From f8c97babc9f4d0ac5ac0cb8865bcaac035478c45 Mon Sep 17 00:00:00 2001 From: Matan Azrad Date: Wed, 20 Jan 2021 11:29:32 +0000 Subject: [PATCH] compress/mlx5: add data-path functions Add implementation for the next compress data-path functions: - dequeue_burst - enqueue_burst Add the next operation for starting \ stopping data-path: - dev_stop - dev_close Each compress API enqueued operation is translated to a WQE. Once WQE is done, the HW sends CQE to the CQ, when SW see the CQE the operation will be updated and dequeued. Signed-off-by: Matan Azrad Acked-by: Viacheslav Ovsiienko --- drivers/compress/mlx5/mlx5_compress.c | 218 +++++++++++++++++++++++++- 1 file changed, 214 insertions(+), 4 deletions(-) diff --git a/drivers/compress/mlx5/mlx5_compress.c b/drivers/compress/mlx5/mlx5_compress.c index 467b80a996..4be672eb16 100644 --- a/drivers/compress/mlx5/mlx5_compress.c +++ b/drivers/compress/mlx5/mlx5_compress.c @@ -348,10 +348,23 @@ mlx5_compress_xform_create(struct rte_compressdev *dev, return -ENOTSUP; } +static void +mlx5_compress_dev_stop(struct rte_compressdev *dev) +{ + RTE_SET_USED(dev); +} + +static int +mlx5_compress_dev_start(struct rte_compressdev *dev) +{ + RTE_SET_USED(dev); + return 0; +} + static struct rte_compressdev_ops mlx5_compress_ops = { .dev_configure = mlx5_compress_dev_configure, - .dev_start = NULL, - .dev_stop = NULL, + .dev_start = mlx5_compress_dev_start, + .dev_stop = mlx5_compress_dev_stop, .dev_close = mlx5_compress_dev_close, .dev_infos_get = mlx5_compress_dev_info_get, .stats_get = NULL, @@ -364,6 +377,203 @@ static struct rte_compressdev_ops mlx5_compress_ops = { .stream_free = NULL, }; +static __rte_always_inline uint32_t +mlx5_compress_dseg_set(struct mlx5_compress_qp *qp, + volatile struct mlx5_wqe_dseg *restrict dseg, + struct rte_mbuf *restrict mbuf, + uint32_t offset, uint32_t len) +{ + uintptr_t addr = rte_pktmbuf_mtod_offset(mbuf, uintptr_t, offset); + + dseg->bcount = rte_cpu_to_be_32(len); + dseg->lkey = mlx5_mr_addr2mr_bh(qp->priv->pd, 0, &qp->priv->mr_scache, + &qp->mr_ctrl, addr, + !!(mbuf->ol_flags & EXT_ATTACHED_MBUF)); + dseg->pbuf = rte_cpu_to_be_64(addr); + return dseg->lkey; +} + +static uint16_t +mlx5_compress_enqueue_burst(void *queue_pair, struct rte_comp_op **ops, + uint16_t nb_ops) +{ + struct mlx5_compress_qp *qp = queue_pair; + volatile struct mlx5_gga_wqe *wqes = (volatile struct mlx5_gga_wqe *) + qp->sq.wqes, *wqe; + struct mlx5_compress_xform *xform; + struct rte_comp_op *op; + uint16_t mask = qp->entries_n - 1; + uint16_t remain = qp->entries_n - (qp->pi - qp->ci); + uint16_t idx; + bool invalid; + + if (remain < nb_ops) + nb_ops = remain; + else + remain = nb_ops; + if (unlikely(remain == 0)) + return 0; + do { + idx = qp->pi & mask; + wqe = &wqes[idx]; + rte_prefetch0(&wqes[(qp->pi + 1) & mask]); + op = *ops++; + xform = op->private_xform; + /* + * Check operation arguments and error cases: + * - Operation type must be state-less. + * - Compress operation flush flag must be FULL or FINAL. + * - Source and destination buffers must be mapped internally. + */ + invalid = op->op_type != RTE_COMP_OP_STATELESS || + (xform->type == RTE_COMP_COMPRESS && + op->flush_flag < RTE_COMP_FLUSH_FULL); + if (unlikely(invalid || + (mlx5_compress_dseg_set(qp, &wqe->gather, + op->m_src, + op->src.offset, + op->src.length) == + UINT32_MAX) || + (mlx5_compress_dseg_set(qp, &wqe->scatter, + op->m_dst, + op->dst.offset, + rte_pktmbuf_pkt_len(op->m_dst) - + op->dst.offset) == + UINT32_MAX))) { + op->status = invalid ? RTE_COMP_OP_STATUS_INVALID_ARGS : + RTE_COMP_OP_STATUS_ERROR; + nb_ops -= remain; + if (unlikely(nb_ops == 0)) + return 0; + break; + } + wqe->gga_ctrl1 = xform->gga_ctrl1; + wqe->opcode = rte_cpu_to_be_32(xform->opcode + (qp->pi << 8)); + qp->ops[idx] = op; + qp->pi++; + } while (--remain); + rte_io_wmb(); + qp->sq.db_rec[MLX5_SND_DBR] = rte_cpu_to_be_32(qp->pi); + rte_wmb(); + *qp->uar_addr = *(volatile uint64_t *)wqe; /* Assume 64 bit ARCH.*/ + rte_wmb(); + return nb_ops; +} + +static void +mlx5_compress_dump_err_objs(volatile uint32_t *cqe, volatile uint32_t *wqe, + volatile uint32_t *opaq) +{ + size_t i; + + DRV_LOG(ERR, "Error cqe:"); + for (i = 0; i < sizeof(struct mlx5_err_cqe) >> 2; i += 4) + DRV_LOG(ERR, "%08X %08X %08X %08X", cqe[i], cqe[i + 1], + cqe[i + 2], cqe[i + 3]); + DRV_LOG(ERR, "\nError wqe:"); + for (i = 0; i < sizeof(struct mlx5_gga_wqe) >> 2; i += 4) + DRV_LOG(ERR, "%08X %08X %08X %08X", wqe[i], wqe[i + 1], + wqe[i + 2], wqe[i + 3]); + DRV_LOG(ERR, "\nError opaq:"); + for (i = 0; i < sizeof(struct mlx5_gga_compress_opaque) >> 2; i += 4) + DRV_LOG(ERR, "%08X %08X %08X %08X", opaq[i], opaq[i + 1], + opaq[i + 2], opaq[i + 3]); +} + +static void +mlx5_compress_cqe_err_handle(struct mlx5_compress_qp *qp, + struct rte_comp_op *op) +{ + const uint32_t idx = qp->ci & (qp->entries_n - 1); + volatile struct mlx5_err_cqe *cqe = (volatile struct mlx5_err_cqe *) + &qp->cq.cqes[idx]; + volatile struct mlx5_gga_wqe *wqes = (volatile struct mlx5_gga_wqe *) + qp->sq.wqes; + volatile struct mlx5_gga_compress_opaque *opaq = qp->opaque_mr.addr; + + op->status = RTE_COMP_OP_STATUS_ERROR; + op->consumed = 0; + op->produced = 0; + op->output_chksum = 0; + op->debug_status = rte_be_to_cpu_32(opaq[idx].syndrom) | + ((uint64_t)rte_be_to_cpu_32(cqe->syndrome) << 32); + mlx5_compress_dump_err_objs((volatile uint32_t *)cqe, + (volatile uint32_t *)&wqes[idx], + (volatile uint32_t *)&opaq[idx]); +} + +static uint16_t +mlx5_compress_dequeue_burst(void *queue_pair, struct rte_comp_op **ops, + uint16_t nb_ops) +{ + struct mlx5_compress_qp *qp = queue_pair; + volatile struct mlx5_compress_xform *restrict xform; + volatile struct mlx5_cqe *restrict cqe; + volatile struct mlx5_gga_compress_opaque *opaq = qp->opaque_mr.addr; + struct rte_comp_op *restrict op; + const unsigned int cq_size = qp->entries_n; + const unsigned int mask = cq_size - 1; + uint32_t idx; + uint32_t next_idx = qp->ci & mask; + const uint16_t max = RTE_MIN((uint16_t)(qp->pi - qp->ci), nb_ops); + uint16_t i = 0; + int ret; + + if (unlikely(max == 0)) + return 0; + do { + idx = next_idx; + next_idx = (qp->ci + 1) & mask; + rte_prefetch0(&qp->cq.cqes[next_idx]); + rte_prefetch0(qp->ops[next_idx]); + op = qp->ops[idx]; + cqe = &qp->cq.cqes[idx]; + ret = check_cqe(cqe, cq_size, qp->ci); + /* + * Be sure owner read is done before any other cookie field or + * opaque field. + */ + rte_io_rmb(); + if (unlikely(ret != MLX5_CQE_STATUS_SW_OWN)) { + if (likely(ret == MLX5_CQE_STATUS_HW_OWN)) + break; + mlx5_compress_cqe_err_handle(qp, op); + } else { + xform = op->private_xform; + op->status = RTE_COMP_OP_STATUS_SUCCESS; + op->consumed = op->src.length; + op->produced = rte_be_to_cpu_32(cqe->byte_cnt); + MLX5_ASSERT(cqe->byte_cnt == + qp->opaque_buf[idx].scattered_length); + switch (xform->csum_type) { + case RTE_COMP_CHECKSUM_CRC32: + op->output_chksum = (uint64_t)rte_be_to_cpu_32 + (opaq[idx].crc32); + break; + case RTE_COMP_CHECKSUM_ADLER32: + op->output_chksum = (uint64_t)rte_be_to_cpu_32 + (opaq[idx].adler32) << 32; + break; + case RTE_COMP_CHECKSUM_CRC32_ADLER32: + op->output_chksum = (uint64_t)rte_be_to_cpu_32 + (opaq[idx].crc32) | + ((uint64_t)rte_be_to_cpu_32 + (opaq[idx].adler32) << 32); + break; + default: + break; + } + } + ops[i++] = op; + qp->ci++; + } while (i < max); + if (likely(i != 0)) { + rte_io_wmb(); + qp->cq.db_rec[0] = rte_cpu_to_be_32(qp->ci); + } + return i; +} + static struct ibv_device * mlx5_compress_get_ib_device_match(struct rte_pci_addr *addr) { @@ -520,8 +730,8 @@ mlx5_compress_pci_probe(struct rte_pci_driver *pci_drv, DRV_LOG(INFO, "Compress device %s was created successfully.", ibv->name); cdev->dev_ops = &mlx5_compress_ops; - cdev->dequeue_burst = NULL; - cdev->enqueue_burst = NULL; + cdev->dequeue_burst = mlx5_compress_dequeue_burst; + cdev->enqueue_burst = mlx5_compress_enqueue_burst; cdev->feature_flags = RTE_COMPDEV_FF_HW_ACCELERATED; priv = cdev->data->dev_private; priv->ctx = ctx;