>From linux v5.15-rc1.
Signed-off-by: Steffen Trumtrar <s...@pengutronix.de>
---
include/acpi.h | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 72 insertions(+)
diff --git a/include/acpi.h b/include/acpi.h
index b8e73b35df..04f722da23 100644
--- a/include/acpi.h
+++ b/include/acpi.h
@@ -10,6 +10,78 @@
#include <linux/types.h>
#include <driver.h>
+/* Names within the namespace are 4 bytes long */
+
+#define ACPI_NAMESEG_SIZE 4 /* Fixed by ACPI spec */
+#define ACPI_PATH_SEGMENT_LENGTH 5 /* 4 chars for name + 1 char
for separator */
+#define ACPI_PATH_SEPARATOR '.'
+
+/* Sizes for ACPI table headers */
+
+#define ACPI_OEM_ID_SIZE 6
+#define ACPI_OEM_TABLE_ID_SIZE 8
+
+/*
+ * Algorithm to obtain access bit or byte width.
+ * Can be used with access_width of struct acpi_generic_address and
access_size of
+ * struct acpi_resource_generic_register.
+ */
+#define ACPI_ACCESS_BIT_WIDTH(size) (1 << ((size) + 2))
+#define ACPI_ACCESS_BYTE_WIDTH(size) (1 << ((size) - 1))
+
+/* Address Space (Operation Region) Types */
+
+typedef u8 acpi_adr_space_type;
+#define ACPI_ADR_SPACE_SYSTEM_MEMORY (acpi_adr_space_type) 0
+#define ACPI_ADR_SPACE_SYSTEM_IO (acpi_adr_space_type) 1
+#define ACPI_ADR_SPACE_PCI_CONFIG (acpi_adr_space_type) 2
+#define ACPI_ADR_SPACE_EC (acpi_adr_space_type) 3
+#define ACPI_ADR_SPACE_SMBUS (acpi_adr_space_type) 4
+#define ACPI_ADR_SPACE_CMOS (acpi_adr_space_type) 5
+#define ACPI_ADR_SPACE_PCI_BAR_TARGET (acpi_adr_space_type) 6
+#define ACPI_ADR_SPACE_IPMI (acpi_adr_space_type) 7
+#define ACPI_ADR_SPACE_GPIO (acpi_adr_space_type) 8
+#define ACPI_ADR_SPACE_GSBUS (acpi_adr_space_type) 9
+#define ACPI_ADR_SPACE_PLATFORM_COMM (acpi_adr_space_type) 10
+#define ACPI_ADR_SPACE_PLATFORM_RT (acpi_adr_space_type) 11
+
+/*******************************************************************************
+ *
+ * Master ACPI Table Header. This common header is used by all ACPI tables
+ * except the RSDP and FACS.
+ *
+
******************************************************************************/
+
+struct __packed acpi_table_header {
+ char signature[ACPI_NAMESEG_SIZE]; /* ASCII table signature */
+ u32 length; /* Length of table in bytes, including this
header */
+ u8 revision; /* ACPI Specification minor version number */
+ u8 checksum; /* To make sum of entire table == 0 */
+ char oem_id[ACPI_OEM_ID_SIZE]; /* ASCII OEM identification */
+ char oem_table_id[ACPI_OEM_TABLE_ID_SIZE]; /* ASCII OEM table
identification */
+ u32 oem_revision; /* OEM revision number */
+ char asl_compiler_id[ACPI_NAMESEG_SIZE]; /* ASCII ASL compiler
vendor ID */
+ u32 asl_compiler_revision; /* ASL compiler version */
+};
+
+/*******************************************************************************
+ *
+ * GAS - Generic Address Structure (ACPI 2.0+)
+ *
+ * Note: Since this structure is used in the ACPI tables, it is byte aligned.
+ * If misaligned access is not supported by the hardware, accesses to the
+ * 64-bit Address field must be performed with care.
+ *
+
******************************************************************************/
+
+struct __packed acpi_generic_address {
+ u8 space_id; /* Address space where struct or register
exists */
+ u8 bit_width; /* Size in bits of given register */
+ u8 bit_offset; /* Bit offset within the register */
+ u8 access_width; /* Minimum Access size (ACPI 3.0) */
+ u64 address; /* 64-bit address of struct or register */
+};
+
typedef char acpi_sig_t[4];
struct __packed acpi_rsdp { /* root system description pointer */
--
2.30.2
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