/* Simple DirectMedia Layer Copyright (C) 1997-2020 Sam Lantinga This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. */ #include "../../SDL_internal.h" #if SDL_VIDEO_DRIVER_KMSDRM /* SDL internals */ #include "../SDL_sysvideo.h" #include "SDL_syswm.h" #include "SDL_hints.h" #include "../../events/SDL_events_c.h" #include "../../events/SDL_mouse_c.h" #include "../../events/SDL_keyboard_c.h" #ifdef SDL_INPUT_LINUXEV #include "../../core/linux/SDL_evdev.h" #endif /* KMS/DRM declarations */ #include "SDL_kmsdrmvideo.h" #include "SDL_kmsdrmevents.h" #include "SDL_kmsdrmopengles.h" #include "SDL_kmsdrmmouse.h" #include "SDL_kmsdrmdyn.h" #include #include #include #include #define KMSDRM_DRI_PATH "/dev/dri/" static int check_modesetting(int devindex) { SDL_bool available = SDL_FALSE; char device[512]; int drm_fd; SDL_snprintf(device, sizeof (device), "%scard%d", KMSDRM_DRI_PATH, devindex); SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "check_modesetting: probing \"%s\"", device); drm_fd = open(device, O_RDWR | O_CLOEXEC); if (drm_fd >= 0) { if (SDL_KMSDRM_LoadSymbols()) { drmModeRes *resources = KMSDRM_drmModeGetResources(drm_fd); if (resources) { SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "%scard%d connector, encoder and CRTC counts are: %d %d %d", KMSDRM_DRI_PATH, devindex, resources->count_connectors, resources->count_encoders, resources->count_crtcs); if (resources->count_connectors > 0 && resources->count_encoders > 0 && resources->count_crtcs > 0) { for (int i = 0; i < resources->count_connectors; i++) { drmModeConnector *conn = KMSDRM_drmModeGetConnector(drm_fd, resources->connectors[i]); if (!conn) { continue; } if (conn->connection == DRM_MODE_CONNECTED && conn->count_modes) { available = SDL_TRUE; } KMSDRM_drmModeFreeConnector(conn); if (available) { break; } } } KMSDRM_drmModeFreeResources(resources); } SDL_KMSDRM_UnloadSymbols(); } close(drm_fd); } return available; } static int get_dricount(void) { int devcount = 0; struct dirent *res; struct stat sb; DIR *folder; if (!(stat(KMSDRM_DRI_PATH, &sb) == 0 && S_ISDIR(sb.st_mode))) { printf("The path %s cannot be opened or is not available\n", KMSDRM_DRI_PATH); return 0; } if (access(KMSDRM_DRI_PATH, F_OK) == -1) { printf("The path %s cannot be opened\n", KMSDRM_DRI_PATH); return 0; } folder = opendir(KMSDRM_DRI_PATH); if (folder) { while ((res = readdir(folder))) { int len = SDL_strlen(res->d_name); if (len > 4 && SDL_strncmp(res->d_name, "card", 4) == 0) { devcount++; } } closedir(folder); } return devcount; } static int get_driindex(void) { const int devcount = get_dricount(); int i; for (i = 0; i < devcount; i++) { if (check_modesetting(i)) { return i; } } return -ENOENT; } /*********************************/ /* Atomic helper functions block */ /*********************************/ #define VOID2U64(x) ((uint64_t)(unsigned long)(x)) static int add_connector_property(drmModeAtomicReq *req, uint32_t obj_id, const char *name, uint64_t value) { SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); unsigned int i; int prop_id = 0; for (i = 0 ; i < dispdata->connector_props->count_props ; i++) { if (strcmp(dispdata->connector_props_info[i]->name, name) == 0) { prop_id = dispdata->connector_props_info[i]->prop_id; break; } } if (prop_id < 0) { printf("no connector property: %s\n", name); return -EINVAL; } return KMSDRM_drmModeAtomicAddProperty(req, obj_id, prop_id, value); } static int add_crtc_property(drmModeAtomicReq *req, uint32_t obj_id, const char *name, uint64_t value) { SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); unsigned int i; int prop_id = -1; for (i = 0 ; i < dispdata->crtc_props->count_props ; i++) { if (strcmp(dispdata->crtc_props_info[i]->name, name) == 0) { prop_id = dispdata->crtc_props_info[i]->prop_id; break; } } if (prop_id < 0) { printf("no crtc property: %s\n", name); return -EINVAL; } return KMSDRM_drmModeAtomicAddProperty(req, obj_id, prop_id, value); } static int add_plane_property(drmModeAtomicReq *req, uint32_t obj_id, const char *name, uint64_t value) { SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); unsigned int i; int prop_id = -1; for (i = 0 ; i < dispdata->plane_props->count_props ; i++) { if (strcmp(dispdata->plane_props_info[i]->name, name) == 0) { prop_id = dispdata->plane_props_info[i]->prop_id; break; } } if (prop_id < 0) { printf("no plane property: %s\n", name); return -EINVAL; } return KMSDRM_drmModeAtomicAddProperty(req, obj_id, prop_id, value); } #if 0 static void get_plane_properties() { uint32_t i; dispdata->plane_ = drmModeObjectGetProperties(viddata->drm_fd, plane->plane_id, DRM_MODE_OBJECT_PLANE); if (!dispdata->type.props) { printf("could not get %s %u properties: %s\n", #type, id, strerror(errno)); return NULL; } dispdata->type->props_info = calloc(dispdata->type.props->count_props, sizeof(*dispdata->type->props_info)); for (i = 0; i < dispdata->type->props->count_props; i++) { dispdata->type.props_info[i] = drmModeGetProperty(viddata->drm_fd, dispdata->type->props->props[i]); } return props; } void print_plane_info(_THIS, drmModePlanePtr plane) { char *plane_type; drmModeRes *resources; uint32_t type = 0; SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); drmModeObjectPropertiesPtr props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, plane->plane_id, DRM_MODE_OBJECT_PLANE); /* Search the plane props for the plane type. */ for (int j = 0; j < props->count_props; j++) { drmModePropertyPtr p = KMSDRM_drmModeGetProperty(viddata->drm_fd, props->props[j]); if ((strcmp(p->name, "type") == 0)) { type = props->prop_values[j]; } KMSDRM_drmModeFreeProperty(p); } switch (type) { case DRM_PLANE_TYPE_OVERLAY: plane_type = "overlay"; break; case DRM_PLANE_TYPE_PRIMARY: plane_type = "primary"; break; case DRM_PLANE_TYPE_CURSOR: plane_type = "cursor"; break; } /* Remember that, to present a plane on screen, it has to be connected to a CRTC so the CRTC scans it, scales it, etc... and presents it on screen. */ /* Now we look for the CRTCs supported by the plane. */ resources = KMSDRM_drmModeGetResources(viddata->drm_fd); if (!resources) return; printf("--PLANE ID: %d\nPLANE TYPE: %s\nCRTC READING THIS PLANE: %d\nCRTCS SUPPORTED BY THIS PLANE: ", plane->plane_id, plane_type, plane->crtc_id); for (int i = 0; i < resources->count_crtcs; i++) { if (plane->possible_crtcs & (1 << i)) { uint32_t crtc_id = resources->crtcs[i]; printf ("%d", crtc_id); break; } } printf ("\n\n"); } void get_planes_info(_THIS) { drmModePlaneResPtr plane_resources; uint32_t i; SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); plane_resources = KMSDRM_drmModeGetPlaneResources(viddata->drm_fd); if (!plane_resources) { printf("drmModeGetPlaneResources failed: %s\n", strerror(errno)); return; } printf("--Number of planes found: %d-- \n", plane_resources->count_planes); printf("--Usable CRTC that we have chosen: %d-- \n", dispdata->crtc->crtc_id); /* Iterate on all the available planes. */ for (i = 0; (i < plane_resources->count_planes); i++) { uint32_t plane_id = plane_resources->planes[i]; drmModePlanePtr plane = KMSDRM_drmModeGetPlane(viddata->drm_fd, plane_id); if (!plane) { printf("drmModeGetPlane(%u) failed: %s\n", plane_id, strerror(errno)); continue; } /* Print plane info. */ print_plane_info(_this, plane); KMSDRM_drmModeFreePlane(plane); } KMSDRM_drmModeFreePlaneResources(plane_resources); } #endif /* Get a plane that is PRIMARY (there's no guarantee that we have overlays in all hardware!) and can use the CRTC we have chosen. That's all. */ uint32_t get_plane_id(_THIS) { drmModePlaneResPtr plane_resources; uint32_t i, j; int ret = -EINVAL; int found_primary = 0; SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); plane_resources = KMSDRM_drmModeGetPlaneResources(viddata->drm_fd); if (!plane_resources) { printf("drmModeGetPlaneResources failed: %s\n", strerror(errno)); return -1; } /* Iterate on all the available planes. */ for (i = 0; (i < plane_resources->count_planes) && !found_primary; i++) { uint32_t plane_id = plane_resources->planes[i]; drmModePlanePtr plane = KMSDRM_drmModeGetPlane(viddata->drm_fd, plane_id); if (!plane) { printf("drmModeGetPlane(%u) failed: %s\n", plane_id, strerror(errno)); continue; } /* See if the current CRTC is available for this plane. */ if (plane->possible_crtcs & (1 << dispdata->crtc_index)) { drmModeObjectPropertiesPtr props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, plane_id, DRM_MODE_OBJECT_PLANE); ret = plane_id; /* Search the plane props, to see if it's a primary plane. */ for (j = 0; j < props->count_props; j++) { drmModePropertyPtr p = KMSDRM_drmModeGetProperty(viddata->drm_fd, props->props[j]); if ((strcmp(p->name, "type") == 0) && (props->prop_values[j] == DRM_PLANE_TYPE_PRIMARY)) { /* found our primary plane, lets use that: */ found_primary = 1; } KMSDRM_drmModeFreeProperty(p); } KMSDRM_drmModeFreeObjectProperties(props); } KMSDRM_drmModeFreePlane(plane); } KMSDRM_drmModeFreePlaneResources(plane_resources); return ret; } int drm_atomic_commit(_THIS, uint32_t fb_id, uint32_t flags) { SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); uint32_t plane_id = dispdata->plane->plane_id; uint32_t blob_id; drmModeAtomicReq *req; int ret; req = KMSDRM_drmModeAtomicAlloc(); if (flags & DRM_MODE_ATOMIC_ALLOW_MODESET) { if (add_connector_property(req, dispdata->connector->connector_id, "CRTC_ID", dispdata->crtc_id) < 0) return -1; if (KMSDRM_drmModeCreatePropertyBlob(viddata->drm_fd, &dispdata->mode, sizeof(dispdata->mode), &blob_id) != 0) return -1; if (add_crtc_property(req, dispdata->crtc_id, "MODE_ID", blob_id) < 0) return -1; if (add_crtc_property(req, dispdata->crtc_id, "ACTIVE", 1) < 0) return -1; } add_plane_property(req, plane_id, "FB_ID", fb_id); add_plane_property(req, plane_id, "CRTC_ID", dispdata->crtc_id); add_plane_property(req, plane_id, "SRC_X", 0); add_plane_property(req, plane_id, "SRC_Y", 0); add_plane_property(req, plane_id, "SRC_W", dispdata->mode.hdisplay << 16); add_plane_property(req, plane_id, "SRC_H", dispdata->mode.vdisplay << 16); add_plane_property(req, plane_id, "CRTC_X", 0); add_plane_property(req, plane_id, "CRTC_Y", 0); add_plane_property(req, plane_id, "CRTC_W", dispdata->mode.hdisplay); add_plane_property(req, plane_id, "CRTC_H", dispdata->mode.vdisplay); if (dispdata->kms_in_fence_fd != -1) { add_crtc_property(req, dispdata->crtc_id, "OUT_FENCE_PTR", VOID2U64(&dispdata->kms_out_fence_fd)); add_plane_property(req, plane_id, "IN_FENCE_FD", dispdata->kms_in_fence_fd); } ret = KMSDRM_drmModeAtomicCommit(viddata->drm_fd, req, flags, NULL); if (ret) goto out; if (dispdata->kms_in_fence_fd != -1) { close(dispdata->kms_in_fence_fd); dispdata->kms_in_fence_fd = -1; } out: KMSDRM_drmModeAtomicFree(req); return ret; } /***************************************/ /* End of Atomic helper functions block*/ /***************************************/ static int KMSDRM_Available(void) { int ret = -ENOENT; ret = get_driindex(); if (ret >= 0) return 1; return ret; } static void KMSDRM_DeleteDevice(SDL_VideoDevice * device) { if (device->driverdata) { SDL_free(device->driverdata); device->driverdata = NULL; } SDL_free(device); SDL_KMSDRM_UnloadSymbols(); } static SDL_VideoDevice * KMSDRM_CreateDevice(int devindex) { SDL_VideoDevice *device; SDL_VideoData *viddata; if (!KMSDRM_Available()) { return NULL; } if (!devindex || (devindex > 99)) { devindex = get_driindex(); } if (devindex < 0) { SDL_SetError("devindex (%d) must be between 0 and 99.\n", devindex); return NULL; } if (!SDL_KMSDRM_LoadSymbols()) { return NULL; } device = (SDL_VideoDevice *) SDL_calloc(1, sizeof(SDL_VideoDevice)); if (!device) { SDL_OutOfMemory(); return NULL; } viddata = (SDL_VideoData *) SDL_calloc(1, sizeof(SDL_VideoData)); if (!viddata) { SDL_OutOfMemory(); goto cleanup; } viddata->devindex = devindex; viddata->drm_fd = -1; device->driverdata = viddata; /* Setup all functions that can be handled from this backend. */ device->VideoInit = KMSDRM_VideoInit; device->VideoQuit = KMSDRM_VideoQuit; device->GetDisplayModes = KMSDRM_GetDisplayModes; device->SetDisplayMode = KMSDRM_SetDisplayMode; device->CreateSDLWindow = KMSDRM_CreateWindow; device->CreateSDLWindowFrom = KMSDRM_CreateWindowFrom; device->SetWindowTitle = KMSDRM_SetWindowTitle; device->SetWindowIcon = KMSDRM_SetWindowIcon; device->SetWindowPosition = KMSDRM_SetWindowPosition; device->SetWindowSize = KMSDRM_SetWindowSize; device->ShowWindow = KMSDRM_ShowWindow; device->HideWindow = KMSDRM_HideWindow; device->RaiseWindow = KMSDRM_RaiseWindow; device->MaximizeWindow = KMSDRM_MaximizeWindow; device->MinimizeWindow = KMSDRM_MinimizeWindow; device->RestoreWindow = KMSDRM_RestoreWindow; device->SetWindowGrab = KMSDRM_SetWindowGrab; device->DestroyWindow = KMSDRM_DestroyWindow; device->GetWindowWMInfo = KMSDRM_GetWindowWMInfo; #if SDL_VIDEO_OPENGL_EGL device->GL_LoadLibrary = KMSDRM_GLES_LoadLibrary; device->GL_GetProcAddress = KMSDRM_GLES_GetProcAddress; device->GL_UnloadLibrary = KMSDRM_GLES_UnloadLibrary; device->GL_CreateContext = KMSDRM_GLES_CreateContext; device->GL_MakeCurrent = KMSDRM_GLES_MakeCurrent; device->GL_SetSwapInterval = KMSDRM_GLES_SetSwapInterval; device->GL_GetSwapInterval = KMSDRM_GLES_GetSwapInterval; if (SDL_GetHintBoolean(SDL_HINT_VIDEO_DOUBLE_BUFFER, SDL_FALSE)) device->GL_SwapWindow = KMSDRM_GLES_SwapWindowDB; else device->GL_SwapWindow = KMSDRM_GLES_SwapWindow; device->GL_DeleteContext = KMSDRM_GLES_DeleteContext; #endif device->PumpEvents = KMSDRM_PumpEvents; device->free = KMSDRM_DeleteDevice; return device; cleanup: if (device) SDL_free(device); if (viddata) SDL_free(viddata); return NULL; } VideoBootStrap KMSDRM_bootstrap = { "KMSDRM", "KMS/DRM Video Driver", KMSDRM_CreateDevice }; static void KMSDRM_FBDestroyCallback(struct gbm_bo *bo, void *data) { KMSDRM_FBInfo *fb_info = (KMSDRM_FBInfo *)data; if (fb_info && fb_info->drm_fd >= 0 && fb_info->fb_id != 0) { KMSDRM_drmModeRmFB(fb_info->drm_fd, fb_info->fb_id); SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Delete DRM FB %u", fb_info->fb_id); } SDL_free(fb_info); } KMSDRM_FBInfo * KMSDRM_FBFromBO(_THIS, struct gbm_bo *bo) { SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); unsigned w,h; int ret; Uint32 stride, handle; /* Check for an existing framebuffer */ KMSDRM_FBInfo *fb_info = (KMSDRM_FBInfo *)KMSDRM_gbm_bo_get_user_data(bo); if (fb_info) { return fb_info; } /* Create a structure that contains enough info to remove the framebuffer when the backing buffer is destroyed */ fb_info = (KMSDRM_FBInfo *)SDL_calloc(1, sizeof(KMSDRM_FBInfo)); if (!fb_info) { SDL_OutOfMemory(); return NULL; } fb_info->drm_fd = viddata->drm_fd; /* Create framebuffer object for the buffer */ w = KMSDRM_gbm_bo_get_width(bo); h = KMSDRM_gbm_bo_get_height(bo); stride = KMSDRM_gbm_bo_get_stride(bo); handle = KMSDRM_gbm_bo_get_handle(bo).u32; ret = KMSDRM_drmModeAddFB(viddata->drm_fd, w, h, 24, 32, stride, handle, &fb_info->fb_id); if (ret) { SDL_free(fb_info); return NULL; } SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "New DRM FB (%u): %ux%u, stride %u from BO %p", fb_info->fb_id, w, h, stride, (void *)bo); /* Associate our DRM framebuffer with this buffer object */ KMSDRM_gbm_bo_set_user_data(bo, fb_info, KMSDRM_FBDestroyCallback); return fb_info; } /*****************************************************************************/ /* SDL Video and Display initialization/handling functions */ /* _this is a SDL_VideoDevice * */ /*****************************************************************************/ static void KMSDRM_DestroySurfaces(_THIS, SDL_Window * window) { SDL_WindowData *windata = (SDL_WindowData *)window->driverdata; if (windata->bo) { KMSDRM_gbm_surface_release_buffer(windata->gs, windata->bo); windata->bo = NULL; } if (windata->next_bo) { KMSDRM_gbm_surface_release_buffer(windata->gs, windata->next_bo); windata->next_bo = NULL; } #if SDL_VIDEO_OPENGL_EGL SDL_EGL_MakeCurrent(_this, EGL_NO_SURFACE, EGL_NO_CONTEXT); if (windata->egl_surface != EGL_NO_SURFACE) { SDL_EGL_DestroySurface(_this, windata->egl_surface); windata->egl_surface = EGL_NO_SURFACE; } #endif if (windata->gs) { KMSDRM_gbm_surface_destroy(windata->gs); windata->gs = NULL; } } int KMSDRM_CreateSurfaces(_THIS, SDL_Window * window) { SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); SDL_WindowData *windata = (SDL_WindowData *)window->driverdata; SDL_DisplayData *dispdata = (SDL_DisplayData *) SDL_GetDisplayForWindow(window)->driverdata; Uint32 width = dispdata->mode.hdisplay; Uint32 height = dispdata->mode.vdisplay; Uint32 surface_fmt = GBM_FORMAT_XRGB8888; Uint32 surface_flags = GBM_BO_USE_SCANOUT | GBM_BO_USE_RENDERING; #if SDL_VIDEO_OPENGL_EGL EGLContext egl_context; #endif if (!KMSDRM_gbm_device_is_format_supported(viddata->gbm_dev, surface_fmt, surface_flags)) { SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "GBM surface format not supported. Trying anyway."); } #if SDL_VIDEO_OPENGL_EGL SDL_EGL_SetRequiredVisualId(_this, surface_fmt); egl_context = (EGLContext)SDL_GL_GetCurrentContext(); #endif KMSDRM_DestroySurfaces(_this, window); windata->gs = KMSDRM_gbm_surface_create(viddata->gbm_dev, width, height, surface_fmt, surface_flags); if (!windata->gs) { return SDL_SetError("Could not create GBM surface"); } #if SDL_VIDEO_OPENGL_EGL windata->egl_surface = SDL_EGL_CreateSurface(_this, (NativeWindowType)windata->gs); if (windata->egl_surface == EGL_NO_SURFACE) { return SDL_SetError("Could not create EGL window surface"); } SDL_EGL_MakeCurrent(_this, windata->egl_surface, egl_context); windata->egl_surface_dirty = SDL_FALSE; #endif /* We take note here about the need to do a modeset in the atomic_commit(), called in KMSDRM_GLES_SwapWindow(). */ windata->crtc_setup_pending = SDL_TRUE; return 0; } int KMSDRM_VideoInit(_THIS) { int ret = 0; SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); SDL_DisplayData *dispdata = NULL; drmModeRes *resources = NULL; drmModeEncoder *encoder = NULL; char devname[32]; SDL_VideoDisplay display = {0}; dispdata = (SDL_DisplayData *) SDL_calloc(1, sizeof(SDL_DisplayData)); if (!dispdata) { return SDL_OutOfMemory(); } SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "KMSDRM_VideoInit()"); /* Open /dev/dri/cardNN */ SDL_snprintf(devname, sizeof(devname), "/dev/dri/card%d", viddata->devindex); SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Opening device %s", devname); viddata->drm_fd = open(devname, O_RDWR | O_CLOEXEC); if (viddata->drm_fd < 0) { ret = SDL_SetError("Could not open %s", devname); goto cleanup; } SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Opened DRM FD (%d)", viddata->drm_fd); viddata->gbm_dev = KMSDRM_gbm_create_device(viddata->drm_fd); if (!viddata->gbm_dev) { ret = SDL_SetError("Couldn't create gbm device."); goto cleanup; } /* Get all of the available connectors / devices / crtcs */ resources = KMSDRM_drmModeGetResources(viddata->drm_fd); if (!resources) { ret = SDL_SetError("drmModeGetResources(%d) failed", viddata->drm_fd); goto cleanup; } /* Iterate on the available connectors to find a connected connector. */ for (int i = 0; i < resources->count_connectors; i++) { drmModeConnector *conn = KMSDRM_drmModeGetConnector(viddata->drm_fd, resources->connectors[i]); if (!conn) { continue; } if (conn->connection == DRM_MODE_CONNECTED && conn->count_modes) { SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Found connector %d with %d modes.", conn->connector_id, conn->count_modes); dispdata->connector = conn; dispdata->connector_id = conn->connector_id; break; } KMSDRM_drmModeFreeConnector(conn); } if (!dispdata->connector) { ret = SDL_SetError("No currently active connector found."); goto cleanup; } /* Try to find the connector's current encoder */ for (int i = 0; i < resources->count_encoders; i++) { encoder = KMSDRM_drmModeGetEncoder(viddata->drm_fd, resources->encoders[i]); if (!encoder) { continue; } if (encoder->encoder_id == dispdata->connector->encoder_id) { SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Found encoder %d.", encoder->encoder_id); break; } KMSDRM_drmModeFreeEncoder(encoder); encoder = NULL; } if (!encoder) { /* No encoder was connected, find the first supported one */ for (int i = 0, j; i < resources->count_encoders; i++) { encoder = KMSDRM_drmModeGetEncoder(viddata->drm_fd, resources->encoders[i]); if (!encoder) { continue; } for (j = 0; j < dispdata->connector->count_encoders; j++) { if (dispdata->connector->encoders[j] == encoder->encoder_id) { break; } } if (j != dispdata->connector->count_encoders) { break; } KMSDRM_drmModeFreeEncoder(encoder); encoder = NULL; } } if (!encoder) { ret = SDL_SetError("No connected encoder found."); goto cleanup; } SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Found encoder %d.", encoder->encoder_id); /* Try to find a CRTC connected to this encoder */ dispdata->crtc = KMSDRM_drmModeGetCrtc(viddata->drm_fd, encoder->crtc_id); /* If no CRTC was connected to the encoder, find the first CRTC that is supported by the encoder, and use that. */ if (!dispdata->crtc) { for (int i = 0; i < resources->count_crtcs; i++) { if (encoder->possible_crtcs & (1 << i)) { encoder->crtc_id = resources->crtcs[i]; dispdata->crtc = KMSDRM_drmModeGetCrtc(viddata->drm_fd, encoder->crtc_id); break; } } } if (!dispdata->crtc) { ret = SDL_SetError("No CRTC found."); goto cleanup; } /* SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Saved crtc_id %u, fb_id %u, (%u,%u), %ux%u", dispdata->crtc->crtc_id, dispdata->crtc->buffer_id, dispdata->crtc->x, dispdata->crtc->y, dispdata->crtc->width, dispdata->crtc->height); */ dispdata->crtc_id = dispdata->crtc->crtc_id; dispdata->crtc = KMSDRM_drmModeGetCrtc(viddata->drm_fd, dispdata->crtc_id); /****************/ /* Atomic block */ /****************/ /* Find crtc_index. It's used to find out if a plane supports a CRTC. */ /* TODO: include this in the get_plane_id() function somehow. */ for (int i = 0; i < resources->count_crtcs; i++) { if (resources->crtcs[i] == dispdata->crtc_id) { dispdata->crtc_index = i; break; } } /* Initialize the fences and their fds: */ dispdata->kms_fence = NULL; dispdata->gpu_fence = NULL; dispdata->kms_out_fence_fd = -1, dispdata->kms_in_fence_fd = -1, /*********************/ /* Atomic block ends */ /*********************/ /* Figure out the default mode to be set. If the current CRTC's mode isn't valid, select the first mode supported by the connector FIXME find first mode that specifies DRM_MODE_TYPE_PREFERRED */ dispdata->mode = dispdata->crtc->mode; if (dispdata->crtc->mode_valid == 0) { SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Current mode is invalid, selecting connector's mode #0."); dispdata->mode = dispdata->connector->modes[0]; } /* Setup the single display that's available */ display.desktop_mode.w = dispdata->mode.hdisplay; display.desktop_mode.h = dispdata->mode.vdisplay; display.desktop_mode.refresh_rate = dispdata->mode.vrefresh; #if 1 display.desktop_mode.format = SDL_PIXELFORMAT_ARGB8888; #else /* FIXME */ drmModeFB *fb = drmModeGetFB(viddata->drm_fd, dispdata->crtc->buffer_id); display.desktop_mode.format = drmToSDLPixelFormat(fb->bpp, fb->depth); drmModeFreeFB(fb); #endif /* DRM mode index for the desktop mode is needed to complete desktop mode init NOW, so look for it in the DRM modes array. This is needed because SetDisplayMode() uses the mode index, and some programs change to fullscreen desktop video mode as they start. */ for (int i = 0; i < dispdata->connector->count_modes; i++) { if (!SDL_memcmp(dispdata->connector->modes + i, &dispdata->crtc->mode, sizeof(drmModeModeInfo))) { SDL_DisplayModeData *modedata = SDL_calloc(1, sizeof(SDL_DisplayModeData)); if (modedata) { modedata->mode_index = i; display.desktop_mode.driverdata = modedata; } } } display.current_mode = display.desktop_mode; display.driverdata = dispdata; SDL_AddVideoDisplay(&display); /****************/ /* Atomic block */ /****************/ ret = KMSDRM_drmSetClientCap(viddata->drm_fd, DRM_CLIENT_CAP_ATOMIC, 1); if (ret) { ret = SDL_SetError("no atomic modesetting support."); goto cleanup; } ret = KMSDRM_drmSetClientCap(viddata->drm_fd, DRM_CLIENT_CAP_UNIVERSAL_PLANES, 1); if (ret) { ret = SDL_SetError("no universal planes support."); goto cleanup; } dispdata->plane_id = get_plane_id(_this); if (!dispdata->plane_id) { ret = SDL_SetError("could not find a suitable plane."); goto cleanup; } dispdata->plane = KMSDRM_drmModeGetPlane(viddata->drm_fd, dispdata->plane_id); /* Use this if you ever need to see info on all available planes. */ #if 0 get_planes_info(_this); #endif /* We only do single plane to single crtc to single connector, no * fancy multi-monitor or multi-plane stuff. So just grab the * plane/crtc/connector property info for one of each: */ /* Get PLANE properties */ dispdata->plane_props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, dispdata->plane_id, DRM_MODE_OBJECT_PLANE); dispdata->plane_props_info = SDL_calloc(dispdata->plane_props->count_props, sizeof(dispdata->plane_props_info)); for (int i = 0; i < dispdata->plane_props->count_props; i++) { dispdata->plane_props_info[i] = KMSDRM_drmModeGetProperty(viddata->drm_fd, dispdata->plane_props->props[i]); } /* Get CRTC properties */ dispdata->crtc_props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, dispdata->crtc_id, DRM_MODE_OBJECT_CRTC); dispdata->crtc_props_info = SDL_calloc(dispdata->crtc_props->count_props, sizeof(dispdata->crtc_props_info)); for (int i = 0; i < dispdata->crtc_props->count_props; i++) { dispdata->crtc_props_info[i] = KMSDRM_drmModeGetProperty(viddata->drm_fd, dispdata->crtc_props->props[i]); } /* Get connector properties */ dispdata->connector_props = KMSDRM_drmModeObjectGetProperties(viddata->drm_fd, dispdata->connector_id, DRM_MODE_OBJECT_CONNECTOR); dispdata->connector_props_info = SDL_calloc(dispdata->connector_props->count_props, sizeof(dispdata->connector_props_info)); for (int i = 0; i < dispdata->connector_props->count_props; i++) { dispdata->connector_props_info[i] = KMSDRM_drmModeGetProperty(viddata->drm_fd, dispdata->connector_props->props[i]); } /*********************/ /* Atomic block ends */ /*********************/ #ifdef SDL_INPUT_LINUXEV SDL_EVDEV_Init(); #endif KMSDRM_InitMouse(_this); return ret; cleanup: if (encoder) KMSDRM_drmModeFreeEncoder(encoder); if (resources) KMSDRM_drmModeFreeResources(resources); if (ret != 0) { /* Error (complete) cleanup */ if (dispdata->connector) { KMSDRM_drmModeFreeConnector(dispdata->connector); dispdata->connector = NULL; } if (dispdata->crtc) { KMSDRM_drmModeFreeCrtc(dispdata->crtc); dispdata->crtc = NULL; } if (viddata->gbm_dev) { KMSDRM_gbm_device_destroy(viddata->gbm_dev); viddata->gbm_dev = NULL; } if (viddata->drm_fd >= 0) { close(viddata->drm_fd); viddata->drm_fd = -1; } SDL_free(dispdata); } return ret; } void KMSDRM_VideoQuit(_THIS) { SDL_VideoData *viddata = ((SDL_VideoData *)_this->driverdata); SDL_DisplayData *dispdata = (SDL_DisplayData *)SDL_GetDisplayDriverData(0); SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "KMSDRM_VideoQuit()"); if (_this->gl_config.driver_loaded) { SDL_GL_UnloadLibrary(); } /* Clear out the window list */ SDL_free(viddata->windows); viddata->windows = NULL; viddata->max_windows = 0; viddata->num_windows = 0; /* Restore saved CRTC settings */ if (viddata->drm_fd >= 0 && dispdata && dispdata->connector && dispdata->crtc) { drmModeConnector *conn = dispdata->connector; drmModeCrtc *crtc = dispdata->crtc; int ret = KMSDRM_drmModeSetCrtc(viddata->drm_fd, crtc->crtc_id, crtc->buffer_id, crtc->x, crtc->y, &conn->connector_id, 1, &crtc->mode); if (ret != 0) { SDL_LogWarn(SDL_LOG_CATEGORY_VIDEO, "Could not restore original CRTC mode"); } } /****************/ /* Atomic block */ /****************/ if (dispdata && dispdata->connector_props_info) { SDL_free(dispdata->connector_props_info); dispdata->connector_props_info = NULL; } if (dispdata && dispdata->crtc_props_info) { SDL_free(dispdata->crtc_props_info); dispdata->crtc_props_info = NULL; } if (dispdata && dispdata->plane_props_info) { SDL_free(dispdata->plane_props_info); dispdata->plane_props_info = NULL; } /*********************/ /* Atomic block ends */ /*********************/ if (dispdata && dispdata->connector) { KMSDRM_drmModeFreeConnector(dispdata->connector); dispdata->connector = NULL; } if (dispdata && dispdata->crtc) { KMSDRM_drmModeFreeCrtc(dispdata->crtc); dispdata->crtc = NULL; } if (viddata->gbm_dev) { KMSDRM_gbm_device_destroy(viddata->gbm_dev); viddata->gbm_dev = NULL; } if (viddata->drm_fd >= 0) { close(viddata->drm_fd); SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "Closed DRM FD %d", viddata->drm_fd); viddata->drm_fd = -1; } #ifdef SDL_INPUT_LINUXEV SDL_EVDEV_Quit(); #endif } void KMSDRM_GetDisplayModes(_THIS, SDL_VideoDisplay * display) { SDL_DisplayData *dispdata = display->driverdata; drmModeConnector *conn = dispdata->connector; SDL_DisplayMode mode; for (int i = 0; i < conn->count_modes; i++) { SDL_DisplayModeData *modedata = SDL_calloc(1, sizeof(SDL_DisplayModeData)); if (modedata) { modedata->mode_index = i; } mode.w = conn->modes[i].hdisplay; mode.h = conn->modes[i].vdisplay; mode.refresh_rate = conn->modes[i].vrefresh; mode.format = SDL_PIXELFORMAT_ARGB8888; mode.driverdata = modedata; if (!SDL_AddDisplayMode(display, &mode)) { SDL_free(modedata); } } } int KMSDRM_SetDisplayMode(_THIS, SDL_VideoDisplay * display, SDL_DisplayMode * mode) { SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata; SDL_DisplayData *dispdata = (SDL_DisplayData *)display->driverdata; SDL_DisplayModeData *modedata = (SDL_DisplayModeData *)mode->driverdata; drmModeConnector *conn = dispdata->connector; if (!modedata) { return SDL_SetError("Mode doesn't have an associated index"); } dispdata->mode = conn->modes[modedata->mode_index]; for (int i = 0; i < viddata->num_windows; i++) { SDL_Window *window = viddata->windows[i]; /* Re-create GBM and EGL surfaces everytime we change the display mode. */ if (KMSDRM_CreateSurfaces(_this, window)) { return -1; } /* Tell app about the resize */ SDL_SendWindowEvent(window, SDL_WINDOWEVENT_RESIZED, mode->w, mode->h); } return 0; } int KMSDRM_CreateWindow(_THIS, SDL_Window * window) { SDL_VideoData *viddata = (SDL_VideoData *)_this->driverdata; SDL_WindowData *windata; #if SDL_VIDEO_OPENGL_EGL if (!_this->egl_data) { if (SDL_GL_LoadLibrary(NULL) < 0) { goto error; } } #endif /* Allocate window internal data */ windata = (SDL_WindowData *)SDL_calloc(1, sizeof(SDL_WindowData)); if (!windata) { SDL_OutOfMemory(); goto error; } /* Init windata fields. */ windata->crtc_setup_pending = SDL_FALSE; windata->egl_surface_dirty = SDL_FALSE; /* First remember that certain functions in SDL_Video.c will call *_SetDisplayMode when the SDL_WINDOW_FULLSCREEN is set and SDL_WINDOW_FULLSCREEN_DESKTOP is not set. So I am determining here that the behavior when creating an SDL_Window() in KMSDRM, is: -Creating a normal non-fullscreen window won't change the display mode. They won't cover the full screen area, either, because that breaks the image aspect ratio. -Creating a SDL_WINDOW_FULLSCREEN window will change the display mode, because SDL_WINDOW_FULLSCREEN flag is set. -Creating a SDL_WINDOW_FULLSCREEN_DESKTOP window will not change the display mode, because even if the SDL_WINDOW_FULLSCREEN flag is set, SDL_WINDOW_FULLSCREEN_DESKTOP prevents it. If we ever decide that we want to have normal windows (non-SDL_WINDOW_FULLSCREEN) should cause a display mode change, we could force the SDL_WINDOW_FULLSCREEN flag again on every window. But remember that it will break games that check if a window is FULLSCREEN or not before setting a fullscreen mode with SDL_SetWindowFullscreen(), like sm64ex (sm64 pc port). If we ever decide that we want normal windows to cover the whole screen area, we can force window->w and window->h to the original display mode dimensions. Commented reference code for all this: window->flags |= (SDL_WINDOW_FULLSCREEN | SDL_WINDOW_OPENGL); SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window); window->w = display->desktop_mode.w; window->h = display->desktop_mode.h; */ /* Setup driver data for this window */ windata->viddata = viddata; window->driverdata = windata; if (KMSDRM_CreateSurfaces(_this, window)) { goto error; } /* Add window to the internal list of tracked windows. Note, while it may seem odd to support multiple fullscreen windows, some apps create an extra window as a dummy surface when working with multiple contexts */ if (viddata->num_windows >= viddata->max_windows) { int new_max_windows = viddata->max_windows + 1; viddata->windows = (SDL_Window **)SDL_realloc(viddata->windows, new_max_windows * sizeof(SDL_Window *)); viddata->max_windows = new_max_windows; if (!viddata->windows) { SDL_OutOfMemory(); goto error; } } viddata->windows[viddata->num_windows++] = window; /* Focus on the newly created window */ SDL_SetMouseFocus(window); SDL_SetKeyboardFocus(window); return 0; error: KMSDRM_DestroyWindow(_this, window); return -1; } void KMSDRM_DestroyWindow(_THIS, SDL_Window * window) { SDL_WindowData *windata = (SDL_WindowData *) window->driverdata; SDL_VideoData *viddata; if (!windata) { return; } /* Remove from the internal window list */ viddata = windata->viddata; for (int i = 0; i < viddata->num_windows; i++) { if (viddata->windows[i] == window) { viddata->num_windows--; for (int j = i; j < viddata->num_windows; j++) { viddata->windows[j] = viddata->windows[j + 1]; } break; } } KMSDRM_DestroySurfaces(_this, window); window->driverdata = NULL; SDL_free(windata); } int KMSDRM_CreateWindowFrom(_THIS, SDL_Window * window, const void *data) { return -1; } void KMSDRM_SetWindowTitle(_THIS, SDL_Window * window) { } void KMSDRM_SetWindowIcon(_THIS, SDL_Window * window, SDL_Surface * icon) { } void KMSDRM_SetWindowPosition(_THIS, SDL_Window * window) { } void KMSDRM_SetWindowSize(_THIS, SDL_Window * window) { } void KMSDRM_ShowWindow(_THIS, SDL_Window * window) { } void KMSDRM_HideWindow(_THIS, SDL_Window * window) { } void KMSDRM_RaiseWindow(_THIS, SDL_Window * window) { } void KMSDRM_MaximizeWindow(_THIS, SDL_Window * window) { } void KMSDRM_MinimizeWindow(_THIS, SDL_Window * window) { } void KMSDRM_RestoreWindow(_THIS, SDL_Window * window) { } void KMSDRM_SetWindowGrab(_THIS, SDL_Window * window, SDL_bool grabbed) { } /*****************************************************************************/ /* SDL Window Manager function */ /*****************************************************************************/ SDL_bool KMSDRM_GetWindowWMInfo(_THIS, SDL_Window * window, struct SDL_SysWMinfo *info) { if (info->version.major <= SDL_MAJOR_VERSION) { return SDL_TRUE; } else { SDL_SetError("application not compiled with SDL %d.%d\n", SDL_MAJOR_VERSION, SDL_MINOR_VERSION); return SDL_FALSE; } /* Failed to get window manager information */ return SDL_FALSE; } #endif /* SDL_VIDEO_DRIVER_KMSDRM */ /* vi: set ts=4 sw=4 expandtab: */