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->primary->debugfs_root,
127				 qdev->ddev->primary);
128#endif
129	return 0;
130}
131
132void qxl_debugfs_remove_files(struct qxl_device *qdev)
133{
134#if defined(CONFIG_DEBUG_FS)
135	unsigned i;
136
137	for (i = 0; i < qdev->debugfs_count; i++) {
138		drm_debugfs_remove_files(qdev->debugfs[i].files,
139					 qdev->debugfs[i].num_files,
140					 qdev->ddev->primary);
141	}
142#endif
143}