1 /************************************************************************** 2 * 3 * Copyright 2011 Intel Corporation 4 * Copyright 2012 Francisco Jerez 5 * All Rights Reserved. 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the 9 * "Software"), to deal in the Software without restriction, including 10 * without limitation the rights to use, copy, modify, merge, publish, 11 * distribute, sub license, and/or sell copies of the Software, and to 12 * permit persons to whom the Software is furnished to do so, subject to 13 * the following conditions: 14 * 15 * The above copyright notice and this permission notice (including the 16 * next paragraph) shall be included in all copies or substantial portions 17 * of the Software. 18 * 19 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS 20 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 21 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. 22 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR 23 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, 24 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 25 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. 26 * 27 * Authors: 28 * Kristian Hgsberg <krh (at) bitplanet.net> 29 * Benjamin Franzke <benjaminfranzke (at) googlemail.com> 30 * 31 **************************************************************************/ 32 33 #include <fcntl.h> 34 #include <stdio.h> 35 #include <xf86drm.h> 36 #include <unistd.h> 37 38 #include "loader.h" 39 #include "target-helpers/drm_helper_public.h" 40 #include "state_tracker/drm_driver.h" 41 #include "pipe_loader_priv.h" 42 43 #include "util/u_memory.h" 44 #include "util/u_dl.h" 45 #include "util/u_debug.h" 46 47 #define DRM_RENDER_NODE_DEV_NAME_FORMAT "%s/renderD%d" 48 #define DRM_RENDER_NODE_MAX_NODES 63 49 #define DRM_RENDER_NODE_MIN_MINOR 128 50 #define DRM_RENDER_NODE_MAX_MINOR (DRM_RENDER_NODE_MIN_MINOR + DRM_RENDER_NODE_MAX_NODES) 51 52 struct pipe_loader_drm_device { 53 struct pipe_loader_device base; 54 const struct drm_driver_descriptor *dd; 55 #ifndef GALLIUM_STATIC_TARGETS 56 struct util_dl_library *lib; 57 #endif 58 int fd; 59 }; 60 61 #define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev) 62 63 static const struct pipe_loader_ops pipe_loader_drm_ops; 64 65 #ifdef GALLIUM_STATIC_TARGETS 66 static const struct drm_conf_ret throttle_ret = { 67 DRM_CONF_INT, 68 {2}, 69 }; 70 71 static const struct drm_conf_ret share_fd_ret = { 72 DRM_CONF_BOOL, 73 {true}, 74 }; 75 76 static inline const struct drm_conf_ret * 77 configuration_query(enum drm_conf conf) 78 { 79 switch (conf) { 80 case DRM_CONF_THROTTLE: 81 return &throttle_ret; 82 case DRM_CONF_SHARE_FD: 83 return &share_fd_ret; 84 default: 85 break; 86 } 87 return NULL; 88 } 89 90 static const struct drm_driver_descriptor driver_descriptors[] = { 91 { 92 .driver_name = "i915", 93 .create_screen = pipe_i915_create_screen, 94 .configuration = configuration_query, 95 }, 96 #ifdef USE_VC4_SIMULATOR 97 /* VC4 simulator and ILO (i965) are mutually exclusive (error at 98 * configure). As the latter is unconditionally added, keep this one above 99 * it. 100 */ 101 { 102 .driver_name = "i965", 103 .create_screen = pipe_vc4_create_screen, 104 .configuration = configuration_query, 105 }, 106 #endif 107 { 108 .driver_name = "i965", 109 .create_screen = pipe_ilo_create_screen, 110 .configuration = configuration_query, 111 }, 112 { 113 .driver_name = "nouveau", 114 .create_screen = pipe_nouveau_create_screen, 115 .configuration = configuration_query, 116 }, 117 { 118 .driver_name = "r300", 119 .create_screen = pipe_r300_create_screen, 120 .configuration = configuration_query, 121 }, 122 { 123 .driver_name = "r600", 124 .create_screen = pipe_r600_create_screen, 125 .configuration = configuration_query, 126 }, 127 { 128 .driver_name = "radeonsi", 129 .create_screen = pipe_radeonsi_create_screen, 130 .configuration = configuration_query, 131 }, 132 { 133 .driver_name = "vmwgfx", 134 .create_screen = pipe_vmwgfx_create_screen, 135 .configuration = configuration_query, 136 }, 137 { 138 .driver_name = "kgsl", 139 .create_screen = pipe_freedreno_create_screen, 140 .configuration = configuration_query, 141 }, 142 { 143 .driver_name = "msm", 144 .create_screen = pipe_freedreno_create_screen, 145 .configuration = configuration_query, 146 }, 147 { 148 .driver_name = "virtio_gpu", 149 .create_screen = pipe_virgl_create_screen, 150 .configuration = configuration_query, 151 }, 152 { 153 .driver_name = "vc4", 154 .create_screen = pipe_vc4_create_screen, 155 .configuration = configuration_query, 156 }, 157 { 158 .driver_name = "etnaviv", 159 .create_screen = pipe_etna_create_screen, 160 .configuration = configuration_query, 161 }, 162 { 163 .driver_name = "imx-drm", 164 .create_screen = pipe_imx_drm_create_screen, 165 .configuration = configuration_query, 166 } 167 }; 168 #endif 169 170 bool 171 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd) 172 { 173 struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device); 174 int vendor_id, chip_id; 175 176 if (!ddev) 177 return false; 178 179 if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) { 180 ddev->base.type = PIPE_LOADER_DEVICE_PCI; 181 ddev->base.u.pci.vendor_id = vendor_id; 182 ddev->base.u.pci.chip_id = chip_id; 183 } else { 184 ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM; 185 } 186 ddev->base.ops = &pipe_loader_drm_ops; 187 ddev->fd = fd; 188 189 ddev->base.driver_name = loader_get_driver_for_fd(fd); 190 if (!ddev->base.driver_name) 191 goto fail; 192 193 #ifdef GALLIUM_STATIC_TARGETS 194 for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) { 195 if (strcmp(driver_descriptors[i].driver_name, ddev->base.driver_name) == 0) { 196 ddev->dd = &driver_descriptors[i]; 197 break; 198 } 199 } 200 if (!ddev->dd) 201 goto fail; 202 #else 203 ddev->lib = pipe_loader_find_module(&ddev->base, PIPE_SEARCH_DIR); 204 if (!ddev->lib) 205 goto fail; 206 207 ddev->dd = (const struct drm_driver_descriptor *) 208 util_dl_get_proc_address(ddev->lib, "driver_descriptor"); 209 210 /* sanity check on the driver name */ 211 if (!ddev->dd || strcmp(ddev->dd->driver_name, ddev->base.driver_name) != 0) 212 goto fail; 213 #endif 214 215 *dev = &ddev->base; 216 return true; 217 218 fail: 219 #ifndef GALLIUM_STATIC_TARGETS 220 if (ddev->lib) 221 util_dl_close(ddev->lib); 222 #endif 223 FREE(ddev); 224 return false; 225 } 226 227 static int 228 open_drm_render_node_minor(int minor) 229 { 230 char path[PATH_MAX]; 231 snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME, 232 minor); 233 return loader_open_device(path); 234 } 235 236 int 237 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev) 238 { 239 int i, j, fd; 240 241 for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0; 242 i <= DRM_RENDER_NODE_MAX_MINOR; i++) { 243 struct pipe_loader_device *dev; 244 245 fd = open_drm_render_node_minor(i); 246 if (fd < 0) 247 continue; 248 249 if (!pipe_loader_drm_probe_fd(&dev, fd)) { 250 close(fd); 251 continue; 252 } 253 254 if (j < ndev) { 255 devs[j] = dev; 256 } else { 257 close(fd); 258 dev->ops->release(&dev); 259 } 260 j++; 261 } 262 263 return j; 264 } 265 266 static void 267 pipe_loader_drm_release(struct pipe_loader_device **dev) 268 { 269 struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev); 270 271 #ifndef GALLIUM_STATIC_TARGETS 272 if (ddev->lib) 273 util_dl_close(ddev->lib); 274 #endif 275 276 close(ddev->fd); 277 FREE(ddev->base.driver_name); 278 FREE(ddev); 279 *dev = NULL; 280 } 281 282 static const struct drm_conf_ret * 283 pipe_loader_drm_configuration(struct pipe_loader_device *dev, 284 enum drm_conf conf) 285 { 286 struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev); 287 288 if (!ddev->dd->configuration) 289 return NULL; 290 291 return ddev->dd->configuration(conf); 292 } 293 294 static struct pipe_screen * 295 pipe_loader_drm_create_screen(struct pipe_loader_device *dev) 296 { 297 struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev); 298 299 return ddev->dd->create_screen(ddev->fd); 300 } 301 302 static const struct pipe_loader_ops pipe_loader_drm_ops = { 303 .create_screen = pipe_loader_drm_create_screen, 304 .configuration = pipe_loader_drm_configuration, 305 .release = pipe_loader_drm_release 306 }; 307