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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.
*
* aic7770.c,v 1.14 1995/05/30 08:01:15 rgrimes Exp
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <i386/isa/isa.h>
#include <i386/isa/isa_device.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <sys/devconf.h>
#include <machine/cpufunc.h>
#include <i386/scsi/aic7xxx.h>
int aic7770probe __P((struct isa_device *dev));
int aic7770_attach __P((struct isa_device *dev));
/*
* Standard EISA Host ID regs (Offset from slot base)
*/
#define HID0 0xC80 /* 0,1: msb of ID2, 2-7: ID1 */
#define HID1 0xC81 /* 0-4: ID3, 5-7: LSB ID2 */
#define HID2 0xC82 /* product */
#define HID3 0xC83 /* firmware revision */
#define CHAR1(B1,B2) (((B1>>2) & 0x1F) | '@')
#define CHAR2(B1,B2) (((B1<<3) & 0x18) | ((B2>>5) & 0x7)|'@')
#define CHAR3(B1,B2) ((B2 & 0x1F) | '@')
#define EISA_MAX_SLOTS 16 /* XXX should be defined in a common header */
static ahc_slot = 0; /* slot last board was found in */
struct isa_driver ahcdriver = {aic7770probe, aic7770_attach, "ahc"};
typedef struct
{
ahc_type type;
unsigned char id; /* The Last EISA Host ID reg */
} aic7770_sig;
static struct kern_devconf kdc_aic7770[NAHC] = { {
0, 0, 0, /* filled in by dev_attach */
"ahc", 0, { MDDT_ISA, 0, "bio" },
isa_generic_externalize, 0, 0, ISA_EXTERNALLEN,
&kdc_isa0, /* parent */
0, /* parentdata */
DC_UNCONFIGURED, /* always start out here */
"Adaptec aic7770 based SCSI host adapter",
DC_CLS_MISC /* host adapters aren't special */
} };
static inline void
aic7770_registerdev(struct isa_device *id)
{
if(id->id_unit)
kdc_aic7770[id->id_unit] = kdc_aic7770[0];
kdc_aic7770[id->id_unit].kdc_unit = id->id_unit;
kdc_aic7770[id->id_unit].kdc_parentdata = id;
dev_attach(&kdc_aic7770[id->id_unit]);
}
int
aic7770probe(struct isa_device *dev)
{
u_long port;
int i;
u_char sig_id[4];
aic7770_sig valid_ids[] = {
/* Entries of other tested adaptors should be added here */
{ AHC_274, 0x71 }, /*274x*/
{ AHC_274, 0x70 }, /*aic7770 on Motherboard*/
{ AHC_284, 0x56 }, /*284x, BIOS enabled*/
{ AHC_284, 0x57 } /*284x, BIOS disabled*/
};
ahc_slot++;
while (ahc_slot < EISA_MAX_SLOTS) {
port = 0x1000 * ahc_slot;
for( i = 0; i < sizeof(sig_id); i++ )
{
/*
* An outb is required to prime these registers on
* VL cards
*/
outb( port + HID0, HID0 + i );
sig_id[i] = inb(port + HID0 + i);
}
if (sig_id[0] == 0xff) {
ahc_slot++;
continue;
}
/* Check manufacturer's ID. */
if ((CHAR1(sig_id[0], sig_id[1]) == 'A')
&& (CHAR2(sig_id[0], sig_id[1]) == 'D')
&& (CHAR3(sig_id[0], sig_id[1]) == 'P')
&& (sig_id[2] == 0x77)) {
for(i=0; i < sizeof(valid_ids)/sizeof(aic7770_sig);i++)
if ( sig_id[3] == valid_ids[i].id ) {
int unit = dev->id_unit;
dev->id_iobase = port;
#ifndef DEV_LKM
aic7770_registerdev(dev);
#endif /* DEV_LKM */
if(ahcprobe(unit, port,
valid_ids[i].type)){
/*
* If it's there, put in it's
* interrupt vectors
*/
dev->id_irq = (1 <<
ahcdata[unit]->vect);
dev->id_drq = -1; /* EISA dma */
ahc_unit++;
return IO_EISASIZE;
}
}
}
ahc_slot++;
}
return 0;
}
int
aic7770_attach(dev)
struct isa_device *dev;
{
int unit = dev->id_unit;
kdc_aic7770[unit].kdc_state = DC_BUSY; /* host adapters always busy */
return ahc_attach(unit);
}
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