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  */
 301 static ssize_t
 302 mwifiex_getlog_read(struct file *file, char __user *ubuf,
 303                     size_t count, loff_t *ppos)
 304 {
 305         struct mwifiex_private *priv =
 306                 (struct mwifiex_private *) file->private_data;
 307         unsigned long page = get_zeroed_page(GFP_KERNEL);
 308         char *p = (char *) page;
 309         ssize_t ret;
 310         struct mwifiex_ds_get_stats stats;
 311
 312         if (!p)
 313                 return -ENOMEM;
 314
 315         memset(&stats, 0, sizeof(stats));
 316         ret = mwifiex_get_stats_info(priv, &stats);
 317         if (ret)
 318                 goto free_and_exit;
 319
 320         p += sprintf(p, "\n"
 321                      "mcasttxframe     %u\n"
 322                      "failed           %u\n"
 323                      "retry            %u\n"
 324                      "multiretry       %u\n"
 325                      "framedup         %u\n"
 326                      "rtssuccess       %u\n"
 327                      "rtsfailure       %u\n"
 328                      "ackfailure       %u\n"
 329                      "rxfrag           %u\n"
 330                      "mcastrxframe     %u\n"
 331                      "fcserror         %u\n"
 332                      "txframe          %u\n"
 333                      "wepicverrcnt-1   %u\n"
 334                      "wepicverrcnt-2   %u\n"
 335                      "wepicverrcnt-3   %u\n"
 336                      "wepicverrcnt-4   %u\n",
 337                      stats.mcast_tx_frame,
 338                      stats.failed,
 339                      stats.retry,
 340                      stats.multi_retry,
 341                      stats.frame_dup,
 342                      stats.rts_success,
 343                      stats.rts_failure,
 344                      stats.ack_failure,
 345                      stats.rx_frag,
 346                      stats.mcast_rx_frame,
 347                      stats.fcs_error,
 348                      stats.tx_frame,
 349                      stats.wep_icv_error[0],
 350                      stats.wep_icv_error[1],
 351                      stats.wep_icv_error[2],
 352                      stats.wep_icv_error[3]);
 353
 354
 355         ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
 356                                       (unsigned long) p - page);
 357
 358 free_and_exit:
 359         free_page(page);
 360         return ret;
 361 }
 362
 363 static struct mwifiex_debug_info info;
 364
 365 /*
 366  * Proc debug file read handler.
 367  *
 368  * This function is called when the 'debug' file is opened for reading
 369  * It prints the following log information -
 370  *      - Interrupt count
 371  *      - WMM AC VO packets count
 372  *      - WMM AC VI packets count
 373  *      - WMM AC BE packets count
 374  *      - WMM AC BK packets count
 375  *      - Maximum Tx buffer size
 376  *      - Tx buffer size
 377  *      - Current Tx buffer size
 378  *      - Power Save mode
 379  *      - Power Save state
 380  *      - Deep Sleep status
 381  *      - Device wakeup required status
 382  *      - Number of wakeup tries
 383  *      - Host Sleep configured status
 384  *      - Host Sleep activated status
 385  *      - Number of Tx timeouts
 386  *      - Number of command timeouts
 387  *      - Last timed out command ID
 388  *      - Last timed out command action
 389  *      - Last command ID
 390  *      - Last command action
 391  *      - Last command index
 392  *      - Last command response ID
 393  *      - Last command response index
 394  *      - Last event
 395  *      - Last event index
 396  *      - Number of host to card command failures
 397  *      - Number of sleep confirm command failures
 398  *      - Number of host to card data failure
 399  *      - Number of deauthentication events
 400  *      - Number of disassociation events
 401  *      - Number of link lost events
 402  *      - Number of deauthentication commands
 403  *      - Number of association success commands
 404  *      - Number of association failure commands
 405  *      - Number of commands sent
 406  *      - Number of data packets sent
 407  *      - Number of command responses received
 408  *      - Number of events received
 409  *      - Tx BA stream table (TID, RA)
 410  *      - Rx reorder table (TID, TA, Start window, Window size, Buffer)
 411  */
 412 static ssize_t
 413 mwifiex_debug_read(struct file *file, char __user *ubuf,
 414                    size_t count, loff_t *ppos)
 415 {
 416         struct mwifiex_private *priv =
 417                 (struct mwifiex_private *) file->private_data;
 418         struct mwifiex_debug_data *d = &items[0];
 419         unsigned long page = get_zeroed_page(GFP_KERNEL);
 420         char *p = (char *) page;
 421         ssize_t ret;
 422         size_t size, addr;
 423         long val;
 424         int i, j;
 425
 426         if (!p)
 427                 return -ENOMEM;
 428
 429         ret = mwifiex_get_debug_info(priv, &info);
 430         if (ret)
 431                 goto free_and_exit;
 432
 433         for (i = 0; i < num_of_items; i++) {
 434                 p += sprintf(p, "%s=", d[i].name);
 435
 436                 size = d[i].size / d[i].num;
 437
 438                 if (i < (num_of_items - 3))
 439                         addr = d[i].addr + (size_t) &info;
 440                 else /* The last 3 items are struct mwifiex_adapter variables */
 441                         addr = d[i].addr + (size_t) priv->adapter;
 442
 443                 for (j = 0; j < d[i].num; j++) {
 444                         switch (size) {
 445                         case 1:
 446                                 val = *((u8 *) addr);
 447                                 break;
 448                         case 2:
 449                                 val = *((u16 *) addr);
 450                                 break;
 451                         case 4:
 452                                 val = *((u32 *) addr);
 453                                 break;
 454                         case 8:
 455                                 val = *((long long *) addr);
 456                                 break;
 457                         default:
 458                                 val = -1;
 459                                 break;
 460                         }
 461
 462                         p += sprintf(p, "%#lx ", val);
 463                         addr += size;
 464                 }
 465
 466                 p += sprintf(p, "\n");
 467         }
 468
 469         if (info.tx_tbl_num) {
 470                 p += sprintf(p, "Tx BA stream table:\n");
 471                 for (i = 0; i < info.tx_tbl_num; i++)
 472                         p += sprintf(p, "tid = %d, ra = %pM\n",
 473                                      info.tx_tbl[i].tid, info.tx_tbl[i].ra);
 474         }
 475
 476         if (info.rx_tbl_num) {
 477                 p += sprintf(p, "Rx reorder table:\n");
 478                 for (i = 0; i < info.rx_tbl_num; i++) {
 479                         p += sprintf(p, "tid = %d, ta = %pM, "
 480                                      "start_win = %d, "
 481                                      "win_size = %d, buffer: ",
 482                                      info.rx_tbl[i].tid,
 483                                      info.rx_tbl[i].ta,
 484                                      info.rx_tbl[i].start_win,
 485                                      info.rx_tbl[i].win_size);
 486
 487                         for (j = 0; j < info.rx_tbl[i].win_size; j++)
 488                                 p += sprintf(p, "%c ",
 489                                              info.rx_tbl[i].buffer[j] ?
 490                                              '1' : '0');
 491
 492                         p += sprintf(p, "\n");
 493                 }
 494         }
 495
 496         ret = simple_read_from_buffer(ubuf, count, ppos, (char *) page,
 497                                       (unsigned long) p - page);
 498
 499 free_and_exit:
 500         free_page(page);
 501         return ret;
 502 }
 503
 504 static u32 saved_reg_type, saved_reg_offset, saved_reg_value;
 505
 506 /*
 507  * Proc regrdwr file write handler.
 508  *
 509  * This function is called when the 'regrdwr' file is opened for writing
 510  *
 511  * This function can be used to write to a register.
 512  */
 513 static ssize_t
 514 mwifiex_regrdwr_write(struct file *file,
 515                       const char __user *ubuf, size_t count, loff_t *ppos)
 516 {
 517         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 518         char *buf = (char *) addr;
 519         size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);
 520         int ret;
 521         u32 reg_type = 0, reg_offset = 0, reg_value = UINT_MAX;
 522
 523         if (!buf)
 524                 return -ENOMEM;
 525
 526
 527         if (copy_from_user(buf, ubuf, buf_size)) {
 528                 ret = -EFAULT;
 529                 goto done;
 530         }
 531
 532         sscanf(buf, "%u %x %x", &reg_type, &reg_offset, &reg_value);
 533
 534         if (reg_type == 0 || reg_offset == 0) {
 535                 ret = -EINVAL;
 536                 goto done;
 537         } else {
 538                 saved_reg_type = reg_type;
 539                 saved_reg_offset = reg_offset;
 540                 saved_reg_value = reg_value;
 541                 ret = count;
 542         }
 543 done:
 544         free_page(addr);
 545         return ret;
 546 }
 547
 548 /*
 549  * Proc regrdwr file read handler.
 550  *
 551  * This function is called when the 'regrdwr' file is opened for reading
 552  *
 553  * This function can be used to read from a register.
 554  */
 555 static ssize_t
 556 mwifiex_regrdwr_read(struct file *file, char __user *ubuf,
 557                      size_t count, loff_t *ppos)
 558 {
 559         struct mwifiex_private *priv =
 560                 (struct mwifiex_private *) file->private_data;
 561         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 562         char *buf = (char *) addr;
 563         int pos = 0, ret = 0;
 564         u32 reg_value;
 565
 566         if (!buf)
 567                 return -ENOMEM;
 568
 569         if (!saved_reg_type) {
 570                 /* No command has been given */
 571                 pos += snprintf(buf, PAGE_SIZE, "0");
 572                 goto done;
 573         }
 574         /* Set command has been given */
 575         if (saved_reg_value != UINT_MAX) {
 576                 ret = mwifiex_reg_write(priv, saved_reg_type, saved_reg_offset,
 577                                         saved_reg_value);
 578
 579                 pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n",
 580                                 saved_reg_type, saved_reg_offset,
 581                                 saved_reg_value);
 582
 583                 ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
 584
 585                 goto done;
 586         }
 587         /* Get command has been given */
 588         ret = mwifiex_reg_read(priv, saved_reg_type,
 589                                saved_reg_offset, &reg_value);
 590         if (ret) {
 591                 ret = -EINVAL;
 592                 goto done;
 593         }
 594
 595         pos += snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", saved_reg_type,
 596                         saved_reg_offset, reg_value);
 597
 598         ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
 599
 600 done:
 601         free_page(addr);
 602         return ret;
 603 }
 604
 605 static u32 saved_offset = -1, saved_bytes = -1;
 606
 607 /*
 608  * Proc rdeeprom file write handler.
 609  *
 610  * This function is called when the 'rdeeprom' file is opened for writing
 611  *
 612  * This function can be used to write to a RDEEPROM location.
 613  */
 614 static ssize_t
 615 mwifiex_rdeeprom_write(struct file *file,
 616                        const char __user *ubuf, size_t count, loff_t *ppos)
 617 {
 618         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 619         char *buf = (char *) addr;
 620         size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);
 621         int ret = 0;
 622         int offset = -1, bytes = -1;
 623
 624         if (!buf)
 625                 return -ENOMEM;
 626
 627
 628         if (copy_from_user(buf, ubuf, buf_size)) {
 629                 ret = -EFAULT;
 630                 goto done;
 631         }
 632
 633         sscanf(buf, "%d %d", &offset, &bytes);
 634
 635         if (offset == -1 || bytes == -1) {
 636                 ret = -EINVAL;
 637                 goto done;
 638         } else {
 639                 saved_offset = offset;
 640                 saved_bytes = bytes;
 641                 ret = count;
 642         }
 643 done:
 644         free_page(addr);
 645         return ret;
 646 }
 647
 648 /*
 649  * Proc rdeeprom read write handler.
 650  *
 651  * This function is called when the 'rdeeprom' file is opened for reading
 652  *
 653  * This function can be used to read from a RDEEPROM location.
 654  */
 655 static ssize_t
 656 mwifiex_rdeeprom_read(struct file *file, char __user *ubuf,
 657                       size_t count, loff_t *ppos)
 658 {
 659         struct mwifiex_private *priv =
 660                 (struct mwifiex_private *) file->private_data;
 661         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 662         char *buf = (char *) addr;
 663         int pos = 0, ret = 0, i;
 664         u8 value[MAX_EEPROM_DATA];
 665
 666         if (!buf)
 667                 return -ENOMEM;
 668
 669         if (saved_offset == -1) {
 670                 /* No command has been given */
 671                 pos += snprintf(buf, PAGE_SIZE, "0");
 672                 goto done;
 673         }
 674
 675         /* Get command has been given */
 676         ret = mwifiex_eeprom_read(priv, (u16) saved_offset,
 677                                   (u16) saved_bytes, value);
 678         if (ret) {
 679                 ret = -EINVAL;
 680                 goto done;
 681         }
 682
 683         pos += snprintf(buf, PAGE_SIZE, "%d %d ", saved_offset, saved_bytes);
 684
 685         for (i = 0; i < saved_bytes; i++)
 686                 pos += snprintf(buf + strlen(buf), PAGE_SIZE, "%d ", value[i]);
 687
 688         ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
 689
 690 done:
 691         free_page(addr);
 692         return ret;
 693 }
 694
 695 /* Proc hscfg file write handler
 696  * This function can be used to configure the host sleep parameters.
 697  */
 698 static ssize_t
 699 mwifiex_hscfg_write(struct file *file, const char __user *ubuf,
 700                     size_t count, loff_t *ppos)
 701 {
 702         struct mwifiex_private *priv = (void *)file->private_data;
 703         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 704         char *buf = (char *)addr;
 705         size_t buf_size = min_t(size_t, count, PAGE_SIZE - 1);
 706         int ret, arg_num;
 707         struct mwifiex_ds_hs_cfg hscfg;
 708         int conditions = HS_CFG_COND_DEF;
 709         u32 gpio = HS_CFG_GPIO_DEF, gap = HS_CFG_GAP_DEF;
 710
 711         if (!buf)
 712                 return -ENOMEM;
 713
 714         if (copy_from_user(buf, ubuf, buf_size)) {
 715                 ret = -EFAULT;
 716                 goto done;
 717         }
 718
 719         arg_num = sscanf(buf, "%d %x %x", &conditions, &gpio, &gap);
 720
 721         memset(&hscfg, 0, sizeof(struct mwifiex_ds_hs_cfg));
 722
 723         if (arg_num > 3) {
 724                 dev_err(priv->adapter->dev, "Too many arguments\n");
 725                 ret = -EINVAL;
 726                 goto done;
 727         }
 728
 729         if (arg_num >= 1 && arg_num < 3)
 730                 mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
 731                                       MWIFIEX_SYNC_CMD, &hscfg);
 732
 733         if (arg_num) {
 734                 if (conditions == HS_CFG_CANCEL) {
 735                         mwifiex_cancel_hs(priv, MWIFIEX_ASYNC_CMD);
 736                         ret = count;
 737                         goto done;
 738                 }
 739                 hscfg.conditions = conditions;
 740         }
 741         if (arg_num >= 2)
 742                 hscfg.gpio = gpio;
 743         if (arg_num == 3)
 744                 hscfg.gap = gap;
 745
 746         hscfg.is_invoke_hostcmd = false;
 747         mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_SET,
 748                               MWIFIEX_SYNC_CMD, &hscfg);
 749
 750         mwifiex_enable_hs(priv->adapter);
 751         priv->adapter->hs_enabling = false;
 752         ret = count;
 753 done:
 754         free_page(addr);
 755         return ret;
 756 }
 757
 758 /* Proc hscfg file read handler
 759  * This function can be used to read host sleep configuration
 760  * parameters from driver.
 761  */
 762 static ssize_t
 763 mwifiex_hscfg_read(struct file *file, char __user *ubuf,
 764                    size_t count, loff_t *ppos)
 765 {
 766         struct mwifiex_private *priv = (void *)file->private_data;
 767         unsigned long addr = get_zeroed_page(GFP_KERNEL);
 768         char *buf = (char *)addr;
 769         int pos, ret;
 770         struct mwifiex_ds_hs_cfg hscfg;
 771
 772         if (!buf)
 773                 return -ENOMEM;
 774
 775         mwifiex_set_hs_params(priv, HostCmd_ACT_GEN_GET,
 776                               MWIFIEX_SYNC_CMD, &hscfg);
 777
 778         pos = snprintf(buf, PAGE_SIZE, "%u 0x%x 0x%x\n", hscfg.conditions,
 779                        hscfg.gpio, hscfg.gap);
 780
 781         ret = simple_read_from_buffer(ubuf, count, ppos, buf, pos);
 782
 783         free_page(addr);
 784         return ret;
 785 }
 786
 787 #define MWIFIEX_DFS_ADD_FILE(name) do {                                 \
 788         if (!debugfs_create_file(#name, 0644, priv->dfs_dev_dir,        \
 789                         priv, &mwifiex_dfs_##name##_fops))              \
 790                 return;                                                 \
 791 } while (0);
 792
 793 #define MWIFIEX_DFS_FILE_OPS(name)                                      \
 794 static const struct file_operations mwifiex_dfs_##name##_fops = {       \
 795         .read = mwifiex_##name##_read,                                  \
 796         .write = mwifiex_##name##_write,                                \
 797         .open = simple_open,                                            \
 798 };
 799
 800 #define MWIFIEX_DFS_FILE_READ_OPS(name)                                 \
 801 static const struct file_operations mwifiex_dfs_##name##_fops = {       \
 802         .read = mwifiex_##name##_read,                                  \
 803         .open = simple_open,                                            \
 804 };
 805
 806 #define MWIFIEX_DFS_FILE_WRITE_OPS(name)                                \
 807 static const struct file_operations mwifiex_dfs_##name##_fops = {       \
 808         .write = mwifiex_##name##_write,                                \
 809         .open = simple_open,                                            \
 810 };
 811
 812
 813 MWIFIEX_DFS_FILE_READ_OPS(info);
 814 MWIFIEX_DFS_FILE_READ_OPS(debug);
 815 MWIFIEX_DFS_FILE_READ_OPS(getlog);
 816 MWIFIEX_DFS_FILE_READ_OPS(fw_dump);
 817 MWIFIEX_DFS_FILE_OPS(regrdwr);
 818 MWIFIEX_DFS_FILE_OPS(rdeeprom);
 819 MWIFIEX_DFS_FILE_OPS(hscfg);
 820
 821 /*
 822  * This function creates the debug FS directory structure and the files.
 823  */
 824 void
 825 mwifiex_dev_debugfs_init(struct mwifiex_private *priv)
 826 {
 827         if (!mwifiex_dfs_dir || !priv)
 828                 return;
 829
 830         priv->dfs_dev_dir = debugfs_create_dir(priv->netdev->name,
 831                                                mwifiex_dfs_dir);
 832
 833         if (!priv->dfs_dev_dir)
 834                 return;
 835
 836         MWIFIEX_DFS_ADD_FILE(info);
 837         MWIFIEX_DFS_ADD_FILE(debug);
 838         MWIFIEX_DFS_ADD_FILE(getlog);
 839         MWIFIEX_DFS_ADD_FILE(regrdwr);
 840         MWIFIEX_DFS_ADD_FILE(rdeeprom);
 841         MWIFIEX_DFS_ADD_FILE(fw_dump);
 842         MWIFIEX_DFS_ADD_FILE(hscfg);
 843 }
 844
 845 /*
 846  * This function removes the debug FS directory structure and the files.
 847  */
 848 void
 849 mwifiex_dev_debugfs_remove(struct mwifiex_private *priv)
 850 {
 851         if (!priv)
 852                 return;
 853
 854         debugfs_remove_recursive(priv->dfs_dev_dir);
 855 }
 856
 857 /*
 858  * This function creates the top level proc directory.
 859  */
 860 void
 861 mwifiex_debugfs_init(void)
 862 {
 863         if (!mwifiex_dfs_dir)
 864                 mwifiex_dfs_dir = debugfs_create_dir("mwifiex", NULL);
 865 }
 866
 867 /*
 868  * This function removes the top level proc directory.
 869  */
 870 void
 871 mwifiex_debugfs_remove(void)
 872 {
 873         if (mwifiex_dfs_dir)
 874                 debugfs_remove(mwifiex_dfs_dir);
 875 }