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 * Copyright(c) 2018 Intel Corporation
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of version 2 of the GNU General Public License as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed in the hope that it will be useful, but
18 * WITHOUT ANY WARRANTY; without even the implied warranty of
19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 * General Public License for more details.
21 *
22 * The full GNU General Public License is included in this distribution
23 * in the file called COPYING.
24 *
25 * Contact Information:
26 * Intel Linux Wireless <linuxwifi@intel.com>
27 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *
29 * BSD LICENSE
30 *
31 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
32 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
33 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
34 * Copyright(c) 2018 Intel Corporation
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 *
41 * * Redistributions of source code must retain the above copyright
42 * notice, this list of conditions and the following disclaimer.
43 * * Redistributions in binary form must reproduce the above copyright
44 * notice, this list of conditions and the following disclaimer in
45 * the documentation and/or other materials provided with the
46 * distribution.
47 * * Neither the name Intel Corporation nor the names of its
48 * contributors may be used to endorse or promote products derived
49 * from this software without specific prior written permission.
50 *
51 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
52 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
53 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
54 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
55 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
56 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
57 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
58 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
59 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
60 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
61 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
62 *
63 *****************************************************************************/
64 #include <net/mac80211.h>
65
66 #include "iwl-debug.h"
67 #include "iwl-io.h"
68 #include "iwl-prph.h"
69 #include "iwl-csr.h"
70 #include "mvm.h"
71 #include "fw/api/rs.h"
72
73 /*
74 * Will return 0 even if the cmd failed when RFKILL is asserted unless
75 * CMD_WANT_SKB is set in cmd->flags.
76 */
iwl_mvm_send_cmd(struct iwl_mvm * mvm,struct iwl_host_cmd * cmd)77 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
78 {
79 int ret;
80
81 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
82 if (WARN_ON(mvm->d3_test_active))
83 return -EIO;
84 #endif
85
86 /*
87 * Synchronous commands from this op-mode must hold
88 * the mutex, this ensures we don't try to send two
89 * (or more) synchronous commands at a time.
90 */
91 if (!(cmd->flags & CMD_ASYNC))
92 lockdep_assert_held(&mvm->mutex);
93
94 ret = iwl_trans_send_cmd(mvm->trans, cmd);
95
96 /*
97 * If the caller wants the SKB, then don't hide any problems, the
98 * caller might access the response buffer which will be NULL if
99 * the command failed.
100 */
101 if (cmd->flags & CMD_WANT_SKB)
102 return ret;
103
104 /* Silently ignore failures if RFKILL is asserted */
105 if (!ret || ret == -ERFKILL)
106 return 0;
107 return ret;
108 }
109
iwl_mvm_send_cmd_pdu(struct iwl_mvm * mvm,u32 id,u32 flags,u16 len,const void * data)110 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
111 u32 flags, u16 len, const void *data)
112 {
113 struct iwl_host_cmd cmd = {
114 .id = id,
115 .len = { len, },
116 .data = { data, },
117 .flags = flags,
118 };
119
120 return iwl_mvm_send_cmd(mvm, &cmd);
121 }
122
123 /*
124 * We assume that the caller set the status to the success value
125 */
iwl_mvm_send_cmd_status(struct iwl_mvm * mvm,struct iwl_host_cmd * cmd,u32 * status)126 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
127 u32 *status)
128 {
129 struct iwl_rx_packet *pkt;
130 struct iwl_cmd_response *resp;
131 int ret, resp_len;
132
133 lockdep_assert_held(&mvm->mutex);
134
135 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
136 if (WARN_ON(mvm->d3_test_active))
137 return -EIO;
138 #endif
139
140 /*
141 * Only synchronous commands can wait for status,
142 * we use WANT_SKB so the caller can't.
143 */
144 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
145 "cmd flags %x", cmd->flags))
146 return -EINVAL;
147
148 cmd->flags |= CMD_WANT_SKB;
149
150 ret = iwl_trans_send_cmd(mvm->trans, cmd);
151 if (ret == -ERFKILL) {
152 /*
153 * The command failed because of RFKILL, don't update
154 * the status, leave it as success and return 0.
155 */
156 return 0;
157 } else if (ret) {
158 return ret;
159 }
160
161 pkt = cmd->resp_pkt;
162
163 resp_len = iwl_rx_packet_payload_len(pkt);
164 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
165 ret = -EIO;
166 goto out_free_resp;
167 }
168
169 resp = (void *)pkt->data;
170 *status = le32_to_cpu(resp->status);
171 out_free_resp:
172 iwl_free_resp(cmd);
173 return ret;
174 }
175
176 /*
177 * We assume that the caller set the status to the sucess value
178 */
iwl_mvm_send_cmd_pdu_status(struct iwl_mvm * mvm,u32 id,u16 len,const void * data,u32 * status)179 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
180 const void *data, u32 *status)
181 {
182 struct iwl_host_cmd cmd = {
183 .id = id,
184 .len = { len, },
185 .data = { data, },
186 };
187
188 return iwl_mvm_send_cmd_status(mvm, &cmd, status);
189 }
190
191 #define IWL_DECLARE_RATE_INFO(r) \
192 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
193
194 /*
195 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
196 */
197 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
198 IWL_DECLARE_RATE_INFO(1),
199 IWL_DECLARE_RATE_INFO(2),
200 IWL_DECLARE_RATE_INFO(5),
201 IWL_DECLARE_RATE_INFO(11),
202 IWL_DECLARE_RATE_INFO(6),
203 IWL_DECLARE_RATE_INFO(9),
204 IWL_DECLARE_RATE_INFO(12),
205 IWL_DECLARE_RATE_INFO(18),
206 IWL_DECLARE_RATE_INFO(24),
207 IWL_DECLARE_RATE_INFO(36),
208 IWL_DECLARE_RATE_INFO(48),
209 IWL_DECLARE_RATE_INFO(54),
210 };
211
iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,enum nl80211_band band)212 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
213 enum nl80211_band band)
214 {
215 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
216 int idx;
217 int band_offset = 0;
218
219 /* Legacy rate format, search for match in table */
220 if (band == NL80211_BAND_5GHZ)
221 band_offset = IWL_FIRST_OFDM_RATE;
222 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
223 if (fw_rate_idx_to_plcp[idx] == rate)
224 return idx - band_offset;
225
226 return -1;
227 }
228
iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)229 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
230 {
231 /* Get PLCP rate for tx_cmd->rate_n_flags */
232 return fw_rate_idx_to_plcp[rate_idx];
233 }
234
iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac)235 u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac)
236 {
237 static const u8 mac80211_ac_to_ucode_ac[] = {
238 AC_VO,
239 AC_VI,
240 AC_BE,
241 AC_BK
242 };
243
244 return mac80211_ac_to_ucode_ac[ac];
245 }
246
iwl_mvm_rx_fw_error(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)247 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
248 {
249 struct iwl_rx_packet *pkt = rxb_addr(rxb);
250 struct iwl_error_resp *err_resp = (void *)pkt->data;
251
252 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
253 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
254 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
255 le16_to_cpu(err_resp->bad_cmd_seq_num),
256 le32_to_cpu(err_resp->error_service));
257 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n",
258 le64_to_cpu(err_resp->timestamp));
259 }
260
261 /*
262 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
263 * The parameter should also be a combination of ANT_[ABC].
264 */
first_antenna(u8 mask)265 u8 first_antenna(u8 mask)
266 {
267 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
268 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
269 return BIT(0);
270 return BIT(ffs(mask) - 1);
271 }
272
273 /*
274 * Toggles between TX antennas to send the probe request on.
275 * Receives the bitmask of valid TX antennas and the *index* used
276 * for the last TX, and returns the next valid *index* to use.
277 * In order to set it in the tx_cmd, must do BIT(idx).
278 */
iwl_mvm_next_antenna(struct iwl_mvm * mvm,u8 valid,u8 last_idx)279 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
280 {
281 u8 ind = last_idx;
282 int i;
283
284 for (i = 0; i < MAX_ANT_NUM; i++) {
285 ind = (ind + 1) % MAX_ANT_NUM;
286 if (valid & BIT(ind))
287 return ind;
288 }
289
290 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
291 return last_idx;
292 }
293
294 #define FW_SYSASSERT_CPU_MASK 0xf0000000
295 static const struct {
296 const char *name;
297 u8 num;
298 } advanced_lookup[] = {
299 { "NMI_INTERRUPT_WDG", 0x34 },
300 { "SYSASSERT", 0x35 },
301 { "UCODE_VERSION_MISMATCH", 0x37 },
302 { "BAD_COMMAND", 0x38 },
303 { "BAD_COMMAND", 0x39 },
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_LMAC_FATAL", 0x70 },
313 { "NMI_INTERRUPT_UMAC_FATAL", 0x71 },
314 { "NMI_INTERRUPT_OTHER_LMAC_FATAL", 0x73 },
315 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
316 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
317 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
318 { "ADVANCED_SYSASSERT", 0 },
319 };
320
desc_lookup(u32 num)321 static const char *desc_lookup(u32 num)
322 {
323 int i;
324
325 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
326 if (advanced_lookup[i].num == (num & ~FW_SYSASSERT_CPU_MASK))
327 return advanced_lookup[i].name;
328
329 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
330 return advanced_lookup[i].name;
331 }
332
333 /*
334 * Note: This structure is read from the device with IO accesses,
335 * and the reading already does the endian conversion. As it is
336 * read with u32-sized accesses, any members with a different size
337 * need to be ordered correctly though!
338 */
339 struct iwl_error_event_table_v1 {
340 u32 valid; /* (nonzero) valid, (0) log is empty */
341 u32 error_id; /* type of error */
342 u32 pc; /* program counter */
343 u32 blink1; /* branch link */
344 u32 blink2; /* branch link */
345 u32 ilink1; /* interrupt link */
346 u32 ilink2; /* interrupt link */
347 u32 data1; /* error-specific data */
348 u32 data2; /* error-specific data */
349 u32 data3; /* error-specific data */
350 u32 bcon_time; /* beacon timer */
351 u32 tsf_low; /* network timestamp function timer */
352 u32 tsf_hi; /* network timestamp function timer */
353 u32 gp1; /* GP1 timer register */
354 u32 gp2; /* GP2 timer register */
355 u32 gp3; /* GP3 timer register */
356 u32 ucode_ver; /* uCode version */
357 u32 hw_ver; /* HW Silicon version */
358 u32 brd_ver; /* HW board version */
359 u32 log_pc; /* log program counter */
360 u32 frame_ptr; /* frame pointer */
361 u32 stack_ptr; /* stack pointer */
362 u32 hcmd; /* last host command header */
363 u32 isr0; /* isr status register LMPM_NIC_ISR0:
364 * rxtx_flag */
365 u32 isr1; /* isr status register LMPM_NIC_ISR1:
366 * host_flag */
367 u32 isr2; /* isr status register LMPM_NIC_ISR2:
368 * enc_flag */
369 u32 isr3; /* isr status register LMPM_NIC_ISR3:
370 * time_flag */
371 u32 isr4; /* isr status register LMPM_NIC_ISR4:
372 * wico interrupt */
373 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */
374 u32 wait_event; /* wait event() caller address */
375 u32 l2p_control; /* L2pControlField */
376 u32 l2p_duration; /* L2pDurationField */
377 u32 l2p_mhvalid; /* L2pMhValidBits */
378 u32 l2p_addr_match; /* L2pAddrMatchStat */
379 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
380 * (LMPM_PMG_SEL) */
381 u32 u_timestamp; /* indicate when the date and time of the
382 * compilation */
383 u32 flow_handler; /* FH read/write pointers, RX credit */
384 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;
385
386 struct iwl_error_event_table {
387 u32 valid; /* (nonzero) valid, (0) log is empty */
388 u32 error_id; /* type of error */
389 u32 trm_hw_status0; /* TRM HW status */
390 u32 trm_hw_status1; /* TRM HW status */
391 u32 blink2; /* branch link */
392 u32 ilink1; /* interrupt link */
393 u32 ilink2; /* interrupt link */
394 u32 data1; /* error-specific data */
395 u32 data2; /* error-specific data */
396 u32 data3; /* error-specific data */
397 u32 bcon_time; /* beacon timer */
398 u32 tsf_low; /* network timestamp function timer */
399 u32 tsf_hi; /* network timestamp function timer */
400 u32 gp1; /* GP1 timer register */
401 u32 gp2; /* GP2 timer register */
402 u32 fw_rev_type; /* firmware revision type */
403 u32 major; /* uCode version major */
404 u32 minor; /* uCode version minor */
405 u32 hw_ver; /* HW Silicon version */
406 u32 brd_ver; /* HW board version */
407 u32 log_pc; /* log program counter */
408 u32 frame_ptr; /* frame pointer */
409 u32 stack_ptr; /* stack pointer */
410 u32 hcmd; /* last host command header */
411 u32 isr0; /* isr status register LMPM_NIC_ISR0:
412 * rxtx_flag */
413 u32 isr1; /* isr status register LMPM_NIC_ISR1:
414 * host_flag */
415 u32 isr2; /* isr status register LMPM_NIC_ISR2:
416 * enc_flag */
417 u32 isr3; /* isr status register LMPM_NIC_ISR3:
418 * time_flag */
419 u32 isr4; /* isr status register LMPM_NIC_ISR4:
420 * wico interrupt */
421 u32 last_cmd_id; /* last HCMD id handled by the firmware */
422 u32 wait_event; /* wait event() caller address */
423 u32 l2p_control; /* L2pControlField */
424 u32 l2p_duration; /* L2pDurationField */
425 u32 l2p_mhvalid; /* L2pMhValidBits */
426 u32 l2p_addr_match; /* L2pAddrMatchStat */
427 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
428 * (LMPM_PMG_SEL) */
429 u32 u_timestamp; /* indicate when the date and time of the
430 * compilation */
431 u32 flow_handler; /* FH read/write pointers, RX credit */
432 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */;
433
434 /*
435 * UMAC error struct - relevant starting from family 8000 chip.
436 * Note: This structure is read from the device with IO accesses,
437 * and the reading already does the endian conversion. As it is
438 * read with u32-sized accesses, any members with a different size
439 * need to be ordered correctly though!
440 */
441 struct iwl_umac_error_event_table {
442 u32 valid; /* (nonzero) valid, (0) log is empty */
443 u32 error_id; /* type of error */
444 u32 blink1; /* branch link */
445 u32 blink2; /* branch link */
446 u32 ilink1; /* interrupt link */
447 u32 ilink2; /* interrupt link */
448 u32 data1; /* error-specific data */
449 u32 data2; /* error-specific data */
450 u32 data3; /* error-specific data */
451 u32 umac_major;
452 u32 umac_minor;
453 u32 frame_pointer; /* core register 27*/
454 u32 stack_pointer; /* core register 28 */
455 u32 cmd_header; /* latest host cmd sent to UMAC */
456 u32 nic_isr_pref; /* ISR status register */
457 } __packed;
458
459 #define ERROR_START_OFFSET (1 * sizeof(u32))
460 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
461
iwl_mvm_dump_umac_error_log(struct iwl_mvm * mvm)462 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
463 {
464 struct iwl_trans *trans = mvm->trans;
465 struct iwl_umac_error_event_table table;
466 u32 base = mvm->trans->dbg.umac_error_event_table;
467
468 if (!mvm->support_umac_log &&
469 !(mvm->trans->dbg.error_event_table_tlv_status &
470 IWL_ERROR_EVENT_TABLE_UMAC))
471 return;
472
473 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
474
475 if (table.valid)
476 mvm->fwrt.dump.umac_err_id = table.error_id;
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
iwl_mvm_dump_lmac_error_log(struct iwl_mvm * mvm,u8 lmac_num)501 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num)
502 {
503 struct iwl_trans *trans = mvm->trans;
504 struct iwl_error_event_table table;
505 u32 val, base = mvm->trans->dbg.lmac_error_event_table[lmac_num];
506
507 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) {
508 if (!base)
509 base = mvm->fw->init_errlog_ptr;
510 } else {
511 if (!base)
512 base = mvm->fw->inst_errlog_ptr;
513 }
514
515 if (base < 0x400000) {
516 IWL_ERR(mvm,
517 "Not valid error log pointer 0x%08X for %s uCode\n",
518 base,
519 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT)
520 ? "Init" : "RT");
521 return;
522 }
523
524 /* check if there is a HW error */
525 val = iwl_trans_read_mem32(trans, base);
526 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) {
527 int err;
528
529 IWL_ERR(trans, "HW error, resetting before reading\n");
530
531 /* reset the device */
532 iwl_trans_sw_reset(trans);
533
534 err = iwl_finish_nic_init(trans, trans->trans_cfg);
535 if (err)
536 return;
537 }
538
539 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
540
541 if (table.valid)
542 mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id;
543
544 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
545 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
546 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
547 mvm->status, table.valid);
548 }
549
550 /* Do not change this output - scripts rely on it */
551
552 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
553
554 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
555 desc_lookup(table.error_id));
556 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
557 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1);
558 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
559 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
560 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
561 IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
562 IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
563 IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
564 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
565 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
566 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
567 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
568 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
569 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type);
570 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
571 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
572 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
573 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
574 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
575 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
576 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
577 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
578 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
579 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
580 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id);
581 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
582 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
583 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
584 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
585 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
586 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
587 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
588 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
589 }
590
iwl_mvm_dump_nic_error_log(struct iwl_mvm * mvm)591 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
592 {
593 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) {
594 IWL_ERR(mvm,
595 "DEVICE_ENABLED bit is not set. Aborting dump.\n");
596 return;
597 }
598
599 iwl_mvm_dump_lmac_error_log(mvm, 0);
600
601 if (mvm->trans->dbg.lmac_error_event_table[1])
602 iwl_mvm_dump_lmac_error_log(mvm, 1);
603
604 iwl_mvm_dump_umac_error_log(mvm);
605
606 iwl_fw_error_print_fseq_regs(&mvm->fwrt);
607 }
608
iwl_mvm_reconfig_scd(struct iwl_mvm * mvm,int queue,int fifo,int sta_id,int tid,int frame_limit,u16 ssn)609 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
610 int tid, int frame_limit, u16 ssn)
611 {
612 struct iwl_scd_txq_cfg_cmd cmd = {
613 .scd_queue = queue,
614 .action = SCD_CFG_ENABLE_QUEUE,
615 .window = frame_limit,
616 .sta_id = sta_id,
617 .ssn = cpu_to_le16(ssn),
618 .tx_fifo = fifo,
619 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
620 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
621 .tid = tid,
622 };
623 int ret;
624
625 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
626 return -EINVAL;
627
628 if (WARN(mvm->queue_info[queue].tid_bitmap == 0,
629 "Trying to reconfig unallocated queue %d\n", queue))
630 return -ENXIO;
631
632 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
633
634 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
635 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
636 queue, fifo, ret);
637
638 return ret;
639 }
640
641 /**
642 * iwl_mvm_send_lq_cmd() - Send link quality command
643 * @sync: This command can be sent synchronously.
644 *
645 * The link quality command is sent as the last step of station creation.
646 * This is the special case in which init is set and we call a callback in
647 * this case to clear the state indicating that station creation is in
648 * progress.
649 */
iwl_mvm_send_lq_cmd(struct iwl_mvm * mvm,struct iwl_lq_cmd * lq)650 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq)
651 {
652 struct iwl_host_cmd cmd = {
653 .id = LQ_CMD,
654 .len = { sizeof(struct iwl_lq_cmd), },
655 .flags = CMD_ASYNC,
656 .data = { lq, },
657 };
658
659 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA ||
660 iwl_mvm_has_tlc_offload(mvm)))
661 return -EINVAL;
662
663 return iwl_mvm_send_cmd(mvm, &cmd);
664 }
665
666 /**
667 * iwl_mvm_update_smps - Get a request to change the SMPS mode
668 * @req_type: The part of the driver who call for a change.
669 * @smps_requests: The request to change the SMPS mode.
670 *
671 * Get a requst to change the SMPS mode,
672 * and change it according to all other requests in the driver.
673 */
iwl_mvm_update_smps(struct iwl_mvm * mvm,struct ieee80211_vif * vif,enum iwl_mvm_smps_type_request req_type,enum ieee80211_smps_mode smps_request)674 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
675 enum iwl_mvm_smps_type_request req_type,
676 enum ieee80211_smps_mode smps_request)
677 {
678 struct iwl_mvm_vif *mvmvif;
679 enum ieee80211_smps_mode smps_mode;
680 int i;
681
682 lockdep_assert_held(&mvm->mutex);
683
684 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
685 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
686 return;
687
688 if (vif->type == NL80211_IFTYPE_AP)
689 smps_mode = IEEE80211_SMPS_OFF;
690 else
691 smps_mode = IEEE80211_SMPS_AUTOMATIC;
692
693 mvmvif = iwl_mvm_vif_from_mac80211(vif);
694 mvmvif->smps_requests[req_type] = smps_request;
695 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
696 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
697 smps_mode = IEEE80211_SMPS_STATIC;
698 break;
699 }
700 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
701 smps_mode = IEEE80211_SMPS_DYNAMIC;
702 }
703
704 ieee80211_request_smps(vif, smps_mode);
705 }
706
iwl_mvm_request_statistics(struct iwl_mvm * mvm,bool clear)707 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
708 {
709 struct iwl_statistics_cmd scmd = {
710 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
711 };
712 struct iwl_host_cmd cmd = {
713 .id = STATISTICS_CMD,
714 .len[0] = sizeof(scmd),
715 .data[0] = &scmd,
716 .flags = CMD_WANT_SKB,
717 };
718 int ret;
719
720 ret = iwl_mvm_send_cmd(mvm, &cmd);
721 if (ret)
722 return ret;
723
724 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
725 iwl_free_resp(&cmd);
726
727 if (clear)
728 iwl_mvm_accu_radio_stats(mvm);
729
730 return 0;
731 }
732
iwl_mvm_accu_radio_stats(struct iwl_mvm * mvm)733 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
734 {
735 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
736 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
737 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
738 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
739 }
740
iwl_mvm_diversity_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)741 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
742 struct ieee80211_vif *vif)
743 {
744 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
745 bool *result = _data;
746 int i;
747
748 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
749 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
750 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
751 *result = false;
752 }
753 }
754
iwl_mvm_rx_diversity_allowed(struct iwl_mvm * mvm)755 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
756 {
757 bool result = true;
758
759 lockdep_assert_held(&mvm->mutex);
760
761 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
762 return false;
763
764 if (mvm->cfg->rx_with_siso_diversity)
765 return false;
766
767 ieee80211_iterate_active_interfaces_atomic(
768 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
769 iwl_mvm_diversity_iter, &result);
770
771 return result;
772 }
773
iwl_mvm_send_low_latency_cmd(struct iwl_mvm * mvm,bool low_latency,u16 mac_id)774 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm,
775 bool low_latency, u16 mac_id)
776 {
777 struct iwl_mac_low_latency_cmd cmd = {
778 .mac_id = cpu_to_le32(mac_id)
779 };
780
781 if (!fw_has_capa(&mvm->fw->ucode_capa,
782 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA))
783 return;
784
785 if (low_latency) {
786 /* currently we don't care about the direction */
787 cmd.low_latency_rx = 1;
788 cmd.low_latency_tx = 1;
789 }
790
791 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD,
792 MAC_CONF_GROUP, 0),
793 0, sizeof(cmd), &cmd))
794 IWL_ERR(mvm, "Failed to send low latency command\n");
795 }
796
iwl_mvm_update_low_latency(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool low_latency,enum iwl_mvm_low_latency_cause cause)797 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
798 bool low_latency,
799 enum iwl_mvm_low_latency_cause cause)
800 {
801 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
802 int res;
803 bool prev;
804
805 lockdep_assert_held(&mvm->mutex);
806
807 prev = iwl_mvm_vif_low_latency(mvmvif);
808 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause);
809
810 low_latency = iwl_mvm_vif_low_latency(mvmvif);
811
812 if (low_latency == prev)
813 return 0;
814
815 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id);
816
817 res = iwl_mvm_update_quotas(mvm, false, NULL);
818 if (res)
819 return res;
820
821 iwl_mvm_bt_coex_vif_change(mvm);
822
823 return iwl_mvm_power_update_mac(mvm);
824 }
825
826 struct iwl_mvm_low_latency_iter {
827 bool result;
828 bool result_per_band[NUM_NL80211_BANDS];
829 };
830
iwl_mvm_ll_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)831 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
832 {
833 struct iwl_mvm_low_latency_iter *result = _data;
834 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
835 enum nl80211_band band;
836
837 if (iwl_mvm_vif_low_latency(mvmvif)) {
838 result->result = true;
839
840 if (!mvmvif->phy_ctxt)
841 return;
842
843 band = mvmvif->phy_ctxt->channel->band;
844 result->result_per_band[band] = true;
845 }
846 }
847
iwl_mvm_low_latency(struct iwl_mvm * mvm)848 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
849 {
850 struct iwl_mvm_low_latency_iter data = {};
851
852 ieee80211_iterate_active_interfaces_atomic(
853 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
854 iwl_mvm_ll_iter, &data);
855
856 return data.result;
857 }
858
iwl_mvm_low_latency_band(struct iwl_mvm * mvm,enum nl80211_band band)859 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band)
860 {
861 struct iwl_mvm_low_latency_iter data = {};
862
863 ieee80211_iterate_active_interfaces_atomic(
864 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
865 iwl_mvm_ll_iter, &data);
866
867 return data.result_per_band[band];
868 }
869
870 struct iwl_bss_iter_data {
871 struct ieee80211_vif *vif;
872 bool error;
873 };
874
iwl_mvm_bss_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)875 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
876 struct ieee80211_vif *vif)
877 {
878 struct iwl_bss_iter_data *data = _data;
879
880 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
881 return;
882
883 if (data->vif) {
884 data->error = true;
885 return;
886 }
887
888 data->vif = vif;
889 }
890
iwl_mvm_get_bss_vif(struct iwl_mvm * mvm)891 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
892 {
893 struct iwl_bss_iter_data bss_iter_data = {};
894
895 ieee80211_iterate_active_interfaces_atomic(
896 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
897 iwl_mvm_bss_iface_iterator, &bss_iter_data);
898
899 if (bss_iter_data.error) {
900 IWL_ERR(mvm, "More than one managed interface active!\n");
901 return ERR_PTR(-EINVAL);
902 }
903
904 return bss_iter_data.vif;
905 }
906
907 struct iwl_sta_iter_data {
908 bool assoc;
909 };
910
iwl_mvm_sta_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)911 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
912 struct ieee80211_vif *vif)
913 {
914 struct iwl_sta_iter_data *data = _data;
915
916 if (vif->type != NL80211_IFTYPE_STATION)
917 return;
918
919 if (vif->bss_conf.assoc)
920 data->assoc = true;
921 }
922
iwl_mvm_is_vif_assoc(struct iwl_mvm * mvm)923 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
924 {
925 struct iwl_sta_iter_data data = {
926 .assoc = false,
927 };
928
929 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
930 IEEE80211_IFACE_ITER_NORMAL,
931 iwl_mvm_sta_iface_iterator,
932 &data);
933 return data.assoc;
934 }
935
iwl_mvm_get_wd_timeout(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool tdls,bool cmd_q)936 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
937 struct ieee80211_vif *vif,
938 bool tdls, bool cmd_q)
939 {
940 struct iwl_fw_dbg_trigger_tlv *trigger;
941 struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
942 unsigned int default_timeout = cmd_q ?
943 IWL_DEF_WD_TIMEOUT :
944 mvm->trans->trans_cfg->base_params->wd_timeout;
945
946 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) {
947 /*
948 * We can't know when the station is asleep or awake, so we
949 * must disable the queue hang detection.
950 */
951 if (fw_has_capa(&mvm->fw->ucode_capa,
952 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
953 vif && vif->type == NL80211_IFTYPE_AP)
954 return IWL_WATCHDOG_DISABLED;
955 return iwlmvm_mod_params.tfd_q_hang_detect ?
956 default_timeout : IWL_WATCHDOG_DISABLED;
957 }
958
959 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
960 txq_timer = (void *)trigger->data;
961
962 if (tdls)
963 return le32_to_cpu(txq_timer->tdls);
964
965 if (cmd_q)
966 return le32_to_cpu(txq_timer->command_queue);
967
968 if (WARN_ON(!vif))
969 return default_timeout;
970
971 switch (ieee80211_vif_type_p2p(vif)) {
972 case NL80211_IFTYPE_ADHOC:
973 return le32_to_cpu(txq_timer->ibss);
974 case NL80211_IFTYPE_STATION:
975 return le32_to_cpu(txq_timer->bss);
976 case NL80211_IFTYPE_AP:
977 return le32_to_cpu(txq_timer->softap);
978 case NL80211_IFTYPE_P2P_CLIENT:
979 return le32_to_cpu(txq_timer->p2p_client);
980 case NL80211_IFTYPE_P2P_GO:
981 return le32_to_cpu(txq_timer->p2p_go);
982 case NL80211_IFTYPE_P2P_DEVICE:
983 return le32_to_cpu(txq_timer->p2p_device);
984 case NL80211_IFTYPE_MONITOR:
985 return default_timeout;
986 default:
987 WARN_ON(1);
988 return mvm->trans->trans_cfg->base_params->wd_timeout;
989 }
990 }
991
iwl_mvm_connection_loss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const char * errmsg)992 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
993 const char *errmsg)
994 {
995 struct iwl_fw_dbg_trigger_tlv *trig;
996 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
997
998 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
999 FW_DBG_TRIGGER_MLME);
1000 if (!trig)
1001 goto out;
1002
1003 trig_mlme = (void *)trig->data;
1004
1005 if (trig_mlme->stop_connection_loss &&
1006 --trig_mlme->stop_connection_loss)
1007 goto out;
1008
1009 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
1010
1011 out:
1012 ieee80211_connection_loss(vif);
1013 }
1014
iwl_mvm_event_frame_timeout_callback(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const struct ieee80211_sta * sta,u16 tid)1015 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
1016 struct ieee80211_vif *vif,
1017 const struct ieee80211_sta *sta,
1018 u16 tid)
1019 {
1020 struct iwl_fw_dbg_trigger_tlv *trig;
1021 struct iwl_fw_dbg_trigger_ba *ba_trig;
1022
1023 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1024 FW_DBG_TRIGGER_BA);
1025 if (!trig)
1026 return;
1027
1028 ba_trig = (void *)trig->data;
1029
1030 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid)))
1031 return;
1032
1033 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1034 "Frame from %pM timed out, tid %d",
1035 sta->addr, tid);
1036 }
1037
iwl_mvm_tcm_load_percentage(u32 airtime,u32 elapsed)1038 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed)
1039 {
1040 if (!elapsed)
1041 return 0;
1042
1043 return (100 * airtime / elapsed) / USEC_PER_MSEC;
1044 }
1045
1046 static enum iwl_mvm_traffic_load
iwl_mvm_tcm_load(struct iwl_mvm * mvm,u32 airtime,unsigned long elapsed)1047 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed)
1048 {
1049 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed);
1050
1051 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH)
1052 return IWL_MVM_TRAFFIC_HIGH;
1053 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH)
1054 return IWL_MVM_TRAFFIC_MEDIUM;
1055
1056 return IWL_MVM_TRAFFIC_LOW;
1057 }
1058
1059 struct iwl_mvm_tcm_iter_data {
1060 struct iwl_mvm *mvm;
1061 bool any_sent;
1062 };
1063
iwl_mvm_tcm_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)1064 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
1065 {
1066 struct iwl_mvm_tcm_iter_data *data = _data;
1067 struct iwl_mvm *mvm = data->mvm;
1068 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1069 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC;
1070
1071 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER)
1072 return;
1073
1074 low_latency = mvm->tcm.result.low_latency[mvmvif->id];
1075
1076 if (!mvm->tcm.result.change[mvmvif->id] &&
1077 prev == low_latency) {
1078 iwl_mvm_update_quotas(mvm, false, NULL);
1079 return;
1080 }
1081
1082 if (prev != low_latency) {
1083 /* this sends traffic load and updates quota as well */
1084 iwl_mvm_update_low_latency(mvm, vif, low_latency,
1085 LOW_LATENCY_TRAFFIC);
1086 } else {
1087 iwl_mvm_update_quotas(mvm, false, NULL);
1088 }
1089
1090 data->any_sent = true;
1091 }
1092
iwl_mvm_tcm_results(struct iwl_mvm * mvm)1093 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm)
1094 {
1095 struct iwl_mvm_tcm_iter_data data = {
1096 .mvm = mvm,
1097 .any_sent = false,
1098 };
1099
1100 mutex_lock(&mvm->mutex);
1101
1102 ieee80211_iterate_active_interfaces(
1103 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1104 iwl_mvm_tcm_iter, &data);
1105
1106 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1107 iwl_mvm_config_scan(mvm);
1108
1109 mutex_unlock(&mvm->mutex);
1110 }
1111
iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct * wk)1112 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk)
1113 {
1114 struct iwl_mvm *mvm;
1115 struct iwl_mvm_vif *mvmvif;
1116 struct ieee80211_vif *vif;
1117
1118 mvmvif = container_of(wk, struct iwl_mvm_vif,
1119 uapsd_nonagg_detected_wk.work);
1120 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
1121 mvm = mvmvif->mvm;
1122
1123 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions)
1124 return;
1125
1126 /* remember that this AP is broken */
1127 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr,
1128 vif->bss_conf.bssid, ETH_ALEN);
1129 mvm->uapsd_noagg_bssid_write_idx++;
1130 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN)
1131 mvm->uapsd_noagg_bssid_write_idx = 0;
1132
1133 iwl_mvm_connection_loss(mvm, vif,
1134 "AP isn't using AMPDU with uAPSD enabled");
1135 }
1136
iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1137 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm,
1138 struct ieee80211_vif *vif)
1139 {
1140 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1141
1142 if (vif->type != NL80211_IFTYPE_STATION)
1143 return;
1144
1145 if (!vif->bss_conf.assoc)
1146 return;
1147
1148 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd &&
1149 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd &&
1150 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd &&
1151 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd)
1152 return;
1153
1154 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected)
1155 return;
1156
1157 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true;
1158 IWL_INFO(mvm,
1159 "detected AP should do aggregation but isn't, likely due to U-APSD\n");
1160 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ);
1161 }
1162
iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm * mvm,unsigned int elapsed,int mac)1163 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm,
1164 unsigned int elapsed,
1165 int mac)
1166 {
1167 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes;
1168 u64 tpt;
1169 unsigned long rate;
1170 struct ieee80211_vif *vif;
1171
1172 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate);
1173
1174 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions ||
1175 mvm->tcm.data[mac].uapsd_nonagg_detect.detected)
1176 return;
1177
1178 if (iwl_mvm_has_new_rx_api(mvm)) {
1179 tpt = 8 * bytes; /* kbps */
1180 do_div(tpt, elapsed);
1181 rate *= 1000; /* kbps */
1182 if (tpt < 22 * rate / 100)
1183 return;
1184 } else {
1185 /*
1186 * the rate here is actually the threshold, in 100Kbps units,
1187 * so do the needed conversion from bytes to 100Kbps:
1188 * 100kb = bits / (100 * 1000),
1189 * 100kbps = 100kb / (msecs / 1000) ==
1190 * (bits / (100 * 1000)) / (msecs / 1000) ==
1191 * bits / (100 * msecs)
1192 */
1193 tpt = (8 * bytes);
1194 do_div(tpt, elapsed * 100);
1195 if (tpt < rate)
1196 return;
1197 }
1198
1199 rcu_read_lock();
1200 vif = rcu_dereference(mvm->vif_id_to_mac[mac]);
1201 if (vif)
1202 iwl_mvm_uapsd_agg_disconnect(mvm, vif);
1203 rcu_read_unlock();
1204 }
1205
iwl_mvm_tcm_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1206 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac,
1207 struct ieee80211_vif *vif)
1208 {
1209 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1210 u32 *band = _data;
1211
1212 if (!mvmvif->phy_ctxt)
1213 return;
1214
1215 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band;
1216 }
1217
iwl_mvm_calc_tcm_stats(struct iwl_mvm * mvm,unsigned long ts,bool handle_uapsd)1218 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm,
1219 unsigned long ts,
1220 bool handle_uapsd)
1221 {
1222 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts);
1223 unsigned int uapsd_elapsed =
1224 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts);
1225 u32 total_airtime = 0;
1226 u32 band_airtime[NUM_NL80211_BANDS] = {0};
1227 u32 band[NUM_MAC_INDEX_DRIVER] = {0};
1228 int ac, mac, i;
1229 bool low_latency = false;
1230 enum iwl_mvm_traffic_load load, band_load;
1231 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD);
1232
1233 if (handle_ll)
1234 mvm->tcm.ll_ts = ts;
1235 if (handle_uapsd)
1236 mvm->tcm.uapsd_nonagg_ts = ts;
1237
1238 mvm->tcm.result.elapsed = elapsed;
1239
1240 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1241 IEEE80211_IFACE_ITER_NORMAL,
1242 iwl_mvm_tcm_iterator,
1243 &band);
1244
1245 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1246 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1247 u32 vo_vi_pkts = 0;
1248 u32 airtime = mdata->rx.airtime + mdata->tx.airtime;
1249
1250 total_airtime += airtime;
1251 band_airtime[band[mac]] += airtime;
1252
1253 load = iwl_mvm_tcm_load(mvm, airtime, elapsed);
1254 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac];
1255 mvm->tcm.result.load[mac] = load;
1256 mvm->tcm.result.airtime[mac] = airtime;
1257
1258 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++)
1259 vo_vi_pkts += mdata->rx.pkts[ac] +
1260 mdata->tx.pkts[ac];
1261
1262 /* enable immediately with enough packets but defer disabling */
1263 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH)
1264 mvm->tcm.result.low_latency[mac] = true;
1265 else if (handle_ll)
1266 mvm->tcm.result.low_latency[mac] = false;
1267
1268 if (handle_ll) {
1269 /* clear old data */
1270 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1271 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1272 }
1273 low_latency |= mvm->tcm.result.low_latency[mac];
1274
1275 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd)
1276 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed,
1277 mac);
1278 /* clear old data */
1279 if (handle_uapsd)
1280 mdata->uapsd_nonagg_detect.rx_bytes = 0;
1281 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1282 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1283 }
1284
1285 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed);
1286 mvm->tcm.result.global_change = load != mvm->tcm.result.global_load;
1287 mvm->tcm.result.global_load = load;
1288
1289 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1290 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed);
1291 mvm->tcm.result.band_load[i] = band_load;
1292 }
1293
1294 /*
1295 * If the current load isn't low we need to force re-evaluation
1296 * in the TCM period, so that we can return to low load if there
1297 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get
1298 * triggered by traffic).
1299 */
1300 if (load != IWL_MVM_TRAFFIC_LOW)
1301 return MVM_TCM_PERIOD;
1302 /*
1303 * If low-latency is active we need to force re-evaluation after
1304 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency
1305 * when there's no traffic at all.
1306 */
1307 if (low_latency)
1308 return MVM_LL_PERIOD;
1309 /*
1310 * Otherwise, we don't need to run the work struct because we're
1311 * in the default "idle" state - traffic indication is low (which
1312 * also covers the "no traffic" case) and low-latency is disabled
1313 * so there's no state that may need to be disabled when there's
1314 * no traffic at all.
1315 *
1316 * Note that this has no impact on the regular scheduling of the
1317 * updates triggered by traffic - those happen whenever one of the
1318 * two timeouts expire (if there's traffic at all.)
1319 */
1320 return 0;
1321 }
1322
iwl_mvm_recalc_tcm(struct iwl_mvm * mvm)1323 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm)
1324 {
1325 unsigned long ts = jiffies;
1326 bool handle_uapsd =
1327 time_after(ts, mvm->tcm.uapsd_nonagg_ts +
1328 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD));
1329
1330 spin_lock(&mvm->tcm.lock);
1331 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1332 spin_unlock(&mvm->tcm.lock);
1333 return;
1334 }
1335 spin_unlock(&mvm->tcm.lock);
1336
1337 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) {
1338 mutex_lock(&mvm->mutex);
1339 if (iwl_mvm_request_statistics(mvm, true))
1340 handle_uapsd = false;
1341 mutex_unlock(&mvm->mutex);
1342 }
1343
1344 spin_lock(&mvm->tcm.lock);
1345 /* re-check if somebody else won the recheck race */
1346 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1347 /* calculate statistics */
1348 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts,
1349 handle_uapsd);
1350
1351 /* the memset needs to be visible before the timestamp */
1352 smp_mb();
1353 mvm->tcm.ts = ts;
1354 if (work_delay)
1355 schedule_delayed_work(&mvm->tcm.work, work_delay);
1356 }
1357 spin_unlock(&mvm->tcm.lock);
1358
1359 iwl_mvm_tcm_results(mvm);
1360 }
1361
iwl_mvm_tcm_work(struct work_struct * work)1362 void iwl_mvm_tcm_work(struct work_struct *work)
1363 {
1364 struct delayed_work *delayed_work = to_delayed_work(work);
1365 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
1366 tcm.work);
1367
1368 iwl_mvm_recalc_tcm(mvm);
1369 }
1370
iwl_mvm_pause_tcm(struct iwl_mvm * mvm,bool with_cancel)1371 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel)
1372 {
1373 spin_lock_bh(&mvm->tcm.lock);
1374 mvm->tcm.paused = true;
1375 spin_unlock_bh(&mvm->tcm.lock);
1376 if (with_cancel)
1377 cancel_delayed_work_sync(&mvm->tcm.work);
1378 }
1379
iwl_mvm_resume_tcm(struct iwl_mvm * mvm)1380 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm)
1381 {
1382 int mac;
1383 bool low_latency = false;
1384
1385 spin_lock_bh(&mvm->tcm.lock);
1386 mvm->tcm.ts = jiffies;
1387 mvm->tcm.ll_ts = jiffies;
1388 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1389 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1390
1391 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1392 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1393 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1394 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1395
1396 if (mvm->tcm.result.low_latency[mac])
1397 low_latency = true;
1398 }
1399 /* The TCM data needs to be reset before "paused" flag changes */
1400 smp_mb();
1401 mvm->tcm.paused = false;
1402
1403 /*
1404 * if the current load is not low or low latency is active, force
1405 * re-evaluation to cover the case of no traffic.
1406 */
1407 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW)
1408 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD);
1409 else if (low_latency)
1410 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD);
1411
1412 spin_unlock_bh(&mvm->tcm.lock);
1413 }
1414
iwl_mvm_tcm_add_vif(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1415 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1416 {
1417 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1418
1419 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk,
1420 iwl_mvm_tcm_uapsd_nonagg_detected_wk);
1421 }
1422
iwl_mvm_tcm_rm_vif(struct iwl_mvm * mvm,struct ieee80211_vif * vif)1423 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1424 {
1425 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1426
1427 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk);
1428 }
1429
iwl_mvm_get_systime(struct iwl_mvm * mvm)1430 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm)
1431 {
1432 u32 reg_addr = DEVICE_SYSTEM_TIME_REG;
1433
1434 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 &&
1435 mvm->trans->cfg->gp2_reg_addr)
1436 reg_addr = mvm->trans->cfg->gp2_reg_addr;
1437
1438 return iwl_read_prph(mvm->trans, reg_addr);
1439 }
1440
iwl_mvm_get_sync_time(struct iwl_mvm * mvm,u32 * gp2,u64 * boottime)1441 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
1442 {
1443 bool ps_disabled;
1444
1445 lockdep_assert_held(&mvm->mutex);
1446
1447 /* Disable power save when reading GP2 */
1448 ps_disabled = mvm->ps_disabled;
1449 if (!ps_disabled) {
1450 mvm->ps_disabled = true;
1451 iwl_mvm_power_update_device(mvm);
1452 }
1453
1454 *gp2 = iwl_mvm_get_systime(mvm);
1455 *boottime = ktime_get_boottime_ns();
1456
1457 if (!ps_disabled) {
1458 mvm->ps_disabled = ps_disabled;
1459 iwl_mvm_power_update_device(mvm);
1460 }
1461 }
1462
