drivers/gpu/drm/nouveau/nvkm/core/printk.c

   1 /*
   2  * Copyright 2012 Red Hat Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included in
  12  * all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20  * OTHER DEALINGS IN THE SOFTWARE.
  21  *
  22  * Authors: Ben Skeggs
  23  */
  24 #include <core/printk.h>
  25 #include <core/client.h>
  26 #include <core/device.h>
  27
  28 int nv_info_debug_level = NV_DBG_INFO_NORMAL;
  29
  30 void
  31 nv_printk_(struct nvkm_object *object, int level, const char *fmt, ...)
  32 {
  33         static const char name[] = { '!', 'E', 'W', ' ', 'D', 'T', 'P', 'S' };
  34         const char *pfx;
  35         char mfmt[256];
  36         va_list args;
  37
  38         switch (level) {
  39         case NV_DBG_FATAL:
  40                 pfx = KERN_CRIT;
  41                 break;
  42         case NV_DBG_ERROR:
  43                 pfx = KERN_ERR;
  44                 break;
  45         case NV_DBG_WARN:
  46                 pfx = KERN_WARNING;
  47                 break;
  48         case NV_DBG_INFO_NORMAL:
  49                 pfx = KERN_INFO;
  50                 break;
  51         case NV_DBG_DEBUG:
  52         case NV_DBG_PARANOIA:
  53         case NV_DBG_TRACE:
  54         case NV_DBG_SPAM:
  55         default:
  56                 pfx = KERN_DEBUG;
  57                 break;
  58         }
  59
  60         if (object && !nv_iclass(object, NV_CLIENT_CLASS)) {
  61                 struct nvkm_object *device;
  62                 struct nvkm_object *subdev;
  63                 char obuf[64], *ofmt = "";
  64
  65                 if (object->engine == NULL) {
  66                         subdev = object;
  67                         while (subdev && !nv_iclass(subdev, NV_SUBDEV_CLASS))
  68                                 subdev = subdev->parent;
  69                 } else {
  70                         subdev = &object->engine->subdev.object;
  71                 }
  72
  73                 device = subdev;
  74                 if (device->parent)
  75                         device = device->parent;
  76
  77                 if (object != subdev) {
  78                         snprintf(obuf, sizeof(obuf), "[0x%08x]",
  79                                  nv_hclass(object));
  80                         ofmt = obuf;
  81                 }
  82
  83                 if (level > nv_subdev(subdev)->debug)
  84                         return;
  85
  86                 snprintf(mfmt, sizeof(mfmt), "%snouveau %c[%8s][%s]%s %s", pfx,
  87                          name[level], nv_subdev(subdev)->name,
  88                          nv_device(device)->name, ofmt, fmt);
  89         } else
  90         if (object && nv_iclass(object, NV_CLIENT_CLASS)) {
  91                 if (level > nv_client(object)->debug)
  92                         return;
  93
  94                 snprintf(mfmt, sizeof(mfmt), "%snouveau %c[%8s] %s", pfx,
  95                          name[level], nv_client(object)->name, fmt);
  96         } else {
  97                 snprintf(mfmt, sizeof(mfmt), "%snouveau: %s", pfx, fmt);
  98         }
  99
 100         va_start(args, fmt);
 101         vprintk(mfmt, args);
 102         va_end(args);
 103 }