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 <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         .name = "i915",
  93         .driver_name = "i915",
  94         .create_screen = pipe_i915_create_screen,
  95         .configuration = configuration_query,
  96     },
  97 #ifdef USE_VC4_SIMULATOR
  98     /* VC4 simulator and ILO (i965) are mutually exclusive (error at
  99      * configure). As the latter is unconditionally added, keep this one above
 100      * it.
 101      */
 102     {
 103         .name = "i965",
 104         .driver_name = "vc4",
 105         .create_screen = pipe_vc4_create_screen,
 106         .configuration = configuration_query,
 107     },
 108 #endif
 109     {
 110         .name = "i965",
 111         .driver_name = "i915",
 112         .create_screen = pipe_ilo_create_screen,
 113         .configuration = configuration_query,
 114     },
 115     {
 116         .name = "nouveau",
 117         .driver_name = "nouveau",
 118         .create_screen = pipe_nouveau_create_screen,
 119         .configuration = configuration_query,
 120     },
 121     {
 122         .name = "r300",
 123         .driver_name = "radeon",
 124         .create_screen = pipe_r300_create_screen,
 125         .configuration = configuration_query,
 126     },
 127     {
 128         .name = "r600",
 129         .driver_name = "radeon",
 130         .create_screen = pipe_r600_create_screen,
 131         .configuration = configuration_query,
 132     },
 133     {
 134         .name = "radeonsi",
 135         .driver_name = "radeon",
 136         .create_screen = pipe_radeonsi_create_screen,
 137         .configuration = configuration_query,
 138     },
 139     {
 140         .name = "vmwgfx",
 141         .driver_name = "vmwgfx",
 142         .create_screen = pipe_vmwgfx_create_screen,
 143         .configuration = configuration_query,
 144     },
 145     {
 146         .name = "kgsl",
 147         .driver_name = "freedreno",
 148         .create_screen = pipe_freedreno_create_screen,
 149         .configuration = configuration_query,
 150     },
 151     {
 152         .name = "msm",
 153         .driver_name = "freedreno",
 154         .create_screen = pipe_freedreno_create_screen,
 155         .configuration = configuration_query,
 156     },
 157     {
 158         .name = "virtio_gpu",
 159         .driver_name = "virtio-gpu",
 160         .create_screen = pipe_virgl_create_screen,
 161         .configuration = configuration_query,
 162     },
 163     {
 164         .name = "vc4",
 165         .driver_name = "vc4",
 166         .create_screen = pipe_vc4_create_screen,
 167         .configuration = configuration_query,
 168     },
 169 };
 170 #endif
 171
 172 bool
 173 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
 174 {
 175    struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
 176    int vendor_id, chip_id;
 177
 178    if (!ddev)
 179       return false;
 180
 181    if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 182       ddev->base.type = PIPE_LOADER_DEVICE_PCI;
 183       ddev->base.u.pci.vendor_id = vendor_id;
 184       ddev->base.u.pci.chip_id = chip_id;
 185    } else {
 186       ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM;
 187    }
 188    ddev->base.ops = &pipe_loader_drm_ops;
 189    ddev->fd = fd;
 190
 191    ddev->base.driver_name = loader_get_driver_for_fd(fd, _LOADER_GALLIUM);
 192    if (!ddev->base.driver_name)
 193       goto fail;
 194
 195 #ifdef GALLIUM_STATIC_TARGETS
 196    for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
 197       if (strcmp(driver_descriptors[i].name, ddev->base.driver_name) == 0) {
 198          ddev->dd = &driver_descriptors[i];
 199          break;
 200       }
 201    }
 202    if (!ddev->dd)
 203       goto fail;
 204 #else
 205    ddev->lib = pipe_loader_find_module(&ddev->base, PIPE_SEARCH_DIR);
 206    if (!ddev->lib)
 207       goto fail;
 208
 209    ddev->dd = (const struct drm_driver_descriptor *)
 210       util_dl_get_proc_address(ddev->lib, "driver_descriptor");
 211
 212    /* sanity check on the name */
 213    if (!ddev->dd || strcmp(ddev->dd->name, ddev->base.driver_name) != 0)
 214       goto fail;
 215 #endif
 216
 217    *dev = &ddev->base;
 218    return true;
 219
 220   fail:
 221 #ifndef GALLIUM_STATIC_TARGETS
 222    if (ddev->lib)
 223       util_dl_close(ddev->lib);
 224 #endif
 225    FREE(ddev);
 226    return false;
 227 }
 228
 229 static int
 230 open_drm_render_node_minor(int minor)
 231 {
 232    char path[PATH_MAX];
 233    snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
 234             minor);
 235    return loader_open_device(path);
 236 }
 237
 238 int
 239 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
 240 {
 241    int i, j, fd;
 242
 243    for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
 244         i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
 245       struct pipe_loader_device *dev;
 246
 247       fd = open_drm_render_node_minor(i);
 248       if (fd < 0)
 249          continue;
 250
 251       if (!pipe_loader_drm_probe_fd(&dev, fd)) {
 252          close(fd);
 253          continue;
 254       }
 255
 256       if (j < ndev) {
 257          devs[j] = dev;
 258       } else {
 259          close(fd);
 260          dev->ops->release(&dev);
 261       }
 262       j++;
 263    }
 264
 265    return j;
 266 }
 267
 268 static void
 269 pipe_loader_drm_release(struct pipe_loader_device **dev)
 270 {
 271    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
 272
 273 #ifndef GALLIUM_STATIC_TARGETS
 274    if (ddev->lib)
 275       util_dl_close(ddev->lib);
 276 #endif
 277
 278    close(ddev->fd);
 279    FREE(ddev->base.driver_name);
 280    FREE(ddev);
 281    *dev = NULL;
 282 }
 283
 284 static const struct drm_conf_ret *
 285 pipe_loader_drm_configuration(struct pipe_loader_device *dev,
 286                               enum drm_conf conf)
 287 {
 288    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 289
 290    if (!ddev->dd->configuration)
 291       return NULL;
 292
 293    return ddev->dd->configuration(conf);
 294 }
 295
 296 static struct pipe_screen *
 297 pipe_loader_drm_create_screen(struct pipe_loader_device *dev)
 298 {
 299    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 300
 301    return ddev->dd->create_screen(ddev->fd);
 302 }
 303
 304 static const struct pipe_loader_ops pipe_loader_drm_ops = {
 305    .create_screen = pipe_loader_drm_create_screen,
 306    .configuration = pipe_loader_drm_configuration,
 307    .release = pipe_loader_drm_release
 308 };