qedr: Add support for data path

Implement fastpath verbs like ib_send_post, ib_post_recv and ib_poll_cq.

Signed-off-by: Rajesh Borundia <rajesh.borundia@cavium.com>
Signed-off-by: Ram Amrani <Ram.Amrani@cavium.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

drivers/infiniband/hw/qedr/main.c

@@ -102,7 +102,10 @@ static int qedr_register_device(struct qedr_dev *dev)
 				     QEDR_UVERBS(QUERY_QP) |
 				     QEDR_UVERBS(DESTROY_QP) |
 				     QEDR_UVERBS(REG_MR) |
-				     QEDR_UVERBS(DEREG_MR);
+				     QEDR_UVERBS(DEREG_MR) |
+				     QEDR_UVERBS(POLL_CQ) |
+				     QEDR_UVERBS(POST_SEND) |
+				     QEDR_UVERBS(POST_RECV);
 
 	dev->ibdev.phys_port_cnt = 1;
 	dev->ibdev.num_comp_vectors = dev->num_cnq;
@@ -141,6 +144,10 @@ static int qedr_register_device(struct qedr_dev *dev)
 	dev->ibdev.alloc_mr = qedr_alloc_mr;
 	dev->ibdev.map_mr_sg = qedr_map_mr_sg;
 
+	dev->ibdev.poll_cq = qedr_poll_cq;
+	dev->ibdev.post_send = qedr_post_send;
+	dev->ibdev.post_recv = qedr_post_recv;
+
 	dev->ibdev.dma_device = &dev->pdev->dev;
 
 	dev->ibdev.get_link_layer = qedr_link_layer;

drivers/infiniband/hw/qedr/qedr.h

@@ -410,6 +410,25 @@ struct qedr_mr {
 	u32 npages;
 };
 
+#define SET_FIELD2(value, name, flag) ((value) |= ((flag) << (name ## _SHIFT)))
+
+#define QEDR_RESP_IMM	(RDMA_CQE_RESPONDER_IMM_FLG_MASK << \
+			 RDMA_CQE_RESPONDER_IMM_FLG_SHIFT)
+#define QEDR_RESP_RDMA	(RDMA_CQE_RESPONDER_RDMA_FLG_MASK << \
+			 RDMA_CQE_RESPONDER_RDMA_FLG_SHIFT)
+#define QEDR_RESP_RDMA_IMM (QEDR_RESP_IMM | QEDR_RESP_RDMA)
+
+static inline void qedr_inc_sw_cons(struct qedr_qp_hwq_info *info)
+{
+	info->cons = (info->cons + 1) % info->max_wr;
+	info->wqe_cons++;
+}
+
+static inline void qedr_inc_sw_prod(struct qedr_qp_hwq_info *info)
+{
+	info->prod = (info->prod + 1) % info->max_wr;
+}
+
 static inline int qedr_get_dmac(struct qedr_dev *dev,
 				struct ib_ah_attr *ah_attr, u8 *mac_addr)
 {

drivers/infiniband/hw/qedr/qedr_hsi_rdma.h

@@ -150,6 +150,12 @@ struct rdma_rq_sge {
 	struct regpair addr;
 	__le32 length;
 	__le32 flags;
+#define RDMA_RQ_SGE_L_KEY_MASK      0x3FFFFFF
+#define RDMA_RQ_SGE_L_KEY_SHIFT     0
+#define RDMA_RQ_SGE_NUM_SGES_MASK   0x7
+#define RDMA_RQ_SGE_NUM_SGES_SHIFT  26
+#define RDMA_RQ_SGE_RESERVED0_MASK  0x7
+#define RDMA_RQ_SGE_RESERVED0_SHIFT 29
 };
 
 struct rdma_srq_sge {
@@ -183,4 +189,560 @@ struct rdma_pwm_val32_data {
 	__le32 value;
 };
 
+/* DIF Block size options */
+enum rdma_dif_block_size {
+	RDMA_DIF_BLOCK_512 = 0,
+	RDMA_DIF_BLOCK_4096 = 1,
+	MAX_RDMA_DIF_BLOCK_SIZE
+};
+
+/* DIF CRC initial value */
+enum rdma_dif_crc_seed {
+	RDMA_DIF_CRC_SEED_0000 = 0,
+	RDMA_DIF_CRC_SEED_FFFF = 1,
+	MAX_RDMA_DIF_CRC_SEED
+};
+
+/* RDMA DIF Error Result Structure */
+struct rdma_dif_error_result {
+	__le32 error_intervals;
+	__le32 dif_error_1st_interval;
+	u8 flags;
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_CRC_MASK      0x1
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_CRC_SHIFT     0
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_APP_TAG_MASK  0x1
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_APP_TAG_SHIFT 1
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_REF_TAG_MASK  0x1
+#define RDMA_DIF_ERROR_RESULT_DIF_ERROR_TYPE_REF_TAG_SHIFT 2
+#define RDMA_DIF_ERROR_RESULT_RESERVED0_MASK               0xF
+#define RDMA_DIF_ERROR_RESULT_RESERVED0_SHIFT              3
+#define RDMA_DIF_ERROR_RESULT_TOGGLE_BIT_MASK              0x1
+#define RDMA_DIF_ERROR_RESULT_TOGGLE_BIT_SHIFT             7
+	u8 reserved1[55];
+};
+
+/* DIF IO direction */
+enum rdma_dif_io_direction_flg {
+	RDMA_DIF_DIR_RX = 0,
+	RDMA_DIF_DIR_TX = 1,
+	MAX_RDMA_DIF_IO_DIRECTION_FLG
+};
+
+/* RDMA DIF Runt Result Structure */
+struct rdma_dif_runt_result {
+	__le16 guard_tag;
+	__le16 reserved[3];
+};
+
+/* Memory window type enumeration */
+enum rdma_mw_type {
+	RDMA_MW_TYPE_1,
+	RDMA_MW_TYPE_2A,
+	MAX_RDMA_MW_TYPE
+};
+
+struct rdma_sq_atomic_wqe {
+	__le32 reserved1;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_ATOMIC_WQE_COMP_FLG_MASK         0x1
+#define RDMA_SQ_ATOMIC_WQE_COMP_FLG_SHIFT        0
+#define RDMA_SQ_ATOMIC_WQE_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_ATOMIC_WQE_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_ATOMIC_WQE_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_ATOMIC_WQE_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_ATOMIC_WQE_SE_FLG_MASK           0x1
+#define RDMA_SQ_ATOMIC_WQE_SE_FLG_SHIFT          3
+#define RDMA_SQ_ATOMIC_WQE_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_ATOMIC_WQE_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_ATOMIC_WQE_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_ATOMIC_WQE_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_ATOMIC_WQE_RESERVED0_MASK        0x3
+#define RDMA_SQ_ATOMIC_WQE_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	struct regpair remote_va;
+	__le32 r_key;
+	__le32 reserved2;
+	struct regpair cmp_data;
+	struct regpair swap_data;
+};
+
+/* First element (16 bytes) of atomic wqe */
+struct rdma_sq_atomic_wqe_1st {
+	__le32 reserved1;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_ATOMIC_WQE_1ST_COMP_FLG_MASK       0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_COMP_FLG_SHIFT      0
+#define RDMA_SQ_ATOMIC_WQE_1ST_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_ATOMIC_WQE_1ST_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_ATOMIC_WQE_1ST_SE_FLG_MASK         0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_SE_FLG_SHIFT        3
+#define RDMA_SQ_ATOMIC_WQE_1ST_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_ATOMIC_WQE_1ST_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_ATOMIC_WQE_1ST_RESERVED0_MASK      0x7
+#define RDMA_SQ_ATOMIC_WQE_1ST_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+/* Second element (16 bytes) of atomic wqe */
+struct rdma_sq_atomic_wqe_2nd {
+	struct regpair remote_va;
+	__le32 r_key;
+	__le32 reserved2;
+};
+
+/* Third element (16 bytes) of atomic wqe */
+struct rdma_sq_atomic_wqe_3rd {
+	struct regpair cmp_data;
+	struct regpair swap_data;
+};
+
+struct rdma_sq_bind_wqe {
+	struct regpair addr;
+	__le32 l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_BIND_WQE_COMP_FLG_MASK       0x1
+#define RDMA_SQ_BIND_WQE_COMP_FLG_SHIFT      0
+#define RDMA_SQ_BIND_WQE_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_BIND_WQE_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_BIND_WQE_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_BIND_WQE_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_BIND_WQE_SE_FLG_MASK         0x1
+#define RDMA_SQ_BIND_WQE_SE_FLG_SHIFT        3
+#define RDMA_SQ_BIND_WQE_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_BIND_WQE_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_BIND_WQE_RESERVED0_MASK      0x7
+#define RDMA_SQ_BIND_WQE_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	u8 bind_ctrl;
+#define RDMA_SQ_BIND_WQE_ZERO_BASED_MASK     0x1
+#define RDMA_SQ_BIND_WQE_ZERO_BASED_SHIFT    0
+#define RDMA_SQ_BIND_WQE_MW_TYPE_MASK        0x1
+#define RDMA_SQ_BIND_WQE_MW_TYPE_SHIFT       1
+#define RDMA_SQ_BIND_WQE_RESERVED1_MASK      0x3F
+#define RDMA_SQ_BIND_WQE_RESERVED1_SHIFT     2
+	u8 access_ctrl;
+#define RDMA_SQ_BIND_WQE_REMOTE_READ_MASK    0x1
+#define RDMA_SQ_BIND_WQE_REMOTE_READ_SHIFT   0
+#define RDMA_SQ_BIND_WQE_REMOTE_WRITE_MASK   0x1
+#define RDMA_SQ_BIND_WQE_REMOTE_WRITE_SHIFT  1
+#define RDMA_SQ_BIND_WQE_ENABLE_ATOMIC_MASK  0x1
+#define RDMA_SQ_BIND_WQE_ENABLE_ATOMIC_SHIFT 2
+#define RDMA_SQ_BIND_WQE_LOCAL_READ_MASK     0x1
+#define RDMA_SQ_BIND_WQE_LOCAL_READ_SHIFT    3
+#define RDMA_SQ_BIND_WQE_LOCAL_WRITE_MASK    0x1
+#define RDMA_SQ_BIND_WQE_LOCAL_WRITE_SHIFT   4
+#define RDMA_SQ_BIND_WQE_RESERVED2_MASK      0x7
+#define RDMA_SQ_BIND_WQE_RESERVED2_SHIFT     5
+	u8 reserved3;
+	u8 length_hi;
+	__le32 length_lo;
+	__le32 parent_l_key;
+	__le32 reserved4;
+};
+
+/* First element (16 bytes) of bind wqe */
+struct rdma_sq_bind_wqe_1st {
+	struct regpair addr;
+	__le32 l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_BIND_WQE_1ST_COMP_FLG_MASK       0x1
+#define RDMA_SQ_BIND_WQE_1ST_COMP_FLG_SHIFT      0
+#define RDMA_SQ_BIND_WQE_1ST_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_BIND_WQE_1ST_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_BIND_WQE_1ST_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_BIND_WQE_1ST_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_BIND_WQE_1ST_SE_FLG_MASK         0x1
+#define RDMA_SQ_BIND_WQE_1ST_SE_FLG_SHIFT        3
+#define RDMA_SQ_BIND_WQE_1ST_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_BIND_WQE_1ST_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_BIND_WQE_1ST_RESERVED0_MASK      0x7
+#define RDMA_SQ_BIND_WQE_1ST_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+/* Second element (16 bytes) of bind wqe */
+struct rdma_sq_bind_wqe_2nd {
+	u8 bind_ctrl;
+#define RDMA_SQ_BIND_WQE_2ND_ZERO_BASED_MASK     0x1
+#define RDMA_SQ_BIND_WQE_2ND_ZERO_BASED_SHIFT    0
+#define RDMA_SQ_BIND_WQE_2ND_MW_TYPE_MASK        0x1
+#define RDMA_SQ_BIND_WQE_2ND_MW_TYPE_SHIFT       1
+#define RDMA_SQ_BIND_WQE_2ND_RESERVED1_MASK      0x3F
+#define RDMA_SQ_BIND_WQE_2ND_RESERVED1_SHIFT     2
+	u8 access_ctrl;
+#define RDMA_SQ_BIND_WQE_2ND_REMOTE_READ_MASK    0x1
+#define RDMA_SQ_BIND_WQE_2ND_REMOTE_READ_SHIFT   0
+#define RDMA_SQ_BIND_WQE_2ND_REMOTE_WRITE_MASK   0x1
+#define RDMA_SQ_BIND_WQE_2ND_REMOTE_WRITE_SHIFT  1
+#define RDMA_SQ_BIND_WQE_2ND_ENABLE_ATOMIC_MASK  0x1
+#define RDMA_SQ_BIND_WQE_2ND_ENABLE_ATOMIC_SHIFT 2
+#define RDMA_SQ_BIND_WQE_2ND_LOCAL_READ_MASK     0x1
+#define RDMA_SQ_BIND_WQE_2ND_LOCAL_READ_SHIFT    3
+#define RDMA_SQ_BIND_WQE_2ND_LOCAL_WRITE_MASK    0x1
+#define RDMA_SQ_BIND_WQE_2ND_LOCAL_WRITE_SHIFT   4
+#define RDMA_SQ_BIND_WQE_2ND_RESERVED2_MASK      0x7
+#define RDMA_SQ_BIND_WQE_2ND_RESERVED2_SHIFT     5
+	u8 reserved3;
+	u8 length_hi;
+	__le32 length_lo;
+	__le32 parent_l_key;
+	__le32 reserved4;
+};
+
+/* Structure with only the SQ WQE common
+ * fields. Size is of one SQ element (16B)
+ */
+struct rdma_sq_common_wqe {
+	__le32 reserved1[3];
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_COMMON_WQE_COMP_FLG_MASK       0x1
+#define RDMA_SQ_COMMON_WQE_COMP_FLG_SHIFT      0
+#define RDMA_SQ_COMMON_WQE_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_COMMON_WQE_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_COMMON_WQE_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_COMMON_WQE_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_COMMON_WQE_SE_FLG_MASK         0x1
+#define RDMA_SQ_COMMON_WQE_SE_FLG_SHIFT        3
+#define RDMA_SQ_COMMON_WQE_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_COMMON_WQE_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_COMMON_WQE_RESERVED0_MASK      0x7
+#define RDMA_SQ_COMMON_WQE_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+struct rdma_sq_fmr_wqe {
+	struct regpair addr;
+	__le32 l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_FMR_WQE_COMP_FLG_MASK                0x1
+#define RDMA_SQ_FMR_WQE_COMP_FLG_SHIFT               0
+#define RDMA_SQ_FMR_WQE_RD_FENCE_FLG_MASK            0x1
+#define RDMA_SQ_FMR_WQE_RD_FENCE_FLG_SHIFT           1
+#define RDMA_SQ_FMR_WQE_INV_FENCE_FLG_MASK           0x1
+#define RDMA_SQ_FMR_WQE_INV_FENCE_FLG_SHIFT          2
+#define RDMA_SQ_FMR_WQE_SE_FLG_MASK                  0x1
+#define RDMA_SQ_FMR_WQE_SE_FLG_SHIFT                 3
+#define RDMA_SQ_FMR_WQE_INLINE_FLG_MASK              0x1
+#define RDMA_SQ_FMR_WQE_INLINE_FLG_SHIFT             4
+#define RDMA_SQ_FMR_WQE_DIF_ON_HOST_FLG_MASK         0x1
+#define RDMA_SQ_FMR_WQE_DIF_ON_HOST_FLG_SHIFT        5
+#define RDMA_SQ_FMR_WQE_RESERVED0_MASK               0x3
+#define RDMA_SQ_FMR_WQE_RESERVED0_SHIFT              6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	u8 fmr_ctrl;
+#define RDMA_SQ_FMR_WQE_PAGE_SIZE_LOG_MASK           0x1F
+#define RDMA_SQ_FMR_WQE_PAGE_SIZE_LOG_SHIFT          0
+#define RDMA_SQ_FMR_WQE_ZERO_BASED_MASK              0x1
+#define RDMA_SQ_FMR_WQE_ZERO_BASED_SHIFT             5
+#define RDMA_SQ_FMR_WQE_BIND_EN_MASK                 0x1
+#define RDMA_SQ_FMR_WQE_BIND_EN_SHIFT                6
+#define RDMA_SQ_FMR_WQE_RESERVED1_MASK               0x1
+#define RDMA_SQ_FMR_WQE_RESERVED1_SHIFT              7
+	u8 access_ctrl;
+#define RDMA_SQ_FMR_WQE_REMOTE_READ_MASK             0x1
+#define RDMA_SQ_FMR_WQE_REMOTE_READ_SHIFT            0
+#define RDMA_SQ_FMR_WQE_REMOTE_WRITE_MASK            0x1
+#define RDMA_SQ_FMR_WQE_REMOTE_WRITE_SHIFT           1
+#define RDMA_SQ_FMR_WQE_ENABLE_ATOMIC_MASK           0x1
+#define RDMA_SQ_FMR_WQE_ENABLE_ATOMIC_SHIFT          2
+#define RDMA_SQ_FMR_WQE_LOCAL_READ_MASK              0x1
+#define RDMA_SQ_FMR_WQE_LOCAL_READ_SHIFT             3
+#define RDMA_SQ_FMR_WQE_LOCAL_WRITE_MASK             0x1
+#define RDMA_SQ_FMR_WQE_LOCAL_WRITE_SHIFT            4
+#define RDMA_SQ_FMR_WQE_RESERVED2_MASK               0x7
+#define RDMA_SQ_FMR_WQE_RESERVED2_SHIFT              5
+	u8 reserved3;
+	u8 length_hi;
+	__le32 length_lo;
+	struct regpair pbl_addr;
+	__le32 dif_base_ref_tag;
+	__le16 dif_app_tag;
+	__le16 dif_app_tag_mask;
+	__le16 dif_runt_crc_value;
+	__le16 dif_flags;
+#define RDMA_SQ_FMR_WQE_DIF_IO_DIRECTION_FLG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_DIF_IO_DIRECTION_FLG_SHIFT   0
+#define RDMA_SQ_FMR_WQE_DIF_BLOCK_SIZE_MASK          0x1
+#define RDMA_SQ_FMR_WQE_DIF_BLOCK_SIZE_SHIFT         1
+#define RDMA_SQ_FMR_WQE_DIF_RUNT_VALID_FLG_MASK      0x1
+#define RDMA_SQ_FMR_WQE_DIF_RUNT_VALID_FLG_SHIFT     2
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_CRC_GUARD_MASK  0x1
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_CRC_GUARD_SHIFT 3
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_REF_TAG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_REF_TAG_SHIFT   4
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_APP_TAG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_DIF_VALIDATE_APP_TAG_SHIFT   5
+#define RDMA_SQ_FMR_WQE_DIF_CRC_SEED_MASK            0x1
+#define RDMA_SQ_FMR_WQE_DIF_CRC_SEED_SHIFT           6
+#define RDMA_SQ_FMR_WQE_RESERVED4_MASK               0x1FF
+#define RDMA_SQ_FMR_WQE_RESERVED4_SHIFT              7
+	__le32 Reserved5;
+};
+
+/* First element (16 bytes) of fmr wqe */
+struct rdma_sq_fmr_wqe_1st {
+	struct regpair addr;
+	__le32 l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_FMR_WQE_1ST_COMP_FLG_MASK         0x1
+#define RDMA_SQ_FMR_WQE_1ST_COMP_FLG_SHIFT        0
+#define RDMA_SQ_FMR_WQE_1ST_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_FMR_WQE_1ST_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_FMR_WQE_1ST_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_1ST_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_FMR_WQE_1ST_SE_FLG_MASK           0x1
+#define RDMA_SQ_FMR_WQE_1ST_SE_FLG_SHIFT          3
+#define RDMA_SQ_FMR_WQE_1ST_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_FMR_WQE_1ST_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_FMR_WQE_1ST_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_FMR_WQE_1ST_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_FMR_WQE_1ST_RESERVED0_MASK        0x3
+#define RDMA_SQ_FMR_WQE_1ST_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+/* Second element (16 bytes) of fmr wqe */
+struct rdma_sq_fmr_wqe_2nd {
+	u8 fmr_ctrl;
+#define RDMA_SQ_FMR_WQE_2ND_PAGE_SIZE_LOG_MASK  0x1F
+#define RDMA_SQ_FMR_WQE_2ND_PAGE_SIZE_LOG_SHIFT 0
+#define RDMA_SQ_FMR_WQE_2ND_ZERO_BASED_MASK     0x1
+#define RDMA_SQ_FMR_WQE_2ND_ZERO_BASED_SHIFT    5
+#define RDMA_SQ_FMR_WQE_2ND_BIND_EN_MASK        0x1
+#define RDMA_SQ_FMR_WQE_2ND_BIND_EN_SHIFT       6
+#define RDMA_SQ_FMR_WQE_2ND_RESERVED1_MASK      0x1
+#define RDMA_SQ_FMR_WQE_2ND_RESERVED1_SHIFT     7
+	u8 access_ctrl;
+#define RDMA_SQ_FMR_WQE_2ND_REMOTE_READ_MASK    0x1
+#define RDMA_SQ_FMR_WQE_2ND_REMOTE_READ_SHIFT   0
+#define RDMA_SQ_FMR_WQE_2ND_REMOTE_WRITE_MASK   0x1
+#define RDMA_SQ_FMR_WQE_2ND_REMOTE_WRITE_SHIFT  1
+#define RDMA_SQ_FMR_WQE_2ND_ENABLE_ATOMIC_MASK  0x1
+#define RDMA_SQ_FMR_WQE_2ND_ENABLE_ATOMIC_SHIFT 2
+#define RDMA_SQ_FMR_WQE_2ND_LOCAL_READ_MASK     0x1
+#define RDMA_SQ_FMR_WQE_2ND_LOCAL_READ_SHIFT    3
+#define RDMA_SQ_FMR_WQE_2ND_LOCAL_WRITE_MASK    0x1
+#define RDMA_SQ_FMR_WQE_2ND_LOCAL_WRITE_SHIFT   4
+#define RDMA_SQ_FMR_WQE_2ND_RESERVED2_MASK      0x7
+#define RDMA_SQ_FMR_WQE_2ND_RESERVED2_SHIFT     5
+	u8 reserved3;
+	u8 length_hi;
+	__le32 length_lo;
+	struct regpair pbl_addr;
+};
+
+/* Third element (16 bytes) of fmr wqe */
+struct rdma_sq_fmr_wqe_3rd {
+	__le32 dif_base_ref_tag;
+	__le16 dif_app_tag;
+	__le16 dif_app_tag_mask;
+	__le16 dif_runt_crc_value;
+	__le16 dif_flags;
+#define RDMA_SQ_FMR_WQE_3RD_DIF_IO_DIRECTION_FLG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_IO_DIRECTION_FLG_SHIFT   0
+#define RDMA_SQ_FMR_WQE_3RD_DIF_BLOCK_SIZE_MASK          0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_BLOCK_SIZE_SHIFT         1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_RUNT_VALID_FLG_MASK      0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_RUNT_VALID_FLG_SHIFT     2
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_CRC_GUARD_MASK  0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_CRC_GUARD_SHIFT 3
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_REF_TAG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_REF_TAG_SHIFT   4
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_APP_TAG_MASK    0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_VALIDATE_APP_TAG_SHIFT   5
+#define RDMA_SQ_FMR_WQE_3RD_DIF_CRC_SEED_MASK            0x1
+#define RDMA_SQ_FMR_WQE_3RD_DIF_CRC_SEED_SHIFT           6
+#define RDMA_SQ_FMR_WQE_3RD_RESERVED4_MASK               0x1FF
+#define RDMA_SQ_FMR_WQE_3RD_RESERVED4_SHIFT              7
+	__le32 Reserved5;
+};
+
+struct rdma_sq_local_inv_wqe {
+	struct regpair reserved;
+	__le32 inv_l_key;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_LOCAL_INV_WQE_COMP_FLG_MASK         0x1
+#define RDMA_SQ_LOCAL_INV_WQE_COMP_FLG_SHIFT        0
+#define RDMA_SQ_LOCAL_INV_WQE_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_LOCAL_INV_WQE_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_LOCAL_INV_WQE_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_LOCAL_INV_WQE_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_LOCAL_INV_WQE_SE_FLG_MASK           0x1
+#define RDMA_SQ_LOCAL_INV_WQE_SE_FLG_SHIFT          3
+#define RDMA_SQ_LOCAL_INV_WQE_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_LOCAL_INV_WQE_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_LOCAL_INV_WQE_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_LOCAL_INV_WQE_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_LOCAL_INV_WQE_RESERVED0_MASK        0x3
+#define RDMA_SQ_LOCAL_INV_WQE_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+struct rdma_sq_rdma_wqe {
+	__le32 imm_data;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_RDMA_WQE_COMP_FLG_MASK                  0x1
+#define RDMA_SQ_RDMA_WQE_COMP_FLG_SHIFT                 0
+#define RDMA_SQ_RDMA_WQE_RD_FENCE_FLG_MASK              0x1
+#define RDMA_SQ_RDMA_WQE_RD_FENCE_FLG_SHIFT             1
+#define RDMA_SQ_RDMA_WQE_INV_FENCE_FLG_MASK             0x1
+#define RDMA_SQ_RDMA_WQE_INV_FENCE_FLG_SHIFT            2
+#define RDMA_SQ_RDMA_WQE_SE_FLG_MASK                    0x1
+#define RDMA_SQ_RDMA_WQE_SE_FLG_SHIFT                   3
+#define RDMA_SQ_RDMA_WQE_INLINE_FLG_MASK                0x1
+#define RDMA_SQ_RDMA_WQE_INLINE_FLG_SHIFT               4
+#define RDMA_SQ_RDMA_WQE_DIF_ON_HOST_FLG_MASK           0x1
+#define RDMA_SQ_RDMA_WQE_DIF_ON_HOST_FLG_SHIFT          5
+#define RDMA_SQ_RDMA_WQE_RESERVED0_MASK                 0x3
+#define RDMA_SQ_RDMA_WQE_RESERVED0_SHIFT                6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	struct regpair remote_va;
+	__le32 r_key;
+	u8 dif_flags;
+#define RDMA_SQ_RDMA_WQE_DIF_BLOCK_SIZE_MASK            0x1
+#define RDMA_SQ_RDMA_WQE_DIF_BLOCK_SIZE_SHIFT           0
+#define RDMA_SQ_RDMA_WQE_DIF_FIRST_RDMA_IN_IO_FLG_MASK  0x1
+#define RDMA_SQ_RDMA_WQE_DIF_FIRST_RDMA_IN_IO_FLG_SHIFT 1
+#define RDMA_SQ_RDMA_WQE_DIF_LAST_RDMA_IN_IO_FLG_MASK   0x1
+#define RDMA_SQ_RDMA_WQE_DIF_LAST_RDMA_IN_IO_FLG_SHIFT  2
+#define RDMA_SQ_RDMA_WQE_RESERVED1_MASK                 0x1F
+#define RDMA_SQ_RDMA_WQE_RESERVED1_SHIFT                3
+	u8 reserved2[3];
+};
+
+/* First element (16 bytes) of rdma wqe */
+struct rdma_sq_rdma_wqe_1st {
+	__le32 imm_data;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_RDMA_WQE_1ST_COMP_FLG_MASK         0x1
+#define RDMA_SQ_RDMA_WQE_1ST_COMP_FLG_SHIFT        0
+#define RDMA_SQ_RDMA_WQE_1ST_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_RDMA_WQE_1ST_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_RDMA_WQE_1ST_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_RDMA_WQE_1ST_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_RDMA_WQE_1ST_SE_FLG_MASK           0x1
+#define RDMA_SQ_RDMA_WQE_1ST_SE_FLG_SHIFT          3
+#define RDMA_SQ_RDMA_WQE_1ST_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_RDMA_WQE_1ST_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_RDMA_WQE_1ST_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_RDMA_WQE_1ST_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_RDMA_WQE_1ST_RESERVED0_MASK        0x3
+#define RDMA_SQ_RDMA_WQE_1ST_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+/* Second element (16 bytes) of rdma wqe */
+struct rdma_sq_rdma_wqe_2nd {
+	struct regpair remote_va;
+	__le32 r_key;
+	u8 dif_flags;
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_BLOCK_SIZE_MASK         0x1
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_BLOCK_SIZE_SHIFT        0
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_FIRST_SEGMENT_FLG_MASK  0x1
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_FIRST_SEGMENT_FLG_SHIFT 1
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_LAST_SEGMENT_FLG_MASK   0x1
+#define RDMA_SQ_RDMA_WQE_2ND_DIF_LAST_SEGMENT_FLG_SHIFT  2
+#define RDMA_SQ_RDMA_WQE_2ND_RESERVED1_MASK              0x1F
+#define RDMA_SQ_RDMA_WQE_2ND_RESERVED1_SHIFT             3
+	u8 reserved2[3];
+};
+
+/* SQ WQE req type enumeration */
+enum rdma_sq_req_type {
+	RDMA_SQ_REQ_TYPE_SEND,
+	RDMA_SQ_REQ_TYPE_SEND_WITH_IMM,
+	RDMA_SQ_REQ_TYPE_SEND_WITH_INVALIDATE,
+	RDMA_SQ_REQ_TYPE_RDMA_WR,
+	RDMA_SQ_REQ_TYPE_RDMA_WR_WITH_IMM,
+	RDMA_SQ_REQ_TYPE_RDMA_RD,
+	RDMA_SQ_REQ_TYPE_ATOMIC_CMP_AND_SWAP,
+	RDMA_SQ_REQ_TYPE_ATOMIC_ADD,
+	RDMA_SQ_REQ_TYPE_LOCAL_INVALIDATE,
+	RDMA_SQ_REQ_TYPE_FAST_MR,
+	RDMA_SQ_REQ_TYPE_BIND,
+	RDMA_SQ_REQ_TYPE_INVALID,
+	MAX_RDMA_SQ_REQ_TYPE
+};
+
+struct rdma_sq_send_wqe {
+	__le32 inv_key_or_imm_data;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_SEND_WQE_COMP_FLG_MASK         0x1
+#define RDMA_SQ_SEND_WQE_COMP_FLG_SHIFT        0
+#define RDMA_SQ_SEND_WQE_RD_FENCE_FLG_MASK     0x1
+#define RDMA_SQ_SEND_WQE_RD_FENCE_FLG_SHIFT    1
+#define RDMA_SQ_SEND_WQE_INV_FENCE_FLG_MASK    0x1
+#define RDMA_SQ_SEND_WQE_INV_FENCE_FLG_SHIFT   2
+#define RDMA_SQ_SEND_WQE_SE_FLG_MASK           0x1
+#define RDMA_SQ_SEND_WQE_SE_FLG_SHIFT          3
+#define RDMA_SQ_SEND_WQE_INLINE_FLG_MASK       0x1
+#define RDMA_SQ_SEND_WQE_INLINE_FLG_SHIFT      4
+#define RDMA_SQ_SEND_WQE_DIF_ON_HOST_FLG_MASK  0x1
+#define RDMA_SQ_SEND_WQE_DIF_ON_HOST_FLG_SHIFT 5
+#define RDMA_SQ_SEND_WQE_RESERVED0_MASK        0x3
+#define RDMA_SQ_SEND_WQE_RESERVED0_SHIFT       6
+	u8 wqe_size;
+	u8 prev_wqe_size;
+	__le32 reserved1[4];
+};
+
+struct rdma_sq_send_wqe_1st {
+	__le32 inv_key_or_imm_data;
+	__le32 length;
+	__le32 xrc_srq;
+	u8 req_type;
+	u8 flags;
+#define RDMA_SQ_SEND_WQE_1ST_COMP_FLG_MASK       0x1
+#define RDMA_SQ_SEND_WQE_1ST_COMP_FLG_SHIFT      0
+#define RDMA_SQ_SEND_WQE_1ST_RD_FENCE_FLG_MASK   0x1
+#define RDMA_SQ_SEND_WQE_1ST_RD_FENCE_FLG_SHIFT  1
+#define RDMA_SQ_SEND_WQE_1ST_INV_FENCE_FLG_MASK  0x1
+#define RDMA_SQ_SEND_WQE_1ST_INV_FENCE_FLG_SHIFT 2
+#define RDMA_SQ_SEND_WQE_1ST_SE_FLG_MASK         0x1
+#define RDMA_SQ_SEND_WQE_1ST_SE_FLG_SHIFT        3
+#define RDMA_SQ_SEND_WQE_1ST_INLINE_FLG_MASK     0x1
+#define RDMA_SQ_SEND_WQE_1ST_INLINE_FLG_SHIFT    4
+#define RDMA_SQ_SEND_WQE_1ST_RESERVED0_MASK      0x7
+#define RDMA_SQ_SEND_WQE_1ST_RESERVED0_SHIFT     5
+	u8 wqe_size;
+	u8 prev_wqe_size;
+};
+
+struct rdma_sq_send_wqe_2st {
+	__le32 reserved1[4];
+};
+
 #endif /* __QED_HSI_RDMA__ */

drivers/infiniband/hw/qedr/verbs.c

@@ -2447,3 +2447,1023 @@ err1:
 	kfree(mr);
 	return ERR_PTR(rc);
 }
+
+static inline int qedr_wq_is_full(struct qedr_qp_hwq_info *wq)
+{
+	return (((wq->prod + 1) % wq->max_wr) == wq->cons);
+}
+
+static int sge_data_len(struct ib_sge *sg_list, int num_sge)
+{
+	int i, len = 0;
+
+	for (i = 0; i < num_sge; i++)
+		len += sg_list[i].length;
+
+	return len;
+}
+
+static void swap_wqe_data64(u64 *p)
+{
+	int i;
+
+	for (i = 0; i < QEDR_SQE_ELEMENT_SIZE / sizeof(u64); i++, p++)
+		*p = cpu_to_be64(cpu_to_le64(*p));
+}
+
+static u32 qedr_prepare_sq_inline_data(struct qedr_dev *dev,
+				       struct qedr_qp *qp, u8 *wqe_size,
+				       struct ib_send_wr *wr,
+				       struct ib_send_wr **bad_wr, u8 *bits,
+				       u8 bit)
+{
+	u32 data_size = sge_data_len(wr->sg_list, wr->num_sge);
+	char *seg_prt, *wqe;
+	int i, seg_siz;
+
+	if (data_size > ROCE_REQ_MAX_INLINE_DATA_SIZE) {
+		DP_ERR(dev, "Too much inline data in WR: %d\n", data_size);
+		*bad_wr = wr;
+		return 0;
+	}
+
+	if (!data_size)
+		return data_size;
+
+	*bits |= bit;
+
+	seg_prt = NULL;
+	wqe = NULL;
+	seg_siz = 0;
+
+	/* Copy data inline */
+	for (i = 0; i < wr->num_sge; i++) {
+		u32 len = wr->sg_list[i].length;
+		void *src = (void *)(uintptr_t)wr->sg_list[i].addr;
+
+		while (len > 0) {
+			u32 cur;
+
+			/* New segment required */
+			if (!seg_siz) {
+				wqe = (char *)qed_chain_produce(&qp->sq.pbl);
+				seg_prt = wqe;
+				seg_siz = sizeof(struct rdma_sq_common_wqe);
+				(*wqe_size)++;
+			}
+
+			/* Calculate currently allowed length */
+			cur = min_t(u32, len, seg_siz);
+			memcpy(seg_prt, src, cur);
+
+			/* Update segment variables */
+			seg_prt += cur;
+			seg_siz -= cur;
+
+			/* Update sge variables */
+			src += cur;
+			len -= cur;
+
+			/* Swap fully-completed segments */
+			if (!seg_siz)
+				swap_wqe_data64((u64 *)wqe);
+		}
+	}
+
+	/* swap last not completed segment */
+	if (seg_siz)
+		swap_wqe_data64((u64 *)wqe);
+
+	return data_size;
+}
+
+#define RQ_SGE_SET(sge, vaddr, vlength, vflags)			\
+	do {							\
+		DMA_REGPAIR_LE(sge->addr, vaddr);		\
+		(sge)->length = cpu_to_le32(vlength);		\
+		(sge)->flags = cpu_to_le32(vflags);		\
+	} while (0)
+
+#define SRQ_HDR_SET(hdr, vwr_id, num_sge)			\
+	do {							\
+		DMA_REGPAIR_LE(hdr->wr_id, vwr_id);		\
+		(hdr)->num_sges = num_sge;			\
+	} while (0)
+
+#define SRQ_SGE_SET(sge, vaddr, vlength, vlkey)			\
+	do {							\
+		DMA_REGPAIR_LE(sge->addr, vaddr);		\
+		(sge)->length = cpu_to_le32(vlength);		\
+		(sge)->l_key = cpu_to_le32(vlkey);		\
+	} while (0)
+
+static u32 qedr_prepare_sq_sges(struct qedr_qp *qp, u8 *wqe_size,
+				struct ib_send_wr *wr)
+{
+	u32 data_size = 0;
+	int i;
+
+	for (i = 0; i < wr->num_sge; i++) {
+		struct rdma_sq_sge *sge = qed_chain_produce(&qp->sq.pbl);
+
+		DMA_REGPAIR_LE(sge->addr, wr->sg_list[i].addr);
+		sge->l_key = cpu_to_le32(wr->sg_list[i].lkey);
+		sge->length = cpu_to_le32(wr->sg_list[i].length);
+		data_size += wr->sg_list[i].length;
+	}
+
+	if (wqe_size)
+		*wqe_size += wr->num_sge;
+
+	return data_size;
+}
+
+static u32 qedr_prepare_sq_rdma_data(struct qedr_dev *dev,
+				     struct qedr_qp *qp,
+				     struct rdma_sq_rdma_wqe_1st *rwqe,
+				     struct rdma_sq_rdma_wqe_2nd *rwqe2,
+				     struct ib_send_wr *wr,
+				     struct ib_send_wr **bad_wr)
+{
+	rwqe2->r_key = cpu_to_le32(rdma_wr(wr)->rkey);
+	DMA_REGPAIR_LE(rwqe2->remote_va, rdma_wr(wr)->remote_addr);
+
+	if (wr->send_flags & IB_SEND_INLINE) {
+		u8 flags = 0;
+
+		SET_FIELD2(flags, RDMA_SQ_RDMA_WQE_1ST_INLINE_FLG, 1);
+		return qedr_prepare_sq_inline_data(dev, qp, &rwqe->wqe_size, wr,
+						   bad_wr, &rwqe->flags, flags);
+	}
+
+	return qedr_prepare_sq_sges(qp, &rwqe->wqe_size, wr);
+}
+
+static u32 qedr_prepare_sq_send_data(struct qedr_dev *dev,
+				     struct qedr_qp *qp,
+				     struct rdma_sq_send_wqe_1st *swqe,
+				     struct rdma_sq_send_wqe_2st *swqe2,
+				     struct ib_send_wr *wr,
+				     struct ib_send_wr **bad_wr)
+{
+	memset(swqe2, 0, sizeof(*swqe2));
+	if (wr->send_flags & IB_SEND_INLINE) {
+		u8 flags = 0;
+
+		SET_FIELD2(flags, RDMA_SQ_SEND_WQE_INLINE_FLG, 1);
+		return qedr_prepare_sq_inline_data(dev, qp, &swqe->wqe_size, wr,
+						   bad_wr, &swqe->flags, flags);
+	}
+
+	return qedr_prepare_sq_sges(qp, &swqe->wqe_size, wr);
+}
+
+static int qedr_prepare_reg(struct qedr_qp *qp,
+			    struct rdma_sq_fmr_wqe_1st *fwqe1,
+			    struct ib_reg_wr *wr)
+{
+	struct qedr_mr *mr = get_qedr_mr(wr->mr);
+	struct rdma_sq_fmr_wqe_2nd *fwqe2;
+
+	fwqe2 = (struct rdma_sq_fmr_wqe_2nd *)qed_chain_produce(&qp->sq.pbl);
+	fwqe1->addr.hi = upper_32_bits(mr->ibmr.iova);
+	fwqe1->addr.lo = lower_32_bits(mr->ibmr.iova);
+	fwqe1->l_key = wr->key;
+
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_REMOTE_READ,
+		   !!(wr->access & IB_ACCESS_REMOTE_READ));
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_REMOTE_WRITE,
+		   !!(wr->access & IB_ACCESS_REMOTE_WRITE));
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_ENABLE_ATOMIC,
+		   !!(wr->access & IB_ACCESS_REMOTE_ATOMIC));
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_LOCAL_READ, 1);
+	SET_FIELD2(fwqe2->access_ctrl, RDMA_SQ_FMR_WQE_2ND_LOCAL_WRITE,
+		   !!(wr->access & IB_ACCESS_LOCAL_WRITE));
+	fwqe2->fmr_ctrl = 0;
+
+	SET_FIELD2(fwqe2->fmr_ctrl, RDMA_SQ_FMR_WQE_2ND_PAGE_SIZE_LOG,
+		   ilog2(mr->ibmr.page_size) - 12);
+
+	fwqe2->length_hi = 0;
+	fwqe2->length_lo = mr->ibmr.length;
+	fwqe2->pbl_addr.hi = upper_32_bits(mr->info.pbl_table->pa);
+	fwqe2->pbl_addr.lo = lower_32_bits(mr->info.pbl_table->pa);
+
+	qp->wqe_wr_id[qp->sq.prod].mr = mr;
+
+	return 0;
+}
+
+enum ib_wc_opcode qedr_ib_to_wc_opcode(enum ib_wr_opcode opcode)
+{
+	switch (opcode) {
+	case IB_WR_RDMA_WRITE:
+	case IB_WR_RDMA_WRITE_WITH_IMM:
+		return IB_WC_RDMA_WRITE;
+	case IB_WR_SEND_WITH_IMM:
+	case IB_WR_SEND:
+	case IB_WR_SEND_WITH_INV:
+		return IB_WC_SEND;
+	case IB_WR_RDMA_READ:
+		return IB_WC_RDMA_READ;
+	case IB_WR_ATOMIC_CMP_AND_SWP:
+		return IB_WC_COMP_SWAP;
+	case IB_WR_ATOMIC_FETCH_AND_ADD:
+		return IB_WC_FETCH_ADD;
+	case IB_WR_REG_MR:
+		return IB_WC_REG_MR;
+	case IB_WR_LOCAL_INV:
+		return IB_WC_LOCAL_INV;
+	default:
+		return IB_WC_SEND;
+	}
+}
+
+inline bool qedr_can_post_send(struct qedr_qp *qp, struct ib_send_wr *wr)
+{
+	int wq_is_full, err_wr, pbl_is_full;
+	struct qedr_dev *dev = qp->dev;
+
+	/* prevent SQ overflow and/or processing of a bad WR */
+	err_wr = wr->num_sge > qp->sq.max_sges;
+	wq_is_full = qedr_wq_is_full(&qp->sq);
+	pbl_is_full = qed_chain_get_elem_left_u32(&qp->sq.pbl) <
+		      QEDR_MAX_SQE_ELEMENTS_PER_SQE;
+	if (wq_is_full || err_wr || pbl_is_full) {
+		if (wq_is_full && !(qp->err_bitmap & QEDR_QP_ERR_SQ_FULL)) {
+			DP_ERR(dev,
+			       "error: WQ is full. Post send on QP %p failed (this error appears only once)\n",
+			       qp);
+			qp->err_bitmap |= QEDR_QP_ERR_SQ_FULL;
+		}
+
+		if (err_wr && !(qp->err_bitmap & QEDR_QP_ERR_BAD_SR)) {
+			DP_ERR(dev,
+			       "error: WR is bad. Post send on QP %p failed (this error appears only once)\n",
+			       qp);
+			qp->err_bitmap |= QEDR_QP_ERR_BAD_SR;
+		}
+
+		if (pbl_is_full &&
+		    !(qp->err_bitmap & QEDR_QP_ERR_SQ_PBL_FULL)) {
+			DP_ERR(dev,
+			       "error: WQ PBL is full. Post send on QP %p failed (this error appears only once)\n",
+			       qp);
+			qp->err_bitmap |= QEDR_QP_ERR_SQ_PBL_FULL;
+		}
+		return false;
+	}
+	return true;
+}
+
+int __qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+		     struct ib_send_wr **bad_wr)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibqp->device);
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	struct rdma_sq_atomic_wqe_1st *awqe1;
+	struct rdma_sq_atomic_wqe_2nd *awqe2;
+	struct rdma_sq_atomic_wqe_3rd *awqe3;
+	struct rdma_sq_send_wqe_2st *swqe2;
+	struct rdma_sq_local_inv_wqe *iwqe;
+	struct rdma_sq_rdma_wqe_2nd *rwqe2;
+	struct rdma_sq_send_wqe_1st *swqe;
+	struct rdma_sq_rdma_wqe_1st *rwqe;
+	struct rdma_sq_fmr_wqe_1st *fwqe1;
+	struct rdma_sq_common_wqe *wqe;
+	u32 length;
+	int rc = 0;
+	bool comp;
+
+	if (!qedr_can_post_send(qp, wr)) {
+		*bad_wr = wr;
+		return -ENOMEM;
+	}
+
+	wqe = qed_chain_produce(&qp->sq.pbl);
+	qp->wqe_wr_id[qp->sq.prod].signaled =
+		!!(wr->send_flags & IB_SEND_SIGNALED) || qp->signaled;
+
+	wqe->flags = 0;
+	SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_SE_FLG,
+		   !!(wr->send_flags & IB_SEND_SOLICITED));
+	comp = (!!(wr->send_flags & IB_SEND_SIGNALED)) || qp->signaled;
+	SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_COMP_FLG, comp);
+	SET_FIELD2(wqe->flags, RDMA_SQ_SEND_WQE_RD_FENCE_FLG,
+		   !!(wr->send_flags & IB_SEND_FENCE));
+	wqe->prev_wqe_size = qp->prev_wqe_size;
+
+	qp->wqe_wr_id[qp->sq.prod].opcode = qedr_ib_to_wc_opcode(wr->opcode);
+
+	switch (wr->opcode) {
+	case IB_WR_SEND_WITH_IMM:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_SEND_WITH_IMM;
+		swqe = (struct rdma_sq_send_wqe_1st *)wqe;
+		swqe->wqe_size = 2;
+		swqe2 = qed_chain_produce(&qp->sq.pbl);
+
+		swqe->inv_key_or_imm_data = cpu_to_le32(wr->ex.imm_data);
+		length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2,
+						   wr, bad_wr);
+		swqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size;
+		qp->prev_wqe_size = swqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length;
+		break;
+	case IB_WR_SEND:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_SEND;
+		swqe = (struct rdma_sq_send_wqe_1st *)wqe;
+
+		swqe->wqe_size = 2;
+		swqe2 = qed_chain_produce(&qp->sq.pbl);
+		length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2,
+						   wr, bad_wr);
+		swqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size;
+		qp->prev_wqe_size = swqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length;
+		break;
+	case IB_WR_SEND_WITH_INV:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_SEND_WITH_INVALIDATE;
+		swqe = (struct rdma_sq_send_wqe_1st *)wqe;
+		swqe2 = qed_chain_produce(&qp->sq.pbl);
+		swqe->wqe_size = 2;
+		swqe->inv_key_or_imm_data = cpu_to_le32(wr->ex.invalidate_rkey);
+		length = qedr_prepare_sq_send_data(dev, qp, swqe, swqe2,
+						   wr, bad_wr);
+		swqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = swqe->wqe_size;
+		qp->prev_wqe_size = swqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = swqe->length;
+		break;
+
+	case IB_WR_RDMA_WRITE_WITH_IMM:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_WR_WITH_IMM;
+		rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe;
+
+		rwqe->wqe_size = 2;
+		rwqe->imm_data = htonl(cpu_to_le32(wr->ex.imm_data));
+		rwqe2 = qed_chain_produce(&qp->sq.pbl);
+		length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2,
+						   wr, bad_wr);
+		rwqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size;
+		qp->prev_wqe_size = rwqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length;
+		break;
+	case IB_WR_RDMA_WRITE:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_WR;
+		rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe;
+
+		rwqe->wqe_size = 2;
+		rwqe2 = qed_chain_produce(&qp->sq.pbl);
+		length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2,
+						   wr, bad_wr);
+		rwqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size;
+		qp->prev_wqe_size = rwqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length;
+		break;
+	case IB_WR_RDMA_READ_WITH_INV:
+		DP_ERR(dev,
+		       "RDMA READ WITH INVALIDATE not supported\n");
+		*bad_wr = wr;
+		rc = -EINVAL;
+		break;
+
+	case IB_WR_RDMA_READ:
+		wqe->req_type = RDMA_SQ_REQ_TYPE_RDMA_RD;
+		rwqe = (struct rdma_sq_rdma_wqe_1st *)wqe;
+
+		rwqe->wqe_size = 2;
+		rwqe2 = qed_chain_produce(&qp->sq.pbl);
+		length = qedr_prepare_sq_rdma_data(dev, qp, rwqe, rwqe2,
+						   wr, bad_wr);
+		rwqe->length = cpu_to_le32(length);
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = rwqe->wqe_size;
+		qp->prev_wqe_size = rwqe->wqe_size;
+		qp->wqe_wr_id[qp->sq.prod].bytes_len = rwqe->length;
+		break;
+
+	case IB_WR_ATOMIC_CMP_AND_SWP:
+	case IB_WR_ATOMIC_FETCH_AND_ADD:
+		awqe1 = (struct rdma_sq_atomic_wqe_1st *)wqe;
+		awqe1->wqe_size = 4;
+
+		awqe2 = qed_chain_produce(&qp->sq.pbl);
+		DMA_REGPAIR_LE(awqe2->remote_va, atomic_wr(wr)->remote_addr);
+		awqe2->r_key = cpu_to_le32(atomic_wr(wr)->rkey);
+
+		awqe3 = qed_chain_produce(&qp->sq.pbl);
+
+		if (wr->opcode == IB_WR_ATOMIC_FETCH_AND_ADD) {
+			wqe->req_type = RDMA_SQ_REQ_TYPE_ATOMIC_ADD;
+			DMA_REGPAIR_LE(awqe3->swap_data,
+				       atomic_wr(wr)->compare_add);
+		} else {
+			wqe->req_type = RDMA_SQ_REQ_TYPE_ATOMIC_CMP_AND_SWAP;
+			DMA_REGPAIR_LE(awqe3->swap_data,
+				       atomic_wr(wr)->swap);
+			DMA_REGPAIR_LE(awqe3->cmp_data,
+				       atomic_wr(wr)->compare_add);
+		}
+
+		qedr_prepare_sq_sges(qp, NULL, wr);
+
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = awqe1->wqe_size;
+		qp->prev_wqe_size = awqe1->wqe_size;
+		break;
+
+	case IB_WR_LOCAL_INV:
+		iwqe = (struct rdma_sq_local_inv_wqe *)wqe;
+		iwqe->wqe_size = 1;
+
+		iwqe->req_type = RDMA_SQ_REQ_TYPE_LOCAL_INVALIDATE;
+		iwqe->inv_l_key = wr->ex.invalidate_rkey;
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = iwqe->wqe_size;
+		qp->prev_wqe_size = iwqe->wqe_size;
+		break;
+	case IB_WR_REG_MR:
+		DP_DEBUG(dev, QEDR_MSG_CQ, "REG_MR\n");
+		wqe->req_type = RDMA_SQ_REQ_TYPE_FAST_MR;
+		fwqe1 = (struct rdma_sq_fmr_wqe_1st *)wqe;
+		fwqe1->wqe_size = 2;
+
+		rc = qedr_prepare_reg(qp, fwqe1, reg_wr(wr));
+		if (rc) {
+			DP_ERR(dev, "IB_REG_MR failed rc=%d\n", rc);
+			*bad_wr = wr;
+			break;
+		}
+
+		qp->wqe_wr_id[qp->sq.prod].wqe_size = fwqe1->wqe_size;
+		qp->prev_wqe_size = fwqe1->wqe_size;
+		break;
+	default:
+		DP_ERR(dev, "invalid opcode 0x%x!\n", wr->opcode);
+		rc = -EINVAL;
+		*bad_wr = wr;
+		break;
+	}
+
+	if (*bad_wr) {
+		u16 value;
+
+		/* Restore prod to its position before
+		 * this WR was processed
+		 */
+		value = le16_to_cpu(qp->sq.db_data.data.value);
+		qed_chain_set_prod(&qp->sq.pbl, value, wqe);
+
+		/* Restore prev_wqe_size */
+		qp->prev_wqe_size = wqe->prev_wqe_size;
+		rc = -EINVAL;
+		DP_ERR(dev, "POST SEND FAILED\n");
+	}
+
+	return rc;
+}
+
+int qedr_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr,
+		   struct ib_send_wr **bad_wr)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibqp->device);
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	unsigned long flags;
+	int rc = 0;
+
+	*bad_wr = NULL;
+
+	spin_lock_irqsave(&qp->q_lock, flags);
+
+	if ((qp->state == QED_ROCE_QP_STATE_RESET) ||
+	    (qp->state == QED_ROCE_QP_STATE_ERR)) {
+		spin_unlock_irqrestore(&qp->q_lock, flags);
+		*bad_wr = wr;
+		DP_DEBUG(dev, QEDR_MSG_CQ,
+			 "QP in wrong state! QP icid=0x%x state %d\n",
+			 qp->icid, qp->state);
+		return -EINVAL;
+	}
+
+	if (!wr) {
+		DP_ERR(dev, "Got an empty post send.\n");
+		return -EINVAL;
+	}
+
+	while (wr) {
+		rc = __qedr_post_send(ibqp, wr, bad_wr);
+		if (rc)
+			break;
+
+		qp->wqe_wr_id[qp->sq.prod].wr_id = wr->wr_id;
+
+		qedr_inc_sw_prod(&qp->sq);
+
+		qp->sq.db_data.data.value++;
+
+		wr = wr->next;
+	}
+
+	/* Trigger doorbell
+	 * If there was a failure in the first WR then it will be triggered in
+	 * vane. However this is not harmful (as long as the producer value is
+	 * unchanged). For performance reasons we avoid checking for this
+	 * redundant doorbell.
+	 */
+	wmb();
+	writel(qp->sq.db_data.raw, qp->sq.db);
+
+	/* Make sure write sticks */
+	mmiowb();
+
+	spin_unlock_irqrestore(&qp->q_lock, flags);
+
+	return rc;
+}
+
+int qedr_post_recv(struct ib_qp *ibqp, struct ib_recv_wr *wr,
+		   struct ib_recv_wr **bad_wr)
+{
+	struct qedr_qp *qp = get_qedr_qp(ibqp);
+	struct qedr_dev *dev = qp->dev;
+	unsigned long flags;
+	int status = 0;
+
+	spin_lock_irqsave(&qp->q_lock, flags);
+
+	if ((qp->state == QED_ROCE_QP_STATE_RESET) ||
+	    (qp->state == QED_ROCE_QP_STATE_ERR)) {
+		spin_unlock_irqrestore(&qp->q_lock, flags);
+		*bad_wr = wr;
+		return -EINVAL;
+	}
+
+	while (wr) {
+		int i;
+
+		if (qed_chain_get_elem_left_u32(&qp->rq.pbl) <
+		    QEDR_MAX_RQE_ELEMENTS_PER_RQE ||
+		    wr->num_sge > qp->rq.max_sges) {
+			DP_ERR(dev, "Can't post WR  (%d < %d) || (%d > %d)\n",
+			       qed_chain_get_elem_left_u32(&qp->rq.pbl),
+			       QEDR_MAX_RQE_ELEMENTS_PER_RQE, wr->num_sge,
+			       qp->rq.max_sges);
+			status = -ENOMEM;
+			*bad_wr = wr;
+			break;
+		}
+		for (i = 0; i < wr->num_sge; i++) {
+			u32 flags = 0;
+			struct rdma_rq_sge *rqe =
+			    qed_chain_produce(&qp->rq.pbl);
+
+			/* First one must include the number
+			 * of SGE in the list
+			 */
+			if (!i)
+				SET_FIELD(flags, RDMA_RQ_SGE_NUM_SGES,
+					  wr->num_sge);
+
+			SET_FIELD(flags, RDMA_RQ_SGE_L_KEY,
+				  wr->sg_list[i].lkey);
+
+			RQ_SGE_SET(rqe, wr->sg_list[i].addr,
+				   wr->sg_list[i].length, flags);
+		}
+
+		/* Special case of no sges. FW requires between 1-4 sges...
+		 * in this case we need to post 1 sge with length zero. this is
+		 * because rdma write with immediate consumes an RQ.
+		 */
+		if (!wr->num_sge) {
+			u32 flags = 0;
+			struct rdma_rq_sge *rqe =
+			    qed_chain_produce(&qp->rq.pbl);
+
+			/* First one must include the number
+			 * of SGE in the list
+			 */
+			SET_FIELD(flags, RDMA_RQ_SGE_L_KEY, 0);
+			SET_FIELD(flags, RDMA_RQ_SGE_NUM_SGES, 1);
+
+			RQ_SGE_SET(rqe, 0, 0, flags);
+			i = 1;
+		}
+
+		qp->rqe_wr_id[qp->rq.prod].wr_id = wr->wr_id;
+		qp->rqe_wr_id[qp->rq.prod].wqe_size = i;
+
+		qedr_inc_sw_prod(&qp->rq);
+
+		/* Flush all the writes before signalling doorbell */
+		wmb();
+
+		qp->rq.db_data.data.value++;
+
+		writel(qp->rq.db_data.raw, qp->rq.db);
+
+		/* Make sure write sticks */
+		mmiowb();
+
+		wr = wr->next;
+	}
+
+	spin_unlock_irqrestore(&qp->q_lock, flags);
+
+	return status;
+}
+
+static int is_valid_cqe(struct qedr_cq *cq, union rdma_cqe *cqe)
+{
+	struct rdma_cqe_requester *resp_cqe = &cqe->req;
+
+	return (resp_cqe->flags & RDMA_CQE_REQUESTER_TOGGLE_BIT_MASK) ==
+		cq->pbl_toggle;
+}
+
+static struct qedr_qp *cqe_get_qp(union rdma_cqe *cqe)
+{
+	struct rdma_cqe_requester *resp_cqe = &cqe->req;
+	struct qedr_qp *qp;
+
+	qp = (struct qedr_qp *)(uintptr_t)HILO_GEN(resp_cqe->qp_handle.hi,
+						   resp_cqe->qp_handle.lo,
+						   u64);
+	return qp;
+}
+
+static enum rdma_cqe_type cqe_get_type(union rdma_cqe *cqe)
+{
+	struct rdma_cqe_requester *resp_cqe = &cqe->req;
+
+	return GET_FIELD(resp_cqe->flags, RDMA_CQE_REQUESTER_TYPE);
+}
+
+/* Return latest CQE (needs processing) */
+static union rdma_cqe *get_cqe(struct qedr_cq *cq)
+{
+	return cq->latest_cqe;
+}
+
+/* In fmr we need to increase the number of fmr completed counter for the fmr
+ * algorithm determining whether we can free a pbl or not.
+ * we need to perform this whether the work request was signaled or not. for
+ * this purpose we call this function from the condition that checks if a wr
+ * should be skipped, to make sure we don't miss it ( possibly this fmr
+ * operation was not signalted)
+ */
+static inline void qedr_chk_if_fmr(struct qedr_qp *qp)
+{
+	if (qp->wqe_wr_id[qp->sq.cons].opcode == IB_WC_REG_MR)
+		qp->wqe_wr_id[qp->sq.cons].mr->info.completed++;
+}
+
+static int process_req(struct qedr_dev *dev, struct qedr_qp *qp,
+		       struct qedr_cq *cq, int num_entries,
+		       struct ib_wc *wc, u16 hw_cons, enum ib_wc_status status,
+		       int force)
+{
+	u16 cnt = 0;
+
+	while (num_entries && qp->sq.wqe_cons != hw_cons) {
+		if (!qp->wqe_wr_id[qp->sq.cons].signaled && !force) {
+			qedr_chk_if_fmr(qp);
+			/* skip WC */
+			goto next_cqe;
+		}
+
+		/* fill WC */
+		wc->status = status;
+		wc->wc_flags = 0;
+		wc->src_qp = qp->id;
+		wc->qp = &qp->ibqp;
+
+		wc->wr_id = qp->wqe_wr_id[qp->sq.cons].wr_id;
+		wc->opcode = qp->wqe_wr_id[qp->sq.cons].opcode;
+
+		switch (wc->opcode) {
+		case IB_WC_RDMA_WRITE:
+			wc->byte_len = qp->wqe_wr_id[qp->sq.cons].bytes_len;
+			break;
+		case IB_WC_COMP_SWAP:
+		case IB_WC_FETCH_ADD:
+			wc->byte_len = 8;
+			break;
+		case IB_WC_REG_MR:
+			qp->wqe_wr_id[qp->sq.cons].mr->info.completed++;
+			break;
+		default:
+			break;
+		}
+
+		num_entries--;
+		wc++;
+		cnt++;
+next_cqe:
+		while (qp->wqe_wr_id[qp->sq.cons].wqe_size--)
+			qed_chain_consume(&qp->sq.pbl);
+		qedr_inc_sw_cons(&qp->sq);
+	}
+
+	return cnt;
+}
+
+static int qedr_poll_cq_req(struct qedr_dev *dev,
+			    struct qedr_qp *qp, struct qedr_cq *cq,
+			    int num_entries, struct ib_wc *wc,
+			    struct rdma_cqe_requester *req)
+{
+	int cnt = 0;
+
+	switch (req->status) {
+	case RDMA_CQE_REQ_STS_OK:
+		cnt = process_req(dev, qp, cq, num_entries, wc, req->sq_cons,
+				  IB_WC_SUCCESS, 0);
+		break;
+	case RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR:
+		DP_ERR(dev,
+		       "Error: POLL CQ with RDMA_CQE_REQ_STS_WORK_REQUEST_FLUSHED_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+		       cq->icid, qp->icid);
+		cnt = process_req(dev, qp, cq, num_entries, wc, req->sq_cons,
+				  IB_WC_WR_FLUSH_ERR, 0);
+		break;
+	default:
+		/* process all WQE before the cosumer */
+		qp->state = QED_ROCE_QP_STATE_ERR;
+		cnt = process_req(dev, qp, cq, num_entries, wc,
+				  req->sq_cons - 1, IB_WC_SUCCESS, 0);
+		wc += cnt;
+		/* if we have extra WC fill it with actual error info */
+		if (cnt < num_entries) {
+			enum ib_wc_status wc_status;
+
+			switch (req->status) {
+			case RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_BAD_RESPONSE_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_BAD_RESP_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_LENGTH_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_LOC_LEN_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_QP_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_LOC_QP_OP_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_LOCAL_PROTECTION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_LOC_PROT_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_MEMORY_MGT_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_MW_BIND_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_INVALID_REQUEST_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_REM_INV_REQ_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_ACCESS_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_REM_ACCESS_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_REMOTE_OPERATION_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_REM_OP_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with RDMA_CQE_REQ_STS_RNR_NAK_RETRY_CNT_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_RNR_RETRY_EXC_ERR;
+				break;
+			case RDMA_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR:
+				DP_ERR(dev,
+				       "Error: POLL CQ with ROCE_CQE_REQ_STS_TRANSPORT_RETRY_CNT_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_RETRY_EXC_ERR;
+				break;
+			default:
+				DP_ERR(dev,
+				       "Error: POLL CQ with IB_WC_GENERAL_ERR. CQ icid=0x%x, QP icid=0x%x\n",
+				       cq->icid, qp->icid);
+				wc_status = IB_WC_GENERAL_ERR;
+			}
+			cnt += process_req(dev, qp, cq, 1, wc, req->sq_cons,
+					   wc_status, 1);
+		}
+	}
+
+	return cnt;
+}
+
+static void __process_resp_one(struct qedr_dev *dev, struct qedr_qp *qp,
+			       struct qedr_cq *cq, struct ib_wc *wc,
+			       struct rdma_cqe_responder *resp, u64 wr_id)
+{
+	enum ib_wc_status wc_status = IB_WC_SUCCESS;
+	u8 flags;
+
+	wc->opcode = IB_WC_RECV;
+	wc->wc_flags = 0;
+
+	switch (resp->status) {
+	case RDMA_CQE_RESP_STS_LOCAL_ACCESS_ERR:
+		wc_status = IB_WC_LOC_ACCESS_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_LOCAL_LENGTH_ERR:
+		wc_status = IB_WC_LOC_LEN_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_LOCAL_QP_OPERATION_ERR:
+		wc_status = IB_WC_LOC_QP_OP_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_LOCAL_PROTECTION_ERR:
+		wc_status = IB_WC_LOC_PROT_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_MEMORY_MGT_OPERATION_ERR:
+		wc_status = IB_WC_MW_BIND_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_REMOTE_INVALID_REQUEST_ERR:
+		wc_status = IB_WC_REM_INV_RD_REQ_ERR;
+		break;
+	case RDMA_CQE_RESP_STS_OK:
+		wc_status = IB_WC_SUCCESS;
+		wc->byte_len = le32_to_cpu(resp->length);
+
+		flags = resp->flags & QEDR_RESP_RDMA_IMM;
+
+		if (flags == QEDR_RESP_RDMA_IMM)
+			wc->opcode = IB_WC_RECV_RDMA_WITH_IMM;
+
+		if (flags == QEDR_RESP_RDMA_IMM || flags == QEDR_RESP_IMM) {
+			wc->ex.imm_data =
+				le32_to_cpu(resp->imm_data_or_inv_r_Key);
+			wc->wc_flags |= IB_WC_WITH_IMM;
+		}
+		break;
+	default:
+		wc->status = IB_WC_GENERAL_ERR;
+		DP_ERR(dev, "Invalid CQE status detected\n");
+	}
+
+	/* fill WC */
+	wc->status = wc_status;
+	wc->src_qp = qp->id;
+	wc->qp = &qp->ibqp;
+	wc->wr_id = wr_id;
+}
+
+static int process_resp_one(struct qedr_dev *dev, struct qedr_qp *qp,
+			    struct qedr_cq *cq, struct ib_wc *wc,
+			    struct rdma_cqe_responder *resp)
+{
+	u64 wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id;
+
+	__process_resp_one(dev, qp, cq, wc, resp, wr_id);
+
+	while (qp->rqe_wr_id[qp->rq.cons].wqe_size--)
+		qed_chain_consume(&qp->rq.pbl);
+	qedr_inc_sw_cons(&qp->rq);
+
+	return 1;
+}
+
+static int process_resp_flush(struct qedr_qp *qp, struct qedr_cq *cq,
+			      int num_entries, struct ib_wc *wc, u16 hw_cons)
+{
+	u16 cnt = 0;
+
+	while (num_entries && qp->rq.wqe_cons != hw_cons) {
+		/* fill WC */
+		wc->status = IB_WC_WR_FLUSH_ERR;
+		wc->wc_flags = 0;
+		wc->src_qp = qp->id;
+		wc->byte_len = 0;
+		wc->wr_id = qp->rqe_wr_id[qp->rq.cons].wr_id;
+		wc->qp = &qp->ibqp;
+		num_entries--;
+		wc++;
+		cnt++;
+		while (qp->rqe_wr_id[qp->rq.cons].wqe_size--)
+			qed_chain_consume(&qp->rq.pbl);
+		qedr_inc_sw_cons(&qp->rq);
+	}
+
+	return cnt;
+}
+
+static void try_consume_resp_cqe(struct qedr_cq *cq, struct qedr_qp *qp,
+				 struct rdma_cqe_responder *resp, int *update)
+{
+	if (le16_to_cpu(resp->rq_cons) == qp->rq.wqe_cons) {
+		consume_cqe(cq);
+		*update |= 1;
+	}
+}
+
+static int qedr_poll_cq_resp(struct qedr_dev *dev, struct qedr_qp *qp,
+			     struct qedr_cq *cq, int num_entries,
+			     struct ib_wc *wc, struct rdma_cqe_responder *resp,
+			     int *update)
+{
+	int cnt;
+
+	if (resp->status == RDMA_CQE_RESP_STS_WORK_REQUEST_FLUSHED_ERR) {
+		cnt = process_resp_flush(qp, cq, num_entries, wc,
+					 resp->rq_cons);
+		try_consume_resp_cqe(cq, qp, resp, update);
+	} else {
+		cnt = process_resp_one(dev, qp, cq, wc, resp);
+		consume_cqe(cq);
+		*update |= 1;
+	}
+
+	return cnt;
+}
+
+static void try_consume_req_cqe(struct qedr_cq *cq, struct qedr_qp *qp,
+				struct rdma_cqe_requester *req, int *update)
+{
+	if (le16_to_cpu(req->sq_cons) == qp->sq.wqe_cons) {
+		consume_cqe(cq);
+		*update |= 1;
+	}
+}
+
+int qedr_poll_cq(struct ib_cq *ibcq, int num_entries, struct ib_wc *wc)
+{
+	struct qedr_dev *dev = get_qedr_dev(ibcq->device);
+	struct qedr_cq *cq = get_qedr_cq(ibcq);
+	union rdma_cqe *cqe = cq->latest_cqe;
+	u32 old_cons, new_cons;
+	unsigned long flags;
+	int update = 0;
+	int done = 0;
+
+	spin_lock_irqsave(&cq->cq_lock, flags);
+	old_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
+	while (num_entries && is_valid_cqe(cq, cqe)) {
+		struct qedr_qp *qp;
+		int cnt = 0;
+
+		/* prevent speculative reads of any field of CQE */
+		rmb();
+
+		qp = cqe_get_qp(cqe);
+		if (!qp) {
+			WARN(1, "Error: CQE QP pointer is NULL. CQE=%p\n", cqe);
+			break;
+		}
+
+		wc->qp = &qp->ibqp;
+
+		switch (cqe_get_type(cqe)) {
+		case RDMA_CQE_TYPE_REQUESTER:
+			cnt = qedr_poll_cq_req(dev, qp, cq, num_entries, wc,
+					       &cqe->req);
+			try_consume_req_cqe(cq, qp, &cqe->req, &update);
+			break;
+		case RDMA_CQE_TYPE_RESPONDER_RQ:
+			cnt = qedr_poll_cq_resp(dev, qp, cq, num_entries, wc,
+						&cqe->resp, &update);
+			break;
+		case RDMA_CQE_TYPE_INVALID:
+		default:
+			DP_ERR(dev, "Error: invalid CQE type = %d\n",
+			       cqe_get_type(cqe));
+		}
+		num_entries -= cnt;
+		wc += cnt;
+		done += cnt;
+
+		cqe = get_cqe(cq);
+	}
+	new_cons = qed_chain_get_cons_idx_u32(&cq->pbl);
+
+	cq->cq_cons += new_cons - old_cons;
+
+	if (update)
+		/* doorbell notifies abount latest VALID entry,
+		 * but chain already point to the next INVALID one
+		 */
+		doorbell_cq(cq, cq->cq_cons - 1, cq->arm_flags);
+
+	spin_unlock_irqrestore(&cq->cq_lock, flags);
+	return done;
+}

drivers/infiniband/hw/qedr/verbs.h

@@ -81,4 +81,9 @@ int qedr_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg,
 
 struct ib_mr *qedr_alloc_mr(struct ib_pd *pd, enum ib_mr_type mr_type,
 			    u32 max_num_sg);
+int qedr_poll_cq(struct ib_cq *, int num_entries, struct ib_wc *wc);
+int qedr_post_send(struct ib_qp *, struct ib_send_wr *,
+		   struct ib_send_wr **bad_wr);
+int qedr_post_recv(struct ib_qp *, struct ib_recv_wr *,
+		   struct ib_recv_wr **bad_wr);
 #endif