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| author |   Jason Gunthorpe <jgg@nvidia.com> | 2020-10-08 11:27:52 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-10-16 13:53:46 -0300 |
| commit | e0477b34d9d11c1a7b1f80bfdbcdc8952ce2adb7 (patch) | |
| tree | 6c0d2fe7d73edaf004a390af77b6c39d650ac83e /drivers/infiniband/hw/ocrdma | |
| parent | lib/scatterlist: Do not limit max_segment to PAGE_ALIGNED values (diff) | |
| download | linux-dev-e0477b34d9d11c1a7b1f80bfdbcdc8952ce2adb7.tar.xz linux-dev-e0477b34d9d11c1a7b1f80bfdbcdc8952ce2adb7.zip | |
RDMA: Explicitly pass in the dma_device to ib_register_device
The code in setup_dma_device has become rather convoluted, move all of
this to the drivers. Drives now pass in a DMA capable struct device which
will be used to setup DMA, or drivers must fully configure the ibdev for
DMA and pass in NULL.
Other than setting the masks in rvt all drivers were doing this already
anyhow.
mthca, mlx4 and mlx5 were already setting up maximum DMA segment size for
DMA based on their hardweare limits in:
__mthca_init_one()
dma_set_max_seg_size (1G)
__mlx4_init_one()
dma_set_max_seg_size (1G)
mlx5_pci_init()
set_dma_caps()
dma_set_max_seg_size (2G)
Other non software drivers (except usnic) were extended to UINT_MAX [1, 2]
instead of 2G as was before.
[1] https://lore.kernel.org/linux-rdma/20200924114940.GE9475@nvidia.com/
[2] https://lore.kernel.org/linux-rdma/20200924114940.GE9475@nvidia.com/
Link: https://lore.kernel.org/r/20201008082752.275846-1-leon@kernel.org
Link: https://lore.kernel.org/r/6b2ed339933d066622d5715903870676d8cc523a.1602590106.git.mchehab+huawei@kernel.org
Suggested-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Parav Pandit <parav@nvidia.com>
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Diffstat (limited to 'drivers/infiniband/hw/ocrdma')
| -rw-r--r-- | drivers/infiniband/hw/ocrdma/ocrdma_main.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/infiniband/hw/ocrdma/ocrdma_main.c b/drivers/infiniband/hw/ocrdma/ocrdma_main.c index d8c47d24d6d6..9b96661a7143 100644 --- a/drivers/infiniband/hw/ocrdma/ocrdma_main.c +++ b/drivers/infiniband/hw/ocrdma/ocrdma_main.c @@ -255,7 +255,9 @@ static int ocrdma_register_device(struct ocrdma_dev *dev) if (ret) return ret; - return ib_register_device(&dev->ibdev, "ocrdma%d"); + dma_set_max_seg_size(&dev->nic_info.pdev->dev, UINT_MAX); + return ib_register_device(&dev->ibdev, "ocrdma%d", + &dev->nic_info.pdev->dev); } static int ocrdma_alloc_resources(struct ocrdma_dev *dev) |