From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4C64C76194 for ; Mon, 22 Jul 2019 23:09:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id C7004219BE for ; Mon, 22 Jul 2019 23:09:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2387406AbfGVXJU (ORCPT ); Mon, 22 Jul 2019 19:09:20 -0400 Received: from ale.deltatee.com ([207.54.116.67]:40350 "EHLO ale.deltatee.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1733307AbfGVXJS (ORCPT ); Mon, 22 Jul 2019 19:09:18 -0400 Received: from cgy1-donard.priv.deltatee.com ([172.16.1.31]) by ale.deltatee.com with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1hphQb-0002k2-Dk; Mon, 22 Jul 2019 17:09:18 -0600 Received: from gunthorp by cgy1-donard.priv.deltatee.com with local (Exim 4.89) (envelope-from ) id 1hphQW-0001Qz-4f; Mon, 22 Jul 2019 17:09:04 -0600 From: Logan Gunthorpe To: linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, linux-nvme@lists.infradead.org, linux-rdma@vger.kernel.org Cc: Bjorn Helgaas , Christoph Hellwig , Christian Koenig , Jason Gunthorpe , Sagi Grimberg , Keith Busch , Jens Axboe , Dan Williams , Eric Pilmore , Stephen Bates , Logan Gunthorpe Date: Mon, 22 Jul 2019 17:08:53 -0600 Message-Id: <20190722230859.5436-9-logang@deltatee.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190722230859.5436-1-logang@deltatee.com> References: <20190722230859.5436-1-logang@deltatee.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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-pci@vger.kernel.org, linux-rdma@vger.kernel.org, bhelgaas@google.com, hch@lst.de, Christian.Koenig@amd.com, jgg@mellanox.com, sagi@grimberg.me, kbusch@kernel.org, axboe@fb.com, dan.j.williams@intel.com, epilmore@gigaio.com, sbates@raithlin.com, logang@deltatee.com X-SA-Exim-Mail-From: gunthorp@deltatee.com Subject: [PATCH 08/14] PCI/P2PDMA: Add attrs argument to pci_p2pdma_map_sg() X-SA-Exim-Version: 4.2.1 (built Tue, 02 Aug 2016 21:08:31 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Sender: linux-pci-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org This is to match the dma_map_sg() API which this function will have to call in an future patch. Adds a pci_p2pdma_map_sg_attrs() function and helper to call it with no attributes just like the dma_map_sg() function. Signed-off-by: Logan Gunthorpe --- drivers/nvme/host/pci.c | 4 ++-- drivers/pci/p2pdma.c | 7 ++++--- include/linux/pci-p2pdma.h | 15 +++++++++++---- 3 files changed, 17 insertions(+), 9 deletions(-) diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c index bb970ca82517..7747712054cd 100644 --- a/drivers/nvme/host/pci.c +++ b/drivers/nvme/host/pci.c @@ -832,8 +832,8 @@ static blk_status_t nvme_map_data(struct nvme_dev *dev, struct request *req, goto out; if (is_pci_p2pdma_page(sg_page(iod->sg))) - nr_mapped = pci_p2pdma_map_sg(dev->dev, iod->sg, iod->nents, - rq_dma_dir(req)); + nr_mapped = pci_p2pdma_map_sg_attrs(dev->dev, iod->sg, + iod->nents, rq_dma_dir(req), DMA_ATTR_NO_WARN); else nr_mapped = dma_map_sg_attrs(dev->dev, iod->sg, iod->nents, rq_dma_dir(req), DMA_ATTR_NO_WARN); diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index 70c262b7c731..ce361e287543 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -791,13 +791,14 @@ EXPORT_SYMBOL_GPL(pci_p2pmem_publish); * @sg: scatter list to map * @nents: elements in the scatterlist * @dir: DMA direction + * @attrs: dma attributes passed to dma_map_sg() (if called) * * Scatterlists mapped with this function should not be unmapped in any way. * * Returns the number of SG entries mapped or 0 on error. */ -int pci_p2pdma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir) +int pci_p2pdma_map_sg_attrs(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir, unsigned long attrs) { struct dev_pagemap *pgmap; struct scatterlist *s; @@ -824,7 +825,7 @@ int pci_p2pdma_map_sg(struct device *dev, struct scatterlist *sg, int nents, return nents; } -EXPORT_SYMBOL_GPL(pci_p2pdma_map_sg); +EXPORT_SYMBOL_GPL(pci_p2pdma_map_sg_attrs); /** * pci_p2pdma_enable_store - parse a configfs/sysfs attribute store diff --git a/include/linux/pci-p2pdma.h b/include/linux/pci-p2pdma.h index bca9bc3e5be7..7fd51954f93a 100644 --- a/include/linux/pci-p2pdma.h +++ b/include/linux/pci-p2pdma.h @@ -30,8 +30,8 @@ struct scatterlist *pci_p2pmem_alloc_sgl(struct pci_dev *pdev, unsigned int *nents, u32 length); void pci_p2pmem_free_sgl(struct pci_dev *pdev, struct scatterlist *sgl); void pci_p2pmem_publish(struct pci_dev *pdev, bool publish); -int pci_p2pdma_map_sg(struct device *dev, struct scatterlist *sg, int nents, - enum dma_data_direction dir); +int pci_p2pdma_map_sg_attrs(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir, unsigned long attrs); int pci_p2pdma_enable_store(const char *page, struct pci_dev **p2p_dev, bool *use_p2pdma); ssize_t pci_p2pdma_enable_show(char *page, struct pci_dev *p2p_dev, @@ -81,8 +81,9 @@ static inline void pci_p2pmem_free_sgl(struct pci_dev *pdev, static inline void pci_p2pmem_publish(struct pci_dev *pdev, bool publish) { } -static inline int pci_p2pdma_map_sg(struct device *dev, - struct scatterlist *sg, int nents, enum dma_data_direction dir) +static inline int pci_p2pdma_map_sg_attrs(struct device *dev, + struct scatterlist *sg, int nents, enum dma_data_direction dir, + unsigned long attrs) { return 0; } @@ -111,4 +112,10 @@ static inline struct pci_dev *pci_p2pmem_find(struct device *client) return pci_p2pmem_find_many(&client, 1); } +static inline int pci_p2pdma_map_sg(struct device *dev, struct scatterlist *sg, + int nents, enum dma_data_direction dir) +{ + return pci_p2pdma_map_sg_attrs(dev, sg, nents, dir, 0); +} + #endif /* _LINUX_PCI_P2P_H */ -- 2.20.1