src/gallium/winsys/radeon/drm/radeon_drm_winsys.c

   1 /*
   2  * Copyright © 2009 Corbin Simpson
   3  * Copyright © 2011 Marek Olšák <maraeo@gmail.com>
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining
   7  * a copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  16  * OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17  * NON-INFRINGEMENT. IN NO EVENT SHALL THE COPYRIGHT HOLDERS, AUTHORS
  18  * AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  20  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * The above copyright notice and this permission notice (including the
  24  * next paragraph) shall be included in all copies or substantial portions
  25  * of the Software.
  26  */
  27 /*
  28  * Authors:
  29  *      Corbin Simpson <MostAwesomeDude@gmail.com>
  30  *      Joakim Sindholt <opensource@zhasha.com>
  31  *      Marek Olšák <maraeo@gmail.com>
  32  */
  33
  34 #include "radeon_drm_bo.h"
  35 #include "radeon_drm_cs.h"
  36 #include "radeon_drm_public.h"
  37
  38 #include "pipebuffer/pb_bufmgr.h"
  39 #include "util/u_memory.h"
  40
  41 #include <xf86drm.h>
  42 #include <stdio.h>
  43
  44 #ifndef RADEON_INFO_WANT_HYPERZ
  45 #define RADEON_INFO_WANT_HYPERZ 7
  46 #endif
  47 #ifndef RADEON_INFO_WANT_CMASK
  48 #define RADEON_INFO_WANT_CMASK 8
  49 #endif
  50 #ifndef RADEON_INFO_NUM_BACKENDS
  51 #define RADEON_INFO_NUM_BACKENDS 10
  52 #endif
  53
  54 /* Enable/disable feature access for one command stream.
  55  * If enable == TRUE, return TRUE on success.
  56  * Otherwise, return FALSE.
  57  *
  58  * We basically do the same thing kernel does, because we have to deal
  59  * with multiple contexts (here command streams) backed by one winsys. */
  60 static boolean radeon_set_fd_access(struct radeon_drm_cs *applier,
  61                                     struct radeon_drm_cs **owner,
  62                                     pipe_mutex *mutex,
  63                                     unsigned request, boolean enable)
  64 {
  65     struct drm_radeon_info info = {0};
  66     unsigned value = enable ? 1 : 0;
  67
  68     pipe_mutex_lock(*mutex);
  69
  70     /* Early exit if we are sure the request will fail. */
  71     if (enable) {
  72         if (*owner) {
  73             pipe_mutex_unlock(*mutex);
  74             return FALSE;
  75         }
  76     } else {
  77         if (*owner != applier) {
  78             pipe_mutex_unlock(*mutex);
  79             return FALSE;
  80         }
  81     }
  82
  83     /* Pass through the request to the kernel. */
  84     info.value = (unsigned long)&value;
  85     info.request = request;
  86     if (drmCommandWriteRead(applier->ws->fd, DRM_RADEON_INFO,
  87                             &info, sizeof(info)) != 0) {
  88         pipe_mutex_unlock(*mutex);
  89         return FALSE;
  90     }
  91
  92     /* Update the rights in the winsys. */
  93     if (enable) {
  94         if (value) {
  95             *owner = applier;
  96             fprintf(stderr, "radeon: Acquired Hyper-Z.\n");
  97             pipe_mutex_unlock(*mutex);
  98             return TRUE;
  99         }
 100     } else {
 101         *owner = NULL;
 102         fprintf(stderr, "radeon: Released Hyper-Z.\n");
 103     }
 104
 105     pipe_mutex_unlock(*mutex);
 106     return FALSE;
 107 }
 108
 109 static boolean radeon_get_drm_value(int fd, unsigned request,
 110                                     const char *name, uint32_t *out)
 111 {
 112     struct drm_radeon_info info = {0};
 113     int retval;
 114
 115     info.value = (unsigned long)out;
 116     info.request = request;
 117
 118     retval = drmCommandWriteRead(fd, DRM_RADEON_INFO, &info, sizeof(info));
 119     if (retval) {
 120         fprintf(stderr, "%s: Failed to get %s, error number %d\n",
 121                 __func__, name, retval);
 122         return FALSE;
 123     }
 124     return TRUE;
 125 }
 126
 127 /* Helper function to do the ioctls needed for setup and init. */
 128 static boolean do_winsys_init(struct radeon_drm_winsys *ws)
 129 {
 130     struct drm_radeon_gem_info gem_info = {0};
 131     int retval;
 132     drmVersionPtr version;
 133
 134     /* We do things in a specific order here.
 135      *
 136      * DRM version first. We need to be sure we're running on a KMS chipset.
 137      * This is also for some features.
 138      *
 139      * Then, the PCI ID. This is essential and should return usable numbers
 140      * for all Radeons. If this fails, we probably got handed an FD for some
 141      * non-Radeon card.
 142      *
 143      * The GEM info is actually bogus on the kernel side, as well as our side
 144      * (see radeon_gem_info_ioctl in radeon_gem.c) but that's alright because
 145      * we don't actually use the info for anything yet.
 146      *
 147      * The GB and Z pipe requests should always succeed, but they might not
 148      * return sensical values for all chipsets, but that's alright because
 149      * the pipe drivers already know that.
 150      */
 151
 152     /* Get DRM version. */
 153     version = drmGetVersion(ws->fd);
 154     if (version->version_major != 2 ||
 155         version->version_minor < 3) {
 156         fprintf(stderr, "%s: DRM version is %d.%d.%d but this driver is "
 157                 "only compatible with 2.3.x (kernel 2.6.34) or later.\n",
 158                 __FUNCTION__,
 159                 version->version_major,
 160                 version->version_minor,
 161                 version->version_patchlevel);
 162         drmFreeVersion(version);
 163         return FALSE;
 164     }
 165
 166     ws->info.drm_major = version->version_major;
 167     ws->info.drm_minor = version->version_minor;
 168     ws->info.drm_patchlevel = version->version_patchlevel;
 169     drmFreeVersion(version);
 170
 171     /* Get PCI ID. */
 172     if (!radeon_get_drm_value(ws->fd, RADEON_INFO_DEVICE_ID, "PCI ID",
 173                               &ws->info.pci_id))
 174         return FALSE;
 175
 176     /* Check PCI ID. */
 177     switch (ws->info.pci_id) {
 178 #define CHIPSET(pci_id, name, family) case pci_id:
 179 #include "pci_ids/r300_pci_ids.h"
 180 #undef CHIPSET
 181         ws->gen = R300;
 182         break;
 183
 184 #define CHIPSET(pci_id, name, family) case pci_id:
 185 #include "pci_ids/r600_pci_ids.h"
 186 #undef CHIPSET
 187         ws->gen = R600;
 188         break;
 189
 190     default:
 191         fprintf(stderr, "radeon: Invalid PCI ID.\n");
 192         return FALSE;
 193     }
 194
 195     /* Get GEM info. */
 196     retval = drmCommandWriteRead(ws->fd, DRM_RADEON_GEM_INFO,
 197             &gem_info, sizeof(gem_info));
 198     if (retval) {
 199         fprintf(stderr, "%s: Failed to get MM info, error number %d\n",
 200                 __FUNCTION__, retval);
 201         return FALSE;
 202     }
 203     ws->info.gart_size = gem_info.gart_size;
 204     ws->info.vram_size = gem_info.vram_size;
 205
 206     ws->num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
 207
 208     /* Generation-specific queries. */
 209     if (ws->gen == R300) {
 210         if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_GB_PIPES,
 211                                   "GB pipe count",
 212                                   &ws->info.r300_num_gb_pipes))
 213             return FALSE;
 214
 215         if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_Z_PIPES,
 216                                   "Z pipe count",
 217                                   &ws->info.r300_num_z_pipes))
 218             return FALSE;
 219     }
 220     else if (ws->gen == R600) {
 221         if (!radeon_get_drm_value(ws->fd, RADEON_INFO_NUM_BACKENDS,
 222                                   "num backends",
 223                                   &ws->info.r600_num_backends))
 224             return FALSE;
 225     }
 226
 227     return TRUE;
 228 }
 229
 230 static void radeon_winsys_destroy(struct radeon_winsys *rws)
 231 {
 232     struct radeon_drm_winsys *ws = (struct radeon_drm_winsys*)rws;
 233
 234     pipe_mutex_destroy(ws->hyperz_owner_mutex);
 235     pipe_mutex_destroy(ws->cmask_owner_mutex);
 236
 237     ws->cman->destroy(ws->cman);
 238     ws->kman->destroy(ws->kman);
 239     FREE(rws);
 240 }
 241
 242 static void radeon_query_info(struct radeon_winsys *rws,
 243                               struct radeon_info *info)
 244 {
 245     *info = ((struct radeon_drm_winsys *)rws)->info;
 246 }
 247
 248 static boolean radeon_cs_request_feature(struct radeon_winsys_cs *rcs,
 249                                          enum radeon_feature_id fid,
 250                                          boolean enable)
 251 {
 252     struct radeon_drm_cs *cs = radeon_drm_cs(rcs);
 253
 254     switch (fid) {
 255     case RADEON_FID_R300_HYPERZ_ACCESS:
 256         if (debug_get_bool_option("RADEON_HYPERZ", FALSE)) {
 257             return radeon_set_fd_access(cs, &cs->ws->hyperz_owner,
 258                                         &cs->ws->hyperz_owner_mutex,
 259                                         RADEON_INFO_WANT_HYPERZ, enable);
 260         } else {
 261             return FALSE;
 262         }
 263
 264     case RADEON_FID_R300_CMASK_ACCESS:
 265         if (debug_get_bool_option("RADEON_CMASK", FALSE)) {
 266             return radeon_set_fd_access(cs, &cs->ws->cmask_owner,
 267                                         &cs->ws->cmask_owner_mutex,
 268                                         RADEON_INFO_WANT_CMASK, enable);
 269         } else {
 270             return FALSE;
 271         }
 272     }
 273     return FALSE;
 274 }
 275
 276 struct radeon_winsys *radeon_drm_winsys_create(int fd)
 277 {
 278     struct radeon_drm_winsys *ws = CALLOC_STRUCT(radeon_drm_winsys);
 279     if (!ws) {
 280         return NULL;
 281     }
 282
 283     ws->fd = fd;
 284     ws->info.fd = fd;
 285
 286     if (!do_winsys_init(ws))
 287         goto fail;
 288
 289     /* Create managers. */
 290     ws->kman = radeon_bomgr_create(ws);
 291     if (!ws->kman)
 292         goto fail;
 293     ws->cman = pb_cache_manager_create(ws->kman, 1000000);
 294     if (!ws->cman)
 295         goto fail;
 296
 297     /* Set functions. */
 298     ws->base.destroy = radeon_winsys_destroy;
 299     ws->base.query_info = radeon_query_info;
 300     ws->base.cs_request_feature = radeon_cs_request_feature;
 301
 302     radeon_bomgr_init_functions(ws);
 303     radeon_drm_cs_init_functions(ws);
 304
 305     pipe_mutex_init(ws->hyperz_owner_mutex);
 306     pipe_mutex_init(ws->cmask_owner_mutex);
 307
 308     return &ws->base;
 309
 310 fail:
 311     if (ws->cman)
 312         ws->cman->destroy(ws->cman);
 313     if (ws->kman)
 314         ws->kman->destroy(ws->kman);
 315     FREE(ws);
 316     return NULL;
 317 }