1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Debugfs interface.
4 *
5 * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
6 * Copyright (c) 2010, ST-Ericsson
7 */
8 #include <linux/debugfs.h>
9 #include <linux/seq_file.h>
10 #include <linux/crc32.h>
11
12 #include "debug.h"
13 #include "wfx.h"
14 #include "sta.h"
15 #include "main.h"
16 #include "hif_tx.h"
17 #include "hif_tx_mib.h"
18
19 #define CREATE_TRACE_POINTS
20 #include "traces.h"
21
22 static const struct trace_print_flags hif_msg_print_map[] = {
23 hif_msg_list,
24 };
25
26 static const struct trace_print_flags hif_mib_print_map[] = {
27 hif_mib_list,
28 };
29
30 static const struct trace_print_flags wfx_reg_print_map[] = {
31 wfx_reg_list,
32 };
33
get_symbol(unsigned long val,const struct trace_print_flags * symbol_array)34 static const char *get_symbol(unsigned long val,
35 const struct trace_print_flags *symbol_array)
36 {
37 int i;
38
39 for (i = 0; symbol_array[i].mask != -1; i++) {
40 if (val == symbol_array[i].mask)
41 return symbol_array[i].name;
42 }
43
44 return "unknown";
45 }
46
get_hif_name(unsigned long id)47 const char *get_hif_name(unsigned long id)
48 {
49 return get_symbol(id, hif_msg_print_map);
50 }
51
get_mib_name(unsigned long id)52 const char *get_mib_name(unsigned long id)
53 {
54 return get_symbol(id, hif_mib_print_map);
55 }
56
get_reg_name(unsigned long id)57 const char *get_reg_name(unsigned long id)
58 {
59 return get_symbol(id, wfx_reg_print_map);
60 }
61
wfx_counters_show(struct seq_file * seq,void * v)62 static int wfx_counters_show(struct seq_file *seq, void *v)
63 {
64 int ret, i;
65 struct wfx_dev *wdev = seq->private;
66 struct hif_mib_extended_count_table counters[3];
67
68 for (i = 0; i < ARRAY_SIZE(counters); i++) {
69 ret = hif_get_counters_table(wdev, i, counters + i);
70 if (ret < 0)
71 return ret;
72 if (ret > 0)
73 return -EIO;
74 }
75
76 seq_printf(seq, "%-24s %12s %12s %12s\n",
77 "", "global", "iface 0", "iface 1");
78
79 #define PUT_COUNTER(name) \
80 seq_printf(seq, "%-24s %12d %12d %12d\n", #name, \
81 le32_to_cpu(counters[2].count_##name), \
82 le32_to_cpu(counters[0].count_##name), \
83 le32_to_cpu(counters[1].count_##name))
84
85 PUT_COUNTER(tx_frames);
86 PUT_COUNTER(tx_frames_multicast);
87 PUT_COUNTER(tx_frames_success);
88 PUT_COUNTER(tx_frames_retried);
89 PUT_COUNTER(tx_frames_multi_retried);
90 PUT_COUNTER(tx_frames_failed);
91
92 PUT_COUNTER(ack_failed);
93 PUT_COUNTER(rts_success);
94 PUT_COUNTER(rts_failed);
95
96 PUT_COUNTER(rx_frames);
97 PUT_COUNTER(rx_frames_multicast);
98 PUT_COUNTER(rx_frames_success);
99 PUT_COUNTER(rx_frames_failed);
100 PUT_COUNTER(drop_plcp);
101 PUT_COUNTER(drop_fcs);
102 PUT_COUNTER(drop_no_key);
103 PUT_COUNTER(drop_decryption);
104 PUT_COUNTER(drop_tkip_mic);
105 PUT_COUNTER(drop_bip_mic);
106 PUT_COUNTER(drop_cmac_icv);
107 PUT_COUNTER(drop_cmac_replay);
108 PUT_COUNTER(drop_ccmp_replay);
109 PUT_COUNTER(drop_duplicate);
110
111 PUT_COUNTER(rx_bcn_miss);
112 PUT_COUNTER(rx_bcn_success);
113 PUT_COUNTER(rx_bcn_dtim);
114 PUT_COUNTER(rx_bcn_dtim_aid0_clr);
115 PUT_COUNTER(rx_bcn_dtim_aid0_set);
116
117 #undef PUT_COUNTER
118
119 for (i = 0; i < ARRAY_SIZE(counters[0].reserved); i++)
120 seq_printf(seq, "reserved[%02d]%12s %12d %12d %12d\n", i, "",
121 le32_to_cpu(counters[2].reserved[i]),
122 le32_to_cpu(counters[0].reserved[i]),
123 le32_to_cpu(counters[1].reserved[i]));
124
125 return 0;
126 }
127 DEFINE_SHOW_ATTRIBUTE(wfx_counters);
128
129 static const char * const channel_names[] = {
130 [0] = "1M",
131 [1] = "2M",
132 [2] = "5.5M",
133 [3] = "11M",
134 /* Entries 4 and 5 does not exist */
135 [6] = "6M",
136 [7] = "9M",
137 [8] = "12M",
138 [9] = "18M",
139 [10] = "24M",
140 [11] = "36M",
141 [12] = "48M",
142 [13] = "54M",
143 [14] = "MCS0",
144 [15] = "MCS1",
145 [16] = "MCS2",
146 [17] = "MCS3",
147 [18] = "MCS4",
148 [19] = "MCS5",
149 [20] = "MCS6",
150 [21] = "MCS7",
151 };
152
wfx_rx_stats_show(struct seq_file * seq,void * v)153 static int wfx_rx_stats_show(struct seq_file *seq, void *v)
154 {
155 struct wfx_dev *wdev = seq->private;
156 struct hif_rx_stats *st = &wdev->rx_stats;
157 int i;
158
159 mutex_lock(&wdev->rx_stats_lock);
160 seq_printf(seq, "Timestamp: %dus\n", st->date);
161 seq_printf(seq, "Low power clock: frequency %uHz, external %s\n",
162 le32_to_cpu(st->pwr_clk_freq),
163 st->is_ext_pwr_clk ? "yes" : "no");
164 seq_printf(seq,
165 "Num. of frames: %d, PER (x10e4): %d, Throughput: %dKbps/s\n",
166 st->nb_rx_frame, st->per_total, st->throughput);
167 seq_puts(seq, " Num. of PER RSSI SNR CFO\n");
168 seq_puts(seq, " frames (x10e4) (dBm) (dB) (kHz)\n");
169 for (i = 0; i < ARRAY_SIZE(channel_names); i++) {
170 if (channel_names[i])
171 seq_printf(seq, "%5s %8d %8d %8d %8d %8d\n",
172 channel_names[i],
173 le32_to_cpu(st->nb_rx_by_rate[i]),
174 le16_to_cpu(st->per[i]),
175 (s16)le16_to_cpu(st->rssi[i]) / 100,
176 (s16)le16_to_cpu(st->snr[i]) / 100,
177 (s16)le16_to_cpu(st->cfo[i]));
178 }
179 mutex_unlock(&wdev->rx_stats_lock);
180
181 return 0;
182 }
183 DEFINE_SHOW_ATTRIBUTE(wfx_rx_stats);
184
wfx_tx_power_loop_show(struct seq_file * seq,void * v)185 static int wfx_tx_power_loop_show(struct seq_file *seq, void *v)
186 {
187 struct wfx_dev *wdev = seq->private;
188 struct hif_tx_power_loop_info *st = &wdev->tx_power_loop_info;
189 int tmp;
190
191 mutex_lock(&wdev->tx_power_loop_info_lock);
192 tmp = le16_to_cpu(st->tx_gain_dig);
193 seq_printf(seq, "Tx gain digital: %d\n", tmp);
194 tmp = le16_to_cpu(st->tx_gain_pa);
195 seq_printf(seq, "Tx gain PA: %d\n", tmp);
196 tmp = (s16)le16_to_cpu(st->target_pout);
197 seq_printf(seq, "Target Pout: %d.%02d dBm\n", tmp / 4, (tmp % 4) * 25);
198 tmp = (s16)le16_to_cpu(st->p_estimation);
199 seq_printf(seq, "FEM Pout: %d.%02d dBm\n", tmp / 4, (tmp % 4) * 25);
200 tmp = le16_to_cpu(st->vpdet);
201 seq_printf(seq, "Vpdet: %d mV\n", tmp);
202 seq_printf(seq, "Measure index: %d\n", st->measurement_index);
203 mutex_unlock(&wdev->tx_power_loop_info_lock);
204
205 return 0;
206 }
207 DEFINE_SHOW_ATTRIBUTE(wfx_tx_power_loop);
208
wfx_send_pds_write(struct file * file,const char __user * user_buf,size_t count,loff_t * ppos)209 static ssize_t wfx_send_pds_write(struct file *file,
210 const char __user *user_buf,
211 size_t count, loff_t *ppos)
212 {
213 struct wfx_dev *wdev = file->private_data;
214 char *buf;
215 int ret;
216
217 if (*ppos != 0) {
218 dev_dbg(wdev->dev, "PDS data must be written in one transaction");
219 return -EBUSY;
220 }
221 buf = memdup_user(user_buf, count);
222 if (IS_ERR(buf))
223 return PTR_ERR(buf);
224 *ppos = *ppos + count;
225 ret = wfx_send_pds(wdev, buf, count);
226 kfree(buf);
227 if (ret < 0)
228 return ret;
229 return count;
230 }
231
232 static const struct file_operations wfx_send_pds_fops = {
233 .open = simple_open,
234 .write = wfx_send_pds_write,
235 };
236
237 struct dbgfs_hif_msg {
238 struct wfx_dev *wdev;
239 struct completion complete;
240 u8 reply[1024];
241 int ret;
242 };
243
wfx_send_hif_msg_write(struct file * file,const char __user * user_buf,size_t count,loff_t * ppos)244 static ssize_t wfx_send_hif_msg_write(struct file *file,
245 const char __user *user_buf,
246 size_t count, loff_t *ppos)
247 {
248 struct dbgfs_hif_msg *context = file->private_data;
249 struct wfx_dev *wdev = context->wdev;
250 struct hif_msg *request;
251
252 if (completion_done(&context->complete)) {
253 dev_dbg(wdev->dev, "read previous result before start a new one\n");
254 return -EBUSY;
255 }
256 if (count < sizeof(struct hif_msg))
257 return -EINVAL;
258
259 /* wfx_cmd_send() checks that reply buffer is wide enough, but does not
260 * return precise length read. User have to know how many bytes should
261 * be read. Filling reply buffer with a memory pattern may help user.
262 */
263 memset(context->reply, 0xFF, sizeof(context->reply));
264 request = memdup_user(user_buf, count);
265 if (IS_ERR(request))
266 return PTR_ERR(request);
267 if (le16_to_cpu(request->len) != count) {
268 kfree(request);
269 return -EINVAL;
270 }
271 context->ret = wfx_cmd_send(wdev, request, context->reply,
272 sizeof(context->reply), false);
273
274 kfree(request);
275 complete(&context->complete);
276 return count;
277 }
278
wfx_send_hif_msg_read(struct file * file,char __user * user_buf,size_t count,loff_t * ppos)279 static ssize_t wfx_send_hif_msg_read(struct file *file, char __user *user_buf,
280 size_t count, loff_t *ppos)
281 {
282 struct dbgfs_hif_msg *context = file->private_data;
283 int ret;
284
285 if (count > sizeof(context->reply))
286 return -EINVAL;
287 ret = wait_for_completion_interruptible(&context->complete);
288 if (ret)
289 return ret;
290 if (context->ret < 0)
291 return context->ret;
292 /* Be careful, write() is waiting for a full message while read()
293 * only returns a payload
294 */
295 if (copy_to_user(user_buf, context->reply, count))
296 return -EFAULT;
297
298 return count;
299 }
300
wfx_send_hif_msg_open(struct inode * inode,struct file * file)301 static int wfx_send_hif_msg_open(struct inode *inode, struct file *file)
302 {
303 struct dbgfs_hif_msg *context = kzalloc(sizeof(*context), GFP_KERNEL);
304
305 if (!context)
306 return -ENOMEM;
307 context->wdev = inode->i_private;
308 init_completion(&context->complete);
309 file->private_data = context;
310 return 0;
311 }
312
wfx_send_hif_msg_release(struct inode * inode,struct file * file)313 static int wfx_send_hif_msg_release(struct inode *inode, struct file *file)
314 {
315 struct dbgfs_hif_msg *context = file->private_data;
316
317 kfree(context);
318 return 0;
319 }
320
321 static const struct file_operations wfx_send_hif_msg_fops = {
322 .open = wfx_send_hif_msg_open,
323 .release = wfx_send_hif_msg_release,
324 .write = wfx_send_hif_msg_write,
325 .read = wfx_send_hif_msg_read,
326 };
327
wfx_ps_timeout_set(void * data,u64 val)328 static int wfx_ps_timeout_set(void *data, u64 val)
329 {
330 struct wfx_dev *wdev = (struct wfx_dev *)data;
331 struct wfx_vif *wvif;
332
333 wdev->force_ps_timeout = val;
334 wvif = NULL;
335 while ((wvif = wvif_iterate(wdev, wvif)) != NULL)
336 wfx_update_pm(wvif);
337 return 0;
338 }
339
wfx_ps_timeout_get(void * data,u64 * val)340 static int wfx_ps_timeout_get(void *data, u64 *val)
341 {
342 struct wfx_dev *wdev = (struct wfx_dev *)data;
343
344 *val = wdev->force_ps_timeout;
345 return 0;
346 }
347
348 DEFINE_DEBUGFS_ATTRIBUTE(wfx_ps_timeout_fops, wfx_ps_timeout_get, wfx_ps_timeout_set, "%lld\n");
349
wfx_debug_init(struct wfx_dev * wdev)350 int wfx_debug_init(struct wfx_dev *wdev)
351 {
352 struct dentry *d;
353
354 d = debugfs_create_dir("wfx", wdev->hw->wiphy->debugfsdir);
355 debugfs_create_file("counters", 0444, d, wdev, &wfx_counters_fops);
356 debugfs_create_file("rx_stats", 0444, d, wdev, &wfx_rx_stats_fops);
357 debugfs_create_file("tx_power_loop", 0444, d, wdev,
358 &wfx_tx_power_loop_fops);
359 debugfs_create_file("send_pds", 0200, d, wdev, &wfx_send_pds_fops);
360 debugfs_create_file("send_hif_msg", 0600, d, wdev,
361 &wfx_send_hif_msg_fops);
362 debugfs_create_file("ps_timeout", 0600, d, wdev, &wfx_ps_timeout_fops);
363
364 return 0;
365 }
366