2 * This file contains the handling of command.
3 * It prepares command and sends it to firmware when it is ready.
6 #include <linux/kfifo.h>
7 #include <linux/sched.h>
8 #include <linux/slab.h>
9 #include <linux/if_arp.h>
15 #define CAL_NF(nf) ((s32)(-(s32)(nf)))
16 #define CAL_RSSI(snr, nf) ((s32)((s32)(snr) + CAL_NF(nf)))
19 * @brief Simple callback that copies response back into command
21 * @param priv A pointer to struct lbs_private structure
22 * @param extra A pointer to the original command structure for which
23 * 'resp' is a response
24 * @param resp A pointer to the command response
26 * @return 0 on success, error on failure
28 int lbs_cmd_copyback(struct lbs_private *priv, unsigned long extra,
29 struct cmd_header *resp)
31 struct cmd_header *buf = (void *)extra;
34 copy_len = min(le16_to_cpu(buf->size), le16_to_cpu(resp->size));
35 memcpy(buf, resp, copy_len);
38 EXPORT_SYMBOL_GPL(lbs_cmd_copyback);
41 * @brief Simple callback that ignores the result. Use this if
42 * you just want to send a command to the hardware, but don't
43 * care for the result.
46 * @param extra ignored
49 * @return 0 for success
51 static int lbs_cmd_async_callback(struct lbs_private *priv, unsigned long extra,
52 struct cmd_header *resp)
59 * @brief Checks whether a command is allowed in Power Save mode
61 * @param command the command ID
62 * @return 1 if allowed, 0 if not allowed
64 static u8 is_command_allowed_in_ps(u16 cmd)
69 case CMD_802_11_HOST_SLEEP_CFG:
78 * @brief Updates the hardware details like MAC address and regulatory region
80 * @param priv A pointer to struct lbs_private structure
82 * @return 0 on success, error on failure
84 int lbs_update_hw_spec(struct lbs_private *priv)
86 struct cmd_ds_get_hw_spec cmd;
90 lbs_deb_enter(LBS_DEB_CMD);
92 memset(&cmd, 0, sizeof(cmd));
93 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
94 memcpy(cmd.permanentaddr, priv->current_addr, ETH_ALEN);
95 ret = lbs_cmd_with_response(priv, CMD_GET_HW_SPEC, &cmd);
99 priv->fwcapinfo = le32_to_cpu(cmd.fwcapinfo);
101 /* The firmware release is in an interesting format: the patch
102 * level is in the most significant nibble ... so fix that: */
103 priv->fwrelease = le32_to_cpu(cmd.fwrelease);
104 priv->fwrelease = (priv->fwrelease << 8) |
105 (priv->fwrelease >> 24 & 0xff);
107 /* Some firmware capabilities:
108 * CF card firmware 5.0.16p0: cap 0x00000303
109 * USB dongle firmware 5.110.17p2: cap 0x00000303
111 lbs_pr_info("%pM, fw %u.%u.%up%u, cap 0x%08x\n",
113 priv->fwrelease >> 24 & 0xff,
114 priv->fwrelease >> 16 & 0xff,
115 priv->fwrelease >> 8 & 0xff,
116 priv->fwrelease & 0xff,
118 lbs_deb_cmd("GET_HW_SPEC: hardware interface 0x%x, hardware spec 0x%04x\n",
119 cmd.hwifversion, cmd.version);
121 /* Clamp region code to 8-bit since FW spec indicates that it should
122 * only ever be 8-bit, even though the field size is 16-bit. Some firmware
123 * returns non-zero high 8 bits here.
125 * Firmware version 4.0.102 used in CF8381 has region code shifted. We
126 * need to check for this problem and handle it properly.
128 if (MRVL_FW_MAJOR_REV(priv->fwrelease) == MRVL_FW_V4)
129 priv->regioncode = (le16_to_cpu(cmd.regioncode) >> 8) & 0xFF;
131 priv->regioncode = le16_to_cpu(cmd.regioncode) & 0xFF;
133 for (i = 0; i < MRVDRV_MAX_REGION_CODE; i++) {
134 /* use the region code to search for the index */
135 if (priv->regioncode == lbs_region_code_to_index[i])
139 /* if it's unidentified region code, use the default (USA) */
140 if (i >= MRVDRV_MAX_REGION_CODE) {
141 priv->regioncode = 0x10;
142 lbs_pr_info("unidentified region code; using the default (USA)\n");
145 if (priv->current_addr[0] == 0xff)
146 memmove(priv->current_addr, cmd.permanentaddr, ETH_ALEN);
148 if (!priv->copied_hwaddr) {
149 memcpy(priv->dev->dev_addr, priv->current_addr, ETH_ALEN);
151 memcpy(priv->mesh_dev->dev_addr,
152 priv->current_addr, ETH_ALEN);
153 priv->copied_hwaddr = 1;
157 lbs_deb_leave(LBS_DEB_CMD);
161 static int lbs_ret_host_sleep_cfg(struct lbs_private *priv, unsigned long dummy,
162 struct cmd_header *resp)
164 lbs_deb_enter(LBS_DEB_CMD);
165 if (priv->is_host_sleep_activated) {
166 priv->is_host_sleep_configured = 0;
167 if (priv->psstate == PS_STATE_FULL_POWER) {
168 priv->is_host_sleep_activated = 0;
169 wake_up_interruptible(&priv->host_sleep_q);
172 priv->is_host_sleep_configured = 1;
174 lbs_deb_leave(LBS_DEB_CMD);
178 int lbs_host_sleep_cfg(struct lbs_private *priv, uint32_t criteria,
179 struct wol_config *p_wol_config)
181 struct cmd_ds_host_sleep cmd_config;
185 * Certain firmware versions do not support EHS_REMOVE_WAKEUP command
186 * and the card will return a failure. Since we need to be
187 * able to reset the mask, in those cases we set a 0 mask instead.
189 if (criteria == EHS_REMOVE_WAKEUP && !priv->ehs_remove_supported)
192 cmd_config.hdr.size = cpu_to_le16(sizeof(cmd_config));
193 cmd_config.criteria = cpu_to_le32(criteria);
194 cmd_config.gpio = priv->wol_gpio;
195 cmd_config.gap = priv->wol_gap;
197 if (p_wol_config != NULL)
198 memcpy((uint8_t *)&cmd_config.wol_conf, (uint8_t *)p_wol_config,
199 sizeof(struct wol_config));
201 cmd_config.wol_conf.action = CMD_ACT_ACTION_NONE;
203 ret = __lbs_cmd(priv, CMD_802_11_HOST_SLEEP_CFG, &cmd_config.hdr,
204 le16_to_cpu(cmd_config.hdr.size),
205 lbs_ret_host_sleep_cfg, 0);
208 memcpy((uint8_t *) p_wol_config,
209 (uint8_t *)&cmd_config.wol_conf,
210 sizeof(struct wol_config));
212 lbs_pr_info("HOST_SLEEP_CFG failed %d\n", ret);
217 EXPORT_SYMBOL_GPL(lbs_host_sleep_cfg);
220 * @brief Sets the Power Save mode
222 * @param priv A pointer to struct lbs_private structure
223 * @param cmd_action The Power Save operation (PS_MODE_ACTION_ENTER_PS or
224 * PS_MODE_ACTION_EXIT_PS)
225 * @param block Whether to block on a response or not
227 * @return 0 on success, error on failure
229 int lbs_set_ps_mode(struct lbs_private *priv, u16 cmd_action, bool block)
231 struct cmd_ds_802_11_ps_mode cmd;
234 lbs_deb_enter(LBS_DEB_CMD);
236 memset(&cmd, 0, sizeof(cmd));
237 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
238 cmd.action = cpu_to_le16(cmd_action);
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");
246 /* We don't handle CONFIRM_SLEEP here because it needs to
247 * be fastpathed to the firmware.
249 lbs_deb_cmd("PS_MODE: unknown action 0x%X\n", cmd_action);
255 ret = lbs_cmd_with_response(priv, CMD_802_11_PS_MODE, &cmd);
257 lbs_cmd_async(priv, CMD_802_11_PS_MODE, &cmd.hdr, sizeof (cmd));
260 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
264 int lbs_cmd_802_11_sleep_params(struct lbs_private *priv, uint16_t cmd_action,
265 struct sleep_params *sp)
267 struct cmd_ds_802_11_sleep_params cmd;
270 lbs_deb_enter(LBS_DEB_CMD);
272 if (cmd_action == CMD_ACT_GET) {
273 memset(&cmd, 0, sizeof(cmd));
275 cmd.error = cpu_to_le16(sp->sp_error);
276 cmd.offset = cpu_to_le16(sp->sp_offset);
277 cmd.stabletime = cpu_to_le16(sp->sp_stabletime);
278 cmd.calcontrol = sp->sp_calcontrol;
279 cmd.externalsleepclk = sp->sp_extsleepclk;
280 cmd.reserved = cpu_to_le16(sp->sp_reserved);
282 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
283 cmd.action = cpu_to_le16(cmd_action);
285 ret = lbs_cmd_with_response(priv, CMD_802_11_SLEEP_PARAMS, &cmd);
288 lbs_deb_cmd("error 0x%x, offset 0x%x, stabletime 0x%x, "
289 "calcontrol 0x%x extsleepclk 0x%x\n",
290 le16_to_cpu(cmd.error), le16_to_cpu(cmd.offset),
291 le16_to_cpu(cmd.stabletime), cmd.calcontrol,
292 cmd.externalsleepclk);
294 sp->sp_error = le16_to_cpu(cmd.error);
295 sp->sp_offset = le16_to_cpu(cmd.offset);
296 sp->sp_stabletime = le16_to_cpu(cmd.stabletime);
297 sp->sp_calcontrol = cmd.calcontrol;
298 sp->sp_extsleepclk = cmd.externalsleepclk;
299 sp->sp_reserved = le16_to_cpu(cmd.reserved);
302 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
306 static int lbs_wait_for_ds_awake(struct lbs_private *priv)
310 lbs_deb_enter(LBS_DEB_CMD);
312 if (priv->is_deep_sleep) {
313 if (!wait_event_interruptible_timeout(priv->ds_awake_q,
314 !priv->is_deep_sleep, (10 * HZ))) {
315 lbs_pr_err("ds_awake_q: timer expired\n");
320 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
324 int lbs_set_deep_sleep(struct lbs_private *priv, int deep_sleep)
328 lbs_deb_enter(LBS_DEB_CMD);
331 if (priv->is_deep_sleep != 1) {
332 lbs_deb_cmd("deep sleep: sleep\n");
333 BUG_ON(!priv->enter_deep_sleep);
334 ret = priv->enter_deep_sleep(priv);
336 netif_stop_queue(priv->dev);
337 netif_carrier_off(priv->dev);
340 lbs_pr_err("deep sleep: already enabled\n");
343 if (priv->is_deep_sleep) {
344 lbs_deb_cmd("deep sleep: wakeup\n");
345 BUG_ON(!priv->exit_deep_sleep);
346 ret = priv->exit_deep_sleep(priv);
348 ret = lbs_wait_for_ds_awake(priv);
350 lbs_pr_err("deep sleep: wakeup"
356 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
360 static int lbs_ret_host_sleep_activate(struct lbs_private *priv,
362 struct cmd_header *cmd)
364 lbs_deb_enter(LBS_DEB_FW);
365 priv->is_host_sleep_activated = 1;
366 wake_up_interruptible(&priv->host_sleep_q);
367 lbs_deb_leave(LBS_DEB_FW);
371 int lbs_set_host_sleep(struct lbs_private *priv, int host_sleep)
373 struct cmd_header cmd;
375 uint32_t criteria = EHS_REMOVE_WAKEUP;
377 lbs_deb_enter(LBS_DEB_CMD);
380 if (priv->is_host_sleep_activated != 1) {
381 memset(&cmd, 0, sizeof(cmd));
382 ret = lbs_host_sleep_cfg(priv, priv->wol_criteria,
383 (struct wol_config *)NULL);
385 lbs_pr_info("Host sleep configuration failed: "
389 if (priv->psstate == PS_STATE_FULL_POWER) {
390 ret = __lbs_cmd(priv,
391 CMD_802_11_HOST_SLEEP_ACTIVATE,
394 lbs_ret_host_sleep_activate, 0);
396 lbs_pr_info("HOST_SLEEP_ACTIVATE "
397 "failed: %d\n", ret);
400 if (!wait_event_interruptible_timeout(
402 priv->is_host_sleep_activated,
404 lbs_pr_err("host_sleep_q: timer expired\n");
408 lbs_pr_err("host sleep: already enabled\n");
411 if (priv->is_host_sleep_activated)
412 ret = lbs_host_sleep_cfg(priv, criteria,
413 (struct wol_config *)NULL);
420 * @brief Set an SNMP MIB value
422 * @param priv A pointer to struct lbs_private structure
423 * @param oid The OID to set in the firmware
424 * @param val Value to set the OID to
426 * @return 0 on success, error on failure
428 int lbs_set_snmp_mib(struct lbs_private *priv, u32 oid, u16 val)
430 struct cmd_ds_802_11_snmp_mib cmd;
433 lbs_deb_enter(LBS_DEB_CMD);
435 memset(&cmd, 0, sizeof (cmd));
436 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
437 cmd.action = cpu_to_le16(CMD_ACT_SET);
438 cmd.oid = cpu_to_le16((u16) oid);
441 case SNMP_MIB_OID_BSS_TYPE:
442 cmd.bufsize = cpu_to_le16(sizeof(u8));
445 case SNMP_MIB_OID_11D_ENABLE:
446 case SNMP_MIB_OID_FRAG_THRESHOLD:
447 case SNMP_MIB_OID_RTS_THRESHOLD:
448 case SNMP_MIB_OID_SHORT_RETRY_LIMIT:
449 case SNMP_MIB_OID_LONG_RETRY_LIMIT:
450 cmd.bufsize = cpu_to_le16(sizeof(u16));
451 *((__le16 *)(&cmd.value)) = cpu_to_le16(val);
454 lbs_deb_cmd("SNMP_CMD: (set) unhandled OID 0x%x\n", oid);
459 lbs_deb_cmd("SNMP_CMD: (set) oid 0x%x, oid size 0x%x, value 0x%x\n",
460 le16_to_cpu(cmd.oid), le16_to_cpu(cmd.bufsize), val);
462 ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
465 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
470 * @brief Get an SNMP MIB value
472 * @param priv A pointer to struct lbs_private structure
473 * @param oid The OID to retrieve from the firmware
474 * @param out_val Location for the returned value
476 * @return 0 on success, error on failure
478 int lbs_get_snmp_mib(struct lbs_private *priv, u32 oid, u16 *out_val)
480 struct cmd_ds_802_11_snmp_mib cmd;
483 lbs_deb_enter(LBS_DEB_CMD);
485 memset(&cmd, 0, sizeof (cmd));
486 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
487 cmd.action = cpu_to_le16(CMD_ACT_GET);
488 cmd.oid = cpu_to_le16(oid);
490 ret = lbs_cmd_with_response(priv, CMD_802_11_SNMP_MIB, &cmd);
494 switch (le16_to_cpu(cmd.bufsize)) {
496 *out_val = cmd.value[0];
499 *out_val = le16_to_cpu(*((__le16 *)(&cmd.value)));
502 lbs_deb_cmd("SNMP_CMD: (get) unhandled OID 0x%x size %d\n",
503 oid, le16_to_cpu(cmd.bufsize));
508 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
513 * @brief Get the min, max, and current TX power
515 * @param priv A pointer to struct lbs_private structure
516 * @param curlevel Current power level in dBm
517 * @param minlevel Minimum supported power level in dBm (optional)
518 * @param maxlevel Maximum supported power level in dBm (optional)
520 * @return 0 on success, error on failure
522 int lbs_get_tx_power(struct lbs_private *priv, s16 *curlevel, s16 *minlevel,
525 struct cmd_ds_802_11_rf_tx_power cmd;
528 lbs_deb_enter(LBS_DEB_CMD);
530 memset(&cmd, 0, sizeof(cmd));
531 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
532 cmd.action = cpu_to_le16(CMD_ACT_GET);
534 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
536 *curlevel = le16_to_cpu(cmd.curlevel);
538 *minlevel = cmd.minlevel;
540 *maxlevel = cmd.maxlevel;
543 lbs_deb_leave(LBS_DEB_CMD);
548 * @brief Set the TX power
550 * @param priv A pointer to struct lbs_private structure
551 * @param dbm The desired power level in dBm
553 * @return 0 on success, error on failure
555 int lbs_set_tx_power(struct lbs_private *priv, s16 dbm)
557 struct cmd_ds_802_11_rf_tx_power cmd;
560 lbs_deb_enter(LBS_DEB_CMD);
562 memset(&cmd, 0, sizeof(cmd));
563 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
564 cmd.action = cpu_to_le16(CMD_ACT_SET);
565 cmd.curlevel = cpu_to_le16(dbm);
567 lbs_deb_cmd("SET_RF_TX_POWER: %d dBm\n", dbm);
569 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_TX_POWER, &cmd);
571 lbs_deb_leave(LBS_DEB_CMD);
576 * @brief Enable or disable monitor mode (only implemented on OLPC usb8388 FW)
578 * @param priv A pointer to struct lbs_private structure
579 * @param enable 1 to enable monitor mode, 0 to disable
581 * @return 0 on success, error on failure
583 int lbs_set_monitor_mode(struct lbs_private *priv, int enable)
585 struct cmd_ds_802_11_monitor_mode cmd;
588 memset(&cmd, 0, sizeof(cmd));
589 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
590 cmd.action = cpu_to_le16(CMD_ACT_SET);
592 cmd.mode = cpu_to_le16(0x1);
594 lbs_deb_cmd("SET_MONITOR_MODE: %d\n", enable);
596 ret = lbs_cmd_with_response(priv, CMD_802_11_MONITOR_MODE, &cmd);
598 priv->dev->type = enable ? ARPHRD_IEEE80211_RADIOTAP :
602 lbs_deb_leave(LBS_DEB_CMD);
607 * @brief Get the radio channel
609 * @param priv A pointer to struct lbs_private structure
611 * @return The channel on success, error on failure
613 static int lbs_get_channel(struct lbs_private *priv)
615 struct cmd_ds_802_11_rf_channel cmd;
618 lbs_deb_enter(LBS_DEB_CMD);
620 memset(&cmd, 0, sizeof(cmd));
621 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
622 cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_GET);
624 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
628 ret = le16_to_cpu(cmd.channel);
629 lbs_deb_cmd("current radio channel is %d\n", ret);
632 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
636 int lbs_update_channel(struct lbs_private *priv)
640 /* the channel in f/w could be out of sync; get the current channel */
641 lbs_deb_enter(LBS_DEB_ASSOC);
643 ret = lbs_get_channel(priv);
648 lbs_deb_leave_args(LBS_DEB_ASSOC, "ret %d", ret);
653 * @brief Set the radio channel
655 * @param priv A pointer to struct lbs_private structure
656 * @param channel The desired channel, or 0 to clear a locked channel
658 * @return 0 on success, error on failure
660 int lbs_set_channel(struct lbs_private *priv, u8 channel)
662 struct cmd_ds_802_11_rf_channel cmd;
664 u8 old_channel = priv->channel;
668 lbs_deb_enter(LBS_DEB_CMD);
670 memset(&cmd, 0, sizeof(cmd));
671 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
672 cmd.action = cpu_to_le16(CMD_OPT_802_11_RF_CHANNEL_SET);
673 cmd.channel = cpu_to_le16(channel);
675 ret = lbs_cmd_with_response(priv, CMD_802_11_RF_CHANNEL, &cmd);
679 priv->channel = (uint8_t) le16_to_cpu(cmd.channel);
680 lbs_deb_cmd("channel switch from %d to %d\n", old_channel,
684 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
689 * @brief Get current RSSI and noise floor
691 * @param priv A pointer to struct lbs_private structure
692 * @param rssi On successful return, signal level in mBm
694 * @return The channel on success, error on failure
696 int lbs_get_rssi(struct lbs_private *priv, s8 *rssi, s8 *nf)
698 struct cmd_ds_802_11_rssi cmd;
701 lbs_deb_enter(LBS_DEB_CMD);
703 BUG_ON(rssi == NULL);
706 memset(&cmd, 0, sizeof(cmd));
707 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
708 /* Average SNR over last 8 beacons */
709 cmd.n_or_snr = cpu_to_le16(8);
711 ret = lbs_cmd_with_response(priv, CMD_802_11_RSSI, &cmd);
713 *nf = CAL_NF(le16_to_cpu(cmd.nf));
714 *rssi = CAL_RSSI(le16_to_cpu(cmd.n_or_snr), le16_to_cpu(cmd.nf));
717 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
722 * @brief Send regulatory and 802.11d domain information to the firmware
724 * @param priv pointer to struct lbs_private
725 * @param request cfg80211 regulatory request structure
726 * @param bands the device's supported bands and channels
728 * @return 0 on success, error code on failure
730 int lbs_set_11d_domain_info(struct lbs_private *priv,
731 struct regulatory_request *request,
732 struct ieee80211_supported_band **bands)
734 struct cmd_ds_802_11d_domain_info cmd;
735 struct mrvl_ie_domain_param_set *domain = &cmd.domain;
736 struct ieee80211_country_ie_triplet *t;
737 enum ieee80211_band band;
738 struct ieee80211_channel *ch;
740 u8 num_parsed_chan = 0;
741 u8 first_channel = 0, next_chan = 0, max_pwr = 0;
746 lbs_deb_enter(LBS_DEB_11D);
748 memset(&cmd, 0, sizeof(cmd));
749 cmd.action = cpu_to_le16(CMD_ACT_SET);
751 lbs_deb_11d("Setting country code '%c%c'\n",
752 request->alpha2[0], request->alpha2[1]);
754 domain->header.type = cpu_to_le16(TLV_TYPE_DOMAIN);
756 /* Set country code */
757 domain->country_code[0] = request->alpha2[0];
758 domain->country_code[1] = request->alpha2[1];
759 domain->country_code[2] = ' ';
761 /* Now set up the channel triplets; firmware is somewhat picky here
762 * and doesn't validate channel numbers and spans; hence it would
763 * interpret a triplet of (36, 4, 20) as channels 36, 37, 38, 39. Since
764 * the last 3 aren't valid channels, the driver is responsible for
765 * splitting that up into 4 triplet pairs of (36, 1, 20) + (40, 1, 20)
769 (band < IEEE80211_NUM_BANDS) && (num_triplet < MAX_11D_TRIPLETS);
776 (i < bands[band]->n_channels) && (num_triplet < MAX_11D_TRIPLETS);
778 ch = &bands[band]->channels[i];
779 if (ch->flags & IEEE80211_CHAN_DISABLED)
784 next_chan = first_channel = (u32) ch->hw_value;
785 max_pwr = ch->max_power;
790 if ((ch->hw_value == next_chan + 1) &&
791 (ch->max_power == max_pwr)) {
792 /* Consolidate adjacent channels */
796 /* Add this triplet */
797 lbs_deb_11d("11D triplet (%d, %d, %d)\n",
798 first_channel, num_parsed_chan,
800 t = &domain->triplet[num_triplet];
801 t->chans.first_channel = first_channel;
802 t->chans.num_channels = num_parsed_chan;
803 t->chans.max_power = max_pwr;
810 /* Add last triplet */
811 lbs_deb_11d("11D triplet (%d, %d, %d)\n", first_channel,
812 num_parsed_chan, max_pwr);
813 t = &domain->triplet[num_triplet];
814 t->chans.first_channel = first_channel;
815 t->chans.num_channels = num_parsed_chan;
816 t->chans.max_power = max_pwr;
821 lbs_deb_11d("# triplets %d\n", num_triplet);
823 /* Set command header sizes */
824 triplet_size = num_triplet * sizeof(struct ieee80211_country_ie_triplet);
825 domain->header.len = cpu_to_le16(sizeof(domain->country_code) +
828 lbs_deb_hex(LBS_DEB_11D, "802.11D domain param set",
829 (u8 *) &cmd.domain.country_code,
830 le16_to_cpu(domain->header.len));
832 cmd.hdr.size = cpu_to_le16(sizeof(cmd.hdr) +
834 sizeof(cmd.domain.header) +
835 sizeof(cmd.domain.country_code) +
838 ret = lbs_cmd_with_response(priv, CMD_802_11D_DOMAIN_INFO, &cmd);
840 lbs_deb_leave_args(LBS_DEB_11D, "ret %d", ret);
845 * @brief Read a MAC, Baseband, or RF register
847 * @param priv pointer to struct lbs_private
848 * @param cmd register command, one of CMD_MAC_REG_ACCESS,
849 * CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS
850 * @param offset byte offset of the register to get
851 * @param value on success, the value of the register at 'offset'
853 * @return 0 on success, error code on failure
855 int lbs_get_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 *value)
857 struct cmd_ds_reg_access cmd;
860 lbs_deb_enter(LBS_DEB_CMD);
862 BUG_ON(value == NULL);
864 memset(&cmd, 0, sizeof(cmd));
865 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
866 cmd.action = cpu_to_le16(CMD_ACT_GET);
868 if (reg != CMD_MAC_REG_ACCESS &&
869 reg != CMD_BBP_REG_ACCESS &&
870 reg != CMD_RF_REG_ACCESS) {
875 ret = lbs_cmd_with_response(priv, reg, &cmd);
877 if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS)
878 *value = cmd.value.bbp_rf;
879 else if (reg == CMD_MAC_REG_ACCESS)
880 *value = le32_to_cpu(cmd.value.mac);
884 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
889 * @brief Write a MAC, Baseband, or RF register
891 * @param priv pointer to struct lbs_private
892 * @param cmd register command, one of CMD_MAC_REG_ACCESS,
893 * CMD_BBP_REG_ACCESS, or CMD_RF_REG_ACCESS
894 * @param offset byte offset of the register to set
895 * @param value the value to write to the register at 'offset'
897 * @return 0 on success, error code on failure
899 int lbs_set_reg(struct lbs_private *priv, u16 reg, u16 offset, u32 value)
901 struct cmd_ds_reg_access cmd;
904 lbs_deb_enter(LBS_DEB_CMD);
906 memset(&cmd, 0, sizeof(cmd));
907 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
908 cmd.action = cpu_to_le16(CMD_ACT_SET);
910 if (reg == CMD_BBP_REG_ACCESS || reg == CMD_RF_REG_ACCESS)
911 cmd.value.bbp_rf = (u8) (value & 0xFF);
912 else if (reg == CMD_MAC_REG_ACCESS)
913 cmd.value.mac = cpu_to_le32(value);
919 ret = lbs_cmd_with_response(priv, reg, &cmd);
922 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
926 static void lbs_queue_cmd(struct lbs_private *priv,
927 struct cmd_ctrl_node *cmdnode)
932 lbs_deb_enter(LBS_DEB_HOST);
935 lbs_deb_host("QUEUE_CMD: cmdnode is NULL\n");
938 if (!cmdnode->cmdbuf->size) {
939 lbs_deb_host("DNLD_CMD: cmd size is zero\n");
944 /* Exit_PS command needs to be queued in the header always. */
945 if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_PS_MODE) {
946 struct cmd_ds_802_11_ps_mode *psm = (void *) &cmdnode->cmdbuf;
948 if (psm->action == cpu_to_le16(PS_MODE_ACTION_EXIT_PS)) {
949 if (priv->psstate != PS_STATE_FULL_POWER)
954 if (le16_to_cpu(cmdnode->cmdbuf->command) == CMD_802_11_WAKEUP_CONFIRM)
957 spin_lock_irqsave(&priv->driver_lock, flags);
960 list_add_tail(&cmdnode->list, &priv->cmdpendingq);
962 list_add(&cmdnode->list, &priv->cmdpendingq);
964 spin_unlock_irqrestore(&priv->driver_lock, flags);
966 lbs_deb_host("QUEUE_CMD: inserted command 0x%04x into cmdpendingq\n",
967 le16_to_cpu(cmdnode->cmdbuf->command));
970 lbs_deb_leave(LBS_DEB_HOST);
973 static void lbs_submit_command(struct lbs_private *priv,
974 struct cmd_ctrl_node *cmdnode)
977 struct cmd_header *cmd;
983 lbs_deb_enter(LBS_DEB_HOST);
985 cmd = cmdnode->cmdbuf;
987 spin_lock_irqsave(&priv->driver_lock, flags);
988 priv->cur_cmd = cmdnode;
989 spin_unlock_irqrestore(&priv->driver_lock, flags);
991 cmdsize = le16_to_cpu(cmd->size);
992 command = le16_to_cpu(cmd->command);
994 /* These commands take longer */
995 if (command == CMD_802_11_SCAN || command == CMD_802_11_ASSOCIATE)
998 lbs_deb_cmd("DNLD_CMD: command 0x%04x, seq %d, size %d\n",
999 command, le16_to_cpu(cmd->seqnum), cmdsize);
1000 lbs_deb_hex(LBS_DEB_CMD, "DNLD_CMD", (void *) cmdnode->cmdbuf, cmdsize);
1002 ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) cmd, cmdsize);
1005 lbs_pr_info("DNLD_CMD: hw_host_to_card failed: %d\n", ret);
1006 /* Let the timer kick in and retry, and potentially reset
1007 the whole thing if the condition persists */
1011 if (command == CMD_802_11_DEEP_SLEEP) {
1012 if (priv->is_auto_deep_sleep_enabled) {
1013 priv->wakeup_dev_required = 1;
1014 priv->dnld_sent = 0;
1016 priv->is_deep_sleep = 1;
1017 lbs_complete_command(priv, cmdnode, 0);
1019 /* Setup the timer after transmit command */
1020 mod_timer(&priv->command_timer, jiffies + timeo);
1023 lbs_deb_leave(LBS_DEB_HOST);
1027 * This function inserts command node to cmdfreeq
1028 * after cleans it. Requires priv->driver_lock held.
1030 static void __lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
1031 struct cmd_ctrl_node *cmdnode)
1033 lbs_deb_enter(LBS_DEB_HOST);
1038 cmdnode->callback = NULL;
1039 cmdnode->callback_arg = 0;
1041 memset(cmdnode->cmdbuf, 0, LBS_CMD_BUFFER_SIZE);
1043 list_add_tail(&cmdnode->list, &priv->cmdfreeq);
1045 lbs_deb_leave(LBS_DEB_HOST);
1048 static void lbs_cleanup_and_insert_cmd(struct lbs_private *priv,
1049 struct cmd_ctrl_node *ptempcmd)
1051 unsigned long flags;
1053 spin_lock_irqsave(&priv->driver_lock, flags);
1054 __lbs_cleanup_and_insert_cmd(priv, ptempcmd);
1055 spin_unlock_irqrestore(&priv->driver_lock, flags);
1058 void lbs_complete_command(struct lbs_private *priv, struct cmd_ctrl_node *cmd,
1061 cmd->result = result;
1062 cmd->cmdwaitqwoken = 1;
1063 wake_up_interruptible(&cmd->cmdwait_q);
1065 if (!cmd->callback || cmd->callback == lbs_cmd_async_callback)
1066 __lbs_cleanup_and_insert_cmd(priv, cmd);
1067 priv->cur_cmd = NULL;
1070 int lbs_set_radio(struct lbs_private *priv, u8 preamble, u8 radio_on)
1072 struct cmd_ds_802_11_radio_control cmd;
1075 lbs_deb_enter(LBS_DEB_CMD);
1077 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1078 cmd.action = cpu_to_le16(CMD_ACT_SET);
1080 /* Only v8 and below support setting the preamble */
1081 if (priv->fwrelease < 0x09000000) {
1083 case RADIO_PREAMBLE_SHORT:
1084 case RADIO_PREAMBLE_AUTO:
1085 case RADIO_PREAMBLE_LONG:
1086 cmd.control = cpu_to_le16(preamble);
1094 cmd.control |= cpu_to_le16(0x1);
1096 cmd.control &= cpu_to_le16(~0x1);
1097 priv->txpower_cur = 0;
1100 lbs_deb_cmd("RADIO_CONTROL: radio %s, preamble %d\n",
1101 radio_on ? "ON" : "OFF", preamble);
1103 priv->radio_on = radio_on;
1105 ret = lbs_cmd_with_response(priv, CMD_802_11_RADIO_CONTROL, &cmd);
1108 lbs_deb_leave_args(LBS_DEB_CMD, "ret %d", ret);
1112 void lbs_set_mac_control(struct lbs_private *priv)
1114 struct cmd_ds_mac_control cmd;
1116 lbs_deb_enter(LBS_DEB_CMD);
1118 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1119 cmd.action = cpu_to_le16(priv->mac_control);
1122 lbs_cmd_async(priv, CMD_MAC_CONTROL, &cmd.hdr, sizeof(cmd));
1124 lbs_deb_leave(LBS_DEB_CMD);
1128 * @brief This function allocates the command buffer and link
1129 * it to command free queue.
1131 * @param priv A pointer to struct lbs_private structure
1134 int lbs_allocate_cmd_buffer(struct lbs_private *priv)
1139 struct cmd_ctrl_node *cmdarray;
1141 lbs_deb_enter(LBS_DEB_HOST);
1143 /* Allocate and initialize the command array */
1144 bufsize = sizeof(struct cmd_ctrl_node) * LBS_NUM_CMD_BUFFERS;
1145 if (!(cmdarray = kzalloc(bufsize, GFP_KERNEL))) {
1146 lbs_deb_host("ALLOC_CMD_BUF: tempcmd_array is NULL\n");
1150 priv->cmd_array = cmdarray;
1152 /* Allocate and initialize each command buffer in the command array */
1153 for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1154 cmdarray[i].cmdbuf = kzalloc(LBS_CMD_BUFFER_SIZE, GFP_KERNEL);
1155 if (!cmdarray[i].cmdbuf) {
1156 lbs_deb_host("ALLOC_CMD_BUF: ptempvirtualaddr is NULL\n");
1162 for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1163 init_waitqueue_head(&cmdarray[i].cmdwait_q);
1164 lbs_cleanup_and_insert_cmd(priv, &cmdarray[i]);
1169 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1174 * @brief This function frees the command buffer.
1176 * @param priv A pointer to struct lbs_private structure
1179 int lbs_free_cmd_buffer(struct lbs_private *priv)
1181 struct cmd_ctrl_node *cmdarray;
1184 lbs_deb_enter(LBS_DEB_HOST);
1186 /* need to check if cmd array is allocated or not */
1187 if (priv->cmd_array == NULL) {
1188 lbs_deb_host("FREE_CMD_BUF: cmd_array is NULL\n");
1192 cmdarray = priv->cmd_array;
1194 /* Release shared memory buffers */
1195 for (i = 0; i < LBS_NUM_CMD_BUFFERS; i++) {
1196 if (cmdarray[i].cmdbuf) {
1197 kfree(cmdarray[i].cmdbuf);
1198 cmdarray[i].cmdbuf = NULL;
1202 /* Release cmd_ctrl_node */
1203 if (priv->cmd_array) {
1204 kfree(priv->cmd_array);
1205 priv->cmd_array = NULL;
1209 lbs_deb_leave(LBS_DEB_HOST);
1214 * @brief This function gets a free command node if available in
1215 * command free queue.
1217 * @param priv A pointer to struct lbs_private structure
1218 * @return cmd_ctrl_node A pointer to cmd_ctrl_node structure or NULL
1220 static struct cmd_ctrl_node *lbs_get_free_cmd_node(struct lbs_private *priv)
1222 struct cmd_ctrl_node *tempnode;
1223 unsigned long flags;
1225 lbs_deb_enter(LBS_DEB_HOST);
1230 spin_lock_irqsave(&priv->driver_lock, flags);
1232 if (!list_empty(&priv->cmdfreeq)) {
1233 tempnode = list_first_entry(&priv->cmdfreeq,
1234 struct cmd_ctrl_node, list);
1235 list_del(&tempnode->list);
1237 lbs_deb_host("GET_CMD_NODE: cmd_ctrl_node is not available\n");
1241 spin_unlock_irqrestore(&priv->driver_lock, flags);
1243 lbs_deb_leave(LBS_DEB_HOST);
1248 * @brief This function executes next command in command
1249 * pending queue. It will put firmware back to PS mode
1252 * @param priv A pointer to struct lbs_private structure
1255 int lbs_execute_next_command(struct lbs_private *priv)
1257 struct cmd_ctrl_node *cmdnode = NULL;
1258 struct cmd_header *cmd;
1259 unsigned long flags;
1262 /* Debug group is LBS_DEB_THREAD and not LBS_DEB_HOST, because the
1263 * only caller to us is lbs_thread() and we get even when a
1264 * data packet is received */
1265 lbs_deb_enter(LBS_DEB_THREAD);
1267 spin_lock_irqsave(&priv->driver_lock, flags);
1269 if (priv->cur_cmd) {
1270 lbs_pr_alert( "EXEC_NEXT_CMD: already processing command!\n");
1271 spin_unlock_irqrestore(&priv->driver_lock, flags);
1276 if (!list_empty(&priv->cmdpendingq)) {
1277 cmdnode = list_first_entry(&priv->cmdpendingq,
1278 struct cmd_ctrl_node, list);
1281 spin_unlock_irqrestore(&priv->driver_lock, flags);
1284 cmd = cmdnode->cmdbuf;
1286 if (is_command_allowed_in_ps(le16_to_cpu(cmd->command))) {
1287 if ((priv->psstate == PS_STATE_SLEEP) ||
1288 (priv->psstate == PS_STATE_PRE_SLEEP)) {
1290 "EXEC_NEXT_CMD: cannot send cmd 0x%04x in psstate %d\n",
1291 le16_to_cpu(cmd->command),
1296 lbs_deb_host("EXEC_NEXT_CMD: OK to send command "
1297 "0x%04x in psstate %d\n",
1298 le16_to_cpu(cmd->command), priv->psstate);
1299 } else if (priv->psstate != PS_STATE_FULL_POWER) {
1301 * 1. Non-PS command:
1302 * Queue it. set needtowakeup to TRUE if current state
1303 * is SLEEP, otherwise call send EXIT_PS.
1304 * 2. PS command but not EXIT_PS:
1306 * 3. PS command EXIT_PS:
1307 * Set needtowakeup to TRUE if current state is SLEEP,
1308 * otherwise send this command down to firmware
1311 if (cmd->command != cpu_to_le16(CMD_802_11_PS_MODE)) {
1312 /* Prepare to send Exit PS,
1313 * this non PS command will be sent later */
1314 if ((priv->psstate == PS_STATE_SLEEP)
1315 || (priv->psstate == PS_STATE_PRE_SLEEP)
1317 /* w/ new scheme, it will not reach here.
1318 since it is blocked in main_thread. */
1319 priv->needtowakeup = 1;
1321 lbs_set_ps_mode(priv,
1322 PS_MODE_ACTION_EXIT_PS,
1330 * PS command. Ignore it if it is not Exit_PS.
1331 * otherwise send it down immediately.
1333 struct cmd_ds_802_11_ps_mode *psm = (void *)&cmd[1];
1336 "EXEC_NEXT_CMD: PS cmd, action 0x%02x\n",
1339 cpu_to_le16(PS_MODE_ACTION_EXIT_PS)) {
1341 "EXEC_NEXT_CMD: ignore ENTER_PS cmd\n");
1342 list_del(&cmdnode->list);
1343 spin_lock_irqsave(&priv->driver_lock, flags);
1344 lbs_complete_command(priv, cmdnode, 0);
1345 spin_unlock_irqrestore(&priv->driver_lock, flags);
1351 if ((priv->psstate == PS_STATE_SLEEP) ||
1352 (priv->psstate == PS_STATE_PRE_SLEEP)) {
1354 "EXEC_NEXT_CMD: ignore EXIT_PS cmd in sleep\n");
1355 list_del(&cmdnode->list);
1356 spin_lock_irqsave(&priv->driver_lock, flags);
1357 lbs_complete_command(priv, cmdnode, 0);
1358 spin_unlock_irqrestore(&priv->driver_lock, flags);
1359 priv->needtowakeup = 1;
1366 "EXEC_NEXT_CMD: sending EXIT_PS\n");
1369 list_del(&cmdnode->list);
1370 lbs_deb_host("EXEC_NEXT_CMD: sending command 0x%04x\n",
1371 le16_to_cpu(cmd->command));
1372 lbs_submit_command(priv, cmdnode);
1375 * check if in power save mode, if yes, put the device back
1380 * This was the old code for libertas+wext. Someone that
1381 * understands this beast should re-code it in a sane way.
1383 * I actually don't understand why this is related to WPA
1384 * and to connection status, shouldn't powering should be
1385 * independ of such things?
1387 if ((priv->psmode != LBS802_11POWERMODECAM) &&
1388 (priv->psstate == PS_STATE_FULL_POWER) &&
1389 ((priv->connect_status == LBS_CONNECTED) ||
1390 lbs_mesh_connected(priv))) {
1391 if (priv->secinfo.WPAenabled ||
1392 priv->secinfo.WPA2enabled) {
1393 /* check for valid WPA group keys */
1394 if (priv->wpa_mcast_key.len ||
1395 priv->wpa_unicast_key.len) {
1397 "EXEC_NEXT_CMD: WPA enabled and GTK_SET"
1398 " go back to PS_SLEEP");
1399 lbs_set_ps_mode(priv,
1400 PS_MODE_ACTION_ENTER_PS,
1405 "EXEC_NEXT_CMD: cmdpendingq empty, "
1406 "go back to PS_SLEEP");
1407 lbs_set_ps_mode(priv, PS_MODE_ACTION_ENTER_PS,
1416 lbs_deb_leave(LBS_DEB_THREAD);
1420 static void lbs_send_confirmsleep(struct lbs_private *priv)
1422 unsigned long flags;
1425 lbs_deb_enter(LBS_DEB_HOST);
1426 lbs_deb_hex(LBS_DEB_HOST, "sleep confirm", (u8 *) &confirm_sleep,
1427 sizeof(confirm_sleep));
1429 ret = priv->hw_host_to_card(priv, MVMS_CMD, (u8 *) &confirm_sleep,
1430 sizeof(confirm_sleep));
1432 lbs_pr_alert("confirm_sleep failed\n");
1436 spin_lock_irqsave(&priv->driver_lock, flags);
1438 /* We don't get a response on the sleep-confirmation */
1439 priv->dnld_sent = DNLD_RES_RECEIVED;
1441 if (priv->is_host_sleep_configured) {
1442 priv->is_host_sleep_activated = 1;
1443 wake_up_interruptible(&priv->host_sleep_q);
1446 /* If nothing to do, go back to sleep (?) */
1447 if (!kfifo_len(&priv->event_fifo) && !priv->resp_len[priv->resp_idx])
1448 priv->psstate = PS_STATE_SLEEP;
1450 spin_unlock_irqrestore(&priv->driver_lock, flags);
1453 lbs_deb_leave(LBS_DEB_HOST);
1457 * @brief This function checks condition and prepares to
1458 * send sleep confirm command to firmware if ok.
1460 * @param priv A pointer to struct lbs_private structure
1461 * @param psmode Power Saving mode
1464 void lbs_ps_confirm_sleep(struct lbs_private *priv)
1466 unsigned long flags =0;
1469 lbs_deb_enter(LBS_DEB_HOST);
1471 spin_lock_irqsave(&priv->driver_lock, flags);
1472 if (priv->dnld_sent) {
1474 lbs_deb_host("dnld_sent was set\n");
1477 /* In-progress command? */
1478 if (priv->cur_cmd) {
1480 lbs_deb_host("cur_cmd was set\n");
1483 /* Pending events or command responses? */
1484 if (kfifo_len(&priv->event_fifo) || priv->resp_len[priv->resp_idx]) {
1486 lbs_deb_host("pending events or command responses\n");
1488 spin_unlock_irqrestore(&priv->driver_lock, flags);
1491 lbs_deb_host("sending lbs_ps_confirm_sleep\n");
1492 lbs_send_confirmsleep(priv);
1494 lbs_deb_host("sleep confirm has been delayed\n");
1497 lbs_deb_leave(LBS_DEB_HOST);
1502 * @brief Configures the transmission power control functionality.
1504 * @param priv A pointer to struct lbs_private structure
1505 * @param enable Transmission power control enable
1506 * @param p0 Power level when link quality is good (dBm).
1507 * @param p1 Power level when link quality is fair (dBm).
1508 * @param p2 Power level when link quality is poor (dBm).
1509 * @param usesnr Use Signal to Noise Ratio in TPC
1511 * @return 0 on success
1513 int lbs_set_tpc_cfg(struct lbs_private *priv, int enable, int8_t p0, int8_t p1,
1514 int8_t p2, int usesnr)
1516 struct cmd_ds_802_11_tpc_cfg cmd;
1519 memset(&cmd, 0, sizeof(cmd));
1520 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1521 cmd.action = cpu_to_le16(CMD_ACT_SET);
1522 cmd.enable = !!enable;
1523 cmd.usesnr = !!usesnr;
1528 ret = lbs_cmd_with_response(priv, CMD_802_11_TPC_CFG, &cmd);
1534 * @brief Configures the power adaptation settings.
1536 * @param priv A pointer to struct lbs_private structure
1537 * @param enable Power adaptation enable
1538 * @param p0 Power level for 1, 2, 5.5 and 11 Mbps (dBm).
1539 * @param p1 Power level for 6, 9, 12, 18, 22, 24 and 36 Mbps (dBm).
1540 * @param p2 Power level for 48 and 54 Mbps (dBm).
1542 * @return 0 on Success
1545 int lbs_set_power_adapt_cfg(struct lbs_private *priv, int enable, int8_t p0,
1546 int8_t p1, int8_t p2)
1548 struct cmd_ds_802_11_pa_cfg cmd;
1551 memset(&cmd, 0, sizeof(cmd));
1552 cmd.hdr.size = cpu_to_le16(sizeof(cmd));
1553 cmd.action = cpu_to_le16(CMD_ACT_SET);
1554 cmd.enable = !!enable;
1559 ret = lbs_cmd_with_response(priv, CMD_802_11_PA_CFG , &cmd);
1565 struct cmd_ctrl_node *__lbs_cmd_async(struct lbs_private *priv,
1566 uint16_t command, struct cmd_header *in_cmd, int in_cmd_size,
1567 int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1568 unsigned long callback_arg)
1570 struct cmd_ctrl_node *cmdnode;
1572 lbs_deb_enter(LBS_DEB_HOST);
1574 if (priv->surpriseremoved) {
1575 lbs_deb_host("PREP_CMD: card removed\n");
1576 cmdnode = ERR_PTR(-ENOENT);
1580 /* No commands are allowed in Deep Sleep until we toggle the GPIO
1581 * to wake up the card and it has signaled that it's ready.
1583 if (!priv->is_auto_deep_sleep_enabled) {
1584 if (priv->is_deep_sleep) {
1585 lbs_deb_cmd("command not allowed in deep sleep\n");
1586 cmdnode = ERR_PTR(-EBUSY);
1591 cmdnode = lbs_get_free_cmd_node(priv);
1592 if (cmdnode == NULL) {
1593 lbs_deb_host("PREP_CMD: cmdnode is NULL\n");
1595 /* Wake up main thread to execute next command */
1596 wake_up_interruptible(&priv->waitq);
1597 cmdnode = ERR_PTR(-ENOBUFS);
1601 cmdnode->callback = callback;
1602 cmdnode->callback_arg = callback_arg;
1604 /* Copy the incoming command to the buffer */
1605 memcpy(cmdnode->cmdbuf, in_cmd, in_cmd_size);
1607 /* Set sequence number, clean result, move to buffer */
1609 cmdnode->cmdbuf->command = cpu_to_le16(command);
1610 cmdnode->cmdbuf->size = cpu_to_le16(in_cmd_size);
1611 cmdnode->cmdbuf->seqnum = cpu_to_le16(priv->seqnum);
1612 cmdnode->cmdbuf->result = 0;
1614 lbs_deb_host("PREP_CMD: command 0x%04x\n", command);
1616 cmdnode->cmdwaitqwoken = 0;
1617 lbs_queue_cmd(priv, cmdnode);
1618 wake_up_interruptible(&priv->waitq);
1621 lbs_deb_leave_args(LBS_DEB_HOST, "ret %p", cmdnode);
1625 void lbs_cmd_async(struct lbs_private *priv, uint16_t command,
1626 struct cmd_header *in_cmd, int in_cmd_size)
1628 lbs_deb_enter(LBS_DEB_CMD);
1629 __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1630 lbs_cmd_async_callback, 0);
1631 lbs_deb_leave(LBS_DEB_CMD);
1634 int __lbs_cmd(struct lbs_private *priv, uint16_t command,
1635 struct cmd_header *in_cmd, int in_cmd_size,
1636 int (*callback)(struct lbs_private *, unsigned long, struct cmd_header *),
1637 unsigned long callback_arg)
1639 struct cmd_ctrl_node *cmdnode;
1640 unsigned long flags;
1643 lbs_deb_enter(LBS_DEB_HOST);
1645 cmdnode = __lbs_cmd_async(priv, command, in_cmd, in_cmd_size,
1646 callback, callback_arg);
1647 if (IS_ERR(cmdnode)) {
1648 ret = PTR_ERR(cmdnode);
1653 wait_event_interruptible(cmdnode->cmdwait_q, cmdnode->cmdwaitqwoken);
1655 spin_lock_irqsave(&priv->driver_lock, flags);
1656 ret = cmdnode->result;
1658 lbs_pr_info("PREP_CMD: command 0x%04x failed: %d\n",
1661 __lbs_cleanup_and_insert_cmd(priv, cmdnode);
1662 spin_unlock_irqrestore(&priv->driver_lock, flags);
1665 lbs_deb_leave_args(LBS_DEB_HOST, "ret %d", ret);
1668 EXPORT_SYMBOL_GPL(__lbs_cmd);