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iwlagn: remove indirection for iwlagn_hw_valid_rtc_data_addr
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blobc2a124131ef9cd6b8514a0a4c745d5b31366b4dc
1 /******************************************************************************
2 *
3 * Copyright(c) 2003 - 2011 Intel Corporation. All rights reserved.
4 *
5 * Portions of this file are derived from the ipw3945 project, as well
6 * as portions of the ieee80211 subsystem header files.
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of version 2 of the GNU General Public License as
10 * published by the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc.,
19 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
20 *
21 * The full GNU General Public License is included in this distribution in the
22 * file called LICENSE.
23 *
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *
28 *****************************************************************************/
29
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
32 #include <linux/kernel.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/slab.h>
36 #include <linux/dma-mapping.h>
37 #include <linux/delay.h>
38 #include <linux/sched.h>
39 #include <linux/skbuff.h>
40 #include <linux/netdevice.h>
41 #include <linux/wireless.h>
42 #include <linux/firmware.h>
43 #include <linux/etherdevice.h>
44 #include <linux/if_arp.h>
45
46 #include <net/mac80211.h>
47
48 #include <asm/div64.h>
49
50 #include "iwl-eeprom.h"
51 #include "iwl-dev.h"
52 #include "iwl-core.h"
53 #include "iwl-io.h"
54 #include "iwl-helpers.h"
55 #include "iwl-sta.h"
56 #include "iwl-agn-calib.h"
57 #include "iwl-agn.h"
58 #include "iwl-pci.h"
59 #include "iwl-trans.h"
60
61 /******************************************************************************
62 *
63 * module boiler plate
64 *
65 ******************************************************************************/
66
67 /*
68 * module name, copyright, version, etc.
69 */
70 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
71
72 #ifdef CONFIG_IWLWIFI_DEBUG
73 #define VD "d"
74 #else
75 #define VD
76 #endif
77
78 #define DRV_VERSION IWLWIFI_VERSION VD
79
80
81 MODULE_DESCRIPTION(DRV_DESCRIPTION);
82 MODULE_VERSION(DRV_VERSION);
83 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
84 MODULE_LICENSE("GPL");
85
86 static int iwlagn_ant_coupling;
87 static bool iwlagn_bt_ch_announce = 1;
88
89 void iwl_update_chain_flags(struct iwl_priv *priv)
90 {
91 struct iwl_rxon_context *ctx;
92
93 for_each_context(priv, ctx) {
94 iwlagn_set_rxon_chain(priv, ctx);
95 if (ctx->active.rx_chain != ctx->staging.rx_chain)
96 iwlagn_commit_rxon(priv, ctx);
97 }
98 }
99
100 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
101 static void iwl_set_beacon_tim(struct iwl_priv *priv,
102 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
103 u8 *beacon, u32 frame_size)
104 {
105 u16 tim_idx;
106 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
107
108 /*
109 * The index is relative to frame start but we start looking at the
110 * variable-length part of the beacon.
111 */
112 tim_idx = mgmt->u.beacon.variable - beacon;
113
114 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
115 while ((tim_idx < (frame_size - 2)) &&
116 (beacon[tim_idx] != WLAN_EID_TIM))
117 tim_idx += beacon[tim_idx+1] + 2;
118
119 /* If TIM field was found, set variables */
120 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
121 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
122 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
123 } else
124 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
125 }
126
127 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
128 {
129 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
130 struct iwl_host_cmd cmd = {
131 .id = REPLY_TX_BEACON,
132 .flags = CMD_SYNC,
133 };
134 struct ieee80211_tx_info *info;
135 u32 frame_size;
136 u32 rate_flags;
137 u32 rate;
138
139 /*
140 * We have to set up the TX command, the TX Beacon command, and the
141 * beacon contents.
142 */
143
144 lockdep_assert_held(&priv->mutex);
145
146 if (!priv->beacon_ctx) {
147 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
148 return 0;
149 }
150
151 if (WARN_ON(!priv->beacon_skb))
152 return -EINVAL;
153
154 /* Allocate beacon command */
155 if (!priv->beacon_cmd)
156 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
157 tx_beacon_cmd = priv->beacon_cmd;
158 if (!tx_beacon_cmd)
159 return -ENOMEM;
160
161 frame_size = priv->beacon_skb->len;
162
163 /* Set up TX command fields */
164 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
165 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
166 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
167 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
168 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
169
170 /* Set up TX beacon command fields */
171 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
172 frame_size);
173
174 /* Set up packet rate and flags */
175 info = IEEE80211_SKB_CB(priv->beacon_skb);
176
177 /*
178 * Let's set up the rate at least somewhat correctly;
179 * it will currently not actually be used by the uCode,
180 * it uses the broadcast station's rate instead.
181 */
182 if (info->control.rates[0].idx < 0 ||
183 info->control.rates[0].flags & IEEE80211_TX_RC_MCS)
184 rate = 0;
185 else
186 rate = info->control.rates[0].idx;
187
188 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
189 priv->hw_params.valid_tx_ant);
190 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
191
192 /* In mac80211, rates for 5 GHz start at 0 */
193 if (info->band == IEEE80211_BAND_5GHZ)
194 rate += IWL_FIRST_OFDM_RATE;
195 else if (rate >= IWL_FIRST_CCK_RATE && rate <= IWL_LAST_CCK_RATE)
196 rate_flags |= RATE_MCS_CCK_MSK;
197
198 tx_beacon_cmd->tx.rate_n_flags =
199 iwl_hw_set_rate_n_flags(rate, rate_flags);
200
201 /* Submit command */
202 cmd.len[0] = sizeof(*tx_beacon_cmd);
203 cmd.data[0] = tx_beacon_cmd;
204 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
205 cmd.len[1] = frame_size;
206 cmd.data[1] = priv->beacon_skb->data;
207 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
208
209 return trans_send_cmd(priv, &cmd);
210 }
211
212 static void iwl_bg_beacon_update(struct work_struct *work)
213 {
214 struct iwl_priv *priv =
215 container_of(work, struct iwl_priv, beacon_update);
216 struct sk_buff *beacon;
217
218 mutex_lock(&priv->mutex);
219 if (!priv->beacon_ctx) {
220 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
221 goto out;
222 }
223
224 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
225 /*
226 * The ucode will send beacon notifications even in
227 * IBSS mode, but we don't want to process them. But
228 * we need to defer the type check to here due to
229 * requiring locking around the beacon_ctx access.
230 */
231 goto out;
232 }
233
234 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
235 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
236 if (!beacon) {
237 IWL_ERR(priv, "update beacon failed -- keeping old\n");
238 goto out;
239 }
240
241 /* new beacon skb is allocated every time; dispose previous.*/
242 dev_kfree_skb(priv->beacon_skb);
243
244 priv->beacon_skb = beacon;
245
246 iwlagn_send_beacon_cmd(priv);
247 out:
248 mutex_unlock(&priv->mutex);
249 }
250
251 static void iwl_bg_bt_runtime_config(struct work_struct *work)
252 {
253 struct iwl_priv *priv =
254 container_of(work, struct iwl_priv, bt_runtime_config);
255
256 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
257 return;
258
259 /* dont send host command if rf-kill is on */
260 if (!iwl_is_ready_rf(priv))
261 return;
262 iwlagn_send_advance_bt_config(priv);
263 }
264
265 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
266 {
267 struct iwl_priv *priv =
268 container_of(work, struct iwl_priv, bt_full_concurrency);
269 struct iwl_rxon_context *ctx;
270
271 mutex_lock(&priv->mutex);
272
273 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
274 goto out;
275
276 /* dont send host command if rf-kill is on */
277 if (!iwl_is_ready_rf(priv))
278 goto out;
279
280 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
281 priv->bt_full_concurrent ?
282 "full concurrency" : "3-wire");
283
284 /*
285 * LQ & RXON updated cmds must be sent before BT Config cmd
286 * to avoid 3-wire collisions
287 */
288 for_each_context(priv, ctx) {
289 iwlagn_set_rxon_chain(priv, ctx);
290 iwlagn_commit_rxon(priv, ctx);
291 }
292
293 iwlagn_send_advance_bt_config(priv);
294 out:
295 mutex_unlock(&priv->mutex);
296 }
297
298 /**
299 * iwl_bg_statistics_periodic - Timer callback to queue statistics
300 *
301 * This callback is provided in order to send a statistics request.
302 *
303 * This timer function is continually reset to execute within
304 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
305 * was received. We need to ensure we receive the statistics in order
306 * to update the temperature used for calibrating the TXPOWER.
307 */
308 static void iwl_bg_statistics_periodic(unsigned long data)
309 {
310 struct iwl_priv *priv = (struct iwl_priv *)data;
311
312 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
313 return;
314
315 /* dont send host command if rf-kill is on */
316 if (!iwl_is_ready_rf(priv))
317 return;
318
319 iwl_send_statistics_request(priv, CMD_ASYNC, false);
320 }
321
322
323 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
324 u32 start_idx, u32 num_events,
325 u32 mode)
326 {
327 u32 i;
328 u32 ptr; /* SRAM byte address of log data */
329 u32 ev, time, data; /* event log data */
330 unsigned long reg_flags;
331
332 if (mode == 0)
333 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
334 else
335 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
336
337 /* Make sure device is powered up for SRAM reads */
338 spin_lock_irqsave(&priv->reg_lock, reg_flags);
339 if (iwl_grab_nic_access(priv)) {
340 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
341 return;
342 }
343
344 /* Set starting address; reads will auto-increment */
345 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
346 rmb();
347
348 /*
349 * "time" is actually "data" for mode 0 (no timestamp).
350 * place event id # at far right for easier visual parsing.
351 */
352 for (i = 0; i < num_events; i++) {
353 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
354 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
355 if (mode == 0) {
356 trace_iwlwifi_dev_ucode_cont_event(priv,
357 0, time, ev);
358 } else {
359 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
360 trace_iwlwifi_dev_ucode_cont_event(priv,
361 time, data, ev);
362 }
363 }
364 /* Allow device to power down */
365 iwl_release_nic_access(priv);
366 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
367 }
368
369 static void iwl_continuous_event_trace(struct iwl_priv *priv)
370 {
371 u32 capacity; /* event log capacity in # entries */
372 u32 base; /* SRAM byte address of event log header */
373 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
374 u32 num_wraps; /* # times uCode wrapped to top of log */
375 u32 next_entry; /* index of next entry to be written by uCode */
376
377 base = priv->device_pointers.error_event_table;
378 if (iwlagn_hw_valid_rtc_data_addr(base)) {
379 capacity = iwl_read_targ_mem(priv, base);
380 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
381 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
382 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
383 } else
384 return;
385
386 if (num_wraps == priv->event_log.num_wraps) {
387 iwl_print_cont_event_trace(priv,
388 base, priv->event_log.next_entry,
389 next_entry - priv->event_log.next_entry,
390 mode);
391 priv->event_log.non_wraps_count++;
392 } else {
393 if ((num_wraps - priv->event_log.num_wraps) > 1)
394 priv->event_log.wraps_more_count++;
395 else
396 priv->event_log.wraps_once_count++;
397 trace_iwlwifi_dev_ucode_wrap_event(priv,
398 num_wraps - priv->event_log.num_wraps,
399 next_entry, priv->event_log.next_entry);
400 if (next_entry < priv->event_log.next_entry) {
401 iwl_print_cont_event_trace(priv, base,
402 priv->event_log.next_entry,
403 capacity - priv->event_log.next_entry,
404 mode);
405
406 iwl_print_cont_event_trace(priv, base, 0,
407 next_entry, mode);
408 } else {
409 iwl_print_cont_event_trace(priv, base,
410 next_entry, capacity - next_entry,
411 mode);
412
413 iwl_print_cont_event_trace(priv, base, 0,
414 next_entry, mode);
415 }
416 }
417 priv->event_log.num_wraps = num_wraps;
418 priv->event_log.next_entry = next_entry;
419 }
420
421 /**
422 * iwl_bg_ucode_trace - Timer callback to log ucode event
423 *
424 * The timer is continually set to execute every
425 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
426 * this function is to perform continuous uCode event logging operation
427 * if enabled
428 */
429 static void iwl_bg_ucode_trace(unsigned long data)
430 {
431 struct iwl_priv *priv = (struct iwl_priv *)data;
432
433 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
434 return;
435
436 if (priv->event_log.ucode_trace) {
437 iwl_continuous_event_trace(priv);
438 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
439 mod_timer(&priv->ucode_trace,
440 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
441 }
442 }
443
444 static void iwl_bg_tx_flush(struct work_struct *work)
445 {
446 struct iwl_priv *priv =
447 container_of(work, struct iwl_priv, tx_flush);
448
449 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
450 return;
451
452 /* do nothing if rf-kill is on */
453 if (!iwl_is_ready_rf(priv))
454 return;
455
456 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
457 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
458 }
459
460 /**
461 * iwl_rx_handle - Main entry function for receiving responses from uCode
462 *
463 * Uses the priv->rx_handlers callback function array to invoke
464 * the appropriate handlers, including command responses,
465 * frame-received notifications, and other notifications.
466 */
467 static void iwl_rx_handle(struct iwl_priv *priv)
468 {
469 struct iwl_rx_mem_buffer *rxb;
470 struct iwl_rx_packet *pkt;
471 struct iwl_rx_queue *rxq = &priv->rxq;
472 u32 r, i;
473 int reclaim;
474 unsigned long flags;
475 u8 fill_rx = 0;
476 u32 count = 8;
477 int total_empty;
478
479 /* uCode's read index (stored in shared DRAM) indicates the last Rx
480 * buffer that the driver may process (last buffer filled by ucode). */
481 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
482 i = rxq->read;
483
484 /* Rx interrupt, but nothing sent from uCode */
485 if (i == r)
486 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
487
488 /* calculate total frames need to be restock after handling RX */
489 total_empty = r - rxq->write_actual;
490 if (total_empty < 0)
491 total_empty += RX_QUEUE_SIZE;
492
493 if (total_empty > (RX_QUEUE_SIZE / 2))
494 fill_rx = 1;
495
496 while (i != r) {
497 int len;
498
499 rxb = rxq->queue[i];
500
501 /* If an RXB doesn't have a Rx queue slot associated with it,
502 * then a bug has been introduced in the queue refilling
503 * routines -- catch it here */
504 if (WARN_ON(rxb == NULL)) {
505 i = (i + 1) & RX_QUEUE_MASK;
506 continue;
507 }
508
509 rxq->queue[i] = NULL;
510
511 dma_unmap_page(priv->bus.dev, rxb->page_dma,
512 PAGE_SIZE << priv->hw_params.rx_page_order,
513 DMA_FROM_DEVICE);
514 pkt = rxb_addr(rxb);
515
516 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
517 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
518
519 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
520 len += sizeof(u32); /* account for status word */
521 trace_iwlwifi_dev_rx(priv, pkt, len);
522
523 /* Reclaim a command buffer only if this packet is a response
524 * to a (driver-originated) command.
525 * If the packet (e.g. Rx frame) originated from uCode,
526 * there is no command buffer to reclaim.
527 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
528 * but apparently a few don't get set; catch them here. */
529 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
530 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
531 (pkt->hdr.cmd != REPLY_RX) &&
532 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
533 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
534 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
535 (pkt->hdr.cmd != REPLY_TX);
536
537 iwl_rx_dispatch(priv, rxb);
538
539 /*
540 * XXX: After here, we should always check rxb->page
541 * against NULL before touching it or its virtual
542 * memory (pkt). Because some rx_handler might have
543 * already taken or freed the pages.
544 */
545
546 if (reclaim) {
547 /* Invoke any callbacks, transfer the buffer to caller,
548 * and fire off the (possibly) blocking
549 * trans_send_cmd()
550 * as we reclaim the driver command queue */
551 if (rxb->page)
552 iwl_tx_cmd_complete(priv, rxb);
553 else
554 IWL_WARN(priv, "Claim null rxb?\n");
555 }
556
557 /* Reuse the page if possible. For notification packets and
558 * SKBs that fail to Rx correctly, add them back into the
559 * rx_free list for reuse later. */
560 spin_lock_irqsave(&rxq->lock, flags);
561 if (rxb->page != NULL) {
562 rxb->page_dma = dma_map_page(priv->bus.dev, rxb->page,
563 0, PAGE_SIZE << priv->hw_params.rx_page_order,
564 DMA_FROM_DEVICE);
565 list_add_tail(&rxb->list, &rxq->rx_free);
566 rxq->free_count++;
567 } else
568 list_add_tail(&rxb->list, &rxq->rx_used);
569
570 spin_unlock_irqrestore(&rxq->lock, flags);
571
572 i = (i + 1) & RX_QUEUE_MASK;
573 /* If there are a lot of unused frames,
574 * restock the Rx queue so ucode wont assert. */
575 if (fill_rx) {
576 count++;
577 if (count >= 8) {
578 rxq->read = i;
579 iwlagn_rx_replenish_now(priv);
580 count = 0;
581 }
582 }
583 }
584
585 /* Backtrack one entry */
586 rxq->read = i;
587 if (fill_rx)
588 iwlagn_rx_replenish_now(priv);
589 else
590 iwlagn_rx_queue_restock(priv);
591 }
592
593 /* tasklet for iwlagn interrupt */
594 void iwl_irq_tasklet(struct iwl_priv *priv)
595 {
596 u32 inta = 0;
597 u32 handled = 0;
598 unsigned long flags;
599 u32 i;
600 #ifdef CONFIG_IWLWIFI_DEBUG
601 u32 inta_mask;
602 #endif
603
604 spin_lock_irqsave(&priv->lock, flags);
605
606 /* Ack/clear/reset pending uCode interrupts.
607 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
608 */
609 /* There is a hardware bug in the interrupt mask function that some
610 * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
611 * they are disabled in the CSR_INT_MASK register. Furthermore the
612 * ICT interrupt handling mechanism has another bug that might cause
613 * these unmasked interrupts fail to be detected. We workaround the
614 * hardware bugs here by ACKing all the possible interrupts so that
615 * interrupt coalescing can still be achieved.
616 */
617 iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
618
619 inta = priv->_agn.inta;
620
621 #ifdef CONFIG_IWLWIFI_DEBUG
622 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
623 /* just for debug */
624 inta_mask = iwl_read32(priv, CSR_INT_MASK);
625 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
626 inta, inta_mask);
627 }
628 #endif
629
630 spin_unlock_irqrestore(&priv->lock, flags);
631
632 /* saved interrupt in inta variable now we can reset priv->_agn.inta */
633 priv->_agn.inta = 0;
634
635 /* Now service all interrupt bits discovered above. */
636 if (inta & CSR_INT_BIT_HW_ERR) {
637 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
638
639 /* Tell the device to stop sending interrupts */
640 iwl_disable_interrupts(priv);
641
642 priv->isr_stats.hw++;
643 iwl_irq_handle_error(priv);
644
645 handled |= CSR_INT_BIT_HW_ERR;
646
647 return;
648 }
649
650 #ifdef CONFIG_IWLWIFI_DEBUG
651 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
652 /* NIC fires this, but we don't use it, redundant with WAKEUP */
653 if (inta & CSR_INT_BIT_SCD) {
654 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
655 "the frame/frames.\n");
656 priv->isr_stats.sch++;
657 }
658
659 /* Alive notification via Rx interrupt will do the real work */
660 if (inta & CSR_INT_BIT_ALIVE) {
661 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
662 priv->isr_stats.alive++;
663 }
664 }
665 #endif
666 /* Safely ignore these bits for debug checks below */
667 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
668
669 /* HW RF KILL switch toggled */
670 if (inta & CSR_INT_BIT_RF_KILL) {
671 int hw_rf_kill = 0;
672 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
673 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
674 hw_rf_kill = 1;
675
676 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
677 hw_rf_kill ? "disable radio" : "enable radio");
678
679 priv->isr_stats.rfkill++;
680
681 /* driver only loads ucode once setting the interface up.
682 * the driver allows loading the ucode even if the radio
683 * is killed. Hence update the killswitch state here. The
684 * rfkill handler will care about restarting if needed.
685 */
686 if (!test_bit(STATUS_ALIVE, &priv->status)) {
687 if (hw_rf_kill)
688 set_bit(STATUS_RF_KILL_HW, &priv->status);
689 else
690 clear_bit(STATUS_RF_KILL_HW, &priv->status);
691 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
692 }
693
694 handled |= CSR_INT_BIT_RF_KILL;
695 }
696
697 /* Chip got too hot and stopped itself */
698 if (inta & CSR_INT_BIT_CT_KILL) {
699 IWL_ERR(priv, "Microcode CT kill error detected.\n");
700 priv->isr_stats.ctkill++;
701 handled |= CSR_INT_BIT_CT_KILL;
702 }
703
704 /* Error detected by uCode */
705 if (inta & CSR_INT_BIT_SW_ERR) {
706 IWL_ERR(priv, "Microcode SW error detected. "
707 " Restarting 0x%X.\n", inta);
708 priv->isr_stats.sw++;
709 iwl_irq_handle_error(priv);
710 handled |= CSR_INT_BIT_SW_ERR;
711 }
712
713 /* uCode wakes up after power-down sleep */
714 if (inta & CSR_INT_BIT_WAKEUP) {
715 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
716 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
717 for (i = 0; i < priv->hw_params.max_txq_num; i++)
718 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
719
720 priv->isr_stats.wakeup++;
721
722 handled |= CSR_INT_BIT_WAKEUP;
723 }
724
725 /* All uCode command responses, including Tx command responses,
726 * Rx "responses" (frame-received notification), and other
727 * notifications from uCode come through here*/
728 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
729 CSR_INT_BIT_RX_PERIODIC)) {
730 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
731 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
732 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
733 iwl_write32(priv, CSR_FH_INT_STATUS,
734 CSR_FH_INT_RX_MASK);
735 }
736 if (inta & CSR_INT_BIT_RX_PERIODIC) {
737 handled |= CSR_INT_BIT_RX_PERIODIC;
738 iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
739 }
740 /* Sending RX interrupt require many steps to be done in the
741 * the device:
742 * 1- write interrupt to current index in ICT table.
743 * 2- dma RX frame.
744 * 3- update RX shared data to indicate last write index.
745 * 4- send interrupt.
746 * This could lead to RX race, driver could receive RX interrupt
747 * but the shared data changes does not reflect this;
748 * periodic interrupt will detect any dangling Rx activity.
749 */
750
751 /* Disable periodic interrupt; we use it as just a one-shot. */
752 iwl_write8(priv, CSR_INT_PERIODIC_REG,
753 CSR_INT_PERIODIC_DIS);
754 iwl_rx_handle(priv);
755
756 /*
757 * Enable periodic interrupt in 8 msec only if we received
758 * real RX interrupt (instead of just periodic int), to catch
759 * any dangling Rx interrupt. If it was just the periodic
760 * interrupt, there was no dangling Rx activity, and no need
761 * to extend the periodic interrupt; one-shot is enough.
762 */
763 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
764 iwl_write8(priv, CSR_INT_PERIODIC_REG,
765 CSR_INT_PERIODIC_ENA);
766
767 priv->isr_stats.rx++;
768 }
769
770 /* This "Tx" DMA channel is used only for loading uCode */
771 if (inta & CSR_INT_BIT_FH_TX) {
772 iwl_write32(priv, CSR_FH_INT_STATUS, CSR_FH_INT_TX_MASK);
773 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
774 priv->isr_stats.tx++;
775 handled |= CSR_INT_BIT_FH_TX;
776 /* Wake up uCode load routine, now that load is complete */
777 priv->ucode_write_complete = 1;
778 wake_up_interruptible(&priv->wait_command_queue);
779 }
780
781 if (inta & ~handled) {
782 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
783 priv->isr_stats.unhandled++;
784 }
785
786 if (inta & ~(priv->inta_mask)) {
787 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
788 inta & ~priv->inta_mask);
789 }
790
791 /* Re-enable all interrupts */
792 /* only Re-enable if disabled by irq */
793 if (test_bit(STATUS_INT_ENABLED, &priv->status))
794 iwl_enable_interrupts(priv);
795 /* Re-enable RF_KILL if it occurred */
796 else if (handled & CSR_INT_BIT_RF_KILL)
797 iwl_enable_rfkill_int(priv);
798 }
799
800 /*****************************************************************************
801 *
802 * sysfs attributes
803 *
804 *****************************************************************************/
805
806 #ifdef CONFIG_IWLWIFI_DEBUG
807
808 /*
809 * The following adds a new attribute to the sysfs representation
810 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
811 * used for controlling the debug level.
812 *
813 * See the level definitions in iwl for details.
814 *
815 * The debug_level being managed using sysfs below is a per device debug
816 * level that is used instead of the global debug level if it (the per
817 * device debug level) is set.
818 */
819 static ssize_t show_debug_level(struct device *d,
820 struct device_attribute *attr, char *buf)
821 {
822 struct iwl_priv *priv = dev_get_drvdata(d);
823 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
824 }
825 static ssize_t store_debug_level(struct device *d,
826 struct device_attribute *attr,
827 const char *buf, size_t count)
828 {
829 struct iwl_priv *priv = dev_get_drvdata(d);
830 unsigned long val;
831 int ret;
832
833 ret = strict_strtoul(buf, 0, &val);
834 if (ret)
835 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
836 else {
837 priv->debug_level = val;
838 if (iwl_alloc_traffic_mem(priv))
839 IWL_ERR(priv,
840 "Not enough memory to generate traffic log\n");
841 }
842 return strnlen(buf, count);
843 }
844
845 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
846 show_debug_level, store_debug_level);
847
848
849 #endif /* CONFIG_IWLWIFI_DEBUG */
850
851
852 static ssize_t show_temperature(struct device *d,
853 struct device_attribute *attr, char *buf)
854 {
855 struct iwl_priv *priv = dev_get_drvdata(d);
856
857 if (!iwl_is_alive(priv))
858 return -EAGAIN;
859
860 return sprintf(buf, "%d\n", priv->temperature);
861 }
862
863 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
864
865 static ssize_t show_tx_power(struct device *d,
866 struct device_attribute *attr, char *buf)
867 {
868 struct iwl_priv *priv = dev_get_drvdata(d);
869
870 if (!iwl_is_ready_rf(priv))
871 return sprintf(buf, "off\n");
872 else
873 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
874 }
875
876 static ssize_t store_tx_power(struct device *d,
877 struct device_attribute *attr,
878 const char *buf, size_t count)
879 {
880 struct iwl_priv *priv = dev_get_drvdata(d);
881 unsigned long val;
882 int ret;
883
884 ret = strict_strtoul(buf, 10, &val);
885 if (ret)
886 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
887 else {
888 ret = iwl_set_tx_power(priv, val, false);
889 if (ret)
890 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
891 ret);
892 else
893 ret = count;
894 }
895 return ret;
896 }
897
898 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
899
900 static struct attribute *iwl_sysfs_entries[] = {
901 &dev_attr_temperature.attr,
902 &dev_attr_tx_power.attr,
903 #ifdef CONFIG_IWLWIFI_DEBUG
904 &dev_attr_debug_level.attr,
905 #endif
906 NULL
907 };
908
909 static struct attribute_group iwl_attribute_group = {
910 .name = NULL, /* put in device directory */
911 .attrs = iwl_sysfs_entries,
912 };
913
914 /******************************************************************************
915 *
916 * uCode download functions
917 *
918 ******************************************************************************/
919
920 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
921 {
922 if (desc->v_addr)
923 dma_free_coherent(priv->bus.dev, desc->len,
924 desc->v_addr, desc->p_addr);
925 desc->v_addr = NULL;
926 desc->len = 0;
927 }
928
929 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
930 {
931 iwl_free_fw_desc(priv, &img->code);
932 iwl_free_fw_desc(priv, &img->data);
933 }
934
935 static void iwl_dealloc_ucode(struct iwl_priv *priv)
936 {
937 iwl_free_fw_img(priv, &priv->ucode_rt);
938 iwl_free_fw_img(priv, &priv->ucode_init);
939 }
940
941 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
942 const void *data, size_t len)
943 {
944 if (!len) {
945 desc->v_addr = NULL;
946 return -EINVAL;
947 }
948
949 desc->v_addr = dma_alloc_coherent(priv->bus.dev, len,
950 &desc->p_addr, GFP_KERNEL);
951 if (!desc->v_addr)
952 return -ENOMEM;
953
954 desc->len = len;
955 memcpy(desc->v_addr, data, len);
956 return 0;
957 }
958
959 struct iwlagn_ucode_capabilities {
960 u32 max_probe_length;
961 u32 standard_phy_calibration_size;
962 u32 flags;
963 };
964
965 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
966 static int iwl_mac_setup_register(struct iwl_priv *priv,
967 struct iwlagn_ucode_capabilities *capa);
968
969 #define UCODE_EXPERIMENTAL_INDEX 100
970 #define UCODE_EXPERIMENTAL_TAG "exp"
971
972 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
973 {
974 const char *name_pre = priv->cfg->fw_name_pre;
975 char tag[8];
976
977 if (first) {
978 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
979 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
980 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
981 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
982 #endif
983 priv->fw_index = priv->cfg->ucode_api_max;
984 sprintf(tag, "%d", priv->fw_index);
985 } else {
986 priv->fw_index--;
987 sprintf(tag, "%d", priv->fw_index);
988 }
989
990 if (priv->fw_index < priv->cfg->ucode_api_min) {
991 IWL_ERR(priv, "no suitable firmware found!\n");
992 return -ENOENT;
993 }
994
995 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
996
997 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
998 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
999 ? "EXPERIMENTAL " : "",
1000 priv->firmware_name);
1001
1002 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1003 priv->bus.dev,
1004 GFP_KERNEL, priv, iwl_ucode_callback);
1005 }
1006
1007 struct iwlagn_firmware_pieces {
1008 const void *inst, *data, *init, *init_data;
1009 size_t inst_size, data_size, init_size, init_data_size;
1010
1011 u32 build;
1012
1013 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1014 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1015 };
1016
1017 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1018 const struct firmware *ucode_raw,
1019 struct iwlagn_firmware_pieces *pieces)
1020 {
1021 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1022 u32 api_ver, hdr_size;
1023 const u8 *src;
1024
1025 priv->ucode_ver = le32_to_cpu(ucode->ver);
1026 api_ver = IWL_UCODE_API(priv->ucode_ver);
1027
1028 switch (api_ver) {
1029 default:
1030 hdr_size = 28;
1031 if (ucode_raw->size < hdr_size) {
1032 IWL_ERR(priv, "File size too small!\n");
1033 return -EINVAL;
1034 }
1035 pieces->build = le32_to_cpu(ucode->u.v2.build);
1036 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1037 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1038 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1039 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1040 src = ucode->u.v2.data;
1041 break;
1042 case 0:
1043 case 1:
1044 case 2:
1045 hdr_size = 24;
1046 if (ucode_raw->size < hdr_size) {
1047 IWL_ERR(priv, "File size too small!\n");
1048 return -EINVAL;
1049 }
1050 pieces->build = 0;
1051 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1052 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1053 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1054 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1055 src = ucode->u.v1.data;
1056 break;
1057 }
1058
1059 /* Verify size of file vs. image size info in file's header */
1060 if (ucode_raw->size != hdr_size + pieces->inst_size +
1061 pieces->data_size + pieces->init_size +
1062 pieces->init_data_size) {
1063
1064 IWL_ERR(priv,
1065 "uCode file size %d does not match expected size\n",
1066 (int)ucode_raw->size);
1067 return -EINVAL;
1068 }
1069
1070 pieces->inst = src;
1071 src += pieces->inst_size;
1072 pieces->data = src;
1073 src += pieces->data_size;
1074 pieces->init = src;
1075 src += pieces->init_size;
1076 pieces->init_data = src;
1077 src += pieces->init_data_size;
1078
1079 return 0;
1080 }
1081
1082 static int iwlagn_wanted_ucode_alternative = 1;
1083
1084 static int iwlagn_load_firmware(struct iwl_priv *priv,
1085 const struct firmware *ucode_raw,
1086 struct iwlagn_firmware_pieces *pieces,
1087 struct iwlagn_ucode_capabilities *capa)
1088 {
1089 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1090 struct iwl_ucode_tlv *tlv;
1091 size_t len = ucode_raw->size;
1092 const u8 *data;
1093 int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1094 u64 alternatives;
1095 u32 tlv_len;
1096 enum iwl_ucode_tlv_type tlv_type;
1097 const u8 *tlv_data;
1098
1099 if (len < sizeof(*ucode)) {
1100 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1101 return -EINVAL;
1102 }
1103
1104 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1105 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1106 le32_to_cpu(ucode->magic));
1107 return -EINVAL;
1108 }
1109
1110 /*
1111 * Check which alternatives are present, and "downgrade"
1112 * when the chosen alternative is not present, warning
1113 * the user when that happens. Some files may not have
1114 * any alternatives, so don't warn in that case.
1115 */
1116 alternatives = le64_to_cpu(ucode->alternatives);
1117 tmp = wanted_alternative;
1118 if (wanted_alternative > 63)
1119 wanted_alternative = 63;
1120 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1121 wanted_alternative--;
1122 if (wanted_alternative && wanted_alternative != tmp)
1123 IWL_WARN(priv,
1124 "uCode alternative %d not available, choosing %d\n",
1125 tmp, wanted_alternative);
1126
1127 priv->ucode_ver = le32_to_cpu(ucode->ver);
1128 pieces->build = le32_to_cpu(ucode->build);
1129 data = ucode->data;
1130
1131 len -= sizeof(*ucode);
1132
1133 while (len >= sizeof(*tlv)) {
1134 u16 tlv_alt;
1135
1136 len -= sizeof(*tlv);
1137 tlv = (void *)data;
1138
1139 tlv_len = le32_to_cpu(tlv->length);
1140 tlv_type = le16_to_cpu(tlv->type);
1141 tlv_alt = le16_to_cpu(tlv->alternative);
1142 tlv_data = tlv->data;
1143
1144 if (len < tlv_len) {
1145 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1146 len, tlv_len);
1147 return -EINVAL;
1148 }
1149 len -= ALIGN(tlv_len, 4);
1150 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1151
1152 /*
1153 * Alternative 0 is always valid.
1154 *
1155 * Skip alternative TLVs that are not selected.
1156 */
1157 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1158 continue;
1159
1160 switch (tlv_type) {
1161 case IWL_UCODE_TLV_INST:
1162 pieces->inst = tlv_data;
1163 pieces->inst_size = tlv_len;
1164 break;
1165 case IWL_UCODE_TLV_DATA:
1166 pieces->data = tlv_data;
1167 pieces->data_size = tlv_len;
1168 break;
1169 case IWL_UCODE_TLV_INIT:
1170 pieces->init = tlv_data;
1171 pieces->init_size = tlv_len;
1172 break;
1173 case IWL_UCODE_TLV_INIT_DATA:
1174 pieces->init_data = tlv_data;
1175 pieces->init_data_size = tlv_len;
1176 break;
1177 case IWL_UCODE_TLV_BOOT:
1178 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
1179 break;
1180 case IWL_UCODE_TLV_PROBE_MAX_LEN:
1181 if (tlv_len != sizeof(u32))
1182 goto invalid_tlv_len;
1183 capa->max_probe_length =
1184 le32_to_cpup((__le32 *)tlv_data);
1185 break;
1186 case IWL_UCODE_TLV_PAN:
1187 if (tlv_len)
1188 goto invalid_tlv_len;
1189 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
1190 break;
1191 case IWL_UCODE_TLV_FLAGS:
1192 /* must be at least one u32 */
1193 if (tlv_len < sizeof(u32))
1194 goto invalid_tlv_len;
1195 /* and a proper number of u32s */
1196 if (tlv_len % sizeof(u32))
1197 goto invalid_tlv_len;
1198 /*
1199 * This driver only reads the first u32 as
1200 * right now no more features are defined,
1201 * if that changes then either the driver
1202 * will not work with the new firmware, or
1203 * it'll not take advantage of new features.
1204 */
1205 capa->flags = le32_to_cpup((__le32 *)tlv_data);
1206 break;
1207 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1208 if (tlv_len != sizeof(u32))
1209 goto invalid_tlv_len;
1210 pieces->init_evtlog_ptr =
1211 le32_to_cpup((__le32 *)tlv_data);
1212 break;
1213 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1214 if (tlv_len != sizeof(u32))
1215 goto invalid_tlv_len;
1216 pieces->init_evtlog_size =
1217 le32_to_cpup((__le32 *)tlv_data);
1218 break;
1219 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
1220 if (tlv_len != sizeof(u32))
1221 goto invalid_tlv_len;
1222 pieces->init_errlog_ptr =
1223 le32_to_cpup((__le32 *)tlv_data);
1224 break;
1225 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
1226 if (tlv_len != sizeof(u32))
1227 goto invalid_tlv_len;
1228 pieces->inst_evtlog_ptr =
1229 le32_to_cpup((__le32 *)tlv_data);
1230 break;
1231 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
1232 if (tlv_len != sizeof(u32))
1233 goto invalid_tlv_len;
1234 pieces->inst_evtlog_size =
1235 le32_to_cpup((__le32 *)tlv_data);
1236 break;
1237 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
1238 if (tlv_len != sizeof(u32))
1239 goto invalid_tlv_len;
1240 pieces->inst_errlog_ptr =
1241 le32_to_cpup((__le32 *)tlv_data);
1242 break;
1243 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
1244 if (tlv_len)
1245 goto invalid_tlv_len;
1246 priv->enhance_sensitivity_table = true;
1247 break;
1248 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
1249 if (tlv_len != sizeof(u32))
1250 goto invalid_tlv_len;
1251 capa->standard_phy_calibration_size =
1252 le32_to_cpup((__le32 *)tlv_data);
1253 break;
1254 default:
1255 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
1256 break;
1257 }
1258 }
1259
1260 if (len) {
1261 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1262 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
1263 return -EINVAL;
1264 }
1265
1266 return 0;
1267
1268 invalid_tlv_len:
1269 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1270 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1271
1272 return -EINVAL;
1273 }
1274
1275 /**
1276 * iwl_ucode_callback - callback when firmware was loaded
1277 *
1278 * If loaded successfully, copies the firmware into buffers
1279 * for the card to fetch (via DMA).
1280 */
1281 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1282 {
1283 struct iwl_priv *priv = context;
1284 struct iwl_ucode_header *ucode;
1285 int err;
1286 struct iwlagn_firmware_pieces pieces;
1287 const unsigned int api_max = priv->cfg->ucode_api_max;
1288 const unsigned int api_min = priv->cfg->ucode_api_min;
1289 u32 api_ver;
1290 char buildstr[25];
1291 u32 build;
1292 struct iwlagn_ucode_capabilities ucode_capa = {
1293 .max_probe_length = 200,
1294 .standard_phy_calibration_size =
1295 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1296 };
1297
1298 memset(&pieces, 0, sizeof(pieces));
1299
1300 if (!ucode_raw) {
1301 if (priv->fw_index <= priv->cfg->ucode_api_max)
1302 IWL_ERR(priv,
1303 "request for firmware file '%s' failed.\n",
1304 priv->firmware_name);
1305 goto try_again;
1306 }
1307
1308 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1309 priv->firmware_name, ucode_raw->size);
1310
1311 /* Make sure that we got at least the API version number */
1312 if (ucode_raw->size < 4) {
1313 IWL_ERR(priv, "File size way too small!\n");
1314 goto try_again;
1315 }
1316
1317 /* Data from ucode file: header followed by uCode images */
1318 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1319
1320 if (ucode->ver)
1321 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1322 else
1323 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1324 &ucode_capa);
1325
1326 if (err)
1327 goto try_again;
1328
1329 api_ver = IWL_UCODE_API(priv->ucode_ver);
1330 build = pieces.build;
1331
1332 /*
1333 * api_ver should match the api version forming part of the
1334 * firmware filename ... but we don't check for that and only rely
1335 * on the API version read from firmware header from here on forward
1336 */
1337 /* no api version check required for experimental uCode */
1338 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1339 if (api_ver < api_min || api_ver > api_max) {
1340 IWL_ERR(priv,
1341 "Driver unable to support your firmware API. "
1342 "Driver supports v%u, firmware is v%u.\n",
1343 api_max, api_ver);
1344 goto try_again;
1345 }
1346
1347 if (api_ver != api_max)
1348 IWL_ERR(priv,
1349 "Firmware has old API version. Expected v%u, "
1350 "got v%u. New firmware can be obtained "
1351 "from http://www.intellinuxwireless.org.\n",
1352 api_max, api_ver);
1353 }
1354
1355 if (build)
1356 sprintf(buildstr, " build %u%s", build,
1357 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1358 ? " (EXP)" : "");
1359 else
1360 buildstr[0] = '\0';
1361
1362 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1363 IWL_UCODE_MAJOR(priv->ucode_ver),
1364 IWL_UCODE_MINOR(priv->ucode_ver),
1365 IWL_UCODE_API(priv->ucode_ver),
1366 IWL_UCODE_SERIAL(priv->ucode_ver),
1367 buildstr);
1368
1369 snprintf(priv->hw->wiphy->fw_version,
1370 sizeof(priv->hw->wiphy->fw_version),
1371 "%u.%u.%u.%u%s",
1372 IWL_UCODE_MAJOR(priv->ucode_ver),
1373 IWL_UCODE_MINOR(priv->ucode_ver),
1374 IWL_UCODE_API(priv->ucode_ver),
1375 IWL_UCODE_SERIAL(priv->ucode_ver),
1376 buildstr);
1377
1378 /*
1379 * For any of the failures below (before allocating pci memory)
1380 * we will try to load a version with a smaller API -- maybe the
1381 * user just got a corrupted version of the latest API.
1382 */
1383
1384 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1385 priv->ucode_ver);
1386 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1387 pieces.inst_size);
1388 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1389 pieces.data_size);
1390 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1391 pieces.init_size);
1392 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1393 pieces.init_data_size);
1394
1395 /* Verify that uCode images will fit in card's SRAM */
1396 if (pieces.inst_size > priv->hw_params.max_inst_size) {
1397 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1398 pieces.inst_size);
1399 goto try_again;
1400 }
1401
1402 if (pieces.data_size > priv->hw_params.max_data_size) {
1403 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1404 pieces.data_size);
1405 goto try_again;
1406 }
1407
1408 if (pieces.init_size > priv->hw_params.max_inst_size) {
1409 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1410 pieces.init_size);
1411 goto try_again;
1412 }
1413
1414 if (pieces.init_data_size > priv->hw_params.max_data_size) {
1415 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1416 pieces.init_data_size);
1417 goto try_again;
1418 }
1419
1420 /* Allocate ucode buffers for card's bus-master loading ... */
1421
1422 /* Runtime instructions and 2 copies of data:
1423 * 1) unmodified from disk
1424 * 2) backup cache for save/restore during power-downs */
1425 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1426 pieces.inst, pieces.inst_size))
1427 goto err_pci_alloc;
1428 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1429 pieces.data, pieces.data_size))
1430 goto err_pci_alloc;
1431
1432 /* Initialization instructions and data */
1433 if (pieces.init_size && pieces.init_data_size) {
1434 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1435 pieces.init, pieces.init_size))
1436 goto err_pci_alloc;
1437 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1438 pieces.init_data, pieces.init_data_size))
1439 goto err_pci_alloc;
1440 }
1441
1442 /* Now that we can no longer fail, copy information */
1443
1444 /*
1445 * The (size - 16) / 12 formula is based on the information recorded
1446 * for each event, which is of mode 1 (including timestamp) for all
1447 * new microcodes that include this information.
1448 */
1449 priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
1450 if (pieces.init_evtlog_size)
1451 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1452 else
1453 priv->_agn.init_evtlog_size =
1454 priv->cfg->base_params->max_event_log_size;
1455 priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
1456 priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1457 if (pieces.inst_evtlog_size)
1458 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1459 else
1460 priv->_agn.inst_evtlog_size =
1461 priv->cfg->base_params->max_event_log_size;
1462 priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
1463
1464 priv->new_scan_threshold_behaviour =
1465 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1466
1467 if ((priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE) &&
1468 (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN)) {
1469 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
1470 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1471 } else
1472 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1473
1474 if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
1475 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1476 else
1477 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1478
1479 /*
1480 * figure out the offset of chain noise reset and gain commands
1481 * base on the size of standard phy calibration commands table size
1482 */
1483 if (ucode_capa.standard_phy_calibration_size >
1484 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1485 ucode_capa.standard_phy_calibration_size =
1486 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1487
1488 priv->_agn.phy_calib_chain_noise_reset_cmd =
1489 ucode_capa.standard_phy_calibration_size;
1490 priv->_agn.phy_calib_chain_noise_gain_cmd =
1491 ucode_capa.standard_phy_calibration_size + 1;
1492
1493 /**************************************************
1494 * This is still part of probe() in a sense...
1495 *
1496 * 9. Setup and register with mac80211 and debugfs
1497 **************************************************/
1498 err = iwl_mac_setup_register(priv, &ucode_capa);
1499 if (err)
1500 goto out_unbind;
1501
1502 err = iwl_dbgfs_register(priv, DRV_NAME);
1503 if (err)
1504 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1505
1506 err = sysfs_create_group(&(priv->bus.dev->kobj),
1507 &iwl_attribute_group);
1508 if (err) {
1509 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1510 goto out_unbind;
1511 }
1512
1513 /* We have our copies now, allow OS release its copies */
1514 release_firmware(ucode_raw);
1515 complete(&priv->_agn.firmware_loading_complete);
1516 return;
1517
1518 try_again:
1519 /* try next, if any */
1520 if (iwl_request_firmware(priv, false))
1521 goto out_unbind;
1522 release_firmware(ucode_raw);
1523 return;
1524
1525 err_pci_alloc:
1526 IWL_ERR(priv, "failed to allocate pci memory\n");
1527 iwl_dealloc_ucode(priv);
1528 out_unbind:
1529 complete(&priv->_agn.firmware_loading_complete);
1530 device_release_driver(priv->bus.dev);
1531 release_firmware(ucode_raw);
1532 }
1533
1534 static const char * const desc_lookup_text[] = {
1535 "OK",
1536 "FAIL",
1537 "BAD_PARAM",
1538 "BAD_CHECKSUM",
1539 "NMI_INTERRUPT_WDG",
1540 "SYSASSERT",
1541 "FATAL_ERROR",
1542 "BAD_COMMAND",
1543 "HW_ERROR_TUNE_LOCK",
1544 "HW_ERROR_TEMPERATURE",
1545 "ILLEGAL_CHAN_FREQ",
1546 "VCC_NOT_STABLE",
1547 "FH_ERROR",
1548 "NMI_INTERRUPT_HOST",
1549 "NMI_INTERRUPT_ACTION_PT",
1550 "NMI_INTERRUPT_UNKNOWN",
1551 "UCODE_VERSION_MISMATCH",
1552 "HW_ERROR_ABS_LOCK",
1553 "HW_ERROR_CAL_LOCK_FAIL",
1554 "NMI_INTERRUPT_INST_ACTION_PT",
1555 "NMI_INTERRUPT_DATA_ACTION_PT",
1556 "NMI_TRM_HW_ER",
1557 "NMI_INTERRUPT_TRM",
1558 "NMI_INTERRUPT_BREAK_POINT",
1559 "DEBUG_0",
1560 "DEBUG_1",
1561 "DEBUG_2",
1562 "DEBUG_3",
1563 };
1564
1565 static struct { char *name; u8 num; } advanced_lookup[] = {
1566 { "NMI_INTERRUPT_WDG", 0x34 },
1567 { "SYSASSERT", 0x35 },
1568 { "UCODE_VERSION_MISMATCH", 0x37 },
1569 { "BAD_COMMAND", 0x38 },
1570 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1571 { "FATAL_ERROR", 0x3D },
1572 { "NMI_TRM_HW_ERR", 0x46 },
1573 { "NMI_INTERRUPT_TRM", 0x4C },
1574 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1575 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1576 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1577 { "NMI_INTERRUPT_HOST", 0x66 },
1578 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1579 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1580 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1581 { "ADVANCED_SYSASSERT", 0 },
1582 };
1583
1584 static const char *desc_lookup(u32 num)
1585 {
1586 int i;
1587 int max = ARRAY_SIZE(desc_lookup_text);
1588
1589 if (num < max)
1590 return desc_lookup_text[num];
1591
1592 max = ARRAY_SIZE(advanced_lookup) - 1;
1593 for (i = 0; i < max; i++) {
1594 if (advanced_lookup[i].num == num)
1595 break;
1596 }
1597 return advanced_lookup[i].name;
1598 }
1599
1600 #define ERROR_START_OFFSET (1 * sizeof(u32))
1601 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1602
1603 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1604 {
1605 u32 base;
1606 struct iwl_error_event_table table;
1607
1608 base = priv->device_pointers.error_event_table;
1609 if (priv->ucode_type == IWL_UCODE_INIT) {
1610 if (!base)
1611 base = priv->_agn.init_errlog_ptr;
1612 } else {
1613 if (!base)
1614 base = priv->_agn.inst_errlog_ptr;
1615 }
1616
1617 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1618 IWL_ERR(priv,
1619 "Not valid error log pointer 0x%08X for %s uCode\n",
1620 base,
1621 (priv->ucode_type == IWL_UCODE_INIT)
1622 ? "Init" : "RT");
1623 return;
1624 }
1625
1626 iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1627
1628 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1629 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1630 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1631 priv->status, table.valid);
1632 }
1633
1634 priv->isr_stats.err_code = table.error_id;
1635
1636 trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low,
1637 table.data1, table.data2, table.line,
1638 table.blink1, table.blink2, table.ilink1,
1639 table.ilink2, table.bcon_time, table.gp1,
1640 table.gp2, table.gp3, table.ucode_ver,
1641 table.hw_ver, table.brd_ver);
1642 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1643 desc_lookup(table.error_id));
1644 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1645 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1646 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1647 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1648 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1649 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1650 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1651 IWL_ERR(priv, "0x%08X | line\n", table.line);
1652 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1653 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1654 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1655 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1656 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1657 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1658 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1659 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1660 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1661 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1662 }
1663
1664 #define EVENT_START_OFFSET (4 * sizeof(u32))
1665
1666 /**
1667 * iwl_print_event_log - Dump error event log to syslog
1668 *
1669 */
1670 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1671 u32 num_events, u32 mode,
1672 int pos, char **buf, size_t bufsz)
1673 {
1674 u32 i;
1675 u32 base; /* SRAM byte address of event log header */
1676 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1677 u32 ptr; /* SRAM byte address of log data */
1678 u32 ev, time, data; /* event log data */
1679 unsigned long reg_flags;
1680
1681 if (num_events == 0)
1682 return pos;
1683
1684 base = priv->device_pointers.log_event_table;
1685 if (priv->ucode_type == IWL_UCODE_INIT) {
1686 if (!base)
1687 base = priv->_agn.init_evtlog_ptr;
1688 } else {
1689 if (!base)
1690 base = priv->_agn.inst_evtlog_ptr;
1691 }
1692
1693 if (mode == 0)
1694 event_size = 2 * sizeof(u32);
1695 else
1696 event_size = 3 * sizeof(u32);
1697
1698 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1699
1700 /* Make sure device is powered up for SRAM reads */
1701 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1702 iwl_grab_nic_access(priv);
1703
1704 /* Set starting address; reads will auto-increment */
1705 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
1706 rmb();
1707
1708 /* "time" is actually "data" for mode 0 (no timestamp).
1709 * place event id # at far right for easier visual parsing. */
1710 for (i = 0; i < num_events; i++) {
1711 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1712 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1713 if (mode == 0) {
1714 /* data, ev */
1715 if (bufsz) {
1716 pos += scnprintf(*buf + pos, bufsz - pos,
1717 "EVT_LOG:0x%08x:%04u\n",
1718 time, ev);
1719 } else {
1720 trace_iwlwifi_dev_ucode_event(priv, 0,
1721 time, ev);
1722 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1723 time, ev);
1724 }
1725 } else {
1726 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1727 if (bufsz) {
1728 pos += scnprintf(*buf + pos, bufsz - pos,
1729 "EVT_LOGT:%010u:0x%08x:%04u\n",
1730 time, data, ev);
1731 } else {
1732 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1733 time, data, ev);
1734 trace_iwlwifi_dev_ucode_event(priv, time,
1735 data, ev);
1736 }
1737 }
1738 }
1739
1740 /* Allow device to power down */
1741 iwl_release_nic_access(priv);
1742 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1743 return pos;
1744 }
1745
1746 /**
1747 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1748 */
1749 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1750 u32 num_wraps, u32 next_entry,
1751 u32 size, u32 mode,
1752 int pos, char **buf, size_t bufsz)
1753 {
1754 /*
1755 * display the newest DEFAULT_LOG_ENTRIES entries
1756 * i.e the entries just before the next ont that uCode would fill.
1757 */
1758 if (num_wraps) {
1759 if (next_entry < size) {
1760 pos = iwl_print_event_log(priv,
1761 capacity - (size - next_entry),
1762 size - next_entry, mode,
1763 pos, buf, bufsz);
1764 pos = iwl_print_event_log(priv, 0,
1765 next_entry, mode,
1766 pos, buf, bufsz);
1767 } else
1768 pos = iwl_print_event_log(priv, next_entry - size,
1769 size, mode, pos, buf, bufsz);
1770 } else {
1771 if (next_entry < size) {
1772 pos = iwl_print_event_log(priv, 0, next_entry,
1773 mode, pos, buf, bufsz);
1774 } else {
1775 pos = iwl_print_event_log(priv, next_entry - size,
1776 size, mode, pos, buf, bufsz);
1777 }
1778 }
1779 return pos;
1780 }
1781
1782 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1783
1784 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1785 char **buf, bool display)
1786 {
1787 u32 base; /* SRAM byte address of event log header */
1788 u32 capacity; /* event log capacity in # entries */
1789 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1790 u32 num_wraps; /* # times uCode wrapped to top of log */
1791 u32 next_entry; /* index of next entry to be written by uCode */
1792 u32 size; /* # entries that we'll print */
1793 u32 logsize;
1794 int pos = 0;
1795 size_t bufsz = 0;
1796
1797 base = priv->device_pointers.log_event_table;
1798 if (priv->ucode_type == IWL_UCODE_INIT) {
1799 logsize = priv->_agn.init_evtlog_size;
1800 if (!base)
1801 base = priv->_agn.init_evtlog_ptr;
1802 } else {
1803 logsize = priv->_agn.inst_evtlog_size;
1804 if (!base)
1805 base = priv->_agn.inst_evtlog_ptr;
1806 }
1807
1808 if (!iwlagn_hw_valid_rtc_data_addr(base)) {
1809 IWL_ERR(priv,
1810 "Invalid event log pointer 0x%08X for %s uCode\n",
1811 base,
1812 (priv->ucode_type == IWL_UCODE_INIT)
1813 ? "Init" : "RT");
1814 return -EINVAL;
1815 }
1816
1817 /* event log header */
1818 capacity = iwl_read_targ_mem(priv, base);
1819 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1820 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1821 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1822
1823 if (capacity > logsize) {
1824 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1825 capacity, logsize);
1826 capacity = logsize;
1827 }
1828
1829 if (next_entry > logsize) {
1830 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1831 next_entry, logsize);
1832 next_entry = logsize;
1833 }
1834
1835 size = num_wraps ? capacity : next_entry;
1836
1837 /* bail out if nothing in log */
1838 if (size == 0) {
1839 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1840 return pos;
1841 }
1842
1843 /* enable/disable bt channel inhibition */
1844 priv->bt_ch_announce = iwlagn_bt_ch_announce;
1845
1846 #ifdef CONFIG_IWLWIFI_DEBUG
1847 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1848 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1849 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1850 #else
1851 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1852 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1853 #endif
1854 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1855 size);
1856
1857 #ifdef CONFIG_IWLWIFI_DEBUG
1858 if (display) {
1859 if (full_log)
1860 bufsz = capacity * 48;
1861 else
1862 bufsz = size * 48;
1863 *buf = kmalloc(bufsz, GFP_KERNEL);
1864 if (!*buf)
1865 return -ENOMEM;
1866 }
1867 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1868 /*
1869 * if uCode has wrapped back to top of log,
1870 * start at the oldest entry,
1871 * i.e the next one that uCode would fill.
1872 */
1873 if (num_wraps)
1874 pos = iwl_print_event_log(priv, next_entry,
1875 capacity - next_entry, mode,
1876 pos, buf, bufsz);
1877 /* (then/else) start at top of log */
1878 pos = iwl_print_event_log(priv, 0,
1879 next_entry, mode, pos, buf, bufsz);
1880 } else
1881 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1882 next_entry, size, mode,
1883 pos, buf, bufsz);
1884 #else
1885 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1886 next_entry, size, mode,
1887 pos, buf, bufsz);
1888 #endif
1889 return pos;
1890 }
1891
1892 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1893 {
1894 struct iwl_ct_kill_config cmd;
1895 struct iwl_ct_kill_throttling_config adv_cmd;
1896 unsigned long flags;
1897 int ret = 0;
1898
1899 spin_lock_irqsave(&priv->lock, flags);
1900 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1901 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1902 spin_unlock_irqrestore(&priv->lock, flags);
1903 priv->thermal_throttle.ct_kill_toggle = false;
1904
1905 if (priv->cfg->base_params->support_ct_kill_exit) {
1906 adv_cmd.critical_temperature_enter =
1907 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1908 adv_cmd.critical_temperature_exit =
1909 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1910
1911 ret = trans_send_cmd_pdu(priv,
1912 REPLY_CT_KILL_CONFIG_CMD,
1913 CMD_SYNC, sizeof(adv_cmd), &adv_cmd);
1914 if (ret)
1915 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1916 else
1917 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1918 "succeeded, "
1919 "critical temperature enter is %d,"
1920 "exit is %d\n",
1921 priv->hw_params.ct_kill_threshold,
1922 priv->hw_params.ct_kill_exit_threshold);
1923 } else {
1924 cmd.critical_temperature_R =
1925 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1926
1927 ret = trans_send_cmd_pdu(priv,
1928 REPLY_CT_KILL_CONFIG_CMD,
1929 CMD_SYNC, sizeof(cmd), &cmd);
1930 if (ret)
1931 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1932 else
1933 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1934 "succeeded, "
1935 "critical temperature is %d\n",
1936 priv->hw_params.ct_kill_threshold);
1937 }
1938 }
1939
1940 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1941 {
1942 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1943 struct iwl_host_cmd cmd = {
1944 .id = CALIBRATION_CFG_CMD,
1945 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1946 .data = { &calib_cfg_cmd, },
1947 };
1948
1949 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1950 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1951 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1952
1953 return trans_send_cmd(priv, &cmd);
1954 }
1955
1956
1957 static int iwlagn_send_tx_ant_config(struct iwl_priv *priv, u8 valid_tx_ant)
1958 {
1959 struct iwl_tx_ant_config_cmd tx_ant_cmd = {
1960 .valid = cpu_to_le32(valid_tx_ant),
1961 };
1962
1963 if (IWL_UCODE_API(priv->ucode_ver) > 1) {
1964 IWL_DEBUG_HC(priv, "select valid tx ant: %u\n", valid_tx_ant);
1965 return trans_send_cmd_pdu(priv,
1966 TX_ANT_CONFIGURATION_CMD,
1967 CMD_SYNC,
1968 sizeof(struct iwl_tx_ant_config_cmd),
1969 &tx_ant_cmd);
1970 } else {
1971 IWL_DEBUG_HC(priv, "TX_ANT_CONFIGURATION_CMD not supported\n");
1972 return -EOPNOTSUPP;
1973 }
1974 }
1975
1976 /**
1977 * iwl_alive_start - called after REPLY_ALIVE notification received
1978 * from protocol/runtime uCode (initialization uCode's
1979 * Alive gets handled by iwl_init_alive_start()).
1980 */
1981 int iwl_alive_start(struct iwl_priv *priv)
1982 {
1983 int ret = 0;
1984 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1985
1986 iwl_reset_ict(priv);
1987
1988 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1989
1990 /* After the ALIVE response, we can send host commands to the uCode */
1991 set_bit(STATUS_ALIVE, &priv->status);
1992
1993 /* Enable watchdog to monitor the driver tx queues */
1994 iwl_setup_watchdog(priv);
1995
1996 if (iwl_is_rfkill(priv))
1997 return -ERFKILL;
1998
1999 /* download priority table before any calibration request */
2000 if (priv->cfg->bt_params &&
2001 priv->cfg->bt_params->advanced_bt_coexist) {
2002 /* Configure Bluetooth device coexistence support */
2003 if (priv->cfg->bt_params->bt_sco_disable)
2004 priv->bt_enable_pspoll = false;
2005 else
2006 priv->bt_enable_pspoll = true;
2007
2008 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2009 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2010 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2011 iwlagn_send_advance_bt_config(priv);
2012 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
2013 priv->cur_rssi_ctx = NULL;
2014
2015 iwlagn_send_prio_tbl(priv);
2016
2017 /* FIXME: w/a to force change uCode BT state machine */
2018 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
2019 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2020 if (ret)
2021 return ret;
2022 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
2023 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2024 if (ret)
2025 return ret;
2026 } else {
2027 /*
2028 * default is 2-wire BT coexexistence support
2029 */
2030 iwl_send_bt_config(priv);
2031 }
2032
2033 if (priv->hw_params.calib_rt_cfg)
2034 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
2035
2036 ieee80211_wake_queues(priv->hw);
2037
2038 priv->active_rate = IWL_RATES_MASK;
2039
2040 /* Configure Tx antenna selection based on H/W config */
2041 iwlagn_send_tx_ant_config(priv, priv->cfg->valid_tx_ant);
2042
2043 if (iwl_is_associated_ctx(ctx)) {
2044 struct iwl_rxon_cmd *active_rxon =
2045 (struct iwl_rxon_cmd *)&ctx->active;
2046 /* apply any changes in staging */
2047 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2048 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2049 } else {
2050 struct iwl_rxon_context *tmp;
2051 /* Initialize our rx_config data */
2052 for_each_context(priv, tmp)
2053 iwl_connection_init_rx_config(priv, tmp);
2054
2055 iwlagn_set_rxon_chain(priv, ctx);
2056 }
2057
2058 iwl_reset_run_time_calib(priv);
2059
2060 set_bit(STATUS_READY, &priv->status);
2061
2062 /* Configure the adapter for unassociated operation */
2063 ret = iwlagn_commit_rxon(priv, ctx);
2064 if (ret)
2065 return ret;
2066
2067 /* At this point, the NIC is initialized and operational */
2068 iwl_rf_kill_ct_config(priv);
2069
2070 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2071
2072 return iwl_power_update_mode(priv, true);
2073 }
2074
2075 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2076
2077 static void __iwl_down(struct iwl_priv *priv)
2078 {
2079 int exit_pending;
2080
2081 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2082
2083 iwl_scan_cancel_timeout(priv, 200);
2084
2085 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2086
2087 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2088 * to prevent rearm timer */
2089 del_timer_sync(&priv->watchdog);
2090
2091 iwl_clear_ucode_stations(priv, NULL);
2092 iwl_dealloc_bcast_stations(priv);
2093 iwl_clear_driver_stations(priv);
2094
2095 /* reset BT coex data */
2096 priv->bt_status = 0;
2097 priv->cur_rssi_ctx = NULL;
2098 priv->bt_is_sco = 0;
2099 if (priv->cfg->bt_params)
2100 priv->bt_traffic_load =
2101 priv->cfg->bt_params->bt_init_traffic_load;
2102 else
2103 priv->bt_traffic_load = 0;
2104 priv->bt_full_concurrent = false;
2105 priv->bt_ci_compliance = 0;
2106
2107 /* Wipe out the EXIT_PENDING status bit if we are not actually
2108 * exiting the module */
2109 if (!exit_pending)
2110 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2111
2112 if (priv->mac80211_registered)
2113 ieee80211_stop_queues(priv->hw);
2114
2115 /* Clear out all status bits but a few that are stable across reset */
2116 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2117 STATUS_RF_KILL_HW |
2118 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2119 STATUS_GEO_CONFIGURED |
2120 test_bit(STATUS_FW_ERROR, &priv->status) <<
2121 STATUS_FW_ERROR |
2122 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2123 STATUS_EXIT_PENDING;
2124
2125 iwlagn_stop_device(priv);
2126
2127 dev_kfree_skb(priv->beacon_skb);
2128 priv->beacon_skb = NULL;
2129 }
2130
2131 static void iwl_down(struct iwl_priv *priv)
2132 {
2133 mutex_lock(&priv->mutex);
2134 __iwl_down(priv);
2135 mutex_unlock(&priv->mutex);
2136
2137 iwl_cancel_deferred_work(priv);
2138 }
2139
2140 #define HW_READY_TIMEOUT (50)
2141
2142 /* Note: returns poll_bit return value, which is >= 0 if success */
2143 static int iwl_set_hw_ready(struct iwl_priv *priv)
2144 {
2145 int ret;
2146
2147 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2148 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2149
2150 /* See if we got it */
2151 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2152 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2153 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2154 HW_READY_TIMEOUT);
2155
2156 IWL_DEBUG_INFO(priv, "hardware%s ready\n", ret < 0 ? " not" : "");
2157 return ret;
2158 }
2159
2160 /* Note: returns standard 0/-ERROR code */
2161 int iwl_prepare_card_hw(struct iwl_priv *priv)
2162 {
2163 int ret;
2164
2165 IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
2166
2167 ret = iwl_set_hw_ready(priv);
2168 if (ret >= 0)
2169 return 0;
2170
2171 /* If HW is not ready, prepare the conditions to check again */
2172 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2173 CSR_HW_IF_CONFIG_REG_PREPARE);
2174
2175 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2176 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2177 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2178
2179 if (ret < 0)
2180 return ret;
2181
2182 /* HW should be ready by now, check again. */
2183 ret = iwl_set_hw_ready(priv);
2184 if (ret >= 0)
2185 return 0;
2186 return ret;
2187 }
2188
2189 #define MAX_HW_RESTARTS 5
2190
2191 static int __iwl_up(struct iwl_priv *priv)
2192 {
2193 struct iwl_rxon_context *ctx;
2194 int ret;
2195
2196 lockdep_assert_held(&priv->mutex);
2197
2198 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2199 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2200 return -EIO;
2201 }
2202
2203 for_each_context(priv, ctx) {
2204 ret = iwlagn_alloc_bcast_station(priv, ctx);
2205 if (ret) {
2206 iwl_dealloc_bcast_stations(priv);
2207 return ret;
2208 }
2209 }
2210
2211 ret = iwlagn_run_init_ucode(priv);
2212 if (ret) {
2213 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
2214 goto error;
2215 }
2216
2217 ret = iwlagn_load_ucode_wait_alive(priv,
2218 &priv->ucode_rt,
2219 IWL_UCODE_REGULAR);
2220 if (ret) {
2221 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
2222 goto error;
2223 }
2224
2225 ret = iwl_alive_start(priv);
2226 if (ret)
2227 goto error;
2228 return 0;
2229
2230 error:
2231 set_bit(STATUS_EXIT_PENDING, &priv->status);
2232 __iwl_down(priv);
2233 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2234
2235 IWL_ERR(priv, "Unable to initialize device.\n");
2236 return ret;
2237 }
2238
2239
2240 /*****************************************************************************
2241 *
2242 * Workqueue callbacks
2243 *
2244 *****************************************************************************/
2245
2246 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2247 {
2248 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2249 run_time_calib_work);
2250
2251 mutex_lock(&priv->mutex);
2252
2253 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2254 test_bit(STATUS_SCANNING, &priv->status)) {
2255 mutex_unlock(&priv->mutex);
2256 return;
2257 }
2258
2259 if (priv->start_calib) {
2260 iwl_chain_noise_calibration(priv);
2261 iwl_sensitivity_calibration(priv);
2262 }
2263
2264 mutex_unlock(&priv->mutex);
2265 }
2266
2267 static void iwlagn_prepare_restart(struct iwl_priv *priv)
2268 {
2269 struct iwl_rxon_context *ctx;
2270 bool bt_full_concurrent;
2271 u8 bt_ci_compliance;
2272 u8 bt_load;
2273 u8 bt_status;
2274 bool bt_is_sco;
2275
2276 lockdep_assert_held(&priv->mutex);
2277
2278 for_each_context(priv, ctx)
2279 ctx->vif = NULL;
2280 priv->is_open = 0;
2281
2282 /*
2283 * __iwl_down() will clear the BT status variables,
2284 * which is correct, but when we restart we really
2285 * want to keep them so restore them afterwards.
2286 *
2287 * The restart process will later pick them up and
2288 * re-configure the hw when we reconfigure the BT
2289 * command.
2290 */
2291 bt_full_concurrent = priv->bt_full_concurrent;
2292 bt_ci_compliance = priv->bt_ci_compliance;
2293 bt_load = priv->bt_traffic_load;
2294 bt_status = priv->bt_status;
2295 bt_is_sco = priv->bt_is_sco;
2296
2297 __iwl_down(priv);
2298
2299 priv->bt_full_concurrent = bt_full_concurrent;
2300 priv->bt_ci_compliance = bt_ci_compliance;
2301 priv->bt_traffic_load = bt_load;
2302 priv->bt_status = bt_status;
2303 priv->bt_is_sco = bt_is_sco;
2304 }
2305
2306 static void iwl_bg_restart(struct work_struct *data)
2307 {
2308 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2309
2310 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2311 return;
2312
2313 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2314 mutex_lock(&priv->mutex);
2315 iwlagn_prepare_restart(priv);
2316 mutex_unlock(&priv->mutex);
2317 iwl_cancel_deferred_work(priv);
2318 ieee80211_restart_hw(priv->hw);
2319 } else {
2320 WARN_ON(1);
2321 }
2322 }
2323
2324 static void iwl_bg_rx_replenish(struct work_struct *data)
2325 {
2326 struct iwl_priv *priv =
2327 container_of(data, struct iwl_priv, rx_replenish);
2328
2329 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2330 return;
2331
2332 mutex_lock(&priv->mutex);
2333 iwlagn_rx_replenish(priv);
2334 mutex_unlock(&priv->mutex);
2335 }
2336
2337 static int iwl_mac_offchannel_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
2338 struct ieee80211_channel *chan,
2339 enum nl80211_channel_type channel_type,
2340 unsigned int wait)
2341 {
2342 struct iwl_priv *priv = hw->priv;
2343 int ret;
2344
2345 /* Not supported if we don't have PAN */
2346 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) {
2347 ret = -EOPNOTSUPP;
2348 goto free;
2349 }
2350
2351 /* Not supported on pre-P2P firmware */
2352 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
2353 BIT(NL80211_IFTYPE_P2P_CLIENT))) {
2354 ret = -EOPNOTSUPP;
2355 goto free;
2356 }
2357
2358 mutex_lock(&priv->mutex);
2359
2360 if (!priv->contexts[IWL_RXON_CTX_PAN].is_active) {
2361 /*
2362 * If the PAN context is free, use the normal
2363 * way of doing remain-on-channel offload + TX.
2364 */
2365 ret = 1;
2366 goto out;
2367 }
2368
2369 /* TODO: queue up if scanning? */
2370 if (test_bit(STATUS_SCANNING, &priv->status) ||
2371 priv->_agn.offchan_tx_skb) {
2372 ret = -EBUSY;
2373 goto out;
2374 }
2375
2376 /*
2377 * max_scan_ie_len doesn't include the blank SSID or the header,
2378 * so need to add that again here.
2379 */
2380 if (skb->len > hw->wiphy->max_scan_ie_len + 24 + 2) {
2381 ret = -ENOBUFS;
2382 goto out;
2383 }
2384
2385 priv->_agn.offchan_tx_skb = skb;
2386 priv->_agn.offchan_tx_timeout = wait;
2387 priv->_agn.offchan_tx_chan = chan;
2388
2389 ret = iwl_scan_initiate(priv, priv->contexts[IWL_RXON_CTX_PAN].vif,
2390 IWL_SCAN_OFFCH_TX, chan->band);
2391 if (ret)
2392 priv->_agn.offchan_tx_skb = NULL;
2393 out:
2394 mutex_unlock(&priv->mutex);
2395 free:
2396 if (ret < 0)
2397 kfree_skb(skb);
2398
2399 return ret;
2400 }
2401
2402 static int iwl_mac_offchannel_tx_cancel_wait(struct ieee80211_hw *hw)
2403 {
2404 struct iwl_priv *priv = hw->priv;
2405 int ret;
2406
2407 mutex_lock(&priv->mutex);
2408
2409 if (!priv->_agn.offchan_tx_skb) {
2410 ret = -EINVAL;
2411 goto unlock;
2412 }
2413
2414 priv->_agn.offchan_tx_skb = NULL;
2415
2416 ret = iwl_scan_cancel_timeout(priv, 200);
2417 if (ret)
2418 ret = -EIO;
2419 unlock:
2420 mutex_unlock(&priv->mutex);
2421
2422 return ret;
2423 }
2424
2425 /*****************************************************************************
2426 *
2427 * mac80211 entry point functions
2428 *
2429 *****************************************************************************/
2430
2431 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2432 {
2433 .max = 1,
2434 .types = BIT(NL80211_IFTYPE_STATION),
2435 },
2436 {
2437 .max = 1,
2438 .types = BIT(NL80211_IFTYPE_AP),
2439 },
2440 };
2441
2442 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2443 {
2444 .max = 2,
2445 .types = BIT(NL80211_IFTYPE_STATION),
2446 },
2447 };
2448
2449 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2450 {
2451 .max = 1,
2452 .types = BIT(NL80211_IFTYPE_STATION),
2453 },
2454 {
2455 .max = 1,
2456 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2457 BIT(NL80211_IFTYPE_AP),
2458 },
2459 };
2460
2461 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2462 {
2463 .max = 2,
2464 .types = BIT(NL80211_IFTYPE_STATION),
2465 },
2466 {
2467 .max = 1,
2468 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2469 },
2470 };
2471
2472 static const struct ieee80211_iface_combination
2473 iwlagn_iface_combinations_dualmode[] = {
2474 { .num_different_channels = 1,
2475 .max_interfaces = 2,
2476 .beacon_int_infra_match = true,
2477 .limits = iwlagn_sta_ap_limits,
2478 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2479 },
2480 { .num_different_channels = 1,
2481 .max_interfaces = 2,
2482 .limits = iwlagn_2sta_limits,
2483 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2484 },
2485 };
2486
2487 static const struct ieee80211_iface_combination
2488 iwlagn_iface_combinations_p2p[] = {
2489 { .num_different_channels = 1,
2490 .max_interfaces = 2,
2491 .beacon_int_infra_match = true,
2492 .limits = iwlagn_p2p_sta_go_limits,
2493 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2494 },
2495 { .num_different_channels = 1,
2496 .max_interfaces = 2,
2497 .limits = iwlagn_p2p_2sta_limits,
2498 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2499 },
2500 };
2501
2502 /*
2503 * Not a mac80211 entry point function, but it fits in with all the
2504 * other mac80211 functions grouped here.
2505 */
2506 static int iwl_mac_setup_register(struct iwl_priv *priv,
2507 struct iwlagn_ucode_capabilities *capa)
2508 {
2509 int ret;
2510 struct ieee80211_hw *hw = priv->hw;
2511 struct iwl_rxon_context *ctx;
2512
2513 hw->rate_control_algorithm = "iwl-agn-rs";
2514
2515 /* Tell mac80211 our characteristics */
2516 hw->flags = IEEE80211_HW_SIGNAL_DBM |
2517 IEEE80211_HW_AMPDU_AGGREGATION |
2518 IEEE80211_HW_NEED_DTIM_PERIOD |
2519 IEEE80211_HW_SPECTRUM_MGMT |
2520 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2521
2522 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2523
2524 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2525 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2526
2527 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
2528 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2529 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2530
2531 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2532 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2533
2534 hw->sta_data_size = sizeof(struct iwl_station_priv);
2535 hw->vif_data_size = sizeof(struct iwl_vif_priv);
2536
2537 for_each_context(priv, ctx) {
2538 hw->wiphy->interface_modes |= ctx->interface_modes;
2539 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2540 }
2541
2542 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2543
2544 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
2545 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2546 hw->wiphy->n_iface_combinations =
2547 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
2548 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
2549 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2550 hw->wiphy->n_iface_combinations =
2551 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2552 }
2553
2554 hw->wiphy->max_remain_on_channel_duration = 1000;
2555
2556 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2557 WIPHY_FLAG_DISABLE_BEACON_HINTS |
2558 WIPHY_FLAG_IBSS_RSN;
2559
2560 if (iwlagn_mod_params.power_save)
2561 hw->wiphy->flags |= WIPHY_FLAG_PS_ON_BY_DEFAULT;
2562 else
2563 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2564
2565 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2566 /* we create the 802.11 header and a zero-length SSID element */
2567 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2568
2569 /* Default value; 4 EDCA QOS priorities */
2570 hw->queues = 4;
2571
2572 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2573
2574 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2575 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2576 &priv->bands[IEEE80211_BAND_2GHZ];
2577 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2578 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2579 &priv->bands[IEEE80211_BAND_5GHZ];
2580
2581 iwl_leds_init(priv);
2582
2583 ret = ieee80211_register_hw(priv->hw);
2584 if (ret) {
2585 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2586 return ret;
2587 }
2588 priv->mac80211_registered = 1;
2589
2590 return 0;
2591 }
2592
2593
2594 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2595 {
2596 struct iwl_priv *priv = hw->priv;
2597 int ret;
2598
2599 IWL_DEBUG_MAC80211(priv, "enter\n");
2600
2601 /* we should be verifying the device is ready to be opened */
2602 mutex_lock(&priv->mutex);
2603 ret = __iwl_up(priv);
2604 mutex_unlock(&priv->mutex);
2605 if (ret)
2606 return ret;
2607
2608 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2609
2610 /* Now we should be done, and the READY bit should be set. */
2611 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
2612 ret = -EIO;
2613
2614 iwlagn_led_enable(priv);
2615
2616 priv->is_open = 1;
2617 IWL_DEBUG_MAC80211(priv, "leave\n");
2618 return 0;
2619 }
2620
2621 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2622 {
2623 struct iwl_priv *priv = hw->priv;
2624
2625 IWL_DEBUG_MAC80211(priv, "enter\n");
2626
2627 if (!priv->is_open)
2628 return;
2629
2630 priv->is_open = 0;
2631
2632 iwl_down(priv);
2633
2634 flush_workqueue(priv->workqueue);
2635
2636 /* User space software may expect getting rfkill changes
2637 * even if interface is down */
2638 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2639 iwl_enable_rfkill_int(priv);
2640
2641 IWL_DEBUG_MAC80211(priv, "leave\n");
2642 }
2643
2644 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2645 {
2646 struct iwl_priv *priv = hw->priv;
2647
2648 IWL_DEBUG_MACDUMP(priv, "enter\n");
2649
2650 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2651 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2652
2653 if (iwlagn_tx_skb(priv, skb))
2654 dev_kfree_skb_any(skb);
2655
2656 IWL_DEBUG_MACDUMP(priv, "leave\n");
2657 }
2658
2659 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2660 struct ieee80211_vif *vif,
2661 struct ieee80211_key_conf *keyconf,
2662 struct ieee80211_sta *sta,
2663 u32 iv32, u16 *phase1key)
2664 {
2665 struct iwl_priv *priv = hw->priv;
2666 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2667
2668 IWL_DEBUG_MAC80211(priv, "enter\n");
2669
2670 iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
2671 iv32, phase1key);
2672
2673 IWL_DEBUG_MAC80211(priv, "leave\n");
2674 }
2675
2676 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2677 struct ieee80211_vif *vif,
2678 struct ieee80211_sta *sta,
2679 struct ieee80211_key_conf *key)
2680 {
2681 struct iwl_priv *priv = hw->priv;
2682 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2683 struct iwl_rxon_context *ctx = vif_priv->ctx;
2684 int ret;
2685 u8 sta_id;
2686 bool is_default_wep_key = false;
2687
2688 IWL_DEBUG_MAC80211(priv, "enter\n");
2689
2690 if (iwlagn_mod_params.sw_crypto) {
2691 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2692 return -EOPNOTSUPP;
2693 }
2694
2695 /*
2696 * To support IBSS RSN, don't program group keys in IBSS, the
2697 * hardware will then not attempt to decrypt the frames.
2698 */
2699 if (vif->type == NL80211_IFTYPE_ADHOC &&
2700 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
2701 return -EOPNOTSUPP;
2702
2703 sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
2704 if (sta_id == IWL_INVALID_STATION)
2705 return -EINVAL;
2706
2707 mutex_lock(&priv->mutex);
2708 iwl_scan_cancel_timeout(priv, 100);
2709
2710 /*
2711 * If we are getting WEP group key and we didn't receive any key mapping
2712 * so far, we are in legacy wep mode (group key only), otherwise we are
2713 * in 1X mode.
2714 * In legacy wep mode, we use another host command to the uCode.
2715 */
2716 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2717 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2718 !sta) {
2719 if (cmd == SET_KEY)
2720 is_default_wep_key = !ctx->key_mapping_keys;
2721 else
2722 is_default_wep_key =
2723 (key->hw_key_idx == HW_KEY_DEFAULT);
2724 }
2725
2726 switch (cmd) {
2727 case SET_KEY:
2728 if (is_default_wep_key)
2729 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2730 else
2731 ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
2732 key, sta_id);
2733
2734 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2735 break;
2736 case DISABLE_KEY:
2737 if (is_default_wep_key)
2738 ret = iwl_remove_default_wep_key(priv, ctx, key);
2739 else
2740 ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
2741
2742 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2743 break;
2744 default:
2745 ret = -EINVAL;
2746 }
2747
2748 mutex_unlock(&priv->mutex);
2749 IWL_DEBUG_MAC80211(priv, "leave\n");
2750
2751 return ret;
2752 }
2753
2754 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2755 struct ieee80211_vif *vif,
2756 enum ieee80211_ampdu_mlme_action action,
2757 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2758 u8 buf_size)
2759 {
2760 struct iwl_priv *priv = hw->priv;
2761 int ret = -EINVAL;
2762 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2763
2764 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2765 sta->addr, tid);
2766
2767 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2768 return -EACCES;
2769
2770 mutex_lock(&priv->mutex);
2771
2772 switch (action) {
2773 case IEEE80211_AMPDU_RX_START:
2774 IWL_DEBUG_HT(priv, "start Rx\n");
2775 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2776 break;
2777 case IEEE80211_AMPDU_RX_STOP:
2778 IWL_DEBUG_HT(priv, "stop Rx\n");
2779 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2780 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2781 ret = 0;
2782 break;
2783 case IEEE80211_AMPDU_TX_START:
2784 IWL_DEBUG_HT(priv, "start Tx\n");
2785 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2786 if (ret == 0) {
2787 priv->_agn.agg_tids_count++;
2788 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2789 priv->_agn.agg_tids_count);
2790 }
2791 break;
2792 case IEEE80211_AMPDU_TX_STOP:
2793 IWL_DEBUG_HT(priv, "stop Tx\n");
2794 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2795 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
2796 priv->_agn.agg_tids_count--;
2797 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2798 priv->_agn.agg_tids_count);
2799 }
2800 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2801 ret = 0;
2802 if (priv->cfg->ht_params &&
2803 priv->cfg->ht_params->use_rts_for_aggregation) {
2804 /*
2805 * switch off RTS/CTS if it was previously enabled
2806 */
2807 sta_priv->lq_sta.lq.general_params.flags &=
2808 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2809 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2810 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2811 }
2812 break;
2813 case IEEE80211_AMPDU_TX_OPERATIONAL:
2814 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2815
2816 iwlagn_txq_agg_queue_setup(priv, sta, tid, buf_size);
2817
2818 /*
2819 * If the limit is 0, then it wasn't initialised yet,
2820 * use the default. We can do that since we take the
2821 * minimum below, and we don't want to go above our
2822 * default due to hardware restrictions.
2823 */
2824 if (sta_priv->max_agg_bufsize == 0)
2825 sta_priv->max_agg_bufsize =
2826 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2827
2828 /*
2829 * Even though in theory the peer could have different
2830 * aggregation reorder buffer sizes for different sessions,
2831 * our ucode doesn't allow for that and has a global limit
2832 * for each station. Therefore, use the minimum of all the
2833 * aggregation sessions and our default value.
2834 */
2835 sta_priv->max_agg_bufsize =
2836 min(sta_priv->max_agg_bufsize, buf_size);
2837
2838 if (priv->cfg->ht_params &&
2839 priv->cfg->ht_params->use_rts_for_aggregation) {
2840 /*
2841 * switch to RTS/CTS if it is the prefer protection
2842 * method for HT traffic
2843 */
2844
2845 sta_priv->lq_sta.lq.general_params.flags |=
2846 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2847 }
2848
2849 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2850 sta_priv->max_agg_bufsize;
2851
2852 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2853 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2854
2855 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2856 sta->addr, tid);
2857 ret = 0;
2858 break;
2859 }
2860 mutex_unlock(&priv->mutex);
2861
2862 return ret;
2863 }
2864
2865 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2866 struct ieee80211_vif *vif,
2867 struct ieee80211_sta *sta)
2868 {
2869 struct iwl_priv *priv = hw->priv;
2870 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2871 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2872 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2873 int ret;
2874 u8 sta_id;
2875
2876 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2877 sta->addr);
2878 mutex_lock(&priv->mutex);
2879 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2880 sta->addr);
2881 sta_priv->common.sta_id = IWL_INVALID_STATION;
2882
2883 atomic_set(&sta_priv->pending_frames, 0);
2884 if (vif->type == NL80211_IFTYPE_AP)
2885 sta_priv->client = true;
2886
2887 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2888 is_ap, sta, &sta_id);
2889 if (ret) {
2890 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2891 sta->addr, ret);
2892 /* Should we return success if return code is EEXIST ? */
2893 mutex_unlock(&priv->mutex);
2894 return ret;
2895 }
2896
2897 sta_priv->common.sta_id = sta_id;
2898
2899 /* Initialize rate scaling */
2900 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2901 sta->addr);
2902 iwl_rs_rate_init(priv, sta, sta_id);
2903 mutex_unlock(&priv->mutex);
2904
2905 return 0;
2906 }
2907
2908 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2909 struct ieee80211_channel_switch *ch_switch)
2910 {
2911 struct iwl_priv *priv = hw->priv;
2912 const struct iwl_channel_info *ch_info;
2913 struct ieee80211_conf *conf = &hw->conf;
2914 struct ieee80211_channel *channel = ch_switch->channel;
2915 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2916 /*
2917 * MULTI-FIXME
2918 * When we add support for multiple interfaces, we need to
2919 * revisit this. The channel switch command in the device
2920 * only affects the BSS context, but what does that really
2921 * mean? And what if we get a CSA on the second interface?
2922 * This needs a lot of work.
2923 */
2924 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2925 u16 ch;
2926
2927 IWL_DEBUG_MAC80211(priv, "enter\n");
2928
2929 mutex_lock(&priv->mutex);
2930
2931 if (iwl_is_rfkill(priv))
2932 goto out;
2933
2934 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2935 test_bit(STATUS_SCANNING, &priv->status) ||
2936 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
2937 goto out;
2938
2939 if (!iwl_is_associated_ctx(ctx))
2940 goto out;
2941
2942 if (!priv->cfg->lib->set_channel_switch)
2943 goto out;
2944
2945 ch = channel->hw_value;
2946 if (le16_to_cpu(ctx->active.channel) == ch)
2947 goto out;
2948
2949 ch_info = iwl_get_channel_info(priv, channel->band, ch);
2950 if (!is_channel_valid(ch_info)) {
2951 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2952 goto out;
2953 }
2954
2955 spin_lock_irq(&priv->lock);
2956
2957 priv->current_ht_config.smps = conf->smps_mode;
2958
2959 /* Configure HT40 channels */
2960 ctx->ht.enabled = conf_is_ht(conf);
2961 if (ctx->ht.enabled) {
2962 if (conf_is_ht40_minus(conf)) {
2963 ctx->ht.extension_chan_offset =
2964 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2965 ctx->ht.is_40mhz = true;
2966 } else if (conf_is_ht40_plus(conf)) {
2967 ctx->ht.extension_chan_offset =
2968 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2969 ctx->ht.is_40mhz = true;
2970 } else {
2971 ctx->ht.extension_chan_offset =
2972 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2973 ctx->ht.is_40mhz = false;
2974 }
2975 } else
2976 ctx->ht.is_40mhz = false;
2977
2978 if ((le16_to_cpu(ctx->staging.channel) != ch))
2979 ctx->staging.flags = 0;
2980
2981 iwl_set_rxon_channel(priv, channel, ctx);
2982 iwl_set_rxon_ht(priv, ht_conf);
2983 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2984
2985 spin_unlock_irq(&priv->lock);
2986
2987 iwl_set_rate(priv);
2988 /*
2989 * at this point, staging_rxon has the
2990 * configuration for channel switch
2991 */
2992 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
2993 priv->switch_channel = cpu_to_le16(ch);
2994 if (priv->cfg->lib->set_channel_switch(priv, ch_switch)) {
2995 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
2996 priv->switch_channel = 0;
2997 ieee80211_chswitch_done(ctx->vif, false);
2998 }
2999
3000 out:
3001 mutex_unlock(&priv->mutex);
3002 IWL_DEBUG_MAC80211(priv, "leave\n");
3003 }
3004
3005 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
3006 unsigned int changed_flags,
3007 unsigned int *total_flags,
3008 u64 multicast)
3009 {
3010 struct iwl_priv *priv = hw->priv;
3011 __le32 filter_or = 0, filter_nand = 0;
3012 struct iwl_rxon_context *ctx;
3013
3014 #define CHK(test, flag) do { \
3015 if (*total_flags & (test)) \
3016 filter_or |= (flag); \
3017 else \
3018 filter_nand |= (flag); \
3019 } while (0)
3020
3021 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3022 changed_flags, *total_flags);
3023
3024 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3025 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3026 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
3027 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3028
3029 #undef CHK
3030
3031 mutex_lock(&priv->mutex);
3032
3033 for_each_context(priv, ctx) {
3034 ctx->staging.filter_flags &= ~filter_nand;
3035 ctx->staging.filter_flags |= filter_or;
3036
3037 /*
3038 * Not committing directly because hardware can perform a scan,
3039 * but we'll eventually commit the filter flags change anyway.
3040 */
3041 }
3042
3043 mutex_unlock(&priv->mutex);
3044
3045 /*
3046 * Receiving all multicast frames is always enabled by the
3047 * default flags setup in iwl_connection_init_rx_config()
3048 * since we currently do not support programming multicast
3049 * filters into the device.
3050 */
3051 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3052 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3053 }
3054
3055 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3056 {
3057 struct iwl_priv *priv = hw->priv;
3058
3059 mutex_lock(&priv->mutex);
3060 IWL_DEBUG_MAC80211(priv, "enter\n");
3061
3062 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3063 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3064 goto done;
3065 }
3066 if (iwl_is_rfkill(priv)) {
3067 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3068 goto done;
3069 }
3070
3071 /*
3072 * mac80211 will not push any more frames for transmit
3073 * until the flush is completed
3074 */
3075 if (drop) {
3076 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3077 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
3078 IWL_ERR(priv, "flush request fail\n");
3079 goto done;
3080 }
3081 }
3082 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3083 iwlagn_wait_tx_queue_empty(priv);
3084 done:
3085 mutex_unlock(&priv->mutex);
3086 IWL_DEBUG_MAC80211(priv, "leave\n");
3087 }
3088
3089 static void iwlagn_disable_roc(struct iwl_priv *priv)
3090 {
3091 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3092 struct ieee80211_channel *chan = ACCESS_ONCE(priv->hw->conf.channel);
3093
3094 lockdep_assert_held(&priv->mutex);
3095
3096 if (!ctx->is_active)
3097 return;
3098
3099 ctx->staging.dev_type = RXON_DEV_TYPE_2STA;
3100 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3101 iwl_set_rxon_channel(priv, chan, ctx);
3102 iwl_set_flags_for_band(priv, ctx, chan->band, NULL);
3103
3104 priv->_agn.hw_roc_channel = NULL;
3105
3106 iwlagn_commit_rxon(priv, ctx);
3107
3108 ctx->is_active = false;
3109 }
3110
3111 static void iwlagn_bg_roc_done(struct work_struct *work)
3112 {
3113 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3114 _agn.hw_roc_work.work);
3115
3116 mutex_lock(&priv->mutex);
3117 ieee80211_remain_on_channel_expired(priv->hw);
3118 iwlagn_disable_roc(priv);
3119 mutex_unlock(&priv->mutex);
3120 }
3121
3122 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
3123 struct ieee80211_channel *channel,
3124 enum nl80211_channel_type channel_type,
3125 int duration)
3126 {
3127 struct iwl_priv *priv = hw->priv;
3128 int err = 0;
3129
3130 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3131 return -EOPNOTSUPP;
3132
3133 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
3134 BIT(NL80211_IFTYPE_P2P_CLIENT)))
3135 return -EOPNOTSUPP;
3136
3137 mutex_lock(&priv->mutex);
3138
3139 if (priv->contexts[IWL_RXON_CTX_PAN].is_active ||
3140 test_bit(STATUS_SCAN_HW, &priv->status)) {
3141 err = -EBUSY;
3142 goto out;
3143 }
3144
3145 priv->contexts[IWL_RXON_CTX_PAN].is_active = true;
3146 priv->_agn.hw_roc_channel = channel;
3147 priv->_agn.hw_roc_chantype = channel_type;
3148 priv->_agn.hw_roc_duration = DIV_ROUND_UP(duration * 1000, 1024);
3149 iwlagn_commit_rxon(priv, &priv->contexts[IWL_RXON_CTX_PAN]);
3150 queue_delayed_work(priv->workqueue, &priv->_agn.hw_roc_work,
3151 msecs_to_jiffies(duration + 20));
3152
3153 msleep(IWL_MIN_SLOT_TIME); /* TU is almost ms */
3154 ieee80211_ready_on_channel(priv->hw);
3155
3156 out:
3157 mutex_unlock(&priv->mutex);
3158
3159 return err;
3160 }
3161
3162 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
3163 {
3164 struct iwl_priv *priv = hw->priv;
3165
3166 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3167 return -EOPNOTSUPP;
3168
3169 cancel_delayed_work_sync(&priv->_agn.hw_roc_work);
3170
3171 mutex_lock(&priv->mutex);
3172 iwlagn_disable_roc(priv);
3173 mutex_unlock(&priv->mutex);
3174
3175 return 0;
3176 }
3177
3178 /*****************************************************************************
3179 *
3180 * driver setup and teardown
3181 *
3182 *****************************************************************************/
3183
3184 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3185 {
3186 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3187
3188 init_waitqueue_head(&priv->wait_command_queue);
3189
3190 INIT_WORK(&priv->restart, iwl_bg_restart);
3191 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3192 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3193 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3194 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3195 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3196 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3197 INIT_DELAYED_WORK(&priv->_agn.hw_roc_work, iwlagn_bg_roc_done);
3198
3199 iwl_setup_scan_deferred_work(priv);
3200
3201 if (priv->cfg->lib->setup_deferred_work)
3202 priv->cfg->lib->setup_deferred_work(priv);
3203
3204 init_timer(&priv->statistics_periodic);
3205 priv->statistics_periodic.data = (unsigned long)priv;
3206 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3207
3208 init_timer(&priv->ucode_trace);
3209 priv->ucode_trace.data = (unsigned long)priv;
3210 priv->ucode_trace.function = iwl_bg_ucode_trace;
3211
3212 init_timer(&priv->watchdog);
3213 priv->watchdog.data = (unsigned long)priv;
3214 priv->watchdog.function = iwl_bg_watchdog;
3215 }
3216
3217 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3218 {
3219 if (priv->cfg->lib->cancel_deferred_work)
3220 priv->cfg->lib->cancel_deferred_work(priv);
3221
3222 cancel_work_sync(&priv->run_time_calib_work);
3223 cancel_work_sync(&priv->beacon_update);
3224
3225 iwl_cancel_scan_deferred_work(priv);
3226
3227 cancel_work_sync(&priv->bt_full_concurrency);
3228 cancel_work_sync(&priv->bt_runtime_config);
3229
3230 del_timer_sync(&priv->statistics_periodic);
3231 del_timer_sync(&priv->ucode_trace);
3232 }
3233
3234 static void iwl_init_hw_rates(struct iwl_priv *priv,
3235 struct ieee80211_rate *rates)
3236 {
3237 int i;
3238
3239 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3240 rates[i].bitrate = iwl_rates[i].ieee * 5;
3241 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3242 rates[i].hw_value_short = i;
3243 rates[i].flags = 0;
3244 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3245 /*
3246 * If CCK != 1M then set short preamble rate flag.
3247 */
3248 rates[i].flags |=
3249 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3250 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3251 }
3252 }
3253 }
3254
3255 static int iwl_init_drv(struct iwl_priv *priv)
3256 {
3257 int ret;
3258
3259 spin_lock_init(&priv->sta_lock);
3260 spin_lock_init(&priv->hcmd_lock);
3261
3262 mutex_init(&priv->mutex);
3263
3264 priv->ieee_channels = NULL;
3265 priv->ieee_rates = NULL;
3266 priv->band = IEEE80211_BAND_2GHZ;
3267
3268 priv->iw_mode = NL80211_IFTYPE_STATION;
3269 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3270 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3271 priv->_agn.agg_tids_count = 0;
3272
3273 /* initialize force reset */
3274 priv->force_reset[IWL_RF_RESET].reset_duration =
3275 IWL_DELAY_NEXT_FORCE_RF_RESET;
3276 priv->force_reset[IWL_FW_RESET].reset_duration =
3277 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3278
3279 priv->rx_statistics_jiffies = jiffies;
3280
3281 /* Choose which receivers/antennas to use */
3282 iwlagn_set_rxon_chain(priv, &priv->contexts[IWL_RXON_CTX_BSS]);
3283
3284 iwl_init_scan_params(priv);
3285
3286 /* init bt coex */
3287 if (priv->cfg->bt_params &&
3288 priv->cfg->bt_params->advanced_bt_coexist) {
3289 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3290 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3291 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3292 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3293 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3294 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3295 }
3296
3297 ret = iwl_init_channel_map(priv);
3298 if (ret) {
3299 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3300 goto err;
3301 }
3302
3303 ret = iwlcore_init_geos(priv);
3304 if (ret) {
3305 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3306 goto err_free_channel_map;
3307 }
3308 iwl_init_hw_rates(priv, priv->ieee_rates);
3309
3310 return 0;
3311
3312 err_free_channel_map:
3313 iwl_free_channel_map(priv);
3314 err:
3315 return ret;
3316 }
3317
3318 static void iwl_uninit_drv(struct iwl_priv *priv)
3319 {
3320 iwl_calib_free_results(priv);
3321 iwlcore_free_geos(priv);
3322 iwl_free_channel_map(priv);
3323 kfree(priv->scan_cmd);
3324 kfree(priv->beacon_cmd);
3325 }
3326
3327 static void iwl_mac_rssi_callback(struct ieee80211_hw *hw,
3328 enum ieee80211_rssi_event rssi_event)
3329 {
3330 struct iwl_priv *priv = hw->priv;
3331
3332 mutex_lock(&priv->mutex);
3333
3334 if (priv->cfg->bt_params &&
3335 priv->cfg->bt_params->advanced_bt_coexist) {
3336 if (rssi_event == RSSI_EVENT_LOW)
3337 priv->bt_enable_pspoll = true;
3338 else if (rssi_event == RSSI_EVENT_HIGH)
3339 priv->bt_enable_pspoll = false;
3340
3341 iwlagn_send_advance_bt_config(priv);
3342 } else {
3343 IWL_DEBUG_MAC80211(priv, "Advanced BT coex disabled,"
3344 "ignoring RSSI callback\n");
3345 }
3346
3347 mutex_unlock(&priv->mutex);
3348 }
3349
3350 struct ieee80211_ops iwlagn_hw_ops = {
3351 .tx = iwlagn_mac_tx,
3352 .start = iwlagn_mac_start,
3353 .stop = iwlagn_mac_stop,
3354 .add_interface = iwl_mac_add_interface,
3355 .remove_interface = iwl_mac_remove_interface,
3356 .change_interface = iwl_mac_change_interface,
3357 .config = iwlagn_mac_config,
3358 .configure_filter = iwlagn_configure_filter,
3359 .set_key = iwlagn_mac_set_key,
3360 .update_tkip_key = iwlagn_mac_update_tkip_key,
3361 .conf_tx = iwl_mac_conf_tx,
3362 .bss_info_changed = iwlagn_bss_info_changed,
3363 .ampdu_action = iwlagn_mac_ampdu_action,
3364 .hw_scan = iwl_mac_hw_scan,
3365 .sta_notify = iwlagn_mac_sta_notify,
3366 .sta_add = iwlagn_mac_sta_add,
3367 .sta_remove = iwl_mac_sta_remove,
3368 .channel_switch = iwlagn_mac_channel_switch,
3369 .flush = iwlagn_mac_flush,
3370 .tx_last_beacon = iwl_mac_tx_last_beacon,
3371 .remain_on_channel = iwl_mac_remain_on_channel,
3372 .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3373 .offchannel_tx = iwl_mac_offchannel_tx,
3374 .offchannel_tx_cancel_wait = iwl_mac_offchannel_tx_cancel_wait,
3375 .rssi_callback = iwl_mac_rssi_callback,
3376 CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3377 CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3378 };
3379
3380 static u32 iwl_hw_detect(struct iwl_priv *priv)
3381 {
3382 return iwl_read32(priv, CSR_HW_REV);
3383 }
3384
3385 static int iwl_set_hw_params(struct iwl_priv *priv)
3386 {
3387 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
3388 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
3389 if (iwlagn_mod_params.amsdu_size_8K)
3390 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
3391 else
3392 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
3393
3394 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3395
3396 if (iwlagn_mod_params.disable_11n)
3397 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3398
3399 /* Device-specific setup */
3400 return priv->cfg->lib->set_hw_params(priv);
3401 }
3402
3403 static const u8 iwlagn_bss_ac_to_fifo[] = {
3404 IWL_TX_FIFO_VO,
3405 IWL_TX_FIFO_VI,
3406 IWL_TX_FIFO_BE,
3407 IWL_TX_FIFO_BK,
3408 };
3409
3410 static const u8 iwlagn_bss_ac_to_queue[] = {
3411 0, 1, 2, 3,
3412 };
3413
3414 static const u8 iwlagn_pan_ac_to_fifo[] = {
3415 IWL_TX_FIFO_VO_IPAN,
3416 IWL_TX_FIFO_VI_IPAN,
3417 IWL_TX_FIFO_BE_IPAN,
3418 IWL_TX_FIFO_BK_IPAN,
3419 };
3420
3421 static const u8 iwlagn_pan_ac_to_queue[] = {
3422 7, 6, 5, 4,
3423 };
3424
3425 /* This function both allocates and initializes hw and priv. */
3426 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3427 {
3428 struct iwl_priv *priv;
3429 /* mac80211 allocates memory for this device instance, including
3430 * space for this driver's private structure */
3431 struct ieee80211_hw *hw;
3432
3433 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3434 if (hw == NULL) {
3435 pr_err("%s: Can not allocate network device\n",
3436 cfg->name);
3437 goto out;
3438 }
3439
3440 priv = hw->priv;
3441 priv->hw = hw;
3442
3443 out:
3444 return hw;
3445 }
3446
3447 static void iwl_init_context(struct iwl_priv *priv)
3448 {
3449 int i;
3450
3451 /*
3452 * The default context is always valid,
3453 * more may be discovered when firmware
3454 * is loaded.
3455 */
3456 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3457
3458 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3459 priv->contexts[i].ctxid = i;
3460
3461 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
3462 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
3463 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3464 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3465 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3466 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3467 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3468 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3469 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
3470 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
3471 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
3472 BIT(NL80211_IFTYPE_ADHOC);
3473 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
3474 BIT(NL80211_IFTYPE_STATION);
3475 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
3476 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
3477 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
3478 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
3479
3480 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
3481 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
3482 REPLY_WIPAN_RXON_TIMING;
3483 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
3484 REPLY_WIPAN_RXON_ASSOC;
3485 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
3486 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
3487 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
3488 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
3489 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
3490 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
3491 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
3492 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
3493 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
3494 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
3495 #ifdef CONFIG_IWL_P2P
3496 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
3497 BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO);
3498 #endif
3499 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
3500 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
3501 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
3502
3503 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
3504 }
3505
3506 int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops,
3507 struct iwl_cfg *cfg)
3508 {
3509 int err = 0;
3510 struct iwl_priv *priv;
3511 struct ieee80211_hw *hw;
3512 u16 num_mac;
3513 u32 hw_rev;
3514
3515 /************************
3516 * 1. Allocating HW data
3517 ************************/
3518 hw = iwl_alloc_all(cfg);
3519 if (!hw) {
3520 err = -ENOMEM;
3521 goto out;
3522 }
3523
3524 priv = hw->priv;
3525
3526 priv->bus.priv = priv;
3527 priv->bus.bus_specific = bus_specific;
3528 priv->bus.ops = bus_ops;
3529 priv->bus.irq = priv->bus.ops->get_irq(&priv->bus);
3530 priv->bus.ops->set_drv_data(&priv->bus, priv);
3531 priv->bus.dev = priv->bus.ops->get_dev(&priv->bus);
3532
3533 /* At this point both hw and priv are allocated. */
3534
3535 SET_IEEE80211_DEV(hw, priv->bus.dev);
3536
3537 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3538 priv->cfg = cfg;
3539 priv->inta_mask = CSR_INI_SET_MASK;
3540
3541 err = iwl_trans_register(priv);
3542 if (err)
3543 goto out_free_priv;
3544
3545 /* is antenna coupling more than 35dB ? */
3546 priv->bt_ant_couple_ok =
3547 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3548 true : false;
3549
3550 /* enable/disable bt channel inhibition */
3551 priv->bt_ch_announce = iwlagn_bt_ch_announce;
3552 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3553 (priv->bt_ch_announce) ? "On" : "Off");
3554
3555 if (iwl_alloc_traffic_mem(priv))
3556 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3557
3558
3559 /* these spin locks will be used in apm_ops.init and EEPROM access
3560 * we should init now
3561 */
3562 spin_lock_init(&priv->reg_lock);
3563 spin_lock_init(&priv->lock);
3564
3565 /*
3566 * stop and reset the on-board processor just in case it is in a
3567 * strange state ... like being left stranded by a primary kernel
3568 * and this is now the kdump kernel trying to start up
3569 */
3570 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3571
3572 /***********************
3573 * 3. Read REV register
3574 ***********************/
3575 hw_rev = iwl_hw_detect(priv);
3576 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3577 priv->cfg->name, hw_rev);
3578
3579 if (iwl_prepare_card_hw(priv)) {
3580 err = -EIO;
3581 IWL_WARN(priv, "Failed, HW not ready\n");
3582 goto out_free_traffic_mem;
3583 }
3584
3585 /*****************
3586 * 4. Read EEPROM
3587 *****************/
3588 /* Read the EEPROM */
3589 err = iwl_eeprom_init(priv, hw_rev);
3590 if (err) {
3591 IWL_ERR(priv, "Unable to init EEPROM\n");
3592 goto out_free_traffic_mem;
3593 }
3594 err = iwl_eeprom_check_version(priv);
3595 if (err)
3596 goto out_free_eeprom;
3597
3598 err = iwl_eeprom_check_sku(priv);
3599 if (err)
3600 goto out_free_eeprom;
3601
3602 /* extract MAC Address */
3603 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3604 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3605 priv->hw->wiphy->addresses = priv->addresses;
3606 priv->hw->wiphy->n_addresses = 1;
3607 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3608 if (num_mac > 1) {
3609 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3610 ETH_ALEN);
3611 priv->addresses[1].addr[5]++;
3612 priv->hw->wiphy->n_addresses++;
3613 }
3614
3615 /* initialize all valid contexts */
3616 iwl_init_context(priv);
3617
3618 /************************
3619 * 5. Setup HW constants
3620 ************************/
3621 if (iwl_set_hw_params(priv)) {
3622 err = -ENOENT;
3623 IWL_ERR(priv, "failed to set hw parameters\n");
3624 goto out_free_eeprom;
3625 }
3626
3627 /*******************
3628 * 6. Setup priv
3629 *******************/
3630
3631 err = iwl_init_drv(priv);
3632 if (err)
3633 goto out_free_eeprom;
3634 /* At this point both hw and priv are initialized. */
3635
3636 /********************
3637 * 7. Setup services
3638 ********************/
3639 iwl_setup_deferred_work(priv);
3640 iwl_setup_rx_handlers(priv);
3641 iwl_testmode_init(priv);
3642
3643 /*********************************************
3644 * 8. Enable interrupts
3645 *********************************************/
3646
3647 iwl_enable_rfkill_int(priv);
3648
3649 /* If platform's RF_KILL switch is NOT set to KILL */
3650 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3651 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3652 else
3653 set_bit(STATUS_RF_KILL_HW, &priv->status);
3654
3655 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3656 test_bit(STATUS_RF_KILL_HW, &priv->status));
3657
3658 iwl_power_initialize(priv);
3659 iwl_tt_initialize(priv);
3660
3661 init_completion(&priv->_agn.firmware_loading_complete);
3662
3663 err = iwl_request_firmware(priv, true);
3664 if (err)
3665 goto out_destroy_workqueue;
3666
3667 return 0;
3668
3669 out_destroy_workqueue:
3670 destroy_workqueue(priv->workqueue);
3671 priv->workqueue = NULL;
3672 iwl_uninit_drv(priv);
3673 out_free_eeprom:
3674 iwl_eeprom_free(priv);
3675 out_free_traffic_mem:
3676 iwl_free_traffic_mem(priv);
3677 trans_free(priv);
3678 out_free_priv:
3679 ieee80211_free_hw(priv->hw);
3680 out:
3681 return err;
3682 }
3683
3684 void __devexit iwl_remove(struct iwl_priv * priv)
3685 {
3686 unsigned long flags;
3687
3688 wait_for_completion(&priv->_agn.firmware_loading_complete);
3689
3690 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3691
3692 iwl_dbgfs_unregister(priv);
3693 sysfs_remove_group(&priv->bus.dev->kobj,
3694 &iwl_attribute_group);
3695
3696 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3697 * to be called and iwl_down since we are removing the device
3698 * we need to set STATUS_EXIT_PENDING bit.
3699 */
3700 set_bit(STATUS_EXIT_PENDING, &priv->status);
3701
3702 iwl_testmode_cleanup(priv);
3703 iwl_leds_exit(priv);
3704
3705 if (priv->mac80211_registered) {
3706 ieee80211_unregister_hw(priv->hw);
3707 priv->mac80211_registered = 0;
3708 }
3709
3710 /* Reset to low power before unloading driver. */
3711 iwl_apm_stop(priv);
3712
3713 iwl_tt_exit(priv);
3714
3715 /* make sure we flush any pending irq or
3716 * tasklet for the driver
3717 */
3718 spin_lock_irqsave(&priv->lock, flags);
3719 iwl_disable_interrupts(priv);
3720 spin_unlock_irqrestore(&priv->lock, flags);
3721
3722 trans_sync_irq(priv);
3723
3724 iwl_dealloc_ucode(priv);
3725
3726 trans_rx_free(priv);
3727 trans_tx_free(priv);
3728
3729 iwl_eeprom_free(priv);
3730
3731 /*netif_stop_queue(dev); */
3732 flush_workqueue(priv->workqueue);
3733
3734 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3735 * priv->workqueue... so we can't take down the workqueue
3736 * until now... */
3737 destroy_workqueue(priv->workqueue);
3738 priv->workqueue = NULL;
3739 iwl_free_traffic_mem(priv);
3740
3741 trans_free(priv);
3742
3743 priv->bus.ops->set_drv_data(&priv->bus, NULL);
3744
3745 iwl_uninit_drv(priv);
3746
3747 dev_kfree_skb(priv->beacon_skb);
3748
3749 ieee80211_free_hw(priv->hw);
3750 }
3751
3752
3753 /*****************************************************************************
3754 *
3755 * driver and module entry point
3756 *
3757 *****************************************************************************/
3758 static int __init iwl_init(void)
3759 {
3760
3761 int ret;
3762 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3763 pr_info(DRV_COPYRIGHT "\n");
3764
3765 ret = iwlagn_rate_control_register();
3766 if (ret) {
3767 pr_err("Unable to register rate control algorithm: %d\n", ret);
3768 return ret;
3769 }
3770
3771 ret = iwl_pci_register_driver();
3772
3773 if (ret)
3774 goto error_register;
3775 return ret;
3776
3777 error_register:
3778 iwlagn_rate_control_unregister();
3779 return ret;
3780 }
3781
3782 static void __exit iwl_exit(void)
3783 {
3784 iwl_pci_unregister_driver();
3785 iwlagn_rate_control_unregister();
3786 }
3787
3788 module_exit(iwl_exit);
3789 module_init(iwl_init);
3790
3791 #ifdef CONFIG_IWLWIFI_DEBUG
3792 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3793 MODULE_PARM_DESC(debug, "debug output mask");
3794 #endif
3795
3796 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3797 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3798 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3799 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3800 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3801 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3802 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3803 int, S_IRUGO);
3804 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3805 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3806 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3807
3808 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
3809 S_IRUGO);
3810 MODULE_PARM_DESC(ucode_alternative,
3811 "specify ucode alternative to use from ucode file");
3812
3813 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
3814 MODULE_PARM_DESC(antenna_coupling,
3815 "specify antenna coupling in dB (defualt: 0 dB)");
3816
3817 module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
3818 MODULE_PARM_DESC(bt_ch_inhibition,
3819 "Disable BT channel inhibition (default: enable)");
3820
3821 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3822 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3823
3824 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3825 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3826
3827 module_param_named(wd_disable, iwlagn_mod_params.wd_disable, bool, S_IRUGO);
3828 MODULE_PARM_DESC(wd_disable,
3829 "Disable stuck queue watchdog timer (default: 0 [enabled])");
3830
3831 /*
3832 * set bt_coex_active to true, uCode will do kill/defer
3833 * every time the priority line is asserted (BT is sending signals on the
3834 * priority line in the PCIx).
3835 * set bt_coex_active to false, uCode will ignore the BT activity and
3836 * perform the normal operation
3837 *
3838 * User might experience transmit issue on some platform due to WiFi/BT
3839 * co-exist problem. The possible behaviors are:
3840 * Able to scan and finding all the available AP
3841 * Not able to associate with any AP
3842 * On those platforms, WiFi communication can be restored by set
3843 * "bt_coex_active" module parameter to "false"
3844 *
3845 * default: bt_coex_active = true (BT_COEX_ENABLE)
3846 */
3847 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3848 bool, S_IRUGO);
3849 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3850
3851 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3852 MODULE_PARM_DESC(led_mode, "0=system default, "
3853 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3854
3855 module_param_named(power_save, iwlagn_mod_params.power_save,
3856 bool, S_IRUGO);
3857 MODULE_PARM_DESC(power_save,
3858 "enable WiFi power management (default: disable)");
3859
3860 module_param_named(power_level, iwlagn_mod_params.power_level,
3861 int, S_IRUGO);
3862 MODULE_PARM_DESC(power_level,
3863 "default power save level (range from 1 - 5, default: 1)");
3864
3865 /*
3866 * For now, keep using power level 1 instead of automatically
3867 * adjusting ...
3868 */
3869 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3870 bool, S_IRUGO);
3871 MODULE_PARM_DESC(no_sleep_autoadjust,
3872 "don't automatically adjust sleep level "
3873 "according to maximum network latency (default: true)");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree