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/*
* Copyright (C) 2009 Red Hat <bskeggs@redhat.com>
*
* 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 <bskeggs@redhat.com>
*/
#include <linux/debugfs.h>
#include <nvif/class.h>
#include <nvif/if0001.h>
#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,
.release = single_release,
};
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;
}
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