LXR linux/drivers/gpu/drm/virtio/virtgpu

   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 <drm/drm_debugfs.h>
  27#include <drm/drm_file.h>
  28
  29#include "virtgpu_drv.h"
  30
  31static void virtio_gpu_add_bool(struct seq_file *m, const char *name,
  32                                bool value)
  33{
  34        seq_printf(m, "%-16s : %s\n", name, value ? "yes" : "no");
  35}
  36
  37static void virtio_gpu_add_int(struct seq_file *m, const char *name, int value)
  38{
  39        seq_printf(m, "%-16s : %d\n", name, value);
  40}
  41
  42static int virtio_gpu_features(struct seq_file *m, void *data)
  43{
  44        struct drm_info_node *node = (struct drm_info_node *)m->private;
  45        struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
  46
  47        virtio_gpu_add_bool(m, "virgl", vgdev->has_virgl_3d);
  48        virtio_gpu_add_bool(m, "edid", vgdev->has_edid);
  49        virtio_gpu_add_bool(m, "indirect", vgdev->has_indirect);
  50
  51        virtio_gpu_add_bool(m, "resource uuid",
  52                            vgdev->has_resource_assign_uuid);
  53
  54        virtio_gpu_add_bool(m, "blob resources", vgdev->has_resource_blob);
  55        virtio_gpu_add_int(m, "cap sets", vgdev->num_capsets);
  56        virtio_gpu_add_int(m, "scanouts", vgdev->num_scanouts);
  57        if (vgdev->host_visible_region.len) {
  58                seq_printf(m, "%-16s : 0x%lx +0x%lx\n", "host visible region",
  59                           (unsigned long)vgdev->host_visible_region.addr,
  60                           (unsigned long)vgdev->host_visible_region.len);
  61        }
  62        return 0;
  63}
  64
  65static int
  66virtio_gpu_debugfs_irq_info(struct seq_file *m, void *data)
  67{
  68        struct drm_info_node *node = (struct drm_info_node *) m->private;
  69        struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
  70
  71        seq_printf(m, "fence %llu %lld\n",
  72                   (u64)atomic64_read(&vgdev->fence_drv.last_fence_id),
  73                   vgdev->fence_drv.current_fence_id);
  74        return 0;
  75}
  76
  77static int
  78virtio_gpu_debugfs_host_visible_mm(struct seq_file *m, void *data)
  79{
  80        struct drm_info_node *node = (struct drm_info_node *)m->private;
  81        struct virtio_gpu_device *vgdev = node->minor->dev->dev_private;
  82        struct drm_printer p;
  83
  84        if (!vgdev->has_host_visible) {
  85                seq_puts(m, "Host allocations not visible to guest\n");
  86                return 0;
  87        }
  88
  89        p = drm_seq_file_printer(m);
  90        drm_mm_print(&vgdev->host_visible_mm, &p);
  91        return 0;
  92}
  93
  94static struct drm_info_list virtio_gpu_debugfs_list[] = {
  95        { "virtio-gpu-features", virtio_gpu_features },
  96        { "virtio-gpu-irq-fence", virtio_gpu_debugfs_irq_info, 0, NULL },
  97        { "virtio-gpu-host-visible-mm", virtio_gpu_debugfs_host_visible_mm },
  98};
  99
 100#define VIRTIO_GPU_DEBUGFS_ENTRIES ARRAY_SIZE(virtio_gpu_debugfs_list)
 101
 102void
 103virtio_gpu_debugfs_init(struct drm_minor *minor)
 104{
 105        drm_debugfs_create_files(virtio_gpu_debugfs_list,
 106                                 VIRTIO_GPU_DEBUGFS_ENTRIES,
 107                                 minor->debugfs_root, minor);
 108}
 109