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Remove emulator_generate and merge into emulator_tick

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This commit is contained in:
Hansung Kim
2025-01-05 00:04:28 -08:00
parent 049394518b
commit 17001efbf3
2 changed files with 43 additions and 46 deletions
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51
src/main/resources/csrc/SimEmulator.cc
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@@ -5,30 +5,39 @@
#include <stdint.h>
extern "C" void emulator_init_rs(int num_lanes);
extern "C" void emulator_tick_rs(uint8_t *vec_d_ready, uint8_t *vec_d_valid,
uint8_t *vec_d_is_store, int *vec_d_size,
long long *vec_d_data);
extern "C" void emulator_generate_rs(uint8_t *vec_a_ready, uint8_t *vec_a_valid,
long long *vec_a_address,
uint8_t *vec_a_is_store, int *vec_a_size,
long long *vec_a_data,
uint8_t *vec_d_ready, uint8_t inflight,
uint8_t *finished);
extern "C" void emulator_tick_rs(uint8_t *vec_a_ready, uint8_t *vec_a_valid,
long long *vec_a_address,
uint8_t *vec_a_is_store, int *vec_a_size,
long long *vec_a_data, uint8_t *vec_d_ready,
uint8_t *vec_d_valid, uint8_t *vec_d_is_store,
int *vec_d_size, long long *vec_d_data,
uint8_t inflight, uint8_t *finished);
// extern "C" void emulator_generate_rs(uint8_t *vec_a_ready, uint8_t *vec_a_valid,
// long long *vec_a_address,
// uint8_t *vec_a_is_store, int *vec_a_size,
// long long *vec_a_data,
// uint8_t *vec_d_ready, uint8_t inflight,
// uint8_t *finished);
extern "C" void emulator_init(int num_lanes) { emulator_init_rs(num_lanes); }
extern "C" void emulator_tick(uint8_t *vec_d_ready, uint8_t *vec_d_valid,
extern "C" void emulator_tick(uint8_t *vec_a_ready, uint8_t *vec_a_valid,
long long *vec_a_address, uint8_t *vec_a_is_store,
int *vec_a_size, long long *vec_a_data,
uint8_t *vec_d_ready, uint8_t *vec_d_valid,
uint8_t *vec_d_is_store, int *vec_d_size,
long long *vec_d_data) {
emulator_tick_rs(vec_d_ready, vec_d_valid, vec_d_is_store, vec_d_size,
vec_d_data);
long long *vec_d_data, uint8_t inflight,
uint8_t *finished) {
emulator_tick_rs(vec_a_ready, vec_a_valid, vec_a_address, vec_a_is_store,
vec_a_size, vec_a_data, vec_d_ready, vec_d_valid,
vec_d_is_store, vec_d_size, vec_d_data, inflight, finished);
}
extern "C" void emulator_generate(uint8_t *vec_a_ready, uint8_t *vec_a_valid,
long long *vec_a_address,
uint8_t *vec_a_is_store, int *vec_a_size,
long long *vec_a_data, uint8_t *vec_d_ready,
uint8_t inflight, uint8_t *finished) {
emulator_generate_rs(vec_a_ready, vec_a_valid, vec_a_address, vec_a_is_store,
vec_a_size, vec_a_data, vec_d_ready, inflight, finished);
}
// extern "C" void emulator_generate(uint8_t *vec_a_ready, uint8_t *vec_a_valid,
// long long *vec_a_address,
// uint8_t *vec_a_is_store, int *vec_a_size,
// long long *vec_a_data, uint8_t *vec_d_ready,
// uint8_t inflight, uint8_t *finished) {
// emulator_generate_rs(vec_a_ready, vec_a_valid, vec_a_address, vec_a_is_store,
// vec_a_size, vec_a_data, vec_d_ready, inflight, finished);
// }

38
src/main/resources/vsrc/SimEmulator.v
View File

@@ -9,15 +9,6 @@ import "DPI-C" function void emulator_init(
// (2) C function declaration
// (3) DPI function calls inside initial/always blocks
import "DPI-C" function void emulator_tick
(
output bit vec_d_ready[`MAX_NUM_LANES],
input bit vec_d_valid[`MAX_NUM_LANES],
input bit vec_d_is_store[`MAX_NUM_LANES],
input int vec_d_size[`MAX_NUM_LANES],
input longint vec_d_data[`MAX_NUM_LANES]
);
import "DPI-C" function void emulator_generate
(
input bit vec_a_ready[`MAX_NUM_LANES],
output bit vec_a_valid[`MAX_NUM_LANES],
@@ -25,7 +16,12 @@ import "DPI-C" function void emulator_generate
output bit vec_a_is_store[`MAX_NUM_LANES],
output int vec_a_size[`MAX_NUM_LANES],
output longint vec_a_data[`MAX_NUM_LANES],
output bit vec_d_ready[`MAX_NUM_LANES],
input bit vec_d_valid[`MAX_NUM_LANES],
input bit vec_d_is_store[`MAX_NUM_LANES],
input int vec_d_size[`MAX_NUM_LANES],
input longint vec_d_data[`MAX_NUM_LANES],
input bit inflight,
output bit finished
@@ -95,6 +91,8 @@ module SimEmulator #(parameter NUM_LANES = 4) (
emulator_init(NUM_LANES);
end
// negedge might make it easier to view waveform since DPI changes are
// instant and make it look like they happen before the clockedge
always @(posedge clock) begin
if (reset) begin
for (integer tid = 0; tid < NUM_LANES; tid = tid + 1) begin
@@ -107,14 +105,19 @@ module SimEmulator #(parameter NUM_LANES = 4) (
end
__in_finished = 1'b0;
end else begin
emulator_generate(
emulator_tick(
__out_a_ready,
__in_a_valid,
__in_a_address,
__in_a_is_store,
__in_a_size,
__in_a_data,
__in_d_ready,
__out_d_valid,
__out_d_is_store,
__out_d_size,
__out_d_data,
__out_inflight,
__in_finished
@@ -125,19 +128,4 @@ module SimEmulator #(parameter NUM_LANES = 4) (
// end
end
end
// negedge is important here; the DPI logic is essentially functioning as
// a combinational logic, so we want to reflect the signal change from DPI
// at the *current* cycle, not the next.
always @(negedge clock) begin
if (!reset) begin
emulator_tick(
__in_d_ready,
__out_d_valid,
__out_d_is_store,
__out_d_size,
__out_d_data
);
end
end
endmodule