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 "frontend/drm_driver.h"
  43 #include "pipe_loader_priv.h"
  44
  45 #include "util/os_file.h"
  46 #include "util/u_memory.h"
  47 #include "util/u_dl.h"
  48 #include "util/u_debug.h"
  49
  50 #define DRM_RENDER_NODE_DEV_NAME_FORMAT "%s/renderD%d"
  51 #define DRM_RENDER_NODE_MAX_NODES 63
  52 #define DRM_RENDER_NODE_MIN_MINOR 128
  53 #define DRM_RENDER_NODE_MAX_MINOR (DRM_RENDER_NODE_MIN_MINOR + DRM_RENDER_NODE_MAX_NODES)
  54
  55 struct pipe_loader_drm_device {
  56    struct pipe_loader_device base;
  57    const struct drm_driver_descriptor *dd;
  58 #ifndef GALLIUM_STATIC_TARGETS
  59    struct util_dl_library *lib;
  60 #endif
  61    int fd;
  62 };
  63
  64 #define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev)
  65
  66 static const struct pipe_loader_ops pipe_loader_drm_ops;
  67
  68 #ifdef GALLIUM_STATIC_TARGETS
  69 static const struct drm_driver_descriptor driver_descriptors[] = {
  70     {
  71         .driver_name = "i915",
  72         .create_screen = pipe_i915_create_screen,
  73     },
  74     {
  75         .driver_name = "iris",
  76         .create_screen = pipe_iris_create_screen,
  77         .driconf_xml = &iris_driconf_xml,
  78     },
  79     {
  80         .driver_name = "nouveau",
  81         .create_screen = pipe_nouveau_create_screen,
  82     },
  83     {
  84         .driver_name = "r300",
  85         .create_screen = pipe_r300_create_screen,
  86     },
  87     {
  88         .driver_name = "r600",
  89         .create_screen = pipe_r600_create_screen,
  90     },
  91     {
  92         .driver_name = "radeonsi",
  93         .create_screen = pipe_radeonsi_create_screen,
  94         .driconf_xml = &radeonsi_driconf_xml,
  95     },
  96     {
  97         .driver_name = "vmwgfx",
  98         .create_screen = pipe_vmwgfx_create_screen,
  99     },
 100     {
 101         .driver_name = "kgsl",
 102         .create_screen = pipe_freedreno_create_screen,
 103     },
 104     {
 105         .driver_name = "msm",
 106         .create_screen = pipe_freedreno_create_screen,
 107     },
 108     {
 109         .driver_name = "virtio_gpu",
 110         .create_screen = pipe_virgl_create_screen,
 111         .driconf_xml = &virgl_driconf_xml,
 112     },
 113     {
 114         .driver_name = "v3d",
 115         .create_screen = pipe_v3d_create_screen,
 116         .driconf_xml = &v3d_driconf_xml,
 117     },
 118     {
 119         .driver_name = "vc4",
 120         .create_screen = pipe_vc4_create_screen,
 121         .driconf_xml = &v3d_driconf_xml,
 122     },
 123     {
 124         .driver_name = "panfrost",
 125         .create_screen = pipe_panfrost_create_screen,
 126     },
 127     {
 128         .driver_name = "etnaviv",
 129         .create_screen = pipe_etna_create_screen,
 130     },
 131     {
 132         .driver_name = "tegra",
 133         .create_screen = pipe_tegra_create_screen,
 134     },
 135     {
 136         .driver_name = "lima",
 137         .create_screen = pipe_lima_create_screen,
 138     },
 139     {
 140         .driver_name = "zink",
 141         .create_screen = pipe_zink_create_screen,
 142     },
 143 };
 144
 145 static const struct drm_driver_descriptor default_driver_descriptor = {
 146         .driver_name = "kmsro",
 147         .create_screen = pipe_kmsro_create_screen,
 148         .driconf_xml = &v3d_driconf_xml,
 149 };
 150
 151 #endif
 152
 153 static const struct drm_driver_descriptor *
 154 get_driver_descriptor(const char *driver_name, struct util_dl_library **plib)
 155 {
 156 #ifdef GALLIUM_STATIC_TARGETS
 157    for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
 158       if (strcmp(driver_descriptors[i].driver_name, driver_name) == 0)
 159          return &driver_descriptors[i];
 160    }
 161    return &default_driver_descriptor;
 162 #else
 163    *plib = pipe_loader_find_module(driver_name, PIPE_SEARCH_DIR);
 164    if (!*plib)
 165       return NULL;
 166
 167    const struct drm_driver_descriptor *dd =
 168          (const struct drm_driver_descriptor *)
 169          util_dl_get_proc_address(*plib, "driver_descriptor");
 170
 171    /* sanity check on the driver name */
 172    if (dd && strcmp(dd->driver_name, driver_name) == 0)
 173       return dd;
 174 #endif
 175
 176    return NULL;
 177 }
 178
 179 static bool
 180 pipe_loader_drm_probe_fd_nodup(struct pipe_loader_device **dev, int fd)
 181 {
 182    struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
 183    int vendor_id, chip_id;
 184
 185    if (!ddev)
 186       return false;
 187
 188    if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 189       ddev->base.type = PIPE_LOADER_DEVICE_PCI;
 190       ddev->base.u.pci.vendor_id = vendor_id;
 191       ddev->base.u.pci.chip_id = chip_id;
 192    } else {
 193       ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM;
 194    }
 195    ddev->base.ops = &pipe_loader_drm_ops;
 196    ddev->fd = fd;
 197
 198    ddev->base.driver_name = loader_get_driver_for_fd(fd);
 199    if (!ddev->base.driver_name)
 200       goto fail;
 201
 202    /* For the closed source AMD OpenGL driver, we want libgbm to load
 203     * "amdgpu_dri.so", but we want Gallium multimedia drivers to load
 204     * "radeonsi". So change amdgpu to radeonsi for Gallium.
 205     */
 206    if (strcmp(ddev->base.driver_name, "amdgpu") == 0) {
 207       FREE(ddev->base.driver_name);
 208       ddev->base.driver_name = strdup("radeonsi");
 209    }
 210
 211    struct util_dl_library **plib = NULL;
 212 #ifndef GALLIUM_STATIC_TARGETS
 213    plib = &ddev->lib;
 214 #endif
 215    ddev->dd = get_driver_descriptor(ddev->base.driver_name, plib);
 216
 217    /* kmsro supports lots of drivers, try as a fallback */
 218    if (!ddev->dd)
 219       ddev->dd = get_driver_descriptor("kmsro", plib);
 220
 221    if (!ddev->dd)
 222       goto fail;
 223
 224    *dev = &ddev->base;
 225    return true;
 226
 227   fail:
 228 #ifndef GALLIUM_STATIC_TARGETS
 229    if (ddev->lib)
 230       util_dl_close(ddev->lib);
 231 #endif
 232    FREE(ddev->base.driver_name);
 233    FREE(ddev);
 234    return false;
 235 }
 236
 237 bool
 238 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
 239 {
 240    bool ret;
 241    int new_fd;
 242
 243    if (fd < 0 || (new_fd = os_dupfd_cloexec(fd)) < 0)
 244      return false;
 245
 246    ret = pipe_loader_drm_probe_fd_nodup(dev, new_fd);
 247    if (!ret)
 248       close(new_fd);
 249
 250    return ret;
 251 }
 252
 253 static int
 254 open_drm_render_node_minor(int minor)
 255 {
 256    char path[PATH_MAX];
 257    snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
 258             minor);
 259    return loader_open_device(path);
 260 }
 261
 262 int
 263 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
 264 {
 265    int i, j, fd;
 266
 267    for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
 268         i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
 269       struct pipe_loader_device *dev;
 270
 271       fd = open_drm_render_node_minor(i);
 272       if (fd < 0)
 273          continue;
 274
 275       if (!pipe_loader_drm_probe_fd_nodup(&dev, fd)) {
 276          close(fd);
 277          continue;
 278       }
 279
 280       if (j < ndev) {
 281          devs[j] = dev;
 282       } else {
 283          close(fd);
 284          dev->ops->release(&dev);
 285       }
 286       j++;
 287    }
 288
 289    return j;
 290 }
 291
 292 static void
 293 pipe_loader_drm_release(struct pipe_loader_device **dev)
 294 {
 295    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
 296
 297 #ifndef GALLIUM_STATIC_TARGETS
 298    if (ddev->lib)
 299       util_dl_close(ddev->lib);
 300 #endif
 301
 302    close(ddev->fd);
 303    FREE(ddev->base.driver_name);
 304    pipe_loader_base_release(dev);
 305 }
 306
 307 static const char *
 308 pipe_loader_drm_get_driconf_xml(struct pipe_loader_device *dev)
 309 {
 310    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 311
 312    if (!ddev->dd->driconf_xml)
 313       return NULL;
 314
 315    return *ddev->dd->driconf_xml;
 316 }
 317
 318 static struct pipe_screen *
 319 pipe_loader_drm_create_screen(struct pipe_loader_device *dev,
 320                               const struct pipe_screen_config *config)
 321 {
 322    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 323
 324    return ddev->dd->create_screen(ddev->fd, config);
 325 }
 326
 327 char *
 328 pipe_loader_drm_get_driinfo_xml(const char *driver_name)
 329 {
 330    char *xml = NULL;
 331    struct util_dl_library *lib = NULL;
 332    const struct drm_driver_descriptor *dd =
 333       get_driver_descriptor(driver_name, &lib);
 334
 335    if (dd && dd->driconf_xml && *dd->driconf_xml)
 336       xml = strdup(*dd->driconf_xml);
 337
 338    if (lib)
 339       util_dl_close(lib);
 340    return xml;
 341 }
 342
 343 static const struct pipe_loader_ops pipe_loader_drm_ops = {
 344    .create_screen = pipe_loader_drm_create_screen,
 345    .get_driconf_xml = pipe_loader_drm_get_driconf_xml,
 346    .release = pipe_loader_drm_release
 347 };