From: "Christian König" <ckoenig.leichtzumerken@gmail.com> To: linaro-mm-sig@lists.linaro.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, amd-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org Subject: [PATCH 1/8] lib/scatterlist: add sg_set_dma_addr() helper Date: Sun, 25 Mar 2018 12:59:53 +0200 [thread overview] Message-ID: <20180325110000.2238-1-christian.koenig@amd.com> (raw) Use this function to set an sg entry to point to device resources mapped using dma_map_resource(). The page pointer is set to NULL and only the DMA address, length and offset values are valid. Signed-off-by: Christian König <christian.koenig@amd.com> --- include/linux/scatterlist.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 22b2131bcdcd..f944ee4e482c 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -149,6 +149,29 @@ static inline void sg_set_buf(struct scatterlist *sg, const void *buf, sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf)); } +/** + * sg_set_dma_addr - Set sg entry to point at specified dma address + * @sg: SG entry + * @address: DMA address to set + * @len: Length of data + * @offset: Offset into page + * + * Description: + * Use this function to set an sg entry to point to device resources mapped + * using dma_map_resource(). The page pointer is set to NULL and only the DMA + * address, length and offset values are valid. + * + **/ +static inline void sg_set_dma_addr(struct scatterlist *sg, dma_addr_t address, + unsigned int len, unsigned int offset) +{ + sg_set_page(sg, NULL, len, offset); + sg->dma_address = address; +#ifdef CONFIG_NEED_SG_DMA_LENGTH + sg->dma_length = len; +#endif +} + /* * Loop over each sg element, following the pointer to a new list if necessary */ -- 2.14.1
WARNING: multiple messages have this Message-ID (diff)
From: "Christian König" <ckoenig.leichtzumerken-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> To: linaro-mm-sig-cunTk1MwBs8s++Sfvej+rw@public.gmane.org, linux-media-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, amd-gfx-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Subject: [PATCH 1/8] lib/scatterlist: add sg_set_dma_addr() helper Date: Sun, 25 Mar 2018 12:59:53 +0200 [thread overview] Message-ID: <20180325110000.2238-1-christian.koenig@amd.com> (raw) Use this function to set an sg entry to point to device resources mapped using dma_map_resource(). The page pointer is set to NULL and only the DMA address, length and offset values are valid. Signed-off-by: Christian König <christian.koenig@amd.com> --- include/linux/scatterlist.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) diff --git a/include/linux/scatterlist.h b/include/linux/scatterlist.h index 22b2131bcdcd..f944ee4e482c 100644 --- a/include/linux/scatterlist.h +++ b/include/linux/scatterlist.h @@ -149,6 +149,29 @@ static inline void sg_set_buf(struct scatterlist *sg, const void *buf, sg_set_page(sg, virt_to_page(buf), buflen, offset_in_page(buf)); } +/** + * sg_set_dma_addr - Set sg entry to point at specified dma address + * @sg: SG entry + * @address: DMA address to set + * @len: Length of data + * @offset: Offset into page + * + * Description: + * Use this function to set an sg entry to point to device resources mapped + * using dma_map_resource(). The page pointer is set to NULL and only the DMA + * address, length and offset values are valid. + * + **/ +static inline void sg_set_dma_addr(struct scatterlist *sg, dma_addr_t address, + unsigned int len, unsigned int offset) +{ + sg_set_page(sg, NULL, len, offset); + sg->dma_address = address; +#ifdef CONFIG_NEED_SG_DMA_LENGTH + sg->dma_length = len; +#endif +} + /* * Loop over each sg element, following the pointer to a new list if necessary */ -- 2.14.1 _______________________________________________ amd-gfx mailing list amd-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/amd-gfx
next reply other threads:[~2018-03-25 11:00 UTC|newest] Thread overview: 161+ messages / expand[flat|nested] mbox.gz Atom feed top 2018-03-25 10:59 Christian König [this message] 2018-03-25 10:59 ` [PATCH 1/8] lib/scatterlist: add sg_set_dma_addr() helper Christian König 2018-03-25 10:59 ` [PATCH 2/8] PCI: Add pci_find_common_upstream_dev() Christian König 2018-03-25 10:59 ` Christian König 2018-03-28 12:38 ` Christoph Hellwig 2018-03-28 15:07 ` Christian König 2018-03-28 15:07 ` Christian König 2018-03-28 15:47 ` Logan Gunthorpe 2018-03-28 16:02 ` Christian König 2018-03-28 16:02 ` Christian König 2018-03-28 16:25 ` Logan Gunthorpe 2018-03-28 18:28 ` Christian König 2018-03-28 18:28 ` Christian König 2018-03-28 18:57 ` Logan Gunthorpe 2018-03-28 19:44 ` Christian König 2018-03-28 19:44 ` Christian König 2018-03-28 19:53 ` Logan Gunthorpe 2018-03-29 11:44 ` Christian König 2018-03-29 15:45 ` Logan Gunthorpe 2018-03-29 16:10 ` Christian König 2018-03-29 16:10 ` Christian König 2018-03-29 16:25 ` Logan Gunthorpe 2018-03-29 18:15 ` Christian König 2018-03-29 18:15 ` Christian König 2018-03-30 1:58 ` Jerome Glisse 2018-03-30 1:58 ` Jerome Glisse 2018-03-30 6:33 ` Christoph Hellwig 2018-03-30 6:33 ` Christoph Hellwig 2018-03-30 15:25 ` Jerome Glisse 2018-03-30 18:46 ` Logan Gunthorpe 2018-03-30 19:45 ` Jerome Glisse 2018-03-30 19:45 ` Jerome Glisse 2018-04-02 17:02 ` Logan Gunthorpe 2018-04-02 17:20 ` Jerome Glisse 2018-04-02 17:20 ` Jerome Glisse 2018-04-02 17:37 ` Logan Gunthorpe 2018-04-02 19:16 ` Jerome Glisse 2018-04-02 19:16 ` Jerome Glisse 2018-04-02 19:32 ` Logan Gunthorpe 2018-04-02 19:45 ` Jerome Glisse 2018-04-02 19:45 ` Jerome Glisse [not found] ` <CADnq5_P-z=Noos_jaME9_CERri3C-m2hPPvx2bArr36O=1FnrA@mail.gmail.com> 2018-03-29 14:37 ` Alex Deucher 2018-03-29 14:37 ` Alex Deucher 2018-03-25 10:59 ` [PATCH 3/8] PCI: Add pci_peer_traffic_supported() Christian König 2018-03-25 10:59 ` Christian König 2018-03-25 10:59 ` [PATCH 4/8] dma-buf: add peer2peer flag Christian König 2018-03-25 10:59 ` Christian König 2018-03-29 6:57 ` Daniel Vetter 2018-03-29 6:57 ` Daniel Vetter 2018-03-29 11:34 ` Christian König 2018-03-29 11:34 ` Christian König 2018-04-03 9:09 ` Daniel Vetter 2018-04-03 9:09 ` Daniel Vetter 2018-04-03 17:06 ` Jerome Glisse 2018-04-03 17:06 ` Jerome Glisse 2018-04-03 18:08 ` Daniel Vetter 2018-04-03 18:08 ` Daniel Vetter 2018-04-16 12:39 ` Christoph Hellwig 2018-04-16 12:39 ` Christoph Hellwig 2018-04-16 13:38 ` Daniel Vetter 2018-04-16 13:38 ` Daniel Vetter 2018-04-19 8:16 ` Christoph Hellwig 2018-04-19 8:16 ` Christoph Hellwig 2018-04-20 7:13 ` Daniel Vetter 2018-04-20 7:13 ` Daniel Vetter 2018-04-20 8:58 ` Christian König 2018-04-20 8:58 ` Christian König 2018-04-20 10:17 ` Christoph Hellwig 2018-04-20 10:17 ` Christoph Hellwig 2018-04-20 10:44 ` Christian König 2018-04-20 10:44 ` Christian König 2018-04-20 12:46 ` Christoph Hellwig 2018-04-20 15:21 ` [Linaro-mm-sig] " Daniel Vetter 2018-04-24 18:48 ` Christoph Hellwig 2018-04-24 18:48 ` Christoph Hellwig 2018-04-24 19:32 ` Daniel Vetter 2018-04-24 19:32 ` Daniel Vetter 2018-04-25 5:48 ` Christoph Hellwig 2018-04-25 5:48 ` Christoph Hellwig 2018-04-25 6:10 ` Alex Deucher 2018-04-25 6:10 ` Alex Deucher 2018-04-25 6:13 ` Daniel Vetter 2018-04-25 6:13 ` Daniel Vetter 2018-04-25 6:23 ` Daniel Vetter 2018-04-25 6:23 ` Daniel Vetter 2018-04-25 6:43 ` Christoph Hellwig 2018-04-25 6:43 ` Christoph Hellwig 2018-04-25 7:02 ` Daniel Vetter 2018-04-25 7:02 ` Daniel Vetter 2018-04-25 7:09 ` Christoph Hellwig 2018-04-25 7:09 ` Christoph Hellwig 2018-04-25 7:30 ` Daniel Vetter 2018-04-25 7:30 ` Daniel Vetter 2018-04-25 7:56 ` Thierry Reding 2018-04-25 7:56 ` Thierry Reding 2018-04-25 8:55 ` Christoph Hellwig 2018-04-25 8:55 ` Christoph Hellwig 2018-04-25 7:43 ` Thierry Reding 2018-04-25 7:43 ` Thierry Reding 2018-04-25 7:41 ` Thierry Reding 2018-04-25 7:41 ` Thierry Reding 2018-04-25 8:54 ` noveau vs arm dma ops Christoph Hellwig 2018-04-25 8:54 ` Christoph Hellwig 2018-04-25 8:54 ` Christoph Hellwig 2018-04-25 9:25 ` Russell King - ARM Linux 2018-04-25 9:25 ` Russell King - ARM Linux 2018-04-25 10:04 ` Daniel Vetter 2018-04-25 10:04 ` Daniel Vetter 2018-04-25 10:04 ` Daniel Vetter 2018-04-25 15:33 ` Christoph Hellwig 2018-04-25 15:33 ` Christoph Hellwig 2018-04-25 15:33 ` Christoph Hellwig 2018-04-25 21:35 ` Daniel Vetter 2018-04-25 21:35 ` Daniel Vetter 2018-04-25 21:35 ` Daniel Vetter 2018-04-25 23:26 ` Russell King - ARM Linux 2018-04-25 23:26 ` Russell King - ARM Linux 2018-04-26 9:17 ` Daniel Vetter 2018-04-26 9:17 ` Daniel Vetter 2018-04-26 9:17 ` Daniel Vetter 2018-04-26 9:09 ` Christoph Hellwig 2018-04-26 9:09 ` Christoph Hellwig 2018-04-26 9:09 ` Christoph Hellwig 2018-04-26 9:45 ` Daniel Vetter 2018-04-26 9:45 ` Daniel Vetter 2018-04-26 9:45 ` Daniel Vetter 2018-04-26 11:12 ` Russell King - ARM Linux 2018-04-26 11:12 ` Russell King - ARM Linux 2018-04-25 22:54 ` Russell King - ARM Linux 2018-04-25 22:54 ` Russell King - ARM Linux 2018-04-26 9:13 ` Christoph Hellwig 2018-04-26 9:13 ` Christoph Hellwig 2018-04-26 9:13 ` Christoph Hellwig 2018-04-26 9:20 ` [Linaro-mm-sig] " Daniel Vetter 2018-04-26 9:20 ` Daniel Vetter 2018-04-26 9:20 ` Daniel Vetter 2018-04-26 9:24 ` Christoph Hellwig 2018-04-26 9:24 ` Christoph Hellwig 2018-04-26 9:24 ` Christoph Hellwig 2018-04-26 9:39 ` Daniel Vetter 2018-04-26 9:39 ` Daniel Vetter 2018-04-26 9:39 ` Daniel Vetter 2018-04-25 6:24 ` [Linaro-mm-sig] [PATCH 4/8] dma-buf: add peer2peer flag Alex Deucher 2018-04-25 6:24 ` Alex Deucher 2018-04-25 6:41 ` Christoph Hellwig 2018-04-25 6:41 ` Christoph Hellwig 2018-04-25 17:44 ` Alex Deucher 2018-04-25 17:44 ` Alex Deucher 2018-04-25 18:38 ` Dan Williams 2018-04-25 18:38 ` Dan Williams 2018-05-04 12:45 ` Lucas Stach 2018-03-25 10:59 ` [PATCH 5/8] drm/amdgpu: print DMA-buf status in debugfs Christian König 2018-03-25 10:59 ` Christian König 2018-03-25 10:59 ` [PATCH 6/8] drm/amdgpu: note that we can handle peer2peer DMA-buf Christian König 2018-03-25 10:59 ` Christian König 2018-03-25 10:59 ` [PATCH 7/8] drm/amdgpu: add amdgpu_gem_attach Christian König 2018-03-25 10:59 ` Christian König 2018-03-25 11:00 ` [PATCH 8/8] drm/amdgpu: add support for exporting VRAM using DMA-buf Christian König 2018-03-25 11:00 ` Christian König 2018-03-28 12:37 ` [PATCH 1/8] lib/scatterlist: add sg_set_dma_addr() helper Christoph Hellwig 2018-03-28 12:37 ` Christoph Hellwig
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