drivers/net/wireless/mwifiex/debugfs.c

   1 /*
   2  * Marvell Wireless LAN device driver: debugfs
   3  *
   4  * Copyright (C) 2011-2014, Marvell International Ltd.
   5  *
   6  * This software file (the "File") is distributed by Marvell International
   7  * Ltd. under the terms of the GNU General Public License Version 2, June 1991
   8  * (the "License").  You may use, redistribute and/or modify this File in
   9  * accordance with the terms and conditions of the License, a copy of which
  10  * is available by writing to the Free Software Foundation, Inc.,
  11  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
  12  * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
  13  *
  14  * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
  16  * ARE EXPRESSLY DISCLAIMED.  The License provides additional details about
  17  * this warranty disclaimer.
  18  */
  19
  20 #include <linux/debugfs.h>
  21
  22 #include "main.h"
  23 #include "11n.h"
  24
  25
  26 static struct dentry *mwifiex_dfs_dir;
  27
  28 static char *bss_modes[] = {
  29         "UNSPECIFIED",
  30         "ADHOC",
  31         "STATION",
  32         "AP",
  33         "AP_VLAN",
  34         "WDS",
  35         "MONITOR",
  36         "MESH_POINT",
  37         "P2P_CLIENT",
  38         "P2P_GO",
  39         "P2P_DEVICE",
  40 };
  41
  42 /* size/addr for mwifiex_debug_info */
  43 #define item_size(n)            (FIELD_SIZEOF(struct mwifiex_debug_info, n))
  44 #define item_addr(n)            (offsetof(struct mwifiex_debug_info, n))
  45
  46 /* size/addr for struct mwifiex_adapter */
  47 #define adapter_item_size(n)    (FIELD_SIZEOF(struct mwifiex_adapter, n))
  48 #define adapter_item_addr(n)    (offsetof(struct mwifiex_adapter, n))
  49
  50 struct mwifiex_debug_data {
  51         char name[32];          /* variable/array name */
  52         u32 size;               /* size of the variable/array */
  53         size_t addr;            /* address of the variable/array */
  54         int num;                /* number of variables in an array */
  55 };
  56
  57 static struct mwifiex_debug_data items[] = {
  58         {"int_counter", item_size(int_counter),
  59          item_addr(int_counter), 1},
  60         {"wmm_ac_vo", item_size(packets_out[WMM_AC_VO]),
  61          item_addr(packets_out[WMM_AC_VO]), 1},
  62         {"wmm_ac_vi", item_size(packets_out[WMM_AC_VI]),
  63          item_addr(packets_out[WMM_AC_VI]), 1},
  64         {"wmm_ac_be", item_size(packets_out[WMM_AC_BE]),
  65          item_addr(packets_out[WMM_AC_BE]), 1},
  66         {"wmm_ac_bk", item_size(packets_out[WMM_AC_BK]),
  67          item_addr(packets_out[WMM_AC_BK]), 1},
  68         {"tx_buf_size", item_size(tx_buf_size),
  69          item_addr(tx_buf_size), 1},
  70         {"curr_tx_buf_size", item_size(curr_tx_buf_size),
  71          item_addr(curr_tx_buf_size), 1},
  72         {"ps_mode", item_size(ps_mode),
  73          item_addr(ps_mode), 1},
  74         {"ps_state", item_size(ps_state),
  75          item_addr(ps_state), 1},
  76         {"is_deep_sleep", item_size(is_deep_sleep),
  77          item_addr(is_deep_sleep), 1},
  78         {"wakeup_dev_req", item_size(pm_wakeup_card_req),
  79          item_addr(pm_wakeup_card_req), 1},
  80         {"wakeup_tries", item_size(pm_wakeup_fw_try),
  81          item_addr(pm_wakeup_fw_try), 1},
  82         {"hs_configured", item_size(is_hs_configured),
  83          item_addr(is_hs_configured), 1},
  84         {"hs_activated", item_size(hs_activated),
  85          item_addr(hs_activated), 1},
  86         {"num_tx_timeout", item_size(num_tx_timeout),
  87          item_addr(num_tx_timeout), 1},
  88         {"is_cmd_timedout", item_size(is_cmd_timedout),
  89          item_addr(is_cmd_timedout), 1},
  90         {"timeout_cmd_id", item_size(timeout_cmd_id),
  91          item_addr(timeout_cmd_id), 1},
  92         {"timeout_cmd_act", item_size(timeout_cmd_act),
  93          item_addr(timeout_cmd_act), 1},
  94         {"last_cmd_id", item_size(last_cmd_id),
  95          item_addr(last_cmd_id), DBG_CMD_NUM},
  96         {"last_cmd_act", item_size(last_cmd_act),
  97          item_addr(last_cmd_act), DBG_CMD_NUM},
  98         {"last_cmd_index", item_size(last_cmd_index),
  99          item_addr(last_cmd_index), 1},
 100         {"last_cmd_resp_id", item_size(last_cmd_resp_id),
 101          item_addr(last_cmd_resp_id), DBG_CMD_NUM},
 102         {"last_cmd_resp_index", item_size(last_cmd_resp_index),
 103          item_addr(last_cmd_resp_index), 1},
 104         {"last_event", item_size(last_event),
 105          item_addr(last_event), DBG_CMD_NUM},
 106         {"last_event_index", item_size(last_event_index),
 107          item_addr(last_event_index), 1},
 108         {"num_cmd_h2c_fail", item_size(num_cmd_host_to_card_failure),
 109          item_addr(num_cmd_host_to_card_failure), 1},
 110         {"num_cmd_sleep_cfm_fail",
 111          item_size(num_cmd_sleep_cfm_host_to_card_failure),
 112          item_addr(num_cmd_sleep_cfm_host_to_card_failure), 1},
 113         {"num_tx_h2c_fail", item_size(num_tx_host_to_card_failure),
 114          item_addr(num_tx_host_to_card_failure), 1},
 115         {"num_evt_deauth", item_size(num_event_deauth),
 116          item_addr(num_event_deauth), 1},
 117         {"num_evt_disassoc", item_size(num_event_disassoc),
 118          item_addr(num_event_disassoc), 1},
 119         {"num_evt_link_lost", item_size(num_event_link_lost),
 120          item_addr(num_event_link_lost), 1},
 121         {"num_cmd_deauth", item_size(num_cmd_deauth),
 122          item_addr(num_cmd_deauth), 1},
 123         {"num_cmd_assoc_ok", item_size(num_cmd_assoc_success),
 124          item_addr(num_cmd_assoc_success), 1},
 125         {"num_cmd_assoc_fail", item_size(num_cmd_assoc_failure),
 126          item_addr(num_cmd_assoc_failure), 1},
 127         {"cmd_sent", item_size(cmd_sent),
 128          item_addr(cmd_sent), 1},
 129         {"data_sent", item_size(data_sent),
 130          item_addr(data_sent), 1},
 131         {"cmd_resp_received", item_size(cmd_resp_received),
 132          item_addr(cmd_resp_received), 1},
 133         {"event_received", item_size(event_received),
 134          item_addr(event_received), 1},
 135
 136         /* variables defined in struct mwifiex_adapter */
 137         {"cmd_pending", adapter_item_size(cmd_pending),
 138          adapter_item_addr(cmd_pending), 1},
 139         {"tx_pending", adapter_item_size(tx_pending),
 140          adapter_item_addr(tx_pending), 1},
 141         {"rx_pending", adapter_item_size(rx_pending),
 142          adapter_item_addr(rx_pending), 1},
 143 };
 144
 145 static int num_of_items = ARRAY_SIZE(items);
 146
 147 /*
 148  * Proc info file read handler.
 149  *
 150  * This function is called when the 'info' file is opened for reading.
 151  * It prints the following driver related information -
 152  *      - Driver name
 153  *      - Driver version
 154  *      - Driver extended version
 155  *      - Interface name
 156  *      - BSS mode
 157  *      - Media state (connected or disconnected)
 158  *      - MAC address
 159  *      - Total number of Tx bytes
 160  *      - Total number of Rx bytes
 161  *      - Total number of Tx packets
 162  *      - Total number of Rx packets
 163  *      - Total number of dropped Tx packets
 164  *      - Total number of dropped Rx packets
 165  *      - Total number of corrupted Tx packets
 166  *      - Total number of corrupted Rx packets
 167  *      - Carrier status (on or off)
 168  *      - Tx queue status (started or stopped)
 169  *
 170  * For STA mode drivers, it also prints the following extra -
 171  *      - ESSID
 172  *      - BSSID
 173  *      - Channel
 174  *      - Region code
 175  *      - Multicast count
 176  *      - Multicast addresses
 177  */
 178 static ssize_t
 179 mwifiex_info_read(struct file *file, char __user *ubuf,
 180                   size_t count, loff_t *ppos)
 181 {
 182         struct mwifiex_private *priv =
 183                 (struct mwifiex_private *) file->private_data;
 184         struct net_device *netdev = priv->netdev;
 185         struct netdev_hw_addr *ha;
 186         struct netdev_queue *txq;
 187         unsigned long page = get_zeroed_page(GFP_KERNEL);
 188         char *p = (char *) page, fmt[64];
 189         struct mwifiex_bss_info info;
 190         ssize_t ret;
 191         int i = 0;
 192
 193         if (!p)
 194                 return -ENOMEM;
 195
 196         memset(&info, 0, sizeof(info));
 197         ret = mwifiex_get_bss_info(priv, &info);
 198         if (ret)
 199                 goto free_and_exit;
 200
 201         mwifiex_drv_get_driver_version(priv->adapter, fmt, sizeof(fmt) - 1);
 202
 203         if (!priv->version_str[0])
 204                 mwifiex_get_ver_ext(priv);
 205
 206         p += sprintf(p, "driver_name = " "\"mwifiex\"\n");
 207         p += sprintf(p, "driver_version = %s", fmt);
 208         p += sprintf(p, "\nverext = %s", priv->version_str);
 209         p += sprintf(p, "\ninterface_name=\"%s\"\n", netdev->name);
 210
 211         if (info.bss_mode >= ARRAY_SIZE(bss_modes))
 212                 p += sprintf(p, "bss_mode=\"%d\"\n", info.bss_mode);
 213         else
 214                 p += sprintf(p, "bss_mode=\"%s\"\n", bss_modes[info.bss_mode]);
 215
 216         p += sprintf(p, "media_state=\"%s\"\n",
 217                      (!priv->media_connected ? "Disconnected" : "Connected"));
 218         p += sprintf(p, "mac_address=\"%pM\"\n", netdev->dev_addr);
 219
 220         if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) {
 221                 p += sprintf(p, "multicast_count=\"%d\"\n",
 222                              netdev_mc_count(netdev));
 223                 p += sprintf(p, "essid=\"%s\"\n", info.ssid.ssid);
 224                 p += sprintf(p, "bssid=\"%pM\"\n", info.bssid);
 225                 p += sprintf(p, "channel=\"%d\"\n", (int) info.bss_chan);
 226                 p += sprintf(p, "country_code = \"%s\"\n", info.country_code);
 227
 228                 netdev_for_each_mc_addr(ha, netdev)
 229                         p += sprintf(p, "multicast_address[%d]=\"%pM\"\n",
 230                                         i++, ha->addr);
 231         }
 232
 233         p += sprintf(p, "num_tx_bytes = %lu\n", priv->stats.tx_bytes);
 234         p += sprintf(p, "num_rx_bytes = %lu\n", priv->stats.rx_bytes);
 235         p += sprintf(p, "num_tx_pkts = %lu\n", priv->stats.tx_packets);
 236         p += sprintf(p, "num_rx_pkts = %lu\n", priv->stats.rx_packets);
 237         p += sprintf(p, "num_tx_pkts_dropped = %lu\n", priv->stats.tx_dropped);
 238         p += sprintf(p, "num_rx_pkts_dropped = %lu\n", priv->stats.rx_dropped);
 239         p += sprintf(p, "num_tx_pkts_err = %lu\n", priv->stats.tx_errors);
 240         p += sprintf(p, "num_rx_pkts_err = %lu\n", priv->stats.rx_errors);
 241         p += sprintf(p, "carrier %s\n", ((netif_carrier_ok(priv->netdev))
 242                                          ? "on" : "off"));
 243         p += sprintf(p, "tx queue");
 244         for (i = 0; i < netdev->num_tx_queues; i++) {
 245                 txq = netdev_get_tx_queue(netdev, i);
 246                 p += sprintf(p, " %d:%s", i, netif_tx_queue_stopped(txq) ?
 247                              "stopped" : "started");
 248         }
 249         p += sprintf(p, "\n");
 250
 251         ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
 252                                       (unsigned long) p - page);
 253
 254 free_and_exit:
 255         free_page(page);
 256         return ret;
 257 }
 258
 259 /*
 260  * Proc firmware dump read handler.
 261  *
 262  * This function is called when the 'fw_dump' file is opened for
 263  * reading.
 264  * This function dumps firmware memory in different files
 265  * (ex. DTCM, ITCM, SQRAM etc.) based on the the segments for
 266  * debugging.
 267  */
 268 static ssize_t
 269 mwifiex_fw_dump_read(struct file *file, char __user *ubuf,
 270                      size_t count, loff_t *ppos)
 271 {
 272         struct mwifiex_private *priv = file->private_data;
 273
 274         if (!priv->adapter->if_ops.fw_dump)
 275                 return -EIO;
 276
 277         priv->adapter->if_ops.fw_dump(priv->adapter);
 278
 279         return 0;
 280 }
 281
 282 /*
 283  * Proc getlog file read handler.
 284  *
 285  * This function is called when the 'getlog' file is opened for reading
 286  * It prints the following log information -
 287  *      - Number of multicast Tx frames
 288  *      - Number of failed packets
 289  *      - Number of Tx retries
 290  *      - Number of multicast Tx retries
 291  *      - Number of duplicate frames
 292  *      - Number of RTS successes
 293  *      - Number of RTS failures
 294  *      - Number of ACK failures
 295  *      - Number of fragmented Rx frames
 296  *      - Number of multicast Rx frames
 297  *      - Number of FCS errors
 298  *      - Number of Tx frames
 299  *      - WEP ICV error counts
 300  *      - Number of received beacons
 301  *      - Number of missed beacons
 302  */
 303 static ssize_t
 304 mwifiex_getlog_read(struct file *file, char __user *ubuf,
 305                     size_t count, loff_t *ppos)
 306 {
 307         struct mwifiex_private *priv =
 308                 (struct mwifiex_private *) file->private_data;
 309         unsigned long page = get_zeroed_page(GFP_KERNEL);
 310         char *p = (char *) page;
 311         ssize_t ret;
 312         struct mwifiex_ds_get_stats stats;
 313
 314         if (!p)
 315                 return -ENOMEM;
 316
 317         memset(&stats, 0, sizeof(stats));
 318         ret = mwifiex_get_stats_info(priv, &stats);
 319         if (ret)
 320                 goto free_and_exit;
 321
 322         p += sprintf(p, "\n"
 323                      "mcasttxframe     %u\n"
 324                      "failed           %u\n"
 325                      "retry            %u\n"
 326                      "multiretry       %u\n"
 327                      "framedup         %u\n"
 328                      "rtssuccess       %u\n"
 329                      "rtsfailure       %u\n"
 330                      "ackfailure       %u\n"
 331                      "rxfrag           %u\n"
 332                      "mcastrxframe     %u\n"
 333                      "fcserror         %u\n"
 334                      "txframe          %u\n"
 335                      "wepicverrcnt-1   %u\n"
 336                      "wepicverrcnt-2   %u\n"
 337                      "wepicverrcnt-3   %u\n"
 338                      "wepicverrcnt-4   %u\n"
 339                      "bcn_rcv_cnt   %u\n"
 340                      "bcn_miss_cnt   %u\n",
 341                      stats.mcast_tx_frame,
 342                      stats.failed,
 343                      stats.retry,
 344                      stats.multi_retry,
 345                      stats.frame_dup,
 346                      stats.rts_success,
 347                      stats.rts_failure,
 348                      stats.ack_failure,
 349                      stats.rx_frag,
 350                      stats.mcast_rx_frame,
 351                      stats.fcs_error,
 352                      stats.tx_frame,
 353                      stats.wep_icv_error[0],
 354                      stats.wep_icv_error[1],
 355                      stats.wep_icv_error[2],
 356                      stats.wep_icv_error[3],
 357                      stats.bcn_rcv_cnt,
 358                      stats.bcn_miss_cnt);
 359
 360
 361         ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
 362                                       (unsigned long) p - page);
 363
 364 free_and_exit:
 365         free_page(page);
 366         return ret;
 367 }
 368
 369 /* Sysfs histogram file read handler.
 370  *
 371  * This function is called when the 'histogram' file is opened for reading
 372  * It prints the following histogram information -
 373  *      - Number of histogram samples
 374  *      - Receive packet number of each rx_rate
 375  *      - Receive packet number of each snr
 376  *      - Receive packet number of each nosie_flr
 377  *      - Receive packet number of each signal streath
 378  */
 379 static ssize_t
 380 mwifiex_histogram_read(struct file *file, char __user *ubuf,
 381                        size_t count, loff_t *ppos)
 382 {
 383         struct mwifiex_private *priv =
 384                 (struct mwifiex_private *)file->private_data;
 385         ssize_t ret;
 386         struct mwifiex_histogram_data *phist_data;
 387         int i, value;
 388         unsigned long page = get_zeroed_page(GFP_KERNEL);
 389         char *p = (char *)page;
 390
 391         if (!p)
 392                 return -ENOMEM;
 393
 394         if (!priv || !priv->hist_data)
 395                 return -EFAULT;
 396         phist_data = priv->hist_data;
 397
 398         p += sprintf(p, "\n"
 399                      "total samples = %d\n",
 400                      atomic_read(&phist_data->num_samples));
 401
 402         p += sprintf(p, "rx rates (in Mbps): 0=1M   1=2M");
 403         p += sprintf(p, "2=5.5M  3=11M   4=6M   5=9M  6=12M\n");
 404         p += sprintf(p, "7=18M  8=24M  9=36M  10=48M  11=54M");
 405         p += sprintf(p, "12-27=MCS0-15(BW20) 28-43=MCS0-15(BW40)\n");
 406
 407         if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) {
 408                 p += sprintf(p, "44-53=MCS0-9(VHT:BW20)");
 409                 p += sprintf(p, "54-63=MCS0-9(VHT:BW40)");
 410                 p += sprintf(p, "64-73=MCS0-9(VHT:BW80)\n\n");
 411         } else {
 412                 p += sprintf(p, "\n");
 413         }
 414
 415         for (i = 0; i < MWIFIEX_MAX_RX_RATES; i++) {
 416                 value = atomic_read(&phist_data->rx_rate[i]);
 417                 if (value)
 418                         p += sprintf(p, "rx_rate[%02d] = %d\n", i, value);
 419         }
 420
 421         if (ISSUPP_11ACENABLED(priv->adapter->fw_cap_info)) {
 422                 for (i = MWIFIEX_MAX_RX_RATES; i < MWIFIEX_MAX_AC_RX_RATES;
 423                      i++) {
 424                         value = atomic_read(&phist_data->rx_rate[i]);
 425                         if (value)
 426                                 p += sprintf(p, "rx_rate[%02d] = %d\n",
 427                                            i, value);
 428                 }
 429         }
 430
 431         for (i = 0; i < MWIFIEX_MAX_SNR; i++) {
 432                 value =  atomic_read(&phist_data->snr[i]);
 433                 if (value)
 434                         p += sprintf(p, "snr[%02ddB] = %d\n", i, value);
 435         }
 436         for (i = 0; i < MWIFIEX_MAX_NOISE_FLR; i++) {
 437                 value = atomic_read(&phist_data->noise_flr[i]);
 438                 if (value)
 439                         p += sprintf(p, "noise_flr[-%02ddBm] = %d\n",
 440                                 (int)(i-128), value);
 441         }
 442         for (i = 0; i < MWIFIEX_MAX_SIG_STRENGTH; i++) {
 443                 value = atomic_read(&phist_data->sig_str[i]);
 444                 if (value)
 445                         p += sprintf(p, "sig_strength[-%02ddBm] = %d\n",
 446                                 i, value);
 447         }
 448
 449         ret = simple_read_from_buffer(ubuf, count, ppos, (char *)page,
 450                                       (unsigned long)p - page);
 451
 452         return ret;
 453 }
 454
 455 static ssize_t
 456 mwifiex_histogram_write(struct file *file, const char __user *ubuf,
 457                         size_t count, loff_t *ppos)
 458 {
 459         struct mwifiex_private *priv = (void *)file->private_data;
 460
 461         if (priv && priv->hist_data)
 462                 mwifiex_hist_data_reset(priv);
 463         return 0;
 464 }
 465
 466 static struct mwifiex_debug_info info;
 467
 468 /*
 469  * Proc debug file read handler.
 470  *
 471  * This function is called when the 'debug' file is opened for reading
 472  * It prints the following log information -
 473  *      - Interrupt count
 474  *      - WMM AC VO packets count
 475  *      - WMM AC VI packets count
 476  *      - WMM AC BE packets count
 477  *      - WMM AC BK packets count
 478  *      - Maximum Tx buffer size
 479  *      - Tx buffer size
 480  *      - Current Tx buffer size
 481  *      - Power Save mode
 482  *      - Power Save state
 483  *      - Deep Sleep status
 484  *      - Device wakeup required status
 485  *      - Number of wakeup tries
 486  *      - Host Sleep configured status
 487  *      - Host Sleep activated status
 488  *      - Number of Tx timeouts
 489  *      - Number of command timeouts
 490  *      - Last timed out command ID
 491  *      - Last timed out command action
 492  *      - Last command ID
 493  *      - Last command action
 494  *      - Last command index
 495  *      - Last command response ID
 496  *      - Last command response index
 497  *      - Last event
 498  *      - Last event index
 499  *      - Number of host to card command failures
 500  *      - Number of sleep confirm command failures
 501  *      - Number of host to card data failure
 502  *      - Number of deauthentication events
 503  *      - Number of disassociation events
 504  *      - Number of link lost events
 505  *      - Number of deauthentication commands
 506  *      - Number of association success commands
 507  *      - Number of association failure commands
 508  *      - Number of commands sent
 509  *      - Number of data packets sent
 510  *      - Number of command responses received
 511  *      - Number of events received
 512  *      - Tx BA stream table (TID, RA)
 513  *      - Rx reorder table (TID, TA, Start window, Window size, Buffer)
 514  */
 515 static ssize_t
 516 mwifiex_debug_read(struct file *file, char __user *ubuf,
 517                    size_t count, loff_t *ppos)
 518 {
 519         struct mwifiex_private *priv =
 520                 (struct mwifiex_private *) file->private_data;
 521         struct mwifiex_debug_data *d = &items[0];
 522         unsigned long page = get_zeroed_page(GFP_KERNEL);
 523         char *p = (char *) page;
 524         ssize_t ret;
 525         size_t size, addr;
 526         long val;
 527         int i, j;
 528
 529         if (!p)
 530                 return -ENOMEM;
 531
 532         ret = mwifiex_get_debug_info(priv, &info);
 533         if (ret)
 534                 goto free_and_exit;
 535
 536         for (i = 0; i < num_of_items; i++) {
 537                 p += sprintf(p, "%s=", d[i].name);
 538
 539                 size = d[i].size / d[i].num;
 540
 541                 if (i < (num_of_items - 3))
 542                         addr = d[i].addr + (size_t) &info;
 543                 else /* The last 3 items are struct mwifiex_adapter variables */
 544                         addr = d[i].addr + (size_t) priv->adapter;
 545
 546                 for (j = 0; j < d[i].num; j++) {
 547                         switch (size) {
 548                         case 1:
 549                                 val = *((u8 *) addr);
 550                                 break;
 551                         case 2:
 552                                 val = *((u16 *) addr);
 553                                 break;
 554                         case 4:
 555                                 val = *((u32 *) addr);
 556                                 break;
 557                         case 8:
 558                                 val = *((long long *) addr);
 559                                 break;
 560                         default:
 561                                 val = -1;
 562                                 break;
 563                         }
 564
 565                         p += sprintf(p, "%#lx ", val);
 566                         addr += size;
 567                 }
 568
 569                 p += sprintf(p, "\n");
 570         }
 571
 572         if (info.tx_tbl_num) {
 573                 p += sprintf(p, "Tx BA stream table:\n");
 574                 for (i = 0; i < info.tx_tbl_num; i++)
 575                         p += sprintf(p, "tid = %d, ra = %pM\n",
 576                                      info.tx_tbl[i].tid, info.tx_tbl[i].ra);
 577         }
 578
 579         if (info.rx_tbl_num) {
 580                 p += sprintf(p, "Rx reorder table:\n");
 581                 for (i = 0; i < info.rx_tbl_num; i++) {
 582                         p += sprintf(p, "tid = %d, ta = %pM, "
 583                                      "start_win = %d, "
 584                                      "win_size = %d, buffer: ",
 585                                      info.rx_tbl[i].tid,
 586                                      info.rx_tbl[i].ta,
 587                                      info.rx_tbl[i].start_win,
 588                                      info.rx_tbl[i].win_size);
 589
 590                         for (j = 0; j < info.rx_tbl[i].win_size; j++)
 591                                 p += sprintf(p, "%c ",
 592                                              info.rx_tbl[i].buffer[j] ?
 593                                              '1' : '0');
 594
 595                         p += sprintf(p, "\n");
 596                 }
 597         }
 598
 599         if (info.tdls_peer_num) {
 600                 p += sprintf(p, "TDLS peer table:\n");
 601                 for (i = 0; i < info.tdls_peer_num; i++) {
 602                         p += sprintf(p, "peer = %pM",
 603                                      info.tdls_list[i].peer_addr);
 604                         p += sprintf(p, "\n");
 605                 }
 606         }
 607
 608         ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
 609                                       (unsigned long) p - page);
 610
 611 free_and_exit:
 612         free_page(page);
 613         return ret;
 614 }
 615
 616 static u32 saved_reg_type, saved_reg_offset, saved_reg_value;
 617
 618 /*
 619  * Proc regrdwr file write handler.
 620  *
 621  * This function is called when the 'regrdwr' file is opened for writing
 622  *
 623  * This function can be used to write to a register.
 624  */
 625 static ssize_t
 626 mwifiex_regrdwr_write(struct file *file,
 627                       const char __user *ubuf, size_t count, loff_t *ppos)
 628 {
 629         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 630         char *buf = (char *) addr;
 631         size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);
 632         int ret;
 633         u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX;
 634
 635         if (!buf)
 636                 return -ENOMEM;
 637
 638
 639         if (copy_from_user(buf, ubuf, buf_size)) {
 640                 ret = -EFAULT;
 641                 goto done;
 642         }
 643
 644         sscanf(buf, "%u %x %x", &reg_type, &reg_offset, &reg_value);
 645
 646         if (reg_type == 0 || reg_offset == 0) {
 647                 ret = -EINVAL;
 648                 goto done;
 649         } else {
 650                 saved_reg_type = reg_type;
 651                 saved_reg_offset = reg_offset;
 652                 saved_reg_value = reg_value;
 653                 ret = count;
 654         }
 655 done:
 656         free_page(addr);
 657         return ret;
 658 }
 659
 660 /*
 661  * Proc regrdwr file read handler.
 662  *
 663  * This function is called when the 'regrdwr' file is opened for reading
 664  *
 665  * This function can be used to read from a register.
 666  */
 667 static ssize_t
 668 mwifiex_regrdwr_read(struct file *file, char __user *ubuf,
 669                      size_t count, loff_t *ppos)
 670 {
 671         struct mwifiex_private *priv =
 672                 (struct mwifiex_private *) file->private_data;
 673         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 674         char *buf = (char *) addr;
 675         int pos = 0, ret = 0;
 676         u32 reg_value;
 677
 678         if (!buf)
 679                 return -ENOMEM;
 680
 681         if (!saved_reg_type) {
 682                 /* No command has been given */
 683                 pos += snprintf(buf, PAGE_SIZE, "0");
 684                 goto done;
 685         }
 686         /* Set command has been given */
 687         if (saved_reg_value != UINT_MAX) {
 688                 ret = mwifiex_reg_write(priv, saved_reg_type, saved_reg_offset,
 689                                         saved_reg_value);
 690
 691                 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n",
 692                                 saved_reg_type, saved_reg_offset,
 693                                 saved_reg_value);
 694
 695                 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
 696
 697                 goto done;
 698         }
 699         /* Get command has been given */
 700         ret = mwifiex_reg_read(priv, saved_reg_type,
 701                                saved_reg_offset, &reg_value);
 702         if (ret) {
 703                 ret = -EINVAL;
 704                 goto done;
 705         }
 706
 707         pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", saved_reg_type,
 708                         saved_reg_offset, reg_value);
 709
 710         ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
 711
 712 done:
 713         free_page(addr);
 714         return ret;
 715 }
 716
 717 static u32 saved_offset = -1, saved_bytes = -1;
 718
 719 /*
 720  * Proc rdeeprom file write handler.
 721  *
 722  * This function is called when the 'rdeeprom' file is opened for writing
 723  *
 724  * This function can be used to write to a RDEEPROM location.
 725  */
 726 static ssize_t
 727 mwifiex_rdeeprom_write(struct file *file,
 728                        const char __user *ubuf, size_t count, loff_t *ppos)
 729 {
 730         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 731         char *buf = (char *) addr;
 732         size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);
 733         int ret = 0;
 734         int offset = -1, bytes = -1;
 735
 736         if (!buf)
 737                 return -ENOMEM;
 738
 739
 740         if (copy_from_user(buf, ubuf, buf_size)) {
 741                 ret = -EFAULT;
 742                 goto done;
 743         }
 744
 745         sscanf(buf, "%d %d", &offset, &bytes);
 746
 747         if (offset == -1 || bytes == -1) {
 748                 ret = -EINVAL;
 749                 goto done;
 750         } else {
 751                 saved_offset = offset;
 752                 saved_bytes = bytes;
 753                 ret = count;
 754         }
 755 done:
 756         free_page(addr);
 757         return ret;
 758 }
 759
 760 /*
 761  * Proc rdeeprom read write handler.
 762  *
 763  * This function is called when the 'rdeeprom' file is opened for reading
 764  *
 765  * This function can be used to read from a RDEEPROM location.
 766  */
 767 static ssize_t
 768 mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
 769                       size_t count, loff_t *ppos)
 770 {
 771         struct mwifiex_private *priv =
 772                 (struct mwifiex_private *) file->private_data;
 773         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 774         char *buf = (char *) addr;
 775         int pos = 0, ret = 0, i;
 776         u8 value[MAX_EEPROM_DATA];
 777
 778         if (!buf)
 779                 return -ENOMEM;
 780
 781         if (saved_offset == -1) {
 782                 /* No command has been given */
 783                 pos += snprintf(buf, PAGE_SIZE, "0");
 784                 goto done;
 785         }
 786
 787         /* Get command has been given */
 788         ret = mwifiex_eeprom_read(priv, (u16) saved_offset,
 789                                   (u16) saved_bytes, value);
 790         if (ret) {
 791                 ret = -EINVAL;
 792                 goto done;
 793         }
 794
 795         pos += snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
 796
 797         for (i = 0; i < saved_bytes; i++)
 798                 pos += snprintf(buf + strlen(buf), PAGE_SIZE, "%d ", value[i]);
 799
 800         ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
 801
 802 done:
 803         free_page(addr);
 804         return ret;
 805 }
 806
 807 /* Proc hscfg file write handler
 808  * This function can be used to configure the host sleep parameters.
 809  */
 810 static ssize_t
 811 mwifiex_hscfg_write(struct file *file, const char __user *ubuf,
 812                     size_t count, loff_t *ppos)
 813 {
 814         struct mwifiex_private *priv = (void *)file->private_data;
 815         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 816         char *buf = (char *)addr;
 817         size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);
 818         int ret, arg_num;
 819         struct mwifiex_ds_hs_cfg hscfg;
 820         int conditions = HS_CFG_COND_DEF;
 821         u32 gpio = HS_CFG_GPIO_DEF, gap = HS_CFG_GAP_DEF;
 822
 823         if (!buf)
 824                 return -ENOMEM;
 825
 826         if (copy_from_user(buf, ubuf, buf_size)) {
 827                 ret = -EFAULT;
 828                 goto done;
 829         }
 830
 831         arg_num = sscanf(buf, "%d %x %x", &conditions, &gpio, &gap);
 832
 833         memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
 834
 835         if (arg_num > 3) {
 836                 dev_err(priv->adapter->dev, "Too many arguments\n");
 837                 ret = -EINVAL;
 838                 goto done;
 839         }
 840
 841         if (arg_num >= 1 && arg_num < 3)
 842                 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
 843                                       MWIFIEX_SYNC_CMD, &hscfg);
 844
 845         if (arg_num) {
 846                 if (conditions == HS_CFG_CANCEL) {
 847                         mwifiex_cancel_hs(priv, MWIFIEX_ASYNC_CMD);
 848                         ret = count;
 849                         goto done;
 850                 }
 851                 hscfg.conditions = conditions;
 852         }
 853         if (arg_num >= 2)
 854                 hscfg.gpio = gpio;
 855         if (arg_num == 3)
 856                 hscfg.gap = gap;
 857
 858         hscfg.is_invoke_hostcmd = false;
 859         mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 860                               MWIFIEX_SYNC_CMD, &hscfg);
 861
 862         mwifiex_enable_hs(priv->adapter);
 863         priv->adapter->hs_enabling = false;
 864         ret = count;
 865 done:
 866         free_page(addr);
 867         return ret;
 868 }
 869
 870 /* Proc hscfg file read handler
 871  * This function can be used to read host sleep configuration
 872  * parameters from driver.
 873  */
 874 static ssize_t
 875 mwifiex_hscfg_read(struct file *file, char __user *ubuf,
 876                    size_t count, loff_t *ppos)
 877 {
 878         struct mwifiex_private *priv = (void *)file->private_data;
 879         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 880         char *buf = (char *)addr;
 881         int pos, ret;
 882         struct mwifiex_ds_hs_cfg hscfg;
 883
 884         if (!buf)
 885                 return -ENOMEM;
 886
 887         mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
 888                               MWIFIEX_SYNC_CMD, &hscfg);
 889
 890         pos = snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", hscfg.conditions,
 891                        hscfg.gpio, hscfg.gap);
 892
 893         ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
 894
 895         free_page(addr);
 896         return ret;
 897 }
 898
 899 #define MWIFIEX_DFS_ADD_FILE(name) do {                                 \
 900         if (!debugfs_create_file(#name, 0644, priv->dfs_dev_dir,        \
 901                         priv, &mwifiex_dfs_##name##_fops))              \
 902                 return;                                                 \
 903 } while (0);
 904
 905 #define MWIFIEX_DFS_FILE_OPS(name)                                      \
 906 static const struct file_operations mwifiex_dfs_##name##_fops = {       \
 907         .read = mwifiex_##name##_read,                                  \
 908         .write = mwifiex_##name##_write,                                \
 909         .open = simple_open,                                            \
 910 };
 911
 912 #define MWIFIEX_DFS_FILE_READ_OPS(name)                                 \
 913 static const struct file_operations mwifiex_dfs_##name##_fops = {       \
 914         .read = mwifiex_##name##_read,                                  \
 915         .open = simple_open,                                            \
 916 };
 917
 918 #define MWIFIEX_DFS_FILE_WRITE_OPS(name)                                \
 919 static const struct file_operations mwifiex_dfs_##name##_fops = {       \
 920         .write = mwifiex_##name##_write,                                \
 921         .open = simple_open,                                            \
 922 };
 923
 924
 925 MWIFIEX_DFS_FILE_READ_OPS(info);
 926 MWIFIEX_DFS_FILE_READ_OPS(debug);
 927 MWIFIEX_DFS_FILE_READ_OPS(getlog);
 928 MWIFIEX_DFS_FILE_READ_OPS(fw_dump);
 929 MWIFIEX_DFS_FILE_OPS(regrdwr);
 930 MWIFIEX_DFS_FILE_OPS(rdeeprom);
 931 MWIFIEX_DFS_FILE_OPS(hscfg);
 932 MWIFIEX_DFS_FILE_OPS(histogram);
 933
 934 /*
 935  * This function creates the debug FS directory structure and the files.
 936  */
 937 void
 938 mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
 939 {
 940         if (!mwifiex_dfs_dir || !priv)
 941                 return;
 942
 943         priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
 944                                                mwifiex_dfs_dir);
 945
 946         if (!priv->dfs_dev_dir)
 947                 return;
 948
 949         MWIFIEX_DFS_ADD_FILE(info);
 950         MWIFIEX_DFS_ADD_FILE(debug);
 951         MWIFIEX_DFS_ADD_FILE(getlog);
 952         MWIFIEX_DFS_ADD_FILE(regrdwr);
 953         MWIFIEX_DFS_ADD_FILE(rdeeprom);
 954         MWIFIEX_DFS_ADD_FILE(fw_dump);
 955         MWIFIEX_DFS_ADD_FILE(hscfg);
 956         MWIFIEX_DFS_ADD_FILE(histogram);
 957 }
 958
 959 /*
 960  * This function removes the debug FS directory structure and the files.
 961  */
 962 void
 963 mwifiex_dev_debugfs_remove(struct mwifiex_private *priv)
 964 {
 965         if (!priv)
 966                 return;
 967
 968         debugfs_remove_recursive(priv->dfs_dev_dir);
 969 }
 970
 971 /*
 972  * This function creates the top level proc directory.
 973  */
 974 void
 975 mwifiex_debugfs_init(void)
 976 {
 977         if (!mwifiex_dfs_dir)
 978                 mwifiex_dfs_dir = debugfs_create_dir("mwifiex", NULL);
 979 }
 980
 981 /*
 982  * This function removes the top level proc directory.
 983  */
 984 void
 985 mwifiex_debugfs_remove(void)
 986 {
 987         if (mwifiex_dfs_dir)
 988                 debugfs_remove(mwifiex_dfs_dir);
 989 }