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[mirror_ubuntu-jammy-kernel.git] / drivers / net / wireless / intel / iwlwifi / mvm / utils.c
1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2012-2014, 2018-2021 Intel Corporation
4 * Copyright (C) 2013-2014 Intel Mobile Communications GmbH
5 * Copyright (C) 2015-2017 Intel Deutschland GmbH
6 */
7 #include <net/mac80211.h>
8
9 #include "iwl-debug.h"
10 #include "iwl-io.h"
11 #include "iwl-prph.h"
12 #include "iwl-csr.h"
13 #include "mvm.h"
14 #include "fw/api/rs.h"
15 #include "fw/img.h"
16
17 /*
18 * Will return 0 even if the cmd failed when RFKILL is asserted unless
19 * CMD_WANT_SKB is set in cmd->flags.
20 */
21 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
22 {
23 int ret;
24
25 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
26 if (WARN_ON(mvm->d3_test_active))
27 return -EIO;
28 #endif
29
30 /*
31 * Synchronous commands from this op-mode must hold
32 * the mutex, this ensures we don't try to send two
33 * (or more) synchronous commands at a time.
34 */
35 if (!(cmd->flags & CMD_ASYNC))
36 lockdep_assert_held(&mvm->mutex);
37
38 ret = iwl_trans_send_cmd(mvm->trans, cmd);
39
40 /*
41 * If the caller wants the SKB, then don't hide any problems, the
42 * caller might access the response buffer which will be NULL if
43 * the command failed.
44 */
45 if (cmd->flags & CMD_WANT_SKB)
46 return ret;
47
48 /*
49 * Silently ignore failures if RFKILL is asserted or
50 * we are in suspend\resume process
51 */
52 if (!ret || ret == -ERFKILL || ret == -EHOSTDOWN)
53 return 0;
54 return ret;
55 }
56
57 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
58 u32 flags, u16 len, const void *data)
59 {
60 struct iwl_host_cmd cmd = {
61 .id = id,
62 .len = { len, },
63 .data = { data, },
64 .flags = flags,
65 };
66
67 return iwl_mvm_send_cmd(mvm, &cmd);
68 }
69
70 /*
71 * We assume that the caller set the status to the success value
72 */
73 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
74 u32 *status)
75 {
76 struct iwl_rx_packet *pkt;
77 struct iwl_cmd_response *resp;
78 int ret, resp_len;
79
80 lockdep_assert_held(&mvm->mutex);
81
82 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
83 if (WARN_ON(mvm->d3_test_active))
84 return -EIO;
85 #endif
86
87 /*
88 * Only synchronous commands can wait for status,
89 * we use WANT_SKB so the caller can't.
90 */
91 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
92 "cmd flags %x", cmd->flags))
93 return -EINVAL;
94
95 cmd->flags |= CMD_WANT_SKB;
96
97 ret = iwl_trans_send_cmd(mvm->trans, cmd);
98 if (ret == -ERFKILL) {
99 /*
100 * The command failed because of RFKILL, don't update
101 * the status, leave it as success and return 0.
102 */
103 return 0;
104 } else if (ret) {
105 return ret;
106 }
107
108 pkt = cmd->resp_pkt;
109
110 resp_len = iwl_rx_packet_payload_len(pkt);
111 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
112 ret = -EIO;
113 goto out_free_resp;
114 }
115
116 resp = (void *)pkt->data;
117 *status = le32_to_cpu(resp->status);
118 out_free_resp:
119 iwl_free_resp(cmd);
120 return ret;
121 }
122
123 /*
124 * We assume that the caller set the status to the sucess value
125 */
126 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
127 const void *data, u32 *status)
128 {
129 struct iwl_host_cmd cmd = {
130 .id = id,
131 .len = { len, },
132 .data = { data, },
133 };
134
135 return iwl_mvm_send_cmd_status(mvm, &cmd, status);
136 }
137
138 #define IWL_DECLARE_RATE_INFO(r) \
139 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
140
141 /*
142 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
143 */
144 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
145 IWL_DECLARE_RATE_INFO(1),
146 IWL_DECLARE_RATE_INFO(2),
147 IWL_DECLARE_RATE_INFO(5),
148 IWL_DECLARE_RATE_INFO(11),
149 IWL_DECLARE_RATE_INFO(6),
150 IWL_DECLARE_RATE_INFO(9),
151 IWL_DECLARE_RATE_INFO(12),
152 IWL_DECLARE_RATE_INFO(18),
153 IWL_DECLARE_RATE_INFO(24),
154 IWL_DECLARE_RATE_INFO(36),
155 IWL_DECLARE_RATE_INFO(48),
156 IWL_DECLARE_RATE_INFO(54),
157 };
158
159 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
160 enum nl80211_band band)
161 {
162 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
163 int idx;
164 int band_offset = 0;
165
166 /* Legacy rate format, search for match in table */
167 if (band != NL80211_BAND_2GHZ)
168 band_offset = IWL_FIRST_OFDM_RATE;
169 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
170 if (fw_rate_idx_to_plcp[idx] == rate)
171 return idx - band_offset;
172
173 return -1;
174 }
175
176 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
177 {
178 /* Get PLCP rate for tx_cmd->rate_n_flags */
179 return fw_rate_idx_to_plcp[rate_idx];
180 }
181
182 u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac)
183 {
184 static const u8 mac80211_ac_to_ucode_ac[] = {
185 AC_VO,
186 AC_VI,
187 AC_BE,
188 AC_BK
189 };
190
191 return mac80211_ac_to_ucode_ac[ac];
192 }
193
194 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
195 {
196 struct iwl_rx_packet *pkt = rxb_addr(rxb);
197 struct iwl_error_resp *err_resp = (void *)pkt->data;
198
199 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
200 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
201 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
202 le16_to_cpu(err_resp->bad_cmd_seq_num),
203 le32_to_cpu(err_resp->error_service));
204 IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n",
205 le64_to_cpu(err_resp->timestamp));
206 }
207
208 /*
209 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
210 * The parameter should also be a combination of ANT_[ABC].
211 */
212 u8 first_antenna(u8 mask)
213 {
214 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
215 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
216 return BIT(0);
217 return BIT(ffs(mask) - 1);
218 }
219
220 /*
221 * Toggles between TX antennas to send the probe request on.
222 * Receives the bitmask of valid TX antennas and the *index* used
223 * for the last TX, and returns the next valid *index* to use.
224 * In order to set it in the tx_cmd, must do BIT(idx).
225 */
226 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
227 {
228 u8 ind = last_idx;
229 int i;
230
231 for (i = 0; i < MAX_ANT_NUM; i++) {
232 ind = (ind + 1) % MAX_ANT_NUM;
233 if (valid & BIT(ind))
234 return ind;
235 }
236
237 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
238 return last_idx;
239 }
240
241 /*
242 * Note: This structure is read from the device with IO accesses,
243 * and the reading already does the endian conversion. As it is
244 * read with u32-sized accesses, any members with a different size
245 * need to be ordered correctly though!
246 */
247 struct iwl_error_event_table_v1 {
248 u32 valid; /* (nonzero) valid, (0) log is empty */
249 u32 error_id; /* type of error */
250 u32 pc; /* program counter */
251 u32 blink1; /* branch link */
252 u32 blink2; /* branch link */
253 u32 ilink1; /* interrupt link */
254 u32 ilink2; /* interrupt link */
255 u32 data1; /* error-specific data */
256 u32 data2; /* error-specific data */
257 u32 data3; /* error-specific data */
258 u32 bcon_time; /* beacon timer */
259 u32 tsf_low; /* network timestamp function timer */
260 u32 tsf_hi; /* network timestamp function timer */
261 u32 gp1; /* GP1 timer register */
262 u32 gp2; /* GP2 timer register */
263 u32 gp3; /* GP3 timer register */
264 u32 ucode_ver; /* uCode version */
265 u32 hw_ver; /* HW Silicon version */
266 u32 brd_ver; /* HW board version */
267 u32 log_pc; /* log program counter */
268 u32 frame_ptr; /* frame pointer */
269 u32 stack_ptr; /* stack pointer */
270 u32 hcmd; /* last host command header */
271 u32 isr0; /* isr status register LMPM_NIC_ISR0:
272 * rxtx_flag */
273 u32 isr1; /* isr status register LMPM_NIC_ISR1:
274 * host_flag */
275 u32 isr2; /* isr status register LMPM_NIC_ISR2:
276 * enc_flag */
277 u32 isr3; /* isr status register LMPM_NIC_ISR3:
278 * time_flag */
279 u32 isr4; /* isr status register LMPM_NIC_ISR4:
280 * wico interrupt */
281 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */
282 u32 wait_event; /* wait event() caller address */
283 u32 l2p_control; /* L2pControlField */
284 u32 l2p_duration; /* L2pDurationField */
285 u32 l2p_mhvalid; /* L2pMhValidBits */
286 u32 l2p_addr_match; /* L2pAddrMatchStat */
287 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
288 * (LMPM_PMG_SEL) */
289 u32 u_timestamp; /* indicate when the date and time of the
290 * compilation */
291 u32 flow_handler; /* FH read/write pointers, RX credit */
292 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;
293
294 struct iwl_error_event_table {
295 u32 valid; /* (nonzero) valid, (0) log is empty */
296 u32 error_id; /* type of error */
297 u32 trm_hw_status0; /* TRM HW status */
298 u32 trm_hw_status1; /* TRM HW status */
299 u32 blink2; /* branch link */
300 u32 ilink1; /* interrupt link */
301 u32 ilink2; /* interrupt link */
302 u32 data1; /* error-specific data */
303 u32 data2; /* error-specific data */
304 u32 data3; /* error-specific data */
305 u32 bcon_time; /* beacon timer */
306 u32 tsf_low; /* network timestamp function timer */
307 u32 tsf_hi; /* network timestamp function timer */
308 u32 gp1; /* GP1 timer register */
309 u32 gp2; /* GP2 timer register */
310 u32 fw_rev_type; /* firmware revision type */
311 u32 major; /* uCode version major */
312 u32 minor; /* uCode version minor */
313 u32 hw_ver; /* HW Silicon version */
314 u32 brd_ver; /* HW board version */
315 u32 log_pc; /* log program counter */
316 u32 frame_ptr; /* frame pointer */
317 u32 stack_ptr; /* stack pointer */
318 u32 hcmd; /* last host command header */
319 u32 isr0; /* isr status register LMPM_NIC_ISR0:
320 * rxtx_flag */
321 u32 isr1; /* isr status register LMPM_NIC_ISR1:
322 * host_flag */
323 u32 isr2; /* isr status register LMPM_NIC_ISR2:
324 * enc_flag */
325 u32 isr3; /* isr status register LMPM_NIC_ISR3:
326 * time_flag */
327 u32 isr4; /* isr status register LMPM_NIC_ISR4:
328 * wico interrupt */
329 u32 last_cmd_id; /* last HCMD id handled by the firmware */
330 u32 wait_event; /* wait event() caller address */
331 u32 l2p_control; /* L2pControlField */
332 u32 l2p_duration; /* L2pDurationField */
333 u32 l2p_mhvalid; /* L2pMhValidBits */
334 u32 l2p_addr_match; /* L2pAddrMatchStat */
335 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
336 * (LMPM_PMG_SEL) */
337 u32 u_timestamp; /* indicate when the date and time of the
338 * compilation */
339 u32 flow_handler; /* FH read/write pointers, RX credit */
340 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */;
341
342 /*
343 * UMAC error struct - relevant starting from family 8000 chip.
344 * Note: This structure is read from the device with IO accesses,
345 * and the reading already does the endian conversion. As it is
346 * read with u32-sized accesses, any members with a different size
347 * need to be ordered correctly though!
348 */
349 struct iwl_umac_error_event_table {
350 u32 valid; /* (nonzero) valid, (0) log is empty */
351 u32 error_id; /* type of error */
352 u32 blink1; /* branch link */
353 u32 blink2; /* branch link */
354 u32 ilink1; /* interrupt link */
355 u32 ilink2; /* interrupt link */
356 u32 data1; /* error-specific data */
357 u32 data2; /* error-specific data */
358 u32 data3; /* error-specific data */
359 u32 umac_major;
360 u32 umac_minor;
361 u32 frame_pointer; /* core register 27*/
362 u32 stack_pointer; /* core register 28 */
363 u32 cmd_header; /* latest host cmd sent to UMAC */
364 u32 nic_isr_pref; /* ISR status register */
365 } __packed;
366
367 #define ERROR_START_OFFSET (1 * sizeof(u32))
368 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
369
370 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
371 {
372 struct iwl_trans *trans = mvm->trans;
373 struct iwl_umac_error_event_table table = {};
374 u32 base = mvm->trans->dbg.umac_error_event_table;
375
376 if (!base &&
377 !(mvm->trans->dbg.error_event_table_tlv_status &
378 IWL_ERROR_EVENT_TABLE_UMAC))
379 return;
380
381 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
382
383 if (table.valid)
384 mvm->fwrt.dump.umac_err_id = table.error_id;
385
386 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
387 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
388 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
389 mvm->status, table.valid);
390 }
391
392 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
393 iwl_fw_lookup_assert_desc(table.error_id));
394 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
395 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
396 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
397 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
398 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
399 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
400 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
401 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
402 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
403 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
404 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
405 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
406 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
407 }
408
409 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num)
410 {
411 struct iwl_trans *trans = mvm->trans;
412 struct iwl_error_event_table table = {};
413 u32 val, base = mvm->trans->dbg.lmac_error_event_table[lmac_num];
414
415 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) {
416 if (!base)
417 base = mvm->fw->init_errlog_ptr;
418 } else {
419 if (!base)
420 base = mvm->fw->inst_errlog_ptr;
421 }
422
423 if (base < 0x400000) {
424 IWL_ERR(mvm,
425 "Not valid error log pointer 0x%08X for %s uCode\n",
426 base,
427 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT)
428 ? "Init" : "RT");
429 return;
430 }
431
432 /* check if there is a HW error */
433 val = iwl_trans_read_mem32(trans, base);
434 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) {
435 int err;
436
437 IWL_ERR(trans, "HW error, resetting before reading\n");
438
439 /* reset the device */
440 iwl_trans_sw_reset(trans);
441
442 err = iwl_finish_nic_init(trans, trans->trans_cfg);
443 if (err)
444 return;
445 }
446
447 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
448
449 if (table.valid)
450 mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id;
451
452 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
453 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
454 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
455 mvm->status, table.valid);
456 }
457
458 /* Do not change this output - scripts rely on it */
459
460 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
461
462 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
463 iwl_fw_lookup_assert_desc(table.error_id));
464 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
465 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1);
466 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
467 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
468 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
469 IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
470 IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
471 IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
472 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
473 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
474 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
475 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
476 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
477 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type);
478 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
479 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
480 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
481 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
482 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
483 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
484 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
485 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
486 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
487 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
488 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id);
489 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
490 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
491 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
492 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
493 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
494 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
495 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
496 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
497 }
498
499 static void iwl_mvm_dump_iml_error_log(struct iwl_mvm *mvm)
500 {
501 struct iwl_trans *trans = mvm->trans;
502 u32 error, data1;
503
504 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) {
505 error = UMAG_SB_CPU_2_STATUS;
506 data1 = UMAG_SB_CPU_1_STATUS;
507 } else if (mvm->trans->trans_cfg->device_family >=
508 IWL_DEVICE_FAMILY_8000) {
509 error = SB_CPU_2_STATUS;
510 data1 = SB_CPU_1_STATUS;
511 } else {
512 return;
513 }
514
515 error = iwl_read_umac_prph(trans, UMAG_SB_CPU_2_STATUS);
516
517 IWL_ERR(trans, "IML/ROM dump:\n");
518
519 if (error & 0xFFFF0000)
520 IWL_ERR(trans, "0x%04X | IML/ROM SYSASSERT\n", error >> 16);
521
522 IWL_ERR(mvm, "0x%08X | IML/ROM error/state\n", error);
523 IWL_ERR(mvm, "0x%08X | IML/ROM data1\n",
524 iwl_read_umac_prph(trans, data1));
525
526 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000)
527 IWL_ERR(mvm, "0x%08X | IML/ROM WFPM_AUTH_KEY_0\n",
528 iwl_read_umac_prph(trans, SB_MODIFY_CFG_FLAG));
529 }
530
531 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
532 {
533 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) {
534 IWL_ERR(mvm,
535 "DEVICE_ENABLED bit is not set. Aborting dump.\n");
536 return;
537 }
538
539 iwl_mvm_dump_lmac_error_log(mvm, 0);
540
541 if (mvm->trans->dbg.lmac_error_event_table[1])
542 iwl_mvm_dump_lmac_error_log(mvm, 1);
543
544 iwl_mvm_dump_umac_error_log(mvm);
545
546 iwl_mvm_dump_iml_error_log(mvm);
547
548 iwl_fw_error_print_fseq_regs(&mvm->fwrt);
549 }
550
551 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
552 int tid, int frame_limit, u16 ssn)
553 {
554 struct iwl_scd_txq_cfg_cmd cmd = {
555 .scd_queue = queue,
556 .action = SCD_CFG_ENABLE_QUEUE,
557 .window = frame_limit,
558 .sta_id = sta_id,
559 .ssn = cpu_to_le16(ssn),
560 .tx_fifo = fifo,
561 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
562 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
563 .tid = tid,
564 };
565 int ret;
566
567 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
568 return -EINVAL;
569
570 if (WARN(mvm->queue_info[queue].tid_bitmap == 0,
571 "Trying to reconfig unallocated queue %d\n", queue))
572 return -ENXIO;
573
574 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
575
576 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
577 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
578 queue, fifo, ret);
579
580 return ret;
581 }
582
583 /**
584 * iwl_mvm_send_lq_cmd() - Send link quality command
585 * @mvm: Driver data.
586 * @lq: Link quality command to send.
587 *
588 * The link quality command is sent as the last step of station creation.
589 * This is the special case in which init is set and we call a callback in
590 * this case to clear the state indicating that station creation is in
591 * progress.
592 */
593 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq)
594 {
595 struct iwl_host_cmd cmd = {
596 .id = LQ_CMD,
597 .len = { sizeof(struct iwl_lq_cmd), },
598 .flags = CMD_ASYNC,
599 .data = { lq, },
600 };
601
602 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA ||
603 iwl_mvm_has_tlc_offload(mvm)))
604 return -EINVAL;
605
606 return iwl_mvm_send_cmd(mvm, &cmd);
607 }
608
609 /**
610 * iwl_mvm_update_smps - Get a request to change the SMPS mode
611 * @mvm: Driver data.
612 * @vif: Pointer to the ieee80211_vif structure
613 * @req_type: The part of the driver who call for a change.
614 * @smps_request: The request to change the SMPS mode.
615 *
616 * Get a requst to change the SMPS mode,
617 * and change it according to all other requests in the driver.
618 */
619 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
620 enum iwl_mvm_smps_type_request req_type,
621 enum ieee80211_smps_mode smps_request)
622 {
623 struct iwl_mvm_vif *mvmvif;
624 enum ieee80211_smps_mode smps_mode = IEEE80211_SMPS_AUTOMATIC;
625 int i;
626
627 lockdep_assert_held(&mvm->mutex);
628
629 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
630 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
631 return;
632
633 if (vif->type != NL80211_IFTYPE_STATION)
634 return;
635
636 mvmvif = iwl_mvm_vif_from_mac80211(vif);
637 mvmvif->smps_requests[req_type] = smps_request;
638 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
639 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
640 smps_mode = IEEE80211_SMPS_STATIC;
641 break;
642 }
643 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
644 smps_mode = IEEE80211_SMPS_DYNAMIC;
645 }
646
647 ieee80211_request_smps(vif, smps_mode);
648 }
649
650 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
651 {
652 struct iwl_statistics_cmd scmd = {
653 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
654 };
655 struct iwl_host_cmd cmd = {
656 .id = STATISTICS_CMD,
657 .len[0] = sizeof(scmd),
658 .data[0] = &scmd,
659 .flags = CMD_WANT_SKB,
660 };
661 int ret;
662
663 ret = iwl_mvm_send_cmd(mvm, &cmd);
664 if (ret)
665 return ret;
666
667 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
668 iwl_free_resp(&cmd);
669
670 if (clear)
671 iwl_mvm_accu_radio_stats(mvm);
672
673 return 0;
674 }
675
676 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
677 {
678 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
679 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
680 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
681 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
682 }
683
684 struct iwl_mvm_diversity_iter_data {
685 struct iwl_mvm_phy_ctxt *ctxt;
686 bool result;
687 };
688
689 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
690 struct ieee80211_vif *vif)
691 {
692 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
693 struct iwl_mvm_diversity_iter_data *data = _data;
694 int i;
695
696 if (mvmvif->phy_ctxt != data->ctxt)
697 return;
698
699 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
700 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
701 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC) {
702 data->result = false;
703 break;
704 }
705 }
706 }
707
708 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm,
709 struct iwl_mvm_phy_ctxt *ctxt)
710 {
711 struct iwl_mvm_diversity_iter_data data = {
712 .ctxt = ctxt,
713 .result = true,
714 };
715
716 lockdep_assert_held(&mvm->mutex);
717
718 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
719 return false;
720
721 if (mvm->cfg->rx_with_siso_diversity)
722 return false;
723
724 ieee80211_iterate_active_interfaces_atomic(
725 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
726 iwl_mvm_diversity_iter, &data);
727
728 return data.result;
729 }
730
731 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm,
732 bool low_latency, u16 mac_id)
733 {
734 struct iwl_mac_low_latency_cmd cmd = {
735 .mac_id = cpu_to_le32(mac_id)
736 };
737
738 if (!fw_has_capa(&mvm->fw->ucode_capa,
739 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA))
740 return;
741
742 if (low_latency) {
743 /* currently we don't care about the direction */
744 cmd.low_latency_rx = 1;
745 cmd.low_latency_tx = 1;
746 }
747
748 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD,
749 MAC_CONF_GROUP, 0),
750 0, sizeof(cmd), &cmd))
751 IWL_ERR(mvm, "Failed to send low latency command\n");
752 }
753
754 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
755 bool low_latency,
756 enum iwl_mvm_low_latency_cause cause)
757 {
758 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
759 int res;
760 bool prev;
761
762 lockdep_assert_held(&mvm->mutex);
763
764 prev = iwl_mvm_vif_low_latency(mvmvif);
765 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause);
766
767 low_latency = iwl_mvm_vif_low_latency(mvmvif);
768
769 if (low_latency == prev)
770 return 0;
771
772 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id);
773
774 res = iwl_mvm_update_quotas(mvm, false, NULL);
775 if (res)
776 return res;
777
778 iwl_mvm_bt_coex_vif_change(mvm);
779
780 return iwl_mvm_power_update_mac(mvm);
781 }
782
783 struct iwl_mvm_low_latency_iter {
784 bool result;
785 bool result_per_band[NUM_NL80211_BANDS];
786 };
787
788 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
789 {
790 struct iwl_mvm_low_latency_iter *result = _data;
791 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
792 enum nl80211_band band;
793
794 if (iwl_mvm_vif_low_latency(mvmvif)) {
795 result->result = true;
796
797 if (!mvmvif->phy_ctxt)
798 return;
799
800 band = mvmvif->phy_ctxt->channel->band;
801 result->result_per_band[band] = true;
802 }
803 }
804
805 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
806 {
807 struct iwl_mvm_low_latency_iter data = {};
808
809 ieee80211_iterate_active_interfaces_atomic(
810 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
811 iwl_mvm_ll_iter, &data);
812
813 return data.result;
814 }
815
816 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band)
817 {
818 struct iwl_mvm_low_latency_iter data = {};
819
820 ieee80211_iterate_active_interfaces_atomic(
821 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
822 iwl_mvm_ll_iter, &data);
823
824 return data.result_per_band[band];
825 }
826
827 struct iwl_bss_iter_data {
828 struct ieee80211_vif *vif;
829 bool error;
830 };
831
832 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
833 struct ieee80211_vif *vif)
834 {
835 struct iwl_bss_iter_data *data = _data;
836
837 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
838 return;
839
840 if (data->vif) {
841 data->error = true;
842 return;
843 }
844
845 data->vif = vif;
846 }
847
848 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
849 {
850 struct iwl_bss_iter_data bss_iter_data = {};
851
852 ieee80211_iterate_active_interfaces_atomic(
853 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
854 iwl_mvm_bss_iface_iterator, &bss_iter_data);
855
856 if (bss_iter_data.error) {
857 IWL_ERR(mvm, "More than one managed interface active!\n");
858 return ERR_PTR(-EINVAL);
859 }
860
861 return bss_iter_data.vif;
862 }
863
864 struct iwl_bss_find_iter_data {
865 struct ieee80211_vif *vif;
866 u32 macid;
867 };
868
869 static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac,
870 struct ieee80211_vif *vif)
871 {
872 struct iwl_bss_find_iter_data *data = _data;
873 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
874
875 if (mvmvif->id == data->macid)
876 data->vif = vif;
877 }
878
879 struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid)
880 {
881 struct iwl_bss_find_iter_data data = {
882 .macid = macid,
883 };
884
885 lockdep_assert_held(&mvm->mutex);
886
887 ieee80211_iterate_active_interfaces_atomic(
888 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
889 iwl_mvm_bss_find_iface_iterator, &data);
890
891 return data.vif;
892 }
893
894 struct iwl_sta_iter_data {
895 bool assoc;
896 };
897
898 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
899 struct ieee80211_vif *vif)
900 {
901 struct iwl_sta_iter_data *data = _data;
902
903 if (vif->type != NL80211_IFTYPE_STATION)
904 return;
905
906 if (vif->bss_conf.assoc)
907 data->assoc = true;
908 }
909
910 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
911 {
912 struct iwl_sta_iter_data data = {
913 .assoc = false,
914 };
915
916 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
917 IEEE80211_IFACE_ITER_NORMAL,
918 iwl_mvm_sta_iface_iterator,
919 &data);
920 return data.assoc;
921 }
922
923 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
924 struct ieee80211_vif *vif,
925 bool tdls, bool cmd_q)
926 {
927 struct iwl_fw_dbg_trigger_tlv *trigger;
928 struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
929 unsigned int default_timeout = cmd_q ?
930 IWL_DEF_WD_TIMEOUT :
931 mvm->trans->trans_cfg->base_params->wd_timeout;
932
933 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) {
934 /*
935 * We can't know when the station is asleep or awake, so we
936 * must disable the queue hang detection.
937 */
938 if (fw_has_capa(&mvm->fw->ucode_capa,
939 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
940 vif && vif->type == NL80211_IFTYPE_AP)
941 return IWL_WATCHDOG_DISABLED;
942 return default_timeout;
943 }
944
945 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
946 txq_timer = (void *)trigger->data;
947
948 if (tdls)
949 return le32_to_cpu(txq_timer->tdls);
950
951 if (cmd_q)
952 return le32_to_cpu(txq_timer->command_queue);
953
954 if (WARN_ON(!vif))
955 return default_timeout;
956
957 switch (ieee80211_vif_type_p2p(vif)) {
958 case NL80211_IFTYPE_ADHOC:
959 return le32_to_cpu(txq_timer->ibss);
960 case NL80211_IFTYPE_STATION:
961 return le32_to_cpu(txq_timer->bss);
962 case NL80211_IFTYPE_AP:
963 return le32_to_cpu(txq_timer->softap);
964 case NL80211_IFTYPE_P2P_CLIENT:
965 return le32_to_cpu(txq_timer->p2p_client);
966 case NL80211_IFTYPE_P2P_GO:
967 return le32_to_cpu(txq_timer->p2p_go);
968 case NL80211_IFTYPE_P2P_DEVICE:
969 return le32_to_cpu(txq_timer->p2p_device);
970 case NL80211_IFTYPE_MONITOR:
971 return default_timeout;
972 default:
973 WARN_ON(1);
974 return mvm->trans->trans_cfg->base_params->wd_timeout;
975 }
976 }
977
978 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
979 const char *errmsg)
980 {
981 struct iwl_fw_dbg_trigger_tlv *trig;
982 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
983
984 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
985 FW_DBG_TRIGGER_MLME);
986 if (!trig)
987 goto out;
988
989 trig_mlme = (void *)trig->data;
990
991 if (trig_mlme->stop_connection_loss &&
992 --trig_mlme->stop_connection_loss)
993 goto out;
994
995 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
996
997 out:
998 ieee80211_connection_loss(vif);
999 }
1000
1001 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
1002 struct ieee80211_vif *vif,
1003 const struct ieee80211_sta *sta,
1004 u16 tid)
1005 {
1006 struct iwl_fw_dbg_trigger_tlv *trig;
1007 struct iwl_fw_dbg_trigger_ba *ba_trig;
1008
1009 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
1010 FW_DBG_TRIGGER_BA);
1011 if (!trig)
1012 return;
1013
1014 ba_trig = (void *)trig->data;
1015
1016 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid)))
1017 return;
1018
1019 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1020 "Frame from %pM timed out, tid %d",
1021 sta->addr, tid);
1022 }
1023
1024 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed)
1025 {
1026 if (!elapsed)
1027 return 0;
1028
1029 return (100 * airtime / elapsed) / USEC_PER_MSEC;
1030 }
1031
1032 static enum iwl_mvm_traffic_load
1033 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed)
1034 {
1035 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed);
1036
1037 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH)
1038 return IWL_MVM_TRAFFIC_HIGH;
1039 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH)
1040 return IWL_MVM_TRAFFIC_MEDIUM;
1041
1042 return IWL_MVM_TRAFFIC_LOW;
1043 }
1044
1045 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
1046 {
1047 struct iwl_mvm *mvm = _data;
1048 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1049 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC;
1050
1051 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER)
1052 return;
1053
1054 low_latency = mvm->tcm.result.low_latency[mvmvif->id];
1055
1056 if (!mvm->tcm.result.change[mvmvif->id] &&
1057 prev == low_latency) {
1058 iwl_mvm_update_quotas(mvm, false, NULL);
1059 return;
1060 }
1061
1062 if (prev != low_latency) {
1063 /* this sends traffic load and updates quota as well */
1064 iwl_mvm_update_low_latency(mvm, vif, low_latency,
1065 LOW_LATENCY_TRAFFIC);
1066 } else {
1067 iwl_mvm_update_quotas(mvm, false, NULL);
1068 }
1069 }
1070
1071 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm)
1072 {
1073 mutex_lock(&mvm->mutex);
1074
1075 ieee80211_iterate_active_interfaces(
1076 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1077 iwl_mvm_tcm_iter, mvm);
1078
1079 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1080 iwl_mvm_config_scan(mvm);
1081
1082 mutex_unlock(&mvm->mutex);
1083 }
1084
1085 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk)
1086 {
1087 struct iwl_mvm *mvm;
1088 struct iwl_mvm_vif *mvmvif;
1089 struct ieee80211_vif *vif;
1090
1091 mvmvif = container_of(wk, struct iwl_mvm_vif,
1092 uapsd_nonagg_detected_wk.work);
1093 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
1094 mvm = mvmvif->mvm;
1095
1096 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions)
1097 return;
1098
1099 /* remember that this AP is broken */
1100 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr,
1101 vif->bss_conf.bssid, ETH_ALEN);
1102 mvm->uapsd_noagg_bssid_write_idx++;
1103 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN)
1104 mvm->uapsd_noagg_bssid_write_idx = 0;
1105
1106 iwl_mvm_connection_loss(mvm, vif,
1107 "AP isn't using AMPDU with uAPSD enabled");
1108 }
1109
1110 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm,
1111 struct ieee80211_vif *vif)
1112 {
1113 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1114
1115 if (vif->type != NL80211_IFTYPE_STATION)
1116 return;
1117
1118 if (!vif->bss_conf.assoc)
1119 return;
1120
1121 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd &&
1122 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd &&
1123 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd &&
1124 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd)
1125 return;
1126
1127 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected)
1128 return;
1129
1130 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true;
1131 IWL_INFO(mvm,
1132 "detected AP should do aggregation but isn't, likely due to U-APSD\n");
1133 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ);
1134 }
1135
1136 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm,
1137 unsigned int elapsed,
1138 int mac)
1139 {
1140 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes;
1141 u64 tpt;
1142 unsigned long rate;
1143 struct ieee80211_vif *vif;
1144
1145 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate);
1146
1147 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions ||
1148 mvm->tcm.data[mac].uapsd_nonagg_detect.detected)
1149 return;
1150
1151 if (iwl_mvm_has_new_rx_api(mvm)) {
1152 tpt = 8 * bytes; /* kbps */
1153 do_div(tpt, elapsed);
1154 rate *= 1000; /* kbps */
1155 if (tpt < 22 * rate / 100)
1156 return;
1157 } else {
1158 /*
1159 * the rate here is actually the threshold, in 100Kbps units,
1160 * so do the needed conversion from bytes to 100Kbps:
1161 * 100kb = bits / (100 * 1000),
1162 * 100kbps = 100kb / (msecs / 1000) ==
1163 * (bits / (100 * 1000)) / (msecs / 1000) ==
1164 * bits / (100 * msecs)
1165 */
1166 tpt = (8 * bytes);
1167 do_div(tpt, elapsed * 100);
1168 if (tpt < rate)
1169 return;
1170 }
1171
1172 rcu_read_lock();
1173 vif = rcu_dereference(mvm->vif_id_to_mac[mac]);
1174 if (vif)
1175 iwl_mvm_uapsd_agg_disconnect(mvm, vif);
1176 rcu_read_unlock();
1177 }
1178
1179 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac,
1180 struct ieee80211_vif *vif)
1181 {
1182 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1183 u32 *band = _data;
1184
1185 if (!mvmvif->phy_ctxt)
1186 return;
1187
1188 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band;
1189 }
1190
1191 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm,
1192 unsigned long ts,
1193 bool handle_uapsd)
1194 {
1195 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts);
1196 unsigned int uapsd_elapsed =
1197 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts);
1198 u32 total_airtime = 0;
1199 u32 band_airtime[NUM_NL80211_BANDS] = {0};
1200 u32 band[NUM_MAC_INDEX_DRIVER] = {0};
1201 int ac, mac, i;
1202 bool low_latency = false;
1203 enum iwl_mvm_traffic_load load, band_load;
1204 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD);
1205
1206 if (handle_ll)
1207 mvm->tcm.ll_ts = ts;
1208 if (handle_uapsd)
1209 mvm->tcm.uapsd_nonagg_ts = ts;
1210
1211 mvm->tcm.result.elapsed = elapsed;
1212
1213 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1214 IEEE80211_IFACE_ITER_NORMAL,
1215 iwl_mvm_tcm_iterator,
1216 &band);
1217
1218 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1219 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1220 u32 vo_vi_pkts = 0;
1221 u32 airtime = mdata->rx.airtime + mdata->tx.airtime;
1222
1223 total_airtime += airtime;
1224 band_airtime[band[mac]] += airtime;
1225
1226 load = iwl_mvm_tcm_load(mvm, airtime, elapsed);
1227 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac];
1228 mvm->tcm.result.load[mac] = load;
1229 mvm->tcm.result.airtime[mac] = airtime;
1230
1231 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++)
1232 vo_vi_pkts += mdata->rx.pkts[ac] +
1233 mdata->tx.pkts[ac];
1234
1235 /* enable immediately with enough packets but defer disabling */
1236 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH)
1237 mvm->tcm.result.low_latency[mac] = true;
1238 else if (handle_ll)
1239 mvm->tcm.result.low_latency[mac] = false;
1240
1241 if (handle_ll) {
1242 /* clear old data */
1243 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1244 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1245 }
1246 low_latency |= mvm->tcm.result.low_latency[mac];
1247
1248 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd)
1249 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed,
1250 mac);
1251 /* clear old data */
1252 if (handle_uapsd)
1253 mdata->uapsd_nonagg_detect.rx_bytes = 0;
1254 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1255 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1256 }
1257
1258 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed);
1259 mvm->tcm.result.global_load = load;
1260
1261 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1262 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed);
1263 mvm->tcm.result.band_load[i] = band_load;
1264 }
1265
1266 /*
1267 * If the current load isn't low we need to force re-evaluation
1268 * in the TCM period, so that we can return to low load if there
1269 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get
1270 * triggered by traffic).
1271 */
1272 if (load != IWL_MVM_TRAFFIC_LOW)
1273 return MVM_TCM_PERIOD;
1274 /*
1275 * If low-latency is active we need to force re-evaluation after
1276 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency
1277 * when there's no traffic at all.
1278 */
1279 if (low_latency)
1280 return MVM_LL_PERIOD;
1281 /*
1282 * Otherwise, we don't need to run the work struct because we're
1283 * in the default "idle" state - traffic indication is low (which
1284 * also covers the "no traffic" case) and low-latency is disabled
1285 * so there's no state that may need to be disabled when there's
1286 * no traffic at all.
1287 *
1288 * Note that this has no impact on the regular scheduling of the
1289 * updates triggered by traffic - those happen whenever one of the
1290 * two timeouts expire (if there's traffic at all.)
1291 */
1292 return 0;
1293 }
1294
1295 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm)
1296 {
1297 unsigned long ts = jiffies;
1298 bool handle_uapsd =
1299 time_after(ts, mvm->tcm.uapsd_nonagg_ts +
1300 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD));
1301
1302 spin_lock(&mvm->tcm.lock);
1303 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1304 spin_unlock(&mvm->tcm.lock);
1305 return;
1306 }
1307 spin_unlock(&mvm->tcm.lock);
1308
1309 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) {
1310 mutex_lock(&mvm->mutex);
1311 if (iwl_mvm_request_statistics(mvm, true))
1312 handle_uapsd = false;
1313 mutex_unlock(&mvm->mutex);
1314 }
1315
1316 spin_lock(&mvm->tcm.lock);
1317 /* re-check if somebody else won the recheck race */
1318 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1319 /* calculate statistics */
1320 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts,
1321 handle_uapsd);
1322
1323 /* the memset needs to be visible before the timestamp */
1324 smp_mb();
1325 mvm->tcm.ts = ts;
1326 if (work_delay)
1327 schedule_delayed_work(&mvm->tcm.work, work_delay);
1328 }
1329 spin_unlock(&mvm->tcm.lock);
1330
1331 iwl_mvm_tcm_results(mvm);
1332 }
1333
1334 void iwl_mvm_tcm_work(struct work_struct *work)
1335 {
1336 struct delayed_work *delayed_work = to_delayed_work(work);
1337 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
1338 tcm.work);
1339
1340 iwl_mvm_recalc_tcm(mvm);
1341 }
1342
1343 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel)
1344 {
1345 spin_lock_bh(&mvm->tcm.lock);
1346 mvm->tcm.paused = true;
1347 spin_unlock_bh(&mvm->tcm.lock);
1348 if (with_cancel)
1349 cancel_delayed_work_sync(&mvm->tcm.work);
1350 }
1351
1352 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm)
1353 {
1354 int mac;
1355 bool low_latency = false;
1356
1357 spin_lock_bh(&mvm->tcm.lock);
1358 mvm->tcm.ts = jiffies;
1359 mvm->tcm.ll_ts = jiffies;
1360 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1361 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1362
1363 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1364 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1365 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1366 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1367
1368 if (mvm->tcm.result.low_latency[mac])
1369 low_latency = true;
1370 }
1371 /* The TCM data needs to be reset before "paused" flag changes */
1372 smp_mb();
1373 mvm->tcm.paused = false;
1374
1375 /*
1376 * if the current load is not low or low latency is active, force
1377 * re-evaluation to cover the case of no traffic.
1378 */
1379 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW)
1380 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD);
1381 else if (low_latency)
1382 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD);
1383
1384 spin_unlock_bh(&mvm->tcm.lock);
1385 }
1386
1387 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1388 {
1389 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1390
1391 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk,
1392 iwl_mvm_tcm_uapsd_nonagg_detected_wk);
1393 }
1394
1395 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1396 {
1397 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1398
1399 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk);
1400 }
1401
1402 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm)
1403 {
1404 u32 reg_addr = DEVICE_SYSTEM_TIME_REG;
1405
1406 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 &&
1407 mvm->trans->cfg->gp2_reg_addr)
1408 reg_addr = mvm->trans->cfg->gp2_reg_addr;
1409
1410 return iwl_read_prph(mvm->trans, reg_addr);
1411 }
1412
1413 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, int clock_type,
1414 u32 *gp2, u64 *boottime, ktime_t *realtime)
1415 {
1416 bool ps_disabled;
1417
1418 lockdep_assert_held(&mvm->mutex);
1419
1420 /* Disable power save when reading GP2 */
1421 ps_disabled = mvm->ps_disabled;
1422 if (!ps_disabled) {
1423 mvm->ps_disabled = true;
1424 iwl_mvm_power_update_device(mvm);
1425 }
1426
1427 *gp2 = iwl_mvm_get_systime(mvm);
1428
1429 if (clock_type == CLOCK_BOOTTIME && boottime)
1430 *boottime = ktime_get_boottime_ns();
1431 else if (clock_type == CLOCK_REALTIME && realtime)
1432 *realtime = ktime_get_real();
1433
1434 if (!ps_disabled) {
1435 mvm->ps_disabled = ps_disabled;
1436 iwl_mvm_power_update_device(mvm);
1437 }
1438 }
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