diff options
Diffstat (limited to 'src/mesa/drivers/dos/vbeaf.c')
| -rw-r--r-- | src/mesa/drivers/dos/vbeaf.c | 607 |
1 files changed, 0 insertions, 607 deletions
diff --git a/src/mesa/drivers/dos/vbeaf.c b/src/mesa/drivers/dos/vbeaf.c deleted file mode 100644 index eef17939854..00000000000 --- a/src/mesa/drivers/dos/vbeaf.c +++ /dev/null @@ -1,607 +0,0 @@ -/*
- * Mesa 3-D graphics library
- * Version: 4.0
- *
- * Copyright (C) 1999 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 v0.2 for Mesa 4.0
- *
- * Copyright (C) 2002 - Borca Daniel
- * Email : [email protected]
- * Web : http://www.geocities.com/dborca
- */
-
-
-#include <ctype.h>
-#include <dpmi.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sys/exceptn.h>
-#include <sys/nearptr.h>
-
-#include "dpmiint.h"
-#include "vbeaf.h"
-
-
-
-#define MMAP unsigned long
-#define NOMM 0
-#define MVAL(a) (void *)((a)-__djgpp_base_address)
-
-
-
-#define SAFE_CALL(FUNC)\
-{ \
- int _ds, _es, _ss; \
- \
- __asm__ __volatile__( \
- " movw %%ds, %w0 ; " \
- " movw %%es, %w1 ; " \
- " movw %%ss, %w2 ; " \
- " movw %w3, %%ds ; " \
- " movw %w3, %%es ; " \
- " movw %w3, %%ss ; " \
- \
- : "=&q" (_ds), \
- "=&q" (_es), \
- "=&q" (_ss) \
- : "q" (__djgpp_ds_alias) \
- ); \
- \
- FUNC \
- \
- __asm__ __volatile__( \
- "movw %w0, %%ds ; " \
- "movw %w1, %%es ; " \
- "movw %w2, %%ss ; " \
- : \
- : "q" (_ds), \
- "q" (_es), \
- "q" (_ss) \
- ); \
-}
-
-#define SAFISH_CALL(FUNC) FUNC
-
-
-
-extern void _af_int86(), _af_call_rm(), _af_wrapper_end();
-
-
-
-static AF_DRIVER *af_driver = NULL; /* the VBE/AF driver */
-int _accel_active = FALSE; /* is the accelerator busy? */
-static FAF_HWPTR_DATA *faf_farptr; /* FreeBE/AF farptr data */
-static MMAP af_memmap[4] = { NOMM, NOMM, NOMM, NOMM };
-static MMAP af_banked_mem = NOMM;
-static MMAP af_linear_mem = NOMM;
-
-
-
-__inline__ fixed itofix (int x)
-{
- return x << 16;
-}
-
-
-
-/*
- * loads the driver from disk
- */
-static int load_driver (char *filename)
-{
- FILE *f;
- size_t size;
-
- if ((f=fopen(filename, "rb"))!=NULL) {
- fseek(f, 0, SEEK_END);
- size = ftell(f);
- fseek(f, 0, SEEK_SET);
- if ((af_driver=(AF_DRIVER *)malloc(size))!=NULL) {
- if (fread(af_driver, size, 1, f)) {
- return 0;
- } else {
- free(af_driver);
- }
- }
- fclose(f);
- }
-
- return -1;
-}
-
-
-
-/*
- * Calls a VBE/AF function using the version 1.0 style asm interface.
- */
-static int call_vbeaf_asm (void *proc)
-{
- int ret;
-
- proc = (void *)((long)af_driver + (long)proc);
-
- /* use gcc-style inline asm */
- __asm__("\n\
- pushl %%ebx \n\
- movl %%ecx, %%ebx \n\
- call *%%edx \n\
- popl %%ebx \n\
- ": "=&a" (ret) /* return value in eax */
- : "c" (af_driver), /* VBE/AF driver in ds:ebx */
- "d" (proc) /* function ptr in edx */
- : "memory" /* assume everything is clobbered */
- );
-
- return ret;
-}
-
-
-
-/*
- * prepares the FreeBE/AF extension functions.
- */
-static int initialise_freebeaf_extensions (void)
-{
- typedef unsigned long (*EXT_INIT_FUNC)(AF_DRIVER *af, unsigned long id);
- EXT_INIT_FUNC ext_init;
- unsigned long magic;
- int v1, v2;
- void *ptr;
-
- /* safety check */
- if (!af_driver->OemExt) {
- return 0;
- }
-
- /* call the extension init function */
- ext_init = (EXT_INIT_FUNC)((long)af_driver + (long)af_driver->OemExt);
-
- magic = ext_init(af_driver, FAFEXT_INIT);
-
- /* check that it returned a nice magic number */
- v1 = (magic>>8)&0xFF;
- v2 = magic&0xFF;
-
- if (((magic&0xFFFF0000) != FAFEXT_MAGIC) || (!isdigit(v1)) || (!isdigit(v2))) {
- return 0;
- }
-
- /* export libc and pmode functions if the driver wants them */
- ptr = af_driver->OemExt(af_driver, FAFEXT_LIBC);
-#ifdef _FAFEXT_LIBC
- if (ptr)
- _fill_vbeaf_libc_exports(ptr);
-#endif
-
- ptr = af_driver->OemExt(af_driver, FAFEXT_PMODE);
-#ifdef _FAFEXT_PMODE
- if (ptr)
- _fill_vbeaf_pmode_exports(ptr);
-#endif
-
- return (v1-'0')*10 + (v2-'0');
-}
-
-
-
-/*
- * Sets up the DPMI memory mappings required by the VBE/AF driver,
- * returning zero on success.
- */
-static int initialise_vbeaf_driver (int faf_ext)
-{
- int c;
-
- /* query driver for the FreeBE/AF farptr extension */
- if (faf_ext > 0)
- faf_farptr = af_driver->OemExt(af_driver, FAFEXT_HWPTR);
- else
- faf_farptr = NULL;
-
- if (faf_farptr) {
- /* use farptr access */
- for (c=0; c<4; c++) {
- faf_farptr->IOMemMaps[c].sel = 0;
- faf_farptr->IOMemMaps[c].offset = 0;
- }
-
- faf_farptr->BankedMem.sel = 0;
- faf_farptr->BankedMem.offset = 0;
-
- faf_farptr->LinearMem.sel = 0;
- faf_farptr->LinearMem.offset = 0;
- } else {
- /* enable nearptr access */
- return -5;
- }
-
- /* create mapping for MMIO ports */
- for (c=0; c<4; c++) {
- if (af_driver->IOMemoryBase[c]) {
- if ((af_memmap[c]=_create_linear_mapping(af_driver->IOMemoryBase[c], af_driver->IOMemoryLen[c]))==NULL)
- return -4;
-
- if (faf_farptr) {
- /* farptr IO mapping */
- if ((faf_farptr->IOMemMaps[c].sel=_create_selector(af_memmap[c], af_driver->IOMemoryLen[c]))<0) {
- _remove_linear_mapping(af_memmap+c);
- return -4;
- }
- faf_farptr->IOMemMaps[c].offset = 0;
- af_driver->IOMemMaps[c] = NULL;
- } else {
- /* nearptr IO mapping */
- af_driver->IOMemMaps[c] = MVAL(af_memmap[c]);
- }
- }
- }
-
- /* create mapping for banked video RAM */
- if (af_driver->BankedBasePtr) {
- if ((af_banked_mem=_create_linear_mapping(af_driver->BankedBasePtr, 0x10000))==NULL)
- return -4;
-
- if (faf_farptr) {
- /* farptr banked vram mapping */
- if ((faf_farptr->BankedMem.sel=_create_selector(af_banked_mem, 0x10000))<0) {
- _remove_linear_mapping(&af_banked_mem);
- return -4;
- }
- faf_farptr->BankedMem.offset = 0;
- af_driver->BankedMem = NULL;
- } else {
- /* nearptr banked vram mapping */
- af_driver->BankedMem = MVAL(af_banked_mem);
- }
- }
-
- /* create mapping for linear video RAM */
- if (af_driver->LinearBasePtr) {
- if ((af_linear_mem=_create_linear_mapping(af_driver->LinearBasePtr, af_driver->LinearSize*1024))==NULL)
- return -4;
-
- if (faf_farptr) {
- /* farptr linear vram mapping */
- if ((faf_farptr->LinearMem.sel=_create_selector(af_linear_mem, af_driver->LinearSize*1024))<0) {
- _remove_linear_mapping(&af_linear_mem);
- return -4;
- }
- faf_farptr->LinearMem.offset = 0;
- af_driver->LinearMem = NULL;
- } else {
- /* nearptr linear vram mapping */
- af_driver->LinearMem = MVAL(af_linear_mem);
- }
- }
-
- /* callback functions: why are these needed? ugly, IMHO */
- af_driver->Int86 = (void *)_af_int86;
- af_driver->CallRealMode = (void *)_af_call_rm;
-
- return 0;
-}
-
-
-
-/* go_accel:
- * Prepares the hardware for an accelerated drawing operation.
- */
-static __inline__ void go_accel (void)
-{
- /* turn on the accelerator */
- if (!_accel_active) {
- if (af_driver->DisableDirectAccess)
- af_driver->DisableDirectAccess(af_driver);
-
- _accel_active = TRUE;
- }
-}
-
-
-
-void af_exit (void)
-{
- int c;
-
- /* undo memory mappings */
- if (faf_farptr) {
- for (c=0; c<4; c++)
- _remove_selector(&faf_farptr->IOMemMaps[c].sel);
-
- _remove_selector(&faf_farptr->BankedMem.sel);
- _remove_selector(&faf_farptr->LinearMem.sel);
- }
-
- for (c=0; c<4; c++)
- _remove_linear_mapping(af_memmap+c);
-
- _remove_linear_mapping(&af_banked_mem);
- _remove_linear_mapping(&af_linear_mem);
-
- if (af_driver) {
- free(af_driver);
- }
-}
-
-
-
-int af_init (char *filename)
-{
- int faf_ext, r;
-
- if (load_driver(filename)) {
- /* driver not found */
- return -1;
- }
-
- faf_ext = initialise_freebeaf_extensions();
-
- /* special setup for Plug and Play hardware */
- if (call_vbeaf_asm(af_driver->PlugAndPlayInit)) {
- af_exit();
- /* Plug and Play initialisation failed */
- return -2;
- }
-
- if ((r=initialise_vbeaf_driver(faf_ext))) {
- af_exit();
- /* -4, ... */
- return r;
- }
-
- /* low level driver initialisation */
- if (call_vbeaf_asm(af_driver->InitDriver)) {
- af_exit();
- /* VBE/AF device not present */
- return -3;
- }
-
- _go32_dpmi_lock_code((void *)_af_int86, (long)_af_wrapper_end-(long)_af_int86);
-
- return 0;
-}
-
-
-
-#include "video.h"
-
-
-
-static long page, xres, startx, starty;
-
-
-
-AF_MODE_INFO *af_getmode (int i, int *granularity)
-{
- static AF_MODE_INFO info;
- int mode = af_driver->AvailableModes[i];
-
- if ((mode==-1)||af_driver->GetVideoModeInfo(af_driver, mode, &info)) {
- return NULL;
- } else {
- *granularity = af_driver->BankSize * 1024;
- return &info;
- }
-}
-
-
-
-void *af_dump_virtual (void *buffer, int width, int height, int pitch)
-{
- SAFISH_CALL(
- go_accel();
-
- af_driver->BitBltSys(af_driver, buffer, pitch, 0, 0, width, height, startx, starty, 0);
- );
- return buffer;
-}
-
-
-
-void af_switch_bank (int bank)
-{
- af_driver->SetBank(af_driver, bank);
-}
-
-
-
-int af_flip (void)
-{
- SAFISH_CALL(
- go_accel();
-
- af_driver->SetDisplayStart(af_driver, page*xres, 0, 1);
- );
- if (page ^= 1) {
- startx += xres;
- } else {
- startx -= xres;
- }
-
- return page;
-}
-
-
-
-void af_fillrect (void *buffer, int x, int y, int width, int height, int color)
-{
- (void)buffer;
- SAFISH_CALL(
- go_accel();
-
- af_driver->DrawRect(af_driver, color, startx+x, starty+y, width, height);
- );
-}
-
-
-
-void af_triangle (int x1, int y1, int x2, int y2, int x3, int y3, int color)
-{
- AF_TRAP trap;
-
- /* sort along the vertical axis */
- #define TRI_SWAP(a, b) \
- { \
- int tmp = x##a; \
- x##a = x##b; \
- x##b = tmp; \
- \
- tmp = y##a; \
- y##a = y##b; \
- y##b = tmp; \
- }
-
- if (y2 < y1)
- TRI_SWAP(1, 2);
-
- if (y3 < y1) {
- TRI_SWAP(1, 3);
- TRI_SWAP(2, 3);
- } else if (y3 < y2)
- TRI_SWAP(2, 3);
-
- SAFISH_CALL(
- go_accel();
-
- if (y2 > y1) {
- /* draw the top half of the triangle as one trapezoid */
- trap.y = y1+starty;
- trap.count = y2-y1;
- trap.x1 = trap.x2 = itofix(x1+startx);
- trap.slope1 = itofix(x2-x1) / (y2-y1);
- trap.slope2 = itofix(x3-x1) / (y3-y1);
-
- if (trap.slope1 < 0)
- trap.x1 += MIN(trap.slope1+itofix(1), 0);
-
- if (trap.slope2 < 0)
- trap.x2 += MIN(trap.slope2+itofix(1), 0);
-
- if (trap.slope1 > trap.slope2)
- trap.x1 += MAX(ABS(trap.slope1), itofix(1));
- else
- trap.x2 += MAX(ABS(trap.slope2), itofix(1));
-
- af_driver->DrawTrap(af_driver, color, &trap);
-
- if (y3 > y2) {
- /* draw the bottom half as a second trapezoid */
- if (trap.slope1 < 0)
- trap.x1 -= MIN(trap.slope1+itofix(1), 0);
-
- if (trap.slope1 > trap.slope2)
- trap.x1 -= MAX(ABS(trap.slope1), itofix(1));
-
- trap.count = y3-y2;
- trap.slope1 = itofix(x3-x2) / (y3-y2);
-
- if (trap.slope1 < 0)
- trap.x1 += MIN(trap.slope1+itofix(1), 0);
-
- if (trap.x1 > trap.x2)
- trap.x1 += MAX(ABS(trap.slope1), itofix(1));
-
- af_driver->DrawTrap(af_driver, color, &trap);
- }
- } else if (y3 > y2) {
- /* we can draw the entire thing with a single trapezoid */
- trap.y = y1+starty;
- trap.count = y3-y2;
- trap.x1 = itofix(x2+startx);
- trap.x2 = itofix(x1+startx);
- trap.slope1 = itofix(x3-x2) / (y3-y2);
- trap.slope2 = (y3 > y1) ? (itofix(x3-x1) / (y3-y1)) : 0;
-
- if (trap.slope1 < 0)
- trap.x1 += MIN(trap.slope1+itofix(1), 0);
-
- if (trap.slope2 < 0)
- trap.x2 += MIN(trap.slope2+itofix(1), 0);
-
- if (trap.x1 > trap.x2)
- trap.x1 += MAX(ABS(trap.slope1), itofix(1));
- else
- trap.x2 += MAX(ABS(trap.slope2), itofix(1));
-
- af_driver->DrawTrap(af_driver, color, &trap);
- }
- );
-}
-
-
-
-int af_setup_mode (int mode, int caps)
-{
- if (CHECK_SOFTDB(caps) && af_driver->BitBltSys) {
- vl_flip = af_dump_virtual;
- }
- if (af_driver->SetBank) {
- vl_switch_bank = af_switch_bank;
- }
- if (!CHECK_SOFTDB(caps) && af_driver->DrawRect) {
- vl_clear = af_fillrect;
- }
-
- if (CHECK_SINGLE(caps) || CHECK_SOFTDB(caps)) {
- page = 0;
- } else {
- page = 1;
- }
-
- return (mode&0x4000)?faf_farptr->LinearMem.sel:faf_farptr->BankedMem.sel;
-}
-
-
-
-int af_setup_buffer (int x, int y)
-{
- startx = x + page*xres;
- starty = y;
-
- return page;
-}
-
-
-
-void *af_getprim (int primitive)
-{
- switch (primitive) {
- case TRI_RGB_FLAT:
- return af_driver->DrawTrap?(void *)af_triangle:NULL;
- default:
- return NULL;
- }
-}
-
-
-
-int af_enter_mode (int mode, int width, int height)
-{
- long wret;
- if (!af_driver->SetVideoMode(af_driver, mode, width, height, &wret, 1, NULL)) {
- xres = width/2;
- return wret;
- } else {
- return -1;
- }
-}
|