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-rw-r--r--include/acpi/actbl.h58
1 files changed, 32 insertions, 26 deletions
diff --git a/include/acpi/actbl.h b/include/acpi/actbl.h
index b5cdcca444c8..c1e9110c3661 100644
--- a/include/acpi/actbl.h
+++ b/include/acpi/actbl.h
@@ -86,15 +86,15 @@
*/
struct rsdp_descriptor /* Root System Descriptor Pointer */
{
- char signature [8]; /* ACPI signature, contains "RSD PTR " */
- u8 checksum; /* To make sum of struct == 0 */
- char oem_id [6]; /* OEM identification */
- u8 revision; /* Must be 0 for 1.0, 2 for 2.0 */
- u32 rsdt_physical_address; /* 32-bit physical address of RSDT */
- u32 length; /* XSDT Length in bytes including hdr */
- u64 xsdt_physical_address; /* 64-bit physical address of XSDT */
- u8 extended_checksum; /* Checksum of entire table */
- char reserved [3]; /* Reserved field must be 0 */
+ char signature[8]; /* ACPI signature, contains "RSD PTR " */
+ u8 checksum; /* ACPI 1.0 checksum */
+ char oem_id[6]; /* OEM identification */
+ u8 revision; /* Must be (0) for ACPI 1.0 or (2) for ACPI 2.0+ */
+ u32 rsdt_physical_address; /* 32-bit physical address of the RSDT */
+ u32 length; /* XSDT Length in bytes, including header */
+ u64 xsdt_physical_address; /* 64-bit physical address of the XSDT */
+ u8 extended_checksum; /* Checksum of entire table (ACPI 2.0) */
+ char reserved[3]; /* Reserved, must be zero */
};
@@ -107,15 +107,15 @@ struct acpi_common_facs /* Common FACS for internal use */
#define ACPI_TABLE_HEADER_DEF /* ACPI common table header */ \
- char signature [4]; /* ACPI signature (4 ASCII characters) */\
- u32 length; /* Length of table, in bytes, including header */\
+ char signature[4]; /* ASCII table signature */\
+ u32 length; /* Length of table in bytes, including this header */\
u8 revision; /* ACPI Specification minor version # */\
u8 checksum; /* To make sum of entire table == 0 */\
- char oem_id [6]; /* OEM identification */\
- char oem_table_id [8]; /* OEM table identification */\
+ char oem_id[6]; /* ASCII OEM identification */\
+ char oem_table_id[8]; /* ASCII OEM table identification */\
u32 oem_revision; /* OEM revision number */\
- char asl_compiler_id [4]; /* ASL compiler vendor ID */\
- u32 asl_compiler_revision; /* ASL compiler revision number */
+ char asl_compiler_id [4]; /* ASCII ASL compiler vendor ID */\
+ u32 asl_compiler_revision; /* ASL compiler version */
struct acpi_table_header /* ACPI common table header */
@@ -139,8 +139,12 @@ struct multiple_apic_table
{
ACPI_TABLE_HEADER_DEF /* ACPI common table header */
u32 local_apic_address; /* Physical address of local APIC */
- u32 PCATcompat : 1; /* A one indicates system also has dual 8259s */
- u32 reserved1 : 31;
+
+ /* Flags (32 bits) */
+
+ u8 PCATcompat : 1; /* 00: System also has dual 8259s */
+ u8 : 7; /* 01-07: Reserved, must be zero */
+ u8 reserved1[3]; /* 08-31: Reserved, must be zero */
};
/* Values for Type in APIC_HEADER_DEF */
@@ -180,16 +184,18 @@ struct apic_header
#define TRIGGER_RESERVED 2
#define TRIGGER_LEVEL 3
-/* Common flag definitions */
+/* Common flag definitions (16 bits each) */
#define MPS_INTI_FLAGS \
- u16 polarity : 2; /* Polarity of APIC I/O input signals */\
- u16 trigger_mode : 2; /* Trigger mode of APIC input signals */\
- u16 reserved1 : 12; /* Reserved, must be zero */
+ u8 polarity : 2; /* 00-01: Polarity of APIC I/O input signals */\
+ u8 trigger_mode : 2; /* 02-03: Trigger mode of APIC input signals */\
+ u8 : 4; /* 04-07: Reserved, must be zero */\
+ u8 reserved1; /* 08-15: Reserved, must be zero */
#define LOCAL_APIC_FLAGS \
- u32 processor_enabled: 1; /* Processor is usable if set */\
- u32 reserved2 : 31; /* Reserved, must be zero */
+ u8 processor_enabled: 1; /* 00: Processor is usable if set */\
+ u8 : 7; /* 01-07: Reserved, must be zero */\
+ u8 reserved2; /* 08-15: Reserved, must be zero */
/* Sub-structures for MADT */
@@ -238,7 +244,7 @@ struct madt_local_apic_nmi
struct madt_address_override
{
APIC_HEADER_DEF
- u16 reserved; /* Reserved - must be zero */
+ u16 reserved; /* Reserved, must be zero */
u64 address; /* APIC physical address */
};
@@ -246,7 +252,7 @@ struct madt_io_sapic
{
APIC_HEADER_DEF
u8 io_sapic_id; /* I/O SAPIC ID */
- u8 reserved; /* Reserved - must be zero */
+ u8 reserved; /* Reserved, must be zero */
u32 interrupt_base; /* Glocal interrupt for SAPIC start */
u64 address; /* SAPIC physical address */
};
@@ -257,7 +263,7 @@ struct madt_local_sapic
u8 processor_id; /* ACPI processor id */
u8 local_sapic_id; /* SAPIC ID */
u8 local_sapic_eid; /* SAPIC EID */
- u8 reserved [3]; /* Reserved - must be zero */
+ u8 reserved[3]; /* Reserved, must be zero */
LOCAL_APIC_FLAGS
u32 processor_uID; /* Numeric UID - ACPI 3.0 */
char processor_uIDstring[1]; /* String UID - ACPI 3.0 */