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      1 /*	$NetBSD: qxl_debugfs.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 2009 Red Hat <bskeggs (at) redhat.com>
      5  *
      6  * Permission is hereby granted, free of charge, to any person obtaining
      7  * a copy of this software and associated documentation files (the
      8  * "Software"), to deal in the Software without restriction, including
      9  * without limitation the rights to use, copy, modify, merge, publish,
     10  * distribute, sublicense, and/or sell copies of the Software, and to
     11  * permit persons to whom the Software is furnished to do so, subject to
     12  * the following conditions:
     13  *
     14  * The above copyright notice and this permission notice (including the
     15  * next paragraph) shall be included in all copies or substantial
     16  * portions of the Software.
     17  *
     18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     19  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
     21  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
     22  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     23  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     24  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     25  *
     26  */
     27 
     28 /*
     29  * Authors:
     30  *  Alon Levy <alevy (at) redhat.com>
     31  */
     32 
     33 #include <sys/cdefs.h>
     34 __KERNEL_RCSID(0, "$NetBSD: qxl_debugfs.c,v 1.3 2021/12/18 23:45:42 riastradh Exp $");
     35 
     36 #include <drm/drm_debugfs.h>
     37 #include <drm/drm_file.h>
     38 
     39 #include "qxl_drv.h"
     40 #include "qxl_object.h"
     41 
     42 #if defined(CONFIG_DEBUG_FS)
     43 static int
     44 qxl_debugfs_irq_received(struct seq_file *m, void *data)
     45 {
     46 	struct drm_info_node *node = (struct drm_info_node *) m->private;
     47 	struct qxl_device *qdev = node->minor->dev->dev_private;
     48 
     49 	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received));
     50 	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_display));
     51 	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_cursor));
     52 	seq_printf(m, "%d\n", atomic_read(&qdev->irq_received_io_cmd));
     53 	seq_printf(m, "%d\n", qdev->irq_received_error);
     54 	return 0;
     55 }
     56 
     57 static int
     58 qxl_debugfs_buffers_info(struct seq_file *m, void *data)
     59 {
     60 	struct drm_info_node *node = (struct drm_info_node *) m->private;
     61 	struct qxl_device *qdev = node->minor->dev->dev_private;
     62 	struct qxl_bo *bo;
     63 
     64 	list_for_each_entry(bo, &qdev->gem.objects, list) {
     65 		struct dma_resv_list *fobj;
     66 		int rel;
     67 
     68 		rcu_read_lock();
     69 		fobj = rcu_dereference(bo->tbo.base.resv->fence);
     70 		rel = fobj ? fobj->shared_count : 0;
     71 		rcu_read_unlock();
     72 
     73 		seq_printf(m, "size %ld, pc %d, num releases %d\n",
     74 			   (unsigned long)bo->tbo.base.size,
     75 			   bo->pin_count, rel);
     76 	}
     77 	return 0;
     78 }
     79 
     80 static struct drm_info_list qxl_debugfs_list[] = {
     81 	{ "irq_received", qxl_debugfs_irq_received, 0, NULL },
     82 	{ "qxl_buffers", qxl_debugfs_buffers_info, 0, NULL },
     83 };
     84 #define QXL_DEBUGFS_ENTRIES ARRAY_SIZE(qxl_debugfs_list)
     85 #endif
     86 
     87 int
     88 qxl_debugfs_init(struct drm_minor *minor)
     89 {
     90 #if defined(CONFIG_DEBUG_FS)
     91 	int r;
     92 	struct qxl_device *dev =
     93 		(struct qxl_device *) minor->dev->dev_private;
     94 
     95 	drm_debugfs_create_files(qxl_debugfs_list, QXL_DEBUGFS_ENTRIES,
     96 				 minor->debugfs_root, minor);
     97 
     98 	r = qxl_ttm_debugfs_init(dev);
     99 	if (r) {
    100 		DRM_ERROR("Failed to init TTM debugfs\n");
    101 		return r;
    102 	}
    103 #endif
    104 	return 0;
    105 }
    106 
    107 int qxl_debugfs_add_files(struct qxl_device *qdev,
    108 			  struct drm_info_list *files,
    109 			  unsigned int nfiles)
    110 {
    111 	unsigned int i;
    112 
    113 	for (i = 0; i < qdev->debugfs_count; i++) {
    114 		if (qdev->debugfs[i].files == files) {
    115 			/* Already registered */
    116 			return 0;
    117 		}
    118 	}
    119 
    120 	i = qdev->debugfs_count + 1;
    121 	if (i > QXL_DEBUGFS_MAX_COMPONENTS) {
    122 		DRM_ERROR("Reached maximum number of debugfs components.\n");
    123 		DRM_ERROR("Report so we increase QXL_DEBUGFS_MAX_COMPONENTS.\n");
    124 		return -EINVAL;
    125 	}
    126 	qdev->debugfs[qdev->debugfs_count].files = files;
    127 	qdev->debugfs[qdev->debugfs_count].num_files = nfiles;
    128 	qdev->debugfs_count = i;
    129 #if defined(CONFIG_DEBUG_FS)
    130 	drm_debugfs_create_files(files, nfiles,
    131 				 qdev->ddev.primary->debugfs_root,
    132 				 qdev->ddev.primary);
    133 #endif
    134 	return 0;
    135 }
    136