]> pilppa.org Git - linux-2.6-omap-h63xx.git/blobdiff - drivers/acpi/resources/rscreate.c
Pull bugzilla-5452 into release branch
[linux-2.6-omap-h63xx.git] / drivers / acpi / resources / rscreate.c
index 0911526b7ad883d1dda18fc1b545c0c3f847c166..008058acdd39cb0143883d9be1e2454a4fb5b3da 100644 (file)
@@ -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
@@ -53,10 +53,10 @@ 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.
@@ -67,35 +67,33 @@ ACPI_MODULE_NAME("rscreate")
  *
  ******************************************************************************/
 acpi_status
-acpi_rs_create_resource_list(union acpi_operand_object *byte_stream_buffer,
+acpi_rs_create_resource_list(union acpi_operand_object *aml_buffer,
                             struct acpi_buffer *output_buffer)
 {
 
        acpi_status status;
-       u8 *byte_stream_start;
+       u8 *aml_start;
        acpi_size list_size_needed = 0;
-       u32 byte_stream_buffer_length;
+       u32 aml_buffer_length;
+       void *resource;
 
-       ACPI_FUNCTION_TRACE("rs_create_resource_list");
+       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",
+       ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Status=%X ListSizeNeeded=%X\n",
                          status, (u32) list_size_needed));
        if (ACPI_FAILURE(status)) {
                return_ACPI_STATUS(status);
@@ -110,15 +108,15 @@ acpi_rs_create_resource_list(union acpi_operand_object *byte_stream_buffer,
 
        /* Do the conversion */
 
-       status =
-           acpi_rs_byte_stream_to_list(byte_stream_start,
-                                       byte_stream_buffer_length,
-                                       output_buffer->pointer);
+       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",
+       ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
                          output_buffer->pointer, (u32) output_buffer->length));
        return_ACPI_STATUS(AE_OK);
 }
@@ -160,7 +158,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
        acpi_status status;
        struct acpi_buffer path_buffer;
 
-       ACPI_FUNCTION_TRACE("rs_create_pci_routing_table");
+       ACPI_FUNCTION_TRACE(rs_create_pci_routing_table);
 
        /* Params already validated, so we don't re-validate here */
 
@@ -172,7 +170,7 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
                return_ACPI_STATUS(status);
        }
 
-       ACPI_DEBUG_PRINT((ACPI_DB_INFO, "buffer_size_needed = %X\n",
+       ACPI_DEBUG_PRINT((ACPI_DB_INFO, "BufferSizeNeeded = %X\n",
                          (u32) buffer_size_needed));
 
        /* Validate/Allocate/Clear caller buffer */
@@ -212,21 +210,20 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
                /* 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)));
+                       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));
+                       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);
                }
 
@@ -243,11 +240,10 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
                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)));
+                       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);
                }
 
@@ -257,82 +253,89 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
                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)));
+                       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 */
-
+               /*
+                * 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[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));
+               if (obj_desc) {
+                       switch (ACPI_GET_OBJECT_TYPE(obj_desc)) {
+                       case ACPI_TYPE_LOCAL_REFERENCE:
+
+                               if (obj_desc->reference.opcode !=
+                                   AML_INT_NAMEPATH_OP) {
+                                       ACPI_ERROR((AE_INFO,
+                                                   "(PRT[%X].Source) Need name, found reference op %X",
+                                                   index,
+                                                   obj_desc->reference.
+                                                   opcode));
+                                       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_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);
                        }
-
-                       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);
                }
 
                /* Now align the current length */
 
                user_prt->length =
-                   (u32) ACPI_ROUND_UP_to_64_bITS(user_prt->length);
+                   (u32) ACPI_ROUND_UP_TO_64BIT(user_prt->length);
 
                /* 4) Fourth subobject: Dereference the PRT.source_index */
 
@@ -340,11 +343,10 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
                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)));
+                       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);
                }
 
@@ -353,14 +355,14 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
                top_object_list++;
        }
 
-       ACPI_DEBUG_PRINT((ACPI_DB_INFO, "output_buffer %p Length %X\n",
+       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
@@ -377,15 +379,15 @@ acpi_rs_create_pci_routing_table(union acpi_operand_object *package_object,
  ******************************************************************************/
 
 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_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",
+       ACPI_DEBUG_PRINT((ACPI_DB_INFO, "LinkedListBuffer = %p\n",
                          linked_list_buffer));
 
        /*
@@ -394,11 +396,10 @@ acpi_rs_create_byte_stream(struct acpi_resource *linked_list_buffer,
         * 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_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);
@@ -406,8 +407,7 @@ acpi_rs_create_byte_stream(struct acpi_resource *linked_list_buffer,
 
        /* Validate/Allocate/Clear caller buffer */
 
-       status =
-           acpi_ut_initialize_buffer(output_buffer, byte_stream_size_needed);
+       status = acpi_ut_initialize_buffer(output_buffer, aml_size_needed);
        if (ACPI_FAILURE(status)) {
                return_ACPI_STATUS(status);
        }
@@ -415,14 +415,14 @@ acpi_rs_create_byte_stream(struct acpi_resource *linked_list_buffer,
        /* Do the conversion */
 
        status =
-           acpi_rs_list_to_byte_stream(linked_list_buffer,
-                                       byte_stream_size_needed,
-                                       output_buffer->pointer);
+           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",
+       ACPI_DEBUG_PRINT((ACPI_DB_INFO, "OutputBuffer %p Length %X\n",
                          output_buffer->pointer, (u32) output_buffer->length));
        return_ACPI_STATUS(AE_OK);
 }