From 0a3b7119000d706dfbc7e0c5b66e192a646d365f Mon Sep 17 00:00:00 2001 From: Chaya Rachel Ivgi Date: Wed, 16 Dec 2015 16:34:55 +0200 Subject: [PATCH] iwlwifi: mvm: add CT-KILL notification Up to today the driver was notified of the temperature from the FW and decided whether to enter CT-kill or not. From now on, the FW will decide when to enter CT-kill and will notify the driver. Add support for this notification. Signed-off-by: Chaya Rachel Ivgi Signed-off-by: Luca Coelho Signed-off-by: Emmanuel Grumbach --- .../net/wireless/intel/iwlwifi/iwl-fw-file.h | 5 ++++ .../net/wireless/intel/iwlwifi/mvm/fw-api.h | 12 +++++++++ drivers/net/wireless/intel/iwlwifi/mvm/mvm.h | 15 +++++++++++ drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 3 +++ drivers/net/wireless/intel/iwlwifi/mvm/tt.c | 27 ++++++++++++++++++- 5 files changed, 61 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h index e2dbc67a367b..724a3eef78b1 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-fw-file.h @@ -318,6 +318,9 @@ typedef unsigned int __bitwise__ iwl_ucode_tlv_capa_t; * @IWL_UCODE_TLV_CAPA_BEACON_STORING: firmware will store the latest beacon * from AP and will send it upon d0i3 exit. * @IWL_UCODE_TLV_CAPA_LAR_SUPPORT_V2: support LAR API V2 + * @IWL_UCODE_TLV_CAPA_CT_KILL_BY_FW: firmware responsible for CT-kill + * @IWL_UCODE_TLV_CAPA_TEMP_THS_REPORT_SUPPORT: supports temperature + * thresholds reporting * * @NUM_IWL_UCODE_TLV_CAPA: number of bits used */ @@ -351,6 +354,8 @@ enum iwl_ucode_tlv_capa { IWL_UCODE_TLV_CAPA_BEACON_ANT_SELECTION = (__force iwl_ucode_tlv_capa_t)71, IWL_UCODE_TLV_CAPA_BEACON_STORING = (__force iwl_ucode_tlv_capa_t)72, IWL_UCODE_TLV_CAPA_LAR_SUPPORT_V2 = (__force iwl_ucode_tlv_capa_t)73, + IWL_UCODE_TLV_CAPA_CT_KILL_BY_FW = (__force iwl_ucode_tlv_capa_t)74, + IWL_UCODE_TLV_CAPA_TEMP_THS_REPORT_SUPPORT = (__force iwl_ucode_tlv_capa_t)75, NUM_IWL_UCODE_TLV_CAPA #ifdef __CHECKER__ diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h index f332497e29d1..ecbf7cb600ce 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw-api.h @@ -279,6 +279,7 @@ enum { */ enum iwl_phy_ops_subcmd_ids { CMD_DTS_MEASUREMENT_TRIGGER_WIDE = 0x0, + CT_KILL_NOTIFICATION = 0xFE, DTS_MEASUREMENT_NOTIF_WIDE = 0xFF, }; @@ -1685,6 +1686,17 @@ struct iwl_dts_measurement_notif { __le32 voltage; } __packed; /* TEMPERATURE_MEASUREMENT_TRIGGER_NTFY_S */ +/** + * struct ct_kill_notif - CT-kill entry notification + * + * @temperature: the current temperature in celsius + * @reserved: reserved + */ +struct ct_kill_notif { + __le16 temperature; + __le16 reserved; +} __packed; /* GRP_PHY_CT_KILL_NTF */ + /*********************************** * TDLS API ***********************************/ diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h index ebe37bb0ce4c..200bbb76ff0a 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mvm.h @@ -7,6 +7,7 @@ * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH + * Copyright(c) 2016 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 @@ -33,6 +34,7 @@ * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2015 Intel Mobile Communications GmbH + * Copyright(c) 2016 Intel Deutschland GmbH * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -1028,6 +1030,18 @@ static inline bool iwl_mvm_has_new_rx_api(struct iwl_mvm *mvm) IWL_UCODE_TLV_CAPA_MULTI_QUEUE_RX_SUPPORT); } +static inline bool iwl_mvm_is_tt_in_fw(struct iwl_mvm *mvm) +{ + /* these two TLV are redundant since the responsibility to CT-kill by + * FW happens only after we send at least one command of + * temperature THs report. + */ + return fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_CT_KILL_BY_FW) && + fw_has_capa(&mvm->fw->ucode_capa, + IWL_UCODE_TLV_CAPA_TEMP_THS_REPORT_SUPPORT); +} + extern const u8 iwl_mvm_ac_to_tx_fifo[]; struct iwl_rate_info { @@ -1502,6 +1516,7 @@ void iwl_mvm_tt_initialize(struct iwl_mvm *mvm, u32 min_backoff); void iwl_mvm_tt_exit(struct iwl_mvm *mvm); void iwl_mvm_set_hw_ctkill_state(struct iwl_mvm *mvm, bool state); int iwl_mvm_get_temp(struct iwl_mvm *mvm, s32 *temp); +void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb); /* Location Aware Regulatory */ struct iwl_mcc_update_resp * diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index 09a94a5efb61..ecc371e1f3f0 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -263,6 +263,8 @@ static const struct iwl_rx_handlers iwl_mvm_rx_handlers[] = { RX_HANDLER(DTS_MEASUREMENT_NOTIFICATION, iwl_mvm_temp_notif, true), RX_HANDLER_GRP(PHY_OPS_GROUP, DTS_MEASUREMENT_NOTIF_WIDE, iwl_mvm_temp_notif, true), + RX_HANDLER_GRP(PHY_OPS_GROUP, CT_KILL_NOTIFICATION, + iwl_mvm_ct_kill_notif, false), RX_HANDLER(TDLS_CHANNEL_SWITCH_NOTIFICATION, iwl_mvm_rx_tdls_notif, true), @@ -387,6 +389,7 @@ static const struct iwl_hcmd_names iwl_mvm_legacy_names[] = { */ static const struct iwl_hcmd_names iwl_mvm_phy_names[] = { HCMD_NAME(CMD_DTS_MEASUREMENT_TRIGGER_WIDE), + HCMD_NAME(CT_KILL_NOTIFICATION), HCMD_NAME(DTS_MEASUREMENT_NOTIF_WIDE), }; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c index 758d05a8c6aa..6ba391099d7e 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/tt.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/tt.c @@ -7,6 +7,7 @@ * * Copyright(c) 2013 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH + * Copyright(c) 2015 - 2016 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 @@ -33,7 +34,7 @@ * * Copyright(c) 2012 - 2014 Intel Corporation. All rights reserved. * Copyright(c) 2013 - 2014 Intel Mobile Communications GmbH - * Copyright(c) 2015 Intel Deutschland GmbH + * Copyright(c) 2015 - 2016 Intel Deutschland GmbH * All rights reserved. * * Redistribution and use in source and binary forms, with or without @@ -171,6 +172,24 @@ void iwl_mvm_temp_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) iwl_mvm_tt_temp_changed(mvm, temp); } +void iwl_mvm_ct_kill_notif(struct iwl_mvm *mvm, struct iwl_rx_cmd_buffer *rxb) +{ + struct iwl_rx_packet *pkt = rxb_addr(rxb); + struct ct_kill_notif *notif; + int len = iwl_rx_packet_payload_len(pkt); + + if (WARN_ON_ONCE(len != sizeof(*notif))) { + IWL_ERR(mvm, "Invalid CT_KILL_NOTIFICATION\n"); + return; + } + + notif = (struct ct_kill_notif *)pkt->data; + IWL_DEBUG_TEMP(mvm, "CT Kill notification temperature = %d\n", + notif->temperature); + + iwl_mvm_enter_ctkill(mvm); +} + static int iwl_mvm_get_temp_cmd(struct iwl_mvm *mvm) { struct iwl_dts_measurement_cmd cmd = { @@ -236,6 +255,12 @@ static void check_exit_ctkill(struct work_struct *work) tt = container_of(work, struct iwl_mvm_tt_mgmt, ct_kill_exit.work); mvm = container_of(tt, struct iwl_mvm, thermal_throttle); + if (iwl_mvm_is_tt_in_fw(mvm)) { + iwl_mvm_exit_ctkill(mvm); + + return; + } + duration = tt->params.ct_kill_duration; mutex_lock(&mvm->mutex); -- 2.20.1