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 /** @file drm_sysctl.c
  25  * Implementation of various sysctls for controlling DRM behavior and reporting
  26  * debug information.
  27  */
  28
  29 #include "drmP.h"
  30 #include "drm.h"
  31
  32 #include <sys/sysctl.h>
  33
  34 static int         drm_name_info DRM_SYSCTL_HANDLER_ARGS;
  35 static int         drm_vm_info DRM_SYSCTL_HANDLER_ARGS;
  36 static int         drm_clients_info DRM_SYSCTL_HANDLER_ARGS;
  37 static int         drm_bufs_info DRM_SYSCTL_HANDLER_ARGS;
  38
  39 struct drm_sysctl_list {
  40         const char *name;
  41         int        (*f) DRM_SYSCTL_HANDLER_ARGS;
  42 } drm_sysctl_list[] = {
  43         {"name",    drm_name_info},
  44         {"vm",      drm_vm_info},
  45         {"clients", drm_clients_info},
  46         {"bufs",    drm_bufs_info},
  47 };
  48 #define DRM_SYSCTL_ENTRIES (sizeof(drm_sysctl_list)/sizeof(drm_sysctl_list[0]))
  49
  50 struct drm_sysctl_info {
  51         struct sysctl_ctx_list ctx;
  52         char                   name[2];
  53 };
  54
  55 int drm_sysctl_init(struct drm_device *dev)
  56 {
  57         struct drm_sysctl_info *info;
  58         struct sysctl_oid *oid;
  59         struct sysctl_oid *top, *drioid;
  60         int               i;
  61
  62         info = malloc(sizeof *info, M_DRM, M_WAITOK | M_ZERO);
  63         if ( !info )
  64                 return 1;
  65         dev->sysctl = info;
  66
  67         /* Add the sysctl node for DRI if it doesn't already exist */
  68         drioid = SYSCTL_ADD_NODE( &info->ctx, &sysctl__hw_children, OID_AUTO, "dri", CTLFLAG_RW, NULL, "DRI Graphics");
  69         if (!drioid)
  70                 return 1;
  71
  72         /* Find the next free slot under hw.dri */
  73         i = 0;
  74         SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
  75                 if (i <= oid->oid_arg2)
  76                         i = oid->oid_arg2 + 1;
  77         }
  78         if (i>9)
  79                 return 1;
  80
  81         /* Add the hw.dri.x for our device */
  82         info->name[0] = '0' + i;
  83         info->name[1] = 0;
  84         top = SYSCTL_ADD_NODE( &info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
  85         if (!top)
  86                 return 1;
  87
  88         for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
  89                 oid = SYSCTL_ADD_OID(&info->ctx,
  90                         SYSCTL_CHILDREN(top),
  91                         OID_AUTO,
  92                         drm_sysctl_list[i].name,
  93                         CTLTYPE_INT | CTLFLAG_RD,
  94                         dev,
  95                         0,
  96                         drm_sysctl_list[i].f,
  97                         "A",
  98                         NULL);
  99                 if (!oid)
 100                         return 1;
 101         }
 102         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(top), OID_AUTO, "debug",
 103             CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag),
 104             "Enable debugging output");
 105
 106         return 0;
 107 }
 108
 109 int drm_sysctl_cleanup(struct drm_device *dev)
 110 {
 111         int error;
 112         error = sysctl_ctx_free( &dev->sysctl->ctx );
 113
 114         free(dev->sysctl, M_DRM);
 115         dev->sysctl = NULL;
 116
 117         return error;
 118 }
 119
 120 #define DRM_SYSCTL_PRINT(fmt, arg...)                           \
 121 do {                                                            \
 122         snprintf(buf, sizeof(buf), fmt, ##arg);                 \
 123         retcode = SYSCTL_OUT(req, buf, strlen(buf));            \
 124         if (retcode)                                            \
 125                 goto done;                                      \
 126 } while (0)
 127
 128 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
 129 {
 130         struct drm_device *dev = arg1;
 131         char buf[128];
 132         int retcode;
 133         int hasunique = 0;
 134
 135         DRM_SYSCTL_PRINT("%s 0x%x", dev->driver.name, dev2udev(dev->devnode));
 136
 137         DRM_LOCK();
 138         if (dev->unique) {
 139                 snprintf(buf, sizeof(buf), " %s", dev->unique);
 140                 hasunique = 1;
 141         }
 142         DRM_UNLOCK();
 143
 144         if (hasunique)
 145                 SYSCTL_OUT(req, buf, strlen(buf));
 146
 147         SYSCTL_OUT(req, "", 1);
 148
 149 done:
 150         return retcode;
 151 }
 152
 153 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 154 {
 155         struct drm_device *dev = arg1;
 156         drm_local_map_t *map, *tempmaps;
 157         const char   *types[] = { "FB", "REG", "SHM", "AGP", "SG" };
 158         const char *type, *yesno;
 159         int i, mapcount;
 160         char buf[128];
 161         int retcode;
 162
 163         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 164          * temporary copy of all the map entries and then SYSCTL_OUT that.
 165          */
 166         DRM_LOCK();
 167
 168         mapcount = 0;
 169         TAILQ_FOREACH(map, &dev->maplist, link)
 170                 mapcount++;
 171
 172         tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, M_DRM, M_NOWAIT);
 173         if (tempmaps == NULL) {
 174                 DRM_UNLOCK();
 175                 return ENOMEM;
 176         }
 177
 178         i = 0;
 179         TAILQ_FOREACH(map, &dev->maplist, link)
 180                 tempmaps[i++] = *map;
 181
 182         DRM_UNLOCK();
 183
 184         DRM_SYSCTL_PRINT("\nslot         offset       size type flags    "
 185                          "address mtrr\n");
 186
 187         for (i = 0; i < mapcount; i++) {
 188                 map = &tempmaps[i];
 189
 190                 if (map->type < 0 || map->type > 4)
 191                         type = "??";
 192                 else
 193                         type = types[map->type];
 194
 195                 if (!map->mtrr)
 196                         yesno = "no";
 197                 else
 198                         yesno = "yes";
 199
 200                 DRM_SYSCTL_PRINT(
 201                     "%4d 0x%08lx 0x%08lx %4.4s  0x%02x 0x%08lx %s\n", i,
 202                     map->offset, map->size, type, map->flags,
 203                     (unsigned long)map->handle, yesno);
 204         }
 205         SYSCTL_OUT(req, "", 1);
 206
 207 done:
 208         free(tempmaps, M_DRM);
 209         return retcode;
 210 }
 211
 212 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 213 {
 214         struct drm_device        *dev = arg1;
 215         drm_device_dma_t *dma = dev->dma;
 216         drm_device_dma_t tempdma;
 217         int *templists;
 218         int i;
 219         char buf[128];
 220         int retcode;
 221
 222         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 223          * copy of the whole structure and the relevant data from buflist.
 224          */
 225         DRM_LOCK();
 226         if (dma == NULL) {
 227                 DRM_UNLOCK();
 228                 return 0;
 229         }
 230         DRM_SPINLOCK(&dev->dma_lock);
 231         tempdma = *dma;
 232         templists = malloc(sizeof(int) * dma->buf_count, M_DRM, M_NOWAIT);
 233         for (i = 0; i < dma->buf_count; i++)
 234                 templists[i] = dma->buflist[i]->list;
 235         dma = &tempdma;
 236         DRM_SPINUNLOCK(&dev->dma_lock);
 237         DRM_UNLOCK();
 238
 239         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 240         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 241                 if (dma->bufs[i].buf_count)
 242                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 243                                        i,
 244                                        dma->bufs[i].buf_size,
 245                                        dma->bufs[i].buf_count,
 246                                        atomic_read(&dma->bufs[i]
 247                                                    .freelist.count),
 248                                        dma->bufs[i].seg_count,
 249                                        dma->bufs[i].seg_count
 250                                        *(1 << dma->bufs[i].page_order),
 251                                        (dma->bufs[i].seg_count
 252                                         * (1 << dma->bufs[i].page_order))
 253                                        * PAGE_SIZE / 1024);
 254         }
 255         DRM_SYSCTL_PRINT("\n");
 256         for (i = 0; i < dma->buf_count; i++) {
 257                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 258                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 259         }
 260         DRM_SYSCTL_PRINT("\n");
 261
 262         SYSCTL_OUT(req, "", 1);
 263 done:
 264         free(templists, M_DRM);
 265         return retcode;
 266 }
 267
 268 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 269 {
 270         struct drm_device *dev = arg1;
 271         drm_file_t *priv, *tempprivs;
 272         char buf[128];
 273         int retcode;
 274         int privcount, i;
 275
 276         DRM_LOCK();
 277
 278         privcount = 0;
 279         TAILQ_FOREACH(priv, &dev->files, link)
 280                 privcount++;
 281
 282         tempprivs = malloc(sizeof(drm_file_t) * privcount, M_DRM, M_NOWAIT);
 283         if (tempprivs == NULL) {
 284                 DRM_UNLOCK();
 285                 return ENOMEM;
 286         }
 287         i = 0;
 288         TAILQ_FOREACH(priv, &dev->files, link)
 289                 tempprivs[i++] = *priv;
 290
 291         DRM_UNLOCK();
 292
 293         DRM_SYSCTL_PRINT("\na dev       pid    uid      magic     ioctls\n");
 294         for (i = 0; i < privcount; i++) {
 295                 priv = &tempprivs[i];
 296                 DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n",
 297                                priv->authenticated ? 'y' : 'n',
 298                                priv->minor,
 299                                priv->pid,
 300                                priv->uid,
 301                                priv->magic,
 302                                priv->ioctl_count);
 303         }
 304
 305         SYSCTL_OUT(req, "", 1);
 306 done:
 307         free(tempprivs, M_DRM);
 308         return retcode;
 309 }