diff options
Diffstat (limited to 'source/components/executer/exfield.c')
| -rw-r--r-- | source/components/executer/exfield.c | 103 |
1 files changed, 99 insertions, 4 deletions
diff --git a/source/components/executer/exfield.c b/source/components/executer/exfield.c index aedc8d9fae96..a1de0ca237c7 100644 --- a/source/components/executer/exfield.c +++ b/source/components/executer/exfield.c @@ -48,11 +48,80 @@ #include "accommon.h" #include "acdispat.h" #include "acinterp.h" +#include "amlcode.h" #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("exfield") +/* Local prototypes */ + +static UINT32 +AcpiExGetSerialAccessLength ( + UINT32 AccessorType, + UINT32 AccessLength); + + +/******************************************************************************* + * + * FUNCTION: AcpiExGetSerialAccessLength + * + * PARAMETERS: AccessorType - The type of the protocol indicated by region + * field access attributes + * AccessLength - The access length of the region field + * + * RETURN: Decoded access length + * + * DESCRIPTION: This routine returns the length of the GenericSerialBus + * protocol bytes + * + ******************************************************************************/ + +static UINT32 +AcpiExGetSerialAccessLength ( + UINT32 AccessorType, + UINT32 AccessLength) +{ + UINT32 Length; + + + switch (AccessorType) + { + case AML_FIELD_ATTRIB_QUICK: + + Length = 0; + break; + + case AML_FIELD_ATTRIB_SEND_RCV: + case AML_FIELD_ATTRIB_BYTE: + + Length = 1; + break; + + case AML_FIELD_ATTRIB_WORD: + case AML_FIELD_ATTRIB_WORD_CALL: + + Length = 2; + break; + + case AML_FIELD_ATTRIB_MULTIBYTE: + case AML_FIELD_ATTRIB_RAW_BYTES: + case AML_FIELD_ATTRIB_RAW_PROCESS: + + Length = AccessLength; + break; + + case AML_FIELD_ATTRIB_BLOCK: + case AML_FIELD_ATTRIB_BLOCK_CALL: + default: + + Length = ACPI_GSBUS_BUFFER_SIZE - 2; + break; + } + + return (Length); +} + /******************************************************************************* * @@ -80,6 +149,7 @@ AcpiExReadDataFromField ( ACPI_SIZE Length; void *Buffer; UINT32 Function; + UINT16 AccessorType; ACPI_FUNCTION_TRACE_PTR (ExReadDataFromField, ObjDesc); @@ -129,8 +199,20 @@ AcpiExReadDataFromField ( } else if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS) { - Length = ACPI_GSBUS_BUFFER_SIZE; - Function = ACPI_READ | (ObjDesc->Field.Attribute << 16); + AccessorType = ObjDesc->Field.Attribute; + Length = AcpiExGetSerialAccessLength (AccessorType, + ObjDesc->Field.AccessLength); + + /* + * Add additional 2 bytes for modeled GenericSerialBus data buffer: + * typedef struct { + * BYTEStatus; // Byte 0 of the data buffer + * BYTELength; // Byte 1 of the data buffer + * BYTE[x-1]Data; // Bytes 2-x of the arbitrary length data buffer, + * } + */ + Length += 2; + Function = ACPI_READ | (AccessorType << 16); } else /* IPMI */ { @@ -251,6 +333,7 @@ AcpiExWriteDataToField ( void *Buffer; ACPI_OPERAND_OBJECT *BufferDesc; UINT32 Function; + UINT16 AccessorType; ACPI_FUNCTION_TRACE_PTR (ExWriteDataToField, ObjDesc); @@ -310,8 +393,20 @@ AcpiExWriteDataToField ( } else if (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS) { - Length = ACPI_GSBUS_BUFFER_SIZE; - Function = ACPI_WRITE | (ObjDesc->Field.Attribute << 16); + AccessorType = ObjDesc->Field.Attribute; + Length = AcpiExGetSerialAccessLength (AccessorType, + ObjDesc->Field.AccessLength); + + /* + * Add additional 2 bytes for modeled GenericSerialBus data buffer: + * typedef struct { + * BYTEStatus; // Byte 0 of the data buffer + * BYTELength; // Byte 1 of the data buffer + * BYTE[x-1]Data; // Bytes 2-x of the arbitrary length data buffer, + * } + */ + Length += 2; + Function = ACPI_WRITE | (AccessorType << 16); } else /* IPMI */ { |