blob: 1164aba118a184255bccef468c7d8028d40a0f2d [file] [log] [blame]
// SPDX-License-Identifier: GPL-2.0-only
/*
* Debugfs interface.
*
* Copyright (c) 2017-2019, Silicon Laboratories, Inc.
* Copyright (c) 2010, ST-Ericsson
*/
#include <linux/debugfs.h>
#include <linux/seq_file.h>
#include <linux/crc32.h>
#include "debug.h"
#include "wfx.h"
#include "sta.h"
#include "main.h"
#include "hif_tx.h"
#include "hif_tx_mib.h"
#define CREATE_TRACE_POINTS
#include "traces.h"
static const struct trace_print_flags hif_msg_print_map[] = {
hif_msg_list,
};
static const struct trace_print_flags hif_mib_print_map[] = {
hif_mib_list,
};
static const struct trace_print_flags wfx_reg_print_map[] = {
wfx_reg_list,
};
static const char *get_symbol(unsigned long val,
const struct trace_print_flags *symbol_array)
{
int i;
for (i = 0; symbol_array[i].mask != -1; i++) {
if (val == symbol_array[i].mask)
return symbol_array[i].name;
}
return "unknown";
}
const char *get_hif_name(unsigned long id)
{
return get_symbol(id, hif_msg_print_map);
}
const char *get_mib_name(unsigned long id)
{
return get_symbol(id, hif_mib_print_map);
}
const char *get_reg_name(unsigned long id)
{
return get_symbol(id, wfx_reg_print_map);
}
static int wfx_counters_show(struct seq_file *seq, void *v)
{
int ret;
struct wfx_dev *wdev = seq->private;
struct hif_mib_extended_count_table counters;
ret = hif_get_counters_table(wdev, &counters);
if (ret < 0)
return ret;
if (ret > 0)
return -EIO;
#define PUT_COUNTER(name) \
seq_printf(seq, "%24s %d\n", #name ":",\
le32_to_cpu(counters.count_##name))
PUT_COUNTER(tx_packets);
PUT_COUNTER(tx_multicast_frames);
PUT_COUNTER(tx_frames_success);
PUT_COUNTER(tx_frame_failures);
PUT_COUNTER(tx_frames_retried);
PUT_COUNTER(tx_frames_multi_retried);
PUT_COUNTER(rts_success);
PUT_COUNTER(rts_failures);
PUT_COUNTER(ack_failures);
PUT_COUNTER(rx_packets);
PUT_COUNTER(rx_frames_success);
PUT_COUNTER(rx_packet_errors);
PUT_COUNTER(plcp_errors);
PUT_COUNTER(fcs_errors);
PUT_COUNTER(rx_decryption_failures);
PUT_COUNTER(rx_mic_failures);
PUT_COUNTER(rx_no_key_failures);
PUT_COUNTER(rx_frame_duplicates);
PUT_COUNTER(rx_multicast_frames);
PUT_COUNTER(rx_cmacicv_errors);
PUT_COUNTER(rx_cmac_replays);
PUT_COUNTER(rx_mgmt_ccmp_replays);
PUT_COUNTER(rx_beacon);
PUT_COUNTER(miss_beacon);
#undef PUT_COUNTER
return 0;
}
DEFINE_SHOW_ATTRIBUTE(wfx_counters);
static const char * const channel_names[] = {
[0] = "1M",
[1] = "2M",
[2] = "5.5M",
[3] = "11M",
/* Entries 4 and 5 does not exist */
[6] = "6M",
[7] = "9M",
[8] = "12M",
[9] = "18M",
[10] = "24M",
[11] = "36M",
[12] = "48M",
[13] = "54M",
[14] = "MCS0",
[15] = "MCS1",
[16] = "MCS2",
[17] = "MCS3",
[18] = "MCS4",
[19] = "MCS5",
[20] = "MCS6",
[21] = "MCS7",
};
static int wfx_rx_stats_show(struct seq_file *seq, void *v)
{
struct wfx_dev *wdev = seq->private;
struct hif_rx_stats *st = &wdev->rx_stats;
int i;
mutex_lock(&wdev->rx_stats_lock);
seq_printf(seq, "Timestamp: %dus\n", st->date);
seq_printf(seq, "Low power clock: frequency %uHz, external %s\n",
st->pwr_clk_freq,
st->is_ext_pwr_clk ? "yes" : "no");
seq_printf(seq,
"Num. of frames: %d, PER (x10e4): %d, Throughput: %dKbps/s\n",
st->nb_rx_frame, st->per_total, st->throughput);
seq_puts(seq, " Num. of PER RSSI SNR CFO\n");
seq_puts(seq, " frames (x10e4) (dBm) (dB) (kHz)\n");
for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
if (channel_names[i])
seq_printf(seq, "%5s %8d %8d %8d %8d %8d\n",
channel_names[i], st->nb_rx_by_rate[i],
st->per[i], st->rssi[i] / 100,
st->snr[i] / 100, st->cfo[i]);
}
mutex_unlock(&wdev->rx_stats_lock);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(wfx_rx_stats);
static ssize_t wfx_send_pds_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct wfx_dev *wdev = file->private_data;
char *buf;
int ret;
if (*ppos != 0) {
dev_dbg(wdev->dev, "PDS data must be written in one transaction");
return -EBUSY;
}
buf = memdup_user(user_buf, count);
if (IS_ERR(buf))
return PTR_ERR(buf);
*ppos = *ppos + count;
ret = wfx_send_pds(wdev, buf, count);
kfree(buf);
if (ret < 0)
return ret;
return count;
}
static const struct file_operations wfx_send_pds_fops = {
.open = simple_open,
.write = wfx_send_pds_write,
};
static ssize_t wfx_burn_slk_key_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct wfx_dev *wdev = file->private_data;
dev_info(wdev->dev, "this driver does not support secure link\n");
return -EINVAL;
}
static const struct file_operations wfx_burn_slk_key_fops = {
.open = simple_open,
.write = wfx_burn_slk_key_write,
};
struct dbgfs_hif_msg {
struct wfx_dev *wdev;
struct completion complete;
u8 reply[1024];
int ret;
};
static ssize_t wfx_send_hif_msg_write(struct file *file,
const char __user *user_buf,
size_t count, loff_t *ppos)
{
struct dbgfs_hif_msg *context = file->private_data;
struct wfx_dev *wdev = context->wdev;
struct hif_msg *request;
if (completion_done(&context->complete)) {
dev_dbg(wdev->dev, "read previous result before start a new one\n");
return -EBUSY;
}
if (count < sizeof(struct hif_msg))
return -EINVAL;
// wfx_cmd_send() chekc that reply buffer is wide enough, but do not
// return precise length read. User have to know how many bytes should
// be read. Filling reply buffer with a memory pattern may help user.
memset(context->reply, 0xFF, sizeof(context->reply));
request = memdup_user(user_buf, count);
if (IS_ERR(request))
return PTR_ERR(request);
if (request->len != count) {
kfree(request);
return -EINVAL;
}
context->ret = wfx_cmd_send(wdev, request, context->reply,
sizeof(context->reply), false);
kfree(request);
complete(&context->complete);
return count;
}
static ssize_t wfx_send_hif_msg_read(struct file *file, char __user *user_buf,
size_t count, loff_t *ppos)
{
struct dbgfs_hif_msg *context = file->private_data;
int ret;
if (count > sizeof(context->reply))
return -EINVAL;
ret = wait_for_completion_interruptible(&context->complete);
if (ret)
return ret;
if (context->ret < 0)
return context->ret;
// Be carefull, write() is waiting for a full message while read()
// only return a payload
if (copy_to_user(user_buf, context->reply, count))
return -EFAULT;
return count;
}
static int wfx_send_hif_msg_open(struct inode *inode, struct file *file)
{
struct dbgfs_hif_msg *context = kzalloc(sizeof(*context), GFP_KERNEL);
if (!context)
return -ENOMEM;
context->wdev = inode->i_private;
init_completion(&context->complete);
file->private_data = context;
return 0;
}
static int wfx_send_hif_msg_release(struct inode *inode, struct file *file)
{
struct dbgfs_hif_msg *context = file->private_data;
kfree(context);
return 0;
}
static const struct file_operations wfx_send_hif_msg_fops = {
.open = wfx_send_hif_msg_open,
.release = wfx_send_hif_msg_release,
.write = wfx_send_hif_msg_write,
.read = wfx_send_hif_msg_read,
};
int wfx_debug_init(struct wfx_dev *wdev)
{
struct dentry *d;
d = debugfs_create_dir("wfx", wdev->hw->wiphy->debugfsdir);
debugfs_create_file("counters", 0444, d, wdev, &wfx_counters_fops);
debugfs_create_file("rx_stats", 0444, d, wdev, &wfx_rx_stats_fops);
debugfs_create_file("send_pds", 0200, d, wdev, &wfx_send_pds_fops);
debugfs_create_file("burn_slk_key", 0200, d, wdev,
&wfx_burn_slk_key_fops);
debugfs_create_file("send_hif_msg", 0600, d, wdev,
&wfx_send_hif_msg_fops);
return 0;
}