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Eisa Probe portion of revamped Buslogic SCSI driver.
This commit is contained in:
Justin T. Gibbs
parent
a1d01daf77
commit
8313579d97
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=12790
259
sys/i386/eisa/bt74x.c
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259
sys/i386/eisa/bt74x.c
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/*
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* Product specific probe and attach routines for:
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* Buslogic BT74x 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 "eisa.h"
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#if NEISA > 0
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/devconf.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 <machine/clock.h>
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#include <i386/eisa/eisaconf.h>
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#include <i386/scsi/btreg.h>
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#define EISA_DEVICE_ID_BUSLOGIC_74X_B 0x0ab34201
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#define EISA_DEVICE_ID_BUSLOGIC_74X_C 0x0ab34202
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#define BT_IOSIZE 0x04 /* Move to central header */
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#define BT_EISA_IOSIZE 0x100
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#define EISA_IOCONF 0x08C
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#define PORTADDR 0x07
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#define PORT_330 0x00
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#define PORT_334 0x01
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#define PORT_230 0x02
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#define PORT_234 0x03
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#define PORT_130 0x04
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#define PORT_134 0x05
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#define IRQ_CHANNEL 0xe0
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#define INT_11 0x40
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#define INT_10 0x20
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#define INT_15 0xa0
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#define INT_12 0x60
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#define INT_14 0x80
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#define INT_9 0x00
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#define EISA_IRQ_TYPE 0x08D
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#define LEVEL 0x40
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static int bt_eisa_probe __P((void));
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static int bt_eisa_attach __P((struct eisa_device *e_dev));
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struct eisa_driver bt_eisa_driver = {
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"bt",
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bt_eisa_probe,
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bt_eisa_attach,
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/*shutdown*/NULL,
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&bt_unit
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};
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DATA_SET (eisadriver_set, bt_eisa_driver);
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static struct kern_devconf kdc_eisa_bt = {
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0, 0, 0, /* filled in by dev_attach */
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"bt", 0, { MDDT_EISA, 0, "bio" },
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eisa_generic_externalize, 0, 0, EISA_EXTERNALLEN,
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&kdc_eisa0, /* parent */
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0, /* parentdata */
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DC_UNCONFIGURED, /* always start out here */
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NULL,
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DC_CLS_MISC /* host adapters aren't special */
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};
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static char *bt_match __P((eisa_id_t type));
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static char*
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bt_match(type)
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eisa_id_t type;
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{
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switch(type) {
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case EISA_DEVICE_ID_BUSLOGIC_74X_B:
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return ("Buslogic 74xB SCSI host adapter");
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break;
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case EISA_DEVICE_ID_BUSLOGIC_74X_C:
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return ("Buslogic 74xC 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 (NULL);
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}
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static int
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bt_eisa_probe(void)
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{
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u_long iobase;
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char intdef;
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u_long irq;
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struct eisa_device *e_dev = NULL;
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int count;
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count = 0;
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while ((e_dev = eisa_match_dev(e_dev, bt_match))) {
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u_char ioconf;
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u_long port;
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int irq;
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iobase = e_dev->ioconf.iobase;
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#ifdef MULTIPLE_IOSPACES
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eisa_add_iospace(e_dev, iobase, BT_EISA_IOSIZE);
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#endif
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ioconf = inb(iobase + EISA_IOCONF);
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/* Determine "ISA" I/O port */
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switch (ioconf & PORTADDR) {
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case PORT_330:
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port = 0x330;
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break;
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case PORT_334:
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port = 0x334;
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break;
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case PORT_230:
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port = 0x230;
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break;
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case PORT_234:
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port = 0x234;
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break;
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case PORT_130:
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port = 0x130;
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break;
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case PORT_134:
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port = 0x134;
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break;
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default:
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/* Disabled */
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printf("bt: Buslogic EISA Adapter at slot %d "
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"has a disabled I/O port. Cannot "
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"attach.\n", e_dev->ioconf.slot);
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continue;
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}
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eisa_add_iospace(e_dev, port, BT_IOSIZE);
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/* Determine our IRQ */
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switch (ioconf & IRQ_CHANNEL) {
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case INT_11:
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irq = 11;
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break;
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case INT_10:
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irq = 10;
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break;
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case INT_15:
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irq = 15;
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break;
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case INT_12:
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irq = 12;
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break;
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case INT_14:
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irq = 14;
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break;
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case INT_9:
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irq = 9;
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break;
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default:
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/* Disabled */
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printf("bt: Buslogic EISA Adapter at slot %d "
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"has its IRQ disabled. Cannot "
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"attach.\n", e_dev->ioconf.slot);
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continue;
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}
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eisa_add_intr(e_dev, irq);
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eisa_registerdev(e_dev, &bt_eisa_driver, &kdc_eisa_bt);
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count++;
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}
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return count;
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}
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static int
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bt_eisa_attach(e_dev)
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struct eisa_device *e_dev;
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{
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struct bt_data *bt;
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int unit = e_dev->unit;
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int irq = ffs(e_dev->ioconf.irq) - 1;
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#ifdef MULTIPLE_IOADDR
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u_char level_intr = inb((e_dev->ioconf.iobase[1]) + EISA_IRQ_TYPE)
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& LEVEL;
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#else
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u_char level_intr = inb((e_dev->ioconf.slot * 0x1c00) + EISA_IRQ_TYPE)
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& LEVEL;
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#endif
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eisa_reg_start(e_dev);
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if(eisa_reg_iospace(e_dev, e_dev->ioconf.iobase, BT_IOSIZE)) {
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return -1;
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}
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#ifdef MULTIPLE_IOADDR
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/* Almost like this. Will depend on the definition of iobase */
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if(eisa_reg_iospace(e_dev, e_dev->ioconf.iobase[1], BT_EISA_IOSIZE)) {
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return -1;
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#endif
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if(!(bt = bt_alloc(unit, e_dev->ioconf.iobase))) {
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return -1;
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}
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if(eisa_reg_intr(e_dev, irq, btintr, (void *)bt, &bio_imask,
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/*shared ==*/level_intr)) {
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bt_free(bt);
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return -1;
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}
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eisa_reg_end(e_dev);
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/*
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* Now that we know we own the resources we need, do the full
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* card initialization.
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*/
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if(bt_init(bt)){
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bt_free(bt);
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/*
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* The board's IRQ line will not be left enabled
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* if we can't intialize correctly, so its safe
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* to release the irq.
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*/
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eisa_release_intr(e_dev, irq, btintr);
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return -1;
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}
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e_dev->kdc->kdc_state = DC_BUSY; /* host adapters always busy */
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/* Attach sub-devices - always succeeds */
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bt_attach(bt);
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if(eisa_enable_intr(e_dev, irq)) {
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bt_free(bt);
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eisa_release_intr(e_dev, irq, btintr);
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return -1;
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}
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return 0;
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}
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#endif /* NEISA > 0 */
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