X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Facpi%2Facpica%2Fnsxfname.c;h=e611dd961b200ba6f8afd6cebe23b282efe503f7;hb=9919c7619c52d01e89103bca405cc3d4a2b1ac31;hp=9589fea2499790bc4fc989baeb3700d49137390e;hpb=e2f7a7772880458edff1b1cc5a988947229fac26;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/acpi/acpica/nsxfname.c b/drivers/acpi/acpica/nsxfname.c index 9589fea..e611dd9 100644 --- a/drivers/acpi/acpica/nsxfname.c +++ b/drivers/acpi/acpica/nsxfname.c @@ -45,10 +45,17 @@ #include #include "accommon.h" #include "acnamesp.h" +#include "acparser.h" +#include "amlcode.h" #define _COMPONENT ACPI_NAMESPACE ACPI_MODULE_NAME("nsxfname") +/* Local prototypes */ +static char *acpi_ns_copy_device_id(struct acpica_device_id *dest, + struct acpica_device_id *source, + char *string_area); + /****************************************************************************** * * FUNCTION: acpi_get_handle @@ -66,6 +73,7 @@ ACPI_MODULE_NAME("nsxfname") * namespace handle. * ******************************************************************************/ + acpi_status acpi_get_handle(acpi_handle parent, acpi_string pathname, acpi_handle * ret_handle) @@ -85,7 +93,7 @@ acpi_get_handle(acpi_handle parent, /* Convert a parent handle to a prefix node */ if (parent) { - prefix_node = acpi_ns_map_handle_to_node(parent); + prefix_node = acpi_ns_validate_handle(parent); if (!prefix_node) { return (AE_BAD_PARAMETER); } @@ -106,7 +114,7 @@ acpi_get_handle(acpi_handle parent, if (!ACPI_STRCMP(pathname, ACPI_NS_ROOT_PATH)) { *ret_handle = - acpi_ns_convert_entry_to_handle(acpi_gbl_root_node); + ACPI_CAST_PTR(acpi_handle, acpi_gbl_root_node); return (AE_OK); } } else if (!prefix_node) { @@ -121,7 +129,7 @@ acpi_get_handle(acpi_handle parent, status = acpi_ns_get_node(prefix_node, pathname, ACPI_NS_NO_UPSEARCH, &node); if (ACPI_SUCCESS(status)) { - *ret_handle = acpi_ns_convert_entry_to_handle(node); + *ret_handle = ACPI_CAST_PTR(acpi_handle, node); } return (status); @@ -178,7 +186,7 @@ acpi_get_name(acpi_handle handle, u32 name_type, struct acpi_buffer * buffer) return (status); } - node = acpi_ns_map_handle_to_node(handle); + node = acpi_ns_validate_handle(handle); if (!node) { status = AE_BAD_PARAMETER; goto unlock_and_exit; @@ -208,10 +216,38 @@ ACPI_EXPORT_SYMBOL(acpi_get_name) /****************************************************************************** * + * FUNCTION: acpi_ns_copy_device_id + * + * PARAMETERS: Dest - Pointer to the destination DEVICE_ID + * Source - Pointer to the source DEVICE_ID + * string_area - Pointer to where to copy the dest string + * + * RETURN: Pointer to the next string area + * + * DESCRIPTION: Copy a single DEVICE_ID, including the string data. + * + ******************************************************************************/ +static char *acpi_ns_copy_device_id(struct acpica_device_id *dest, + struct acpica_device_id *source, + char *string_area) +{ + /* Create the destination DEVICE_ID */ + + dest->string = string_area; + dest->length = source->length; + + /* Copy actual string and return a pointer to the next string area */ + + ACPI_MEMCPY(string_area, source->string, source->length); + return (string_area + source->length); +} + +/****************************************************************************** + * * FUNCTION: acpi_get_object_info * - * PARAMETERS: Handle - Object Handle - * Buffer - Where the info is returned + * PARAMETERS: Handle - Object Handle + * return_buffer - Where the info is returned * * RETURN: Status * @@ -219,101 +255,130 @@ ACPI_EXPORT_SYMBOL(acpi_get_name) * namespace node and possibly by running several standard * control methods (Such as in the case of a device.) * + * For Device and Processor objects, run the Device _HID, _UID, _CID, _STA, + * _ADR, _sx_w, and _sx_d methods. + * + * Note: Allocates the return buffer, must be freed by the caller. + * ******************************************************************************/ + acpi_status -acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer) +acpi_get_object_info(acpi_handle handle, + struct acpi_device_info **return_buffer) { - acpi_status status; struct acpi_namespace_node *node; struct acpi_device_info *info; - struct acpi_device_info *return_info; - struct acpi_compatible_id_list *cid_list = NULL; - acpi_size size; + struct acpica_device_id_list *cid_list = NULL; + struct acpica_device_id *hid = NULL; + struct acpica_device_id *uid = NULL; + char *next_id_string; + acpi_object_type type; + acpi_name name; + u8 param_count = 0; + u8 valid = 0; + u32 info_size; + u32 i; + acpi_status status; /* Parameter validation */ - if (!handle || !buffer) { + if (!handle || !return_buffer) { return (AE_BAD_PARAMETER); } - status = acpi_ut_validate_buffer(buffer); - if (ACPI_FAILURE(status)) { - return (status); - } - - info = ACPI_ALLOCATE_ZEROED(sizeof(struct acpi_device_info)); - if (!info) { - return (AE_NO_MEMORY); - } - status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); if (ACPI_FAILURE(status)) { goto cleanup; } - node = acpi_ns_map_handle_to_node(handle); + node = acpi_ns_validate_handle(handle); if (!node) { (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); - status = AE_BAD_PARAMETER; - goto cleanup; + return (AE_BAD_PARAMETER); } - /* Init return structure */ - - size = sizeof(struct acpi_device_info); + /* Get the namespace node data while the namespace is locked */ - info->type = node->type; - info->name = node->name.integer; - info->valid = 0; + info_size = sizeof(struct acpi_device_info); + type = node->type; + name = node->name.integer; if (node->type == ACPI_TYPE_METHOD) { - info->param_count = node->object->method.param_count; + param_count = node->object->method.param_count; } status = acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); if (ACPI_FAILURE(status)) { - goto cleanup; + return (status); } - /* If not a device, we are all done */ - - if (info->type == ACPI_TYPE_DEVICE) { + if ((type == ACPI_TYPE_DEVICE) || (type == ACPI_TYPE_PROCESSOR)) { /* - * Get extra info for ACPI Devices objects only: - * Run the Device _HID, _UID, _CID, _STA, _ADR and _sx_d methods. + * Get extra info for ACPI Device/Processor objects only: + * Run the Device _HID, _UID, and _CID methods. * * Note: none of these methods are required, so they may or may - * not be present for this device. The Info->Valid bitfield is used - * to indicate which methods were found and ran successfully. + * not be present for this device. The Info->Valid bitfield is used + * to indicate which methods were found and run successfully. */ /* Execute the Device._HID method */ - status = acpi_ut_execute_HID(node, &info->hardware_id); + status = acpi_ut_execute_HID(node, &hid); if (ACPI_SUCCESS(status)) { - info->valid |= ACPI_VALID_HID; + info_size += hid->length; + valid |= ACPI_VALID_HID; } /* Execute the Device._UID method */ - status = acpi_ut_execute_UID(node, &info->unique_id); + status = acpi_ut_execute_UID(node, &uid); if (ACPI_SUCCESS(status)) { - info->valid |= ACPI_VALID_UID; + info_size += uid->length; + valid |= ACPI_VALID_UID; } /* Execute the Device._CID method */ status = acpi_ut_execute_CID(node, &cid_list); if (ACPI_SUCCESS(status)) { - size += cid_list->size; - info->valid |= ACPI_VALID_CID; + + /* Add size of CID strings and CID pointer array */ + + info_size += + (cid_list->list_size - + sizeof(struct acpica_device_id_list)); + valid |= ACPI_VALID_CID; } + } + + /* + * Now that we have the variable-length data, we can allocate the + * return buffer + */ + info = ACPI_ALLOCATE_ZEROED(info_size); + if (!info) { + status = AE_NO_MEMORY; + goto cleanup; + } + + /* Get the fixed-length data */ + + if ((type == ACPI_TYPE_DEVICE) || (type == ACPI_TYPE_PROCESSOR)) { + /* + * Get extra info for ACPI Device/Processor objects only: + * Run the _STA, _ADR and, sx_w, and _sx_d methods. + * + * Note: none of these methods are required, so they may or may + * not be present for this device. The Info->Valid bitfield is used + * to indicate which methods were found and run successfully. + */ /* Execute the Device._STA method */ status = acpi_ut_execute_STA(node, &info->current_status); if (ACPI_SUCCESS(status)) { - info->valid |= ACPI_VALID_STA; + valid |= ACPI_VALID_STA; } /* Execute the Device._ADR method */ @@ -321,36 +386,100 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer) status = acpi_ut_evaluate_numeric_object(METHOD_NAME__ADR, node, &info->address); if (ACPI_SUCCESS(status)) { - info->valid |= ACPI_VALID_ADR; + valid |= ACPI_VALID_ADR; + } + + /* Execute the Device._sx_w methods */ + + status = acpi_ut_execute_power_methods(node, + acpi_gbl_lowest_dstate_names, + ACPI_NUM_sx_w_METHODS, + info->lowest_dstates); + if (ACPI_SUCCESS(status)) { + valid |= ACPI_VALID_SXWS; } /* Execute the Device._sx_d methods */ - status = acpi_ut_execute_sxds(node, info->highest_dstates); + status = acpi_ut_execute_power_methods(node, + acpi_gbl_highest_dstate_names, + ACPI_NUM_sx_d_METHODS, + info->highest_dstates); if (ACPI_SUCCESS(status)) { - info->valid |= ACPI_VALID_SXDS; + valid |= ACPI_VALID_SXDS; } } - /* Validate/Allocate/Clear caller buffer */ + /* + * Create a pointer to the string area of the return buffer. + * Point to the end of the base struct acpi_device_info structure. + */ + next_id_string = ACPI_CAST_PTR(char, info->compatible_id_list.ids); + if (cid_list) { - status = acpi_ut_initialize_buffer(buffer, size); - if (ACPI_FAILURE(status)) { - goto cleanup; + /* Point past the CID DEVICE_ID array */ + + next_id_string += + ((acpi_size) cid_list->count * + sizeof(struct acpica_device_id)); } - /* Populate the return buffer */ + /* + * Copy the HID, UID, and CIDs to the return buffer. The variable-length + * strings are copied to the reserved area at the end of the buffer. + * + * For HID and CID, check if the ID is a PCI Root Bridge. + */ + if (hid) { + next_id_string = acpi_ns_copy_device_id(&info->hardware_id, + hid, next_id_string); + + if (acpi_ut_is_pci_root_bridge(hid->string)) { + info->flags |= ACPI_PCI_ROOT_BRIDGE; + } + } - return_info = buffer->pointer; - ACPI_MEMCPY(return_info, info, sizeof(struct acpi_device_info)); + if (uid) { + next_id_string = acpi_ns_copy_device_id(&info->unique_id, + uid, next_id_string); + } if (cid_list) { - ACPI_MEMCPY(&return_info->compatibility_id, cid_list, - cid_list->size); + info->compatible_id_list.count = cid_list->count; + info->compatible_id_list.list_size = cid_list->list_size; + + /* Copy each CID */ + + for (i = 0; i < cid_list->count; i++) { + next_id_string = + acpi_ns_copy_device_id(&info->compatible_id_list. + ids[i], &cid_list->ids[i], + next_id_string); + + if (acpi_ut_is_pci_root_bridge(cid_list->ids[i].string)) { + info->flags |= ACPI_PCI_ROOT_BRIDGE; + } + } } + /* Copy the fixed-length data */ + + info->info_size = info_size; + info->type = type; + info->name = name; + info->param_count = param_count; + info->valid = valid; + + *return_buffer = info; + status = AE_OK; + cleanup: - ACPI_FREE(info); + if (hid) { + ACPI_FREE(hid); + } + if (uid) { + ACPI_FREE(uid); + } if (cid_list) { ACPI_FREE(cid_list); } @@ -358,3 +487,151 @@ acpi_get_object_info(acpi_handle handle, struct acpi_buffer * buffer) } ACPI_EXPORT_SYMBOL(acpi_get_object_info) + +/****************************************************************************** + * + * FUNCTION: acpi_install_method + * + * PARAMETERS: Buffer - An ACPI table containing one control method + * + * RETURN: Status + * + * DESCRIPTION: Install a control method into the namespace. If the method + * name already exists in the namespace, it is overwritten. The + * input buffer must contain a valid DSDT or SSDT containing a + * single control method. + * + ******************************************************************************/ +acpi_status acpi_install_method(u8 *buffer) +{ + struct acpi_table_header *table = + ACPI_CAST_PTR(struct acpi_table_header, buffer); + u8 *aml_buffer; + u8 *aml_start; + char *path; + struct acpi_namespace_node *node; + union acpi_operand_object *method_obj; + struct acpi_parse_state parser_state; + u32 aml_length; + u16 opcode; + u8 method_flags; + acpi_status status; + + /* Parameter validation */ + + if (!buffer) { + return AE_BAD_PARAMETER; + } + + /* Table must be a DSDT or SSDT */ + + if (!ACPI_COMPARE_NAME(table->signature, ACPI_SIG_DSDT) && + !ACPI_COMPARE_NAME(table->signature, ACPI_SIG_SSDT)) { + return AE_BAD_HEADER; + } + + /* First AML opcode in the table must be a control method */ + + parser_state.aml = buffer + sizeof(struct acpi_table_header); + opcode = acpi_ps_peek_opcode(&parser_state); + if (opcode != AML_METHOD_OP) { + return AE_BAD_PARAMETER; + } + + /* Extract method information from the raw AML */ + + parser_state.aml += acpi_ps_get_opcode_size(opcode); + parser_state.pkg_end = acpi_ps_get_next_package_end(&parser_state); + path = acpi_ps_get_next_namestring(&parser_state); + method_flags = *parser_state.aml++; + aml_start = parser_state.aml; + aml_length = ACPI_PTR_DIFF(parser_state.pkg_end, aml_start); + + /* + * Allocate resources up-front. We don't want to have to delete a new + * node from the namespace if we cannot allocate memory. + */ + aml_buffer = ACPI_ALLOCATE(aml_length); + if (!aml_buffer) { + return AE_NO_MEMORY; + } + + method_obj = acpi_ut_create_internal_object(ACPI_TYPE_METHOD); + if (!method_obj) { + ACPI_FREE(aml_buffer); + return AE_NO_MEMORY; + } + + /* Lock namespace for acpi_ns_lookup, we may be creating a new node */ + + status = acpi_ut_acquire_mutex(ACPI_MTX_NAMESPACE); + if (ACPI_FAILURE(status)) { + goto error_exit; + } + + /* The lookup either returns an existing node or creates a new one */ + + status = + acpi_ns_lookup(NULL, path, ACPI_TYPE_METHOD, ACPI_IMODE_LOAD_PASS1, + ACPI_NS_DONT_OPEN_SCOPE | ACPI_NS_ERROR_IF_FOUND, + NULL, &node); + + (void)acpi_ut_release_mutex(ACPI_MTX_NAMESPACE); + + if (ACPI_FAILURE(status)) { /* ns_lookup */ + if (status != AE_ALREADY_EXISTS) { + goto error_exit; + } + + /* Node existed previously, make sure it is a method node */ + + if (node->type != ACPI_TYPE_METHOD) { + status = AE_TYPE; + goto error_exit; + } + } + + /* Copy the method AML to the local buffer */ + + ACPI_MEMCPY(aml_buffer, aml_start, aml_length); + + /* Initialize the method object with the new method's information */ + + method_obj->method.aml_start = aml_buffer; + method_obj->method.aml_length = aml_length; + + method_obj->method.param_count = (u8) + (method_flags & AML_METHOD_ARG_COUNT); + + method_obj->method.method_flags = (u8) + (method_flags & ~AML_METHOD_ARG_COUNT); + + if (method_flags & AML_METHOD_SERIALIZED) { + method_obj->method.sync_level = (u8) + ((method_flags & AML_METHOD_SYNC_LEVEL) >> 4); + } + + /* + * Now that it is complete, we can attach the new method object to + * the method Node (detaches/deletes any existing object) + */ + status = acpi_ns_attach_object(node, method_obj, ACPI_TYPE_METHOD); + + /* + * Flag indicates AML buffer is dynamic, must be deleted later. + * Must be set only after attach above. + */ + node->flags |= ANOBJ_ALLOCATED_BUFFER; + + /* Remove local reference to the method object */ + + acpi_ut_remove_reference(method_obj); + return status; + +error_exit: + + ACPI_FREE(aml_buffer); + ACPI_FREE(method_obj); + return status; +} +ACPI_EXPORT_SYMBOL(acpi_install_method)