/* * Copyright © 2008-2010 Kristian Høgsberg * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software Foundation, * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include #include #include #include #include #include #include #include #define GL_GLEXT_PROTOTYPES #define EGL_EGLEXT_PROTOTYPES #include #include #include #include #include "wayland.h" #include "compositor.h" struct drm_compositor { struct wlsc_compositor base; struct udev *udev; struct wl_event_source *drm_source; int drm_fd; struct wl_event_source *term_signal_source; /* tty handling state */ int tty_fd; uint32_t vt_active : 1; struct termios terminal_attributes; struct wl_event_source *tty_input_source; struct wl_event_source *enter_vt_source; struct wl_event_source *leave_vt_source; }; struct drm_output { struct wlsc_output base; drmModeModeInfo mode; uint32_t crtc_id; uint32_t connector_id; GLuint rbo[2]; uint32_t fb_id[2]; EGLImageKHR image[2]; uint32_t current; }; struct drm_input { struct wlsc_input_device base; }; struct evdev_input_device { struct drm_input *master; struct wl_event_source *source; int tool, new_x, new_y; int base_x, base_y; int fd; }; static void evdev_input_device_data(int fd, uint32_t mask, void *data) { struct drm_compositor *c; struct evdev_input_device *device = data; struct input_event ev[8], *e, *end; int len, value, dx, dy, absolute_event; int x, y; uint32_t time; c = (struct drm_compositor *) device->master->base.ec; if (!c->vt_active) return; dx = 0; dy = 0; absolute_event = 0; x = device->master->base.x; y = device->master->base.y; len = read(fd, &ev, sizeof ev); if (len < 0 || len % sizeof e[0] != 0) { /* FIXME: handle error... reopen device? */; return; } e = ev; end = (void *) ev + len; for (e = ev; e < end; e++) { /* Get the signed value, earlier kernels had this as unsigned */ value = e->value; time = e->time.tv_sec * 1000 + e->time.tv_usec / 1000; switch (e->type) { case EV_REL: switch (e->code) { case REL_X: dx += value; break; case REL_Y: dy += value; break; } break; case EV_ABS: absolute_event = 1; switch (e->code) { case ABS_X: if (device->new_x) { device->base_x = x - value; device->new_x = 0; } x = device->base_x + value; break; case ABS_Y: if (device->new_y) { device->base_y = y - value; device->new_y = 0; } y = device->base_y + value; break; } break; case EV_KEY: if (value == 2) break; switch (e->code) { case BTN_TOUCH: case BTN_TOOL_PEN: case BTN_TOOL_RUBBER: case BTN_TOOL_BRUSH: case BTN_TOOL_PENCIL: case BTN_TOOL_AIRBRUSH: case BTN_TOOL_FINGER: case BTN_TOOL_MOUSE: case BTN_TOOL_LENS: if (device->tool == 0 && value) { device->new_x = 1; device->new_y = 1; } device->tool = value ? e->code : 0; break; case BTN_LEFT: case BTN_RIGHT: case BTN_MIDDLE: case BTN_SIDE: case BTN_EXTRA: case BTN_FORWARD: case BTN_BACK: case BTN_TASK: notify_button(&device->master->base, time, e->code, value); break; default: notify_key(&device->master->base, time, e->code, value); break; } } } if (dx != 0 || dy != 0) notify_motion(&device->master->base, time, x + dx, y + dy); if (absolute_event && device->tool) notify_motion(&device->master->base, time, x, y); } static struct evdev_input_device * evdev_input_device_create(struct drm_input *master, struct wl_display *display, const char *path) { struct evdev_input_device *device; struct wl_event_loop *loop; device = malloc(sizeof *device); if (device == NULL) return NULL; device->tool = 1; device->new_x = 1; device->new_y = 1; device->master = master; device->fd = open(path, O_RDONLY); if (device->fd < 0) { free(device); fprintf(stderr, "couldn't create pointer for %s: %m\n", path); return NULL; } loop = wl_display_get_event_loop(display); device->source = wl_event_loop_add_fd(loop, device->fd, WL_EVENT_READABLE, evdev_input_device_data, device); if (device->source == NULL) { close(device->fd); free(device); return NULL; } return device; } static void drm_input_create(struct drm_compositor *c) { struct drm_input *input; struct udev_enumerate *e; struct udev_list_entry *entry; struct udev_device *device; const char *path; input = malloc(sizeof *input); if (input == NULL) return; memset(input, 0, sizeof *input); wlsc_input_device_init(&input->base, &c->base); e = udev_enumerate_new(c->udev); udev_enumerate_add_match_subsystem(e, "input"); udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1"); udev_enumerate_scan_devices(e); udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) { path = udev_list_entry_get_name(entry); device = udev_device_new_from_syspath(c->udev, path); evdev_input_device_create(input, c->base.wl_display, udev_device_get_devnode(device)); } udev_enumerate_unref(e); c->base.input_device = &input->base; } static void drm_compositor_present(struct wlsc_compositor *ec) { struct drm_compositor *c = (struct drm_compositor *) ec; struct drm_output *output; wl_list_for_each(output, &ec->output_list, base.link) { output->current ^= 1; glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, output->rbo[output->current]); drmModePageFlip(c->drm_fd, output->crtc_id, output->fb_id[output->current ^ 1], DRM_MODE_PAGE_FLIP_EVENT, output); } } static void page_flip_handler(int fd, unsigned int frame, unsigned int sec, unsigned int usec, void *data) { struct wlsc_output *output = data; struct wlsc_compositor *compositor = output->compositor; uint32_t msecs; msecs = sec * 1000 + usec / 1000; wlsc_compositor_finish_frame(compositor, msecs); } static void on_drm_input(int fd, uint32_t mask, void *data) { drmEventContext evctx; memset(&evctx, 0, sizeof evctx); evctx.version = DRM_EVENT_CONTEXT_VERSION; evctx.page_flip_handler = page_flip_handler; drmHandleEvent(fd, &evctx); } static int init_egl(struct drm_compositor *ec, struct udev_device *device) { EGLint major, minor; const char *extensions; static const EGLint context_attribs[] = { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE }; ec->base.base.device = strdup(udev_device_get_devnode(device)); ec->drm_fd = open(ec->base.base.device, O_RDWR); if (ec->drm_fd < 0) { /* Probably permissions error */ fprintf(stderr, "couldn't open %s, skipping\n", udev_device_get_devnode(device)); return -1; } ec->base.display = eglGetDRMDisplayMESA(ec->drm_fd); if (ec->base.display == NULL) { fprintf(stderr, "failed to create display\n"); return -1; } if (!eglInitialize(ec->base.display, &major, &minor)) { fprintf(stderr, "failed to initialize display\n"); return -1; } extensions = eglQueryString(ec->base.display, EGL_EXTENSIONS); if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) { fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n"); return -1; } eglBindAPI(EGL_OPENGL_ES_API); ec->base.context = eglCreateContext(ec->base.display, NULL, EGL_NO_CONTEXT, context_attribs); if (ec->base.context == NULL) { fprintf(stderr, "failed to create context\n"); return -1; } if (!eglMakeCurrent(ec->base.display, EGL_NO_SURFACE, EGL_NO_SURFACE, ec->base.context)) { fprintf(stderr, "failed to make context current\n"); return -1; } return 0; } static drmModeModeInfo builtin_1024x768 = { 63500, /* clock */ 1024, 1072, 1176, 1328, 0, 768, 771, 775, 798, 0, 59920, DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_PVSYNC, 0, "1024x768" }; static int create_output_for_connector(struct drm_compositor *ec, drmModeRes *resources, drmModeConnector *connector) { struct drm_output *output; drmModeEncoder *encoder; drmModeModeInfo *mode; int i, ret; EGLint handle, stride, attribs[] = { EGL_WIDTH, 0, EGL_HEIGHT, 0, EGL_IMAGE_FORMAT_MESA, EGL_IMAGE_FORMAT_ARGB8888_MESA, EGL_IMAGE_USE_MESA, EGL_IMAGE_USE_SCANOUT_MESA, EGL_NONE }; output = malloc(sizeof *output); if (output == NULL) return -1; if (connector->count_modes > 0) mode = &connector->modes[0]; else mode = &builtin_1024x768; encoder = drmModeGetEncoder(ec->drm_fd, connector->encoders[0]); if (encoder == NULL) { fprintf(stderr, "No encoder for connector.\n"); return -1; } for (i = 0; i < resources->count_crtcs; i++) { if (encoder->possible_crtcs & (1 << i)) break; } if (i == resources->count_crtcs) { fprintf(stderr, "No usable crtc for encoder.\n"); return -1; } memset(output, 0, sizeof *output); wlsc_output_init(&output->base, &ec->base, 0, 0, mode->hdisplay, mode->vdisplay); output->crtc_id = resources->crtcs[i]; output->connector_id = connector->connector_id; output->mode = *mode; drmModeFreeEncoder(encoder); glGenRenderbuffers(2, output->rbo); for (i = 0; i < 2; i++) { glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]); attribs[1] = output->base.width; attribs[3] = output->base.height; output->image[i] = eglCreateDRMImageMESA(ec->base.display, attribs); glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER, output->image[i]); eglExportDRMImageMESA(ec->base.display, output->image[i], NULL, &handle, &stride); ret = drmModeAddFB(ec->drm_fd, output->base.width, output->base.height, 32, 32, stride, handle, &output->fb_id[i]); if (ret) { fprintf(stderr, "failed to add fb %d: %m\n", i); return -1; } } output->current = 0; glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_RENDERBUFFER, output->rbo[output->current]); ret = drmModeSetCrtc(ec->drm_fd, output->crtc_id, output->fb_id[output->current ^ 1], 0, 0, &output->connector_id, 1, &output->mode); if (ret) { fprintf(stderr, "failed to set mode: %m\n"); return -1; } wl_list_insert(ec->base.output_list.prev, &output->base.link); return 0; } static int create_outputs(struct drm_compositor *ec) { drmModeConnector *connector; drmModeRes *resources; int i; resources = drmModeGetResources(ec->drm_fd); if (!resources) { fprintf(stderr, "drmModeGetResources failed\n"); return -1; } for (i = 0; i < resources->count_connectors; i++) { connector = drmModeGetConnector(ec->drm_fd, resources->connectors[i]); if (connector == NULL) continue; if (connector->connection == DRM_MODE_CONNECTED && (option_connector == 0 || connector->connector_id == option_connector)) if (create_output_for_connector(ec, resources, connector) < 0) return -1; drmModeFreeConnector(connector); } if (wl_list_empty(&ec->base.output_list)) { fprintf(stderr, "No currently active connector found.\n"); return -1; } drmModeFreeResources(resources); return 0; } static void on_enter_vt(int signal_number, void *data) { struct drm_compositor *ec = data; struct drm_output *output; int ret; ret = drmSetMaster(ec->drm_fd); if (ret) { fprintf(stderr, "failed to set drm master\n"); kill(0, SIGTERM); return; } fprintf(stderr, "enter vt\n"); ioctl(ec->tty_fd, VT_RELDISP, VT_ACKACQ); ec->vt_active = 1; wl_list_for_each(output, &ec->base.output_list, base.link) { ret = drmModeSetCrtc(ec->drm_fd, output->crtc_id, output->fb_id[output->current ^ 1], 0, 0, &output->connector_id, 1, &output->mode); if (ret) fprintf(stderr, "failed to set mode for connector %d: %m\n", output->connector_id); } } static void on_leave_vt(int signal_number, void *data) { struct drm_compositor *ec = data; int ret; ret = drmDropMaster(ec->drm_fd); if (ret) { fprintf(stderr, "failed to drop drm master\n"); kill(0, SIGTERM); return; } ioctl (ec->tty_fd, VT_RELDISP, 1); ec->vt_active = 0; } static void on_tty_input(int fd, uint32_t mask, void *data) { struct drm_compositor *ec = data; /* Ignore input to tty. We get keyboard events from evdev */ tcflush(ec->tty_fd, TCIFLUSH); } static void on_term_signal(int signal_number, void *data) { struct drm_compositor *ec = data; if (tcsetattr(ec->tty_fd, TCSANOW, &ec->terminal_attributes) < 0) fprintf(stderr, "could not restore terminal to canonical mode\n"); exit(0); } static int setup_tty(struct drm_compositor *ec, struct wl_event_loop *loop) { struct termios raw_attributes; struct vt_mode mode = { 0 }; ec->tty_fd = open("/dev/tty0", O_RDWR | O_NOCTTY); if (ec->tty_fd <= 0) { fprintf(stderr, "failed to open active tty: %m\n"); return -1; } if (tcgetattr(ec->tty_fd, &ec->terminal_attributes) < 0) { fprintf(stderr, "could not get terminal attributes: %m\n"); return -1; } /* Ignore control characters and disable echo */ raw_attributes = ec->terminal_attributes; cfmakeraw(&raw_attributes); /* Fix up line endings to be normal (cfmakeraw hoses them) */ raw_attributes.c_oflag |= OPOST | OCRNL; if (tcsetattr(ec->tty_fd, TCSANOW, &raw_attributes) < 0) fprintf(stderr, "could not put terminal into raw mode: %m\n"); ec->term_signal_source = wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, ec); ec->tty_input_source = wl_event_loop_add_fd(loop, ec->tty_fd, WL_EVENT_READABLE, on_tty_input, ec); ec->vt_active = 1; mode.mode = VT_PROCESS; mode.relsig = SIGUSR1; mode.acqsig = SIGUSR2; if (!ioctl(ec->tty_fd, VT_SETMODE, &mode) < 0) { fprintf(stderr, "failed to take control of vt handling\n"); } ec->leave_vt_source = wl_event_loop_add_signal(loop, SIGUSR1, on_leave_vt, ec); ec->enter_vt_source = wl_event_loop_add_signal(loop, SIGUSR2, on_enter_vt, ec); return 0; } struct wlsc_compositor * drm_compositor_create(struct wl_display *display) { struct drm_compositor *ec; struct udev_enumerate *e; struct udev_list_entry *entry; struct udev_device *device; const char *path; struct wl_event_loop *loop; ec = malloc(sizeof *ec); if (ec == NULL) return NULL; memset(ec, 0, sizeof *ec); ec->udev = udev_new(); if (ec->udev == NULL) { fprintf(stderr, "failed to initialize udev context\n"); return NULL; } e = udev_enumerate_new(ec->udev); udev_enumerate_add_match_subsystem(e, "drm"); udev_enumerate_add_match_property(e, "WAYLAND_SEAT", "1"); udev_enumerate_scan_devices(e); device = NULL; udev_list_entry_foreach(entry, udev_enumerate_get_list_entry(e)) { path = udev_list_entry_get_name(entry); device = udev_device_new_from_syspath(ec->udev, path); break; } udev_enumerate_unref(e); if (device == NULL) { fprintf(stderr, "no drm device found\n"); return NULL; } if (init_egl(ec, device) < 0) { fprintf(stderr, "failed to initialize egl\n"); return NULL; } /* Can't init base class until we have a current egl context */ if (wlsc_compositor_init(&ec->base, display) < 0) return NULL; if (create_outputs(ec) < 0) { fprintf(stderr, "failed to create output for %s\n", path); return NULL; } drm_input_create(ec); loop = wl_display_get_event_loop(ec->base.wl_display); ec->drm_source = wl_event_loop_add_fd(loop, ec->drm_fd, WL_EVENT_READABLE, on_drm_input, ec); setup_tty(ec, loop); ec->base.present = drm_compositor_present; ec->base.focus = 1; return &ec->base; }