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6c8a9d952a01b6f5ac1a5c531dde1c64f2b162ee
[deliverable/linux.git] / drivers / net / wireless / libertas / cmd.c
1 /**
2 * This file contains the handling of command.
3 * It prepares command and sends it to firmware when it is ready.
4 */
5
6 #include <linux/kfifo.h>
7 #include <linux/sched.h>
8 #include <linux/slab.h>
9
10 #include "decl.h"
11 #include "cfg.h"
12 #include "cmd.h"
13
14
15 static struct cmd_ctrl_node *lbs_get_cmd_ctrl_node(struct lbs_private *priv);
16
17 /**
18 * @brief Simple callback that copies response back into command
19 *
20 * @param priv A pointer to struct lbs_private structure
21 * @param extra A pointer to the original command structure for which
22 * 'resp' is a response
23 * @param resp A pointer to the command response
24 *
25 * @return 0 on success, error on failure
26 */
27 int lbs_cmd_copyback(struct lbs_private *priv, unsigned long extra,
28 struct cmd_header *resp)
29 {
30 struct cmd_header *buf = (void *)extra;
31 uint16_t copy_len;
32
33 copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size));
34 memcpy(buf, resp, copy_len);
35 return 0;
36 }
37 EXPORT_SYMBOL_GPL(lbs_cmd_copyback);
38
39 /**
40 * @brief Simple callback that ignores the result. Use this if
41 * you just want to send a command to the hardware, but don't
42 * care for the result.
43 *
44 * @param priv ignored
45 * @param extra ignored
46 * @param resp ignored
47 *
48 * @return 0 for success
49 */
50 static int lbs_cmd_async_callback(struct lbs_private *priv, unsigned long extra,
51 struct cmd_header *resp)
52 {
53 return 0;
54 }
55
56
57 /**
58 * @brief Checks whether a command is allowed in Power Save mode
59 *
60 * @param command the command ID
61 * @return 1 if allowed, 0 if not allowed
62 */
63 static u8 is_command_allowed_in_ps(u16 cmd)
64 {
65 switch (cmd) {
66 case CMD_802_11_RSSI:
67 return 1;
68 case CMD_802_11_HOST_SLEEP_CFG:
69 return 1;
70 default:
71 break;
72 }
73 return 0;
74 }
75
76 /**
77 * @brief This function checks if the command is allowed.
78 *
79 * @param priv A pointer to lbs_private structure
80 * @return allowed or not allowed.
81 */
82
83 static int lbs_is_cmd_allowed(struct lbs_private *priv)
84 {
85 int ret = 1;
86
87 lbs_deb_enter(LBS_DEB_CMD);
88
89 if (!priv->is_auto_deep_sleep_enabled) {
90 if (priv->is_deep_sleep) {
91 lbs_deb_cmd("command not allowed in deep sleep\n");
92 ret = 0;
93 }
94 }
95
96 lbs_deb_leave(LBS_DEB_CMD);
97 return ret;
98 }
99
100 /**
101 * @brief Updates the hardware details like MAC address and regulatory region
102 *
103 * @param priv A pointer to struct lbs_private structure
104 *
105 * @return 0 on success, error on failure
106 */
107 int lbs_update_hw_spec(struct lbs_private *priv)
108 {
109 struct cmd_ds_get_hw_spec cmd;
110 int ret = -1;
111 u32 i;
112
113 lbs_deb_enter(LBS_DEB_CMD);
114
115 memset(&cmd, 0, sizeof(cmd));
116 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
117 memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN);
118 ret = lbs_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd);
119 if (ret)
120 goto out;
121
122 priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo);
123
124 /* The firmware release is in an interesting format: the patch
125 * level is in the most significant nibble ... so fix that: */
126 priv->fwrelease = le32_to_cpu(cmd.fwrelease);
127 priv->fwrelease = (priv->fwrelease << 8) |
128 (priv->fwrelease >> 24 & 0xff);
129
130 /* Some firmware capabilities:
131 * CF card firmware 5.0.16p0: cap 0x00000303
132 * USB dongle firmware 5.110.17p2: cap 0x00000303
133 */
134 lbs_pr_info("%pM, fw %u.%u.%up%u, cap 0x%08x\n",
135 cmd.permanentaddr,
136 priv->fwrelease >> 24 & 0xff,
137 priv->fwrelease >> 16 & 0xff,
138 priv->fwrelease >> 8 & 0xff,
139 priv->fwrelease & 0xff,
140 priv->fwcapinfo);
141 lbs_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n",
142 cmd.hwifversion, cmd.version);
143
144 /* Clamp region code to 8-bit since FW spec indicates that it should
145 * only ever be 8-bit, even though the field size is 16-bit. Some firmware
146 * returns non-zero high 8 bits here.
147 *
148 * Firmware version 4.0.102 used in CF8381 has region code shifted. We
149 * need to check for this problem and handle it properly.
150 */
151 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V4)
152 priv->regioncode = (le16_to_cpu(cmd.regioncode) >> 8) & 0xFF;
153 else
154 priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF;
155
156 for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) {
157 /* use the region code to search for the index */
158 if (priv->regioncode == lbs_region_code_to_index[i])
159 break;
160 }
161
162 /* if it's unidentified region code, use the default (USA) */
163 if (i >= MRVDRV_MAX_REGION_CODE) {
164 priv->regioncode = 0x10;
165 lbs_pr_info("unidentified region code; using the default (USA)\n");
166 }
167
168 if (priv->current_addr[0] == 0xff)
169 memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN);
170
171 memcpy(priv->dev->dev_addr, priv->current_addr, ETH_ALEN);
172 if (priv->mesh_dev)
173 memcpy(priv->mesh_dev->dev_addr, priv->current_addr, ETH_ALEN);
174
175 out:
176 lbs_deb_leave(LBS_DEB_CMD);
177 return ret;
178 }
179
180 static int lbs_ret_host_sleep_cfg(struct lbs_private *priv, unsigned long dummy,
181 struct cmd_header *resp)
182 {
183 lbs_deb_enter(LBS_DEB_CMD);
184 if (priv->wol_criteria == EHS_REMOVE_WAKEUP) {
185 priv->is_host_sleep_configured = 0;
186 if (priv->psstate == PS_STATE_FULL_POWER) {
187 priv->is_host_sleep_activated = 0;
188 wake_up_interruptible(&priv->host_sleep_q);
189 }
190 } else {
191 priv->is_host_sleep_configured = 1;
192 }
193 lbs_deb_leave(LBS_DEB_CMD);
194 return 0;
195 }
196
197 int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria,
198 struct wol_config *p_wol_config)
199 {
200 struct cmd_ds_host_sleep cmd_config;
201 int ret;
202
203 cmd_config.hdr.size = cpu_to_le16(sizeof(cmd_config));
204 cmd_config.criteria = cpu_to_le32(criteria);
205 cmd_config.gpio = priv->wol_gpio;
206 cmd_config.gap = priv->wol_gap;
207
208 if (p_wol_config != NULL)
209 memcpy((uint8_t *)&cmd_config.wol_conf, (uint8_t *)p_wol_config,
210 sizeof(struct wol_config));
211 else
212 cmd_config.wol_conf.action = CMD_ACT_ACTION_NONE;
213
214 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_CFG, &cmd_config.hdr,
215 le16_to_cpu(cmd_config.hdr.size),
216 lbs_ret_host_sleep_cfg, 0);
217 if (!ret) {
218 if (p_wol_config)
219 memcpy((uint8_t *) p_wol_config,
220 (uint8_t *)&cmd_config.wol_conf,
221 sizeof(struct wol_config));
222 } else {
223 lbs_pr_info("HOST_SLEEP_CFG failed %d\n", ret);
224 }
225
226 return ret;
227 }
228 EXPORT_SYMBOL_GPL(lbs_host_sleep_cfg);
229
230 static int lbs_cmd_802_11_ps_mode(struct cmd_ds_command *cmd,
231 u16 cmd_action)
232 {
233 struct cmd_ds_802_11_ps_mode *psm = &cmd->params.psmode;
234
235 lbs_deb_enter(LBS_DEB_CMD);
236
237 cmd->command = cpu_to_le16(CMD_802_11_PS_MODE);
238 cmd->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_ps_mode) +
239 sizeof(struct cmd_header));
240 psm->action = cpu_to_le16(cmd_action);
241 psm->multipledtim = 0;
242 switch (cmd_action) {
243 case CMD_SUBCMD_ENTER_PS:
244 lbs_deb_cmd("PS command:" "SubCode- Enter PS\n");
245
246 psm->locallisteninterval = 0;
247 psm->nullpktinterval = 0;
248 psm->multipledtim =
249 cpu_to_le16(MRVDRV_DEFAULT_MULTIPLE_DTIM);
250 break;
251
252 case CMD_SUBCMD_EXIT_PS:
253 lbs_deb_cmd("PS command:" "SubCode- Exit PS\n");
254 break;
255
256 case CMD_SUBCMD_SLEEP_CONFIRMED:
257 lbs_deb_cmd("PS command: SubCode- sleep confirm\n");
258 break;
259
260 default:
261 break;
262 }
263
264 lbs_deb_leave(LBS_DEB_CMD);
265 return 0;
266 }
267
268 int lbs_cmd_802_11_sleep_params(struct lbs_private *priv, uint16_t cmd_action,
269 struct sleep_params *sp)
270 {
271 struct cmd_ds_802_11_sleep_params cmd;
272 int ret;
273
274 lbs_deb_enter(LBS_DEB_CMD);
275
276 if (cmd_action == CMD_ACT_GET) {
277 memset(&cmd, 0, sizeof(cmd));
278 } else {
279 cmd.error = cpu_to_le16(sp->sp_error);
280 cmd.offset = cpu_to_le16(sp->sp_offset);
281 cmd.stabletime = cpu_to_le16(sp->sp_stabletime);
282 cmd.calcontrol = sp->sp_calcontrol;
283 cmd.externalsleepclk = sp->sp_extsleepclk;
284 cmd.reserved = cpu_to_le16(sp->sp_reserved);
285 }
286 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
287 cmd.action = cpu_to_le16(cmd_action);
288
289 ret = lbs_cmd_with_response(priv, CMD_802_11_SLEEP_PARAMS, &cmd);
290
291 if (!ret) {
292 lbs_deb_cmd("error 0x%x, offset 0x%x, stabletime 0x%x, "
293 "calcontrol 0x%x extsleepclk 0x%x\n",
294 le16_to_cpu(cmd.error), le16_to_cpu(cmd.offset),
295 le16_to_cpu(cmd.stabletime), cmd.calcontrol,
296 cmd.externalsleepclk);
297
298 sp->sp_error = le16_to_cpu(cmd.error);
299 sp->sp_offset = le16_to_cpu(cmd.offset);
300 sp->sp_stabletime = le16_to_cpu(cmd.stabletime);
301 sp->sp_calcontrol = cmd.calcontrol;
302 sp->sp_extsleepclk = cmd.externalsleepclk;
303 sp->sp_reserved = le16_to_cpu(cmd.reserved);
304 }
305
306 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
307 return 0;
308 }
309
310 static int lbs_wait_for_ds_awake(struct lbs_private *priv)
311 {
312 int ret = 0;
313
314 lbs_deb_enter(LBS_DEB_CMD);
315
316 if (priv->is_deep_sleep) {
317 if (!wait_event_interruptible_timeout(priv->ds_awake_q,
318 !priv->is_deep_sleep, (10 * HZ))) {
319 lbs_pr_err("ds_awake_q: timer expired\n");
320 ret = -1;
321 }
322 }
323
324 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
325 return ret;
326 }
327
328 int lbs_set_deep_sleep(struct lbs_private *priv, int deep_sleep)
329 {
330 int ret = 0;
331
332 lbs_deb_enter(LBS_DEB_CMD);
333
334 if (deep_sleep) {
335 if (priv->is_deep_sleep != 1) {
336 lbs_deb_cmd("deep sleep: sleep\n");
337 BUG_ON(!priv->enter_deep_sleep);
338 ret = priv->enter_deep_sleep(priv);
339 if (!ret) {
340 netif_stop_queue(priv->dev);
341 netif_carrier_off(priv->dev);
342 }
343 } else {
344 lbs_pr_err("deep sleep: already enabled\n");
345 }
346 } else {
347 if (priv->is_deep_sleep) {
348 lbs_deb_cmd("deep sleep: wakeup\n");
349 BUG_ON(!priv->exit_deep_sleep);
350 ret = priv->exit_deep_sleep(priv);
351 if (!ret) {
352 ret = lbs_wait_for_ds_awake(priv);
353 if (ret)
354 lbs_pr_err("deep sleep: wakeup"
355 "failed\n");
356 }
357 }
358 }
359
360 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
361 return ret;
362 }
363
364 /**
365 * @brief Set an SNMP MIB value
366 *
367 * @param priv A pointer to struct lbs_private structure
368 * @param oid The OID to set in the firmware
369 * @param val Value to set the OID to
370 *
371 * @return 0 on success, error on failure
372 */
373 int lbs_set_snmp_mib(struct lbs_private *priv, u32 oid, u16 val)
374 {
375 struct cmd_ds_802_11_snmp_mib cmd;
376 int ret;
377
378 lbs_deb_enter(LBS_DEB_CMD);
379
380 memset(&cmd, 0, sizeof (cmd));
381 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
382 cmd.action = cpu_to_le16(CMD_ACT_SET);
383 cmd.oid = cpu_to_le16((u16) oid);
384
385 switch (oid) {
386 case SNMP_MIB_OID_BSS_TYPE:
387 cmd.bufsize = cpu_to_le16(sizeof(u8));
388 cmd.value[0] = val;
389 break;
390 case SNMP_MIB_OID_11D_ENABLE:
391 case SNMP_MIB_OID_FRAG_THRESHOLD:
392 case SNMP_MIB_OID_RTS_THRESHOLD:
393 case SNMP_MIB_OID_SHORT_RETRY_LIMIT:
394 case SNMP_MIB_OID_LONG_RETRY_LIMIT:
395 cmd.bufsize = cpu_to_le16(sizeof(u16));
396 *((__le16 *)(&cmd.value)) = cpu_to_le16(val);
397 break;
398 default:
399 lbs_deb_cmd("SNMP_CMD: (set) unhandled OID 0x%x\n", oid);
400 ret = -EINVAL;
401 goto out;
402 }
403
404 lbs_deb_cmd("SNMP_CMD: (set) oid 0x%x, oid size 0x%x, value 0x%x\n",
405 le16_to_cpu(cmd.oid), le16_to_cpu(cmd.bufsize), val);
406
407 ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
408
409 out:
410 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
411 return ret;
412 }
413
414 /**
415 * @brief Get an SNMP MIB value
416 *
417 * @param priv A pointer to struct lbs_private structure
418 * @param oid The OID to retrieve from the firmware
419 * @param out_val Location for the returned value
420 *
421 * @return 0 on success, error on failure
422 */
423 int lbs_get_snmp_mib(struct lbs_private *priv, u32 oid, u16 *out_val)
424 {
425 struct cmd_ds_802_11_snmp_mib cmd;
426 int ret;
427
428 lbs_deb_enter(LBS_DEB_CMD);
429
430 memset(&cmd, 0, sizeof (cmd));
431 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
432 cmd.action = cpu_to_le16(CMD_ACT_GET);
433 cmd.oid = cpu_to_le16(oid);
434
435 ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
436 if (ret)
437 goto out;
438
439 switch (le16_to_cpu(cmd.bufsize)) {
440 case sizeof(u8):
441 *out_val = cmd.value[0];
442 break;
443 case sizeof(u16):
444 *out_val = le16_to_cpu(*((__le16 *)(&cmd.value)));
445 break;
446 default:
447 lbs_deb_cmd("SNMP_CMD: (get) unhandled OID 0x%x size %d\n",
448 oid, le16_to_cpu(cmd.bufsize));
449 break;
450 }
451
452 out:
453 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
454 return ret;
455 }
456
457 /**
458 * @brief Get the min, max, and current TX power
459 *
460 * @param priv A pointer to struct lbs_private structure
461 * @param curlevel Current power level in dBm
462 * @param minlevel Minimum supported power level in dBm (optional)
463 * @param maxlevel Maximum supported power level in dBm (optional)
464 *
465 * @return 0 on success, error on failure
466 */
467 int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel,
468 s16 *maxlevel)
469 {
470 struct cmd_ds_802_11_rf_tx_power cmd;
471 int ret;
472
473 lbs_deb_enter(LBS_DEB_CMD);
474
475 memset(&cmd, 0, sizeof(cmd));
476 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
477 cmd.action = cpu_to_le16(CMD_ACT_GET);
478
479 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
480 if (ret == 0) {
481 *curlevel = le16_to_cpu(cmd.curlevel);
482 if (minlevel)
483 *minlevel = cmd.minlevel;
484 if (maxlevel)
485 *maxlevel = cmd.maxlevel;
486 }
487
488 lbs_deb_leave(LBS_DEB_CMD);
489 return ret;
490 }
491
492 /**
493 * @brief Set the TX power
494 *
495 * @param priv A pointer to struct lbs_private structure
496 * @param dbm The desired power level in dBm
497 *
498 * @return 0 on success, error on failure
499 */
500 int lbs_set_tx_power(struct lbs_private *priv, s16 dbm)
501 {
502 struct cmd_ds_802_11_rf_tx_power cmd;
503 int ret;
504
505 lbs_deb_enter(LBS_DEB_CMD);
506
507 memset(&cmd, 0, sizeof(cmd));
508 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
509 cmd.action = cpu_to_le16(CMD_ACT_SET);
510 cmd.curlevel = cpu_to_le16(dbm);
511
512 lbs_deb_cmd("SET_RF_TX_POWER: %d dBm\n", dbm);
513
514 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
515
516 lbs_deb_leave(LBS_DEB_CMD);
517 return ret;
518 }
519
520 static int lbs_cmd_802_11_monitor_mode(struct cmd_ds_command *cmd,
521 u16 cmd_action, void *pdata_buf)
522 {
523 struct cmd_ds_802_11_monitor_mode *monitor = &cmd->params.monitor;
524
525 cmd->command = cpu_to_le16(CMD_802_11_MONITOR_MODE);
526 cmd->size =
527 cpu_to_le16(sizeof(struct cmd_ds_802_11_monitor_mode) +
528 sizeof(struct cmd_header));
529
530 monitor->action = cpu_to_le16(cmd_action);
531 if (cmd_action == CMD_ACT_SET) {
532 monitor->mode =
533 cpu_to_le16((u16) (*(u32 *) pdata_buf));
534 }
535
536 return 0;
537 }
538
539 /**
540 * @brief Get the radio channel
541 *
542 * @param priv A pointer to struct lbs_private structure
543 *
544 * @return The channel on success, error on failure
545 */
546 static int lbs_get_channel(struct lbs_private *priv)
547 {
548 struct cmd_ds_802_11_rf_channel cmd;
549 int ret = 0;
550
551 lbs_deb_enter(LBS_DEB_CMD);
552
553 memset(&cmd, 0, sizeof(cmd));
554 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
555 cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_GET);
556
557 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
558 if (ret)
559 goto out;
560
561 ret = le16_to_cpu(cmd.channel);
562 lbs_deb_cmd("current radio channel is %d\n", ret);
563
564 out:
565 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
566 return ret;
567 }
568
569 int lbs_update_channel(struct lbs_private *priv)
570 {
571 int ret;
572
573 /* the channel in f/w could be out of sync; get the current channel */
574 lbs_deb_enter(LBS_DEB_ASSOC);
575
576 ret = lbs_get_channel(priv);
577 if (ret > 0) {
578 priv->channel = ret;
579 ret = 0;
580 }
581 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
582 return ret;
583 }
584
585 /**
586 * @brief Set the radio channel
587 *
588 * @param priv A pointer to struct lbs_private structure
589 * @param channel The desired channel, or 0 to clear a locked channel
590 *
591 * @return 0 on success, error on failure
592 */
593 int lbs_set_channel(struct lbs_private *priv, u8 channel)
594 {
595 struct cmd_ds_802_11_rf_channel cmd;
596 #ifdef DEBUG
597 u8 old_channel = priv->channel;
598 #endif
599 int ret = 0;
600
601 lbs_deb_enter(LBS_DEB_CMD);
602
603 memset(&cmd, 0, sizeof(cmd));
604 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
605 cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET);
606 cmd.channel = cpu_to_le16(channel);
607
608 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
609 if (ret)
610 goto out;
611
612 priv->channel = (uint8_t) le16_to_cpu(cmd.channel);
613 lbs_deb_cmd("channel switch from %d to %d\n", old_channel,
614 priv->channel);
615
616 out:
617 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
618 return ret;
619 }
620
621 static int lbs_cmd_reg_access(struct cmd_ds_command *cmdptr,
622 u8 cmd_action, void *pdata_buf)
623 {
624 struct lbs_offset_value *offval;
625
626 lbs_deb_enter(LBS_DEB_CMD);
627
628 offval = (struct lbs_offset_value *)pdata_buf;
629
630 switch (le16_to_cpu(cmdptr->command)) {
631 case CMD_MAC_REG_ACCESS:
632 {
633 struct cmd_ds_mac_reg_access *macreg;
634
635 cmdptr->size =
636 cpu_to_le16(sizeof (struct cmd_ds_mac_reg_access)
637 + sizeof(struct cmd_header));
638 macreg =
639 (struct cmd_ds_mac_reg_access *)&cmdptr->params.
640 macreg;
641
642 macreg->action = cpu_to_le16(cmd_action);
643 macreg->offset = cpu_to_le16((u16) offval->offset);
644 macreg->value = cpu_to_le32(offval->value);
645
646 break;
647 }
648
649 case CMD_BBP_REG_ACCESS:
650 {
651 struct cmd_ds_bbp_reg_access *bbpreg;
652
653 cmdptr->size =
654 cpu_to_le16(sizeof
655 (struct cmd_ds_bbp_reg_access)
656 + sizeof(struct cmd_header));
657 bbpreg =
658 (struct cmd_ds_bbp_reg_access *)&cmdptr->params.
659 bbpreg;
660
661 bbpreg->action = cpu_to_le16(cmd_action);
662 bbpreg->offset = cpu_to_le16((u16) offval->offset);
663 bbpreg->value = (u8) offval->value;
664
665 break;
666 }
667
668 case CMD_RF_REG_ACCESS:
669 {
670 struct cmd_ds_rf_reg_access *rfreg;
671
672 cmdptr->size =
673 cpu_to_le16(sizeof
674 (struct cmd_ds_rf_reg_access) +
675 sizeof(struct cmd_header));
676 rfreg =
677 (struct cmd_ds_rf_reg_access *)&cmdptr->params.
678 rfreg;
679
680 rfreg->action = cpu_to_le16(cmd_action);
681 rfreg->offset = cpu_to_le16((u16) offval->offset);
682 rfreg->value = (u8) offval->value;
683
684 break;
685 }
686
687 default:
688 break;
689 }
690
691 lbs_deb_leave(LBS_DEB_CMD);
692 return 0;
693 }
694
695 static void lbs_queue_cmd(struct lbs_private *priv,
696 struct cmd_ctrl_node *cmdnode)
697 {
698 unsigned long flags;
699 int addtail = 1;
700
701 lbs_deb_enter(LBS_DEB_HOST);
702
703 if (!cmdnode) {
704 lbs_deb_host("QUEUE_CMD: cmdnode is NULL\n");
705 goto done;
706 }
707 if (!cmdnode->cmdbuf->size) {
708 lbs_deb_host("DNLD_CMD: cmd size is zero\n");
709 goto done;
710 }
711 cmdnode->result = 0;
712
713 /* Exit_PS command needs to be queued in the header always. */
714 if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_PS_MODE) {
715 struct cmd_ds_802_11_ps_mode *psm = (void *) &cmdnode->cmdbuf[1];
716
717 if (psm->action == cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
718 if (priv->psstate != PS_STATE_FULL_POWER)
719 addtail = 0;
720 }
721 }
722
723 if (le16_to_cpu(cmdnode->cmdbuf->command) ==
724 CMD_802_11_WAKEUP_CONFIRM)
725 addtail = 0;
726
727 spin_lock_irqsave(&priv->driver_lock, flags);
728
729 if (addtail)
730 list_add_tail(&cmdnode->list, &priv->cmdpendingq);
731 else
732 list_add(&cmdnode->list, &priv->cmdpendingq);
733
734 spin_unlock_irqrestore(&priv->driver_lock, flags);
735
736 lbs_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n",
737 le16_to_cpu(cmdnode->cmdbuf->command));
738
739 done:
740 lbs_deb_leave(LBS_DEB_HOST);
741 }
742
743 static void lbs_submit_command(struct lbs_private *priv,
744 struct cmd_ctrl_node *cmdnode)
745 {
746 unsigned long flags;
747 struct cmd_header *cmd;
748 uint16_t cmdsize;
749 uint16_t command;
750 int timeo = 3 * HZ;
751 int ret;
752
753 lbs_deb_enter(LBS_DEB_HOST);
754
755 cmd = cmdnode->cmdbuf;
756
757 spin_lock_irqsave(&priv->driver_lock, flags);
758 priv->cur_cmd = cmdnode;
759 priv->cur_cmd_retcode = 0;
760 spin_unlock_irqrestore(&priv->driver_lock, flags);
761
762 cmdsize = le16_to_cpu(cmd->size);
763 command = le16_to_cpu(cmd->command);
764
765 /* These commands take longer */
766 if (command == CMD_802_11_SCAN || command == CMD_802_11_ASSOCIATE)
767 timeo = 5 * HZ;
768
769 lbs_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n",
770 command, le16_to_cpu(cmd->seqnum), cmdsize);
771 lbs_deb_hex(LBS_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize);
772
773 ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize);
774
775 if (ret) {
776 lbs_pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret);
777 /* Let the timer kick in and retry, and potentially reset
778 the whole thing if the condition persists */
779 timeo = HZ/4;
780 }
781
782 if (command == CMD_802_11_DEEP_SLEEP) {
783 if (priv->is_auto_deep_sleep_enabled) {
784 priv->wakeup_dev_required = 1;
785 priv->dnld_sent = 0;
786 }
787 priv->is_deep_sleep = 1;
788 lbs_complete_command(priv, cmdnode, 0);
789 } else {
790 /* Setup the timer after transmit command */
791 mod_timer(&priv->command_timer, jiffies + timeo);
792 }
793
794 lbs_deb_leave(LBS_DEB_HOST);
795 }
796
797 /**
798 * This function inserts command node to cmdfreeq
799 * after cleans it. Requires priv->driver_lock held.
800 */
801 static void __lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
802 struct cmd_ctrl_node *cmdnode)
803 {
804 lbs_deb_enter(LBS_DEB_HOST);
805
806 if (!cmdnode)
807 goto out;
808
809 cmdnode->callback = NULL;
810 cmdnode->callback_arg = 0;
811
812 memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE);
813
814 list_add_tail(&cmdnode->list, &priv->cmdfreeq);
815 out:
816 lbs_deb_leave(LBS_DEB_HOST);
817 }
818
819 static void lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
820 struct cmd_ctrl_node *ptempcmd)
821 {
822 unsigned long flags;
823
824 spin_lock_irqsave(&priv->driver_lock, flags);
825 __lbs_cleanup_and_insert_cmd(priv, ptempcmd);
826 spin_unlock_irqrestore(&priv->driver_lock, flags);
827 }
828
829 void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
830 int result)
831 {
832 if (cmd == priv->cur_cmd)
833 priv->cur_cmd_retcode = result;
834
835 cmd->result = result;
836 cmd->cmdwaitqwoken = 1;
837 wake_up_interruptible(&cmd->cmdwait_q);
838
839 if (!cmd->callback || cmd->callback == lbs_cmd_async_callback)
840 __lbs_cleanup_and_insert_cmd(priv, cmd);
841 priv->cur_cmd = NULL;
842 }
843
844 int lbs_set_radio(struct lbs_private *priv, u8 preamble, u8 radio_on)
845 {
846 struct cmd_ds_802_11_radio_control cmd;
847 int ret = -EINVAL;
848
849 lbs_deb_enter(LBS_DEB_CMD);
850
851 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
852 cmd.action = cpu_to_le16(CMD_ACT_SET);
853
854 /* Only v8 and below support setting the preamble */
855 if (priv->fwrelease < 0x09000000) {
856 switch (preamble) {
857 case RADIO_PREAMBLE_SHORT:
858 case RADIO_PREAMBLE_AUTO:
859 case RADIO_PREAMBLE_LONG:
860 cmd.control = cpu_to_le16(preamble);
861 break;
862 default:
863 goto out;
864 }
865 }
866
867 if (radio_on)
868 cmd.control |= cpu_to_le16(0x1);
869 else {
870 cmd.control &= cpu_to_le16(~0x1);
871 priv->txpower_cur = 0;
872 }
873
874 lbs_deb_cmd("RADIO_CONTROL: radio %s, preamble %d\n",
875 radio_on ? "ON" : "OFF", preamble);
876
877 priv->radio_on = radio_on;
878
879 ret = lbs_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd);
880
881 out:
882 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
883 return ret;
884 }
885
886 void lbs_set_mac_control(struct lbs_private *priv)
887 {
888 struct cmd_ds_mac_control cmd;
889
890 lbs_deb_enter(LBS_DEB_CMD);
891
892 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
893 cmd.action = cpu_to_le16(priv->mac_control);
894 cmd.reserved = 0;
895
896 lbs_cmd_async(priv, CMD_MAC_CONTROL, &cmd.hdr, sizeof(cmd));
897
898 lbs_deb_leave(LBS_DEB_CMD);
899 }
900
901 /**
902 * @brief This function implements command CMD_802_11D_DOMAIN_INFO
903 * @param priv pointer to struct lbs_private
904 * @param cmd pointer to cmd buffer
905 * @param cmdno cmd ID
906 * @param cmdOption cmd action
907 * @return 0
908 */
909 int lbs_cmd_802_11d_domain_info(struct lbs_private *priv,
910 struct cmd_ds_command *cmd,
911 u16 cmdoption)
912 {
913 struct cmd_ds_802_11d_domain_info *pdomaininfo =
914 &cmd->params.domaininfo;
915 struct mrvl_ie_domain_param_set *domain = &pdomaininfo->domain;
916 u8 nr_triplet = priv->domain_reg.no_triplet;
917
918 lbs_deb_enter(LBS_DEB_11D);
919
920 lbs_deb_11d("nr_triplet=%x\n", nr_triplet);
921
922 pdomaininfo->action = cpu_to_le16(cmdoption);
923 if (cmdoption == CMD_ACT_GET) {
924 cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) +
925 sizeof(struct cmd_header));
926 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd,
927 le16_to_cpu(cmd->size));
928 goto done;
929 }
930
931 domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
932 memcpy(domain->countrycode, priv->domain_reg.country_code,
933 sizeof(domain->countrycode));
934
935 domain->header.len = cpu_to_le16(nr_triplet
936 * sizeof(struct ieee80211_country_ie_triplet)
937 + sizeof(domain->countrycode));
938
939 if (nr_triplet) {
940 memcpy(domain->triplet, priv->domain_reg.triplet,
941 nr_triplet *
942 sizeof(struct ieee80211_country_ie_triplet));
943
944 cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) +
945 le16_to_cpu(domain->header.len) +
946 sizeof(struct mrvl_ie_header) +
947 sizeof(struct cmd_header));
948 } else {
949 cmd->size = cpu_to_le16(sizeof(pdomaininfo->action) +
950 sizeof(struct cmd_header));
951 }
952
953 lbs_deb_hex(LBS_DEB_11D, "802_11D_DOMAIN_INFO", (u8 *) cmd,
954 le16_to_cpu(cmd->size));
955
956 done:
957 lbs_deb_enter(LBS_DEB_11D);
958 return 0;
959 }
960
961 /**
962 * @brief This function prepare the command before send to firmware.
963 *
964 * @param priv A pointer to struct lbs_private structure
965 * @param cmd_no command number
966 * @param cmd_action command action: GET or SET
967 * @param wait_option wait option: wait response or not
968 * @param cmd_oid cmd oid: treated as sub command
969 * @param pdata_buf A pointer to informaion buffer
970 * @return 0 or -1
971 */
972 int lbs_prepare_and_send_command(struct lbs_private *priv,
973 u16 cmd_no,
974 u16 cmd_action,
975 u16 wait_option, u32 cmd_oid, void *pdata_buf)
976 {
977 int ret = 0;
978 struct cmd_ctrl_node *cmdnode;
979 struct cmd_ds_command *cmdptr;
980 unsigned long flags;
981
982 lbs_deb_enter(LBS_DEB_HOST);
983
984 if (!priv) {
985 lbs_deb_host("PREP_CMD: priv is NULL\n");
986 ret = -1;
987 goto done;
988 }
989
990 if (priv->surpriseremoved) {
991 lbs_deb_host("PREP_CMD: card removed\n");
992 ret = -1;
993 goto done;
994 }
995
996 if (!lbs_is_cmd_allowed(priv)) {
997 ret = -EBUSY;
998 goto done;
999 }
1000
1001 cmdnode = lbs_get_cmd_ctrl_node(priv);
1002
1003 if (cmdnode == NULL) {
1004 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1005
1006 /* Wake up main thread to execute next command */
1007 wake_up_interruptible(&priv->waitq);
1008 ret = -1;
1009 goto done;
1010 }
1011
1012 cmdnode->callback = NULL;
1013 cmdnode->callback_arg = (unsigned long)pdata_buf;
1014
1015 cmdptr = (struct cmd_ds_command *)cmdnode->cmdbuf;
1016
1017 lbs_deb_host("PREP_CMD: command 0x%04x\n", cmd_no);
1018
1019 /* Set sequence number, command and INT option */
1020 priv->seqnum++;
1021 cmdptr->seqnum = cpu_to_le16(priv->seqnum);
1022
1023 cmdptr->command = cpu_to_le16(cmd_no);
1024 cmdptr->result = 0;
1025
1026 switch (cmd_no) {
1027 case CMD_802_11_PS_MODE:
1028 ret = lbs_cmd_802_11_ps_mode(cmdptr, cmd_action);
1029 break;
1030
1031 case CMD_MAC_REG_ACCESS:
1032 case CMD_BBP_REG_ACCESS:
1033 case CMD_RF_REG_ACCESS:
1034 ret = lbs_cmd_reg_access(cmdptr, cmd_action, pdata_buf);
1035 break;
1036
1037 case CMD_802_11_MONITOR_MODE:
1038 ret = lbs_cmd_802_11_monitor_mode(cmdptr,
1039 cmd_action, pdata_buf);
1040 break;
1041
1042 case CMD_802_11_RSSI:
1043 ret = lbs_cmd_802_11_rssi(priv, cmdptr);
1044 break;
1045
1046 case CMD_802_11_SET_AFC:
1047 case CMD_802_11_GET_AFC:
1048
1049 cmdptr->command = cpu_to_le16(cmd_no);
1050 cmdptr->size = cpu_to_le16(sizeof(struct cmd_ds_802_11_afc) +
1051 sizeof(struct cmd_header));
1052
1053 memmove(&cmdptr->params.afc,
1054 pdata_buf, sizeof(struct cmd_ds_802_11_afc));
1055
1056 ret = 0;
1057 goto done;
1058
1059 case CMD_802_11D_DOMAIN_INFO:
1060 cmdptr->command = cpu_to_le16(cmd_no);
1061 ret = lbs_cmd_802_11d_domain_info(priv, cmdptr, cmd_action);
1062 break;
1063
1064 case CMD_802_11_TPC_CFG:
1065 cmdptr->command = cpu_to_le16(CMD_802_11_TPC_CFG);
1066 cmdptr->size =
1067 cpu_to_le16(sizeof(struct cmd_ds_802_11_tpc_cfg) +
1068 sizeof(struct cmd_header));
1069
1070 memmove(&cmdptr->params.tpccfg,
1071 pdata_buf, sizeof(struct cmd_ds_802_11_tpc_cfg));
1072
1073 ret = 0;
1074 break;
1075
1076 #ifdef CONFIG_LIBERTAS_MESH
1077
1078 case CMD_BT_ACCESS:
1079 ret = lbs_cmd_bt_access(cmdptr, cmd_action, pdata_buf);
1080 break;
1081
1082 case CMD_FWT_ACCESS:
1083 ret = lbs_cmd_fwt_access(cmdptr, cmd_action, pdata_buf);
1084 break;
1085
1086 #endif
1087
1088 case CMD_802_11_BEACON_CTRL:
1089 ret = lbs_cmd_bcn_ctrl(priv, cmdptr, cmd_action);
1090 break;
1091 case CMD_802_11_DEEP_SLEEP:
1092 cmdptr->command = cpu_to_le16(CMD_802_11_DEEP_SLEEP);
1093 cmdptr->size = cpu_to_le16(sizeof(struct cmd_header));
1094 break;
1095 default:
1096 lbs_pr_err("PREP_CMD: unknown command 0x%04x\n", cmd_no);
1097 ret = -1;
1098 break;
1099 }
1100
1101 /* return error, since the command preparation failed */
1102 if (ret != 0) {
1103 lbs_deb_host("PREP_CMD: command preparation failed\n");
1104 lbs_cleanup_and_insert_cmd(priv, cmdnode);
1105 ret = -1;
1106 goto done;
1107 }
1108
1109 cmdnode->cmdwaitqwoken = 0;
1110
1111 lbs_queue_cmd(priv, cmdnode);
1112 wake_up_interruptible(&priv->waitq);
1113
1114 if (wait_option & CMD_OPTION_WAITFORRSP) {
1115 lbs_deb_host("PREP_CMD: wait for response\n");
1116 might_sleep();
1117 wait_event_interruptible(cmdnode->cmdwait_q,
1118 cmdnode->cmdwaitqwoken);
1119 }
1120
1121 spin_lock_irqsave(&priv->driver_lock, flags);
1122 if (priv->cur_cmd_retcode) {
1123 lbs_deb_host("PREP_CMD: command failed with return code %d\n",
1124 priv->cur_cmd_retcode);
1125 priv->cur_cmd_retcode = 0;
1126 ret = -1;
1127 }
1128 spin_unlock_irqrestore(&priv->driver_lock, flags);
1129
1130 done:
1131 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1132 return ret;
1133 }
1134
1135 /**
1136 * @brief This function allocates the command buffer and link
1137 * it to command free queue.
1138 *
1139 * @param priv A pointer to struct lbs_private structure
1140 * @return 0 or -1
1141 */
1142 int lbs_allocate_cmd_buffer(struct lbs_private *priv)
1143 {
1144 int ret = 0;
1145 u32 bufsize;
1146 u32 i;
1147 struct cmd_ctrl_node *cmdarray;
1148
1149 lbs_deb_enter(LBS_DEB_HOST);
1150
1151 /* Allocate and initialize the command array */
1152 bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS;
1153 if (!(cmdarray = kzalloc(bufsize, GFP_KERNEL))) {
1154 lbs_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n");
1155 ret = -1;
1156 goto done;
1157 }
1158 priv->cmd_array = cmdarray;
1159
1160 /* Allocate and initialize each command buffer in the command array */
1161 for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1162 cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL);
1163 if (!cmdarray[i].cmdbuf) {
1164 lbs_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
1165 ret = -1;
1166 goto done;
1167 }
1168 }
1169
1170 for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1171 init_waitqueue_head(&cmdarray[i].cmdwait_q);
1172 lbs_cleanup_and_insert_cmd(priv, &cmdarray[i]);
1173 }
1174 ret = 0;
1175
1176 done:
1177 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1178 return ret;
1179 }
1180
1181 /**
1182 * @brief This function frees the command buffer.
1183 *
1184 * @param priv A pointer to struct lbs_private structure
1185 * @return 0 or -1
1186 */
1187 int lbs_free_cmd_buffer(struct lbs_private *priv)
1188 {
1189 struct cmd_ctrl_node *cmdarray;
1190 unsigned int i;
1191
1192 lbs_deb_enter(LBS_DEB_HOST);
1193
1194 /* need to check if cmd array is allocated or not */
1195 if (priv->cmd_array == NULL) {
1196 lbs_deb_host("FREE_CMD_BUF: cmd_array is NULL\n");
1197 goto done;
1198 }
1199
1200 cmdarray = priv->cmd_array;
1201
1202 /* Release shared memory buffers */
1203 for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1204 if (cmdarray[i].cmdbuf) {
1205 kfree(cmdarray[i].cmdbuf);
1206 cmdarray[i].cmdbuf = NULL;
1207 }
1208 }
1209
1210 /* Release cmd_ctrl_node */
1211 if (priv->cmd_array) {
1212 kfree(priv->cmd_array);
1213 priv->cmd_array = NULL;
1214 }
1215
1216 done:
1217 lbs_deb_leave(LBS_DEB_HOST);
1218 return 0;
1219 }
1220
1221 /**
1222 * @brief This function gets a free command node if available in
1223 * command free queue.
1224 *
1225 * @param priv A pointer to struct lbs_private structure
1226 * @return cmd_ctrl_node A pointer to cmd_ctrl_node structure or NULL
1227 */
1228 static struct cmd_ctrl_node *lbs_get_cmd_ctrl_node(struct lbs_private *priv)
1229 {
1230 struct cmd_ctrl_node *tempnode;
1231 unsigned long flags;
1232
1233 lbs_deb_enter(LBS_DEB_HOST);
1234
1235 if (!priv)
1236 return NULL;
1237
1238 spin_lock_irqsave(&priv->driver_lock, flags);
1239
1240 if (!list_empty(&priv->cmdfreeq)) {
1241 tempnode = list_first_entry(&priv->cmdfreeq,
1242 struct cmd_ctrl_node, list);
1243 list_del(&tempnode->list);
1244 } else {
1245 lbs_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
1246 tempnode = NULL;
1247 }
1248
1249 spin_unlock_irqrestore(&priv->driver_lock, flags);
1250
1251 lbs_deb_leave(LBS_DEB_HOST);
1252 return tempnode;
1253 }
1254
1255 /**
1256 * @brief This function executes next command in command
1257 * pending queue. It will put firmware back to PS mode
1258 * if applicable.
1259 *
1260 * @param priv A pointer to struct lbs_private structure
1261 * @return 0 or -1
1262 */
1263 int lbs_execute_next_command(struct lbs_private *priv)
1264 {
1265 struct cmd_ctrl_node *cmdnode = NULL;
1266 struct cmd_header *cmd;
1267 unsigned long flags;
1268 int ret = 0;
1269
1270 /* Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
1271 * only caller to us is lbs_thread() and we get even when a
1272 * data packet is received */
1273 lbs_deb_enter(LBS_DEB_THREAD);
1274
1275 spin_lock_irqsave(&priv->driver_lock, flags);
1276
1277 if (priv->cur_cmd) {
1278 lbs_pr_alert( "EXEC_NEXT_CMD: already processing command!\n");
1279 spin_unlock_irqrestore(&priv->driver_lock, flags);
1280 ret = -1;
1281 goto done;
1282 }
1283
1284 if (!list_empty(&priv->cmdpendingq)) {
1285 cmdnode = list_first_entry(&priv->cmdpendingq,
1286 struct cmd_ctrl_node, list);
1287 }
1288
1289 spin_unlock_irqrestore(&priv->driver_lock, flags);
1290
1291 if (cmdnode) {
1292 cmd = cmdnode->cmdbuf;
1293
1294 if (is_command_allowed_in_ps(le16_to_cpu(cmd->command))) {
1295 if ((priv->psstate == PS_STATE_SLEEP) ||
1296 (priv->psstate == PS_STATE_PRE_SLEEP)) {
1297 lbs_deb_host(
1298 "EXEC_NEXT_CMD: cannot send cmd 0x%04x in psstate %d\n",
1299 le16_to_cpu(cmd->command),
1300 priv->psstate);
1301 ret = -1;
1302 goto done;
1303 }
1304 lbs_deb_host("EXEC_NEXT_CMD: OK to send command "
1305 "0x%04x in psstate %d\n",
1306 le16_to_cpu(cmd->command), priv->psstate);
1307 } else if (priv->psstate != PS_STATE_FULL_POWER) {
1308 /*
1309 * 1. Non-PS command:
1310 * Queue it. set needtowakeup to TRUE if current state
1311 * is SLEEP, otherwise call lbs_ps_wakeup to send Exit_PS.
1312 * 2. PS command but not Exit_PS:
1313 * Ignore it.
1314 * 3. PS command Exit_PS:
1315 * Set needtowakeup to TRUE if current state is SLEEP,
1316 * otherwise send this command down to firmware
1317 * immediately.
1318 */
1319 if (cmd->command != cpu_to_le16(CMD_802_11_PS_MODE)) {
1320 /* Prepare to send Exit PS,
1321 * this non PS command will be sent later */
1322 if ((priv->psstate == PS_STATE_SLEEP)
1323 || (priv->psstate == PS_STATE_PRE_SLEEP)
1324 ) {
1325 /* w/ new scheme, it will not reach here.
1326 since it is blocked in main_thread. */
1327 priv->needtowakeup = 1;
1328 } else
1329 lbs_ps_wakeup(priv, 0);
1330
1331 ret = 0;
1332 goto done;
1333 } else {
1334 /*
1335 * PS command. Ignore it if it is not Exit_PS.
1336 * otherwise send it down immediately.
1337 */
1338 struct cmd_ds_802_11_ps_mode *psm = (void *)&cmd[1];
1339
1340 lbs_deb_host(
1341 "EXEC_NEXT_CMD: PS cmd, action 0x%02x\n",
1342 psm->action);
1343 if (psm->action !=
1344 cpu_to_le16(CMD_SUBCMD_EXIT_PS)) {
1345 lbs_deb_host(
1346 "EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
1347 list_del(&cmdnode->list);
1348 spin_lock_irqsave(&priv->driver_lock, flags);
1349 lbs_complete_command(priv, cmdnode, 0);
1350 spin_unlock_irqrestore(&priv->driver_lock, flags);
1351
1352 ret = 0;
1353 goto done;
1354 }
1355
1356 if ((priv->psstate == PS_STATE_SLEEP) ||
1357 (priv->psstate == PS_STATE_PRE_SLEEP)) {
1358 lbs_deb_host(
1359 "EXEC_NEXT_CMD: ignore EXIT_PS cmd in sleep\n");
1360 list_del(&cmdnode->list);
1361 spin_lock_irqsave(&priv->driver_lock, flags);
1362 lbs_complete_command(priv, cmdnode, 0);
1363 spin_unlock_irqrestore(&priv->driver_lock, flags);
1364 priv->needtowakeup = 1;
1365
1366 ret = 0;
1367 goto done;
1368 }
1369
1370 lbs_deb_host(
1371 "EXEC_NEXT_CMD: sending EXIT_PS\n");
1372 }
1373 }
1374 list_del(&cmdnode->list);
1375 lbs_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
1376 le16_to_cpu(cmd->command));
1377 lbs_submit_command(priv, cmdnode);
1378 } else {
1379 /*
1380 * check if in power save mode, if yes, put the device back
1381 * to PS mode
1382 */
1383 #ifdef TODO
1384 /*
1385 * This was the old code for libertas+wext. Someone that
1386 * understands this beast should re-code it in a sane way.
1387 *
1388 * I actually don't understand why this is related to WPA
1389 * and to connection status, shouldn't powering should be
1390 * independ of such things?
1391 */
1392 if ((priv->psmode != LBS802_11POWERMODECAM) &&
1393 (priv->psstate == PS_STATE_FULL_POWER) &&
1394 ((priv->connect_status == LBS_CONNECTED) ||
1395 lbs_mesh_connected(priv))) {
1396 if (priv->secinfo.WPAenabled ||
1397 priv->secinfo.WPA2enabled) {
1398 /* check for valid WPA group keys */
1399 if (priv->wpa_mcast_key.len ||
1400 priv->wpa_unicast_key.len) {
1401 lbs_deb_host(
1402 "EXEC_NEXT_CMD: WPA enabled and GTK_SET"
1403 " go back to PS_SLEEP");
1404 lbs_ps_sleep(priv, 0);
1405 }
1406 } else {
1407 lbs_deb_host(
1408 "EXEC_NEXT_CMD: cmdpendingq empty, "
1409 "go back to PS_SLEEP");
1410 lbs_ps_sleep(priv, 0);
1411 }
1412 }
1413 #endif
1414 }
1415
1416 ret = 0;
1417 done:
1418 lbs_deb_leave(LBS_DEB_THREAD);
1419 return ret;
1420 }
1421
1422 static void lbs_send_confirmsleep(struct lbs_private *priv)
1423 {
1424 unsigned long flags;
1425 int ret;
1426
1427 lbs_deb_enter(LBS_DEB_HOST);
1428 lbs_deb_hex(LBS_DEB_HOST, "sleep confirm", (u8 *) &confirm_sleep,
1429 sizeof(confirm_sleep));
1430
1431 ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &confirm_sleep,
1432 sizeof(confirm_sleep));
1433 if (ret) {
1434 lbs_pr_alert("confirm_sleep failed\n");
1435 goto out;
1436 }
1437
1438 spin_lock_irqsave(&priv->driver_lock, flags);
1439
1440 /* We don't get a response on the sleep-confirmation */
1441 priv->dnld_sent = DNLD_RES_RECEIVED;
1442
1443 if (priv->is_host_sleep_configured) {
1444 priv->is_host_sleep_activated = 1;
1445 wake_up_interruptible(&priv->host_sleep_q);
1446 }
1447
1448 /* If nothing to do, go back to sleep (?) */
1449 if (!kfifo_len(&priv->event_fifo) && !priv->resp_len[priv->resp_idx])
1450 priv->psstate = PS_STATE_SLEEP;
1451
1452 spin_unlock_irqrestore(&priv->driver_lock, flags);
1453
1454 out:
1455 lbs_deb_leave(LBS_DEB_HOST);
1456 }
1457
1458 void lbs_ps_sleep(struct lbs_private *priv, int wait_option)
1459 {
1460 lbs_deb_enter(LBS_DEB_HOST);
1461
1462 /*
1463 * PS is currently supported only in Infrastructure mode
1464 * Remove this check if it is to be supported in IBSS mode also
1465 */
1466
1467 lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
1468 CMD_SUBCMD_ENTER_PS, wait_option, 0, NULL);
1469
1470 lbs_deb_leave(LBS_DEB_HOST);
1471 }
1472
1473 /**
1474 * @brief This function sends Exit_PS command to firmware.
1475 *
1476 * @param priv A pointer to struct lbs_private structure
1477 * @param wait_option wait response or not
1478 * @return n/a
1479 */
1480 void lbs_ps_wakeup(struct lbs_private *priv, int wait_option)
1481 {
1482 __le32 Localpsmode;
1483
1484 lbs_deb_enter(LBS_DEB_HOST);
1485
1486 Localpsmode = cpu_to_le32(LBS802_11POWERMODECAM);
1487
1488 lbs_prepare_and_send_command(priv, CMD_802_11_PS_MODE,
1489 CMD_SUBCMD_EXIT_PS,
1490 wait_option, 0, &Localpsmode);
1491
1492 lbs_deb_leave(LBS_DEB_HOST);
1493 }
1494
1495 /**
1496 * @brief This function checks condition and prepares to
1497 * send sleep confirm command to firmware if ok.
1498 *
1499 * @param priv A pointer to struct lbs_private structure
1500 * @param psmode Power Saving mode
1501 * @return n/a
1502 */
1503 void lbs_ps_confirm_sleep(struct lbs_private *priv)
1504 {
1505 unsigned long flags =0;
1506 int allowed = 1;
1507
1508 lbs_deb_enter(LBS_DEB_HOST);
1509
1510 spin_lock_irqsave(&priv->driver_lock, flags);
1511 if (priv->dnld_sent) {
1512 allowed = 0;
1513 lbs_deb_host("dnld_sent was set\n");
1514 }
1515
1516 /* In-progress command? */
1517 if (priv->cur_cmd) {
1518 allowed = 0;
1519 lbs_deb_host("cur_cmd was set\n");
1520 }
1521
1522 /* Pending events or command responses? */
1523 if (kfifo_len(&priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
1524 allowed = 0;
1525 lbs_deb_host("pending events or command responses\n");
1526 }
1527 spin_unlock_irqrestore(&priv->driver_lock, flags);
1528
1529 if (allowed) {
1530 lbs_deb_host("sending lbs_ps_confirm_sleep\n");
1531 lbs_send_confirmsleep(priv);
1532 } else {
1533 lbs_deb_host("sleep confirm has been delayed\n");
1534 }
1535
1536 lbs_deb_leave(LBS_DEB_HOST);
1537 }
1538
1539
1540 /**
1541 * @brief Configures the transmission power control functionality.
1542 *
1543 * @param priv A pointer to struct lbs_private structure
1544 * @param enable Transmission power control enable
1545 * @param p0 Power level when link quality is good (dBm).
1546 * @param p1 Power level when link quality is fair (dBm).
1547 * @param p2 Power level when link quality is poor (dBm).
1548 * @param usesnr Use Signal to Noise Ratio in TPC
1549 *
1550 * @return 0 on success
1551 */
1552 int lbs_set_tpc_cfg(struct lbs_private *priv, int enable, int8_t p0, int8_t p1,
1553 int8_t p2, int usesnr)
1554 {
1555 struct cmd_ds_802_11_tpc_cfg cmd;
1556 int ret;
1557
1558 memset(&cmd, 0, sizeof(cmd));
1559 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1560 cmd.action = cpu_to_le16(CMD_ACT_SET);
1561 cmd.enable = !!enable;
1562 cmd.usesnr = !!usesnr;
1563 cmd.P0 = p0;
1564 cmd.P1 = p1;
1565 cmd.P2 = p2;
1566
1567 ret = lbs_cmd_with_response(priv, CMD_802_11_TPC_CFG, &cmd);
1568
1569 return ret;
1570 }
1571
1572 /**
1573 * @brief Configures the power adaptation settings.
1574 *
1575 * @param priv A pointer to struct lbs_private structure
1576 * @param enable Power adaptation enable
1577 * @param p0 Power level for 1, 2, 5.5 and 11 Mbps (dBm).
1578 * @param p1 Power level for 6, 9, 12, 18, 22, 24 and 36 Mbps (dBm).
1579 * @param p2 Power level for 48 and 54 Mbps (dBm).
1580 *
1581 * @return 0 on Success
1582 */
1583
1584 int lbs_set_power_adapt_cfg(struct lbs_private *priv, int enable, int8_t p0,
1585 int8_t p1, int8_t p2)
1586 {
1587 struct cmd_ds_802_11_pa_cfg cmd;
1588 int ret;
1589
1590 memset(&cmd, 0, sizeof(cmd));
1591 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1592 cmd.action = cpu_to_le16(CMD_ACT_SET);
1593 cmd.enable = !!enable;
1594 cmd.P0 = p0;
1595 cmd.P1 = p1;
1596 cmd.P2 = p2;
1597
1598 ret = lbs_cmd_with_response(priv, CMD_802_11_PA_CFG , &cmd);
1599
1600 return ret;
1601 }
1602
1603
1604 struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv,
1605 uint16_t command, struct cmd_header *in_cmd, int in_cmd_size,
1606 int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1607 unsigned long callback_arg)
1608 {
1609 struct cmd_ctrl_node *cmdnode;
1610
1611 lbs_deb_enter(LBS_DEB_HOST);
1612
1613 if (priv->surpriseremoved) {
1614 lbs_deb_host("PREP_CMD: card removed\n");
1615 cmdnode = ERR_PTR(-ENOENT);
1616 goto done;
1617 }
1618
1619 if (!lbs_is_cmd_allowed(priv)) {
1620 cmdnode = ERR_PTR(-EBUSY);
1621 goto done;
1622 }
1623
1624 cmdnode = lbs_get_cmd_ctrl_node(priv);
1625 if (cmdnode == NULL) {
1626 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1627
1628 /* Wake up main thread to execute next command */
1629 wake_up_interruptible(&priv->waitq);
1630 cmdnode = ERR_PTR(-ENOBUFS);
1631 goto done;
1632 }
1633
1634 cmdnode->callback = callback;
1635 cmdnode->callback_arg = callback_arg;
1636
1637 /* Copy the incoming command to the buffer */
1638 memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size);
1639
1640 /* Set sequence number, clean result, move to buffer */
1641 priv->seqnum++;
1642 cmdnode->cmdbuf->command = cpu_to_le16(command);
1643 cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size);
1644 cmdnode->cmdbuf->seqnum = cpu_to_le16(priv->seqnum);
1645 cmdnode->cmdbuf->result = 0;
1646
1647 lbs_deb_host("PREP_CMD: command 0x%04x\n", command);
1648
1649 cmdnode->cmdwaitqwoken = 0;
1650 lbs_queue_cmd(priv, cmdnode);
1651 wake_up_interruptible(&priv->waitq);
1652
1653 done:
1654 lbs_deb_leave_args(LBS_DEB_HOST, "ret %p", cmdnode);
1655 return cmdnode;
1656 }
1657
1658 void lbs_cmd_async(struct lbs_private *priv, uint16_t command,
1659 struct cmd_header *in_cmd, int in_cmd_size)
1660 {
1661 lbs_deb_enter(LBS_DEB_CMD);
1662 __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1663 lbs_cmd_async_callback, 0);
1664 lbs_deb_leave(LBS_DEB_CMD);
1665 }
1666
1667 int __lbs_cmd(struct lbs_private *priv, uint16_t command,
1668 struct cmd_header *in_cmd, int in_cmd_size,
1669 int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1670 unsigned long callback_arg)
1671 {
1672 struct cmd_ctrl_node *cmdnode;
1673 unsigned long flags;
1674 int ret = 0;
1675
1676 lbs_deb_enter(LBS_DEB_HOST);
1677
1678 cmdnode = __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1679 callback, callback_arg);
1680 if (IS_ERR(cmdnode)) {
1681 ret = PTR_ERR(cmdnode);
1682 goto done;
1683 }
1684
1685 might_sleep();
1686 wait_event_interruptible(cmdnode->cmdwait_q, cmdnode->cmdwaitqwoken);
1687
1688 spin_lock_irqsave(&priv->driver_lock, flags);
1689 ret = cmdnode->result;
1690 if (ret)
1691 lbs_pr_info("PREP_CMD: command 0x%04x failed: %d\n",
1692 command, ret);
1693
1694 __lbs_cleanup_and_insert_cmd(priv, cmdnode);
1695 spin_unlock_irqrestore(&priv->driver_lock, flags);
1696
1697 done:
1698 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1699 return ret;
1700 }
1701 EXPORT_SYMBOL_GPL(__lbs_cmd);
Linux kernel - Deliverables
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