diff options
Diffstat (limited to 'compiler/aslresource.c')
| -rw-r--r-- | compiler/aslresource.c | 294 |
1 files changed, 293 insertions, 1 deletions
diff --git a/compiler/aslresource.c b/compiler/aslresource.c index 421fde3a3671..67aabcadae1b 100644 --- a/compiler/aslresource.c +++ b/compiler/aslresource.c @@ -1,7 +1,7 @@ /****************************************************************************** * - * Module Name: aslresource - Resource templates and descriptors + * Module Name: aslresource - Resource template/descriptor utilities * *****************************************************************************/ @@ -126,6 +126,298 @@ /******************************************************************************* * + * FUNCTION: RsSmallAddressCheck + * + * PARAMETERS: Minimum - Address Min value + * Maximum - Address Max value + * Length - Address range value + * Alignment - Address alignment value + * MinOp - Original Op for Address Min + * MaxOp - Original Op for Address Max + * LengthOp - Original Op for address range + * AlignOp - Original Op for address alignment. If + * NULL, means "zero value for alignment is + * OK, and means 64K alignment" (for + * Memory24 descriptor) + * + * RETURN: None. Adds error messages to error log if necessary + * + * DESCRIPTION: Perform common value checks for "small" address descriptors. + * Currently: + * Io, Memory24, Memory32 + * + ******************************************************************************/ + +void +RsSmallAddressCheck ( + UINT8 Type, + UINT32 Minimum, + UINT32 Maximum, + UINT32 Length, + UINT32 Alignment, + ACPI_PARSE_OBJECT *MinOp, + ACPI_PARSE_OBJECT *MaxOp, + ACPI_PARSE_OBJECT *LengthOp, + ACPI_PARSE_OBJECT *AlignOp) +{ + + if (Gbl_NoResourceChecking) + { + return; + } + + /* Special case for Memory24, values are compressed */ + + if (Type == ACPI_RESOURCE_NAME_MEMORY24) + { + if (!Alignment) /* Alignment==0 means 64K - no invalid alignment */ + { + Alignment = ACPI_UINT16_MAX + 1; + } + + Minimum <<= 8; + Maximum <<= 8; + Length *= 256; + } + + /* IO descriptor has different definition of min/max, don't check */ + + if (Type != ACPI_RESOURCE_NAME_IO) + { + /* Basic checks on Min/Max/Length */ + + if (Minimum > Maximum) + { + AslError (ASL_ERROR, ASL_MSG_INVALID_MIN_MAX, MinOp, NULL); + } + else if (Length > (Maximum - Minimum + 1)) + { + AslError (ASL_ERROR, ASL_MSG_INVALID_LENGTH, LengthOp, NULL); + } + } + + /* Alignment of zero is not in ACPI spec, but is used to mean byte acc */ + + if (!Alignment) + { + Alignment = 1; + } + + /* Addresses must be an exact multiple of the alignment value */ + + if (Minimum % Alignment) + { + AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MinOp, NULL); + } + if (Maximum % Alignment) + { + AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MaxOp, NULL); + } +} + + +/******************************************************************************* + * + * FUNCTION: RsLargeAddressCheck + * + * PARAMETERS: Minimum - Address Min value + * Maximum - Address Max value + * Length - Address range value + * Granularity - Address granularity value + * Flags - General flags for address descriptors: + * _MIF, _MAF, _DEC + * MinOp - Original Op for Address Min + * MaxOp - Original Op for Address Max + * LengthOp - Original Op for address range + * GranOp - Original Op for address granularity + * + * RETURN: None. Adds error messages to error log if necessary + * + * DESCRIPTION: Perform common value checks for "large" address descriptors. + * Currently: + * WordIo, WordBusNumber, WordSpace + * DWordIo, DWordMemory, DWordSpace + * QWordIo, QWordMemory, QWordSpace + * ExtendedIo, ExtendedMemory, ExtendedSpace + * + * _MIF flag set means that the minimum address is fixed and is not relocatable + * _MAF flag set means that the maximum address is fixed and is not relocatable + * Length of zero means that the record size is variable + * + * This function implements the LEN/MIF/MAF/MIN/MAX/GRA rules within Table 6-40 + * of the ACPI 4.0a specification. Added 04/2010. + * + ******************************************************************************/ + +void +RsLargeAddressCheck ( + UINT64 Minimum, + UINT64 Maximum, + UINT64 Length, + UINT64 Granularity, + UINT8 Flags, + ACPI_PARSE_OBJECT *MinOp, + ACPI_PARSE_OBJECT *MaxOp, + ACPI_PARSE_OBJECT *LengthOp, + ACPI_PARSE_OBJECT *GranOp) +{ + + if (Gbl_NoResourceChecking) + { + return; + } + + /* Basic checks on Min/Max/Length */ + + if (Minimum > Maximum) + { + AslError (ASL_ERROR, ASL_MSG_INVALID_MIN_MAX, MinOp, NULL); + return; + } + else if (Length > (Maximum - Minimum + 1)) + { + AslError (ASL_ERROR, ASL_MSG_INVALID_LENGTH, LengthOp, NULL); + return; + } + + /* If specified (non-zero), ensure granularity is a power-of-two minus one */ + + if (Granularity) + { + if ((Granularity + 1) & + Granularity) + { + AslError (ASL_ERROR, ASL_MSG_INVALID_GRANULARITY, GranOp, NULL); + return; + } + } + + /* + * Check the various combinations of Length, MinFixed, and MaxFixed + */ + if (Length) + { + /* Fixed non-zero length */ + + switch (Flags & (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF)) + { + case 0: + /* + * Fixed length, variable locations (both _MIN and _MAX). + * Length must be a multiple of granularity + */ + if (Granularity & Length) + { + AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, LengthOp, NULL); + } + break; + + case (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF): + + /* Fixed length, fixed location. Granularity must be zero */ + + if (Granularity != 0) + { + AslError (ASL_ERROR, ASL_MSG_INVALID_GRAN_FIXED, GranOp, NULL); + } + + /* Length must be exactly the size of the min/max window */ + + if (Length != (Maximum - Minimum + 1)) + { + AslError (ASL_ERROR, ASL_MSG_INVALID_LENGTH_FIXED, LengthOp, NULL); + } + break; + + /* All other combinations are invalid */ + + case ACPI_RESOURCE_FLAG_MIF: + case ACPI_RESOURCE_FLAG_MAF: + default: + AslError (ASL_ERROR, ASL_MSG_INVALID_ADDR_FLAGS, LengthOp, NULL); + } + } + else + { + /* Variable length (length==0) */ + + switch (Flags & (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF)) + { + case 0: + /* + * Both _MIN and _MAX are variable. + * No additional requirements, just exit + */ + break; + + case ACPI_RESOURCE_FLAG_MIF: + + /* _MIN is fixed. _MIN must be multiple of _GRA */ + + /* + * The granularity is defined by the ACPI specification to be a + * power-of-two minus one, therefore the granularity is a + * bitmask which can be used to easily validate the addresses. + */ + if (Granularity & Minimum) + { + AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MinOp, NULL); + } + break; + + case ACPI_RESOURCE_FLAG_MAF: + + /* _MAX is fixed. (_MAX + 1) must be multiple of _GRA */ + + if (Granularity & (Maximum + 1)) + { + AslError (ASL_ERROR, ASL_MSG_ALIGNMENT, MaxOp, "-1"); + } + break; + + /* Both MIF/MAF set is invalid if length is zero */ + + case (ACPI_RESOURCE_FLAG_MIF | ACPI_RESOURCE_FLAG_MAF): + default: + AslError (ASL_ERROR, ASL_MSG_INVALID_ADDR_FLAGS, LengthOp, NULL); + } + } +} + + +/******************************************************************************* + * + * FUNCTION: RsGetStringDataLength + * + * PARAMETERS: InitializerOp - Start of a subtree of init nodes + * + * RETURN: Valid string length if a string node is found (otherwise 0) + * + * DESCRIPTION: In a list of peer nodes, find the first one that contains a + * string and return the length of the string. + * + ******************************************************************************/ + +UINT16 +RsGetStringDataLength ( + ACPI_PARSE_OBJECT *InitializerOp) +{ + + while (InitializerOp) + { + if (InitializerOp->Asl.ParseOpcode == PARSEOP_STRING_LITERAL) + { + return ((UINT16) (strlen (InitializerOp->Asl.Value.String) + 1)); + } + InitializerOp = ASL_GET_PEER_NODE (InitializerOp); + } + + return 0; +} + + +/******************************************************************************* + * * FUNCTION: RsAllocateResourceNode * * PARAMETERS: Size - Size of node in bytes |