diff options
Diffstat (limited to 'source/components/executer/exfield.c')
| -rw-r--r-- | source/components/executer/exfield.c | 341 |
1 files changed, 73 insertions, 268 deletions
diff --git a/source/components/executer/exfield.c b/source/components/executer/exfield.c index a95d161d44dff..ccd6bee0b9af0 100644 --- a/source/components/executer/exfield.c +++ b/source/components/executer/exfield.c @@ -1,6 +1,6 @@ /****************************************************************************** * - * Module Name: exfield - ACPI AML (p-code) execution - field manipulation + * Module Name: exfield - AML execution - FieldUnit read/write * *****************************************************************************/ @@ -159,72 +159,68 @@ #define _COMPONENT ACPI_EXECUTER ACPI_MODULE_NAME ("exfield") -/* Local prototypes */ -static UINT32 -AcpiExGetSerialAccessLength ( - UINT32 AccessorType, - UINT32 AccessLength); +/* + * This table maps the various Attrib protocols to the byte transfer + * length. Used for the generic serial bus. + */ +#define ACPI_INVALID_PROTOCOL_ID 0x80 +#define ACPI_MAX_PROTOCOL_ID 0x0F + +const UINT8 AcpiProtocolLengths[] = +{ + ACPI_INVALID_PROTOCOL_ID, /* 0 - reserved */ + ACPI_INVALID_PROTOCOL_ID, /* 1 - reserved */ + 0x00, /* 2 - ATTRIB_QUICK */ + ACPI_INVALID_PROTOCOL_ID, /* 3 - reserved */ + 0x01, /* 4 - ATTRIB_SEND_RECEIVE */ + ACPI_INVALID_PROTOCOL_ID, /* 5 - reserved */ + 0x01, /* 6 - ATTRIB_BYTE */ + ACPI_INVALID_PROTOCOL_ID, /* 7 - reserved */ + 0x02, /* 8 - ATTRIB_WORD */ + ACPI_INVALID_PROTOCOL_ID, /* 9 - reserved */ + 0xFF, /* A - ATTRIB_BLOCK */ + 0xFF, /* B - ATTRIB_BYTES */ + 0x02, /* C - ATTRIB_PROCESS_CALL */ + 0xFF, /* D - ATTRIB_BLOCK_PROCESS_CALL */ + 0xFF, /* E - ATTRIB_RAW_BYTES */ + 0xFF /* F - ATTRIB_RAW_PROCESS_BYTES */ +}; /******************************************************************************* * - * FUNCTION: AcpiExGetSerialAccessLength + * FUNCTION: AcpiExGetProtocolBufferLength * - * PARAMETERS: AccessorType - The type of the protocol indicated by region + * PARAMETERS: ProtocolId - The type of the protocol indicated by region * field access attributes - * AccessLength - The access length of the region field + * ReturnLength - Where the protocol byte transfer length is + * returned * - * RETURN: Decoded access length + * RETURN: Status and decoded byte transfer length * * DESCRIPTION: This routine returns the length of the GenericSerialBus * protocol bytes * ******************************************************************************/ -static UINT32 -AcpiExGetSerialAccessLength ( - UINT32 AccessorType, - UINT32 AccessLength) +ACPI_STATUS +AcpiExGetProtocolBufferLength ( + UINT32 ProtocolId, + UINT32 *ReturnLength) { - UINT32 Length; - - switch (AccessorType) + if ((ProtocolId > ACPI_MAX_PROTOCOL_ID) || + (AcpiProtocolLengths[ProtocolId] == ACPI_INVALID_PROTOCOL_ID)) { - 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; + ACPI_ERROR ((AE_INFO, + "Invalid Field/AccessAs protocol ID: 0x%4.4X", ProtocolId)); - 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 (AE_AML_PROTOCOL); } - return (Length); + *ReturnLength = AcpiProtocolLengths[ProtocolId]; + return (AE_OK); } @@ -251,10 +247,8 @@ AcpiExReadDataFromField ( { ACPI_STATUS Status; ACPI_OPERAND_OBJECT *BufferDesc; - ACPI_SIZE Length; void *Buffer; - UINT32 Function; - UINT16 AccessorType; + UINT32 BufferLength; ACPI_FUNCTION_TRACE_PTR (ExReadDataFromField, ObjDesc); @@ -287,63 +281,14 @@ AcpiExReadDataFromField ( } } else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) && - (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS || - ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS || - ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI)) + (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS || + ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS || + ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI)) { - /* - * This is an SMBus, GSBus or IPMI read. We must create a buffer to - * hold the data and then directly access the region handler. - * - * Note: SMBus and GSBus protocol value is passed in upper 16-bits - * of Function - */ - if (ObjDesc->Field.RegionObj->Region.SpaceId == - ACPI_ADR_SPACE_SMBUS) - { - Length = ACPI_SMBUS_BUFFER_SIZE; - Function = ACPI_READ | (ObjDesc->Field.Attribute << 16); - } - else if (ObjDesc->Field.RegionObj->Region.SpaceId == - ACPI_ADR_SPACE_GSBUS) - { - AccessorType = ObjDesc->Field.Attribute; - Length = AcpiExGetSerialAccessLength ( - AccessorType, ObjDesc->Field.AccessLength); - - /* - * Add additional 2 bytes for the GenericSerialBus data buffer: - * - * Status; (Byte 0 of the data buffer) - * Length; (Byte 1 of the data buffer) - * Data[x-1]: (Bytes 2-x of the arbitrary length data buffer) - */ - Length += 2; - Function = ACPI_READ | (AccessorType << 16); - } - else /* IPMI */ - { - Length = ACPI_IPMI_BUFFER_SIZE; - Function = ACPI_READ; - } - - BufferDesc = AcpiUtCreateBufferObject (Length); - if (!BufferDesc) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - /* Lock entire transaction if requested */ - - AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); - - /* Call the region handler for the read */ - - Status = AcpiExAccessRegion (ObjDesc, 0, - ACPI_CAST_PTR (UINT64, BufferDesc->Buffer.Pointer), Function); + /* SMBus, GSBus, IPMI serial */ - AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); - goto Exit; + Status = AcpiExReadSerialBus (ObjDesc, RetBufferDesc); + return_ACPI_STATUS (Status); } /* @@ -356,14 +301,14 @@ AcpiExReadDataFromField ( * * Note: Field.length is in bits. */ - Length = (ACPI_SIZE) ACPI_ROUND_BITS_UP_TO_BYTES ( + BufferLength = (ACPI_SIZE) ACPI_ROUND_BITS_UP_TO_BYTES ( ObjDesc->Field.BitLength); - if (Length > AcpiGbl_IntegerByteWidth) + if (BufferLength > AcpiGbl_IntegerByteWidth) { /* Field is too large for an Integer, create a Buffer instead */ - BufferDesc = AcpiUtCreateBufferObject (Length); + BufferDesc = AcpiUtCreateBufferObject (BufferLength); if (!BufferDesc) { return_ACPI_STATUS (AE_NO_MEMORY); @@ -380,47 +325,22 @@ AcpiExReadDataFromField ( return_ACPI_STATUS (AE_NO_MEMORY); } - Length = AcpiGbl_IntegerByteWidth; + BufferLength = AcpiGbl_IntegerByteWidth; Buffer = &BufferDesc->Integer.Value; } if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) && (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO)) { - /* - * For GPIO (GeneralPurposeIo), the Address will be the bit offset - * from the previous Connection() operator, making it effectively a - * pin number index. The BitLength is the length of the field, which - * is thus the number of pins. - */ - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "GPIO FieldRead [FROM]: Pin %u Bits %u\n", - ObjDesc->Field.PinNumberIndex, ObjDesc->Field.BitLength)); - - /* Lock entire transaction if requested */ - - AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); + /* General Purpose I/O */ - /* Perform the write */ - - Status = AcpiExAccessRegion ( - ObjDesc, 0, (UINT64 *) Buffer, ACPI_READ); - - AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); - if (ACPI_FAILURE (Status)) - { - AcpiUtRemoveReference (BufferDesc); - } - else - { - *RetBufferDesc = BufferDesc; - } - return_ACPI_STATUS (Status); + Status = AcpiExReadGpio (ObjDesc, Buffer); + goto Exit; } ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "FieldRead [TO]: Obj %p, Type %X, Buf %p, ByteLen %X\n", - ObjDesc, ObjDesc->Common.Type, Buffer, (UINT32) Length)); + ObjDesc, ObjDesc->Common.Type, Buffer, BufferLength)); ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "FieldRead [FROM]: BitLen %X, BitOff %X, ByteOff %X\n", ObjDesc->CommonField.BitLength, @@ -433,7 +353,7 @@ AcpiExReadDataFromField ( /* Read from the field */ - Status = AcpiExExtractFromField (ObjDesc, Buffer, (UINT32) Length); + Status = AcpiExExtractFromField (ObjDesc, Buffer, BufferLength); AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); @@ -472,11 +392,8 @@ AcpiExWriteDataToField ( ACPI_OPERAND_OBJECT **ResultDesc) { ACPI_STATUS Status; - UINT32 Length; + UINT32 BufferLength; void *Buffer; - ACPI_OPERAND_OBJECT *BufferDesc; - UINT32 Function; - UINT16 AccessorType; ACPI_FUNCTION_TRACE_PTR (ExWriteDataToField, ObjDesc); @@ -505,131 +422,21 @@ AcpiExWriteDataToField ( } } else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) && - (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS || - ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS || - ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI)) + (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO)) { - /* - * This is an SMBus, GSBus or IPMI write. We will bypass the entire - * field mechanism and handoff the buffer directly to the handler. - * For these address spaces, the buffer is bi-directional; on a - * write, return data is returned in the same buffer. - * - * Source must be a buffer of sufficient size: - * ACPI_SMBUS_BUFFER_SIZE, ACPI_GSBUS_BUFFER_SIZE, or - * ACPI_IPMI_BUFFER_SIZE. - * - * Note: SMBus and GSBus protocol type is passed in upper 16-bits - * of Function - */ - if (SourceDesc->Common.Type != ACPI_TYPE_BUFFER) - { - ACPI_ERROR ((AE_INFO, - "SMBus/IPMI/GenericSerialBus write requires " - "Buffer, found type %s", - AcpiUtGetObjectTypeName (SourceDesc))); - - return_ACPI_STATUS (AE_AML_OPERAND_TYPE); - } - - if (ObjDesc->Field.RegionObj->Region.SpaceId == - ACPI_ADR_SPACE_SMBUS) - { - Length = ACPI_SMBUS_BUFFER_SIZE; - Function = ACPI_WRITE | (ObjDesc->Field.Attribute << 16); - } - else if (ObjDesc->Field.RegionObj->Region.SpaceId == - ACPI_ADR_SPACE_GSBUS) - { - AccessorType = ObjDesc->Field.Attribute; - Length = AcpiExGetSerialAccessLength ( - AccessorType, ObjDesc->Field.AccessLength); - - /* - * Add additional 2 bytes for the GenericSerialBus data buffer: - * - * Status; (Byte 0 of the data buffer) - * Length; (Byte 1 of the data buffer) - * Data[x-1]: (Bytes 2-x of the arbitrary length data buffer) - */ - Length += 2; - Function = ACPI_WRITE | (AccessorType << 16); - } - else /* IPMI */ - { - Length = ACPI_IPMI_BUFFER_SIZE; - Function = ACPI_WRITE; - } - - if (SourceDesc->Buffer.Length < Length) - { - ACPI_ERROR ((AE_INFO, - "SMBus/IPMI/GenericSerialBus write requires " - "Buffer of length %u, found length %u", - Length, SourceDesc->Buffer.Length)); - - return_ACPI_STATUS (AE_AML_BUFFER_LIMIT); - } - - /* Create the bi-directional buffer */ - - BufferDesc = AcpiUtCreateBufferObject (Length); - if (!BufferDesc) - { - return_ACPI_STATUS (AE_NO_MEMORY); - } - - Buffer = BufferDesc->Buffer.Pointer; - memcpy (Buffer, SourceDesc->Buffer.Pointer, Length); + /* General Purpose I/O */ - /* Lock entire transaction if requested */ - - AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); - - /* - * Perform the write (returns status and perhaps data in the - * same buffer) - */ - Status = AcpiExAccessRegion ( - ObjDesc, 0, (UINT64 *) Buffer, Function); - AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); - - *ResultDesc = BufferDesc; + Status = AcpiExWriteGpio (SourceDesc, ObjDesc, ResultDesc); return_ACPI_STATUS (Status); } else if ((ObjDesc->Common.Type == ACPI_TYPE_LOCAL_REGION_FIELD) && - (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GPIO)) + (ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_SMBUS || + ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_GSBUS || + ObjDesc->Field.RegionObj->Region.SpaceId == ACPI_ADR_SPACE_IPMI)) { - /* - * For GPIO (GeneralPurposeIo), we will bypass the entire field - * mechanism and handoff the bit address and bit width directly to - * the handler. The Address will be the bit offset - * from the previous Connection() operator, making it effectively a - * pin number index. The BitLength is the length of the field, which - * is thus the number of pins. - */ - if (SourceDesc->Common.Type != ACPI_TYPE_INTEGER) - { - return_ACPI_STATUS (AE_AML_OPERAND_TYPE); - } - - ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, - "GPIO FieldWrite [FROM]: (%s:%X), Val %.8X [TO]: Pin %u Bits %u\n", - AcpiUtGetTypeName (SourceDesc->Common.Type), - SourceDesc->Common.Type, (UINT32) SourceDesc->Integer.Value, - ObjDesc->Field.PinNumberIndex, ObjDesc->Field.BitLength)); - - Buffer = &SourceDesc->Integer.Value; + /* SMBus, GSBus, IPMI serial */ - /* Lock entire transaction if requested */ - - AcpiExAcquireGlobalLock (ObjDesc->CommonField.FieldFlags); - - /* Perform the write */ - - Status = AcpiExAccessRegion ( - ObjDesc, 0, (UINT64 *) Buffer, ACPI_WRITE); - AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); + Status = AcpiExWriteSerialBus (SourceDesc, ObjDesc, ResultDesc); return_ACPI_STATUS (Status); } @@ -640,30 +447,29 @@ AcpiExWriteDataToField ( case ACPI_TYPE_INTEGER: Buffer = &SourceDesc->Integer.Value; - Length = sizeof (SourceDesc->Integer.Value); + BufferLength = sizeof (SourceDesc->Integer.Value); break; case ACPI_TYPE_BUFFER: Buffer = SourceDesc->Buffer.Pointer; - Length = SourceDesc->Buffer.Length; + BufferLength = SourceDesc->Buffer.Length; break; case ACPI_TYPE_STRING: Buffer = SourceDesc->String.Pointer; - Length = SourceDesc->String.Length; + BufferLength = SourceDesc->String.Length; break; default: - return_ACPI_STATUS (AE_AML_OPERAND_TYPE); } ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "FieldWrite [FROM]: Obj %p (%s:%X), Buf %p, ByteLen %X\n", SourceDesc, AcpiUtGetTypeName (SourceDesc->Common.Type), - SourceDesc->Common.Type, Buffer, Length)); + SourceDesc->Common.Type, Buffer, BufferLength)); ACPI_DEBUG_PRINT ((ACPI_DB_BFIELD, "FieldWrite [TO]: Obj %p (%s:%X), BitLen %X, BitOff %X, ByteOff %X\n", @@ -679,8 +485,7 @@ AcpiExWriteDataToField ( /* Write to the field */ - Status = AcpiExInsertIntoField (ObjDesc, Buffer, Length); + Status = AcpiExInsertIntoField (ObjDesc, Buffer, BufferLength); AcpiExReleaseGlobalLock (ObjDesc->CommonField.FieldFlags); - return_ACPI_STATUS (Status); } |