diff options
Diffstat (limited to 'drivers/acpi')
59 files changed, 2339 insertions, 797 deletions
diff --git a/drivers/acpi/Kconfig b/drivers/acpi/Kconfig index dd8729d674e5..93d2c7971df6 100644 --- a/drivers/acpi/Kconfig +++ b/drivers/acpi/Kconfig @@ -211,6 +211,18 @@ config ACPI_HOTPLUG_CPU select ACPI_CONTAINER default y +config ACPI_PROCESSOR_AGGREGATOR + tristate "Processor Aggregator" + depends on ACPI_PROCESSOR + depends on EXPERIMENTAL + depends on X86 + help + ACPI 4.0 defines processor Aggregator, which enables OS to perform + specific processor configuration and control that applies to all + processors in the platform. Currently only logical processor idling + is defined, which is to reduce power consumption. This driver + supports the new device. + config ACPI_THERMAL tristate "Thermal Zone" depends on ACPI_PROCESSOR diff --git a/drivers/acpi/Makefile b/drivers/acpi/Makefile index 82cd49dc603b..c7b10b4298e9 100644 --- a/drivers/acpi/Makefile +++ b/drivers/acpi/Makefile @@ -19,6 +19,7 @@ obj-y += acpi.o \ # All the builtin files are in the "acpi." module_param namespace. acpi-y += osl.o utils.o reboot.o +acpi-y += hest.o # sleep related files acpi-y += wakeup.o @@ -62,3 +63,5 @@ obj-$(CONFIG_ACPI_POWER_METER) += power_meter.o processor-y := processor_core.o processor_throttling.o processor-y += processor_idle.o processor_thermal.o processor-$(CONFIG_CPU_FREQ) += processor_perflib.o + +obj-$(CONFIG_ACPI_PROCESSOR_AGGREGATOR) += acpi_pad.o diff --git a/drivers/acpi/ac.c b/drivers/acpi/ac.c index 98b9690b0159..b6ed60b57b0d 100644 --- a/drivers/acpi/ac.c +++ b/drivers/acpi/ac.c @@ -245,6 +245,7 @@ static void acpi_ac_notify(struct acpi_device *device, u32 event) acpi_bus_generate_netlink_event(device->pnp.device_class, dev_name(&device->dev), event, (u32) ac->state); + acpi_notifier_call_chain(device, event, (u32) ac->state); #ifdef CONFIG_ACPI_SYSFS_POWER kobject_uevent(&ac->charger.dev->kobj, KOBJ_CHANGE); #endif diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c index 28ccdbc05ac8..3597d73f28f6 100644 --- a/drivers/acpi/acpi_memhotplug.c +++ b/drivers/acpi/acpi_memhotplug.c @@ -537,7 +537,7 @@ static int __init acpi_memory_device_init(void) status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, - acpi_memory_register_notify_handler, + acpi_memory_register_notify_handler, NULL, NULL, NULL); if (ACPI_FAILURE(status)) { @@ -561,7 +561,7 @@ static void __exit acpi_memory_device_exit(void) */ status = acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, - acpi_memory_deregister_notify_handler, + acpi_memory_deregister_notify_handler, NULL, NULL, NULL); if (ACPI_FAILURE(status)) diff --git a/drivers/acpi/acpi_pad.c b/drivers/acpi/acpi_pad.c new file mode 100644 index 000000000000..0d2cdb86158b --- /dev/null +++ b/drivers/acpi/acpi_pad.c @@ -0,0 +1,514 @@ +/* + * acpi_pad.c ACPI Processor Aggregator Driver + * + * Copyright (c) 2009, Intel Corporation. + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2, as published by the Free Software Foundation. + * + * This program is distributed in the hope 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., + * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. + * + */ + +#include <linux/kernel.h> +#include <linux/cpumask.h> +#include <linux/module.h> +#include <linux/init.h> +#include <linux/types.h> +#include <linux/kthread.h> +#include <linux/freezer.h> +#include <linux/cpu.h> +#include <linux/clockchips.h> +#include <acpi/acpi_bus.h> +#include <acpi/acpi_drivers.h> + +#define ACPI_PROCESSOR_AGGREGATOR_CLASS "processor_aggregator" +#define ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME "Processor Aggregator" +#define ACPI_PROCESSOR_AGGREGATOR_NOTIFY 0x80 +static DEFINE_MUTEX(isolated_cpus_lock); + +#define MWAIT_SUBSTATE_MASK (0xf) +#define MWAIT_CSTATE_MASK (0xf) +#define MWAIT_SUBSTATE_SIZE (4) +#define CPUID_MWAIT_LEAF (5) +#define CPUID5_ECX_EXTENSIONS_SUPPORTED (0x1) +#define CPUID5_ECX_INTERRUPT_BREAK (0x2) +static unsigned long power_saving_mwait_eax; +static void power_saving_mwait_init(void) +{ + unsigned int eax, ebx, ecx, edx; + unsigned int highest_cstate = 0; + unsigned int highest_subcstate = 0; + int i; + + if (!boot_cpu_has(X86_FEATURE_MWAIT)) + return; + if (boot_cpu_data.cpuid_level < CPUID_MWAIT_LEAF) + return; + + cpuid(CPUID_MWAIT_LEAF, &eax, &ebx, &ecx, &edx); + + if (!(ecx & CPUID5_ECX_EXTENSIONS_SUPPORTED) || + !(ecx & CPUID5_ECX_INTERRUPT_BREAK)) + return; + + edx >>= MWAIT_SUBSTATE_SIZE; + for (i = 0; i < 7 && edx; i++, edx >>= MWAIT_SUBSTATE_SIZE) { + if (edx & MWAIT_SUBSTATE_MASK) { + highest_cstate = i; + highest_subcstate = edx & MWAIT_SUBSTATE_MASK; + } + } + power_saving_mwait_eax = (highest_cstate << MWAIT_SUBSTATE_SIZE) | + (highest_subcstate - 1); + + for_each_online_cpu(i) + clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ON, &i); + +#if defined(CONFIG_GENERIC_TIME) && defined(CONFIG_X86) + switch (boot_cpu_data.x86_vendor) { + case X86_VENDOR_AMD: + case X86_VENDOR_INTEL: + /* + * AMD Fam10h TSC will tick in all + * C/P/S0/S1 states when this bit is set. + */ + if (boot_cpu_has(X86_FEATURE_NONSTOP_TSC)) + return; + + /*FALL THROUGH*/ + default: + /* TSC could halt in idle, so notify users */ + mark_tsc_unstable("TSC halts in idle"); + } +#endif +} + +static unsigned long cpu_weight[NR_CPUS]; +static int tsk_in_cpu[NR_CPUS] = {[0 ... NR_CPUS-1] = -1}; +static DECLARE_BITMAP(pad_busy_cpus_bits, NR_CPUS); +static void round_robin_cpu(unsigned int tsk_index) +{ + struct cpumask *pad_busy_cpus = to_cpumask(pad_busy_cpus_bits); + cpumask_var_t tmp; + int cpu; + unsigned long min_weight = -1, preferred_cpu; + + if (!alloc_cpumask_var(&tmp, GFP_KERNEL)) + return; + + mutex_lock(&isolated_cpus_lock); + cpumask_clear(tmp); + for_each_cpu(cpu, pad_busy_cpus) + cpumask_or(tmp, tmp, topology_thread_cpumask(cpu)); + cpumask_andnot(tmp, cpu_online_mask, tmp); + /* avoid HT sibilings if possible */ + if (cpumask_empty(tmp)) + cpumask_andnot(tmp, cpu_online_mask, pad_busy_cpus); + if (cpumask_empty(tmp)) { + mutex_unlock(&isolated_cpus_lock); + return; + } + for_each_cpu(cpu, tmp) { + if (cpu_weight[cpu] < min_weight) { + min_weight = cpu_weight[cpu]; + preferred_cpu = cpu; + } + } + + if (tsk_in_cpu[tsk_index] != -1) + cpumask_clear_cpu(tsk_in_cpu[tsk_index], pad_busy_cpus); + tsk_in_cpu[tsk_index] = preferred_cpu; + cpumask_set_cpu(preferred_cpu, pad_busy_cpus); + cpu_weight[preferred_cpu]++; + mutex_unlock(&isolated_cpus_lock); + + set_cpus_allowed_ptr(current, cpumask_of(preferred_cpu)); +} + +static void exit_round_robin(unsigned int tsk_index) +{ + struct cpumask *pad_busy_cpus = to_cpumask(pad_busy_cpus_bits); + cpumask_clear_cpu(tsk_in_cpu[tsk_index], pad_busy_cpus); + tsk_in_cpu[tsk_index] = -1; +} + +static unsigned int idle_pct = 5; /* percentage */ +static unsigned int round_robin_time = 10; /* second */ +static int power_saving_thread(void *data) +{ + struct sched_param param = {.sched_priority = 1}; + int do_sleep; + unsigned int tsk_index = (unsigned long)data; + u64 last_jiffies = 0; + + sched_setscheduler(current, SCHED_RR, ¶m); + + while (!kthread_should_stop()) { + int cpu; + u64 expire_time; + + try_to_freeze(); + + /* round robin to cpus */ + if (last_jiffies + round_robin_time * HZ < jiffies) { + last_jiffies = jiffies; + round_robin_cpu(tsk_index); + } + + do_sleep = 0; + + current_thread_info()->status &= ~TS_POLLING; + /* + * TS_POLLING-cleared state must be visible before we test + * NEED_RESCHED: + */ + smp_mb(); + + expire_time = jiffies + HZ * (100 - idle_pct) / 100; + + while (!need_resched()) { + local_irq_disable(); + cpu = smp_processor_id(); + clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_ENTER, + &cpu); + stop_critical_timings(); + + __monitor((void *)¤t_thread_info()->flags, 0, 0); + smp_mb(); + if (!need_resched()) + __mwait(power_saving_mwait_eax, 1); + + start_critical_timings(); + clockevents_notify(CLOCK_EVT_NOTIFY_BROADCAST_EXIT, + &cpu); + local_irq_enable(); + + if (jiffies > expire_time) { + do_sleep = 1; + break; + } + } + + current_thread_info()->status |= TS_POLLING; + + /* + * current sched_rt has threshold for rt task running time. + * When a rt task uses 95% CPU time, the rt thread will be + * scheduled out for 5% CPU time to not starve other tasks. But + * the mechanism only works when all CPUs have RT task running, + * as if one CPU hasn't RT task, RT task from other CPUs will + * borrow CPU time from this CPU and cause RT task use > 95% + * CPU time. To make 'avoid staration' work, takes a nap here. + */ + if (do_sleep) + schedule_timeout_killable(HZ * idle_pct / 100); + } + + exit_round_robin(tsk_index); + return 0; +} + +static struct task_struct *ps_tsks[NR_CPUS]; +static unsigned int ps_tsk_num; +static int create_power_saving_task(void) +{ + ps_tsks[ps_tsk_num] = kthread_run(power_saving_thread, + (void *)(unsigned long)ps_tsk_num, + "power_saving/%d", ps_tsk_num); + if (ps_tsks[ps_tsk_num]) { + ps_tsk_num++; + return 0; + } + return -EINVAL; +} + +static void destroy_power_saving_task(void) +{ + if (ps_tsk_num > 0) { + ps_tsk_num--; + kthread_stop(ps_tsks[ps_tsk_num]); + } +} + +static void set_power_saving_task_num(unsigned int num) +{ + if (num > ps_tsk_num) { + while (ps_tsk_num < num) { + if (create_power_saving_task()) + return; + } + } else if (num < ps_tsk_num) { + while (ps_tsk_num > num) + destroy_power_saving_task(); + } +} + +static int acpi_pad_idle_cpus(unsigned int num_cpus) +{ + get_online_cpus(); + + num_cpus = min_t(unsigned int, num_cpus, num_online_cpus()); + set_power_saving_task_num(num_cpus); + + put_online_cpus(); + return 0; +} + +static uint32_t acpi_pad_idle_cpus_num(void) +{ + return ps_tsk_num; +} + +static ssize_t acpi_pad_rrtime_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + unsigned long num; + if (strict_strtoul(buf, 0, &num)) + return -EINVAL; + if (num < 1 || num >= 100) + return -EINVAL; + mutex_lock(&isolated_cpus_lock); + round_robin_time = num; + mutex_unlock(&isolated_cpus_lock); + return count; +} + +static ssize_t acpi_pad_rrtime_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d", round_robin_time); +} +static DEVICE_ATTR(rrtime, S_IRUGO|S_IWUSR, + acpi_pad_rrtime_show, + acpi_pad_rrtime_store); + +static ssize_t acpi_pad_idlepct_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + unsigned long num; + if (strict_strtoul(buf, 0, &num)) + return -EINVAL; + if (num < 1 || num >= 100) + return -EINVAL; + mutex_lock(&isolated_cpus_lock); + idle_pct = num; + mutex_unlock(&isolated_cpus_lock); + return count; +} + +static ssize_t acpi_pad_idlepct_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return scnprintf(buf, PAGE_SIZE, "%d", idle_pct); +} +static DEVICE_ATTR(idlepct, S_IRUGO|S_IWUSR, + acpi_pad_idlepct_show, + acpi_pad_idlepct_store); + +static ssize_t acpi_pad_idlecpus_store(struct device *dev, + struct device_attribute *attr, const char *buf, size_t count) +{ + unsigned long num; + if (strict_strtoul(buf, 0, &num)) + return -EINVAL; + mutex_lock(&isolated_cpus_lock); + acpi_pad_idle_cpus(num); + mutex_unlock(&isolated_cpus_lock); + return count; +} + +static ssize_t acpi_pad_idlecpus_show(struct device *dev, + struct device_attribute *attr, char *buf) +{ + return cpumask_scnprintf(buf, PAGE_SIZE, + to_cpumask(pad_busy_cpus_bits)); +} +static DEVICE_ATTR(idlecpus, S_IRUGO|S_IWUSR, + acpi_pad_idlecpus_show, + acpi_pad_idlecpus_store); + +static int acpi_pad_add_sysfs(struct acpi_device *device) +{ + int result; + + result = device_create_file(&device->dev, &dev_attr_idlecpus); + if (result) + return -ENODEV; + result = device_create_file(&device->dev, &dev_attr_idlepct); + if (result) { + device_remove_file(&device->dev, &dev_attr_idlecpus); + return -ENODEV; + } + result = device_create_file(&device->dev, &dev_attr_rrtime); + if (result) { + device_remove_file(&device->dev, &dev_attr_idlecpus); + device_remove_file(&device->dev, &dev_attr_idlepct); + return -ENODEV; + } + return 0; +} + +static void acpi_pad_remove_sysfs(struct acpi_device *device) +{ + device_remove_file(&device->dev, &dev_attr_idlecpus); + device_remove_file(&device->dev, &dev_attr_idlepct); + device_remove_file(&device->dev, &dev_attr_rrtime); +} + +/* Query firmware how many CPUs should be idle */ +static int acpi_pad_pur(acpi_handle handle, int *num_cpus) +{ + struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; + acpi_status status; + union acpi_object *package; + int rev, num, ret = -EINVAL; + + status = acpi_evaluate_object(handle, "_PUR", NULL, &buffer); + if (ACPI_FAILURE(status)) + return -EINVAL; + package = buffer.pointer; + if (package->type != ACPI_TYPE_PACKAGE || package->package.count != 2) + goto out; + rev = package->package.elements[0].integer.value; + num = package->package.elements[1].integer.value; + if (rev != 1) + goto out; + *num_cpus = num; + ret = 0; +out: + kfree(buffer.pointer); + return ret; +} + +/* Notify firmware how many CPUs are idle */ +static void acpi_pad_ost(acpi_handle handle, int stat, + uint32_t idle_cpus) +{ + union acpi_object params[3] = { + {.type = ACPI_TYPE_INTEGER,}, + {.type = ACPI_TYPE_INTEGER,}, + {.type = ACPI_TYPE_BUFFER,}, + }; + struct acpi_object_list arg_list = {3, params}; + + params[0].integer.value = ACPI_PROCESSOR_AGGREGATOR_NOTIFY; + params[1].integer.value = stat; + params[2].buffer.length = 4; + params[2].buffer.pointer = (void *)&idle_cpus; + acpi_evaluate_object(handle, "_OST", &arg_list, NULL); +} + +static void acpi_pad_handle_notify(acpi_handle handle) +{ + int num_cpus, ret; + uint32_t idle_cpus; + + mutex_lock(&isolated_cpus_lock); + if (acpi_pad_pur(handle, &num_cpus)) { + mutex_unlock(&isolated_cpus_lock); + return; + } + ret = acpi_pad_idle_cpus(num_cpus); + idle_cpus = acpi_pad_idle_cpus_num(); + if (!ret) + acpi_pad_ost(handle, 0, idle_cpus); + else + acpi_pad_ost(handle, 1, 0); + mutex_unlock(&isolated_cpus_lock); +} + +static void acpi_pad_notify(acpi_handle handle, u32 event, + void *data) +{ + struct acpi_device *device = data; + + switch (event) { + case ACPI_PROCESSOR_AGGREGATOR_NOTIFY: + acpi_pad_handle_notify(handle); + acpi_bus_generate_proc_event(device, event, 0); + acpi_bus_generate_netlink_event(device->pnp.device_class, + dev_name(&device->dev), event, 0); + break; + default: + printk(KERN_WARNING"Unsupported event [0x%x]\n", event); + break; + } +} + +static int acpi_pad_add(struct acpi_device *device) +{ + acpi_status status; + + strcpy(acpi_device_name(device), ACPI_PROCESSOR_AGGREGATOR_DEVICE_NAME); + strcpy(acpi_device_class(device), ACPI_PROCESSOR_AGGREGATOR_CLASS); + + if (acpi_pad_add_sysfs(device)) + return -ENODEV; + + status = acpi_install_notify_handler(device->handle, + ACPI_DEVICE_NOTIFY, acpi_pad_notify, device); + if (ACPI_FAILURE(status)) { + acpi_pad_remove_sysfs(device); + return -ENODEV; + } + + return 0; +} + +static int acpi_pad_remove(struct acpi_device *device, + int type) +{ + mutex_lock(&isolated_cpus_lock); + acpi_pad_idle_cpus(0); + mutex_unlock(&isolated_cpus_lock); + + acpi_remove_notify_handler(device->handle, + ACPI_DEVICE_NOTIFY, acpi_pad_notify); + acpi_pad_remove_sysfs(device); + return 0; +} + +static const struct acpi_device_id pad_device_ids[] = { + {"ACPI000C", 0}, + {"", 0}, +}; +MODULE_DEVICE_TABLE(acpi, pad_device_ids); + +static struct acpi_driver acpi_pad_driver = { + .name = "processor_aggregator", + .class = ACPI_PROCESSOR_AGGREGATOR_CLASS, + .ids = pad_device_ids, + .ops = { + .add = acpi_pad_add, + .remove = acpi_pad_remove, + }, +}; + +static int __init acpi_pad_init(void) +{ + power_saving_mwait_init(); + if (power_saving_mwait_eax == 0) + return -EINVAL; + + return acpi_bus_register_driver(&acpi_pad_driver); +} + +static void __exit acpi_pad_exit(void) +{ + acpi_bus_unregister_driver(&acpi_pad_driver); +} + +module_init(acpi_pad_init); +module_exit(acpi_pad_exit); +MODULE_AUTHOR("Shaohua Li<shaohua.li@intel.com>"); +MODULE_DESCRIPTION("ACPI Processor Aggregator Driver"); +MODULE_LICENSE("GPL"); diff --git a/drivers/acpi/acpica/Makefile b/drivers/acpi/acpica/Makefile index e7973bc16846..7423052ece5a 100644 --- a/drivers/acpi/acpica/Makefile +++ b/drivers/acpi/acpica/Makefile @@ -28,7 +28,7 @@ acpi-$(ACPI_FUTURE_USAGE) += hwtimer.o acpi-y += nsaccess.o nsload.o nssearch.o nsxfeval.o \ nsalloc.o nseval.o nsnames.o nsutils.o nsxfname.o \ nsdump.o nsinit.o nsobject.o nswalk.o nsxfobj.o \ - nsparse.o nspredef.o nsrepair.o + nsparse.o nspredef.o nsrepair.o nsrepair2.o acpi-$(ACPI_FUTURE_USAGE) += nsdumpdv.o diff --git a/drivers/acpi/acpica/acconfig.h b/drivers/acpi/acpica/acconfig.h index 8e679ef5b231..a4471e3d3853 100644 --- a/drivers/acpi/acpica/acconfig.h +++ b/drivers/acpi/acpica/acconfig.h @@ -103,9 +103,9 @@ #define ACPI_MAX_REFERENCE_COUNT 0x1000 -/* Size of cached memory mapping for system memory operation region */ +/* Default page size for use in mapping memory for operation regions */ -#define ACPI_SYSMEM_REGION_WINDOW_SIZE 4096 +#define ACPI_DEFAULT_PAGE_SIZE 4096 /* Must be power of 2 */ /* owner_id tracking. 8 entries allows for 255 owner_ids */ diff --git a/drivers/acpi/acpica/acmacros.h b/drivers/acpi/acpica/acmacros.h index 3acd9c6760ea..7d9ba6e57554 100644 --- a/drivers/acpi/acpica/acmacros.h +++ b/drivers/acpi/acpica/acmacros.h @@ -341,6 +341,7 @@ #define ACPI_ERROR_NAMESPACE(s, e) acpi_ns_report_error (AE_INFO, s, e); #define ACPI_ERROR_METHOD(s, n, p, e) acpi_ns_report_method_error (AE_INFO, s, n, p, e); #define ACPI_WARN_PREDEFINED(plist) acpi_ut_predefined_warning plist +#define ACPI_INFO_PREDEFINED(plist) acpi_ut_predefined_info plist #else @@ -349,6 +350,8 @@ #define ACPI_ERROR_NAMESPACE(s, e) #define ACPI_ERROR_METHOD(s, n, p, e) #define ACPI_WARN_PREDEFINED(plist) +#define ACPI_INFO_PREDEFINED(plist) + #endif /* ACPI_NO_ERROR_MESSAGES */ /* diff --git a/drivers/acpi/acpica/acnamesp.h b/drivers/acpi/acpica/acnamesp.h index 09a2764c734b..ab83919dda61 100644 --- a/drivers/acpi/acpica/acnamesp.h +++ b/drivers/acpi/acpica/acnamesp.h @@ -104,7 +104,8 @@ acpi_ns_walk_namespace(acpi_object_type type, acpi_handle start_object, u32 max_depth, u32 flags, - acpi_walk_callback user_function, + acpi_walk_callback pre_order_visit, + acpi_walk_callback post_order_visit, void *context, void **return_value); struct acpi_namespace_node *acpi_ns_get_next_node(struct acpi_namespace_node @@ -272,7 +273,8 @@ acpi_ns_get_attached_data(struct acpi_namespace_node *node, acpi_object_handler handler, void **data); /* - * nsrepair - return object repair for predefined methods/objects + * nsrepair - General return object repair for all + * predefined methods/objects */ acpi_status acpi_ns_repair_object(struct acpi_predefined_data *data, @@ -285,6 +287,16 @@ acpi_ns_repair_package_list(struct acpi_predefined_data *data, union acpi_operand_object **obj_desc_ptr); /* + * nsrepair2 - Return object repair for specific + * predefined methods/objects + */ +acpi_status +acpi_ns_complex_repairs(struct acpi_predefined_data *data, + struct acpi_namespace_node *node, + acpi_status validate_status, + union acpi_operand_object **return_object_ptr); + +/* * nssearch - Namespace searching and entry */ acpi_status diff --git a/drivers/acpi/acpica/acpredef.h b/drivers/acpi/acpica/acpredef.h index cd80d1dd1950..57bdaf6ffab1 100644 --- a/drivers/acpi/acpica/acpredef.h +++ b/drivers/acpi/acpica/acpredef.h @@ -203,8 +203,9 @@ static const union acpi_predefined_info predefined_names[] = {{"_BCT", 1, ACPI_RTYPE_INTEGER}}, {{"_BDN", 0, ACPI_RTYPE_INTEGER}}, {{"_BFS", 1, 0}}, - {{"_BIF", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (9 Int),(4 Str) */ - {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 9, ACPI_RTYPE_STRING}, 4,0}}, + {{"_BIF", 0, ACPI_RTYPE_PACKAGE} }, /* Fixed-length (9 Int),(4 Str/Buf) */ + {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 9, + ACPI_RTYPE_STRING | ACPI_RTYPE_BUFFER}, 4, 0} }, {{"_BIX", 0, ACPI_RTYPE_PACKAGE}}, /* Fixed-length (16 Int),(4 Str) */ {{{ACPI_PTYPE1_FIXED, ACPI_RTYPE_INTEGER, 16, ACPI_RTYPE_STRING}, 4, diff --git a/drivers/acpi/acpica/acutils.h b/drivers/acpi/acpica/acutils.h index 863a264b829e..3a451a21a3f9 100644 --- a/drivers/acpi/acpica/acutils.h +++ b/drivers/acpi/acpica/acutils.h @@ -386,6 +386,8 @@ u8 acpi_ut_valid_internal_object(void *object); union acpi_operand_object *acpi_ut_create_package_object(u32 count); +union acpi_operand_object *acpi_ut_create_integer_object(u64 value); + union acpi_operand_object *acpi_ut_create_buffer_object(acpi_size buffer_size); union acpi_operand_object *acpi_ut_create_string_object(acpi_size string_size); @@ -481,6 +483,11 @@ acpi_ut_predefined_warning(const char *module_name, char *pathname, u8 node_flags, const char *format, ...); +void ACPI_INTERNAL_VAR_XFACE +acpi_ut_predefined_info(const char *module_name, + u32 line_number, + char *pathname, u8 node_flags, const char *format, ...); + /* Values for Base above (16=Hex, 10=Decimal) */ #define ACPI_ANY_BASE 0 diff --git a/drivers/acpi/acpica/dsinit.c b/drivers/acpi/acpica/dsinit.c index 3aae13f30c5e..f23fa0be6fc2 100644 --- a/drivers/acpi/acpica/dsinit.c +++ b/drivers/acpi/acpica/dsinit.c @@ -192,7 +192,7 @@ acpi_ds_initialize_objects(u32 table_index, status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, start_node, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, acpi_ds_init_one_object, - &info, NULL); + NULL, &info, NULL); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace")); } diff --git a/drivers/acpi/acpica/dsmthdat.c b/drivers/acpi/acpica/dsmthdat.c index 7d077bb2f525..0ba19f84ad82 100644 --- a/drivers/acpi/acpica/dsmthdat.c +++ b/drivers/acpi/acpica/dsmthdat.c @@ -409,13 +409,11 @@ acpi_ds_method_data_get_value(u8 type, /* If slack enabled, init the local_x/arg_x to an Integer of value zero */ if (acpi_gbl_enable_interpreter_slack) { - object = - acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + object = acpi_ut_create_integer_object((u64) 0); if (!object) { return_ACPI_STATUS(AE_NO_MEMORY); } - object->integer.value = 0; node->object = object; } diff --git a/drivers/acpi/acpica/dsobject.c b/drivers/acpi/acpica/dsobject.c index 507e1f0bbdfd..9bc1ba076347 100644 --- a/drivers/acpi/acpica/dsobject.c +++ b/drivers/acpi/acpica/dsobject.c @@ -486,7 +486,7 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state, * * Note: technically, this is an error, from ACPI spec: "It is an error * for NumElements to be less than the number of elements in the - * PackageList". However, we just print an error message and + * PackageList". However, we just print a message and * no exception is returned. This provides Windows compatibility. Some * BIOSs will alter the num_elements on the fly, creating this type * of ill-formed package object. @@ -510,9 +510,9 @@ acpi_ds_build_internal_package_obj(struct acpi_walk_state *walk_state, arg = arg->common.next; } - ACPI_WARNING((AE_INFO, - "Package List length (0x%X) larger than NumElements count (0x%X), truncated\n", - i, element_count)); + ACPI_INFO((AE_INFO, + "Actual Package length (0x%X) is larger than NumElements field (0x%X), truncated\n", + i, element_count)); } else if (i < element_count) { /* * Arg list (elements) was exhausted, but we did not reach num_elements count. diff --git a/drivers/acpi/acpica/dswload.c b/drivers/acpi/acpica/dswload.c index 6de3a99d4cd4..10fc78517843 100644 --- a/drivers/acpi/acpica/dswload.c +++ b/drivers/acpi/acpica/dswload.c @@ -639,26 +639,42 @@ acpi_ds_load2_begin_op(struct acpi_walk_state *walk_state, break; case AML_SCOPE_OP: - /* - * The Path is an object reference to an existing object. - * Don't enter the name into the namespace, but look it up - * for use later. - */ - status = - acpi_ns_lookup(walk_state->scope_info, buffer_ptr, - object_type, ACPI_IMODE_EXECUTE, - ACPI_NS_SEARCH_PARENT, walk_state, &(node)); - if (ACPI_FAILURE(status)) { -#ifdef ACPI_ASL_COMPILER - if (status == AE_NOT_FOUND) { - status = AE_OK; - } else { - ACPI_ERROR_NAMESPACE(buffer_ptr, status); + + /* Special case for Scope(\) -> refers to the Root node */ + + if (op && (op->named.node == acpi_gbl_root_node)) { + node = op->named.node; + + status = + acpi_ds_scope_stack_push(node, object_type, + walk_state); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } + } else { + /* + * The Path is an object reference to an existing object. + * Don't enter the name into the namespace, but look it up + * for use later. + */ + status = + acpi_ns_lookup(walk_state->scope_info, buffer_ptr, + object_type, ACPI_IMODE_EXECUTE, + ACPI_NS_SEARCH_PARENT, walk_state, + &(node)); + if (ACPI_FAILURE(status)) { +#ifdef ACPI_ASL_COMPILER + if (status == AE_NOT_FOUND) { + status = AE_OK; + } else { + ACPI_ERROR_NAMESPACE(buffer_ptr, + status); + } #else - ACPI_ERROR_NAMESPACE(buffer_ptr, status); + ACPI_ERROR_NAMESPACE(buffer_ptr, status); #endif - return_ACPI_STATUS(status); + return_ACPI_STATUS(status); + } } /* diff --git a/drivers/acpi/acpica/evgpeblk.c b/drivers/acpi/acpica/evgpeblk.c index a60aaa7635f3..247920900187 100644 --- a/drivers/acpi/acpica/evgpeblk.c +++ b/drivers/acpi/acpica/evgpeblk.c @@ -945,8 +945,8 @@ acpi_ev_create_gpe_block(struct acpi_namespace_node *gpe_device, status = acpi_ns_walk_namespace(ACPI_TYPE_METHOD, gpe_device, ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, - acpi_ev_save_method_info, gpe_block, - NULL); + acpi_ev_save_method_info, NULL, + gpe_block, NULL); /* Return the new block */ @@ -1022,8 +1022,8 @@ acpi_ev_initialize_gpe_block(struct acpi_namespace_node *gpe_device, status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, - acpi_ev_match_prw_and_gpe, &gpe_info, - NULL); + acpi_ev_match_prw_and_gpe, NULL, + &gpe_info, NULL); } /* diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index 98c7f9c62653..0bc807c33a56 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -51,6 +51,10 @@ ACPI_MODULE_NAME("evregion") /* Local prototypes */ +static u8 +acpi_ev_has_default_handler(struct acpi_namespace_node *node, + acpi_adr_space_type space_id); + static acpi_status acpi_ev_reg_run(acpi_handle obj_handle, u32 level, void *context, void **return_value); @@ -142,6 +146,50 @@ acpi_status acpi_ev_install_region_handlers(void) /******************************************************************************* * + * FUNCTION: acpi_ev_has_default_handler + * + * PARAMETERS: Node - Namespace node for the device + * space_id - The address space ID + * + * RETURN: TRUE if default handler is installed, FALSE otherwise + * + * DESCRIPTION: Check if the default handler is installed for the requested + * space ID. + * + ******************************************************************************/ + +static u8 +acpi_ev_has_default_handler(struct acpi_namespace_node *node, + acpi_adr_space_type space_id) +{ + union acpi_operand_object *obj_desc; + union acpi_operand_object *handler_obj; + + /* Must have an existing internal object */ + + obj_desc = acpi_ns_get_attached_object(node); + if (obj_desc) { + handler_obj = obj_desc->device.handler; + + /* Walk the linked list of handlers for this object */ + + while (handler_obj) { + if (handler_obj->address_space.space_id == space_id) { + if (handler_obj->address_space.handler_flags & + ACPI_ADDR_HANDLER_DEFAULT_INSTALLED) { + return (TRUE); + } + } + + handler_obj = handler_obj->address_space.next; + } + } + + return (FALSE); +} + +/******************************************************************************* + * * FUNCTION: acpi_ev_initialize_op_regions * * PARAMETERS: None @@ -169,12 +217,18 @@ acpi_status acpi_ev_initialize_op_regions(void) for (i = 0; i < ACPI_NUM_DEFAULT_SPACES; i++) { /* - * TBD: Make sure handler is the DEFAULT handler, otherwise - * _REG will have already been run. + * Make sure the installed handler is the DEFAULT handler. If not the + * default, the _REG methods will have already been run (when the + * handler was installed) */ - status = acpi_ev_execute_reg_methods(acpi_gbl_root_node, - acpi_gbl_default_address_spaces - [i]); + if (acpi_ev_has_default_handler(acpi_gbl_root_node, + acpi_gbl_default_address_spaces + [i])) { + status = + acpi_ev_execute_reg_methods(acpi_gbl_root_node, + acpi_gbl_default_address_spaces + [i]); + } } (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); @@ -235,23 +289,20 @@ acpi_ev_execute_reg_method(union acpi_operand_object *region_obj, u32 function) * connection status 1 for connecting the handler, 0 for disconnecting * the handler (Passed as a parameter) */ - args[0] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + args[0] = + acpi_ut_create_integer_object((u64) region_obj->region.space_id); if (!args[0]) { status = AE_NO_MEMORY; goto cleanup1; } - args[1] = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + args[1] = acpi_ut_create_integer_object((u64) function); if (!args[1]) { status = AE_NO_MEMORY; goto cleanup2; } - /* Setup the parameter objects */ - - args[0]->integer.value = region_obj->region.space_id; - args[1]->integer.value = function; - args[2] = NULL; + args[2] = NULL; /* Terminate list */ /* Execute the method, no return value */ @@ -971,8 +1022,8 @@ acpi_ev_install_space_handler(struct acpi_namespace_node * node, */ status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, - acpi_ev_install_handler, handler_obj, - NULL); + acpi_ev_install_handler, NULL, + handler_obj, NULL); unlock_and_exit: return_ACPI_STATUS(status); @@ -1008,7 +1059,7 @@ acpi_ev_execute_reg_methods(struct acpi_namespace_node *node, */ status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, node, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, acpi_ev_reg_run, - &space_id, NULL); + NULL, &space_id, NULL); return_ACPI_STATUS(status); } diff --git a/drivers/acpi/acpica/exconfig.c b/drivers/acpi/acpica/exconfig.c index 24afef81af39..46adfa541cbc 100644 --- a/drivers/acpi/acpica/exconfig.c +++ b/drivers/acpi/acpica/exconfig.c @@ -170,14 +170,12 @@ acpi_ex_load_table_op(struct acpi_walk_state *walk_state, /* Table not found, return an Integer=0 and AE_OK */ - ddb_handle = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + ddb_handle = acpi_ut_create_integer_object((u64) 0); if (!ddb_handle) { return_ACPI_STATUS(AE_NO_MEMORY); } - ddb_handle->integer.value = 0; *return_desc = ddb_handle; - return_ACPI_STATUS(AE_OK); } diff --git a/drivers/acpi/acpica/exconvrt.c b/drivers/acpi/acpica/exconvrt.c index 37d0d39e60a6..51d5f224f9fa 100644 --- a/drivers/acpi/acpica/exconvrt.c +++ b/drivers/acpi/acpica/exconvrt.c @@ -167,7 +167,7 @@ acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc, /* Create a new integer */ - return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + return_desc = acpi_ut_create_integer_object(result); if (!return_desc) { return_ACPI_STATUS(AE_NO_MEMORY); } @@ -177,7 +177,6 @@ acpi_ex_convert_to_integer(union acpi_operand_object *obj_desc, /* Save the Result */ - return_desc->integer.value = result; acpi_ex_truncate_for32bit_table(return_desc); *result_desc = return_desc; return_ACPI_STATUS(AE_OK); diff --git a/drivers/acpi/acpica/exfield.c b/drivers/acpi/acpica/exfield.c index 0b33d6c887b9..1588a2d660e7 100644 --- a/drivers/acpi/acpica/exfield.c +++ b/drivers/acpi/acpica/exfield.c @@ -162,13 +162,12 @@ acpi_ex_read_data_from_field(struct acpi_walk_state *walk_state, } else { /* Field will fit within an Integer (normal case) */ - buffer_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + buffer_desc = acpi_ut_create_integer_object((u64) 0); if (!buffer_desc) { return_ACPI_STATUS(AE_NO_MEMORY); } length = acpi_gbl_integer_byte_width; - buffer_desc->integer.value = 0; buffer = &buffer_desc->integer.value; } diff --git a/drivers/acpi/acpica/exoparg1.c b/drivers/acpi/acpica/exoparg1.c index 9635d21e568d..752fe48b2d20 100644 --- a/drivers/acpi/acpica/exoparg1.c +++ b/drivers/acpi/acpica/exoparg1.c @@ -100,12 +100,12 @@ acpi_status acpi_ex_opcode_0A_0T_1R(struct acpi_walk_state *walk_state) /* Create a return object of type Integer */ - return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + return_desc = + acpi_ut_create_integer_object(acpi_os_get_timer()); if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } - return_desc->integer.value = acpi_os_get_timer(); break; default: /* Unknown opcode */ @@ -599,7 +599,7 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state) switch (walk_state->opcode) { case AML_LNOT_OP: /* LNot (Operand) */ - return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + return_desc = acpi_ut_create_integer_object((u64) 0); if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; @@ -702,13 +702,11 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state) /* Allocate a descriptor to hold the type. */ - return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + return_desc = acpi_ut_create_integer_object((u64) type); if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } - - return_desc->integer.value = type; break; case AML_SIZE_OF_OP: /* size_of (source_object) */ @@ -777,13 +775,11 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state) * Now that we have the size of the object, create a result * object to hold the value */ - return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + return_desc = acpi_ut_create_integer_object(value); if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } - - return_desc->integer.value = value; break; case AML_REF_OF_OP: /* ref_of (source_object) */ @@ -946,24 +942,24 @@ acpi_status acpi_ex_opcode_1A_0T_1R(struct acpi_walk_state *walk_state) * NOTE: index into a buffer is NOT a pointer to a * sub-buffer of the main buffer, it is only a pointer to a * single element (byte) of the buffer! + * + * Since we are returning the value of the buffer at the + * indexed location, we don't need to add an additional + * reference to the buffer itself. */ return_desc = - acpi_ut_create_internal_object - (ACPI_TYPE_INTEGER); + acpi_ut_create_integer_object((u64) + temp_desc-> + buffer. + pointer + [operand + [0]-> + reference. + value]); if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } - - /* - * Since we are returning the value of the buffer at the - * indexed location, we don't need to add an additional - * reference to the buffer itself. - */ - return_desc->integer.value = - temp_desc->buffer. - pointer[operand[0]->reference. - value]; break; case ACPI_TYPE_PACKAGE: diff --git a/drivers/acpi/acpica/exoparg6.c b/drivers/acpi/acpica/exoparg6.c index ae43f7670a6c..295542e6bd51 100644 --- a/drivers/acpi/acpica/exoparg6.c +++ b/drivers/acpi/acpica/exoparg6.c @@ -253,18 +253,15 @@ acpi_status acpi_ex_opcode_6A_0T_1R(struct acpi_walk_state * walk_state) } /* Create an integer for the return value */ + /* Default return value is ACPI_INTEGER_MAX if no match found */ - return_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + return_desc = acpi_ut_create_integer_object(ACPI_INTEGER_MAX); if (!return_desc) { status = AE_NO_MEMORY; goto cleanup; } - /* Default return value if no match found */ - - return_desc->integer.value = ACPI_INTEGER_MAX; - /* * Examine each element until a match is found. Both match conditions * must be satisfied for a match to occur. Within the loop, diff --git a/drivers/acpi/acpica/exregion.c b/drivers/acpi/acpica/exregion.c index 3a54b737d2da..2bd83ac57c3a 100644 --- a/drivers/acpi/acpica/exregion.c +++ b/drivers/acpi/acpica/exregion.c @@ -77,7 +77,8 @@ acpi_ex_system_memory_space_handler(u32 function, void *logical_addr_ptr = NULL; struct acpi_mem_space_context *mem_info = region_context; u32 length; - acpi_size window_size; + acpi_size map_length; + acpi_size page_boundary_map_length; #ifdef ACPI_MISALIGNMENT_NOT_SUPPORTED u32 remainder; #endif @@ -144,25 +145,39 @@ acpi_ex_system_memory_space_handler(u32 function, } /* - * Don't attempt to map memory beyond the end of the region, and - * constrain the maximum mapping size to something reasonable. + * Attempt to map from the requested address to the end of the region. + * However, we will never map more than one page, nor will we cross + * a page boundary. */ - window_size = (acpi_size) + map_length = (acpi_size) ((mem_info->address + mem_info->length) - address); - if (window_size > ACPI_SYSMEM_REGION_WINDOW_SIZE) { - window_size = ACPI_SYSMEM_REGION_WINDOW_SIZE; + /* + * If mapping the entire remaining portion of the region will cross + * a page boundary, just map up to the page boundary, do not cross. + * On some systems, crossing a page boundary while mapping regions + * can cause warnings if the pages have different attributes + * due to resource management + */ + page_boundary_map_length = + ACPI_ROUND_UP(address, ACPI_DEFAULT_PAGE_SIZE) - address; + + if (!page_boundary_map_length) { + page_boundary_map_length = ACPI_DEFAULT_PAGE_SIZE; + } + + if (map_length > page_boundary_map_length) { + map_length = page_boundary_map_length; } /* Create a new mapping starting at the address given */ - mem_info->mapped_logical_address = - acpi_os_map_memory((acpi_physical_address) address, window_size); + mem_info->mapped_logical_address = acpi_os_map_memory((acpi_physical_address) address, map_length); if (!mem_info->mapped_logical_address) { ACPI_ERROR((AE_INFO, "Could not map memory at %8.8X%8.8X, size %X", ACPI_FORMAT_NATIVE_UINT(address), - (u32) window_size)); + (u32) map_length)); mem_info->mapped_length = 0; return_ACPI_STATUS(AE_NO_MEMORY); } @@ -170,7 +185,7 @@ acpi_ex_system_memory_space_handler(u32 function, /* Save the physical address and mapping size */ mem_info->mapped_physical_address = address; - mem_info->mapped_length = window_size; + mem_info->mapped_length = map_length; } /* diff --git a/drivers/acpi/acpica/nsdump.c b/drivers/acpi/acpica/nsdump.c index 2bad613db73a..2deb986861ca 100644 --- a/drivers/acpi/acpica/nsdump.c +++ b/drivers/acpi/acpica/nsdump.c @@ -634,8 +634,8 @@ acpi_ns_dump_objects(acpi_object_type type, (void)acpi_ns_walk_namespace(type, start_handle, max_depth, ACPI_NS_WALK_NO_UNLOCK | ACPI_NS_WALK_TEMP_NODES, - acpi_ns_dump_one_object, (void *)&info, - NULL); + acpi_ns_dump_one_object, NULL, + (void *)&info, NULL); } #endif /* ACPI_FUTURE_USAGE */ diff --git a/drivers/acpi/acpica/nsdumpdv.c b/drivers/acpi/acpica/nsdumpdv.c index 0fe87f1aef16..36be7f0e97ec 100644 --- a/drivers/acpi/acpica/nsdumpdv.c +++ b/drivers/acpi/acpica/nsdumpdv.c @@ -131,7 +131,8 @@ void acpi_ns_dump_root_devices(void) status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, sys_bus_handle, ACPI_UINT32_MAX, ACPI_NS_WALK_NO_UNLOCK, - acpi_ns_dump_one_device, NULL, NULL); + acpi_ns_dump_one_device, NULL, NULL, + NULL); } #endif diff --git a/drivers/acpi/acpica/nseval.c b/drivers/acpi/acpica/nseval.c index 846d1132feb1..f771e978c403 100644 --- a/drivers/acpi/acpica/nseval.c +++ b/drivers/acpi/acpica/nseval.c @@ -366,33 +366,49 @@ static void acpi_ns_exec_module_code(union acpi_operand_object *method_obj, struct acpi_evaluate_info *info) { - union acpi_operand_object *root_obj; + union acpi_operand_object *parent_obj; + struct acpi_namespace_node *parent_node; + acpi_object_type type; acpi_status status; ACPI_FUNCTION_TRACE(ns_exec_module_code); + /* + * Get the parent node. We cheat by using the next_object field + * of the method object descriptor. + */ + parent_node = ACPI_CAST_PTR(struct acpi_namespace_node, + method_obj->method.next_object); + type = acpi_ns_get_type(parent_node); + + /* Must clear next_object (acpi_ns_attach_object needs the field) */ + + method_obj->method.next_object = NULL; + /* Initialize the evaluation information block */ ACPI_MEMSET(info, 0, sizeof(struct acpi_evaluate_info)); - info->prefix_node = acpi_gbl_root_node; + info->prefix_node = parent_node; /* - * Get the currently attached root object. Add a reference, because the + * Get the currently attached parent object. Add a reference, because the * ref count will be decreased when the method object is installed to - * the root node. + * the parent node. */ - root_obj = acpi_ns_get_attached_object(acpi_gbl_root_node); - acpi_ut_add_reference(root_obj); + parent_obj = acpi_ns_get_attached_object(parent_node); + if (parent_obj) { + acpi_ut_add_reference(parent_obj); + } - /* Install the method (module-level code) in the root node */ + /* Install the method (module-level code) in the parent node */ - status = acpi_ns_attach_object(acpi_gbl_root_node, method_obj, + status = acpi_ns_attach_object(parent_node, method_obj, ACPI_TYPE_METHOD); if (ACPI_FAILURE(status)) { goto exit; } - /* Execute the root node as a control method */ + /* Execute the parent node as a control method */ status = acpi_ns_evaluate(info); @@ -401,15 +417,19 @@ acpi_ns_exec_module_code(union acpi_operand_object *method_obj, /* Detach the temporary method object */ - acpi_ns_detach_object(acpi_gbl_root_node); + acpi_ns_detach_object(parent_node); - /* Restore the original root object */ + /* Restore the original parent object */ - status = - acpi_ns_attach_object(acpi_gbl_root_node, root_obj, - ACPI_TYPE_DEVICE); + if (parent_obj) { + status = acpi_ns_attach_object(parent_node, parent_obj, type); + } else { + parent_node->type = (u8)type; + } exit: - acpi_ut_remove_reference(root_obj); + if (parent_obj) { + acpi_ut_remove_reference(parent_obj); + } return_VOID; } diff --git a/drivers/acpi/acpica/nsinit.c b/drivers/acpi/acpica/nsinit.c index 1d5b360eb25b..4f8abac231d2 100644 --- a/drivers/acpi/acpica/nsinit.c +++ b/drivers/acpi/acpica/nsinit.c @@ -96,7 +96,7 @@ acpi_status acpi_ns_initialize_objects(void) /* Walk entire namespace from the supplied root */ status = acpi_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, acpi_ns_init_one_object, + ACPI_UINT32_MAX, acpi_ns_init_one_object, NULL, &info, NULL); if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "During WalkNamespace")); @@ -156,7 +156,8 @@ acpi_status acpi_ns_initialize_devices(void) status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, FALSE, - acpi_ns_find_ini_methods, &info, NULL); + acpi_ns_find_ini_methods, NULL, &info, + NULL); if (ACPI_FAILURE(status)) { goto error_exit; } @@ -189,7 +190,8 @@ acpi_status acpi_ns_initialize_devices(void) status = acpi_ns_walk_namespace(ACPI_TYPE_ANY, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, FALSE, - acpi_ns_init_one_device, &info, NULL); + acpi_ns_init_one_device, NULL, &info, + NULL); ACPI_FREE(info.evaluate_info); if (ACPI_FAILURE(status)) { diff --git a/drivers/acpi/acpica/nspredef.c b/drivers/acpi/acpica/nspredef.c index f8427afeebdf..b05f42903c86 100644 --- a/drivers/acpi/acpica/nspredef.c +++ b/drivers/acpi/acpica/nspredef.c @@ -232,6 +232,12 @@ acpi_ns_check_predefined_names(struct acpi_namespace_node *node, status = acpi_ns_check_package(data, return_object_ptr); } + /* + * Perform additional, more complicated repairs on a per-name + * basis. + */ + status = acpi_ns_complex_repairs(data, node, status, return_object_ptr); + check_validation_status: /* * If the object validation failed or if we successfully repaired one @@ -601,7 +607,8 @@ acpi_ns_check_package(struct acpi_predefined_data *data, * there is only one entry). We may be able to repair this by * wrapping the returned Package with a new outer Package. */ - if ((*elements)->common.type != ACPI_TYPE_PACKAGE) { + if (*elements + && ((*elements)->common.type != ACPI_TYPE_PACKAGE)) { /* Create the new outer package and populate it */ @@ -673,6 +680,7 @@ acpi_ns_check_package_list(struct acpi_predefined_data *data, union acpi_operand_object *sub_package; union acpi_operand_object **sub_elements; acpi_status status; + u8 non_trailing_null = FALSE; u32 expected_count; u32 i; u32 j; @@ -680,6 +688,45 @@ acpi_ns_check_package_list(struct acpi_predefined_data *data, /* Validate each sub-Package in the parent Package */ for (i = 0; i < count; i++) { + /* + * Handling for NULL package elements. For now, we will simply allow + * a parent package with trailing NULL elements. This can happen if + * the package was defined to be longer than the initializer list. + * This is legal as per the ACPI specification. It is often used + * to allow for dynamic initialization of a Package. + * + * A future enhancement may be to simply truncate the package to + * remove the trailing NULL elements. + */ + if (!(*elements)) { + if (!non_trailing_null) { + + /* Ensure the remaining elements are all NULL */ + + for (j = 1; j < (count - i + 1); j++) { + if (elements[j]) { + non_trailing_null = TRUE; + } + } + + if (!non_trailing_null) { + + /* Ignore the trailing NULL elements */ + + return (AE_OK); + } + } + + /* There are trailing non-null elements, issue warning */ + + ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, + data->node_flags, + "Found NULL element at package index %u", + i)); + elements++; + continue; + } + sub_package = *elements; sub_elements = sub_package->package.elements; diff --git a/drivers/acpi/acpica/nsrepair.c b/drivers/acpi/acpica/nsrepair.c index db2b2a99c3a8..d563f1a564a7 100644 --- a/drivers/acpi/acpica/nsrepair.c +++ b/drivers/acpi/acpica/nsrepair.c @@ -44,6 +44,7 @@ #include <acpi/acpi.h> #include "accommon.h" #include "acnamesp.h" +#include "acinterp.h" #include "acpredef.h" #define _COMPONENT ACPI_NAMESPACE @@ -76,7 +77,13 @@ acpi_ns_repair_object(struct acpi_predefined_data *data, union acpi_operand_object *return_object = *return_object_ptr; union acpi_operand_object *new_object; acpi_size length; + acpi_status status; + /* + * At this point, we know that the type of the returned object was not + * one of the expected types for this predefined name. Attempt to + * repair the object. Only a limited number of repairs are possible. + */ switch (return_object->common.type) { case ACPI_TYPE_BUFFER: @@ -111,43 +118,94 @@ acpi_ns_repair_object(struct acpi_predefined_data *data, */ ACPI_MEMCPY(new_object->string.pointer, return_object->buffer.pointer, length); + break; - /* - * If the original object is a package element, we need to: - * 1. Set the reference count of the new object to match the - * reference count of the old object. - * 2. Decrement the reference count of the original object. - */ - if (package_index != ACPI_NOT_PACKAGE_ELEMENT) { - new_object->common.reference_count = - return_object->common.reference_count; + case ACPI_TYPE_INTEGER: + + /* 1) Does the method/object legally return a buffer? */ + + if (expected_btypes & ACPI_RTYPE_BUFFER) { + /* + * Convert the Integer to a packed-byte buffer. _MAT needs + * this sometimes, if a read has been performed on a Field + * object that is less than or equal to the global integer + * size (32 or 64 bits). + */ + status = + acpi_ex_convert_to_buffer(return_object, + &new_object); + if (ACPI_FAILURE(status)) { + return (status); + } + } - if (return_object->common.reference_count > 1) { - return_object->common.reference_count--; + /* 2) Does the method/object legally return a string? */ + + else if (expected_btypes & ACPI_RTYPE_STRING) { + /* + * The only supported Integer-to-String conversion is to convert + * an integer of value 0 to a NULL string. The last element of + * _BIF and _BIX packages occasionally need this fix. + */ + if (return_object->integer.value != 0) { + return (AE_AML_OPERAND_TYPE); } - ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, - data->node_flags, - "Converted Buffer to expected String at index %u", - package_index)); + /* Allocate a new NULL string object */ + + new_object = acpi_ut_create_string_object(0); + if (!new_object) { + return (AE_NO_MEMORY); + } } else { - ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, - data->node_flags, - "Converted Buffer to expected String")); + return (AE_AML_OPERAND_TYPE); } + break; - /* Delete old object, install the new return object */ + default: - acpi_ut_remove_reference(return_object); - *return_object_ptr = new_object; - data->flags |= ACPI_OBJECT_REPAIRED; - return (AE_OK); + /* We cannot repair this object */ - default: - break; + return (AE_AML_OPERAND_TYPE); + } + + /* Object was successfully repaired */ + + /* + * If the original object is a package element, we need to: + * 1. Set the reference count of the new object to match the + * reference count of the old object. + * 2. Decrement the reference count of the original object. + */ + if (package_index != ACPI_NOT_PACKAGE_ELEMENT) { + new_object->common.reference_count = + return_object->common.reference_count; + + if (return_object->common.reference_count > 1) { + return_object->common.reference_count--; + } + + ACPI_INFO_PREDEFINED((AE_INFO, data->pathname, data->node_flags, + "Converted %s to expected %s at index %u", + acpi_ut_get_object_type_name + (return_object), + acpi_ut_get_object_type_name(new_object), + package_index)); + } else { + ACPI_INFO_PREDEFINED((AE_INFO, data->pathname, data->node_flags, + "Converted %s to expected %s", + acpi_ut_get_object_type_name + (return_object), + acpi_ut_get_object_type_name + (new_object))); } - return (AE_AML_OPERAND_TYPE); + /* Delete old object, install the new return object */ + + acpi_ut_remove_reference(return_object); + *return_object_ptr = new_object; + data->flags |= ACPI_OBJECT_REPAIRED; + return (AE_OK); } /******************************************************************************* @@ -196,8 +254,8 @@ acpi_ns_repair_package_list(struct acpi_predefined_data *data, *obj_desc_ptr = pkg_obj_desc; data->flags |= ACPI_OBJECT_REPAIRED; - ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, data->node_flags, - "Incorrectly formed Package, attempting repair")); + ACPI_INFO_PREDEFINED((AE_INFO, data->pathname, data->node_flags, + "Repaired Incorrectly formed Package")); return (AE_OK); } diff --git a/drivers/acpi/acpica/nsrepair2.c b/drivers/acpi/acpica/nsrepair2.c new file mode 100644 index 000000000000..d07b68613818 --- /dev/null +++ b/drivers/acpi/acpica/nsrepair2.c @@ -0,0 +1,540 @@ +/****************************************************************************** + * + * Module Name: nsrepair2 - Repair for objects returned by specific + * predefined methods + * + *****************************************************************************/ + +/* + * Copyright (C) 2000 - 2009, 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 <acpi/acpi.h> +#include "accommon.h" +#include "acnamesp.h" + +#define _COMPONENT ACPI_NAMESPACE +ACPI_MODULE_NAME("nsrepair2") + +/* + * Information structure and handler for ACPI predefined names that can + * be repaired on a per-name basis. + */ +typedef +acpi_status(*acpi_repair_function) (struct acpi_predefined_data *data, + union acpi_operand_object **return_object_ptr); + +typedef struct acpi_repair_info { + char name[ACPI_NAME_SIZE]; + acpi_repair_function repair_function; + +} acpi_repair_info; + +/* Local prototypes */ + +static const struct acpi_repair_info *acpi_ns_match_repairable_name(struct + acpi_namespace_node + *node); + +static acpi_status +acpi_ns_repair_ALR(struct acpi_predefined_data *data, + union acpi_operand_object **return_object_ptr); + +static acpi_status +acpi_ns_repair_PSS(struct acpi_predefined_data *data, + union acpi_operand_object **return_object_ptr); + +static acpi_status +acpi_ns_repair_TSS(struct acpi_predefined_data *data, + union acpi_operand_object **return_object_ptr); + +static acpi_status +acpi_ns_check_sorted_list(struct acpi_predefined_data *data, + union acpi_operand_object *return_object, + u32 expected_count, + u32 sort_index, + u8 sort_direction, char *sort_key_name); + +static acpi_status +acpi_ns_remove_null_elements(union acpi_operand_object *package); + +static acpi_status +acpi_ns_sort_list(union acpi_operand_object **elements, + u32 count, u32 index, u8 sort_direction); + +/* Values for sort_direction above */ + +#define ACPI_SORT_ASCENDING 0 +#define ACPI_SORT_DESCENDING 1 + +/* + * This table contains the names of the predefined methods for which we can + * perform more complex repairs. + * + * _ALR: Sort the list ascending by ambient_illuminance if necessary + * _PSS: Sort the list descending by Power if necessary + * _TSS: Sort the list descending by Power if necessary + */ +static const struct acpi_repair_info acpi_ns_repairable_names[] = { + {"_ALR", acpi_ns_repair_ALR}, + {"_PSS", acpi_ns_repair_PSS}, + {"_TSS", acpi_ns_repair_TSS}, + {{0, 0, 0, 0}, NULL} /* Table terminator */ +}; + +/****************************************************************************** + * + * FUNCTION: acpi_ns_complex_repairs + * + * PARAMETERS: Data - Pointer to validation data structure + * Node - Namespace node for the method/object + * validate_status - Original status of earlier validation + * return_object_ptr - Pointer to the object returned from the + * evaluation of a method or object + * + * RETURN: Status. AE_OK if repair was successful. If name is not + * matched, validate_status is returned. + * + * DESCRIPTION: Attempt to repair/convert a return object of a type that was + * not expected. + * + *****************************************************************************/ + +acpi_status +acpi_ns_complex_repairs(struct acpi_predefined_data *data, + struct acpi_namespace_node *node, + acpi_status validate_status, + union acpi_operand_object **return_object_ptr) +{ + const struct acpi_repair_info *predefined; + acpi_status status; + + /* Check if this name is in the list of repairable names */ + + predefined = acpi_ns_match_repairable_name(node); + if (!predefined) { + return (validate_status); + } + + status = predefined->repair_function(data, return_object_ptr); + return (status); +} + +/****************************************************************************** + * + * FUNCTION: acpi_ns_match_repairable_name + * + * PARAMETERS: Node - Namespace node for the method/object + * + * RETURN: Pointer to entry in repair table. NULL indicates not found. + * + * DESCRIPTION: Check an object name against the repairable object list. + * + *****************************************************************************/ + +static const struct acpi_repair_info *acpi_ns_match_repairable_name(struct + acpi_namespace_node + *node) +{ + const struct acpi_repair_info *this_name; + + /* Search info table for a repairable predefined method/object name */ + + this_name = acpi_ns_repairable_names; + while (this_name->repair_function) { + if (ACPI_COMPARE_NAME(node->name.ascii, this_name->name)) { + return (this_name); + } + this_name++; + } + + return (NULL); /* Not found */ +} + +/****************************************************************************** + * + * FUNCTION: acpi_ns_repair_ALR + * + * PARAMETERS: Data - Pointer to validation data structure + * return_object_ptr - Pointer to the object returned from the + * evaluation of a method or object + * + * RETURN: Status. AE_OK if object is OK or was repaired successfully + * + * DESCRIPTION: Repair for the _ALR object. If necessary, sort the object list + * ascending by the ambient illuminance values. + * + *****************************************************************************/ + +static acpi_status +acpi_ns_repair_ALR(struct acpi_predefined_data *data, + union acpi_operand_object **return_object_ptr) +{ + union acpi_operand_object *return_object = *return_object_ptr; + acpi_status status; + + status = acpi_ns_check_sorted_list(data, return_object, 2, 1, + ACPI_SORT_ASCENDING, + "AmbientIlluminance"); + + return (status); +} + +/****************************************************************************** + * + * FUNCTION: acpi_ns_repair_TSS + * + * PARAMETERS: Data - Pointer to validation data structure + * return_object_ptr - Pointer to the object returned from the + * evaluation of a method or object + * + * RETURN: Status. AE_OK if object is OK or was repaired successfully + * + * DESCRIPTION: Repair for the _TSS object. If necessary, sort the object list + * descending by the power dissipation values. + * + *****************************************************************************/ + +static acpi_status +acpi_ns_repair_TSS(struct acpi_predefined_data *data, + union acpi_operand_object **return_object_ptr) +{ + union acpi_operand_object *return_object = *return_object_ptr; + acpi_status status; + + status = acpi_ns_check_sorted_list(data, return_object, 5, 1, + ACPI_SORT_DESCENDING, + "PowerDissipation"); + + return (status); +} + +/****************************************************************************** + * + * FUNCTION: acpi_ns_repair_PSS + * + * PARAMETERS: Data - Pointer to validation data structure + * return_object_ptr - Pointer to the object returned from the + * evaluation of a method or object + * + * RETURN: Status. AE_OK if object is OK or was repaired successfully + * + * DESCRIPTION: Repair for the _PSS object. If necessary, sort the object list + * by the CPU frequencies. Check that the power dissipation values + * are all proportional to CPU frequency (i.e., sorting by + * frequency should be the same as sorting by power.) + * + *****************************************************************************/ + +static acpi_status +acpi_ns_repair_PSS(struct acpi_predefined_data *data, + union acpi_operand_object **return_object_ptr) +{ + union acpi_operand_object *return_object = *return_object_ptr; + union acpi_operand_object **outer_elements; + u32 outer_element_count; + union acpi_operand_object **elements; + union acpi_operand_object *obj_desc; + u32 previous_value; + acpi_status status; + u32 i; + + /* + * Entries (sub-packages) in the _PSS Package must be sorted by power + * dissipation, in descending order. If it appears that the list is + * incorrectly sorted, sort it. We sort by cpu_frequency, since this + * should be proportional to the power. + */ + status = acpi_ns_check_sorted_list(data, return_object, 6, 0, + ACPI_SORT_DESCENDING, + "CpuFrequency"); + if (ACPI_FAILURE(status)) { + return (status); + } + + /* + * We now know the list is correctly sorted by CPU frequency. Check if + * the power dissipation values are proportional. + */ + previous_value = ACPI_UINT32_MAX; + outer_elements = return_object->package.elements; + outer_element_count = return_object->package.count; + + for (i = 0; i < outer_element_count; i++) { + elements = (*outer_elements)->package.elements; + obj_desc = elements[1]; /* Index1 = power_dissipation */ + + if ((u32) obj_desc->integer.value > previous_value) { + ACPI_WARN_PREDEFINED((AE_INFO, data->pathname, + data->node_flags, + "SubPackage[%u,%u] - suspicious power dissipation values", + i - 1, i)); + } + + previous_value = (u32) obj_desc->integer.value; + outer_elements++; + } + + return (AE_OK); +} + +/****************************************************************************** + * + * FUNCTION: acpi_ns_check_sorted_list + * + * PARAMETERS: Data - Pointer to validation data structure + * return_object - Pointer to the top-level returned object + * expected_count - Minimum length of each sub-package + * sort_index - Sub-package entry to sort on + * sort_direction - Ascending or descending + * sort_key_name - Name of the sort_index field + * + * RETURN: Status. AE_OK if the list is valid and is sorted correctly or + * has been repaired by sorting the list. + * + * DESCRIPTION: Check if the package list is valid and sorted correctly by the + * sort_index. If not, then sort the list. + * + *****************************************************************************/ + +static acpi_status +acpi_ns_check_sorted_list(struct acpi_predefined_data *data, + union acpi_operand_object *return_object, + u32 expected_count, + u32 sort_index, + u8 sort_direction, char *sort_key_name) +{ + u32 outer_element_count; + union acpi_operand_object **outer_elements; + union acpi_operand_object **elements; + union acpi_operand_object *obj_desc; + u32 i; + u32 previous_value; + acpi_status status; + + /* The top-level object must be a package */ + + if (return_object->common.type != ACPI_TYPE_PACKAGE) { + return (AE_AML_OPERAND_TYPE); + } + + /* + * Detect any NULL package elements and remove them from the + * package. + * + * TBD: We may want to do this for all predefined names that + * return a variable-length package of packages. + */ + status = acpi_ns_remove_null_elements(return_object); + if (status == AE_NULL_ENTRY) { + ACPI_INFO_PREDEFINED((AE_INFO, data->pathname, data->node_flags, + "NULL elements removed from package")); + + /* Exit if package is now zero length */ + + if (!return_object->package.count) { + return (AE_NULL_ENTRY); + } + } + + outer_elements = return_object->package.elements; + outer_element_count = return_object->package.count; + if (!outer_element_count) { + return (AE_AML_PACKAGE_LIMIT); + } + + previous_value = 0; + if (sort_direction == ACPI_SORT_DESCENDING) { + previous_value = ACPI_UINT32_MAX; + } + + /* Examine each subpackage */ + + for (i = 0; i < outer_element_count; i++) { + + /* Each element of the top-level package must also be a package */ + + if ((*outer_elements)->common.type != ACPI_TYPE_PACKAGE) { + return (AE_AML_OPERAND_TYPE); + } + + /* Each sub-package must have the minimum length */ + + if ((*outer_elements)->package.count < expected_count) { + return (AE_AML_PACKAGE_LIMIT); + } + + elements = (*outer_elements)->package.elements; + obj_desc = elements[sort_index]; + + if (obj_desc->common.type != ACPI_TYPE_INTEGER) { + return (AE_AML_OPERAND_TYPE); + } + + /* + * The list must be sorted in the specified order. If we detect a + * discrepancy, issue a warning and sort the entire list + */ + if (((sort_direction == ACPI_SORT_ASCENDING) && + (obj_desc->integer.value < previous_value)) || + ((sort_direction == ACPI_SORT_DESCENDING) && + (obj_desc->integer.value > previous_value))) { + status = + acpi_ns_sort_list(return_object->package.elements, + outer_element_count, sort_index, + sort_direction); + if (ACPI_FAILURE(status)) { + return (status); + } + + data->flags |= ACPI_OBJECT_REPAIRED; + + ACPI_INFO_PREDEFINED((AE_INFO, data->pathname, + data->node_flags, + "Repaired unsorted list - now sorted by %s", + sort_key_name)); + return (AE_OK); + } + + previous_value = (u32) obj_desc->integer.value; + outer_elements++; + } + + return (AE_OK); +} + +/****************************************************************************** + * + * FUNCTION: acpi_ns_remove_null_elements + * + * PARAMETERS: obj_desc - A Package object + * + * RETURN: Status. AE_NULL_ENTRY means that one or more elements were + * removed. + * + * DESCRIPTION: Remove all NULL package elements and update the package count. + * + *****************************************************************************/ + +static acpi_status +acpi_ns_remove_null_elements(union acpi_operand_object *obj_desc) +{ + union acpi_operand_object **source; + union acpi_operand_object **dest; + acpi_status status = AE_OK; + u32 count; + u32 new_count; + u32 i; + + count = obj_desc->package.count; + new_count = count; + + source = obj_desc->package.elements; + dest = source; + + /* Examine all elements of the package object */ + + for (i = 0; i < count; i++) { + if (!*source) { + status = AE_NULL_ENTRY; + new_count--; + } else { + *dest = *source; + dest++; + } + source++; + } + + if (status == AE_NULL_ENTRY) { + + /* NULL terminate list and update the package count */ + + *dest = NULL; + obj_desc->package.count = new_count; + } + + return (status); +} + +/****************************************************************************** + * + * FUNCTION: acpi_ns_sort_list + * + * PARAMETERS: Elements - Package object element list + * Count - Element count for above + * Index - Sort by which package element + * sort_direction - Ascending or Descending sort + * + * RETURN: Status + * + * DESCRIPTION: Sort the objects that are in a package element list. + * + * NOTE: Assumes that all NULL elements have been removed from the package. + * + *****************************************************************************/ + +static acpi_status +acpi_ns_sort_list(union acpi_operand_object **elements, + u32 count, u32 index, u8 sort_direction) +{ + union acpi_operand_object *obj_desc1; + union acpi_operand_object *obj_desc2; + union acpi_operand_object *temp_obj; + u32 i; + u32 j; + + /* Simple bubble sort */ + + for (i = 1; i < count; i++) { + for (j = (count - 1); j >= i; j--) { + obj_desc1 = elements[j - 1]->package.elements[index]; + obj_desc2 = elements[j]->package.elements[index]; + + if (((sort_direction == ACPI_SORT_ASCENDING) && + (obj_desc1->integer.value > + obj_desc2->integer.value)) + || ((sort_direction == ACPI_SORT_DESCENDING) + && (obj_desc1->integer.value < + obj_desc2->integer.value))) { + temp_obj = elements[j - 1]; + elements[j - 1] = elements[j]; + elements[j] = temp_obj; + } + } + } + + return (AE_OK); +} diff --git a/drivers/acpi/acpica/nswalk.c b/drivers/acpi/acpica/nswalk.c index 35539df5c75d..d7e6b52b4482 100644 --- a/drivers/acpi/acpica/nswalk.c +++ b/drivers/acpi/acpica/nswalk.c @@ -165,24 +165,27 @@ struct acpi_namespace_node *acpi_ns_get_next_node_typed(acpi_object_type type, * max_depth - Depth to which search is to reach * Flags - Whether to unlock the NS before invoking * the callback routine - * user_function - Called when an object of "Type" is found - * Context - Passed to user function - * return_value - from the user_function if terminated early. - * Otherwise, returns NULL. + * pre_order_visit - Called during tree pre-order visit + * when an object of "Type" is found + * post_order_visit - Called during tree post-order visit + * when an object of "Type" is found + * Context - Passed to user function(s) above + * return_value - from the user_function if terminated + * early. Otherwise, returns NULL. * RETURNS: Status * * DESCRIPTION: Performs a modified depth-first walk of the namespace tree, * starting (and ending) at the node specified by start_handle. - * The user_function is called whenever a node that matches - * the type parameter is found. If the user function returns + * The callback function is called whenever a node that matches + * the type parameter is found. If the callback function returns * a non-zero value, the search is terminated immediately and * this value is returned to the caller. * * The point of this procedure is to provide a generic namespace * walk routine that can be called from multiple places to - * provide multiple services; the User Function can be tailored - * to each task, whether it is a print function, a compare - * function, etc. + * provide multiple services; the callback function(s) can be + * tailored to each task, whether it is a print function, + * a compare function, etc. * ******************************************************************************/ @@ -191,7 +194,8 @@ acpi_ns_walk_namespace(acpi_object_type type, acpi_handle start_node, u32 max_depth, u32 flags, - acpi_walk_callback user_function, + acpi_walk_callback pre_order_visit, + acpi_walk_callback post_order_visit, void *context, void **return_value) { acpi_status status; @@ -200,6 +204,7 @@ acpi_ns_walk_namespace(acpi_object_type type, struct acpi_namespace_node *parent_node; acpi_object_type child_type; u32 level; + u8 node_previously_visited = FALSE; ACPI_FUNCTION_TRACE(ns_walk_namespace); @@ -212,7 +217,7 @@ acpi_ns_walk_namespace(acpi_object_type type, /* Null child means "get first node" */ parent_node = start_node; - child_node = NULL; + child_node = acpi_ns_get_next_node(parent_node, NULL); child_type = ACPI_TYPE_ANY; level = 1; @@ -221,102 +226,129 @@ acpi_ns_walk_namespace(acpi_object_type type, * started. When Level is zero, the loop is done because we have * bubbled up to (and passed) the original parent handle (start_entry) */ - while (level > 0) { + while (level > 0 && child_node) { + status = AE_OK; - /* Get the next node in this scope. Null if not found */ + /* Found next child, get the type if we are not searching for ANY */ - status = AE_OK; - child_node = acpi_ns_get_next_node(parent_node, child_node); - if (child_node) { + if (type != ACPI_TYPE_ANY) { + child_type = child_node->type; + } - /* Found next child, get the type if we are not searching for ANY */ + /* + * Ignore all temporary namespace nodes (created during control + * method execution) unless told otherwise. These temporary nodes + * can cause a race condition because they can be deleted during + * the execution of the user function (if the namespace is + * unlocked before invocation of the user function.) Only the + * debugger namespace dump will examine the temporary nodes. + */ + if ((child_node->flags & ANOBJ_TEMPORARY) && + !(flags & ACPI_NS_WALK_TEMP_NODES)) { + status = AE_CTRL_DEPTH; + } - if (type != ACPI_TYPE_ANY) { - child_type = child_node->type; - } + /* Type must match requested type */ + else if (child_type == type) { /* - * Ignore all temporary namespace nodes (created during control - * method execution) unless told otherwise. These temporary nodes - * can cause a race condition because they can be deleted during - * the execution of the user function (if the namespace is - * unlocked before invocation of the user function.) Only the - * debugger namespace dump will examine the temporary nodes. + * Found a matching node, invoke the user callback function. + * Unlock the namespace if flag is set. */ - if ((child_node->flags & ANOBJ_TEMPORARY) && - !(flags & ACPI_NS_WALK_TEMP_NODES)) { - status = AE_CTRL_DEPTH; + if (flags & ACPI_NS_WALK_UNLOCK) { + mutex_status = + acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(mutex_status)) { + return_ACPI_STATUS(mutex_status); + } } - /* Type must match requested type */ - - else if (child_type == type) { - /* - * Found a matching node, invoke the user callback function. - * Unlock the namespace if flag is set. - */ - if (flags & ACPI_NS_WALK_UNLOCK) { - mutex_status = - acpi_ut_release_mutex - (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE(mutex_status)) { - return_ACPI_STATUS - (mutex_status); - } + /* + * Invoke the user function, either pre-order or post-order + * or both. + */ + if (!node_previously_visited) { + if (pre_order_visit) { + status = + pre_order_visit(child_node, level, + context, + return_value); } + } else { + if (post_order_visit) { + status = + post_order_visit(child_node, level, + context, + return_value); + } + } - status = - user_function(child_node, level, context, - return_value); - - if (flags & ACPI_NS_WALK_UNLOCK) { - mutex_status = - acpi_ut_acquire_mutex - (ACPI_MTX_NAMESPACE); - if (ACPI_FAILURE(mutex_status)) { - return_ACPI_STATUS - (mutex_status); - } + if (flags & ACPI_NS_WALK_UNLOCK) { + mutex_status = + acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(mutex_status)) { + return_ACPI_STATUS(mutex_status); } + } - switch (status) { - case AE_OK: - case AE_CTRL_DEPTH: + switch (status) { + case AE_OK: + case AE_CTRL_DEPTH: - /* Just keep going */ - break; + /* Just keep going */ + break; - case AE_CTRL_TERMINATE: + case AE_CTRL_TERMINATE: - /* Exit now, with OK status */ + /* Exit now, with OK status */ - return_ACPI_STATUS(AE_OK); + return_ACPI_STATUS(AE_OK); - default: + default: - /* All others are valid exceptions */ + /* All others are valid exceptions */ - return_ACPI_STATUS(status); - } + return_ACPI_STATUS(status); + } + } + + /* + * Depth first search: Attempt to go down another level in the + * namespace if we are allowed to. Don't go any further if we have + * reached the caller specified maximum depth or if the user + * function has specified that the maximum depth has been reached. + */ + if (!node_previously_visited && + (level < max_depth) && (status != AE_CTRL_DEPTH)) { + if (child_node->child) { + + /* There is at least one child of this node, visit it */ + + level++; + parent_node = child_node; + child_node = + acpi_ns_get_next_node(parent_node, NULL); + continue; } + } - /* - * Depth first search: Attempt to go down another level in the - * namespace if we are allowed to. Don't go any further if we have - * reached the caller specified maximum depth or if the user - * function has specified that the maximum depth has been reached. - */ - if ((level < max_depth) && (status != AE_CTRL_DEPTH)) { - if (child_node->child) { + /* No more children, re-visit this node */ - /* There is at least one child of this node, visit it */ + if (!node_previously_visited) { + node_previously_visited = TRUE; + continue; + } - level++; - parent_node = child_node; - child_node = NULL; - } - } - } else { + /* No more children, visit peers */ + + child_node = acpi_ns_get_next_node(parent_node, child_node); + if (child_node) { + node_previously_visited = FALSE; + } + + /* No peers, re-visit parent */ + + else { /* * No more children of this node (acpi_ns_get_next_node failed), go * back upwards in the namespace tree to the node's parent. @@ -324,6 +356,8 @@ acpi_ns_walk_namespace(acpi_object_type type, level--; child_node = parent_node; parent_node = acpi_ns_get_parent_node(parent_node); + + node_previously_visited = TRUE; } } diff --git a/drivers/acpi/acpica/nsxfeval.c b/drivers/acpi/acpica/nsxfeval.c index 4929dbdbc8f0..f2bd1da77001 100644 --- a/drivers/acpi/acpica/nsxfeval.c +++ b/drivers/acpi/acpica/nsxfeval.c @@ -433,8 +433,11 @@ static void acpi_ns_resolve_references(struct acpi_evaluate_info *info) * PARAMETERS: Type - acpi_object_type to search for * start_object - Handle in namespace where search begins * max_depth - Depth to which search is to reach - * user_function - Called when an object of "Type" is found - * Context - Passed to user function + * pre_order_visit - Called during tree pre-order visit + * when an object of "Type" is found + * post_order_visit - Called during tree post-order visit + * when an object of "Type" is found + * Context - Passed to user function(s) above * return_value - Location where return value of * user_function is put if terminated early * @@ -443,16 +446,16 @@ static void acpi_ns_resolve_references(struct acpi_evaluate_info *info) * * DESCRIPTION: Performs a modified depth-first walk of the namespace tree, * starting (and ending) at the object specified by start_handle. - * The user_function is called whenever an object that matches - * the type parameter is found. If the user function returns + * The callback function is called whenever an object that matches + * the type parameter is found. If the callback function returns * a non-zero value, the search is terminated immediately and this * value is returned to the caller. * * The point of this procedure is to provide a generic namespace * walk routine that can be called from multiple places to - * provide multiple services; the User Function can be tailored - * to each task, whether it is a print function, a compare - * function, etc. + * provide multiple services; the callback function(s) can be + * tailored to each task, whether it is a print function, + * a compare function, etc. * ******************************************************************************/ @@ -460,7 +463,8 @@ acpi_status acpi_walk_namespace(acpi_object_type type, acpi_handle start_object, u32 max_depth, - acpi_walk_callback user_function, + acpi_walk_callback pre_order_visit, + acpi_walk_callback post_order_visit, void *context, void **return_value) { acpi_status status; @@ -469,7 +473,8 @@ acpi_walk_namespace(acpi_object_type type, /* Parameter validation */ - if ((type > ACPI_TYPE_LOCAL_MAX) || (!max_depth) || (!user_function)) { + if ((type > ACPI_TYPE_LOCAL_MAX) || + (!max_depth) || (!pre_order_visit && !post_order_visit)) { return_ACPI_STATUS(AE_BAD_PARAMETER); } @@ -501,8 +506,9 @@ acpi_walk_namespace(acpi_object_type type, } status = acpi_ns_walk_namespace(type, start_object, max_depth, - ACPI_NS_WALK_UNLOCK, user_function, - context, return_value); + ACPI_NS_WALK_UNLOCK, pre_order_visit, + post_order_visit, context, + return_value); (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); @@ -681,8 +687,8 @@ acpi_get_devices(const char *HID, status = acpi_ns_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, ACPI_NS_WALK_UNLOCK, - acpi_ns_get_device_callback, &info, - return_value); + acpi_ns_get_device_callback, NULL, + &info, return_value); (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); return_ACPI_STATUS(status); diff --git a/drivers/acpi/acpica/psloop.c b/drivers/acpi/acpica/psloop.c index cd7995b3aed4..0988e4a8901d 100644 --- a/drivers/acpi/acpica/psloop.c +++ b/drivers/acpi/acpica/psloop.c @@ -87,7 +87,8 @@ acpi_ps_complete_final_op(struct acpi_walk_state *walk_state, union acpi_parse_object *op, acpi_status status); static void -acpi_ps_link_module_code(u8 *aml_start, u32 aml_length, acpi_owner_id owner_id); +acpi_ps_link_module_code(union acpi_parse_object *parent_op, + u8 *aml_start, u32 aml_length, acpi_owner_id owner_id); /******************************************************************************* * @@ -479,11 +480,14 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state, */ if (walk_state->pass_number == ACPI_IMODE_LOAD_PASS1) { - acpi_ps_link_module_code(aml_op_start, - walk_state-> + acpi_ps_link_module_code(op->common. + parent, + aml_op_start, + (u32) + (walk_state-> parser_state. pkg_end - - aml_op_start, + aml_op_start), walk_state-> owner_id); } @@ -598,7 +602,8 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state, * * FUNCTION: acpi_ps_link_module_code * - * PARAMETERS: aml_start - Pointer to the AML + * PARAMETERS: parent_op - Parent parser op + * aml_start - Pointer to the AML * aml_length - Length of executable AML * owner_id - owner_id of module level code * @@ -611,11 +616,13 @@ acpi_ps_get_arguments(struct acpi_walk_state *walk_state, ******************************************************************************/ static void -acpi_ps_link_module_code(u8 *aml_start, u32 aml_length, acpi_owner_id owner_id) +acpi_ps_link_module_code(union acpi_parse_object *parent_op, + u8 *aml_start, u32 aml_length, acpi_owner_id owner_id) { union acpi_operand_object *prev; union acpi_operand_object *next; union acpi_operand_object *method_obj; + struct acpi_namespace_node *parent_node; /* Get the tail of the list */ @@ -639,11 +646,24 @@ acpi_ps_link_module_code(u8 *aml_start, u32 aml_length, acpi_owner_id owner_id) return; } + if (parent_op->common.node) { + parent_node = parent_op->common.node; + } else { + parent_node = acpi_gbl_root_node; + } + method_obj->method.aml_start = aml_start; method_obj->method.aml_length = aml_length; method_obj->method.owner_id = owner_id; method_obj->method.flags |= AOPOBJ_MODULE_LEVEL; + /* + * Save the parent node in next_object. This is cheating, but we + * don't want to expand the method object. + */ + method_obj->method.next_object = + ACPI_CAST_PTR(union acpi_operand_object, parent_node); + if (!prev) { acpi_gbl_module_code_list = method_obj; } else { diff --git a/drivers/acpi/acpica/psparse.c b/drivers/acpi/acpica/psparse.c index 70838e9b608c..4df8f139026c 100644 --- a/drivers/acpi/acpica/psparse.c +++ b/drivers/acpi/acpica/psparse.c @@ -610,17 +610,13 @@ acpi_status acpi_ps_parse_aml(struct acpi_walk_state *walk_state) implicit_return_obj) { previous_walk_state-> implicit_return_obj = - acpi_ut_create_internal_object - (ACPI_TYPE_INTEGER); + acpi_ut_create_integer_object + ((u64) 0); if (!previous_walk_state-> implicit_return_obj) { return_ACPI_STATUS (AE_NO_MEMORY); } - - previous_walk_state-> - implicit_return_obj-> - integer.value = 0; } /* Restart the calling control method */ diff --git a/drivers/acpi/acpica/psxface.c b/drivers/acpi/acpica/psxface.c index dd9731c29a79..12934ad6da8e 100644 --- a/drivers/acpi/acpica/psxface.c +++ b/drivers/acpi/acpica/psxface.c @@ -306,14 +306,12 @@ acpi_status acpi_ps_execute_method(struct acpi_evaluate_info *info) */ if (acpi_gbl_enable_interpreter_slack) { walk_state->implicit_return_obj = - acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + acpi_ut_create_integer_object((u64) 0); if (!walk_state->implicit_return_obj) { status = AE_NO_MEMORY; acpi_ds_delete_walk_state(walk_state); goto cleanup; } - - walk_state->implicit_return_obj->integer.value = 0; } /* Parse the AML */ diff --git a/drivers/acpi/acpica/utmisc.c b/drivers/acpi/acpica/utmisc.c index 61f6315fce9f..6c6a5137b728 100644 --- a/drivers/acpi/acpica/utmisc.c +++ b/drivers/acpi/acpica/utmisc.c @@ -1161,3 +1161,45 @@ acpi_ut_predefined_warning(const char *module_name, ACPI_COMMON_MSG_SUFFIX; va_end(args); } + +/******************************************************************************* + * + * FUNCTION: acpi_ut_predefined_info + * + * PARAMETERS: module_name - Caller's module name (for error output) + * line_number - Caller's line number (for error output) + * Pathname - Full pathname to the node + * node_flags - From Namespace node for the method/object + * Format - Printf format string + additional args + * + * RETURN: None + * + * DESCRIPTION: Info messages for the predefined validation module. Messages + * are only emitted the first time a problem with a particular + * method/object is detected. This prevents a flood of + * messages for methods that are repeatedly evaluated. + * + ******************************************************************************/ + +void ACPI_INTERNAL_VAR_XFACE +acpi_ut_predefined_info(const char *module_name, + u32 line_number, + char *pathname, u8 node_flags, const char *format, ...) +{ + va_list args; + + /* + * Warning messages for this method/object will be disabled after the + * first time a validation fails or an object is successfully repaired. + */ + if (node_flags & ANOBJ_EVALUATED) { + return; + } + + acpi_os_printf("ACPI Info for %s: ", pathname); + + va_start(args, format); + acpi_os_vprintf(format, args); + ACPI_COMMON_MSG_SUFFIX; + va_end(args); +} diff --git a/drivers/acpi/acpica/utobject.c b/drivers/acpi/acpica/utobject.c index 0207b625274a..42e658b543f1 100644 --- a/drivers/acpi/acpica/utobject.c +++ b/drivers/acpi/acpica/utobject.c @@ -190,6 +190,35 @@ union acpi_operand_object *acpi_ut_create_package_object(u32 count) /******************************************************************************* * + * FUNCTION: acpi_ut_create_integer_object + * + * PARAMETERS: initial_value - Initial value for the integer + * + * RETURN: Pointer to a new Integer object, null on failure + * + * DESCRIPTION: Create an initialized integer object + * + ******************************************************************************/ + +union acpi_operand_object *acpi_ut_create_integer_object(u64 initial_value) +{ + union acpi_operand_object *integer_desc; + + ACPI_FUNCTION_TRACE(ut_create_integer_object); + + /* Create and initialize a new integer object */ + + integer_desc = acpi_ut_create_internal_object(ACPI_TYPE_INTEGER); + if (!integer_desc) { + return_PTR(NULL); + } + + integer_desc->integer.value = initial_value; + return_PTR(integer_desc); +} + +/******************************************************************************* + * * FUNCTION: acpi_ut_create_buffer_object * * PARAMETERS: buffer_size - Size of buffer to be created diff --git a/drivers/acpi/blacklist.c b/drivers/acpi/blacklist.c index e56b2a7b53db..23e5a0519af5 100644 --- a/drivers/acpi/blacklist.c +++ b/drivers/acpi/blacklist.c @@ -224,6 +224,7 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { * _OSI(Linux) helps sound * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad R61"), * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T61"), + * T400, T500 * _OSI(Linux) has Linux specific hooks * DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), * _OSI(Linux) is a NOP: @@ -254,6 +255,22 @@ static struct dmi_system_id acpi_osi_dmi_table[] __initdata = { DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad X61"), }, }, + { + .callback = dmi_enable_osi_linux, + .ident = "Lenovo ThinkPad T400", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T400"), + }, + }, + { + .callback = dmi_enable_osi_linux, + .ident = "Lenovo ThinkPad T500", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"), + DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad T500"), + }, + }, {} }; diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index 135fbfe1825c..741191524353 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -94,36 +94,33 @@ int acpi_bus_get_device(acpi_handle handle, struct acpi_device **device) EXPORT_SYMBOL(acpi_bus_get_device); -int acpi_bus_get_status(struct acpi_device *device) +acpi_status acpi_bus_get_status_handle(acpi_handle handle, + unsigned long long *sta) { - acpi_status status = AE_OK; - unsigned long long sta = 0; - + acpi_status status; - if (!device) - return -EINVAL; + status = acpi_evaluate_integer(handle, "_STA", NULL, sta); + if (ACPI_SUCCESS(status)) + return AE_OK; - /* - * Evaluate _STA if present. - */ - if (device->flags.dynamic_status) { - status = - acpi_evaluate_integer(device->handle, "_STA", NULL, &sta); - if (ACPI_FAILURE(status)) - return -ENODEV; - STRUCT_TO_INT(device->status) = (int)sta; + if (status == AE_NOT_FOUND) { + *sta = ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | + ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING; + return AE_OK; } + return status; +} - /* - * According to ACPI spec some device can be present and functional - * even if the parent is not present but functional. - * In such conditions the child device should not inherit the status - * from the parent. - */ - else - STRUCT_TO_INT(device->status) = - ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | - ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING; +int acpi_bus_get_status(struct acpi_device *device) +{ + acpi_status status; + unsigned long long sta; + + status = acpi_bus_get_status_handle(device->handle, &sta); + if (ACPI_FAILURE(status)) + return -ENODEV; + + STRUCT_TO_INT(device->status) = (int) sta; if (device->status.functional && !device->status.present) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: " @@ -135,10 +132,8 @@ int acpi_bus_get_status(struct acpi_device *device) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]\n", device->pnp.bus_id, (u32) STRUCT_TO_INT(device->status))); - return 0; } - EXPORT_SYMBOL(acpi_bus_get_status); void acpi_bus_private_data_handler(acpi_handle handle, diff --git a/drivers/acpi/button.c b/drivers/acpi/button.c index d295bdccc09c..0c9c6a9a002c 100644 --- a/drivers/acpi/button.c +++ b/drivers/acpi/button.c @@ -115,6 +115,9 @@ static const struct file_operations acpi_button_state_fops = { .release = single_release, }; +static BLOCKING_NOTIFIER_HEAD(acpi_lid_notifier); +static struct acpi_device *lid_device; + /* -------------------------------------------------------------------------- FS Interface (/proc) -------------------------------------------------------------------------- */ @@ -231,11 +234,41 @@ static int acpi_button_remove_fs(struct acpi_device *device) /* -------------------------------------------------------------------------- Driver Interface -------------------------------------------------------------------------- */ +int acpi_lid_notifier_register(struct notifier_block *nb) +{ + return blocking_notifier_chain_register(&acpi_lid_notifier, nb); +} +EXPORT_SYMBOL(acpi_lid_notifier_register); + +int acpi_lid_notifier_unregister(struct notifier_block *nb) +{ + return blocking_notifier_chain_unregister(&acpi_lid_notifier, nb); +} +EXPORT_SYMBOL(acpi_lid_notifier_unregister); + +int acpi_lid_open(void) +{ + acpi_status status; + unsigned long long state; + + if (!lid_device) + return -ENODEV; + + status = acpi_evaluate_integer(lid_device->handle, "_LID", NULL, + &state); + if (ACPI_FAILURE(status)) + return -ENODEV; + + return !!state; +} +EXPORT_SYMBOL(acpi_lid_open); + static int acpi_lid_send_state(struct acpi_device *device) { struct acpi_button *button = acpi_driver_data(device); unsigned long long state; acpi_status status; + int ret; status = acpi_evaluate_integer(device->handle, "_LID", NULL, &state); if (ACPI_FAILURE(status)) @@ -244,7 +277,12 @@ static int acpi_lid_send_state(struct acpi_device *device) /* input layer checks if event is redundant */ input_report_switch(button->input, SW_LID, !state); input_sync(button->input); - return 0; + + ret = blocking_notifier_call_chain(&acpi_lid_notifier, state, device); + if (ret == NOTIFY_DONE) + ret = blocking_notifier_call_chain(&acpi_lid_notifier, state, + device); + return ret; } static void acpi_button_notify(struct acpi_device *device, u32 event) @@ -366,8 +404,14 @@ static int acpi_button_add(struct acpi_device *device) error = input_register_device(input); if (error) goto err_remove_fs; - if (button->type == ACPI_BUTTON_TYPE_LID) + if (button->type == ACPI_BUTTON_TYPE_LID) { acpi_lid_send_state(device); + /* + * This assumes there's only one lid device, or if there are + * more we only care about the last one... + */ + lid_device = device; + } if (device->wakeup.flags.valid) { /* Button's GPE is run-wake GPE */ diff --git a/drivers/acpi/container.c b/drivers/acpi/container.c index 642bb305cb65..5faf6c21257d 100644 --- a/drivers/acpi/container.c +++ b/drivers/acpi/container.c @@ -258,7 +258,7 @@ static int __init acpi_container_init(void) acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, - container_walk_namespace_cb, &action, NULL); + container_walk_namespace_cb, NULL, &action, NULL); return (0); } @@ -271,7 +271,7 @@ static void __exit acpi_container_exit(void) acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, - container_walk_namespace_cb, &action, NULL); + container_walk_namespace_cb, NULL, &action, NULL); acpi_bus_unregister_driver(&acpi_container_driver); diff --git a/drivers/acpi/dock.c b/drivers/acpi/dock.c index 3a2cfefc71ab..30be3c148f7e 100644 --- a/drivers/acpi/dock.c +++ b/drivers/acpi/dock.c @@ -67,7 +67,7 @@ struct dock_station { struct list_head dependent_devices; struct list_head hotplug_devices; - struct list_head sibiling; + struct list_head sibling; struct platform_device *dock_device; }; static LIST_HEAD(dock_stations); @@ -275,7 +275,7 @@ int is_dock_device(acpi_handle handle) if (is_dock(handle)) return 1; - list_for_each_entry(dock_station, &dock_stations, sibiling) { + list_for_each_entry(dock_station, &dock_stations, sibling) { if (find_dock_dependent_device(dock_station, handle)) return 1; } @@ -619,7 +619,7 @@ register_hotplug_dock_device(acpi_handle handle, struct acpi_dock_ops *ops, * make sure this handle is for a device dependent on the dock, * this would include the dock station itself */ - list_for_each_entry(dock_station, &dock_stations, sibiling) { + list_for_each_entry(dock_station, &dock_stations, sibling) { /* * An ATA bay can be in a dock and itself can be ejected * seperately, so there are two 'dock stations' which need the @@ -651,7 +651,7 @@ void unregister_hotplug_dock_device(acpi_handle handle) if (!dock_station_count) return; - list_for_each_entry(dock_station, &dock_stations, sibiling) { + list_for_each_entry(dock_station, &dock_stations, sibling) { dd = find_dock_dependent_device(dock_station, handle); if (dd) dock_del_hotplug_device(dock_station, dd); @@ -787,7 +787,7 @@ static int acpi_dock_notifier_call(struct notifier_block *this, if (event != ACPI_NOTIFY_BUS_CHECK && event != ACPI_NOTIFY_DEVICE_CHECK && event != ACPI_NOTIFY_EJECT_REQUEST) return 0; - list_for_each_entry(dock_station, &dock_stations, sibiling) { + list_for_each_entry(dock_station, &dock_stations, sibling) { if (dock_station->handle == handle) { struct dock_data *dock_data; @@ -958,7 +958,7 @@ static int dock_add(acpi_handle handle) dock_station->last_dock_time = jiffies - HZ; INIT_LIST_HEAD(&dock_station->dependent_devices); INIT_LIST_HEAD(&dock_station->hotplug_devices); - INIT_LIST_HEAD(&dock_station->sibiling); + INIT_LIST_HEAD(&dock_station->sibling); spin_lock_init(&dock_station->dd_lock); mutex_init(&dock_station->hp_lock); ATOMIC_INIT_NOTIFIER_HEAD(&dock_notifier_list); @@ -1030,8 +1030,8 @@ static int dock_add(acpi_handle handle) /* Find dependent devices */ acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, find_dock_devices, dock_station, - NULL); + ACPI_UINT32_MAX, find_dock_devices, NULL, + dock_station, NULL); /* add the dock station as a device dependent on itself */ dd = alloc_dock_dependent_device(handle); @@ -1044,7 +1044,7 @@ static int dock_add(acpi_handle handle) add_dock_dependent_device(dock_station, dd); dock_station_count++; - list_add(&dock_station->sibiling, &dock_stations); + list_add(&dock_station->sibling, &dock_stations); return 0; dock_add_err_unregister: @@ -1127,11 +1127,11 @@ static int __init dock_init(void) /* look for a dock station */ acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, find_dock, NULL, NULL); + ACPI_UINT32_MAX, find_dock, NULL, NULL, NULL); /* look for bay */ acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, find_bay, NULL, NULL); + ACPI_UINT32_MAX, find_bay, NULL, NULL, NULL); if (!dock_station_count) { printk(KERN_INFO PREFIX "No dock devices found.\n"); return 0; @@ -1149,7 +1149,7 @@ static void __exit dock_exit(void) struct dock_station *tmp; unregister_acpi_bus_notifier(&dock_acpi_notifier); - list_for_each_entry_safe(dock_station, tmp, &dock_stations, sibiling) + list_for_each_entry_safe(dock_station, tmp, &dock_stations, sibling) dock_remove(dock_station); } diff --git a/drivers/acpi/ec.c b/drivers/acpi/ec.c index f70796081c4c..75b147f5c8fd 100644 --- a/drivers/acpi/ec.c +++ b/drivers/acpi/ec.c @@ -119,6 +119,8 @@ static struct acpi_ec { } *boot_ec, *first_ec; static int EC_FLAGS_MSI; /* Out-of-spec MSI controller */ +static int EC_FLAGS_VALIDATE_ECDT; /* ASUStec ECDTs need to be validated */ +static int EC_FLAGS_SKIP_DSDT_SCAN; /* Not all BIOS survive early DSDT scan */ /* -------------------------------------------------------------------------- Transaction Management @@ -232,10 +234,8 @@ static int ec_poll(struct acpi_ec *ec) } advance_transaction(ec, acpi_ec_read_status(ec)); } while (time_before(jiffies, delay)); - if (!ec->curr->irq_count || - (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF)) + if (acpi_ec_read_status(ec) & ACPI_EC_FLAG_IBF) break; - /* try restart command if we get any false interrupts */ pr_debug(PREFIX "controller reset, restart transaction\n"); spin_lock_irqsave(&ec->curr_lock, flags); start_transaction(ec); @@ -820,7 +820,7 @@ static int acpi_ec_add(struct acpi_device *device) /* Find and register all query methods */ acpi_walk_namespace(ACPI_TYPE_METHOD, ec->handle, 1, - acpi_ec_register_query_methods, ec, NULL); + acpi_ec_register_query_methods, NULL, ec, NULL); if (!first_ec) first_ec = ec; @@ -899,6 +899,44 @@ static const struct acpi_device_id ec_device_ids[] = { {"", 0}, }; +/* Some BIOS do not survive early DSDT scan, skip it */ +static int ec_skip_dsdt_scan(const struct dmi_system_id *id) +{ + EC_FLAGS_SKIP_DSDT_SCAN = 1; + return 0; +} + +/* ASUStek often supplies us with broken ECDT, validate it */ +static int ec_validate_ecdt(const struct dmi_system_id *id) +{ + EC_FLAGS_VALIDATE_ECDT = 1; + return 0; +} + +/* MSI EC needs special treatment, enable it */ +static int ec_flag_msi(const struct dmi_system_id *id) +{ + EC_FLAGS_MSI = 1; + EC_FLAGS_VALIDATE_ECDT = 1; + return 0; +} + +static struct dmi_system_id __initdata ec_dmi_table[] = { + { + ec_skip_dsdt_scan, "Compal JFL92", { + DMI_MATCH(DMI_BIOS_VENDOR, "COMPAL"), + DMI_MATCH(DMI_BOARD_NAME, "JFL92") }, NULL}, + { + ec_flag_msi, "MSI hardware", { + DMI_MATCH(DMI_BIOS_VENDOR, "Micro-Star"), + DMI_MATCH(DMI_CHASSIS_VENDOR, "MICRO-Star") }, NULL}, + { + ec_validate_ecdt, "ASUS hardware", { + DMI_MATCH(DMI_BIOS_VENDOR, "ASUS") }, NULL}, + {}, +}; + + int __init acpi_ec_ecdt_probe(void) { acpi_status status; @@ -911,11 +949,7 @@ int __init acpi_ec_ecdt_probe(void) /* * Generate a boot ec context */ - if (dmi_name_in_vendors("Micro-Star") || - dmi_name_in_vendors("Notebook")) { - pr_info(PREFIX "Enabling special treatment for EC from MSI.\n"); - EC_FLAGS_MSI = 1; - } + dmi_check_system(ec_dmi_table); status = acpi_get_table(ACPI_SIG_ECDT, 1, (struct acpi_table_header **)&ecdt_ptr); if (ACPI_SUCCESS(status)) { @@ -926,7 +960,7 @@ int __init acpi_ec_ecdt_probe(void) boot_ec->handle = ACPI_ROOT_OBJECT; acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle); /* Don't trust ECDT, which comes from ASUSTek */ - if (!dmi_name_in_vendors("ASUS") && EC_FLAGS_MSI == 0) + if (!EC_FLAGS_VALIDATE_ECDT) goto install; saved_ec = kmalloc(sizeof(struct acpi_ec), GFP_KERNEL); if (!saved_ec) @@ -934,6 +968,10 @@ int __init acpi_ec_ecdt_probe(void) memcpy(saved_ec, boot_ec, sizeof(struct acpi_ec)); /* fall through */ } + + if (EC_FLAGS_SKIP_DSDT_SCAN) + return -ENODEV; + /* This workaround is needed only on some broken machines, * which require early EC, but fail to provide ECDT */ printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n"); diff --git a/drivers/acpi/glue.c b/drivers/acpi/glue.c index c6645f26224b..4c8fcff662cf 100644 --- a/drivers/acpi/glue.c +++ b/drivers/acpi/glue.c @@ -113,7 +113,7 @@ acpi_handle acpi_get_child(acpi_handle parent, acpi_integer address) if (!parent) return NULL; acpi_walk_namespace(ACPI_TYPE_DEVICE, parent, - 1, do_acpi_find_child, &find, NULL); + 1, do_acpi_find_child, NULL, &find, NULL); return find.handle; } diff --git a/drivers/acpi/hest.c b/drivers/acpi/hest.c new file mode 100644 index 000000000000..4bb18c980ac6 --- /dev/null +++ b/drivers/acpi/hest.c @@ -0,0 +1,135 @@ +#include <linux/acpi.h> +#include <linux/pci.h> + +#define PREFIX "ACPI: " + +static inline unsigned long parse_acpi_hest_ia_machine_check(struct acpi_hest_ia_machine_check *p) +{ + return sizeof(*p) + + (sizeof(struct acpi_hest_ia_error_bank) * p->num_hardware_banks); +} + +static inline unsigned long parse_acpi_hest_ia_corrected(struct acpi_hest_ia_corrected *p) +{ + return sizeof(*p) + + (sizeof(struct acpi_hest_ia_error_bank) * p->num_hardware_banks); +} + +static inline unsigned long parse_acpi_hest_ia_nmi(struct acpi_hest_ia_nmi *p) +{ + return sizeof(*p); +} + +static inline unsigned long parse_acpi_hest_generic(struct acpi_hest_generic *p) +{ + return sizeof(*p); +} + +static inline unsigned int hest_match_pci(struct acpi_hest_aer_common *p, struct pci_dev *pci) +{ + return (0 == pci_domain_nr(pci->bus) && + p->bus == pci->bus->number && + p->device == PCI_SLOT(pci->devfn) && + p->function == PCI_FUNC(pci->devfn)); +} + +static unsigned long parse_acpi_hest_aer(void *hdr, int type, struct pci_dev *pci, int *firmware_first) +{ + struct acpi_hest_aer_common *p = hdr + sizeof(struct acpi_hest_header); + unsigned long rc=0; + u8 pcie_type = 0; + u8 bridge = 0; + switch (type) { + case ACPI_HEST_TYPE_AER_ROOT_PORT: + rc = sizeof(struct acpi_hest_aer_root); + pcie_type = PCI_EXP_TYPE_ROOT_PORT; + break; + case ACPI_HEST_TYPE_AER_ENDPOINT: + rc = sizeof(struct acpi_hest_aer); + pcie_type = PCI_EXP_TYPE_ENDPOINT; + break; + case ACPI_HEST_TYPE_AER_BRIDGE: + rc = sizeof(struct acpi_hest_aer_bridge); + if ((pci->class >> 16) == PCI_BASE_CLASS_BRIDGE) + bridge = 1; + break; + } + + if (p->flags & ACPI_HEST_GLOBAL) { + if ((pci->is_pcie && (pci->pcie_type == pcie_type)) || bridge) + *firmware_first = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST); + } + else + if (hest_match_pci(p, pci)) + *firmware_first = !!(p->flags & ACPI_HEST_FIRMWARE_FIRST); + return rc; +} + +static int acpi_hest_firmware_first(struct acpi_table_header *stdheader, struct pci_dev *pci) +{ + struct acpi_table_hest *hest = (struct acpi_table_hest *)stdheader; + void *p = (void *)hest + sizeof(*hest); /* defined by the ACPI 4.0 spec */ + struct acpi_hest_header *hdr = p; + + int i; + int firmware_first = 0; + static unsigned char printed_unused = 0; + static unsigned char printed_reserved = 0; + + for (i=0, hdr=p; p < (((void *)hest) + hest->header.length) && i < hest->error_source_count; i++) { + switch (hdr->type) { + case ACPI_HEST_TYPE_IA32_CHECK: + p += parse_acpi_hest_ia_machine_check(p); + break; + case ACPI_HEST_TYPE_IA32_CORRECTED_CHECK: + p += parse_acpi_hest_ia_corrected(p); + break; + case ACPI_HEST_TYPE_IA32_NMI: + p += parse_acpi_hest_ia_nmi(p); + break; + /* These three should never appear */ + case ACPI_HEST_TYPE_NOT_USED3: + case ACPI_HEST_TYPE_NOT_USED4: + case ACPI_HEST_TYPE_NOT_USED5: + if (!printed_unused) { + printk(KERN_DEBUG PREFIX + "HEST Error Source list contains an obsolete type (%d).\n", hdr->type); + printed_unused = 1; + } + break; + case ACPI_HEST_TYPE_AER_ROOT_PORT: + case ACPI_HEST_TYPE_AER_ENDPOINT: + case ACPI_HEST_TYPE_AER_BRIDGE: + p += parse_acpi_hest_aer(p, hdr->type, pci, &firmware_first); + break; + case ACPI_HEST_TYPE_GENERIC_ERROR: + p += parse_acpi_hest_generic(p); + break; + /* These should never appear either */ + case ACPI_HEST_TYPE_RESERVED: + default: + if (!printed_reserved) { + printk(KERN_DEBUG PREFIX + "HEST Error Source list contains a reserved type (%d).\n", hdr->type); + printed_reserved = 1; + } + break; + } + } + return firmware_first; +} + +int acpi_hest_firmware_first_pci(struct pci_dev *pci) +{ + acpi_status status = AE_NOT_FOUND; + struct acpi_table_header *hest = NULL; + status = acpi_get_table(ACPI_SIG_HEST, 1, &hest); + + if (ACPI_SUCCESS(status)) { + if (acpi_hest_firmware_first(hest, pci)) { + return 1; + } + } + return 0; +} +EXPORT_SYMBOL_GPL(acpi_hest_firmware_first_pci); diff --git a/drivers/acpi/numa.c b/drivers/acpi/numa.c index 202dd0c976a3..2be2fb66204e 100644 --- a/drivers/acpi/numa.c +++ b/drivers/acpi/numa.c @@ -283,22 +283,24 @@ acpi_table_parse_srat(enum acpi_srat_type id, int __init acpi_numa_init(void) { + int ret = 0; + /* SRAT: Static Resource Affinity Table */ if (!acpi_table_parse(ACPI_SIG_SRAT, acpi_parse_srat)) { acpi_table_parse_srat(ACPI_SRAT_TYPE_X2APIC_CPU_AFFINITY, acpi_parse_x2apic_affinity, NR_CPUS); acpi_table_parse_srat(ACPI_SRAT_TYPE_CPU_AFFINITY, acpi_parse_processor_affinity, NR_CPUS); - acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, - acpi_parse_memory_affinity, - NR_NODE_MEMBLKS); + ret = acpi_table_parse_srat(ACPI_SRAT_TYPE_MEMORY_AFFINITY, + acpi_parse_memory_affinity, + NR_NODE_MEMBLKS); } /* SLIT: System Locality Information Table */ acpi_table_parse(ACPI_SIG_SLIT, acpi_parse_slit); acpi_numa_arch_fixup(); - return 0; + return ret; } int acpi_get_pxm(acpi_handle h) diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c index 56071b67bed5..7c1c59ea9ec6 100644 --- a/drivers/acpi/osl.c +++ b/drivers/acpi/osl.c @@ -193,7 +193,7 @@ acpi_status __init acpi_os_initialize(void) static void bind_to_cpu0(struct work_struct *work) { - set_cpus_allowed(current, cpumask_of_cpu(0)); + set_cpus_allowed_ptr(current, cpumask_of(0)); kfree(work); } @@ -1161,7 +1161,13 @@ int acpi_check_resource_conflict(struct resource *res) res_list_elem->name, (long long) res_list_elem->start, (long long) res_list_elem->end); - printk(KERN_INFO "ACPI: Device needs an ACPI driver\n"); + if (acpi_enforce_resources == ENFORCE_RESOURCES_LAX) + printk(KERN_NOTICE "ACPI: This conflict may" + " cause random problems and system" + " instability\n"); + printk(KERN_INFO "ACPI: If an ACPI driver is available" + " for this device, you should use it instead of" + " the native driver\n"); } if (acpi_enforce_resources == ENFORCE_RESOURCES_STRICT) return -EBUSY; diff --git a/drivers/acpi/pci_root.c b/drivers/acpi/pci_root.c index 31122214e0ec..1af808171d46 100644 --- a/drivers/acpi/pci_root.c +++ b/drivers/acpi/pci_root.c @@ -389,6 +389,17 @@ struct pci_dev *acpi_get_pci_dev(acpi_handle handle) pbus = pdev->subordinate; pci_dev_put(pdev); + + /* + * This function may be called for a non-PCI device that has a + * PCI parent (eg. a disk under a PCI SATA controller). In that + * case pdev->subordinate will be NULL for the parent. + */ + if (!pbus) { + dev_dbg(&pdev->dev, "Not a PCI-to-PCI bridge\n"); + pdev = NULL; + break; + } } out: list_for_each_entry_safe(node, tmp, &device_list, node) diff --git a/drivers/acpi/pci_slot.c b/drivers/acpi/pci_slot.c index 45da2bae36c8..11f219743204 100644 --- a/drivers/acpi/pci_slot.c +++ b/drivers/acpi/pci_slot.c @@ -219,12 +219,12 @@ walk_p2p_bridge(acpi_handle handle, u32 lvl, void *context, void **rv) dbg("p2p bridge walk, pci_bus = %x\n", dev->subordinate->number); status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1, - user_function, &child_context, NULL); + user_function, NULL, &child_context, NULL); if (ACPI_FAILURE(status)) goto out; status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1, - walk_p2p_bridge, &child_context, NULL); + walk_p2p_bridge, NULL, &child_context, NULL); out: pci_dev_put(dev); return AE_OK; @@ -277,12 +277,12 @@ walk_root_bridge(acpi_handle handle, acpi_walk_callback user_function) dbg("root bridge walk, pci_bus = %x\n", pci_bus->number); status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1, - user_function, &context, NULL); + user_function, NULL, &context, NULL); if (ACPI_FAILURE(status)) return status; status = acpi_walk_namespace(ACPI_TYPE_DEVICE, handle, (u32)1, - walk_p2p_bridge, &context, NULL); + walk_p2p_bridge, NULL, &context, NULL); if (ACPI_FAILURE(status)) err("%s: walk_p2p_bridge failure - %d\n", __func__, status); diff --git a/drivers/acpi/power_meter.c b/drivers/acpi/power_meter.c index e6bfd77986b8..2ef7030a0c28 100644 --- a/drivers/acpi/power_meter.c +++ b/drivers/acpi/power_meter.c @@ -294,7 +294,11 @@ static int set_acpi_trip(struct acpi_power_meter_resource *resource) return -EINVAL; } - return data; + /* _PTP returns 0 on success, nonzero otherwise */ + if (data) + return -EINVAL; + + return 0; } static ssize_t set_trip(struct device *dev, struct device_attribute *devattr, diff --git a/drivers/acpi/proc.c b/drivers/acpi/proc.c index d0d550d22a6d..d0d25e2e1ced 100644 --- a/drivers/acpi/proc.c +++ b/drivers/acpi/proc.c @@ -393,11 +393,13 @@ acpi_system_write_wakeup_device(struct file *file, struct list_head *node, *next; char strbuf[5]; char str[5] = ""; - int len = count; + unsigned int len = count; struct acpi_device *found_dev = NULL; if (len > 4) len = 4; + if (len < 0) + return -EFAULT; if (copy_from_user(strbuf, buffer, len)) return -EFAULT; diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index c2d4d6e09364..cb4283f5a79d 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -770,7 +770,7 @@ static struct notifier_block acpi_cpu_notifier = .notifier_call = acpi_cpu_soft_notify, }; -static int acpi_processor_add(struct acpi_device *device) +static int __cpuinit acpi_processor_add(struct acpi_device *device) { struct acpi_processor *pr = NULL; int result = 0; @@ -863,13 +863,6 @@ static int acpi_processor_add(struct acpi_device *device) goto err_remove_sysfs; } - if (pr->flags.throttling) { - printk(KERN_INFO PREFIX "%s [%s] (supports", - acpi_device_name(device), acpi_device_bid(device)); - printk(" %d throttling states", pr->throttling.state_count); - printk(")\n"); - } - return 0; err_remove_sysfs: @@ -1109,7 +1102,7 @@ void acpi_processor_install_hotplug_notify(void) acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, - processor_walk_namespace_cb, &action, NULL); + processor_walk_namespace_cb, NULL, &action, NULL); #endif register_hotcpu_notifier(&acpi_cpu_notifier); } @@ -1122,7 +1115,7 @@ void acpi_processor_uninstall_hotplug_notify(void) acpi_walk_namespace(ACPI_TYPE_PROCESSOR, ACPI_ROOT_OBJECT, ACPI_UINT32_MAX, - processor_walk_namespace_cb, &action, NULL); + processor_walk_namespace_cb, NULL, &action, NULL); #endif unregister_hotcpu_notifier(&acpi_cpu_notifier); } diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index cc61a6220102..bbd066e7f854 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -1166,7 +1166,6 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr, #ifdef CONFIG_ACPI_PROCFS struct proc_dir_entry *entry = NULL; #endif - unsigned int i; if (boot_option_idle_override) return 0; @@ -1214,13 +1213,6 @@ int __cpuinit acpi_processor_power_init(struct acpi_processor *pr, acpi_processor_setup_cpuidle(pr); if (cpuidle_register_device(&pr->power.dev)) return -EIO; - - printk(KERN_INFO PREFIX "CPU%d (power states:", pr->id); - for (i = 1; i <= pr->power.count; i++) - if (pr->power.states[i].valid) - printk(" C%d[C%d]", i, - pr->power.states[i].type); - printk(")\n"); } #ifdef CONFIG_ACPI_PROCFS /* 'power' [R] */ diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c index 11088cf10319..01e366d2b6fb 100644 --- a/drivers/acpi/processor_perflib.c +++ b/drivers/acpi/processor_perflib.c @@ -167,6 +167,19 @@ int acpi_processor_ppc_has_changed(struct acpi_processor *pr) return cpufreq_update_policy(pr->id); } +int acpi_processor_get_bios_limit(int cpu, unsigned int *limit) +{ + struct acpi_processor *pr; + + pr = per_cpu(processors, cpu); + if (!pr || !pr->performance || !pr->performance->state_count) + return -ENODEV; + *limit = pr->performance->states[pr->performance_platform_limit]. + core_frequency * 1000; + return 0; +} +EXPORT_SYMBOL(acpi_processor_get_bios_limit); + void acpi_processor_ppc_init(void) { if (!cpufreq_register_notifier @@ -511,7 +524,7 @@ int acpi_processor_preregister_performance( struct acpi_processor *match_pr; struct acpi_psd_package *match_pdomain; - if (!alloc_cpumask_var(&covered_cpus, GFP_KERNEL)) + if (!zalloc_cpumask_var(&covered_cpus, GFP_KERNEL)) return -ENOMEM; mutex_lock(&performance_mutex); @@ -558,7 +571,6 @@ int acpi_processor_preregister_performance( * Now that we have _PSD data from all CPUs, lets setup P-state * domain info. */ - cpumask_clear(covered_cpus); for_each_possible_cpu(i) { pr = per_cpu(processors, i); if (!pr) diff --git a/drivers/acpi/processor_throttling.c b/drivers/acpi/processor_throttling.c index ce7cf3bc5101..1c5d7a8b2fdf 100644 --- a/drivers/acpi/processor_throttling.c +++ b/drivers/acpi/processor_throttling.c @@ -77,7 +77,7 @@ static int acpi_processor_update_tsd_coord(void) struct acpi_tsd_package *pdomain, *match_pdomain; struct acpi_processor_throttling *pthrottling, *match_pthrottling; - if (!alloc_cpumask_var(&covered_cpus, GFP_KERNEL)) + if (!zalloc_cpumask_var(&covered_cpus, GFP_KERNEL)) return -ENOMEM; /* @@ -105,7 +105,6 @@ static int acpi_processor_update_tsd_coord(void) if (retval) goto err_ret; - cpumask_clear(covered_cpus); for_each_possible_cpu(i) { pr = per_cpu(processors, i); if (!pr) @@ -1134,15 +1133,15 @@ int acpi_processor_get_throttling_info(struct acpi_processor *pr) int result = 0; struct acpi_processor_throttling *pthrottling; + if (!pr) + return -EINVAL; + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "pblk_address[0x%08x] duty_offset[%d] duty_width[%d]\n", pr->throttling.address, pr->throttling.duty_offset, pr->throttling.duty_width)); - if (!pr) - return -EINVAL; - /* * Evaluate _PTC, _TSS and _TPC * They must all be present or none of them can be used. diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index 408ebde18986..ff9f6226085d 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -22,6 +22,8 @@ extern struct acpi_device *acpi_root; #define ACPI_BUS_HID "LNXSYBUS" #define ACPI_BUS_DEVICE_NAME "System Bus" +#define ACPI_IS_ROOT_DEVICE(device) (!(device)->parent) + static LIST_HEAD(acpi_device_list); static LIST_HEAD(acpi_bus_id_list); DEFINE_MUTEX(acpi_device_lock); @@ -43,40 +45,19 @@ static int create_modalias(struct acpi_device *acpi_dev, char *modalias, { int len; int count; - - if (!acpi_dev->flags.hardware_id && !acpi_dev->flags.compatible_ids) - return -ENODEV; + struct acpi_hardware_id *id; len = snprintf(modalias, size, "acpi:"); size -= len; - if (acpi_dev->flags.hardware_id) { - count = snprintf(&modalias[len], size, "%s:", - acpi_dev->pnp.hardware_id); + list_for_each_entry(id, &acpi_dev->pnp.ids, list) { + count = snprintf(&modalias[len], size, "%s:", id->id); if (count < 0 || count >= size) return -EINVAL; len += count; size -= count; } - if (acpi_dev->flags.compatible_ids) { - struct acpica_device_id_list *cid_list; - int i; - - cid_list = acpi_dev->pnp.cid_list; - for (i = 0; i < cid_list->count; i++) { - count = snprintf(&modalias[len], size, "%s:", - cid_list->ids[i].string); - if (count < 0 || count >= size) { - printk(KERN_ERR PREFIX "%s cid[%i] exceeds event buffer size", - acpi_dev->pnp.device_name, i); - break; - } - len += count; - size -= count; - } - } - modalias[len] = '\0'; return len; } @@ -183,7 +164,7 @@ static ssize_t acpi_device_hid_show(struct device *dev, struct device_attribute *attr, char *buf) { struct acpi_device *acpi_dev = to_acpi_device(dev); - return sprintf(buf, "%s\n", acpi_dev->pnp.hardware_id); + return sprintf(buf, "%s\n", acpi_device_hid(acpi_dev)); } static DEVICE_ATTR(hid, 0444, acpi_device_hid_show, NULL); @@ -219,17 +200,13 @@ static int acpi_device_setup_files(struct acpi_device *dev) goto end; } - if (dev->flags.hardware_id) { - result = device_create_file(&dev->dev, &dev_attr_hid); - if (result) - goto end; - } + result = device_create_file(&dev->dev, &dev_attr_hid); + if (result) + goto end; - if (dev->flags.hardware_id || dev->flags.compatible_ids) { - result = device_create_file(&dev->dev, &dev_attr_modalias); - if (result) - goto end; - } + result = device_create_file(&dev->dev, &dev_attr_modalias); + if (result) + goto end; /* * If device has _EJ0, 'eject' file is created that is used to trigger @@ -255,11 +232,8 @@ static void acpi_device_remove_files(struct acpi_device *dev) if (ACPI_SUCCESS(status)) device_remove_file(&dev->dev, &dev_attr_eject); - if (dev->flags.hardware_id || dev->flags.compatible_ids) - device_remove_file(&dev->dev, &dev_attr_modalias); - - if (dev->flags.hardware_id) - device_remove_file(&dev->dev, &dev_attr_hid); + device_remove_file(&dev->dev, &dev_attr_modalias); + device_remove_file(&dev->dev, &dev_attr_hid); if (dev->handle) device_remove_file(&dev->dev, &dev_attr_path); } @@ -271,6 +245,7 @@ int acpi_match_device_ids(struct acpi_device *device, const struct acpi_device_id *ids) { const struct acpi_device_id *id; + struct acpi_hardware_id *hwid; /* * If the device is not present, it is unnecessary to load device @@ -279,40 +254,30 @@ int acpi_match_device_ids(struct acpi_device *device, if (!device->status.present) return -ENODEV; - if (device->flags.hardware_id) { - for (id = ids; id->id[0]; id++) { - if (!strcmp((char*)id->id, device->pnp.hardware_id)) + for (id = ids; id->id[0]; id++) + list_for_each_entry(hwid, &device->pnp.ids, list) + if (!strcmp((char *) id->id, hwid->id)) return 0; - } - } - - if (device->flags.compatible_ids) { - struct acpica_device_id_list *cid_list = device->pnp.cid_list; - int i; - - for (id = ids; id->id[0]; id++) { - /* compare multiple _CID entries against driver ids */ - for (i = 0; i < cid_list->count; i++) { - if (!strcmp((char*)id->id, - cid_list->ids[i].string)) - return 0; - } - } - } return -ENOENT; } EXPORT_SYMBOL(acpi_match_device_ids); +static void acpi_free_ids(struct acpi_device *device) +{ + struct acpi_hardware_id *id, *tmp; + + list_for_each_entry_safe(id, tmp, &device->pnp.ids, list) { + kfree(id->id); + kfree(id); + } +} + static void acpi_device_release(struct device *dev) { struct acpi_device *acpi_dev = to_acpi_device(dev); - kfree(acpi_dev->pnp.cid_list); - if (acpi_dev->flags.hardware_id) - kfree(acpi_dev->pnp.hardware_id); - if (acpi_dev->flags.unique_id) - kfree(acpi_dev->pnp.unique_id); + acpi_free_ids(acpi_dev); kfree(acpi_dev); } @@ -378,15 +343,13 @@ static acpi_status acpi_device_notify_fixed(void *data) static int acpi_device_install_notify_handler(struct acpi_device *device) { acpi_status status; - char *hid; - hid = acpi_device_hid(device); - if (!strcmp(hid, ACPI_BUTTON_HID_POWERF)) + if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) status = acpi_install_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, acpi_device_notify_fixed, device); - else if (!strcmp(hid, ACPI_BUTTON_HID_SLEEPF)) + else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) status = acpi_install_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, acpi_device_notify_fixed, @@ -404,10 +367,10 @@ static int acpi_device_install_notify_handler(struct acpi_device *device) static void acpi_device_remove_notify_handler(struct acpi_device *device) { - if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_POWERF)) + if (device->device_type == ACPI_BUS_TYPE_POWER_BUTTON) acpi_remove_fixed_event_handler(ACPI_EVENT_POWER_BUTTON, acpi_device_notify_fixed); - else if (!strcmp(acpi_device_hid(device), ACPI_BUTTON_HID_SLEEPF)) + else if (device->device_type == ACPI_BUS_TYPE_SLEEP_BUTTON) acpi_remove_fixed_event_handler(ACPI_EVENT_SLEEP_BUTTON, acpi_device_notify_fixed); else @@ -474,12 +437,12 @@ struct bus_type acpi_bus_type = { .uevent = acpi_device_uevent, }; -static int acpi_device_register(struct acpi_device *device, - struct acpi_device *parent) +static int acpi_device_register(struct acpi_device *device) { int result; struct acpi_device_bus_id *acpi_device_bus_id, *new_bus_id; int found = 0; + /* * Linkage * ------- @@ -501,8 +464,9 @@ static int acpi_device_register(struct acpi_device *device, * If failed, create one and link it into acpi_bus_id_list */ list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node) { - if(!strcmp(acpi_device_bus_id->bus_id, device->flags.hardware_id? device->pnp.hardware_id : "device")) { - acpi_device_bus_id->instance_no ++; + if (!strcmp(acpi_device_bus_id->bus_id, + acpi_device_hid(device))) { + acpi_device_bus_id->instance_no++; found = 1; kfree(new_bus_id); break; @@ -510,7 +474,7 @@ static int acpi_device_register(struct acpi_device *device, } if (!found) { acpi_device_bus_id = new_bus_id; - strcpy(acpi_device_bus_id->bus_id, device->flags.hardware_id ? device->pnp.hardware_id : "device"); + strcpy(acpi_device_bus_id->bus_id, acpi_device_hid(device)); acpi_device_bus_id->instance_no = 0; list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list); } @@ -524,7 +488,7 @@ static int acpi_device_register(struct acpi_device *device, mutex_unlock(&acpi_device_lock); if (device->parent) - device->dev.parent = &parent->dev; + device->dev.parent = &device->parent->dev; device->dev.bus = &acpi_bus_type; device->dev.release = &acpi_device_release; result = device_register(&device->dev); @@ -664,6 +628,33 @@ EXPORT_SYMBOL(acpi_bus_unregister_driver); /* -------------------------------------------------------------------------- Device Enumeration -------------------------------------------------------------------------- */ +static struct acpi_device *acpi_bus_get_parent(acpi_handle handle) +{ + acpi_status status; + int ret; + struct acpi_device *device; + + /* + * Fixed hardware devices do not appear in the namespace and do not + * have handles, but we fabricate acpi_devices for them, so we have + * to deal with them specially. + */ + if (handle == NULL) + return acpi_root; + + do { + status = acpi_get_parent(handle, &handle); + if (status == AE_NULL_ENTRY) + return NULL; + if (ACPI_FAILURE(status)) + return acpi_root; + + ret = acpi_bus_get_device(handle, &device); + if (ret == 0) + return device; + } while (1); +} + acpi_status acpi_bus_get_ejd(acpi_handle handle, acpi_handle *ejd) { @@ -876,11 +867,6 @@ static int acpi_bus_get_flags(struct acpi_device *device) if (ACPI_SUCCESS(status)) device->flags.dynamic_status = 1; - /* Presence of _CID indicates 'compatible_ids' */ - status = acpi_get_handle(device->handle, "_CID", &temp); - if (ACPI_SUCCESS(status)) - device->flags.compatible_ids = 1; - /* Presence of _RMV indicates 'removable' */ status = acpi_get_handle(device->handle, "_RMV", &temp); if (ACPI_SUCCESS(status)) @@ -918,8 +904,7 @@ static int acpi_bus_get_flags(struct acpi_device *device) return 0; } -static void acpi_device_get_busid(struct acpi_device *device, - acpi_handle handle, int type) +static void acpi_device_get_busid(struct acpi_device *device) { char bus_id[5] = { '?', 0 }; struct acpi_buffer buffer = { sizeof(bus_id), bus_id }; @@ -931,10 +916,12 @@ static void acpi_device_get_busid(struct acpi_device *device, * The device's Bus ID is simply the object name. * TBD: Shouldn't this value be unique (within the ACPI namespace)? */ - switch (type) { - case ACPI_BUS_TYPE_SYSTEM: + if (ACPI_IS_ROOT_DEVICE(device)) { strcpy(device->pnp.bus_id, "ACPI"); - break; + return; + } + + switch (device->device_type) { case ACPI_BUS_TYPE_POWER_BUTTON: strcpy(device->pnp.bus_id, "PWRF"); break; @@ -942,7 +929,7 @@ static void acpi_device_get_busid(struct acpi_device *device, strcpy(device->pnp.bus_id, "SLPF"); break; default: - acpi_get_name(handle, ACPI_SINGLE_NAME, &buffer); + acpi_get_name(device->handle, ACPI_SINGLE_NAME, &buffer); /* Clean up trailing underscores (if any) */ for (i = 3; i > 1; i--) { if (bus_id[i] == '_') @@ -1000,204 +987,134 @@ static int acpi_dock_match(struct acpi_device *device) return acpi_get_handle(device->handle, "_DCK", &tmp); } -static struct acpica_device_id_list* -acpi_add_cid( - struct acpi_device_info *info, - struct acpica_device_id *new_cid) +char *acpi_device_hid(struct acpi_device *device) { - struct acpica_device_id_list *cid; - char *next_id_string; - acpi_size cid_length; - acpi_size new_cid_length; - u32 i; - - - /* Allocate new CID list with room for the new CID */ - - if (!new_cid) - new_cid_length = info->compatible_id_list.list_size; - else if (info->compatible_id_list.list_size) - new_cid_length = info->compatible_id_list.list_size + - new_cid->length + sizeof(struct acpica_device_id); - else - new_cid_length = sizeof(struct acpica_device_id_list) + new_cid->length; - - cid = ACPI_ALLOCATE_ZEROED(new_cid_length); - if (!cid) { - return NULL; - } - - cid->list_size = new_cid_length; - cid->count = info->compatible_id_list.count; - if (new_cid) - cid->count++; - next_id_string = (char *) cid->ids + (cid->count * sizeof(struct acpica_device_id)); - - /* Copy all existing CIDs */ - - for (i = 0; i < info->compatible_id_list.count; i++) { - cid_length = info->compatible_id_list.ids[i].length; - cid->ids[i].string = next_id_string; - cid->ids[i].length = cid_length; + struct acpi_hardware_id *hid; - ACPI_MEMCPY(next_id_string, info->compatible_id_list.ids[i].string, - cid_length); - - next_id_string += cid_length; - } + hid = list_first_entry(&device->pnp.ids, struct acpi_hardware_id, list); + return hid->id; +} +EXPORT_SYMBOL(acpi_device_hid); - /* Append the new CID */ +static void acpi_add_id(struct acpi_device *device, const char *dev_id) +{ + struct acpi_hardware_id *id; - if (new_cid) { - cid->ids[i].string = next_id_string; - cid->ids[i].length = new_cid->length; + id = kmalloc(sizeof(*id), GFP_KERNEL); + if (!id) + return; - ACPI_MEMCPY(next_id_string, new_cid->string, new_cid->length); + id->id = kmalloc(strlen(dev_id) + 1, GFP_KERNEL); + if (!id->id) { + kfree(id); + return; } - return cid; + strcpy(id->id, dev_id); + list_add_tail(&id->list, &device->pnp.ids); } -static void acpi_device_set_id(struct acpi_device *device, - struct acpi_device *parent, acpi_handle handle, - int type) +static void acpi_device_set_id(struct acpi_device *device) { - struct acpi_device_info *info = NULL; - char *hid = NULL; - char *uid = NULL; - struct acpica_device_id_list *cid_list = NULL; - char *cid_add = NULL; acpi_status status; + struct acpi_device_info *info; + struct acpica_device_id_list *cid_list; + int i; - switch (type) { + switch (device->device_type) { case ACPI_BUS_TYPE_DEVICE: - status = acpi_get_object_info(handle, &info); + if (ACPI_IS_ROOT_DEVICE(device)) { + acpi_add_id(device, ACPI_SYSTEM_HID); + break; + } else if (ACPI_IS_ROOT_DEVICE(device->parent)) { + /* \_SB_, the only root-level namespace device */ + acpi_add_id(device, ACPI_BUS_HID); + strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME); + strcpy(device->pnp.device_class, ACPI_BUS_CLASS); + break; + } + + status = acpi_get_object_info(device->handle, &info); if (ACPI_FAILURE(status)) { printk(KERN_ERR PREFIX "%s: Error reading device info\n", __func__); return; } if (info->valid & ACPI_VALID_HID) - hid = info->hardware_id.string; - if (info->valid & ACPI_VALID_UID) - uid = info->unique_id.string; - if (info->valid & ACPI_VALID_CID) + acpi_add_id(device, info->hardware_id.string); + if (info->valid & ACPI_VALID_CID) { cid_list = &info->compatible_id_list; + for (i = 0; i < cid_list->count; i++) + acpi_add_id(device, cid_list->ids[i].string); + } if (info->valid & ACPI_VALID_ADR) { device->pnp.bus_address = info->address; device->flags.bus_address = 1; } - /* If we have a video/bay/dock device, add our selfdefined - HID to the CID list. Like that the video/bay/dock drivers - will get autoloaded and the device might still match - against another driver. - */ + kfree(info); + + /* + * Some devices don't reliably have _HIDs & _CIDs, so add + * synthetic HIDs to make sure drivers can find them. + */ if (acpi_is_video_device(device)) - cid_add = ACPI_VIDEO_HID; + acpi_add_id(device, ACPI_VIDEO_HID); else if (ACPI_SUCCESS(acpi_bay_match(device))) - cid_add = ACPI_BAY_HID; + acpi_add_id(device, ACPI_BAY_HID); else if (ACPI_SUCCESS(acpi_dock_match(device))) - cid_add = ACPI_DOCK_HID; + acpi_add_id(device, ACPI_DOCK_HID); break; case ACPI_BUS_TYPE_POWER: - hid = ACPI_POWER_HID; + acpi_add_id(device, ACPI_POWER_HID); break; case ACPI_BUS_TYPE_PROCESSOR: - hid = ACPI_PROCESSOR_OBJECT_HID; - break; - case ACPI_BUS_TYPE_SYSTEM: - hid = ACPI_SYSTEM_HID; + acpi_add_id(device, ACPI_PROCESSOR_OBJECT_HID); break; case ACPI_BUS_TYPE_THERMAL: - hid = ACPI_THERMAL_HID; + acpi_add_id(device, ACPI_THERMAL_HID); break; case ACPI_BUS_TYPE_POWER_BUTTON: - hid = ACPI_BUTTON_HID_POWERF; + acpi_add_id(device, ACPI_BUTTON_HID_POWERF); break; case ACPI_BUS_TYPE_SLEEP_BUTTON: - hid = ACPI_BUTTON_HID_SLEEPF; + acpi_add_id(device, ACPI_BUTTON_HID_SLEEPF); break; } /* - * \_SB - * ---- - * Fix for the system root bus device -- the only root-level device. + * We build acpi_devices for some objects that don't have _HID or _CID, + * e.g., PCI bridges and slots. Drivers can't bind to these objects, + * but we do use them indirectly by traversing the acpi_device tree. + * This generic ID isn't useful for driver binding, but it provides + * the useful property that "every acpi_device has an ID." */ - if (((acpi_handle)parent == ACPI_ROOT_OBJECT) && (type == ACPI_BUS_TYPE_DEVICE)) { - hid = ACPI_BUS_HID; - strcpy(device->pnp.device_name, ACPI_BUS_DEVICE_NAME); - strcpy(device->pnp.device_class, ACPI_BUS_CLASS); - } - - if (hid) { - device->pnp.hardware_id = ACPI_ALLOCATE_ZEROED(strlen (hid) + 1); - if (device->pnp.hardware_id) { - strcpy(device->pnp.hardware_id, hid); - device->flags.hardware_id = 1; - } - } - if (!device->flags.hardware_id) - device->pnp.hardware_id = ""; - - if (uid) { - device->pnp.unique_id = ACPI_ALLOCATE_ZEROED(strlen (uid) + 1); - if (device->pnp.unique_id) { - strcpy(device->pnp.unique_id, uid); - device->flags.unique_id = 1; - } - } - if (!device->flags.unique_id) - device->pnp.unique_id = ""; - - if (cid_list || cid_add) { - struct acpica_device_id_list *list; - - if (cid_add) { - struct acpica_device_id cid; - cid.length = strlen (cid_add) + 1; - cid.string = cid_add; - - list = acpi_add_cid(info, &cid); - } else { - list = acpi_add_cid(info, NULL); - } - - if (list) { - device->pnp.cid_list = list; - if (cid_add) - device->flags.compatible_ids = 1; - } - } - - kfree(info); + if (list_empty(&device->pnp.ids)) + acpi_add_id(device, "device"); } -static int acpi_device_set_context(struct acpi_device *device, int type) +static int acpi_device_set_context(struct acpi_device *device) { - acpi_status status = AE_OK; - int result = 0; + acpi_status status; + /* * Context * ------- * Attach this 'struct acpi_device' to the ACPI object. This makes - * resolutions from handle->device very efficient. Note that we need - * to be careful with fixed-feature devices as they all attach to the - * root object. + * resolutions from handle->device very efficient. Fixed hardware + * devices have no handles, so we skip them. */ - if (type != ACPI_BUS_TYPE_POWER_BUTTON && - type != ACPI_BUS_TYPE_SLEEP_BUTTON) { - status = acpi_attach_data(device->handle, - acpi_bus_data_handler, device); + if (!device->handle) + return 0; - if (ACPI_FAILURE(status)) { - printk(KERN_ERR PREFIX "Error attaching device data\n"); - result = -ENODEV; - } - } - return result; + status = acpi_attach_data(device->handle, + acpi_bus_data_handler, device); + if (ACPI_SUCCESS(status)) + return 0; + + printk(KERN_ERR PREFIX "Error attaching device data\n"); + return -ENODEV; } static int acpi_bus_remove(struct acpi_device *dev, int rmdevice) @@ -1223,17 +1140,14 @@ static int acpi_bus_remove(struct acpi_device *dev, int rmdevice) return 0; } -static int -acpi_add_single_object(struct acpi_device **child, - struct acpi_device *parent, acpi_handle handle, int type, - struct acpi_bus_ops *ops) +static int acpi_add_single_object(struct acpi_device **child, + acpi_handle handle, int type, + unsigned long long sta, + struct acpi_bus_ops *ops) { - int result = 0; - struct acpi_device *device = NULL; - - - if (!child) - return -EINVAL; + int result; + struct acpi_device *device; + struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; device = kzalloc(sizeof(struct acpi_device), GFP_KERNEL); if (!device) { @@ -1241,75 +1155,31 @@ acpi_add_single_object(struct acpi_device **child, return -ENOMEM; } + INIT_LIST_HEAD(&device->pnp.ids); + device->device_type = type; device->handle = handle; - device->parent = parent; + device->parent = acpi_bus_get_parent(handle); device->bus_ops = *ops; /* workround for not call .start */ + STRUCT_TO_INT(device->status) = sta; - - acpi_device_get_busid(device, handle, type); + acpi_device_get_busid(device); /* * Flags * ----- - * Get prior to calling acpi_bus_get_status() so we know whether - * or not _STA is present. Note that we only look for object - * handles -- cannot evaluate objects until we know the device is - * present and properly initialized. + * Note that we only look for object handles -- cannot evaluate objects + * until we know the device is present and properly initialized. */ result = acpi_bus_get_flags(device); if (result) goto end; /* - * Status - * ------ - * See if the device is present. We always assume that non-Device - * and non-Processor objects (e.g. thermal zones, power resources, - * etc.) are present, functioning, etc. (at least when parent object - * is present). Note that _STA has a different meaning for some - * objects (e.g. power resources) so we need to be careful how we use - * it. - */ - switch (type) { - case ACPI_BUS_TYPE_PROCESSOR: - case ACPI_BUS_TYPE_DEVICE: - result = acpi_bus_get_status(device); - if (ACPI_FAILURE(result)) { - result = -ENODEV; - goto end; - } - /* - * When the device is neither present nor functional, the - * device should not be added to Linux ACPI device tree. - * When the status of the device is not present but functinal, - * it should be added to Linux ACPI tree. For example : bay - * device , dock device. - * In such conditions it is unncessary to check whether it is - * bay device or dock device. - */ - if (!device->status.present && !device->status.functional) { - result = -ENODEV; - goto end; - } - break; - default: - STRUCT_TO_INT(device->status) = - ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | - ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING; - break; - } - - /* * Initialize Device * ----------------- * TBD: Synch with Core's enumeration/initialization process. */ - - /* - * Hardware ID, Unique ID, & Bus Address - * ------------------------------------- - */ - acpi_device_set_id(device, parent, handle, type); + acpi_device_set_id(device); /* * Power Management @@ -1341,10 +1211,10 @@ acpi_add_single_object(struct acpi_device **child, goto end; } - if ((result = acpi_device_set_context(device, type))) + if ((result = acpi_device_set_context(device))) goto end; - result = acpi_device_register(device, parent); + result = acpi_device_register(device); /* * Bind _ADR-Based Devices when hot add @@ -1355,128 +1225,117 @@ acpi_add_single_object(struct acpi_device **child, } end: - if (!result) + if (!result) { + acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, + "Adding %s [%s] parent %s\n", dev_name(&device->dev), + (char *) buffer.pointer, + device->parent ? dev_name(&device->parent->dev) : + "(null)")); + kfree(buffer.pointer); *child = device; - else + } else acpi_device_release(&device->dev); return result; } -static int acpi_bus_scan(struct acpi_device *start, struct acpi_bus_ops *ops) -{ - acpi_status status = AE_OK; - struct acpi_device *parent = NULL; - struct acpi_device *child = NULL; - acpi_handle phandle = NULL; - acpi_handle chandle = NULL; - acpi_object_type type = 0; - u32 level = 1; - +#define ACPI_STA_DEFAULT (ACPI_STA_DEVICE_PRESENT | ACPI_STA_DEVICE_ENABLED | \ + ACPI_STA_DEVICE_UI | ACPI_STA_DEVICE_FUNCTIONING) - if (!start) - return -EINVAL; +static int acpi_bus_type_and_status(acpi_handle handle, int *type, + unsigned long long *sta) +{ + acpi_status status; + acpi_object_type acpi_type; - parent = start; - phandle = start->handle; + status = acpi_get_type(handle, &acpi_type); + if (ACPI_FAILURE(status)) + return -ENODEV; - /* - * Parse through the ACPI namespace, identify all 'devices', and - * create a new 'struct acpi_device' for each. - */ - while ((level > 0) && parent) { + switch (acpi_type) { + case ACPI_TYPE_ANY: /* for ACPI_ROOT_OBJECT */ + case ACPI_TYPE_DEVICE: + *type = ACPI_BUS_TYPE_DEVICE; + status = acpi_bus_get_status_handle(handle, sta); + if (ACPI_FAILURE(status)) + return -ENODEV; + break; + case ACPI_TYPE_PROCESSOR: + *type = ACPI_BUS_TYPE_PROCESSOR; + status = acpi_bus_get_status_handle(handle, sta); + if (ACPI_FAILURE(status)) + return -ENODEV; + break; + case ACPI_TYPE_THERMAL: + *type = ACPI_BUS_TYPE_THERMAL; + *sta = ACPI_STA_DEFAULT; + break; + case ACPI_TYPE_POWER: + *type = ACPI_BUS_TYPE_POWER; + *sta = ACPI_STA_DEFAULT; + break; + default: + return -ENODEV; + } - status = acpi_get_next_object(ACPI_TYPE_ANY, phandle, - chandle, &chandle); + return 0; +} - /* - * If this scope is exhausted then move our way back up. - */ - if (ACPI_FAILURE(status)) { - level--; - chandle = phandle; - acpi_get_parent(phandle, &phandle); - if (parent->parent) - parent = parent->parent; - continue; - } +static acpi_status acpi_bus_check_add(acpi_handle handle, u32 lvl, + void *context, void **return_value) +{ + struct acpi_bus_ops *ops = context; + int type; + unsigned long long sta; + struct acpi_device *device; + acpi_status status; + int result; - status = acpi_get_type(chandle, &type); - if (ACPI_FAILURE(status)) - continue; + result = acpi_bus_type_and_status(handle, &type, &sta); + if (result) + return AE_OK; - /* - * If this is a scope object then parse it (depth-first). - */ - if (type == ACPI_TYPE_LOCAL_SCOPE) { - level++; - phandle = chandle; - chandle = NULL; - continue; - } + if (!(sta & ACPI_STA_DEVICE_PRESENT) && + !(sta & ACPI_STA_DEVICE_FUNCTIONING)) + return AE_CTRL_DEPTH; - /* - * We're only interested in objects that we consider 'devices'. - */ - switch (type) { - case ACPI_TYPE_DEVICE: - type = ACPI_BUS_TYPE_DEVICE; - break; - case ACPI_TYPE_PROCESSOR: - type = ACPI_BUS_TYPE_PROCESSOR; - break; - case ACPI_TYPE_THERMAL: - type = ACPI_BUS_TYPE_THERMAL; - break; - case ACPI_TYPE_POWER: - type = ACPI_BUS_TYPE_POWER; - break; - default: - continue; - } + /* + * We may already have an acpi_device from a previous enumeration. If + * so, we needn't add it again, but we may still have to start it. + */ + device = NULL; + acpi_bus_get_device(handle, &device); + if (ops->acpi_op_add && !device) + acpi_add_single_object(&device, handle, type, sta, ops); - if (ops->acpi_op_add) - status = acpi_add_single_object(&child, parent, - chandle, type, ops); - else - status = acpi_bus_get_device(chandle, &child); + if (!device) + return AE_CTRL_DEPTH; + if (ops->acpi_op_start && !(ops->acpi_op_add)) { + status = acpi_start_single_object(device); if (ACPI_FAILURE(status)) - continue; + return AE_CTRL_DEPTH; + } - if (ops->acpi_op_start && !(ops->acpi_op_add)) { - status = acpi_start_single_object(child); - if (ACPI_FAILURE(status)) - continue; - } + if (!*return_value) + *return_value = device; + return AE_OK; +} - /* - * If the device is present, enabled, and functioning then - * parse its scope (depth-first). Note that we need to - * represent absent devices to facilitate PnP notifications - * -- but only the subtree head (not all of its children, - * which will be enumerated when the parent is inserted). - * - * TBD: Need notifications and other detection mechanisms - * in place before we can fully implement this. - */ - /* - * When the device is not present but functional, it is also - * necessary to scan the children of this device. - */ - if (child->status.present || (!child->status.present && - child->status.functional)) { - status = acpi_get_next_object(ACPI_TYPE_ANY, chandle, - NULL, NULL); - if (ACPI_SUCCESS(status)) { - level++; - phandle = chandle; - chandle = NULL; - parent = child; - } - } - } +static int acpi_bus_scan(acpi_handle handle, struct acpi_bus_ops *ops, + struct acpi_device **child) +{ + acpi_status status; + void *device = NULL; + + status = acpi_bus_check_add(handle, 0, ops, &device); + if (ACPI_SUCCESS(status)) + acpi_walk_namespace(ACPI_TYPE_ANY, handle, ACPI_UINT32_MAX, + acpi_bus_check_add, NULL, ops, &device); + if (child) + *child = device; return 0; } @@ -1484,36 +1343,25 @@ int acpi_bus_add(struct acpi_device **child, struct acpi_device *parent, acpi_handle handle, int type) { - int result; struct acpi_bus_ops ops; memset(&ops, 0, sizeof(ops)); ops.acpi_op_add = 1; - result = acpi_add_single_object(child, parent, handle, type, &ops); - if (!result) - result = acpi_bus_scan(*child, &ops); - - return result; + acpi_bus_scan(handle, &ops, child); + return 0; } EXPORT_SYMBOL(acpi_bus_add); int acpi_bus_start(struct acpi_device *device) { - int result; struct acpi_bus_ops ops; + memset(&ops, 0, sizeof(ops)); + ops.acpi_op_start = 1; - if (!device) - return -EINVAL; - - result = acpi_start_single_object(device); - if (!result) { - memset(&ops, 0, sizeof(ops)); - ops.acpi_op_start = 1; - result = acpi_bus_scan(device, &ops); - } - return result; + acpi_bus_scan(device->handle, &ops, NULL); + return 0; } EXPORT_SYMBOL(acpi_bus_start); @@ -1572,15 +1420,12 @@ int acpi_bus_trim(struct acpi_device *start, int rmdevice) } EXPORT_SYMBOL_GPL(acpi_bus_trim); -static int acpi_bus_scan_fixed(struct acpi_device *root) +static int acpi_bus_scan_fixed(void) { int result = 0; struct acpi_device *device = NULL; struct acpi_bus_ops ops; - if (!root) - return -ENODEV; - memset(&ops, 0, sizeof(ops)); ops.acpi_op_add = 1; ops.acpi_op_start = 1; @@ -1589,16 +1434,16 @@ static int acpi_bus_scan_fixed(struct acpi_device *root) * Enumerate all fixed-feature devices. */ if ((acpi_gbl_FADT.flags & ACPI_FADT_POWER_BUTTON) == 0) { - result = acpi_add_single_object(&device, acpi_root, - NULL, + result = acpi_add_single_object(&device, NULL, ACPI_BUS_TYPE_POWER_BUTTON, + ACPI_STA_DEFAULT, &ops); } if ((acpi_gbl_FADT.flags & ACPI_FADT_SLEEP_BUTTON) == 0) { - result = acpi_add_single_object(&device, acpi_root, - NULL, + result = acpi_add_single_object(&device, NULL, ACPI_BUS_TYPE_SLEEP_BUTTON, + ACPI_STA_DEFAULT, &ops); } @@ -1621,24 +1466,15 @@ int __init acpi_scan_init(void) } /* - * Create the root device in the bus's device tree - */ - result = acpi_add_single_object(&acpi_root, NULL, ACPI_ROOT_OBJECT, - ACPI_BUS_TYPE_SYSTEM, &ops); - if (result) - goto Done; - - /* * Enumerate devices in the ACPI namespace. */ - result = acpi_bus_scan_fixed(acpi_root); + result = acpi_bus_scan(ACPI_ROOT_OBJECT, &ops, &acpi_root); if (!result) - result = acpi_bus_scan(acpi_root, &ops); + result = acpi_bus_scan_fixed(); if (result) acpi_device_unregister(acpi_root, ACPI_BUS_REMOVAL_NORMAL); -Done: return result; } diff --git a/drivers/acpi/sleep.c b/drivers/acpi/sleep.c index a90afcc723ab..5f2c379ab7bf 100644 --- a/drivers/acpi/sleep.c +++ b/drivers/acpi/sleep.c @@ -413,6 +413,38 @@ static struct dmi_system_id __initdata acpisleep_dmi_table[] = { }, }, { + .callback = init_set_sci_en_on_resume, + .ident = "Hewlett-Packard Pavilion dv4", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4"), + }, + }, + { + .callback = init_set_sci_en_on_resume, + .ident = "Hewlett-Packard Pavilion dv7", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv7"), + }, + }, + { + .callback = init_set_sci_en_on_resume, + .ident = "Hewlett-Packard Compaq Presario C700 Notebook PC", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "Compaq Presario C700 Notebook PC"), + }, + }, + { + .callback = init_set_sci_en_on_resume, + .ident = "Hewlett-Packard Compaq Presario CQ40 Notebook PC", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), + DMI_MATCH(DMI_PRODUCT_NAME, "Compaq Presario CQ40 Notebook PC"), + }, + }, + { .callback = init_old_suspend_ordering, .ident = "Panasonic CF51-2L", .matches = { diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c index 94b1a4c5abab..05dff631591c 100644 --- a/drivers/acpi/video.c +++ b/drivers/acpi/video.c @@ -285,7 +285,7 @@ static int acpi_video_device_brightness_open_fs(struct inode *inode, struct file *file); static ssize_t acpi_video_device_write_brightness(struct file *file, const char __user *buffer, size_t count, loff_t *data); -static struct file_operations acpi_video_device_brightness_fops = { +static const struct file_operations acpi_video_device_brightness_fops = { .owner = THIS_MODULE, .open = acpi_video_device_brightness_open_fs, .read = seq_read, @@ -1109,7 +1109,12 @@ static int acpi_video_bus_check(struct acpi_video_bus *video) */ /* Does this device support video switching? */ - if (video->cap._DOS) { + if (video->cap._DOS || video->cap._DOD) { + if (!video->cap._DOS) { + printk(KERN_WARNING FW_BUG + "ACPI(%s) defines _DOD but not _DOS\n", + acpi_device_bid(video->device)); + } video->flags.multihead = 1; status = 0; } @@ -1218,7 +1223,7 @@ acpi_video_device_write_state(struct file *file, u32 state = 0; - if (!dev || count + 1 > sizeof str) + if (!dev || count >= sizeof(str)) return -EINVAL; if (copy_from_user(str, buffer, count)) @@ -1275,7 +1280,7 @@ acpi_video_device_write_brightness(struct file *file, int i; - if (!dev || !dev->brightness || count + 1 > sizeof str) + if (!dev || !dev->brightness || count >= sizeof(str)) return -EINVAL; if (copy_from_user(str, buffer, count)) @@ -1557,7 +1562,7 @@ acpi_video_bus_write_POST(struct file *file, unsigned long long opt, options; - if (!video || count + 1 > sizeof str) + if (!video || count >= sizeof(str)) return -EINVAL; status = acpi_video_bus_POST_options(video, &options); @@ -1597,7 +1602,7 @@ acpi_video_bus_write_DOS(struct file *file, unsigned long opt; - if (!video || count + 1 > sizeof str) + if (!video || count >= sizeof(str)) return -EINVAL; if (copy_from_user(str, buffer, count)) @@ -1986,6 +1991,10 @@ acpi_video_switch_brightness(struct acpi_video_device *device, int event) result = acpi_video_device_lcd_set_level(device, level_next); + if (!result) + backlight_force_update(device->backlight, + BACKLIGHT_UPDATE_HOTKEY); + out: if (result) printk(KERN_ERR PREFIX "Failed to switch the brightness\n"); diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 7032f25da9b5..fc2f26b9b407 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -7,7 +7,7 @@ * video_detect.c: * Provides acpi_is_video_device() for early scanning of ACPI devices in scan.c * There a Linux specific (Spec does not provide a HID for video devices) is - * assinged + * assigned * * After PCI devices are glued with ACPI devices * acpi_get_pci_dev() can be called to identify ACPI graphics @@ -83,16 +83,16 @@ long acpi_is_video_device(struct acpi_device *device) if (!device) return 0; - /* Does this device able to support video switching ? */ - if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) && + /* Is this device able to support video switching ? */ + if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOD", &h_dummy)) || ACPI_SUCCESS(acpi_get_handle(device->handle, "_DOS", &h_dummy))) video_caps |= ACPI_VIDEO_OUTPUT_SWITCHING; - /* Does this device able to retrieve a video ROM ? */ + /* Is this device able to retrieve a video ROM ? */ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_ROM", &h_dummy))) video_caps |= ACPI_VIDEO_ROM_AVAILABLE; - /* Does this device able to configure which video head to be POSTed ? */ + /* Is this device able to configure which video head to be POSTed ? */ if (ACPI_SUCCESS(acpi_get_handle(device->handle, "_VPO", &h_dummy)) && ACPI_SUCCESS(acpi_get_handle(device->handle, "_GPD", &h_dummy)) && ACPI_SUCCESS(acpi_get_handle(device->handle, "_SPD", &h_dummy))) @@ -101,7 +101,7 @@ long acpi_is_video_device(struct acpi_device *device) /* Only check for backlight functionality if one of the above hit. */ if (video_caps) acpi_walk_namespace(ACPI_TYPE_DEVICE, device->handle, - ACPI_UINT32_MAX, acpi_backlight_cap_match, + ACPI_UINT32_MAX, acpi_backlight_cap_match, NULL, &video_caps, NULL); return video_caps; @@ -137,7 +137,7 @@ find_video(acpi_handle handle, u32 lvl, void *context, void **rv) * * if NULL is passed as argument all ACPI devices are enumerated and * all graphics capabilities of physically present devices are - * summerized and returned. This is cached and done only once. + * summarized and returned. This is cached and done only once. */ long acpi_video_get_capabilities(acpi_handle graphics_handle) { @@ -151,7 +151,7 @@ long acpi_video_get_capabilities(acpi_handle graphics_handle) if (!graphics_handle) { /* Only do the global walk through all graphics devices once */ acpi_walk_namespace(ACPI_TYPE_DEVICE, ACPI_ROOT_OBJECT, - ACPI_UINT32_MAX, find_video, + ACPI_UINT32_MAX, find_video, NULL, &caps, NULL); /* There might be boot param flags set already... */ acpi_video_support |= caps; @@ -173,7 +173,7 @@ long acpi_video_get_capabilities(acpi_handle graphics_handle) return 0; } acpi_walk_namespace(ACPI_TYPE_DEVICE, graphics_handle, - ACPI_UINT32_MAX, find_video, + ACPI_UINT32_MAX, find_video, NULL, &caps, NULL); } ACPI_DEBUG_PRINT((ACPI_DB_INFO, "We have 0x%lX video support %s %s\n", |