drivers/net/wireless/iwlegacy/3945-debug.c - arm/linux - Git at Google


            
            /******************************************************************************

            
             *

            
             * GPL LICENSE SUMMARY

            
             *

            
             * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.

            
             *

            
             * This program is free software; you can redistribute it and/or modify

            
             * it under the terms of version 2 of the GNU General Public License 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,

            
             * USA

            
             *

            
             * The full GNU General Public License is included in this distribution

            
             * in the file called LICENSE.GPL.

            
             *

            
             * Contact Information:

            
             *  Intel Linux Wireless <ilw@linux.intel.com>

            
             * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497

            
             *****************************************************************************/


            #include "common.h"

            
            #include "3945.h"


            static int

            
            il3945_stats_flag(struct il_priv *il, char *buf, int bufsz)

            
            {

            
            	int p = 0;


            	p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n",

            
            		       le32_to_cpu(il->_3945.stats.flag));

            
            	if (le32_to_cpu(il->_3945.stats.flag) & UCODE_STATS_CLEAR_MSK)

            
            		p += scnprintf(buf + p, bufsz - p,

            
            			       "\tStatistics have been cleared\n");

            
            	p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n",

            
            		       (le32_to_cpu(il->_3945.stats.flag) &

            
            			UCODE_STATS_FREQUENCY_MSK) ? "2.4 GHz" : "5.2 GHz");

            
            	p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n",

            
            		       (le32_to_cpu(il->_3945.stats.flag) &

            
            			UCODE_STATS_NARROW_BAND_MSK) ? "enabled" : "disabled");

            
            	return p;

            
            }


            static ssize_t

            
            il3945_ucode_rx_stats_read(struct file *file, char __user *user_buf,

            
            			   size_t count, loff_t *ppos)

            
            {

            
            	struct il_priv *il = file->private_data;

            
            	int pos = 0;

            
            	char *buf;

            
            	int bufsz =

            
            	    sizeof(struct iwl39_stats_rx_phy) * 40 +

            
            	    sizeof(struct iwl39_stats_rx_non_phy) * 40 + 400;

            
            	ssize_t ret;

            
            	struct iwl39_stats_rx_phy *ofdm, *accum_ofdm, *delta_ofdm, *max_ofdm;

            
            	struct iwl39_stats_rx_phy *cck, *accum_cck, *delta_cck, *max_cck;

            
            	struct iwl39_stats_rx_non_phy *general, *accum_general;

            
            	struct iwl39_stats_rx_non_phy *delta_general, *max_general;


            	if (!il_is_alive(il))

            
            		return -EAGAIN;


            	buf = kzalloc(bufsz, GFP_KERNEL);

            
            	if (!buf) {

            
            		IL_ERR("Can not allocate Buffer\n");

            
            		return -ENOMEM;

            
            	}


            	/*

            
            	 * The statistic information display here is based on

            
            	 * the last stats notification from uCode

            
            	 * might not reflect the current uCode activity

            
            	 */

            
            	ofdm = &il->_3945.stats.rx.ofdm;

            
            	cck = &il->_3945.stats.rx.cck;

            
            	general = &il->_3945.stats.rx.general;

            
            	accum_ofdm = &il->_3945.accum_stats.rx.ofdm;

            
            	accum_cck = &il->_3945.accum_stats.rx.cck;

            
            	accum_general = &il->_3945.accum_stats.rx.general;

            
            	delta_ofdm = &il->_3945.delta_stats.rx.ofdm;

            
            	delta_cck = &il->_3945.delta_stats.rx.cck;

            
            	delta_general = &il->_3945.delta_stats.rx.general;

            
            	max_ofdm = &il->_3945.max_delta.rx.ofdm;

            
            	max_cck = &il->_3945.max_delta.rx.cck;

            
            	max_general = &il->_3945.max_delta.rx.general;


            	pos += il3945_stats_flag(il, buf, bufsz);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "%-32s     current"

            
            		      "acumulative       delta         max\n",

            
            		      "Statistics_Rx - OFDM:");

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "ina_cnt:",

            
            		      le32_to_cpu(ofdm->ina_cnt), accum_ofdm->ina_cnt,

            
            		      delta_ofdm->ina_cnt, max_ofdm->ina_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "fina_cnt:",

            
            		      le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt,

            
            		      delta_ofdm->fina_cnt, max_ofdm->fina_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "plcp_err:",

            
            		      le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err,

            
            		      delta_ofdm->plcp_err, max_ofdm->plcp_err);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "crc32_err:",

            
            		      le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err,

            
            		      delta_ofdm->crc32_err, max_ofdm->crc32_err);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "overrun_err:",

            
            		      le32_to_cpu(ofdm->overrun_err), accum_ofdm->overrun_err,

            
            		      delta_ofdm->overrun_err, max_ofdm->overrun_err);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "early_overrun_err:",

            
            		      le32_to_cpu(ofdm->early_overrun_err),

            
            		      accum_ofdm->early_overrun_err,

            
            		      delta_ofdm->early_overrun_err,

            
            		      max_ofdm->early_overrun_err);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "crc32_good:",

            
            		      le32_to_cpu(ofdm->crc32_good), accum_ofdm->crc32_good,

            
            		      delta_ofdm->crc32_good, max_ofdm->crc32_good);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "false_alarm_cnt:",

            
            		      le32_to_cpu(ofdm->false_alarm_cnt),

            
            		      accum_ofdm->false_alarm_cnt, delta_ofdm->false_alarm_cnt,

            
            		      max_ofdm->false_alarm_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "fina_sync_err_cnt:",

            
            		      le32_to_cpu(ofdm->fina_sync_err_cnt),

            
            		      accum_ofdm->fina_sync_err_cnt,

            
            		      delta_ofdm->fina_sync_err_cnt,

            
            		      max_ofdm->fina_sync_err_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "sfd_timeout:",

            
            		      le32_to_cpu(ofdm->sfd_timeout), accum_ofdm->sfd_timeout,

            
            		      delta_ofdm->sfd_timeout, max_ofdm->sfd_timeout);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "fina_timeout:",

            
            		      le32_to_cpu(ofdm->fina_timeout), accum_ofdm->fina_timeout,

            
            		      delta_ofdm->fina_timeout, max_ofdm->fina_timeout);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "unresponded_rts:",

            
            		      le32_to_cpu(ofdm->unresponded_rts),

            
            		      accum_ofdm->unresponded_rts, delta_ofdm->unresponded_rts,

            
            		      max_ofdm->unresponded_rts);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n",

            
            		      "rxe_frame_lmt_ovrun:",

            
            		      le32_to_cpu(ofdm->rxe_frame_limit_overrun),

            
            		      accum_ofdm->rxe_frame_limit_overrun,

            
            		      delta_ofdm->rxe_frame_limit_overrun,

            
            		      max_ofdm->rxe_frame_limit_overrun);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "sent_ack_cnt:",

            
            		      le32_to_cpu(ofdm->sent_ack_cnt), accum_ofdm->sent_ack_cnt,

            
            		      delta_ofdm->sent_ack_cnt, max_ofdm->sent_ack_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "sent_cts_cnt:",

            
            		      le32_to_cpu(ofdm->sent_cts_cnt), accum_ofdm->sent_cts_cnt,

            
            		      delta_ofdm->sent_cts_cnt, max_ofdm->sent_cts_cnt);


            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "%-32s     current"

            
            		      "acumulative       delta         max\n",

            
            		      "Statistics_Rx - CCK:");

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "ina_cnt:",

            
            		      le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt,

            
            		      delta_cck->ina_cnt, max_cck->ina_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "fina_cnt:",

            
            		      le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt,

            
            		      delta_cck->fina_cnt, max_cck->fina_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "plcp_err:",

            
            		      le32_to_cpu(cck->plcp_err), accum_cck->plcp_err,

            
            		      delta_cck->plcp_err, max_cck->plcp_err);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "crc32_err:",

            
            		      le32_to_cpu(cck->crc32_err), accum_cck->crc32_err,

            
            		      delta_cck->crc32_err, max_cck->crc32_err);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "overrun_err:",

            
            		      le32_to_cpu(cck->overrun_err), accum_cck->overrun_err,

            
            		      delta_cck->overrun_err, max_cck->overrun_err);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "early_overrun_err:",

            
            		      le32_to_cpu(cck->early_overrun_err),

            
            		      accum_cck->early_overrun_err,

            
            		      delta_cck->early_overrun_err, max_cck->early_overrun_err);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "crc32_good:",

            
            		      le32_to_cpu(cck->crc32_good), accum_cck->crc32_good,

            
            		      delta_cck->crc32_good, max_cck->crc32_good);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "false_alarm_cnt:",

            
            		      le32_to_cpu(cck->false_alarm_cnt),

            
            		      accum_cck->false_alarm_cnt, delta_cck->false_alarm_cnt,

            
            		      max_cck->false_alarm_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "fina_sync_err_cnt:",

            
            		      le32_to_cpu(cck->fina_sync_err_cnt),

            
            		      accum_cck->fina_sync_err_cnt,

            
            		      delta_cck->fina_sync_err_cnt, max_cck->fina_sync_err_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "sfd_timeout:",

            
            		      le32_to_cpu(cck->sfd_timeout), accum_cck->sfd_timeout,

            
            		      delta_cck->sfd_timeout, max_cck->sfd_timeout);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "fina_timeout:",

            
            		      le32_to_cpu(cck->fina_timeout), accum_cck->fina_timeout,

            
            		      delta_cck->fina_timeout, max_cck->fina_timeout);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "unresponded_rts:",

            
            		      le32_to_cpu(cck->unresponded_rts),

            
            		      accum_cck->unresponded_rts, delta_cck->unresponded_rts,

            
            		      max_cck->unresponded_rts);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n",

            
            		      "rxe_frame_lmt_ovrun:",

            
            		      le32_to_cpu(cck->rxe_frame_limit_overrun),

            
            		      accum_cck->rxe_frame_limit_overrun,

            
            		      delta_cck->rxe_frame_limit_overrun,

            
            		      max_cck->rxe_frame_limit_overrun);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "sent_ack_cnt:",

            
            		      le32_to_cpu(cck->sent_ack_cnt), accum_cck->sent_ack_cnt,

            
            		      delta_cck->sent_ack_cnt, max_cck->sent_ack_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "sent_cts_cnt:",

            
            		      le32_to_cpu(cck->sent_cts_cnt), accum_cck->sent_cts_cnt,

            
            		      delta_cck->sent_cts_cnt, max_cck->sent_cts_cnt);


            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "%-32s     current"

            
            		      "acumulative       delta         max\n",

            
            		      "Statistics_Rx - GENERAL:");

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "bogus_cts:",

            
            		      le32_to_cpu(general->bogus_cts), accum_general->bogus_cts,

            
            		      delta_general->bogus_cts, max_general->bogus_cts);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "bogus_ack:",

            
            		      le32_to_cpu(general->bogus_ack), accum_general->bogus_ack,

            
            		      delta_general->bogus_ack, max_general->bogus_ack);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "non_bssid_frames:",

            
            		      le32_to_cpu(general->non_bssid_frames),

            
            		      accum_general->non_bssid_frames,

            
            		      delta_general->non_bssid_frames,

            
            		      max_general->non_bssid_frames);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "filtered_frames:",

            
            		      le32_to_cpu(general->filtered_frames),

            
            		      accum_general->filtered_frames,

            
            		      delta_general->filtered_frames,

            
            		      max_general->filtered_frames);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n",

            
            		      "non_channel_beacons:",

            
            		      le32_to_cpu(general->non_channel_beacons),

            
            		      accum_general->non_channel_beacons,

            
            		      delta_general->non_channel_beacons,

            
            		      max_general->non_channel_beacons);


            	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);

            
            	kfree(buf);

            
            	return ret;

            
            }


            static ssize_t

            
            il3945_ucode_tx_stats_read(struct file *file, char __user *user_buf,

            
            			   size_t count, loff_t *ppos)

            
            {

            
            	struct il_priv *il = file->private_data;

            
            	int pos = 0;

            
            	char *buf;

            
            	int bufsz = (sizeof(struct iwl39_stats_tx) * 48) + 250;

            
            	ssize_t ret;

            
            	struct iwl39_stats_tx *tx, *accum_tx, *delta_tx, *max_tx;


            	if (!il_is_alive(il))

            
            		return -EAGAIN;


            	buf = kzalloc(bufsz, GFP_KERNEL);

            
            	if (!buf) {

            
            		IL_ERR("Can not allocate Buffer\n");

            
            		return -ENOMEM;

            
            	}


            	/*

            
            	 * The statistic information display here is based on

            
            	 * the last stats notification from uCode

            
            	 * might not reflect the current uCode activity

            
            	 */

            
            	tx = &il->_3945.stats.tx;

            
            	accum_tx = &il->_3945.accum_stats.tx;

            
            	delta_tx = &il->_3945.delta_stats.tx;

            
            	max_tx = &il->_3945.max_delta.tx;

            
            	pos += il3945_stats_flag(il, buf, bufsz);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "%-32s     current"

            
            		      "acumulative       delta         max\n",

            
            		      "Statistics_Tx:");

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "preamble:",

            
            		      le32_to_cpu(tx->preamble_cnt), accum_tx->preamble_cnt,

            
            		      delta_tx->preamble_cnt, max_tx->preamble_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "rx_detected_cnt:",

            
            		      le32_to_cpu(tx->rx_detected_cnt),

            
            		      accum_tx->rx_detected_cnt, delta_tx->rx_detected_cnt,

            
            		      max_tx->rx_detected_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "bt_prio_defer_cnt:",

            
            		      le32_to_cpu(tx->bt_prio_defer_cnt),

            
            		      accum_tx->bt_prio_defer_cnt, delta_tx->bt_prio_defer_cnt,

            
            		      max_tx->bt_prio_defer_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "bt_prio_kill_cnt:",

            
            		      le32_to_cpu(tx->bt_prio_kill_cnt),

            
            		      accum_tx->bt_prio_kill_cnt, delta_tx->bt_prio_kill_cnt,

            
            		      max_tx->bt_prio_kill_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "few_bytes_cnt:",

            
            		      le32_to_cpu(tx->few_bytes_cnt), accum_tx->few_bytes_cnt,

            
            		      delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "cts_timeout:",

            
            		      le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout,

            
            		      delta_tx->cts_timeout, max_tx->cts_timeout);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "ack_timeout:",

            
            		      le32_to_cpu(tx->ack_timeout), accum_tx->ack_timeout,

            
            		      delta_tx->ack_timeout, max_tx->ack_timeout);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "expected_ack_cnt:",

            
            		      le32_to_cpu(tx->expected_ack_cnt),

            
            		      accum_tx->expected_ack_cnt, delta_tx->expected_ack_cnt,

            
            		      max_tx->expected_ack_cnt);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "actual_ack_cnt:",

            
            		      le32_to_cpu(tx->actual_ack_cnt), accum_tx->actual_ack_cnt,

            
            		      delta_tx->actual_ack_cnt, max_tx->actual_ack_cnt);


            	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);

            
            	kfree(buf);

            
            	return ret;

            
            }


            static ssize_t

            
            il3945_ucode_general_stats_read(struct file *file, char __user *user_buf,

            
            				size_t count, loff_t *ppos)

            
            {

            
            	struct il_priv *il = file->private_data;

            
            	int pos = 0;

            
            	char *buf;

            
            	int bufsz = sizeof(struct iwl39_stats_general) * 10 + 300;

            
            	ssize_t ret;

            
            	struct iwl39_stats_general *general, *accum_general;

            
            	struct iwl39_stats_general *delta_general, *max_general;

            
            	struct stats_dbg *dbg, *accum_dbg, *delta_dbg, *max_dbg;

            
            	struct iwl39_stats_div *div, *accum_div, *delta_div, *max_div;


            	if (!il_is_alive(il))

            
            		return -EAGAIN;


            	buf = kzalloc(bufsz, GFP_KERNEL);

            
            	if (!buf) {

            
            		IL_ERR("Can not allocate Buffer\n");

            
            		return -ENOMEM;

            
            	}


            	/*

            
            	 * The statistic information display here is based on

            
            	 * the last stats notification from uCode

            
            	 * might not reflect the current uCode activity

            
            	 */

            
            	general = &il->_3945.stats.general;

            
            	dbg = &il->_3945.stats.general.dbg;

            
            	div = &il->_3945.stats.general.div;

            
            	accum_general = &il->_3945.accum_stats.general;

            
            	delta_general = &il->_3945.delta_stats.general;

            
            	max_general = &il->_3945.max_delta.general;

            
            	accum_dbg = &il->_3945.accum_stats.general.dbg;

            
            	delta_dbg = &il->_3945.delta_stats.general.dbg;

            
            	max_dbg = &il->_3945.max_delta.general.dbg;

            
            	accum_div = &il->_3945.accum_stats.general.div;

            
            	delta_div = &il->_3945.delta_stats.general.div;

            
            	max_div = &il->_3945.max_delta.general.div;

            
            	pos += il3945_stats_flag(il, buf, bufsz);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "%-32s     current"

            
            		      "acumulative       delta         max\n",

            
            		      "Statistics_General:");

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "burst_check:",

            
            		      le32_to_cpu(dbg->burst_check), accum_dbg->burst_check,

            
            		      delta_dbg->burst_check, max_dbg->burst_check);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "burst_count:",

            
            		      le32_to_cpu(dbg->burst_count), accum_dbg->burst_count,

            
            		      delta_dbg->burst_count, max_dbg->burst_count);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "sleep_time:",

            
            		      le32_to_cpu(general->sleep_time),

            
            		      accum_general->sleep_time, delta_general->sleep_time,

            
            		      max_general->sleep_time);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "slots_out:",

            
            		      le32_to_cpu(general->slots_out), accum_general->slots_out,

            
            		      delta_general->slots_out, max_general->slots_out);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "slots_idle:",

            
            		      le32_to_cpu(general->slots_idle),

            
            		      accum_general->slots_idle, delta_general->slots_idle,

            
            		      max_general->slots_idle);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos, "ttl_timestamp:\t\t\t%u\n",

            
            		      le32_to_cpu(general->ttl_timestamp));

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "tx_on_a:",

            
            		      le32_to_cpu(div->tx_on_a), accum_div->tx_on_a,

            
            		      delta_div->tx_on_a, max_div->tx_on_a);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "tx_on_b:",

            
            		      le32_to_cpu(div->tx_on_b), accum_div->tx_on_b,

            
            		      delta_div->tx_on_b, max_div->tx_on_b);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "exec_time:",

            
            		      le32_to_cpu(div->exec_time), accum_div->exec_time,

            
            		      delta_div->exec_time, max_div->exec_time);

            
            	pos +=

            
            	    scnprintf(buf + pos, bufsz - pos,

            
            		      "  %-30s %10u  %10u  %10u  %10u\n", "probe_time:",

            
            		      le32_to_cpu(div->probe_time), accum_div->probe_time,

            
            		      delta_div->probe_time, max_div->probe_time);

            
            	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);

            
            	kfree(buf);

            
            	return ret;

            
            }


            const struct il_debugfs_ops il3945_debugfs_ops = {

            
            	.rx_stats_read = il3945_ucode_rx_stats_read,

            
            	.tx_stats_read = il3945_ucode_tx_stats_read,

            
            	.general_stats_read = il3945_ucode_general_stats_read,

            
            };
	/******************************************************************************
	*
	* GPL LICENSE SUMMARY
	*
	* Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of version 2 of the GNU General Public License 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,
	* USA
	*
	* The full GNU General Public License is included in this distribution
	* in the file called LICENSE.GPL.
	*
	* Contact Information:
	* Intel Linux Wireless <ilw@linux.intel.com>
	* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
	*****************************************************************************/

	#include "common.h"
	#include "3945.h"

	static int
	il3945_stats_flag(struct il_priv il, char buf, int bufsz)
	{
	int p = 0;

	p += scnprintf(buf + p, bufsz - p, "Statistics Flag(0x%X):\n",
	le32_to_cpu(il->_3945.stats.flag));
	if (le32_to_cpu(il->_3945.stats.flag) & UCODE_STATS_CLEAR_MSK)
	p += scnprintf(buf + p, bufsz - p,
	"\tStatistics have been cleared\n");
	p += scnprintf(buf + p, bufsz - p, "\tOperational Frequency: %s\n",
	(le32_to_cpu(il->_3945.stats.flag) &
	UCODE_STATS_FREQUENCY_MSK) ? "2.4 GHz" : "5.2 GHz");
	p += scnprintf(buf + p, bufsz - p, "\tTGj Narrow Band: %s\n",
	(le32_to_cpu(il->_3945.stats.flag) &
	UCODE_STATS_NARROW_BAND_MSK) ? "enabled" : "disabled");
	return p;
	}

	static ssize_t
	il3945_ucode_rx_stats_read(struct file file, char __user user_buf,
	size_t count, loff_t *ppos)
	{
	struct il_priv *il = file->private_data;
	int pos = 0;
	char *buf;
	int bufsz =
	sizeof(struct iwl39_stats_rx_phy) * 40 +
	sizeof(struct iwl39_stats_rx_non_phy) * 40 + 400;
	ssize_t ret;
	struct iwl39_stats_rx_phy ofdm, accum_ofdm, delta_ofdm, max_ofdm;
	struct iwl39_stats_rx_phy cck, accum_cck, delta_cck, max_cck;
	struct iwl39_stats_rx_non_phy general, accum_general;
	struct iwl39_stats_rx_non_phy delta_general, max_general;

	if (!il_is_alive(il))
	return -EAGAIN;

	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf) {
	IL_ERR("Can not allocate Buffer\n");
	return -ENOMEM;
	}

	/*
	* The statistic information display here is based on
	* the last stats notification from uCode
	* might not reflect the current uCode activity
	*/
	ofdm = &il->_3945.stats.rx.ofdm;
	cck = &il->_3945.stats.rx.cck;
	general = &il->_3945.stats.rx.general;
	accum_ofdm = &il->_3945.accum_stats.rx.ofdm;
	accum_cck = &il->_3945.accum_stats.rx.cck;
	accum_general = &il->_3945.accum_stats.rx.general;
	delta_ofdm = &il->_3945.delta_stats.rx.ofdm;
	delta_cck = &il->_3945.delta_stats.rx.cck;
	delta_general = &il->_3945.delta_stats.rx.general;
	max_ofdm = &il->_3945.max_delta.rx.ofdm;
	max_cck = &il->_3945.max_delta.rx.cck;
	max_general = &il->_3945.max_delta.rx.general;

	pos += il3945_stats_flag(il, buf, bufsz);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	"%-32s current"
	"acumulative delta max\n",
	"Statistics_Rx - OFDM:");
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "ina_cnt:",
	le32_to_cpu(ofdm->ina_cnt), accum_ofdm->ina_cnt,
	delta_ofdm->ina_cnt, max_ofdm->ina_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "fina_cnt:",
	le32_to_cpu(ofdm->fina_cnt), accum_ofdm->fina_cnt,
	delta_ofdm->fina_cnt, max_ofdm->fina_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "plcp_err:",
	le32_to_cpu(ofdm->plcp_err), accum_ofdm->plcp_err,
	delta_ofdm->plcp_err, max_ofdm->plcp_err);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "crc32_err:",
	le32_to_cpu(ofdm->crc32_err), accum_ofdm->crc32_err,
	delta_ofdm->crc32_err, max_ofdm->crc32_err);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "overrun_err:",
	le32_to_cpu(ofdm->overrun_err), accum_ofdm->overrun_err,
	delta_ofdm->overrun_err, max_ofdm->overrun_err);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "early_overrun_err:",
	le32_to_cpu(ofdm->early_overrun_err),
	accum_ofdm->early_overrun_err,
	delta_ofdm->early_overrun_err,
	max_ofdm->early_overrun_err);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "crc32_good:",
	le32_to_cpu(ofdm->crc32_good), accum_ofdm->crc32_good,
	delta_ofdm->crc32_good, max_ofdm->crc32_good);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "false_alarm_cnt:",
	le32_to_cpu(ofdm->false_alarm_cnt),
	accum_ofdm->false_alarm_cnt, delta_ofdm->false_alarm_cnt,
	max_ofdm->false_alarm_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "fina_sync_err_cnt:",
	le32_to_cpu(ofdm->fina_sync_err_cnt),
	accum_ofdm->fina_sync_err_cnt,
	delta_ofdm->fina_sync_err_cnt,
	max_ofdm->fina_sync_err_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "sfd_timeout:",
	le32_to_cpu(ofdm->sfd_timeout), accum_ofdm->sfd_timeout,
	delta_ofdm->sfd_timeout, max_ofdm->sfd_timeout);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "fina_timeout:",
	le32_to_cpu(ofdm->fina_timeout), accum_ofdm->fina_timeout,
	delta_ofdm->fina_timeout, max_ofdm->fina_timeout);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "unresponded_rts:",
	le32_to_cpu(ofdm->unresponded_rts),
	accum_ofdm->unresponded_rts, delta_ofdm->unresponded_rts,
	max_ofdm->unresponded_rts);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n",
	"rxe_frame_lmt_ovrun:",
	le32_to_cpu(ofdm->rxe_frame_limit_overrun),
	accum_ofdm->rxe_frame_limit_overrun,
	delta_ofdm->rxe_frame_limit_overrun,
	max_ofdm->rxe_frame_limit_overrun);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "sent_ack_cnt:",
	le32_to_cpu(ofdm->sent_ack_cnt), accum_ofdm->sent_ack_cnt,
	delta_ofdm->sent_ack_cnt, max_ofdm->sent_ack_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "sent_cts_cnt:",
	le32_to_cpu(ofdm->sent_cts_cnt), accum_ofdm->sent_cts_cnt,
	delta_ofdm->sent_cts_cnt, max_ofdm->sent_cts_cnt);

	pos +=
	scnprintf(buf + pos, bufsz - pos,
	"%-32s current"
	"acumulative delta max\n",
	"Statistics_Rx - CCK:");
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "ina_cnt:",
	le32_to_cpu(cck->ina_cnt), accum_cck->ina_cnt,
	delta_cck->ina_cnt, max_cck->ina_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "fina_cnt:",
	le32_to_cpu(cck->fina_cnt), accum_cck->fina_cnt,
	delta_cck->fina_cnt, max_cck->fina_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "plcp_err:",
	le32_to_cpu(cck->plcp_err), accum_cck->plcp_err,
	delta_cck->plcp_err, max_cck->plcp_err);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "crc32_err:",
	le32_to_cpu(cck->crc32_err), accum_cck->crc32_err,
	delta_cck->crc32_err, max_cck->crc32_err);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "overrun_err:",
	le32_to_cpu(cck->overrun_err), accum_cck->overrun_err,
	delta_cck->overrun_err, max_cck->overrun_err);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "early_overrun_err:",
	le32_to_cpu(cck->early_overrun_err),
	accum_cck->early_overrun_err,
	delta_cck->early_overrun_err, max_cck->early_overrun_err);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "crc32_good:",
	le32_to_cpu(cck->crc32_good), accum_cck->crc32_good,
	delta_cck->crc32_good, max_cck->crc32_good);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "false_alarm_cnt:",
	le32_to_cpu(cck->false_alarm_cnt),
	accum_cck->false_alarm_cnt, delta_cck->false_alarm_cnt,
	max_cck->false_alarm_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "fina_sync_err_cnt:",
	le32_to_cpu(cck->fina_sync_err_cnt),
	accum_cck->fina_sync_err_cnt,
	delta_cck->fina_sync_err_cnt, max_cck->fina_sync_err_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "sfd_timeout:",
	le32_to_cpu(cck->sfd_timeout), accum_cck->sfd_timeout,
	delta_cck->sfd_timeout, max_cck->sfd_timeout);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "fina_timeout:",
	le32_to_cpu(cck->fina_timeout), accum_cck->fina_timeout,
	delta_cck->fina_timeout, max_cck->fina_timeout);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "unresponded_rts:",
	le32_to_cpu(cck->unresponded_rts),
	accum_cck->unresponded_rts, delta_cck->unresponded_rts,
	max_cck->unresponded_rts);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n",
	"rxe_frame_lmt_ovrun:",
	le32_to_cpu(cck->rxe_frame_limit_overrun),
	accum_cck->rxe_frame_limit_overrun,
	delta_cck->rxe_frame_limit_overrun,
	max_cck->rxe_frame_limit_overrun);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "sent_ack_cnt:",
	le32_to_cpu(cck->sent_ack_cnt), accum_cck->sent_ack_cnt,
	delta_cck->sent_ack_cnt, max_cck->sent_ack_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "sent_cts_cnt:",
	le32_to_cpu(cck->sent_cts_cnt), accum_cck->sent_cts_cnt,
	delta_cck->sent_cts_cnt, max_cck->sent_cts_cnt);

	pos +=
	scnprintf(buf + pos, bufsz - pos,
	"%-32s current"
	"acumulative delta max\n",
	"Statistics_Rx - GENERAL:");
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "bogus_cts:",
	le32_to_cpu(general->bogus_cts), accum_general->bogus_cts,
	delta_general->bogus_cts, max_general->bogus_cts);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "bogus_ack:",
	le32_to_cpu(general->bogus_ack), accum_general->bogus_ack,
	delta_general->bogus_ack, max_general->bogus_ack);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "non_bssid_frames:",
	le32_to_cpu(general->non_bssid_frames),
	accum_general->non_bssid_frames,
	delta_general->non_bssid_frames,
	max_general->non_bssid_frames);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "filtered_frames:",
	le32_to_cpu(general->filtered_frames),
	accum_general->filtered_frames,
	delta_general->filtered_frames,
	max_general->filtered_frames);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n",
	"non_channel_beacons:",
	le32_to_cpu(general->non_channel_beacons),
	accum_general->non_channel_beacons,
	delta_general->non_channel_beacons,
	max_general->non_channel_beacons);

	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
	}

	static ssize_t
	il3945_ucode_tx_stats_read(struct file file, char __user user_buf,
	size_t count, loff_t *ppos)
	{
	struct il_priv *il = file->private_data;
	int pos = 0;
	char *buf;
	int bufsz = (sizeof(struct iwl39_stats_tx) * 48) + 250;
	ssize_t ret;
	struct iwl39_stats_tx tx, accum_tx, delta_tx, max_tx;

	if (!il_is_alive(il))
	return -EAGAIN;

	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf) {
	IL_ERR("Can not allocate Buffer\n");
	return -ENOMEM;
	}

	/*
	* The statistic information display here is based on
	* the last stats notification from uCode
	* might not reflect the current uCode activity
	*/
	tx = &il->_3945.stats.tx;
	accum_tx = &il->_3945.accum_stats.tx;
	delta_tx = &il->_3945.delta_stats.tx;
	max_tx = &il->_3945.max_delta.tx;
	pos += il3945_stats_flag(il, buf, bufsz);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	"%-32s current"
	"acumulative delta max\n",
	"Statistics_Tx:");
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "preamble:",
	le32_to_cpu(tx->preamble_cnt), accum_tx->preamble_cnt,
	delta_tx->preamble_cnt, max_tx->preamble_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "rx_detected_cnt:",
	le32_to_cpu(tx->rx_detected_cnt),
	accum_tx->rx_detected_cnt, delta_tx->rx_detected_cnt,
	max_tx->rx_detected_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "bt_prio_defer_cnt:",
	le32_to_cpu(tx->bt_prio_defer_cnt),
	accum_tx->bt_prio_defer_cnt, delta_tx->bt_prio_defer_cnt,
	max_tx->bt_prio_defer_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "bt_prio_kill_cnt:",
	le32_to_cpu(tx->bt_prio_kill_cnt),
	accum_tx->bt_prio_kill_cnt, delta_tx->bt_prio_kill_cnt,
	max_tx->bt_prio_kill_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "few_bytes_cnt:",
	le32_to_cpu(tx->few_bytes_cnt), accum_tx->few_bytes_cnt,
	delta_tx->few_bytes_cnt, max_tx->few_bytes_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "cts_timeout:",
	le32_to_cpu(tx->cts_timeout), accum_tx->cts_timeout,
	delta_tx->cts_timeout, max_tx->cts_timeout);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "ack_timeout:",
	le32_to_cpu(tx->ack_timeout), accum_tx->ack_timeout,
	delta_tx->ack_timeout, max_tx->ack_timeout);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "expected_ack_cnt:",
	le32_to_cpu(tx->expected_ack_cnt),
	accum_tx->expected_ack_cnt, delta_tx->expected_ack_cnt,
	max_tx->expected_ack_cnt);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "actual_ack_cnt:",
	le32_to_cpu(tx->actual_ack_cnt), accum_tx->actual_ack_cnt,
	delta_tx->actual_ack_cnt, max_tx->actual_ack_cnt);

	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
	}

	static ssize_t
	il3945_ucode_general_stats_read(struct file file, char __user user_buf,
	size_t count, loff_t *ppos)
	{
	struct il_priv *il = file->private_data;
	int pos = 0;
	char *buf;
	int bufsz = sizeof(struct iwl39_stats_general) * 10 + 300;
	ssize_t ret;
	struct iwl39_stats_general general, accum_general;
	struct iwl39_stats_general delta_general, max_general;
	struct stats_dbg dbg, accum_dbg, delta_dbg, max_dbg;
	struct iwl39_stats_div div, accum_div, delta_div, max_div;

	if (!il_is_alive(il))
	return -EAGAIN;

	buf = kzalloc(bufsz, GFP_KERNEL);
	if (!buf) {
	IL_ERR("Can not allocate Buffer\n");
	return -ENOMEM;
	}

	/*
	* The statistic information display here is based on
	* the last stats notification from uCode
	* might not reflect the current uCode activity
	*/
	general = &il->_3945.stats.general;
	dbg = &il->_3945.stats.general.dbg;
	div = &il->_3945.stats.general.div;
	accum_general = &il->_3945.accum_stats.general;
	delta_general = &il->_3945.delta_stats.general;
	max_general = &il->_3945.max_delta.general;
	accum_dbg = &il->_3945.accum_stats.general.dbg;
	delta_dbg = &il->_3945.delta_stats.general.dbg;
	max_dbg = &il->_3945.max_delta.general.dbg;
	accum_div = &il->_3945.accum_stats.general.div;
	delta_div = &il->_3945.delta_stats.general.div;
	max_div = &il->_3945.max_delta.general.div;
	pos += il3945_stats_flag(il, buf, bufsz);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	"%-32s current"
	"acumulative delta max\n",
	"Statistics_General:");
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "burst_check:",
	le32_to_cpu(dbg->burst_check), accum_dbg->burst_check,
	delta_dbg->burst_check, max_dbg->burst_check);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "burst_count:",
	le32_to_cpu(dbg->burst_count), accum_dbg->burst_count,
	delta_dbg->burst_count, max_dbg->burst_count);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "sleep_time:",
	le32_to_cpu(general->sleep_time),
	accum_general->sleep_time, delta_general->sleep_time,
	max_general->sleep_time);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "slots_out:",
	le32_to_cpu(general->slots_out), accum_general->slots_out,
	delta_general->slots_out, max_general->slots_out);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "slots_idle:",
	le32_to_cpu(general->slots_idle),
	accum_general->slots_idle, delta_general->slots_idle,
	max_general->slots_idle);
	pos +=
	scnprintf(buf + pos, bufsz - pos, "ttl_timestamp:\t\t\t%u\n",
	le32_to_cpu(general->ttl_timestamp));
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "tx_on_a:",
	le32_to_cpu(div->tx_on_a), accum_div->tx_on_a,
	delta_div->tx_on_a, max_div->tx_on_a);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "tx_on_b:",
	le32_to_cpu(div->tx_on_b), accum_div->tx_on_b,
	delta_div->tx_on_b, max_div->tx_on_b);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "exec_time:",
	le32_to_cpu(div->exec_time), accum_div->exec_time,
	delta_div->exec_time, max_div->exec_time);
	pos +=
	scnprintf(buf + pos, bufsz - pos,
	" %-30s %10u %10u %10u %10u\n", "probe_time:",
	le32_to_cpu(div->probe_time), accum_div->probe_time,
	delta_div->probe_time, max_div->probe_time);
	ret = simple_read_from_buffer(user_buf, count, ppos, buf, pos);
	kfree(buf);
	return ret;
	}

	const struct il_debugfs_ops il3945_debugfs_ops = {
	.rx_stats_read = il3945_ucode_rx_stats_read,
	.tx_stats_read = il3945_ucode_tx_stats_read,
	.general_stats_read = il3945_ucode_general_stats_read,
	};