drm/vmwgfx: Allow prime fds in the surface reference ioctls
Allow prime fds and at the same time block legacy handles for render-nodes in the surface reference ioctls. This means these ioctls can be used directly from prime-aware clients, and that they can be called from render-nodes. Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com> Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
Родитель
4649926d04
Коммит
adebcb20e4
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@ -876,6 +876,64 @@ out_unlock:
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return ret;
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}
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static int
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vmw_surface_handle_reference(struct vmw_private *dev_priv,
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struct drm_file *file_priv,
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uint32_t u_handle,
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enum drm_vmw_handle_type handle_type,
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struct ttm_base_object **base_p)
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{
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struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
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uint32_t handle;
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struct ttm_base_object *base;
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int ret;
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if (handle_type == DRM_VMW_HANDLE_PRIME) {
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ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
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if (unlikely(ret != 0))
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return ret;
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} else {
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if (unlikely(drm_is_render_client(file_priv))) {
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DRM_ERROR("Render client refused legacy "
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"surface reference.\n");
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return -EACCES;
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}
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handle = u_handle;
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}
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ret = -EINVAL;
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base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
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if (unlikely(base == NULL)) {
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DRM_ERROR("Could not find surface to reference.\n");
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goto out_no_lookup;
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}
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if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
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DRM_ERROR("Referenced object is not a surface.\n");
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goto out_bad_resource;
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}
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if (handle_type != DRM_VMW_HANDLE_PRIME) {
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ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Could not add a reference to a surface.\n");
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goto out_bad_resource;
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}
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}
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*base_p = base;
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return 0;
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out_bad_resource:
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ttm_base_object_unref(&base);
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out_no_lookup:
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if (handle_type == DRM_VMW_HANDLE_PRIME)
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(void) ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
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return ret;
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}
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/**
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* vmw_user_surface_define_ioctl - Ioctl function implementing
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* the user surface reference functionality.
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@ -897,27 +955,16 @@ int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
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struct vmw_user_surface *user_srf;
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struct drm_vmw_size __user *user_sizes;
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struct ttm_base_object *base;
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int ret = -EINVAL;
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int ret;
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base = ttm_base_object_lookup_for_ref(dev_priv->tdev, req->sid);
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if (unlikely(base == NULL)) {
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DRM_ERROR("Could not find surface to reference.\n");
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return -EINVAL;
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}
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if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE))
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goto out_bad_resource;
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ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
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req->handle_type, &base);
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if (unlikely(ret != 0))
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return ret;
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user_srf = container_of(base, struct vmw_user_surface, prime.base);
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srf = &user_srf->srf;
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ret = ttm_ref_object_add(tfile, &user_srf->prime.base,
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TTM_REF_USAGE, NULL);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Could not add a reference to a surface.\n");
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goto out_no_reference;
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}
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rep->flags = srf->flags;
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rep->format = srf->format;
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memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
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@ -930,10 +977,10 @@ int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
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if (unlikely(ret != 0)) {
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DRM_ERROR("copy_to_user failed %p %u\n",
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user_sizes, srf->num_sizes);
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ttm_ref_object_base_unref(tfile, base->hash.key, TTM_REF_USAGE);
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ret = -EFAULT;
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}
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out_bad_resource:
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out_no_reference:
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ttm_base_object_unref(&base);
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return ret;
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@ -1313,14 +1360,10 @@ int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
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uint32_t backup_handle;
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int ret = -EINVAL;
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base = ttm_base_object_lookup_for_ref(dev_priv->tdev, req->sid);
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if (unlikely(base == NULL)) {
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DRM_ERROR("Could not find surface to reference.\n");
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return -EINVAL;
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}
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if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE))
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goto out_bad_resource;
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ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
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req->handle_type, &base);
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if (unlikely(ret != 0))
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return ret;
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user_srf = container_of(base, struct vmw_user_surface, prime.base);
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srf = &user_srf->srf;
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@ -1329,13 +1372,6 @@ int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
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goto out_bad_resource;
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}
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ret = ttm_ref_object_add(tfile, &user_srf->prime.base,
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TTM_REF_USAGE, NULL);
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if (unlikely(ret != 0)) {
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DRM_ERROR("Could not add a reference to a GB surface.\n");
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goto out_bad_resource;
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}
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mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */
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ret = vmw_user_dmabuf_reference(tfile, srf->res.backup,
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&backup_handle);
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@ -1344,8 +1380,7 @@ int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
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if (unlikely(ret != 0)) {
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DRM_ERROR("Could not add a reference to a GB surface "
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"backup buffer.\n");
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(void) ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
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req->sid,
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(void) ttm_ref_object_base_unref(tfile, base->hash.key,
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TTM_REF_USAGE);
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goto out_bad_resource;
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}
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@ -89,6 +89,15 @@
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#define DRM_VMW_PARAM_MAX_MOB_MEMORY 9
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#define DRM_VMW_PARAM_MAX_MOB_SIZE 10
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/**
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* enum drm_vmw_handle_type - handle type for ref ioctls
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*
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*/
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enum drm_vmw_handle_type {
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DRM_VMW_HANDLE_LEGACY = 0,
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DRM_VMW_HANDLE_PRIME = 1
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};
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/**
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* struct drm_vmw_getparam_arg
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*
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@ -177,6 +186,7 @@ struct drm_vmw_surface_create_req {
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* struct drm_wmv_surface_arg
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*
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* @sid: Surface id of created surface or surface to destroy or reference.
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* @handle_type: Handle type for DRM_VMW_REF_SURFACE Ioctl.
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*
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* Output data from the DRM_VMW_CREATE_SURFACE Ioctl.
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* Input argument to the DRM_VMW_UNREF_SURFACE Ioctl.
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@ -185,7 +195,7 @@ struct drm_vmw_surface_create_req {
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struct drm_vmw_surface_arg {
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int32_t sid;
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uint32_t pad64;
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enum drm_vmw_handle_type handle_type;
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};
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/**
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