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#define AUTOSENSE
/*#define PSEUDO_DMA*/
/*
* Oak 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
*/
/*
* Options :
*
* PARITY - enable parity checking. Not supported.
*
* SCSI2 - enable support for SCSI-II tagged queueing. Untested.
*
* USLEEP - enable support for devices that don't disconnect. Untested.
*/
/*
* $Log: oak.c,v $
* Revision 1.3 1998/05/03 20:45:37 alan
* ARM SCSI update. This adds the eesox driver and massively updates the
* Cumana driver. The folks who bought cumana arent anal retentive all
* docs are secret weenies so now there are docs ..
*
* Revision 1.2 1998/03/08 05:49:48 davem
* Merge to 2.1.89
*
* Revision 1.1 1998/02/23 02:45:27 davem
* Merge to 2.1.88
*
*/
#include <linux/module.h>
#include <linux/signal.h>
#include <linux/sched.h>
#include <linux/ioport.h>
#include <linux/blk.h>
#include <linux/init.h>
#include <asm/ecard.h>
#include <asm/io.h>
#include <asm/system.h>
#include "../../scsi/scsi.h"
#include "../../scsi/hosts.h"
#include "../../scsi/constants.h"
#define OAKSCSI_PUBLIC_RELEASE 1
#define NCR5380_read(reg) oakscsi_read(_instance, reg)
#define NCR5380_write(reg, value) oakscsi_write(_instance, reg, value)
#define do_NCR5380_intr do_oakscsi_intr
#define NCR5380_queue_command oakscsi_queue_command
#define NCR5380_abort oakscsi_abort
#define NCR5380_reset oakscsi_reset
#define NCR5380_proc_info oakscsi_proc_info
int NCR5380_proc_info(char *buffer, char **start, off_t offset,
int length, int hostno, int inout);
#define NCR5380_implementation_fields \
int port, ctrl
#define NCR5380_local_declare() \
struct Scsi_Host *_instance
#define NCR5380_setup(instance) \
_instance = instance
#define BOARD_NORMAL 0
#define BOARD_NCR53C400 1
#include "../../scsi/NCR5380.h"
#undef START_DMA_INITIATOR_RECEIVE_REG
#define START_DMA_INITIATOR_RECEIVE_REG (7 + 128)
static const card_ids oakscsi_cids[] = {
{ MANU_OAK, PROD_OAK_SCSI },
{ 0xffff, 0xffff }
};
#define OAK_ADDRESS(card) (ecard_address((card), ECARD_MEMC, 0))
#define OAK_IRQ(card) (IRQ_NONE)
/*
* Function : int oakscsi_detect(Scsi_Host_Template * tpnt)
*
* Purpose : initializes oak NCR5380 driver based on the
* command line / compile time port and irq definitions.
*
* Inputs : tpnt - template for this SCSI adapter.
*
* Returns : 1 if a host adapter was found, 0 if not.
*
*/
static struct expansion_card *ecs[4];
int oakscsi_detect(Scsi_Host_Template * tpnt)
{
int count = 0;
struct Scsi_Host *instance;
tpnt->proc_name = "oakscsi";
memset (ecs, 0, sizeof (ecs));
ecard_startfind ();
while(1) {
if ((ecs[count] = ecard_find(0, oakscsi_cids)) == NULL)
break;
instance = scsi_register (tpnt, sizeof(struct NCR5380_hostdata));
instance->io_port = OAK_ADDRESS(ecs[count]);
instance->irq = OAK_IRQ(ecs[count]);
NCR5380_init(instance, 0);
ecard_claim(ecs[count]);
instance->n_io_port = 255;
request_region (instance->io_port, instance->n_io_port, "Oak SCSI");
if (instance->irq != IRQ_NONE)
if (request_irq(instance->irq, do_oakscsi_intr, SA_INTERRUPT, "Oak SCSI", NULL)) {
printk("scsi%d: IRQ%d not free, interrupts disabled\n",
instance->host_no, instance->irq);
instance->irq = IRQ_NONE;
}
if (instance->irq != IRQ_NONE) {
printk("scsi%d: eek! Interrupts enabled, but I don't think\n", instance->host_no);
printk("scsi%d: that the board had an interrupt!\n", instance->host_no);
}
printk("scsi%d: at port %lX irq", instance->host_no, instance->io_port);
if (instance->irq == IRQ_NONE)
printk ("s disabled");
else
printk (" %d", instance->irq);
printk(" options CAN_QUEUE=%d CMD_PER_LUN=%d release=%d",
tpnt->can_queue, tpnt->cmd_per_lun, OAKSCSI_PUBLIC_RELEASE);
printk("\nscsi%d:", instance->host_no);
NCR5380_print_options(instance);
printk("\n");
++count;
}
#ifdef MODULE
if(count == 0)
printk("No oak scsi devices found\n");
#endif
return count;
}
int oakscsi_release (struct Scsi_Host *shpnt)
{
int i;
if (shpnt->irq != IRQ_NONE)
free_irq (shpnt->irq, NULL);
if (shpnt->io_port)
release_region (shpnt->io_port, shpnt->n_io_port);
for (i = 0; i < 4; i++)
if (shpnt->io_port == OAK_ADDRESS(ecs[i]))
ecard_release (ecs[i]);
return 0;
}
const char * oakscsi_info (struct Scsi_Host *spnt) {
return "";
}
#define STAT(p) inw(p + 144)
extern void inswb(int from, void *to, int len);
static inline int NCR5380_pwrite(struct Scsi_Host *instance, unsigned char *addr,
int len)
{
int iobase = instance->io_port;
printk("writing %p len %d\n",addr, len);
if(!len) return -1;
while(1)
{
int status;
while(((status = STAT(iobase)) & 0x100)==0);
}
}
static inline int NCR5380_pread(struct Scsi_Host *instance, unsigned char *addr,
int len)
{
int iobase = instance->io_port;
printk("reading %p len %d\n", addr, len);
while(len > 0)
{
int status, timeout;
unsigned long b;
timeout = 0x01FFFFFF;
while(((status = STAT(iobase)) & 0x100)==0)
{
timeout--;
if(status & 0x200 || !timeout)
{
printk("status = %08X\n",status);
return 1;
}
}
if(len >= 128)
{
inswb(iobase + 136, addr, 128);
addr += 128;
len -= 128;
}
else
{
b = (unsigned long) inw(iobase + 136);
*addr ++ = b;
len -= 1;
if(len)
*addr ++ = b>>8;
len -= 1;
}
}
return 0;
}
#define oakscsi_read(instance,reg) (inb((instance)->io_port + (reg)))
#define oakscsi_write(instance,reg,val) (outb((val), (instance)->io_port + (reg)))
#undef STAT
#include "../../scsi/NCR5380.c"
static Scsi_Host_Template oakscsi_template = {
module: THIS_MODULE,
proc_info: oakscsi_proc_info,
name: "Oak 16-bit SCSI",
detect: oakscsi_detect,
release: oakscsi_release,
info: oakscsi_info,
queuecommand: oakscsi_queue_command,
abort: oakscsi_abort,
reset: oakscsi_reset,
can_queue: 16,
this_id: 7,
sg_tablesize: SG_ALL,
cmd_per_lun: 2,
use_clustering: DISABLE_CLUSTERING
};
static int __init oakscsi_init(void)
{
scsi_register_module(MODULE_SCSI_HA, &oakscsi_template);
if (oakscsi_template.present)
return 0;
scsi_unregister_module(MODULE_SCSI_HA, &oakscsi_template);
return -ENODEV;
}
static void __exit oakscsi_exit(void)
{
scsi_unregister_module(MODULE_SCSI_HA, &oakscsi_template);
}
module_init(oakscsi_init);
module_exit(oakscsi_exit);
MODULE_AUTHOR("Russell King");
MODULE_DESCRIPTION("Oak SCSI driver");
MODULE_LICENSE("GPL");
EXPORT_NO_SYMBOLS;
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