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freebsd/sys/pci/aic7870.c
1995-11-07 05:33:27 +00:00

198 lines
5.1 KiB
C

/*
* Product specific probe and attach routines for:
* 3940, 2940, aic7870, and aic7850 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 1.18 1995/11/05 04:51:58 gibbs 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/aic7xxx.h>
#define PCI_BASEADR0 PCI_MAP_REG_START
#define PCI_DEVICE_ID_ADAPTEC_3940U 0x82789004ul
#define PCI_DEVICE_ID_ADAPTEC_2940U 0x81789004ul
#define PCI_DEVICE_ID_ADAPTEC_3940 0x72789004ul
#define PCI_DEVICE_ID_ADAPTEC_2940 0x71789004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7880 0x80789004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7870 0x70789004ul
#define PCI_DEVICE_ID_ADAPTEC_AIC7850 0x50789004ul
#define DEVCONFIG 0x40
#define MPORTMODE 0x00000400ul /* aic7870 only */
#define RAMPSM 0x00000200ul /* aic7870 only */
#define VOLSENSE 0x00000100ul
#define RAMENB 0x00000080ul
#define MRDCEN 0x00000040ul
#define EXTSCBTIME 0x00000020ul /* aic7870 only */
#define EXTSCBPEN 0x00000010ul /* aic7870 only */
#define BERREN 0x00000008ul
#define DACEN 0x00000004ul
#define STPWLEVEL 0x00000002ul
#define DIFACTNEGEN 0x00000001ul /* aic7870 only */
static char* aic7870_probe __P((pcici_t tag, pcidi_t type));
void aic7870_attach __P((pcici_t config_id, int unit));
static u_char aic3940_count;
struct pci_device ahc_pci_driver = {
"ahc",
aic7870_probe,
aic7870_attach,
&ahc_unit,
NULL
};
DATA_SET (pcidevice_set, ahc_pci_driver);
static char*
aic7870_probe (pcici_t tag, pcidi_t type)
{
switch(type) {
case PCI_DEVICE_ID_ADAPTEC_3940U:
return ("Adaptec 3940 Ultra SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_3940:
return ("Adaptec 3940 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2940U:
return ("Adaptec 2940 Ultra SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_2940:
return ("Adaptec 2940 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7880:
return ("Adaptec aic7880 Ultra SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7870:
return ("Adaptec aic7870 SCSI host adapter");
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7850:
return ("Adaptec aic7850 SCSI host adapter");
break;
default:
break;
}
return (0);
}
void
aic7870_attach(config_id, unit)
pcici_t config_id;
int unit;
{
u_long io_port;
u_long id;
unsigned opri = 0;
ahc_type ahc_t = AHC_NONE;
ahc_flag ahc_f = AHC_FNONE;
struct ahc_data *ahc;
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;
switch ((id = pci_conf_read(config_id, PCI_ID_REG))) {
case PCI_DEVICE_ID_ADAPTEC_3940U:
case PCI_DEVICE_ID_ADAPTEC_3940:
if (id == PCI_DEVICE_ID_ADAPTEC_3940U)
ahc_t = AHC_394U;
else
ahc_t = AHC_394;
aic3940_count++;
if(!(aic3940_count & 0x01))
/* Even count implies second channel */
ahc_f |= AHC_CHNLB;
/* Even though it doesn't turn on RAMPS, it has them */
ahc_f |= AHC_EXTSCB;
break;
case PCI_DEVICE_ID_ADAPTEC_2940U:
ahc_t = AHC_294U;
break;
case PCI_DEVICE_ID_ADAPTEC_2940:
ahc_t = AHC_294;
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7880:
ahc_t = AHC_AIC7880;
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7870:
ahc_t = AHC_AIC7870;
break;
case PCI_DEVICE_ID_ADAPTEC_AIC7850:
ahc_t = AHC_AIC7850;
break;
default:
break;
}
if(ahc_t & AHC_AIC7870){
u_long devconfig = pci_conf_read(config_id, DEVCONFIG);
if(devconfig & (RAMPSM|RAMENB)) {
/*
* External SRAM present. Have the probe walk
* the SCBs to see how much SRAM we have and set
* the number of SCBs accordingly.
*/
ahc_f |= AHC_EXTSCB;
}
}
ahc_reset(io_port);
if(!(ahc = ahc_alloc(unit, io_port, ahc_t, ahc_f)))
return; /* XXX PCI code should take return status */
if(!(pci_map_int(config_id, ahcintr, (void *)ahc, &bio_imask))) {
ahc_free(ahc);
return;
}
/*
* Protect ourself from spurrious interrupts during
* intialization.
*/
opri = splbio();
if(ahc_init(unit)){
ahc_free(ahc);
splx(opri);
return; /* XXX PCI code should take return status */
}
ahc_attach(unit);
splx(opri);
return;
}
#endif /* NPCI > 0 */