mirror of
https://github.com/Stichting-MINIX-Research-Foundation/xsrc.git
synced 2025-09-15 23:55:03 -04:00
288 lines
8.3 KiB
C
288 lines
8.3 KiB
C
/*
|
|
* $XFree86: xc/programs/Xserver/hw/tinyx/vesa/vga.c,v 1.1 2004/06/02 22:43:03 dawes Exp $
|
|
*
|
|
* Copyright © 2000 Keith Packard, member of The XFree86 Project, Inc.
|
|
*
|
|
* Permission to use, copy, modify, distribute, and sell this software and its
|
|
* documentation for any purpose is hereby granted without fee, provided that
|
|
* the above copyright notice appear in all copies and that both that
|
|
* copyright notice and this permission notice appear in supporting
|
|
* documentation, and that the name of Keith Packard not be used in
|
|
* advertising or publicity pertaining to distribution of the software without
|
|
* specific, written prior permission. Keith Packard makes no
|
|
* representations about the suitability of this software for any purpose. It
|
|
* is provided "as is" without express or implied warranty.
|
|
*
|
|
* KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
|
|
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
|
|
* EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
|
|
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
|
|
* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
|
|
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
|
|
* PERFORMANCE OF THIS SOFTWARE.
|
|
*/
|
|
/*
|
|
* Copyright (c) 2004 by The XFree86 Project, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining
|
|
* a copy of this software and associated documentation files (the
|
|
* "Software"), to deal in the Software without restriction, including
|
|
* without limitation the rights to use, copy, modify, merge, publish,
|
|
* distribute, sublicense, and/or sell copies of the Software, and to
|
|
* permit persons to whom the Software is furnished to do so, subject
|
|
* to the following conditions:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer
|
|
* in the documentation and/or other materials provided with the
|
|
* distribution, and in the same place and form as other copyright,
|
|
* license and disclaimer information.
|
|
*
|
|
* 3. The end-user documentation included with the redistribution,
|
|
* if any, must include the following acknowledgment: "This product
|
|
* includes software developed by The XFree86 Project, Inc
|
|
* (http://www.xfree86.org/) and its contributors", in the same
|
|
* place and form as other third-party acknowledgments. Alternately,
|
|
* this acknowledgment may appear in the software itself, in the
|
|
* same form and location as other such third-party acknowledgments.
|
|
*
|
|
* 4. Except as contained in this notice, the name of The XFree86
|
|
* Project, Inc shall not be used in advertising or otherwise to
|
|
* promote the sale, use or other dealings in this Software without
|
|
* prior written authorization from The XFree86 Project, Inc.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
|
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
|
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
|
* IN NO EVENT SHALL THE XFREE86 PROJECT, INC OR ITS CONTRIBUTORS BE
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
|
|
* OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
|
|
* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
|
|
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
|
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
|
|
* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
|
|
* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#include "vesa.h"
|
|
|
|
static const VesaModeRec vgaModes[] = {
|
|
{
|
|
6, 0,
|
|
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_LINEAR,
|
|
1, 1, MEMORY_PLANAR,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
640, 200, 80,
|
|
},
|
|
{
|
|
0xd, 0,
|
|
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR,
|
|
4, 4, MEMORY_PLANAR,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
320, 200, 40,
|
|
},
|
|
{
|
|
0xe, 0,
|
|
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR,
|
|
4, 4, MEMORY_PLANAR,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
640, 200, 80,
|
|
},
|
|
{
|
|
0x10, 0,
|
|
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR,
|
|
4, 4, MEMORY_PLANAR,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
640, 350, 80,
|
|
},
|
|
{
|
|
0x11, 0,
|
|
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_LINEAR,
|
|
1, 1, MEMORY_PLANAR,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
640, 480, 80,
|
|
},
|
|
{
|
|
0x12, 0,
|
|
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR,
|
|
4, 4, MEMORY_PLANAR,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
640, 480, 80,
|
|
},
|
|
{
|
|
0x13, 0,
|
|
MODE_SUPPORTED | MODE_GRAPHICS | MODE_VGA | MODE_COLOUR | MODE_LINEAR,
|
|
8, 8, MEMORY_PSEUDO,
|
|
0, 0, 0, 0, 0, 0, 0, 0, 0,
|
|
320, 200, 320,
|
|
},
|
|
};
|
|
|
|
#define NUM_VGA_MODE (sizeof vgaModes / sizeof vgaModes[0])
|
|
|
|
int
|
|
VgaGetNmode (Vm86InfoPtr vi)
|
|
{
|
|
return NUM_VGA_MODE;
|
|
}
|
|
|
|
int
|
|
VgaGetModes (Vm86InfoPtr vi, VesaModePtr mode, int nmode)
|
|
{
|
|
if (nmode > NUM_VGA_MODE)
|
|
nmode = NUM_VGA_MODE;
|
|
memcpy (mode, vgaModes, nmode * sizeof (VesaModeRec));
|
|
return nmode;
|
|
}
|
|
|
|
int
|
|
VgaSetMode(Vm86InfoPtr vi, int mode)
|
|
{
|
|
int code;
|
|
|
|
vi->vms.regs.eax = mode & 0x7f;
|
|
code = Vm86DoInterrupt (vi, 0x10);
|
|
if(code < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
VgaGetMode (Vm86InfoPtr vi, int *mode)
|
|
{
|
|
*mode = Vm86Memory (vi, 0x449);
|
|
return 0;
|
|
}
|
|
|
|
void
|
|
VgaSetWritePlaneMask(Vm86InfoPtr vi, int mask)
|
|
{
|
|
__asm__ volatile ("outb %b0,%w1" : : "a" (2), "d" (0x3c4));
|
|
__asm__ volatile ("outb %b0,%w1" : : "a" (mask), "d" (0x3c5));
|
|
}
|
|
|
|
void
|
|
VgaSetReadPlaneMap(Vm86InfoPtr vi, int map)
|
|
{
|
|
__asm__ volatile ("outb %b0,%w1" : : "a" (4), "d" (0x3ce));
|
|
__asm__ volatile ("outb %b0,%w1" : : "a" (map), "d" (0x3cf));
|
|
}
|
|
|
|
int
|
|
VgaSetPalette(Vm86InfoPtr vi, int first, int number, U8 *entries)
|
|
{
|
|
U8 *palette_scratch;
|
|
int mark;
|
|
int palette_base;
|
|
int i, j, code;
|
|
|
|
if(number == 0)
|
|
return 0;
|
|
|
|
if(first < 0 || number < 0 || first + number > 256) {
|
|
ErrorF("Cannot set %d, %d palette entries\n", first, number);
|
|
return -1;
|
|
}
|
|
|
|
mark = Vm86MarkMemory (vi);
|
|
palette_base = Vm86AllocateMemory (vi, 3 * 256);
|
|
|
|
palette_scratch = (U8 *)&LM(vi, palette_base);
|
|
|
|
vi->vms.regs.eax = 0x1012;
|
|
vi->vms.regs.ebx = first;
|
|
vi->vms.regs.ecx = number;
|
|
vi->vms.regs.es = POINTER_SEGMENT(palette_base);
|
|
vi->vms.regs.edx = POINTER_OFFSET(palette_base);
|
|
j = 0;
|
|
i = 0;
|
|
while (number--)
|
|
{
|
|
palette_scratch[j++] = entries[i++] >> 2;
|
|
palette_scratch[j++] = entries[i++] >> 2;
|
|
palette_scratch[j++] = entries[i++] >> 2;
|
|
i++;
|
|
}
|
|
code = Vm86DoInterrupt(vi, 0x10);
|
|
Vm86ReleaseMemory (vi, mark);
|
|
|
|
if(code < 0)
|
|
return -1;
|
|
return 0;
|
|
}
|
|
|
|
int
|
|
VgaGetPalette(Vm86InfoPtr vi, int first, int number, U8 *entries)
|
|
{
|
|
U8 *palette_scratch;
|
|
int mark;
|
|
int palette_base;
|
|
int i, j, code;
|
|
|
|
if(number == 0)
|
|
return 0;
|
|
|
|
if(first < 0 || number < 0 || first + number > 256) {
|
|
ErrorF("Cannot get %d, %d palette entries\n", first, number);
|
|
return -1;
|
|
}
|
|
|
|
mark = Vm86MarkMemory (vi);
|
|
palette_base = Vm86AllocateMemory (vi, 3 * 256);
|
|
|
|
palette_scratch = (U8 *)&LM(vi, palette_base);
|
|
|
|
vi->vms.regs.eax = 0x1017;
|
|
vi->vms.regs.ebx = first;
|
|
vi->vms.regs.ecx = number;
|
|
vi->vms.regs.es = POINTER_SEGMENT(palette_base);
|
|
vi->vms.regs.edx = POINTER_OFFSET(palette_base);
|
|
|
|
code = VbeDoInterrupt10(vi);
|
|
if(code < 0)
|
|
return -1;
|
|
|
|
j = 0;
|
|
i = 0;
|
|
while (number--)
|
|
{
|
|
entries[i++] = palette_scratch[j++] << 2;
|
|
entries[i++] = palette_scratch[j++] << 2;
|
|
entries[i++] = palette_scratch[j++] << 2;
|
|
entries[i++] = 0;
|
|
}
|
|
|
|
Vm86ReleaseMemory (vi, mark);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define VGA_FB(vm) ((vm) < 8 ? 0xb8000 : 0xa0000)
|
|
|
|
void *
|
|
VgaSetWindow (Vm86InfoPtr vi, int vmode, int bytes, int mode, int *size)
|
|
{
|
|
*size = 0x10000 - bytes;
|
|
return &LM(vi,VGA_FB(vmode) + bytes);
|
|
}
|
|
|
|
void *
|
|
VgaMapFramebuffer (Vm86InfoPtr vi, int vmode, int *size, CARD32 *ret_phys)
|
|
{
|
|
if (VGA_FB(vmode) == 0xa0000)
|
|
*size = 0x10000;
|
|
else
|
|
*size = 0x4000;
|
|
*ret_phys = VGA_FB(vmode);
|
|
return &LM(vi,VGA_FB(vmode));
|
|
}
|
|
|
|
void
|
|
VgaUnmapFramebuffer (Vm86InfoPtr vi)
|
|
{
|
|
}
|