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/*
* Product specific probe and attach routines for:
* Buslogic BT946 and BT956 SCSI controllers
*
* Copyright (c) 1995 Justin T. Gibbs
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Absolutely no warranty of function or purpose is made by the author
* Justin T. Gibbs.
* 4. Modifications may be freely made to this file if the above conditions
* are met.
*
* $Id: bt9xx.c,v 1.2 1995/12/14 09:53:56 phk Exp $
*/
#include <pci.h>
#if NPCI > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include <i386/scsi/btreg.h>
/* XXX Need more device IDs */
#define PCI_BASEADR0 PCI_MAP_REG_START
#define PCI_DEVICE_ID_BUSLOGIC_946 0x104B1040ul
static char* bt_pci_probe __P((pcici_t tag, pcidi_t type));
static void bt_pci_attach __P((pcici_t config_id, int unit));
static int bt_pci_intr __P((void *arg));
static struct pci_device bt_pci_driver = {
"bt",
bt_pci_probe,
bt_pci_attach,
&bt_unit,
NULL
};
DATA_SET (pcidevice_set, bt_pci_driver);
static char*
bt_pci_probe (pcici_t tag, pcidi_t type)
{
switch(type) {
case PCI_DEVICE_ID_BUSLOGIC_946:
return ("Buslogic 946 SCSI host adapter");
break;
default:
break;
}
return (0);
}
static void
bt_pci_attach(config_id, unit)
pcici_t config_id;
int unit;
{
u_long io_port;
unsigned opri = 0;
struct bt_data *bt;
if(!(io_port = pci_conf_read(config_id, PCI_BASEADR0)))
return;
/*
* The first bit of PCI_BASEADR0 is always
* set hence we mask it off.
*/
io_port &= 0xfffffffe;
if(!(bt = bt_alloc(unit, io_port)))
return; /* XXX PCI code should take return status */
if(!(pci_map_int(config_id, bt_pci_intr, (void *)bt, &bio_imask))) {
bt_free(bt);
return;
}
/*
* Protect ourself from spurrious interrupts during
* intialization and attach. We should really rely
* on interrupts during attach, but we don't have
* access to our interrupts during ISA probes, so until
* that changes, we mask our interrupts during attach
* too.
*/
opri = splbio();
if(bt_init(bt)){
bt_free(bt);
splx(opri);
return; /* XXX PCI code should take return status */
}
bt_attach(bt);
splx(opri);
return;
}
/*
* Handle an PCI interrupt.
* XXX should go away as soon as PCI interrupt handlers
* return void.
*/
static int
bt_pci_intr(arg)
void *arg;
{
bt_intr(arg);
return (1); /*
* XXX: Always say we handle the interrupt.
* won't work with edge-triggered ints.
*/
}
#endif /* NPCI > 0 */
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