2011-05-26 14:10:50 +01:00
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/*
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* Copyright © 2011 Intel Corporation
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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 (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* 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
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*
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* Authors:
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* Benjamin Franzke <benjaminfranzke@googlemail.com>
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <stddef.h>
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#include <stdint.h>
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#include <string.h>
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#include <limits.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <dlfcn.h>
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#include <GL/gl.h> /* dri_interface needs GL types */
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#include <GL/internal/dri_interface.h>
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#include "gbm_driint.h"
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#include "gbmint.h"
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static __DRIimage *
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dri_lookup_egl_image(__DRIscreen *screen, void *image, void *data)
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{
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struct gbm_dri_device *dri = data;
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if (dri->lookup_image == NULL)
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return NULL;
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return dri->lookup_image(screen, image, dri->lookup_user_data);
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}
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const __DRIuseInvalidateExtension use_invalidate = {
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{ __DRI_USE_INVALIDATE, 1 }
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};
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const __DRIimageLookupExtension image_lookup_extension = {
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{ __DRI_IMAGE_LOOKUP, 1 },
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dri_lookup_egl_image
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};
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struct dri_extension_match {
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const char *name;
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int version;
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int offset;
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};
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static struct dri_extension_match dri_core_extensions[] = {
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{ __DRI_IMAGE, 1, offsetof(struct gbm_dri_device, image) },
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{ NULL, 0, 0 }
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};
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static struct dri_extension_match gbm_dri_device_extensions[] = {
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{ __DRI_CORE, 1, offsetof(struct gbm_dri_device, core) },
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{ __DRI_DRI2, 1, offsetof(struct gbm_dri_device, dri2) },
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{ NULL, 0, 0 }
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};
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static int
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dri_bind_extensions(struct gbm_dri_device *dri,
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struct dri_extension_match *matches,
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const __DRIextension **extensions)
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{
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int i, j, ret = 0;
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void *field;
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for (i = 0; extensions[i]; i++) {
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for (j = 0; matches[j].name; j++) {
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if (strcmp(extensions[i]->name, matches[j].name) == 0 &&
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extensions[i]->version >= matches[j].version) {
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field = ((char *) dri + matches[j].offset);
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*(const __DRIextension **) field = extensions[i];
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}
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}
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}
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for (j = 0; matches[j].name; j++) {
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field = ((char *) dri + matches[j].offset);
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if (*(const __DRIextension **) field == NULL) {
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ret = -1;
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}
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}
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return ret;
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}
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static int
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dri_load_driver(struct gbm_dri_device *dri)
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{
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const __DRIextension **extensions;
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char path[PATH_MAX], *search_paths, *p, *next, *end;
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search_paths = NULL;
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if (geteuid() == getuid()) {
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/* don't allow setuid apps to use GBM_DRIVERS_PATH */
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search_paths = getenv("GBM_DRIVERS_PATH");
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}
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if (search_paths == NULL)
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search_paths = DEFAULT_DRIVER_DIR;
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dri->driver = NULL;
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end = search_paths + strlen(search_paths);
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for (p = search_paths; p < end && dri->driver == NULL; p = next + 1) {
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int len;
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next = strchr(p, ':');
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if (next == NULL)
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next = end;
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len = next - p;
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#if GLX_USE_TLS
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snprintf(path, sizeof path,
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"%.*s/tls/%s_dri.so", len, p, dri->base.driver_name);
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dri->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
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#endif
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if (dri->driver == NULL) {
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snprintf(path, sizeof path,
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"%.*s/%s_dri.so", len, p, dri->base.driver_name);
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dri->driver = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
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if (dri->driver == NULL)
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fprintf(stderr, "failed to open %s: %s\n", path, dlerror());
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}
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}
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if (dri->driver == NULL) {
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fprintf(stderr, "gbm: failed to open any driver (search paths %s)",
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search_paths);
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return -1;
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}
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extensions = dlsym(dri->driver, __DRI_DRIVER_EXTENSIONS);
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if (extensions == NULL) {
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fprintf(stderr, "gbm: driver exports no extensions (%s)", dlerror());
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dlclose(dri->driver);
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return -1;
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}
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if (dri_bind_extensions(dri, gbm_dri_device_extensions, extensions) < 0) {
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dlclose(dri->driver);
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fprintf(stderr, "failed to bind extensions\n");
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return -1;
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}
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return 0;
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}
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static int
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dri_screen_create(struct gbm_dri_device *dri)
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{
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const __DRIextension **extensions;
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int ret = 0;
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dri->base.driver_name = dri_fd_get_driver_name(dri->base.base.fd);
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if (dri->base.driver_name == NULL)
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return -1;
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ret = dri_load_driver(dri);
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if (ret) {
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fprintf(stderr, "failed to load driver: %s\n", dri->base.driver_name);
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return ret;
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};
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dri->extensions[0] = &image_lookup_extension.base;
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dri->extensions[1] = &use_invalidate.base;
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dri->extensions[2] = NULL;
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if (dri->dri2 == NULL)
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return -1;
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dri->screen = dri->dri2->createNewScreen(0, dri->base.base.fd,
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dri->extensions,
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&dri->driver_configs, dri);
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2011-07-31 22:49:43 +01:00
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if (dri->screen == NULL)
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return -1;
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2011-05-26 14:10:50 +01:00
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extensions = dri->core->getExtensions(dri->screen);
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if (dri_bind_extensions(dri, dri_core_extensions, extensions) < 0) {
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ret = -1;
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goto free_screen;
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}
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dri->lookup_image = NULL;
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dri->lookup_user_data = NULL;
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return 0;
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free_screen:
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dri->core->destroyScreen(dri->screen);
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return ret;
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}
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static int
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gbm_dri_is_format_supported(struct gbm_device *gbm,
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enum gbm_bo_format format,
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uint32_t usage)
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{
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switch (format) {
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case GBM_BO_FORMAT_XRGB8888:
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break;
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case GBM_BO_FORMAT_ARGB8888:
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if (usage & GBM_BO_USE_SCANOUT)
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return 0;
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break;
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default:
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return 0;
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}
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if (usage & GBM_BO_USE_CURSOR_64X64 &&
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usage & GBM_BO_USE_RENDERING)
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return 0;
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return 1;
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}
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static void
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gbm_dri_bo_destroy(struct gbm_bo *_bo)
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{
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struct gbm_dri_device *dri = gbm_dri_device(_bo->gbm);
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struct gbm_dri_bo *bo = gbm_dri_bo(_bo);
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dri->image->destroyImage(bo->image);
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free(bo);
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}
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static struct gbm_bo *
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gbm_dri_bo_create_from_egl_image(struct gbm_device *gbm,
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void *egl_dpy, void *egl_img,
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uint32_t width, uint32_t height,
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uint32_t usage)
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{
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struct gbm_dri_device *dri = gbm_dri_device(gbm);
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struct gbm_dri_bo *bo;
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2012-01-18 20:32:35 +00:00
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unsigned dri_use = 0;
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2011-05-26 14:10:50 +01:00
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(void) egl_dpy;
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if (dri->lookup_image == NULL)
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return NULL;
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bo = calloc(1, sizeof *bo);
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if (bo == NULL)
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return NULL;
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bo->base.base.gbm = gbm;
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bo->base.base.width = width;
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bo->base.base.height = height;
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__DRIimage *tmp = dri->lookup_image(dri->screen, egl_img,
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dri->lookup_user_data);
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bo->image = dri->image->dupImage(tmp, bo);
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if (bo->image == NULL)
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return NULL;
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2012-01-18 20:32:35 +00:00
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if (usage & GBM_BO_USE_SCANOUT)
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dri_use |= __DRI_IMAGE_USE_SCANOUT;
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if (usage & GBM_BO_USE_CURSOR_64X64)
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dri_use |= __DRI_IMAGE_USE_CURSOR;
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if (dri->image->base.version >= 2 &&
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!dri->image->validateUsage(bo->image, dri_use)) {
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free(bo);
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return NULL;
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}
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2011-05-26 14:10:50 +01:00
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dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE,
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&bo->base.base.handle.s32);
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dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE,
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(int *) &bo->base.base.pitch);
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return &bo->base.base;
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}
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static struct gbm_bo *
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gbm_dri_bo_create(struct gbm_device *gbm,
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uint32_t width, uint32_t height,
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enum gbm_bo_format format, uint32_t usage)
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{
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struct gbm_dri_device *dri = gbm_dri_device(gbm);
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struct gbm_dri_bo *bo;
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int dri_format;
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unsigned dri_use = 0;
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bo = calloc(1, sizeof *bo);
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if (bo == NULL)
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return NULL;
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bo->base.base.gbm = gbm;
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bo->base.base.width = width;
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bo->base.base.height = height;
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switch (format) {
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case GBM_BO_FORMAT_XRGB8888:
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dri_format = __DRI_IMAGE_FORMAT_XRGB8888;
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break;
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case GBM_BO_FORMAT_ARGB8888:
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dri_format = __DRI_IMAGE_FORMAT_ARGB8888;
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break;
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default:
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return NULL;
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}
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if (usage & GBM_BO_USE_SCANOUT)
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dri_use |= __DRI_IMAGE_USE_SCANOUT;
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if (usage & GBM_BO_USE_CURSOR_64X64)
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dri_use |= __DRI_IMAGE_USE_CURSOR;
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bo->image =
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dri->image->createImage(dri->screen,
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width, height,
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dri_format, dri_use,
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bo);
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if (bo->image == NULL)
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return NULL;
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dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_HANDLE,
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&bo->base.base.handle.s32);
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dri->image->queryImage(bo->image, __DRI_IMAGE_ATTRIB_STRIDE,
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(int *) &bo->base.base.pitch);
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return &bo->base.base;
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}
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static void
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dri_destroy(struct gbm_device *gbm)
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{
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struct gbm_dri_device *dri = gbm_dri_device(gbm);
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dri->core->destroyScreen(dri->screen);
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free(dri->driver_configs);
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dlclose(dri->driver);
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free(dri->base.driver_name);
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free(dri);
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}
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static struct gbm_device *
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dri_device_create(int fd)
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{
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struct gbm_dri_device *dri;
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int ret;
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dri = calloc(1, sizeof *dri);
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dri->base.base.fd = fd;
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dri->base.base.bo_create = gbm_dri_bo_create;
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dri->base.base.bo_create_from_egl_image = gbm_dri_bo_create_from_egl_image;
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dri->base.base.is_format_supported = gbm_dri_is_format_supported;
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dri->base.base.bo_destroy = gbm_dri_bo_destroy;
|
|
|
|
dri->base.base.destroy = dri_destroy;
|
|
|
|
|
|
|
|
dri->base.type = GBM_DRM_DRIVER_TYPE_DRI;
|
|
|
|
dri->base.base.name = "drm";
|
|
|
|
|
|
|
|
ret = dri_screen_create(dri);
|
|
|
|
if (ret) {
|
|
|
|
free(dri);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return &dri->base.base;
|
|
|
|
}
|
|
|
|
|
|
|
|
struct gbm_backend gbm_dri_backend = {
|
|
|
|
.backend_name = "dri",
|
|
|
|
.create_device = dri_device_create,
|
|
|
|
};
|