?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
iwlagn: don't read the PCI_REVISION_ID from iwl-agn.c
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / net / wireless / iwlwifi / iwl-agn.c
blob1ff8e4b3e960d29d2531f89b7203e49863d0c578
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 /* TODO: remove include to PCI*.h when no PCI will be needed here */
36 #include <linux/pci.h>
37 #include <linux/pci-aspm.h>
38 #include <linux/slab.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/delay.h>
41 #include <linux/sched.h>
42 #include <linux/skbuff.h>
43 #include <linux/netdevice.h>
44 #include <linux/wireless.h>
45 #include <linux/firmware.h>
46 #include <linux/etherdevice.h>
47 #include <linux/if_arp.h>
48
49 #include <net/mac80211.h>
50
51 #include <asm/div64.h>
52
53 #include "iwl-eeprom.h"
54 #include "iwl-dev.h"
55 #include "iwl-core.h"
56 #include "iwl-io.h"
57 #include "iwl-helpers.h"
58 #include "iwl-sta.h"
59 #include "iwl-agn-calib.h"
60 #include "iwl-agn.h"
61 #include "iwl-pci.h"
62
63
64 /******************************************************************************
65 *
66 * module boiler plate
67 *
68 ******************************************************************************/
69
70 /*
71 * module name, copyright, version, etc.
72 */
73 #define DRV_DESCRIPTION "Intel(R) Wireless WiFi Link AGN driver for Linux"
74
75 #ifdef CONFIG_IWLWIFI_DEBUG
76 #define VD "d"
77 #else
78 #define VD
79 #endif
80
81 #define DRV_VERSION IWLWIFI_VERSION VD
82
83
84 MODULE_DESCRIPTION(DRV_DESCRIPTION);
85 MODULE_VERSION(DRV_VERSION);
86 MODULE_AUTHOR(DRV_COPYRIGHT " " DRV_AUTHOR);
87 MODULE_LICENSE("GPL");
88
89 static int iwlagn_ant_coupling;
90 static bool iwlagn_bt_ch_announce = 1;
91
92 void iwl_update_chain_flags(struct iwl_priv *priv)
93 {
94 struct iwl_rxon_context *ctx;
95
96 if (priv->cfg->ops->hcmd->set_rxon_chain) {
97 for_each_context(priv, ctx) {
98 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
99 if (ctx->active.rx_chain != ctx->staging.rx_chain)
100 iwlagn_commit_rxon(priv, ctx);
101 }
102 }
103 }
104
105 /* Parse the beacon frame to find the TIM element and set tim_idx & tim_size */
106 static void iwl_set_beacon_tim(struct iwl_priv *priv,
107 struct iwl_tx_beacon_cmd *tx_beacon_cmd,
108 u8 *beacon, u32 frame_size)
109 {
110 u16 tim_idx;
111 struct ieee80211_mgmt *mgmt = (struct ieee80211_mgmt *)beacon;
112
113 /*
114 * The index is relative to frame start but we start looking at the
115 * variable-length part of the beacon.
116 */
117 tim_idx = mgmt->u.beacon.variable - beacon;
118
119 /* Parse variable-length elements of beacon to find WLAN_EID_TIM */
120 while ((tim_idx < (frame_size - 2)) &&
121 (beacon[tim_idx] != WLAN_EID_TIM))
122 tim_idx += beacon[tim_idx+1] + 2;
123
124 /* If TIM field was found, set variables */
125 if ((tim_idx < (frame_size - 1)) && (beacon[tim_idx] == WLAN_EID_TIM)) {
126 tx_beacon_cmd->tim_idx = cpu_to_le16(tim_idx);
127 tx_beacon_cmd->tim_size = beacon[tim_idx+1];
128 } else
129 IWL_WARN(priv, "Unable to find TIM Element in beacon\n");
130 }
131
132 int iwlagn_send_beacon_cmd(struct iwl_priv *priv)
133 {
134 struct iwl_tx_beacon_cmd *tx_beacon_cmd;
135 struct iwl_host_cmd cmd = {
136 .id = REPLY_TX_BEACON,
137 };
138 u32 frame_size;
139 u32 rate_flags;
140 u32 rate;
141
142 /*
143 * We have to set up the TX command, the TX Beacon command, and the
144 * beacon contents.
145 */
146
147 lockdep_assert_held(&priv->mutex);
148
149 if (!priv->beacon_ctx) {
150 IWL_ERR(priv, "trying to build beacon w/o beacon context!\n");
151 return 0;
152 }
153
154 if (WARN_ON(!priv->beacon_skb))
155 return -EINVAL;
156
157 /* Allocate beacon command */
158 if (!priv->beacon_cmd)
159 priv->beacon_cmd = kzalloc(sizeof(*tx_beacon_cmd), GFP_KERNEL);
160 tx_beacon_cmd = priv->beacon_cmd;
161 if (!tx_beacon_cmd)
162 return -ENOMEM;
163
164 frame_size = priv->beacon_skb->len;
165
166 /* Set up TX command fields */
167 tx_beacon_cmd->tx.len = cpu_to_le16((u16)frame_size);
168 tx_beacon_cmd->tx.sta_id = priv->beacon_ctx->bcast_sta_id;
169 tx_beacon_cmd->tx.stop_time.life_time = TX_CMD_LIFE_TIME_INFINITE;
170 tx_beacon_cmd->tx.tx_flags = TX_CMD_FLG_SEQ_CTL_MSK |
171 TX_CMD_FLG_TSF_MSK | TX_CMD_FLG_STA_RATE_MSK;
172
173 /* Set up TX beacon command fields */
174 iwl_set_beacon_tim(priv, tx_beacon_cmd, priv->beacon_skb->data,
175 frame_size);
176
177 /* Set up packet rate and flags */
178 rate = iwl_rate_get_lowest_plcp(priv, priv->beacon_ctx);
179 priv->mgmt_tx_ant = iwl_toggle_tx_ant(priv, priv->mgmt_tx_ant,
180 priv->hw_params.valid_tx_ant);
181 rate_flags = iwl_ant_idx_to_flags(priv->mgmt_tx_ant);
182 if ((rate >= IWL_FIRST_CCK_RATE) && (rate <= IWL_LAST_CCK_RATE))
183 rate_flags |= RATE_MCS_CCK_MSK;
184 tx_beacon_cmd->tx.rate_n_flags = iwl_hw_set_rate_n_flags(rate,
185 rate_flags);
186
187 /* Submit command */
188 cmd.len[0] = sizeof(*tx_beacon_cmd);
189 cmd.data[0] = tx_beacon_cmd;
190 cmd.dataflags[0] = IWL_HCMD_DFL_NOCOPY;
191 cmd.len[1] = frame_size;
192 cmd.data[1] = priv->beacon_skb->data;
193 cmd.dataflags[1] = IWL_HCMD_DFL_NOCOPY;
194
195 return iwl_send_cmd_sync(priv, &cmd);
196 }
197
198 static void iwl_bg_beacon_update(struct work_struct *work)
199 {
200 struct iwl_priv *priv =
201 container_of(work, struct iwl_priv, beacon_update);
202 struct sk_buff *beacon;
203
204 mutex_lock(&priv->mutex);
205 if (!priv->beacon_ctx) {
206 IWL_ERR(priv, "updating beacon w/o beacon context!\n");
207 goto out;
208 }
209
210 if (priv->beacon_ctx->vif->type != NL80211_IFTYPE_AP) {
211 /*
212 * The ucode will send beacon notifications even in
213 * IBSS mode, but we don't want to process them. But
214 * we need to defer the type check to here due to
215 * requiring locking around the beacon_ctx access.
216 */
217 goto out;
218 }
219
220 /* Pull updated AP beacon from mac80211. will fail if not in AP mode */
221 beacon = ieee80211_beacon_get(priv->hw, priv->beacon_ctx->vif);
222 if (!beacon) {
223 IWL_ERR(priv, "update beacon failed -- keeping old\n");
224 goto out;
225 }
226
227 /* new beacon skb is allocated every time; dispose previous.*/
228 dev_kfree_skb(priv->beacon_skb);
229
230 priv->beacon_skb = beacon;
231
232 iwlagn_send_beacon_cmd(priv);
233 out:
234 mutex_unlock(&priv->mutex);
235 }
236
237 static void iwl_bg_bt_runtime_config(struct work_struct *work)
238 {
239 struct iwl_priv *priv =
240 container_of(work, struct iwl_priv, bt_runtime_config);
241
242 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
243 return;
244
245 /* dont send host command if rf-kill is on */
246 if (!iwl_is_ready_rf(priv))
247 return;
248 priv->cfg->ops->hcmd->send_bt_config(priv);
249 }
250
251 static void iwl_bg_bt_full_concurrency(struct work_struct *work)
252 {
253 struct iwl_priv *priv =
254 container_of(work, struct iwl_priv, bt_full_concurrency);
255 struct iwl_rxon_context *ctx;
256
257 mutex_lock(&priv->mutex);
258
259 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
260 goto out;
261
262 /* dont send host command if rf-kill is on */
263 if (!iwl_is_ready_rf(priv))
264 goto out;
265
266 IWL_DEBUG_INFO(priv, "BT coex in %s mode\n",
267 priv->bt_full_concurrent ?
268 "full concurrency" : "3-wire");
269
270 /*
271 * LQ & RXON updated cmds must be sent before BT Config cmd
272 * to avoid 3-wire collisions
273 */
274 for_each_context(priv, ctx) {
275 if (priv->cfg->ops->hcmd->set_rxon_chain)
276 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
277 iwlagn_commit_rxon(priv, ctx);
278 }
279
280 priv->cfg->ops->hcmd->send_bt_config(priv);
281 out:
282 mutex_unlock(&priv->mutex);
283 }
284
285 /**
286 * iwl_bg_statistics_periodic - Timer callback to queue statistics
287 *
288 * This callback is provided in order to send a statistics request.
289 *
290 * This timer function is continually reset to execute within
291 * REG_RECALIB_PERIOD seconds since the last STATISTICS_NOTIFICATION
292 * was received. We need to ensure we receive the statistics in order
293 * to update the temperature used for calibrating the TXPOWER.
294 */
295 static void iwl_bg_statistics_periodic(unsigned long data)
296 {
297 struct iwl_priv *priv = (struct iwl_priv *)data;
298
299 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
300 return;
301
302 /* dont send host command if rf-kill is on */
303 if (!iwl_is_ready_rf(priv))
304 return;
305
306 iwl_send_statistics_request(priv, CMD_ASYNC, false);
307 }
308
309
310 static void iwl_print_cont_event_trace(struct iwl_priv *priv, u32 base,
311 u32 start_idx, u32 num_events,
312 u32 mode)
313 {
314 u32 i;
315 u32 ptr; /* SRAM byte address of log data */
316 u32 ev, time, data; /* event log data */
317 unsigned long reg_flags;
318
319 if (mode == 0)
320 ptr = base + (4 * sizeof(u32)) + (start_idx * 2 * sizeof(u32));
321 else
322 ptr = base + (4 * sizeof(u32)) + (start_idx * 3 * sizeof(u32));
323
324 /* Make sure device is powered up for SRAM reads */
325 spin_lock_irqsave(&priv->reg_lock, reg_flags);
326 if (iwl_grab_nic_access(priv)) {
327 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
328 return;
329 }
330
331 /* Set starting address; reads will auto-increment */
332 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
333 rmb();
334
335 /*
336 * "time" is actually "data" for mode 0 (no timestamp).
337 * place event id # at far right for easier visual parsing.
338 */
339 for (i = 0; i < num_events; i++) {
340 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
341 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
342 if (mode == 0) {
343 trace_iwlwifi_dev_ucode_cont_event(priv,
344 0, time, ev);
345 } else {
346 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
347 trace_iwlwifi_dev_ucode_cont_event(priv,
348 time, data, ev);
349 }
350 }
351 /* Allow device to power down */
352 iwl_release_nic_access(priv);
353 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
354 }
355
356 static void iwl_continuous_event_trace(struct iwl_priv *priv)
357 {
358 u32 capacity; /* event log capacity in # entries */
359 u32 base; /* SRAM byte address of event log header */
360 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
361 u32 num_wraps; /* # times uCode wrapped to top of log */
362 u32 next_entry; /* index of next entry to be written by uCode */
363
364 base = priv->device_pointers.error_event_table;
365 if (priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
366 capacity = iwl_read_targ_mem(priv, base);
367 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
368 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
369 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
370 } else
371 return;
372
373 if (num_wraps == priv->event_log.num_wraps) {
374 iwl_print_cont_event_trace(priv,
375 base, priv->event_log.next_entry,
376 next_entry - priv->event_log.next_entry,
377 mode);
378 priv->event_log.non_wraps_count++;
379 } else {
380 if ((num_wraps - priv->event_log.num_wraps) > 1)
381 priv->event_log.wraps_more_count++;
382 else
383 priv->event_log.wraps_once_count++;
384 trace_iwlwifi_dev_ucode_wrap_event(priv,
385 num_wraps - priv->event_log.num_wraps,
386 next_entry, priv->event_log.next_entry);
387 if (next_entry < priv->event_log.next_entry) {
388 iwl_print_cont_event_trace(priv, base,
389 priv->event_log.next_entry,
390 capacity - priv->event_log.next_entry,
391 mode);
392
393 iwl_print_cont_event_trace(priv, base, 0,
394 next_entry, mode);
395 } else {
396 iwl_print_cont_event_trace(priv, base,
397 next_entry, capacity - next_entry,
398 mode);
399
400 iwl_print_cont_event_trace(priv, base, 0,
401 next_entry, mode);
402 }
403 }
404 priv->event_log.num_wraps = num_wraps;
405 priv->event_log.next_entry = next_entry;
406 }
407
408 /**
409 * iwl_bg_ucode_trace - Timer callback to log ucode event
410 *
411 * The timer is continually set to execute every
412 * UCODE_TRACE_PERIOD milliseconds after the last timer expired
413 * this function is to perform continuous uCode event logging operation
414 * if enabled
415 */
416 static void iwl_bg_ucode_trace(unsigned long data)
417 {
418 struct iwl_priv *priv = (struct iwl_priv *)data;
419
420 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
421 return;
422
423 if (priv->event_log.ucode_trace) {
424 iwl_continuous_event_trace(priv);
425 /* Reschedule the timer to occur in UCODE_TRACE_PERIOD */
426 mod_timer(&priv->ucode_trace,
427 jiffies + msecs_to_jiffies(UCODE_TRACE_PERIOD));
428 }
429 }
430
431 static void iwl_bg_tx_flush(struct work_struct *work)
432 {
433 struct iwl_priv *priv =
434 container_of(work, struct iwl_priv, tx_flush);
435
436 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
437 return;
438
439 /* do nothing if rf-kill is on */
440 if (!iwl_is_ready_rf(priv))
441 return;
442
443 IWL_DEBUG_INFO(priv, "device request: flush all tx frames\n");
444 iwlagn_dev_txfifo_flush(priv, IWL_DROP_ALL);
445 }
446
447 /**
448 * iwl_rx_handle - Main entry function for receiving responses from uCode
449 *
450 * Uses the priv->rx_handlers callback function array to invoke
451 * the appropriate handlers, including command responses,
452 * frame-received notifications, and other notifications.
453 */
454 static void iwl_rx_handle(struct iwl_priv *priv)
455 {
456 struct iwl_rx_mem_buffer *rxb;
457 struct iwl_rx_packet *pkt;
458 struct iwl_rx_queue *rxq = &priv->rxq;
459 u32 r, i;
460 int reclaim;
461 unsigned long flags;
462 u8 fill_rx = 0;
463 u32 count = 8;
464 int total_empty;
465
466 /* uCode's read index (stored in shared DRAM) indicates the last Rx
467 * buffer that the driver may process (last buffer filled by ucode). */
468 r = le16_to_cpu(rxq->rb_stts->closed_rb_num) & 0x0FFF;
469 i = rxq->read;
470
471 /* Rx interrupt, but nothing sent from uCode */
472 if (i == r)
473 IWL_DEBUG_RX(priv, "r = %d, i = %d\n", r, i);
474
475 /* calculate total frames need to be restock after handling RX */
476 total_empty = r - rxq->write_actual;
477 if (total_empty < 0)
478 total_empty += RX_QUEUE_SIZE;
479
480 if (total_empty > (RX_QUEUE_SIZE / 2))
481 fill_rx = 1;
482
483 while (i != r) {
484 int len;
485
486 rxb = rxq->queue[i];
487
488 /* If an RXB doesn't have a Rx queue slot associated with it,
489 * then a bug has been introduced in the queue refilling
490 * routines -- catch it here */
491 if (WARN_ON(rxb == NULL)) {
492 i = (i + 1) & RX_QUEUE_MASK;
493 continue;
494 }
495
496 rxq->queue[i] = NULL;
497
498 dma_unmap_page(priv->bus.dev, rxb->page_dma,
499 PAGE_SIZE << priv->hw_params.rx_page_order,
500 DMA_FROM_DEVICE);
501 pkt = rxb_addr(rxb);
502
503 len = le32_to_cpu(pkt->len_n_flags) & FH_RSCSR_FRAME_SIZE_MSK;
504 len += sizeof(u32); /* account for status word */
505 trace_iwlwifi_dev_rx(priv, pkt, len);
506
507 /* Reclaim a command buffer only if this packet is a response
508 * to a (driver-originated) command.
509 * If the packet (e.g. Rx frame) originated from uCode,
510 * there is no command buffer to reclaim.
511 * Ucode should set SEQ_RX_FRAME bit if ucode-originated,
512 * but apparently a few don't get set; catch them here. */
513 reclaim = !(pkt->hdr.sequence & SEQ_RX_FRAME) &&
514 (pkt->hdr.cmd != REPLY_RX_PHY_CMD) &&
515 (pkt->hdr.cmd != REPLY_RX) &&
516 (pkt->hdr.cmd != REPLY_RX_MPDU_CMD) &&
517 (pkt->hdr.cmd != REPLY_COMPRESSED_BA) &&
518 (pkt->hdr.cmd != STATISTICS_NOTIFICATION) &&
519 (pkt->hdr.cmd != REPLY_TX);
520
521 /*
522 * Do the notification wait before RX handlers so
523 * even if the RX handler consumes the RXB we have
524 * access to it in the notification wait entry.
525 */
526 if (!list_empty(&priv->_agn.notif_waits)) {
527 struct iwl_notification_wait *w;
528
529 spin_lock(&priv->_agn.notif_wait_lock);
530 list_for_each_entry(w, &priv->_agn.notif_waits, list) {
531 if (w->cmd == pkt->hdr.cmd) {
532 w->triggered = true;
533 if (w->fn)
534 w->fn(priv, pkt, w->fn_data);
535 }
536 }
537 spin_unlock(&priv->_agn.notif_wait_lock);
538
539 wake_up_all(&priv->_agn.notif_waitq);
540 }
541 if (priv->pre_rx_handler)
542 priv->pre_rx_handler(priv, rxb);
543
544 /* Based on type of command response or notification,
545 * handle those that need handling via function in
546 * rx_handlers table. See iwl_setup_rx_handlers() */
547 if (priv->rx_handlers[pkt->hdr.cmd]) {
548 IWL_DEBUG_RX(priv, "r = %d, i = %d, %s, 0x%02x\n", r,
549 i, get_cmd_string(pkt->hdr.cmd), pkt->hdr.cmd);
550 priv->isr_stats.rx_handlers[pkt->hdr.cmd]++;
551 priv->rx_handlers[pkt->hdr.cmd] (priv, rxb);
552 } else {
553 /* No handling needed */
554 IWL_DEBUG_RX(priv,
555 "r %d i %d No handler needed for %s, 0x%02x\n",
556 r, i, get_cmd_string(pkt->hdr.cmd),
557 pkt->hdr.cmd);
558 }
559
560 /*
561 * XXX: After here, we should always check rxb->page
562 * against NULL before touching it or its virtual
563 * memory (pkt). Because some rx_handler might have
564 * already taken or freed the pages.
565 */
566
567 if (reclaim) {
568 /* Invoke any callbacks, transfer the buffer to caller,
569 * and fire off the (possibly) blocking iwl_send_cmd()
570 * as we reclaim the driver command queue */
571 if (rxb->page)
572 iwl_tx_cmd_complete(priv, rxb);
573 else
574 IWL_WARN(priv, "Claim null rxb?\n");
575 }
576
577 /* Reuse the page if possible. For notification packets and
578 * SKBs that fail to Rx correctly, add them back into the
579 * rx_free list for reuse later. */
580 spin_lock_irqsave(&rxq->lock, flags);
581 if (rxb->page != NULL) {
582 rxb->page_dma = dma_map_page(priv->bus.dev, rxb->page,
583 0, PAGE_SIZE << priv->hw_params.rx_page_order,
584 DMA_FROM_DEVICE);
585 list_add_tail(&rxb->list, &rxq->rx_free);
586 rxq->free_count++;
587 } else
588 list_add_tail(&rxb->list, &rxq->rx_used);
589
590 spin_unlock_irqrestore(&rxq->lock, flags);
591
592 i = (i + 1) & RX_QUEUE_MASK;
593 /* If there are a lot of unused frames,
594 * restock the Rx queue so ucode wont assert. */
595 if (fill_rx) {
596 count++;
597 if (count >= 8) {
598 rxq->read = i;
599 iwlagn_rx_replenish_now(priv);
600 count = 0;
601 }
602 }
603 }
604
605 /* Backtrack one entry */
606 rxq->read = i;
607 if (fill_rx)
608 iwlagn_rx_replenish_now(priv);
609 else
610 iwlagn_rx_queue_restock(priv);
611 }
612
613 /* tasklet for iwlagn interrupt */
614 static void iwl_irq_tasklet(struct iwl_priv *priv)
615 {
616 u32 inta = 0;
617 u32 handled = 0;
618 unsigned long flags;
619 u32 i;
620 #ifdef CONFIG_IWLWIFI_DEBUG
621 u32 inta_mask;
622 #endif
623
624 spin_lock_irqsave(&priv->lock, flags);
625
626 /* Ack/clear/reset pending uCode interrupts.
627 * Note: Some bits in CSR_INT are "OR" of bits in CSR_FH_INT_STATUS,
628 */
629 /* There is a hardware bug in the interrupt mask function that some
630 * interrupts (i.e. CSR_INT_BIT_SCD) can still be generated even if
631 * they are disabled in the CSR_INT_MASK register. Furthermore the
632 * ICT interrupt handling mechanism has another bug that might cause
633 * these unmasked interrupts fail to be detected. We workaround the
634 * hardware bugs here by ACKing all the possible interrupts so that
635 * interrupt coalescing can still be achieved.
636 */
637 iwl_write32(priv, CSR_INT, priv->_agn.inta | ~priv->inta_mask);
638
639 inta = priv->_agn.inta;
640
641 #ifdef CONFIG_IWLWIFI_DEBUG
642 if (iwl_get_debug_level(priv) & IWL_DL_ISR) {
643 /* just for debug */
644 inta_mask = iwl_read32(priv, CSR_INT_MASK);
645 IWL_DEBUG_ISR(priv, "inta 0x%08x, enabled 0x%08x\n ",
646 inta, inta_mask);
647 }
648 #endif
649
650 spin_unlock_irqrestore(&priv->lock, flags);
651
652 /* saved interrupt in inta variable now we can reset priv->_agn.inta */
653 priv->_agn.inta = 0;
654
655 /* Now service all interrupt bits discovered above. */
656 if (inta & CSR_INT_BIT_HW_ERR) {
657 IWL_ERR(priv, "Hardware error detected. Restarting.\n");
658
659 /* Tell the device to stop sending interrupts */
660 iwl_disable_interrupts(priv);
661
662 priv->isr_stats.hw++;
663 iwl_irq_handle_error(priv);
664
665 handled |= CSR_INT_BIT_HW_ERR;
666
667 return;
668 }
669
670 #ifdef CONFIG_IWLWIFI_DEBUG
671 if (iwl_get_debug_level(priv) & (IWL_DL_ISR)) {
672 /* NIC fires this, but we don't use it, redundant with WAKEUP */
673 if (inta & CSR_INT_BIT_SCD) {
674 IWL_DEBUG_ISR(priv, "Scheduler finished to transmit "
675 "the frame/frames.\n");
676 priv->isr_stats.sch++;
677 }
678
679 /* Alive notification via Rx interrupt will do the real work */
680 if (inta & CSR_INT_BIT_ALIVE) {
681 IWL_DEBUG_ISR(priv, "Alive interrupt\n");
682 priv->isr_stats.alive++;
683 }
684 }
685 #endif
686 /* Safely ignore these bits for debug checks below */
687 inta &= ~(CSR_INT_BIT_SCD | CSR_INT_BIT_ALIVE);
688
689 /* HW RF KILL switch toggled */
690 if (inta & CSR_INT_BIT_RF_KILL) {
691 int hw_rf_kill = 0;
692 if (!(iwl_read32(priv, CSR_GP_CNTRL) &
693 CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW))
694 hw_rf_kill = 1;
695
696 IWL_WARN(priv, "RF_KILL bit toggled to %s.\n",
697 hw_rf_kill ? "disable radio" : "enable radio");
698
699 priv->isr_stats.rfkill++;
700
701 /* driver only loads ucode once setting the interface up.
702 * the driver allows loading the ucode even if the radio
703 * is killed. Hence update the killswitch state here. The
704 * rfkill handler will care about restarting if needed.
705 */
706 if (!test_bit(STATUS_ALIVE, &priv->status)) {
707 if (hw_rf_kill)
708 set_bit(STATUS_RF_KILL_HW, &priv->status);
709 else
710 clear_bit(STATUS_RF_KILL_HW, &priv->status);
711 wiphy_rfkill_set_hw_state(priv->hw->wiphy, hw_rf_kill);
712 }
713
714 handled |= CSR_INT_BIT_RF_KILL;
715 }
716
717 /* Chip got too hot and stopped itself */
718 if (inta & CSR_INT_BIT_CT_KILL) {
719 IWL_ERR(priv, "Microcode CT kill error detected.\n");
720 priv->isr_stats.ctkill++;
721 handled |= CSR_INT_BIT_CT_KILL;
722 }
723
724 /* Error detected by uCode */
725 if (inta & CSR_INT_BIT_SW_ERR) {
726 IWL_ERR(priv, "Microcode SW error detected. "
727 " Restarting 0x%X.\n", inta);
728 priv->isr_stats.sw++;
729 iwl_irq_handle_error(priv);
730 handled |= CSR_INT_BIT_SW_ERR;
731 }
732
733 /* uCode wakes up after power-down sleep */
734 if (inta & CSR_INT_BIT_WAKEUP) {
735 IWL_DEBUG_ISR(priv, "Wakeup interrupt\n");
736 iwl_rx_queue_update_write_ptr(priv, &priv->rxq);
737 for (i = 0; i < priv->hw_params.max_txq_num; i++)
738 iwl_txq_update_write_ptr(priv, &priv->txq[i]);
739
740 priv->isr_stats.wakeup++;
741
742 handled |= CSR_INT_BIT_WAKEUP;
743 }
744
745 /* All uCode command responses, including Tx command responses,
746 * Rx "responses" (frame-received notification), and other
747 * notifications from uCode come through here*/
748 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX |
749 CSR_INT_BIT_RX_PERIODIC)) {
750 IWL_DEBUG_ISR(priv, "Rx interrupt\n");
751 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX)) {
752 handled |= (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX);
753 iwl_write32(priv, CSR_FH_INT_STATUS,
754 CSR_FH_INT_RX_MASK);
755 }
756 if (inta & CSR_INT_BIT_RX_PERIODIC) {
757 handled |= CSR_INT_BIT_RX_PERIODIC;
758 iwl_write32(priv, CSR_INT, CSR_INT_BIT_RX_PERIODIC);
759 }
760 /* Sending RX interrupt require many steps to be done in the
761 * the device:
762 * 1- write interrupt to current index in ICT table.
763 * 2- dma RX frame.
764 * 3- update RX shared data to indicate last write index.
765 * 4- send interrupt.
766 * This could lead to RX race, driver could receive RX interrupt
767 * but the shared data changes does not reflect this;
768 * periodic interrupt will detect any dangling Rx activity.
769 */
770
771 /* Disable periodic interrupt; we use it as just a one-shot. */
772 iwl_write8(priv, CSR_INT_PERIODIC_REG,
773 CSR_INT_PERIODIC_DIS);
774 iwl_rx_handle(priv);
775
776 /*
777 * Enable periodic interrupt in 8 msec only if we received
778 * real RX interrupt (instead of just periodic int), to catch
779 * any dangling Rx interrupt. If it was just the periodic
780 * interrupt, there was no dangling Rx activity, and no need
781 * to extend the periodic interrupt; one-shot is enough.
782 */
783 if (inta & (CSR_INT_BIT_FH_RX | CSR_INT_BIT_SW_RX))
784 iwl_write8(priv, CSR_INT_PERIODIC_REG,
785 CSR_INT_PERIODIC_ENA);
786
787 priv->isr_stats.rx++;
788 }
789
790 /* This "Tx" DMA channel is used only for loading uCode */
791 if (inta & CSR_INT_BIT_FH_TX) {
792 iwl_write32(priv, CSR_FH_INT_STATUS, CSR_FH_INT_TX_MASK);
793 IWL_DEBUG_ISR(priv, "uCode load interrupt\n");
794 priv->isr_stats.tx++;
795 handled |= CSR_INT_BIT_FH_TX;
796 /* Wake up uCode load routine, now that load is complete */
797 priv->ucode_write_complete = 1;
798 wake_up_interruptible(&priv->wait_command_queue);
799 }
800
801 if (inta & ~handled) {
802 IWL_ERR(priv, "Unhandled INTA bits 0x%08x\n", inta & ~handled);
803 priv->isr_stats.unhandled++;
804 }
805
806 if (inta & ~(priv->inta_mask)) {
807 IWL_WARN(priv, "Disabled INTA bits 0x%08x were pending\n",
808 inta & ~priv->inta_mask);
809 }
810
811 /* Re-enable all interrupts */
812 /* only Re-enable if disabled by irq */
813 if (test_bit(STATUS_INT_ENABLED, &priv->status))
814 iwl_enable_interrupts(priv);
815 /* Re-enable RF_KILL if it occurred */
816 else if (handled & CSR_INT_BIT_RF_KILL)
817 iwl_enable_rfkill_int(priv);
818 }
819
820 /*****************************************************************************
821 *
822 * sysfs attributes
823 *
824 *****************************************************************************/
825
826 #ifdef CONFIG_IWLWIFI_DEBUG
827
828 /*
829 * The following adds a new attribute to the sysfs representation
830 * of this device driver (i.e. a new file in /sys/class/net/wlan0/device/)
831 * used for controlling the debug level.
832 *
833 * See the level definitions in iwl for details.
834 *
835 * The debug_level being managed using sysfs below is a per device debug
836 * level that is used instead of the global debug level if it (the per
837 * device debug level) is set.
838 */
839 static ssize_t show_debug_level(struct device *d,
840 struct device_attribute *attr, char *buf)
841 {
842 struct iwl_priv *priv = dev_get_drvdata(d);
843 return sprintf(buf, "0x%08X\n", iwl_get_debug_level(priv));
844 }
845 static ssize_t store_debug_level(struct device *d,
846 struct device_attribute *attr,
847 const char *buf, size_t count)
848 {
849 struct iwl_priv *priv = dev_get_drvdata(d);
850 unsigned long val;
851 int ret;
852
853 ret = strict_strtoul(buf, 0, &val);
854 if (ret)
855 IWL_ERR(priv, "%s is not in hex or decimal form.\n", buf);
856 else {
857 priv->debug_level = val;
858 if (iwl_alloc_traffic_mem(priv))
859 IWL_ERR(priv,
860 "Not enough memory to generate traffic log\n");
861 }
862 return strnlen(buf, count);
863 }
864
865 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
866 show_debug_level, store_debug_level);
867
868
869 #endif /* CONFIG_IWLWIFI_DEBUG */
870
871
872 static ssize_t show_temperature(struct device *d,
873 struct device_attribute *attr, char *buf)
874 {
875 struct iwl_priv *priv = dev_get_drvdata(d);
876
877 if (!iwl_is_alive(priv))
878 return -EAGAIN;
879
880 return sprintf(buf, "%d\n", priv->temperature);
881 }
882
883 static DEVICE_ATTR(temperature, S_IRUGO, show_temperature, NULL);
884
885 static ssize_t show_tx_power(struct device *d,
886 struct device_attribute *attr, char *buf)
887 {
888 struct iwl_priv *priv = dev_get_drvdata(d);
889
890 if (!iwl_is_ready_rf(priv))
891 return sprintf(buf, "off\n");
892 else
893 return sprintf(buf, "%d\n", priv->tx_power_user_lmt);
894 }
895
896 static ssize_t store_tx_power(struct device *d,
897 struct device_attribute *attr,
898 const char *buf, size_t count)
899 {
900 struct iwl_priv *priv = dev_get_drvdata(d);
901 unsigned long val;
902 int ret;
903
904 ret = strict_strtoul(buf, 10, &val);
905 if (ret)
906 IWL_INFO(priv, "%s is not in decimal form.\n", buf);
907 else {
908 ret = iwl_set_tx_power(priv, val, false);
909 if (ret)
910 IWL_ERR(priv, "failed setting tx power (0x%d).\n",
911 ret);
912 else
913 ret = count;
914 }
915 return ret;
916 }
917
918 static DEVICE_ATTR(tx_power, S_IWUSR | S_IRUGO, show_tx_power, store_tx_power);
919
920 static struct attribute *iwl_sysfs_entries[] = {
921 &dev_attr_temperature.attr,
922 &dev_attr_tx_power.attr,
923 #ifdef CONFIG_IWLWIFI_DEBUG
924 &dev_attr_debug_level.attr,
925 #endif
926 NULL
927 };
928
929 static struct attribute_group iwl_attribute_group = {
930 .name = NULL, /* put in device directory */
931 .attrs = iwl_sysfs_entries,
932 };
933
934 /******************************************************************************
935 *
936 * uCode download functions
937 *
938 ******************************************************************************/
939
940 static void iwl_free_fw_desc(struct iwl_priv *priv, struct fw_desc *desc)
941 {
942 if (desc->v_addr)
943 dma_free_coherent(priv->bus.dev, desc->len,
944 desc->v_addr, desc->p_addr);
945 desc->v_addr = NULL;
946 desc->len = 0;
947 }
948
949 static void iwl_free_fw_img(struct iwl_priv *priv, struct fw_img *img)
950 {
951 iwl_free_fw_desc(priv, &img->code);
952 iwl_free_fw_desc(priv, &img->data);
953 }
954
955 static void iwl_dealloc_ucode(struct iwl_priv *priv)
956 {
957 iwl_free_fw_img(priv, &priv->ucode_rt);
958 iwl_free_fw_img(priv, &priv->ucode_init);
959 }
960
961 static int iwl_alloc_fw_desc(struct iwl_priv *priv, struct fw_desc *desc,
962 const void *data, size_t len)
963 {
964 if (!len) {
965 desc->v_addr = NULL;
966 return -EINVAL;
967 }
968
969 desc->v_addr = dma_alloc_coherent(priv->bus.dev, len,
970 &desc->p_addr, GFP_KERNEL);
971 if (!desc->v_addr)
972 return -ENOMEM;
973
974 desc->len = len;
975 memcpy(desc->v_addr, data, len);
976 return 0;
977 }
978
979 struct iwlagn_ucode_capabilities {
980 u32 max_probe_length;
981 u32 standard_phy_calibration_size;
982 u32 flags;
983 };
984
985 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context);
986 static int iwl_mac_setup_register(struct iwl_priv *priv,
987 struct iwlagn_ucode_capabilities *capa);
988
989 #define UCODE_EXPERIMENTAL_INDEX 100
990 #define UCODE_EXPERIMENTAL_TAG "exp"
991
992 static int __must_check iwl_request_firmware(struct iwl_priv *priv, bool first)
993 {
994 const char *name_pre = priv->cfg->fw_name_pre;
995 char tag[8];
996
997 if (first) {
998 #ifdef CONFIG_IWLWIFI_DEBUG_EXPERIMENTAL_UCODE
999 priv->fw_index = UCODE_EXPERIMENTAL_INDEX;
1000 strcpy(tag, UCODE_EXPERIMENTAL_TAG);
1001 } else if (priv->fw_index == UCODE_EXPERIMENTAL_INDEX) {
1002 #endif
1003 priv->fw_index = priv->cfg->ucode_api_max;
1004 sprintf(tag, "%d", priv->fw_index);
1005 } else {
1006 priv->fw_index--;
1007 sprintf(tag, "%d", priv->fw_index);
1008 }
1009
1010 if (priv->fw_index < priv->cfg->ucode_api_min) {
1011 IWL_ERR(priv, "no suitable firmware found!\n");
1012 return -ENOENT;
1013 }
1014
1015 sprintf(priv->firmware_name, "%s%s%s", name_pre, tag, ".ucode");
1016
1017 IWL_DEBUG_INFO(priv, "attempting to load firmware %s'%s'\n",
1018 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1019 ? "EXPERIMENTAL " : "",
1020 priv->firmware_name);
1021
1022 return request_firmware_nowait(THIS_MODULE, 1, priv->firmware_name,
1023 priv->bus.dev,
1024 GFP_KERNEL, priv, iwl_ucode_callback);
1025 }
1026
1027 struct iwlagn_firmware_pieces {
1028 const void *inst, *data, *init, *init_data;
1029 size_t inst_size, data_size, init_size, init_data_size;
1030
1031 u32 build;
1032
1033 u32 init_evtlog_ptr, init_evtlog_size, init_errlog_ptr;
1034 u32 inst_evtlog_ptr, inst_evtlog_size, inst_errlog_ptr;
1035 };
1036
1037 static int iwlagn_load_legacy_firmware(struct iwl_priv *priv,
1038 const struct firmware *ucode_raw,
1039 struct iwlagn_firmware_pieces *pieces)
1040 {
1041 struct iwl_ucode_header *ucode = (void *)ucode_raw->data;
1042 u32 api_ver, hdr_size;
1043 const u8 *src;
1044
1045 priv->ucode_ver = le32_to_cpu(ucode->ver);
1046 api_ver = IWL_UCODE_API(priv->ucode_ver);
1047
1048 switch (api_ver) {
1049 default:
1050 hdr_size = 28;
1051 if (ucode_raw->size < hdr_size) {
1052 IWL_ERR(priv, "File size too small!\n");
1053 return -EINVAL;
1054 }
1055 pieces->build = le32_to_cpu(ucode->u.v2.build);
1056 pieces->inst_size = le32_to_cpu(ucode->u.v2.inst_size);
1057 pieces->data_size = le32_to_cpu(ucode->u.v2.data_size);
1058 pieces->init_size = le32_to_cpu(ucode->u.v2.init_size);
1059 pieces->init_data_size = le32_to_cpu(ucode->u.v2.init_data_size);
1060 src = ucode->u.v2.data;
1061 break;
1062 case 0:
1063 case 1:
1064 case 2:
1065 hdr_size = 24;
1066 if (ucode_raw->size < hdr_size) {
1067 IWL_ERR(priv, "File size too small!\n");
1068 return -EINVAL;
1069 }
1070 pieces->build = 0;
1071 pieces->inst_size = le32_to_cpu(ucode->u.v1.inst_size);
1072 pieces->data_size = le32_to_cpu(ucode->u.v1.data_size);
1073 pieces->init_size = le32_to_cpu(ucode->u.v1.init_size);
1074 pieces->init_data_size = le32_to_cpu(ucode->u.v1.init_data_size);
1075 src = ucode->u.v1.data;
1076 break;
1077 }
1078
1079 /* Verify size of file vs. image size info in file's header */
1080 if (ucode_raw->size != hdr_size + pieces->inst_size +
1081 pieces->data_size + pieces->init_size +
1082 pieces->init_data_size) {
1083
1084 IWL_ERR(priv,
1085 "uCode file size %d does not match expected size\n",
1086 (int)ucode_raw->size);
1087 return -EINVAL;
1088 }
1089
1090 pieces->inst = src;
1091 src += pieces->inst_size;
1092 pieces->data = src;
1093 src += pieces->data_size;
1094 pieces->init = src;
1095 src += pieces->init_size;
1096 pieces->init_data = src;
1097 src += pieces->init_data_size;
1098
1099 return 0;
1100 }
1101
1102 static int iwlagn_wanted_ucode_alternative = 1;
1103
1104 static int iwlagn_load_firmware(struct iwl_priv *priv,
1105 const struct firmware *ucode_raw,
1106 struct iwlagn_firmware_pieces *pieces,
1107 struct iwlagn_ucode_capabilities *capa)
1108 {
1109 struct iwl_tlv_ucode_header *ucode = (void *)ucode_raw->data;
1110 struct iwl_ucode_tlv *tlv;
1111 size_t len = ucode_raw->size;
1112 const u8 *data;
1113 int wanted_alternative = iwlagn_wanted_ucode_alternative, tmp;
1114 u64 alternatives;
1115 u32 tlv_len;
1116 enum iwl_ucode_tlv_type tlv_type;
1117 const u8 *tlv_data;
1118
1119 if (len < sizeof(*ucode)) {
1120 IWL_ERR(priv, "uCode has invalid length: %zd\n", len);
1121 return -EINVAL;
1122 }
1123
1124 if (ucode->magic != cpu_to_le32(IWL_TLV_UCODE_MAGIC)) {
1125 IWL_ERR(priv, "invalid uCode magic: 0X%x\n",
1126 le32_to_cpu(ucode->magic));
1127 return -EINVAL;
1128 }
1129
1130 /*
1131 * Check which alternatives are present, and "downgrade"
1132 * when the chosen alternative is not present, warning
1133 * the user when that happens. Some files may not have
1134 * any alternatives, so don't warn in that case.
1135 */
1136 alternatives = le64_to_cpu(ucode->alternatives);
1137 tmp = wanted_alternative;
1138 if (wanted_alternative > 63)
1139 wanted_alternative = 63;
1140 while (wanted_alternative && !(alternatives & BIT(wanted_alternative)))
1141 wanted_alternative--;
1142 if (wanted_alternative && wanted_alternative != tmp)
1143 IWL_WARN(priv,
1144 "uCode alternative %d not available, choosing %d\n",
1145 tmp, wanted_alternative);
1146
1147 priv->ucode_ver = le32_to_cpu(ucode->ver);
1148 pieces->build = le32_to_cpu(ucode->build);
1149 data = ucode->data;
1150
1151 len -= sizeof(*ucode);
1152
1153 while (len >= sizeof(*tlv)) {
1154 u16 tlv_alt;
1155
1156 len -= sizeof(*tlv);
1157 tlv = (void *)data;
1158
1159 tlv_len = le32_to_cpu(tlv->length);
1160 tlv_type = le16_to_cpu(tlv->type);
1161 tlv_alt = le16_to_cpu(tlv->alternative);
1162 tlv_data = tlv->data;
1163
1164 if (len < tlv_len) {
1165 IWL_ERR(priv, "invalid TLV len: %zd/%u\n",
1166 len, tlv_len);
1167 return -EINVAL;
1168 }
1169 len -= ALIGN(tlv_len, 4);
1170 data += sizeof(*tlv) + ALIGN(tlv_len, 4);
1171
1172 /*
1173 * Alternative 0 is always valid.
1174 *
1175 * Skip alternative TLVs that are not selected.
1176 */
1177 if (tlv_alt != 0 && tlv_alt != wanted_alternative)
1178 continue;
1179
1180 switch (tlv_type) {
1181 case IWL_UCODE_TLV_INST:
1182 pieces->inst = tlv_data;
1183 pieces->inst_size = tlv_len;
1184 break;
1185 case IWL_UCODE_TLV_DATA:
1186 pieces->data = tlv_data;
1187 pieces->data_size = tlv_len;
1188 break;
1189 case IWL_UCODE_TLV_INIT:
1190 pieces->init = tlv_data;
1191 pieces->init_size = tlv_len;
1192 break;
1193 case IWL_UCODE_TLV_INIT_DATA:
1194 pieces->init_data = tlv_data;
1195 pieces->init_data_size = tlv_len;
1196 break;
1197 case IWL_UCODE_TLV_BOOT:
1198 IWL_ERR(priv, "Found unexpected BOOT ucode\n");
1199 break;
1200 case IWL_UCODE_TLV_PROBE_MAX_LEN:
1201 if (tlv_len != sizeof(u32))
1202 goto invalid_tlv_len;
1203 capa->max_probe_length =
1204 le32_to_cpup((__le32 *)tlv_data);
1205 break;
1206 case IWL_UCODE_TLV_PAN:
1207 if (tlv_len)
1208 goto invalid_tlv_len;
1209 capa->flags |= IWL_UCODE_TLV_FLAGS_PAN;
1210 break;
1211 case IWL_UCODE_TLV_FLAGS:
1212 /* must be at least one u32 */
1213 if (tlv_len < sizeof(u32))
1214 goto invalid_tlv_len;
1215 /* and a proper number of u32s */
1216 if (tlv_len % sizeof(u32))
1217 goto invalid_tlv_len;
1218 /*
1219 * This driver only reads the first u32 as
1220 * right now no more features are defined,
1221 * if that changes then either the driver
1222 * will not work with the new firmware, or
1223 * it'll not take advantage of new features.
1224 */
1225 capa->flags = le32_to_cpup((__le32 *)tlv_data);
1226 break;
1227 case IWL_UCODE_TLV_INIT_EVTLOG_PTR:
1228 if (tlv_len != sizeof(u32))
1229 goto invalid_tlv_len;
1230 pieces->init_evtlog_ptr =
1231 le32_to_cpup((__le32 *)tlv_data);
1232 break;
1233 case IWL_UCODE_TLV_INIT_EVTLOG_SIZE:
1234 if (tlv_len != sizeof(u32))
1235 goto invalid_tlv_len;
1236 pieces->init_evtlog_size =
1237 le32_to_cpup((__le32 *)tlv_data);
1238 break;
1239 case IWL_UCODE_TLV_INIT_ERRLOG_PTR:
1240 if (tlv_len != sizeof(u32))
1241 goto invalid_tlv_len;
1242 pieces->init_errlog_ptr =
1243 le32_to_cpup((__le32 *)tlv_data);
1244 break;
1245 case IWL_UCODE_TLV_RUNT_EVTLOG_PTR:
1246 if (tlv_len != sizeof(u32))
1247 goto invalid_tlv_len;
1248 pieces->inst_evtlog_ptr =
1249 le32_to_cpup((__le32 *)tlv_data);
1250 break;
1251 case IWL_UCODE_TLV_RUNT_EVTLOG_SIZE:
1252 if (tlv_len != sizeof(u32))
1253 goto invalid_tlv_len;
1254 pieces->inst_evtlog_size =
1255 le32_to_cpup((__le32 *)tlv_data);
1256 break;
1257 case IWL_UCODE_TLV_RUNT_ERRLOG_PTR:
1258 if (tlv_len != sizeof(u32))
1259 goto invalid_tlv_len;
1260 pieces->inst_errlog_ptr =
1261 le32_to_cpup((__le32 *)tlv_data);
1262 break;
1263 case IWL_UCODE_TLV_ENHANCE_SENS_TBL:
1264 if (tlv_len)
1265 goto invalid_tlv_len;
1266 priv->enhance_sensitivity_table = true;
1267 break;
1268 case IWL_UCODE_TLV_PHY_CALIBRATION_SIZE:
1269 if (tlv_len != sizeof(u32))
1270 goto invalid_tlv_len;
1271 capa->standard_phy_calibration_size =
1272 le32_to_cpup((__le32 *)tlv_data);
1273 break;
1274 default:
1275 IWL_DEBUG_INFO(priv, "unknown TLV: %d\n", tlv_type);
1276 break;
1277 }
1278 }
1279
1280 if (len) {
1281 IWL_ERR(priv, "invalid TLV after parsing: %zd\n", len);
1282 iwl_print_hex_dump(priv, IWL_DL_FW, (u8 *)data, len);
1283 return -EINVAL;
1284 }
1285
1286 return 0;
1287
1288 invalid_tlv_len:
1289 IWL_ERR(priv, "TLV %d has invalid size: %u\n", tlv_type, tlv_len);
1290 iwl_print_hex_dump(priv, IWL_DL_FW, tlv_data, tlv_len);
1291
1292 return -EINVAL;
1293 }
1294
1295 /**
1296 * iwl_ucode_callback - callback when firmware was loaded
1297 *
1298 * If loaded successfully, copies the firmware into buffers
1299 * for the card to fetch (via DMA).
1300 */
1301 static void iwl_ucode_callback(const struct firmware *ucode_raw, void *context)
1302 {
1303 struct iwl_priv *priv = context;
1304 struct iwl_ucode_header *ucode;
1305 int err;
1306 struct iwlagn_firmware_pieces pieces;
1307 const unsigned int api_max = priv->cfg->ucode_api_max;
1308 const unsigned int api_min = priv->cfg->ucode_api_min;
1309 u32 api_ver;
1310 char buildstr[25];
1311 u32 build;
1312 struct iwlagn_ucode_capabilities ucode_capa = {
1313 .max_probe_length = 200,
1314 .standard_phy_calibration_size =
1315 IWL_DEFAULT_STANDARD_PHY_CALIBRATE_TBL_SIZE,
1316 };
1317
1318 memset(&pieces, 0, sizeof(pieces));
1319
1320 if (!ucode_raw) {
1321 if (priv->fw_index <= priv->cfg->ucode_api_max)
1322 IWL_ERR(priv,
1323 "request for firmware file '%s' failed.\n",
1324 priv->firmware_name);
1325 goto try_again;
1326 }
1327
1328 IWL_DEBUG_INFO(priv, "Loaded firmware file '%s' (%zd bytes).\n",
1329 priv->firmware_name, ucode_raw->size);
1330
1331 /* Make sure that we got at least the API version number */
1332 if (ucode_raw->size < 4) {
1333 IWL_ERR(priv, "File size way too small!\n");
1334 goto try_again;
1335 }
1336
1337 /* Data from ucode file: header followed by uCode images */
1338 ucode = (struct iwl_ucode_header *)ucode_raw->data;
1339
1340 if (ucode->ver)
1341 err = iwlagn_load_legacy_firmware(priv, ucode_raw, &pieces);
1342 else
1343 err = iwlagn_load_firmware(priv, ucode_raw, &pieces,
1344 &ucode_capa);
1345
1346 if (err)
1347 goto try_again;
1348
1349 api_ver = IWL_UCODE_API(priv->ucode_ver);
1350 build = pieces.build;
1351
1352 /*
1353 * api_ver should match the api version forming part of the
1354 * firmware filename ... but we don't check for that and only rely
1355 * on the API version read from firmware header from here on forward
1356 */
1357 /* no api version check required for experimental uCode */
1358 if (priv->fw_index != UCODE_EXPERIMENTAL_INDEX) {
1359 if (api_ver < api_min || api_ver > api_max) {
1360 IWL_ERR(priv,
1361 "Driver unable to support your firmware API. "
1362 "Driver supports v%u, firmware is v%u.\n",
1363 api_max, api_ver);
1364 goto try_again;
1365 }
1366
1367 if (api_ver != api_max)
1368 IWL_ERR(priv,
1369 "Firmware has old API version. Expected v%u, "
1370 "got v%u. New firmware can be obtained "
1371 "from http://www.intellinuxwireless.org.\n",
1372 api_max, api_ver);
1373 }
1374
1375 if (build)
1376 sprintf(buildstr, " build %u%s", build,
1377 (priv->fw_index == UCODE_EXPERIMENTAL_INDEX)
1378 ? " (EXP)" : "");
1379 else
1380 buildstr[0] = '\0';
1381
1382 IWL_INFO(priv, "loaded firmware version %u.%u.%u.%u%s\n",
1383 IWL_UCODE_MAJOR(priv->ucode_ver),
1384 IWL_UCODE_MINOR(priv->ucode_ver),
1385 IWL_UCODE_API(priv->ucode_ver),
1386 IWL_UCODE_SERIAL(priv->ucode_ver),
1387 buildstr);
1388
1389 snprintf(priv->hw->wiphy->fw_version,
1390 sizeof(priv->hw->wiphy->fw_version),
1391 "%u.%u.%u.%u%s",
1392 IWL_UCODE_MAJOR(priv->ucode_ver),
1393 IWL_UCODE_MINOR(priv->ucode_ver),
1394 IWL_UCODE_API(priv->ucode_ver),
1395 IWL_UCODE_SERIAL(priv->ucode_ver),
1396 buildstr);
1397
1398 /*
1399 * For any of the failures below (before allocating pci memory)
1400 * we will try to load a version with a smaller API -- maybe the
1401 * user just got a corrupted version of the latest API.
1402 */
1403
1404 IWL_DEBUG_INFO(priv, "f/w package hdr ucode version raw = 0x%x\n",
1405 priv->ucode_ver);
1406 IWL_DEBUG_INFO(priv, "f/w package hdr runtime inst size = %Zd\n",
1407 pieces.inst_size);
1408 IWL_DEBUG_INFO(priv, "f/w package hdr runtime data size = %Zd\n",
1409 pieces.data_size);
1410 IWL_DEBUG_INFO(priv, "f/w package hdr init inst size = %Zd\n",
1411 pieces.init_size);
1412 IWL_DEBUG_INFO(priv, "f/w package hdr init data size = %Zd\n",
1413 pieces.init_data_size);
1414
1415 /* Verify that uCode images will fit in card's SRAM */
1416 if (pieces.inst_size > priv->hw_params.max_inst_size) {
1417 IWL_ERR(priv, "uCode instr len %Zd too large to fit in\n",
1418 pieces.inst_size);
1419 goto try_again;
1420 }
1421
1422 if (pieces.data_size > priv->hw_params.max_data_size) {
1423 IWL_ERR(priv, "uCode data len %Zd too large to fit in\n",
1424 pieces.data_size);
1425 goto try_again;
1426 }
1427
1428 if (pieces.init_size > priv->hw_params.max_inst_size) {
1429 IWL_ERR(priv, "uCode init instr len %Zd too large to fit in\n",
1430 pieces.init_size);
1431 goto try_again;
1432 }
1433
1434 if (pieces.init_data_size > priv->hw_params.max_data_size) {
1435 IWL_ERR(priv, "uCode init data len %Zd too large to fit in\n",
1436 pieces.init_data_size);
1437 goto try_again;
1438 }
1439
1440 /* Allocate ucode buffers for card's bus-master loading ... */
1441
1442 /* Runtime instructions and 2 copies of data:
1443 * 1) unmodified from disk
1444 * 2) backup cache for save/restore during power-downs */
1445 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.code,
1446 pieces.inst, pieces.inst_size))
1447 goto err_pci_alloc;
1448 if (iwl_alloc_fw_desc(priv, &priv->ucode_rt.data,
1449 pieces.data, pieces.data_size))
1450 goto err_pci_alloc;
1451
1452 /* Initialization instructions and data */
1453 if (pieces.init_size && pieces.init_data_size) {
1454 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.code,
1455 pieces.init, pieces.init_size))
1456 goto err_pci_alloc;
1457 if (iwl_alloc_fw_desc(priv, &priv->ucode_init.data,
1458 pieces.init_data, pieces.init_data_size))
1459 goto err_pci_alloc;
1460 }
1461
1462 /* Now that we can no longer fail, copy information */
1463
1464 /*
1465 * The (size - 16) / 12 formula is based on the information recorded
1466 * for each event, which is of mode 1 (including timestamp) for all
1467 * new microcodes that include this information.
1468 */
1469 priv->_agn.init_evtlog_ptr = pieces.init_evtlog_ptr;
1470 if (pieces.init_evtlog_size)
1471 priv->_agn.init_evtlog_size = (pieces.init_evtlog_size - 16)/12;
1472 else
1473 priv->_agn.init_evtlog_size =
1474 priv->cfg->base_params->max_event_log_size;
1475 priv->_agn.init_errlog_ptr = pieces.init_errlog_ptr;
1476 priv->_agn.inst_evtlog_ptr = pieces.inst_evtlog_ptr;
1477 if (pieces.inst_evtlog_size)
1478 priv->_agn.inst_evtlog_size = (pieces.inst_evtlog_size - 16)/12;
1479 else
1480 priv->_agn.inst_evtlog_size =
1481 priv->cfg->base_params->max_event_log_size;
1482 priv->_agn.inst_errlog_ptr = pieces.inst_errlog_ptr;
1483
1484 priv->new_scan_threshold_behaviour =
1485 !!(ucode_capa.flags & IWL_UCODE_TLV_FLAGS_NEWSCAN);
1486
1487 if ((priv->cfg->sku & EEPROM_SKU_CAP_IPAN_ENABLE) &&
1488 (ucode_capa.flags & IWL_UCODE_TLV_FLAGS_PAN)) {
1489 priv->valid_contexts |= BIT(IWL_RXON_CTX_PAN);
1490 priv->sta_key_max_num = STA_KEY_MAX_NUM_PAN;
1491 } else
1492 priv->sta_key_max_num = STA_KEY_MAX_NUM;
1493
1494 if (priv->valid_contexts != BIT(IWL_RXON_CTX_BSS))
1495 priv->cmd_queue = IWL_IPAN_CMD_QUEUE_NUM;
1496 else
1497 priv->cmd_queue = IWL_DEFAULT_CMD_QUEUE_NUM;
1498
1499 /*
1500 * figure out the offset of chain noise reset and gain commands
1501 * base on the size of standard phy calibration commands table size
1502 */
1503 if (ucode_capa.standard_phy_calibration_size >
1504 IWL_MAX_PHY_CALIBRATE_TBL_SIZE)
1505 ucode_capa.standard_phy_calibration_size =
1506 IWL_MAX_STANDARD_PHY_CALIBRATE_TBL_SIZE;
1507
1508 priv->_agn.phy_calib_chain_noise_reset_cmd =
1509 ucode_capa.standard_phy_calibration_size;
1510 priv->_agn.phy_calib_chain_noise_gain_cmd =
1511 ucode_capa.standard_phy_calibration_size + 1;
1512
1513 /**************************************************
1514 * This is still part of probe() in a sense...
1515 *
1516 * 9. Setup and register with mac80211 and debugfs
1517 **************************************************/
1518 err = iwl_mac_setup_register(priv, &ucode_capa);
1519 if (err)
1520 goto out_unbind;
1521
1522 err = iwl_dbgfs_register(priv, DRV_NAME);
1523 if (err)
1524 IWL_ERR(priv, "failed to create debugfs files. Ignoring error: %d\n", err);
1525
1526 err = sysfs_create_group(&(priv->bus.dev->kobj),
1527 &iwl_attribute_group);
1528 if (err) {
1529 IWL_ERR(priv, "failed to create sysfs device attributes\n");
1530 goto out_unbind;
1531 }
1532
1533 /* We have our copies now, allow OS release its copies */
1534 release_firmware(ucode_raw);
1535 complete(&priv->_agn.firmware_loading_complete);
1536 return;
1537
1538 try_again:
1539 /* try next, if any */
1540 if (iwl_request_firmware(priv, false))
1541 goto out_unbind;
1542 release_firmware(ucode_raw);
1543 return;
1544
1545 err_pci_alloc:
1546 IWL_ERR(priv, "failed to allocate pci memory\n");
1547 iwl_dealloc_ucode(priv);
1548 out_unbind:
1549 complete(&priv->_agn.firmware_loading_complete);
1550 device_release_driver(priv->bus.dev);
1551 release_firmware(ucode_raw);
1552 }
1553
1554 static const char *desc_lookup_text[] = {
1555 "OK",
1556 "FAIL",
1557 "BAD_PARAM",
1558 "BAD_CHECKSUM",
1559 "NMI_INTERRUPT_WDG",
1560 "SYSASSERT",
1561 "FATAL_ERROR",
1562 "BAD_COMMAND",
1563 "HW_ERROR_TUNE_LOCK",
1564 "HW_ERROR_TEMPERATURE",
1565 "ILLEGAL_CHAN_FREQ",
1566 "VCC_NOT_STABLE",
1567 "FH_ERROR",
1568 "NMI_INTERRUPT_HOST",
1569 "NMI_INTERRUPT_ACTION_PT",
1570 "NMI_INTERRUPT_UNKNOWN",
1571 "UCODE_VERSION_MISMATCH",
1572 "HW_ERROR_ABS_LOCK",
1573 "HW_ERROR_CAL_LOCK_FAIL",
1574 "NMI_INTERRUPT_INST_ACTION_PT",
1575 "NMI_INTERRUPT_DATA_ACTION_PT",
1576 "NMI_TRM_HW_ER",
1577 "NMI_INTERRUPT_TRM",
1578 "NMI_INTERRUPT_BREAK_POINT"
1579 "DEBUG_0",
1580 "DEBUG_1",
1581 "DEBUG_2",
1582 "DEBUG_3",
1583 };
1584
1585 static struct { char *name; u8 num; } advanced_lookup[] = {
1586 { "NMI_INTERRUPT_WDG", 0x34 },
1587 { "SYSASSERT", 0x35 },
1588 { "UCODE_VERSION_MISMATCH", 0x37 },
1589 { "BAD_COMMAND", 0x38 },
1590 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
1591 { "FATAL_ERROR", 0x3D },
1592 { "NMI_TRM_HW_ERR", 0x46 },
1593 { "NMI_INTERRUPT_TRM", 0x4C },
1594 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
1595 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
1596 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
1597 { "NMI_INTERRUPT_HOST", 0x66 },
1598 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
1599 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
1600 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
1601 { "ADVANCED_SYSASSERT", 0 },
1602 };
1603
1604 static const char *desc_lookup(u32 num)
1605 {
1606 int i;
1607 int max = ARRAY_SIZE(desc_lookup_text);
1608
1609 if (num < max)
1610 return desc_lookup_text[num];
1611
1612 max = ARRAY_SIZE(advanced_lookup) - 1;
1613 for (i = 0; i < max; i++) {
1614 if (advanced_lookup[i].num == num)
1615 break;
1616 }
1617 return advanced_lookup[i].name;
1618 }
1619
1620 #define ERROR_START_OFFSET (1 * sizeof(u32))
1621 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
1622
1623 void iwl_dump_nic_error_log(struct iwl_priv *priv)
1624 {
1625 u32 base;
1626 struct iwl_error_event_table table;
1627
1628 base = priv->device_pointers.error_event_table;
1629 if (priv->ucode_type == IWL_UCODE_INIT) {
1630 if (!base)
1631 base = priv->_agn.init_errlog_ptr;
1632 } else {
1633 if (!base)
1634 base = priv->_agn.inst_errlog_ptr;
1635 }
1636
1637 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1638 IWL_ERR(priv,
1639 "Not valid error log pointer 0x%08X for %s uCode\n",
1640 base,
1641 (priv->ucode_type == IWL_UCODE_INIT)
1642 ? "Init" : "RT");
1643 return;
1644 }
1645
1646 iwl_read_targ_mem_words(priv, base, &table, sizeof(table));
1647
1648 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
1649 IWL_ERR(priv, "Start IWL Error Log Dump:\n");
1650 IWL_ERR(priv, "Status: 0x%08lX, count: %d\n",
1651 priv->status, table.valid);
1652 }
1653
1654 priv->isr_stats.err_code = table.error_id;
1655
1656 trace_iwlwifi_dev_ucode_error(priv, table.error_id, table.tsf_low,
1657 table.data1, table.data2, table.line,
1658 table.blink1, table.blink2, table.ilink1,
1659 table.ilink2, table.bcon_time, table.gp1,
1660 table.gp2, table.gp3, table.ucode_ver,
1661 table.hw_ver, table.brd_ver);
1662 IWL_ERR(priv, "0x%08X | %-28s\n", table.error_id,
1663 desc_lookup(table.error_id));
1664 IWL_ERR(priv, "0x%08X | uPc\n", table.pc);
1665 IWL_ERR(priv, "0x%08X | branchlink1\n", table.blink1);
1666 IWL_ERR(priv, "0x%08X | branchlink2\n", table.blink2);
1667 IWL_ERR(priv, "0x%08X | interruptlink1\n", table.ilink1);
1668 IWL_ERR(priv, "0x%08X | interruptlink2\n", table.ilink2);
1669 IWL_ERR(priv, "0x%08X | data1\n", table.data1);
1670 IWL_ERR(priv, "0x%08X | data2\n", table.data2);
1671 IWL_ERR(priv, "0x%08X | line\n", table.line);
1672 IWL_ERR(priv, "0x%08X | beacon time\n", table.bcon_time);
1673 IWL_ERR(priv, "0x%08X | tsf low\n", table.tsf_low);
1674 IWL_ERR(priv, "0x%08X | tsf hi\n", table.tsf_hi);
1675 IWL_ERR(priv, "0x%08X | time gp1\n", table.gp1);
1676 IWL_ERR(priv, "0x%08X | time gp2\n", table.gp2);
1677 IWL_ERR(priv, "0x%08X | time gp3\n", table.gp3);
1678 IWL_ERR(priv, "0x%08X | uCode version\n", table.ucode_ver);
1679 IWL_ERR(priv, "0x%08X | hw version\n", table.hw_ver);
1680 IWL_ERR(priv, "0x%08X | board version\n", table.brd_ver);
1681 IWL_ERR(priv, "0x%08X | hcmd\n", table.hcmd);
1682 }
1683
1684 #define EVENT_START_OFFSET (4 * sizeof(u32))
1685
1686 /**
1687 * iwl_print_event_log - Dump error event log to syslog
1688 *
1689 */
1690 static int iwl_print_event_log(struct iwl_priv *priv, u32 start_idx,
1691 u32 num_events, u32 mode,
1692 int pos, char **buf, size_t bufsz)
1693 {
1694 u32 i;
1695 u32 base; /* SRAM byte address of event log header */
1696 u32 event_size; /* 2 u32s, or 3 u32s if timestamp recorded */
1697 u32 ptr; /* SRAM byte address of log data */
1698 u32 ev, time, data; /* event log data */
1699 unsigned long reg_flags;
1700
1701 if (num_events == 0)
1702 return pos;
1703
1704 base = priv->device_pointers.log_event_table;
1705 if (priv->ucode_type == IWL_UCODE_INIT) {
1706 if (!base)
1707 base = priv->_agn.init_evtlog_ptr;
1708 } else {
1709 if (!base)
1710 base = priv->_agn.inst_evtlog_ptr;
1711 }
1712
1713 if (mode == 0)
1714 event_size = 2 * sizeof(u32);
1715 else
1716 event_size = 3 * sizeof(u32);
1717
1718 ptr = base + EVENT_START_OFFSET + (start_idx * event_size);
1719
1720 /* Make sure device is powered up for SRAM reads */
1721 spin_lock_irqsave(&priv->reg_lock, reg_flags);
1722 iwl_grab_nic_access(priv);
1723
1724 /* Set starting address; reads will auto-increment */
1725 iwl_write32(priv, HBUS_TARG_MEM_RADDR, ptr);
1726 rmb();
1727
1728 /* "time" is actually "data" for mode 0 (no timestamp).
1729 * place event id # at far right for easier visual parsing. */
1730 for (i = 0; i < num_events; i++) {
1731 ev = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1732 time = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1733 if (mode == 0) {
1734 /* data, ev */
1735 if (bufsz) {
1736 pos += scnprintf(*buf + pos, bufsz - pos,
1737 "EVT_LOG:0x%08x:%04u\n",
1738 time, ev);
1739 } else {
1740 trace_iwlwifi_dev_ucode_event(priv, 0,
1741 time, ev);
1742 IWL_ERR(priv, "EVT_LOG:0x%08x:%04u\n",
1743 time, ev);
1744 }
1745 } else {
1746 data = iwl_read32(priv, HBUS_TARG_MEM_RDAT);
1747 if (bufsz) {
1748 pos += scnprintf(*buf + pos, bufsz - pos,
1749 "EVT_LOGT:%010u:0x%08x:%04u\n",
1750 time, data, ev);
1751 } else {
1752 IWL_ERR(priv, "EVT_LOGT:%010u:0x%08x:%04u\n",
1753 time, data, ev);
1754 trace_iwlwifi_dev_ucode_event(priv, time,
1755 data, ev);
1756 }
1757 }
1758 }
1759
1760 /* Allow device to power down */
1761 iwl_release_nic_access(priv);
1762 spin_unlock_irqrestore(&priv->reg_lock, reg_flags);
1763 return pos;
1764 }
1765
1766 /**
1767 * iwl_print_last_event_logs - Dump the newest # of event log to syslog
1768 */
1769 static int iwl_print_last_event_logs(struct iwl_priv *priv, u32 capacity,
1770 u32 num_wraps, u32 next_entry,
1771 u32 size, u32 mode,
1772 int pos, char **buf, size_t bufsz)
1773 {
1774 /*
1775 * display the newest DEFAULT_LOG_ENTRIES entries
1776 * i.e the entries just before the next ont that uCode would fill.
1777 */
1778 if (num_wraps) {
1779 if (next_entry < size) {
1780 pos = iwl_print_event_log(priv,
1781 capacity - (size - next_entry),
1782 size - next_entry, mode,
1783 pos, buf, bufsz);
1784 pos = iwl_print_event_log(priv, 0,
1785 next_entry, mode,
1786 pos, buf, bufsz);
1787 } else
1788 pos = iwl_print_event_log(priv, next_entry - size,
1789 size, mode, pos, buf, bufsz);
1790 } else {
1791 if (next_entry < size) {
1792 pos = iwl_print_event_log(priv, 0, next_entry,
1793 mode, pos, buf, bufsz);
1794 } else {
1795 pos = iwl_print_event_log(priv, next_entry - size,
1796 size, mode, pos, buf, bufsz);
1797 }
1798 }
1799 return pos;
1800 }
1801
1802 #define DEFAULT_DUMP_EVENT_LOG_ENTRIES (20)
1803
1804 int iwl_dump_nic_event_log(struct iwl_priv *priv, bool full_log,
1805 char **buf, bool display)
1806 {
1807 u32 base; /* SRAM byte address of event log header */
1808 u32 capacity; /* event log capacity in # entries */
1809 u32 mode; /* 0 - no timestamp, 1 - timestamp recorded */
1810 u32 num_wraps; /* # times uCode wrapped to top of log */
1811 u32 next_entry; /* index of next entry to be written by uCode */
1812 u32 size; /* # entries that we'll print */
1813 u32 logsize;
1814 int pos = 0;
1815 size_t bufsz = 0;
1816
1817 base = priv->device_pointers.log_event_table;
1818 if (priv->ucode_type == IWL_UCODE_INIT) {
1819 logsize = priv->_agn.init_evtlog_size;
1820 if (!base)
1821 base = priv->_agn.init_evtlog_ptr;
1822 } else {
1823 logsize = priv->_agn.inst_evtlog_size;
1824 if (!base)
1825 base = priv->_agn.inst_evtlog_ptr;
1826 }
1827
1828 if (!priv->cfg->ops->lib->is_valid_rtc_data_addr(base)) {
1829 IWL_ERR(priv,
1830 "Invalid event log pointer 0x%08X for %s uCode\n",
1831 base,
1832 (priv->ucode_type == IWL_UCODE_INIT)
1833 ? "Init" : "RT");
1834 return -EINVAL;
1835 }
1836
1837 /* event log header */
1838 capacity = iwl_read_targ_mem(priv, base);
1839 mode = iwl_read_targ_mem(priv, base + (1 * sizeof(u32)));
1840 num_wraps = iwl_read_targ_mem(priv, base + (2 * sizeof(u32)));
1841 next_entry = iwl_read_targ_mem(priv, base + (3 * sizeof(u32)));
1842
1843 if (capacity > logsize) {
1844 IWL_ERR(priv, "Log capacity %d is bogus, limit to %d entries\n",
1845 capacity, logsize);
1846 capacity = logsize;
1847 }
1848
1849 if (next_entry > logsize) {
1850 IWL_ERR(priv, "Log write index %d is bogus, limit to %d\n",
1851 next_entry, logsize);
1852 next_entry = logsize;
1853 }
1854
1855 size = num_wraps ? capacity : next_entry;
1856
1857 /* bail out if nothing in log */
1858 if (size == 0) {
1859 IWL_ERR(priv, "Start IWL Event Log Dump: nothing in log\n");
1860 return pos;
1861 }
1862
1863 /* enable/disable bt channel inhibition */
1864 priv->bt_ch_announce = iwlagn_bt_ch_announce;
1865
1866 #ifdef CONFIG_IWLWIFI_DEBUG
1867 if (!(iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) && !full_log)
1868 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1869 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1870 #else
1871 size = (size > DEFAULT_DUMP_EVENT_LOG_ENTRIES)
1872 ? DEFAULT_DUMP_EVENT_LOG_ENTRIES : size;
1873 #endif
1874 IWL_ERR(priv, "Start IWL Event Log Dump: display last %u entries\n",
1875 size);
1876
1877 #ifdef CONFIG_IWLWIFI_DEBUG
1878 if (display) {
1879 if (full_log)
1880 bufsz = capacity * 48;
1881 else
1882 bufsz = size * 48;
1883 *buf = kmalloc(bufsz, GFP_KERNEL);
1884 if (!*buf)
1885 return -ENOMEM;
1886 }
1887 if ((iwl_get_debug_level(priv) & IWL_DL_FW_ERRORS) || full_log) {
1888 /*
1889 * if uCode has wrapped back to top of log,
1890 * start at the oldest entry,
1891 * i.e the next one that uCode would fill.
1892 */
1893 if (num_wraps)
1894 pos = iwl_print_event_log(priv, next_entry,
1895 capacity - next_entry, mode,
1896 pos, buf, bufsz);
1897 /* (then/else) start at top of log */
1898 pos = iwl_print_event_log(priv, 0,
1899 next_entry, mode, pos, buf, bufsz);
1900 } else
1901 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1902 next_entry, size, mode,
1903 pos, buf, bufsz);
1904 #else
1905 pos = iwl_print_last_event_logs(priv, capacity, num_wraps,
1906 next_entry, size, mode,
1907 pos, buf, bufsz);
1908 #endif
1909 return pos;
1910 }
1911
1912 static void iwl_rf_kill_ct_config(struct iwl_priv *priv)
1913 {
1914 struct iwl_ct_kill_config cmd;
1915 struct iwl_ct_kill_throttling_config adv_cmd;
1916 unsigned long flags;
1917 int ret = 0;
1918
1919 spin_lock_irqsave(&priv->lock, flags);
1920 iwl_write32(priv, CSR_UCODE_DRV_GP1_CLR,
1921 CSR_UCODE_DRV_GP1_REG_BIT_CT_KILL_EXIT);
1922 spin_unlock_irqrestore(&priv->lock, flags);
1923 priv->thermal_throttle.ct_kill_toggle = false;
1924
1925 if (priv->cfg->base_params->support_ct_kill_exit) {
1926 adv_cmd.critical_temperature_enter =
1927 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1928 adv_cmd.critical_temperature_exit =
1929 cpu_to_le32(priv->hw_params.ct_kill_exit_threshold);
1930
1931 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1932 sizeof(adv_cmd), &adv_cmd);
1933 if (ret)
1934 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1935 else
1936 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1937 "succeeded, "
1938 "critical temperature enter is %d,"
1939 "exit is %d\n",
1940 priv->hw_params.ct_kill_threshold,
1941 priv->hw_params.ct_kill_exit_threshold);
1942 } else {
1943 cmd.critical_temperature_R =
1944 cpu_to_le32(priv->hw_params.ct_kill_threshold);
1945
1946 ret = iwl_send_cmd_pdu(priv, REPLY_CT_KILL_CONFIG_CMD,
1947 sizeof(cmd), &cmd);
1948 if (ret)
1949 IWL_ERR(priv, "REPLY_CT_KILL_CONFIG_CMD failed\n");
1950 else
1951 IWL_DEBUG_INFO(priv, "REPLY_CT_KILL_CONFIG_CMD "
1952 "succeeded, "
1953 "critical temperature is %d\n",
1954 priv->hw_params.ct_kill_threshold);
1955 }
1956 }
1957
1958 static int iwlagn_send_calib_cfg_rt(struct iwl_priv *priv, u32 cfg)
1959 {
1960 struct iwl_calib_cfg_cmd calib_cfg_cmd;
1961 struct iwl_host_cmd cmd = {
1962 .id = CALIBRATION_CFG_CMD,
1963 .len = { sizeof(struct iwl_calib_cfg_cmd), },
1964 .data = { &calib_cfg_cmd, },
1965 };
1966
1967 memset(&calib_cfg_cmd, 0, sizeof(calib_cfg_cmd));
1968 calib_cfg_cmd.ucd_calib_cfg.once.is_enable = IWL_CALIB_INIT_CFG_ALL;
1969 calib_cfg_cmd.ucd_calib_cfg.once.start = cpu_to_le32(cfg);
1970
1971 return iwl_send_cmd(priv, &cmd);
1972 }
1973
1974
1975 /**
1976 * iwl_alive_start - called after REPLY_ALIVE notification received
1977 * from protocol/runtime uCode (initialization uCode's
1978 * Alive gets handled by iwl_init_alive_start()).
1979 */
1980 int iwl_alive_start(struct iwl_priv *priv)
1981 {
1982 int ret = 0;
1983 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
1984
1985 iwl_reset_ict(priv);
1986
1987 IWL_DEBUG_INFO(priv, "Runtime Alive received.\n");
1988
1989 /* After the ALIVE response, we can send host commands to the uCode */
1990 set_bit(STATUS_ALIVE, &priv->status);
1991
1992 /* Enable watchdog to monitor the driver tx queues */
1993 iwl_setup_watchdog(priv);
1994
1995 if (iwl_is_rfkill(priv))
1996 return -ERFKILL;
1997
1998 /* download priority table before any calibration request */
1999 if (priv->cfg->bt_params &&
2000 priv->cfg->bt_params->advanced_bt_coexist) {
2001 /* Configure Bluetooth device coexistence support */
2002 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
2003 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
2004 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
2005 priv->cfg->ops->hcmd->send_bt_config(priv);
2006 priv->bt_valid = IWLAGN_BT_VALID_ENABLE_FLAGS;
2007 iwlagn_send_prio_tbl(priv);
2008
2009 /* FIXME: w/a to force change uCode BT state machine */
2010 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_OPEN,
2011 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2012 if (ret)
2013 return ret;
2014 ret = iwlagn_send_bt_env(priv, IWL_BT_COEX_ENV_CLOSE,
2015 BT_COEX_PRIO_TBL_EVT_INIT_CALIB2);
2016 if (ret)
2017 return ret;
2018 }
2019 if (priv->hw_params.calib_rt_cfg)
2020 iwlagn_send_calib_cfg_rt(priv, priv->hw_params.calib_rt_cfg);
2021
2022 ieee80211_wake_queues(priv->hw);
2023
2024 priv->active_rate = IWL_RATES_MASK;
2025
2026 /* Configure Tx antenna selection based on H/W config */
2027 if (priv->cfg->ops->hcmd->set_tx_ant)
2028 priv->cfg->ops->hcmd->set_tx_ant(priv, priv->cfg->valid_tx_ant);
2029
2030 if (iwl_is_associated_ctx(ctx)) {
2031 struct iwl_rxon_cmd *active_rxon =
2032 (struct iwl_rxon_cmd *)&ctx->active;
2033 /* apply any changes in staging */
2034 ctx->staging.filter_flags |= RXON_FILTER_ASSOC_MSK;
2035 active_rxon->filter_flags &= ~RXON_FILTER_ASSOC_MSK;
2036 } else {
2037 struct iwl_rxon_context *tmp;
2038 /* Initialize our rx_config data */
2039 for_each_context(priv, tmp)
2040 iwl_connection_init_rx_config(priv, tmp);
2041
2042 if (priv->cfg->ops->hcmd->set_rxon_chain)
2043 priv->cfg->ops->hcmd->set_rxon_chain(priv, ctx);
2044 }
2045
2046 if (!priv->cfg->bt_params || (priv->cfg->bt_params &&
2047 !priv->cfg->bt_params->advanced_bt_coexist)) {
2048 /*
2049 * default is 2-wire BT coexexistence support
2050 */
2051 priv->cfg->ops->hcmd->send_bt_config(priv);
2052 }
2053
2054 iwl_reset_run_time_calib(priv);
2055
2056 set_bit(STATUS_READY, &priv->status);
2057
2058 /* Configure the adapter for unassociated operation */
2059 ret = iwlagn_commit_rxon(priv, ctx);
2060 if (ret)
2061 return ret;
2062
2063 /* At this point, the NIC is initialized and operational */
2064 iwl_rf_kill_ct_config(priv);
2065
2066 IWL_DEBUG_INFO(priv, "ALIVE processing complete.\n");
2067
2068 return iwl_power_update_mode(priv, true);
2069 }
2070
2071 static void iwl_cancel_deferred_work(struct iwl_priv *priv);
2072
2073 static void __iwl_down(struct iwl_priv *priv)
2074 {
2075 int exit_pending;
2076
2077 IWL_DEBUG_INFO(priv, DRV_NAME " is going down\n");
2078
2079 iwl_scan_cancel_timeout(priv, 200);
2080
2081 exit_pending = test_and_set_bit(STATUS_EXIT_PENDING, &priv->status);
2082
2083 /* Stop TX queues watchdog. We need to have STATUS_EXIT_PENDING bit set
2084 * to prevent rearm timer */
2085 del_timer_sync(&priv->watchdog);
2086
2087 iwl_clear_ucode_stations(priv, NULL);
2088 iwl_dealloc_bcast_stations(priv);
2089 iwl_clear_driver_stations(priv);
2090
2091 /* reset BT coex data */
2092 priv->bt_status = 0;
2093 if (priv->cfg->bt_params)
2094 priv->bt_traffic_load =
2095 priv->cfg->bt_params->bt_init_traffic_load;
2096 else
2097 priv->bt_traffic_load = 0;
2098 priv->bt_full_concurrent = false;
2099 priv->bt_ci_compliance = 0;
2100
2101 /* Wipe out the EXIT_PENDING status bit if we are not actually
2102 * exiting the module */
2103 if (!exit_pending)
2104 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2105
2106 if (priv->mac80211_registered)
2107 ieee80211_stop_queues(priv->hw);
2108
2109 /* Clear out all status bits but a few that are stable across reset */
2110 priv->status &= test_bit(STATUS_RF_KILL_HW, &priv->status) <<
2111 STATUS_RF_KILL_HW |
2112 test_bit(STATUS_GEO_CONFIGURED, &priv->status) <<
2113 STATUS_GEO_CONFIGURED |
2114 test_bit(STATUS_FW_ERROR, &priv->status) <<
2115 STATUS_FW_ERROR |
2116 test_bit(STATUS_EXIT_PENDING, &priv->status) <<
2117 STATUS_EXIT_PENDING;
2118
2119 iwlagn_stop_device(priv);
2120
2121 dev_kfree_skb(priv->beacon_skb);
2122 priv->beacon_skb = NULL;
2123 }
2124
2125 static void iwl_down(struct iwl_priv *priv)
2126 {
2127 mutex_lock(&priv->mutex);
2128 __iwl_down(priv);
2129 mutex_unlock(&priv->mutex);
2130
2131 iwl_cancel_deferred_work(priv);
2132 }
2133
2134 #define HW_READY_TIMEOUT (50)
2135
2136 /* Note: returns poll_bit return value, which is >= 0 if success */
2137 static int iwl_set_hw_ready(struct iwl_priv *priv)
2138 {
2139 int ret;
2140
2141 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2142 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY);
2143
2144 /* See if we got it */
2145 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2146 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2147 CSR_HW_IF_CONFIG_REG_BIT_NIC_READY,
2148 HW_READY_TIMEOUT);
2149
2150 IWL_DEBUG_INFO(priv, "hardware%s ready\n", ret < 0 ? " not" : "");
2151 return ret;
2152 }
2153
2154 /* Note: returns standard 0/-ERROR code */
2155 int iwl_prepare_card_hw(struct iwl_priv *priv)
2156 {
2157 int ret;
2158
2159 IWL_DEBUG_INFO(priv, "iwl_prepare_card_hw enter\n");
2160
2161 ret = iwl_set_hw_ready(priv);
2162 if (ret >= 0)
2163 return 0;
2164
2165 /* If HW is not ready, prepare the conditions to check again */
2166 iwl_set_bit(priv, CSR_HW_IF_CONFIG_REG,
2167 CSR_HW_IF_CONFIG_REG_PREPARE);
2168
2169 ret = iwl_poll_bit(priv, CSR_HW_IF_CONFIG_REG,
2170 ~CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE,
2171 CSR_HW_IF_CONFIG_REG_BIT_NIC_PREPARE_DONE, 150000);
2172
2173 if (ret < 0)
2174 return ret;
2175
2176 /* HW should be ready by now, check again. */
2177 ret = iwl_set_hw_ready(priv);
2178 if (ret >= 0)
2179 return 0;
2180 return ret;
2181 }
2182
2183 #define MAX_HW_RESTARTS 5
2184
2185 static int __iwl_up(struct iwl_priv *priv)
2186 {
2187 struct iwl_rxon_context *ctx;
2188 int ret;
2189
2190 lockdep_assert_held(&priv->mutex);
2191
2192 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
2193 IWL_WARN(priv, "Exit pending; will not bring the NIC up\n");
2194 return -EIO;
2195 }
2196
2197 for_each_context(priv, ctx) {
2198 ret = iwlagn_alloc_bcast_station(priv, ctx);
2199 if (ret) {
2200 iwl_dealloc_bcast_stations(priv);
2201 return ret;
2202 }
2203 }
2204
2205 ret = iwlagn_run_init_ucode(priv);
2206 if (ret) {
2207 IWL_ERR(priv, "Failed to run INIT ucode: %d\n", ret);
2208 goto error;
2209 }
2210
2211 ret = iwlagn_load_ucode_wait_alive(priv,
2212 &priv->ucode_rt,
2213 IWL_UCODE_REGULAR);
2214 if (ret) {
2215 IWL_ERR(priv, "Failed to start RT ucode: %d\n", ret);
2216 goto error;
2217 }
2218
2219 ret = iwl_alive_start(priv);
2220 if (ret)
2221 goto error;
2222 return 0;
2223
2224 error:
2225 set_bit(STATUS_EXIT_PENDING, &priv->status);
2226 __iwl_down(priv);
2227 clear_bit(STATUS_EXIT_PENDING, &priv->status);
2228
2229 IWL_ERR(priv, "Unable to initialize device.\n");
2230 return ret;
2231 }
2232
2233
2234 /*****************************************************************************
2235 *
2236 * Workqueue callbacks
2237 *
2238 *****************************************************************************/
2239
2240 static void iwl_bg_run_time_calib_work(struct work_struct *work)
2241 {
2242 struct iwl_priv *priv = container_of(work, struct iwl_priv,
2243 run_time_calib_work);
2244
2245 mutex_lock(&priv->mutex);
2246
2247 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2248 test_bit(STATUS_SCANNING, &priv->status)) {
2249 mutex_unlock(&priv->mutex);
2250 return;
2251 }
2252
2253 if (priv->start_calib) {
2254 iwl_chain_noise_calibration(priv);
2255 iwl_sensitivity_calibration(priv);
2256 }
2257
2258 mutex_unlock(&priv->mutex);
2259 }
2260
2261 static void iwlagn_prepare_restart(struct iwl_priv *priv)
2262 {
2263 struct iwl_rxon_context *ctx;
2264 bool bt_full_concurrent;
2265 u8 bt_ci_compliance;
2266 u8 bt_load;
2267 u8 bt_status;
2268
2269 lockdep_assert_held(&priv->mutex);
2270
2271 for_each_context(priv, ctx)
2272 ctx->vif = NULL;
2273 priv->is_open = 0;
2274
2275 /*
2276 * __iwl_down() will clear the BT status variables,
2277 * which is correct, but when we restart we really
2278 * want to keep them so restore them afterwards.
2279 *
2280 * The restart process will later pick them up and
2281 * re-configure the hw when we reconfigure the BT
2282 * command.
2283 */
2284 bt_full_concurrent = priv->bt_full_concurrent;
2285 bt_ci_compliance = priv->bt_ci_compliance;
2286 bt_load = priv->bt_traffic_load;
2287 bt_status = priv->bt_status;
2288
2289 __iwl_down(priv);
2290
2291 priv->bt_full_concurrent = bt_full_concurrent;
2292 priv->bt_ci_compliance = bt_ci_compliance;
2293 priv->bt_traffic_load = bt_load;
2294 priv->bt_status = bt_status;
2295 }
2296
2297 static void iwl_bg_restart(struct work_struct *data)
2298 {
2299 struct iwl_priv *priv = container_of(data, struct iwl_priv, restart);
2300
2301 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2302 return;
2303
2304 if (test_and_clear_bit(STATUS_FW_ERROR, &priv->status)) {
2305 mutex_lock(&priv->mutex);
2306 iwlagn_prepare_restart(priv);
2307 mutex_unlock(&priv->mutex);
2308 iwl_cancel_deferred_work(priv);
2309 ieee80211_restart_hw(priv->hw);
2310 } else {
2311 WARN_ON(1);
2312 }
2313 }
2314
2315 static void iwl_bg_rx_replenish(struct work_struct *data)
2316 {
2317 struct iwl_priv *priv =
2318 container_of(data, struct iwl_priv, rx_replenish);
2319
2320 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2321 return;
2322
2323 mutex_lock(&priv->mutex);
2324 iwlagn_rx_replenish(priv);
2325 mutex_unlock(&priv->mutex);
2326 }
2327
2328 static int iwl_mac_offchannel_tx(struct ieee80211_hw *hw, struct sk_buff *skb,
2329 struct ieee80211_channel *chan,
2330 enum nl80211_channel_type channel_type,
2331 unsigned int wait)
2332 {
2333 struct iwl_priv *priv = hw->priv;
2334 int ret;
2335
2336 /* Not supported if we don't have PAN */
2337 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN))) {
2338 ret = -EOPNOTSUPP;
2339 goto free;
2340 }
2341
2342 /* Not supported on pre-P2P firmware */
2343 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
2344 BIT(NL80211_IFTYPE_P2P_CLIENT))) {
2345 ret = -EOPNOTSUPP;
2346 goto free;
2347 }
2348
2349 mutex_lock(&priv->mutex);
2350
2351 if (!priv->contexts[IWL_RXON_CTX_PAN].is_active) {
2352 /*
2353 * If the PAN context is free, use the normal
2354 * way of doing remain-on-channel offload + TX.
2355 */
2356 ret = 1;
2357 goto out;
2358 }
2359
2360 /* TODO: queue up if scanning? */
2361 if (test_bit(STATUS_SCANNING, &priv->status) ||
2362 priv->_agn.offchan_tx_skb) {
2363 ret = -EBUSY;
2364 goto out;
2365 }
2366
2367 /*
2368 * max_scan_ie_len doesn't include the blank SSID or the header,
2369 * so need to add that again here.
2370 */
2371 if (skb->len > hw->wiphy->max_scan_ie_len + 24 + 2) {
2372 ret = -ENOBUFS;
2373 goto out;
2374 }
2375
2376 priv->_agn.offchan_tx_skb = skb;
2377 priv->_agn.offchan_tx_timeout = wait;
2378 priv->_agn.offchan_tx_chan = chan;
2379
2380 ret = iwl_scan_initiate(priv, priv->contexts[IWL_RXON_CTX_PAN].vif,
2381 IWL_SCAN_OFFCH_TX, chan->band);
2382 if (ret)
2383 priv->_agn.offchan_tx_skb = NULL;
2384 out:
2385 mutex_unlock(&priv->mutex);
2386 free:
2387 if (ret < 0)
2388 kfree_skb(skb);
2389
2390 return ret;
2391 }
2392
2393 static int iwl_mac_offchannel_tx_cancel_wait(struct ieee80211_hw *hw)
2394 {
2395 struct iwl_priv *priv = hw->priv;
2396 int ret;
2397
2398 mutex_lock(&priv->mutex);
2399
2400 if (!priv->_agn.offchan_tx_skb) {
2401 ret = -EINVAL;
2402 goto unlock;
2403 }
2404
2405 priv->_agn.offchan_tx_skb = NULL;
2406
2407 ret = iwl_scan_cancel_timeout(priv, 200);
2408 if (ret)
2409 ret = -EIO;
2410 unlock:
2411 mutex_unlock(&priv->mutex);
2412
2413 return ret;
2414 }
2415
2416 /*****************************************************************************
2417 *
2418 * mac80211 entry point functions
2419 *
2420 *****************************************************************************/
2421
2422 static const struct ieee80211_iface_limit iwlagn_sta_ap_limits[] = {
2423 {
2424 .max = 1,
2425 .types = BIT(NL80211_IFTYPE_STATION),
2426 },
2427 {
2428 .max = 1,
2429 .types = BIT(NL80211_IFTYPE_AP),
2430 },
2431 };
2432
2433 static const struct ieee80211_iface_limit iwlagn_2sta_limits[] = {
2434 {
2435 .max = 2,
2436 .types = BIT(NL80211_IFTYPE_STATION),
2437 },
2438 };
2439
2440 static const struct ieee80211_iface_limit iwlagn_p2p_sta_go_limits[] = {
2441 {
2442 .max = 1,
2443 .types = BIT(NL80211_IFTYPE_STATION),
2444 },
2445 {
2446 .max = 1,
2447 .types = BIT(NL80211_IFTYPE_P2P_GO) |
2448 BIT(NL80211_IFTYPE_AP),
2449 },
2450 };
2451
2452 static const struct ieee80211_iface_limit iwlagn_p2p_2sta_limits[] = {
2453 {
2454 .max = 2,
2455 .types = BIT(NL80211_IFTYPE_STATION),
2456 },
2457 {
2458 .max = 1,
2459 .types = BIT(NL80211_IFTYPE_P2P_CLIENT),
2460 },
2461 };
2462
2463 static const struct ieee80211_iface_combination
2464 iwlagn_iface_combinations_dualmode[] = {
2465 { .num_different_channels = 1,
2466 .max_interfaces = 2,
2467 .beacon_int_infra_match = true,
2468 .limits = iwlagn_sta_ap_limits,
2469 .n_limits = ARRAY_SIZE(iwlagn_sta_ap_limits),
2470 },
2471 { .num_different_channels = 1,
2472 .max_interfaces = 2,
2473 .limits = iwlagn_2sta_limits,
2474 .n_limits = ARRAY_SIZE(iwlagn_2sta_limits),
2475 },
2476 };
2477
2478 static const struct ieee80211_iface_combination
2479 iwlagn_iface_combinations_p2p[] = {
2480 { .num_different_channels = 1,
2481 .max_interfaces = 2,
2482 .beacon_int_infra_match = true,
2483 .limits = iwlagn_p2p_sta_go_limits,
2484 .n_limits = ARRAY_SIZE(iwlagn_p2p_sta_go_limits),
2485 },
2486 { .num_different_channels = 1,
2487 .max_interfaces = 2,
2488 .limits = iwlagn_p2p_2sta_limits,
2489 .n_limits = ARRAY_SIZE(iwlagn_p2p_2sta_limits),
2490 },
2491 };
2492
2493 /*
2494 * Not a mac80211 entry point function, but it fits in with all the
2495 * other mac80211 functions grouped here.
2496 */
2497 static int iwl_mac_setup_register(struct iwl_priv *priv,
2498 struct iwlagn_ucode_capabilities *capa)
2499 {
2500 int ret;
2501 struct ieee80211_hw *hw = priv->hw;
2502 struct iwl_rxon_context *ctx;
2503
2504 hw->rate_control_algorithm = "iwl-agn-rs";
2505
2506 /* Tell mac80211 our characteristics */
2507 hw->flags = IEEE80211_HW_SIGNAL_DBM |
2508 IEEE80211_HW_AMPDU_AGGREGATION |
2509 IEEE80211_HW_NEED_DTIM_PERIOD |
2510 IEEE80211_HW_SPECTRUM_MGMT |
2511 IEEE80211_HW_REPORTS_TX_ACK_STATUS;
2512
2513 hw->max_tx_aggregation_subframes = LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2514
2515 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
2516 IEEE80211_HW_SUPPORTS_DYNAMIC_PS;
2517
2518 if (priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE)
2519 hw->flags |= IEEE80211_HW_SUPPORTS_DYNAMIC_SMPS |
2520 IEEE80211_HW_SUPPORTS_STATIC_SMPS;
2521
2522 if (capa->flags & IWL_UCODE_TLV_FLAGS_MFP)
2523 hw->flags |= IEEE80211_HW_MFP_CAPABLE;
2524
2525 hw->sta_data_size = sizeof(struct iwl_station_priv);
2526 hw->vif_data_size = sizeof(struct iwl_vif_priv);
2527
2528 for_each_context(priv, ctx) {
2529 hw->wiphy->interface_modes |= ctx->interface_modes;
2530 hw->wiphy->interface_modes |= ctx->exclusive_interface_modes;
2531 }
2532
2533 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
2534
2535 if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_P2P_CLIENT)) {
2536 hw->wiphy->iface_combinations = iwlagn_iface_combinations_p2p;
2537 hw->wiphy->n_iface_combinations =
2538 ARRAY_SIZE(iwlagn_iface_combinations_p2p);
2539 } else if (hw->wiphy->interface_modes & BIT(NL80211_IFTYPE_AP)) {
2540 hw->wiphy->iface_combinations = iwlagn_iface_combinations_dualmode;
2541 hw->wiphy->n_iface_combinations =
2542 ARRAY_SIZE(iwlagn_iface_combinations_dualmode);
2543 }
2544
2545 hw->wiphy->max_remain_on_channel_duration = 1000;
2546
2547 hw->wiphy->flags |= WIPHY_FLAG_CUSTOM_REGULATORY |
2548 WIPHY_FLAG_DISABLE_BEACON_HINTS |
2549 WIPHY_FLAG_IBSS_RSN;
2550
2551 /*
2552 * For now, disable PS by default because it affects
2553 * RX performance significantly.
2554 */
2555 hw->wiphy->flags &= ~WIPHY_FLAG_PS_ON_BY_DEFAULT;
2556
2557 hw->wiphy->max_scan_ssids = PROBE_OPTION_MAX;
2558 /* we create the 802.11 header and a zero-length SSID element */
2559 hw->wiphy->max_scan_ie_len = capa->max_probe_length - 24 - 2;
2560
2561 /* Default value; 4 EDCA QOS priorities */
2562 hw->queues = 4;
2563
2564 hw->max_listen_interval = IWL_CONN_MAX_LISTEN_INTERVAL;
2565
2566 if (priv->bands[IEEE80211_BAND_2GHZ].n_channels)
2567 priv->hw->wiphy->bands[IEEE80211_BAND_2GHZ] =
2568 &priv->bands[IEEE80211_BAND_2GHZ];
2569 if (priv->bands[IEEE80211_BAND_5GHZ].n_channels)
2570 priv->hw->wiphy->bands[IEEE80211_BAND_5GHZ] =
2571 &priv->bands[IEEE80211_BAND_5GHZ];
2572
2573 iwl_leds_init(priv);
2574
2575 ret = ieee80211_register_hw(priv->hw);
2576 if (ret) {
2577 IWL_ERR(priv, "Failed to register hw (error %d)\n", ret);
2578 return ret;
2579 }
2580 priv->mac80211_registered = 1;
2581
2582 return 0;
2583 }
2584
2585
2586 static int iwlagn_mac_start(struct ieee80211_hw *hw)
2587 {
2588 struct iwl_priv *priv = hw->priv;
2589 int ret;
2590
2591 IWL_DEBUG_MAC80211(priv, "enter\n");
2592
2593 /* we should be verifying the device is ready to be opened */
2594 mutex_lock(&priv->mutex);
2595 ret = __iwl_up(priv);
2596 mutex_unlock(&priv->mutex);
2597 if (ret)
2598 return ret;
2599
2600 IWL_DEBUG_INFO(priv, "Start UP work done.\n");
2601
2602 /* Now we should be done, and the READY bit should be set. */
2603 if (WARN_ON(!test_bit(STATUS_READY, &priv->status)))
2604 ret = -EIO;
2605
2606 iwlagn_led_enable(priv);
2607
2608 priv->is_open = 1;
2609 IWL_DEBUG_MAC80211(priv, "leave\n");
2610 return 0;
2611 }
2612
2613 static void iwlagn_mac_stop(struct ieee80211_hw *hw)
2614 {
2615 struct iwl_priv *priv = hw->priv;
2616
2617 IWL_DEBUG_MAC80211(priv, "enter\n");
2618
2619 if (!priv->is_open)
2620 return;
2621
2622 priv->is_open = 0;
2623
2624 iwl_down(priv);
2625
2626 flush_workqueue(priv->workqueue);
2627
2628 /* User space software may expect getting rfkill changes
2629 * even if interface is down */
2630 iwl_write32(priv, CSR_INT, 0xFFFFFFFF);
2631 iwl_enable_rfkill_int(priv);
2632
2633 IWL_DEBUG_MAC80211(priv, "leave\n");
2634 }
2635
2636 static void iwlagn_mac_tx(struct ieee80211_hw *hw, struct sk_buff *skb)
2637 {
2638 struct iwl_priv *priv = hw->priv;
2639
2640 IWL_DEBUG_MACDUMP(priv, "enter\n");
2641
2642 IWL_DEBUG_TX(priv, "dev->xmit(%d bytes) at rate 0x%02x\n", skb->len,
2643 ieee80211_get_tx_rate(hw, IEEE80211_SKB_CB(skb))->bitrate);
2644
2645 if (iwlagn_tx_skb(priv, skb))
2646 dev_kfree_skb_any(skb);
2647
2648 IWL_DEBUG_MACDUMP(priv, "leave\n");
2649 }
2650
2651 static void iwlagn_mac_update_tkip_key(struct ieee80211_hw *hw,
2652 struct ieee80211_vif *vif,
2653 struct ieee80211_key_conf *keyconf,
2654 struct ieee80211_sta *sta,
2655 u32 iv32, u16 *phase1key)
2656 {
2657 struct iwl_priv *priv = hw->priv;
2658 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2659
2660 IWL_DEBUG_MAC80211(priv, "enter\n");
2661
2662 iwl_update_tkip_key(priv, vif_priv->ctx, keyconf, sta,
2663 iv32, phase1key);
2664
2665 IWL_DEBUG_MAC80211(priv, "leave\n");
2666 }
2667
2668 static int iwlagn_mac_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
2669 struct ieee80211_vif *vif,
2670 struct ieee80211_sta *sta,
2671 struct ieee80211_key_conf *key)
2672 {
2673 struct iwl_priv *priv = hw->priv;
2674 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2675 struct iwl_rxon_context *ctx = vif_priv->ctx;
2676 int ret;
2677 u8 sta_id;
2678 bool is_default_wep_key = false;
2679
2680 IWL_DEBUG_MAC80211(priv, "enter\n");
2681
2682 if (iwlagn_mod_params.sw_crypto) {
2683 IWL_DEBUG_MAC80211(priv, "leave - hwcrypto disabled\n");
2684 return -EOPNOTSUPP;
2685 }
2686
2687 /*
2688 * To support IBSS RSN, don't program group keys in IBSS, the
2689 * hardware will then not attempt to decrypt the frames.
2690 */
2691 if (vif->type == NL80211_IFTYPE_ADHOC &&
2692 !(key->flags & IEEE80211_KEY_FLAG_PAIRWISE))
2693 return -EOPNOTSUPP;
2694
2695 sta_id = iwl_sta_id_or_broadcast(priv, vif_priv->ctx, sta);
2696 if (sta_id == IWL_INVALID_STATION)
2697 return -EINVAL;
2698
2699 mutex_lock(&priv->mutex);
2700 iwl_scan_cancel_timeout(priv, 100);
2701
2702 /*
2703 * If we are getting WEP group key and we didn't receive any key mapping
2704 * so far, we are in legacy wep mode (group key only), otherwise we are
2705 * in 1X mode.
2706 * In legacy wep mode, we use another host command to the uCode.
2707 */
2708 if ((key->cipher == WLAN_CIPHER_SUITE_WEP40 ||
2709 key->cipher == WLAN_CIPHER_SUITE_WEP104) &&
2710 !sta) {
2711 if (cmd == SET_KEY)
2712 is_default_wep_key = !ctx->key_mapping_keys;
2713 else
2714 is_default_wep_key =
2715 (key->hw_key_idx == HW_KEY_DEFAULT);
2716 }
2717
2718 switch (cmd) {
2719 case SET_KEY:
2720 if (is_default_wep_key)
2721 ret = iwl_set_default_wep_key(priv, vif_priv->ctx, key);
2722 else
2723 ret = iwl_set_dynamic_key(priv, vif_priv->ctx,
2724 key, sta_id);
2725
2726 IWL_DEBUG_MAC80211(priv, "enable hwcrypto key\n");
2727 break;
2728 case DISABLE_KEY:
2729 if (is_default_wep_key)
2730 ret = iwl_remove_default_wep_key(priv, ctx, key);
2731 else
2732 ret = iwl_remove_dynamic_key(priv, ctx, key, sta_id);
2733
2734 IWL_DEBUG_MAC80211(priv, "disable hwcrypto key\n");
2735 break;
2736 default:
2737 ret = -EINVAL;
2738 }
2739
2740 mutex_unlock(&priv->mutex);
2741 IWL_DEBUG_MAC80211(priv, "leave\n");
2742
2743 return ret;
2744 }
2745
2746 static int iwlagn_mac_ampdu_action(struct ieee80211_hw *hw,
2747 struct ieee80211_vif *vif,
2748 enum ieee80211_ampdu_mlme_action action,
2749 struct ieee80211_sta *sta, u16 tid, u16 *ssn,
2750 u8 buf_size)
2751 {
2752 struct iwl_priv *priv = hw->priv;
2753 int ret = -EINVAL;
2754 struct iwl_station_priv *sta_priv = (void *) sta->drv_priv;
2755
2756 IWL_DEBUG_HT(priv, "A-MPDU action on addr %pM tid %d\n",
2757 sta->addr, tid);
2758
2759 if (!(priv->cfg->sku & EEPROM_SKU_CAP_11N_ENABLE))
2760 return -EACCES;
2761
2762 mutex_lock(&priv->mutex);
2763
2764 switch (action) {
2765 case IEEE80211_AMPDU_RX_START:
2766 IWL_DEBUG_HT(priv, "start Rx\n");
2767 ret = iwl_sta_rx_agg_start(priv, sta, tid, *ssn);
2768 break;
2769 case IEEE80211_AMPDU_RX_STOP:
2770 IWL_DEBUG_HT(priv, "stop Rx\n");
2771 ret = iwl_sta_rx_agg_stop(priv, sta, tid);
2772 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2773 ret = 0;
2774 break;
2775 case IEEE80211_AMPDU_TX_START:
2776 IWL_DEBUG_HT(priv, "start Tx\n");
2777 ret = iwlagn_tx_agg_start(priv, vif, sta, tid, ssn);
2778 if (ret == 0) {
2779 priv->_agn.agg_tids_count++;
2780 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2781 priv->_agn.agg_tids_count);
2782 }
2783 break;
2784 case IEEE80211_AMPDU_TX_STOP:
2785 IWL_DEBUG_HT(priv, "stop Tx\n");
2786 ret = iwlagn_tx_agg_stop(priv, vif, sta, tid);
2787 if ((ret == 0) && (priv->_agn.agg_tids_count > 0)) {
2788 priv->_agn.agg_tids_count--;
2789 IWL_DEBUG_HT(priv, "priv->_agn.agg_tids_count = %u\n",
2790 priv->_agn.agg_tids_count);
2791 }
2792 if (test_bit(STATUS_EXIT_PENDING, &priv->status))
2793 ret = 0;
2794 if (priv->cfg->ht_params &&
2795 priv->cfg->ht_params->use_rts_for_aggregation) {
2796 /*
2797 * switch off RTS/CTS if it was previously enabled
2798 */
2799 sta_priv->lq_sta.lq.general_params.flags &=
2800 ~LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2801 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2802 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2803 }
2804 break;
2805 case IEEE80211_AMPDU_TX_OPERATIONAL:
2806 buf_size = min_t(int, buf_size, LINK_QUAL_AGG_FRAME_LIMIT_DEF);
2807
2808 iwlagn_txq_agg_queue_setup(priv, sta, tid, buf_size);
2809
2810 /*
2811 * If the limit is 0, then it wasn't initialised yet,
2812 * use the default. We can do that since we take the
2813 * minimum below, and we don't want to go above our
2814 * default due to hardware restrictions.
2815 */
2816 if (sta_priv->max_agg_bufsize == 0)
2817 sta_priv->max_agg_bufsize =
2818 LINK_QUAL_AGG_FRAME_LIMIT_DEF;
2819
2820 /*
2821 * Even though in theory the peer could have different
2822 * aggregation reorder buffer sizes for different sessions,
2823 * our ucode doesn't allow for that and has a global limit
2824 * for each station. Therefore, use the minimum of all the
2825 * aggregation sessions and our default value.
2826 */
2827 sta_priv->max_agg_bufsize =
2828 min(sta_priv->max_agg_bufsize, buf_size);
2829
2830 if (priv->cfg->ht_params &&
2831 priv->cfg->ht_params->use_rts_for_aggregation) {
2832 /*
2833 * switch to RTS/CTS if it is the prefer protection
2834 * method for HT traffic
2835 */
2836
2837 sta_priv->lq_sta.lq.general_params.flags |=
2838 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK;
2839 }
2840
2841 sta_priv->lq_sta.lq.agg_params.agg_frame_cnt_limit =
2842 sta_priv->max_agg_bufsize;
2843
2844 iwl_send_lq_cmd(priv, iwl_rxon_ctx_from_vif(vif),
2845 &sta_priv->lq_sta.lq, CMD_ASYNC, false);
2846
2847 IWL_INFO(priv, "Tx aggregation enabled on ra = %pM tid = %d\n",
2848 sta->addr, tid);
2849 ret = 0;
2850 break;
2851 }
2852 mutex_unlock(&priv->mutex);
2853
2854 return ret;
2855 }
2856
2857 static int iwlagn_mac_sta_add(struct ieee80211_hw *hw,
2858 struct ieee80211_vif *vif,
2859 struct ieee80211_sta *sta)
2860 {
2861 struct iwl_priv *priv = hw->priv;
2862 struct iwl_station_priv *sta_priv = (void *)sta->drv_priv;
2863 struct iwl_vif_priv *vif_priv = (void *)vif->drv_priv;
2864 bool is_ap = vif->type == NL80211_IFTYPE_STATION;
2865 int ret;
2866 u8 sta_id;
2867
2868 IWL_DEBUG_INFO(priv, "received request to add station %pM\n",
2869 sta->addr);
2870 mutex_lock(&priv->mutex);
2871 IWL_DEBUG_INFO(priv, "proceeding to add station %pM\n",
2872 sta->addr);
2873 sta_priv->common.sta_id = IWL_INVALID_STATION;
2874
2875 atomic_set(&sta_priv->pending_frames, 0);
2876 if (vif->type == NL80211_IFTYPE_AP)
2877 sta_priv->client = true;
2878
2879 ret = iwl_add_station_common(priv, vif_priv->ctx, sta->addr,
2880 is_ap, sta, &sta_id);
2881 if (ret) {
2882 IWL_ERR(priv, "Unable to add station %pM (%d)\n",
2883 sta->addr, ret);
2884 /* Should we return success if return code is EEXIST ? */
2885 mutex_unlock(&priv->mutex);
2886 return ret;
2887 }
2888
2889 sta_priv->common.sta_id = sta_id;
2890
2891 /* Initialize rate scaling */
2892 IWL_DEBUG_INFO(priv, "Initializing rate scaling for station %pM\n",
2893 sta->addr);
2894 iwl_rs_rate_init(priv, sta, sta_id);
2895 mutex_unlock(&priv->mutex);
2896
2897 return 0;
2898 }
2899
2900 static void iwlagn_mac_channel_switch(struct ieee80211_hw *hw,
2901 struct ieee80211_channel_switch *ch_switch)
2902 {
2903 struct iwl_priv *priv = hw->priv;
2904 const struct iwl_channel_info *ch_info;
2905 struct ieee80211_conf *conf = &hw->conf;
2906 struct ieee80211_channel *channel = ch_switch->channel;
2907 struct iwl_ht_config *ht_conf = &priv->current_ht_config;
2908 /*
2909 * MULTI-FIXME
2910 * When we add support for multiple interfaces, we need to
2911 * revisit this. The channel switch command in the device
2912 * only affects the BSS context, but what does that really
2913 * mean? And what if we get a CSA on the second interface?
2914 * This needs a lot of work.
2915 */
2916 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_BSS];
2917 u16 ch;
2918
2919 IWL_DEBUG_MAC80211(priv, "enter\n");
2920
2921 mutex_lock(&priv->mutex);
2922
2923 if (iwl_is_rfkill(priv))
2924 goto out;
2925
2926 if (test_bit(STATUS_EXIT_PENDING, &priv->status) ||
2927 test_bit(STATUS_SCANNING, &priv->status) ||
2928 test_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status))
2929 goto out;
2930
2931 if (!iwl_is_associated_ctx(ctx))
2932 goto out;
2933
2934 if (!priv->cfg->ops->lib->set_channel_switch)
2935 goto out;
2936
2937 ch = channel->hw_value;
2938 if (le16_to_cpu(ctx->active.channel) == ch)
2939 goto out;
2940
2941 ch_info = iwl_get_channel_info(priv, channel->band, ch);
2942 if (!is_channel_valid(ch_info)) {
2943 IWL_DEBUG_MAC80211(priv, "invalid channel\n");
2944 goto out;
2945 }
2946
2947 spin_lock_irq(&priv->lock);
2948
2949 priv->current_ht_config.smps = conf->smps_mode;
2950
2951 /* Configure HT40 channels */
2952 ctx->ht.enabled = conf_is_ht(conf);
2953 if (ctx->ht.enabled) {
2954 if (conf_is_ht40_minus(conf)) {
2955 ctx->ht.extension_chan_offset =
2956 IEEE80211_HT_PARAM_CHA_SEC_BELOW;
2957 ctx->ht.is_40mhz = true;
2958 } else if (conf_is_ht40_plus(conf)) {
2959 ctx->ht.extension_chan_offset =
2960 IEEE80211_HT_PARAM_CHA_SEC_ABOVE;
2961 ctx->ht.is_40mhz = true;
2962 } else {
2963 ctx->ht.extension_chan_offset =
2964 IEEE80211_HT_PARAM_CHA_SEC_NONE;
2965 ctx->ht.is_40mhz = false;
2966 }
2967 } else
2968 ctx->ht.is_40mhz = false;
2969
2970 if ((le16_to_cpu(ctx->staging.channel) != ch))
2971 ctx->staging.flags = 0;
2972
2973 iwl_set_rxon_channel(priv, channel, ctx);
2974 iwl_set_rxon_ht(priv, ht_conf);
2975 iwl_set_flags_for_band(priv, ctx, channel->band, ctx->vif);
2976
2977 spin_unlock_irq(&priv->lock);
2978
2979 iwl_set_rate(priv);
2980 /*
2981 * at this point, staging_rxon has the
2982 * configuration for channel switch
2983 */
2984 set_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
2985 priv->switch_channel = cpu_to_le16(ch);
2986 if (priv->cfg->ops->lib->set_channel_switch(priv, ch_switch)) {
2987 clear_bit(STATUS_CHANNEL_SWITCH_PENDING, &priv->status);
2988 priv->switch_channel = 0;
2989 ieee80211_chswitch_done(ctx->vif, false);
2990 }
2991
2992 out:
2993 mutex_unlock(&priv->mutex);
2994 IWL_DEBUG_MAC80211(priv, "leave\n");
2995 }
2996
2997 static void iwlagn_configure_filter(struct ieee80211_hw *hw,
2998 unsigned int changed_flags,
2999 unsigned int *total_flags,
3000 u64 multicast)
3001 {
3002 struct iwl_priv *priv = hw->priv;
3003 __le32 filter_or = 0, filter_nand = 0;
3004 struct iwl_rxon_context *ctx;
3005
3006 #define CHK(test, flag) do { \
3007 if (*total_flags & (test)) \
3008 filter_or |= (flag); \
3009 else \
3010 filter_nand |= (flag); \
3011 } while (0)
3012
3013 IWL_DEBUG_MAC80211(priv, "Enter: changed: 0x%x, total: 0x%x\n",
3014 changed_flags, *total_flags);
3015
3016 CHK(FIF_OTHER_BSS | FIF_PROMISC_IN_BSS, RXON_FILTER_PROMISC_MSK);
3017 /* Setting _just_ RXON_FILTER_CTL2HOST_MSK causes FH errors */
3018 CHK(FIF_CONTROL, RXON_FILTER_CTL2HOST_MSK | RXON_FILTER_PROMISC_MSK);
3019 CHK(FIF_BCN_PRBRESP_PROMISC, RXON_FILTER_BCON_AWARE_MSK);
3020
3021 #undef CHK
3022
3023 mutex_lock(&priv->mutex);
3024
3025 for_each_context(priv, ctx) {
3026 ctx->staging.filter_flags &= ~filter_nand;
3027 ctx->staging.filter_flags |= filter_or;
3028
3029 /*
3030 * Not committing directly because hardware can perform a scan,
3031 * but we'll eventually commit the filter flags change anyway.
3032 */
3033 }
3034
3035 mutex_unlock(&priv->mutex);
3036
3037 /*
3038 * Receiving all multicast frames is always enabled by the
3039 * default flags setup in iwl_connection_init_rx_config()
3040 * since we currently do not support programming multicast
3041 * filters into the device.
3042 */
3043 *total_flags &= FIF_OTHER_BSS | FIF_ALLMULTI | FIF_PROMISC_IN_BSS |
3044 FIF_BCN_PRBRESP_PROMISC | FIF_CONTROL;
3045 }
3046
3047 static void iwlagn_mac_flush(struct ieee80211_hw *hw, bool drop)
3048 {
3049 struct iwl_priv *priv = hw->priv;
3050
3051 mutex_lock(&priv->mutex);
3052 IWL_DEBUG_MAC80211(priv, "enter\n");
3053
3054 if (test_bit(STATUS_EXIT_PENDING, &priv->status)) {
3055 IWL_DEBUG_TX(priv, "Aborting flush due to device shutdown\n");
3056 goto done;
3057 }
3058 if (iwl_is_rfkill(priv)) {
3059 IWL_DEBUG_TX(priv, "Aborting flush due to RF Kill\n");
3060 goto done;
3061 }
3062
3063 /*
3064 * mac80211 will not push any more frames for transmit
3065 * until the flush is completed
3066 */
3067 if (drop) {
3068 IWL_DEBUG_MAC80211(priv, "send flush command\n");
3069 if (iwlagn_txfifo_flush(priv, IWL_DROP_ALL)) {
3070 IWL_ERR(priv, "flush request fail\n");
3071 goto done;
3072 }
3073 }
3074 IWL_DEBUG_MAC80211(priv, "wait transmit/flush all frames\n");
3075 iwlagn_wait_tx_queue_empty(priv);
3076 done:
3077 mutex_unlock(&priv->mutex);
3078 IWL_DEBUG_MAC80211(priv, "leave\n");
3079 }
3080
3081 static void iwlagn_disable_roc(struct iwl_priv *priv)
3082 {
3083 struct iwl_rxon_context *ctx = &priv->contexts[IWL_RXON_CTX_PAN];
3084 struct ieee80211_channel *chan = ACCESS_ONCE(priv->hw->conf.channel);
3085
3086 lockdep_assert_held(&priv->mutex);
3087
3088 if (!ctx->is_active)
3089 return;
3090
3091 ctx->staging.dev_type = RXON_DEV_TYPE_2STA;
3092 ctx->staging.filter_flags &= ~RXON_FILTER_ASSOC_MSK;
3093 iwl_set_rxon_channel(priv, chan, ctx);
3094 iwl_set_flags_for_band(priv, ctx, chan->band, NULL);
3095
3096 priv->_agn.hw_roc_channel = NULL;
3097
3098 iwlagn_commit_rxon(priv, ctx);
3099
3100 ctx->is_active = false;
3101 }
3102
3103 static void iwlagn_bg_roc_done(struct work_struct *work)
3104 {
3105 struct iwl_priv *priv = container_of(work, struct iwl_priv,
3106 _agn.hw_roc_work.work);
3107
3108 mutex_lock(&priv->mutex);
3109 ieee80211_remain_on_channel_expired(priv->hw);
3110 iwlagn_disable_roc(priv);
3111 mutex_unlock(&priv->mutex);
3112 }
3113
3114 static int iwl_mac_remain_on_channel(struct ieee80211_hw *hw,
3115 struct ieee80211_channel *channel,
3116 enum nl80211_channel_type channel_type,
3117 int duration)
3118 {
3119 struct iwl_priv *priv = hw->priv;
3120 int err = 0;
3121
3122 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3123 return -EOPNOTSUPP;
3124
3125 if (!(priv->contexts[IWL_RXON_CTX_PAN].interface_modes &
3126 BIT(NL80211_IFTYPE_P2P_CLIENT)))
3127 return -EOPNOTSUPP;
3128
3129 mutex_lock(&priv->mutex);
3130
3131 if (priv->contexts[IWL_RXON_CTX_PAN].is_active ||
3132 test_bit(STATUS_SCAN_HW, &priv->status)) {
3133 err = -EBUSY;
3134 goto out;
3135 }
3136
3137 priv->contexts[IWL_RXON_CTX_PAN].is_active = true;
3138 priv->_agn.hw_roc_channel = channel;
3139 priv->_agn.hw_roc_chantype = channel_type;
3140 priv->_agn.hw_roc_duration = DIV_ROUND_UP(duration * 1000, 1024);
3141 iwlagn_commit_rxon(priv, &priv->contexts[IWL_RXON_CTX_PAN]);
3142 queue_delayed_work(priv->workqueue, &priv->_agn.hw_roc_work,
3143 msecs_to_jiffies(duration + 20));
3144
3145 msleep(IWL_MIN_SLOT_TIME); /* TU is almost ms */
3146 ieee80211_ready_on_channel(priv->hw);
3147
3148 out:
3149 mutex_unlock(&priv->mutex);
3150
3151 return err;
3152 }
3153
3154 static int iwl_mac_cancel_remain_on_channel(struct ieee80211_hw *hw)
3155 {
3156 struct iwl_priv *priv = hw->priv;
3157
3158 if (!(priv->valid_contexts & BIT(IWL_RXON_CTX_PAN)))
3159 return -EOPNOTSUPP;
3160
3161 cancel_delayed_work_sync(&priv->_agn.hw_roc_work);
3162
3163 mutex_lock(&priv->mutex);
3164 iwlagn_disable_roc(priv);
3165 mutex_unlock(&priv->mutex);
3166
3167 return 0;
3168 }
3169
3170 /*****************************************************************************
3171 *
3172 * driver setup and teardown
3173 *
3174 *****************************************************************************/
3175
3176 static void iwl_setup_deferred_work(struct iwl_priv *priv)
3177 {
3178 priv->workqueue = create_singlethread_workqueue(DRV_NAME);
3179
3180 init_waitqueue_head(&priv->wait_command_queue);
3181
3182 INIT_WORK(&priv->restart, iwl_bg_restart);
3183 INIT_WORK(&priv->rx_replenish, iwl_bg_rx_replenish);
3184 INIT_WORK(&priv->beacon_update, iwl_bg_beacon_update);
3185 INIT_WORK(&priv->run_time_calib_work, iwl_bg_run_time_calib_work);
3186 INIT_WORK(&priv->tx_flush, iwl_bg_tx_flush);
3187 INIT_WORK(&priv->bt_full_concurrency, iwl_bg_bt_full_concurrency);
3188 INIT_WORK(&priv->bt_runtime_config, iwl_bg_bt_runtime_config);
3189 INIT_DELAYED_WORK(&priv->_agn.hw_roc_work, iwlagn_bg_roc_done);
3190
3191 iwl_setup_scan_deferred_work(priv);
3192
3193 if (priv->cfg->ops->lib->setup_deferred_work)
3194 priv->cfg->ops->lib->setup_deferred_work(priv);
3195
3196 init_timer(&priv->statistics_periodic);
3197 priv->statistics_periodic.data = (unsigned long)priv;
3198 priv->statistics_periodic.function = iwl_bg_statistics_periodic;
3199
3200 init_timer(&priv->ucode_trace);
3201 priv->ucode_trace.data = (unsigned long)priv;
3202 priv->ucode_trace.function = iwl_bg_ucode_trace;
3203
3204 init_timer(&priv->watchdog);
3205 priv->watchdog.data = (unsigned long)priv;
3206 priv->watchdog.function = iwl_bg_watchdog;
3207
3208 tasklet_init(&priv->irq_tasklet, (void (*)(unsigned long))
3209 iwl_irq_tasklet, (unsigned long)priv);
3210 }
3211
3212 static void iwl_cancel_deferred_work(struct iwl_priv *priv)
3213 {
3214 if (priv->cfg->ops->lib->cancel_deferred_work)
3215 priv->cfg->ops->lib->cancel_deferred_work(priv);
3216
3217 cancel_work_sync(&priv->run_time_calib_work);
3218 cancel_work_sync(&priv->beacon_update);
3219
3220 iwl_cancel_scan_deferred_work(priv);
3221
3222 cancel_work_sync(&priv->bt_full_concurrency);
3223 cancel_work_sync(&priv->bt_runtime_config);
3224
3225 del_timer_sync(&priv->statistics_periodic);
3226 del_timer_sync(&priv->ucode_trace);
3227 }
3228
3229 static void iwl_init_hw_rates(struct iwl_priv *priv,
3230 struct ieee80211_rate *rates)
3231 {
3232 int i;
3233
3234 for (i = 0; i < IWL_RATE_COUNT_LEGACY; i++) {
3235 rates[i].bitrate = iwl_rates[i].ieee * 5;
3236 rates[i].hw_value = i; /* Rate scaling will work on indexes */
3237 rates[i].hw_value_short = i;
3238 rates[i].flags = 0;
3239 if ((i >= IWL_FIRST_CCK_RATE) && (i <= IWL_LAST_CCK_RATE)) {
3240 /*
3241 * If CCK != 1M then set short preamble rate flag.
3242 */
3243 rates[i].flags |=
3244 (iwl_rates[i].plcp == IWL_RATE_1M_PLCP) ?
3245 0 : IEEE80211_RATE_SHORT_PREAMBLE;
3246 }
3247 }
3248 }
3249
3250 static int iwl_init_drv(struct iwl_priv *priv)
3251 {
3252 int ret;
3253
3254 spin_lock_init(&priv->sta_lock);
3255 spin_lock_init(&priv->hcmd_lock);
3256
3257 mutex_init(&priv->mutex);
3258
3259 priv->ieee_channels = NULL;
3260 priv->ieee_rates = NULL;
3261 priv->band = IEEE80211_BAND_2GHZ;
3262
3263 priv->iw_mode = NL80211_IFTYPE_STATION;
3264 priv->current_ht_config.smps = IEEE80211_SMPS_STATIC;
3265 priv->missed_beacon_threshold = IWL_MISSED_BEACON_THRESHOLD_DEF;
3266 priv->_agn.agg_tids_count = 0;
3267
3268 /* initialize force reset */
3269 priv->force_reset[IWL_RF_RESET].reset_duration =
3270 IWL_DELAY_NEXT_FORCE_RF_RESET;
3271 priv->force_reset[IWL_FW_RESET].reset_duration =
3272 IWL_DELAY_NEXT_FORCE_FW_RELOAD;
3273
3274 priv->rx_statistics_jiffies = jiffies;
3275
3276 /* Choose which receivers/antennas to use */
3277 if (priv->cfg->ops->hcmd->set_rxon_chain)
3278 priv->cfg->ops->hcmd->set_rxon_chain(priv,
3279 &priv->contexts[IWL_RXON_CTX_BSS]);
3280
3281 iwl_init_scan_params(priv);
3282
3283 /* init bt coex */
3284 if (priv->cfg->bt_params &&
3285 priv->cfg->bt_params->advanced_bt_coexist) {
3286 priv->kill_ack_mask = IWLAGN_BT_KILL_ACK_MASK_DEFAULT;
3287 priv->kill_cts_mask = IWLAGN_BT_KILL_CTS_MASK_DEFAULT;
3288 priv->bt_valid = IWLAGN_BT_ALL_VALID_MSK;
3289 priv->bt_on_thresh = BT_ON_THRESHOLD_DEF;
3290 priv->bt_duration = BT_DURATION_LIMIT_DEF;
3291 priv->dynamic_frag_thresh = BT_FRAG_THRESHOLD_DEF;
3292 }
3293
3294 ret = iwl_init_channel_map(priv);
3295 if (ret) {
3296 IWL_ERR(priv, "initializing regulatory failed: %d\n", ret);
3297 goto err;
3298 }
3299
3300 ret = iwlcore_init_geos(priv);
3301 if (ret) {
3302 IWL_ERR(priv, "initializing geos failed: %d\n", ret);
3303 goto err_free_channel_map;
3304 }
3305 iwl_init_hw_rates(priv, priv->ieee_rates);
3306
3307 return 0;
3308
3309 err_free_channel_map:
3310 iwl_free_channel_map(priv);
3311 err:
3312 return ret;
3313 }
3314
3315 static void iwl_uninit_drv(struct iwl_priv *priv)
3316 {
3317 iwl_calib_free_results(priv);
3318 iwlcore_free_geos(priv);
3319 iwl_free_channel_map(priv);
3320 kfree(priv->scan_cmd);
3321 kfree(priv->beacon_cmd);
3322 }
3323
3324 struct ieee80211_ops iwlagn_hw_ops = {
3325 .tx = iwlagn_mac_tx,
3326 .start = iwlagn_mac_start,
3327 .stop = iwlagn_mac_stop,
3328 .add_interface = iwl_mac_add_interface,
3329 .remove_interface = iwl_mac_remove_interface,
3330 .change_interface = iwl_mac_change_interface,
3331 .config = iwlagn_mac_config,
3332 .configure_filter = iwlagn_configure_filter,
3333 .set_key = iwlagn_mac_set_key,
3334 .update_tkip_key = iwlagn_mac_update_tkip_key,
3335 .conf_tx = iwl_mac_conf_tx,
3336 .bss_info_changed = iwlagn_bss_info_changed,
3337 .ampdu_action = iwlagn_mac_ampdu_action,
3338 .hw_scan = iwl_mac_hw_scan,
3339 .sta_notify = iwlagn_mac_sta_notify,
3340 .sta_add = iwlagn_mac_sta_add,
3341 .sta_remove = iwl_mac_sta_remove,
3342 .channel_switch = iwlagn_mac_channel_switch,
3343 .flush = iwlagn_mac_flush,
3344 .tx_last_beacon = iwl_mac_tx_last_beacon,
3345 .remain_on_channel = iwl_mac_remain_on_channel,
3346 .cancel_remain_on_channel = iwl_mac_cancel_remain_on_channel,
3347 .offchannel_tx = iwl_mac_offchannel_tx,
3348 .offchannel_tx_cancel_wait = iwl_mac_offchannel_tx_cancel_wait,
3349 CFG80211_TESTMODE_CMD(iwl_testmode_cmd)
3350 CFG80211_TESTMODE_DUMP(iwl_testmode_dump)
3351 };
3352
3353 static u32 iwl_hw_detect(struct iwl_priv *priv)
3354 {
3355 return iwl_read32(priv, CSR_HW_REV);
3356 }
3357
3358 static int iwl_set_hw_params(struct iwl_priv *priv)
3359 {
3360 priv->hw_params.max_rxq_size = RX_QUEUE_SIZE;
3361 priv->hw_params.max_rxq_log = RX_QUEUE_SIZE_LOG;
3362 if (iwlagn_mod_params.amsdu_size_8K)
3363 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_8K);
3364 else
3365 priv->hw_params.rx_page_order = get_order(IWL_RX_BUF_SIZE_4K);
3366
3367 priv->hw_params.max_beacon_itrvl = IWL_MAX_UCODE_BEACON_INTERVAL;
3368
3369 if (iwlagn_mod_params.disable_11n)
3370 priv->cfg->sku &= ~EEPROM_SKU_CAP_11N_ENABLE;
3371
3372 /* Device-specific setup */
3373 return priv->cfg->ops->lib->set_hw_params(priv);
3374 }
3375
3376 static const u8 iwlagn_bss_ac_to_fifo[] = {
3377 IWL_TX_FIFO_VO,
3378 IWL_TX_FIFO_VI,
3379 IWL_TX_FIFO_BE,
3380 IWL_TX_FIFO_BK,
3381 };
3382
3383 static const u8 iwlagn_bss_ac_to_queue[] = {
3384 0, 1, 2, 3,
3385 };
3386
3387 static const u8 iwlagn_pan_ac_to_fifo[] = {
3388 IWL_TX_FIFO_VO_IPAN,
3389 IWL_TX_FIFO_VI_IPAN,
3390 IWL_TX_FIFO_BE_IPAN,
3391 IWL_TX_FIFO_BK_IPAN,
3392 };
3393
3394 static const u8 iwlagn_pan_ac_to_queue[] = {
3395 7, 6, 5, 4,
3396 };
3397
3398 /* This function both allocates and initializes hw and priv. */
3399 static struct ieee80211_hw *iwl_alloc_all(struct iwl_cfg *cfg)
3400 {
3401 struct iwl_priv *priv;
3402 /* mac80211 allocates memory for this device instance, including
3403 * space for this driver's private structure */
3404 struct ieee80211_hw *hw;
3405
3406 hw = ieee80211_alloc_hw(sizeof(struct iwl_priv), &iwlagn_hw_ops);
3407 if (hw == NULL) {
3408 pr_err("%s: Can not allocate network device\n",
3409 cfg->name);
3410 goto out;
3411 }
3412
3413 priv = hw->priv;
3414 priv->hw = hw;
3415
3416 out:
3417 return hw;
3418 }
3419
3420 static void iwl_init_context(struct iwl_priv *priv)
3421 {
3422 int i;
3423
3424 /*
3425 * The default context is always valid,
3426 * more may be discovered when firmware
3427 * is loaded.
3428 */
3429 priv->valid_contexts = BIT(IWL_RXON_CTX_BSS);
3430
3431 for (i = 0; i < NUM_IWL_RXON_CTX; i++)
3432 priv->contexts[i].ctxid = i;
3433
3434 priv->contexts[IWL_RXON_CTX_BSS].always_active = true;
3435 priv->contexts[IWL_RXON_CTX_BSS].is_active = true;
3436 priv->contexts[IWL_RXON_CTX_BSS].rxon_cmd = REPLY_RXON;
3437 priv->contexts[IWL_RXON_CTX_BSS].rxon_timing_cmd = REPLY_RXON_TIMING;
3438 priv->contexts[IWL_RXON_CTX_BSS].rxon_assoc_cmd = REPLY_RXON_ASSOC;
3439 priv->contexts[IWL_RXON_CTX_BSS].qos_cmd = REPLY_QOS_PARAM;
3440 priv->contexts[IWL_RXON_CTX_BSS].ap_sta_id = IWL_AP_ID;
3441 priv->contexts[IWL_RXON_CTX_BSS].wep_key_cmd = REPLY_WEPKEY;
3442 priv->contexts[IWL_RXON_CTX_BSS].ac_to_fifo = iwlagn_bss_ac_to_fifo;
3443 priv->contexts[IWL_RXON_CTX_BSS].ac_to_queue = iwlagn_bss_ac_to_queue;
3444 priv->contexts[IWL_RXON_CTX_BSS].exclusive_interface_modes =
3445 BIT(NL80211_IFTYPE_ADHOC);
3446 priv->contexts[IWL_RXON_CTX_BSS].interface_modes =
3447 BIT(NL80211_IFTYPE_STATION);
3448 priv->contexts[IWL_RXON_CTX_BSS].ap_devtype = RXON_DEV_TYPE_AP;
3449 priv->contexts[IWL_RXON_CTX_BSS].ibss_devtype = RXON_DEV_TYPE_IBSS;
3450 priv->contexts[IWL_RXON_CTX_BSS].station_devtype = RXON_DEV_TYPE_ESS;
3451 priv->contexts[IWL_RXON_CTX_BSS].unused_devtype = RXON_DEV_TYPE_ESS;
3452
3453 priv->contexts[IWL_RXON_CTX_PAN].rxon_cmd = REPLY_WIPAN_RXON;
3454 priv->contexts[IWL_RXON_CTX_PAN].rxon_timing_cmd =
3455 REPLY_WIPAN_RXON_TIMING;
3456 priv->contexts[IWL_RXON_CTX_PAN].rxon_assoc_cmd =
3457 REPLY_WIPAN_RXON_ASSOC;
3458 priv->contexts[IWL_RXON_CTX_PAN].qos_cmd = REPLY_WIPAN_QOS_PARAM;
3459 priv->contexts[IWL_RXON_CTX_PAN].ap_sta_id = IWL_AP_ID_PAN;
3460 priv->contexts[IWL_RXON_CTX_PAN].wep_key_cmd = REPLY_WIPAN_WEPKEY;
3461 priv->contexts[IWL_RXON_CTX_PAN].bcast_sta_id = IWLAGN_PAN_BCAST_ID;
3462 priv->contexts[IWL_RXON_CTX_PAN].station_flags = STA_FLG_PAN_STATION;
3463 priv->contexts[IWL_RXON_CTX_PAN].ac_to_fifo = iwlagn_pan_ac_to_fifo;
3464 priv->contexts[IWL_RXON_CTX_PAN].ac_to_queue = iwlagn_pan_ac_to_queue;
3465 priv->contexts[IWL_RXON_CTX_PAN].mcast_queue = IWL_IPAN_MCAST_QUEUE;
3466 priv->contexts[IWL_RXON_CTX_PAN].interface_modes =
3467 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_AP);
3468 #ifdef CONFIG_IWL_P2P
3469 priv->contexts[IWL_RXON_CTX_PAN].interface_modes |=
3470 BIT(NL80211_IFTYPE_P2P_CLIENT) | BIT(NL80211_IFTYPE_P2P_GO);
3471 #endif
3472 priv->contexts[IWL_RXON_CTX_PAN].ap_devtype = RXON_DEV_TYPE_CP;
3473 priv->contexts[IWL_RXON_CTX_PAN].station_devtype = RXON_DEV_TYPE_2STA;
3474 priv->contexts[IWL_RXON_CTX_PAN].unused_devtype = RXON_DEV_TYPE_P2P;
3475
3476 BUILD_BUG_ON(NUM_IWL_RXON_CTX != 2);
3477 }
3478
3479 int iwl_probe(void *bus_specific, struct iwl_bus_ops *bus_ops,
3480 struct iwl_cfg *cfg)
3481 {
3482 int err = 0;
3483 struct iwl_priv *priv;
3484 struct ieee80211_hw *hw;
3485 u16 num_mac;
3486 u32 hw_rev;
3487
3488 /************************
3489 * 1. Allocating HW data
3490 ************************/
3491 /* TODO: remove this nasty hack when PCI encapsulation is done
3492 * assumes that struct pci_dev * is at the very beginning of whatever
3493 * is pointed by bus_specific */
3494 unsigned long *ppdev = bus_specific;
3495 struct pci_dev *pdev = (struct pci_dev *) *ppdev;
3496
3497 hw = iwl_alloc_all(cfg);
3498 if (!hw) {
3499 err = -ENOMEM;
3500 goto out; }
3501 priv = hw->priv;
3502
3503 priv->bus.priv = priv;
3504 priv->bus.bus_specific = bus_specific;
3505 priv->bus.ops = bus_ops;
3506 priv->bus.ops->set_drv_data(&priv->bus, priv);
3507 priv->bus.dev = priv->bus.ops->get_dev(&priv->bus);
3508
3509 /* At this point both hw and priv are allocated. */
3510
3511 SET_IEEE80211_DEV(hw, priv->bus.dev);
3512
3513 IWL_DEBUG_INFO(priv, "*** LOAD DRIVER ***\n");
3514 priv->cfg = cfg;
3515 priv->pci_dev = pdev;
3516 priv->inta_mask = CSR_INI_SET_MASK;
3517
3518 /* is antenna coupling more than 35dB ? */
3519 priv->bt_ant_couple_ok =
3520 (iwlagn_ant_coupling > IWL_BT_ANTENNA_COUPLING_THRESHOLD) ?
3521 true : false;
3522
3523 /* enable/disable bt channel inhibition */
3524 priv->bt_ch_announce = iwlagn_bt_ch_announce;
3525 IWL_DEBUG_INFO(priv, "BT channel inhibition is %s\n",
3526 (priv->bt_ch_announce) ? "On" : "Off");
3527
3528 if (iwl_alloc_traffic_mem(priv))
3529 IWL_ERR(priv, "Not enough memory to generate traffic log\n");
3530
3531
3532 /* these spin locks will be used in apm_ops.init and EEPROM access
3533 * we should init now
3534 */
3535 spin_lock_init(&priv->reg_lock);
3536 spin_lock_init(&priv->lock);
3537
3538 /*
3539 * stop and reset the on-board processor just in case it is in a
3540 * strange state ... like being left stranded by a primary kernel
3541 * and this is now the kdump kernel trying to start up
3542 */
3543 iwl_write32(priv, CSR_RESET, CSR_RESET_REG_FLAG_NEVO_RESET);
3544
3545 /***********************
3546 * 3. Read REV register
3547 ***********************/
3548 hw_rev = iwl_hw_detect(priv);
3549 IWL_INFO(priv, "Detected %s, REV=0x%X\n",
3550 priv->cfg->name, hw_rev);
3551
3552 if (iwl_prepare_card_hw(priv)) {
3553 IWL_WARN(priv, "Failed, HW not ready\n");
3554 goto out_free_traffic_mem;
3555 }
3556
3557 /*****************
3558 * 4. Read EEPROM
3559 *****************/
3560 /* Read the EEPROM */
3561 err = iwl_eeprom_init(priv, hw_rev);
3562 if (err) {
3563 IWL_ERR(priv, "Unable to init EEPROM\n");
3564 goto out_free_traffic_mem;
3565 }
3566 err = iwl_eeprom_check_version(priv);
3567 if (err)
3568 goto out_free_eeprom;
3569
3570 err = iwl_eeprom_check_sku(priv);
3571 if (err)
3572 goto out_free_eeprom;
3573
3574 /* extract MAC Address */
3575 iwl_eeprom_get_mac(priv, priv->addresses[0].addr);
3576 IWL_DEBUG_INFO(priv, "MAC address: %pM\n", priv->addresses[0].addr);
3577 priv->hw->wiphy->addresses = priv->addresses;
3578 priv->hw->wiphy->n_addresses = 1;
3579 num_mac = iwl_eeprom_query16(priv, EEPROM_NUM_MAC_ADDRESS);
3580 if (num_mac > 1) {
3581 memcpy(priv->addresses[1].addr, priv->addresses[0].addr,
3582 ETH_ALEN);
3583 priv->addresses[1].addr[5]++;
3584 priv->hw->wiphy->n_addresses++;
3585 }
3586
3587 /* initialize all valid contexts */
3588 iwl_init_context(priv);
3589
3590 /************************
3591 * 5. Setup HW constants
3592 ************************/
3593 if (iwl_set_hw_params(priv)) {
3594 err = -ENOENT;
3595 IWL_ERR(priv, "failed to set hw parameters\n");
3596 goto out_free_eeprom;
3597 }
3598
3599 /*******************
3600 * 6. Setup priv
3601 *******************/
3602
3603 err = iwl_init_drv(priv);
3604 if (err)
3605 goto out_free_eeprom;
3606 /* At this point both hw and priv are initialized. */
3607
3608 /********************
3609 * 7. Setup services
3610 ********************/
3611 iwl_alloc_isr_ict(priv);
3612
3613 err = request_irq(priv->pci_dev->irq, iwl_isr_ict,
3614 IRQF_SHARED, DRV_NAME, priv);
3615 if (err) {
3616 IWL_ERR(priv, "Error allocating IRQ %d\n", priv->pci_dev->irq);
3617 goto out_uninit_drv;
3618 }
3619
3620 iwl_setup_deferred_work(priv);
3621 iwl_setup_rx_handlers(priv);
3622 iwl_testmode_init(priv);
3623
3624 /*********************************************
3625 * 8. Enable interrupts
3626 *********************************************/
3627
3628 iwl_enable_rfkill_int(priv);
3629
3630 /* If platform's RF_KILL switch is NOT set to KILL */
3631 if (iwl_read32(priv, CSR_GP_CNTRL) & CSR_GP_CNTRL_REG_FLAG_HW_RF_KILL_SW)
3632 clear_bit(STATUS_RF_KILL_HW, &priv->status);
3633 else
3634 set_bit(STATUS_RF_KILL_HW, &priv->status);
3635
3636 wiphy_rfkill_set_hw_state(priv->hw->wiphy,
3637 test_bit(STATUS_RF_KILL_HW, &priv->status));
3638
3639 iwl_power_initialize(priv);
3640 iwl_tt_initialize(priv);
3641
3642 init_completion(&priv->_agn.firmware_loading_complete);
3643
3644 err = iwl_request_firmware(priv, true);
3645 if (err)
3646 goto out_destroy_workqueue;
3647
3648 return 0;
3649
3650 out_destroy_workqueue:
3651 destroy_workqueue(priv->workqueue);
3652 priv->workqueue = NULL;
3653 free_irq(priv->pci_dev->irq, priv);
3654 iwl_free_isr_ict(priv);
3655 out_uninit_drv:
3656 iwl_uninit_drv(priv);
3657 out_free_eeprom:
3658 iwl_eeprom_free(priv);
3659 out_free_traffic_mem:
3660 iwl_free_traffic_mem(priv);
3661 ieee80211_free_hw(priv->hw);
3662 out:
3663 return err;
3664 }
3665
3666 void __devexit iwl_remove(struct iwl_priv * priv)
3667 {
3668 unsigned long flags;
3669
3670 wait_for_completion(&priv->_agn.firmware_loading_complete);
3671
3672 IWL_DEBUG_INFO(priv, "*** UNLOAD DRIVER ***\n");
3673
3674 iwl_dbgfs_unregister(priv);
3675 sysfs_remove_group(&priv->bus.dev->kobj,
3676 &iwl_attribute_group);
3677
3678 /* ieee80211_unregister_hw call wil cause iwl_mac_stop to
3679 * to be called and iwl_down since we are removing the device
3680 * we need to set STATUS_EXIT_PENDING bit.
3681 */
3682 set_bit(STATUS_EXIT_PENDING, &priv->status);
3683
3684 iwl_testmode_cleanup(priv);
3685 iwl_leds_exit(priv);
3686
3687 if (priv->mac80211_registered) {
3688 ieee80211_unregister_hw(priv->hw);
3689 priv->mac80211_registered = 0;
3690 }
3691
3692 /* Reset to low power before unloading driver. */
3693 iwl_apm_stop(priv);
3694
3695 iwl_tt_exit(priv);
3696
3697 /* make sure we flush any pending irq or
3698 * tasklet for the driver
3699 */
3700 spin_lock_irqsave(&priv->lock, flags);
3701 iwl_disable_interrupts(priv);
3702 spin_unlock_irqrestore(&priv->lock, flags);
3703
3704 iwl_synchronize_irq(priv);
3705
3706 iwl_dealloc_ucode(priv);
3707
3708 if (priv->rxq.bd)
3709 iwlagn_rx_queue_free(priv, &priv->rxq);
3710 iwlagn_hw_txq_ctx_free(priv);
3711
3712 iwl_eeprom_free(priv);
3713
3714
3715 /*netif_stop_queue(dev); */
3716 flush_workqueue(priv->workqueue);
3717
3718 /* ieee80211_unregister_hw calls iwl_mac_stop, which flushes
3719 * priv->workqueue... so we can't take down the workqueue
3720 * until now... */
3721 destroy_workqueue(priv->workqueue);
3722 priv->workqueue = NULL;
3723 iwl_free_traffic_mem(priv);
3724
3725 free_irq(priv->pci_dev->irq, priv);
3726 priv->bus.ops->set_drv_data(&priv->bus, NULL);
3727
3728 iwl_uninit_drv(priv);
3729
3730 iwl_free_isr_ict(priv);
3731
3732 dev_kfree_skb(priv->beacon_skb);
3733
3734 ieee80211_free_hw(priv->hw);
3735 }
3736
3737
3738 /*****************************************************************************
3739 *
3740 * driver and module entry point
3741 *
3742 *****************************************************************************/
3743 static int __init iwl_init(void)
3744 {
3745
3746 int ret;
3747 pr_info(DRV_DESCRIPTION ", " DRV_VERSION "\n");
3748 pr_info(DRV_COPYRIGHT "\n");
3749
3750 ret = iwlagn_rate_control_register();
3751 if (ret) {
3752 pr_err("Unable to register rate control algorithm: %d\n", ret);
3753 return ret;
3754 }
3755
3756 ret = iwl_pci_register_driver();
3757
3758 if (ret)
3759 goto error_register;
3760 return ret;
3761
3762 error_register:
3763 iwlagn_rate_control_unregister();
3764 return ret;
3765 }
3766
3767 static void __exit iwl_exit(void)
3768 {
3769 iwl_pci_unregister_driver();
3770 iwlagn_rate_control_unregister();
3771 }
3772
3773 module_exit(iwl_exit);
3774 module_init(iwl_init);
3775
3776 #ifdef CONFIG_IWLWIFI_DEBUG
3777 module_param_named(debug, iwl_debug_level, uint, S_IRUGO | S_IWUSR);
3778 MODULE_PARM_DESC(debug, "debug output mask");
3779 #endif
3780
3781 module_param_named(swcrypto, iwlagn_mod_params.sw_crypto, int, S_IRUGO);
3782 MODULE_PARM_DESC(swcrypto, "using crypto in software (default 0 [hardware])");
3783 module_param_named(queues_num, iwlagn_mod_params.num_of_queues, int, S_IRUGO);
3784 MODULE_PARM_DESC(queues_num, "number of hw queues.");
3785 module_param_named(11n_disable, iwlagn_mod_params.disable_11n, int, S_IRUGO);
3786 MODULE_PARM_DESC(11n_disable, "disable 11n functionality");
3787 module_param_named(amsdu_size_8K, iwlagn_mod_params.amsdu_size_8K,
3788 int, S_IRUGO);
3789 MODULE_PARM_DESC(amsdu_size_8K, "enable 8K amsdu size");
3790 module_param_named(fw_restart, iwlagn_mod_params.restart_fw, int, S_IRUGO);
3791 MODULE_PARM_DESC(fw_restart, "restart firmware in case of error");
3792
3793 module_param_named(ucode_alternative, iwlagn_wanted_ucode_alternative, int,
3794 S_IRUGO);
3795 MODULE_PARM_DESC(ucode_alternative,
3796 "specify ucode alternative to use from ucode file");
3797
3798 module_param_named(antenna_coupling, iwlagn_ant_coupling, int, S_IRUGO);
3799 MODULE_PARM_DESC(antenna_coupling,
3800 "specify antenna coupling in dB (defualt: 0 dB)");
3801
3802 module_param_named(bt_ch_inhibition, iwlagn_bt_ch_announce, bool, S_IRUGO);
3803 MODULE_PARM_DESC(bt_ch_inhibition,
3804 "Disable BT channel inhibition (default: enable)");
3805
3806 module_param_named(plcp_check, iwlagn_mod_params.plcp_check, bool, S_IRUGO);
3807 MODULE_PARM_DESC(plcp_check, "Check plcp health (default: 1 [enabled])");
3808
3809 module_param_named(ack_check, iwlagn_mod_params.ack_check, bool, S_IRUGO);
3810 MODULE_PARM_DESC(ack_check, "Check ack health (default: 0 [disabled])");
3811
3812 /*
3813 * set bt_coex_active to true, uCode will do kill/defer
3814 * every time the priority line is asserted (BT is sending signals on the
3815 * priority line in the PCIx).
3816 * set bt_coex_active to false, uCode will ignore the BT activity and
3817 * perform the normal operation
3818 *
3819 * User might experience transmit issue on some platform due to WiFi/BT
3820 * co-exist problem. The possible behaviors are:
3821 * Able to scan and finding all the available AP
3822 * Not able to associate with any AP
3823 * On those platforms, WiFi communication can be restored by set
3824 * "bt_coex_active" module parameter to "false"
3825 *
3826 * default: bt_coex_active = true (BT_COEX_ENABLE)
3827 */
3828 module_param_named(bt_coex_active, iwlagn_mod_params.bt_coex_active,
3829 bool, S_IRUGO);
3830 MODULE_PARM_DESC(bt_coex_active, "enable wifi/bt co-exist (default: enable)");
3831
3832 module_param_named(led_mode, iwlagn_mod_params.led_mode, int, S_IRUGO);
3833 MODULE_PARM_DESC(led_mode, "0=system default, "
3834 "1=On(RF On)/Off(RF Off), 2=blinking (default: 0)");
3835
3836 /*
3837 * For now, keep using power level 1 instead of automatically
3838 * adjusting ...
3839 */
3840 module_param_named(no_sleep_autoadjust, iwlagn_mod_params.no_sleep_autoadjust,
3841 bool, S_IRUGO);
3842 MODULE_PARM_DESC(no_sleep_autoadjust,
3843 "don't automatically adjust sleep level "
3844 "according to maximum network latency (default: true)");
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree