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qxl_debugfs.c revision 1.1.1.1.2.2 
      1 /*
      2  * Copyright (C) 2009 Red Hat <bskeggs (at) 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 (at) 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
     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
     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 		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 
     68 static 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 
     75 int
     76 qxl_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 
     85 void
     86 qxl_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 
     94 int 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 
    127 void 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 }
    142