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 /** @file drm_sysctl.c
  25  * Implementation of various sysctls for controlling DRM behavior and reporting
  26  * debug information.
  27  */
  28
  29 #include "dev/drm/drmP.h"
  30 #include "dev/drm/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 static int         drm_vblank_info DRM_SYSCTL_HANDLER_ARGS;
  39
  40 struct drm_sysctl_list {
  41         const char *name;
  42         int        (*f) DRM_SYSCTL_HANDLER_ARGS;
  43 } drm_sysctl_list[] = {
  44         {"name",    drm_name_info},
  45         {"vm",      drm_vm_info},
  46         {"clients", drm_clients_info},
  47         {"bufs",    drm_bufs_info},
  48         {"vblank",    drm_vblank_info},
  49 };
  50 #define DRM_SYSCTL_ENTRIES NELEM(drm_sysctl_list)
  51
  52 struct drm_sysctl_info {
  53         struct sysctl_ctx_list ctx;
  54         char                   name[2];
  55 };
  56
  57 int drm_sysctl_init(struct drm_device *dev)
  58 {
  59         struct drm_sysctl_info *info;
  60         struct sysctl_oid *oid;
  61         struct sysctl_oid *top, *drioid;
  62         int               i;
  63
  64         info = malloc(sizeof *info, DRM_MEM_DRIVER, M_WAITOK | M_ZERO);
  65         if ( !info )
  66                 return 1;
  67         dev->sysctl = info;
  68
  69         /* Add the sysctl node for DRI if it doesn't already exist */
  70         drioid = SYSCTL_ADD_NODE( &info->ctx, &sysctl__hw_children, OID_AUTO, "dri", CTLFLAG_RW, NULL, "DRI Graphics");
  71         if (!drioid)
  72                 return 1;
  73
  74         /* Find the next free slot under hw.dri */
  75         i = 0;
  76         SLIST_FOREACH(oid, SYSCTL_CHILDREN(drioid), oid_link) {
  77                 if (i <= oid->oid_arg2)
  78                         i = oid->oid_arg2 + 1;
  79         }
  80         if (i>9)
  81                 return 1;
  82
  83         /* Add the hw.dri.x for our device */
  84         info->name[0] = '0' + i;
  85         info->name[1] = 0;
  86         top = SYSCTL_ADD_NODE( &info->ctx, SYSCTL_CHILDREN(drioid), OID_AUTO, info->name, CTLFLAG_RW, NULL, NULL);
  87         if (!top)
  88                 return 1;
  89
  90         for (i = 0; i < DRM_SYSCTL_ENTRIES; i++) {
  91                 oid = SYSCTL_ADD_OID(&info->ctx,
  92                         SYSCTL_CHILDREN(top),
  93                         OID_AUTO,
  94                         drm_sysctl_list[i].name,
  95                         CTLTYPE_INT | CTLFLAG_RD,
  96                         dev,
  97                         0,
  98                         drm_sysctl_list[i].f,
  99                         "A",
 100                         NULL);
 101                 if (!oid)
 102                         return 1;
 103         }
 104         SYSCTL_ADD_INT(&info->ctx, SYSCTL_CHILDREN(top), OID_AUTO, "debug",
 105             CTLFLAG_RW, &drm_debug_flag, sizeof(drm_debug_flag),
 106             "Enable debugging output");
 107
 108         return 0;
 109 }
 110
 111 int drm_sysctl_cleanup(struct drm_device *dev)
 112 {
 113         int error;
 114         error = sysctl_ctx_free( &dev->sysctl->ctx );
 115
 116         free(dev->sysctl, DRM_MEM_DRIVER);
 117         dev->sysctl = NULL;
 118
 119         return error;
 120 }
 121
 122 #define DRM_SYSCTL_PRINT(fmt, arg...)                           \
 123 do {                                                            \
 124         snprintf(buf, sizeof(buf), fmt, ##arg);                 \
 125         retcode = SYSCTL_OUT(req, buf, strlen(buf));            \
 126         if (retcode)                                            \
 127                 goto done;                                      \
 128 } while (0)
 129
 130 static int drm_name_info DRM_SYSCTL_HANDLER_ARGS
 131 {
 132         struct drm_device *dev = arg1;
 133         char buf[128];
 134         int retcode;
 135         int hasunique = 0;
 136
 137         DRM_SYSCTL_PRINT("%s 0x%x", dev->driver->name, dev2udev(dev->devnode));
 138
 139         DRM_LOCK();
 140         if (dev->unique) {
 141                 snprintf(buf, sizeof(buf), " %s", dev->unique);
 142                 hasunique = 1;
 143         }
 144         DRM_UNLOCK();
 145
 146         if (hasunique)
 147                 SYSCTL_OUT(req, buf, strlen(buf));
 148
 149         SYSCTL_OUT(req, "", 1);
 150
 151 done:
 152         return retcode;
 153 }
 154
 155 static int drm_vm_info DRM_SYSCTL_HANDLER_ARGS
 156 {
 157         struct drm_device *dev = arg1;
 158         drm_local_map_t *map, *tempmaps;
 159         const char   *types[] = { "FB", "REG", "SHM", "AGP", "SG" };
 160         const char *type, *yesno;
 161         int i, mapcount;
 162         char buf[128];
 163         int retcode;
 164
 165         /* We can't hold the lock while doing SYSCTL_OUTs, so allocate a
 166          * temporary copy of all the map entries and then SYSCTL_OUT that.
 167          */
 168         DRM_LOCK();
 169
 170         mapcount = 0;
 171         TAILQ_FOREACH(map, &dev->maplist, link)
 172                 mapcount++;
 173
 174         tempmaps = malloc(sizeof(drm_local_map_t) * mapcount, DRM_MEM_DRIVER,
 175             M_NOWAIT);
 176         if (tempmaps == NULL) {
 177                 DRM_UNLOCK();
 178                 return ENOMEM;
 179         }
 180
 181         i = 0;
 182         TAILQ_FOREACH(map, &dev->maplist, link)
 183                 tempmaps[i++] = *map;
 184
 185         DRM_UNLOCK();
 186
 187         DRM_SYSCTL_PRINT("\nslot offset         size       "
 188             "type flags address            mtrr\n");
 189
 190         for (i = 0; i < mapcount; i++) {
 191                 map = &tempmaps[i];
 192
 193                 if (map->type < 0 || map->type > 4)
 194                         type = "??";
 195                 else
 196                         type = types[map->type];
 197
 198                 if (!map->mtrr)
 199                         yesno = "no";
 200                 else
 201                         yesno = "yes";
 202
 203                 DRM_SYSCTL_PRINT(
 204                     "%4d 0x%016lx 0x%08lx %4.4s  0x%02x 0x%016lx %s\n", i,
 205                     map->offset, map->size, type, map->flags,
 206                     (unsigned long)map->handle, yesno);
 207         }
 208         SYSCTL_OUT(req, "", 1);
 209
 210 done:
 211         free(tempmaps, DRM_MEM_DRIVER);
 212         return retcode;
 213 }
 214
 215 static int drm_bufs_info DRM_SYSCTL_HANDLER_ARGS
 216 {
 217         struct drm_device        *dev = arg1;
 218         drm_device_dma_t *dma = dev->dma;
 219         drm_device_dma_t tempdma;
 220         int *templists;
 221         int i;
 222         char buf[128];
 223         int retcode;
 224
 225         /* We can't hold the locks around DRM_SYSCTL_PRINT, so make a temporary
 226          * copy of the whole structure and the relevant data from buflist.
 227          */
 228         DRM_LOCK();
 229         if (dma == NULL) {
 230                 DRM_UNLOCK();
 231                 return 0;
 232         }
 233         DRM_SPINLOCK(&dev->dma_lock);
 234         tempdma = *dma;
 235         templists = malloc(sizeof(int) * dma->buf_count, DRM_MEM_DRIVER,
 236             M_NOWAIT);
 237         for (i = 0; i < dma->buf_count; i++)
 238                 templists[i] = dma->buflist[i]->list;
 239         dma = &tempdma;
 240         DRM_SPINUNLOCK(&dev->dma_lock);
 241         DRM_UNLOCK();
 242
 243         DRM_SYSCTL_PRINT("\n o     size count  free      segs pages    kB\n");
 244         for (i = 0; i <= DRM_MAX_ORDER; i++) {
 245                 if (dma->bufs[i].buf_count)
 246                         DRM_SYSCTL_PRINT("%2d %8d %5d %5d %5d %5d %5d\n",
 247                                        i,
 248                                        dma->bufs[i].buf_size,
 249                                        dma->bufs[i].buf_count,
 250                                        atomic_read(&dma->bufs[i]
 251                                                    .freelist.count),
 252                                        dma->bufs[i].seg_count,
 253                                        dma->bufs[i].seg_count
 254                                        *(1 << dma->bufs[i].page_order),
 255                                        (dma->bufs[i].seg_count
 256                                         * (1 << dma->bufs[i].page_order))
 257                                        * PAGE_SIZE / 1024);
 258         }
 259         DRM_SYSCTL_PRINT("\n");
 260         for (i = 0; i < dma->buf_count; i++) {
 261                 if (i && !(i%32)) DRM_SYSCTL_PRINT("\n");
 262                 DRM_SYSCTL_PRINT(" %d", templists[i]);
 263         }
 264         DRM_SYSCTL_PRINT("\n");
 265
 266         SYSCTL_OUT(req, "", 1);
 267 done:
 268         free(templists, DRM_MEM_DRIVER);
 269         return retcode;
 270 }
 271
 272 static int drm_clients_info DRM_SYSCTL_HANDLER_ARGS
 273 {
 274         struct drm_device *dev = arg1;
 275         struct drm_file *priv, *tempprivs;
 276         char buf[128];
 277         int retcode;
 278         int privcount, i;
 279
 280         DRM_LOCK();
 281
 282         privcount = 0;
 283         TAILQ_FOREACH(priv, &dev->files, link)
 284                 privcount++;
 285
 286         tempprivs = malloc(sizeof(struct drm_file) * privcount, DRM_MEM_DRIVER,
 287             M_NOWAIT);
 288         if (tempprivs == NULL) {
 289                 DRM_UNLOCK();
 290                 return ENOMEM;
 291         }
 292         i = 0;
 293         TAILQ_FOREACH(priv, &dev->files, link)
 294                 tempprivs[i++] = *priv;
 295
 296         DRM_UNLOCK();
 297
 298         DRM_SYSCTL_PRINT("\na dev       pid    uid      magic     ioctls\n");
 299         for (i = 0; i < privcount; i++) {
 300                 priv = &tempprivs[i];
 301                 DRM_SYSCTL_PRINT("%c %3d %5d %5d %10u %10lu\n",
 302                                priv->authenticated ? 'y' : 'n',
 303                                priv->minor,
 304                                priv->pid,
 305                                priv->uid,
 306                                priv->magic,
 307                                priv->ioctl_count);
 308         }
 309
 310         SYSCTL_OUT(req, "", 1);
 311 done:
 312         free(tempprivs, DRM_MEM_DRIVER);
 313         return retcode;
 314 }
 315
 316 static int drm_vblank_info DRM_SYSCTL_HANDLER_ARGS
 317 {
 318         struct drm_device *dev = arg1;
 319         char buf[128];
 320         int retcode;
 321         int i;
 322
 323         DRM_SYSCTL_PRINT("\ncrtc ref count    last     enabled inmodeset\n");
 324         for(i = 0 ; i < dev->num_crtcs ; i++) {
 325                 DRM_SYSCTL_PRINT("  %02d  %02d %08d %08d %02d      %02d\n",
 326                     i, atomic_load_acq_32(&dev->vblank[i].refcount),
 327                     atomic_load_acq_32(&dev->vblank[i].count),
 328                     atomic_load_acq_32(&dev->vblank[i].last),
 329                     atomic_load_acq_int(&dev->vblank[i].enabled),
 330                     atomic_load_acq_int(&dev->vblank[i].inmodeset));
 331         }
 332
 333         SYSCTL_OUT(req, "", -1);
 334 done:
 335         return retcode;
 336 }