From de0c2cdcb7eb8e08f3886b433277472d97af0f6e Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Tue, 23 Jan 2024 20:08:14 +0200 Subject: [PATCH] wifi: iwlwifi: mvm: limit EHT 320 MHz MCS for STEP URM If the STEP (the interface between MAC and PHY) is in URM (a lower speed mode) then we cannot use 320 MHz MCS > 9. Therefore, limit the MCS in our capabilities in this case. Note that this also limits the TX/rate scaling since that takes both TX and RX capabilities into account. Signed-off-by: Johannes Berg Reviewed-by: Gregory Greenman Signed-off-by: Miri Korenblit Link: https://msgid.link/20240123200528.02bae683b7fc.Id5efbb71d45da02c8c4e211d20396637ddd44da8@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c | 5 +++++ drivers/net/wireless/intel/iwlwifi/iwl-prph.h | 3 +++ drivers/net/wireless/intel/iwlwifi/iwl-trans.h | 4 +++- drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 5 +++++ 4 files changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c index 67c7cda073e8d..8e6ce484db87a 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c +++ b/drivers/net/wireless/intel/iwlwifi/iwl-nvm-parse.c @@ -1061,6 +1061,11 @@ iwl_nvm_fixup_sband_iftd(struct iwl_trans *trans, ~IEEE80211_HE_PHY_CAP7_STBC_RX_ABOVE_80MHZ; } + if (trans->step_urm) { + iftype_data->eht_cap.eht_mcs_nss_supp.bw._320.rx_tx_mcs11_max_nss = 0; + iftype_data->eht_cap.eht_mcs_nss_supp.bw._320.rx_tx_mcs13_max_nss = 0; + } + if (trans->no_160) iftype_data->he_cap.he_cap_elem.phy_cap_info[0] &= ~IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G; diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-prph.h b/drivers/net/wireless/intel/iwlwifi/iwl-prph.h index dd32c287b9836..c1c7d44f421ba 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-prph.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-prph.h @@ -374,6 +374,9 @@ enum { #define CNVR_SCU_SD_REGS_SD_REG_ACTIVE_VDIG_MIRROR 0xA29938 #define CNVI_SCU_SEQ_DATA_DW9 0xA27488 +#define CNVI_PMU_STEP_FLOW 0xA2D588 +#define CNVI_PMU_STEP_FLOW_FORCE_URM BIT(2) + #define PREG_AUX_BUS_WPROT_0 0xA04CC0 /* device family 9000 WPROT register */ diff --git a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h index e3b76c682d769..3047ffc244158 100644 --- a/drivers/net/wireless/intel/iwlwifi/iwl-trans.h +++ b/drivers/net/wireless/intel/iwlwifi/iwl-trans.h @@ -1070,6 +1070,7 @@ struct iwl_trans_txqs { * @invalid_tx_cmd: invalid TX command buffer * @reduced_cap_sku: reduced capability supported SKU * @no_160: device not supporting 160 MHz + * @step_urm: STEP is in URM, no support for MCS>9 in 320 MHz */ struct iwl_trans { bool csme_own; @@ -1093,7 +1094,8 @@ struct iwl_trans { char hw_id_str[52]; u32 sku_id[3]; bool reduced_cap_sku; - u8 no_160; + u8 no_160:1, step_urm:1; + u8 rx_mpdu_cmd, rx_mpdu_cmd_hdr_size; bool pm_support; diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index 1252084662c6f..b6acf4ade552f 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -677,6 +677,11 @@ static int iwl_run_unified_mvm_ucode(struct iwl_mvm *mvm) iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_AFTER_ALIVE, NULL); + if (mvm->trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_BZ) + mvm->trans->step_urm = !!(iwl_read_umac_prph(mvm->trans, + CNVI_PMU_STEP_FLOW) & + CNVI_PMU_STEP_FLOW_FORCE_URM); + /* Send init config command to mark that we are sending NVM access * commands */ -- 2.30.2