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/netdevice.h>
  18 #include <linux/module.h>
  19
  20 #include <brcmu_wifi.h>
  21 #include <brcmu_utils.h>
  22 #include "dhd.h"
  23 #include "dhd_bus.h"
  24 #include "dhd_dbg.h"
  25 #include "tracepoint.h"
  26
  27 static struct dentry *root_folder;
  28
  29 void brcmf_debugfs_init(void)
  30 {
  31         root_folder = debugfs_create_dir(KBUILD_MODNAME, NULL);
  32         if (IS_ERR(root_folder))
  33                 root_folder = NULL;
  34 }
  35
  36 void brcmf_debugfs_exit(void)
  37 {
  38         if (!root_folder)
  39                 return;
  40
  41         debugfs_remove_recursive(root_folder);
  42         root_folder = NULL;
  43 }
  44
  45 int brcmf_debugfs_attach(struct brcmf_pub *drvr)
  46 {
  47         struct device *dev = drvr->bus_if->dev;
  48
  49         if (!root_folder)
  50                 return -ENODEV;
  51
  52         drvr->dbgfs_dir = debugfs_create_dir(dev_name(dev), root_folder);
  53         return PTR_RET(drvr->dbgfs_dir);
  54 }
  55
  56 void brcmf_debugfs_detach(struct brcmf_pub *drvr)
  57 {
  58         if (!IS_ERR_OR_NULL(drvr->dbgfs_dir))
  59                 debugfs_remove_recursive(drvr->dbgfs_dir);
  60 }
  61
  62 struct dentry *brcmf_debugfs_get_devdir(struct brcmf_pub *drvr)
  63 {
  64         return drvr->dbgfs_dir;
  65 }
  66
  67 static
  68 ssize_t brcmf_debugfs_sdio_counter_read(struct file *f, char __user *data,
  69                                         size_t count, loff_t *ppos)
  70 {
  71         struct brcmf_sdio_count *sdcnt = f->private_data;
  72         char buf[750];
  73         int res;
  74
  75         /* only allow read from start */
  76         if (*ppos > 0)
  77                 return 0;
  78
  79         res = scnprintf(buf, sizeof(buf),
  80                         "intrcount:    %u\nlastintrs:    %u\n"
  81                         "pollcnt:      %u\nregfails:     %u\n"
  82                         "tx_sderrs:    %u\nfcqueued:     %u\n"
  83                         "rxrtx:        %u\nrx_toolong:   %u\n"
  84                         "rxc_errors:   %u\nrx_hdrfail:   %u\n"
  85                         "rx_badhdr:    %u\nrx_badseq:    %u\n"
  86                         "fc_rcvd:      %u\nfc_xoff:      %u\n"
  87                         "fc_xon:       %u\nrxglomfail:   %u\n"
  88                         "rxglomframes: %u\nrxglompkts:   %u\n"
  89                         "f2rxhdrs:     %u\nf2rxdata:     %u\n"
  90                         "f2txdata:     %u\nf1regdata:    %u\n"
  91                         "tickcnt:      %u\ntx_ctlerrs:   %lu\n"
  92                         "tx_ctlpkts:   %lu\nrx_ctlerrs:   %lu\n"
  93                         "rx_ctlpkts:   %lu\nrx_readahead: %lu\n",
  94                         sdcnt->intrcount, sdcnt->lastintrs,
  95                         sdcnt->pollcnt, sdcnt->regfails,
  96                         sdcnt->tx_sderrs, sdcnt->fcqueued,
  97                         sdcnt->rxrtx, sdcnt->rx_toolong,
  98                         sdcnt->rxc_errors, sdcnt->rx_hdrfail,
  99                         sdcnt->rx_badhdr, sdcnt->rx_badseq,
 100                         sdcnt->fc_rcvd, sdcnt->fc_xoff,
 101                         sdcnt->fc_xon, sdcnt->rxglomfail,
 102                         sdcnt->rxglomframes, sdcnt->rxglompkts,
 103                         sdcnt->f2rxhdrs, sdcnt->f2rxdata,
 104                         sdcnt->f2txdata, sdcnt->f1regdata,
 105                         sdcnt->tickcnt, sdcnt->tx_ctlerrs,
 106                         sdcnt->tx_ctlpkts, sdcnt->rx_ctlerrs,
 107                         sdcnt->rx_ctlpkts, sdcnt->rx_readahead_cnt);
 108
 109         return simple_read_from_buffer(data, count, ppos, buf, res);
 110 }
 111
 112 static const struct file_operations brcmf_debugfs_sdio_counter_ops = {
 113         .owner = THIS_MODULE,
 114         .open = simple_open,
 115         .read = brcmf_debugfs_sdio_counter_read
 116 };
 117
 118 void brcmf_debugfs_create_sdio_count(struct brcmf_pub *drvr,
 119                                      struct brcmf_sdio_count *sdcnt)
 120 {
 121         struct dentry *dentry = drvr->dbgfs_dir;
 122
 123         if (!IS_ERR_OR_NULL(dentry))
 124                 debugfs_create_file("counters", S_IRUGO, dentry,
 125                                     sdcnt, &brcmf_debugfs_sdio_counter_ops);
 126 }
 127
 128 static
 129 ssize_t brcmf_debugfs_fws_stats_read(struct file *f, char __user *data,
 130                                      size_t count, loff_t *ppos)
 131 {
 132         struct brcmf_fws_stats *fwstats = f->private_data;
 133         char buf[100];
 134         int res;
 135
 136         /* only allow read from start */
 137         if (*ppos > 0)
 138                 return 0;
 139
 140         res = scnprintf(buf, sizeof(buf),
 141                         "header_pulls:     %u\n"
 142                         "header_only_pkt:  %u\n"
 143                         "tlv_parse_failed: %u\n"
 144                         "tlv_invalid_type: %u\n",
 145                         fwstats->header_pulls,
 146                         fwstats->header_only_pkt,
 147                         fwstats->tlv_parse_failed,
 148                         fwstats->tlv_invalid_type);
 149
 150         return simple_read_from_buffer(data, count, ppos, buf, res);
 151 }
 152
 153 static const struct file_operations brcmf_debugfs_fws_stats_ops = {
 154         .owner = THIS_MODULE,
 155         .open = simple_open,
 156         .read = brcmf_debugfs_fws_stats_read
 157 };
 158
 159 void brcmf_debugfs_create_fws_stats(struct brcmf_pub *drvr,
 160                                     struct brcmf_fws_stats *stats)
 161 {
 162         struct dentry *dentry =  drvr->dbgfs_dir;
 163
 164         if (!IS_ERR_OR_NULL(dentry))
 165                 debugfs_create_file("fws_stats", S_IRUGO, dentry,
 166                                     stats, &brcmf_debugfs_fws_stats_ops);
 167 }