diff options
author | Jason Gunthorpe <jgg@nvidia.com> | 2020-10-08 11:27:52 +0300 |
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committer | Jason Gunthorpe <jgg@nvidia.com> | 2020-10-16 19:53:46 +0300 |
commit | e0477b34d9d11c1a7b1f80bfdbcdc8952ce2adb7 (patch) | |
tree | 6c0d2fe7d73edaf004a390af77b6c39d650ac83e /drivers/infiniband/sw/rdmavt | |
parent | 9a40401cfa1356b0d169be8470ed7b2edc33b98f (diff) | |
download | linux-e0477b34d9d11c1a7b1f80bfdbcdc8952ce2adb7.tar.xz |
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/sw/rdmavt')
-rw-r--r-- | drivers/infiniband/sw/rdmavt/vt.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/infiniband/sw/rdmavt/vt.c b/drivers/infiniband/sw/rdmavt/vt.c index 2d534c450f3c..52218684ad4a 100644 --- a/drivers/infiniband/sw/rdmavt/vt.c +++ b/drivers/infiniband/sw/rdmavt/vt.c @@ -579,7 +579,9 @@ int rvt_register_device(struct rvt_dev_info *rdi) spin_lock_init(&rdi->n_cqs_lock); /* DMA Operations */ - rdi->ibdev.dev.dma_ops = rdi->ibdev.dev.dma_ops ? : &dma_virt_ops; + rdi->ibdev.dev.dma_parms = rdi->ibdev.dev.parent->dma_parms; + dma_set_coherent_mask(&rdi->ibdev.dev, + rdi->ibdev.dev.parent->coherent_dma_mask); /* Protection Domain */ spin_lock_init(&rdi->n_pds_lock); @@ -627,7 +629,7 @@ int rvt_register_device(struct rvt_dev_info *rdi) rdi->ibdev.num_comp_vectors = 1; /* We are now good to announce we exist */ - ret = ib_register_device(&rdi->ibdev, dev_name(&rdi->ibdev.dev)); + ret = ib_register_device(&rdi->ibdev, dev_name(&rdi->ibdev.dev), NULL); if (ret) { rvt_pr_err(rdi, "Failed to register driver with ib core.\n"); goto bail_wss; |