static void sps_tpm_enable(void)
{
/*
* Let's make sure we get an interrupt as soon as the header is
* received.
*/
sps_register_rx_handler(SPS_GENERIC_MODE, tpm_rx_handler, 3);
init_new_cycle();
}
static int command_sps(int argc, char **argv)
{
int count = 0;
int target = 10; /* Expect 10 frames by default.*/
char *e;
sps_tx_status(GC_SPS_DUMMY_WORD_DEFAULT);
rx_state = spstrx_not_started;
sps_register_rx_handler(SPS_GENERIC_MODE, sps_receive_callback);
if (argc > 1) {
target = strtoi(argv[1], &e, 10);
if (*e)
return EC_ERROR_PARAM1;
}
while (count++ < target) {
size_t transmitted;
size_t to_go;
size_t index;
/* Wait for a frame to be received.*/
while (rx_state != spstrx_finished) {
watchdog_reload();
usleep(10);
}
/* Transmit the frame back to the host.*/
index = frame_base;
to_go = frame_index - frame_base;
do {
if ((index == frame_base) && (to_go > 8)) {
/*
* This is the first transmit attempt for this
* frame. Send a little just to prime the
* transmit FIFO.
*/
transmitted = sps_transmit
(test_frame + index, 8);
} else {
transmitted = sps_transmit
(test_frame + index, to_go);
}
index += transmitted;
to_go -= transmitted;
} while (to_go);
/*
* Wait for receive state machine to transition out of 'frame
* finised' state.
*/
while (rx_state == spstrx_finished) {
watchdog_reload();
usleep(10);
}
}
sps_unregister_rx_handler();
ccprintf("Processed %d frames\n", count - 1);
ccprintf("rx count %d, tx count %d, tx_empty %d, max rx batch %d\n",
sps_rx_count, sps_tx_count,
tx_empty_count, max_rx_batch);
sps_rx_count =
sps_tx_count =
tx_empty_count =
max_rx_batch = 0;
return EC_SUCCESS;
}
