// SPDX-License-Identifier: GPL-2.0
|
/*
|
* Copyright (c) 2012-2016, Intel Corporation. All rights reserved
|
* Intel Management Engine Interface (Intel MEI) Linux driver
|
*/
|
|
#include <linux/slab.h>
|
#include <linux/kernel.h>
|
#include <linux/device.h>
|
#include <linux/debugfs.h>
|
#include <linux/seq_file.h>
|
|
#include <linux/mei.h>
|
|
#include "mei_dev.h"
|
#include "client.h"
|
#include "hw.h"
|
|
static int mei_dbgfs_meclients_show(struct seq_file *m, void *unused)
|
{
|
struct mei_device *dev = m->private;
|
struct mei_me_client *me_cl;
|
int i = 0;
|
|
if (!dev)
|
return -ENODEV;
|
|
down_read(&dev->me_clients_rwsem);
|
|
seq_puts(m, " |id|fix| UUID |con|msg len|sb|refc|vt|\n");
|
|
/* if the driver is not enabled the list won't be consistent */
|
if (dev->dev_state != MEI_DEV_ENABLED)
|
goto out;
|
|
list_for_each_entry(me_cl, &dev->me_clients, list) {
|
if (!mei_me_cl_get(me_cl))
|
continue;
|
|
seq_printf(m, "%2d|%2d|%3d|%pUl|%3d|%7d|%2d|%4d|%2d|\n",
|
i++, me_cl->client_id,
|
me_cl->props.fixed_address,
|
&me_cl->props.protocol_name,
|
me_cl->props.max_number_of_connections,
|
me_cl->props.max_msg_length,
|
me_cl->props.single_recv_buf,
|
kref_read(&me_cl->refcnt),
|
me_cl->props.vt_supported);
|
mei_me_cl_put(me_cl);
|
}
|
|
out:
|
up_read(&dev->me_clients_rwsem);
|
return 0;
|
}
|
DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_meclients);
|
|
static int mei_dbgfs_active_show(struct seq_file *m, void *unused)
|
{
|
struct mei_device *dev = m->private;
|
struct mei_cl *cl;
|
int i = 0;
|
|
if (!dev)
|
return -ENODEV;
|
|
mutex_lock(&dev->device_lock);
|
|
seq_puts(m, " |me|host|state|rd|wr|wrq\n");
|
|
/* if the driver is not enabled the list won't be consistent */
|
if (dev->dev_state != MEI_DEV_ENABLED)
|
goto out;
|
|
list_for_each_entry(cl, &dev->file_list, link) {
|
|
seq_printf(m, "%3d|%2d|%4d|%5d|%2d|%2d|%3u\n",
|
i, mei_cl_me_id(cl), cl->host_client_id, cl->state,
|
!list_empty(&cl->rd_completed), cl->writing_state,
|
cl->tx_cb_queued);
|
i++;
|
}
|
out:
|
mutex_unlock(&dev->device_lock);
|
return 0;
|
}
|
DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_active);
|
|
static int mei_dbgfs_devstate_show(struct seq_file *m, void *unused)
|
{
|
struct mei_device *dev = m->private;
|
|
seq_printf(m, "dev: %s\n", mei_dev_state_str(dev->dev_state));
|
seq_printf(m, "hbm: %s\n", mei_hbm_state_str(dev->hbm_state));
|
|
if (dev->hbm_state >= MEI_HBM_ENUM_CLIENTS &&
|
dev->hbm_state <= MEI_HBM_STARTED) {
|
seq_puts(m, "hbm features:\n");
|
seq_printf(m, "\tPG: %01d\n", dev->hbm_f_pg_supported);
|
seq_printf(m, "\tDC: %01d\n", dev->hbm_f_dc_supported);
|
seq_printf(m, "\tIE: %01d\n", dev->hbm_f_ie_supported);
|
seq_printf(m, "\tDOT: %01d\n", dev->hbm_f_dot_supported);
|
seq_printf(m, "\tEV: %01d\n", dev->hbm_f_ev_supported);
|
seq_printf(m, "\tFA: %01d\n", dev->hbm_f_fa_supported);
|
seq_printf(m, "\tOS: %01d\n", dev->hbm_f_os_supported);
|
seq_printf(m, "\tDR: %01d\n", dev->hbm_f_dr_supported);
|
seq_printf(m, "\tVT: %01d\n", dev->hbm_f_vt_supported);
|
seq_printf(m, "\tCAP: %01d\n", dev->hbm_f_cap_supported);
|
}
|
|
seq_printf(m, "pg: %s, %s\n",
|
mei_pg_is_enabled(dev) ? "ENABLED" : "DISABLED",
|
mei_pg_state_str(mei_pg_state(dev)));
|
return 0;
|
}
|
DEFINE_SHOW_ATTRIBUTE(mei_dbgfs_devstate);
|
|
static ssize_t mei_dbgfs_write_allow_fa(struct file *file,
|
const char __user *user_buf,
|
size_t count, loff_t *ppos)
|
{
|
struct mei_device *dev;
|
int ret;
|
|
dev = container_of(file->private_data,
|
struct mei_device, allow_fixed_address);
|
|
ret = debugfs_write_file_bool(file, user_buf, count, ppos);
|
if (ret < 0)
|
return ret;
|
dev->override_fixed_address = true;
|
return ret;
|
}
|
|
static const struct file_operations mei_dbgfs_allow_fa_fops = {
|
.open = simple_open,
|
.read = debugfs_read_file_bool,
|
.write = mei_dbgfs_write_allow_fa,
|
.llseek = generic_file_llseek,
|
};
|
|
/**
|
* mei_dbgfs_deregister - Remove the debugfs files and directories
|
*
|
* @dev: the mei device structure
|
*/
|
void mei_dbgfs_deregister(struct mei_device *dev)
|
{
|
if (!dev->dbgfs_dir)
|
return;
|
debugfs_remove_recursive(dev->dbgfs_dir);
|
dev->dbgfs_dir = NULL;
|
}
|
|
/**
|
* mei_dbgfs_register - Add the debugfs files
|
*
|
* @dev: the mei device structure
|
* @name: the mei device name
|
*/
|
void mei_dbgfs_register(struct mei_device *dev, const char *name)
|
{
|
struct dentry *dir;
|
|
dir = debugfs_create_dir(name, NULL);
|
dev->dbgfs_dir = dir;
|
|
debugfs_create_file("meclients", S_IRUSR, dir, dev,
|
&mei_dbgfs_meclients_fops);
|
debugfs_create_file("active", S_IRUSR, dir, dev,
|
&mei_dbgfs_active_fops);
|
debugfs_create_file("devstate", S_IRUSR, dir, dev,
|
&mei_dbgfs_devstate_fops);
|
debugfs_create_file("allow_fixed_address", S_IRUSR | S_IWUSR, dir,
|
&dev->allow_fixed_address,
|
&mei_dbgfs_allow_fa_fops);
|
}
|
