drivers/net/wireless/brcm80211/brcmfmac/dhd_dbg.c

   1 /*
   2  * Copyright (c) 2012 Broadcom Corporation
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  11  * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
  13  * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
  14  * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 #include <linux/debugfs.h>
  17 #include <linux/if_ether.h>
  18 #include <linux/if.h>
  19 #include <linux/netdevice.h>
  20 #include <linux/ieee80211.h>
  21 #include <linux/module.h>
  22
  23 #include <defs.h>
  24 #include <brcmu_wifi.h>
  25 #include <brcmu_utils.h>
  26 #include "dhd.h"
  27 #include "dhd_bus.h"
  28 #include "dhd_dbg.h"
  29
  30 static struct dentry *root_folder;
  31
  32 void brcmf_debugfs_init(void)
  33 {
  34         root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
  35         if (IS_ERR(root_folder))
  36                 root_folder = NULL;
  37 }
  38
  39 void brcmf_debugfs_exit(void)
  40 {
  41         if (!root_folder)
  42                 return;
  43
  44         debugfs_remove_recursive(root_folder);
  45         root_folder = NULL;
  46 }
  47
  48 int brcmf_debugfs_attach(struct brcmf_pub *drvr)
  49 {
  50         if (!root_folder)
  51                 return -ENODEV;
  52
  53         drvr->dbgfs_dir = debugfs_create_dir(dev_name(drvr->dev), root_folder);
  54         return PTR_RET(drvr->dbgfs_dir);
  55 }
  56
  57 void brcmf_debugfs_detach(struct brcmf_pub *drvr)
  58 {
  59         if (!IS_ERR_OR_NULL(drvr->dbgfs_dir))
  60                 debugfs_remove_recursive(drvr->dbgfs_dir);
  61 }
  62
  63 struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
  64 {
  65         return drvr->dbgfs_dir;
  66 }
  67
  68 static
  69 ssize_t brcmf_debugfs_sdio_counter_read(struct file *f, char __user *data,
  70                                         size_t count, loff_t *ppos)
  71 {
  72         struct brcmf_sdio_count *sdcnt = f->private_data;
  73         char buf[750];
  74         int res;
  75
  76         /* only allow read from start */
  77         if (*ppos > 0)
  78                 return 0;
  79
  80         res = scnprintf(buf, sizeof(buf),
  81                         "intrcount:    %u\nlastintrs:    %u\n"
  82                         "pollcnt:      %u\nregfails:     %u\n"
  83                         "tx_sderrs:    %u\nfcqueued:     %u\n"
  84                         "rxrtx:        %u\nrx_toolong:   %u\n"
  85                         "rxc_errors:   %u\nrx_hdrfail:   %u\n"
  86                         "rx_badhdr:    %u\nrx_badseq:    %u\n"
  87                         "fc_rcvd:      %u\nfc_xoff:      %u\n"
  88                         "fc_xon:       %u\nrxglomfail:   %u\n"
  89                         "rxglomframes: %u\nrxglompkts:   %u\n"
  90                         "f2rxhdrs:     %u\nf2rxdata:     %u\n"
  91                         "f2txdata:     %u\nf1regdata:    %u\n"
  92                         "tickcnt:      %u\ntx_ctlerrs:   %lu\n"
  93                         "tx_ctlpkts:   %lu\nrx_ctlerrs:   %lu\n"
  94                         "rx_ctlpkts:   %lu\nrx_readahead: %lu\n",
  95                         sdcnt->intrcount, sdcnt->lastintrs,
  96                         sdcnt->pollcnt, sdcnt->regfails,
  97                         sdcnt->tx_sderrs, sdcnt->fcqueued,
  98                         sdcnt->rxrtx, sdcnt->rx_toolong,
  99                         sdcnt->rxc_errors, sdcnt->rx_hdrfail,
 100                         sdcnt->rx_badhdr, sdcnt->rx_badseq,
 101                         sdcnt->fc_rcvd, sdcnt->fc_xoff,
 102                         sdcnt->fc_xon, sdcnt->rxglomfail,
 103                         sdcnt->rxglomframes, sdcnt->rxglompkts,
 104                         sdcnt->f2rxhdrs, sdcnt->f2rxdata,
 105                         sdcnt->f2txdata, sdcnt->f1regdata,
 106                         sdcnt->tickcnt, sdcnt->tx_ctlerrs,
 107                         sdcnt->tx_ctlpkts, sdcnt->rx_ctlerrs,
 108                         sdcnt->rx_ctlpkts, sdcnt->rx_readahead_cnt);
 109
 110         return simple_read_from_buffer(data, count, ppos, buf, res);
 111 }
 112
 113 static const struct file_operations brcmf_debugfs_sdio_counter_ops = {
 114         .owner = THIS_MODULE,
 115         .open = simple_open,
 116         .read = brcmf_debugfs_sdio_counter_read
 117 };
 118
 119 void brcmf_debugfs_create_sdio_count(struct brcmf_pub *drvr,
 120                                      struct brcmf_sdio_count *sdcnt)
 121 {
 122         struct dentry *dentry = drvr->dbgfs_dir;
 123
 124         if (!IS_ERR_OR_NULL(dentry))
 125                 debugfs_create_file("counters", S_IRUGO, dentry,
 126                                     sdcnt, &brcmf_debugfs_sdio_counter_ops);
 127 }