utils.c 28 KB
Newer Older
Johannes Berg's avatar
Johannes Berg committed
1 2 3 4 5 6 7
/******************************************************************************
 *
 * This file is provided under a dual BSD/GPLv2 license.  When using or
 * redistributing this file, you may do so under either license.
 *
 * GPL LICENSE SUMMARY
 *
8
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
9
 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
Johannes Berg's avatar
Johannes Berg committed
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
 * USA
 *
 * The full GNU General Public License is included in this distribution
26
 * in the file called COPYING.
Johannes Berg's avatar
Johannes Berg committed
27 28 29 30 31 32 33
 *
 * Contact Information:
 *  Intel Linux Wireless <ilw@linux.intel.com>
 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
 *
 * BSD LICENSE
 *
34
 * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
35
 * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
Johannes Berg's avatar
Johannes Berg committed
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *  * Neither the name Intel Corporation nor the names of its
 *    contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 *****************************************************************************/
#include <net/mac80211.h>

#include "iwl-debug.h"
#include "iwl-io.h"
69
#include "iwl-prph.h"
Johannes Berg's avatar
Johannes Berg committed
70 71 72 73 74 75 76 77 78 79 80 81

#include "mvm.h"
#include "fw-api-rs.h"

/*
 * Will return 0 even if the cmd failed when RFKILL is asserted unless
 * CMD_WANT_SKB is set in cmd->flags.
 */
int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd)
{
	int ret;

82 83 84 85 86
#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
	if (WARN_ON(mvm->d3_test_active))
		return -EIO;
#endif

Johannes Berg's avatar
Johannes Berg committed
87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135
	/*
	 * Synchronous commands from this op-mode must hold
	 * the mutex, this ensures we don't try to send two
	 * (or more) synchronous commands at a time.
	 */
	if (!(cmd->flags & CMD_ASYNC))
		lockdep_assert_held(&mvm->mutex);

	ret = iwl_trans_send_cmd(mvm->trans, cmd);

	/*
	 * If the caller wants the SKB, then don't hide any problems, the
	 * caller might access the response buffer which will be NULL if
	 * the command failed.
	 */
	if (cmd->flags & CMD_WANT_SKB)
		return ret;

	/* Silently ignore failures if RFKILL is asserted */
	if (!ret || ret == -ERFKILL)
		return 0;
	return ret;
}

int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u8 id,
			 u32 flags, u16 len, const void *data)
{
	struct iwl_host_cmd cmd = {
		.id = id,
		.len = { len, },
		.data = { data, },
		.flags = flags,
	};

	return iwl_mvm_send_cmd(mvm, &cmd);
}

/*
 * We assume that the caller set the status to the sucess value
 */
int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd,
			    u32 *status)
{
	struct iwl_rx_packet *pkt;
	struct iwl_cmd_response *resp;
	int ret, resp_len;

	lockdep_assert_held(&mvm->mutex);

136 137 138 139 140
#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
	if (WARN_ON(mvm->d3_test_active))
		return -EIO;
#endif

Johannes Berg's avatar
Johannes Berg committed
141 142 143 144 145 146 147 148
	/*
	 * Only synchronous commands can wait for status,
	 * we use WANT_SKB so the caller can't.
	 */
	if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB),
		      "cmd flags %x", cmd->flags))
		return -EINVAL;

Emmanuel Grumbach's avatar
Emmanuel Grumbach committed
149
	cmd->flags |= CMD_WANT_SKB;
Johannes Berg's avatar
Johannes Berg committed
150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173

	ret = iwl_trans_send_cmd(mvm->trans, cmd);
	if (ret == -ERFKILL) {
		/*
		 * The command failed because of RFKILL, don't update
		 * the status, leave it as success and return 0.
		 */
		return 0;
	} else if (ret) {
		return ret;
	}

	pkt = cmd->resp_pkt;
	/* Can happen if RFKILL is asserted */
	if (!pkt) {
		ret = 0;
		goto out_free_resp;
	}

	if (pkt->hdr.flags & IWL_CMD_FAILED_MSK) {
		ret = -EIO;
		goto out_free_resp;
	}

174 175
	resp_len = iwl_rx_packet_payload_len(pkt);
	if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
Johannes Berg's avatar
Johannes Berg committed
176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268
		ret = -EIO;
		goto out_free_resp;
	}

	resp = (void *)pkt->data;
	*status = le32_to_cpu(resp->status);
 out_free_resp:
	iwl_free_resp(cmd);
	return ret;
}

/*
 * We assume that the caller set the status to the sucess value
 */
int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u8 id, u16 len,
				const void *data, u32 *status)
{
	struct iwl_host_cmd cmd = {
		.id = id,
		.len = { len, },
		.data = { data, },
	};

	return iwl_mvm_send_cmd_status(mvm, &cmd, status);
}

#define IWL_DECLARE_RATE_INFO(r) \
	[IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP

/*
 * Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP
 */
static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = {
	IWL_DECLARE_RATE_INFO(1),
	IWL_DECLARE_RATE_INFO(2),
	IWL_DECLARE_RATE_INFO(5),
	IWL_DECLARE_RATE_INFO(11),
	IWL_DECLARE_RATE_INFO(6),
	IWL_DECLARE_RATE_INFO(9),
	IWL_DECLARE_RATE_INFO(12),
	IWL_DECLARE_RATE_INFO(18),
	IWL_DECLARE_RATE_INFO(24),
	IWL_DECLARE_RATE_INFO(36),
	IWL_DECLARE_RATE_INFO(48),
	IWL_DECLARE_RATE_INFO(54),
};

int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags,
					enum ieee80211_band band)
{
	int rate = rate_n_flags & RATE_LEGACY_RATE_MSK;
	int idx;
	int band_offset = 0;

	/* Legacy rate format, search for match in table */
	if (band == IEEE80211_BAND_5GHZ)
		band_offset = IWL_FIRST_OFDM_RATE;
	for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++)
		if (fw_rate_idx_to_plcp[idx] == rate)
			return idx - band_offset;

	return -1;
}

u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx)
{
	/* Get PLCP rate for tx_cmd->rate_n_flags */
	return fw_rate_idx_to_plcp[rate_idx];
}

int iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb,
			  struct iwl_device_cmd *cmd)
{
	struct iwl_rx_packet *pkt = rxb_addr(rxb);
	struct iwl_error_resp *err_resp = (void *)pkt->data;

	IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n",
		le32_to_cpu(err_resp->error_type), err_resp->cmd_id);
	IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n",
		le16_to_cpu(err_resp->bad_cmd_seq_num),
		le32_to_cpu(err_resp->error_service));
	IWL_ERR(mvm, "FW Error notification: timestamp 0x%16llX\n",
		le64_to_cpu(err_resp->timestamp));
	return 0;
}

/*
 * Returns the first antenna as ANT_[ABC], as defined in iwl-config.h.
 * The parameter should also be a combination of ANT_[ABC].
 */
u8 first_antenna(u8 mask)
{
	BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */
269 270 271
	if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
		return BIT(0);
	return BIT(ffs(mask) - 1);
Johannes Berg's avatar
Johannes Berg committed
272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294
}

/*
 * Toggles between TX antennas to send the probe request on.
 * Receives the bitmask of valid TX antennas and the *index* used
 * for the last TX, and returns the next valid *index* to use.
 * In order to set it in the tx_cmd, must do BIT(idx).
 */
u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx)
{
	u8 ind = last_idx;
	int i;

	for (i = 0; i < RATE_MCS_ANT_NUM; i++) {
		ind = (ind + 1) % RATE_MCS_ANT_NUM;
		if (valid & BIT(ind))
			return ind;
	}

	WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
	return last_idx;
}

295 296
static const struct {
	const char *name;
Johannes Berg's avatar
Johannes Berg committed
297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334
	u8 num;
} advanced_lookup[] = {
	{ "NMI_INTERRUPT_WDG", 0x34 },
	{ "SYSASSERT", 0x35 },
	{ "UCODE_VERSION_MISMATCH", 0x37 },
	{ "BAD_COMMAND", 0x38 },
	{ "NMI_INTERRUPT_DATA_ACTION_PT", 0x3C },
	{ "FATAL_ERROR", 0x3D },
	{ "NMI_TRM_HW_ERR", 0x46 },
	{ "NMI_INTERRUPT_TRM", 0x4C },
	{ "NMI_INTERRUPT_BREAK_POINT", 0x54 },
	{ "NMI_INTERRUPT_WDG_RXF_FULL", 0x5C },
	{ "NMI_INTERRUPT_WDG_NO_RBD_RXF_FULL", 0x64 },
	{ "NMI_INTERRUPT_HOST", 0x66 },
	{ "NMI_INTERRUPT_ACTION_PT", 0x7C },
	{ "NMI_INTERRUPT_UNKNOWN", 0x84 },
	{ "NMI_INTERRUPT_INST_ACTION_PT", 0x86 },
	{ "ADVANCED_SYSASSERT", 0 },
};

static const char *desc_lookup(u32 num)
{
	int i;

	for (i = 0; i < ARRAY_SIZE(advanced_lookup) - 1; i++)
		if (advanced_lookup[i].num == num)
			return advanced_lookup[i].name;

	/* No entry matches 'num', so it is the last: ADVANCED_SYSASSERT */
	return advanced_lookup[i].name;
}

/*
 * Note: This structure is read from the device with IO accesses,
 * and the reading already does the endian conversion. As it is
 * read with u32-sized accesses, any members with a different size
 * need to be ordered correctly though!
 */
335
struct iwl_error_event_table_v1 {
Johannes Berg's avatar
Johannes Berg committed
336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379
	u32 valid;		/* (nonzero) valid, (0) log is empty */
	u32 error_id;		/* type of error */
	u32 pc;			/* program counter */
	u32 blink1;		/* branch link */
	u32 blink2;		/* branch link */
	u32 ilink1;		/* interrupt link */
	u32 ilink2;		/* interrupt link */
	u32 data1;		/* error-specific data */
	u32 data2;		/* error-specific data */
	u32 data3;		/* error-specific data */
	u32 bcon_time;		/* beacon timer */
	u32 tsf_low;		/* network timestamp function timer */
	u32 tsf_hi;		/* network timestamp function timer */
	u32 gp1;		/* GP1 timer register */
	u32 gp2;		/* GP2 timer register */
	u32 gp3;		/* GP3 timer register */
	u32 ucode_ver;		/* uCode version */
	u32 hw_ver;		/* HW Silicon version */
	u32 brd_ver;		/* HW board version */
	u32 log_pc;		/* log program counter */
	u32 frame_ptr;		/* frame pointer */
	u32 stack_ptr;		/* stack pointer */
	u32 hcmd;		/* last host command header */
	u32 isr0;		/* isr status register LMPM_NIC_ISR0:
				 * rxtx_flag */
	u32 isr1;		/* isr status register LMPM_NIC_ISR1:
				 * host_flag */
	u32 isr2;		/* isr status register LMPM_NIC_ISR2:
				 * enc_flag */
	u32 isr3;		/* isr status register LMPM_NIC_ISR3:
				 * time_flag */
	u32 isr4;		/* isr status register LMPM_NIC_ISR4:
				 * wico interrupt */
	u32 isr_pref;		/* isr status register LMPM_NIC_PREF_STAT */
	u32 wait_event;		/* wait event() caller address */
	u32 l2p_control;	/* L2pControlField */
	u32 l2p_duration;	/* L2pDurationField */
	u32 l2p_mhvalid;	/* L2pMhValidBits */
	u32 l2p_addr_match;	/* L2pAddrMatchStat */
	u32 lmpm_pmg_sel;	/* indicate which clocks are turned on
				 * (LMPM_PMG_SEL) */
	u32 u_timestamp;	/* indicate when the date and time of the
				 * compilation */
	u32 flow_handler;	/* FH read/write pointers, RX credit */
380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428
} __packed /* LOG_ERROR_TABLE_API_S_VER_1 */;

struct iwl_error_event_table {
	u32 valid;		/* (nonzero) valid, (0) log is empty */
	u32 error_id;		/* type of error */
	u32 pc;			/* program counter */
	u32 blink1;		/* branch link */
	u32 blink2;		/* branch link */
	u32 ilink1;		/* interrupt link */
	u32 ilink2;		/* interrupt link */
	u32 data1;		/* error-specific data */
	u32 data2;		/* error-specific data */
	u32 data3;		/* error-specific data */
	u32 bcon_time;		/* beacon timer */
	u32 tsf_low;		/* network timestamp function timer */
	u32 tsf_hi;		/* network timestamp function timer */
	u32 gp1;		/* GP1 timer register */
	u32 gp2;		/* GP2 timer register */
	u32 gp3;		/* GP3 timer register */
	u32 major;		/* uCode version major */
	u32 minor;		/* uCode version minor */
	u32 hw_ver;		/* HW Silicon version */
	u32 brd_ver;		/* HW board version */
	u32 log_pc;		/* log program counter */
	u32 frame_ptr;		/* frame pointer */
	u32 stack_ptr;		/* stack pointer */
	u32 hcmd;		/* last host command header */
	u32 isr0;		/* isr status register LMPM_NIC_ISR0:
				 * rxtx_flag */
	u32 isr1;		/* isr status register LMPM_NIC_ISR1:
				 * host_flag */
	u32 isr2;		/* isr status register LMPM_NIC_ISR2:
				 * enc_flag */
	u32 isr3;		/* isr status register LMPM_NIC_ISR3:
				 * time_flag */
	u32 isr4;		/* isr status register LMPM_NIC_ISR4:
				 * wico interrupt */
	u32 isr_pref;		/* isr status register LMPM_NIC_PREF_STAT */
	u32 wait_event;		/* wait event() caller address */
	u32 l2p_control;	/* L2pControlField */
	u32 l2p_duration;	/* L2pDurationField */
	u32 l2p_mhvalid;	/* L2pMhValidBits */
	u32 l2p_addr_match;	/* L2pAddrMatchStat */
	u32 lmpm_pmg_sel;	/* indicate which clocks are turned on
				 * (LMPM_PMG_SEL) */
	u32 u_timestamp;	/* indicate when the date and time of the
				 * compilation */
	u32 flow_handler;	/* FH read/write pointers, RX credit */
} __packed /* LOG_ERROR_TABLE_API_S_VER_2 */;
Johannes Berg's avatar
Johannes Berg committed
429

430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445
/*
 * UMAC error struct - relevant starting from family 8000 chip.
 * Note: This structure is read from the device with IO accesses,
 * and the reading already does the endian conversion. As it is
 * read with u32-sized accesses, any members with a different size
 * need to be ordered correctly though!
 */
struct iwl_umac_error_event_table {
	u32 valid;		/* (nonzero) valid, (0) log is empty */
	u32 error_id;		/* type of error */
	u32 blink1;		/* branch link */
	u32 blink2;		/* branch link */
	u32 ilink1;		/* interrupt link */
	u32 ilink2;		/* interrupt link */
	u32 data1;		/* error-specific data */
	u32 data2;		/* error-specific data */
446
	u32 data3;		/* error-specific data */
447 448
	u32 umac_major;
	u32 umac_minor;
449 450
	u32 frame_pointer;	/* core register 27*/
	u32 stack_pointer;	/* core register 28 */
451
	u32 cmd_header;		/* latest host cmd sent to UMAC */
452
	u32 nic_isr_pref;	/* ISR status register */
453 454
} __packed;

Johannes Berg's avatar
Johannes Berg committed
455 456 457
#define ERROR_START_OFFSET  (1 * sizeof(u32))
#define ERROR_ELEM_SIZE     (7 * sizeof(u32))

458 459 460 461 462 463 464 465
static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm)
{
	struct iwl_trans *trans = mvm->trans;
	struct iwl_umac_error_event_table table;
	u32 base;

	base = mvm->umac_error_event_table;

466
	if (base < 0x800000) {
467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482
		IWL_ERR(mvm,
			"Not valid error log pointer 0x%08X for %s uCode\n",
			base,
			(mvm->cur_ucode == IWL_UCODE_INIT)
					? "Init" : "RT");
		return;
	}

	iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));

	if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
		IWL_ERR(trans, "Start IWL Error Log Dump:\n");
		IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
			mvm->status, table.valid);
	}

483
	IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
484 485 486 487 488 489 490
		desc_lookup(table.error_id));
	IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1);
	IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2);
	IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1);
	IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2);
	IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1);
	IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2);
491
	IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
492 493
	IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
	IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
494 495 496 497
	IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer);
	IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer);
	IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header);
	IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref);
498 499
}

500
static void iwl_mvm_dump_nic_error_log_old(struct iwl_mvm *mvm)
Johannes Berg's avatar
Johannes Berg committed
501 502
{
	struct iwl_trans *trans = mvm->trans;
503
	struct iwl_error_event_table_v1 table;
Johannes Berg's avatar
Johannes Berg committed
504 505 506 507 508 509 510 511 512 513 514
	u32 base;

	base = mvm->error_event_table;
	if (mvm->cur_ucode == IWL_UCODE_INIT) {
		if (!base)
			base = mvm->fw->init_errlog_ptr;
	} else {
		if (!base)
			base = mvm->fw->inst_errlog_ptr;
	}

515
	if (base < 0x800000) {
Johannes Berg's avatar
Johannes Berg committed
516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531
		IWL_ERR(mvm,
			"Not valid error log pointer 0x%08X for %s uCode\n",
			base,
			(mvm->cur_ucode == IWL_UCODE_INIT)
					? "Init" : "RT");
		return;
	}

	iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));

	if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
		IWL_ERR(trans, "Start IWL Error Log Dump:\n");
		IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
			mvm->status, table.valid);
	}

532 533
	/* Do not change this output - scripts rely on it */

534 535
	IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);

Johannes Berg's avatar
Johannes Berg committed
536 537 538 539
	trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
				      table.data1, table.data2, table.data3,
				      table.blink1, table.blink2, table.ilink1,
				      table.ilink2, table.bcon_time, table.gp1,
540
				      table.gp2, table.gp3, table.ucode_ver, 0,
Johannes Berg's avatar
Johannes Berg committed
541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575
				      table.hw_ver, table.brd_ver);
	IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
		desc_lookup(table.error_id));
	IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
	IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
	IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
	IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
	IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
	IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
	IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
	IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
	IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
	IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
	IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
	IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
	IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
	IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
	IWL_ERR(mvm, "0x%08X | uCode version\n", table.ucode_ver);
	IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
	IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
	IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
	IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
	IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
	IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
	IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
	IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
	IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
	IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
	IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
	IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
	IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
	IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
	IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
	IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
	IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);
576 577 578

	if (mvm->support_umac_log)
		iwl_mvm_dump_umac_error_log(mvm);
Johannes Berg's avatar
Johannes Berg committed
579 580
}

581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666
void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
{
	struct iwl_trans *trans = mvm->trans;
	struct iwl_error_event_table table;
	u32 base;

	if (!(mvm->fw->ucode_capa.api[0] & IWL_UCODE_TLV_API_NEW_VERSION)) {
		iwl_mvm_dump_nic_error_log_old(mvm);
		return;
	}

	base = mvm->error_event_table;
	if (mvm->cur_ucode == IWL_UCODE_INIT) {
		if (!base)
			base = mvm->fw->init_errlog_ptr;
	} else {
		if (!base)
			base = mvm->fw->inst_errlog_ptr;
	}

	if (base < 0x800000) {
		IWL_ERR(mvm,
			"Not valid error log pointer 0x%08X for %s uCode\n",
			base,
			(mvm->cur_ucode == IWL_UCODE_INIT)
					? "Init" : "RT");
		return;
	}

	iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));

	if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) {
		IWL_ERR(trans, "Start IWL Error Log Dump:\n");
		IWL_ERR(trans, "Status: 0x%08lX, count: %d\n",
			mvm->status, table.valid);
	}

	/* Do not change this output - scripts rely on it */

	IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version);

	trace_iwlwifi_dev_ucode_error(trans->dev, table.error_id, table.tsf_low,
				      table.data1, table.data2, table.data3,
				      table.blink1, table.blink2, table.ilink1,
				      table.ilink2, table.bcon_time, table.gp1,
				      table.gp2, table.gp3, table.major,
				      table.minor, table.hw_ver, table.brd_ver);
	IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
		desc_lookup(table.error_id));
	IWL_ERR(mvm, "0x%08X | uPc\n", table.pc);
	IWL_ERR(mvm, "0x%08X | branchlink1\n", table.blink1);
	IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2);
	IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1);
	IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2);
	IWL_ERR(mvm, "0x%08X | data1\n", table.data1);
	IWL_ERR(mvm, "0x%08X | data2\n", table.data2);
	IWL_ERR(mvm, "0x%08X | data3\n", table.data3);
	IWL_ERR(mvm, "0x%08X | beacon time\n", table.bcon_time);
	IWL_ERR(mvm, "0x%08X | tsf low\n", table.tsf_low);
	IWL_ERR(mvm, "0x%08X | tsf hi\n", table.tsf_hi);
	IWL_ERR(mvm, "0x%08X | time gp1\n", table.gp1);
	IWL_ERR(mvm, "0x%08X | time gp2\n", table.gp2);
	IWL_ERR(mvm, "0x%08X | time gp3\n", table.gp3);
	IWL_ERR(mvm, "0x%08X | uCode version major\n", table.major);
	IWL_ERR(mvm, "0x%08X | uCode version minor\n", table.minor);
	IWL_ERR(mvm, "0x%08X | hw version\n", table.hw_ver);
	IWL_ERR(mvm, "0x%08X | board version\n", table.brd_ver);
	IWL_ERR(mvm, "0x%08X | hcmd\n", table.hcmd);
	IWL_ERR(mvm, "0x%08X | isr0\n", table.isr0);
	IWL_ERR(mvm, "0x%08X | isr1\n", table.isr1);
	IWL_ERR(mvm, "0x%08X | isr2\n", table.isr2);
	IWL_ERR(mvm, "0x%08X | isr3\n", table.isr3);
	IWL_ERR(mvm, "0x%08X | isr4\n", table.isr4);
	IWL_ERR(mvm, "0x%08X | isr_pref\n", table.isr_pref);
	IWL_ERR(mvm, "0x%08X | wait_event\n", table.wait_event);
	IWL_ERR(mvm, "0x%08X | l2p_control\n", table.l2p_control);
	IWL_ERR(mvm, "0x%08X | l2p_duration\n", table.l2p_duration);
	IWL_ERR(mvm, "0x%08X | l2p_mhvalid\n", table.l2p_mhvalid);
	IWL_ERR(mvm, "0x%08X | l2p_addr_match\n", table.l2p_addr_match);
	IWL_ERR(mvm, "0x%08X | lmpm_pmg_sel\n", table.lmpm_pmg_sel);
	IWL_ERR(mvm, "0x%08X | timestamp\n", table.u_timestamp);
	IWL_ERR(mvm, "0x%08X | flow_handler\n", table.flow_handler);

	if (mvm->support_umac_log)
		iwl_mvm_dump_umac_error_log(mvm);
}
667
void iwl_mvm_enable_txq(struct iwl_mvm *mvm, int queue, u16 ssn,
668 669
			const struct iwl_trans_txq_scd_cfg *cfg,
			unsigned int wdg_timeout)
670
{
671 672 673 674 675 676 677 678 679 680 681 682
	struct iwl_scd_txq_cfg_cmd cmd = {
		.scd_queue = queue,
		.enable = 1,
		.window = cfg->frame_limit,
		.sta_id = cfg->sta_id,
		.ssn = cpu_to_le16(ssn),
		.tx_fifo = cfg->fifo,
		.aggregate = cfg->aggregate,
		.tid = cfg->tid,
	};

	if (!iwl_mvm_is_scd_cfg_supported(mvm)) {
683 684
		iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, cfg,
					 wdg_timeout);
685
		return;
686 687
	}

688
	iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout);
689 690
	WARN(iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd),
	     "Failed to configure queue %d on FIFO %d\n", queue, cfg->fifo);
691 692
}

693
void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, u8 flags)
694
{
695 696 697 698 699 700 701 702 703
	struct iwl_scd_txq_cfg_cmd cmd = {
		.scd_queue = queue,
		.enable = 0,
	};
	int ret;

	if (!iwl_mvm_is_scd_cfg_supported(mvm)) {
		iwl_trans_txq_disable(mvm->trans, queue, true);
		return;
704
	}
705 706 707 708 709 710 711

	iwl_trans_txq_disable(mvm->trans, queue, false);
	ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, flags,
				   sizeof(cmd), &cmd);
	if (ret)
		IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n",
			queue, ret);
712 713
}

Johannes Berg's avatar
Johannes Berg committed
714 715 716 717 718 719 720 721 722 723
/**
 * iwl_mvm_send_lq_cmd() - Send link quality command
 * @init: This command is sent as part of station initialization right
 *        after station has been added.
 *
 * The link quality command is sent as the last step of station creation.
 * This is the special case in which init is set and we call a callback in
 * this case to clear the state indicating that station creation is in
 * progress.
 */
724
int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
Johannes Berg's avatar
Johannes Berg committed
725 726 727 728
{
	struct iwl_host_cmd cmd = {
		.id = LQ_CMD,
		.len = { sizeof(struct iwl_lq_cmd), },
Emmanuel Grumbach's avatar
Emmanuel Grumbach committed
729
		.flags = init ? 0 : CMD_ASYNC,
Johannes Berg's avatar
Johannes Berg committed
730 731 732
		.data = { lq, },
	};

733
	if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT))
Johannes Berg's avatar
Johannes Berg committed
734 735 736 737
		return -EINVAL;

	return iwl_mvm_send_cmd(mvm, &cmd);
}
738 739 740 741 742 743 744 745 746 747 748 749 750 751

/**
 * iwl_mvm_update_smps - Get a requst to change the SMPS mode
 * @req_type: The part of the driver who call for a change.
 * @smps_requests: The request to change the SMPS mode.
 *
 * Get a requst to change the SMPS mode,
 * and change it according to all other requests in the driver.
 */
void 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)
{
	struct iwl_mvm_vif *mvmvif;
752
	enum ieee80211_smps_mode smps_mode;
753 754 755
	int i;

	lockdep_assert_held(&mvm->mutex);
756 757

	/* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
758
	if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
759 760
		return;

761 762 763 764 765
	if (vif->type == NL80211_IFTYPE_AP)
		smps_mode = IEEE80211_SMPS_OFF;
	else
		smps_mode = IEEE80211_SMPS_AUTOMATIC;

766 767 768 769 770 771 772 773 774 775 776 777 778
	mvmvif = iwl_mvm_vif_from_mac80211(vif);
	mvmvif->smps_requests[req_type] = smps_request;
	for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
		if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC) {
			smps_mode = IEEE80211_SMPS_STATIC;
			break;
		}
		if (mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
			smps_mode = IEEE80211_SMPS_DYNAMIC;
	}

	ieee80211_request_smps(vif, smps_mode);
}
779

780
int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
781
{
782 783 784
	struct iwl_statistics_cmd scmd = {
		.flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
	};
785 786 787 788 789 790 791 792 793 794 795 796 797 798 799
	struct iwl_host_cmd cmd = {
		.id = STATISTICS_CMD,
		.len[0] = sizeof(scmd),
		.data[0] = &scmd,
		.flags = CMD_WANT_SKB,
	};
	int ret;

	ret = iwl_mvm_send_cmd(mvm, &cmd);
	if (ret)
		return ret;

	iwl_mvm_handle_rx_statistics(mvm, cmd.resp_pkt);
	iwl_free_resp(&cmd);

800 801 802
	if (clear)
		iwl_mvm_accu_radio_stats(mvm);

803 804 805 806 807 808 809 810 811 812 813
	return 0;
}

void iwl_mvm_accu_radio_stats(struct iwl_mvm *mvm)
{
	mvm->accu_radio_stats.rx_time += mvm->radio_stats.rx_time;
	mvm->accu_radio_stats.tx_time += mvm->radio_stats.tx_time;
	mvm->accu_radio_stats.on_time_rf += mvm->radio_stats.on_time_rf;
	mvm->accu_radio_stats.on_time_scan += mvm->radio_stats.on_time_scan;
}

814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833
static void iwl_mvm_diversity_iter(void *_data, u8 *mac,
				   struct ieee80211_vif *vif)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
	bool *result = _data;
	int i;

	for (i = 0; i < NUM_IWL_MVM_SMPS_REQ; i++) {
		if (mvmvif->smps_requests[i] == IEEE80211_SMPS_STATIC ||
		    mvmvif->smps_requests[i] == IEEE80211_SMPS_DYNAMIC)
			*result = false;
	}
}

bool iwl_mvm_rx_diversity_allowed(struct iwl_mvm *mvm)
{
	bool result = true;

	lockdep_assert_held(&mvm->mutex);

834
	if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
835 836
		return false;

837
	if (mvm->cfg->rx_with_siso_diversity)
838 839 840 841 842 843 844 845 846
		return false;

	ieee80211_iterate_active_interfaces_atomic(
			mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
			iwl_mvm_diversity_iter, &result);

	return result;
}

847 848 849 850
int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
			       bool value)
{
	struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
851
	int res;
852 853 854

	lockdep_assert_held(&mvm->mutex);

855 856 857
	if (mvmvif->low_latency == value)
		return 0;

858 859
	mvmvif->low_latency = value;

860
	res = iwl_mvm_update_quotas(mvm, false, NULL);
861 862
	if (res)
		return res;
863 864 865

	iwl_mvm_bt_coex_vif_change(mvm);

866
	return iwl_mvm_power_update_mac(mvm);
867
}
868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886

static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
{
	bool *result = _data;

	if (iwl_mvm_vif_low_latency(iwl_mvm_vif_from_mac80211(vif)))
		*result = true;
}

bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
{
	bool result = false;

	ieee80211_iterate_active_interfaces_atomic(
			mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
			iwl_mvm_ll_iter, &result);

	return result;
}
887

888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923
struct iwl_bss_iter_data {
	struct ieee80211_vif *vif;
	bool error;
};

static void iwl_mvm_bss_iface_iterator(void *_data, u8 *mac,
				       struct ieee80211_vif *vif)
{
	struct iwl_bss_iter_data *data = _data;

	if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
		return;

	if (data->vif) {
		data->error = true;
		return;
	}

	data->vif = vif;
}

struct ieee80211_vif *iwl_mvm_get_bss_vif(struct iwl_mvm *mvm)
{
	struct iwl_bss_iter_data bss_iter_data = {};

	ieee80211_iterate_active_interfaces_atomic(
		mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
		iwl_mvm_bss_iface_iterator, &bss_iter_data);

	if (bss_iter_data.error) {
		IWL_ERR(mvm, "More than one managed interface active!\n");
		return ERR_PTR(-EINVAL);
	}

	return bss_iter_data.vif;
}