Resetting a struct with a enum inside it needs special consideration, as enum can only have it's label as values. So a '{default:0} won't work.
To fix this, write a function which assigns the default value for the struct (Basically enum with default label)
e.g.:
typedef enum logic {
RD,
WR
} op_e;
typedef struct packed {
op_e optype;
logic exclusive;
} op_t;
typedef struct packed {
op_t op;
logic [63:0] data;
} inst_t;
inst_t inst;
always_comb begin
inst = '{default:0};
end
function automatic inst_t rst_inst_t;
inst_t.op.optype = RD;
inst_t.op.exclusive = '0;
inst_t.data = '0;
endfunction
always_comb begin
inst = rst_inst_t();
end
Tags: #enum #struct #reset