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#define AUTOSENSE
/* #define PSEUDO_DMA */
/*
* EcoSCSI Generic NCR5380 driver
*
* Copyright 1995, Russell King
*
* ALPHA RELEASE 1.
*
* For more information, please consult
*
* NCR 5380 Family
* SCSI Protocol Controller
* Databook
*
* NCR Microelectronics
* 1635 Aeroplaza Drive
* Colorado Springs, CO 80916
* 1+ (719) 578-3400
* 1+ (800) 334-5454
*/
#include <linux/module.h>
#include <linux/signal.h>
#include <linux/ioport.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/blkdev.h>
#include <asm/io.h>
#include <asm/system.h>
#include "../scsi.h"
#include <scsi/scsi_host.h>
#define priv(host) ((struct NCR5380_hostdata *)(host)->hostdata)
#define NCR5380_local_declare() void __iomem *_base
#define NCR5380_setup(host) _base = priv(host)->base
#define NCR5380_read(reg) ({ writeb(reg | 8, _base); readb(_base + 4); })
#define NCR5380_write(reg, value) ({ writeb(reg | 8, _base); writeb(value, _base + 4); })
#define NCR5380_intr ecoscsi_intr
#define NCR5380_queue_command ecoscsi_queue_command
#define NCR5380_proc_info ecoscsi_proc_info
#define NCR5380_implementation_fields \
void __iomem *base
#include "../NCR5380.h"
#define ECOSCSI_PUBLIC_RELEASE 1
/*
* Function : ecoscsi_setup(char *str, int *ints)
*
* Purpose : LILO command line initialization of the overrides array,
*
* Inputs : str - unused, ints - array of integer parameters with ints[0]
* equal to the number of ints.
*
*/
void ecoscsi_setup(char *str, int *ints)
{
}
const char * ecoscsi_info (struct Scsi_Host *spnt)
{
return "";
}
#define BOARD_NORMAL 0
#define BOARD_NCR53C400 1
#include "../NCR5380.c"
static struct scsi_host_template ecoscsi_template = {
.module = THIS_MODULE,
.name = "Serial Port EcoSCSI NCR5380",
.proc_name = "ecoscsi",
.info = ecoscsi_info,
.queuecommand = ecoscsi_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
};
static struct Scsi_Host *host;
static int __init ecoscsi_init(void)
{
void __iomem *_base;
int ret;
if (!request_mem_region(0x33a0000, 4096, "ecoscsi")) {
ret = -EBUSY;
goto out;
}
_base = ioremap(0x33a0000, 4096);
if (!_base) {
ret = -ENOMEM;
goto out_release;
}
NCR5380_write(MODE_REG, 0x20); /* Is it really SCSI? */
if (NCR5380_read(MODE_REG) != 0x20) /* Write to a reg. */
goto out_unmap;
NCR5380_write(MODE_REG, 0x00); /* it back. */
if (NCR5380_read(MODE_REG) != 0x00)
goto out_unmap;
host = scsi_host_alloc(tpnt, sizeof(struct NCR5380_hostdata));
if (!host) {
ret = -ENOMEM;
goto out_unmap;
}
priv(host)->base = _base;
host->irq = IRQ_NONE;
NCR5380_init(host, 0);
printk("scsi%d: at port 0x%08lx irqs disabled", host->host_no, host->io_port);
printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
host->can_queue, host->cmd_per_lun, ECOSCSI_PUBLIC_RELEASE);
printk("\nscsi%d:", host->host_no);
NCR5380_print_options(host);
printk("\n");
scsi_add_host(host, NULL); /* XXX handle failure */
scsi_scan_host(host);
return 0;
out_unmap:
iounmap(_base);
out_release:
release_mem_region(0x33a0000, 4096);
out:
return ret;
}
static void __exit ecoscsi_exit(void)
{
scsi_remove_host(host);
NCR5380_exit(host);
scsi_host_put(host);
release_mem_region(0x33a0000, 4096);
return 0;
}
module_init(ecoscsi_init);
module_exit(ecoscsi_exit);
MODULE_AUTHOR("Russell King");
MODULE_DESCRIPTION("Econet-SCSI driver for Acorn machines");
MODULE_LICENSE("GPL");
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