new DOS driver files from Daniel Borca

7 files changed, 2318 insertions, 0 deletions

diff --git a/src/mesa/drivers/dos/dpmi.c b/src/mesa/drivers/dos/dpmi.c
new file mode 100644
index 0000000000..26400ac3af
--- /dev/null
+++ b/src/mesa/drivers/dos/dpmi.c
@@ -0,0 +1,123 @@
+/*

+ * 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 v0.3 for Mesa 4.0

+ *

+ *  Copyright (C) 2002 - Borca Daniel

+ *  Email : dborca@yahoo.com

+ *  Web   : http://www.geocities.com/dborca

+ */

+

+

+#include <dpmi.h>

+

+#include "dpmiint.h"

+

+

+

+/* _create_linear_mapping:

+ *  Maps a physical address range into linear memory.

+ */

+static int _create_linear_mapping (unsigned long *linear, unsigned long physaddr, int size)

+{

+ __dpmi_meminfo meminfo;

+

+ if (physaddr >= 0x100000) {

+    /* map into linear memory */

+    meminfo.address = physaddr;

+    meminfo.size = size;

+    if (__dpmi_physical_address_mapping(&meminfo) != 0)

+       return -1;

+

+    *linear = meminfo.address;

+ } else {

+    /* exploit 1 -> 1 physical to linear mapping in low megabyte */

+    *linear = physaddr;

+ }

+

+ return 0;

+}

+

+

+

+/* _remove_linear_mapping:

+ *  Frees the DPMI resources being used to map a linear address range.

+ */

+static void _remove_linear_mapping (unsigned long *linear)

+{

+ __dpmi_meminfo meminfo;

+

+ if (*linear) {

+    if (*linear >= 0x100000) {

+       meminfo.address = *linear;

+       __dpmi_free_physical_address_mapping(&meminfo);

+    }

+

+    *linear = 0;

+ }

+}

+

+

+

+/* _create_selector:

+ *  Allocates a selector to access a region of linear memory.

+ */

+int _create_selector (int *segment, unsigned long base, int size)

+{

+ /* allocate an ldt descriptor */

+ if ((*segment=__dpmi_allocate_ldt_descriptors(1)) < 0) {

+    *segment = 0;

+    return -1;

+ }

+

+ /* create the linear mapping */

+ if (_create_linear_mapping(&base, base, size)) {

+    __dpmi_free_ldt_descriptor(*segment);

+    *segment = 0;

+    return -1;

+ }

+

+ /* set the descriptor base and limit */

+ __dpmi_set_segment_base_address(*segment, base);

+ __dpmi_set_segment_limit(*segment, MAX(size-1, 0xFFFF));

+

+ return 0;

+}

+

+

+

+/* _remove_selector:

+ *  Frees a DPMI segment selector.

+ */

+void _remove_selector (int *segment)

+{

+ if (*segment) {

+    unsigned long base;

+    __dpmi_get_segment_base_address(*segment, &base);

+    _remove_linear_mapping(&base);

+    __dpmi_free_ldt_descriptor(*segment);

+    *segment = 0;

+ }

+}

diff --git a/src/mesa/drivers/dos/dpmiint.h b/src/mesa/drivers/dos/dpmiint.h
new file mode 100644
index 0000000000..8494ee6bb2
--- /dev/null
+++ b/src/mesa/drivers/dos/dpmiint.h
@@ -0,0 +1,48 @@
+/*

+ * 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 v0.3 for Mesa 4.0

+ *

+ *  Copyright (C) 2002 - Borca Daniel

+ *  Email : dborca@yahoo.com

+ *  Web   : http://www.geocities.com/dborca

+ */

+

+

+#ifndef DPMIINT_H_included

+#define DPMIINT_H_included

+

+#ifndef NULL

+#define NULL 0

+#endif

+

+#ifndef MAX

+#define MAX(x, y) (((x)<(y))?(y):(x))

+#endif

+

+int _create_selector (int *segment, unsigned long base, int size);

+void _remove_selector (int *segment);

+

+#endif

diff --git a/src/mesa/drivers/dos/vbeaf.c b/src/mesa/drivers/dos/vbeaf.c
new file mode 100644
index 0000000000..eef1793985
--- /dev/null
+++ b/src/mesa/drivers/dos/vbeaf.c
@@ -0,0 +1,607 @@
+/*

+ * 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 : dborca@yahoo.com

+ *  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;

+ }

+}

diff --git a/src/mesa/drivers/dos/vbeaf.h b/src/mesa/drivers/dos/vbeaf.h
new file mode 100644
index 0000000000..70ab669b48
--- /dev/null
+++ b/src/mesa/drivers/dos/vbeaf.h
@@ -0,0 +1,813 @@
+/*

+ *       ______             ____  ______     _____  ______ 

+ *      |  ____|           |  _ \|  ____|   / / _ \|  ____|

+ *      | |__ _ __ ___  ___| |_) | |__     / / |_| | |__ 

+ *      |  __| '__/ _ \/ _ \  _ <|  __|   / /|  _  |  __|

+ *      | |  | | |  __/  __/ |_) | |____ / / | | | | |

+ *      |_|  |_|  \___|\___|____/|______/_/  |_| |_|_|

+ *

+ *

+ *      VBE/AF structure definitions and constants.

+ *

+ *      See freebe.txt for copyright information.

+ */

+

+

+#define FREEBE_VERSION     "v1.2"

+

+

+#ifndef ALLEGRO_H

+

+

+#include <pc.h>

+

+

+#define NULL   0

+

+#define TRUE   1

+#define FALSE  0

+

+#define MIN(x,y)     (((x) < (y)) ? (x) : (y))

+#define MAX(x,y)     (((x) > (y)) ? (x) : (y))

+#define MID(x,y,z)   MAX((x), MIN((y), (z)))

+

+#define ABS(x)       (((x) >= 0) ? (x) : (-(x)))

+

+#define BYTES_PER_PIXEL(bpp)     (((int)(bpp) + 7) / 8)

+

+typedef long fixed;

+

+

+#endif

+

+

+

+/* mode attribute flags */

+#define afHaveMultiBuffer        0x0001  /* multiple buffers */

+#define afHaveVirtualScroll      0x0002  /* virtual scrolling */

+#define afHaveBankedBuffer       0x0004  /* supports banked framebuffer */

+#define afHaveLinearBuffer       0x0008  /* supports linear framebuffer */

+#define afHaveAccel2D            0x0010  /* supports 2D acceleration */

+#define afHaveDualBuffers        0x0020  /* uses dual buffers */

+#define afHaveHWCursor           0x0040  /* supports a hardware cursor */

+#define afHave8BitDAC            0x0080  /* 8 bit palette DAC */

+#define afNonVGAMode             0x0100  /* not a VGA mode */

+#define afHaveDoubleScan         0x0200  /* supports double scanning */

+#define afHaveInterlaced         0x0400  /* supports interlacing */

+#define afHaveTripleBuffer       0x0800  /* supports triple buffering */

+#define afHaveStereo             0x1000  /* supports stereo LCD glasses */

+#define afHaveROP2               0x2000  /* supports ROP2 mix codes */

+#define afHaveHWStereoSync       0x4000  /* hardware stereo signalling */

+#define afHaveEVCStereoSync      0x8000  /* HW stereo sync via EVC connector */

+

+

+

+/* drawing modes */

+typedef enum 

+{ 

+   AF_FORE_MIX = 0,           /* background pixels use the foreground mix */

+   AF_REPLACE_MIX = 0,        /* solid drawing mode */

+   AF_AND_MIX,                /* bitwise AND mode */

+   AF_OR_MIX,                 /* bitwise OR mode */

+   AF_XOR_MIX,                /* bitwise XOR mode */

+   AF_NOP_MIX,                /* nothing is drawn */

+

+   /* below here need only be supported if you set the afHaveROP2 flag */

+   AF_R2_BLACK = 0x10, 

+   AF_R2_NOTMERGESRC, 

+   AF_R2_MASKNOTSRC, 

+   AF_R2_NOTCOPYSRC, 

+   AF_R2_MASKSRCNOT, 

+   AF_R2_NOT, 

+   AF_R2_XORSRC, 

+   AF_R2_NOTMASKSRC, 

+   AF_R2_MASKSRC, 

+   AF_R2_NOTXORSRC, 

+   AF_R2_NOP, 

+   AF_R2_MERGENOTSRC, 

+   AF_R2_COPYSRC, 

+   AF_R2_MERGESRCNOT, 

+   AF_R2_MERGESRC, 

+   AF_R2_WHITE, 

+} AF_mixModes;

+

+

+

+/* fixed point coordinate pair */

+typedef struct AF_FIX_POINT 

+{

+   fixed x;

+   fixed y;

+} AF_FIX_POINT;

+

+

+

+/* trapezium information block */

+typedef struct AF_TRAP 

+{

+   unsigned long y;

+   unsigned long count;

+   fixed x1;

+   fixed x2;

+   fixed slope1;

+   fixed slope2;

+} AF_TRAP;

+

+

+

+/* hardware cursor description */

+typedef struct AF_CURSOR 

+{

+   unsigned long xorMask[32];

+   unsigned long andMask[32];

+   unsigned long hotx;

+   unsigned long hoty;

+} AF_CURSOR;

+

+

+

+/* color value */

+typedef struct AF_PALETTE 

+{

+   unsigned char blue;

+   unsigned char green;

+   unsigned char red;

+   unsigned char alpha;

+} AF_PALETTE;

+

+

+

+/* CRTC information block for refresh rate control */

+typedef struct AF_CRTCInfo

+{

+   unsigned short HorizontalTotal      __attribute__ ((packed));  /* horizontal total (pixels) */

+   unsigned short HorizontalSyncStart  __attribute__ ((packed));  /* horizontal sync start position */

+   unsigned short HorizontalSyncEnd    __attribute__ ((packed));  /* horizontal sync end position */

+   unsigned short VerticalTotal        __attribute__ ((packed));  /* vertical total (lines) */

+   unsigned short VerticalSyncStart    __attribute__ ((packed));  /* vertical sync start position */

+   unsigned short VerticalSyncEnd      __attribute__ ((packed));  /* vertical sync end position */

+   unsigned char  Flags                __attribute__ ((packed));  /* initialisation flags for mode */

+   unsigned int   PixelClock           __attribute__ ((packed));  /* pixel clock in units of Hz */

+   unsigned short RefreshRate          __attribute__ ((packed));  /* expected refresh rate in .01Hz */

+   unsigned short NumBuffers           __attribute__ ((packed));  /* number of display buffers */

+} AF_CRTCInfo;

+

+

+

+/* definitions for CRTC information block flags */

+#define afDoubleScan             0x0001  /* enable double scanned mode */

+#define afInterlaced             0x0002  /* enable interlaced mode */

+#define afHSyncNeg               0x0004  /* horizontal sync is negative */

+#define afVSyncNeg               0x0008  /* vertical sync is negative */

+

+

+

+typedef unsigned char AF_PATTERN;      /* pattern array elements */

+typedef unsigned AF_STIPPLE;           /* 16 bit line stipple pattern */

+typedef unsigned AF_COLOR;             /* packed color values */

+

+

+

+/* mode information structure */

+typedef struct AF_MODE_INFO 

+{

+   unsigned short Attributes              __attribute__ ((packed));

+   unsigned short XResolution             __attribute__ ((packed));

+   unsigned short YResolution             __attribute__ ((packed));

+   unsigned short BytesPerScanLine        __attribute__ ((packed));

+   unsigned short BitsPerPixel            __attribute__ ((packed));

+   unsigned short MaxBuffers              __attribute__ ((packed));

+   unsigned char  RedMaskSize             __attribute__ ((packed));

+   unsigned char  RedFieldPosition        __attribute__ ((packed));

+   unsigned char  GreenMaskSize           __attribute__ ((packed));

+   unsigned char  GreenFieldPosition      __attribute__ ((packed));

+   unsigned char  BlueMaskSize            __attribute__ ((packed));

+   unsigned char  BlueFieldPosition       __attribute__ ((packed));

+   unsigned char  RsvdMaskSize            __attribute__ ((packed));

+   unsigned char  RsvdFieldPosition       __attribute__ ((packed));

+   unsigned short MaxBytesPerScanLine     __attribute__ ((packed));

+   unsigned short MaxScanLineWidth        __attribute__ ((packed));

+

+   /* VBE/AF 2.0 extensions */

+   unsigned short LinBytesPerScanLine     __attribute__ ((packed));

+   unsigned char  BnkMaxBuffers           __attribute__ ((packed));

+   unsigned char  LinMaxBuffers           __attribute__ ((packed));

+   unsigned char  LinRedMaskSize          __attribute__ ((packed));

+   unsigned char  LinRedFieldPosition     __attribute__ ((packed));

+   unsigned char  LinGreenMaskSize        __attribute__ ((packed));

+   unsigned char  LinGreenFieldPosition   __attribute__ ((packed));

+   unsigned char  LinBlueMaskSize         __attribute__ ((packed));

+   unsigned char  LinBlueFieldPosition    __attribute__ ((packed));

+   unsigned char  LinRsvdMaskSize         __attribute__ ((packed));

+   unsigned char  LinRsvdFieldPosition    __attribute__ ((packed));

+   unsigned long  MaxPixelClock           __attribute__ ((packed));

+   unsigned long  VideoCapabilities       __attribute__ ((packed));

+   unsigned short VideoMinXScale          __attribute__ ((packed));

+   unsigned short VideoMinYScale          __attribute__ ((packed));

+   unsigned short VideoMaxXScale          __attribute__ ((packed));

+   unsigned short VideoMaxYScale          __attribute__ ((packed));

+

+   unsigned char  reserved[76]            __attribute__ ((packed));

+

+} AF_MODE_INFO;

+

+

+

+#define DC  struct AF_DRIVER *dc

+

+

+

+/* main VBE/AF driver structure */

+typedef struct AF_DRIVER 

+{

+   /* header */

+   char           Signature[12]           __attribute__ ((packed));

+   unsigned long  Version                 __attribute__ ((packed));

+   unsigned long  DriverRev               __attribute__ ((packed));

+   char           OemVendorName[80]       __attribute__ ((packed));

+   char           OemCopyright[80]        __attribute__ ((packed));

+   short          *AvailableModes         __attribute__ ((packed));

+   unsigned long  TotalMemory             __attribute__ ((packed));

+   unsigned long  Attributes              __attribute__ ((packed));

+   unsigned long  BankSize                __attribute__ ((packed));

+   unsigned long  BankedBasePtr           __attribute__ ((packed));

+   unsigned long  LinearSize              __attribute__ ((packed));

+   unsigned long  LinearBasePtr           __attribute__ ((packed));

+   unsigned long  LinearGranularity       __attribute__ ((packed));

+   unsigned short *IOPortsTable           __attribute__ ((packed));

+   unsigned long  IOMemoryBase[4]         __attribute__ ((packed));

+   unsigned long  IOMemoryLen[4]          __attribute__ ((packed));

+   unsigned long  LinearStridePad         __attribute__ ((packed));

+   unsigned short PCIVendorID             __attribute__ ((packed));

+   unsigned short PCIDeviceID             __attribute__ ((packed));

+   unsigned short PCISubSysVendorID       __attribute__ ((packed));

+   unsigned short PCISubSysID             __attribute__ ((packed));

+   unsigned long  Checksum                __attribute__ ((packed));

+   unsigned long  res2[6]                 __attribute__ ((packed));

+

+   /* near pointers mapped by the application */

+   void           *IOMemMaps[4]           __attribute__ ((packed));

+   void           *BankedMem              __attribute__ ((packed));

+   void           *LinearMem              __attribute__ ((packed));

+   unsigned long  res3[5]                 __attribute__ ((packed));

+

+   /* driver state variables */

+   unsigned long  BufferEndX              __attribute__ ((packed));

+   unsigned long  BufferEndY              __attribute__ ((packed));

+   unsigned long  OriginOffset            __attribute__ ((packed));

+   unsigned long  OffscreenOffset         __attribute__ ((packed));

+   unsigned long  OffscreenStartY         __attribute__ ((packed));

+   unsigned long  OffscreenEndY           __attribute__ ((packed));

+   unsigned long  res4[10]                __attribute__ ((packed));

+

+   /* relocatable 32 bit bank switch routine, for Windows (ugh!) */

+   unsigned long  SetBank32Len            __attribute__ ((packed));

+   void           *SetBank32              __attribute__ ((packed));

+

+   /* callback functions provided by the application */

+   void           *Int86                  __attribute__ ((packed));

+   void           *CallRealMode           __attribute__ ((packed));

+

+   /* main driver setup routine */

+   void           *InitDriver             __attribute__ ((packed));

+

+   /* VBE/AF 1.0 asm interface (obsolete and not supported by Allegro) */

+   void           *af10Funcs[40]          __attribute__ ((packed));

+

+   /* VBE/AF 2.0 extensions */

+   void           *PlugAndPlayInit        __attribute__ ((packed));

+

+   /* extension query function, specific to FreeBE/AF */

+   void           *(*OemExt)(DC, unsigned long id);

+

+   /* extension hook for implementing additional VESA interfaces */

+   void           *SupplementalExt        __attribute__ ((packed));

+

+   /* device driver functions */

+   long  (*GetVideoModeInfo)(DC, short mode, AF_MODE_INFO *modeInfo);

+   long  (*SetVideoMode)(DC, short mode, long virtualX, long virtualY, long *bytesPerLine, int numBuffers, AF_CRTCInfo *crtc);

+   void  (*RestoreTextMode)(DC);

+   long  (*GetClosestPixelClock)(DC, short mode, unsigned long pixelClock);

+   void  (*SaveRestoreState)(DC, int subfunc, void *saveBuf);

+   void  (*SetDisplayStart)(DC, long x, long y, long waitVRT);

+   void  (*SetActiveBuffer)(DC, long index);

+   void  (*SetVisibleBuffer)(DC, long index, long waitVRT);

+   int   (*GetDisplayStartStatus)(DC);

+   void  (*EnableStereoMode)(DC, int enable);

+   void  (*SetPaletteData)(DC, AF_PALETTE *pal, long num, long index, long waitVRT);

+   void  (*SetGammaCorrectData)(DC, AF_PALETTE *pal, long num, long index);

+   void  (*SetBank)(DC, long bank);

+

+   /* hardware cursor functions */

+   void  (*SetCursor)(DC, AF_CURSOR *cursor);

+   void  (*SetCursorPos)(DC, long x, long y);

+   void  (*SetCursorColor)(DC, unsigned char red, unsigned char green, unsigned char blue);

+   void  (*ShowCursor)(DC, long visible);

+

+   /* 2D rendering functions */

+   void  (*WaitTillIdle)(DC);

+   void  (*EnableDirectAccess)(DC);

+   void  (*DisableDirectAccess)(DC);

+   void  (*SetMix)(DC, long foreMix, long backMix);

+   void  (*Set8x8MonoPattern)(DC, unsigned char *pattern);

+   void  (*Set8x8ColorPattern)(DC, int index, unsigned long *pattern);

+   void  (*Use8x8ColorPattern)(DC, int index);

+   void  (*SetLineStipple)(DC, unsigned short stipple);

+   void  (*SetLineStippleCount)(DC, unsigned long count);

+   void  (*SetClipRect)(DC, long minx, long miny, long maxx, long maxy);

+   void  (*DrawScan)(DC, long color, long y, long x1, long x2);

+   void  (*DrawPattScan)(DC, long foreColor, long backColor, long y, long x1, long x2);

+   void  (*DrawColorPattScan)(DC, long y, long x1, long x2);

+   void  (*DrawScanList)(DC, unsigned long color, long y, long length, short *scans);

+   void  (*DrawPattScanList)(DC, unsigned long foreColor, unsigned long backColor, long y, long length, short *scans);

+   void  (*DrawColorPattScanList)(DC, long y, long length, short *scans);

+   void  (*DrawRect)(DC, unsigned long color, long left, long top, long width, long height);

+   void  (*DrawPattRect)(DC, unsigned long foreColor, unsigned long backColor, long left, long top, long width, long height);

+   void  (*DrawColorPattRect)(DC, long left, long top, long width, long height);

+   void  (*DrawLine)(DC, unsigned long color, fixed x1, fixed y1, fixed x2, fixed y2);

+   void  (*DrawStippleLine)(DC, unsigned long foreColor, unsigned long backColor, fixed x1, fixed y1, fixed x2, fixed y2);

+   void  (*DrawTrap)(DC, unsigned long color, AF_TRAP *trap);

+   void  (*DrawTri)(DC, unsigned long color, AF_FIX_POINT *v1, AF_FIX_POINT *v2, AF_FIX_POINT *v3, fixed xOffset, fixed yOffset);

+   void  (*DrawQuad)(DC, unsigned long color, AF_FIX_POINT *v1, AF_FIX_POINT *v2, AF_FIX_POINT *v3, AF_FIX_POINT *v4, fixed xOffset, fixed yOffset);

+   void  (*PutMonoImage)(DC, long foreColor, long backColor, long dstX, long dstY, long byteWidth, long srcX, long srcY, long width, long height, unsigned char *image);

+   void  (*PutMonoImageLin)(DC, long foreColor, long backColor, long dstX, long dstY, long byteWidth, long srcX, long srcY, long width, long height, long imageOfs);

+   void  (*PutMonoImageBM)(DC, long foreColor, long backColor, long dstX, long dstY, long byteWidth, long srcX, long srcY, long width, long height, long imagePhysAddr);

+   void  (*BitBlt)(DC, long left, long top, long width, long height, long dstLeft, long dstTop, long op);

+   void  (*BitBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op);

+   void  (*BitBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op);

+   void  (*BitBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op);

+   void  (*SrcTransBlt)(DC, long left, long top, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);

+   void  (*SrcTransBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);

+   void  (*SrcTransBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);

+   void  (*SrcTransBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);

+   void  (*DstTransBlt)(DC, long left, long top, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);

+   void  (*DstTransBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);

+   void  (*DstTransBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);

+   void  (*DstTransBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long width, long height, long dstLeft, long dstTop, long op, unsigned long transparent);

+   void  (*StretchBlt)(DC, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op);

+   void  (*StretchBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op);

+   void  (*StretchBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op);

+   void  (*StretchBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op);

+   void  (*SrcTransStretchBlt)(DC, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);

+   void  (*SrcTransStretchBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);

+   void  (*SrcTransStretchBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);

+   void  (*SrcTransStretchBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);

+   void  (*DstTransStretchBlt)(DC, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);

+   void  (*DstTransStretchBltSys)(DC, void *srcAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);

+   void  (*DstTransStretchBltLin)(DC, long srcOfs, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);

+   void  (*DstTransStretchBltBM)(DC, long srcPhysAddr, long srcPitch, long srcLeft, long srcTop, long srcWidth, long srcHeight, long dstLeft, long dstTop, long dstWidth, long dstHeight, long flags, long op, unsigned long transparent);

+

+   /* hardware video functions */

+   void  (*SetVideoInput)(DC, long width, long height, long format);

+   void *(*SetVideoOutput)(DC, long left, long top, long width, long height);

+   void  (*StartVideoFrame)(DC);

+   void  (*EndVideoFrame)(DC);

+

+} AF_DRIVER;

+

+

+

+#undef DC

+

+

+

+/* register data for calling real mode interrupts (DPMI format) */

+typedef union 

+{

+   struct {

+      unsigned long edi;

+      unsigned long esi;

+      unsigned long ebp;

+      unsigned long res;

+      unsigned long ebx;

+      unsigned long edx;

+      unsigned long ecx;

+      unsigned long eax;

+   } d;

+   struct {

+      unsigned short di, di_hi;

+      unsigned short si, si_hi;

+      unsigned short bp, bp_hi;

+      unsigned short res, res_hi;

+      unsigned short bx, bx_hi;

+      unsigned short dx, dx_hi;

+      unsigned short cx, cx_hi;

+      unsigned short ax, ax_hi;

+      unsigned short flags;

+      unsigned short es;

+      unsigned short ds;

+      unsigned short fs;

+      unsigned short gs;

+      unsigned short ip;

+      unsigned short cs;

+      unsigned short sp;

+      unsigned short ss;

+   } x;

+   struct {

+      unsigned char edi[4];

+      unsigned char esi[4];

+      unsigned char ebp[4];

+      unsigned char res[4];

+      unsigned char bl, bh, ebx_b2, ebx_b3;

+      unsigned char dl, dh, edx_b2, edx_b3;

+      unsigned char cl, ch, ecx_b2, ecx_b3;

+      unsigned char al, ah, eax_b2, eax_b3;

+   } h;

+} RM_REGS;

+

+

+

+/* our API extensions use 32 bit magic numbers */

+#define FAF_ID(a,b,c,d)    ((a<<24) | (b<<16) | (c<<8) | d)

+

+

+

+/* ID code and magic return value for initialising the extensions */

+#define FAFEXT_INIT     FAF_ID('I','N','I','T')

+#define FAFEXT_MAGIC    FAF_ID('E','X', 0,  0)

+#define FAFEXT_MAGIC1   FAF_ID('E','X','0','1')

+

+

+

+/* extension providing a hardware-specific way to access video memory */

+#define FAFEXT_HWPTR    FAF_ID('H','P','T','R')

+

+

+#if (defined __i386__) && (!defined NO_HWPTR)

+

+

+/* use seg+offset far pointers on i386 */

+typedef struct FAF_HWPTR

+{

+   int sel;

+   unsigned long offset;

+} FAF_HWPTR;

+

+#include <sys/farptr.h>

+#include <sys/segments.h>

+

+#define hwptr_init(ptr, addr)                \

+   if ((addr) && (!(ptr).sel)) {             \

+      (ptr).sel = _my_ds();                  \

+      (ptr).offset = (unsigned long)(addr);  \

+   }

+

+#define hwptr_pokeb(ptr, off, val)     _farpokeb((ptr).sel, (ptr).offset+(off), (val))

+#define hwptr_pokew(ptr, off, val)     _farpokew((ptr).sel, (ptr).offset+(off), (val))

+#define hwptr_pokel(ptr, off, val)     _farpokel((ptr).sel, (ptr).offset+(off), (val))

+

+#define hwptr_peekb(ptr, off)          _farpeekb((ptr).sel, (ptr).offset+(off))

+#define hwptr_peekw(ptr, off)          _farpeekw((ptr).sel, (ptr).offset+(off))

+#define hwptr_peekl(ptr, off)          _farpeekl((ptr).sel, (ptr).offset+(off))

+

+#define hwptr_select(ptr)              _farsetsel((ptr).sel)

+#define hwptr_unselect(ptr)            (ptr).sel = _fargetsel()

+

+#define hwptr_nspokeb(ptr, off, val)   _farnspokeb((ptr).offset+(off), (val))

+#define hwptr_nspokew(ptr, off, val)   _farnspokew((ptr).offset+(off), (val))

+#define hwptr_nspokel(ptr, off, val)   _farnspokel((ptr).offset+(off), (val))

+

+#define hwptr_nspeekb(ptr, off)        _farnspeekb((ptr).offset+(off))

+#define hwptr_nspeekw(ptr, off)        _farnspeekw((ptr).offset+(off))

+#define hwptr_nspeekl(ptr, off)        _farnspeekl((ptr).offset+(off))

+

+

+#else

+

+

+/* use regular C pointers on other platforms or if hwptr is disabled */

+typedef void *FAF_HWPTR;

+

+#define hwptr_init(ptr, addr)          ptr = (FAF_HWPTR)(addr)

+

+#define hwptr_pokeb(ptr, off, val)     *((volatile unsigned char *)((ptr)+(off))) = (val)

+#define hwptr_pokew(ptr, off, val)     *((volatile unsigned short *)((ptr)+(off))) = (val)

+#define hwptr_pokel(ptr, off, val)     *((volatile unsigned long *)((ptr)+(off))) = (val)

+

+#define hwptr_peekb(ptr, off)          (*((volatile unsigned char *)((ptr)+(off))))

+#define hwptr_peekw(ptr, off)          (*((volatile unsigned short *)((ptr)+(off))))

+#define hwptr_peekl(ptr, off)          (*((volatile unsigned long *)((ptr)+(off))))

+

+#define hwptr_select(ptr)

+#define hwptr_unselect(ptr)            (ptr) = NULL

+

+#define hwptr_nspokeb(ptr, off, val)   *((volatile unsigned char *)((ptr)+(off))) = (val)

+#define hwptr_nspokew(ptr, off, val)   *((volatile unsigned short *)((ptr)+(off))) = (val)

+#define hwptr_nspokel(ptr, off, val)   *((volatile unsigned long *)((ptr)+(off))) = (val)

+

+#define hwptr_nspeekb(ptr, off)        (*((volatile unsigned char *)((ptr)+(off))))

+#define hwptr_nspeekw(ptr, off)        (*((volatile unsigned short *)((ptr)+(off))))

+#define hwptr_nspeekl(ptr, off)        (*((volatile unsigned long *)((ptr)+(off))))

+

+

+#endif      /* hwptr structure definitions */

+

+

+/* interface structure containing hardware pointer data */

+typedef struct FAF_HWPTR_DATA

+{

+   FAF_HWPTR IOMemMaps[4];

+   FAF_HWPTR BankedMem;

+   FAF_HWPTR LinearMem;

+} FAF_HWPTR_DATA;

+

+

+

+/* extension providing a way for the config program to set driver variables */

+#define FAFEXT_CONFIG   FAF_ID('C','O','N','F')

+

+

+

+/* config variable, so the install program can communicate with the driver */

+typedef struct FAF_CONFIG_DATA

+{

+   unsigned long id;

+   unsigned long value;

+} FAF_CONFIG_DATA;

+

+

+

+/* config variable ID used to enable/disable specific hardware functions */

+#define FAF_CFG_FEATURES    FAF_ID('F','E','A','T')

+

+

+

+/* bitfield values for the FAF_CFG_FEATURES variable */

+#define fafLinear                      0x00000001

+#define fafBanked                      0x00000002

+#define fafHWCursor                    0x00000004

+#define fafDrawScan                    0x00000008

+#define fafDrawPattScan                0x00000010

+#define fafDrawColorPattScan           0x00000020

+#define fafDrawScanList                0x00000040

+#define fafDrawPattScanList            0x00000080

+#define fafDrawColorPattScanList       0x00000100

+#define fafDrawRect                    0x00000200

+#define fafDrawPattRect                0x00000400

+#define fafDrawColorPattRect           0x00000800

+#define fafDrawLine                    0x00001000

+#define fafDrawStippleLine             0x00002000

+#define fafDrawTrap                    0x00004000

+#define fafDrawTri                     0x00008000

+#define fafDrawQuad                    0x00010000

+#define fafPutMonoImage                0x00020000

+#define fafPutMonoImageLin             0x00040000

+#define fafPutMonoImageBM              0x00080000

+#define fafBitBlt                      0x00100000

+#define fafBitBltSys                   0x00200000

+#define fafBitBltLin                   0x00400000

+#define fafBitBltBM                    0x00800000

+#define fafSrcTransBlt                 0x01000000

+#define fafSrcTransBltSys              0x02000000

+#define fafSrcTransBltLin              0x04000000

+#define fafSrcTransBltBM               0x08000000

+

+

+

+/* helper function for enabling/disabling driver routines */

+void fixup_feature_list(AF_DRIVER *af, unsigned long flags);

+

+

+

+/* extension providing libc exports (needed for Nucleus compatibility) */

+#define FAFEXT_LIBC     FAF_ID('L','I','B','C')

+

+

+typedef struct FAF_LIBC_DATA

+{

+   long  size;

+   void  (*abort)();

+   void *(*calloc)(unsigned long num_elements, unsigned long size);

+   void  (*exit)(int status);

+   void  (*free)(void *ptr);

+   char *(*getenv)(const char *name);

+   void *(*malloc)(unsigned long size);

+   void *(*realloc)(void *ptr, unsigned long size);

+   int   (*system)(const char *s);

+   int   (*putenv)(const char *val);

+   int   (*open)(const char *file, int mode, int permissions);

+   int   (*access)(const char *filename, int flags);

+   int   (*close)(int fd);

+   int   (*lseek)(int fd, int offset, int whence);

+   int   (*read)(int fd, void *buffer, unsigned long count);

+   int   (*unlink)(const char *file);

+   int   (*write)(int fd, const void *buffer, unsigned long count);

+   int   (*isatty)(int fd);

+   int   (*remove)(const char *file);

+   int   (*rename)(const char *oldname, const char *newname);

+   unsigned int (*time)(unsigned int *t);

+   void  (*setfileattr)(const char *filename, unsigned attrib);

+   unsigned long (*getcurrentdate)();

+} FAF_LIBC_DATA;

+

+

+

+/* extension providing pmode exports (needed for Nucleus compatibility) */

+#define FAFEXT_PMODE    FAF_ID('P','M','O','D')

+

+

+

+/* It has to be said, having this many exported functions is truly insane.

+ * How on earth can SciTech need this much crap just to write a simple

+ * video driver? Unfortunately we have to include it all in order to 

+ * support their Nucleus drivers...

+ */

+

+typedef union

+{

+   struct {

+      unsigned long eax, ebx, ecx, edx, esi, edi, cflag;

+   } e;

+   struct {

+      unsigned short ax, ax_hi;

+      unsigned short bx, bx_hi;

+      unsigned short cx, cx_hi;

+      unsigned short dx, dx_hi;

+      unsigned short si, si_hi;

+      unsigned short di, di_hi;

+      unsigned short cflag, cflag_hi;

+   } x;

+   struct {

+      unsigned char   al, ah; unsigned short ax_hi;

+      unsigned char   bl, bh; unsigned short bx_hi;

+      unsigned char   cl, ch; unsigned short cx_hi;

+      unsigned char   dl, dh; unsigned short dx_hi;

+   } h;

+} SILLY_SCITECH_REGS;

+

+

+

+typedef struct

+{

+   unsigned short es, cs, ss, ds, fs, gs;

+} SILLY_SCITECH_SREGS;

+

+

+

+typedef struct FAF_PMODE_DATA

+{

+   long  size;

+   int   (*getModeType)();

+   void *(*getBIOSPointer)();

+   void *(*getA0000Pointer)();

+   void *(*mapPhysicalAddr)(unsigned long base, unsigned long limit);

+   void *(*mallocShared)(long size);

+   int   (*mapShared)(void *ptr);

+   void  (*freeShared)(void *ptr);

+   void *(*mapToProcess)(void *linear, unsigned long limit);

+   void  (*loadDS)();

+   void  (*saveDS)();

+   void *(*mapRealPointer)(unsigned int r_seg, unsigned int r_off);

+   void *(*allocRealSeg)(unsigned int size, unsigned int *r_seg, unsigned int *r_off);

+   void  (*freeRealSeg)(void *mem);

+   void *(*allocLockedMem)(unsigned int size, unsigned long *physAddr);

+   void  (*freeLockedMem)(void *p);

+   void  (*callRealMode)(unsigned int seg, unsigned int off, SILLY_SCITECH_REGS *regs, SILLY_SCITECH_SREGS *sregs);

+   int   (*int86)(int intno, SILLY_SCITECH_REGS *in, SILLY_SCITECH_REGS *out);

+   int   (*int86x)(int intno, SILLY_SCITECH_REGS *in, SILLY_SCITECH_REGS *out, SILLY_SCITECH_SREGS *sregs);

+   void  (*DPMI_int86)(int intno, RM_REGS *regs);

+   void  (*segread)(SILLY_SCITECH_SREGS *sregs);

+   int   (*int386)(int intno, SILLY_SCITECH_REGS *in, SILLY_SCITECH_REGS *out);

+   int   (*int386x)(int intno, SILLY_SCITECH_REGS *in, SILLY_SCITECH_REGS *out, SILLY_SCITECH_SREGS *sregs);

+   void  (*availableMemory)(unsigned long *physical, unsigned long *total);

+   void *(*getVESABuf)(unsigned int *len, unsigned int *rseg, unsigned int *roff);

+   long  (*getOSType)();

+   void  (*fatalError)(const char *msg);

+   void  (*setBankA)(int bank);

+   void  (*setBankAB)(int bank);

+   const char *(*getCurrentPath)();

+   const char *(*getVBEAFPath)();

+   const char *(*getNucleusPath)();

+   const char *(*getNucleusConfigPath)();

+   const char *(*getUniqueID)();

+   const char *(*getMachineName)();

+   int   (*VF_available)();

+   void *(*VF_init)(unsigned long baseAddr, int bankSize, int codeLen, void *bankFunc);

+   void  (*VF_exit)();

+   int   (*kbhit)();

+   int   (*getch)();

+   int   (*openConsole)();

+   int   (*getConsoleStateSize)();

+   void  (*saveConsoleState)(void *stateBuf, int console_id);

+   void  (*restoreConsoleState)(const void *stateBuf, int console_id);

+   void  (*closeConsole)(int console_id);

+   void  (*setOSCursorLocation)(int x, int y);

+   void  (*setOSScreenWidth)(int width, int height);

+   int   (*enableWriteCombine)(unsigned long base, unsigned long length);

+   void  (*backslash)(char *filename);

+} FAF_PMODE_DATA;

+

+

+

+/* assorted helper functions */

+void trace_putc(char c);

+void trace_printf(char *msg, ...);

+

+void rm_int(int num, RM_REGS *regs);

+

+int allocate_dos_memory(int size, int *sel);

+void free_dos_memory(int sel);

+

+int allocate_selector(int addr, int size);

+void free_selector(int sel);

+

+int get_vesa_info(int *vram_size, unsigned long *linear_addr, void (*callback)(int vesa_num, int linear, int w, int h, int bpp, int bytes_per_scanline, int redsize, int redpos, int greensize, int greenpos, int bluesize, int bluepos, int rsvdsize, int rsvdpos));

+

+

+

+/* read_vga_register:

+ *  Reads the contents of a VGA hardware register.

+ */

+extern inline int read_vga_register(int port, int index)

+{

+   if (port==0x3C0)

+      inportb(0x3DA); 

+

+   outportb(port, index);

+   return inportb(port+1);

+}

+

+

+

+/* write_vga_register:

+ *  Writes a byte to a VGA hardware register.

+ */

+extern inline void write_vga_register(int port, int index, int v) 

+{

+   if (port==0x3C0) {

+      inportb(0x3DA);

+      outportb(port, index);

+      outportb(port, v);

+   }

+   else {

+      outportb(port, index);

+      outportb(port+1, v);

+   }

+}

+

+

+

+/* alter_vga_register:

+ *  Alters specific bits of a VGA hardware register.

+ */

+extern inline void alter_vga_register(int port, int index, int mask, int v)

+{

+   int temp;

+   temp = read_vga_register(port, index);

+   temp &= (~mask);

+   temp |= (v & mask);

+   write_vga_register(port, index, temp);

+}

+

+

+

+/* test_vga_register:

+ *  Tests whether specific bits of a VGA hardware register can be changed.

+ */

+extern inline int test_vga_register(int port, int index, int mask)

+{

+   int old, nw1, nw2;

+

+   old = read_vga_register(port, index);

+   write_vga_register(port, index, old & (~mask));

+   nw1 = read_vga_register(port, index) & mask;

+   write_vga_register(port, index, old | mask);

+   nw2 = read_vga_register(port, index) & mask;

+   write_vga_register(port, index, old);

+

+   return ((nw1==0) && (nw2==mask));

+}

+

+

+

+/* test_register:

+ *  Tests whether specific bits of a hardware register can be changed.

+ */

+extern inline int test_register(int port, int mask)

+{

+   int old, nw1, nw2;

+

+   old = inportb(port);

+   outportb(port, old & (~mask));

+   nw1 = inportb(port) & mask;

+   outportb(port, old | mask);

+   nw2 = inportb(port) & mask;

+   outportb(port, old);

+

+   return ((nw1==0) && (nw2==mask));

+}

+

+

+

+/* PCI routines added by SET */

+#define PCIConfigurationAddress  0xCF8

+#define PCIConfigurationData     0xCFC

+#define PCIEnable                0x80000000

+

+extern int FindPCIDevice(int deviceID, int vendorID, int deviceIndex, int *handle);

+

+extern inline unsigned PCIReadLong(int handle, int index)

+{

+   outportl(PCIConfigurationAddress, PCIEnable | handle | index);

+   return inportl(PCIConfigurationData);

+}

diff --git a/src/mesa/drivers/dos/vbeafint.h b/src/mesa/drivers/dos/vbeafint.h
new file mode 100644
index 0000000000..5e636f08d3
--- /dev/null
+++ b/src/mesa/drivers/dos/vbeafint.h
@@ -0,0 +1,50 @@
+/*

+ * 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 : dborca@yahoo.com

+ *  Web   : http://www.geocities.com/dborca

+ */

+

+

+#ifndef VBEAFINT_H_included

+#define VBEAFINT_H_included

+

+#include "vbeaf.h"

+

+int af_init (char *filename);

+void af_exit (void);

+

+AF_MODE_INFO *af_getmode (int i, int *granularity);

+int af_setup_mode (int mode, int caps);

+int af_enter_mode (int mode, int width, int height);

+int af_setup_buffer (int x, int y);

+int af_flip (void);

+

+void *af_getprim (int primitive);

+

+#endif

diff --git a/src/mesa/drivers/dos/video.c b/src/mesa/drivers/dos/video.c
new file mode 100644
index 0000000000..5c2c84a84f
--- /dev/null
+++ b/src/mesa/drivers/dos/video.c
@@ -0,0 +1,625 @@
+/*

+ * 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 v0.3 for Mesa 4.0

+ *

+ *  Copyright (C) 2002 - Borca Daniel

+ *  Email : dborca@yahoo.com

+ *  Web   : http://www.geocities.com/dborca

+ */

+

+

+#include <dpmi.h>

+#include <stdlib.h>

+#include <string.h>

+#include <stubinfo.h>

+#include <sys/exceptn.h>

+#include <sys/segments.h>

+#include <sys/farptr.h>

+

+#include "video.h"

+#include "dpmiint.h"

+

+

+

+typedef unsigned char word8;

+typedef unsigned short word16;

+typedef unsigned long word32;

+

+typedef struct vl_mode {

+        int mode;

+        int xres, yres;

+        int scanlen;

+        int bpp;

+} vl_mode;

+

+#define _16_ *(word16 *)&

+#define _32_ *(word32 *)&

+

+static int init;

+

+static vl_mode modes[64];

+

+/* card specific: valid forever */

+static word16 vesa_ver;

+static word32 hw_granularity, hw_linearfb;

+static unsigned int gran_shift, gran_mask;

+/* based upon mode specific data: valid entire session */

+static int video_selector, banked_selector, linear_selector;

+static int video_scanlen, video_bypp;

+/* valid until next buffer */

+static int current_offset, current_delta, current_width;

+

+

+

+/* lookup table for scaling 5 bit colors up to 8 bits */

+static int _rgb_scale_5[32] =

+{

+   0,   8,   16,  24,  32,  41,  49,  57,

+   65,  74,  82,  90,  98,  106, 115, 123,

+   131, 139, 148, 156, 164, 172, 180, 189,

+   197, 205, 213, 222, 230, 238, 246, 255

+};

+

+/* lookup table for scaling 6 bit colors up to 8 bits */

+static int _rgb_scale_6[64] =

+{

+   0,   4,   8,   12,  16,  20,  24,  28,

+   32,  36,  40,  44,  48,  52,  56,  60,

+   64,  68,  72,  76,  80,  85,  89,  93,

+   97,  101, 105, 109, 113, 117, 121, 125,

+   129, 133, 137, 141, 145, 149, 153, 157,

+   161, 165, 170, 174, 178, 182, 186, 190,

+   194, 198, 202, 206, 210, 214, 218, 222,

+   226, 230, 234, 238, 242, 246, 250, 255

+};

+

+

+

+/*

+ * virtual clearing

+ */

+void (*vl_clear) (void *buffer, int len, int color);

+

+#define v_clear15 v_clear16

+extern void v_clear16 (void *buffer, int len, int color);

+extern void v_clear32 (void *buffer, int len, int color);

+__asm__("\n\

+		.text				\n\

+		.balign	4			\n\

+		.global	_v_clear16		\n\

+_v_clear16:					\n\

+		movl	12(%esp), %eax		\n\

+		pushw	%ax			\n\

+		pushw	%ax			\n\

+		popl	%eax			\n\

+		jmp	_v_clear_common		\n\

+		.balign	4			\n\

+		.global	_v_clear32		\n\

+_v_clear32:					\n\

+		movl	12(%esp), %eax		\n\

+		.balign	4			\n\

+_v_clear_common:				\n\

+		movl	8(%esp), %ecx		\n\

+		movl	4(%esp), %edx		\n\

+		shrl	$2, %ecx		\n\

+	0:					\n\

+		.balign	4			\n\

+		movl	%eax, (%edx)		\n\

+		addl	$4, %edx		\n\

+		decl	%ecx			\n\

+		jnz	0b			\n\

+		ret");

+extern void v_clear24 (void *buffer, int len, int color);

+__asm__("\n\

+		.text				\n\

+		.balign	4			\n\

+		.global	_v_clear24		\n\

+_v_clear24:					\n\

+		movl	8(%esp), %edx		\n\

+		movl	$0xaaaaaaab, %eax	\n\

+		mull	%edx			\n\

+		movl	12(%esp), %eax		\n\

+		movl	%edx, %ecx		\n\

+		movl	4(%esp), %edx		\n\

+		pushl	%ebx			\n\

+		shrl	%ecx			\n\

+		movb	18(%esp), %bl		\n\

+		.balign	4			\n\

+	0:					\n\

+		movw	%ax, (%edx)		\n\

+		movb	%bl, 2(%edx)		\n\

+		addl	$3, %edx		\n\

+		decl	%ecx			\n\

+		jnz	0b			\n\

+		popl	%ebx			\n\

+		ret");

+

+

+

+/*

+ * virtual rectangle clearing

+ */

+void vl_rect (void *buffer, int x, int y, int width, int height, int color)

+{

+ int offset = y*current_width + x;

+ int delta = current_width - width;

+

+ for (y=0; y<height; y++) {

+     for (x=0; x<width; x++, offset++) {

+         vl_putpixel(buffer, offset, color);

+     }

+     offset += delta;

+ }

+}

+

+

+

+/*

+ * virtual dumping:

+ */

+void *(*vl_flip) (void *buffer, int width, int height);

+

+extern void *b_dump_virtual (void *buffer, int width, int height);

+__asm__("\n\

+		.text				\n\

+		.balign	4			\n\

+		.global	_b_dump_virtual		\n\

+_b_dump_virtual:				\n\

+		pushl	%ebx			\n\

+		pushl	%esi			\n\

+		pushl	%edi			\n\

+		pushl	%ebp			\n\

+		movl	_video_selector, %fs	\n\

+		movl	4*4+4+0(%esp), %esi	\n\

+		movl	_hw_granularity, %ebp	\n\

+		xorl	%edx, %edx		\n\

+		movl	_current_offset, %eax	\n\

+		divl	%ebp			\n\

+		movl	%edx, %edi		\n\

+		pushl	%eax			\n\

+		movl	%eax, %edx		\n\

+		xorl	%ebx, %ebx		\n\

+		movw	$0x4f05, %ax		\n\

+		int	$0x10			\n\

+		movl	_current_delta, %ebx	\n\

+		movl	5*4+4+4(%esp), %ecx	\n\

+		movl	5*4+4+8(%esp), %edx	\n\

+		shrl	$2, %ecx		\n\

+		.balign	4			\n\

+	0:					\n\

+		pushl	%ecx			\n\

+		.balign	4			\n\

+	1:					\n\

+		cmpl	%ebp, %edi		\n\

+		jb	2f			\n\

+		pushl	%ebx			\n\

+		pushl	%edx			\n\

+		incl	12(%esp)		\n\

+		movw	$0x4f05, %ax		\n\

+		movl	12(%esp), %edx		\n\

+		xorl	%ebx, %ebx		\n\

+		int	$0x10			\n\

+		popl	%edx			\n\

+		popl	%ebx			\n\

+		subl	%ebp, %edi		\n\

+	2:					\n\

+		movl	(%esi), %eax		\n\

+		addl	$4, %esi		\n\

+		movl	%eax, %fs:(%edi)	\n\

+		addl	$4, %edi		\n\

+		decl	%ecx			\n\

+		jnz	1b			\n\

+		popl	%ecx			\n\

+		addl	%ebx, %edi		\n\

+		decl	%edx			\n\

+		jnz	0b			\n\

+		popl	%eax			\n\

+		popl	%ebp			\n\

+		popl	%edi			\n\

+		popl	%esi			\n\

+		popl	%ebx			\n\

+		ret");

+extern void *l_dump_virtual (void *buffer, int width, int height);

+__asm__("\n\

+		.text				\n\

+		.balign	4			\n\

+		.global	_l_dump_virtual		\n\

+_l_dump_virtual:				\n\

+		pushl	%ebx			\n\

+		pushl	%esi			\n\

+		pushl	%edi			\n\

+		movl	_video_selector, %fs	\n\

+		movl	3*4+4+0(%esp), %esi	\n\

+		movl	_current_offset, %edi	\n\

+		movl	3*4+4+4(%esp), %ecx	\n\

+		movl	3*4+4+8(%esp), %edx	\n\

+		movl	_current_delta, %ebx	\n\

+		shrl	$2, %ecx		\n\

+		.balign	4			\n\

+	0:					\n\

+		pushl	%ecx			\n\

+		.balign	4			\n\

+	1:					\n\

+		movl	(%esi), %eax		\n\

+		addl	$4, %esi		\n\

+		movl	%eax, %fs:(%edi)	\n\

+		addl	$4, %edi		\n\

+		decl	%ecx			\n\

+		jnz	1b			\n\

+		popl	%ecx			\n\

+		addl	%ebx, %edi		\n\

+		decl	%edx			\n\

+		jnz	0b			\n\

+		popl	%edi			\n\

+		popl	%esi			\n\

+		popl	%ebx			\n\

+		ret");

+

+

+

+/*

+ * mix RGBA components

+ */

+int (*vl_mixrgba) (const unsigned char rgba[]);

+ 

+#define vl_mixrgba15 vl_mixrgb15

+#define vl_mixrgba16 vl_mixrgb16

+#define vl_mixrgba24 vl_mixrgb24

+static int vl_mixrgba32 (const unsigned char rgba[])

+{

+ return (rgba[3]<<24)|(rgba[0]<<16)|(rgba[1]<<8)|(rgba[2]);

+}

+

+

+

+/*

+ * mix RGB components

+ */

+int (*vl_mixrgb) (const unsigned char rgb[]);

+ 

+static int vl_mixrgb15 (const unsigned char rgb[])

+{

+ return ((rgb[0]>>3)<<10)|((rgb[1]>>3)<<5)|(rgb[2]>>3);

+}

+static int vl_mixrgb16 (const unsigned char rgb[])

+{

+ return ((rgb[0]>>3)<<11)|((rgb[1]>>2)<<5)|(rgb[2]>>3);

+}

+#define vl_mixrgb24 vl_mixrgb32

+static int vl_mixrgb32 (const unsigned char rgb[])

+{

+ return (rgb[0]<<16)|(rgb[1]<<8)|(rgb[2]);

+}

+

+

+

+/*

+ * vl_putpixel*

+ */

+void (*vl_putpixel) (void *buffer, int offset, int color);

+ 

+#define v_putpixel15 v_putpixel16

+extern void v_putpixel16 (void *buffer, int offset, int color);

+__asm__("\n\

+		.text				\n\

+		.balign	4			\n\

+		.global	_v_putpixel16		\n\

+_v_putpixel16:					\n\

+		movl	8(%esp), %edx		\n\

+		shll	%edx			\n\

+		movl	12(%esp), %eax		\n\

+		addl	4(%esp), %edx		\n\

+		movw	%ax, (%edx)		\n\

+		ret");

+extern void v_putpixel24 (void *buffer, int offset, int color);

+__asm__("\n\

+		.text				\n\

+		.balign	4			\n\

+		.global	_v_putpixel24		\n\

+_v_putpixel24:					\n\

+		movl	8(%esp), %edx		\n\

+		leal	(%edx, %edx, 2), %edx	\n\

+		movl	12(%esp), %eax		\n\

+		addl	4(%esp), %edx		\n\

+		movw	%ax, (%edx)		\n\

+		shrl	$16, %eax		\n\

+		movb	%al, 2(%edx)		\n\

+		ret");

+extern void v_putpixel32 (void *buffer, int offset, int color);

+__asm__("\n\

+		.text				\n\

+		.balign	4			\n\

+		.global	_v_putpixel32		\n\

+_v_putpixel32:					\n\

+		movl	8(%esp), %edx		\n\

+		shll	$2, %edx		\n\

+		movl	12(%esp), %eax		\n\

+		addl	4(%esp), %edx		\n\

+		movl	%eax, (%edx)		\n\

+		ret");

+

+

+

+/*

+ * get pixel and decompose R, G, B, A

+ */

+void (*vl_getrgba) (void *buffer, int offset, unsigned char rgba[4]);

+

+/*

+ * v_getrgba*

+ */

+static void v_getrgba15 (void *buffer, int offset, unsigned char rgba[4])

+{

+ int c = ((word16 *)buffer)[offset];

+ rgba[0] = _rgb_scale_5[(c >> 10) & 0x1F];

+ rgba[1] = _rgb_scale_5[(c >> 5) & 0x1F];

+ rgba[2] = _rgb_scale_5[c & 0x1F];

+ rgba[3] = 255;

+}

+static void v_getrgba16 (void *buffer, int offset, unsigned char rgba[4])

+{

+ int c = ((word16 *)buffer)[offset];

+ rgba[0] = _rgb_scale_5[(c >> 11) & 0x1F];

+ rgba[1] = _rgb_scale_6[(c >> 5) & 0x3F];

+ rgba[2] = _rgb_scale_5[c & 0x1F];

+ rgba[3] = 255;

+}

+static void v_getrgba24 (void *buffer, int offset, unsigned char rgba[4])

+{

+ int c = *(word32 *)((long)buffer+offset*3);

+ rgba[0] = c >> 16;

+ rgba[1] = c >> 8;

+ rgba[2] = c;

+ rgba[3] = 255;

+}

+static void v_getrgba32 (void *buffer, int offset, unsigned char rgba[4])

+{

+ int c = ((word32 *)buffer)[offset];

+ rgba[0] = c >> 16;

+ rgba[1] = c >> 8;

+ rgba[2] = c; 

+ rgba[3] = c >> 24;

+}

+

+

+

+/*

+ * sync buffer with video hardware

+ */

+void *vl_sync_buffer (void *buffer, int x, int y, int width, int height)

+{

+ void *newbuf;

+

+ if (width&3) {

+    return NULL;

+ } else {

+    current_offset = video_scanlen * y + video_bypp * x;

+    if ((newbuf=realloc(buffer, width*height*video_bypp))!=NULL) {

+       current_width = width;

+       current_delta = video_scanlen - video_bypp * width;

+       return newbuf;

+    } else {

+       return NULL;

+    }

+ }

+}

+

+

+

+/*

+ * attempts to detect VESA and video modes

+ */

+static word16 vl_vesa_init (void)

+{

+ __dpmi_regs r;

+ unsigned short *p;

+ vl_mode *q;

+ char vesa_info[512], tmp[512];

+ int maxsize = 0;

+

+ _farpokel(_stubinfo->ds_selector, 0, 0x32454256);

+ r.x.ax = 0x4f00;

+ r.x.di = 0;

+ r.x.es = _stubinfo->ds_segment;

+ __dpmi_int(0x10, &r);

+ if (r.x.ax==0x004f) {

+    movedata(_stubinfo->ds_selector, 0, _my_ds(), (unsigned)vesa_info, 512);

+    if ((_32_ vesa_info[0])==0x41534556) {

+       p = (unsigned short *)(((_16_ vesa_info[0x10])<<4) + (_16_ vesa_info[0x0e]));

+       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[0x19]) {

+                  case 16:

+                       q->bpp = tmp[0x1f] + tmp[0x21] + tmp[0x23];

+                       break;

+                  case 15:

+                  case 24:

+                  case 32:

+                       q->bpp = tmp[0x19];

+                       break;

+                  default:

+                       q->bpp = 0;

+           }

+           if ((r.x.ax==0x004f)&&((tmp[0]&0x11)==0x11)&&q->bpp) {

+              q->xres = _16_ tmp[0x12];

+              q->yres = _16_ tmp[0x14];

+              q->scanlen = _16_ tmp[0x10];

+              hw_granularity = (_16_ tmp[4])<<10;

+              if (tmp[0]&0x80) {

+                 *(q+1) = *q++;

+                 hw_linearfb = _32_ tmp[0x28];

+                 q->mode |= 0x4000;

+              }

+              if (maxsize<(q->scanlen*q->yres)) {

+                 maxsize = q->scanlen*q->yres;

+              }

+              q++;

+           }

+       } while (!0);

+

+       if (hw_linearfb) {

+          maxsize = ((maxsize+0xfffUL)&~0xfffUL);

+          if (_create_selector(&linear_selector, hw_linearfb, maxsize)) {

+             return 0;

+          }

+       }

+       if (_create_selector(&banked_selector, 0xa0000, hw_granularity)) {

+          _remove_selector(&linear_selector);

+          return 0;

+       }

+

+       return _16_ vesa_info[4];

+    }

+ }

+

+ return 0;

+}

+

+

+

+/*

+ * setup mode

+ */

+static int vl_setup_mode (vl_mode *p)

+{

+ if (p->mode&0x4000) {

+    video_selector = linear_selector;

+    vl_flip = l_dump_virtual;

+ } else {

+    { int n; for (gran_shift=0, n=hw_granularity; n; gran_shift++, n>>=1) ; }

+    gran_mask = (1<<(--gran_shift)) - 1;

+    if (hw_granularity!=(gran_mask+1)) {

+       return -1;

+    }

+    video_selector = banked_selector;

+    vl_flip = b_dump_virtual;

+ }

+

+#define INITPTR(bpp) \

+        vl_putpixel = v_putpixel##bpp; \

+        vl_getrgba = v_getrgba##bpp;   \

+        vl_clear = v_clear##bpp;       \

+        vl_mixrgb = vl_mixrgb##bpp;    \

+        vl_mixrgba = vl_mixrgba##bpp;

+

+ switch (p->bpp) {

+        case 15:

+             INITPTR(15);

+             break;

+        case 16:

+             INITPTR(16);

+             break;

+        case 24:

+             INITPTR(24);

+             break;

+        case 32:

+             INITPTR(32);

+             break;

+        default:

+             return -1;

+ }

+

+#undef INITPTR

+

+ video_bypp = (p->bpp+7)/8;

+ video_scanlen = p->scanlen;

+

+ return 0;

+}

+

+

+

+/*

+ * shutdown the video engine

+ */

+void vl_video_exit (int textmode)

+{

+ if (init) {

+    if (textmode) {

+       __asm__("movw $0x3, %%ax; int  $0x10":::"%eax");

+    }

+    

+    _remove_selector(&linear_selector);

+    _remove_selector(&banked_selector);

+   

+    init = !init;

+ }

+}

+

+

+

+/*

+ * initialize video engine

+ *

+ * success: 0

+ * failure: -1

+ */

+int vl_video_init (int width, int height, int bpp)

+{

+ vl_mode *p, *q;

+ unsigned int min;

+

+ /* check for prior initialization */

+ if (init) {

+    return 0;

+ }

+

+ /* initialize hardware */

+ if (!(vesa_ver=vl_vesa_init())) {

+    return -1;

+ }

+ init = !init;

+

+ /* search for a mode that fits our request */

+ for (min=-1, p=NULL, q=modes; 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;

+        }

+     }

+ }

+

+ if (p) {

+    vl_setup_mode(p);

+    __asm__("movw $0x4f02, %%ax; int  $0x10"::"b"(p->mode):"%eax");

+    return 0;

+ } else {

+    /* no suitable mode found, abort */

+    vl_video_exit(0);

+    return -1;

+ }

+}

diff --git a/src/mesa/drivers/dos/video.h b/src/mesa/drivers/dos/video.h
new file mode 100644
index 0000000000..ff81ac9d2e
--- /dev/null
+++ b/src/mesa/drivers/dos/video.h
@@ -0,0 +1,52 @@
+/*

+ * 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 v0.3 for Mesa 4.0

+ *

+ *  Copyright (C) 2002 - Borca Daniel

+ *  Email : dborca@yahoo.com

+ *  Web   : http://www.geocities.com/dborca

+ */

+

+

+#ifndef VIDEO_H_included

+#define VIDEO_H_included

+

+int vl_video_init (int width, int height, int bpp);

+void vl_video_exit (int textmode);

+

+void *vl_sync_buffer (void *buffer, int x, int y, int width, int height);

+

+extern void (*vl_clear) (void *buffer, int len, int color);

+void vl_rect (void *buffer, int x, int y, int width, int height, int color);

+

+void *(*vl_flip) (void *buffer, int width, int height);

+

+extern int (*vl_mixrgba) (const unsigned char rgba[]);

+extern int (*vl_mixrgb) (const unsigned char rgb[]);

+extern void (*vl_putpixel) (void *buffer, int offset, int color);

+extern void (*vl_getrgba) (void *buffer, int offset, unsigned char rgba[4]);

+

+#endif