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ar9170: cleanup of bss_info_changed and beacon config
[deliverable/linux.git] / drivers / net / wireless / iwmc3200wifi / rx.c
CommitLineData
bb9f8692
ZY		 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
58static 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
67static 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 */
96static 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
bb9f8692
ZY		 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
124static 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
141static int iwm_ntf_init_complete(struct iwm_priv *iwm, u8 *buf,
142 unsigned long buf_size,
143 struct iwm_wifi_cmd *cmd)
144{
257862f3 145 struct wiphy *wiphy = iwm_to_wiphy(iwm);
bb9f8692
ZY		 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);
257862f3 149 bool blocked = (status == UMAC_NTFY_INIT_COMPLETE_STATUS_ERR);
bb9f8692 150
257862f3 151 if (blocked)
bb9f8692 152 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is on (radio off)\n");
257862f3 153 else
bb9f8692 154 IWM_DBG_NTF(iwm, DBG, "Hardware rf kill is off (radio on)\n");
257862f3
ZY		 155
156 wiphy_rfkill_set_hw_state(wiphy, blocked);
bb9f8692
ZY		 157
158 return 0;
159}
160
161static 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
194static 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
202static 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
211static 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
4fdd81f5
ZY		 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));
bb9f8692
ZY		 232
233 return 0;
234}
235
236
237static 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
273static 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
282static 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
296static 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
307static struct iwm_rx_ticket_node *
308iwm_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
331static 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
337static 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
352static 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
380void 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
401static 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
4fdd81f5
ZY		 421 IWM_DBG_RX(iwm, DBG, "TICKET RELEASE(%d)\n",
422 ticket->id);
bb9f8692
ZY		 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
449static 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
4fdd81f5 457 IWM_DBG_RX(iwm, DBG, "\n");
bb9f8692
ZY		 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
4fdd81f5
ZY		 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);
bb9f8692
ZY		 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 */
482static 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 set_bit(IWM_STATUS_ASSOCIATING, &iwm->status);
491
492 IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
493 start->bssid, le32_to_cpu(start->roam_reason));
494
495 wake_up_interruptible(&iwm->mlme_queue);
496
497 return 0;
498}
499
500static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
501 unsigned long buf_size,
502 struct iwm_wifi_cmd *cmd)
503{
504 struct iwm_umac_notif_assoc_complete *complete =
505 (struct iwm_umac_notif_assoc_complete *)buf;
bb9f8692
ZY		 506
507 IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
508 complete->bssid, complete->status);
509
bb9f8692
ZY		 510 clear_bit(IWM_STATUS_ASSOCIATING, &iwm->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 iwm_link_on(iwm);
519
9c7c0cdd
ZY		 520 if (iwm->conf.mode == UMAC_MODE_IBSS)
521 goto ibss;
522
9967d46a
SO		 523 cfg80211_connect_result(iwm_to_ndev(iwm),
524 complete->bssid,
b68518fc
ZY		 525 iwm->req_ie, iwm->req_ie_len,
526 iwm->resp_ie, iwm->resp_ie_len,
9967d46a 527 WLAN_STATUS_SUCCESS, GFP_KERNEL);
bb9f8692
ZY		 528 break;
529 case UMAC_ASSOC_COMPLETE_FAILURE:
530 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
531 memset(iwm->bssid, 0, ETH_ALEN);
532 iwm->channel = 0;
533
534 iwm_link_off(iwm);
9967d46a 535
9c7c0cdd
ZY		 536 if (iwm->conf.mode == UMAC_MODE_IBSS)
537 goto ibss;
538
9967d46a
SO		 539 cfg80211_connect_result(iwm_to_ndev(iwm), complete->bssid,
540 NULL, 0, NULL, 0,
541 WLAN_STATUS_UNSPECIFIED_FAILURE,
542 GFP_KERNEL);
bb9f8692
ZY		 543 default:
544 break;
545 }
546
9c7c0cdd 547 return 0;
bb9f8692 548
9c7c0cdd
ZY		 549 ibss:
550 cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
bb9f8692
ZY		 551 return 0;
552}
553
554static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
555 unsigned long buf_size,
556 struct iwm_wifi_cmd *cmd)
557{
558 struct iwm_umac_notif_profile_invalidate *invalid;
559
560 invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
561
562 IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n",
563 le32_to_cpu(invalid->reason));
564
565 clear_bit(IWM_STATUS_ASSOCIATING, &iwm->status);
566 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
567
568 iwm->umac_profile_active = 0;
569 memset(iwm->bssid, 0, ETH_ALEN);
570 iwm->channel = 0;
571
572 iwm_link_off(iwm);
573
574 wake_up_interruptible(&iwm->mlme_queue);
575
576 return 0;
577}
578
579static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
580 unsigned long buf_size,
581 struct iwm_wifi_cmd *cmd)
582{
583 int ret;
584 struct iwm_umac_notif_scan_complete *scan_complete =
585 (struct iwm_umac_notif_scan_complete *)buf;
586 u32 result = le32_to_cpu(scan_complete->result);
587
588 IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
589 le32_to_cpu(scan_complete->type),
590 le32_to_cpu(scan_complete->result),
591 scan_complete->seq_num);
592
593 if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
594 IWM_ERR(iwm, "Scan complete while device not scanning\n");
595 return -EIO;
596 }
597 if (!iwm->scan_request)
598 return 0;
599
600 ret = iwm_cfg80211_inform_bss(iwm);
601
602 cfg80211_scan_done(iwm->scan_request,
603 (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
604 iwm->scan_request = NULL;
605
606 return ret;
607}
608
609static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
610 unsigned long buf_size,
611 struct iwm_wifi_cmd *cmd)
612{
613 struct iwm_umac_notif_sta_info *umac_sta =
614 (struct iwm_umac_notif_sta_info *)buf;
615 struct iwm_sta_info *sta;
616 int i;
617
618 switch (le32_to_cpu(umac_sta->opcode)) {
619 case UMAC_OPCODE_ADD_MODIFY:
620 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
621
622 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
623 "addr = %pM, qos = %d\n",
624 sta->valid ? "Modify" : "Add",
625 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
626 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
627 umac_sta->mac_addr,
628 umac_sta->flags & UMAC_STA_FLAG_QOS);
629
630 sta->valid = 1;
631 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
632 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
633 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
634 break;
635 case UMAC_OPCODE_REMOVE:
636 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
637 "addr = %pM\n",
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
642 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
643
644 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
645 sta->valid = 0;
646
647 break;
648 case UMAC_OPCODE_CLEAR_ALL:
649 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
650 iwm->sta_table[i].valid = 0;
651
652 break;
653 default:
654 break;
655 }
656
657 return 0;
658}
659
660static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
661 unsigned long buf_size,
662 struct iwm_wifi_cmd *cmd)
663{
664 struct wiphy *wiphy = iwm_to_wiphy(iwm);
665 struct ieee80211_mgmt *mgmt;
666 struct iwm_umac_notif_bss_info *umac_bss =
667 (struct iwm_umac_notif_bss_info *)buf;
668 struct ieee80211_channel *channel;
669 struct ieee80211_supported_band *band;
670 struct iwm_bss_info *bss, *next;
671 s32 signal;
672 int freq;
673 u16 frame_len = le16_to_cpu(umac_bss->frame_len);
674 size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
675
676 mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
677
678 IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
679 IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
680 IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
681 le32_to_cpu(umac_bss->timestamp));
682 IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
683 le16_to_cpu(umac_bss->table_idx));
684 IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
685 IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
686 IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
687 IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
688
689 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
690 if (bss->bss->table_idx == umac_bss->table_idx)
691 break;
692
693 if (&bss->node != &iwm->bss_list) {
694 /* Remove the old BSS entry, we will add it back later. */
695 list_del(&bss->node);
696 kfree(bss->bss);
697 } else {
698 /* New BSS entry */
699
700 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
701 if (!bss) {
702 IWM_ERR(iwm, "Couldn't allocate bss_info\n");
703 return -ENOMEM;
704 }
705 }
706
707 bss->bss = kzalloc(bss_len, GFP_KERNEL);
708 if (!bss) {
709 kfree(bss);
710 IWM_ERR(iwm, "Couldn't allocate bss\n");
711 return -ENOMEM;
712 }
713
714 INIT_LIST_HEAD(&bss->node);
715 memcpy(bss->bss, umac_bss, bss_len);
716
717 if (umac_bss->band == UMAC_BAND_2GHZ)
718 band = wiphy->bands[IEEE80211_BAND_2GHZ];
719 else if (umac_bss->band == UMAC_BAND_5GHZ)
720 band = wiphy->bands[IEEE80211_BAND_5GHZ];
721 else {
722 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
723 goto err;
724 }
725
726 freq = ieee80211_channel_to_frequency(umac_bss->channel);
727 channel = ieee80211_get_channel(wiphy, freq);
728 signal = umac_bss->rssi * 100;
729
730 bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
731 mgmt, frame_len,
732 signal, GFP_KERNEL);
733 if (!bss->cfg_bss)
734 goto err;
735
736 list_add_tail(&bss->node, &iwm->bss_list);
737
738 return 0;
739 err:
740 kfree(bss->bss);
741 kfree(bss);
742
743 return -EINVAL;
744}
745
746static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
747 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
748{
749 struct iwm_umac_notif_bss_removed *bss_rm =
750 (struct iwm_umac_notif_bss_removed *)buf;
751 struct iwm_bss_info *bss, *next;
752 u16 table_idx;
753 int i;
754
755 for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
756 table_idx = (le16_to_cpu(bss_rm->entries[i])
757 & IWM_BSS_REMOVE_INDEX_MSK);
758 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
759 if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
760 struct ieee80211_mgmt *mgmt;
761
762 mgmt = (struct ieee80211_mgmt *)
763 (bss->bss->frame_buf);
764 IWM_DBG_MLME(iwm, ERR,
765 "BSS removed: %pM\n",
766 mgmt->bssid);
767 list_del(&bss->node);
768 kfree(bss->bss);
769 kfree(bss);
770 }
771 }
772
773 return 0;
774}
775
776static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
777 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
778{
779 struct iwm_umac_notif_mgt_frame *mgt_frame =
b68518fc 780 (struct iwm_umac_notif_mgt_frame *)buf;
bb9f8692
ZY		 781 struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
782 u8 *ie;
bb9f8692
ZY		 783
784 IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
785 le16_to_cpu(mgt_frame->len));
786
787 if (ieee80211_is_assoc_req(mgt->frame_control)) {
788 ie = mgt->u.assoc_req.variable;;
b68518fc
ZY		 789 iwm->req_ie_len =
790 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
791 kfree(iwm->req_ie);
792 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
793 iwm->req_ie_len, GFP_KERNEL);
bb9f8692
ZY		 794 } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
795 ie = mgt->u.reassoc_req.variable;;
b68518fc
ZY		 796 iwm->req_ie_len =
797 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
798 kfree(iwm->req_ie);
799 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
800 iwm->req_ie_len, GFP_KERNEL);
bb9f8692
ZY		 801 } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
802 ie = mgt->u.assoc_resp.variable;;
b68518fc
ZY		 803 iwm->resp_ie_len =
804 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
805 kfree(iwm->resp_ie);
806 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
807 iwm->resp_ie_len, GFP_KERNEL);
bb9f8692
ZY		 808 } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
809 ie = mgt->u.reassoc_resp.variable;;
b68518fc
ZY		 810 iwm->resp_ie_len =
811 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
812 kfree(iwm->resp_ie);
813 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
814 iwm->resp_ie_len, GFP_KERNEL);
bb9f8692
ZY		 815 } else {
816 IWM_ERR(iwm, "Unsupported management frame");
817 return 0;
818 }
819
bb9f8692
ZY		 820 return 0;
821}
822
823static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
824 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
825{
826 struct iwm_umac_notif_wifi_if *notif =
827 (struct iwm_umac_notif_wifi_if *)buf;
828
829 switch (notif->status) {
830 case WIFI_IF_NTFY_ASSOC_START:
831 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
832 case WIFI_IF_NTFY_ASSOC_COMPLETE:
833 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
834 case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
835 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
836 case WIFI_IF_NTFY_CONNECTION_TERMINATED:
837 IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
838 break;
839 case WIFI_IF_NTFY_SCAN_COMPLETE:
840 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
841 case WIFI_IF_NTFY_STA_TABLE_CHANGE:
842 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
843 case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
844 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
845 break;
846 case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
847 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
848 case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
849 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
850 break;
851 case WIFI_IF_NTFY_MGMT_FRAME:
852 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
853 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
854 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
855 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
856 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
857 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
858 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
859 case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
860 case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
861 case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
862 case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
863 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
864 notif->status);
865 break;
866 default:
867 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
868 break;
869 }
870
871 return 0;
872}
873
874#define IWM_STATS_UPDATE_INTERVAL (2 * HZ)
875
876static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
877 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
878{
879 struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
880 struct iw_statistics *wstats = &iwm->wstats;
881 u16 max_rate = 0;
882 int i;
883
884 IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
885
886 if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
887 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
888 max_rate = max_t(u16, max_rate,
889 max(le16_to_cpu(stats->tx_rate[i]),
890 le16_to_cpu(stats->rx_rate[i])));
891 }
892 /* UMAC passes rate info multiplies by 2 */
893 iwm->rate = max_rate >> 1;
894 }
257862f3 895 iwm->txpower = le32_to_cpu(stats->tx_power);
bb9f8692
ZY		 896
897 wstats->status = 0;
898
899 wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
900 wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
901 wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
902 wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
903
904 wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
905
906 /* according to cfg80211 */
907 if (stats->rssi_dbm < -110)
908 wstats->qual.qual = 0;
909 else if (stats->rssi_dbm > -40)
910 wstats->qual.qual = 70;
911 else
912 wstats->qual.qual = stats->rssi_dbm + 110;
913
914 wstats->qual.level = stats->rssi_dbm;
915 wstats->qual.noise = stats->noise_dbm;
916 wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
917
918 schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
919
920 mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
921
922 return 0;
923}
924
925static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
926 unsigned long buf_size,
927 struct iwm_wifi_cmd *cmd)
928{
929 struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
930 (struct iwm_umac_cmd_eeprom_proxy *)
931 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
932 struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
933 u32 hdr_offset = le32_to_cpu(hdr->offset);
934 u32 hdr_len = le32_to_cpu(hdr->len);
935 u32 hdr_type = le32_to_cpu(hdr->type);
936
937 IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
938 hdr_type, hdr_len, hdr_offset);
939
940 if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
941 return -EINVAL;
942
bb9f8692
ZY		 943 switch (hdr_type) {
944 case IWM_UMAC_CMD_EEPROM_TYPE_READ:
945 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
946 break;
947 case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
948 default:
949 return -ENOTSUPP;
950 }
951
952 return 0;
953}
954
955static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
956 unsigned long buf_size,
957 struct iwm_wifi_cmd *cmd)
958{
959 struct iwm_umac_cmd_get_channel_list *ch_list =
960 (struct iwm_umac_cmd_get_channel_list *)
961 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
962 struct wiphy *wiphy = iwm_to_wiphy(iwm);
963 struct ieee80211_supported_band *band;
964 int i;
965
966 band = wiphy->bands[IEEE80211_BAND_2GHZ];
967
968 for (i = 0; i < band->n_channels; i++) {
969 unsigned long ch_mask_0 =
970 le32_to_cpu(ch_list->ch[0].channels_mask);
971 unsigned long ch_mask_2 =
972 le32_to_cpu(ch_list->ch[2].channels_mask);
973
974 if (!test_bit(i, &ch_mask_0))
975 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
976
977 if (!test_bit(i, &ch_mask_2))
978 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
979 }
980
981 band = wiphy->bands[IEEE80211_BAND_5GHZ];
982
983 for (i = 0; i < min(band->n_channels, 32); i++) {
984 unsigned long ch_mask_1 =
985 le32_to_cpu(ch_list->ch[1].channels_mask);
986 unsigned long ch_mask_3 =
987 le32_to_cpu(ch_list->ch[3].channels_mask);
988
989 if (!test_bit(i, &ch_mask_1))
990 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
991
992 if (!test_bit(i, &ch_mask_3))
993 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
994 }
995
996 return 0;
997}
998
999static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1000 unsigned long buf_size,
1001 struct iwm_wifi_cmd *cmd)
1002{
1003 struct iwm_umac_wifi_if *hdr =
1004 (struct iwm_umac_wifi_if *)cmd->buf.payload;
1005
1006 IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
a70742f1
SO		 1007 "oid is 0x%x\n", hdr->oid);
1008
1009 if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1010 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1011 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1012 } else
1013 return -EINVAL;
bb9f8692
ZY		 1014
1015 switch (hdr->oid) {
1016 case UMAC_WIFI_IF_CMD_SET_PROFILE:
1017 iwm->umac_profile_active = 1;
bb9f8692
ZY		 1018 break;
1019 default:
1020 break;
1021 }
1022
1023 return 0;
1024}
1025
1026static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1027 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1028{
257862f3 1029 struct wiphy *wiphy = iwm_to_wiphy(iwm);
bb9f8692
ZY		 1030 struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1031 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1032 u32 flags = le32_to_cpu(state->flags);
1033
1034 IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1035 flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1036 flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1037
257862f3 1038 wiphy_rfkill_set_hw_state(wiphy, flags & IWM_CARD_STATE_HW_DISABLED);
bb9f8692
ZY		 1039
1040 return 0;
1041}
1042
1043static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1044 unsigned long buf_size)
1045{
1046 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1047 struct iwm_wifi_cmd *cmd;
1048 u8 source, cmd_id;
1049 u16 seq_num;
1050 u32 count;
1051 u8 resp;
1052
1053 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1054 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1055
1056 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1057 if (source >= IWM_SRC_NUM) {
1058 IWM_CRIT(iwm, "invalid source %d\n", source);
1059 return -EINVAL;
1060 }
1061
1062 count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1063 count += sizeof(struct iwm_umac_wifi_in_hdr) -
1064 sizeof(struct iwm_dev_cmd_hdr);
1065 if (count > buf_size) {
1066 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1067 return -EINVAL;
1068 }
1069
1070 resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1071
1072 seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1073
1074 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1075 cmd_id, source, seq_num);
1076
1077 /*
1078 * If this is a response to a previously sent command, there must
1079 * be a pending command for this sequence number.
1080 */
1081 cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1082
1083 /* Notify the caller only for sync commands. */
1084 switch (source) {
1085 case UMAC_HDI_IN_SOURCE_FHRX:
1086 if (iwm->lmac_handlers[cmd_id] &&
1087 test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1088 return iwm_notif_send(iwm, cmd, cmd_id, source,
1089 buf, count);
1090 break;
1091 case UMAC_HDI_IN_SOURCE_FW:
1092 if (iwm->umac_handlers[cmd_id] &&
1093 test_bit(cmd_id, &iwm->umac_handler_map[0]))
1094 return iwm_notif_send(iwm, cmd, cmd_id, source,
1095 buf, count);
1096 break;
1097 case UMAC_HDI_IN_SOURCE_UDMA:
1098 break;
1099 }
1100
1101 return iwm_rx_handle_resp(iwm, buf, count, cmd);
1102}
1103
1104int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1105 struct iwm_wifi_cmd *cmd)
1106{
1107 u8 source, cmd_id;
1108 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1109 int ret = 0;
1110
1111 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1112 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1113
1114 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1115
1116 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1117
1118 switch (source) {
1119 case UMAC_HDI_IN_SOURCE_FHRX:
1120 if (iwm->lmac_handlers[cmd_id])
1121 ret = iwm->lmac_handlers[cmd_id]
1122 (iwm, buf, buf_size, cmd);
1123 break;
1124 case UMAC_HDI_IN_SOURCE_FW:
1125 if (iwm->umac_handlers[cmd_id])
1126 ret = iwm->umac_handlers[cmd_id]
1127 (iwm, buf, buf_size, cmd);
1128 break;
1129 case UMAC_HDI_IN_SOURCE_UDMA:
1130 ret = -EINVAL;
1131 break;
1132 }
1133
1134 kfree(cmd);
1135
1136 return ret;
1137}
1138
1139static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1140 unsigned long buf_size)
1141{
1142 u8 seq_num;
1143 struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1144 struct iwm_nonwifi_cmd *cmd, *next;
1145
1146 seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1147
1148 /*
1149 * We received a non wifi answer.
1150 * Let's check if there's a pending command for it, and if so
1151 * replace the command payload with the buffer, and then wake the
1152 * callers up.
1153 * That means we only support synchronised non wifi command response
1154 * schemes.
1155 */
1156 list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1157 if (cmd->seq_num == seq_num) {
1158 cmd->resp_received = 1;
1159 cmd->buf.len = buf_size;
1160 memcpy(cmd->buf.hdr, buf, buf_size);
1161 wake_up_interruptible(&iwm->nonwifi_queue);
1162 }
1163
1164 return 0;
1165}
1166
1167static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1168 unsigned long buf_size)
1169{
1170 int ret = 0;
1171 u8 op_code;
1172 unsigned long buf_offset = 0;
1173 struct iwm_udma_in_hdr *hdr;
1174
1175 /*
1176 * To allow for a more efficient bus usage, UMAC
1177 * messages are encapsulated into UDMA ones. This
1178 * way we can have several UMAC messages in one bus
1179 * transfer.
1180 * A UDMA frame size is always aligned on 16 bytes,
1181 * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1182 * word. This is how we parse a bus frame into several
1183 * UDMA ones.
1184 */
1185 while (buf_offset < buf_size) {
1186
1187 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1188
1189 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1190 IWM_DBG_RX(iwm, DBG, "End of frame\n");
1191 break;
1192 }
1193
1194 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1195
1196 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1197
1198 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1199 ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1200 buf_size - buf_offset);
1201 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1202 if (GET_VAL32(hdr->cmd,
1203 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1204 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1205 IWM_ERR(iwm, "Incorrect hw signature\n");
1206 return -EINVAL;
1207 }
1208 ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1209 buf_size - buf_offset);
1210 } else {
1211 IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1212 ret |= -EINVAL;
1213 }
1214
1215 buf_offset += iwm_rx_resp_size(hdr);
1216 }
1217
1218 return ret;
1219}
1220
1221int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1222{
1223 struct iwm_udma_in_hdr *hdr;
1224
1225 hdr = (struct iwm_udma_in_hdr *)buf;
1226
1227 switch (le32_to_cpu(hdr->cmd)) {
1228 case UMAC_REBOOT_BARKER:
1229 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1230 IWM_SRC_UDMA, buf, buf_size);
1231 case UMAC_ACK_BARKER:
1232 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1233 IWM_SRC_UDMA, NULL, 0);
1234 default:
1235 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1236 return iwm_rx_handle_umac(iwm, buf, buf_size);
1237 }
1238
1239 return 0;
1240}
1241
1242static const iwm_handler iwm_umac_handlers[] =
1243{
1244 [UMAC_NOTIFY_OPCODE_ERROR] = iwm_ntf_error,
1245 [UMAC_NOTIFY_OPCODE_ALIVE] = iwm_ntf_umac_alive,
1246 [UMAC_NOTIFY_OPCODE_INIT_COMPLETE] = iwm_ntf_init_complete,
1247 [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS] = iwm_ntf_wifi_status,
1248 [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_mlme,
1249 [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC] = iwm_ntf_tx_credit_update,
1250 [UMAC_NOTIFY_OPCODE_RX_TICKET] = iwm_ntf_rx_ticket,
1251 [UMAC_CMD_OPCODE_RESET] = iwm_ntf_umac_reset,
1252 [UMAC_NOTIFY_OPCODE_STATS] = iwm_ntf_statistics,
1253 [UMAC_CMD_OPCODE_EEPROM_PROXY] = iwm_ntf_eeprom_proxy,
1254 [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST] = iwm_ntf_channel_info_list,
1255 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1256 [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_wifi_if_wrapper,
1257};
1258
1259static const iwm_handler iwm_lmac_handlers[] =
1260{
1261 [REPLY_TX] = iwm_ntf_tx,
1262 [REPLY_ALIVE] = iwm_ntf_lmac_version,
1263 [CALIBRATION_RES_NOTIFICATION] = iwm_ntf_calib_res,
1264 [CALIBRATION_COMPLETE_NOTIFICATION] = iwm_ntf_calib_complete,
1265 [CALIBRATION_CFG_CMD] = iwm_ntf_calib_cfg,
1266 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1267 [CARD_STATE_NOTIFICATION] = iwm_ntf_card_state,
1268};
1269
1270void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1271{
1272 iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1273 iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1274}
1275
1276static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1277{
1278 struct ieee80211_hdr *hdr;
1279 unsigned int hdr_len;
1280
1281 hdr = (struct ieee80211_hdr *)skb->data;
1282
1283 if (!ieee80211_has_protected(hdr->frame_control))
1284 return;
1285
1286 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1287 if (hdr_total_len <= hdr_len)
1288 return;
1289
1290 memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1291 skb_pull(skb, (hdr_total_len - hdr_len));
1292}
1293
1294static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1295 struct iwm_rx_packet *packet,
1296 struct iwm_rx_ticket_node *ticket_node)
1297{
1298 u32 payload_offset = 0, payload_len;
1299 struct iwm_rx_ticket *ticket = ticket_node->ticket;
1300 struct iwm_rx_mpdu_hdr *mpdu_hdr;
1301 struct ieee80211_hdr *hdr;
1302
1303 mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1304 payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1305 /* Padding is 0 or 2 bytes */
1306 payload_len = le16_to_cpu(mpdu_hdr->len) +
1307 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1308 payload_len -= ticket->tail_len;
1309
1310 IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1311 "ticket offset:%d ticket tail len:%d\n",
1312 payload_len, payload_offset, ticket->payload_offset,
1313 ticket->tail_len);
1314
1315 IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1316
1317 skb_pull(packet->skb, payload_offset);
1318 skb_trim(packet->skb, payload_len);
1319
1320 iwm_remove_iv(packet->skb, ticket->payload_offset);
1321
1322 hdr = (struct ieee80211_hdr *) packet->skb->data;
1323 if (ieee80211_is_data_qos(hdr->frame_control)) {
1324 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1325 * to the qos_ctl field in IEEE 802.11 headers. */
1326 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1327 packet->skb->data,
1328 ieee80211_hdrlen(hdr->frame_control) -
1329 IEEE80211_QOS_CTL_LEN);
1330 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1331 IEEE80211_QOS_CTL_LEN + 2);
1332 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1333 }
1334
1335 IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1336 packet->skb->data, packet->skb->len);
1337}
1338
1339static void classify8023(struct sk_buff *skb)
1340{
1341 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1342
1343 if (ieee80211_is_data_qos(hdr->frame_control)) {
1344 u8 *qc = ieee80211_get_qos_ctl(hdr);
1345 /* frame has qos control */
1346 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1347 } else {
1348 skb->priority = 0;
1349 }
1350}
1351
1352static void iwm_rx_process_packet(struct iwm_priv *iwm,
1353 struct iwm_rx_packet *packet,
1354 struct iwm_rx_ticket_node *ticket_node)
1355{
1356 int ret;
1357 struct sk_buff *skb = packet->skb;
1358 struct wireless_dev *wdev = iwm_to_wdev(iwm);
1359 struct net_device *ndev = iwm_to_ndev(iwm);
1360
1361 IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1362
1363 switch (le16_to_cpu(ticket_node->ticket->action)) {
1364 case IWM_RX_TICKET_RELEASE:
1365 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1366 classify8023(skb);
1367 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1368 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1369 if (ret < 0) {
1370 IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1371 "%d\n", ret);
1372 break;
1373 }
1374
1375 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1376
1377 skb->dev = iwm_to_ndev(iwm);
1378 skb->protocol = eth_type_trans(skb, ndev);
3a0e4851 1379 skb->ip_summed = CHECKSUM_NONE;
bb9f8692
ZY		 1380 memset(skb->cb, 0, sizeof(skb->cb));
1381
1382 ndev->stats.rx_packets++;
1383 ndev->stats.rx_bytes += skb->len;
1384
dd13fd64 1385 if (netif_rx_ni(skb) == NET_RX_DROP) {
bb9f8692
ZY		 1386 IWM_ERR(iwm, "Packet dropped\n");
1387 ndev->stats.rx_dropped++;
1388 }
1389 break;
1390 case IWM_RX_TICKET_DROP:
1391 IWM_DBG_RX(iwm, DBG, "DROP packet\n");
1392 kfree_skb(packet->skb);
1393 break;
1394 default:
1395 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1396 le16_to_cpu(ticket_node->ticket->action));
1397 kfree_skb(packet->skb);
1398 }
1399
1400 kfree(packet);
1401 iwm_rx_ticket_node_free(ticket_node);
1402}
1403
1404/*
1405 * Rx data processing:
1406 *
1407 * We're receiving Rx packet from the LMAC, and Rx ticket from
1408 * the UMAC.
1409 * To forward a target data packet upstream (i.e. to the
1410 * kernel network stack), we must have received an Rx ticket
1411 * that tells us we're allowed to release this packet (ticket
1412 * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1413 * among other things, where valid data actually starts in the Rx
1414 * packet.
1415 */
1416void iwm_rx_worker(struct work_struct *work)
1417{
1418 struct iwm_priv *iwm;
1419 struct iwm_rx_ticket_node *ticket, *next;
1420
1421 iwm = container_of(work, struct iwm_priv, rx_worker);
1422
1423 /*
1424 * We go through the tickets list and if there is a pending
1425 * packet for it, we push it upstream.
1426 * We stop whenever a ticket is missing its packet, as we're
1427 * supposed to send the packets in order.
1428 */
1429 list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1430 struct iwm_rx_packet *packet =
1431 iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1432
1433 if (!packet) {
1434 IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1435 "to be handled first\n",
1436 le16_to_cpu(ticket->ticket->id));
1437 return;
1438 }
1439
1440 list_del(&ticket->node);
1441 list_del(&packet->node);
1442 iwm_rx_process_packet(iwm, packet, ticket);
1443 }
1444}
1445
Linux kernel - Deliverables
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