331 lines
7.4 KiB
C
331 lines
7.4 KiB
C
/*
|
|
* Generic Generic NCR5380 driver
|
|
*
|
|
* Copyright 1995-2002, Russell King
|
|
*/
|
|
#include <linux/module.h>
|
|
#include <linux/ioport.h>
|
|
#include <linux/blkdev.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/ecard.h>
|
|
#include <asm/io.h>
|
|
|
|
#include <scsi/scsi_host.h>
|
|
|
|
#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
|
|
#define NCR5380_read(reg) cumanascsi_read(instance, reg)
|
|
#define NCR5380_write(reg, value) cumanascsi_write(instance, reg, value)
|
|
|
|
#define NCR5380_dma_xfer_len(instance, cmd, phase) (cmd->transfersize)
|
|
#define NCR5380_dma_recv_setup cumanascsi_pread
|
|
#define NCR5380_dma_send_setup cumanascsi_pwrite
|
|
#define NCR5380_dma_residual(instance) (0)
|
|
|
|
#define NCR5380_intr cumanascsi_intr
|
|
#define NCR5380_queue_command cumanascsi_queue_command
|
|
#define NCR5380_info cumanascsi_info
|
|
|
|
#define NCR5380_implementation_fields \
|
|
unsigned ctrl; \
|
|
void __iomem *base; \
|
|
void __iomem *dma
|
|
|
|
#include "../NCR5380.h"
|
|
|
|
void cumanascsi_setup(char *str, int *ints)
|
|
{
|
|
}
|
|
|
|
#define CTRL 0x16fc
|
|
#define STAT 0x2004
|
|
#define L(v) (((v)<<16)|((v) & 0x0000ffff))
|
|
#define H(v) (((v)>>16)|((v) & 0xffff0000))
|
|
|
|
static inline int cumanascsi_pwrite(struct Scsi_Host *host,
|
|
unsigned char *addr, int len)
|
|
{
|
|
unsigned long *laddr;
|
|
void __iomem *dma = priv(host)->dma + 0x2000;
|
|
|
|
if(!len) return 0;
|
|
|
|
writeb(0x02, priv(host)->base + CTRL);
|
|
laddr = (unsigned long *)addr;
|
|
while(len >= 32)
|
|
{
|
|
unsigned int status;
|
|
unsigned long v;
|
|
status = readb(priv(host)->base + STAT);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(!(status & 0x40))
|
|
continue;
|
|
v=*laddr++; writew(L(v), dma); writew(H(v), dma);
|
|
v=*laddr++; writew(L(v), dma); writew(H(v), dma);
|
|
v=*laddr++; writew(L(v), dma); writew(H(v), dma);
|
|
v=*laddr++; writew(L(v), dma); writew(H(v), dma);
|
|
v=*laddr++; writew(L(v), dma); writew(H(v), dma);
|
|
v=*laddr++; writew(L(v), dma); writew(H(v), dma);
|
|
v=*laddr++; writew(L(v), dma); writew(H(v), dma);
|
|
v=*laddr++; writew(L(v), dma); writew(H(v), dma);
|
|
len -= 32;
|
|
if(len == 0)
|
|
break;
|
|
}
|
|
|
|
addr = (unsigned char *)laddr;
|
|
writeb(0x12, priv(host)->base + CTRL);
|
|
|
|
while(len > 0)
|
|
{
|
|
unsigned int status;
|
|
status = readb(priv(host)->base + STAT);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(status & 0x40)
|
|
{
|
|
writeb(*addr++, dma);
|
|
if(--len == 0)
|
|
break;
|
|
}
|
|
|
|
status = readb(priv(host)->base + STAT);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(status & 0x40)
|
|
{
|
|
writeb(*addr++, dma);
|
|
if(--len == 0)
|
|
break;
|
|
}
|
|
}
|
|
end:
|
|
writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
|
|
|
|
if (len)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static inline int cumanascsi_pread(struct Scsi_Host *host,
|
|
unsigned char *addr, int len)
|
|
{
|
|
unsigned long *laddr;
|
|
void __iomem *dma = priv(host)->dma + 0x2000;
|
|
|
|
if(!len) return 0;
|
|
|
|
writeb(0x00, priv(host)->base + CTRL);
|
|
laddr = (unsigned long *)addr;
|
|
while(len >= 32)
|
|
{
|
|
unsigned int status;
|
|
status = readb(priv(host)->base + STAT);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(!(status & 0x40))
|
|
continue;
|
|
*laddr++ = readw(dma) | (readw(dma) << 16);
|
|
*laddr++ = readw(dma) | (readw(dma) << 16);
|
|
*laddr++ = readw(dma) | (readw(dma) << 16);
|
|
*laddr++ = readw(dma) | (readw(dma) << 16);
|
|
*laddr++ = readw(dma) | (readw(dma) << 16);
|
|
*laddr++ = readw(dma) | (readw(dma) << 16);
|
|
*laddr++ = readw(dma) | (readw(dma) << 16);
|
|
*laddr++ = readw(dma) | (readw(dma) << 16);
|
|
len -= 32;
|
|
if(len == 0)
|
|
break;
|
|
}
|
|
|
|
addr = (unsigned char *)laddr;
|
|
writeb(0x10, priv(host)->base + CTRL);
|
|
|
|
while(len > 0)
|
|
{
|
|
unsigned int status;
|
|
status = readb(priv(host)->base + STAT);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(status & 0x40)
|
|
{
|
|
*addr++ = readb(dma);
|
|
if(--len == 0)
|
|
break;
|
|
}
|
|
|
|
status = readb(priv(host)->base + STAT);
|
|
if(status & 0x80)
|
|
goto end;
|
|
if(status & 0x40)
|
|
{
|
|
*addr++ = readb(dma);
|
|
if(--len == 0)
|
|
break;
|
|
}
|
|
}
|
|
end:
|
|
writeb(priv(host)->ctrl | 0x40, priv(host)->base + CTRL);
|
|
|
|
if (len)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
static unsigned char cumanascsi_read(struct Scsi_Host *host, unsigned int reg)
|
|
{
|
|
void __iomem *base = priv(host)->base;
|
|
unsigned char val;
|
|
|
|
writeb(0, base + CTRL);
|
|
|
|
val = readb(base + 0x2100 + (reg << 2));
|
|
|
|
priv(host)->ctrl = 0x40;
|
|
writeb(0x40, base + CTRL);
|
|
|
|
return val;
|
|
}
|
|
|
|
static void cumanascsi_write(struct Scsi_Host *host, unsigned int reg, unsigned int value)
|
|
{
|
|
void __iomem *base = priv(host)->base;
|
|
|
|
writeb(0, base + CTRL);
|
|
|
|
writeb(value, base + 0x2100 + (reg << 2));
|
|
|
|
priv(host)->ctrl = 0x40;
|
|
writeb(0x40, base + CTRL);
|
|
}
|
|
|
|
#include "../NCR5380.c"
|
|
|
|
static struct 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_bus_reset_handler = NCR5380_bus_reset,
|
|
.can_queue = 16,
|
|
.this_id = 7,
|
|
.sg_tablesize = SG_ALL,
|
|
.cmd_per_lun = 2,
|
|
.use_clustering = DISABLE_CLUSTERING,
|
|
.proc_name = "CumanaSCSI-1",
|
|
.cmd_size = NCR5380_CMD_SIZE,
|
|
.max_sectors = 128,
|
|
};
|
|
|
|
static int cumanascsi1_probe(struct expansion_card *ec,
|
|
const struct ecard_id *id)
|
|
{
|
|
struct Scsi_Host *host;
|
|
int ret;
|
|
|
|
ret = ecard_request_resources(ec);
|
|
if (ret)
|
|
goto out;
|
|
|
|
host = scsi_host_alloc(&cumanascsi_template, sizeof(struct NCR5380_hostdata));
|
|
if (!host) {
|
|
ret = -ENOMEM;
|
|
goto out_release;
|
|
}
|
|
|
|
priv(host)->base = ioremap(ecard_resource_start(ec, ECARD_RES_IOCSLOW),
|
|
ecard_resource_len(ec, ECARD_RES_IOCSLOW));
|
|
priv(host)->dma = ioremap(ecard_resource_start(ec, ECARD_RES_MEMC),
|
|
ecard_resource_len(ec, ECARD_RES_MEMC));
|
|
if (!priv(host)->base || !priv(host)->dma) {
|
|
ret = -ENOMEM;
|
|
goto out_unmap;
|
|
}
|
|
|
|
host->irq = ec->irq;
|
|
|
|
ret = NCR5380_init(host, FLAG_DMA_FIXUP | FLAG_LATE_DMA_SETUP);
|
|
if (ret)
|
|
goto out_unmap;
|
|
|
|
NCR5380_maybe_reset_bus(host);
|
|
|
|
priv(host)->ctrl = 0;
|
|
writeb(0, priv(host)->base + CTRL);
|
|
|
|
ret = request_irq(host->irq, cumanascsi_intr, 0,
|
|
"CumanaSCSI-1", host);
|
|
if (ret) {
|
|
printk("scsi%d: IRQ%d not free: %d\n",
|
|
host->host_no, host->irq, ret);
|
|
goto out_exit;
|
|
}
|
|
|
|
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_exit:
|
|
NCR5380_exit(host);
|
|
out_unmap:
|
|
iounmap(priv(host)->base);
|
|
iounmap(priv(host)->dma);
|
|
scsi_host_put(host);
|
|
out_release:
|
|
ecard_release_resources(ec);
|
|
out:
|
|
return ret;
|
|
}
|
|
|
|
static void 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);
|
|
iounmap(priv(host)->base);
|
|
iounmap(priv(host)->dma);
|
|
scsi_host_put(host);
|
|
ecard_release_resources(ec);
|
|
}
|
|
|
|
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 = 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");
|