From 97f612509294aadabb8b431782794544df10cd13 Mon Sep 17 00:00:00 2001 From: Michal Kalderon Date: Wed, 30 Oct 2019 11:44:16 +0200 Subject: [PATCH] RDMA/qedr: Add doorbell overflow recovery support Use the doorbell recovery mechanism to register rdma related doorbells that will be restored in case there is a doorbell overflow attention. Link: https://lore.kernel.org/r/20191030094417.16866-8-michal.kalderon@marvell.com Signed-off-by: Ariel Elior Signed-off-by: Michal Kalderon Signed-off-by: Jason Gunthorpe --- drivers/infiniband/hw/qedr/qedr.h | 11 +- drivers/infiniband/hw/qedr/verbs.c | 314 ++++++++++++++++++++++++----- include/uapi/rdma/qedr-abi.h | 25 +++ 3 files changed, 300 insertions(+), 50 deletions(-) diff --git a/drivers/infiniband/hw/qedr/qedr.h b/drivers/infiniband/hw/qedr/qedr.h index 6ef39dccba21..639d521ed319 100644 --- a/drivers/infiniband/hw/qedr/qedr.h +++ b/drivers/infiniband/hw/qedr/qedr.h @@ -235,6 +235,7 @@ struct qedr_ucontext { u64 dpi_phys_addr; u32 dpi_size; u16 dpi; + bool db_rec; }; union db_prod64 { @@ -262,6 +263,11 @@ struct qedr_userq { struct qedr_pbl *pbl_tbl; u64 buf_addr; size_t buf_len; + + /* doorbell recovery */ + void __iomem *db_addr; + struct qedr_user_db_rec *db_rec_data; + struct rdma_user_mmap_entry *db_mmap_entry; }; struct qedr_cq { @@ -482,7 +488,10 @@ struct qedr_mr { struct qedr_user_mmap_entry { struct rdma_user_mmap_entry rdma_entry; struct qedr_dev *dev; - u64 io_address; + union { + u64 io_address; + void *address; + }; size_t length; u16 dpi; u8 mmap_flag; diff --git a/drivers/infiniband/hw/qedr/verbs.c b/drivers/infiniband/hw/qedr/verbs.c index 903cd934eb53..bc4a35b5581c 100644 --- a/drivers/infiniband/hw/qedr/verbs.c +++ b/drivers/infiniband/hw/qedr/verbs.c @@ -61,6 +61,7 @@ enum { QEDR_USER_MMAP_IO_WC = 0, + QEDR_USER_MMAP_PHYS_PAGE, }; static inline int qedr_ib_copy_to_udata(struct ib_udata *udata, void *src, @@ -267,6 +268,7 @@ int qedr_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) int rc; struct qedr_ucontext *ctx = get_qedr_ucontext(uctx); struct qedr_alloc_ucontext_resp uresp = {}; + struct qedr_alloc_ucontext_req ureq = {}; struct qedr_dev *dev = get_qedr_dev(ibdev); struct qed_rdma_add_user_out_params oparams; struct qedr_user_mmap_entry *entry; @@ -274,6 +276,17 @@ int qedr_alloc_ucontext(struct ib_ucontext *uctx, struct ib_udata *udata) if (!udata) return -EFAULT; + if (udata->inlen) { + rc = ib_copy_from_udata(&ureq, udata, + min(sizeof(ureq), udata->inlen)); + if (rc) { + DP_ERR(dev, "Problem copying data from user space\n"); + return -EFAULT; + } + + ctx->db_rec = !!(ureq.context_flags & QEDR_ALLOC_UCTX_DB_REC); + } + rc = dev->ops->rdma_add_user(dev->rdma_ctx, &oparams); if (rc) { DP_ERR(dev, @@ -352,7 +365,9 @@ void qedr_mmap_free(struct rdma_user_mmap_entry *rdma_entry) struct qedr_user_mmap_entry *entry = get_qedr_mmap_entry(rdma_entry); struct qedr_dev *dev = entry->dev; - if (entry->mmap_flag == QEDR_USER_MMAP_IO_WC) + if (entry->mmap_flag == QEDR_USER_MMAP_PHYS_PAGE) + free_page((unsigned long)entry->address); + else if (entry->mmap_flag == QEDR_USER_MMAP_IO_WC) dev->ops->rdma_remove_user(dev->rdma_ctx, entry->dpi); kfree(entry); @@ -389,6 +404,10 @@ int qedr_mmap(struct ib_ucontext *ucontext, struct vm_area_struct *vma) pgprot_writecombine(vma->vm_page_prot), rdma_entry); break; + case QEDR_USER_MMAP_PHYS_PAGE: + rc = vm_insert_page(vma, vma->vm_start, + virt_to_page(entry->address)); + break; default: rc = -EINVAL; } @@ -629,16 +648,48 @@ static void qedr_populate_pbls(struct qedr_dev *dev, struct ib_umem *umem, } } +static int qedr_db_recovery_add(struct qedr_dev *dev, + void __iomem *db_addr, + void *db_data, + enum qed_db_rec_width db_width, + enum qed_db_rec_space db_space) +{ + if (!db_data) { + DP_DEBUG(dev, QEDR_MSG_INIT, "avoiding db rec since old lib\n"); + return 0; + } + + return dev->ops->common->db_recovery_add(dev->cdev, db_addr, db_data, + db_width, db_space); +} + +static void qedr_db_recovery_del(struct qedr_dev *dev, + void __iomem *db_addr, + void *db_data) +{ + if (!db_data) { + DP_DEBUG(dev, QEDR_MSG_INIT, "avoiding db rec since old lib\n"); + return; + } + + /* Ignore return code as there is not much we can do about it. Error + * log will be printed inside. + */ + dev->ops->common->db_recovery_del(dev->cdev, db_addr, db_data); +} + static int qedr_copy_cq_uresp(struct qedr_dev *dev, - struct qedr_cq *cq, struct ib_udata *udata) + struct qedr_cq *cq, struct ib_udata *udata, + u32 db_offset) { struct qedr_create_cq_uresp uresp; int rc; memset(&uresp, 0, sizeof(uresp)); - uresp.db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT); + uresp.db_offset = db_offset; uresp.icid = cq->icid; + uresp.db_rec_addr = rdma_user_mmap_get_offset(cq->q.db_mmap_entry); rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp)); if (rc) @@ -666,10 +717,58 @@ static inline int qedr_align_cq_entries(int entries) return aligned_size / QEDR_CQE_SIZE; } +static int qedr_init_user_db_rec(struct ib_udata *udata, + struct qedr_dev *dev, struct qedr_userq *q, + bool requires_db_rec) +{ + struct qedr_ucontext *uctx = + rdma_udata_to_drv_context(udata, struct qedr_ucontext, + ibucontext); + struct qedr_user_mmap_entry *entry; + int rc; + + /* Aborting for non doorbell userqueue (SRQ) or non-supporting lib */ + if (requires_db_rec == 0 || !uctx->db_rec) + return 0; + + /* Allocate a page for doorbell recovery, add to mmap */ + q->db_rec_data = (void *)get_zeroed_page(GFP_USER); + if (!q->db_rec_data) { + DP_ERR(dev, "get_zeroed_page failed\n"); + return -ENOMEM; + } + + entry = kzalloc(sizeof(*entry), GFP_KERNEL); + if (!entry) + goto err_free_db_data; + + entry->address = q->db_rec_data; + entry->length = PAGE_SIZE; + entry->mmap_flag = QEDR_USER_MMAP_PHYS_PAGE; + rc = rdma_user_mmap_entry_insert(&uctx->ibucontext, + &entry->rdma_entry, + PAGE_SIZE); + if (rc) + goto err_free_entry; + + q->db_mmap_entry = &entry->rdma_entry; + + return 0; + +err_free_entry: + kfree(entry); + +err_free_db_data: + free_page((unsigned long)q->db_rec_data); + q->db_rec_data = NULL; + return -ENOMEM; +} + static inline int qedr_init_user_queue(struct ib_udata *udata, struct qedr_dev *dev, struct qedr_userq *q, u64 buf_addr, - size_t buf_len, int access, int dmasync, + size_t buf_len, bool requires_db_rec, + int access, int dmasync, int alloc_and_init) { u32 fw_pages; @@ -707,7 +806,8 @@ static inline int qedr_init_user_queue(struct ib_udata *udata, } } - return 0; + /* mmap the user address used to store doorbell data for recovery */ + return qedr_init_user_db_rec(udata, dev, q, requires_db_rec); err0: ib_umem_release(q->umem); @@ -793,6 +893,7 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, int entries = attr->cqe; struct qedr_cq *cq = get_qedr_cq(ibcq); int chain_entries; + u32 db_offset; int page_cnt; u64 pbl_ptr; u16 icid; @@ -812,8 +913,12 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, chain_entries = qedr_align_cq_entries(entries); chain_entries = min_t(int, chain_entries, QEDR_MAX_CQES); + /* calc db offset. user will add DPI base, kernel will add db addr */ + db_offset = DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT); + if (udata) { - if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) { + if (ib_copy_from_udata(&ureq, udata, min(sizeof(ureq), + udata->inlen))) { DP_ERR(dev, "create cq: problem copying data from user space\n"); goto err0; @@ -828,8 +933,9 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, cq->cq_type = QEDR_CQ_TYPE_USER; rc = qedr_init_user_queue(udata, dev, &cq->q, ureq.addr, - ureq.len, IB_ACCESS_LOCAL_WRITE, 1, - 1); + ureq.len, true, + IB_ACCESS_LOCAL_WRITE, + 1, 1); if (rc) goto err0; @@ -837,6 +943,7 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, page_cnt = cq->q.pbl_info.num_pbes; cq->ibcq.cqe = chain_entries; + cq->q.db_addr = ctx->dpi_addr + db_offset; } else { cq->cq_type = QEDR_CQ_TYPE_KERNEL; @@ -848,7 +955,7 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, sizeof(union rdma_cqe), &cq->pbl, NULL); if (rc) - goto err1; + goto err0; page_cnt = qed_chain_get_page_cnt(&cq->pbl); pbl_ptr = qed_chain_get_pbl_phys(&cq->pbl); @@ -860,21 +967,28 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, rc = dev->ops->rdma_create_cq(dev->rdma_ctx, ¶ms, &icid); if (rc) - goto err2; + goto err1; cq->icid = icid; cq->sig = QEDR_CQ_MAGIC_NUMBER; spin_lock_init(&cq->cq_lock); if (udata) { - rc = qedr_copy_cq_uresp(dev, cq, udata); + rc = qedr_copy_cq_uresp(dev, cq, udata, db_offset); if (rc) - goto err3; + goto err2; + + rc = qedr_db_recovery_add(dev, cq->q.db_addr, + &cq->q.db_rec_data->db_data, + DB_REC_WIDTH_64B, + DB_REC_USER); + if (rc) + goto err2; + } else { /* Generate doorbell address. */ - cq->db_addr = dev->db_addr + - DB_ADDR_SHIFT(DQ_PWM_OFFSET_UCM_RDMA_CQ_CONS_32BIT); cq->db.data.icid = cq->icid; + cq->db_addr = dev->db_addr + db_offset; cq->db.data.params = DB_AGG_CMD_SET << RDMA_PWM_VAL32_DATA_AGG_CMD_SHIFT; @@ -884,6 +998,11 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, cq->latest_cqe = NULL; consume_cqe(cq); cq->cq_cons = qed_chain_get_cons_idx_u32(&cq->pbl); + + rc = qedr_db_recovery_add(dev, cq->db_addr, &cq->db.data, + DB_REC_WIDTH_64B, DB_REC_KERNEL); + if (rc) + goto err2; } DP_DEBUG(dev, QEDR_MSG_CQ, @@ -892,18 +1011,19 @@ int qedr_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, return 0; -err3: +err2: destroy_iparams.icid = cq->icid; dev->ops->rdma_destroy_cq(dev->rdma_ctx, &destroy_iparams, &destroy_oparams); -err2: - if (udata) - qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl); - else - dev->ops->common->chain_free(dev->cdev, &cq->pbl); err1: - if (udata) + if (udata) { + qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl); ib_umem_release(cq->q.umem); + if (ctx) + rdma_user_mmap_entry_remove(cq->q.db_mmap_entry); + } else { + dev->ops->common->chain_free(dev->cdev, &cq->pbl); + } err0: return -EINVAL; } @@ -934,8 +1054,10 @@ void qedr_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) cq->destroyed = 1; /* GSIs CQs are handled by driver, so they don't exist in the FW */ - if (cq->cq_type == QEDR_CQ_TYPE_GSI) + if (cq->cq_type == QEDR_CQ_TYPE_GSI) { + qedr_db_recovery_del(dev, cq->db_addr, &cq->db.data); return; + } iparams.icid = cq->icid; dev->ops->rdma_destroy_cq(dev->rdma_ctx, &iparams, &oparams); @@ -944,6 +1066,14 @@ void qedr_destroy_cq(struct ib_cq *ibcq, struct ib_udata *udata) if (udata) { qedr_free_pbl(dev, &cq->q.pbl_info, cq->q.pbl_tbl); ib_umem_release(cq->q.umem); + + if (cq->q.db_rec_data) { + qedr_db_recovery_del(dev, cq->q.db_addr, + &cq->q.db_rec_data->db_data); + rdma_user_mmap_entry_remove(cq->q.db_mmap_entry); + } + } else { + qedr_db_recovery_del(dev, cq->db_addr, &cq->db.data); } /* We don't want the IRQ handler to handle a non-existing CQ so we @@ -1108,8 +1238,8 @@ static int qedr_copy_srq_uresp(struct qedr_dev *dev, } static void qedr_copy_rq_uresp(struct qedr_dev *dev, - struct qedr_create_qp_uresp *uresp, - struct qedr_qp *qp) + struct qedr_create_qp_uresp *uresp, + struct qedr_qp *qp) { /* iWARP requires two doorbells per RQ. */ if (rdma_protocol_iwarp(&dev->ibdev, 1)) { @@ -1122,6 +1252,7 @@ static void qedr_copy_rq_uresp(struct qedr_dev *dev, } uresp->rq_icid = qp->icid; + uresp->rq_db_rec_addr = rdma_user_mmap_get_offset(qp->urq.db_mmap_entry); } static void qedr_copy_sq_uresp(struct qedr_dev *dev, @@ -1135,22 +1266,25 @@ static void qedr_copy_sq_uresp(struct qedr_dev *dev, uresp->sq_icid = qp->icid; else uresp->sq_icid = qp->icid + 1; + + uresp->sq_db_rec_addr = + rdma_user_mmap_get_offset(qp->usq.db_mmap_entry); } static int qedr_copy_qp_uresp(struct qedr_dev *dev, - struct qedr_qp *qp, struct ib_udata *udata) + struct qedr_qp *qp, struct ib_udata *udata, + struct qedr_create_qp_uresp *uresp) { - struct qedr_create_qp_uresp uresp; int rc; - memset(&uresp, 0, sizeof(uresp)); - qedr_copy_sq_uresp(dev, &uresp, qp); - qedr_copy_rq_uresp(dev, &uresp, qp); + memset(uresp, 0, sizeof(*uresp)); + qedr_copy_sq_uresp(dev, uresp, qp); + qedr_copy_rq_uresp(dev, uresp, qp); - uresp.atomic_supported = dev->atomic_cap != IB_ATOMIC_NONE; - uresp.qp_id = qp->qp_id; + uresp->atomic_supported = dev->atomic_cap != IB_ATOMIC_NONE; + uresp->qp_id = qp->qp_id; - rc = qedr_ib_copy_to_udata(udata, &uresp, sizeof(uresp)); + rc = qedr_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", @@ -1197,16 +1331,35 @@ static void qedr_set_common_qp_params(struct qedr_dev *dev, qp->sq.max_sges, qp->sq_cq->icid); } -static void qedr_set_roce_db_info(struct qedr_dev *dev, struct qedr_qp *qp) +static int qedr_set_roce_db_info(struct qedr_dev *dev, struct qedr_qp *qp) { + int rc; + 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; + rc = qedr_db_recovery_add(dev, qp->sq.db, + &qp->sq.db_data, + DB_REC_WIDTH_32B, + DB_REC_KERNEL); + if (rc) + return rc; + if (!qp->srq) { qp->rq.db = dev->db_addr + DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_ROCE_RQ_PROD); qp->rq.db_data.data.icid = qp->icid; + + rc = qedr_db_recovery_add(dev, qp->rq.db, + &qp->rq.db_data, + DB_REC_WIDTH_32B, + DB_REC_KERNEL); + if (rc) + qedr_db_recovery_del(dev, qp->sq.db, + &qp->sq.db_data); } + + return rc; } static int qedr_check_srq_params(struct qedr_dev *dev, @@ -1260,7 +1413,7 @@ static int qedr_init_srq_user_params(struct ib_udata *udata, int rc; rc = qedr_init_user_queue(udata, srq->dev, &srq->usrq, ureq->srq_addr, - ureq->srq_len, access, dmasync, 1); + ureq->srq_len, false, access, dmasync, 1); if (rc) return rc; @@ -1356,7 +1509,8 @@ int qedr_create_srq(struct ib_srq *ibsrq, struct ib_srq_init_attr *init_attr, hw_srq->max_sges = init_attr->attr.max_sge; if (udata) { - if (ib_copy_from_udata(&ureq, udata, sizeof(ureq))) { + if (ib_copy_from_udata(&ureq, udata, min(sizeof(ureq), + udata->inlen))) { DP_ERR(dev, "create srq: problem copying data from user space\n"); goto err0; @@ -1545,7 +1699,9 @@ qedr_iwarp_populate_user_qp(struct qedr_dev *dev, &qp->urq.pbl_info, FW_PAGE_SHIFT); } -static void qedr_cleanup_user(struct qedr_dev *dev, struct qedr_qp *qp) +static void qedr_cleanup_user(struct qedr_dev *dev, + struct qedr_ucontext *ctx, + struct qedr_qp *qp) { ib_umem_release(qp->usq.umem); qp->usq.umem = NULL; @@ -1560,6 +1716,18 @@ static void qedr_cleanup_user(struct qedr_dev *dev, struct qedr_qp *qp) kfree(qp->usq.pbl_tbl); kfree(qp->urq.pbl_tbl); } + + if (qp->usq.db_rec_data) { + qedr_db_recovery_del(dev, qp->usq.db_addr, + &qp->usq.db_rec_data->db_data); + rdma_user_mmap_entry_remove(qp->usq.db_mmap_entry); + } + + if (qp->urq.db_rec_data) { + qedr_db_recovery_del(dev, qp->urq.db_addr, + &qp->urq.db_rec_data->db_data); + rdma_user_mmap_entry_remove(qp->urq.db_mmap_entry); + } } static int qedr_create_user_qp(struct qedr_dev *dev, @@ -1571,13 +1739,15 @@ static int qedr_create_user_qp(struct qedr_dev *dev, struct qed_rdma_create_qp_in_params in_params; struct qed_rdma_create_qp_out_params out_params; struct qedr_pd *pd = get_qedr_pd(ibpd); + struct qedr_create_qp_uresp uresp; + struct qedr_ucontext *ctx = NULL; struct qedr_create_qp_ureq ureq; int alloc_and_init = rdma_protocol_roce(&dev->ibdev, 1); int rc = -EINVAL; qp->create_type = QEDR_QP_CREATE_USER; memset(&ureq, 0, sizeof(ureq)); - rc = ib_copy_from_udata(&ureq, udata, sizeof(ureq)); + rc = ib_copy_from_udata(&ureq, udata, min(sizeof(ureq), udata->inlen)); if (rc) { DP_ERR(dev, "Problem copying data from user space\n"); return rc; @@ -1585,14 +1755,16 @@ static int qedr_create_user_qp(struct qedr_dev *dev, /* SQ - read access only (0), dma sync not required (0) */ rc = qedr_init_user_queue(udata, dev, &qp->usq, ureq.sq_addr, - ureq.sq_len, 0, 0, alloc_and_init); + ureq.sq_len, true, 0, 0, + alloc_and_init); if (rc) return rc; if (!qp->srq) { /* RQ - read access only (0), dma sync not required (0) */ rc = qedr_init_user_queue(udata, dev, &qp->urq, ureq.rq_addr, - ureq.rq_len, 0, 0, alloc_and_init); + ureq.rq_len, true, + 0, 0, alloc_and_init); if (rc) return rc; } @@ -1622,29 +1794,57 @@ static int qedr_create_user_qp(struct qedr_dev *dev, qp->qp_id = out_params.qp_id; qp->icid = out_params.icid; - rc = qedr_copy_qp_uresp(dev, qp, udata); + rc = qedr_copy_qp_uresp(dev, qp, udata, &uresp); + if (rc) + goto err; + + /* db offset was calculated in copy_qp_uresp, now set in the user q */ + ctx = pd->uctx; + qp->usq.db_addr = ctx->dpi_addr + uresp.sq_db_offset; + qp->urq.db_addr = ctx->dpi_addr + uresp.rq_db_offset; + + rc = qedr_db_recovery_add(dev, qp->usq.db_addr, + &qp->usq.db_rec_data->db_data, + DB_REC_WIDTH_32B, + DB_REC_USER); + if (rc) + goto err; + + rc = qedr_db_recovery_add(dev, qp->urq.db_addr, + &qp->urq.db_rec_data->db_data, + DB_REC_WIDTH_32B, + DB_REC_USER); if (rc) goto err; qedr_qp_user_print(dev, qp); - return 0; + return rc; err: 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: - qedr_cleanup_user(dev, qp); + qedr_cleanup_user(dev, ctx, qp); return rc; } -static void qedr_set_iwarp_db_info(struct qedr_dev *dev, struct qedr_qp *qp) +static int qedr_set_iwarp_db_info(struct qedr_dev *dev, struct qedr_qp *qp) { + int rc; + qp->sq.db = dev->db_addr + DB_ADDR_SHIFT(DQ_PWM_OFFSET_XCM_RDMA_SQ_PROD); qp->sq.db_data.data.icid = qp->icid; + rc = qedr_db_recovery_add(dev, qp->sq.db, + &qp->sq.db_data, + DB_REC_WIDTH_32B, + DB_REC_KERNEL); + if (rc) + return rc; + qp->rq.db = dev->db_addr + DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_IWARP_RQ_PROD); qp->rq.db_data.data.icid = qp->icid; @@ -1652,6 +1852,12 @@ static void qedr_set_iwarp_db_info(struct qedr_dev *dev, struct qedr_qp *qp) DB_ADDR_SHIFT(DQ_PWM_OFFSET_TCM_FLAGS); qp->rq.iwarp_db2_data.data.icid = qp->icid; qp->rq.iwarp_db2_data.data.value = DQ_TCM_IWARP_POST_RQ_CF_CMD; + + rc = qedr_db_recovery_add(dev, qp->rq.db, + &qp->rq.db_data, + DB_REC_WIDTH_32B, + DB_REC_KERNEL); + return rc; } static int @@ -1699,8 +1905,7 @@ qedr_roce_create_kernel_qp(struct qedr_dev *dev, qp->qp_id = out_params.qp_id; qp->icid = out_params.icid; - qedr_set_roce_db_info(dev, qp); - return rc; + return qedr_set_roce_db_info(dev, qp); } static int @@ -1758,8 +1963,7 @@ qedr_iwarp_create_kernel_qp(struct qedr_dev *dev, qp->qp_id = out_params.qp_id; qp->icid = out_params.icid; - qedr_set_iwarp_db_info(dev, qp); - return rc; + return qedr_set_iwarp_db_info(dev, qp); err: dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp); @@ -1774,6 +1978,15 @@ static void qedr_cleanup_kernel(struct qedr_dev *dev, struct qedr_qp *qp) dev->ops->common->chain_free(dev->cdev, &qp->rq.pbl); kfree(qp->rqe_wr_id); + + /* GSI qp is not registered to db mechanism so no need to delete */ + if (qp->qp_type == IB_QPT_GSI) + return; + + qedr_db_recovery_del(dev, qp->sq.db, &qp->sq.db_data); + + if (!qp->srq) + qedr_db_recovery_del(dev, qp->rq.db, &qp->rq.db_data); } static int qedr_create_kernel_qp(struct qedr_dev *dev, @@ -2414,7 +2627,10 @@ err: static int qedr_free_qp_resources(struct qedr_dev *dev, struct qedr_qp *qp, struct ib_udata *udata) { - int rc = 0; + struct qedr_ucontext *ctx = + rdma_udata_to_drv_context(udata, struct qedr_ucontext, + ibucontext); + int rc; if (qp->qp_type != IB_QPT_GSI) { rc = dev->ops->rdma_destroy_qp(dev->rdma_ctx, qp->qed_qp); @@ -2423,7 +2639,7 @@ static int qedr_free_qp_resources(struct qedr_dev *dev, struct qedr_qp *qp, } if (qp->create_type == QEDR_QP_CREATE_USER) - qedr_cleanup_user(dev, qp); + qedr_cleanup_user(dev, ctx, qp); else qedr_cleanup_kernel(dev, qp); diff --git a/include/uapi/rdma/qedr-abi.h b/include/uapi/rdma/qedr-abi.h index 7a10b3a325fa..c022ee26089b 100644 --- a/include/uapi/rdma/qedr-abi.h +++ b/include/uapi/rdma/qedr-abi.h @@ -38,6 +38,15 @@ #define QEDR_ABI_VERSION (8) /* user kernel communication data structures. */ +enum qedr_alloc_ucontext_flags { + QEDR_ALLOC_UCTX_RESERVED = 1 << 0, + QEDR_ALLOC_UCTX_DB_REC = 1 << 1 +}; + +struct qedr_alloc_ucontext_req { + __u32 context_flags; + __u32 reserved; +}; struct qedr_alloc_ucontext_resp { __aligned_u64 db_pa; @@ -74,6 +83,7 @@ struct qedr_create_cq_uresp { __u32 db_offset; __u16 icid; __u16 reserved; + __aligned_u64 db_rec_addr; }; struct qedr_create_qp_ureq { @@ -109,6 +119,13 @@ struct qedr_create_qp_uresp { __u32 rq_db2_offset; __u32 reserved; + + /* address of SQ doorbell recovery user entry */ + __aligned_u64 sq_db_rec_addr; + + /* address of RQ doorbell recovery user entry */ + __aligned_u64 rq_db_rec_addr; + }; struct qedr_create_srq_ureq { @@ -128,4 +145,12 @@ struct qedr_create_srq_uresp { __u32 reserved1; }; +/* doorbell recovery entry allocated and populated by userspace doorbelling + * entities and mapped to kernel. Kernel uses this to register doorbell + * information with doorbell drop recovery mechanism. + */ +struct qedr_user_db_rec { + __aligned_u64 db_data; /* doorbell data */ +}; + #endif /* __QEDR_USER_H__ */ -- 2.34.1