LXR linux/drivers/gpu/drm/qxl/qxl

   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)
  39static int
  40qxl_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
  53static int
  54qxl_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
  76static 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
  83int
  84qxl_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
  93void
  94qxl_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
 102int 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
 135void 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}
 150