ACPICA: Implement simplified Table Manager

The Table Manager component has been completely
redesigned and reimplemented. The new design is much
simpler, and reduces the overall code and data size of
the kernel-resident ACPICA by approximately 5%. Also,
it is now possible to obtain the ACPI tables very early
during kernel initialization, even before dynamic memory
management is initialized.

Signed-off-by: Alexey Starikovskiy <alexey.y.starikovskiy@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 25 insertions, 14 deletions

diff --git a/include/acpi/aclocal.h b/include/acpi/aclocal.h
index d5421403089..0f12fecba63 100644
--- a/include/acpi/aclocal.h
+++ b/include/acpi/aclocal.h
@@ -51,6 +51,7 @@
 #define ACPI_SERIALIZED                 0xFF
 
 typedef u32 acpi_mutex_handle;
+#define ACPI_GLOBAL_LOCK                (acpi_semaphore) (-1)
 
 /* Total number of aml opcodes defined */
 
@@ -79,8 +80,8 @@ union acpi_parse_object;
  * table below also!
  */
 #define ACPI_MTX_INTERPRETER            0       /* AML Interpreter, main lock */
-#define ACPI_MTX_TABLES                 1       /* Data for ACPI tables */
-#define ACPI_MTX_NAMESPACE              2       /* ACPI Namespace */
+#define ACPI_MTX_NAMESPACE              1       /* ACPI Namespace */
+#define ACPI_MTX_TABLES                 2       /* Data for ACPI tables */
 #define ACPI_MTX_EVENTS                 3       /* Data for ACPI events */
 #define ACPI_MTX_CACHES                 4       /* Internal caches, general purposes */
 #define ACPI_MTX_MEMORY                 5       /* Debug memory tracking lists */
@@ -218,25 +219,35 @@ struct acpi_namespace_node {
  * ACPI Table Descriptor.  One per ACPI table
  */
 struct acpi_table_desc {
-        struct acpi_table_desc *prev;
-        struct acpi_table_desc *next;
-        struct acpi_table_desc *installed_desc;
+        acpi_physical_address address;
         struct acpi_table_header *pointer;
-        u8 *aml_start;
-        u64 physical_address;
-        acpi_size length;
-        u32 aml_length;
+        u32 length;             /* Length fixed at 32 bits */
+        union acpi_name_union signature;
         acpi_owner_id owner_id;
-        u8 type;
-        u8 allocation;
-        u8 loaded_into_namespace;
+        u8 flags;
 };
 
-struct acpi_table_list {
-        struct acpi_table_desc *next;
+struct acpi_internal_rsdt {
+        struct acpi_table_desc *tables;
         u32 count;
+        u32 size;
+        u8 flags;
 };
 
+/* Flags for both structs above */
+
+#define ACPI_TABLE_ORIGIN_UNKNOWN       (0)
+#define ACPI_TABLE_ORIGIN_MAPPED        (1)
+#define ACPI_TABLE_ORIGIN_ALLOCATED     (2)
+#define ACPI_TABLE_ORIGIN_MASK          (3)
+#define ACPI_TABLE_FLAGS_LOADED         (4)
+#define ACPI_TABLE_FLAGS_ALLOW_RESIZE   (8)
+
+/* Predefined (fixed) table indexes */
+
+#define ACPI_TABLE_INDEX_DSDT           (0)
+#define ACPI_TABLE_INDEX_FACS           (1)
+
 struct acpi_find_context {
         char *search_for;
         acpi_handle *list;