void check_counts(int oversubscribed)
{
// First pass to snapshot the current counts
for (unsigned int i = 0; i < MAX_NUM_STREAMS; i++) {
stream_state[i].active = ((stream_state[i].last_count != 0) &&
(stream_state[i].count != 0));
stream_state[i].last_count = stream_state[i].snapshot;
// Ensure the read/modify of count is atomic
hwlock_acquire(lock);
stream_state[i].snapshot = stream_state[i].count;
stream_state[i].count = 0;
hwlock_release(lock);
}
// Second pass to do the checking and printing
for (unsigned int i = 0; i < MAX_NUM_STREAMS; i++) {
if (stream_state[i].id.low || stream_state[i].id.high) {
if (stream_state[i].snapshot == 0) {
debug_printf("Removing stream 0x%x%x\n", stream_state[i].id.high, stream_state[i].id.low);
hwlock_acquire(lock);
stream_state[i].id.high = 0;
stream_state[i].id.low = 0;
hwlock_release(lock);
} else {
unsigned int expected_rate = CLASS_A_PACKETS_PER_SEC;
if (oversubscribed) {
// When the stream is oversubscribed then there will be an extra byte
// of bandwidth allocated per packet.
const unsigned int preamble_bytes = 8;
const unsigned int ifg_bytes = 96/8; // InterFrameGap = 96 bit-times
// The one extra byte is for the entire frame (data + preamble + IFG)
unsigned int num_bytes = stream_state[i].packet_num_bytes +
preamble_bytes + ifg_bytes;
expected_rate = expected_rate * (num_bytes + 1) / num_bytes;
}
// Need to check the value of last_count because otherwise there are
// spurious errors when the stream is stopping.
if (stream_state[i].active &&
(stream_state[i].last_count < (expected_rate - ERROR_MARGIN) ||
stream_state[i].last_count > (expected_rate + ERROR_MARGIN))) {
debug_printf("ERROR: 0x%x%x %d\n", stream_state[i].id.high, stream_state[i].id.low,
stream_state[i].last_count);
}
}
}
}
}
void media_input_fifo_update_enable_ind_state(unsigned int enable, unsigned int mask)
{
if (!enable_lock) return;
hwlock_acquire(enable_lock);
enable_indication_state = (enable_indication_state & ~mask) | enable;
hwlock_release(enable_lock);
}
void media_input_fifo_disable_fifos(unsigned int enable)
{
if (!enable_lock) return;
hwlock_acquire(enable_lock);
enable_request_state &= ~enable;
hwlock_release(enable_lock);
}
void avb_1722_router_table_add_or_update_forwarding_simple(int key0, int key1, int f0rward)
{
hwlock_acquire(table_lock);
for(int i=0;i<AVB_MAX_NUM_SINK_AND_FORWARD_STREAMS;i++) {
if (key0 == router_table[i].id[0] &&
key1 == router_table[i].id[1]) {
router_table[i].f0rward = f0rward;
hwlock_release(table_lock);
return;
}
}
// Add a new entry
for(int i=0;i<AVB_MAX_NUM_SINK_AND_FORWARD_STREAMS;i++) {
if (router_table[i].id[0] == 0) {
router_table[i].f0rward = f0rward;
router_table[i].link = -1;
router_table[i].avb_hash = -1;
router_table[i].id[0] = key0;
router_table[i].id[1] = key1;
break;
}
}
hwlock_release(table_lock);
}
int avb_1722_router_table_lookup_simple(int key0,
int key1,
int *link,
int *avb_hash,
int *f0rward)
{
if (key0==0 && key1==0) {
return 0;
}
hwlock_acquire(table_lock);
for(int i=0;i<AVB_MAX_NUM_SINK_AND_FORWARD_STREAMS;i++) {
__asm__(".xtaloop " STRINGIFY(AVB_MAX_NUM_SINK_AND_FORWARD_STREAMS) "\n");
if (key0 == router_table[i].id[0] &&
key1 == router_table[i].id[1]) {
*avb_hash = router_table[i].avb_hash;
*f0rward = router_table[i].f0rward;
*link = router_table[i].link;
hwlock_release(table_lock);
return 1;
}
}
hwlock_release(table_lock);
return 0;
}
void avb_1722_router_table_add_or_update_entry_simple(int key0,
int key1,
int link,
int avb_hash)
{
hwlock_acquire(table_lock);
for(int i=0;i<AVB_MAX_NUM_SINK_AND_FORWARD_STREAMS;i++) {
if (key0 == router_table[i].id[0] &&
key1 == router_table[i].id[1]) {
// Found an existing entry with this stream ID, update it
router_table[i].link = link;
router_table[i].avb_hash = avb_hash;
hwlock_release(table_lock);
return;
}
}
// Add a new entry
for(int i=0;i<AVB_MAX_NUM_SINK_AND_FORWARD_STREAMS;i++) {
if (router_table[i].id[0] == 0) {
router_table[i].f0rward = 0;
router_table[i].link = link;
router_table[i].avb_hash = avb_hash;
router_table[i].id[0] = key0;
router_table[i].id[1] = key1;
break;
}
}
hwlock_release(table_lock);
return;
}
int avb_1722_router_table_lookup_hash(int key0,
int key1,
unsigned int *link,
unsigned int *avb_hash)
{
unsigned int x;
if (key0==0 && key1==0)
return 0;
hwlock_acquire(table_lock);
x = hash(key0, key1, router_table_poly[0]);
if (key0 == router_table[x].id[0] &&
key1 == router_table[x].id[1]) {
*link = router_table[x].link;
*avb_hash = router_table[x].avb_hash;
hwlock_release(table_lock);
return 1;
}
x = hash(key0, key1, router_table_poly[1]);
if (key0 == router_table[x].id[0] &&
key1 == router_table[x].id[1]) {
*link = router_table[x].link;
*avb_hash = router_table[x].avb_hash;
hwlock_release(table_lock);
return 1;
}
hwlock_release(table_lock);
return 0;
}
void avb_1722_router_table_add_entry_hash(int key0,
int key1,
int link,
int avb_hash)
{
int success = 0;
while (!success) {
success = insert(key0, key1, link, avb_hash);
if (success) {
avb_1722_router_table_entry_t *old_table = router_table;
// flip the tables
hwlock_acquire(table_lock);
router_table = backup_table;
router_table_poly[0] = backup_table_poly[0];
router_table_poly[1] = backup_table_poly[1];
hwlock_release(table_lock);
backup_table = old_table;
// make sure both tables contain the same
memcpy(backup_table, router_table, sizeof(router_table0));
}
else {
// refill table with a different hash and try again
refill_backup_table();
}
}
}
static void increment_count(const stream_id_t *id, unsigned int packet_num_bytes)
{
unsigned int free_index = MAX_NUM_STREAMS;
hwlock_acquire(lock);
for (unsigned int i = 0; i < MAX_NUM_STREAMS; i++) {
if ((id->low == stream_state[i].id.low) &&
(id->high == stream_state[i].id.high)) {
stream_state[i].count++;
if (stream_state[i].packet_num_bytes != packet_num_bytes) {
debug_printf("ERROR stream 0x%x%x packet size changed from %d to %d\n",
stream_state[i].id.high, stream_state[i].id.low,
stream_state[i].packet_num_bytes, packet_num_bytes);
}
goto increment_count_done;
} else if ((stream_state[i].id.low == 0) &&
(stream_state[i].id.high == 0)) {
free_index = i;
}
}
if (free_index != MAX_NUM_STREAMS) {
stream_state[free_index].id.low = id->low;
stream_state[free_index].id.high = id->high;
stream_state[free_index].count = 1;
stream_state[free_index].snapshot = 0;
stream_state[free_index].packet_num_bytes = packet_num_bytes;
debug_printf("Adding stream 0x%x%x\n", stream_state[free_index].id.high, stream_state[free_index].id.low);
} else {
assert(0); // Can't track this stream - no free slots available
}
increment_count_done:
hwlock_release(lock);
}
void avb_1722_router_table_add_entry_simple(int key0,
int key1,
int link,
int sink_num)
{
hwlock_acquire(table_lock);
router_table[sink_num].id[0] = key0;
router_table[sink_num].id[1] = key1;
router_table[sink_num].link = link;
hwlock_release(table_lock);
return;
}
void avb_1722_router_table_remove_entry_simple(int key0, int key1) {
hwlock_acquire(table_lock);
for(int i=0;i<AVB_MAX_NUM_SINK_AND_FORWARD_STREAMS;i++) {
if (key0 == router_table[i].id[0] &&
key1 == router_table[i].id[1]) {
router_table[i].id[0] = 0;
router_table[i].id[1] = 0;
// FIXME: Zero the whole entry!
hwlock_release(table_lock);
return;
}
}
hwlock_release(table_lock);
}
int avb_1722_router_table_lookup_simple(int key0,
int key1,
unsigned int *link,
unsigned int *sink_num)
{
if (key0==0 && key1==0)
return 0;
hwlock_acquire(table_lock);
for(int i=0;i<AVB_NUM_SINKS;i++) {
__asm__(".xtaloop " STRINGIFY(AVB_NUM_SINKS) "\n");
if (key0 == router_table[i].id[0] &&
key1 == router_table[i].id[1]) {
*sink_num = i;
*link = router_table[i].link;
hwlock_release(table_lock);
return 1;
}
}
hwlock_release(table_lock);
return 0;
}
void acquire_lock(void) // Acquire Hardware lock (MutEx)
{
hwlock_acquire(hwlock);
} // acquiree_lock