mirror of
https://mirrors.bfsu.edu.cn/git/linux.git
synced 2024-12-15 23:14:31 +08:00
141 lines
3.5 KiB
C
141 lines
3.5 KiB
C
/*
|
|
* Detection routine for the NCR53c710 based Amiga SCSI Controllers for Linux.
|
|
* Amiga MacroSystemUS WarpEngine SCSI controller.
|
|
* Amiga Technologies A4000T SCSI controller.
|
|
* Amiga Technologies/DKB A4091 SCSI controller.
|
|
*
|
|
* Written 1997 by Alan Hourihane <alanh@fairlite.demon.co.uk>
|
|
* plus modifications of the 53c7xx.c driver to support the Amiga.
|
|
*/
|
|
#include <linux/types.h>
|
|
#include <linux/mm.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/config.h>
|
|
#include <linux/zorro.h>
|
|
#include <linux/stat.h>
|
|
|
|
#include <asm/setup.h>
|
|
#include <asm/page.h>
|
|
#include <asm/pgtable.h>
|
|
#include <asm/amigaints.h>
|
|
#include <asm/amigahw.h>
|
|
#include <asm/dma.h>
|
|
#include <asm/irq.h>
|
|
|
|
#include "scsi.h"
|
|
#include <scsi/scsi_host.h>
|
|
#include "53c7xx.h"
|
|
#include "amiga7xx.h"
|
|
|
|
|
|
static int amiga7xx_register_one(struct scsi_host_template *tpnt,
|
|
unsigned long address)
|
|
{
|
|
long long options;
|
|
int clock;
|
|
|
|
if (!request_mem_region(address, 0x1000, "ncr53c710"))
|
|
return 0;
|
|
|
|
address = (unsigned long)z_ioremap(address, 0x1000);
|
|
options = OPTION_MEMORY_MAPPED | OPTION_DEBUG_TEST1 | OPTION_INTFLY |
|
|
OPTION_SYNCHRONOUS | OPTION_ALWAYS_SYNCHRONOUS |
|
|
OPTION_DISCONNECT;
|
|
clock = 50000000; /* 50 MHz SCSI Clock */
|
|
ncr53c7xx_init(tpnt, 0, 710, address, 0, IRQ_AMIGA_PORTS, DMA_NONE,
|
|
options, clock);
|
|
return 1;
|
|
}
|
|
|
|
|
|
#ifdef CONFIG_ZORRO
|
|
|
|
static struct {
|
|
zorro_id id;
|
|
unsigned long offset;
|
|
int absolute; /* offset is absolute address */
|
|
} amiga7xx_table[] = {
|
|
{ .id = ZORRO_PROD_PHASE5_BLIZZARD_603E_PLUS, .offset = 0xf40000,
|
|
.absolute = 1 },
|
|
{ .id = ZORRO_PROD_MACROSYSTEMS_WARP_ENGINE_40xx, .offset = 0x40000 },
|
|
{ .id = ZORRO_PROD_CBM_A4091_1, .offset = 0x800000 },
|
|
{ .id = ZORRO_PROD_CBM_A4091_2, .offset = 0x800000 },
|
|
{ .id = ZORRO_PROD_GVP_GFORCE_040_060, .offset = 0x40000 },
|
|
{ 0 }
|
|
};
|
|
|
|
static int __init amiga7xx_zorro_detect(struct scsi_host_template *tpnt)
|
|
{
|
|
int num = 0, i;
|
|
struct zorro_dev *z = NULL;
|
|
unsigned long address;
|
|
|
|
while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
|
|
for (i = 0; amiga7xx_table[i].id; i++)
|
|
if (z->id == amiga7xx_table[i].id)
|
|
break;
|
|
if (!amiga7xx_table[i].id)
|
|
continue;
|
|
if (amiga7xx_table[i].absolute)
|
|
address = amiga7xx_table[i].offset;
|
|
else
|
|
address = z->resource.start + amiga7xx_table[i].offset;
|
|
num += amiga7xx_register_one(tpnt, address);
|
|
}
|
|
return num;
|
|
}
|
|
|
|
#endif /* CONFIG_ZORRO */
|
|
|
|
|
|
int __init amiga7xx_detect(struct scsi_host_template *tpnt)
|
|
{
|
|
static unsigned char called = 0;
|
|
int num = 0;
|
|
|
|
if (called || !MACH_IS_AMIGA)
|
|
return 0;
|
|
|
|
tpnt->proc_name = "Amiga7xx";
|
|
|
|
if (AMIGAHW_PRESENT(A4000_SCSI))
|
|
num += amiga7xx_register_one(tpnt, 0xdd0040);
|
|
|
|
#ifdef CONFIG_ZORRO
|
|
num += amiga7xx_zorro_detect(tpnt);
|
|
#endif
|
|
|
|
called = 1;
|
|
return num;
|
|
}
|
|
|
|
static int amiga7xx_release(struct Scsi_Host *shost)
|
|
{
|
|
if (shost->irq)
|
|
free_irq(shost->irq, NULL);
|
|
if (shost->dma_channel != 0xff)
|
|
free_dma(shost->dma_channel);
|
|
if (shost->io_port && shost->n_io_port)
|
|
release_region(shost->io_port, shost->n_io_port);
|
|
scsi_unregister(shost);
|
|
return 0;
|
|
}
|
|
|
|
static struct scsi_host_template driver_template = {
|
|
.name = "Amiga NCR53c710 SCSI",
|
|
.detect = amiga7xx_detect,
|
|
.release = amiga7xx_release,
|
|
.queuecommand = NCR53c7xx_queue_command,
|
|
.abort = NCR53c7xx_abort,
|
|
.reset = NCR53c7xx_reset,
|
|
.can_queue = 24,
|
|
.this_id = 7,
|
|
.sg_tablesize = 63,
|
|
.cmd_per_lun = 3,
|
|
.use_clustering = DISABLE_CLUSTERING
|
|
};
|
|
|
|
|
|
#include "scsi_module.c"
|