drivers/net/wireless/mediatek/mt76/debugfs.c

   1 /*
   2  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   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
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16 #include "mt76.h"
  17
  18 static int
  19 mt76_reg_set(void *data, u64 val)
  20 {
  21         struct mt76_dev *dev = data;
  22
  23         dev->bus->wr(dev, dev->debugfs_reg, val);
  24         return 0;
  25 }
  26
  27 static int
  28 mt76_reg_get(void *data, u64 *val)
  29 {
  30         struct mt76_dev *dev = data;
  31
  32         *val = dev->bus->rr(dev, dev->debugfs_reg);
  33         return 0;
  34 }
  35
  36 DEFINE_DEBUGFS_ATTRIBUTE(fops_regval, mt76_reg_get, mt76_reg_set,
  37                          "0x%08llx\n");
  38
  39 static int
  40 mt76_queues_read(struct seq_file *s, void *data)
  41 {
  42         struct mt76_dev *dev = dev_get_drvdata(s->private);
  43         int i;
  44
  45         for (i = 0; i < ARRAY_SIZE(dev->q_tx); i++) {
  46                 struct mt76_sw_queue *q = &dev->q_tx[i];
  47
  48                 if (!q->q)
  49                         continue;
  50
  51                 seq_printf(s,
  52                            "%d: queued=%d head=%d tail=%d swq_queued=%d\n",
  53                            i, q->q->queued, q->q->head, q->q->tail,
  54                            q->swq_queued);
  55         }
  56
  57         return 0;
  58 }
  59
  60 void mt76_seq_puts_array(struct seq_file *file, const char *str,
  61                          s8 *val, int len)
  62 {
  63         int i;
  64
  65         seq_printf(file, "%10s:", str);
  66         for (i = 0; i < len; i++)
  67                 seq_printf(file, " %2d", val[i]);
  68         seq_puts(file, "\n");
  69 }
  70 EXPORT_SYMBOL_GPL(mt76_seq_puts_array);
  71
  72 static int mt76_read_rate_txpower(struct seq_file *s, void *data)
  73 {
  74         struct mt76_dev *dev = dev_get_drvdata(s->private);
  75
  76         mt76_seq_puts_array(s, "CCK", dev->rate_power.cck,
  77                             ARRAY_SIZE(dev->rate_power.cck));
  78         mt76_seq_puts_array(s, "OFDM", dev->rate_power.ofdm,
  79                             ARRAY_SIZE(dev->rate_power.ofdm));
  80         mt76_seq_puts_array(s, "STBC", dev->rate_power.stbc,
  81                             ARRAY_SIZE(dev->rate_power.stbc));
  82         mt76_seq_puts_array(s, "HT", dev->rate_power.ht,
  83                             ARRAY_SIZE(dev->rate_power.ht));
  84         mt76_seq_puts_array(s, "VHT", dev->rate_power.vht,
  85                             ARRAY_SIZE(dev->rate_power.vht));
  86         return 0;
  87 }
  88
  89 struct dentry *mt76_register_debugfs(struct mt76_dev *dev)
  90 {
  91         struct dentry *dir;
  92
  93         dir = debugfs_create_dir("mt76", dev->hw->wiphy->debugfsdir);
  94         if (!dir)
  95                 return NULL;
  96
  97         debugfs_create_u8("led_pin", 0600, dir, &dev->led_pin);
  98         debugfs_create_u32("regidx", 0600, dir, &dev->debugfs_reg);
  99         debugfs_create_file_unsafe("regval", 0600, dir, dev,
 100                                    &fops_regval);
 101         debugfs_create_blob("eeprom", 0400, dir, &dev->eeprom);
 102         if (dev->otp.data)
 103                 debugfs_create_blob("otp", 0400, dir, &dev->otp);
 104         debugfs_create_devm_seqfile(dev->dev, "queues", dir, mt76_queues_read);
 105         debugfs_create_devm_seqfile(dev->dev, "rate_txpower", dir,
 106                                     mt76_read_rate_txpower);
 107
 108         return dir;
 109 }
 110 EXPORT_SYMBOL_GPL(mt76_register_debugfs);