static void
sfxge_rx_qfill(struct sfxge_rxq *rxq, unsigned int target, boolean_t retrying)
{
struct sfxge_softc *sc;
unsigned int index;
struct sfxge_evq *evq;
unsigned int batch;
unsigned int rxfill;
unsigned int mblksize;
int ntodo;
efsys_dma_addr_t addr[SFXGE_REFILL_BATCH];
sc = rxq->sc;
index = rxq->index;
evq = sc->evq[index];
prefetch_read_many(sc->enp);
prefetch_read_many(rxq->common);
SFXGE_EVQ_LOCK_ASSERT_OWNED(evq);
if (__predict_false(rxq->init_state != SFXGE_RXQ_STARTED))
return;
rxfill = rxq->added - rxq->completed;
KASSERT(rxfill <= EFX_RXQ_LIMIT(rxq->entries),
("rxfill > EFX_RXQ_LIMIT(rxq->entries)"));
ntodo = min(EFX_RXQ_LIMIT(rxq->entries) - rxfill, target);
KASSERT(ntodo <= EFX_RXQ_LIMIT(rxq->entries),
("ntodo > EFX_RQX_LIMIT(rxq->entries)"));
if (ntodo == 0)
return;
batch = 0;
mblksize = sc->rx_buffer_size - sc->rx_buffer_align;
while (ntodo-- > 0) {
unsigned int id;
struct sfxge_rx_sw_desc *rx_desc;
bus_dma_segment_t seg;
struct mbuf *m;
id = (rxq->added + batch) & rxq->ptr_mask;
rx_desc = &rxq->queue[id];
KASSERT(rx_desc->mbuf == NULL, ("rx_desc->mbuf != NULL"));
rx_desc->flags = EFX_DISCARD;
m = rx_desc->mbuf = sfxge_rx_alloc_mbuf(sc);
if (m == NULL)
break;
/* m_len specifies length of area to be mapped for DMA */
m->m_len = mblksize;
m->m_data = (caddr_t)P2ROUNDUP((uintptr_t)m->m_data, CACHE_LINE_SIZE);
m->m_data += sc->rx_buffer_align;
sfxge_map_mbuf_fast(rxq->mem.esm_tag, rxq->mem.esm_map, m, &seg);
addr[batch++] = seg.ds_addr;
if (batch == SFXGE_REFILL_BATCH) {
efx_rx_qpost(rxq->common, addr, mblksize, batch,
rxq->completed, rxq->added);
rxq->added += batch;
batch = 0;
}
}
if (ntodo != 0)
sfxge_rx_schedule_refill(rxq, retrying);
if (batch != 0) {
efx_rx_qpost(rxq->common, addr, mblksize, batch,
rxq->completed, rxq->added);
rxq->added += batch;
}
/* Make the descriptors visible to the hardware */
bus_dmamap_sync(rxq->mem.esm_tag, rxq->mem.esm_map,
BUS_DMASYNC_PREWRITE);
efx_rx_qpush(rxq->common, rxq->added, &rxq->pushed);
/* The queue could still be empty if no descriptors were actually
* pushed, in which case there will be no event to cause the next
* refill, so we must schedule a refill ourselves.
*/
if(rxq->pushed == rxq->completed) {
sfxge_rx_schedule_refill(rxq, retrying);
}
}
static void
sfxge_rx_qfill(struct sfxge_rxq *rxq, unsigned int target, boolean_t retrying)
{
struct sfxge_softc *sc;
unsigned int index;
struct sfxge_evq *evq;
unsigned int batch;
unsigned int rxfill;
unsigned int mblksize;
int ntodo;
efsys_dma_addr_t addr[SFXGE_REFILL_BATCH];
sc = rxq->sc;
index = rxq->index;
evq = sc->evq[index];
prefetch_read_many(sc->enp);
prefetch_read_many(rxq->common);
mtx_assert(&evq->lock, MA_OWNED);
if (rxq->init_state != SFXGE_RXQ_STARTED)
return;
rxfill = rxq->added - rxq->completed;
KASSERT(rxfill <= EFX_RXQ_LIMIT(SFXGE_NDESCS),
("rxfill > EFX_RXQ_LIMIT(SFXGE_NDESCS)"));
ntodo = min(EFX_RXQ_LIMIT(SFXGE_NDESCS) - rxfill, target);
KASSERT(ntodo <= EFX_RXQ_LIMIT(SFXGE_NDESCS),
("ntodo > EFX_RQX_LIMIT(SFXGE_NDESCS)"));
if (ntodo == 0)
return;
batch = 0;
mblksize = sc->rx_buffer_size;
while (ntodo-- > 0) {
unsigned int id;
struct sfxge_rx_sw_desc *rx_desc;
bus_dma_segment_t seg;
struct mbuf *m;
id = (rxq->added + batch) & (SFXGE_NDESCS - 1);
rx_desc = &rxq->queue[id];
KASSERT(rx_desc->mbuf == NULL, ("rx_desc->mbuf != NULL"));
rx_desc->flags = EFX_DISCARD;
m = rx_desc->mbuf = sfxge_rx_alloc_mbuf(sc);
if (m == NULL)
break;
sfxge_map_mbuf_fast(rxq->mem.esm_tag, rxq->mem.esm_map, m, &seg);
addr[batch++] = seg.ds_addr;
if (batch == SFXGE_REFILL_BATCH) {
efx_rx_qpost(rxq->common, addr, mblksize, batch,
rxq->completed, rxq->added);
rxq->added += batch;
batch = 0;
}
}
if (ntodo != 0)
sfxge_rx_schedule_refill(rxq, retrying);
if (batch != 0) {
efx_rx_qpost(rxq->common, addr, mblksize, batch,
rxq->completed, rxq->added);
rxq->added += batch;
}
/* Make the descriptors visible to the hardware */
bus_dmamap_sync(rxq->mem.esm_tag, rxq->mem.esm_map,
BUS_DMASYNC_PREWRITE);
efx_rx_qpush(rxq->common, rxq->added);
}