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/*
* Product specific probe and attach routines for:
* 27/284X and aic7770 motherboard 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: aic7770.c,v 1.17 1995/11/05 04:42:47 gibbs Exp $
*/
#include "eisa.h"
#if NEISA > 0
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/devconf.h>
#include <sys/kernel.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <machine/clock.h>
#include <i386/eisa/eisaconf.h>
#include <i386/scsi/aic7xxx.h>
#include <dev/aic7xxx/aic7xxx_reg.h>
#define EISA_DEVICE_ID_ADAPTEC_AIC7770 0x04907770
#define EISA_DEVICE_ID_ADAPTEC_274x 0x04907771
#define EISA_DEVICE_ID_ADAPTEC_284xB 0x04907756 /* BIOS enabled */
#define EISA_DEVICE_ID_ADAPTEC_284x 0x04907757 /* BIOS disabled*/
#define AHC_EISA_IOSIZE 0x100
#define INTDEF 0x5cul /* Interrupt Definition Register */
int aic7770probe __P((void));
int aic7770_attach __P((struct eisa_device *e_dev));
struct eisa_driver ahc_eisa_driver = {
"ahc",
aic7770probe,
aic7770_attach,
/*shutdown*/NULL,
&ahc_unit
};
DATA_SET (eisadriver_set, ahc_eisa_driver);
static struct kern_devconf kdc_aic7770 = {
0, 0, 0, /* filled in by dev_attach */
"ahc", 0, { MDDT_EISA, 0, "bio" },
eisa_generic_externalize, 0, 0, EISA_EXTERNALLEN,
&kdc_eisa0, /* parent */
0, /* parentdata */
DC_UNCONFIGURED, /* always start out here */
NULL,
DC_CLS_MISC /* host adapters aren't special */
};
static char*
aic7770_match(type)
eisa_id_t type;
{
switch(type) {
case EISA_DEVICE_ID_ADAPTEC_AIC7770:
return ("Adaptec aic7770 SCSI host adapter");
break;
case EISA_DEVICE_ID_ADAPTEC_274x:
return ("Adaptec 274X SCSI host adapter");
break;
case EISA_DEVICE_ID_ADAPTEC_284xB:
case EISA_DEVICE_ID_ADAPTEC_284x:
return ("Adaptec 284X SCSI host adapter");
break;
default:
break;
}
return (NULL);
}
int
aic7770probe(void)
{
u_long iobase;
char intdef;
u_long irq;
struct eisa_device *e_dev = NULL;
int count;
count = 0;
while ((e_dev = eisa_match_dev(e_dev, aic7770_match))) {
iobase = e_dev->ioconf.iobase;
ahc_reset(iobase);
eisa_add_iospace(e_dev, iobase, AHC_EISA_IOSIZE);
intdef = inb(INTDEF + iobase);
switch (intdef & 0xf) {
case 9:
irq = 9;
break;
case 10:
irq = 10;
break;
case 11:
irq = 11;
break;
case 12:
irq = 12;
break;
case 14:
irq = 14;
break;
case 15:
irq = 15;
break;
default:
printf("aic7770 at slot %d: illegal "
"irq setting %d\n", e_dev->ioconf.slot,
intdef);
continue;
}
eisa_add_intr(e_dev, irq);
eisa_registerdev(e_dev, &ahc_eisa_driver, &kdc_aic7770);
if(e_dev->id == EISA_DEVICE_ID_ADAPTEC_284xB
|| e_dev->id == EISA_DEVICE_ID_ADAPTEC_284x) {
/* Our real parent is the isa bus. Say so */
e_dev->kdc->kdc_parent = &kdc_isa0;
}
count++;
}
return count;
}
int
aic7770_attach(e_dev)
struct eisa_device *e_dev;
{
ahc_type type;
struct ahc_data *ahc;
int unit = e_dev->unit;
int irq = ffs(e_dev->ioconf.irq) - 1;
switch(e_dev->id) {
case EISA_DEVICE_ID_ADAPTEC_AIC7770:
type = AHC_AIC7770;
break;
case EISA_DEVICE_ID_ADAPTEC_274x:
type = AHC_274;
break;
case EISA_DEVICE_ID_ADAPTEC_284xB:
case EISA_DEVICE_ID_ADAPTEC_284x:
type = AHC_284;
break;
default:
printf("aic7770_attach: Unknown device type!\n");
return -1;
break;
}
if(!(ahc = ahc_alloc(unit, e_dev->ioconf.iobase, type, AHC_FNONE)))
return -1;
eisa_reg_start(e_dev);
if(eisa_reg_iospace(e_dev, e_dev->ioconf.iobase, AHC_EISA_IOSIZE)) {
ahc_free(ahc);
return -1;
}
/*
* The IRQMS bit enables level sensitive interrupts only allow
* IRQ sharing if its set.
*/
if(eisa_reg_intr(e_dev, irq, ahc_eisa_intr, (void *)ahc, &bio_imask,
/*shared ==*/ahc->pause & IRQMS)) {
ahc_free(ahc);
return -1;
}
eisa_reg_end(e_dev);
/*
* Now that we know we own the resources we need, do the full
* card initialization.
*/
if(ahc_init(unit)){
ahc_free(ahc);
/*
* The board's IRQ line will not be left enabled
* if we can't intialize correctly, so its safe
* to release the irq.
*/
eisa_release_intr(e_dev, irq, ahc_eisa_intr);
return -1;
}
e_dev->kdc->kdc_state = DC_BUSY; /* host adapters always busy */
/* Attach sub-devices - always succeeds */
ahc_attach(unit);
return(eisa_enable_intr(e_dev, irq));
}
#endif /* NEISA > 0 */
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