src/gallium/auxiliary/pipe-loader/pipe_loader_drm.c

   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 Høgsberg <krh@bitplanet.net>
  29  *    Benjamin Franzke <benjaminfranzke@googlemail.com>
  30  *
  31  **************************************************************************/
  32
  33 #include <fcntl.h>
  34 #include <stdio.h>
  35 #include <string.h>
  36 #include <xf86drm.h>
  37 #include <unistd.h>
  38 #include <fcntl.h>
  39
  40 #include "loader.h"
  41 #include "target-helpers/drm_helper_public.h"
  42 #include "state_tracker/drm_driver.h"
  43 #include "pipe_loader_priv.h"
  44
  45 #include "util/u_memory.h"
  46 #include "util/u_dl.h"
  47 #include "util/u_debug.h"
  48
  49 #define DRM_RENDER_NODE_DEV_NAME_FORMAT "%s/renderD%d"
  50 #define DRM_RENDER_NODE_MAX_NODES 63
  51 #define DRM_RENDER_NODE_MIN_MINOR 128
  52 #define DRM_RENDER_NODE_MAX_MINOR (DRM_RENDER_NODE_MIN_MINOR + DRM_RENDER_NODE_MAX_NODES)
  53
  54 struct pipe_loader_drm_device {
  55    struct pipe_loader_device base;
  56    const struct drm_driver_descriptor *dd;
  57 #ifndef GALLIUM_STATIC_TARGETS
  58    struct util_dl_library *lib;
  59 #endif
  60    int fd;
  61 };
  62
  63 #define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev)
  64
  65 static const struct pipe_loader_ops pipe_loader_drm_ops;
  66
  67 #ifdef GALLIUM_STATIC_TARGETS
  68 static const struct drm_driver_descriptor driver_descriptors[] = {
  69     {
  70         .driver_name = "i915",
  71         .create_screen = pipe_i915_create_screen,
  72     },
  73     {
  74         .driver_name = "iris",
  75         .create_screen = pipe_iris_create_screen,
  76         .driconf_xml = &iris_driconf_xml,
  77     },
  78     {
  79         .driver_name = "nouveau",
  80         .create_screen = pipe_nouveau_create_screen,
  81     },
  82     {
  83         .driver_name = "r300",
  84         .create_screen = pipe_r300_create_screen,
  85     },
  86     {
  87         .driver_name = "r600",
  88         .create_screen = pipe_r600_create_screen,
  89     },
  90     {
  91         .driver_name = "radeonsi",
  92         .create_screen = pipe_radeonsi_create_screen,
  93         .driconf_xml = &radeonsi_driconf_xml,
  94     },
  95     {
  96         .driver_name = "vmwgfx",
  97         .create_screen = pipe_vmwgfx_create_screen,
  98     },
  99     {
 100         .driver_name = "kgsl",
 101         .create_screen = pipe_freedreno_create_screen,
 102     },
 103     {
 104         .driver_name = "msm",
 105         .create_screen = pipe_freedreno_create_screen,
 106     },
 107     {
 108         .driver_name = "virtio_gpu",
 109         .create_screen = pipe_virgl_create_screen,
 110         .driconf_xml = &virgl_driconf_xml,
 111     },
 112     {
 113         .driver_name = "v3d",
 114         .create_screen = pipe_v3d_create_screen,
 115         .driconf_xml = &v3d_driconf_xml,
 116     },
 117     {
 118         .driver_name = "vc4",
 119         .create_screen = pipe_vc4_create_screen,
 120         .driconf_xml = &v3d_driconf_xml,
 121     },
 122     {
 123         .driver_name = "panfrost",
 124         .create_screen = pipe_panfrost_create_screen,
 125     },
 126     {
 127         .driver_name = "etnaviv",
 128         .create_screen = pipe_etna_create_screen,
 129     },
 130     {
 131         .driver_name = "tegra",
 132         .create_screen = pipe_tegra_create_screen,
 133     },
 134     {
 135         .driver_name = "lima",
 136         .create_screen = pipe_lima_create_screen,
 137     },
 138 };
 139
 140 static const struct drm_driver_descriptor default_driver_descriptor = {
 141         .driver_name = "kmsro",
 142         .create_screen = pipe_kmsro_create_screen,
 143         .driconf_xml = &v3d_driconf_xml,
 144 };
 145
 146 #endif
 147
 148 static const struct drm_driver_descriptor *
 149 get_driver_descriptor(const char *driver_name, struct util_dl_library **plib)
 150 {
 151 #ifdef GALLIUM_STATIC_TARGETS
 152    for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
 153       if (strcmp(driver_descriptors[i].driver_name, driver_name) == 0)
 154          return &driver_descriptors[i];
 155    }
 156    return &default_driver_descriptor;
 157 #else
 158    *plib = pipe_loader_find_module(driver_name, PIPE_SEARCH_DIR);
 159    if (!*plib)
 160       return NULL;
 161
 162    const struct drm_driver_descriptor *dd =
 163          (const struct drm_driver_descriptor *)
 164          util_dl_get_proc_address(*plib, "driver_descriptor");
 165
 166    /* sanity check on the driver name */
 167    if (dd && strcmp(dd->driver_name, driver_name) == 0)
 168       return dd;
 169 #endif
 170
 171    return NULL;
 172 }
 173
 174 static bool
 175 pipe_loader_drm_probe_fd_nodup(struct pipe_loader_device **dev, int fd)
 176 {
 177    struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
 178    int vendor_id, chip_id;
 179
 180    if (!ddev)
 181       return false;
 182
 183    if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 184       ddev->base.type = PIPE_LOADER_DEVICE_PCI;
 185       ddev->base.u.pci.vendor_id = vendor_id;
 186       ddev->base.u.pci.chip_id = chip_id;
 187    } else {
 188       ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM;
 189    }
 190    ddev->base.ops = &pipe_loader_drm_ops;
 191    ddev->fd = fd;
 192
 193    ddev->base.driver_name = loader_get_driver_for_fd(fd);
 194    if (!ddev->base.driver_name)
 195       goto fail;
 196
 197    /* For the closed source AMD OpenGL driver, we want libgbm to load
 198     * "amdgpu_dri.so", but we want Gallium multimedia drivers to load
 199     * "radeonsi". So change amdgpu to radeonsi for Gallium.
 200     */
 201    if (strcmp(ddev->base.driver_name, "amdgpu") == 0) {
 202       FREE(ddev->base.driver_name);
 203       ddev->base.driver_name = strdup("radeonsi");
 204    }
 205
 206    struct util_dl_library **plib = NULL;
 207 #ifndef GALLIUM_STATIC_TARGETS
 208    plib = &ddev->lib;
 209 #endif
 210    ddev->dd = get_driver_descriptor(ddev->base.driver_name, plib);
 211
 212    /* kmsro supports lots of drivers, try as a fallback */
 213    if (!ddev->dd)
 214       ddev->dd = get_driver_descriptor("kmsro", plib);
 215
 216    if (!ddev->dd)
 217       goto fail;
 218
 219    *dev = &ddev->base;
 220    return true;
 221
 222   fail:
 223 #ifndef GALLIUM_STATIC_TARGETS
 224    if (ddev->lib)
 225       util_dl_close(ddev->lib);
 226 #endif
 227    FREE(ddev->base.driver_name);
 228    FREE(ddev);
 229    return false;
 230 }
 231
 232 bool
 233 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
 234 {
 235    bool ret;
 236    int new_fd;
 237
 238    if (fd < 0 || (new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3)) < 0)
 239      return false;
 240
 241    ret = pipe_loader_drm_probe_fd_nodup(dev, new_fd);
 242    if (!ret)
 243       close(new_fd);
 244
 245    return ret;
 246 }
 247
 248 static int
 249 open_drm_render_node_minor(int minor)
 250 {
 251    char path[PATH_MAX];
 252    snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
 253             minor);
 254    return loader_open_device(path);
 255 }
 256
 257 int
 258 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
 259 {
 260    int i, j, fd;
 261
 262    for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
 263         i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
 264       struct pipe_loader_device *dev;
 265
 266       fd = open_drm_render_node_minor(i);
 267       if (fd < 0)
 268          continue;
 269
 270       if (!pipe_loader_drm_probe_fd_nodup(&dev, fd)) {
 271          close(fd);
 272          continue;
 273       }
 274
 275       if (j < ndev) {
 276          devs[j] = dev;
 277       } else {
 278          close(fd);
 279          dev->ops->release(&dev);
 280       }
 281       j++;
 282    }
 283
 284    return j;
 285 }
 286
 287 static void
 288 pipe_loader_drm_release(struct pipe_loader_device **dev)
 289 {
 290    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
 291
 292 #ifndef GALLIUM_STATIC_TARGETS
 293    if (ddev->lib)
 294       util_dl_close(ddev->lib);
 295 #endif
 296
 297    close(ddev->fd);
 298    FREE(ddev->base.driver_name);
 299    pipe_loader_base_release(dev);
 300 }
 301
 302 static const char *
 303 pipe_loader_drm_get_driconf_xml(struct pipe_loader_device *dev)
 304 {
 305    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 306
 307    if (!ddev->dd->driconf_xml)
 308       return NULL;
 309
 310    return *ddev->dd->driconf_xml;
 311 }
 312
 313 static struct pipe_screen *
 314 pipe_loader_drm_create_screen(struct pipe_loader_device *dev,
 315                               const struct pipe_screen_config *config)
 316 {
 317    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 318
 319    return ddev->dd->create_screen(ddev->fd, config);
 320 }
 321
 322 char *
 323 pipe_loader_drm_get_driinfo_xml(const char *driver_name)
 324 {
 325    char *xml = NULL;
 326    struct util_dl_library *lib = NULL;
 327    const struct drm_driver_descriptor *dd =
 328       get_driver_descriptor(driver_name, &lib);
 329
 330    if (dd && dd->driconf_xml)
 331       xml = strdup(*dd->driconf_xml);
 332
 333    if (lib)
 334       util_dl_close(lib);
 335    return xml;
 336 }
 337
 338 static const struct pipe_loader_ops pipe_loader_drm_ops = {
 339    .create_screen = pipe_loader_drm_create_screen,
 340    .get_driconf_xml = pipe_loader_drm_get_driconf_xml,
 341    .release = pipe_loader_drm_release
 342 };