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Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1o1VdR-0084iS-3j; Wed, 15 Jun 2022 10:12:50 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.94.2) (envelope-from ) id 1o1VdI-0004aU-Bw; Wed, 15 Jun 2022 10:12:40 -0600 From: Logan Gunthorpe 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 , Christoph Hellwig , Dan Williams , Jason Gunthorpe , =?utf-8?q?Christian_K=C3=B6nig?= , John Hubbard , Don Dutile , Matthew Wilcox , Daniel Vetter , Minturn Dave B , Jason Ekstrand , Dave Hansen , Xiong Jianxin , Bjorn Helgaas , Ira Weiny , Robin Murphy , Martin Oliveira , Chaitanya Kulkarni , Ralph Campbell , Logan Gunthorpe , Jason Gunthorpe Date: Wed, 15 Jun 2022 10:12:24 -0600 Message-Id: <20220615161233.17527-13-logang@deltatee.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220615161233.17527-1-logang@deltatee.com> References: <20220615161233.17527-1-logang@deltatee.com> MIME-Version: 1.0 X-SA-Exim-Connect-IP: 172.16.1.31 X-SA-Exim-Rcpt-To: linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-pci@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, sbates@raithlin.com, hch@lst.de, jgg@ziepe.ca, christian.koenig@amd.com, ddutile@redhat.com, willy@infradead.org, daniel.vetter@ffwll.ch, jason@jlekstrand.net, dave.hansen@linux.intel.com, helgaas@kernel.org, dan.j.williams@intel.com, dave.b.minturn@intel.com, jianxin.xiong@intel.com, ira.weiny@intel.com, robin.murphy@arm.com, martin.oliveira@eideticom.com, ckulkarnilinux@gmail.com, logang@deltatee.com, jhubbard@nvidia.com, rcampbell@nvidia.com, jgg@nvidia.com X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH v7 12/21] RDMA/rw: drop pci_p2pdma_[un]map_sg() X-SA-Exim-Version: 4.2.1 (built Sat, 13 Feb 2021 17:57:42 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) ARC-Message-Signature: i=1; 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dkim=pass header.d=deltatee.com header.s=20200525 header.b="AJS/ErU6"; dmarc=pass (policy=none) header.from=deltatee.com; spf=pass (imf31.hostedemail.com: domain of gunthorp@deltatee.com designates 204.191.154.188 as permitted sender) smtp.mailfrom=gunthorp@deltatee.com X-Rspamd-Server: rspam12 X-Rspam-User: X-Stat-Signature: ggjp3xhnn5qtx8t3oyku7k16bzbjdkb7 X-Rspamd-Queue-Id: 0D736200A9 X-HE-Tag: 1655312094-988570 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 Reviewed-by: Jason Gunthorpe Reviewed-by: Christoph Hellwig --- 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 4d98f931a13d..8367974b7998 100644 --- a/drivers/infiniband/core/rw.c +++ b/drivers/infiniband/core/rw.c @@ -274,33 +274,6 @@ 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 @@ -327,7 +300,7 @@ 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; @@ -366,7 +339,7 @@ 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); @@ -414,12 +387,12 @@ 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; } @@ -486,9 +459,9 @@ 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); @@ -621,7 +594,7 @@ 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); @@ -649,8 +622,8 @@ 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);