From: Leon Romanovsky <leon@kernel.org> To: Christoph Hellwig <hch@lst.de>, Robin Murphy <robin.murphy@arm.com>, Marek Szyprowski <m.szyprowski@samsung.com>, Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>, Jason Gunthorpe <jgg@ziepe.ca>, Chaitanya Kulkarni <chaitanyak@nvidia.com> Cc: "Leon Romanovsky" <leonro@nvidia.com>, "Jonathan Corbet" <corbet@lwn.net>, "Jens Axboe" <axboe@kernel.dk>, "Keith Busch" <kbusch@kernel.org>, "Sagi Grimberg" <sagi@grimberg.me>, "Yishai Hadas" <yishaih@nvidia.com>, "Shameer Kolothum" <shameerali.kolothum.thodi@huawei.com>, "Kevin Tian" <kevin.tian@intel.com>, "Alex Williamson" <alex.williamson@redhat.com>, "Jérôme Glisse" <jglisse@redhat.com>, "Andrew Morton" <akpm@linux-foundation.org>, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, linux-nvme@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, "Bart Van Assche" <bvanassche@acm.org>, "Damien Le Moal" <damien.lemoal@opensource.wdc.com>, "Amir Goldstein" <amir73il@gmail.com>, "josef@toxicpanda.com" <josef@toxicpanda.com>, "Martin K. Petersen" <martin.petersen@oracle.com>, "daniel@iogearbox.net" <daniel@iogearbox.net>, "Dan Williams" <dan.j.williams@intel.com>, "jack@suse.com" <jack@suse.com>, "Zhu Yanjun" <zyjzyj2000@gmail.com> Subject: [RFC 06/16] iommu/dma: Implement link/unlink page callbacks Date: Tue, 5 Mar 2024 12:15:16 +0200 [thread overview] Message-ID: <1d3d26afcdbf95b053a3a44ceff34a4fa5334582.1709631413.git.leon@kernel.org> (raw) In-Reply-To: <a77609c9c9a09214e38b04133e44eee67fe50ab0.1709631413.git.leon@kernel.org> From: Leon Romanovsky <leonro@nvidia.com> Add an implementation of link/unlink interface to perform in map/unmap pages in fast patch for pre-allocated IOVA. Signed-off-by: Leon Romanovsky <leonro@nvidia.com> --- drivers/iommu/dma-iommu.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index dbdd373a609a..b683c4a4e9f8 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -1752,6 +1752,21 @@ static void iommu_dma_free_iova(struct device *dev, dma_addr_t iova, __iommu_dma_free_iova(cookie, iova, size, &iotlb_gather); } +static dma_addr_t iommu_dma_link_range(struct device *dev, struct page *page, + unsigned long offset, dma_addr_t iova, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + return __iommu_dma_map_pages(dev, page, offset, iova, size, dir, attrs); +} + +static void iommu_dma_unlink_range(struct device *dev, dma_addr_t addr, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + __iommu_dma_unmap_pages(dev, addr, size, dir, attrs, false); +} + static const struct dma_map_ops iommu_dma_ops = { .flags = DMA_F_PCI_P2PDMA_SUPPORTED, .alloc = iommu_dma_alloc, @@ -1776,6 +1791,8 @@ static const struct dma_map_ops iommu_dma_ops = { .opt_mapping_size = iommu_dma_opt_mapping_size, .alloc_iova = iommu_dma_alloc_iova, .free_iova = iommu_dma_free_iova, + .link_range = iommu_dma_link_range, + .unlink_range = iommu_dma_unlink_range, }; /* -- 2.44.0
WARNING: multiple messages have this Message-ID (diff)
From: Leon Romanovsky <leon@kernel.org> To: Christoph Hellwig <hch@lst.de>, Robin Murphy <robin.murphy@arm.com>, Marek Szyprowski <m.szyprowski@samsung.com>, Joerg Roedel <joro@8bytes.org>, Will Deacon <will@kernel.org>, Jason Gunthorpe <jgg@ziepe.ca>, Chaitanya Kulkarni <chaitanyak@nvidia.com> Cc: "Leon Romanovsky" <leonro@nvidia.com>, "Jonathan Corbet" <corbet@lwn.net>, "Jens Axboe" <axboe@kernel.dk>, "Keith Busch" <kbusch@kernel.org>, "Sagi Grimberg" <sagi@grimberg.me>, "Yishai Hadas" <yishaih@nvidia.com>, "Shameer Kolothum" <shameerali.kolothum.thodi@huawei.com>, "Kevin Tian" <kevin.tian@intel.com>, "Alex Williamson" <alex.williamson@redhat.com>, "Jérôme Glisse" <jglisse@redhat.com>, "Andrew Morton" <akpm@linux-foundation.org>, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-block@vger.kernel.org, linux-rdma@vger.kernel.org, iommu@lists.linux.dev, linux-nvme@lists.infradead.org, kvm@vger.kernel.org, linux-mm@kvack.org, "Bart Van Assche" <bvanassche@acm.org>, "Damien Le Moal" <damien.lemoal@opensource.wdc.com>, "Amir Goldstein" <amir73il@gmail.com>, "josef@toxicpanda.com" <josef@toxicpanda.com>, "Martin K. Petersen" <martin.petersen@oracle.com>, "daniel@iogearbox.net" <daniel@iogearbox.net>, "Dan Williams" <dan.j.williams@intel.com>, "jack@suse.com" <jack@suse.com>, "Zhu Yanjun" <zyjzyj2000@gmail.com> Subject: [RFC 06/16] iommu/dma: Implement link/unlink page callbacks Date: Tue, 5 Mar 2024 12:22:07 +0200 [thread overview] Message-ID: <1d3d26afcdbf95b053a3a44ceff34a4fa5334582.1709631413.git.leon@kernel.org> (raw) Message-ID: <20240305102207.MypqMPxZYKb2ZuRnahXeOB4r4gXAOq7lQOBYKJigl04@z> (raw) In-Reply-To: <cover.1709631800.git.leon@kernel.org> From: Leon Romanovsky <leonro@nvidia.com> Add an implementation of link/unlink interface to perform in map/unmap pages in fast patch for pre-allocated IOVA. Signed-off-by: Leon Romanovsky <leonro@nvidia.com> --- drivers/iommu/dma-iommu.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/iommu/dma-iommu.c b/drivers/iommu/dma-iommu.c index dbdd373a609a..b683c4a4e9f8 100644 --- a/drivers/iommu/dma-iommu.c +++ b/drivers/iommu/dma-iommu.c @@ -1752,6 +1752,21 @@ static void iommu_dma_free_iova(struct device *dev, dma_addr_t iova, __iommu_dma_free_iova(cookie, iova, size, &iotlb_gather); } +static dma_addr_t iommu_dma_link_range(struct device *dev, struct page *page, + unsigned long offset, dma_addr_t iova, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + return __iommu_dma_map_pages(dev, page, offset, iova, size, dir, attrs); +} + +static void iommu_dma_unlink_range(struct device *dev, dma_addr_t addr, + size_t size, enum dma_data_direction dir, + unsigned long attrs) +{ + __iommu_dma_unmap_pages(dev, addr, size, dir, attrs, false); +} + static const struct dma_map_ops iommu_dma_ops = { .flags = DMA_F_PCI_P2PDMA_SUPPORTED, .alloc = iommu_dma_alloc, @@ -1776,6 +1791,8 @@ static const struct dma_map_ops iommu_dma_ops = { .opt_mapping_size = iommu_dma_opt_mapping_size, .alloc_iova = iommu_dma_alloc_iova, .free_iova = iommu_dma_free_iova, + .link_range = iommu_dma_link_range, + .unlink_range = iommu_dma_unlink_range, }; /* -- 2.44.0
next prev parent reply other threads:[~2024-03-05 10:15 UTC|newest] Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top 2024-03-05 10:15 [RFC 00/16] Split IOMMU DMA mapping operation to two steps Leon Romanovsky 2024-03-05 10:15 ` [RFC 01/16] mm/hmm: let users to tag specific PFNs Leon Romanovsky 2024-03-05 10:15 ` [RFC 02/16] dma-mapping: provide an interface to allocate IOVA Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 03/16] dma-mapping: provide callbacks to link/unlink pages to specific IOVA Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 04/16] iommu/dma: Provide an interface to allow preallocate IOVA Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 05/16] iommu/dma: Prepare map/unmap page functions to receive IOVA Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` Leon Romanovsky [this message] 2024-03-05 10:22 ` [RFC 06/16] iommu/dma: Implement link/unlink page callbacks Leon Romanovsky 2024-03-05 10:15 ` [RFC 07/16] RDMA/umem: Preallocate and cache IOVA for UMEM ODP Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 08/16] RDMA/umem: Store ODP access mask information in PFN Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 09/16] RDMA/core: Separate DMA mapping to caching IOVA and page linkage Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 10/16] RDMA/umem: Prevent UMEM ODP creation with SWIOTLB Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 11/16] vfio/mlx5: Explicitly use number of pages instead of allocated length Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 12/16] vfio/mlx5: Rewrite create mkey flow to allow better code reuse Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 13/16] vfio/mlx5: Explicitly store page list Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 14/16] vfio/mlx5: Convert vfio to use DMA link API Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 15/16] block: add dma_link_range() based API Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:15 ` [RFC 16/16] nvme-pci: use blk_rq_dma_map() for NVMe SGL Leon Romanovsky 2024-03-05 10:22 ` Leon Romanovsky 2024-03-05 10:22 ` [RFC 01/16] mm/hmm: let users to tag specific PFNs Leon Romanovsky 2024-03-05 10:22 ` [RFC 00/16] Split IOMMU DMA mapping operation to two steps Leon Romanovsky 2024-03-05 10:23 ` Leon Romanovsky
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=1d3d26afcdbf95b053a3a44ceff34a4fa5334582.1709631413.git.leon@kernel.org \ --to=leon@kernel.org \ --cc=akpm@linux-foundation.org \ --cc=alex.williamson@redhat.com \ --cc=amir73il@gmail.com \ --cc=axboe@kernel.dk \ --cc=bvanassche@acm.org \ --cc=chaitanyak@nvidia.com \ --cc=corbet@lwn.net \ --cc=damien.lemoal@opensource.wdc.com \ --cc=dan.j.williams@intel.com \ --cc=daniel@iogearbox.net \ --cc=hch@lst.de \ --cc=iommu@lists.linux.dev \ --cc=jack@suse.com \ --cc=jgg@ziepe.ca \ --cc=jglisse@redhat.com \ --cc=joro@8bytes.org \ --cc=josef@toxicpanda.com \ --cc=kbusch@kernel.org \ --cc=kevin.tian@intel.com \ --cc=kvm@vger.kernel.org \ --cc=leonro@nvidia.com \ --cc=linux-block@vger.kernel.org \ --cc=linux-doc@vger.kernel.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux-mm@kvack.org \ --cc=linux-nvme@lists.infradead.org \ --cc=linux-rdma@vger.kernel.org \ --cc=m.szyprowski@samsung.com \ --cc=martin.petersen@oracle.com \ --cc=robin.murphy@arm.com \ --cc=sagi@grimberg.me \ --cc=shameerali.kolothum.thodi@huawei.com \ --cc=will@kernel.org \ --cc=yishaih@nvidia.com \ --cc=zyjzyj2000@gmail.com \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions for how to clone and mirror all data and code used for this inbox; as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).