238 lines
6.4 KiB
C
238 lines
6.4 KiB
C
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/* $NetBSD: eisa.c,v 1.1 1996/02/27 00:21:00 cgd Exp $ */
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/*
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* Copyright (c) 1995, 1996 Christopher G. Demetriou
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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, 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 Christopher G. Demetriou
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* for the NetBSD Project.
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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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/*
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* EISA Bus device
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*
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* Makes sure an EISA bus is present, and finds and attaches devices
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* living on it.
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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/device.h>
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#include <dev/eisa/eisareg.h>
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#include <dev/eisa/eisavar.h>
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#include <dev/eisa/eisadevs.h>
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#include <machine/pio.h> /* XXX shouldn't use inb directly */
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struct eisa_softc {
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struct device sc_dev; /* this is it, for now */
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};
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int eisamatch __P((struct device *, void *, void *));
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void eisaattach __P((struct device *, struct device *, void *));
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struct cfdriver eisacd = {
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NULL, "eisa", eisamatch, eisaattach, DV_DULL, sizeof(struct eisa_softc)
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};
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int eisasubmatch __P((struct device *, void *, void *));
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int eisaprint __P((void *, char *));
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void eisa_devinfo __P((const char *, char *));
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int
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eisamatch(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 cfdata *cf = match;
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struct eisabus_attach_args *eba = aux;
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if (strcmp(eba->eba_busname, cf->cf_driver->cd_name))
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return (0);
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/* XXX check other indicators */
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return (1);
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}
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int
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eisaprint(aux, eisa)
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void *aux;
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char *eisa;
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{
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register struct eisa_attach_args *ea = aux;
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printf(" slot %d", ea->ea_slot);
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return (UNCONF);
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}
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int
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eisasubmatch(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 cfdata *cf = match;
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struct eisa_attach_args *ea = aux;
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if (cf->eisacf_slot != EISA_UNKNOWN_SLOT &&
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cf->eisacf_slot != ea->ea_slot)
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return 0;
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return ((*cf->cf_driver->cd_match)(parent, match, aux));
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}
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void
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eisaattach(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 eisa_softc *sc = (struct eisa_softc *)self;
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int slot;
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printf("\n");
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/*
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* Search for and attach subdevices.
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*
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* Slot 0 is the "motherboard" slot, and the code attaching
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* the EISA bus should have already attached an ISA bus there.
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*/
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for (slot = 1; slot < EISA_MAX_SLOT; slot++) {
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struct eisa_attach_args ea;
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struct cfdata *cf;
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u_int slotaddr;
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int i;
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ea.ea_slot = slot;
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slotaddr = EISA_SLOT_ADDR(slot);
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#if 0
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printf("%s slot %d: at 0x%x\n", sc->sc_dev.dv_xname, slot,
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slotaddr);
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#endif
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/* Get the vendor ID bytes */
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for (i = 0; i < EISA_NVIDREGS; i++)
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ea.ea_vid[i] = inb(slotaddr + EISA_SLOTOFF_VID + i);
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/* Check for device existence */
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if (EISA_VENDID_NODEV(ea.ea_vid)) {
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#if 0
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printf("%s slot %d: no device\n", sc->sc_dev.dv_xname,
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slot);
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printf("\t(0x%x, 0x%x)\n", ea.ea_vid[0],
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ea.ea_vid[1]);
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#endif
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continue;
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}
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/* And check that the firmware didn't biff something badly */
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if (EISA_VENDID_IDDELAY(ea.ea_vid)) {
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printf("%s slot %d: slot not configured by BIOS?\n",
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self->dv_xname, slot);
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continue;
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}
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/* Get the product ID bytes */
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for (i = 0; i < EISA_NPIDREGS; i++)
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ea.ea_pid[i] = inb(slotaddr + EISA_SLOTOFF_PID + i);
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/* Create the ID string from the vendor and product IDs */
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ea.ea_idstring[0] = EISA_VENDID_0(ea.ea_vid);
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ea.ea_idstring[1] = EISA_VENDID_1(ea.ea_vid);
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ea.ea_idstring[2] = EISA_VENDID_2(ea.ea_vid);
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ea.ea_idstring[3] = EISA_PRODID_0(ea.ea_pid);
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ea.ea_idstring[4] = EISA_PRODID_1(ea.ea_pid);
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ea.ea_idstring[5] = EISA_PRODID_2(ea.ea_pid);
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ea.ea_idstring[6] = EISA_PRODID_3(ea.ea_pid);
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ea.ea_idstring[7] = '\0'; /* sanity */
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/* Go hunt for devices that match. */
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if ((cf = config_search(eisasubmatch, self, &ea)) != NULL)
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config_attach(self, cf, &ea, eisaprint);
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else {
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char devinfo[256];
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eisa_devinfo(ea.ea_idstring, devinfo);
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printf("%s slot %d: %s not configured\n",
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self->dv_xname, slot, devinfo);
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}
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}
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}
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#ifdef EISAVERBOSE
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/*
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* Descriptions of of known vendors and devices ("products").
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*/
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struct eisa_knowndev {
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int flags;
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const char *id, *name;
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};
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#define EISA_KNOWNDEV_NOPROD 0x01 /* match on vendor only */
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#include <dev/eisa/eisadevs_data.h>
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#endif /* EISAVERBOSE */
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void
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eisa_devinfo(id, cp)
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const char *id;
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char *cp;
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{
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const char *name;
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int onlyvendor;
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#ifdef EISAVERBOSE
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struct eisa_knowndev *edp;
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int match;
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#endif
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onlyvendor = 0;
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name = NULL;
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#ifdef EISAVERBOSE
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/* find the device in the table, if possible. */
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edp = eisa_knowndevs;
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while (edp->id != NULL) {
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/* check this entry for a match */
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if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0)
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match = !strncmp(edp->id, id, 3);
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else
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match = !strcmp(edp->id, id);
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if (match) {
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name = edp->name;
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onlyvendor = (edp->flags & EISA_KNOWNDEV_NOPROD) != 0;
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break;
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}
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edp++;
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}
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#endif
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if (name == NULL)
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cp += sprintf(cp, "unknown device %s", id);
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else if (onlyvendor)
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cp += sprintf(cp, "unknown %s device %s", name, id);
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else
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cp += sprintf(cp, "%s", name);
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}
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