vga_isa.c

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    1 /* $NetBSD: vga_isa.c,v 1.15 2002/10/02 03:10:50 thorpej Exp $ */
    2 
    3 /*
    4  * Copyright (c) 1995, 1996 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@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 #include <sys/cdefs.h>
   31 __KERNEL_RCSID(0, "$NetBSD: vga_isa.c,v 1.15 2002/10/02 03:10:50 thorpej Exp $");
   32 
   33 #include <sys/param.h>
   34 #include <sys/systm.h>
   35 #include <sys/kernel.h>
   36 #include <sys/device.h>
   37 #include <sys/malloc.h>
   38 
   39 #include <dev/isa/isavar.h>
   40 
   41 #include <dev/ic/mc6845reg.h>
   42 #include <dev/ic/pcdisplayvar.h>
   43 #include <dev/ic/vgareg.h>
   44 #include <dev/ic/vgavar.h>
   45 #include <dev/isa/vga_isavar.h>
   46 
   47 #include <dev/wscons/wsconsio.h>
   48 #include <dev/wscons/wsdisplayvar.h>
   49 
   50 int     vga_isa_match(struct device *, struct cfdata *, void *);
   51 void    vga_isa_attach(struct device *, struct device *, void *);
   52 
   53 CFATTACH_DECL(vga_isa, sizeof(struct vga_softc),
   54     vga_isa_match, vga_isa_attach, NULL, NULL);
   55 
   56 int
   57 vga_isa_match(struct device *parent, struct cfdata *match, void *aux)
   58 {
   59         struct isa_attach_args *ia = aux;
   60 
   61         if (ISA_DIRECT_CONFIG(ia))
   62                 return (0);
   63 
   64         /* If values are hardwired to something that they can't be, punt. */
   65         if (ia->ia_nio < 1 ||
   66             (ia->ia_io[0].ir_addr != ISACF_PORT_DEFAULT &&
   67              ia->ia_io[0].ir_addr != 0x3b0))
   68                 return (0);
   69 
   70         if (ia->ia_niomem < 1 ||
   71             (ia->ia_iomem[0].ir_addr != ISACF_IOMEM_DEFAULT &&
   72              ia->ia_iomem[0].ir_addr != 0xa0000))
   73                 return (0);
   74         if (ia->ia_iomem[0].ir_size != 0 &&
   75             ia->ia_iomem[0].ir_size != 0x20000)
   76                 return (0);
   77 
   78         if (ia->ia_nirq > 0 &&
   79             ia->ia_irq[0].ir_irq != ISACF_IRQ_DEFAULT)
   80                 return (0);
   81 
   82         if (ia->ia_ndrq > 0 &&
   83             ia->ia_drq[0].ir_drq != ISACF_DRQ_DEFAULT)
   84                 return (0);
   85 
   86         if (!vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA) &&
   87             !vga_common_probe(ia->ia_iot, ia->ia_memt))
   88                 return (0);
   89 
   90         ia->ia_nio = 1;
   91         ia->ia_io[0].ir_addr = 0x3b0;   /* XXX mono 0x3b0 color 0x3c0 */
   92         ia->ia_io[0].ir_size = 0x30;    /* XXX 0x20 */
   93 
   94         ia->ia_niomem = 1;
   95         ia->ia_iomem[0].ir_addr = 0xa0000;
   96         ia->ia_iomem[0].ir_size = 0x20000;
   97 
   98         ia->ia_nirq = 0;
   99         ia->ia_ndrq = 0;
  100 
  101         return (2);     /* more than generic pcdisplay */
  102 }
  103 
  104 void
  105 vga_isa_attach(struct device *parent, struct device *self, void *aux)
  106 {
  107         struct vga_softc *sc = (void *) self;
  108         struct isa_attach_args *ia = aux;
  109 
  110         printf("\n");
  111 
  112         vga_common_attach(sc, ia->ia_iot, ia->ia_memt, WSDISPLAY_TYPE_ISAVGA,
  113             0, NULL);
  114 }
  115 
  116 int
  117 vga_isa_cnattach(bus_space_tag_t iot, bus_space_tag_t memt)
  118 {
  119 
  120         return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1));
  121 }

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FreeBSD/Linux Kernel Cross Reference sys/dev/isa/vga_isa.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/isa/vga_isa.c