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         .configuration = pipe_default_configuration_query,
  73     },
  74     {
  75         .driver_name = "nouveau",
  76         .create_screen = pipe_nouveau_create_screen,
  77         .configuration = pipe_default_configuration_query,
  78     },
  79     {
  80         .driver_name = "r300",
  81         .create_screen = pipe_r300_create_screen,
  82         .configuration = pipe_default_configuration_query,
  83     },
  84     {
  85         .driver_name = "r600",
  86         .create_screen = pipe_r600_create_screen,
  87         .configuration = pipe_default_configuration_query,
  88     },
  89     {
  90         .driver_name = "radeonsi",
  91         .create_screen = pipe_radeonsi_create_screen,
  92         .configuration = pipe_radeonsi_configuration_query,
  93     },
  94     {
  95         .driver_name = "vmwgfx",
  96         .create_screen = pipe_vmwgfx_create_screen,
  97         .configuration = pipe_default_configuration_query,
  98     },
  99     {
 100         .driver_name = "kgsl",
 101         .create_screen = pipe_freedreno_create_screen,
 102         .configuration = pipe_default_configuration_query,
 103     },
 104     {
 105         .driver_name = "msm",
 106         .create_screen = pipe_freedreno_create_screen,
 107         .configuration = pipe_default_configuration_query,
 108     },
 109     {
 110         .driver_name = "virtio_gpu",
 111         .create_screen = pipe_virgl_create_screen,
 112         .configuration = pipe_default_configuration_query,
 113     },
 114     {
 115         .driver_name = "v3d",
 116         .create_screen = pipe_v3d_create_screen,
 117         .configuration = pipe_default_configuration_query,
 118     },
 119     {
 120         .driver_name = "vc4",
 121         .create_screen = pipe_vc4_create_screen,
 122         .configuration = pipe_default_configuration_query,
 123     },
 124     {
 125         .driver_name = "panfrost",
 126         .create_screen = pipe_panfrost_create_screen,
 127         .configuration = pipe_default_configuration_query,
 128     },
 129     {
 130         .driver_name = "etnaviv",
 131         .create_screen = pipe_etna_create_screen,
 132         .configuration = pipe_default_configuration_query,
 133     },
 134     {
 135         .driver_name = "tegra",
 136         .create_screen = pipe_tegra_create_screen,
 137         .configuration = pipe_default_configuration_query,
 138     },
 139 };
 140
 141 static const struct drm_driver_descriptor default_driver_descriptor = {
 142         .driver_name = "kmsro",
 143         .create_screen = pipe_kmsro_create_screen,
 144         .configuration = pipe_default_configuration_query,
 145 };
 146
 147 #endif
 148
 149 static const struct drm_driver_descriptor *
 150 get_driver_descriptor(const char *driver_name, struct util_dl_library **plib)
 151 {
 152 #ifdef GALLIUM_STATIC_TARGETS
 153    for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
 154       if (strcmp(driver_descriptors[i].driver_name, driver_name) == 0)
 155          return &driver_descriptors[i];
 156    }
 157    return &default_driver_descriptor;
 158 #else
 159    *plib = pipe_loader_find_module(driver_name, PIPE_SEARCH_DIR);
 160    if (!*plib)
 161       return NULL;
 162
 163    const struct drm_driver_descriptor *dd =
 164          (const struct drm_driver_descriptor *)
 165          util_dl_get_proc_address(*plib, "driver_descriptor");
 166
 167    /* sanity check on the driver name */
 168    if (dd && strcmp(dd->driver_name, driver_name) == 0)
 169       return dd;
 170 #endif
 171
 172    return NULL;
 173 }
 174
 175 static bool
 176 pipe_loader_drm_probe_fd_nodup(struct pipe_loader_device **dev, int fd)
 177 {
 178    struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
 179    int vendor_id, chip_id;
 180
 181    if (!ddev)
 182       return false;
 183
 184    if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 185       ddev->base.type = PIPE_LOADER_DEVICE_PCI;
 186       ddev->base.u.pci.vendor_id = vendor_id;
 187       ddev->base.u.pci.chip_id = chip_id;
 188    } else {
 189       ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM;
 190    }
 191    ddev->base.ops = &pipe_loader_drm_ops;
 192    ddev->fd = fd;
 193
 194    ddev->base.driver_name = loader_get_driver_for_fd(fd);
 195    if (!ddev->base.driver_name)
 196       goto fail;
 197
 198    struct util_dl_library **plib = NULL;
 199 #ifndef GALLIUM_STATIC_TARGETS
 200    plib = &ddev->lib;
 201 #endif
 202    ddev->dd = get_driver_descriptor(ddev->base.driver_name, plib);
 203    if (!ddev->dd)
 204       goto fail;
 205
 206    *dev = &ddev->base;
 207    return true;
 208
 209   fail:
 210 #ifndef GALLIUM_STATIC_TARGETS
 211    if (ddev->lib)
 212       util_dl_close(ddev->lib);
 213 #endif
 214    FREE(ddev->base.driver_name);
 215    FREE(ddev);
 216    return false;
 217 }
 218
 219 bool
 220 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
 221 {
 222    bool ret;
 223    int new_fd;
 224
 225    if (fd < 0 || (new_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3)) < 0)
 226      return false;
 227
 228    ret = pipe_loader_drm_probe_fd_nodup(dev, new_fd);
 229    if (!ret)
 230       close(new_fd);
 231
 232    return ret;
 233 }
 234
 235 static int
 236 open_drm_render_node_minor(int minor)
 237 {
 238    char path[PATH_MAX];
 239    snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
 240             minor);
 241    return loader_open_device(path);
 242 }
 243
 244 int
 245 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
 246 {
 247    int i, j, fd;
 248
 249    for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
 250         i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
 251       struct pipe_loader_device *dev;
 252
 253       fd = open_drm_render_node_minor(i);
 254       if (fd < 0)
 255          continue;
 256
 257       if (!pipe_loader_drm_probe_fd_nodup(&dev, fd)) {
 258          close(fd);
 259          continue;
 260       }
 261
 262       if (j < ndev) {
 263          devs[j] = dev;
 264       } else {
 265          close(fd);
 266          dev->ops->release(&dev);
 267       }
 268       j++;
 269    }
 270
 271    return j;
 272 }
 273
 274 static void
 275 pipe_loader_drm_release(struct pipe_loader_device **dev)
 276 {
 277    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
 278
 279 #ifndef GALLIUM_STATIC_TARGETS
 280    if (ddev->lib)
 281       util_dl_close(ddev->lib);
 282 #endif
 283
 284    close(ddev->fd);
 285    FREE(ddev->base.driver_name);
 286    pipe_loader_base_release(dev);
 287 }
 288
 289 static const struct drm_conf_ret *
 290 pipe_loader_drm_configuration(struct pipe_loader_device *dev,
 291                               enum drm_conf conf)
 292 {
 293    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 294
 295    if (!ddev->dd->configuration)
 296       return NULL;
 297
 298    return ddev->dd->configuration(conf);
 299 }
 300
 301 static struct pipe_screen *
 302 pipe_loader_drm_create_screen(struct pipe_loader_device *dev,
 303                               const struct pipe_screen_config *config)
 304 {
 305    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 306
 307    return ddev->dd->create_screen(ddev->fd, config);
 308 }
 309
 310 char *
 311 pipe_loader_drm_get_driinfo_xml(const char *driver_name)
 312 {
 313    char *xml = NULL;
 314    struct util_dl_library *lib = NULL;
 315    const struct drm_driver_descriptor *dd =
 316       get_driver_descriptor(driver_name, &lib);
 317    if (!dd)
 318       goto out;
 319
 320    const struct drm_conf_ret *conf = dd->configuration(DRM_CONF_XML_OPTIONS);
 321    if (!conf)
 322       goto out;
 323
 324    xml = strdup((const char *)conf->val.val_pointer);
 325
 326 out:
 327    if (lib)
 328       util_dl_close(lib);
 329    return xml;
 330 }
 331
 332 static const struct pipe_loader_ops pipe_loader_drm_ops = {
 333    .create_screen = pipe_loader_drm_create_screen,
 334    .configuration = pipe_loader_drm_configuration,
 335    .release = pipe_loader_drm_release
 336 };