class axi_tx extends uvm_sequence_item;
rand bit wr_rd;
rand bit [`ADDR_WIDTH-1:0] addr;
rand bit [`WIDTH-1:0] dataQ[$]; //to support burst of data
rand bit [3:0] burst_len;
rand bit [2:0] burst_size;
rand burst_type_t burst_type;
rand bit [3:0] txid;
bit [1:0] resp;
bit [31:0] wrap_lower, wrap_upper;
int tx_size;
`uvm_object_utils_begin(axi_tx)
	`uvm_field_int(addr, UVM_ALL_ON|UVM_NOPACK);
	`uvm_field_queue_int(dataQ, UVM_ALL_ON|UVM_NOPACK);
	`uvm_field_int(wr_rd, UVM_ALL_ON|UVM_NOPACK);
	`uvm_field_int(burst_len, UVM_ALL_ON|UVM_NOPACK);
	`uvm_field_int(burst_size, UVM_ALL_ON|UVM_NOPACK);
	`uvm_field_enum(burst_type_t, burst_type, UVM_ALL_ON|UVM_NOPACK);
	`uvm_field_int(txid, UVM_ALL_ON|UVM_NOPACK);
	`uvm_field_int(wrap_lower, UVM_ALL_ON|UVM_NOPACK);
	`uvm_field_int(wrap_upper, UVM_ALL_ON|UVM_NOPACK);
`uvm_object_utils_end
 
`NEW_OBJ
function void post_randomize();
	if (burst_type == WRAP) begin
		tx_size = (burst_len+1) * (2**burst_size);
		wrap_lower = addr - (addr%tx_size);
		wrap_upper = wrap_lower + tx_size - 1;
	end
endfunction
//constraint
constraint dataQ_c{
	dataQ.size() == burst_len+1;
}
constraint burst_type_c{
	burst_type != RSVD_BT;
}
constraint wrap_aligned_c{
  (burst_type) == WRAP -> (addr%(2**burst_size)==0);
}
endclass