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| author |   Logan Gunthorpe <logang@deltatee.com> | 2019-08-12 11:30:42 -0600 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2019-08-16 08:41:15 -0500 |
| commit | 2b9f4bb2a4fb77da4862f9ddf5209de2bcdaa0c0 (patch) | |
| tree | fa5ea414b73d49f329c5c7d4bb153d29c9a0c0ed /include/linux/pci-p2pdma.h | |
| parent | PCI/P2PDMA: Whitelist some Intel host bridges (diff) | |
| download | linux-dev-2b9f4bb2a4fb77da4862f9ddf5209de2bcdaa0c0.tar.xz linux-dev-2b9f4bb2a4fb77da4862f9ddf5209de2bcdaa0c0.zip | |
PCI/P2PDMA: Add attrs argument to pci_p2pdma_map_sg()
This is to match the dma_map_sg() API which this function will have to call
in an future patch.
Add a pci_p2pdma_map_sg_attrs() function and helper to call it with no
attributes just like the dma_map_sg() function.
Link: https://lore.kernel.org/r/20190730163545.4915-9-logang@deltatee.com
Link: https://lore.kernel.org/r/20190812173048.9186-9-logang@deltatee.com
Signed-off-by: Logan Gunthorpe <logang@deltatee.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'include/linux/pci-p2pdma.h')
| -rw-r--r-- | include/linux/pci-p2pdma.h | 15 |
1 files changed, 11 insertions, 4 deletions
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 */ |