From 74217d4c6a4fb0d80a7e2f217584ccdc692d5f57 Mon Sep 17 00:00:00 2001 From: Hariprasad S Date: Tue, 9 Jun 2015 18:23:12 +0530 Subject: iw_cxgb4: support for bar2 qid densities exceeding the page size Handle this configuration: Queues Per Page * SGE BAR2 Queue Register Area Size > Page Size Use cxgb4_bar2_sge_qregs() to obtain the proper location within the bar2 region for a given qid. Rework the DB and GTS write functions to make use of this bar2 info. Signed-off-by: Steve Wise Signed-off-by: Hariprasad Shenai Signed-off-by: Doug Ledford --- drivers/infiniband/hw/cxgb4/cq.c | 22 ++++++++++------------ 1 file changed, 10 insertions(+), 12 deletions(-) (limited to 'drivers/infiniband/hw/cxgb4/cq.c') diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c index 68ddb37..b5596fa 100644 --- a/drivers/infiniband/hw/cxgb4/cq.c +++ b/drivers/infiniband/hw/cxgb4/cq.c @@ -156,19 +156,17 @@ static int create_cq(struct c4iw_rdev *rdev, struct t4_cq *cq, goto err4; cq->gen = 1; + cq->gts = rdev->lldi.gts_reg; cq->rdev = rdev; - if (user) { - u32 off = (cq->cqid << rdev->cqshift) & PAGE_MASK; - cq->ugts = (u64)rdev->bar2_pa + off; - } else if (is_t4(rdev->lldi.adapter_type)) { - cq->gts = rdev->lldi.gts_reg; - cq->qid_mask = -1U; - } else { - u32 off = ((cq->cqid << rdev->cqshift) & PAGE_MASK) + 12; - - cq->gts = rdev->bar2_kva + off; - cq->qid_mask = rdev->qpmask; + cq->bar2_va = c4iw_bar2_addrs(rdev, cq->cqid, T4_BAR2_QTYPE_INGRESS, + &cq->bar2_qid, + user ? &cq->bar2_pa : NULL); + if (user && !cq->bar2_va) { + pr_warn(MOD "%s: cqid %u not in BAR2 range.\n", + pci_name(rdev->lldi.pdev), cq->cqid); + ret = -EINVAL; + goto err4; } return 0; err4: @@ -971,7 +969,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries, insert_mmap(ucontext, mm); mm2->key = uresp.gts_key; - mm2->addr = chp->cq.ugts; + mm2->addr = chp->cq.bar2_pa; mm2->len = PAGE_SIZE; insert_mmap(ucontext, mm2); } -- cgit v1.1