UVM RAL model global declaration and built-in defines

The UVM RAL model defines certain types, enum, and defines globally.

RAL Model Defines

Defines	Description
`UVM_REG_ADDR_WIDTH	Maximum address width (in bits) Default value = 64 Used to define the uvm_reg_addr_t type
`UVM_REG_DATA_WIDTH	Maximum data width (in bits) Default value = 64 Used to define the uvm_reg_data_t type
`UVM_REG_BYTENABLE_WIDTH	The maximum number of byte enable bits Default value = one per byte in `UVM_REG_DATA_WIDTH Used to define the uvm_reg_byte_en_t type
`UVM_REG_CVR_WIDTH	The maximum number of bits in a uvm_reg_cvr_t coverage model set. Default value = 32

Types	Description
uvm_reg_addr_t	2-state address value with `UVM_REG_ADDR_WIDTH bits
uvm_reg_addr_logic_t	4-state address value with `UVM_REG_ADDR_WIDTH bits
uvm_reg_data_t	2-state data value with `UVM_REG_DATA_WIDTH bits uvm_reg_data_logic_t
uvm_reg_data_logic_t	4-state data value with `UVM_REG_DATA_WIDTH bits
uvm_reg_byte_en_t	2-state byte_enable value with `UVM_REG_BYTENABLE_WIDTH bits
uvm_reg_cvr_t	Coverage model value set with `UVM_REG_CVR_WIDTH bits.
uvm_hdl_path_slice	Slice of an HDL path

Enumerations

Description

uvm_status_e

Return status for register operations

UVM_IS_OK	The operation completed successfully
UVM_NOT_OK	The operation completed with an error
UVM_HAS_X	The operation completed successfully bit had unknown bits.

uvm_path_e

Path used for register operation

UVM_FRONTDOOR	Use the front door
UVM_BACKDOOR	Use the back door
UVM_PREDICT	The operation is derived from observations by a bus monitor via the uvm_reg_predictor class.
UVM_DEFAULT_PATH	The operation specified by the context

uvm_check_e

Read-only or read-and-check

UVM_NO_CHECK	Read-only
UVM_CHECK	Read and check

uvm_access_e

Type of operation begin performed

UVM_READ	Read operation
UVM_WRITE	Write operation

uvm_predict_e

How the mirror is to be updated

UVM_PREDICT_DIRECT	The predicted value is as-is
UVM_PREDICT_READ	Predict based on the specified value having been read
UVM_PREDICT_WRITE	Predict based on the specified value having been written

Note: Please refer to the UVM class reference manual to see all enumerations in the UVM RAL model.

RAL Tutorials