2 * WSM host interface (HI) implementation for
3 * ST-Ericsson CW1200 mac80211 drivers.
5 * Copyright (c) 2010, ST-Ericsson
6 * Author: Dmitry Tarnyagin <dmitry.tarnyagin@lockless.no>
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License version 2 as
10 * published by the Free Software Foundation.
13 #include <linux/skbuff.h>
14 #include <linux/wait.h>
15 #include <linux/delay.h>
16 #include <linux/sched.h>
17 #include <linux/random.h>
25 #define WSM_CMD_TIMEOUT (2 * HZ) /* With respect to interrupt loss */
26 #define WSM_CMD_START_TIMEOUT (7 * HZ)
27 #define WSM_CMD_RESET_TIMEOUT (3 * HZ) /* 2 sec. timeout was observed. */
28 #define WSM_CMD_MAX_TIMEOUT (3 * HZ)
30 #define WSM_SKIP(buf, size) \
32 if ((buf)->data + size > (buf)->end) \
34 (buf)->data += size; \
37 #define WSM_GET(buf, ptr, size) \
39 if ((buf)->data + size > (buf)->end) \
41 memcpy(ptr, (buf)->data, size); \
42 (buf)->data += size; \
45 #define __WSM_GET(buf, type, type2, cvt) \
48 if ((buf)->data + sizeof(type) > (buf)->end) \
50 val = cvt(*(type2 *)(buf)->data); \
51 (buf)->data += sizeof(type); \
55 #define WSM_GET8(buf) __WSM_GET(buf, u8, u8, (u8))
56 #define WSM_GET16(buf) __WSM_GET(buf, u16, __le16, __le16_to_cpu)
57 #define WSM_GET32(buf) __WSM_GET(buf, u32, __le32, __le32_to_cpu)
59 #define WSM_PUT(buf, ptr, size) \
61 if ((buf)->data + size > (buf)->end) \
62 if (wsm_buf_reserve((buf), size)) \
64 memcpy((buf)->data, ptr, size); \
65 (buf)->data += size; \
68 #define __WSM_PUT(buf, val, type, type2, cvt) \
70 if ((buf)->data + sizeof(type) > (buf)->end) \
71 if (wsm_buf_reserve((buf), sizeof(type))) \
73 *(type2 *)(buf)->data = cvt(val); \
74 (buf)->data += sizeof(type); \
77 #define WSM_PUT8(buf, val) __WSM_PUT(buf, val, u8, u8, (u8))
78 #define WSM_PUT16(buf, val) __WSM_PUT(buf, val, u16, __le16, __cpu_to_le16)
79 #define WSM_PUT32(buf, val) __WSM_PUT(buf, val, u32, __le32, __cpu_to_le32)
81 static void wsm_buf_reset(struct wsm_buf *buf);
82 static int wsm_buf_reserve(struct wsm_buf *buf, size_t extra_size);
84 static int wsm_cmd_send(struct cw1200_common *priv,
86 void *arg, u16 cmd, long tmo);
88 #define wsm_cmd_lock(__priv) mutex_lock(&((__priv)->wsm_cmd_mux))
89 #define wsm_cmd_unlock(__priv) mutex_unlock(&((__priv)->wsm_cmd_mux))
91 /* ******************************************************************** */
92 /* WSM API implementation */
94 static int wsm_generic_confirm(struct cw1200_common *priv,
98 u32 status = WSM_GET32(buf);
99 if (status != WSM_STATUS_SUCCESS)
108 int wsm_configuration(struct cw1200_common *priv, struct wsm_configuration *arg)
111 struct wsm_buf *buf = &priv->wsm_cmd_buf;
115 WSM_PUT32(buf, arg->dot11MaxTransmitMsduLifeTime);
116 WSM_PUT32(buf, arg->dot11MaxReceiveLifeTime);
117 WSM_PUT32(buf, arg->dot11RtsThreshold);
120 WSM_PUT16(buf, arg->dpdData_size + 12);
121 WSM_PUT16(buf, 1); /* DPD version */
122 WSM_PUT(buf, arg->dot11StationId, ETH_ALEN);
123 WSM_PUT16(buf, 5); /* DPD flags */
124 WSM_PUT(buf, arg->dpdData, arg->dpdData_size);
126 ret = wsm_cmd_send(priv, buf, arg,
127 WSM_CONFIGURATION_REQ_ID, WSM_CMD_TIMEOUT);
129 wsm_cmd_unlock(priv);
133 wsm_cmd_unlock(priv);
137 static int wsm_configuration_confirm(struct cw1200_common *priv,
138 struct wsm_configuration *arg,
144 status = WSM_GET32(buf);
145 if (WARN_ON(status != WSM_STATUS_SUCCESS))
148 WSM_GET(buf, arg->dot11StationId, ETH_ALEN);
149 arg->dot11FrequencyBandsSupported = WSM_GET8(buf);
151 arg->supportedRateMask = WSM_GET32(buf);
152 for (i = 0; i < 2; ++i) {
153 arg->txPowerRange[i].min_power_level = WSM_GET32(buf);
154 arg->txPowerRange[i].max_power_level = WSM_GET32(buf);
155 arg->txPowerRange[i].stepping = WSM_GET32(buf);
164 /* ******************************************************************** */
166 int wsm_reset(struct cw1200_common *priv, const struct wsm_reset *arg)
169 struct wsm_buf *buf = &priv->wsm_cmd_buf;
170 u16 cmd = WSM_RESET_REQ_ID | WSM_TX_LINK_ID(arg->link_id);
174 WSM_PUT32(buf, arg->reset_statistics ? 0 : 1);
175 ret = wsm_cmd_send(priv, buf, NULL, cmd, WSM_CMD_RESET_TIMEOUT);
176 wsm_cmd_unlock(priv);
180 wsm_cmd_unlock(priv);
184 /* ******************************************************************** */
192 int wsm_read_mib(struct cw1200_common *priv, u16 mib_id, void *_buf,
196 struct wsm_buf *buf = &priv->wsm_cmd_buf;
197 struct wsm_mib mib_buf = {
200 .buf_size = buf_size,
204 WSM_PUT16(buf, mib_id);
207 ret = wsm_cmd_send(priv, buf, &mib_buf,
208 WSM_READ_MIB_REQ_ID, WSM_CMD_TIMEOUT);
209 wsm_cmd_unlock(priv);
213 wsm_cmd_unlock(priv);
217 static int wsm_read_mib_confirm(struct cw1200_common *priv,
222 if (WARN_ON(WSM_GET32(buf) != WSM_STATUS_SUCCESS))
225 if (WARN_ON(WSM_GET16(buf) != arg->mib_id))
228 size = WSM_GET16(buf);
229 if (size > arg->buf_size)
230 size = arg->buf_size;
232 WSM_GET(buf, arg->buf, size);
233 arg->buf_size = size;
241 /* ******************************************************************** */
243 int wsm_write_mib(struct cw1200_common *priv, u16 mib_id, void *_buf,
247 struct wsm_buf *buf = &priv->wsm_cmd_buf;
248 struct wsm_mib mib_buf = {
251 .buf_size = buf_size,
256 WSM_PUT16(buf, mib_id);
257 WSM_PUT16(buf, buf_size);
258 WSM_PUT(buf, _buf, buf_size);
260 ret = wsm_cmd_send(priv, buf, &mib_buf,
261 WSM_WRITE_MIB_REQ_ID, WSM_CMD_TIMEOUT);
262 wsm_cmd_unlock(priv);
266 wsm_cmd_unlock(priv);
270 static int wsm_write_mib_confirm(struct cw1200_common *priv,
276 ret = wsm_generic_confirm(priv, arg, buf);
280 if (arg->mib_id == WSM_MIB_ID_OPERATIONAL_POWER_MODE) {
281 /* OperationalMode: update PM status. */
282 const char *p = arg->buf;
283 cw1200_enable_powersave(priv, (p[0] & 0x0F) ? true : false);
288 /* ******************************************************************** */
290 int wsm_scan(struct cw1200_common *priv, const struct wsm_scan *arg)
294 struct wsm_buf *buf = &priv->wsm_cmd_buf;
296 if (arg->num_channels > 48)
299 if (arg->num_ssids > 2)
307 WSM_PUT8(buf, arg->band);
308 WSM_PUT8(buf, arg->type);
309 WSM_PUT8(buf, arg->flags);
310 WSM_PUT8(buf, arg->max_tx_rate);
311 WSM_PUT32(buf, arg->auto_scan_interval);
312 WSM_PUT8(buf, arg->num_probes);
313 WSM_PUT8(buf, arg->num_channels);
314 WSM_PUT8(buf, arg->num_ssids);
315 WSM_PUT8(buf, arg->probe_delay);
317 for (i = 0; i < arg->num_channels; ++i) {
318 WSM_PUT16(buf, arg->ch[i].number);
320 WSM_PUT32(buf, arg->ch[i].min_chan_time);
321 WSM_PUT32(buf, arg->ch[i].max_chan_time);
325 for (i = 0; i < arg->num_ssids; ++i) {
326 WSM_PUT32(buf, arg->ssids[i].length);
327 WSM_PUT(buf, &arg->ssids[i].ssid[0],
328 sizeof(arg->ssids[i].ssid));
331 ret = wsm_cmd_send(priv, buf, NULL,
332 WSM_START_SCAN_REQ_ID, WSM_CMD_TIMEOUT);
333 wsm_cmd_unlock(priv);
337 wsm_cmd_unlock(priv);
341 /* ******************************************************************** */
343 int wsm_stop_scan(struct cw1200_common *priv)
346 struct wsm_buf *buf = &priv->wsm_cmd_buf;
348 ret = wsm_cmd_send(priv, buf, NULL,
349 WSM_STOP_SCAN_REQ_ID, WSM_CMD_TIMEOUT);
350 wsm_cmd_unlock(priv);
355 static int wsm_tx_confirm(struct cw1200_common *priv,
359 struct wsm_tx_confirm tx_confirm;
361 tx_confirm.packet_id = WSM_GET32(buf);
362 tx_confirm.status = WSM_GET32(buf);
363 tx_confirm.tx_rate = WSM_GET8(buf);
364 tx_confirm.ack_failures = WSM_GET8(buf);
365 tx_confirm.flags = WSM_GET16(buf);
366 tx_confirm.media_delay = WSM_GET32(buf);
367 tx_confirm.tx_queue_delay = WSM_GET32(buf);
369 cw1200_tx_confirm_cb(priv, link_id, &tx_confirm);
377 static int wsm_multi_tx_confirm(struct cw1200_common *priv,
378 struct wsm_buf *buf, int link_id)
383 count = WSM_GET32(buf);
384 if (WARN_ON(count <= 0))
388 /* We already released one buffer, now for the rest */
389 ret = wsm_release_tx_buffer(priv, count - 1);
393 cw1200_bh_wakeup(priv);
396 cw1200_debug_txed_multi(priv, count);
398 ret = wsm_tx_confirm(priv, buf, link_id);
399 } while (!ret && --count);
408 /* ******************************************************************** */
410 static int wsm_join_confirm(struct cw1200_common *priv,
411 struct wsm_join_cnf *arg,
414 arg->status = WSM_GET32(buf);
415 if (WARN_ON(arg->status) != WSM_STATUS_SUCCESS)
418 arg->min_power_level = WSM_GET32(buf);
419 arg->max_power_level = WSM_GET32(buf);
428 int wsm_join(struct cw1200_common *priv, struct wsm_join *arg)
431 struct wsm_buf *buf = &priv->wsm_cmd_buf;
432 struct wsm_join_cnf resp;
435 WSM_PUT8(buf, arg->mode);
436 WSM_PUT8(buf, arg->band);
437 WSM_PUT16(buf, arg->channel_number);
438 WSM_PUT(buf, &arg->bssid[0], sizeof(arg->bssid));
439 WSM_PUT16(buf, arg->atim_window);
440 WSM_PUT8(buf, arg->preamble_type);
441 WSM_PUT8(buf, arg->probe_for_join);
442 WSM_PUT8(buf, arg->dtim_period);
443 WSM_PUT8(buf, arg->flags);
444 WSM_PUT32(buf, arg->ssid_len);
445 WSM_PUT(buf, &arg->ssid[0], sizeof(arg->ssid));
446 WSM_PUT32(buf, arg->beacon_interval);
447 WSM_PUT32(buf, arg->basic_rate_set);
449 priv->tx_burst_idx = -1;
450 ret = wsm_cmd_send(priv, buf, &resp,
451 WSM_JOIN_REQ_ID, WSM_CMD_TIMEOUT);
452 /* TODO: Update state based on resp.min|max_power_level */
454 priv->join_complete_status = resp.status;
456 wsm_cmd_unlock(priv);
460 wsm_cmd_unlock(priv);
464 /* ******************************************************************** */
466 int wsm_set_bss_params(struct cw1200_common *priv,
467 const struct wsm_set_bss_params *arg)
470 struct wsm_buf *buf = &priv->wsm_cmd_buf;
474 WSM_PUT8(buf, (arg->reset_beacon_loss ? 0x1 : 0));
475 WSM_PUT8(buf, arg->beacon_lost_count);
476 WSM_PUT16(buf, arg->aid);
477 WSM_PUT32(buf, arg->operational_rate_set);
479 ret = wsm_cmd_send(priv, buf, NULL,
480 WSM_SET_BSS_PARAMS_REQ_ID, WSM_CMD_TIMEOUT);
482 wsm_cmd_unlock(priv);
486 wsm_cmd_unlock(priv);
490 /* ******************************************************************** */
492 int wsm_add_key(struct cw1200_common *priv, const struct wsm_add_key *arg)
495 struct wsm_buf *buf = &priv->wsm_cmd_buf;
499 WSM_PUT(buf, arg, sizeof(*arg));
501 ret = wsm_cmd_send(priv, buf, NULL,
502 WSM_ADD_KEY_REQ_ID, WSM_CMD_TIMEOUT);
504 wsm_cmd_unlock(priv);
508 wsm_cmd_unlock(priv);
512 /* ******************************************************************** */
514 int wsm_remove_key(struct cw1200_common *priv, const struct wsm_remove_key *arg)
517 struct wsm_buf *buf = &priv->wsm_cmd_buf;
521 WSM_PUT8(buf, arg->index);
525 ret = wsm_cmd_send(priv, buf, NULL,
526 WSM_REMOVE_KEY_REQ_ID, WSM_CMD_TIMEOUT);
528 wsm_cmd_unlock(priv);
532 wsm_cmd_unlock(priv);
536 /* ******************************************************************** */
538 int wsm_set_tx_queue_params(struct cw1200_common *priv,
539 const struct wsm_set_tx_queue_params *arg, u8 id)
542 struct wsm_buf *buf = &priv->wsm_cmd_buf;
543 u8 queue_id_to_wmm_aci[] = {3, 2, 0, 1};
547 WSM_PUT8(buf, queue_id_to_wmm_aci[id]);
549 WSM_PUT8(buf, arg->ackPolicy);
551 WSM_PUT32(buf, arg->maxTransmitLifetime);
552 WSM_PUT16(buf, arg->allowedMediumTime);
555 ret = wsm_cmd_send(priv, buf, NULL, 0x0012, WSM_CMD_TIMEOUT);
557 wsm_cmd_unlock(priv);
561 wsm_cmd_unlock(priv);
565 /* ******************************************************************** */
567 int wsm_set_edca_params(struct cw1200_common *priv,
568 const struct wsm_edca_params *arg)
571 struct wsm_buf *buf = &priv->wsm_cmd_buf;
575 /* Implemented according to specification. */
577 WSM_PUT16(buf, arg->params[3].cwmin);
578 WSM_PUT16(buf, arg->params[2].cwmin);
579 WSM_PUT16(buf, arg->params[1].cwmin);
580 WSM_PUT16(buf, arg->params[0].cwmin);
582 WSM_PUT16(buf, arg->params[3].cwmax);
583 WSM_PUT16(buf, arg->params[2].cwmax);
584 WSM_PUT16(buf, arg->params[1].cwmax);
585 WSM_PUT16(buf, arg->params[0].cwmax);
587 WSM_PUT8(buf, arg->params[3].aifns);
588 WSM_PUT8(buf, arg->params[2].aifns);
589 WSM_PUT8(buf, arg->params[1].aifns);
590 WSM_PUT8(buf, arg->params[0].aifns);
592 WSM_PUT16(buf, arg->params[3].txop_limit);
593 WSM_PUT16(buf, arg->params[2].txop_limit);
594 WSM_PUT16(buf, arg->params[1].txop_limit);
595 WSM_PUT16(buf, arg->params[0].txop_limit);
597 WSM_PUT32(buf, arg->params[3].max_rx_lifetime);
598 WSM_PUT32(buf, arg->params[2].max_rx_lifetime);
599 WSM_PUT32(buf, arg->params[1].max_rx_lifetime);
600 WSM_PUT32(buf, arg->params[0].max_rx_lifetime);
602 ret = wsm_cmd_send(priv, buf, NULL,
603 WSM_EDCA_PARAMS_REQ_ID, WSM_CMD_TIMEOUT);
604 wsm_cmd_unlock(priv);
608 wsm_cmd_unlock(priv);
612 /* ******************************************************************** */
614 int wsm_switch_channel(struct cw1200_common *priv,
615 const struct wsm_switch_channel *arg)
618 struct wsm_buf *buf = &priv->wsm_cmd_buf;
622 WSM_PUT8(buf, arg->mode);
623 WSM_PUT8(buf, arg->switch_count);
624 WSM_PUT16(buf, arg->channel_number);
626 priv->channel_switch_in_progress = 1;
628 ret = wsm_cmd_send(priv, buf, NULL,
629 WSM_SWITCH_CHANNEL_REQ_ID, WSM_CMD_TIMEOUT);
631 priv->channel_switch_in_progress = 0;
633 wsm_cmd_unlock(priv);
637 wsm_cmd_unlock(priv);
641 /* ******************************************************************** */
643 int wsm_set_pm(struct cw1200_common *priv, const struct wsm_set_pm *arg)
646 struct wsm_buf *buf = &priv->wsm_cmd_buf;
647 priv->ps_mode_switch_in_progress = 1;
651 WSM_PUT8(buf, arg->mode);
652 WSM_PUT8(buf, arg->fast_psm_idle_period);
653 WSM_PUT8(buf, arg->ap_psm_change_period);
654 WSM_PUT8(buf, arg->min_auto_pspoll_period);
656 ret = wsm_cmd_send(priv, buf, NULL,
657 WSM_SET_PM_REQ_ID, WSM_CMD_TIMEOUT);
659 wsm_cmd_unlock(priv);
663 wsm_cmd_unlock(priv);
667 /* ******************************************************************** */
669 int wsm_start(struct cw1200_common *priv, const struct wsm_start *arg)
672 struct wsm_buf *buf = &priv->wsm_cmd_buf;
676 WSM_PUT8(buf, arg->mode);
677 WSM_PUT8(buf, arg->band);
678 WSM_PUT16(buf, arg->channel_number);
679 WSM_PUT32(buf, arg->ct_window);
680 WSM_PUT32(buf, arg->beacon_interval);
681 WSM_PUT8(buf, arg->dtim_period);
682 WSM_PUT8(buf, arg->preamble);
683 WSM_PUT8(buf, arg->probe_delay);
684 WSM_PUT8(buf, arg->ssid_len);
685 WSM_PUT(buf, arg->ssid, sizeof(arg->ssid));
686 WSM_PUT32(buf, arg->basic_rate_set);
688 priv->tx_burst_idx = -1;
689 ret = wsm_cmd_send(priv, buf, NULL,
690 WSM_START_REQ_ID, WSM_CMD_START_TIMEOUT);
692 wsm_cmd_unlock(priv);
696 wsm_cmd_unlock(priv);
700 /* ******************************************************************** */
702 int wsm_beacon_transmit(struct cw1200_common *priv,
703 const struct wsm_beacon_transmit *arg)
706 struct wsm_buf *buf = &priv->wsm_cmd_buf;
710 WSM_PUT32(buf, arg->enable_beaconing ? 1 : 0);
712 ret = wsm_cmd_send(priv, buf, NULL,
713 WSM_BEACON_TRANSMIT_REQ_ID, WSM_CMD_TIMEOUT);
715 wsm_cmd_unlock(priv);
719 wsm_cmd_unlock(priv);
723 /* ******************************************************************** */
725 int wsm_start_find(struct cw1200_common *priv)
728 struct wsm_buf *buf = &priv->wsm_cmd_buf;
731 ret = wsm_cmd_send(priv, buf, NULL, 0x0019, WSM_CMD_TIMEOUT);
732 wsm_cmd_unlock(priv);
736 /* ******************************************************************** */
738 int wsm_stop_find(struct cw1200_common *priv)
741 struct wsm_buf *buf = &priv->wsm_cmd_buf;
744 ret = wsm_cmd_send(priv, buf, NULL, 0x001A, WSM_CMD_TIMEOUT);
745 wsm_cmd_unlock(priv);
749 /* ******************************************************************** */
751 int wsm_map_link(struct cw1200_common *priv, const struct wsm_map_link *arg)
754 struct wsm_buf *buf = &priv->wsm_cmd_buf;
755 u16 cmd = 0x001C | WSM_TX_LINK_ID(arg->link_id);
759 WSM_PUT(buf, &arg->mac_addr[0], sizeof(arg->mac_addr));
762 ret = wsm_cmd_send(priv, buf, NULL, cmd, WSM_CMD_TIMEOUT);
764 wsm_cmd_unlock(priv);
768 wsm_cmd_unlock(priv);
772 /* ******************************************************************** */
774 int wsm_update_ie(struct cw1200_common *priv,
775 const struct wsm_update_ie *arg)
778 struct wsm_buf *buf = &priv->wsm_cmd_buf;
782 WSM_PUT16(buf, arg->what);
783 WSM_PUT16(buf, arg->count);
784 WSM_PUT(buf, arg->ies, arg->length);
786 ret = wsm_cmd_send(priv, buf, NULL, 0x001B, WSM_CMD_TIMEOUT);
788 wsm_cmd_unlock(priv);
792 wsm_cmd_unlock(priv);
796 /* ******************************************************************** */
797 int wsm_set_probe_responder(struct cw1200_common *priv, bool enable)
799 priv->rx_filter.probeResponder = enable;
800 return wsm_set_rx_filter(priv, &priv->rx_filter);
803 /* ******************************************************************** */
804 /* WSM indication events implementation */
805 const char * const cw1200_fw_types[] = {
813 static int wsm_startup_indication(struct cw1200_common *priv,
816 priv->wsm_caps.input_buffers = WSM_GET16(buf);
817 priv->wsm_caps.input_buffer_size = WSM_GET16(buf);
818 priv->wsm_caps.hw_id = WSM_GET16(buf);
819 priv->wsm_caps.hw_subid = WSM_GET16(buf);
820 priv->wsm_caps.status = WSM_GET16(buf);
821 priv->wsm_caps.fw_cap = WSM_GET16(buf);
822 priv->wsm_caps.fw_type = WSM_GET16(buf);
823 priv->wsm_caps.fw_api = WSM_GET16(buf);
824 priv->wsm_caps.fw_build = WSM_GET16(buf);
825 priv->wsm_caps.fw_ver = WSM_GET16(buf);
826 WSM_GET(buf, priv->wsm_caps.fw_label, sizeof(priv->wsm_caps.fw_label));
827 priv->wsm_caps.fw_label[sizeof(priv->wsm_caps.fw_label) - 1] = 0; /* Do not trust FW too much... */
829 if (WARN_ON(priv->wsm_caps.status))
832 if (WARN_ON(priv->wsm_caps.fw_type > 4))
835 pr_info("CW1200 WSM init done.\n"
836 " Input buffers: %d x %d bytes\n"
838 " %s firmware [%s], ver: %d, build: %d,"
839 " api: %d, cap: 0x%.4X\n",
840 priv->wsm_caps.input_buffers,
841 priv->wsm_caps.input_buffer_size,
842 priv->wsm_caps.hw_id, priv->wsm_caps.hw_subid,
843 cw1200_fw_types[priv->wsm_caps.fw_type],
844 priv->wsm_caps.fw_label, priv->wsm_caps.fw_ver,
845 priv->wsm_caps.fw_build,
846 priv->wsm_caps.fw_api, priv->wsm_caps.fw_cap);
848 /* Disable unsupported frequency bands */
849 if (!(priv->wsm_caps.fw_cap & 0x1))
850 priv->hw->wiphy->bands[NL80211_BAND_2GHZ] = NULL;
851 if (!(priv->wsm_caps.fw_cap & 0x2))
852 priv->hw->wiphy->bands[NL80211_BAND_5GHZ] = NULL;
854 priv->firmware_ready = 1;
855 wake_up(&priv->wsm_startup_done);
863 static int wsm_receive_indication(struct cw1200_common *priv,
866 struct sk_buff **skb_p)
869 struct ieee80211_hdr *hdr;
873 rx.status = WSM_GET32(buf);
874 rx.channel_number = WSM_GET16(buf);
875 rx.rx_rate = WSM_GET8(buf);
876 rx.rcpi_rssi = WSM_GET8(buf);
877 rx.flags = WSM_GET32(buf);
879 /* FW Workaround: Drop probe resp or
880 beacon when RSSI is 0
882 hdr = (struct ieee80211_hdr *)(*skb_p)->data;
885 (ieee80211_is_probe_resp(hdr->frame_control) ||
886 ieee80211_is_beacon(hdr->frame_control)))
889 /* If no RSSI subscription has been made,
890 * convert RCPI to RSSI here
892 if (!priv->cqm_use_rssi)
893 rx.rcpi_rssi = rx.rcpi_rssi / 2 - 110;
895 fctl = *(__le16 *)buf->data;
896 hdr_len = buf->data - buf->begin;
897 skb_pull(*skb_p, hdr_len);
898 if (!rx.status && ieee80211_is_deauth(fctl)) {
899 if (priv->join_status == CW1200_JOIN_STATUS_STA) {
900 /* Shedule unjoin work */
901 pr_debug("[WSM] Issue unjoin command (RX).\n");
902 wsm_lock_tx_async(priv);
903 if (queue_work(priv->workqueue,
904 &priv->unjoin_work) <= 0)
908 cw1200_rx_cb(priv, &rx, link_id, skb_p);
910 skb_push(*skb_p, hdr_len);
918 static int wsm_event_indication(struct cw1200_common *priv, struct wsm_buf *buf)
921 struct cw1200_wsm_event *event;
923 if (priv->mode == NL80211_IFTYPE_UNSPECIFIED) {
924 /* STA is stopped. */
928 event = kzalloc(sizeof(struct cw1200_wsm_event), GFP_KERNEL);
932 event->evt.id = WSM_GET32(buf);
933 event->evt.data = WSM_GET32(buf);
935 pr_debug("[WSM] Event: %d(%d)\n",
936 event->evt.id, event->evt.data);
938 spin_lock(&priv->event_queue_lock);
939 first = list_empty(&priv->event_queue);
940 list_add_tail(&event->link, &priv->event_queue);
941 spin_unlock(&priv->event_queue_lock);
944 queue_work(priv->workqueue, &priv->event_handler);
953 static int wsm_channel_switch_indication(struct cw1200_common *priv,
956 WARN_ON(WSM_GET32(buf));
958 priv->channel_switch_in_progress = 0;
959 wake_up(&priv->channel_switch_done);
969 static int wsm_set_pm_indication(struct cw1200_common *priv,
972 /* TODO: Check buf (struct wsm_set_pm_complete) for validity */
973 if (priv->ps_mode_switch_in_progress) {
974 priv->ps_mode_switch_in_progress = 0;
975 wake_up(&priv->ps_mode_switch_done);
980 static int wsm_scan_started(struct cw1200_common *priv, void *arg,
983 u32 status = WSM_GET32(buf);
984 if (status != WSM_STATUS_SUCCESS) {
985 cw1200_scan_failed_cb(priv);
995 static int wsm_scan_complete_indication(struct cw1200_common *priv,
998 struct wsm_scan_complete arg;
999 arg.status = WSM_GET32(buf);
1000 arg.psm = WSM_GET8(buf);
1001 arg.num_channels = WSM_GET8(buf);
1002 cw1200_scan_complete_cb(priv, &arg);
1010 static int wsm_join_complete_indication(struct cw1200_common *priv,
1011 struct wsm_buf *buf)
1013 struct wsm_join_complete arg;
1014 arg.status = WSM_GET32(buf);
1015 pr_debug("[WSM] Join complete indication, status: %d\n", arg.status);
1016 cw1200_join_complete_cb(priv, &arg);
1024 static int wsm_find_complete_indication(struct cw1200_common *priv,
1025 struct wsm_buf *buf)
1027 pr_warn("Implement find_complete_indication\n");
1031 static int wsm_ba_timeout_indication(struct cw1200_common *priv,
1032 struct wsm_buf *buf)
1039 dummy = WSM_GET32(buf);
1040 tid = WSM_GET8(buf);
1041 dummy2 = WSM_GET8(buf);
1042 WSM_GET(buf, addr, ETH_ALEN);
1044 pr_info("BlockACK timeout, tid %d, addr %pM\n",
1053 static int wsm_suspend_resume_indication(struct cw1200_common *priv,
1054 int link_id, struct wsm_buf *buf)
1057 struct wsm_suspend_resume arg;
1059 flags = WSM_GET32(buf);
1060 arg.link_id = link_id;
1061 arg.stop = !(flags & 1);
1062 arg.multicast = !!(flags & 8);
1063 arg.queue = (flags >> 1) & 3;
1065 cw1200_suspend_resume(priv, &arg);
1074 /* ******************************************************************** */
1077 static int wsm_cmd_send(struct cw1200_common *priv,
1078 struct wsm_buf *buf,
1079 void *arg, u16 cmd, long tmo)
1081 size_t buf_len = buf->data - buf->begin;
1084 /* Don't bother if we're dead. */
1085 if (priv->bh_error) {
1090 /* Block until the cmd buffer is completed. Tortuous. */
1091 spin_lock(&priv->wsm_cmd.lock);
1092 while (!priv->wsm_cmd.done) {
1093 spin_unlock(&priv->wsm_cmd.lock);
1094 spin_lock(&priv->wsm_cmd.lock);
1096 priv->wsm_cmd.done = 0;
1097 spin_unlock(&priv->wsm_cmd.lock);
1099 if (cmd == WSM_WRITE_MIB_REQ_ID ||
1100 cmd == WSM_READ_MIB_REQ_ID)
1101 pr_debug("[WSM] >>> 0x%.4X [MIB: 0x%.4X] (%zu)\n",
1102 cmd, __le16_to_cpu(((__le16 *)buf->begin)[2]),
1105 pr_debug("[WSM] >>> 0x%.4X (%zu)\n", cmd, buf_len);
1107 /* Due to buggy SPI on CW1200, we need to
1108 * pad the message by a few bytes to ensure
1109 * that it's completely received.
1113 /* Fill HI message header */
1114 /* BH will add sequence number */
1115 ((__le16 *)buf->begin)[0] = __cpu_to_le16(buf_len);
1116 ((__le16 *)buf->begin)[1] = __cpu_to_le16(cmd);
1118 spin_lock(&priv->wsm_cmd.lock);
1119 BUG_ON(priv->wsm_cmd.ptr);
1120 priv->wsm_cmd.ptr = buf->begin;
1121 priv->wsm_cmd.len = buf_len;
1122 priv->wsm_cmd.arg = arg;
1123 priv->wsm_cmd.cmd = cmd;
1124 spin_unlock(&priv->wsm_cmd.lock);
1126 cw1200_bh_wakeup(priv);
1128 /* Wait for command completion */
1129 ret = wait_event_timeout(priv->wsm_cmd_wq,
1130 priv->wsm_cmd.done, tmo);
1132 if (!ret && !priv->wsm_cmd.done) {
1133 spin_lock(&priv->wsm_cmd.lock);
1134 priv->wsm_cmd.done = 1;
1135 priv->wsm_cmd.ptr = NULL;
1136 spin_unlock(&priv->wsm_cmd.lock);
1137 if (priv->bh_error) {
1138 /* Return ok to help system cleanup */
1141 pr_err("CMD req (0x%04x) stuck in firmware, killing BH\n", priv->wsm_cmd.cmd);
1142 print_hex_dump_bytes("REQDUMP: ", DUMP_PREFIX_NONE,
1143 buf->begin, buf_len);
1144 pr_err("Outstanding outgoing frames: %d\n", priv->hw_bufs_used);
1146 /* Kill BH thread to report the error to the top layer. */
1147 atomic_add(1, &priv->bh_term);
1148 wake_up(&priv->bh_wq);
1152 spin_lock(&priv->wsm_cmd.lock);
1153 BUG_ON(!priv->wsm_cmd.done);
1154 ret = priv->wsm_cmd.ret;
1155 spin_unlock(&priv->wsm_cmd.lock);
1162 /* ******************************************************************** */
1163 /* WSM TX port control */
1165 void wsm_lock_tx(struct cw1200_common *priv)
1168 if (atomic_add_return(1, &priv->tx_lock) == 1) {
1169 if (wsm_flush_tx(priv))
1170 pr_debug("[WSM] TX is locked.\n");
1172 wsm_cmd_unlock(priv);
1175 void wsm_lock_tx_async(struct cw1200_common *priv)
1177 if (atomic_add_return(1, &priv->tx_lock) == 1)
1178 pr_debug("[WSM] TX is locked (async).\n");
1181 bool wsm_flush_tx(struct cw1200_common *priv)
1183 unsigned long timestamp = jiffies;
1184 bool pending = false;
1188 /* Flush must be called with TX lock held. */
1189 BUG_ON(!atomic_read(&priv->tx_lock));
1191 /* First check if we really need to do something.
1192 * It is safe to use unprotected access, as hw_bufs_used
1193 * can only decrements.
1195 if (!priv->hw_bufs_used)
1198 if (priv->bh_error) {
1199 /* In case of failure do not wait for magic. */
1200 pr_err("[WSM] Fatal error occurred, will not flush TX.\n");
1203 /* Get a timestamp of "oldest" frame */
1204 for (i = 0; i < 4; ++i)
1205 pending |= cw1200_queue_get_xmit_timestamp(
1207 ×tamp, 0xffffffff);
1208 /* If there's nothing pending, we're good */
1212 timeout = timestamp + WSM_CMD_LAST_CHANCE_TIMEOUT - jiffies;
1213 if (timeout < 0 || wait_event_timeout(priv->bh_evt_wq,
1214 !priv->hw_bufs_used,
1216 /* Hmmm... Not good. Frame had stuck in firmware. */
1218 wiphy_err(priv->hw->wiphy, "[WSM] TX Frames (%d) stuck in firmware, killing BH\n", priv->hw_bufs_used);
1219 wake_up(&priv->bh_wq);
1223 /* Ok, everything is flushed. */
1228 void wsm_unlock_tx(struct cw1200_common *priv)
1231 tx_lock = atomic_sub_return(1, &priv->tx_lock);
1232 BUG_ON(tx_lock < 0);
1235 if (!priv->bh_error)
1236 cw1200_bh_wakeup(priv);
1237 pr_debug("[WSM] TX is unlocked.\n");
1241 /* ******************************************************************** */
1244 int wsm_handle_exception(struct cw1200_common *priv, u8 *data, size_t len)
1252 static const char * const reason_str[] = {
1253 "undefined instruction",
1259 buf.begin = buf.data = data;
1260 buf.end = &buf.begin[len];
1262 reason = WSM_GET32(&buf);
1263 for (i = 0; i < ARRAY_SIZE(reg); ++i)
1264 reg[i] = WSM_GET32(&buf);
1265 WSM_GET(&buf, fname, sizeof(fname));
1268 wiphy_err(priv->hw->wiphy,
1269 "Firmware exception: %s.\n",
1270 reason_str[reason]);
1272 wiphy_err(priv->hw->wiphy,
1273 "Firmware assert at %.*s, line %d\n",
1274 (int) sizeof(fname), fname, reg[1]);
1276 for (i = 0; i < 12; i += 4)
1277 wiphy_err(priv->hw->wiphy,
1278 "R%d: 0x%.8X, R%d: 0x%.8X, R%d: 0x%.8X, R%d: 0x%.8X,\n",
1279 i + 0, reg[i + 0], i + 1, reg[i + 1],
1280 i + 2, reg[i + 2], i + 3, reg[i + 3]);
1281 wiphy_err(priv->hw->wiphy,
1282 "R12: 0x%.8X, SP: 0x%.8X, LR: 0x%.8X, PC: 0x%.8X,\n",
1283 reg[i + 0], reg[i + 1], reg[i + 2], reg[i + 3]);
1285 wiphy_err(priv->hw->wiphy,
1286 "CPSR: 0x%.8X, SPSR: 0x%.8X\n",
1287 reg[i + 0], reg[i + 1]);
1289 print_hex_dump_bytes("R1: ", DUMP_PREFIX_NONE,
1290 fname, sizeof(fname));
1294 wiphy_err(priv->hw->wiphy, "Firmware exception.\n");
1295 print_hex_dump_bytes("Exception: ", DUMP_PREFIX_NONE,
1300 int wsm_handle_rx(struct cw1200_common *priv, u16 id,
1301 struct wsm_hdr *wsm, struct sk_buff **skb_p)
1304 struct wsm_buf wsm_buf;
1305 int link_id = (id >> 6) & 0x0F;
1307 /* Strip link id. */
1308 id &= ~WSM_TX_LINK_ID(WSM_TX_LINK_ID_MAX);
1310 wsm_buf.begin = (u8 *)&wsm[0];
1311 wsm_buf.data = (u8 *)&wsm[1];
1312 wsm_buf.end = &wsm_buf.begin[__le16_to_cpu(wsm->len)];
1314 pr_debug("[WSM] <<< 0x%.4X (%td)\n", id,
1315 wsm_buf.end - wsm_buf.begin);
1317 if (id == WSM_TX_CONFIRM_IND_ID) {
1318 ret = wsm_tx_confirm(priv, &wsm_buf, link_id);
1319 } else if (id == WSM_MULTI_TX_CONFIRM_ID) {
1320 ret = wsm_multi_tx_confirm(priv, &wsm_buf, link_id);
1321 } else if (id & 0x0400) {
1325 /* Do not trust FW too much. Protection against repeated
1326 * response and race condition removal (see above).
1328 spin_lock(&priv->wsm_cmd.lock);
1329 wsm_arg = priv->wsm_cmd.arg;
1330 wsm_cmd = priv->wsm_cmd.cmd &
1331 ~WSM_TX_LINK_ID(WSM_TX_LINK_ID_MAX);
1332 priv->wsm_cmd.cmd = 0xFFFF;
1333 spin_unlock(&priv->wsm_cmd.lock);
1335 if (WARN_ON((id & ~0x0400) != wsm_cmd)) {
1336 /* Note that any non-zero is a fatal retcode. */
1341 /* Note that wsm_arg can be NULL in case of timeout in
1346 case WSM_READ_MIB_RESP_ID:
1348 ret = wsm_read_mib_confirm(priv, wsm_arg,
1351 case WSM_WRITE_MIB_RESP_ID:
1353 ret = wsm_write_mib_confirm(priv, wsm_arg,
1356 case WSM_START_SCAN_RESP_ID:
1358 ret = wsm_scan_started(priv, wsm_arg, &wsm_buf);
1360 case WSM_CONFIGURATION_RESP_ID:
1362 ret = wsm_configuration_confirm(priv, wsm_arg,
1365 case WSM_JOIN_RESP_ID:
1367 ret = wsm_join_confirm(priv, wsm_arg, &wsm_buf);
1369 case WSM_STOP_SCAN_RESP_ID:
1370 case WSM_RESET_RESP_ID:
1371 case WSM_ADD_KEY_RESP_ID:
1372 case WSM_REMOVE_KEY_RESP_ID:
1373 case WSM_SET_PM_RESP_ID:
1374 case WSM_SET_BSS_PARAMS_RESP_ID:
1375 case 0x0412: /* set_tx_queue_params */
1376 case WSM_EDCA_PARAMS_RESP_ID:
1377 case WSM_SWITCH_CHANNEL_RESP_ID:
1378 case WSM_START_RESP_ID:
1379 case WSM_BEACON_TRANSMIT_RESP_ID:
1380 case 0x0419: /* start_find */
1381 case 0x041A: /* stop_find */
1382 case 0x041B: /* update_ie */
1383 case 0x041C: /* map_link */
1384 WARN_ON(wsm_arg != NULL);
1385 ret = wsm_generic_confirm(priv, wsm_arg, &wsm_buf);
1387 wiphy_warn(priv->hw->wiphy,
1388 "wsm_generic_confirm failed for request 0x%04x.\n",
1391 /* often 0x407 and 0x410 occur, this means we're dead.. */
1392 if (priv->join_status >= CW1200_JOIN_STATUS_JOINING) {
1394 if (queue_work(priv->workqueue, &priv->unjoin_work) <= 0)
1395 wsm_unlock_tx(priv);
1400 wiphy_warn(priv->hw->wiphy,
1401 "Unrecognized confirmation 0x%04x\n",
1405 spin_lock(&priv->wsm_cmd.lock);
1406 priv->wsm_cmd.ret = ret;
1407 priv->wsm_cmd.done = 1;
1408 spin_unlock(&priv->wsm_cmd.lock);
1410 ret = 0; /* Error response from device should ne stop BH. */
1412 wake_up(&priv->wsm_cmd_wq);
1413 } else if (id & 0x0800) {
1415 case WSM_STARTUP_IND_ID:
1416 ret = wsm_startup_indication(priv, &wsm_buf);
1418 case WSM_RECEIVE_IND_ID:
1419 ret = wsm_receive_indication(priv, link_id,
1423 ret = wsm_event_indication(priv, &wsm_buf);
1425 case WSM_SCAN_COMPLETE_IND_ID:
1426 ret = wsm_scan_complete_indication(priv, &wsm_buf);
1429 ret = wsm_ba_timeout_indication(priv, &wsm_buf);
1432 ret = wsm_set_pm_indication(priv, &wsm_buf);
1435 ret = wsm_channel_switch_indication(priv, &wsm_buf);
1438 ret = wsm_find_complete_indication(priv, &wsm_buf);
1441 ret = wsm_suspend_resume_indication(priv,
1445 ret = wsm_join_complete_indication(priv, &wsm_buf);
1448 pr_warn("Unrecognised WSM ID %04x\n", id);
1458 static bool wsm_handle_tx_data(struct cw1200_common *priv,
1460 const struct ieee80211_tx_info *tx_info,
1461 const struct cw1200_txpriv *txpriv,
1462 struct cw1200_queue *queue)
1464 bool handled = false;
1465 const struct ieee80211_hdr *frame =
1466 (struct ieee80211_hdr *)&((u8 *)wsm)[txpriv->offset];
1467 __le16 fctl = frame->frame_control;
1475 switch (priv->mode) {
1476 case NL80211_IFTYPE_STATION:
1477 if (priv->join_status == CW1200_JOIN_STATUS_MONITOR)
1479 else if (priv->join_status < CW1200_JOIN_STATUS_PRE_STA)
1482 case NL80211_IFTYPE_AP:
1483 if (!priv->join_status) {
1485 } else if (!(BIT(txpriv->raw_link_id) &
1486 (BIT(0) | priv->link_id_map))) {
1487 wiphy_warn(priv->hw->wiphy,
1488 "A frame with expired link id is dropped.\n");
1491 if (cw1200_queue_get_generation(wsm->packet_id) >
1492 CW1200_MAX_REQUEUE_ATTEMPTS) {
1493 /* HACK!!! WSM324 firmware has tendency to requeue
1494 * multicast frames in a loop, causing performance
1495 * drop and high power consumption of the driver.
1496 * In this situation it is better just to drop
1497 * the problematic frame.
1499 wiphy_warn(priv->hw->wiphy,
1500 "Too many attempts to requeue a frame; dropped.\n");
1504 case NL80211_IFTYPE_ADHOC:
1505 if (priv->join_status != CW1200_JOIN_STATUS_IBSS)
1508 case NL80211_IFTYPE_MESH_POINT:
1509 action = do_tx; /* TODO: Test me! */
1511 case NL80211_IFTYPE_MONITOR:
1517 if (action == do_tx) {
1518 if (ieee80211_is_nullfunc(fctl)) {
1519 spin_lock(&priv->bss_loss_lock);
1520 if (priv->bss_loss_state) {
1521 priv->bss_loss_confirm_id = wsm->packet_id;
1522 wsm->queue_id = WSM_QUEUE_VOICE;
1524 spin_unlock(&priv->bss_loss_lock);
1525 } else if (ieee80211_is_probe_req(fctl)) {
1527 } else if (ieee80211_is_deauth(fctl) &&
1528 priv->mode != NL80211_IFTYPE_AP) {
1529 pr_debug("[WSM] Issue unjoin command due to tx deauth.\n");
1530 wsm_lock_tx_async(priv);
1531 if (queue_work(priv->workqueue,
1532 &priv->unjoin_work) <= 0)
1533 wsm_unlock_tx(priv);
1534 } else if (ieee80211_has_protected(fctl) &&
1535 tx_info->control.hw_key &&
1536 tx_info->control.hw_key->keyidx != priv->wep_default_key_id &&
1537 (tx_info->control.hw_key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
1538 tx_info->control.hw_key->cipher == WLAN_CIPHER_SUITE_WEP104)) {
1545 /* An interesting FW "feature". Device filters probe responses.
1546 * The easiest way to get it back is to convert
1547 * probe request into WSM start_scan command.
1549 pr_debug("[WSM] Convert probe request to scan.\n");
1550 wsm_lock_tx_async(priv);
1551 priv->pending_frame_id = wsm->packet_id;
1552 if (queue_delayed_work(priv->workqueue,
1553 &priv->scan.probe_work, 0) <= 0)
1554 wsm_unlock_tx(priv);
1558 pr_debug("[WSM] Drop frame (0x%.4X).\n", fctl);
1559 BUG_ON(cw1200_queue_remove(queue, wsm->packet_id));
1563 pr_debug("[WSM] Issue set_default_wep_key.\n");
1564 wsm_lock_tx_async(priv);
1565 priv->wep_default_key_id = tx_info->control.hw_key->keyidx;
1566 priv->pending_frame_id = wsm->packet_id;
1567 if (queue_work(priv->workqueue, &priv->wep_key_work) <= 0)
1568 wsm_unlock_tx(priv);
1572 pr_debug("[WSM] Transmit frame.\n");
1581 static int cw1200_get_prio_queue(struct cw1200_common *priv,
1582 u32 link_id_map, int *total)
1584 static const int urgent = BIT(CW1200_LINK_ID_AFTER_DTIM) |
1585 BIT(CW1200_LINK_ID_UAPSD);
1586 struct wsm_edca_queue_params *edca;
1587 unsigned score, best = -1;
1592 /* search for a winner using edca params */
1593 for (i = 0; i < 4; ++i) {
1594 queued = cw1200_queue_get_num_queued(&priv->tx_queue[i],
1599 edca = &priv->edca.params[i];
1600 score = ((edca->aifns + edca->cwmin) << 16) +
1601 ((edca->cwmax - edca->cwmin) *
1602 (get_random_int() & 0xFFFF));
1603 if (score < best && (winner < 0 || i != 3)) {
1609 /* override winner if bursting */
1610 if (winner >= 0 && priv->tx_burst_idx >= 0 &&
1611 winner != priv->tx_burst_idx &&
1612 !cw1200_queue_get_num_queued(
1613 &priv->tx_queue[winner],
1614 link_id_map & urgent) &&
1615 cw1200_queue_get_num_queued(
1616 &priv->tx_queue[priv->tx_burst_idx],
1618 winner = priv->tx_burst_idx;
1623 static int wsm_get_tx_queue_and_mask(struct cw1200_common *priv,
1624 struct cw1200_queue **queue_p,
1625 u32 *tx_allowed_mask_p,
1629 u32 tx_allowed_mask;
1632 /* Search for a queue with multicast frames buffered */
1633 if (priv->tx_multicast) {
1634 tx_allowed_mask = BIT(CW1200_LINK_ID_AFTER_DTIM);
1635 idx = cw1200_get_prio_queue(priv,
1636 tx_allowed_mask, &total);
1643 /* Search for unicast traffic */
1644 tx_allowed_mask = ~priv->sta_asleep_mask;
1645 tx_allowed_mask |= BIT(CW1200_LINK_ID_UAPSD);
1646 if (priv->sta_asleep_mask) {
1647 tx_allowed_mask |= priv->pspoll_mask;
1648 tx_allowed_mask &= ~BIT(CW1200_LINK_ID_AFTER_DTIM);
1650 tx_allowed_mask |= BIT(CW1200_LINK_ID_AFTER_DTIM);
1652 idx = cw1200_get_prio_queue(priv,
1653 tx_allowed_mask, &total);
1658 *queue_p = &priv->tx_queue[idx];
1659 *tx_allowed_mask_p = tx_allowed_mask;
1663 int wsm_get_tx(struct cw1200_common *priv, u8 **data,
1664 size_t *tx_len, int *burst)
1666 struct wsm_tx *wsm = NULL;
1667 struct ieee80211_tx_info *tx_info;
1668 struct cw1200_queue *queue = NULL;
1670 u32 tx_allowed_mask = 0;
1671 const struct cw1200_txpriv *txpriv = NULL;
1674 /* More is used only for broadcasts. */
1677 if (priv->wsm_cmd.ptr) { /* CMD request */
1679 spin_lock(&priv->wsm_cmd.lock);
1680 BUG_ON(!priv->wsm_cmd.ptr);
1681 *data = priv->wsm_cmd.ptr;
1682 *tx_len = priv->wsm_cmd.len;
1684 spin_unlock(&priv->wsm_cmd.lock);
1689 if (atomic_add_return(0, &priv->tx_lock))
1692 spin_lock_bh(&priv->ps_state_lock);
1694 ret = wsm_get_tx_queue_and_mask(priv, &queue,
1695 &tx_allowed_mask, &more);
1696 queue_num = queue - priv->tx_queue;
1698 if (priv->buffered_multicasts &&
1700 (priv->tx_multicast || !priv->sta_asleep_mask)) {
1701 priv->buffered_multicasts = false;
1702 if (priv->tx_multicast) {
1703 priv->tx_multicast = false;
1704 queue_work(priv->workqueue,
1705 &priv->multicast_stop_work);
1709 spin_unlock_bh(&priv->ps_state_lock);
1714 if (cw1200_queue_get(queue,
1716 &wsm, &tx_info, &txpriv))
1719 if (wsm_handle_tx_data(priv, wsm,
1720 tx_info, txpriv, queue))
1721 continue; /* Handled by WSM */
1723 wsm->hdr.id &= __cpu_to_le16(
1724 ~WSM_TX_LINK_ID(WSM_TX_LINK_ID_MAX));
1725 wsm->hdr.id |= cpu_to_le16(
1726 WSM_TX_LINK_ID(txpriv->raw_link_id));
1727 priv->pspoll_mask &= ~BIT(txpriv->raw_link_id);
1730 *tx_len = __le16_to_cpu(wsm->hdr.len);
1732 /* allow bursting if txop is set */
1733 if (priv->edca.params[queue_num].txop_limit)
1734 *burst = min(*burst,
1735 (int)cw1200_queue_get_num_queued(queue, tx_allowed_mask) + 1);
1739 /* store index of bursting queue */
1741 priv->tx_burst_idx = queue_num;
1743 priv->tx_burst_idx = -1;
1746 struct ieee80211_hdr *hdr =
1747 (struct ieee80211_hdr *)
1748 &((u8 *)wsm)[txpriv->offset];
1749 /* more buffered multicast/broadcast frames
1750 * ==> set MoreData flag in IEEE 802.11 header
1753 hdr->frame_control |=
1754 cpu_to_le16(IEEE80211_FCTL_MOREDATA);
1757 pr_debug("[WSM] >>> 0x%.4X (%zu) %p %c\n",
1758 0x0004, *tx_len, *data,
1759 wsm->more ? 'M' : ' ');
1768 void wsm_txed(struct cw1200_common *priv, u8 *data)
1770 if (data == priv->wsm_cmd.ptr) {
1771 spin_lock(&priv->wsm_cmd.lock);
1772 priv->wsm_cmd.ptr = NULL;
1773 spin_unlock(&priv->wsm_cmd.lock);
1777 /* ******************************************************************** */
1780 void wsm_buf_init(struct wsm_buf *buf)
1783 buf->begin = kmalloc(FWLOAD_BLOCK_SIZE, GFP_KERNEL | GFP_DMA);
1784 buf->end = buf->begin ? &buf->begin[FWLOAD_BLOCK_SIZE] : buf->begin;
1788 void wsm_buf_deinit(struct wsm_buf *buf)
1791 buf->begin = buf->data = buf->end = NULL;
1794 static void wsm_buf_reset(struct wsm_buf *buf)
1797 buf->data = &buf->begin[4];
1798 *(u32 *)buf->begin = 0;
1800 buf->data = buf->begin;
1804 static int wsm_buf_reserve(struct wsm_buf *buf, size_t extra_size)
1806 size_t pos = buf->data - buf->begin;
1807 size_t size = pos + extra_size;
1810 size = round_up(size, FWLOAD_BLOCK_SIZE);
1812 tmp = krealloc(buf->begin, size, GFP_KERNEL | GFP_DMA);
1814 wsm_buf_deinit(buf);
1819 buf->data = &buf->begin[pos];
1820 buf->end = &buf->begin[size];