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 memcpy(iwm->last_fw_err, fw_err, sizeof(struct iwm_fw_error_hdr));
107 IWM_ERR(iwm, "%cMAC FW ERROR:\n",
108 (le32_to_cpu(fw_err->category) == UMAC_SYS_ERR_CAT_LMAC) ? 'L' : 'U');
109 IWM_ERR(iwm, "\tCategory: %d\n", le32_to_cpu(fw_err->category));
110 IWM_ERR(iwm, "\tStatus: 0x%x\n", le32_to_cpu(fw_err->status));
111 IWM_ERR(iwm, "\tPC: 0x%x\n", le32_to_cpu(fw_err->pc));
112 IWM_ERR(iwm, "\tblink1: %d\n", le32_to_cpu(fw_err->blink1));
113 IWM_ERR(iwm, "\tblink2: %d\n", le32_to_cpu(fw_err->blink2));
114 IWM_ERR(iwm, "\tilink1: %d\n", le32_to_cpu(fw_err->ilink1));
115 IWM_ERR(iwm, "\tilink2: %d\n", le32_to_cpu(fw_err->ilink2));
116 IWM_ERR(iwm, "\tData1: 0x%x\n", le32_to_cpu(fw_err->data1));
117 IWM_ERR(iwm, "\tData2: 0x%x\n", le32_to_cpu(fw_err->data2));
118 IWM_ERR(iwm, "\tLine number: %d\n", le32_to_cpu(fw_err->line_num));
119 IWM_ERR(iwm, "\tUMAC status: 0x%x\n", le32_to_cpu(fw_err->umac_status));
120 IWM_ERR(iwm, "\tLMAC status: 0x%x\n", le32_to_cpu(fw_err->lmac_status));
121 IWM_ERR(iwm, "\tSDIO status: 0x%x\n", le32_to_cpu(fw_err->sdio_status));
128 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
129 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
131 struct iwm_umac_notif_alive *alive_resp =
132 (struct iwm_umac_notif_alive *)(buf);
133 u16 status = le16_to_cpu(alive_resp->status);
135 if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
136 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
140 iwm_tx_credit_init_pools(iwm, alive_resp);
145 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
146 unsigned long buf_size,
147 struct iwm_wifi_cmd *cmd)
149 struct wiphy *wiphy = iwm_to_wiphy(iwm);
150 struct iwm_umac_notif_init_complete *init_complete =
151 (struct iwm_umac_notif_init_complete *)(buf);
152 u16 status = le16_to_cpu(init_complete->status);
153 bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
156 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
158 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
160 wiphy_rfkill_set_hw_state(wiphy, blocked);
165 static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf,
166 unsigned long buf_size,
167 struct iwm_wifi_cmd *cmd)
169 int pool_nr, total_freed_pages;
170 unsigned long pool_map;
172 struct iwm_umac_notif_page_dealloc *dealloc =
173 (struct iwm_umac_notif_page_dealloc *)buf;
175 pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
176 pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
178 IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
179 "update map 0x%lx\n", pool_nr, pool_map);
181 spin_lock(&iwm->tx_credit.lock);
183 for (i = 0; i < pool_nr; i++) {
184 id = GET_VAL32(dealloc->grp_info[i],
185 UMAC_DEALLOC_NTFY_GROUP_NUM);
186 if (test_bit(id, &pool_map)) {
187 total_freed_pages = GET_VAL32(dealloc->grp_info[i],
188 UMAC_DEALLOC_NTFY_PAGE_CNT);
189 iwm_tx_credit_inc(iwm, id, total_freed_pages);
193 spin_unlock(&iwm->tx_credit.lock);
198 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
199 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
201 IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
206 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
207 unsigned long buf_size,
208 struct iwm_wifi_cmd *cmd)
210 IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
215 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
216 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
218 struct iwm_lmac_tx_resp *tx_resp;
219 struct iwm_umac_wifi_in_hdr *hdr;
221 tx_resp = (struct iwm_lmac_tx_resp *)
222 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
223 hdr = (struct iwm_umac_wifi_in_hdr *)buf;
225 IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
227 IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n",
228 le16_to_cpu(hdr->sw_hdr.cmd.seq_num));
229 IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt);
230 IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n",
231 le16_to_cpu(tx_resp->retry_cnt));
232 IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl));
233 IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n",
234 le16_to_cpu(tx_resp->byte_cnt));
235 IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status));
241 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
242 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
246 struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
247 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
249 opcode = hdr->opcode;
251 BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
252 opcode < PHY_CALIBRATE_OPCODES_NUM);
254 IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
257 buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
258 calib_buf = iwm->calib_res[opcode].buf;
260 if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
262 calib_buf = kzalloc(buf_size, GFP_KERNEL);
264 IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
267 iwm->calib_res[opcode].buf = calib_buf;
268 iwm->calib_res[opcode].size = buf_size;
271 memcpy(calib_buf, hdr, buf_size);
272 set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
277 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
278 unsigned long buf_size,
279 struct iwm_wifi_cmd *cmd)
281 IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
286 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
287 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
289 struct iwm_lmac_cal_cfg_resp *cal_resp;
291 cal_resp = (struct iwm_lmac_cal_cfg_resp *)
292 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
294 IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
295 le32_to_cpu(cal_resp->status));
300 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
301 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
303 struct iwm_umac_notif_wifi_status *status =
304 (struct iwm_umac_notif_wifi_status *)buf;
306 iwm->core_enabled |= le16_to_cpu(status->status);
311 static struct iwm_rx_ticket_node *
312 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
314 struct iwm_rx_ticket_node *ticket_node;
316 ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
318 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
319 return ERR_PTR(-ENOMEM);
322 ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL);
323 if (!ticket_node->ticket) {
324 IWM_ERR(iwm, "Couldn't allocate RX ticket\n");
326 return ERR_PTR(-ENOMEM);
329 memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
330 INIT_LIST_HEAD(&ticket_node->node);
335 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
337 kfree(ticket_node->ticket);
341 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
343 u8 id_hash = IWM_RX_ID_GET_HASH(id);
344 struct list_head *packet_list;
345 struct iwm_rx_packet *packet, *next;
347 packet_list = &iwm->rx_packets[id_hash];
349 list_for_each_entry_safe(packet, next, packet_list, node)
350 if (packet->id == id)
356 static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf,
359 struct iwm_rx_packet *packet;
361 packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL);
363 IWM_ERR(iwm, "Couldn't allocate packet\n");
364 return ERR_PTR(-ENOMEM);
367 packet->skb = dev_alloc_skb(size);
369 IWM_ERR(iwm, "Couldn't allocate packet SKB\n");
371 return ERR_PTR(-ENOMEM);
374 packet->pkt_size = size;
376 skb_put(packet->skb, size);
377 memcpy(packet->skb->data, buf, size);
378 INIT_LIST_HEAD(&packet->node);
384 void iwm_rx_free(struct iwm_priv *iwm)
386 struct iwm_rx_ticket_node *ticket, *nt;
387 struct iwm_rx_packet *packet, *np;
390 list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) {
391 list_del(&ticket->node);
392 iwm_rx_ticket_node_free(ticket);
395 for (i = 0; i < IWM_RX_ID_HASH; i++) {
396 list_for_each_entry_safe(packet, np, &iwm->rx_packets[i],
398 list_del(&packet->node);
399 kfree_skb(packet->skb);
405 static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
406 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
408 struct iwm_umac_notif_rx_ticket *ntf_rx_ticket =
409 (struct iwm_umac_notif_rx_ticket *)buf;
410 struct iwm_rx_ticket *ticket =
411 (struct iwm_rx_ticket *)ntf_rx_ticket->tickets;
412 int i, schedule_rx = 0;
414 for (i = 0; i < ntf_rx_ticket->num_tickets; i++) {
415 struct iwm_rx_ticket_node *ticket_node;
417 switch (le16_to_cpu(ticket->action)) {
418 case IWM_RX_TICKET_RELEASE:
419 case IWM_RX_TICKET_DROP:
420 /* We can push the packet to the stack */
421 ticket_node = iwm_rx_ticket_node_alloc(iwm, ticket);
422 if (IS_ERR(ticket_node))
423 return PTR_ERR(ticket_node);
425 IWM_DBG_RX(iwm, DBG, "TICKET %s(%d)\n",
426 ticket->action == IWM_RX_TICKET_RELEASE ?
429 list_add_tail(&ticket_node->node, &iwm->rx_tickets);
432 * We received an Rx ticket, most likely there's
433 * a packet pending for it, it's not worth going
434 * through the packet hash list to double check.
435 * Let's just fire the rx worker..
442 IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
450 queue_work(iwm->rx_wq, &iwm->rx_worker);
455 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
456 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
458 struct iwm_umac_wifi_in_hdr *wifi_hdr;
459 struct iwm_rx_packet *packet;
463 IWM_DBG_RX(iwm, DBG, "\n");
465 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
466 id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
467 buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
468 packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
470 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
471 wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
472 IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
473 IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
475 packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
477 return PTR_ERR(packet);
479 list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
481 /* We might (unlikely) have received the packet _after_ the ticket */
482 queue_work(iwm->rx_wq, &iwm->rx_worker);
488 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
489 unsigned long buf_size,
490 struct iwm_wifi_cmd *cmd)
492 struct iwm_umac_notif_assoc_start *start;
494 start = (struct iwm_umac_notif_assoc_start *)buf;
496 IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
497 start->bssid, le32_to_cpu(start->roam_reason));
499 wake_up_interruptible(&iwm->mlme_queue);
504 static u8 iwm_is_open_wep_profile(struct iwm_priv *iwm)
506 if ((iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_40 ||
507 iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_104) &&
508 (iwm->umac_profile->sec.ucast_cipher ==
509 iwm->umac_profile->sec.mcast_cipher) &&
510 (iwm->umac_profile->sec.auth_type == UMAC_AUTH_TYPE_OPEN))
516 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
517 unsigned long buf_size,
518 struct iwm_wifi_cmd *cmd)
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 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
529 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
530 iwm->channel = complete->channel;
532 /* Internal roaming state, avoid notifying SME. */
533 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
534 && iwm->conf.mode == UMAC_MODE_BSS) {
535 cancel_delayed_work(&iwm->disconnect);
536 cfg80211_roamed(iwm_to_ndev(iwm),
538 iwm->req_ie, iwm->req_ie_len,
539 iwm->resp_ie, iwm->resp_ie_len,
546 if (iwm->conf.mode == UMAC_MODE_IBSS)
549 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
550 cfg80211_connect_result(iwm_to_ndev(iwm),
552 iwm->req_ie, iwm->req_ie_len,
553 iwm->resp_ie, iwm->resp_ie_len,
557 cfg80211_roamed(iwm_to_ndev(iwm),
559 iwm->req_ie, iwm->req_ie_len,
560 iwm->resp_ie, iwm->resp_ie_len,
563 case UMAC_ASSOC_COMPLETE_FAILURE:
564 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
565 memset(iwm->bssid, 0, ETH_ALEN);
568 /* Internal roaming state, avoid notifying SME. */
569 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
570 && iwm->conf.mode == UMAC_MODE_BSS) {
571 cancel_delayed_work(&iwm->disconnect);
577 if (iwm->conf.mode == UMAC_MODE_IBSS)
580 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
581 if (!iwm_is_open_wep_profile(iwm)) {
582 cfg80211_connect_result(iwm_to_ndev(iwm),
585 WLAN_STATUS_UNSPECIFIED_FAILURE,
588 /* Let's try shared WEP auth */
589 IWM_ERR(iwm, "Trying WEP shared auth\n");
590 schedule_work(&iwm->auth_retry_worker);
593 cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
600 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
604 cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
605 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
609 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
610 unsigned long buf_size,
611 struct iwm_wifi_cmd *cmd)
613 struct iwm_umac_notif_profile_invalidate *invalid;
616 invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
617 reason = le32_to_cpu(invalid->reason);
619 IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
621 if (reason != UMAC_PROFILE_INVALID_REQUEST &&
622 test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
623 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
624 0, WLAN_STATUS_UNSPECIFIED_FAILURE,
627 clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
628 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
630 iwm->umac_profile_active = 0;
631 memset(iwm->bssid, 0, ETH_ALEN);
636 wake_up_interruptible(&iwm->mlme_queue);
641 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
643 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
644 unsigned long buf_size,
645 struct iwm_wifi_cmd *cmd)
647 IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
649 schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
654 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
655 unsigned long buf_size,
656 struct iwm_wifi_cmd *cmd)
659 struct iwm_umac_notif_scan_complete *scan_complete =
660 (struct iwm_umac_notif_scan_complete *)buf;
661 u32 result = le32_to_cpu(scan_complete->result);
663 IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
664 le32_to_cpu(scan_complete->type),
665 le32_to_cpu(scan_complete->result),
666 scan_complete->seq_num);
668 if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
669 IWM_ERR(iwm, "Scan complete while device not scanning\n");
672 if (!iwm->scan_request)
675 ret = iwm_cfg80211_inform_bss(iwm);
677 cfg80211_scan_done(iwm->scan_request,
678 (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
679 iwm->scan_request = NULL;
684 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
685 unsigned long buf_size,
686 struct iwm_wifi_cmd *cmd)
688 struct iwm_umac_notif_sta_info *umac_sta =
689 (struct iwm_umac_notif_sta_info *)buf;
690 struct iwm_sta_info *sta;
693 switch (le32_to_cpu(umac_sta->opcode)) {
694 case UMAC_OPCODE_ADD_MODIFY:
695 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
697 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
698 "addr = %pM, qos = %d\n",
699 sta->valid ? "Modify" : "Add",
700 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
701 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
703 umac_sta->flags & UMAC_STA_FLAG_QOS);
706 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
707 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
708 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
710 case UMAC_OPCODE_REMOVE:
711 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
713 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
714 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
717 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
719 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
723 case UMAC_OPCODE_CLEAR_ALL:
724 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
725 iwm->sta_table[i].valid = 0;
735 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
736 unsigned long buf_size,
737 struct iwm_wifi_cmd *cmd)
739 struct wiphy *wiphy = iwm_to_wiphy(iwm);
740 struct ieee80211_mgmt *mgmt;
741 struct iwm_umac_notif_bss_info *umac_bss =
742 (struct iwm_umac_notif_bss_info *)buf;
743 struct ieee80211_channel *channel;
744 struct ieee80211_supported_band *band;
745 struct iwm_bss_info *bss, *next;
748 u16 frame_len = le16_to_cpu(umac_bss->frame_len);
749 size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
751 mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
753 IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
754 IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
755 IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
756 le32_to_cpu(umac_bss->timestamp));
757 IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
758 le16_to_cpu(umac_bss->table_idx));
759 IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
760 IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
761 IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
762 IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
764 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
765 if (bss->bss->table_idx == umac_bss->table_idx)
768 if (&bss->node != &iwm->bss_list) {
769 /* Remove the old BSS entry, we will add it back later. */
770 list_del(&bss->node);
775 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
777 IWM_ERR(iwm, "Couldn't allocate bss_info\n");
782 bss->bss = kzalloc(bss_len, GFP_KERNEL);
785 IWM_ERR(iwm, "Couldn't allocate bss\n");
789 INIT_LIST_HEAD(&bss->node);
790 memcpy(bss->bss, umac_bss, bss_len);
792 if (umac_bss->band == UMAC_BAND_2GHZ)
793 band = wiphy->bands[IEEE80211_BAND_2GHZ];
794 else if (umac_bss->band == UMAC_BAND_5GHZ)
795 band = wiphy->bands[IEEE80211_BAND_5GHZ];
797 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
801 freq = ieee80211_channel_to_frequency(umac_bss->channel);
802 channel = ieee80211_get_channel(wiphy, freq);
803 signal = umac_bss->rssi * 100;
805 bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
811 list_add_tail(&bss->node, &iwm->bss_list);
821 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
822 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
824 struct iwm_umac_notif_bss_removed *bss_rm =
825 (struct iwm_umac_notif_bss_removed *)buf;
826 struct iwm_bss_info *bss, *next;
830 for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
831 table_idx = (le16_to_cpu(bss_rm->entries[i])
832 & IWM_BSS_REMOVE_INDEX_MSK);
833 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
834 if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
835 struct ieee80211_mgmt *mgmt;
837 mgmt = (struct ieee80211_mgmt *)
838 (bss->bss->frame_buf);
839 IWM_DBG_MLME(iwm, ERR,
840 "BSS removed: %pM\n",
842 list_del(&bss->node);
851 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
852 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
854 struct iwm_umac_notif_mgt_frame *mgt_frame =
855 (struct iwm_umac_notif_mgt_frame *)buf;
856 struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
859 IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
860 le16_to_cpu(mgt_frame->len));
862 if (ieee80211_is_assoc_req(mgt->frame_control)) {
863 ie = mgt->u.assoc_req.variable;;
865 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
867 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
868 iwm->req_ie_len, GFP_KERNEL);
869 } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
870 ie = mgt->u.reassoc_req.variable;;
872 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
874 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
875 iwm->req_ie_len, GFP_KERNEL);
876 } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
877 ie = mgt->u.assoc_resp.variable;;
879 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
881 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
882 iwm->resp_ie_len, GFP_KERNEL);
883 } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
884 ie = mgt->u.reassoc_resp.variable;;
886 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
888 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
889 iwm->resp_ie_len, GFP_KERNEL);
891 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
892 le16_to_cpu(mgt->frame_control));
899 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
900 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
902 struct iwm_umac_notif_wifi_if *notif =
903 (struct iwm_umac_notif_wifi_if *)buf;
905 switch (notif->status) {
906 case WIFI_IF_NTFY_ASSOC_START:
907 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
908 case WIFI_IF_NTFY_ASSOC_COMPLETE:
909 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
910 case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
911 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
912 case WIFI_IF_NTFY_CONNECTION_TERMINATED:
913 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
914 case WIFI_IF_NTFY_SCAN_COMPLETE:
915 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
916 case WIFI_IF_NTFY_STA_TABLE_CHANGE:
917 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
918 case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
919 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
921 case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
922 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
923 case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
924 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
926 case WIFI_IF_NTFY_MGMT_FRAME:
927 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
928 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
929 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
930 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
931 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
932 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
933 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
934 case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
935 case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
936 case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
937 case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
938 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
942 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
949 #define IWM_STATS_UPDATE_INTERVAL (2 * HZ)
951 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
952 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
954 struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
955 struct iw_statistics *wstats = &iwm->wstats;
959 IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
961 if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
962 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
963 max_rate = max_t(u16, max_rate,
964 max(le16_to_cpu(stats->tx_rate[i]),
965 le16_to_cpu(stats->rx_rate[i])));
967 /* UMAC passes rate info multiplies by 2 */
968 iwm->rate = max_rate >> 1;
970 iwm->txpower = le32_to_cpu(stats->tx_power);
974 wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
975 wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
976 wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
977 wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
979 wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
981 /* according to cfg80211 */
982 if (stats->rssi_dbm < -110)
983 wstats->qual.qual = 0;
984 else if (stats->rssi_dbm > -40)
985 wstats->qual.qual = 70;
987 wstats->qual.qual = stats->rssi_dbm + 110;
989 wstats->qual.level = stats->rssi_dbm;
990 wstats->qual.noise = stats->noise_dbm;
991 wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
993 schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
995 mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
1000 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
1001 unsigned long buf_size,
1002 struct iwm_wifi_cmd *cmd)
1004 struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
1005 (struct iwm_umac_cmd_eeprom_proxy *)
1006 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1007 struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
1008 u32 hdr_offset = le32_to_cpu(hdr->offset);
1009 u32 hdr_len = le32_to_cpu(hdr->len);
1010 u32 hdr_type = le32_to_cpu(hdr->type);
1012 IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
1013 hdr_type, hdr_len, hdr_offset);
1015 if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
1019 case IWM_UMAC_CMD_EEPROM_TYPE_READ:
1020 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1022 case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1030 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1031 unsigned long buf_size,
1032 struct iwm_wifi_cmd *cmd)
1034 struct iwm_umac_cmd_get_channel_list *ch_list =
1035 (struct iwm_umac_cmd_get_channel_list *)
1036 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1037 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1038 struct ieee80211_supported_band *band;
1041 band = wiphy->bands[IEEE80211_BAND_2GHZ];
1043 for (i = 0; i < band->n_channels; i++) {
1044 unsigned long ch_mask_0 =
1045 le32_to_cpu(ch_list->ch[0].channels_mask);
1046 unsigned long ch_mask_2 =
1047 le32_to_cpu(ch_list->ch[2].channels_mask);
1049 if (!test_bit(i, &ch_mask_0))
1050 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1052 if (!test_bit(i, &ch_mask_2))
1053 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1056 band = wiphy->bands[IEEE80211_BAND_5GHZ];
1058 for (i = 0; i < min(band->n_channels, 32); i++) {
1059 unsigned long ch_mask_1 =
1060 le32_to_cpu(ch_list->ch[1].channels_mask);
1061 unsigned long ch_mask_3 =
1062 le32_to_cpu(ch_list->ch[3].channels_mask);
1064 if (!test_bit(i, &ch_mask_1))
1065 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1067 if (!test_bit(i, &ch_mask_3))
1068 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1074 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1075 unsigned long buf_size,
1076 struct iwm_wifi_cmd *cmd)
1078 struct iwm_umac_wifi_if *hdr;
1081 IWM_ERR(iwm, "Couldn't find expected wifi command\n");
1085 hdr = (struct iwm_umac_wifi_if *)cmd->buf.payload;
1087 IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1088 "oid is 0x%x\n", hdr->oid);
1090 if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1091 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1092 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1097 case UMAC_WIFI_IF_CMD_SET_PROFILE:
1098 iwm->umac_profile_active = 1;
1107 #define CT_KILL_DELAY (30 * HZ)
1108 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1109 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1111 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1112 struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1113 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1114 u32 flags = le32_to_cpu(state->flags);
1116 IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1117 flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1118 flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1120 if (flags & IWM_CARD_STATE_CTKILL_DISABLED) {
1122 * We got a CTKILL event: We bring the interface down in
1123 * oder to cool the device down, and try to bring it up
1124 * 30 seconds later. If it's still too hot, we'll go through
1125 * this code path again.
1127 cancel_delayed_work_sync(&iwm->ct_kill_delay);
1128 schedule_delayed_work(&iwm->ct_kill_delay, CT_KILL_DELAY);
1131 wiphy_rfkill_set_hw_state(wiphy, flags &
1132 (IWM_CARD_STATE_HW_DISABLED |
1133 IWM_CARD_STATE_CTKILL_DISABLED));
1138 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1139 unsigned long buf_size)
1141 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1142 struct iwm_wifi_cmd *cmd;
1148 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1149 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1151 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1152 if (source >= IWM_SRC_NUM) {
1153 IWM_CRIT(iwm, "invalid source %d\n", source);
1157 count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1158 count += sizeof(struct iwm_umac_wifi_in_hdr) -
1159 sizeof(struct iwm_dev_cmd_hdr);
1160 if (count > buf_size) {
1161 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1165 resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1167 seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1169 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1170 cmd_id, source, seq_num);
1173 * If this is a response to a previously sent command, there must
1174 * be a pending command for this sequence number.
1176 cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1178 /* Notify the caller only for sync commands. */
1180 case UMAC_HDI_IN_SOURCE_FHRX:
1181 if (iwm->lmac_handlers[cmd_id] &&
1182 test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1183 return iwm_notif_send(iwm, cmd, cmd_id, source,
1186 case UMAC_HDI_IN_SOURCE_FW:
1187 if (iwm->umac_handlers[cmd_id] &&
1188 test_bit(cmd_id, &iwm->umac_handler_map[0]))
1189 return iwm_notif_send(iwm, cmd, cmd_id, source,
1192 case UMAC_HDI_IN_SOURCE_UDMA:
1196 return iwm_rx_handle_resp(iwm, buf, count, cmd);
1199 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1200 struct iwm_wifi_cmd *cmd)
1203 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1206 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1207 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1209 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1211 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1214 case UMAC_HDI_IN_SOURCE_FHRX:
1215 if (iwm->lmac_handlers[cmd_id])
1216 ret = iwm->lmac_handlers[cmd_id]
1217 (iwm, buf, buf_size, cmd);
1219 case UMAC_HDI_IN_SOURCE_FW:
1220 if (iwm->umac_handlers[cmd_id])
1221 ret = iwm->umac_handlers[cmd_id]
1222 (iwm, buf, buf_size, cmd);
1224 case UMAC_HDI_IN_SOURCE_UDMA:
1234 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1235 unsigned long buf_size)
1238 struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1239 struct iwm_nonwifi_cmd *cmd, *next;
1241 seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1244 * We received a non wifi answer.
1245 * Let's check if there's a pending command for it, and if so
1246 * replace the command payload with the buffer, and then wake the
1248 * That means we only support synchronised non wifi command response
1251 list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1252 if (cmd->seq_num == seq_num) {
1253 cmd->resp_received = 1;
1254 cmd->buf.len = buf_size;
1255 memcpy(cmd->buf.hdr, buf, buf_size);
1256 wake_up_interruptible(&iwm->nonwifi_queue);
1262 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1263 unsigned long buf_size)
1267 unsigned long buf_offset = 0;
1268 struct iwm_udma_in_hdr *hdr;
1271 * To allow for a more efficient bus usage, UMAC
1272 * messages are encapsulated into UDMA ones. This
1273 * way we can have several UMAC messages in one bus
1275 * A UDMA frame size is always aligned on 16 bytes,
1276 * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1277 * word. This is how we parse a bus frame into several
1280 while (buf_offset < buf_size) {
1282 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1284 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1285 IWM_DBG_RX(iwm, DBG, "End of frame\n");
1289 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1291 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1293 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1294 ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1295 buf_size - buf_offset);
1296 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1297 if (GET_VAL32(hdr->cmd,
1298 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1299 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1300 IWM_ERR(iwm, "Incorrect hw signature\n");
1303 ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1304 buf_size - buf_offset);
1306 IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1310 buf_offset += iwm_rx_resp_size(hdr);
1316 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1318 struct iwm_udma_in_hdr *hdr;
1320 hdr = (struct iwm_udma_in_hdr *)buf;
1322 switch (le32_to_cpu(hdr->cmd)) {
1323 case UMAC_REBOOT_BARKER:
1324 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1325 IWM_SRC_UDMA, buf, buf_size);
1326 case UMAC_ACK_BARKER:
1327 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1328 IWM_SRC_UDMA, NULL, 0);
1330 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1331 return iwm_rx_handle_umac(iwm, buf, buf_size);
1337 static const iwm_handler iwm_umac_handlers[] =
1339 [UMAC_NOTIFY_OPCODE_ERROR] = iwm_ntf_error,
1340 [UMAC_NOTIFY_OPCODE_ALIVE] = iwm_ntf_umac_alive,
1341 [UMAC_NOTIFY_OPCODE_INIT_COMPLETE] = iwm_ntf_init_complete,
1342 [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS] = iwm_ntf_wifi_status,
1343 [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_mlme,
1344 [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC] = iwm_ntf_tx_credit_update,
1345 [UMAC_NOTIFY_OPCODE_RX_TICKET] = iwm_ntf_rx_ticket,
1346 [UMAC_CMD_OPCODE_RESET] = iwm_ntf_umac_reset,
1347 [UMAC_NOTIFY_OPCODE_STATS] = iwm_ntf_statistics,
1348 [UMAC_CMD_OPCODE_EEPROM_PROXY] = iwm_ntf_eeprom_proxy,
1349 [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST] = iwm_ntf_channel_info_list,
1350 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1351 [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_wifi_if_wrapper,
1354 static const iwm_handler iwm_lmac_handlers[] =
1356 [REPLY_TX] = iwm_ntf_tx,
1357 [REPLY_ALIVE] = iwm_ntf_lmac_version,
1358 [CALIBRATION_RES_NOTIFICATION] = iwm_ntf_calib_res,
1359 [CALIBRATION_COMPLETE_NOTIFICATION] = iwm_ntf_calib_complete,
1360 [CALIBRATION_CFG_CMD] = iwm_ntf_calib_cfg,
1361 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1362 [CARD_STATE_NOTIFICATION] = iwm_ntf_card_state,
1365 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1367 iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1368 iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1371 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1373 struct ieee80211_hdr *hdr;
1374 unsigned int hdr_len;
1376 hdr = (struct ieee80211_hdr *)skb->data;
1378 if (!ieee80211_has_protected(hdr->frame_control))
1381 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1382 if (hdr_total_len <= hdr_len)
1385 memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1386 skb_pull(skb, (hdr_total_len - hdr_len));
1389 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1390 struct iwm_rx_packet *packet,
1391 struct iwm_rx_ticket_node *ticket_node)
1393 u32 payload_offset = 0, payload_len;
1394 struct iwm_rx_ticket *ticket = ticket_node->ticket;
1395 struct iwm_rx_mpdu_hdr *mpdu_hdr;
1396 struct ieee80211_hdr *hdr;
1398 mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1399 payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1400 /* Padding is 0 or 2 bytes */
1401 payload_len = le16_to_cpu(mpdu_hdr->len) +
1402 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1403 payload_len -= ticket->tail_len;
1405 IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1406 "ticket offset:%d ticket tail len:%d\n",
1407 payload_len, payload_offset, ticket->payload_offset,
1410 IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1412 skb_pull(packet->skb, payload_offset);
1413 skb_trim(packet->skb, payload_len);
1415 iwm_remove_iv(packet->skb, ticket->payload_offset);
1417 hdr = (struct ieee80211_hdr *) packet->skb->data;
1418 if (ieee80211_is_data_qos(hdr->frame_control)) {
1419 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1420 * to the qos_ctl field in IEEE 802.11 headers. */
1421 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1423 ieee80211_hdrlen(hdr->frame_control) -
1424 IEEE80211_QOS_CTL_LEN);
1425 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1426 IEEE80211_QOS_CTL_LEN + 2);
1427 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1430 IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1431 packet->skb->data, packet->skb->len);
1434 static void classify8023(struct sk_buff *skb)
1436 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1438 if (ieee80211_is_data_qos(hdr->frame_control)) {
1439 u8 *qc = ieee80211_get_qos_ctl(hdr);
1440 /* frame has qos control */
1441 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1447 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1448 struct iwm_rx_packet *packet,
1449 struct iwm_rx_ticket_node *ticket_node)
1452 struct sk_buff *skb = packet->skb;
1453 struct wireless_dev *wdev = iwm_to_wdev(iwm);
1454 struct net_device *ndev = iwm_to_ndev(iwm);
1456 IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1458 switch (le16_to_cpu(ticket_node->ticket->action)) {
1459 case IWM_RX_TICKET_RELEASE:
1460 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1462 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1463 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1465 IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1470 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1472 skb->dev = iwm_to_ndev(iwm);
1473 skb->protocol = eth_type_trans(skb, ndev);
1474 skb->ip_summed = CHECKSUM_NONE;
1475 memset(skb->cb, 0, sizeof(skb->cb));
1477 ndev->stats.rx_packets++;
1478 ndev->stats.rx_bytes += skb->len;
1480 if (netif_rx_ni(skb) == NET_RX_DROP) {
1481 IWM_ERR(iwm, "Packet dropped\n");
1482 ndev->stats.rx_dropped++;
1485 case IWM_RX_TICKET_DROP:
1486 IWM_DBG_RX(iwm, DBG, "DROP packet: 0x%x\n",
1487 le16_to_cpu(ticket_node->ticket->flags));
1488 kfree_skb(packet->skb);
1491 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1492 le16_to_cpu(ticket_node->ticket->action));
1493 kfree_skb(packet->skb);
1497 iwm_rx_ticket_node_free(ticket_node);
1501 * Rx data processing:
1503 * We're receiving Rx packet from the LMAC, and Rx ticket from
1505 * To forward a target data packet upstream (i.e. to the
1506 * kernel network stack), we must have received an Rx ticket
1507 * that tells us we're allowed to release this packet (ticket
1508 * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1509 * among other things, where valid data actually starts in the Rx
1512 void iwm_rx_worker(struct work_struct *work)
1514 struct iwm_priv *iwm;
1515 struct iwm_rx_ticket_node *ticket, *next;
1517 iwm = container_of(work, struct iwm_priv, rx_worker);
1520 * We go through the tickets list and if there is a pending
1521 * packet for it, we push it upstream.
1522 * We stop whenever a ticket is missing its packet, as we're
1523 * supposed to send the packets in order.
1525 list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1526 struct iwm_rx_packet *packet =
1527 iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1530 IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1531 "to be handled first\n",
1532 le16_to_cpu(ticket->ticket->id));
1536 list_del(&ticket->node);
1537 list_del(&packet->node);
1538 iwm_rx_process_packet(iwm, packet, ticket);