1 /*
2  * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org>
3  * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License version 2
7  * as published by the Free Software Foundation
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12  * GNU General Public License for more details.
13  */
14 
15 #include <linux/debugfs.h>
16 
17 #include "mt7601u.h"
18 #include "eeprom.h"
19 
20 static int
21 mt76_reg_set(void *data, u64 val)
22 {
23 	struct mt7601u_dev *dev = data;
24 
25 	mt76_wr(dev, dev->debugfs_reg, val);
26 	return 0;
27 }
28 
29 static int
30 mt76_reg_get(void *data, u64 *val)
31 {
32 	struct mt7601u_dev *dev = data;
33 
34 	*val = mt76_rr(dev, dev->debugfs_reg);
35 	return 0;
36 }
37 
38 DEFINE_SIMPLE_ATTRIBUTE(fops_regval, mt76_reg_get, mt76_reg_set, "0x%08llx\n");
39 
40 static int
41 mt7601u_ampdu_stat_read(struct seq_file *file, void *data)
42 {
43 	struct mt7601u_dev *dev = file->private;
44 	int i, j;
45 
46 #define stat_printf(grp, off, name)					\
47 	seq_printf(file, #name ":\t%llu\n", dev->stats.grp[off])
48 
49 	stat_printf(rx_stat, 0, rx_crc_err);
50 	stat_printf(rx_stat, 1, rx_phy_err);
51 	stat_printf(rx_stat, 2, rx_false_cca);
52 	stat_printf(rx_stat, 3, rx_plcp_err);
53 	stat_printf(rx_stat, 4, rx_fifo_overflow);
54 	stat_printf(rx_stat, 5, rx_duplicate);
55 
56 	stat_printf(tx_stat, 0, tx_fail_cnt);
57 	stat_printf(tx_stat, 1, tx_bcn_cnt);
58 	stat_printf(tx_stat, 2, tx_success);
59 	stat_printf(tx_stat, 3, tx_retransmit);
60 	stat_printf(tx_stat, 4, tx_zero_len);
61 	stat_printf(tx_stat, 5, tx_underflow);
62 
63 	stat_printf(aggr_stat, 0, non_aggr_tx);
64 	stat_printf(aggr_stat, 1, aggr_tx);
65 
66 	stat_printf(zero_len_del, 0, tx_zero_len_del);
67 	stat_printf(zero_len_del, 1, rx_zero_len_del);
68 #undef stat_printf
69 
70 	seq_puts(file, "Aggregations stats:\n");
71 	for (i = 0; i < 4; i++) {
72 		for (j = 0; j < 8; j++)
73 			seq_printf(file, "%08llx ",
74 				   dev->stats.aggr_n[i * 8 + j]);
75 		seq_putc(file, '\n');
76 	}
77 
78 	seq_printf(file, "recent average AMPDU len: %d\n",
79 		   atomic_read(&dev->avg_ampdu_len));
80 
81 	return 0;
82 }
83 
84 static int
85 mt7601u_ampdu_stat_open(struct inode *inode, struct file *f)
86 {
87 	return single_open(f, mt7601u_ampdu_stat_read, inode->i_private);
88 }
89 
90 static const struct file_operations fops_ampdu_stat = {
91 	.open = mt7601u_ampdu_stat_open,
92 	.read = seq_read,
93 	.llseek = seq_lseek,
94 	.release = single_release,
95 };
96 
97 static int
98 mt7601u_eeprom_param_read(struct seq_file *file, void *data)
99 {
100 	struct mt7601u_dev *dev = file->private;
101 	struct mt7601u_rate_power *rp = &dev->ee->power_rate_table;
102 	struct tssi_data *td = &dev->ee->tssi_data;
103 	int i;
104 
105 	seq_printf(file, "RF freq offset: %hhx\n", dev->ee->rf_freq_off);
106 	seq_printf(file, "RSSI offset: %hhx %hhx\n",
107 		   dev->ee->rssi_offset[0], dev->ee->rssi_offset[1]);
108 	seq_printf(file, "Reference temp: %hhx\n", dev->ee->ref_temp);
109 	seq_printf(file, "LNA gain: %hhx\n", dev->ee->lna_gain);
110 	seq_printf(file, "Reg channels: %hhu-%hhu\n", dev->ee->reg.start,
111 		   dev->ee->reg.start + dev->ee->reg.num - 1);
112 
113 	seq_puts(file, "Per rate power:\n");
114 	for (i = 0; i < 2; i++)
115 		seq_printf(file, "\t raw:%02hhx bw20:%02hhx bw40:%02hhx\n",
116 			   rp->cck[i].raw, rp->cck[i].bw20, rp->cck[i].bw40);
117 	for (i = 0; i < 4; i++)
118 		seq_printf(file, "\t raw:%02hhx bw20:%02hhx bw40:%02hhx\n",
119 			   rp->ofdm[i].raw, rp->ofdm[i].bw20, rp->ofdm[i].bw40);
120 	for (i = 0; i < 4; i++)
121 		seq_printf(file, "\t raw:%02hhx bw20:%02hhx bw40:%02hhx\n",
122 			   rp->ht[i].raw, rp->ht[i].bw20, rp->ht[i].bw40);
123 
124 	seq_puts(file, "Per channel power:\n");
125 	for (i = 0; i < 7; i++)
126 		seq_printf(file, "\t tx_power  ch%u:%02hhx ch%u:%02hhx\n",
127 			   i * 2 + 1, dev->ee->chan_pwr[i * 2],
128 			   i * 2 + 2, dev->ee->chan_pwr[i * 2 + 1]);
129 
130 	if (!dev->ee->tssi_enabled)
131 		return 0;
132 
133 	seq_puts(file, "TSSI:\n");
134 	seq_printf(file, "\t slope:%02hhx\n", td->slope);
135 	seq_printf(file, "\t offset=%02hhx %02hhx %02hhx\n",
136 		   td->offset[0], td->offset[1], td->offset[2]);
137 	seq_printf(file, "\t delta_off:%08x\n", td->tx0_delta_offset);
138 
139 	return 0;
140 }
141 
142 static int
143 mt7601u_eeprom_param_open(struct inode *inode, struct file *f)
144 {
145 	return single_open(f, mt7601u_eeprom_param_read, inode->i_private);
146 }
147 
148 static const struct file_operations fops_eeprom_param = {
149 	.open = mt7601u_eeprom_param_open,
150 	.read = seq_read,
151 	.llseek = seq_lseek,
152 	.release = single_release,
153 };
154 
155 void mt7601u_init_debugfs(struct mt7601u_dev *dev)
156 {
157 	struct dentry *dir;
158 
159 	dir = debugfs_create_dir("mt7601u", dev->hw->wiphy->debugfsdir);
160 	if (!dir)
161 		return;
162 
163 	debugfs_create_u8("temperature", S_IRUSR, dir, &dev->raw_temp);
164 	debugfs_create_u32("temp_mode", S_IRUSR, dir, &dev->temp_mode);
165 
166 	debugfs_create_u32("regidx", S_IRUSR | S_IWUSR, dir, &dev->debugfs_reg);
167 	debugfs_create_file("regval", S_IRUSR | S_IWUSR, dir, dev,
168 			    &fops_regval);
169 	debugfs_create_file("ampdu_stat", S_IRUSR, dir, dev, &fops_ampdu_stat);
170 	debugfs_create_file("eeprom_param", S_IRUSR, dir, dev,
171 			    &fops_eeprom_param);
172 }
173