| /************************************************************************** |
| * |
| * 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 TUNGSTEN GRAPHICS 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 <krh@bitplanet.net> |
| * Benjamin Franzke <benjaminfranzke@googlemail.com> |
| * |
| **************************************************************************/ |
| |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <libudev.h> |
| #include <xf86drm.h> |
| |
| #ifdef PIPE_LOADER_HAVE_XCB |
| |
| #include <xcb/dri2.h> |
| |
| #endif |
| |
| #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 DRIVER_MAP_GALLIUM_ONLY |
| #include "pci_ids/pci_id_driver_map.h" |
| |
| 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 boolean |
| find_drm_pci_id(struct pipe_loader_drm_device *ddev) |
| { |
| struct udev *udev = NULL; |
| struct udev_device *parent, *device = NULL; |
| struct stat stat; |
| const char *pci_id; |
| |
| if (fstat(ddev->fd, &stat) < 0) |
| goto fail; |
| |
| udev = udev_new(); |
| if (!udev) |
| goto fail; |
| |
| device = udev_device_new_from_devnum(udev, 'c', stat.st_rdev); |
| if (!device) |
| goto fail; |
| |
| parent = udev_device_get_parent(device); |
| if (!parent) |
| goto fail; |
| |
| pci_id = udev_device_get_property_value(parent, "PCI_ID"); |
| if (!pci_id || |
| sscanf(pci_id, "%x:%x", &ddev->base.u.pci.vendor_id, |
| &ddev->base.u.pci.chip_id) != 2) |
| goto fail; |
| |
| return TRUE; |
| |
| fail: |
| if (device) |
| udev_device_unref(device); |
| if (udev) |
| udev_unref(udev); |
| |
| debug_printf("pci id for fd %d not found\n", ddev->fd); |
| return FALSE; |
| } |
| |
| static boolean |
| find_drm_driver_name(struct pipe_loader_drm_device *ddev) |
| { |
| struct pipe_loader_device *dev = &ddev->base; |
| int i, j; |
| |
| for (i = 0; driver_map[i].driver; i++) { |
| if (dev->u.pci.vendor_id != driver_map[i].vendor_id) |
| continue; |
| |
| if (driver_map[i].num_chips_ids == -1) { |
| dev->driver_name = driver_map[i].driver; |
| goto found; |
| } |
| |
| for (j = 0; j < driver_map[i].num_chips_ids; j++) { |
| if (dev->u.pci.chip_id == driver_map[i].chip_ids[j]) { |
| dev->driver_name = driver_map[i].driver; |
| goto found; |
| } |
| } |
| } |
| |
| return FALSE; |
| |
| found: |
| debug_printf("driver for %04x:%04x: %s\n", dev->u.pci.vendor_id, |
| dev->u.pci.chip_id, dev->driver_name); |
| return TRUE; |
| } |
| |
| static struct pipe_loader_ops pipe_loader_drm_ops; |
| |
| static void |
| pipe_loader_drm_x_auth(int fd) |
| { |
| #if PIPE_LOADER_HAVE_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; |
| |
| xcb_conn = xcb_connect(NULL, NULL); |
| |
| 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, s.data->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 |
| } |
| |
| boolean |
| pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd) |
| { |
| struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device); |
| |
| ddev->base.type = PIPE_LOADER_DEVICE_PCI; |
| ddev->base.ops = &pipe_loader_drm_ops; |
| ddev->fd = fd; |
| |
| pipe_loader_drm_x_auth(fd); |
| |
| if (!find_drm_pci_id(ddev)) |
| goto fail; |
| |
| if (!find_drm_driver_name(ddev)) |
| 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); |
| } |
| |
| int |
| pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev) |
| { |
| int i, j, fd; |
| |
| for (i = 0, j = 0; i < DRM_MAX_MINOR; i++) { |
| fd = open_drm_minor(i); |
| if (fd < 0) |
| continue; |
| |
| if (j >= ndev || !pipe_loader_drm_probe_fd(&devs[j], fd)) |
| close(fd); |
| |
| 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); |
| *dev = NULL; |
| } |
| |
| 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, |
| .release = pipe_loader_drm_release |
| }; |