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