2019-06-18 10:16:53 +00:00
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/*
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* Copyright © 2008-2011 Kristian Høgsberg
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* Copyright © 2011 Intel Corporation
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* Copyright © 2017, 2018 Collabora, Ltd.
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* Copyright © 2017, 2018 General Electric Company
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* Copyright (c) 2018 DisplayLink (UK) Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "config.h"
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#include <stdint.h>
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#include <xf86drm.h>
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#include <xf86drmMode.h>
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#include <libweston/libweston.h>
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#include <libweston/backend-drm.h>
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#include <libweston/pixel-formats.h>
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#include <libweston/linux-dmabuf.h>
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#include "shared/helpers.h"
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2021-02-04 15:39:45 +00:00
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#include "shared/weston-drm-fourcc.h"
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2019-06-18 10:16:53 +00:00
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#include "drm-internal.h"
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#include "linux-dmabuf.h"
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static void
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drm_fb_destroy(struct drm_fb *fb)
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{
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if (fb->fb_id != 0)
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drmModeRmFB(fb->fd, fb->fb_id);
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free(fb);
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}
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static void
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drm_fb_destroy_dumb(struct drm_fb *fb)
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{
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struct drm_mode_destroy_dumb destroy_arg;
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assert(fb->type == BUFFER_PIXMAN_DUMB);
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if (fb->map && fb->size > 0)
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munmap(fb->map, fb->size);
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memset(&destroy_arg, 0, sizeof(destroy_arg));
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destroy_arg.handle = fb->handles[0];
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drmIoctl(fb->fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
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drm_fb_destroy(fb);
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}
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static int
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drm_fb_addfb(struct drm_backend *b, struct drm_fb *fb)
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{
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int ret = -EINVAL;
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uint64_t mods[4] = { };
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size_t i;
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/* If we have a modifier set, we must only use the WithModifiers
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* entrypoint; we cannot import it through legacy ioctls. */
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if (b->fb_modifiers && fb->modifier != DRM_FORMAT_MOD_INVALID) {
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/* KMS demands that if a modifier is set, it must be the same
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* for all planes. */
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for (i = 0; i < ARRAY_LENGTH(mods) && fb->handles[i]; i++)
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mods[i] = fb->modifier;
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ret = drmModeAddFB2WithModifiers(fb->fd, fb->width, fb->height,
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fb->format->format,
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fb->handles, fb->strides,
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fb->offsets, mods, &fb->fb_id,
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DRM_MODE_FB_MODIFIERS);
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return ret;
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}
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ret = drmModeAddFB2(fb->fd, fb->width, fb->height, fb->format->format,
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fb->handles, fb->strides, fb->offsets, &fb->fb_id,
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0);
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if (ret == 0)
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return 0;
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/* Legacy AddFB can't always infer the format from depth/bpp alone, so
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* check if our format is one of the lucky ones. */
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if (!fb->format->depth || !fb->format->bpp)
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return ret;
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/* Cannot fall back to AddFB for multi-planar formats either. */
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if (fb->handles[1] || fb->handles[2] || fb->handles[3])
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return ret;
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ret = drmModeAddFB(fb->fd, fb->width, fb->height,
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fb->format->depth, fb->format->bpp,
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fb->strides[0], fb->handles[0], &fb->fb_id);
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return ret;
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}
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struct drm_fb *
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drm_fb_create_dumb(struct drm_backend *b, int width, int height,
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uint32_t format)
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{
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struct drm_fb *fb;
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int ret;
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struct drm_mode_create_dumb create_arg;
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struct drm_mode_destroy_dumb destroy_arg;
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struct drm_mode_map_dumb map_arg;
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fb = zalloc(sizeof *fb);
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if (!fb)
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return NULL;
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fb->refcnt = 1;
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fb->format = pixel_format_get_info(format);
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if (!fb->format) {
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weston_log("failed to look up format 0x%lx\n",
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(unsigned long) format);
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goto err_fb;
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}
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if (!fb->format->depth || !fb->format->bpp) {
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weston_log("format 0x%lx is not compatible with dumb buffers\n",
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(unsigned long) format);
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goto err_fb;
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}
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memset(&create_arg, 0, sizeof create_arg);
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create_arg.bpp = fb->format->bpp;
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create_arg.width = width;
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create_arg.height = height;
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ret = drmIoctl(b->drm.fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_arg);
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if (ret)
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goto err_fb;
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fb->type = BUFFER_PIXMAN_DUMB;
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fb->modifier = DRM_FORMAT_MOD_INVALID;
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fb->handles[0] = create_arg.handle;
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fb->strides[0] = create_arg.pitch;
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fb->num_planes = 1;
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fb->size = create_arg.size;
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fb->width = width;
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fb->height = height;
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fb->fd = b->drm.fd;
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if (drm_fb_addfb(b, fb) != 0) {
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weston_log("failed to create kms fb: %s\n", strerror(errno));
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goto err_bo;
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}
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memset(&map_arg, 0, sizeof map_arg);
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map_arg.handle = fb->handles[0];
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ret = drmIoctl(fb->fd, DRM_IOCTL_MODE_MAP_DUMB, &map_arg);
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if (ret)
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goto err_add_fb;
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fb->map = mmap(NULL, fb->size, PROT_WRITE,
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MAP_SHARED, b->drm.fd, map_arg.offset);
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if (fb->map == MAP_FAILED)
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goto err_add_fb;
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return fb;
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err_add_fb:
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drmModeRmFB(b->drm.fd, fb->fb_id);
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err_bo:
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memset(&destroy_arg, 0, sizeof(destroy_arg));
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destroy_arg.handle = create_arg.handle;
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drmIoctl(b->drm.fd, DRM_IOCTL_MODE_DESTROY_DUMB, &destroy_arg);
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err_fb:
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free(fb);
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return NULL;
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}
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struct drm_fb *
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drm_fb_ref(struct drm_fb *fb)
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{
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fb->refcnt++;
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return fb;
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}
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2019-07-09 20:02:00 +00:00
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#ifdef BUILD_DRM_GBM
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static void
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drm_fb_destroy_gbm(struct gbm_bo *bo, void *data)
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{
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struct drm_fb *fb = data;
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assert(fb->type == BUFFER_GBM_SURFACE || fb->type == BUFFER_CLIENT ||
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fb->type == BUFFER_CURSOR);
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drm_fb_destroy(fb);
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}
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2019-06-18 10:16:53 +00:00
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static void
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drm_fb_destroy_dmabuf(struct drm_fb *fb)
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{
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/* We deliberately do not close the GEM handles here; GBM manages
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* their lifetime through the BO. */
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if (fb->bo)
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gbm_bo_destroy(fb->bo);
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drm_fb_destroy(fb);
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}
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static struct drm_fb *
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drm_fb_get_from_dmabuf(struct linux_dmabuf_buffer *dmabuf,
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2021-09-13 17:52:53 +00:00
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struct drm_backend *backend, bool is_opaque,
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uint32_t *try_view_on_plane_failure_reasons)
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2019-06-18 10:16:53 +00:00
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{
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backend-drm: do not import dmabuf buffers with no modifiers to KMS
We can't tell the layout of a buffer that has been allocated with no
modifiers. Although usually drivers use linear layouts to allocate in
these cases, it is not a rule. It can use a tiling layout, for instance,
under the hood.
So it is not safe to import a buffer with no modifiers to KMS, as it
can't tell the buffer layout and this may result in garbage being
displayed. In this patch we start to require explicit modifiers to
import buffers to KMS.
In most cases things just work as expected, but just because both sides
(display and render driver) usually end up using the linear layout when
modifiers are not exposed. It also works on systems where the display
and render devices are tied (desktops with Intel or AMD, for instance),
as there's only one driver and it knows the layout of the buffer (no
need to guess).
But in SoC's where the display and render device are split, things can
go wrong. It is better to lose performance and not break things. To
solve the problem, drivers should be updated to expose modifiers (even
if only DRM_FORMAT_MOD_LINEAR), as the concept of implicit modifiers is
the root of the problem.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
2021-04-21 13:38:58 +00:00
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#ifndef HAVE_GBM_FD_IMPORT
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/* Importing a buffer to KMS requires explicit modifiers, so
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* we can't continue with the legacy GBM_BO_IMPORT_FD instead
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* of GBM_BO_IMPORT_FD_MODIFIER. */
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return NULL;
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#else
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2019-06-18 10:16:53 +00:00
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struct drm_fb *fb;
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backend-drm: do not import dmabuf buffers with no modifiers to KMS
We can't tell the layout of a buffer that has been allocated with no
modifiers. Although usually drivers use linear layouts to allocate in
these cases, it is not a rule. It can use a tiling layout, for instance,
under the hood.
So it is not safe to import a buffer with no modifiers to KMS, as it
can't tell the buffer layout and this may result in garbage being
displayed. In this patch we start to require explicit modifiers to
import buffers to KMS.
In most cases things just work as expected, but just because both sides
(display and render driver) usually end up using the linear layout when
modifiers are not exposed. It also works on systems where the display
and render devices are tied (desktops with Intel or AMD, for instance),
as there's only one driver and it knows the layout of the buffer (no
need to guess).
But in SoC's where the display and render device are split, things can
go wrong. It is better to lose performance and not break things. To
solve the problem, drivers should be updated to expose modifiers (even
if only DRM_FORMAT_MOD_LINEAR), as the concept of implicit modifiers is
the root of the problem.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
2021-04-21 13:38:58 +00:00
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int i;
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2019-06-18 10:16:53 +00:00
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struct gbm_import_fd_modifier_data import_mod = {
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.width = dmabuf->attributes.width,
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.height = dmabuf->attributes.height,
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.format = dmabuf->attributes.format,
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.num_fds = dmabuf->attributes.n_planes,
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.modifier = dmabuf->attributes.modifier[0],
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};
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2019-10-30 02:13:09 +00:00
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2021-07-31 15:25:41 +00:00
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/* We should not import to KMS a buffer that has been allocated using no
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* modifiers. Usually drivers use linear layouts to allocate with no
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* modifiers, but this is not a rule. The driver could use, for
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* instance, a tiling layout under the hood - and both Weston and the
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* KMS driver can't know. So giving the buffer to KMS is not safe, as
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* not knowing its layout can result in garbage being displayed. In
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* short, importing a buffer to KMS requires explicit modifiers. */
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2021-09-13 17:52:53 +00:00
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if (dmabuf->attributes.modifier[0] == DRM_FORMAT_MOD_INVALID) {
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if (try_view_on_plane_failure_reasons)
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*try_view_on_plane_failure_reasons |=
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FAILURE_REASONS_DMABUF_MODIFIER_INVALID;
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backend-drm: do not import dmabuf buffers with no modifiers to KMS
We can't tell the layout of a buffer that has been allocated with no
modifiers. Although usually drivers use linear layouts to allocate in
these cases, it is not a rule. It can use a tiling layout, for instance,
under the hood.
So it is not safe to import a buffer with no modifiers to KMS, as it
can't tell the buffer layout and this may result in garbage being
displayed. In this patch we start to require explicit modifiers to
import buffers to KMS.
In most cases things just work as expected, but just because both sides
(display and render driver) usually end up using the linear layout when
modifiers are not exposed. It also works on systems where the display
and render devices are tied (desktops with Intel or AMD, for instance),
as there's only one driver and it knows the layout of the buffer (no
need to guess).
But in SoC's where the display and render device are split, things can
go wrong. It is better to lose performance and not break things. To
solve the problem, drivers should be updated to expose modifiers (even
if only DRM_FORMAT_MOD_LINEAR), as the concept of implicit modifiers is
the root of the problem.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
2021-04-21 13:38:58 +00:00
|
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|
return NULL;
|
2021-09-13 17:52:53 +00:00
|
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}
|
2019-06-18 10:16:53 +00:00
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/* XXX: TODO:
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*
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* Currently the buffer is rejected if any dmabuf attribute
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* flag is set. This keeps us from passing an inverted /
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* interlaced / bottom-first buffer (or any other type that may
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* be added in the future) through to an overlay. Ultimately,
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* these types of buffers should be handled through buffer
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* transforms and not as spot-checks requiring specific
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* knowledge. */
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if (dmabuf->attributes.flags)
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return NULL;
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fb = zalloc(sizeof *fb);
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if (fb == NULL)
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return NULL;
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fb->refcnt = 1;
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fb->type = BUFFER_DMABUF;
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2021-04-27 22:00:34 +00:00
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ARRAY_COPY(import_mod.fds, dmabuf->attributes.fd);
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ARRAY_COPY(import_mod.strides, dmabuf->attributes.stride);
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ARRAY_COPY(import_mod.offsets, dmabuf->attributes.offset);
|
2019-06-18 10:16:53 +00:00
|
|
|
|
backend-drm: do not import dmabuf buffers with no modifiers to KMS
We can't tell the layout of a buffer that has been allocated with no
modifiers. Although usually drivers use linear layouts to allocate in
these cases, it is not a rule. It can use a tiling layout, for instance,
under the hood.
So it is not safe to import a buffer with no modifiers to KMS, as it
can't tell the buffer layout and this may result in garbage being
displayed. In this patch we start to require explicit modifiers to
import buffers to KMS.
In most cases things just work as expected, but just because both sides
(display and render driver) usually end up using the linear layout when
modifiers are not exposed. It also works on systems where the display
and render devices are tied (desktops with Intel or AMD, for instance),
as there's only one driver and it knows the layout of the buffer (no
need to guess).
But in SoC's where the display and render device are split, things can
go wrong. It is better to lose performance and not break things. To
solve the problem, drivers should be updated to expose modifiers (even
if only DRM_FORMAT_MOD_LINEAR), as the concept of implicit modifiers is
the root of the problem.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
2021-04-21 13:38:58 +00:00
|
|
|
fb->bo = gbm_bo_import(backend->gbm, GBM_BO_IMPORT_FD_MODIFIER,
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|
|
|
&import_mod, GBM_BO_USE_SCANOUT);
|
2019-06-18 10:16:53 +00:00
|
|
|
if (!fb->bo)
|
|
|
|
goto err_free;
|
|
|
|
|
|
|
|
fb->width = dmabuf->attributes.width;
|
|
|
|
fb->height = dmabuf->attributes.height;
|
|
|
|
fb->modifier = dmabuf->attributes.modifier[0];
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|
|
|
fb->size = 0;
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|
|
fb->fd = backend->drm.fd;
|
|
|
|
|
2021-04-27 22:00:34 +00:00
|
|
|
ARRAY_COPY(fb->strides, dmabuf->attributes.stride);
|
|
|
|
ARRAY_COPY(fb->offsets, dmabuf->attributes.offset);
|
2019-06-18 10:16:53 +00:00
|
|
|
|
|
|
|
fb->format = pixel_format_get_info(dmabuf->attributes.format);
|
|
|
|
if (!fb->format) {
|
|
|
|
weston_log("couldn't look up format info for 0x%lx\n",
|
|
|
|
(unsigned long) dmabuf->attributes.format);
|
|
|
|
goto err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (is_opaque)
|
|
|
|
fb->format = pixel_format_get_opaque_substitute(fb->format);
|
|
|
|
|
|
|
|
if (backend->min_width > fb->width ||
|
|
|
|
fb->width > backend->max_width ||
|
|
|
|
backend->min_height > fb->height ||
|
|
|
|
fb->height > backend->max_height) {
|
|
|
|
weston_log("bo geometry out of bounds\n");
|
|
|
|
goto err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
fb->num_planes = dmabuf->attributes.n_planes;
|
|
|
|
for (i = 0; i < dmabuf->attributes.n_planes; i++) {
|
|
|
|
union gbm_bo_handle handle;
|
|
|
|
|
|
|
|
handle = gbm_bo_get_handle_for_plane(fb->bo, i);
|
|
|
|
if (handle.s32 == -1)
|
|
|
|
goto err_free;
|
|
|
|
fb->handles[i] = handle.u32;
|
|
|
|
}
|
|
|
|
|
2021-09-13 17:52:53 +00:00
|
|
|
if (drm_fb_addfb(backend, fb) != 0) {
|
|
|
|
if (try_view_on_plane_failure_reasons)
|
|
|
|
*try_view_on_plane_failure_reasons |=
|
|
|
|
FAILURE_REASONS_ADD_FB_FAILED;
|
2019-06-18 10:16:53 +00:00
|
|
|
goto err_free;
|
2021-09-13 17:52:53 +00:00
|
|
|
}
|
2019-06-18 10:16:53 +00:00
|
|
|
|
|
|
|
return fb;
|
|
|
|
|
|
|
|
err_free:
|
|
|
|
drm_fb_destroy_dmabuf(fb);
|
|
|
|
return NULL;
|
backend-drm: do not import dmabuf buffers with no modifiers to KMS
We can't tell the layout of a buffer that has been allocated with no
modifiers. Although usually drivers use linear layouts to allocate in
these cases, it is not a rule. It can use a tiling layout, for instance,
under the hood.
So it is not safe to import a buffer with no modifiers to KMS, as it
can't tell the buffer layout and this may result in garbage being
displayed. In this patch we start to require explicit modifiers to
import buffers to KMS.
In most cases things just work as expected, but just because both sides
(display and render driver) usually end up using the linear layout when
modifiers are not exposed. It also works on systems where the display
and render devices are tied (desktops with Intel or AMD, for instance),
as there's only one driver and it knows the layout of the buffer (no
need to guess).
But in SoC's where the display and render device are split, things can
go wrong. It is better to lose performance and not break things. To
solve the problem, drivers should be updated to expose modifiers (even
if only DRM_FORMAT_MOD_LINEAR), as the concept of implicit modifiers is
the root of the problem.
Signed-off-by: Leandro Ribeiro <leandro.ribeiro@collabora.com>
2021-04-21 13:38:58 +00:00
|
|
|
#endif
|
2019-06-18 10:16:53 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
struct drm_fb *
|
|
|
|
drm_fb_get_from_bo(struct gbm_bo *bo, struct drm_backend *backend,
|
|
|
|
bool is_opaque, enum drm_fb_type type)
|
|
|
|
{
|
|
|
|
struct drm_fb *fb = gbm_bo_get_user_data(bo);
|
|
|
|
#ifdef HAVE_GBM_MODIFIERS
|
|
|
|
int i;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (fb) {
|
|
|
|
assert(fb->type == type);
|
|
|
|
return drm_fb_ref(fb);
|
|
|
|
}
|
|
|
|
|
|
|
|
fb = zalloc(sizeof *fb);
|
|
|
|
if (fb == NULL)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
fb->type = type;
|
|
|
|
fb->refcnt = 1;
|
|
|
|
fb->bo = bo;
|
|
|
|
fb->fd = backend->drm.fd;
|
|
|
|
|
|
|
|
fb->width = gbm_bo_get_width(bo);
|
|
|
|
fb->height = gbm_bo_get_height(bo);
|
|
|
|
fb->format = pixel_format_get_info(gbm_bo_get_format(bo));
|
|
|
|
fb->size = 0;
|
|
|
|
|
|
|
|
#ifdef HAVE_GBM_MODIFIERS
|
|
|
|
fb->modifier = gbm_bo_get_modifier(bo);
|
|
|
|
fb->num_planes = gbm_bo_get_plane_count(bo);
|
|
|
|
for (i = 0; i < fb->num_planes; i++) {
|
|
|
|
fb->strides[i] = gbm_bo_get_stride_for_plane(bo, i);
|
|
|
|
fb->handles[i] = gbm_bo_get_handle_for_plane(bo, i).u32;
|
|
|
|
fb->offsets[i] = gbm_bo_get_offset(bo, i);
|
|
|
|
}
|
|
|
|
#else
|
|
|
|
fb->num_planes = 1;
|
|
|
|
fb->strides[0] = gbm_bo_get_stride(bo);
|
|
|
|
fb->handles[0] = gbm_bo_get_handle(bo).u32;
|
|
|
|
fb->modifier = DRM_FORMAT_MOD_INVALID;
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (!fb->format) {
|
|
|
|
weston_log("couldn't look up format 0x%lx\n",
|
|
|
|
(unsigned long) gbm_bo_get_format(bo));
|
|
|
|
goto err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* We can scanout an ARGB buffer if the surface's opaque region covers
|
|
|
|
* the whole output, but we have to use XRGB as the KMS format code. */
|
|
|
|
if (is_opaque)
|
|
|
|
fb->format = pixel_format_get_opaque_substitute(fb->format);
|
|
|
|
|
|
|
|
if (backend->min_width > fb->width ||
|
|
|
|
fb->width > backend->max_width ||
|
|
|
|
backend->min_height > fb->height ||
|
|
|
|
fb->height > backend->max_height) {
|
|
|
|
weston_log("bo geometry out of bounds\n");
|
|
|
|
goto err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (drm_fb_addfb(backend, fb) != 0) {
|
|
|
|
if (type == BUFFER_GBM_SURFACE)
|
|
|
|
weston_log("failed to create kms fb: %s\n",
|
|
|
|
strerror(errno));
|
|
|
|
goto err_free;
|
|
|
|
}
|
|
|
|
|
|
|
|
gbm_bo_set_user_data(bo, fb, drm_fb_destroy_gbm);
|
|
|
|
|
|
|
|
return fb;
|
|
|
|
|
|
|
|
err_free:
|
|
|
|
free(fb);
|
|
|
|
return NULL;
|
|
|
|
}
|
2019-07-09 20:02:00 +00:00
|
|
|
#endif
|
2019-06-18 10:16:53 +00:00
|
|
|
|
|
|
|
void
|
|
|
|
drm_fb_unref(struct drm_fb *fb)
|
|
|
|
{
|
|
|
|
if (!fb)
|
|
|
|
return;
|
|
|
|
|
|
|
|
assert(fb->refcnt > 0);
|
|
|
|
if (--fb->refcnt > 0)
|
|
|
|
return;
|
|
|
|
|
|
|
|
switch (fb->type) {
|
|
|
|
case BUFFER_PIXMAN_DUMB:
|
|
|
|
drm_fb_destroy_dumb(fb);
|
|
|
|
break;
|
2019-07-09 20:02:00 +00:00
|
|
|
#ifdef BUILD_DRM_GBM
|
2019-06-18 10:16:53 +00:00
|
|
|
case BUFFER_CURSOR:
|
|
|
|
case BUFFER_CLIENT:
|
|
|
|
gbm_bo_destroy(fb->bo);
|
|
|
|
break;
|
|
|
|
case BUFFER_GBM_SURFACE:
|
|
|
|
gbm_surface_release_buffer(fb->gbm_surface, fb->bo);
|
|
|
|
break;
|
|
|
|
case BUFFER_DMABUF:
|
|
|
|
drm_fb_destroy_dmabuf(fb);
|
|
|
|
break;
|
2019-07-09 20:02:00 +00:00
|
|
|
#endif
|
2019-06-18 10:16:53 +00:00
|
|
|
default:
|
|
|
|
assert(NULL);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2019-07-09 20:02:00 +00:00
|
|
|
#ifdef BUILD_DRM_GBM
|
2019-11-10 22:27:17 +00:00
|
|
|
bool
|
|
|
|
drm_can_scanout_dmabuf(struct weston_compositor *ec,
|
|
|
|
struct linux_dmabuf_buffer *dmabuf)
|
|
|
|
{
|
|
|
|
struct drm_fb *fb;
|
|
|
|
struct drm_backend *b = to_drm_backend(ec);
|
|
|
|
bool ret = false;
|
|
|
|
|
2021-09-13 17:52:53 +00:00
|
|
|
fb = drm_fb_get_from_dmabuf(dmabuf, b, true, NULL);
|
2019-11-10 22:27:17 +00:00
|
|
|
if (fb)
|
|
|
|
ret = true;
|
|
|
|
|
|
|
|
drm_fb_unref(fb);
|
|
|
|
drm_debug(b, "[dmabuf] dmabuf %p, import test %s\n", dmabuf,
|
|
|
|
ret ? "succeeded" : "failed");
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
2021-11-16 18:56:09 +00:00
|
|
|
static bool
|
|
|
|
drm_fb_compatible_with_plane(struct drm_fb *fb, struct drm_plane *plane)
|
|
|
|
{
|
|
|
|
struct drm_backend *b = plane->backend;
|
|
|
|
struct weston_drm_format *fmt;
|
|
|
|
|
|
|
|
/* Check whether the format is supported */
|
|
|
|
fmt = weston_drm_format_array_find_format(&plane->formats,
|
|
|
|
fb->format->format);
|
|
|
|
if (fmt) {
|
|
|
|
/* We never try to promote a dmabuf with DRM_FORMAT_MOD_INVALID
|
|
|
|
* to a KMS plane (see drm_fb_get_from_dmabuf() for more details).
|
|
|
|
* So if fb->modifier == DRM_FORMAT_MOD_INVALID, we are sure
|
|
|
|
* that this is for the legacy GBM import path, in which a
|
|
|
|
* wl_drm is being used for scanout. Mesa is the only user we
|
|
|
|
* care in this case (even though recent versions are also using
|
|
|
|
* dmabufs), and it should know better what works or not. */
|
|
|
|
if (fb->modifier == DRM_FORMAT_MOD_INVALID)
|
|
|
|
return true;
|
|
|
|
|
|
|
|
if (weston_drm_format_has_modifier(fmt, fb->modifier))
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
drm_debug(b, "\t\t\t\t[%s] not placing view on %s: "
|
|
|
|
"no free %s planes matching format %s (0x%lx) "
|
|
|
|
"modifier 0x%llx\n",
|
|
|
|
drm_output_get_plane_type_name(plane),
|
|
|
|
drm_output_get_plane_type_name(plane),
|
|
|
|
drm_output_get_plane_type_name(plane),
|
|
|
|
fb->format->drm_format_name,
|
|
|
|
(unsigned long) fb->format->format,
|
|
|
|
(unsigned long long) fb->modifier);
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
2021-11-18 16:01:03 +00:00
|
|
|
static void
|
|
|
|
drm_fb_handle_buffer_destroy(struct wl_listener *listener, void *data)
|
|
|
|
{
|
|
|
|
struct drm_buffer_fb *buf_fb =
|
|
|
|
container_of(listener, struct drm_buffer_fb, buffer_destroy_listener);
|
|
|
|
|
|
|
|
if (buf_fb->fb) {
|
|
|
|
assert(buf_fb->fb->type == BUFFER_CLIENT ||
|
|
|
|
buf_fb->fb->type == BUFFER_DMABUF);
|
|
|
|
drm_fb_unref(buf_fb->fb);
|
|
|
|
}
|
|
|
|
|
|
|
|
free(buf_fb);
|
|
|
|
}
|
|
|
|
|
2019-06-18 10:16:53 +00:00
|
|
|
struct drm_fb *
|
2021-09-13 17:52:53 +00:00
|
|
|
drm_fb_get_from_view(struct drm_output_state *state, struct weston_view *ev,
|
|
|
|
uint32_t *try_view_on_plane_failure_reasons)
|
2019-06-18 10:16:53 +00:00
|
|
|
{
|
|
|
|
struct drm_output *output = state->output;
|
|
|
|
struct drm_backend *b = to_drm_backend(output->base.compositor);
|
|
|
|
struct weston_buffer *buffer = ev->surface->buffer_ref.buffer;
|
2021-11-18 16:01:03 +00:00
|
|
|
struct drm_buffer_fb *buf_fb;
|
2019-06-18 10:16:53 +00:00
|
|
|
bool is_opaque = weston_view_is_opaque(ev, &ev->transform.boundingbox);
|
|
|
|
struct linux_dmabuf_buffer *dmabuf;
|
|
|
|
struct drm_fb *fb;
|
2021-11-16 18:56:09 +00:00
|
|
|
struct drm_plane *plane;
|
2019-06-18 10:16:53 +00:00
|
|
|
|
|
|
|
if (ev->alpha != 1.0f)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
if (!drm_view_transform_supported(ev, &output->base))
|
|
|
|
return NULL;
|
|
|
|
|
2019-08-19 15:53:40 +00:00
|
|
|
if (ev->surface->protection_mode == WESTON_SURFACE_PROTECTION_MODE_ENFORCED &&
|
|
|
|
ev->surface->desired_protection > output->base.current_protection)
|
|
|
|
return NULL;
|
|
|
|
|
2019-06-18 10:16:53 +00:00
|
|
|
if (!buffer)
|
|
|
|
return NULL;
|
|
|
|
|
2021-11-18 16:01:03 +00:00
|
|
|
if (buffer->backend_private) {
|
|
|
|
buf_fb = buffer->backend_private;
|
|
|
|
*try_view_on_plane_failure_reasons |= buf_fb->failure_reasons;
|
|
|
|
return buf_fb->fb ? drm_fb_ref(buf_fb->fb) : NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
buf_fb = zalloc(sizeof(*buf_fb));
|
|
|
|
buffer->backend_private = buf_fb;
|
|
|
|
buf_fb->buffer_destroy_listener.notify = drm_fb_handle_buffer_destroy;
|
|
|
|
wl_signal_add(&buffer->destroy_signal, &buf_fb->buffer_destroy_listener);
|
|
|
|
|
2019-06-18 10:16:53 +00:00
|
|
|
if (wl_shm_buffer_get(buffer->resource))
|
2021-11-18 16:01:03 +00:00
|
|
|
goto unsuitable;
|
2019-06-18 10:16:53 +00:00
|
|
|
|
|
|
|
/* GBM is used for dmabuf import as well as from client wl_buffer. */
|
|
|
|
if (!b->gbm)
|
2021-11-18 16:01:03 +00:00
|
|
|
goto unsuitable;
|
2019-06-18 10:16:53 +00:00
|
|
|
|
|
|
|
dmabuf = linux_dmabuf_buffer_get(buffer->resource);
|
|
|
|
if (dmabuf) {
|
2021-09-13 17:52:53 +00:00
|
|
|
fb = drm_fb_get_from_dmabuf(dmabuf, b, is_opaque,
|
2021-11-18 16:01:03 +00:00
|
|
|
&buf_fb->failure_reasons);
|
2019-06-18 10:16:53 +00:00
|
|
|
if (!fb)
|
2021-11-18 16:01:03 +00:00
|
|
|
goto unsuitable;
|
2019-06-18 10:16:53 +00:00
|
|
|
} else {
|
|
|
|
struct gbm_bo *bo;
|
|
|
|
|
|
|
|
bo = gbm_bo_import(b->gbm, GBM_BO_IMPORT_WL_BUFFER,
|
|
|
|
buffer->resource, GBM_BO_USE_SCANOUT);
|
|
|
|
if (!bo)
|
2021-11-18 16:01:03 +00:00
|
|
|
goto unsuitable;
|
2019-06-18 10:16:53 +00:00
|
|
|
|
|
|
|
fb = drm_fb_get_from_bo(bo, b, is_opaque, BUFFER_CLIENT);
|
|
|
|
if (!fb) {
|
|
|
|
gbm_bo_destroy(bo);
|
2021-11-18 16:01:03 +00:00
|
|
|
goto unsuitable;
|
2019-06-18 10:16:53 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2021-11-16 18:56:09 +00:00
|
|
|
/* Check if this buffer can ever go on any planes. If it can't, we have
|
|
|
|
* no reason to ever have a drm_fb, so we fail it here. */
|
|
|
|
wl_list_for_each(plane, &b->plane_list, link) {
|
2021-12-07 17:30:39 +00:00
|
|
|
/* only SHM buffers can go into cursor planes */
|
|
|
|
if (plane->type == WDRM_PLANE_TYPE_CURSOR)
|
|
|
|
continue;
|
2021-11-16 18:56:09 +00:00
|
|
|
if (drm_fb_compatible_with_plane(fb, plane))
|
|
|
|
fb->plane_mask |= (1 << plane->plane_idx);
|
|
|
|
}
|
|
|
|
if (fb->plane_mask == 0) {
|
|
|
|
drm_fb_unref(fb);
|
|
|
|
buf_fb->failure_reasons |= FAILURE_REASONS_FB_FORMAT_INCOMPATIBLE;
|
|
|
|
goto unsuitable;
|
|
|
|
}
|
|
|
|
|
2021-11-18 16:01:03 +00:00
|
|
|
/* The caller holds its own ref to the drm_fb, so when creating a new
|
|
|
|
* drm_fb we take an additional ref for the weston_buffer's cache. */
|
|
|
|
buf_fb->fb = drm_fb_ref(fb);
|
|
|
|
|
2019-06-18 10:16:53 +00:00
|
|
|
drm_debug(b, "\t\t\t[view] view %p format: %s\n",
|
|
|
|
ev, fb->format->drm_format_name);
|
|
|
|
return fb;
|
2021-11-18 16:01:03 +00:00
|
|
|
|
|
|
|
unsuitable:
|
|
|
|
*try_view_on_plane_failure_reasons |= buf_fb->failure_reasons;
|
|
|
|
return NULL;
|
2019-06-18 10:16:53 +00:00
|
|
|
}
|
2019-07-09 20:02:00 +00:00
|
|
|
#endif
|