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/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         .driver_name = "zink",
 140         .create_screen = pipe_zink_create_screen,
 141     },
 142 };
 143
 144 static const struct drm_driver_descriptor default_driver_descriptor = {
 145         .driver_name = "kmsro",
 146         .create_screen = pipe_kmsro_create_screen,
 147         .driconf_xml = &v3d_driconf_xml,
 148 };
 149
 150 #endif
 151
 152 static const struct drm_driver_descriptor *
 153 get_driver_descriptor(const char *driver_name, struct util_dl_library **plib)
 154 {
 155 #ifdef GALLIUM_STATIC_TARGETS
 156    for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
 157       if (strcmp(driver_descriptors[i].driver_name, driver_name) == 0)
 158          return &driver_descriptors[i];
 159    }
 160    return &default_driver_descriptor;
 161 #else
 162    *plib = pipe_loader_find_module(driver_name, PIPE_SEARCH_DIR);
 163    if (!*plib)
 164       return NULL;
 165
 166    const struct drm_driver_descriptor *dd =
 167          (const struct drm_driver_descriptor *)
 168          util_dl_get_proc_address(*plib, "driver_descriptor");
 169
 170    /* sanity check on the driver name */
 171    if (dd && strcmp(dd->driver_name, driver_name) == 0)
 172       return dd;
 173 #endif
 174
 175    return NULL;
 176 }
 177
 178 static bool
 179 pipe_loader_drm_probe_fd_nodup(struct pipe_loader_device **dev, int fd)
 180 {
 181    struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
 182    int vendor_id, chip_id;
 183
 184    if (!ddev)
 185       return false;
 186
 187    if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 188       ddev->base.type = PIPE_LOADER_DEVICE_PCI;
 189       ddev->base.u.pci.vendor_id = vendor_id;
 190       ddev->base.u.pci.chip_id = chip_id;
 191    } else {
 192       ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM;
 193    }
 194    ddev->base.ops = &pipe_loader_drm_ops;
 195    ddev->fd = fd;
 196
 197    ddev->base.driver_name = loader_get_driver_for_fd(fd);
 198    if (!ddev->base.driver_name)
 199       goto fail;
 200
 201    /* For the closed source AMD OpenGL driver, we want libgbm to load
 202     * "amdgpu_dri.so", but we want Gallium multimedia drivers to load
 203     * "radeonsi". So change amdgpu to radeonsi for Gallium.
 204     */
 205    if (strcmp(ddev->base.driver_name, "amdgpu") == 0) {
 206       FREE(ddev->base.driver_name);
 207       ddev->base.driver_name = strdup("radeonsi");
 208    }
 209
 210    struct util_dl_library **plib = NULL;
 211 #ifndef GALLIUM_STATIC_TARGETS
 212    plib = &ddev->lib;
 213 #endif
 214    ddev->dd = get_driver_descriptor(ddev->base.driver_name, plib);
 215
 216    /* kmsro supports lots of drivers, try as a fallback */
 217    if (!ddev->dd)
 218       ddev->dd = get_driver_descriptor("kmsro", plib);
 219
 220    if (!ddev->dd)
 221       goto fail;
 222
 223    *dev = &ddev->base;
 224    return true;
 225
 226   fail:
 227 #ifndef GALLIUM_STATIC_TARGETS
 228    if (ddev->lib)
 229       util_dl_close(ddev->lib);
 230 #endif
 231    FREE(ddev->base.driver_name);
 232    FREE(ddev);
 233    return false;
 234 }
 235
 236 bool
 237 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
 238 {
 239    bool ret;
 240    int new_fd;
 241
 242    if (fd < 0 || (new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3)) < 0)
 243      return false;
 244
 245    ret = pipe_loader_drm_probe_fd_nodup(dev, new_fd);
 246    if (!ret)
 247       close(new_fd);
 248
 249    return ret;
 250 }
 251
 252 static int
 253 open_drm_render_node_minor(int minor)
 254 {
 255    char path[PATH_MAX];
 256    snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
 257             minor);
 258    return loader_open_device(path);
 259 }
 260
 261 int
 262 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
 263 {
 264    int i, j, fd;
 265
 266    for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
 267         i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
 268       struct pipe_loader_device *dev;
 269
 270       fd = open_drm_render_node_minor(i);
 271       if (fd < 0)
 272          continue;
 273
 274       if (!pipe_loader_drm_probe_fd_nodup(&dev, fd)) {
 275          close(fd);
 276          continue;
 277       }
 278
 279       if (j < ndev) {
 280          devs[j] = dev;
 281       } else {
 282          close(fd);
 283          dev->ops->release(&dev);
 284       }
 285       j++;
 286    }
 287
 288    return j;
 289 }
 290
 291 static void
 292 pipe_loader_drm_release(struct pipe_loader_device **dev)
 293 {
 294    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
 295
 296 #ifndef GALLIUM_STATIC_TARGETS
 297    if (ddev->lib)
 298       util_dl_close(ddev->lib);
 299 #endif
 300
 301    close(ddev->fd);
 302    FREE(ddev->base.driver_name);
 303    pipe_loader_base_release(dev);
 304 }
 305
 306 static const char *
 307 pipe_loader_drm_get_driconf_xml(struct pipe_loader_device *dev)
 308 {
 309    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 310
 311    if (!ddev->dd->driconf_xml)
 312       return NULL;
 313
 314    return *ddev->dd->driconf_xml;
 315 }
 316
 317 static struct pipe_screen *
 318 pipe_loader_drm_create_screen(struct pipe_loader_device *dev,
 319                               const struct pipe_screen_config *config)
 320 {
 321    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 322
 323    return ddev->dd->create_screen(ddev->fd, config);
 324 }
 325
 326 char *
 327 pipe_loader_drm_get_driinfo_xml(const char *driver_name)
 328 {
 329    char *xml = NULL;
 330    struct util_dl_library *lib = NULL;
 331    const struct drm_driver_descriptor *dd =
 332       get_driver_descriptor(driver_name, &lib);
 333
 334    if (dd && dd->driconf_xml && *dd->driconf_xml)
 335       xml = strdup(*dd->driconf_xml);
 336
 337    if (lib)
 338       util_dl_close(lib);
 339    return xml;
 340 }
 341
 342 static const struct pipe_loader_ops pipe_loader_drm_ops = {
 343    .create_screen = pipe_loader_drm_create_screen,
 344    .get_driconf_xml = pipe_loader_drm_get_driconf_xml,
 345    .release = pipe_loader_drm_release
 346 };