190 lines
5.5 KiB
C
190 lines
5.5 KiB
C
/* $NetBSD: aha284x.c,v 1.2 1996/01/13 02:06:30 thorpej Exp $ */
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/*
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* Copyright (c) 1996 Michael Graff. 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, 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Michael Graff.
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* 4. 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 ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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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 <sys/device.h>
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#include <scsi/scsi_all.h>
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#include <scsi/scsiconf.h>
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#include <dev/isa/isavar.h>
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#include <dev/ic/aic7xxxvar.h>
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#include <machine/pio.h>
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static int ahe_probe __P((struct device *, void *, void *));
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static void ahe_attach __P((struct device *, struct device *, void *));
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struct cfdriver ahecd = {
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NULL, /* devices found */
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"ahe", /* device name */
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ahe_probe, /* match routine */
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ahe_attach, /* attach routine */
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DV_DULL, /* device class */
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sizeof(struct ahc_softc), /* size of private dev data */
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};
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/*
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* shouldn't this be in aic7xxxvar.h?
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*/
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int ahcintr __P((void *));
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/*
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* Standard EISA Host ID regs (Offset from slot base)
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* These seem to work on the aha284x as well (VLB card)
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*/
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#define HID0 0xC80 /* 0,1: msb of ID2, 2-7: ID1 */
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#define HID1 0xC81 /* 0-4: ID3, 5-7: LSB ID2 */
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#define HID2 0xC82 /* product */
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#define HID3 0xC83 /* firmware revision */
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#define CHAR1(B1,B2) (((B1>>2) & 0x1F) | '@')
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#define CHAR2(B1,B2) (((B1<<3) & 0x18) | ((B2>>5) & 0x7)|'@')
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#define CHAR3(B1,B2) ((B2 & 0x1F) | '@')
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typedef struct {
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ahc_type type;
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unsigned char id; /* The Last EISA Host ID reg */
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} aic7770_sig;
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aic7770_sig valid_ids[] = {
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/* Entries of other tested adaptors should be added here */
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{ AHC_274, 0x70 }, /*aic7770 on Motherboard*/
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{ AHC_274, 0x71 }, /*274x*/
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{ AHC_284, 0x56 }, /*284x, BIOS enabled*/
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{ AHC_284, 0x57 } /*284x, BIOS disabled*/
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};
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int
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ahe_probe(parent, match, aux)
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struct device *parent;
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void *match, *aux;
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{
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struct ahc_softc *ahc = match;
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struct isa_attach_args *ia = aux;
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char intdef;
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int iobase;
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u_char sig_id[4];
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int i;
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#ifdef NEWCONFIG
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if (ia->ia_iobase == IOBASEUNK)
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return 0;
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#endif
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/*
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* Make the offsets the same as for EISA
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*
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* I have NO idea why the values in aic7xxx.c are all 0xc00 too
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* high, but this hack fixes it. This is the same hack that's in
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* the 294x pci code.
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*/
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iobase = ia->ia_iobase - 0xc00;
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for (i = 0; i < sizeof(sig_id); i++) {
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/*
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* An outb is required to prime these
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* registers on VL cards
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*/
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outb(iobase + HID0, HID0 + i);
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sig_id[i] = inb(iobase + HID0 + i);
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}
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if (sig_id[0] == 0xff)
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return 0;
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if (CHAR1(sig_id[0], sig_id[1]) != 'A'
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|| CHAR2(sig_id[0], sig_id[1]) != 'D'
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|| CHAR3(sig_id[0], sig_id[1]) != 'P'
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|| sig_id[2] != 0x77)
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return 0;
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ahc->type = 0;
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for (i = 0; i < sizeof(valid_ids)/sizeof(aic7770_sig); i++)
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if (sig_id[3] == valid_ids[i].id) {
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ahc->type = valid_ids[i].type;
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break;
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}
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if (ahc->type == 0)
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printf("%s: Unknown board type 0x%02x\n",
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ahc->sc_dev.dv_xname, sig_id[3]);
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if (ahcprobe(ahc, iobase) == 0)
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return 0;
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/*
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* set up some other isa variables and make certain the irq the
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* card is set at matches the one in the configuration file,
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* it is wa defined there
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*/
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ia->ia_iosize = 0x100; /* address range for the card */
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if (ia->ia_irq == IRQUNK)
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ia->ia_irq = ahc->sc_irq; /* probed from the card */
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else
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if (ia->ia_irq != ahc->sc_irq) {
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printf("%s: irq mismatch; kernel configured %d != board configured %d\n",
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ahc->sc_dev.dv_xname, ia->ia_irq, ahc->sc_irq);
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return 0;
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}
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/* Must be ok... */
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return 1;
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}
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void
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ahe_attach(parent, self, aux)
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struct device *parent, *self;
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void *aux;
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{
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struct ahc_softc *ahc = (void *)self;
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struct isa_attach_args *ia = aux;
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#ifdef NEWCONFIG
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isa_establish(&ahc->sc_id, &ahc->sc_dev);
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#endif
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ahc->sc_ih = isa_intr_establish(ia->ia_irq, IST_EDGE, IPL_BIO,
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ahcintr, ahc);
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/*
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* attach the devices on the bus
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*/
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ahcattach(ahc);
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}
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