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127 lines
3.2 KiB
127 lines
3.2 KiB
/**************************************************************************
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*
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* Copyright (C) 2019 Chromium.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*
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**************************************************************************/
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#ifndef _GNU_SOURCE
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#define _GNU_SOURCE 1
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#endif
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#include <stdio.h>
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#include <dirent.h>
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#include <fcntl.h>
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#include <stdlib.h>
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#include <string.h>
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#include <xf86drm.h>
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#include <unistd.h>
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#include "virgl_gbm.h"
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#include "virgl_hw.h"
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#include "vrend_debug.h"
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static int rendernode_open(void)
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{
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DIR *dir;
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struct dirent *dir_ent;
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int ret, fd;
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char *rendernode_name;
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dir = opendir("/dev/dri");
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if (!dir)
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return -1;
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fd = -1;
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while ((dir_ent = readdir(dir))) {
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if (dir_ent->d_type != DT_CHR)
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continue;
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if (strncmp(dir_ent->d_name, "renderD", 7))
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continue;
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ret = asprintf(&rendernode_name, "/dev/dri/%s", dir_ent->d_name);
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if (ret < 0)
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return -1;
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fd = open(rendernode_name, O_RDWR | O_CLOEXEC | O_NOCTTY | O_NONBLOCK);
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if (fd < 0){
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free(rendernode_name);
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continue;
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}
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free(rendernode_name);
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break;
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}
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closedir(dir);
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if (fd < 0)
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return -1;
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return fd;
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}
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struct virgl_gbm *virgl_gbm_init(int fd)
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{
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struct virgl_gbm *gbm = calloc(1, sizeof(struct virgl_gbm));
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if (!gbm)
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return NULL;
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gbm->fd = -1;
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if (fd < 0) {
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gbm->fd = rendernode_open();
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if (gbm->fd < 0)
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goto out_error;
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gbm->device = gbm_create_device(gbm->fd);
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if (!gbm->device) {
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close(gbm->fd);
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goto out_error;
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}
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} else {
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gbm->device = gbm_create_device(fd);
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if (!gbm->device)
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goto out_error;
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}
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return gbm;
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out_error:
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free(gbm);
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return NULL;
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}
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void virgl_gbm_fini(struct virgl_gbm *gbm)
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{
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gbm_device_destroy(gbm->device);
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if (gbm->fd >= 0)
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close(gbm->fd);
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free(gbm);
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}
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uint32_t virgl_gbm_convert_format(uint32_t virgl_format)
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{
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switch (virgl_format) {
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case VIRGL_FORMAT_B8G8R8X8_UNORM:
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case VIRGL_FORMAT_B8G8R8A8_UNORM:
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return GBM_FORMAT_ARGB8888;
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default:
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vrend_printf("unsupported virgl format: %u\n", virgl_format);
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return 0;
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}
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}
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