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_driver_descriptor driver_descriptors[] = {
  68     {
  69         .driver_name = "i915",
  70         .create_screen = pipe_i915_create_screen,
  71         .configuration = pipe_default_configuration_query,
  72     },
  73     {
  74         .driver_name = "nouveau",
  75         .create_screen = pipe_nouveau_create_screen,
  76         .configuration = pipe_default_configuration_query,
  77     },
  78     {
  79         .driver_name = "r300",
  80         .create_screen = pipe_r300_create_screen,
  81         .configuration = pipe_default_configuration_query,
  82     },
  83     {
  84         .driver_name = "r600",
  85         .create_screen = pipe_r600_create_screen,
  86         .configuration = pipe_default_configuration_query,
  87     },
  88     {
  89         .driver_name = "radeonsi",
  90         .create_screen = pipe_radeonsi_create_screen,
  91         .configuration = pipe_radeonsi_configuration_query,
  92     },
  93     {
  94         .driver_name = "vmwgfx",
  95         .create_screen = pipe_vmwgfx_create_screen,
  96         .configuration = pipe_default_configuration_query,
  97     },
  98     {
  99         .driver_name = "kgsl",
 100         .create_screen = pipe_freedreno_create_screen,
 101         .configuration = pipe_default_configuration_query,
 102     },
 103     {
 104         .driver_name = "msm",
 105         .create_screen = pipe_freedreno_create_screen,
 106         .configuration = pipe_default_configuration_query,
 107     },
 108     {
 109        .driver_name = "pl111",
 110         .create_screen = pipe_pl111_create_screen,
 111         .configuration = pipe_default_configuration_query,
 112     },
 113     {
 114         .driver_name = "virtio_gpu",
 115         .create_screen = pipe_virgl_create_screen,
 116         .configuration = pipe_default_configuration_query,
 117     },
 118     {
 119         .driver_name = "v3d",
 120         .create_screen = pipe_v3d_create_screen,
 121         .configuration = pipe_default_configuration_query,
 122     },
 123     {
 124         .driver_name = "vc4",
 125         .create_screen = pipe_vc4_create_screen,
 126         .configuration = pipe_default_configuration_query,
 127     },
 128     {
 129         .driver_name = "etnaviv",
 130         .create_screen = pipe_etna_create_screen,
 131         .configuration = pipe_default_configuration_query,
 132     },
 133     {
 134         .driver_name = "imx-drm",
 135         .create_screen = pipe_imx_drm_create_screen,
 136         .configuration = pipe_default_configuration_query,
 137     },
 138     {
 139         .driver_name = "tegra",
 140         .create_screen = pipe_tegra_create_screen,
 141         .configuration = pipe_default_configuration_query,
 142     },
 143 };
 144 #endif
 145
 146 static const struct drm_driver_descriptor *
 147 get_driver_descriptor(const char *driver_name, struct util_dl_library **plib)
 148 {
 149 #ifdef GALLIUM_STATIC_TARGETS
 150    for (int i = 0; i < ARRAY_SIZE(driver_descriptors); i++) {
 151       if (strcmp(driver_descriptors[i].driver_name, driver_name) == 0)
 152          return &driver_descriptors[i];
 153    }
 154 #else
 155    *plib = pipe_loader_find_module(driver_name, PIPE_SEARCH_DIR);
 156    if (!*plib)
 157       return NULL;
 158
 159    const struct drm_driver_descriptor *dd =
 160          (const struct drm_driver_descriptor *)
 161          util_dl_get_proc_address(*plib, "driver_descriptor");
 162
 163    /* sanity check on the driver name */
 164    if (dd && strcmp(dd->driver_name, driver_name) == 0)
 165       return dd;
 166 #endif
 167
 168    return NULL;
 169 }
 170
 171 bool
 172 pipe_loader_drm_probe_fd(struct pipe_loader_device **dev, int fd)
 173 {
 174    struct pipe_loader_drm_device *ddev = CALLOC_STRUCT(pipe_loader_drm_device);
 175    int vendor_id, chip_id;
 176
 177    if (!ddev)
 178       return false;
 179
 180    if (loader_get_pci_id_for_fd(fd, &vendor_id, &chip_id)) {
 181       ddev->base.type = PIPE_LOADER_DEVICE_PCI;
 182       ddev->base.u.pci.vendor_id = vendor_id;
 183       ddev->base.u.pci.chip_id = chip_id;
 184    } else {
 185       ddev->base.type = PIPE_LOADER_DEVICE_PLATFORM;
 186    }
 187    ddev->base.ops = &pipe_loader_drm_ops;
 188    ddev->fd = fd;
 189
 190    ddev->base.driver_name = loader_get_driver_for_fd(fd);
 191    if (!ddev->base.driver_name)
 192       goto fail;
 193
 194    struct util_dl_library **plib = NULL;
 195 #ifndef GALLIUM_STATIC_TARGETS
 196    plib = &ddev->lib;
 197 #endif
 198    ddev->dd = get_driver_descriptor(ddev->base.driver_name, plib);
 199    if (!ddev->dd)
 200       goto fail;
 201
 202    *dev = &ddev->base;
 203    return true;
 204
 205   fail:
 206 #ifndef GALLIUM_STATIC_TARGETS
 207    if (ddev->lib)
 208       util_dl_close(ddev->lib);
 209 #endif
 210    FREE(ddev->base.driver_name);
 211    FREE(ddev);
 212    return false;
 213 }
 214
 215 static int
 216 open_drm_render_node_minor(int minor)
 217 {
 218    char path[PATH_MAX];
 219    snprintf(path, sizeof(path), DRM_RENDER_NODE_DEV_NAME_FORMAT, DRM_DIR_NAME,
 220             minor);
 221    return loader_open_device(path);
 222 }
 223
 224 int
 225 pipe_loader_drm_probe(struct pipe_loader_device **devs, int ndev)
 226 {
 227    int i, j, fd;
 228
 229    for (i = DRM_RENDER_NODE_MIN_MINOR, j = 0;
 230         i <= DRM_RENDER_NODE_MAX_MINOR; i++) {
 231       struct pipe_loader_device *dev;
 232
 233       fd = open_drm_render_node_minor(i);
 234       if (fd < 0)
 235          continue;
 236
 237       if (!pipe_loader_drm_probe_fd(&dev, fd)) {
 238          close(fd);
 239          continue;
 240       }
 241
 242       if (j < ndev) {
 243          devs[j] = dev;
 244       } else {
 245          close(fd);
 246          dev->ops->release(&dev);
 247       }
 248       j++;
 249    }
 250
 251    return j;
 252 }
 253
 254 static void
 255 pipe_loader_drm_release(struct pipe_loader_device **dev)
 256 {
 257    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(*dev);
 258
 259 #ifndef GALLIUM_STATIC_TARGETS
 260    if (ddev->lib)
 261       util_dl_close(ddev->lib);
 262 #endif
 263
 264    close(ddev->fd);
 265    FREE(ddev->base.driver_name);
 266    pipe_loader_base_release(dev);
 267 }
 268
 269 static const struct drm_conf_ret *
 270 pipe_loader_drm_configuration(struct pipe_loader_device *dev,
 271                               enum drm_conf conf)
 272 {
 273    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 274
 275    if (!ddev->dd->configuration)
 276       return NULL;
 277
 278    return ddev->dd->configuration(conf);
 279 }
 280
 281 static struct pipe_screen *
 282 pipe_loader_drm_create_screen(struct pipe_loader_device *dev,
 283                               const struct pipe_screen_config *config)
 284 {
 285    struct pipe_loader_drm_device *ddev = pipe_loader_drm_device(dev);
 286
 287    return ddev->dd->create_screen(ddev->fd, config);
 288 }
 289
 290 char *
 291 pipe_loader_drm_get_driinfo_xml(const char *driver_name)
 292 {
 293    char *xml = NULL;
 294    struct util_dl_library *lib = NULL;
 295    const struct drm_driver_descriptor *dd =
 296       get_driver_descriptor(driver_name, &lib);
 297    if (!dd)
 298       goto out;
 299
 300    const struct drm_conf_ret *conf = dd->configuration(DRM_CONF_XML_OPTIONS);
 301    if (!conf)
 302       goto out;
 303
 304    xml = strdup((const char *)conf->val.val_pointer);
 305
 306 out:
 307    if (lib)
 308       util_dl_close(lib);
 309    return xml;
 310 }
 311
 312 static const struct pipe_loader_ops pipe_loader_drm_ops = {
 313    .create_screen = pipe_loader_drm_create_screen,
 314    .configuration = pipe_loader_drm_configuration,
 315    .release = pipe_loader_drm_release
 316 };