sys/dev/drm/drm_sysctl.c

   1 /*-
   2  * Copyright 2003 Eric Anholt
   3  * All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * ERIC ANHOLT BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  20  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  21  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include <sys/cdefs.h>
  25 __FBSDID("$FreeBSD$");
  26
  27 /** @file drm_sysctl.c
  28  * Implementation of various sysctls for controlling DRM behavior and reporting
  29  * debug information.
  30  */
  31
  32 #include "dev/drm/drmP.h"
  33 #include "dev/drm/drm.h"
  34
  35 #include <sys/sysctl.h>
  36
  37 static int         drm_name_info DRM_SYSCTL_HANDLER_ARGS;
  38 static int         drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
  39 static int         drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
  40 static int         drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
  41
  42 struct drm_sysctl_list {
  43         const char *name;
  44         int        (*f) DRM_SYSCTL_HANDLER_ARGS;
  45 } drm_sysctl_list[] = {
  46         {"name",    drm_name_info},
  47         {"vm",      drm_vm_info},
  48         {"clients", drm_clients_info},
  49         {"bufs",    drm_bufs_info},
  50 };
  51 #define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
  52
  53 struct drm_sysctl_info {
  54         struct sysctl_ctx_list ctx;
  55         char                   name[2];
  56 };
  57
  58 int drm_sysctl_init(struct drm_device *dev)
  59 {
  60         struct drm_sysctl_info *info;
  61         struct sysctl_oid *oid;
  62         struct sysctl_oid *top, *drioid;
  63         int               i;
  64
  65         info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
  66         if ( !info )
  67                 return 1;
  68         dev->sysctl = info;
  69
  70         /* Add the sysctl node for DRI if it doesn't already exist */
  71         drioid = SYSCTL_ADD_NODE( &info->ctx, &sysctl__hw_children, OID_AUTO, "dri", CTLFLAG_RW, NULL, "DRI Graphics");
  72         if (!drioid)
  73                 return 1;
  74
  75         /* Find the next free slot under hw.dri */
  76         i = 0;
  77         SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
  78                 if (i <= oid->oid_arg2)
  79                         i = oid->oid_arg2 + 1;
  80         }
  81         if (i>9)
  82                 return 1;
  83
  84         /* Add the hw.dri.x for our device */
  85         info->name[0] = '0' + i;
  86         info->name[1] = 0;
  87         top = SYSCTL_ADD_NODE( &info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
  88         if (!top)
  89                 return 1;
  90
  91         for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
  92                 oid = SYSCTL_ADD_OID(&info->ctx,
  93                         SYSCTL_CHILDREN(top),
  94                         OID_AUTO,
  95                         drm_sysctl_list[i].name,
  96                         CTLTYPE_INT | CTLFLAG_RD,
  97                         dev,
  98                         0,
  99                         drm_sysctl_list[i].f,
 100                         "A",
 101                         NULL);
 102                 if (!oid)
 103                         return 1;
 104         }
 105         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(top), OID_AUTO, "debug",
 106             CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag),
 107             "Enable debugging output");
 108
 109         return 0;
 110 }
 111
 112 int drm_sysctl_cleanup(struct drm_device *dev)
 113 {
 114         int error;
 115         error = sysctl_ctx_free( &dev->sysctl->ctx );
 116
 117         free(dev->sysctl, DRM_MEM_DRIVER);
 118         dev->sysctl = NULL;
 119
 120         return error;
 121 }
 122
 123 #define DRM_SYSCTL_PRINT(fmt, arg...)                           \
 124 do {                                                            \
 125         snprintf(buf, sizeof(buf), fmt, ##arg);                 \
 126         retcode = SYSCTL_OUT(req, buf, strlen(buf));            \
 127         if (retcode)                                            \
 128                 goto done;                                      \
 129 } while (0)
 130
 131 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
 132 {
 133         struct drm_device *dev = arg1;
 134         char buf[128];
 135         int retcode;
 136         int hasunique = 0;
 137
 138         DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode));
 139
 140         DRM_LOCK();
 141         if (dev->unique) {
 142                 snprintf(buf, sizeof(buf), " %s", dev->unique);
 143                 hasunique = 1;
 144         }
 145         DRM_UNLOCK();
 146
 147         if (hasunique)
 148                 SYSCTL_OUT(req, buf, strlen(buf));
 149
 150         SYSCTL_OUT(req, "", 1);
 151
 152 done:
 153         return retcode;
 154 }
 155
 156 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 157 {
 158         struct drm_device *dev = arg1;
 159         drm_local_map_t *map, *tempmaps;
 160         const char   *types[] = { "FB", "REG", "SHM", "AGP", "SG" };
 161         const char *type, *yesno;
 162         int i, mapcount;
 163         char buf[128];
 164         int retcode;
 165
 166         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 167          * temporary copy of all the map entries and then SYSCTL_OUT that.
 168          */
 169         DRM_LOCK();
 170
 171         mapcount = 0;
 172         TAILQ_FOREACH(map, &dev->maplist, link)
 173                 mapcount++;
 174
 175         tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER,
 176             M_NOWAIT);
 177         if (tempmaps == NULL) {
 178                 DRM_UNLOCK();
 179                 return ENOMEM;
 180         }
 181
 182         i = 0;
 183         TAILQ_FOREACH(map, &dev->maplist, link)
 184                 tempmaps[i++] = *map;
 185
 186         DRM_UNLOCK();
 187
 188         DRM_SYSCTL_PRINT("\nslot offset         size       "
 189             "type flags address            mtrr\n");
 190
 191         for (i = 0; i < mapcount; i++) {
 192                 map = &tempmaps[i];
 193
 194                 if (map->type < 0 || map->type > 4)
 195                         type = "??";
 196                 else
 197                         type = types[map->type];
 198
 199                 if (!map->mtrr)
 200                         yesno = "no";
 201                 else
 202                         yesno = "yes";
 203
 204                 DRM_SYSCTL_PRINT(
 205                     "%4d 0x%016lx 0x%08lx %4.4s  0x%02x 0x%016lx %s\n", i,
 206                     map->offset, map->size, type, map->flags,
 207                     (unsigned long)map->handle, yesno);
 208         }
 209         SYSCTL_OUT(req, "", 1);
 210
 211 done:
 212         free(tempmaps, DRM_MEM_DRIVER);
 213         return retcode;
 214 }
 215
 216 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 217 {
 218         struct drm_device        *dev = arg1;
 219         drm_device_dma_t *dma = dev->dma;
 220         drm_device_dma_t tempdma;
 221         int *templists;
 222         int i;
 223         char buf[128];
 224         int retcode;
 225
 226         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 227          * copy of the whole structure and the relevant data from buflist.
 228          */
 229         DRM_LOCK();
 230         if (dma == NULL) {
 231                 DRM_UNLOCK();
 232                 return 0;
 233         }
 234         DRM_SPINLOCK(&dev->dma_lock);
 235         tempdma = *dma;
 236         templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
 237             M_NOWAIT);
 238         for (i = 0; i < dma->buf_count; i++)
 239                 templists[i] = dma->buflist[i]->list;
 240         dma = &tempdma;
 241         DRM_SPINUNLOCK(&dev->dma_lock);
 242         DRM_UNLOCK();
 243
 244         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 245         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 246                 if (dma->bufs[i].buf_count)
 247                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 248                                        i,
 249                                        dma->bufs[i].buf_size,
 250                                        dma->bufs[i].buf_count,
 251                                        atomic_read(&dma->bufs[i]
 252                                                    .freelist.count),
 253                                        dma->bufs[i].seg_count,
 254                                        dma->bufs[i].seg_count
 255                                        *(1 << dma->bufs[i].page_order),
 256                                        (dma->bufs[i].seg_count
 257                                         * (1 << dma->bufs[i].page_order))
 258                                        * PAGE_SIZE / 1024);
 259         }
 260         DRM_SYSCTL_PRINT("\n");
 261         for (i = 0; i < dma->buf_count; i++) {
 262                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 263                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 264         }
 265         DRM_SYSCTL_PRINT("\n");
 266
 267         SYSCTL_OUT(req, "", 1);
 268 done:
 269         free(templists, DRM_MEM_DRIVER);
 270         return retcode;
 271 }
 272
 273 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 274 {
 275         struct drm_device *dev = arg1;
 276         struct drm_file *priv, *tempprivs;
 277         char buf[128];
 278         int retcode;
 279         int privcount, i;
 280
 281         DRM_LOCK();
 282
 283         privcount = 0;
 284         TAILQ_FOREACH(priv, &dev->files, link)
 285                 privcount++;
 286
 287         tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
 288             M_NOWAIT);
 289         if (tempprivs == NULL) {
 290                 DRM_UNLOCK();
 291                 return ENOMEM;
 292         }
 293         i = 0;
 294         TAILQ_FOREACH(priv, &dev->files, link)
 295                 tempprivs[i++] = *priv;
 296
 297         DRM_UNLOCK();
 298
 299         DRM_SYSCTL_PRINT("\na dev       pid    uid      magic     ioctls\n");
 300         for (i = 0; i < privcount; i++) {
 301                 priv = &tempprivs[i];
 302                 DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n",
 303                                priv->authenticated ? 'y' : 'n',
 304                                priv->minor,
 305                                priv->pid,
 306                                priv->uid,
 307                                priv->magic,
 308                                priv->ioctl_count);
 309         }
 310
 311         SYSCTL_OUT(req, "", 1);
 312 done:
 313         free(tempprivs, DRM_MEM_DRIVER);
 314         return retcode;
 315 }