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1421 lines
39 KiB
1421 lines
39 KiB
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause |
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/* |
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* Copyright (C) 2012-2014, 2018-2020 Intel Corporation |
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* Copyright (C) 2013-2014 Intel Mobile Communications GmbH |
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* Copyright (C) 2015-2017 Intel Deutschland GmbH |
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*/ |
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#include <net/mac80211.h> |
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|
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#include "iwl-debug.h" |
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#include "iwl-io.h" |
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#include "iwl-prph.h" |
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#include "iwl-csr.h" |
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#include "mvm.h" |
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#include "fw/api/rs.h" |
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#include "fw/img.h" |
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|
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/* |
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* Will return 0 even if the cmd failed when RFKILL is asserted unless |
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* CMD_WANT_SKB is set in cmd->flags. |
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*/ |
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int iwl_mvm_send_cmd(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd) |
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{ |
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int ret; |
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|
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#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) |
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if (WARN_ON(mvm->d3_test_active)) |
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return -EIO; |
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#endif |
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|
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/* |
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* Synchronous commands from this op-mode must hold |
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* the mutex, this ensures we don't try to send two |
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* (or more) synchronous commands at a time. |
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*/ |
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if (!(cmd->flags & CMD_ASYNC)) |
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lockdep_assert_held(&mvm->mutex); |
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|
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ret = iwl_trans_send_cmd(mvm->trans, cmd); |
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|
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/* |
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* If the caller wants the SKB, then don't hide any problems, the |
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* caller might access the response buffer which will be NULL if |
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* the command failed. |
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*/ |
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if (cmd->flags & CMD_WANT_SKB) |
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return ret; |
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|
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/* |
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* Silently ignore failures if RFKILL is asserted or |
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* we are in suspend\resume process |
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*/ |
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if (!ret || ret == -ERFKILL || ret == -EHOSTDOWN) |
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return 0; |
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return ret; |
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} |
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|
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int iwl_mvm_send_cmd_pdu(struct iwl_mvm *mvm, u32 id, |
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u32 flags, u16 len, const void *data) |
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{ |
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struct iwl_host_cmd cmd = { |
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.id = id, |
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.len = { len, }, |
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.data = { data, }, |
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.flags = flags, |
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}; |
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return iwl_mvm_send_cmd(mvm, &cmd); |
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} |
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|
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/* |
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* We assume that the caller set the status to the success value |
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*/ |
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int iwl_mvm_send_cmd_status(struct iwl_mvm *mvm, struct iwl_host_cmd *cmd, |
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u32 *status) |
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{ |
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struct iwl_rx_packet *pkt; |
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struct iwl_cmd_response *resp; |
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int ret, resp_len; |
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lockdep_assert_held(&mvm->mutex); |
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|
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#if defined(CONFIG_IWLWIFI_DEBUGFS) && defined(CONFIG_PM_SLEEP) |
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if (WARN_ON(mvm->d3_test_active)) |
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return -EIO; |
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#endif |
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/* |
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* Only synchronous commands can wait for status, |
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* we use WANT_SKB so the caller can't. |
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*/ |
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if (WARN_ONCE(cmd->flags & (CMD_ASYNC | CMD_WANT_SKB), |
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"cmd flags %x", cmd->flags)) |
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return -EINVAL; |
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cmd->flags |= CMD_WANT_SKB; |
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ret = iwl_trans_send_cmd(mvm->trans, cmd); |
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if (ret == -ERFKILL) { |
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/* |
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* The command failed because of RFKILL, don't update |
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* the status, leave it as success and return 0. |
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*/ |
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return 0; |
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} else if (ret) { |
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return ret; |
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} |
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pkt = cmd->resp_pkt; |
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resp_len = iwl_rx_packet_payload_len(pkt); |
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if (WARN_ON_ONCE(resp_len != sizeof(*resp))) { |
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ret = -EIO; |
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goto out_free_resp; |
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} |
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resp = (void *)pkt->data; |
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*status = le32_to_cpu(resp->status); |
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out_free_resp: |
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iwl_free_resp(cmd); |
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return ret; |
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} |
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|
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/* |
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* We assume that the caller set the status to the sucess value |
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*/ |
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int iwl_mvm_send_cmd_pdu_status(struct iwl_mvm *mvm, u32 id, u16 len, |
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const void *data, u32 *status) |
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{ |
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struct iwl_host_cmd cmd = { |
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.id = id, |
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.len = { len, }, |
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.data = { data, }, |
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}; |
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return iwl_mvm_send_cmd_status(mvm, &cmd, status); |
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} |
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#define IWL_DECLARE_RATE_INFO(r) \ |
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[IWL_RATE_##r##M_INDEX] = IWL_RATE_##r##M_PLCP |
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|
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/* |
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* Translate from fw_rate_index (IWL_RATE_XXM_INDEX) to PLCP |
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*/ |
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static const u8 fw_rate_idx_to_plcp[IWL_RATE_COUNT] = { |
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IWL_DECLARE_RATE_INFO(1), |
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IWL_DECLARE_RATE_INFO(2), |
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IWL_DECLARE_RATE_INFO(5), |
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IWL_DECLARE_RATE_INFO(11), |
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IWL_DECLARE_RATE_INFO(6), |
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IWL_DECLARE_RATE_INFO(9), |
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IWL_DECLARE_RATE_INFO(12), |
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IWL_DECLARE_RATE_INFO(18), |
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IWL_DECLARE_RATE_INFO(24), |
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IWL_DECLARE_RATE_INFO(36), |
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IWL_DECLARE_RATE_INFO(48), |
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IWL_DECLARE_RATE_INFO(54), |
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}; |
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int iwl_mvm_legacy_rate_to_mac80211_idx(u32 rate_n_flags, |
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enum nl80211_band band) |
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{ |
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int rate = rate_n_flags & RATE_LEGACY_RATE_MSK; |
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int idx; |
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int band_offset = 0; |
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|
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/* Legacy rate format, search for match in table */ |
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if (band != NL80211_BAND_2GHZ) |
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band_offset = IWL_FIRST_OFDM_RATE; |
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for (idx = band_offset; idx < IWL_RATE_COUNT_LEGACY; idx++) |
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if (fw_rate_idx_to_plcp[idx] == rate) |
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return idx - band_offset; |
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return -1; |
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} |
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u8 iwl_mvm_mac80211_idx_to_hwrate(int rate_idx) |
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{ |
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/* Get PLCP rate for tx_cmd->rate_n_flags */ |
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return fw_rate_idx_to_plcp[rate_idx]; |
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} |
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u8 iwl_mvm_mac80211_ac_to_ucode_ac(enum ieee80211_ac_numbers ac) |
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{ |
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static const u8 mac80211_ac_to_ucode_ac[] = { |
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AC_VO, |
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AC_VI, |
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AC_BE, |
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AC_BK |
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}; |
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return mac80211_ac_to_ucode_ac[ac]; |
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} |
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void iwl_mvm_rx_fw_error(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) |
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{ |
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struct iwl_rx_packet *pkt = rxb_addr(rxb); |
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struct iwl_error_resp *err_resp = (void *)pkt->data; |
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IWL_ERR(mvm, "FW Error notification: type 0x%08X cmd_id 0x%02X\n", |
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le32_to_cpu(err_resp->error_type), err_resp->cmd_id); |
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IWL_ERR(mvm, "FW Error notification: seq 0x%04X service 0x%08X\n", |
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le16_to_cpu(err_resp->bad_cmd_seq_num), |
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le32_to_cpu(err_resp->error_service)); |
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IWL_ERR(mvm, "FW Error notification: timestamp 0x%016llX\n", |
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le64_to_cpu(err_resp->timestamp)); |
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} |
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/* |
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* Returns the first antenna as ANT_[ABC], as defined in iwl-config.h. |
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* The parameter should also be a combination of ANT_[ABC]. |
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*/ |
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u8 first_antenna(u8 mask) |
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{ |
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BUILD_BUG_ON(ANT_A != BIT(0)); /* using ffs is wrong if not */ |
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if (WARN_ON_ONCE(!mask)) /* ffs will return 0 if mask is zeroed */ |
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return BIT(0); |
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return BIT(ffs(mask) - 1); |
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} |
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/* |
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* Toggles between TX antennas to send the probe request on. |
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* Receives the bitmask of valid TX antennas and the *index* used |
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* for the last TX, and returns the next valid *index* to use. |
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* In order to set it in the tx_cmd, must do BIT(idx). |
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*/ |
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u8 iwl_mvm_next_antenna(struct iwl_mvm *mvm, u8 valid, u8 last_idx) |
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{ |
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u8 ind = last_idx; |
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int i; |
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|
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for (i = 0; i < MAX_ANT_NUM; i++) { |
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ind = (ind + 1) % MAX_ANT_NUM; |
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if (valid & BIT(ind)) |
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return ind; |
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} |
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WARN_ONCE(1, "Failed to toggle between antennas 0x%x", valid); |
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return last_idx; |
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} |
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|
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/* |
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* Note: This structure is read from the device with IO accesses, |
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* and the reading already does the endian conversion. As it is |
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* read with u32-sized accesses, any members with a different size |
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* need to be ordered correctly though! |
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*/ |
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struct iwl_error_event_table_v1 { |
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u32 valid; /* (nonzero) valid, (0) log is empty */ |
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u32 error_id; /* type of error */ |
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u32 pc; /* program counter */ |
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u32 blink1; /* branch link */ |
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u32 blink2; /* branch link */ |
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u32 ilink1; /* interrupt link */ |
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u32 ilink2; /* interrupt link */ |
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u32 data1; /* error-specific data */ |
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u32 data2; /* error-specific data */ |
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u32 data3; /* error-specific data */ |
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u32 bcon_time; /* beacon timer */ |
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u32 tsf_low; /* network timestamp function timer */ |
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u32 tsf_hi; /* network timestamp function timer */ |
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u32 gp1; /* GP1 timer register */ |
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u32 gp2; /* GP2 timer register */ |
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u32 gp3; /* GP3 timer register */ |
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u32 ucode_ver; /* uCode version */ |
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u32 hw_ver; /* HW Silicon version */ |
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u32 brd_ver; /* HW board version */ |
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u32 log_pc; /* log program counter */ |
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u32 frame_ptr; /* frame pointer */ |
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u32 stack_ptr; /* stack pointer */ |
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u32 hcmd; /* last host command header */ |
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u32 isr0; /* isr status register LMPM_NIC_ISR0: |
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* rxtx_flag */ |
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u32 isr1; /* isr status register LMPM_NIC_ISR1: |
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* host_flag */ |
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u32 isr2; /* isr status register LMPM_NIC_ISR2: |
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* enc_flag */ |
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u32 isr3; /* isr status register LMPM_NIC_ISR3: |
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* time_flag */ |
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u32 isr4; /* isr status register LMPM_NIC_ISR4: |
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* wico interrupt */ |
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u32 isr_pref; /* isr status register LMPM_NIC_PREF_STAT */ |
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u32 wait_event; /* wait event() caller address */ |
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u32 l2p_control; /* L2pControlField */ |
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u32 l2p_duration; /* L2pDurationField */ |
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u32 l2p_mhvalid; /* L2pMhValidBits */ |
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u32 l2p_addr_match; /* L2pAddrMatchStat */ |
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u32 lmpm_pmg_sel; /* indicate which clocks are turned on |
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* (LMPM_PMG_SEL) */ |
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u32 u_timestamp; /* indicate when the date and time of the |
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* compilation */ |
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u32 flow_handler; /* FH read/write pointers, RX credit */ |
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} __packed /* LOG_ERROR_TABLE_API_S_VER_1 */; |
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|
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struct iwl_error_event_table { |
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u32 valid; /* (nonzero) valid, (0) log is empty */ |
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u32 error_id; /* type of error */ |
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u32 trm_hw_status0; /* TRM HW status */ |
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u32 trm_hw_status1; /* TRM HW status */ |
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u32 blink2; /* branch link */ |
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u32 ilink1; /* interrupt link */ |
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u32 ilink2; /* interrupt link */ |
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u32 data1; /* error-specific data */ |
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u32 data2; /* error-specific data */ |
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u32 data3; /* error-specific data */ |
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u32 bcon_time; /* beacon timer */ |
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u32 tsf_low; /* network timestamp function timer */ |
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u32 tsf_hi; /* network timestamp function timer */ |
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u32 gp1; /* GP1 timer register */ |
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u32 gp2; /* GP2 timer register */ |
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u32 fw_rev_type; /* firmware revision type */ |
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u32 major; /* uCode version major */ |
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u32 minor; /* uCode version minor */ |
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u32 hw_ver; /* HW Silicon version */ |
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u32 brd_ver; /* HW board version */ |
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u32 log_pc; /* log program counter */ |
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u32 frame_ptr; /* frame pointer */ |
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u32 stack_ptr; /* stack pointer */ |
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u32 hcmd; /* last host command header */ |
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u32 isr0; /* isr status register LMPM_NIC_ISR0: |
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* rxtx_flag */ |
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u32 isr1; /* isr status register LMPM_NIC_ISR1: |
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* host_flag */ |
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u32 isr2; /* isr status register LMPM_NIC_ISR2: |
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* enc_flag */ |
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u32 isr3; /* isr status register LMPM_NIC_ISR3: |
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* time_flag */ |
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u32 isr4; /* isr status register LMPM_NIC_ISR4: |
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* wico interrupt */ |
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u32 last_cmd_id; /* last HCMD id handled by the firmware */ |
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u32 wait_event; /* wait event() caller address */ |
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u32 l2p_control; /* L2pControlField */ |
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u32 l2p_duration; /* L2pDurationField */ |
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u32 l2p_mhvalid; /* L2pMhValidBits */ |
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u32 l2p_addr_match; /* L2pAddrMatchStat */ |
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u32 lmpm_pmg_sel; /* indicate which clocks are turned on |
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* (LMPM_PMG_SEL) */ |
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u32 u_timestamp; /* indicate when the date and time of the |
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* compilation */ |
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u32 flow_handler; /* FH read/write pointers, RX credit */ |
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} __packed /* LOG_ERROR_TABLE_API_S_VER_3 */; |
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|
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/* |
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* UMAC error struct - relevant starting from family 8000 chip. |
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* Note: This structure is read from the device with IO accesses, |
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* and the reading already does the endian conversion. As it is |
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* read with u32-sized accesses, any members with a different size |
|
* need to be ordered correctly though! |
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*/ |
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struct iwl_umac_error_event_table { |
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u32 valid; /* (nonzero) valid, (0) log is empty */ |
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u32 error_id; /* type of error */ |
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u32 blink1; /* branch link */ |
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u32 blink2; /* branch link */ |
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u32 ilink1; /* interrupt link */ |
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u32 ilink2; /* interrupt link */ |
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u32 data1; /* error-specific data */ |
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u32 data2; /* error-specific data */ |
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u32 data3; /* error-specific data */ |
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u32 umac_major; |
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u32 umac_minor; |
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u32 frame_pointer; /* core register 27*/ |
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u32 stack_pointer; /* core register 28 */ |
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u32 cmd_header; /* latest host cmd sent to UMAC */ |
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u32 nic_isr_pref; /* ISR status register */ |
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} __packed; |
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|
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#define ERROR_START_OFFSET (1 * sizeof(u32)) |
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#define ERROR_ELEM_SIZE (7 * sizeof(u32)) |
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|
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static void iwl_mvm_dump_umac_error_log(struct iwl_mvm *mvm) |
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{ |
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struct iwl_trans *trans = mvm->trans; |
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struct iwl_umac_error_event_table table = {}; |
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u32 base = mvm->trans->dbg.umac_error_event_table; |
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|
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if (!base && |
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!(mvm->trans->dbg.error_event_table_tlv_status & |
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IWL_ERROR_EVENT_TABLE_UMAC)) |
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return; |
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|
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iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); |
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|
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if (table.valid) |
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mvm->fwrt.dump.umac_err_id = table.error_id; |
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|
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if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { |
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IWL_ERR(trans, "Start IWL Error Log Dump:\n"); |
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IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", |
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mvm->status, table.valid); |
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} |
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|
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IWL_ERR(mvm, "0x%08X | %s\n", table.error_id, |
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iwl_fw_lookup_assert_desc(table.error_id)); |
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IWL_ERR(mvm, "0x%08X | umac branchlink1\n", table.blink1); |
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IWL_ERR(mvm, "0x%08X | umac branchlink2\n", table.blink2); |
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IWL_ERR(mvm, "0x%08X | umac interruptlink1\n", table.ilink1); |
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IWL_ERR(mvm, "0x%08X | umac interruptlink2\n", table.ilink2); |
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IWL_ERR(mvm, "0x%08X | umac data1\n", table.data1); |
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IWL_ERR(mvm, "0x%08X | umac data2\n", table.data2); |
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IWL_ERR(mvm, "0x%08X | umac data3\n", table.data3); |
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IWL_ERR(mvm, "0x%08X | umac major\n", table.umac_major); |
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IWL_ERR(mvm, "0x%08X | umac minor\n", table.umac_minor); |
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IWL_ERR(mvm, "0x%08X | frame pointer\n", table.frame_pointer); |
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IWL_ERR(mvm, "0x%08X | stack pointer\n", table.stack_pointer); |
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IWL_ERR(mvm, "0x%08X | last host cmd\n", table.cmd_header); |
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IWL_ERR(mvm, "0x%08X | isr status reg\n", table.nic_isr_pref); |
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} |
|
|
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static void iwl_mvm_dump_lmac_error_log(struct iwl_mvm *mvm, u8 lmac_num) |
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{ |
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struct iwl_trans *trans = mvm->trans; |
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struct iwl_error_event_table table = {}; |
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u32 val, base = mvm->trans->dbg.lmac_error_event_table[lmac_num]; |
|
|
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if (mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) { |
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if (!base) |
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base = mvm->fw->init_errlog_ptr; |
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} else { |
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if (!base) |
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base = mvm->fw->inst_errlog_ptr; |
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} |
|
|
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if (base < 0x400000) { |
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IWL_ERR(mvm, |
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"Not valid error log pointer 0x%08X for %s uCode\n", |
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base, |
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(mvm->fwrt.cur_fw_img == IWL_UCODE_INIT) |
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? "Init" : "RT"); |
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return; |
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} |
|
|
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/* check if there is a HW error */ |
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val = iwl_trans_read_mem32(trans, base); |
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if (((val & ~0xf) == 0xa5a5a5a0) || ((val & ~0xf) == 0x5a5a5a50)) { |
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int err; |
|
|
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IWL_ERR(trans, "HW error, resetting before reading\n"); |
|
|
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/* reset the device */ |
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iwl_trans_sw_reset(trans); |
|
|
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err = iwl_finish_nic_init(trans, trans->trans_cfg); |
|
if (err) |
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return; |
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} |
|
|
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iwl_trans_read_mem_bytes(trans, base, &table, sizeof(table)); |
|
|
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if (table.valid) |
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mvm->fwrt.dump.lmac_err_id[lmac_num] = table.error_id; |
|
|
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if (ERROR_START_OFFSET <= table.valid * ERROR_ELEM_SIZE) { |
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IWL_ERR(trans, "Start IWL Error Log Dump:\n"); |
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IWL_ERR(trans, "Status: 0x%08lX, count: %d\n", |
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mvm->status, table.valid); |
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} |
|
|
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/* Do not change this output - scripts rely on it */ |
|
|
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IWL_ERR(mvm, "Loaded firmware version: %s\n", mvm->fw->fw_version); |
|
|
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IWL_ERR(mvm, "0x%08X | %-28s\n", table.error_id, |
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iwl_fw_lookup_assert_desc(table.error_id)); |
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IWL_ERR(mvm, "0x%08X | trm_hw_status0\n", table.trm_hw_status0); |
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IWL_ERR(mvm, "0x%08X | trm_hw_status1\n", table.trm_hw_status1); |
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IWL_ERR(mvm, "0x%08X | branchlink2\n", table.blink2); |
|
IWL_ERR(mvm, "0x%08X | interruptlink1\n", table.ilink1); |
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IWL_ERR(mvm, "0x%08X | interruptlink2\n", table.ilink2); |
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IWL_ERR(mvm, "0x%08X | data1\n", table.data1); |
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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); |
|
} |
|
|
|
static void iwl_mvm_dump_iml_error_log(struct iwl_mvm *mvm) |
|
{ |
|
struct iwl_trans *trans = mvm->trans; |
|
u32 error, data1; |
|
|
|
if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) { |
|
error = UMAG_SB_CPU_2_STATUS; |
|
data1 = UMAG_SB_CPU_1_STATUS; |
|
} else if (mvm->trans->trans_cfg->device_family >= |
|
IWL_DEVICE_FAMILY_8000) { |
|
error = SB_CPU_2_STATUS; |
|
data1 = SB_CPU_1_STATUS; |
|
} else { |
|
return; |
|
} |
|
|
|
error = iwl_read_umac_prph(trans, UMAG_SB_CPU_2_STATUS); |
|
|
|
IWL_ERR(trans, "IML/ROM dump:\n"); |
|
|
|
if (error & 0xFFFF0000) |
|
IWL_ERR(trans, "0x%04X | IML/ROM SYSASSERT\n", error >> 16); |
|
|
|
IWL_ERR(mvm, "0x%08X | IML/ROM error/state\n", error); |
|
IWL_ERR(mvm, "0x%08X | IML/ROM data1\n", |
|
iwl_read_umac_prph(trans, data1)); |
|
|
|
if (mvm->trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_22000) |
|
IWL_ERR(mvm, "0x%08X | IML/ROM WFPM_AUTH_KEY_0\n", |
|
iwl_read_umac_prph(trans, SB_MODIFY_CFG_FLAG)); |
|
} |
|
|
|
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_mvm_dump_iml_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 |
|
* @mvm: Driver data. |
|
* @lq: Link quality command to send. |
|
* |
|
* 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 |
|
* @mvm: Driver data. |
|
* @vif: Pointer to the ieee80211_vif structure |
|
* @req_type: The part of the driver who call for a change. |
|
* @smps_request: 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_bss_find_iter_data { |
|
struct ieee80211_vif *vif; |
|
u32 macid; |
|
}; |
|
|
|
static void iwl_mvm_bss_find_iface_iterator(void *_data, u8 *mac, |
|
struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_bss_find_iter_data *data = _data; |
|
struct iwl_mvm_vif *mvmvif = iwl_mvm_vif_from_mac80211(vif); |
|
|
|
if (mvmvif->id == data->macid) |
|
data->vif = vif; |
|
} |
|
|
|
struct ieee80211_vif *iwl_mvm_get_vif_by_macid(struct iwl_mvm *mvm, u32 macid) |
|
{ |
|
struct iwl_bss_find_iter_data data = { |
|
.macid = macid, |
|
}; |
|
|
|
lockdep_assert_held(&mvm->mutex); |
|
|
|
ieee80211_iterate_active_interfaces_atomic( |
|
mvm->hw, IEEE80211_IFACE_ITER_NORMAL, |
|
iwl_mvm_bss_find_iface_iterator, &data); |
|
|
|
return 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->trans->trans_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 default_timeout; |
|
} |
|
|
|
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->trans->trans_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; |
|
} |
|
|
|
static void iwl_mvm_tcm_iter(void *_data, u8 *mac, struct ieee80211_vif *vif) |
|
{ |
|
struct iwl_mvm *mvm = _data; |
|
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); |
|
} |
|
} |
|
|
|
static void iwl_mvm_tcm_results(struct iwl_mvm *mvm) |
|
{ |
|
mutex_lock(&mvm->mutex); |
|
|
|
ieee80211_iterate_active_interfaces( |
|
mvm->hw, IEEE80211_IFACE_ITER_NORMAL, |
|
iwl_mvm_tcm_iter, mvm); |
|
|
|
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_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->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); |
|
} |
|
}
|
|
|