Interrupt service routine entry point.


+ *
+ * Arguments:
+ *

+ * irq interrupt number that caused interrupt
+ * dev_id device ID supplied during interrupt registration
+ * regs interrupted processor context


+ *
+ * Return Value: None
+ */

+static void mgsl_interrupt(int irq, void *dev_id, struct pt_regs * regs)
+{
+ struct mgsl_struct * info;
+ u16 UscVector;
+ u16 DmaVector;
+
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):mgsl_interrupt(%d)entry.\n",
+ __FILE__,__LINE__,irq);
+
+ info = (struct mgsl_struct *)dev_id;
+ if (!info)
+ return;
+
+ spin_lock(&info->irq_spinlock);
+
+ for(;;) {
+ /* Read the interrupt vectors from hardware. */
+ UscVector = usc_InReg(info, IVR) >> 9;
+ DmaVector = usc_InDmaReg(info, DIVR);
+
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):%s UscVector=%08X DmaVector=%08X\n",
+ __FILE__,__LINE__,info->device_name,UscVector,DmaVector);
+
+ if ( !UscVector && !DmaVector )
+ break;
+
+ /* Dispatch interrupt vector */
+ if ( UscVector )
+ (*UscIsrTable[UscVector])(info);
+ else
+ mgsl_isr_receive_dma(info);
+
+ if ( info->isr_overflow ) {
+ printk(KERN_ERR"%s(%d):%s isr overflow irq=%d\n",
+ __FILE__,__LINE__,info->device_name, irq);
+ /* Interrupt overflow. Reset adapter and exit. */
+// UscReset(info);
+// break;
+ }
+ }
+
+ /* Request bottom half processing if there's something
+ * for it to do and the bh is not already running
+ */
+
+ if ( info->bh_queue_head && !info->bh_running && !info->bh_requested ) {
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):%s queueing bh task.\n",
+ __FILE__,__LINE__,info->device_name);
+ queue_task(&info->task, &tq_immediate);
+ mark_bh(IMMEDIATE_BH);
+ info->bh_requested = 1;
+ }
+
+ spin_unlock(&info->irq_spinlock);
+
+ if ( debug_level >= DEBUG_LEVEL_ISR )
+ printk("%s(%d):mgsl_interrupt(%d)exit.\n",
+ __FILE__,__LINE__,irq);
+
+} /* end of mgsl_interrupt() */
+
+/* startup()
+ *
+ * Initialize and start device.
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: 0 if success, otherwise error code
+ */

+static int startup(struct mgsl_struct * info)
+{
+ int retval = 0;
+

+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk("%s(%d):mgsl_startup(%s)\n",__FILE__,__LINE__,info->device_name);


+
+ if (info->flags & ASYNC_INITIALIZED)

+ return 0;
+
+ if (!info->xmit_buf) {
+ /* allocate a page of memory for a transmit buffer */
+ info->xmit_buf = (unsigned char *)get_free_page(GFP_KERNEL);
+ if (!info->xmit_buf) {
+ printk(KERN_ERR"%s(%d):%s can't allocate transmit buffer\n",
+ __FILE__,__LINE__,info->device_name);


+ return -ENOMEM;
+ }
+ }
+

+ mgsl_format_bh_queue(info);
+
+ init_timer(&info->tx_timer);
+ info->tx_timer.data = (unsigned long)info;
+ info->tx_timer.function = mgsl_tx_timeout;
+
+ /* Allocate and claim adapter resources */
+ retval = mgsl_claim_resources(info);
+
+ /* perform existance check and diagnostics */
+ if ( !retval )
+ retval = mgsl_adapter_test(info);
+
+ if ( retval ) {
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ if (capable(CAP_SYS_ADMIN) && info->tty)
+#else
+ if (suser() && info->tty)
+#endif
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+ mgsl_release_resources(info);


+ return retval;
+ }
+

+ /* program hardware for current parameters */
+ mgsl_change_params(info);
+
+ if (info->tty)
+ clear_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->flags |= ASYNC_INITIALIZED;


+
+ return 0;
+

+} /* end of startup() */
+
+/* shutdown()
+ *
+ * Called by mgsl_close() and mgsl_hangup() to shutdown hardware
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+static void shutdown(struct mgsl_struct * info)


+{
+ unsigned long flags;
+

+ if (!(info->flags & ASYNC_INITIALIZED))

+ return;
+


+ if (debug_level >= DEBUG_LEVEL_INFO)

+ printk("%s(%d):mgsl_shutdown(%s)\n",


+ __FILE__,__LINE__, info->device_name );
+

+ /* clear status wait queue because status changes */
+ /* can't happen after shutting down the hardware */
+ wake_up_interruptible(&info->status_event_wait_q);
+ wake_up_interruptible(&info->event_wait_q);
+
+ if (info->xmit_buf) {
+ free_page((unsigned long) info->xmit_buf);
+ info->xmit_buf = 0;
+ }
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ usc_DisableMasterIrqBit(info);
+ usc_stop_receiver(info);
+ usc_stop_transmitter(info);
+ usc_DisableInterrupts(info,RECEIVE_DATA + RECEIVE_STATUS +
+ TRANSMIT_DATA + TRANSMIT_STATUS + IO_PIN + MISC );
+ usc_DisableDmaInterrupts(info,DICR_MASTER + DICR_TRANSMIT + DICR_RECEIVE);
+
+ /* Disable DMAEN (Port 7, Bit 14) */
+ /* This disconnects the DMA request signal from the ISA bus */


+ /* on the ISA adapter. This has no effect for the PCI adapter */

+ usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT15) | BIT14));
+
+ /* Disable INTEN (Port 6, Bit12) */
+ /* This disconnects the IRQ request signal to the ISA bus */


+ /* on the ISA adapter. This has no effect for the PCI adapter */

+ usc_OutReg(info, PCR, (u16)((usc_InReg(info, PCR) | BIT13) | BIT12));
+
+ if (!info->tty || info->tty->termios->c_cflag & HUPCL) {
+ info->serial_signals &= ~(SerialSignal_DTR + SerialSignal_RTS);
+ usc_set_serial_signals(info);
+ }


+
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+

+ mgsl_release_resources(info);
+
+ if (info->tty)
+ set_bit(TTY_IO_ERROR, &info->tty->flags);
+
+ info->flags &= ~ASYNC_INITIALIZED;
+
+} /* end of shutdown() */
+
+/* mgsl_change_params()
+ *
+ * Reconfigure adapter based on new parameters
+ *
+ * Arguments: info pointer to device instance data


+ * Return Value: None
+ */

+static void mgsl_change_params(struct mgsl_struct *info)
+{
+ unsigned cflag;
+ unsigned long flags;
+ int bits_per_char;
+
+ if (!info->tty || !info->tty->termios)
+ return;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)

+ printk("%s(%d):mgsl_change_params(%s)\n",


+ __FILE__,__LINE__, info->device_name );
+

+ cflag = info->tty->termios->c_cflag;
+
+ /* if B0 rate (hangup) specified then negate DTR and RTS */
+ /* otherwise assert DTR and RTS */
+ if (cflag & CBAUD)
+ info->serial_signals |= SerialSignal_RTS + SerialSignal_DTR;
+ else
+ info->serial_signals &= ~(SerialSignal_RTS + SerialSignal_DTR);
+
+ /* byte size and parity */
+
+ switch (cflag & CSIZE) {
+ case CS5: info->params.data_bits = 5; break;
+ case CS6: info->params.data_bits = 6; break;
+ case CS7: info->params.data_bits = 7; break;
+ case CS8: info->params.data_bits = 8; break;
+ /* Never happens, but GCC is too dumb to figure it out */
+ default: info->params.data_bits = 7; break;
+ }
+
+ if (cflag & CSTOPB)
+ info->params.stop_bits = 2;
+ else
+ info->params.stop_bits = 1;
+
+ info->params.parity = ASYNC_PARITY_NONE;
+ if (cflag & PARENB) {
+ if (cflag & PARODD)
+ info->params.parity = ASYNC_PARITY_ODD;
+ else
+ info->params.parity = ASYNC_PARITY_EVEN;
+#ifdef CMSPAR
+ if (cflag & CMSPAR)
+ info->params.parity = ASYNC_PARITY_SPACE;
+#endif
+ }
+
+ /* calculate number of jiffies to transmit a full
+ * FIFO (32 bytes) at specified data rate
+ */
+ bits_per_char = info->params.data_bits +
+ info->params.stop_bits + 1;
+
+ /* if port data rate is set to 460800 or less then
+ * allow tty settings to override, otherwise keep the
+ * current data rate.
+ */
+ if (info->params.data_rate <= 460800) {
+#if LINUX_VERSION_CODE >= VERSION(2,1,0)
+ info->params.data_rate = tty_get_baud_rate(info->tty);
+#else
+ int i = cflag & CBAUD;
+ if (i & CBAUDEX) {
+ i &= ~CBAUDEX;
+ if (i < 1 || i > 4)
+ info->tty->termios->c_cflag &= ~CBAUDEX;
+ else
+ i += 15;
+ }
+ info->params.data_rate = baud_table[i];
+#endif
+ }
+
+ if ( info->params.data_rate ) {
+ info->timeout = (32*HZ*bits_per_char) /
+ info->params.data_rate;
+ }
+ info->timeout += HZ/50; /* Add .02 seconds of slop */
+
+ if (cflag & CRTSCTS)
+ info->flags |= ASYNC_CTS_FLOW;
+ else
+ info->flags &= ~ASYNC_CTS_FLOW;
+
+ if (cflag & CLOCAL)
+ info->flags &= ~ASYNC_CHECK_CD;
+ else
+ info->flags |= ASYNC_CHECK_CD;
+
+ /* process tty input control flags */
+
+ info->read_status_mask = RXSTATUS_OVERRUN;
+ if (I_INPCK(info->tty))
+ info->read_status_mask |= RXSTATUS_PARITY_ERROR | RXSTATUS_FRAMING_ERROR;
+ if (I_BRKINT(info->tty) || I_PARMRK(info->tty))
+ info->read_status_mask |= RXSTATUS_BREAK_RECEIVED;
+
+ if (I_IGNPAR(info->tty))
+ info->ignore_status_mask |= RXSTATUS_PARITY_ERROR | RXSTATUS_FRAMING_ERROR;
+ if (I_IGNBRK(info->tty)) {
+ info->ignore_status_mask |= RXSTATUS_BREAK_RECEIVED;
+ /* If ignoring parity and break indicators, ignore
+ * overruns too. (For real raw support).
+ */
+ if (I_IGNPAR(info->tty))
+ info->ignore_status_mask |= RXSTATUS_OVERRUN;
+ }
+
+ /* reprogram the hardware */


+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+

+ usc_stop_receiver(info);
+ usc_stop_transmitter(info);
+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;
+

+ if ( info->params.mode == MGSL_MODE_HDLC )

+ usc_set_sync_mode(info);
+ else
+ usc_set_async_mode(info);
+
+ usc_set_serial_signals(info);
+
+ /* enable modem signal IRQs and read initial signal states */
+ usc_EnableStatusIrqs(info,SICR_CTS+SICR_DSR+SICR_DCD+SICR_RI);
+ usc_EnableInterrupts(info, IO_PIN);
+ usc_get_serial_signals(info);
+
+ if ( cflag & CREAD )
+ usc_start_receiver(info);
+
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+} /* end of mgsl_change_params() */
+
+/* mgsl_put_char()
+ *
+ * Add a character to the transmit buffer.
+ *
+ * Arguments: tty pointer to tty information structure
+ * ch character to add to transmit buffer


+ *
+ * Return Value: None
+ */

+static void mgsl_put_char(struct tty_struct *tty, unsigned char ch)
+{
+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;


+ unsigned long flags;
+

+ if ( debug_level >= DEBUG_LEVEL_INFO ) {

+ printk( "%s(%d):mgsl_put_char(%d) on %s\n",
+ __FILE__,__LINE__,ch,info->device_name);
+ }
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_put_char"))
+ return;
+
+ if (!tty || !info->xmit_buf)
+ return;


+
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+

+ if ( (info->params.mode != MGSL_MODE_HDLC) ||
+ !info->tx_active ) {
+
+ if (info->xmit_cnt < SERIAL_XMIT_SIZE - 1) {
+ info->xmit_buf[info->xmit_head++] = ch;
+ info->xmit_head &= SERIAL_XMIT_SIZE-1;
+ info->xmit_cnt++;
+ }


+ }
+
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);

+
+} /* end of mgsl_put_char() */
+
+/* mgsl_flush_chars()
+ *
+ * Enable transmitter so remaining characters in the
+ * transmit buffer are sent.
+ *
+ * Arguments: tty pointer to tty information structure


+ * Return Value: None
+ */

+static void mgsl_flush_chars(struct tty_struct *tty)
+{


+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;

+ unsigned long flags;
+

+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):mgsl_flush_chars() entry on %s xmit_cnt=%d\n",
+ __FILE__,__LINE__,info->device_name,info->xmit_cnt);
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_flush_chars"))
+ return;
+
+ if (info->xmit_cnt <= 0 || tty->stopped || tty->hw_stopped ||
+ !info->xmit_buf)
+ return;
+


+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):mgsl_flush_chars() entry on %s starting transmitter\n",


+ __FILE__,__LINE__,info->device_name );
+

+ spin_lock_irqsave(&info->irq_spinlock,flags);
+
+ if (!info->tx_active) {
+ if ( (info->params.mode == MGSL_MODE_HDLC) &&
+ info->xmit_cnt ) {
+ /* operating in synchronous (frame oriented) mode */
+ /* copy data from circular xmit_buf to */
+ /* transmit DMA buffer. */
+ mgsl_load_tx_dma_buffer(info,
+ info->xmit_buf,info->xmit_cnt);
+ }
+ usc_start_transmitter(info);


+ }
+
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);

+
+} /* end of mgsl_flush_chars() */
+
+/* mgsl_write()
+ *
+ * Send a block of data


+ *
+ * Arguments:
+ *

+ * tty pointer to tty information structure
+ * from_user flag: 1 = from user process
+ * buf pointer to buffer containing send data
+ * count size of send data in bytes
+ *
+ * Return Value: number of characters written
+ */
+static int mgsl_write(struct tty_struct * tty, int from_user,
+ const unsigned char *buf, int count)
+{
+ int c, ret = 0, err;
+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;


+ unsigned long flags;
+

+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):mgsl_write(%s) count=%d\n",
+ __FILE__,__LINE__,info->device_name,count);
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_write"))
+ goto cleanup;
+
+ if (!tty || !info->xmit_buf || !tmp_buf)
+ goto cleanup;
+


+ if ( info->params.mode == MGSL_MODE_HDLC ) {

+ /* operating in synchronous (frame oriented) mode */
+
+ if (info->tx_active) {
+ ret = 0; goto cleanup;
+ }
+
+ if ( info->xmit_cnt ) {
+ /* Send accumulated from send_char() calls */
+ /* as frame and wait before accepting more data. */
+ ret = 0;
+
+ /* copy data from circular xmit_buf to */
+ /* transmit DMA buffer. */
+ mgsl_load_tx_dma_buffer(info,
+ info->xmit_buf,info->xmit_cnt);


+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):mgsl_write(%s) sync xmit_cnt flushing\n",
+ __FILE__,__LINE__,info->device_name);
+ } else {


+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):mgsl_write(%s) sync transmit accepted\n",
+ __FILE__,__LINE__,info->device_name);
+ ret = count;
+ info->xmit_cnt = count;
+ if (from_user) {
+ down(&tmp_buf_sem);
+ COPY_FROM_USER(err,tmp_buf, buf, count);
+ if (err) {


+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):mgsl_write(%s) sync user buf copy failed\n",
+ __FILE__,__LINE__,info->device_name);
+ ret = -EFAULT;
+ } else
+ mgsl_load_tx_dma_buffer(info,tmp_buf,count);
+ up(&tmp_buf_sem);
+ }
+ else
+ mgsl_load_tx_dma_buffer(info,buf,count);
+ }
+ } else {
+ if (from_user) {
+ down(&tmp_buf_sem);
+ while (1) {
+ c = MIN(count,
+ MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ if (c <= 0)
+ break;
+
+ COPY_FROM_USER(err,tmp_buf, buf, c);
+ c -= err;
+ if (!c) {
+ if (!ret)
+ ret = -EFAULT;
+ break;
+ }
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ c = MIN(c, MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ memcpy(info->xmit_buf + info->xmit_head, tmp_buf, c);
+ info->xmit_head = ((info->xmit_head + c) &
+ (SERIAL_XMIT_SIZE-1));
+ info->xmit_cnt += c;
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ up(&tmp_buf_sem);
+ } else {
+ while (1) {
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ c = MIN(count,
+ MIN(SERIAL_XMIT_SIZE - info->xmit_cnt - 1,
+ SERIAL_XMIT_SIZE - info->xmit_head));
+ if (c <= 0) {
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ break;
+ }
+ memcpy(info->xmit_buf + info->xmit_head, buf, c);
+ info->xmit_head = ((info->xmit_head + c) &
+ (SERIAL_XMIT_SIZE-1));
+ info->xmit_cnt += c;
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ buf += c;
+ count -= c;
+ ret += c;
+ }
+ }
+ }
+
+ if (info->xmit_cnt && !tty->stopped && !tty->hw_stopped) {
+ spin_lock_irqsave(&info->irq_spinlock,flags);
+ if (!info->tx_active)


+ usc_start_transmitter(info);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+ }

+cleanup:

+ if ( debug_level >= DEBUG_LEVEL_INFO )

+ printk( "%s(%d):mgsl_write(%s) returning=%d\n",
+ __FILE__,__LINE__,info->device_name,ret);


+
+ return ret;
+

+} /* end of mgsl_write() */
+
+/* mgsl_write_room()
+ *
+ * Return the count of free bytes in transmit buffer
+ *

+ * Arguments: tty pointer to tty info structure

+ * Return Value: None
+ */
+static int mgsl_write_room(struct tty_struct *tty)
+{


+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;

+ int ret;
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_write_room"))
+ return 0;
+ ret = SERIAL_XMIT_SIZE - info->xmit_cnt - 1;
+ if (ret < 0)
+ ret = 0;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)

+ printk("%s(%d):mgsl_write_room(%s)=%d\n",
+ __FILE__,__LINE__, info->device_name,ret );
+

+ if ( info->params.mode == MGSL_MODE_HDLC ) {

+ /* operating in synchronous (frame oriented) mode */
+ if ( info->tx_active )
+ return 0;
+ else
+ return HDLC_MAX_FRAME_SIZE;
+ }


+
+ return ret;
+

+} /* end of mgsl_write_room() */
+
+/* mgsl_chars_in_buffer()
+ *
+ * Return the count of bytes in transmit buffer
+ *

+ * Arguments: tty pointer to tty info structure

+ * Return Value: None
+ */
+static int mgsl_chars_in_buffer(struct tty_struct *tty)
+{


+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;

+
+ if (debug_level >= DEBUG_LEVEL_INFO)
+ printk("%s(%d):mgsl_chars_in_buffer(%s)\n",
+ __FILE__,__LINE__, info->device_name );
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_chars_in_buffer"))
+ return 0;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)

+ printk("%s(%d):mgsl_chars_in_buffer(%s)=%d\n",
+ __FILE__,__LINE__, info->device_name,info->xmit_cnt );
+

+ if ( info->params.mode == MGSL_MODE_HDLC ) {

+ /* operating in synchronous (frame oriented) mode */
+ if ( info->tx_active )
+ return info->tx_buffer_list[0].rcc;
+ else


+ return 0;
+ }
+

+ return info->xmit_cnt;
+} /* end of mgsl_chars_in_buffer() */
+
+/* mgsl_flush_buffer()
+ *
+ * Discard all data in the send buffer
+ *

+ * Arguments: tty pointer to tty info structure

+ * Return Value: None
+ */

+static void mgsl_flush_buffer(struct tty_struct *tty)
+{


+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;

+ unsigned long flags;
+

+ if (debug_level >= DEBUG_LEVEL_INFO)

+ printk("%s(%d):mgsl_flush_buffer(%s) entry\n",
+ __FILE__,__LINE__, info->device_name );
+
+ if (mgsl_paranoia_check(info, tty->device, "mgsl_flush_buffer"))
+ return;
+
+ spin_lock_irqsave(&info->irq_spinlock,flags);

+ info->xmit_cnt = info->xmit_head = info->xmit_tail = 0;

+ del_timer(&info->tx_timer);
+ spin_unlock_irqrestore(&info->irq_spinlock,flags);
+
+ wake_up_interruptible(&tty->write_wait);
+ if ((tty->flags & (1 << TTY_DO_WRITE_WAKEUP)) &&
+ tty->ldisc.write_wakeup)
+ (tty->ldisc.write_wakeup)(tty);
+
+} /* end of mgsl_flush_buffer() */
+
+/* mgsl_send_xchar()
+ *
+ * Send a high-priority XON/XOFF character


+ *
+ * Arguments: tty pointer to tty info structure

+ * ch character to send


+ * Return Value: None
+ */

+static void mgsl_send_xchar(struct tty_struct *tty, char ch)
+{
+ struct mgsl_struct *info = (struct mgsl_struct *)tty->driver_data;


SHAR_EOF
true || echo 'restore of patch-2.2.5 failed'
fi

echo 'End of part 3'
echo 'File patch-2.2.5 is continued in part 4'
echo 4 > _shar_seq_.tmp

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