[ACPI] ACPICA 20051117

Fixed a problem in the AML parser where the method thread
count could be decremented below zero if any errors
occurred during the method parse phase. This should
eliminate AE_AML_METHOD_LIMIT exceptions seen on some
machines. This also fixed a related regression with the
mechanism that detects and corrects methods that cannot
properly handle reentrancy (related to the deployment of
the new OwnerId mechanism.)

Eliminated the pre-parsing of control methods (to detect
errors) during table load. Related to the problem above,
this was causing unwind issues if any errors occurred
during the parse, and it seemed to be overkill. A table
load should not be aborted if there are problems with
any single control method, thus rendering this feature
rather pointless.

Fixed a problem with the new table-driven resource manager
where an internal buffer overflow could occur for small
resource templates.

Implemented a new external interface, acpi_get_vendor_resource()
This interface will find and return a vendor-defined
resource descriptor within a _CRS or _PRS
method via an ACPI 3.0 UUID match. (from Bjorn Helgaas)

Removed the length limit (200) on string objects as
per the upcoming ACPI 3.0A specification. This affects
the following areas of the interpreter: 1) any implicit
conversion of a Buffer to a String, 2) a String object
result of the ASL Concatentate operator, 3) the String
object result of the ASL ToString operator.

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

1 files changed, 22 insertions, 1 deletions

diff --git a/include/acpi/actypes.h b/include/acpi/actypes.h
index 29b887017b1..11847592ed1 100644
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -326,7 +326,7 @@ typedef u64 acpi_integer;
 /*
  * Constants with special meanings
  */
-#define ACPI_ROOT_OBJECT                (acpi_handle) ACPI_PTR_ADD (char, NULL, ACPI_MAX_PTR)
+#define ACPI_ROOT_OBJECT                ACPI_ADD_PTR (acpi_handle, NULL, ACPI_MAX_PTR)
 
 /*
  * Initialization sequence
@@ -986,6 +986,17 @@ typedef u32 acpi_rsdesc_size;	/* Max Resource Descriptor size is (length+3) = (6
 #pragma pack(1)
 #endif
 
+/* UUID data structures for use in vendor-defined resource descriptors */
+
+struct acpi_uuid {
+	u8 data[ACPI_UUID_LENGTH];
+};
+
+struct acpi_vendor_uuid {
+	u8 subtype;
+	u8 data[ACPI_UUID_LENGTH];
+};
+
 /*
  *  Structures used to describe device resources
  */
@@ -1033,6 +1044,15 @@ struct acpi_resource_vendor {
 	u8 byte_data[1];
 };
 
+/* Vendor resource with UUID info (introduced in ACPI 3.0) */
+
+struct acpi_resource_vendor_typed {
+	u16 byte_length;
+	u8 uuid_subtype;
+	u8 uuid[ACPI_UUID_LENGTH];
+	u8 byte_data[1];
+};
+
 struct acpi_resource_end_tag {
 	u8 checksum;
 };
@@ -1184,6 +1204,7 @@ union acpi_resource_data {
 	struct acpi_resource_io io;
 	struct acpi_resource_fixed_io fixed_io;
 	struct acpi_resource_vendor vendor;
+	struct acpi_resource_vendor_typed vendor_typed;
 	struct acpi_resource_end_tag end_tag;
 	struct acpi_resource_memory24 memory24;
 	struct acpi_resource_memory32 memory32;