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path: root/drivers/infiniband/hw/cxgb4/cq.c
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Diffstat (limited to 'drivers/infiniband/hw/cxgb4/cq.c')
-rw-r--r--drivers/infiniband/hw/cxgb4/cq.c31
1 files changed, 23 insertions, 8 deletions
diff --git a/drivers/infiniband/hw/cxgb4/cq.c b/drivers/infiniband/hw/cxgb4/cq.c
index 2447f529548..fac5c6e6801 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);