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/* $OpenBSD: pci_machdep.c,v 1.4 1996/07/29 23:00:43 niklas Exp $ */
/* $NetBSD: pci_machdep.c,v 1.5 1996/04/12 06:08:49 cgd Exp $ */
/*
* Copyright (c) 1995, 1996 Carnegie-Mellon University.
* All rights reserved.
*
* Author: Chris G. Demetriou
*
* Permission to use, copy, modify and distribute this software and
* its documentation is hereby granted, provided that both the copyright
* notice and this permission notice appear in all copies of the
* software, derivative works or modified versions, and any portions
* thereof, and that both notices appear in supporting documentation.
*
* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
*
* Carnegie Mellon requests users of this software to return to
*
* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
* School of Computer Science
* Carnegie Mellon University
* Pittsburgh PA 15213-3890
*
* any improvements or extensions that they make and grant Carnegie the
* rights to redistribute these changes.
*/
/*
* Machine-specific functions for PCI autoconfiguration.
*/
#include <sys/types.h>
#include <sys/param.h>
#include <sys/time.h>
#include <sys/systm.h>
#include <sys/errno.h>
#include <sys/device.h>
#include <vm/vm.h>
#include <dev/isa/isavar.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <dev/pci/pcidevs.h>
#include "pcivga.h"
#if NPCIVGA
#include <alpha/pci/pcivgavar.h>
#endif
#include "tga.h"
#if NTGA
#include <alpha/pci/tgavar.h>
#endif
void
pci_display_console(bc, pc, bus, device, function)
bus_chipset_tag_t bc;
pci_chipset_tag_t pc;
int bus, device, function;
{
pcitag_t tag;
pcireg_t id, class;
int match, nmatch;
void (*fn) __P((bus_chipset_tag_t, pci_chipset_tag_t, int, int, int));
tag = pci_make_tag(pc, bus, device, function);
id = pci_conf_read(pc, tag, PCI_ID_REG);
if (id == 0 || id == 0xffffffff)
panic("pci_display_console: no device at %d/%d/%d",
bus, device, function);
class = pci_conf_read(pc, tag, PCI_CLASS_REG);
match = 0;
fn = NULL;
#if NPCIVGA
nmatch = DEVICE_IS_PCIVGA(class, id);
if (nmatch > match) {
match = nmatch;
fn = pcivga_console;
}
#endif
#if NTGA
nmatch = DEVICE_IS_TGA(class, id);
if (nmatch > match) {
match = nmatch;
fn = tga_console;
}
#endif
if (fn != NULL)
(*fn)(bc, pc, bus, device, function);
else
panic("pci_display_console: unconfigured device at %d/%d/%d",
bus, device, function);
}
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