diff options
| author | Hariprasad S <hariprasad@chelsio.com> | 2015-06-09 15:53:12 +0300 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2015-06-11 19:22:32 +0300 |
| commit | 74217d4c6a4fb0d80a7e2f217584ccdc692d5f57 (patch) | |
| tree | f87f4635c81e69f824723c0fe9e5d064a645030b /drivers/infiniband/hw/cxgb4/device.c | |
| parent | 66cf188eba524e19f1d2bd654a9d656d7432db80 (diff) | |
| download | linux-74217d4c6a4fb0d80a7e2f217584ccdc692d5f57.tar.xz | |
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 <swise@opengridcomputing.com>
Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw/cxgb4/device.c')
| -rw-r--r-- | drivers/infiniband/hw/cxgb4/device.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c index 7e895d714b19..1a297391b54c 100644 --- a/drivers/infiniband/hw/cxgb4/device.c +++ b/drivers/infiniband/hw/cxgb4/device.c @@ -795,13 +795,7 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev) goto err1; } - /* - * qpshift is the number of bits to shift the qpid left in order - * to get the correct address of the doorbell for that qp. - */ - rdev->qpshift = PAGE_SHIFT - ilog2(rdev->lldi.udb_density); rdev->qpmask = rdev->lldi.udb_density - 1; - rdev->cqshift = PAGE_SHIFT - ilog2(rdev->lldi.ucq_density); rdev->cqmask = rdev->lldi.ucq_density - 1; PDBG("%s dev %s stag start 0x%0x size 0x%0x num stags %d " "pbl start 0x%0x size 0x%0x rq start 0x%0x size 0x%0x " @@ -815,14 +809,12 @@ static int c4iw_rdev_open(struct c4iw_rdev *rdev) rdev->lldi.vr->qp.size, rdev->lldi.vr->cq.start, rdev->lldi.vr->cq.size); - PDBG("udb len 0x%x udb base %p db_reg %p gts_reg %p qpshift %lu " - "qpmask 0x%x cqshift %lu cqmask 0x%x\n", + PDBG("udb len 0x%x udb base %p db_reg %p gts_reg %p " + "qpmask 0x%x cqmask 0x%x\n", (unsigned)pci_resource_len(rdev->lldi.pdev, 2), (void *)pci_resource_start(rdev->lldi.pdev, 2), - rdev->lldi.db_reg, - rdev->lldi.gts_reg, - rdev->qpshift, rdev->qpmask, - rdev->cqshift, rdev->cqmask); + rdev->lldi.db_reg, rdev->lldi.gts_reg, + rdev->qpmask, rdev->cqmask); if (c4iw_num_stags(rdev) == 0) { err = -EINVAL; |