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iwlwifi: mvm: prepare for station count change
[linux-2.6/btrfs-unstable.git] / drivers / net / wireless / intel / iwlwifi / mvm / utils.c
blob3054945b949abec69311576002a1eab8b03c609f
1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
38 * All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
49 * distribution.
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67 #include <net/mac80211.h>
68
69 #include "iwl-debug.h"
70 #include "iwl-io.h"
71 #include "iwl-prph.h"
72 #include "fw-dbg.h"
73 #include "mvm.h"
74 #include "fw-api-rs.h"
75
76 /*
77 * Will return 0 even if the cmd failed when RFKILL is asserted unless
78 * CMD_WANT_SKB is set in cmd->flags.
79 */
80 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
81 {
82 int ret;
83
84 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
85 if (WARN_ON(mvm->d3_test_active))
86 return -EIO;
87 #endif
88
89 /*
90 * Synchronous commands from this op-mode must hold
91 * the mutex, this ensures we don't try to send two
92 * (or more) synchronous commands at a time.
93 */
94 if (!(cmd->flags & CMD_ASYNC)) {
95 lockdep_assert_held(&mvm->mutex);
96 if (!(cmd->flags & CMD_SEND_IN_IDLE))
97 iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD);
98 }
99
100 ret = iwl_trans_send_cmd(mvm->trans, cmd);
101
102 if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE)))
103 iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_CMD);
104
105 /*
106 * If the caller wants the SKB, then don't hide any problems, the
107 * caller might access the response buffer which will be NULL if
108 * the command failed.
109 */
110 if (cmd->flags & CMD_WANT_SKB)
111 return ret;
112
113 /* Silently ignore failures if RFKILL is asserted */
114 if (!ret || ret == -ERFKILL)
115 return 0;
116 return ret;
117 }
118
119 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
120 u32 flags, u16 len, const void *data)
121 {
122 struct iwl_host_cmd cmd = {
123 .id = id,
124 .len = { len, },
125 .data = { data, },
126 .flags = flags,
127 };
128
129 return iwl_mvm_send_cmd(mvm, &cmd);
130 }
131
132 /*
133 * We assume that the caller set the status to the success value
134 */
135 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
136 u32 *status)
137 {
138 struct iwl_rx_packet *pkt;
139 struct iwl_cmd_response *resp;
140 int ret, resp_len;
141
142 lockdep_assert_held(&mvm->mutex);
143
144 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
145 if (WARN_ON(mvm->d3_test_active))
146 return -EIO;
147 #endif
148
149 /*
150 * Only synchronous commands can wait for status,
151 * we use WANT_SKB so the caller can't.
152 */
153 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
154 "cmd flags %x", cmd->flags))
155 return -EINVAL;
156
157 cmd->flags |= CMD_WANT_SKB;
158
159 ret = iwl_trans_send_cmd(mvm->trans, cmd);
160 if (ret == -ERFKILL) {
161 /*
162 * The command failed because of RFKILL, don't update
163 * the status, leave it as success and return 0.
164 */
165 return 0;
166 } else if (ret) {
167 return ret;
168 }
169
170 pkt = cmd->resp_pkt;
171 /* Can happen if RFKILL is asserted */
172 if (!pkt) {
173 ret = 0;
174 goto out_free_resp;
175 }
176
177 resp_len = iwl_rx_packet_payload_len(pkt);
178 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
179 ret = -EIO;
180 goto out_free_resp;
181 }
182
183 resp = (void *)pkt->data;
184 *status = le32_to_cpu(resp->status);
185 out_free_resp:
186 iwl_free_resp(cmd);
187 return ret;
188 }
189
190 /*
191 * We assume that the caller set the status to the sucess value
192 */
193 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
194 const void *data, u32 *status)
195 {
196 struct iwl_host_cmd cmd = {
197 .id = id,
198 .len = { len, },
199 .data = { data, },
200 };
201
202 return iwl_mvm_send_cmd_status(mvm, &cmd, status);
203 }
204
205 #define IWL_DECLARE_RATE_INFO(r) \
206 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
207
208 /*
209 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
210 */
211 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
212 IWL_DECLARE_RATE_INFO(1),
213 IWL_DECLARE_RATE_INFO(2),
214 IWL_DECLARE_RATE_INFO(5),
215 IWL_DECLARE_RATE_INFO(11),
216 IWL_DECLARE_RATE_INFO(6),
217 IWL_DECLARE_RATE_INFO(9),
218 IWL_DECLARE_RATE_INFO(12),
219 IWL_DECLARE_RATE_INFO(18),
220 IWL_DECLARE_RATE_INFO(24),
221 IWL_DECLARE_RATE_INFO(36),
222 IWL_DECLARE_RATE_INFO(48),
223 IWL_DECLARE_RATE_INFO(54),
224 };
225
226 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
227 enum nl80211_band band)
228 {
229 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
230 int idx;
231 int band_offset = 0;
232
233 /* Legacy rate format, search for match in table */
234 if (band == NL80211_BAND_5GHZ)
235 band_offset = IWL_FIRST_OFDM_RATE;
236 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
237 if (fw_rate_idx_to_plcp[idx] == rate)
238 return idx - band_offset;
239
240 return -1;
241 }
242
243 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
244 {
245 /* Get PLCP rate for tx_cmd->rate_n_flags */
246 return fw_rate_idx_to_plcp[rate_idx];
247 }
248
249 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
250 {
251 struct iwl_rx_packet *pkt = rxb_addr(rxb);
252 struct iwl_error_resp *err_resp = (void *)pkt->data;
253
254 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
255 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
256 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
257 le16_to_cpu(err_resp->bad_cmd_seq_num),
258 le32_to_cpu(err_resp->error_service));
259 IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
260 le64_to_cpu(err_resp->timestamp));
261 }
262
263 /*
264 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
265 * The parameter should also be a combination of ANT_[ABC].
266 */
267 u8 first_antenna(u8 mask)
268 {
269 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
270 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
271 return BIT(0);
272 return BIT(ffs(mask) - 1);
273 }
274
275 /*
276 * Toggles between TX antennas to send the probe request on.
277 * Receives the bitmask of valid TX antennas and the *index* used
278 * for the last TX, and returns the next valid *index* to use.
279 * In order to set it in the tx_cmd, must do BIT(idx).
280 */
281 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
282 {
283 u8 ind = last_idx;
284 int i;
285
286 for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
287 ind = (ind + 1) % RATE_MCS_ANT_NUM;
288 if (valid & BIT(ind))
289 return ind;
290 }
291
292 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
293 return last_idx;
294 }
295
296 static const struct {
297 const char *name;
298 u8 num;
299 } advanced_lookup[] = {
300 { "NMI_INTERRUPT_WDG", 0x34 },
301 { "SYSASSERT", 0x35 },
302 { "UCODE_VERSION_MISMATCH", 0x37 },
303 { "BAD_COMMAND", 0x38 },
304 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
305 { "FATAL_ERROR", 0x3D },
306 { "NMI_TRM_HW_ERR", 0x46 },
307 { "NMI_INTERRUPT_TRM", 0x4C },
308 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
309 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
310 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
311 { "NMI_INTERRUPT_HOST", 0x66 },
312 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
313 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
314 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
315 { "ADVANCED_SYSASSERT", 0 },
316 };
317
318 static const char *desc_lookup(u32 num)
319 {
320 int i;
321
322 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
323 if (advanced_lookup[i].num == num)
324 return advanced_lookup[i].name;
325
326 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
327 return advanced_lookup[i].name;
328 }
329
330 /*
331 * Note: This structure is read from the device with IO accesses,
332 * and the reading already does the endian conversion. As it is
333 * read with u32-sized accesses, any members with a different size
334 * need to be ordered correctly though!
335 */
336 struct iwl_error_event_table_v1 {
337 u32 valid; /* (nonzero) valid, (0) log is empty */
338 u32 error_id; /* type of error */
339 u32 pc; /* program counter */
340 u32 blink1; /* branch link */
341 u32 blink2; /* branch link */
342 u32 ilink1; /* interrupt link */
343 u32 ilink2; /* interrupt link */
344 u32 data1; /* error-specific data */
345 u32 data2; /* error-specific data */
346 u32 data3; /* error-specific data */
347 u32 bcon_time; /* beacon timer */
348 u32 tsf_low; /* network timestamp function timer */
349 u32 tsf_hi; /* network timestamp function timer */
350 u32 gp1; /* GP1 timer register */
351 u32 gp2; /* GP2 timer register */
352 u32 gp3; /* GP3 timer register */
353 u32 ucode_ver; /* uCode version */
354 u32 hw_ver; /* HW Silicon version */
355 u32 brd_ver; /* HW board version */
356 u32 log_pc; /* log program counter */
357 u32 frame_ptr; /* frame pointer */
358 u32 stack_ptr; /* stack pointer */
359 u32 hcmd; /* last host command header */
360 u32 isr0; /* isr status register LMPM_NIC_ISR0:
361 * rxtx_flag */
362 u32 isr1; /* isr status register LMPM_NIC_ISR1:
363 * host_flag */
364 u32 isr2; /* isr status register LMPM_NIC_ISR2:
365 * enc_flag */
366 u32 isr3; /* isr status register LMPM_NIC_ISR3:
367 * time_flag */
368 u32 isr4; /* isr status register LMPM_NIC_ISR4:
369 * wico interrupt */
370 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */
371 u32 wait_event; /* wait event() caller address */
372 u32 l2p_control; /* L2pControlField */
373 u32 l2p_duration; /* L2pDurationField */
374 u32 l2p_mhvalid; /* L2pMhValidBits */
375 u32 l2p_addr_match; /* L2pAddrMatchStat */
376 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
377 * (LMPM_PMG_SEL) */
378 u32 u_timestamp; /* indicate when the date and time of the
379 * compilation */
380 u32 flow_handler; /* FH read/write pointers, RX credit */
381 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;
382
383 struct iwl_error_event_table {
384 u32 valid; /* (nonzero) valid, (0) log is empty */
385 u32 error_id; /* type of error */
386 u32 trm_hw_status0; /* TRM HW status */
387 u32 trm_hw_status1; /* TRM HW status */
388 u32 blink2; /* branch link */
389 u32 ilink1; /* interrupt link */
390 u32 ilink2; /* interrupt link */
391 u32 data1; /* error-specific data */
392 u32 data2; /* error-specific data */
393 u32 data3; /* error-specific data */
394 u32 bcon_time; /* beacon timer */
395 u32 tsf_low; /* network timestamp function timer */
396 u32 tsf_hi; /* network timestamp function timer */
397 u32 gp1; /* GP1 timer register */
398 u32 gp2; /* GP2 timer register */
399 u32 fw_rev_type; /* firmware revision type */
400 u32 major; /* uCode version major */
401 u32 minor; /* uCode version minor */
402 u32 hw_ver; /* HW Silicon version */
403 u32 brd_ver; /* HW board version */
404 u32 log_pc; /* log program counter */
405 u32 frame_ptr; /* frame pointer */
406 u32 stack_ptr; /* stack pointer */
407 u32 hcmd; /* last host command header */
408 u32 isr0; /* isr status register LMPM_NIC_ISR0:
409 * rxtx_flag */
410 u32 isr1; /* isr status register LMPM_NIC_ISR1:
411 * host_flag */
412 u32 isr2; /* isr status register LMPM_NIC_ISR2:
413 * enc_flag */
414 u32 isr3; /* isr status register LMPM_NIC_ISR3:
415 * time_flag */
416 u32 isr4; /* isr status register LMPM_NIC_ISR4:
417 * wico interrupt */
418 u32 last_cmd_id; /* last HCMD id handled by the firmware */
419 u32 wait_event; /* wait event() caller address */
420 u32 l2p_control; /* L2pControlField */
421 u32 l2p_duration; /* L2pDurationField */
422 u32 l2p_mhvalid; /* L2pMhValidBits */
423 u32 l2p_addr_match; /* L2pAddrMatchStat */
424 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
425 * (LMPM_PMG_SEL) */
426 u32 u_timestamp; /* indicate when the date and time of the
427 * compilation */
428 u32 flow_handler; /* FH read/write pointers, RX credit */
429 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */;
430
431 /*
432 * UMAC error struct - relevant starting from family 8000 chip.
433 * Note: This structure is read from the device with IO accesses,
434 * and the reading already does the endian conversion. As it is
435 * read with u32-sized accesses, any members with a different size
436 * need to be ordered correctly though!
437 */
438 struct iwl_umac_error_event_table {
439 u32 valid; /* (nonzero) valid, (0) log is empty */
440 u32 error_id; /* type of error */
441 u32 blink1; /* branch link */
442 u32 blink2; /* branch link */
443 u32 ilink1; /* interrupt link */
444 u32 ilink2; /* interrupt link */
445 u32 data1; /* error-specific data */
446 u32 data2; /* error-specific data */
447 u32 data3; /* error-specific data */
448 u32 umac_major;
449 u32 umac_minor;
450 u32 frame_pointer; /* core register 27*/
451 u32 stack_pointer; /* core register 28 */
452 u32 cmd_header; /* latest host cmd sent to UMAC */
453 u32 nic_isr_pref; /* ISR status register */
454 } __packed;
455
456 #define ERROR_START_OFFSET (1 * sizeof(u32))
457 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
458
459 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
460 {
461 struct iwl_trans *trans = mvm->trans;
462 struct iwl_umac_error_event_table table;
463 u32 base;
464
465 base = mvm->umac_error_event_table;
466
467 if (base < 0x800000) {
468 IWL_ERR(mvm,
469 "Not valid error log pointer 0x%08X for %s uCode\n",
470 base,
471 (mvm->cur_ucode == IWL_UCODE_INIT)
472 ? "Init" : "RT");
473 return;
474 }
475
476 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
477
478 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
479 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
480 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
481 mvm->status, table.valid);
482 }
483
484 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
485 desc_lookup(table.error_id));
486 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
487 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
488 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
489 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
490 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
491 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
492 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
493 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
494 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
495 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
496 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
497 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
498 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
499 }
500
501 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u32 base)
502 {
503 struct iwl_trans *trans = mvm->trans;
504 struct iwl_error_event_table table;
505
506 if (mvm->cur_ucode == IWL_UCODE_INIT) {
507 if (!base)
508 base = mvm->fw->init_errlog_ptr;
509 } else {
510 if (!base)
511 base = mvm->fw->inst_errlog_ptr;
512 }
513
514 if (base < 0x400000) {
515 IWL_ERR(mvm,
516 "Not valid error log pointer 0x%08X for %s uCode\n",
517 base,
518 (mvm->cur_ucode == IWL_UCODE_INIT)
519 ? "Init" : "RT");
520 return;
521 }
522
523 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
524
525 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
526 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
527 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
528 mvm->status, table.valid);
529 }
530
531 /* Do not change this output - scripts rely on it */
532
533 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
534
535 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
536 table.data1, table.data2, table.data3,
537 table.blink2, table.ilink1,
538 table.ilink2, table.bcon_time, table.gp1,
539 table.gp2, table.fw_rev_type, table.major,
540 table.minor, table.hw_ver, table.brd_ver);
541 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
542 desc_lookup(table.error_id));
543 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
544 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1);
545 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
546 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
547 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
548 IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
549 IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
550 IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
551 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
552 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
553 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
554 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
555 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
556 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type);
557 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
558 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
559 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
560 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
561 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
562 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
563 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
564 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
565 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
566 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
567 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id);
568 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
569 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
570 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
571 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
572 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
573 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
574 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
575 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
576 }
577
578 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
579 {
580 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[0]);
581
582 if (mvm->error_event_table[1])
583 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[1]);
584
585 if (mvm->support_umac_log)
586 iwl_mvm_dump_umac_error_log(mvm);
587 }
588
589 int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq)
590 {
591 int i;
592
593 lockdep_assert_held(&mvm->queue_info_lock);
594
595 /* Start by looking for a free queue */
596 for (i = minq; i <= maxq; i++)
597 if (mvm->queue_info[i].hw_queue_refcount == 0 &&
598 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)
599 return i;
600
601 /*
602 * If no free queue found - settle for an inactive one to reconfigure
603 * Make sure that the inactive queue either already belongs to this STA,
604 * or that if it belongs to another one - it isn't the reserved queue
605 */
606 for (i = minq; i <= maxq; i++)
607 if (mvm->queue_info[i].status == IWL_MVM_QUEUE_INACTIVE &&
608 (sta_id == mvm->queue_info[i].ra_sta_id ||
609 !mvm->queue_info[i].reserved))
610 return i;
611
612 return -ENOSPC;
613 }
614
615 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
616 int tid, int frame_limit, u16 ssn)
617 {
618 struct iwl_scd_txq_cfg_cmd cmd = {
619 .scd_queue = queue,
620 .action = SCD_CFG_ENABLE_QUEUE,
621 .window = frame_limit,
622 .sta_id = sta_id,
623 .ssn = cpu_to_le16(ssn),
624 .tx_fifo = fifo,
625 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
626 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
627 .tid = tid,
628 };
629 int ret;
630
631 spin_lock_bh(&mvm->queue_info_lock);
632 if (WARN(mvm->queue_info[queue].hw_queue_refcount == 0,
633 "Trying to reconfig unallocated queue %d\n", queue)) {
634 spin_unlock_bh(&mvm->queue_info_lock);
635 return -ENXIO;
636 }
637 spin_unlock_bh(&mvm->queue_info_lock);
638
639 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
640
641 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
642 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
643 queue, fifo, ret);
644
645 return ret;
646 }
647
648 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, int queue,
649 int mac80211_queue, u8 sta_id, u8 tid)
650 {
651 bool enable_queue = true;
652
653 spin_lock_bh(&mvm->queue_info_lock);
654
655 /* Make sure this TID isn't already enabled */
656 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
657 spin_unlock_bh(&mvm->queue_info_lock);
658 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
659 queue, tid);
660 return false;
661 }
662
663 /* Update mappings and refcounts */
664 if (mvm->queue_info[queue].hw_queue_refcount > 0)
665 enable_queue = false;
666
667 mvm->queue_info[queue].hw_queue_to_mac80211 |= BIT(mac80211_queue);
668 mvm->queue_info[queue].hw_queue_refcount++;
669 mvm->queue_info[queue].tid_bitmap |= BIT(tid);
670 mvm->queue_info[queue].ra_sta_id = sta_id;
671
672 if (enable_queue) {
673 if (tid != IWL_MAX_TID_COUNT)
674 mvm->queue_info[queue].mac80211_ac =
675 tid_to_mac80211_ac[tid];
676 else
677 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
678
679 mvm->queue_info[queue].txq_tid = tid;
680 }
681
682 IWL_DEBUG_TX_QUEUES(mvm,
683 "Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
684 queue, mvm->queue_info[queue].hw_queue_refcount,
685 mvm->queue_info[queue].hw_queue_to_mac80211);
686
687 spin_unlock_bh(&mvm->queue_info_lock);
688
689 return enable_queue;
690 }
691
692 void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
693 u16 ssn, const struct iwl_trans_txq_scd_cfg *cfg,
694 unsigned int wdg_timeout)
695 {
696 /* Send the enabling command if we need to */
697 if (iwl_mvm_update_txq_mapping(mvm, queue, mac80211_queue,
698 cfg->sta_id, cfg->tid)) {
699 struct iwl_scd_txq_cfg_cmd cmd = {
700 .scd_queue = queue,
701 .action = SCD_CFG_ENABLE_QUEUE,
702 .window = cfg->frame_limit,
703 .sta_id = cfg->sta_id,
704 .ssn = cpu_to_le16(ssn),
705 .tx_fifo = cfg->fifo,
706 .aggregate = cfg->aggregate,
707 .tid = cfg->tid,
708 };
709
710 iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL,
711 wdg_timeout);
712 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd),
713 &cmd),
714 "Failed to configure queue %d on FIFO %d\n", queue,
715 cfg->fifo);
716 }
717 }
718
719 int iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
720 u8 tid, u8 flags)
721 {
722 struct iwl_scd_txq_cfg_cmd cmd = {
723 .scd_queue = queue,
724 .action = SCD_CFG_DISABLE_QUEUE,
725 };
726 bool remove_mac_queue = true;
727 int ret;
728
729 spin_lock_bh(&mvm->queue_info_lock);
730
731 if (WARN_ON(mvm->queue_info[queue].hw_queue_refcount == 0)) {
732 spin_unlock_bh(&mvm->queue_info_lock);
733 return 0;
734 }
735
736 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
737
738 /*
739 * If there is another TID with the same AC - don't remove the MAC queue
740 * from the mapping
741 */
742 if (tid < IWL_MAX_TID_COUNT) {
743 unsigned long tid_bitmap =
744 mvm->queue_info[queue].tid_bitmap;
745 int ac = tid_to_mac80211_ac[tid];
746 int i;
747
748 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) {
749 if (tid_to_mac80211_ac[i] == ac)
750 remove_mac_queue = false;
751 }
752 }
753
754 if (remove_mac_queue)
755 mvm->queue_info[queue].hw_queue_to_mac80211 &=
756 ~BIT(mac80211_queue);
757 mvm->queue_info[queue].hw_queue_refcount--;
758
759 cmd.action = mvm->queue_info[queue].hw_queue_refcount ?
760 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;
761 if (cmd.action == SCD_CFG_DISABLE_QUEUE)
762 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;
763
764 IWL_DEBUG_TX_QUEUES(mvm,
765 "Disabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
766 queue,
767 mvm->queue_info[queue].hw_queue_refcount,
768 mvm->queue_info[queue].hw_queue_to_mac80211);
769
770 /* If the queue is still enabled - nothing left to do in this func */
771 if (cmd.action == SCD_CFG_ENABLE_QUEUE) {
772 spin_unlock_bh(&mvm->queue_info_lock);
773 return 0;
774 }
775
776 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
777 cmd.tid = mvm->queue_info[queue].txq_tid;
778
779 /* Make sure queue info is correct even though we overwrite it */
780 WARN(mvm->queue_info[queue].hw_queue_refcount ||
781 mvm->queue_info[queue].tid_bitmap ||
782 mvm->queue_info[queue].hw_queue_to_mac80211,
783 "TXQ #%d info out-of-sync - refcount=%d, mac map=0x%x, tid=0x%x\n",
784 queue, mvm->queue_info[queue].hw_queue_refcount,
785 mvm->queue_info[queue].hw_queue_to_mac80211,
786 mvm->queue_info[queue].tid_bitmap);
787
788 /* If we are here - the queue is freed and we can zero out these vals */
789 mvm->queue_info[queue].hw_queue_refcount = 0;
790 mvm->queue_info[queue].tid_bitmap = 0;
791 mvm->queue_info[queue].hw_queue_to_mac80211 = 0;
792
793 /* Regardless if this is a reserved TXQ for a STA - mark it as false */
794 mvm->queue_info[queue].reserved = false;
795
796 spin_unlock_bh(&mvm->queue_info_lock);
797
798 iwl_trans_txq_disable(mvm->trans, queue, false);
799 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags,
800 sizeof(cmd), &cmd);
801 if (ret)
802 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
803 queue, ret);
804
805 return ret;
806 }
807
808 /**
809 * iwl_mvm_send_lq_cmd() - Send link quality command
810 * @init: This command is sent as part of station initialization right
811 * after station has been added.
812 *
813 * The link quality command is sent as the last step of station creation.
814 * This is the special case in which init is set and we call a callback in
815 * this case to clear the state indicating that station creation is in
816 * progress.
817 */
818 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
819 {
820 struct iwl_host_cmd cmd = {
821 .id = LQ_CMD,
822 .len = { sizeof(struct iwl_lq_cmd), },
823 .flags = init ? 0 : CMD_ASYNC,
824 .data = { lq, },
825 };
826
827 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA))
828 return -EINVAL;
829
830 return iwl_mvm_send_cmd(mvm, &cmd);
831 }
832
833 /**
834 * iwl_mvm_update_smps - Get a request to change the SMPS mode
835 * @req_type: The part of the driver who call for a change.
836 * @smps_requests: The request to change the SMPS mode.
837 *
838 * Get a requst to change the SMPS mode,
839 * and change it according to all other requests in the driver.
840 */
841 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
842 enum iwl_mvm_smps_type_request req_type,
843 enum ieee80211_smps_mode smps_request)
844 {
845 struct iwl_mvm_vif *mvmvif;
846 enum ieee80211_smps_mode smps_mode;
847 int i;
848
849 lockdep_assert_held(&mvm->mutex);
850
851 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
852 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
853 return;
854
855 if (vif->type == NL80211_IFTYPE_AP)
856 smps_mode = IEEE80211_SMPS_OFF;
857 else
858 smps_mode = IEEE80211_SMPS_AUTOMATIC;
859
860 mvmvif = iwl_mvm_vif_from_mac80211(vif);
861 mvmvif->smps_requests[req_type] = smps_request;
862 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
863 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
864 smps_mode = IEEE80211_SMPS_STATIC;
865 break;
866 }
867 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
868 smps_mode = IEEE80211_SMPS_DYNAMIC;
869 }
870
871 ieee80211_request_smps(vif, smps_mode);
872 }
873
874 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
875 {
876 struct iwl_statistics_cmd scmd = {
877 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
878 };
879 struct iwl_host_cmd cmd = {
880 .id = STATISTICS_CMD,
881 .len[0] = sizeof(scmd),
882 .data[0] = &scmd,
883 .flags = CMD_WANT_SKB,
884 };
885 int ret;
886
887 ret = iwl_mvm_send_cmd(mvm, &cmd);
888 if (ret)
889 return ret;
890
891 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
892 iwl_free_resp(&cmd);
893
894 if (clear)
895 iwl_mvm_accu_radio_stats(mvm);
896
897 return 0;
898 }
899
900 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
901 {
902 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
903 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
904 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
905 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
906 }
907
908 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
909 struct ieee80211_vif *vif)
910 {
911 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
912 bool *result = _data;
913 int i;
914
915 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
916 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
917 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
918 *result = false;
919 }
920 }
921
922 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
923 {
924 bool result = true;
925
926 lockdep_assert_held(&mvm->mutex);
927
928 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
929 return false;
930
931 if (mvm->cfg->rx_with_siso_diversity)
932 return false;
933
934 ieee80211_iterate_active_interfaces_atomic(
935 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
936 iwl_mvm_diversity_iter, &result);
937
938 return result;
939 }
940
941 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
942 bool prev)
943 {
944 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
945 int res;
946
947 lockdep_assert_held(&mvm->mutex);
948
949 if (iwl_mvm_vif_low_latency(mvmvif) == prev)
950 return 0;
951
952 res = iwl_mvm_update_quotas(mvm, false, NULL);
953 if (res)
954 return res;
955
956 iwl_mvm_bt_coex_vif_change(mvm);
957
958 return iwl_mvm_power_update_mac(mvm);
959 }
960
961 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
962 {
963 bool *result = _data;
964
965 if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif)))
966 *result = true;
967 }
968
969 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
970 {
971 bool result = false;
972
973 ieee80211_iterate_active_interfaces_atomic(
974 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
975 iwl_mvm_ll_iter, &result);
976
977 return result;
978 }
979
980 struct iwl_bss_iter_data {
981 struct ieee80211_vif *vif;
982 bool error;
983 };
984
985 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
986 struct ieee80211_vif *vif)
987 {
988 struct iwl_bss_iter_data *data = _data;
989
990 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
991 return;
992
993 if (data->vif) {
994 data->error = true;
995 return;
996 }
997
998 data->vif = vif;
999 }
1000
1001 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
1002 {
1003 struct iwl_bss_iter_data bss_iter_data = {};
1004
1005 ieee80211_iterate_active_interfaces_atomic(
1006 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1007 iwl_mvm_bss_iface_iterator, &bss_iter_data);
1008
1009 if (bss_iter_data.error) {
1010 IWL_ERR(mvm, "More than one managed interface active!\n");
1011 return ERR_PTR(-EINVAL);
1012 }
1013
1014 return bss_iter_data.vif;
1015 }
1016
1017 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
1018 struct ieee80211_vif *vif,
1019 bool tdls, bool cmd_q)
1020 {
1021 struct iwl_fw_dbg_trigger_tlv *trigger;
1022 struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
1023 unsigned int default_timeout =
1024 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout;
1025
1026 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS))
1027 return iwlmvm_mod_params.tfd_q_hang_detect ?
1028 default_timeout : IWL_WATCHDOG_DISABLED;
1029
1030 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
1031 txq_timer = (void *)trigger->data;
1032
1033 if (tdls)
1034 return le32_to_cpu(txq_timer->tdls);
1035
1036 if (cmd_q)
1037 return le32_to_cpu(txq_timer->command_queue);
1038
1039 if (WARN_ON(!vif))
1040 return default_timeout;
1041
1042 switch (ieee80211_vif_type_p2p(vif)) {
1043 case NL80211_IFTYPE_ADHOC:
1044 return le32_to_cpu(txq_timer->ibss);
1045 case NL80211_IFTYPE_STATION:
1046 return le32_to_cpu(txq_timer->bss);
1047 case NL80211_IFTYPE_AP:
1048 return le32_to_cpu(txq_timer->softap);
1049 case NL80211_IFTYPE_P2P_CLIENT:
1050 return le32_to_cpu(txq_timer->p2p_client);
1051 case NL80211_IFTYPE_P2P_GO:
1052 return le32_to_cpu(txq_timer->p2p_go);
1053 case NL80211_IFTYPE_P2P_DEVICE:
1054 return le32_to_cpu(txq_timer->p2p_device);
1055 default:
1056 WARN_ON(1);
1057 return mvm->cfg->base_params->wd_timeout;
1058 }
1059 }
1060
1061 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1062 const char *errmsg)
1063 {
1064 struct iwl_fw_dbg_trigger_tlv *trig;
1065 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
1066
1067 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
1068 goto out;
1069
1070 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
1071 trig_mlme = (void *)trig->data;
1072 if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
1073 goto out;
1074
1075 if (trig_mlme->stop_connection_loss &&
1076 --trig_mlme->stop_connection_loss)
1077 goto out;
1078
1079 iwl_mvm_fw_dbg_collect_trig(mvm, trig, "%s", errmsg);
1080
1081 out:
1082 ieee80211_connection_loss(vif);
1083 }
1084
1085 /*
1086 * Remove inactive TIDs of a given queue.
1087 * If all queue TIDs are inactive - mark the queue as inactive
1088 * If only some the queue TIDs are inactive - unmap them from the queue
1089 */
1090 static void iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1091 struct iwl_mvm_sta *mvmsta, int queue,
1092 unsigned long tid_bitmap)
1093 {
1094 int tid;
1095
1096 lockdep_assert_held(&mvmsta->lock);
1097 lockdep_assert_held(&mvm->queue_info_lock);
1098
1099 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1100 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1101 /* If some TFDs are still queued - don't mark TID as inactive */
1102 if (iwl_mvm_tid_queued(&mvmsta->tid_data[tid]))
1103 tid_bitmap &= ~BIT(tid);
1104 }
1105
1106 /* If all TIDs in the queue are inactive - mark queue as inactive. */
1107 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1108 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE;
1109
1110 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1)
1111 mvmsta->tid_data[tid].is_tid_active = false;
1112
1113 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d marked as inactive\n",
1114 queue);
1115 return;
1116 }
1117
1118 /*
1119 * If we are here, this is a shared queue and not all TIDs timed-out.
1120 * Remove the ones that did.
1121 */
1122 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1123 int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]];
1124
1125 mvmsta->tid_data[tid].txq_id = IEEE80211_INVAL_HW_QUEUE;
1126 mvm->queue_info[queue].hw_queue_to_mac80211 &= ~BIT(mac_queue);
1127 mvm->queue_info[queue].hw_queue_refcount--;
1128 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1129 mvmsta->tid_data[tid].is_tid_active = false;
1130
1131 IWL_DEBUG_TX_QUEUES(mvm,
1132 "Removing inactive TID %d from shared Q:%d\n",
1133 tid, queue);
1134 }
1135
1136 IWL_DEBUG_TX_QUEUES(mvm,
1137 "TXQ #%d left with tid bitmap 0x%x\n", queue,
1138 mvm->queue_info[queue].tid_bitmap);
1139
1140 /*
1141 * There may be different TIDs with the same mac queues, so make
1142 * sure all TIDs have existing corresponding mac queues enabled
1143 */
1144 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1145 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1146 mvm->queue_info[queue].hw_queue_to_mac80211 |=
1147 BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]);
1148 }
1149
1150 /* If the queue is marked as shared - "unshare" it */
1151 if (mvm->queue_info[queue].hw_queue_refcount == 1 &&
1152 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1153 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RECONFIGURING;
1154 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1155 queue);
1156 }
1157 }
1158
1159 void iwl_mvm_inactivity_check(struct iwl_mvm *mvm)
1160 {
1161 unsigned long timeout_queues_map = 0;
1162 unsigned long now = jiffies;
1163 int i;
1164
1165 spin_lock_bh(&mvm->queue_info_lock);
1166 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1167 if (mvm->queue_info[i].hw_queue_refcount > 0)
1168 timeout_queues_map |= BIT(i);
1169 spin_unlock_bh(&mvm->queue_info_lock);
1170
1171 rcu_read_lock();
1172
1173 /*
1174 * If a queue time outs - mark it as INACTIVE (don't remove right away
1175 * if we don't have to.) This is an optimization in case traffic comes
1176 * later, and we don't HAVE to use a currently-inactive queue
1177 */
1178 for_each_set_bit(i, &timeout_queues_map, IWL_MAX_HW_QUEUES) {
1179 struct ieee80211_sta *sta;
1180 struct iwl_mvm_sta *mvmsta;
1181 u8 sta_id;
1182 int tid;
1183 unsigned long inactive_tid_bitmap = 0;
1184 unsigned long queue_tid_bitmap;
1185
1186 spin_lock_bh(&mvm->queue_info_lock);
1187 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1188
1189 /* If TXQ isn't in active use anyway - nothing to do here... */
1190 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1191 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) {
1192 spin_unlock_bh(&mvm->queue_info_lock);
1193 continue;
1194 }
1195
1196 /* Check to see if there are inactive TIDs on this queue */
1197 for_each_set_bit(tid, &queue_tid_bitmap,
1198 IWL_MAX_TID_COUNT + 1) {
1199 if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1200 IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1201 continue;
1202
1203 inactive_tid_bitmap |= BIT(tid);
1204 }
1205 spin_unlock_bh(&mvm->queue_info_lock);
1206
1207 /* If all TIDs are active - finish check on this queue */
1208 if (!inactive_tid_bitmap)
1209 continue;
1210
1211 /*
1212 * If we are here - the queue hadn't been served recently and is
1213 * in use
1214 */
1215
1216 sta_id = mvm->queue_info[i].ra_sta_id;
1217 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1218
1219 /*
1220 * If the STA doesn't exist anymore, it isn't an error. It could
1221 * be that it was removed since getting the queues, and in this
1222 * case it should've inactivated its queues anyway.
1223 */
1224 if (IS_ERR_OR_NULL(sta))
1225 continue;
1226
1227 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1228
1229 spin_lock_bh(&mvmsta->lock);
1230 spin_lock(&mvm->queue_info_lock);
1231 iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1232 inactive_tid_bitmap);
1233 spin_unlock(&mvm->queue_info_lock);
1234 spin_unlock_bh(&mvmsta->lock);
1235 }
1236
1237 rcu_read_unlock();
1238 }
1239
1240 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
1241 {
1242 bool ps_disabled;
1243
1244 lockdep_assert_held(&mvm->mutex);
1245
1246 /* Disable power save when reading GP2 */
1247 ps_disabled = mvm->ps_disabled;
1248 if (!ps_disabled) {
1249 mvm->ps_disabled = true;
1250 iwl_mvm_power_update_device(mvm);
1251 }
1252
1253 *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
1254 *boottime = ktime_get_boot_ns();
1255
1256 if (!ps_disabled) {
1257 mvm->ps_disabled = ps_disabled;
1258 iwl_mvm_power_update_device(mvm);
1259 }
1260 }
1261
1262 int iwl_mvm_send_lqm_cmd(struct ieee80211_vif *vif,
1263 enum iwl_lqm_cmd_operatrions operation,
1264 u32 duration, u32 timeout)
1265 {
1266 struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
1267 struct iwl_link_qual_msrmnt_cmd cmd = {
1268 .cmd_operation = cpu_to_le32(operation),
1269 .mac_id = cpu_to_le32(mvm_vif->id),
1270 .measurement_time = cpu_to_le32(duration),
1271 .timeout = cpu_to_le32(timeout),
1272 };
1273 u32 cmdid =
1274 iwl_cmd_id(LINK_QUALITY_MEASUREMENT_CMD, MAC_CONF_GROUP, 0);
1275 int ret;
1276
1277 if (!fw_has_capa(&mvm_vif->mvm->fw->ucode_capa,
1278 IWL_UCODE_TLV_CAPA_LQM_SUPPORT))
1279 return -EOPNOTSUPP;
1280
1281 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
1282 return -EINVAL;
1283
1284 switch (operation) {
1285 case LQM_CMD_OPERATION_START_MEASUREMENT:
1286 if (iwl_mvm_lqm_active(mvm_vif->mvm))
1287 return -EBUSY;
1288 if (!vif->bss_conf.assoc)
1289 return -EINVAL;
1290 mvm_vif->lqm_active = true;
1291 break;
1292 case LQM_CMD_OPERATION_STOP_MEASUREMENT:
1293 if (!iwl_mvm_lqm_active(mvm_vif->mvm))
1294 return -EINVAL;
1295 break;
1296 default:
1297 return -EINVAL;
1298 }
1299
1300 ret = iwl_mvm_send_cmd_pdu(mvm_vif->mvm, cmdid, 0, sizeof(cmd),
1301 &cmd);
1302
1303 /* command failed - roll back lqm_active state */
1304 if (ret) {
1305 mvm_vif->lqm_active =
1306 operation == LQM_CMD_OPERATION_STOP_MEASUREMENT;
1307 }
1308
1309 return ret;
1310 }
1311
1312 static void iwl_mvm_lqm_active_iterator(void *_data, u8 *mac,
1313 struct ieee80211_vif *vif)
1314 {
1315 struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
1316 bool *lqm_active = _data;
1317
1318 *lqm_active = *lqm_active || mvm_vif->lqm_active;
1319 }
1320
1321 bool iwl_mvm_lqm_active(struct iwl_mvm *mvm)
1322 {
1323 bool ret = false;
1324
1325 lockdep_assert_held(&mvm->mutex);
1326 ieee80211_iterate_active_interfaces_atomic(
1327 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1328 iwl_mvm_lqm_active_iterator, &ret);
1329
1330 return ret;
1331 }
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