1 files changed, 271 insertions, 0 deletions

diff --git a/src/gallium/state_trackers/egl/egl_tracker.c b/src/gallium/state_trackers/egl/egl_tracker.c
new file mode 100644
index 0000000000..5140755001
--- /dev/null
+++ b/src/gallium/state_trackers/egl/egl_tracker.c
@@ -0,0 +1,271 @@
+
+#include "utils.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include "egl_tracker.h"
+
+#include <fcntl.h>
+
+#include "egllog.h"
+#include "state_tracker/drm_api.h"
+
+#include "pipe/p_screen.h"
+#include "pipe/internal/p_winsys_screen.h"
+
+/** HACK */
+void* driDriverAPI;
+extern const struct dri_extension card_extensions[];
+
+
+/*
+ * Exported functions
+ */
+
+static void
+drm_unload(_EGLDriver *drv)
+{
+	free(drv);
+}
+
+/**
+ * The bootstrap function.  Return a new drm_driver object and
+ * plug in API functions.
+ */
+_EGLDriver *
+_eglMain(const char *args)
+{
+	_EGLDriver *drv;
+
+	drv = (_EGLDriver *) calloc(1, sizeof(_EGLDriver));
+	if (!drv) {
+		return NULL;
+	}
+
+	/* First fill in the dispatch table with defaults */
+	_eglInitDriverFallbacks(drv);
+	/* then plug in our Drm-specific functions */
+	drv->API.Initialize = drm_initialize;
+	drv->API.Terminate = drm_terminate;
+	drv->API.CreateContext = drm_create_context;
+	drv->API.MakeCurrent = drm_make_current;
+	drv->API.CreateWindowSurface = drm_create_window_surface;
+	drv->API.CreatePixmapSurface = drm_create_pixmap_surface;
+	drv->API.CreatePbufferSurface = drm_create_pbuffer_surface;
+	drv->API.DestroySurface = drm_destroy_surface;
+	drv->API.DestroyContext = drm_destroy_context;
+	drv->API.CreateScreenSurfaceMESA = drm_create_screen_surface_mesa;
+	drv->API.ShowScreenSurfaceMESA = drm_show_screen_surface_mesa;
+	drv->API.SwapBuffers = drm_swap_buffers;
+
+	drv->Name = "DRM/Gallium/Win";
+	drv->Unload = drm_unload;
+
+	return drv;
+}
+
+static void
+drm_get_device_id(struct drm_device *device)
+{
+	char path[512];
+	FILE *file;
+	char *ret;
+
+	/* TODO get the real minor */
+	int minor = 0;
+
+	device->deviceID = 0;
+
+	snprintf(path, sizeof(path), "/sys/class/drm/card%d/device/device", minor);
+	file = fopen(path, "r");
+	if (!file) {
+		_eglLog(_EGL_WARNING, "Could not retrive device ID\n");
+		return;
+	}
+
+	ret = fgets(path, sizeof( path ), file);
+	if (!ret)
+		return;
+
+	sscanf(path, "%x", &device->deviceID);
+	fclose(file);
+}
+
+static void
+drm_update_res(struct drm_device *dev)
+{
+	drmModeFreeResources(dev->res);
+	dev->res = drmModeGetResources(dev->drmFD);
+}
+
+static void
+drm_add_modes_from_connector(_EGLScreen *screen, drmModeConnectorPtr connector)
+{
+	drmModeModeInfoPtr m = NULL;
+	int i;
+
+	for (i = 0; i < connector->count_modes; i++) {
+		m = &connector->modes[i];
+		_eglAddNewMode(screen, m->hdisplay, m->vdisplay, m->vrefresh, m->name);
+	}
+}
+
+static void
+drm_find_dpms(struct drm_device *dev, struct drm_screen *screen)
+{
+	drmModeConnectorPtr c = screen->connector;
+	drmModePropertyPtr p;
+	int i;
+
+	for (i = 0; i < c->count_props; i++) {
+		p = drmModeGetProperty(dev->drmFD, c->props[i]);
+		if (!strcmp(p->name, "DPMS"))
+			break;
+
+		drmModeFreeProperty(p);
+		p = NULL;
+	}
+
+	screen->dpms = p;
+}
+
+static int drm_open_minor(int minor)
+{
+	char buf[64];
+
+	sprintf(buf, DRM_DEV_NAME, DRM_DIR_NAME, minor);
+	return open(buf, O_RDWR, 0);
+}
+
+EGLBoolean
+drm_initialize(_EGLDriver *drv, _EGLDisplay *disp, EGLint *major, EGLint *minor)
+{
+	struct drm_device *dev;
+	struct drm_screen *screen = NULL;
+	drmModeConnectorPtr connector = NULL;
+	drmModeResPtr res = NULL;
+	unsigned count_connectors = 0;
+	int num_screens = 0;
+	EGLint i;
+	int fd;
+
+	dev = (struct drm_device *) calloc(1, sizeof(struct drm_device));
+	if (!dev)
+		return EGL_FALSE;
+	dev->api = drm_api_create();
+
+	/* try the first node */
+	fd = drm_open_minor(0);
+	if (fd < 0)
+		goto err_fd;
+
+	dev->drmFD = fd;
+	drm_get_device_id(dev);
+
+	dev->screen = dev->api->create_screen(dev->api, dev->drmFD, NULL);
+	if (!dev->screen)
+		goto err_screen;
+	dev->winsys = dev->screen->winsys;
+
+	/* TODO HACK */
+	driInitExtensions(NULL, card_extensions, GL_FALSE);
+
+	drm_update_res(dev);
+	res = dev->res;
+	if (res)
+		count_connectors = res->count_connectors;
+	else
+		_eglLog(_EGL_WARNING, "Could not retrive kms information\n");
+
+	for(i = 0; i < count_connectors && i < MAX_SCREENS; i++) {
+		connector = drmModeGetConnector(fd, res->connectors[i]);
+
+		if (!connector)
+			continue;
+
+		if (connector->connection != DRM_MODE_CONNECTED) {
+			drmModeFreeConnector(connector);
+			continue;
+		}
+
+		screen = malloc(sizeof(struct drm_screen));
+		memset(screen, 0, sizeof(*screen));
+		screen->connector = connector;
+		screen->connectorID = connector->connector_id;
+		_eglInitScreen(&screen->base);
+		_eglAddScreen(disp, &screen->base);
+		drm_add_modes_from_connector(&screen->base, connector);
+		drm_find_dpms(dev, screen);
+		dev->screens[num_screens++] = screen;
+	}
+	dev->count_screens = num_screens;
+
+	disp->DriverData = dev;
+
+	/* for now we only have one config */
+	_EGLConfig *config = calloc(1, sizeof(*config));
+	memset(config, 1, sizeof(*config));
+	_eglInitConfig(config, 1);
+	_eglSetConfigAttrib(config, EGL_RED_SIZE, 8);
+	_eglSetConfigAttrib(config, EGL_GREEN_SIZE, 8);
+	_eglSetConfigAttrib(config, EGL_BLUE_SIZE, 8);
+	_eglSetConfigAttrib(config, EGL_ALPHA_SIZE, 8);
+	_eglSetConfigAttrib(config, EGL_BUFFER_SIZE, 32);
+	_eglSetConfigAttrib(config, EGL_DEPTH_SIZE, 24);
+	_eglSetConfigAttrib(config, EGL_STENCIL_SIZE, 8);
+	_eglSetConfigAttrib(config, EGL_SURFACE_TYPE, EGL_PBUFFER_BIT);
+	_eglAddConfig(disp, config);
+
+	disp->ClientAPIsMask = EGL_OPENGL_BIT /*| EGL_OPENGL_ES_BIT*/;
+	/* enable supported extensions */
+	disp->Extensions.MESA_screen_surface = EGL_TRUE;
+	disp->Extensions.MESA_copy_context = EGL_TRUE;
+
+	*major = 1;
+	*minor = 4;
+
+	return EGL_TRUE;
+
+err_screen:
+	drmClose(fd);
+err_fd:
+	free(dev);
+	return EGL_FALSE;
+}
+
+EGLBoolean
+drm_terminate(_EGLDriver *drv, _EGLDisplay *dpy)
+{
+	struct drm_device *dev = lookup_drm_device(dpy);
+	struct drm_screen *screen;
+	int i = 0;
+
+	_eglReleaseDisplayResources(drv, dpy);
+	_eglCleanupDisplay(dpy);
+
+	drmFreeVersion(dev->version);
+
+	for (i = 0; i < dev->count_screens; i++) {
+		screen = dev->screens[i];
+
+		if (screen->shown)
+			drm_takedown_shown_screen(dpy, screen);
+
+		drmModeFreeProperty(screen->dpms);
+		drmModeFreeConnector(screen->connector);
+		_eglDestroyScreen(&screen->base);
+		dev->screens[i] = NULL;
+	}
+
+	dev->screen->destroy(dev->screen);
+	dev->winsys = NULL;
+
+	drmClose(dev->drmFD);
+
+	dev->api->destroy(dev->api);
+	free(dev);
+	dpy->DriverData = NULL;
+
+	return EGL_TRUE;
+}