2 * Copyright © 2008-2010 Kristian Høgsberg
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
28 #include <linux/input.h>
30 #define GL_GLEXT_PROTOTYPES
31 #define EGL_EGLEXT_PROTOTYPES
32 #include <GLES2/gl2.h>
33 #include <GLES2/gl2ext.h>
35 #include <EGL/eglext.h>
37 #include "compositor.h"
39 struct drm_compositor {
40 struct wlsc_compositor base;
43 struct wl_event_source *drm_source;
45 /* tty handling state */
47 uint32_t vt_active : 1;
49 struct termios terminal_attributes;
50 struct wl_event_source *tty_input_source;
51 struct wl_event_source *enter_vt_source;
52 struct wl_event_source *leave_vt_source;
56 struct wlsc_output base;
60 uint32_t connector_id;
68 struct wlsc_input_device base;
71 struct evdev_input_device {
72 struct drm_input *master;
73 struct wl_event_source *source;
74 int tool, new_x, new_y;
79 static void evdev_input_device_data(int fd, uint32_t mask, void *data)
81 struct drm_compositor *c;
82 struct evdev_input_device *device = data;
83 struct input_event ev[8], *e, *end;
84 int len, value, dx, dy, absolute_event;
88 c = (struct drm_compositor *)
89 device->master->base.input_device.compositor;
96 x = device->master->base.input_device.x;
97 y = device->master->base.input_device.y;
99 len = read(fd, &ev, sizeof ev);
100 if (len < 0 || len % sizeof e[0] != 0) {
101 /* FIXME: handle error... reopen device? */;
106 end = (void *) ev + len;
107 for (e = ev; e < end; e++) {
108 /* Get the signed value, earlier kernels had this as unsigned */
110 time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000;
130 device->base_x = x - value;
133 x = device->base_x + value;
137 device->base_y = y - value;
140 y = device->base_y + value;
152 case BTN_TOOL_RUBBER:
154 case BTN_TOOL_PENCIL:
155 case BTN_TOOL_AIRBRUSH:
156 case BTN_TOOL_FINGER:
159 if (device->tool == 0 && value) {
163 device->tool = value ? e->code : 0;
174 notify_button(&device->master->base.input_device,
175 time, e->code, value);
179 notify_key(&device->master->base.input_device,
180 time, e->code, value);
186 if (dx != 0 || dy != 0)
187 notify_motion(&device->master->base.input_device,
188 time, x + dx, y + dy);
189 if (absolute_event && device->tool)
190 notify_motion(&device->master->base.input_device, time, x, y);
193 static struct evdev_input_device *
194 evdev_input_device_create(struct drm_input *master,
195 struct wl_display *display, const char *path)
197 struct evdev_input_device *device;
198 struct wl_event_loop *loop;
200 device = malloc(sizeof *device);
207 device->master = master;
209 device->fd = open(path, O_RDONLY);
210 if (device->fd < 0) {
212 fprintf(stderr, "couldn't create pointer for %s: %m\n", path);
216 loop = wl_display_get_event_loop(display);
217 device->source = wl_event_loop_add_fd(loop, device->fd,
219 evdev_input_device_data, device);
220 if (device->source == NULL) {
230 drm_input_create(struct drm_compositor *c)
232 struct drm_input *input;
233 struct udev_enumerate *e;
234 struct udev_list_entry *entry;
235 struct udev_device *device;
238 input = malloc(sizeof *input);
242 memset(input, 0, sizeof *input);
243 wlsc_input_device_init(&input->base, &c->base);
245 e = udev_enumerate_new(c->udev);
246 udev_enumerate_add_match_subsystem(e, "input");
247 udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
248 udev_enumerate_scan_devices(e);
249 udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
250 path = udev_list_entry_get_name(entry);
251 device = udev_device_new_from_syspath(c->udev, path);
252 evdev_input_device_create(input, c->base.wl_display,
253 udev_device_get_devnode(device));
255 udev_enumerate_unref(e);
257 c->base.input_device = &input->base.input_device;
261 drm_compositor_present(struct wlsc_compositor *ec)
263 struct drm_compositor *c = (struct drm_compositor *) ec;
264 struct drm_output *output;
266 wl_list_for_each(output, &ec->output_list, base.link) {
267 output->current ^= 1;
269 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
270 GL_COLOR_ATTACHMENT0,
272 output->rbo[output->current]);
274 drmModePageFlip(c->base.drm.fd, output->crtc_id,
275 output->fb_id[output->current ^ 1],
276 DRM_MODE_PAGE_FLIP_EVENT, output);
281 page_flip_handler(int fd, unsigned int frame,
282 unsigned int sec, unsigned int usec, void *data)
284 struct wlsc_output *output = data;
285 struct wlsc_compositor *compositor = output->compositor;
288 msecs = sec * 1000 + usec / 1000;
289 wlsc_compositor_finish_frame(compositor, msecs);
293 on_drm_input(int fd, uint32_t mask, void *data)
295 drmEventContext evctx;
297 memset(&evctx, 0, sizeof evctx);
298 evctx.version = DRM_EVENT_CONTEXT_VERSION;
299 evctx.page_flip_handler = page_flip_handler;
300 drmHandleEvent(fd, &evctx);
304 init_egl(struct drm_compositor *ec, struct udev_device *device)
307 const char *extensions, *filename;
309 static const EGLint context_attribs[] = {
310 EGL_CONTEXT_CLIENT_VERSION, 2,
314 filename = udev_device_get_devnode(device);
315 fd = open(filename, O_RDWR);
317 /* Probably permissions error */
318 fprintf(stderr, "couldn't open %s, skipping\n",
319 udev_device_get_devnode(device));
323 wlsc_drm_init(&ec->base, fd, filename);
325 ec->base.display = eglGetDRMDisplayMESA(ec->base.drm.fd);
326 if (ec->base.display == NULL) {
327 fprintf(stderr, "failed to create display\n");
331 if (!eglInitialize(ec->base.display, &major, &minor)) {
332 fprintf(stderr, "failed to initialize display\n");
336 extensions = eglQueryString(ec->base.display, EGL_EXTENSIONS);
337 if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) {
338 fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n");
342 if (!eglBindAPI(EGL_OPENGL_ES_API)) {
343 fprintf(stderr, "failed to bind api EGL_OPENGL_ES_API\n");
347 ec->base.context = eglCreateContext(ec->base.display, NULL,
348 EGL_NO_CONTEXT, context_attribs);
349 if (ec->base.context == NULL) {
350 fprintf(stderr, "failed to create context\n");
354 if (!eglMakeCurrent(ec->base.display, EGL_NO_SURFACE,
355 EGL_NO_SURFACE, ec->base.context)) {
356 fprintf(stderr, "failed to make context current\n");
363 static drmModeModeInfo builtin_1024x768 = {
365 1024, 1072, 1176, 1328, 0,
366 768, 771, 775, 798, 0,
368 DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC,
374 create_output_for_connector(struct drm_compositor *ec,
375 drmModeRes *resources,
376 drmModeConnector *connector)
378 struct drm_output *output;
379 drmModeEncoder *encoder;
380 drmModeModeInfo *mode;
382 EGLint handle, stride, attribs[] = {
385 EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
386 EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SCANOUT_MESA,
390 output = malloc(sizeof *output);
394 if (connector->count_modes > 0)
395 mode = &connector->modes[0];
397 mode = &builtin_1024x768;
399 encoder = drmModeGetEncoder(ec->base.drm.fd, connector->encoders[0]);
400 if (encoder == NULL) {
401 fprintf(stderr, "No encoder for connector.\n");
405 for (i = 0; i < resources->count_crtcs; i++) {
406 if (encoder->possible_crtcs & (1 << i))
409 if (i == resources->count_crtcs) {
410 fprintf(stderr, "No usable crtc for encoder.\n");
414 memset(output, 0, sizeof *output);
415 wlsc_output_init(&output->base, &ec->base, 0, 0,
416 mode->hdisplay, mode->vdisplay);
418 output->crtc_id = resources->crtcs[i];
419 output->connector_id = connector->connector_id;
420 output->mode = *mode;
422 drmModeFreeEncoder(encoder);
424 glGenRenderbuffers(2, output->rbo);
425 for (i = 0; i < 2; i++) {
426 glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]);
428 attribs[1] = output->base.width;
429 attribs[3] = output->base.height;
431 eglCreateDRMImageMESA(ec->base.display, attribs);
432 glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
434 eglExportDRMImageMESA(ec->base.display, output->image[i],
435 NULL, &handle, &stride);
437 ret = drmModeAddFB(ec->base.drm.fd,
438 output->base.width, output->base.height,
439 32, 32, stride, handle, &output->fb_id[i]);
441 fprintf(stderr, "failed to add fb %d: %m\n", i);
447 glFramebufferRenderbuffer(GL_FRAMEBUFFER,
448 GL_COLOR_ATTACHMENT0,
450 output->rbo[output->current]);
451 ret = drmModeSetCrtc(ec->base.drm.fd, output->crtc_id,
452 output->fb_id[output->current ^ 1], 0, 0,
453 &output->connector_id, 1, &output->mode);
455 fprintf(stderr, "failed to set mode: %m\n");
459 wl_list_insert(ec->base.output_list.prev, &output->base.link);
465 create_outputs(struct drm_compositor *ec, int option_connector)
467 drmModeConnector *connector;
468 drmModeRes *resources;
471 resources = drmModeGetResources(ec->base.drm.fd);
473 fprintf(stderr, "drmModeGetResources failed\n");
477 for (i = 0; i < resources->count_connectors; i++) {
478 connector = drmModeGetConnector(ec->base.drm.fd, resources->connectors[i]);
479 if (connector == NULL)
482 if (connector->connection == DRM_MODE_CONNECTED &&
483 (option_connector == 0 ||
484 connector->connector_id == option_connector))
485 if (create_output_for_connector(ec, resources, connector) < 0)
488 drmModeFreeConnector(connector);
491 if (wl_list_empty(&ec->base.output_list)) {
492 fprintf(stderr, "No currently active connector found.\n");
496 drmModeFreeResources(resources);
501 static void on_enter_vt(int signal_number, void *data)
503 struct drm_compositor *ec = data;
504 struct drm_output *output;
507 ret = drmSetMaster(ec->base.drm.fd);
509 fprintf(stderr, "failed to set drm master\n");
514 fprintf(stderr, "enter vt\n");
516 ioctl(ec->tty_fd, VT_RELDISP, VT_ACKACQ);
517 ret = ioctl(ec->tty_fd, KDSETMODE, KD_GRAPHICS);
519 fprintf(stderr, "failed to set KD_GRAPHICS mode on console: %m\n");
522 wl_list_for_each(output, &ec->base.output_list, base.link) {
523 ret = drmModeSetCrtc(ec->base.drm.fd, output->crtc_id,
524 output->fb_id[output->current ^ 1], 0, 0,
525 &output->connector_id, 1, &output->mode);
528 "failed to set mode for connector %d: %m\n",
529 output->connector_id);
533 static void on_leave_vt(int signal_number, void *data)
535 struct drm_compositor *ec = data;
538 ret = drmDropMaster(ec->base.drm.fd);
540 fprintf(stderr, "failed to drop drm master\n");
545 ioctl (ec->tty_fd, VT_RELDISP, 1);
546 ret = ioctl(ec->tty_fd, KDSETMODE, KD_TEXT);
548 fprintf(stderr, "failed to set KD_TEXT mode on console: %m\n");
553 on_tty_input(int fd, uint32_t mask, void *data)
555 struct drm_compositor *ec = data;
557 /* Ignore input to tty. We get keyboard events from evdev
559 tcflush(ec->tty_fd, TCIFLUSH);
562 static int setup_tty(struct drm_compositor *ec, struct wl_event_loop *loop)
564 struct termios raw_attributes;
565 struct vt_mode mode = { 0 };
568 ec->tty_fd = open("/dev/tty0", O_RDWR | O_NOCTTY);
569 if (ec->tty_fd <= 0) {
570 fprintf(stderr, "failed to open active tty: %m\n");
574 if (tcgetattr(ec->tty_fd, &ec->terminal_attributes) < 0) {
575 fprintf(stderr, "could not get terminal attributes: %m\n");
579 /* Ignore control characters and disable echo */
580 raw_attributes = ec->terminal_attributes;
581 cfmakeraw(&raw_attributes);
583 /* Fix up line endings to be normal (cfmakeraw hoses them) */
584 raw_attributes.c_oflag |= OPOST | OCRNL;
586 if (tcsetattr(ec->tty_fd, TCSANOW, &raw_attributes) < 0)
587 fprintf(stderr, "could not put terminal into raw mode: %m\n");
589 ec->tty_input_source =
590 wl_event_loop_add_fd(loop, ec->tty_fd,
591 WL_EVENT_READABLE, on_tty_input, ec);
593 ret = ioctl(ec->tty_fd, KDSETMODE, KD_GRAPHICS);
595 fprintf(stderr, "failed to set KD_GRAPHICS mode on tty: %m\n");
598 mode.mode = VT_PROCESS;
599 mode.relsig = SIGUSR1;
600 mode.acqsig = SIGUSR2;
601 if (!ioctl(ec->tty_fd, VT_SETMODE, &mode) < 0) {
602 fprintf(stderr, "failed to take control of vt handling\n");
605 ec->leave_vt_source =
606 wl_event_loop_add_signal(loop, SIGUSR1, on_leave_vt, ec);
607 ec->enter_vt_source =
608 wl_event_loop_add_signal(loop, SIGUSR2, on_enter_vt, ec);
614 drm_authenticate(struct wlsc_compositor *c, uint32_t id)
616 struct drm_compositor *ec = (struct drm_compositor *) c;
618 return drmAuthMagic(ec->base.drm.fd, id);
622 drm_destroy(struct wlsc_compositor *ec)
624 struct drm_compositor *d = (struct drm_compositor *) ec;
626 if (tcsetattr(d->tty_fd, TCSANOW, &d->terminal_attributes) < 0)
628 "could not restore terminal to canonical mode\n");
633 struct wlsc_compositor *
634 drm_compositor_create(struct wl_display *display, int connector)
636 struct drm_compositor *ec;
637 struct udev_enumerate *e;
638 struct udev_list_entry *entry;
639 struct udev_device *device;
641 struct wl_event_loop *loop;
643 ec = malloc(sizeof *ec);
647 memset(ec, 0, sizeof *ec);
648 ec->udev = udev_new();
649 if (ec->udev == NULL) {
650 fprintf(stderr, "failed to initialize udev context\n");
654 e = udev_enumerate_new(ec->udev);
655 udev_enumerate_add_match_subsystem(e, "drm");
656 udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1");
657 udev_enumerate_scan_devices(e);
659 udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) {
660 path = udev_list_entry_get_name(entry);
661 device = udev_device_new_from_syspath(ec->udev, path);
664 udev_enumerate_unref(e);
666 if (device == NULL) {
667 fprintf(stderr, "no drm device found\n");
671 ec->base.wl_display = display;
672 if (init_egl(ec, device) < 0) {
673 fprintf(stderr, "failed to initialize egl\n");
677 /* Can't init base class until we have a current egl context */
678 if (wlsc_compositor_init(&ec->base, display) < 0)
681 if (create_outputs(ec, connector) < 0) {
682 fprintf(stderr, "failed to create output for %s\n", path);
686 drm_input_create(ec);
688 loop = wl_display_get_event_loop(ec->base.wl_display);
690 wl_event_loop_add_fd(loop, ec->base.drm.fd,
691 WL_EVENT_READABLE, on_drm_input, ec);
693 ec->base.destroy = drm_destroy;
694 ec->base.authenticate = drm_authenticate;
695 ec->base.present = drm_compositor_present;