106 lines
2.8 KiB
C
106 lines
2.8 KiB
C
/* $NetBSD: pci_machdep.c,v 1.13 1998/05/28 16:59:32 drochner Exp $ */
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/*
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* Copyright (c) 1995, 1996 Carnegie-Mellon University.
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* All rights reserved.
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*
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* Author: Chris G. Demetriou
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*
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* Permission to use, copy, modify and distribute this software and
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* its documentation is hereby granted, provided that both the copyright
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* notice and this permission notice appear in all copies of the
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* software, derivative works or modified versions, and any portions
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* thereof, and that both notices appear in supporting documentation.
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*
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* CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
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* CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
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* FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
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*
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* Carnegie Mellon requests users of this software to return to
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*
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* Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
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* School of Computer Science
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* Carnegie Mellon University
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* Pittsburgh PA 15213-3890
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*
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* any improvements or extensions that they make and grant Carnegie the
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* rights to redistribute these changes.
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*/
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/*
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* Machine-specific functions for PCI autoconfiguration.
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*/
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#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
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__KERNEL_RCSID(0, "$NetBSD: pci_machdep.c,v 1.13 1998/05/28 16:59:32 drochner Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/time.h>
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#include <sys/systm.h>
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#include <sys/errno.h>
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#include <sys/device.h>
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#include <vm/vm.h>
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#include <dev/isa/isavar.h>
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#include <dev/pci/pcireg.h>
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#include <dev/pci/pcivar.h>
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#include <dev/pci/pcidevs.h>
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#include "vga_pci.h"
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#if NVGA_PCI
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#include <dev/ic/mc6845reg.h>
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#include <dev/ic/pcdisplayvar.h>
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#include <dev/pci/vga_pcivar.h>
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#endif
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#include "tga.h"
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#if NTGA
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#include <dev/pci/tgavar.h>
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#endif
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void
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pci_display_console(iot, memt, pc, bus, device, function)
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bus_space_tag_t iot, memt;
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pci_chipset_tag_t pc;
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int bus, device, function;
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{
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pcitag_t tag;
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pcireg_t id, class;
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int match, nmatch;
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int (*fn) __P((bus_space_tag_t, bus_space_tag_t, pci_chipset_tag_t,
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int, int, int));
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tag = pci_make_tag(pc, bus, device, function);
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id = pci_conf_read(pc, tag, PCI_ID_REG);
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if (id == 0 || id == 0xffffffff)
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panic("pci_display_console: no device at %d/%d/%d",
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bus, device, function);
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class = pci_conf_read(pc, tag, PCI_CLASS_REG);
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nmatch = match = 0; /* XXX really only if we've got FBs configured */
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fn = NULL;
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#if NVGA_PCI
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nmatch = DEVICE_IS_VGA_PCI(class, id);
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if (nmatch > match) {
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match = nmatch;
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fn = vga_pci_cnattach;
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}
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#endif
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#if NTGA
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nmatch = DEVICE_IS_TGA(class, id);
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if (nmatch > match) {
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match = nmatch;
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fn = tga_cnattach;
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}
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#endif
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if (fn != NULL)
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(*fn)(iot, memt, pc, bus, device, function);
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else
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panic("pci_display_console: unconfigured device at %d/%d/%d",
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bus, device, function);
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}
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