linuxdebug/drivers/net/wireless/silabs/wfx/debug.c

332 lines
8.6 KiB
C

// SPDX-License-Identifier: GPL-2.0-only
/*
* Debugfs interface.
*
* Copyright (c) 2017-2020, 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 *wfx_get_hif_name(unsigned long id)
{
return get_symbol(id, hif_msg_print_map);
}
const char *wfx_get_mib_name(unsigned long id)
{
return get_symbol(id, hif_mib_print_map);
}
const char *wfx_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, i;
struct wfx_dev *wdev = seq->private;
struct wfx_hif_mib_extended_count_table counters[3];
for (i = 0; i < ARRAY_SIZE(counters); i++) {
ret = wfx_hif_get_counters_table(wdev, i, counters + i);
if (ret < 0)
return ret;
if (ret > 0)
return -EIO;
}
seq_printf(seq, "%-24s %12s %12s %12s\n", "", "global", "iface 0", "iface 1");
#define PUT_COUNTER(name) \
seq_printf(seq, "%-24s %12d %12d %12d\n", #name, \
le32_to_cpu(counters[2].count_##name), \
le32_to_cpu(counters[0].count_##name), \
le32_to_cpu(counters[1].count_##name))
PUT_COUNTER(tx_frames);
PUT_COUNTER(tx_frames_multicast);
PUT_COUNTER(tx_frames_success);
PUT_COUNTER(tx_frames_retried);
PUT_COUNTER(tx_frames_multi_retried);
PUT_COUNTER(tx_frames_failed);
PUT_COUNTER(ack_failed);
PUT_COUNTER(rts_success);
PUT_COUNTER(rts_failed);
PUT_COUNTER(rx_frames);
PUT_COUNTER(rx_frames_multicast);
PUT_COUNTER(rx_frames_success);
PUT_COUNTER(rx_frames_failed);
PUT_COUNTER(drop_plcp);
PUT_COUNTER(drop_fcs);
PUT_COUNTER(drop_no_key);
PUT_COUNTER(drop_decryption);
PUT_COUNTER(drop_tkip_mic);
PUT_COUNTER(drop_bip_mic);
PUT_COUNTER(drop_cmac_icv);
PUT_COUNTER(drop_cmac_replay);
PUT_COUNTER(drop_ccmp_replay);
PUT_COUNTER(drop_duplicate);
PUT_COUNTER(rx_bcn_miss);
PUT_COUNTER(rx_bcn_success);
PUT_COUNTER(rx_bcn_dtim);
PUT_COUNTER(rx_bcn_dtim_aid0_clr);
PUT_COUNTER(rx_bcn_dtim_aid0_set);
#undef PUT_COUNTER
for (i = 0; i < ARRAY_SIZE(counters[0].reserved); i++)
seq_printf(seq, "reserved[%02d]%12s %12d %12d %12d\n", i, "",
le32_to_cpu(counters[2].reserved[i]),
le32_to_cpu(counters[0].reserved[i]),
le32_to_cpu(counters[1].reserved[i]));
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 wfx_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",
le32_to_cpu(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],
le32_to_cpu(st->nb_rx_by_rate[i]),
le16_to_cpu(st->per[i]),
(s16)le16_to_cpu(st->rssi[i]) / 100,
(s16)le16_to_cpu(st->snr[i]) / 100,
(s16)le16_to_cpu(st->cfo[i]));
}
mutex_unlock(&wdev->rx_stats_lock);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(wfx_rx_stats);
static int wfx_tx_power_loop_show(struct seq_file *seq, void *v)
{
struct wfx_dev *wdev = seq->private;
struct wfx_hif_tx_power_loop_info *st = &wdev->tx_power_loop_info;
int tmp;
mutex_lock(&wdev->tx_power_loop_info_lock);
tmp = le16_to_cpu(st->tx_gain_dig);
seq_printf(seq, "Tx gain digital: %d\n", tmp);
tmp = le16_to_cpu(st->tx_gain_pa);
seq_printf(seq, "Tx gain PA: %d\n", tmp);
tmp = (s16)le16_to_cpu(st->target_pout);
seq_printf(seq, "Target Pout: %d.%02d dBm\n", tmp / 4, (tmp % 4) * 25);
tmp = (s16)le16_to_cpu(st->p_estimation);
seq_printf(seq, "FEM Pout: %d.%02d dBm\n", tmp / 4, (tmp % 4) * 25);
tmp = le16_to_cpu(st->vpdet);
seq_printf(seq, "Vpdet: %d mV\n", tmp);
seq_printf(seq, "Measure index: %d\n", st->measurement_index);
mutex_unlock(&wdev->tx_power_loop_info_lock);
return 0;
}
DEFINE_SHOW_ATTRIBUTE(wfx_tx_power_loop);
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,
};
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 wfx_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 wfx_hif_msg))
return -EINVAL;
/* wfx_cmd_send() checks that reply buffer is wide enough, but does 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 (le16_to_cpu(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 careful, write() is waiting for a full message while read() only returns 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("tx_power_loop", 0444, d, wdev, &wfx_tx_power_loop_fops);
debugfs_create_file("send_pds", 0200, d, wdev, &wfx_send_pds_fops);
debugfs_create_file("send_hif_msg", 0600, d, wdev, &wfx_send_hif_msg_fops);
return 0;
}