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>, "Ralph Campbell" <rcampbell@nvidia.com>, "Logan Gunthorpe" <logang@deltatee.com>, "Bjorn Helgaas" <bhelgaas@google.com>, "Jason Gunthorpe" <jgg@nvidia.com>, "Max Gurtovoy" <mgurtovoy@nvidia.com> Subject: [PATCH v5 15/24] PCI/P2PDMA: Remove pci_p2pdma_[un]map_sg() Date: Thu, 27 Jan 2022 17:26:05 -0700 [thread overview] Message-ID: <20220128002614.6136-16-logang@deltatee.com> (raw) In-Reply-To: <20220128002614.6136-1-logang@deltatee.com> This interface is superseded by support in dma_map_sg() which now supports heterogeneous scatterlists. There are no longer any users, so remove it. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com> --- drivers/pci/p2pdma.c | 66 -------------------------------------- include/linux/pci-p2pdma.h | 27 ---------------- 2 files changed, 93 deletions(-) diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index 2b2cf00664e7..e66694cc9e14 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -879,72 +879,6 @@ enum pci_p2pdma_map_type pci_p2pdma_map_type(struct dev_pagemap *pgmap, return type; } -static int __pci_p2pdma_map_sg(struct pci_p2pdma_pagemap *p2p_pgmap, - struct device *dev, struct scatterlist *sg, int nents) -{ - struct scatterlist *s; - int i; - - for_each_sg(sg, s, nents, i) { - s->dma_address = sg_phys(s) + p2p_pgmap->bus_offset; - sg_dma_len(s) = s->length; - } - - return nents; -} - -/** - * pci_p2pdma_map_sg_attrs - map a PCI peer-to-peer scatterlist for DMA - * @dev: device doing the DMA request - * @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 be unmapped using - * pci_p2pdma_unmap_sg_attrs(). - * - * Returns the number of SG entries mapped or 0 on error. - */ -int pci_p2pdma_map_sg_attrs(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir, unsigned long attrs) -{ - struct pci_p2pdma_pagemap *p2p_pgmap = - to_p2p_pgmap(sg_page(sg)->pgmap); - - switch (pci_p2pdma_map_type(sg_page(sg)->pgmap, dev)) { - case PCI_P2PDMA_MAP_THRU_HOST_BRIDGE: - return dma_map_sg_attrs(dev, sg, nents, dir, attrs); - case PCI_P2PDMA_MAP_BUS_ADDR: - return __pci_p2pdma_map_sg(p2p_pgmap, dev, sg, nents); - default: - /* Mapping is not Supported */ - return 0; - } -} -EXPORT_SYMBOL_GPL(pci_p2pdma_map_sg_attrs); - -/** - * pci_p2pdma_unmap_sg_attrs - unmap a PCI peer-to-peer scatterlist that was - * mapped with pci_p2pdma_map_sg() - * @dev: device doing the DMA request - * @sg: scatter list to map - * @nents: number of elements returned by pci_p2pdma_map_sg() - * @dir: DMA direction - * @attrs: DMA attributes passed to dma_unmap_sg() (if called) - */ -void pci_p2pdma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir, unsigned long attrs) -{ - enum pci_p2pdma_map_type map_type; - - map_type = pci_p2pdma_map_type(sg_page(sg)->pgmap, dev); - - if (map_type == PCI_P2PDMA_MAP_THRU_HOST_BRIDGE) - dma_unmap_sg_attrs(dev, sg, nents, dir, attrs); -} -EXPORT_SYMBOL_GPL(pci_p2pdma_unmap_sg_attrs); - /** * pci_p2pdma_map_segment - map an sg segment determining the mapping type * @state: State structure that should be declared outside of the for_each_sg() diff --git a/include/linux/pci-p2pdma.h b/include/linux/pci-p2pdma.h index 8318a97c9c61..2c07aa6b7665 100644 --- a/include/linux/pci-p2pdma.h +++ b/include/linux/pci-p2pdma.h @@ -30,10 +30,6 @@ 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_attrs(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir, unsigned long attrs); -void pci_p2pdma_unmap_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, @@ -83,17 +79,6 @@ 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_attrs(struct device *dev, - struct scatterlist *sg, int nents, enum dma_data_direction dir, - unsigned long attrs) -{ - return 0; -} -static inline void pci_p2pdma_unmap_sg_attrs(struct device *dev, - struct scatterlist *sg, int nents, enum dma_data_direction dir, - unsigned long attrs) -{ -} static inline int pci_p2pdma_enable_store(const char *page, struct pci_dev **p2p_dev, bool *use_p2pdma) { @@ -119,16 +104,4 @@ 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); -} - -static inline void pci_p2pdma_unmap_sg(struct device *dev, - struct scatterlist *sg, int nents, enum dma_data_direction dir) -{ - pci_p2pdma_unmap_sg_attrs(dev, sg, nents, dir, 0); -} - #endif /* _LINUX_PCI_P2P_H */ -- 2.30.2
WARNING: multiple messages have this Message-ID (diff)
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: "Daniel Vetter" <daniel.vetter@ffwll.ch>, "Dave Hansen" <dave.hansen@linux.intel.com>, "Stephen Bates" <sbates@raithlin.com>, "Jason Ekstrand" <jason@jlekstrand.net>, "Ira Weiny" <ira.weiny@intel.com>, "Christoph Hellwig" <hch@lst.de>, "Minturn Dave B" <dave.b.minturn@intel.com>, "Martin Oliveira" <martin.oliveira@eideticom.com>, "Matthew Wilcox" <willy@infradead.org>, "Jason Gunthorpe" <jgg@ziepe.ca>, "Chaitanya Kulkarni" <ckulkarnilinux@gmail.com>, "Bjorn Helgaas" <helgaas@kernel.org>, "Jason Gunthorpe" <jgg@nvidia.com>, "Ralph Campbell" <rcampbell@nvidia.com>, "John Hubbard" <jhubbard@nvidia.com>, "Bjorn Helgaas" <bhelgaas@google.com>, "Dan Williams" <dan.j.williams@intel.com>, "Jakowski Andrzej" <andrzej.jakowski@intel.com>, "Xiong Jianxin" <jianxin.xiong@intel.com>, "Max Gurtovoy" <mgurtovoy@nvidia.com>, "Logan Gunthorpe" <logang@deltatee.com>, "Robin Murphy" <robin.murphy@arm.com>, "Christian König" <christian.koenig@amd.com> Subject: [PATCH v5 15/24] PCI/P2PDMA: Remove pci_p2pdma_[un]map_sg() Date: Thu, 27 Jan 2022 17:26:05 -0700 [thread overview] Message-ID: <20220128002614.6136-16-logang@deltatee.com> (raw) In-Reply-To: <20220128002614.6136-1-logang@deltatee.com> This interface is superseded by support in dma_map_sg() which now supports heterogeneous scatterlists. There are no longer any users, so remove it. Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Reviewed-by: Max Gurtovoy <mgurtovoy@nvidia.com> --- drivers/pci/p2pdma.c | 66 -------------------------------------- include/linux/pci-p2pdma.h | 27 ---------------- 2 files changed, 93 deletions(-) diff --git a/drivers/pci/p2pdma.c b/drivers/pci/p2pdma.c index 2b2cf00664e7..e66694cc9e14 100644 --- a/drivers/pci/p2pdma.c +++ b/drivers/pci/p2pdma.c @@ -879,72 +879,6 @@ enum pci_p2pdma_map_type pci_p2pdma_map_type(struct dev_pagemap *pgmap, return type; } -static int __pci_p2pdma_map_sg(struct pci_p2pdma_pagemap *p2p_pgmap, - struct device *dev, struct scatterlist *sg, int nents) -{ - struct scatterlist *s; - int i; - - for_each_sg(sg, s, nents, i) { - s->dma_address = sg_phys(s) + p2p_pgmap->bus_offset; - sg_dma_len(s) = s->length; - } - - return nents; -} - -/** - * pci_p2pdma_map_sg_attrs - map a PCI peer-to-peer scatterlist for DMA - * @dev: device doing the DMA request - * @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 be unmapped using - * pci_p2pdma_unmap_sg_attrs(). - * - * Returns the number of SG entries mapped or 0 on error. - */ -int pci_p2pdma_map_sg_attrs(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir, unsigned long attrs) -{ - struct pci_p2pdma_pagemap *p2p_pgmap = - to_p2p_pgmap(sg_page(sg)->pgmap); - - switch (pci_p2pdma_map_type(sg_page(sg)->pgmap, dev)) { - case PCI_P2PDMA_MAP_THRU_HOST_BRIDGE: - return dma_map_sg_attrs(dev, sg, nents, dir, attrs); - case PCI_P2PDMA_MAP_BUS_ADDR: - return __pci_p2pdma_map_sg(p2p_pgmap, dev, sg, nents); - default: - /* Mapping is not Supported */ - return 0; - } -} -EXPORT_SYMBOL_GPL(pci_p2pdma_map_sg_attrs); - -/** - * pci_p2pdma_unmap_sg_attrs - unmap a PCI peer-to-peer scatterlist that was - * mapped with pci_p2pdma_map_sg() - * @dev: device doing the DMA request - * @sg: scatter list to map - * @nents: number of elements returned by pci_p2pdma_map_sg() - * @dir: DMA direction - * @attrs: DMA attributes passed to dma_unmap_sg() (if called) - */ -void pci_p2pdma_unmap_sg_attrs(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir, unsigned long attrs) -{ - enum pci_p2pdma_map_type map_type; - - map_type = pci_p2pdma_map_type(sg_page(sg)->pgmap, dev); - - if (map_type == PCI_P2PDMA_MAP_THRU_HOST_BRIDGE) - dma_unmap_sg_attrs(dev, sg, nents, dir, attrs); -} -EXPORT_SYMBOL_GPL(pci_p2pdma_unmap_sg_attrs); - /** * pci_p2pdma_map_segment - map an sg segment determining the mapping type * @state: State structure that should be declared outside of the for_each_sg() diff --git a/include/linux/pci-p2pdma.h b/include/linux/pci-p2pdma.h index 8318a97c9c61..2c07aa6b7665 100644 --- a/include/linux/pci-p2pdma.h +++ b/include/linux/pci-p2pdma.h @@ -30,10 +30,6 @@ 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_attrs(struct device *dev, struct scatterlist *sg, - int nents, enum dma_data_direction dir, unsigned long attrs); -void pci_p2pdma_unmap_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, @@ -83,17 +79,6 @@ 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_attrs(struct device *dev, - struct scatterlist *sg, int nents, enum dma_data_direction dir, - unsigned long attrs) -{ - return 0; -} -static inline void pci_p2pdma_unmap_sg_attrs(struct device *dev, - struct scatterlist *sg, int nents, enum dma_data_direction dir, - unsigned long attrs) -{ -} static inline int pci_p2pdma_enable_store(const char *page, struct pci_dev **p2p_dev, bool *use_p2pdma) { @@ -119,16 +104,4 @@ 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); -} - -static inline void pci_p2pdma_unmap_sg(struct device *dev, - struct scatterlist *sg, int nents, enum dma_data_direction dir) -{ - pci_p2pdma_unmap_sg_attrs(dev, sg, nents, dir, 0); -} - #endif /* _LINUX_PCI_P2P_H */ -- 2.30.2 _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2022-01-28 0:26 UTC|newest] Thread overview: 72+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-01-28 0:25 [PATCH v5 00/24] Userspace P2PDMA with O_DIRECT NVMe devices Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-01-28 0:25 ` [PATCH v5 01/24] ext4/xfs: add page refcount helper Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-01-28 9:26 ` Chaitanya Kulkarni 2022-01-28 9:26 ` Chaitanya Kulkarni via iommu 2022-01-28 0:25 ` [PATCH v5 02/24] mm: remove extra ZONE_DEVICE struct page refcount Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-01-28 14:21 ` Jason Gunthorpe 2022-01-28 14:21 ` Jason Gunthorpe 2022-01-28 16:51 ` Logan Gunthorpe 2022-01-28 16:51 ` Logan Gunthorpe 2022-01-28 17:16 ` Ralph Campbell 2022-01-28 17:16 ` Ralph Campbell via iommu 2022-01-28 0:25 ` [PATCH v5 03/24] lib/scatterlist: add flag for indicating P2PDMA segments in an SGL Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-01-28 0:25 ` [PATCH v5 04/24] PCI/P2PDMA: Attempt to set map_type if it has not been set Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-01-28 0:25 ` [PATCH v5 05/24] PCI/P2PDMA: Expose pci_p2pdma_map_type() Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-01-28 0:25 ` [PATCH v5 06/24] PCI/P2PDMA: Introduce helpers for dma_map_sg implementations Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-01-28 0:25 ` [PATCH v5 07/24] dma-mapping: allow EREMOTEIO return code for P2PDMA transfers Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-01-28 0:25 ` [PATCH v5 08/24] dma-direct: support PCI P2PDMA pages in dma-direct map_sg Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-02-01 20:53 ` Jonathan Derrick 2022-02-01 20:53 ` Jonathan Derrick 2022-02-01 20:57 ` Logan Gunthorpe 2022-02-01 20:57 ` Logan Gunthorpe 2022-01-28 0:25 ` [PATCH v5 09/24] dma-mapping: add flags to dma_map_ops to indicate PCI P2PDMA support Logan Gunthorpe 2022-01-28 0:25 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 10/24] iommu/dma: support PCI P2PDMA pages in dma-iommu map_sg Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 11/24] nvme-pci: check DMA ops when indicating support for PCI P2PDMA Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 12/24] nvme-pci: convert to using dma_map_sgtable() Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 9:13 ` Chaitanya Kulkarni 2022-01-28 9:13 ` Chaitanya Kulkarni via iommu 2022-01-28 0:26 ` [PATCH v5 13/24] RDMA/core: introduce ib_dma_pci_p2p_dma_supported() Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 14/24] RDMA/rw: drop pci_p2pdma_[un]map_sg() Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe [this message] 2022-01-28 0:26 ` [PATCH v5 15/24] PCI/P2PDMA: Remove pci_p2pdma_[un]map_sg() Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 16/24] mm: introduce FOLL_PCI_P2PDMA to gate getting PCI P2PDMA pages Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 17/24] iov_iter: introduce iov_iter_get_pages_[alloc_]flags() Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 18/24] block: add check when merging zone device pages Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 19/24] lib/scatterlist: " Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 20/24] block: set FOLL_PCI_P2PDMA in __bio_iov_iter_get_pages() Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 21/24] block: set FOLL_PCI_P2PDMA in bio_map_user_iov() Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 22/24] mm: use custom page_free for P2PDMA pages Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 14:22 ` Jason Gunthorpe 2022-01-28 14:22 ` Jason Gunthorpe 2022-01-28 16:52 ` Logan Gunthorpe 2022-01-28 16:52 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 23/24] PCI/P2PDMA: Introduce pci_mmap_p2pmem() Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-28 0:26 ` [PATCH v5 24/24] nvme-pci: allow mmaping the CMB in userspace Logan Gunthorpe 2022-01-28 0:26 ` Logan Gunthorpe 2022-01-31 18:56 ` [PATCH v5 00/24] Userspace P2PDMA with O_DIRECT NVMe devices Jonathan Derrick 2022-01-31 18:56 ` Jonathan Derrick 2022-01-31 19:00 ` Logan Gunthorpe 2022-01-31 19:00 ` Logan Gunthorpe
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