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iwmc3200wifi: use cfg80211_roamed to send roam event
[firewire-audio.git] / drivers / net / wireless / iwmc3200wifi / rx.c
blob9e6f2cd38d60f7ed7e435866da860b10e38e3648
1 /*
2 * Intel Wireless Multicomm 3200 WiFi driver
3 *
4 * Copyright (C) 2009 Intel Corporation. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
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
15 * distribution.
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.
19 *
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.
31 *
32 *
33 * Intel Corporation <ilw@linux.intel.com>
34 * Samuel Ortiz <samuel.ortiz@intel.com>
35 * Zhu Yi <yi.zhu@intel.com>
36 *
37 */
38
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>
47
48 #include "iwm.h"
49 #include "debug.h"
50 #include "hal.h"
51 #include "umac.h"
52 #include "lmac.h"
53 #include "commands.h"
54 #include "rx.h"
55 #include "cfg80211.h"
56 #include "eeprom.h"
57
58 static int iwm_rx_check_udma_hdr(struct iwm_udma_in_hdr *hdr)
59 {
60 if ((le32_to_cpu(hdr->cmd) == UMAC_PAD_TERMINAL) ||
61 (le32_to_cpu(hdr->size) == UMAC_PAD_TERMINAL))
62 return -EINVAL;
63
64 return 0;
65 }
66
67 static inline int iwm_rx_resp_size(struct iwm_udma_in_hdr *hdr)
68 {
69 return ALIGN(le32_to_cpu(hdr->size) + sizeof(struct iwm_udma_in_hdr),
70 16);
71 }
72
73 /*
74 * Notification handlers:
75 *
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
80 * path:
81 *
82 * iwm_rx_handle()
83 * -> iwm_rx_handle_umac()
84 * -> iwm_rx_handle_wifi()
85 * -> iwm_rx_handle_resp()
86 * -> iwm_ntf_*()
87 *
88 * OR
89 *
90 * -> iwm_rx_handle_non_wifi()
91 *
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.
95 */
96 static int iwm_ntf_error(struct iwm_priv *iwm, u8 *buf,
97 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
98 {
99 struct iwm_umac_notif_error *error;
100 struct iwm_fw_error_hdr *fw_err;
101
102 error = (struct iwm_umac_notif_error *)buf;
103 fw_err = &error->err;
104
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));
120
121 return 0;
122 }
123
124 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
125 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
126 {
127 struct iwm_umac_notif_alive *alive_resp =
128 (struct iwm_umac_notif_alive *)(buf);
129 u16 status = le16_to_cpu(alive_resp->status);
130
131 if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
132 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
133 return -EIO;
134 }
135
136 iwm_tx_credit_init_pools(iwm, alive_resp);
137
138 return 0;
139 }
140
141 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
142 unsigned long buf_size,
143 struct iwm_wifi_cmd *cmd)
144 {
145 struct wiphy *wiphy = iwm_to_wiphy(iwm);
146 struct iwm_umac_notif_init_complete *init_complete =
147 (struct iwm_umac_notif_init_complete *)(buf);
148 u16 status = le16_to_cpu(init_complete->status);
149 bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
150
151 if (blocked)
152 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
153 else
154 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
155
156 wiphy_rfkill_set_hw_state(wiphy, blocked);
157
158 return 0;
159 }
160
161 static int iwm_ntf_tx_credit_update(struct iwm_priv *iwm, u8 *buf,
162 unsigned long buf_size,
163 struct iwm_wifi_cmd *cmd)
164 {
165 int pool_nr, total_freed_pages;
166 unsigned long pool_map;
167 int i, id;
168 struct iwm_umac_notif_page_dealloc *dealloc =
169 (struct iwm_umac_notif_page_dealloc *)buf;
170
171 pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
172 pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
173
174 IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
175 "update map 0x%lx\n", pool_nr, pool_map);
176
177 spin_lock(&iwm->tx_credit.lock);
178
179 for (i = 0; i < pool_nr; i++) {
180 id = GET_VAL32(dealloc->grp_info[i],
181 UMAC_DEALLOC_NTFY_GROUP_NUM);
182 if (test_bit(id, &pool_map)) {
183 total_freed_pages = GET_VAL32(dealloc->grp_info[i],
184 UMAC_DEALLOC_NTFY_PAGE_CNT);
185 iwm_tx_credit_inc(iwm, id, total_freed_pages);
186 }
187 }
188
189 spin_unlock(&iwm->tx_credit.lock);
190
191 return 0;
192 }
193
194 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
195 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
196 {
197 IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
198
199 return 0;
200 }
201
202 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
203 unsigned long buf_size,
204 struct iwm_wifi_cmd *cmd)
205 {
206 IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
207
208 return 0;
209 }
210
211 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
212 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
213 {
214 struct iwm_lmac_tx_resp *tx_resp;
215 struct iwm_umac_wifi_in_hdr *hdr;
216
217 tx_resp = (struct iwm_lmac_tx_resp *)
218 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
219 hdr = (struct iwm_umac_wifi_in_hdr *)buf;
220
221 IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
222
223 IWM_DBG_TX(iwm, DBG, "Seqnum: %d\n",
224 le16_to_cpu(hdr->sw_hdr.cmd.seq_num));
225 IWM_DBG_TX(iwm, DBG, "\tFrame cnt: %d\n", tx_resp->frame_cnt);
226 IWM_DBG_TX(iwm, DBG, "\tRetry cnt: %d\n",
227 le16_to_cpu(tx_resp->retry_cnt));
228 IWM_DBG_TX(iwm, DBG, "\tSeq ctl: %d\n", le16_to_cpu(tx_resp->seq_ctl));
229 IWM_DBG_TX(iwm, DBG, "\tByte cnt: %d\n",
230 le16_to_cpu(tx_resp->byte_cnt));
231 IWM_DBG_TX(iwm, DBG, "\tStatus: 0x%x\n", le32_to_cpu(tx_resp->status));
232
233 return 0;
234 }
235
236
237 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
238 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
239 {
240 u8 opcode;
241 u8 *calib_buf;
242 struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
243 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
244
245 opcode = hdr->opcode;
246
247 BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
248 opcode < PHY_CALIBRATE_OPCODES_NUM);
249
250 IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
251 opcode);
252
253 buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
254 calib_buf = iwm->calib_res[opcode].buf;
255
256 if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
257 kfree(calib_buf);
258 calib_buf = kzalloc(buf_size, GFP_KERNEL);
259 if (!calib_buf) {
260 IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
261 return -ENOMEM;
262 }
263 iwm->calib_res[opcode].buf = calib_buf;
264 iwm->calib_res[opcode].size = buf_size;
265 }
266
267 memcpy(calib_buf, hdr, buf_size);
268 set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
269
270 return 0;
271 }
272
273 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
274 unsigned long buf_size,
275 struct iwm_wifi_cmd *cmd)
276 {
277 IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
278
279 return 0;
280 }
281
282 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
283 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
284 {
285 struct iwm_lmac_cal_cfg_resp *cal_resp;
286
287 cal_resp = (struct iwm_lmac_cal_cfg_resp *)
288 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
289
290 IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
291 le32_to_cpu(cal_resp->status));
292
293 return 0;
294 }
295
296 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
297 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
298 {
299 struct iwm_umac_notif_wifi_status *status =
300 (struct iwm_umac_notif_wifi_status *)buf;
301
302 iwm->core_enabled |= le16_to_cpu(status->status);
303
304 return 0;
305 }
306
307 static struct iwm_rx_ticket_node *
308 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
309 {
310 struct iwm_rx_ticket_node *ticket_node;
311
312 ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
313 if (!ticket_node) {
314 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
315 return ERR_PTR(-ENOMEM);
316 }
317
318 ticket_node->ticket = kzalloc(sizeof(struct iwm_rx_ticket), GFP_KERNEL);
319 if (!ticket_node->ticket) {
320 IWM_ERR(iwm, "Couldn't allocate RX ticket\n");
321 kfree(ticket_node);
322 return ERR_PTR(-ENOMEM);
323 }
324
325 memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
326 INIT_LIST_HEAD(&ticket_node->node);
327
328 return ticket_node;
329 }
330
331 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
332 {
333 kfree(ticket_node->ticket);
334 kfree(ticket_node);
335 }
336
337 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
338 {
339 u8 id_hash = IWM_RX_ID_GET_HASH(id);
340 struct list_head *packet_list;
341 struct iwm_rx_packet *packet, *next;
342
343 packet_list = &iwm->rx_packets[id_hash];
344
345 list_for_each_entry_safe(packet, next, packet_list, node)
346 if (packet->id == id)
347 return packet;
348
349 return NULL;
350 }
351
352 static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf,
353 u32 size, u16 id)
354 {
355 struct iwm_rx_packet *packet;
356
357 packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL);
358 if (!packet) {
359 IWM_ERR(iwm, "Couldn't allocate packet\n");
360 return ERR_PTR(-ENOMEM);
361 }
362
363 packet->skb = dev_alloc_skb(size);
364 if (!packet->skb) {
365 IWM_ERR(iwm, "Couldn't allocate packet SKB\n");
366 kfree(packet);
367 return ERR_PTR(-ENOMEM);
368 }
369
370 packet->pkt_size = size;
371
372 skb_put(packet->skb, size);
373 memcpy(packet->skb->data, buf, size);
374 INIT_LIST_HEAD(&packet->node);
375 packet->id = id;
376
377 return packet;
378 }
379
380 void iwm_rx_free(struct iwm_priv *iwm)
381 {
382 struct iwm_rx_ticket_node *ticket, *nt;
383 struct iwm_rx_packet *packet, *np;
384 int i;
385
386 list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) {
387 list_del(&ticket->node);
388 iwm_rx_ticket_node_free(ticket);
389 }
390
391 for (i = 0; i < IWM_RX_ID_HASH; i++) {
392 list_for_each_entry_safe(packet, np, &iwm->rx_packets[i],
393 node) {
394 list_del(&packet->node);
395 kfree_skb(packet->skb);
396 kfree(packet);
397 }
398 }
399 }
400
401 static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
402 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
403 {
404 struct iwm_umac_notif_rx_ticket *ntf_rx_ticket =
405 (struct iwm_umac_notif_rx_ticket *)buf;
406 struct iwm_rx_ticket *ticket =
407 (struct iwm_rx_ticket *)ntf_rx_ticket->tickets;
408 int i, schedule_rx = 0;
409
410 for (i = 0; i < ntf_rx_ticket->num_tickets; i++) {
411 struct iwm_rx_ticket_node *ticket_node;
412
413 switch (le16_to_cpu(ticket->action)) {
414 case IWM_RX_TICKET_RELEASE:
415 case IWM_RX_TICKET_DROP:
416 /* We can push the packet to the stack */
417 ticket_node = iwm_rx_ticket_node_alloc(iwm, ticket);
418 if (IS_ERR(ticket_node))
419 return PTR_ERR(ticket_node);
420
421 IWM_DBG_RX(iwm, DBG, "TICKET RELEASE(%d)\n",
422 ticket->id);
423 list_add_tail(&ticket_node->node, &iwm->rx_tickets);
424
425 /*
426 * We received an Rx ticket, most likely there's
427 * a packet pending for it, it's not worth going
428 * through the packet hash list to double check.
429 * Let's just fire the rx worker..
430 */
431 schedule_rx = 1;
432
433 break;
434
435 default:
436 IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
437 ticket->action);
438 }
439
440 ticket++;
441 }
442
443 if (schedule_rx)
444 queue_work(iwm->rx_wq, &iwm->rx_worker);
445
446 return 0;
447 }
448
449 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
450 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
451 {
452 struct iwm_umac_wifi_in_hdr *wifi_hdr;
453 struct iwm_rx_packet *packet;
454 u16 id, buf_offset;
455 u32 packet_size;
456
457 IWM_DBG_RX(iwm, DBG, "\n");
458
459 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
460 id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
461 buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
462 packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
463
464 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
465 wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
466 IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
467 IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
468
469 packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
470 if (IS_ERR(packet))
471 return PTR_ERR(packet);
472
473 list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
474
475 /* We might (unlikely) have received the packet _after_ the ticket */
476 queue_work(iwm->rx_wq, &iwm->rx_worker);
477
478 return 0;
479 }
480
481 /* MLME handlers */
482 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
483 unsigned long buf_size,
484 struct iwm_wifi_cmd *cmd)
485 {
486 struct iwm_umac_notif_assoc_start *start;
487
488 start = (struct iwm_umac_notif_assoc_start *)buf;
489
490 IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
491 start->bssid, le32_to_cpu(start->roam_reason));
492
493 wake_up_interruptible(&iwm->mlme_queue);
494
495 return 0;
496 }
497
498 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
499 unsigned long buf_size,
500 struct iwm_wifi_cmd *cmd)
501 {
502 struct iwm_umac_notif_assoc_complete *complete =
503 (struct iwm_umac_notif_assoc_complete *)buf;
504
505 IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
506 complete->bssid, complete->status);
507
508 switch (le32_to_cpu(complete->status)) {
509 case UMAC_ASSOC_COMPLETE_SUCCESS:
510 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
511 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
512 iwm->channel = complete->channel;
513
514 /* Internal roaming state, avoid notifying SME. */
515 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
516 && iwm->conf.mode == UMAC_MODE_BSS) {
517 cfg80211_roamed(iwm_to_ndev(iwm),
518 complete->bssid,
519 iwm->req_ie, iwm->req_ie_len,
520 iwm->resp_ie, iwm->resp_ie_len,
521 GFP_KERNEL);
522 break;
523 }
524
525 iwm_link_on(iwm);
526
527 if (iwm->conf.mode == UMAC_MODE_IBSS)
528 goto ibss;
529
530 cfg80211_connect_result(iwm_to_ndev(iwm),
531 complete->bssid,
532 iwm->req_ie, iwm->req_ie_len,
533 iwm->resp_ie, iwm->resp_ie_len,
534 WLAN_STATUS_SUCCESS, GFP_KERNEL);
535 break;
536 case UMAC_ASSOC_COMPLETE_FAILURE:
537 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
538 memset(iwm->bssid, 0, ETH_ALEN);
539 iwm->channel = 0;
540
541 /* Internal roaming state, avoid notifying SME. */
542 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
543 && iwm->conf.mode == UMAC_MODE_BSS)
544 break;
545
546 iwm_link_off(iwm);
547
548 if (iwm->conf.mode == UMAC_MODE_IBSS)
549 goto ibss;
550
551 cfg80211_connect_result(iwm_to_ndev(iwm), complete->bssid,
552 NULL, 0, NULL, 0,
553 WLAN_STATUS_UNSPECIFIED_FAILURE,
554 GFP_KERNEL);
555 break;
556 default:
557 break;
558 }
559
560 return 0;
561
562 ibss:
563 cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
564 return 0;
565 }
566
567 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
568 unsigned long buf_size,
569 struct iwm_wifi_cmd *cmd)
570 {
571 struct iwm_umac_notif_profile_invalidate *invalid;
572
573 invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
574
575 IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n",
576 le32_to_cpu(invalid->reason));
577
578 clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
579 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
580
581 iwm->umac_profile_active = 0;
582 memset(iwm->bssid, 0, ETH_ALEN);
583 iwm->channel = 0;
584
585 iwm_link_off(iwm);
586
587 wake_up_interruptible(&iwm->mlme_queue);
588
589 return 0;
590 }
591
592 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
593 unsigned long buf_size,
594 struct iwm_wifi_cmd *cmd)
595 {
596 int ret;
597 struct iwm_umac_notif_scan_complete *scan_complete =
598 (struct iwm_umac_notif_scan_complete *)buf;
599 u32 result = le32_to_cpu(scan_complete->result);
600
601 IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
602 le32_to_cpu(scan_complete->type),
603 le32_to_cpu(scan_complete->result),
604 scan_complete->seq_num);
605
606 if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
607 IWM_ERR(iwm, "Scan complete while device not scanning\n");
608 return -EIO;
609 }
610 if (!iwm->scan_request)
611 return 0;
612
613 ret = iwm_cfg80211_inform_bss(iwm);
614
615 cfg80211_scan_done(iwm->scan_request,
616 (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
617 iwm->scan_request = NULL;
618
619 return ret;
620 }
621
622 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
623 unsigned long buf_size,
624 struct iwm_wifi_cmd *cmd)
625 {
626 struct iwm_umac_notif_sta_info *umac_sta =
627 (struct iwm_umac_notif_sta_info *)buf;
628 struct iwm_sta_info *sta;
629 int i;
630
631 switch (le32_to_cpu(umac_sta->opcode)) {
632 case UMAC_OPCODE_ADD_MODIFY:
633 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
634
635 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
636 "addr = %pM, qos = %d\n",
637 sta->valid ? "Modify" : "Add",
638 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
639 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
640 umac_sta->mac_addr,
641 umac_sta->flags & UMAC_STA_FLAG_QOS);
642
643 sta->valid = 1;
644 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
645 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
646 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
647 break;
648 case UMAC_OPCODE_REMOVE:
649 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
650 "addr = %pM\n",
651 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
652 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
653 umac_sta->mac_addr);
654
655 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
656
657 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
658 sta->valid = 0;
659
660 break;
661 case UMAC_OPCODE_CLEAR_ALL:
662 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
663 iwm->sta_table[i].valid = 0;
664
665 break;
666 default:
667 break;
668 }
669
670 return 0;
671 }
672
673 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
674 unsigned long buf_size,
675 struct iwm_wifi_cmd *cmd)
676 {
677 struct wiphy *wiphy = iwm_to_wiphy(iwm);
678 struct ieee80211_mgmt *mgmt;
679 struct iwm_umac_notif_bss_info *umac_bss =
680 (struct iwm_umac_notif_bss_info *)buf;
681 struct ieee80211_channel *channel;
682 struct ieee80211_supported_band *band;
683 struct iwm_bss_info *bss, *next;
684 s32 signal;
685 int freq;
686 u16 frame_len = le16_to_cpu(umac_bss->frame_len);
687 size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
688
689 mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
690
691 IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
692 IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
693 IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
694 le32_to_cpu(umac_bss->timestamp));
695 IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
696 le16_to_cpu(umac_bss->table_idx));
697 IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
698 IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
699 IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
700 IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
701
702 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
703 if (bss->bss->table_idx == umac_bss->table_idx)
704 break;
705
706 if (&bss->node != &iwm->bss_list) {
707 /* Remove the old BSS entry, we will add it back later. */
708 list_del(&bss->node);
709 kfree(bss->bss);
710 } else {
711 /* New BSS entry */
712
713 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
714 if (!bss) {
715 IWM_ERR(iwm, "Couldn't allocate bss_info\n");
716 return -ENOMEM;
717 }
718 }
719
720 bss->bss = kzalloc(bss_len, GFP_KERNEL);
721 if (!bss) {
722 kfree(bss);
723 IWM_ERR(iwm, "Couldn't allocate bss\n");
724 return -ENOMEM;
725 }
726
727 INIT_LIST_HEAD(&bss->node);
728 memcpy(bss->bss, umac_bss, bss_len);
729
730 if (umac_bss->band == UMAC_BAND_2GHZ)
731 band = wiphy->bands[IEEE80211_BAND_2GHZ];
732 else if (umac_bss->band == UMAC_BAND_5GHZ)
733 band = wiphy->bands[IEEE80211_BAND_5GHZ];
734 else {
735 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
736 goto err;
737 }
738
739 freq = ieee80211_channel_to_frequency(umac_bss->channel);
740 channel = ieee80211_get_channel(wiphy, freq);
741 signal = umac_bss->rssi * 100;
742
743 bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
744 mgmt, frame_len,
745 signal, GFP_KERNEL);
746 if (!bss->cfg_bss)
747 goto err;
748
749 list_add_tail(&bss->node, &iwm->bss_list);
750
751 return 0;
752 err:
753 kfree(bss->bss);
754 kfree(bss);
755
756 return -EINVAL;
757 }
758
759 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
760 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
761 {
762 struct iwm_umac_notif_bss_removed *bss_rm =
763 (struct iwm_umac_notif_bss_removed *)buf;
764 struct iwm_bss_info *bss, *next;
765 u16 table_idx;
766 int i;
767
768 for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
769 table_idx = (le16_to_cpu(bss_rm->entries[i])
770 & IWM_BSS_REMOVE_INDEX_MSK);
771 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
772 if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
773 struct ieee80211_mgmt *mgmt;
774
775 mgmt = (struct ieee80211_mgmt *)
776 (bss->bss->frame_buf);
777 IWM_DBG_MLME(iwm, ERR,
778 "BSS removed: %pM\n",
779 mgmt->bssid);
780 list_del(&bss->node);
781 kfree(bss->bss);
782 kfree(bss);
783 }
784 }
785
786 return 0;
787 }
788
789 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
790 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
791 {
792 struct iwm_umac_notif_mgt_frame *mgt_frame =
793 (struct iwm_umac_notif_mgt_frame *)buf;
794 struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
795 u8 *ie;
796
797 IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
798 le16_to_cpu(mgt_frame->len));
799
800 if (ieee80211_is_assoc_req(mgt->frame_control)) {
801 ie = mgt->u.assoc_req.variable;;
802 iwm->req_ie_len =
803 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
804 kfree(iwm->req_ie);
805 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
806 iwm->req_ie_len, GFP_KERNEL);
807 } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
808 ie = mgt->u.reassoc_req.variable;;
809 iwm->req_ie_len =
810 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
811 kfree(iwm->req_ie);
812 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
813 iwm->req_ie_len, GFP_KERNEL);
814 } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
815 ie = mgt->u.assoc_resp.variable;;
816 iwm->resp_ie_len =
817 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
818 kfree(iwm->resp_ie);
819 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
820 iwm->resp_ie_len, GFP_KERNEL);
821 } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
822 ie = mgt->u.reassoc_resp.variable;;
823 iwm->resp_ie_len =
824 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
825 kfree(iwm->resp_ie);
826 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
827 iwm->resp_ie_len, GFP_KERNEL);
828 } else {
829 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
830 cpu_to_le16(mgt->frame_control));
831 return 0;
832 }
833
834 return 0;
835 }
836
837 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
838 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
839 {
840 struct iwm_umac_notif_wifi_if *notif =
841 (struct iwm_umac_notif_wifi_if *)buf;
842
843 switch (notif->status) {
844 case WIFI_IF_NTFY_ASSOC_START:
845 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
846 case WIFI_IF_NTFY_ASSOC_COMPLETE:
847 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
848 case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
849 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
850 case WIFI_IF_NTFY_CONNECTION_TERMINATED:
851 IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
852 break;
853 case WIFI_IF_NTFY_SCAN_COMPLETE:
854 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
855 case WIFI_IF_NTFY_STA_TABLE_CHANGE:
856 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
857 case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
858 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
859 break;
860 case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
861 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
862 case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
863 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
864 break;
865 case WIFI_IF_NTFY_MGMT_FRAME:
866 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
867 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
868 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
869 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
870 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
871 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
872 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
873 case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
874 case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
875 case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
876 case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
877 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
878 notif->status);
879 break;
880 default:
881 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
882 break;
883 }
884
885 return 0;
886 }
887
888 #define IWM_STATS_UPDATE_INTERVAL (2 * HZ)
889
890 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
891 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
892 {
893 struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
894 struct iw_statistics *wstats = &iwm->wstats;
895 u16 max_rate = 0;
896 int i;
897
898 IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
899
900 if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
901 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
902 max_rate = max_t(u16, max_rate,
903 max(le16_to_cpu(stats->tx_rate[i]),
904 le16_to_cpu(stats->rx_rate[i])));
905 }
906 /* UMAC passes rate info multiplies by 2 */
907 iwm->rate = max_rate >> 1;
908 }
909 iwm->txpower = le32_to_cpu(stats->tx_power);
910
911 wstats->status = 0;
912
913 wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
914 wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
915 wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
916 wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
917
918 wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
919
920 /* according to cfg80211 */
921 if (stats->rssi_dbm < -110)
922 wstats->qual.qual = 0;
923 else if (stats->rssi_dbm > -40)
924 wstats->qual.qual = 70;
925 else
926 wstats->qual.qual = stats->rssi_dbm + 110;
927
928 wstats->qual.level = stats->rssi_dbm;
929 wstats->qual.noise = stats->noise_dbm;
930 wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
931
932 schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
933
934 mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
935
936 return 0;
937 }
938
939 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
940 unsigned long buf_size,
941 struct iwm_wifi_cmd *cmd)
942 {
943 struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
944 (struct iwm_umac_cmd_eeprom_proxy *)
945 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
946 struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
947 u32 hdr_offset = le32_to_cpu(hdr->offset);
948 u32 hdr_len = le32_to_cpu(hdr->len);
949 u32 hdr_type = le32_to_cpu(hdr->type);
950
951 IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
952 hdr_type, hdr_len, hdr_offset);
953
954 if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
955 return -EINVAL;
956
957 switch (hdr_type) {
958 case IWM_UMAC_CMD_EEPROM_TYPE_READ:
959 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
960 break;
961 case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
962 default:
963 return -ENOTSUPP;
964 }
965
966 return 0;
967 }
968
969 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
970 unsigned long buf_size,
971 struct iwm_wifi_cmd *cmd)
972 {
973 struct iwm_umac_cmd_get_channel_list *ch_list =
974 (struct iwm_umac_cmd_get_channel_list *)
975 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
976 struct wiphy *wiphy = iwm_to_wiphy(iwm);
977 struct ieee80211_supported_band *band;
978 int i;
979
980 band = wiphy->bands[IEEE80211_BAND_2GHZ];
981
982 for (i = 0; i < band->n_channels; i++) {
983 unsigned long ch_mask_0 =
984 le32_to_cpu(ch_list->ch[0].channels_mask);
985 unsigned long ch_mask_2 =
986 le32_to_cpu(ch_list->ch[2].channels_mask);
987
988 if (!test_bit(i, &ch_mask_0))
989 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
990
991 if (!test_bit(i, &ch_mask_2))
992 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
993 }
994
995 band = wiphy->bands[IEEE80211_BAND_5GHZ];
996
997 for (i = 0; i < min(band->n_channels, 32); i++) {
998 unsigned long ch_mask_1 =
999 le32_to_cpu(ch_list->ch[1].channels_mask);
1000 unsigned long ch_mask_3 =
1001 le32_to_cpu(ch_list->ch[3].channels_mask);
1002
1003 if (!test_bit(i, &ch_mask_1))
1004 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1005
1006 if (!test_bit(i, &ch_mask_3))
1007 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1008 }
1009
1010 return 0;
1011 }
1012
1013 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1014 unsigned long buf_size,
1015 struct iwm_wifi_cmd *cmd)
1016 {
1017 struct iwm_umac_wifi_if *hdr =
1018 (struct iwm_umac_wifi_if *)cmd->buf.payload;
1019
1020 IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1021 "oid is 0x%x\n", hdr->oid);
1022
1023 if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1024 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1025 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1026 } else
1027 return -EINVAL;
1028
1029 switch (hdr->oid) {
1030 case UMAC_WIFI_IF_CMD_SET_PROFILE:
1031 iwm->umac_profile_active = 1;
1032 break;
1033 default:
1034 break;
1035 }
1036
1037 return 0;
1038 }
1039
1040 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1041 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1042 {
1043 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1044 struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1045 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1046 u32 flags = le32_to_cpu(state->flags);
1047
1048 IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1049 flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1050 flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1051
1052 wiphy_rfkill_set_hw_state(wiphy, flags & IWM_CARD_STATE_HW_DISABLED);
1053
1054 return 0;
1055 }
1056
1057 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1058 unsigned long buf_size)
1059 {
1060 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1061 struct iwm_wifi_cmd *cmd;
1062 u8 source, cmd_id;
1063 u16 seq_num;
1064 u32 count;
1065 u8 resp;
1066
1067 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1068 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1069
1070 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1071 if (source >= IWM_SRC_NUM) {
1072 IWM_CRIT(iwm, "invalid source %d\n", source);
1073 return -EINVAL;
1074 }
1075
1076 count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1077 count += sizeof(struct iwm_umac_wifi_in_hdr) -
1078 sizeof(struct iwm_dev_cmd_hdr);
1079 if (count > buf_size) {
1080 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1081 return -EINVAL;
1082 }
1083
1084 resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1085
1086 seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1087
1088 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1089 cmd_id, source, seq_num);
1090
1091 /*
1092 * If this is a response to a previously sent command, there must
1093 * be a pending command for this sequence number.
1094 */
1095 cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1096
1097 /* Notify the caller only for sync commands. */
1098 switch (source) {
1099 case UMAC_HDI_IN_SOURCE_FHRX:
1100 if (iwm->lmac_handlers[cmd_id] &&
1101 test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1102 return iwm_notif_send(iwm, cmd, cmd_id, source,
1103 buf, count);
1104 break;
1105 case UMAC_HDI_IN_SOURCE_FW:
1106 if (iwm->umac_handlers[cmd_id] &&
1107 test_bit(cmd_id, &iwm->umac_handler_map[0]))
1108 return iwm_notif_send(iwm, cmd, cmd_id, source,
1109 buf, count);
1110 break;
1111 case UMAC_HDI_IN_SOURCE_UDMA:
1112 break;
1113 }
1114
1115 return iwm_rx_handle_resp(iwm, buf, count, cmd);
1116 }
1117
1118 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1119 struct iwm_wifi_cmd *cmd)
1120 {
1121 u8 source, cmd_id;
1122 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1123 int ret = 0;
1124
1125 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1126 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1127
1128 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1129
1130 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1131
1132 switch (source) {
1133 case UMAC_HDI_IN_SOURCE_FHRX:
1134 if (iwm->lmac_handlers[cmd_id])
1135 ret = iwm->lmac_handlers[cmd_id]
1136 (iwm, buf, buf_size, cmd);
1137 break;
1138 case UMAC_HDI_IN_SOURCE_FW:
1139 if (iwm->umac_handlers[cmd_id])
1140 ret = iwm->umac_handlers[cmd_id]
1141 (iwm, buf, buf_size, cmd);
1142 break;
1143 case UMAC_HDI_IN_SOURCE_UDMA:
1144 ret = -EINVAL;
1145 break;
1146 }
1147
1148 kfree(cmd);
1149
1150 return ret;
1151 }
1152
1153 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1154 unsigned long buf_size)
1155 {
1156 u8 seq_num;
1157 struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1158 struct iwm_nonwifi_cmd *cmd, *next;
1159
1160 seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1161
1162 /*
1163 * We received a non wifi answer.
1164 * Let's check if there's a pending command for it, and if so
1165 * replace the command payload with the buffer, and then wake the
1166 * callers up.
1167 * That means we only support synchronised non wifi command response
1168 * schemes.
1169 */
1170 list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1171 if (cmd->seq_num == seq_num) {
1172 cmd->resp_received = 1;
1173 cmd->buf.len = buf_size;
1174 memcpy(cmd->buf.hdr, buf, buf_size);
1175 wake_up_interruptible(&iwm->nonwifi_queue);
1176 }
1177
1178 return 0;
1179 }
1180
1181 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1182 unsigned long buf_size)
1183 {
1184 int ret = 0;
1185 u8 op_code;
1186 unsigned long buf_offset = 0;
1187 struct iwm_udma_in_hdr *hdr;
1188
1189 /*
1190 * To allow for a more efficient bus usage, UMAC
1191 * messages are encapsulated into UDMA ones. This
1192 * way we can have several UMAC messages in one bus
1193 * transfer.
1194 * A UDMA frame size is always aligned on 16 bytes,
1195 * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1196 * word. This is how we parse a bus frame into several
1197 * UDMA ones.
1198 */
1199 while (buf_offset < buf_size) {
1200
1201 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1202
1203 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1204 IWM_DBG_RX(iwm, DBG, "End of frame\n");
1205 break;
1206 }
1207
1208 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1209
1210 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1211
1212 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1213 ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1214 buf_size - buf_offset);
1215 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1216 if (GET_VAL32(hdr->cmd,
1217 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1218 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1219 IWM_ERR(iwm, "Incorrect hw signature\n");
1220 return -EINVAL;
1221 }
1222 ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1223 buf_size - buf_offset);
1224 } else {
1225 IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1226 ret |= -EINVAL;
1227 }
1228
1229 buf_offset += iwm_rx_resp_size(hdr);
1230 }
1231
1232 return ret;
1233 }
1234
1235 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1236 {
1237 struct iwm_udma_in_hdr *hdr;
1238
1239 hdr = (struct iwm_udma_in_hdr *)buf;
1240
1241 switch (le32_to_cpu(hdr->cmd)) {
1242 case UMAC_REBOOT_BARKER:
1243 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1244 IWM_SRC_UDMA, buf, buf_size);
1245 case UMAC_ACK_BARKER:
1246 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1247 IWM_SRC_UDMA, NULL, 0);
1248 default:
1249 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1250 return iwm_rx_handle_umac(iwm, buf, buf_size);
1251 }
1252
1253 return 0;
1254 }
1255
1256 static const iwm_handler iwm_umac_handlers[] =
1257 {
1258 [UMAC_NOTIFY_OPCODE_ERROR] = iwm_ntf_error,
1259 [UMAC_NOTIFY_OPCODE_ALIVE] = iwm_ntf_umac_alive,
1260 [UMAC_NOTIFY_OPCODE_INIT_COMPLETE] = iwm_ntf_init_complete,
1261 [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS] = iwm_ntf_wifi_status,
1262 [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_mlme,
1263 [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC] = iwm_ntf_tx_credit_update,
1264 [UMAC_NOTIFY_OPCODE_RX_TICKET] = iwm_ntf_rx_ticket,
1265 [UMAC_CMD_OPCODE_RESET] = iwm_ntf_umac_reset,
1266 [UMAC_NOTIFY_OPCODE_STATS] = iwm_ntf_statistics,
1267 [UMAC_CMD_OPCODE_EEPROM_PROXY] = iwm_ntf_eeprom_proxy,
1268 [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST] = iwm_ntf_channel_info_list,
1269 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1270 [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_wifi_if_wrapper,
1271 };
1272
1273 static const iwm_handler iwm_lmac_handlers[] =
1274 {
1275 [REPLY_TX] = iwm_ntf_tx,
1276 [REPLY_ALIVE] = iwm_ntf_lmac_version,
1277 [CALIBRATION_RES_NOTIFICATION] = iwm_ntf_calib_res,
1278 [CALIBRATION_COMPLETE_NOTIFICATION] = iwm_ntf_calib_complete,
1279 [CALIBRATION_CFG_CMD] = iwm_ntf_calib_cfg,
1280 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1281 [CARD_STATE_NOTIFICATION] = iwm_ntf_card_state,
1282 };
1283
1284 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1285 {
1286 iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1287 iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1288 }
1289
1290 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1291 {
1292 struct ieee80211_hdr *hdr;
1293 unsigned int hdr_len;
1294
1295 hdr = (struct ieee80211_hdr *)skb->data;
1296
1297 if (!ieee80211_has_protected(hdr->frame_control))
1298 return;
1299
1300 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1301 if (hdr_total_len <= hdr_len)
1302 return;
1303
1304 memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1305 skb_pull(skb, (hdr_total_len - hdr_len));
1306 }
1307
1308 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1309 struct iwm_rx_packet *packet,
1310 struct iwm_rx_ticket_node *ticket_node)
1311 {
1312 u32 payload_offset = 0, payload_len;
1313 struct iwm_rx_ticket *ticket = ticket_node->ticket;
1314 struct iwm_rx_mpdu_hdr *mpdu_hdr;
1315 struct ieee80211_hdr *hdr;
1316
1317 mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1318 payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1319 /* Padding is 0 or 2 bytes */
1320 payload_len = le16_to_cpu(mpdu_hdr->len) +
1321 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1322 payload_len -= ticket->tail_len;
1323
1324 IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1325 "ticket offset:%d ticket tail len:%d\n",
1326 payload_len, payload_offset, ticket->payload_offset,
1327 ticket->tail_len);
1328
1329 IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1330
1331 skb_pull(packet->skb, payload_offset);
1332 skb_trim(packet->skb, payload_len);
1333
1334 iwm_remove_iv(packet->skb, ticket->payload_offset);
1335
1336 hdr = (struct ieee80211_hdr *) packet->skb->data;
1337 if (ieee80211_is_data_qos(hdr->frame_control)) {
1338 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1339 * to the qos_ctl field in IEEE 802.11 headers. */
1340 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1341 packet->skb->data,
1342 ieee80211_hdrlen(hdr->frame_control) -
1343 IEEE80211_QOS_CTL_LEN);
1344 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1345 IEEE80211_QOS_CTL_LEN + 2);
1346 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1347 }
1348
1349 IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1350 packet->skb->data, packet->skb->len);
1351 }
1352
1353 static void classify8023(struct sk_buff *skb)
1354 {
1355 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1356
1357 if (ieee80211_is_data_qos(hdr->frame_control)) {
1358 u8 *qc = ieee80211_get_qos_ctl(hdr);
1359 /* frame has qos control */
1360 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1361 } else {
1362 skb->priority = 0;
1363 }
1364 }
1365
1366 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1367 struct iwm_rx_packet *packet,
1368 struct iwm_rx_ticket_node *ticket_node)
1369 {
1370 int ret;
1371 struct sk_buff *skb = packet->skb;
1372 struct wireless_dev *wdev = iwm_to_wdev(iwm);
1373 struct net_device *ndev = iwm_to_ndev(iwm);
1374
1375 IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1376
1377 switch (le16_to_cpu(ticket_node->ticket->action)) {
1378 case IWM_RX_TICKET_RELEASE:
1379 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1380 classify8023(skb);
1381 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1382 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1383 if (ret < 0) {
1384 IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1385 "%d\n", ret);
1386 break;
1387 }
1388
1389 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1390
1391 skb->dev = iwm_to_ndev(iwm);
1392 skb->protocol = eth_type_trans(skb, ndev);
1393 skb->ip_summed = CHECKSUM_NONE;
1394 memset(skb->cb, 0, sizeof(skb->cb));
1395
1396 ndev->stats.rx_packets++;
1397 ndev->stats.rx_bytes += skb->len;
1398
1399 if (netif_rx_ni(skb) == NET_RX_DROP) {
1400 IWM_ERR(iwm, "Packet dropped\n");
1401 ndev->stats.rx_dropped++;
1402 }
1403 break;
1404 case IWM_RX_TICKET_DROP:
1405 IWM_DBG_RX(iwm, DBG, "DROP packet\n");
1406 kfree_skb(packet->skb);
1407 break;
1408 default:
1409 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1410 le16_to_cpu(ticket_node->ticket->action));
1411 kfree_skb(packet->skb);
1412 }
1413
1414 kfree(packet);
1415 iwm_rx_ticket_node_free(ticket_node);
1416 }
1417
1418 /*
1419 * Rx data processing:
1420 *
1421 * We're receiving Rx packet from the LMAC, and Rx ticket from
1422 * the UMAC.
1423 * To forward a target data packet upstream (i.e. to the
1424 * kernel network stack), we must have received an Rx ticket
1425 * that tells us we're allowed to release this packet (ticket
1426 * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1427 * among other things, where valid data actually starts in the Rx
1428 * packet.
1429 */
1430 void iwm_rx_worker(struct work_struct *work)
1431 {
1432 struct iwm_priv *iwm;
1433 struct iwm_rx_ticket_node *ticket, *next;
1434
1435 iwm = container_of(work, struct iwm_priv, rx_worker);
1436
1437 /*
1438 * We go through the tickets list and if there is a pending
1439 * packet for it, we push it upstream.
1440 * We stop whenever a ticket is missing its packet, as we're
1441 * supposed to send the packets in order.
1442 */
1443 list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1444 struct iwm_rx_packet *packet =
1445 iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1446
1447 if (!packet) {
1448 IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1449 "to be handled first\n",
1450 le16_to_cpu(ticket->ticket->id));
1451 return;
1452 }
1453
1454 list_del(&ticket->node);
1455 list_del(&packet->node);
1456 iwm_rx_process_packet(iwm, packet, ticket);
1457 }
1458 }
1459
AMDTP streaming driver for the Linux FireWire stack (Juju)