diff options
author | Gerd Hoffmann <kraxel@redhat.com> | 2019-08-29 12:32:52 +0200 |
---|---|---|
committer | Gerd Hoffmann <kraxel@redhat.com> | 2019-09-04 06:54:09 +0200 |
commit | e2324300f427ffca99135b256a97f9fb62fc2483 (patch) | |
tree | 100848d90d2c061ba85817cda287e43bb3ab024d | |
parent | da758d51968a88fc879bdbd16a0da4784499b5bb (diff) |
drm/virtio: rework virtio_gpu_object_create fencing
Rework fencing workflow. Stop using ttm helpers, use the
virtio_gpu_array_* helpers instead.
Due to using the gem reservation object it is initialized and ready for
use before calling ttm_bo_init. So we can simply use the standard
fencing workflow and drop the tricky logic which checks whenever the
command is in flight still.
v6: rewrite most of the patch.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Chia-I Wu <olvaffe@gmail.com>
Link: http://patchwork.freedesktop.org/patch/msgid/20190829103301.3539-10-kraxel@redhat.com
-rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_drv.h | 2 | ||||
-rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_object.c | 74 | ||||
-rw-r--r-- | drivers/gpu/drm/virtio/virtgpu_vq.c | 4 |
3 files changed, 37 insertions, 43 deletions
diff --git a/drivers/gpu/drm/virtio/virtgpu_drv.h b/drivers/gpu/drm/virtio/virtgpu_drv.h index f4f843aec18a..c6ea65f6507e 100644 --- a/drivers/gpu/drm/virtio/virtgpu_drv.h +++ b/drivers/gpu/drm/virtio/virtgpu_drv.h @@ -274,6 +274,7 @@ void virtio_gpu_free_vbufs(struct virtio_gpu_device *vgdev); void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo, struct virtio_gpu_object_params *params, + struct virtio_gpu_object_array *objs, struct virtio_gpu_fence *fence); void virtio_gpu_cmd_unref_resource(struct virtio_gpu_device *vgdev, uint32_t resource_id); @@ -336,6 +337,7 @@ void virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo, struct virtio_gpu_object_params *params, + struct virtio_gpu_object_array *objs, struct virtio_gpu_fence *fence); void virtio_gpu_ctrl_ack(struct virtqueue *vq); void virtio_gpu_cursor_ack(struct virtqueue *vq); diff --git a/drivers/gpu/drm/virtio/virtgpu_object.c b/drivers/gpu/drm/virtio/virtgpu_object.c index ad216d062507..6af2862c9a73 100644 --- a/drivers/gpu/drm/virtio/virtgpu_object.c +++ b/drivers/gpu/drm/virtio/virtgpu_object.c @@ -103,6 +103,7 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, struct virtio_gpu_object **bo_ptr, struct virtio_gpu_fence *fence) { + struct virtio_gpu_object_array *objs = NULL; struct virtio_gpu_object *bo; size_t acc_size; int ret; @@ -116,23 +117,34 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, if (bo == NULL) return -ENOMEM; ret = virtio_gpu_resource_id_get(vgdev, &bo->hw_res_handle); - if (ret < 0) { - kfree(bo); - return ret; - } + if (ret < 0) + goto err_free_gem; + params->size = roundup(params->size, PAGE_SIZE); ret = drm_gem_object_init(vgdev->ddev, &bo->gem_base, params->size); - if (ret != 0) { - virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); - kfree(bo); - return ret; - } + if (ret != 0) + goto err_put_id; + bo->dumb = params->dumb; + if (fence) { + ret = -ENOMEM; + objs = virtio_gpu_array_alloc(1); + if (!objs) + goto err_put_id; + virtio_gpu_array_add_obj(objs, &bo->gem_base); + + ret = virtio_gpu_array_lock_resv(objs); + if (ret != 0) + goto err_put_objs; + } + if (params->virgl) { - virtio_gpu_cmd_resource_create_3d(vgdev, bo, params, fence); + virtio_gpu_cmd_resource_create_3d(vgdev, bo, params, + objs, fence); } else { - virtio_gpu_cmd_create_resource(vgdev, bo, params, fence); + virtio_gpu_cmd_create_resource(vgdev, bo, params, + objs, fence); } virtio_gpu_init_ttm_placement(bo); @@ -145,40 +157,16 @@ int virtio_gpu_object_create(struct virtio_gpu_device *vgdev, if (ret != 0) return ret; - if (fence) { - struct virtio_gpu_fence_driver *drv = &vgdev->fence_drv; - struct list_head validate_list; - struct ttm_validate_buffer mainbuf; - struct ww_acquire_ctx ticket; - unsigned long irq_flags; - bool signaled; - - INIT_LIST_HEAD(&validate_list); - memset(&mainbuf, 0, sizeof(struct ttm_validate_buffer)); - - /* use a gem reference since unref list undoes them */ - drm_gem_object_get(&bo->gem_base); - mainbuf.bo = &bo->tbo; - list_add(&mainbuf.head, &validate_list); - - ret = virtio_gpu_object_list_validate(&ticket, &validate_list); - if (ret == 0) { - spin_lock_irqsave(&drv->lock, irq_flags); - signaled = virtio_fence_signaled(&fence->f); - if (!signaled) - /* virtio create command still in flight */ - ttm_eu_fence_buffer_objects(&ticket, &validate_list, - &fence->f); - spin_unlock_irqrestore(&drv->lock, irq_flags); - if (signaled) - /* virtio create command finished */ - ttm_eu_backoff_reservation(&ticket, &validate_list); - } - virtio_gpu_unref_list(&validate_list); - } - *bo_ptr = bo; return 0; + +err_put_objs: + virtio_gpu_array_put_free(objs); +err_put_id: + virtio_gpu_resource_id_put(vgdev, bo->hw_res_handle); +err_free_gem: + kfree(bo); + return ret; } void virtio_gpu_object_kunmap(struct virtio_gpu_object *bo) diff --git a/drivers/gpu/drm/virtio/virtgpu_vq.c b/drivers/gpu/drm/virtio/virtgpu_vq.c index 5137dcf11d31..7509424a7b92 100644 --- a/drivers/gpu/drm/virtio/virtgpu_vq.c +++ b/drivers/gpu/drm/virtio/virtgpu_vq.c @@ -396,6 +396,7 @@ retry: void virtio_gpu_cmd_create_resource(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo, struct virtio_gpu_object_params *params, + struct virtio_gpu_object_array *objs, struct virtio_gpu_fence *fence) { struct virtio_gpu_resource_create_2d *cmd_p; @@ -403,6 +404,7 @@ void virtio_gpu_cmd_create_resource(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_RESOURCE_CREATE_2D); cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); @@ -869,6 +871,7 @@ void virtio_gpu_cmd_resource_create_3d(struct virtio_gpu_device *vgdev, struct virtio_gpu_object *bo, struct virtio_gpu_object_params *params, + struct virtio_gpu_object_array *objs, struct virtio_gpu_fence *fence) { struct virtio_gpu_resource_create_3d *cmd_p; @@ -876,6 +879,7 @@ virtio_gpu_cmd_resource_create_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_RESOURCE_CREATE_3D); cmd_p->resource_id = cpu_to_le32(bo->hw_res_handle); |