478 lines
11 KiB
C
478 lines
11 KiB
C
/*
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* Product specific probe and attach routines for:
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* 27/284X and aic7770 motherboard SCSI controllers
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*
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* Copyright (c) 1994, 1995, 1996, 1997, 1998 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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: ahc_eisa.c,v 1.4 1998/12/15 08:24:45 gibbs Exp $
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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/kernel.h>
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#include <machine/bus_pio.h>
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#include <machine/bus.h>
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#include <i386/eisa/eisaconf.h>
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#include <cam/cam.h>
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#include <cam/cam_ccb.h>
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#include <cam/cam_sim.h>
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#include <cam/cam_xpt_sim.h>
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#include <cam/scsi/scsi_all.h>
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#include <dev/aic7xxx/aic7xxx.h>
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#include <dev/aic7xxx/93cx6.h>
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#include <aic7xxx_reg.h>
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#define EISA_DEVICE_ID_ADAPTEC_AIC7770 0x04907770
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#define EISA_DEVICE_ID_ADAPTEC_274x 0x04907771
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#define EISA_DEVICE_ID_ADAPTEC_284xB 0x04907756 /* BIOS enabled */
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#define EISA_DEVICE_ID_ADAPTEC_284x 0x04907757 /* BIOS disabled*/
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#define AHC_EISA_SLOT_OFFSET 0xc00
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#define AHC_EISA_IOSIZE 0x100
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#define INTDEF 0x5cul /* Interrupt Definition Register */
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static int aic7770probe(void);
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static int aic7770_attach(struct eisa_device *e_dev);
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static void aha2840_load_seeprom(struct ahc_softc *ahc);
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static struct eisa_driver ahc_eisa_driver =
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{
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"ahc",
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aic7770probe,
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aic7770_attach,
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/*shutdown*/NULL,
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&ahc_unit
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};
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DATA_SET (eisadriver_set, ahc_eisa_driver);
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static const char *aic7770_match(eisa_id_t type);
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static const char*
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aic7770_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_ADAPTEC_AIC7770:
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return ("Adaptec aic7770 SCSI host adapter");
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break;
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case EISA_DEVICE_ID_ADAPTEC_274x:
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return ("Adaptec 274X SCSI host adapter");
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break;
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case EISA_DEVICE_ID_ADAPTEC_284xB:
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case EISA_DEVICE_ID_ADAPTEC_284x:
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return ("Adaptec 284X 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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aic7770probe(void)
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{
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u_int32_t iobase;
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u_int32_t irq;
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u_int8_t intdef;
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u_int8_t hcntrl;
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struct eisa_device *e_dev;
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int count;
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e_dev = NULL;
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count = 0;
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while ((e_dev = eisa_match_dev(e_dev, aic7770_match))) {
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iobase = (e_dev->ioconf.slot * EISA_SLOT_SIZE)
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+ AHC_EISA_SLOT_OFFSET;
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/* Pause the card preseving the IRQ type */
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hcntrl = inb(iobase + HCNTRL) & IRQMS;
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outb(iobase + HCNTRL, hcntrl | PAUSE);
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eisa_add_iospace(e_dev, iobase, AHC_EISA_IOSIZE, RESVADDR_NONE);
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intdef = inb(INTDEF + iobase);
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irq = intdef & 0xf;
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switch (irq) {
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case 9:
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case 10:
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case 11:
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case 12:
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case 14:
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case 15:
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break;
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default:
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printf("aic7770 at slot %d: illegal "
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"irq setting %d\n", e_dev->ioconf.slot,
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intdef);
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irq = 0;
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break;
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}
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if (irq == 0)
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continue;
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eisa_add_intr(e_dev, irq);
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eisa_registerdev(e_dev, &ahc_eisa_driver);
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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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aic7770_attach(struct eisa_device *e_dev)
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{
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ahc_chip chip;
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struct ahc_softc *ahc;
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resvaddr_t *iospace;
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int unit = e_dev->unit;
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int irq;
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int error;
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if (TAILQ_FIRST(&e_dev->ioconf.irqs) == NULL)
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return (-1);
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irq = TAILQ_FIRST(&e_dev->ioconf.irqs)->irq_no;
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iospace = e_dev->ioconf.ioaddrs.lh_first;
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if (!iospace)
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return -1;
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switch (e_dev->id) {
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case EISA_DEVICE_ID_ADAPTEC_274x:
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case EISA_DEVICE_ID_ADAPTEC_AIC7770:
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chip = AHC_AIC7770|AHC_EISA;
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break;
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case EISA_DEVICE_ID_ADAPTEC_284xB:
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case EISA_DEVICE_ID_ADAPTEC_284x:
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chip = AHC_AIC7770|AHC_VL;
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break;
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default:
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printf("aic7770_attach: Unknown device type!\n");
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return -1;
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break;
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}
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if (!(ahc = ahc_alloc(unit, iospace->addr, NULL,
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chip, AHC_AIC7770_FE, AHC_FNONE, NULL)))
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return -1;
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ahc->channel = 'A';
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ahc->channel_b = 'B';
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/* XXX Should be a child of the EISA bus dma tag */
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error = bus_dma_tag_create(/*parent*/NULL, /*alignment*/0,
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/*boundary*/0,
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/*lowaddr*/BUS_SPACE_MAXADDR_32BIT,
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/*highaddr*/BUS_SPACE_MAXADDR,
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/*filter*/NULL, /*filterarg*/NULL,
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/*maxsize*/MAXBSIZE,
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/*nsegments*/AHC_NSEG,
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/*maxsegsz*/AHC_MAXTRANSFER_SIZE,
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/*flags*/BUS_DMA_ALLOCNOW, &ahc->dmat);
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if (error != 0) {
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printf("%s: Could not allocate DMA tag - error %d\n",
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ahc_name(ahc), error);
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ahc_free(ahc);
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return -1;
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}
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eisa_reg_start(e_dev);
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if (eisa_reg_iospace(e_dev, iospace)) {
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ahc_free(ahc);
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return -1;
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}
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if (ahc_reset(ahc) != 0) {
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ahc_free(ahc);
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return -1;
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}
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/*
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* The IRQMS bit enables level sensitive interrupts. Only allow
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* IRQ sharing if it's set.
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*/
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if (eisa_reg_intr(e_dev, irq, ahc_intr, (void *)ahc, &cam_imask,
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/*shared ==*/ahc->pause & IRQMS)) {
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ahc_free(ahc);
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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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* Tell the user what type of interrupts we're using.
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* usefull for debugging irq problems
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*/
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if (bootverbose) {
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printf("%s: Using %s Interrupts\n",
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ahc_name(ahc),
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ahc->pause & IRQMS ?
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"Level Sensitive" : "Edge Triggered");
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}
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/*
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* Now that we know we own the resources we need, do the
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* card initialization.
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*
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* First, the aic7770 card specific setup.
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*/
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switch (chip & (AHC_EISA|AHC_VL)) {
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case AHC_EISA:
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{
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u_int biosctrl;
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u_int scsiconf;
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u_int scsiconf1;
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#if DEBUG
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int i;
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#endif
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biosctrl = ahc_inb(ahc, HA_274_BIOSCTRL);
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scsiconf = ahc_inb(ahc, SCSICONF);
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scsiconf1 = ahc_inb(ahc, SCSICONF + 1);
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#if DEBUG
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for (i = TARG_SCSIRATE; i <= HA_274_BIOSCTRL; i+=8) {
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printf("0x%x, 0x%x, 0x%x, 0x%x, "
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"0x%x, 0x%x, 0x%x, 0x%x\n",
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ahc_inb(ahc, i),
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ahc_inb(ahc, i+1),
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ahc_inb(ahc, i+2),
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ahc_inb(ahc, i+3),
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ahc_inb(ahc, i+4),
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ahc_inb(ahc, i+5),
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ahc_inb(ahc, i+6),
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ahc_inb(ahc, i+7));
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}
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#endif
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/* Get the primary channel information */
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if ((biosctrl & CHANNEL_B_PRIMARY) != 0)
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ahc->flags |= AHC_CHANNEL_B_PRIMARY;
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if ((biosctrl & BIOSMODE) == BIOSDISABLED) {
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ahc->flags |= AHC_USEDEFAULTS;
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} else {
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if ((ahc->features & AHC_WIDE) != 0) {
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ahc->our_id = scsiconf1 & HWSCSIID;
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if (scsiconf & TERM_ENB)
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ahc->flags |= AHC_TERM_ENB_A;
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} else {
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ahc->our_id = scsiconf & HSCSIID;
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ahc->our_id_b = scsiconf1 & HSCSIID;
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if (scsiconf & TERM_ENB)
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ahc->flags |= AHC_TERM_ENB_A;
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if (scsiconf1 & TERM_ENB)
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ahc->flags |= AHC_TERM_ENB_B;
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}
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}
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/*
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* We have no way to tell, so assume extended
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* translation is enabled.
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*/
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ahc->flags |= AHC_EXTENDED_TRANS_A|AHC_EXTENDED_TRANS_B;
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break;
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}
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case AHC_VL:
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{
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aha2840_load_seeprom(ahc);
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break;
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}
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default:
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break;
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}
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/*
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* See if we have a Rev E or higher aic7770. Anything below a
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* Rev E will have a R/O autoflush disable configuration bit.
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*/
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{
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char *id_string;
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u_int8_t sblkctl;
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u_int8_t sblkctl_orig;
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sblkctl_orig = ahc_inb(ahc, SBLKCTL);
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sblkctl = sblkctl_orig ^ AUTOFLUSHDIS;
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ahc_outb(ahc, SBLKCTL, sblkctl);
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sblkctl = ahc_inb(ahc, SBLKCTL);
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if (sblkctl != sblkctl_orig) {
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id_string = "aic7770 >= Rev E, ";
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/*
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* Ensure autoflush is enabled
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*/
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sblkctl &= ~AUTOFLUSHDIS;
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ahc_outb(ahc, SBLKCTL, sblkctl);
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} else
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id_string = "aic7770 <= Rev C, ";
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printf("%s: %s", ahc_name(ahc), id_string);
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}
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/* Setup the FIFO threshold and the bus off time */
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{
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u_int8_t hostconf = ahc_inb(ahc, HOSTCONF);
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ahc_outb(ahc, BUSSPD, hostconf & DFTHRSH);
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ahc_outb(ahc, BUSTIME, (hostconf << 2) & BOFF);
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}
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/*
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* Generic aic7xxx initialization.
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*/
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if (ahc_init(ahc)) {
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ahc_free(ahc);
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/*
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* The board's IRQ line is not yet enabled so it's safe
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* to release the irq.
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*/
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eisa_release_intr(e_dev, irq, ahc_intr);
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return -1;
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}
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/*
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* Enable the board's BUS drivers
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*/
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ahc_outb(ahc, BCTL, ENABLE);
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/*
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* Enable our interrupt handler.
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*/
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if (eisa_enable_intr(e_dev, irq)) {
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ahc_free(ahc);
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eisa_release_intr(e_dev, irq, ahc_intr);
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return -1;
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}
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/* Attach sub-devices - always succeeds */
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ahc_attach(ahc);
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return 0;
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}
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/*
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* Read the 284x SEEPROM.
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*/
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static void
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aha2840_load_seeprom(struct ahc_softc *ahc)
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{
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struct seeprom_descriptor sd;
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struct seeprom_config sc;
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u_int16_t checksum = 0;
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u_int8_t scsi_conf;
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int have_seeprom;
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sd.sd_tag = ahc->tag;
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sd.sd_bsh = ahc->bsh;
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sd.sd_control_offset = SEECTL_2840;
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sd.sd_status_offset = STATUS_2840;
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sd.sd_dataout_offset = STATUS_2840;
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sd.sd_chip = C46;
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sd.sd_MS = 0;
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sd.sd_RDY = EEPROM_TF;
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sd.sd_CS = CS_2840;
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sd.sd_CK = CK_2840;
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sd.sd_DO = DO_2840;
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sd.sd_DI = DI_2840;
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if (bootverbose)
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printf("%s: Reading SEEPROM...", ahc_name(ahc));
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have_seeprom = read_seeprom(&sd,
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(u_int16_t *)&sc,
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/*start_addr*/0,
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sizeof(sc)/2);
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if (have_seeprom) {
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/* Check checksum */
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int i;
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int maxaddr = (sizeof(sc)/2) - 1;
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u_int16_t *scarray = (u_int16_t *)≻
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for (i = 0; i < maxaddr; i++)
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checksum = checksum + scarray[i];
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if (checksum != sc.checksum) {
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if(bootverbose)
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printf ("checksum error\n");
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have_seeprom = 0;
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} else if (bootverbose) {
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printf("done.\n");
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}
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}
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if (!have_seeprom) {
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if (bootverbose)
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printf("%s: No SEEPROM available\n", ahc_name(ahc));
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ahc->flags |= AHC_USEDEFAULTS;
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} else {
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/*
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* Put the data we've collected down into SRAM
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* where ahc_init will find it.
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*/
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int i;
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int max_targ = (ahc->features & AHC_WIDE) != 0 ? 16 : 8;
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u_int16_t discenable;
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discenable = 0;
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for (i = 0; i < max_targ; i++){
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u_int8_t target_settings;
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target_settings = (sc.device_flags[i] & CFXFER) << 4;
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if (sc.device_flags[i] & CFSYNCH)
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target_settings |= SOFS;
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if (sc.device_flags[i] & CFWIDEB)
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target_settings |= WIDEXFER;
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if (sc.device_flags[i] & CFDISC)
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discenable |= (0x01 << i);
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ahc_outb(ahc, TARG_SCSIRATE + i, target_settings);
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}
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ahc_outb(ahc, DISC_DSB, ~(discenable & 0xff));
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ahc_outb(ahc, DISC_DSB + 1, ~((discenable >> 8) & 0xff));
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ahc->our_id = sc.brtime_id & CFSCSIID;
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scsi_conf = (ahc->our_id & 0x7);
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if (sc.adapter_control & CFSPARITY)
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scsi_conf |= ENSPCHK;
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if (sc.adapter_control & CFRESETB)
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scsi_conf |= RESET_SCSI;
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if (sc.bios_control & CF284XEXTEND)
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ahc->flags |= AHC_EXTENDED_TRANS_A;
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/* Set SCSICONF info */
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ahc_outb(ahc, SCSICONF, scsi_conf);
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if (sc.adapter_control & CF284XSTERM)
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ahc->flags |= AHC_TERM_ENB_A;
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}
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}
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#endif /* NEISA > 0 */
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