/****************************************************************************** * * 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 * * 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 * 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 * 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 #include "iwl-debug.h" #include "iwl-io.h" #include "iwl-prph.h" #include "iwl-csr.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; 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); } static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u32 base) { struct iwl_trans *trans = mvm->trans; struct iwl_error_event_table table; u32 val; 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; } /* 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_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); usleep_range(1000, 2000); /* set INIT_DONE flag */ iwl_set_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_INIT_DONE); /* and wait for clock stabilization */ if (trans->cfg->device_family == IWL_DEVICE_FAMILY_8000) udelay(2); err = iwl_poll_bit(trans, CSR_GP_CNTRL, CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, CSR_GP_CNTRL_REG_FLAG_MAC_CLOCK_READY, 25000); if (err < 0) { IWL_DEBUG_INFO(trans, "Failed to reset the card for the dump\n"); 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); } void iwl_mvm_dump_nic_error_log(struct iwl_mvm *mvm) { iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[0]); if (mvm->error_event_table[1]) iwl_mvm_dump_lmac_error_log(mvm, mvm->error_event_table[1]); 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); /* This should not be hit with new TX path */ if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -ENOSPC; /* 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; if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return -EINVAL; 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; } static bool iwl_mvm_update_txq_mapping(struct iwl_mvm *mvm, int queue, int mac80211_queue, u8 sta_id, u8 tid) { 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(tid)) { spin_unlock_bh(&mvm->queue_info_lock); IWL_ERR(mvm, "Trying to enable TXQ %d with existing TID %d\n", queue, tid); return false; } /* Update mappings and refcounts */ if (mvm->queue_info[queue].hw_queue_refcount > 0) enable_queue = false; if (mac80211_queue != IEEE80211_INVAL_HW_QUEUE) { WARN(mac80211_queue >= BITS_PER_BYTE * sizeof(mvm->hw_queue_to_mac80211[0]), "cannot track mac80211 queue %d (queue %d, sta %d, tid %d)\n", mac80211_queue, queue, sta_id, tid); mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); } mvm->queue_info[queue].hw_queue_refcount++; mvm->queue_info[queue].tid_bitmap |= BIT(tid); mvm->queue_info[queue].ra_sta_id = sta_id; if (enable_queue) { if (tid != IWL_MAX_TID_COUNT) mvm->queue_info[queue].mac80211_ac = tid_to_mac80211_ac[tid]; else mvm->queue_info[queue].mac80211_ac = IEEE80211_AC_VO; mvm->queue_info[queue].txq_tid = 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->hw_queue_to_mac80211[queue]); spin_unlock_bh(&mvm->queue_info_lock); return enable_queue; } int iwl_mvm_tvqm_enable_txq(struct iwl_mvm *mvm, int mac80211_queue, u8 sta_id, u8 tid, unsigned int timeout) { struct iwl_tx_queue_cfg_cmd cmd = { .flags = cpu_to_le16(TX_QUEUE_CFG_ENABLE_QUEUE), .sta_id = sta_id, .tid = tid, }; int queue; if (cmd.tid == IWL_MAX_TID_COUNT) cmd.tid = IWL_MGMT_TID; queue = iwl_trans_txq_alloc(mvm->trans, (void *)&cmd, SCD_QUEUE_CFG, timeout); if (queue < 0) { IWL_DEBUG_TX_QUEUES(mvm, "Failed allocating TXQ for sta %d tid %d, ret: %d\n", sta_id, tid, queue); return queue; } IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d for sta %d tid %d\n", queue, sta_id, tid); mvm->hw_queue_to_mac80211[queue] |= BIT(mac80211_queue); IWL_DEBUG_TX_QUEUES(mvm, "Enabling TXQ #%d (mac80211 map:0x%x)\n", queue, mvm->hw_queue_to_mac80211[queue]); return queue; } bool 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) { 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, }; bool inc_ssn; if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return false; /* Send the enabling command if we need to */ if (!iwl_mvm_update_txq_mapping(mvm, queue, mac80211_queue, cfg->sta_id, cfg->tid)) return false; inc_ssn = iwl_trans_txq_enable_cfg(mvm->trans, queue, ssn, NULL, wdg_timeout); if (inc_ssn) le16_add_cpu(&cmd.ssn, 1); 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); return inc_ssn; } int 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; if (iwl_mvm_has_new_tx_api(mvm)) { spin_lock_bh(&mvm->queue_info_lock); mvm->hw_queue_to_mac80211[queue] &= ~BIT(mac80211_queue); spin_unlock_bh(&mvm->queue_info_lock); iwl_trans_txq_free(mvm->trans, queue); return 0; } 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 0; } 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->hw_queue_to_mac80211[queue] &= ~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->hw_queue_to_mac80211[queue]); /* 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 0; } 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->hw_queue_to_mac80211[queue], "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->hw_queue_to_mac80211[queue], 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->hw_queue_to_mac80211[queue] = 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(struct iwl_scd_txq_cfg_cmd), &cmd); if (ret) IWL_ERR(mvm, "Failed to disable queue %d (ret=%d)\n", queue, ret); return 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_INVALID_STA)) 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; } 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)) 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); 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); if (WARN_ON(iwl_mvm_has_new_tx_api(mvm))) return; /* 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(mvm, &mvmsta->tid_data[tid])) tid_bitmap &= ~BIT(tid); /* Don't mark as inactive any TID that has an active BA */ if (mvmsta->tid_data[tid].state != IWL_AGG_OFF) 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 = IWL_MVM_INVALID_QUEUE; mvm->hw_queue_to_mac80211[queue] &= ~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->hw_queue_to_mac80211[queue] |= 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; if (iwl_mvm_has_new_tx_api(mvm)) return; 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; }