| 1 |
1275 |
phoenix |
/*
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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: not supported by cvs2svn $
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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/sched.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <linux/blk.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 "hosts.h"
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#include "mac_scsi.h"
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#include "NCR5380.h"
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#include "constants.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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#define ENABLE_IRQ() mac_enable_irq( IRQ_MAC_SCSI );
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#define DISABLE_IRQ() mac_disable_irq( IRQ_MAC_SCSI );
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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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| 147 |
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| 148 |
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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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| 200 |
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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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| 218 |
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* If you want to find the instance with (k)gdb ...
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| 219 |
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*/
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| 220 |
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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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| 223 |
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| 224 |
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/*
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| 225 |
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* Function : int macscsi_detect(Scsi_Host_Template * tpnt)
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| 226 |
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*
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| 227 |
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* Purpose : initializes mac NCR5380 driver based on the
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| 228 |
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* command line / compile time port and irq definitions.
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| 229 |
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*
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| 230 |
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* Inputs : tpnt - template for this SCSI adapter.
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| 231 |
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*
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| 232 |
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* Returns : 1 if a host adapter was found, 0 if not.
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| 233 |
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*
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| 234 |
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*/
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| 235 |
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| 236 |
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int macscsi_detect(Scsi_Host_Template * tpnt)
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| 237 |
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{
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| 238 |
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static int called = 0;
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| 239 |
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int flags = 0;
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| 240 |
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struct Scsi_Host *instance;
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| 241 |
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| 242 |
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if (!MACH_IS_MAC || called)
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| 243 |
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return( 0 );
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| 244 |
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| 245 |
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if (macintosh_config->scsi_type != MAC_SCSI_OLD)
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| 246 |
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return( 0 );
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| 247 |
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| 248 |
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/* setup variables */
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| 249 |
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tpnt->can_queue =
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| 250 |
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(setup_can_queue > 0) ? setup_can_queue : CAN_QUEUE;
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| 251 |
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tpnt->cmd_per_lun =
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| 252 |
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(setup_cmd_per_lun > 0) ? setup_cmd_per_lun : CMD_PER_LUN;
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| 253 |
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tpnt->sg_tablesize =
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| 254 |
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(setup_sg_tablesize >= 0) ? setup_sg_tablesize : SG_TABLESIZE;
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| 255 |
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| 256 |
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if (setup_hostid >= 0)
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| 257 |
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tpnt->this_id = setup_hostid;
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| 258 |
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else {
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| 259 |
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/* use 7 as default */
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| 260 |
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tpnt->this_id = 7;
|
| 261 |
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}
|
| 262 |
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| 263 |
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#ifdef SUPPORT_TAGS
|
| 264 |
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if (setup_use_tagged_queuing < 0)
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| 265 |
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setup_use_tagged_queuing = USE_TAGGED_QUEUING;
|
| 266 |
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#endif
|
| 267 |
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|
| 268 |
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/* Once we support multiple 5380s (e.g. DuoDock) we'll do
|
| 269 |
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something different here */
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| 270 |
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instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
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| 271 |
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#if NDEBUG
|
| 272 |
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default_instance = instance;
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| 273 |
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#endif
|
| 274 |
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|
| 275 |
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if (macintosh_config->ident == MAC_MODEL_IIFX) {
|
| 276 |
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mac_scsi_regp = via1+0x8000;
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| 277 |
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mac_scsi_drq = via1+0xE000;
|
| 278 |
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mac_scsi_nodrq = via1+0xC000;
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| 279 |
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/* The IIFX should be able to do true DMA, but pseudo-dma doesn't work */
|
| 280 |
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flags = FLAG_NO_PSEUDO_DMA;
|
| 281 |
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} else {
|
| 282 |
|
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mac_scsi_regp = via1+0x10000;
|
| 283 |
|
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mac_scsi_drq = via1+0x6000;
|
| 284 |
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mac_scsi_nodrq = via1+0x12000;
|
| 285 |
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}
|
| 286 |
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|
| 287 |
|
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if (! setup_use_pdma)
|
| 288 |
|
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flags = FLAG_NO_PSEUDO_DMA;
|
| 289 |
|
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|
| 290 |
|
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instance->io_port = (unsigned long) mac_scsi_regp;
|
| 291 |
|
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instance->irq = IRQ_MAC_SCSI;
|
| 292 |
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|
| 293 |
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#ifdef RESET_BOOT
|
| 294 |
|
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mac_scsi_reset_boot(instance);
|
| 295 |
|
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#endif
|
| 296 |
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|
| 297 |
|
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NCR5380_init(instance, flags);
|
| 298 |
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|
| 299 |
|
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instance->n_io_port = 255;
|
| 300 |
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|
| 301 |
|
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((struct NCR5380_hostdata *)instance->hostdata)->ctrl = 0;
|
| 302 |
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|
| 303 |
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if (instance->irq != SCSI_IRQ_NONE)
|
| 304 |
|
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if (request_irq(instance->irq, NCR5380_intr, IRQ_FLG_SLOW,
|
| 305 |
|
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"ncr5380", NCR5380_intr)) {
|
| 306 |
|
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printk(KERN_WARNING "scsi%d: IRQ%d not free, interrupts disabled\n",
|
| 307 |
|
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instance->host_no, instance->irq);
|
| 308 |
|
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instance->irq = SCSI_IRQ_NONE;
|
| 309 |
|
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}
|
| 310 |
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|
| 311 |
|
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printk(KERN_INFO "scsi%d: generic 5380 at port %lX irq", instance->host_no, instance->io_port);
|
| 312 |
|
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if (instance->irq == SCSI_IRQ_NONE)
|
| 313 |
|
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printk (KERN_INFO "s disabled");
|
| 314 |
|
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else
|
| 315 |
|
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printk (KERN_INFO " %d", instance->irq);
|
| 316 |
|
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printk(KERN_INFO " options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
|
| 317 |
|
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instance->can_queue, instance->cmd_per_lun, MACSCSI_PUBLIC_RELEASE);
|
| 318 |
|
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printk(KERN_INFO "\nscsi%d:", instance->host_no);
|
| 319 |
|
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NCR5380_print_options(instance);
|
| 320 |
|
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printk("\n");
|
| 321 |
|
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called = 1;
|
| 322 |
|
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return 1;
|
| 323 |
|
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}
|
| 324 |
|
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|
| 325 |
|
|
int macscsi_release (struct Scsi_Host *shpnt)
|
| 326 |
|
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{
|
| 327 |
|
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if (shpnt->irq != SCSI_IRQ_NONE)
|
| 328 |
|
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free_irq (shpnt->irq, NCR5380_intr);
|
| 329 |
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|
| 330 |
|
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return 0;
|
| 331 |
|
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}
|
| 332 |
|
|
|
| 333 |
|
|
#ifdef RESET_BOOT
|
| 334 |
|
|
/*
|
| 335 |
|
|
* Our 'bus reset on boot' function
|
| 336 |
|
|
*/
|
| 337 |
|
|
|
| 338 |
|
|
static void mac_scsi_reset_boot(struct Scsi_Host *instance)
|
| 339 |
|
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{
|
| 340 |
|
|
unsigned long end;
|
| 341 |
|
|
|
| 342 |
|
|
NCR5380_local_declare();
|
| 343 |
|
|
NCR5380_setup(instance);
|
| 344 |
|
|
|
| 345 |
|
|
/*
|
| 346 |
|
|
* Do a SCSI reset to clean up the bus during initialization. No messing
|
| 347 |
|
|
* with the queues, interrupts, or locks necessary here.
|
| 348 |
|
|
*/
|
| 349 |
|
|
|
| 350 |
|
|
printk(KERN_INFO "Macintosh SCSI: resetting the SCSI bus..." );
|
| 351 |
|
|
|
| 352 |
|
|
/* switch off SCSI IRQ - catch an interrupt without IRQ bit set else */
|
| 353 |
|
|
mac_disable_irq(IRQ_MAC_SCSI);
|
| 354 |
|
|
|
| 355 |
|
|
/* get in phase */
|
| 356 |
|
|
NCR5380_write( TARGET_COMMAND_REG,
|
| 357 |
|
|
PHASE_SR_TO_TCR( NCR5380_read(STATUS_REG) ));
|
| 358 |
|
|
|
| 359 |
|
|
/* assert RST */
|
| 360 |
|
|
NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE | ICR_ASSERT_RST );
|
| 361 |
|
|
/* The min. reset hold time is 25us, so 40us should be enough */
|
| 362 |
|
|
udelay( 50 );
|
| 363 |
|
|
/* reset RST and interrupt */
|
| 364 |
|
|
NCR5380_write( INITIATOR_COMMAND_REG, ICR_BASE );
|
| 365 |
|
|
NCR5380_read( RESET_PARITY_INTERRUPT_REG );
|
| 366 |
|
|
|
| 367 |
|
|
for( end = jiffies + AFTER_RESET_DELAY; time_before(jiffies, end); )
|
| 368 |
|
|
barrier();
|
| 369 |
|
|
|
| 370 |
|
|
/* switch on SCSI IRQ again */
|
| 371 |
|
|
mac_enable_irq(IRQ_MAC_SCSI);
|
| 372 |
|
|
|
| 373 |
|
|
printk(KERN_INFO " done\n" );
|
| 374 |
|
|
}
|
| 375 |
|
|
#endif
|
| 376 |
|
|
|
| 377 |
|
|
const char * macscsi_info (struct Scsi_Host *spnt) {
|
| 378 |
|
|
return "";
|
| 379 |
|
|
}
|
| 380 |
|
|
|
| 381 |
|
|
/*
|
| 382 |
|
|
Pseudo-DMA: (Ove Edlund)
|
| 383 |
|
|
The code attempts to catch bus errors that occur if one for example
|
| 384 |
|
|
"trips over the cable".
|
| 385 |
|
|
XXX: Since bus errors in the PDMA routines never happen on my
|
| 386 |
|
|
computer, the bus error code is untested.
|
| 387 |
|
|
If the code works as intended, a bus error results in Pseudo-DMA
|
| 388 |
|
|
beeing disabled, meaning that the driver switches to slow handshake.
|
| 389 |
|
|
If bus errors are NOT extremely rare, this has to be changed.
|
| 390 |
|
|
*/
|
| 391 |
|
|
|
| 392 |
|
|
#define CP_IO_TO_MEM(s,d,len) \
|
| 393 |
|
|
__asm__ __volatile__ \
|
| 394 |
|
|
(" cmp.w #4,%2\n" \
|
| 395 |
|
|
" bls 8f\n" \
|
| 396 |
|
|
" move.w %1,%%d0\n" \
|
| 397 |
|
|
" neg.b %%d0\n" \
|
| 398 |
|
|
" and.w #3,%%d0\n" \
|
| 399 |
|
|
" sub.w %%d0,%2\n" \
|
| 400 |
|
|
" bra 2f\n" \
|
| 401 |
|
|
" 1: move.b (%0),(%1)+\n" \
|
| 402 |
|
|
" 2: dbf %%d0,1b\n" \
|
| 403 |
|
|
" move.w %2,%%d0\n" \
|
| 404 |
|
|
" lsr.w #5,%%d0\n" \
|
| 405 |
|
|
" bra 4f\n" \
|
| 406 |
|
|
" 3: move.l (%0),(%1)+\n" \
|
| 407 |
|
|
"31: move.l (%0),(%1)+\n" \
|
| 408 |
|
|
"32: move.l (%0),(%1)+\n" \
|
| 409 |
|
|
"33: move.l (%0),(%1)+\n" \
|
| 410 |
|
|
"34: move.l (%0),(%1)+\n" \
|
| 411 |
|
|
"35: move.l (%0),(%1)+\n" \
|
| 412 |
|
|
"36: move.l (%0),(%1)+\n" \
|
| 413 |
|
|
"37: move.l (%0),(%1)+\n" \
|
| 414 |
|
|
" 4: dbf %%d0,3b\n" \
|
| 415 |
|
|
" move.w %2,%%d0\n" \
|
| 416 |
|
|
" lsr.w #2,%%d0\n" \
|
| 417 |
|
|
" and.w #7,%%d0\n" \
|
| 418 |
|
|
" bra 6f\n" \
|
| 419 |
|
|
" 5: move.l (%0),(%1)+\n" \
|
| 420 |
|
|
" 6: dbf %%d0,5b\n" \
|
| 421 |
|
|
" and.w #3,%2\n" \
|
| 422 |
|
|
" bra 8f\n" \
|
| 423 |
|
|
" 7: move.b (%0),(%1)+\n" \
|
| 424 |
|
|
" 8: dbf %2,7b\n" \
|
| 425 |
|
|
" moveq.l #0, %2\n" \
|
| 426 |
|
|
" 9: \n" \
|
| 427 |
|
|
".section .fixup,\"ax\"\n" \
|
| 428 |
|
|
" .even\n" \
|
| 429 |
|
|
"90: moveq.l #1, %2\n" \
|
| 430 |
|
|
" jra 9b\n" \
|
| 431 |
|
|
".previous\n" \
|
| 432 |
|
|
".section __ex_table,\"a\"\n" \
|
| 433 |
|
|
" .align 4\n" \
|
| 434 |
|
|
" .long 1b,90b\n" \
|
| 435 |
|
|
" .long 3b,90b\n" \
|
| 436 |
|
|
" .long 31b,90b\n" \
|
| 437 |
|
|
" .long 32b,90b\n" \
|
| 438 |
|
|
" .long 33b,90b\n" \
|
| 439 |
|
|
" .long 34b,90b\n" \
|
| 440 |
|
|
" .long 35b,90b\n" \
|
| 441 |
|
|
" .long 36b,90b\n" \
|
| 442 |
|
|
" .long 37b,90b\n" \
|
| 443 |
|
|
" .long 5b,90b\n" \
|
| 444 |
|
|
" .long 7b,90b\n" \
|
| 445 |
|
|
".previous" \
|
| 446 |
|
|
: "=a"(s), "=a"(d), "=d"(len) \
|
| 447 |
|
|
: "0"(s), "1"(d), "2"(len) \
|
| 448 |
|
|
: "d0")
|
| 449 |
|
|
|
| 450 |
|
|
|
| 451 |
|
|
static int macscsi_pread (struct Scsi_Host *instance,
|
| 452 |
|
|
unsigned char *dst, int len)
|
| 453 |
|
|
{
|
| 454 |
|
|
unsigned char *d;
|
| 455 |
|
|
volatile unsigned char *s;
|
| 456 |
|
|
|
| 457 |
|
|
NCR5380_local_declare();
|
| 458 |
|
|
NCR5380_setup(instance);
|
| 459 |
|
|
|
| 460 |
|
|
s = mac_scsi_drq+0x60;
|
| 461 |
|
|
d = dst;
|
| 462 |
|
|
|
| 463 |
|
|
/* These conditions are derived from MacOS */
|
| 464 |
|
|
|
| 465 |
|
|
while (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)
|
| 466 |
|
|
&& !(NCR5380_read(STATUS_REG) & SR_REQ))
|
| 467 |
|
|
;
|
| 468 |
|
|
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)
|
| 469 |
|
|
&& (NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH)) {
|
| 470 |
|
|
printk(KERN_ERR "Error in macscsi_pread\n");
|
| 471 |
|
|
return -1;
|
| 472 |
|
|
}
|
| 473 |
|
|
|
| 474 |
|
|
CP_IO_TO_MEM(s, d, len);
|
| 475 |
|
|
|
| 476 |
|
|
if (len != 0) {
|
| 477 |
|
|
printk(KERN_NOTICE "Bus error in macscsi_pread\n");
|
| 478 |
|
|
return -1;
|
| 479 |
|
|
}
|
| 480 |
|
|
|
| 481 |
|
|
return 0;
|
| 482 |
|
|
}
|
| 483 |
|
|
|
| 484 |
|
|
|
| 485 |
|
|
#define CP_MEM_TO_IO(s,d,len) \
|
| 486 |
|
|
__asm__ __volatile__ \
|
| 487 |
|
|
(" cmp.w #4,%2\n" \
|
| 488 |
|
|
" bls 8f\n" \
|
| 489 |
|
|
" move.w %0,%%d0\n" \
|
| 490 |
|
|
" neg.b %%d0\n" \
|
| 491 |
|
|
" and.w #3,%%d0\n" \
|
| 492 |
|
|
" sub.w %%d0,%2\n" \
|
| 493 |
|
|
" bra 2f\n" \
|
| 494 |
|
|
" 1: move.b (%0)+,(%1)\n" \
|
| 495 |
|
|
" 2: dbf %%d0,1b\n" \
|
| 496 |
|
|
" move.w %2,%%d0\n" \
|
| 497 |
|
|
" lsr.w #5,%%d0\n" \
|
| 498 |
|
|
" bra 4f\n" \
|
| 499 |
|
|
" 3: move.l (%0)+,(%1)\n" \
|
| 500 |
|
|
"31: move.l (%0)+,(%1)\n" \
|
| 501 |
|
|
"32: move.l (%0)+,(%1)\n" \
|
| 502 |
|
|
"33: move.l (%0)+,(%1)\n" \
|
| 503 |
|
|
"34: move.l (%0)+,(%1)\n" \
|
| 504 |
|
|
"35: move.l (%0)+,(%1)\n" \
|
| 505 |
|
|
"36: move.l (%0)+,(%1)\n" \
|
| 506 |
|
|
"37: move.l (%0)+,(%1)\n" \
|
| 507 |
|
|
" 4: dbf %%d0,3b\n" \
|
| 508 |
|
|
" move.w %2,%%d0\n" \
|
| 509 |
|
|
" lsr.w #2,%%d0\n" \
|
| 510 |
|
|
" and.w #7,%%d0\n" \
|
| 511 |
|
|
" bra 6f\n" \
|
| 512 |
|
|
" 5: move.l (%0)+,(%1)\n" \
|
| 513 |
|
|
" 6: dbf %%d0,5b\n" \
|
| 514 |
|
|
" and.w #3,%2\n" \
|
| 515 |
|
|
" bra 8f\n" \
|
| 516 |
|
|
" 7: move.b (%0)+,(%1)\n" \
|
| 517 |
|
|
" 8: dbf %2,7b\n" \
|
| 518 |
|
|
" moveq.l #0, %2\n" \
|
| 519 |
|
|
" 9: \n" \
|
| 520 |
|
|
".section .fixup,\"ax\"\n" \
|
| 521 |
|
|
" .even\n" \
|
| 522 |
|
|
"90: moveq.l #1, %2\n" \
|
| 523 |
|
|
" jra 9b\n" \
|
| 524 |
|
|
".previous\n" \
|
| 525 |
|
|
".section __ex_table,\"a\"\n" \
|
| 526 |
|
|
" .align 4\n" \
|
| 527 |
|
|
" .long 1b,90b\n" \
|
| 528 |
|
|
" .long 3b,90b\n" \
|
| 529 |
|
|
" .long 31b,90b\n" \
|
| 530 |
|
|
" .long 32b,90b\n" \
|
| 531 |
|
|
" .long 33b,90b\n" \
|
| 532 |
|
|
" .long 34b,90b\n" \
|
| 533 |
|
|
" .long 35b,90b\n" \
|
| 534 |
|
|
" .long 36b,90b\n" \
|
| 535 |
|
|
" .long 37b,90b\n" \
|
| 536 |
|
|
" .long 5b,90b\n" \
|
| 537 |
|
|
" .long 7b,90b\n" \
|
| 538 |
|
|
".previous" \
|
| 539 |
|
|
: "=a"(s), "=a"(d), "=d"(len) \
|
| 540 |
|
|
: "0"(s), "1"(d), "2"(len) \
|
| 541 |
|
|
: "d0")
|
| 542 |
|
|
|
| 543 |
|
|
static int macscsi_pwrite (struct Scsi_Host *instance,
|
| 544 |
|
|
unsigned char *src, int len)
|
| 545 |
|
|
{
|
| 546 |
|
|
unsigned char *s;
|
| 547 |
|
|
volatile unsigned char *d;
|
| 548 |
|
|
|
| 549 |
|
|
NCR5380_local_declare();
|
| 550 |
|
|
NCR5380_setup(instance);
|
| 551 |
|
|
|
| 552 |
|
|
s = src;
|
| 553 |
|
|
d = mac_scsi_drq;
|
| 554 |
|
|
|
| 555 |
|
|
/* These conditions are derived from MacOS */
|
| 556 |
|
|
|
| 557 |
|
|
while (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)
|
| 558 |
|
|
&& (!(NCR5380_read(STATUS_REG) & SR_REQ)
|
| 559 |
|
|
|| (NCR5380_read(BUS_AND_STATUS_REG) & BASR_PHASE_MATCH)))
|
| 560 |
|
|
;
|
| 561 |
|
|
if (!(NCR5380_read(BUS_AND_STATUS_REG) & BASR_DRQ)) {
|
| 562 |
|
|
printk(KERN_ERR "Error in macscsi_pwrite\n");
|
| 563 |
|
|
return -1;
|
| 564 |
|
|
}
|
| 565 |
|
|
|
| 566 |
|
|
CP_MEM_TO_IO(s, d, len);
|
| 567 |
|
|
|
| 568 |
|
|
if (len != 0) {
|
| 569 |
|
|
printk(KERN_NOTICE "Bus error in macscsi_pwrite\n");
|
| 570 |
|
|
return -1;
|
| 571 |
|
|
}
|
| 572 |
|
|
|
| 573 |
|
|
return 0;
|
| 574 |
|
|
}
|
| 575 |
|
|
|
| 576 |
|
|
|
| 577 |
|
|
/* These control the behaviour of the generic 5380 core */
|
| 578 |
|
|
#define AUTOSENSE
|
| 579 |
|
|
#define PSEUDO_DMA
|
| 580 |
|
|
|
| 581 |
|
|
#include "NCR5380.c"
|
| 582 |
|
|
|
| 583 |
|
|
static Scsi_Host_Template driver_template = MAC_NCR5380;
|
| 584 |
|
|
|
| 585 |
|
|
#include "scsi_module.c"
|
