diff options
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/apei/Kconfig | 9 | ||||
-rw-r--r-- | drivers/acpi/apei/Makefile | 1 | ||||
-rw-r--r-- | drivers/acpi/apei/apei-base.c | 4 | ||||
-rw-r--r-- | drivers/acpi/apei/erst-dbg.c | 207 | ||||
-rw-r--r-- | drivers/acpi/apei/ghes.c | 172 | ||||
-rw-r--r-- | drivers/acpi/apei/hest.c | 76 | ||||
-rw-r--r-- | drivers/acpi/sleep.c | 60 | ||||
-rw-r--r-- | drivers/acpi/sleep.h | 5 | ||||
-rw-r--r-- | drivers/acpi/wakeup.c | 48 |
9 files changed, 413 insertions, 169 deletions
diff --git a/drivers/acpi/apei/Kconfig b/drivers/acpi/apei/Kconfig index f8c668f..907e350 100644 --- a/drivers/acpi/apei/Kconfig +++ b/drivers/acpi/apei/Kconfig @@ -28,3 +28,12 @@ config ACPI_APEI_EINJ EINJ provides a hardware error injection mechanism, it is mainly used for debugging and testing the other parts of APEI and some other RAS features. + +config ACPI_APEI_ERST_DEBUG + tristate "APEI Error Record Serialization Table (ERST) Debug Support" + depends on ACPI_APEI + help + ERST is a way provided by APEI to save and retrieve hardware + error infomation to and from a persistent store. Enable this + if you want to debugging and testing the ERST kernel support + and firmware implementation. diff --git a/drivers/acpi/apei/Makefile b/drivers/acpi/apei/Makefile index b13b03a..d1d1bc0 100644 --- a/drivers/acpi/apei/Makefile +++ b/drivers/acpi/apei/Makefile @@ -1,5 +1,6 @@ obj-$(CONFIG_ACPI_APEI) += apei.o obj-$(CONFIG_ACPI_APEI_GHES) += ghes.o obj-$(CONFIG_ACPI_APEI_EINJ) += einj.o +obj-$(CONFIG_ACPI_APEI_ERST_DEBUG) += erst-dbg.o apei-y := apei-base.o hest.o cper.o erst.o diff --git a/drivers/acpi/apei/apei-base.c b/drivers/acpi/apei/apei-base.c index 216e1e9..73fd0c7 100644 --- a/drivers/acpi/apei/apei-base.c +++ b/drivers/acpi/apei/apei-base.c @@ -482,14 +482,14 @@ err_unmap_ioport: list_for_each_entry(res, &resources->ioport, list) { if (res == res_bak) break; - release_mem_region(res->start, res->end - res->start); + release_region(res->start, res->end - res->start); } res_bak = NULL; err_unmap_iomem: list_for_each_entry(res, &resources->iomem, list) { if (res == res_bak) break; - release_region(res->start, res->end - res->start); + release_mem_region(res->start, res->end - res->start); } return -EINVAL; } diff --git a/drivers/acpi/apei/erst-dbg.c b/drivers/acpi/apei/erst-dbg.c new file mode 100644 index 0000000..5281ddd --- /dev/null +++ b/drivers/acpi/apei/erst-dbg.c @@ -0,0 +1,207 @@ +/* + * APEI Error Record Serialization Table debug support + * + * ERST is a way provided by APEI to save and retrieve hardware error + * infomation to and from a persistent store. This file provide the + * debugging/testing support for ERST kernel support and firmware + * implementation. + * + * Copyright 2010 Intel Corp. + * Author: Huang Ying <ying.huang@intel.com> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License version + * 2 as published by the Free Software Foundation. + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/uaccess.h> +#include <acpi/apei.h> +#include <linux/miscdevice.h> + +#include "apei-internal.h" + +#define ERST_DBG_PFX "ERST DBG: " + +#define ERST_DBG_RECORD_LEN_MAX 4096 + +static void *erst_dbg_buf; +static unsigned int erst_dbg_buf_len; + +/* Prevent erst_dbg_read/write from being invoked concurrently */ +static DEFINE_MUTEX(erst_dbg_mutex); + +static int erst_dbg_open(struct inode *inode, struct file *file) +{ + if (erst_disable) + return -ENODEV; + + return nonseekable_open(inode, file); +} + +static long erst_dbg_ioctl(struct file *f, unsigned int cmd, unsigned long arg) +{ + int rc; + u64 record_id; + u32 record_count; + + switch (cmd) { + case APEI_ERST_CLEAR_RECORD: + rc = copy_from_user(&record_id, (void __user *)arg, + sizeof(record_id)); + if (rc) + return -EFAULT; + return erst_clear(record_id); + case APEI_ERST_GET_RECORD_COUNT: + rc = erst_get_record_count(); + if (rc < 0) + return rc; + record_count = rc; + rc = put_user(record_count, (u32 __user *)arg); + if (rc) + return rc; + return 0; + default: + return -ENOTTY; + } +} + +static ssize_t erst_dbg_read(struct file *filp, char __user *ubuf, + size_t usize, loff_t *off) +{ + int rc; + ssize_t len = 0; + u64 id; + + if (*off != 0) + return -EINVAL; + + if (mutex_lock_interruptible(&erst_dbg_mutex) != 0) + return -EINTR; + +retry_next: + rc = erst_get_next_record_id(&id); + if (rc) + goto out; + /* no more record */ + if (id == APEI_ERST_INVALID_RECORD_ID) + goto out; +retry: + rc = len = erst_read(id, erst_dbg_buf, erst_dbg_buf_len); + /* The record may be cleared by others, try read next record */ + if (rc == -ENOENT) + goto retry_next; + if (rc < 0) + goto out; + if (len > ERST_DBG_RECORD_LEN_MAX) { + pr_warning(ERST_DBG_PFX + "Record (ID: 0x%llx) length is too long: %zd\n", + id, len); + rc = -EIO; + goto out; + } + if (len > erst_dbg_buf_len) { + kfree(erst_dbg_buf); + rc = -ENOMEM; + erst_dbg_buf = kmalloc(len, GFP_KERNEL); + if (!erst_dbg_buf) + goto out; + erst_dbg_buf_len = len; + goto retry; + } + + rc = -EINVAL; + if (len > usize) + goto out; + + rc = -EFAULT; + if (copy_to_user(ubuf, erst_dbg_buf, len)) + goto out; + rc = 0; +out: + mutex_unlock(&erst_dbg_mutex); + return rc ? rc : len; +} + +static ssize_t erst_dbg_write(struct file *filp, const char __user *ubuf, + size_t usize, loff_t *off) +{ + int rc; + struct cper_record_header *rcd; + + if (!capable(CAP_SYS_ADMIN)) + return -EPERM; + + if (usize > ERST_DBG_RECORD_LEN_MAX) { + pr_err(ERST_DBG_PFX "Too long record to be written\n"); + return -EINVAL; + } + + if (mutex_lock_interruptible(&erst_dbg_mutex)) + return -EINTR; + if (usize > erst_dbg_buf_len) { + kfree(erst_dbg_buf); + rc = -ENOMEM; + erst_dbg_buf = kmalloc(usize, GFP_KERNEL); + if (!erst_dbg_buf) + goto out; + erst_dbg_buf_len = usize; + } + rc = copy_from_user(erst_dbg_buf, ubuf, usize); + if (rc) { + rc = -EFAULT; + goto out; + } + rcd = erst_dbg_buf; + rc = -EINVAL; + if (rcd->record_length != usize) + goto out; + + rc = erst_write(erst_dbg_buf); + +out: + mutex_unlock(&erst_dbg_mutex); + return rc < 0 ? rc : usize; +} + +static const struct file_operations erst_dbg_ops = { + .owner = THIS_MODULE, + .open = erst_dbg_open, + .read = erst_dbg_read, + .write = erst_dbg_write, + .unlocked_ioctl = erst_dbg_ioctl, +}; + +static struct miscdevice erst_dbg_dev = { + .minor = MISC_DYNAMIC_MINOR, + .name = "erst_dbg", + .fops = &erst_dbg_ops, +}; + +static __init int erst_dbg_init(void) +{ + return misc_register(&erst_dbg_dev); +} + +static __exit void erst_dbg_exit(void) +{ + misc_deregister(&erst_dbg_dev); + kfree(erst_dbg_buf); +} + +module_init(erst_dbg_init); +module_exit(erst_dbg_exit); + +MODULE_AUTHOR("Huang Ying"); +MODULE_DESCRIPTION("APEI Error Record Serialization Table debug support"); +MODULE_LICENSE("GPL"); diff --git a/drivers/acpi/apei/ghes.c b/drivers/acpi/apei/ghes.c index fd0cc01..385a605 100644 --- a/drivers/acpi/apei/ghes.c +++ b/drivers/acpi/apei/ghes.c @@ -41,6 +41,8 @@ #include <linux/interrupt.h> #include <linux/cper.h> #include <linux/kdebug.h> +#include <linux/platform_device.h> +#include <linux/mutex.h> #include <acpi/apei.h> #include <acpi/atomicio.h> #include <acpi/hed.h> @@ -87,6 +89,7 @@ struct ghes { * used for that. */ static LIST_HEAD(ghes_sci); +static DEFINE_MUTEX(ghes_list_mutex); static struct ghes *ghes_new(struct acpi_hest_generic *generic) { @@ -132,26 +135,26 @@ static void ghes_fini(struct ghes *ghes) } enum { - GHES_SER_NO = 0x0, - GHES_SER_CORRECTED = 0x1, - GHES_SER_RECOVERABLE = 0x2, - GHES_SER_PANIC = 0x3, + GHES_SEV_NO = 0x0, + GHES_SEV_CORRECTED = 0x1, + GHES_SEV_RECOVERABLE = 0x2, + GHES_SEV_PANIC = 0x3, }; static inline int ghes_severity(int severity) { switch (severity) { - case CPER_SER_INFORMATIONAL: - return GHES_SER_NO; - case CPER_SER_CORRECTED: - return GHES_SER_CORRECTED; - case CPER_SER_RECOVERABLE: - return GHES_SER_RECOVERABLE; - case CPER_SER_FATAL: - return GHES_SER_PANIC; + case CPER_SEV_INFORMATIONAL: + return GHES_SEV_NO; + case CPER_SEV_CORRECTED: + return GHES_SEV_CORRECTED; + case CPER_SEV_RECOVERABLE: + return GHES_SEV_RECOVERABLE; + case CPER_SEV_FATAL: + return GHES_SEV_PANIC; default: /* Unkown, go panic */ - return GHES_SER_PANIC; + return GHES_SEV_PANIC; } } @@ -237,16 +240,16 @@ static void ghes_clear_estatus(struct ghes *ghes) static void ghes_do_proc(struct ghes *ghes) { - int ser, processed = 0; + int sev, processed = 0; struct acpi_hest_generic_data *gdata; - ser = ghes_severity(ghes->estatus->error_severity); + sev = ghes_severity(ghes->estatus->error_severity); apei_estatus_for_each_section(ghes->estatus, gdata) { #ifdef CONFIG_X86_MCE if (!uuid_le_cmp(*(uuid_le *)gdata->section_type, CPER_SEC_PLATFORM_MEM)) { apei_mce_report_mem_error( - ser == GHES_SER_CORRECTED, + sev == GHES_SEV_CORRECTED, (struct cper_sec_mem_err *)(gdata+1)); processed = 1; } @@ -293,18 +296,15 @@ static struct notifier_block ghes_notifier_sci = { .notifier_call = ghes_notify_sci, }; -static int hest_ghes_parse(struct acpi_hest_header *hest_hdr, void *data) +static int __devinit ghes_probe(struct platform_device *ghes_dev) { struct acpi_hest_generic *generic; struct ghes *ghes = NULL; - int rc = 0; + int rc = -EINVAL; - if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR) - return 0; - - generic = (struct acpi_hest_generic *)hest_hdr; + generic = ghes_dev->dev.platform_data; if (!generic->enabled) - return 0; + return -ENODEV; if (generic->error_block_length < sizeof(struct acpi_hest_generic_status)) { @@ -327,62 +327,91 @@ static int hest_ghes_parse(struct acpi_hest_header *hest_hdr, void *data) ghes = NULL; goto err; } - switch (generic->notify.type) { - case ACPI_HEST_NOTIFY_POLLED: - pr_warning(GHES_PFX -"Generic hardware error source: %d notified via POLL is not supported!\n", - generic->header.source_id); - break; - case ACPI_HEST_NOTIFY_EXTERNAL: - case ACPI_HEST_NOTIFY_LOCAL: - pr_warning(GHES_PFX -"Generic hardware error source: %d notified via IRQ is not supported!\n", - generic->header.source_id); - break; - case ACPI_HEST_NOTIFY_SCI: + if (generic->notify.type == ACPI_HEST_NOTIFY_SCI) { + mutex_lock(&ghes_list_mutex); if (list_empty(&ghes_sci)) register_acpi_hed_notifier(&ghes_notifier_sci); list_add_rcu(&ghes->list, &ghes_sci); - break; - case ACPI_HEST_NOTIFY_NMI: - pr_warning(GHES_PFX -"Generic hardware error source: %d notified via NMI is not supported!\n", - generic->header.source_id); - break; - default: - pr_warning(FW_WARN GHES_PFX - "Unknown notification type: %u for generic hardware error source: %d\n", - generic->notify.type, generic->header.source_id); - break; + mutex_unlock(&ghes_list_mutex); + } else { + unsigned char *notify = NULL; + + switch (generic->notify.type) { + case ACPI_HEST_NOTIFY_POLLED: + notify = "POLL"; + break; + case ACPI_HEST_NOTIFY_EXTERNAL: + case ACPI_HEST_NOTIFY_LOCAL: + notify = "IRQ"; + break; + case ACPI_HEST_NOTIFY_NMI: + notify = "NMI"; + break; + } + if (notify) { + pr_warning(GHES_PFX +"Generic hardware error source: %d notified via %s is not supported!\n", + generic->header.source_id, notify); + } else { + pr_warning(FW_WARN GHES_PFX +"Unknown notification type: %u for generic hardware error source: %d\n", + generic->notify.type, generic->header.source_id); + } + rc = -ENODEV; + goto err; } + platform_set_drvdata(ghes_dev, ghes); return 0; err: - if (ghes) + if (ghes) { ghes_fini(ghes); + kfree(ghes); + } return rc; } -static void ghes_cleanup(void) +static int __devexit ghes_remove(struct platform_device *ghes_dev) { - struct ghes *ghes, *nghes; + struct ghes *ghes; + struct acpi_hest_generic *generic; - if (!list_empty(&ghes_sci)) - unregister_acpi_hed_notifier(&ghes_notifier_sci); + ghes = platform_get_drvdata(ghes_dev); + generic = ghes->generic; + + switch (generic->notify.type) { + case ACPI_HEST_NOTIFY_SCI: + mutex_lock(&ghes_list_mutex); + list_del_rcu(&ghes->list); + if (list_empty(&ghes_sci)) + unregister_acpi_hed_notifier(&ghes_notifier_sci); + mutex_unlock(&ghes_list_mutex); + break; + default: + BUG(); + break; + } synchronize_rcu(); + ghes_fini(ghes); + kfree(ghes); - list_for_each_entry_safe(ghes, nghes, &ghes_sci, list) { - list_del(&ghes->list); - ghes_fini(ghes); - kfree(ghes); - } + platform_set_drvdata(ghes_dev, NULL); + + return 0; } +static struct platform_driver ghes_platform_driver = { + .driver = { + .name = "GHES", + .owner = THIS_MODULE, + }, + .probe = ghes_probe, + .remove = ghes_remove, +}; + static int __init ghes_init(void) { - int rc; - if (acpi_disabled) return -ENODEV; @@ -391,32 +420,12 @@ static int __init ghes_init(void) return -EINVAL; } - rc = apei_hest_parse(hest_ghes_parse, NULL); - if (rc) { - pr_err(GHES_PFX - "Error during parsing HEST generic hardware error sources.\n"); - goto err_cleanup; - } - - if (list_empty(&ghes_sci)) { - pr_info(GHES_PFX - "No functional generic hardware error sources.\n"); - rc = -ENODEV; - goto err_cleanup; - } - - pr_info(GHES_PFX - "Generic Hardware Error Source support is initialized.\n"); - - return 0; -err_cleanup: - ghes_cleanup(); - return rc; + return platform_driver_register(&ghes_platform_driver); } static void __exit ghes_exit(void) { - ghes_cleanup(); + platform_driver_unregister(&ghes_platform_driver); } module_init(ghes_init); @@ -425,3 +434,4 @@ module_exit(ghes_exit); MODULE_AUTHOR("Huang Ying"); MODULE_DESCRIPTION("APEI Generic Hardware Error Source support"); MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:GHES"); diff --git a/drivers/acpi/apei/hest.c b/drivers/acpi/apei/hest.c index e7f40d3..343168d 100644 --- a/drivers/acpi/apei/hest.c +++ b/drivers/acpi/apei/hest.c @@ -34,6 +34,7 @@ #include <linux/kdebug.h> #include <linux/highmem.h> #include <linux/io.h> +#include <linux/platform_device.h> #include <acpi/apei.h> #include "apei-internal.h" @@ -47,11 +48,6 @@ EXPORT_SYMBOL_GPL(hest_disable); static struct acpi_table_hest *hest_tab; -static int hest_void_parse(struct acpi_hest_header *hest_hdr, void *data) -{ - return 0; -} - static int hest_esrc_len_tab[ACPI_HEST_TYPE_RESERVED] = { [ACPI_HEST_TYPE_IA32_CHECK] = -1, /* need further calculation */ [ACPI_HEST_TYPE_IA32_CORRECTED_CHECK] = -1, @@ -125,6 +121,69 @@ int apei_hest_parse(apei_hest_func_t func, void *data) } EXPORT_SYMBOL_GPL(apei_hest_parse); +struct ghes_arr { + struct platform_device **ghes_devs; + unsigned int count; +}; + +static int hest_parse_ghes_count(struct acpi_hest_header *hest_hdr, void *data) +{ + int *count = data; + + if (hest_hdr->type == ACPI_HEST_TYPE_GENERIC_ERROR) + (*count)++; + return 0; +} + +static int hest_parse_ghes(struct acpi_hest_header *hest_hdr, void *data) +{ + struct acpi_hest_generic *generic; + struct platform_device *ghes_dev; + struct ghes_arr *ghes_arr = data; + int rc; + + if (hest_hdr->type != ACPI_HEST_TYPE_GENERIC_ERROR) + return 0; + generic = (struct acpi_hest_generic *)hest_hdr; + if (!generic->enabled) + return 0; + ghes_dev = platform_device_alloc("GHES", hest_hdr->source_id); + if (!ghes_dev) + return -ENOMEM; + ghes_dev->dev.platform_data = generic; + rc = platform_device_add(ghes_dev); + if (rc) + goto err; + ghes_arr->ghes_devs[ghes_arr->count++] = ghes_dev; + + return 0; +err: + platform_device_put(ghes_dev); + return rc; +} + +static int hest_ghes_dev_register(unsigned int ghes_count) +{ + int rc, i; + struct ghes_arr ghes_arr; + + ghes_arr.count = 0; + ghes_arr.ghes_devs = kmalloc(sizeof(void *) * ghes_count, GFP_KERNEL); + if (!ghes_arr.ghes_devs) + return -ENOMEM; + + rc = apei_hest_parse(hest_parse_ghes, &ghes_arr); + if (rc) + goto err; +out: + kfree(ghes_arr.ghes_devs); + return rc; +err: + for (i = 0; i < ghes_arr.count; i++) + platform_device_unregister(ghes_arr.ghes_devs[i]); + goto out; +} + static int __init setup_hest_disable(char *str) { hest_disable = 1; @@ -137,6 +196,7 @@ static int __init hest_init(void) { acpi_status status; int rc = -ENODEV; + unsigned int ghes_count = 0; if (acpi_disabled) goto err; @@ -158,7 +218,11 @@ static int __init hest_init(void) goto err; } - rc = apei_hest_parse(hest_void_parse, NULL); + rc = apei_hest_parse(hest_parse_ghes_count, &ghes_count); + if (rc) + goto err; + + rc = hest_ghes_dev_register(ghes_count); if (rc) goto err; diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index 2862c78..e4625f9 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -70,10 +70,10 @@ static int acpi_sleep_prepare(u32 acpi_state) } ACPI_FLUSH_CPU_CACHE(); - acpi_enable_wakeup_device_prep(acpi_state); #endif printk(KERN_INFO PREFIX "Preparing to enter system sleep state S%d\n", acpi_state); + acpi_enable_wakeup_devices(acpi_state); acpi_enter_sleep_state_prep(acpi_state); return 0; } @@ -119,6 +119,16 @@ static int acpi_pm_freeze(void) } /** + * acpi_pre_suspend - Enable wakeup devices, "freeze" EC and save NVS. + */ +static int acpi_pm_pre_suspend(void) +{ + acpi_pm_freeze(); + suspend_nvs_save(); + return 0; +} + +/** * __acpi_pm_prepare - Prepare the platform to enter the target state. * * If necessary, set the firmware waking vector and do arch-specific @@ -127,11 +137,9 @@ static int acpi_pm_freeze(void) static int __acpi_pm_prepare(void) { int error = acpi_sleep_prepare(acpi_target_sleep_state); - - suspend_nvs_save(); - if (error) acpi_target_sleep_state = ACPI_STATE_S0; + return error; } @@ -142,9 +150,8 @@ static int __acpi_pm_prepare(void) static int acpi_pm_prepare(void) { int error = __acpi_pm_prepare(); - if (!error) - acpi_pm_freeze(); + acpi_pm_pre_suspend(); return error; } @@ -159,7 +166,6 @@ static void acpi_pm_finish(void) { u32 acpi_state = acpi_target_sleep_state; - suspend_nvs_free(); acpi_ec_unblock_transactions(); if (acpi_state == ACPI_STATE_S0) @@ -167,7 +173,7 @@ static void acpi_pm_finish(void) printk(KERN_INFO PREFIX "Waking up from system sleep state S%d\n", acpi_state); - acpi_disable_wakeup_device(acpi_state); + acpi_disable_wakeup_devices(acpi_state); acpi_leave_sleep_state(acpi_state); /* reset firmware waking vector */ @@ -181,6 +187,7 @@ static void acpi_pm_finish(void) */ static void acpi_pm_end(void) { + suspend_nvs_free(); /* * This is necessary in case acpi_pm_finish() is not called during a * failing transition to a sleep state. @@ -251,7 +258,6 @@ static int acpi_suspend_enter(suspend_state_t pm_state) } local_irq_save(flags); - acpi_enable_wakeup_device(acpi_state); switch (acpi_state) { case ACPI_STATE_S1: barrier(); @@ -297,11 +303,6 @@ static int acpi_suspend_enter(suspend_state_t pm_state) return ACPI_SUCCESS(status) ? 0 : -EFAULT; } -static void acpi_suspend_finish(void) -{ - acpi_pm_finish(); -} - static int acpi_suspend_state_valid(suspend_state_t pm_state) { u32 acpi_state; @@ -323,7 +324,7 @@ static struct platform_suspend_ops acpi_suspend_ops = { .begin = acpi_suspend_begin, .prepare_late = acpi_pm_prepare, .enter = acpi_suspend_enter, - .wake = acpi_suspend_finish, + .wake = acpi_pm_finish, .end = acpi_pm_end, }; @@ -336,9 +337,9 @@ static struct platform_suspend_ops acpi_suspend_ops = { static int acpi_suspend_begin_old(suspend_state_t pm_state) { int error = acpi_suspend_begin(pm_state); - if (!error) error = __acpi_pm_prepare(); + return error; } @@ -349,9 +350,9 @@ static int acpi_suspend_begin_old(suspend_state_t pm_state) static struct platform_suspend_ops acpi_suspend_ops_old = { .valid = acpi_suspend_state_valid, .begin = acpi_suspend_begin_old, - .prepare_late = acpi_pm_freeze, + .prepare_late = acpi_pm_pre_suspend, .enter = acpi_suspend_enter, - .wake = acpi_suspend_finish, + .wake = acpi_pm_finish, .end = acpi_pm_end, .recover = acpi_pm_finish, }; @@ -423,16 +424,6 @@ static int acpi_hibernation_begin(void) return error; } -static int acpi_hibernation_pre_snapshot(void) -{ - int error = acpi_pm_prepare(); - - if (!error) - suspend_nvs_save(); - - return error; -} - static int acpi_hibernation_enter(void) { acpi_status status = AE_OK; @@ -441,7 +432,6 @@ static int acpi_hibernation_enter(void) ACPI_FLUSH_CPU_CACHE(); local_irq_save(flags); - acpi_enable_wakeup_device(ACPI_STATE_S4); /* This shouldn't return. If it returns, we have a problem */ status = acpi_enter_sleep_state(ACPI_STATE_S4); /* Reprogram control registers and execute _BFS */ @@ -481,7 +471,7 @@ static void acpi_pm_thaw(void) static struct platform_hibernation_ops acpi_hibernation_ops = { .begin = acpi_hibernation_begin, .end = acpi_pm_end, - .pre_snapshot = acpi_hibernation_pre_snapshot, + .pre_snapshot = acpi_pm_prepare, .finish = acpi_pm_finish, .prepare = acpi_pm_prepare, .enter = acpi_hibernation_enter, @@ -517,13 +507,6 @@ static int acpi_hibernation_begin_old(void) return error; } -static int acpi_hibernation_pre_snapshot_old(void) -{ - acpi_pm_freeze(); - suspend_nvs_save(); - return 0; -} - /* * The following callbacks are used if the pre-ACPI 2.0 suspend ordering has * been requested. @@ -531,7 +514,7 @@ static int acpi_hibernation_pre_snapshot_old(void) static struct platform_hibernation_ops acpi_hibernation_ops_old = { .begin = acpi_hibernation_begin_old, .end = acpi_pm_end, - .pre_snapshot = acpi_hibernation_pre_snapshot_old, + .pre_snapshot = acpi_pm_pre_suspend, .prepare = acpi_pm_freeze, .finish = acpi_pm_finish, .enter = acpi_hibernation_enter, @@ -695,7 +678,6 @@ 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_enable_wakeup_device(ACPI_STATE_S5); acpi_enter_sleep_state(ACPI_STATE_S5); } diff --git a/drivers/acpi/sleep.h b/drivers/acpi/sleep.h index 25b8bd1..d882180 100644 --- a/drivers/acpi/sleep.h +++ b/drivers/acpi/sleep.h @@ -2,9 +2,8 @@ extern u8 sleep_states[]; extern int acpi_suspend(u32 state); -extern void acpi_enable_wakeup_device_prep(u8 sleep_state); -extern void acpi_enable_wakeup_device(u8 sleep_state); -extern void acpi_disable_wakeup_device(u8 sleep_state); +extern void acpi_enable_wakeup_devices(u8 sleep_state); +extern void acpi_disable_wakeup_devices(u8 sleep_state); extern struct list_head acpi_wakeup_device_list; extern struct mutex acpi_device_lock; diff --git a/drivers/acpi/wakeup.c b/drivers/acpi/wakeup.c index 388747a..dc6d1d9 100644 --- a/drivers/acpi/wakeup.c +++ b/drivers/acpi/wakeup.c @@ -21,46 +21,18 @@ ACPI_MODULE_NAME("wakeup_devices") /** - * acpi_enable_wakeup_device_prep - Prepare wake-up devices. + * acpi_enable_wakeup_devices - Enable wake-up device GPEs. * @sleep_state: ACPI system sleep state. * - * Enable all wake-up devices' power, unless the requested system sleep state is - * too deep. + * Enable wakeup device power of devices with the state.enable flag set and set + * the wakeup enable mask bits in the GPE registers that correspond to wakeup + * devices. */ -void acpi_enable_wakeup_device_prep(u8 sleep_state) +void acpi_enable_wakeup_devices(u8 sleep_state) { struct list_head *node, *next; list_for_each_safe(node, next, &acpi_wakeup_device_list) { - struct acpi_device *dev = container_of(node, - struct acpi_device, - wakeup_list); - - if (!dev->wakeup.flags.valid || !dev->wakeup.state.enabled - || (sleep_state > (u32) dev->wakeup.sleep_state)) - continue; - - acpi_enable_wakeup_device_power(dev, sleep_state); - } -} - -/** - * acpi_enable_wakeup_device - Enable wake-up device GPEs. - * @sleep_state: ACPI system sleep state. - * - * Enable all wake-up devices' GPEs, with the assumption that - * acpi_disable_all_gpes() was executed before, so we don't need to disable any - * GPEs here. - */ -void acpi_enable_wakeup_device(u8 sleep_state) -{ - struct list_head *node, *next; - - /* - * Caution: this routine must be invoked when interrupt is disabled - * Refer ACPI2.0: P212 - */ - list_for_each_safe(node, next, &acpi_wakeup_device_list) { struct acpi_device *dev = container_of(node, struct acpi_device, wakeup_list); @@ -68,6 +40,9 @@ void acpi_enable_wakeup_device(u8 sleep_state) || sleep_state > (u32) dev->wakeup.sleep_state) continue; + if (dev->wakeup.state.enabled) + acpi_enable_wakeup_device_power(dev, sleep_state); + /* The wake-up power should have been enabled already. */ acpi_enable_gpe(dev->wakeup.gpe_device, dev->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE); @@ -75,13 +50,10 @@ void acpi_enable_wakeup_device(u8 sleep_state) } /** - * acpi_disable_wakeup_device - Disable devices' wakeup capability. + * acpi_disable_wakeup_devices - Disable devices' wakeup capability. * @sleep_state: ACPI system sleep state. - * - * This function only affects devices with wakeup.state.enabled set, which means - * that it reverses the changes made by acpi_enable_wakeup_device_prep(). */ -void acpi_disable_wakeup_device(u8 sleep_state) +void acpi_disable_wakeup_devices(u8 sleep_state) { struct list_head *node, *next; |