diff options
Diffstat (limited to 'drivers/acpi')
-rw-r--r-- | drivers/acpi/acpica/acobject.h | 1 | ||||
-rw-r--r-- | drivers/acpi/acpica/evhandler.c | 7 | ||||
-rw-r--r-- | drivers/acpi/acpica/evregion.c | 64 | ||||
-rw-r--r-- | drivers/acpi/acpica/evxfregn.c | 2 | ||||
-rw-r--r-- | drivers/acpi/acpica/nsaccess.c | 3 | ||||
-rw-r--r-- | drivers/acpi/arm64/iort.c | 55 | ||||
-rw-r--r-- | drivers/acpi/internal.h | 6 | ||||
-rw-r--r-- | drivers/acpi/processor_idle.c | 5 | ||||
-rw-r--r-- | drivers/acpi/scan.c | 88 | ||||
-rw-r--r-- | drivers/acpi/tables.c | 42 | ||||
-rw-r--r-- | drivers/acpi/video_detect.c | 8 |
11 files changed, 223 insertions, 58 deletions
diff --git a/drivers/acpi/acpica/acobject.h b/drivers/acpi/acpica/acobject.h index 9f0219a8cb98..dd7efafcb103 100644 --- a/drivers/acpi/acpica/acobject.h +++ b/drivers/acpi/acpica/acobject.h @@ -284,6 +284,7 @@ struct acpi_object_addr_handler { acpi_adr_space_handler handler; struct acpi_namespace_node *node; /* Parent device */ void *context; + acpi_mutex context_mutex; acpi_adr_space_setup setup; union acpi_operand_object *region_list; /* Regions using this handler */ union acpi_operand_object *next; diff --git a/drivers/acpi/acpica/evhandler.c b/drivers/acpi/acpica/evhandler.c index 5884eba047f7..3438dc187efb 100644 --- a/drivers/acpi/acpica/evhandler.c +++ b/drivers/acpi/acpica/evhandler.c @@ -489,6 +489,13 @@ acpi_ev_install_space_handler(struct acpi_namespace_node *node, /* Init handler obj */ + status = + acpi_os_create_mutex(&handler_obj->address_space.context_mutex); + if (ACPI_FAILURE(status)) { + acpi_ut_remove_reference(handler_obj); + goto unlock_and_exit; + } + handler_obj->address_space.space_id = (u8)space_id; handler_obj->address_space.handler_flags = flags; handler_obj->address_space.region_list = NULL; diff --git a/drivers/acpi/acpica/evregion.c b/drivers/acpi/acpica/evregion.c index 738d4b231f34..980efc9bd5ee 100644 --- a/drivers/acpi/acpica/evregion.c +++ b/drivers/acpi/acpica/evregion.c @@ -111,6 +111,8 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, union acpi_operand_object *region_obj2; void *region_context = NULL; struct acpi_connection_info *context; + acpi_mutex context_mutex; + u8 context_locked; acpi_physical_address address; ACPI_FUNCTION_TRACE(ev_address_space_dispatch); @@ -135,6 +137,8 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, } context = handler_desc->address_space.context; + context_mutex = handler_desc->address_space.context_mutex; + context_locked = FALSE; /* * It may be the case that the region has never been initialized. @@ -203,6 +207,23 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, handler = handler_desc->address_space.handler; address = (region_obj->region.address + region_offset); + ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, + "Handler %p (@%p) Address %8.8X%8.8X [%s]\n", + ®ion_obj->region.handler->address_space, handler, + ACPI_FORMAT_UINT64(address), + acpi_ut_get_region_name(region_obj->region. + space_id))); + + if (!(handler_desc->address_space.handler_flags & + ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { + /* + * For handlers other than the default (supplied) handlers, we must + * exit the interpreter because the handler *might* block -- we don't + * know what it will do, so we can't hold the lock on the interpreter. + */ + acpi_ex_exit_interpreter(); + } + /* * Special handling for generic_serial_bus and general_purpose_io: * There are three extra parameters that must be passed to the @@ -211,6 +232,11 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, * 2) Length of the above buffer * 3) Actual access length from the access_as() op * + * Since we pass these extra parameters via the context, which is + * shared between threads, we must lock the context to avoid these + * parameters being changed from another thread before the handler + * has completed running. + * * In addition, for general_purpose_io, the Address and bit_width fields * are defined as follows: * 1) Address is the pin number index of the field (bit offset from @@ -220,6 +246,14 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, if ((region_obj->region.space_id == ACPI_ADR_SPACE_GSBUS) && context && field_obj) { + status = + acpi_os_acquire_mutex(context_mutex, ACPI_WAIT_FOREVER); + if (ACPI_FAILURE(status)) { + goto re_enter_interpreter; + } + + context_locked = TRUE; + /* Get the Connection (resource_template) buffer */ context->connection = field_obj->field.resource_buffer; @@ -229,6 +263,14 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, if ((region_obj->region.space_id == ACPI_ADR_SPACE_GPIO) && context && field_obj) { + status = + acpi_os_acquire_mutex(context_mutex, ACPI_WAIT_FOREVER); + if (ACPI_FAILURE(status)) { + goto re_enter_interpreter; + } + + context_locked = TRUE; + /* Get the Connection (resource_template) buffer */ context->connection = field_obj->field.resource_buffer; @@ -238,28 +280,15 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, bit_width = field_obj->field.bit_length; } - ACPI_DEBUG_PRINT((ACPI_DB_OPREGION, - "Handler %p (@%p) Address %8.8X%8.8X [%s]\n", - ®ion_obj->region.handler->address_space, handler, - ACPI_FORMAT_UINT64(address), - acpi_ut_get_region_name(region_obj->region. - space_id))); - - if (!(handler_desc->address_space.handler_flags & - ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { - /* - * For handlers other than the default (supplied) handlers, we must - * exit the interpreter because the handler *might* block -- we don't - * know what it will do, so we can't hold the lock on the interpreter. - */ - acpi_ex_exit_interpreter(); - } - /* Call the handler */ status = handler(function, address, bit_width, value, context, region_obj2->extra.region_context); + if (context_locked) { + acpi_os_release_mutex(context_mutex); + } + if (ACPI_FAILURE(status)) { ACPI_EXCEPTION((AE_INFO, status, "Returned by Handler for [%s]", acpi_ut_get_region_name(region_obj->region. @@ -276,6 +305,7 @@ acpi_ev_address_space_dispatch(union acpi_operand_object *region_obj, } } +re_enter_interpreter: if (!(handler_desc->address_space.handler_flags & ACPI_ADDR_HANDLER_DEFAULT_INSTALLED)) { /* diff --git a/drivers/acpi/acpica/evxfregn.c b/drivers/acpi/acpica/evxfregn.c index da97fd0c6b51..3bb06f17a18b 100644 --- a/drivers/acpi/acpica/evxfregn.c +++ b/drivers/acpi/acpica/evxfregn.c @@ -201,6 +201,8 @@ acpi_remove_address_space_handler(acpi_handle device, /* Now we can delete the handler object */ + acpi_os_release_mutex(handler_obj->address_space. + context_mutex); acpi_ut_remove_reference(handler_obj); goto unlock_and_exit; } diff --git a/drivers/acpi/acpica/nsaccess.c b/drivers/acpi/acpica/nsaccess.c index 3f045b5953b2..a0c1a665dfc1 100644 --- a/drivers/acpi/acpica/nsaccess.c +++ b/drivers/acpi/acpica/nsaccess.c @@ -99,13 +99,12 @@ acpi_status acpi_ns_root_initialize(void) * just create and link the new node(s) here. */ new_node = - ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_namespace_node)); + acpi_ns_create_node(*ACPI_CAST_PTR(u32, init_val->name)); if (!new_node) { status = AE_NO_MEMORY; goto unlock_and_exit; } - ACPI_COPY_NAMESEG(new_node->name.ascii, init_val->name); new_node->descriptor_type = ACPI_DESC_TYPE_NAMED; new_node->type = init_val->type; diff --git a/drivers/acpi/arm64/iort.c b/drivers/acpi/arm64/iort.c index 94f34109695c..2494138a6905 100644 --- a/drivers/acpi/arm64/iort.c +++ b/drivers/acpi/arm64/iort.c @@ -1730,3 +1730,58 @@ void __init acpi_iort_init(void) iort_init_platform_devices(); } + +#ifdef CONFIG_ZONE_DMA +/* + * Extract the highest CPU physical address accessible to all DMA masters in + * the system. PHYS_ADDR_MAX is returned when no constrained device is found. + */ +phys_addr_t __init acpi_iort_dma_get_max_cpu_address(void) +{ + phys_addr_t limit = PHYS_ADDR_MAX; + struct acpi_iort_node *node, *end; + struct acpi_table_iort *iort; + acpi_status status; + int i; + + if (acpi_disabled) + return limit; + + status = acpi_get_table(ACPI_SIG_IORT, 0, + (struct acpi_table_header **)&iort); + if (ACPI_FAILURE(status)) + return limit; + + node = ACPI_ADD_PTR(struct acpi_iort_node, iort, iort->node_offset); + end = ACPI_ADD_PTR(struct acpi_iort_node, iort, iort->header.length); + + for (i = 0; i < iort->node_count; i++) { + if (node >= end) + break; + + switch (node->type) { + struct acpi_iort_named_component *ncomp; + struct acpi_iort_root_complex *rc; + phys_addr_t local_limit; + + case ACPI_IORT_NODE_NAMED_COMPONENT: + ncomp = (struct acpi_iort_named_component *)node->node_data; + local_limit = DMA_BIT_MASK(ncomp->memory_address_limit); + limit = min_not_zero(limit, local_limit); + break; + + case ACPI_IORT_NODE_PCI_ROOT_COMPLEX: + if (node->revision < 1) + break; + + rc = (struct acpi_iort_root_complex *)node->node_data; + local_limit = DMA_BIT_MASK(rc->memory_address_limit); + limit = min_not_zero(limit, local_limit); + break; + } + node = ACPI_ADD_PTR(struct acpi_iort_node, node, node->length); + } + acpi_put_table(&iort->header); + return limit; +} +#endif diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h index aee023ad0237..a958ad60a339 100644 --- a/drivers/acpi/internal.h +++ b/drivers/acpi/internal.h @@ -9,6 +9,8 @@ #ifndef _ACPI_INTERNAL_H_ #define _ACPI_INTERNAL_H_ +#include <linux/idr.h> + #define PREFIX "ACPI: " int early_acpi_osi_init(void); @@ -96,9 +98,11 @@ void acpi_scan_table_handler(u32 event, void *table, void *context); extern struct list_head acpi_bus_id_list; +#define ACPI_MAX_DEVICE_INSTANCES 4096 + struct acpi_device_bus_id { const char *bus_id; - unsigned int instance_no; + struct ida instance_ida; struct list_head node; }; diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index f66236cff69b..fb161a21d0ae 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -29,6 +29,7 @@ */ #ifdef CONFIG_X86 #include <asm/apic.h> +#include <asm/cpu.h> #endif #define ACPI_PROCESSOR_CLASS "processor" @@ -542,6 +543,10 @@ static int acpi_idle_play_dead(struct cpuidle_device *dev, int index) wait_for_freeze(); } else return -ENODEV; + +#if defined(CONFIG_X86) && defined(CONFIG_HOTPLUG_CPU) + cond_wakeup_cpu0(); +#endif } /* Never reached */ diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c index dca5cc423cd4..b47f14ac75ae 100644 --- a/drivers/acpi/scan.c +++ b/drivers/acpi/scan.c @@ -482,9 +482,8 @@ static void acpi_device_del(struct acpi_device *device) list_for_each_entry(acpi_device_bus_id, &acpi_bus_id_list, node) if (!strcmp(acpi_device_bus_id->bus_id, acpi_device_hid(device))) { - if (acpi_device_bus_id->instance_no > 0) - acpi_device_bus_id->instance_no--; - else { + ida_simple_remove(&acpi_device_bus_id->instance_ida, device->pnp.instance_no); + if (ida_is_empty(&acpi_device_bus_id->instance_ida)) { list_del(&acpi_device_bus_id->node); kfree_const(acpi_device_bus_id->bus_id); kfree(acpi_device_bus_id); @@ -623,12 +622,38 @@ void acpi_bus_put_acpi_device(struct acpi_device *adev) put_device(&adev->dev); } +static struct acpi_device_bus_id *acpi_device_bus_id_match(const char *dev_id) +{ + struct acpi_device_bus_id *acpi_device_bus_id; + + /* Find suitable bus_id and instance number in 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, dev_id)) + return acpi_device_bus_id; + } + return NULL; +} + +static int acpi_device_set_name(struct acpi_device *device, + struct acpi_device_bus_id *acpi_device_bus_id) +{ + struct ida *instance_ida = &acpi_device_bus_id->instance_ida; + int result; + + result = ida_simple_get(instance_ida, 0, ACPI_MAX_DEVICE_INSTANCES, GFP_KERNEL); + if (result < 0) + return result; + + device->pnp.instance_no = result; + dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, result); + return 0; +} + int acpi_device_add(struct acpi_device *device, void (*release)(struct device *)) { + struct acpi_device_bus_id *acpi_device_bus_id; int result; - struct acpi_device_bus_id *acpi_device_bus_id, *new_bus_id; - int found = 0; if (device->handle) { acpi_status status; @@ -654,41 +679,38 @@ int acpi_device_add(struct acpi_device *device, INIT_LIST_HEAD(&device->del_list); mutex_init(&device->physical_node_lock); - new_bus_id = kzalloc(sizeof(struct acpi_device_bus_id), GFP_KERNEL); - if (!new_bus_id) { - pr_err(PREFIX "Memory allocation error\n"); - result = -ENOMEM; - goto err_detach; - } - mutex_lock(&acpi_device_lock); - /* - * Find suitable bus_id and instance number in acpi_bus_id_list - * 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, - acpi_device_hid(device))) { - acpi_device_bus_id->instance_no++; - found = 1; - kfree(new_bus_id); - break; + + acpi_device_bus_id = acpi_device_bus_id_match(acpi_device_hid(device)); + if (acpi_device_bus_id) { + result = acpi_device_set_name(device, acpi_device_bus_id); + if (result) + goto err_unlock; + } else { + acpi_device_bus_id = kzalloc(sizeof(*acpi_device_bus_id), + GFP_KERNEL); + if (!acpi_device_bus_id) { + result = -ENOMEM; + goto err_unlock; } - } - if (!found) { - acpi_device_bus_id = new_bus_id; acpi_device_bus_id->bus_id = kstrdup_const(acpi_device_hid(device), GFP_KERNEL); if (!acpi_device_bus_id->bus_id) { - pr_err(PREFIX "Memory allocation error for bus id\n"); + kfree(acpi_device_bus_id); result = -ENOMEM; - goto err_free_new_bus_id; + goto err_unlock; + } + + ida_init(&acpi_device_bus_id->instance_ida); + + result = acpi_device_set_name(device, acpi_device_bus_id); + if (result) { + kfree(acpi_device_bus_id); + goto err_unlock; } - acpi_device_bus_id->instance_no = 0; list_add_tail(&acpi_device_bus_id->node, &acpi_bus_id_list); } - dev_set_name(&device->dev, "%s:%02x", acpi_device_bus_id->bus_id, acpi_device_bus_id->instance_no); if (device->parent) list_add_tail(&device->node, &device->parent->children); @@ -720,13 +742,9 @@ int acpi_device_add(struct acpi_device *device, list_del(&device->node); list_del(&device->wakeup_list); - err_free_new_bus_id: - if (!found) - kfree(new_bus_id); - + err_unlock: mutex_unlock(&acpi_device_lock); - err_detach: acpi_detach_data(device->handle, acpi_scan_drop_device); return result; } diff --git a/drivers/acpi/tables.c b/drivers/acpi/tables.c index e48690a006a4..9d581045acff 100644 --- a/drivers/acpi/tables.c +++ b/drivers/acpi/tables.c @@ -780,7 +780,7 @@ acpi_status acpi_os_table_override(struct acpi_table_header *existing_table, } /* - * acpi_table_init() + * acpi_locate_initial_tables() * * find RSDP, find and checksum SDT/XSDT. * checksum all tables, print SDT/XSDT @@ -788,7 +788,7 @@ acpi_status acpi_os_table_override(struct acpi_table_header *existing_table, * result: sdt_entry[] is initialized */ -int __init acpi_table_init(void) +int __init acpi_locate_initial_tables(void) { acpi_status status; @@ -803,9 +803,45 @@ int __init acpi_table_init(void) status = acpi_initialize_tables(initial_tables, ACPI_MAX_TABLES, 0); if (ACPI_FAILURE(status)) return -EINVAL; - acpi_table_initrd_scan(); + return 0; +} + +void __init acpi_reserve_initial_tables(void) +{ + int i; + + for (i = 0; i < ACPI_MAX_TABLES; i++) { + struct acpi_table_desc *table_desc = &initial_tables[i]; + u64 start = table_desc->address; + u64 size = table_desc->length; + + if (!start || !size) + break; + + pr_info("Reserving %4s table memory at [mem 0x%llx-0x%llx]\n", + table_desc->signature.ascii, start, start + size - 1); + + memblock_reserve(start, size); + } +} + +void __init acpi_table_init_complete(void) +{ + acpi_table_initrd_scan(); check_multiple_madt(); +} + +int __init acpi_table_init(void) +{ + int ret; + + ret = acpi_locate_initial_tables(); + if (ret) + return ret; + + acpi_table_init_complete(); + return 0; } diff --git a/drivers/acpi/video_detect.c b/drivers/acpi/video_detect.c index 4f5463b2a217..83cd4c95faf0 100644 --- a/drivers/acpi/video_detect.c +++ b/drivers/acpi/video_detect.c @@ -140,6 +140,14 @@ static const struct dmi_system_id video_detect_dmi_table[] = { }, { .callback = video_detect_force_vendor, + .ident = "GIGABYTE GB-BXBT-2807", + .matches = { + DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"), + DMI_MATCH(DMI_PRODUCT_NAME, "GB-BXBT-2807"), + }, + }, + { + .callback = video_detect_force_vendor, .ident = "Sony VPCEH3U1E", .matches = { DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"), |