sys/arch/evbmips/gdium/gdium_genfb.c

   1 /*      $NetBSD: gdium_genfb.c,v 1.2 2009/08/06 16:37:01 matt 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: gdium_genfb.c,v 1.2 2009/08/06 16:37:01 matt Exp $");
  32
  33 #include <sys/param.h>
  34 #include <sys/buf.h>
  35 #include <sys/conf.h>
  36 #include <sys/device.h>
  37 #include <sys/ioctl.h>
  38 #include <sys/kernel.h>
  39 #include <sys/malloc.h>
  40 #include <sys/systm.h>
  41
  42 #include <machine/bus.h>
  43
  44 #include <dev/wscons/wsconsio.h>
  45 #include <dev/wscons/wsdisplayvar.h>
  46 #include <dev/rasops/rasops.h>
  47 #include <dev/wsfont/wsfont.h>
  48 #include <dev/wscons/wsdisplay_vconsvar.h>
  49
  50 #include <mips/bonito/bonitoreg.h>
  51 #include <evbmips/gdium/gdiumvar.h>
  52 #include <dev/pci/pcireg.h>
  53 #include <dev/pci/pcivar.h>
  54
  55 #include "wsdisplay.h"
  56
  57 /* we need a wsdisplay to do anything halfway useful */
  58 #if NWSDISPLAY > 0
  59
  60 static struct vcons_screen gdium_console_screen;
  61
  62 static struct wsscreen_descr gdium_stdscreen = {
  63         .name = "std",
  64 };
  65
  66 int
  67 gdium_cnattach(struct gdium_config *gc)
  68 {
  69         struct rasops_info * const ri = &gdium_console_screen.scr_ri;
  70         long defattr;
  71         pcireg_t reg;
  72
  73         wsfont_init();
  74
  75         /* set up rasops */
  76         ri->ri_width = 1024;
  77         ri->ri_height = 600;
  78         ri->ri_depth = 16;
  79         ri->ri_stride = 0x800;
  80
  81         /* read the mapping register for the frame buffer */
  82         reg = pci_conf_read(&gc->gc_pc, pci_make_tag(&gc->gc_pc, 0, 14, 0),
  83             PCI_MAPREG_START);
  84
  85         ri->ri_bits = (char *)MIPS_PHYS_TO_KSEG1(BONITO_PCILO_BASE + reg);
  86         ri->ri_flg = RI_CENTER;
  87
  88         memset(ri->ri_bits, 0, 0x200000);
  89
  90         /* use as much of the screen as the font permits */
  91         rasops_init(ri, 30, 80);
  92
  93         rasops_reconfig(ri, ri->ri_height / ri->ri_font->fontheight,
  94             ri->ri_width / ri->ri_font->fontwidth);
  95
  96         gdium_stdscreen.nrows = ri->ri_rows;
  97         gdium_stdscreen.ncols = ri->ri_cols;
  98         gdium_stdscreen.textops = &ri->ri_ops;
  99         gdium_stdscreen.capabilities = ri->ri_caps;
 100
 101         ri->ri_ops.allocattr(ri, 0, ri->ri_rows - 1, 0, &defattr);
 102
 103         wsdisplay_preattach(&gdium_stdscreen, ri, 0, 0, defattr);
 104
 105         return 0;
 106 }
 107 #else   /* NWSDISPLAY > 0 */
 108 int
 109 gdium_cnattach(struct gdium_config *gc)
 110 {
 111         return -1;
 112 }
 113 #endif