virtgpu_debugfs.c

  1/*
  2 * Copyright (C) 2015 Red Hat, Inc.
  3 * All Rights Reserved.
  4 *
  5 * Permission is hereby granted, free of charge, to any person obtaining
  6 * a copy of this software and associated documentation files (the
  7 * "Software"), to deal in the Software without restriction, including
  8 * without limitation the rights to use, copy, modify, merge, publish,
  9 * distribute, sublicense, and/or sell copies of the Software, and to
 10 * permit persons to whom the Software is furnished to do so, subject to
 11 * the following conditions:
 12 *
 13 * The above copyright notice and this permission notice (including the
 14 * next paragraph) shall be included in all copies or substantial
 15 * portions of the Software.
 16 *
 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 20 * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
 21 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 22 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 23 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 24 */
 25
 26#include <linux/string_helpers.h>
 27
 28#include <drm/drm_debugfs.h>
 29#include <drm/drm_file.h>
 30#include <drm/drm_print.h>
 31
 32#include "virtgpu_drv.h"
 33
 34static void virtio_gpu_add_bool(struct seq_file *m, const char *name,
 35				bool value)
 36{
 37	seq_printf(m, "%-16s : %s\n", name, str_yes_no(value));
 38}
 39
 40static void virtio_gpu_add_int(struct seq_file *m, const char *name, int value)
 41{
 42	seq_printf(m, "%-16s : %d\n", name, value);
 43}
 44
 45static int virtio_gpu_features(struct seq_file *m, void *data)
 46{
 47	struct drm_info_node *node = (struct drm_info_node *)m->private;
 48	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
 49
 50	virtio_gpu_add_bool(m, "virgl", vgdev->has_virgl_3d);
 51	virtio_gpu_add_bool(m, "edid", vgdev->has_edid);
 52	virtio_gpu_add_bool(m, "indirect", vgdev->has_indirect);
 53
 54	virtio_gpu_add_bool(m, "resource uuid",
 55			    vgdev->has_resource_assign_uuid);
 56
 57	virtio_gpu_add_bool(m, "blob resources", vgdev->has_resource_blob);
 58	virtio_gpu_add_bool(m, "context init", vgdev->has_context_init);
 59	virtio_gpu_add_int(m, "cap sets", vgdev->num_capsets);
 60	virtio_gpu_add_int(m, "scanouts", vgdev->num_scanouts);
 61	if (vgdev->host_visible_region.len) {
 62		seq_printf(m, "%-16s : 0x%lx +0x%lx\n", "host visible region",
 63			   (unsigned long)vgdev->host_visible_region.addr,
 64			   (unsigned long)vgdev->host_visible_region.len);
 65	}
 66	return 0;
 67}
 68
 69static int
 70virtio_gpu_debugfs_irq_info(struct seq_file *m, void *data)
 71{
 72	struct drm_info_node *node = (struct drm_info_node *) m->private;
 73	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
 74
 75	seq_printf(m, "fence %llu %lld\n",
 76		   (u64)atomic64_read(&vgdev->fence_drv.last_fence_id),
 77		   vgdev->fence_drv.current_fence_id);
 78	return 0;
 79}
 80
 81static int
 82virtio_gpu_debugfs_host_visible_mm(struct seq_file *m, void *data)
 83{
 84	struct drm_info_node *node = (struct drm_info_node *)m->private;
 85	struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
 86	struct drm_printer p;
 87
 88	if (!vgdev->has_host_visible) {
 89		seq_puts(m, "Host allocations not visible to guest\n");
 90		return 0;
 91	}
 92
 93	p = drm_seq_file_printer(m);
 94	drm_mm_print(&vgdev->host_visible_mm, &p);
 95	return 0;
 96}
 97
 98static struct drm_info_list virtio_gpu_debugfs_list[] = {
 99	{ "virtio-gpu-features", virtio_gpu_features },
100	{ "virtio-gpu-irq-fence", virtio_gpu_debugfs_irq_info, 0, NULL },
101	{ "virtio-gpu-host-visible-mm", virtio_gpu_debugfs_host_visible_mm },
102};
103
104#define VIRTIO_GPU_DEBUGFS_ENTRIES ARRAY_SIZE(virtio_gpu_debugfs_list)
105
106void
107virtio_gpu_debugfs_init(struct drm_minor *minor)
108{
109	drm_debugfs_create_files(virtio_gpu_debugfs_list,
110				 VIRTIO_GPU_DEBUGFS_ENTRIES,
111				 minor->debugfs_root, minor);
112}