X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Facpi%2Fbus.c;h=743576bf1bd79e5e7b8c6fc10bafb674d88c8803;hb=3374cd1abd478f767aaedf2c21d109596ff0fe72;hp=ce3c0a2cbac4dc81e9c5ff2712b100ec8a942b46;hpb=6697c05296fab4d113c7144459b72b6172b485a5;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/acpi/bus.c b/drivers/acpi/bus.c index ce3c0a2..743576b 100644 --- a/drivers/acpi/bus.c +++ b/drivers/acpi/bus.c @@ -32,11 +32,16 @@ #include #include #include +#include #ifdef CONFIG_X86 #include #endif +#include #include #include +#include + +#include "internal.h" #define _COMPONENT ACPI_BUS_COMPONENT ACPI_MODULE_NAME("bus"); @@ -47,6 +52,23 @@ EXPORT_SYMBOL(acpi_root_dir); #define STRUCT_TO_INT(s) (*((int*)&s)) +static int set_power_nocheck(const struct dmi_system_id *id) +{ + printk(KERN_NOTICE PREFIX "%s detected - " + "disable power check in power transistion\n", id->ident); + acpi_power_nocheck = 1; + return 0; +} +static struct dmi_system_id __cpuinitdata power_nocheck_dmi_table[] = { + { + set_power_nocheck, "HP Pavilion 05", { + DMI_MATCH(DMI_BIOS_VENDOR, "Phoenix Technologies LTD"), + DMI_MATCH(DMI_SYS_VENDOR, "HP Pavilion 05"), + DMI_MATCH(DMI_PRODUCT_VERSION, "2001211RE101GLEND") }, NULL}, + {}, +}; + + /* -------------------------------------------------------------------------- Device Management -------------------------------------------------------------------------- */ @@ -73,55 +95,50 @@ 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 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; +} - /* - * Otherwise we assume the status of our parent (unless we don't - * have one, in which case status is implied). - */ - else if (device->parent) - device->status = device->parent->status; - 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) { - printk(KERN_WARNING PREFIX "Device [%s] status [%08x]: " - "functional but not present; setting present\n", - device->pnp.bus_id, (u32) STRUCT_TO_INT(device->status)); - device->status.present = 1; + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device [%s] status [%08x]: " + "functional but not present;\n", + device->pnp.bus_id, + (u32) STRUCT_TO_INT(device->status))); } 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, - u32 function, void *context) + void *context) { return; } @@ -154,7 +171,7 @@ int acpi_bus_get_power(acpi_handle handle, int *state) int result = 0; acpi_status status = 0; struct acpi_device *device = NULL; - unsigned long psc = 0; + unsigned long long psc = 0; result = acpi_bus_get_device(handle, &device); @@ -174,16 +191,16 @@ int acpi_bus_get_power(acpi_handle handle, int *state) * Get the device's power state either directly (via _PSC) or * indirectly (via power resources). */ - if (device->power.flags.explicit_get) { + if (device->power.flags.power_resources) { + result = acpi_power_get_inferred_state(device); + if (result) + return result; + } else if (device->power.flags.explicit_get) { status = acpi_evaluate_integer(device->handle, "_PSC", NULL, &psc); if (ACPI_FAILURE(status)) return -ENODEV; device->power.state = (int)psc; - } else if (device->power.flags.power_resources) { - result = acpi_power_get_inferred_state(device); - if (result) - return result; } *state = device->power.state; @@ -222,7 +239,19 @@ int acpi_bus_set_power(acpi_handle handle, int state) /* * Get device's current power state */ - acpi_bus_get_power(device->handle, &device->power.state); + if (!acpi_power_nocheck) { + /* + * Maybe the incorrect power state is returned on the bogus + * bios, which is different with the real power state. + * For example: the bios returns D0 state and the real power + * state is D3. OS expects to set the device to D0 state. In + * such case if OS uses the power state returned by the BIOS, + * the device can't be transisted to the correct power state. + * So if the acpi_power_nocheck is set, it is unnecessary to + * get the power state by calling acpi_bus_get_power. + */ + acpi_bus_get_power(device->handle, &device->power.state); + } if ((state == device->power.state) && !device->flags.force_power_state) { ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device is already at D%d\n", state)); @@ -280,7 +309,7 @@ int acpi_bus_set_power(acpi_handle handle, int state) end: if (result) printk(KERN_WARNING PREFIX - "Transitioning device [%s] to D%d\n", + "Device [%s] failed to transition to D%d\n", device->pnp.bus_id, state); else { device->power.state = state; @@ -294,6 +323,189 @@ int acpi_bus_set_power(acpi_handle handle, int state) EXPORT_SYMBOL(acpi_bus_set_power); +bool acpi_bus_power_manageable(acpi_handle handle) +{ + struct acpi_device *device; + int result; + + result = acpi_bus_get_device(handle, &device); + return result ? false : device->flags.power_manageable; +} + +EXPORT_SYMBOL(acpi_bus_power_manageable); + +bool acpi_bus_can_wakeup(acpi_handle handle) +{ + struct acpi_device *device; + int result; + + result = acpi_bus_get_device(handle, &device); + return result ? false : device->wakeup.flags.valid; +} + +EXPORT_SYMBOL(acpi_bus_can_wakeup); + +static void acpi_print_osc_error(acpi_handle handle, + struct acpi_osc_context *context, char *error) +{ + struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER}; + int i; + + if (ACPI_FAILURE(acpi_get_name(handle, ACPI_FULL_PATHNAME, &buffer))) + printk(KERN_DEBUG "%s\n", error); + else { + printk(KERN_DEBUG "%s:%s\n", (char *)buffer.pointer, error); + kfree(buffer.pointer); + } + printk(KERN_DEBUG"_OSC request data:"); + for (i = 0; i < context->cap.length; i += sizeof(u32)) + printk("%x ", *((u32 *)(context->cap.pointer + i))); + printk("\n"); +} + +static u8 hex_val(unsigned char c) +{ + return isdigit(c) ? c - '0' : toupper(c) - 'A' + 10; +} + +static acpi_status acpi_str_to_uuid(char *str, u8 *uuid) +{ + int i; + static int opc_map_to_uuid[16] = {6, 4, 2, 0, 11, 9, 16, 14, 19, 21, + 24, 26, 28, 30, 32, 34}; + + if (strlen(str) != 36) + return AE_BAD_PARAMETER; + for (i = 0; i < 36; i++) { + if (i == 8 || i == 13 || i == 18 || i == 23) { + if (str[i] != '-') + return AE_BAD_PARAMETER; + } else if (!isxdigit(str[i])) + return AE_BAD_PARAMETER; + } + for (i = 0; i < 16; i++) { + uuid[i] = hex_val(str[opc_map_to_uuid[i]]) << 4; + uuid[i] |= hex_val(str[opc_map_to_uuid[i] + 1]); + } + return AE_OK; +} + +acpi_status acpi_run_osc(acpi_handle handle, struct acpi_osc_context *context) +{ + acpi_status status; + struct acpi_object_list input; + union acpi_object in_params[4]; + union acpi_object *out_obj; + u8 uuid[16]; + u32 errors; + struct acpi_buffer output = {ACPI_ALLOCATE_BUFFER, NULL}; + + if (!context) + return AE_ERROR; + if (ACPI_FAILURE(acpi_str_to_uuid(context->uuid_str, uuid))) + return AE_ERROR; + context->ret.length = ACPI_ALLOCATE_BUFFER; + context->ret.pointer = NULL; + + /* Setting up input parameters */ + input.count = 4; + input.pointer = in_params; + in_params[0].type = ACPI_TYPE_BUFFER; + in_params[0].buffer.length = 16; + in_params[0].buffer.pointer = uuid; + in_params[1].type = ACPI_TYPE_INTEGER; + in_params[1].integer.value = context->rev; + in_params[2].type = ACPI_TYPE_INTEGER; + in_params[2].integer.value = context->cap.length/sizeof(u32); + in_params[3].type = ACPI_TYPE_BUFFER; + in_params[3].buffer.length = context->cap.length; + in_params[3].buffer.pointer = context->cap.pointer; + + status = acpi_evaluate_object(handle, "_OSC", &input, &output); + if (ACPI_FAILURE(status)) + return status; + + if (!output.length) + return AE_NULL_OBJECT; + + out_obj = output.pointer; + if (out_obj->type != ACPI_TYPE_BUFFER + || out_obj->buffer.length != context->cap.length) { + acpi_print_osc_error(handle, context, + "_OSC evaluation returned wrong type"); + status = AE_TYPE; + goto out_kfree; + } + /* Need to ignore the bit0 in result code */ + errors = *((u32 *)out_obj->buffer.pointer) & ~(1 << 0); + if (errors) { + if (errors & OSC_REQUEST_ERROR) + acpi_print_osc_error(handle, context, + "_OSC request failed"); + if (errors & OSC_INVALID_UUID_ERROR) + acpi_print_osc_error(handle, context, + "_OSC invalid UUID"); + if (errors & OSC_INVALID_REVISION_ERROR) + acpi_print_osc_error(handle, context, + "_OSC invalid revision"); + if (errors & OSC_CAPABILITIES_MASK_ERROR) { + if (((u32 *)context->cap.pointer)[OSC_QUERY_TYPE] + & OSC_QUERY_ENABLE) + goto out_success; + status = AE_SUPPORT; + goto out_kfree; + } + status = AE_ERROR; + goto out_kfree; + } +out_success: + context->ret.length = out_obj->buffer.length; + context->ret.pointer = kmalloc(context->ret.length, GFP_KERNEL); + if (!context->ret.pointer) { + status = AE_NO_MEMORY; + goto out_kfree; + } + memcpy(context->ret.pointer, out_obj->buffer.pointer, + context->ret.length); + status = AE_OK; + +out_kfree: + kfree(output.pointer); + if (status != AE_OK) + context->ret.pointer = NULL; + return status; +} +EXPORT_SYMBOL(acpi_run_osc); + +static u8 sb_uuid_str[] = "0811B06E-4A27-44F9-8D60-3CBBC22E7B48"; +static void acpi_bus_osc_support(void) +{ + u32 capbuf[2]; + struct acpi_osc_context context = { + .uuid_str = sb_uuid_str, + .rev = 1, + .cap.length = 8, + .cap.pointer = capbuf, + }; + acpi_handle handle; + + capbuf[OSC_QUERY_TYPE] = OSC_QUERY_ENABLE; + capbuf[OSC_SUPPORT_TYPE] = OSC_SB_PR3_SUPPORT; /* _PR3 is in use */ +#if defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR) ||\ + defined(CONFIG_ACPI_PROCESSOR_AGGREGATOR_MODULE) + capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PAD_SUPPORT; +#endif + +#if defined(CONFIG_ACPI_PROCESSOR) || defined(CONFIG_ACPI_PROCESSOR_MODULE) + capbuf[OSC_SUPPORT_TYPE] |= OSC_SB_PPC_OST_SUPPORT; +#endif + if (ACPI_FAILURE(acpi_get_handle(NULL, "\\_SB", &handle))) + return; + if (ACPI_SUCCESS(acpi_run_osc(handle, &context))) + kfree(context.ret.pointer); + /* do we need to check the returned cap? Sounds no */ +} + /* -------------------------------------------------------------------------- Event Management -------------------------------------------------------------------------- */ @@ -315,7 +527,7 @@ int acpi_bus_generate_proc_event4(const char *device_class, const char *bus_id, if (!event_is_open) return 0; - event = kmalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC); + event = kzalloc(sizeof(struct acpi_bus_event), GFP_ATOMIC); if (!event) return -ENOMEM; @@ -373,10 +585,11 @@ int acpi_bus_receive_event(struct acpi_bus_event *event) } spin_lock_irqsave(&acpi_bus_event_lock, flags); - entry = - list_entry(acpi_bus_event_list.next, struct acpi_bus_event, node); - if (entry) + if (!list_empty(&acpi_bus_event_list)) { + entry = list_entry(acpi_bus_event_list.next, + struct acpi_bus_event, node); list_del(&entry->node); + } spin_unlock_irqrestore(&acpi_bus_event_lock, flags); if (!entry) @@ -395,18 +608,16 @@ int acpi_bus_receive_event(struct acpi_bus_event *event) Notification Handling -------------------------------------------------------------------------- */ -static int -acpi_bus_check_device(struct acpi_device *device, int *status_changed) +static void acpi_bus_check_device(acpi_handle handle) { - acpi_status status = 0; + struct acpi_device *device; + acpi_status status; struct acpi_device_status old_status; - + if (acpi_bus_get_device(handle, &device)) + return; if (!device) - return -EINVAL; - - if (status_changed) - *status_changed = 0; + return; old_status = device->status; @@ -416,22 +627,15 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed) */ if (device->parent && !device->parent->status.present) { device->status = device->parent->status; - if (STRUCT_TO_INT(old_status) != STRUCT_TO_INT(device->status)) { - if (status_changed) - *status_changed = 1; - } - return 0; + return; } status = acpi_bus_get_status(device); if (ACPI_FAILURE(status)) - return -ENODEV; + return; if (STRUCT_TO_INT(old_status) == STRUCT_TO_INT(device->status)) - return 0; - - if (status_changed) - *status_changed = 1; + return; /* * Device Insertion/Removal @@ -443,34 +647,31 @@ acpi_bus_check_device(struct acpi_device *device, int *status_changed) ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Device removal detected\n")); /* TBD: Handle device removal */ } - - return 0; } -static int acpi_bus_check_scope(struct acpi_device *device) +static void acpi_bus_check_scope(acpi_handle handle) { - int result = 0; - int status_changed = 0; - - - if (!device) - return -EINVAL; - /* Status Change? */ - result = acpi_bus_check_device(device, &status_changed); - if (result) - return result; - - if (!status_changed) - return 0; + acpi_bus_check_device(handle); /* * TBD: Enumerate child devices within this device's scope and * run acpi_bus_check_device()'s on them. */ +} - return 0; +static BLOCKING_NOTIFIER_HEAD(acpi_bus_notify_list); +int register_acpi_bus_notifier(struct notifier_block *nb) +{ + return blocking_notifier_chain_register(&acpi_bus_notify_list, nb); +} +EXPORT_SYMBOL_GPL(register_acpi_bus_notifier); + +void unregister_acpi_bus_notifier(struct notifier_block *nb) +{ + blocking_notifier_chain_unregister(&acpi_bus_notify_list, nb); } +EXPORT_SYMBOL_GPL(unregister_acpi_bus_notifier); /** * acpi_bus_notify @@ -479,20 +680,19 @@ static int acpi_bus_check_scope(struct acpi_device *device) */ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) { - int result = 0; struct acpi_device *device = NULL; + struct acpi_driver *driver; + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Notification %#02x to handle %p\n", + type, handle)); - if (acpi_bus_get_device(handle, &device)) - return; + blocking_notifier_call_chain(&acpi_bus_notify_list, + type, (void *)handle); switch (type) { case ACPI_NOTIFY_BUS_CHECK: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received BUS CHECK notification for device [%s]\n", - device->pnp.bus_id)); - result = acpi_bus_check_scope(device); + acpi_bus_check_scope(handle); /* * TBD: We'll need to outsource certain events to non-ACPI * drivers via the device manager (device.c). @@ -500,10 +700,7 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) break; case ACPI_NOTIFY_DEVICE_CHECK: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received DEVICE CHECK notification for device [%s]\n", - device->pnp.bus_id)); - result = acpi_bus_check_device(device, NULL); + acpi_bus_check_device(handle); /* * TBD: We'll need to outsource certain events to non-ACPI * drivers via the device manager (device.c). @@ -511,44 +708,26 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) break; case ACPI_NOTIFY_DEVICE_WAKE: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received DEVICE WAKE notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; case ACPI_NOTIFY_EJECT_REQUEST: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received EJECT REQUEST notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; case ACPI_NOTIFY_DEVICE_CHECK_LIGHT: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received DEVICE CHECK LIGHT notification for device [%s]\n", - device->pnp.bus_id)); /* TBD: Exactly what does 'light' mean? */ break; case ACPI_NOTIFY_FREQUENCY_MISMATCH: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received FREQUENCY MISMATCH notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; case ACPI_NOTIFY_BUS_MODE_MISMATCH: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received BUS MODE MISMATCH notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; case ACPI_NOTIFY_POWER_FAULT: - ACPI_DEBUG_PRINT((ACPI_DB_INFO, - "Received POWER FAULT notification for device [%s]\n", - device->pnp.bus_id)); /* TBD */ break; @@ -559,7 +738,13 @@ static void acpi_bus_notify(acpi_handle handle, u32 type, void *data) break; } - return; + acpi_bus_get_device(handle, &device); + if (device) { + driver = device->driver; + if (driver && driver->ops.notify && + (driver->flags & ACPI_DRIVER_ALL_NOTIFY_EVENTS)) + driver->ops.notify(device, type); + } } /* -------------------------------------------------------------------------- @@ -610,7 +795,7 @@ static int __init acpi_bus_init_irq(void) return 0; } -acpi_native_uint acpi_gbl_permanent_mmap; +u8 acpi_gbl_permanent_mmap; void __init acpi_early_init(void) @@ -690,8 +875,7 @@ static int __init acpi_bus_init(void) acpi_status status = AE_OK; extern acpi_status acpi_os_initialize1(void); - - status = acpi_os_initialize1(); + acpi_os_initialize1(); status = acpi_enable_subsystem(ACPI_NO_HARDWARE_INIT | ACPI_NO_ACPI_ENABLE); @@ -701,12 +885,6 @@ static int __init acpi_bus_init(void) goto error1; } - if (ACPI_FAILURE(status)) { - printk(KERN_ERR PREFIX - "Unable to initialize ACPI OS objects\n"); - goto error1; - } -#ifdef CONFIG_ACPI_EC /* * ACPI 2.0 requires the EC driver to be loaded and work before * the EC device is found in the namespace (i.e. before acpi_initialize_objects() @@ -717,7 +895,8 @@ static int __init acpi_bus_init(void) */ status = acpi_ec_ecdt_probe(); /* Ignore result. Not having an ECDT is not fatal. */ -#endif + + acpi_bus_osc_support(); status = acpi_initialize_objects(ACPI_FULL_INITIALIZATION); if (ACPI_FAILURE(status)) { @@ -725,6 +904,14 @@ static int __init acpi_bus_init(void) goto error1; } + acpi_early_processor_set_pdc(); + + /* + * Maybe EC region is required at bus_scan/acpi_get_devices. So it + * is necessary to enable it as early as possible. + */ + acpi_boot_ec_enable(); + printk(KERN_INFO PREFIX "Interpreter enabled\n"); /* Initialize sleep structures */ @@ -776,13 +963,15 @@ static int __init acpi_init(void) acpi_kobj = kobject_create_and_add("acpi", firmware_kobj); if (!acpi_kobj) { - printk(KERN_WARNING "%s: kset create error\n", __FUNCTION__); + printk(KERN_WARNING "%s: kset create error\n", __func__); acpi_kobj = NULL; } + init_acpi_device_notify(); result = acpi_bus_init(); if (!result) { + pci_mmcfg_late_init(); if (!(pm_flags & PM_APM)) pm_flags |= PM_ACPI; else { @@ -794,6 +983,22 @@ static int __init acpi_init(void) } else disable_acpi(); + if (acpi_disabled) + return result; + + /* + * If the laptop falls into the DMI check table, the power state check + * will be disabled in the course of device power transistion. + */ + dmi_check_system(power_nocheck_dmi_table); + + acpi_scan_init(); + acpi_ec_init(); + acpi_power_init(); + acpi_system_init(); + acpi_debug_init(); + acpi_sleep_proc_init(); + acpi_wakeup_device_init(); return result; }