if (obj && obj->id != id)
obj = NULL;
/* don't leak out unref'd fb's */
- if (obj && (obj->type == DRM_MODE_OBJECT_FB))
+ if (obj &&
+ (obj->type == DRM_MODE_OBJECT_FB ||
+ obj->type == DRM_MODE_OBJECT_BLOB))
obj = NULL;
mutex_unlock(&dev->mode_config.idr_mutex);
/* Framebuffers are reference counted and need their own lookup
* function.*/
- WARN_ON(type == DRM_MODE_OBJECT_FB);
+ WARN_ON(type == DRM_MODE_OBJECT_FB || type == DRM_MODE_OBJECT_BLOB);
obj = _object_find(dev, id, type);
return obj;
}
struct drm_mode_config *config = &dev->mode_config;
int ret;
+ WARN_ON(primary && primary->type != DRM_PLANE_TYPE_PRIMARY);
+ WARN_ON(cursor && cursor->type != DRM_PLANE_TYPE_CURSOR);
+
crtc->dev = dev;
crtc->funcs = funcs;
crtc->invert_dimensions = false;
return -ENOENT;
drm_modeset_lock_crtc(crtc, crtc->primary);
- crtc_resp->x = crtc->x;
- crtc_resp->y = crtc->y;
crtc_resp->gamma_size = crtc->gamma_size;
if (crtc->primary->fb)
crtc_resp->fb_id = crtc->primary->fb->base.id;
else
crtc_resp->fb_id = 0;
- if (crtc->enabled) {
-
- drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
- crtc_resp->mode_valid = 1;
+ if (crtc->state) {
+ crtc_resp->x = crtc->primary->state->src_x >> 16;
+ crtc_resp->y = crtc->primary->state->src_y >> 16;
+ if (crtc->state->enable) {
+ drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->state->mode);
+ crtc_resp->mode_valid = 1;
+ } else {
+ crtc_resp->mode_valid = 0;
+ }
} else {
- crtc_resp->mode_valid = 0;
+ crtc_resp->x = crtc->x;
+ crtc_resp->y = crtc->y;
+ if (crtc->enabled) {
+ drm_crtc_convert_to_umode(&crtc_resp->mode, &crtc->mode);
+ crtc_resp->mode_valid = 1;
+
+ } else {
+ crtc_resp->mode_valid = 0;
+ }
}
drm_modeset_unlock_crtc(crtc);
connector = drm_connector_find(dev, out_resp->connector_id);
if (!connector) {
ret = -ENOENT;
- goto out;
+ goto out_unlock;
}
for (i = 0; i < DRM_CONNECTOR_MAX_ENCODER; i++)
out:
drm_modeset_unlock(&dev->mode_config.connection_mutex);
+
+out_unlock:
mutex_unlock(&dev->mode_config.mutex);
return ret;
crtc = drm_encoder_get_crtc(encoder);
if (crtc)
enc_resp->crtc_id = crtc->base.id;
- else if (encoder->crtc)
- enc_resp->crtc_id = encoder->crtc->base.id;
else
enc_resp->crtc_id = 0;
drm_modeset_unlock(&dev->mode_config.connection_mutex);
return 0;
}
+/**
+ * drm_plane_check_pixel_format - Check if the plane supports the pixel format
+ * @plane: plane to check for format support
+ * @format: the pixel format
+ *
+ * Returns:
+ * Zero of @plane has @format in its list of supported pixel formats, -EINVAL
+ * otherwise.
+ */
+int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
+{
+ unsigned int i;
+
+ for (i = 0; i < plane->format_count; i++) {
+ if (format == plane->format_types[i])
+ return 0;
+ }
+
+ return -EINVAL;
+}
+
/*
* setplane_internal - setplane handler for internal callers
*
{
int ret = 0;
unsigned int fb_width, fb_height;
- unsigned int i;
/* No fb means shut it down */
if (!fb) {
}
/* Check whether this plane supports the fb pixel format. */
- for (i = 0; i < plane->format_count; i++)
- if (fb->pixel_format == plane->format_types[i])
- break;
- if (i == plane->format_count) {
+ ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
+ if (ret) {
DRM_DEBUG_KMS("Invalid pixel format %s\n",
drm_get_format_name(fb->pixel_format));
- ret = -EINVAL;
goto out;
}
+ /* Give drivers some help against integer overflows */
+ if (crtc_w > INT_MAX ||
+ crtc_x > INT_MAX - (int32_t) crtc_w ||
+ crtc_h > INT_MAX ||
+ crtc_y > INT_MAX - (int32_t) crtc_h) {
+ DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
+ crtc_w, crtc_h, crtc_x, crtc_y);
+ return -ERANGE;
+ }
+
+
fb_width = fb->width << 16;
fb_height = fb->height << 16;
if (!drm_core_check_feature(dev, DRIVER_MODESET))
return -EINVAL;
- /* Give drivers some help against integer overflows */
- if (plane_req->crtc_w > INT_MAX ||
- plane_req->crtc_x > INT_MAX - (int32_t) plane_req->crtc_w ||
- plane_req->crtc_h > INT_MAX ||
- plane_req->crtc_y > INT_MAX - (int32_t) plane_req->crtc_h) {
- DRM_DEBUG_KMS("Invalid CRTC coordinates %ux%u+%d+%d\n",
- plane_req->crtc_w, plane_req->crtc_h,
- plane_req->crtc_x, plane_req->crtc_y);
- return -ERANGE;
- }
-
/*
* First, find the plane, crtc, and fb objects. If not available,
* we don't bother to call the driver.
drm_mode_set_crtcinfo(mode, CRTC_INTERLACE_HALVE_V);
+ /*
+ * Check whether the primary plane supports the fb pixel format.
+ * Drivers not implementing the universal planes API use a
+ * default formats list provided by the DRM core which doesn't
+ * match real hardware capabilities. Skip the check in that
+ * case.
+ */
+ if (!crtc->primary->format_default) {
+ ret = drm_plane_check_pixel_format(crtc->primary,
+ fb->pixel_format);
+ if (ret) {
+ DRM_DEBUG_KMS("Invalid pixel format %s\n",
+ drm_get_format_name(fb->pixel_format));
+ goto out;
+ }
+ }
+
ret = drm_crtc_check_viewport(crtc, crtc_req->x, crtc_req->y,
mode, fb);
if (ret)
DRM_DEBUG_KMS("bad pitch %u for plane %d\n", r->pitches[i], i);
return -EINVAL;
}
+
+ if (r->modifier[i] && !(r->flags & DRM_MODE_FB_MODIFIERS)) {
+ DRM_DEBUG_KMS("bad fb modifier %llu for plane %d\n",
+ r->modifier[i], i);
+ return -EINVAL;
+ }
}
return 0;
struct drm_framebuffer *fb;
int ret;
- if (r->flags & ~DRM_MODE_FB_INTERLACED) {
+ if (r->flags & ~(DRM_MODE_FB_INTERLACED | DRM_MODE_FB_MODIFIERS)) {
DRM_DEBUG_KMS("bad framebuffer flags 0x%08x\n", r->flags);
return ERR_PTR(-EINVAL);
}
return ERR_PTR(-EINVAL);
}
+ if (r->flags & DRM_MODE_FB_MODIFIERS &&
+ !dev->mode_config.allow_fb_modifiers) {
+ DRM_DEBUG_KMS("driver does not support fb modifiers\n");
+ return ERR_PTR(-EINVAL);
+ }
+
ret = framebuffer_check(r);
if (ret)
return ERR_PTR(ret);
return ret;
}
-static struct drm_property_blob *
+struct drm_property_blob *
drm_property_create_blob(struct drm_device *dev, size_t length,
const void *data)
{
if (!blob)
return NULL;
+ blob->length = length;
+ blob->dev = dev;
+
+ memcpy(blob->data, data, length);
+
+ mutex_lock(&dev->mode_config.blob_lock);
+
ret = drm_mode_object_get(dev, &blob->base, DRM_MODE_OBJECT_BLOB);
if (ret) {
kfree(blob);
+ mutex_unlock(&dev->mode_config.blob_lock);
return NULL;
}
- blob->length = length;
-
- memcpy(blob->data, data, length);
+ kref_init(&blob->refcount);
list_add_tail(&blob->head, &dev->mode_config.property_blob_list);
+
+ mutex_unlock(&dev->mode_config.blob_lock);
+
return blob;
}
+EXPORT_SYMBOL(drm_property_create_blob);
-static void drm_property_destroy_blob(struct drm_device *dev,
- struct drm_property_blob *blob)
+/**
+ * drm_property_free_blob - Blob property destructor
+ *
+ * Internal free function for blob properties; must not be used directly.
+ *
+ * @param kref Reference
+ */
+static void drm_property_free_blob(struct kref *kref)
{
- drm_mode_object_put(dev, &blob->base);
+ struct drm_property_blob *blob =
+ container_of(kref, struct drm_property_blob, refcount);
+
+ WARN_ON(!mutex_is_locked(&blob->dev->mode_config.blob_lock));
+
list_del(&blob->head);
+ drm_mode_object_put(blob->dev, &blob->base);
+
kfree(blob);
}
+/**
+ * drm_property_unreference_blob - Unreference a blob property
+ *
+ * Drop a reference on a blob property. May free the object.
+ *
+ * @param blob Pointer to blob property
+ */
+void drm_property_unreference_blob(struct drm_property_blob *blob)
+{
+ struct drm_device *dev;
+
+ if (!blob)
+ return;
+
+ dev = blob->dev;
+
+ DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
+
+ if (kref_put_mutex(&blob->refcount, drm_property_free_blob,
+ &dev->mode_config.blob_lock))
+ mutex_unlock(&dev->mode_config.blob_lock);
+ else
+ might_lock(&dev->mode_config.blob_lock);
+
+}
+EXPORT_SYMBOL(drm_property_unreference_blob);
+
+/**
+ * drm_property_unreference_blob_locked - Unreference a blob property with blob_lock held
+ *
+ * Drop a reference on a blob property. May free the object. This must be
+ * called with blob_lock held.
+ *
+ * @param dev Device the blob was created on
+ * @param blob Pointer to blob property
+ */
+static void drm_property_unreference_blob_locked(struct drm_property_blob *blob)
+{
+ if (!blob)
+ return;
+
+ DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
+
+ kref_put(&blob->refcount, drm_property_free_blob);
+}
+
+/**
+ * drm_property_reference_blob - Take a reference on an existing property
+ *
+ * Take a new reference on an existing blob property.
+ *
+ * @param blob Pointer to blob property
+ */
+struct drm_property_blob *drm_property_reference_blob(struct drm_property_blob *blob)
+{
+ DRM_DEBUG("%p: blob ID: %d (%d)\n", blob, blob->base.id, atomic_read(&blob->refcount.refcount));
+ kref_get(&blob->refcount);
+ return blob;
+}
+EXPORT_SYMBOL(drm_property_reference_blob);
+
+/*
+ * Like drm_property_lookup_blob, but does not return an additional reference.
+ * Must be called with blob_lock held.
+ */
+static struct drm_property_blob *__drm_property_lookup_blob(struct drm_device *dev,
+ uint32_t id)
+{
+ struct drm_mode_object *obj = NULL;
+ struct drm_property_blob *blob;
+
+ WARN_ON(!mutex_is_locked(&dev->mode_config.blob_lock));
+
+ mutex_lock(&dev->mode_config.idr_mutex);
+ obj = idr_find(&dev->mode_config.crtc_idr, id);
+ if (!obj || (obj->type != DRM_MODE_OBJECT_BLOB) || (obj->id != id))
+ blob = NULL;
+ else
+ blob = obj_to_blob(obj);
+ mutex_unlock(&dev->mode_config.idr_mutex);
+
+ return blob;
+}
+
+/**
+ * drm_property_lookup_blob - look up a blob property and take a reference
+ * @dev: drm device
+ * @id: id of the blob property
+ *
+ * If successful, this takes an additional reference to the blob property.
+ * callers need to make sure to eventually unreference the returned property
+ * again, using @drm_property_unreference_blob.
+ */
+struct drm_property_blob *drm_property_lookup_blob(struct drm_device *dev,
+ uint32_t id)
+{
+ struct drm_property_blob *blob;
+
+ mutex_lock(&dev->mode_config.blob_lock);
+ blob = __drm_property_lookup_blob(dev, id);
+ if (blob) {
+ if (!kref_get_unless_zero(&blob->refcount))
+ blob = NULL;
+ }
+ mutex_unlock(&dev->mode_config.blob_lock);
+
+ return blob;
+}
+EXPORT_SYMBOL(drm_property_lookup_blob);
+
+/**
+ * drm_property_replace_global_blob - atomically replace existing blob property
+ * @dev: drm device
+ * @replace: location of blob property pointer to be replaced
+ * @length: length of data for new blob, or 0 for no data
+ * @data: content for new blob, or NULL for no data
+ * @obj_holds_id: optional object for property holding blob ID
+ * @prop_holds_id: optional property holding blob ID
+ * @return 0 on success or error on failure
+ *
+ * This function will atomically replace a global property in the blob list,
+ * optionally updating a property which holds the ID of that property. It is
+ * guaranteed to be atomic: no caller will be allowed to see intermediate
+ * results, and either the entire operation will succeed and clean up the
+ * previous property, or it will fail and the state will be unchanged.
+ *
+ * If length is 0 or data is NULL, no new blob will be created, and the holding
+ * property, if specified, will be set to 0.
+ *
+ * Access to the replace pointer is assumed to be protected by the caller, e.g.
+ * by holding the relevant modesetting object lock for its parent.
+ *
+ * For example, a drm_connector has a 'PATH' property, which contains the ID
+ * of a blob property with the value of the MST path information. Calling this
+ * function with replace pointing to the connector's path_blob_ptr, length and
+ * data set for the new path information, obj_holds_id set to the connector's
+ * base object, and prop_holds_id set to the path property name, will perform
+ * a completely atomic update. The access to path_blob_ptr is protected by the
+ * caller holding a lock on the connector.
+ */
+static int drm_property_replace_global_blob(struct drm_device *dev,
+ struct drm_property_blob **replace,
+ size_t length,
+ const void *data,
+ struct drm_mode_object *obj_holds_id,
+ struct drm_property *prop_holds_id)
+{
+ struct drm_property_blob *new_blob = NULL;
+ struct drm_property_blob *old_blob = NULL;
+ int ret;
+
+ WARN_ON(replace == NULL);
+
+ old_blob = *replace;
+
+ if (length && data) {
+ new_blob = drm_property_create_blob(dev, length, data);
+ if (!new_blob)
+ return -EINVAL;
+ }
+
+ /* This does not need to be synchronised with blob_lock, as the
+ * get_properties ioctl locks all modesetting objects, and
+ * obj_holds_id must be locked before calling here, so we cannot
+ * have its value out of sync with the list membership modified
+ * below under blob_lock. */
+ if (obj_holds_id) {
+ ret = drm_object_property_set_value(obj_holds_id,
+ prop_holds_id,
+ new_blob ?
+ new_blob->base.id : 0);
+ if (ret != 0)
+ goto err_created;
+ }
+
+ if (old_blob)
+ drm_property_unreference_blob(old_blob);
+
+ *replace = new_blob;
+
+ return 0;
+
+err_created:
+ drm_property_unreference_blob(new_blob);
+ return ret;
+}
+
/**
* drm_mode_getblob_ioctl - get the contents of a blob property value
* @dev: DRM device
return -EINVAL;
drm_modeset_lock_all(dev);
- blob = drm_property_blob_find(dev, out_resp->blob_id);
+ mutex_lock(&dev->mode_config.blob_lock);
+ blob = __drm_property_lookup_blob(dev, out_resp->blob_id);
if (!blob) {
ret = -ENOENT;
goto done;
out_resp->length = blob->length;
done:
+ mutex_unlock(&dev->mode_config.blob_lock);
drm_modeset_unlock_all(dev);
return ret;
}
/**
* drm_mode_connector_set_path_property - set tile property on connector
* @connector: connector to set property on.
- * @path: path to use for property.
+ * @path: path to use for property; must not be NULL.
*
* This creates a property to expose to userspace to specify a
* connector path. This is mainly used for DisplayPort MST where
const char *path)
{
struct drm_device *dev = connector->dev;
- size_t size = strlen(path) + 1;
int ret;
- connector->path_blob_ptr = drm_property_create_blob(connector->dev,
- size, path);
- if (!connector->path_blob_ptr)
- return -EINVAL;
-
- ret = drm_object_property_set_value(&connector->base,
- dev->mode_config.path_property,
- connector->path_blob_ptr->base.id);
+ ret = drm_property_replace_global_blob(dev,
+ &connector->path_blob_ptr,
+ strlen(path) + 1,
+ path,
+ &connector->base,
+ dev->mode_config.path_property);
return ret;
}
EXPORT_SYMBOL(drm_mode_connector_set_path_property);
int drm_mode_connector_set_tile_property(struct drm_connector *connector)
{
struct drm_device *dev = connector->dev;
- int ret, size;
char tile[256];
-
- if (connector->tile_blob_ptr)
- drm_property_destroy_blob(dev, connector->tile_blob_ptr);
+ int ret;
if (!connector->has_tile) {
- connector->tile_blob_ptr = NULL;
- ret = drm_object_property_set_value(&connector->base,
- dev->mode_config.tile_property, 0);
+ ret = drm_property_replace_global_blob(dev,
+ &connector->tile_blob_ptr,
+ 0,
+ NULL,
+ &connector->base,
+ dev->mode_config.tile_property);
return ret;
}
connector->num_h_tile, connector->num_v_tile,
connector->tile_h_loc, connector->tile_v_loc,
connector->tile_h_size, connector->tile_v_size);
- size = strlen(tile) + 1;
-
- connector->tile_blob_ptr = drm_property_create_blob(connector->dev,
- size, tile);
- if (!connector->tile_blob_ptr)
- return -EINVAL;
- ret = drm_object_property_set_value(&connector->base,
- dev->mode_config.tile_property,
- connector->tile_blob_ptr->base.id);
+ ret = drm_property_replace_global_blob(dev,
+ &connector->tile_blob_ptr,
+ strlen(tile) + 1,
+ tile,
+ &connector->base,
+ dev->mode_config.tile_property);
return ret;
}
EXPORT_SYMBOL(drm_mode_connector_set_tile_property);
const struct edid *edid)
{
struct drm_device *dev = connector->dev;
- size_t size;
+ size_t size = 0;
int ret;
/* ignore requests to set edid when overridden */
if (connector->override_edid)
return 0;
- if (connector->edid_blob_ptr)
- drm_property_destroy_blob(dev, connector->edid_blob_ptr);
-
- /* Delete edid, when there is none. */
- if (!edid) {
- connector->edid_blob_ptr = NULL;
- ret = drm_object_property_set_value(&connector->base, dev->mode_config.edid_property, 0);
- return ret;
- }
-
- size = EDID_LENGTH * (1 + edid->extensions);
- connector->edid_blob_ptr = drm_property_create_blob(connector->dev,
- size, edid);
- if (!connector->edid_blob_ptr)
- return -EINVAL;
-
- ret = drm_object_property_set_value(&connector->base,
- dev->mode_config.edid_property,
- connector->edid_blob_ptr->base.id);
+ if (edid)
+ size = EDID_LENGTH + (1 + edid->extensions);
+ ret = drm_property_replace_global_blob(dev,
+ &connector->edid_blob_ptr,
+ size,
+ edid,
+ &connector->base,
+ dev->mode_config.edid_property);
return ret;
}
EXPORT_SYMBOL(drm_mode_connector_update_edid_property);
valid_mask |= (1ULL << property->values[i]);
return !(value & ~valid_mask);
} else if (drm_property_type_is(property, DRM_MODE_PROP_BLOB)) {
- /* Only the driver knows */
- return true;
+ struct drm_property_blob *blob;
+
+ if (value == 0)
+ return true;
+
+ blob = drm_property_lookup_blob(property->dev, value);
+ if (blob) {
+ *ref = &blob->base;
+ return true;
+ } else {
+ return false;
+ }
} else if (drm_property_type_is(property, DRM_MODE_PROP_OBJECT)) {
/* a zero value for an object property translates to null: */
if (value == 0)
drm_modeset_lock_init(&dev->mode_config.connection_mutex);
mutex_init(&dev->mode_config.idr_mutex);
mutex_init(&dev->mode_config.fb_lock);
+ mutex_init(&dev->mode_config.blob_lock);
INIT_LIST_HEAD(&dev->mode_config.fb_list);
INIT_LIST_HEAD(&dev->mode_config.crtc_list);
INIT_LIST_HEAD(&dev->mode_config.connector_list);
list_for_each_entry_safe(blob, bt, &dev->mode_config.property_blob_list,
head) {
- drm_property_destroy_blob(dev, blob);
+ drm_property_unreference_blob(blob);
}
/*
mutex_unlock(&dev->mode_config.idr_mutex);
return NULL;
}
+EXPORT_SYMBOL(drm_mode_get_tile_group);
/**
* drm_mode_create_tile_group - create a tile group from a displayid description
mutex_unlock(&dev->mode_config.idr_mutex);
return tg;
}
+EXPORT_SYMBOL(drm_mode_create_tile_group);
projects / firefly-linux-kernel-4.4.55.git / blobdiff