nexmon – Blame information for rev 1

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1 office 1 /*
2 * Copyright (c) 2012 Broadcom Corporation
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 ANY
11 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
13 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
14 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15 */
16  
17 /* FWIL is the Firmware Interface Layer. In this module the support functions
18 * are located to set and get variables to and from the firmware.
19 */
20  
21 #include <linux/kernel.h>
22 #include <linux/netdevice.h>
23 #include <brcmu_utils.h>
24 #include <brcmu_wifi.h>
25 #include "core.h"
26 #include "bus.h"
27 #include "debug.h"
28 #include "tracepoint.h"
29 #include "fwil.h"
30 #include "proto.h"
31  
32  
33 #define MAX_HEX_DUMP_LEN 64
34  
35 #ifdef DEBUG
36 static const char * const brcmf_fil_errstr[] = {
37 "BCME_OK",
38 "BCME_ERROR",
39 "BCME_BADARG",
40 "BCME_BADOPTION",
41 "BCME_NOTUP",
42 "BCME_NOTDOWN",
43 "BCME_NOTAP",
44 "BCME_NOTSTA",
45 "BCME_BADKEYIDX",
46 "BCME_RADIOOFF",
47 "BCME_NOTBANDLOCKED",
48 "BCME_NOCLK",
49 "BCME_BADRATESET",
50 "BCME_BADBAND",
51 "BCME_BUFTOOSHORT",
52 "BCME_BUFTOOLONG",
53 "BCME_BUSY",
54 "BCME_NOTASSOCIATED",
55 "BCME_BADSSIDLEN",
56 "BCME_OUTOFRANGECHAN",
57 "BCME_BADCHAN",
58 "BCME_BADADDR",
59 "BCME_NORESOURCE",
60 "BCME_UNSUPPORTED",
61 "BCME_BADLEN",
62 "BCME_NOTREADY",
63 "BCME_EPERM",
64 "BCME_NOMEM",
65 "BCME_ASSOCIATED",
66 "BCME_RANGE",
67 "BCME_NOTFOUND",
68 "BCME_WME_NOT_ENABLED",
69 "BCME_TSPEC_NOTFOUND",
70 "BCME_ACM_NOTSUPPORTED",
71 "BCME_NOT_WME_ASSOCIATION",
72 "BCME_SDIO_ERROR",
73 "BCME_DONGLE_DOWN",
74 "BCME_VERSION",
75 "BCME_TXFAIL",
76 "BCME_RXFAIL",
77 "BCME_NODEVICE",
78 "BCME_NMODE_DISABLED",
79 "BCME_NONRESIDENT",
80 "BCME_SCANREJECT",
81 "BCME_USAGE_ERROR",
82 "BCME_IOCTL_ERROR",
83 "BCME_SERIAL_PORT_ERR",
84 "BCME_DISABLED",
85 "BCME_DECERR",
86 "BCME_ENCERR",
87 "BCME_MICERR",
88 "BCME_REPLAY",
89 "BCME_IE_NOTFOUND",
90 };
91  
92 static const char *brcmf_fil_get_errstr(u32 err)
93 {
94 if (err >= ARRAY_SIZE(brcmf_fil_errstr))
95 return "(unknown)";
96  
97 return brcmf_fil_errstr[err];
98 }
99 #else
100 static const char *brcmf_fil_get_errstr(u32 err)
101 {
102 return "";
103 }
104 #endif /* DEBUG */
105  
106 static s32
107 brcmf_fil_cmd_data(struct brcmf_if *ifp, u32 cmd, void *data, u32 len, bool set)
108 {
109 struct brcmf_pub *drvr = ifp->drvr;
110 s32 err;
111  
112 if (drvr->bus_if->state != BRCMF_BUS_UP) {
113 brcmf_err("bus is down. we have nothing to do.\n");
114 return -EIO;
115 }
116  
117 if (data != NULL)
118 len = min_t(uint, len, BRCMF_DCMD_MAXLEN);
119 if (set)
120 err = brcmf_proto_set_dcmd(drvr, ifp->ifidx, cmd, data, len);
121 else
122 err = brcmf_proto_query_dcmd(drvr, ifp->ifidx, cmd, data, len);
123  
124 if (err >= 0)
125 return 0;
126  
127 brcmf_dbg(FIL, "Failed: %s (%d)\n",
128 brcmf_fil_get_errstr((u32)(-err)), err);
129  
130 return err;
131 }
132  
133 s32
134 brcmf_fil_cmd_data_set(struct brcmf_if *ifp, u32 cmd, void *data, u32 len)
135 {
136 s32 err;
137  
138 mutex_lock(&ifp->drvr->proto_block);
139  
140 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, len=%d\n", ifp->ifidx, cmd, len);
141 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
142 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
143  
144 err = brcmf_fil_cmd_data(ifp, cmd, data, len, true);
145 mutex_unlock(&ifp->drvr->proto_block);
146  
147 return err;
148 }
149  
150 s32
151 brcmf_fil_cmd_data_get(struct brcmf_if *ifp, u32 cmd, void *data, u32 len)
152 {
153 s32 err;
154  
155 mutex_lock(&ifp->drvr->proto_block);
156 err = brcmf_fil_cmd_data(ifp, cmd, data, len, false);
157  
158 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, len=%d\n", ifp->ifidx, cmd, len);
159 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
160 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
161  
162 mutex_unlock(&ifp->drvr->proto_block);
163  
164 return err;
165 }
166  
167  
168 s32
169 brcmf_fil_cmd_int_set(struct brcmf_if *ifp, u32 cmd, u32 data)
170 {
171 s32 err;
172 __le32 data_le = cpu_to_le32(data);
173  
174 mutex_lock(&ifp->drvr->proto_block);
175 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, data);
176 err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), true);
177 mutex_unlock(&ifp->drvr->proto_block);
178  
179 return err;
180 }
181  
182 s32
183 brcmf_fil_cmd_int_get(struct brcmf_if *ifp, u32 cmd, u32 *data)
184 {
185 s32 err;
186 __le32 data_le = cpu_to_le32(*data);
187  
188 mutex_lock(&ifp->drvr->proto_block);
189 err = brcmf_fil_cmd_data(ifp, cmd, &data_le, sizeof(data_le), false);
190 mutex_unlock(&ifp->drvr->proto_block);
191 *data = le32_to_cpu(data_le);
192 brcmf_dbg(FIL, "ifidx=%d, cmd=%d, value=%d\n", ifp->ifidx, cmd, *data);
193  
194 return err;
195 }
196  
197 static u32
198 brcmf_create_iovar(char *name, const char *data, u32 datalen,
199 char *buf, u32 buflen)
200 {
201 u32 len;
202  
203 len = strlen(name) + 1;
204  
205 if ((len + datalen) > buflen)
206 return 0;
207  
208 memcpy(buf, name, len);
209  
210 /* append data onto the end of the name string */
211 if (data && datalen)
212 memcpy(&buf[len], data, datalen);
213  
214 return len + datalen;
215 }
216  
217  
218 s32
219 brcmf_fil_iovar_data_set(struct brcmf_if *ifp, char *name, const void *data,
220 u32 len)
221 {
222 struct brcmf_pub *drvr = ifp->drvr;
223 s32 err;
224 u32 buflen;
225  
226 mutex_lock(&drvr->proto_block);
227  
228 brcmf_dbg(FIL, "ifidx=%d, name=%s, len=%d\n", ifp->ifidx, name, len);
229 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
230 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
231  
232 buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf,
233 sizeof(drvr->proto_buf));
234 if (buflen) {
235 err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf,
236 buflen, true);
237 } else {
238 err = -EPERM;
239 brcmf_err("Creating iovar failed\n");
240 }
241  
242 mutex_unlock(&drvr->proto_block);
243 return err;
244 }
245  
246 s32
247 brcmf_fil_iovar_data_get(struct brcmf_if *ifp, char *name, void *data,
248 u32 len)
249 {
250 struct brcmf_pub *drvr = ifp->drvr;
251 s32 err;
252 u32 buflen;
253  
254 mutex_lock(&drvr->proto_block);
255  
256 buflen = brcmf_create_iovar(name, data, len, drvr->proto_buf,
257 sizeof(drvr->proto_buf));
258 if (buflen) {
259 err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf,
260 buflen, false);
261 if (err == 0)
262 memcpy(data, drvr->proto_buf, len);
263 } else {
264 err = -EPERM;
265 brcmf_err("Creating iovar failed\n");
266 }
267  
268 brcmf_dbg(FIL, "ifidx=%d, name=%s, len=%d\n", ifp->ifidx, name, len);
269 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
270 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
271  
272 mutex_unlock(&drvr->proto_block);
273 return err;
274 }
275  
276 s32
277 brcmf_fil_iovar_int_set(struct brcmf_if *ifp, char *name, u32 data)
278 {
279 __le32 data_le = cpu_to_le32(data);
280  
281 return brcmf_fil_iovar_data_set(ifp, name, &data_le, sizeof(data_le));
282 }
283  
284 s32
285 brcmf_fil_iovar_int_get(struct brcmf_if *ifp, char *name, u32 *data)
286 {
287 __le32 data_le = cpu_to_le32(*data);
288 s32 err;
289  
290 err = brcmf_fil_iovar_data_get(ifp, name, &data_le, sizeof(data_le));
291 if (err == 0)
292 *data = le32_to_cpu(data_le);
293 return err;
294 }
295  
296 static u32
297 brcmf_create_bsscfg(s32 bsscfgidx, char *name, char *data, u32 datalen,
298 char *buf, u32 buflen)
299 {
300 const s8 *prefix = "bsscfg:";
301 s8 *p;
302 u32 prefixlen;
303 u32 namelen;
304 u32 iolen;
305 __le32 bsscfgidx_le;
306  
307 if (bsscfgidx == 0)
308 return brcmf_create_iovar(name, data, datalen, buf, buflen);
309  
310 prefixlen = strlen(prefix);
311 namelen = strlen(name) + 1; /* lengh of iovar name + null */
312 iolen = prefixlen + namelen + sizeof(bsscfgidx_le) + datalen;
313  
314 if (buflen < iolen) {
315 brcmf_err("buffer is too short\n");
316 return 0;
317 }
318  
319 p = buf;
320  
321 /* copy prefix, no null */
322 memcpy(p, prefix, prefixlen);
323 p += prefixlen;
324  
325 /* copy iovar name including null */
326 memcpy(p, name, namelen);
327 p += namelen;
328  
329 /* bss config index as first data */
330 bsscfgidx_le = cpu_to_le32(bsscfgidx);
331 memcpy(p, &bsscfgidx_le, sizeof(bsscfgidx_le));
332 p += sizeof(bsscfgidx_le);
333  
334 /* parameter buffer follows */
335 if (datalen)
336 memcpy(p, data, datalen);
337  
338 return iolen;
339 }
340  
341 s32
342 brcmf_fil_bsscfg_data_set(struct brcmf_if *ifp, char *name,
343 void *data, u32 len)
344 {
345 struct brcmf_pub *drvr = ifp->drvr;
346 s32 err;
347 u32 buflen;
348  
349 mutex_lock(&drvr->proto_block);
350  
351 brcmf_dbg(FIL, "ifidx=%d, bsscfgidx=%d, name=%s, len=%d\n", ifp->ifidx,
352 ifp->bsscfgidx, name, len);
353 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
354 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
355  
356 buflen = brcmf_create_bsscfg(ifp->bsscfgidx, name, data, len,
357 drvr->proto_buf, sizeof(drvr->proto_buf));
358 if (buflen) {
359 err = brcmf_fil_cmd_data(ifp, BRCMF_C_SET_VAR, drvr->proto_buf,
360 buflen, true);
361 } else {
362 err = -EPERM;
363 brcmf_err("Creating bsscfg failed\n");
364 }
365  
366 mutex_unlock(&drvr->proto_block);
367 return err;
368 }
369  
370 s32
371 brcmf_fil_bsscfg_data_get(struct brcmf_if *ifp, char *name,
372 void *data, u32 len)
373 {
374 struct brcmf_pub *drvr = ifp->drvr;
375 s32 err;
376 u32 buflen;
377  
378 mutex_lock(&drvr->proto_block);
379  
380 buflen = brcmf_create_bsscfg(ifp->bsscfgidx, name, data, len,
381 drvr->proto_buf, sizeof(drvr->proto_buf));
382 if (buflen) {
383 err = brcmf_fil_cmd_data(ifp, BRCMF_C_GET_VAR, drvr->proto_buf,
384 buflen, false);
385 if (err == 0)
386 memcpy(data, drvr->proto_buf, len);
387 } else {
388 err = -EPERM;
389 brcmf_err("Creating bsscfg failed\n");
390 }
391 brcmf_dbg(FIL, "ifidx=%d, bsscfgidx=%d, name=%s, len=%d\n", ifp->ifidx,
392 ifp->bsscfgidx, name, len);
393 brcmf_dbg_hex_dump(BRCMF_FIL_ON(), data,
394 min_t(uint, len, MAX_HEX_DUMP_LEN), "data\n");
395  
396 mutex_unlock(&drvr->proto_block);
397 return err;
398  
399 }
400  
401 s32
402 brcmf_fil_bsscfg_int_set(struct brcmf_if *ifp, char *name, u32 data)
403 {
404 __le32 data_le = cpu_to_le32(data);
405  
406 return brcmf_fil_bsscfg_data_set(ifp, name, &data_le,
407 sizeof(data_le));
408 }
409  
410 s32
411 brcmf_fil_bsscfg_int_get(struct brcmf_if *ifp, char *name, u32 *data)
412 {
413 __le32 data_le = cpu_to_le32(*data);
414 s32 err;
415  
416 err = brcmf_fil_bsscfg_data_get(ifp, name, &data_le,
417 sizeof(data_le));
418 if (err == 0)
419 *data = le32_to_cpu(data_le);
420 return err;
421 }