/* * Copyright (C) 2009 Red Hat * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice (including the * next paragraph) shall be included in all copies or substantial * portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. * */ /* * Authors: * Ben Skeggs */ #include #include #include #include "nouveau_debugfs.h" #include "nouveau_drv.h" static int nouveau_debugfs_vbios_image(struct seq_file *m, void *data) { struct drm_info_node *node = (struct drm_info_node *) m->private; struct nouveau_drm *drm = nouveau_drm(node->minor->dev); int i; for (i = 0; i < drm->vbios.length; i++) seq_printf(m, "%c", drm->vbios.data[i]); return 0; } static int nouveau_debugfs_pstate_get(struct seq_file *m, void *data) { struct drm_device *drm = m->private; struct nouveau_debugfs *debugfs = nouveau_debugfs(drm); struct nvif_object *ctrl = &debugfs->ctrl; struct nvif_control_pstate_info_v0 info = {}; int ret, i; if (!debugfs) return -ENODEV; ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_INFO, &info, sizeof(info)); if (ret) return ret; for (i = 0; i < info.count + 1; i++) { const s32 state = i < info.count ? i : NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT; struct nvif_control_pstate_attr_v0 attr = { .state = state, .index = 0, }; ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR, &attr, sizeof(attr)); if (ret) return ret; if (i < info.count) seq_printf(m, "%02x:", attr.state); else seq_printf(m, "%s:", info.pwrsrc == 0 ? "DC" : info.pwrsrc == 1 ? "AC" : "--"); attr.index = 0; do { attr.state = state; ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR, &attr, sizeof(attr)); if (ret) return ret; seq_printf(m, " %s %d", attr.name, attr.min); if (attr.min != attr.max) seq_printf(m, "-%d", attr.max); seq_printf(m, " %s", attr.unit); } while (attr.index); if (state >= 0) { if (info.ustate_ac == state) seq_printf(m, " AC"); if (info.ustate_dc == state) seq_printf(m, " DC"); if (info.pstate == state) seq_printf(m, " *"); } else { if (info.ustate_ac < -1) seq_printf(m, " AC"); if (info.ustate_dc < -1) seq_printf(m, " DC"); } seq_printf(m, "\n"); } return 0; } static ssize_t nouveau_debugfs_pstate_set(struct file *file, const char __user *ubuf, size_t len, loff_t *offp) { struct seq_file *m = file->private_data; struct drm_device *drm = m->private; struct nouveau_debugfs *debugfs = nouveau_debugfs(drm); struct nvif_object *ctrl = &debugfs->ctrl; struct nvif_control_pstate_user_v0 args = { .pwrsrc = -EINVAL }; char buf[32] = {}, *tmp, *cur = buf; long value, ret; if (!debugfs) return -ENODEV; if (len >= sizeof(buf)) return -EINVAL; if (copy_from_user(buf, ubuf, len)) return -EFAULT; if ((tmp = strchr(buf, '\n'))) *tmp = '\0'; if (!strncasecmp(cur, "dc:", 3)) { args.pwrsrc = 0; cur += 3; } else if (!strncasecmp(cur, "ac:", 3)) { args.pwrsrc = 1; cur += 3; } if (!strcasecmp(cur, "none")) args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN; else if (!strcasecmp(cur, "auto")) args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON; else { ret = kstrtol(cur, 16, &value); if (ret) return ret; args.ustate = value; } ret = pm_runtime_get_sync(drm->dev); if (ret < 0 && ret != -EACCES) { pm_runtime_put_autosuspend(drm->dev); return ret; } ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args)); pm_runtime_put_autosuspend(drm->dev); if (ret < 0) return ret; return len; } static int nouveau_debugfs_pstate_open(struct inode *inode, struct file *file) { return single_open(file, nouveau_debugfs_pstate_get, inode->i_private); } static const struct file_operations nouveau_pstate_fops = { .owner = THIS_MODULE, .open = nouveau_debugfs_pstate_open, .read = seq_read, .write = nouveau_debugfs_pstate_set, }; static struct drm_info_list nouveau_debugfs_list[] = { { "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL }, }; #define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list) static const struct nouveau_debugfs_files { const char *name; const struct file_operations *fops; } nouveau_debugfs_files[] = { {"pstate", &nouveau_pstate_fops}, }; int nouveau_drm_debugfs_init(struct drm_minor *minor) { struct dentry *dentry; int i; for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) { dentry = debugfs_create_file(nouveau_debugfs_files[i].name, S_IRUGO | S_IWUSR, minor->debugfs_root, minor->dev, nouveau_debugfs_files[i].fops); if (!dentry) return -ENOMEM; } return drm_debugfs_create_files(nouveau_debugfs_list, NOUVEAU_DEBUGFS_ENTRIES, minor->debugfs_root, minor); } int nouveau_debugfs_init(struct nouveau_drm *drm) { int ret; drm->debugfs = kzalloc(sizeof(*drm->debugfs), GFP_KERNEL); if (!drm->debugfs) return -ENOMEM; ret = nvif_object_init(&drm->client.device.object, 0, NVIF_CLASS_CONTROL, NULL, 0, &drm->debugfs->ctrl); if (ret) return ret; return 0; } void nouveau_debugfs_fini(struct nouveau_drm *drm) { if (drm->debugfs && drm->debugfs->ctrl.priv) nvif_object_fini(&drm->debugfs->ctrl); kfree(drm->debugfs); drm->debugfs = NULL; }