/************************************************************************** * * Copyright 2011 Intel Corporation * Copyright 2012 Francisco Jerez * All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sub license, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial portions * of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * * Authors: * Kristian Høgsberg * Benjamin Franzke * **************************************************************************/ #include #include #include #include #ifdef HAVE_PIPE_LOADER_XCB #include #endif #include "loader.h" #include "state_tracker/drm_driver.h" #include "pipe_loader_priv.h" #include "util/u_memory.h" #include "util/u_dl.h" #include "util/u_debug.h" #define DRM_RENDER_NODE_DEV_NAME_FORMAT "%s/renderD%d" #define DRM_RENDER_NODE_MAX_NODES 63 #define DRM_RENDER_NODE_MIN_MINOR 128 #define DRM_RENDER_NODE_MAX_MINOR (DRM_RENDER_NODE_MIN_MINOR + DRM_RENDER_NODE_MAX_NODES) struct pipe_loader_drm_device { struct pipe_loader_device base; struct util_dl_library *lib; int fd; }; #define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev) static struct pipe_loader_ops pipe_loader_drm_ops; #ifdef HAVE_PIPE_LOADER_XCB static xcb_screen_t * get_xcb_screen(xcb_screen_iterator_t iter, int screen) { for (; iter.rem; --screen, xcb_screen_next(&iter)) if (screen == 0) return iter.data; return NULL; } #endif static void pipe_loader_drm_x_auth(int fd) { #ifdef HAVE_PIPE_LOADER_XCB /* Try authenticate with the X server to give us access to devices that X * is running on. */ xcb_connection_t *xcb_conn; const xcb_setup_t *xcb_setup; xcb_screen_iterator_t s; xcb_dri2_connect_cookie_t connect_cookie; xcb_dri2_connect_reply_t *connect; drm_magic_t magic; xcb_dri2_authenticate_cookie_t authenticate_cookie; xcb_dri2_authenticate_reply_t *authenticate; int screen; xcb_conn = xcb_connect(NULL, &screen); if(!xcb_conn) return; xcb_setup = xcb_get_setup(xcb_conn); if (!xcb_setup) goto disconnect; s = xcb_setup_roots_iterator(xcb_setup); connect_cookie = xcb_dri2_connect_unchecked(xcb_conn, get_xcb_screen(s, screen)->root, XCB_DRI2_DRIVER_TYPE_DRI); connect = xcb_dri2_connect_reply(xcb_conn, connect_cookie, NULL); if (!connect || connect->driver_name_length + connect->device_name_length == 0) { goto disconnect; } if (drmGetMagic(fd, &magic)) goto disconnect; authenticate_cookie = xcb_dri2_authenticate_unchecked(xcb_conn, s.data->root, magic); authenticate = xcb_dri2_authenticate_reply(xcb_conn, authenticate_cookie, NULL); FREE(authenticate); disconnect: xcb_disconnect(xcb_conn); #endif } bool pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd, boolean auth_x) { struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device); int vendor_id, chip_id; if (!ddev) return false; if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) { ddev->base.type = PIPE_LOADER_DEVICE_PCI; ddev->base.u.pci.vendor_id = vendor_id; ddev->base.u.pci.chip_id = chip_id; } else { ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM; } ddev->base.ops = &pipe_loader_drm_ops; ddev->fd = fd; if (auth_x) pipe_loader_drm_x_auth(fd); ddev->base.driver_name = loader_get_driver_for_fd(fd, _LOADER_GALLIUM); if (!ddev->base.driver_name) goto fail; *dev = &ddev->base; return true; fail: FREE(ddev); return false; } static int open_drm_minor(int minor) { char path[PATH_MAX]; snprintf(path, sizeof(path), DRM_DEV_NAME, DRM_DIR_NAME, minor); return open(path, O_RDWR, 0); } static int open_drm_render_node_minor(int minor) { char path[PATH_MAX]; snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME, minor); return open(path, O_RDWR, 0); } int pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev) { int i, k, fd, num_render_node_devs; int j = 0; struct { unsigned vendor_id; unsigned chip_id; } render_node_devs[DRM_RENDER_NODE_MAX_NODES]; /* Look for render nodes first */ for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0; i <= DRM_RENDER_NODE_MAX_MINOR; i++) { fd = open_drm_render_node_minor(i); struct pipe_loader_device *dev; if (fd < 0) continue; if (!pipe_loader_drm_probe_fd(&dev, fd, false)) { close(fd); continue; } render_node_devs[j].vendor_id = dev->u.pci.vendor_id; render_node_devs[j].chip_id = dev->u.pci.chip_id; if (j < ndev) { devs[j] = dev; } else { close(fd); dev->ops->release(&dev); } j++; } num_render_node_devs = j; /* Next look for drm devices. */ for (i = 0; i < DRM_MAX_MINOR; i++) { struct pipe_loader_device *dev; boolean duplicate = FALSE; fd = open_drm_minor(i); if (fd < 0) continue; if (!pipe_loader_drm_probe_fd(&dev, fd, true)) { close(fd); continue; } /* Check to make sure we aren't already accessing this device via * render nodes. */ for (k = 0; k < num_render_node_devs; k++) { if (dev->u.pci.vendor_id == render_node_devs[k].vendor_id && dev->u.pci.chip_id == render_node_devs[k].chip_id) { close(fd); dev->ops->release(&dev); duplicate = TRUE; break; } } if (duplicate) continue; if (j < ndev) { devs[j] = dev; } else { dev->ops->release(&dev); } j++; } return j; } static void pipe_loader_drm_release(struct pipe_loader_device **dev) { struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev); if (ddev->lib) util_dl_close(ddev->lib); close(ddev->fd); FREE(ddev->base.driver_name); FREE(ddev); *dev = NULL; } static const struct drm_conf_ret * pipe_loader_drm_configuration(struct pipe_loader_device *dev, enum drm_conf conf) { struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev); const struct drm_driver_descriptor *dd; if (!ddev->lib) return NULL; dd = (const struct drm_driver_descriptor *) util_dl_get_proc_address(ddev->lib, "driver_descriptor"); /* sanity check on the name */ if (!dd || strcmp(dd->name, ddev->base.driver_name) != 0) return NULL; if (!dd->configuration) return NULL; return dd->configuration(conf); } static struct pipe_screen * pipe_loader_drm_create_screen(struct pipe_loader_device *dev, const char *library_paths) { struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev); const struct drm_driver_descriptor *dd; if (!ddev->lib) ddev->lib = pipe_loader_find_module(dev, library_paths); if (!ddev->lib) return NULL; dd = (const struct drm_driver_descriptor *) util_dl_get_proc_address(ddev->lib, "driver_descriptor"); /* sanity check on the name */ if (!dd || strcmp(dd->name, ddev->base.driver_name) != 0) return NULL; return dd->create_screen(ddev->fd); } static struct pipe_loader_ops pipe_loader_drm_ops = { .create_screen = pipe_loader_drm_create_screen, .configuration = pipe_loader_drm_configuration, .release = pipe_loader_drm_release };