2 * Intel Wireless Multicomm 3200 WiFi driver
4 * Copyright (C) 2009 Intel Corporation. All rights reserved.
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
10 * * Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * * Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
16 * * Neither the name of Intel Corporation nor the names of its
17 * contributors may be used to endorse or promote products derived
18 * from this software without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
23 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
24 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
25 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
26 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
27 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
28 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
29 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
30 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 * Intel Corporation <ilw@linux.intel.com>
34 * Samuel Ortiz <samuel.ortiz@intel.com>
35 * Zhu Yi <yi.zhu@intel.com>
39 #include <linux/kernel.h>
40 #include <linux/netdevice.h>
41 #include <linux/sched.h>
42 #include <linux/etherdevice.h>
43 #include <linux/wireless.h>
44 #include <linux/ieee80211.h>
45 #include <linux/if_arp.h>
46 #include <linux/list.h>
47 #include <net/iw_handler.h>
59 static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr *hdr)
61 if ((le32_to_cpu(hdr->cmd) == UMAC_PAD_TERMINAL) ||
62 (le32_to_cpu(hdr->size) == UMAC_PAD_TERMINAL))
68 static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr *hdr)
70 return ALIGN(le32_to_cpu(hdr->size) + sizeof(struct iwm_udma_in_hdr),
75 * Notification handlers:
77 * For every possible notification we can receive from the
78 * target, we have a handler.
79 * When we get a target notification, and there is no one
80 * waiting for it, it's just processed through the rx code
84 * -> iwm_rx_handle_umac()
85 * -> iwm_rx_handle_wifi()
86 * -> iwm_rx_handle_resp()
91 * -> iwm_rx_handle_non_wifi()
93 * If there are processes waiting for this notification, then
94 * iwm_rx_handle_wifi() just wakes those processes up and they
95 * grab the pending notification.
97 static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf,
98 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
100 struct iwm_umac_notif_error *error;
101 struct iwm_fw_error_hdr *fw_err;
103 error = (struct iwm_umac_notif_error *)buf;
104 fw_err = &error->err;
106 memcpy(iwm->last_fw_err, fw_err, sizeof(struct iwm_fw_error_hdr));
108 IWM_ERR(iwm, "%cMAC FW ERROR:\n",
109 (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U');
110 IWM_ERR(iwm, "\tCategory: %d\n", le32_to_cpu(fw_err->category));
111 IWM_ERR(iwm, "\tStatus: 0x%x\n", le32_to_cpu(fw_err->status));
112 IWM_ERR(iwm, "\tPC: 0x%x\n", le32_to_cpu(fw_err->pc));
113 IWM_ERR(iwm, "\tblink1: %d\n", le32_to_cpu(fw_err->blink1));
114 IWM_ERR(iwm, "\tblink2: %d\n", le32_to_cpu(fw_err->blink2));
115 IWM_ERR(iwm, "\tilink1: %d\n", le32_to_cpu(fw_err->ilink1));
116 IWM_ERR(iwm, "\tilink2: %d\n", le32_to_cpu(fw_err->ilink2));
117 IWM_ERR(iwm, "\tData1: 0x%x\n", le32_to_cpu(fw_err->data1));
118 IWM_ERR(iwm, "\tData2: 0x%x\n", le32_to_cpu(fw_err->data2));
119 IWM_ERR(iwm, "\tLine number: %d\n", le32_to_cpu(fw_err->line_num));
120 IWM_ERR(iwm, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err->umac_status));
121 IWM_ERR(iwm, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err->lmac_status));
122 IWM_ERR(iwm, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err->sdio_status));
129 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
130 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
132 struct iwm_umac_notif_alive *alive_resp =
133 (struct iwm_umac_notif_alive *)(buf);
134 u16 status = le16_to_cpu(alive_resp->status);
136 if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
137 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
141 iwm_tx_credit_init_pools(iwm, alive_resp);
146 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
147 unsigned long buf_size,
148 struct iwm_wifi_cmd *cmd)
150 struct wiphy *wiphy = iwm_to_wiphy(iwm);
151 struct iwm_umac_notif_init_complete *init_complete =
152 (struct iwm_umac_notif_init_complete *)(buf);
153 u16 status = le16_to_cpu(init_complete->status);
154 bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
157 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
159 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
161 wiphy_rfkill_set_hw_state(wiphy, blocked);
166 static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf,
167 unsigned long buf_size,
168 struct iwm_wifi_cmd *cmd)
170 int pool_nr, total_freed_pages;
171 unsigned long pool_map;
173 struct iwm_umac_notif_page_dealloc *dealloc =
174 (struct iwm_umac_notif_page_dealloc *)buf;
176 pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
177 pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
179 IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
180 "update map 0x%lx\n", pool_nr, pool_map);
182 spin_lock(&iwm->tx_credit.lock);
184 for (i = 0; i < pool_nr; i++) {
185 id = GET_VAL32(dealloc->grp_info[i],
186 UMAC_DEALLOC_NTFY_GROUP_NUM);
187 if (test_bit(id, &pool_map)) {
188 total_freed_pages = GET_VAL32(dealloc->grp_info[i],
189 UMAC_DEALLOC_NTFY_PAGE_CNT);
190 iwm_tx_credit_inc(iwm, id, total_freed_pages);
194 spin_unlock(&iwm->tx_credit.lock);
199 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
200 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
202 IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
207 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
208 unsigned long buf_size,
209 struct iwm_wifi_cmd *cmd)
211 IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
216 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
217 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
219 struct iwm_lmac_tx_resp *tx_resp;
220 struct iwm_umac_wifi_in_hdr *hdr;
222 tx_resp = (struct iwm_lmac_tx_resp *)
223 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
224 hdr = (struct iwm_umac_wifi_in_hdr *)buf;
226 IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
228 IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n",
229 le16_to_cpu(hdr->sw_hdr.cmd.seq_num));
230 IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt);
231 IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n",
232 le16_to_cpu(tx_resp->retry_cnt));
233 IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl));
234 IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n",
235 le16_to_cpu(tx_resp->byte_cnt));
236 IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status));
242 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
243 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
247 struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
248 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
250 opcode = hdr->opcode;
252 BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
253 opcode < PHY_CALIBRATE_OPCODES_NUM);
255 IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
258 buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
259 calib_buf = iwm->calib_res[opcode].buf;
261 if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
263 calib_buf = kzalloc(buf_size, GFP_KERNEL);
265 IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
268 iwm->calib_res[opcode].buf = calib_buf;
269 iwm->calib_res[opcode].size = buf_size;
272 memcpy(calib_buf, hdr, buf_size);
273 set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
278 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
279 unsigned long buf_size,
280 struct iwm_wifi_cmd *cmd)
282 IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
287 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
288 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
290 struct iwm_lmac_cal_cfg_resp *cal_resp;
292 cal_resp = (struct iwm_lmac_cal_cfg_resp *)
293 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
295 IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
296 le32_to_cpu(cal_resp->status));
301 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
302 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
304 struct iwm_umac_notif_wifi_status *status =
305 (struct iwm_umac_notif_wifi_status *)buf;
307 iwm->core_enabled |= le16_to_cpu(status->status);
312 static struct iwm_rx_ticket_node *
313 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
315 struct iwm_rx_ticket_node *ticket_node;
317 ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
319 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
320 return ERR_PTR(-ENOMEM);
323 ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL);
324 if (!ticket_node->ticket) {
325 IWM_ERR(iwm, "Couldn't allocate RX ticket\n");
327 return ERR_PTR(-ENOMEM);
330 memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
331 INIT_LIST_HEAD(&ticket_node->node);
336 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
338 kfree(ticket_node->ticket);
342 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
344 u8 id_hash = IWM_RX_ID_GET_HASH(id);
345 struct iwm_rx_packet *packet;
347 list_for_each_entry(packet, &iwm->rx_packets[id_hash], node)
348 if (packet->id == id)
354 static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf,
357 struct iwm_rx_packet *packet;
359 packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL);
361 IWM_ERR(iwm, "Couldn't allocate packet\n");
362 return ERR_PTR(-ENOMEM);
365 packet->skb = dev_alloc_skb(size);
367 IWM_ERR(iwm, "Couldn't allocate packet SKB\n");
369 return ERR_PTR(-ENOMEM);
372 packet->pkt_size = size;
374 skb_put(packet->skb, size);
375 memcpy(packet->skb->data, buf, size);
376 INIT_LIST_HEAD(&packet->node);
382 void iwm_rx_free(struct iwm_priv *iwm)
384 struct iwm_rx_ticket_node *ticket, *nt;
385 struct iwm_rx_packet *packet, *np;
388 list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) {
389 list_del(&ticket->node);
390 iwm_rx_ticket_node_free(ticket);
393 for (i = 0; i < IWM_RX_ID_HASH; i++) {
394 list_for_each_entry_safe(packet, np, &iwm->rx_packets[i],
396 list_del(&packet->node);
397 kfree_skb(packet->skb);
403 static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
404 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
406 struct iwm_umac_notif_rx_ticket *ntf_rx_ticket =
407 (struct iwm_umac_notif_rx_ticket *)buf;
408 struct iwm_rx_ticket *ticket =
409 (struct iwm_rx_ticket *)ntf_rx_ticket->tickets;
410 int i, schedule_rx = 0;
412 for (i = 0; i < ntf_rx_ticket->num_tickets; i++) {
413 struct iwm_rx_ticket_node *ticket_node;
415 switch (le16_to_cpu(ticket->action)) {
416 case IWM_RX_TICKET_RELEASE:
417 case IWM_RX_TICKET_DROP:
418 /* We can push the packet to the stack */
419 ticket_node = iwm_rx_ticket_node_alloc(iwm, ticket);
420 if (IS_ERR(ticket_node))
421 return PTR_ERR(ticket_node);
423 IWM_DBG_RX(iwm, DBG, "TICKET %s(%d)\n",
424 ticket->action == IWM_RX_TICKET_RELEASE ?
427 list_add_tail(&ticket_node->node, &iwm->rx_tickets);
430 * We received an Rx ticket, most likely there's
431 * a packet pending for it, it's not worth going
432 * through the packet hash list to double check.
433 * Let's just fire the rx worker..
440 IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
448 queue_work(iwm->rx_wq, &iwm->rx_worker);
453 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
454 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
456 struct iwm_umac_wifi_in_hdr *wifi_hdr;
457 struct iwm_rx_packet *packet;
461 IWM_DBG_RX(iwm, DBG, "\n");
463 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
464 id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
465 buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
466 packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
468 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
469 wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
470 IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
471 IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
473 packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
475 return PTR_ERR(packet);
477 list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
479 /* We might (unlikely) have received the packet _after_ the ticket */
480 queue_work(iwm->rx_wq, &iwm->rx_worker);
486 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
487 unsigned long buf_size,
488 struct iwm_wifi_cmd *cmd)
490 struct iwm_umac_notif_assoc_start *start;
492 start = (struct iwm_umac_notif_assoc_start *)buf;
494 IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
495 start->bssid, le32_to_cpu(start->roam_reason));
497 wake_up_interruptible(&iwm->mlme_queue);
502 static u8 iwm_is_open_wep_profile(struct iwm_priv *iwm)
504 if ((iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_40 ||
505 iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_104) &&
506 (iwm->umac_profile->sec.ucast_cipher ==
507 iwm->umac_profile->sec.mcast_cipher) &&
508 (iwm->umac_profile->sec.auth_type == UMAC_AUTH_TYPE_OPEN))
514 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
515 unsigned long buf_size,
516 struct iwm_wifi_cmd *cmd)
518 struct wiphy *wiphy = iwm_to_wiphy(iwm);
519 struct ieee80211_channel *chan;
520 struct iwm_umac_notif_assoc_complete *complete =
521 (struct iwm_umac_notif_assoc_complete *)buf;
523 IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
524 complete->bssid, complete->status);
526 switch (le32_to_cpu(complete->status)) {
527 case UMAC_ASSOC_COMPLETE_SUCCESS:
528 chan = ieee80211_get_channel(wiphy,
529 ieee80211_channel_to_frequency(complete->channel));
530 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) {
531 /* Associated to a unallowed channel, disassociate. */
532 __iwm_invalidate_mlme_profile(iwm);
533 IWM_WARN(iwm, "Couldn't associate with %pM due to "
534 "channel %d is disabled. Check your local "
535 "regulatory setting.\n",
536 complete->bssid, complete->channel);
540 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
541 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
542 iwm->channel = complete->channel;
544 /* Internal roaming state, avoid notifying SME. */
545 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
546 && iwm->conf.mode == UMAC_MODE_BSS) {
547 cancel_delayed_work(&iwm->disconnect);
548 cfg80211_roamed(iwm_to_ndev(iwm),
550 iwm->req_ie, iwm->req_ie_len,
551 iwm->resp_ie, iwm->resp_ie_len,
558 if (iwm->conf.mode == UMAC_MODE_IBSS)
561 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
562 cfg80211_connect_result(iwm_to_ndev(iwm),
564 iwm->req_ie, iwm->req_ie_len,
565 iwm->resp_ie, iwm->resp_ie_len,
569 cfg80211_roamed(iwm_to_ndev(iwm),
571 iwm->req_ie, iwm->req_ie_len,
572 iwm->resp_ie, iwm->resp_ie_len,
575 case UMAC_ASSOC_COMPLETE_FAILURE:
577 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
578 memset(iwm->bssid, 0, ETH_ALEN);
581 /* Internal roaming state, avoid notifying SME. */
582 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
583 && iwm->conf.mode == UMAC_MODE_BSS) {
584 cancel_delayed_work(&iwm->disconnect);
590 if (iwm->conf.mode == UMAC_MODE_IBSS)
593 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
594 if (!iwm_is_open_wep_profile(iwm)) {
595 cfg80211_connect_result(iwm_to_ndev(iwm),
598 WLAN_STATUS_UNSPECIFIED_FAILURE,
601 /* Let's try shared WEP auth */
602 IWM_ERR(iwm, "Trying WEP shared auth\n");
603 schedule_work(&iwm->auth_retry_worker);
606 cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
613 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
617 cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
618 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
622 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
623 unsigned long buf_size,
624 struct iwm_wifi_cmd *cmd)
626 struct iwm_umac_notif_profile_invalidate *invalid;
629 invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
630 reason = le32_to_cpu(invalid->reason);
632 IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
634 if (reason != UMAC_PROFILE_INVALID_REQUEST &&
635 test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
636 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
637 0, WLAN_STATUS_UNSPECIFIED_FAILURE,
640 clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
641 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
643 iwm->umac_profile_active = 0;
644 memset(iwm->bssid, 0, ETH_ALEN);
649 wake_up_interruptible(&iwm->mlme_queue);
654 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
656 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
657 unsigned long buf_size,
658 struct iwm_wifi_cmd *cmd)
660 IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
662 schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
667 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
668 unsigned long buf_size,
669 struct iwm_wifi_cmd *cmd)
672 struct iwm_umac_notif_scan_complete *scan_complete =
673 (struct iwm_umac_notif_scan_complete *)buf;
674 u32 result = le32_to_cpu(scan_complete->result);
676 IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
677 le32_to_cpu(scan_complete->type),
678 le32_to_cpu(scan_complete->result),
679 scan_complete->seq_num);
681 if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
682 IWM_ERR(iwm, "Scan complete while device not scanning\n");
685 if (!iwm->scan_request)
688 ret = iwm_cfg80211_inform_bss(iwm);
690 cfg80211_scan_done(iwm->scan_request,
691 (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
692 iwm->scan_request = NULL;
697 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
698 unsigned long buf_size,
699 struct iwm_wifi_cmd *cmd)
701 struct iwm_umac_notif_sta_info *umac_sta =
702 (struct iwm_umac_notif_sta_info *)buf;
703 struct iwm_sta_info *sta;
706 switch (le32_to_cpu(umac_sta->opcode)) {
707 case UMAC_OPCODE_ADD_MODIFY:
708 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
710 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
711 "addr = %pM, qos = %d\n",
712 sta->valid ? "Modify" : "Add",
713 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
714 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
716 umac_sta->flags & UMAC_STA_FLAG_QOS);
719 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
720 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
721 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
723 case UMAC_OPCODE_REMOVE:
724 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
726 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
727 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
730 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
732 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
736 case UMAC_OPCODE_CLEAR_ALL:
737 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
738 iwm->sta_table[i].valid = 0;
748 static int iwm_mlme_medium_lost(struct iwm_priv *iwm, u8 *buf,
749 unsigned long buf_size,
750 struct iwm_wifi_cmd *cmd)
752 struct wiphy *wiphy = iwm_to_wiphy(iwm);
754 IWM_DBG_NTF(iwm, DBG, "WiFi/WiMax coexistence radio is OFF\n");
756 wiphy_rfkill_set_hw_state(wiphy, true);
761 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
762 unsigned long buf_size,
763 struct iwm_wifi_cmd *cmd)
765 struct wiphy *wiphy = iwm_to_wiphy(iwm);
766 struct ieee80211_mgmt *mgmt;
767 struct iwm_umac_notif_bss_info *umac_bss =
768 (struct iwm_umac_notif_bss_info *)buf;
769 struct ieee80211_channel *channel;
770 struct ieee80211_supported_band *band;
771 struct iwm_bss_info *bss;
774 u16 frame_len = le16_to_cpu(umac_bss->frame_len);
775 size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
777 mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
779 IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
780 IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
781 IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
782 le32_to_cpu(umac_bss->timestamp));
783 IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
784 le16_to_cpu(umac_bss->table_idx));
785 IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
786 IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
787 IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
788 IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
790 list_for_each_entry(bss, &iwm->bss_list, node)
791 if (bss->bss->table_idx == umac_bss->table_idx)
794 if (&bss->node != &iwm->bss_list) {
795 /* Remove the old BSS entry, we will add it back later. */
796 list_del(&bss->node);
801 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
803 IWM_ERR(iwm, "Couldn't allocate bss_info\n");
808 bss->bss = kzalloc(bss_len, GFP_KERNEL);
811 IWM_ERR(iwm, "Couldn't allocate bss\n");
815 INIT_LIST_HEAD(&bss->node);
816 memcpy(bss->bss, umac_bss, bss_len);
818 if (umac_bss->band == UMAC_BAND_2GHZ)
819 band = wiphy->bands[IEEE80211_BAND_2GHZ];
820 else if (umac_bss->band == UMAC_BAND_5GHZ)
821 band = wiphy->bands[IEEE80211_BAND_5GHZ];
823 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
827 freq = ieee80211_channel_to_frequency(umac_bss->channel);
828 channel = ieee80211_get_channel(wiphy, freq);
829 signal = umac_bss->rssi * 100;
831 bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
837 list_add_tail(&bss->node, &iwm->bss_list);
847 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
848 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
850 struct iwm_umac_notif_bss_removed *bss_rm =
851 (struct iwm_umac_notif_bss_removed *)buf;
852 struct iwm_bss_info *bss, *next;
856 for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
857 table_idx = (le16_to_cpu(bss_rm->entries[i])
858 & IWM_BSS_REMOVE_INDEX_MSK);
859 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
860 if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
861 struct ieee80211_mgmt *mgmt;
863 mgmt = (struct ieee80211_mgmt *)
864 (bss->bss->frame_buf);
865 IWM_DBG_MLME(iwm, ERR,
866 "BSS removed: %pM\n",
868 list_del(&bss->node);
877 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
878 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
880 struct iwm_umac_notif_mgt_frame *mgt_frame =
881 (struct iwm_umac_notif_mgt_frame *)buf;
882 struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
884 IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
885 le16_to_cpu(mgt_frame->len));
887 if (ieee80211_is_assoc_req(mgt->frame_control)) {
888 iwm->req_ie_len = le16_to_cpu(mgt_frame->len)
889 - offsetof(struct ieee80211_mgmt,
890 u.assoc_req.variable);
892 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
893 iwm->req_ie_len, GFP_KERNEL);
894 } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
895 iwm->req_ie_len = le16_to_cpu(mgt_frame->len)
896 - offsetof(struct ieee80211_mgmt,
897 u.reassoc_req.variable);
899 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
900 iwm->req_ie_len, GFP_KERNEL);
901 } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
902 iwm->resp_ie_len = le16_to_cpu(mgt_frame->len)
903 - offsetof(struct ieee80211_mgmt,
904 u.assoc_resp.variable);
906 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
907 iwm->resp_ie_len, GFP_KERNEL);
908 } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
909 iwm->resp_ie_len = le16_to_cpu(mgt_frame->len)
910 - offsetof(struct ieee80211_mgmt,
911 u.reassoc_resp.variable);
913 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
914 iwm->resp_ie_len, GFP_KERNEL);
916 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
917 le16_to_cpu(mgt->frame_control));
924 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
925 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
927 struct iwm_umac_notif_wifi_if *notif =
928 (struct iwm_umac_notif_wifi_if *)buf;
930 switch (notif->status) {
931 case WIFI_IF_NTFY_ASSOC_START:
932 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
933 case WIFI_IF_NTFY_ASSOC_COMPLETE:
934 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
935 case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
936 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
937 case WIFI_IF_NTFY_CONNECTION_TERMINATED:
938 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
939 case WIFI_IF_NTFY_SCAN_COMPLETE:
940 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
941 case WIFI_IF_NTFY_STA_TABLE_CHANGE:
942 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
943 case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
944 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
946 case WIFI_IF_NTFY_RADIO_PREEMPTION:
947 return iwm_mlme_medium_lost(iwm, buf, buf_size, cmd);
948 case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
949 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
950 case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
951 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
953 case WIFI_IF_NTFY_MGMT_FRAME:
954 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
955 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
956 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
957 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
958 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
959 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
960 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
961 case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
962 case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
963 case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
964 case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
965 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
969 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
976 #define IWM_STATS_UPDATE_INTERVAL (2 * HZ)
978 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
979 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
981 struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
982 struct iw_statistics *wstats = &iwm->wstats;
986 IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
988 if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
989 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
990 max_rate = max_t(u16, max_rate,
991 max(le16_to_cpu(stats->tx_rate[i]),
992 le16_to_cpu(stats->rx_rate[i])));
994 /* UMAC passes rate info multiplies by 2 */
995 iwm->rate = max_rate >> 1;
997 iwm->txpower = le32_to_cpu(stats->tx_power);
1001 wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
1002 wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
1003 wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
1004 wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
1006 wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
1008 /* according to cfg80211 */
1009 if (stats->rssi_dbm < -110)
1010 wstats->qual.qual = 0;
1011 else if (stats->rssi_dbm > -40)
1012 wstats->qual.qual = 70;
1014 wstats->qual.qual = stats->rssi_dbm + 110;
1016 wstats->qual.level = stats->rssi_dbm;
1017 wstats->qual.noise = stats->noise_dbm;
1018 wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
1020 schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
1022 mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
1027 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
1028 unsigned long buf_size,
1029 struct iwm_wifi_cmd *cmd)
1031 struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
1032 (struct iwm_umac_cmd_eeprom_proxy *)
1033 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1034 struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
1035 u32 hdr_offset = le32_to_cpu(hdr->offset);
1036 u32 hdr_len = le32_to_cpu(hdr->len);
1037 u32 hdr_type = le32_to_cpu(hdr->type);
1039 IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
1040 hdr_type, hdr_len, hdr_offset);
1042 if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
1046 case IWM_UMAC_CMD_EEPROM_TYPE_READ:
1047 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1049 case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1057 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1058 unsigned long buf_size,
1059 struct iwm_wifi_cmd *cmd)
1061 struct iwm_umac_cmd_get_channel_list *ch_list =
1062 (struct iwm_umac_cmd_get_channel_list *)
1063 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1064 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1065 struct ieee80211_supported_band *band;
1068 band = wiphy->bands[IEEE80211_BAND_2GHZ];
1070 for (i = 0; i < band->n_channels; i++) {
1071 unsigned long ch_mask_0 =
1072 le32_to_cpu(ch_list->ch[0].channels_mask);
1073 unsigned long ch_mask_2 =
1074 le32_to_cpu(ch_list->ch[2].channels_mask);
1076 if (!test_bit(i, &ch_mask_0))
1077 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1079 if (!test_bit(i, &ch_mask_2))
1080 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1083 band = wiphy->bands[IEEE80211_BAND_5GHZ];
1085 for (i = 0; i < min(band->n_channels, 32); i++) {
1086 unsigned long ch_mask_1 =
1087 le32_to_cpu(ch_list->ch[1].channels_mask);
1088 unsigned long ch_mask_3 =
1089 le32_to_cpu(ch_list->ch[3].channels_mask);
1091 if (!test_bit(i, &ch_mask_1))
1092 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1094 if (!test_bit(i, &ch_mask_3))
1095 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1101 static int iwm_ntf_stop_resume_tx(struct iwm_priv *iwm, u8 *buf,
1102 unsigned long buf_size,
1103 struct iwm_wifi_cmd *cmd)
1105 struct iwm_umac_notif_stop_resume_tx *stp_res_tx =
1106 (struct iwm_umac_notif_stop_resume_tx *)buf;
1107 struct iwm_sta_info *sta_info;
1108 struct iwm_tid_info *tid_info;
1109 u8 sta_id = STA_ID_N_COLOR_ID(stp_res_tx->sta_id);
1110 u16 tid_msk = le16_to_cpu(stp_res_tx->stop_resume_tid_msk);
1114 IWM_DBG_NTF(iwm, DBG, "stop/resume notification:\n"
1117 "\tTID bitmask: 0x%x\n",
1118 stp_res_tx->flags, stp_res_tx->sta_id,
1119 stp_res_tx->stop_resume_tid_msk);
1121 if (stp_res_tx->flags & UMAC_STOP_TX_FLAG)
1124 sta_info = &iwm->sta_table[sta_id];
1125 if (!sta_info->valid) {
1126 IWM_ERR(iwm, "Stoping an invalid STA: %d %d\n",
1127 sta_id, stp_res_tx->sta_id);
1131 for_each_bit(bit, (unsigned long *)&tid_msk, IWM_UMAC_TID_NR) {
1132 tid_info = &sta_info->tid_info[bit];
1134 mutex_lock(&tid_info->mutex);
1135 tid_info->stopped = stop;
1136 mutex_unlock(&tid_info->mutex);
1139 struct iwm_tx_queue *txq;
1140 int queue = iwm_tid_to_queue(bit);
1145 txq = &iwm->txq[queue];
1147 * If we resume, we have to move our SKBs
1148 * back to the tx queue and queue some work.
1150 spin_lock_bh(&txq->lock);
1151 skb_queue_splice_init(&txq->queue, &txq->stopped_queue);
1152 spin_unlock_bh(&txq->lock);
1154 queue_work(txq->wq, &txq->worker);
1159 /* We send an ACK only for the stop case */
1161 ret = iwm_send_umac_stop_resume_tx(iwm, stp_res_tx);
1166 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1167 unsigned long buf_size,
1168 struct iwm_wifi_cmd *cmd)
1170 struct iwm_umac_wifi_if *hdr;
1173 IWM_ERR(iwm, "Couldn't find expected wifi command\n");
1177 hdr = (struct iwm_umac_wifi_if *)cmd->buf.payload;
1179 IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1180 "oid is 0x%x\n", hdr->oid);
1182 if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1183 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1184 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1189 case UMAC_WIFI_IF_CMD_SET_PROFILE:
1190 iwm->umac_profile_active = 1;
1199 #define CT_KILL_DELAY (30 * HZ)
1200 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1201 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1203 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1204 struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1205 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1206 u32 flags = le32_to_cpu(state->flags);
1208 IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1209 flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1210 flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1212 if (flags & IWM_CARD_STATE_CTKILL_DISABLED) {
1214 * We got a CTKILL event: We bring the interface down in
1215 * oder to cool the device down, and try to bring it up
1216 * 30 seconds later. If it's still too hot, we'll go through
1217 * this code path again.
1219 cancel_delayed_work_sync(&iwm->ct_kill_delay);
1220 schedule_delayed_work(&iwm->ct_kill_delay, CT_KILL_DELAY);
1223 wiphy_rfkill_set_hw_state(wiphy, flags &
1224 (IWM_CARD_STATE_HW_DISABLED |
1225 IWM_CARD_STATE_CTKILL_DISABLED));
1230 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1231 unsigned long buf_size)
1233 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1234 struct iwm_wifi_cmd *cmd;
1240 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1241 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1243 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1244 if (source >= IWM_SRC_NUM) {
1245 IWM_CRIT(iwm, "invalid source %d\n", source);
1249 count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1250 count += sizeof(struct iwm_umac_wifi_in_hdr) -
1251 sizeof(struct iwm_dev_cmd_hdr);
1252 if (count > buf_size) {
1253 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1257 resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1259 seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1261 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1262 cmd_id, source, seq_num);
1265 * If this is a response to a previously sent command, there must
1266 * be a pending command for this sequence number.
1268 cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1270 /* Notify the caller only for sync commands. */
1272 case UMAC_HDI_IN_SOURCE_FHRX:
1273 if (iwm->lmac_handlers[cmd_id] &&
1274 test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1275 return iwm_notif_send(iwm, cmd, cmd_id, source,
1278 case UMAC_HDI_IN_SOURCE_FW:
1279 if (iwm->umac_handlers[cmd_id] &&
1280 test_bit(cmd_id, &iwm->umac_handler_map[0]))
1281 return iwm_notif_send(iwm, cmd, cmd_id, source,
1284 case UMAC_HDI_IN_SOURCE_UDMA:
1288 return iwm_rx_handle_resp(iwm, buf, count, cmd);
1291 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1292 struct iwm_wifi_cmd *cmd)
1295 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1298 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1299 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1301 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1303 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1306 case UMAC_HDI_IN_SOURCE_FHRX:
1307 if (iwm->lmac_handlers[cmd_id])
1308 ret = iwm->lmac_handlers[cmd_id]
1309 (iwm, buf, buf_size, cmd);
1311 case UMAC_HDI_IN_SOURCE_FW:
1312 if (iwm->umac_handlers[cmd_id])
1313 ret = iwm->umac_handlers[cmd_id]
1314 (iwm, buf, buf_size, cmd);
1316 case UMAC_HDI_IN_SOURCE_UDMA:
1326 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1327 unsigned long buf_size)
1330 struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1331 struct iwm_nonwifi_cmd *cmd;
1333 seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1336 * We received a non wifi answer.
1337 * Let's check if there's a pending command for it, and if so
1338 * replace the command payload with the buffer, and then wake the
1340 * That means we only support synchronised non wifi command response
1343 list_for_each_entry(cmd, &iwm->nonwifi_pending_cmd, pending)
1344 if (cmd->seq_num == seq_num) {
1345 cmd->resp_received = 1;
1346 cmd->buf.len = buf_size;
1347 memcpy(cmd->buf.hdr, buf, buf_size);
1348 wake_up_interruptible(&iwm->nonwifi_queue);
1354 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1355 unsigned long buf_size)
1359 unsigned long buf_offset = 0;
1360 struct iwm_udma_in_hdr *hdr;
1363 * To allow for a more efficient bus usage, UMAC
1364 * messages are encapsulated into UDMA ones. This
1365 * way we can have several UMAC messages in one bus
1367 * A UDMA frame size is always aligned on 16 bytes,
1368 * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1369 * word. This is how we parse a bus frame into several
1372 while (buf_offset < buf_size) {
1374 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1376 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1377 IWM_DBG_RX(iwm, DBG, "End of frame\n");
1381 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1383 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1385 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1386 ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1387 buf_size - buf_offset);
1388 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1389 if (GET_VAL32(hdr->cmd,
1390 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1391 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1392 IWM_ERR(iwm, "Incorrect hw signature\n");
1395 ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1396 buf_size - buf_offset);
1398 IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1402 buf_offset += iwm_rx_resp_size(hdr);
1408 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1410 struct iwm_udma_in_hdr *hdr;
1412 hdr = (struct iwm_udma_in_hdr *)buf;
1414 switch (le32_to_cpu(hdr->cmd)) {
1415 case UMAC_REBOOT_BARKER:
1416 if (test_bit(IWM_STATUS_READY, &iwm->status)) {
1417 IWM_ERR(iwm, "Unexpected BARKER\n");
1419 schedule_work(&iwm->reset_worker);
1424 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1425 IWM_SRC_UDMA, buf, buf_size);
1426 case UMAC_ACK_BARKER:
1427 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1428 IWM_SRC_UDMA, NULL, 0);
1430 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1431 return iwm_rx_handle_umac(iwm, buf, buf_size);
1437 static const iwm_handler iwm_umac_handlers[] =
1439 [UMAC_NOTIFY_OPCODE_ERROR] = iwm_ntf_error,
1440 [UMAC_NOTIFY_OPCODE_ALIVE] = iwm_ntf_umac_alive,
1441 [UMAC_NOTIFY_OPCODE_INIT_COMPLETE] = iwm_ntf_init_complete,
1442 [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS] = iwm_ntf_wifi_status,
1443 [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_mlme,
1444 [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC] = iwm_ntf_tx_credit_update,
1445 [UMAC_NOTIFY_OPCODE_RX_TICKET] = iwm_ntf_rx_ticket,
1446 [UMAC_CMD_OPCODE_RESET] = iwm_ntf_umac_reset,
1447 [UMAC_NOTIFY_OPCODE_STATS] = iwm_ntf_statistics,
1448 [UMAC_CMD_OPCODE_EEPROM_PROXY] = iwm_ntf_eeprom_proxy,
1449 [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST] = iwm_ntf_channel_info_list,
1450 [UMAC_CMD_OPCODE_STOP_RESUME_STA_TX] = iwm_ntf_stop_resume_tx,
1451 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1452 [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_wifi_if_wrapper,
1455 static const iwm_handler iwm_lmac_handlers[] =
1457 [REPLY_TX] = iwm_ntf_tx,
1458 [REPLY_ALIVE] = iwm_ntf_lmac_version,
1459 [CALIBRATION_RES_NOTIFICATION] = iwm_ntf_calib_res,
1460 [CALIBRATION_COMPLETE_NOTIFICATION] = iwm_ntf_calib_complete,
1461 [CALIBRATION_CFG_CMD] = iwm_ntf_calib_cfg,
1462 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1463 [CARD_STATE_NOTIFICATION] = iwm_ntf_card_state,
1466 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1468 iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1469 iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1472 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1474 struct ieee80211_hdr *hdr;
1475 unsigned int hdr_len;
1477 hdr = (struct ieee80211_hdr *)skb->data;
1479 if (!ieee80211_has_protected(hdr->frame_control))
1482 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1483 if (hdr_total_len <= hdr_len)
1486 memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1487 skb_pull(skb, (hdr_total_len - hdr_len));
1490 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1491 struct iwm_rx_packet *packet,
1492 struct iwm_rx_ticket_node *ticket_node)
1494 u32 payload_offset = 0, payload_len;
1495 struct iwm_rx_ticket *ticket = ticket_node->ticket;
1496 struct iwm_rx_mpdu_hdr *mpdu_hdr;
1497 struct ieee80211_hdr *hdr;
1499 mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1500 payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1501 /* Padding is 0 or 2 bytes */
1502 payload_len = le16_to_cpu(mpdu_hdr->len) +
1503 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1504 payload_len -= ticket->tail_len;
1506 IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1507 "ticket offset:%d ticket tail len:%d\n",
1508 payload_len, payload_offset, ticket->payload_offset,
1511 IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1513 skb_pull(packet->skb, payload_offset);
1514 skb_trim(packet->skb, payload_len);
1516 iwm_remove_iv(packet->skb, ticket->payload_offset);
1518 hdr = (struct ieee80211_hdr *) packet->skb->data;
1519 if (ieee80211_is_data_qos(hdr->frame_control)) {
1520 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1521 * to the qos_ctl field in IEEE 802.11 headers. */
1522 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1524 ieee80211_hdrlen(hdr->frame_control) -
1525 IEEE80211_QOS_CTL_LEN);
1526 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1527 IEEE80211_QOS_CTL_LEN + 2);
1528 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1531 IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1532 packet->skb->data, packet->skb->len);
1535 static void classify8023(struct sk_buff *skb)
1537 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1539 if (ieee80211_is_data_qos(hdr->frame_control)) {
1540 u8 *qc = ieee80211_get_qos_ctl(hdr);
1541 /* frame has qos control */
1542 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1548 static void iwm_rx_process_amsdu(struct iwm_priv *iwm, struct sk_buff *skb)
1550 struct wireless_dev *wdev = iwm_to_wdev(iwm);
1551 struct net_device *ndev = iwm_to_ndev(iwm);
1552 struct sk_buff_head list;
1553 struct sk_buff *frame;
1555 IWM_HEXDUMP(iwm, DBG, RX, "A-MSDU: ", skb->data, skb->len);
1557 __skb_queue_head_init(&list);
1558 ieee80211_amsdu_to_8023s(skb, &list, ndev->dev_addr, wdev->iftype, 0);
1560 while ((frame = __skb_dequeue(&list))) {
1561 ndev->stats.rx_packets++;
1562 ndev->stats.rx_bytes += frame->len;
1564 frame->protocol = eth_type_trans(frame, ndev);
1565 frame->ip_summed = CHECKSUM_NONE;
1566 memset(frame->cb, 0, sizeof(frame->cb));
1568 if (netif_rx_ni(frame) == NET_RX_DROP) {
1569 IWM_ERR(iwm, "Packet dropped\n");
1570 ndev->stats.rx_dropped++;
1575 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1576 struct iwm_rx_packet *packet,
1577 struct iwm_rx_ticket_node *ticket_node)
1580 struct sk_buff *skb = packet->skb;
1581 struct wireless_dev *wdev = iwm_to_wdev(iwm);
1582 struct net_device *ndev = iwm_to_ndev(iwm);
1584 IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1586 switch (le16_to_cpu(ticket_node->ticket->action)) {
1587 case IWM_RX_TICKET_RELEASE:
1588 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1590 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1591 skb->dev = iwm_to_ndev(iwm);
1594 if (le16_to_cpu(ticket_node->ticket->flags) &
1595 IWM_RX_TICKET_AMSDU_MSK) {
1596 iwm_rx_process_amsdu(iwm, skb);
1600 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1602 IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1604 kfree_skb(packet->skb);
1608 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1610 ndev->stats.rx_packets++;
1611 ndev->stats.rx_bytes += skb->len;
1613 skb->protocol = eth_type_trans(skb, ndev);
1614 skb->ip_summed = CHECKSUM_NONE;
1615 memset(skb->cb, 0, sizeof(skb->cb));
1617 if (netif_rx_ni(skb) == NET_RX_DROP) {
1618 IWM_ERR(iwm, "Packet dropped\n");
1619 ndev->stats.rx_dropped++;
1622 case IWM_RX_TICKET_DROP:
1623 IWM_DBG_RX(iwm, DBG, "DROP packet: 0x%x\n",
1624 le16_to_cpu(ticket_node->ticket->flags));
1625 kfree_skb(packet->skb);
1628 IWM_ERR(iwm, "Unknown ticket action: %d\n",
1629 le16_to_cpu(ticket_node->ticket->action));
1630 kfree_skb(packet->skb);
1634 iwm_rx_ticket_node_free(ticket_node);
1638 * Rx data processing:
1640 * We're receiving Rx packet from the LMAC, and Rx ticket from
1642 * To forward a target data packet upstream (i.e. to the
1643 * kernel network stack), we must have received an Rx ticket
1644 * that tells us we're allowed to release this packet (ticket
1645 * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1646 * among other things, where valid data actually starts in the Rx
1649 void iwm_rx_worker(struct work_struct *work)
1651 struct iwm_priv *iwm;
1652 struct iwm_rx_ticket_node *ticket, *next;
1654 iwm = container_of(work, struct iwm_priv, rx_worker);
1657 * We go through the tickets list and if there is a pending
1658 * packet for it, we push it upstream.
1659 * We stop whenever a ticket is missing its packet, as we're
1660 * supposed to send the packets in order.
1662 list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1663 struct iwm_rx_packet *packet =
1664 iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1667 IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1668 "to be handled first\n",
1669 le16_to_cpu(ticket->ticket->id));
1673 list_del(&ticket->node);
1674 list_del(&packet->node);
1675 iwm_rx_process_packet(iwm, packet, ticket);