+#ifdef HAVE_LIBUDEV
+
+struct dri2_driver_map {
+ int vendor_id;
+ const char *driver;
+ const int *chip_ids;
+ int num_chips_ids;
+};
+
+const int i915_chip_ids[] = {
+ 0x3577, /* PCI_CHIP_I830_M */
+ 0x2562, /* PCI_CHIP_845_G */
+ 0x3582, /* PCI_CHIP_I855_GM */
+ 0x2572, /* PCI_CHIP_I865_G */
+ 0x2582, /* PCI_CHIP_I915_G */
+ 0x258a, /* PCI_CHIP_E7221_G */
+ 0x2592, /* PCI_CHIP_I915_GM */
+ 0x2772, /* PCI_CHIP_I945_G */
+ 0x27a2, /* PCI_CHIP_I945_GM */
+ 0x27ae, /* PCI_CHIP_I945_GME */
+ 0x29b2, /* PCI_CHIP_Q35_G */
+ 0x29c2, /* PCI_CHIP_G33_G */
+ 0x29d2, /* PCI_CHIP_Q33_G */
+ 0xa011, /* Pineview */
+};
+
+const int i965_chip_ids[] = {
+ 0x29a2, /* PCI_CHIP_I965_G */
+ 0x2992, /* PCI_CHIP_I965_Q */
+ 0x2982, /* PCI_CHIP_I965_G_1 */
+ 0x2972, /* PCI_CHIP_I946_GZ */
+ 0x2a02, /* PCI_CHIP_I965_GM */
+ 0x2a12, /* PCI_CHIP_I965_GME */
+ 0x2a42, /* PCI_CHIP_GM45_GM */
+ 0x2e02, /* PCI_CHIP_IGD_E_G */
+ 0x2e12, /* PCI_CHIP_Q45_G */
+ 0x2e22, /* PCI_CHIP_G45_G */
+ 0x2e32, /* PCI_CHIP_G41_G */
+};
+
+const struct dri2_driver_map driver_map[] = {
+ { 0x8086, "i915", i915_chip_ids, ARRAY_SIZE(i915_chip_ids) },
+ { 0x8086, "i965", i965_chip_ids, ARRAY_SIZE(i965_chip_ids) },
+};
+
+static char *
+dri2_get_driver_for_fd(int fd)
+{
+ struct udev *udev;
+ struct udev_device *device, *parent;
+ struct stat buf;
+ const char *pci_id;
+ char *driver = NULL;
+ int vendor_id, chip_id, i, j;
+
+ udev = udev_new();
+ if (fstat(fd, &buf) < 0) {
+ _eglLog(_EGL_WARNING, "EGL-DRI2: failed to stat fd %d", fd);
+ goto out;
+ }
+
+ device = udev_device_new_from_devnum(udev, 'c', buf.st_rdev);
+ if (device == NULL) {
+ _eglLog(_EGL_WARNING,
+ "EGL-DRI2: could not create udev device for fd %d", fd);
+ goto out;
+ }
+
+ parent = udev_device_get_parent(device);
+ if (parent == NULL) {
+ _eglLog(_EGL_WARNING, "DRI2: could not get parent device");
+ goto out;
+ }
+
+ pci_id = udev_device_get_property_value(parent, "PCI_ID");
+ if (pci_id == NULL || sscanf(pci_id, "%x:%x", &vendor_id, &chip_id) != 2) {
+ _eglLog(_EGL_WARNING, "EGL-DRI2: malformed or no PCI ID");
+ goto out;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(driver_map); i++) {
+ if (vendor_id != driver_map[i].vendor_id)
+ continue;
+ for (j = 0; j < driver_map[i].num_chips_ids; j++)
+ if (driver_map[i].chip_ids[j] == chip_id) {
+ driver = strdup(driver_map[i].driver);
+ _eglLog(_EGL_DEBUG, "pci id for %d: %04x:%04x, driver %s",
+ fd, vendor_id, chip_id, driver);
+ goto out;
+ }
+ }
+
+ out:
+ udev_device_unref(device);
+ udev_unref(udev);
+
+ return driver;
+}
+
+static EGLBoolean
+dri2_initialize_drm(_EGLDriver *drv, _EGLDisplay *disp,
+ EGLint *major, EGLint *minor)
+{
+ struct dri2_egl_display *dri2_dpy;
+ int i;
+
+ dri2_dpy = malloc(sizeof *dri2_dpy);
+ if (!dri2_dpy)
+ return _eglError(EGL_BAD_ALLOC, "eglInitialize");
+
+ disp->DriverData = (void *) dri2_dpy;
+ dri2_dpy->fd = (int) disp->PlatformDisplay;
+
+ dri2_dpy->driver_name = dri2_get_driver_for_fd(dri2_dpy->fd);
+ if (dri2_dpy->driver_name == NULL)
+ return _eglError(EGL_BAD_ALLOC, "DRI2: failed to get driver name");
+
+ if (!dri2_load_driver(disp))
+ goto cleanup_driver_name;
+
+ dri2_dpy->extensions[0] = &image_lookup_extension.base;
+ dri2_dpy->extensions[1] = &use_invalidate.base;
+ dri2_dpy->extensions[2] = NULL;
+
+ if (!dri2_create_screen(disp))
+ goto cleanup_driver;
+
+ for (i = 0; dri2_dpy->driver_configs[i]; i++)
+ dri2_add_config(disp, dri2_dpy->driver_configs[i], i + 1, 0, 0);
+
+ disp->Extensions.MESA_drm_image = EGL_TRUE;
+ disp->Extensions.KHR_image_base = EGL_TRUE;
+ disp->Extensions.KHR_gl_renderbuffer_image = EGL_TRUE;
+ disp->Extensions.KHR_gl_texture_2D_image = EGL_TRUE;
+
+ /* we're supporting EGL 1.4 */
+ *major = 1;
+ *minor = 4;
+
+ return EGL_TRUE;
+
+ cleanup_driver:
+ dlclose(dri2_dpy->driver);
+ cleanup_driver_name:
+ free(dri2_dpy->driver_name);
+
+ return EGL_FALSE;
+}
+
+#endif
+
+/**
+ * Called via eglInitialize(), GLX_drv->API.Initialize().
+ */
+static EGLBoolean
+dri2_initialize(_EGLDriver *drv, _EGLDisplay *disp,
+ EGLint *major, EGLint *minor)
+{
+ switch (disp->Platform) {
+ case _EGL_PLATFORM_X11:
+ return dri2_initialize_x11(drv, disp, major, minor);
+
+#ifdef HAVE_LIBUDEV
+ case _EGL_PLATFORM_DRM:
+ return dri2_initialize_drm(drv, disp, major, minor);
+#endif
+
+ default:
+ return EGL_FALSE;
+ }
+}
+