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