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freebsd-dev/sys/compat/x86bios/x86bios.c

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Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
/*-
Use a 2 clause BSD-style license instead of stating the code as public domain, as requested by core@ and reviewed by the author.
2009-09-28 08:14:15 +00:00
* Copyright (c) 2009 Alex Keda <admin@lissyara.su>
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
* Copyright (c) 2009-2010 Jung-uk Kim <jkim@FreeBSD.org>
Use a 2 clause BSD-style license instead of stating the code as public domain, as requested by core@ and reviewed by the author.
2009-09-28 08:14:15 +00:00
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include "opt_x86bios.h"
#include <sys/param.h>
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
#include <sys/bus.h>
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
#include <sys/kernel.h>
#include <sys/lock.h>
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
#include <sys/malloc.h>
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
#include <sys/module.h>
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
#include <sys/mutex.h>
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
#include <sys/proc.h>
Add two new debugging tunables for x86bios instead of abusing bootverbose, i.e., debug.x86bios.call and debug.x86bios.int.
2009-12-15 22:44:28 +00:00
#include <sys/sysctl.h>
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
#include <contrib/x86emu/x86emu.h>
#include <contrib/x86emu/x86emu_regs.h>
#include <compat/x86bios/x86bios.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include <machine/cpufunc.h>
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
#include <vm/vm.h>
#include <vm/pmap.h>
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
#define X86BIOS_PAGE_SIZE 0x00001000 /* 4K */
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
#define X86BIOS_IVT_SIZE 0x00000500 /* 1K + 256 (BDA) */
#define X86BIOS_SEG_SIZE 0x00010000 /* 64K */
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#define X86BIOS_MEM_SIZE (0x00100000 + X86BIOS_SEG_SIZE)
/* 1M + 64K (high memory) */
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
#define X86BIOS_IVT_BASE 0x00000000
#define X86BIOS_RAM_BASE 0x00001000
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#define X86BIOS_ROM_BASE 0x000a0000
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#define X86BIOS_ROM_SIZE (X86BIOS_MEM_SIZE - (uint32_t)x86bios_rom_phys)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
#define X86BIOS_PAGES (X86BIOS_MEM_SIZE / X86BIOS_PAGE_SIZE)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
#define X86BIOS_R_DS _pad1
#define X86BIOS_R_SS _pad2
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#define X86BIOS_R_SP _pad3.I16_reg.x_reg
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
static struct x86emu x86bios_emu;
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
static struct mtx x86bios_lock;
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
static void *x86bios_ivt;
static void *x86bios_rom;
static void *x86bios_seg;
static vm_offset_t *x86bios_map;
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
static vm_paddr_t x86bios_rom_phys;
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
static vm_paddr_t x86bios_seg_phys;
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
static int x86bios_fault;
static uint32_t x86bios_fault_addr;
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
static uint16_t x86bios_fault_cs;
static uint16_t x86bios_fault_ip;
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
Add two new debugging tunables for x86bios instead of abusing bootverbose, i.e., debug.x86bios.call and debug.x86bios.int.
2009-12-15 22:44:28 +00:00
SYSCTL_NODE(_debug, OID_AUTO, x86bios, CTLFLAG_RD, NULL, "x86bios debugging");
static int x86bios_trace_call;
TUNABLE_INT("debug.x86bios.call", &x86bios_trace_call);
SYSCTL_INT(_debug_x86bios, OID_AUTO, call, CTLFLAG_RW, &x86bios_trace_call, 0,
"Trace far function calls");
static int x86bios_trace_int;
TUNABLE_INT("debug.x86bios.int", &x86bios_trace_int);
SYSCTL_INT(_debug_x86bios, OID_AUTO, int, CTLFLAG_RW, &x86bios_trace_int, 0,
"Trace software interrupt handlers");
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
static void
x86bios_set_fault(struct x86emu *emu, uint32_t addr)
{
x86bios_fault = 1;
x86bios_fault_addr = addr;
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
x86bios_fault_cs = emu->x86.R_CS;
x86bios_fault_ip = emu->x86.R_IP;
x86emu_halt_sys(emu);
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
}
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
static void *
x86bios_get_pages(uint32_t offset, size_t size)
{
int i;
if (offset + size > X86BIOS_MEM_SIZE)
return (NULL);
i = offset / X86BIOS_PAGE_SIZE;
if (x86bios_map[i] != 0)
return ((void *)(x86bios_map[i] + offset -
i * X86BIOS_PAGE_SIZE));
return (NULL);
}
static void
x86bios_set_pages(vm_offset_t va, vm_paddr_t pa, size_t size)
{
int i, j;
for (i = pa / X86BIOS_PAGE_SIZE, j = 0;
j < howmany(size, X86BIOS_PAGE_SIZE); i++, j++)
x86bios_map[i] = va + j * X86BIOS_PAGE_SIZE;
}
static uint8_t
x86bios_emu_rdb(struct x86emu *emu, uint32_t addr)
{
uint8_t *va;
va = x86bios_get_pages(addr, sizeof(*va));
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
if (va == NULL)
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
x86bios_set_fault(emu, addr);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
return (*va);
}
static uint16_t
x86bios_emu_rdw(struct x86emu *emu, uint32_t addr)
{
uint16_t *va;
va = x86bios_get_pages(addr, sizeof(*va));
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
if (va == NULL)
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
x86bios_set_fault(emu, addr);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#ifndef __NO_STRICT_ALIGNMENT
if ((addr & 1) != 0)
return (le16dec(va));
else
#endif
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
return (le16toh(*va));
}
static uint32_t
x86bios_emu_rdl(struct x86emu *emu, uint32_t addr)
{
uint32_t *va;
va = x86bios_get_pages(addr, sizeof(*va));
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
if (va == NULL)
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
x86bios_set_fault(emu, addr);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#ifndef __NO_STRICT_ALIGNMENT
if ((addr & 3) != 0)
return (le32dec(va));
else
#endif
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
return (le32toh(*va));
}
static void
x86bios_emu_wrb(struct x86emu *emu, uint32_t addr, uint8_t val)
{
uint8_t *va;
va = x86bios_get_pages(addr, sizeof(*va));
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
if (va == NULL)
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
x86bios_set_fault(emu, addr);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
*va = val;
}
static void
x86bios_emu_wrw(struct x86emu *emu, uint32_t addr, uint16_t val)
{
uint16_t *va;
va = x86bios_get_pages(addr, sizeof(*va));
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
if (va == NULL)
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
x86bios_set_fault(emu, addr);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#ifndef __NO_STRICT_ALIGNMENT
if ((addr & 1) != 0)
le16enc(va, val);
else
#endif
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
*va = htole16(val);
}
static void
x86bios_emu_wrl(struct x86emu *emu, uint32_t addr, uint32_t val)
{
uint32_t *va;
va = x86bios_get_pages(addr, sizeof(*va));
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
if (va == NULL)
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
x86bios_set_fault(emu, addr);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#ifndef __NO_STRICT_ALIGNMENT
if ((addr & 3) != 0)
le32enc(va, val);
else
#endif
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
*va = htole32(val);
}
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
static uint8_t
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
x86bios_emu_inb(struct x86emu *emu, uint16_t port)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
{
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
if (port == 0xb2) /* APM scratch register */
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
return (0);
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
if (port >= 0x80 && port < 0x88) /* POST status register */
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
return (0);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
return (inb(port));
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
}
static uint16_t
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
x86bios_emu_inw(struct x86emu *emu, uint16_t port)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
{
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
if (port >= 0x80 && port < 0x88) /* POST status register */
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
return (0);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
return (inw(port));
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
}
static uint32_t
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
x86bios_emu_inl(struct x86emu *emu, uint16_t port)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
{
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
if (port >= 0x80 && port < 0x88) /* POST status register */
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
return (0);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
return (inl(port));
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
}
static void
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
x86bios_emu_outb(struct x86emu *emu, uint16_t port, uint8_t val)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
{
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
if (port == 0xb2) /* APM scratch register */
return;
if (port >= 0x80 && port < 0x88) /* POST status register */
return;
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
outb(port, val);
}
static void
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
x86bios_emu_outw(struct x86emu *emu, uint16_t port, uint16_t val)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
{
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
if (port >= 0x80 && port < 0x88) /* POST status register */
return;
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
outw(port, val);
}
static void
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
x86bios_emu_outl(struct x86emu *emu, uint16_t port, uint32_t val)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
{
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
if (port >= 0x80 && port < 0x88) /* POST status register */
return;
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
outl(port, val);
}
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
static void
x86bios_emu_get_intr(struct x86emu *emu, int intno)
{
uint16_t *sp;
uint32_t iv;
emu->x86.R_SP -= 6;
sp = (uint16_t *)((vm_offset_t)x86bios_seg + emu->x86.R_SP);
sp[0] = htole16(emu->x86.R_IP);
sp[1] = htole16(emu->x86.R_CS);
sp[2] = htole16(emu->x86.R_FLG);
iv = x86bios_get_intr(intno);
emu->x86.R_IP = iv & 0x000f;
emu->x86.R_CS = (iv >> 12) & 0xffff;
emu->x86.R_FLG &= ~(F_IF | F_TF);
}
void *
x86bios_alloc(uint32_t *offset, size_t size)
{
void *vaddr;
if (offset == NULL || size == 0)
return (NULL);
vaddr = contigmalloc(size, M_DEVBUF, M_NOWAIT, X86BIOS_RAM_BASE,
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
x86bios_rom_phys, X86BIOS_PAGE_SIZE, 0);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
if (vaddr != NULL) {
*offset = vtophys(vaddr);
x86bios_set_pages((vm_offset_t)vaddr, *offset, size);
}
return (vaddr);
}
void
x86bios_free(void *addr, size_t size)
{
vm_paddr_t paddr;
if (addr == NULL || size == 0)
return;
paddr = vtophys(addr);
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
if (paddr < X86BIOS_RAM_BASE || paddr >= x86bios_rom_phys ||
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
paddr % X86BIOS_PAGE_SIZE != 0)
return;
bzero(x86bios_map + paddr / X86BIOS_PAGE_SIZE,
sizeof(*x86bios_map) * howmany(size, X86BIOS_PAGE_SIZE));
contigfree(addr, size, M_DEVBUF);
}
void
x86bios_init_regs(struct x86regs *regs)
{
bzero(regs, sizeof(*regs));
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
regs->X86BIOS_R_DS = 0x40;
regs->X86BIOS_R_SS = x86bios_seg_phys >> 4;
regs->X86BIOS_R_SP = 0xfffe;
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
}
void
x86bios_call(struct x86regs *regs, uint16_t seg, uint16_t off)
{
if (x86bios_map == NULL)
return;
Add two new debugging tunables for x86bios instead of abusing bootverbose, i.e., debug.x86bios.call and debug.x86bios.int.
2009-12-15 22:44:28 +00:00
if (x86bios_trace_call)
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
printf("Calling 0x%05x (ax=0x%04x bx=0x%04x "
"cx=0x%04x dx=0x%04x es=0x%04x di=0x%04x)\n",
(seg << 4) + off, regs->R_AX, regs->R_BX, regs->R_CX,
regs->R_DX, regs->R_ES, regs->R_DI);
mtx_lock_spin(&x86bios_lock);
memcpy(&x86bios_emu.x86, regs, sizeof(*regs));
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
x86bios_fault = 0;
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
x86emu_exec_call(&x86bios_emu, seg, off);
memcpy(regs, &x86bios_emu.x86, sizeof(*regs));
mtx_unlock_spin(&x86bios_lock);
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
if (x86bios_trace_call) {
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
printf("Exiting 0x%05x (ax=0x%04x bx=0x%04x "
"cx=0x%04x dx=0x%04x es=0x%04x di=0x%04x)\n",
(seg << 4) + off, regs->R_AX, regs->R_BX, regs->R_CX,
regs->R_DX, regs->R_ES, regs->R_DI);
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
if (x86bios_fault)
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
printf("Page fault at 0x%05x from 0x%04x:0x%04x.\n",
x86bios_fault_addr, x86bios_fault_cs,
x86bios_fault_ip);
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
}
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
}
uint32_t
x86bios_get_intr(int intno)
{
uint32_t *iv;
iv = (uint32_t *)((vm_offset_t)x86bios_ivt + intno * 4);
return (le32toh(*iv));
}
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
void
- Use FreeBSD function naming convention. - Change x86biosCall() to more appropriate x86bios_intr().[1] Discussed with: delphij, paradox (ddkprog yahoo com) Submitted by: paradox (ddkprog yahoo com)[1]
2009-09-24 19:24:42 +00:00
x86bios_intr(struct x86regs *regs, int intno)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
{
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
if (intno < 0 || intno > 255)
return;
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
if (x86bios_map == NULL)
return;
Add two new debugging tunables for x86bios instead of abusing bootverbose, i.e., debug.x86bios.call and debug.x86bios.int.
2009-12-15 22:44:28 +00:00
if (x86bios_trace_int)
- Reduce BIOS memory mapping. We want 1MB of physical memory, not 12MB[1]. - Remove CS and IP registers from x86bios.h. They have no use for us. - Adjust register dump to make it little bit more useful for debugging. Submitted by: paradox (ddkprog yahoo com)[1] (initial version)
2009-09-25 17:56:32 +00:00
printf("Calling int 0x%x (ax=0x%04x bx=0x%04x "
"cx=0x%04x dx=0x%04x es=0x%04x di=0x%04x)\n",
intno, regs->R_AX, regs->R_BX, regs->R_CX,
regs->R_DX, regs->R_ES, regs->R_DI);
Dump real mode registers under bootverbose to help debugging BIOS emulator.
2009-09-24 22:42:35 +00:00
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
mtx_lock_spin(&x86bios_lock);
memcpy(&x86bios_emu.x86, regs, sizeof(*regs));
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
x86bios_fault = 0;
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
x86emu_exec_intr(&x86bios_emu, intno);
memcpy(regs, &x86bios_emu.x86, sizeof(*regs));
mtx_unlock_spin(&x86bios_lock);
Dump real mode registers under bootverbose to help debugging BIOS emulator.
2009-09-24 22:42:35 +00:00
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
if (x86bios_trace_int) {
- Reduce BIOS memory mapping. We want 1MB of physical memory, not 12MB[1]. - Remove CS and IP registers from x86bios.h. They have no use for us. - Adjust register dump to make it little bit more useful for debugging. Submitted by: paradox (ddkprog yahoo com)[1] (initial version)
2009-09-25 17:56:32 +00:00
printf("Exiting int 0x%x (ax=0x%04x bx=0x%04x "
"cx=0x%04x dx=0x%04x es=0x%04x di=0x%04x)\n",
intno, regs->R_AX, regs->R_BX, regs->R_CX,
regs->R_DX, regs->R_ES, regs->R_DI);
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
if (x86bios_fault)
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
printf("Page fault at 0x%05x from 0x%04x:0x%04x.\n",
x86bios_fault_addr, x86bios_fault_cs,
x86bios_fault_ip);
Detect illegal access to unmapped memory within real mode emulator to aid debugging. Update copyright date while I am here.
2010-03-18 20:15:34 +00:00
}
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
}
void *
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
x86bios_offset(uint32_t offset)
{
return (x86bios_get_pages(offset, 1));
}
void *
x86bios_get_orm(uint32_t offset)
{
uint8_t *p;
/* Does the shadow ROM contain BIOS POST code for x86? */
p = x86bios_offset(offset);
if (p == NULL || p[0] != 0x55 || p[1] != 0xaa || p[3] != 0xe9)
return (NULL);
return (p);
}
int
x86bios_match_device(uint32_t offset, device_t dev)
{
uint8_t *p;
uint16_t device, vendor;
uint8_t class, progif, subclass;
/* Does the shadow ROM contain BIOS POST code for x86? */
p = x86bios_get_orm(offset);
if (p == NULL)
return (0);
/* Does it contain PCI data structure? */
p += le16toh(*(uint16_t *)(p + 0x18));
if (bcmp(p, "PCIR", 4) != 0 ||
le16toh(*(uint16_t *)(p + 0x0a)) < 0x18 || *(p + 0x14) != 0)
return (0);
/* Does it match the vendor, device, and classcode? */
vendor = le16toh(*(uint16_t *)(p + 0x04));
device = le16toh(*(uint16_t *)(p + 0x06));
progif = *(p + 0x0d);
subclass = *(p + 0x0e);
class = *(p + 0x0f);
if (vendor != pci_get_vendor(dev) || device != pci_get_device(dev) ||
class != pci_get_class(dev) || subclass != pci_get_subclass(dev) ||
progif != pci_get_progif(dev))
return (0);
return (1);
}
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#if defined(__amd64__) || (defined(__i386__) && !defined(PC98))
#define PROBE_EBDA 1
#else
#define PROBE_EBDA 0
#endif
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
static __inline int
x86bios_map_mem(void)
{
Fix a copy-and-pasto in the previous commit.
2009-10-19 21:01:42 +00:00
x86bios_ivt = pmap_mapbios(X86BIOS_IVT_BASE, X86BIOS_IVT_SIZE);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
if (x86bios_ivt == NULL)
return (1);
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#if PROBE_EBDA
/* Probe EBDA via BDA. */
x86bios_rom_phys = *(uint16_t *)((vm_offset_t)x86bios_ivt + 0x40e);
x86bios_rom_phys = le16toh(x86bios_rom_phys) << 4;
if (x86bios_rom_phys != 0 && x86bios_rom_phys < X86BIOS_ROM_BASE &&
X86BIOS_ROM_BASE - x86bios_rom_phys <= 128 * 1024)
x86bios_rom_phys =
rounddown(x86bios_rom_phys, X86BIOS_PAGE_SIZE);
else
#endif
x86bios_rom_phys = X86BIOS_ROM_BASE;
x86bios_rom = pmap_mapdev(x86bios_rom_phys, X86BIOS_ROM_SIZE);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
if (x86bios_rom == NULL) {
pmap_unmapdev((vm_offset_t)x86bios_ivt, X86BIOS_IVT_SIZE);
return (1);
}
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#if PROBE_EBDA
/* Change attribute for EBDA. */
if (x86bios_rom_phys < X86BIOS_ROM_BASE &&
pmap_change_attr((vm_offset_t)x86bios_rom,
X86BIOS_ROM_BASE - x86bios_rom_phys, PAT_WRITE_BACK) != 0) {
pmap_unmapdev((vm_offset_t)x86bios_ivt, X86BIOS_IVT_SIZE);
pmap_unmapdev((vm_offset_t)x86bios_rom, X86BIOS_ROM_SIZE);
return (1);
}
#endif
/* Change attribute for high memory. */
if (pmap_change_attr((vm_offset_t)x86bios_rom + X86BIOS_ROM_SIZE -
X86BIOS_SEG_SIZE, X86BIOS_SEG_SIZE, PAT_WRITE_BACK) != 0) {
pmap_unmapdev((vm_offset_t)x86bios_ivt, X86BIOS_IVT_SIZE);
pmap_unmapdev((vm_offset_t)x86bios_rom, X86BIOS_ROM_SIZE);
return (1);
}
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
x86bios_seg = contigmalloc(X86BIOS_SEG_SIZE, M_DEVBUF, M_WAITOK,
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
X86BIOS_RAM_BASE, x86bios_rom_phys, X86BIOS_PAGE_SIZE, 0);
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
x86bios_seg_phys = vtophys(x86bios_seg);
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
if (bootverbose) {
printf("x86bios: IVT 0x%06x-0x%06x at %p\n",
X86BIOS_IVT_BASE, X86BIOS_IVT_SIZE + X86BIOS_IVT_BASE - 1,
x86bios_ivt);
printf("x86bios: SSEG 0x%06x-0x%06x at %p\n",
(uint32_t)x86bios_seg_phys,
X86BIOS_SEG_SIZE + (uint32_t)x86bios_seg_phys - 1,
x86bios_seg);
#if PROBE_EBDA
if (x86bios_rom_phys < X86BIOS_ROM_BASE)
printf("x86bios: EBDA 0x%06x-0x%06x at %p\n",
(uint32_t)x86bios_rom_phys, X86BIOS_ROM_BASE - 1,
x86bios_rom);
#endif
printf("x86bios: ROM 0x%06x-0x%06x at %p\n",
X86BIOS_ROM_BASE, X86BIOS_MEM_SIZE - X86BIOS_SEG_SIZE - 1,
(void *)((vm_offset_t)x86bios_rom + X86BIOS_ROM_BASE -
Fix i386 PAE kernel build. Reported by: tinderbox
2010-03-22 17:30:34 +00:00
(vm_offset_t)x86bios_rom_phys));
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
printf("x86bios: HIMEM 0x%06x-0x%06x at %p\n",
X86BIOS_MEM_SIZE - X86BIOS_SEG_SIZE, X86BIOS_MEM_SIZE - 1,
(void *)((vm_offset_t)x86bios_rom + X86BIOS_ROM_SIZE -
X86BIOS_SEG_SIZE));
}
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
return (0);
}
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
#undef PROBE_EBDA
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
static __inline void
x86bios_unmap_mem(void)
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
{
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
pmap_unmapdev((vm_offset_t)x86bios_ivt, X86BIOS_IVT_SIZE);
pmap_unmapdev((vm_offset_t)x86bios_rom, X86BIOS_ROM_SIZE);
contigfree(x86bios_seg, X86BIOS_SEG_SIZE, M_DEVBUF);
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
}
static void
x86bios_init(void *arg __unused)
{
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
int i;
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
mtx_init(&x86bios_lock, "x86bios lock", NULL, MTX_SPIN);
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
if (x86bios_map_mem() != 0)
return;
x86bios_map = malloc(sizeof(*x86bios_map) * X86BIOS_PAGES, M_DEVBUF,
M_WAITOK | M_ZERO);
x86bios_set_pages((vm_offset_t)x86bios_ivt, X86BIOS_IVT_BASE,
X86BIOS_IVT_SIZE);
- Map EBDA if available and add 64KB above 1MB (high memory), just in case. - Print the initial memory map when bootverbose is set. - Change the page fault address format from linear to %cs:%ip style. - Move duplicate code into a newly added function. - Add strictly aligned memory access for distant future. ;-)
2010-03-19 21:15:43 +00:00
x86bios_set_pages((vm_offset_t)x86bios_rom, x86bios_rom_phys,
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
X86BIOS_ROM_SIZE);
x86bios_set_pages((vm_offset_t)x86bios_seg, x86bios_seg_phys,
X86BIOS_SEG_SIZE);
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
bzero(&x86bios_emu, sizeof(x86bios_emu));
x86bios_emu.emu_rdb = x86bios_emu_rdb;
x86bios_emu.emu_rdw = x86bios_emu_rdw;
x86bios_emu.emu_rdl = x86bios_emu_rdl;
x86bios_emu.emu_wrb = x86bios_emu_wrb;
x86bios_emu.emu_wrw = x86bios_emu_wrw;
x86bios_emu.emu_wrl = x86bios_emu_wrl;
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
x86bios_emu.emu_inb = x86bios_emu_inb;
x86bios_emu.emu_inw = x86bios_emu_inw;
x86bios_emu.emu_inl = x86bios_emu_inl;
x86bios_emu.emu_outb = x86bios_emu_outb;
x86bios_emu.emu_outw = x86bios_emu_outw;
x86bios_emu.emu_outl = x86bios_emu_outl;
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
for (i = 0; i < 256; i++)
x86bios_emu._x86emu_intrTab[i] = x86bios_emu_get_intr;
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
}
static void
x86bios_uninit(void *arg __unused)
{
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
vm_offset_t *map = x86bios_map;
- Use spin lock instead of default mutex for safety. INT/IRET instructions save/clear/restore flags but emulated flags have no effect on the host. I believe BIOS writers never meant to run their code in emulated environment with interrupt enabled. :-) - Use memcpy(3) instead of copying individual members. I believe struct x86regs was intentionally copied from the first half of struct x86emu_regs for this very purpose. - Fix some style nits and consistencies. Reviewed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:13:36 +00:00
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
mtx_lock_spin(&x86bios_lock);
if (x86bios_map != NULL) {
free(x86bios_map, M_DEVBUF);
x86bios_map = NULL;
}
mtx_unlock_spin(&x86bios_lock);
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
if (map != NULL)
x86bios_unmap_mem();
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
mtx_destroy(&x86bios_lock);
}
static int
x86bios_modevent(module_t mod __unused, int type, void *data __unused)
{
switch (type) {
case MOD_LOAD:
x86bios_init(NULL);
break;
case MOD_UNLOAD:
x86bios_uninit(NULL);
break;
default:
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
return (ENOTSUP);
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
}
Rewrite x86bios and update its dependent drivers. - Do not map entire real mode memory (1MB). Instead, we map IVT/BDA and ROM area separately. Most notably, ROM area is mapped as device memory (uncacheable) as it should be. User memory is dynamically allocated and free'ed with contigmalloc(9) and contigfree(9). Remove now redundant and potentially dangerous x86bios_alloc.c. If this emulator ever grows to support non-PC hardware, we may implement it with rman(9) later. - Move all host-specific initializations from x86emu_util.c to x86bios.c and remove now unnecessary x86emu_util.c. Currently, non-PC hardware is not supported. We may use bus_space(9) later when the KPI is fixed. - Replace all bzero() calls for emulated registers with more obviously named x86bios_init_regs(). This function also initializes DS and SS properly. - Add x86bios_get_intr(). This function checks if the interrupt vector is available for the platform. It is not necessary for PC-compatible hardware but it may be needed later. ;-) - Do not try turning off monitor if DPMS does not support the state. - Allocate stable memory for VESA OEM strings instead of just holding pointers to them. They may or may not be accessible always. Fix a memory leak of video mode table while I am here. - Add (experimental) BIOS POST call for vesa(4). This function calls VGA BIOS POST code from the current VGA option ROM. Some video controllers cannot save and restore the state properly even if it is claimed to be supported. Usually the symptom is blank display after resuming from suspend state. If the video mode does not match the previous mode after restoring, we try BIOS POST and force the known good initial state. Some magic was taken from NetBSD (and it was taken from vbetool, I believe.) - Add a loader tunable for vgapci(4) to give a hint to dpms(4) and vesa(4) to identify who owns the VESA BIOS. This is very useful for multi-display adapter setup. By default, the POST video controller is automatically probed and the tunable "hw.pci.default_vgapci_unit" is set to corresponding vgapci unit number. You may override it from loader but it is very unlikely to be necessary. Unfortunately only AGP/PCI/PCI-E controllers can be matched because ISA controller does not have necessary device IDs. - Fix a long standing bug in state save/restore function. The state buffer pointer should be ES:BX, not ES:DI according to VBE 3.0. If it ever worked, that's because BX was always zero. :-) - Clean up register initializations more clearer per VBE 3.0. - Fix a lot of style issues with vesa(4).
2009-10-19 20:58:10 +00:00
return (0);
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
}
static moduledata_t x86bios_mod = {
"x86bios",
x86bios_modevent,
NULL,
};
To be safe, make this module initialize earlier by specifying SI_SUB_CPU instead of SI_SUB_KLD. Note that we don't believe that there is any consumers of x86bios that would be triggered in the early stage of boot, so this is more or less just a safebelt. Submitted by: swell.k at gmail.com
2009-09-21 09:09:55 +00:00
DECLARE_MODULE(x86bios, x86bios_mod, SI_SUB_CPU, SI_ORDER_ANY);
Collapase interrupt supporting functions to a new module, and switch from x86emu to this new module. This changeset also brings a fix for bugs introduced with the initial x86emu commit, which prevents the user from using some display mode or cause instant reboots during mode switch. Submitted by: paradox <ddkprog yahoo com>
2009-09-21 08:17:57 +00:00
MODULE_VERSION(x86bios, 1);
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