wl12xx: add driver

wl12xx is a driver for TI wl1251 802.11 chipset designed for embedded
devices, supporting both SDIO and SPI busses. Currently the driver
supports only SPI. Adding support 1253 (the 5 GHz version) should be
relatively easy. More information here:

http://focus.ti.com/general/docs/wtbu/wtbuproductcontent.tsp?contentId=4711&navigationId=12494&templateId=6123

(Collapsed original sequence of pre-merge patches into single commit for
initial merge. -- JWL)

Signed-off-by: Kalle Valo <kalle.valo@nokia.com>
Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 508 insertions, 0 deletions

diff --git a/drivers/net/wireless/wl12xx/debugfs.c b/drivers/net/wireless/wl12xx/debugfs.c
new file mode 100644
index 00000000000..cdb368ce4da
--- /dev/null
+++ b/drivers/net/wireless/wl12xx/debugfs.c
@@ -0,0 +1,508 @@
+/*
+ * This file is part of wl12xx
+ *
+ * Copyright (C) 2009 Nokia Corporation
+ *
+ * Contact: Kalle Valo <kalle.valo@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 "wl12xx.h"
+#include "acx.h"
+
+/* ms */
+#define WL12XX_DEBUGFS_STATS_LIFETIME 1000
+
+/* debugfs macros idea from mac80211 */
+
+#define DEBUGFS_READONLY_FILE(name, buflen, fmt, value...)		\
+static ssize_t name## _read(struct file *file, char __user *userbuf,	\
+			    size_t count, loff_t *ppos)			\
+{									\
+	struct wl12xx *wl = file->private_data;				\
+	char buf[buflen];						\
+	int res;							\
+									\
+	res = scnprintf(buf, buflen, fmt "\n", ##value);		\
+	return simple_read_from_buffer(userbuf, count, ppos, buf, res);	\
+}									\
+									\
+static const struct file_operations name## _ops = {			\
+	.read = name## _read,						\
+	.open = wl12xx_open_file_generic,				\
+};
+
+#define DEBUGFS_ADD(name, parent)					\
+	wl->debugfs.name = debugfs_create_file(#name, 0400, parent,	\
+					       wl, &name## _ops);	\
+	if (IS_ERR(wl->debugfs.name)) {					\
+		ret = PTR_ERR(wl->debugfs.name);			\
+		wl->debugfs.name = NULL;				\
+		goto out;						\
+	}
+
+#define DEBUGFS_DEL(name)						\
+	do {								\
+		debugfs_remove(wl->debugfs.name);			\
+		wl->debugfs.name = NULL;				\
+	} while (0)
+
+#define DEBUGFS_FWSTATS_FILE(sub, name, buflen, fmt)			\
+static ssize_t sub## _ ##name## _read(struct file *file,		\
+				      char __user *userbuf,		\
+				      size_t count, loff_t *ppos)	\
+{									\
+	struct wl12xx *wl = file->private_data;				\
+	char buf[buflen];						\
+	int res;							\
+									\
+	wl12xx_debugfs_update_stats(wl);				\
+									\
+	res = scnprintf(buf, buflen, fmt "\n",				\
+			wl->stats.fw_stats->sub.name);			\
+	return simple_read_from_buffer(userbuf, count, ppos, buf, res);	\
+}									\
+									\
+static const struct file_operations sub## _ ##name## _ops = {		\
+	.read = sub## _ ##name## _read,					\
+	.open = wl12xx_open_file_generic,				\
+};
+
+#define DEBUGFS_FWSTATS_ADD(sub, name)				\
+	DEBUGFS_ADD(sub## _ ##name, wl->debugfs.fw_statistics)
+
+#define DEBUGFS_FWSTATS_DEL(sub, name)				\
+	DEBUGFS_DEL(sub## _ ##name)
+
+static void wl12xx_debugfs_update_stats(struct wl12xx *wl)
+{
+	mutex_lock(&wl->mutex);
+
+	if (wl->state == WL12XX_STATE_ON &&
+	    time_after(jiffies, wl->stats.fw_stats_update +
+		       msecs_to_jiffies(WL12XX_DEBUGFS_STATS_LIFETIME))) {
+		wl12xx_acx_statistics(wl, wl->stats.fw_stats);
+		wl->stats.fw_stats_update = jiffies;
+	}
+
+	mutex_unlock(&wl->mutex);
+}
+
+static int wl12xx_open_file_generic(struct inode *inode, struct file *file)
+{
+	file->private_data = inode->i_private;
+	return 0;
+}
+
+DEBUGFS_FWSTATS_FILE(tx, internal_desc_overflow, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(rx, out_of_mem, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rx, hdr_overflow, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rx, hw_stuck, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rx, dropped, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rx, fcs_err, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rx, xfr_hint_trig, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rx, path_reset, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rx, reset_counter, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(dma, rx_requested, 20, "%u");
+DEBUGFS_FWSTATS_FILE(dma, rx_errors, 20, "%u");
+DEBUGFS_FWSTATS_FILE(dma, tx_requested, 20, "%u");
+DEBUGFS_FWSTATS_FILE(dma, tx_errors, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(isr, cmd_cmplt, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, fiqs, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, rx_headers, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, rx_mem_overflow, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, rx_rdys, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, irqs, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, tx_procs, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, decrypt_done, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, dma0_done, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, dma1_done, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, tx_exch_complete, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, commands, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, rx_procs, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, hw_pm_mode_changes, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, host_acknowledges, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, pci_pm, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, wakeups, 20, "%u");
+DEBUGFS_FWSTATS_FILE(isr, low_rssi, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(wep, addr_key_count, 20, "%u");
+DEBUGFS_FWSTATS_FILE(wep, default_key_count, 20, "%u");
+/* skipping wep.reserved */
+DEBUGFS_FWSTATS_FILE(wep, key_not_found, 20, "%u");
+DEBUGFS_FWSTATS_FILE(wep, decrypt_fail, 20, "%u");
+DEBUGFS_FWSTATS_FILE(wep, packets, 20, "%u");
+DEBUGFS_FWSTATS_FILE(wep, interrupt, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(pwr, ps_enter, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, elp_enter, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, missing_bcns, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, wake_on_host, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, wake_on_timer_exp, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, tx_with_ps, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, tx_without_ps, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, rcvd_beacons, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, power_save_off, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, enable_ps, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, disable_ps, 20, "%u");
+DEBUGFS_FWSTATS_FILE(pwr, fix_tsf_ps, 20, "%u");
+/* skipping cont_miss_bcns_spread for now */
+DEBUGFS_FWSTATS_FILE(pwr, rcvd_awake_beacons, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(mic, rx_pkts, 20, "%u");
+DEBUGFS_FWSTATS_FILE(mic, calc_failure, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(aes, encrypt_fail, 20, "%u");
+DEBUGFS_FWSTATS_FILE(aes, decrypt_fail, 20, "%u");
+DEBUGFS_FWSTATS_FILE(aes, encrypt_packets, 20, "%u");
+DEBUGFS_FWSTATS_FILE(aes, decrypt_packets, 20, "%u");
+DEBUGFS_FWSTATS_FILE(aes, encrypt_interrupt, 20, "%u");
+DEBUGFS_FWSTATS_FILE(aes, decrypt_interrupt, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(event, heart_beat, 20, "%u");
+DEBUGFS_FWSTATS_FILE(event, calibration, 20, "%u");
+DEBUGFS_FWSTATS_FILE(event, rx_mismatch, 20, "%u");
+DEBUGFS_FWSTATS_FILE(event, rx_mem_empty, 20, "%u");
+DEBUGFS_FWSTATS_FILE(event, rx_pool, 20, "%u");
+DEBUGFS_FWSTATS_FILE(event, oom_late, 20, "%u");
+DEBUGFS_FWSTATS_FILE(event, phy_transmit_error, 20, "%u");
+DEBUGFS_FWSTATS_FILE(event, tx_stuck, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(ps, pspoll_timeouts, 20, "%u");
+DEBUGFS_FWSTATS_FILE(ps, upsd_timeouts, 20, "%u");
+DEBUGFS_FWSTATS_FILE(ps, upsd_max_sptime, 20, "%u");
+DEBUGFS_FWSTATS_FILE(ps, upsd_max_apturn, 20, "%u");
+DEBUGFS_FWSTATS_FILE(ps, pspoll_max_apturn, 20, "%u");
+DEBUGFS_FWSTATS_FILE(ps, pspoll_utilization, 20, "%u");
+DEBUGFS_FWSTATS_FILE(ps, upsd_utilization, 20, "%u");
+
+DEBUGFS_FWSTATS_FILE(rxpipe, rx_prep_beacon_drop, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rxpipe, descr_host_int_trig_rx_data, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rxpipe, beacon_buffer_thres_host_int_trig_rx_data,
+		     20, "%u");
+DEBUGFS_FWSTATS_FILE(rxpipe, missed_beacon_host_int_trig_rx_data, 20, "%u");
+DEBUGFS_FWSTATS_FILE(rxpipe, tx_xfr_host_int_trig_rx_data, 20, "%u");
+
+DEBUGFS_READONLY_FILE(retry_count, 20, "%u", wl->stats.retry_count);
+DEBUGFS_READONLY_FILE(excessive_retries, 20, "%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 wl12xx *wl = file->private_data;
+	u32 queue_len;
+	char buf[20];
+	int res;
+
+	queue_len = skb_queue_len(&wl->tx_queue);
+
+	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 = wl12xx_open_file_generic,
+};
+
+static void wl12xx_debugfs_delete_files(struct wl12xx *wl)
+{
+	DEBUGFS_FWSTATS_DEL(tx, internal_desc_overflow);
+
+	DEBUGFS_FWSTATS_DEL(rx, out_of_mem);
+	DEBUGFS_FWSTATS_DEL(rx, hdr_overflow);
+	DEBUGFS_FWSTATS_DEL(rx, hw_stuck);
+	DEBUGFS_FWSTATS_DEL(rx, dropped);
+	DEBUGFS_FWSTATS_DEL(rx, fcs_err);
+	DEBUGFS_FWSTATS_DEL(rx, xfr_hint_trig);
+	DEBUGFS_FWSTATS_DEL(rx, path_reset);
+	DEBUGFS_FWSTATS_DEL(rx, reset_counter);
+
+	DEBUGFS_FWSTATS_DEL(dma, rx_requested);
+	DEBUGFS_FWSTATS_DEL(dma, rx_errors);
+	DEBUGFS_FWSTATS_DEL(dma, tx_requested);
+	DEBUGFS_FWSTATS_DEL(dma, tx_errors);
+
+	DEBUGFS_FWSTATS_DEL(isr, cmd_cmplt);
+	DEBUGFS_FWSTATS_DEL(isr, fiqs);
+	DEBUGFS_FWSTATS_DEL(isr, rx_headers);
+	DEBUGFS_FWSTATS_DEL(isr, rx_mem_overflow);
+	DEBUGFS_FWSTATS_DEL(isr, rx_rdys);
+	DEBUGFS_FWSTATS_DEL(isr, irqs);
+	DEBUGFS_FWSTATS_DEL(isr, tx_procs);
+	DEBUGFS_FWSTATS_DEL(isr, decrypt_done);
+	DEBUGFS_FWSTATS_DEL(isr, dma0_done);
+	DEBUGFS_FWSTATS_DEL(isr, dma1_done);
+	DEBUGFS_FWSTATS_DEL(isr, tx_exch_complete);
+	DEBUGFS_FWSTATS_DEL(isr, commands);
+	DEBUGFS_FWSTATS_DEL(isr, rx_procs);
+	DEBUGFS_FWSTATS_DEL(isr, hw_pm_mode_changes);
+	DEBUGFS_FWSTATS_DEL(isr, host_acknowledges);
+	DEBUGFS_FWSTATS_DEL(isr, pci_pm);
+	DEBUGFS_FWSTATS_DEL(isr, wakeups);
+	DEBUGFS_FWSTATS_DEL(isr, low_rssi);
+
+	DEBUGFS_FWSTATS_DEL(wep, addr_key_count);
+	DEBUGFS_FWSTATS_DEL(wep, default_key_count);
+	/* skipping wep.reserved */
+	DEBUGFS_FWSTATS_DEL(wep, key_not_found);
+	DEBUGFS_FWSTATS_DEL(wep, decrypt_fail);
+	DEBUGFS_FWSTATS_DEL(wep, packets);
+	DEBUGFS_FWSTATS_DEL(wep, interrupt);
+
+	DEBUGFS_FWSTATS_DEL(pwr, ps_enter);
+	DEBUGFS_FWSTATS_DEL(pwr, elp_enter);
+	DEBUGFS_FWSTATS_DEL(pwr, missing_bcns);
+	DEBUGFS_FWSTATS_DEL(pwr, wake_on_host);
+	DEBUGFS_FWSTATS_DEL(pwr, wake_on_timer_exp);
+	DEBUGFS_FWSTATS_DEL(pwr, tx_with_ps);
+	DEBUGFS_FWSTATS_DEL(pwr, tx_without_ps);
+	DEBUGFS_FWSTATS_DEL(pwr, rcvd_beacons);
+	DEBUGFS_FWSTATS_DEL(pwr, power_save_off);
+	DEBUGFS_FWSTATS_DEL(pwr, enable_ps);
+	DEBUGFS_FWSTATS_DEL(pwr, disable_ps);
+	DEBUGFS_FWSTATS_DEL(pwr, fix_tsf_ps);
+	/* skipping cont_miss_bcns_spread for now */
+	DEBUGFS_FWSTATS_DEL(pwr, rcvd_awake_beacons);
+
+	DEBUGFS_FWSTATS_DEL(mic, rx_pkts);
+	DEBUGFS_FWSTATS_DEL(mic, calc_failure);
+
+	DEBUGFS_FWSTATS_DEL(aes, encrypt_fail);
+	DEBUGFS_FWSTATS_DEL(aes, decrypt_fail);
+	DEBUGFS_FWSTATS_DEL(aes, encrypt_packets);
+	DEBUGFS_FWSTATS_DEL(aes, decrypt_packets);
+	DEBUGFS_FWSTATS_DEL(aes, encrypt_interrupt);
+	DEBUGFS_FWSTATS_DEL(aes, decrypt_interrupt);
+
+	DEBUGFS_FWSTATS_DEL(event, heart_beat);
+	DEBUGFS_FWSTATS_DEL(event, calibration);
+	DEBUGFS_FWSTATS_DEL(event, rx_mismatch);
+	DEBUGFS_FWSTATS_DEL(event, rx_mem_empty);
+	DEBUGFS_FWSTATS_DEL(event, rx_pool);
+	DEBUGFS_FWSTATS_DEL(event, oom_late);
+	DEBUGFS_FWSTATS_DEL(event, phy_transmit_error);
+	DEBUGFS_FWSTATS_DEL(event, tx_stuck);
+
+	DEBUGFS_FWSTATS_DEL(ps, pspoll_timeouts);
+	DEBUGFS_FWSTATS_DEL(ps, upsd_timeouts);
+	DEBUGFS_FWSTATS_DEL(ps, upsd_max_sptime);
+	DEBUGFS_FWSTATS_DEL(ps, upsd_max_apturn);
+	DEBUGFS_FWSTATS_DEL(ps, pspoll_max_apturn);
+	DEBUGFS_FWSTATS_DEL(ps, pspoll_utilization);
+	DEBUGFS_FWSTATS_DEL(ps, upsd_utilization);
+
+	DEBUGFS_FWSTATS_DEL(rxpipe, rx_prep_beacon_drop);
+	DEBUGFS_FWSTATS_DEL(rxpipe, descr_host_int_trig_rx_data);
+	DEBUGFS_FWSTATS_DEL(rxpipe, beacon_buffer_thres_host_int_trig_rx_data);
+	DEBUGFS_FWSTATS_DEL(rxpipe, missed_beacon_host_int_trig_rx_data);
+	DEBUGFS_FWSTATS_DEL(rxpipe, tx_xfr_host_int_trig_rx_data);
+
+	DEBUGFS_DEL(tx_queue_len);
+	DEBUGFS_DEL(retry_count);
+	DEBUGFS_DEL(excessive_retries);
+}
+
+static int wl12xx_debugfs_add_files(struct wl12xx *wl)
+{
+	int ret = 0;
+
+	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, wl->debugfs.rootdir);
+	DEBUGFS_ADD(retry_count, wl->debugfs.rootdir);
+	DEBUGFS_ADD(excessive_retries, wl->debugfs.rootdir);
+
+out:
+	if (ret < 0)
+		wl12xx_debugfs_delete_files(wl);
+
+	return ret;
+}
+
+void wl12xx_debugfs_reset(struct wl12xx *wl)
+{
+	memset(wl->stats.fw_stats, 0, sizeof(*wl->stats.fw_stats));
+	wl->stats.retry_count = 0;
+	wl->stats.excessive_retries = 0;
+}
+
+int wl12xx_debugfs_init(struct wl12xx *wl)
+{
+	int ret;
+
+	wl->debugfs.rootdir = debugfs_create_dir(KBUILD_MODNAME, NULL);
+
+	if (IS_ERR(wl->debugfs.rootdir)) {
+		ret = PTR_ERR(wl->debugfs.rootdir);
+		wl->debugfs.rootdir = NULL;
+		goto err;
+	}
+
+	wl->debugfs.fw_statistics = debugfs_create_dir("fw-statistics",
+						       wl->debugfs.rootdir);
+
+	if (IS_ERR(wl->debugfs.fw_statistics)) {
+		ret = PTR_ERR(wl->debugfs.fw_statistics);
+		wl->debugfs.fw_statistics = NULL;
+		goto err_root;
+	}
+
+	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 = wl12xx_debugfs_add_files(wl);
+
+	if (ret < 0)
+		goto err_file;
+
+	return 0;
+
+err_file:
+	kfree(wl->stats.fw_stats);
+	wl->stats.fw_stats = NULL;
+
+err_fw:
+	debugfs_remove(wl->debugfs.fw_statistics);
+	wl->debugfs.fw_statistics = NULL;
+
+err_root:
+	debugfs_remove(wl->debugfs.rootdir);
+	wl->debugfs.rootdir = NULL;
+
+err:
+	return ret;
+}
+
+void wl12xx_debugfs_exit(struct wl12xx *wl)
+{
+	wl12xx_debugfs_delete_files(wl);
+
+	kfree(wl->stats.fw_stats);
+	wl->stats.fw_stats = NULL;
+
+	debugfs_remove(wl->debugfs.fw_statistics);
+	wl->debugfs.fw_statistics = NULL;
+
+	debugfs_remove(wl->debugfs.rootdir);
+	wl->debugfs.rootdir = NULL;
+
+}