diff options
| author | Christoph Hellwig <hch@lst.de> | 2020-11-06 19:19:38 +0100 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-11-17 15:22:07 -0400 |
| commit | 5a7a9e038b032137ae9c45d5429f18a2ffdf7d42 (patch) | |
| tree | 39f0d285c032b578c125978129add2e57803e5ab /drivers/infiniband/sw/rdmavt/vt.c | |
| parent | 42f2611cc1738b201701e717246e11e86bef4e1e (diff) | |
RDMA/core: remove use of dma_virt_ops
Use the ib_dma_* helpers to skip the DMA translation instead. This
removes the last user if dma_virt_ops and keeps the weird layering
violation inside the RDMA core instead of burderning the DMA mapping
subsystems with it. This also means the software RDMA drivers now don't
have to mess with DMA parameters that are not relevant to them at all, and
that in the future we can use PCI P2P transfers even for software RDMA, as
there is no first fake layer of DMA mapping that the P2P DMA support.
Link: https://lore.kernel.org/r/20201106181941.1878556-8-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/sw/rdmavt/vt.c')
| -rw-r--r-- | drivers/infiniband/sw/rdmavt/vt.c | 8 |
1 files changed, 0 insertions, 8 deletions
diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c index 5bd817490b1f..49cec85a372a 100644 --- a/drivers/infiniband/sw/rdmavt/vt.c +++ b/drivers/infiniband/sw/rdmavt/vt.c @@ -525,7 +525,6 @@ static noinline int check_support(struct rvt_dev_info *rdi, int verb) int rvt_register_device(struct rvt_dev_info *rdi) { int ret = 0, i; - u64 dma_mask; if (!rdi) return -EINVAL; @@ -580,13 +579,6 @@ int rvt_register_device(struct rvt_dev_info *rdi) /* Completion queues */ spin_lock_init(&rdi->n_cqs_lock); - /* DMA Operations */ - rdi->ibdev.dev.dma_parms = rdi->ibdev.dev.parent->dma_parms; - dma_mask = IS_ENABLED(CONFIG_64BIT) ? DMA_BIT_MASK(64) : DMA_BIT_MASK(32); - ret = dma_coerce_mask_and_coherent(&rdi->ibdev.dev, dma_mask); - if (ret) - goto bail_wss; - /* Protection Domain */ spin_lock_init(&rdi->n_pds_lock); rdi->n_pds_allocated = 0; |