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debugfs: Modified default dir of debugfs for debugging UHCI.
[linux/fpc-iii.git] / drivers / net / wireless / iwmc3200wifi / rx.c
blob40dbcbc16593b163e36cd7f3031cbb64187d904e
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 memcpy(iwm->last_fw_err, fw_err, sizeof(struct iwm_fw_error_hdr));
106
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));
122
123 iwm_resetting(iwm);
124
125 return 0;
126 }
127
128 static int iwm_ntf_umac_alive(struct iwm_priv *iwm, u8 *buf,
129 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
130 {
131 struct iwm_umac_notif_alive *alive_resp =
132 (struct iwm_umac_notif_alive *)(buf);
133 u16 status = le16_to_cpu(alive_resp->status);
134
135 if (status == UMAC_NTFY_ALIVE_STATUS_ERR) {
136 IWM_ERR(iwm, "Receive error UMAC_ALIVE\n");
137 return -EIO;
138 }
139
140 iwm_tx_credit_init_pools(iwm, alive_resp);
141
142 return 0;
143 }
144
145 static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
146 unsigned long buf_size,
147 struct iwm_wifi_cmd *cmd)
148 {
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);
154
155 if (blocked)
156 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
157 else
158 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
159
160 wiphy_rfkill_set_hw_state(wiphy, blocked);
161
162 return 0;
163 }
164
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)
168 {
169 int pool_nr, total_freed_pages;
170 unsigned long pool_map;
171 int i, id;
172 struct iwm_umac_notif_page_dealloc *dealloc =
173 (struct iwm_umac_notif_page_dealloc *)buf;
174
175 pool_nr = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_CNT);
176 pool_map = GET_VAL32(dealloc->changes, UMAC_DEALLOC_NTFY_CHANGES_MSK);
177
178 IWM_DBG_TX(iwm, DBG, "UMAC dealloc notification: pool nr %d, "
179 "update map 0x%lx\n", pool_nr, pool_map);
180
181 spin_lock(&iwm->tx_credit.lock);
182
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);
190 }
191 }
192
193 spin_unlock(&iwm->tx_credit.lock);
194
195 return 0;
196 }
197
198 static int iwm_ntf_umac_reset(struct iwm_priv *iwm, u8 *buf,
199 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
200 {
201 IWM_DBG_NTF(iwm, DBG, "UMAC RESET done\n");
202
203 return 0;
204 }
205
206 static int iwm_ntf_lmac_version(struct iwm_priv *iwm, u8 *buf,
207 unsigned long buf_size,
208 struct iwm_wifi_cmd *cmd)
209 {
210 IWM_DBG_NTF(iwm, INFO, "LMAC Version: %x.%x\n", buf[9], buf[8]);
211
212 return 0;
213 }
214
215 static int iwm_ntf_tx(struct iwm_priv *iwm, u8 *buf,
216 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
217 {
218 struct iwm_lmac_tx_resp *tx_resp;
219 struct iwm_umac_wifi_in_hdr *hdr;
220
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;
224
225 IWM_DBG_TX(iwm, DBG, "REPLY_TX, buf size: %lu\n", buf_size);
226
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));
236
237 return 0;
238 }
239
240
241 static int iwm_ntf_calib_res(struct iwm_priv *iwm, u8 *buf,
242 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
243 {
244 u8 opcode;
245 u8 *calib_buf;
246 struct iwm_lmac_calib_hdr *hdr = (struct iwm_lmac_calib_hdr *)
247 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
248
249 opcode = hdr->opcode;
250
251 BUG_ON(opcode >= CALIBRATION_CMD_NUM ||
252 opcode < PHY_CALIBRATE_OPCODES_NUM);
253
254 IWM_DBG_NTF(iwm, DBG, "Store calibration result for opcode: %d\n",
255 opcode);
256
257 buf_size -= sizeof(struct iwm_umac_wifi_in_hdr);
258 calib_buf = iwm->calib_res[opcode].buf;
259
260 if (!calib_buf || (iwm->calib_res[opcode].size < buf_size)) {
261 kfree(calib_buf);
262 calib_buf = kzalloc(buf_size, GFP_KERNEL);
263 if (!calib_buf) {
264 IWM_ERR(iwm, "Memory allocation failed: calib_res\n");
265 return -ENOMEM;
266 }
267 iwm->calib_res[opcode].buf = calib_buf;
268 iwm->calib_res[opcode].size = buf_size;
269 }
270
271 memcpy(calib_buf, hdr, buf_size);
272 set_bit(opcode - PHY_CALIBRATE_OPCODES_NUM, &iwm->calib_done_map);
273
274 return 0;
275 }
276
277 static int iwm_ntf_calib_complete(struct iwm_priv *iwm, u8 *buf,
278 unsigned long buf_size,
279 struct iwm_wifi_cmd *cmd)
280 {
281 IWM_DBG_NTF(iwm, DBG, "Calibration completed\n");
282
283 return 0;
284 }
285
286 static int iwm_ntf_calib_cfg(struct iwm_priv *iwm, u8 *buf,
287 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
288 {
289 struct iwm_lmac_cal_cfg_resp *cal_resp;
290
291 cal_resp = (struct iwm_lmac_cal_cfg_resp *)
292 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
293
294 IWM_DBG_NTF(iwm, DBG, "Calibration CFG command status: %d\n",
295 le32_to_cpu(cal_resp->status));
296
297 return 0;
298 }
299
300 static int iwm_ntf_wifi_status(struct iwm_priv *iwm, u8 *buf,
301 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
302 {
303 struct iwm_umac_notif_wifi_status *status =
304 (struct iwm_umac_notif_wifi_status *)buf;
305
306 iwm->core_enabled |= le16_to_cpu(status->status);
307
308 return 0;
309 }
310
311 static struct iwm_rx_ticket_node *
312 iwm_rx_ticket_node_alloc(struct iwm_priv *iwm, struct iwm_rx_ticket *ticket)
313 {
314 struct iwm_rx_ticket_node *ticket_node;
315
316 ticket_node = kzalloc(sizeof(struct iwm_rx_ticket_node), GFP_KERNEL);
317 if (!ticket_node) {
318 IWM_ERR(iwm, "Couldn't allocate ticket node\n");
319 return ERR_PTR(-ENOMEM);
320 }
321
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");
325 kfree(ticket_node);
326 return ERR_PTR(-ENOMEM);
327 }
328
329 memcpy(ticket_node->ticket, ticket, sizeof(struct iwm_rx_ticket));
330 INIT_LIST_HEAD(&ticket_node->node);
331
332 return ticket_node;
333 }
334
335 static void iwm_rx_ticket_node_free(struct iwm_rx_ticket_node *ticket_node)
336 {
337 kfree(ticket_node->ticket);
338 kfree(ticket_node);
339 }
340
341 static struct iwm_rx_packet *iwm_rx_packet_get(struct iwm_priv *iwm, u16 id)
342 {
343 u8 id_hash = IWM_RX_ID_GET_HASH(id);
344 struct list_head *packet_list;
345 struct iwm_rx_packet *packet, *next;
346
347 packet_list = &iwm->rx_packets[id_hash];
348
349 list_for_each_entry_safe(packet, next, packet_list, node)
350 if (packet->id == id)
351 return packet;
352
353 return NULL;
354 }
355
356 static struct iwm_rx_packet *iwm_rx_packet_alloc(struct iwm_priv *iwm, u8 *buf,
357 u32 size, u16 id)
358 {
359 struct iwm_rx_packet *packet;
360
361 packet = kzalloc(sizeof(struct iwm_rx_packet), GFP_KERNEL);
362 if (!packet) {
363 IWM_ERR(iwm, "Couldn't allocate packet\n");
364 return ERR_PTR(-ENOMEM);
365 }
366
367 packet->skb = dev_alloc_skb(size);
368 if (!packet->skb) {
369 IWM_ERR(iwm, "Couldn't allocate packet SKB\n");
370 kfree(packet);
371 return ERR_PTR(-ENOMEM);
372 }
373
374 packet->pkt_size = size;
375
376 skb_put(packet->skb, size);
377 memcpy(packet->skb->data, buf, size);
378 INIT_LIST_HEAD(&packet->node);
379 packet->id = id;
380
381 return packet;
382 }
383
384 void iwm_rx_free(struct iwm_priv *iwm)
385 {
386 struct iwm_rx_ticket_node *ticket, *nt;
387 struct iwm_rx_packet *packet, *np;
388 int i;
389
390 list_for_each_entry_safe(ticket, nt, &iwm->rx_tickets, node) {
391 list_del(&ticket->node);
392 iwm_rx_ticket_node_free(ticket);
393 }
394
395 for (i = 0; i < IWM_RX_ID_HASH; i++) {
396 list_for_each_entry_safe(packet, np, &iwm->rx_packets[i],
397 node) {
398 list_del(&packet->node);
399 kfree_skb(packet->skb);
400 kfree(packet);
401 }
402 }
403 }
404
405 static int iwm_ntf_rx_ticket(struct iwm_priv *iwm, u8 *buf,
406 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
407 {
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;
413
414 for (i = 0; i < ntf_rx_ticket->num_tickets; i++) {
415 struct iwm_rx_ticket_node *ticket_node;
416
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);
424
425 IWM_DBG_RX(iwm, DBG, "TICKET RELEASE(%d)\n",
426 ticket->id);
427 list_add_tail(&ticket_node->node, &iwm->rx_tickets);
428
429 /*
430 * We received an Rx ticket, most likely there's
431 * a packet pending for it, it's not worth going
432 * through the packet hash list to double check.
433 * Let's just fire the rx worker..
434 */
435 schedule_rx = 1;
436
437 break;
438
439 default:
440 IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
441 ticket->action);
442 }
443
444 ticket++;
445 }
446
447 if (schedule_rx)
448 queue_work(iwm->rx_wq, &iwm->rx_worker);
449
450 return 0;
451 }
452
453 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
454 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
455 {
456 struct iwm_umac_wifi_in_hdr *wifi_hdr;
457 struct iwm_rx_packet *packet;
458 u16 id, buf_offset;
459 u32 packet_size;
460
461 IWM_DBG_RX(iwm, DBG, "\n");
462
463 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
464 id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
465 buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
466 packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
467
468 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
469 wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
470 IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
471 IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
472
473 packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
474 if (IS_ERR(packet))
475 return PTR_ERR(packet);
476
477 list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
478
479 /* We might (unlikely) have received the packet _after_ the ticket */
480 queue_work(iwm->rx_wq, &iwm->rx_worker);
481
482 return 0;
483 }
484
485 /* MLME handlers */
486 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
487 unsigned long buf_size,
488 struct iwm_wifi_cmd *cmd)
489 {
490 struct iwm_umac_notif_assoc_start *start;
491
492 start = (struct iwm_umac_notif_assoc_start *)buf;
493
494 IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
495 start->bssid, le32_to_cpu(start->roam_reason));
496
497 wake_up_interruptible(&iwm->mlme_queue);
498
499 return 0;
500 }
501
502 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
503 unsigned long buf_size,
504 struct iwm_wifi_cmd *cmd)
505 {
506 struct iwm_umac_notif_assoc_complete *complete =
507 (struct iwm_umac_notif_assoc_complete *)buf;
508
509 IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
510 complete->bssid, complete->status);
511
512 switch (le32_to_cpu(complete->status)) {
513 case UMAC_ASSOC_COMPLETE_SUCCESS:
514 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
515 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
516 iwm->channel = complete->channel;
517
518 /* Internal roaming state, avoid notifying SME. */
519 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
520 && iwm->conf.mode == UMAC_MODE_BSS) {
521 cancel_delayed_work(&iwm->disconnect);
522 cfg80211_roamed(iwm_to_ndev(iwm),
523 complete->bssid,
524 iwm->req_ie, iwm->req_ie_len,
525 iwm->resp_ie, iwm->resp_ie_len,
526 GFP_KERNEL);
527 break;
528 }
529
530 iwm_link_on(iwm);
531
532 if (iwm->conf.mode == UMAC_MODE_IBSS)
533 goto ibss;
534
535 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
536 cfg80211_connect_result(iwm_to_ndev(iwm),
537 complete->bssid,
538 iwm->req_ie, iwm->req_ie_len,
539 iwm->resp_ie, iwm->resp_ie_len,
540 WLAN_STATUS_SUCCESS,
541 GFP_KERNEL);
542 else
543 cfg80211_roamed(iwm_to_ndev(iwm),
544 complete->bssid,
545 iwm->req_ie, iwm->req_ie_len,
546 iwm->resp_ie, iwm->resp_ie_len,
547 GFP_KERNEL);
548 break;
549 case UMAC_ASSOC_COMPLETE_FAILURE:
550 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
551 memset(iwm->bssid, 0, ETH_ALEN);
552 iwm->channel = 0;
553
554 /* Internal roaming state, avoid notifying SME. */
555 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
556 && iwm->conf.mode == UMAC_MODE_BSS) {
557 cancel_delayed_work(&iwm->disconnect);
558 break;
559 }
560
561 iwm_link_off(iwm);
562
563 if (iwm->conf.mode == UMAC_MODE_IBSS)
564 goto ibss;
565
566 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
567 cfg80211_connect_result(iwm_to_ndev(iwm),
568 complete->bssid,
569 NULL, 0, NULL, 0,
570 WLAN_STATUS_UNSPECIFIED_FAILURE,
571 GFP_KERNEL);
572 else
573 cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
574 GFP_KERNEL);
575 break;
576 default:
577 break;
578 }
579
580 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
581 return 0;
582
583 ibss:
584 cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
585 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
586 return 0;
587 }
588
589 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
590 unsigned long buf_size,
591 struct iwm_wifi_cmd *cmd)
592 {
593 struct iwm_umac_notif_profile_invalidate *invalid;
594 u32 reason;
595
596 invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
597 reason = le32_to_cpu(invalid->reason);
598
599 IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
600
601 if (reason != UMAC_PROFILE_INVALID_REQUEST &&
602 test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
603 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
604 0, WLAN_STATUS_UNSPECIFIED_FAILURE,
605 GFP_KERNEL);
606
607 clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
608 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
609
610 iwm->umac_profile_active = 0;
611 memset(iwm->bssid, 0, ETH_ALEN);
612 iwm->channel = 0;
613
614 iwm_link_off(iwm);
615
616 wake_up_interruptible(&iwm->mlme_queue);
617
618 return 0;
619 }
620
621 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
622
623 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
624 unsigned long buf_size,
625 struct iwm_wifi_cmd *cmd)
626 {
627 IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
628
629 schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
630
631 return 0;
632 }
633
634 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
635 unsigned long buf_size,
636 struct iwm_wifi_cmd *cmd)
637 {
638 int ret;
639 struct iwm_umac_notif_scan_complete *scan_complete =
640 (struct iwm_umac_notif_scan_complete *)buf;
641 u32 result = le32_to_cpu(scan_complete->result);
642
643 IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
644 le32_to_cpu(scan_complete->type),
645 le32_to_cpu(scan_complete->result),
646 scan_complete->seq_num);
647
648 if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
649 IWM_ERR(iwm, "Scan complete while device not scanning\n");
650 return -EIO;
651 }
652 if (!iwm->scan_request)
653 return 0;
654
655 ret = iwm_cfg80211_inform_bss(iwm);
656
657 cfg80211_scan_done(iwm->scan_request,
658 (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
659 iwm->scan_request = NULL;
660
661 return ret;
662 }
663
664 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
665 unsigned long buf_size,
666 struct iwm_wifi_cmd *cmd)
667 {
668 struct iwm_umac_notif_sta_info *umac_sta =
669 (struct iwm_umac_notif_sta_info *)buf;
670 struct iwm_sta_info *sta;
671 int i;
672
673 switch (le32_to_cpu(umac_sta->opcode)) {
674 case UMAC_OPCODE_ADD_MODIFY:
675 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
676
677 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
678 "addr = %pM, qos = %d\n",
679 sta->valid ? "Modify" : "Add",
680 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
681 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
682 umac_sta->mac_addr,
683 umac_sta->flags & UMAC_STA_FLAG_QOS);
684
685 sta->valid = 1;
686 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
687 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
688 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
689 break;
690 case UMAC_OPCODE_REMOVE:
691 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
692 "addr = %pM\n",
693 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
694 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
695 umac_sta->mac_addr);
696
697 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
698
699 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
700 sta->valid = 0;
701
702 break;
703 case UMAC_OPCODE_CLEAR_ALL:
704 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
705 iwm->sta_table[i].valid = 0;
706
707 break;
708 default:
709 break;
710 }
711
712 return 0;
713 }
714
715 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
716 unsigned long buf_size,
717 struct iwm_wifi_cmd *cmd)
718 {
719 struct wiphy *wiphy = iwm_to_wiphy(iwm);
720 struct ieee80211_mgmt *mgmt;
721 struct iwm_umac_notif_bss_info *umac_bss =
722 (struct iwm_umac_notif_bss_info *)buf;
723 struct ieee80211_channel *channel;
724 struct ieee80211_supported_band *band;
725 struct iwm_bss_info *bss, *next;
726 s32 signal;
727 int freq;
728 u16 frame_len = le16_to_cpu(umac_bss->frame_len);
729 size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
730
731 mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
732
733 IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
734 IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
735 IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
736 le32_to_cpu(umac_bss->timestamp));
737 IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
738 le16_to_cpu(umac_bss->table_idx));
739 IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
740 IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
741 IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
742 IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
743
744 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
745 if (bss->bss->table_idx == umac_bss->table_idx)
746 break;
747
748 if (&bss->node != &iwm->bss_list) {
749 /* Remove the old BSS entry, we will add it back later. */
750 list_del(&bss->node);
751 kfree(bss->bss);
752 } else {
753 /* New BSS entry */
754
755 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
756 if (!bss) {
757 IWM_ERR(iwm, "Couldn't allocate bss_info\n");
758 return -ENOMEM;
759 }
760 }
761
762 bss->bss = kzalloc(bss_len, GFP_KERNEL);
763 if (!bss) {
764 kfree(bss);
765 IWM_ERR(iwm, "Couldn't allocate bss\n");
766 return -ENOMEM;
767 }
768
769 INIT_LIST_HEAD(&bss->node);
770 memcpy(bss->bss, umac_bss, bss_len);
771
772 if (umac_bss->band == UMAC_BAND_2GHZ)
773 band = wiphy->bands[IEEE80211_BAND_2GHZ];
774 else if (umac_bss->band == UMAC_BAND_5GHZ)
775 band = wiphy->bands[IEEE80211_BAND_5GHZ];
776 else {
777 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
778 goto err;
779 }
780
781 freq = ieee80211_channel_to_frequency(umac_bss->channel);
782 channel = ieee80211_get_channel(wiphy, freq);
783 signal = umac_bss->rssi * 100;
784
785 bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
786 mgmt, frame_len,
787 signal, GFP_KERNEL);
788 if (!bss->cfg_bss)
789 goto err;
790
791 list_add_tail(&bss->node, &iwm->bss_list);
792
793 return 0;
794 err:
795 kfree(bss->bss);
796 kfree(bss);
797
798 return -EINVAL;
799 }
800
801 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
802 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
803 {
804 struct iwm_umac_notif_bss_removed *bss_rm =
805 (struct iwm_umac_notif_bss_removed *)buf;
806 struct iwm_bss_info *bss, *next;
807 u16 table_idx;
808 int i;
809
810 for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
811 table_idx = (le16_to_cpu(bss_rm->entries[i])
812 & IWM_BSS_REMOVE_INDEX_MSK);
813 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
814 if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
815 struct ieee80211_mgmt *mgmt;
816
817 mgmt = (struct ieee80211_mgmt *)
818 (bss->bss->frame_buf);
819 IWM_DBG_MLME(iwm, ERR,
820 "BSS removed: %pM\n",
821 mgmt->bssid);
822 list_del(&bss->node);
823 kfree(bss->bss);
824 kfree(bss);
825 }
826 }
827
828 return 0;
829 }
830
831 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
832 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
833 {
834 struct iwm_umac_notif_mgt_frame *mgt_frame =
835 (struct iwm_umac_notif_mgt_frame *)buf;
836 struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
837 u8 *ie;
838
839 IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
840 le16_to_cpu(mgt_frame->len));
841
842 if (ieee80211_is_assoc_req(mgt->frame_control)) {
843 ie = mgt->u.assoc_req.variable;;
844 iwm->req_ie_len =
845 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
846 kfree(iwm->req_ie);
847 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
848 iwm->req_ie_len, GFP_KERNEL);
849 } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
850 ie = mgt->u.reassoc_req.variable;;
851 iwm->req_ie_len =
852 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
853 kfree(iwm->req_ie);
854 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
855 iwm->req_ie_len, GFP_KERNEL);
856 } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
857 ie = mgt->u.assoc_resp.variable;;
858 iwm->resp_ie_len =
859 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
860 kfree(iwm->resp_ie);
861 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
862 iwm->resp_ie_len, GFP_KERNEL);
863 } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
864 ie = mgt->u.reassoc_resp.variable;;
865 iwm->resp_ie_len =
866 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
867 kfree(iwm->resp_ie);
868 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
869 iwm->resp_ie_len, GFP_KERNEL);
870 } else {
871 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
872 le16_to_cpu(mgt->frame_control));
873 return 0;
874 }
875
876 return 0;
877 }
878
879 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
880 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
881 {
882 struct iwm_umac_notif_wifi_if *notif =
883 (struct iwm_umac_notif_wifi_if *)buf;
884
885 switch (notif->status) {
886 case WIFI_IF_NTFY_ASSOC_START:
887 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
888 case WIFI_IF_NTFY_ASSOC_COMPLETE:
889 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
890 case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
891 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
892 case WIFI_IF_NTFY_CONNECTION_TERMINATED:
893 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
894 case WIFI_IF_NTFY_SCAN_COMPLETE:
895 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
896 case WIFI_IF_NTFY_STA_TABLE_CHANGE:
897 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
898 case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
899 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
900 break;
901 case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
902 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
903 case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
904 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
905 break;
906 case WIFI_IF_NTFY_MGMT_FRAME:
907 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
908 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
909 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
910 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
911 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
912 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
913 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
914 case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
915 case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
916 case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
917 case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
918 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
919 notif->status);
920 break;
921 default:
922 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
923 break;
924 }
925
926 return 0;
927 }
928
929 #define IWM_STATS_UPDATE_INTERVAL (2 * HZ)
930
931 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
932 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
933 {
934 struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
935 struct iw_statistics *wstats = &iwm->wstats;
936 u16 max_rate = 0;
937 int i;
938
939 IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
940
941 if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
942 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
943 max_rate = max_t(u16, max_rate,
944 max(le16_to_cpu(stats->tx_rate[i]),
945 le16_to_cpu(stats->rx_rate[i])));
946 }
947 /* UMAC passes rate info multiplies by 2 */
948 iwm->rate = max_rate >> 1;
949 }
950 iwm->txpower = le32_to_cpu(stats->tx_power);
951
952 wstats->status = 0;
953
954 wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
955 wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
956 wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
957 wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
958
959 wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
960
961 /* according to cfg80211 */
962 if (stats->rssi_dbm < -110)
963 wstats->qual.qual = 0;
964 else if (stats->rssi_dbm > -40)
965 wstats->qual.qual = 70;
966 else
967 wstats->qual.qual = stats->rssi_dbm + 110;
968
969 wstats->qual.level = stats->rssi_dbm;
970 wstats->qual.noise = stats->noise_dbm;
971 wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
972
973 schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
974
975 mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
976
977 return 0;
978 }
979
980 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
981 unsigned long buf_size,
982 struct iwm_wifi_cmd *cmd)
983 {
984 struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
985 (struct iwm_umac_cmd_eeprom_proxy *)
986 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
987 struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
988 u32 hdr_offset = le32_to_cpu(hdr->offset);
989 u32 hdr_len = le32_to_cpu(hdr->len);
990 u32 hdr_type = le32_to_cpu(hdr->type);
991
992 IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
993 hdr_type, hdr_len, hdr_offset);
994
995 if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
996 return -EINVAL;
997
998 switch (hdr_type) {
999 case IWM_UMAC_CMD_EEPROM_TYPE_READ:
1000 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1001 break;
1002 case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1003 default:
1004 return -ENOTSUPP;
1005 }
1006
1007 return 0;
1008 }
1009
1010 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1011 unsigned long buf_size,
1012 struct iwm_wifi_cmd *cmd)
1013 {
1014 struct iwm_umac_cmd_get_channel_list *ch_list =
1015 (struct iwm_umac_cmd_get_channel_list *)
1016 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1017 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1018 struct ieee80211_supported_band *band;
1019 int i;
1020
1021 band = wiphy->bands[IEEE80211_BAND_2GHZ];
1022
1023 for (i = 0; i < band->n_channels; i++) {
1024 unsigned long ch_mask_0 =
1025 le32_to_cpu(ch_list->ch[0].channels_mask);
1026 unsigned long ch_mask_2 =
1027 le32_to_cpu(ch_list->ch[2].channels_mask);
1028
1029 if (!test_bit(i, &ch_mask_0))
1030 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1031
1032 if (!test_bit(i, &ch_mask_2))
1033 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1034 }
1035
1036 band = wiphy->bands[IEEE80211_BAND_5GHZ];
1037
1038 for (i = 0; i < min(band->n_channels, 32); i++) {
1039 unsigned long ch_mask_1 =
1040 le32_to_cpu(ch_list->ch[1].channels_mask);
1041 unsigned long ch_mask_3 =
1042 le32_to_cpu(ch_list->ch[3].channels_mask);
1043
1044 if (!test_bit(i, &ch_mask_1))
1045 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1046
1047 if (!test_bit(i, &ch_mask_3))
1048 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1049 }
1050
1051 return 0;
1052 }
1053
1054 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1055 unsigned long buf_size,
1056 struct iwm_wifi_cmd *cmd)
1057 {
1058 struct iwm_umac_wifi_if *hdr =
1059 (struct iwm_umac_wifi_if *)cmd->buf.payload;
1060
1061 IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1062 "oid is 0x%x\n", hdr->oid);
1063
1064 if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1065 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1066 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1067 } else
1068 return -EINVAL;
1069
1070 switch (hdr->oid) {
1071 case UMAC_WIFI_IF_CMD_SET_PROFILE:
1072 iwm->umac_profile_active = 1;
1073 break;
1074 default:
1075 break;
1076 }
1077
1078 return 0;
1079 }
1080
1081 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1082 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1083 {
1084 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1085 struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1086 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1087 u32 flags = le32_to_cpu(state->flags);
1088
1089 IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1090 flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1091 flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1092
1093 wiphy_rfkill_set_hw_state(wiphy, flags & IWM_CARD_STATE_HW_DISABLED);
1094
1095 return 0;
1096 }
1097
1098 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1099 unsigned long buf_size)
1100 {
1101 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1102 struct iwm_wifi_cmd *cmd;
1103 u8 source, cmd_id;
1104 u16 seq_num;
1105 u32 count;
1106 u8 resp;
1107
1108 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1109 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1110
1111 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1112 if (source >= IWM_SRC_NUM) {
1113 IWM_CRIT(iwm, "invalid source %d\n", source);
1114 return -EINVAL;
1115 }
1116
1117 count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1118 count += sizeof(struct iwm_umac_wifi_in_hdr) -
1119 sizeof(struct iwm_dev_cmd_hdr);
1120 if (count > buf_size) {
1121 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1122 return -EINVAL;
1123 }
1124
1125 resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1126
1127 seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1128
1129 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1130 cmd_id, source, seq_num);
1131
1132 /*
1133 * If this is a response to a previously sent command, there must
1134 * be a pending command for this sequence number.
1135 */
1136 cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1137
1138 /* Notify the caller only for sync commands. */
1139 switch (source) {
1140 case UMAC_HDI_IN_SOURCE_FHRX:
1141 if (iwm->lmac_handlers[cmd_id] &&
1142 test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1143 return iwm_notif_send(iwm, cmd, cmd_id, source,
1144 buf, count);
1145 break;
1146 case UMAC_HDI_IN_SOURCE_FW:
1147 if (iwm->umac_handlers[cmd_id] &&
1148 test_bit(cmd_id, &iwm->umac_handler_map[0]))
1149 return iwm_notif_send(iwm, cmd, cmd_id, source,
1150 buf, count);
1151 break;
1152 case UMAC_HDI_IN_SOURCE_UDMA:
1153 break;
1154 }
1155
1156 return iwm_rx_handle_resp(iwm, buf, count, cmd);
1157 }
1158
1159 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1160 struct iwm_wifi_cmd *cmd)
1161 {
1162 u8 source, cmd_id;
1163 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1164 int ret = 0;
1165
1166 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1167 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1168
1169 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1170
1171 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1172
1173 switch (source) {
1174 case UMAC_HDI_IN_SOURCE_FHRX:
1175 if (iwm->lmac_handlers[cmd_id])
1176 ret = iwm->lmac_handlers[cmd_id]
1177 (iwm, buf, buf_size, cmd);
1178 break;
1179 case UMAC_HDI_IN_SOURCE_FW:
1180 if (iwm->umac_handlers[cmd_id])
1181 ret = iwm->umac_handlers[cmd_id]
1182 (iwm, buf, buf_size, cmd);
1183 break;
1184 case UMAC_HDI_IN_SOURCE_UDMA:
1185 ret = -EINVAL;
1186 break;
1187 }
1188
1189 kfree(cmd);
1190
1191 return ret;
1192 }
1193
1194 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1195 unsigned long buf_size)
1196 {
1197 u8 seq_num;
1198 struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1199 struct iwm_nonwifi_cmd *cmd, *next;
1200
1201 seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1202
1203 /*
1204 * We received a non wifi answer.
1205 * Let's check if there's a pending command for it, and if so
1206 * replace the command payload with the buffer, and then wake the
1207 * callers up.
1208 * That means we only support synchronised non wifi command response
1209 * schemes.
1210 */
1211 list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1212 if (cmd->seq_num == seq_num) {
1213 cmd->resp_received = 1;
1214 cmd->buf.len = buf_size;
1215 memcpy(cmd->buf.hdr, buf, buf_size);
1216 wake_up_interruptible(&iwm->nonwifi_queue);
1217 }
1218
1219 return 0;
1220 }
1221
1222 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1223 unsigned long buf_size)
1224 {
1225 int ret = 0;
1226 u8 op_code;
1227 unsigned long buf_offset = 0;
1228 struct iwm_udma_in_hdr *hdr;
1229
1230 /*
1231 * To allow for a more efficient bus usage, UMAC
1232 * messages are encapsulated into UDMA ones. This
1233 * way we can have several UMAC messages in one bus
1234 * transfer.
1235 * A UDMA frame size is always aligned on 16 bytes,
1236 * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1237 * word. This is how we parse a bus frame into several
1238 * UDMA ones.
1239 */
1240 while (buf_offset < buf_size) {
1241
1242 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1243
1244 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1245 IWM_DBG_RX(iwm, DBG, "End of frame\n");
1246 break;
1247 }
1248
1249 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1250
1251 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1252
1253 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1254 ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1255 buf_size - buf_offset);
1256 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1257 if (GET_VAL32(hdr->cmd,
1258 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1259 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1260 IWM_ERR(iwm, "Incorrect hw signature\n");
1261 return -EINVAL;
1262 }
1263 ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1264 buf_size - buf_offset);
1265 } else {
1266 IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1267 ret |= -EINVAL;
1268 }
1269
1270 buf_offset += iwm_rx_resp_size(hdr);
1271 }
1272
1273 return ret;
1274 }
1275
1276 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1277 {
1278 struct iwm_udma_in_hdr *hdr;
1279
1280 hdr = (struct iwm_udma_in_hdr *)buf;
1281
1282 switch (le32_to_cpu(hdr->cmd)) {
1283 case UMAC_REBOOT_BARKER:
1284 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1285 IWM_SRC_UDMA, buf, buf_size);
1286 case UMAC_ACK_BARKER:
1287 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1288 IWM_SRC_UDMA, NULL, 0);
1289 default:
1290 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1291 return iwm_rx_handle_umac(iwm, buf, buf_size);
1292 }
1293
1294 return 0;
1295 }
1296
1297 static const iwm_handler iwm_umac_handlers[] =
1298 {
1299 [UMAC_NOTIFY_OPCODE_ERROR] = iwm_ntf_error,
1300 [UMAC_NOTIFY_OPCODE_ALIVE] = iwm_ntf_umac_alive,
1301 [UMAC_NOTIFY_OPCODE_INIT_COMPLETE] = iwm_ntf_init_complete,
1302 [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS] = iwm_ntf_wifi_status,
1303 [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_mlme,
1304 [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC] = iwm_ntf_tx_credit_update,
1305 [UMAC_NOTIFY_OPCODE_RX_TICKET] = iwm_ntf_rx_ticket,
1306 [UMAC_CMD_OPCODE_RESET] = iwm_ntf_umac_reset,
1307 [UMAC_NOTIFY_OPCODE_STATS] = iwm_ntf_statistics,
1308 [UMAC_CMD_OPCODE_EEPROM_PROXY] = iwm_ntf_eeprom_proxy,
1309 [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST] = iwm_ntf_channel_info_list,
1310 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1311 [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_wifi_if_wrapper,
1312 };
1313
1314 static const iwm_handler iwm_lmac_handlers[] =
1315 {
1316 [REPLY_TX] = iwm_ntf_tx,
1317 [REPLY_ALIVE] = iwm_ntf_lmac_version,
1318 [CALIBRATION_RES_NOTIFICATION] = iwm_ntf_calib_res,
1319 [CALIBRATION_COMPLETE_NOTIFICATION] = iwm_ntf_calib_complete,
1320 [CALIBRATION_CFG_CMD] = iwm_ntf_calib_cfg,
1321 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1322 [CARD_STATE_NOTIFICATION] = iwm_ntf_card_state,
1323 };
1324
1325 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1326 {
1327 iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1328 iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1329 }
1330
1331 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1332 {
1333 struct ieee80211_hdr *hdr;
1334 unsigned int hdr_len;
1335
1336 hdr = (struct ieee80211_hdr *)skb->data;
1337
1338 if (!ieee80211_has_protected(hdr->frame_control))
1339 return;
1340
1341 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1342 if (hdr_total_len <= hdr_len)
1343 return;
1344
1345 memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1346 skb_pull(skb, (hdr_total_len - hdr_len));
1347 }
1348
1349 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1350 struct iwm_rx_packet *packet,
1351 struct iwm_rx_ticket_node *ticket_node)
1352 {
1353 u32 payload_offset = 0, payload_len;
1354 struct iwm_rx_ticket *ticket = ticket_node->ticket;
1355 struct iwm_rx_mpdu_hdr *mpdu_hdr;
1356 struct ieee80211_hdr *hdr;
1357
1358 mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1359 payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1360 /* Padding is 0 or 2 bytes */
1361 payload_len = le16_to_cpu(mpdu_hdr->len) +
1362 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1363 payload_len -= ticket->tail_len;
1364
1365 IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1366 "ticket offset:%d ticket tail len:%d\n",
1367 payload_len, payload_offset, ticket->payload_offset,
1368 ticket->tail_len);
1369
1370 IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1371
1372 skb_pull(packet->skb, payload_offset);
1373 skb_trim(packet->skb, payload_len);
1374
1375 iwm_remove_iv(packet->skb, ticket->payload_offset);
1376
1377 hdr = (struct ieee80211_hdr *) packet->skb->data;
1378 if (ieee80211_is_data_qos(hdr->frame_control)) {
1379 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1380 * to the qos_ctl field in IEEE 802.11 headers. */
1381 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1382 packet->skb->data,
1383 ieee80211_hdrlen(hdr->frame_control) -
1384 IEEE80211_QOS_CTL_LEN);
1385 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1386 IEEE80211_QOS_CTL_LEN + 2);
1387 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1388 }
1389
1390 IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1391 packet->skb->data, packet->skb->len);
1392 }
1393
1394 static void classify8023(struct sk_buff *skb)
1395 {
1396 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1397
1398 if (ieee80211_is_data_qos(hdr->frame_control)) {
1399 u8 *qc = ieee80211_get_qos_ctl(hdr);
1400 /* frame has qos control */
1401 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1402 } else {
1403 skb->priority = 0;
1404 }
1405 }
1406
1407 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1408 struct iwm_rx_packet *packet,
1409 struct iwm_rx_ticket_node *ticket_node)
1410 {
1411 int ret;
1412 struct sk_buff *skb = packet->skb;
1413 struct wireless_dev *wdev = iwm_to_wdev(iwm);
1414 struct net_device *ndev = iwm_to_ndev(iwm);
1415
1416 IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1417
1418 switch (le16_to_cpu(ticket_node->ticket->action)) {
1419 case IWM_RX_TICKET_RELEASE:
1420 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1421 classify8023(skb);
1422 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1423 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1424 if (ret < 0) {
1425 IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1426 "%d\n", ret);
1427 break;
1428 }
1429
1430 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1431
1432 skb->dev = iwm_to_ndev(iwm);
1433 skb->protocol = eth_type_trans(skb, ndev);
1434 skb->ip_summed = CHECKSUM_NONE;
1435 memset(skb->cb, 0, sizeof(skb->cb));
1436
1437 ndev->stats.rx_packets++;
1438 ndev->stats.rx_bytes += skb->len;
1439
1440 if (netif_rx_ni(skb) == NET_RX_DROP) {
1441 IWM_ERR(iwm, "Packet dropped\n");
1442 ndev->stats.rx_dropped++;
1443 }
1444 break;
1445 case IWM_RX_TICKET_DROP:
1446 IWM_DBG_RX(iwm, DBG, "DROP packet\n");
1447 kfree_skb(packet->skb);
1448 break;
1449 default:
1450 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1451 le16_to_cpu(ticket_node->ticket->action));
1452 kfree_skb(packet->skb);
1453 }
1454
1455 kfree(packet);
1456 iwm_rx_ticket_node_free(ticket_node);
1457 }
1458
1459 /*
1460 * Rx data processing:
1461 *
1462 * We're receiving Rx packet from the LMAC, and Rx ticket from
1463 * the UMAC.
1464 * To forward a target data packet upstream (i.e. to the
1465 * kernel network stack), we must have received an Rx ticket
1466 * that tells us we're allowed to release this packet (ticket
1467 * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1468 * among other things, where valid data actually starts in the Rx
1469 * packet.
1470 */
1471 void iwm_rx_worker(struct work_struct *work)
1472 {
1473 struct iwm_priv *iwm;
1474 struct iwm_rx_ticket_node *ticket, *next;
1475
1476 iwm = container_of(work, struct iwm_priv, rx_worker);
1477
1478 /*
1479 * We go through the tickets list and if there is a pending
1480 * packet for it, we push it upstream.
1481 * We stop whenever a ticket is missing its packet, as we're
1482 * supposed to send the packets in order.
1483 */
1484 list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1485 struct iwm_rx_packet *packet =
1486 iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1487
1488 if (!packet) {
1489 IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1490 "to be handled first\n",
1491 le16_to_cpu(ticket->ticket->id));
1492 return;
1493 }
1494
1495 list_del(&ticket->node);
1496 list_del(&packet->node);
1497 iwm_rx_process_packet(iwm, packet, ticket);
1498 }
1499 }
1500
Linux with added FPC-III support