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![Tim Schmielau](/assets/img/avatar_default.png)
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>
599 lines
15 KiB
C
599 lines
15 KiB
C
/*
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* Generic Macintosh NCR5380 driver
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*
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* Copyright 1998, Michael Schmitz <mschmitz@lbl.gov>
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*
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* derived in part from:
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*/
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/*
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* Generic Generic NCR5380 driver
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*
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* Copyright 1995, Russell King
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*
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* ALPHA RELEASE 1.
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*
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* For more information, please consult
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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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* $Log: mac_NCR5380.c,v $
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*/
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#include <linux/types.h>
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#include <linux/stddef.h>
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#include <linux/ctype.h>
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#include <linux/delay.h>
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#include <linux/module.h>
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#include <linux/signal.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <linux/blkdev.h>
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#include <linux/interrupt.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#include <asm/system.h>
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#include <asm/macintosh.h>
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#include <asm/macints.h>
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#include <asm/machw.h>
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#include <asm/mac_via.h>
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#include "scsi.h"
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#include <scsi/scsi_host.h>
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#include "mac_scsi.h"
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#include "NCR5380.h"
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#if 0
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#define NDEBUG (NDEBUG_INTR | NDEBUG_PSEUDO_DMA | NDEBUG_ARBITRATION | NDEBUG_SELECTION | NDEBUG_RESELECTION)
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#else
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#define NDEBUG (NDEBUG_ABORT)
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#endif
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#define RESET_BOOT
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#define DRIVER_SETUP
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extern void via_scsi_clear(void);
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#ifdef RESET_BOOT
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static void mac_scsi_reset_boot(struct Scsi_Host *instance);
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#endif
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static int setup_called = 0;
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static int setup_can_queue = -1;
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static int setup_cmd_per_lun = -1;
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static int setup_sg_tablesize = -1;
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static int setup_use_pdma = -1;
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#ifdef SUPPORT_TAGS
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static int setup_use_tagged_queuing = -1;
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#endif
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static int setup_hostid = -1;
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/* Time (in jiffies) to wait after a reset; the SCSI standard calls for 250ms,
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* we usually do 0.5s to be on the safe side. But Toshiba CD-ROMs once more
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* need ten times the standard value... */
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#define TOSHIBA_DELAY
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#ifdef TOSHIBA_DELAY
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#define AFTER_RESET_DELAY (5*HZ/2)
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#else
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#define AFTER_RESET_DELAY (HZ/2)
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#endif
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static volatile unsigned char *mac_scsi_regp = NULL;
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static volatile unsigned char *mac_scsi_drq = NULL;
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static volatile unsigned char *mac_scsi_nodrq = NULL;
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/*
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* NCR 5380 register access functions
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*/
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#if 0
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/* Debug versions */
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#define CTRL(p,v) (*ctrl = (v))
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static char macscsi_read(struct Scsi_Host *instance, int reg)
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{
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int iobase = instance->io_port;
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int i;
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int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
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CTRL(iobase, 0);
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i = in_8(iobase + (reg<<4));
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CTRL(iobase, 0x40);
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return i;
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}
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static void macscsi_write(struct Scsi_Host *instance, int reg, int value)
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{
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int iobase = instance->io_port;
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int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
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CTRL(iobase, 0);
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out_8(iobase + (reg<<4), value);
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CTRL(iobase, 0x40);
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}
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#else
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/* Fast versions */
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static __inline__ char macscsi_read(struct Scsi_Host *instance, int reg)
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{
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return in_8(instance->io_port + (reg<<4));
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}
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static __inline__ void macscsi_write(struct Scsi_Host *instance, int reg, int value)
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{
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out_8(instance->io_port + (reg<<4), value);
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}
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#endif
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/*
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* Function : mac_scsi_setup(char *str)
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*
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* Purpose : booter command line initialization of the overrides array,
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*
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* Inputs : str - comma delimited list of options
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*
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*/
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static int __init mac_scsi_setup(char *str) {
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#ifdef DRIVER_SETUP
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int ints[7];
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(void)get_options( str, ARRAY_SIZE(ints), ints);
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if (setup_called++ || ints[0] < 1 || ints[0] > 6) {
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printk(KERN_WARNING "scsi: <mac5380>"
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" Usage: mac5380=<can_queue>[,<cmd_per_lun>,<sg_tablesize>,<hostid>,<use_tags>,<use_pdma>]\n");
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printk(KERN_ALERT "scsi: <mac5380> Bad Penguin parameters?\n");
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return 0;
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}
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if (ints[0] >= 1) {
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if (ints[1] > 0)
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/* no limits on this, just > 0 */
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setup_can_queue = ints[1];
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}
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if (ints[0] >= 2) {
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if (ints[2] > 0)
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setup_cmd_per_lun = ints[2];
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}
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if (ints[0] >= 3) {
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if (ints[3] >= 0) {
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setup_sg_tablesize = ints[3];
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/* Must be <= SG_ALL (255) */
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if (setup_sg_tablesize > SG_ALL)
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setup_sg_tablesize = SG_ALL;
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}
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}
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if (ints[0] >= 4) {
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/* Must be between 0 and 7 */
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if (ints[4] >= 0 && ints[4] <= 7)
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setup_hostid = ints[4];
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else if (ints[4] > 7)
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printk(KERN_WARNING "mac_scsi_setup: invalid host ID %d !\n", ints[4] );
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}
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#ifdef SUPPORT_TAGS
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if (ints[0] >= 5) {
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if (ints[5] >= 0)
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setup_use_tagged_queuing = !!ints[5];
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}
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if (ints[0] == 6) {
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if (ints[6] >= 0)
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setup_use_pdma = ints[6];
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}
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#else
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if (ints[0] == 5) {
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if (ints[5] >= 0)
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setup_use_pdma = ints[5];
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}
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#endif /* SUPPORT_TAGS */
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#endif /* DRIVER_SETUP */
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return 1;
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}
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__setup("mac5380=", mac_scsi_setup);
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/*
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* If you want to find the instance with (k)gdb ...
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*/
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#if NDEBUG
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static struct Scsi_Host *default_instance;
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#endif
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/*
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* Function : int macscsi_detect(struct scsi_host_template * tpnt)
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*
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* Purpose : initializes mac NCR5380 driver based on the
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* command line / compile time port and irq definitions.
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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 macscsi_detect(struct scsi_host_template * tpnt)
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{
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static int called = 0;
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int flags = 0;
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struct Scsi_Host *instance;
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if (!MACH_IS_MAC || called)
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return( 0 );
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if (macintosh_config->scsi_type != MAC_SCSI_OLD)
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return( 0 );
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/* setup variables */
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tpnt->can_queue =
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(setup_can_queue > 0) ? setup_can_queue : CAN_QUEUE;
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tpnt->cmd_per_lun =
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(setup_cmd_per_lun > 0) ? setup_cmd_per_lun : CMD_PER_LUN;
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tpnt->sg_tablesize =
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(setup_sg_tablesize >= 0) ? setup_sg_tablesize : SG_TABLESIZE;
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if (setup_hostid >= 0)
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tpnt->this_id = setup_hostid;
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else {
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/* use 7 as default */
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tpnt->this_id = 7;
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}
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#ifdef SUPPORT_TAGS
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if (setup_use_tagged_queuing < 0)
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setup_use_tagged_queuing = USE_TAGGED_QUEUING;
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#endif
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/* Once we support multiple 5380s (e.g. DuoDock) we'll do
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something different here */
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instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
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#if NDEBUG
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default_instance = instance;
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#endif
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if (macintosh_config->ident == MAC_MODEL_IIFX) {
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mac_scsi_regp = via1+0x8000;
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mac_scsi_drq = via1+0xE000;
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mac_scsi_nodrq = via1+0xC000;
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/* The IIFX should be able to do true DMA, but pseudo-dma doesn't work */
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flags = FLAG_NO_PSEUDO_DMA;
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} else {
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mac_scsi_regp = via1+0x10000;
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mac_scsi_drq = via1+0x6000;
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mac_scsi_nodrq = via1+0x12000;
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}
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if (! setup_use_pdma)
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flags = FLAG_NO_PSEUDO_DMA;
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instance->io_port = (unsigned long) mac_scsi_regp;
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instance->irq = IRQ_MAC_SCSI;
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#ifdef RESET_BOOT
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mac_scsi_reset_boot(instance);
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#endif
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NCR5380_init(instance, flags);
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instance->n_io_port = 255;
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((struct NCR5380_hostdata *)instance->hostdata)->ctrl = 0;
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if (instance->irq != SCSI_IRQ_NONE)
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if (request_irq(instance->irq, NCR5380_intr, IRQ_FLG_SLOW,
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"ncr5380", instance)) {
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printk(KERN_WARNING "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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printk(KERN_INFO "scsi%d: generic 5380 at port %lX irq", instance->host_no, instance->io_port);
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if (instance->irq == SCSI_IRQ_NONE)
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printk (KERN_INFO "s disabled");
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else
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printk (KERN_INFO " %d", instance->irq);
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printk(KERN_INFO " options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
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instance->can_queue, instance->cmd_per_lun, MACSCSI_PUBLIC_RELEASE);
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printk(KERN_INFO "\nscsi%d:", instance->host_no);
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NCR5380_print_options(instance);
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printk("\n");
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called = 1;
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return 1;
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}
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int macscsi_release (struct Scsi_Host *shpnt)
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{
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if (shpnt->irq != SCSI_IRQ_NONE)
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free_irq (shpnt->irq, NCR5380_intr);
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NCR5380_exit(shpnt);
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return 0;
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}
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#ifdef RESET_BOOT
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/*
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* Our 'bus reset on boot' function
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*/
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static void mac_scsi_reset_boot(struct Scsi_Host *instance)
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{
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unsigned long end;
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NCR5380_local_declare();
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NCR5380_setup(instance);
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/*
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* Do a SCSI reset to clean up the bus during initialization. No messing
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* with the queues, interrupts, or locks necessary here.
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*/
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printk(KERN_INFO "Macintosh SCSI: resetting the SCSI bus..." );
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/* switch off SCSI IRQ - catch an interrupt without IRQ bit set else */
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disable_irq(IRQ_MAC_SCSI);
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/* get in phase */
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NCR5380_write( TARGET_COMMAND_REG,
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PHASE_SR_TO_TCR( NCR5380_read(STATUS_REG) ));
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/* assert RST */
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NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_RST );
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/* The min. reset hold time is 25us, so 40us should be enough */
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udelay( 50 );
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/* reset RST and interrupt */
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NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE );
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NCR5380_read( RESET_PARITY_INTERRUPT_REG );
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for( end = jiffies + AFTER_RESET_DELAY; time_before(jiffies, end); )
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barrier();
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/* switch on SCSI IRQ again */
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enable_irq(IRQ_MAC_SCSI);
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printk(KERN_INFO " done\n" );
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}
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#endif
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const char * macscsi_info (struct Scsi_Host *spnt) {
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return "";
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}
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/*
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Pseudo-DMA: (Ove Edlund)
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The code attempts to catch bus errors that occur if one for example
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"trips over the cable".
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XXX: Since bus errors in the PDMA routines never happen on my
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computer, the bus error code is untested.
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If the code works as intended, a bus error results in Pseudo-DMA
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beeing disabled, meaning that the driver switches to slow handshake.
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If bus errors are NOT extremely rare, this has to be changed.
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*/
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#define CP_IO_TO_MEM(s,d,len) \
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__asm__ __volatile__ \
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(" cmp.w #4,%2\n" \
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" bls 8f\n" \
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" move.w %1,%%d0\n" \
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" neg.b %%d0\n" \
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" and.w #3,%%d0\n" \
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" sub.w %%d0,%2\n" \
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" bra 2f\n" \
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" 1: move.b (%0),(%1)+\n" \
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" 2: dbf %%d0,1b\n" \
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" move.w %2,%%d0\n" \
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" lsr.w #5,%%d0\n" \
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" bra 4f\n" \
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" 3: move.l (%0),(%1)+\n" \
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"31: move.l (%0),(%1)+\n" \
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"32: move.l (%0),(%1)+\n" \
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"33: move.l (%0),(%1)+\n" \
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"34: move.l (%0),(%1)+\n" \
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"35: move.l (%0),(%1)+\n" \
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"36: move.l (%0),(%1)+\n" \
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"37: move.l (%0),(%1)+\n" \
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" 4: dbf %%d0,3b\n" \
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" move.w %2,%%d0\n" \
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" lsr.w #2,%%d0\n" \
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" and.w #7,%%d0\n" \
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" bra 6f\n" \
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" 5: move.l (%0),(%1)+\n" \
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" 6: dbf %%d0,5b\n" \
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" and.w #3,%2\n" \
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" bra 8f\n" \
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" 7: move.b (%0),(%1)+\n" \
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" 8: dbf %2,7b\n" \
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" moveq.l #0, %2\n" \
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" 9: \n" \
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".section .fixup,\"ax\"\n" \
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" .even\n" \
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"90: moveq.l #1, %2\n" \
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" jra 9b\n" \
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".previous\n" \
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".section __ex_table,\"a\"\n" \
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" .align 4\n" \
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" .long 1b,90b\n" \
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" .long 3b,90b\n" \
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" .long 31b,90b\n" \
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" .long 32b,90b\n" \
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" .long 33b,90b\n" \
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" .long 34b,90b\n" \
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" .long 35b,90b\n" \
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" .long 36b,90b\n" \
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" .long 37b,90b\n" \
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" .long 5b,90b\n" \
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" .long 7b,90b\n" \
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".previous" \
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: "=a"(s), "=a"(d), "=d"(len) \
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: "0"(s), "1"(d), "2"(len) \
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: "d0")
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static int macscsi_pread (struct Scsi_Host *instance,
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unsigned char *dst, int len)
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{
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unsigned char *d;
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volatile unsigned char *s;
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NCR5380_local_declare();
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NCR5380_setup(instance);
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s = mac_scsi_drq+0x60;
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d = dst;
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/* These conditions are derived from MacOS */
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while (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)
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&& !(NCR5380_read(STATUS_REG) & SR_REQ))
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;
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if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)
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&& (NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH)) {
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printk(KERN_ERR "Error in macscsi_pread\n");
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return -1;
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}
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CP_IO_TO_MEM(s, d, len);
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if (len != 0) {
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printk(KERN_NOTICE "Bus error in macscsi_pread\n");
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return -1;
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}
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return 0;
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}
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#define CP_MEM_TO_IO(s,d,len) \
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__asm__ __volatile__ \
|
|
(" cmp.w #4,%2\n" \
|
|
" bls 8f\n" \
|
|
" move.w %0,%%d0\n" \
|
|
" neg.b %%d0\n" \
|
|
" and.w #3,%%d0\n" \
|
|
" sub.w %%d0,%2\n" \
|
|
" bra 2f\n" \
|
|
" 1: move.b (%0)+,(%1)\n" \
|
|
" 2: dbf %%d0,1b\n" \
|
|
" move.w %2,%%d0\n" \
|
|
" lsr.w #5,%%d0\n" \
|
|
" bra 4f\n" \
|
|
" 3: move.l (%0)+,(%1)\n" \
|
|
"31: move.l (%0)+,(%1)\n" \
|
|
"32: move.l (%0)+,(%1)\n" \
|
|
"33: move.l (%0)+,(%1)\n" \
|
|
"34: move.l (%0)+,(%1)\n" \
|
|
"35: move.l (%0)+,(%1)\n" \
|
|
"36: move.l (%0)+,(%1)\n" \
|
|
"37: move.l (%0)+,(%1)\n" \
|
|
" 4: dbf %%d0,3b\n" \
|
|
" move.w %2,%%d0\n" \
|
|
" lsr.w #2,%%d0\n" \
|
|
" and.w #7,%%d0\n" \
|
|
" bra 6f\n" \
|
|
" 5: move.l (%0)+,(%1)\n" \
|
|
" 6: dbf %%d0,5b\n" \
|
|
" and.w #3,%2\n" \
|
|
" bra 8f\n" \
|
|
" 7: move.b (%0)+,(%1)\n" \
|
|
" 8: dbf %2,7b\n" \
|
|
" moveq.l #0, %2\n" \
|
|
" 9: \n" \
|
|
".section .fixup,\"ax\"\n" \
|
|
" .even\n" \
|
|
"90: moveq.l #1, %2\n" \
|
|
" jra 9b\n" \
|
|
".previous\n" \
|
|
".section __ex_table,\"a\"\n" \
|
|
" .align 4\n" \
|
|
" .long 1b,90b\n" \
|
|
" .long 3b,90b\n" \
|
|
" .long 31b,90b\n" \
|
|
" .long 32b,90b\n" \
|
|
" .long 33b,90b\n" \
|
|
" .long 34b,90b\n" \
|
|
" .long 35b,90b\n" \
|
|
" .long 36b,90b\n" \
|
|
" .long 37b,90b\n" \
|
|
" .long 5b,90b\n" \
|
|
" .long 7b,90b\n" \
|
|
".previous" \
|
|
: "=a"(s), "=a"(d), "=d"(len) \
|
|
: "0"(s), "1"(d), "2"(len) \
|
|
: "d0")
|
|
|
|
static int macscsi_pwrite (struct Scsi_Host *instance,
|
|
unsigned char *src, int len)
|
|
{
|
|
unsigned char *s;
|
|
volatile unsigned char *d;
|
|
|
|
NCR5380_local_declare();
|
|
NCR5380_setup(instance);
|
|
|
|
s = src;
|
|
d = mac_scsi_drq;
|
|
|
|
/* These conditions are derived from MacOS */
|
|
|
|
while (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)
|
|
&& (!(NCR5380_read(STATUS_REG) & SR_REQ)
|
|
|| (NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH)))
|
|
;
|
|
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)) {
|
|
printk(KERN_ERR "Error in macscsi_pwrite\n");
|
|
return -1;
|
|
}
|
|
|
|
CP_MEM_TO_IO(s, d, len);
|
|
|
|
if (len != 0) {
|
|
printk(KERN_NOTICE "Bus error in macscsi_pwrite\n");
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/* These control the behaviour of the generic 5380 core */
|
|
#define AUTOSENSE
|
|
#define PSEUDO_DMA
|
|
|
|
#include "NCR5380.c"
|
|
|
|
static struct scsi_host_template driver_template = {
|
|
.proc_name = "Mac5380",
|
|
.proc_info = macscsi_proc_info,
|
|
.name = "Macintosh NCR5380 SCSI",
|
|
.detect = macscsi_detect,
|
|
.release = macscsi_release,
|
|
.info = macscsi_info,
|
|
.queuecommand = macscsi_queue_command,
|
|
.eh_abort_handler = macscsi_abort,
|
|
.eh_bus_reset_handler = macscsi_bus_reset,
|
|
.can_queue = CAN_QUEUE,
|
|
.this_id = 7,
|
|
.sg_tablesize = SG_ALL,
|
|
.cmd_per_lun = CMD_PER_LUN,
|
|
.unchecked_isa_dma = 0,
|
|
.use_clustering = DISABLE_CLUSTERING
|
|
};
|
|
|
|
|
|
#include "scsi_module.c"
|