959cd912ba
If RAMENB is set in devconfig, walk the external SCBs. Some Intel Xpress motherboards set this bit. For external SCBs for the 3940. It doesn't set RAMPS or RAMENB, but does have the ram.
197 lines
5.2 KiB
C
197 lines
5.2 KiB
C
/*
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* Product specific probe and attach routines for:
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* 3940, 2940, aic7870, and aic7850 SCSI controllers
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*
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* Copyright (c) 1995 Justin T. Gibbs
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice immediately at the beginning of the file, without modification,
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* this list of conditions, and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Absolutely no warranty of function or purpose is made by the author
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* Justin T. Gibbs.
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* 4. Modifications may be freely made to this file if the above conditions
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* are met.
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*
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* $Id: aic7870.c,v 1.15 1995/10/08 17:46:11 gibbs Exp $
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*/
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#include <pci.h>
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#if NPCI > 0
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/malloc.h>
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#include <sys/kernel.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#include <pci/pcireg.h>
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#include <pci/pcivar.h>
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#include <i386/scsi/aic7xxx.h>
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#define PCI_BASEADR0 PCI_MAP_REG_START
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#define PCI_DEVICE_ID_ADAPTEC_3940U 0x82789004ul
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#define PCI_DEVICE_ID_ADAPTEC_2940U 0x81789004ul
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#define PCI_DEVICE_ID_ADAPTEC_3940 0x72789004ul
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#define PCI_DEVICE_ID_ADAPTEC_2940 0x71789004ul
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#define PCI_DEVICE_ID_ADAPTEC_AIC7880 0x80789004ul
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#define PCI_DEVICE_ID_ADAPTEC_AIC7870 0x70789004ul
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#define PCI_DEVICE_ID_ADAPTEC_AIC7850 0x50789004ul
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#define DEVCONFIG 0x40
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#define MPORTMODE 0x00000400ul /* aic7870 only */
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#define RAMPSM 0x00000200ul /* aic7870 only */
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#define VOLSENSE 0x00000100ul
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#define RAMENB 0x00000080ul
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#define MRDCEN 0x00000040ul
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#define EXTSCBTIME 0x00000020ul /* aic7870 only */
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#define EXTSCBPEN 0x00000010ul /* aic7870 only */
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#define BERREN 0x00000008ul
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#define DACEN 0x00000004ul
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#define STPWLEVEL 0x00000002ul
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#define DIFACTNEGEN 0x00000001ul /* aic7870 only */
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static char* aic7870_probe __P((pcici_t tag, pcidi_t type));
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void aic7870_attach __P((pcici_t config_id, int unit));
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static u_long aic7870_count;
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static u_char aic3940_count;
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struct pci_device ahc_device = {
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"ahc",
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aic7870_probe,
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aic7870_attach,
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&aic7870_count,
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NULL
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};
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DATA_SET (pcidevice_set, ahc_device);
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static char*
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aic7870_probe (pcici_t tag, pcidi_t type)
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{
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switch(type) {
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case PCI_DEVICE_ID_ADAPTEC_3940U:
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return ("Adaptec 3940 Ultra SCSI host adapter");
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break;
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case PCI_DEVICE_ID_ADAPTEC_3940:
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return ("Adaptec 3940 SCSI host adapter");
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break;
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case PCI_DEVICE_ID_ADAPTEC_2940U:
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return ("Adaptec 2940 Ultra SCSI host adapter");
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break;
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case PCI_DEVICE_ID_ADAPTEC_2940:
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return ("Adaptec 2940 SCSI host adapter");
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break;
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case PCI_DEVICE_ID_ADAPTEC_AIC7880:
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return ("Adaptec aic7880 Ultra SCSI host adapter");
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break;
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case PCI_DEVICE_ID_ADAPTEC_AIC7870:
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return ("Adaptec aic7870 SCSI host adapter");
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break;
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case PCI_DEVICE_ID_ADAPTEC_AIC7850:
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return ("Adaptec aic7850 SCSI host adapter");
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break;
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default:
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break;
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}
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return (0);
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}
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void
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aic7870_attach(config_id, unit)
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pcici_t config_id;
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int unit;
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{
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u_long io_port;
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u_long id;
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unsigned opri = 0;
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ahc_type ahc_t = AHC_NONE;
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ahc_flag ahc_f = AHC_FNONE;
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if(!(io_port = pci_conf_read(config_id, PCI_BASEADR0)))
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return;
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/*
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* Make the offsets the same as for EISA
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* The first bit of PCI_BASEADR0 is always
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* set hence we subtract 0xc01 instead of the
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* 0xc00 that you would expect.
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*/
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io_port -= 0xc01ul;
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switch ((id = pci_conf_read(config_id, PCI_ID_REG))) {
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case PCI_DEVICE_ID_ADAPTEC_3940U:
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case PCI_DEVICE_ID_ADAPTEC_3940:
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if (id == PCI_DEVICE_ID_ADAPTEC_3940U)
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ahc_t = AHC_394U;
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else
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ahc_t = AHC_394;
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aic3940_count++;
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if(!(aic3940_count & 0x01))
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/* Even count implies second channel */
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ahc_f |= AHC_CHNLB;
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/* Even though it doesn't turn on RAMPS, it has them */
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ahc_f |= AHC_EXTSCB;
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break;
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case PCI_DEVICE_ID_ADAPTEC_2940U:
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ahc_t = AHC_294U;
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break;
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case PCI_DEVICE_ID_ADAPTEC_2940:
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ahc_t = AHC_294;
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break;
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case PCI_DEVICE_ID_ADAPTEC_AIC7880:
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ahc_t = AHC_AIC7880;
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break;
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case PCI_DEVICE_ID_ADAPTEC_AIC7870:
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ahc_t = AHC_AIC7870;
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break;
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case PCI_DEVICE_ID_ADAPTEC_AIC7850:
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ahc_t = AHC_AIC7850;
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break;
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default:
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break;
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}
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if(ahc_t & AHC_AIC7870){
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u_long devconfig = pci_conf_read(config_id, DEVCONFIG);
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if(devconfig & (RAMPSM|RAMENB)) {
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/*
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* External SRAM present. Have the probe walk
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* the SCBs to see how much SRAM we have and set
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* the number of SCBs accordingly.
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*/
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ahc_f |= AHC_EXTSCB;
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}
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}
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if(ahcprobe(unit, io_port, ahc_t, ahc_f)){
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ahc_unit++;
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/*
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* To be compatible with the isa style of
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* interrupt handler, we pass the unit number
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* not a pointer to our per device structure.
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*/
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if(!(pci_map_int(config_id, ahcintr, (void *)unit,
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&bio_imask))) {
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free(ahcdata[unit], M_TEMP);
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ahcdata[unit] = NULL;
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return;
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}
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/*
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* Since ahc_attach will poll, protect ourself
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* from the registered interrupt handler.
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*/
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opri = splbio();
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ahc_attach(unit);
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splx(opri);
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}
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return;
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}
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#endif /* NPCI > 0 */
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