From: Logan Gunthorpe <logang@deltatee.com>
To: linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
linux-block@vger.kernel.org, linux-pci@vger.kernel.org,
linux-mm@kvack.org, iommu@lists.linux-foundation.org
Cc: "Stephen Bates" <sbates@raithlin.com>,
"Christoph Hellwig" <hch@lst.de>,
"Dan Williams" <dan.j.williams@intel.com>,
"Jason Gunthorpe" <jgg@ziepe.ca>,
"Christian König" <christian.koenig@amd.com>,
"John Hubbard" <jhubbard@nvidia.com>,
"Don Dutile" <ddutile@redhat.com>,
"Matthew Wilcox" <willy@infradead.org>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Jakowski Andrzej" <andrzej.jakowski@intel.com>,
"Minturn Dave B" <dave.b.minturn@intel.com>,
"Jason Ekstrand" <jason@jlekstrand.net>,
"Dave Hansen" <dave.hansen@linux.intel.com>,
"Xiong Jianxin" <jianxin.xiong@intel.com>,
"Bjorn Helgaas" <helgaas@kernel.org>,
"Ira Weiny" <ira.weiny@intel.com>,
"Robin Murphy" <robin.murphy@arm.com>,
"Martin Oliveira" <martin.oliveira@eideticom.com>,
"Chaitanya Kulkarni" <ckulkarnilinux@gmail.com>,
"Logan Gunthorpe" <logang@deltatee.com>,
"Jason Gunthorpe" <jgg@nvidia.com>
Subject: [PATCH v4 13/23] RDMA/rw: drop pci_p2pdma_[un]map_sg()
Date: Wed, 17 Nov 2021 14:54:00 -0700 [thread overview]
Message-ID: <20211117215410.3695-14-logang@deltatee.com> (raw)
In-Reply-To: <20211117215410.3695-1-logang@deltatee.com>
dma_map_sg() now supports the use of P2PDMA pages so pci_p2pdma_map_sg()
is no longer necessary and may be dropped. This means the
rdma_rw_[un]map_sg() helpers are no longer necessary. Remove it all.
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
---
drivers/infiniband/core/rw.c | 45 ++++++++----------------------------
1 file changed, 9 insertions(+), 36 deletions(-)
diff --git a/drivers/infiniband/core/rw.c b/drivers/infiniband/core/rw.c
index 5a3bd41b331c..d4517b68d1ca 100644
--- a/drivers/infiniband/core/rw.c
+++ b/drivers/infiniband/core/rw.c
@@ -273,33 +273,6 @@ static int rdma_rw_init_single_wr(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
return 1;
}
-static void rdma_rw_unmap_sg(struct ib_device *dev, struct scatterlist *sg,
- u32 sg_cnt, enum dma_data_direction dir)
-{
- if (is_pci_p2pdma_page(sg_page(sg)))
- pci_p2pdma_unmap_sg(dev->dma_device, sg, sg_cnt, dir);
- else
- ib_dma_unmap_sg(dev, sg, sg_cnt, dir);
-}
-
-static int rdma_rw_map_sgtable(struct ib_device *dev, struct sg_table *sgt,
- enum dma_data_direction dir)
-{
- int nents;
-
- if (is_pci_p2pdma_page(sg_page(sgt->sgl))) {
- if (WARN_ON_ONCE(ib_uses_virt_dma(dev)))
- return 0;
- nents = pci_p2pdma_map_sg(dev->dma_device, sgt->sgl,
- sgt->orig_nents, dir);
- if (!nents)
- return -EIO;
- sgt->nents = nents;
- return 0;
- }
- return ib_dma_map_sgtable_attrs(dev, sgt, dir, 0);
-}
-
/**
* rdma_rw_ctx_init - initialize a RDMA READ/WRITE context
* @ctx: context to initialize
@@ -326,7 +299,7 @@ int rdma_rw_ctx_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u32 port_num,
};
int ret;
- ret = rdma_rw_map_sgtable(dev, &sgt, dir);
+ ret = ib_dma_map_sgtable_attrs(dev, &sgt, dir, 0);
if (ret)
return ret;
sg_cnt = sgt.nents;
@@ -365,7 +338,7 @@ int rdma_rw_ctx_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp, u32 port_num,
return ret;
out_unmap_sg:
- rdma_rw_unmap_sg(dev, sgt.sgl, sgt.orig_nents, dir);
+ ib_dma_unmap_sgtable_attrs(dev, &sgt, dir, 0);
return ret;
}
EXPORT_SYMBOL(rdma_rw_ctx_init);
@@ -413,12 +386,12 @@ int rdma_rw_ctx_signature_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
return -EINVAL;
}
- ret = rdma_rw_map_sgtable(dev, &sgt, dir);
+ ret = ib_dma_map_sgtable_attrs(dev, &sgt, dir, 0);
if (ret)
return ret;
if (prot_sg_cnt) {
- ret = rdma_rw_map_sgtable(dev, &prot_sgt, dir);
+ ret = ib_dma_map_sgtable_attrs(dev, &prot_sgt, dir, 0);
if (ret)
goto out_unmap_sg;
}
@@ -485,9 +458,9 @@ int rdma_rw_ctx_signature_init(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
kfree(ctx->reg);
out_unmap_prot_sg:
if (prot_sgt.nents)
- rdma_rw_unmap_sg(dev, prot_sgt.sgl, prot_sgt.orig_nents, dir);
+ ib_dma_unmap_sgtable_attrs(dev, &prot_sgt, dir, 0);
out_unmap_sg:
- rdma_rw_unmap_sg(dev, sgt.sgl, sgt.orig_nents, dir);
+ ib_dma_unmap_sgtable_attrs(dev, &sgt, dir, 0);
return ret;
}
EXPORT_SYMBOL(rdma_rw_ctx_signature_init);
@@ -620,7 +593,7 @@ void rdma_rw_ctx_destroy(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
break;
}
- rdma_rw_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
+ ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
}
EXPORT_SYMBOL(rdma_rw_ctx_destroy);
@@ -648,8 +621,8 @@ void rdma_rw_ctx_destroy_signature(struct rdma_rw_ctx *ctx, struct ib_qp *qp,
kfree(ctx->reg);
if (prot_sg_cnt)
- rdma_rw_unmap_sg(qp->pd->device, prot_sg, prot_sg_cnt, dir);
- rdma_rw_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
+ ib_dma_unmap_sg(qp->pd->device, prot_sg, prot_sg_cnt, dir);
+ ib_dma_unmap_sg(qp->pd->device, sg, sg_cnt, dir);
}
EXPORT_SYMBOL(rdma_rw_ctx_destroy_signature);
--
2.30.2
next prev parent reply other threads:[~2021-11-17 21:56 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-11-17 21:53 [PATCH v4 00/23] Userspace P2PDMA with O_DIRECT NVMe devices Logan Gunthorpe
2021-11-17 21:53 ` [PATCH v4 01/23] lib/scatterlist: cleanup macros into static inline functions Logan Gunthorpe
2021-12-13 21:51 ` Chaitanya Kulkarni
2021-12-21 9:00 ` Christoph Hellwig
2021-12-21 17:23 ` Logan Gunthorpe
2021-12-22 8:22 ` Christoph Hellwig
2021-11-17 21:53 ` [PATCH v4 02/23] lib/scatterlist: add flag for indicating P2PDMA segments in an SGL Logan Gunthorpe
2021-12-13 21:55 ` Chaitanya Kulkarni
2021-12-21 9:02 ` Christoph Hellwig
2021-11-17 21:53 ` [PATCH v4 03/23] PCI/P2PDMA: Attempt to set map_type if it has not been set Logan Gunthorpe
2021-12-13 22:00 ` Chaitanya Kulkarni
2021-11-17 21:53 ` [PATCH v4 04/23] PCI/P2PDMA: Expose pci_p2pdma_map_type() Logan Gunthorpe
2021-12-13 22:05 ` Chaitanya Kulkarni
2021-11-17 21:53 ` [PATCH v4 05/23] PCI/P2PDMA: Introduce helpers for dma_map_sg implementations Logan Gunthorpe
2021-11-17 21:53 ` [PATCH v4 06/23] dma-mapping: allow EREMOTEIO return code for P2PDMA transfers Logan Gunthorpe
2021-11-17 21:53 ` [PATCH v4 07/23] dma-direct: support PCI P2PDMA pages in dma-direct map_sg Logan Gunthorpe
2021-11-17 21:53 ` [PATCH v4 08/23] dma-mapping: add flags to dma_map_ops to indicate PCI P2PDMA support Logan Gunthorpe
2021-11-17 21:53 ` [PATCH v4 09/23] iommu/dma: support PCI P2PDMA pages in dma-iommu map_sg Logan Gunthorpe
2021-11-17 21:53 ` [PATCH v4 10/23] nvme-pci: check DMA ops when indicating support for PCI P2PDMA Logan Gunthorpe
2021-12-13 22:10 ` Chaitanya Kulkarni
2021-11-17 21:53 ` [PATCH v4 11/23] nvme-pci: convert to using dma_map_sgtable() Logan Gunthorpe
2021-12-13 22:21 ` Chaitanya Kulkarni
2021-12-13 22:28 ` Logan Gunthorpe
2021-11-17 21:53 ` [PATCH v4 12/23] RDMA/core: introduce ib_dma_pci_p2p_dma_supported() Logan Gunthorpe
2021-11-17 21:54 ` Logan Gunthorpe [this message]
2021-11-17 21:54 ` [PATCH v4 14/23] PCI/P2PDMA: Remove pci_p2pdma_[un]map_sg() Logan Gunthorpe
2021-11-17 21:54 ` [PATCH v4 15/23] mm: introduce FOLL_PCI_P2PDMA to gate getting PCI P2PDMA pages Logan Gunthorpe
2021-11-17 21:54 ` [PATCH v4 16/23] iov_iter: introduce iov_iter_get_pages_[alloc_]flags() Logan Gunthorpe
2021-12-21 9:04 ` Christoph Hellwig
2021-11-17 21:54 ` [PATCH v4 17/23] block: add check when merging zone device pages Logan Gunthorpe
2021-12-21 9:05 ` Christoph Hellwig
2021-11-17 21:54 ` [PATCH v4 18/23] lib/scatterlist: " Logan Gunthorpe
2021-11-17 21:54 ` [PATCH v4 19/23] block: set FOLL_PCI_P2PDMA in __bio_iov_iter_get_pages() Logan Gunthorpe
2021-11-17 21:54 ` [PATCH v4 20/23] block: set FOLL_PCI_P2PDMA in bio_map_user_iov() Logan Gunthorpe
2021-11-17 21:54 ` [PATCH v4 21/23] mm: use custom page_free for P2PDMA pages Logan Gunthorpe
2021-12-21 9:06 ` Christoph Hellwig
2021-12-21 17:27 ` Logan Gunthorpe
2021-11-17 21:54 ` [PATCH v4 22/23] PCI/P2PDMA: Introduce pci_mmap_p2pmem() Logan Gunthorpe
2021-11-17 21:54 ` [PATCH v4 23/23] nvme-pci: allow mmaping the CMB in userspace Logan Gunthorpe
2021-12-21 9:07 ` Christoph Hellwig
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