[ACPI] ACPICA 20060317

Implemented the use of a cache object for all internal
namespace nodes. Since there are about 1000 static nodes
in a typical system, this will decrease memory use for
cache implementations that minimize per-allocation overhead
(such as a slab allocator.)

Removed the reference count mechanism for internal
namespace nodes, since it was deemed unnecessary. This
reduces the size of each namespace node by about 5%-10%
on all platforms. Nodes are now 20 bytes for the 32-bit
case, and 32 bytes for the 64-bit case.

Optimized several internal data structures to reduce
object size on 64-bit platforms by packing data within
the 64-bit alignment. This includes the frequently used
ACPI_OPERAND_OBJECT, of which there can be ~1000 static
instances corresponding to the namespace objects.

Added two new strings for the predefined _OSI method:
"Windows 2001.1 SP1" and "Windows 2006".

Split the allocation tracking mechanism out to a separate
file, from utalloc.c to uttrack.c. This mechanism appears
to be only useful for application-level code. Kernels may
wish to not include uttrack.c in distributions.

Removed all remnants of the obsolete ACPI_REPORT_* macros
and the associated code. (These macros have been replaced
by the ACPI_ERROR and ACPI_WARNING macros.)

Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 39 insertions, 71 deletions

diff --git a/drivers/acpi/resources/rslist.c b/drivers/acpi/resources/rslist.c
index 6f2d8de39523..50bbb19bf4ae 100644
--- a/drivers/acpi/resources/rslist.c
+++ b/drivers/acpi/resources/rslist.c
@@ -51,92 +51,60 @@ ACPI_MODULE_NAME("rslist")
  *
  * FUNCTION:    acpi_rs_convert_aml_to_resources
  *
- * PARAMETERS:  Aml                 - Pointer to the resource byte stream
- *              aml_length          - Length of Aml
- *              output_buffer       - Pointer to the buffer that will
- *                                    contain the output structures
+ * PARAMETERS:  acpi_walk_aml_callback
+ *              resource_ptr            - Pointer to the buffer that will
+ *                                        contain the output structures
  *
  * RETURN:      Status
  *
- * DESCRIPTION: Takes the resource byte stream and parses it, creating a
- *              linked list of resources in the caller's output buffer
+ * DESCRIPTION: Convert an AML resource to an internal representation of the
+ *              resource that is aligned and easier to access.
  *
  ******************************************************************************/
 acpi_status
-acpi_rs_convert_aml_to_resources(u8 * aml, u32 aml_length, u8 * output_buffer)
+acpi_rs_convert_aml_to_resources(u8 * aml,
+                                 u32 length,
+                                 u32 offset,
+                                 u8 resource_index, void **resource_ptr)
 {
-        struct acpi_resource *resource = (void *)output_buffer;
+        struct acpi_resource *resource = *resource_ptr;
         acpi_status status;
-        u8 resource_index;
-        u8 *end_aml;
 
         ACPI_FUNCTION_TRACE("rs_convert_aml_to_resources");
 
-        end_aml = aml + aml_length;
-
-        /* Loop until end-of-buffer or an end_tag is found */
-
-        while (aml < end_aml) {
-                /*
-                 * Check that the input buffer and all subsequent pointers into it
-                 * are aligned on a native word boundary. Most important on IA64
-                 */
-                if (ACPI_IS_MISALIGNED(resource)) {
-                        ACPI_WARNING((AE_INFO,
-                                      "Misaligned resource pointer %p",
-                                      resource));
-                }
-
-                /* Validate the Resource Type and Resource Length */
-
-                status = acpi_ut_validate_resource(aml, &resource_index);
-                if (ACPI_FAILURE(status)) {
-                        return_ACPI_STATUS(status);
-                }
-
-                /* Convert the AML byte stream resource to a local resource struct */
-
-                status =
-                    acpi_rs_convert_aml_to_resource(resource,
-                                                    ACPI_CAST_PTR(union
-                                                                  aml_resource,
-                                                                  aml),
-                                                    acpi_gbl_get_resource_dispatch
-                                                    [resource_index]);
-                if (ACPI_FAILURE(status)) {
-                        ACPI_EXCEPTION((AE_INFO, status,
-                                        "Could not convert AML resource (Type %X)",
-                                        *aml));
-                        return_ACPI_STATUS(status);
-                }
-
-                ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
-                                  "Type %.2X, Aml %.2X internal %.2X\n",
-                                  acpi_ut_get_resource_type(aml),
-                                  acpi_ut_get_descriptor_length(aml),
-                                  resource->length));
-
-                /* Normal exit on completion of an end_tag resource descriptor */
-
-                if (acpi_ut_get_resource_type(aml) ==
-                    ACPI_RESOURCE_NAME_END_TAG) {
-                        return_ACPI_STATUS(AE_OK);
-                }
-
-                /* Point to the next input AML resource */
-
-                aml += acpi_ut_get_descriptor_length(aml);
-
-                /* Point to the next structure in the output buffer */
+        /*
+         * Check that the input buffer and all subsequent pointers into it
+         * are aligned on a native word boundary. Most important on IA64
+         */
+        if (ACPI_IS_MISALIGNED(resource)) {
+                ACPI_WARNING((AE_INFO,
+                              "Misaligned resource pointer %p", resource));
+        }
 
-                resource =
-                    ACPI_ADD_PTR(struct acpi_resource, resource,
-                                 resource->length);
+        /* Convert the AML byte stream resource to a local resource struct */
+
+        status =
+            acpi_rs_convert_aml_to_resource(resource,
+                                            ACPI_CAST_PTR(union aml_resource,
+                                                          aml),
+                                            acpi_gbl_get_resource_dispatch
+                                            [resource_index]);
+        if (ACPI_FAILURE(status)) {
+                ACPI_EXCEPTION((AE_INFO, status,
+                                "Could not convert AML resource (Type %X)",
+                                *aml));
+                return_ACPI_STATUS(status);
         }
 
-        /* Did not find an end_tag resource descriptor */
+        ACPI_DEBUG_PRINT((ACPI_DB_RESOURCES,
+                          "Type %.2X, aml_length %.2X internal_length %.2X\n",
+                          acpi_ut_get_resource_type(aml), length,
+                          resource->length));
 
-        return_ACPI_STATUS(AE_AML_NO_RESOURCE_END_TAG);
+        /* Point to the next structure in the output buffer */
+
+        *resource_ptr = ACPI_ADD_PTR(void, resource, resource->length);
+        return_ACPI_STATUS(AE_OK);
 }
 
 /*******************************************************************************