void test_vreinterpretQu64_u8 (void)
{
  uint64x2_t out_uint64x2_t;
  uint8x16_t arg0_uint8x16_t;

  out_uint64x2_t = vreinterpretq_u64_u8 (arg0_uint8x16_t);
}
/* virtio vPMD receive routine, only accept(nb_pkts >= RTE_VIRTIO_DESC_PER_LOOP)
 *
 * This routine is for non-mergeable RX, one desc for each guest buffer.
 * This routine is based on the RX ring layout optimization. Each entry in the
 * avail ring points to the desc with the same index in the desc ring and this
 * will never be changed in the driver.
 *
 * - nb_pkts < RTE_VIRTIO_DESC_PER_LOOP, just return no packet
 */
uint16_t
virtio_recv_pkts_vec(void *rx_queue, struct rte_mbuf **rx_pkts,
	uint16_t nb_pkts)
{
	struct virtnet_rx *rxvq = rx_queue;
	struct virtqueue *vq = rxvq->vq;
	uint16_t nb_used;
	uint16_t desc_idx;
	struct vring_used_elem *rused;
	struct rte_mbuf **sw_ring;
	struct rte_mbuf **sw_ring_end;
	uint16_t nb_pkts_received;

	uint8x16_t shuf_msk1 = {
		0xFF, 0xFF, 0xFF, 0xFF, /* packet type */
		4, 5, 0xFF, 0xFF,       /* pkt len */
		4, 5,                   /* dat len */
		0xFF, 0xFF,             /* vlan tci */
		0xFF, 0xFF, 0xFF, 0xFF
	};

	uint8x16_t shuf_msk2 = {
		0xFF, 0xFF, 0xFF, 0xFF, /* packet type */
		12, 13, 0xFF, 0xFF,     /* pkt len */
		12, 13,                 /* dat len */
		0xFF, 0xFF,             /* vlan tci */
		0xFF, 0xFF, 0xFF, 0xFF
	};

	/* Subtract the header length.
	 *  In which case do we need the header length in used->len ?
	 */
	uint16x8_t len_adjust = {
		0, 0,
		(uint16_t)vq->hw->vtnet_hdr_size, 0,
		(uint16_t)vq->hw->vtnet_hdr_size,
		0,
		0, 0
	};

	if (unlikely(nb_pkts < RTE_VIRTIO_DESC_PER_LOOP))
		return 0;

	nb_used = VIRTQUEUE_NUSED(vq);

	rte_rmb();

	if (unlikely(nb_used == 0))
		return 0;

	nb_pkts = RTE_ALIGN_FLOOR(nb_pkts, RTE_VIRTIO_DESC_PER_LOOP);
	nb_used = RTE_MIN(nb_used, nb_pkts);

	desc_idx = (uint16_t)(vq->vq_used_cons_idx & (vq->vq_nentries - 1));
	rused = &vq->vq_ring.used->ring[desc_idx];
	sw_ring  = &vq->sw_ring[desc_idx];
	sw_ring_end = &vq->sw_ring[vq->vq_nentries];

	rte_prefetch_non_temporal(rused);

	if (vq->vq_free_cnt >= RTE_VIRTIO_VPMD_RX_REARM_THRESH) {
		virtio_rxq_rearm_vec(rxvq);
		if (unlikely(virtqueue_kick_prepare(vq)))
			virtqueue_notify(vq);
	}

	for (nb_pkts_received = 0;
		nb_pkts_received < nb_used;) {
		uint64x2_t desc[RTE_VIRTIO_DESC_PER_LOOP / 2];
		uint64x2_t mbp[RTE_VIRTIO_DESC_PER_LOOP / 2];
		uint64x2_t pkt_mb[RTE_VIRTIO_DESC_PER_LOOP];

		mbp[0] = vld1q_u64((uint64_t *)(sw_ring + 0));
		desc[0] = vld1q_u64((uint64_t *)(rused + 0));
		vst1q_u64((uint64_t *)&rx_pkts[0], mbp[0]);

		mbp[1] = vld1q_u64((uint64_t *)(sw_ring + 2));
		desc[1] = vld1q_u64((uint64_t *)(rused + 2));
		vst1q_u64((uint64_t *)&rx_pkts[2], mbp[1]);

		mbp[2] = vld1q_u64((uint64_t *)(sw_ring + 4));
		desc[2] = vld1q_u64((uint64_t *)(rused + 4));
		vst1q_u64((uint64_t *)&rx_pkts[4], mbp[2]);

		mbp[3] = vld1q_u64((uint64_t *)(sw_ring + 6));
		desc[3] = vld1q_u64((uint64_t *)(rused + 6));
		vst1q_u64((uint64_t *)&rx_pkts[6], mbp[3]);

		pkt_mb[1] = vreinterpretq_u64_u8(vqtbl1q_u8(
				vreinterpretq_u8_u64(desc[0]), shuf_msk2));
		pkt_mb[0] = vreinterpretq_u64_u8(vqtbl1q_u8(
				vreinterpretq_u8_u64(desc[0]), shuf_msk1));
		pkt_mb[1] = vreinterpretq_u64_u16(vsubq_u16(
				vreinterpretq_u16_u64(pkt_mb[1]), len_adjust));
		pkt_mb[0] = vreinterpretq_u64_u16(vsubq_u16(
				vreinterpretq_u16_u64(pkt_mb[0]), len_adjust));
		vst1q_u64((void *)&rx_pkts[1]->rx_descriptor_fields1,
			pkt_mb[1]);
		vst1q_u64((void *)&rx_pkts[0]->rx_descriptor_fields1,
			pkt_mb[0]);

		pkt_mb[3] = vreinterpretq_u64_u8(vqtbl1q_u8(
				vreinterpretq_u8_u64(desc[1]), shuf_msk2));
		pkt_mb[2] = vreinterpretq_u64_u8(vqtbl1q_u8(
				vreinterpretq_u8_u64(desc[1]), shuf_msk1));
		pkt_mb[3] = vreinterpretq_u64_u16(vsubq_u16(
				vreinterpretq_u16_u64(pkt_mb[3]), len_adjust));
		pkt_mb[2] = vreinterpretq_u64_u16(vsubq_u16(
				vreinterpretq_u16_u64(pkt_mb[2]), len_adjust));
		vst1q_u64((void *)&rx_pkts[3]->rx_descriptor_fields1,
			pkt_mb[3]);
		vst1q_u64((void *)&rx_pkts[2]->rx_descriptor_fields1,
			pkt_mb[2]);

		pkt_mb[5] = vreinterpretq_u64_u8(vqtbl1q_u8(
				vreinterpretq_u8_u64(desc[2]), shuf_msk2));
		pkt_mb[4] = vreinterpretq_u64_u8(vqtbl1q_u8(
				vreinterpretq_u8_u64(desc[2]), shuf_msk1));
		pkt_mb[5] = vreinterpretq_u64_u16(vsubq_u16(
				vreinterpretq_u16_u64(pkt_mb[5]), len_adjust));
		pkt_mb[4] = vreinterpretq_u64_u16(vsubq_u16(
				vreinterpretq_u16_u64(pkt_mb[4]), len_adjust));
		vst1q_u64((void *)&rx_pkts[5]->rx_descriptor_fields1,
			pkt_mb[5]);
		vst1q_u64((void *)&rx_pkts[4]->rx_descriptor_fields1,
			pkt_mb[4]);

		pkt_mb[7] = vreinterpretq_u64_u8(vqtbl1q_u8(
				vreinterpretq_u8_u64(desc[3]), shuf_msk2));
		pkt_mb[6] = vreinterpretq_u64_u8(vqtbl1q_u8(
				vreinterpretq_u8_u64(desc[3]), shuf_msk1));
		pkt_mb[7] = vreinterpretq_u64_u16(vsubq_u16(
				vreinterpretq_u16_u64(pkt_mb[7]), len_adjust));
		pkt_mb[6] = vreinterpretq_u64_u16(vsubq_u16(
				vreinterpretq_u16_u64(pkt_mb[6]), len_adjust));
		vst1q_u64((void *)&rx_pkts[7]->rx_descriptor_fields1,
			pkt_mb[7]);
		vst1q_u64((void *)&rx_pkts[6]->rx_descriptor_fields1,
			pkt_mb[6]);

		if (unlikely(nb_used <= RTE_VIRTIO_DESC_PER_LOOP)) {
			if (sw_ring + nb_used <= sw_ring_end)
				nb_pkts_received += nb_used;
			else
				nb_pkts_received += sw_ring_end - sw_ring;
			break;
		} else {
			if (unlikely(sw_ring + RTE_VIRTIO_DESC_PER_LOOP >=
				sw_ring_end)) {
				nb_pkts_received += sw_ring_end - sw_ring;
				break;
			} else {
				nb_pkts_received += RTE_VIRTIO_DESC_PER_LOOP;

				rx_pkts += RTE_VIRTIO_DESC_PER_LOOP;
				sw_ring += RTE_VIRTIO_DESC_PER_LOOP;
				rused   += RTE_VIRTIO_DESC_PER_LOOP;
				nb_used -= RTE_VIRTIO_DESC_PER_LOOP;
			}
		}
	}

	vq->vq_used_cons_idx += nb_pkts_received;
	vq->vq_free_cnt += nb_pkts_received;
	rxvq->stats.packets += nb_pkts_received;
	return nb_pkts_received;
}
예제 #3
0
void vp9_tm_predictor_32x32_neon(uint8_t *dst, ptrdiff_t stride,
                                 const uint8_t *above, const uint8_t *left) {
  int j, k;
  uint16x8_t q0u16, q3u16, q8u16, q9u16, q10u16, q11u16;
  uint8x16_t q0u8, q1u8, q2u8;
  int16x8_t q12s16, q13s16, q14s16, q15s16;
  uint16x4_t d6u16;
  uint8x8_t d0u8, d1u8, d2u8, d3u8, d26u8;

  q0u8 = vld1q_dup_u8(above - 1);
  q1u8 = vld1q_u8(above);
  q2u8 = vld1q_u8(above + 16);
  q8u16 = vsubl_u8(vget_low_u8(q1u8), vget_low_u8(q0u8));
  q9u16 = vsubl_u8(vget_high_u8(q1u8), vget_high_u8(q0u8));
  q10u16 = vsubl_u8(vget_low_u8(q2u8), vget_low_u8(q0u8));
  q11u16 = vsubl_u8(vget_high_u8(q2u8), vget_high_u8(q0u8));
  for (k = 0; k < 4; k++, left += 8) {
    d26u8 = vld1_u8(left);
    q3u16 = vmovl_u8(d26u8);
    d6u16 = vget_low_u16(q3u16);
    for (j = 0; j < 2; j++, d6u16 = vget_high_u16(q3u16)) {
      q0u16 = vdupq_lane_u16(d6u16, 0);
      q12s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q8u16));
      q13s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q9u16));
      q14s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q10u16));
      q15s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q11u16));
      d0u8 = vqmovun_s16(q12s16);
      d1u8 = vqmovun_s16(q13s16);
      d2u8 = vqmovun_s16(q14s16);
      d3u8 = vqmovun_s16(q15s16);
      q0u8 = vcombine_u8(d0u8, d1u8);
      q1u8 = vcombine_u8(d2u8, d3u8);
      vst1q_u64((uint64_t *)dst, vreinterpretq_u64_u8(q0u8));
      vst1q_u64((uint64_t *)(dst + 16), vreinterpretq_u64_u8(q1u8));
      dst += stride;

      q0u16 = vdupq_lane_u16(d6u16, 1);
      q12s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q8u16));
      q13s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q9u16));
      q14s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q10u16));
      q15s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q11u16));
      d0u8 = vqmovun_s16(q12s16);
      d1u8 = vqmovun_s16(q13s16);
      d2u8 = vqmovun_s16(q14s16);
      d3u8 = vqmovun_s16(q15s16);
      q0u8 = vcombine_u8(d0u8, d1u8);
      q1u8 = vcombine_u8(d2u8, d3u8);
      vst1q_u64((uint64_t *)dst, vreinterpretq_u64_u8(q0u8));
      vst1q_u64((uint64_t *)(dst + 16), vreinterpretq_u64_u8(q1u8));
      dst += stride;

      q0u16 = vdupq_lane_u16(d6u16, 2);
      q12s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q8u16));
      q13s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q9u16));
      q14s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q10u16));
      q15s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q11u16));
      d0u8 = vqmovun_s16(q12s16);
      d1u8 = vqmovun_s16(q13s16);
      d2u8 = vqmovun_s16(q14s16);
      d3u8 = vqmovun_s16(q15s16);
      q0u8 = vcombine_u8(d0u8, d1u8);
      q1u8 = vcombine_u8(d2u8, d3u8);
      vst1q_u64((uint64_t *)dst, vreinterpretq_u64_u8(q0u8));
      vst1q_u64((uint64_t *)(dst + 16), vreinterpretq_u64_u8(q1u8));
      dst += stride;

      q0u16 = vdupq_lane_u16(d6u16, 3);
      q12s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q8u16));
      q13s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q9u16));
      q14s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q10u16));
      q15s16 = vaddq_s16(vreinterpretq_s16_u16(q0u16),
                         vreinterpretq_s16_u16(q11u16));
      d0u8 = vqmovun_s16(q12s16);
      d1u8 = vqmovun_s16(q13s16);
      d2u8 = vqmovun_s16(q14s16);
      d3u8 = vqmovun_s16(q15s16);
      q0u8 = vcombine_u8(d0u8, d1u8);
      q1u8 = vcombine_u8(d2u8, d3u8);
      vst1q_u64((uint64_t *)dst, vreinterpretq_u64_u8(q0u8));
      vst1q_u64((uint64_t *)(dst + 16), vreinterpretq_u64_u8(q1u8));
      dst += stride;
    }
  }
}