/******************************************************************************
*
* 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
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
* Copyright (C) 2015 - 2017 Intel Deutschland GmbH
* Copyright(c) 2018 Intel Corporation
*
* 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.
*
* The full GNU General Public License is included in this distribution
* in the file called COPYING.
*
* Contact Information:
* Intel Linux Wireless <linuxwifi@intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*
* BSD LICENSE
*
* Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved.
* Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH
* Copyright (C) 2015 - 2017 Intel Deutschland GmbH
* Copyright(c) 2018 Intel Corporation
* 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"
#include "iwl-prph.h"
#include "iwl-csr.h"
#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;
#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
if (WARN_ON(mvm->d3_test_active))
return -EIO;
#endif
/*
* 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);
if (!(cmd->flags & CMD_SEND_IN_IDLE))
iwl_mvm_ref(mvm, IWL_MVM_REF_SENDING_CMD);
}
ret = iwl_trans_send_cmd(mvm->trans, cmd);
if (!(cmd->flags & (CMD_ASYNC | CMD_SEND_IN_IDLE)))
iwl_mvm_unref(mvm, IWL_MVM_REF_SENDING_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, u32 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 success 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);
#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP)
if (WARN_ON(mvm->d3_test_active))
return -EIO;
#endif
/*
* 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;
cmd->flags |= CMD_WANT_SKB;
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;
resp_len = iwl_rx_packet_payload_len(pkt);
if (WARN_ON_ONCE(resp_len != sizeof(*resp))) {
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, u32 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 nl80211_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 == NL80211_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];
}
u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac)
{
static const u8 mac80211_ac_to_ucode_ac[] = {
AC_VO,
AC_VI,
AC_BE,
AC_BK
};
return mac80211_ac_to_ucode_ac[ac];
}
void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb)
{
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%016llX\n",
le64_to_cpu(err_resp->timestamp));
}
/*
* 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 */
if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */
return BIT(0);
return BIT(ffs(mask) - 1);
}
/*
* 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 < MAX_ANT_NUM; i++) {
ind = (ind + 1) % MAX_ANT_NUM;
if (valid & BIT(ind))
return ind;
}
WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid);
return last_idx;
}
#define FW_SYSASSERT_CPU_MASK 0xf0000000
static const struct {
const char *name;
u8 num;
} advanced_lookup[] = {
{ "NMI_INTERRUPT_WDG", 0x34 },
{ "SYSASSERT", 0x35 },
{ "UCODE_VERSION_MISMATCH", 0x37 },
{ "BAD_COMMAND", 0x38 },
{ "BAD_COMMAND", 0x39 },
{ "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_LMAC_FATAL", 0x70 },
{ "NMI_INTERRUPT_UMAC_FATAL", 0x71 },
{ "NMI_INTERRUPT_OTHER_LMAC_FATAL", 0x73 },
{ "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 & ~FW_SYSASSERT_CPU_MASK))
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!
*/
struct iwl_error_event_table_v1 {
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 */
} __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 trm_hw_status0; /* TRM HW status */
u32 trm_hw_status1; /* TRM HW status */
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 fw_rev_type; /* firmware revision type */
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 last_cmd_id; /* last HCMD id handled by the firmware */
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_3 */;
/*
* 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 */
u32 data3; /* error-specific data */
u32 umac_major;
u32 umac_minor;
u32 frame_pointer; /* core register 27*/
u32 stack_pointer; /* core register 28 */
u32 cmd_header; /* latest host cmd sent to UMAC */
u32 nic_isr_pref; /* ISR status register */
} __packed;
#define ERROR_START_OFFSET (1 * sizeof(u32))
#define ERROR_ELEM_SIZE (7 * sizeof(u32))
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 = mvm->trans->dbg.umac_error_event_table;
if (!mvm->support_umac_log &&
!(mvm->trans->dbg.error_event_table_tlv_status &
IWL_ERROR_EVENT_TABLE_UMAC))
return;
iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
if (table.valid)
mvm->fwrt.dump.umac_err_id = table.error_id;
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);
}
IWL_ERR(mvm, "0x%08X | %s\n", table.error_id,
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);
IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3);
IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major);
IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor);
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);
}
static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num)
{
struct iwl_trans *trans = mvm->trans;
struct iwl_error_event_table table;
u32 val, base = mvm->trans->dbg.lmac_error_event_table[lmac_num];
if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) {
if (!base)
base = mvm->fw->init_errlog_ptr;
} else {
if (!base)
base = mvm->fw->inst_errlog_ptr;
}
if (base < 0x400000) {
IWL_ERR(mvm,
"Not valid error log pointer 0x%08X for %s uCode\n",
base,
(mvm->fwrt.cur_fw_img == IWL_UCODE_INIT)
? "Init" : "RT");
return;
}
/* check if there is a HW error */
val = iwl_trans_read_mem32(trans, base);
if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) {
int err;
IWL_ERR(trans, "HW error, resetting before reading\n");
/* reset the device */
iwl_trans_sw_reset(trans);
err = iwl_finish_nic_init(trans);
if (err)
return;
}
iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table));
if (table.valid)
mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id;
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);
IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id,
desc_lookup(table.error_id));
IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0);
IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1);
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 | uCode revision type\n", table.fw_rev_type);
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 | last cmd Id\n", table.last_cmd_id);
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);
}
void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm)
{
if (!test_bit(STATUS_DEVICE_ENABLED, &mvm->trans->status)) {
IWL_ERR(mvm,
"DEVICE_ENABLED bit is not set. Aborting dump.\n");
return;
}
iwl_mvm_dump_lmac_error_log(mvm, 0);
if (mvm->trans->dbg.lmac_error_event_table[1])
iwl_mvm_dump_lmac_error_log(mvm, 1);
iwl_mvm_dump_umac_error_log(mvm);
iwl_fw_error_print_fseq_regs(&mvm->fwrt);
}
int iwl_mvm_reconfig_scd(struct iwl_mvm *mvm, int queue, int fifo, int sta_id,
int tid, int frame_limit, u16 ssn)
{
struct iwl_scd_txq_cfg_cmd cmd = {
.scd_queue = queue,
.action = SCD_CFG_ENABLE_QUEUE,
.window = frame_limit,
.sta_id = sta_id,
.ssn = cpu_to_le16(ssn),
.tx_fifo = fifo,
.aggregate = (queue >= IWL_MVM_DQA_MIN_DATA_QUEUE ||
queue == IWL_MVM_DQA_BSS_CLIENT_QUEUE),
.tid = tid,
};
int ret;
if (WARN_ON(iwl_mvm_has_new_tx_api(mvm)))
return -EINVAL;
if (WARN(mvm->queue_info[queue].tid_bitmap == 0,
"Trying to reconfig unallocated queue %d\n", queue))
return -ENXIO;
IWL_DEBUG_TX_QUEUES(mvm, "Reconfig SCD for TXQ #%d\n", queue);
ret = iwl_mvm_send_cmd_pdu(mvm, SCD_QUEUE_CFG, 0, sizeof(cmd), &cmd);
WARN_ONCE(ret, "Failed to re-configure queue %d on FIFO %d, ret=%d\n",
queue, fifo, ret);
return ret;
}
/**
* iwl_mvm_send_lq_cmd() - Send link quality command
* @sync: This command can be sent synchronously.
*
* 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.
*/
int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq)
{
struct iwl_host_cmd cmd = {
.id = LQ_CMD,
.len = { sizeof(struct iwl_lq_cmd), },
.flags = CMD_ASYNC,
.data = { lq, },
};
if (WARN_ON(lq->sta_id == IWL_MVM_INVALID_STA ||
iwl_mvm_has_tlc_offload(mvm)))
return -EINVAL;
return iwl_mvm_send_cmd(mvm, &cmd);
}
/**
* iwl_mvm_update_smps - Get a request 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;
enum ieee80211_smps_mode smps_mode;
int i;
lockdep_assert_held(&mvm->mutex);
/* SMPS is irrelevant for NICs that don't have at least 2 RX antenna */
if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
return;
if (vif->type == NL80211_IFTYPE_AP)
smps_mode = IEEE80211_SMPS_OFF;
else
smps_mode = IEEE80211_SMPS_AUTOMATIC;
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);
}
int iwl_mvm_request_statistics(struct iwl_mvm *mvm, bool clear)
{
struct iwl_statistics_cmd scmd = {
.flags = clear ? cpu_to_le32(IWL_STATISTICS_FLG_CLEAR) : 0,
};
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);
if (clear)
iwl_mvm_accu_radio_stats(mvm);
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;
}
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);
if (num_of_ant(iwl_mvm_get_valid_rx_ant(mvm)) == 1)
return false;
if (mvm->cfg->rx_with_siso_diversity)
return false;
ieee80211_iterate_active_interfaces_atomic(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_diversity_iter, &result);
return result;
}
void iwl_mvm_send_low_latency_cmd(struct iwl_mvm *mvm,
bool low_latency, u16 mac_id)
{
struct iwl_mac_low_latency_cmd cmd = {
.mac_id = cpu_to_le32(mac_id)
};
if (!fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_DYNAMIC_QUOTA))
return;
if (low_latency) {
/* currently we don't care about the direction */
cmd.low_latency_rx = 1;
cmd.low_latency_tx = 1;
}
if (iwl_mvm_send_cmd_pdu(mvm, iwl_cmd_id(LOW_LATENCY_CMD,
MAC_CONF_GROUP, 0),
0, sizeof(cmd), &cmd))
IWL_ERR(mvm, "Failed to send low latency command\n");
}
int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
bool low_latency,
enum iwl_mvm_low_latency_cause cause)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int res;
bool prev;
lockdep_assert_held(&mvm->mutex);
prev = iwl_mvm_vif_low_latency(mvmvif);
iwl_mvm_vif_set_low_latency(mvmvif, low_latency, cause);
low_latency = iwl_mvm_vif_low_latency(mvmvif);
if (low_latency == prev)
return 0;
iwl_mvm_send_low_latency_cmd(mvm, low_latency, mvmvif->id);
res = iwl_mvm_update_quotas(mvm, false, NULL);
if (res)
return res;
iwl_mvm_bt_coex_vif_change(mvm);
return iwl_mvm_power_update_mac(mvm);
}
struct iwl_mvm_low_latency_iter {
bool result;
bool result_per_band[NUM_NL80211_BANDS];
};
static void iwl_mvm_ll_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
{
struct iwl_mvm_low_latency_iter *result = _data;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
enum nl80211_band band;
if (iwl_mvm_vif_low_latency(mvmvif)) {
result->result = true;
if (!mvmvif->phy_ctxt)
return;
band = mvmvif->phy_ctxt->channel->band;
result->result_per_band[band] = true;
}
}
bool iwl_mvm_low_latency(struct iwl_mvm *mvm)
{
struct iwl_mvm_low_latency_iter data = {};
ieee80211_iterate_active_interfaces_atomic(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_ll_iter, &data);
return data.result;
}
bool iwl_mvm_low_latency_band(struct iwl_mvm *mvm, enum nl80211_band band)
{
struct iwl_mvm_low_latency_iter data = {};
ieee80211_iterate_active_interfaces_atomic(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_ll_iter, &data);
return data.result_per_band[band];
}
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;
}
struct iwl_sta_iter_data {
bool assoc;
};
static void iwl_mvm_sta_iface_iterator(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_sta_iter_data *data = _data;
if (vif->type != NL80211_IFTYPE_STATION)
return;
if (vif->bss_conf.assoc)
data->assoc = true;
}
bool iwl_mvm_is_vif_assoc(struct iwl_mvm *mvm)
{
struct iwl_sta_iter_data data = {
.assoc = false,
};
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_sta_iface_iterator,
&data);
return data.assoc;
}
unsigned int iwl_mvm_get_wd_timeout(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
bool tdls, bool cmd_q)
{
struct iwl_fw_dbg_trigger_tlv *trigger;
struct iwl_fw_dbg_trigger_txq_timer *txq_timer;
unsigned int default_timeout =
cmd_q ? IWL_DEF_WD_TIMEOUT : mvm->cfg->base_params->wd_timeout;
if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS)) {
/*
* We can't know when the station is asleep or awake, so we
* must disable the queue hang detection.
*/
if (fw_has_capa(&mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_STA_PM_NOTIF) &&
vif && vif->type == NL80211_IFTYPE_AP)
return IWL_WATCHDOG_DISABLED;
return iwlmvm_mod_params.tfd_q_hang_detect ?
default_timeout : IWL_WATCHDOG_DISABLED;
}
trigger = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_TXQ_TIMERS);
txq_timer = (void *)trigger->data;
if (tdls)
return le32_to_cpu(txq_timer->tdls);
if (cmd_q)
return le32_to_cpu(txq_timer->command_queue);
if (WARN_ON(!vif))
return default_timeout;
switch (ieee80211_vif_type_p2p(vif)) {
case NL80211_IFTYPE_ADHOC:
return le32_to_cpu(txq_timer->ibss);
case NL80211_IFTYPE_STATION:
return le32_to_cpu(txq_timer->bss);
case NL80211_IFTYPE_AP:
return le32_to_cpu(txq_timer->softap);
case NL80211_IFTYPE_P2P_CLIENT:
return le32_to_cpu(txq_timer->p2p_client);
case NL80211_IFTYPE_P2P_GO:
return le32_to_cpu(txq_timer->p2p_go);
case NL80211_IFTYPE_P2P_DEVICE:
return le32_to_cpu(txq_timer->p2p_device);
case NL80211_IFTYPE_MONITOR:
return default_timeout;
default:
WARN_ON(1);
return mvm->cfg->base_params->wd_timeout;
}
}
void iwl_mvm_connection_loss(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
const char *errmsg)
{
struct iwl_fw_dbg_trigger_tlv *trig;
struct iwl_fw_dbg_trigger_mlme *trig_mlme;
trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
FW_DBG_TRIGGER_MLME);
if (!trig)
goto out;
trig_mlme = (void *)trig->data;
if (trig_mlme->stop_connection_loss &&
--trig_mlme->stop_connection_loss)
goto out;
iwl_fw_dbg_collect_trig(&mvm->fwrt, trig, "%s", errmsg);
out:
ieee80211_connection_loss(vif);
}
void iwl_mvm_event_frame_timeout_callback(struct iwl_mvm *mvm,
struct ieee80211_vif *vif,
const struct ieee80211_sta *sta,
u16 tid)
{
struct iwl_fw_dbg_trigger_tlv *trig;
struct iwl_fw_dbg_trigger_ba *ba_trig;
trig = iwl_fw_dbg_trigger_on(&mvm->fwrt, ieee80211_vif_to_wdev(vif),
FW_DBG_TRIGGER_BA);
if (!trig)
return;
ba_trig = (void *)trig->data;
if (!(le16_to_cpu(ba_trig->frame_timeout) & BIT(tid)))
return;
iwl_fw_dbg_collect_trig(&mvm->fwrt, trig,
"Frame from %pM timed out, tid %d",
sta->addr, tid);
}
u8 iwl_mvm_tcm_load_percentage(u32 airtime, u32 elapsed)
{
if (!elapsed)
return 0;
return (100 * airtime / elapsed) / USEC_PER_MSEC;
}
static enum iwl_mvm_traffic_load
iwl_mvm_tcm_load(struct iwl_mvm *mvm, u32 airtime, unsigned long elapsed)
{
u8 load = iwl_mvm_tcm_load_percentage(airtime, elapsed);
if (load > IWL_MVM_TCM_LOAD_HIGH_THRESH)
return IWL_MVM_TRAFFIC_HIGH;
if (load > IWL_MVM_TCM_LOAD_MEDIUM_THRESH)
return IWL_MVM_TRAFFIC_MEDIUM;
return IWL_MVM_TRAFFIC_LOW;
}
struct iwl_mvm_tcm_iter_data {
struct iwl_mvm *mvm;
bool any_sent;
};
static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif)
{
struct iwl_mvm_tcm_iter_data *data = _data;
struct iwl_mvm *mvm = data->mvm;
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
bool low_latency, prev = mvmvif->low_latency & LOW_LATENCY_TRAFFIC;
if (mvmvif->id >= NUM_MAC_INDEX_DRIVER)
return;
low_latency = mvm->tcm.result.low_latency[mvmvif->id];
if (!mvm->tcm.result.change[mvmvif->id] &&
prev == low_latency) {
iwl_mvm_update_quotas(mvm, false, NULL);
return;
}
if (prev != low_latency) {
/* this sends traffic load and updates quota as well */
iwl_mvm_update_low_latency(mvm, vif, low_latency,
LOW_LATENCY_TRAFFIC);
} else {
iwl_mvm_update_quotas(mvm, false, NULL);
}
data->any_sent = true;
}
static void iwl_mvm_tcm_results(struct iwl_mvm *mvm)
{
struct iwl_mvm_tcm_iter_data data = {
.mvm = mvm,
.any_sent = false,
};
mutex_lock(&mvm->mutex);
ieee80211_iterate_active_interfaces(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_tcm_iter, &data);
if (fw_has_capa(&mvm->fw->ucode_capa, IWL_UCODE_TLV_CAPA_UMAC_SCAN))
iwl_mvm_config_scan(mvm);
mutex_unlock(&mvm->mutex);
}
static void iwl_mvm_tcm_uapsd_nonagg_detected_wk(struct work_struct *wk)
{
struct iwl_mvm *mvm;
struct iwl_mvm_vif *mvmvif;
struct ieee80211_vif *vif;
mvmvif = container_of(wk, struct iwl_mvm_vif,
uapsd_nonagg_detected_wk.work);
vif = container_of((void *)mvmvif, struct ieee80211_vif, drv_priv);
mvm = mvmvif->mvm;
if (mvm->tcm.data[mvmvif->id].opened_rx_ba_sessions)
return;
/* remember that this AP is broken */
memcpy(mvm->uapsd_noagg_bssids[mvm->uapsd_noagg_bssid_write_idx].addr,
vif->bss_conf.bssid, ETH_ALEN);
mvm->uapsd_noagg_bssid_write_idx++;
if (mvm->uapsd_noagg_bssid_write_idx >= IWL_MVM_UAPSD_NOAGG_LIST_LEN)
mvm->uapsd_noagg_bssid_write_idx = 0;
iwl_mvm_connection_loss(mvm, vif,
"AP isn't using AMPDU with uAPSD enabled");
}
static void iwl_mvm_uapsd_agg_disconnect(struct iwl_mvm *mvm,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
if (vif->type != NL80211_IFTYPE_STATION)
return;
if (!vif->bss_conf.assoc)
return;
if (!mvmvif->queue_params[IEEE80211_AC_VO].uapsd &&
!mvmvif->queue_params[IEEE80211_AC_VI].uapsd &&
!mvmvif->queue_params[IEEE80211_AC_BE].uapsd &&
!mvmvif->queue_params[IEEE80211_AC_BK].uapsd)
return;
if (mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected)
return;
mvm->tcm.data[mvmvif->id].uapsd_nonagg_detect.detected = true;
IWL_INFO(mvm,
"detected AP should do aggregation but isn't, likely due to U-APSD\n");
schedule_delayed_work(&mvmvif->uapsd_nonagg_detected_wk, 15 * HZ);
}
static void iwl_mvm_check_uapsd_agg_expected_tpt(struct iwl_mvm *mvm,
unsigned int elapsed,
int mac)
{
u64 bytes = mvm->tcm.data[mac].uapsd_nonagg_detect.rx_bytes;
u64 tpt;
unsigned long rate;
struct ieee80211_vif *vif;
rate = ewma_rate_read(&mvm->tcm.data[mac].uapsd_nonagg_detect.rate);
if (!rate || mvm->tcm.data[mac].opened_rx_ba_sessions ||
mvm->tcm.data[mac].uapsd_nonagg_detect.detected)
return;
if (iwl_mvm_has_new_rx_api(mvm)) {
tpt = 8 * bytes; /* kbps */
do_div(tpt, elapsed);
rate *= 1000; /* kbps */
if (tpt < 22 * rate / 100)
return;
} else {
/*
* the rate here is actually the threshold, in 100Kbps units,
* so do the needed conversion from bytes to 100Kbps:
* 100kb = bits / (100 * 1000),
* 100kbps = 100kb / (msecs / 1000) ==
* (bits / (100 * 1000)) / (msecs / 1000) ==
* bits / (100 * msecs)
*/
tpt = (8 * bytes);
do_div(tpt, elapsed * 100);
if (tpt < rate)
return;
}
rcu_read_lock();
vif = rcu_dereference(mvm->vif_id_to_mac[mac]);
if (vif)
iwl_mvm_uapsd_agg_disconnect(mvm, vif);
rcu_read_unlock();
}
static void iwl_mvm_tcm_iterator(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
u32 *band = _data;
if (!mvmvif->phy_ctxt)
return;
band[mvmvif->id] = mvmvif->phy_ctxt->channel->band;
}
static unsigned long iwl_mvm_calc_tcm_stats(struct iwl_mvm *mvm,
unsigned long ts,
bool handle_uapsd)
{
unsigned int elapsed = jiffies_to_msecs(ts - mvm->tcm.ts);
unsigned int uapsd_elapsed =
jiffies_to_msecs(ts - mvm->tcm.uapsd_nonagg_ts);
u32 total_airtime = 0;
u32 band_airtime[NUM_NL80211_BANDS] = {0};
u32 band[NUM_MAC_INDEX_DRIVER] = {0};
int ac, mac, i;
bool low_latency = false;
enum iwl_mvm_traffic_load load, band_load;
bool handle_ll = time_after(ts, mvm->tcm.ll_ts + MVM_LL_PERIOD);
if (handle_ll)
mvm->tcm.ll_ts = ts;
if (handle_uapsd)
mvm->tcm.uapsd_nonagg_ts = ts;
mvm->tcm.result.elapsed = elapsed;
ieee80211_iterate_active_interfaces_atomic(mvm->hw,
IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_tcm_iterator,
&band);
for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
u32 vo_vi_pkts = 0;
u32 airtime = mdata->rx.airtime + mdata->tx.airtime;
total_airtime += airtime;
band_airtime[band[mac]] += airtime;
load = iwl_mvm_tcm_load(mvm, airtime, elapsed);
mvm->tcm.result.change[mac] = load != mvm->tcm.result.load[mac];
mvm->tcm.result.load[mac] = load;
mvm->tcm.result.airtime[mac] = airtime;
for (ac = IEEE80211_AC_VO; ac <= IEEE80211_AC_VI; ac++)
vo_vi_pkts += mdata->rx.pkts[ac] +
mdata->tx.pkts[ac];
/* enable immediately with enough packets but defer disabling */
if (vo_vi_pkts > IWL_MVM_TCM_LOWLAT_ENABLE_THRESH)
mvm->tcm.result.low_latency[mac] = true;
else if (handle_ll)
mvm->tcm.result.low_latency[mac] = false;
if (handle_ll) {
/* clear old data */
memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
}
low_latency |= mvm->tcm.result.low_latency[mac];
if (!mvm->tcm.result.low_latency[mac] && handle_uapsd)
iwl_mvm_check_uapsd_agg_expected_tpt(mvm, uapsd_elapsed,
mac);
/* clear old data */
if (handle_uapsd)
mdata->uapsd_nonagg_detect.rx_bytes = 0;
memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
}
load = iwl_mvm_tcm_load(mvm, total_airtime, elapsed);
mvm->tcm.result.global_change = load != mvm->tcm.result.global_load;
mvm->tcm.result.global_load = load;
for (i = 0; i < NUM_NL80211_BANDS; i++) {
band_load = iwl_mvm_tcm_load(mvm, band_airtime[i], elapsed);
mvm->tcm.result.band_load[i] = band_load;
}
/*
* If the current load isn't low we need to force re-evaluation
* in the TCM period, so that we can return to low load if there
* was no traffic at all (and thus iwl_mvm_recalc_tcm didn't get
* triggered by traffic).
*/
if (load != IWL_MVM_TRAFFIC_LOW)
return MVM_TCM_PERIOD;
/*
* If low-latency is active we need to force re-evaluation after
* (the longer) MVM_LL_PERIOD, so that we can disable low-latency
* when there's no traffic at all.
*/
if (low_latency)
return MVM_LL_PERIOD;
/*
* Otherwise, we don't need to run the work struct because we're
* in the default "idle" state - traffic indication is low (which
* also covers the "no traffic" case) and low-latency is disabled
* so there's no state that may need to be disabled when there's
* no traffic at all.
*
* Note that this has no impact on the regular scheduling of the
* updates triggered by traffic - those happen whenever one of the
* two timeouts expire (if there's traffic at all.)
*/
return 0;
}
void iwl_mvm_recalc_tcm(struct iwl_mvm *mvm)
{
unsigned long ts = jiffies;
bool handle_uapsd =
time_after(ts, mvm->tcm.uapsd_nonagg_ts +
msecs_to_jiffies(IWL_MVM_UAPSD_NONAGG_PERIOD));
spin_lock(&mvm->tcm.lock);
if (mvm->tcm.paused || !time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
spin_unlock(&mvm->tcm.lock);
return;
}
spin_unlock(&mvm->tcm.lock);
if (handle_uapsd && iwl_mvm_has_new_rx_api(mvm)) {
mutex_lock(&mvm->mutex);
if (iwl_mvm_request_statistics(mvm, true))
handle_uapsd = false;
mutex_unlock(&mvm->mutex);
}
spin_lock(&mvm->tcm.lock);
/* re-check if somebody else won the recheck race */
if (!mvm->tcm.paused && time_after(ts, mvm->tcm.ts + MVM_TCM_PERIOD)) {
/* calculate statistics */
unsigned long work_delay = iwl_mvm_calc_tcm_stats(mvm, ts,
handle_uapsd);
/* the memset needs to be visible before the timestamp */
smp_mb();
mvm->tcm.ts = ts;
if (work_delay)
schedule_delayed_work(&mvm->tcm.work, work_delay);
}
spin_unlock(&mvm->tcm.lock);
iwl_mvm_tcm_results(mvm);
}
void iwl_mvm_tcm_work(struct work_struct *work)
{
struct delayed_work *delayed_work = to_delayed_work(work);
struct iwl_mvm *mvm = container_of(delayed_work, struct iwl_mvm,
tcm.work);
iwl_mvm_recalc_tcm(mvm);
}
void iwl_mvm_pause_tcm(struct iwl_mvm *mvm, bool with_cancel)
{
spin_lock_bh(&mvm->tcm.lock);
mvm->tcm.paused = true;
spin_unlock_bh(&mvm->tcm.lock);
if (with_cancel)
cancel_delayed_work_sync(&mvm->tcm.work);
}
void iwl_mvm_resume_tcm(struct iwl_mvm *mvm)
{
int mac;
bool low_latency = false;
spin_lock_bh(&mvm->tcm.lock);
mvm->tcm.ts = jiffies;
mvm->tcm.ll_ts = jiffies;
for (mac = 0; mac < NUM_MAC_INDEX_DRIVER; mac++) {
struct iwl_mvm_tcm_mac *mdata = &mvm->tcm.data[mac];
memset(&mdata->rx.pkts, 0, sizeof(mdata->rx.pkts));
memset(&mdata->tx.pkts, 0, sizeof(mdata->tx.pkts));
memset(&mdata->rx.airtime, 0, sizeof(mdata->rx.airtime));
memset(&mdata->tx.airtime, 0, sizeof(mdata->tx.airtime));
if (mvm->tcm.result.low_latency[mac])
low_latency = true;
}
/* The TCM data needs to be reset before "paused" flag changes */
smp_mb();
mvm->tcm.paused = false;
/*
* if the current load is not low or low latency is active, force
* re-evaluation to cover the case of no traffic.
*/
if (mvm->tcm.result.global_load > IWL_MVM_TRAFFIC_LOW)
schedule_delayed_work(&mvm->tcm.work, MVM_TCM_PERIOD);
else if (low_latency)
schedule_delayed_work(&mvm->tcm.work, MVM_LL_PERIOD);
spin_unlock_bh(&mvm->tcm.lock);
}
void iwl_mvm_tcm_add_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
INIT_DELAYED_WORK(&mvmvif->uapsd_nonagg_detected_wk,
iwl_mvm_tcm_uapsd_nonagg_detected_wk);
}
void iwl_mvm_tcm_rm_vif(struct iwl_mvm *mvm, struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
cancel_delayed_work_sync(&mvmvif->uapsd_nonagg_detected_wk);
}
u32 iwl_mvm_get_systime(struct iwl_mvm *mvm)
{
u32 reg_addr = DEVICE_SYSTEM_TIME_REG;
if (mvm->trans->cfg->device_family >= IWL_DEVICE_FAMILY_22000 &&
mvm->trans->cfg->gp2_reg_addr)
reg_addr = mvm->trans->cfg->gp2_reg_addr;
return iwl_read_prph(mvm->trans, reg_addr);
}
void iwl_mvm_get_sync_time(struct iwl_mvm *mvm, u32 *gp2, u64 *boottime)
{
bool ps_disabled;
lockdep_assert_held(&mvm->mutex);
/* Disable power save when reading GP2 */
ps_disabled = mvm->ps_disabled;
if (!ps_disabled) {
mvm->ps_disabled = true;
iwl_mvm_power_update_device(mvm);
}
*gp2 = iwl_mvm_get_systime(mvm);
*boottime = ktime_get_boottime_ns();
if (!ps_disabled) {
mvm->ps_disabled = ps_disabled;
iwl_mvm_power_update_device(mvm);
}
}
