358 lines
8.2 KiB
C
358 lines
8.2 KiB
C
/*
|
|
* Generic Generic NCR5380 driver
|
|
*
|
|
* Copyright 1995-2002, Russell King
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/signal.h>
|
|
#include <linux/sched.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/delay.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/ecard.h>
|
|
#include <asm/io.h>
|
|
#include <asm/irq.h>
|
|
#include <asm/system.h>
|
|
|
|
#include "../scsi.h"
|
|
#include <scsi/scsi_host.h>
|
|
|
|
#include <scsi/scsicam.h>
|
|
|
|
#define AUTOSENSE
|
|
#define PSEUDO_DMA
|
|
|
|
#define CUMANASCSI_PUBLIC_RELEASE 1
|
|
|
|
#define NCR5380_implementation_fields int port, ctrl
|
|
#define NCR5380_local_declare() struct Scsi_Host *_instance
|
|
#define NCR5380_setup(instance) _instance = instance
|
|
#define NCR5380_read(reg) cumanascsi_read(_instance, reg)
|
|
#define NCR5380_write(reg, value) cumanascsi_write(_instance, reg, value)
|
|
#define NCR5380_intr cumanascsi_intr
|
|
#define NCR5380_queue_command cumanascsi_queue_command
|
|
#define NCR5380_proc_info cumanascsi_proc_info
|
|
|
|
#define BOARD_NORMAL 0
|
|
#define BOARD_NCR53C400 1
|
|
|
|
#include "../NCR5380.h"
|
|
|
|
void cumanascsi_setup(char *str, int *ints)
|
|
{
|
|
}
|
|
|
|
const char *cumanascsi_info(struct Scsi_Host *spnt)
|
|
{
|
|
return "";
|
|
}
|
|
|
|
#ifdef NOT_EFFICIENT
|
|
#define CTRL(p,v) outb(*ctrl = (v), (p) - 577)
|
|
#define STAT(p) inb((p)+1)
|
|
#define IN(p) inb((p))
|
|
#define OUT(v,p) outb((v), (p))
|
|
#else
|
|
#define CTRL(p,v) (p[-2308] = (*ctrl = (v)))
|
|
#define STAT(p) (p[4])
|
|
#define IN(p) (*(p))
|
|
#define IN2(p) ((unsigned short)(*(volatile unsigned long *)(p)))
|
|
#define OUT(v,p) (*(p) = (v))
|
|
#define OUT2(v,p) (*((volatile unsigned long *)(p)) = (v))
|
|
#endif
|
|
#define L(v) (((v)<<16)|((v) & 0x0000ffff))
|
|
#define H(v) (((v)>>16)|((v) & 0xffff0000))
|
|
|
|
static inline int
|
|
NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr, int len)
|
|
{
|
|
int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
|
|
int oldctrl = *ctrl;
|
|
unsigned long *laddr;
|
|
#ifdef NOT_EFFICIENT
|
|
int iobase = instance->io_port;
|
|
int dma_io = iobase & ~(0x3C0000>>2);
|
|
#else
|
|
volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
|
|
volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
|
|
#endif
|
|
|
|
if(!len) return 0;
|
|
|
|
CTRL(iobase, 0x02);
|
|
laddr = (unsigned long *)addr;
|
|
while(len >= 32)
|
|
{
|
|
int status;
|
|
unsigned long v;
|
|
status = STAT(iobase);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(!(status & 0x40))
|
|
continue;
|
|
v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
|
|
v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
|
|
v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
|
|
v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
|
|
v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
|
|
v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
|
|
v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
|
|
v=*laddr++; OUT2(L(v),dma_io); OUT2(H(v),dma_io);
|
|
len -= 32;
|
|
if(len == 0)
|
|
break;
|
|
}
|
|
|
|
addr = (unsigned char *)laddr;
|
|
CTRL(iobase, 0x12);
|
|
while(len > 0)
|
|
{
|
|
int status;
|
|
status = STAT(iobase);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(status & 0x40)
|
|
{
|
|
OUT(*addr++, dma_io);
|
|
if(--len == 0)
|
|
break;
|
|
}
|
|
|
|
status = STAT(iobase);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(status & 0x40)
|
|
{
|
|
OUT(*addr++, dma_io);
|
|
if(--len == 0)
|
|
break;
|
|
}
|
|
}
|
|
end:
|
|
CTRL(iobase, oldctrl|0x40);
|
|
return len;
|
|
}
|
|
|
|
static inline int
|
|
NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr, int len)
|
|
{
|
|
int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
|
|
int oldctrl = *ctrl;
|
|
unsigned long *laddr;
|
|
#ifdef NOT_EFFICIENT
|
|
int iobase = instance->io_port;
|
|
int dma_io = iobase & ~(0x3C0000>>2);
|
|
#else
|
|
volatile unsigned char *iobase = (unsigned char *)ioaddr(instance->io_port);
|
|
volatile unsigned char *dma_io = (unsigned char *)((int)iobase & ~0x3C0000);
|
|
#endif
|
|
|
|
if(!len) return 0;
|
|
|
|
CTRL(iobase, 0x00);
|
|
laddr = (unsigned long *)addr;
|
|
while(len >= 32)
|
|
{
|
|
int status;
|
|
status = STAT(iobase);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(!(status & 0x40))
|
|
continue;
|
|
*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
|
|
*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
|
|
*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
|
|
*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
|
|
*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
|
|
*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
|
|
*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
|
|
*laddr++ = IN2(dma_io)|(IN2(dma_io)<<16);
|
|
len -= 32;
|
|
if(len == 0)
|
|
break;
|
|
}
|
|
|
|
addr = (unsigned char *)laddr;
|
|
CTRL(iobase, 0x10);
|
|
while(len > 0)
|
|
{
|
|
int status;
|
|
status = STAT(iobase);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(status & 0x40)
|
|
{
|
|
*addr++ = IN(dma_io);
|
|
if(--len == 0)
|
|
break;
|
|
}
|
|
|
|
status = STAT(iobase);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(status & 0x40)
|
|
{
|
|
*addr++ = IN(dma_io);
|
|
if(--len == 0)
|
|
break;
|
|
}
|
|
}
|
|
end:
|
|
CTRL(iobase, oldctrl|0x40);
|
|
return len;
|
|
}
|
|
|
|
#undef STAT
|
|
#undef CTRL
|
|
#undef IN
|
|
#undef OUT
|
|
|
|
#define CTRL(p,v) outb(*ctrl = (v), (p) - 577)
|
|
|
|
static char cumanascsi_read(struct Scsi_Host *instance, int reg)
|
|
{
|
|
unsigned int iobase = instance->io_port;
|
|
int i;
|
|
int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
|
|
|
|
CTRL(iobase, 0);
|
|
i = inb(iobase + 64 + reg);
|
|
CTRL(iobase, 0x40);
|
|
|
|
return i;
|
|
}
|
|
|
|
static void cumanascsi_write(struct Scsi_Host *instance, int reg, int value)
|
|
{
|
|
int iobase = instance->io_port;
|
|
int *ctrl = &((struct NCR5380_hostdata *)instance->hostdata)->ctrl;
|
|
|
|
CTRL(iobase, 0);
|
|
outb(value, iobase + 64 + reg);
|
|
CTRL(iobase, 0x40);
|
|
}
|
|
|
|
#undef CTRL
|
|
|
|
#include "../NCR5380.c"
|
|
|
|
static Scsi_Host_Template cumanascsi_template = {
|
|
.module = THIS_MODULE,
|
|
.name = "Cumana 16-bit SCSI",
|
|
.info = cumanascsi_info,
|
|
.queuecommand = cumanascsi_queue_command,
|
|
.eh_abort_handler = NCR5380_abort,
|
|
.eh_device_reset_handler= NCR5380_device_reset,
|
|
.eh_bus_reset_handler = NCR5380_bus_reset,
|
|
.eh_host_reset_handler = NCR5380_host_reset,
|
|
.can_queue = 16,
|
|
.this_id = 7,
|
|
.sg_tablesize = SG_ALL,
|
|
.cmd_per_lun = 2,
|
|
.unchecked_isa_dma = 0,
|
|
.use_clustering = DISABLE_CLUSTERING,
|
|
.proc_name = "CumanaSCSI-1",
|
|
};
|
|
|
|
static int __devinit
|
|
cumanascsi1_probe(struct expansion_card *ec, const struct ecard_id *id)
|
|
{
|
|
struct Scsi_Host *host;
|
|
int ret = -ENOMEM;
|
|
|
|
host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
|
|
if (!host)
|
|
goto out;
|
|
|
|
host->io_port = ecard_address(ec, ECARD_IOC, ECARD_SLOW) + 0x800;
|
|
host->irq = ec->irq;
|
|
|
|
NCR5380_init(host, 0);
|
|
|
|
host->n_io_port = 255;
|
|
if (!(request_region(host->io_port, host->n_io_port, "CumanaSCSI-1"))) {
|
|
ret = -EBUSY;
|
|
goto out_free;
|
|
}
|
|
|
|
((struct NCR5380_hostdata *)host->hostdata)->ctrl = 0;
|
|
outb(0x00, host->io_port - 577);
|
|
|
|
ret = request_irq(host->irq, cumanascsi_intr, SA_INTERRUPT,
|
|
"CumanaSCSI-1", host);
|
|
if (ret) {
|
|
printk("scsi%d: IRQ%d not free: %d\n",
|
|
host->host_no, host->irq, ret);
|
|
goto out_release;
|
|
}
|
|
|
|
printk("scsi%d: at port 0x%08lx irq %d",
|
|
host->host_no, host->io_port, host->irq);
|
|
printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
|
|
host->can_queue, host->cmd_per_lun, CUMANASCSI_PUBLIC_RELEASE);
|
|
printk("\nscsi%d:", host->host_no);
|
|
NCR5380_print_options(host);
|
|
printk("\n");
|
|
|
|
ret = scsi_add_host(host, &ec->dev);
|
|
if (ret)
|
|
goto out_free_irq;
|
|
|
|
scsi_scan_host(host);
|
|
goto out;
|
|
|
|
out_free_irq:
|
|
free_irq(host->irq, host);
|
|
out_release:
|
|
release_region(host->io_port, host->n_io_port);
|
|
out_free:
|
|
scsi_host_put(host);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void __devexit cumanascsi1_remove(struct expansion_card *ec)
|
|
{
|
|
struct Scsi_Host *host = ecard_get_drvdata(ec);
|
|
|
|
ecard_set_drvdata(ec, NULL);
|
|
|
|
scsi_remove_host(host);
|
|
free_irq(host->irq, host);
|
|
NCR5380_exit(host);
|
|
release_region(host->io_port, host->n_io_port);
|
|
scsi_host_put(host);
|
|
}
|
|
|
|
static const struct ecard_id cumanascsi1_cids[] = {
|
|
{ MANU_CUMANA, PROD_CUMANA_SCSI_1 },
|
|
{ 0xffff, 0xffff }
|
|
};
|
|
|
|
static struct ecard_driver cumanascsi1_driver = {
|
|
.probe = cumanascsi1_probe,
|
|
.remove = __devexit_p(cumanascsi1_remove),
|
|
.id_table = cumanascsi1_cids,
|
|
.drv = {
|
|
.name = "cumanascsi1",
|
|
},
|
|
};
|
|
|
|
static int __init cumanascsi_init(void)
|
|
{
|
|
return ecard_register_driver(&cumanascsi1_driver);
|
|
}
|
|
|
|
static void __exit cumanascsi_exit(void)
|
|
{
|
|
ecard_remove_driver(&cumanascsi1_driver);
|
|
}
|
|
|
|
module_init(cumanascsi_init);
|
|
module_exit(cumanascsi_exit);
|
|
|
|
MODULE_DESCRIPTION("Cumana SCSI-1 driver for Acorn machines");
|
|
MODULE_LICENSE("GPL");
|