[PATCH v8 11/18] drm/virtio: rework virtio_gpu_transfer_to_host_ioctl fencing

From: Gerd Hoffmann
Date: Fri Aug 23 2019 - 05:55:29 EST

Switch to the virtio_gpu_array_* helper workflow.

Signed-off-by: Gerd Hoffmann <kraxel@xxxxxxxxxx>
---
drivers/gpu/drm/virtio/virtgpu_drv.h | 4 +--
drivers/gpu/drm/virtio/virtgpu_ioctl.c | 50 +++++++++++---------------
drivers/gpu/drm/virtio/virtgpu_plane.c | 21 ++++++++---
drivers/gpu/drm/virtio/virtgpu_vq.c | 9 +++--
4 files changed, 47 insertions(+), 37 deletions(-)

diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h
index fa568cbfdddc..4f54bf7c02af 100644
--- a/drivers/gpu/drm/virtio/virtgpu_drv.h
+++ b/drivers/gpu/drm/virtio/virtgpu_drv.h
@@ -279,10 +279,10 @@ void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev,
void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev,
uint32_t resource_id);
void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
- struct virtio_gpu_object *bo,
uint64_t offset,
__le32 width, __le32 height,
__le32 x, __le32 y,
+ struct virtio_gpu_object_array *objs,
struct virtio_gpu_fence *fence);
void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
uint32_t resource_id,
@@ -329,10 +329,10 @@ void virtio_gpu_cmd_transfer_from_host_3d(struct virtio_gpu_device *vgdev,
struct virtio_gpu_object_array *objs,
struct virtio_gpu_fence *fence);
void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
- struct virtio_gpu_object *bo,
uint32_t ctx_id,
uint64_t offset, uint32_t level,
struct virtio_gpu_box *box,
+ struct virtio_gpu_object_array *objs,
struct virtio_gpu_fence *fence);
void
virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
diff --git a/drivers/gpu/drm/virtio/virtgpu_ioctl.c b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
index 444696f73e96..cffde4760468 100644
--- a/drivers/gpu/drm/virtio/virtgpu_ioctl.c
+++ b/drivers/gpu/drm/virtio/virtgpu_ioctl.c
@@ -383,52 +383,44 @@ static int virtio_gpu_transfer_to_host_ioctl(struct drm_device *dev, void *data,
struct virtio_gpu_device *vgdev = dev->dev_private;
struct virtio_gpu_fpriv *vfpriv = file->driver_priv;
struct drm_virtgpu_3d_transfer_to_host *args = data;
- struct ttm_operation_ctx ctx = { true, false };
- struct drm_gem_object *gobj = NULL;
- struct virtio_gpu_object *qobj = NULL;
+ struct virtio_gpu_object_array *objs;
struct virtio_gpu_fence *fence;
struct virtio_gpu_box box;
int ret;
u32 offset = args->offset;

- gobj = drm_gem_object_lookup(file, args->bo_handle);
- if (gobj == NULL)
+ objs = virtio_gpu_array_from_handles(file, &args->bo_handle, 1);
+ if (objs == NULL)
return -ENOENT;

- qobj = gem_to_virtio_gpu_obj(gobj);
-
- ret = virtio_gpu_object_reserve(qobj);
- if (ret)
- goto out;
-
- ret = ttm_bo_validate(&qobj->tbo, &qobj->placement, &ctx);
- if (unlikely(ret))
- goto out_unres;
-
convert_to_hw_box(&box, &args->box);
if (!vgdev->has_virgl_3d) {
virtio_gpu_cmd_transfer_to_host_2d
- (vgdev, qobj, offset,
- box.w, box.h, box.x, box.y, NULL);
+ (vgdev, offset,
+ box.w, box.h, box.x, box.y,
+ objs, NULL);
} else {
+ ret = virtio_gpu_array_lock_resv(objs);
+ if (ret != 0)
+ goto err_put_free;
+
+ ret = -ENOMEM;
fence = virtio_gpu_fence_alloc(vgdev);
- if (!fence) {
- ret = -ENOMEM;
- goto out_unres;
- }
+ if (!fence)
+ goto err_unlock;
+
virtio_gpu_cmd_transfer_to_host_3d
- (vgdev, qobj,
+ (vgdev,
vfpriv ? vfpriv->ctx_id : 0, offset,
- args->level, &box, fence);
- dma_resv_add_excl_fence(qobj->tbo.base.resv,
- &fence->f);
+ args->level, &box, objs, fence);
dma_fence_put(&fence->f);
}
+ return 0;

-out_unres:
- virtio_gpu_object_unreserve(qobj);
-out:
- drm_gem_object_put_unlocked(gobj);
+err_unlock:
+ virtio_gpu_array_unlock_resv(objs);
+err_put_free:
+ virtio_gpu_array_put_free(objs);
return ret;
}

diff --git a/drivers/gpu/drm/virtio/virtgpu_plane.c b/drivers/gpu/drm/virtio/virtgpu_plane.c
index 11539b66c6f2..80c51b098a51 100644
--- a/drivers/gpu/drm/virtio/virtgpu_plane.c
+++ b/drivers/gpu/drm/virtio/virtgpu_plane.c
@@ -109,12 +109,19 @@ static void virtio_gpu_primary_plane_update(struct drm_plane *plane,
bo = gem_to_virtio_gpu_obj(vgfb->base.obj[0]);
handle = bo->hw_res_handle;
if (bo->dumb) {
+ struct virtio_gpu_object_array *objs;
+
+ objs = virtio_gpu_array_alloc(1);
+ if (!objs)
+ return;
+ virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
virtio_gpu_cmd_transfer_to_host_2d
- (vgdev, bo, 0,
+ (vgdev, 0,
cpu_to_le32(plane->state->src_w >> 16),
cpu_to_le32(plane->state->src_h >> 16),
cpu_to_le32(plane->state->src_x >> 16),
- cpu_to_le32(plane->state->src_y >> 16), NULL);
+ cpu_to_le32(plane->state->src_y >> 16),
+ objs, NULL);
}
} else {
handle = 0;
@@ -204,11 +211,17 @@ static void virtio_gpu_cursor_plane_update(struct drm_plane *plane,

if (bo && bo->dumb && (plane->state->fb != old_state->fb)) {
/* new cursor -- update & wait */
+ struct virtio_gpu_object_array *objs;
+
+ objs = virtio_gpu_array_alloc(1);
+ if (!objs)
+ return;
+ virtio_gpu_array_add_obj(objs, vgfb->base.obj[0]);
virtio_gpu_cmd_transfer_to_host_2d
- (vgdev, bo, 0,
+ (vgdev, 0,
cpu_to_le32(plane->state->crtc_w),
cpu_to_le32(plane->state->crtc_h),
- 0, 0, vgfb->fence);
+ 0, 0, objs, vgfb->fence);
dma_fence_wait(&vgfb->fence->f, true);
dma_fence_put(&vgfb->fence->f);
vgfb->fence = NULL;
diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c
index 59d32787944d..e8f5670aadf2 100644
--- a/drivers/gpu/drm/virtio/virtgpu_vq.c
+++ b/drivers/gpu/drm/virtio/virtgpu_vq.c
@@ -491,12 +491,13 @@ void virtio_gpu_cmd_resource_flush(struct virtio_gpu_device *vgdev,
}

void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,
- struct virtio_gpu_object *bo,
uint64_t offset,
__le32 width, __le32 height,
__le32 x, __le32 y,
+ struct virtio_gpu_object_array *objs,
struct virtio_gpu_fence *fence)
{
+ 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);
@@ -508,6 +509,7 @@ void virtio_gpu_cmd_transfer_to_host_2d(struct virtio_gpu_device *vgdev,

cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
memset(cmd_p, 0, sizeof(*cmd_p));
+ vbuf->objs = objs;

cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_2D);
cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
@@ -900,12 +902,13 @@ virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev,
}

void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
- struct virtio_gpu_object *bo,
uint32_t ctx_id,
uint64_t offset, uint32_t level,
struct virtio_gpu_box *box,
+ struct virtio_gpu_object_array *objs,
struct virtio_gpu_fence *fence)
{
+ 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);
@@ -918,6 +921,8 @@ void virtio_gpu_cmd_transfer_to_host_3d(struct virtio_gpu_device *vgdev,
cmd_p = virtio_gpu_alloc_cmd(vgdev, &vbuf, sizeof(*cmd_p));
memset(cmd_p, 0, sizeof(*cmd_p));

+ vbuf->objs = objs;
+
cmd_p->hdr.type = cpu_to_le32(VIRTIO_GPU_CMD_TRANSFER_TO_HOST_3D);
cmd_p->hdr.ctx_id = cpu_to_le32(ctx_id);
cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle);
--
2.18.1