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