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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * This file contains the handling of command.
4 * It prepares command and sends it to firmware when it is ready.
5 */
6
7#include <linux/hardirq.h>
8#include <linux/kfifo.h>
9#include <linux/sched.h>
10#include <linux/slab.h>
11#include <linux/if_arp.h>
12#include <linux/export.h>
13
14#include "decl.h"
15#include "cfg.h"
16#include "cmd.h"
17
18#define CAL_NF(nf) ((s32)(-(s32)(nf)))
19#define CAL_RSSI(snr, nf) ((s32)((s32)(snr) + CAL_NF(nf)))
20
21/**
22 * lbs_cmd_copyback - Simple callback that copies response back into command
23 *
24 * @priv: A pointer to &struct lbs_private structure
25 * @extra: A pointer to the original command structure for which
26 * 'resp' is a response
27 * @resp: A pointer to the command response
28 *
29 * returns: 0 on success, error on failure
30 */
31int lbs_cmd_copyback(struct lbs_private *priv, unsigned long extra,
32 struct cmd_header *resp)
33{
34 struct cmd_header *buf = (void *)extra;
35 uint16_t copy_len;
36
37 copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size));
38 memcpy(buf, resp, copy_len);
39 return 0;
40}
41EXPORT_SYMBOL_GPL(lbs_cmd_copyback);
42
43/**
44 * lbs_cmd_async_callback - Simple callback that ignores the result.
45 * Use this if you just want to send a command to the hardware, but don't
46 * care for the result.
47 *
48 * @priv: ignored
49 * @extra: ignored
50 * @resp: ignored
51 *
52 * returns: 0 for success
53 */
54static int lbs_cmd_async_callback(struct lbs_private *priv, unsigned long extra,
55 struct cmd_header *resp)
56{
57 return 0;
58}
59
60
61/**
62 * is_command_allowed_in_ps - tests if a command is allowed in Power Save mode
63 *
64 * @cmd: the command ID
65 *
66 * returns: 1 if allowed, 0 if not allowed
67 */
68static u8 is_command_allowed_in_ps(u16 cmd)
69{
70 switch (cmd) {
71 case CMD_802_11_RSSI:
72 return 1;
73 case CMD_802_11_HOST_SLEEP_CFG:
74 return 1;
75 default:
76 break;
77 }
78 return 0;
79}
80
81/**
82 * lbs_update_hw_spec - Updates the hardware details like MAC address
83 * and regulatory region
84 *
85 * @priv: A pointer to &struct lbs_private structure
86 *
87 * returns: 0 on success, error on failure
88 */
89int lbs_update_hw_spec(struct lbs_private *priv)
90{
91 struct cmd_ds_get_hw_spec cmd;
92 int ret = -1;
93 u32 i;
94
95 memset(&cmd, 0, sizeof(cmd));
96 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
97 memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN);
98 ret = lbs_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd);
99 if (ret)
100 goto out;
101
102 priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo);
103
104 /* The firmware release is in an interesting format: the patch
105 * level is in the most significant nibble ... so fix that: */
106 priv->fwrelease = le32_to_cpu(cmd.fwrelease);
107 priv->fwrelease = (priv->fwrelease << 8) |
108 (priv->fwrelease >> 24 & 0xff);
109
110 /* Some firmware capabilities:
111 * CF card firmware 5.0.16p0: cap 0x00000303
112 * USB dongle firmware 5.110.17p2: cap 0x00000303
113 */
114 netdev_info(priv->dev, "%pM, fw %u.%u.%up%u, cap 0x%08x\n",
115 cmd.permanentaddr,
116 priv->fwrelease >> 24 & 0xff,
117 priv->fwrelease >> 16 & 0xff,
118 priv->fwrelease >> 8 & 0xff,
119 priv->fwrelease & 0xff,
120 priv->fwcapinfo);
121 lbs_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n",
122 cmd.hwifversion, cmd.version);
123
124 /* Clamp region code to 8-bit since FW spec indicates that it should
125 * only ever be 8-bit, even though the field size is 16-bit. Some firmware
126 * returns non-zero high 8 bits here.
127 *
128 * Firmware version 4.0.102 used in CF8381 has region code shifted. We
129 * need to check for this problem and handle it properly.
130 */
131 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V4)
132 priv->regioncode = (le16_to_cpu(cmd.regioncode) >> 8) & 0xFF;
133 else
134 priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF;
135
136 for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) {
137 /* use the region code to search for the index */
138 if (priv->regioncode == lbs_region_code_to_index[i])
139 break;
140 }
141
142 /* if it's unidentified region code, use the default (USA) */
143 if (i >= MRVDRV_MAX_REGION_CODE) {
144 priv->regioncode = 0x10;
145 netdev_info(priv->dev,
146 "unidentified region code; using the default (USA)\n");
147 }
148
149 if (priv->current_addr[0] == 0xff)
150 memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN);
151
152 if (!priv->copied_hwaddr) {
153 memcpy(priv->dev->dev_addr, priv->current_addr, ETH_ALEN);
154 if (priv->mesh_dev)
155 memcpy(priv->mesh_dev->dev_addr,
156 priv->current_addr, ETH_ALEN);
157 priv->copied_hwaddr = 1;
158 }
159
160out:
161 return ret;
162}
163
164static int lbs_ret_host_sleep_cfg(struct lbs_private *priv, unsigned long dummy,
165 struct cmd_header *resp)
166{
167 if (priv->is_host_sleep_activated) {
168 priv->is_host_sleep_configured = 0;
169 if (priv->psstate == PS_STATE_FULL_POWER) {
170 priv->is_host_sleep_activated = 0;
171 wake_up_interruptible(&priv->host_sleep_q);
172 }
173 } else {
174 priv->is_host_sleep_configured = 1;
175 }
176
177 return 0;
178}
179
180int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria,
181 struct wol_config *p_wol_config)
182{
183 struct cmd_ds_host_sleep cmd_config;
184 int ret;
185
186 /*
187 * Certain firmware versions do not support EHS_REMOVE_WAKEUP command
188 * and the card will return a failure. Since we need to be
189 * able to reset the mask, in those cases we set a 0 mask instead.
190 */
191 if (criteria == EHS_REMOVE_WAKEUP && !priv->ehs_remove_supported)
192 criteria = 0;
193
194 cmd_config.hdr.size = cpu_to_le16(sizeof(cmd_config));
195 cmd_config.criteria = cpu_to_le32(criteria);
196 cmd_config.gpio = priv->wol_gpio;
197 cmd_config.gap = priv->wol_gap;
198
199 if (p_wol_config != NULL)
200 memcpy((uint8_t *)&cmd_config.wol_conf, (uint8_t *)p_wol_config,
201 sizeof(struct wol_config));
202 else
203 cmd_config.wol_conf.action = CMD_ACT_ACTION_NONE;
204
205 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_CFG, &cmd_config.hdr,
206 le16_to_cpu(cmd_config.hdr.size),
207 lbs_ret_host_sleep_cfg, 0);
208 if (!ret) {
209 if (p_wol_config)
210 memcpy((uint8_t *) p_wol_config,
211 (uint8_t *)&cmd_config.wol_conf,
212 sizeof(struct wol_config));
213 } else {
214 netdev_info(priv->dev, "HOST_SLEEP_CFG failed %d\n", ret);
215 }
216
217 return ret;
218}
219EXPORT_SYMBOL_GPL(lbs_host_sleep_cfg);
220
221/**
222 * lbs_set_ps_mode - Sets the Power Save mode
223 *
224 * @priv: A pointer to &struct lbs_private structure
225 * @cmd_action: The Power Save operation (PS_MODE_ACTION_ENTER_PS or
226 * PS_MODE_ACTION_EXIT_PS)
227 * @block: Whether to block on a response or not
228 *
229 * returns: 0 on success, error on failure
230 */
231int lbs_set_ps_mode(struct lbs_private *priv, u16 cmd_action, bool block)
232{
233 struct cmd_ds_802_11_ps_mode cmd;
234 int ret = 0;
235
236 memset(&cmd, 0, sizeof(cmd));
237 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
238 cmd.action = cpu_to_le16(cmd_action);
239
240 if (cmd_action == PS_MODE_ACTION_ENTER_PS) {
241 lbs_deb_cmd("PS_MODE: action ENTER_PS\n");
242 cmd.multipledtim = cpu_to_le16(1); /* Default DTIM multiple */
243 } else if (cmd_action == PS_MODE_ACTION_EXIT_PS) {
244 lbs_deb_cmd("PS_MODE: action EXIT_PS\n");
245 } else {
246 /* We don't handle CONFIRM_SLEEP here because it needs to
247 * be fastpathed to the firmware.
248 */
249 lbs_deb_cmd("PS_MODE: unknown action 0x%X\n", cmd_action);
250 ret = -EOPNOTSUPP;
251 goto out;
252 }
253
254 if (block)
255 ret = lbs_cmd_with_response(priv, CMD_802_11_PS_MODE, &cmd);
256 else
257 lbs_cmd_async(priv, CMD_802_11_PS_MODE, &cmd.hdr, sizeof (cmd));
258
259out:
260 return ret;
261}
262
263int lbs_cmd_802_11_sleep_params(struct lbs_private *priv, uint16_t cmd_action,
264 struct sleep_params *sp)
265{
266 struct cmd_ds_802_11_sleep_params cmd;
267 int ret;
268
269 if (cmd_action == CMD_ACT_GET) {
270 memset(&cmd, 0, sizeof(cmd));
271 } else {
272 cmd.error = cpu_to_le16(sp->sp_error);
273 cmd.offset = cpu_to_le16(sp->sp_offset);
274 cmd.stabletime = cpu_to_le16(sp->sp_stabletime);
275 cmd.calcontrol = sp->sp_calcontrol;
276 cmd.externalsleepclk = sp->sp_extsleepclk;
277 cmd.reserved = cpu_to_le16(sp->sp_reserved);
278 }
279 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
280 cmd.action = cpu_to_le16(cmd_action);
281
282 ret = lbs_cmd_with_response(priv, CMD_802_11_SLEEP_PARAMS, &cmd);
283
284 if (!ret) {
285 lbs_deb_cmd("error 0x%x, offset 0x%x, stabletime 0x%x, "
286 "calcontrol 0x%x extsleepclk 0x%x\n",
287 le16_to_cpu(cmd.error), le16_to_cpu(cmd.offset),
288 le16_to_cpu(cmd.stabletime), cmd.calcontrol,
289 cmd.externalsleepclk);
290
291 sp->sp_error = le16_to_cpu(cmd.error);
292 sp->sp_offset = le16_to_cpu(cmd.offset);
293 sp->sp_stabletime = le16_to_cpu(cmd.stabletime);
294 sp->sp_calcontrol = cmd.calcontrol;
295 sp->sp_extsleepclk = cmd.externalsleepclk;
296 sp->sp_reserved = le16_to_cpu(cmd.reserved);
297 }
298
299 return ret;
300}
301
302static int lbs_wait_for_ds_awake(struct lbs_private *priv)
303{
304 int ret = 0;
305
306 if (priv->is_deep_sleep) {
307 if (!wait_event_interruptible_timeout(priv->ds_awake_q,
308 !priv->is_deep_sleep, (10 * HZ))) {
309 netdev_err(priv->dev, "ds_awake_q: timer expired\n");
310 ret = -1;
311 }
312 }
313
314 return ret;
315}
316
317int lbs_set_deep_sleep(struct lbs_private *priv, int deep_sleep)
318{
319 int ret = 0;
320
321 if (deep_sleep) {
322 if (priv->is_deep_sleep != 1) {
323 lbs_deb_cmd("deep sleep: sleep\n");
324 BUG_ON(!priv->enter_deep_sleep);
325 ret = priv->enter_deep_sleep(priv);
326 if (!ret) {
327 netif_stop_queue(priv->dev);
328 netif_carrier_off(priv->dev);
329 }
330 } else {
331 netdev_err(priv->dev, "deep sleep: already enabled\n");
332 }
333 } else {
334 if (priv->is_deep_sleep) {
335 lbs_deb_cmd("deep sleep: wakeup\n");
336 BUG_ON(!priv->exit_deep_sleep);
337 ret = priv->exit_deep_sleep(priv);
338 if (!ret) {
339 ret = lbs_wait_for_ds_awake(priv);
340 if (ret)
341 netdev_err(priv->dev,
342 "deep sleep: wakeup failed\n");
343 }
344 }
345 }
346
347 return ret;
348}
349
350static int lbs_ret_host_sleep_activate(struct lbs_private *priv,
351 unsigned long dummy,
352 struct cmd_header *cmd)
353{
354 priv->is_host_sleep_activated = 1;
355 wake_up_interruptible(&priv->host_sleep_q);
356
357 return 0;
358}
359
360int lbs_set_host_sleep(struct lbs_private *priv, int host_sleep)
361{
362 struct cmd_header cmd;
363 int ret = 0;
364 uint32_t criteria = EHS_REMOVE_WAKEUP;
365
366 if (host_sleep) {
367 if (priv->is_host_sleep_activated != 1) {
368 memset(&cmd, 0, sizeof(cmd));
369 ret = lbs_host_sleep_cfg(priv, priv->wol_criteria,
370 (struct wol_config *)NULL);
371 if (ret) {
372 netdev_info(priv->dev,
373 "Host sleep configuration failed: %d\n",
374 ret);
375 return ret;
376 }
377 if (priv->psstate == PS_STATE_FULL_POWER) {
378 ret = __lbs_cmd(priv,
379 CMD_802_11_HOST_SLEEP_ACTIVATE,
380 &cmd,
381 sizeof(cmd),
382 lbs_ret_host_sleep_activate, 0);
383 if (ret)
384 netdev_info(priv->dev,
385 "HOST_SLEEP_ACTIVATE failed: %d\n",
386 ret);
387 }
388
389 if (!wait_event_interruptible_timeout(
390 priv->host_sleep_q,
391 priv->is_host_sleep_activated,
392 (10 * HZ))) {
393 netdev_err(priv->dev,
394 "host_sleep_q: timer expired\n");
395 ret = -1;
396 }
397 } else {
398 netdev_err(priv->dev, "host sleep: already enabled\n");
399 }
400 } else {
401 if (priv->is_host_sleep_activated)
402 ret = lbs_host_sleep_cfg(priv, criteria,
403 (struct wol_config *)NULL);
404 }
405
406 return ret;
407}
408
409/**
410 * lbs_set_snmp_mib - Set an SNMP MIB value
411 *
412 * @priv: A pointer to &struct lbs_private structure
413 * @oid: The OID to set in the firmware
414 * @val: Value to set the OID to
415 *
416 * returns: 0 on success, error on failure
417 */
418int lbs_set_snmp_mib(struct lbs_private *priv, u32 oid, u16 val)
419{
420 struct cmd_ds_802_11_snmp_mib cmd;
421 int ret;
422
423 memset(&cmd, 0, sizeof (cmd));
424 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
425 cmd.action = cpu_to_le16(CMD_ACT_SET);
426 cmd.oid = cpu_to_le16((u16) oid);
427
428 switch (oid) {
429 case SNMP_MIB_OID_BSS_TYPE:
430 cmd.bufsize = cpu_to_le16(sizeof(u8));
431 cmd.value[0] = val;
432 break;
433 case SNMP_MIB_OID_11D_ENABLE:
434 case SNMP_MIB_OID_FRAG_THRESHOLD:
435 case SNMP_MIB_OID_RTS_THRESHOLD:
436 case SNMP_MIB_OID_SHORT_RETRY_LIMIT:
437 case SNMP_MIB_OID_LONG_RETRY_LIMIT:
438 cmd.bufsize = cpu_to_le16(sizeof(u16));
439 *((__le16 *)(&cmd.value)) = cpu_to_le16(val);
440 break;
441 default:
442 lbs_deb_cmd("SNMP_CMD: (set) unhandled OID 0x%x\n", oid);
443 ret = -EINVAL;
444 goto out;
445 }
446
447 lbs_deb_cmd("SNMP_CMD: (set) oid 0x%x, oid size 0x%x, value 0x%x\n",
448 le16_to_cpu(cmd.oid), le16_to_cpu(cmd.bufsize), val);
449
450 ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
451
452out:
453 return ret;
454}
455
456/**
457 * lbs_get_snmp_mib - Get an SNMP MIB value
458 *
459 * @priv: A pointer to &struct lbs_private structure
460 * @oid: The OID to retrieve from the firmware
461 * @out_val: Location for the returned value
462 *
463 * returns: 0 on success, error on failure
464 */
465int lbs_get_snmp_mib(struct lbs_private *priv, u32 oid, u16 *out_val)
466{
467 struct cmd_ds_802_11_snmp_mib cmd;
468 int ret;
469
470 memset(&cmd, 0, sizeof (cmd));
471 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
472 cmd.action = cpu_to_le16(CMD_ACT_GET);
473 cmd.oid = cpu_to_le16(oid);
474
475 ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
476 if (ret)
477 goto out;
478
479 switch (le16_to_cpu(cmd.bufsize)) {
480 case sizeof(u8):
481 *out_val = cmd.value[0];
482 break;
483 case sizeof(u16):
484 *out_val = le16_to_cpu(*((__le16 *)(&cmd.value)));
485 break;
486 default:
487 lbs_deb_cmd("SNMP_CMD: (get) unhandled OID 0x%x size %d\n",
488 oid, le16_to_cpu(cmd.bufsize));
489 break;
490 }
491
492out:
493 return ret;
494}
495
496/**
497 * lbs_get_tx_power - Get the min, max, and current TX power
498 *
499 * @priv: A pointer to &struct lbs_private structure
500 * @curlevel: Current power level in dBm
501 * @minlevel: Minimum supported power level in dBm (optional)
502 * @maxlevel: Maximum supported power level in dBm (optional)
503 *
504 * returns: 0 on success, error on failure
505 */
506int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel,
507 s16 *maxlevel)
508{
509 struct cmd_ds_802_11_rf_tx_power cmd;
510 int ret;
511
512 memset(&cmd, 0, sizeof(cmd));
513 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
514 cmd.action = cpu_to_le16(CMD_ACT_GET);
515
516 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
517 if (ret == 0) {
518 *curlevel = le16_to_cpu(cmd.curlevel);
519 if (minlevel)
520 *minlevel = cmd.minlevel;
521 if (maxlevel)
522 *maxlevel = cmd.maxlevel;
523 }
524
525 return ret;
526}
527
528/**
529 * lbs_set_tx_power - Set the TX power
530 *
531 * @priv: A pointer to &struct lbs_private structure
532 * @dbm: The desired power level in dBm
533 *
534 * returns: 0 on success, error on failure
535 */
536int lbs_set_tx_power(struct lbs_private *priv, s16 dbm)
537{
538 struct cmd_ds_802_11_rf_tx_power cmd;
539 int ret;
540
541 memset(&cmd, 0, sizeof(cmd));
542 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
543 cmd.action = cpu_to_le16(CMD_ACT_SET);
544 cmd.curlevel = cpu_to_le16(dbm);
545
546 lbs_deb_cmd("SET_RF_TX_POWER: %d dBm\n", dbm);
547
548 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
549
550 return ret;
551}
552
553/**
554 * lbs_set_monitor_mode - Enable or disable monitor mode
555 * (only implemented on OLPC usb8388 FW)
556 *
557 * @priv: A pointer to &struct lbs_private structure
558 * @enable: 1 to enable monitor mode, 0 to disable
559 *
560 * returns: 0 on success, error on failure
561 */
562int lbs_set_monitor_mode(struct lbs_private *priv, int enable)
563{
564 struct cmd_ds_802_11_monitor_mode cmd;
565 int ret;
566
567 memset(&cmd, 0, sizeof(cmd));
568 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
569 cmd.action = cpu_to_le16(CMD_ACT_SET);
570 if (enable)
571 cmd.mode = cpu_to_le16(0x1);
572
573 lbs_deb_cmd("SET_MONITOR_MODE: %d\n", enable);
574
575 ret = lbs_cmd_with_response(priv, CMD_802_11_MONITOR_MODE, &cmd);
576 if (ret == 0) {
577 priv->dev->type = enable ? ARPHRD_IEEE80211_RADIOTAP :
578 ARPHRD_ETHER;
579 }
580
581 return ret;
582}
583
584/**
585 * lbs_get_channel - Get the radio channel
586 *
587 * @priv: A pointer to &struct lbs_private structure
588 *
589 * returns: The channel on success, error on failure
590 */
591static int lbs_get_channel(struct lbs_private *priv)
592{
593 struct cmd_ds_802_11_rf_channel cmd;
594 int ret = 0;
595
596 memset(&cmd, 0, sizeof(cmd));
597 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
598 cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_GET);
599
600 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
601 if (ret)
602 goto out;
603
604 ret = le16_to_cpu(cmd.channel);
605 lbs_deb_cmd("current radio channel is %d\n", ret);
606
607out:
608 return ret;
609}
610
611int lbs_update_channel(struct lbs_private *priv)
612{
613 int ret;
614
615 /* the channel in f/w could be out of sync; get the current channel */
616 ret = lbs_get_channel(priv);
617 if (ret > 0) {
618 priv->channel = ret;
619 ret = 0;
620 }
621
622 return ret;
623}
624
625/**
626 * lbs_set_channel - Set the radio channel
627 *
628 * @priv: A pointer to &struct lbs_private structure
629 * @channel: The desired channel, or 0 to clear a locked channel
630 *
631 * returns: 0 on success, error on failure
632 */
633int lbs_set_channel(struct lbs_private *priv, u8 channel)
634{
635 struct cmd_ds_802_11_rf_channel cmd;
636#ifdef DEBUG
637 u8 old_channel = priv->channel;
638#endif
639 int ret = 0;
640
641 memset(&cmd, 0, sizeof(cmd));
642 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
643 cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET);
644 cmd.channel = cpu_to_le16(channel);
645
646 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
647 if (ret)
648 goto out;
649
650 priv->channel = (uint8_t) le16_to_cpu(cmd.channel);
651 lbs_deb_cmd("channel switch from %d to %d\n", old_channel,
652 priv->channel);
653
654out:
655 return ret;
656}
657
658/**
659 * lbs_get_rssi - Get current RSSI and noise floor
660 *
661 * @priv: A pointer to &struct lbs_private structure
662 * @rssi: On successful return, signal level in mBm
663 * @nf: On successful return, Noise floor
664 *
665 * returns: The channel on success, error on failure
666 */
667int lbs_get_rssi(struct lbs_private *priv, s8 *rssi, s8 *nf)
668{
669 struct cmd_ds_802_11_rssi cmd;
670 int ret = 0;
671
672 BUG_ON(rssi == NULL);
673 BUG_ON(nf == NULL);
674
675 memset(&cmd, 0, sizeof(cmd));
676 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
677 /* Average SNR over last 8 beacons */
678 cmd.n_or_snr = cpu_to_le16(8);
679
680 ret = lbs_cmd_with_response(priv, CMD_802_11_RSSI, &cmd);
681 if (ret == 0) {
682 *nf = CAL_NF(le16_to_cpu(cmd.nf));
683 *rssi = CAL_RSSI(le16_to_cpu(cmd.n_or_snr), le16_to_cpu(cmd.nf));
684 }
685
686 return ret;
687}
688
689/**
690 * lbs_set_11d_domain_info - Send regulatory and 802.11d domain information
691 * to the firmware
692 *
693 * @priv: pointer to &struct lbs_private
694 *
695 * returns: 0 on success, error code on failure
696*/
697int lbs_set_11d_domain_info(struct lbs_private *priv)
698{
699 struct wiphy *wiphy = priv->wdev->wiphy;
700 struct ieee80211_supported_band **bands = wiphy->bands;
701 struct cmd_ds_802_11d_domain_info cmd;
702 struct mrvl_ie_domain_param_set *domain = &cmd.domain;
703 struct ieee80211_country_ie_triplet *t;
704 enum nl80211_band band;
705 struct ieee80211_channel *ch;
706 u8 num_triplet = 0;
707 u8 num_parsed_chan = 0;
708 u8 first_channel = 0, next_chan = 0, max_pwr = 0;
709 u8 i, flag = 0;
710 size_t triplet_size;
711 int ret = 0;
712
713 if (!priv->country_code[0])
714 goto out;
715
716 memset(&cmd, 0, sizeof(cmd));
717 cmd.action = cpu_to_le16(CMD_ACT_SET);
718
719 lbs_deb_11d("Setting country code '%c%c'\n",
720 priv->country_code[0], priv->country_code[1]);
721
722 domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
723
724 /* Set country code */
725 domain->country_code[0] = priv->country_code[0];
726 domain->country_code[1] = priv->country_code[1];
727 domain->country_code[2] = ' ';
728
729 /* Now set up the channel triplets; firmware is somewhat picky here
730 * and doesn't validate channel numbers and spans; hence it would
731 * interpret a triplet of (36, 4, 20) as channels 36, 37, 38, 39. Since
732 * the last 3 aren't valid channels, the driver is responsible for
733 * splitting that up into 4 triplet pairs of (36, 1, 20) + (40, 1, 20)
734 * etc.
735 */
736 for (band = 0;
737 (band < NUM_NL80211_BANDS) && (num_triplet < MAX_11D_TRIPLETS);
738 band++) {
739
740 if (!bands[band])
741 continue;
742
743 for (i = 0;
744 (i < bands[band]->n_channels) && (num_triplet < MAX_11D_TRIPLETS);
745 i++) {
746 ch = &bands[band]->channels[i];
747 if (ch->flags & IEEE80211_CHAN_DISABLED)
748 continue;
749
750 if (!flag) {
751 flag = 1;
752 next_chan = first_channel = (u32) ch->hw_value;
753 max_pwr = ch->max_power;
754 num_parsed_chan = 1;
755 continue;
756 }
757
758 if ((ch->hw_value == next_chan + 1) &&
759 (ch->max_power == max_pwr)) {
760 /* Consolidate adjacent channels */
761 next_chan++;
762 num_parsed_chan++;
763 } else {
764 /* Add this triplet */
765 lbs_deb_11d("11D triplet (%d, %d, %d)\n",
766 first_channel, num_parsed_chan,
767 max_pwr);
768 t = &domain->triplet[num_triplet];
769 t->chans.first_channel = first_channel;
770 t->chans.num_channels = num_parsed_chan;
771 t->chans.max_power = max_pwr;
772 num_triplet++;
773 flag = 0;
774 }
775 }
776
777 if (flag) {
778 /* Add last triplet */
779 lbs_deb_11d("11D triplet (%d, %d, %d)\n", first_channel,
780 num_parsed_chan, max_pwr);
781 t = &domain->triplet[num_triplet];
782 t->chans.first_channel = first_channel;
783 t->chans.num_channels = num_parsed_chan;
784 t->chans.max_power = max_pwr;
785 num_triplet++;
786 }
787 }
788
789 lbs_deb_11d("# triplets %d\n", num_triplet);
790
791 /* Set command header sizes */
792 triplet_size = num_triplet * sizeof(struct ieee80211_country_ie_triplet);
793 domain->header.len = cpu_to_le16(sizeof(domain->country_code) +
794 triplet_size);
795
796 lbs_deb_hex(LBS_DEB_11D, "802.11D domain param set",
797 (u8 *) &cmd.domain.country_code,
798 le16_to_cpu(domain->header.len));
799
800 cmd.hdr.size = cpu_to_le16(sizeof(cmd.hdr) +
801 sizeof(cmd.action) +
802 sizeof(cmd.domain.header) +
803 sizeof(cmd.domain.country_code) +
804 triplet_size);
805
806 ret = lbs_cmd_with_response(priv, CMD_802_11D_DOMAIN_INFO, &cmd);
807
808out:
809 return ret;
810}
811
812/**
813 * lbs_get_reg - Read a MAC, Baseband, or RF register
814 *
815 * @priv: pointer to &struct lbs_private
816 * @reg: register command, one of CMD_MAC_REG_ACCESS,
817 * CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS
818 * @offset: byte offset of the register to get
819 * @value: on success, the value of the register at 'offset'
820 *
821 * returns: 0 on success, error code on failure
822*/
823int lbs_get_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 *value)
824{
825 struct cmd_ds_reg_access cmd;
826 int ret = 0;
827
828 BUG_ON(value == NULL);
829
830 memset(&cmd, 0, sizeof(cmd));
831 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
832 cmd.action = cpu_to_le16(CMD_ACT_GET);
833 cmd.offset = cpu_to_le16(offset);
834
835 if (reg != CMD_MAC_REG_ACCESS &&
836 reg != CMD_BBP_REG_ACCESS &&
837 reg != CMD_RF_REG_ACCESS) {
838 ret = -EINVAL;
839 goto out;
840 }
841
842 ret = lbs_cmd_with_response(priv, reg, &cmd);
843 if (!ret) {
844 if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS)
845 *value = cmd.value.bbp_rf;
846 else if (reg == CMD_MAC_REG_ACCESS)
847 *value = le32_to_cpu(cmd.value.mac);
848 }
849
850out:
851 return ret;
852}
853
854/**
855 * lbs_set_reg - Write a MAC, Baseband, or RF register
856 *
857 * @priv: pointer to &struct lbs_private
858 * @reg: register command, one of CMD_MAC_REG_ACCESS,
859 * CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS
860 * @offset: byte offset of the register to set
861 * @value: the value to write to the register at 'offset'
862 *
863 * returns: 0 on success, error code on failure
864*/
865int lbs_set_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 value)
866{
867 struct cmd_ds_reg_access cmd;
868 int ret = 0;
869
870 memset(&cmd, 0, sizeof(cmd));
871 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
872 cmd.action = cpu_to_le16(CMD_ACT_SET);
873 cmd.offset = cpu_to_le16(offset);
874
875 if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS)
876 cmd.value.bbp_rf = (u8) (value & 0xFF);
877 else if (reg == CMD_MAC_REG_ACCESS)
878 cmd.value.mac = cpu_to_le32(value);
879 else {
880 ret = -EINVAL;
881 goto out;
882 }
883
884 ret = lbs_cmd_with_response(priv, reg, &cmd);
885
886out:
887 return ret;
888}
889
890static void lbs_queue_cmd(struct lbs_private *priv,
891 struct cmd_ctrl_node *cmdnode)
892{
893 unsigned long flags;
894 int addtail = 1;
895
896 if (!cmdnode) {
897 lbs_deb_host("QUEUE_CMD: cmdnode is NULL\n");
898 return;
899 }
900 if (!cmdnode->cmdbuf->size) {
901 lbs_deb_host("DNLD_CMD: cmd size is zero\n");
902 return;
903 }
904 cmdnode->result = 0;
905
906 /* Exit_PS command needs to be queued in the header always. */
907 if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_PS_MODE) {
908 struct cmd_ds_802_11_ps_mode *psm = (void *)cmdnode->cmdbuf;
909
910 if (psm->action == cpu_to_le16(PS_MODE_ACTION_EXIT_PS)) {
911 if (priv->psstate != PS_STATE_FULL_POWER)
912 addtail = 0;
913 }
914 }
915
916 if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_WAKEUP_CONFIRM)
917 addtail = 0;
918
919 spin_lock_irqsave(&priv->driver_lock, flags);
920
921 if (addtail)
922 list_add_tail(&cmdnode->list, &priv->cmdpendingq);
923 else
924 list_add(&cmdnode->list, &priv->cmdpendingq);
925
926 spin_unlock_irqrestore(&priv->driver_lock, flags);
927
928 lbs_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n",
929 le16_to_cpu(cmdnode->cmdbuf->command));
930}
931
932static void lbs_submit_command(struct lbs_private *priv,
933 struct cmd_ctrl_node *cmdnode)
934{
935 unsigned long flags;
936 struct cmd_header *cmd;
937 uint16_t cmdsize;
938 uint16_t command;
939 int timeo = 3 * HZ;
940 int ret;
941
942 cmd = cmdnode->cmdbuf;
943
944 spin_lock_irqsave(&priv->driver_lock, flags);
945 priv->seqnum++;
946 cmd->seqnum = cpu_to_le16(priv->seqnum);
947 priv->cur_cmd = cmdnode;
948 spin_unlock_irqrestore(&priv->driver_lock, flags);
949
950 cmdsize = le16_to_cpu(cmd->size);
951 command = le16_to_cpu(cmd->command);
952
953 /* These commands take longer */
954 if (command == CMD_802_11_SCAN || command == CMD_802_11_ASSOCIATE)
955 timeo = 5 * HZ;
956
957 lbs_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n",
958 command, le16_to_cpu(cmd->seqnum), cmdsize);
959 lbs_deb_hex(LBS_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize);
960
961 ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize);
962
963 if (ret) {
964 netdev_info(priv->dev, "DNLD_CMD: hw_host_to_card failed: %d\n",
965 ret);
966 /* Reset dnld state machine, report failure */
967 priv->dnld_sent = DNLD_RES_RECEIVED;
968 lbs_complete_command(priv, cmdnode, ret);
969 }
970
971 if (command == CMD_802_11_DEEP_SLEEP) {
972 if (priv->is_auto_deep_sleep_enabled) {
973 priv->wakeup_dev_required = 1;
974 priv->dnld_sent = 0;
975 }
976 priv->is_deep_sleep = 1;
977 lbs_complete_command(priv, cmdnode, 0);
978 } else {
979 /* Setup the timer after transmit command */
980 mod_timer(&priv->command_timer, jiffies + timeo);
981 }
982}
983
984/*
985 * This function inserts command node to cmdfreeq
986 * after cleans it. Requires priv->driver_lock held.
987 */
988static void __lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
989 struct cmd_ctrl_node *cmdnode)
990{
991 if (!cmdnode)
992 return;
993
994 cmdnode->callback = NULL;
995 cmdnode->callback_arg = 0;
996
997 memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE);
998
999 list_add_tail(&cmdnode->list, &priv->cmdfreeq);
1000}
1001
1002static void lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
1003 struct cmd_ctrl_node *ptempcmd)
1004{
1005 unsigned long flags;
1006
1007 spin_lock_irqsave(&priv->driver_lock, flags);
1008 __lbs_cleanup_and_insert_cmd(priv, ptempcmd);
1009 spin_unlock_irqrestore(&priv->driver_lock, flags);
1010}
1011
1012void __lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
1013 int result)
1014{
1015 /*
1016 * Normally, commands are removed from cmdpendingq before being
1017 * submitted. However, we can arrive here on alternative codepaths
1018 * where the command is still pending. Make sure the command really
1019 * isn't part of a list at this point.
1020 */
1021 list_del_init(&cmd->list);
1022
1023 cmd->result = result;
1024 cmd->cmdwaitqwoken = 1;
1025 wake_up(&cmd->cmdwait_q);
1026
1027 if (!cmd->callback || cmd->callback == lbs_cmd_async_callback)
1028 __lbs_cleanup_and_insert_cmd(priv, cmd);
1029 priv->cur_cmd = NULL;
1030 wake_up(&priv->waitq);
1031}
1032
1033void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
1034 int result)
1035{
1036 unsigned long flags;
1037 spin_lock_irqsave(&priv->driver_lock, flags);
1038 __lbs_complete_command(priv, cmd, result);
1039 spin_unlock_irqrestore(&priv->driver_lock, flags);
1040}
1041
1042int lbs_set_radio(struct lbs_private *priv, u8 preamble, u8 radio_on)
1043{
1044 struct cmd_ds_802_11_radio_control cmd;
1045 int ret = -EINVAL;
1046
1047 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1048 cmd.action = cpu_to_le16(CMD_ACT_SET);
1049 cmd.control = 0;
1050
1051 /* Only v8 and below support setting the preamble */
1052 if (priv->fwrelease < 0x09000000) {
1053 switch (preamble) {
1054 case RADIO_PREAMBLE_SHORT:
1055 case RADIO_PREAMBLE_AUTO:
1056 case RADIO_PREAMBLE_LONG:
1057 cmd.control = cpu_to_le16(preamble);
1058 break;
1059 default:
1060 goto out;
1061 }
1062 }
1063
1064 if (radio_on)
1065 cmd.control |= cpu_to_le16(0x1);
1066 else {
1067 cmd.control &= cpu_to_le16(~0x1);
1068 priv->txpower_cur = 0;
1069 }
1070
1071 lbs_deb_cmd("RADIO_CONTROL: radio %s, preamble %d\n",
1072 radio_on ? "ON" : "OFF", preamble);
1073
1074 priv->radio_on = radio_on;
1075
1076 ret = lbs_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd);
1077
1078out:
1079 return ret;
1080}
1081
1082void lbs_set_mac_control(struct lbs_private *priv)
1083{
1084 struct cmd_ds_mac_control cmd;
1085
1086 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1087 cmd.action = cpu_to_le16(priv->mac_control);
1088 cmd.reserved = 0;
1089
1090 lbs_cmd_async(priv, CMD_MAC_CONTROL, &cmd.hdr, sizeof(cmd));
1091}
1092
1093int lbs_set_mac_control_sync(struct lbs_private *priv)
1094{
1095 struct cmd_ds_mac_control cmd;
1096 int ret = 0;
1097
1098 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1099 cmd.action = cpu_to_le16(priv->mac_control);
1100 cmd.reserved = 0;
1101 ret = lbs_cmd_with_response(priv, CMD_MAC_CONTROL, &cmd);
1102
1103 return ret;
1104}
1105
1106/**
1107 * lbs_allocate_cmd_buffer - allocates the command buffer and links
1108 * it to command free queue
1109 *
1110 * @priv: A pointer to &struct lbs_private structure
1111 *
1112 * returns: 0 for success or -1 on error
1113 */
1114int lbs_allocate_cmd_buffer(struct lbs_private *priv)
1115{
1116 int ret = 0;
1117 u32 bufsize;
1118 u32 i;
1119 struct cmd_ctrl_node *cmdarray;
1120
1121 /* Allocate and initialize the command array */
1122 bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS;
1123 if (!(cmdarray = kzalloc(bufsize, GFP_KERNEL))) {
1124 lbs_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n");
1125 ret = -1;
1126 goto done;
1127 }
1128 priv->cmd_array = cmdarray;
1129
1130 /* Allocate and initialize each command buffer in the command array */
1131 for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1132 cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL);
1133 if (!cmdarray[i].cmdbuf) {
1134 lbs_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
1135 ret = -1;
1136 goto done;
1137 }
1138 }
1139
1140 for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1141 init_waitqueue_head(&cmdarray[i].cmdwait_q);
1142 lbs_cleanup_and_insert_cmd(priv, &cmdarray[i]);
1143 }
1144 ret = 0;
1145
1146done:
1147 return ret;
1148}
1149
1150/**
1151 * lbs_free_cmd_buffer - free the command buffer
1152 *
1153 * @priv: A pointer to &struct lbs_private structure
1154 *
1155 * returns: 0 for success
1156 */
1157int lbs_free_cmd_buffer(struct lbs_private *priv)
1158{
1159 struct cmd_ctrl_node *cmdarray;
1160 unsigned int i;
1161
1162 /* need to check if cmd array is allocated or not */
1163 if (priv->cmd_array == NULL) {
1164 lbs_deb_host("FREE_CMD_BUF: cmd_array is NULL\n");
1165 goto done;
1166 }
1167
1168 cmdarray = priv->cmd_array;
1169
1170 /* Release shared memory buffers */
1171 for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1172 if (cmdarray[i].cmdbuf) {
1173 kfree(cmdarray[i].cmdbuf);
1174 cmdarray[i].cmdbuf = NULL;
1175 }
1176 }
1177
1178 /* Release cmd_ctrl_node */
1179 if (priv->cmd_array) {
1180 kfree(priv->cmd_array);
1181 priv->cmd_array = NULL;
1182 }
1183
1184done:
1185 return 0;
1186}
1187
1188/**
1189 * lbs_get_free_cmd_node - gets a free command node if available in
1190 * command free queue
1191 *
1192 * @priv: A pointer to &struct lbs_private structure
1193 *
1194 * returns: A pointer to &cmd_ctrl_node structure on success
1195 * or %NULL on error
1196 */
1197static struct cmd_ctrl_node *lbs_get_free_cmd_node(struct lbs_private *priv)
1198{
1199 struct cmd_ctrl_node *tempnode;
1200 unsigned long flags;
1201
1202 if (!priv)
1203 return NULL;
1204
1205 spin_lock_irqsave(&priv->driver_lock, flags);
1206
1207 if (!list_empty(&priv->cmdfreeq)) {
1208 tempnode = list_first_entry(&priv->cmdfreeq,
1209 struct cmd_ctrl_node, list);
1210 list_del_init(&tempnode->list);
1211 } else {
1212 lbs_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
1213 tempnode = NULL;
1214 }
1215
1216 spin_unlock_irqrestore(&priv->driver_lock, flags);
1217
1218 return tempnode;
1219}
1220
1221/**
1222 * lbs_execute_next_command - execute next command in command
1223 * pending queue. Will put firmware back to PS mode if applicable.
1224 *
1225 * @priv: A pointer to &struct lbs_private structure
1226 *
1227 * returns: 0 on success or -1 on error
1228 */
1229int lbs_execute_next_command(struct lbs_private *priv)
1230{
1231 struct cmd_ctrl_node *cmdnode = NULL;
1232 struct cmd_header *cmd;
1233 unsigned long flags;
1234 int ret = 0;
1235
1236 /* Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
1237 * only caller to us is lbs_thread() and we get even when a
1238 * data packet is received */
1239 spin_lock_irqsave(&priv->driver_lock, flags);
1240
1241 if (priv->cur_cmd) {
1242 netdev_alert(priv->dev,
1243 "EXEC_NEXT_CMD: already processing command!\n");
1244 spin_unlock_irqrestore(&priv->driver_lock, flags);
1245 ret = -1;
1246 goto done;
1247 }
1248
1249 if (!list_empty(&priv->cmdpendingq)) {
1250 cmdnode = list_first_entry(&priv->cmdpendingq,
1251 struct cmd_ctrl_node, list);
1252 }
1253
1254 spin_unlock_irqrestore(&priv->driver_lock, flags);
1255
1256 if (cmdnode) {
1257 cmd = cmdnode->cmdbuf;
1258
1259 if (is_command_allowed_in_ps(le16_to_cpu(cmd->command))) {
1260 if ((priv->psstate == PS_STATE_SLEEP) ||
1261 (priv->psstate == PS_STATE_PRE_SLEEP)) {
1262 lbs_deb_host(
1263 "EXEC_NEXT_CMD: cannot send cmd 0x%04x in psstate %d\n",
1264 le16_to_cpu(cmd->command),
1265 priv->psstate);
1266 ret = -1;
1267 goto done;
1268 }
1269 lbs_deb_host("EXEC_NEXT_CMD: OK to send command "
1270 "0x%04x in psstate %d\n",
1271 le16_to_cpu(cmd->command), priv->psstate);
1272 } else if (priv->psstate != PS_STATE_FULL_POWER) {
1273 /*
1274 * 1. Non-PS command:
1275 * Queue it. set needtowakeup to TRUE if current state
1276 * is SLEEP, otherwise call send EXIT_PS.
1277 * 2. PS command but not EXIT_PS:
1278 * Ignore it.
1279 * 3. PS command EXIT_PS:
1280 * Set needtowakeup to TRUE if current state is SLEEP,
1281 * otherwise send this command down to firmware
1282 * immediately.
1283 */
1284 if (cmd->command != cpu_to_le16(CMD_802_11_PS_MODE)) {
1285 /* Prepare to send Exit PS,
1286 * this non PS command will be sent later */
1287 if ((priv->psstate == PS_STATE_SLEEP)
1288 || (priv->psstate == PS_STATE_PRE_SLEEP)
1289 ) {
1290 /* w/ new scheme, it will not reach here.
1291 since it is blocked in main_thread. */
1292 priv->needtowakeup = 1;
1293 } else {
1294 lbs_set_ps_mode(priv,
1295 PS_MODE_ACTION_EXIT_PS,
1296 false);
1297 }
1298
1299 ret = 0;
1300 goto done;
1301 } else {
1302 /*
1303 * PS command. Ignore it if it is not Exit_PS.
1304 * otherwise send it down immediately.
1305 */
1306 struct cmd_ds_802_11_ps_mode *psm = (void *)cmd;
1307
1308 lbs_deb_host(
1309 "EXEC_NEXT_CMD: PS cmd, action 0x%02x\n",
1310 psm->action);
1311 if (psm->action !=
1312 cpu_to_le16(PS_MODE_ACTION_EXIT_PS)) {
1313 lbs_deb_host(
1314 "EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
1315 lbs_complete_command(priv, cmdnode, 0);
1316
1317 ret = 0;
1318 goto done;
1319 }
1320
1321 if ((priv->psstate == PS_STATE_SLEEP) ||
1322 (priv->psstate == PS_STATE_PRE_SLEEP)) {
1323 lbs_deb_host(
1324 "EXEC_NEXT_CMD: ignore EXIT_PS cmd in sleep\n");
1325 lbs_complete_command(priv, cmdnode, 0);
1326 priv->needtowakeup = 1;
1327
1328 ret = 0;
1329 goto done;
1330 }
1331
1332 lbs_deb_host(
1333 "EXEC_NEXT_CMD: sending EXIT_PS\n");
1334 }
1335 }
1336 spin_lock_irqsave(&priv->driver_lock, flags);
1337 list_del_init(&cmdnode->list);
1338 spin_unlock_irqrestore(&priv->driver_lock, flags);
1339 lbs_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
1340 le16_to_cpu(cmd->command));
1341 lbs_submit_command(priv, cmdnode);
1342 } else {
1343 /*
1344 * check if in power save mode, if yes, put the device back
1345 * to PS mode
1346 */
1347 if ((priv->psmode != LBS802_11POWERMODECAM) &&
1348 (priv->psstate == PS_STATE_FULL_POWER) &&
1349 (priv->connect_status == LBS_CONNECTED)) {
1350 lbs_deb_host(
1351 "EXEC_NEXT_CMD: cmdpendingq empty, go back to PS_SLEEP");
1352 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS,
1353 false);
1354 }
1355 }
1356
1357 ret = 0;
1358done:
1359 return ret;
1360}
1361
1362static void lbs_send_confirmsleep(struct lbs_private *priv)
1363{
1364 unsigned long flags;
1365 int ret;
1366
1367 lbs_deb_hex(LBS_DEB_HOST, "sleep confirm", (u8 *) &confirm_sleep,
1368 sizeof(confirm_sleep));
1369
1370 ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &confirm_sleep,
1371 sizeof(confirm_sleep));
1372 if (ret) {
1373 netdev_alert(priv->dev, "confirm_sleep failed\n");
1374 return;
1375 }
1376
1377 spin_lock_irqsave(&priv->driver_lock, flags);
1378
1379 /* We don't get a response on the sleep-confirmation */
1380 priv->dnld_sent = DNLD_RES_RECEIVED;
1381
1382 if (priv->is_host_sleep_configured) {
1383 priv->is_host_sleep_activated = 1;
1384 wake_up_interruptible(&priv->host_sleep_q);
1385 }
1386
1387 /* If nothing to do, go back to sleep (?) */
1388 if (!kfifo_len(&priv->event_fifo) && !priv->resp_len[priv->resp_idx])
1389 priv->psstate = PS_STATE_SLEEP;
1390
1391 spin_unlock_irqrestore(&priv->driver_lock, flags);
1392}
1393
1394/**
1395 * lbs_ps_confirm_sleep - checks condition and prepares to
1396 * send sleep confirm command to firmware if ok
1397 *
1398 * @priv: A pointer to &struct lbs_private structure
1399 *
1400 * returns: n/a
1401 */
1402void lbs_ps_confirm_sleep(struct lbs_private *priv)
1403{
1404 unsigned long flags =0;
1405 int allowed = 1;
1406
1407 spin_lock_irqsave(&priv->driver_lock, flags);
1408 if (priv->dnld_sent) {
1409 allowed = 0;
1410 lbs_deb_host("dnld_sent was set\n");
1411 }
1412
1413 /* In-progress command? */
1414 if (priv->cur_cmd) {
1415 allowed = 0;
1416 lbs_deb_host("cur_cmd was set\n");
1417 }
1418
1419 /* Pending events or command responses? */
1420 if (kfifo_len(&priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
1421 allowed = 0;
1422 lbs_deb_host("pending events or command responses\n");
1423 }
1424 spin_unlock_irqrestore(&priv->driver_lock, flags);
1425
1426 if (allowed) {
1427 lbs_deb_host("sending lbs_ps_confirm_sleep\n");
1428 lbs_send_confirmsleep(priv);
1429 } else {
1430 lbs_deb_host("sleep confirm has been delayed\n");
1431 }
1432}
1433
1434
1435/**
1436 * lbs_set_tpc_cfg - Configures the transmission power control functionality
1437 *
1438 * @priv: A pointer to &struct lbs_private structure
1439 * @enable: Transmission power control enable
1440 * @p0: Power level when link quality is good (dBm).
1441 * @p1: Power level when link quality is fair (dBm).
1442 * @p2: Power level when link quality is poor (dBm).
1443 * @usesnr: Use Signal to Noise Ratio in TPC
1444 *
1445 * returns: 0 on success
1446 */
1447int lbs_set_tpc_cfg(struct lbs_private *priv, int enable, int8_t p0, int8_t p1,
1448 int8_t p2, int usesnr)
1449{
1450 struct cmd_ds_802_11_tpc_cfg cmd;
1451 int ret;
1452
1453 memset(&cmd, 0, sizeof(cmd));
1454 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1455 cmd.action = cpu_to_le16(CMD_ACT_SET);
1456 cmd.enable = !!enable;
1457 cmd.usesnr = !!usesnr;
1458 cmd.P0 = p0;
1459 cmd.P1 = p1;
1460 cmd.P2 = p2;
1461
1462 ret = lbs_cmd_with_response(priv, CMD_802_11_TPC_CFG, &cmd);
1463
1464 return ret;
1465}
1466
1467/**
1468 * lbs_set_power_adapt_cfg - Configures the power adaptation settings
1469 *
1470 * @priv: A pointer to &struct lbs_private structure
1471 * @enable: Power adaptation enable
1472 * @p0: Power level for 1, 2, 5.5 and 11 Mbps (dBm).
1473 * @p1: Power level for 6, 9, 12, 18, 22, 24 and 36 Mbps (dBm).
1474 * @p2: Power level for 48 and 54 Mbps (dBm).
1475 *
1476 * returns: 0 on Success
1477 */
1478
1479int lbs_set_power_adapt_cfg(struct lbs_private *priv, int enable, int8_t p0,
1480 int8_t p1, int8_t p2)
1481{
1482 struct cmd_ds_802_11_pa_cfg cmd;
1483 int ret;
1484
1485 memset(&cmd, 0, sizeof(cmd));
1486 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1487 cmd.action = cpu_to_le16(CMD_ACT_SET);
1488 cmd.enable = !!enable;
1489 cmd.P0 = p0;
1490 cmd.P1 = p1;
1491 cmd.P2 = p2;
1492
1493 ret = lbs_cmd_with_response(priv, CMD_802_11_PA_CFG , &cmd);
1494
1495 return ret;
1496}
1497
1498
1499struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv,
1500 uint16_t command, struct cmd_header *in_cmd, int in_cmd_size,
1501 int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1502 unsigned long callback_arg)
1503{
1504 struct cmd_ctrl_node *cmdnode;
1505
1506 if (priv->surpriseremoved) {
1507 lbs_deb_host("PREP_CMD: card removed\n");
1508 cmdnode = ERR_PTR(-ENOENT);
1509 goto done;
1510 }
1511
1512 /* No commands are allowed in Deep Sleep until we toggle the GPIO
1513 * to wake up the card and it has signaled that it's ready.
1514 */
1515 if (!priv->is_auto_deep_sleep_enabled) {
1516 if (priv->is_deep_sleep) {
1517 lbs_deb_cmd("command not allowed in deep sleep\n");
1518 cmdnode = ERR_PTR(-EBUSY);
1519 goto done;
1520 }
1521 }
1522
1523 cmdnode = lbs_get_free_cmd_node(priv);
1524 if (cmdnode == NULL) {
1525 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1526
1527 /* Wake up main thread to execute next command */
1528 wake_up(&priv->waitq);
1529 cmdnode = ERR_PTR(-ENOBUFS);
1530 goto done;
1531 }
1532
1533 cmdnode->callback = callback;
1534 cmdnode->callback_arg = callback_arg;
1535
1536 /* Copy the incoming command to the buffer */
1537 memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size);
1538
1539 /* Set command, clean result, move to buffer */
1540 cmdnode->cmdbuf->command = cpu_to_le16(command);
1541 cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size);
1542 cmdnode->cmdbuf->result = 0;
1543
1544 lbs_deb_host("PREP_CMD: command 0x%04x\n", command);
1545
1546 cmdnode->cmdwaitqwoken = 0;
1547 lbs_queue_cmd(priv, cmdnode);
1548 wake_up(&priv->waitq);
1549
1550 done:
1551 return cmdnode;
1552}
1553
1554void lbs_cmd_async(struct lbs_private *priv, uint16_t command,
1555 struct cmd_header *in_cmd, int in_cmd_size)
1556{
1557 __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1558 lbs_cmd_async_callback, 0);
1559}
1560
1561int __lbs_cmd(struct lbs_private *priv, uint16_t command,
1562 struct cmd_header *in_cmd, int in_cmd_size,
1563 int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1564 unsigned long callback_arg)
1565{
1566 struct cmd_ctrl_node *cmdnode;
1567 unsigned long flags;
1568 int ret = 0;
1569
1570 cmdnode = __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1571 callback, callback_arg);
1572 if (IS_ERR(cmdnode)) {
1573 ret = PTR_ERR(cmdnode);
1574 goto done;
1575 }
1576
1577 might_sleep();
1578
1579 /*
1580 * Be careful with signals here. A signal may be received as the system
1581 * goes into suspend or resume. We do not want this to interrupt the
1582 * command, so we perform an uninterruptible sleep.
1583 */
1584 wait_event(cmdnode->cmdwait_q, cmdnode->cmdwaitqwoken);
1585
1586 spin_lock_irqsave(&priv->driver_lock, flags);
1587 ret = cmdnode->result;
1588 if (ret)
1589 netdev_info(priv->dev, "PREP_CMD: command 0x%04x failed: %d\n",
1590 command, ret);
1591
1592 __lbs_cleanup_and_insert_cmd(priv, cmdnode);
1593 spin_unlock_irqrestore(&priv->driver_lock, flags);
1594
1595done:
1596 return ret;
1597}
1598EXPORT_SYMBOL_GPL(__lbs_cmd);