| /* |
| * This file is part of wl1271 |
| * |
| * Copyright (C) 2009 Nokia Corporation |
| * |
| * Contact: Luciano Coelho <luciano.coelho@nokia.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 St, Fifth Floor, Boston, MA |
| * 02110-1301 USA |
| * |
| */ |
| |
| #include "debugfs.h" |
| |
| #include <linux/skbuff.h> |
| #include <linux/slab.h> |
| |
| #include "wl12xx.h" |
| #include "acx.h" |
| #include "ps.h" |
| #include "io.h" |
| |
| /* ms */ |
| #define WL1271_DEBUGFS_STATS_LIFETIME 1000 |
| |
| /* debugfs macros idea from mac80211 */ |
| #define DEBUGFS_FORMAT_BUFFER_SIZE 100 |
| static int wl1271_format_buffer(char __user *userbuf, size_t count, |
| loff_t *ppos, char *fmt, ...) |
| { |
| va_list args; |
| char buf[DEBUGFS_FORMAT_BUFFER_SIZE]; |
| int res; |
| |
| va_start(args, fmt); |
| res = vscnprintf(buf, sizeof(buf), fmt, args); |
| va_end(args); |
| |
| return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
| } |
| |
| #define DEBUGFS_READONLY_FILE(name, fmt, value...) \ |
| static ssize_t name## _read(struct file *file, char __user *userbuf, \ |
| size_t count, loff_t *ppos) \ |
| { \ |
| struct wl1271 *wl = file->private_data; \ |
| return wl1271_format_buffer(userbuf, count, ppos, \ |
| fmt "\n", ##value); \ |
| } \ |
| \ |
| static const struct file_operations name## _ops = { \ |
| .read = name## _read, \ |
| .open = wl1271_open_file_generic, \ |
| .llseek = generic_file_llseek, \ |
| }; |
| |
| #define DEBUGFS_ADD(name, parent) \ |
| entry = debugfs_create_file(#name, 0400, parent, \ |
| wl, &name## _ops); \ |
| if (!entry || IS_ERR(entry)) \ |
| goto err; \ |
| |
| #define DEBUGFS_FWSTATS_FILE(sub, name, fmt) \ |
| static ssize_t sub## _ ##name## _read(struct file *file, \ |
| char __user *userbuf, \ |
| size_t count, loff_t *ppos) \ |
| { \ |
| struct wl1271 *wl = file->private_data; \ |
| \ |
| wl1271_debugfs_update_stats(wl); \ |
| \ |
| return wl1271_format_buffer(userbuf, count, ppos, fmt "\n", \ |
| wl->stats.fw_stats->sub.name); \ |
| } \ |
| \ |
| static const struct file_operations sub## _ ##name## _ops = { \ |
| .read = sub## _ ##name## _read, \ |
| .open = wl1271_open_file_generic, \ |
| .llseek = generic_file_llseek, \ |
| }; |
| |
| #define DEBUGFS_FWSTATS_ADD(sub, name) \ |
| DEBUGFS_ADD(sub## _ ##name, stats) |
| |
| static void wl1271_debugfs_update_stats(struct wl1271 *wl) |
| { |
| int ret; |
| |
| mutex_lock(&wl->mutex); |
| |
| ret = wl1271_ps_elp_wakeup(wl); |
| if (ret < 0) |
| goto out; |
| |
| if (wl->state == WL1271_STATE_ON && |
| time_after(jiffies, wl->stats.fw_stats_update + |
| msecs_to_jiffies(WL1271_DEBUGFS_STATS_LIFETIME))) { |
| wl1271_acx_statistics(wl, wl->stats.fw_stats); |
| wl->stats.fw_stats_update = jiffies; |
| } |
| |
| wl1271_ps_elp_sleep(wl); |
| |
| out: |
| mutex_unlock(&wl->mutex); |
| } |
| |
| static int wl1271_open_file_generic(struct inode *inode, struct file *file) |
| { |
| file->private_data = inode->i_private; |
| return 0; |
| } |
| |
| DEBUGFS_FWSTATS_FILE(tx, internal_desc_overflow, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(rx, out_of_mem, "%u"); |
| DEBUGFS_FWSTATS_FILE(rx, hdr_overflow, "%u"); |
| DEBUGFS_FWSTATS_FILE(rx, hw_stuck, "%u"); |
| DEBUGFS_FWSTATS_FILE(rx, dropped, "%u"); |
| DEBUGFS_FWSTATS_FILE(rx, fcs_err, "%u"); |
| DEBUGFS_FWSTATS_FILE(rx, xfr_hint_trig, "%u"); |
| DEBUGFS_FWSTATS_FILE(rx, path_reset, "%u"); |
| DEBUGFS_FWSTATS_FILE(rx, reset_counter, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(dma, rx_requested, "%u"); |
| DEBUGFS_FWSTATS_FILE(dma, rx_errors, "%u"); |
| DEBUGFS_FWSTATS_FILE(dma, tx_requested, "%u"); |
| DEBUGFS_FWSTATS_FILE(dma, tx_errors, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(isr, cmd_cmplt, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, fiqs, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, rx_headers, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, rx_mem_overflow, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, rx_rdys, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, irqs, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, tx_procs, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, decrypt_done, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, dma0_done, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, dma1_done, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, tx_exch_complete, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, commands, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, rx_procs, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, hw_pm_mode_changes, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, host_acknowledges, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, pci_pm, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, wakeups, "%u"); |
| DEBUGFS_FWSTATS_FILE(isr, low_rssi, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(wep, addr_key_count, "%u"); |
| DEBUGFS_FWSTATS_FILE(wep, default_key_count, "%u"); |
| /* skipping wep.reserved */ |
| DEBUGFS_FWSTATS_FILE(wep, key_not_found, "%u"); |
| DEBUGFS_FWSTATS_FILE(wep, decrypt_fail, "%u"); |
| DEBUGFS_FWSTATS_FILE(wep, packets, "%u"); |
| DEBUGFS_FWSTATS_FILE(wep, interrupt, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(pwr, ps_enter, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, elp_enter, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, missing_bcns, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, wake_on_host, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, wake_on_timer_exp, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, tx_with_ps, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, tx_without_ps, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, rcvd_beacons, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, power_save_off, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, enable_ps, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, disable_ps, "%u"); |
| DEBUGFS_FWSTATS_FILE(pwr, fix_tsf_ps, "%u"); |
| /* skipping cont_miss_bcns_spread for now */ |
| DEBUGFS_FWSTATS_FILE(pwr, rcvd_awake_beacons, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(mic, rx_pkts, "%u"); |
| DEBUGFS_FWSTATS_FILE(mic, calc_failure, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(aes, encrypt_fail, "%u"); |
| DEBUGFS_FWSTATS_FILE(aes, decrypt_fail, "%u"); |
| DEBUGFS_FWSTATS_FILE(aes, encrypt_packets, "%u"); |
| DEBUGFS_FWSTATS_FILE(aes, decrypt_packets, "%u"); |
| DEBUGFS_FWSTATS_FILE(aes, encrypt_interrupt, "%u"); |
| DEBUGFS_FWSTATS_FILE(aes, decrypt_interrupt, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(event, heart_beat, "%u"); |
| DEBUGFS_FWSTATS_FILE(event, calibration, "%u"); |
| DEBUGFS_FWSTATS_FILE(event, rx_mismatch, "%u"); |
| DEBUGFS_FWSTATS_FILE(event, rx_mem_empty, "%u"); |
| DEBUGFS_FWSTATS_FILE(event, rx_pool, "%u"); |
| DEBUGFS_FWSTATS_FILE(event, oom_late, "%u"); |
| DEBUGFS_FWSTATS_FILE(event, phy_transmit_error, "%u"); |
| DEBUGFS_FWSTATS_FILE(event, tx_stuck, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(ps, pspoll_timeouts, "%u"); |
| DEBUGFS_FWSTATS_FILE(ps, upsd_timeouts, "%u"); |
| DEBUGFS_FWSTATS_FILE(ps, upsd_max_sptime, "%u"); |
| DEBUGFS_FWSTATS_FILE(ps, upsd_max_apturn, "%u"); |
| DEBUGFS_FWSTATS_FILE(ps, pspoll_max_apturn, "%u"); |
| DEBUGFS_FWSTATS_FILE(ps, pspoll_utilization, "%u"); |
| DEBUGFS_FWSTATS_FILE(ps, upsd_utilization, "%u"); |
| |
| DEBUGFS_FWSTATS_FILE(rxpipe, rx_prep_beacon_drop, "%u"); |
| DEBUGFS_FWSTATS_FILE(rxpipe, descr_host_int_trig_rx_data, "%u"); |
| DEBUGFS_FWSTATS_FILE(rxpipe, beacon_buffer_thres_host_int_trig_rx_data, "%u"); |
| DEBUGFS_FWSTATS_FILE(rxpipe, missed_beacon_host_int_trig_rx_data, "%u"); |
| DEBUGFS_FWSTATS_FILE(rxpipe, tx_xfr_host_int_trig_rx_data, "%u"); |
| |
| DEBUGFS_READONLY_FILE(retry_count, "%u", wl->stats.retry_count); |
| DEBUGFS_READONLY_FILE(excessive_retries, "%u", |
| wl->stats.excessive_retries); |
| |
| static ssize_t tx_queue_len_read(struct file *file, char __user *userbuf, |
| size_t count, loff_t *ppos) |
| { |
| struct wl1271 *wl = file->private_data; |
| u32 queue_len; |
| char buf[20]; |
| int res; |
| |
| queue_len = wl->tx_queue_count; |
| |
| res = scnprintf(buf, sizeof(buf), "%u\n", queue_len); |
| return simple_read_from_buffer(userbuf, count, ppos, buf, res); |
| } |
| |
| static const struct file_operations tx_queue_len_ops = { |
| .read = tx_queue_len_read, |
| .open = wl1271_open_file_generic, |
| .llseek = default_llseek, |
| }; |
| |
| static ssize_t gpio_power_read(struct file *file, char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct wl1271 *wl = file->private_data; |
| bool state = test_bit(WL1271_FLAG_GPIO_POWER, &wl->flags); |
| |
| int res; |
| char buf[10]; |
| |
| res = scnprintf(buf, sizeof(buf), "%d\n", state); |
| |
| return simple_read_from_buffer(user_buf, count, ppos, buf, res); |
| } |
| |
| static ssize_t gpio_power_write(struct file *file, |
| const char __user *user_buf, |
| size_t count, loff_t *ppos) |
| { |
| struct wl1271 *wl = file->private_data; |
| char buf[10]; |
| size_t len; |
| unsigned long value; |
| int ret; |
| |
| len = min(count, sizeof(buf) - 1); |
| if (copy_from_user(buf, user_buf, len)) { |
| return -EFAULT; |
| } |
| buf[len] = '\0'; |
| |
| ret = kstrtoul(buf, 0, &value); |
| if (ret < 0) { |
| wl1271_warning("illegal value in gpio_power"); |
| return -EINVAL; |
| } |
| |
| mutex_lock(&wl->mutex); |
| |
| if (value) |
| wl1271_power_on(wl); |
| else |
| wl1271_power_off(wl); |
| |
| mutex_unlock(&wl->mutex); |
| return count; |
| } |
| |
| static const struct file_operations gpio_power_ops = { |
| .read = gpio_power_read, |
| .write = gpio_power_write, |
| .open = wl1271_open_file_generic, |
| .llseek = default_llseek, |
| }; |
| |
| static int wl1271_debugfs_add_files(struct wl1271 *wl, |
| struct dentry *rootdir) |
| { |
| int ret = 0; |
| struct dentry *entry, *stats; |
| |
| stats = debugfs_create_dir("fw-statistics", rootdir); |
| if (!stats || IS_ERR(stats)) { |
| entry = stats; |
| goto err; |
| } |
| |
| DEBUGFS_FWSTATS_ADD(tx, internal_desc_overflow); |
| |
| DEBUGFS_FWSTATS_ADD(rx, out_of_mem); |
| DEBUGFS_FWSTATS_ADD(rx, hdr_overflow); |
| DEBUGFS_FWSTATS_ADD(rx, hw_stuck); |
| DEBUGFS_FWSTATS_ADD(rx, dropped); |
| DEBUGFS_FWSTATS_ADD(rx, fcs_err); |
| DEBUGFS_FWSTATS_ADD(rx, xfr_hint_trig); |
| DEBUGFS_FWSTATS_ADD(rx, path_reset); |
| DEBUGFS_FWSTATS_ADD(rx, reset_counter); |
| |
| DEBUGFS_FWSTATS_ADD(dma, rx_requested); |
| DEBUGFS_FWSTATS_ADD(dma, rx_errors); |
| DEBUGFS_FWSTATS_ADD(dma, tx_requested); |
| DEBUGFS_FWSTATS_ADD(dma, tx_errors); |
| |
| DEBUGFS_FWSTATS_ADD(isr, cmd_cmplt); |
| DEBUGFS_FWSTATS_ADD(isr, fiqs); |
| DEBUGFS_FWSTATS_ADD(isr, rx_headers); |
| DEBUGFS_FWSTATS_ADD(isr, rx_mem_overflow); |
| DEBUGFS_FWSTATS_ADD(isr, rx_rdys); |
| DEBUGFS_FWSTATS_ADD(isr, irqs); |
| DEBUGFS_FWSTATS_ADD(isr, tx_procs); |
| DEBUGFS_FWSTATS_ADD(isr, decrypt_done); |
| DEBUGFS_FWSTATS_ADD(isr, dma0_done); |
| DEBUGFS_FWSTATS_ADD(isr, dma1_done); |
| DEBUGFS_FWSTATS_ADD(isr, tx_exch_complete); |
| DEBUGFS_FWSTATS_ADD(isr, commands); |
| DEBUGFS_FWSTATS_ADD(isr, rx_procs); |
| DEBUGFS_FWSTATS_ADD(isr, hw_pm_mode_changes); |
| DEBUGFS_FWSTATS_ADD(isr, host_acknowledges); |
| DEBUGFS_FWSTATS_ADD(isr, pci_pm); |
| DEBUGFS_FWSTATS_ADD(isr, wakeups); |
| DEBUGFS_FWSTATS_ADD(isr, low_rssi); |
| |
| DEBUGFS_FWSTATS_ADD(wep, addr_key_count); |
| DEBUGFS_FWSTATS_ADD(wep, default_key_count); |
| /* skipping wep.reserved */ |
| DEBUGFS_FWSTATS_ADD(wep, key_not_found); |
| DEBUGFS_FWSTATS_ADD(wep, decrypt_fail); |
| DEBUGFS_FWSTATS_ADD(wep, packets); |
| DEBUGFS_FWSTATS_ADD(wep, interrupt); |
| |
| DEBUGFS_FWSTATS_ADD(pwr, ps_enter); |
| DEBUGFS_FWSTATS_ADD(pwr, elp_enter); |
| DEBUGFS_FWSTATS_ADD(pwr, missing_bcns); |
| DEBUGFS_FWSTATS_ADD(pwr, wake_on_host); |
| DEBUGFS_FWSTATS_ADD(pwr, wake_on_timer_exp); |
| DEBUGFS_FWSTATS_ADD(pwr, tx_with_ps); |
| DEBUGFS_FWSTATS_ADD(pwr, tx_without_ps); |
| DEBUGFS_FWSTATS_ADD(pwr, rcvd_beacons); |
| DEBUGFS_FWSTATS_ADD(pwr, power_save_off); |
| DEBUGFS_FWSTATS_ADD(pwr, enable_ps); |
| DEBUGFS_FWSTATS_ADD(pwr, disable_ps); |
| DEBUGFS_FWSTATS_ADD(pwr, fix_tsf_ps); |
| /* skipping cont_miss_bcns_spread for now */ |
| DEBUGFS_FWSTATS_ADD(pwr, rcvd_awake_beacons); |
| |
| DEBUGFS_FWSTATS_ADD(mic, rx_pkts); |
| DEBUGFS_FWSTATS_ADD(mic, calc_failure); |
| |
| DEBUGFS_FWSTATS_ADD(aes, encrypt_fail); |
| DEBUGFS_FWSTATS_ADD(aes, decrypt_fail); |
| DEBUGFS_FWSTATS_ADD(aes, encrypt_packets); |
| DEBUGFS_FWSTATS_ADD(aes, decrypt_packets); |
| DEBUGFS_FWSTATS_ADD(aes, encrypt_interrupt); |
| DEBUGFS_FWSTATS_ADD(aes, decrypt_interrupt); |
| |
| DEBUGFS_FWSTATS_ADD(event, heart_beat); |
| DEBUGFS_FWSTATS_ADD(event, calibration); |
| DEBUGFS_FWSTATS_ADD(event, rx_mismatch); |
| DEBUGFS_FWSTATS_ADD(event, rx_mem_empty); |
| DEBUGFS_FWSTATS_ADD(event, rx_pool); |
| DEBUGFS_FWSTATS_ADD(event, oom_late); |
| DEBUGFS_FWSTATS_ADD(event, phy_transmit_error); |
| DEBUGFS_FWSTATS_ADD(event, tx_stuck); |
| |
| DEBUGFS_FWSTATS_ADD(ps, pspoll_timeouts); |
| DEBUGFS_FWSTATS_ADD(ps, upsd_timeouts); |
| DEBUGFS_FWSTATS_ADD(ps, upsd_max_sptime); |
| DEBUGFS_FWSTATS_ADD(ps, upsd_max_apturn); |
| DEBUGFS_FWSTATS_ADD(ps, pspoll_max_apturn); |
| DEBUGFS_FWSTATS_ADD(ps, pspoll_utilization); |
| DEBUGFS_FWSTATS_ADD(ps, upsd_utilization); |
| |
| DEBUGFS_FWSTATS_ADD(rxpipe, rx_prep_beacon_drop); |
| DEBUGFS_FWSTATS_ADD(rxpipe, descr_host_int_trig_rx_data); |
| DEBUGFS_FWSTATS_ADD(rxpipe, beacon_buffer_thres_host_int_trig_rx_data); |
| DEBUGFS_FWSTATS_ADD(rxpipe, missed_beacon_host_int_trig_rx_data); |
| DEBUGFS_FWSTATS_ADD(rxpipe, tx_xfr_host_int_trig_rx_data); |
| |
| DEBUGFS_ADD(tx_queue_len, rootdir); |
| DEBUGFS_ADD(retry_count, rootdir); |
| DEBUGFS_ADD(excessive_retries, rootdir); |
| |
| DEBUGFS_ADD(gpio_power, rootdir); |
| |
| return 0; |
| |
| err: |
| if (IS_ERR(entry)) |
| ret = PTR_ERR(entry); |
| else |
| ret = -ENOMEM; |
| |
| return ret; |
| } |
| |
| void wl1271_debugfs_reset(struct wl1271 *wl) |
| { |
| if (!wl->stats.fw_stats) |
| return; |
| |
| memset(wl->stats.fw_stats, 0, sizeof(*wl->stats.fw_stats)); |
| wl->stats.retry_count = 0; |
| wl->stats.excessive_retries = 0; |
| } |
| |
| int wl1271_debugfs_init(struct wl1271 *wl) |
| { |
| int ret; |
| struct dentry *rootdir; |
| |
| rootdir = debugfs_create_dir(KBUILD_MODNAME, |
| wl->hw->wiphy->debugfsdir); |
| |
| if (IS_ERR(rootdir)) { |
| ret = PTR_ERR(rootdir); |
| goto err; |
| } |
| |
| wl->stats.fw_stats = kzalloc(sizeof(*wl->stats.fw_stats), |
| GFP_KERNEL); |
| |
| if (!wl->stats.fw_stats) { |
| ret = -ENOMEM; |
| goto err_fw; |
| } |
| |
| wl->stats.fw_stats_update = jiffies; |
| |
| ret = wl1271_debugfs_add_files(wl, rootdir); |
| |
| if (ret < 0) |
| goto err_file; |
| |
| return 0; |
| |
| err_file: |
| kfree(wl->stats.fw_stats); |
| wl->stats.fw_stats = NULL; |
| |
| err_fw: |
| debugfs_remove_recursive(rootdir); |
| |
| err: |
| return ret; |
| } |
| |
| void wl1271_debugfs_exit(struct wl1271 *wl) |
| { |
| kfree(wl->stats.fw_stats); |
| wl->stats.fw_stats = NULL; |
| } |