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@xxxxxxxxxx>
Reviewed-by: Brian Paul <brianp@xxxxxxxxxx>
---
drivers/gpu/drm/vmwgfx/vmwgfx_surface.c | 105 ++++++++++++++++++++-----------
include/uapi/drm/vmwgfx_drm.h | 12 +++-
2 files changed, 81 insertions(+), 36 deletions(-)
diff --git a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
index aac243b..d50cd76 100644
--- a/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
+++ b/drivers/gpu/drm/vmwgfx/vmwgfx_surface.c
@@ -876,6 +876,64 @@ out_unlock:
return ret;
}
+
+static int
+vmw_surface_handle_reference(struct vmw_private *dev_priv,
+ struct drm_file *file_priv,
+ uint32_t u_handle,
+ enum drm_vmw_handle_type handle_type,
+ struct ttm_base_object **base_p)
+{
+ struct ttm_object_file *tfile = vmw_fpriv(file_priv)->tfile;
+ uint32_t handle;
+ struct ttm_base_object *base;
+ int ret;
+
+ if (handle_type == DRM_VMW_HANDLE_PRIME) {
+ ret = ttm_prime_fd_to_handle(tfile, u_handle, &handle);
+ if (unlikely(ret != 0))
+ return ret;
+ } else {
+ if (unlikely(drm_is_render_client(file_priv))) {
+ DRM_ERROR("Render client refused legacy "
+ "surface reference.\n");
+ return -EACCES;
+ }
+ handle = u_handle;
+ }
+
+ ret = -EINVAL;
+ base = ttm_base_object_lookup_for_ref(dev_priv->tdev, handle);
+ if (unlikely(base == NULL)) {
+ DRM_ERROR("Could not find surface to reference.\n");
+ goto out_no_lookup;
+ }
+
+ if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE)) {
+ DRM_ERROR("Referenced object is not a surface.\n");
+ goto out_bad_resource;
+ }
+
+ if (handle_type != DRM_VMW_HANDLE_PRIME) {
+ ret = ttm_ref_object_add(tfile, base, TTM_REF_USAGE, NULL);
+ if (unlikely(ret != 0)) {
+ DRM_ERROR("Could not add a reference to a surface.\n");
+ goto out_bad_resource;
+ }
+ }
+
+ *base_p = base;
+ return 0;
+
+out_bad_resource:
+ ttm_base_object_unref(&base);
+out_no_lookup:
+ if (handle_type == DRM_VMW_HANDLE_PRIME)
+ (void) ttm_ref_object_base_unref(tfile, handle, TTM_REF_USAGE);
+
+ return ret;
+}
+
/**
* vmw_user_surface_define_ioctl - Ioctl function implementing
* the user surface reference functionality.
@@ -897,27 +955,16 @@ int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
struct vmw_user_surface *user_srf;
struct drm_vmw_size __user *user_sizes;
struct ttm_base_object *base;
- int ret = -EINVAL;
-
- base = ttm_base_object_lookup_for_ref(dev_priv->tdev, req->sid);
- if (unlikely(base == NULL)) {
- DRM_ERROR("Could not find surface to reference.\n");
- return -EINVAL;
- }
+ int ret;
- if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE))
- goto out_bad_resource;
+ ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
+ req->handle_type, &base);
+ if (unlikely(ret != 0))
+ return ret;
user_srf = container_of(base, struct vmw_user_surface, prime.base);
srf = &user_srf->srf;
- ret = ttm_ref_object_add(tfile, &user_srf->prime.base,
- TTM_REF_USAGE, NULL);
- if (unlikely(ret != 0)) {
- DRM_ERROR("Could not add a reference to a surface.\n");
- goto out_no_reference;
- }
-
rep->flags = srf->flags;
rep->format = srf->format;
memcpy(rep->mip_levels, srf->mip_levels, sizeof(srf->mip_levels));
@@ -930,10 +977,10 @@ int vmw_surface_reference_ioctl(struct drm_device *dev, void *data,
if (unlikely(ret != 0)) {
DRM_ERROR("copy_to_user failed %p %u\n",
user_sizes, srf->num_sizes);
+ ttm_ref_object_base_unref(tfile, base->hash.key, TTM_REF_USAGE);
ret = -EFAULT;
}
-out_bad_resource:
-out_no_reference:
+
ttm_base_object_unref(&base);
return ret;
@@ -1313,14 +1360,10 @@ int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
uint32_t backup_handle;
int ret = -EINVAL;
- base = ttm_base_object_lookup_for_ref(dev_priv->tdev, req->sid);
- if (unlikely(base == NULL)) {
- DRM_ERROR("Could not find surface to reference.\n");
- return -EINVAL;
- }
-
- if (unlikely(ttm_base_object_type(base) != VMW_RES_SURFACE))
- goto out_bad_resource;
+ ret = vmw_surface_handle_reference(dev_priv, file_priv, req->sid,
+ req->handle_type, &base);
+ if (unlikely(ret != 0))
+ return ret;
user_srf = container_of(base, struct vmw_user_surface, prime.base);
srf = &user_srf->srf;
@@ -1329,13 +1372,6 @@ int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
goto out_bad_resource;
}
- ret = ttm_ref_object_add(tfile, &user_srf->prime.base,
- TTM_REF_USAGE, NULL);
- if (unlikely(ret != 0)) {
- DRM_ERROR("Could not add a reference to a GB surface.\n");
- goto out_bad_resource;
- }
-
mutex_lock(&dev_priv->cmdbuf_mutex); /* Protect res->backup */
ret = vmw_user_dmabuf_reference(tfile, srf->res.backup,
&backup_handle);
@@ -1344,8 +1380,7 @@ int vmw_gb_surface_reference_ioctl(struct drm_device *dev, void *data,
if (unlikely(ret != 0)) {
DRM_ERROR("Could not add a reference to a GB surface "
"backup buffer.\n");
- (void) ttm_ref_object_base_unref(vmw_fpriv(file_priv)->tfile,
- req->sid,
+ (void) ttm_ref_object_base_unref(tfile, base->hash.key,
TTM_REF_USAGE);
goto out_bad_resource;
}
diff --git a/include/uapi/drm/vmwgfx_drm.h b/include/uapi/drm/vmwgfx_drm.h
index 87792a5..4fc66f6 100644
--- a/include/uapi/drm/vmwgfx_drm.h
+++ b/include/uapi/drm/vmwgfx_drm.h
@@ -90,6 +90,15 @@
#define DRM_VMW_PARAM_MAX_MOB_SIZE 10
/**
+ * enum drm_vmw_handle_type - handle type for ref ioctls
+ *
+ */
+enum drm_vmw_handle_type {
+ DRM_VMW_HANDLE_LEGACY = 0,
+ DRM_VMW_HANDLE_PRIME = 1
+};
+
+/**
* struct drm_vmw_getparam_arg
*
* @value: Returned value. //Out
@@ -177,6 +186,7 @@ struct drm_vmw_surface_create_req {
* struct drm_wmv_surface_arg
*
* @sid: Surface id of created surface or surface to destroy or reference.
+ * @handle_type: Handle type for DRM_VMW_REF_SURFACE Ioctl.
*
* Output data from the DRM_VMW_CREATE_SURFACE Ioctl.
* Input argument to the DRM_VMW_UNREF_SURFACE Ioctl.
@@ -185,7 +195,7 @@ struct drm_vmw_surface_create_req {
struct drm_vmw_surface_arg {
int32_t sid;
- uint32_t pad64;
+ enum drm_vmw_handle_type handle_type;
};
/**
--
1.7.10.4
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