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tegrakernel/kernel/kernel-4.9/drivers/net/wireless/intel/iwlwifi/mvm/utils.c

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/******************************************************************************
*
* 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 Intel Deutschland GmbH
*
* 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
* 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
* 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 "fw-dbg.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;
/* Can happen if RFKILL is asserted */
if (!pkt) {
ret = 0;
goto out_free_resp;
}
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];
}
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%16llX\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 < 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;
}
static const struct {
const char *name;
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!
*/
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;
base = mvm->umac_error_event_table;
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);
}
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);
}
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;
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 < 0x400000) {
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.blink2, table.ilink1,
table.ilink2, table.bcon_time, table.gp1,
table.gp2, table.fw_rev_type, 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 | 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);
if (mvm->support_umac_log)
iwl_mvm_dump_umac_error_log(mvm);
}
int iwl_mvm_find_free_queue(struct iwl_mvm *mvm, u8 sta_id, u8 minq, u8 maxq)
{
int i;
lockdep_assert_held(&mvm->queue_info_lock);
/* Start by looking for a free queue */
for (i = minq; i <= maxq; i++)
if (mvm->queue_info[i].hw_queue_refcount == 0 &&
mvm->queue_info[i].status == IWL_MVM_QUEUE_FREE)
return i;
/*
* If no free queue found - settle for an inactive one to reconfigure
* Make sure that the inactive queue either already belongs to this STA,
* or that if it belongs to another one - it isn't the reserved queue
*/
for (i = minq; i <= maxq; i++)
if (mvm->queue_info[i].status == IWL_MVM_QUEUE_INACTIVE &&
(sta_id == mvm->queue_info[i].ra_sta_id ||
!mvm->queue_info[i].reserved))
return i;
return -ENOSPC;
}
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;
spin_lock_bh(&mvm->queue_info_lock);
if (WARN(mvm->queue_info[queue].hw_queue_refcount == 0,
"Trying to reconfig unallocated queue %d\n", queue)) {
spin_unlock_bh(&mvm->queue_info_lock);
return -ENXIO;
}
spin_unlock_bh(&mvm->queue_info_lock);
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;
}
void 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)
{
bool enable_queue = true;
spin_lock_bh(&mvm->queue_info_lock);
/* Make sure this TID isn't already enabled */
if (mvm->queue_info[queue].tid_bitmap & BIT(cfg->tid)) {
spin_unlock_bh(&mvm->queue_info_lock);
IWL_ERR(mvm, "Trying to enable TXQ with existing TID %d\n",
cfg->tid);
return;
}
/* Update mappings and refcounts */
if (mvm->queue_info[queue].hw_queue_refcount > 0)
enable_queue = false;
mvm->queue_info[queue].hw_queue_to_mac80211 |= BIT(mac80211_queue);
mvm->queue_info[queue].hw_queue_refcount++;
mvm->queue_info[queue].tid_bitmap |= BIT(cfg->tid);
mvm->queue_info[queue].ra_sta_id = cfg->sta_id;
if (enable_queue) {
if (cfg->tid != IWL_MAX_TID_COUNT)
mvm->queue_info[queue].mac80211_ac =
tid_to_mac80211_ac[cfg->tid];
else
mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO;
mvm->queue_info[queue].txq_tid = cfg->tid;
}
IWL_DEBUG_TX_QUEUES(mvm,
"Enabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
queue, mvm->queue_info[queue].hw_queue_refcount,
mvm->queue_info[queue].hw_queue_to_mac80211);
spin_unlock_bh(&mvm->queue_info_lock);
/* Send the enabling command if we need to */
if (enable_queue) {
struct iwl_scd_txq_cfg_cmd cmd = {
.scd_queue = queue,
.action = SCD_CFG_ENABLE_QUEUE,
.window = cfg->frame_limit,
.sta_id = cfg->sta_id,
.ssn = cpu_to_le16(ssn),
.tx_fifo = cfg->fifo,
.aggregate = cfg->aggregate,
.tid = cfg->tid,
};
/* Set sta_id in the command, if it exists */
if (iwl_mvm_is_dqa_supported(mvm))
cmd.sta_id = cfg->sta_id;
iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL,
wdg_timeout);
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);
}
}
void iwl_mvm_disable_txq(struct iwl_mvm *mvm, int queue, int mac80211_queue,
u8 tid, u8 flags)
{
struct iwl_scd_txq_cfg_cmd cmd = {
.scd_queue = queue,
.action = SCD_CFG_DISABLE_QUEUE,
};
bool remove_mac_queue = true;
int ret;
spin_lock_bh(&mvm->queue_info_lock);
if (WARN_ON(mvm->queue_info[queue].hw_queue_refcount == 0)) {
spin_unlock_bh(&mvm->queue_info_lock);
return;
}
mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
/*
* If there is another TID with the same AC - don't remove the MAC queue
* from the mapping
*/
if (tid < IWL_MAX_TID_COUNT) {
unsigned long tid_bitmap =
mvm->queue_info[queue].tid_bitmap;
int ac = tid_to_mac80211_ac[tid];
int i;
for_each_set_bit(i, &tid_bitmap, IWL_MAX_TID_COUNT) {
if (tid_to_mac80211_ac[i] == ac)
remove_mac_queue = false;
}
}
if (remove_mac_queue)
mvm->queue_info[queue].hw_queue_to_mac80211 &=
~BIT(mac80211_queue);
mvm->queue_info[queue].hw_queue_refcount--;
cmd.action = mvm->queue_info[queue].hw_queue_refcount ?
SCD_CFG_ENABLE_QUEUE : SCD_CFG_DISABLE_QUEUE;
if (cmd.action == SCD_CFG_DISABLE_QUEUE)
mvm->queue_info[queue].status = IWL_MVM_QUEUE_FREE;
IWL_DEBUG_TX_QUEUES(mvm,
"Disabling TXQ #%d refcount=%d (mac80211 map:0x%x)\n",
queue,
mvm->queue_info[queue].hw_queue_refcount,
mvm->queue_info[queue].hw_queue_to_mac80211);
/* If the queue is still enabled - nothing left to do in this func */
if (cmd.action == SCD_CFG_ENABLE_QUEUE) {
spin_unlock_bh(&mvm->queue_info_lock);
return;
}
cmd.sta_id = mvm->queue_info[queue].ra_sta_id;
cmd.tid = mvm->queue_info[queue].txq_tid;
/* Make sure queue info is correct even though we overwrite it */
WARN(mvm->queue_info[queue].hw_queue_refcount ||
mvm->queue_info[queue].tid_bitmap ||
mvm->queue_info[queue].hw_queue_to_mac80211,
"TXQ #%d info out-of-sync - refcount=%d, mac map=0x%x, tid=0x%x\n",
queue, mvm->queue_info[queue].hw_queue_refcount,
mvm->queue_info[queue].hw_queue_to_mac80211,
mvm->queue_info[queue].tid_bitmap);
/* If we are here - the queue is freed and we can zero out these vals */
mvm->queue_info[queue].hw_queue_refcount = 0;
mvm->queue_info[queue].tid_bitmap = 0;
mvm->queue_info[queue].hw_queue_to_mac80211 = 0;
/* Regardless if this is a reserved TXQ for a STA - mark it as false */
mvm->queue_info[queue].reserved = false;
spin_unlock_bh(&mvm->queue_info_lock);
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);
}
/**
* 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.
*/
int iwl_mvm_send_lq_cmd(struct iwl_mvm *mvm, struct iwl_lq_cmd *lq, bool init)
{
struct iwl_host_cmd cmd = {
.id = LQ_CMD,
.len = { sizeof(struct iwl_lq_cmd), },
.flags = init ? 0 : CMD_ASYNC,
.data = { lq, },
};
if (WARN_ON(lq->sta_id == IWL_MVM_STATION_COUNT))
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;
}
int iwl_mvm_update_low_latency(struct iwl_mvm *mvm, struct ieee80211_vif *vif,
bool prev)
{
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif);
int res;
lockdep_assert_held(&mvm->mutex);
if (iwl_mvm_vif_low_latency(mvmvif) == prev)
return 0;
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);
}
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;
}
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;
}
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))
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;
if (!iwl_fw_dbg_trigger_enabled(mvm->fw, FW_DBG_TRIGGER_MLME))
goto out;
trig = iwl_fw_dbg_get_trigger(mvm->fw, FW_DBG_TRIGGER_MLME);
trig_mlme = (void *)trig->data;
if (!iwl_fw_dbg_trigger_check_stop(mvm, vif, trig))
goto out;
if (trig_mlme->stop_connection_loss &&
--trig_mlme->stop_connection_loss)
goto out;
iwl_mvm_fw_dbg_collect_trig(mvm, trig, "%s", errmsg);
out:
ieee80211_connection_loss(vif);
}
/*
* Remove inactive TIDs of a given queue.
* If all queue TIDs are inactive - mark the queue as inactive
* If only some the queue TIDs are inactive - unmap them from the queue
*/
static void iwl_mvm_remove_inactive_tids(struct iwl_mvm *mvm,
struct iwl_mvm_sta *mvmsta, int queue,
unsigned long tid_bitmap)
{
int tid;
lockdep_assert_held(&mvmsta->lock);
lockdep_assert_held(&mvm->queue_info_lock);
/* Go over all non-active TIDs, incl. IWL_MAX_TID_COUNT (for mgmt) */
for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
/* If some TFDs are still queued - don't mark TID as inactive */
if (iwl_mvm_tid_queued(&mvmsta->tid_data[tid]))
tid_bitmap &= ~BIT(tid);
}
/* If all TIDs in the queue are inactive - mark queue as inactive. */
if (tid_bitmap == mvm->queue_info[queue].tid_bitmap) {
mvm->queue_info[queue].status = IWL_MVM_QUEUE_INACTIVE;
for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1)
mvmsta->tid_data[tid].is_tid_active = false;
IWL_DEBUG_TX_QUEUES(mvm, "Queue %d marked as inactive\n",
queue);
return;
}
/*
* If we are here, this is a shared queue and not all TIDs timed-out.
* Remove the ones that did.
*/
for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
int mac_queue = mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]];
mvmsta->tid_data[tid].txq_id = IEEE80211_INVAL_HW_QUEUE;
mvm->queue_info[queue].hw_queue_to_mac80211 &= ~BIT(mac_queue);
mvm->queue_info[queue].hw_queue_refcount--;
mvm->queue_info[queue].tid_bitmap &= ~BIT(tid);
mvmsta->tid_data[tid].is_tid_active = false;
IWL_DEBUG_TX_QUEUES(mvm,
"Removing inactive TID %d from shared Q:%d\n",
tid, queue);
}
IWL_DEBUG_TX_QUEUES(mvm,
"TXQ #%d left with tid bitmap 0x%x\n", queue,
mvm->queue_info[queue].tid_bitmap);
/*
* There may be different TIDs with the same mac queues, so make
* sure all TIDs have existing corresponding mac queues enabled
*/
tid_bitmap = mvm->queue_info[queue].tid_bitmap;
for_each_set_bit(tid, &tid_bitmap, IWL_MAX_TID_COUNT + 1) {
mvm->queue_info[queue].hw_queue_to_mac80211 |=
BIT(mvmsta->vif->hw_queue[tid_to_mac80211_ac[tid]]);
}
/* If the queue is marked as shared - "unshare" it */
if (mvm->queue_info[queue].hw_queue_refcount == 1 &&
mvm->queue_info[queue].status == IWL_MVM_QUEUE_SHARED) {
mvm->queue_info[queue].status = IWL_MVM_QUEUE_RECONFIGURING;
IWL_DEBUG_TX_QUEUES(mvm, "Marking Q:%d for reconfig\n",
queue);
}
}
void iwl_mvm_inactivity_check(struct iwl_mvm *mvm)
{
unsigned long timeout_queues_map = 0;
unsigned long now = jiffies;
int i;
spin_lock_bh(&mvm->queue_info_lock);
for (i = 0; i < IWL_MAX_HW_QUEUES; i++)
if (mvm->queue_info[i].hw_queue_refcount > 0)
timeout_queues_map |= BIT(i);
spin_unlock_bh(&mvm->queue_info_lock);
rcu_read_lock();
/*
* If a queue time outs - mark it as INACTIVE (don't remove right away
* if we don't have to.) This is an optimization in case traffic comes
* later, and we don't HAVE to use a currently-inactive queue
*/
for_each_set_bit(i, &timeout_queues_map, IWL_MAX_HW_QUEUES) {
struct ieee80211_sta *sta;
struct iwl_mvm_sta *mvmsta;
u8 sta_id;
int tid;
unsigned long inactive_tid_bitmap = 0;
unsigned long queue_tid_bitmap;
spin_lock_bh(&mvm->queue_info_lock);
queue_tid_bitmap = mvm->queue_info[i].tid_bitmap;
/* If TXQ isn't in active use anyway - nothing to do here... */
if (mvm->queue_info[i].status != IWL_MVM_QUEUE_READY &&
mvm->queue_info[i].status != IWL_MVM_QUEUE_SHARED) {
spin_unlock_bh(&mvm->queue_info_lock);
continue;
}
/* Check to see if there are inactive TIDs on this queue */
for_each_set_bit(tid, &queue_tid_bitmap,
IWL_MAX_TID_COUNT + 1) {
if (time_after(mvm->queue_info[i].last_frame_time[tid] +
IWL_MVM_DQA_QUEUE_TIMEOUT, now))
continue;
inactive_tid_bitmap |= BIT(tid);
}
spin_unlock_bh(&mvm->queue_info_lock);
/* If all TIDs are active - finish check on this queue */
if (!inactive_tid_bitmap)
continue;
/*
* If we are here - the queue hadn't been served recently and is
* in use
*/
sta_id = mvm->queue_info[i].ra_sta_id;
sta = rcu_dereference(mvm->fw_id_to_mac_id[sta_id]);
/*
* If the STA doesn't exist anymore, it isn't an error. It could
* be that it was removed since getting the queues, and in this
* case it should've inactivated its queues anyway.
*/
if (IS_ERR_OR_NULL(sta))
continue;
mvmsta = iwl_mvm_sta_from_mac80211(sta);
spin_lock_bh(&mvmsta->lock);
spin_lock(&mvm->queue_info_lock);
iwl_mvm_remove_inactive_tids(mvm, mvmsta, i,
inactive_tid_bitmap);
spin_unlock(&mvm->queue_info_lock);
spin_unlock_bh(&mvmsta->lock);
}
rcu_read_unlock();
}
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_read_prph(mvm->trans, DEVICE_SYSTEM_TIME_REG);
*boottime = ktime_get_boot_ns();
if (!ps_disabled) {
mvm->ps_disabled = ps_disabled;
iwl_mvm_power_update_device(mvm);
}
}
int iwl_mvm_send_lqm_cmd(struct ieee80211_vif *vif,
enum iwl_lqm_cmd_operatrions operation,
u32 duration, u32 timeout)
{
struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
struct iwl_link_qual_msrmnt_cmd cmd = {
.cmd_operation = cpu_to_le32(operation),
.mac_id = cpu_to_le32(mvm_vif->id),
.measurement_time = cpu_to_le32(duration),
.timeout = cpu_to_le32(timeout),
};
u32 cmdid =
iwl_cmd_id(LINK_QUALITY_MEASUREMENT_CMD, MAC_CONF_GROUP, 0);
int ret;
if (!fw_has_capa(&mvm_vif->mvm->fw->ucode_capa,
IWL_UCODE_TLV_CAPA_LQM_SUPPORT))
return -EOPNOTSUPP;
if (vif->type != NL80211_IFTYPE_STATION || vif->p2p)
return -EINVAL;
switch (operation) {
case LQM_CMD_OPERATION_START_MEASUREMENT:
if (iwl_mvm_lqm_active(mvm_vif->mvm))
return -EBUSY;
if (!vif->bss_conf.assoc)
return -EINVAL;
mvm_vif->lqm_active = true;
break;
case LQM_CMD_OPERATION_STOP_MEASUREMENT:
if (!iwl_mvm_lqm_active(mvm_vif->mvm))
return -EINVAL;
break;
default:
return -EINVAL;
}
ret = iwl_mvm_send_cmd_pdu(mvm_vif->mvm, cmdid, 0, sizeof(cmd),
&cmd);
/* command failed - roll back lqm_active state */
if (ret) {
mvm_vif->lqm_active =
operation == LQM_CMD_OPERATION_STOP_MEASUREMENT;
}
return ret;
}
static void iwl_mvm_lqm_active_iterator(void *_data, u8 *mac,
struct ieee80211_vif *vif)
{
struct iwl_mvm_vif *mvm_vif = iwl_mvm_vif_from_mac80211(vif);
bool *lqm_active = _data;
*lqm_active = *lqm_active || mvm_vif->lqm_active;
}
bool iwl_mvm_lqm_active(struct iwl_mvm *mvm)
{
bool ret = false;
lockdep_assert_held(&mvm->mutex);
ieee80211_iterate_active_interfaces_atomic(
mvm->hw, IEEE80211_IFACE_ITER_NORMAL,
iwl_mvm_lqm_active_iterator, &ret);
return ret;
}
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