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/drivers/gpu/drm/qxl/qxl_debugfs.c

https://gitlab.com/tbwtiot/kernel_source
C | 141 lines | 96 code | 16 blank | 29 comment | 5 complexity | c01e344d08a7d9519ed9717b89ff414b MD5 | raw file
  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		seq_printf(m, "size %ld, pc %d, sync obj %p, num releases %d\n",
 62			   (unsigned long)bo->gem_base.size, bo->pin_count,
 63			   bo->tbo.sync_obj, bo->fence.num_active_releases);
 64	}
 65	return 0;
 66}
 67
 68static struct drm_info_list qxl_debugfs_list[] = {
 69	{ "irq_received", qxl_debugfs_irq_received, 0, NULL },
 70	{ "qxl_buffers", qxl_debugfs_buffers_info, 0, NULL },
 71};
 72#define QXL_DEBUGFS_ENTRIES ARRAY_SIZE(qxl_debugfs_list)
 73#endif
 74
 75int
 76qxl_debugfs_init(struct drm_minor *minor)
 77{
 78#if defined(CONFIG_DEBUG_FS)
 79	drm_debugfs_create_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES,
 80				 minor->debugfs_root, minor);
 81#endif
 82	return 0;
 83}
 84
 85void
 86qxl_debugfs_takedown(struct drm_minor *minor)
 87{
 88#if defined(CONFIG_DEBUG_FS)
 89	drm_debugfs_remove_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES,
 90				 minor);
 91#endif
 92}
 93
 94int qxl_debugfs_add_files(struct qxl_device *qdev,
 95			  struct drm_info_list *files,
 96			  unsigned nfiles)
 97{
 98	unsigned i;
 99
100	for (i = 0; i < qdev->debugfs_count; i++) {
101		if (qdev->debugfs[i].files == files) {
102			/* Already registered */
103			return 0;
104		}
105	}
106
107	i = qdev->debugfs_count + 1;
108	if (i > QXL_DEBUGFS_MAX_COMPONENTS) {
109		DRM_ERROR("Reached maximum number of debugfs components.\n");
110		DRM_ERROR("Report so we increase QXL_DEBUGFS_MAX_COMPONENTS.\n");
111		return -EINVAL;
112	}
113	qdev->debugfs[qdev->debugfs_count].files = files;
114	qdev->debugfs[qdev->debugfs_count].num_files = nfiles;
115	qdev->debugfs_count = i;
116#if defined(CONFIG_DEBUG_FS)
117	drm_debugfs_create_files(files, nfiles,
118				 qdev->ddev->control->debugfs_root,
119				 qdev->ddev->control);
120	drm_debugfs_create_files(files, nfiles,
121				 qdev->ddev->primary->debugfs_root,
122				 qdev->ddev->primary);
123#endif
124	return 0;
125}
126
127void qxl_debugfs_remove_files(struct qxl_device *qdev)
128{
129#if defined(CONFIG_DEBUG_FS)
130	unsigned i;
131
132	for (i = 0; i < qdev->debugfs_count; i++) {
133		drm_debugfs_remove_files(qdev->debugfs[i].files,
134					 qdev->debugfs[i].num_files,
135					 qdev->ddev->control);
136		drm_debugfs_remove_files(qdev->debugfs[i].files,
137					 qdev->debugfs[i].num_files,
138					 qdev->ddev->primary);
139	}
140#endif
141}