vfio: Refactor dma APIs for emulated devices
To use group helpers instead of opening group related code in the
API. This prepares moving group specific code out of vfio_main.c.
Link: https://lore.kernel.org/r/20221201145535.589687-10-yi.l.liu@intel.com
Reviewed-by: Kevin Tian <kevin.tian@intel.com>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Lixiao Yang <lixiao.yang@intel.com>
Tested-by: Yu He <yu.he@intel.com>
Signed-off-by: Yi Liu <yi.l.liu@intel.com>
Signed-off-by: Nicolin Chen <nicolinc@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
diff --git a/drivers/vfio/container.c b/drivers/vfio/container.c
index 6b362d9..b7a9560 100644
--- a/drivers/vfio/container.c
+++ b/drivers/vfio/container.c
@@ -540,10 +540,12 @@ void vfio_group_unuse_container(struct vfio_group *group)
fput(group->opened_file);
}
-int vfio_container_pin_pages(struct vfio_container *container,
- struct iommu_group *iommu_group, dma_addr_t iova,
- int npage, int prot, struct page **pages)
+int vfio_device_container_pin_pages(struct vfio_device *device,
+ dma_addr_t iova, int npage,
+ int prot, struct page **pages)
{
+ struct vfio_container *container = device->group->container;
+ struct iommu_group *iommu_group = device->group->iommu_group;
struct vfio_iommu_driver *driver = container->iommu_driver;
if (npage > VFIO_PIN_PAGES_MAX_ENTRIES)
@@ -555,9 +557,11 @@ int vfio_container_pin_pages(struct vfio_container *container,
npage, prot, pages);
}
-void vfio_container_unpin_pages(struct vfio_container *container,
- dma_addr_t iova, int npage)
+void vfio_device_container_unpin_pages(struct vfio_device *device,
+ dma_addr_t iova, int npage)
{
+ struct vfio_container *container = device->group->container;
+
if (WARN_ON(npage <= 0 || npage > VFIO_PIN_PAGES_MAX_ENTRIES))
return;
@@ -565,9 +569,11 @@ void vfio_container_unpin_pages(struct vfio_container *container,
npage);
}
-int vfio_container_dma_rw(struct vfio_container *container, dma_addr_t iova,
- void *data, size_t len, bool write)
+int vfio_device_container_dma_rw(struct vfio_device *device,
+ dma_addr_t iova, void *data,
+ size_t len, bool write)
{
+ struct vfio_container *container = device->group->container;
struct vfio_iommu_driver *driver = container->iommu_driver;
if (unlikely(!driver || !driver->ops->dma_rw))
