kernel/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 #if defined(CONFIG_DEBUG_FS)
  39 static int
  40 qxl_debugfs_irq_received(struct seq_file *m, void *data)
  41 {
  42         struct drm_info_node *node = (struct drm_info_node *) m->private;
  43         struct qxl_device *qdev = node->minor->dev->dev_private;
  44
  45         seq_printf(m, "%d\n", atomic_read(&qdev->irq_received));
  46         seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_display));
  47         seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_cursor));
  48         seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_io_cmd));
  49         seq_printf(m, "%d\n", qdev->irq_received_error);
  50         return 0;
  51 }
  52
  53 static int
  54 qxl_debugfs_buffers_info(struct seq_file *m, void *data)
  55 {
  56         struct drm_info_node *node = (struct drm_info_node *) m->private;
  57         struct qxl_device *qdev = node->minor->dev->dev_private;
  58         struct qxl_bo *bo;
  59
  60         list_for_each_entry(bo, &qdev->gem.objects, list) {
  61                 struct reservation_object_list *fobj;
  62                 int rel;
  63
  64                 rcu_read_lock();
  65                 fobj = rcu_dereference(bo->tbo.resv->fence);
  66                 rel = fobj ? fobj->shared_count : 0;
  67                 rcu_read_unlock();
  68
  69                 seq_printf(m, "size %ld, pc %d, num releases %d\n",
  70                            (unsigned long)bo->gem_base.size,
  71                            bo->pin_count, rel);
  72         }
  73         return 0;
  74 }
  75
  76 static struct drm_info_list qxl_debugfs_list[] = {
  77         { "irq_received", qxl_debugfs_irq_received, 0, NULL },
  78         { "qxl_buffers", qxl_debugfs_buffers_info, 0, NULL },
  79 };
  80 #define QXL_DEBUGFS_ENTRIES ARRAY_SIZE(qxl_debugfs_list)
  81 #endif
  82
  83 int
  84 qxl_debugfs_init(struct drm_minor *minor)
  85 {
  86 #if defined(CONFIG_DEBUG_FS)
  87         drm_debugfs_create_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES,
  88                                  minor->debugfs_root, minor);
  89 #endif
  90         return 0;
  91 }
  92
  93 void
  94 qxl_debugfs_takedown(struct drm_minor *minor)
  95 {
  96 #if defined(CONFIG_DEBUG_FS)
  97         drm_debugfs_remove_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES,
  98                                  minor);
  99 #endif
 100 }
 101
 102 int qxl_debugfs_add_files(struct qxl_device *qdev,
 103                           struct drm_info_list *files,
 104                           unsigned nfiles)
 105 {
 106         unsigned i;
 107
 108         for (i = 0; i < qdev->debugfs_count; i++) {
 109                 if (qdev->debugfs[i].files == files) {
 110                         /* Already registered */
 111                         return 0;
 112                 }
 113         }
 114
 115         i = qdev->debugfs_count + 1;
 116         if (i > QXL_DEBUGFS_MAX_COMPONENTS) {
 117                 DRM_ERROR("Reached maximum number of debugfs components.\n");
 118                 DRM_ERROR("Report so we increase QXL_DEBUGFS_MAX_COMPONENTS.\n");
 119                 return -EINVAL;
 120         }
 121         qdev->debugfs[qdev->debugfs_count].files = files;
 122         qdev->debugfs[qdev->debugfs_count].num_files = nfiles;
 123         qdev->debugfs_count = i;
 124 #if defined(CONFIG_DEBUG_FS)
 125         drm_debugfs_create_files(files, nfiles,
 126                                  qdev->ddev->control->debugfs_root,
 127                                  qdev->ddev->control);
 128         drm_debugfs_create_files(files, nfiles,
 129                                  qdev->ddev->primary->debugfs_root,
 130                                  qdev->ddev->primary);
 131 #endif
 132         return 0;
 133 }
 134
 135 void qxl_debugfs_remove_files(struct qxl_device *qdev)
 136 {
 137 #if defined(CONFIG_DEBUG_FS)
 138         unsigned i;
 139
 140         for (i = 0; i < qdev->debugfs_count; i++) {
 141                 drm_debugfs_remove_files(qdev->debugfs[i].files,
 142                                          qdev->debugfs[i].num_files,
 143                                          qdev->ddev->control);
 144                 drm_debugfs_remove_files(qdev->debugfs[i].files,
 145                                          qdev->debugfs[i].num_files,
 146                                          qdev->ddev->primary);
 147         }
 148 #endif
 149 }