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Diffstat (limited to 'importtemp/fapi2/include/fapi2_attribute_service.H')
| -rw-r--r-- | importtemp/fapi2/include/fapi2_attribute_service.H | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/importtemp/fapi2/include/fapi2_attribute_service.H b/importtemp/fapi2/include/fapi2_attribute_service.H new file mode 100644 index 00000000..b031f6e8 --- /dev/null +++ b/importtemp/fapi2/include/fapi2_attribute_service.H @@ -0,0 +1,127 @@ +/// +/// @file src/include/usr/hwpf/fapi2/fapi2_attribute_service.H +/// +/// @brief Defines the FAPI_ATTR_GET and FAPI_ATTR_SET macros that a user +/// calls to get/set attributes and a check function that the macros use to +/// verify correct usage +/// + +#ifndef FAPI2ATTRIBUTESERVICE_H_ +#define FAPI2ATTRIBUTESERVICE_H_ +#include <stdint.h> +#include <attribute_ids.H> +#include <target.H> +#include <target_types.H> +#include <plat_attribute_service.H> + +/// @brief Macros called by user to get/set attributes for FAPI2 targets +/// +/// Code must have a reference to a FAPI2 Target and an attribute ID (from +/// XML file): +/// fapi2::ReturnCode l_rc; +/// fapi2::Target<target type>& l_target = ????; +/// Ex: Target<TARGET_TYPE_PROC_CHIP>& l_target = ????; +/// +/// To get a copy of an integer attribute and set the attribute +/// uint64_t l_val = 0; +/// l_rc = FAPI_ATTR_GET(<ID>, l_target, l_val); +/// l_rc = FAPI_ATTR_SET(<ID>, l_target, l_val); +/// +/// To get a copy of an integer array attribute and set the attribute +/// uint32_t l_pVal[4] = {0}; +/// l_rc = FAPI_ATTR_GET(<ID>, l_target, l_pVal); +/// l_rc = FAPI_ATTR_SET(<ID>, l_target, l_pVal); +/// +/// A priveleged attribute is one that a HWP should not generally access, +/// examples include ATTR_NAME and ATTR_EC, where usage can lead to a non +/// data-driven design. A privileged attribute can be accessed with +/// FAPI_ATTR_GET_PRIVILEGED and FAPI_ATTR_SET_PRIVILEGED +/// +/// The non-PRIVILEGED macros first call a template function (compiler will +/// optimize out) that will cause a compile failure if the attribute is +/// privileged, they then call a PRIVILEGED macro to get/set the attribute +/// +/// The PRIVILEGED macros call a template function (compiler will optimize out) +/// that will cause a compile failure if the ID is not valid or VAL is not the +/// correct type. +// + +#define FAPI_ATTR_GET(ID, TARGET, VAL) \ + (fapi2::failIfPrivileged<ID##_Privileged>(), \ + fapi2::Target<ID##_TargetType>(TARGET), \ + fapi2::checkIdType<ID##_Type>(ID, VAL), \ + ID##_GETMACRO(ID, TARGET, VAL)) + +#define FAPI_ATTR_SET(ID, TARGET, VAL) \ + (fapi2::failIfPrivileged<ID##_Privileged>(), \ + fapi2::Target<ID##_TargetType>(TARGET), \ + fapi2::checkIdType<ID##_Type>(ID, VAL), \ + ID##_SETMACRO(ID, TARGET, VAL)) + +#define FAPI_ATTR_GET_PRIVILEGED(ID, TARGET, VAL) \ + (fapi2::checkIdType<ID##_Type>(ID, VAL), \ + ID##_GETMACRO(ID, TARGET, VAL)) + +#define FAPI_ATTR_SET_PRIVILEGED(ID, TARGET, VAL) \ + (fapi2::checkIdType<ID##_Type>(ID, VAL), \ + ID##_SETMACRO(ID, TARGET, VAL)) + +namespace fapi2 +{ + +/// +/// @brief Get an InitFile attribute for FAPI2 +/// +/// This function gets a copy of an attribute. In the case of an array attribute, +/// The value in the specified index is retrieved. This should be used by the +/// InitFile HWP only, that HWP processes a binary InitFile and therefore needs +/// to read a variable ID of a variable data type. Standard HWPs should use the +/// FAPI2_ATTR_GET macro which automatically checks the type for correct usage. +/// +/// If there are ever attributes with more than 4 dimensions then this function +/// will need to be updated. +/// +/// @Tparam K template parameter, passed in target. +/// @param[in] i_id AttributeID +/// @param[in] i_target Reference to fapi2::Target (can be NULL for system) +/// @param[out] o_val Reference to uint64_t where attribute value is set +/// @param[in] i_arrayIndex1 If array attribute then index1 +/// @param[in] i_arrayIndex2 If at least 2D array attribute then index2 +/// @param[in] i_arrayIndex3 If at least 3D array attribute then index3 +/// @param[in] i_arrayIndex4 If at least 4D array attribute then index4 +/// +/// @return ReturnCode. Zero if success +/// +template< TargetType K > +ReturnCode getInitFileAttr(const AttributeId i_id, + const Target<K>& i_target, + uint64_t & o_val, + const uint32_t i_arrayIndex1 = 0, + const uint32_t i_arrayIndex2 = 0, + const uint32_t i_arrayIndex3 = 0, + const uint32_t i_arrayIndex4 = 0); + +/** + * @brief Check the ID and TYPE + * + * This is called by FAPI code to check at compile time that a FAPI attribute + * access is using the correct data type and a valid AttributeId + */ +template<typename T> inline void checkIdType(AttributeId, T &) {} + +/** + * @brief Fail if attribute privileged + * + * This is called by FAPI code to check at compile time that a standard FAPI + * attribute access (FAPI_ATTR_GET) is not accessing a privileged attribute + */ +class ErrorAccessingPrivilegedAttribute; +template<const bool PRIVILEGED> void failIfPrivileged() +{ + ErrorAccessingPrivilegedAttribute(); +} +template <> inline void failIfPrivileged<false>() {} + +} + +#endif // FAPI2ATTRIBUTESERVICE_H_ |
