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/etherdevice.h>
42 #include <linux/wireless.h>
43 #include <linux/ieee80211.h>
44 #include <linux/if_arp.h>
45 #include <linux/list.h>
46 #include <net/iw_handler.h>
58 static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr *hdr)
60 if ((le32_to_cpu(hdr->cmd) == UMAC_PAD_TERMINAL) ||
61 (le32_to_cpu(hdr->size) == UMAC_PAD_TERMINAL))
67 static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr *hdr)
69 return ALIGN(le32_to_cpu(hdr->size) + sizeof(struct iwm_udma_in_hdr),
74 * Notification handlers:
76 * For every possible notification we can receive from the
77 * target, we have a handler.
78 * When we get a target notification, and there is no one
79 * waiting for it, it's just processed through the rx code
83 * -> iwm_rx_handle_umac()
84 * -> iwm_rx_handle_wifi()
85 * -> iwm_rx_handle_resp()
90 * -> iwm_rx_handle_non_wifi()
92 * If there are processes waiting for this notification, then
93 * iwm_rx_handle_wifi() just wakes those processes up and they
94 * grab the pending notification.
96 static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf,
97 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
99 struct iwm_umac_notif_error *error;
100 struct iwm_fw_error_hdr *fw_err;
102 error = (struct iwm_umac_notif_error *)buf;
103 fw_err = &error->err;
105 IWM_ERR(iwm, "%cMAC FW ERROR:\n",
106 (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U');
107 IWM_ERR(iwm, "\tCategory: %d\n", le32_to_cpu(fw_err->category));
108 IWM_ERR(iwm, "\tStatus: 0x%x\n", le32_to_cpu(fw_err->status));
109 IWM_ERR(iwm, "\tPC: 0x%x\n", le32_to_cpu(fw_err->pc));
110 IWM_ERR(iwm, "\tblink1: %d\n", le32_to_cpu(fw_err->blink1));
111 IWM_ERR(iwm, "\tblink2: %d\n", le32_to_cpu(fw_err->blink2));
112 IWM_ERR(iwm, "\tilink1: %d\n", le32_to_cpu(fw_err->ilink1));
113 IWM_ERR(iwm, "\tilink2: %d\n", le32_to_cpu(fw_err->ilink2));
114 IWM_ERR(iwm, "\tData1: 0x%x\n", le32_to_cpu(fw_err->data1));
115 IWM_ERR(iwm, "\tData2: 0x%x\n", le32_to_cpu(fw_err->data2));
116 IWM_ERR(iwm, "\tLine number: %d\n", le32_to_cpu(fw_err->line_num));
117 IWM_ERR(iwm, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err->umac_status));
118 IWM_ERR(iwm, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err->lmac_status));
119 IWM_ERR(iwm, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err->sdio_status));
126 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
127 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
129 struct iwm_umac_notif_alive *alive_resp =
130 (struct iwm_umac_notif_alive *)(buf);
131 u16 status = le16_to_cpu(alive_resp->status);
133 if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
134 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
138 iwm_tx_credit_init_pools(iwm, alive_resp);
143 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
144 unsigned long buf_size,
145 struct iwm_wifi_cmd *cmd)
147 struct wiphy *wiphy = iwm_to_wiphy(iwm);
148 struct iwm_umac_notif_init_complete *init_complete =
149 (struct iwm_umac_notif_init_complete *)(buf);
150 u16 status = le16_to_cpu(init_complete->status);
151 bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
154 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
156 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
158 wiphy_rfkill_set_hw_state(wiphy, blocked);
163 static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf,
164 unsigned long buf_size,
165 struct iwm_wifi_cmd *cmd)
167 int pool_nr, total_freed_pages;
168 unsigned long pool_map;
170 struct iwm_umac_notif_page_dealloc *dealloc =
171 (struct iwm_umac_notif_page_dealloc *)buf;
173 pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
174 pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
176 IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
177 "update map 0x%lx\n", pool_nr, pool_map);
179 spin_lock(&iwm->tx_credit.lock);
181 for (i = 0; i < pool_nr; i++) {
182 id = GET_VAL32(dealloc->grp_info[i],
183 UMAC_DEALLOC_NTFY_GROUP_NUM);
184 if (test_bit(id, &pool_map)) {
185 total_freed_pages = GET_VAL32(dealloc->grp_info[i],
186 UMAC_DEALLOC_NTFY_PAGE_CNT);
187 iwm_tx_credit_inc(iwm, id, total_freed_pages);
191 spin_unlock(&iwm->tx_credit.lock);
196 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
197 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
199 IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
204 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
205 unsigned long buf_size,
206 struct iwm_wifi_cmd *cmd)
208 IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
213 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
214 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
216 struct iwm_lmac_tx_resp *tx_resp;
217 struct iwm_umac_wifi_in_hdr *hdr;
219 tx_resp = (struct iwm_lmac_tx_resp *)
220 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
221 hdr = (struct iwm_umac_wifi_in_hdr *)buf;
223 IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
225 IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n",
226 le16_to_cpu(hdr->sw_hdr.cmd.seq_num));
227 IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt);
228 IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n",
229 le16_to_cpu(tx_resp->retry_cnt));
230 IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl));
231 IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n",
232 le16_to_cpu(tx_resp->byte_cnt));
233 IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status));
239 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
240 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
244 struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
245 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
247 opcode = hdr->opcode;
249 BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
250 opcode < PHY_CALIBRATE_OPCODES_NUM);
252 IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
255 buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
256 calib_buf = iwm->calib_res[opcode].buf;
258 if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
260 calib_buf = kzalloc(buf_size, GFP_KERNEL);
262 IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
265 iwm->calib_res[opcode].buf = calib_buf;
266 iwm->calib_res[opcode].size = buf_size;
269 memcpy(calib_buf, hdr, buf_size);
270 set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
275 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
276 unsigned long buf_size,
277 struct iwm_wifi_cmd *cmd)
279 IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
284 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
285 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
287 struct iwm_lmac_cal_cfg_resp *cal_resp;
289 cal_resp = (struct iwm_lmac_cal_cfg_resp *)
290 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
292 IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
293 le32_to_cpu(cal_resp->status));
298 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
299 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
301 struct iwm_umac_notif_wifi_status *status =
302 (struct iwm_umac_notif_wifi_status *)buf;
304 iwm->core_enabled |= le16_to_cpu(status->status);
309 static struct iwm_rx_ticket_node *
310 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
312 struct iwm_rx_ticket_node *ticket_node;
314 ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
316 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
317 return ERR_PTR(-ENOMEM);
320 ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL);
321 if (!ticket_node->ticket) {
322 IWM_ERR(iwm, "Couldn't allocate RX ticket\n");
324 return ERR_PTR(-ENOMEM);
327 memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
328 INIT_LIST_HEAD(&ticket_node->node);
333 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
335 kfree(ticket_node->ticket);
339 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
341 u8 id_hash = IWM_RX_ID_GET_HASH(id);
342 struct list_head *packet_list;
343 struct iwm_rx_packet *packet, *next;
345 packet_list = &iwm->rx_packets[id_hash];
347 list_for_each_entry_safe(packet, next, packet_list, 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 RELEASE(%d)\n",
425 list_add_tail(&ticket_node->node, &iwm->rx_tickets);
428 * We received an Rx ticket, most likely there's
429 * a packet pending for it, it's not worth going
430 * through the packet hash list to double check.
431 * Let's just fire the rx worker..
438 IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
446 queue_work(iwm->rx_wq, &iwm->rx_worker);
451 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
452 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
454 struct iwm_umac_wifi_in_hdr *wifi_hdr;
455 struct iwm_rx_packet *packet;
459 IWM_DBG_RX(iwm, DBG, "\n");
461 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
462 id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
463 buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
464 packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
466 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
467 wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
468 IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
469 IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
471 packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
473 return PTR_ERR(packet);
475 list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
477 /* We might (unlikely) have received the packet _after_ the ticket */
478 queue_work(iwm->rx_wq, &iwm->rx_worker);
484 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
485 unsigned long buf_size,
486 struct iwm_wifi_cmd *cmd)
488 struct iwm_umac_notif_assoc_start *start;
490 start = (struct iwm_umac_notif_assoc_start *)buf;
492 IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
493 start->bssid, le32_to_cpu(start->roam_reason));
495 wake_up_interruptible(&iwm->mlme_queue);
500 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
501 unsigned long buf_size,
502 struct iwm_wifi_cmd *cmd)
504 struct iwm_umac_notif_assoc_complete *complete =
505 (struct iwm_umac_notif_assoc_complete *)buf;
507 IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
508 complete->bssid, complete->status);
510 switch (le32_to_cpu(complete->status)) {
511 case UMAC_ASSOC_COMPLETE_SUCCESS:
512 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
513 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
514 iwm->channel = complete->channel;
516 /* Internal roaming state, avoid notifying SME. */
517 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
518 && iwm->conf.mode == UMAC_MODE_BSS) {
519 cancel_delayed_work(&iwm->disconnect);
520 cfg80211_roamed(iwm_to_ndev(iwm),
522 iwm->req_ie, iwm->req_ie_len,
523 iwm->resp_ie, iwm->resp_ie_len,
530 if (iwm->conf.mode == UMAC_MODE_IBSS)
533 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
534 cfg80211_connect_result(iwm_to_ndev(iwm),
536 iwm->req_ie, iwm->req_ie_len,
537 iwm->resp_ie, iwm->resp_ie_len,
541 cfg80211_roamed(iwm_to_ndev(iwm),
543 iwm->req_ie, iwm->req_ie_len,
544 iwm->resp_ie, iwm->resp_ie_len,
547 case UMAC_ASSOC_COMPLETE_FAILURE:
548 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
549 memset(iwm->bssid, 0, ETH_ALEN);
552 /* Internal roaming state, avoid notifying SME. */
553 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
554 && iwm->conf.mode == UMAC_MODE_BSS) {
555 cancel_delayed_work(&iwm->disconnect);
561 if (iwm->conf.mode == UMAC_MODE_IBSS)
564 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
565 cfg80211_connect_result(iwm_to_ndev(iwm),
568 WLAN_STATUS_UNSPECIFIED_FAILURE,
571 cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
578 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
582 cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
583 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
587 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
588 unsigned long buf_size,
589 struct iwm_wifi_cmd *cmd)
591 struct iwm_umac_notif_profile_invalidate *invalid;
594 invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
595 reason = le32_to_cpu(invalid->reason);
597 IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
599 if (reason != UMAC_PROFILE_INVALID_REQUEST &&
600 test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
601 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
602 0, WLAN_STATUS_UNSPECIFIED_FAILURE,
605 clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
606 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
608 iwm->umac_profile_active = 0;
609 memset(iwm->bssid, 0, ETH_ALEN);
614 wake_up_interruptible(&iwm->mlme_queue);
619 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
621 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
622 unsigned long buf_size,
623 struct iwm_wifi_cmd *cmd)
625 IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
627 schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
632 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
633 unsigned long buf_size,
634 struct iwm_wifi_cmd *cmd)
637 struct iwm_umac_notif_scan_complete *scan_complete =
638 (struct iwm_umac_notif_scan_complete *)buf;
639 u32 result = le32_to_cpu(scan_complete->result);
641 IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
642 le32_to_cpu(scan_complete->type),
643 le32_to_cpu(scan_complete->result),
644 scan_complete->seq_num);
646 if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
647 IWM_ERR(iwm, "Scan complete while device not scanning\n");
650 if (!iwm->scan_request)
653 ret = iwm_cfg80211_inform_bss(iwm);
655 cfg80211_scan_done(iwm->scan_request,
656 (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
657 iwm->scan_request = NULL;
662 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
663 unsigned long buf_size,
664 struct iwm_wifi_cmd *cmd)
666 struct iwm_umac_notif_sta_info *umac_sta =
667 (struct iwm_umac_notif_sta_info *)buf;
668 struct iwm_sta_info *sta;
671 switch (le32_to_cpu(umac_sta->opcode)) {
672 case UMAC_OPCODE_ADD_MODIFY:
673 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
675 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
676 "addr = %pM, qos = %d\n",
677 sta->valid ? "Modify" : "Add",
678 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
679 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
681 umac_sta->flags & UMAC_STA_FLAG_QOS);
684 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
685 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
686 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
688 case UMAC_OPCODE_REMOVE:
689 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
691 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
692 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
695 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
697 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
701 case UMAC_OPCODE_CLEAR_ALL:
702 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
703 iwm->sta_table[i].valid = 0;
713 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
714 unsigned long buf_size,
715 struct iwm_wifi_cmd *cmd)
717 struct wiphy *wiphy = iwm_to_wiphy(iwm);
718 struct ieee80211_mgmt *mgmt;
719 struct iwm_umac_notif_bss_info *umac_bss =
720 (struct iwm_umac_notif_bss_info *)buf;
721 struct ieee80211_channel *channel;
722 struct ieee80211_supported_band *band;
723 struct iwm_bss_info *bss, *next;
726 u16 frame_len = le16_to_cpu(umac_bss->frame_len);
727 size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
729 mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
731 IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
732 IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
733 IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
734 le32_to_cpu(umac_bss->timestamp));
735 IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
736 le16_to_cpu(umac_bss->table_idx));
737 IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
738 IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
739 IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
740 IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
742 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
743 if (bss->bss->table_idx == umac_bss->table_idx)
746 if (&bss->node != &iwm->bss_list) {
747 /* Remove the old BSS entry, we will add it back later. */
748 list_del(&bss->node);
753 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
755 IWM_ERR(iwm, "Couldn't allocate bss_info\n");
760 bss->bss = kzalloc(bss_len, GFP_KERNEL);
763 IWM_ERR(iwm, "Couldn't allocate bss\n");
767 INIT_LIST_HEAD(&bss->node);
768 memcpy(bss->bss, umac_bss, bss_len);
770 if (umac_bss->band == UMAC_BAND_2GHZ)
771 band = wiphy->bands[IEEE80211_BAND_2GHZ];
772 else if (umac_bss->band == UMAC_BAND_5GHZ)
773 band = wiphy->bands[IEEE80211_BAND_5GHZ];
775 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
779 freq = ieee80211_channel_to_frequency(umac_bss->channel);
780 channel = ieee80211_get_channel(wiphy, freq);
781 signal = umac_bss->rssi * 100;
783 bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
789 list_add_tail(&bss->node, &iwm->bss_list);
799 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
800 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
802 struct iwm_umac_notif_bss_removed *bss_rm =
803 (struct iwm_umac_notif_bss_removed *)buf;
804 struct iwm_bss_info *bss, *next;
808 for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
809 table_idx = (le16_to_cpu(bss_rm->entries[i])
810 & IWM_BSS_REMOVE_INDEX_MSK);
811 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
812 if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
813 struct ieee80211_mgmt *mgmt;
815 mgmt = (struct ieee80211_mgmt *)
816 (bss->bss->frame_buf);
817 IWM_DBG_MLME(iwm, ERR,
818 "BSS removed: %pM\n",
820 list_del(&bss->node);
829 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
830 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
832 struct iwm_umac_notif_mgt_frame *mgt_frame =
833 (struct iwm_umac_notif_mgt_frame *)buf;
834 struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
837 IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
838 le16_to_cpu(mgt_frame->len));
840 if (ieee80211_is_assoc_req(mgt->frame_control)) {
841 ie = mgt->u.assoc_req.variable;;
843 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
845 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
846 iwm->req_ie_len, GFP_KERNEL);
847 } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
848 ie = mgt->u.reassoc_req.variable;;
850 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
852 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
853 iwm->req_ie_len, GFP_KERNEL);
854 } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
855 ie = mgt->u.assoc_resp.variable;;
857 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
859 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
860 iwm->resp_ie_len, GFP_KERNEL);
861 } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
862 ie = mgt->u.reassoc_resp.variable;;
864 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
866 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
867 iwm->resp_ie_len, GFP_KERNEL);
869 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
870 le16_to_cpu(mgt->frame_control));
877 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
878 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
880 struct iwm_umac_notif_wifi_if *notif =
881 (struct iwm_umac_notif_wifi_if *)buf;
883 switch (notif->status) {
884 case WIFI_IF_NTFY_ASSOC_START:
885 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
886 case WIFI_IF_NTFY_ASSOC_COMPLETE:
887 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
888 case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
889 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
890 case WIFI_IF_NTFY_CONNECTION_TERMINATED:
891 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
892 case WIFI_IF_NTFY_SCAN_COMPLETE:
893 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
894 case WIFI_IF_NTFY_STA_TABLE_CHANGE:
895 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
896 case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
897 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
899 case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
900 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
901 case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
902 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
904 case WIFI_IF_NTFY_MGMT_FRAME:
905 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
906 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
907 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
908 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
909 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
910 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
911 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
912 case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
913 case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
914 case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
915 case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
916 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
920 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
927 #define IWM_STATS_UPDATE_INTERVAL (2 * HZ)
929 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
930 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
932 struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
933 struct iw_statistics *wstats = &iwm->wstats;
937 IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
939 if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
940 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
941 max_rate = max_t(u16, max_rate,
942 max(le16_to_cpu(stats->tx_rate[i]),
943 le16_to_cpu(stats->rx_rate[i])));
945 /* UMAC passes rate info multiplies by 2 */
946 iwm->rate = max_rate >> 1;
948 iwm->txpower = le32_to_cpu(stats->tx_power);
952 wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
953 wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
954 wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
955 wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
957 wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
959 /* according to cfg80211 */
960 if (stats->rssi_dbm < -110)
961 wstats->qual.qual = 0;
962 else if (stats->rssi_dbm > -40)
963 wstats->qual.qual = 70;
965 wstats->qual.qual = stats->rssi_dbm + 110;
967 wstats->qual.level = stats->rssi_dbm;
968 wstats->qual.noise = stats->noise_dbm;
969 wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
971 schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
973 mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
978 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
979 unsigned long buf_size,
980 struct iwm_wifi_cmd *cmd)
982 struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
983 (struct iwm_umac_cmd_eeprom_proxy *)
984 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
985 struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
986 u32 hdr_offset = le32_to_cpu(hdr->offset);
987 u32 hdr_len = le32_to_cpu(hdr->len);
988 u32 hdr_type = le32_to_cpu(hdr->type);
990 IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
991 hdr_type, hdr_len, hdr_offset);
993 if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
997 case IWM_UMAC_CMD_EEPROM_TYPE_READ:
998 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1000 case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1008 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1009 unsigned long buf_size,
1010 struct iwm_wifi_cmd *cmd)
1012 struct iwm_umac_cmd_get_channel_list *ch_list =
1013 (struct iwm_umac_cmd_get_channel_list *)
1014 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1015 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1016 struct ieee80211_supported_band *band;
1019 band = wiphy->bands[IEEE80211_BAND_2GHZ];
1021 for (i = 0; i < band->n_channels; i++) {
1022 unsigned long ch_mask_0 =
1023 le32_to_cpu(ch_list->ch[0].channels_mask);
1024 unsigned long ch_mask_2 =
1025 le32_to_cpu(ch_list->ch[2].channels_mask);
1027 if (!test_bit(i, &ch_mask_0))
1028 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1030 if (!test_bit(i, &ch_mask_2))
1031 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1034 band = wiphy->bands[IEEE80211_BAND_5GHZ];
1036 for (i = 0; i < min(band->n_channels, 32); i++) {
1037 unsigned long ch_mask_1 =
1038 le32_to_cpu(ch_list->ch[1].channels_mask);
1039 unsigned long ch_mask_3 =
1040 le32_to_cpu(ch_list->ch[3].channels_mask);
1042 if (!test_bit(i, &ch_mask_1))
1043 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1045 if (!test_bit(i, &ch_mask_3))
1046 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1052 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1053 unsigned long buf_size,
1054 struct iwm_wifi_cmd *cmd)
1056 struct iwm_umac_wifi_if *hdr =
1057 (struct iwm_umac_wifi_if *)cmd->buf.payload;
1059 IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1060 "oid is 0x%x\n", hdr->oid);
1062 if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1063 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1064 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1069 case UMAC_WIFI_IF_CMD_SET_PROFILE:
1070 iwm->umac_profile_active = 1;
1079 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1080 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1082 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1083 struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1084 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1085 u32 flags = le32_to_cpu(state->flags);
1087 IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1088 flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1089 flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1091 wiphy_rfkill_set_hw_state(wiphy, flags & IWM_CARD_STATE_HW_DISABLED);
1096 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1097 unsigned long buf_size)
1099 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1100 struct iwm_wifi_cmd *cmd;
1106 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1107 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1109 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1110 if (source >= IWM_SRC_NUM) {
1111 IWM_CRIT(iwm, "invalid source %d\n", source);
1115 count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1116 count += sizeof(struct iwm_umac_wifi_in_hdr) -
1117 sizeof(struct iwm_dev_cmd_hdr);
1118 if (count > buf_size) {
1119 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1123 resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1125 seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1127 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1128 cmd_id, source, seq_num);
1131 * If this is a response to a previously sent command, there must
1132 * be a pending command for this sequence number.
1134 cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1136 /* Notify the caller only for sync commands. */
1138 case UMAC_HDI_IN_SOURCE_FHRX:
1139 if (iwm->lmac_handlers[cmd_id] &&
1140 test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1141 return iwm_notif_send(iwm, cmd, cmd_id, source,
1144 case UMAC_HDI_IN_SOURCE_FW:
1145 if (iwm->umac_handlers[cmd_id] &&
1146 test_bit(cmd_id, &iwm->umac_handler_map[0]))
1147 return iwm_notif_send(iwm, cmd, cmd_id, source,
1150 case UMAC_HDI_IN_SOURCE_UDMA:
1154 return iwm_rx_handle_resp(iwm, buf, count, cmd);
1157 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1158 struct iwm_wifi_cmd *cmd)
1161 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1164 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1165 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1167 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1169 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1172 case UMAC_HDI_IN_SOURCE_FHRX:
1173 if (iwm->lmac_handlers[cmd_id])
1174 ret = iwm->lmac_handlers[cmd_id]
1175 (iwm, buf, buf_size, cmd);
1177 case UMAC_HDI_IN_SOURCE_FW:
1178 if (iwm->umac_handlers[cmd_id])
1179 ret = iwm->umac_handlers[cmd_id]
1180 (iwm, buf, buf_size, cmd);
1182 case UMAC_HDI_IN_SOURCE_UDMA:
1192 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1193 unsigned long buf_size)
1196 struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1197 struct iwm_nonwifi_cmd *cmd, *next;
1199 seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1202 * We received a non wifi answer.
1203 * Let's check if there's a pending command for it, and if so
1204 * replace the command payload with the buffer, and then wake the
1206 * That means we only support synchronised non wifi command response
1209 list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1210 if (cmd->seq_num == seq_num) {
1211 cmd->resp_received = 1;
1212 cmd->buf.len = buf_size;
1213 memcpy(cmd->buf.hdr, buf, buf_size);
1214 wake_up_interruptible(&iwm->nonwifi_queue);
1220 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1221 unsigned long buf_size)
1225 unsigned long buf_offset = 0;
1226 struct iwm_udma_in_hdr *hdr;
1229 * To allow for a more efficient bus usage, UMAC
1230 * messages are encapsulated into UDMA ones. This
1231 * way we can have several UMAC messages in one bus
1233 * A UDMA frame size is always aligned on 16 bytes,
1234 * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1235 * word. This is how we parse a bus frame into several
1238 while (buf_offset < buf_size) {
1240 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1242 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1243 IWM_DBG_RX(iwm, DBG, "End of frame\n");
1247 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1249 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1251 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1252 ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1253 buf_size - buf_offset);
1254 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1255 if (GET_VAL32(hdr->cmd,
1256 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1257 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1258 IWM_ERR(iwm, "Incorrect hw signature\n");
1261 ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1262 buf_size - buf_offset);
1264 IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1268 buf_offset += iwm_rx_resp_size(hdr);
1274 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1276 struct iwm_udma_in_hdr *hdr;
1278 hdr = (struct iwm_udma_in_hdr *)buf;
1280 switch (le32_to_cpu(hdr->cmd)) {
1281 case UMAC_REBOOT_BARKER:
1282 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1283 IWM_SRC_UDMA, buf, buf_size);
1284 case UMAC_ACK_BARKER:
1285 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1286 IWM_SRC_UDMA, NULL, 0);
1288 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1289 return iwm_rx_handle_umac(iwm, buf, buf_size);
1295 static const iwm_handler iwm_umac_handlers[] =
1297 [UMAC_NOTIFY_OPCODE_ERROR] = iwm_ntf_error,
1298 [UMAC_NOTIFY_OPCODE_ALIVE] = iwm_ntf_umac_alive,
1299 [UMAC_NOTIFY_OPCODE_INIT_COMPLETE] = iwm_ntf_init_complete,
1300 [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS] = iwm_ntf_wifi_status,
1301 [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_mlme,
1302 [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC] = iwm_ntf_tx_credit_update,
1303 [UMAC_NOTIFY_OPCODE_RX_TICKET] = iwm_ntf_rx_ticket,
1304 [UMAC_CMD_OPCODE_RESET] = iwm_ntf_umac_reset,
1305 [UMAC_NOTIFY_OPCODE_STATS] = iwm_ntf_statistics,
1306 [UMAC_CMD_OPCODE_EEPROM_PROXY] = iwm_ntf_eeprom_proxy,
1307 [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST] = iwm_ntf_channel_info_list,
1308 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1309 [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_wifi_if_wrapper,
1312 static const iwm_handler iwm_lmac_handlers[] =
1314 [REPLY_TX] = iwm_ntf_tx,
1315 [REPLY_ALIVE] = iwm_ntf_lmac_version,
1316 [CALIBRATION_RES_NOTIFICATION] = iwm_ntf_calib_res,
1317 [CALIBRATION_COMPLETE_NOTIFICATION] = iwm_ntf_calib_complete,
1318 [CALIBRATION_CFG_CMD] = iwm_ntf_calib_cfg,
1319 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1320 [CARD_STATE_NOTIFICATION] = iwm_ntf_card_state,
1323 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1325 iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1326 iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1329 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1331 struct ieee80211_hdr *hdr;
1332 unsigned int hdr_len;
1334 hdr = (struct ieee80211_hdr *)skb->data;
1336 if (!ieee80211_has_protected(hdr->frame_control))
1339 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1340 if (hdr_total_len <= hdr_len)
1343 memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1344 skb_pull(skb, (hdr_total_len - hdr_len));
1347 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1348 struct iwm_rx_packet *packet,
1349 struct iwm_rx_ticket_node *ticket_node)
1351 u32 payload_offset = 0, payload_len;
1352 struct iwm_rx_ticket *ticket = ticket_node->ticket;
1353 struct iwm_rx_mpdu_hdr *mpdu_hdr;
1354 struct ieee80211_hdr *hdr;
1356 mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1357 payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1358 /* Padding is 0 or 2 bytes */
1359 payload_len = le16_to_cpu(mpdu_hdr->len) +
1360 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1361 payload_len -= ticket->tail_len;
1363 IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1364 "ticket offset:%d ticket tail len:%d\n",
1365 payload_len, payload_offset, ticket->payload_offset,
1368 IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1370 skb_pull(packet->skb, payload_offset);
1371 skb_trim(packet->skb, payload_len);
1373 iwm_remove_iv(packet->skb, ticket->payload_offset);
1375 hdr = (struct ieee80211_hdr *) packet->skb->data;
1376 if (ieee80211_is_data_qos(hdr->frame_control)) {
1377 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1378 * to the qos_ctl field in IEEE 802.11 headers. */
1379 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1381 ieee80211_hdrlen(hdr->frame_control) -
1382 IEEE80211_QOS_CTL_LEN);
1383 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1384 IEEE80211_QOS_CTL_LEN + 2);
1385 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1388 IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1389 packet->skb->data, packet->skb->len);
1392 static void classify8023(struct sk_buff *skb)
1394 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1396 if (ieee80211_is_data_qos(hdr->frame_control)) {
1397 u8 *qc = ieee80211_get_qos_ctl(hdr);
1398 /* frame has qos control */
1399 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1405 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1406 struct iwm_rx_packet *packet,
1407 struct iwm_rx_ticket_node *ticket_node)
1410 struct sk_buff *skb = packet->skb;
1411 struct wireless_dev *wdev = iwm_to_wdev(iwm);
1412 struct net_device *ndev = iwm_to_ndev(iwm);
1414 IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1416 switch (le16_to_cpu(ticket_node->ticket->action)) {
1417 case IWM_RX_TICKET_RELEASE:
1418 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1420 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1421 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1423 IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1428 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1430 skb->dev = iwm_to_ndev(iwm);
1431 skb->protocol = eth_type_trans(skb, ndev);
1432 skb->ip_summed = CHECKSUM_NONE;
1433 memset(skb->cb, 0, sizeof(skb->cb));
1435 ndev->stats.rx_packets++;
1436 ndev->stats.rx_bytes += skb->len;
1438 if (netif_rx_ni(skb) == NET_RX_DROP) {
1439 IWM_ERR(iwm, "Packet dropped\n");
1440 ndev->stats.rx_dropped++;
1443 case IWM_RX_TICKET_DROP:
1444 IWM_DBG_RX(iwm, DBG, "DROP packet\n");
1445 kfree_skb(packet->skb);
1448 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1449 le16_to_cpu(ticket_node->ticket->action));
1450 kfree_skb(packet->skb);
1454 iwm_rx_ticket_node_free(ticket_node);
1458 * Rx data processing:
1460 * We're receiving Rx packet from the LMAC, and Rx ticket from
1462 * To forward a target data packet upstream (i.e. to the
1463 * kernel network stack), we must have received an Rx ticket
1464 * that tells us we're allowed to release this packet (ticket
1465 * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1466 * among other things, where valid data actually starts in the Rx
1469 void iwm_rx_worker(struct work_struct *work)
1471 struct iwm_priv *iwm;
1472 struct iwm_rx_ticket_node *ticket, *next;
1474 iwm = container_of(work, struct iwm_priv, rx_worker);
1477 * We go through the tickets list and if there is a pending
1478 * packet for it, we push it upstream.
1479 * We stop whenever a ticket is missing its packet, as we're
1480 * supposed to send the packets in order.
1482 list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1483 struct iwm_rx_packet *packet =
1484 iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1487 IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1488 "to be handled first\n",
1489 le16_to_cpu(ticket->ticket->id));
1493 list_del(&ticket->node);
1494 list_del(&packet->node);
1495 iwm_rx_process_packet(iwm, packet, ticket);