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Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
[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, 2018-2020 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;
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_AP)
634 smps_mode = IEEE80211_SMPS_OFF;
635 else
636 smps_mode = IEEE80211_SMPS_AUTOMATIC;
637
638 mvmvif = iwl_mvm_vif_from_mac80211(vif);
639 mvmvif->smps_requests[req_type] = smps_request;
640 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
641 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
642 smps_mode = IEEE80211_SMPS_STATIC;
643 break;
644 }
645 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
646 smps_mode = IEEE80211_SMPS_DYNAMIC;
647 }
648
649 ieee80211_request_smps(vif, smps_mode);
650 }
651
652 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
653 {
654 struct iwl_statistics_cmd scmd = {
655 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
656 };
657 struct iwl_host_cmd cmd = {
658 .id = STATISTICS_CMD,
659 .len[0] = sizeof(scmd),
660 .data[0] = &scmd,
661 .flags = CMD_WANT_SKB,
662 };
663 int ret;
664
665 ret = iwl_mvm_send_cmd(mvm, &cmd);
666 if (ret)
667 return ret;
668
669 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
670 iwl_free_resp(&cmd);
671
672 if (clear)
673 iwl_mvm_accu_radio_stats(mvm);
674
675 return 0;
676 }
677
678 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
679 {
680 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
681 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
682 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
683 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
684 }
685
686 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
687 struct ieee80211_vif *vif)
688 {
689 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
690 bool *result = _data;
691 int i;
692
693 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
694 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
695 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
696 *result = false;
697 }
698 }
699
700 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
701 {
702 bool result = true;
703
704 lockdep_assert_held(&mvm->mutex);
705
706 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
707 return false;
708
709 if (mvm->cfg->rx_with_siso_diversity)
710 return false;
711
712 ieee80211_iterate_active_interfaces_atomic(
713 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
714 iwl_mvm_diversity_iter, &result);
715
716 return result;
717 }
718
719 void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm,
720 bool low_latency, u16 mac_id)
721 {
722 struct iwl_mac_low_latency_cmd cmd = {
723 .mac_id = cpu_to_le32(mac_id)
724 };
725
726 if (!fw_has_capa(&mvm->fw->ucode_capa,
727 IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA))
728 return;
729
730 if (low_latency) {
731 /* currently we don't care about the direction */
732 cmd.low_latency_rx = 1;
733 cmd.low_latency_tx = 1;
734 }
735
736 if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD,
737 MAC_CONF_GROUP, 0),
738 0, sizeof(cmd), &cmd))
739 IWL_ERR(mvm, "Failed to send low latency command\n");
740 }
741
742 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
743 bool low_latency,
744 enum iwl_mvm_low_latency_cause cause)
745 {
746 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
747 int res;
748 bool prev;
749
750 lockdep_assert_held(&mvm->mutex);
751
752 prev = iwl_mvm_vif_low_latency(mvmvif);
753 iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause);
754
755 low_latency = iwl_mvm_vif_low_latency(mvmvif);
756
757 if (low_latency == prev)
758 return 0;
759
760 iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id);
761
762 res = iwl_mvm_update_quotas(mvm, false, NULL);
763 if (res)
764 return res;
765
766 iwl_mvm_bt_coex_vif_change(mvm);
767
768 return iwl_mvm_power_update_mac(mvm);
769 }
770
771 struct iwl_mvm_low_latency_iter {
772 bool result;
773 bool result_per_band[NUM_NL80211_BANDS];
774 };
775
776 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
777 {
778 struct iwl_mvm_low_latency_iter *result = _data;
779 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
780 enum nl80211_band band;
781
782 if (iwl_mvm_vif_low_latency(mvmvif)) {
783 result->result = true;
784
785 if (!mvmvif->phy_ctxt)
786 return;
787
788 band = mvmvif->phy_ctxt->channel->band;
789 result->result_per_band[band] = true;
790 }
791 }
792
793 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
794 {
795 struct iwl_mvm_low_latency_iter data = {};
796
797 ieee80211_iterate_active_interfaces_atomic(
798 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
799 iwl_mvm_ll_iter, &data);
800
801 return data.result;
802 }
803
804 bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band)
805 {
806 struct iwl_mvm_low_latency_iter data = {};
807
808 ieee80211_iterate_active_interfaces_atomic(
809 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
810 iwl_mvm_ll_iter, &data);
811
812 return data.result_per_band[band];
813 }
814
815 struct iwl_bss_iter_data {
816 struct ieee80211_vif *vif;
817 bool error;
818 };
819
820 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
821 struct ieee80211_vif *vif)
822 {
823 struct iwl_bss_iter_data *data = _data;
824
825 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
826 return;
827
828 if (data->vif) {
829 data->error = true;
830 return;
831 }
832
833 data->vif = vif;
834 }
835
836 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
837 {
838 struct iwl_bss_iter_data bss_iter_data = {};
839
840 ieee80211_iterate_active_interfaces_atomic(
841 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
842 iwl_mvm_bss_iface_iterator, &bss_iter_data);
843
844 if (bss_iter_data.error) {
845 IWL_ERR(mvm, "More than one managed interface active!\n");
846 return ERR_PTR(-EINVAL);
847 }
848
849 return bss_iter_data.vif;
850 }
851
852 struct iwl_bss_find_iter_data {
853 struct ieee80211_vif *vif;
854 u32 macid;
855 };
856
857 static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac,
858 struct ieee80211_vif *vif)
859 {
860 struct iwl_bss_find_iter_data *data = _data;
861 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
862
863 if (mvmvif->id == data->macid)
864 data->vif = vif;
865 }
866
867 struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid)
868 {
869 struct iwl_bss_find_iter_data data = {
870 .macid = macid,
871 };
872
873 lockdep_assert_held(&mvm->mutex);
874
875 ieee80211_iterate_active_interfaces_atomic(
876 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
877 iwl_mvm_bss_find_iface_iterator, &data);
878
879 return data.vif;
880 }
881
882 struct iwl_sta_iter_data {
883 bool assoc;
884 };
885
886 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
887 struct ieee80211_vif *vif)
888 {
889 struct iwl_sta_iter_data *data = _data;
890
891 if (vif->type != NL80211_IFTYPE_STATION)
892 return;
893
894 if (vif->bss_conf.assoc)
895 data->assoc = true;
896 }
897
898 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
899 {
900 struct iwl_sta_iter_data data = {
901 .assoc = false,
902 };
903
904 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
905 IEEE80211_IFACE_ITER_NORMAL,
906 iwl_mvm_sta_iface_iterator,
907 &data);
908 return data.assoc;
909 }
910
911 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
912 struct ieee80211_vif *vif,
913 bool tdls, bool cmd_q)
914 {
915 struct iwl_fw_dbg_trigger_tlv *trigger;
916 struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
917 unsigned int default_timeout = cmd_q ?
918 IWL_DEF_WD_TIMEOUT :
919 mvm->trans->trans_cfg->base_params->wd_timeout;
920
921 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) {
922 /*
923 * We can't know when the station is asleep or awake, so we
924 * must disable the queue hang detection.
925 */
926 if (fw_has_capa(&mvm->fw->ucode_capa,
927 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
928 vif && vif->type == NL80211_IFTYPE_AP)
929 return IWL_WATCHDOG_DISABLED;
930 return default_timeout;
931 }
932
933 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
934 txq_timer = (void *)trigger->data;
935
936 if (tdls)
937 return le32_to_cpu(txq_timer->tdls);
938
939 if (cmd_q)
940 return le32_to_cpu(txq_timer->command_queue);
941
942 if (WARN_ON(!vif))
943 return default_timeout;
944
945 switch (ieee80211_vif_type_p2p(vif)) {
946 case NL80211_IFTYPE_ADHOC:
947 return le32_to_cpu(txq_timer->ibss);
948 case NL80211_IFTYPE_STATION:
949 return le32_to_cpu(txq_timer->bss);
950 case NL80211_IFTYPE_AP:
951 return le32_to_cpu(txq_timer->softap);
952 case NL80211_IFTYPE_P2P_CLIENT:
953 return le32_to_cpu(txq_timer->p2p_client);
954 case NL80211_IFTYPE_P2P_GO:
955 return le32_to_cpu(txq_timer->p2p_go);
956 case NL80211_IFTYPE_P2P_DEVICE:
957 return le32_to_cpu(txq_timer->p2p_device);
958 case NL80211_IFTYPE_MONITOR:
959 return default_timeout;
960 default:
961 WARN_ON(1);
962 return mvm->trans->trans_cfg->base_params->wd_timeout;
963 }
964 }
965
966 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
967 const char *errmsg)
968 {
969 struct iwl_fw_dbg_trigger_tlv *trig;
970 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
971
972 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
973 FW_DBG_TRIGGER_MLME);
974 if (!trig)
975 goto out;
976
977 trig_mlme = (void *)trig->data;
978
979 if (trig_mlme->stop_connection_loss &&
980 --trig_mlme->stop_connection_loss)
981 goto out;
982
983 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
984
985 out:
986 ieee80211_connection_loss(vif);
987 }
988
989 void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
990 struct ieee80211_vif *vif,
991 const struct ieee80211_sta *sta,
992 u16 tid)
993 {
994 struct iwl_fw_dbg_trigger_tlv *trig;
995 struct iwl_fw_dbg_trigger_ba *ba_trig;
996
997 trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
998 FW_DBG_TRIGGER_BA);
999 if (!trig)
1000 return;
1001
1002 ba_trig = (void *)trig->data;
1003
1004 if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid)))
1005 return;
1006
1007 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
1008 "Frame from %pM timed out, tid %d",
1009 sta->addr, tid);
1010 }
1011
1012 u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed)
1013 {
1014 if (!elapsed)
1015 return 0;
1016
1017 return (100 * airtime / elapsed) / USEC_PER_MSEC;
1018 }
1019
1020 static enum iwl_mvm_traffic_load
1021 iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed)
1022 {
1023 u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed);
1024
1025 if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH)
1026 return IWL_MVM_TRAFFIC_HIGH;
1027 if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH)
1028 return IWL_MVM_TRAFFIC_MEDIUM;
1029
1030 return IWL_MVM_TRAFFIC_LOW;
1031 }
1032
1033 static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
1034 {
1035 struct iwl_mvm *mvm = _data;
1036 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1037 bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC;
1038
1039 if (mvmvif->id >= NUM_MAC_INDEX_DRIVER)
1040 return;
1041
1042 low_latency = mvm->tcm.result.low_latency[mvmvif->id];
1043
1044 if (!mvm->tcm.result.change[mvmvif->id] &&
1045 prev == low_latency) {
1046 iwl_mvm_update_quotas(mvm, false, NULL);
1047 return;
1048 }
1049
1050 if (prev != low_latency) {
1051 /* this sends traffic load and updates quota as well */
1052 iwl_mvm_update_low_latency(mvm, vif, low_latency,
1053 LOW_LATENCY_TRAFFIC);
1054 } else {
1055 iwl_mvm_update_quotas(mvm, false, NULL);
1056 }
1057 }
1058
1059 static void iwl_mvm_tcm_results(struct iwl_mvm *mvm)
1060 {
1061 mutex_lock(&mvm->mutex);
1062
1063 ieee80211_iterate_active_interfaces(
1064 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1065 iwl_mvm_tcm_iter, mvm);
1066
1067 if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
1068 iwl_mvm_config_scan(mvm);
1069
1070 mutex_unlock(&mvm->mutex);
1071 }
1072
1073 static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk)
1074 {
1075 struct iwl_mvm *mvm;
1076 struct iwl_mvm_vif *mvmvif;
1077 struct ieee80211_vif *vif;
1078
1079 mvmvif = container_of(wk, struct iwl_mvm_vif,
1080 uapsd_nonagg_detected_wk.work);
1081 vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
1082 mvm = mvmvif->mvm;
1083
1084 if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions)
1085 return;
1086
1087 /* remember that this AP is broken */
1088 memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr,
1089 vif->bss_conf.bssid, ETH_ALEN);
1090 mvm->uapsd_noagg_bssid_write_idx++;
1091 if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN)
1092 mvm->uapsd_noagg_bssid_write_idx = 0;
1093
1094 iwl_mvm_connection_loss(mvm, vif,
1095 "AP isn't using AMPDU with uAPSD enabled");
1096 }
1097
1098 static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm,
1099 struct ieee80211_vif *vif)
1100 {
1101 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1102
1103 if (vif->type != NL80211_IFTYPE_STATION)
1104 return;
1105
1106 if (!vif->bss_conf.assoc)
1107 return;
1108
1109 if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd &&
1110 !mvmvif->queue_params[IEEE80211_AC_VI].uapsd &&
1111 !mvmvif->queue_params[IEEE80211_AC_BE].uapsd &&
1112 !mvmvif->queue_params[IEEE80211_AC_BK].uapsd)
1113 return;
1114
1115 if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected)
1116 return;
1117
1118 mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true;
1119 IWL_INFO(mvm,
1120 "detected AP should do aggregation but isn't, likely due to U-APSD\n");
1121 schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ);
1122 }
1123
1124 static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm,
1125 unsigned int elapsed,
1126 int mac)
1127 {
1128 u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes;
1129 u64 tpt;
1130 unsigned long rate;
1131 struct ieee80211_vif *vif;
1132
1133 rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate);
1134
1135 if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions ||
1136 mvm->tcm.data[mac].uapsd_nonagg_detect.detected)
1137 return;
1138
1139 if (iwl_mvm_has_new_rx_api(mvm)) {
1140 tpt = 8 * bytes; /* kbps */
1141 do_div(tpt, elapsed);
1142 rate *= 1000; /* kbps */
1143 if (tpt < 22 * rate / 100)
1144 return;
1145 } else {
1146 /*
1147 * the rate here is actually the threshold, in 100Kbps units,
1148 * so do the needed conversion from bytes to 100Kbps:
1149 * 100kb = bits / (100 * 1000),
1150 * 100kbps = 100kb / (msecs / 1000) ==
1151 * (bits / (100 * 1000)) / (msecs / 1000) ==
1152 * bits / (100 * msecs)
1153 */
1154 tpt = (8 * bytes);
1155 do_div(tpt, elapsed * 100);
1156 if (tpt < rate)
1157 return;
1158 }
1159
1160 rcu_read_lock();
1161 vif = rcu_dereference(mvm->vif_id_to_mac[mac]);
1162 if (vif)
1163 iwl_mvm_uapsd_agg_disconnect(mvm, vif);
1164 rcu_read_unlock();
1165 }
1166
1167 static void iwl_mvm_tcm_iterator(void *_data, u8 *mac,
1168 struct ieee80211_vif *vif)
1169 {
1170 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1171 u32 *band = _data;
1172
1173 if (!mvmvif->phy_ctxt)
1174 return;
1175
1176 band[mvmvif->id] = mvmvif->phy_ctxt->channel->band;
1177 }
1178
1179 static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm,
1180 unsigned long ts,
1181 bool handle_uapsd)
1182 {
1183 unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts);
1184 unsigned int uapsd_elapsed =
1185 jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts);
1186 u32 total_airtime = 0;
1187 u32 band_airtime[NUM_NL80211_BANDS] = {0};
1188 u32 band[NUM_MAC_INDEX_DRIVER] = {0};
1189 int ac, mac, i;
1190 bool low_latency = false;
1191 enum iwl_mvm_traffic_load load, band_load;
1192 bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD);
1193
1194 if (handle_ll)
1195 mvm->tcm.ll_ts = ts;
1196 if (handle_uapsd)
1197 mvm->tcm.uapsd_nonagg_ts = ts;
1198
1199 mvm->tcm.result.elapsed = elapsed;
1200
1201 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1202 IEEE80211_IFACE_ITER_NORMAL,
1203 iwl_mvm_tcm_iterator,
1204 &band);
1205
1206 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1207 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1208 u32 vo_vi_pkts = 0;
1209 u32 airtime = mdata->rx.airtime + mdata->tx.airtime;
1210
1211 total_airtime += airtime;
1212 band_airtime[band[mac]] += airtime;
1213
1214 load = iwl_mvm_tcm_load(mvm, airtime, elapsed);
1215 mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac];
1216 mvm->tcm.result.load[mac] = load;
1217 mvm->tcm.result.airtime[mac] = airtime;
1218
1219 for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++)
1220 vo_vi_pkts += mdata->rx.pkts[ac] +
1221 mdata->tx.pkts[ac];
1222
1223 /* enable immediately with enough packets but defer disabling */
1224 if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH)
1225 mvm->tcm.result.low_latency[mac] = true;
1226 else if (handle_ll)
1227 mvm->tcm.result.low_latency[mac] = false;
1228
1229 if (handle_ll) {
1230 /* clear old data */
1231 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1232 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1233 }
1234 low_latency |= mvm->tcm.result.low_latency[mac];
1235
1236 if (!mvm->tcm.result.low_latency[mac] && handle_uapsd)
1237 iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed,
1238 mac);
1239 /* clear old data */
1240 if (handle_uapsd)
1241 mdata->uapsd_nonagg_detect.rx_bytes = 0;
1242 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1243 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1244 }
1245
1246 load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed);
1247 mvm->tcm.result.global_load = load;
1248
1249 for (i = 0; i < NUM_NL80211_BANDS; i++) {
1250 band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed);
1251 mvm->tcm.result.band_load[i] = band_load;
1252 }
1253
1254 /*
1255 * If the current load isn't low we need to force re-evaluation
1256 * in the TCM period, so that we can return to low load if there
1257 * was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get
1258 * triggered by traffic).
1259 */
1260 if (load != IWL_MVM_TRAFFIC_LOW)
1261 return MVM_TCM_PERIOD;
1262 /*
1263 * If low-latency is active we need to force re-evaluation after
1264 * (the longer) MVM_LL_PERIOD, so that we can disable low-latency
1265 * when there's no traffic at all.
1266 */
1267 if (low_latency)
1268 return MVM_LL_PERIOD;
1269 /*
1270 * Otherwise, we don't need to run the work struct because we're
1271 * in the default "idle" state - traffic indication is low (which
1272 * also covers the "no traffic" case) and low-latency is disabled
1273 * so there's no state that may need to be disabled when there's
1274 * no traffic at all.
1275 *
1276 * Note that this has no impact on the regular scheduling of the
1277 * updates triggered by traffic - those happen whenever one of the
1278 * two timeouts expire (if there's traffic at all.)
1279 */
1280 return 0;
1281 }
1282
1283 void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm)
1284 {
1285 unsigned long ts = jiffies;
1286 bool handle_uapsd =
1287 time_after(ts, mvm->tcm.uapsd_nonagg_ts +
1288 msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD));
1289
1290 spin_lock(&mvm->tcm.lock);
1291 if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1292 spin_unlock(&mvm->tcm.lock);
1293 return;
1294 }
1295 spin_unlock(&mvm->tcm.lock);
1296
1297 if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) {
1298 mutex_lock(&mvm->mutex);
1299 if (iwl_mvm_request_statistics(mvm, true))
1300 handle_uapsd = false;
1301 mutex_unlock(&mvm->mutex);
1302 }
1303
1304 spin_lock(&mvm->tcm.lock);
1305 /* re-check if somebody else won the recheck race */
1306 if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
1307 /* calculate statistics */
1308 unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts,
1309 handle_uapsd);
1310
1311 /* the memset needs to be visible before the timestamp */
1312 smp_mb();
1313 mvm->tcm.ts = ts;
1314 if (work_delay)
1315 schedule_delayed_work(&mvm->tcm.work, work_delay);
1316 }
1317 spin_unlock(&mvm->tcm.lock);
1318
1319 iwl_mvm_tcm_results(mvm);
1320 }
1321
1322 void iwl_mvm_tcm_work(struct work_struct *work)
1323 {
1324 struct delayed_work *delayed_work = to_delayed_work(work);
1325 struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
1326 tcm.work);
1327
1328 iwl_mvm_recalc_tcm(mvm);
1329 }
1330
1331 void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel)
1332 {
1333 spin_lock_bh(&mvm->tcm.lock);
1334 mvm->tcm.paused = true;
1335 spin_unlock_bh(&mvm->tcm.lock);
1336 if (with_cancel)
1337 cancel_delayed_work_sync(&mvm->tcm.work);
1338 }
1339
1340 void iwl_mvm_resume_tcm(struct iwl_mvm *mvm)
1341 {
1342 int mac;
1343 bool low_latency = false;
1344
1345 spin_lock_bh(&mvm->tcm.lock);
1346 mvm->tcm.ts = jiffies;
1347 mvm->tcm.ll_ts = jiffies;
1348 for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
1349 struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
1350
1351 memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
1352 memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
1353 memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
1354 memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
1355
1356 if (mvm->tcm.result.low_latency[mac])
1357 low_latency = true;
1358 }
1359 /* The TCM data needs to be reset before "paused" flag changes */
1360 smp_mb();
1361 mvm->tcm.paused = false;
1362
1363 /*
1364 * if the current load is not low or low latency is active, force
1365 * re-evaluation to cover the case of no traffic.
1366 */
1367 if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW)
1368 schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD);
1369 else if (low_latency)
1370 schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD);
1371
1372 spin_unlock_bh(&mvm->tcm.lock);
1373 }
1374
1375 void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1376 {
1377 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1378
1379 INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk,
1380 iwl_mvm_tcm_uapsd_nonagg_detected_wk);
1381 }
1382
1383 void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
1384 {
1385 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1386
1387 cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk);
1388 }
1389
1390 u32 iwl_mvm_get_systime(struct iwl_mvm *mvm)
1391 {
1392 u32 reg_addr = DEVICE_SYSTEM_TIME_REG;
1393
1394 if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000 &&
1395 mvm->trans->cfg->gp2_reg_addr)
1396 reg_addr = mvm->trans->cfg->gp2_reg_addr;
1397
1398 return iwl_read_prph(mvm->trans, reg_addr);
1399 }
1400
1401 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
1402 {
1403 bool ps_disabled;
1404
1405 lockdep_assert_held(&mvm->mutex);
1406
1407 /* Disable power save when reading GP2 */
1408 ps_disabled = mvm->ps_disabled;
1409 if (!ps_disabled) {
1410 mvm->ps_disabled = true;
1411 iwl_mvm_power_update_device(mvm);
1412 }
1413
1414 *gp2 = iwl_mvm_get_systime(mvm);
1415 *boottime = ktime_get_boottime_ns();
1416
1417 if (!ps_disabled) {
1418 mvm->ps_disabled = ps_disabled;
1419 iwl_mvm_power_update_device(mvm);
1420 }
1421 }
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