Use generic names for the quirks to make it clear it is not just about the IOMMU, it's about DMA access in general.
changes from v1: added patch 2
Michael S. Tsirkin (2): virtio: VIRTIO_F_IOMMU_PLATFORM -> VIRTIO_F_ACCESS_PLATFORM virtio: virtio_has_iommu_quirk -> virtio_has_dma_quirk
arch/um/drivers/virtio_uml.c | 2 +- drivers/gpu/drm/virtio/virtgpu_object.c | 2 +- drivers/gpu/drm/virtio/virtgpu_vq.c | 4 ++-- drivers/vdpa/ifcvf/ifcvf_base.h | 2 +- drivers/vdpa/vdpa_sim/vdpa_sim.c | 4 ++-- drivers/vhost/net.c | 4 ++-- drivers/vhost/vdpa.c | 2 +- drivers/virtio/virtio_balloon.c | 2 +- drivers/virtio/virtio_ring.c | 4 ++-- include/linux/virtio_config.h | 6 +++--- include/uapi/linux/virtio_config.h | 10 +++++++--- tools/virtio/linux/virtio_config.h | 6 +++--- 12 files changed, 26 insertions(+), 22 deletions(-)
Now that the corresponding feature bit has been renamed, rename the quirk too - it's about special ways to do DMA, not necessarily about the IOMMU.
Signed-off-by: Michael S. Tsirkin mst@redhat.com --- drivers/gpu/drm/virtio/virtgpu_object.c | 2 +- drivers/gpu/drm/virtio/virtgpu_vq.c | 4 ++-- drivers/virtio/virtio_ring.c | 2 +- include/linux/virtio_config.h | 4 ++-- tools/virtio/linux/virtio_config.h | 4 ++-- 5 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index 6ccbd01cd888..e8799ab0c753 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -141,7 +141,7 @@ static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev, struct virtio_gpu_mem_entry **ents, unsigned int *nents) { - bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev); + bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo); struct scatterlist *sg; int si, ret; diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index 9e663a5d9952..53af60d484a4 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -599,7 +599,7 @@ void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); struct virtio_gpu_transfer_to_host_2d *cmd_p; struct virtio_gpu_vbuffer *vbuf; - bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev); + bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo);
if (use_dma_api) @@ -1015,7 +1015,7 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); struct virtio_gpu_transfer_host_3d *cmd_p; struct virtio_gpu_vbuffer *vbuf; - bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev); + bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo);
if (use_dma_api) diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index a1a5c2a91426..34253cb69cb8 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -240,7 +240,7 @@ static inline bool virtqueue_use_indirect(struct virtqueue *_vq,
static bool vring_use_dma_api(struct virtio_device *vdev) { - if (!virtio_has_iommu_quirk(vdev)) + if (!virtio_has_dma_quirk(vdev)) return true;
/* Otherwise, we are left to guess. */ diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index f2cc2a0df174..3b4eae5ac5e3 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -162,10 +162,10 @@ static inline bool virtio_has_feature(const struct virtio_device *vdev, }
/** - * virtio_has_iommu_quirk - determine whether this device has the iommu quirk + * virtio_has_dma_quirk - determine whether this device has the DMA quirk * @vdev: the device */ -static inline bool virtio_has_iommu_quirk(const struct virtio_device *vdev) +static inline bool virtio_has_dma_quirk(const struct virtio_device *vdev) { /* * Note the reverse polarity of the quirk feature (compared to most diff --git a/tools/virtio/linux/virtio_config.h b/tools/virtio/linux/virtio_config.h index f99ae42668e0..f2640e505c4e 100644 --- a/tools/virtio/linux/virtio_config.h +++ b/tools/virtio/linux/virtio_config.h @@ -42,10 +42,10 @@ static inline void __virtio_clear_bit(struct virtio_device *vdev, (__virtio_test_bit((dev), feature))
/** - * virtio_has_iommu_quirk - determine whether this device has the iommu quirk + * virtio_has_dma_quirk - determine whether this device has the DMA quirk * @vdev: the device */ -static inline bool virtio_has_iommu_quirk(const struct virtio_device *vdev) +static inline bool virtio_has_dma_quirk(const struct virtio_device *vdev) { /* * Note the reverse polarity of the quirk feature (compared to most
On 2020/6/25 上午7:21, Michael S. Tsirkin wrote:
Now that the corresponding feature bit has been renamed, rename the quirk too - it's about special ways to do DMA, not necessarily about the IOMMU.
Signed-off-by: Michael S. Tsirkin mst@redhat.com
drivers/gpu/drm/virtio/virtgpu_object.c | 2 +- drivers/gpu/drm/virtio/virtgpu_vq.c | 4 ++-- drivers/virtio/virtio_ring.c | 2 +- include/linux/virtio_config.h | 4 ++-- tools/virtio/linux/virtio_config.h | 4 ++-- 5 files changed, 8 insertions(+), 8 deletions(-)
diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index 6ccbd01cd888..e8799ab0c753 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -141,7 +141,7 @@ static int virtio_gpu_object_shmem_init(struct virtio_gpu_device *vgdev, struct virtio_gpu_mem_entry **ents, unsigned int *nents) {
- bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
- bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo); struct scatterlist *sg; int si, ret;
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index 9e663a5d9952..53af60d484a4 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -599,7 +599,7 @@ void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); struct virtio_gpu_transfer_to_host_2d *cmd_p; struct virtio_gpu_vbuffer *vbuf;
- bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo);
if (use_dma_api)
@@ -1015,7 +1015,7 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo = gem_to_virtio_gpu_obj(objs->objs[0]); struct virtio_gpu_transfer_host_3d *cmd_p; struct virtio_gpu_vbuffer *vbuf;
- bool use_dma_api = !virtio_has_iommu_quirk(vgdev->vdev);
bool use_dma_api = !virtio_has_dma_quirk(vgdev->vdev); struct virtio_gpu_object_shmem *shmem = to_virtio_gpu_shmem(bo);
if (use_dma_api)
diff --git a/drivers/virtio/virtio_ring.c b/drivers/virtio/virtio_ring.c index a1a5c2a91426..34253cb69cb8 100644 --- a/drivers/virtio/virtio_ring.c +++ b/drivers/virtio/virtio_ring.c @@ -240,7 +240,7 @@ static inline bool virtqueue_use_indirect(struct virtqueue *_vq,
static bool vring_use_dma_api(struct virtio_device *vdev) {
- if (!virtio_has_iommu_quirk(vdev))
if (!virtio_has_dma_quirk(vdev)) return true;
/* Otherwise, we are left to guess. */
diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h index f2cc2a0df174..3b4eae5ac5e3 100644 --- a/include/linux/virtio_config.h +++ b/include/linux/virtio_config.h @@ -162,10 +162,10 @@ static inline bool virtio_has_feature(const struct virtio_device *vdev, }
/**
- virtio_has_iommu_quirk - determine whether this device has the iommu quirk
*/
- virtio_has_dma_quirk - determine whether this device has the DMA quirk
- @vdev: the device
-static inline bool virtio_has_iommu_quirk(const struct virtio_device *vdev) +static inline bool virtio_has_dma_quirk(const struct virtio_device *vdev) { /* * Note the reverse polarity of the quirk feature (compared to most diff --git a/tools/virtio/linux/virtio_config.h b/tools/virtio/linux/virtio_config.h index f99ae42668e0..f2640e505c4e 100644 --- a/tools/virtio/linux/virtio_config.h +++ b/tools/virtio/linux/virtio_config.h @@ -42,10 +42,10 @@ static inline void __virtio_clear_bit(struct virtio_device *vdev, (__virtio_test_bit((dev), feature))
/**
- virtio_has_iommu_quirk - determine whether this device has the iommu quirk
*/
- virtio_has_dma_quirk - determine whether this device has the DMA quirk
- @vdev: the device
-static inline bool virtio_has_iommu_quirk(const struct virtio_device *vdev) +static inline bool virtio_has_dma_quirk(const struct virtio_device *vdev) { /* * Note the reverse polarity of the quirk feature (compared to most
Acked-by: Jason Wang jasowang@redhat.com
dri-devel@lists.freedesktop.org
-
Jason Wang -
Michael S. Tsirkin