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virtgpu_debugfs.c revision 1.2.6.2 
      1 /*	$NetBSD: virtgpu_debugfs.c,v 1.2.6.2 2019/06/10 22:08:28 christos Exp $	*/
      2 
      3 /*
      4  * Copyright (C) 2015 Red Hat, Inc.
      5  * All Rights Reserved.
      6  *
      7  * Permission is hereby granted, free of charge, to any person obtaining
      8  * a copy of this software and associated documentation files (the
      9  * "Software"), to deal in the Software without restriction, including
     10  * without limitation the rights to use, copy, modify, merge, publish,
     11  * distribute, sublicense, and/or sell copies of the Software, and to
     12  * permit persons to whom the Software is furnished to do so, subject to
     13  * the following conditions:
     14  *
     15  * The above copyright notice and this permission notice (including the
     16  * next paragraph) shall be included in all copies or substantial
     17  * portions of the Software.
     18  *
     19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
     20  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
     21  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
     22  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
     23  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
     24  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
     25  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
     26  */
     27 
     28 #include <sys/cdefs.h>
     29 __KERNEL_RCSID(0, "$NetBSD: virtgpu_debugfs.c,v 1.2.6.2 2019/06/10 22:08:28 christos Exp $");
     30 
     31 #include <linux/debugfs.h>
     32 
     33 #include "drmP.h"
     34 #include "virtgpu_drv.h"
     35 
     36 static int
     37 virtio_gpu_debugfs_irq_info(struct seq_file *m, void *data)
     38 {
     39 	struct drm_info_node *node = (struct drm_info_node *) m->private;
     40 	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
     41 
     42 	seq_printf(m, "fence %llu %lld\n",
     43 		   (u64)atomic64_read(&vgdev->fence_drv.last_seq),
     44 		   vgdev->fence_drv.sync_seq);
     45 	return 0;
     46 }
     47 
     48 static struct drm_info_list virtio_gpu_debugfs_list[] = {
     49 	{ "irq_fence", virtio_gpu_debugfs_irq_info, 0, NULL },
     50 };
     51 
     52 #define VIRTIO_GPU_DEBUGFS_ENTRIES ARRAY_SIZE(virtio_gpu_debugfs_list)
     53 
     54 int
     55 virtio_gpu_debugfs_init(struct drm_minor *minor)
     56 {
     57 	drm_debugfs_create_files(virtio_gpu_debugfs_list,
     58 				 VIRTIO_GPU_DEBUGFS_ENTRIES,
     59 				 minor->debugfs_root, minor);
     60 	return 0;
     61 }
     62 
     63 void
     64 virtio_gpu_debugfs_takedown(struct drm_minor *minor)
     65 {
     66 	drm_debugfs_remove_files(virtio_gpu_debugfs_list,
     67 				 VIRTIO_GPU_DEBUGFS_ENTRIES,
     68 				 minor);
     69 }
     70