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authorBob Moore <robert.moore@intel.com>2018-10-03 21:45:36 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2018-10-04 10:06:27 +0300
commite324e10109fc4fdd3a7d63cbc4114da978dce835 (patch)
treef1663ada0ca4763ac418a931ce7aca8bfb056500 /include/acpi
parentf8553720e103821504f86a2a21ffe4c188d47b2f (diff)
downloadlinux-e324e10109fc4fdd3a7d63cbc4114da978dce835.tar.xz
ACPICA: Update for field unit access
Mostly for access to Generic Serial Bus, but also cleanup for the other fields. Signed-off-by: Bob Moore <robert.moore@intel.com> Signed-off-by: Erik Schmauss <erik.schmauss@intel.com> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'include/acpi')
-rw-r--r--include/acpi/acconfig.h18
1 files changed, 13 insertions, 5 deletions
diff --git a/include/acpi/acconfig.h b/include/acpi/acconfig.h
index 0f875ae68c68..53c088247d36 100644
--- a/include/acpi/acconfig.h
+++ b/include/acpi/acconfig.h
@@ -173,12 +173,20 @@
#define ACPI_RSDP_CHECKSUM_LENGTH 20
#define ACPI_RSDP_XCHECKSUM_LENGTH 36
-/* SMBus, GSBus and IPMI bidirectional buffer size */
+/*
+ * SMBus, GSBus and IPMI buffer sizes. All have a 2-byte header,
+ * containing both Status and Length.
+ */
+#define ACPI_SERIAL_HEADER_SIZE 2 /* Common for below. Status and Length fields */
+
+#define ACPI_SMBUS_DATA_SIZE 32
+#define ACPI_SMBUS_BUFFER_SIZE ACPI_SERIAL_HEADER_SIZE + ACPI_SMBUS_DATA_SIZE
+
+#define ACPI_IPMI_DATA_SIZE 64
+#define ACPI_IPMI_BUFFER_SIZE ACPI_SERIAL_HEADER_SIZE + ACPI_IPMI_DATA_SIZE
-#define ACPI_SMBUS_BUFFER_SIZE 34
-#define ACPI_IPMI_BUFFER_SIZE 66
-#define ACPI_GSBUS_BUFFER_SIZE 34 /* Not clear if this is needed */
-#define ACPI_MAX_GSBUS_BUFFER_SIZE 255 /* Worst-case bidirectional buffer */
+#define ACPI_MAX_GSBUS_DATA_SIZE 255
+#define ACPI_MAX_GSBUS_BUFFER_SIZE ACPI_SERIAL_HEADER_SIZE + ACPI_MAX_GSBUS_DATA_SIZE
/* _sx_d and _sx_w control methods */