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![Thomas Zimmermann](/assets/img/avatar_default.png)
Provide drm_univeral_plane_alloc() to allocate and initialize a plane. Code for non-atomic drivers uses this pattern. Convert them to the new function. The modeset helpers contain a quirk for handling their color formats differently. Set the flag outside plane allocation. The new function is already deprecated to some extend. Drivers should rather use drmm_univeral_plane_alloc() or drm_universal_plane_init(). v2: * kerneldoc fixes (Javier) * grammar fixes in commit message Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by: Javier Martinez Canillas <javierm@redhat.com> Reviewed-by: Lyude Paul <lyude@redhat.com> # nouveau Link: https://patchwork.freedesktop.org/patch/msgid/20220909105947.6487-3-tzimmermann@suse.de
1579 lines
45 KiB
C
1579 lines
45 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 <linux/slab.h>
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#include <linux/uaccess.h>
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#include <drm/drm_plane.h>
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#include <drm/drm_drv.h>
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#include <drm/drm_print.h>
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#include <drm/drm_framebuffer.h>
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#include <drm/drm_file.h>
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#include <drm/drm_crtc.h>
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#include <drm/drm_fourcc.h>
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#include <drm/drm_managed.h>
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#include <drm/drm_vblank.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 overlaid 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 area 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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* Each plane has a type, see enum drm_plane_type. A plane can be compatible
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* with multiple CRTCs, see &drm_plane.possible_crtcs.
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*
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* Each CRTC must have a unique primary plane userspace can attach to enable
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* the CRTC. In other words, userspace must be able to attach a different
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* primary plane to each CRTC at the same time. Primary planes can still be
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* compatible with multiple CRTCs. There must be exactly as many primary planes
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* as there are CRTCs.
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*
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* Legacy uAPI doesn't expose the primary and cursor planes directly. DRM core
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* relies on the driver to set the primary and optionally the cursor plane used
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* for legacy IOCTLs. This is done by calling drm_crtc_init_with_planes(). All
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* drivers must provide one primary plane per CRTC to avoid surprising legacy
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* userspace too much.
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*/
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/**
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* DOC: standard plane properties
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*
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* DRM planes have a few standardized properties:
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*
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* type:
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* Immutable property describing the type of the plane.
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*
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* For user-space which has enabled the &DRM_CLIENT_CAP_ATOMIC capability,
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* the plane type is just a hint and is mostly superseded by atomic
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* test-only commits. The type hint can still be used to come up more
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* easily with a plane configuration accepted by the driver.
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*
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* The value of this property can be one of the following:
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*
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* "Primary":
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* To light up a CRTC, attaching a primary plane is the most likely to
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* work if it covers the whole CRTC and doesn't have scaling or
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* cropping set up.
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*
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* Drivers may support more features for the primary plane, user-space
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* can find out with test-only atomic commits.
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*
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* Some primary planes are implicitly used by the kernel in the legacy
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* IOCTLs &DRM_IOCTL_MODE_SETCRTC and &DRM_IOCTL_MODE_PAGE_FLIP.
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* Therefore user-space must not mix explicit usage of any primary
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* plane (e.g. through an atomic commit) with these legacy IOCTLs.
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*
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* "Cursor":
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* To enable this plane, using a framebuffer configured without scaling
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* or cropping and with the following properties is the most likely to
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* work:
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*
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* - If the driver provides the capabilities &DRM_CAP_CURSOR_WIDTH and
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* &DRM_CAP_CURSOR_HEIGHT, create the framebuffer with this size.
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* Otherwise, create a framebuffer with the size 64x64.
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* - If the driver doesn't support modifiers, create a framebuffer with
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* a linear layout. Otherwise, use the IN_FORMATS plane property.
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*
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* Drivers may support more features for the cursor plane, user-space
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* can find out with test-only atomic commits.
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*
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* Some cursor planes are implicitly used by the kernel in the legacy
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* IOCTLs &DRM_IOCTL_MODE_CURSOR and &DRM_IOCTL_MODE_CURSOR2.
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* Therefore user-space must not mix explicit usage of any cursor
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* plane (e.g. through an atomic commit) with these legacy IOCTLs.
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*
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* Some drivers may support cursors even if no cursor plane is exposed.
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* In this case, the legacy cursor IOCTLs can be used to configure the
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* cursor.
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*
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* "Overlay":
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* Neither primary nor cursor.
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*
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* Overlay planes are the only planes exposed when the
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* &DRM_CLIENT_CAP_UNIVERSAL_PLANES capability is disabled.
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*
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* IN_FORMATS:
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* Blob property which contains the set of buffer format and modifier
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* pairs supported by this plane. The blob is a struct
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* drm_format_modifier_blob. Without this property the plane doesn't
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* support buffers with modifiers. Userspace cannot change this property.
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*
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* Note that userspace can check the &DRM_CAP_ADDFB2_MODIFIERS driver
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* capability for general modifier support. If this flag is set then every
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* plane will have the IN_FORMATS property, even when it only supports
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* DRM_FORMAT_MOD_LINEAR. Before linux kernel release v5.1 there have been
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* various bugs in this area with inconsistencies between the capability
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* flag and per-plane properties.
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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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static inline u32 *
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formats_ptr(struct drm_format_modifier_blob *blob)
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{
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return (u32 *)(((char *)blob) + blob->formats_offset);
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}
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static inline struct drm_format_modifier *
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modifiers_ptr(struct drm_format_modifier_blob *blob)
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{
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return (struct drm_format_modifier *)(((char *)blob) + blob->modifiers_offset);
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}
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static int create_in_format_blob(struct drm_device *dev, struct drm_plane *plane)
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{
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const struct drm_mode_config *config = &dev->mode_config;
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struct drm_property_blob *blob;
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struct drm_format_modifier *mod;
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size_t blob_size, formats_size, modifiers_size;
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struct drm_format_modifier_blob *blob_data;
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unsigned int i, j;
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formats_size = sizeof(__u32) * plane->format_count;
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if (WARN_ON(!formats_size)) {
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/* 0 formats are never expected */
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return 0;
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}
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modifiers_size =
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sizeof(struct drm_format_modifier) * plane->modifier_count;
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blob_size = sizeof(struct drm_format_modifier_blob);
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/* Modifiers offset is a pointer to a struct with a 64 bit field so it
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* should be naturally aligned to 8B.
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*/
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BUILD_BUG_ON(sizeof(struct drm_format_modifier_blob) % 8);
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blob_size += ALIGN(formats_size, 8);
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blob_size += modifiers_size;
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blob = drm_property_create_blob(dev, blob_size, NULL);
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if (IS_ERR(blob))
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return -1;
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blob_data = blob->data;
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blob_data->version = FORMAT_BLOB_CURRENT;
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blob_data->count_formats = plane->format_count;
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blob_data->formats_offset = sizeof(struct drm_format_modifier_blob);
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blob_data->count_modifiers = plane->modifier_count;
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blob_data->modifiers_offset =
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ALIGN(blob_data->formats_offset + formats_size, 8);
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memcpy(formats_ptr(blob_data), plane->format_types, formats_size);
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mod = modifiers_ptr(blob_data);
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for (i = 0; i < plane->modifier_count; i++) {
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for (j = 0; j < plane->format_count; j++) {
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if (!plane->funcs->format_mod_supported ||
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plane->funcs->format_mod_supported(plane,
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plane->format_types[j],
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plane->modifiers[i])) {
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mod->formats |= 1ULL << j;
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}
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}
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mod->modifier = plane->modifiers[i];
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mod->offset = 0;
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mod->pad = 0;
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mod++;
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}
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drm_object_attach_property(&plane->base, config->modifiers_property,
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blob->base.id);
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return 0;
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}
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__printf(9, 0)
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static int __drm_universal_plane_init(struct drm_device *dev,
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struct drm_plane *plane,
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uint32_t possible_crtcs,
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const struct drm_plane_funcs *funcs,
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const uint32_t *formats,
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unsigned int format_count,
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const uint64_t *format_modifiers,
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enum drm_plane_type type,
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const char *name, va_list ap)
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{
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struct drm_mode_config *config = &dev->mode_config;
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static const uint64_t default_modifiers[] = {
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DRM_FORMAT_MOD_LINEAR,
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};
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unsigned int format_modifier_count = 0;
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int ret;
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/* plane index is used with 32bit bitmasks */
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if (WARN_ON(config->num_total_plane >= 32))
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return -EINVAL;
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/*
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* First driver to need more than 64 formats needs to fix this. Each
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* format is encoded as a bit and the current code only supports a u64.
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*/
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if (WARN_ON(format_count > 64))
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return -EINVAL;
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WARN_ON(drm_drv_uses_atomic_modeset(dev) &&
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(!funcs->atomic_destroy_state ||
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!funcs->atomic_duplicate_state));
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ret = drm_mode_object_add(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 (format_modifiers) {
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const uint64_t *temp_modifiers = format_modifiers;
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while (*temp_modifiers++ != DRM_FORMAT_MOD_INVALID)
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format_modifier_count++;
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} else {
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if (!dev->mode_config.fb_modifiers_not_supported) {
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format_modifiers = default_modifiers;
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format_modifier_count = ARRAY_SIZE(default_modifiers);
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}
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}
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/* autoset the cap and check for consistency across all planes */
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drm_WARN_ON(dev, config->fb_modifiers_not_supported &&
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format_modifier_count);
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plane->modifier_count = format_modifier_count;
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plane->modifiers = kmalloc_array(format_modifier_count,
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sizeof(format_modifiers[0]),
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GFP_KERNEL);
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if (format_modifier_count && !plane->modifiers) {
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DRM_DEBUG_KMS("out of memory when allocating plane\n");
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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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if (name) {
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plane->name = kvasprintf(GFP_KERNEL, name, 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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kfree(plane->modifiers);
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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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memcpy(plane->modifiers, format_modifiers,
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format_modifier_count * sizeof(format_modifiers[0]));
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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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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_in_fence_fd, -1);
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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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if (format_modifier_count)
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create_in_format_blob(dev, plane);
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return 0;
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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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* @format_modifiers: array of struct drm_format modifiers terminated by
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* DRM_FORMAT_MOD_INVALID
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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. The &drm_plane_funcs.destroy hook
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* should call drm_plane_cleanup() and kfree() the plane structure. The plane
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* structure should not be allocated with devm_kzalloc().
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*
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* Note: consider using drmm_universal_plane_alloc() instead of
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* drm_universal_plane_init() to let the DRM managed resource infrastructure
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* take care of cleanup and deallocation.
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*
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* Drivers that only support the DRM_FORMAT_MOD_LINEAR modifier support may set
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* @format_modifiers to NULL. The plane will advertise the linear modifier.
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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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uint32_t 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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const uint64_t *format_modifiers,
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enum drm_plane_type type,
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const char *name, ...)
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{
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va_list ap;
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int ret;
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WARN_ON(!funcs->destroy);
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va_start(ap, name);
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ret = __drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
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formats, format_count, format_modifiers,
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type, name, ap);
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va_end(ap);
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return ret;
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}
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EXPORT_SYMBOL(drm_universal_plane_init);
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static void drmm_universal_plane_alloc_release(struct drm_device *dev, void *ptr)
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{
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struct drm_plane *plane = ptr;
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if (WARN_ON(!plane->dev))
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return;
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drm_plane_cleanup(plane);
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}
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void *__drmm_universal_plane_alloc(struct drm_device *dev, size_t size,
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size_t offset, uint32_t 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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const uint64_t *format_modifiers,
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enum drm_plane_type type,
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const char *name, ...)
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{
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void *container;
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struct drm_plane *plane;
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va_list ap;
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int ret;
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if (WARN_ON(!funcs || funcs->destroy))
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return ERR_PTR(-EINVAL);
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container = drmm_kzalloc(dev, size, GFP_KERNEL);
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if (!container)
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return ERR_PTR(-ENOMEM);
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plane = container + offset;
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va_start(ap, name);
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ret = __drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
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formats, format_count, format_modifiers,
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type, name, ap);
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va_end(ap);
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if (ret)
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return ERR_PTR(ret);
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ret = drmm_add_action_or_reset(dev, drmm_universal_plane_alloc_release,
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plane);
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if (ret)
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return ERR_PTR(ret);
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return container;
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}
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EXPORT_SYMBOL(__drmm_universal_plane_alloc);
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void *__drm_universal_plane_alloc(struct drm_device *dev, size_t size,
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size_t offset, uint32_t 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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const uint64_t *format_modifiers,
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enum drm_plane_type type,
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const char *name, ...)
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{
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void *container;
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struct drm_plane *plane;
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va_list ap;
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int ret;
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if (drm_WARN_ON(dev, !funcs))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
container = kzalloc(size, GFP_KERNEL);
|
|
if (!container)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
plane = container + offset;
|
|
|
|
va_start(ap, name);
|
|
ret = __drm_universal_plane_init(dev, plane, possible_crtcs, funcs,
|
|
formats, format_count, format_modifiers,
|
|
type, name, ap);
|
|
va_end(ap);
|
|
if (ret)
|
|
goto err_kfree;
|
|
|
|
return container;
|
|
|
|
err_kfree:
|
|
kfree(container);
|
|
return ERR_PTR(ret);
|
|
}
|
|
EXPORT_SYMBOL(__drm_universal_plane_alloc);
|
|
|
|
int drm_plane_register_all(struct drm_device *dev)
|
|
{
|
|
unsigned int num_planes = 0;
|
|
unsigned int num_zpos = 0;
|
|
struct drm_plane *plane;
|
|
int ret = 0;
|
|
|
|
drm_for_each_plane(plane, dev) {
|
|
if (plane->funcs->late_register)
|
|
ret = plane->funcs->late_register(plane);
|
|
if (ret)
|
|
return ret;
|
|
|
|
if (plane->zpos_property)
|
|
num_zpos++;
|
|
num_planes++;
|
|
}
|
|
|
|
drm_WARN(dev, num_zpos && num_planes != num_zpos,
|
|
"Mixing planes with and without zpos property is invalid\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
void drm_plane_unregister_all(struct drm_device *dev)
|
|
{
|
|
struct drm_plane *plane;
|
|
|
|
drm_for_each_plane(plane, dev) {
|
|
if (plane->funcs->early_unregister)
|
|
plane->funcs->early_unregister(plane);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* drm_plane_cleanup - Clean up the core plane usage
|
|
* @plane: plane to cleanup
|
|
*
|
|
* This function cleans up @plane and removes it from the DRM mode setting
|
|
* core. Note that the function does *not* free the plane structure itself,
|
|
* this is the responsibility of the caller.
|
|
*/
|
|
void drm_plane_cleanup(struct drm_plane *plane)
|
|
{
|
|
struct drm_device *dev = plane->dev;
|
|
|
|
drm_modeset_lock_fini(&plane->mutex);
|
|
|
|
kfree(plane->format_types);
|
|
kfree(plane->modifiers);
|
|
drm_mode_object_unregister(dev, &plane->base);
|
|
|
|
BUG_ON(list_empty(&plane->head));
|
|
|
|
/* Note that the plane_list is considered to be static; should we
|
|
* remove the drm_plane at runtime we would have to decrement all
|
|
* the indices on the drm_plane after us in the plane_list.
|
|
*/
|
|
|
|
list_del(&plane->head);
|
|
dev->mode_config.num_total_plane--;
|
|
|
|
WARN_ON(plane->state && !plane->funcs->atomic_destroy_state);
|
|
if (plane->state && plane->funcs->atomic_destroy_state)
|
|
plane->funcs->atomic_destroy_state(plane, plane->state);
|
|
|
|
kfree(plane->name);
|
|
|
|
memset(plane, 0, sizeof(*plane));
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_cleanup);
|
|
|
|
/**
|
|
* drm_plane_from_index - find the registered plane at an index
|
|
* @dev: DRM device
|
|
* @idx: index of registered plane to find for
|
|
*
|
|
* Given a plane index, return the registered plane from DRM device's
|
|
* list of planes with matching index. This is the inverse of drm_plane_index().
|
|
*/
|
|
struct drm_plane *
|
|
drm_plane_from_index(struct drm_device *dev, int idx)
|
|
{
|
|
struct drm_plane *plane;
|
|
|
|
drm_for_each_plane(plane, dev)
|
|
if (idx == plane->index)
|
|
return plane;
|
|
|
|
return NULL;
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_from_index);
|
|
|
|
/**
|
|
* drm_plane_force_disable - Forcibly disable a plane
|
|
* @plane: plane to disable
|
|
*
|
|
* Forces the plane to be disabled.
|
|
*
|
|
* Used when the plane's current framebuffer is destroyed,
|
|
* and when restoring fbdev mode.
|
|
*
|
|
* Note that this function is not suitable for atomic drivers, since it doesn't
|
|
* wire through the lock acquisition context properly and hence can't handle
|
|
* retries or driver private locks. You probably want to use
|
|
* drm_atomic_helper_disable_plane() or
|
|
* drm_atomic_helper_disable_planes_on_crtc() instead.
|
|
*/
|
|
void drm_plane_force_disable(struct drm_plane *plane)
|
|
{
|
|
int ret;
|
|
|
|
if (!plane->fb)
|
|
return;
|
|
|
|
WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));
|
|
|
|
plane->old_fb = plane->fb;
|
|
ret = plane->funcs->disable_plane(plane, NULL);
|
|
if (ret) {
|
|
DRM_ERROR("failed to disable plane with busy fb\n");
|
|
plane->old_fb = NULL;
|
|
return;
|
|
}
|
|
/* disconnect the plane from the fb and crtc: */
|
|
drm_framebuffer_put(plane->old_fb);
|
|
plane->old_fb = NULL;
|
|
plane->fb = NULL;
|
|
plane->crtc = NULL;
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_force_disable);
|
|
|
|
/**
|
|
* drm_mode_plane_set_obj_prop - set the value of a property
|
|
* @plane: drm plane object to set property value for
|
|
* @property: property to set
|
|
* @value: value the property should be set to
|
|
*
|
|
* This functions sets a given property on a given plane object. This function
|
|
* calls the driver's ->set_property callback and changes the software state of
|
|
* the property if the callback succeeds.
|
|
*
|
|
* Returns:
|
|
* Zero on success, error code on failure.
|
|
*/
|
|
int drm_mode_plane_set_obj_prop(struct drm_plane *plane,
|
|
struct drm_property *property,
|
|
uint64_t value)
|
|
{
|
|
int ret = -EINVAL;
|
|
struct drm_mode_object *obj = &plane->base;
|
|
|
|
if (plane->funcs->set_property)
|
|
ret = plane->funcs->set_property(plane, property, value);
|
|
if (!ret)
|
|
drm_object_property_set_value(obj, property, value);
|
|
|
|
return ret;
|
|
}
|
|
EXPORT_SYMBOL(drm_mode_plane_set_obj_prop);
|
|
|
|
int drm_mode_getplane_res(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_get_plane_res *plane_resp = data;
|
|
struct drm_plane *plane;
|
|
uint32_t __user *plane_ptr;
|
|
int count = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EOPNOTSUPP;
|
|
|
|
plane_ptr = u64_to_user_ptr(plane_resp->plane_id_ptr);
|
|
|
|
/*
|
|
* This ioctl is called twice, once to determine how much space is
|
|
* needed, and the 2nd time to fill it.
|
|
*/
|
|
drm_for_each_plane(plane, dev) {
|
|
/*
|
|
* Unless userspace set the 'universal planes'
|
|
* capability bit, only advertise overlays.
|
|
*/
|
|
if (plane->type != DRM_PLANE_TYPE_OVERLAY &&
|
|
!file_priv->universal_planes)
|
|
continue;
|
|
|
|
if (drm_lease_held(file_priv, plane->base.id)) {
|
|
if (count < plane_resp->count_planes &&
|
|
put_user(plane->base.id, plane_ptr + count))
|
|
return -EFAULT;
|
|
count++;
|
|
}
|
|
}
|
|
plane_resp->count_planes = count;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int drm_mode_getplane(struct drm_device *dev, void *data,
|
|
struct drm_file *file_priv)
|
|
{
|
|
struct drm_mode_get_plane *plane_resp = data;
|
|
struct drm_plane *plane;
|
|
uint32_t __user *format_ptr;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EOPNOTSUPP;
|
|
|
|
plane = drm_plane_find(dev, file_priv, plane_resp->plane_id);
|
|
if (!plane)
|
|
return -ENOENT;
|
|
|
|
drm_modeset_lock(&plane->mutex, NULL);
|
|
if (plane->state && plane->state->crtc && drm_lease_held(file_priv, plane->state->crtc->base.id))
|
|
plane_resp->crtc_id = plane->state->crtc->base.id;
|
|
else if (!plane->state && plane->crtc && drm_lease_held(file_priv, plane->crtc->base.id))
|
|
plane_resp->crtc_id = plane->crtc->base.id;
|
|
else
|
|
plane_resp->crtc_id = 0;
|
|
|
|
if (plane->state && plane->state->fb)
|
|
plane_resp->fb_id = plane->state->fb->base.id;
|
|
else if (!plane->state && plane->fb)
|
|
plane_resp->fb_id = plane->fb->base.id;
|
|
else
|
|
plane_resp->fb_id = 0;
|
|
drm_modeset_unlock(&plane->mutex);
|
|
|
|
plane_resp->plane_id = plane->base.id;
|
|
plane_resp->possible_crtcs = drm_lease_filter_crtcs(file_priv,
|
|
plane->possible_crtcs);
|
|
|
|
plane_resp->gamma_size = 0;
|
|
|
|
/*
|
|
* This ioctl is called twice, once to determine how much space is
|
|
* needed, and the 2nd time to fill it.
|
|
*/
|
|
if (plane->format_count &&
|
|
(plane_resp->count_format_types >= plane->format_count)) {
|
|
format_ptr = (uint32_t __user *)(unsigned long)plane_resp->format_type_ptr;
|
|
if (copy_to_user(format_ptr,
|
|
plane->format_types,
|
|
sizeof(uint32_t) * plane->format_count)) {
|
|
return -EFAULT;
|
|
}
|
|
}
|
|
plane_resp->count_format_types = plane->format_count;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int drm_plane_check_pixel_format(struct drm_plane *plane,
|
|
u32 format, u64 modifier)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < plane->format_count; i++) {
|
|
if (format == plane->format_types[i])
|
|
break;
|
|
}
|
|
if (i == plane->format_count)
|
|
return -EINVAL;
|
|
|
|
if (plane->funcs->format_mod_supported) {
|
|
if (!plane->funcs->format_mod_supported(plane, format, modifier))
|
|
return -EINVAL;
|
|
} else {
|
|
if (!plane->modifier_count)
|
|
return 0;
|
|
|
|
for (i = 0; i < plane->modifier_count; i++) {
|
|
if (modifier == plane->modifiers[i])
|
|
break;
|
|
}
|
|
if (i == plane->modifier_count)
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __setplane_check(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,
|
|
uint32_t src_x, uint32_t src_y,
|
|
uint32_t src_w, uint32_t src_h)
|
|
{
|
|
int ret;
|
|
|
|
/* Check whether this plane is usable on this CRTC */
|
|
if (!(plane->possible_crtcs & drm_crtc_mask(crtc))) {
|
|
DRM_DEBUG_KMS("Invalid crtc for plane\n");
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Check whether this plane supports the fb pixel format. */
|
|
ret = drm_plane_check_pixel_format(plane, fb->format->format,
|
|
fb->modifier);
|
|
if (ret) {
|
|
DRM_DEBUG_KMS("Invalid pixel format %p4cc, modifier 0x%llx\n",
|
|
&fb->format->format, fb->modifier);
|
|
return ret;
|
|
}
|
|
|
|
/* 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;
|
|
}
|
|
|
|
ret = drm_framebuffer_check_src_coords(src_x, src_y, src_w, src_h, fb);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* drm_any_plane_has_format - Check whether any plane supports this format and modifier combination
|
|
* @dev: DRM device
|
|
* @format: pixel format (DRM_FORMAT_*)
|
|
* @modifier: data layout modifier
|
|
*
|
|
* Returns:
|
|
* Whether at least one plane supports the specified format and modifier combination.
|
|
*/
|
|
bool drm_any_plane_has_format(struct drm_device *dev,
|
|
u32 format, u64 modifier)
|
|
{
|
|
struct drm_plane *plane;
|
|
|
|
drm_for_each_plane(plane, dev) {
|
|
if (drm_plane_check_pixel_format(plane, format, modifier) == 0)
|
|
return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
EXPORT_SYMBOL(drm_any_plane_has_format);
|
|
|
|
/*
|
|
* __setplane_internal - setplane handler for internal callers
|
|
*
|
|
* This function will take a reference on the new fb for the plane
|
|
* on success.
|
|
*
|
|
* src_{x,y,w,h} are provided in 16.16 fixed point format
|
|
*/
|
|
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,
|
|
struct drm_modeset_acquire_ctx *ctx)
|
|
{
|
|
int ret = 0;
|
|
|
|
WARN_ON(drm_drv_uses_atomic_modeset(plane->dev));
|
|
|
|
/* No fb means shut it down */
|
|
if (!fb) {
|
|
plane->old_fb = plane->fb;
|
|
ret = plane->funcs->disable_plane(plane, ctx);
|
|
if (!ret) {
|
|
plane->crtc = NULL;
|
|
plane->fb = NULL;
|
|
} else {
|
|
plane->old_fb = NULL;
|
|
}
|
|
goto out;
|
|
}
|
|
|
|
ret = __setplane_check(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
src_x, src_y, src_w, src_h);
|
|
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, ctx);
|
|
if (!ret) {
|
|
plane->crtc = crtc;
|
|
plane->fb = fb;
|
|
drm_framebuffer_get(plane->fb);
|
|
} else {
|
|
plane->old_fb = NULL;
|
|
}
|
|
|
|
out:
|
|
if (plane->old_fb)
|
|
drm_framebuffer_put(plane->old_fb);
|
|
plane->old_fb = NULL;
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int __setplane_atomic(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,
|
|
uint32_t src_x, uint32_t src_y,
|
|
uint32_t src_w, uint32_t src_h,
|
|
struct drm_modeset_acquire_ctx *ctx)
|
|
{
|
|
int ret;
|
|
|
|
WARN_ON(!drm_drv_uses_atomic_modeset(plane->dev));
|
|
|
|
/* No fb means shut it down */
|
|
if (!fb)
|
|
return plane->funcs->disable_plane(plane, ctx);
|
|
|
|
/*
|
|
* FIXME: This is redundant with drm_atomic_plane_check(),
|
|
* but the legacy cursor/"async" .update_plane() tricks
|
|
* don't call that so we still need this here. Should remove
|
|
* this when all .update_plane() implementations have been
|
|
* fixed to call drm_atomic_plane_check().
|
|
*/
|
|
ret = __setplane_check(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
src_x, src_y, src_w, src_h);
|
|
if (ret)
|
|
return ret;
|
|
|
|
return plane->funcs->update_plane(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
src_x, src_y, src_w, src_h, ctx);
|
|
}
|
|
|
|
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)
|
|
{
|
|
struct drm_modeset_acquire_ctx ctx;
|
|
int ret;
|
|
|
|
DRM_MODESET_LOCK_ALL_BEGIN(plane->dev, ctx,
|
|
DRM_MODESET_ACQUIRE_INTERRUPTIBLE, ret);
|
|
|
|
if (drm_drv_uses_atomic_modeset(plane->dev))
|
|
ret = __setplane_atomic(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
src_x, src_y, src_w, src_h, &ctx);
|
|
else
|
|
ret = __setplane_internal(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
src_x, src_y, src_w, src_h, &ctx);
|
|
|
|
DRM_MODESET_LOCK_ALL_END(plane->dev, ctx, ret);
|
|
|
|
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;
|
|
int ret;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EOPNOTSUPP;
|
|
|
|
/*
|
|
* First, find the plane, crtc, and fb objects. If not available,
|
|
* we don't bother to call the driver.
|
|
*/
|
|
plane = drm_plane_find(dev, file_priv, 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, file_priv, 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, file_priv, plane_req->crtc_id);
|
|
if (!crtc) {
|
|
drm_framebuffer_put(fb);
|
|
DRM_DEBUG_KMS("Unknown crtc ID %d\n",
|
|
plane_req->crtc_id);
|
|
return -ENOENT;
|
|
}
|
|
}
|
|
|
|
ret = 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);
|
|
|
|
if (fb)
|
|
drm_framebuffer_put(fb);
|
|
|
|
return ret;
|
|
}
|
|
|
|
static int drm_mode_cursor_universal(struct drm_crtc *crtc,
|
|
struct drm_mode_cursor2 *req,
|
|
struct drm_file *file_priv,
|
|
struct drm_modeset_acquire_ctx *ctx)
|
|
{
|
|
struct drm_device *dev = crtc->dev;
|
|
struct drm_plane *plane = crtc->cursor;
|
|
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(!plane);
|
|
WARN_ON(plane->crtc != crtc && plane->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 {
|
|
if (plane->state)
|
|
fb = plane->state->fb;
|
|
else
|
|
fb = plane->fb;
|
|
|
|
if (fb)
|
|
drm_framebuffer_get(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;
|
|
}
|
|
|
|
if (drm_drv_uses_atomic_modeset(dev))
|
|
ret = __setplane_atomic(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
0, 0, src_w, src_h, ctx);
|
|
else
|
|
ret = __setplane_internal(plane, crtc, fb,
|
|
crtc_x, crtc_y, crtc_w, crtc_h,
|
|
0, 0, src_w, src_h, ctx);
|
|
|
|
if (fb)
|
|
drm_framebuffer_put(fb);
|
|
|
|
/* 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;
|
|
struct drm_modeset_acquire_ctx ctx;
|
|
int ret = 0;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (!req->flags || (~DRM_MODE_CURSOR_FLAGS & req->flags))
|
|
return -EINVAL;
|
|
|
|
crtc = drm_crtc_find(dev, file_priv, req->crtc_id);
|
|
if (!crtc) {
|
|
DRM_DEBUG_KMS("Unknown CRTC ID %d\n", req->crtc_id);
|
|
return -ENOENT;
|
|
}
|
|
|
|
drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
|
|
retry:
|
|
ret = drm_modeset_lock(&crtc->mutex, &ctx);
|
|
if (ret)
|
|
goto out;
|
|
/*
|
|
* If this crtc has a universal cursor plane, call that plane's update
|
|
* handler rather than using legacy cursor handlers.
|
|
*/
|
|
if (crtc->cursor) {
|
|
ret = drm_modeset_lock(&crtc->cursor->mutex, &ctx);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (!drm_lease_held(file_priv, crtc->cursor->base.id)) {
|
|
ret = -EACCES;
|
|
goto out;
|
|
}
|
|
|
|
ret = drm_mode_cursor_universal(crtc, req, file_priv, &ctx);
|
|
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:
|
|
if (ret == -EDEADLK) {
|
|
ret = drm_modeset_backoff(&ctx);
|
|
if (!ret)
|
|
goto retry;
|
|
}
|
|
|
|
drm_modeset_drop_locks(&ctx);
|
|
drm_modeset_acquire_fini(&ctx);
|
|
|
|
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_plane *plane;
|
|
struct drm_framebuffer *fb = NULL, *old_fb;
|
|
struct drm_pending_vblank_event *e = NULL;
|
|
u32 target_vblank = page_flip->sequence;
|
|
struct drm_modeset_acquire_ctx ctx;
|
|
int ret = -EINVAL;
|
|
|
|
if (!drm_core_check_feature(dev, DRIVER_MODESET))
|
|
return -EOPNOTSUPP;
|
|
|
|
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, file_priv, page_flip->crtc_id);
|
|
if (!crtc)
|
|
return -ENOENT;
|
|
|
|
plane = crtc->primary;
|
|
|
|
if (!drm_lease_held(file_priv, plane->base.id))
|
|
return -EACCES;
|
|
|
|
if (crtc->funcs->page_flip_target) {
|
|
u32 current_vblank;
|
|
int r;
|
|
|
|
r = drm_crtc_vblank_get(crtc);
|
|
if (r)
|
|
return r;
|
|
|
|
current_vblank = (u32)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_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
|
|
retry:
|
|
ret = drm_modeset_lock(&crtc->mutex, &ctx);
|
|
if (ret)
|
|
goto out;
|
|
ret = drm_modeset_lock(&plane->mutex, &ctx);
|
|
if (ret)
|
|
goto out;
|
|
|
|
if (plane->state)
|
|
old_fb = plane->state->fb;
|
|
else
|
|
old_fb = plane->fb;
|
|
|
|
if (old_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, file_priv, page_flip->fb_id);
|
|
if (!fb) {
|
|
ret = -ENOENT;
|
|
goto out;
|
|
}
|
|
|
|
if (plane->state) {
|
|
const struct drm_plane_state *state = plane->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;
|
|
|
|
/*
|
|
* Only check the FOURCC format code, excluding modifiers. This is
|
|
* enough for all legacy drivers. Atomic drivers have their own
|
|
* checks in their ->atomic_check implementation, which will
|
|
* return -EINVAL if any hw or driver constraint is violated due
|
|
* to modifier changes.
|
|
*/
|
|
if (old_fb->format->format != fb->format->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.vbl.user_data = page_flip->user_data;
|
|
e->event.vbl.crtc_id = crtc->base.id;
|
|
|
|
ret = drm_event_reserve_init(dev, file_priv, &e->base, &e->event.base);
|
|
if (ret) {
|
|
kfree(e);
|
|
e = NULL;
|
|
goto out;
|
|
}
|
|
}
|
|
|
|
plane->old_fb = plane->fb;
|
|
if (crtc->funcs->page_flip_target)
|
|
ret = crtc->funcs->page_flip_target(crtc, fb, e,
|
|
page_flip->flags,
|
|
target_vblank,
|
|
&ctx);
|
|
else
|
|
ret = crtc->funcs->page_flip(crtc, fb, e, page_flip->flags,
|
|
&ctx);
|
|
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. */
|
|
plane->old_fb = NULL;
|
|
} else {
|
|
if (!plane->state) {
|
|
plane->fb = fb;
|
|
drm_framebuffer_get(fb);
|
|
}
|
|
}
|
|
|
|
out:
|
|
if (fb)
|
|
drm_framebuffer_put(fb);
|
|
if (plane->old_fb)
|
|
drm_framebuffer_put(plane->old_fb);
|
|
plane->old_fb = NULL;
|
|
|
|
if (ret == -EDEADLK) {
|
|
ret = drm_modeset_backoff(&ctx);
|
|
if (!ret)
|
|
goto retry;
|
|
}
|
|
|
|
drm_modeset_drop_locks(&ctx);
|
|
drm_modeset_acquire_fini(&ctx);
|
|
|
|
if (ret && crtc->funcs->page_flip_target)
|
|
drm_crtc_vblank_put(crtc);
|
|
|
|
return ret;
|
|
}
|
|
|
|
/**
|
|
* DOC: damage tracking
|
|
*
|
|
* FB_DAMAGE_CLIPS is an optional plane property which provides a means to
|
|
* specify a list of damage rectangles on a plane in framebuffer coordinates of
|
|
* the framebuffer attached to the plane. In current context damage is the area
|
|
* of plane framebuffer that has changed since last plane update (also called
|
|
* page-flip), irrespective of whether currently attached framebuffer is same as
|
|
* framebuffer attached during last plane update or not.
|
|
*
|
|
* FB_DAMAGE_CLIPS is a hint to kernel which could be helpful for some drivers
|
|
* to optimize internally especially for virtual devices where each framebuffer
|
|
* change needs to be transmitted over network, usb, etc.
|
|
*
|
|
* Since FB_DAMAGE_CLIPS is a hint so it is an optional property. User-space can
|
|
* ignore damage clips property and in that case driver will do a full plane
|
|
* update. In case damage clips are provided then it is guaranteed that the area
|
|
* inside damage clips will be updated to plane. For efficiency driver can do
|
|
* full update or can update more than specified in damage clips. Since driver
|
|
* is free to read more, user-space must always render the entire visible
|
|
* framebuffer. Otherwise there can be corruptions. Also, if a user-space
|
|
* provides damage clips which doesn't encompass the actual damage to
|
|
* framebuffer (since last plane update) can result in incorrect rendering.
|
|
*
|
|
* FB_DAMAGE_CLIPS is a blob property with the layout of blob data is simply an
|
|
* array of &drm_mode_rect. Unlike plane &drm_plane_state.src coordinates,
|
|
* damage clips are not in 16.16 fixed point. Similar to plane src in
|
|
* framebuffer, damage clips cannot be negative. In damage clip, x1/y1 are
|
|
* inclusive and x2/y2 are exclusive. While kernel does not error for overlapped
|
|
* damage clips, it is strongly discouraged.
|
|
*
|
|
* Drivers that are interested in damage interface for plane should enable
|
|
* FB_DAMAGE_CLIPS property by calling drm_plane_enable_fb_damage_clips().
|
|
* Drivers implementing damage can use drm_atomic_helper_damage_iter_init() and
|
|
* drm_atomic_helper_damage_iter_next() helper iterator function to get damage
|
|
* rectangles clipped to &drm_plane_state.src.
|
|
*/
|
|
|
|
/**
|
|
* drm_plane_enable_fb_damage_clips - Enables plane fb damage clips property.
|
|
* @plane: Plane on which to enable damage clips property.
|
|
*
|
|
* This function lets driver to enable the damage clips property on a plane.
|
|
*/
|
|
void drm_plane_enable_fb_damage_clips(struct drm_plane *plane)
|
|
{
|
|
struct drm_device *dev = plane->dev;
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
drm_object_attach_property(&plane->base, config->prop_fb_damage_clips,
|
|
0);
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_enable_fb_damage_clips);
|
|
|
|
/**
|
|
* drm_plane_get_damage_clips_count - Returns damage clips count.
|
|
* @state: Plane state.
|
|
*
|
|
* Simple helper to get the number of &drm_mode_rect clips set by user-space
|
|
* during plane update.
|
|
*
|
|
* Return: Number of clips in plane fb_damage_clips blob property.
|
|
*/
|
|
unsigned int
|
|
drm_plane_get_damage_clips_count(const struct drm_plane_state *state)
|
|
{
|
|
return (state && state->fb_damage_clips) ?
|
|
state->fb_damage_clips->length/sizeof(struct drm_mode_rect) : 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_get_damage_clips_count);
|
|
|
|
struct drm_mode_rect *
|
|
__drm_plane_get_damage_clips(const struct drm_plane_state *state)
|
|
{
|
|
return (struct drm_mode_rect *)((state && state->fb_damage_clips) ?
|
|
state->fb_damage_clips->data : NULL);
|
|
}
|
|
|
|
/**
|
|
* drm_plane_get_damage_clips - Returns damage clips.
|
|
* @state: Plane state.
|
|
*
|
|
* Note that this function returns uapi type &drm_mode_rect. Drivers might want
|
|
* to use the helper functions drm_atomic_helper_damage_iter_init() and
|
|
* drm_atomic_helper_damage_iter_next() or drm_atomic_helper_damage_merged() if
|
|
* the driver can only handle a single damage region at most.
|
|
*
|
|
* Return: Damage clips in plane fb_damage_clips blob property.
|
|
*/
|
|
struct drm_mode_rect *
|
|
drm_plane_get_damage_clips(const struct drm_plane_state *state)
|
|
{
|
|
struct drm_device *dev = state->plane->dev;
|
|
struct drm_mode_config *config = &dev->mode_config;
|
|
|
|
/* check that drm_plane_enable_fb_damage_clips() was called */
|
|
if (!drm_mode_obj_find_prop_id(&state->plane->base,
|
|
config->prop_fb_damage_clips->base.id))
|
|
drm_warn_once(dev, "drm_plane_enable_fb_damage_clips() not called\n");
|
|
|
|
return __drm_plane_get_damage_clips(state);
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_get_damage_clips);
|
|
|
|
struct drm_property *
|
|
drm_create_scaling_filter_prop(struct drm_device *dev,
|
|
unsigned int supported_filters)
|
|
{
|
|
struct drm_property *prop;
|
|
static const struct drm_prop_enum_list props[] = {
|
|
{ DRM_SCALING_FILTER_DEFAULT, "Default" },
|
|
{ DRM_SCALING_FILTER_NEAREST_NEIGHBOR, "Nearest Neighbor" },
|
|
};
|
|
unsigned int valid_mode_mask = BIT(DRM_SCALING_FILTER_DEFAULT) |
|
|
BIT(DRM_SCALING_FILTER_NEAREST_NEIGHBOR);
|
|
int i;
|
|
|
|
if (WARN_ON((supported_filters & ~valid_mode_mask) ||
|
|
((supported_filters & BIT(DRM_SCALING_FILTER_DEFAULT)) == 0)))
|
|
return ERR_PTR(-EINVAL);
|
|
|
|
prop = drm_property_create(dev, DRM_MODE_PROP_ENUM,
|
|
"SCALING_FILTER",
|
|
hweight32(supported_filters));
|
|
if (!prop)
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
for (i = 0; i < ARRAY_SIZE(props); i++) {
|
|
int ret;
|
|
|
|
if (!(BIT(props[i].type) & supported_filters))
|
|
continue;
|
|
|
|
ret = drm_property_add_enum(prop, props[i].type,
|
|
props[i].name);
|
|
|
|
if (ret) {
|
|
drm_property_destroy(dev, prop);
|
|
|
|
return ERR_PTR(ret);
|
|
}
|
|
}
|
|
|
|
return prop;
|
|
}
|
|
|
|
/**
|
|
* drm_plane_create_scaling_filter_property - create a new scaling filter
|
|
* property
|
|
*
|
|
* @plane: drm plane
|
|
* @supported_filters: bitmask of supported scaling filters, must include
|
|
* BIT(DRM_SCALING_FILTER_DEFAULT).
|
|
*
|
|
* This function lets driver to enable the scaling filter property on a given
|
|
* plane.
|
|
*
|
|
* RETURNS:
|
|
* Zero for success or -errno
|
|
*/
|
|
int drm_plane_create_scaling_filter_property(struct drm_plane *plane,
|
|
unsigned int supported_filters)
|
|
{
|
|
struct drm_property *prop =
|
|
drm_create_scaling_filter_prop(plane->dev, supported_filters);
|
|
|
|
if (IS_ERR(prop))
|
|
return PTR_ERR(prop);
|
|
|
|
drm_object_attach_property(&plane->base, prop,
|
|
DRM_SCALING_FILTER_DEFAULT);
|
|
plane->scaling_filter_property = prop;
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL(drm_plane_create_scaling_filter_property);
|