1 /******************************************************************************
2 *
3 * This file is provided under a dual BSD/GPLv2 license. When using or
4 * redistributing this file, you may do so under either license.
5 *
6 * GPL LICENSE SUMMARY
7 *
8 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
10 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of version 2 of the GNU General Public License as
14 * published by the Free Software Foundation.
15 *
16 * This program is distributed in the hope that it will be useful, but
17 * WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 * General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
24 * USA
25 *
26 * The full GNU General Public License is included in this distribution
27 * in the file called COPYING.
28 *
29 * Contact Information:
30 * Intel Linux Wireless <linuxwifi@intel.com>
31 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
32 *
33 * BSD LICENSE
34 *
35 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
36 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
37 * Copyright (C) 2015 - 2017 Intel Deutschland GmbH
38 * All rights reserved.
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 *
44 * * Redistributions of source code must retain the above copyright
45 * notice, this list of conditions and the following disclaimer.
46 * * Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in
48 * the documentation and/or other materials provided with the
49 * distribution.
50 * * Neither the name Intel Corporation nor the names of its
51 * contributors may be used to endorse or promote products derived
52 * from this software without specific prior written permission.
53 *
54 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
55 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
56 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
57 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
58 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
59 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
60 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
61 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
62 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
63 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
64 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
65 *
66 *****************************************************************************/
67 #include <net/mac80211.h>
68
69 #include "iwl-debug.h"
70 #include "iwl-io.h"
71 #include "iwl-prph.h"
72 #include "iwl-csr.h"
73 #include "mvm.h"
74 #include "fw/api/rs.h"
75
76 /*
77 * Will return 0 even if the cmd failed when RFKILL is asserted unless
78 * CMD_WANT_SKB is set in cmd->flags.
79 */
iwl_mvm_send_cmd(struct iwl_mvm * mvm,struct iwl_host_cmd * cmd)80 int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
81 {
82 int ret;
83
84 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
85 if (WARN_ON(mvm->d3_test_active))
86 return -EIO;
87 #endif
88
89 /*
90 * Synchronous commands from this op-mode must hold
91 * the mutex, this ensures we don't try to send two
92 * (or more) synchronous commands at a time.
93 */
94 if (!(cmd->flags & CMD_ASYNC)) {
95 lockdep_assert_held(&mvm->mutex);
96 if (!(cmd->flags & CMD_SEND_IN_IDLE))
97 iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD);
98 }
99
100 ret = iwl_trans_send_cmd(mvm->trans, cmd);
101
102 if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE)))
103 iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_CMD);
104
105 /*
106 * If the caller wants the SKB, then don't hide any problems, the
107 * caller might access the response buffer which will be NULL if
108 * the command failed.
109 */
110 if (cmd->flags & CMD_WANT_SKB)
111 return ret;
112
113 /* Silently ignore failures if RFKILL is asserted */
114 if (!ret || ret == -ERFKILL)
115 return 0;
116 return ret;
117 }
118
iwl_mvm_send_cmd_pdu(struct iwl_mvm * mvm,u32 id,u32 flags,u16 len,const void * data)119 int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id,
120 u32 flags, u16 len, const void *data)
121 {
122 struct iwl_host_cmd cmd = {
123 .id = id,
124 .len = { len, },
125 .data = { data, },
126 .flags = flags,
127 };
128
129 return iwl_mvm_send_cmd(mvm, &cmd);
130 }
131
132 /*
133 * We assume that the caller set the status to the success value
134 */
iwl_mvm_send_cmd_status(struct iwl_mvm * mvm,struct iwl_host_cmd * cmd,u32 * status)135 int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
136 u32 *status)
137 {
138 struct iwl_rx_packet *pkt;
139 struct iwl_cmd_response *resp;
140 int ret, resp_len;
141
142 lockdep_assert_held(&mvm->mutex);
143
144 #if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
145 if (WARN_ON(mvm->d3_test_active))
146 return -EIO;
147 #endif
148
149 /*
150 * Only synchronous commands can wait for status,
151 * we use WANT_SKB so the caller can't.
152 */
153 if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
154 "cmd flags %x", cmd->flags))
155 return -EINVAL;
156
157 cmd->flags |= CMD_WANT_SKB;
158
159 ret = iwl_trans_send_cmd(mvm->trans, cmd);
160 if (ret == -ERFKILL) {
161 /*
162 * The command failed because of RFKILL, don't update
163 * the status, leave it as success and return 0.
164 */
165 return 0;
166 } else if (ret) {
167 return ret;
168 }
169
170 pkt = cmd->resp_pkt;
171
172 resp_len = iwl_rx_packet_payload_len(pkt);
173 if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
174 ret = -EIO;
175 goto out_free_resp;
176 }
177
178 resp = (void *)pkt->data;
179 *status = le32_to_cpu(resp->status);
180 out_free_resp:
181 iwl_free_resp(cmd);
182 return ret;
183 }
184
185 /*
186 * We assume that the caller set the status to the sucess value
187 */
iwl_mvm_send_cmd_pdu_status(struct iwl_mvm * mvm,u32 id,u16 len,const void * data,u32 * status)188 int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len,
189 const void *data, u32 *status)
190 {
191 struct iwl_host_cmd cmd = {
192 .id = id,
193 .len = { len, },
194 .data = { data, },
195 };
196
197 return iwl_mvm_send_cmd_status(mvm, &cmd, status);
198 }
199
200 #define IWL_DECLARE_RATE_INFO(r) \
201 [IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP
202
203 /*
204 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
205 */
206 static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
207 IWL_DECLARE_RATE_INFO(1),
208 IWL_DECLARE_RATE_INFO(2),
209 IWL_DECLARE_RATE_INFO(5),
210 IWL_DECLARE_RATE_INFO(11),
211 IWL_DECLARE_RATE_INFO(6),
212 IWL_DECLARE_RATE_INFO(9),
213 IWL_DECLARE_RATE_INFO(12),
214 IWL_DECLARE_RATE_INFO(18),
215 IWL_DECLARE_RATE_INFO(24),
216 IWL_DECLARE_RATE_INFO(36),
217 IWL_DECLARE_RATE_INFO(48),
218 IWL_DECLARE_RATE_INFO(54),
219 };
220
iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,enum nl80211_band band)221 int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
222 enum nl80211_band band)
223 {
224 int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
225 int idx;
226 int band_offset = 0;
227
228 /* Legacy rate format, search for match in table */
229 if (band == NL80211_BAND_5GHZ)
230 band_offset = IWL_FIRST_OFDM_RATE;
231 for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
232 if (fw_rate_idx_to_plcp[idx] == rate)
233 return idx - band_offset;
234
235 return -1;
236 }
237
iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)238 u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
239 {
240 /* Get PLCP rate for tx_cmd->rate_n_flags */
241 return fw_rate_idx_to_plcp[rate_idx];
242 }
243
iwl_mvm_rx_fw_error(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)244 void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
245 {
246 struct iwl_rx_packet *pkt = rxb_addr(rxb);
247 struct iwl_error_resp *err_resp = (void *)pkt->data;
248
249 IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
250 le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
251 IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
252 le16_to_cpu(err_resp->bad_cmd_seq_num),
253 le32_to_cpu(err_resp->error_service));
254 IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
255 le64_to_cpu(err_resp->timestamp));
256 }
257
258 /*
259 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
260 * The parameter should also be a combination of ANT_[ABC].
261 */
first_antenna(u8 mask)262 u8 first_antenna(u8 mask)
263 {
264 BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
265 if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
266 return BIT(0);
267 return BIT(ffs(mask) - 1);
268 }
269
270 /*
271 * Toggles between TX antennas to send the probe request on.
272 * Receives the bitmask of valid TX antennas and the *index* used
273 * for the last TX, and returns the next valid *index* to use.
274 * In order to set it in the tx_cmd, must do BIT(idx).
275 */
iwl_mvm_next_antenna(struct iwl_mvm * mvm,u8 valid,u8 last_idx)276 u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
277 {
278 u8 ind = last_idx;
279 int i;
280
281 for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
282 ind = (ind + 1) % RATE_MCS_ANT_NUM;
283 if (valid & BIT(ind))
284 return ind;
285 }
286
287 WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
288 return last_idx;
289 }
290
291 static const struct {
292 const char *name;
293 u8 num;
294 } advanced_lookup[] = {
295 { "NMI_INTERRUPT_WDG", 0x34 },
296 { "SYSASSERT", 0x35 },
297 { "UCODE_VERSION_MISMATCH", 0x37 },
298 { "BAD_COMMAND", 0x38 },
299 { "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
300 { "FATAL_ERROR", 0x3D },
301 { "NMI_TRM_HW_ERR", 0x46 },
302 { "NMI_INTERRUPT_TRM", 0x4C },
303 { "NMI_INTERRUPT_BREAK_POINT", 0x54 },
304 { "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
305 { "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
306 { "NMI_INTERRUPT_HOST", 0x66 },
307 { "NMI_INTERRUPT_ACTION_PT", 0x7C },
308 { "NMI_INTERRUPT_UNKNOWN", 0x84 },
309 { "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
310 { "ADVANCED_SYSASSERT", 0 },
311 };
312
desc_lookup(u32 num)313 static const char *desc_lookup(u32 num)
314 {
315 int i;
316
317 for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
318 if (advanced_lookup[i].num == num)
319 return advanced_lookup[i].name;
320
321 /* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
322 return advanced_lookup[i].name;
323 }
324
325 /*
326 * Note: This structure is read from the device with IO accesses,
327 * and the reading already does the endian conversion. As it is
328 * read with u32-sized accesses, any members with a different size
329 * need to be ordered correctly though!
330 */
331 struct iwl_error_event_table_v1 {
332 u32 valid; /* (nonzero) valid, (0) log is empty */
333 u32 error_id; /* type of error */
334 u32 pc; /* program counter */
335 u32 blink1; /* branch link */
336 u32 blink2; /* branch link */
337 u32 ilink1; /* interrupt link */
338 u32 ilink2; /* interrupt link */
339 u32 data1; /* error-specific data */
340 u32 data2; /* error-specific data */
341 u32 data3; /* error-specific data */
342 u32 bcon_time; /* beacon timer */
343 u32 tsf_low; /* network timestamp function timer */
344 u32 tsf_hi; /* network timestamp function timer */
345 u32 gp1; /* GP1 timer register */
346 u32 gp2; /* GP2 timer register */
347 u32 gp3; /* GP3 timer register */
348 u32 ucode_ver; /* uCode version */
349 u32 hw_ver; /* HW Silicon version */
350 u32 brd_ver; /* HW board version */
351 u32 log_pc; /* log program counter */
352 u32 frame_ptr; /* frame pointer */
353 u32 stack_ptr; /* stack pointer */
354 u32 hcmd; /* last host command header */
355 u32 isr0; /* isr status register LMPM_NIC_ISR0:
356 * rxtx_flag */
357 u32 isr1; /* isr status register LMPM_NIC_ISR1:
358 * host_flag */
359 u32 isr2; /* isr status register LMPM_NIC_ISR2:
360 * enc_flag */
361 u32 isr3; /* isr status register LMPM_NIC_ISR3:
362 * time_flag */
363 u32 isr4; /* isr status register LMPM_NIC_ISR4:
364 * wico interrupt */
365 u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */
366 u32 wait_event; /* wait event() caller address */
367 u32 l2p_control; /* L2pControlField */
368 u32 l2p_duration; /* L2pDurationField */
369 u32 l2p_mhvalid; /* L2pMhValidBits */
370 u32 l2p_addr_match; /* L2pAddrMatchStat */
371 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
372 * (LMPM_PMG_SEL) */
373 u32 u_timestamp; /* indicate when the date and time of the
374 * compilation */
375 u32 flow_handler; /* FH read/write pointers, RX credit */
376 } __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;
377
378 struct iwl_error_event_table {
379 u32 valid; /* (nonzero) valid, (0) log is empty */
380 u32 error_id; /* type of error */
381 u32 trm_hw_status0; /* TRM HW status */
382 u32 trm_hw_status1; /* TRM HW status */
383 u32 blink2; /* branch link */
384 u32 ilink1; /* interrupt link */
385 u32 ilink2; /* interrupt link */
386 u32 data1; /* error-specific data */
387 u32 data2; /* error-specific data */
388 u32 data3; /* error-specific data */
389 u32 bcon_time; /* beacon timer */
390 u32 tsf_low; /* network timestamp function timer */
391 u32 tsf_hi; /* network timestamp function timer */
392 u32 gp1; /* GP1 timer register */
393 u32 gp2; /* GP2 timer register */
394 u32 fw_rev_type; /* firmware revision type */
395 u32 major; /* uCode version major */
396 u32 minor; /* uCode version minor */
397 u32 hw_ver; /* HW Silicon version */
398 u32 brd_ver; /* HW board version */
399 u32 log_pc; /* log program counter */
400 u32 frame_ptr; /* frame pointer */
401 u32 stack_ptr; /* stack pointer */
402 u32 hcmd; /* last host command header */
403 u32 isr0; /* isr status register LMPM_NIC_ISR0:
404 * rxtx_flag */
405 u32 isr1; /* isr status register LMPM_NIC_ISR1:
406 * host_flag */
407 u32 isr2; /* isr status register LMPM_NIC_ISR2:
408 * enc_flag */
409 u32 isr3; /* isr status register LMPM_NIC_ISR3:
410 * time_flag */
411 u32 isr4; /* isr status register LMPM_NIC_ISR4:
412 * wico interrupt */
413 u32 last_cmd_id; /* last HCMD id handled by the firmware */
414 u32 wait_event; /* wait event() caller address */
415 u32 l2p_control; /* L2pControlField */
416 u32 l2p_duration; /* L2pDurationField */
417 u32 l2p_mhvalid; /* L2pMhValidBits */
418 u32 l2p_addr_match; /* L2pAddrMatchStat */
419 u32 lmpm_pmg_sel; /* indicate which clocks are turned on
420 * (LMPM_PMG_SEL) */
421 u32 u_timestamp; /* indicate when the date and time of the
422 * compilation */
423 u32 flow_handler; /* FH read/write pointers, RX credit */
424 } __packed /* LOG_ERROR_TABLE_API_S_VER_3 */;
425
426 /*
427 * UMAC error struct - relevant starting from family 8000 chip.
428 * Note: This structure is read from the device with IO accesses,
429 * and the reading already does the endian conversion. As it is
430 * read with u32-sized accesses, any members with a different size
431 * need to be ordered correctly though!
432 */
433 struct iwl_umac_error_event_table {
434 u32 valid; /* (nonzero) valid, (0) log is empty */
435 u32 error_id; /* type of error */
436 u32 blink1; /* branch link */
437 u32 blink2; /* branch link */
438 u32 ilink1; /* interrupt link */
439 u32 ilink2; /* interrupt link */
440 u32 data1; /* error-specific data */
441 u32 data2; /* error-specific data */
442 u32 data3; /* error-specific data */
443 u32 umac_major;
444 u32 umac_minor;
445 u32 frame_pointer; /* core register 27*/
446 u32 stack_pointer; /* core register 28 */
447 u32 cmd_header; /* latest host cmd sent to UMAC */
448 u32 nic_isr_pref; /* ISR status register */
449 } __packed;
450
451 #define ERROR_START_OFFSET (1 * sizeof(u32))
452 #define ERROR_ELEM_SIZE (7 * sizeof(u32))
453
iwl_mvm_dump_umac_error_log(struct iwl_mvm * mvm)454 static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
455 {
456 struct iwl_trans *trans = mvm->trans;
457 struct iwl_umac_error_event_table table;
458 u32 base;
459
460 base = mvm->umac_error_event_table;
461
462 if (base < 0x800000) {
463 IWL_ERR(mvm,
464 "Not valid error log pointer 0x%08X for %s uCode\n",
465 base,
466 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT)
467 ? "Init" : "RT");
468 return;
469 }
470
471 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
472
473 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
474 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
475 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
476 mvm->status, table.valid);
477 }
478
479 IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
480 desc_lookup(table.error_id));
481 IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
482 IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
483 IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
484 IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
485 IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
486 IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
487 IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
488 IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
489 IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
490 IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
491 IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
492 IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
493 IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
494 }
495
iwl_mvm_dump_lmac_error_log(struct iwl_mvm * mvm,u32 base)496 static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u32 base)
497 {
498 struct iwl_trans *trans = mvm->trans;
499 struct iwl_error_event_table table;
500 u32 val;
501
502 if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) {
503 if (!base)
504 base = mvm->fw->init_errlog_ptr;
505 } else {
506 if (!base)
507 base = mvm->fw->inst_errlog_ptr;
508 }
509
510 if (base < 0x400000) {
511 IWL_ERR(mvm,
512 "Not valid error log pointer 0x%08X for %s uCode\n",
513 base,
514 (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT)
515 ? "Init" : "RT");
516 return;
517 }
518
519 /* check if there is a HW error */
520 val = iwl_trans_read_mem32(trans, base);
521 if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) {
522 int err;
523
524 IWL_ERR(trans, "HW error, resetting before reading\n");
525
526 /* reset the device */
527 iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET);
528 usleep_range(5000, 6000);
529
530 /* set INIT_DONE flag */
531 iwl_set_bit(trans, CSR_GP_CNTRL,
532 CSR_GP_CNTRL_REG_FLAG_INIT_DONE);
533
534 /* and wait for clock stabilization */
535 if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000)
536 udelay(2);
537
538 err = iwl_poll_bit(trans, CSR_GP_CNTRL,
539 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
540 CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY,
541 25000);
542 if (err < 0) {
543 IWL_DEBUG_INFO(trans,
544 "Failed to reset the card for the dump\n");
545 return;
546 }
547 }
548
549 iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
550
551 if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
552 IWL_ERR(trans, "Start IWL Error Log Dump:\n");
553 IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
554 mvm->status, table.valid);
555 }
556
557 /* Do not change this output - scripts rely on it */
558
559 IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);
560
561 trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
562 table.data1, table.data2, table.data3,
563 table.blink2, table.ilink1,
564 table.ilink2, table.bcon_time, table.gp1,
565 table.gp2, table.fw_rev_type, table.major,
566 table.minor, table.hw_ver, table.brd_ver);
567 IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
568 desc_lookup(table.error_id));
569 IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
570 IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1);
571 IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
572 IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
573 IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
574 IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
575 IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
576 IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
577 IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
578 IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
579 IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
580 IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
581 IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
582 IWL_ERR(mvm, "0x%08X | uCode revision type\n", table.fw_rev_type);
583 IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
584 IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
585 IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
586 IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
587 IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
588 IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
589 IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
590 IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
591 IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
592 IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
593 IWL_ERR(mvm, "0x%08X | last cmd Id\n", table.last_cmd_id);
594 IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
595 IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
596 IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
597 IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
598 IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
599 IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
600 IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
601 IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
602 }
603
iwl_mvm_dump_nic_error_log(struct iwl_mvm * mvm)604 void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
605 {
606 if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) {
607 IWL_ERR(mvm,
608 "DEVICE_ENABLED bit is not set. Aborting dump.\n");
609 return;
610 }
611
612 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[0]);
613
614 if (mvm->error_event_table[1])
615 iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[1]);
616
617 if (mvm->support_umac_log)
618 iwl_mvm_dump_umac_error_log(mvm);
619 }
620
iwl_mvm_find_free_queue(struct iwl_mvm * mvm,u8 sta_id,u8 minq,u8 maxq)621 int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq)
622 {
623 int i;
624
625 lockdep_assert_held(&mvm->queue_info_lock);
626
627 /* This should not be hit with new TX path */
628 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
629 return -ENOSPC;
630
631 /* Start by looking for a free queue */
632 for (i = minq; i <= maxq; i++)
633 if (mvm->queue_info[i].hw_queue_refcount == 0 &&
634 mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)
635 return i;
636
637 /*
638 * If no free queue found - settle for an inactive one to reconfigure
639 * Make sure that the inactive queue either already belongs to this STA,
640 * or that if it belongs to another one - it isn't the reserved queue
641 */
642 for (i = minq; i <= maxq; i++)
643 if (mvm->queue_info[i].status == IWL_MVM_QUEUE_INACTIVE &&
644 (sta_id == mvm->queue_info[i].ra_sta_id ||
645 !mvm->queue_info[i].reserved))
646 return i;
647
648 return -ENOSPC;
649 }
650
iwl_mvm_reconfig_scd(struct iwl_mvm * mvm,int queue,int fifo,int sta_id,int tid,int frame_limit,u16 ssn)651 int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
652 int tid, int frame_limit, u16 ssn)
653 {
654 struct iwl_scd_txq_cfg_cmd cmd = {
655 .scd_queue = queue,
656 .action = SCD_CFG_ENABLE_QUEUE,
657 .window = frame_limit,
658 .sta_id = sta_id,
659 .ssn = cpu_to_le16(ssn),
660 .tx_fifo = fifo,
661 .aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
662 queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
663 .tid = tid,
664 };
665 int ret;
666
667 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
668 return -EINVAL;
669
670 spin_lock_bh(&mvm->queue_info_lock);
671 if (WARN(mvm->queue_info[queue].hw_queue_refcount == 0,
672 "Trying to reconfig unallocated queue %d\n", queue)) {
673 spin_unlock_bh(&mvm->queue_info_lock);
674 return -ENXIO;
675 }
676 spin_unlock_bh(&mvm->queue_info_lock);
677
678 IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
679
680 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
681 WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
682 queue, fifo, ret);
683
684 return ret;
685 }
686
iwl_mvm_update_txq_mapping(struct iwl_mvm * mvm,int queue,int mac80211_queue,u8 sta_id,u8 tid)687 static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, int queue,
688 int mac80211_queue, u8 sta_id, u8 tid)
689 {
690 bool enable_queue = true;
691
692 spin_lock_bh(&mvm->queue_info_lock);
693
694 /* Make sure this TID isn't already enabled */
695 if (mvm->queue_info[queue].tid_bitmap & BIT(tid)) {
696 spin_unlock_bh(&mvm->queue_info_lock);
697 IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n",
698 queue, tid);
699 return false;
700 }
701
702 /* Update mappings and refcounts */
703 if (mvm->queue_info[queue].hw_queue_refcount > 0)
704 enable_queue = false;
705
706 if (mac80211_queue != IEEE80211_INVAL_HW_QUEUE) {
707 WARN(mac80211_queue >=
708 BITS_PER_BYTE * sizeof(mvm->hw_queue_to_mac80211[0]),
709 "cannot track mac80211 queue %d (queue %d, sta %d, tid %d)\n",
710 mac80211_queue, queue, sta_id, tid);
711 mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue);
712 }
713
714 mvm->queue_info[queue].hw_queue_refcount++;
715 mvm->queue_info[queue].tid_bitmap |= BIT(tid);
716 mvm->queue_info[queue].ra_sta_id = sta_id;
717
718 if (enable_queue) {
719 if (tid != IWL_MAX_TID_COUNT)
720 mvm->queue_info[queue].mac80211_ac =
721 tid_to_mac80211_ac[tid];
722 else
723 mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
724
725 mvm->queue_info[queue].txq_tid = tid;
726 }
727
728 IWL_DEBUG_TX_QUEUES(mvm,
729 "Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
730 queue, mvm->queue_info[queue].hw_queue_refcount,
731 mvm->hw_queue_to_mac80211[queue]);
732
733 spin_unlock_bh(&mvm->queue_info_lock);
734
735 return enable_queue;
736 }
737
iwl_mvm_tvqm_enable_txq(struct iwl_mvm * mvm,int mac80211_queue,u8 sta_id,u8 tid,unsigned int timeout)738 int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, int mac80211_queue,
739 u8 sta_id, u8 tid, unsigned int timeout)
740 {
741 struct iwl_tx_queue_cfg_cmd cmd = {
742 .flags = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE),
743 .sta_id = sta_id,
744 .tid = tid,
745 };
746 int queue;
747
748 if (cmd.tid == IWL_MAX_TID_COUNT)
749 cmd.tid = IWL_MGMT_TID;
750 queue = iwl_trans_txq_alloc(mvm->trans, (void *)&cmd,
751 SCD_QUEUE_CFG, timeout);
752
753 if (queue < 0) {
754 IWL_DEBUG_TX_QUEUES(mvm,
755 "Failed allocating TXQ for sta %d tid %d, ret: %d\n",
756 sta_id, tid, queue);
757 return queue;
758 }
759
760 IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n",
761 queue, sta_id, tid);
762
763 mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue);
764 IWL_DEBUG_TX_QUEUES(mvm,
765 "Enabling TXQ #%d (mac80211 map:0x%x)\n",
766 queue, mvm->hw_queue_to_mac80211[queue]);
767
768 return queue;
769 }
770
iwl_mvm_enable_txq(struct iwl_mvm * mvm,int queue,int mac80211_queue,u16 ssn,const struct iwl_trans_txq_scd_cfg * cfg,unsigned int wdg_timeout)771 bool iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
772 u16 ssn, const struct iwl_trans_txq_scd_cfg *cfg,
773 unsigned int wdg_timeout)
774 {
775 struct iwl_scd_txq_cfg_cmd cmd = {
776 .scd_queue = queue,
777 .action = SCD_CFG_ENABLE_QUEUE,
778 .window = cfg->frame_limit,
779 .sta_id = cfg->sta_id,
780 .ssn = cpu_to_le16(ssn),
781 .tx_fifo = cfg->fifo,
782 .aggregate = cfg->aggregate,
783 .tid = cfg->tid,
784 };
785 bool inc_ssn;
786
787 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
788 return false;
789
790 /* Send the enabling command if we need to */
791 if (!iwl_mvm_update_txq_mapping(mvm, queue, mac80211_queue,
792 cfg->sta_id, cfg->tid))
793 return false;
794
795 inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn,
796 NULL, wdg_timeout);
797 if (inc_ssn)
798 le16_add_cpu(&cmd.ssn, 1);
799
800 WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
801 "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
802
803 return inc_ssn;
804 }
805
iwl_mvm_disable_txq(struct iwl_mvm * mvm,int queue,int mac80211_queue,u8 tid,u8 flags)806 int iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
807 u8 tid, u8 flags)
808 {
809 struct iwl_scd_txq_cfg_cmd cmd = {
810 .scd_queue = queue,
811 .action = SCD_CFG_DISABLE_QUEUE,
812 };
813 bool remove_mac_queue = mac80211_queue != IEEE80211_INVAL_HW_QUEUE;
814 int ret;
815
816 if (WARN_ON(remove_mac_queue && mac80211_queue >= IEEE80211_MAX_QUEUES))
817 return -EINVAL;
818
819 if (iwl_mvm_has_new_tx_api(mvm)) {
820 spin_lock_bh(&mvm->queue_info_lock);
821
822 if (remove_mac_queue)
823 mvm->hw_queue_to_mac80211[queue] &=
824 ~BIT(mac80211_queue);
825
826 spin_unlock_bh(&mvm->queue_info_lock);
827
828 iwl_trans_txq_free(mvm->trans, queue);
829
830 return 0;
831 }
832
833 spin_lock_bh(&mvm->queue_info_lock);
834
835 if (WARN_ON(mvm->queue_info[queue].hw_queue_refcount == 0)) {
836 spin_unlock_bh(&mvm->queue_info_lock);
837 return 0;
838 }
839
840 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
841
842 /*
843 * If there is another TID with the same AC - don't remove the MAC queue
844 * from the mapping
845 */
846 if (tid < IWL_MAX_TID_COUNT) {
847 unsigned long tid_bitmap =
848 mvm->queue_info[queue].tid_bitmap;
849 int ac = tid_to_mac80211_ac[tid];
850 int i;
851
852 for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) {
853 if (tid_to_mac80211_ac[i] == ac)
854 remove_mac_queue = false;
855 }
856 }
857
858 if (remove_mac_queue)
859 mvm->hw_queue_to_mac80211[queue] &=
860 ~BIT(mac80211_queue);
861 mvm->queue_info[queue].hw_queue_refcount--;
862
863 cmd.action = mvm->queue_info[queue].hw_queue_refcount ?
864 SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;
865 if (cmd.action == SCD_CFG_DISABLE_QUEUE)
866 mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;
867
868 IWL_DEBUG_TX_QUEUES(mvm,
869 "Disabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
870 queue,
871 mvm->queue_info[queue].hw_queue_refcount,
872 mvm->hw_queue_to_mac80211[queue]);
873
874 /* If the queue is still enabled - nothing left to do in this func */
875 if (cmd.action == SCD_CFG_ENABLE_QUEUE) {
876 spin_unlock_bh(&mvm->queue_info_lock);
877 return 0;
878 }
879
880 cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
881 cmd.tid = mvm->queue_info[queue].txq_tid;
882
883 /* Make sure queue info is correct even though we overwrite it */
884 WARN(mvm->queue_info[queue].hw_queue_refcount ||
885 mvm->queue_info[queue].tid_bitmap ||
886 mvm->hw_queue_to_mac80211[queue],
887 "TXQ #%d info out-of-sync - refcount=%d, mac map=0x%x, tid=0x%x\n",
888 queue, mvm->queue_info[queue].hw_queue_refcount,
889 mvm->hw_queue_to_mac80211[queue],
890 mvm->queue_info[queue].tid_bitmap);
891
892 /* If we are here - the queue is freed and we can zero out these vals */
893 mvm->queue_info[queue].hw_queue_refcount = 0;
894 mvm->queue_info[queue].tid_bitmap = 0;
895 mvm->hw_queue_to_mac80211[queue] = 0;
896
897 /* Regardless if this is a reserved TXQ for a STA - mark it as false */
898 mvm->queue_info[queue].reserved = false;
899
900 spin_unlock_bh(&mvm->queue_info_lock);
901
902 iwl_trans_txq_disable(mvm->trans, queue, false);
903 ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags,
904 sizeof(struct iwl_scd_txq_cfg_cmd), &cmd);
905
906 if (ret)
907 IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
908 queue, ret);
909 return ret;
910 }
911
912 /**
913 * iwl_mvm_send_lq_cmd() - Send link quality command
914 * @init: This command is sent as part of station initialization right
915 * after station has been added.
916 *
917 * The link quality command is sent as the last step of station creation.
918 * This is the special case in which init is set and we call a callback in
919 * this case to clear the state indicating that station creation is in
920 * progress.
921 */
iwl_mvm_send_lq_cmd(struct iwl_mvm * mvm,struct iwl_lq_cmd * lq,bool init)922 int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
923 {
924 struct iwl_host_cmd cmd = {
925 .id = LQ_CMD,
926 .len = { sizeof(struct iwl_lq_cmd), },
927 .flags = init ? 0 : CMD_ASYNC,
928 .data = { lq, },
929 };
930
931 if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA))
932 return -EINVAL;
933
934 return iwl_mvm_send_cmd(mvm, &cmd);
935 }
936
937 /**
938 * iwl_mvm_update_smps - Get a request to change the SMPS mode
939 * @req_type: The part of the driver who call for a change.
940 * @smps_requests: The request to change the SMPS mode.
941 *
942 * Get a requst to change the SMPS mode,
943 * and change it according to all other requests in the driver.
944 */
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)945 void iwl_mvm_update_smps(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
946 enum iwl_mvm_smps_type_request req_type,
947 enum ieee80211_smps_mode smps_request)
948 {
949 struct iwl_mvm_vif *mvmvif;
950 enum ieee80211_smps_mode smps_mode;
951 int i;
952
953 lockdep_assert_held(&mvm->mutex);
954
955 /* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
956 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
957 return;
958
959 if (vif->type == NL80211_IFTYPE_AP)
960 smps_mode = IEEE80211_SMPS_OFF;
961 else
962 smps_mode = IEEE80211_SMPS_AUTOMATIC;
963
964 mvmvif = iwl_mvm_vif_from_mac80211(vif);
965 mvmvif->smps_requests[req_type] = smps_request;
966 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
967 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
968 smps_mode = IEEE80211_SMPS_STATIC;
969 break;
970 }
971 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
972 smps_mode = IEEE80211_SMPS_DYNAMIC;
973 }
974
975 ieee80211_request_smps(vif, smps_mode);
976 }
977
iwl_mvm_request_statistics(struct iwl_mvm * mvm,bool clear)978 int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
979 {
980 struct iwl_statistics_cmd scmd = {
981 .flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
982 };
983 struct iwl_host_cmd cmd = {
984 .id = STATISTICS_CMD,
985 .len[0] = sizeof(scmd),
986 .data[0] = &scmd,
987 .flags = CMD_WANT_SKB,
988 };
989 int ret;
990
991 ret = iwl_mvm_send_cmd(mvm, &cmd);
992 if (ret)
993 return ret;
994
995 iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
996 iwl_free_resp(&cmd);
997
998 if (clear)
999 iwl_mvm_accu_radio_stats(mvm);
1000
1001 return 0;
1002 }
1003
iwl_mvm_accu_radio_stats(struct iwl_mvm * mvm)1004 void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
1005 {
1006 mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
1007 mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
1008 mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
1009 mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
1010 }
1011
iwl_mvm_diversity_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)1012 static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
1013 struct ieee80211_vif *vif)
1014 {
1015 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1016 bool *result = _data;
1017 int i;
1018
1019 for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
1020 if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
1021 mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
1022 *result = false;
1023 }
1024 }
1025
iwl_mvm_rx_diversity_allowed(struct iwl_mvm * mvm)1026 bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
1027 {
1028 bool result = true;
1029
1030 lockdep_assert_held(&mvm->mutex);
1031
1032 if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
1033 return false;
1034
1035 if (mvm->cfg->rx_with_siso_diversity)
1036 return false;
1037
1038 ieee80211_iterate_active_interfaces_atomic(
1039 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1040 iwl_mvm_diversity_iter, &result);
1041
1042 return result;
1043 }
1044
iwl_mvm_update_low_latency(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool prev)1045 int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1046 bool prev)
1047 {
1048 struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
1049 int res;
1050
1051 lockdep_assert_held(&mvm->mutex);
1052
1053 if (iwl_mvm_vif_low_latency(mvmvif) == prev)
1054 return 0;
1055
1056 res = iwl_mvm_update_quotas(mvm, false, NULL);
1057 if (res)
1058 return res;
1059
1060 iwl_mvm_bt_coex_vif_change(mvm);
1061
1062 return iwl_mvm_power_update_mac(mvm);
1063 }
1064
iwl_mvm_ll_iter(void * _data,u8 * mac,struct ieee80211_vif * vif)1065 static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
1066 {
1067 bool *result = _data;
1068
1069 if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif)))
1070 *result = true;
1071 }
1072
iwl_mvm_low_latency(struct iwl_mvm * mvm)1073 bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
1074 {
1075 bool result = false;
1076
1077 ieee80211_iterate_active_interfaces_atomic(
1078 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1079 iwl_mvm_ll_iter, &result);
1080
1081 return result;
1082 }
1083
1084 struct iwl_bss_iter_data {
1085 struct ieee80211_vif *vif;
1086 bool error;
1087 };
1088
iwl_mvm_bss_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1089 static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
1090 struct ieee80211_vif *vif)
1091 {
1092 struct iwl_bss_iter_data *data = _data;
1093
1094 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
1095 return;
1096
1097 if (data->vif) {
1098 data->error = true;
1099 return;
1100 }
1101
1102 data->vif = vif;
1103 }
1104
iwl_mvm_get_bss_vif(struct iwl_mvm * mvm)1105 struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
1106 {
1107 struct iwl_bss_iter_data bss_iter_data = {};
1108
1109 ieee80211_iterate_active_interfaces_atomic(
1110 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1111 iwl_mvm_bss_iface_iterator, &bss_iter_data);
1112
1113 if (bss_iter_data.error) {
1114 IWL_ERR(mvm, "More than one managed interface active!\n");
1115 return ERR_PTR(-EINVAL);
1116 }
1117
1118 return bss_iter_data.vif;
1119 }
1120
1121 struct iwl_sta_iter_data {
1122 bool assoc;
1123 };
1124
iwl_mvm_sta_iface_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1125 static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
1126 struct ieee80211_vif *vif)
1127 {
1128 struct iwl_sta_iter_data *data = _data;
1129
1130 if (vif->type != NL80211_IFTYPE_STATION)
1131 return;
1132
1133 if (vif->bss_conf.assoc)
1134 data->assoc = true;
1135 }
1136
iwl_mvm_is_vif_assoc(struct iwl_mvm * mvm)1137 bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
1138 {
1139 struct iwl_sta_iter_data data = {
1140 .assoc = false,
1141 };
1142
1143 ieee80211_iterate_active_interfaces_atomic(mvm->hw,
1144 IEEE80211_IFACE_ITER_NORMAL,
1145 iwl_mvm_sta_iface_iterator,
1146 &data);
1147 return data.assoc;
1148 }
1149
iwl_mvm_get_wd_timeout(struct iwl_mvm * mvm,struct ieee80211_vif * vif,bool tdls,bool cmd_q)1150 unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
1151 struct ieee80211_vif *vif,
1152 bool tdls, bool cmd_q)
1153 {
1154 struct iwl_fw_dbg_trigger_tlv *trigger;
1155 struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
1156 unsigned int default_timeout =
1157 cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout;
1158
1159 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) {
1160 /*
1161 * We can't know when the station is asleep or awake, so we
1162 * must disable the queue hang detection.
1163 */
1164 if (fw_has_capa(&mvm->fw->ucode_capa,
1165 IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
1166 vif && vif->type == NL80211_IFTYPE_AP)
1167 return IWL_WATCHDOG_DISABLED;
1168 return iwlmvm_mod_params.tfd_q_hang_detect ?
1169 default_timeout : IWL_WATCHDOG_DISABLED;
1170 }
1171
1172 trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
1173 txq_timer = (void *)trigger->data;
1174
1175 if (tdls)
1176 return le32_to_cpu(txq_timer->tdls);
1177
1178 if (cmd_q)
1179 return le32_to_cpu(txq_timer->command_queue);
1180
1181 if (WARN_ON(!vif))
1182 return default_timeout;
1183
1184 switch (ieee80211_vif_type_p2p(vif)) {
1185 case NL80211_IFTYPE_ADHOC:
1186 return le32_to_cpu(txq_timer->ibss);
1187 case NL80211_IFTYPE_STATION:
1188 return le32_to_cpu(txq_timer->bss);
1189 case NL80211_IFTYPE_AP:
1190 return le32_to_cpu(txq_timer->softap);
1191 case NL80211_IFTYPE_P2P_CLIENT:
1192 return le32_to_cpu(txq_timer->p2p_client);
1193 case NL80211_IFTYPE_P2P_GO:
1194 return le32_to_cpu(txq_timer->p2p_go);
1195 case NL80211_IFTYPE_P2P_DEVICE:
1196 return le32_to_cpu(txq_timer->p2p_device);
1197 case NL80211_IFTYPE_MONITOR:
1198 return default_timeout;
1199 default:
1200 WARN_ON(1);
1201 return mvm->cfg->base_params->wd_timeout;
1202 }
1203 }
1204
iwl_mvm_connection_loss(struct iwl_mvm * mvm,struct ieee80211_vif * vif,const char * errmsg)1205 void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
1206 const char *errmsg)
1207 {
1208 struct iwl_fw_dbg_trigger_tlv *trig;
1209 struct iwl_fw_dbg_trigger_mlme *trig_mlme;
1210
1211 if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
1212 goto out;
1213
1214 trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
1215 trig_mlme = (void *)trig->data;
1216 if (!iwl_fw_dbg_trigger_check_stop(&mvm->fwrt,
1217 ieee80211_vif_to_wdev(vif), trig))
1218 goto out;
1219
1220 if (trig_mlme->stop_connection_loss &&
1221 --trig_mlme->stop_connection_loss)
1222 goto out;
1223
1224 iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
1225
1226 out:
1227 ieee80211_connection_loss(vif);
1228 }
1229
1230 /*
1231 * Remove inactive TIDs of a given queue.
1232 * If all queue TIDs are inactive - mark the queue as inactive
1233 * If only some the queue TIDs are inactive - unmap them from the queue
1234 */
iwl_mvm_remove_inactive_tids(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,int queue,unsigned long tid_bitmap)1235 static void iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
1236 struct iwl_mvm_sta *mvmsta, int queue,
1237 unsigned long tid_bitmap)
1238 {
1239 int tid;
1240
1241 lockdep_assert_held(&mvmsta->lock);
1242 lockdep_assert_held(&mvm->queue_info_lock);
1243
1244 if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
1245 return;
1246
1247 /* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
1248 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1249 /* If some TFDs are still queued - don't mark TID as inactive */
1250 if (iwl_mvm_tid_queued(mvm, &mvmsta->tid_data[tid]))
1251 tid_bitmap &= ~BIT(tid);
1252
1253 /* Don't mark as inactive any TID that has an active BA */
1254 if (mvmsta->tid_data[tid].state != IWL_AGG_OFF)
1255 tid_bitmap &= ~BIT(tid);
1256 }
1257
1258 /* If all TIDs in the queue are inactive - mark queue as inactive. */
1259 if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
1260 mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE;
1261
1262 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1)
1263 mvmsta->tid_data[tid].is_tid_active = false;
1264
1265 IWL_DEBUG_TX_QUEUES(mvm, "Queue %d marked as inactive\n",
1266 queue);
1267 return;
1268 }
1269
1270 /*
1271 * If we are here, this is a shared queue and not all TIDs timed-out.
1272 * Remove the ones that did.
1273 */
1274 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1275 int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]];
1276
1277 mvmsta->tid_data[tid].txq_id = IWL_MVM_INVALID_QUEUE;
1278 mvm->hw_queue_to_mac80211[queue] &= ~BIT(mac_queue);
1279 mvm->queue_info[queue].hw_queue_refcount--;
1280 mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
1281 mvmsta->tid_data[tid].is_tid_active = false;
1282
1283 IWL_DEBUG_TX_QUEUES(mvm,
1284 "Removing inactive TID %d from shared Q:%d\n",
1285 tid, queue);
1286 }
1287
1288 IWL_DEBUG_TX_QUEUES(mvm,
1289 "TXQ #%d left with tid bitmap 0x%x\n", queue,
1290 mvm->queue_info[queue].tid_bitmap);
1291
1292 /*
1293 * There may be different TIDs with the same mac queues, so make
1294 * sure all TIDs have existing corresponding mac queues enabled
1295 */
1296 tid_bitmap = mvm->queue_info[queue].tid_bitmap;
1297 for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
1298 mvm->hw_queue_to_mac80211[queue] |=
1299 BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]);
1300 }
1301
1302 /* If the queue is marked as shared - "unshare" it */
1303 if (mvm->queue_info[queue].hw_queue_refcount == 1 &&
1304 mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
1305 mvm->queue_info[queue].status = IWL_MVM_QUEUE_RECONFIGURING;
1306 IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
1307 queue);
1308 }
1309 }
1310
iwl_mvm_inactivity_check(struct iwl_mvm * mvm)1311 void iwl_mvm_inactivity_check(struct iwl_mvm *mvm)
1312 {
1313 unsigned long timeout_queues_map = 0;
1314 unsigned long now = jiffies;
1315 int i;
1316
1317 if (iwl_mvm_has_new_tx_api(mvm))
1318 return;
1319
1320 spin_lock_bh(&mvm->queue_info_lock);
1321 for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
1322 if (mvm->queue_info[i].hw_queue_refcount > 0)
1323 timeout_queues_map |= BIT(i);
1324 spin_unlock_bh(&mvm->queue_info_lock);
1325
1326 rcu_read_lock();
1327
1328 /*
1329 * If a queue time outs - mark it as INACTIVE (don't remove right away
1330 * if we don't have to.) This is an optimization in case traffic comes
1331 * later, and we don't HAVE to use a currently-inactive queue
1332 */
1333 for_each_set_bit(i, &timeout_queues_map, IWL_MAX_HW_QUEUES) {
1334 struct ieee80211_sta *sta;
1335 struct iwl_mvm_sta *mvmsta;
1336 u8 sta_id;
1337 int tid;
1338 unsigned long inactive_tid_bitmap = 0;
1339 unsigned long queue_tid_bitmap;
1340
1341 spin_lock_bh(&mvm->queue_info_lock);
1342 queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
1343
1344 /* If TXQ isn't in active use anyway - nothing to do here... */
1345 if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
1346 mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) {
1347 spin_unlock_bh(&mvm->queue_info_lock);
1348 continue;
1349 }
1350
1351 /* Check to see if there are inactive TIDs on this queue */
1352 for_each_set_bit(tid, &queue_tid_bitmap,
1353 IWL_MAX_TID_COUNT + 1) {
1354 if (time_after(mvm->queue_info[i].last_frame_time[tid] +
1355 IWL_MVM_DQA_QUEUE_TIMEOUT, now))
1356 continue;
1357
1358 inactive_tid_bitmap |= BIT(tid);
1359 }
1360 spin_unlock_bh(&mvm->queue_info_lock);
1361
1362 /* If all TIDs are active - finish check on this queue */
1363 if (!inactive_tid_bitmap)
1364 continue;
1365
1366 /*
1367 * If we are here - the queue hadn't been served recently and is
1368 * in use
1369 */
1370
1371 sta_id = mvm->queue_info[i].ra_sta_id;
1372 sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
1373
1374 /*
1375 * If the STA doesn't exist anymore, it isn't an error. It could
1376 * be that it was removed since getting the queues, and in this
1377 * case it should've inactivated its queues anyway.
1378 */
1379 if (IS_ERR_OR_NULL(sta))
1380 continue;
1381
1382 mvmsta = iwl_mvm_sta_from_mac80211(sta);
1383
1384 spin_lock_bh(&mvmsta->lock);
1385 spin_lock(&mvm->queue_info_lock);
1386 iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
1387 inactive_tid_bitmap);
1388 spin_unlock(&mvm->queue_info_lock);
1389 spin_unlock_bh(&mvmsta->lock);
1390 }
1391
1392 rcu_read_unlock();
1393 }
1394
iwl_mvm_get_sync_time(struct iwl_mvm * mvm,u32 * gp2,u64 * boottime)1395 void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
1396 {
1397 bool ps_disabled;
1398
1399 lockdep_assert_held(&mvm->mutex);
1400
1401 /* Disable power save when reading GP2 */
1402 ps_disabled = mvm->ps_disabled;
1403 if (!ps_disabled) {
1404 mvm->ps_disabled = true;
1405 iwl_mvm_power_update_device(mvm);
1406 }
1407
1408 *gp2 = iwl_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
1409 *boottime = ktime_get_boot_ns();
1410
1411 if (!ps_disabled) {
1412 mvm->ps_disabled = ps_disabled;
1413 iwl_mvm_power_update_device(mvm);
1414 }
1415 }
1416
iwl_mvm_send_lqm_cmd(struct ieee80211_vif * vif,enum iwl_lqm_cmd_operatrions operation,u32 duration,u32 timeout)1417 int iwl_mvm_send_lqm_cmd(struct ieee80211_vif *vif,
1418 enum iwl_lqm_cmd_operatrions operation,
1419 u32 duration, u32 timeout)
1420 {
1421 struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
1422 struct iwl_link_qual_msrmnt_cmd cmd = {
1423 .cmd_operation = cpu_to_le32(operation),
1424 .mac_id = cpu_to_le32(mvm_vif->id),
1425 .measurement_time = cpu_to_le32(duration),
1426 .timeout = cpu_to_le32(timeout),
1427 };
1428 u32 cmdid =
1429 iwl_cmd_id(LINK_QUALITY_MEASUREMENT_CMD, MAC_CONF_GROUP, 0);
1430 int ret;
1431
1432 if (!fw_has_capa(&mvm_vif->mvm->fw->ucode_capa,
1433 IWL_UCODE_TLV_CAPA_LQM_SUPPORT))
1434 return -EOPNOTSUPP;
1435
1436 if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
1437 return -EINVAL;
1438
1439 switch (operation) {
1440 case LQM_CMD_OPERATION_START_MEASUREMENT:
1441 if (iwl_mvm_lqm_active(mvm_vif->mvm))
1442 return -EBUSY;
1443 if (!vif->bss_conf.assoc)
1444 return -EINVAL;
1445 mvm_vif->lqm_active = true;
1446 break;
1447 case LQM_CMD_OPERATION_STOP_MEASUREMENT:
1448 if (!iwl_mvm_lqm_active(mvm_vif->mvm))
1449 return -EINVAL;
1450 break;
1451 default:
1452 return -EINVAL;
1453 }
1454
1455 ret = iwl_mvm_send_cmd_pdu(mvm_vif->mvm, cmdid, 0, sizeof(cmd),
1456 &cmd);
1457
1458 /* command failed - roll back lqm_active state */
1459 if (ret) {
1460 mvm_vif->lqm_active =
1461 operation == LQM_CMD_OPERATION_STOP_MEASUREMENT;
1462 }
1463
1464 return ret;
1465 }
1466
iwl_mvm_lqm_active_iterator(void * _data,u8 * mac,struct ieee80211_vif * vif)1467 static void iwl_mvm_lqm_active_iterator(void *_data, u8 *mac,
1468 struct ieee80211_vif *vif)
1469 {
1470 struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
1471 bool *lqm_active = _data;
1472
1473 *lqm_active = *lqm_active || mvm_vif->lqm_active;
1474 }
1475
iwl_mvm_lqm_active(struct iwl_mvm * mvm)1476 bool iwl_mvm_lqm_active(struct iwl_mvm *mvm)
1477 {
1478 bool ret = false;
1479
1480 lockdep_assert_held(&mvm->mutex);
1481 ieee80211_iterate_active_interfaces_atomic(
1482 mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
1483 iwl_mvm_lqm_active_iterator, &ret);
1484
1485 return ret;
1486 }
1487