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/* $NetBSD: aha284x.c,v 1.2 1996/01/13 02:06:30 thorpej Exp $ */
/*
* Copyright (c) 1996 Michael Graff. 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, 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Michael Graff.
* 4. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/device.h>
#include <scsi/scsi_all.h>
#include <scsi/scsiconf.h>
#include <dev/isa/isavar.h>
#include <dev/ic/aic7xxxvar.h>
#include <machine/pio.h>
static int ahe_probe __P((struct device *, void *, void *));
static void ahe_attach __P((struct device *, struct device *, void *));
struct cfdriver ahecd = {
NULL, /* devices found */
"ahe", /* device name */
ahe_probe, /* match routine */
ahe_attach, /* attach routine */
DV_DULL, /* device class */
sizeof(struct ahc_softc), /* size of private dev data */
};
/*
* shouldn't this be in aic7xxxvar.h?
*/
int ahcintr __P((void *));
/*
* Standard EISA Host ID regs (Offset from slot base)
* These seem to work on the aha284x as well (VLB card)
*/
#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) | '@')
typedef struct {
ahc_type type;
unsigned char id; /* The Last EISA Host ID reg */
} aic7770_sig;
aic7770_sig valid_ids[] = {
/* Entries of other tested adaptors should be added here */
{ AHC_274, 0x70 }, /*aic7770 on Motherboard*/
{ AHC_274, 0x71 }, /*274x*/
{ AHC_284, 0x56 }, /*284x, BIOS enabled*/
{ AHC_284, 0x57 } /*284x, BIOS disabled*/
};
int
ahe_probe(parent, match, aux)
struct device *parent;
void *match, *aux;
{
struct ahc_softc *ahc = match;
struct isa_attach_args *ia = aux;
char intdef;
int iobase;
u_char sig_id[4];
int i;
#ifdef NEWCONFIG
if (ia->ia_iobase == IOBASEUNK)
return 0;
#endif
/*
* Make the offsets the same as for EISA
*
* I have NO idea why the values in aic7xxx.c are all 0xc00 too
* high, but this hack fixes it. This is the same hack that's in
* the 294x pci code.
*/
iobase = ia->ia_iobase - 0xc00;
for (i = 0; i < sizeof(sig_id); i++) {
/*
* An outb is required to prime these
* registers on VL cards
*/
outb(iobase + HID0, HID0 + i);
sig_id[i] = inb(iobase + HID0 + i);
}
if (sig_id[0] == 0xff)
return 0;
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)
return 0;
ahc->type = 0;
for (i = 0; i < sizeof(valid_ids)/sizeof(aic7770_sig); i++)
if (sig_id[3] == valid_ids[i].id) {
ahc->type = valid_ids[i].type;
break;
}
if (ahc->type == 0)
printf("%s: Unknown board type 0x%02x\n",
ahc->sc_dev.dv_xname, sig_id[3]);
if (ahcprobe(ahc, iobase) == 0)
return 0;
/*
* set up some other isa variables and make certain the irq the
* card is set at matches the one in the configuration file,
* it is wa defined there
*/
ia->ia_iosize = 0x100; /* address range for the card */
if (ia->ia_irq == IRQUNK)
ia->ia_irq = ahc->sc_irq; /* probed from the card */
else
if (ia->ia_irq != ahc->sc_irq) {
printf("%s: irq mismatch; kernel configured %d != board configured %d\n",
ahc->sc_dev.dv_xname, ia->ia_irq, ahc->sc_irq);
return 0;
}
/* Must be ok... */
return 1;
}
void
ahe_attach(parent, self, aux)
struct device *parent, *self;
void *aux;
{
struct ahc_softc *ahc = (void *)self;
struct isa_attach_args *ia = aux;
#ifdef NEWCONFIG
isa_establish(&ahc->sc_id, &ahc->sc_dev);
#endif
ahc->sc_ih = isa_intr_establish(ia->ia_irq, IST_EDGE, IPL_BIO,
ahcintr, ahc);
/*
* attach the devices on the bus
*/
ahcattach(ahc);
}
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