1 /* $NetBSD: virtgpu_debugfs.c,v 1.2 2018/08/27 04:58:37 riastradh 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 2018/08/27 04:58:37 riastradh 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