From 09f98a825a821f7a3f1b162f9ed023f37213a63b Mon Sep 17 00:00:00 2001 From: Tang Liang Date: Fri, 9 Dec 2011 10:05:54 +0800 Subject: x86, acpi, tboot: Have a ACPI os prepare sleep instead of calling tboot_sleep. The ACPI suspend path makes a call to tboot_sleep right before it writes the PM1A, PM1B values. We replace the direct call to tboot via an registration callback similar to __acpi_register_gsi. CC: Len Brown Acked-by: Joseph Cihula Acked-by: Rafael J. Wysocki [v1: Added __attribute__ ((unused))] [v2: Introduced a wrapper instead of changing tboot_sleep return values] [v3: Added return value AE_CTRL_SKIP for acpi_os_sleep_prepare] Signed-off-by: Tang Liang [v1: Fix compile issues on IA64 and PPC64] [v2: Fix where __acpi_os_prepare_sleep==NULL and did not go in sleep properly] Signed-off-by: Konrad Rzeszutek Wilk --- include/acpi/acexcep.h | 1 + include/linux/acpi.h | 10 ++++++++++ include/linux/tboot.h | 1 - 3 files changed, 11 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h index 5b6c391efc8e..fa0d22ce089e 100644 --- a/include/acpi/acexcep.h +++ b/include/acpi/acexcep.h @@ -57,6 +57,7 @@ #define ACPI_SUCCESS(a) (!(a)) #define ACPI_FAILURE(a) (a) +#define ACPI_SKIP(a) (a == AE_CTRL_SKIP) #define AE_OK (acpi_status) 0x0000 /* diff --git a/include/linux/acpi.h b/include/linux/acpi.h index 6001b4da39dd..fccd017b8b6e 100644 --- a/include/linux/acpi.h +++ b/include/linux/acpi.h @@ -359,4 +359,14 @@ static inline int suspend_nvs_register(unsigned long a, unsigned long b) } #endif +#ifdef CONFIG_ACPI +void acpi_os_set_prepare_sleep(int (*func)(u8 sleep_state, + u32 pm1a_ctrl, u32 pm1b_ctrl)); + +acpi_status acpi_os_prepare_sleep(u8 sleep_state, + u32 pm1a_control, u32 pm1b_control); +#else +#define acpi_os_set_prepare_sleep(func, pm1a_ctrl, pm1b_ctrl) do { } while (0) +#endif + #endif /*_LINUX_ACPI_H*/ diff --git a/include/linux/tboot.h b/include/linux/tboot.h index 1dba6ee55203..c75128bed5fa 100644 --- a/include/linux/tboot.h +++ b/include/linux/tboot.h @@ -143,7 +143,6 @@ static inline int tboot_enabled(void) extern void tboot_probe(void); extern void tboot_shutdown(u32 shutdown_type); -extern void tboot_sleep(u8 sleep_state, u32 pm1a_control, u32 pm1b_control); extern struct acpi_table_header *tboot_get_dmar_table( struct acpi_table_header *dmar_tbl); extern int tboot_force_iommu(void); -- cgit v1.2.3 From e1689795a784a7c41ac4cf9032794986b095a133 Mon Sep 17 00:00:00 2001 From: Robert Lee Date: Tue, 20 Mar 2012 15:22:42 -0500 Subject: cpuidle: Add common time keeping and irq enabling Make necessary changes to implement time keeping and irq enabling in the core cpuidle code. This will allow the removal of these functionalities from various platform cpuidle implementations whose timekeeping and irq enabling follows the form in this common code. Signed-off-by: Robert Lee Tested-by: Jean Pihet Tested-by: Amit Daniel Tested-by: Robert Lee Reviewed-by: Kevin Hilman Reviewed-by: Daniel Lezcano Reviewed-by: Deepthi Dharwar Acked-by: Jean Pihet Signed-off-by: Len Brown --- arch/arm/include/asm/cpuidle.h | 29 +++++++++++++++++++ arch/arm/kernel/Makefile | 2 +- arch/arm/kernel/cpuidle.c | 21 ++++++++++++++ drivers/cpuidle/cpuidle.c | 66 +++++++++++++++++++++++++++++++++++++----- include/linux/cpuidle.h | 13 ++++++++- 5 files changed, 122 insertions(+), 9 deletions(-) create mode 100644 arch/arm/include/asm/cpuidle.h create mode 100644 arch/arm/kernel/cpuidle.c (limited to 'include') diff --git a/arch/arm/include/asm/cpuidle.h b/arch/arm/include/asm/cpuidle.h new file mode 100644 index 000000000000..2fca60ab513a --- /dev/null +++ b/arch/arm/include/asm/cpuidle.h @@ -0,0 +1,29 @@ +#ifndef __ASM_ARM_CPUIDLE_H +#define __ASM_ARM_CPUIDLE_H + +#ifdef CONFIG_CPU_IDLE +extern int arm_cpuidle_simple_enter(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index); +#else +static inline int arm_cpuidle_simple_enter(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index) { return -ENODEV; } +#endif + +/* Common ARM WFI state */ +#define ARM_CPUIDLE_WFI_STATE_PWR(p) {\ + .enter = arm_cpuidle_simple_enter,\ + .exit_latency = 1,\ + .target_residency = 1,\ + .power_usage = p,\ + .flags = CPUIDLE_FLAG_TIME_VALID,\ + .name = "WFI",\ + .desc = "ARM WFI",\ +} + +/* + * in case power_specified == 1, give a default WFI power value needed + * by some governors + */ +#define ARM_CPUIDLE_WFI_STATE ARM_CPUIDLE_WFI_STATE_PWR(UINT_MAX) + +#endif diff --git a/arch/arm/kernel/Makefile b/arch/arm/kernel/Makefile index 43b740d0e374..940c27fde498 100644 --- a/arch/arm/kernel/Makefile +++ b/arch/arm/kernel/Makefile @@ -21,7 +21,7 @@ obj-$(CONFIG_DEPRECATED_PARAM_STRUCT) += compat.o obj-$(CONFIG_LEDS) += leds.o obj-$(CONFIG_OC_ETM) += etm.o - +obj-$(CONFIG_CPU_IDLE) += cpuidle.o obj-$(CONFIG_ISA_DMA_API) += dma.o obj-$(CONFIG_ARCH_ACORN) += ecard.o obj-$(CONFIG_FIQ) += fiq.o fiqasm.o diff --git a/arch/arm/kernel/cpuidle.c b/arch/arm/kernel/cpuidle.c new file mode 100644 index 000000000000..89545f6c8403 --- /dev/null +++ b/arch/arm/kernel/cpuidle.c @@ -0,0 +1,21 @@ +/* + * Copyright 2012 Linaro Ltd. + * + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +#include +#include + +int arm_cpuidle_simple_enter(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index) +{ + cpu_do_idle(); + + return index; +} diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index 59f4261c753a..4869b5500234 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -53,6 +53,24 @@ static void cpuidle_kick_cpus(void) {} static int __cpuidle_register_device(struct cpuidle_device *dev); +static inline int cpuidle_enter(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index) +{ + struct cpuidle_state *target_state = &drv->states[index]; + return target_state->enter(dev, drv, index); +} + +static inline int cpuidle_enter_tk(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index) +{ + return cpuidle_wrap_enter(dev, drv, index, cpuidle_enter); +} + +typedef int (*cpuidle_enter_t)(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index); + +static cpuidle_enter_t cpuidle_enter_ops; + /** * cpuidle_idle_call - the main idle loop * @@ -63,7 +81,6 @@ int cpuidle_idle_call(void) { struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices); struct cpuidle_driver *drv = cpuidle_get_driver(); - struct cpuidle_state *target_state; int next_state, entered_state; if (off) @@ -92,12 +109,10 @@ int cpuidle_idle_call(void) return 0; } - target_state = &drv->states[next_state]; - trace_power_start(POWER_CSTATE, next_state, dev->cpu); trace_cpu_idle(next_state, dev->cpu); - entered_state = target_state->enter(dev, drv, next_state); + entered_state = cpuidle_enter_ops(dev, drv, next_state); trace_power_end(dev->cpu); trace_cpu_idle(PWR_EVENT_EXIT, dev->cpu); @@ -110,6 +125,8 @@ int cpuidle_idle_call(void) dev->states_usage[entered_state].time += (unsigned long long)dev->last_residency; dev->states_usage[entered_state].usage++; + } else { + dev->last_residency = 0; } /* give the governor an opportunity to reflect on the outcome */ @@ -164,6 +181,37 @@ void cpuidle_resume_and_unlock(void) EXPORT_SYMBOL_GPL(cpuidle_resume_and_unlock); +/** + * cpuidle_wrap_enter - performs timekeeping and irqen around enter function + * @dev: pointer to a valid cpuidle_device object + * @drv: pointer to a valid cpuidle_driver object + * @index: index of the target cpuidle state. + */ +int cpuidle_wrap_enter(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index, + int (*enter)(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index)) +{ + ktime_t time_start, time_end; + s64 diff; + + time_start = ktime_get(); + + index = enter(dev, drv, index); + + time_end = ktime_get(); + + local_irq_enable(); + + diff = ktime_to_us(ktime_sub(time_end, time_start)); + if (diff > INT_MAX) + diff = INT_MAX; + + dev->last_residency = (int) diff; + + return index; +} + #ifdef CONFIG_ARCH_HAS_CPU_RELAX static int poll_idle(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) @@ -212,10 +260,11 @@ static void poll_idle_init(struct cpuidle_driver *drv) {} int cpuidle_enable_device(struct cpuidle_device *dev) { int ret, i; + struct cpuidle_driver *drv = cpuidle_get_driver(); if (dev->enabled) return 0; - if (!cpuidle_get_driver() || !cpuidle_curr_governor) + if (!drv || !cpuidle_curr_governor) return -EIO; if (!dev->state_count) return -EINVAL; @@ -226,13 +275,16 @@ int cpuidle_enable_device(struct cpuidle_device *dev) return ret; } - poll_idle_init(cpuidle_get_driver()); + cpuidle_enter_ops = drv->en_core_tk_irqen ? + cpuidle_enter_tk : cpuidle_enter; + + poll_idle_init(drv); if ((ret = cpuidle_add_state_sysfs(dev))) return ret; if (cpuidle_curr_governor->enable && - (ret = cpuidle_curr_governor->enable(cpuidle_get_driver(), dev))) + (ret = cpuidle_curr_governor->enable(drv, dev))) goto fail_sysfs; for (i = 0; i < dev->state_count; i++) { diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 712abcc205ae..927db28a2a4c 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -15,6 +15,7 @@ #include #include #include +#include #define CPUIDLE_STATE_MAX 8 #define CPUIDLE_NAME_LEN 16 @@ -122,6 +123,8 @@ struct cpuidle_driver { struct module *owner; unsigned int power_specified:1; + /* set to 1 to use the core cpuidle time keeping (for all states). */ + unsigned int en_core_tk_irqen:1; struct cpuidle_state states[CPUIDLE_STATE_MAX]; int state_count; int safe_state_index; @@ -140,7 +143,10 @@ extern void cpuidle_pause_and_lock(void); extern void cpuidle_resume_and_unlock(void); extern int cpuidle_enable_device(struct cpuidle_device *dev); extern void cpuidle_disable_device(struct cpuidle_device *dev); - +extern int cpuidle_wrap_enter(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index, + int (*enter)(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index)); #else static inline void disable_cpuidle(void) { } static inline int cpuidle_idle_call(void) { return -ENODEV; } @@ -157,6 +163,11 @@ static inline void cpuidle_resume_and_unlock(void) { } static inline int cpuidle_enable_device(struct cpuidle_device *dev) {return -ENODEV; } static inline void cpuidle_disable_device(struct cpuidle_device *dev) { } +static inline int cpuidle_wrap_enter(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index, + int (*enter)(struct cpuidle_device *dev, + struct cpuidle_driver *drv, int index)) +{ return -ENODEV; } #endif -- cgit v1.2.3 From 6a92c36688bd6d8e68e19ca9b5e41e8197921b59 Mon Sep 17 00:00:00 2001 From: Vincenzo Frascino Date: Wed, 21 Mar 2012 12:55:03 -0700 Subject: thermal: add support for thermal sensor present on SPEAr13xx machines ST's SPEAr13xx machines are based on CortexA9 ARM processors. These machines contain a thermal sensor for junction temperature monitoring. This patch adds support for this thermal sensor in existing thermal framework. [akpm@linux-foundation.org: little code cleanup] [akpm@linux-foundation.org: print the pointer correctly] [viresh.kumar@st.com: thermal/spear_thermal: add compilation dependency on PLAT_SPEAR] Signed-off-by: Vincenzo Frascino Signed-off-by: Viresh Kumar Signed-off-by: Viresh Kumar Signed-off-by: Andrew Morton Signed-off-by: Len Brown --- drivers/thermal/Kconfig | 8 ++ drivers/thermal/Makefile | 1 + drivers/thermal/spear_thermal.c | 206 ++++++++++++++++++++++++++++ include/linux/platform_data/spear_thermal.h | 26 ++++ 4 files changed, 241 insertions(+) create mode 100644 drivers/thermal/spear_thermal.c create mode 100644 include/linux/platform_data/spear_thermal.h (limited to 'include') diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index f7f71b2d3101..514a691abea0 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -18,3 +18,11 @@ config THERMAL_HWMON depends on THERMAL depends on HWMON=y || HWMON=THERMAL default y + +config SPEAR_THERMAL + bool "SPEAr thermal sensor driver" + depends on THERMAL + depends on PLAT_SPEAR + help + Enable this to plug the SPEAr thermal sensor driver into the Linux + thermal framework diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 31108a01c22e..a9fff0bf4b14 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -3,3 +3,4 @@ # obj-$(CONFIG_THERMAL) += thermal_sys.o +obj-$(CONFIG_SPEAR_THERMAL) += spear_thermal.o \ No newline at end of file diff --git a/drivers/thermal/spear_thermal.c b/drivers/thermal/spear_thermal.c new file mode 100644 index 000000000000..880bf289aa64 --- /dev/null +++ b/drivers/thermal/spear_thermal.c @@ -0,0 +1,206 @@ +/* + * SPEAr thermal driver. + * + * Copyright (C) 2011-2012 ST Microelectronics + * Author: Vincenzo Frascino + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#define MD_FACTOR 1000 + +/* SPEAr Thermal Sensor Dev Structure */ +struct spear_thermal_dev { + /* pointer to base address of the thermal sensor */ + void __iomem *thermal_base; + /* clk structure */ + struct clk *clk; + /* pointer to thermal flags */ + unsigned int flags; +}; + +static inline int thermal_get_temp(struct thermal_zone_device *thermal, + unsigned long *temp) +{ + struct spear_thermal_dev *stdev = thermal->devdata; + + /* + * Data are ready to be read after 628 usec from POWERDOWN signal + * (PDN) = 1 + */ + *temp = (readl(stdev->thermal_base) & 0x7F) * MD_FACTOR; + return 0; +} + +static struct thermal_zone_device_ops ops = { + .get_temp = thermal_get_temp, +}; + +#ifdef CONFIG_PM +static int spear_thermal_suspend(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct thermal_zone_device *spear_thermal = platform_get_drvdata(pdev); + struct spear_thermal_dev *stdev = spear_thermal->devdata; + unsigned int actual_mask = 0; + + /* Disable SPEAr Thermal Sensor */ + actual_mask = readl(stdev->thermal_base); + writel(actual_mask & ~stdev->flags, stdev->thermal_base); + + clk_disable(stdev->clk); + dev_info(dev, "Suspended.\n"); + + return 0; +} + +static int spear_thermal_resume(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct thermal_zone_device *spear_thermal = platform_get_drvdata(pdev); + struct spear_thermal_dev *stdev = spear_thermal->devdata; + unsigned int actual_mask = 0; + int ret = 0; + + ret = clk_enable(stdev->clk); + if (ret) { + dev_err(&pdev->dev, "Can't enable clock\n"); + return ret; + } + + /* Enable SPEAr Thermal Sensor */ + actual_mask = readl(stdev->thermal_base); + writel(actual_mask | stdev->flags, stdev->thermal_base); + + dev_info(dev, "Resumed.\n"); + + return 0; +} +#endif + +static SIMPLE_DEV_PM_OPS(spear_thermal_pm_ops, spear_thermal_suspend, + spear_thermal_resume); + +static int spear_thermal_probe(struct platform_device *pdev) +{ + struct thermal_zone_device *spear_thermal = NULL; + struct spear_thermal_dev *stdev; + struct spear_thermal_pdata *pdata; + int ret = 0; + struct resource *stres = platform_get_resource(pdev, IORESOURCE_MEM, 0); + + if (!stres) { + dev_err(&pdev->dev, "memory resource missing\n"); + return -ENODEV; + } + + pdata = dev_get_platdata(&pdev->dev); + if (!pdata) { + dev_err(&pdev->dev, "platform data is NULL\n"); + return -EINVAL; + } + + stdev = devm_kzalloc(&pdev->dev, sizeof(*stdev), GFP_KERNEL); + if (!stdev) { + dev_err(&pdev->dev, "kzalloc fail\n"); + return -ENOMEM; + } + + /* Enable thermal sensor */ + stdev->thermal_base = devm_ioremap(&pdev->dev, stres->start, + resource_size(stres)); + if (!stdev->thermal_base) { + dev_err(&pdev->dev, "ioremap failed\n"); + return -ENOMEM; + } + + stdev->clk = clk_get(&pdev->dev, NULL); + if (IS_ERR(stdev->clk)) { + dev_err(&pdev->dev, "Can't get clock\n"); + return PTR_ERR(stdev->clk); + } + + ret = clk_enable(stdev->clk); + if (ret) { + dev_err(&pdev->dev, "Can't enable clock\n"); + goto put_clk; + } + + stdev->flags = pdata->thermal_flags; + writel(stdev->flags, stdev->thermal_base); + + spear_thermal = thermal_zone_device_register("spear_thermal", 0, + stdev, &ops, 0, 0, 0, 0); + if (!spear_thermal) { + dev_err(&pdev->dev, "thermal zone device is NULL\n"); + ret = -EINVAL; + goto disable_clk; + } + + platform_set_drvdata(pdev, spear_thermal); + + dev_info(&spear_thermal->device, "Thermal Sensor Loaded at: 0x%p.\n", + stdev->thermal_base); + + return 0; + +disable_clk: + clk_disable(stdev->clk); +put_clk: + clk_put(stdev->clk); + + return ret; +} + +static int spear_thermal_exit(struct platform_device *pdev) +{ + unsigned int actual_mask = 0; + struct thermal_zone_device *spear_thermal = platform_get_drvdata(pdev); + struct spear_thermal_dev *stdev = spear_thermal->devdata; + + thermal_zone_device_unregister(spear_thermal); + platform_set_drvdata(pdev, NULL); + + /* Disable SPEAr Thermal Sensor */ + actual_mask = readl(stdev->thermal_base); + writel(actual_mask & ~stdev->flags, stdev->thermal_base); + + clk_disable(stdev->clk); + clk_put(stdev->clk); + + return 0; +} + +static struct platform_driver spear_thermal_driver = { + .probe = spear_thermal_probe, + .remove = spear_thermal_exit, + .driver = { + .name = "spear_thermal", + .owner = THIS_MODULE, + .pm = &spear_thermal_pm_ops, + }, +}; + +module_platform_driver(spear_thermal_driver); + +MODULE_AUTHOR("Vincenzo Frascino "); +MODULE_DESCRIPTION("SPEAr thermal driver"); +MODULE_LICENSE("GPL"); diff --git a/include/linux/platform_data/spear_thermal.h b/include/linux/platform_data/spear_thermal.h new file mode 100644 index 000000000000..724f2e1cbbcb --- /dev/null +++ b/include/linux/platform_data/spear_thermal.h @@ -0,0 +1,26 @@ +/* + * SPEAr thermal driver platform data. + * + * Copyright (C) 2011-2012 ST Microelectronics + * Author: Vincenzo Frascino + * + * This software is licensed under the terms of the GNU General Public + * License version 2, as published by the Free Software Foundation, and + * may be copied, distributed, and modified under those terms. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + */ +#ifndef SPEAR_THERMAL_H +#define SPEAR_THERMAL_H + +/* SPEAr Thermal Sensor Platform Data */ +struct spear_thermal_pdata { + /* flags used to enable thermal sensor */ + unsigned int thermal_flags; +}; + +#endif /* SPEAR_THERMAL_H */ -- cgit v1.2.3 From 2feec47d4c5f80b05f1650f5a24865718978eea4 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Tue, 14 Feb 2012 15:00:53 +0800 Subject: ACPICA: ACPI 5: Support for new FADT SleepStatus, SleepControl registers Adds sleep and wake support for systems with these registers. One new file, hwxfsleep.c Signed-off-by: Bob Moore Signed-off-by: Len Brown --- drivers/acpi/acpica/Makefile | 3 +- drivers/acpi/acpica/achware.h | 17 ++ drivers/acpi/acpica/hwsleep.c | 566 +++++++++++++++++++++------------------- drivers/acpi/acpica/hwxfsleep.c | 377 ++++++++++++++++++++++++++ include/acpi/actbl.h | 7 + 5 files changed, 701 insertions(+), 269 deletions(-) create mode 100644 drivers/acpi/acpica/hwxfsleep.c (limited to 'include') diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile index 0ca208b6dcf0..da5518063ef7 100644 --- a/drivers/acpi/acpica/Makefile +++ b/drivers/acpi/acpica/Makefile @@ -73,7 +73,8 @@ acpi-y += \ hwregs.o \ hwsleep.o \ hwvalid.o \ - hwxface.o + hwxface.o \ + hwxfsleep.o acpi-$(ACPI_FUTURE_USAGE) += hwtimer.o diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index 677793e938f5..087f7106412d 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -80,6 +80,23 @@ acpi_status acpi_hw_register_write(u32 register_id, u32 value); acpi_status acpi_hw_clear_acpi_status(void); +/* + * hwsleep - sleep/wake support + */ +void acpi_hw_execute_SST(u32 value); + +acpi_status acpi_hw_extended_sleep(u8 sleep_state); + +acpi_status acpi_hw_legacy_sleep(u8 sleep_state); + +acpi_status acpi_hw_extended_wake_prep(u8 sleep_state); + +acpi_status acpi_hw_extended_wake(u8 sleep_state); + +acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state); + +acpi_status acpi_hw_legacy_wake(u8 sleep_state); + /* * hwvalid - Port I/O with validation */ diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c index 3c4a922a9fc2..59a2a6b897d4 100644 --- a/drivers/acpi/acpica/hwsleep.c +++ b/drivers/acpi/acpica/hwsleep.c @@ -1,7 +1,6 @@ - /****************************************************************************** * - * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface + * Name: hwsleep.c - ACPI Hardware Sleep/Wake Support Functions * *****************************************************************************/ @@ -44,212 +43,183 @@ #include #include "accommon.h" -#include "actables.h" #include #include #define _COMPONENT ACPI_HARDWARE ACPI_MODULE_NAME("hwsleep") +/* Local prototypes */ +static void acpi_hw_execute_GTS(u8 sleep_state); + +static void acpi_hw_execute_BFS(u8 sleep_state); + +static void acpi_hw_execute_WAK(u8 sleep_state); + +static unsigned int gts, bfs; +module_param(gts, uint, 0644); +module_param(bfs, uint, 0644); +MODULE_PARM_DESC(gts, "Enable evaluation of _GTS on suspend."); +MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".); + /******************************************************************************* * - * FUNCTION: acpi_set_firmware_waking_vector + * FUNCTION: acpi_hw_execute_GTS * - * PARAMETERS: physical_address - 32-bit physical address of ACPI real mode - * entry point. + * PARAMETERS: sleep_state - Sleep state that will be entered * - * RETURN: Status + * RETURN: None * - * DESCRIPTION: Sets the 32-bit firmware_waking_vector field of the FACS + * DESCRIPTION: Execute the optional _GTS method (Going To Sleep) * ******************************************************************************/ -acpi_status -acpi_set_firmware_waking_vector(u32 physical_address) -{ - ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector); - - /* - * According to the ACPI specification 2.0c and later, the 64-bit - * waking vector should be cleared and the 32-bit waking vector should - * be used, unless we want the wake-up code to be called by the BIOS in - * Protected Mode. Some systems (for example HP dv5-1004nr) are known - * to fail to resume if the 64-bit vector is used. - */ +static void acpi_hw_execute_GTS(u8 sleep_state) +{ + struct acpi_object_list arg_list; + union acpi_object arg; + acpi_status status; - /* Set the 32-bit vector */ + if (!gts) + return; - acpi_gbl_FACS->firmware_waking_vector = physical_address; + /* One argument, sleep_state */ - /* Clear the 64-bit vector if it exists */ + arg_list.count = 1; + arg_list.pointer = &arg; + arg.type = ACPI_TYPE_INTEGER; + arg.integer.value = sleep_state; - if ((acpi_gbl_FACS->length > 32) && (acpi_gbl_FACS->version >= 1)) { - acpi_gbl_FACS->xfirmware_waking_vector = 0; + status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + ACPI_EXCEPTION((AE_INFO, status, + "While executing method _GTS")); } - - return_ACPI_STATUS(AE_OK); } -ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector) - -#if ACPI_MACHINE_WIDTH == 64 /******************************************************************************* * - * FUNCTION: acpi_set_firmware_waking_vector64 + * FUNCTION: acpi_hw_execute_BFS * - * PARAMETERS: physical_address - 64-bit physical address of ACPI protected - * mode entry point. + * PARAMETERS: sleep_state - Which sleep state we just exited * - * RETURN: Status + * RETURN: None * - * DESCRIPTION: Sets the 64-bit X_firmware_waking_vector field of the FACS, if - * it exists in the table. This function is intended for use with - * 64-bit host operating systems. + * DESCRIPTION: Execute the optional _BFS method (Back From Sleep) * ******************************************************************************/ -acpi_status -acpi_set_firmware_waking_vector64(u64 physical_address) -{ - ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector64); - - /* Determine if the 64-bit vector actually exists */ +static void acpi_hw_execute_BFS(u8 sleep_state) +{ + struct acpi_object_list arg_list; + union acpi_object arg; + acpi_status status; - if ((acpi_gbl_FACS->length <= 32) || (acpi_gbl_FACS->version < 1)) { - return_ACPI_STATUS(AE_NOT_EXIST); - } + if (!bfs) + return; - /* Clear 32-bit vector, set the 64-bit X_ vector */ + /* One argument, sleep_state */ - acpi_gbl_FACS->firmware_waking_vector = 0; - acpi_gbl_FACS->xfirmware_waking_vector = physical_address; + arg_list.count = 1; + arg_list.pointer = &arg; + arg.type = ACPI_TYPE_INTEGER; + arg.integer.value = sleep_state; - return_ACPI_STATUS(AE_OK); + status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + ACPI_EXCEPTION((AE_INFO, status, + "While executing method _BFS")); + } } -ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector64) -#endif - /******************************************************************************* * - * FUNCTION: acpi_enter_sleep_state_prep + * FUNCTION: acpi_hw_execute_WAK * - * PARAMETERS: sleep_state - Which sleep state to enter + * PARAMETERS: sleep_state - Which sleep state we just exited * - * RETURN: Status + * RETURN: None * - * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) - * This function must execute with interrupts enabled. - * We break sleeping into 2 stages so that OSPM can handle - * various OS-specific tasks between the two steps. + * DESCRIPTION: Execute the _WAK method (System Wake) * ******************************************************************************/ -acpi_status acpi_enter_sleep_state_prep(u8 sleep_state) + +static void acpi_hw_execute_WAK(u8 sleep_state) { - acpi_status status; struct acpi_object_list arg_list; union acpi_object arg; + acpi_status status; - ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_prep); - - /* _PSW methods could be run here to enable wake-on keyboard, LAN, etc. */ - - status = acpi_get_sleep_type_data(sleep_state, - &acpi_gbl_sleep_type_a, - &acpi_gbl_sleep_type_b); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Setup parameter object */ + /* One argument, sleep_state */ arg_list.count = 1; arg_list.pointer = &arg; - arg.type = ACPI_TYPE_INTEGER; arg.integer.value = sleep_state; - /* Run the _PTS method */ - - status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL); + status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL); if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { - return_ACPI_STATUS(status); + ACPI_EXCEPTION((AE_INFO, status, + "While executing method _WAK")); } + /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */ +} - /* Setup the argument to _SST */ - - switch (sleep_state) { - case ACPI_STATE_S0: - arg.integer.value = ACPI_SST_WORKING; - break; +/******************************************************************************* + * + * FUNCTION: acpi_hw_execute_SST + * + * PARAMETERS: indicator_id - Value to be passed to the _SST method + * + * RETURN: None + * + * DESCRIPTION: Execute the optional _SST method (System Status) + * + ******************************************************************************/ - case ACPI_STATE_S1: - case ACPI_STATE_S2: - case ACPI_STATE_S3: - arg.integer.value = ACPI_SST_SLEEPING; - break; +void acpi_hw_execute_SST(u32 indicator_id) +{ + struct acpi_object_list arg_list; + union acpi_object arg; + acpi_status status; - case ACPI_STATE_S4: - arg.integer.value = ACPI_SST_SLEEP_CONTEXT; - break; + /* One argument, status indicator ID */ - default: - arg.integer.value = ACPI_SST_INDICATOR_OFF; /* Default is off */ - break; - } + arg_list.count = 1; + arg_list.pointer = &arg; + arg.type = ACPI_TYPE_INTEGER; - /* - * Set the system indicators to show the desired sleep state. - * _SST is an optional method (return no error if not found) - */ + arg.integer.value = indicator_id; status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL); if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { ACPI_EXCEPTION((AE_INFO, status, "While executing method _SST")); } - - return_ACPI_STATUS(AE_OK); } -ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep) - -static unsigned int gts, bfs; -module_param(gts, uint, 0644); -module_param(bfs, uint, 0644); -MODULE_PARM_DESC(gts, "Enable evaluation of _GTS on suspend."); -MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".); - /******************************************************************************* * - * FUNCTION: acpi_enter_sleep_state + * FUNCTION: acpi_hw_legacy_sleep * * PARAMETERS: sleep_state - Which sleep state to enter * * RETURN: Status * - * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231) + * DESCRIPTION: Enter a system sleep state via the legacy FADT PM registers * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED * ******************************************************************************/ -acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) + +acpi_status acpi_hw_legacy_sleep(u8 sleep_state) { - u32 pm1a_control; - u32 pm1b_control; struct acpi_bit_register_info *sleep_type_reg_info; struct acpi_bit_register_info *sleep_enable_reg_info; + u32 pm1a_control; + u32 pm1b_control; u32 in_value; - struct acpi_object_list arg_list; - union acpi_object arg; acpi_status status; - ACPI_FUNCTION_TRACE(acpi_enter_sleep_state); - - if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) || - (acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) { - ACPI_ERROR((AE_INFO, "Sleep values out of range: A=0x%X B=0x%X", - acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b)); - return_ACPI_STATUS(AE_AML_OPERAND_VALUE); - } + ACPI_FUNCTION_TRACE(hw_legacy_sleep); sleep_type_reg_info = acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE); @@ -271,6 +241,18 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) return_ACPI_STATUS(status); } + if (sleep_state != ACPI_STATE_S5) { + /* + * Disable BM arbitration. This feature is contained within an + * optional register (PM2 Control), so ignore a BAD_ADDRESS + * exception. + */ + status = acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 1); + if (ACPI_FAILURE(status) && (status != AE_BAD_ADDRESS)) { + return_ACPI_STATUS(status); + } + } + /* * 1) Disable/Clear all GPEs * 2) Enable all wakeup GPEs @@ -286,19 +268,9 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) return_ACPI_STATUS(status); } - if (gts) { - /* Execute the _GTS method */ + /* Execute the _GTS method (Going To Sleep) */ - arg_list.count = 1; - arg_list.pointer = &arg; - arg.type = ACPI_TYPE_INTEGER; - arg.integer.value = sleep_state; - - status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL); - if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { - return_ACPI_STATUS(status); - } - } + acpi_hw_execute_GTS(sleep_state); /* Get current value of PM1A control */ @@ -375,114 +347,43 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) } } - /* Wait until we enter sleep state */ - - do { - status = acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, - &in_value); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Spin until we wake */ - - } while (!in_value); - - return_ACPI_STATUS(AE_OK); -} - -ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state) - -/******************************************************************************* - * - * FUNCTION: acpi_enter_sleep_state_s4bios - * - * PARAMETERS: None - * - * RETURN: Status - * - * DESCRIPTION: Perform a S4 bios request. - * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED - * - ******************************************************************************/ -acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void) -{ - u32 in_value; - acpi_status status; - - ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_s4bios); - - /* Clear the wake status bit (PM1) */ - - status = - acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - status = acpi_hw_clear_acpi_status(); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* - * 1) Disable/Clear all GPEs - * 2) Enable all wakeup GPEs - */ - status = acpi_hw_disable_all_gpes(); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - acpi_gbl_system_awake_and_running = FALSE; - - status = acpi_hw_enable_all_wakeup_gpes(); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - ACPI_FLUSH_CPU_CACHE(); - - status = acpi_hw_write_port(acpi_gbl_FADT.smi_command, - (u32) acpi_gbl_FADT.S4bios_request, 8); + /* Wait for transition back to Working State */ do { - acpi_os_stall(1000); status = acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } + } while (!in_value); return_ACPI_STATUS(AE_OK); } -ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios) - /******************************************************************************* * - * FUNCTION: acpi_leave_sleep_state_prep + * FUNCTION: acpi_hw_legacy_wake_prep * - * PARAMETERS: sleep_state - Which sleep state we are exiting + * PARAMETERS: sleep_state - Which sleep state we just exited * * RETURN: Status * * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a * sleep. - * Called with interrupts DISABLED. + * Called with interrupts ENABLED. * ******************************************************************************/ -acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) + +acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state) { - struct acpi_object_list arg_list; - union acpi_object arg; acpi_status status; struct acpi_bit_register_info *sleep_type_reg_info; struct acpi_bit_register_info *sleep_enable_reg_info; u32 pm1a_control; u32 pm1b_control; - ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep); + ACPI_FUNCTION_TRACE(hw_legacy_wake_prep); /* * Set SLP_TYPE and SLP_EN to state S0. @@ -525,25 +426,13 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) } } - if (bfs) { - /* Execute the _BFS method */ - - arg_list.count = 1; - arg_list.pointer = &arg; - arg.type = ACPI_TYPE_INTEGER; - arg.integer.value = sleep_state; - - status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL); - if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { - ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS")); - } - } + acpi_hw_execute_BFS(sleep_state); return_ACPI_STATUS(status); } /******************************************************************************* * - * FUNCTION: acpi_leave_sleep_state + * FUNCTION: acpi_hw_legacy_wake * * PARAMETERS: sleep_state - Which sleep state we just exited * @@ -553,31 +442,17 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) * Called with interrupts ENABLED. * ******************************************************************************/ -acpi_status acpi_leave_sleep_state(u8 sleep_state) + +acpi_status acpi_hw_legacy_wake(u8 sleep_state) { - struct acpi_object_list arg_list; - union acpi_object arg; acpi_status status; - ACPI_FUNCTION_TRACE(acpi_leave_sleep_state); + ACPI_FUNCTION_TRACE(hw_legacy_wake); /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */ acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID; - - /* Setup parameter object */ - - arg_list.count = 1; - arg_list.pointer = &arg; - arg.type = ACPI_TYPE_INTEGER; - - /* Ignore any errors from these methods */ - - arg.integer.value = ACPI_SST_WAKING; - status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL); - if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { - ACPI_EXCEPTION((AE_INFO, status, "During Method _SST")); - } + acpi_hw_execute_SST(ACPI_SST_WAKING); /* * GPEs must be enabled before _WAK is called as GPEs @@ -591,46 +466,201 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state) if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } + status = acpi_hw_enable_all_runtime_gpes(); if (ACPI_FAILURE(status)) { return_ACPI_STATUS(status); } - arg.integer.value = sleep_state; - status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL); - if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { - ACPI_EXCEPTION((AE_INFO, status, "During Method _WAK")); - } - /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */ + /* + * Now we can execute _WAK, etc. Some machines require that the GPEs + * are enabled before the wake methods are executed. + */ + acpi_hw_execute_WAK(sleep_state); /* - * Some BIOSes assume that WAK_STS will be cleared on resume and use - * it to determine whether the system is rebooting or resuming. Clear - * it for compatibility. + * Some BIOS code assumes that WAK_STS will be cleared on resume + * and use it to determine whether the system is rebooting or + * resuming. Clear WAK_STS for compatibility. */ acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS, 1); - acpi_gbl_system_awake_and_running = TRUE; /* Enable power button */ (void) acpi_write_bit_register(acpi_gbl_fixed_event_info - [ACPI_EVENT_POWER_BUTTON]. - enable_register_id, ACPI_ENABLE_EVENT); + [ACPI_EVENT_POWER_BUTTON]. + enable_register_id, ACPI_ENABLE_EVENT); (void) acpi_write_bit_register(acpi_gbl_fixed_event_info - [ACPI_EVENT_POWER_BUTTON]. - status_register_id, ACPI_CLEAR_STATUS); + [ACPI_EVENT_POWER_BUTTON]. + status_register_id, ACPI_CLEAR_STATUS); - arg.integer.value = ACPI_SST_WORKING; - status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL); - if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { - ACPI_EXCEPTION((AE_INFO, status, "During Method _SST")); + /* + * Enable BM arbitration. This feature is contained within an + * optional register (PM2 Control), so ignore a BAD_ADDRESS + * exception. + */ + status = acpi_write_bit_register(ACPI_BITREG_ARB_DISABLE, 0); + if (ACPI_FAILURE(status) && (status != AE_BAD_ADDRESS)) { + return_ACPI_STATUS(status); } + acpi_hw_execute_SST(ACPI_SST_WORKING); return_ACPI_STATUS(status); } -ACPI_EXPORT_SYMBOL(acpi_leave_sleep_state) + +/******************************************************************************* + * + * FUNCTION: acpi_hw_extended_sleep + * + * PARAMETERS: sleep_state - Which sleep state to enter + * + * RETURN: Status + * + * DESCRIPTION: Enter a system sleep state via the extended FADT sleep + * registers (V5 FADT). + * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED + * + ******************************************************************************/ + +acpi_status acpi_hw_extended_sleep(u8 sleep_state) +{ + acpi_status status; + u8 sleep_type_value; + u64 sleep_status; + + ACPI_FUNCTION_TRACE(hw_extended_sleep); + + /* Extended sleep registers must be valid */ + + if (!acpi_gbl_FADT.sleep_control.address || + !acpi_gbl_FADT.sleep_status.address) { + return_ACPI_STATUS(AE_NOT_EXIST); + } + + /* Clear wake status (WAK_STS) */ + + status = acpi_write(ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + acpi_gbl_system_awake_and_running = FALSE; + + /* Execute the _GTS method (Going To Sleep) */ + + acpi_hw_execute_GTS(sleep_state); + + /* Flush caches, as per ACPI specification */ + + ACPI_FLUSH_CPU_CACHE(); + + /* + * Set the SLP_TYP and SLP_EN bits. + * + * Note: We only use the first value returned by the \_Sx method + * (acpi_gbl_sleep_type_a) - As per ACPI specification. + */ + ACPI_DEBUG_PRINT((ACPI_DB_INIT, + "Entering sleep state [S%u]\n", sleep_state)); + + sleep_type_value = + ((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) & + ACPI_X_SLEEP_TYPE_MASK); + + status = acpi_write((sleep_type_value | ACPI_X_SLEEP_ENABLE), + &acpi_gbl_FADT.sleep_control); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Wait for transition back to Working State */ + + do { + status = acpi_read(&sleep_status, &acpi_gbl_FADT.sleep_status); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + } while (!(((u8)sleep_status) & ACPI_X_WAKE_STATUS)); + + return_ACPI_STATUS(AE_OK); +} + +/******************************************************************************* + * + * FUNCTION: acpi_hw_extended_wake_prep + * + * PARAMETERS: sleep_state - Which sleep state we just exited + * + * RETURN: Status + * + * DESCRIPTION: Perform first part of OS-independent ACPI cleanup after + * a sleep. Called with interrupts ENABLED. + * + ******************************************************************************/ + +acpi_status acpi_hw_extended_wake_prep(u8 sleep_state) +{ + acpi_status status; + u8 sleep_type_value; + + ACPI_FUNCTION_TRACE(hw_extended_wake_prep); + + status = acpi_get_sleep_type_data(ACPI_STATE_S0, + &acpi_gbl_sleep_type_a, + &acpi_gbl_sleep_type_b); + if (ACPI_SUCCESS(status)) { + sleep_type_value = + ((acpi_gbl_sleep_type_a << ACPI_X_SLEEP_TYPE_POSITION) & + ACPI_X_SLEEP_TYPE_MASK); + + (void)acpi_write((sleep_type_value | ACPI_X_SLEEP_ENABLE), + &acpi_gbl_FADT.sleep_control); + } + + acpi_hw_execute_BFS(sleep_state); + return_ACPI_STATUS(AE_OK); +} + +/******************************************************************************* + * + * FUNCTION: acpi_hw_extended_wake + * + * PARAMETERS: sleep_state - Which sleep state we just exited + * + * RETURN: Status + * + * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep + * Called with interrupts ENABLED. + * + ******************************************************************************/ + +acpi_status acpi_hw_extended_wake(u8 sleep_state) +{ + ACPI_FUNCTION_TRACE(hw_extended_wake); + + /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */ + + acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID; + + /* Execute the wake methods */ + + acpi_hw_execute_SST(ACPI_SST_WAKING); + acpi_hw_execute_WAK(sleep_state); + + /* + * Some BIOS code assumes that WAK_STS will be cleared on resume + * and use it to determine whether the system is rebooting or + * resuming. Clear WAK_STS for compatibility. + */ + (void)acpi_write(ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status); + acpi_gbl_system_awake_and_running = TRUE; + + acpi_hw_execute_SST(ACPI_SST_WORKING); + return_ACPI_STATUS(AE_OK); +} diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c new file mode 100644 index 000000000000..29c0fd3810b0 --- /dev/null +++ b/drivers/acpi/acpica/hwxfsleep.c @@ -0,0 +1,377 @@ +/****************************************************************************** + * + * Name: hwxfsleep.c - ACPI Hardware Sleep/Wake External Interfaces + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, Intel Corp. + * 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, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. + */ + +#include +#include "accommon.h" +#include + +#define _COMPONENT ACPI_HARDWARE +ACPI_MODULE_NAME("hwxfsleep") + +/******************************************************************************* + * + * FUNCTION: acpi_set_firmware_waking_vector + * + * PARAMETERS: physical_address - 32-bit physical address of ACPI real mode + * entry point. + * + * RETURN: Status + * + * DESCRIPTION: Sets the 32-bit firmware_waking_vector field of the FACS + * + ******************************************************************************/ +acpi_status acpi_set_firmware_waking_vector(u32 physical_address) +{ + ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector); + + + /* + * According to the ACPI specification 2.0c and later, the 64-bit + * waking vector should be cleared and the 32-bit waking vector should + * be used, unless we want the wake-up code to be called by the BIOS in + * Protected Mode. Some systems (for example HP dv5-1004nr) are known + * to fail to resume if the 64-bit vector is used. + */ + + /* Set the 32-bit vector */ + + acpi_gbl_FACS->firmware_waking_vector = physical_address; + + /* Clear the 64-bit vector if it exists */ + + if ((acpi_gbl_FACS->length > 32) && (acpi_gbl_FACS->version >= 1)) { + acpi_gbl_FACS->xfirmware_waking_vector = 0; + } + + return_ACPI_STATUS(AE_OK); +} + +ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector) + +#if ACPI_MACHINE_WIDTH == 64 +/******************************************************************************* + * + * FUNCTION: acpi_set_firmware_waking_vector64 + * + * PARAMETERS: physical_address - 64-bit physical address of ACPI protected + * mode entry point. + * + * RETURN: Status + * + * DESCRIPTION: Sets the 64-bit X_firmware_waking_vector field of the FACS, if + * it exists in the table. This function is intended for use with + * 64-bit host operating systems. + * + ******************************************************************************/ +acpi_status acpi_set_firmware_waking_vector64(u64 physical_address) +{ + ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector64); + + + /* Determine if the 64-bit vector actually exists */ + + if ((acpi_gbl_FACS->length <= 32) || (acpi_gbl_FACS->version < 1)) { + return_ACPI_STATUS(AE_NOT_EXIST); + } + + /* Clear 32-bit vector, set the 64-bit X_ vector */ + + acpi_gbl_FACS->firmware_waking_vector = 0; + acpi_gbl_FACS->xfirmware_waking_vector = physical_address; + return_ACPI_STATUS(AE_OK); +} + +ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector64) +#endif + +/******************************************************************************* + * + * FUNCTION: acpi_enter_sleep_state_s4bios + * + * PARAMETERS: None + * + * RETURN: Status + * + * DESCRIPTION: Perform a S4 bios request. + * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED + * + ******************************************************************************/ +acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void) +{ + u32 in_value; + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_s4bios); + + /* Clear the wake status bit (PM1) */ + + status = + acpi_write_bit_register(ACPI_BITREG_WAKE_STATUS, ACPI_CLEAR_STATUS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + status = acpi_hw_clear_acpi_status(); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* + * 1) Disable/Clear all GPEs + * 2) Enable all wakeup GPEs + */ + status = acpi_hw_disable_all_gpes(); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + acpi_gbl_system_awake_and_running = FALSE; + + status = acpi_hw_enable_all_wakeup_gpes(); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + ACPI_FLUSH_CPU_CACHE(); + + status = acpi_hw_write_port(acpi_gbl_FADT.smi_command, + (u32)acpi_gbl_FADT.S4bios_request, 8); + + do { + acpi_os_stall(1000); + status = + acpi_read_bit_register(ACPI_BITREG_WAKE_STATUS, &in_value); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + } while (!in_value); + + return_ACPI_STATUS(AE_OK); +} + +ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios) + +/******************************************************************************* + * + * FUNCTION: acpi_enter_sleep_state_prep + * + * PARAMETERS: sleep_state - Which sleep state to enter + * + * RETURN: Status + * + * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) + * This function must execute with interrupts enabled. + * We break sleeping into 2 stages so that OSPM can handle + * various OS-specific tasks between the two steps. + * + ******************************************************************************/ +acpi_status acpi_enter_sleep_state_prep(u8 sleep_state) +{ + acpi_status status; + struct acpi_object_list arg_list; + union acpi_object arg; + u32 sst_value; + + ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_prep); + + /* _PSW methods could be run here to enable wake-on keyboard, LAN, etc. */ + + status = acpi_get_sleep_type_data(sleep_state, + &acpi_gbl_sleep_type_a, + &acpi_gbl_sleep_type_b); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Execute the _PTS method (Prepare To Sleep) */ + + arg_list.count = 1; + arg_list.pointer = &arg; + arg.type = ACPI_TYPE_INTEGER; + arg.integer.value = sleep_state; + + status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL); + if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { + return_ACPI_STATUS(status); + } + + /* Setup the argument to the _SST method (System STatus) */ + + switch (sleep_state) { + case ACPI_STATE_S0: + sst_value = ACPI_SST_WORKING; + break; + + case ACPI_STATE_S1: + case ACPI_STATE_S2: + case ACPI_STATE_S3: + sst_value = ACPI_SST_SLEEPING; + break; + + case ACPI_STATE_S4: + sst_value = ACPI_SST_SLEEP_CONTEXT; + break; + + default: + sst_value = ACPI_SST_INDICATOR_OFF; /* Default is off */ + break; + } + + /* + * Set the system indicators to show the desired sleep state. + * _SST is an optional method (return no error if not found) + */ + acpi_hw_execute_SST(sst_value); + return_ACPI_STATUS(AE_OK); +} + +ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep) + +/******************************************************************************* + * + * FUNCTION: acpi_enter_sleep_state + * + * PARAMETERS: sleep_state - Which sleep state to enter + * + * RETURN: Status + * + * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231) + * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED + * + ******************************************************************************/ +acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_enter_sleep_state); + + if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) || + (acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) { + ACPI_ERROR((AE_INFO, "Sleep values out of range: A=0x%X B=0x%X", + acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b)); + return_ACPI_STATUS(AE_AML_OPERAND_VALUE); + } + + /* If Hardware Reduced flag is set, must use the extended sleep registers */ + + if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { + status = acpi_hw_extended_sleep(sleep_state); + } else { + /* Legacy sleep */ + + status = acpi_hw_legacy_sleep(sleep_state); + } + + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state) + +/******************************************************************************* + * + * FUNCTION: acpi_leave_sleep_state_prep + * + * PARAMETERS: sleep_state - Which sleep state we are exiting + * + * RETURN: Status + * + * DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a + * sleep. + * Called with interrupts DISABLED. + * + ******************************************************************************/ +acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_leave_sleep_state); + + + /* If Hardware Reduced flag is set, must use the extended sleep registers */ + + if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { + status = acpi_hw_extended_wake_prep(sleep_state); + } else { + /* Legacy sleep */ + + status = acpi_hw_legacy_wake_prep(sleep_state); + } + + + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_leave_sleep_state_prep) + +/******************************************************************************* + * + * FUNCTION: acpi_leave_sleep_state + * + * PARAMETERS: sleep_state - Which sleep state we just exited + * + * RETURN: Status + * + * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep + * Called with interrupts ENABLED. + * + ******************************************************************************/ +acpi_status acpi_leave_sleep_state(u8 sleep_state) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_leave_sleep_state); + + + /* If Hardware Reduced flag is set, must use the extended sleep registers */ + + if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { + status = acpi_hw_extended_wake(sleep_state); + } else { + /* Legacy sleep */ + + status = acpi_hw_legacy_wake(sleep_state); + } + + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_leave_sleep_state) diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h index 8e1b92f6f650..8dea54665dcf 100644 --- a/include/acpi/actbl.h +++ b/include/acpi/actbl.h @@ -309,6 +309,13 @@ enum acpi_prefered_pm_profiles { PM_TABLET = 8 }; +/* Values for sleep_status and sleep_control registers (V5 FADT) */ + +#define ACPI_X_WAKE_STATUS 0x80 +#define ACPI_X_SLEEP_TYPE_MASK 0x1C +#define ACPI_X_SLEEP_TYPE_POSITION 0x02 +#define ACPI_X_SLEEP_ENABLE 0x20 + /* Reset to default packing */ #pragma pack() -- cgit v1.2.3 From d08310fe0d6bd8c82da94e8d8ef48bdbe14d2bd1 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Tue, 14 Feb 2012 15:22:51 +0800 Subject: ACPICA: Move ACPI timer prototypes to public acpixf file These prototypes were incorrectly declared in achware.h. Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/achware.h | 12 ------------ include/acpi/acpixf.h | 12 ++++++++++++ 2 files changed, 12 insertions(+), 12 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index 087f7106412d..eed204acf0f9 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -145,16 +145,4 @@ acpi_status acpi_hw_derive_pci_id(struct acpi_pci_id *pci_id, acpi_handle root_pci_device, acpi_handle pci_region); -#ifdef ACPI_FUTURE_USAGE -/* - * hwtimer - ACPI Timer prototypes - */ -acpi_status acpi_get_timer_resolution(u32 * resolution); - -acpi_status acpi_get_timer(u32 * ticks); - -acpi_status -acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 * time_elapsed); -#endif /* ACPI_FUTURE_USAGE */ - #endif /* __ACHWARE_H__ */ diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index a28da35ba45e..67cd51c8ee0a 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -418,6 +418,18 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state); acpi_status acpi_leave_sleep_state(u8 sleep_state); +/* + * ACPI Timer interfaces + */ +#ifdef ACPI_FUTURE_USAGE +acpi_status acpi_get_timer_resolution(u32 *resolution); + +acpi_status acpi_get_timer(u32 *ticks); + +acpi_status +acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 *time_elapsed); +#endif /* ACPI_FUTURE_USAGE */ + /* * Error/Warning output */ -- cgit v1.2.3 From 33620c5419e8a11814dd11e02a80e6ef77a43407 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Tue, 14 Feb 2012 18:14:27 +0800 Subject: ACPICA: Support for custom ACPICA build for ACPI 5 reduced hardware Add ACPI_REDUCED_HARDWARE flag that removes all hardware-related code (about 10% code, 5% static data). Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/accommon.h | 1 - drivers/acpi/acpica/acconfig.h | 231 --------------------- drivers/acpi/acpica/acdebug.h | 8 +- drivers/acpi/acpica/acevents.h | 21 +- drivers/acpi/acpica/acglobal.h | 11 +- drivers/acpi/acpica/evevent.c | 4 +- drivers/acpi/acpica/evglock.c | 4 +- drivers/acpi/acpica/evgpe.c | 4 +- drivers/acpi/acpica/evgpeblk.c | 4 +- drivers/acpi/acpica/evgpeinit.c | 4 +- drivers/acpi/acpica/evgpeutil.c | 3 + drivers/acpi/acpica/evmisc.c | 3 + drivers/acpi/acpica/evsci.c | 4 +- drivers/acpi/acpica/evxface.c | 436 ++++++++++++++++++++-------------------- drivers/acpi/acpica/evxfevnt.c | 2 + drivers/acpi/acpica/evxfgpe.c | 2 + drivers/acpi/acpica/hwacpi.c | 3 + drivers/acpi/acpica/hwgpe.c | 4 +- drivers/acpi/acpica/hwregs.c | 8 +- drivers/acpi/acpica/hwsleep.c | 2 + drivers/acpi/acpica/hwtimer.c | 2 + drivers/acpi/acpica/hwxface.c | 3 +- drivers/acpi/acpica/hwxfsleep.c | 22 +- drivers/acpi/acpica/tbutils.c | 2 + drivers/acpi/acpica/utglobal.c | 9 +- drivers/acpi/acpica/utinit.c | 37 +++- drivers/acpi/acpica/utxface.c | 6 +- include/acpi/acconfig.h | 248 +++++++++++++++++++++++ include/acpi/acexcep.h | 6 +- include/acpi/acpixf.h | 219 +++++++++++++------- 30 files changed, 762 insertions(+), 551 deletions(-) delete mode 100644 drivers/acpi/acpica/acconfig.h create mode 100644 include/acpi/acconfig.h (limited to 'include') diff --git a/drivers/acpi/acpica/accommon.h b/drivers/acpi/acpica/accommon.h index a44bd424f9f4..8a7d51bfb3b3 100644 --- a/drivers/acpi/acpica/accommon.h +++ b/drivers/acpi/acpica/accommon.h @@ -51,7 +51,6 @@ * * Note: The order of these include files is important. */ -#include "acconfig.h" /* Global configuration constants */ #include "acmacros.h" /* C macros */ #include "aclocal.h" /* Internal data types */ #include "acobject.h" /* ACPI internal object */ diff --git a/drivers/acpi/acpica/acconfig.h b/drivers/acpi/acpica/acconfig.h deleted file mode 100644 index 3748f1a09851..000000000000 --- a/drivers/acpi/acpica/acconfig.h +++ /dev/null @@ -1,231 +0,0 @@ -/****************************************************************************** - * - * Name: acconfig.h - Global configuration constants - * - *****************************************************************************/ - -/* - * Copyright (C) 2000 - 2012, Intel Corp. - * 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, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. - */ - -#ifndef _ACCONFIG_H -#define _ACCONFIG_H - -/****************************************************************************** - * - * Configuration options - * - *****************************************************************************/ - -/* - * ACPI_DEBUG_OUTPUT - This switch enables all the debug facilities of the - * ACPI subsystem. This includes the DEBUG_PRINT output - * statements. When disabled, all DEBUG_PRINT - * statements are compiled out. - * - * ACPI_APPLICATION - Use this switch if the subsystem is going to be run - * at the application level. - * - */ - -/* - * OS name, used for the _OS object. The _OS object is essentially obsolete, - * but there is a large base of ASL/AML code in existing machines that check - * for the string below. The use of this string usually guarantees that - * the ASL will execute down the most tested code path. Also, there is some - * code that will not execute the _OSI method unless _OS matches the string - * below. Therefore, change this string at your own risk. - */ -#define ACPI_OS_NAME "Microsoft Windows NT" - -/* Maximum objects in the various object caches */ - -#define ACPI_MAX_STATE_CACHE_DEPTH 96 /* State objects */ -#define ACPI_MAX_PARSE_CACHE_DEPTH 96 /* Parse tree objects */ -#define ACPI_MAX_EXTPARSE_CACHE_DEPTH 96 /* Parse tree objects */ -#define ACPI_MAX_OBJECT_CACHE_DEPTH 96 /* Interpreter operand objects */ -#define ACPI_MAX_NAMESPACE_CACHE_DEPTH 96 /* Namespace objects */ - -/* - * Should the subsystem abort the loading of an ACPI table if the - * table checksum is incorrect? - */ -#define ACPI_CHECKSUM_ABORT FALSE - -/****************************************************************************** - * - * Subsystem Constants - * - *****************************************************************************/ - -/* Version of ACPI supported */ - -#define ACPI_CA_SUPPORT_LEVEL 5 - -/* Maximum count for a semaphore object */ - -#define ACPI_MAX_SEMAPHORE_COUNT 256 - -/* Maximum object reference count (detects object deletion issues) */ - -#define ACPI_MAX_REFERENCE_COUNT 0x1000 - -/* Default page size for use in mapping memory for operation regions */ - -#define ACPI_DEFAULT_PAGE_SIZE 4096 /* Must be power of 2 */ - -/* owner_id tracking. 8 entries allows for 255 owner_ids */ - -#define ACPI_NUM_OWNERID_MASKS 8 - -/* Size of the root table array is increased by this increment */ - -#define ACPI_ROOT_TABLE_SIZE_INCREMENT 4 - -/* Maximum number of While() loop iterations before forced abort */ - -#define ACPI_MAX_LOOP_ITERATIONS 0xFFFF - -/* Maximum sleep allowed via Sleep() operator */ - -#define ACPI_MAX_SLEEP 2000 /* Two seconds */ - -/* Address Range lists are per-space_id (Memory and I/O only) */ - -#define ACPI_ADDRESS_RANGE_MAX 2 - -/****************************************************************************** - * - * ACPI Specification constants (Do not change unless the specification changes) - * - *****************************************************************************/ - -/* Number of distinct GPE register blocks and register width */ - -#define ACPI_MAX_GPE_BLOCKS 2 -#define ACPI_GPE_REGISTER_WIDTH 8 - -/* Method info (in WALK_STATE), containing local variables and argumetns */ - -#define ACPI_METHOD_NUM_LOCALS 8 -#define ACPI_METHOD_MAX_LOCAL 7 - -#define ACPI_METHOD_NUM_ARGS 7 -#define ACPI_METHOD_MAX_ARG 6 - -/* Length of _HID, _UID, _CID, and UUID values */ - -#define ACPI_DEVICE_ID_LENGTH 0x09 -#define ACPI_MAX_CID_LENGTH 48 -#define ACPI_UUID_LENGTH 16 - -/* - * Operand Stack (in WALK_STATE), Must be large enough to contain METHOD_MAX_ARG - */ -#define ACPI_OBJ_NUM_OPERANDS 8 -#define ACPI_OBJ_MAX_OPERAND 7 - -/* Number of elements in the Result Stack frame, can be an arbitrary value */ - -#define ACPI_RESULTS_FRAME_OBJ_NUM 8 - -/* - * Maximal number of elements the Result Stack can contain, - * it may be an arbitray value not exceeding the types of - * result_size and result_count (now u8). - */ -#define ACPI_RESULTS_OBJ_NUM_MAX 255 - -/* Names within the namespace are 4 bytes long */ - -#define ACPI_NAME_SIZE 4 -#define ACPI_PATH_SEGMENT_LENGTH 5 /* 4 chars for name + 1 char for separator */ -#define ACPI_PATH_SEPARATOR '.' - -/* Sizes for ACPI table headers */ - -#define ACPI_OEM_ID_SIZE 6 -#define ACPI_OEM_TABLE_ID_SIZE 8 - -/* Constants used in searching for the RSDP in low memory */ - -#define ACPI_EBDA_PTR_LOCATION 0x0000040E /* Physical Address */ -#define ACPI_EBDA_PTR_LENGTH 2 -#define ACPI_EBDA_WINDOW_SIZE 1024 -#define ACPI_HI_RSDP_WINDOW_BASE 0x000E0000 /* Physical Address */ -#define ACPI_HI_RSDP_WINDOW_SIZE 0x00020000 -#define ACPI_RSDP_SCAN_STEP 16 - -/* Operation regions */ - -#define ACPI_USER_REGION_BEGIN 0x80 - -/* Maximum space_ids for Operation Regions */ - -#define ACPI_MAX_ADDRESS_SPACE 255 - -/* Array sizes. Used for range checking also */ - -#define ACPI_MAX_MATCH_OPCODE 5 - -/* RSDP checksums */ - -#define ACPI_RSDP_CHECKSUM_LENGTH 20 -#define ACPI_RSDP_XCHECKSUM_LENGTH 36 - -/* SMBus, GSBus and IPMI bidirectional buffer size */ - -#define ACPI_SMBUS_BUFFER_SIZE 34 -#define ACPI_GSBUS_BUFFER_SIZE 34 -#define ACPI_IPMI_BUFFER_SIZE 66 - -/* _sx_d and _sx_w control methods */ - -#define ACPI_NUM_sx_d_METHODS 4 -#define ACPI_NUM_sx_w_METHODS 5 - -/****************************************************************************** - * - * ACPI AML Debugger - * - *****************************************************************************/ - -#define ACPI_DEBUGGER_MAX_ARGS 8 /* Must be max method args + 1 */ - -#define ACPI_DEBUGGER_COMMAND_PROMPT '-' -#define ACPI_DEBUGGER_EXECUTE_PROMPT '%' - -#endif /* _ACCONFIG_H */ diff --git a/drivers/acpi/acpica/acdebug.h b/drivers/acpi/acpica/acdebug.h index deaa81979561..5e8abb07724f 100644 --- a/drivers/acpi/acpica/acdebug.h +++ b/drivers/acpi/acpica/acdebug.h @@ -111,7 +111,7 @@ acpi_status acpi_db_find_name_in_namespace(char *name_arg); void acpi_db_set_scope(char *name); -acpi_status acpi_db_sleep(char *object_arg); +ACPI_HW_DEPENDENT_RETURN_OK(acpi_status acpi_db_sleep(char *object_arg)) void acpi_db_find_references(char *object_arg); @@ -119,11 +119,13 @@ void acpi_db_display_locks(void); void acpi_db_display_resources(char *object_arg); -void acpi_db_display_gpes(void); +ACPI_HW_DEPENDENT_RETURN_VOID(void acpi_db_display_gpes(void)) void acpi_db_check_integrity(void); -void acpi_db_generate_gpe(char *gpe_arg, char *block_arg); +ACPI_HW_DEPENDENT_RETURN_VOID(void + acpi_db_generate_gpe(char *gpe_arg, + char *block_arg)) void acpi_db_check_predefined_names(void); diff --git a/drivers/acpi/acpica/acevents.h b/drivers/acpi/acpica/acevents.h index c53caa521a30..d700f63e4701 100644 --- a/drivers/acpi/acpica/acevents.h +++ b/drivers/acpi/acpica/acevents.h @@ -69,11 +69,10 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node *node, */ acpi_status acpi_ev_init_global_lock_handler(void); -acpi_status acpi_ev_acquire_global_lock(u16 timeout); - -acpi_status acpi_ev_release_global_lock(void); - -acpi_status acpi_ev_remove_global_lock_handler(void); +ACPI_HW_DEPENDENT_RETURN_OK(acpi_status + acpi_ev_acquire_global_lock(u16 timeout)) + ACPI_HW_DEPENDENT_RETURN_OK(acpi_status acpi_ev_release_global_lock(void)) + acpi_status acpi_ev_remove_global_lock_handler(void); /* * evgpe - Low-level GPE support @@ -114,7 +113,9 @@ acpi_ev_initialize_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, struct acpi_gpe_block_info *gpe_block, void *context); -acpi_status acpi_ev_delete_gpe_block(struct acpi_gpe_block_info *gpe_block); +ACPI_HW_DEPENDENT_RETURN_OK(acpi_status + acpi_ev_delete_gpe_block(struct acpi_gpe_block_info + *gpe_block)) u32 acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device, @@ -126,9 +127,10 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device, */ acpi_status acpi_ev_gpe_initialize(void); -void acpi_ev_update_gpes(acpi_owner_id table_owner_id); +ACPI_HW_DEPENDENT_RETURN_VOID(void + acpi_ev_update_gpes(acpi_owner_id table_owner_id)) -acpi_status + acpi_status acpi_ev_match_gpe_method(acpi_handle obj_handle, u32 level, void *context, void **return_value); @@ -237,6 +239,5 @@ acpi_status acpi_ev_remove_sci_handler(void); u32 acpi_ev_initialize_sCI(u32 program_sCI); -void acpi_ev_terminate(void); - +ACPI_HW_DEPENDENT_RETURN_VOID(void acpi_ev_terminate(void)) #endif /* __ACEVENTS_H__ */ diff --git a/drivers/acpi/acpica/acglobal.h b/drivers/acpi/acpica/acglobal.h index 2853f7673f3b..4f7d3f57d05c 100644 --- a/drivers/acpi/acpica/acglobal.h +++ b/drivers/acpi/acpica/acglobal.h @@ -147,7 +147,7 @@ u8 acpi_gbl_system_awake_and_running; */ u8 acpi_gbl_reduced_hardware; -#endif +#endif /* DEFINE_ACPI_GLOBALS */ /* Do not disassemble buffers to resource descriptors */ @@ -184,8 +184,12 @@ ACPI_EXTERN u32 acpi_gbl_trace_dbg_layer; * found in the RSDT/XSDT. */ ACPI_EXTERN struct acpi_table_list acpi_gbl_root_table_list; + +#if (!ACPI_REDUCED_HARDWARE) ACPI_EXTERN struct acpi_table_facs *acpi_gbl_FACS; +#endif /* !ACPI_REDUCED_HARDWARE */ + /* These addresses are calculated from the FADT Event Block addresses */ ACPI_EXTERN struct acpi_generic_address acpi_gbl_xpm1a_status; @@ -397,10 +401,15 @@ ACPI_EXTERN struct acpi_fixed_event_handler ACPI_EXTERN struct acpi_gpe_xrupt_info *acpi_gbl_gpe_xrupt_list_head; ACPI_EXTERN struct acpi_gpe_block_info *acpi_gbl_gpe_fadt_blocks[ACPI_MAX_GPE_BLOCKS]; + +#if (!ACPI_REDUCED_HARDWARE) + ACPI_EXTERN u8 acpi_gbl_all_gpes_initialized; ACPI_EXTERN ACPI_GBL_EVENT_HANDLER acpi_gbl_global_event_handler; ACPI_EXTERN void *acpi_gbl_global_event_handler_context; +#endif /* !ACPI_REDUCED_HARDWARE */ + /***************************************************************************** * * Debugger globals diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c index 6729ebe2f1e6..07e4dc44f81c 100644 --- a/drivers/acpi/acpica/evevent.c +++ b/drivers/acpi/acpica/evevent.c @@ -47,7 +47,7 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evevent") - +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /* Local prototypes */ static acpi_status acpi_ev_fixed_event_initialize(void); @@ -291,3 +291,5 @@ static u32 acpi_ev_fixed_event_dispatch(u32 event) return ((acpi_gbl_fixed_event_handlers[event]. handler) (acpi_gbl_fixed_event_handlers[event].context)); } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evglock.c b/drivers/acpi/acpica/evglock.c index 5e5683cb1f0d..cfeab38795d8 100644 --- a/drivers/acpi/acpica/evglock.c +++ b/drivers/acpi/acpica/evglock.c @@ -48,7 +48,7 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evglock") - +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /* Local prototypes */ static u32 acpi_ev_global_lock_handler(void *context); @@ -339,3 +339,5 @@ acpi_status acpi_ev_release_global_lock(void) acpi_os_release_mutex(acpi_gbl_global_lock_mutex->mutex.os_mutex); return_ACPI_STATUS(status); } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evgpe.c b/drivers/acpi/acpica/evgpe.c index 9e88cb6fb25e..8ba0e5f17091 100644 --- a/drivers/acpi/acpica/evgpe.c +++ b/drivers/acpi/acpica/evgpe.c @@ -48,7 +48,7 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evgpe") - +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /* Local prototypes */ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context); @@ -766,3 +766,5 @@ acpi_ev_gpe_dispatch(struct acpi_namespace_node *gpe_device, return_UINT32(ACPI_INTERRUPT_HANDLED); } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c index be75339cd5dd..23a3ca86b2eb 100644 --- a/drivers/acpi/acpica/evgpeblk.c +++ b/drivers/acpi/acpica/evgpeblk.c @@ -48,7 +48,7 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evgpeblk") - +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /* Local prototypes */ static acpi_status acpi_ev_install_gpe_block(struct acpi_gpe_block_info *gpe_block, @@ -504,3 +504,5 @@ acpi_ev_initialize_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, return_ACPI_STATUS(AE_OK); } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evgpeinit.c b/drivers/acpi/acpica/evgpeinit.c index adf7494da9db..da0add858f81 100644 --- a/drivers/acpi/acpica/evgpeinit.c +++ b/drivers/acpi/acpica/evgpeinit.c @@ -48,7 +48,7 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evgpeinit") - +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /* * Note: History of _PRW support in ACPICA * @@ -440,3 +440,5 @@ acpi_ev_match_gpe_method(acpi_handle obj_handle, name, gpe_number)); return_ACPI_STATUS(AE_OK); } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evgpeutil.c b/drivers/acpi/acpica/evgpeutil.c index 25073932aa10..3c43796b8361 100644 --- a/drivers/acpi/acpica/evgpeutil.c +++ b/drivers/acpi/acpica/evgpeutil.c @@ -48,6 +48,7 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evgpeutil") +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /******************************************************************************* * * FUNCTION: acpi_ev_walk_gpe_list @@ -374,3 +375,5 @@ acpi_ev_delete_gpe_handlers(struct acpi_gpe_xrupt_info *gpe_xrupt_info, return_ACPI_STATUS(AE_OK); } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c index 84966f416463..0912f62f05a0 100644 --- a/drivers/acpi/acpica/evmisc.c +++ b/drivers/acpi/acpica/evmisc.c @@ -270,6 +270,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_notify_dispatch(void *context) acpi_ut_delete_generic_state(notify_info); } +#if (!ACPI_REDUCED_HARDWARE) /****************************************************************************** * * FUNCTION: acpi_ev_terminate @@ -338,3 +339,5 @@ void acpi_ev_terminate(void) } return_VOID; } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evsci.c b/drivers/acpi/acpica/evsci.c index 26065c612e76..6a57aa2d70d1 100644 --- a/drivers/acpi/acpica/evsci.c +++ b/drivers/acpi/acpica/evsci.c @@ -48,7 +48,7 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evsci") - +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /* Local prototypes */ static u32 ACPI_SYSTEM_XFACE acpi_ev_sci_xrupt_handler(void *context); @@ -181,3 +181,5 @@ acpi_status acpi_ev_remove_sci_handler(void) return_ACPI_STATUS(status); } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evxface.c b/drivers/acpi/acpica/evxface.c index 61944e89565a..44bef5744ebb 100644 --- a/drivers/acpi/acpica/evxface.c +++ b/drivers/acpi/acpica/evxface.c @@ -51,222 +51,6 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evxface") -/******************************************************************************* - * - * FUNCTION: acpi_install_exception_handler - * - * PARAMETERS: Handler - Pointer to the handler function for the - * event - * - * RETURN: Status - * - * DESCRIPTION: Saves the pointer to the handler function - * - ******************************************************************************/ -#ifdef ACPI_FUTURE_USAGE -acpi_status acpi_install_exception_handler(acpi_exception_handler handler) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(acpi_install_exception_handler); - - status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Don't allow two handlers. */ - - if (acpi_gbl_exception_handler) { - status = AE_ALREADY_EXISTS; - goto cleanup; - } - - /* Install the handler */ - - acpi_gbl_exception_handler = handler; - - cleanup: - (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); - return_ACPI_STATUS(status); -} - -ACPI_EXPORT_SYMBOL(acpi_install_exception_handler) -#endif /* ACPI_FUTURE_USAGE */ - -/******************************************************************************* - * - * FUNCTION: acpi_install_global_event_handler - * - * PARAMETERS: Handler - Pointer to the global event handler function - * Context - Value passed to the handler on each event - * - * RETURN: Status - * - * DESCRIPTION: Saves the pointer to the handler function. The global handler - * is invoked upon each incoming GPE and Fixed Event. It is - * invoked at interrupt level at the time of the event dispatch. - * Can be used to update event counters, etc. - * - ******************************************************************************/ -acpi_status -acpi_install_global_event_handler(ACPI_GBL_EVENT_HANDLER handler, void *context) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(acpi_install_global_event_handler); - - /* Parameter validation */ - - if (!handler) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Don't allow two handlers. */ - - if (acpi_gbl_global_event_handler) { - status = AE_ALREADY_EXISTS; - goto cleanup; - } - - acpi_gbl_global_event_handler = handler; - acpi_gbl_global_event_handler_context = context; - - cleanup: - (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); - return_ACPI_STATUS(status); -} - -ACPI_EXPORT_SYMBOL(acpi_install_global_event_handler) - -/******************************************************************************* - * - * FUNCTION: acpi_install_fixed_event_handler - * - * PARAMETERS: Event - Event type to enable. - * Handler - Pointer to the handler function for the - * event - * Context - Value passed to the handler on each GPE - * - * RETURN: Status - * - * DESCRIPTION: Saves the pointer to the handler function and then enables the - * event. - * - ******************************************************************************/ -acpi_status -acpi_install_fixed_event_handler(u32 event, - acpi_event_handler handler, void *context) -{ - acpi_status status; - - ACPI_FUNCTION_TRACE(acpi_install_fixed_event_handler); - - /* Parameter validation */ - - if (event > ACPI_EVENT_MAX) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Don't allow two handlers. */ - - if (NULL != acpi_gbl_fixed_event_handlers[event].handler) { - status = AE_ALREADY_EXISTS; - goto cleanup; - } - - /* Install the handler before enabling the event */ - - acpi_gbl_fixed_event_handlers[event].handler = handler; - acpi_gbl_fixed_event_handlers[event].context = context; - - status = acpi_clear_event(event); - if (ACPI_SUCCESS(status)) - status = acpi_enable_event(event, 0); - if (ACPI_FAILURE(status)) { - ACPI_WARNING((AE_INFO, "Could not enable fixed event 0x%X", - event)); - - /* Remove the handler */ - - acpi_gbl_fixed_event_handlers[event].handler = NULL; - acpi_gbl_fixed_event_handlers[event].context = NULL; - } else { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Enabled fixed event %X, Handler=%p\n", event, - handler)); - } - - cleanup: - (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); - return_ACPI_STATUS(status); -} - -ACPI_EXPORT_SYMBOL(acpi_install_fixed_event_handler) - -/******************************************************************************* - * - * FUNCTION: acpi_remove_fixed_event_handler - * - * PARAMETERS: Event - Event type to disable. - * Handler - Address of the handler - * - * RETURN: Status - * - * DESCRIPTION: Disables the event and unregisters the event handler. - * - ******************************************************************************/ -acpi_status -acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler) -{ - acpi_status status = AE_OK; - - ACPI_FUNCTION_TRACE(acpi_remove_fixed_event_handler); - - /* Parameter validation */ - - if (event > ACPI_EVENT_MAX) { - return_ACPI_STATUS(AE_BAD_PARAMETER); - } - - status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); - if (ACPI_FAILURE(status)) { - return_ACPI_STATUS(status); - } - - /* Disable the event before removing the handler */ - - status = acpi_disable_event(event, 0); - - /* Always Remove the handler */ - - acpi_gbl_fixed_event_handlers[event].handler = NULL; - acpi_gbl_fixed_event_handlers[event].context = NULL; - - if (ACPI_FAILURE(status)) { - ACPI_WARNING((AE_INFO, - "Could not write to fixed event enable register 0x%X", - event)); - } else { - ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Disabled fixed event %X\n", - event)); - } - - (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); - return_ACPI_STATUS(status); -} - -ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler) /******************************************************************************* * @@ -334,6 +118,7 @@ acpi_add_handler_object(struct acpi_object_notify_handler *parent_obj, return AE_OK; } + /******************************************************************************* * * FUNCTION: acpi_install_notify_handler @@ -703,6 +488,224 @@ acpi_remove_notify_handler(acpi_handle device, ACPI_EXPORT_SYMBOL(acpi_remove_notify_handler) +/******************************************************************************* + * + * FUNCTION: acpi_install_exception_handler + * + * PARAMETERS: Handler - Pointer to the handler function for the + * event + * + * RETURN: Status + * + * DESCRIPTION: Saves the pointer to the handler function + * + ******************************************************************************/ +#ifdef ACPI_FUTURE_USAGE +acpi_status acpi_install_exception_handler(acpi_exception_handler handler) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_install_exception_handler); + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Don't allow two handlers. */ + + if (acpi_gbl_exception_handler) { + status = AE_ALREADY_EXISTS; + goto cleanup; + } + + /* Install the handler */ + + acpi_gbl_exception_handler = handler; + + cleanup: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_install_exception_handler) +#endif /* ACPI_FUTURE_USAGE */ + +#if (!ACPI_REDUCED_HARDWARE) +/******************************************************************************* + * + * FUNCTION: acpi_install_global_event_handler + * + * PARAMETERS: Handler - Pointer to the global event handler function + * Context - Value passed to the handler on each event + * + * RETURN: Status + * + * DESCRIPTION: Saves the pointer to the handler function. The global handler + * is invoked upon each incoming GPE and Fixed Event. It is + * invoked at interrupt level at the time of the event dispatch. + * Can be used to update event counters, etc. + * + ******************************************************************************/ +acpi_status +acpi_install_global_event_handler(ACPI_GBL_EVENT_HANDLER handler, void *context) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_install_global_event_handler); + + /* Parameter validation */ + + if (!handler) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Don't allow two handlers. */ + + if (acpi_gbl_global_event_handler) { + status = AE_ALREADY_EXISTS; + goto cleanup; + } + + acpi_gbl_global_event_handler = handler; + acpi_gbl_global_event_handler_context = context; + + cleanup: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_install_global_event_handler) + +/******************************************************************************* + * + * FUNCTION: acpi_install_fixed_event_handler + * + * PARAMETERS: Event - Event type to enable. + * Handler - Pointer to the handler function for the + * event + * Context - Value passed to the handler on each GPE + * + * RETURN: Status + * + * DESCRIPTION: Saves the pointer to the handler function and then enables the + * event. + * + ******************************************************************************/ +acpi_status +acpi_install_fixed_event_handler(u32 event, + acpi_event_handler handler, void *context) +{ + acpi_status status; + + ACPI_FUNCTION_TRACE(acpi_install_fixed_event_handler); + + /* Parameter validation */ + + if (event > ACPI_EVENT_MAX) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Don't allow two handlers. */ + + if (NULL != acpi_gbl_fixed_event_handlers[event].handler) { + status = AE_ALREADY_EXISTS; + goto cleanup; + } + + /* Install the handler before enabling the event */ + + acpi_gbl_fixed_event_handlers[event].handler = handler; + acpi_gbl_fixed_event_handlers[event].context = context; + + status = acpi_clear_event(event); + if (ACPI_SUCCESS(status)) + status = acpi_enable_event(event, 0); + if (ACPI_FAILURE(status)) { + ACPI_WARNING((AE_INFO, "Could not enable fixed event 0x%X", + event)); + + /* Remove the handler */ + + acpi_gbl_fixed_event_handlers[event].handler = NULL; + acpi_gbl_fixed_event_handlers[event].context = NULL; + } else { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Enabled fixed event %X, Handler=%p\n", event, + handler)); + } + + cleanup: + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_install_fixed_event_handler) + +/******************************************************************************* + * + * FUNCTION: acpi_remove_fixed_event_handler + * + * PARAMETERS: Event - Event type to disable. + * Handler - Address of the handler + * + * RETURN: Status + * + * DESCRIPTION: Disables the event and unregisters the event handler. + * + ******************************************************************************/ +acpi_status +acpi_remove_fixed_event_handler(u32 event, acpi_event_handler handler) +{ + acpi_status status = AE_OK; + + ACPI_FUNCTION_TRACE(acpi_remove_fixed_event_handler); + + /* Parameter validation */ + + if (event > ACPI_EVENT_MAX) { + return_ACPI_STATUS(AE_BAD_PARAMETER); + } + + status = acpi_ut_acquire_mutex(ACPI_MTX_EVENTS); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); + } + + /* Disable the event before removing the handler */ + + status = acpi_disable_event(event, 0); + + /* Always Remove the handler */ + + acpi_gbl_fixed_event_handlers[event].handler = NULL; + acpi_gbl_fixed_event_handlers[event].context = NULL; + + if (ACPI_FAILURE(status)) { + ACPI_WARNING((AE_INFO, + "Could not write to fixed event enable register 0x%X", + event)); + } else { + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Disabled fixed event %X\n", + event)); + } + + (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + return_ACPI_STATUS(status); +} + +ACPI_EXPORT_SYMBOL(acpi_remove_fixed_event_handler) + /******************************************************************************* * * FUNCTION: acpi_install_gpe_handler @@ -984,3 +987,4 @@ acpi_status acpi_release_global_lock(u32 handle) } ACPI_EXPORT_SYMBOL(acpi_release_global_lock) +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c index 1768bbec1002..77cee5a5e891 100644 --- a/drivers/acpi/acpica/evxfevnt.c +++ b/drivers/acpi/acpica/evxfevnt.c @@ -49,6 +49,7 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evxfevnt") +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /******************************************************************************* * * FUNCTION: acpi_enable @@ -352,3 +353,4 @@ acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status) } ACPI_EXPORT_SYMBOL(acpi_get_event_status) +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c index 33388fd69df4..86f9b343ebd4 100644 --- a/drivers/acpi/acpica/evxfgpe.c +++ b/drivers/acpi/acpica/evxfgpe.c @@ -50,6 +50,7 @@ #define _COMPONENT ACPI_EVENTS ACPI_MODULE_NAME("evxfgpe") +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /****************************************************************************** * * FUNCTION: acpi_update_all_gpes @@ -695,3 +696,4 @@ acpi_get_gpe_device(u32 index, acpi_handle *gpe_device) } ACPI_EXPORT_SYMBOL(acpi_get_gpe_device) +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/hwacpi.c b/drivers/acpi/acpica/hwacpi.c index d21ec5f0b3a9..d0b9ed5df97e 100644 --- a/drivers/acpi/acpica/hwacpi.c +++ b/drivers/acpi/acpica/hwacpi.c @@ -48,6 +48,7 @@ #define _COMPONENT ACPI_HARDWARE ACPI_MODULE_NAME("hwacpi") +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /****************************************************************************** * * FUNCTION: acpi_hw_set_mode @@ -166,3 +167,5 @@ u32 acpi_hw_get_mode(void) return_UINT32(ACPI_SYS_MODE_LEGACY); } } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/hwgpe.c b/drivers/acpi/acpica/hwgpe.c index 1a6894afef79..25bd28c4ae8d 100644 --- a/drivers/acpi/acpica/hwgpe.c +++ b/drivers/acpi/acpica/hwgpe.c @@ -48,7 +48,7 @@ #define _COMPONENT ACPI_HARDWARE ACPI_MODULE_NAME("hwgpe") - +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /* Local prototypes */ static acpi_status acpi_hw_enable_wakeup_gpe_block(struct acpi_gpe_xrupt_info *gpe_xrupt_info, @@ -479,3 +479,5 @@ acpi_status acpi_hw_enable_all_wakeup_gpes(void) status = acpi_ev_walk_gpe_list(acpi_hw_enable_wakeup_gpe_block, NULL); return_ACPI_STATUS(status); } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c index 4ea4eeb51bfd..17a78e5ef175 100644 --- a/drivers/acpi/acpica/hwregs.c +++ b/drivers/acpi/acpica/hwregs.c @@ -51,6 +51,7 @@ #define _COMPONENT ACPI_HARDWARE ACPI_MODULE_NAME("hwregs") +#if (!ACPI_REDUCED_HARDWARE) /* Local Prototypes */ static acpi_status acpi_hw_read_multiple(u32 *value, @@ -62,6 +63,8 @@ acpi_hw_write_multiple(u32 value, struct acpi_generic_address *register_a, struct acpi_generic_address *register_b); +#endif /* !ACPI_REDUCED_HARDWARE */ + /****************************************************************************** * * FUNCTION: acpi_hw_validate_register @@ -240,6 +243,7 @@ acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg) return (status); } +#if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * * FUNCTION: acpi_hw_clear_acpi_status @@ -285,7 +289,7 @@ exit: /******************************************************************************* * - * FUNCTION: acpi_hw_get_register_bit_mask + * FUNCTION: acpi_hw_get_bit_register_info * * PARAMETERS: register_id - Index of ACPI Register to access * @@ -658,3 +662,5 @@ acpi_hw_write_multiple(u32 value, return (status); } + +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c index 59a2a6b897d4..fa341471c231 100644 --- a/drivers/acpi/acpica/hwsleep.c +++ b/drivers/acpi/acpica/hwsleep.c @@ -197,6 +197,7 @@ void acpi_hw_execute_SST(u32 indicator_id) } } +#if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * * FUNCTION: acpi_hw_legacy_sleep @@ -512,6 +513,7 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state) return_ACPI_STATUS(status); } +#endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* * diff --git a/drivers/acpi/acpica/hwtimer.c b/drivers/acpi/acpica/hwtimer.c index d4973d9da9f1..f1b2c3b94cac 100644 --- a/drivers/acpi/acpica/hwtimer.c +++ b/drivers/acpi/acpica/hwtimer.c @@ -49,6 +49,7 @@ #define _COMPONENT ACPI_HARDWARE ACPI_MODULE_NAME("hwtimer") +#if (!ACPI_REDUCED_HARDWARE) /* Entire module */ /****************************************************************************** * * FUNCTION: acpi_get_timer_resolution @@ -187,3 +188,4 @@ acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 * time_elapsed) } ACPI_EXPORT_SYMBOL(acpi_get_timer_duration) +#endif /* !ACPI_REDUCED_HARDWARE */ diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c index 9d38eb6c0d0b..bb8dba612212 100644 --- a/drivers/acpi/acpica/hwxface.c +++ b/drivers/acpi/acpica/hwxface.c @@ -286,6 +286,7 @@ acpi_status acpi_write(u64 value, struct acpi_generic_address *reg) ACPI_EXPORT_SYMBOL(acpi_write) +#if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * * FUNCTION: acpi_read_bit_register @@ -453,7 +454,7 @@ unlock_and_exit: } ACPI_EXPORT_SYMBOL(acpi_write_bit_register) - +#endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* * * FUNCTION: acpi_get_sleep_type_data diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c index 29c0fd3810b0..d599961e93c8 100644 --- a/drivers/acpi/acpica/hwxfsleep.c +++ b/drivers/acpi/acpica/hwxfsleep.c @@ -48,6 +48,7 @@ #define _COMPONENT ACPI_HARDWARE ACPI_MODULE_NAME("hwxfsleep") +#if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * * FUNCTION: acpi_set_firmware_waking_vector @@ -189,7 +190,7 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void) } ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios) - +#endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* * * FUNCTION: acpi_enter_sleep_state_prep @@ -290,6 +291,7 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b)); return_ACPI_STATUS(AE_AML_OPERAND_VALUE); } +#if (!ACPI_REDUCED_HARDWARE) /* If Hardware Reduced flag is set, must use the extended sleep registers */ @@ -301,6 +303,11 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) status = acpi_hw_legacy_sleep(sleep_state); } +#else + status = acpi_hw_extended_sleep(sleep_state); + +#endif /* !ACPI_REDUCED_HARDWARE */ + return_ACPI_STATUS(status); } @@ -326,6 +333,8 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) ACPI_FUNCTION_TRACE(acpi_leave_sleep_state); +#if (!ACPI_REDUCED_HARDWARE) + /* If Hardware Reduced flag is set, must use the extended sleep registers */ if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { @@ -335,6 +344,10 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) status = acpi_hw_legacy_wake_prep(sleep_state); } +#else + status = acpi_hw_extended_wake_prep(sleep_state); + +#endif /* !ACPI_REDUCED_HARDWARE */ return_ACPI_STATUS(status); @@ -361,6 +374,8 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state) ACPI_FUNCTION_TRACE(acpi_leave_sleep_state); +#if (!ACPI_REDUCED_HARDWARE) + /* If Hardware Reduced flag is set, must use the extended sleep registers */ if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { @@ -371,6 +386,11 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state) status = acpi_hw_legacy_wake(sleep_state); } +#else + status = acpi_hw_extended_wake(sleep_state); + +#endif /* !ACPI_REDUCED_HARDWARE */ + return_ACPI_STATUS(status); } diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c index 09ca39e14337..1347c084fc2b 100644 --- a/drivers/acpi/acpica/tbutils.c +++ b/drivers/acpi/acpica/tbutils.c @@ -118,6 +118,7 @@ acpi_tb_check_xsdt(acpi_physical_address address) return AE_OK; } +#if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * * FUNCTION: acpi_tb_initialize_facs @@ -148,6 +149,7 @@ acpi_status acpi_tb_initialize_facs(void) &acpi_gbl_FACS)); return status; } +#endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* * diff --git a/drivers/acpi/acpica/utglobal.c b/drivers/acpi/acpica/utglobal.c index 4153584cf526..90f53b42eca9 100644 --- a/drivers/acpi/acpica/utglobal.c +++ b/drivers/acpi/acpica/utglobal.c @@ -140,6 +140,7 @@ const struct acpi_predefined_names acpi_gbl_pre_defined_names[] = { {NULL, ACPI_TYPE_ANY, NULL} }; +#if (!ACPI_REDUCED_HARDWARE) /****************************************************************************** * * Event and Hardware globals @@ -236,6 +237,7 @@ struct acpi_fixed_event_info acpi_gbl_fixed_event_info[ACPI_NUM_FIXED_EVENTS] = ACPI_BITMASK_RT_CLOCK_STATUS, ACPI_BITMASK_RT_CLOCK_ENABLE}, }; +#endif /* !ACPI_REDUCED_HARDWARE */ /******************************************************************************* * @@ -286,6 +288,8 @@ acpi_status acpi_ut_init_globals(void) acpi_gbl_owner_id_mask[ACPI_NUM_OWNERID_MASKS - 1] = 0x80000000; +#if (!ACPI_REDUCED_HARDWARE) + /* GPE support */ acpi_gbl_gpe_xrupt_list_head = NULL; @@ -294,6 +298,10 @@ acpi_status acpi_ut_init_globals(void) acpi_current_gpe_count = 0; acpi_gbl_all_gpes_initialized = FALSE; + acpi_gbl_global_event_handler = NULL; + +#endif /* !ACPI_REDUCED_HARDWARE */ + /* Global handlers */ acpi_gbl_system_notify.handler = NULL; @@ -302,7 +310,6 @@ acpi_status acpi_ut_init_globals(void) acpi_gbl_init_handler = NULL; acpi_gbl_table_handler = NULL; acpi_gbl_interface_handler = NULL; - acpi_gbl_global_event_handler = NULL; /* Global Lock support */ diff --git a/drivers/acpi/acpica/utinit.c b/drivers/acpi/acpica/utinit.c index 8359c0c5dc98..246798e4c938 100644 --- a/drivers/acpi/acpica/utinit.c +++ b/drivers/acpi/acpica/utinit.c @@ -53,27 +53,35 @@ ACPI_MODULE_NAME("utinit") /* Local prototypes */ static void acpi_ut_terminate(void); +#if (!ACPI_REDUCED_HARDWARE) + +static void acpi_ut_free_gpe_lists(void); + +#else + +#define acpi_ut_free_gpe_lists() +#endif /* !ACPI_REDUCED_HARDWARE */ + +#if (!ACPI_REDUCED_HARDWARE) /****************************************************************************** * - * FUNCTION: acpi_ut_terminate + * FUNCTION: acpi_ut_free_gpe_lists * * PARAMETERS: none * * RETURN: none * - * DESCRIPTION: Free global memory + * DESCRIPTION: Free global GPE lists * ******************************************************************************/ -static void acpi_ut_terminate(void) +static void acpi_ut_free_gpe_lists(void) { struct acpi_gpe_block_info *gpe_block; struct acpi_gpe_block_info *next_gpe_block; struct acpi_gpe_xrupt_info *gpe_xrupt_info; struct acpi_gpe_xrupt_info *next_gpe_xrupt_info; - ACPI_FUNCTION_TRACE(ut_terminate); - /* Free global GPE blocks and related info structures */ gpe_xrupt_info = acpi_gbl_gpe_xrupt_list_head; @@ -91,7 +99,26 @@ static void acpi_ut_terminate(void) ACPI_FREE(gpe_xrupt_info); gpe_xrupt_info = next_gpe_xrupt_info; } +} +#endif /* !ACPI_REDUCED_HARDWARE */ + +/****************************************************************************** + * + * FUNCTION: acpi_ut_terminate + * + * PARAMETERS: none + * + * RETURN: none + * + * DESCRIPTION: Free global memory + * + ******************************************************************************/ + +static void acpi_ut_terminate(void) +{ + ACPI_FUNCTION_TRACE(ut_terminate); + acpi_ut_free_gpe_lists(); acpi_ut_delete_address_lists(); return_VOID; } diff --git a/drivers/acpi/acpica/utxface.c b/drivers/acpi/acpica/utxface.c index 644e8c8ebc4b..afa94f51ff0b 100644 --- a/drivers/acpi/acpica/utxface.c +++ b/drivers/acpi/acpica/utxface.c @@ -145,6 +145,8 @@ acpi_status acpi_enable_subsystem(u32 flags) ACPI_FUNCTION_TRACE(acpi_enable_subsystem); +#if (!ACPI_REDUCED_HARDWARE) + /* Enable ACPI mode */ if (!(flags & ACPI_NO_ACPI_ENABLE)) { @@ -169,6 +171,7 @@ acpi_status acpi_enable_subsystem(u32 flags) ACPI_WARNING((AE_INFO, "Could not map the FACS table")); return_ACPI_STATUS(status); } +#endif /* !ACPI_REDUCED_HARDWARE */ /* * Install the default op_region handlers. These are installed unless @@ -184,7 +187,7 @@ acpi_status acpi_enable_subsystem(u32 flags) return_ACPI_STATUS(status); } } - +#if (!ACPI_REDUCED_HARDWARE) /* * Initialize ACPI Event handling (Fixed and General Purpose) * @@ -220,6 +223,7 @@ acpi_status acpi_enable_subsystem(u32 flags) return_ACPI_STATUS(status); } } +#endif /* !ACPI_REDUCED_HARDWARE */ return_ACPI_STATUS(status); } diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h new file mode 100644 index 000000000000..03f14856bd09 --- /dev/null +++ b/include/acpi/acconfig.h @@ -0,0 +1,248 @@ +/****************************************************************************** + * + * Name: acconfig.h - Global configuration constants + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2012, Intel Corp. + * 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, + * without modification. + * 2. Redistributions in binary form must reproduce at minimum a disclaimer + * substantially similar to the "NO WARRANTY" disclaimer below + * ("Disclaimer") and any redistribution must be conditioned upon + * including a substantially similar Disclaimer requirement for further + * binary redistribution. + * 3. Neither the names of the above-listed copyright holders nor the names + * of any contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * Alternatively, this software may be distributed under the terms of the + * GNU General Public License ("GPL") version 2 as published by the Free + * Software Foundation. + * + * NO WARRANTY + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * HOLDERS OR CONTRIBUTORS BE LIABLE FOR 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 DAMAGES. + */ + +#ifndef _ACCONFIG_H +#define _ACCONFIG_H + +/****************************************************************************** + * + * Configuration options + * + *****************************************************************************/ + +/* + * ACPI_DEBUG_OUTPUT - This switch enables all the debug facilities of the + * ACPI subsystem. This includes the DEBUG_PRINT output + * statements. When disabled, all DEBUG_PRINT + * statements are compiled out. + * + * ACPI_APPLICATION - Use this switch if the subsystem is going to be run + * at the application level. + * + */ + +/* + * OS name, used for the _OS object. The _OS object is essentially obsolete, + * but there is a large base of ASL/AML code in existing machines that check + * for the string below. The use of this string usually guarantees that + * the ASL will execute down the most tested code path. Also, there is some + * code that will not execute the _OSI method unless _OS matches the string + * below. Therefore, change this string at your own risk. + */ +#define ACPI_OS_NAME "Microsoft Windows NT" + +/* Maximum objects in the various object caches */ + +#define ACPI_MAX_STATE_CACHE_DEPTH 96 /* State objects */ +#define ACPI_MAX_PARSE_CACHE_DEPTH 96 /* Parse tree objects */ +#define ACPI_MAX_EXTPARSE_CACHE_DEPTH 96 /* Parse tree objects */ +#define ACPI_MAX_OBJECT_CACHE_DEPTH 96 /* Interpreter operand objects */ +#define ACPI_MAX_NAMESPACE_CACHE_DEPTH 96 /* Namespace objects */ + +/* + * Should the subsystem abort the loading of an ACPI table if the + * table checksum is incorrect? + */ +#define ACPI_CHECKSUM_ABORT FALSE + +/* + * Generate a version of ACPICA that only supports "reduced hardware" + * platforms (as defined in ACPI 5.0). Set to TRUE to generate a specialized + * version of ACPICA that ONLY supports the ACPI 5.0 "reduced hardware" + * model. In other words, no ACPI hardware is supported. + * + * If TRUE, this means no support for the following: + * PM Event and Control registers + * SCI interrupt (and handler) + * Fixed Events + * General Purpose Events (GPEs) + * Global Lock + * ACPI PM timer + * FACS table (Waking vectors and Global Lock) + */ +#define ACPI_REDUCED_HARDWARE FALSE + +/****************************************************************************** + * + * Subsystem Constants + * + *****************************************************************************/ + +/* Version of ACPI supported */ + +#define ACPI_CA_SUPPORT_LEVEL 5 + +/* Maximum count for a semaphore object */ + +#define ACPI_MAX_SEMAPHORE_COUNT 256 + +/* Maximum object reference count (detects object deletion issues) */ + +#define ACPI_MAX_REFERENCE_COUNT 0x1000 + +/* Default page size for use in mapping memory for operation regions */ + +#define ACPI_DEFAULT_PAGE_SIZE 4096 /* Must be power of 2 */ + +/* owner_id tracking. 8 entries allows for 255 owner_ids */ + +#define ACPI_NUM_OWNERID_MASKS 8 + +/* Size of the root table array is increased by this increment */ + +#define ACPI_ROOT_TABLE_SIZE_INCREMENT 4 + +/* Maximum number of While() loop iterations before forced abort */ + +#define ACPI_MAX_LOOP_ITERATIONS 0xFFFF + +/* Maximum sleep allowed via Sleep() operator */ + +#define ACPI_MAX_SLEEP 2000 /* Two seconds */ + +/* Address Range lists are per-space_id (Memory and I/O only) */ + +#define ACPI_ADDRESS_RANGE_MAX 2 + +/****************************************************************************** + * + * ACPI Specification constants (Do not change unless the specification changes) + * + *****************************************************************************/ + +/* Number of distinct GPE register blocks and register width */ + +#define ACPI_MAX_GPE_BLOCKS 2 +#define ACPI_GPE_REGISTER_WIDTH 8 + +/* Method info (in WALK_STATE), containing local variables and argumetns */ + +#define ACPI_METHOD_NUM_LOCALS 8 +#define ACPI_METHOD_MAX_LOCAL 7 + +#define ACPI_METHOD_NUM_ARGS 7 +#define ACPI_METHOD_MAX_ARG 6 + +/* Length of _HID, _UID, _CID, and UUID values */ + +#define ACPI_DEVICE_ID_LENGTH 0x09 +#define ACPI_MAX_CID_LENGTH 48 +#define ACPI_UUID_LENGTH 16 + +/* + * Operand Stack (in WALK_STATE), Must be large enough to contain METHOD_MAX_ARG + */ +#define ACPI_OBJ_NUM_OPERANDS 8 +#define ACPI_OBJ_MAX_OPERAND 7 + +/* Number of elements in the Result Stack frame, can be an arbitrary value */ + +#define ACPI_RESULTS_FRAME_OBJ_NUM 8 + +/* + * Maximal number of elements the Result Stack can contain, + * it may be an arbitray value not exceeding the types of + * result_size and result_count (now u8). + */ +#define ACPI_RESULTS_OBJ_NUM_MAX 255 + +/* Names within the namespace are 4 bytes long */ + +#define ACPI_NAME_SIZE 4 +#define ACPI_PATH_SEGMENT_LENGTH 5 /* 4 chars for name + 1 char for separator */ +#define ACPI_PATH_SEPARATOR '.' + +/* Sizes for ACPI table headers */ + +#define ACPI_OEM_ID_SIZE 6 +#define ACPI_OEM_TABLE_ID_SIZE 8 + +/* Constants used in searching for the RSDP in low memory */ + +#define ACPI_EBDA_PTR_LOCATION 0x0000040E /* Physical Address */ +#define ACPI_EBDA_PTR_LENGTH 2 +#define ACPI_EBDA_WINDOW_SIZE 1024 +#define ACPI_HI_RSDP_WINDOW_BASE 0x000E0000 /* Physical Address */ +#define ACPI_HI_RSDP_WINDOW_SIZE 0x00020000 +#define ACPI_RSDP_SCAN_STEP 16 + +/* Operation regions */ + +#define ACPI_USER_REGION_BEGIN 0x80 + +/* Maximum space_ids for Operation Regions */ + +#define ACPI_MAX_ADDRESS_SPACE 255 + +/* Array sizes. Used for range checking also */ + +#define ACPI_MAX_MATCH_OPCODE 5 + +/* RSDP checksums */ + +#define ACPI_RSDP_CHECKSUM_LENGTH 20 +#define ACPI_RSDP_XCHECKSUM_LENGTH 36 + +/* SMBus, GSBus and IPMI bidirectional buffer size */ + +#define ACPI_SMBUS_BUFFER_SIZE 34 +#define ACPI_GSBUS_BUFFER_SIZE 34 +#define ACPI_IPMI_BUFFER_SIZE 66 + +/* _sx_d and _sx_w control methods */ + +#define ACPI_NUM_sx_d_METHODS 4 +#define ACPI_NUM_sx_w_METHODS 5 + +/****************************************************************************** + * + * ACPI AML Debugger + * + *****************************************************************************/ + +#define ACPI_DEBUGGER_MAX_ARGS 8 /* Must be max method args + 1 */ + +#define ACPI_DEBUGGER_COMMAND_PROMPT '-' +#define ACPI_DEBUGGER_EXECUTE_PROMPT '%' + +#endif /* _ACCONFIG_H */ diff --git a/include/acpi/acexcep.h b/include/acpi/acexcep.h index 5b6c391efc8e..47b3902957b0 100644 --- a/include/acpi/acexcep.h +++ b/include/acpi/acexcep.h @@ -89,8 +89,9 @@ #define AE_SAME_HANDLER (acpi_status) (0x0019 | AE_CODE_ENVIRONMENTAL) #define AE_NO_HANDLER (acpi_status) (0x001A | AE_CODE_ENVIRONMENTAL) #define AE_OWNER_ID_LIMIT (acpi_status) (0x001B | AE_CODE_ENVIRONMENTAL) +#define AE_NOT_CONFIGURED (acpi_status) (0x001C | AE_CODE_ENVIRONMENTAL) -#define AE_CODE_ENV_MAX 0x001B +#define AE_CODE_ENV_MAX 0x001C /* * Programmer exceptions @@ -213,7 +214,8 @@ char const *acpi_gbl_exception_names_env[] = { "AE_ABORT_METHOD", "AE_SAME_HANDLER", "AE_NO_HANDLER", - "AE_OWNER_ID_LIMIT" + "AE_OWNER_ID_LIMIT", + "AE_NOT_CONFIGURED" }; char const *acpi_gbl_exception_names_pgm[] = { diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 67cd51c8ee0a..e8600dd92573 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -49,6 +49,7 @@ #define ACPI_CA_VERSION 0x20120111 +#include "acconfig.h" #include "actypes.h" #include "actbl.h" @@ -71,6 +72,33 @@ extern u8 acpi_gbl_copy_dsdt_locally; extern u8 acpi_gbl_truncate_io_addresses; extern u8 acpi_gbl_disable_auto_repair; +/* + * Hardware-reduced prototypes. All interfaces that use these macros will + * be configured out of the ACPICA build if the ACPI_REDUCED_HARDWARE flag + * is set to TRUE. + */ +#if (!ACPI_REDUCED_HARDWARE) +#define ACPI_HW_DEPENDENT_RETURN_STATUS(prototype) \ + prototype; + +#define ACPI_HW_DEPENDENT_RETURN_OK(prototype) \ + prototype; + +#define ACPI_HW_DEPENDENT_RETURN_VOID(prototype) \ + prototype; + +#else +#define ACPI_HW_DEPENDENT_RETURN_STATUS(prototype) \ + static ACPI_INLINE prototype {return(AE_NOT_CONFIGURED);} + +#define ACPI_HW_DEPENDENT_RETURN_OK(prototype) \ + static ACPI_INLINE prototype {return(AE_OK);} + +#define ACPI_HW_DEPENDENT_RETURN_VOID(prototype) \ + static ACPI_INLINE prototype {} + +#endif /* !ACPI_REDUCED_HARDWARE */ + extern u32 acpi_current_gpe_count; extern struct acpi_table_fadt acpi_gbl_FADT; extern u8 acpi_gbl_system_awake_and_running; @@ -96,9 +124,8 @@ acpi_status acpi_terminate(void); acpi_status acpi_subsystem_status(void); #endif -acpi_status acpi_enable(void); - -acpi_status acpi_disable(void); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable(void)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable(void)) #ifdef ACPI_FUTURE_USAGE acpi_status acpi_get_system_info(struct acpi_buffer *ret_buffer); @@ -235,17 +262,34 @@ acpi_status acpi_get_parent(acpi_handle object, acpi_handle * out_handle); acpi_status acpi_install_initialization_handler(acpi_init_handler handler, u32 function); -acpi_status -acpi_install_global_event_handler(ACPI_GBL_EVENT_HANDLER handler, - void *context); - -acpi_status -acpi_install_fixed_event_handler(u32 acpi_event, - acpi_event_handler handler, void *context); - -acpi_status -acpi_remove_fixed_event_handler(u32 acpi_event, acpi_event_handler handler); - +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_install_global_event_handler + (ACPI_GBL_EVENT_HANDLER handler, void *context)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_install_fixed_event_handler(u32 + acpi_event, + acpi_event_handler + handler, + void + *context)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_remove_fixed_event_handler(u32 acpi_event, + acpi_event_handler + handler)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_install_gpe_handler(acpi_handle + gpe_device, + u32 gpe_number, + u32 type, + acpi_gpe_handler + address, + void *context)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_remove_gpe_handler(acpi_handle gpe_device, + u32 gpe_number, + acpi_gpe_handler + address)) acpi_status acpi_install_notify_handler(acpi_handle device, u32 handler_type, @@ -266,15 +310,6 @@ acpi_remove_address_space_handler(acpi_handle device, acpi_adr_space_type space_id, acpi_adr_space_handler handler); -acpi_status -acpi_install_gpe_handler(acpi_handle gpe_device, - u32 gpe_number, - u32 type, acpi_gpe_handler address, void *context); - -acpi_status -acpi_remove_gpe_handler(acpi_handle gpe_device, - u32 gpe_number, acpi_gpe_handler address); - #ifdef ACPI_FUTURE_USAGE acpi_status acpi_install_exception_handler(acpi_exception_handler handler); #endif @@ -284,9 +319,11 @@ acpi_status acpi_install_interface_handler(acpi_interface_handler handler); /* * Global Lock interfaces */ -acpi_status acpi_acquire_global_lock(u16 timeout, u32 * handle); - -acpi_status acpi_release_global_lock(u32 handle); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_acquire_global_lock(u16 timeout, + u32 *handle)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_release_global_lock(u32 handle)) /* * Interfaces to AML mutex objects @@ -299,47 +336,75 @@ acpi_status acpi_release_mutex(acpi_handle handle, acpi_string pathname); /* * Fixed Event interfaces */ -acpi_status acpi_enable_event(u32 event, u32 flags); - -acpi_status acpi_disable_event(u32 event, u32 flags); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_enable_event(u32 event, u32 flags)) -acpi_status acpi_clear_event(u32 event); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_disable_event(u32 event, u32 flags)) -acpi_status acpi_get_event_status(u32 event, acpi_event_status * event_status); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_clear_event(u32 event)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_get_event_status(u32 event, + acpi_event_status + *event_status)) /* * General Purpose Event (GPE) Interfaces */ -acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number); - -acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number); - -acpi_status acpi_clear_gpe(acpi_handle gpe_device, u32 gpe_number); - -acpi_status -acpi_setup_gpe_for_wake(acpi_handle parent_device, - acpi_handle gpe_device, u32 gpe_number); - -acpi_status acpi_set_gpe_wake_mask(acpi_handle gpe_device, u32 gpe_number, u8 action); - -acpi_status -acpi_get_gpe_status(acpi_handle gpe_device, - u32 gpe_number, acpi_event_status *event_status); - -acpi_status acpi_disable_all_gpes(void); - -acpi_status acpi_enable_all_runtime_gpes(void); - -acpi_status acpi_get_gpe_device(u32 gpe_index, acpi_handle *gpe_device); - -acpi_status -acpi_install_gpe_block(acpi_handle gpe_device, - struct acpi_generic_address *gpe_block_address, - u32 register_count, u32 interrupt_number); - -acpi_status acpi_remove_gpe_block(acpi_handle gpe_device); - -acpi_status acpi_update_all_gpes(void); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_update_all_gpes(void)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_enable_gpe(acpi_handle gpe_device, + u32 gpe_number)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_disable_gpe(acpi_handle gpe_device, + u32 gpe_number)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_clear_gpe(acpi_handle gpe_device, + u32 gpe_number)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_set_gpe(acpi_handle gpe_device, + u32 gpe_number, u8 action)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_finish_gpe(acpi_handle gpe_device, + u32 gpe_number)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_setup_gpe_for_wake(acpi_handle + parent_device, + acpi_handle gpe_device, + u32 gpe_number)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_set_gpe_wake_mask(acpi_handle gpe_device, + u32 gpe_number, + u8 action)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_get_gpe_status(acpi_handle gpe_device, + u32 gpe_number, + acpi_event_status + *event_status)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable_all_gpes(void)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_runtime_gpes(void)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_get_gpe_device(u32 gpe_index, + acpi_handle * gpe_device)) + +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_install_gpe_block(acpi_handle gpe_device, + struct + acpi_generic_address + *gpe_block_address, + u32 register_count, + u32 interrupt_number)) +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_remove_gpe_block(acpi_handle gpe_device)) /* * Resource interfaces @@ -391,20 +456,31 @@ acpi_buffer_to_resource(u8 *aml_buffer, */ acpi_status acpi_reset(void); -acpi_status acpi_read_bit_register(u32 register_id, u32 *return_value); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_read_bit_register(u32 register_id, + u32 *return_value)) -acpi_status acpi_write_bit_register(u32 register_id, u32 value); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_write_bit_register(u32 register_id, + u32 value)) -acpi_status acpi_set_firmware_waking_vector(u32 physical_address); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_set_firmware_waking_vector(u32 + physical_address)) #if ACPI_MACHINE_WIDTH == 64 -acpi_status acpi_set_firmware_waking_vector64(u64 physical_address); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_set_firmware_waking_vector64(u64 + physical_address)) #endif acpi_status acpi_read(u64 *value, struct acpi_generic_address *reg); acpi_status acpi_write(u64 value, struct acpi_generic_address *reg); +/* + * Sleep/Wake interfaces + */ acpi_status acpi_get_sleep_type_data(u8 sleep_state, u8 * slp_typ_a, u8 * slp_typ_b); @@ -412,7 +488,7 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state); acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state); -acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)) acpi_status acpi_leave_sleep_state_prep(u8 sleep_state); @@ -422,12 +498,15 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state); * ACPI Timer interfaces */ #ifdef ACPI_FUTURE_USAGE -acpi_status acpi_get_timer_resolution(u32 *resolution); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_get_timer_resolution(u32 *resolution)) -acpi_status acpi_get_timer(u32 *ticks); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_get_timer(u32 *ticks)) -acpi_status -acpi_get_timer_duration(u32 start_ticks, u32 end_ticks, u32 *time_elapsed); +ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status + acpi_get_timer_duration(u32 start_ticks, + u32 end_ticks, + u32 *time_elapsed)) #endif /* ACPI_FUTURE_USAGE */ /* -- cgit v1.2.3 From 653f4b538f66d37db560e0f56af08117136d29b7 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Tue, 14 Feb 2012 18:29:55 +0800 Subject: ACPICA: Expand OSL memory read/write interfaces to 64 bits This change expands acpi_os_read_memory and acpi_os_write_memory to a full 64 bits. This allows 64 bit transfers via the acpi_read and acpi_write interfaces. Note: The internal acpi_hw_read and acpi_hw_write interfaces remain at 32 bits, because 64 bits is not needed to access the standard ACPI registers. Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/hwregs.c | 8 +++- drivers/acpi/acpica/hwxface.c | 44 ++++++---------------- drivers/acpi/apei/apei-base.c | 4 +- drivers/acpi/osl.c | 86 +------------------------------------------ include/acpi/acpiosxf.h | 8 +--- 5 files changed, 23 insertions(+), 127 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/hwregs.c b/drivers/acpi/acpica/hwregs.c index 17a78e5ef175..6b6c83b87b52 100644 --- a/drivers/acpi/acpica/hwregs.c +++ b/drivers/acpi/acpica/hwregs.c @@ -157,6 +157,7 @@ acpi_hw_validate_register(struct acpi_generic_address *reg, acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg) { u64 address; + u64 value64; acpi_status status; ACPI_FUNCTION_NAME(hw_read); @@ -178,7 +179,9 @@ acpi_status acpi_hw_read(u32 *value, struct acpi_generic_address *reg) */ if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { status = acpi_os_read_memory((acpi_physical_address) - address, value, reg->bit_width); + address, &value64, reg->bit_width); + + *value = (u32)value64; } else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ status = acpi_hw_read_port((acpi_io_address) @@ -228,7 +231,8 @@ acpi_status acpi_hw_write(u32 value, struct acpi_generic_address *reg) */ if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { status = acpi_os_write_memory((acpi_physical_address) - address, value, reg->bit_width); + address, (u64)value, + reg->bit_width); } else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ status = acpi_hw_write_port((acpi_io_address) diff --git a/drivers/acpi/acpica/hwxface.c b/drivers/acpi/acpica/hwxface.c index bb8dba612212..a716fede4f25 100644 --- a/drivers/acpi/acpica/hwxface.c +++ b/drivers/acpi/acpica/hwxface.c @@ -138,11 +138,6 @@ acpi_status acpi_read(u64 *return_value, struct acpi_generic_address *reg) return (status); } - width = reg->bit_width; - if (width == 64) { - width = 32; /* Break into two 32-bit transfers */ - } - /* Initialize entire 64-bit return value to zero */ *return_value = 0; @@ -154,24 +149,17 @@ acpi_status acpi_read(u64 *return_value, struct acpi_generic_address *reg) */ if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { status = acpi_os_read_memory((acpi_physical_address) - address, &value, width); + address, return_value, + reg->bit_width); if (ACPI_FAILURE(status)) { return (status); } - *return_value = value; - - if (reg->bit_width == 64) { - - /* Read the top 32 bits */ + } else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ - status = acpi_os_read_memory((acpi_physical_address) - (address + 4), &value, 32); - if (ACPI_FAILURE(status)) { - return (status); - } - *return_value |= ((u64)value << 32); + width = reg->bit_width; + if (width == 64) { + width = 32; /* Break into two 32-bit transfers */ } - } else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ status = acpi_hw_read_port((acpi_io_address) address, &value, width); @@ -231,32 +219,22 @@ acpi_status acpi_write(u64 value, struct acpi_generic_address *reg) return (status); } - width = reg->bit_width; - if (width == 64) { - width = 32; /* Break into two 32-bit transfers */ - } - /* * Two address spaces supported: Memory or IO. PCI_Config is * not supported here because the GAS structure is insufficient */ if (reg->space_id == ACPI_ADR_SPACE_SYSTEM_MEMORY) { status = acpi_os_write_memory((acpi_physical_address) - address, ACPI_LODWORD(value), - width); + address, value, reg->bit_width); if (ACPI_FAILURE(status)) { return (status); } + } else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ - if (reg->bit_width == 64) { - status = acpi_os_write_memory((acpi_physical_address) - (address + 4), - ACPI_HIDWORD(value), 32); - if (ACPI_FAILURE(status)) { - return (status); - } + width = reg->bit_width; + if (width == 64) { + width = 32; /* Break into two 32-bit transfers */ } - } else { /* ACPI_ADR_SPACE_SYSTEM_IO, validated earlier */ status = acpi_hw_write_port((acpi_io_address) address, ACPI_LODWORD(value), diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c index e5d53b7ddc7e..ca773683d87e 100644 --- a/drivers/acpi/apei/apei-base.c +++ b/drivers/acpi/apei/apei-base.c @@ -605,7 +605,7 @@ int apei_read(u64 *val, struct acpi_generic_address *reg) *val = 0; switch(reg->space_id) { case ACPI_ADR_SPACE_SYSTEM_MEMORY: - status = acpi_os_read_memory64((acpi_physical_address) + status = acpi_os_read_memory((acpi_physical_address) address, val, reg->bit_width); if (ACPI_FAILURE(status)) return -EIO; @@ -636,7 +636,7 @@ int apei_write(u64 val, struct acpi_generic_address *reg) switch (reg->space_id) { case ACPI_ADR_SPACE_SYSTEM_MEMORY: - status = acpi_os_write_memory64((acpi_physical_address) + status = acpi_os_write_memory((acpi_physical_address) address, val, reg->bit_width); if (ACPI_FAILURE(status)) return -EIO; diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 412a1e04a922..1dea025e4e98 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -699,49 +699,6 @@ acpi_status acpi_os_write_port(acpi_io_address port, u32 value, u32 width) EXPORT_SYMBOL(acpi_os_write_port); -acpi_status -acpi_os_read_memory(acpi_physical_address phys_addr, u32 * value, u32 width) -{ - void __iomem *virt_addr; - unsigned int size = width / 8; - bool unmap = false; - u32 dummy; - - rcu_read_lock(); - virt_addr = acpi_map_vaddr_lookup(phys_addr, size); - if (!virt_addr) { - rcu_read_unlock(); - virt_addr = acpi_os_ioremap(phys_addr, size); - if (!virt_addr) - return AE_BAD_ADDRESS; - unmap = true; - } - - if (!value) - value = &dummy; - - switch (width) { - case 8: - *(u8 *) value = readb(virt_addr); - break; - case 16: - *(u16 *) value = readw(virt_addr); - break; - case 32: - *(u32 *) value = readl(virt_addr); - break; - default: - BUG(); - } - - if (unmap) - iounmap(virt_addr); - else - rcu_read_unlock(); - - return AE_OK; -} - #ifdef readq static inline u64 read64(const volatile void __iomem *addr) { @@ -758,7 +715,7 @@ static inline u64 read64(const volatile void __iomem *addr) #endif acpi_status -acpi_os_read_memory64(acpi_physical_address phys_addr, u64 *value, u32 width) +acpi_os_read_memory(acpi_physical_address phys_addr, u64 *value, u32 width) { void __iomem *virt_addr; unsigned int size = width / 8; @@ -803,45 +760,6 @@ acpi_os_read_memory64(acpi_physical_address phys_addr, u64 *value, u32 width) return AE_OK; } -acpi_status -acpi_os_write_memory(acpi_physical_address phys_addr, u32 value, u32 width) -{ - void __iomem *virt_addr; - unsigned int size = width / 8; - bool unmap = false; - - rcu_read_lock(); - virt_addr = acpi_map_vaddr_lookup(phys_addr, size); - if (!virt_addr) { - rcu_read_unlock(); - virt_addr = acpi_os_ioremap(phys_addr, size); - if (!virt_addr) - return AE_BAD_ADDRESS; - unmap = true; - } - - switch (width) { - case 8: - writeb(value, virt_addr); - break; - case 16: - writew(value, virt_addr); - break; - case 32: - writel(value, virt_addr); - break; - default: - BUG(); - } - - if (unmap) - iounmap(virt_addr); - else - rcu_read_unlock(); - - return AE_OK; -} - #ifdef writeq static inline void write64(u64 val, volatile void __iomem *addr) { @@ -856,7 +774,7 @@ static inline void write64(u64 val, volatile void __iomem *addr) #endif acpi_status -acpi_os_write_memory64(acpi_physical_address phys_addr, u64 value, u32 width) +acpi_os_write_memory(acpi_physical_address phys_addr, u64 value, u32 width) { void __iomem *virt_addr; unsigned int size = width / 8; diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h index 7c9aebe8a7aa..1cd22045fbd4 100644 --- a/include/acpi/acpiosxf.h +++ b/include/acpi/acpiosxf.h @@ -217,14 +217,10 @@ acpi_status acpi_os_write_port(acpi_io_address address, u32 value, u32 width); * Platform and hardware-independent physical memory interfaces */ acpi_status -acpi_os_read_memory(acpi_physical_address address, u32 * value, u32 width); -acpi_status -acpi_os_read_memory64(acpi_physical_address address, u64 *value, u32 width); +acpi_os_read_memory(acpi_physical_address address, u64 *value, u32 width); acpi_status -acpi_os_write_memory(acpi_physical_address address, u32 value, u32 width); -acpi_status -acpi_os_write_memory64(acpi_physical_address address, u64 value, u32 width); +acpi_os_write_memory(acpi_physical_address address, u64 value, u32 width); /* * Platform and hardware-independent PCI configuration space access -- cgit v1.2.3 From ea143604c5c8426923bbed7cd389fdaed7d58a2e Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Tue, 14 Feb 2012 18:23:39 +0800 Subject: ACPICA: ACPI 5: Update debug output for new notify values Add new notify values, add support for "hardware specific" notifies. Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/evmisc.c | 23 +++++++++++++---------- drivers/acpi/acpica/utdecode.c | 34 ++++++++++++++++++---------------- include/acpi/actypes.h | 6 ++++-- 3 files changed, 35 insertions(+), 28 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/evmisc.c b/drivers/acpi/acpica/evmisc.c index 0912f62f05a0..51ef9f5e002d 100644 --- a/drivers/acpi/acpica/evmisc.c +++ b/drivers/acpi/acpica/evmisc.c @@ -108,27 +108,30 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node, ACPI_FUNCTION_NAME(ev_queue_notify_request); /* - * For value 3 (Ejection Request), some device method may need to be run. - * For value 2 (Device Wake) if _PRW exists, the _PS0 method may need - * to be run. + * For value 0x03 (Ejection Request), may need to run a device method. + * For value 0x02 (Device Wake), if _PRW exists, may need to run + * the _PS0 method. * For value 0x80 (Status Change) on the power button or sleep button, - * initiate soft-off or sleep operation? + * initiate soft-off or sleep operation. + * + * For all cases, simply dispatch the notify to the handler. */ ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Dispatching Notify on [%4.4s] Node %p Value 0x%2.2X (%s)\n", - acpi_ut_get_node_name(node), node, notify_value, - acpi_ut_get_notify_name(notify_value))); + "Dispatching Notify on [%4.4s] (%s) Value 0x%2.2X (%s) Node %p\n", + acpi_ut_get_node_name(node), + acpi_ut_get_type_name(node->type), notify_value, + acpi_ut_get_notify_name(notify_value), node)); /* Get the notify object attached to the NS Node */ obj_desc = acpi_ns_get_attached_object(node); if (obj_desc) { - /* We have the notify object, Get the right handler */ + /* We have the notify object, Get the correct handler */ switch (node->type) { - /* Notify allowed only on these types */ + /* Notify is allowed only on these types */ case ACPI_TYPE_DEVICE: case ACPI_TYPE_THERMAL: @@ -152,7 +155,7 @@ acpi_ev_queue_notify_request(struct acpi_namespace_node * node, } /* - * If there is any handler to run, schedule the dispatcher. + * If there is a handler to run, schedule the dispatcher. * Check for: * 1) Global system notify handler * 2) Global device notify handler diff --git a/drivers/acpi/acpica/utdecode.c b/drivers/acpi/acpica/utdecode.c index d42ede5260c7..684849949bf3 100644 --- a/drivers/acpi/acpica/utdecode.c +++ b/drivers/acpi/acpica/utdecode.c @@ -497,19 +497,20 @@ char *acpi_ut_get_mutex_name(u32 mutex_id) /* Names for Notify() values, used for debug output */ -static const char *acpi_gbl_notify_value_names[] = { - "Bus Check", - "Device Check", - "Device Wake", - "Eject Request", - "Device Check Light", - "Frequency Mismatch", - "Bus Mode Mismatch", - "Power Fault", - "Capabilities Check", - "Device PLD Check", - "Reserved", - "System Locality Update" +static const char *acpi_gbl_notify_value_names[ACPI_NOTIFY_MAX + 1] = { + /* 00 */ "Bus Check", + /* 01 */ "Device Check", + /* 02 */ "Device Wake", + /* 03 */ "Eject Request", + /* 04 */ "Device Check Light", + /* 05 */ "Frequency Mismatch", + /* 06 */ "Bus Mode Mismatch", + /* 07 */ "Power Fault", + /* 08 */ "Capabilities Check", + /* 09 */ "Device PLD Check", + /* 10 */ "Reserved", + /* 11 */ "System Locality Update", + /* 12 */ "Shutdown Request" }; const char *acpi_ut_get_notify_name(u32 notify_value) @@ -519,9 +520,10 @@ const char *acpi_ut_get_notify_name(u32 notify_value) return (acpi_gbl_notify_value_names[notify_value]); } else if (notify_value <= ACPI_MAX_SYS_NOTIFY) { return ("Reserved"); - } else { /* Greater or equal to 0x80 */ - - return ("**Device Specific**"); + } else if (notify_value <= ACPI_MAX_DEVICE_SPECIFIC_NOTIFY) { + return ("Device Specific"); + } else { + return ("Hardware Specific"); } } #endif diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index d5dee7ce9474..48c4d5f8a492 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -532,8 +532,9 @@ typedef u64 acpi_integer; #define ACPI_NOTIFY_DEVICE_PLD_CHECK (u8) 0x09 #define ACPI_NOTIFY_RESERVED (u8) 0x0A #define ACPI_NOTIFY_LOCALITY_UPDATE (u8) 0x0B +#define ACPI_NOTIFY_SHUTDOWN_REQUEST (u8) 0x0C -#define ACPI_NOTIFY_MAX 0x0B +#define ACPI_NOTIFY_MAX 0x0C /* * Types associated with ACPI names and objects. The first group of @@ -698,7 +699,8 @@ typedef u32 acpi_event_status; #define ACPI_ALL_NOTIFY (ACPI_SYSTEM_NOTIFY | ACPI_DEVICE_NOTIFY) #define ACPI_MAX_NOTIFY_HANDLER_TYPE 0x3 -#define ACPI_MAX_SYS_NOTIFY 0x7f +#define ACPI_MAX_SYS_NOTIFY 0x7F +#define ACPI_MAX_DEVICE_SPECIFIC_NOTIFY 0xBF /* Address Space (Operation Region) Types */ -- cgit v1.2.3 From f7b004a17c9183f023796dea0d70284684ec000d Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Tue, 14 Feb 2012 18:31:56 +0800 Subject: ACPICA: Add acpi_os_physical_table_override interface This interface allows the host to override a table via a physical address, instead of the logical address required by acpi_os_table_override. This simplifies the host implementation. Initial implementation by Thomas Renninger. ACPICA implementation creates a single function for table overrides that attempts both a logical and a physical override. Signed-off-by: Bob Moore Signed-off-by: Thomas Renninger Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/actables.h | 5 ++ drivers/acpi/acpica/tbinstal.c | 117 ++++++++++++++++++++++++++++++++++------- drivers/acpi/acpica/tbutils.c | 93 +++++++++++++++++--------------- drivers/acpi/osl.c | 9 ++++ include/acpi/acpiosxf.h | 5 ++ 5 files changed, 166 insertions(+), 63 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/actables.h b/drivers/acpi/acpica/actables.h index d5bec304c823..6712965ba8ae 100644 --- a/drivers/acpi/acpica/actables.h +++ b/drivers/acpi/acpica/actables.h @@ -67,6 +67,11 @@ acpi_status acpi_tb_resize_root_table_list(void); acpi_status acpi_tb_verify_table(struct acpi_table_desc *table_desc); +struct acpi_table_header *acpi_tb_table_override(struct acpi_table_header + *table_header, + struct acpi_table_desc + *table_desc); + acpi_status acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index); diff --git a/drivers/acpi/acpica/tbinstal.c b/drivers/acpi/acpica/tbinstal.c index 1aecf7baa4e0..c03500b4cc7a 100644 --- a/drivers/acpi/acpica/tbinstal.c +++ b/drivers/acpi/acpica/tbinstal.c @@ -114,7 +114,6 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index) { u32 i; acpi_status status = AE_OK; - struct acpi_table_header *override_table = NULL; ACPI_FUNCTION_TRACE(tb_add_table); @@ -224,25 +223,10 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index) /* * ACPI Table Override: * Allow the host to override dynamically loaded tables. + * NOTE: the table is fully mapped at this point, and the mapping will + * be deleted by tb_table_override if the table is actually overridden. */ - status = acpi_os_table_override(table_desc->pointer, &override_table); - if (ACPI_SUCCESS(status) && override_table) { - ACPI_INFO((AE_INFO, - "%4.4s @ 0x%p Table override, replaced with:", - table_desc->pointer->signature, - ACPI_CAST_PTR(void, table_desc->address))); - - /* We can delete the table that was passed as a parameter */ - - acpi_tb_delete_table(table_desc); - - /* Setup descriptor for the new table */ - - table_desc->address = ACPI_PTR_TO_PHYSADDR(override_table); - table_desc->pointer = override_table; - table_desc->length = override_table->length; - table_desc->flags = ACPI_TABLE_ORIGIN_OVERRIDE; - } + (void)acpi_tb_table_override(table_desc->pointer, table_desc); /* Add the table to the global root table list */ @@ -261,6 +245,95 @@ acpi_tb_add_table(struct acpi_table_desc *table_desc, u32 *table_index) return_ACPI_STATUS(status); } +/******************************************************************************* + * + * FUNCTION: acpi_tb_table_override + * + * PARAMETERS: table_header - Header for the original table + * table_desc - Table descriptor initialized for the + * original table. May or may not be mapped. + * + * RETURN: Pointer to the entire new table. NULL if table not overridden. + * If overridden, installs the new table within the input table + * descriptor. + * + * DESCRIPTION: Attempt table override by calling the OSL override functions. + * Note: If the table is overridden, then the entire new table + * is mapped and returned by this function. + * + ******************************************************************************/ + +struct acpi_table_header *acpi_tb_table_override(struct acpi_table_header + *table_header, + struct acpi_table_desc + *table_desc) +{ + acpi_status status; + struct acpi_table_header *new_table = NULL; + acpi_physical_address new_address = 0; + u32 new_table_length = 0; + u8 new_flags; + char *override_type; + + /* (1) Attempt logical override (returns a logical address) */ + + status = acpi_os_table_override(table_header, &new_table); + if (ACPI_SUCCESS(status) && new_table) { + new_address = ACPI_PTR_TO_PHYSADDR(new_table); + new_table_length = new_table->length; + new_flags = ACPI_TABLE_ORIGIN_OVERRIDE; + override_type = "Logical"; + goto finish_override; + } + + /* (2) Attempt physical override (returns a physical address) */ + + status = acpi_os_physical_table_override(table_header, + &new_address, + &new_table_length); + if (ACPI_SUCCESS(status) && new_address && new_table_length) { + + /* Map the entire new table */ + + new_table = acpi_os_map_memory(new_address, new_table_length); + if (!new_table) { + ACPI_EXCEPTION((AE_INFO, AE_NO_MEMORY, + "%4.4s %p Attempted physical table override failed", + table_header->signature, + ACPI_CAST_PTR(void, + table_desc->address))); + return (NULL); + } + + override_type = "Physical"; + new_flags = ACPI_TABLE_ORIGIN_MAPPED; + goto finish_override; + } + + return (NULL); /* There was no override */ + + finish_override: + + ACPI_INFO((AE_INFO, + "%4.4s %p %s table override, new table: %p", + table_header->signature, + ACPI_CAST_PTR(void, table_desc->address), + override_type, new_table)); + + /* We can now unmap/delete the original table (if fully mapped) */ + + acpi_tb_delete_table(table_desc); + + /* Setup descriptor for the new table */ + + table_desc->address = new_address; + table_desc->pointer = new_table; + table_desc->length = new_table_length; + table_desc->flags = new_flags; + + return (new_table); +} + /******************************************************************************* * * FUNCTION: acpi_tb_resize_root_table_list @@ -396,7 +469,11 @@ void acpi_tb_delete_table(struct acpi_table_desc *table_desc) case ACPI_TABLE_ORIGIN_ALLOCATED: ACPI_FREE(table_desc->pointer); break; - default:; + + /* Not mapped or allocated, there is nothing we can do */ + + default: + return; } table_desc->pointer = NULL; diff --git a/drivers/acpi/acpica/tbutils.c b/drivers/acpi/acpica/tbutils.c index 1347c084fc2b..0a706cac37de 100644 --- a/drivers/acpi/acpica/tbutils.c +++ b/drivers/acpi/acpica/tbutils.c @@ -446,7 +446,7 @@ struct acpi_table_header *acpi_tb_copy_dsdt(u32 table_index) * RETURN: None * * DESCRIPTION: Install an ACPI table into the global data structure. The - * table override mechanism is implemented here to allow the host + * table override mechanism is called to allow the host * OS to replace any table before it is installed in the root * table array. * @@ -456,11 +456,9 @@ void acpi_tb_install_table(acpi_physical_address address, char *signature, u32 table_index) { - u8 flags; - acpi_status status; - struct acpi_table_header *table_to_install; - struct acpi_table_header *mapped_table; - struct acpi_table_header *override_table = NULL; + struct acpi_table_header *table; + struct acpi_table_header *final_table; + struct acpi_table_desc *table_desc; if (!address) { ACPI_ERROR((AE_INFO, @@ -471,69 +469,78 @@ acpi_tb_install_table(acpi_physical_address address, /* Map just the table header */ - mapped_table = - acpi_os_map_memory(address, sizeof(struct acpi_table_header)); - if (!mapped_table) { + table = acpi_os_map_memory(address, sizeof(struct acpi_table_header)); + if (!table) { + ACPI_ERROR((AE_INFO, + "Could not map memory for table [%s] at %p", + signature, ACPI_CAST_PTR(void, address))); return; } /* If a particular signature is expected (DSDT/FACS), it must match */ - if (signature && !ACPI_COMPARE_NAME(mapped_table->signature, signature)) { + if (signature && !ACPI_COMPARE_NAME(table->signature, signature)) { ACPI_ERROR((AE_INFO, "Invalid signature 0x%X for ACPI table, expected [%s]", - *ACPI_CAST_PTR(u32, mapped_table->signature), - signature)); + *ACPI_CAST_PTR(u32, table->signature), signature)); goto unmap_and_exit; } + /* + * Initialize the table entry. Set the pointer to NULL, since the + * table is not fully mapped at this time. + */ + table_desc = &acpi_gbl_root_table_list.tables[table_index]; + + table_desc->address = address; + table_desc->pointer = NULL; + table_desc->length = table->length; + table_desc->flags = ACPI_TABLE_ORIGIN_MAPPED; + ACPI_MOVE_32_TO_32(table_desc->signature.ascii, table->signature); + /* * ACPI Table Override: * * Before we install the table, let the host OS override it with a new * one if desired. Any table within the RSDT/XSDT can be replaced, * including the DSDT which is pointed to by the FADT. + * + * NOTE: If the table is overridden, then final_table will contain a + * mapped pointer to the full new table. If the table is not overridden, + * or if there has been a physical override, then the table will be + * fully mapped later (in verify table). In any case, we must + * unmap the header that was mapped above. */ - status = acpi_os_table_override(mapped_table, &override_table); - if (ACPI_SUCCESS(status) && override_table) { - ACPI_INFO((AE_INFO, - "%4.4s @ 0x%p Table override, replaced with:", - mapped_table->signature, ACPI_CAST_PTR(void, - address))); - - acpi_gbl_root_table_list.tables[table_index].pointer = - override_table; - address = ACPI_PTR_TO_PHYSADDR(override_table); - - table_to_install = override_table; - flags = ACPI_TABLE_ORIGIN_OVERRIDE; - } else { - table_to_install = mapped_table; - flags = ACPI_TABLE_ORIGIN_MAPPED; + final_table = acpi_tb_table_override(table, table_desc); + if (!final_table) { + final_table = table; /* There was no override */ } - /* Initialize the table entry */ + acpi_tb_print_table_header(table_desc->address, final_table); - acpi_gbl_root_table_list.tables[table_index].address = address; - acpi_gbl_root_table_list.tables[table_index].length = - table_to_install->length; - acpi_gbl_root_table_list.tables[table_index].flags = flags; - - ACPI_MOVE_32_TO_32(& - (acpi_gbl_root_table_list.tables[table_index]. - signature), table_to_install->signature); - - acpi_tb_print_table_header(address, table_to_install); + /* Set the global integer width (based upon revision of the DSDT) */ if (table_index == ACPI_TABLE_INDEX_DSDT) { + acpi_ut_set_integer_width(final_table->revision); + } - /* Global integer width is based upon revision of the DSDT */ - - acpi_ut_set_integer_width(table_to_install->revision); + /* + * If we have a physical override during this early loading of the ACPI + * tables, unmap the table for now. It will be mapped again later when + * it is actually used. This supports very early loading of ACPI tables, + * before virtual memory is fully initialized and running within the + * host OS. Note: A logical override has the ACPI_TABLE_ORIGIN_OVERRIDE + * flag set and will not be deleted below. + */ + if (final_table != table) { + acpi_tb_delete_table(table_desc); } unmap_and_exit: - acpi_os_unmap_memory(mapped_table, sizeof(struct acpi_table_header)); + + /* Always unmap the table header that we mapped above */ + + acpi_os_unmap_memory(table, sizeof(struct acpi_table_header)); } /******************************************************************************* diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 1dea025e4e98..07d426425b59 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -554,6 +554,15 @@ acpi_os_table_override(struct acpi_table_header * existing_table, return AE_OK; } +acpi_status +acpi_os_physical_table_override(struct acpi_table_header *existing_table, + acpi_physical_address * new_address, + u32 *new_table_length) +{ + return AE_SUPPORT; +} + + static irqreturn_t acpi_irq(int irq, void *dev_id) { u32 handled; diff --git a/include/acpi/acpiosxf.h b/include/acpi/acpiosxf.h index 1cd22045fbd4..21a5548c6686 100644 --- a/include/acpi/acpiosxf.h +++ b/include/acpi/acpiosxf.h @@ -95,6 +95,11 @@ acpi_status acpi_os_table_override(struct acpi_table_header *existing_table, struct acpi_table_header **new_table); +acpi_status +acpi_os_physical_table_override(struct acpi_table_header *existing_table, + acpi_physical_address * new_address, + u32 *new_table_length); + /* * Spinlock primitives */ -- cgit v1.2.3 From 72a8887a356076dfa39bd6691c52446f90a50480 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Tue, 14 Feb 2012 18:57:13 +0800 Subject: ACPICA: Add table-driven dispatch for sleep/wake functions Simplifies the code, especially the compile-time ACPI_REDUCED_HARDWARE option. Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/acmacros.h | 6 ++ drivers/acpi/acpica/hwxfsleep.c | 136 ++++++++++++++++++++++++---------------- include/acpi/actypes.h | 9 +++ 3 files changed, 97 insertions(+), 54 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index ef338a96f5b2..f119f473f71a 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -516,6 +516,12 @@ #endif /* ACPI_DEBUG_OUTPUT */ +#if (!ACPI_REDUCED_HARDWARE) +#define ACPI_HW_OPTIONAL_FUNCTION(addr) addr +#else +#define ACPI_HW_OPTIONAL_FUNCTION(addr) NULL +#endif + /* * Some code only gets executed when the debugger is built in. * Note that this is entirely independent of whether the diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c index ff2055804809..b711f97c9a87 100644 --- a/drivers/acpi/acpica/hwxfsleep.c +++ b/drivers/acpi/acpica/hwxfsleep.c @@ -48,6 +48,34 @@ #define _COMPONENT ACPI_HARDWARE ACPI_MODULE_NAME("hwxfsleep") +/* Local prototypes */ +static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id); + +/* + * Dispatch table used to efficiently branch to the various sleep + * functions. + */ +#define ACPI_SLEEP_FUNCTION 0 +#define ACPI_WAKE_PREP_FUNCTION 1 +#define ACPI_WAKE_FUNCTION 2 + +/* Legacy functions are optional, based upon ACPI_REDUCED_HARDWARE */ + +static struct acpi_sleep_functions acpi_sleep_dispatch[] = { + {ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_sleep), + acpi_hw_extended_sleep}, + {ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake_prep), + acpi_hw_extended_wake_prep}, + {ACPI_HW_OPTIONAL_FUNCTION(acpi_hw_legacy_wake), acpi_hw_extended_wake} +}; + +/* + * These functions are removed for the ACPI_REDUCED_HARDWARE case: + * acpi_set_firmware_waking_vector + * acpi_set_firmware_waking_vector64 + * acpi_enter_sleep_state_s4bios + */ + #if (!ACPI_REDUCED_HARDWARE) /******************************************************************************* * @@ -61,6 +89,7 @@ ACPI_MODULE_NAME("hwxfsleep") * DESCRIPTION: Sets the 32-bit firmware_waking_vector field of the FACS * ******************************************************************************/ + acpi_status acpi_set_firmware_waking_vector(u32 physical_address) { ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector); @@ -191,6 +220,52 @@ acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void) ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios) #endif /* !ACPI_REDUCED_HARDWARE */ +/******************************************************************************* + * + * FUNCTION: acpi_hw_sleep_dispatch + * + * PARAMETERS: sleep_state - Which sleep state to enter/exit + * function_id - Sleep, wake_prep, or Wake + * + * RETURN: Status from the invoked sleep handling function. + * + * DESCRIPTION: Dispatch a sleep/wake request to the appropriate handling + * function. + * + ******************************************************************************/ +static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id) +{ + acpi_status status; + struct acpi_sleep_functions *sleep_functions = + &acpi_sleep_dispatch[function_id]; + +#if (!ACPI_REDUCED_HARDWARE) + + /* + * If the Hardware Reduced flag is set (from the FADT), we must + * use the extended sleep registers + */ + if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { + status = sleep_functions->extended_function(sleep_state); + } else { + /* Legacy sleep */ + + status = sleep_functions->legacy_function(sleep_state); + } + + return (status); + +#else + /* + * For the case where reduced-hardware-only code is being generated, + * we know that only the extended sleep registers are available + */ + status = sleep_functions->extended_function(sleep_state); + return (status); + +#endif /* !ACPI_REDUCED_HARDWARE */ +} + /******************************************************************************* * * FUNCTION: acpi_enter_sleep_state_prep @@ -199,12 +274,13 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios) * * RETURN: Status * - * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231) + * DESCRIPTION: Prepare to enter a system sleep state. * This function must execute with interrupts enabled. * We break sleeping into 2 stages so that OSPM can handle * various OS-specific tasks between the two steps. * ******************************************************************************/ + acpi_status acpi_enter_sleep_state_prep(u8 sleep_state) { acpi_status status; @@ -291,23 +367,8 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b)); return_ACPI_STATUS(AE_AML_OPERAND_VALUE); } -#if (!ACPI_REDUCED_HARDWARE) - - /* If Hardware Reduced flag is set, must use the extended sleep registers */ - - if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { - status = acpi_hw_extended_sleep(sleep_state); - } else { - /* Legacy sleep */ - - status = acpi_hw_legacy_sleep(sleep_state); - } - -#else - status = acpi_hw_extended_sleep(sleep_state); - -#endif /* !ACPI_REDUCED_HARDWARE */ + status = acpi_hw_sleep_dispatch(sleep_state, ACPI_SLEEP_FUNCTION); return_ACPI_STATUS(status); } @@ -330,26 +391,9 @@ acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) { acpi_status status; - ACPI_FUNCTION_TRACE(acpi_leave_sleep_state); - - -#if (!ACPI_REDUCED_HARDWARE) - - /* If Hardware Reduced flag is set, must use the extended sleep registers */ - - if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { - status = acpi_hw_extended_wake_prep(sleep_state); - } else { - /* Legacy sleep */ - - status = acpi_hw_legacy_wake_prep(sleep_state); - } -#else - status = acpi_hw_extended_wake_prep(sleep_state); - -#endif /* !ACPI_REDUCED_HARDWARE */ - + ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep); + status = acpi_hw_sleep_dispatch(sleep_state, ACPI_WAKE_PREP_FUNCTION); return_ACPI_STATUS(status); } @@ -359,7 +403,7 @@ ACPI_EXPORT_SYMBOL(acpi_leave_sleep_state_prep) * * FUNCTION: acpi_leave_sleep_state * - * PARAMETERS: sleep_state - Which sleep state we just exited + * PARAMETERS: sleep_state - Which sleep state we are exiting * * RETURN: Status * @@ -374,23 +418,7 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state) ACPI_FUNCTION_TRACE(acpi_leave_sleep_state); -#if (!ACPI_REDUCED_HARDWARE) - - /* If Hardware Reduced flag is set, must use the extended sleep registers */ - - if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { - status = acpi_hw_extended_wake(sleep_state); - } else { - /* Legacy sleep */ - - status = acpi_hw_legacy_wake(sleep_state); - } - -#else - status = acpi_hw_extended_wake(sleep_state); - -#endif /* !ACPI_REDUCED_HARDWARE */ - + status = acpi_hw_sleep_dispatch(sleep_state, ACPI_WAKE_FUNCTION); return_ACPI_STATUS(status); } diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 48c4d5f8a492..349615833a4a 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -788,6 +788,15 @@ typedef u8 acpi_adr_space_type; #define ACPI_ENABLE_EVENT 1 #define ACPI_DISABLE_EVENT 0 +/* Sleep function dispatch */ + +typedef acpi_status(*ACPI_SLEEP_FUNCTION) (u8 sleep_state); + +struct acpi_sleep_functions { + ACPI_SLEEP_FUNCTION legacy_function; + ACPI_SLEEP_FUNCTION extended_function; +}; + /* * External ACPI object definition */ -- cgit v1.2.3 From dd0228e9220b6c8320ffbf64e58fdac041ec0931 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Mon, 20 Feb 2012 13:50:13 +0800 Subject: ACPICA: Update to version 20120215 Version 20120215. Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- include/acpi/acpixf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index e8600dd92573..fb8a238115d6 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -47,7 +47,7 @@ /* Current ACPICA subsystem version in YYYYMMDD format */ -#define ACPI_CA_VERSION 0x20120111 +#define ACPI_CA_VERSION 0x20120215 #include "acconfig.h" #include "actypes.h" -- cgit v1.2.3 From 4efeeecd884de36b77c64489dee7eb7ca4d6bed0 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 21 Mar 2012 09:42:45 +0800 Subject: ACPICA: Clarify METHOD_NAME* defines for full-pathname cases Changed the METHOD_NAME* defines that define a full pathname to the method to METHOD_PATHNAME* in order to make it clear that it is not a simple 4-character ACPI name. Used for the various sleep/wake methods. Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/acpica/hwesleep.c | 22 +++++++++++----------- drivers/acpi/acpica/hwsleep.c | 10 +++++----- drivers/acpi/acpica/hwxfsleep.c | 5 +++-- drivers/acpi/acpica/nsdumpdv.c | 2 +- drivers/acpi/sleep.c | 4 ++-- include/acpi/acnames.h | 12 ++++++------ 6 files changed, 28 insertions(+), 27 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c index 9e44c6c767e6..6cbc4e10bfa8 100644 --- a/drivers/acpi/acpica/hwesleep.c +++ b/drivers/acpi/acpica/hwesleep.c @@ -59,7 +59,7 @@ MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".); * * FUNCTION: acpi_hw_execute_sleep_method * - * PARAMETERS: method_name - Pathname of method to execute + * PARAMETERS: method_pathname - Pathname of method to execute * integer_argument - Argument to pass to the method * * RETURN: None @@ -68,7 +68,7 @@ MODULE_PARM_DESC(bfs, "Enable evaluation of _BFS on resume".); * and no return value. * ******************************************************************************/ -void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument) +void acpi_hw_execute_sleep_method(char *method_pathname, u32 integer_argument) { struct acpi_object_list arg_list; union acpi_object arg; @@ -76,10 +76,10 @@ void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument) ACPI_FUNCTION_TRACE(hw_execute_sleep_method); - if (!ACPI_STRCMP(METHOD_NAME__GTS, method_name) && !gts) + if (!ACPI_STRCMP(METHOD_PATHNAME__GTS, method_pathname) && !gts) return_VOID; - if (!ACPI_STRCMP(METHOD_NAME__BFS, method_name) && !bfs) + if (!ACPI_STRCMP(METHOD_PATHNAME__BFS, method_pathname) && !bfs) return_VOID; /* One argument, integer_argument; No return value expected */ @@ -89,10 +89,10 @@ void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument) arg.type = ACPI_TYPE_INTEGER; arg.integer.value = (u64)integer_argument; - status = acpi_evaluate_object(NULL, method_name, &arg_list, NULL); + status = acpi_evaluate_object(NULL, method_pathname, &arg_list, NULL); if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { ACPI_EXCEPTION((AE_INFO, status, "While executing method %s", - method_name)); + method_pathname)); } return_VOID; @@ -138,7 +138,7 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state) /* Execute the _GTS method (Going To Sleep) */ - acpi_hw_execute_sleep_method(METHOD_NAME__GTS, sleep_state); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__GTS, sleep_state); /* Flush caches, as per ACPI specification */ @@ -208,7 +208,7 @@ acpi_status acpi_hw_extended_wake_prep(u8 sleep_state) &acpi_gbl_FADT.sleep_control); } - acpi_hw_execute_sleep_method(METHOD_NAME__BFS, sleep_state); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__BFS, sleep_state); return_ACPI_STATUS(AE_OK); } @@ -235,8 +235,8 @@ acpi_status acpi_hw_extended_wake(u8 sleep_state) /* Execute the wake methods */ - acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WAKING); - acpi_hw_execute_sleep_method(METHOD_NAME__WAK, sleep_state); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WAKING); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__WAK, sleep_state); /* * Some BIOS code assumes that WAK_STS will be cleared on resume @@ -246,6 +246,6 @@ acpi_status acpi_hw_extended_wake(u8 sleep_state) (void)acpi_write(ACPI_X_WAKE_STATUS, &acpi_gbl_FADT.sleep_status); acpi_gbl_system_awake_and_running = TRUE; - acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WORKING); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING); return_ACPI_STATUS(AE_OK); } diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c index b96d41bbc64e..aba36349ba4d 100644 --- a/drivers/acpi/acpica/hwsleep.c +++ b/drivers/acpi/acpica/hwsleep.c @@ -123,7 +123,7 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state) /* Execute the _GTS method (Going To Sleep) */ - acpi_hw_execute_sleep_method(METHOD_NAME__GTS, sleep_state); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__GTS, sleep_state); /* Get current value of PM1A control */ @@ -279,7 +279,7 @@ acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state) } } - acpi_hw_execute_sleep_method(METHOD_NAME__BFS, sleep_state); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__BFS, sleep_state); return_ACPI_STATUS(status); } @@ -305,7 +305,7 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state) /* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */ acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID; - acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WAKING); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WAKING); /* * GPEs must be enabled before _WAK is called as GPEs @@ -329,7 +329,7 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state) * Now we can execute _WAK, etc. Some machines require that the GPEs * are enabled before the wake methods are executed. */ - acpi_hw_execute_sleep_method(METHOD_NAME__WAK, sleep_state); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__WAK, sleep_state); /* * Some BIOS code assumes that WAK_STS will be cleared on resume @@ -361,7 +361,7 @@ acpi_status acpi_hw_legacy_wake(u8 sleep_state) return_ACPI_STATUS(status); } - acpi_hw_execute_sleep_method(METHOD_NAME__SST, ACPI_SST_WORKING); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING); return_ACPI_STATUS(status); } diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c index b711f97c9a87..cf0168e538d9 100644 --- a/drivers/acpi/acpica/hwxfsleep.c +++ b/drivers/acpi/acpica/hwxfsleep.c @@ -306,7 +306,8 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state) arg.type = ACPI_TYPE_INTEGER; arg.integer.value = sleep_state; - status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL); + status = + acpi_evaluate_object(NULL, METHOD_PATHNAME__PTS, &arg_list, NULL); if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) { return_ACPI_STATUS(status); } @@ -337,7 +338,7 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state) * Set the system indicators to show the desired sleep state. * _SST is an optional method (return no error if not found) */ - acpi_hw_execute_sleep_method(METHOD_NAME__SST, sst_value); + acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, sst_value); return_ACPI_STATUS(AE_OK); } diff --git a/drivers/acpi/acpica/nsdumpdv.c b/drivers/acpi/acpica/nsdumpdv.c index 30ea5bc53a78..3b5acb0eb406 100644 --- a/drivers/acpi/acpica/nsdumpdv.c +++ b/drivers/acpi/acpica/nsdumpdv.c @@ -121,7 +121,7 @@ void acpi_ns_dump_root_devices(void) return; } - status = acpi_get_handle(NULL, ACPI_NS_SYSTEM_BUS, &sys_bus_handle); + status = acpi_get_handle(NULL, METHOD_NAME__SB_, &sys_bus_handle); if (ACPI_FAILURE(status)) { return; } diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index ca191ff97844..4fda549fa599 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -788,13 +788,13 @@ static void __init acpi_gts_bfs_check(void) { acpi_handle dummy; - if (ACPI_SUCCESS(acpi_get_handle(ACPI_ROOT_OBJECT, METHOD_NAME__GTS, &dummy))) + if (ACPI_SUCCESS(acpi_get_handle(ACPI_ROOT_OBJECT, METHOD_PATHNAME__GTS, &dummy))) { printk(KERN_NOTICE PREFIX "BIOS offers _GTS\n"); printk(KERN_NOTICE PREFIX "If \"acpi.gts=1\" improves suspend, " "please notify linux-acpi@vger.kernel.org\n"); } - if (ACPI_SUCCESS(acpi_get_handle(ACPI_ROOT_OBJECT, METHOD_NAME__BFS, &dummy))) + if (ACPI_SUCCESS(acpi_get_handle(ACPI_ROOT_OBJECT, METHOD_PATHNAME__BFS, &dummy))) { printk(KERN_NOTICE PREFIX "BIOS offers _BFS\n"); printk(KERN_NOTICE PREFIX "If \"acpi.bfs=1\" improves resume, " diff --git a/include/acpi/acnames.h b/include/acpi/acnames.h index 5b5af0d30a97..38f508816e4a 100644 --- a/include/acpi/acnames.h +++ b/include/acpi/acnames.h @@ -46,6 +46,7 @@ /* Method names - these methods can appear anywhere in the namespace */ +#define METHOD_NAME__SB_ "_SB_" #define METHOD_NAME__HID "_HID" #define METHOD_NAME__CID "_CID" #define METHOD_NAME__UID "_UID" @@ -64,11 +65,11 @@ /* Method names - these methods must appear at the namespace root */ -#define METHOD_NAME__BFS "\\_BFS" -#define METHOD_NAME__GTS "\\_GTS" -#define METHOD_NAME__PTS "\\_PTS" -#define METHOD_NAME__SST "\\_SI._SST" -#define METHOD_NAME__WAK "\\_WAK" +#define METHOD_PATHNAME__BFS "\\_BFS" +#define METHOD_PATHNAME__GTS "\\_GTS" +#define METHOD_PATHNAME__PTS "\\_PTS" +#define METHOD_PATHNAME__SST "\\_SI._SST" +#define METHOD_PATHNAME__WAK "\\_WAK" /* Definitions of the predefined namespace names */ @@ -79,6 +80,5 @@ #define ACPI_PREFIX_LOWER (u32) 0x69706361 /* "acpi" */ #define ACPI_NS_ROOT_PATH "\\" -#define ACPI_NS_SYSTEM_BUS "_SB_" #endif /* __ACNAMES_H__ */ -- cgit v1.2.3 From 8a73b17e4c0e09cb5b80deee5451e29b830df4cc Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Wed, 21 Mar 2012 10:01:49 +0800 Subject: ACPICA: Sleep/Wake interfaces: optionally execute _GTS and _BFS Enhanced the sleep/wake interfaces to optionally execute the _GTS method (Going To Sleep), and the _BFS method (Back From Sleep). Windows apparently does not execute these methods, and therefore these methods are often untested. It has been seen on some systems where the execution of these methods causes errors and also prevents the machine from entering S5. It is therefore suggested that host operating systems do not execute these methods by default. In the future, perhaps these methods can be optionally executed based on the age of the system and/or what is the newest version of Windows that the BIOS asks for via _OSI. Signed-off-by: Lin Ming Signed-off-by: Bob Moore Signed-off-by: Len Brown --- drivers/acpi/acpica/achware.h | 12 ++++++------ drivers/acpi/acpica/hwesleep.c | 21 +++++++++++++++------ drivers/acpi/acpica/hwsleep.c | 21 +++++++++++++++------ drivers/acpi/acpica/hwxfsleep.c | 35 ++++++++++++++++++++--------------- drivers/acpi/sleep.c | 13 +++++++------ include/acpi/acpixf.h | 4 ++-- include/acpi/actypes.h | 9 ++++++++- 7 files changed, 73 insertions(+), 42 deletions(-) (limited to 'include') diff --git a/drivers/acpi/acpica/achware.h b/drivers/acpi/acpica/achware.h index 5de4ec72766d..5ccb99ae3a6f 100644 --- a/drivers/acpi/acpica/achware.h +++ b/drivers/acpi/acpica/achware.h @@ -83,22 +83,22 @@ acpi_status acpi_hw_clear_acpi_status(void); /* * hwsleep - sleep/wake support (Legacy sleep registers) */ -acpi_status acpi_hw_legacy_sleep(u8 sleep_state); +acpi_status acpi_hw_legacy_sleep(u8 sleep_state, u8 flags); -acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state); +acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state, u8 flags); -acpi_status acpi_hw_legacy_wake(u8 sleep_state); +acpi_status acpi_hw_legacy_wake(u8 sleep_state, u8 flags); /* * hwesleep - sleep/wake support (Extended FADT-V5 sleep registers) */ void acpi_hw_execute_sleep_method(char *method_name, u32 integer_argument); -acpi_status acpi_hw_extended_sleep(u8 sleep_state); +acpi_status acpi_hw_extended_sleep(u8 sleep_state, u8 flags); -acpi_status acpi_hw_extended_wake_prep(u8 sleep_state); +acpi_status acpi_hw_extended_wake_prep(u8 sleep_state, u8 flags); -acpi_status acpi_hw_extended_wake(u8 sleep_state); +acpi_status acpi_hw_extended_wake(u8 sleep_state, u8 flags); /* * hwvalid - Port I/O with validation diff --git a/drivers/acpi/acpica/hwesleep.c b/drivers/acpi/acpica/hwesleep.c index 6cbc4e10bfa8..1c409e82c461 100644 --- a/drivers/acpi/acpica/hwesleep.c +++ b/drivers/acpi/acpica/hwesleep.c @@ -103,6 +103,7 @@ void acpi_hw_execute_sleep_method(char *method_pathname, u32 integer_argument) * FUNCTION: acpi_hw_extended_sleep * * PARAMETERS: sleep_state - Which sleep state to enter + * Flags - ACPI_EXECUTE_GTS to run optional method * * RETURN: Status * @@ -112,7 +113,7 @@ void acpi_hw_execute_sleep_method(char *method_pathname, u32 integer_argument) * ******************************************************************************/ -acpi_status acpi_hw_extended_sleep(u8 sleep_state) +acpi_status acpi_hw_extended_sleep(u8 sleep_state, u8 flags) { acpi_status status; u8 sleep_type_value; @@ -136,9 +137,11 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state) acpi_gbl_system_awake_and_running = FALSE; - /* Execute the _GTS method (Going To Sleep) */ + /* Optionally execute _GTS (Going To Sleep) */ - acpi_hw_execute_sleep_method(METHOD_PATHNAME__GTS, sleep_state); + if (flags & ACPI_EXECUTE_GTS) { + acpi_hw_execute_sleep_method(METHOD_PATHNAME__GTS, sleep_state); + } /* Flush caches, as per ACPI specification */ @@ -181,6 +184,7 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state) * FUNCTION: acpi_hw_extended_wake_prep * * PARAMETERS: sleep_state - Which sleep state we just exited + * Flags - ACPI_EXECUTE_BFS to run optional method * * RETURN: Status * @@ -189,7 +193,7 @@ acpi_status acpi_hw_extended_sleep(u8 sleep_state) * ******************************************************************************/ -acpi_status acpi_hw_extended_wake_prep(u8 sleep_state) +acpi_status acpi_hw_extended_wake_prep(u8 sleep_state, u8 flags) { acpi_status status; u8 sleep_type_value; @@ -208,7 +212,11 @@ acpi_status acpi_hw_extended_wake_prep(u8 sleep_state) &acpi_gbl_FADT.sleep_control); } - acpi_hw_execute_sleep_method(METHOD_PATHNAME__BFS, sleep_state); + /* Optionally execute _BFS (Back From Sleep) */ + + if (flags & ACPI_EXECUTE_BFS) { + acpi_hw_execute_sleep_method(METHOD_PATHNAME__BFS, sleep_state); + } return_ACPI_STATUS(AE_OK); } @@ -217,6 +225,7 @@ acpi_status acpi_hw_extended_wake_prep(u8 sleep_state) * FUNCTION: acpi_hw_extended_wake * * PARAMETERS: sleep_state - Which sleep state we just exited + * Flags - Reserved, set to zero * * RETURN: Status * @@ -225,7 +234,7 @@ acpi_status acpi_hw_extended_wake_prep(u8 sleep_state) * ******************************************************************************/ -acpi_status acpi_hw_extended_wake(u8 sleep_state) +acpi_status acpi_hw_extended_wake(u8 sleep_state, u8 flags) { ACPI_FUNCTION_TRACE(hw_extended_wake); diff --git a/drivers/acpi/acpica/hwsleep.c b/drivers/acpi/acpica/hwsleep.c index aba36349ba4d..8ab325cefa68 100644 --- a/drivers/acpi/acpica/hwsleep.c +++ b/drivers/acpi/acpica/hwsleep.c @@ -56,6 +56,7 @@ ACPI_MODULE_NAME("hwsleep") * FUNCTION: acpi_hw_legacy_sleep * * PARAMETERS: sleep_state - Which sleep state to enter + * Flags - ACPI_EXECUTE_GTS to run optional method * * RETURN: Status * @@ -63,7 +64,7 @@ ACPI_MODULE_NAME("hwsleep") * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED * ******************************************************************************/ -acpi_status acpi_hw_legacy_sleep(u8 sleep_state) +acpi_status acpi_hw_legacy_sleep(u8 sleep_state, u8 flags) { struct acpi_bit_register_info *sleep_type_reg_info; struct acpi_bit_register_info *sleep_enable_reg_info; @@ -121,9 +122,11 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state) return_ACPI_STATUS(status); } - /* Execute the _GTS method (Going To Sleep) */ + /* Optionally execute _GTS (Going To Sleep) */ - acpi_hw_execute_sleep_method(METHOD_PATHNAME__GTS, sleep_state); + if (flags & ACPI_EXECUTE_GTS) { + acpi_hw_execute_sleep_method(METHOD_PATHNAME__GTS, sleep_state); + } /* Get current value of PM1A control */ @@ -219,6 +222,7 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state) * FUNCTION: acpi_hw_legacy_wake_prep * * PARAMETERS: sleep_state - Which sleep state we just exited + * Flags - ACPI_EXECUTE_BFS to run optional method * * RETURN: Status * @@ -228,7 +232,7 @@ acpi_status acpi_hw_legacy_sleep(u8 sleep_state) * ******************************************************************************/ -acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state) +acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state, u8 flags) { acpi_status status; struct acpi_bit_register_info *sleep_type_reg_info; @@ -279,7 +283,11 @@ acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state) } } - acpi_hw_execute_sleep_method(METHOD_PATHNAME__BFS, sleep_state); + /* Optionally execute _BFS (Back From Sleep) */ + + if (flags & ACPI_EXECUTE_BFS) { + acpi_hw_execute_sleep_method(METHOD_PATHNAME__BFS, sleep_state); + } return_ACPI_STATUS(status); } @@ -288,6 +296,7 @@ acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state) * FUNCTION: acpi_hw_legacy_wake * * PARAMETERS: sleep_state - Which sleep state we just exited + * Flags - Reserved, set to zero * * RETURN: Status * @@ -296,7 +305,7 @@ acpi_status acpi_hw_legacy_wake_prep(u8 sleep_state) * ******************************************************************************/ -acpi_status acpi_hw_legacy_wake(u8 sleep_state) +acpi_status acpi_hw_legacy_wake(u8 sleep_state, u8 flags) { acpi_status status; diff --git a/drivers/acpi/acpica/hwxfsleep.c b/drivers/acpi/acpica/hwxfsleep.c index cf0168e538d9..762d059bb508 100644 --- a/drivers/acpi/acpica/hwxfsleep.c +++ b/drivers/acpi/acpica/hwxfsleep.c @@ -49,15 +49,16 @@ ACPI_MODULE_NAME("hwxfsleep") /* Local prototypes */ -static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id); +static acpi_status +acpi_hw_sleep_dispatch(u8 sleep_state, u8 flags, u32 function_id); /* * Dispatch table used to efficiently branch to the various sleep * functions. */ -#define ACPI_SLEEP_FUNCTION 0 -#define ACPI_WAKE_PREP_FUNCTION 1 -#define ACPI_WAKE_FUNCTION 2 +#define ACPI_SLEEP_FUNCTION_ID 0 +#define ACPI_WAKE_PREP_FUNCTION_ID 1 +#define ACPI_WAKE_FUNCTION_ID 2 /* Legacy functions are optional, based upon ACPI_REDUCED_HARDWARE */ @@ -233,7 +234,8 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios) * function. * ******************************************************************************/ -static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id) +static acpi_status +acpi_hw_sleep_dispatch(u8 sleep_state, u8 flags, u32 function_id) { acpi_status status; struct acpi_sleep_functions *sleep_functions = @@ -246,11 +248,11 @@ static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id) * use the extended sleep registers */ if (acpi_gbl_reduced_hardware || acpi_gbl_FADT.sleep_control.address) { - status = sleep_functions->extended_function(sleep_state); + status = sleep_functions->extended_function(sleep_state, flags); } else { /* Legacy sleep */ - status = sleep_functions->legacy_function(sleep_state); + status = sleep_functions->legacy_function(sleep_state, flags); } return (status); @@ -260,7 +262,7 @@ static acpi_status acpi_hw_sleep_dispatch(u8 sleep_state, u32 function_id) * For the case where reduced-hardware-only code is being generated, * we know that only the extended sleep registers are available */ - status = sleep_functions->extended_function(sleep_state); + status = sleep_functions->extended_function(sleep_state, flags); return (status); #endif /* !ACPI_REDUCED_HARDWARE */ @@ -290,8 +292,6 @@ acpi_status acpi_enter_sleep_state_prep(u8 sleep_state) ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_prep); - /* _PSW methods could be run here to enable wake-on keyboard, LAN, etc. */ - status = acpi_get_sleep_type_data(sleep_state, &acpi_gbl_sleep_type_a, &acpi_gbl_sleep_type_b); @@ -349,6 +349,7 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep) * FUNCTION: acpi_enter_sleep_state * * PARAMETERS: sleep_state - Which sleep state to enter + * Flags - ACPI_EXECUTE_GTS to run optional method * * RETURN: Status * @@ -356,7 +357,7 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep) * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED * ******************************************************************************/ -acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) +acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state, u8 flags) { acpi_status status; @@ -369,7 +370,8 @@ acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state) return_ACPI_STATUS(AE_AML_OPERAND_VALUE); } - status = acpi_hw_sleep_dispatch(sleep_state, ACPI_SLEEP_FUNCTION); + status = + acpi_hw_sleep_dispatch(sleep_state, flags, ACPI_SLEEP_FUNCTION_ID); return_ACPI_STATUS(status); } @@ -380,6 +382,7 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state) * FUNCTION: acpi_leave_sleep_state_prep * * PARAMETERS: sleep_state - Which sleep state we are exiting + * Flags - ACPI_EXECUTE_BFS to run optional method * * RETURN: Status * @@ -388,13 +391,15 @@ ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state) * Called with interrupts DISABLED. * ******************************************************************************/ -acpi_status acpi_leave_sleep_state_prep(u8 sleep_state) +acpi_status acpi_leave_sleep_state_prep(u8 sleep_state, u8 flags) { acpi_status status; ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep); - status = acpi_hw_sleep_dispatch(sleep_state, ACPI_WAKE_PREP_FUNCTION); + status = + acpi_hw_sleep_dispatch(sleep_state, flags, + ACPI_WAKE_PREP_FUNCTION_ID); return_ACPI_STATUS(status); } @@ -419,7 +424,7 @@ acpi_status acpi_leave_sleep_state(u8 sleep_state) ACPI_FUNCTION_TRACE(acpi_leave_sleep_state); - status = acpi_hw_sleep_dispatch(sleep_state, ACPI_WAKE_FUNCTION); + status = acpi_hw_sleep_dispatch(sleep_state, 0, ACPI_WAKE_FUNCTION_ID); return_ACPI_STATUS(status); } diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 4fda549fa599..8f1fb4520d24 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -250,7 +250,8 @@ static int acpi_suspend_enter(suspend_state_t pm_state) switch (acpi_state) { case ACPI_STATE_S1: barrier(); - status = acpi_enter_sleep_state(acpi_state); + status = acpi_enter_sleep_state(acpi_state, + ACPI_NO_OPTIONAL_METHODS); break; case ACPI_STATE_S3: @@ -265,7 +266,7 @@ static int acpi_suspend_enter(suspend_state_t pm_state) acpi_write_bit_register(ACPI_BITREG_SCI_ENABLE, 1); /* Reprogram control registers and execute _BFS */ - acpi_leave_sleep_state_prep(acpi_state); + acpi_leave_sleep_state_prep(acpi_state, ACPI_NO_OPTIONAL_METHODS); /* ACPI 3.0 specs (P62) says that it's the responsibility * of the OSPM to clear the status bit [ implying that the @@ -534,9 +535,9 @@ static int acpi_hibernation_enter(void) ACPI_FLUSH_CPU_CACHE(); /* This shouldn't return. If it returns, we have a problem */ - status = acpi_enter_sleep_state(ACPI_STATE_S4); + status = acpi_enter_sleep_state(ACPI_STATE_S4, ACPI_NO_OPTIONAL_METHODS); /* Reprogram control registers and execute _BFS */ - acpi_leave_sleep_state_prep(ACPI_STATE_S4); + acpi_leave_sleep_state_prep(ACPI_STATE_S4, ACPI_NO_OPTIONAL_METHODS); return ACPI_SUCCESS(status) ? 0 : -EFAULT; } @@ -549,7 +550,7 @@ static void acpi_hibernation_leave(void) */ acpi_enable(); /* Reprogram control registers and execute _BFS */ - acpi_leave_sleep_state_prep(ACPI_STATE_S4); + acpi_leave_sleep_state_prep(ACPI_STATE_S4, ACPI_NO_OPTIONAL_METHODS); /* Check the hardware signature */ if (facs && s4_hardware_signature != facs->hardware_signature) { printk(KERN_EMERG "ACPI: Hardware changed while hibernated, " @@ -773,7 +774,7 @@ static void acpi_power_off(void) /* acpi_sleep_prepare(ACPI_STATE_S5) should have already been called */ printk(KERN_DEBUG "%s called\n", __func__); local_irq_disable(); - acpi_enter_sleep_state(ACPI_STATE_S5); + acpi_enter_sleep_state(ACPI_STATE_S5, ACPI_NO_OPTIONAL_METHODS); } /* diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index fb8a238115d6..488c986ebe44 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -486,11 +486,11 @@ acpi_get_sleep_type_data(u8 sleep_state, u8 * slp_typ_a, u8 * slp_typ_b); acpi_status acpi_enter_sleep_state_prep(u8 sleep_state); -acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state); +acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state, u8 flags); ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)) -acpi_status acpi_leave_sleep_state_prep(u8 sleep_state); +acpi_status acpi_leave_sleep_state_prep(u8 sleep_state, u8 flags); acpi_status acpi_leave_sleep_state(u8 sleep_state); diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h index 349615833a4a..eba66043cf1b 100644 --- a/include/acpi/actypes.h +++ b/include/acpi/actypes.h @@ -517,6 +517,13 @@ typedef u64 acpi_integer; #define ACPI_SLEEP_TYPE_MAX 0x7 #define ACPI_SLEEP_TYPE_INVALID 0xFF +/* + * Sleep/Wake flags + */ +#define ACPI_NO_OPTIONAL_METHODS 0x00 /* Do not execute any optional methods */ +#define ACPI_EXECUTE_GTS 0x01 /* For enter sleep interface */ +#define ACPI_EXECUTE_BFS 0x02 /* For leave sleep prep interface */ + /* * Standard notify values */ @@ -790,7 +797,7 @@ typedef u8 acpi_adr_space_type; /* Sleep function dispatch */ -typedef acpi_status(*ACPI_SLEEP_FUNCTION) (u8 sleep_state); +typedef acpi_status(*ACPI_SLEEP_FUNCTION) (u8 sleep_state, u8 flags); struct acpi_sleep_functions { ACPI_SLEEP_FUNCTION legacy_function; -- cgit v1.2.3 From 5aa3c16c6b196857ea24ec1c589e3db3c4c64c96 Mon Sep 17 00:00:00 2001 From: Bob Moore Date: Wed, 21 Mar 2012 11:02:24 +0800 Subject: ACPICA: Update to version 20120320 Version 20120320. Signed-off-by: Bob Moore Signed-off-by: Lin Ming Signed-off-by: Len Brown --- include/acpi/acpixf.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/acpi/acpixf.h b/include/acpi/acpixf.h index 488c986ebe44..982110134672 100644 --- a/include/acpi/acpixf.h +++ b/include/acpi/acpixf.h @@ -47,7 +47,7 @@ /* Current ACPICA subsystem version in YYYYMMDD format */ -#define ACPI_CA_VERSION 0x20120215 +#define ACPI_CA_VERSION 0x20120320 #include "acconfig.h" #include "actypes.h" -- cgit v1.2.3 From 0090def6c37c8ea29508a435e581f2ef26fea10f Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Thu, 29 Mar 2012 14:09:39 +0800 Subject: ACPI: Add interface to register/unregister device to/from power resources Devices may share same list of power resources in _PR0, for example Device(Dev0) { Name (_PR0, Package (0x01) { P0PR, P1PR }) } Device(Dev1) { Name (_PR0, Package (0x01) { P0PR, P1PR } } Assume Dev0 and Dev1 were runtime suspended. Then Dev0 is resumed first and it goes into D0 state. But Dev1 is left in D0_Uninitialised state. This is wrong. In this case, Dev1 must be resumed too. In order to hand this case, each power resource maintains a list of devices which relies on it. When power resource is ON, it will check if the devices on its list can be resumed. The device can only be resumed when all the power resouces of its _PR0 are ON. Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/power.c | 162 ++++++++++++++++++++++++++++++++++++++++++++++++ include/acpi/acpi_bus.h | 2 + 2 files changed, 164 insertions(+) (limited to 'include') diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c index 0d681fb7428b..7049a7d27c4f 100644 --- a/drivers/acpi/power.c +++ b/drivers/acpi/power.c @@ -40,9 +40,11 @@ #include #include #include +#include #include #include #include "sleep.h" +#include "internal.h" #define PREFIX "ACPI: " @@ -77,6 +79,20 @@ static struct acpi_driver acpi_power_driver = { }, }; +/* + * A power managed device + * A device may rely on multiple power resources. + * */ +struct acpi_power_managed_device { + struct device *dev; /* The physical device */ + acpi_handle *handle; +}; + +struct acpi_power_resource_device { + struct acpi_power_managed_device *device; + struct acpi_power_resource_device *next; +}; + struct acpi_power_resource { struct acpi_device * device; acpi_bus_id name; @@ -84,6 +100,9 @@ struct acpi_power_resource { u32 order; unsigned int ref_count; struct mutex resource_lock; + + /* List of devices relying on this power resource */ + struct acpi_power_resource_device *devices; }; static struct list_head acpi_power_resource_list; @@ -183,8 +202,26 @@ static int acpi_power_get_list_state(struct acpi_handle_list *list, int *state) return 0; } +/* Resume the device when all power resources in _PR0 are on */ +static void acpi_power_on_device(struct acpi_power_managed_device *device) +{ + struct acpi_device *acpi_dev; + acpi_handle handle = device->handle; + int state; + + if (acpi_bus_get_device(handle, &acpi_dev)) + return; + + if(acpi_power_get_inferred_state(acpi_dev, &state)) + return; + + if (state == ACPI_STATE_D0 && pm_runtime_suspended(device->dev)) + pm_request_resume(device->dev); +} + static int __acpi_power_on(struct acpi_power_resource *resource) { + struct acpi_power_resource_device *device_list = resource->devices; acpi_status status = AE_OK; status = acpi_evaluate_object(resource->device->handle, "_ON", NULL, NULL); @@ -197,6 +234,12 @@ static int __acpi_power_on(struct acpi_power_resource *resource) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Power resource [%s] turned on\n", resource->name)); + while (device_list) { + acpi_power_on_device(device_list->device); + + device_list = device_list->next; + } + return 0; } @@ -299,6 +342,125 @@ static int acpi_power_on_list(struct acpi_handle_list *list) return result; } +static void __acpi_power_resource_unregister_device(struct device *dev, + acpi_handle res_handle) +{ + struct acpi_power_resource *resource = NULL; + struct acpi_power_resource_device *prev, *curr; + + if (acpi_power_get_context(res_handle, &resource)) + return; + + mutex_lock(&resource->resource_lock); + prev = NULL; + curr = resource->devices; + while (curr) { + if (curr->device->dev == dev) { + if (!prev) + resource->devices = curr->next; + else + prev->next = curr->next; + + kfree(curr); + break; + } + + prev = curr; + curr = curr->next; + } + mutex_unlock(&resource->resource_lock); +} + +/* Unlink dev from all power resources in _PR0 */ +void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle) +{ + struct acpi_device *acpi_dev; + struct acpi_handle_list *list; + int i; + + if (!dev || !handle) + return; + + if (acpi_bus_get_device(handle, &acpi_dev)) + return; + + list = &acpi_dev->power.states[ACPI_STATE_D0].resources; + + for (i = 0; i < list->count; i++) + __acpi_power_resource_unregister_device(dev, + list->handles[i]); +} + +static int __acpi_power_resource_register_device( + struct acpi_power_managed_device *powered_device, acpi_handle handle) +{ + struct acpi_power_resource *resource = NULL; + struct acpi_power_resource_device *power_resource_device; + int result; + + result = acpi_power_get_context(handle, &resource); + if (result) + return result; + + power_resource_device = kzalloc( + sizeof(*power_resource_device), GFP_KERNEL); + if (!power_resource_device) + return -ENOMEM; + + power_resource_device->device = powered_device; + + mutex_lock(&resource->resource_lock); + power_resource_device->next = resource->devices; + resource->devices = power_resource_device; + mutex_unlock(&resource->resource_lock); + + return 0; +} + +/* Link dev to all power resources in _PR0 */ +int acpi_power_resource_register_device(struct device *dev, acpi_handle handle) +{ + struct acpi_device *acpi_dev; + struct acpi_handle_list *list; + struct acpi_power_managed_device *powered_device; + int i, ret; + + if (!dev || !handle) + return -ENODEV; + + ret = acpi_bus_get_device(handle, &acpi_dev); + if (ret) + goto no_power_resource; + + if (!acpi_dev->power.flags.power_resources) + goto no_power_resource; + + powered_device = kzalloc(sizeof(*powered_device), GFP_KERNEL); + if (!powered_device) + return -ENOMEM; + + powered_device->dev = dev; + powered_device->handle = handle; + + list = &acpi_dev->power.states[ACPI_STATE_D0].resources; + + for (i = 0; i < list->count; i++) { + ret = __acpi_power_resource_register_device(powered_device, + list->handles[i]); + + if (ret) { + acpi_power_resource_unregister_device(dev, handle); + break; + } + } + + return ret; + +no_power_resource: + printk(KERN_WARNING PREFIX "Invalid Power Resource to register!"); + return -ENODEV; +} + /** * acpi_device_sleep_wake - execute _DSW (Device Sleep Wake) or (deprecated in * ACPI 3.0) _PSW (Power State Wake) diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index 6cd5b6403a7b..e168fffe1db5 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -323,6 +323,8 @@ int acpi_bus_set_power(acpi_handle handle, int state); int acpi_bus_update_power(acpi_handle handle, int *state_p); bool acpi_bus_power_manageable(acpi_handle handle); bool acpi_bus_can_wakeup(acpi_handle handle); +int acpi_power_resource_register_device(struct device *dev, acpi_handle handle); +void acpi_power_resource_unregister_device(struct device *dev, acpi_handle handle); #ifdef CONFIG_ACPI_PROC_EVENT int acpi_bus_generate_proc_event(struct acpi_device *device, u8 type, int data); int acpi_bus_generate_proc_event4(const char *class, const char *bid, u8 type, int data); -- cgit v1.2.3 From 3a53396b0381ec9d5180fd8fe7a681c8ce95fd9a Mon Sep 17 00:00:00 2001 From: ShuoX Liu Date: Wed, 28 Mar 2012 15:19:11 -0700 Subject: cpuidle: add a sysfs entry to disable specific C state for debug purpose. Some C states of new CPU might be not good. One reason is BIOS might configure them incorrectly. To help developers root cause it quickly, the patch adds a new sysfs entry, so developers could disable specific C state manually. In addition, C state might have much impact on performance tuning, as it takes much time to enter/exit C states, which might delay interrupt processing. With the new debug option, developers could check if a deep C state could impact performance and how much impact it could cause. Also add this option in Documentation/cpuidle/sysfs.txt. [akpm@linux-foundation.org: check kstrtol return value] Signed-off-by: ShuoX Liu Reviewed-by: Yanmin Zhang Reviewed-and-Tested-by: Deepthi Dharwar Signed-off-by: Andrew Morton Signed-off-by: Len Brown --- Documentation/cpuidle/sysfs.txt | 5 +++++ drivers/cpuidle/cpuidle.c | 1 + drivers/cpuidle/governors/menu.c | 5 ++++- drivers/cpuidle/sysfs.c | 40 ++++++++++++++++++++++++++++++++++++++++ include/linux/cpuidle.h | 1 + 5 files changed, 51 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/Documentation/cpuidle/sysfs.txt b/Documentation/cpuidle/sysfs.txt index 50d7b1642759..9d28a3406e74 100644 --- a/Documentation/cpuidle/sysfs.txt +++ b/Documentation/cpuidle/sysfs.txt @@ -36,6 +36,7 @@ drwxr-xr-x 2 root root 0 Feb 8 10:42 state3 /sys/devices/system/cpu/cpu0/cpuidle/state0: total 0 -r--r--r-- 1 root root 4096 Feb 8 10:42 desc +-rw-r--r-- 1 root root 4096 Feb 8 10:42 disable -r--r--r-- 1 root root 4096 Feb 8 10:42 latency -r--r--r-- 1 root root 4096 Feb 8 10:42 name -r--r--r-- 1 root root 4096 Feb 8 10:42 power @@ -45,6 +46,7 @@ total 0 /sys/devices/system/cpu/cpu0/cpuidle/state1: total 0 -r--r--r-- 1 root root 4096 Feb 8 10:42 desc +-rw-r--r-- 1 root root 4096 Feb 8 10:42 disable -r--r--r-- 1 root root 4096 Feb 8 10:42 latency -r--r--r-- 1 root root 4096 Feb 8 10:42 name -r--r--r-- 1 root root 4096 Feb 8 10:42 power @@ -54,6 +56,7 @@ total 0 /sys/devices/system/cpu/cpu0/cpuidle/state2: total 0 -r--r--r-- 1 root root 4096 Feb 8 10:42 desc +-rw-r--r-- 1 root root 4096 Feb 8 10:42 disable -r--r--r-- 1 root root 4096 Feb 8 10:42 latency -r--r--r-- 1 root root 4096 Feb 8 10:42 name -r--r--r-- 1 root root 4096 Feb 8 10:42 power @@ -63,6 +66,7 @@ total 0 /sys/devices/system/cpu/cpu0/cpuidle/state3: total 0 -r--r--r-- 1 root root 4096 Feb 8 10:42 desc +-rw-r--r-- 1 root root 4096 Feb 8 10:42 disable -r--r--r-- 1 root root 4096 Feb 8 10:42 latency -r--r--r-- 1 root root 4096 Feb 8 10:42 name -r--r--r-- 1 root root 4096 Feb 8 10:42 power @@ -72,6 +76,7 @@ total 0 * desc : Small description about the idle state (string) +* disable : Option to disable this idle state (bool) * latency : Latency to exit out of this idle state (in microseconds) * name : Name of the idle state (string) * power : Power consumed while in this idle state (in milliwatts) diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index 4869b5500234..77304b6b8aef 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -245,6 +245,7 @@ static void poll_idle_init(struct cpuidle_driver *drv) state->power_usage = -1; state->flags = 0; state->enter = poll_idle; + state->disable = 0; } #else static void poll_idle_init(struct cpuidle_driver *drv) {} diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index ad0952601ae2..5c17ca112fc2 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -280,7 +280,8 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) * We want to default to C1 (hlt), not to busy polling * unless the timer is happening really really soon. */ - if (data->expected_us > 5) + if (data->expected_us > 5 && + drv->states[CPUIDLE_DRIVER_STATE_START].disable == 0) data->last_state_idx = CPUIDLE_DRIVER_STATE_START; /* @@ -290,6 +291,8 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++) { struct cpuidle_state *s = &drv->states[i]; + if (s->disable) + continue; if (s->target_residency > data->predicted_us) continue; if (s->exit_latency > latency_req) diff --git a/drivers/cpuidle/sysfs.c b/drivers/cpuidle/sysfs.c index 3fe41fe4851a..88032b4dc6d2 100644 --- a/drivers/cpuidle/sysfs.c +++ b/drivers/cpuidle/sysfs.c @@ -11,6 +11,7 @@ #include #include #include +#include #include "cpuidle.h" @@ -222,6 +223,9 @@ struct cpuidle_state_attr { #define define_one_state_ro(_name, show) \ static struct cpuidle_state_attr attr_##_name = __ATTR(_name, 0444, show, NULL) +#define define_one_state_rw(_name, show, store) \ +static struct cpuidle_state_attr attr_##_name = __ATTR(_name, 0644, show, store) + #define define_show_state_function(_name) \ static ssize_t show_state_##_name(struct cpuidle_state *state, \ struct cpuidle_state_usage *state_usage, char *buf) \ @@ -229,6 +233,24 @@ static ssize_t show_state_##_name(struct cpuidle_state *state, \ return sprintf(buf, "%u\n", state->_name);\ } +#define define_store_state_function(_name) \ +static ssize_t store_state_##_name(struct cpuidle_state *state, \ + const char *buf, size_t size) \ +{ \ + long value; \ + int err; \ + if (!capable(CAP_SYS_ADMIN)) \ + return -EPERM; \ + err = kstrtol(buf, 0, &value); \ + if (err) \ + return err; \ + if (value) \ + state->disable = 1; \ + else \ + state->disable = 0; \ + return size; \ +} + #define define_show_state_ull_function(_name) \ static ssize_t show_state_##_name(struct cpuidle_state *state, \ struct cpuidle_state_usage *state_usage, char *buf) \ @@ -251,6 +273,8 @@ define_show_state_ull_function(usage) define_show_state_ull_function(time) define_show_state_str_function(name) define_show_state_str_function(desc) +define_show_state_function(disable) +define_store_state_function(disable) define_one_state_ro(name, show_state_name); define_one_state_ro(desc, show_state_desc); @@ -258,6 +282,7 @@ define_one_state_ro(latency, show_state_exit_latency); define_one_state_ro(power, show_state_power_usage); define_one_state_ro(usage, show_state_usage); define_one_state_ro(time, show_state_time); +define_one_state_rw(disable, show_state_disable, store_state_disable); static struct attribute *cpuidle_state_default_attrs[] = { &attr_name.attr, @@ -266,6 +291,7 @@ static struct attribute *cpuidle_state_default_attrs[] = { &attr_power.attr, &attr_usage.attr, &attr_time.attr, + &attr_disable.attr, NULL }; @@ -287,8 +313,22 @@ static ssize_t cpuidle_state_show(struct kobject * kobj, return ret; } +static ssize_t cpuidle_state_store(struct kobject *kobj, + struct attribute *attr, const char *buf, size_t size) +{ + int ret = -EIO; + struct cpuidle_state *state = kobj_to_state(kobj); + struct cpuidle_state_attr *cattr = attr_to_stateattr(attr); + + if (cattr->store) + ret = cattr->store(state, buf, size); + + return ret; +} + static const struct sysfs_ops cpuidle_state_sysfs_ops = { .show = cpuidle_state_show, + .store = cpuidle_state_store, }; static void cpuidle_state_sysfs_release(struct kobject *kobj) diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index 927db28a2a4c..ca4e4983773f 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -46,6 +46,7 @@ struct cpuidle_state { unsigned int exit_latency; /* in US */ unsigned int power_usage; /* in mW */ unsigned int target_residency; /* in US */ + unsigned int disable; int (*enter) (struct cpuidle_device *dev, struct cpuidle_driver *drv, -- cgit v1.2.3 From db70b04407a63668e5fee773f76f90367492fd25 Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Mon, 26 Mar 2012 14:51:27 +0200 Subject: cpuidle: remove useless array definition in cpuidle_structure All the modules name are ro-data, it is never copied to the array. eg. static struct cpuidle_driver intel_idle_driver = { .name = "intel_idle", .owner = THIS_MODULE, }; It safe to assign the pointer of this ro-data to a const char *. By this way we save 12 bytes. Signed-off-by: Daniel Lezcano Acked-by: Deepthi Dharwar Tested-by: Deepthi Dharwar Signed-off-by: Len Brown --- include/linux/cpuidle.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index ca4e4983773f..f7f1d9040da3 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -120,7 +120,7 @@ static inline int cpuidle_get_last_residency(struct cpuidle_device *dev) ****************************/ struct cpuidle_driver { - char name[CPUIDLE_NAME_LEN]; + const char *name; struct module *owner; unsigned int power_specified:1; -- cgit v1.2.3 From e07510585a88c0f6c6c728e2e006aa913496d4ae Mon Sep 17 00:00:00 2001 From: Daniel Lezcano Date: Mon, 26 Mar 2012 14:51:28 +0200 Subject: cpuidle: remove unused 'governor_data' field As far as I can see, this field is never used in the code. Signed-off-by: Daniel Lezcano Signed-off-by: Len Brown --- include/linux/cpuidle.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index f7f1d9040da3..f3ebbba368b3 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -98,7 +98,6 @@ struct cpuidle_device { struct list_head device_list; struct kobject kobj; struct completion kobj_unregister; - void *governor_data; }; DECLARE_PER_CPU(struct cpuidle_device *, cpuidle_devices); -- cgit v1.2.3 From b24e5098853653554baf6ec975b9e855f3d6e5c0 Mon Sep 17 00:00:00 2001 From: Lin Ming Date: Tue, 27 Mar 2012 15:43:25 +0800 Subject: ACPI, PCI: Move acpi_dev_run_wake() to ACPI core acpi_dev_run_wake() is a generic function which can be used by other subsystem too. Rename it to acpi_pm_device_run_wake, to be consistent with acpi_pm_device_sleep_wake. Then move it to ACPI core. Acked-by: Rafael J. Wysocki Signed-off-by: Lin Ming Signed-off-by: Len Brown --- drivers/acpi/sleep.c | 35 +++++++++++++++++++++++++++++++++++ drivers/pci/pci-acpi.c | 40 +++------------------------------------- include/acpi/acpi_bus.h | 5 +++++ 3 files changed, 43 insertions(+), 37 deletions(-) (limited to 'include') diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index ca191ff97844..00fa664d5fd8 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -17,6 +17,7 @@ #include #include #include +#include #include @@ -729,6 +730,40 @@ int acpi_pm_device_sleep_state(struct device *dev, int *d_min_p) #endif /* CONFIG_PM */ #ifdef CONFIG_PM_SLEEP +/** + * acpi_pm_device_run_wake - Enable/disable wake-up for given device. + * @phys_dev: Device to enable/disable the platform to wake-up the system for. + * @enable: Whether enable or disable the wake-up functionality. + * + * Find the ACPI device object corresponding to @pci_dev and try to + * enable/disable the GPE associated with it. + */ +int acpi_pm_device_run_wake(struct device *phys_dev, bool enable) +{ + struct acpi_device *dev; + acpi_handle handle; + + if (!device_run_wake(phys_dev)) + return -EINVAL; + + handle = DEVICE_ACPI_HANDLE(phys_dev); + if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) { + dev_dbg(phys_dev, "ACPI handle has no context in %s!\n", + __func__); + return -ENODEV; + } + + if (enable) { + acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0); + acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number); + } else { + acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number); + acpi_disable_wakeup_device_power(dev); + } + + return 0; +} + /** * acpi_pm_device_sleep_wake - enable or disable the system wake-up * capability of given device diff --git a/drivers/pci/pci-acpi.c b/drivers/pci/pci-acpi.c index 060fd22a1103..0f150f271c2a 100644 --- a/drivers/pci/pci-acpi.c +++ b/drivers/pci/pci-acpi.c @@ -277,40 +277,6 @@ static int acpi_pci_sleep_wake(struct pci_dev *dev, bool enable) return 0; } -/** - * acpi_dev_run_wake - Enable/disable wake-up for given device. - * @phys_dev: Device to enable/disable the platform to wake-up the system for. - * @enable: Whether enable or disable the wake-up functionality. - * - * Find the ACPI device object corresponding to @pci_dev and try to - * enable/disable the GPE associated with it. - */ -static int acpi_dev_run_wake(struct device *phys_dev, bool enable) -{ - struct acpi_device *dev; - acpi_handle handle; - - if (!device_run_wake(phys_dev)) - return -EINVAL; - - handle = DEVICE_ACPI_HANDLE(phys_dev); - if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &dev))) { - dev_dbg(phys_dev, "ACPI handle has no context in %s!\n", - __func__); - return -ENODEV; - } - - if (enable) { - acpi_enable_wakeup_device_power(dev, ACPI_STATE_S0); - acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number); - } else { - acpi_disable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number); - acpi_disable_wakeup_device_power(dev); - } - - return 0; -} - static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable) { while (bus->parent) { @@ -318,14 +284,14 @@ static void acpi_pci_propagate_run_wake(struct pci_bus *bus, bool enable) if (bridge->pme_interrupt) return; - if (!acpi_dev_run_wake(&bridge->dev, enable)) + if (!acpi_pm_device_run_wake(&bridge->dev, enable)) return; bus = bus->parent; } /* We have reached the root bus. */ if (bus->bridge) - acpi_dev_run_wake(bus->bridge, enable); + acpi_pm_device_run_wake(bus->bridge, enable); } static int acpi_pci_run_wake(struct pci_dev *dev, bool enable) @@ -333,7 +299,7 @@ static int acpi_pci_run_wake(struct pci_dev *dev, bool enable) if (dev->pme_interrupt) return 0; - if (!acpi_dev_run_wake(&dev->dev, enable)) + if (!acpi_pm_device_run_wake(&dev->dev, enable)) return 0; acpi_pci_propagate_run_wake(dev->bus, enable); diff --git a/include/acpi/acpi_bus.h b/include/acpi/acpi_bus.h index e168fffe1db5..f1c8ca60e824 100644 --- a/include/acpi/acpi_bus.h +++ b/include/acpi/acpi_bus.h @@ -394,8 +394,13 @@ static inline int acpi_pm_device_sleep_state(struct device *d, int *p) #endif #ifdef CONFIG_PM_SLEEP +int acpi_pm_device_run_wake(struct device *, bool); int acpi_pm_device_sleep_wake(struct device *, bool); #else +static inline int acpi_pm_device_run_wake(struct device *dev, bool enable) +{ + return -ENODEV; +} static inline int acpi_pm_device_sleep_wake(struct device *dev, bool enable) { return -ENODEV; -- cgit v1.2.3 From 1a022e3f1be11730bd8747b1af96a0274bf6356e Mon Sep 17 00:00:00 2001 From: Boris Ostrovsky Date: Tue, 13 Mar 2012 19:55:09 +0100 Subject: idle, x86: Allow off-lined CPU to enter deeper C states Currently when a CPU is off-lined it enters either MWAIT-based idle or, if MWAIT is not desired or supported, HLT-based idle (which places the processor in C1 state). This patch allows processors without MWAIT support to stay in states deeper than C1. Signed-off-by: Boris Ostrovsky Signed-off-by: Len Brown --- arch/x86/kernel/smpboot.c | 4 +++- drivers/acpi/processor_idle.c | 31 +++++++++++++++++++++++++++++++ drivers/cpuidle/cpuidle.c | 28 ++++++++++++++++++++++++++++ include/linux/cpuidle.h | 5 +++++ 4 files changed, 67 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 66d250c00d11..93a2a0932b51 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -50,6 +50,7 @@ #include #include #include +#include #include #include @@ -1422,7 +1423,8 @@ void native_play_dead(void) tboot_shutdown(TB_SHUTDOWN_WFS); mwait_play_dead(); /* Only returns on failure */ - hlt_play_dead(); + if (cpuidle_play_dead()) + hlt_play_dead(); } #else /* ... !CONFIG_HOTPLUG_CPU */ diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 0e8e2de2ed3e..6b1d32a161ae 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -770,6 +770,35 @@ static int acpi_idle_enter_c1(struct cpuidle_device *dev, return index; } + +/** + * acpi_idle_play_dead - enters an ACPI state for long-term idle (i.e. off-lining) + * @dev: the target CPU + * @index: the index of suggested state + */ +static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) +{ + struct cpuidle_state_usage *state_usage = &dev->states_usage[index]; + struct acpi_processor_cx *cx = cpuidle_get_statedata(state_usage); + + ACPI_FLUSH_CPU_CACHE(); + + while (1) { + + if (cx->entry_method == ACPI_CSTATE_HALT) + halt(); + else if (cx->entry_method == ACPI_CSTATE_SYSTEMIO) { + inb(cx->address); + /* See comment in acpi_idle_do_entry() */ + inl(acpi_gbl_FADT.xpm_timer_block.address); + } else + return -ENODEV; + } + + /* Never reached */ + return 0; +} + /** * acpi_idle_enter_simple - enters an ACPI state without BM handling * @dev: the target CPU @@ -1077,12 +1106,14 @@ static int acpi_processor_setup_cpuidle_states(struct acpi_processor *pr) state->flags |= CPUIDLE_FLAG_TIME_VALID; state->enter = acpi_idle_enter_c1; + state->enter_dead = acpi_idle_play_dead; drv->safe_state_index = count; break; case ACPI_STATE_C2: state->flags |= CPUIDLE_FLAG_TIME_VALID; state->enter = acpi_idle_enter_simple; + state->enter_dead = acpi_idle_play_dead; drv->safe_state_index = count; break; diff --git a/drivers/cpuidle/cpuidle.c b/drivers/cpuidle/cpuidle.c index f7cab5e9c4d6..3e146b2ada4a 100644 --- a/drivers/cpuidle/cpuidle.c +++ b/drivers/cpuidle/cpuidle.c @@ -71,6 +71,34 @@ typedef int (*cpuidle_enter_t)(struct cpuidle_device *dev, static cpuidle_enter_t cpuidle_enter_ops; +/** + * cpuidle_play_dead - cpu off-lining + * + * Only returns in case of an error + */ +int cpuidle_play_dead(void) +{ + struct cpuidle_device *dev = __this_cpu_read(cpuidle_devices); + struct cpuidle_driver *drv = cpuidle_get_driver(); + int i, dead_state = -1; + int power_usage = -1; + + /* Find lowest-power state that supports long-term idle */ + for (i = CPUIDLE_DRIVER_STATE_START; i < drv->state_count; i++) { + struct cpuidle_state *s = &drv->states[i]; + + if (s->power_usage < power_usage && s->enter_dead) { + power_usage = s->power_usage; + dead_state = i; + } + } + + if (dead_state != -1) + return drv->states[dead_state].enter_dead(dev, dead_state); + + return -ENODEV; +} + /** * cpuidle_idle_call - the main idle loop * diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index f3ebbba368b3..d557bcd0ada7 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -51,6 +51,8 @@ struct cpuidle_state { int (*enter) (struct cpuidle_device *dev, struct cpuidle_driver *drv, int index); + + int (*enter_dead) (struct cpuidle_device *dev, int index); }; /* Idle State Flags */ @@ -147,6 +149,8 @@ extern int cpuidle_wrap_enter(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index, int (*enter)(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index)); +extern int cpuidle_play_dead(void); + #else static inline void disable_cpuidle(void) { } static inline int cpuidle_idle_call(void) { return -ENODEV; } @@ -168,6 +172,7 @@ static inline int cpuidle_wrap_enter(struct cpuidle_device *dev, int (*enter)(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index)) { return -ENODEV; } +static inline int cpuidle_play_dead(void) {return -ENODEV; } #endif -- cgit v1.2.3 From 02401c06b7f6bec65f314e3cec7894502c973501 Mon Sep 17 00:00:00 2001 From: Boris Ostrovsky Date: Tue, 13 Mar 2012 19:55:10 +0100 Subject: cpuidle: power_usage should be declared signed integer power_usage is always assigned a negative value and should be declared a signed integer Signed-off-by: Boris Ostrovsky Signed-off-by: Len Brown --- drivers/cpuidle/governors/menu.c | 2 +- include/linux/cpuidle.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) (limited to 'include') diff --git a/drivers/cpuidle/governors/menu.c b/drivers/cpuidle/governors/menu.c index 5c17ca112fc2..06335756ea14 100644 --- a/drivers/cpuidle/governors/menu.c +++ b/drivers/cpuidle/governors/menu.c @@ -236,7 +236,7 @@ static int menu_select(struct cpuidle_driver *drv, struct cpuidle_device *dev) { struct menu_device *data = &__get_cpu_var(menu_devices); int latency_req = pm_qos_request(PM_QOS_CPU_DMA_LATENCY); - unsigned int power_usage = -1; + int power_usage = -1; int i; int multiplier; struct timespec t; diff --git a/include/linux/cpuidle.h b/include/linux/cpuidle.h index d557bcd0ada7..6c26a3da0e03 100644 --- a/include/linux/cpuidle.h +++ b/include/linux/cpuidle.h @@ -44,7 +44,7 @@ struct cpuidle_state { unsigned int flags; unsigned int exit_latency; /* in US */ - unsigned int power_usage; /* in mW */ + int power_usage; /* in mW */ unsigned int target_residency; /* in US */ unsigned int disable; -- cgit v1.2.3