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