qedr: Add support for QP verbs
Add support for Queue Pair verbs which adds, deletes,
modifies and queries Queue Pairs.
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>
diff --git a/drivers/infiniband/hw/qedr/main.c b/drivers/infiniband/hw/qedr/main.c
index 35928ab..13ba47b 100644
--- a/drivers/infiniband/hw/qedr/main.c
+++ b/drivers/infiniband/hw/qedr/main.c
@@ -48,6 +48,8 @@
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(QEDR_MODULE_VERSION);
+#define QEDR_WQ_MULTIPLIER_DFT (3)
+
void qedr_ib_dispatch_event(struct qedr_dev *dev, u8 port_num,
enum ib_event_type type)
{
@@ -94,7 +96,11 @@
QEDR_UVERBS(CREATE_CQ) |
QEDR_UVERBS(RESIZE_CQ) |
QEDR_UVERBS(DESTROY_CQ) |
- QEDR_UVERBS(REQ_NOTIFY_CQ);
+ QEDR_UVERBS(REQ_NOTIFY_CQ) |
+ QEDR_UVERBS(CREATE_QP) |
+ QEDR_UVERBS(MODIFY_QP) |
+ QEDR_UVERBS(QUERY_QP) |
+ QEDR_UVERBS(DESTROY_QP);
dev->ibdev.phys_port_cnt = 1;
dev->ibdev.num_comp_vectors = dev->num_cnq;
@@ -120,6 +126,11 @@
dev->ibdev.resize_cq = qedr_resize_cq;
dev->ibdev.req_notify_cq = qedr_arm_cq;
+ dev->ibdev.create_qp = qedr_create_qp;
+ dev->ibdev.modify_qp = qedr_modify_qp;
+ dev->ibdev.query_qp = qedr_query_qp;
+ dev->ibdev.destroy_qp = qedr_destroy_qp;
+
dev->ibdev.query_pkey = qedr_query_pkey;
dev->ibdev.dma_device = &dev->pdev->dev;
@@ -630,6 +641,8 @@
goto init_err;
}
+ dev->wq_multiplier = QEDR_WQ_MULTIPLIER_DFT;
+
qedr_pci_set_atomic(dev, pdev);
rc = qedr_alloc_resources(dev);
diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h
index 9e2846a..e9fe941 100644
--- a/drivers/infiniband/hw/qedr/qedr.h
+++ b/drivers/infiniband/hw/qedr/qedr.h
@@ -52,6 +52,9 @@
#define QEDR_MSG_MISC "MISC"
#define QEDR_MSG_CQ " CQ"
#define QEDR_MSG_MR " MR"
+#define QEDR_MSG_RQ " RQ"
+#define QEDR_MSG_SQ " SQ"
+#define QEDR_MSG_QP " QP"
#define QEDR_CQ_MAGIC_NUMBER (0x11223344)
@@ -143,6 +146,8 @@
u32 dp_module;
u8 dp_level;
u8 num_hwfns;
+ uint wq_multiplier;
+
};
#define QEDR_MAX_SQ_PBL (0x8000)
@@ -272,6 +277,122 @@
struct list_head entry;
};
+union db_prod32 {
+ struct rdma_pwm_val16_data data;
+ u32 raw;
+};
+
+struct qedr_qp_hwq_info {
+ /* WQE Elements */
+ struct qed_chain pbl;
+ u64 p_phys_addr_tbl;
+ u32 max_sges;
+
+ /* WQE */
+ u16 prod;
+ u16 cons;
+ u16 wqe_cons;
+ u16 max_wr;
+
+ /* DB */
+ void __iomem *db;
+ union db_prod32 db_data;
+};
+
+#define QEDR_INC_SW_IDX(p_info, index) \
+ do { \
+ p_info->index = (p_info->index + 1) & \
+ qed_chain_get_capacity(p_info->pbl) \
+ } while (0)
+
+enum qedr_qp_err_bitmap {
+ QEDR_QP_ERR_SQ_FULL = 1,
+ QEDR_QP_ERR_RQ_FULL = 2,
+ QEDR_QP_ERR_BAD_SR = 4,
+ QEDR_QP_ERR_BAD_RR = 8,
+ QEDR_QP_ERR_SQ_PBL_FULL = 16,
+ QEDR_QP_ERR_RQ_PBL_FULL = 32,
+};
+
+struct qedr_qp {
+ struct ib_qp ibqp; /* must be first */
+ struct qedr_dev *dev;
+
+ struct qedr_qp_hwq_info sq;
+ struct qedr_qp_hwq_info rq;
+
+ u32 max_inline_data;
+
+ /* Lock for QP's */
+ spinlock_t q_lock;
+ struct qedr_cq *sq_cq;
+ struct qedr_cq *rq_cq;
+ struct qedr_srq *srq;
+ enum qed_roce_qp_state state;
+ u32 id;
+ struct qedr_pd *pd;
+ enum ib_qp_type qp_type;
+ struct qed_rdma_qp *qed_qp;
+ u32 qp_id;
+ u16 icid;
+ u16 mtu;
+ int sgid_idx;
+ u32 rq_psn;
+ u32 sq_psn;
+ u32 qkey;
+ u32 dest_qp_num;
+
+ /* Relevant to qps created from kernel space only (ULPs) */
+ u8 prev_wqe_size;
+ u16 wqe_cons;
+ u32 err_bitmap;
+ bool signaled;
+
+ /* SQ shadow */
+ struct {
+ u64 wr_id;
+ enum ib_wc_opcode opcode;
+ u32 bytes_len;
+ u8 wqe_size;
+ bool signaled;
+ dma_addr_t icrc_mapping;
+ u32 *icrc;
+ struct qedr_mr *mr;
+ } *wqe_wr_id;
+
+ /* RQ shadow */
+ struct {
+ u64 wr_id;
+ struct ib_sge sg_list[RDMA_MAX_SGE_PER_RQ_WQE];
+ u8 wqe_size;
+
+ u16 vlan_id;
+ int rc;
+ } *rqe_wr_id;
+
+ /* Relevant to qps created from user space only (applications) */
+ struct qedr_userq usq;
+ struct qedr_userq urq;
+};
+
+static inline int qedr_get_dmac(struct qedr_dev *dev,
+ struct ib_ah_attr *ah_attr, u8 *mac_addr)
+{
+ union ib_gid zero_sgid = { { 0 } };
+ struct in6_addr in6;
+
+ if (!memcmp(&ah_attr->grh.dgid, &zero_sgid, sizeof(union ib_gid))) {
+ DP_ERR(dev, "Local port GID not supported\n");
+ eth_zero_addr(mac_addr);
+ return -EINVAL;
+ }
+
+ memcpy(&in6, ah_attr->grh.dgid.raw, sizeof(in6));
+ ether_addr_copy(mac_addr, ah_attr->dmac);
+
+ return 0;
+}
+
static inline
struct qedr_ucontext *get_qedr_ucontext(struct ib_ucontext *ibucontext)
{
@@ -293,4 +414,8 @@
return container_of(ibcq, struct qedr_cq, ibcq);
}
+static inline struct qedr_qp *get_qedr_qp(struct ib_qp *ibqp)
+{
+ return container_of(ibqp, struct qedr_qp, ibqp);
+}
#endif
diff --git a/drivers/infiniband/hw/qedr/qedr_cm.h b/drivers/infiniband/hw/qedr/qedr_cm.h
new file mode 100644
index 0000000..b8a8b76
--- /dev/null
+++ b/drivers/infiniband/hw/qedr/qedr_cm.h
@@ -0,0 +1,40 @@
+/* QLogic qedr NIC Driver
+ * Copyright (c) 2015-2016 QLogic Corporation
+ *
+ * This software is available to you under a choice of one of two
+ * licenses. You may choose to be licensed under the terms of the GNU
+ * General Public License (GPL) Version 2, available from the file
+ * COPYING in the main directory of this source tree, or the
+ * OpenIB.org BSD license below:
+ *
+ * Redistribution and use in source and binary forms, with or
+ * without modification, are permitted provided that the following
+ * conditions are met:
+ *
+ * - Redistributions of source code must retain the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following
+ * disclaimer in the documentation and /or other materials
+ * provided with the distribution.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
+ * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
+ * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#ifndef LINUX_QEDR_CM_H_
+#define LINUX_QEDR_CM_H_
+
+static inline u32 qedr_get_ipv4_from_gid(u8 *gid)
+{
+ return *(u32 *)(void *)&gid[12];
+}
+
+#endif
diff --git a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
index 84f6520..4770559 100644
--- a/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
+++ b/drivers/infiniband/hw/qedr/qedr_hsi_rdma.h
@@ -158,6 +158,17 @@
__le32 l_key;
};
+/* Rdma doorbell data for SQ and RQ */
+struct rdma_pwm_val16_data {
+ __le16 icid;
+ __le16 value;
+};
+
+union rdma_pwm_val16_data_union {
+ struct rdma_pwm_val16_data as_struct;
+ __le32 as_dword;
+};
+
/* Rdma doorbell data for CQ */
struct rdma_pwm_val32_data {
__le16 icid;
diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c
index b525c6c..a0d1c5f 100644
--- a/drivers/infiniband/hw/qedr/verbs.c
+++ b/drivers/infiniband/hw/qedr/verbs.c
@@ -48,6 +48,7 @@
#include "qedr.h"
#include "verbs.h"
#include <rdma/qedr-abi.h>
+#include "qedr_cm.h"
#define DB_ADDR_SHIFT(addr) ((addr) << DB_PWM_ADDR_OFFSET_SHIFT)
@@ -993,3 +994,1091 @@
return 0;
}
+
+static inline int get_gid_info_from_table(struct ib_qp *ibqp,
+ struct ib_qp_attr *attr,
+ int attr_mask,
+ struct qed_rdma_modify_qp_in_params
+ *qp_params)
+{
+ enum rdma_network_type nw_type;
+ struct ib_gid_attr gid_attr;
+ union ib_gid gid;
+ u32 ipv4_addr;
+ int rc = 0;
+ int i;
+
+ rc = ib_get_cached_gid(ibqp->device, attr->ah_attr.port_num,
+ attr->ah_attr.grh.sgid_index, &gid, &gid_attr);
+ if (rc)
+ return rc;
+
+ if (!memcmp(&gid, &zgid, sizeof(gid)))
+ return -ENOENT;
+
+ if (gid_attr.ndev) {
+ qp_params->vlan_id = rdma_vlan_dev_vlan_id(gid_attr.ndev);
+
+ dev_put(gid_attr.ndev);
+ nw_type = ib_gid_to_network_type(gid_attr.gid_type, &gid);
+ switch (nw_type) {
+ case RDMA_NETWORK_IPV6:
+ memcpy(&qp_params->sgid.bytes[0], &gid.raw[0],
+ sizeof(qp_params->sgid));
+ memcpy(&qp_params->dgid.bytes[0],
+ &attr->ah_attr.grh.dgid,
+ sizeof(qp_params->dgid));
+ qp_params->roce_mode = ROCE_V2_IPV6;
+ SET_FIELD(qp_params->modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_ROCE_MODE, 1);
+ break;
+ case RDMA_NETWORK_IB:
+ memcpy(&qp_params->sgid.bytes[0], &gid.raw[0],
+ sizeof(qp_params->sgid));
+ memcpy(&qp_params->dgid.bytes[0],
+ &attr->ah_attr.grh.dgid,
+ sizeof(qp_params->dgid));
+ qp_params->roce_mode = ROCE_V1;
+ break;
+ case RDMA_NETWORK_IPV4:
+ memset(&qp_params->sgid, 0, sizeof(qp_params->sgid));
+ memset(&qp_params->dgid, 0, sizeof(qp_params->dgid));
+ ipv4_addr = qedr_get_ipv4_from_gid(gid.raw);
+ qp_params->sgid.ipv4_addr = ipv4_addr;
+ ipv4_addr =
+ qedr_get_ipv4_from_gid(attr->ah_attr.grh.dgid.raw);
+ qp_params->dgid.ipv4_addr = ipv4_addr;
+ SET_FIELD(qp_params->modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_ROCE_MODE, 1);
+ qp_params->roce_mode = ROCE_V2_IPV4;
+ break;
+ }
+ }
+
+ for (i = 0; i < 4; i++) {
+ qp_params->sgid.dwords[i] = ntohl(qp_params->sgid.dwords[i]);
+ qp_params->dgid.dwords[i] = ntohl(qp_params->dgid.dwords[i]);
+ }
+
+ if (qp_params->vlan_id >= VLAN_CFI_MASK)
+ qp_params->vlan_id = 0;
+
+ return 0;
+}
+
+static void qedr_cleanup_user_sq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+ qedr_free_pbl(dev, &qp->usq.pbl_info, qp->usq.pbl_tbl);
+ ib_umem_release(qp->usq.umem);
+}
+
+static void qedr_cleanup_user_rq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+ qedr_free_pbl(dev, &qp->urq.pbl_info, qp->urq.pbl_tbl);
+ ib_umem_release(qp->urq.umem);
+}
+
+static void qedr_cleanup_kernel_sq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+ dev->ops->common->chain_free(dev->cdev, &qp->sq.pbl);
+ kfree(qp->wqe_wr_id);
+}
+
+static void qedr_cleanup_kernel_rq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+ dev->ops->common->chain_free(dev->cdev, &qp->rq.pbl);
+ kfree(qp->rqe_wr_id);
+}
+
+static int qedr_check_qp_attrs(struct ib_pd *ibpd, struct qedr_dev *dev,
+ struct ib_qp_init_attr *attrs)
+{
+ struct qedr_device_attr *qattr = &dev->attr;
+
+ /* QP0... attrs->qp_type == IB_QPT_GSI */
+ if (attrs->qp_type != IB_QPT_RC && attrs->qp_type != IB_QPT_GSI) {
+ DP_DEBUG(dev, QEDR_MSG_QP,
+ "create qp: unsupported qp type=0x%x requested\n",
+ attrs->qp_type);
+ return -EINVAL;
+ }
+
+ if (attrs->cap.max_send_wr > qattr->max_sqe) {
+ DP_ERR(dev,
+ "create qp: cannot create a SQ with %d elements (max_send_wr=0x%x)\n",
+ attrs->cap.max_send_wr, qattr->max_sqe);
+ return -EINVAL;
+ }
+
+ if (attrs->cap.max_inline_data > qattr->max_inline) {
+ DP_ERR(dev,
+ "create qp: unsupported inline data size=0x%x requested (max_inline=0x%x)\n",
+ attrs->cap.max_inline_data, qattr->max_inline);
+ return -EINVAL;
+ }
+
+ if (attrs->cap.max_send_sge > qattr->max_sge) {
+ DP_ERR(dev,
+ "create qp: unsupported send_sge=0x%x requested (max_send_sge=0x%x)\n",
+ attrs->cap.max_send_sge, qattr->max_sge);
+ return -EINVAL;
+ }
+
+ if (attrs->cap.max_recv_sge > qattr->max_sge) {
+ DP_ERR(dev,
+ "create qp: unsupported recv_sge=0x%x requested (max_recv_sge=0x%x)\n",
+ attrs->cap.max_recv_sge, qattr->max_sge);
+ return -EINVAL;
+ }
+
+ /* Unprivileged user space cannot create special QP */
+ if (ibpd->uobject && attrs->qp_type == IB_QPT_GSI) {
+ DP_ERR(dev,
+ "create qp: userspace can't create special QPs of type=0x%x\n",
+ attrs->qp_type);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+static void qedr_copy_rq_uresp(struct qedr_create_qp_uresp *uresp,
+ struct qedr_qp *qp)
+{
+ uresp->rq_db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD);
+ uresp->rq_icid = qp->icid;
+}
+
+static void qedr_copy_sq_uresp(struct qedr_create_qp_uresp *uresp,
+ struct qedr_qp *qp)
+{
+ uresp->sq_db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD);
+ uresp->sq_icid = qp->icid + 1;
+}
+
+static int qedr_copy_qp_uresp(struct qedr_dev *dev,
+ struct qedr_qp *qp, struct ib_udata *udata)
+{
+ struct qedr_create_qp_uresp uresp;
+ int rc;
+
+ memset(&uresp, 0, sizeof(uresp));
+ qedr_copy_sq_uresp(&uresp, qp);
+ qedr_copy_rq_uresp(&uresp, qp);
+
+ uresp.atomic_supported = dev->atomic_cap != IB_ATOMIC_NONE;
+ uresp.qp_id = qp->qp_id;
+
+ rc = ib_copy_to_udata(udata, &uresp, sizeof(uresp));
+ if (rc)
+ DP_ERR(dev,
+ "create qp: failed a copy to user space with qp icid=0x%x.\n",
+ qp->icid);
+
+ return rc;
+}
+
+static void qedr_set_qp_init_params(struct qedr_dev *dev,
+ struct qedr_qp *qp,
+ struct qedr_pd *pd,
+ struct ib_qp_init_attr *attrs)
+{
+ qp->pd = pd;
+
+ spin_lock_init(&qp->q_lock);
+
+ qp->qp_type = attrs->qp_type;
+ qp->max_inline_data = attrs->cap.max_inline_data;
+ qp->sq.max_sges = attrs->cap.max_send_sge;
+ qp->state = QED_ROCE_QP_STATE_RESET;
+ qp->signaled = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR) ? true : false;
+ qp->sq_cq = get_qedr_cq(attrs->send_cq);
+ qp->rq_cq = get_qedr_cq(attrs->recv_cq);
+ qp->dev = dev;
+
+ DP_DEBUG(dev, QEDR_MSG_QP,
+ "QP params:\tpd = %d, qp_type = %d, max_inline_data = %d, state = %d, signaled = %d, use_srq=%d\n",
+ pd->pd_id, qp->qp_type, qp->max_inline_data,
+ qp->state, qp->signaled, (attrs->srq) ? 1 : 0);
+ DP_DEBUG(dev, QEDR_MSG_QP,
+ "SQ params:\tsq_max_sges = %d, sq_cq_id = %d\n",
+ qp->sq.max_sges, qp->sq_cq->icid);
+ qp->rq.max_sges = attrs->cap.max_recv_sge;
+ DP_DEBUG(dev, QEDR_MSG_QP,
+ "RQ params:\trq_max_sges = %d, rq_cq_id = %d\n",
+ qp->rq.max_sges, qp->rq_cq->icid);
+}
+
+static inline void
+qedr_init_qp_user_params(struct qed_rdma_create_qp_in_params *params,
+ struct qedr_create_qp_ureq *ureq)
+{
+ /* QP handle to be written in CQE */
+ params->qp_handle_lo = ureq->qp_handle_lo;
+ params->qp_handle_hi = ureq->qp_handle_hi;
+}
+
+static inline void
+qedr_init_qp_kernel_doorbell_sq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+ qp->sq.db = dev->db_addr +
+ DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD);
+ qp->sq.db_data.data.icid = qp->icid + 1;
+}
+
+static inline void
+qedr_init_qp_kernel_doorbell_rq(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+ qp->rq.db = dev->db_addr +
+ DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD);
+ qp->rq.db_data.data.icid = qp->icid;
+}
+
+static inline int
+qedr_init_qp_kernel_params_rq(struct qedr_dev *dev,
+ struct qedr_qp *qp, struct ib_qp_init_attr *attrs)
+{
+ /* Allocate driver internal RQ array */
+ qp->rqe_wr_id = kcalloc(qp->rq.max_wr, sizeof(*qp->rqe_wr_id),
+ GFP_KERNEL);
+ if (!qp->rqe_wr_id)
+ return -ENOMEM;
+
+ DP_DEBUG(dev, QEDR_MSG_QP, "RQ max_wr set to %d.\n", qp->rq.max_wr);
+
+ return 0;
+}
+
+static inline int
+qedr_init_qp_kernel_params_sq(struct qedr_dev *dev,
+ struct qedr_qp *qp,
+ struct ib_qp_init_attr *attrs,
+ struct qed_rdma_create_qp_in_params *params)
+{
+ u32 temp_max_wr;
+
+ /* Allocate driver internal SQ array */
+ temp_max_wr = attrs->cap.max_send_wr * dev->wq_multiplier;
+ temp_max_wr = min_t(u32, temp_max_wr, dev->attr.max_sqe);
+
+ /* temp_max_wr < attr->max_sqe < u16 so the casting is safe */
+ qp->sq.max_wr = (u16)temp_max_wr;
+ qp->wqe_wr_id = kcalloc(qp->sq.max_wr, sizeof(*qp->wqe_wr_id),
+ GFP_KERNEL);
+ if (!qp->wqe_wr_id)
+ return -ENOMEM;
+
+ DP_DEBUG(dev, QEDR_MSG_QP, "SQ max_wr set to %d.\n", qp->sq.max_wr);
+
+ /* QP handle to be written in CQE */
+ params->qp_handle_lo = lower_32_bits((uintptr_t)qp);
+ params->qp_handle_hi = upper_32_bits((uintptr_t)qp);
+
+ return 0;
+}
+
+static inline int qedr_init_qp_kernel_sq(struct qedr_dev *dev,
+ struct qedr_qp *qp,
+ struct ib_qp_init_attr *attrs)
+{
+ u32 n_sq_elems, n_sq_entries;
+ int rc;
+
+ /* A single work request may take up to QEDR_MAX_SQ_WQE_SIZE elements in
+ * the ring. The ring should allow at least a single WR, even if the
+ * user requested none, due to allocation issues.
+ */
+ n_sq_entries = attrs->cap.max_send_wr;
+ n_sq_entries = min_t(u32, n_sq_entries, dev->attr.max_sqe);
+ n_sq_entries = max_t(u32, n_sq_entries, 1);
+ n_sq_elems = n_sq_entries * QEDR_MAX_SQE_ELEMENTS_PER_SQE;
+ rc = dev->ops->common->chain_alloc(dev->cdev,
+ QED_CHAIN_USE_TO_PRODUCE,
+ QED_CHAIN_MODE_PBL,
+ QED_CHAIN_CNT_TYPE_U32,
+ n_sq_elems,
+ QEDR_SQE_ELEMENT_SIZE,
+ &qp->sq.pbl);
+ if (rc) {
+ DP_ERR(dev, "failed to allocate QP %p SQ\n", qp);
+ return rc;
+ }
+
+ DP_DEBUG(dev, QEDR_MSG_SQ,
+ "SQ Pbl base addr = %llx max_send_wr=%d max_wr=%d capacity=%d, rc=%d\n",
+ qed_chain_get_pbl_phys(&qp->sq.pbl), attrs->cap.max_send_wr,
+ n_sq_entries, qed_chain_get_capacity(&qp->sq.pbl), rc);
+ return 0;
+}
+
+static inline int qedr_init_qp_kernel_rq(struct qedr_dev *dev,
+ struct qedr_qp *qp,
+ struct ib_qp_init_attr *attrs)
+{
+ u32 n_rq_elems, n_rq_entries;
+ int rc;
+
+ /* A single work request may take up to QEDR_MAX_RQ_WQE_SIZE elements in
+ * the ring. There ring should allow at least a single WR, even if the
+ * user requested none, due to allocation issues.
+ */
+ n_rq_entries = max_t(u32, attrs->cap.max_recv_wr, 1);
+ n_rq_elems = n_rq_entries * QEDR_MAX_RQE_ELEMENTS_PER_RQE;
+ rc = dev->ops->common->chain_alloc(dev->cdev,
+ QED_CHAIN_USE_TO_CONSUME_PRODUCE,
+ QED_CHAIN_MODE_PBL,
+ QED_CHAIN_CNT_TYPE_U32,
+ n_rq_elems,
+ QEDR_RQE_ELEMENT_SIZE,
+ &qp->rq.pbl);
+
+ if (rc) {
+ DP_ERR(dev, "failed to allocate memory for QP %p RQ\n", qp);
+ return -ENOMEM;
+ }
+
+ DP_DEBUG(dev, QEDR_MSG_RQ,
+ "RQ Pbl base addr = %llx max_recv_wr=%d max_wr=%d capacity=%d, rc=%d\n",
+ qed_chain_get_pbl_phys(&qp->rq.pbl), attrs->cap.max_recv_wr,
+ n_rq_entries, qed_chain_get_capacity(&qp->rq.pbl), rc);
+
+ /* n_rq_entries < u16 so the casting is safe */
+ qp->rq.max_wr = (u16)n_rq_entries;
+
+ return 0;
+}
+
+static inline void
+qedr_init_qp_in_params_sq(struct qedr_dev *dev,
+ struct qedr_pd *pd,
+ struct qedr_qp *qp,
+ struct ib_qp_init_attr *attrs,
+ struct ib_udata *udata,
+ struct qed_rdma_create_qp_in_params *params)
+{
+ /* QP handle to be written in an async event */
+ params->qp_handle_async_lo = lower_32_bits((uintptr_t)qp);
+ params->qp_handle_async_hi = upper_32_bits((uintptr_t)qp);
+
+ params->signal_all = (attrs->sq_sig_type == IB_SIGNAL_ALL_WR);
+ params->fmr_and_reserved_lkey = !udata;
+ params->pd = pd->pd_id;
+ params->dpi = pd->uctx ? pd->uctx->dpi : dev->dpi;
+ params->sq_cq_id = get_qedr_cq(attrs->send_cq)->icid;
+ params->max_sq_sges = 0;
+ params->stats_queue = 0;
+
+ if (udata) {
+ params->sq_num_pages = qp->usq.pbl_info.num_pbes;
+ params->sq_pbl_ptr = qp->usq.pbl_tbl->pa;
+ } else {
+ params->sq_num_pages = qed_chain_get_page_cnt(&qp->sq.pbl);
+ params->sq_pbl_ptr = qed_chain_get_pbl_phys(&qp->sq.pbl);
+ }
+}
+
+static inline void
+qedr_init_qp_in_params_rq(struct qedr_qp *qp,
+ struct ib_qp_init_attr *attrs,
+ struct ib_udata *udata,
+ struct qed_rdma_create_qp_in_params *params)
+{
+ params->rq_cq_id = get_qedr_cq(attrs->recv_cq)->icid;
+ params->srq_id = 0;
+ params->use_srq = false;
+
+ if (udata) {
+ params->rq_num_pages = qp->urq.pbl_info.num_pbes;
+ params->rq_pbl_ptr = qp->urq.pbl_tbl->pa;
+ } else {
+ params->rq_num_pages = qed_chain_get_page_cnt(&qp->rq.pbl);
+ params->rq_pbl_ptr = qed_chain_get_pbl_phys(&qp->rq.pbl);
+ }
+}
+
+static inline void qedr_qp_user_print(struct qedr_dev *dev, struct qedr_qp *qp)
+{
+ DP_DEBUG(dev, QEDR_MSG_QP,
+ "create qp: successfully created user QP. qp=%p, sq_addr=0x%llx, sq_len=%zd, rq_addr=0x%llx, rq_len=%zd\n",
+ qp, qp->usq.buf_addr, qp->usq.buf_len, qp->urq.buf_addr,
+ qp->urq.buf_len);
+}
+
+static inline int qedr_init_user_qp(struct ib_ucontext *ib_ctx,
+ struct qedr_dev *dev,
+ struct qedr_qp *qp,
+ struct qedr_create_qp_ureq *ureq)
+{
+ int rc;
+
+ /* SQ - read access only (0), dma sync not required (0) */
+ rc = qedr_init_user_queue(ib_ctx, dev, &qp->usq, ureq->sq_addr,
+ ureq->sq_len, 0, 0);
+ if (rc)
+ return rc;
+
+ /* RQ - read access only (0), dma sync not required (0) */
+ rc = qedr_init_user_queue(ib_ctx, dev, &qp->urq, ureq->rq_addr,
+ ureq->rq_len, 0, 0);
+
+ if (rc)
+ qedr_cleanup_user_sq(dev, qp);
+ return rc;
+}
+
+static inline int
+qedr_init_kernel_qp(struct qedr_dev *dev,
+ struct qedr_qp *qp,
+ struct ib_qp_init_attr *attrs,
+ struct qed_rdma_create_qp_in_params *params)
+{
+ int rc;
+
+ rc = qedr_init_qp_kernel_sq(dev, qp, attrs);
+ if (rc) {
+ DP_ERR(dev, "failed to init kernel QP %p SQ\n", qp);
+ return rc;
+ }
+
+ rc = qedr_init_qp_kernel_params_sq(dev, qp, attrs, params);
+ if (rc) {
+ dev->ops->common->chain_free(dev->cdev, &qp->sq.pbl);
+ DP_ERR(dev, "failed to init kernel QP %p SQ params\n", qp);
+ return rc;
+ }
+
+ rc = qedr_init_qp_kernel_rq(dev, qp, attrs);
+ if (rc) {
+ qedr_cleanup_kernel_sq(dev, qp);
+ DP_ERR(dev, "failed to init kernel QP %p RQ\n", qp);
+ return rc;
+ }
+
+ rc = qedr_init_qp_kernel_params_rq(dev, qp, attrs);
+ if (rc) {
+ DP_ERR(dev, "failed to init kernel QP %p RQ params\n", qp);
+ qedr_cleanup_kernel_sq(dev, qp);
+ dev->ops->common->chain_free(dev->cdev, &qp->rq.pbl);
+ return rc;
+ }
+
+ return rc;
+}
+
+struct ib_qp *qedr_create_qp(struct ib_pd *ibpd,
+ struct ib_qp_init_attr *attrs,
+ struct ib_udata *udata)
+{
+ struct qedr_dev *dev = get_qedr_dev(ibpd->device);
+ struct qed_rdma_create_qp_out_params out_params;
+ struct qed_rdma_create_qp_in_params in_params;
+ struct qedr_pd *pd = get_qedr_pd(ibpd);
+ struct ib_ucontext *ib_ctx = NULL;
+ struct qedr_ucontext *ctx = NULL;
+ struct qedr_create_qp_ureq ureq;
+ struct qedr_qp *qp;
+ int rc = 0;
+
+ DP_DEBUG(dev, QEDR_MSG_QP, "create qp: called from %s, pd=%p\n",
+ udata ? "user library" : "kernel", pd);
+
+ rc = qedr_check_qp_attrs(ibpd, dev, attrs);
+ if (rc)
+ return ERR_PTR(rc);
+
+ qp = kzalloc(sizeof(*qp), GFP_KERNEL);
+ if (!qp)
+ return ERR_PTR(-ENOMEM);
+
+ if (attrs->srq)
+ return ERR_PTR(-EINVAL);
+
+ DP_DEBUG(dev, QEDR_MSG_QP,
+ "create qp: sq_cq=%p, sq_icid=%d, rq_cq=%p, rq_icid=%d\n",
+ get_qedr_cq(attrs->send_cq),
+ get_qedr_cq(attrs->send_cq)->icid,
+ get_qedr_cq(attrs->recv_cq),
+ get_qedr_cq(attrs->recv_cq)->icid);
+
+ qedr_set_qp_init_params(dev, qp, pd, attrs);
+
+ memset(&in_params, 0, sizeof(in_params));
+
+ if (udata) {
+ if (!(udata && ibpd->uobject && ibpd->uobject->context))
+ goto err0;
+
+ ib_ctx = ibpd->uobject->context;
+ ctx = get_qedr_ucontext(ib_ctx);
+
+ memset(&ureq, 0, sizeof(ureq));
+ if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) {
+ DP_ERR(dev,
+ "create qp: problem copying data from user space\n");
+ goto err0;
+ }
+
+ rc = qedr_init_user_qp(ib_ctx, dev, qp, &ureq);
+ if (rc)
+ goto err0;
+
+ qedr_init_qp_user_params(&in_params, &ureq);
+ } else {
+ rc = qedr_init_kernel_qp(dev, qp, attrs, &in_params);
+ if (rc)
+ goto err0;
+ }
+
+ qedr_init_qp_in_params_sq(dev, pd, qp, attrs, udata, &in_params);
+ qedr_init_qp_in_params_rq(qp, attrs, udata, &in_params);
+
+ qp->qed_qp = dev->ops->rdma_create_qp(dev->rdma_ctx,
+ &in_params, &out_params);
+
+ if (!qp->qed_qp)
+ goto err1;
+
+ qp->qp_id = out_params.qp_id;
+ qp->icid = out_params.icid;
+ qp->ibqp.qp_num = qp->qp_id;
+
+ if (udata) {
+ rc = qedr_copy_qp_uresp(dev, qp, udata);
+ if (rc)
+ goto err2;
+
+ qedr_qp_user_print(dev, qp);
+ } else {
+ qedr_init_qp_kernel_doorbell_sq(dev, qp);
+ qedr_init_qp_kernel_doorbell_rq(dev, qp);
+ }
+
+ DP_DEBUG(dev, QEDR_MSG_QP, "created %s space QP %p\n",
+ udata ? "user" : "kernel", qp);
+
+ return &qp->ibqp;
+
+err2:
+ rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
+ if (rc)
+ DP_ERR(dev, "create qp: fatal fault. rc=%d", rc);
+err1:
+ if (udata) {
+ qedr_cleanup_user_sq(dev, qp);
+ qedr_cleanup_user_rq(dev, qp);
+ } else {
+ qedr_cleanup_kernel_sq(dev, qp);
+ qedr_cleanup_kernel_rq(dev, qp);
+ }
+
+err0:
+ kfree(qp);
+
+ return ERR_PTR(-EFAULT);
+}
+
+enum ib_qp_state qedr_get_ibqp_state(enum qed_roce_qp_state qp_state)
+{
+ switch (qp_state) {
+ case QED_ROCE_QP_STATE_RESET:
+ return IB_QPS_RESET;
+ case QED_ROCE_QP_STATE_INIT:
+ return IB_QPS_INIT;
+ case QED_ROCE_QP_STATE_RTR:
+ return IB_QPS_RTR;
+ case QED_ROCE_QP_STATE_RTS:
+ return IB_QPS_RTS;
+ case QED_ROCE_QP_STATE_SQD:
+ return IB_QPS_SQD;
+ case QED_ROCE_QP_STATE_ERR:
+ return IB_QPS_ERR;
+ case QED_ROCE_QP_STATE_SQE:
+ return IB_QPS_SQE;
+ }
+ return IB_QPS_ERR;
+}
+
+enum qed_roce_qp_state qedr_get_state_from_ibqp(enum ib_qp_state qp_state)
+{
+ switch (qp_state) {
+ case IB_QPS_RESET:
+ return QED_ROCE_QP_STATE_RESET;
+ case IB_QPS_INIT:
+ return QED_ROCE_QP_STATE_INIT;
+ case IB_QPS_RTR:
+ return QED_ROCE_QP_STATE_RTR;
+ case IB_QPS_RTS:
+ return QED_ROCE_QP_STATE_RTS;
+ case IB_QPS_SQD:
+ return QED_ROCE_QP_STATE_SQD;
+ case IB_QPS_ERR:
+ return QED_ROCE_QP_STATE_ERR;
+ default:
+ return QED_ROCE_QP_STATE_ERR;
+ }
+}
+
+static void qedr_reset_qp_hwq_info(struct qedr_qp_hwq_info *qph)
+{
+ qed_chain_reset(&qph->pbl);
+ qph->prod = 0;
+ qph->cons = 0;
+ qph->wqe_cons = 0;
+ qph->db_data.data.value = cpu_to_le16(0);
+}
+
+static int qedr_update_qp_state(struct qedr_dev *dev,
+ struct qedr_qp *qp,
+ enum qed_roce_qp_state new_state)
+{
+ int status = 0;
+
+ if (new_state == qp->state)
+ return 1;
+
+ switch (qp->state) {
+ case QED_ROCE_QP_STATE_RESET:
+ switch (new_state) {
+ case QED_ROCE_QP_STATE_INIT:
+ qp->prev_wqe_size = 0;
+ qedr_reset_qp_hwq_info(&qp->sq);
+ qedr_reset_qp_hwq_info(&qp->rq);
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case QED_ROCE_QP_STATE_INIT:
+ switch (new_state) {
+ case QED_ROCE_QP_STATE_RTR:
+ /* Update doorbell (in case post_recv was
+ * done before move to RTR)
+ */
+ wmb();
+ writel(qp->rq.db_data.raw, qp->rq.db);
+ /* Make sure write takes effect */
+ mmiowb();
+ break;
+ case QED_ROCE_QP_STATE_ERR:
+ break;
+ default:
+ /* Invalid state change. */
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case QED_ROCE_QP_STATE_RTR:
+ /* RTR->XXX */
+ switch (new_state) {
+ case QED_ROCE_QP_STATE_RTS:
+ break;
+ case QED_ROCE_QP_STATE_ERR:
+ break;
+ default:
+ /* Invalid state change. */
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case QED_ROCE_QP_STATE_RTS:
+ /* RTS->XXX */
+ switch (new_state) {
+ case QED_ROCE_QP_STATE_SQD:
+ break;
+ case QED_ROCE_QP_STATE_ERR:
+ break;
+ default:
+ /* Invalid state change. */
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case QED_ROCE_QP_STATE_SQD:
+ /* SQD->XXX */
+ switch (new_state) {
+ case QED_ROCE_QP_STATE_RTS:
+ case QED_ROCE_QP_STATE_ERR:
+ break;
+ default:
+ /* Invalid state change. */
+ status = -EINVAL;
+ break;
+ };
+ break;
+ case QED_ROCE_QP_STATE_ERR:
+ /* ERR->XXX */
+ switch (new_state) {
+ case QED_ROCE_QP_STATE_RESET:
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+ break;
+ default:
+ status = -EINVAL;
+ break;
+ };
+
+ return status;
+}
+
+int qedr_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata)
+{
+ struct qedr_qp *qp = get_qedr_qp(ibqp);
+ struct qed_rdma_modify_qp_in_params qp_params = { 0 };
+ struct qedr_dev *dev = get_qedr_dev(&qp->dev->ibdev);
+ enum ib_qp_state old_qp_state, new_qp_state;
+ int rc = 0;
+
+ DP_DEBUG(dev, QEDR_MSG_QP,
+ "modify qp: qp %p attr_mask=0x%x, state=%d", qp, attr_mask,
+ attr->qp_state);
+
+ old_qp_state = qedr_get_ibqp_state(qp->state);
+ if (attr_mask & IB_QP_STATE)
+ new_qp_state = attr->qp_state;
+ else
+ new_qp_state = old_qp_state;
+
+ if (!ib_modify_qp_is_ok
+ (old_qp_state, new_qp_state, ibqp->qp_type, attr_mask,
+ IB_LINK_LAYER_ETHERNET)) {
+ DP_ERR(dev,
+ "modify qp: invalid attribute mask=0x%x specified for\n"
+ "qpn=0x%x of type=0x%x old_qp_state=0x%x, new_qp_state=0x%x\n",
+ attr_mask, qp->qp_id, ibqp->qp_type, old_qp_state,
+ new_qp_state);
+ rc = -EINVAL;
+ goto err;
+ }
+
+ /* Translate the masks... */
+ if (attr_mask & IB_QP_STATE) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_RDMA_MODIFY_QP_VALID_NEW_STATE, 1);
+ qp_params.new_state = qedr_get_state_from_ibqp(attr->qp_state);
+ }
+
+ if (attr_mask & IB_QP_EN_SQD_ASYNC_NOTIFY)
+ qp_params.sqd_async = true;
+
+ if (attr_mask & IB_QP_PKEY_INDEX) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_PKEY, 1);
+ if (attr->pkey_index >= QEDR_ROCE_PKEY_TABLE_LEN) {
+ rc = -EINVAL;
+ goto err;
+ }
+
+ qp_params.pkey = QEDR_ROCE_PKEY_DEFAULT;
+ }
+
+ if (attr_mask & IB_QP_QKEY)
+ qp->qkey = attr->qkey;
+
+ if (attr_mask & IB_QP_ACCESS_FLAGS) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_RDMA_MODIFY_QP_VALID_RDMA_OPS_EN, 1);
+ qp_params.incoming_rdma_read_en = attr->qp_access_flags &
+ IB_ACCESS_REMOTE_READ;
+ qp_params.incoming_rdma_write_en = attr->qp_access_flags &
+ IB_ACCESS_REMOTE_WRITE;
+ qp_params.incoming_atomic_en = attr->qp_access_flags &
+ IB_ACCESS_REMOTE_ATOMIC;
+ }
+
+ if (attr_mask & (IB_QP_AV | IB_QP_PATH_MTU)) {
+ if (attr_mask & IB_QP_PATH_MTU) {
+ if (attr->path_mtu < IB_MTU_256 ||
+ attr->path_mtu > IB_MTU_4096) {
+ pr_err("error: Only MTU sizes of 256, 512, 1024, 2048 and 4096 are supported by RoCE\n");
+ rc = -EINVAL;
+ goto err;
+ }
+ qp->mtu = min(ib_mtu_enum_to_int(attr->path_mtu),
+ ib_mtu_enum_to_int(iboe_get_mtu
+ (dev->ndev->mtu)));
+ }
+
+ if (!qp->mtu) {
+ qp->mtu =
+ ib_mtu_enum_to_int(iboe_get_mtu(dev->ndev->mtu));
+ pr_err("Fixing zeroed MTU to qp->mtu = %d\n", qp->mtu);
+ }
+
+ SET_FIELD(qp_params.modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_ADDRESS_VECTOR, 1);
+
+ qp_params.traffic_class_tos = attr->ah_attr.grh.traffic_class;
+ qp_params.flow_label = attr->ah_attr.grh.flow_label;
+ qp_params.hop_limit_ttl = attr->ah_attr.grh.hop_limit;
+
+ qp->sgid_idx = attr->ah_attr.grh.sgid_index;
+
+ rc = get_gid_info_from_table(ibqp, attr, attr_mask, &qp_params);
+ if (rc) {
+ DP_ERR(dev,
+ "modify qp: problems with GID index %d (rc=%d)\n",
+ attr->ah_attr.grh.sgid_index, rc);
+ return rc;
+ }
+
+ rc = qedr_get_dmac(dev, &attr->ah_attr,
+ qp_params.remote_mac_addr);
+ if (rc)
+ return rc;
+
+ qp_params.use_local_mac = true;
+ ether_addr_copy(qp_params.local_mac_addr, dev->ndev->dev_addr);
+
+ DP_DEBUG(dev, QEDR_MSG_QP, "dgid=%x:%x:%x:%x\n",
+ qp_params.dgid.dwords[0], qp_params.dgid.dwords[1],
+ qp_params.dgid.dwords[2], qp_params.dgid.dwords[3]);
+ DP_DEBUG(dev, QEDR_MSG_QP, "sgid=%x:%x:%x:%x\n",
+ qp_params.sgid.dwords[0], qp_params.sgid.dwords[1],
+ qp_params.sgid.dwords[2], qp_params.sgid.dwords[3]);
+ DP_DEBUG(dev, QEDR_MSG_QP, "remote_mac=[%pM]\n",
+ qp_params.remote_mac_addr);
+;
+
+ qp_params.mtu = qp->mtu;
+ qp_params.lb_indication = false;
+ }
+
+ if (!qp_params.mtu) {
+ /* Stay with current MTU */
+ if (qp->mtu)
+ qp_params.mtu = qp->mtu;
+ else
+ qp_params.mtu =
+ ib_mtu_enum_to_int(iboe_get_mtu(dev->ndev->mtu));
+ }
+
+ if (attr_mask & IB_QP_TIMEOUT) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_ACK_TIMEOUT, 1);
+
+ qp_params.ack_timeout = attr->timeout;
+ if (attr->timeout) {
+ u32 temp;
+
+ temp = 4096 * (1UL << attr->timeout) / 1000 / 1000;
+ /* FW requires [msec] */
+ qp_params.ack_timeout = temp;
+ } else {
+ /* Infinite */
+ qp_params.ack_timeout = 0;
+ }
+ }
+ if (attr_mask & IB_QP_RETRY_CNT) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_RETRY_CNT, 1);
+ qp_params.retry_cnt = attr->retry_cnt;
+ }
+
+ if (attr_mask & IB_QP_RNR_RETRY) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_RNR_RETRY_CNT, 1);
+ qp_params.rnr_retry_cnt = attr->rnr_retry;
+ }
+
+ if (attr_mask & IB_QP_RQ_PSN) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_RQ_PSN, 1);
+ qp_params.rq_psn = attr->rq_psn;
+ qp->rq_psn = attr->rq_psn;
+ }
+
+ if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC) {
+ if (attr->max_rd_atomic > dev->attr.max_qp_req_rd_atomic_resc) {
+ rc = -EINVAL;
+ DP_ERR(dev,
+ "unsupported max_rd_atomic=%d, supported=%d\n",
+ attr->max_rd_atomic,
+ dev->attr.max_qp_req_rd_atomic_resc);
+ goto err;
+ }
+
+ SET_FIELD(qp_params.modify_flags,
+ QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_REQ, 1);
+ qp_params.max_rd_atomic_req = attr->max_rd_atomic;
+ }
+
+ if (attr_mask & IB_QP_MIN_RNR_TIMER) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_MIN_RNR_NAK_TIMER, 1);
+ qp_params.min_rnr_nak_timer = attr->min_rnr_timer;
+ }
+
+ if (attr_mask & IB_QP_SQ_PSN) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_SQ_PSN, 1);
+ qp_params.sq_psn = attr->sq_psn;
+ qp->sq_psn = attr->sq_psn;
+ }
+
+ if (attr_mask & IB_QP_MAX_DEST_RD_ATOMIC) {
+ if (attr->max_dest_rd_atomic >
+ dev->attr.max_qp_resp_rd_atomic_resc) {
+ DP_ERR(dev,
+ "unsupported max_dest_rd_atomic=%d, supported=%d\n",
+ attr->max_dest_rd_atomic,
+ dev->attr.max_qp_resp_rd_atomic_resc);
+
+ rc = -EINVAL;
+ goto err;
+ }
+
+ SET_FIELD(qp_params.modify_flags,
+ QED_RDMA_MODIFY_QP_VALID_MAX_RD_ATOMIC_RESP, 1);
+ qp_params.max_rd_atomic_resp = attr->max_dest_rd_atomic;
+ }
+
+ if (attr_mask & IB_QP_DEST_QPN) {
+ SET_FIELD(qp_params.modify_flags,
+ QED_ROCE_MODIFY_QP_VALID_DEST_QP, 1);
+
+ qp_params.dest_qp = attr->dest_qp_num;
+ qp->dest_qp_num = attr->dest_qp_num;
+ }
+
+ if (qp->qp_type != IB_QPT_GSI)
+ rc = dev->ops->rdma_modify_qp(dev->rdma_ctx,
+ qp->qed_qp, &qp_params);
+
+ if (attr_mask & IB_QP_STATE) {
+ if ((qp->qp_type != IB_QPT_GSI) && (!udata))
+ qedr_update_qp_state(dev, qp, qp_params.new_state);
+ qp->state = qp_params.new_state;
+ }
+
+err:
+ return rc;
+}
+
+static int qedr_to_ib_qp_acc_flags(struct qed_rdma_query_qp_out_params *params)
+{
+ int ib_qp_acc_flags = 0;
+
+ if (params->incoming_rdma_write_en)
+ ib_qp_acc_flags |= IB_ACCESS_REMOTE_WRITE;
+ if (params->incoming_rdma_read_en)
+ ib_qp_acc_flags |= IB_ACCESS_REMOTE_READ;
+ if (params->incoming_atomic_en)
+ ib_qp_acc_flags |= IB_ACCESS_REMOTE_ATOMIC;
+ ib_qp_acc_flags |= IB_ACCESS_LOCAL_WRITE;
+ return ib_qp_acc_flags;
+}
+
+int qedr_query_qp(struct ib_qp *ibqp,
+ struct ib_qp_attr *qp_attr,
+ int attr_mask, struct ib_qp_init_attr *qp_init_attr)
+{
+ struct qed_rdma_query_qp_out_params params;
+ struct qedr_qp *qp = get_qedr_qp(ibqp);
+ struct qedr_dev *dev = qp->dev;
+ int rc = 0;
+
+ memset(¶ms, 0, sizeof(params));
+
+ rc = dev->ops->rdma_query_qp(dev->rdma_ctx, qp->qed_qp, ¶ms);
+ if (rc)
+ goto err;
+
+ memset(qp_attr, 0, sizeof(*qp_attr));
+ memset(qp_init_attr, 0, sizeof(*qp_init_attr));
+
+ qp_attr->qp_state = qedr_get_ibqp_state(params.state);
+ qp_attr->cur_qp_state = qedr_get_ibqp_state(params.state);
+ qp_attr->path_mtu = iboe_get_mtu(params.mtu);
+ qp_attr->path_mig_state = IB_MIG_MIGRATED;
+ qp_attr->rq_psn = params.rq_psn;
+ qp_attr->sq_psn = params.sq_psn;
+ qp_attr->dest_qp_num = params.dest_qp;
+
+ qp_attr->qp_access_flags = qedr_to_ib_qp_acc_flags(¶ms);
+
+ qp_attr->cap.max_send_wr = qp->sq.max_wr;
+ qp_attr->cap.max_recv_wr = qp->rq.max_wr;
+ qp_attr->cap.max_send_sge = qp->sq.max_sges;
+ qp_attr->cap.max_recv_sge = qp->rq.max_sges;
+ qp_attr->cap.max_inline_data = qp->max_inline_data;
+ qp_init_attr->cap = qp_attr->cap;
+
+ memcpy(&qp_attr->ah_attr.grh.dgid.raw[0], ¶ms.dgid.bytes[0],
+ sizeof(qp_attr->ah_attr.grh.dgid.raw));
+
+ qp_attr->ah_attr.grh.flow_label = params.flow_label;
+ qp_attr->ah_attr.grh.sgid_index = qp->sgid_idx;
+ qp_attr->ah_attr.grh.hop_limit = params.hop_limit_ttl;
+ qp_attr->ah_attr.grh.traffic_class = params.traffic_class_tos;
+
+ qp_attr->ah_attr.ah_flags = IB_AH_GRH;
+ qp_attr->ah_attr.port_num = 1;
+ qp_attr->ah_attr.sl = 0;
+ qp_attr->timeout = params.timeout;
+ qp_attr->rnr_retry = params.rnr_retry;
+ qp_attr->retry_cnt = params.retry_cnt;
+ qp_attr->min_rnr_timer = params.min_rnr_nak_timer;
+ qp_attr->pkey_index = params.pkey_index;
+ qp_attr->port_num = 1;
+ qp_attr->ah_attr.src_path_bits = 0;
+ qp_attr->ah_attr.static_rate = 0;
+ qp_attr->alt_pkey_index = 0;
+ qp_attr->alt_port_num = 0;
+ qp_attr->alt_timeout = 0;
+ memset(&qp_attr->alt_ah_attr, 0, sizeof(qp_attr->alt_ah_attr));
+
+ qp_attr->sq_draining = (params.state == QED_ROCE_QP_STATE_SQD) ? 1 : 0;
+ qp_attr->max_dest_rd_atomic = params.max_dest_rd_atomic;
+ qp_attr->max_rd_atomic = params.max_rd_atomic;
+ qp_attr->en_sqd_async_notify = (params.sqd_async) ? 1 : 0;
+
+ DP_DEBUG(dev, QEDR_MSG_QP, "QEDR_QUERY_QP: max_inline_data=%d\n",
+ qp_attr->cap.max_inline_data);
+
+err:
+ return rc;
+}
+
+int qedr_destroy_qp(struct ib_qp *ibqp)
+{
+ struct qedr_qp *qp = get_qedr_qp(ibqp);
+ struct qedr_dev *dev = qp->dev;
+ struct ib_qp_attr attr;
+ int attr_mask = 0;
+ int rc = 0;
+
+ DP_DEBUG(dev, QEDR_MSG_QP, "destroy qp: destroying %p, qp type=%d\n",
+ qp, qp->qp_type);
+
+ if (qp->state != (QED_ROCE_QP_STATE_RESET | QED_ROCE_QP_STATE_ERR |
+ QED_ROCE_QP_STATE_INIT)) {
+ attr.qp_state = IB_QPS_ERR;
+ attr_mask |= IB_QP_STATE;
+
+ /* Change the QP state to ERROR */
+ qedr_modify_qp(ibqp, &attr, attr_mask, NULL);
+ }
+
+ if (qp->qp_type != IB_QPT_GSI) {
+ rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp);
+ if (rc)
+ return rc;
+ }
+
+ if (ibqp->uobject && ibqp->uobject->context) {
+ qedr_cleanup_user_sq(dev, qp);
+ qedr_cleanup_user_rq(dev, qp);
+ } else {
+ qedr_cleanup_kernel_sq(dev, qp);
+ qedr_cleanup_kernel_rq(dev, qp);
+ }
+
+ kfree(qp);
+
+ return rc;
+}
diff --git a/drivers/infiniband/hw/qedr/verbs.h b/drivers/infiniband/hw/qedr/verbs.h
index 36c8a69..056d6cb 100644
--- a/drivers/infiniband/hw/qedr/verbs.h
+++ b/drivers/infiniband/hw/qedr/verbs.h
@@ -62,5 +62,12 @@
int qedr_resize_cq(struct ib_cq *, int cqe, struct ib_udata *);
int qedr_destroy_cq(struct ib_cq *);
int qedr_arm_cq(struct ib_cq *ibcq, enum ib_cq_notify_flags flags);
+struct ib_qp *qedr_create_qp(struct ib_pd *, struct ib_qp_init_attr *attrs,
+ struct ib_udata *);
+int qedr_modify_qp(struct ib_qp *, struct ib_qp_attr *attr,
+ int attr_mask, struct ib_udata *udata);
+int qedr_query_qp(struct ib_qp *, struct ib_qp_attr *qp_attr,
+ int qp_attr_mask, struct ib_qp_init_attr *);
+int qedr_destroy_qp(struct ib_qp *ibqp);
#endif
diff --git a/include/uapi/rdma/qedr-abi.h b/include/uapi/rdma/qedr-abi.h
index b0fc5f2..75c270d 100644
--- a/include/uapi/rdma/qedr-abi.h
+++ b/include/uapi/rdma/qedr-abi.h
@@ -69,4 +69,38 @@
__u16 icid;
};
+struct qedr_create_qp_ureq {
+ __u32 qp_handle_hi;
+ __u32 qp_handle_lo;
+
+ /* SQ */
+ /* user space virtual address of SQ buffer */
+ __u64 sq_addr;
+
+ /* length of SQ buffer */
+ __u64 sq_len;
+
+ /* RQ */
+ /* user space virtual address of RQ buffer */
+ __u64 rq_addr;
+
+ /* length of RQ buffer */
+ __u64 rq_len;
+};
+
+struct qedr_create_qp_uresp {
+ __u32 qp_id;
+ __u32 atomic_supported;
+
+ /* SQ */
+ __u32 sq_db_offset;
+ __u16 sq_icid;
+
+ /* RQ */
+ __u32 rq_db_offset;
+ __u16 rq_icid;
+
+ __u32 rq_db2_offset;
+};
+
#endif /* __QEDR_USER_H__ */