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