diff options
Diffstat (limited to 'drivers/vdpa/vdpa_user/iova_domain.h')
| -rw-r--r-- | drivers/vdpa/vdpa_user/iova_domain.h | 16 |
1 files changed, 14 insertions, 2 deletions
diff --git a/drivers/vdpa/vdpa_user/iova_domain.h b/drivers/vdpa/vdpa_user/iova_domain.h index 173e979b84a9..a923971a64f5 100644 --- a/drivers/vdpa/vdpa_user/iova_domain.h +++ b/drivers/vdpa/vdpa_user/iova_domain.h @@ -17,10 +17,14 @@ #define IOVA_START_PFN 1 -#define INVALID_PHYS_ADDR (~(phys_addr_t)0) +#define BOUNCE_MAP_SHIFT 12 +#define BOUNCE_MAP_SIZE (1 << BOUNCE_MAP_SHIFT) +#define BOUNCE_MAP_MASK (~(BOUNCE_MAP_SIZE - 1)) +#define BOUNCE_MAP_ALIGN(addr) (((addr) + BOUNCE_MAP_SIZE - 1) & ~(BOUNCE_MAP_SIZE - 1)) struct vduse_bounce_map { struct page *bounce_page; + struct page *user_bounce_page; u64 orig_phys; }; @@ -44,6 +48,14 @@ int vduse_domain_set_map(struct vduse_iova_domain *domain, void vduse_domain_clear_map(struct vduse_iova_domain *domain, struct vhost_iotlb *iotlb); +void vduse_domain_sync_single_for_device(struct vduse_iova_domain *domain, + dma_addr_t dma_addr, size_t size, + enum dma_data_direction dir); + +void vduse_domain_sync_single_for_cpu(struct vduse_iova_domain *domain, + dma_addr_t dma_addr, size_t size, + enum dma_data_direction dir); + dma_addr_t vduse_domain_map_page(struct vduse_iova_domain *domain, struct page *page, unsigned long offset, size_t size, enum dma_data_direction dir, @@ -55,7 +67,7 @@ void vduse_domain_unmap_page(struct vduse_iova_domain *domain, void *vduse_domain_alloc_coherent(struct vduse_iova_domain *domain, size_t size, dma_addr_t *dma_addr, - gfp_t flag, unsigned long attrs); + gfp_t flag); void vduse_domain_free_coherent(struct vduse_iova_domain *domain, size_t size, void *vaddr, dma_addr_t dma_addr, |