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
  39 #include "loader.h"
  40 #include "target-helpers/drm_helper_public.h"
  41 #include "state_tracker/drm_driver.h"
  42 #include "pipe_loader_priv.h"
  43
  44 #include "util/u_memory.h"
  45 #include "util/u_dl.h"
  46 #include "util/u_debug.h"
  47
  48 #define DRM_RENDER_NODE_DEV_NAME_FORMAT "%s/renderD%d"
  49 #define DRM_RENDER_NODE_MAX_NODES 63
  50 #define DRM_RENDER_NODE_MIN_MINOR 128
  51 #define DRM_RENDER_NODE_MAX_MINOR (DRM_RENDER_NODE_MIN_MINOR + DRM_RENDER_NODE_MAX_NODES)
  52
  53 struct pipe_loader_drm_device {
  54    struct pipe_loader_device base;
  55    const struct drm_driver_descriptor *dd;
  56 #ifndef GALLIUM_STATIC_TARGETS
  57    struct util_dl_library *lib;
  58 #endif
  59    int fd;
  60 };
  61
  62 #define pipe_loader_drm_device(dev) ((struct pipe_loader_drm_device *)dev)
  63
  64 static const struct pipe_loader_ops pipe_loader_drm_ops;
  65
  66 #ifdef GALLIUM_STATIC_TARGETS
  67 static const struct drm_conf_ret throttle_ret = {
  68    .type = DRM_CONF_INT,
  69    .val.val_int = 2,
  70 };
  71
  72 static const struct drm_conf_ret share_fd_ret = {
  73    .type = DRM_CONF_BOOL,
  74    .val.val_bool = true,
  75 };
  76
  77 static inline const struct drm_conf_ret *
  78 configuration_query(enum drm_conf conf)
  79 {
  80    switch (conf) {
  81    case DRM_CONF_THROTTLE:
  82       return &throttle_ret;
  83    case DRM_CONF_SHARE_FD:
  84       return &share_fd_ret;
  85    default:
  86       break;
  87    }
  88    return NULL;
  89 }
  90
  91 static const struct drm_driver_descriptor driver_descriptors[] = {
  92     {
  93         .driver_name = "i915",
  94         .create_screen = pipe_i915_create_screen,
  95         .configuration = configuration_query,
  96     },
  97     {
  98         .driver_name = "nouveau",
  99         .create_screen = pipe_nouveau_create_screen,
 100         .configuration = configuration_query,
 101     },
 102     {
 103         .driver_name = "r300",
 104         .create_screen = pipe_r300_create_screen,
 105         .configuration = configuration_query,
 106     },
 107     {
 108         .driver_name = "r600",
 109         .create_screen = pipe_r600_create_screen,
 110         .configuration = configuration_query,
 111     },
 112     {
 113         .driver_name = "radeonsi",
 114         .create_screen = pipe_radeonsi_create_screen,
 115         .configuration = configuration_query,
 116     },
 117     {
 118         .driver_name = "vmwgfx",
 119         .create_screen = pipe_vmwgfx_create_screen,
 120         .configuration = configuration_query,
 121     },
 122     {
 123         .driver_name = "kgsl",
 124         .create_screen = pipe_freedreno_create_screen,
 125         .configuration = configuration_query,
 126     },
 127     {
 128         .driver_name = "msm",
 129         .create_screen = pipe_freedreno_create_screen,
 130         .configuration = configuration_query,
 131     },
 132     {
 133        .driver_name = "pl111",
 134         .create_screen = pipe_pl111_create_screen,
 135         .configuration = configuration_query,
 136     },
 137     {
 138         .driver_name = "virtio_gpu",
 139         .create_screen = pipe_virgl_create_screen,
 140         .configuration = configuration_query,
 141     },
 142     {
 143         .driver_name = "vc4",
 144         .create_screen = pipe_vc4_create_screen,
 145         .configuration = configuration_query,
 146     },
 147     {
 148         .driver_name = "etnaviv",
 149         .create_screen = pipe_etna_create_screen,
 150         .configuration = configuration_query,
 151     },
 152     {
 153         .driver_name = "imx-drm",
 154         .create_screen = pipe_imx_drm_create_screen,
 155         .configuration = configuration_query,
 156     }
 157 };
 158 #endif
 159
 160 static const struct drm_driver_descriptor *
 161 get_driver_descriptor(const char *driver_name, struct util_dl_library **plib)
 162 {
 163 #ifdef GALLIUM_STATIC_TARGETS
 164    for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
 165       if (strcmp(driver_descriptors[i].driver_name, driver_name) == 0)
 166          return &driver_descriptors[i];
 167    }
 168 #else
 169    *plib = pipe_loader_find_module(driver_name, PIPE_SEARCH_DIR);
 170    if (!*plib)
 171       return NULL;
 172
 173    const struct drm_driver_descriptor *dd =
 174          (const struct drm_driver_descriptor *)
 175          util_dl_get_proc_address(*plib, "driver_descriptor");
 176
 177    /* sanity check on the driver name */
 178    if (dd && strcmp(dd->driver_name, driver_name) == 0)
 179       return dd;
 180 #endif
 181
 182    return NULL;
 183 }
 184
 185 bool
 186 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
 187 {
 188    struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
 189    int vendor_id, chip_id;
 190
 191    if (!ddev)
 192       return false;
 193
 194    if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 195       ddev->base.type = PIPE_LOADER_DEVICE_PCI;
 196       ddev->base.u.pci.vendor_id = vendor_id;
 197       ddev->base.u.pci.chip_id = chip_id;
 198    } else {
 199       ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM;
 200    }
 201    ddev->base.ops = &pipe_loader_drm_ops;
 202    ddev->fd = fd;
 203
 204    ddev->base.driver_name = loader_get_driver_for_fd(fd);
 205    if (!ddev->base.driver_name)
 206       goto fail;
 207
 208    struct util_dl_library **plib = NULL;
 209 #ifndef GALLIUM_STATIC_TARGETS
 210    plib = &ddev->lib;
 211 #endif
 212    ddev->dd = get_driver_descriptor(ddev->base.driver_name, plib);
 213    if (!ddev->dd)
 214       goto fail;
 215
 216    *dev = &ddev->base;
 217    return true;
 218
 219   fail:
 220 #ifndef GALLIUM_STATIC_TARGETS
 221    if (ddev->lib)
 222       util_dl_close(ddev->lib);
 223 #endif
 224    FREE(ddev);
 225    return false;
 226 }
 227
 228 static int
 229 open_drm_render_node_minor(int minor)
 230 {
 231    char path[PATH_MAX];
 232    snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
 233             minor);
 234    return loader_open_device(path);
 235 }
 236
 237 int
 238 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
 239 {
 240    int i, j, fd;
 241
 242    for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
 243         i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
 244       struct pipe_loader_device *dev;
 245
 246       fd = open_drm_render_node_minor(i);
 247       if (fd < 0)
 248          continue;
 249
 250       if (!pipe_loader_drm_probe_fd(&dev, fd)) {
 251          close(fd);
 252          continue;
 253       }
 254
 255       if (j < ndev) {
 256          devs[j] = dev;
 257       } else {
 258          close(fd);
 259          dev->ops->release(&dev);
 260       }
 261       j++;
 262    }
 263
 264    return j;
 265 }
 266
 267 static void
 268 pipe_loader_drm_release(struct pipe_loader_device **dev)
 269 {
 270    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
 271
 272 #ifndef GALLIUM_STATIC_TARGETS
 273    if (ddev->lib)
 274       util_dl_close(ddev->lib);
 275 #endif
 276
 277    close(ddev->fd);
 278    FREE(ddev->base.driver_name);
 279    pipe_loader_base_release(dev);
 280 }
 281
 282 static const struct drm_conf_ret *
 283 pipe_loader_drm_configuration(struct pipe_loader_device *dev,
 284                               enum drm_conf conf)
 285 {
 286    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 287
 288    if (!ddev->dd->configuration)
 289       return NULL;
 290
 291    return ddev->dd->configuration(conf);
 292 }
 293
 294 static struct pipe_screen *
 295 pipe_loader_drm_create_screen(struct pipe_loader_device *dev,
 296                               const struct pipe_screen_config *config)
 297 {
 298    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 299
 300    return ddev->dd->create_screen(ddev->fd, config);
 301 }
 302
 303 char *
 304 pipe_loader_drm_get_driinfo_xml(const char *driver_name)
 305 {
 306    char *xml = NULL;
 307    struct util_dl_library *lib = NULL;
 308    const struct drm_driver_descriptor *dd =
 309       get_driver_descriptor(driver_name, &lib);
 310    if (!dd)
 311       goto out;
 312
 313    const struct drm_conf_ret *conf = dd->configuration(DRM_CONF_XML_OPTIONS);
 314    if (!conf)
 315       goto out;
 316
 317    xml = strdup((const char *)conf->val.val_pointer);
 318
 319 out:
 320    if (lib)
 321       util_dl_close(lib);
 322    return xml;
 323 }
 324
 325 static const struct pipe_loader_ops pipe_loader_drm_ops = {
 326    .create_screen = pipe_loader_drm_create_screen,
 327    .configuration = pipe_loader_drm_configuration,
 328    .release = pipe_loader_drm_release
 329 };