diff options
Diffstat (limited to 'src/mesa/drivers/dos/mga/mga_mode.c')
| -rw-r--r-- | src/mesa/drivers/dos/mga/mga_mode.c | 231 |
1 files changed, 0 insertions, 231 deletions
diff --git a/src/mesa/drivers/dos/mga/mga_mode.c b/src/mesa/drivers/dos/mga/mga_mode.c deleted file mode 100644 index efba24ca691..00000000000 --- a/src/mesa/drivers/dos/mga/mga_mode.c +++ /dev/null @@ -1,231 +0,0 @@ -/* - * Mesa 3-D graphics library - * Version: 5.0 - * - * Copyright (C) 1999-2002 Brian Paul 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: - * - * The above copyright notice and this permission notice shall be included - * in all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS - * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN - * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN - * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. - */ - -/* - * DOS/DJGPP device driver v1.3 for Mesa -- MGA2064W mode switching - * - * Copyright (c) 2003 - Borca Daniel - * Email : [email protected] - * Web : http://www.geocities.com/dborca - */ - - -#include <dpmi.h> -#include <string.h> -#include <stubinfo.h> -#include <sys/exceptn.h> -#include <sys/farptr.h> -#include <sys/movedata.h> -#include <sys/segments.h> - -#include "../internal.h" -#include "mga_mode.h" - - - -static MGA_MODE oldmode; -static MGA_MODE modes[64]; - - - -/* - * VESA info - */ -#define V_SIGN 0 -#define V_MINOR 4 -#define V_MAJOR 5 -#define V_OEM_OFS 6 -#define V_OEM_SEG 8 -#define V_MODE_OFS 14 -#define V_MODE_SEG 16 -#define V_MEMORY 18 - -/* - * mode info - */ -#define M_ATTR 0 -#define M_GRAN 4 -#define M_SCANLEN 16 -#define M_XRES 18 -#define M_YRES 20 -#define M_BPP 25 -#define M_RED 31 -#define M_GREEN 33 -#define M_BLUE 35 -#define M_PHYS_PTR 40 - - - -/* Desc: get available modes - * - * In : - - * Out : linear modes list ptr - * - * Note: shouldn't use VESA... - */ -static MGA_MODE *_mga_mode_check (void) -{ - __dpmi_regs r; - word16 *p; - MGA_MODE *q; - char vesa_info[512], tmp[512]; - - _farpokel(_stubinfo->ds_selector, 0, 0x32454256); - r.x.ax = 0x4f00; - r.x.di = 0; - r.x.es = _stubinfo->ds_segment; - __dpmi_int(0x10, &r); - movedata(_stubinfo->ds_selector, 0, _my_ds(), (unsigned)vesa_info, 512); - if ((r.x.ax!=0x004f) || ((_32_ vesa_info[V_SIGN])!=0x41534556)) { - return NULL; - } - - p = (word16 *)(((_16_ vesa_info[V_MODE_SEG])<<4) + (_16_ vesa_info[V_MODE_OFS])); - q = modes; - do { - if ((q->mode=_farpeekw(__djgpp_dos_sel, (unsigned long)(p++)))==0xffff) { - break; - } - - r.x.ax = 0x4f01; - r.x.cx = q->mode; - r.x.di = 512; - r.x.es = _stubinfo->ds_segment; - __dpmi_int(0x10, &r); - movedata(_stubinfo->ds_selector, 512, _my_ds(), (unsigned)tmp, 256); - switch (tmp[M_BPP]) { - case 16: - q->bpp = tmp[M_RED] + tmp[M_GREEN] + tmp[M_BLUE]; - break; - case 8: - case 15: - case 24: - case 32: - q->bpp = tmp[M_BPP]; - break; - default: - q->bpp = 0; - } - if ((r.x.ax==0x004f) && ((tmp[M_ATTR]&0x11)==0x11) && q->bpp && (tmp[M_ATTR]&0x80)) { - q->xres = _16_ tmp[M_XRES]; - q->yres = _16_ tmp[M_YRES]; - q->mode |= 0x4000; - q++; - } - } while (TRUE); - - return modes; -} - - - -/* Desc: save current mode - * - * In : ptr to mode structure - * Out : 0 if success - * - * Note: shouldn't use VESA... - */ -static int _mga_mode_save (MGA_MODE *p) -{ - __asm("\n\ - movw $0x4f03, %%ax \n\ - int $0x10 \n\ - movl %%ebx, %0 \n\ - ":"=g"(p->mode)::"%eax", "%ebx"); - return 0; -} - - - -/* Desc: switch to specified mode - * - * In : ptr to mode structure, refresh rate - * Out : 0 if success - * - * Note: shouldn't use VESA... - */ -int mga_mode_switch (MGA_MODE *p, int refresh) -{ - if (oldmode.mode == 0) { - _mga_mode_save(&oldmode); - } - __asm("movw $0x4f02, %%ax; int $0x10"::"b"(p->mode):"%eax"); - return 0; - - (void)refresh; /* silence compiler warning */ -} - - - -/* Desc: restore to the mode prior to first call to `mga_switch' - * - * In : - - * Out : 0 if success - * - * Note: shouldn't use VESA... - */ -int mga_mode_restore (void) -{ - if (oldmode.mode != 0) { - __asm("movw $0x4f02, %%ax; int $0x10"::"b"(oldmode.mode):"%eax"); - oldmode.mode = 0; - } - return 0; -} - - - -/* Desc: return suitable mode - * - * In : width, height, bpp - * Out : ptr to mode structure - * - * Note: - - */ -MGA_MODE *mga_mode_find (int width, int height, int bpp) -{ - static MGA_MODE *q = NULL; - - MGA_MODE *p; - unsigned int min; - - if (q == NULL) { - if ((q = _mga_mode_check()) == NULL) { - return NULL; - } - } - - /* search for a mode that fits our request */ - for (min=-1, p=NULL; q->mode!=0xffff; q++) { - if ((q->xres>=width) && (q->yres>=height) && (q->bpp==bpp)) { - if (min>=(unsigned)(q->xres*q->yres)) { - min = q->xres*q->yres; - p = q; - } - } - } - - return p; -} |