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

   1 // SPDX-License-Identifier: ISC
   2 /*
   3  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   4  */
   5 #include "mt76.h"
   6
   7 static int
   8 mt76_reg_set(void *data, u64 val)
   9 {
  10         struct mt76_dev *dev = data;
  11
  12         __mt76_wr(dev, dev->debugfs_reg, val);
  13         return 0;
  14 }
  15
  16 static int
  17 mt76_reg_get(void *data, u64 *val)
  18 {
  19         struct mt76_dev *dev = data;
  20
  21         *val = __mt76_rr(dev, dev->debugfs_reg);
  22         return 0;
  23 }
  24
  25 DEFINE_DEBUGFS_ATTRIBUTE(fops_regval, mt76_reg_get, mt76_reg_set,
  26                          "0x%08llx\n");
  27
  28 static int
  29 mt76_napi_threaded_set(void *data, u64 val)
  30 {
  31         struct mt76_dev *dev = data;
  32
  33         if (!mt76_is_mmio(dev))
  34                 return -EOPNOTSUPP;
  35
  36         if (dev->napi_dev.threaded != val)
  37                 return dev_set_threaded(&dev->napi_dev, val);
  38
  39         return 0;
  40 }
  41
  42 static int
  43 mt76_napi_threaded_get(void *data, u64 *val)
  44 {
  45         struct mt76_dev *dev = data;
  46
  47         *val = dev->napi_dev.threaded;
  48         return 0;
  49 }
  50
  51 DEFINE_DEBUGFS_ATTRIBUTE(fops_napi_threaded, mt76_napi_threaded_get,
  52                          mt76_napi_threaded_set, "%llu\n");
  53
  54 int mt76_queues_read(struct seq_file *s, void *data)
  55 {
  56         struct mt76_dev *dev = dev_get_drvdata(s->private);
  57         int i;
  58
  59         seq_puts(s, "     queue | hw-queued |      head |      tail |\n");
  60         for (i = 0; i < ARRAY_SIZE(dev->phy.q_tx); i++) {
  61                 struct mt76_queue *q = dev->phy.q_tx[i];
  62
  63                 if (!q)
  64                         continue;
  65
  66                 seq_printf(s, " %9d | %9d | %9d | %9d |\n",
  67                            i, q->queued, q->head, q->tail);
  68         }
  69
  70         return 0;
  71 }
  72 EXPORT_SYMBOL_GPL(mt76_queues_read);
  73
  74 static int mt76_rx_queues_read(struct seq_file *s, void *data)
  75 {
  76         struct mt76_dev *dev = dev_get_drvdata(s->private);
  77         int i, queued;
  78
  79         seq_puts(s, "     queue | hw-queued |      head |      tail |\n");
  80         mt76_for_each_q_rx(dev, i) {
  81                 struct mt76_queue *q = &dev->q_rx[i];
  82
  83                 queued = mt76_is_usb(dev) ? q->ndesc - q->queued : q->queued;
  84                 seq_printf(s, " %9d | %9d | %9d | %9d |\n",
  85                            i, queued, q->head, q->tail);
  86         }
  87
  88         return 0;
  89 }
  90
  91 void mt76_seq_puts_array(struct seq_file *file, const char *str,
  92                          s8 *val, int len)
  93 {
  94         int i;
  95
  96         seq_printf(file, "%10s:", str);
  97         for (i = 0; i < len; i++)
  98                 seq_printf(file, " %2d", val[i]);
  99         seq_puts(file, "\n");
 100 }
 101 EXPORT_SYMBOL_GPL(mt76_seq_puts_array);
 102
 103 static int mt76_read_rate_txpower(struct seq_file *s, void *data)
 104 {
 105         struct mt76_dev *dev = dev_get_drvdata(s->private);
 106
 107         mt76_seq_puts_array(s, "CCK", dev->rate_power.cck,
 108                             ARRAY_SIZE(dev->rate_power.cck));
 109         mt76_seq_puts_array(s, "OFDM", dev->rate_power.ofdm,
 110                             ARRAY_SIZE(dev->rate_power.ofdm));
 111         mt76_seq_puts_array(s, "STBC", dev->rate_power.stbc,
 112                             ARRAY_SIZE(dev->rate_power.stbc));
 113         mt76_seq_puts_array(s, "HT", dev->rate_power.ht,
 114                             ARRAY_SIZE(dev->rate_power.ht));
 115         mt76_seq_puts_array(s, "VHT", dev->rate_power.vht,
 116                             ARRAY_SIZE(dev->rate_power.vht));
 117         return 0;
 118 }
 119
 120 struct dentry *
 121 mt76_register_debugfs_fops(struct mt76_phy *phy,
 122                            const struct file_operations *ops)
 123 {
 124         const struct file_operations *fops = ops ? ops : &fops_regval;
 125         struct mt76_dev *dev = phy->dev;
 126         struct dentry *dir;
 127
 128         dir = debugfs_create_dir("mt76", phy->hw->wiphy->debugfsdir);
 129         if (!dir)
 130                 return NULL;
 131
 132         debugfs_create_u8("led_pin", 0600, dir, &dev->led_pin);
 133         debugfs_create_u32("regidx", 0600, dir, &dev->debugfs_reg);
 134         debugfs_create_file_unsafe("regval", 0600, dir, dev, fops);
 135         debugfs_create_file_unsafe("napi_threaded", 0600, dir, dev,
 136                                    &fops_napi_threaded);
 137         debugfs_create_blob("eeprom", 0400, dir, &dev->eeprom);
 138         if (dev->otp.data)
 139                 debugfs_create_blob("otp", 0400, dir, &dev->otp);
 140         debugfs_create_devm_seqfile(dev->dev, "rate_txpower", dir,
 141                                     mt76_read_rate_txpower);
 142         debugfs_create_devm_seqfile(dev->dev, "rx-queues", dir,
 143                                     mt76_rx_queues_read);
 144
 145         return dir;
 146 }
 147 EXPORT_SYMBOL_GPL(mt76_register_debugfs_fops);