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![Daniel Vetter](/assets/img/avatar_default.png)
I screwed up rebasing of my patch in
commit 43968d7b80
Author: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Wed Sep 21 10:59:24 2016 +0200
drm: Extract drm_plane.[hc]
which meant on error paths drm_crtc_vblank_put could be called without
a get, leading to an underrun of the refcount.
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=98020
Reported-and-tested-by: Andy Furniss <adf.lists@gmail.com>
Cc: Sean Paul <seanpaul@chromium.org>
Cc: Michel Dänzer <michel@daenzer.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: http://patchwork.freedesktop.org/patch/msgid/20161003082827.11586-1-daniel.vetter@ffwll.ch
Signed-off-by: Dave Airlie <airlied@redhat.com>
906 lines
24 KiB
C
906 lines
24 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Permission to use, copy, modify, distribute, and sell this software and its
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* documentation for any purpose is hereby granted without fee, provided that
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* the above copyright notice appear in all copies and that both that copyright
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* notice and this permission notice appear in supporting documentation, and
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* that the name of the copyright holders not be used in advertising or
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* publicity pertaining to distribution of the software without specific,
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* written prior permission. The copyright holders make no representations
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* about the suitability of this software for any purpose. It is provided "as
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* is" without express or implied warranty.
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*
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* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include <drm/drmP.h>
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#include <drm/drm_plane.h>
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#include "drm_crtc_internal.h"
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/**
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* DOC: overview
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*
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* A plane represents an image source that can be blended with or overlayed on
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* top of a CRTC during the scanout process. Planes take their input data from a
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* &drm_framebuffer object. The plane itself specifies the cropping and scaling
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* of that image, and where it is placed on the visible are of a display
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* pipeline, represented by &drm_crtc. A plane can also have additional
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* properties that specify how the pixels are positioned and blended, like
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* rotation or Z-position. All these properties are stored in &drm_plane_state.
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*
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* To create a plane, a KMS drivers allocates and zeroes an instances of
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* struct &drm_plane (possibly as part of a larger structure) and registers it
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* with a call to drm_universal_plane_init().
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*
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* Cursor and overlay planes are optional. All drivers should provide one
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* primary plane per CRTC to avoid surprising userspace too much. See enum
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* &drm_plane_type for a more in-depth discussion of these special uapi-relevant
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* plane types. Special planes are associated with their CRTC by calling
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* drm_crtc_init_with_planes().
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*
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* The type of a plane is exposed in the immutable "type" enumeration property,
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* which has one of the following values: "Overlay", "Primary", "Cursor".
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*/
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static unsigned int drm_num_planes(struct drm_device *dev)
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{
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unsigned int num = 0;
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struct drm_plane *tmp;
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drm_for_each_plane(tmp, dev) {
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num++;
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}
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return num;
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}
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/**
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* drm_universal_plane_init - Initialize a new universal plane object
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* @dev: DRM device
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* @plane: plane object to init
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* @possible_crtcs: bitmask of possible CRTCs
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* @funcs: callbacks for the new plane
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* @formats: array of supported formats (DRM_FORMAT\_\*)
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* @format_count: number of elements in @formats
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* @type: type of plane (overlay, primary, cursor)
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* @name: printf style format string for the plane name, or NULL for default name
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*
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* Initializes a plane object of type @type.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_universal_plane_init(struct drm_device *dev, struct drm_plane *plane,
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unsigned long possible_crtcs,
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const struct drm_plane_funcs *funcs,
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const uint32_t *formats, unsigned int format_count,
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enum drm_plane_type type,
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const char *name, ...)
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{
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struct drm_mode_config *config = &dev->mode_config;
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int ret;
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ret = drm_mode_object_get(dev, &plane->base, DRM_MODE_OBJECT_PLANE);
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if (ret)
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return ret;
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drm_modeset_lock_init(&plane->mutex);
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plane->base.properties = &plane->properties;
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plane->dev = dev;
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plane->funcs = funcs;
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plane->format_types = kmalloc_array(format_count, sizeof(uint32_t),
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GFP_KERNEL);
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if (!plane->format_types) {
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DRM_DEBUG_KMS("out of memory when allocating plane\n");
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drm_mode_object_unregister(dev, &plane->base);
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return -ENOMEM;
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}
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if (name) {
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va_list ap;
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va_start(ap, name);
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plane->name = kvasprintf(GFP_KERNEL, name, ap);
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va_end(ap);
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} else {
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plane->name = kasprintf(GFP_KERNEL, "plane-%d",
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drm_num_planes(dev));
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}
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if (!plane->name) {
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kfree(plane->format_types);
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drm_mode_object_unregister(dev, &plane->base);
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return -ENOMEM;
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}
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memcpy(plane->format_types, formats, format_count * sizeof(uint32_t));
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plane->format_count = format_count;
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plane->possible_crtcs = possible_crtcs;
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plane->type = type;
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list_add_tail(&plane->head, &config->plane_list);
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plane->index = config->num_total_plane++;
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if (plane->type == DRM_PLANE_TYPE_OVERLAY)
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config->num_overlay_plane++;
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drm_object_attach_property(&plane->base,
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config->plane_type_property,
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plane->type);
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if (drm_core_check_feature(dev, DRIVER_ATOMIC)) {
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drm_object_attach_property(&plane->base, config->prop_fb_id, 0);
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drm_object_attach_property(&plane->base, config->prop_crtc_id, 0);
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drm_object_attach_property(&plane->base, config->prop_crtc_x, 0);
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drm_object_attach_property(&plane->base, config->prop_crtc_y, 0);
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drm_object_attach_property(&plane->base, config->prop_crtc_w, 0);
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drm_object_attach_property(&plane->base, config->prop_crtc_h, 0);
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drm_object_attach_property(&plane->base, config->prop_src_x, 0);
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drm_object_attach_property(&plane->base, config->prop_src_y, 0);
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drm_object_attach_property(&plane->base, config->prop_src_w, 0);
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drm_object_attach_property(&plane->base, config->prop_src_h, 0);
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}
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return 0;
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}
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EXPORT_SYMBOL(drm_universal_plane_init);
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int drm_plane_register_all(struct drm_device *dev)
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{
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struct drm_plane *plane;
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int ret = 0;
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drm_for_each_plane(plane, dev) {
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if (plane->funcs->late_register)
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ret = plane->funcs->late_register(plane);
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if (ret)
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return ret;
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}
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return 0;
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}
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void drm_plane_unregister_all(struct drm_device *dev)
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{
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struct drm_plane *plane;
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drm_for_each_plane(plane, dev) {
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if (plane->funcs->early_unregister)
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plane->funcs->early_unregister(plane);
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}
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}
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/**
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* drm_plane_init - Initialize a legacy plane
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* @dev: DRM device
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* @plane: plane object to init
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* @possible_crtcs: bitmask of possible CRTCs
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* @funcs: callbacks for the new plane
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* @formats: array of supported formats (DRM_FORMAT\_\*)
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* @format_count: number of elements in @formats
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* @is_primary: plane type (primary vs overlay)
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*
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* Legacy API to initialize a DRM plane.
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*
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* New drivers should call drm_universal_plane_init() instead.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
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unsigned long possible_crtcs,
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const struct drm_plane_funcs *funcs,
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const uint32_t *formats, unsigned int format_count,
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bool is_primary)
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{
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enum drm_plane_type type;
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type = is_primary ? DRM_PLANE_TYPE_PRIMARY : DRM_PLANE_TYPE_OVERLAY;
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return drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
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formats, format_count, type, NULL);
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}
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EXPORT_SYMBOL(drm_plane_init);
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/**
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* drm_plane_cleanup - Clean up the core plane usage
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* @plane: plane to cleanup
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*
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* This function cleans up @plane and removes it from the DRM mode setting
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* core. Note that the function does *not* free the plane structure itself,
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* this is the responsibility of the caller.
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*/
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void drm_plane_cleanup(struct drm_plane *plane)
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{
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struct drm_device *dev = plane->dev;
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drm_modeset_lock_all(dev);
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kfree(plane->format_types);
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drm_mode_object_unregister(dev, &plane->base);
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BUG_ON(list_empty(&plane->head));
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/* Note that the plane_list is considered to be static; should we
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* remove the drm_plane at runtime we would have to decrement all
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* the indices on the drm_plane after us in the plane_list.
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*/
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list_del(&plane->head);
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dev->mode_config.num_total_plane--;
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if (plane->type == DRM_PLANE_TYPE_OVERLAY)
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dev->mode_config.num_overlay_plane--;
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drm_modeset_unlock_all(dev);
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WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
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if (plane->state && plane->funcs->atomic_destroy_state)
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plane->funcs->atomic_destroy_state(plane, plane->state);
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kfree(plane->name);
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memset(plane, 0, sizeof(*plane));
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}
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EXPORT_SYMBOL(drm_plane_cleanup);
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/**
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* drm_plane_from_index - find the registered plane at an index
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* @dev: DRM device
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* @idx: index of registered plane to find for
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*
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* Given a plane index, return the registered plane from DRM device's
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* list of planes with matching index.
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*/
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struct drm_plane *
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drm_plane_from_index(struct drm_device *dev, int idx)
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{
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struct drm_plane *plane;
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drm_for_each_plane(plane, dev)
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if (idx == plane->index)
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return plane;
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return NULL;
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}
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EXPORT_SYMBOL(drm_plane_from_index);
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/**
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* drm_plane_force_disable - Forcibly disable a plane
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* @plane: plane to disable
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*
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* Forces the plane to be disabled.
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*
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* Used when the plane's current framebuffer is destroyed,
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* and when restoring fbdev mode.
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*/
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void drm_plane_force_disable(struct drm_plane *plane)
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{
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int ret;
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if (!plane->fb)
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return;
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plane->old_fb = plane->fb;
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ret = plane->funcs->disable_plane(plane);
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if (ret) {
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DRM_ERROR("failed to disable plane with busy fb\n");
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plane->old_fb = NULL;
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return;
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}
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/* disconnect the plane from the fb and crtc: */
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drm_framebuffer_unreference(plane->old_fb);
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plane->old_fb = NULL;
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plane->fb = NULL;
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plane->crtc = NULL;
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}
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EXPORT_SYMBOL(drm_plane_force_disable);
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/**
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* drm_mode_plane_set_obj_prop - set the value of a property
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* @plane: drm plane object to set property value for
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* @property: property to set
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* @value: value the property should be set to
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*
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* This functions sets a given property on a given plane object. This function
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* calls the driver's ->set_property callback and changes the software state of
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* the property if the callback succeeds.
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*
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* Returns:
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* Zero on success, error code on failure.
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*/
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int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
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struct drm_property *property,
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uint64_t value)
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{
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int ret = -EINVAL;
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struct drm_mode_object *obj = &plane->base;
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if (plane->funcs->set_property)
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ret = plane->funcs->set_property(plane, property, value);
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if (!ret)
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drm_object_property_set_value(obj, property, value);
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return ret;
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}
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EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
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int drm_mode_getplane_res(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_mode_get_plane_res *plane_resp = data;
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struct drm_mode_config *config;
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struct drm_plane *plane;
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uint32_t __user *plane_ptr;
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int copied = 0;
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unsigned num_planes;
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if (!drm_core_check_feature(dev, DRIVER_MODESET))
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return -EINVAL;
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config = &dev->mode_config;
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if (file_priv->universal_planes)
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num_planes = config->num_total_plane;
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else
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num_planes = config->num_overlay_plane;
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/*
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* This ioctl is called twice, once to determine how much space is
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* needed, and the 2nd time to fill it.
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*/
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if (num_planes &&
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(plane_resp->count_planes >= num_planes)) {
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plane_ptr = (uint32_t __user *)(unsigned long)plane_resp->plane_id_ptr;
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/* Plane lists are invariant, no locking needed. */
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drm_for_each_plane(plane, dev) {
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/*
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* Unless userspace set the 'universal planes'
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* capability bit, only advertise overlays.
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*/
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if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
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!file_priv->universal_planes)
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continue;
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if (put_user(plane->base.id, plane_ptr + copied))
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return -EFAULT;
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copied++;
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}
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}
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plane_resp->count_planes = num_planes;
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return 0;
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}
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int drm_mode_getplane(struct drm_device *dev, void *data,
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struct drm_file *file_priv)
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{
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struct drm_mode_get_plane *plane_resp = data;
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struct drm_plane *plane;
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uint32_t __user *format_ptr;
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if (!drm_core_check_feature(dev, DRIVER_MODESET))
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return -EINVAL;
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plane = drm_plane_find(dev, plane_resp->plane_id);
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if (!plane)
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return -ENOENT;
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drm_modeset_lock(&plane->mutex, NULL);
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if (plane->crtc)
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plane_resp->crtc_id = plane->crtc->base.id;
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else
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plane_resp->crtc_id = 0;
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if (plane->fb)
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plane_resp->fb_id = plane->fb->base.id;
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else
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plane_resp->fb_id = 0;
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drm_modeset_unlock(&plane->mutex);
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plane_resp->plane_id = plane->base.id;
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plane_resp->possible_crtcs = plane->possible_crtcs;
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plane_resp->gamma_size = 0;
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/*
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* This ioctl is called twice, once to determine how much space is
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* needed, and the 2nd time to fill it.
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*/
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if (plane->format_count &&
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(plane_resp->count_format_types >= plane->format_count)) {
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format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
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if (copy_to_user(format_ptr,
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plane->format_types,
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sizeof(uint32_t) * plane->format_count)) {
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return -EFAULT;
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}
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}
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plane_resp->count_format_types = plane->format_count;
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return 0;
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}
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int drm_plane_check_pixel_format(const struct drm_plane *plane, u32 format)
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{
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unsigned int i;
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for (i = 0; i < plane->format_count; i++) {
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if (format == plane->format_types[i])
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return 0;
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}
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return -EINVAL;
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}
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/*
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* setplane_internal - setplane handler for internal callers
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*
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* Note that we assume an extra reference has already been taken on fb. If the
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* update fails, this reference will be dropped before return; if it succeeds,
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* the previous framebuffer (if any) will be unreferenced instead.
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*
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* src_{x,y,w,h} are provided in 16.16 fixed point format
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*/
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static int __setplane_internal(struct drm_plane *plane,
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struct drm_crtc *crtc,
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struct drm_framebuffer *fb,
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int32_t crtc_x, int32_t crtc_y,
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uint32_t crtc_w, uint32_t crtc_h,
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/* src_{x,y,w,h} values are 16.16 fixed point */
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uint32_t src_x, uint32_t src_y,
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uint32_t src_w, uint32_t src_h)
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{
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int ret = 0;
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/* No fb means shut it down */
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if (!fb) {
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plane->old_fb = plane->fb;
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ret = plane->funcs->disable_plane(plane);
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if (!ret) {
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plane->crtc = NULL;
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plane->fb = NULL;
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} else {
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plane->old_fb = NULL;
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}
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goto out;
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}
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/* Check whether this plane is usable on this CRTC */
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if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
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DRM_DEBUG_KMS("Invalid crtc for plane\n");
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ret = -EINVAL;
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goto out;
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}
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/* Check whether this plane supports the fb pixel format. */
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ret = drm_plane_check_pixel_format(plane, fb->pixel_format);
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if (ret) {
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char *format_name = drm_get_format_name(fb->pixel_format);
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DRM_DEBUG_KMS("Invalid pixel format %s\n", format_name);
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kfree(format_name);
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goto out;
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}
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/* Give drivers some help against integer overflows */
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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);
|
|
ret = -ERANGE;
|
|
goto out;
|
|
}
|
|
|
|
ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb);
|
|
if (ret)
|
|
goto out;
|
|
|
|
plane->old_fb = plane->fb;
|
|
ret = plane->funcs->update_plane(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
src_x, src_y, src_w, src_h);
|
|
if (!ret) {
|
|
plane->crtc = crtc;
|
|
plane->fb = fb;
|
|
fb = NULL;
|
|
} else {
|
|
plane->old_fb = NULL;
|
|
}
|
|
|
|
out:
|
|
if (fb)
|
|
drm_framebuffer_unreference(fb);
|
|
if (plane->old_fb)
|
|
drm_framebuffer_unreference(plane->old_fb);
|
|
plane->old_fb = NULL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int setplane_internal(struct drm_plane *plane,
|
|
struct drm_crtc *crtc,
|
|
struct drm_framebuffer *fb,
|
|
int32_t crtc_x, int32_t crtc_y,
|
|
uint32_t crtc_w, uint32_t crtc_h,
|
|
/* src_{x,y,w,h} values are 16.16 fixed point */
|
|
uint32_t src_x, uint32_t src_y,
|
|
uint32_t src_w, uint32_t src_h)
|
|
{
|
|
int ret;
|
|
|
|
drm_modeset_lock_all(plane->dev);
|
|
ret = __setplane_internal(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
src_x, src_y, src_w, src_h);
|
|
drm_modeset_unlock_all(plane->dev);
|
|
|
|
return ret;
|
|
}
|
|
|
|
int drm_mode_setplane(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_set_plane *plane_req = data;
|
|
struct drm_plane *plane;
|
|
struct drm_crtc *crtc = NULL;
|
|
struct drm_framebuffer *fb = NULL;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
/*
|
|
* First, find the plane, crtc, and fb objects. If not available,
|
|
* we don't bother to call the driver.
|
|
*/
|
|
plane = drm_plane_find(dev, plane_req->plane_id);
|
|
if (!plane) {
|
|
DRM_DEBUG_KMS("Unknown plane ID %d\n",
|
|
plane_req->plane_id);
|
|
return -ENOENT;
|
|
}
|
|
|
|
if (plane_req->fb_id) {
|
|
fb = drm_framebuffer_lookup(dev, plane_req->fb_id);
|
|
if (!fb) {
|
|
DRM_DEBUG_KMS("Unknown framebuffer ID %d\n",
|
|
plane_req->fb_id);
|
|
return -ENOENT;
|
|
}
|
|
|
|
crtc = drm_crtc_find(dev, plane_req->crtc_id);
|
|
if (!crtc) {
|
|
DRM_DEBUG_KMS("Unknown crtc ID %d\n",
|
|
plane_req->crtc_id);
|
|
return -ENOENT;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* setplane_internal will take care of deref'ing either the old or new
|
|
* framebuffer depending on success.
|
|
*/
|
|
return setplane_internal(plane, crtc, fb,
|
|
plane_req->crtc_x, plane_req->crtc_y,
|
|
plane_req->crtc_w, plane_req->crtc_h,
|
|
plane_req->src_x, plane_req->src_y,
|
|
plane_req->src_w, plane_req->src_h);
|
|
}
|
|
|
|
static int drm_mode_cursor_universal(struct drm_crtc *crtc,
|
|
struct drm_mode_cursor2 *req,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_framebuffer *fb = NULL;
|
|
struct drm_mode_fb_cmd2 fbreq = {
|
|
.width = req->width,
|
|
.height = req->height,
|
|
.pixel_format = DRM_FORMAT_ARGB8888,
|
|
.pitches = { req->width * 4 },
|
|
.handles = { req->handle },
|
|
};
|
|
int32_t crtc_x, crtc_y;
|
|
uint32_t crtc_w = 0, crtc_h = 0;
|
|
uint32_t src_w = 0, src_h = 0;
|
|
int ret = 0;
|
|
|
|
BUG_ON(!crtc->cursor);
|
|
WARN_ON(crtc->cursor->crtc != crtc && crtc->cursor->crtc != NULL);
|
|
|
|
/*
|
|
* Obtain fb we'll be using (either new or existing) and take an extra
|
|
* reference to it if fb != null. setplane will take care of dropping
|
|
* the reference if the plane update fails.
|
|
*/
|
|
if (req->flags & DRM_MODE_CURSOR_BO) {
|
|
if (req->handle) {
|
|
fb = drm_internal_framebuffer_create(dev, &fbreq, file_priv);
|
|
if (IS_ERR(fb)) {
|
|
DRM_DEBUG_KMS("failed to wrap cursor buffer in drm framebuffer\n");
|
|
return PTR_ERR(fb);
|
|
}
|
|
fb->hot_x = req->hot_x;
|
|
fb->hot_y = req->hot_y;
|
|
} else {
|
|
fb = NULL;
|
|
}
|
|
} else {
|
|
fb = crtc->cursor->fb;
|
|
if (fb)
|
|
drm_framebuffer_reference(fb);
|
|
}
|
|
|
|
if (req->flags & DRM_MODE_CURSOR_MOVE) {
|
|
crtc_x = req->x;
|
|
crtc_y = req->y;
|
|
} else {
|
|
crtc_x = crtc->cursor_x;
|
|
crtc_y = crtc->cursor_y;
|
|
}
|
|
|
|
if (fb) {
|
|
crtc_w = fb->width;
|
|
crtc_h = fb->height;
|
|
src_w = fb->width << 16;
|
|
src_h = fb->height << 16;
|
|
}
|
|
|
|
/*
|
|
* setplane_internal will take care of deref'ing either the old or new
|
|
* framebuffer depending on success.
|
|
*/
|
|
ret = __setplane_internal(crtc->cursor, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
0, 0, src_w, src_h);
|
|
|
|
/* Update successful; save new cursor position, if necessary */
|
|
if (ret == 0 && req->flags & DRM_MODE_CURSOR_MOVE) {
|
|
crtc->cursor_x = req->x;
|
|
crtc->cursor_y = req->y;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int drm_mode_cursor_common(struct drm_device *dev,
|
|
struct drm_mode_cursor2 *req,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_crtc *crtc;
|
|
int ret = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
|
|
return -EINVAL;
|
|
|
|
crtc = drm_crtc_find(dev, req->crtc_id);
|
|
if (!crtc) {
|
|
DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
|
|
return -ENOENT;
|
|
}
|
|
|
|
/*
|
|
* If this crtc has a universal cursor plane, call that plane's update
|
|
* handler rather than using legacy cursor handlers.
|
|
*/
|
|
drm_modeset_lock_crtc(crtc, crtc->cursor);
|
|
if (crtc->cursor) {
|
|
ret = drm_mode_cursor_universal(crtc, req, file_priv);
|
|
goto out;
|
|
}
|
|
|
|
if (req->flags & DRM_MODE_CURSOR_BO) {
|
|
if (!crtc->funcs->cursor_set && !crtc->funcs->cursor_set2) {
|
|
ret = -ENXIO;
|
|
goto out;
|
|
}
|
|
/* Turns off the cursor if handle is 0 */
|
|
if (crtc->funcs->cursor_set2)
|
|
ret = crtc->funcs->cursor_set2(crtc, file_priv, req->handle,
|
|
req->width, req->height, req->hot_x, req->hot_y);
|
|
else
|
|
ret = crtc->funcs->cursor_set(crtc, file_priv, req->handle,
|
|
req->width, req->height);
|
|
}
|
|
|
|
if (req->flags & DRM_MODE_CURSOR_MOVE) {
|
|
if (crtc->funcs->cursor_move) {
|
|
ret = crtc->funcs->cursor_move(crtc, req->x, req->y);
|
|
} else {
|
|
ret = -EFAULT;
|
|
goto out;
|
|
}
|
|
}
|
|
out:
|
|
drm_modeset_unlock_crtc(crtc);
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
int drm_mode_cursor_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_cursor *req = data;
|
|
struct drm_mode_cursor2 new_req;
|
|
|
|
memcpy(&new_req, req, sizeof(struct drm_mode_cursor));
|
|
new_req.hot_x = new_req.hot_y = 0;
|
|
|
|
return drm_mode_cursor_common(dev, &new_req, file_priv);
|
|
}
|
|
|
|
/*
|
|
* Set the cursor configuration based on user request. This implements the 2nd
|
|
* version of the cursor ioctl, which allows userspace to additionally specify
|
|
* the hotspot of the pointer.
|
|
*/
|
|
int drm_mode_cursor2_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_cursor2 *req = data;
|
|
|
|
return drm_mode_cursor_common(dev, req, file_priv);
|
|
}
|
|
|
|
int drm_mode_page_flip_ioctl(struct drm_device *dev,
|
|
void *data, struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_crtc_page_flip_target *page_flip = data;
|
|
struct drm_crtc *crtc;
|
|
struct drm_framebuffer *fb = NULL;
|
|
struct drm_pending_vblank_event *e = NULL;
|
|
u32 target_vblank = page_flip->sequence;
|
|
int ret = -EINVAL;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EINVAL;
|
|
|
|
if (page_flip->flags & ~DRM_MODE_PAGE_FLIP_FLAGS)
|
|
return -EINVAL;
|
|
|
|
if (page_flip->sequence != 0 && !(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET))
|
|
return -EINVAL;
|
|
|
|
/* Only one of the DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE/RELATIVE flags
|
|
* can be specified
|
|
*/
|
|
if ((page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) == DRM_MODE_PAGE_FLIP_TARGET)
|
|
return -EINVAL;
|
|
|
|
if ((page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC) && !dev->mode_config.async_page_flip)
|
|
return -EINVAL;
|
|
|
|
crtc = drm_crtc_find(dev, page_flip->crtc_id);
|
|
if (!crtc)
|
|
return -ENOENT;
|
|
|
|
if (crtc->funcs->page_flip_target) {
|
|
u32 current_vblank;
|
|
int r;
|
|
|
|
r = drm_crtc_vblank_get(crtc);
|
|
if (r)
|
|
return r;
|
|
|
|
current_vblank = drm_crtc_vblank_count(crtc);
|
|
|
|
switch (page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET) {
|
|
case DRM_MODE_PAGE_FLIP_TARGET_ABSOLUTE:
|
|
if ((int)(target_vblank - current_vblank) > 1) {
|
|
DRM_DEBUG("Invalid absolute flip target %u, "
|
|
"must be <= %u\n", target_vblank,
|
|
current_vblank + 1);
|
|
drm_crtc_vblank_put(crtc);
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
case DRM_MODE_PAGE_FLIP_TARGET_RELATIVE:
|
|
if (target_vblank != 0 && target_vblank != 1) {
|
|
DRM_DEBUG("Invalid relative flip target %u, "
|
|
"must be 0 or 1\n", target_vblank);
|
|
drm_crtc_vblank_put(crtc);
|
|
return -EINVAL;
|
|
}
|
|
target_vblank += current_vblank;
|
|
break;
|
|
default:
|
|
target_vblank = current_vblank +
|
|
!(page_flip->flags & DRM_MODE_PAGE_FLIP_ASYNC);
|
|
break;
|
|
}
|
|
} else if (crtc->funcs->page_flip == NULL ||
|
|
(page_flip->flags & DRM_MODE_PAGE_FLIP_TARGET)) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
drm_modeset_lock_crtc(crtc, crtc->primary);
|
|
if (crtc->primary->fb == NULL) {
|
|
/* The framebuffer is currently unbound, presumably
|
|
* due to a hotplug event, that userspace has not
|
|
* yet discovered.
|
|
*/
|
|
ret = -EBUSY;
|
|
goto out;
|
|
}
|
|
|
|
fb = drm_framebuffer_lookup(dev, page_flip->fb_id);
|
|
if (!fb) {
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
if (crtc->state) {
|
|
const struct drm_plane_state *state = crtc->primary->state;
|
|
|
|
ret = drm_framebuffer_check_src_coords(state->src_x,
|
|
state->src_y,
|
|
state->src_w,
|
|
state->src_h,
|
|
fb);
|
|
} else {
|
|
ret = drm_crtc_check_viewport(crtc, crtc->x, crtc->y, &crtc->mode, fb);
|
|
}
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (crtc->primary->fb->pixel_format != fb->pixel_format) {
|
|
DRM_DEBUG_KMS("Page flip is not allowed to change frame buffer format.\n");
|
|
ret = -EINVAL;
|
|
goto out;
|
|
}
|
|
|
|
if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT) {
|
|
e = kzalloc(sizeof *e, GFP_KERNEL);
|
|
if (!e) {
|
|
ret = -ENOMEM;
|
|
goto out;
|
|
}
|
|
e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
|
|
e->event.base.length = sizeof(e->event);
|
|
e->event.user_data = page_flip->user_data;
|
|
ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
|
|
if (ret) {
|
|
kfree(e);
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
crtc->primary->old_fb = crtc->primary->fb;
|
|
if (crtc->funcs->page_flip_target)
|
|
ret = crtc->funcs->page_flip_target(crtc, fb, e,
|
|
page_flip->flags,
|
|
target_vblank);
|
|
else
|
|
ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags);
|
|
if (ret) {
|
|
if (page_flip->flags & DRM_MODE_PAGE_FLIP_EVENT)
|
|
drm_event_cancel_free(dev, &e->base);
|
|
/* Keep the old fb, don't unref it. */
|
|
crtc->primary->old_fb = NULL;
|
|
} else {
|
|
crtc->primary->fb = fb;
|
|
/* Unref only the old framebuffer. */
|
|
fb = NULL;
|
|
}
|
|
|
|
out:
|
|
if (ret && crtc->funcs->page_flip_target)
|
|
drm_crtc_vblank_put(crtc);
|
|
if (fb)
|
|
drm_framebuffer_unreference(fb);
|
|
if (crtc->primary->old_fb)
|
|
drm_framebuffer_unreference(crtc->primary->old_fb);
|
|
crtc->primary->old_fb = NULL;
|
|
drm_modeset_unlock_crtc(crtc);
|
|
|
|
return ret;
|
|
}
|