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135 lines
3.1 KiB
C
135 lines
3.1 KiB
C
/*
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* Product specific probe and attach routines for:
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* Buslogic BT946 and BT956 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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* $Id$
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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/btreg.h>
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/* XXX Need more device IDs */
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#define PCI_BASEADR0 PCI_MAP_REG_START
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#define PCI_DEVICE_ID_BUSLOGIC_946 0x104B1040ul
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static char* bt_pci_probe __P((pcici_t tag, pcidi_t type));
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static void bt_pci_attach __P((pcici_t config_id, int unit));
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static int bt_pci_intr __P((void *arg));
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struct pci_device bt_pci_driver = {
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"bt",
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bt_pci_probe,
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bt_pci_attach,
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&bt_unit,
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NULL
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};
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DATA_SET (pcidevice_set, bt_pci_driver);
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static char*
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bt_pci_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_BUSLOGIC_946:
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return ("Buslogic 946 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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static void
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bt_pci_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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struct bt_data *bt;
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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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* The first bit of PCI_BASEADR0 is always
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* set hence we mask it off.
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*/
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io_port &= 0xfffffffe;
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if(!(bt = bt_alloc(unit, io_port)))
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return; /* XXX PCI code should take return status */
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if(!(pci_map_int(config_id, bt_pci_intr, (void *)bt, &bio_imask))) {
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bt_free(bt);
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return;
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}
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/*
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* Protect ourself from spurrious interrupts during
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* intialization and attach. We should really rely
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* on interrupts during attach, but we don't have
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* access to our interrupts during ISA probes, so until
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* that changes, we mask our interrupts during attach
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* too.
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*/
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opri = splbio();
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if(bt_init(bt)){
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bt_free(bt);
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splx(opri);
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return; /* XXX PCI code should take return status */
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}
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bt_attach(bt);
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splx(opri);
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return;
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}
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/*
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* Handle an PCI interrupt.
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* XXX should go away as soon as PCI interrupt handlers
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* return void.
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*/
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static int
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bt_pci_intr(arg)
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void *arg;
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{
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btintr(arg);
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return (1); /*
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* XXX: Always say we handle the interrupt.
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* won't work with edge-triggered ints.
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*/
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}
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#endif /* NPCI > 0 */
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