252 lines
7.0 KiB
C
252 lines
7.0 KiB
C
/* $NetBSD: eisa.c,v 1.36 2005/02/27 00:26:59 perry 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/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: eisa.c,v 1.36 2005/02/27 00:26:59 perry Exp $");
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#include "opt_eisaverbose.h"
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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 <machine/bus.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 "locators.h"
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static int eisamatch(struct device *, struct cfdata *, void *);
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static void eisaattach(struct device *, struct device *, void *);
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CFATTACH_DECL(eisa, sizeof(struct device),
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eisamatch, eisaattach, NULL, NULL);
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static int eisasubmatch(struct device *, struct cfdata *,
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const locdesc_t *, void *);
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static int eisaprint(void *, const char *);
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static void eisa_devinfo(const char *, char *, size_t);
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static int
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eisamatch(struct device *parent, struct cfdata *cf, void *aux)
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{
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/* XXX check other indicators */
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return (1);
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}
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static int
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eisaprint(void *aux, const char *pnp)
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{
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struct eisa_attach_args *ea = aux;
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char devinfo[256];
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if (pnp) {
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eisa_devinfo(ea->ea_idstring, devinfo, sizeof(devinfo));
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aprint_normal("%s at %s", devinfo, pnp);
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}
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aprint_normal(" slot %d", ea->ea_slot);
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return (UNCONF);
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}
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static int
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eisasubmatch(struct device *parent, struct cfdata *cf,
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const locdesc_t * ldesc, void *aux)
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{
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if (cf->cf_loc[EISACF_SLOT] != EISACF_SLOT_DEFAULT &&
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cf->cf_loc[EISACF_SLOT] != ldesc->locs[EISACF_SLOT])
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return (0);
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return (config_match(parent, cf, aux));
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}
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static void
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eisaattach(struct device *parent, struct device *self, void *aux)
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{
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struct eisabus_attach_args *eba = aux;
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bus_space_tag_t iot, memt;
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bus_dma_tag_t dmat;
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eisa_chipset_tag_t ec;
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int slot, maxnslots;
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eisa_attach_hook(parent, self, eba);
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printf("\n");
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iot = eba->eba_iot;
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memt = eba->eba_memt;
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ec = eba->eba_ec;
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dmat = eba->eba_dmat;
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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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maxnslots = eisa_maxslots(ec);
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for (slot = 1; slot < maxnslots; slot++) {
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struct eisa_attach_args ea;
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u_int slotaddr;
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bus_space_handle_t slotioh;
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int i;
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int help[2];
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locdesc_t *ldesc = (void *)help; /* XXX */
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ea.ea_iot = iot;
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ea.ea_memt = memt;
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ea.ea_ec = ec;
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ea.ea_dmat = dmat;
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ea.ea_slot = slot;
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slotaddr = EISA_SLOT_ADDR(slot);
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/*
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* Get a mapping for the whole slot-specific address
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* space. If we can't, assume nothing's there but warn
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* about it.
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*/
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if (bus_space_map(iot, slotaddr, EISA_SLOT_SIZE, 0, &slotioh)) {
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printf("%s: can't map I/O space for slot %d\n",
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self->dv_xname, slot);
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continue;
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}
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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] = bus_space_read_1(iot, slotioh,
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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("no device at %s slot %d\n", self->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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bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE);
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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 not configured by BIOS?\n",
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self->dv_xname, slot);
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bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE);
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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] = bus_space_read_1(iot, slotioh,
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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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/* We no longer need the I/O handle; free it. */
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bus_space_unmap(iot, slotioh, EISA_SLOT_SIZE);
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ldesc->len = 1;
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ldesc->locs[EISACF_SLOT] = slot;
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/* Attach matching device. */
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config_found_sm_loc(self, "eisa", ldesc, &ea,
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eisaprint, eisasubmatch);
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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 /* EISAVEBSOSE */
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void
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eisa_devinfo(const char *id, char *cp, size_t l)
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{
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#ifdef EISAVERBOSE
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const char *name;
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const struct eisa_knowndev *edp;
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int match, onlyvendor;
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onlyvendor = 0;
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name = NULL;
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/* find the device in the table, if possible. */
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for (edp = eisa_knowndevs; edp->id != NULL; edp++) {
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if ((edp->flags & EISA_KNOWNDEV_NOPROD) != 0)
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match = (strncmp(edp->id, id, 3) == 0);
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else
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match = (strcmp(edp->id, id) == 0);
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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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}
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if (name == NULL)
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snprintf(cp, l, "unknown device %s", id);
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else if (onlyvendor)
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snprintf(cp, l, "unknown %s device %s", name, id);
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else
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snprintf(cp, l, "%s", name);
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#else /* EISAVERBOSE */
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snprintf(cp, l, "device %s", id);
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#endif /* EISAVERBOSE */
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}
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