drivers/gpu/drm/qxl/qxl_debugfs.c

   1 /*
   2  * Copyright (C) 2009 Red Hat <bskeggs@redhat.com>
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining
   5  * a copy of this software and associated documentation files (the
   6  * "Software"), to deal in the Software without restriction, including
   7  * without limitation the rights to use, copy, modify, merge, publish,
   8  * distribute, sublicense, and/or sell copies of the Software, and to
   9  * permit persons to whom the Software is furnished to do so, subject to
  10  * the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial
  14  * portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  17  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  18  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  19  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  20  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  21  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  22  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  *
  24  */
  25
  26 /*
  27  * Authors:
  28  *  Alon Levy <alevy@redhat.com>
  29  */
  30
  31 #include <linux/debugfs.h>
  32
  33 #include "drmP.h"
  34 #include "qxl_drv.h"
  35 #include "qxl_object.h"
  36
  37
  38 static int
  39 qxl_debugfs_irq_received(struct seq_file *m, void *data)
  40 {
  41         struct drm_info_node *node = (struct drm_info_node *) m->private;
  42         struct qxl_device *qdev = node->minor->dev->dev_private;
  43
  44         seq_printf(m, "%d\n", atomic_read(&qdev->irq_received));
  45         seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_display));
  46         seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_cursor));
  47         seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_io_cmd));
  48         seq_printf(m, "%d\n", qdev->irq_received_error);
  49         return 0;
  50 }
  51
  52 static int
  53 qxl_debugfs_buffers_info(struct seq_file *m, void *data)
  54 {
  55         struct drm_info_node *node = (struct drm_info_node *) m->private;
  56         struct qxl_device *qdev = node->minor->dev->dev_private;
  57         struct qxl_bo *bo;
  58
  59         list_for_each_entry(bo, &qdev->gem.objects, list) {
  60                 seq_printf(m, "size %ld, pc %d, sync obj %p, num releases %d\n",
  61                            (unsigned long)bo->gem_base.size, bo->pin_count,
  62                            bo->tbo.sync_obj, bo->fence.num_active_releases);
  63         }
  64         return 0;
  65 }
  66
  67 static struct drm_info_list qxl_debugfs_list[] = {
  68         { "irq_received", qxl_debugfs_irq_received, 0, NULL },
  69         { "qxl_buffers", qxl_debugfs_buffers_info, 0, NULL },
  70 };
  71 #define QXL_DEBUGFS_ENTRIES ARRAY_SIZE(qxl_debugfs_list)
  72
  73 int
  74 qxl_debugfs_init(struct drm_minor *minor)
  75 {
  76         drm_debugfs_create_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES,
  77                                  minor->debugfs_root, minor);
  78         return 0;
  79 }
  80
  81 void
  82 qxl_debugfs_takedown(struct drm_minor *minor)
  83 {
  84         drm_debugfs_remove_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES,
  85                                  minor);
  86 }
  87
  88 int qxl_debugfs_add_files(struct qxl_device *qdev,
  89                           struct drm_info_list *files,
  90                           unsigned nfiles)
  91 {
  92         unsigned i;
  93
  94         for (i = 0; i < qdev->debugfs_count; i++) {
  95                 if (qdev->debugfs[i].files == files) {
  96                         /* Already registered */
  97                         return 0;
  98                 }
  99         }
 100
 101         i = qdev->debugfs_count + 1;
 102         if (i > QXL_DEBUGFS_MAX_COMPONENTS) {
 103                 DRM_ERROR("Reached maximum number of debugfs components.\n");
 104                 DRM_ERROR("Report so we increase QXL_DEBUGFS_MAX_COMPONENTS.\n");
 105                 return -EINVAL;
 106         }
 107         qdev->debugfs[qdev->debugfs_count].files = files;
 108         qdev->debugfs[qdev->debugfs_count].num_files = nfiles;
 109         qdev->debugfs_count = i;
 110 #if defined(CONFIG_DEBUG_FS)
 111         drm_debugfs_create_files(files, nfiles,
 112                                  qdev->ddev->control->debugfs_root,
 113                                  qdev->ddev->control);
 114         drm_debugfs_create_files(files, nfiles,
 115                                  qdev->ddev->primary->debugfs_root,
 116                                  qdev->ddev->primary);
 117 #endif
 118         return 0;
 119 }
 120
 121 void qxl_debugfs_remove_files(struct qxl_device *qdev)
 122 {
 123 #if defined(CONFIG_DEBUG_FS)
 124         unsigned i;
 125
 126         for (i = 0; i < qdev->debugfs_count; i++) {
 127                 drm_debugfs_remove_files(qdev->debugfs[i].files,
 128                                          qdev->debugfs[i].num_files,
 129                                          qdev->ddev->control);
 130                 drm_debugfs_remove_files(qdev->debugfs[i].files,
 131                                          qdev->debugfs[i].num_files,
 132                                          qdev->ddev->primary);
 133         }
 134 #endif
 135 }