From 642699a19f1c07336a6fadacd6d5a9028f5d346f Mon Sep 17 00:00:00 2001 From: Brian Paul Date: Mon, 16 Jun 2003 14:32:44 +0000 Subject: DOS updates for new tree (Daniel Borca) --- src/mesa/drivers/dos/dpmi.c | 296 ++++++++++++++++++++++---------------------- 1 file changed, 148 insertions(+), 148 deletions(-) (limited to 'src/mesa/drivers/dos/dpmi.c') diff --git a/src/mesa/drivers/dos/dpmi.c b/src/mesa/drivers/dos/dpmi.c index 17c005a9e5..f9943ea60b 100644 --- a/src/mesa/drivers/dos/dpmi.c +++ b/src/mesa/drivers/dos/dpmi.c @@ -1,148 +1,148 @@ -/* - * 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 v1.3 for Mesa - * - * Copyright (C) 2002 - Borca Daniel - * Email : dborca@yahoo.com - * Web : http://www.geocities.com/dborca - */ - - -#include - -#include "internal.h" - - - -#ifndef MAX -#define MAX(x, y) (((x)<(y))?(y):(x)) -#endif - - - -/* _create_linear_mapping: - * Maps a physical address range into linear memory. - */ -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. - */ -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; - } -} - - - -/* Desc: retrieve CPU MMX capability - * - * In : - - * Out : FALSE if CPU cannot do MMX - * - * Note: - - */ -int _can_mmx (void) -{ -#ifdef USE_MMX_ASM - extern int _mesa_identify_x86_cpu_features (void); - return (_mesa_identify_x86_cpu_features() & 0x00800000); -#else - return 0; -#endif -} +/* + * 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 v1.4 for Mesa + * + * Copyright (C) 2002 - Borca Daniel + * Email : dborca@yahoo.com + * Web : http://www.geocities.com/dborca + */ + + +#include + +#include "internal.h" + + + +#ifndef MAX +#define MAX(x, y) (((x)<(y))?(y):(x)) +#endif + + + +/* _create_linear_mapping: + * Maps a physical address range into linear memory. + */ +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. + */ +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; + } +} + + + +/* Desc: retrieve CPU MMX capability + * + * In : - + * Out : FALSE if CPU cannot do MMX + * + * Note: - + */ +int _can_mmx (void) +{ +#ifdef USE_MMX_ASM + extern int _mesa_x86_cpu_features; + return (_mesa_x86_cpu_features & 0x00800000); +#else + return 0; +#endif +} -- cgit v1.2.3