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iwmc3200wifi: handle coexistence radio notification
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwmc3200wifi / rx.c
blob3ad95dc0dd8dd956de9ba0e846b4995cc7b01e05
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 %s(%d)\n",
426 ticket->action == IWM_RX_TICKET_RELEASE ?
427 "RELEASE" : "DROP",
428 ticket->id);
429 list_add_tail(&ticket_node->node, &iwm->rx_tickets);
430
431 /*
432 * We received an Rx ticket, most likely there's
433 * a packet pending for it, it's not worth going
434 * through the packet hash list to double check.
435 * Let's just fire the rx worker..
436 */
437 schedule_rx = 1;
438
439 break;
440
441 default:
442 IWM_ERR(iwm, "Invalid RX ticket action: 0x%x\n",
443 ticket->action);
444 }
445
446 ticket++;
447 }
448
449 if (schedule_rx)
450 queue_work(iwm->rx_wq, &iwm->rx_worker);
451
452 return 0;
453 }
454
455 static int iwm_ntf_rx_packet(struct iwm_priv *iwm, u8 *buf,
456 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
457 {
458 struct iwm_umac_wifi_in_hdr *wifi_hdr;
459 struct iwm_rx_packet *packet;
460 u16 id, buf_offset;
461 u32 packet_size;
462
463 IWM_DBG_RX(iwm, DBG, "\n");
464
465 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
466 id = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
467 buf_offset = sizeof(struct iwm_umac_wifi_in_hdr);
468 packet_size = buf_size - sizeof(struct iwm_umac_wifi_in_hdr);
469
470 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, seqnum: %d, packet size: %d\n",
471 wifi_hdr->sw_hdr.cmd.cmd, id, packet_size);
472 IWM_DBG_RX(iwm, DBG, "Packet id: %d\n", id);
473 IWM_HEXDUMP(iwm, DBG, RX, "PACKET: ", buf + buf_offset, packet_size);
474
475 packet = iwm_rx_packet_alloc(iwm, buf + buf_offset, packet_size, id);
476 if (IS_ERR(packet))
477 return PTR_ERR(packet);
478
479 list_add_tail(&packet->node, &iwm->rx_packets[IWM_RX_ID_GET_HASH(id)]);
480
481 /* We might (unlikely) have received the packet _after_ the ticket */
482 queue_work(iwm->rx_wq, &iwm->rx_worker);
483
484 return 0;
485 }
486
487 /* MLME handlers */
488 static int iwm_mlme_assoc_start(struct iwm_priv *iwm, u8 *buf,
489 unsigned long buf_size,
490 struct iwm_wifi_cmd *cmd)
491 {
492 struct iwm_umac_notif_assoc_start *start;
493
494 start = (struct iwm_umac_notif_assoc_start *)buf;
495
496 IWM_DBG_MLME(iwm, INFO, "Association with %pM Started, reason: %d\n",
497 start->bssid, le32_to_cpu(start->roam_reason));
498
499 wake_up_interruptible(&iwm->mlme_queue);
500
501 return 0;
502 }
503
504 static u8 iwm_is_open_wep_profile(struct iwm_priv *iwm)
505 {
506 if ((iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_40 ||
507 iwm->umac_profile->sec.ucast_cipher == UMAC_CIPHER_TYPE_WEP_104) &&
508 (iwm->umac_profile->sec.ucast_cipher ==
509 iwm->umac_profile->sec.mcast_cipher) &&
510 (iwm->umac_profile->sec.auth_type == UMAC_AUTH_TYPE_OPEN))
511 return 1;
512
513 return 0;
514 }
515
516 static int iwm_mlme_assoc_complete(struct iwm_priv *iwm, u8 *buf,
517 unsigned long buf_size,
518 struct iwm_wifi_cmd *cmd)
519 {
520 struct iwm_umac_notif_assoc_complete *complete =
521 (struct iwm_umac_notif_assoc_complete *)buf;
522
523 IWM_DBG_MLME(iwm, INFO, "Association with %pM completed, status: %d\n",
524 complete->bssid, complete->status);
525
526 switch (le32_to_cpu(complete->status)) {
527 case UMAC_ASSOC_COMPLETE_SUCCESS:
528 set_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
529 memcpy(iwm->bssid, complete->bssid, ETH_ALEN);
530 iwm->channel = complete->channel;
531
532 /* Internal roaming state, avoid notifying SME. */
533 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
534 && iwm->conf.mode == UMAC_MODE_BSS) {
535 cancel_delayed_work(&iwm->disconnect);
536 cfg80211_roamed(iwm_to_ndev(iwm),
537 complete->bssid,
538 iwm->req_ie, iwm->req_ie_len,
539 iwm->resp_ie, iwm->resp_ie_len,
540 GFP_KERNEL);
541 break;
542 }
543
544 iwm_link_on(iwm);
545
546 if (iwm->conf.mode == UMAC_MODE_IBSS)
547 goto ibss;
548
549 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
550 cfg80211_connect_result(iwm_to_ndev(iwm),
551 complete->bssid,
552 iwm->req_ie, iwm->req_ie_len,
553 iwm->resp_ie, iwm->resp_ie_len,
554 WLAN_STATUS_SUCCESS,
555 GFP_KERNEL);
556 else
557 cfg80211_roamed(iwm_to_ndev(iwm),
558 complete->bssid,
559 iwm->req_ie, iwm->req_ie_len,
560 iwm->resp_ie, iwm->resp_ie_len,
561 GFP_KERNEL);
562 break;
563 case UMAC_ASSOC_COMPLETE_FAILURE:
564 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
565 memset(iwm->bssid, 0, ETH_ALEN);
566 iwm->channel = 0;
567
568 /* Internal roaming state, avoid notifying SME. */
569 if (!test_and_clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status)
570 && iwm->conf.mode == UMAC_MODE_BSS) {
571 cancel_delayed_work(&iwm->disconnect);
572 break;
573 }
574
575 iwm_link_off(iwm);
576
577 if (iwm->conf.mode == UMAC_MODE_IBSS)
578 goto ibss;
579
580 if (!test_bit(IWM_STATUS_RESETTING, &iwm->status))
581 if (!iwm_is_open_wep_profile(iwm)) {
582 cfg80211_connect_result(iwm_to_ndev(iwm),
583 complete->bssid,
584 NULL, 0, NULL, 0,
585 WLAN_STATUS_UNSPECIFIED_FAILURE,
586 GFP_KERNEL);
587 } else {
588 /* Let's try shared WEP auth */
589 IWM_ERR(iwm, "Trying WEP shared auth\n");
590 schedule_work(&iwm->auth_retry_worker);
591 }
592 else
593 cfg80211_disconnected(iwm_to_ndev(iwm), 0, NULL, 0,
594 GFP_KERNEL);
595 break;
596 default:
597 break;
598 }
599
600 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
601 return 0;
602
603 ibss:
604 cfg80211_ibss_joined(iwm_to_ndev(iwm), iwm->bssid, GFP_KERNEL);
605 clear_bit(IWM_STATUS_RESETTING, &iwm->status);
606 return 0;
607 }
608
609 static int iwm_mlme_profile_invalidate(struct iwm_priv *iwm, u8 *buf,
610 unsigned long buf_size,
611 struct iwm_wifi_cmd *cmd)
612 {
613 struct iwm_umac_notif_profile_invalidate *invalid;
614 u32 reason;
615
616 invalid = (struct iwm_umac_notif_profile_invalidate *)buf;
617 reason = le32_to_cpu(invalid->reason);
618
619 IWM_DBG_MLME(iwm, INFO, "Profile Invalidated. Reason: %d\n", reason);
620
621 if (reason != UMAC_PROFILE_INVALID_REQUEST &&
622 test_bit(IWM_STATUS_SME_CONNECTING, &iwm->status))
623 cfg80211_connect_result(iwm_to_ndev(iwm), NULL, NULL, 0, NULL,
624 0, WLAN_STATUS_UNSPECIFIED_FAILURE,
625 GFP_KERNEL);
626
627 clear_bit(IWM_STATUS_SME_CONNECTING, &iwm->status);
628 clear_bit(IWM_STATUS_ASSOCIATED, &iwm->status);
629
630 iwm->umac_profile_active = 0;
631 memset(iwm->bssid, 0, ETH_ALEN);
632 iwm->channel = 0;
633
634 iwm_link_off(iwm);
635
636 wake_up_interruptible(&iwm->mlme_queue);
637
638 return 0;
639 }
640
641 #define IWM_DISCONNECT_INTERVAL (5 * HZ)
642
643 static int iwm_mlme_connection_terminated(struct iwm_priv *iwm, u8 *buf,
644 unsigned long buf_size,
645 struct iwm_wifi_cmd *cmd)
646 {
647 IWM_DBG_MLME(iwm, DBG, "Connection terminated\n");
648
649 schedule_delayed_work(&iwm->disconnect, IWM_DISCONNECT_INTERVAL);
650
651 return 0;
652 }
653
654 static int iwm_mlme_scan_complete(struct iwm_priv *iwm, u8 *buf,
655 unsigned long buf_size,
656 struct iwm_wifi_cmd *cmd)
657 {
658 int ret;
659 struct iwm_umac_notif_scan_complete *scan_complete =
660 (struct iwm_umac_notif_scan_complete *)buf;
661 u32 result = le32_to_cpu(scan_complete->result);
662
663 IWM_DBG_MLME(iwm, INFO, "type:0x%x result:0x%x seq:%d\n",
664 le32_to_cpu(scan_complete->type),
665 le32_to_cpu(scan_complete->result),
666 scan_complete->seq_num);
667
668 if (!test_and_clear_bit(IWM_STATUS_SCANNING, &iwm->status)) {
669 IWM_ERR(iwm, "Scan complete while device not scanning\n");
670 return -EIO;
671 }
672 if (!iwm->scan_request)
673 return 0;
674
675 ret = iwm_cfg80211_inform_bss(iwm);
676
677 cfg80211_scan_done(iwm->scan_request,
678 (result & UMAC_SCAN_RESULT_ABORTED) ? 1 : !!ret);
679 iwm->scan_request = NULL;
680
681 return ret;
682 }
683
684 static int iwm_mlme_update_sta_table(struct iwm_priv *iwm, u8 *buf,
685 unsigned long buf_size,
686 struct iwm_wifi_cmd *cmd)
687 {
688 struct iwm_umac_notif_sta_info *umac_sta =
689 (struct iwm_umac_notif_sta_info *)buf;
690 struct iwm_sta_info *sta;
691 int i;
692
693 switch (le32_to_cpu(umac_sta->opcode)) {
694 case UMAC_OPCODE_ADD_MODIFY:
695 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
696
697 IWM_DBG_MLME(iwm, INFO, "%s STA: ID = %d, Color = %d, "
698 "addr = %pM, qos = %d\n",
699 sta->valid ? "Modify" : "Add",
700 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
701 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
702 umac_sta->mac_addr,
703 umac_sta->flags & UMAC_STA_FLAG_QOS);
704
705 sta->valid = 1;
706 sta->qos = umac_sta->flags & UMAC_STA_FLAG_QOS;
707 sta->color = GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR);
708 memcpy(sta->addr, umac_sta->mac_addr, ETH_ALEN);
709 break;
710 case UMAC_OPCODE_REMOVE:
711 IWM_DBG_MLME(iwm, INFO, "Remove STA: ID = %d, Color = %d, "
712 "addr = %pM\n",
713 GET_VAL8(umac_sta->sta_id, LMAC_STA_ID),
714 GET_VAL8(umac_sta->sta_id, LMAC_STA_COLOR),
715 umac_sta->mac_addr);
716
717 sta = &iwm->sta_table[GET_VAL8(umac_sta->sta_id, LMAC_STA_ID)];
718
719 if (!memcmp(sta->addr, umac_sta->mac_addr, ETH_ALEN))
720 sta->valid = 0;
721
722 break;
723 case UMAC_OPCODE_CLEAR_ALL:
724 for (i = 0; i < IWM_STA_TABLE_NUM; i++)
725 iwm->sta_table[i].valid = 0;
726
727 break;
728 default:
729 break;
730 }
731
732 return 0;
733 }
734
735 static int iwm_mlme_medium_lost(struct iwm_priv *iwm, u8 *buf,
736 unsigned long buf_size,
737 struct iwm_wifi_cmd *cmd)
738 {
739 struct wiphy *wiphy = iwm_to_wiphy(iwm);
740
741 IWM_DBG_NTF(iwm, DBG, "WiFi/WiMax coexistence radio is OFF\n");
742
743 wiphy_rfkill_set_hw_state(wiphy, true);
744
745 return 0;
746 }
747
748 static int iwm_mlme_update_bss_table(struct iwm_priv *iwm, u8 *buf,
749 unsigned long buf_size,
750 struct iwm_wifi_cmd *cmd)
751 {
752 struct wiphy *wiphy = iwm_to_wiphy(iwm);
753 struct ieee80211_mgmt *mgmt;
754 struct iwm_umac_notif_bss_info *umac_bss =
755 (struct iwm_umac_notif_bss_info *)buf;
756 struct ieee80211_channel *channel;
757 struct ieee80211_supported_band *band;
758 struct iwm_bss_info *bss, *next;
759 s32 signal;
760 int freq;
761 u16 frame_len = le16_to_cpu(umac_bss->frame_len);
762 size_t bss_len = sizeof(struct iwm_umac_notif_bss_info) + frame_len;
763
764 mgmt = (struct ieee80211_mgmt *)(umac_bss->frame_buf);
765
766 IWM_DBG_MLME(iwm, DBG, "New BSS info entry: %pM\n", mgmt->bssid);
767 IWM_DBG_MLME(iwm, DBG, "\tType: 0x%x\n", le32_to_cpu(umac_bss->type));
768 IWM_DBG_MLME(iwm, DBG, "\tTimestamp: %d\n",
769 le32_to_cpu(umac_bss->timestamp));
770 IWM_DBG_MLME(iwm, DBG, "\tTable Index: %d\n",
771 le16_to_cpu(umac_bss->table_idx));
772 IWM_DBG_MLME(iwm, DBG, "\tBand: %d\n", umac_bss->band);
773 IWM_DBG_MLME(iwm, DBG, "\tChannel: %d\n", umac_bss->channel);
774 IWM_DBG_MLME(iwm, DBG, "\tRSSI: %d\n", umac_bss->rssi);
775 IWM_DBG_MLME(iwm, DBG, "\tFrame Length: %d\n", frame_len);
776
777 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
778 if (bss->bss->table_idx == umac_bss->table_idx)
779 break;
780
781 if (&bss->node != &iwm->bss_list) {
782 /* Remove the old BSS entry, we will add it back later. */
783 list_del(&bss->node);
784 kfree(bss->bss);
785 } else {
786 /* New BSS entry */
787
788 bss = kzalloc(sizeof(struct iwm_bss_info), GFP_KERNEL);
789 if (!bss) {
790 IWM_ERR(iwm, "Couldn't allocate bss_info\n");
791 return -ENOMEM;
792 }
793 }
794
795 bss->bss = kzalloc(bss_len, GFP_KERNEL);
796 if (!bss) {
797 kfree(bss);
798 IWM_ERR(iwm, "Couldn't allocate bss\n");
799 return -ENOMEM;
800 }
801
802 INIT_LIST_HEAD(&bss->node);
803 memcpy(bss->bss, umac_bss, bss_len);
804
805 if (umac_bss->band == UMAC_BAND_2GHZ)
806 band = wiphy->bands[IEEE80211_BAND_2GHZ];
807 else if (umac_bss->band == UMAC_BAND_5GHZ)
808 band = wiphy->bands[IEEE80211_BAND_5GHZ];
809 else {
810 IWM_ERR(iwm, "Invalid band: %d\n", umac_bss->band);
811 goto err;
812 }
813
814 freq = ieee80211_channel_to_frequency(umac_bss->channel);
815 channel = ieee80211_get_channel(wiphy, freq);
816 signal = umac_bss->rssi * 100;
817
818 bss->cfg_bss = cfg80211_inform_bss_frame(wiphy, channel,
819 mgmt, frame_len,
820 signal, GFP_KERNEL);
821 if (!bss->cfg_bss)
822 goto err;
823
824 list_add_tail(&bss->node, &iwm->bss_list);
825
826 return 0;
827 err:
828 kfree(bss->bss);
829 kfree(bss);
830
831 return -EINVAL;
832 }
833
834 static int iwm_mlme_remove_bss(struct iwm_priv *iwm, u8 *buf,
835 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
836 {
837 struct iwm_umac_notif_bss_removed *bss_rm =
838 (struct iwm_umac_notif_bss_removed *)buf;
839 struct iwm_bss_info *bss, *next;
840 u16 table_idx;
841 int i;
842
843 for (i = 0; i < le32_to_cpu(bss_rm->count); i++) {
844 table_idx = (le16_to_cpu(bss_rm->entries[i])
845 & IWM_BSS_REMOVE_INDEX_MSK);
846 list_for_each_entry_safe(bss, next, &iwm->bss_list, node)
847 if (bss->bss->table_idx == cpu_to_le16(table_idx)) {
848 struct ieee80211_mgmt *mgmt;
849
850 mgmt = (struct ieee80211_mgmt *)
851 (bss->bss->frame_buf);
852 IWM_DBG_MLME(iwm, ERR,
853 "BSS removed: %pM\n",
854 mgmt->bssid);
855 list_del(&bss->node);
856 kfree(bss->bss);
857 kfree(bss);
858 }
859 }
860
861 return 0;
862 }
863
864 static int iwm_mlme_mgt_frame(struct iwm_priv *iwm, u8 *buf,
865 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
866 {
867 struct iwm_umac_notif_mgt_frame *mgt_frame =
868 (struct iwm_umac_notif_mgt_frame *)buf;
869 struct ieee80211_mgmt *mgt = (struct ieee80211_mgmt *)mgt_frame->frame;
870 u8 *ie;
871
872 IWM_HEXDUMP(iwm, DBG, MLME, "MGT: ", mgt_frame->frame,
873 le16_to_cpu(mgt_frame->len));
874
875 if (ieee80211_is_assoc_req(mgt->frame_control)) {
876 ie = mgt->u.assoc_req.variable;;
877 iwm->req_ie_len =
878 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
879 kfree(iwm->req_ie);
880 iwm->req_ie = kmemdup(mgt->u.assoc_req.variable,
881 iwm->req_ie_len, GFP_KERNEL);
882 } else if (ieee80211_is_reassoc_req(mgt->frame_control)) {
883 ie = mgt->u.reassoc_req.variable;;
884 iwm->req_ie_len =
885 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
886 kfree(iwm->req_ie);
887 iwm->req_ie = kmemdup(mgt->u.reassoc_req.variable,
888 iwm->req_ie_len, GFP_KERNEL);
889 } else if (ieee80211_is_assoc_resp(mgt->frame_control)) {
890 ie = mgt->u.assoc_resp.variable;;
891 iwm->resp_ie_len =
892 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
893 kfree(iwm->resp_ie);
894 iwm->resp_ie = kmemdup(mgt->u.assoc_resp.variable,
895 iwm->resp_ie_len, GFP_KERNEL);
896 } else if (ieee80211_is_reassoc_resp(mgt->frame_control)) {
897 ie = mgt->u.reassoc_resp.variable;;
898 iwm->resp_ie_len =
899 le16_to_cpu(mgt_frame->len) - (ie - (u8 *)mgt);
900 kfree(iwm->resp_ie);
901 iwm->resp_ie = kmemdup(mgt->u.reassoc_resp.variable,
902 iwm->resp_ie_len, GFP_KERNEL);
903 } else {
904 IWM_ERR(iwm, "Unsupported management frame: 0x%x",
905 le16_to_cpu(mgt->frame_control));
906 return 0;
907 }
908
909 return 0;
910 }
911
912 static int iwm_ntf_mlme(struct iwm_priv *iwm, u8 *buf,
913 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
914 {
915 struct iwm_umac_notif_wifi_if *notif =
916 (struct iwm_umac_notif_wifi_if *)buf;
917
918 switch (notif->status) {
919 case WIFI_IF_NTFY_ASSOC_START:
920 return iwm_mlme_assoc_start(iwm, buf, buf_size, cmd);
921 case WIFI_IF_NTFY_ASSOC_COMPLETE:
922 return iwm_mlme_assoc_complete(iwm, buf, buf_size, cmd);
923 case WIFI_IF_NTFY_PROFILE_INVALIDATE_COMPLETE:
924 return iwm_mlme_profile_invalidate(iwm, buf, buf_size, cmd);
925 case WIFI_IF_NTFY_CONNECTION_TERMINATED:
926 return iwm_mlme_connection_terminated(iwm, buf, buf_size, cmd);
927 case WIFI_IF_NTFY_SCAN_COMPLETE:
928 return iwm_mlme_scan_complete(iwm, buf, buf_size, cmd);
929 case WIFI_IF_NTFY_STA_TABLE_CHANGE:
930 return iwm_mlme_update_sta_table(iwm, buf, buf_size, cmd);
931 case WIFI_IF_NTFY_EXTENDED_IE_REQUIRED:
932 IWM_DBG_MLME(iwm, DBG, "Extended IE required\n");
933 break;
934 case WIFI_IF_NTFY_RADIO_PREEMPTION:
935 return iwm_mlme_medium_lost(iwm, buf, buf_size, cmd);
936 case WIFI_IF_NTFY_BSS_TRK_TABLE_CHANGED:
937 return iwm_mlme_update_bss_table(iwm, buf, buf_size, cmd);
938 case WIFI_IF_NTFY_BSS_TRK_ENTRIES_REMOVED:
939 return iwm_mlme_remove_bss(iwm, buf, buf_size, cmd);
940 break;
941 case WIFI_IF_NTFY_MGMT_FRAME:
942 return iwm_mlme_mgt_frame(iwm, buf, buf_size, cmd);
943 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_START:
944 case WIFI_DBG_IF_NTFY_SCAN_SUPER_JOB_COMPLETE:
945 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_START:
946 case WIFI_DBG_IF_NTFY_SCAN_CHANNEL_RESULT:
947 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_START:
948 case WIFI_DBG_IF_NTFY_SCAN_MINI_JOB_COMPLETE:
949 case WIFI_DBG_IF_NTFY_CNCT_ATC_START:
950 case WIFI_DBG_IF_NTFY_COEX_NOTIFICATION:
951 case WIFI_DBG_IF_NTFY_COEX_HANDLE_ENVELOP:
952 case WIFI_DBG_IF_NTFY_COEX_HANDLE_RELEASE_ENVELOP:
953 IWM_DBG_MLME(iwm, DBG, "MLME debug notification: 0x%x\n",
954 notif->status);
955 break;
956 default:
957 IWM_ERR(iwm, "Unhandled notification: 0x%x\n", notif->status);
958 break;
959 }
960
961 return 0;
962 }
963
964 #define IWM_STATS_UPDATE_INTERVAL (2 * HZ)
965
966 static int iwm_ntf_statistics(struct iwm_priv *iwm, u8 *buf,
967 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
968 {
969 struct iwm_umac_notif_stats *stats = (struct iwm_umac_notif_stats *)buf;
970 struct iw_statistics *wstats = &iwm->wstats;
971 u16 max_rate = 0;
972 int i;
973
974 IWM_DBG_MLME(iwm, DBG, "Statistics notification received\n");
975
976 if (test_bit(IWM_STATUS_ASSOCIATED, &iwm->status)) {
977 for (i = 0; i < UMAC_NTF_RATE_SAMPLE_NR; i++) {
978 max_rate = max_t(u16, max_rate,
979 max(le16_to_cpu(stats->tx_rate[i]),
980 le16_to_cpu(stats->rx_rate[i])));
981 }
982 /* UMAC passes rate info multiplies by 2 */
983 iwm->rate = max_rate >> 1;
984 }
985 iwm->txpower = le32_to_cpu(stats->tx_power);
986
987 wstats->status = 0;
988
989 wstats->discard.nwid = le32_to_cpu(stats->rx_drop_other_bssid);
990 wstats->discard.code = le32_to_cpu(stats->rx_drop_decode);
991 wstats->discard.fragment = le32_to_cpu(stats->rx_drop_reassembly);
992 wstats->discard.retries = le32_to_cpu(stats->tx_drop_max_retry);
993
994 wstats->miss.beacon = le32_to_cpu(stats->missed_beacons);
995
996 /* according to cfg80211 */
997 if (stats->rssi_dbm < -110)
998 wstats->qual.qual = 0;
999 else if (stats->rssi_dbm > -40)
1000 wstats->qual.qual = 70;
1001 else
1002 wstats->qual.qual = stats->rssi_dbm + 110;
1003
1004 wstats->qual.level = stats->rssi_dbm;
1005 wstats->qual.noise = stats->noise_dbm;
1006 wstats->qual.updated = IW_QUAL_ALL_UPDATED | IW_QUAL_DBM;
1007
1008 schedule_delayed_work(&iwm->stats_request, IWM_STATS_UPDATE_INTERVAL);
1009
1010 mod_timer(&iwm->watchdog, round_jiffies(jiffies + IWM_WATCHDOG_PERIOD));
1011
1012 return 0;
1013 }
1014
1015 static int iwm_ntf_eeprom_proxy(struct iwm_priv *iwm, u8 *buf,
1016 unsigned long buf_size,
1017 struct iwm_wifi_cmd *cmd)
1018 {
1019 struct iwm_umac_cmd_eeprom_proxy *eeprom_proxy =
1020 (struct iwm_umac_cmd_eeprom_proxy *)
1021 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1022 struct iwm_umac_cmd_eeprom_proxy_hdr *hdr = &eeprom_proxy->hdr;
1023 u32 hdr_offset = le32_to_cpu(hdr->offset);
1024 u32 hdr_len = le32_to_cpu(hdr->len);
1025 u32 hdr_type = le32_to_cpu(hdr->type);
1026
1027 IWM_DBG_NTF(iwm, DBG, "type: 0x%x, len: %d, offset: 0x%x\n",
1028 hdr_type, hdr_len, hdr_offset);
1029
1030 if ((hdr_offset + hdr_len) > IWM_EEPROM_LEN)
1031 return -EINVAL;
1032
1033 switch (hdr_type) {
1034 case IWM_UMAC_CMD_EEPROM_TYPE_READ:
1035 memcpy(iwm->eeprom + hdr_offset, eeprom_proxy->buf, hdr_len);
1036 break;
1037 case IWM_UMAC_CMD_EEPROM_TYPE_WRITE:
1038 default:
1039 return -ENOTSUPP;
1040 }
1041
1042 return 0;
1043 }
1044
1045 static int iwm_ntf_channel_info_list(struct iwm_priv *iwm, u8 *buf,
1046 unsigned long buf_size,
1047 struct iwm_wifi_cmd *cmd)
1048 {
1049 struct iwm_umac_cmd_get_channel_list *ch_list =
1050 (struct iwm_umac_cmd_get_channel_list *)
1051 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1052 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1053 struct ieee80211_supported_band *band;
1054 int i;
1055
1056 band = wiphy->bands[IEEE80211_BAND_2GHZ];
1057
1058 for (i = 0; i < band->n_channels; i++) {
1059 unsigned long ch_mask_0 =
1060 le32_to_cpu(ch_list->ch[0].channels_mask);
1061 unsigned long ch_mask_2 =
1062 le32_to_cpu(ch_list->ch[2].channels_mask);
1063
1064 if (!test_bit(i, &ch_mask_0))
1065 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1066
1067 if (!test_bit(i, &ch_mask_2))
1068 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1069 }
1070
1071 band = wiphy->bands[IEEE80211_BAND_5GHZ];
1072
1073 for (i = 0; i < min(band->n_channels, 32); i++) {
1074 unsigned long ch_mask_1 =
1075 le32_to_cpu(ch_list->ch[1].channels_mask);
1076 unsigned long ch_mask_3 =
1077 le32_to_cpu(ch_list->ch[3].channels_mask);
1078
1079 if (!test_bit(i, &ch_mask_1))
1080 band->channels[i].flags |= IEEE80211_CHAN_DISABLED;
1081
1082 if (!test_bit(i, &ch_mask_3))
1083 band->channels[i].flags |= IEEE80211_CHAN_NO_IBSS;
1084 }
1085
1086 return 0;
1087 }
1088
1089 static int iwm_ntf_wifi_if_wrapper(struct iwm_priv *iwm, u8 *buf,
1090 unsigned long buf_size,
1091 struct iwm_wifi_cmd *cmd)
1092 {
1093 struct iwm_umac_wifi_if *hdr;
1094
1095 if (cmd == NULL) {
1096 IWM_ERR(iwm, "Couldn't find expected wifi command\n");
1097 return -EINVAL;
1098 }
1099
1100 hdr = (struct iwm_umac_wifi_if *)cmd->buf.payload;
1101
1102 IWM_DBG_NTF(iwm, DBG, "WIFI_IF_WRAPPER cmd is delivered to UMAC: "
1103 "oid is 0x%x\n", hdr->oid);
1104
1105 if (hdr->oid <= WIFI_IF_NTFY_MAX) {
1106 set_bit(hdr->oid, &iwm->wifi_ntfy[0]);
1107 wake_up_interruptible(&iwm->wifi_ntfy_queue);
1108 } else
1109 return -EINVAL;
1110
1111 switch (hdr->oid) {
1112 case UMAC_WIFI_IF_CMD_SET_PROFILE:
1113 iwm->umac_profile_active = 1;
1114 break;
1115 default:
1116 break;
1117 }
1118
1119 return 0;
1120 }
1121
1122 #define CT_KILL_DELAY (30 * HZ)
1123 static int iwm_ntf_card_state(struct iwm_priv *iwm, u8 *buf,
1124 unsigned long buf_size, struct iwm_wifi_cmd *cmd)
1125 {
1126 struct wiphy *wiphy = iwm_to_wiphy(iwm);
1127 struct iwm_lmac_card_state *state = (struct iwm_lmac_card_state *)
1128 (buf + sizeof(struct iwm_umac_wifi_in_hdr));
1129 u32 flags = le32_to_cpu(state->flags);
1130
1131 IWM_INFO(iwm, "HW RF Kill %s, CT Kill %s\n",
1132 flags & IWM_CARD_STATE_HW_DISABLED ? "ON" : "OFF",
1133 flags & IWM_CARD_STATE_CTKILL_DISABLED ? "ON" : "OFF");
1134
1135 if (flags & IWM_CARD_STATE_CTKILL_DISABLED) {
1136 /*
1137 * We got a CTKILL event: We bring the interface down in
1138 * oder to cool the device down, and try to bring it up
1139 * 30 seconds later. If it's still too hot, we'll go through
1140 * this code path again.
1141 */
1142 cancel_delayed_work_sync(&iwm->ct_kill_delay);
1143 schedule_delayed_work(&iwm->ct_kill_delay, CT_KILL_DELAY);
1144 }
1145
1146 wiphy_rfkill_set_hw_state(wiphy, flags &
1147 (IWM_CARD_STATE_HW_DISABLED |
1148 IWM_CARD_STATE_CTKILL_DISABLED));
1149
1150 return 0;
1151 }
1152
1153 static int iwm_rx_handle_wifi(struct iwm_priv *iwm, u8 *buf,
1154 unsigned long buf_size)
1155 {
1156 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1157 struct iwm_wifi_cmd *cmd;
1158 u8 source, cmd_id;
1159 u16 seq_num;
1160 u32 count;
1161 u8 resp;
1162
1163 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1164 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1165
1166 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1167 if (source >= IWM_SRC_NUM) {
1168 IWM_CRIT(iwm, "invalid source %d\n", source);
1169 return -EINVAL;
1170 }
1171
1172 count = (GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_BYTE_COUNT));
1173 count += sizeof(struct iwm_umac_wifi_in_hdr) -
1174 sizeof(struct iwm_dev_cmd_hdr);
1175 if (count > buf_size) {
1176 IWM_CRIT(iwm, "count %d, buf size:%ld\n", count, buf_size);
1177 return -EINVAL;
1178 }
1179
1180 resp = GET_VAL32(wifi_hdr->sw_hdr.meta_data, UMAC_FW_CMD_STATUS);
1181
1182 seq_num = le16_to_cpu(wifi_hdr->sw_hdr.cmd.seq_num);
1183
1184 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x, seqnum: %d\n",
1185 cmd_id, source, seq_num);
1186
1187 /*
1188 * If this is a response to a previously sent command, there must
1189 * be a pending command for this sequence number.
1190 */
1191 cmd = iwm_get_pending_wifi_cmd(iwm, seq_num);
1192
1193 /* Notify the caller only for sync commands. */
1194 switch (source) {
1195 case UMAC_HDI_IN_SOURCE_FHRX:
1196 if (iwm->lmac_handlers[cmd_id] &&
1197 test_bit(cmd_id, &iwm->lmac_handler_map[0]))
1198 return iwm_notif_send(iwm, cmd, cmd_id, source,
1199 buf, count);
1200 break;
1201 case UMAC_HDI_IN_SOURCE_FW:
1202 if (iwm->umac_handlers[cmd_id] &&
1203 test_bit(cmd_id, &iwm->umac_handler_map[0]))
1204 return iwm_notif_send(iwm, cmd, cmd_id, source,
1205 buf, count);
1206 break;
1207 case UMAC_HDI_IN_SOURCE_UDMA:
1208 break;
1209 }
1210
1211 return iwm_rx_handle_resp(iwm, buf, count, cmd);
1212 }
1213
1214 int iwm_rx_handle_resp(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size,
1215 struct iwm_wifi_cmd *cmd)
1216 {
1217 u8 source, cmd_id;
1218 struct iwm_umac_wifi_in_hdr *wifi_hdr;
1219 int ret = 0;
1220
1221 wifi_hdr = (struct iwm_umac_wifi_in_hdr *)buf;
1222 cmd_id = wifi_hdr->sw_hdr.cmd.cmd;
1223
1224 source = GET_VAL32(wifi_hdr->hw_hdr.cmd, UMAC_HDI_IN_CMD_SOURCE);
1225
1226 IWM_DBG_RX(iwm, DBG, "CMD:0x%x, source: 0x%x\n", cmd_id, source);
1227
1228 switch (source) {
1229 case UMAC_HDI_IN_SOURCE_FHRX:
1230 if (iwm->lmac_handlers[cmd_id])
1231 ret = iwm->lmac_handlers[cmd_id]
1232 (iwm, buf, buf_size, cmd);
1233 break;
1234 case UMAC_HDI_IN_SOURCE_FW:
1235 if (iwm->umac_handlers[cmd_id])
1236 ret = iwm->umac_handlers[cmd_id]
1237 (iwm, buf, buf_size, cmd);
1238 break;
1239 case UMAC_HDI_IN_SOURCE_UDMA:
1240 ret = -EINVAL;
1241 break;
1242 }
1243
1244 kfree(cmd);
1245
1246 return ret;
1247 }
1248
1249 static int iwm_rx_handle_nonwifi(struct iwm_priv *iwm, u8 *buf,
1250 unsigned long buf_size)
1251 {
1252 u8 seq_num;
1253 struct iwm_udma_in_hdr *hdr = (struct iwm_udma_in_hdr *)buf;
1254 struct iwm_nonwifi_cmd *cmd, *next;
1255
1256 seq_num = GET_VAL32(hdr->cmd, UDMA_HDI_IN_CMD_NON_WIFI_HW_SEQ_NUM);
1257
1258 /*
1259 * We received a non wifi answer.
1260 * Let's check if there's a pending command for it, and if so
1261 * replace the command payload with the buffer, and then wake the
1262 * callers up.
1263 * That means we only support synchronised non wifi command response
1264 * schemes.
1265 */
1266 list_for_each_entry_safe(cmd, next, &iwm->nonwifi_pending_cmd, pending)
1267 if (cmd->seq_num == seq_num) {
1268 cmd->resp_received = 1;
1269 cmd->buf.len = buf_size;
1270 memcpy(cmd->buf.hdr, buf, buf_size);
1271 wake_up_interruptible(&iwm->nonwifi_queue);
1272 }
1273
1274 return 0;
1275 }
1276
1277 static int iwm_rx_handle_umac(struct iwm_priv *iwm, u8 *buf,
1278 unsigned long buf_size)
1279 {
1280 int ret = 0;
1281 u8 op_code;
1282 unsigned long buf_offset = 0;
1283 struct iwm_udma_in_hdr *hdr;
1284
1285 /*
1286 * To allow for a more efficient bus usage, UMAC
1287 * messages are encapsulated into UDMA ones. This
1288 * way we can have several UMAC messages in one bus
1289 * transfer.
1290 * A UDMA frame size is always aligned on 16 bytes,
1291 * and a UDMA frame must not start with a UMAC_PAD_TERMINAL
1292 * word. This is how we parse a bus frame into several
1293 * UDMA ones.
1294 */
1295 while (buf_offset < buf_size) {
1296
1297 hdr = (struct iwm_udma_in_hdr *)(buf + buf_offset);
1298
1299 if (iwm_rx_check_udma_hdr(hdr) < 0) {
1300 IWM_DBG_RX(iwm, DBG, "End of frame\n");
1301 break;
1302 }
1303
1304 op_code = GET_VAL32(hdr->cmd, UMAC_HDI_IN_CMD_OPCODE);
1305
1306 IWM_DBG_RX(iwm, DBG, "Op code: 0x%x\n", op_code);
1307
1308 if (op_code == UMAC_HDI_IN_OPCODE_WIFI) {
1309 ret |= iwm_rx_handle_wifi(iwm, buf + buf_offset,
1310 buf_size - buf_offset);
1311 } else if (op_code < UMAC_HDI_IN_OPCODE_NONWIFI_MAX) {
1312 if (GET_VAL32(hdr->cmd,
1313 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) !=
1314 UDMA_HDI_IN_CMD_NON_WIFI_HW_SIG) {
1315 IWM_ERR(iwm, "Incorrect hw signature\n");
1316 return -EINVAL;
1317 }
1318 ret |= iwm_rx_handle_nonwifi(iwm, buf + buf_offset,
1319 buf_size - buf_offset);
1320 } else {
1321 IWM_ERR(iwm, "Invalid RX opcode: 0x%x\n", op_code);
1322 ret |= -EINVAL;
1323 }
1324
1325 buf_offset += iwm_rx_resp_size(hdr);
1326 }
1327
1328 return ret;
1329 }
1330
1331 int iwm_rx_handle(struct iwm_priv *iwm, u8 *buf, unsigned long buf_size)
1332 {
1333 struct iwm_udma_in_hdr *hdr;
1334
1335 hdr = (struct iwm_udma_in_hdr *)buf;
1336
1337 switch (le32_to_cpu(hdr->cmd)) {
1338 case UMAC_REBOOT_BARKER:
1339 if (test_bit(IWM_STATUS_READY, &iwm->status)) {
1340 IWM_ERR(iwm, "Unexpected BARKER\n");
1341
1342 schedule_work(&iwm->reset_worker);
1343
1344 return 0;
1345 }
1346
1347 return iwm_notif_send(iwm, NULL, IWM_BARKER_REBOOT_NOTIFICATION,
1348 IWM_SRC_UDMA, buf, buf_size);
1349 case UMAC_ACK_BARKER:
1350 return iwm_notif_send(iwm, NULL, IWM_ACK_BARKER_NOTIFICATION,
1351 IWM_SRC_UDMA, NULL, 0);
1352 default:
1353 IWM_DBG_RX(iwm, DBG, "Received cmd: 0x%x\n", hdr->cmd);
1354 return iwm_rx_handle_umac(iwm, buf, buf_size);
1355 }
1356
1357 return 0;
1358 }
1359
1360 static const iwm_handler iwm_umac_handlers[] =
1361 {
1362 [UMAC_NOTIFY_OPCODE_ERROR] = iwm_ntf_error,
1363 [UMAC_NOTIFY_OPCODE_ALIVE] = iwm_ntf_umac_alive,
1364 [UMAC_NOTIFY_OPCODE_INIT_COMPLETE] = iwm_ntf_init_complete,
1365 [UMAC_NOTIFY_OPCODE_WIFI_CORE_STATUS] = iwm_ntf_wifi_status,
1366 [UMAC_NOTIFY_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_mlme,
1367 [UMAC_NOTIFY_OPCODE_PAGE_DEALLOC] = iwm_ntf_tx_credit_update,
1368 [UMAC_NOTIFY_OPCODE_RX_TICKET] = iwm_ntf_rx_ticket,
1369 [UMAC_CMD_OPCODE_RESET] = iwm_ntf_umac_reset,
1370 [UMAC_NOTIFY_OPCODE_STATS] = iwm_ntf_statistics,
1371 [UMAC_CMD_OPCODE_EEPROM_PROXY] = iwm_ntf_eeprom_proxy,
1372 [UMAC_CMD_OPCODE_GET_CHAN_INFO_LIST] = iwm_ntf_channel_info_list,
1373 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1374 [UMAC_CMD_OPCODE_WIFI_IF_WRAPPER] = iwm_ntf_wifi_if_wrapper,
1375 };
1376
1377 static const iwm_handler iwm_lmac_handlers[] =
1378 {
1379 [REPLY_TX] = iwm_ntf_tx,
1380 [REPLY_ALIVE] = iwm_ntf_lmac_version,
1381 [CALIBRATION_RES_NOTIFICATION] = iwm_ntf_calib_res,
1382 [CALIBRATION_COMPLETE_NOTIFICATION] = iwm_ntf_calib_complete,
1383 [CALIBRATION_CFG_CMD] = iwm_ntf_calib_cfg,
1384 [REPLY_RX_MPDU_CMD] = iwm_ntf_rx_packet,
1385 [CARD_STATE_NOTIFICATION] = iwm_ntf_card_state,
1386 };
1387
1388 void iwm_rx_setup_handlers(struct iwm_priv *iwm)
1389 {
1390 iwm->umac_handlers = (iwm_handler *) iwm_umac_handlers;
1391 iwm->lmac_handlers = (iwm_handler *) iwm_lmac_handlers;
1392 }
1393
1394 static void iwm_remove_iv(struct sk_buff *skb, u32 hdr_total_len)
1395 {
1396 struct ieee80211_hdr *hdr;
1397 unsigned int hdr_len;
1398
1399 hdr = (struct ieee80211_hdr *)skb->data;
1400
1401 if (!ieee80211_has_protected(hdr->frame_control))
1402 return;
1403
1404 hdr_len = ieee80211_hdrlen(hdr->frame_control);
1405 if (hdr_total_len <= hdr_len)
1406 return;
1407
1408 memmove(skb->data + (hdr_total_len - hdr_len), skb->data, hdr_len);
1409 skb_pull(skb, (hdr_total_len - hdr_len));
1410 }
1411
1412 static void iwm_rx_adjust_packet(struct iwm_priv *iwm,
1413 struct iwm_rx_packet *packet,
1414 struct iwm_rx_ticket_node *ticket_node)
1415 {
1416 u32 payload_offset = 0, payload_len;
1417 struct iwm_rx_ticket *ticket = ticket_node->ticket;
1418 struct iwm_rx_mpdu_hdr *mpdu_hdr;
1419 struct ieee80211_hdr *hdr;
1420
1421 mpdu_hdr = (struct iwm_rx_mpdu_hdr *)packet->skb->data;
1422 payload_offset += sizeof(struct iwm_rx_mpdu_hdr);
1423 /* Padding is 0 or 2 bytes */
1424 payload_len = le16_to_cpu(mpdu_hdr->len) +
1425 (le16_to_cpu(ticket->flags) & IWM_RX_TICKET_PAD_SIZE_MSK);
1426 payload_len -= ticket->tail_len;
1427
1428 IWM_DBG_RX(iwm, DBG, "Packet adjusted, len:%d, offset:%d, "
1429 "ticket offset:%d ticket tail len:%d\n",
1430 payload_len, payload_offset, ticket->payload_offset,
1431 ticket->tail_len);
1432
1433 IWM_HEXDUMP(iwm, DBG, RX, "RAW: ", packet->skb->data, packet->skb->len);
1434
1435 skb_pull(packet->skb, payload_offset);
1436 skb_trim(packet->skb, payload_len);
1437
1438 iwm_remove_iv(packet->skb, ticket->payload_offset);
1439
1440 hdr = (struct ieee80211_hdr *) packet->skb->data;
1441 if (ieee80211_is_data_qos(hdr->frame_control)) {
1442 /* UMAC handed QOS_DATA frame with 2 padding bytes appended
1443 * to the qos_ctl field in IEEE 802.11 headers. */
1444 memmove(packet->skb->data + IEEE80211_QOS_CTL_LEN + 2,
1445 packet->skb->data,
1446 ieee80211_hdrlen(hdr->frame_control) -
1447 IEEE80211_QOS_CTL_LEN);
1448 hdr = (struct ieee80211_hdr *) skb_pull(packet->skb,
1449 IEEE80211_QOS_CTL_LEN + 2);
1450 hdr->frame_control &= ~cpu_to_le16(IEEE80211_STYPE_QOS_DATA);
1451 }
1452
1453 IWM_HEXDUMP(iwm, DBG, RX, "ADJUSTED: ",
1454 packet->skb->data, packet->skb->len);
1455 }
1456
1457 static void classify8023(struct sk_buff *skb)
1458 {
1459 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
1460
1461 if (ieee80211_is_data_qos(hdr->frame_control)) {
1462 u8 *qc = ieee80211_get_qos_ctl(hdr);
1463 /* frame has qos control */
1464 skb->priority = *qc & IEEE80211_QOS_CTL_TID_MASK;
1465 } else {
1466 skb->priority = 0;
1467 }
1468 }
1469
1470 static void iwm_rx_process_packet(struct iwm_priv *iwm,
1471 struct iwm_rx_packet *packet,
1472 struct iwm_rx_ticket_node *ticket_node)
1473 {
1474 int ret;
1475 struct sk_buff *skb = packet->skb;
1476 struct wireless_dev *wdev = iwm_to_wdev(iwm);
1477 struct net_device *ndev = iwm_to_ndev(iwm);
1478
1479 IWM_DBG_RX(iwm, DBG, "Processing packet ID %d\n", packet->id);
1480
1481 switch (le16_to_cpu(ticket_node->ticket->action)) {
1482 case IWM_RX_TICKET_RELEASE:
1483 IWM_DBG_RX(iwm, DBG, "RELEASE packet\n");
1484 classify8023(skb);
1485 iwm_rx_adjust_packet(iwm, packet, ticket_node);
1486 ret = ieee80211_data_to_8023(skb, ndev->dev_addr, wdev->iftype);
1487 if (ret < 0) {
1488 IWM_DBG_RX(iwm, DBG, "Couldn't convert 802.11 header - "
1489 "%d\n", ret);
1490 break;
1491 }
1492
1493 IWM_HEXDUMP(iwm, DBG, RX, "802.3: ", skb->data, skb->len);
1494
1495 skb->dev = iwm_to_ndev(iwm);
1496 skb->protocol = eth_type_trans(skb, ndev);
1497 skb->ip_summed = CHECKSUM_NONE;
1498 memset(skb->cb, 0, sizeof(skb->cb));
1499
1500 ndev->stats.rx_packets++;
1501 ndev->stats.rx_bytes += skb->len;
1502
1503 if (netif_rx_ni(skb) == NET_RX_DROP) {
1504 IWM_ERR(iwm, "Packet dropped\n");
1505 ndev->stats.rx_dropped++;
1506 }
1507 break;
1508 case IWM_RX_TICKET_DROP:
1509 IWM_DBG_RX(iwm, DBG, "DROP packet: 0x%x\n",
1510 le16_to_cpu(ticket_node->ticket->flags));
1511 kfree_skb(packet->skb);
1512 break;
1513 default:
1514 IWM_ERR(iwm, "Unknow ticket action: %d\n",
1515 le16_to_cpu(ticket_node->ticket->action));
1516 kfree_skb(packet->skb);
1517 }
1518
1519 kfree(packet);
1520 iwm_rx_ticket_node_free(ticket_node);
1521 }
1522
1523 /*
1524 * Rx data processing:
1525 *
1526 * We're receiving Rx packet from the LMAC, and Rx ticket from
1527 * the UMAC.
1528 * To forward a target data packet upstream (i.e. to the
1529 * kernel network stack), we must have received an Rx ticket
1530 * that tells us we're allowed to release this packet (ticket
1531 * action is IWM_RX_TICKET_RELEASE). The Rx ticket also indicates,
1532 * among other things, where valid data actually starts in the Rx
1533 * packet.
1534 */
1535 void iwm_rx_worker(struct work_struct *work)
1536 {
1537 struct iwm_priv *iwm;
1538 struct iwm_rx_ticket_node *ticket, *next;
1539
1540 iwm = container_of(work, struct iwm_priv, rx_worker);
1541
1542 /*
1543 * We go through the tickets list and if there is a pending
1544 * packet for it, we push it upstream.
1545 * We stop whenever a ticket is missing its packet, as we're
1546 * supposed to send the packets in order.
1547 */
1548 list_for_each_entry_safe(ticket, next, &iwm->rx_tickets, node) {
1549 struct iwm_rx_packet *packet =
1550 iwm_rx_packet_get(iwm, le16_to_cpu(ticket->ticket->id));
1551
1552 if (!packet) {
1553 IWM_DBG_RX(iwm, DBG, "Skip rx_work: Wait for ticket %d "
1554 "to be handled first\n",
1555 le16_to_cpu(ticket->ticket->id));
1556 return;
1557 }
1558
1559 list_del(&ticket->node);
1560 list_del(&packet->node);
1561 iwm_rx_process_packet(iwm, packet, ticket);
1562 }
1563 }
1564
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree