diff options
| author | Ingo Molnar <mingo@elte.hu> | 2010-07-21 21:45:02 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-07-21 21:45:08 +0200 |
| commit | dca45ad8af54963c005393a484ad117b8ba6150f (patch) | |
| tree | 7c9a6966283a6bb12b54e5680a67d203be292930 /drivers/infiniband/hw/cxgb4/cq.c | |
| parent | 68c38fc3cb4e5a60f502ee9c45f3dfe70e5165ad (diff) | |
| parent | cd5b8f8755a89a57fc8c408d284b8b613f090345 (diff) | |
Merge branch 'linus' into sched/core
Merge reason: Move from the -rc3 to the almost-rc6 base.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/cq.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/cq.c | 31 |
1 files changed, 23 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c index 2447f5295482..fac5c6e68011 100644 --- a/drivers/infiniband/hw/cxgb4/cq.c +++ b/drivers/infiniband/hw/cxgb4/cq.c @@ -77,7 +77,7 @@ static int destroy_cq(struct c4iw_rdev *rdev, struct t4_cq *cq, kfree(cq->sw_queue); dma_free_coherent(&(rdev->lldi.pdev->dev), cq->memsize, cq->queue, - pci_unmap_addr(cq, mapping)); + dma_unmap_addr(cq, mapping)); c4iw_put_cqid(rdev, cq->cqid, uctx); return ret; } @@ -112,7 +112,7 @@ static int create_cq(struct c4iw_rdev *rdev, struct t4_cq *cq, ret = -ENOMEM; goto err3; } - pci_unmap_addr_set(cq, mapping, cq->dma_addr); + dma_unmap_addr_set(cq, mapping, cq->dma_addr); memset(cq->queue, 0, cq->memsize); /* build fw_ri_res_wr */ @@ -179,7 +179,7 @@ static int create_cq(struct c4iw_rdev *rdev, struct t4_cq *cq, return 0; err4: dma_free_coherent(&rdev->lldi.pdev->dev, cq->memsize, cq->queue, - pci_unmap_addr(cq, mapping)); + dma_unmap_addr(cq, mapping)); err3: kfree(cq->sw_queue); err2: @@ -764,7 +764,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries, struct c4iw_create_cq_resp uresp; struct c4iw_ucontext *ucontext = NULL; int ret; - size_t memsize; + size_t memsize, hwentries; struct c4iw_mm_entry *mm, *mm2; PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries); @@ -788,14 +788,29 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries, * entries must be multiple of 16 for HW. */ entries = roundup(entries, 16); - memsize = entries * sizeof *chp->cq.queue; + + /* + * Make actual HW queue 2x to avoid cdix_inc overflows. + */ + hwentries = entries * 2; + + /* + * Make HW queue at least 64 entries so GTS updates aren't too + * frequent. + */ + if (hwentries < 64) + hwentries = 64; + + memsize = hwentries * sizeof *chp->cq.queue; /* * memsize must be a multiple of the page size if its a user cq. */ - if (ucontext) + if (ucontext) { memsize = roundup(memsize, PAGE_SIZE); - chp->cq.size = entries; + hwentries = memsize / sizeof *chp->cq.queue; + } + chp->cq.size = hwentries; chp->cq.memsize = memsize; ret = create_cq(&rhp->rdev, &chp->cq, @@ -805,7 +820,7 @@ struct ib_cq *c4iw_create_cq(struct ib_device *ibdev, int entries, chp->rhp = rhp; chp->cq.size--; /* status page */ - chp->ibcq.cqe = chp->cq.size - 1; + chp->ibcq.cqe = entries - 2; spin_lock_init(&chp->lock); atomic_set(&chp->refcnt, 1); init_waitqueue_head(&chp->wait); |