diff options
Diffstat (limited to 'include/linux/dma-iommu.h')
| -rw-r--r-- | include/linux/dma-iommu.h | 24 |
1 files changed, 22 insertions, 2 deletions
diff --git a/include/linux/dma-iommu.h b/include/linux/dma-iommu.h index e760dc5d1fa8..476e0c54de2d 100644 --- a/include/linux/dma-iommu.h +++ b/include/linux/dma-iommu.h @@ -71,12 +71,25 @@ void iommu_dma_unmap_resource(struct device *dev, dma_addr_t handle, size_t size, enum dma_data_direction dir, unsigned long attrs); /* The DMA API isn't _quite_ the whole story, though... */ -void iommu_dma_map_msi_msg(int irq, struct msi_msg *msg); +/* + * iommu_dma_prepare_msi() - Map the MSI page in the IOMMU device + * + * The MSI page will be stored in @desc. + * + * Return: 0 on success otherwise an error describing the failure. + */ +int iommu_dma_prepare_msi(struct msi_desc *desc, phys_addr_t msi_addr); + +/* Update the MSI message if required. */ +void iommu_dma_compose_msi_msg(struct msi_desc *desc, + struct msi_msg *msg); + void iommu_dma_get_resv_regions(struct device *dev, struct list_head *list); #else struct iommu_domain; +struct msi_desc; struct msi_msg; struct device; @@ -99,7 +112,14 @@ static inline void iommu_put_dma_cookie(struct iommu_domain *domain) { } -static inline void iommu_dma_map_msi_msg(int irq, struct msi_msg *msg) +static inline int iommu_dma_prepare_msi(struct msi_desc *desc, + phys_addr_t msi_addr) +{ + return 0; +} + +static inline void iommu_dma_compose_msi_msg(struct msi_desc *desc, + struct msi_msg *msg) { } |