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pci_machdep.c revision 1.3 
      1 /*	$NetBSD: pci_machdep.c,v 1.3 1995/11/23 02:38:07 cgd Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Carnegie-Mellon University.
      5  * All rights reserved.
      6  *
      7  * Author: Chris G. Demetriou
      8  *
      9  * Permission to use, copy, modify and distribute this software and
     10  * its documentation is hereby granted, provided that both the copyright
     11  * notice and this permission notice appear in all copies of the
     12  * software, derivative works or modified versions, and any portions
     13  * thereof, and that both notices appear in supporting documentation.
     14  *
     15  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
     16  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND
     17  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
     18  *
     19  * Carnegie Mellon requests users of this software to return to
     20  *
     21  *  Software Distribution Coordinator  or  Software.Distribution (at) CS.CMU.EDU
     22  *  School of Computer Science
     23  *  Carnegie Mellon University
     24  *  Pittsburgh PA 15213-3890
     25  *
     26  * any improvements or extensions that they make and grant Carnegie the
     27  * rights to redistribute these changes.
     28  */
     29 
     30 /*
     31  * Machine-specific functions for PCI autoconfiguration.
     32  */
     33 
     34 #include <sys/types.h>
     35 #include <sys/param.h>
     36 #include <sys/time.h>
     37 #include <sys/systm.h>
     38 #include <sys/errno.h>
     39 #include <sys/device.h>
     40 
     41 #include <vm/vm.h>
     42 
     43 #include <dev/isa/isavar.h>
     44 #include <dev/pci/pcireg.h>
     45 #include <dev/pci/pcivar.h>
     46 #include <dev/pci/pcidevs.h>
     47 
     48 #include "pcivga.h"
     49 #if NPCIVGA
     50 #include <alpha/pci/pcivgavar.h>
     51 #endif
     52 
     53 #include "tga.h"
     54 #if NTGA
     55 #include <alpha/pci/tgavar.h>
     56 #endif
     57 
     58 void
     59 pci_display_console(pcf, pcfa, pmf, pmfa, ppf, ppfa, bus, device, function)
     60 	__const struct pci_conf_fns *pcf;
     61 	__const struct pci_mem_fns *pmf;
     62 	__const struct pci_pio_fns *ppf;
     63 	void *pcfa, *pmfa, *ppfa;
     64 	pci_bus_t bus;
     65 	pci_device_t device;
     66 	pci_function_t function;
     67 {
     68 	pci_conftag_t tag;
     69 	pci_confreg_t id, class;
     70 
     71 	tag = PCI_MAKE_TAG(bus, device, function);
     72 	id = PCI_CONF_READ(pcf, pcfa, tag, PCI_ID_REG);
     73 	if (id == 0 || id == 0xffffffff)
     74 		panic("pci_display_console: no device at %d/%d/%d",
     75 		    bus, device, function);
     76 	class = PCI_CONF_READ(pcf, pcfa, tag, PCI_CLASS_REG);
     77 
     78 #if NPCIVGA
     79 	if (DEVICE_IS_PCIVGA(class, id)) {
     80 		pcivga_console(pcf, pcfa, pmf, pmfa, ppf, ppfa, bus,
     81 		    device, function);
     82 		return;
     83 	}
     84 #endif
     85 
     86 #if NTGA
     87 	if (DEVICE_IS_TGA(class, id)) {
     88 		tga_console(pcf, pcfa, pmf, pmfa, ppf, ppfa, bus,
     89 		    device, function);
     90 		return;
     91 	}
     92 #endif
     93 
     94 	panic("pci_display_console: unconfigured device at %d/%d/%d",
     95 		    bus, device, function);
     96 }
     97