bbf437ee54
to poll succesfully even if we are sharing the interrupt. Register the interrupt handler before the attach. This commit makes the 294x PCI shared interrupt compliant. This has been tested with an aic7870 motherboard controller and a 294x in the same machine shareing an irq.
127 lines
3.1 KiB
C
127 lines
3.1 KiB
C
/*
|
|
* Product specific probe and attach routines for:
|
|
* 294X and aic7870 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: aic7870.c,v 1.7 1995/03/17 04:27:15 davidg Exp $
|
|
*/
|
|
|
|
#include <pci.h>
|
|
#if NPCI > 0
|
|
#include <sys/param.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/malloc.h>
|
|
#include <kernel.h>
|
|
#include <scsi/scsi_all.h>
|
|
#include <scsi/scsiconf.h>
|
|
#include <pci/pcireg.h>
|
|
#include <pci/pcivar.h>
|
|
#include <i386/scsi/aic7xxx.h>
|
|
|
|
#define PCI_BASEADR0 PCI_MAP_REG_START
|
|
#define PCI_DEVICE_ID_ADAPTEC_2940 0x71789004ul
|
|
#define PCI_DEVICE_ID_ADAPTEC_AIC7870 0x70789004ul
|
|
|
|
static char* aic7870_probe __P((pcici_t tag, pcidi_t type));
|
|
void aic7870_attach __P((pcici_t config_id, int unit));
|
|
|
|
static u_long aic7870_count;
|
|
|
|
struct pci_device ahc_device = {
|
|
"ahc",
|
|
aic7870_probe,
|
|
aic7870_attach,
|
|
&aic7870_count,
|
|
NULL
|
|
};
|
|
|
|
DATA_SET (pcidevice_set, ahc_device);
|
|
|
|
static char*
|
|
aic7870_probe (pcici_t tag, pcidi_t type)
|
|
{
|
|
switch(type) {
|
|
case PCI_DEVICE_ID_ADAPTEC_2940:
|
|
return ("Adaptec 294X SCSI host adapter");
|
|
break;
|
|
case PCI_DEVICE_ID_ADAPTEC_AIC7870:
|
|
return ("Adaptec aic7870 SCSI host adapter");
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
return (0);
|
|
|
|
}
|
|
|
|
void
|
|
aic7870_attach(config_id, unit)
|
|
pcici_t config_id;
|
|
int unit;
|
|
{
|
|
u_long io_port;
|
|
unsigned opri = 0;
|
|
ahc_type ahc_t = AHC_NONE;
|
|
if(!(io_port = pci_conf_read(config_id, PCI_BASEADR0)))
|
|
return;
|
|
/*
|
|
* Make the offsets the same as for EISA
|
|
* The first bit of PCI_BASEADR0 is always
|
|
* set hence we subtract 0xc01 instead of the
|
|
* 0xc00 that you would expect.
|
|
*/
|
|
io_port -= 0xc01ul;
|
|
|
|
switch (pci_conf_read (config_id, PCI_ID_REG)) {
|
|
case PCI_DEVICE_ID_ADAPTEC_2940:
|
|
ahc_t = AHC_294;
|
|
break;
|
|
case PCI_DEVICE_ID_ADAPTEC_AIC7870:
|
|
ahc_t = AHC_AIC7870;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if(ahcprobe(unit, io_port, ahc_t)){
|
|
ahc_unit++;
|
|
/*
|
|
* To be compatible with the isa style of
|
|
* interrupt handler, we pass the unit number
|
|
* not a pointer to our per device structure.
|
|
*/
|
|
if(!(pci_map_int(config_id, ahcintr, (void *)unit,
|
|
&bio_imask))) {
|
|
free(ahcdata[unit], M_TEMP);
|
|
ahcdata[unit] = NULL;
|
|
return;
|
|
}
|
|
/*
|
|
* Since ahc_attach will poll, protect ourself
|
|
* from the registered interrupt handler.
|
|
*/
|
|
opri = splbio();
|
|
ahc_attach(unit);
|
|
splx(opri);
|
|
}
|
|
return;
|
|
}
|
|
|
|
#endif /* NPCI > 0 */
|