X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Facpi%2Fresources%2Frscreate.c;h=08b8d73e6ee56e47b11086cd2812d37237b04ebd;hb=0211a9c8508b2183e0e539509aad60414f1c3813;hp=8e0eae0d50bb58eb71a9cf03890a1e79749038db;hpb=44f6c01242da4e162f28d8e1216a8c7a91174605;p=safe%2Fjmp%2Flinux-2.6 diff --git a/drivers/acpi/resources/rscreate.c b/drivers/acpi/resources/rscreate.c index 8e0eae0..08b8d73 100644 --- a/drivers/acpi/resources/rscreate.c +++ b/drivers/acpi/resources/rscreate.c @@ -5,7 +5,7 @@ ******************************************************************************/ /* - * Copyright (C) 2000 - 2005, R. Byron Moore + * Copyright (C) 2000 - 2008, Intel Corp. * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -41,24 +41,21 @@ * POSSIBILITY OF SUCH DAMAGES. */ - #include #include -#include #include #define _COMPONENT ACPI_RESOURCES - ACPI_MODULE_NAME ("rscreate") - +ACPI_MODULE_NAME("rscreate") /******************************************************************************* * * FUNCTION: acpi_rs_create_resource_list * - * PARAMETERS: byte_stream_buffer - Pointer to the resource byte stream - * output_buffer - Pointer to the user's buffer + * PARAMETERS: aml_buffer - Pointer to the resource byte stream + * output_buffer - Pointer to the user's buffer * - * RETURN: Status - AE_OK if okay, else a valid acpi_status code + * RETURN: Status: AE_OK if okay, else a valid acpi_status code * If output_buffer is not large enough, output_buffer_length * indicates how large output_buffer should be, else it * indicates how may u8 elements of output_buffer are valid. @@ -68,69 +65,66 @@ * of device resources. * ******************************************************************************/ - acpi_status -acpi_rs_create_resource_list ( - union acpi_operand_object *byte_stream_buffer, - struct acpi_buffer *output_buffer) +acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer, + struct acpi_buffer *output_buffer) { - acpi_status status; - u8 *byte_stream_start; - acpi_size list_size_needed = 0; - u32 byte_stream_buffer_length; - - - ACPI_FUNCTION_TRACE ("rs_create_resource_list"); + acpi_status status; + u8 *aml_start; + acpi_size list_size_needed = 0; + u32 aml_buffer_length; + void *resource; + ACPI_FUNCTION_TRACE(rs_create_resource_list); - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "byte_stream_buffer = %p\n", - byte_stream_buffer)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlBuffer = %p\n", aml_buffer)); /* Params already validated, so we don't re-validate here */ - byte_stream_buffer_length = byte_stream_buffer->buffer.length; - byte_stream_start = byte_stream_buffer->buffer.pointer; + aml_buffer_length = aml_buffer->buffer.length; + aml_start = aml_buffer->buffer.pointer; /* - * Pass the byte_stream_buffer into a module that can calculate + * Pass the aml_buffer into a module that can calculate * the buffer size needed for the linked list */ - status = acpi_rs_get_list_length (byte_stream_start, byte_stream_buffer_length, - &list_size_needed); + status = acpi_rs_get_list_length(aml_start, aml_buffer_length, + &list_size_needed); - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "Status=%X list_size_needed=%X\n", - status, (u32) list_size_needed)); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n", + status, (u32) list_size_needed)); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Validate/Allocate/Clear caller buffer */ - status = acpi_ut_initialize_buffer (output_buffer, list_size_needed); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_initialize_buffer(output_buffer, list_size_needed); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Do the conversion */ - status = acpi_rs_byte_stream_to_list (byte_stream_start, byte_stream_buffer_length, - output_buffer->pointer); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + resource = output_buffer->pointer; + status = acpi_ut_walk_aml_resources(aml_start, aml_buffer_length, + acpi_rs_convert_aml_to_resources, + &resource); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "output_buffer %p Length %X\n", - output_buffer->pointer, (u32) output_buffer->length)); - return_ACPI_STATUS (AE_OK); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", + output_buffer->pointer, (u32) output_buffer->length)); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * * FUNCTION: acpi_rs_create_pci_routing_table * - * PARAMETERS: package_object - Pointer to an union acpi_operand_object + * PARAMETERS: package_object - Pointer to a union acpi_operand_object * package * output_buffer - Pointer to the user's buffer * @@ -148,57 +142,57 @@ acpi_rs_create_resource_list ( ******************************************************************************/ acpi_status -acpi_rs_create_pci_routing_table ( - union acpi_operand_object *package_object, - struct acpi_buffer *output_buffer) +acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object, + struct acpi_buffer *output_buffer) { - u8 *buffer; - union acpi_operand_object **top_object_list; - union acpi_operand_object **sub_object_list; - union acpi_operand_object *obj_desc; - acpi_size buffer_size_needed = 0; - u32 number_of_elements; - u32 index; - struct acpi_pci_routing_table *user_prt; - struct acpi_namespace_node *node; - acpi_status status; - struct acpi_buffer path_buffer; - - - ACPI_FUNCTION_TRACE ("rs_create_pci_routing_table"); - + u8 *buffer; + union acpi_operand_object **top_object_list; + union acpi_operand_object **sub_object_list; + union acpi_operand_object *obj_desc; + acpi_size buffer_size_needed = 0; + u32 number_of_elements; + u32 index; + struct acpi_pci_routing_table *user_prt; + struct acpi_namespace_node *node; + acpi_status status; + struct acpi_buffer path_buffer; + + ACPI_FUNCTION_TRACE(rs_create_pci_routing_table); /* Params already validated, so we don't re-validate here */ /* Get the required buffer length */ - status = acpi_rs_get_pci_routing_table_length (package_object, - &buffer_size_needed); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_rs_get_pci_routing_table_length(package_object, + &buffer_size_needed); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "buffer_size_needed = %X\n", - (u32) buffer_size_needed)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "BufferSizeNeeded = %X\n", + (u32) buffer_size_needed)); /* Validate/Allocate/Clear caller buffer */ - status = acpi_ut_initialize_buffer (output_buffer, buffer_size_needed); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_initialize_buffer(output_buffer, buffer_size_needed); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* - * Loop through the ACPI_INTERNAL_OBJECTS - Each object - * should be a package that in turn contains an - * acpi_integer Address, a u8 Pin, a Name and a u8 source_index. + * Loop through the ACPI_INTERNAL_OBJECTS - Each object should be a + * package that in turn contains an acpi_integer Address, a u8 Pin, + * a Name, and a u8 source_index. */ - top_object_list = package_object->package.elements; + top_object_list = package_object->package.elements; number_of_elements = package_object->package.count; - buffer = output_buffer->pointer; - user_prt = ACPI_CAST_PTR (struct acpi_pci_routing_table, buffer); + buffer = output_buffer->pointer; + user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); for (index = 0; index < number_of_elements; index++) { + int source_name_index = 2; + int source_index_index = 3; + /* * Point user_prt past this current structure * @@ -206,31 +200,33 @@ acpi_rs_create_pci_routing_table ( * be zero because we cleared the return buffer earlier */ buffer += user_prt->length; - user_prt = ACPI_CAST_PTR (struct acpi_pci_routing_table, buffer); + user_prt = ACPI_CAST_PTR(struct acpi_pci_routing_table, buffer); /* * Fill in the Length field with the information we have at this point. * The minus four is to subtract the size of the u8 Source[4] member * because it is added below. */ - user_prt->length = (sizeof (struct acpi_pci_routing_table) - 4); + user_prt->length = (sizeof(struct acpi_pci_routing_table) - 4); /* Each element of the top-level package must also be a package */ - if (ACPI_GET_OBJECT_TYPE (*top_object_list) != ACPI_TYPE_PACKAGE) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "(PRT[%X]) Need sub-package, found %s\n", - index, acpi_ut_get_object_type_name (*top_object_list))); - return_ACPI_STATUS (AE_AML_OPERAND_TYPE); + if (ACPI_GET_OBJECT_TYPE(*top_object_list) != ACPI_TYPE_PACKAGE) { + ACPI_ERROR((AE_INFO, + "(PRT[%X]) Need sub-package, found %s", + index, + acpi_ut_get_object_type_name + (*top_object_list))); + return_ACPI_STATUS(AE_AML_OPERAND_TYPE); } /* Each sub-package must be of length 4 */ if ((*top_object_list)->package.count != 4) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "(PRT[%X]) Need package of length 4, found length %d\n", - index, (*top_object_list)->package.count)); - return_ACPI_STATUS (AE_AML_PACKAGE_LIMIT); + ACPI_ERROR((AE_INFO, + "(PRT[%X]) Need package of length 4, found length %d", + index, (*top_object_list)->package.count)); + return_ACPI_STATUS(AE_AML_PACKAGE_LIMIT); } /* @@ -243,121 +239,169 @@ acpi_rs_create_pci_routing_table ( /* 1) First subobject: Dereference the PRT.Address */ obj_desc = sub_object_list[0]; - if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_INTEGER) { - user_prt->address = obj_desc->integer.value; - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "(PRT[%X].Address) Need Integer, found %s\n", - index, acpi_ut_get_object_type_name (obj_desc))); - return_ACPI_STATUS (AE_BAD_DATA); + if (ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_INTEGER) { + ACPI_ERROR((AE_INFO, + "(PRT[%X].Address) Need Integer, found %s", + index, + acpi_ut_get_object_type_name(obj_desc))); + return_ACPI_STATUS(AE_BAD_DATA); } + user_prt->address = obj_desc->integer.value; + /* 2) Second subobject: Dereference the PRT.Pin */ obj_desc = sub_object_list[1]; - if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_INTEGER) { - user_prt->pin = (u32) obj_desc->integer.value; - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "(PRT[%X].Pin) Need Integer, found %s\n", - index, acpi_ut_get_object_type_name (obj_desc))); - return_ACPI_STATUS (AE_BAD_DATA); + if (ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_INTEGER) { + ACPI_ERROR((AE_INFO, + "(PRT[%X].Pin) Need Integer, found %s", + index, + acpi_ut_get_object_type_name(obj_desc))); + return_ACPI_STATUS(AE_BAD_DATA); } - /* 3) Third subobject: Dereference the PRT.source_name */ - - obj_desc = sub_object_list[2]; - switch (ACPI_GET_OBJECT_TYPE (obj_desc)) { - case ACPI_TYPE_LOCAL_REFERENCE: - - if (obj_desc->reference.opcode != AML_INT_NAMEPATH_OP) { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "(PRT[%X].Source) Need name, found reference op %X\n", - index, obj_desc->reference.opcode)); - return_ACPI_STATUS (AE_BAD_DATA); + /* + * If BIOS erroneously reversed the _PRT source_name and source_index, + * then reverse them back. + */ + if (ACPI_GET_OBJECT_TYPE(sub_object_list[3]) != + ACPI_TYPE_INTEGER) { + if (acpi_gbl_enable_interpreter_slack) { + source_name_index = 3; + source_index_index = 2; + printk(KERN_WARNING + "ACPI: Handling Garbled _PRT entry\n"); + } else { + ACPI_ERROR((AE_INFO, + "(PRT[%X].source_index) Need Integer, found %s", + index, + acpi_ut_get_object_type_name + (sub_object_list[3]))); + return_ACPI_STATUS(AE_BAD_DATA); } + } - node = obj_desc->reference.node; + user_prt->pin = (u32) obj_desc->integer.value; - /* Use *remaining* length of the buffer as max for pathname */ + /* + * If the BIOS has erroneously reversed the _PRT source_name (index 2) + * and the source_index (index 3), fix it. _PRT is important enough to + * workaround this BIOS error. This also provides compatibility with + * other ACPI implementations. + */ + obj_desc = sub_object_list[3]; + if (!obj_desc + || (ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_INTEGER)) { + sub_object_list[3] = sub_object_list[2]; + sub_object_list[2] = obj_desc; + + ACPI_WARNING((AE_INFO, + "(PRT[%X].Source) SourceName and SourceIndex are reversed, fixed", + index)); + } - path_buffer.length = output_buffer->length - - (u32) ((u8 *) user_prt->source - + /* + * 3) Third subobject: Dereference the PRT.source_name + * The name may be unresolved (slack mode), so allow a null object + */ + obj_desc = sub_object_list[source_name_index]; + if (obj_desc) { + switch (ACPI_GET_OBJECT_TYPE(obj_desc)) { + case ACPI_TYPE_LOCAL_REFERENCE: + + if (obj_desc->reference.class != + ACPI_REFCLASS_NAME) { + ACPI_ERROR((AE_INFO, + "(PRT[%X].Source) Need name, found Reference Class %X", + index, + obj_desc->reference.class)); + return_ACPI_STATUS(AE_BAD_DATA); + } + + node = obj_desc->reference.node; + + /* Use *remaining* length of the buffer as max for pathname */ + + path_buffer.length = output_buffer->length - + (u32) ((u8 *) user_prt->source - (u8 *) output_buffer->pointer); - path_buffer.pointer = user_prt->source; - - status = acpi_ns_handle_to_pathname ((acpi_handle) node, &path_buffer); - - /* +1 to include null terminator */ - - user_prt->length += (u32) ACPI_STRLEN (user_prt->source) + 1; - break; - - - case ACPI_TYPE_STRING: - - ACPI_STRCPY (user_prt->source, obj_desc->string.pointer); - - /* - * Add to the Length field the length of the string - * (add 1 for terminator) - */ - user_prt->length += obj_desc->string.length + 1; - break; - - - case ACPI_TYPE_INTEGER: - /* - * If this is a number, then the Source Name is NULL, since the - * entire buffer was zeroed out, we can leave this alone. - * - * Add to the Length field the length of the u32 NULL - */ - user_prt->length += sizeof (u32); - break; - - - default: - - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "(PRT[%X].Source) Need Ref/String/Integer, found %s\n", - index, acpi_ut_get_object_type_name (obj_desc))); - return_ACPI_STATUS (AE_BAD_DATA); + path_buffer.pointer = user_prt->source; + + status = + acpi_ns_handle_to_pathname((acpi_handle) + node, + &path_buffer); + + /* +1 to include null terminator */ + + user_prt->length += + (u32) ACPI_STRLEN(user_prt->source) + 1; + break; + + case ACPI_TYPE_STRING: + + ACPI_STRCPY(user_prt->source, + obj_desc->string.pointer); + + /* + * Add to the Length field the length of the string + * (add 1 for terminator) + */ + user_prt->length += obj_desc->string.length + 1; + break; + + case ACPI_TYPE_INTEGER: + /* + * If this is a number, then the Source Name is NULL, since the + * entire buffer was zeroed out, we can leave this alone. + * + * Add to the Length field the length of the u32 NULL + */ + user_prt->length += sizeof(u32); + break; + + default: + + ACPI_ERROR((AE_INFO, + "(PRT[%X].Source) Need Ref/String/Integer, found %s", + index, + acpi_ut_get_object_type_name + (obj_desc))); + return_ACPI_STATUS(AE_BAD_DATA); + } } /* Now align the current length */ - user_prt->length = (u32) ACPI_ROUND_UP_to_64_bITS (user_prt->length); + user_prt->length = + (u32) ACPI_ROUND_UP_TO_64BIT(user_prt->length); /* 4) Fourth subobject: Dereference the PRT.source_index */ - obj_desc = sub_object_list[3]; - if (ACPI_GET_OBJECT_TYPE (obj_desc) == ACPI_TYPE_INTEGER) { - user_prt->source_index = (u32) obj_desc->integer.value; - } - else { - ACPI_DEBUG_PRINT ((ACPI_DB_ERROR, - "(PRT[%X].source_index) Need Integer, found %s\n", - index, acpi_ut_get_object_type_name (obj_desc))); - return_ACPI_STATUS (AE_BAD_DATA); + obj_desc = sub_object_list[source_index_index]; + if (ACPI_GET_OBJECT_TYPE(obj_desc) != ACPI_TYPE_INTEGER) { + ACPI_ERROR((AE_INFO, + "(PRT[%X].SourceIndex) Need Integer, found %s", + index, + acpi_ut_get_object_type_name(obj_desc))); + return_ACPI_STATUS(AE_BAD_DATA); } + user_prt->source_index = (u32) obj_desc->integer.value; + /* Point to the next union acpi_operand_object in the top level package */ top_object_list++; } - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "output_buffer %p Length %X\n", - output_buffer->pointer, (u32) output_buffer->length)); - return_ACPI_STATUS (AE_OK); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", + output_buffer->pointer, (u32) output_buffer->length)); + return_ACPI_STATUS(AE_OK); } - /******************************************************************************* * - * FUNCTION: acpi_rs_create_byte_stream + * FUNCTION: acpi_rs_create_aml_resources * * PARAMETERS: linked_list_buffer - Pointer to the resource linked list * output_buffer - Pointer to the user's buffer @@ -374,19 +418,16 @@ acpi_rs_create_pci_routing_table ( ******************************************************************************/ acpi_status -acpi_rs_create_byte_stream ( - struct acpi_resource *linked_list_buffer, - struct acpi_buffer *output_buffer) +acpi_rs_create_aml_resources(struct acpi_resource *linked_list_buffer, + struct acpi_buffer *output_buffer) { - acpi_status status; - acpi_size byte_stream_size_needed = 0; - + acpi_status status; + acpi_size aml_size_needed = 0; - ACPI_FUNCTION_TRACE ("rs_create_byte_stream"); + ACPI_FUNCTION_TRACE(rs_create_aml_resources); - - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "linked_list_buffer = %p\n", - linked_list_buffer)); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "LinkedListBuffer = %p\n", + linked_list_buffer)); /* * Params already validated, so we don't re-validate here @@ -394,32 +435,33 @@ acpi_rs_create_byte_stream ( * Pass the linked_list_buffer into a module that calculates * the buffer size needed for the byte stream. */ - status = acpi_rs_get_byte_stream_length (linked_list_buffer, - &byte_stream_size_needed); + status = acpi_rs_get_aml_length(linked_list_buffer, &aml_size_needed); - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "byte_stream_size_needed=%X, %s\n", - (u32) byte_stream_size_needed, acpi_format_exception (status))); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "AmlSizeNeeded=%X, %s\n", + (u32) aml_size_needed, + acpi_format_exception(status))); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Validate/Allocate/Clear caller buffer */ - status = acpi_ut_initialize_buffer (output_buffer, byte_stream_size_needed); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = acpi_ut_initialize_buffer(output_buffer, aml_size_needed); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } /* Do the conversion */ - status = acpi_rs_list_to_byte_stream (linked_list_buffer, byte_stream_size_needed, - output_buffer->pointer); - if (ACPI_FAILURE (status)) { - return_ACPI_STATUS (status); + status = + acpi_rs_convert_resources_to_aml(linked_list_buffer, + aml_size_needed, + output_buffer->pointer); + if (ACPI_FAILURE(status)) { + return_ACPI_STATUS(status); } - ACPI_DEBUG_PRINT ((ACPI_DB_INFO, "output_buffer %p Length %X\n", - output_buffer->pointer, (u32) output_buffer->length)); - return_ACPI_STATUS (AE_OK); + ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n", + output_buffer->pointer, (u32) output_buffer->length)); + return_ACPI_STATUS(AE_OK); } -