Line data    Source code

       1             : /* $OpenBSD: vga_isa.c,v 1.10 2015/07/18 00:48:05 miod Exp $ */
       2             : /* $NetBSD: vga_isa.c,v 1.3 1998/06/12 18:45:48 drochner Exp $ */
       3             : 
       4             : /*
       5             :  * Copyright (c) 1995, 1996 Carnegie-Mellon University.
       6             :  * All rights reserved.
       7             :  *
       8             :  * Author: Chris G. Demetriou
       9             :  * 
      10             :  * Permission to use, copy, modify and distribute this software and
      11             :  * its documentation is hereby granted, provided that both the copyright
      12             :  * notice and this permission notice appear in all copies of the
      13             :  * software, derivative works or modified versions, and any portions
      14             :  * thereof, and that both notices appear in supporting documentation.
      15             :  * 
      16             :  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS" 
      17             :  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND 
      18             :  * FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
      19             :  * 
      20             :  * Carnegie Mellon requests users of this software to return to
      21             :  *
      22             :  *  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
      23             :  *  School of Computer Science
      24             :  *  Carnegie Mellon University
      25             :  *  Pittsburgh PA 15213-3890
      26             :  *
      27             :  * any improvements or extensions that they make and grant Carnegie the
      28             :  * rights to redistribute these changes.
      29             :  */
      30             : 
      31             : #include <sys/param.h>
      32             : #include <sys/systm.h>
      33             : #include <sys/kernel.h>
      34             : #include <sys/device.h>
      35             : #include <sys/malloc.h>
      36             : 
      37             : #include <dev/isa/isavar.h>
      38             : 
      39             : #include <dev/ic/mc6845reg.h>
      40             : #include <dev/ic/pcdisplayvar.h>
      41             : #include <dev/ic/vgareg.h>
      42             : 
      43             : #include <dev/wscons/wsconsio.h>
      44             : #include <dev/wscons/wsdisplayvar.h>
      45             : 
      46             : #include <dev/ic/vgavar.h>
      47             : #include <dev/isa/vga_isavar.h>
      48             : 
      49             : struct vga_isa_softc {
      50             :         struct device sc_dev; 
      51             : #if 0
      52             :         struct vga_config *sc_vc;       /* VGA configuration */
      53             : #endif
      54             : };
      55             : 
      56             : int     vga_isa_match(struct device *, void *, void *);
      57             : void    vga_isa_attach(struct device *, struct device *, void *);
      58             : 
      59             : struct cfattach vga_isa_ca = {
      60             :         sizeof(struct vga_isa_softc), vga_isa_match, vga_isa_attach,
      61             : };
      62             : 
      63             : int
      64           0 : vga_isa_match(struct device *parent, void *match, void *aux)
      65             : {
      66           0 :         struct isa_attach_args *ia = aux;
      67             : 
      68             :         /* If values are hardwired to something that they can't be, punt. */
      69           0 :         if ((ia->ia_iobase != IOBASEUNK && ia->ia_iobase != 0x3b0) ||
      70             :             /* ia->ia_iosize != 0 || XXX isa.c */
      71           0 :             (ia->ia_maddr != MADDRUNK && ia->ia_maddr != 0xa0000) ||
      72           0 :             (ia->ia_msize != 0 && ia->ia_msize != 0x20000) ||
      73           0 :             ia->ia_irq != IRQUNK || ia->ia_drq != DRQUNK)
      74           0 :                 return (0);
      75             : 
      76           0 :         if (!vga_is_console(ia->ia_iot, WSDISPLAY_TYPE_ISAVGA) &&
      77           0 :             !vga_common_probe(ia->ia_iot, ia->ia_memt))
      78           0 :                 return (0);
      79             : 
      80           0 :         ia->ia_iobase = 0x3b0;       /* XXX mono 0x3b0 color 0x3c0 */
      81           0 :         ia->ia_iosize = 0x30;        /* XXX 0x20 */
      82           0 :         ia->ia_maddr = 0xa0000;
      83           0 :         ia->ia_msize = 0x20000;
      84           0 :         return (2);     /* more than generic pcdisplay */
      85           0 : }
      86             : 
      87             : void
      88           0 : vga_isa_attach(struct device *parent, struct device *self, void *aux)
      89             : {
      90           0 :         struct isa_attach_args *ia = aux;
      91             : #if 0
      92             :         struct vga_isa_softc *sc = (struct vga_isa_softc *)self;
      93             : #endif
      94             : 
      95           0 :         printf("\n");
      96             : 
      97           0 :         vga_common_attach(self, ia->ia_iot, ia->ia_memt,
      98             :                           WSDISPLAY_TYPE_ISAVGA);
      99           0 : }
     100             : 
     101             : int
     102           0 : vga_isa_cnattach(bus_space_tag_t iot, bus_space_tag_t memt)
     103             : {
     104           0 :         return (vga_cnattach(iot, memt, WSDISPLAY_TYPE_ISAVGA, 1));
     105             : }