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freebsd-skq/sys/dev/dpms/dpms.c

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Copy the following files to new places, a subsequent commit would remove them from the old place. This commit necessary so that the tree would not enter a broken state. sys/i386/isa/vesa.c -> dev/fb/vesa.c sys/i386/include/pc/vesa.h -> dev/fb/vesa.h sys/i386/isa/dpms.c -> dev/dpms/dpms.c
2009-09-09 07:45:08 +00:00
/*-
* Copyright (c) 2008 Yahoo!, Inc.
* All rights reserved.
* Written by: John Baldwin <jhb@FreeBSD.org>
*
* 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.
* 3. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* 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.
*/
/*
* Copyright (c) 2004 Benjamin Close <Benjamin.Close@clearchain.com>
* 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.
*/
/*
* Support for managing the display via DPMS for suspend/resume.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/libkern.h>
#include <sys/module.h>
Move sys/dev/x86bios to sys/compat/x86bios. It may not be optimal but it is clearly better than the old place. OK'ed by: delphij, paradox (ddkprog yahoo com)
2009-09-23 20:49:14 +00:00
#include <compat/x86bios/x86bios.h>
Copy the following files to new places, a subsequent commit would remove them from the old place. This commit necessary so that the tree would not enter a broken state. sys/i386/isa/vesa.c -> dev/fb/vesa.c sys/i386/include/pc/vesa.h -> dev/fb/vesa.h sys/i386/isa/dpms.c -> dev/dpms/dpms.c
2009-09-09 07:45:08 +00:00
/*
* VESA DPMS States
*/
#define DPMS_ON 0x00
#define DPMS_STANDBY 0x01
#define DPMS_SUSPEND 0x02
#define DPMS_OFF 0x04
#define DPMS_REDUCEDON 0x08
#define VBE_DPMS_FUNCTION 0x4F10
#define VBE_DPMS_GET_SUPPORTED_STATES 0x00
#define VBE_DPMS_GET_STATE 0x02
#define VBE_DPMS_SET_STATE 0x01
#define VBE_MAJORVERSION_MASK 0x0F
#define VBE_MINORVERSION_MASK 0xF0
struct dpms_softc {
int dpms_supported_states;
int dpms_initial_state;
};
static int dpms_attach(device_t);
static int dpms_detach(device_t);
static int dpms_get_supported_states(int *);
static int dpms_get_current_state(int *);
static void dpms_identify(driver_t *, device_t);
static int dpms_probe(device_t);
static int dpms_resume(device_t);
static int dpms_set_state(int);
static int dpms_suspend(device_t);
static device_method_t dpms_methods[] = {
DEVMETHOD(device_identify, dpms_identify),
DEVMETHOD(device_probe, dpms_probe),
DEVMETHOD(device_attach, dpms_attach),
DEVMETHOD(device_detach, dpms_detach),
DEVMETHOD(device_suspend, dpms_suspend),
DEVMETHOD(device_resume, dpms_resume),
{ 0, 0 }
};
static driver_t dpms_driver = {
"dpms",
dpms_methods,
sizeof(struct dpms_softc),
};
static devclass_t dpms_devclass;
DRIVER_MODULE(dpms, vgapci, dpms_driver, dpms_devclass, NULL, NULL);
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_DEPEND(dpms, x86bios, 1, 1, 1);
Copy the following files to new places, a subsequent commit would remove them from the old place. This commit necessary so that the tree would not enter a broken state. sys/i386/isa/vesa.c -> dev/fb/vesa.c sys/i386/include/pc/vesa.h -> dev/fb/vesa.h sys/i386/isa/dpms.c -> dev/dpms/dpms.c
2009-09-09 07:45:08 +00:00
static void
dpms_identify(driver_t *driver, device_t parent)
{
- Remove a redundant check for dpms(4). - Test a cheaper function first.
2009-11-12 18:16:35 +00:00
if (device_get_flags(parent) != 0 &&
x86bios_match_device(0xc0000, parent))
Copy the following files to new places, a subsequent commit would remove them from the old place. This commit necessary so that the tree would not enter a broken state. sys/i386/isa/vesa.c -> dev/fb/vesa.c sys/i386/include/pc/vesa.h -> dev/fb/vesa.h sys/i386/isa/dpms.c -> dev/dpms/dpms.c
2009-09-09 07:45:08 +00:00
device_add_child(parent, "dpms", 0);
}
static int
dpms_probe(device_t dev)
{
int error, states;
error = dpms_get_supported_states(&states);
if (error)
return (error);
device_set_desc(dev, "DPMS suspend/resume");
device_quiet(dev);
return (BUS_PROBE_DEFAULT);
}
static int
dpms_attach(device_t dev)
{
struct dpms_softc *sc;
int error;
sc = device_get_softc(dev);
error = dpms_get_supported_states(&sc->dpms_supported_states);
if (error)
return (error);
error = dpms_get_current_state(&sc->dpms_initial_state);
return (error);
}
static int
dpms_detach(device_t dev)
{
return (0);
}
static int
dpms_suspend(device_t dev)
{
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
struct dpms_softc *sc;
Copy the following files to new places, a subsequent commit would remove them from the old place. This commit necessary so that the tree would not enter a broken state. sys/i386/isa/vesa.c -> dev/fb/vesa.c sys/i386/include/pc/vesa.h -> dev/fb/vesa.h sys/i386/isa/dpms.c -> dev/dpms/dpms.c
2009-09-09 07:45:08 +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
sc = device_get_softc(dev);
if ((sc->dpms_supported_states & DPMS_OFF) != 0)
dpms_set_state(DPMS_OFF);
Copy the following files to new places, a subsequent commit would remove them from the old place. This commit necessary so that the tree would not enter a broken state. sys/i386/isa/vesa.c -> dev/fb/vesa.c sys/i386/include/pc/vesa.h -> dev/fb/vesa.h sys/i386/isa/dpms.c -> dev/dpms/dpms.c
2009-09-09 07:45:08 +00:00
return (0);
}
static int
dpms_resume(device_t dev)
{
struct dpms_softc *sc;
sc = device_get_softc(dev);
dpms_set_state(sc->dpms_initial_state);
return (0);
}
static int
dpms_call_bios(int subfunction, int *bh)
{
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
x86regs_t regs;
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_get_intr(0x10) == 0)
return (ENXIO);
x86bios_init_regs(&regs);
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
regs.R_AX = VBE_DPMS_FUNCTION;
regs.R_BL = subfunction;
regs.R_BH = *bh;
- 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(&regs, 0x10);
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 (regs.R_AX != 0x004f)
- Teach vesa(4) and dpms(4) about x86emu. [1] - Add vesa kernel options for amd64. - Connect libvgl library and splash kernel modules to amd64 build. - Connect manual page dpms(4) to amd64 build. - Remove old vesa/dpms files. Submitted by: paradox <ddkprog yahoo com> [1], swell k at gmail.com (with some minor tweaks)
2009-09-09 09:50:31 +00:00
return (ENXIO);
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
*bh = regs.R_BH;
- Teach vesa(4) and dpms(4) about x86emu. [1] - Add vesa kernel options for amd64. - Connect libvgl library and splash kernel modules to amd64 build. - Connect manual page dpms(4) to amd64 build. - Remove old vesa/dpms files. Submitted by: paradox <ddkprog yahoo com> [1], swell k at gmail.com (with some minor tweaks)
2009-09-09 09:50:31 +00:00
return (0);
Copy the following files to new places, a subsequent commit would remove them from the old place. This commit necessary so that the tree would not enter a broken state. sys/i386/isa/vesa.c -> dev/fb/vesa.c sys/i386/include/pc/vesa.h -> dev/fb/vesa.h sys/i386/isa/dpms.c -> dev/dpms/dpms.c
2009-09-09 07:45:08 +00:00
}
static int
dpms_get_supported_states(int *states)
{
*states = 0;
return (dpms_call_bios(VBE_DPMS_GET_SUPPORTED_STATES, states));
}
static int
dpms_get_current_state(int *state)
{
*state = 0;
return (dpms_call_bios(VBE_DPMS_GET_STATE, state));
}
static int
dpms_set_state(int state)
{
return (dpms_call_bios(VBE_DPMS_SET_STATE, &state));
}
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