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linux/drivers/scsi/arm/cumana_1.c
Jeff Garzik 3471c28803 [SCSI] Remove no-op implementations of SCSI EH hooks 
Drivers need not implement a hook that returns FAILED, and does nothing
else, since the SCSI midlayer code will do that for us.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
2005-06-17 12:04:45 -05:00

356 lines
8.2 KiB
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/*
* 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_bus_reset_handler = NCR5380_bus_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");
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