ACPICA: Add support for complex _PLD buffers.
_PLD (Physical Location of Device) returns a bit-packed buffer that
is difficult to parse. This change adds a new interface,
AcpiDecodePldBuffer that parses the buffer into a more usable
local struct. Also adds macros to both get and set individual
fields within the packed _PLD buffer. Adds a new include file,
acbuffer.h - which will be expanded to add structs for other
ACPI names that return buffers. ACPICA BZ 954.
Emit (in comments) the decoded contents of a static _PLD buffer
in order to improve comprehension of this bit-packed buffer.
Add multi-endian support to the _PLD decode routine. Deploy the
multi-endian macros to extract data from the _PLD buffer.
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
diff --git a/drivers/acpi/acpica/aclocal.h b/drivers/acpi/acpica/aclocal.h
index 493529a..c816ee6 100644
--- a/drivers/acpi/acpica/aclocal.h
+++ b/drivers/acpi/acpica/aclocal.h
@@ -707,15 +707,18 @@
u8 disasm_opcode; /* Subtype used for disassembly */\
char aml_op_name[16]) /* Op name (debug only) */
-#define ACPI_DASM_BUFFER 0x00
-#define ACPI_DASM_RESOURCE 0x01
-#define ACPI_DASM_STRING 0x02
-#define ACPI_DASM_UNICODE 0x03
-#define ACPI_DASM_EISAID 0x04
-#define ACPI_DASM_MATCHOP 0x05
-#define ACPI_DASM_LNOT_PREFIX 0x06
-#define ACPI_DASM_LNOT_SUFFIX 0x07
-#define ACPI_DASM_IGNORE 0x08
+/* Flags for disasm_flags field above */
+
+#define ACPI_DASM_BUFFER 0x00 /* Buffer is a simple data buffer */
+#define ACPI_DASM_RESOURCE 0x01 /* Buffer is a Resource Descriptor */
+#define ACPI_DASM_STRING 0x02 /* Buffer is a ASCII string */
+#define ACPI_DASM_UNICODE 0x03 /* Buffer is a Unicode string */
+#define ACPI_DASM_PLD_METHOD 0x04 /* Buffer is a _PLD method bit-packed buffer */
+#define ACPI_DASM_EISAID 0x05 /* Integer is an EISAID */
+#define ACPI_DASM_MATCHOP 0x06 /* Parent opcode is a Match() operator */
+#define ACPI_DASM_LNOT_PREFIX 0x07 /* Start of a Lnot_equal (etc.) pair of opcodes */
+#define ACPI_DASM_LNOT_SUFFIX 0x08 /* End of a Lnot_equal (etc.) pair of opcodes */
+#define ACPI_DASM_IGNORE 0x09 /* Not used at this time */
/*
* Generic operation (for example: If, While, Store)
@@ -1025,6 +1028,7 @@
****************************************************************************/
struct acpi_db_method_info {
+ acpi_handle method;
acpi_handle main_thread_gate;
acpi_handle thread_complete_gate;
acpi_thread_id *threads;