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| author |   Devesh Sharma <devesh.sharma@emulex.com> | 2014-09-05 19:35:40 +0530 |
|---|---|---|
| committer |   Roland Dreier <roland@purestorage.com> | 2014-10-10 09:43:01 -0700 |
| commit | 1b76d38332271d5a0468ae5e465c5ea534c473c6 (patch) | |
| tree | ac7fb58ebad72710e11a385a1d0d5f3c2e54994e /drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | |
| parent | RDMA/ocrdma: Get vlan tag from ib_qp_attrs (diff) | |
| download | linux-dev-1b76d38332271d5a0468ae5e465c5ea534c473c6.tar.xz linux-dev-1b76d38332271d5a0468ae5e465c5ea534c473c6.zip | |
RDMA/ocrdma: Convert kernel VA to PA for mmap in user
In some platforms, when iommu is enabled, the bus address returned by
dma_alloc_coherent is different than the physical address. ocrdma
should use physical address for mmap-ing the queue memory for the
applications.
This patch adds the use of virt_to_phys() at all such places where
kernel buffer is mapped to user process context.
Signed-off-by: Devesh Sharma <devesh.sharma@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
Diffstat (limited to 'drivers/infiniband/hw/ocrdma/ocrdma_verbs.c')
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma_verbs.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c index 8f5f2577f288..ef6c78c2f6b9 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_verbs.c @@ -388,7 +388,7 @@ struct ib_ucontext *ocrdma_alloc_ucontext(struct ib_device *ibdev, memset(&resp, 0, sizeof(resp)); resp.ah_tbl_len = ctx->ah_tbl.len; - resp.ah_tbl_page = ctx->ah_tbl.pa; + resp.ah_tbl_page = virt_to_phys(ctx->ah_tbl.va); status = ocrdma_add_mmap(ctx, resp.ah_tbl_page, resp.ah_tbl_len); if (status) @@ -870,7 +870,7 @@ static int ocrdma_copy_cq_uresp(struct ocrdma_dev *dev, struct ocrdma_cq *cq, uresp.page_size = PAGE_ALIGN(cq->len); uresp.num_pages = 1; uresp.max_hw_cqe = cq->max_hw_cqe; - uresp.page_addr[0] = cq->pa; + uresp.page_addr[0] = virt_to_phys(cq->va); uresp.db_page_addr = ocrdma_get_db_addr(dev, uctx->cntxt_pd->id); uresp.db_page_size = dev->nic_info.db_page_size; uresp.phase_change = cq->phase_change ? 1 : 0; @@ -1123,13 +1123,13 @@ static int ocrdma_copy_qp_uresp(struct ocrdma_qp *qp, uresp.sq_dbid = qp->sq.dbid; uresp.num_sq_pages = 1; uresp.sq_page_size = PAGE_ALIGN(qp->sq.len); - uresp.sq_page_addr[0] = qp->sq.pa; + uresp.sq_page_addr[0] = virt_to_phys(qp->sq.va); uresp.num_wqe_allocated = qp->sq.max_cnt; if (!srq) { uresp.rq_dbid = qp->rq.dbid; uresp.num_rq_pages = 1; uresp.rq_page_size = PAGE_ALIGN(qp->rq.len); - uresp.rq_page_addr[0] = qp->rq.pa; + uresp.rq_page_addr[0] = virt_to_phys(qp->rq.va); uresp.num_rqe_allocated = qp->rq.max_cnt; } uresp.db_page_addr = usr_db; @@ -1680,7 +1680,7 @@ static int ocrdma_copy_srq_uresp(struct ocrdma_dev *dev, struct ocrdma_srq *srq, memset(&uresp, 0, sizeof(uresp)); uresp.rq_dbid = srq->rq.dbid; uresp.num_rq_pages = 1; - uresp.rq_page_addr[0] = srq->rq.pa; + uresp.rq_page_addr[0] = virt_to_phys(srq->rq.va); uresp.rq_page_size = srq->rq.len; uresp.db_page_addr = dev->nic_info.unmapped_db + (srq->pd->id * dev->nic_info.db_page_size); |