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qed: Chain support for external PBL
iWARP would require the chains to allocate/free their PBL memory independently, so add the infrastructure to provide it externally. Signed-off-by: Yuval Mintz <Yuval.Mintz@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
8917a777be
commit
1a4a69751f
10 changed files with 56 additions and 28 deletions
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@ -276,7 +276,7 @@ static int qedr_alloc_resources(struct qedr_dev *dev)
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QED_CHAIN_CNT_TYPE_U16,
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n_entries,
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sizeof(struct regpair *),
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&cnq->pbl);
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&cnq->pbl, NULL);
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if (rc)
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goto err4;
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@ -925,7 +925,7 @@ struct ib_cq *qedr_create_cq(struct ib_device *ibdev,
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QED_CHAIN_CNT_TYPE_U32,
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chain_entries,
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sizeof(union rdma_cqe),
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&cq->pbl);
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&cq->pbl, NULL);
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if (rc)
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goto err1;
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@ -1413,7 +1413,7 @@ qedr_roce_create_kernel_qp(struct qedr_dev *dev,
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QED_CHAIN_CNT_TYPE_U32,
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n_sq_elems,
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QEDR_SQE_ELEMENT_SIZE,
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&qp->sq.pbl);
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&qp->sq.pbl, NULL);
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if (rc)
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return rc;
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@ -1427,7 +1427,7 @@ qedr_roce_create_kernel_qp(struct qedr_dev *dev,
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QED_CHAIN_CNT_TYPE_U32,
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n_rq_elems,
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QEDR_RQE_ELEMENT_SIZE,
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&qp->rq.pbl);
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&qp->rq.pbl, NULL);
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if (rc)
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return rc;
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@ -3075,12 +3075,15 @@ static void qed_chain_free_pbl(struct qed_dev *cdev, struct qed_chain *p_chain)
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}
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pbl_size = page_cnt * QED_CHAIN_PBL_ENTRY_SIZE;
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dma_free_coherent(&cdev->pdev->dev,
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pbl_size,
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p_chain->pbl_sp.p_virt_table,
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p_chain->pbl_sp.p_phys_table);
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if (!p_chain->b_external_pbl)
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dma_free_coherent(&cdev->pdev->dev,
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pbl_size,
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p_chain->pbl_sp.p_virt_table,
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p_chain->pbl_sp.p_phys_table);
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out:
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vfree(p_chain->pbl.pp_virt_addr_tbl);
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p_chain->pbl.pp_virt_addr_tbl = NULL;
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}
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void qed_chain_free(struct qed_dev *cdev, struct qed_chain *p_chain)
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@ -3174,7 +3177,10 @@ qed_chain_alloc_single(struct qed_dev *cdev, struct qed_chain *p_chain)
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return 0;
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}
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static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *p_chain)
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static int
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qed_chain_alloc_pbl(struct qed_dev *cdev,
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struct qed_chain *p_chain,
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struct qed_chain_ext_pbl *ext_pbl)
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{
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u32 page_cnt = p_chain->page_cnt, size, i;
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dma_addr_t p_phys = 0, p_pbl_phys = 0;
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@ -3194,8 +3200,16 @@ static int qed_chain_alloc_pbl(struct qed_dev *cdev, struct qed_chain *p_chain)
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* should be saved to allow its freeing during the error flow.
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*/
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size = page_cnt * QED_CHAIN_PBL_ENTRY_SIZE;
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p_pbl_virt = dma_alloc_coherent(&cdev->pdev->dev,
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size, &p_pbl_phys, GFP_KERNEL);
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if (!ext_pbl) {
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p_pbl_virt = dma_alloc_coherent(&cdev->pdev->dev,
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size, &p_pbl_phys, GFP_KERNEL);
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} else {
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p_pbl_virt = ext_pbl->p_pbl_virt;
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p_pbl_phys = ext_pbl->p_pbl_phys;
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p_chain->b_external_pbl = true;
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}
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qed_chain_init_pbl_mem(p_chain, p_pbl_virt, p_pbl_phys,
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pp_virt_addr_tbl);
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if (!p_pbl_virt)
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@ -3228,7 +3242,10 @@ int qed_chain_alloc(struct qed_dev *cdev,
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enum qed_chain_use_mode intended_use,
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enum qed_chain_mode mode,
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enum qed_chain_cnt_type cnt_type,
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u32 num_elems, size_t elem_size, struct qed_chain *p_chain)
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u32 num_elems,
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size_t elem_size,
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struct qed_chain *p_chain,
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struct qed_chain_ext_pbl *ext_pbl)
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{
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u32 page_cnt;
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int rc = 0;
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@ -3259,7 +3276,7 @@ int qed_chain_alloc(struct qed_dev *cdev,
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rc = qed_chain_alloc_single(cdev, p_chain);
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break;
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case QED_CHAIN_MODE_PBL:
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rc = qed_chain_alloc_pbl(cdev, p_chain);
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rc = qed_chain_alloc_pbl(cdev, p_chain, ext_pbl);
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break;
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}
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if (rc)
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@ -307,6 +307,7 @@ int qed_dmae_host2host(struct qed_hwfn *p_hwfn,
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* @param num_elems
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* @param elem_size
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* @param p_chain
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* @param ext_pbl - a possible external PBL
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*
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* @return int
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*/
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@ -315,7 +316,9 @@ qed_chain_alloc(struct qed_dev *cdev,
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enum qed_chain_use_mode intended_use,
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enum qed_chain_mode mode,
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enum qed_chain_cnt_type cnt_type,
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u32 num_elems, size_t elem_size, struct qed_chain *p_chain);
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u32 num_elems,
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size_t elem_size,
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struct qed_chain *p_chain, struct qed_chain_ext_pbl *ext_pbl);
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/**
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* @brief qed_chain_free - Free chain DMA memory
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@ -752,7 +752,7 @@ static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
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QED_CHAIN_USE_TO_CONSUME_PRODUCE,
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QED_CHAIN_MODE_PBL,
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QED_CHAIN_CNT_TYPE_U16,
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r2tq_num_elements, 0x80, &p_conn->r2tq);
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r2tq_num_elements, 0x80, &p_conn->r2tq, NULL);
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if (rc)
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goto nomem_r2tq;
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@ -763,7 +763,7 @@ static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
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QED_CHAIN_MODE_PBL,
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QED_CHAIN_CNT_TYPE_U16,
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uhq_num_elements,
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sizeof(struct iscsi_uhqe), &p_conn->uhq);
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sizeof(struct iscsi_uhqe), &p_conn->uhq, NULL);
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if (rc)
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goto nomem_uhq;
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@ -773,7 +773,7 @@ static int qed_iscsi_allocate_connection(struct qed_hwfn *p_hwfn,
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QED_CHAIN_MODE_PBL,
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QED_CHAIN_CNT_TYPE_U16,
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xhq_num_elements,
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sizeof(struct iscsi_xhqe), &p_conn->xhq);
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sizeof(struct iscsi_xhqe), &p_conn->xhq, NULL);
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if (rc)
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goto nomem;
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@ -1056,7 +1056,7 @@ qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn,
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QED_CHAIN_CNT_TYPE_U16,
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p_ll2_info->input.rx_num_desc,
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sizeof(struct core_rx_bd),
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&p_ll2_info->rx_queue.rxq_chain);
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&p_ll2_info->rx_queue.rxq_chain, NULL);
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if (rc) {
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DP_NOTICE(p_hwfn, "Failed to allocate ll2 rxq chain\n");
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goto out;
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@ -1078,7 +1078,7 @@ qed_ll2_acquire_connection_rx(struct qed_hwfn *p_hwfn,
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QED_CHAIN_CNT_TYPE_U16,
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p_ll2_info->input.rx_num_desc,
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sizeof(struct core_rx_fast_path_cqe),
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&p_ll2_info->rx_queue.rcq_chain);
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&p_ll2_info->rx_queue.rcq_chain, NULL);
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if (rc) {
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DP_NOTICE(p_hwfn, "Failed to allocate ll2 rcq chain\n");
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goto out;
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@ -1108,7 +1108,7 @@ static int qed_ll2_acquire_connection_tx(struct qed_hwfn *p_hwfn,
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QED_CHAIN_CNT_TYPE_U16,
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p_ll2_info->input.tx_num_desc,
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sizeof(struct core_tx_bd),
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&p_ll2_info->tx_queue.txq_chain);
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&p_ll2_info->tx_queue.txq_chain, NULL);
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if (rc)
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goto out;
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@ -419,7 +419,7 @@ int qed_eq_alloc(struct qed_hwfn *p_hwfn, u16 num_elem)
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QED_CHAIN_CNT_TYPE_U16,
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num_elem,
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sizeof(union event_ring_element),
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&p_eq->chain))
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&p_eq->chain, NULL))
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goto eq_allocate_fail;
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/* register EQ completion on the SP SB */
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@ -547,7 +547,7 @@ int qed_spq_alloc(struct qed_hwfn *p_hwfn)
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QED_CHAIN_CNT_TYPE_U16,
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0, /* N/A when the mode is SINGLE */
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sizeof(struct slow_path_element),
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&p_spq->chain))
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&p_spq->chain, NULL))
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goto spq_allocate_fail;
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/* allocate and fill the SPQ elements (incl. ramrod data list) */
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@ -953,7 +953,7 @@ int qed_consq_alloc(struct qed_hwfn *p_hwfn)
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QED_CHAIN_MODE_PBL,
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QED_CHAIN_CNT_TYPE_U16,
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QED_CHAIN_PAGE_SIZE / 0x80,
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0x80, &p_consq->chain))
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0x80, &p_consq->chain, NULL))
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goto consq_allocate_fail;
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p_hwfn->p_consq = p_consq;
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@ -1317,8 +1317,7 @@ static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
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QED_CHAIN_CNT_TYPE_U16,
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RX_RING_SIZE,
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sizeof(struct eth_rx_bd),
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&rxq->rx_bd_ring);
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&rxq->rx_bd_ring, NULL);
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if (rc)
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goto err;
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@ -1329,7 +1328,7 @@ static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
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QED_CHAIN_CNT_TYPE_U16,
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RX_RING_SIZE,
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sizeof(union eth_rx_cqe),
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&rxq->rx_comp_ring);
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&rxq->rx_comp_ring, NULL);
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if (rc)
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goto err;
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@ -1387,7 +1386,8 @@ static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
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QED_CHAIN_MODE_PBL,
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QED_CHAIN_CNT_TYPE_U16,
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txq->num_tx_buffers,
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sizeof(*p_virt), &txq->tx_pbl);
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sizeof(*p_virt),
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&txq->tx_pbl, NULL);
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if (rc)
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goto err;
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@ -80,6 +80,11 @@ struct qed_chain_pbl_u32 {
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u32 cons_page_idx;
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};
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struct qed_chain_ext_pbl {
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dma_addr_t p_pbl_phys;
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void *p_pbl_virt;
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};
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struct qed_chain_u16 {
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/* Cyclic index of next element to produce/consme */
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u16 prod_idx;
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@ -155,6 +160,8 @@ struct qed_chain {
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u32 size;
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u8 intended_use;
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bool b_external_pbl;
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};
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#define QED_CHAIN_PBL_ENTRY_SIZE (8)
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@ -634,7 +634,8 @@ struct qed_common_ops {
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enum qed_chain_cnt_type cnt_type,
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u32 num_elems,
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size_t elem_size,
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struct qed_chain *p_chain);
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struct qed_chain *p_chain,
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struct qed_chain_ext_pbl *ext_pbl);
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void (*chain_free)(struct qed_dev *cdev,
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struct qed_chain *p_chain);
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