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#include "utils.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "egl_tracker.h"
#include "egllog.h"
#include "state_tracker/drm_api.h"
#include "pipe/p_screen.h"
#include "pipe/p_winsys.h"
/** HACK */
void* driDriverAPI;
extern const struct dri_extension card_extensions[];
/*
* Exported functions
*/
/**
* The bootstrap function. Return a new drm_driver object and
* plug in API functions.
*/
_EGLDriver *
_eglMain(_EGLDisplay *dpy, const char *args)
{
struct drm_device *drm;
drm = (struct drm_device *) calloc(1, sizeof(struct drm_device));
if (!drm) {
return NULL;
}
/* First fill in the dispatch table with defaults */
_eglInitDriverFallbacks(&drm->base);
/* then plug in our Drm-specific functions */
drm->base.API.Initialize = drm_initialize;
drm->base.API.Terminate = drm_terminate;
drm->base.API.CreateContext = drm_create_context;
drm->base.API.MakeCurrent = drm_make_current;
drm->base.API.CreateWindowSurface = drm_create_window_surface;
drm->base.API.CreatePixmapSurface = drm_create_pixmap_surface;
drm->base.API.CreatePbufferSurface = drm_create_pbuffer_surface;
drm->base.API.DestroySurface = drm_destroy_surface;
drm->base.API.DestroyContext = drm_destroy_context;
drm->base.API.CreateScreenSurfaceMESA = drm_create_screen_surface_mesa;
drm->base.API.ShowScreenSurfaceMESA = drm_show_screen_surface_mesa;
drm->base.API.SwapBuffers = drm_swap_buffers;
drm->base.ClientAPIsMask = EGL_OPENGL_BIT /*| EGL_OPENGL_ES_BIT*/;
drm->base.Name = "DRM/Gallium/Win";
/* enable supported extensions */
drm->base.Extensions.MESA_screen_surface = EGL_TRUE;
drm->base.Extensions.MESA_copy_context = EGL_TRUE;
return &drm->base;
}
static void
drm_get_device_id(struct drm_device *device)
{
char path[512];
FILE *file;
/* TODO get the real minor */
int minor = 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;
}
fgets(path, sizeof( path ), file);
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)
{
struct drm_mode_modeinfo *m;
int i;
for (i = 0; i < connector->count_modes; i++) {
m = &connector->modes[i];
_eglAddNewMode(screen, m->hdisplay, m->vdisplay, m->vrefresh, m->name);
}
}
EGLBoolean
drm_initialize(_EGLDriver *drv, EGLDisplay dpy, EGLint *major, EGLint *minor)
{
_EGLDisplay *disp = _eglLookupDisplay(dpy);
struct drm_device *dev = (struct drm_device *)drv;
struct drm_screen *screen = NULL;
drmModeConnectorPtr connector = NULL;
drmModeResPtr res = NULL;
unsigned count_connectors = 0;
int num_screens = 0;
EGLint i;
int fd;
fd = drmOpen("i915", NULL);
if (fd < 0)
goto err_fd;
dev->drmFD = fd;
drm_get_device_id(dev);
dev->screen = drm_api_hocks.create_screen(dev->drmFD, dev->deviceID);
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);
dev->screens[num_screens++] = screen;
}
dev->count_screens = num_screens;
/* 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);
drv->Initialized = EGL_TRUE;
*major = 1;
*minor = 4;
return EGL_TRUE;
err_screen:
drmClose(fd);
err_fd:
return EGL_FALSE;
}
EGLBoolean
drm_terminate(_EGLDriver *drv, EGLDisplay dpy)
{
struct drm_device *dev = (struct drm_device *)drv;
struct drm_screen *screen;
int i = 0;
drmFreeVersion(dev->version);
for (i = 0; i < dev->count_screens; i++) {
screen = dev->screens[i];
if (screen->shown)
drm_takedown_shown_screen(drv, screen);
drmModeFreeConnector(screen->connector);
_eglDestroyScreen(&screen->base);
dev->screens[i] = NULL;
}
dev->screen->destroy(dev->screen);
dev->winsys = NULL;
drmClose(dev->drmFD);
_eglCleanupDisplay(_eglLookupDisplay(dpy));
free(dev);
return EGL_TRUE;
}
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