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
qxl_debugfs_irq_received(struct seq_file * m,void * data)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
qxl_debugfs_buffers_info(struct seq_file * m,void * data)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
qxl_debugfs_init(struct drm_minor * minor)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
qxl_debugfs_takedown(struct drm_minor * minor)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
qxl_debugfs_add_files(struct qxl_device * qdev,struct drm_info_list * files,unsigned nfiles)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
qxl_debugfs_remove_files(struct qxl_device * qdev)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 }
150