276 lines
6.9 KiB
C
276 lines
6.9 KiB
C
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/*
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* Copyright (C) 2009 Red Hat <bskeggs@redhat.com>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice (including the
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* next paragraph) shall be included in all copies or substantial
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* portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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/*
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* Authors:
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* Ben Skeggs <bskeggs@redhat.com>
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*/
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#include <linux/debugfs.h>
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#include <nvif/class.h>
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#include <nvif/if0001.h>
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#include "nouveau_debugfs.h"
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#include "nouveau_drv.h"
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static int
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nouveau_debugfs_vbios_image(struct seq_file *m, void *data)
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{
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struct drm_info_node *node = (struct drm_info_node *) m->private;
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struct nouveau_drm *drm = nouveau_drm(node->minor->dev);
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int i;
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for (i = 0; i < drm->vbios.length; i++)
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seq_printf(m, "%c", drm->vbios.data[i]);
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return 0;
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}
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static int
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nouveau_debugfs_strap_peek(struct seq_file *m, void *data)
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{
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struct drm_info_node *node = m->private;
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struct nouveau_drm *drm = nouveau_drm(node->minor->dev);
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int ret;
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ret = pm_runtime_get_sync(drm->dev->dev);
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if (ret < 0 && ret != -EACCES) {
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pm_runtime_put_autosuspend(drm->dev->dev);
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return ret;
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}
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seq_printf(m, "0x%08x\n",
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nvif_rd32(&drm->client.device.object, 0x101000));
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pm_runtime_mark_last_busy(drm->dev->dev);
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pm_runtime_put_autosuspend(drm->dev->dev);
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return 0;
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}
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static int
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nouveau_debugfs_pstate_get(struct seq_file *m, void *data)
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{
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struct drm_device *drm = m->private;
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struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
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struct nvif_object *ctrl = &debugfs->ctrl;
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struct nvif_control_pstate_info_v0 info = {};
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int ret, i;
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if (!debugfs)
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return -ENODEV;
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ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_INFO, &info, sizeof(info));
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if (ret)
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return ret;
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for (i = 0; i < info.count + 1; i++) {
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const s32 state = i < info.count ? i :
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NVIF_CONTROL_PSTATE_ATTR_V0_STATE_CURRENT;
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struct nvif_control_pstate_attr_v0 attr = {
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.state = state,
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.index = 0,
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};
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ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR,
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&attr, sizeof(attr));
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if (ret)
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return ret;
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if (i < info.count)
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seq_printf(m, "%02x:", attr.state);
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else
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seq_printf(m, "%s:", info.pwrsrc == 0 ? "DC" :
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info.pwrsrc == 1 ? "AC" : "--");
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attr.index = 0;
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do {
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attr.state = state;
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ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_ATTR,
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&attr, sizeof(attr));
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if (ret)
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return ret;
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seq_printf(m, " %s %d", attr.name, attr.min);
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if (attr.min != attr.max)
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seq_printf(m, "-%d", attr.max);
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seq_printf(m, " %s", attr.unit);
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} while (attr.index);
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if (state >= 0) {
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if (info.ustate_ac == state)
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seq_printf(m, " AC");
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if (info.ustate_dc == state)
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seq_printf(m, " DC");
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if (info.pstate == state)
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seq_printf(m, " *");
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} else {
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if (info.ustate_ac < -1)
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seq_printf(m, " AC");
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if (info.ustate_dc < -1)
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seq_printf(m, " DC");
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}
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seq_printf(m, "\n");
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}
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return 0;
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}
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static ssize_t
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nouveau_debugfs_pstate_set(struct file *file, const char __user *ubuf,
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size_t len, loff_t *offp)
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{
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struct seq_file *m = file->private_data;
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struct drm_device *drm = m->private;
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struct nouveau_debugfs *debugfs = nouveau_debugfs(drm);
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struct nvif_object *ctrl = &debugfs->ctrl;
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struct nvif_control_pstate_user_v0 args = { .pwrsrc = -EINVAL };
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char buf[32] = {}, *tmp, *cur = buf;
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long value, ret;
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if (!debugfs)
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return -ENODEV;
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if (len >= sizeof(buf))
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return -EINVAL;
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if (copy_from_user(buf, ubuf, len))
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return -EFAULT;
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if ((tmp = strchr(buf, '\n')))
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*tmp = '\0';
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if (!strncasecmp(cur, "dc:", 3)) {
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args.pwrsrc = 0;
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cur += 3;
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} else
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if (!strncasecmp(cur, "ac:", 3)) {
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args.pwrsrc = 1;
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cur += 3;
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}
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if (!strcasecmp(cur, "none"))
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args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_UNKNOWN;
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else
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if (!strcasecmp(cur, "auto"))
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args.ustate = NVIF_CONTROL_PSTATE_USER_V0_STATE_PERFMON;
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else {
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ret = kstrtol(cur, 16, &value);
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if (ret)
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return ret;
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args.ustate = value;
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}
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ret = pm_runtime_get_sync(drm->dev);
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if (ret < 0 && ret != -EACCES) {
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pm_runtime_put_autosuspend(drm->dev);
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return ret;
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}
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ret = nvif_mthd(ctrl, NVIF_CONTROL_PSTATE_USER, &args, sizeof(args));
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pm_runtime_put_autosuspend(drm->dev);
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if (ret < 0)
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return ret;
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return len;
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}
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static int
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nouveau_debugfs_pstate_open(struct inode *inode, struct file *file)
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{
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return single_open(file, nouveau_debugfs_pstate_get, inode->i_private);
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}
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static const struct file_operations nouveau_pstate_fops = {
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.owner = THIS_MODULE,
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.open = nouveau_debugfs_pstate_open,
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.read = seq_read,
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.write = nouveau_debugfs_pstate_set,
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.release = single_release,
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};
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static struct drm_info_list nouveau_debugfs_list[] = {
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{ "vbios.rom", nouveau_debugfs_vbios_image, 0, NULL },
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{ "strap_peek", nouveau_debugfs_strap_peek, 0, NULL },
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};
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#define NOUVEAU_DEBUGFS_ENTRIES ARRAY_SIZE(nouveau_debugfs_list)
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static const struct nouveau_debugfs_files {
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const char *name;
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const struct file_operations *fops;
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} nouveau_debugfs_files[] = {
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{"pstate", &nouveau_pstate_fops},
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};
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void
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nouveau_drm_debugfs_init(struct drm_minor *minor)
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{
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struct nouveau_drm *drm = nouveau_drm(minor->dev);
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struct dentry *dentry;
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int i;
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for (i = 0; i < ARRAY_SIZE(nouveau_debugfs_files); i++) {
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debugfs_create_file(nouveau_debugfs_files[i].name,
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S_IRUGO | S_IWUSR,
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minor->debugfs_root, minor->dev,
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nouveau_debugfs_files[i].fops);
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}
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drm_debugfs_create_files(nouveau_debugfs_list,
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NOUVEAU_DEBUGFS_ENTRIES,
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minor->debugfs_root, minor);
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/* Set the size of the vbios since we know it, and it's confusing to
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* userspace if it wants to seek() but the file has a length of 0
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*/
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dentry = debugfs_lookup("vbios.rom", minor->debugfs_root);
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if (!dentry)
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return;
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d_inode(dentry)->i_size = drm->vbios.length;
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dput(dentry);
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}
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int
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nouveau_debugfs_init(struct nouveau_drm *drm)
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{
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drm->debugfs = kzalloc(sizeof(*drm->debugfs), GFP_KERNEL);
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if (!drm->debugfs)
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return -ENOMEM;
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return nvif_object_ctor(&drm->client.device.object, "debugfsCtrl", 0,
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NVIF_CLASS_CONTROL, NULL, 0,
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&drm->debugfs->ctrl);
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}
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void
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nouveau_debugfs_fini(struct nouveau_drm *drm)
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{
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if (drm->debugfs && drm->debugfs->ctrl.priv)
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nvif_object_dtor(&drm->debugfs->ctrl);
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kfree(drm->debugfs);
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drm->debugfs = NULL;
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}
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