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cd354f1ae7
After Al Viro (finally) succeeded in removing the sched.h #include in module.h recently, it makes sense again to remove other superfluous sched.h includes. There are quite a lot of files which include it but don't actually need anything defined in there. Presumably these includes were once needed for macros that used to live in sched.h, but moved to other header files in the course of cleaning it up. To ease the pain, this time I did not fiddle with any header files and only removed #includes from .c-files, which tend to cause less trouble. Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha, arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig, allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all configs in arch/arm/configs on arm. I also checked that no new warnings were introduced by the patch (actually, some warnings are removed that were emitted by unnecessarily included header files). Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Acked-by: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
447 lines
12 KiB
C
447 lines
12 KiB
C
#define AUTOSENSE
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#define PSEUDO_DMA
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/*
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* Trantor T128/T128F/T228 driver
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* Note : architecturally, the T100 and T130 are different and won't
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* work
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*
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* Copyright 1993, Drew Eckhardt
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* Visionary Computing
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* (Unix and Linux consulting and custom programming)
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* drew@colorado.edu
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* +1 (303) 440-4894
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*
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* DISTRIBUTION RELEASE 3.
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*
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* For more information, please consult
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*
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* Trantor Systems, Ltd.
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* T128/T128F/T228 SCSI Host Adapter
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* Hardware Specifications
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*
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* Trantor Systems, Ltd.
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* 5415 Randall Place
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* Fremont, CA 94538
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* 1+ (415) 770-1400, FAX 1+ (415) 770-9910
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*
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* and
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*
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* NCR 5380 Family
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* SCSI Protocol Controller
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* Databook
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*
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* NCR Microelectronics
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* 1635 Aeroplaza Drive
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* Colorado Springs, CO 80916
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* 1+ (719) 578-3400
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* 1+ (800) 334-5454
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*/
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/*
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* Options :
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* AUTOSENSE - if defined, REQUEST SENSE will be performed automatically
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* for commands that return with a CHECK CONDITION status.
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*
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* PSEUDO_DMA - enables PSEUDO-DMA hardware, should give a 3-4X performance
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* increase compared to polled I/O.
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*
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* PARITY - enable parity checking. Not supported.
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*
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* SCSI2 - enable support for SCSI-II tagged queueing. Untested.
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*
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*
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* UNSAFE - leave interrupts enabled during pseudo-DMA transfers. You
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* only really want to use this if you're having a problem with
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* dropped characters during high speed communications, and even
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* then, you're going to be better off twiddling with transfersize.
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*
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* USLEEP - enable support for devices that don't disconnect. Untested.
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*
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* The card is detected and initialized in one of several ways :
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* 1. Autoprobe (default) - since the board is memory mapped,
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* a BIOS signature is scanned for to locate the registers.
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* An interrupt is triggered to autoprobe for the interrupt
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* line.
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*
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* 2. With command line overrides - t128=address,irq may be
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* used on the LILO command line to override the defaults.
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*
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* 3. With the T128_OVERRIDE compile time define. This is
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* specified as an array of address, irq tuples. Ie, for
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* one board at the default 0xcc000 address, IRQ5, I could say
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* -DT128_OVERRIDE={{0xcc000, 5}}
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*
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* Note that if the override methods are used, place holders must
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* be specified for other boards in the system.
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*
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* T128/T128F jumper/dipswitch settings (note : on my sample, the switches
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* were epoxy'd shut, meaning I couldn't change the 0xcc000 base address) :
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*
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* T128 Sw7 Sw8 Sw6 = 0ws Sw5 = boot
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* T128F Sw6 Sw7 Sw5 = 0ws Sw4 = boot Sw8 = floppy disable
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* cc000 off off
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* c8000 off on
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* dc000 on off
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* d8000 on on
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*
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*
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* Interrupts
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* There is a 12 pin jumper block, jp1, numbered as follows :
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* T128 (JP1) T128F (J5)
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* 2 4 6 8 10 12 11 9 7 5 3 1
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* 1 3 5 7 9 11 12 10 8 6 4 2
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*
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* 3 2-4
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* 5 1-3
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* 7 3-5
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* T128F only
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* 10 8-10
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* 12 7-9
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* 14 10-12
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* 15 9-11
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*/
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/*
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* $Log: t128.c,v $
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*/
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#include <asm/system.h>
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#include <linux/signal.h>
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#include <linux/io.h>
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#include <linux/blkdev.h>
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#include <linux/interrupt.h>
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#include <linux/stat.h>
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#include <linux/init.h>
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#include <linux/module.h>
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#include <linux/delay.h>
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#include "scsi.h"
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#include <scsi/scsi_host.h>
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#include "t128.h"
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#define AUTOPROBE_IRQ
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#include "NCR5380.h"
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static struct override {
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unsigned long address;
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int irq;
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} overrides
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#ifdef T128_OVERRIDE
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[] __initdata = T128_OVERRIDE;
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#else
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[4] __initdata = {{0, IRQ_AUTO}, {0, IRQ_AUTO},
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{0 ,IRQ_AUTO}, {0, IRQ_AUTO}};
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#endif
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#define NO_OVERRIDES ARRAY_SIZE(overrides)
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static struct base {
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unsigned int address;
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int noauto;
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} bases[] __initdata = {
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{ 0xcc000, 0}, { 0xc8000, 0}, { 0xdc000, 0}, { 0xd8000, 0}
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};
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#define NO_BASES ARRAY_SIZE(bases)
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static struct signature {
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const char *string;
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int offset;
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} signatures[] __initdata = {
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{"TSROM: SCSI BIOS, Version 1.12", 0x36},
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};
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#define NO_SIGNATURES ARRAY_SIZE(signatures)
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/*
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* Function : t128_setup(char *str, int *ints)
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*
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* Purpose : LILO command line initialization of the overrides array,
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*
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* Inputs : str - unused, ints - array of integer parameters with ints[0]
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* equal to the number of ints.
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*
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*/
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void __init t128_setup(char *str, int *ints){
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static int commandline_current = 0;
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int i;
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if (ints[0] != 2)
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printk("t128_setup : usage t128=address,irq\n");
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else
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if (commandline_current < NO_OVERRIDES) {
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overrides[commandline_current].address = ints[1];
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overrides[commandline_current].irq = ints[2];
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for (i = 0; i < NO_BASES; ++i)
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if (bases[i].address == ints[1]) {
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bases[i].noauto = 1;
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break;
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}
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++commandline_current;
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}
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}
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/*
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* Function : int t128_detect(struct scsi_host_template * tpnt)
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*
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* Purpose : detects and initializes T128,T128F, or T228 controllers
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* that were autoprobed, overridden on the LILO command line,
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* or specified at compile time.
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*
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* Inputs : tpnt - template for this SCSI adapter.
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*
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* Returns : 1 if a host adapter was found, 0 if not.
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*
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*/
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int __init t128_detect(struct scsi_host_template * tpnt){
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static int current_override = 0, current_base = 0;
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struct Scsi_Host *instance;
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unsigned long base;
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void __iomem *p;
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int sig, count;
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tpnt->proc_name = "t128";
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tpnt->proc_info = &t128_proc_info;
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for (count = 0; current_override < NO_OVERRIDES; ++current_override) {
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base = 0;
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p = NULL;
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if (overrides[current_override].address) {
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base = overrides[current_override].address;
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p = ioremap(bases[current_base].address, 0x2000);
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if (!p)
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base = 0;
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} else
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for (; !base && (current_base < NO_BASES); ++current_base) {
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#if (TDEBUG & TDEBUG_INIT)
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printk("scsi-t128 : probing address %08x\n", bases[current_base].address);
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#endif
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if (bases[current_base].noauto)
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continue;
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p = ioremap(bases[current_base].address, 0x2000);
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if (!p)
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continue;
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for (sig = 0; sig < NO_SIGNATURES; ++sig)
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if (check_signature(p + signatures[sig].offset,
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signatures[sig].string,
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strlen(signatures[sig].string))) {
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base = bases[current_base].address;
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#if (TDEBUG & TDEBUG_INIT)
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printk("scsi-t128 : detected board.\n");
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#endif
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goto found;
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}
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iounmap(p);
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}
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#if defined(TDEBUG) && (TDEBUG & TDEBUG_INIT)
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printk("scsi-t128 : base = %08x\n", (unsigned int) base);
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#endif
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if (!base)
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break;
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found:
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instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
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if(instance == NULL)
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break;
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instance->base = base;
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((struct NCR5380_hostdata *)instance->hostdata)->base = p;
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NCR5380_init(instance, 0);
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if (overrides[current_override].irq != IRQ_AUTO)
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instance->irq = overrides[current_override].irq;
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else
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instance->irq = NCR5380_probe_irq(instance, T128_IRQS);
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if (instance->irq != SCSI_IRQ_NONE)
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if (request_irq(instance->irq, t128_intr, IRQF_DISABLED, "t128", instance)) {
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printk("scsi%d : IRQ%d not free, interrupts disabled\n",
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instance->host_no, instance->irq);
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instance->irq = SCSI_IRQ_NONE;
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}
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if (instance->irq == SCSI_IRQ_NONE) {
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printk("scsi%d : interrupts not enabled. for better interactive performance,\n", instance->host_no);
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printk("scsi%d : please jumper the board for a free IRQ.\n", instance->host_no);
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}
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#if defined(TDEBUG) && (TDEBUG & TDEBUG_INIT)
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printk("scsi%d : irq = %d\n", instance->host_no, instance->irq);
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#endif
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printk("scsi%d : at 0x%08lx", instance->host_no, instance->base);
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if (instance->irq == SCSI_IRQ_NONE)
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printk (" interrupts disabled");
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else
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printk (" irq %d", instance->irq);
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printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
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CAN_QUEUE, CMD_PER_LUN, T128_PUBLIC_RELEASE);
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NCR5380_print_options(instance);
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printk("\n");
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++current_override;
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++count;
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}
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return count;
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}
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static int t128_release(struct Scsi_Host *shost)
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{
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NCR5380_local_declare();
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NCR5380_setup(shost);
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if (shost->irq)
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free_irq(shost->irq, NULL);
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NCR5380_exit(shost);
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if (shost->io_port && shost->n_io_port)
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release_region(shost->io_port, shost->n_io_port);
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scsi_unregister(shost);
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iounmap(base);
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return 0;
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}
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/*
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* Function : int t128_biosparam(Disk * disk, struct block_device *dev, int *ip)
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*
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* Purpose : Generates a BIOS / DOS compatible H-C-S mapping for
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* the specified device / size.
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*
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* Inputs : size = size of device in sectors (512 bytes), dev = block device
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* major / minor, ip[] = {heads, sectors, cylinders}
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*
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* Returns : always 0 (success), initializes ip
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*
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*/
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/*
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* XXX Most SCSI boards use this mapping, I could be incorrect. Some one
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* using hard disks on a trantor should verify that this mapping corresponds
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* to that used by the BIOS / ASPI driver by running the linux fdisk program
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* and matching the H_C_S coordinates to what DOS uses.
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*/
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int t128_biosparam(struct scsi_device *sdev, struct block_device *bdev,
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sector_t capacity, int * ip)
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{
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ip[0] = 64;
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ip[1] = 32;
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ip[2] = capacity >> 11;
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return 0;
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}
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/*
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* Function : int NCR5380_pread (struct Scsi_Host *instance,
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* unsigned char *dst, int len)
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*
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* Purpose : Fast 5380 pseudo-dma read function, transfers len bytes to
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* dst
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*
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* Inputs : dst = destination, len = length in bytes
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*
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* Returns : 0 on success, non zero on a failure such as a watchdog
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* timeout.
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*/
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static inline int NCR5380_pread (struct Scsi_Host *instance, unsigned char *dst,
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int len) {
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NCR5380_local_declare();
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void __iomem *reg;
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unsigned char *d = dst;
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register int i = len;
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NCR5380_setup(instance);
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reg = base + T_DATA_REG_OFFSET;
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#if 0
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for (; i; --i) {
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while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
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#else
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while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
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for (; i; --i) {
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#endif
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*d++ = readb(reg);
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}
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if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
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unsigned char tmp;
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void __iomem *foo = base + T_CONTROL_REG_OFFSET;
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tmp = readb(foo);
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writeb(tmp | T_CR_CT, foo);
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writeb(tmp, foo);
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printk("scsi%d : watchdog timer fired in NCR5380_pread()\n",
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instance->host_no);
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return -1;
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} else
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return 0;
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}
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/*
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* Function : int NCR5380_pwrite (struct Scsi_Host *instance,
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* unsigned char *src, int len)
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*
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* Purpose : Fast 5380 pseudo-dma write function, transfers len bytes from
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* src
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*
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* Inputs : src = source, len = length in bytes
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*
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* Returns : 0 on success, non zero on a failure such as a watchdog
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* timeout.
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*/
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static inline int NCR5380_pwrite (struct Scsi_Host *instance, unsigned char *src,
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int len) {
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NCR5380_local_declare();
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void __iomem *reg;
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unsigned char *s = src;
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register int i = len;
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NCR5380_setup(instance);
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reg = base + T_DATA_REG_OFFSET;
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#if 0
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for (; i; --i) {
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while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
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#else
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while (!(readb(base+T_STATUS_REG_OFFSET) & T_ST_RDY)) barrier();
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for (; i; --i) {
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#endif
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writeb(*s++, reg);
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}
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if (readb(base + T_STATUS_REG_OFFSET) & T_ST_TIM) {
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unsigned char tmp;
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void __iomem *foo = base + T_CONTROL_REG_OFFSET;
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tmp = readb(foo);
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writeb(tmp | T_CR_CT, foo);
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writeb(tmp, foo);
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printk("scsi%d : watchdog timer fired in NCR5380_pwrite()\n",
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instance->host_no);
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return -1;
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} else
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return 0;
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}
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MODULE_LICENSE("GPL");
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#include "NCR5380.c"
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static struct scsi_host_template driver_template = {
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.name = "Trantor T128/T128F/T228",
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.detect = t128_detect,
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.release = t128_release,
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.queuecommand = t128_queue_command,
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.eh_abort_handler = t128_abort,
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.eh_bus_reset_handler = t128_bus_reset,
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.bios_param = t128_biosparam,
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.can_queue = CAN_QUEUE,
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.this_id = 7,
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.sg_tablesize = SG_ALL,
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.cmd_per_lun = CMD_PER_LUN,
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.use_clustering = DISABLE_CLUSTERING,
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};
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#include "scsi_module.c"
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