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7#include "api/commands.h"
8#include "debugfs.h"
9#include "dbg.h"
10#include <linux/seq_file.h>
11
12#define FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \
13struct dbgfs_##name##_data { \
14 argtype *arg; \
15 bool read_done; \
16 ssize_t rlen; \
17 char rbuf[buflen]; \
18}; \
19static int _iwl_dbgfs_##name##_open(struct inode *inode, \
20 struct file *file) \
21{ \
22 struct dbgfs_##name##_data *data; \
23 \
24 data = kzalloc(sizeof(*data), GFP_KERNEL); \
25 if (!data) \
26 return -ENOMEM; \
27 \
28 data->read_done = false; \
29 data->arg = inode->i_private; \
30 file->private_data = data; \
31 \
32 return 0; \
33}
34
35#define FWRT_DEBUGFS_READ_WRAPPER(name) \
36static ssize_t _iwl_dbgfs_##name##_read(struct file *file, \
37 char __user *user_buf, \
38 size_t count, loff_t *ppos) \
39{ \
40 struct dbgfs_##name##_data *data = file->private_data; \
41 \
42 if (!data->read_done) { \
43 data->read_done = true; \
44 data->rlen = iwl_dbgfs_##name##_read(data->arg, \
45 sizeof(data->rbuf),\
46 data->rbuf); \
47 } \
48 \
49 if (data->rlen < 0) \
50 return data->rlen; \
51 return simple_read_from_buffer(user_buf, count, ppos, \
52 data->rbuf, data->rlen); \
53}
54
55static int _iwl_dbgfs_release(struct inode *inode, struct file *file)
56{
57 kfree(file->private_data);
58
59 return 0;
60}
61
62#define _FWRT_DEBUGFS_READ_FILE_OPS(name, buflen, argtype) \
63FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \
64FWRT_DEBUGFS_READ_WRAPPER(name) \
65static const struct file_operations iwl_dbgfs_##name##_ops = { \
66 .read = _iwl_dbgfs_##name##_read, \
67 .open = _iwl_dbgfs_##name##_open, \
68 .llseek = generic_file_llseek, \
69 .release = _iwl_dbgfs_release, \
70}
71
72#define FWRT_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype) \
73static ssize_t _iwl_dbgfs_##name##_write(struct file *file, \
74 const char __user *user_buf, \
75 size_t count, loff_t *ppos) \
76{ \
77 argtype *arg = \
78 ((struct dbgfs_##name##_data *)file->private_data)->arg;\
79 char buf[buflen] = {}; \
80 size_t buf_size = min(count, sizeof(buf) - 1); \
81 \
82 if (copy_from_user(buf, user_buf, buf_size)) \
83 return -EFAULT; \
84 \
85 return iwl_dbgfs_##name##_write(arg, buf, buf_size); \
86}
87
88#define _FWRT_DEBUGFS_READ_WRITE_FILE_OPS(name, buflen, argtype) \
89FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \
90FWRT_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype) \
91FWRT_DEBUGFS_READ_WRAPPER(name) \
92static const struct file_operations iwl_dbgfs_##name##_ops = { \
93 .write = _iwl_dbgfs_##name##_write, \
94 .read = _iwl_dbgfs_##name##_read, \
95 .open = _iwl_dbgfs_##name##_open, \
96 .llseek = generic_file_llseek, \
97 .release = _iwl_dbgfs_release, \
98}
99
100#define _FWRT_DEBUGFS_WRITE_FILE_OPS(name, buflen, argtype) \
101FWRT_DEBUGFS_OPEN_WRAPPER(name, buflen, argtype) \
102FWRT_DEBUGFS_WRITE_WRAPPER(name, buflen, argtype) \
103static const struct file_operations iwl_dbgfs_##name##_ops = { \
104 .write = _iwl_dbgfs_##name##_write, \
105 .open = _iwl_dbgfs_##name##_open, \
106 .llseek = generic_file_llseek, \
107 .release = _iwl_dbgfs_release, \
108}
109
110#define FWRT_DEBUGFS_READ_FILE_OPS(name, bufsz) \
111 _FWRT_DEBUGFS_READ_FILE_OPS(name, bufsz, struct iwl_fw_runtime)
112
113#define FWRT_DEBUGFS_WRITE_FILE_OPS(name, bufsz) \
114 _FWRT_DEBUGFS_WRITE_FILE_OPS(name, bufsz, struct iwl_fw_runtime)
115
116#define FWRT_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz) \
117 _FWRT_DEBUGFS_READ_WRITE_FILE_OPS(name, bufsz, struct iwl_fw_runtime)
118
119#define FWRT_DEBUGFS_ADD_FILE_ALIAS(alias, name, parent, mode) do { \
120 debugfs_create_file(alias, mode, parent, fwrt, \
121 &iwl_dbgfs_##name##_ops); \
122 } while (0)
123#define FWRT_DEBUGFS_ADD_FILE(name, parent, mode) \
124 FWRT_DEBUGFS_ADD_FILE_ALIAS(#name, name, parent, mode)
125
126static int iwl_fw_send_timestamp_marker_cmd(struct iwl_fw_runtime *fwrt)
127{
128 struct iwl_mvm_marker marker = {
129 .dw_len = sizeof(struct iwl_mvm_marker) / 4,
130 .marker_id = MARKER_ID_SYNC_CLOCK,
131
132
133
134
135 .timestamp = cpu_to_le64(fwrt->timestamp.seq++),
136 };
137
138 struct iwl_host_cmd hcmd = {
139 .id = MARKER_CMD,
140 .flags = CMD_ASYNC,
141 .data[0] = &marker,
142 .len[0] = sizeof(marker),
143 };
144
145 return iwl_trans_send_cmd(fwrt->trans, &hcmd);
146}
147
148static int iwl_dbgfs_enabled_severities_write(struct iwl_fw_runtime *fwrt,
149 char *buf, size_t count)
150{
151 struct iwl_dbg_host_event_cfg_cmd event_cfg;
152 struct iwl_host_cmd hcmd = {
153 .id = iwl_cmd_id(HOST_EVENT_CFG, DEBUG_GROUP, 0),
154 .flags = CMD_ASYNC,
155 .data[0] = &event_cfg,
156 .len[0] = sizeof(event_cfg),
157 };
158 u32 enabled_severities;
159 int ret = kstrtou32(buf, 10, &enabled_severities);
160
161 if (ret < 0)
162 return ret;
163
164 event_cfg.enabled_severities = cpu_to_le32(enabled_severities);
165
166 ret = iwl_trans_send_cmd(fwrt->trans, &hcmd);
167 IWL_INFO(fwrt,
168 "sent host event cfg with enabled_severities: %u, ret: %d\n",
169 enabled_severities, ret);
170
171 return ret ?: count;
172}
173
174FWRT_DEBUGFS_WRITE_FILE_OPS(enabled_severities, 16);
175
176static void iwl_fw_timestamp_marker_wk(struct work_struct *work)
177{
178 int ret;
179 struct iwl_fw_runtime *fwrt =
180 container_of(work, struct iwl_fw_runtime, timestamp.wk.work);
181 unsigned long delay = fwrt->timestamp.delay;
182
183 ret = iwl_fw_send_timestamp_marker_cmd(fwrt);
184 if (!ret && delay)
185 schedule_delayed_work(&fwrt->timestamp.wk,
186 round_jiffies_relative(delay));
187 else
188 IWL_INFO(fwrt,
189 "stopping timestamp_marker, ret: %d, delay: %u\n",
190 ret, jiffies_to_msecs(delay) / 1000);
191}
192
193void iwl_fw_trigger_timestamp(struct iwl_fw_runtime *fwrt, u32 delay)
194{
195 IWL_INFO(fwrt,
196 "starting timestamp_marker trigger with delay: %us\n",
197 delay);
198
199 iwl_fw_cancel_timestamp(fwrt);
200
201 fwrt->timestamp.delay = msecs_to_jiffies(delay * 1000);
202
203 schedule_delayed_work(&fwrt->timestamp.wk,
204 round_jiffies_relative(fwrt->timestamp.delay));
205}
206
207static ssize_t iwl_dbgfs_timestamp_marker_write(struct iwl_fw_runtime *fwrt,
208 char *buf, size_t count)
209{
210 int ret;
211 u32 delay;
212
213 ret = kstrtou32(buf, 10, &delay);
214 if (ret < 0)
215 return ret;
216
217 iwl_fw_trigger_timestamp(fwrt, delay);
218
219 return count;
220}
221
222static ssize_t iwl_dbgfs_timestamp_marker_read(struct iwl_fw_runtime *fwrt,
223 size_t size, char *buf)
224{
225 u32 delay_secs = jiffies_to_msecs(fwrt->timestamp.delay) / 1000;
226
227 return scnprintf(buf, size, "%d\n", delay_secs);
228}
229
230FWRT_DEBUGFS_READ_WRITE_FILE_OPS(timestamp_marker, 16);
231
232struct hcmd_write_data {
233 __be32 cmd_id;
234 __be32 flags;
235 __be16 length;
236 u8 data[];
237} __packed;
238
239static ssize_t iwl_dbgfs_send_hcmd_write(struct iwl_fw_runtime *fwrt, char *buf,
240 size_t count)
241{
242 size_t header_size = (sizeof(u32) * 2 + sizeof(u16)) * 2;
243 size_t data_size = (count - 1) / 2;
244 int ret;
245 struct hcmd_write_data *data;
246 struct iwl_host_cmd hcmd = {
247 .len = { 0, },
248 .data = { NULL, },
249 };
250
251 if (fwrt->ops && fwrt->ops->fw_running &&
252 !fwrt->ops->fw_running(fwrt->ops_ctx))
253 return -EIO;
254
255 if (count < header_size + 1 || count > 1024 * 4)
256 return -EINVAL;
257
258 data = kmalloc(data_size, GFP_KERNEL);
259 if (!data)
260 return -ENOMEM;
261
262 ret = hex2bin((u8 *)data, buf, data_size);
263 if (ret)
264 goto out;
265
266 hcmd.id = be32_to_cpu(data->cmd_id);
267 hcmd.flags = be32_to_cpu(data->flags);
268 hcmd.len[0] = be16_to_cpu(data->length);
269 hcmd.data[0] = data->data;
270
271 if (count != header_size + hcmd.len[0] * 2 + 1) {
272 IWL_ERR(fwrt,
273 "host command data size does not match header length\n");
274 ret = -EINVAL;
275 goto out;
276 }
277
278 if (fwrt->ops && fwrt->ops->send_hcmd)
279 ret = fwrt->ops->send_hcmd(fwrt->ops_ctx, &hcmd);
280 else
281 ret = -EPERM;
282
283 if (ret < 0)
284 goto out;
285
286 if (hcmd.flags & CMD_WANT_SKB)
287 iwl_free_resp(&hcmd);
288out:
289 kfree(data);
290 return ret ?: count;
291}
292
293FWRT_DEBUGFS_WRITE_FILE_OPS(send_hcmd, 512);
294
295static ssize_t iwl_dbgfs_fw_dbg_domain_read(struct iwl_fw_runtime *fwrt,
296 size_t size, char *buf)
297{
298 return scnprintf(buf, size, "0x%08x\n",
299 fwrt->trans->dbg.domains_bitmap);
300}
301
302FWRT_DEBUGFS_READ_FILE_OPS(fw_dbg_domain, 20);
303
304struct iwl_dbgfs_fw_info_priv {
305 struct iwl_fw_runtime *fwrt;
306};
307
308struct iwl_dbgfs_fw_info_state {
309 loff_t pos;
310};
311
312static void *iwl_dbgfs_fw_info_seq_next(struct seq_file *seq,
313 void *v, loff_t *pos)
314{
315 struct iwl_dbgfs_fw_info_state *state = v;
316 struct iwl_dbgfs_fw_info_priv *priv = seq->private;
317 const struct iwl_fw *fw = priv->fwrt->fw;
318
319 *pos = ++state->pos;
320 if (*pos >= fw->ucode_capa.n_cmd_versions)
321 return NULL;
322
323 return state;
324}
325
326static void iwl_dbgfs_fw_info_seq_stop(struct seq_file *seq,
327 void *v)
328{
329 kfree(v);
330}
331
332static void *iwl_dbgfs_fw_info_seq_start(struct seq_file *seq, loff_t *pos)
333{
334 struct iwl_dbgfs_fw_info_priv *priv = seq->private;
335 const struct iwl_fw *fw = priv->fwrt->fw;
336 struct iwl_dbgfs_fw_info_state *state;
337
338 if (*pos >= fw->ucode_capa.n_cmd_versions)
339 return NULL;
340
341 state = kzalloc(sizeof(*state), GFP_KERNEL);
342 if (!state)
343 return NULL;
344 state->pos = *pos;
345 return state;
346};
347
348static int iwl_dbgfs_fw_info_seq_show(struct seq_file *seq, void *v)
349{
350 struct iwl_dbgfs_fw_info_state *state = v;
351 struct iwl_dbgfs_fw_info_priv *priv = seq->private;
352 const struct iwl_fw *fw = priv->fwrt->fw;
353 const struct iwl_fw_cmd_version *ver;
354 u32 cmd_id;
355
356 if (!state->pos)
357 seq_puts(seq, "fw_api_ver:\n");
358
359 ver = &fw->ucode_capa.cmd_versions[state->pos];
360
361 cmd_id = iwl_cmd_id(ver->cmd, ver->group, 0);
362
363 seq_printf(seq, " 0x%04x:\n", cmd_id);
364 seq_printf(seq, " name: %s\n",
365 iwl_get_cmd_string(priv->fwrt->trans, cmd_id));
366 seq_printf(seq, " cmd_ver: %d\n", ver->cmd_ver);
367 seq_printf(seq, " notif_ver: %d\n", ver->notif_ver);
368 return 0;
369}
370
371static const struct seq_operations iwl_dbgfs_info_seq_ops = {
372 .start = iwl_dbgfs_fw_info_seq_start,
373 .next = iwl_dbgfs_fw_info_seq_next,
374 .stop = iwl_dbgfs_fw_info_seq_stop,
375 .show = iwl_dbgfs_fw_info_seq_show,
376};
377
378static int iwl_dbgfs_fw_info_open(struct inode *inode, struct file *filp)
379{
380 struct iwl_dbgfs_fw_info_priv *priv;
381
382 priv = __seq_open_private(filp, &iwl_dbgfs_info_seq_ops,
383 sizeof(*priv));
384
385 if (!priv)
386 return -ENOMEM;
387
388 priv->fwrt = inode->i_private;
389 return 0;
390}
391
392static const struct file_operations iwl_dbgfs_fw_info_ops = {
393 .owner = THIS_MODULE,
394 .open = iwl_dbgfs_fw_info_open,
395 .read = seq_read,
396 .llseek = seq_lseek,
397 .release = seq_release_private,
398};
399
400void iwl_fwrt_dbgfs_register(struct iwl_fw_runtime *fwrt,
401 struct dentry *dbgfs_dir)
402{
403 INIT_DELAYED_WORK(&fwrt->timestamp.wk, iwl_fw_timestamp_marker_wk);
404 FWRT_DEBUGFS_ADD_FILE(timestamp_marker, dbgfs_dir, 0200);
405 FWRT_DEBUGFS_ADD_FILE(fw_info, dbgfs_dir, 0200);
406 FWRT_DEBUGFS_ADD_FILE(send_hcmd, dbgfs_dir, 0200);
407 FWRT_DEBUGFS_ADD_FILE(enabled_severities, dbgfs_dir, 0200);
408 FWRT_DEBUGFS_ADD_FILE(fw_dbg_domain, dbgfs_dir, 0400);
409}
410
