diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_debugfs.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_debugfs.c | 46 |
1 files changed, 41 insertions, 5 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_debugfs.c b/drivers/gpu/drm/nouveau/nouveau_debugfs.c index 9109b69cd052..88a52f6b39fe 100644 --- a/drivers/gpu/drm/nouveau/nouveau_debugfs.c +++ b/drivers/gpu/drm/nouveau/nouveau_debugfs.c @@ -47,6 +47,26 @@ nouveau_debugfs_vbios_image(struct seq_file *m, void *data) } static int +nouveau_debugfs_strap_peek(struct seq_file *m, void *data) +{ + struct drm_info_node *node = m->private; + struct nouveau_drm *drm = nouveau_drm(node->minor->dev); + int ret; + + ret = pm_runtime_get_sync(drm->dev->dev); + if (ret < 0 && ret != -EACCES) + return ret; + + seq_printf(m, "0x%08x\n", + nvif_rd32(&drm->client.device.object, 0x101000)); + + pm_runtime_mark_last_busy(drm->dev->dev); + pm_runtime_put_autosuspend(drm->dev->dev); + + return 0; +} + +static int nouveau_debugfs_pstate_get(struct seq_file *m, void *data) { struct drm_device *drm = m->private; @@ -185,7 +205,8 @@ static const struct file_operations nouveau_pstate_fops = { }; static struct drm_info_list nouveau_debugfs_list[] = { - { "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL }, + { "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL }, + { "strap_peek", nouveau_debugfs_strap_peek, 0, NULL }, }; #define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list) @@ -199,8 +220,9 @@ static const struct nouveau_debugfs_files { int nouveau_drm_debugfs_init(struct drm_minor *minor) { + struct nouveau_drm *drm = nouveau_drm(minor->dev); struct dentry *dentry; - int i; + int i, ret; for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) { dentry = debugfs_create_file(nouveau_debugfs_files[i].name, @@ -211,9 +233,23 @@ nouveau_drm_debugfs_init(struct drm_minor *minor) return -ENOMEM; } - return drm_debugfs_create_files(nouveau_debugfs_list, - NOUVEAU_DEBUGFS_ENTRIES, - minor->debugfs_root, minor); + ret = drm_debugfs_create_files(nouveau_debugfs_list, + NOUVEAU_DEBUGFS_ENTRIES, + minor->debugfs_root, minor); + if (ret) + return ret; + + /* Set the size of the vbios since we know it, and it's confusing to + * userspace if it wants to seek() but the file has a length of 0 + */ + dentry = debugfs_lookup("vbios.rom", minor->debugfs_root); + if (!dentry) + return 0; + + d_inode(dentry)->i_size = drm->vbios.length; + dput(dentry); + + return 0; } int |