X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=drivers%2Facpi%2Fresources%2Frsxface.c;h=88b67077aeeb12cf1a1cd1f85db6be9daaef0526;hb=43bc926fffd92024b46cafaf7350d669ba9ca884;hp=a9cdcbeb3432c3fd06b15e8da3fe7034bbdf1a34;hpb=cee37fe97739d85991964371c1f3a745c00dd236;p=linux-2.6.git diff --git a/drivers/acpi/resources/rsxface.c b/drivers/acpi/resources/rsxface.c index a9cdcbeb3..88b67077a 100644 --- a/drivers/acpi/resources/rsxface.c +++ b/drivers/acpi/resources/rsxface.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2005, R. Byron Moore + * Copyright (C) 2000 - 2006, R. Byron Moore * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -47,8 +47,26 @@ #include #define _COMPONENT ACPI_RESOURCES - ACPI_MODULE_NAME ("rsxface") +ACPI_MODULE_NAME("rsxface") +/* Local macros for 16,32-bit to 64-bit conversion */ +#define ACPI_COPY_FIELD(out, in, field) ((out)->field = (in)->field) +#define ACPI_COPY_ADDRESS(out, in) \ + ACPI_COPY_FIELD(out, in, resource_type); \ + ACPI_COPY_FIELD(out, in, producer_consumer); \ + ACPI_COPY_FIELD(out, in, decode); \ + ACPI_COPY_FIELD(out, in, min_address_fixed); \ + ACPI_COPY_FIELD(out, in, max_address_fixed); \ + ACPI_COPY_FIELD(out, in, info); \ + ACPI_COPY_FIELD(out, in, granularity); \ + ACPI_COPY_FIELD(out, in, minimum); \ + ACPI_COPY_FIELD(out, in, maximum); \ + ACPI_COPY_FIELD(out, in, translation_offset); \ + ACPI_COPY_FIELD(out, in, address_length); \ + ACPI_COPY_FIELD(out, in, resource_source); +/* Local prototypes */ +static acpi_status +acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context); /******************************************************************************* * @@ -74,15 +92,12 @@ ******************************************************************************/ acpi_status -acpi_get_irq_routing_table ( - acpi_handle device_handle, - struct acpi_buffer *ret_buffer) +acpi_get_irq_routing_table(acpi_handle device_handle, + struct acpi_buffer *ret_buffer) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_get_irq_routing_table "); + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_get_irq_routing_table "); /* * Must have a valid handle and buffer, So we have to have a handle @@ -91,19 +106,18 @@ acpi_get_irq_routing_table ( * we'll be returning the needed buffer size, so keep going. */ if (!device_handle) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_validate_buffer (ret_buffer); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_validate_buffer(ret_buffer); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - status = acpi_rs_get_prt_method_data (device_handle, ret_buffer); - return_ACPI_STATUS (status); + status = acpi_rs_get_prt_method_data(device_handle, ret_buffer); + return_ACPI_STATUS(status); } - /******************************************************************************* * * FUNCTION: acpi_get_current_resources @@ -129,15 +143,12 @@ acpi_get_irq_routing_table ( ******************************************************************************/ acpi_status -acpi_get_current_resources ( - acpi_handle device_handle, - struct acpi_buffer *ret_buffer) +acpi_get_current_resources(acpi_handle device_handle, + struct acpi_buffer *ret_buffer) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_get_current_resources"); + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_get_current_resources"); /* * Must have a valid handle and buffer, So we have to have a handle @@ -146,19 +157,19 @@ acpi_get_current_resources ( * we'll be returning the needed buffer size, so keep going. */ if (!device_handle) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_validate_buffer (ret_buffer); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_validate_buffer(ret_buffer); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - status = acpi_rs_get_crs_method_data (device_handle, ret_buffer); - return_ACPI_STATUS (status); + status = acpi_rs_get_crs_method_data(device_handle, ret_buffer); + return_ACPI_STATUS(status); } -EXPORT_SYMBOL(acpi_get_current_resources); +EXPORT_SYMBOL(acpi_get_current_resources); /******************************************************************************* * @@ -180,17 +191,15 @@ EXPORT_SYMBOL(acpi_get_current_resources); * and the value of ret_buffer is undefined. * ******************************************************************************/ + #ifdef ACPI_FUTURE_USAGE acpi_status -acpi_get_possible_resources ( - acpi_handle device_handle, - struct acpi_buffer *ret_buffer) +acpi_get_possible_resources(acpi_handle device_handle, + struct acpi_buffer *ret_buffer) { - acpi_status status; - - - ACPI_FUNCTION_TRACE ("acpi_get_possible_resources"); + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_get_possible_resources"); /* * Must have a valid handle and buffer, So we have to have a handle @@ -199,31 +208,31 @@ acpi_get_possible_resources ( * we'll be returning the needed buffer size, so keep going. */ if (!device_handle) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_ut_validate_buffer (ret_buffer); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_validate_buffer(ret_buffer); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - status = acpi_rs_get_prs_method_data (device_handle, ret_buffer); - return_ACPI_STATUS (status); + status = acpi_rs_get_prs_method_data(device_handle, ret_buffer); + return_ACPI_STATUS(status); } -EXPORT_SYMBOL(acpi_get_possible_resources); -#endif /* ACPI_FUTURE_USAGE */ +EXPORT_SYMBOL(acpi_get_possible_resources); +#endif /* ACPI_FUTURE_USAGE */ /******************************************************************************* * * FUNCTION: acpi_walk_resources * - * PARAMETERS: device_handle - a handle to the device object for the + * PARAMETERS: device_handle - Handle to the device object for the * device we are querying - * Path - method name of the resources we want + * Name - Method name of the resources we want * (METHOD_NAME__CRS or METHOD_NAME__PRS) - * user_function - called for each resource - * Context - passed to user_function + * user_function - Called for each resource + * Context - Passed to user_function * * RETURN: Status * @@ -234,88 +243,79 @@ EXPORT_SYMBOL(acpi_get_possible_resources); ******************************************************************************/ acpi_status -acpi_walk_resources ( - acpi_handle device_handle, - char *path, - ACPI_WALK_RESOURCE_CALLBACK user_function, - void *context) +acpi_walk_resources(acpi_handle device_handle, + char *name, + ACPI_WALK_RESOURCE_CALLBACK user_function, void *context) { - acpi_status status; - struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL}; - struct acpi_resource *resource; - struct acpi_resource *buffer_end; + acpi_status status; + struct acpi_buffer buffer; + struct acpi_resource *resource; + struct acpi_resource *resource_end; + ACPI_FUNCTION_TRACE("acpi_walk_resources"); - ACPI_FUNCTION_TRACE ("acpi_walk_resources"); + /* Parameter validation */ - - if (!device_handle || - (ACPI_STRNCMP (path, METHOD_NAME__CRS, sizeof (METHOD_NAME__CRS)) && - ACPI_STRNCMP (path, METHOD_NAME__PRS, sizeof (METHOD_NAME__PRS)))) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if (!device_handle || !user_function || !name || + (ACPI_STRNCMP(name, METHOD_NAME__CRS, sizeof(METHOD_NAME__CRS)) && + ACPI_STRNCMP(name, METHOD_NAME__PRS, sizeof(METHOD_NAME__PRS)))) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_rs_get_method_data (device_handle, path, &buffer); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + /* Get the _CRS or _PRS resource list */ + + buffer.length = ACPI_ALLOCATE_LOCAL_BUFFER; + status = acpi_rs_get_method_data(device_handle, name, &buffer); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - /* Setup pointers */ + /* Buffer now contains the resource list */ - resource = (struct acpi_resource *) buffer.pointer; - buffer_end = ACPI_CAST_PTR (struct acpi_resource, - ((u8 *) buffer.pointer + buffer.length)); + resource = ACPI_CAST_PTR(struct acpi_resource, buffer.pointer); + resource_end = + ACPI_ADD_PTR(struct acpi_resource, buffer.pointer, buffer.length); - /* Walk the resource list */ + /* Walk the resource list until the end_tag is found (or buffer end) */ - for (;;) { - if (!resource || resource->id == ACPI_RSTYPE_END_TAG) { + while (resource < resource_end) { + /* Sanity check the resource */ + + if (resource->type > ACPI_RESOURCE_TYPE_MAX) { + status = AE_AML_INVALID_RESOURCE_TYPE; break; } - status = user_function (resource, context); - - switch (status) { - case AE_OK: - case AE_CTRL_DEPTH: + /* Invoke the user function, abort on any error returned */ - /* Just keep going */ + status = user_function(resource, context); + if (ACPI_FAILURE(status)) { + if (status == AE_CTRL_TERMINATE) { + /* This is an OK termination by the user function */ - status = AE_OK; + status = AE_OK; + } break; + } - case AE_CTRL_TERMINATE: - - /* Exit now, with OK stats */ - - status = AE_OK; - goto cleanup; - - default: - - /* All others are valid exceptions */ + /* end_tag indicates end-of-list */ - goto cleanup; + if (resource->type == ACPI_RESOURCE_TYPE_END_TAG) { + break; } /* Get the next resource descriptor */ - resource = ACPI_NEXT_RESOURCE (resource); - - /* Check for end-of-buffer */ - - if (resource >= buffer_end) { - goto cleanup; - } + resource = + ACPI_ADD_PTR(struct acpi_resource, resource, + resource->length); } -cleanup: - - acpi_os_free (buffer.pointer); - return_ACPI_STATUS (status); + ACPI_MEM_FREE(buffer.pointer); + return_ACPI_STATUS(status); } -EXPORT_SYMBOL(acpi_walk_resources); +EXPORT_SYMBOL(acpi_walk_resources); /******************************************************************************* * @@ -336,53 +336,32 @@ EXPORT_SYMBOL(acpi_walk_resources); ******************************************************************************/ acpi_status -acpi_set_current_resources ( - acpi_handle device_handle, - struct acpi_buffer *in_buffer) +acpi_set_current_resources(acpi_handle device_handle, + struct acpi_buffer *in_buffer) { - acpi_status status; + acpi_status status; + ACPI_FUNCTION_TRACE("acpi_set_current_resources"); - ACPI_FUNCTION_TRACE ("acpi_set_current_resources"); + /* Must have a valid handle and buffer */ - - /* - * Must have a valid handle and buffer - */ - if ((!device_handle) || - (!in_buffer) || - (!in_buffer->pointer) || - (!in_buffer->length)) { - return_ACPI_STATUS (AE_BAD_PARAMETER); + if ((!device_handle) || + (!in_buffer) || (!in_buffer->pointer) || (!in_buffer->length)) { + return_ACPI_STATUS(AE_BAD_PARAMETER); } - status = acpi_rs_set_srs_method_data (device_handle, in_buffer); - return_ACPI_STATUS (status); + status = acpi_rs_set_srs_method_data(device_handle, in_buffer); + return_ACPI_STATUS(status); } -EXPORT_SYMBOL(acpi_set_current_resources); - -#define ACPI_COPY_FIELD(out, in, field) ((out)->field = (in)->field) -#define ACPI_COPY_ADDRESS(out, in) \ - ACPI_COPY_FIELD(out, in, resource_type); \ - ACPI_COPY_FIELD(out, in, producer_consumer); \ - ACPI_COPY_FIELD(out, in, decode); \ - ACPI_COPY_FIELD(out, in, min_address_fixed); \ - ACPI_COPY_FIELD(out, in, max_address_fixed); \ - ACPI_COPY_FIELD(out, in, attribute); \ - ACPI_COPY_FIELD(out, in, granularity); \ - ACPI_COPY_FIELD(out, in, min_address_range); \ - ACPI_COPY_FIELD(out, in, max_address_range); \ - ACPI_COPY_FIELD(out, in, address_translation_offset); \ - ACPI_COPY_FIELD(out, in, address_length); \ - ACPI_COPY_FIELD(out, in, resource_source); +EXPORT_SYMBOL(acpi_set_current_resources); /****************************************************************************** * * FUNCTION: acpi_resource_to_address64 * - * PARAMETERS: resource - Pointer to a resource - * out - Pointer to the users's return + * PARAMETERS: Resource - Pointer to a resource + * Out - Pointer to the users's return * buffer (a struct * struct acpi_resource_address64) * @@ -396,42 +375,154 @@ EXPORT_SYMBOL(acpi_set_current_resources); ******************************************************************************/ acpi_status -acpi_resource_to_address64 ( - struct acpi_resource *resource, - struct acpi_resource_address64 *out) +acpi_resource_to_address64(struct acpi_resource *resource, + struct acpi_resource_address64 *out) { - struct acpi_resource_address16 *address16; - struct acpi_resource_address32 *address32; + struct acpi_resource_address16 *address16; + struct acpi_resource_address32 *address32; + if (!resource || !out) { + return (AE_BAD_PARAMETER); + } - switch (resource->id) { - case ACPI_RSTYPE_ADDRESS16: + /* Convert 16 or 32 address descriptor to 64 */ - address16 = (struct acpi_resource_address16 *) &resource->data; + switch (resource->type) { + case ACPI_RESOURCE_TYPE_ADDRESS16: + + address16 = (struct acpi_resource_address16 *)&resource->data; ACPI_COPY_ADDRESS(out, address16); break; + case ACPI_RESOURCE_TYPE_ADDRESS32: - case ACPI_RSTYPE_ADDRESS32: - - address32 = (struct acpi_resource_address32 *) &resource->data; + address32 = (struct acpi_resource_address32 *)&resource->data; ACPI_COPY_ADDRESS(out, address32); break; - - case ACPI_RSTYPE_ADDRESS64: + case ACPI_RESOURCE_TYPE_ADDRESS64: /* Simple copy for 64 bit source */ - ACPI_MEMCPY (out, &resource->data, sizeof (struct acpi_resource_address64)); + ACPI_MEMCPY(out, &resource->data, + sizeof(struct acpi_resource_address64)); break; - default: return (AE_BAD_PARAMETER); } return (AE_OK); } + EXPORT_SYMBOL(acpi_resource_to_address64); +/******************************************************************************* + * + * FUNCTION: acpi_get_vendor_resource + * + * PARAMETERS: device_handle - Handle for the parent device object + * Name - Method name for the parent resource + * (METHOD_NAME__CRS or METHOD_NAME__PRS) + * Uuid - Pointer to the UUID to be matched. + * includes both subtype and 16-byte UUID + * ret_buffer - Where the vendor resource is returned + * + * RETURN: Status + * + * DESCRIPTION: Walk a resource template for the specified evice to find a + * vendor-defined resource that matches the supplied UUID and + * UUID subtype. Returns a struct acpi_resource of type Vendor. + * + ******************************************************************************/ + +acpi_status +acpi_get_vendor_resource(acpi_handle device_handle, + char *name, + struct acpi_vendor_uuid * uuid, + struct acpi_buffer * ret_buffer) +{ + struct acpi_vendor_walk_info info; + acpi_status status; + + /* Other parameters are validated by acpi_walk_resources */ + + if (!uuid || !ret_buffer) { + return (AE_BAD_PARAMETER); + } + + info.uuid = uuid; + info.buffer = ret_buffer; + info.status = AE_NOT_EXIST; + + /* Walk the _CRS or _PRS resource list for this device */ + + status = + acpi_walk_resources(device_handle, name, + acpi_rs_match_vendor_resource, &info); + if (ACPI_FAILURE(status)) { + return (status); + } + + return (info.status); +} + +/******************************************************************************* + * + * FUNCTION: acpi_rs_match_vendor_resource + * + * PARAMETERS: ACPI_WALK_RESOURCE_CALLBACK + * + * RETURN: Status + * + * DESCRIPTION: Match a vendor resource via the ACPI 3.0 UUID + * + ******************************************************************************/ + +static acpi_status +acpi_rs_match_vendor_resource(struct acpi_resource *resource, void *context) +{ + struct acpi_vendor_walk_info *info = context; + struct acpi_resource_vendor_typed *vendor; + struct acpi_buffer *buffer; + acpi_status status; + + /* Ignore all descriptors except Vendor */ + + if (resource->type != ACPI_RESOURCE_TYPE_VENDOR) { + return (AE_OK); + } + + vendor = &resource->data.vendor_typed; + + /* + * For a valid match, these conditions must hold: + * + * 1) Length of descriptor data must be at least as long as a UUID struct + * 2) The UUID subtypes must match + * 3) The UUID data must match + */ + if ((vendor->byte_length < (ACPI_UUID_LENGTH + 1)) || + (vendor->uuid_subtype != info->uuid->subtype) || + (ACPI_MEMCMP(vendor->uuid, info->uuid->data, ACPI_UUID_LENGTH))) { + return (AE_OK); + } + + /* Validate/Allocate/Clear caller buffer */ + + buffer = info->buffer; + status = acpi_ut_initialize_buffer(buffer, resource->length); + if (ACPI_FAILURE(status)) { + return (status); + } + + /* Found the correct resource, copy and return it */ + + ACPI_MEMCPY(buffer->pointer, resource, resource->length); + buffer->length = resource->length; + + /* Found the desired descriptor, terminate resource walk */ + + info->status = AE_OK; + return (AE_CTRL_TERMINATE); +}