mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-18 12:16:49 +07:00
uwb: add the UWB stack (debug support)
Add various debugfs files, principaly for the reservation manager. Signed-off-by: David Vrabel <david.vrabel@csr.com>
This commit is contained in:
David Vrabel
David Vrabel
parent
8cc13a0947
commit
599e8d80a2
367
drivers/uwb/uwb-debug.c
Normal file
367
drivers/uwb/uwb-debug.c
Normal file
@ -0,0 +1,367 @@
|
||||
/*
|
||||
* Ultra Wide Band
|
||||
* Debug support
|
||||
*
|
||||
* Copyright (C) 2005-2006 Intel Corporation
|
||||
* Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU General Public License version
|
||||
* 2 as published by the Free Software Foundation.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
||||
* 02110-1301, USA.
|
||||
*
|
||||
*
|
||||
* FIXME: doc
|
||||
*/
|
||||
|
||||
#include <linux/spinlock.h>
|
||||
#include <linux/module.h>
|
||||
#include <linux/slab.h>
|
||||
#include <linux/notifier.h>
|
||||
#include <linux/device.h>
|
||||
#include <linux/debugfs.h>
|
||||
#include <linux/uaccess.h>
|
||||
#include <linux/seq_file.h>
|
||||
|
||||
#include <linux/uwb/debug-cmd.h>
|
||||
#define D_LOCAL 0
|
||||
#include <linux/uwb/debug.h>
|
||||
|
||||
#include "uwb-internal.h"
|
||||
|
||||
void dump_bytes(struct device *dev, const void *_buf, size_t rsize)
|
||||
{
|
||||
const char *buf = _buf;
|
||||
char line[32];
|
||||
size_t offset = 0;
|
||||
int cnt, cnt2;
|
||||
for (cnt = 0; cnt < rsize; cnt += 8) {
|
||||
size_t rtop = rsize - cnt < 8 ? rsize - cnt : 8;
|
||||
for (offset = cnt2 = 0; cnt2 < rtop; cnt2++) {
|
||||
offset += scnprintf(line + offset, sizeof(line) - offset,
|
||||
"%02x ", buf[cnt + cnt2] & 0xff);
|
||||
}
|
||||
if (dev)
|
||||
dev_info(dev, "%s\n", line);
|
||||
else
|
||||
printk(KERN_INFO "%s\n", line);
|
||||
}
|
||||
}
|
||||
EXPORT_SYMBOL_GPL(dump_bytes);
|
||||
|
||||
/*
|
||||
* Debug interface
|
||||
*
|
||||
* Per radio controller debugfs files (in uwb/uwbN/):
|
||||
*
|
||||
* command: Flexible command interface (see <linux/uwb/debug-cmd.h>).
|
||||
*
|
||||
* reservations: information on reservations.
|
||||
*
|
||||
* accept: Set to true (Y or 1) to accept reservation requests from
|
||||
* peers.
|
||||
*
|
||||
* drp_avail: DRP availability information.
|
||||
*/
|
||||
|
||||
struct uwb_dbg {
|
||||
struct uwb_pal pal;
|
||||
|
||||
u32 accept;
|
||||
struct list_head rsvs;
|
||||
|
||||
struct dentry *root_d;
|
||||
struct dentry *command_f;
|
||||
struct dentry *reservations_f;
|
||||
struct dentry *accept_f;
|
||||
struct dentry *drp_avail_f;
|
||||
};
|
||||
|
||||
static struct dentry *root_dir;
|
||||
|
||||
static void uwb_dbg_rsv_cb(struct uwb_rsv *rsv)
|
||||
{
|
||||
struct uwb_rc *rc = rsv->rc;
|
||||
struct device *dev = &rc->uwb_dev.dev;
|
||||
struct uwb_dev_addr devaddr;
|
||||
char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
|
||||
|
||||
uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
|
||||
if (rsv->target.type == UWB_RSV_TARGET_DEV)
|
||||
devaddr = rsv->target.dev->dev_addr;
|
||||
else
|
||||
devaddr = rsv->target.devaddr;
|
||||
uwb_dev_addr_print(target, sizeof(target), &devaddr);
|
||||
|
||||
dev_dbg(dev, "debug: rsv %s -> %s: %s\n",
|
||||
owner, target, uwb_rsv_state_str(rsv->state));
|
||||
}
|
||||
|
||||
static int cmd_rsv_establish(struct uwb_rc *rc,
|
||||
struct uwb_dbg_cmd_rsv_establish *cmd)
|
||||
{
|
||||
struct uwb_mac_addr macaddr;
|
||||
struct uwb_rsv *rsv;
|
||||
struct uwb_dev *target;
|
||||
int ret;
|
||||
|
||||
memcpy(&macaddr, cmd->target, sizeof(macaddr));
|
||||
target = uwb_dev_get_by_macaddr(rc, &macaddr);
|
||||
if (target == NULL)
|
||||
return -ENODEV;
|
||||
|
||||
rsv = uwb_rsv_create(rc, uwb_dbg_rsv_cb, NULL);
|
||||
if (rsv == NULL) {
|
||||
uwb_dev_put(target);
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
rsv->owner = &rc->uwb_dev;
|
||||
rsv->target.type = UWB_RSV_TARGET_DEV;
|
||||
rsv->target.dev = target;
|
||||
rsv->type = cmd->type;
|
||||
rsv->max_mas = cmd->max_mas;
|
||||
rsv->min_mas = cmd->min_mas;
|
||||
rsv->sparsity = cmd->sparsity;
|
||||
|
||||
ret = uwb_rsv_establish(rsv);
|
||||
if (ret)
|
||||
uwb_rsv_destroy(rsv);
|
||||
else
|
||||
list_add_tail(&rsv->pal_node, &rc->dbg->rsvs);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int cmd_rsv_terminate(struct uwb_rc *rc,
|
||||
struct uwb_dbg_cmd_rsv_terminate *cmd)
|
||||
{
|
||||
struct uwb_rsv *rsv, *found = NULL;
|
||||
int i = 0;
|
||||
|
||||
list_for_each_entry(rsv, &rc->dbg->rsvs, pal_node) {
|
||||
if (i == cmd->index) {
|
||||
found = rsv;
|
||||
break;
|
||||
}
|
||||
}
|
||||
if (!found)
|
||||
return -EINVAL;
|
||||
|
||||
list_del(&found->pal_node);
|
||||
uwb_rsv_terminate(found);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int command_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
file->private_data = inode->i_private;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static ssize_t command_write(struct file *file, const char __user *buf,
|
||||
size_t len, loff_t *off)
|
||||
{
|
||||
struct uwb_rc *rc = file->private_data;
|
||||
struct uwb_dbg_cmd cmd;
|
||||
int ret;
|
||||
|
||||
if (len != sizeof(struct uwb_dbg_cmd))
|
||||
return -EINVAL;
|
||||
|
||||
if (copy_from_user(&cmd, buf, len) != 0)
|
||||
return -EFAULT;
|
||||
|
||||
switch (cmd.type) {
|
||||
case UWB_DBG_CMD_RSV_ESTABLISH:
|
||||
ret = cmd_rsv_establish(rc, &cmd.rsv_establish);
|
||||
break;
|
||||
case UWB_DBG_CMD_RSV_TERMINATE:
|
||||
ret = cmd_rsv_terminate(rc, &cmd.rsv_terminate);
|
||||
break;
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
return ret < 0 ? ret : len;
|
||||
}
|
||||
|
||||
static struct file_operations command_fops = {
|
||||
.open = command_open,
|
||||
.write = command_write,
|
||||
.read = NULL,
|
||||
.llseek = no_llseek,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int reservations_print(struct seq_file *s, void *p)
|
||||
{
|
||||
struct uwb_rc *rc = s->private;
|
||||
struct uwb_rsv *rsv;
|
||||
|
||||
mutex_lock(&rc->rsvs_mutex);
|
||||
|
||||
list_for_each_entry(rsv, &rc->reservations, rc_node) {
|
||||
struct uwb_dev_addr devaddr;
|
||||
char owner[UWB_ADDR_STRSIZE], target[UWB_ADDR_STRSIZE];
|
||||
bool is_owner;
|
||||
char buf[72];
|
||||
|
||||
uwb_dev_addr_print(owner, sizeof(owner), &rsv->owner->dev_addr);
|
||||
if (rsv->target.type == UWB_RSV_TARGET_DEV) {
|
||||
devaddr = rsv->target.dev->dev_addr;
|
||||
is_owner = &rc->uwb_dev == rsv->owner;
|
||||
} else {
|
||||
devaddr = rsv->target.devaddr;
|
||||
is_owner = true;
|
||||
}
|
||||
uwb_dev_addr_print(target, sizeof(target), &devaddr);
|
||||
|
||||
seq_printf(s, "%c %s -> %s: %s\n",
|
||||
is_owner ? 'O' : 'T',
|
||||
owner, target, uwb_rsv_state_str(rsv->state));
|
||||
seq_printf(s, " stream: %d type: %s\n",
|
||||
rsv->stream, uwb_rsv_type_str(rsv->type));
|
||||
bitmap_scnprintf(buf, sizeof(buf), rsv->mas.bm, UWB_NUM_MAS);
|
||||
seq_printf(s, " %s\n", buf);
|
||||
}
|
||||
|
||||
mutex_unlock(&rc->rsvs_mutex);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int reservations_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, reservations_print, inode->i_private);
|
||||
}
|
||||
|
||||
static struct file_operations reservations_fops = {
|
||||
.open = reservations_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = single_release,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static int drp_avail_print(struct seq_file *s, void *p)
|
||||
{
|
||||
struct uwb_rc *rc = s->private;
|
||||
char buf[72];
|
||||
|
||||
bitmap_scnprintf(buf, sizeof(buf), rc->drp_avail.global, UWB_NUM_MAS);
|
||||
seq_printf(s, "global: %s\n", buf);
|
||||
bitmap_scnprintf(buf, sizeof(buf), rc->drp_avail.local, UWB_NUM_MAS);
|
||||
seq_printf(s, "local: %s\n", buf);
|
||||
bitmap_scnprintf(buf, sizeof(buf), rc->drp_avail.pending, UWB_NUM_MAS);
|
||||
seq_printf(s, "pending: %s\n", buf);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int drp_avail_open(struct inode *inode, struct file *file)
|
||||
{
|
||||
return single_open(file, drp_avail_print, inode->i_private);
|
||||
}
|
||||
|
||||
static struct file_operations drp_avail_fops = {
|
||||
.open = drp_avail_open,
|
||||
.read = seq_read,
|
||||
.llseek = seq_lseek,
|
||||
.release = single_release,
|
||||
.owner = THIS_MODULE,
|
||||
};
|
||||
|
||||
static void uwb_dbg_new_rsv(struct uwb_rsv *rsv)
|
||||
{
|
||||
struct uwb_rc *rc = rsv->rc;
|
||||
|
||||
if (rc->dbg->accept)
|
||||
uwb_rsv_accept(rsv, uwb_dbg_rsv_cb, NULL);
|
||||
}
|
||||
|
||||
/**
|
||||
* uwb_dbg_add_rc - add a debug interface for a radio controller
|
||||
* @rc: the radio controller
|
||||
*/
|
||||
void uwb_dbg_add_rc(struct uwb_rc *rc)
|
||||
{
|
||||
rc->dbg = kzalloc(sizeof(struct uwb_dbg), GFP_KERNEL);
|
||||
if (rc->dbg == NULL)
|
||||
return;
|
||||
|
||||
INIT_LIST_HEAD(&rc->dbg->rsvs);
|
||||
|
||||
uwb_pal_init(&rc->dbg->pal);
|
||||
rc->dbg->pal.new_rsv = uwb_dbg_new_rsv;
|
||||
uwb_pal_register(rc, &rc->dbg->pal);
|
||||
if (root_dir) {
|
||||
rc->dbg->root_d = debugfs_create_dir(dev_name(&rc->uwb_dev.dev),
|
||||
root_dir);
|
||||
rc->dbg->command_f = debugfs_create_file("command", 0200,
|
||||
rc->dbg->root_d, rc,
|
||||
&command_fops);
|
||||
rc->dbg->reservations_f = debugfs_create_file("reservations", 0444,
|
||||
rc->dbg->root_d, rc,
|
||||
&reservations_fops);
|
||||
rc->dbg->accept_f = debugfs_create_bool("accept", 0644,
|
||||
rc->dbg->root_d,
|
||||
&rc->dbg->accept);
|
||||
rc->dbg->drp_avail_f = debugfs_create_file("drp_avail", 0444,
|
||||
rc->dbg->root_d, rc,
|
||||
&drp_avail_fops);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* uwb_dbg_add_rc - remove a radio controller's debug interface
|
||||
* @rc: the radio controller
|
||||
*/
|
||||
void uwb_dbg_del_rc(struct uwb_rc *rc)
|
||||
{
|
||||
struct uwb_rsv *rsv, *t;
|
||||
|
||||
if (rc->dbg == NULL)
|
||||
return;
|
||||
|
||||
list_for_each_entry_safe(rsv, t, &rc->dbg->rsvs, pal_node) {
|
||||
uwb_rsv_destroy(rsv);
|
||||
}
|
||||
|
||||
uwb_pal_unregister(rc, &rc->dbg->pal);
|
||||
|
||||
if (root_dir) {
|
||||
debugfs_remove(rc->dbg->drp_avail_f);
|
||||
debugfs_remove(rc->dbg->accept_f);
|
||||
debugfs_remove(rc->dbg->reservations_f);
|
||||
debugfs_remove(rc->dbg->command_f);
|
||||
debugfs_remove(rc->dbg->root_d);
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* uwb_dbg_exit - initialize the debug interface sub-module
|
||||
*/
|
||||
void uwb_dbg_init(void)
|
||||
{
|
||||
root_dir = debugfs_create_dir("uwb", NULL);
|
||||
}
|
||||
|
||||
/**
|
||||
* uwb_dbg_exit - clean-up the debug interface sub-module
|
||||
*/
|
||||
void uwb_dbg_exit(void)
|
||||
{
|
||||
debugfs_remove(root_dir);
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user