diff options
Diffstat (limited to 'drivers/infiniband/hw/bnxt_re/ib_verbs.c')
-rw-r--r-- | drivers/infiniband/hw/bnxt_re/ib_verbs.c | 61 |
1 files changed, 54 insertions, 7 deletions
diff --git a/drivers/infiniband/hw/bnxt_re/ib_verbs.c b/drivers/infiniband/hw/bnxt_re/ib_verbs.c index 758ea02e1d13..7213dc7574d0 100644 --- a/drivers/infiniband/hw/bnxt_re/ib_verbs.c +++ b/drivers/infiniband/hw/bnxt_re/ib_verbs.c @@ -50,6 +50,7 @@ #include <rdma/ib_mad.h> #include <rdma/ib_cache.h> #include <rdma/uverbs_ioctl.h> +#include <linux/hashtable.h> #include "bnxt_ulp.h" @@ -2910,14 +2911,20 @@ int bnxt_re_post_recv(struct ib_qp *ib_qp, const struct ib_recv_wr *wr, /* Completion Queues */ int bnxt_re_destroy_cq(struct ib_cq *ib_cq, struct ib_udata *udata) { - struct bnxt_re_cq *cq; + struct bnxt_qplib_chip_ctx *cctx; struct bnxt_qplib_nq *nq; struct bnxt_re_dev *rdev; + struct bnxt_re_cq *cq; cq = container_of(ib_cq, struct bnxt_re_cq, ib_cq); rdev = cq->rdev; nq = cq->qplib_cq.nq; + cctx = rdev->chip_ctx; + if (cctx->modes.toggle_bits & BNXT_QPLIB_CQ_TOGGLE_BIT) { + free_page((unsigned long)cq->uctx_cq_page); + hash_del(&cq->hash_entry); + } bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq); ib_umem_release(cq->umem); @@ -2935,10 +2942,11 @@ int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, struct bnxt_re_ucontext *uctx = rdma_udata_to_drv_context(udata, struct bnxt_re_ucontext, ib_uctx); struct bnxt_qplib_dev_attr *dev_attr = &rdev->dev_attr; - int rc, entries; - int cqe = attr->cqe; + struct bnxt_qplib_chip_ctx *cctx; struct bnxt_qplib_nq *nq = NULL; + int rc = -ENOMEM, entries; unsigned int nq_alloc_cnt; + int cqe = attr->cqe; u32 active_cqs; if (attr->flags) @@ -2951,6 +2959,7 @@ int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, } cq->rdev = rdev; + cctx = rdev->chip_ctx; cq->qplib_cq.cq_handle = (u64)(unsigned long)(&cq->qplib_cq); entries = bnxt_re_init_depth(cqe + 1, uctx); @@ -3012,22 +3021,32 @@ int bnxt_re_create_cq(struct ib_cq *ibcq, const struct ib_cq_init_attr *attr, spin_lock_init(&cq->cq_lock); if (udata) { - struct bnxt_re_cq_resp resp; - + struct bnxt_re_cq_resp resp = {}; + + if (cctx->modes.toggle_bits & BNXT_QPLIB_CQ_TOGGLE_BIT) { + hash_add(rdev->cq_hash, &cq->hash_entry, cq->qplib_cq.id); + /* Allocate a page */ + cq->uctx_cq_page = (void *)get_zeroed_page(GFP_KERNEL); + if (!cq->uctx_cq_page) + goto c2fail; + resp.comp_mask |= BNXT_RE_CQ_TOGGLE_PAGE_SUPPORT; + } resp.cqid = cq->qplib_cq.id; resp.tail = cq->qplib_cq.hwq.cons; resp.phase = cq->qplib_cq.period; resp.rsvd = 0; - rc = ib_copy_to_udata(udata, &resp, sizeof(resp)); + rc = ib_copy_to_udata(udata, &resp, min(sizeof(resp), udata->outlen)); if (rc) { ibdev_err(&rdev->ibdev, "Failed to copy CQ udata"); bnxt_qplib_destroy_cq(&rdev->qplib_res, &cq->qplib_cq); - goto c2fail; + goto free_mem; } } return 0; +free_mem: + free_page((unsigned long)cq->uctx_cq_page); c2fail: ib_umem_release(cq->umem); fail: @@ -4214,6 +4233,19 @@ void bnxt_re_dealloc_ucontext(struct ib_ucontext *ib_uctx) } } +static struct bnxt_re_cq *bnxt_re_search_for_cq(struct bnxt_re_dev *rdev, u32 cq_id) +{ + struct bnxt_re_cq *cq = NULL, *tmp_cq; + + hash_for_each_possible(rdev->cq_hash, tmp_cq, hash_entry, cq_id) { + if (tmp_cq->qplib_cq.id == cq_id) { + cq = tmp_cq; + break; + } + } + return cq; +} + /* Helper function to mmap the virtual memory from user app */ int bnxt_re_mmap(struct ib_ucontext *ib_uctx, struct vm_area_struct *vma) { @@ -4442,10 +4474,12 @@ static int UVERBS_HANDLER(BNXT_RE_METHOD_GET_TOGGLE_MEM)(struct uverbs_attr_bund struct bnxt_re_ucontext *uctx; struct ib_ucontext *ib_uctx; struct bnxt_re_dev *rdev; + struct bnxt_re_cq *cq; u64 mem_offset; u64 addr = 0; u32 length; u32 offset; + u32 cq_id; int err; ib_uctx = ib_uverbs_get_ucontext(attrs); @@ -4461,6 +4495,19 @@ static int UVERBS_HANDLER(BNXT_RE_METHOD_GET_TOGGLE_MEM)(struct uverbs_attr_bund switch (res_type) { case BNXT_RE_CQ_TOGGLE_MEM: + err = uverbs_copy_from(&cq_id, attrs, BNXT_RE_TOGGLE_MEM_RES_ID); + if (err) + return err; + + cq = bnxt_re_search_for_cq(rdev, cq_id); + if (!cq) + return -EINVAL; + + length = PAGE_SIZE; + addr = (u64)cq->uctx_cq_page; + mmap_flag = BNXT_RE_MMAP_TOGGLE_PAGE; + offset = 0; + break; case BNXT_RE_SRQ_TOGGLE_MEM: break; |