From bdd940613b4d0daf09a431096bf7d63aa55dee16 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Wed, 13 Sep 2023 14:56:43 +0300 Subject: [PATCH] wifi: iwlwifi: mvm: make "pldr_sync" mode effective If the device initialized with ME active, this would indeed work, since the NVM information would be obtained from ME. However, in the much more likely case that ME isn't active and the firmware takes actions requiring the sync, this was not working correctly when the firmware is only run at init to obtain NVM data, since mac80211 isn't even initialized. Fix this by moving the 'pldr_sync' handling to a different place. Signed-off-by: Johannes Berg Signed-off-by: Gregory Greenman Link: https://lore.kernel.org/r/20230913145231.45a94d480e56.Id9277f1df6a63ab0dfca0d0c0f448c759e1b8e73@changeid Signed-off-by: Johannes Berg --- drivers/net/wireless/intel/iwlwifi/mvm/fw.c | 20 +++++++++++++------ .../net/wireless/intel/iwlwifi/mvm/mac80211.c | 12 +---------- drivers/net/wireless/intel/iwlwifi/mvm/ops.c | 3 +++ 3 files changed, 18 insertions(+), 17 deletions(-) diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c index f682c9067abb4..567b02754a438 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/fw.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/fw.c @@ -583,6 +583,7 @@ static int iwl_run_unified_mvm_ucode(struct iwl_mvm *mvm) static const u16 init_complete[] = { INIT_COMPLETE_NOTIF, }; + u32 sb_cfg; int ret; if (mvm->trans->cfg->tx_with_siso_diversity) @@ -592,6 +593,12 @@ static int iwl_run_unified_mvm_ucode(struct iwl_mvm *mvm) mvm->rfkill_safe_init_done = false; + sb_cfg = iwl_read_umac_prph(mvm->trans, SB_MODIFY_CFG_FLAG); + /* if needed, we'll reset this on our way out later */ + mvm->pldr_sync = !(sb_cfg & SB_CFG_RESIDES_IN_OTP_MASK); + if (mvm->pldr_sync && iwl_mei_pldr_req()) + return -EBUSY; + iwl_init_notification_wait(&mvm->notif_wait, &init_wait, init_complete, @@ -605,6 +612,13 @@ static int iwl_run_unified_mvm_ucode(struct iwl_mvm *mvm) ret = iwl_mvm_load_ucode_wait_alive(mvm, IWL_UCODE_REGULAR); if (ret) { IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret); + + /* if we needed reset then fail here, but notify and remove */ + if (mvm->pldr_sync) { + iwl_mei_alive_notif(false); + iwl_trans_pcie_remove(mvm->trans, true); + } + goto error; } iwl_dbg_tlv_time_point(&mvm->fwrt, IWL_FW_INI_TIME_POINT_AFTER_ALIVE, @@ -1502,7 +1516,6 @@ int iwl_mvm_up(struct iwl_mvm *mvm) struct ieee80211_channel *chan; struct cfg80211_chan_def chandef; struct ieee80211_supported_band *sband = NULL; - u32 sb_cfg; lockdep_assert_held(&mvm->mutex); @@ -1510,11 +1523,6 @@ int iwl_mvm_up(struct iwl_mvm *mvm) if (ret) return ret; - sb_cfg = iwl_read_umac_prph(mvm->trans, SB_MODIFY_CFG_FLAG); - mvm->pldr_sync = !(sb_cfg & SB_CFG_RESIDES_IN_OTP_MASK); - if (mvm->pldr_sync && iwl_mei_pldr_req()) - return -EBUSY; - ret = iwl_mvm_load_rt_fw(mvm); if (ret) { IWL_ERR(mvm, "Failed to start RT ucode: %d\n", ret); diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c index a4ac178d76b37..93223f8c07b48 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c @@ -1169,18 +1169,8 @@ int iwl_mvm_mac_start(struct ieee80211_hw *hw) for (retry = 0; retry <= max_retry; retry++) { ret = __iwl_mvm_mac_start(mvm); - if (!ret) - break; - - /* - * In PLDR sync PCI re-enumeration is needed. no point to retry - * mac start before that. - */ - if (mvm->pldr_sync) { - iwl_mei_alive_notif(false); - iwl_trans_pcie_remove(mvm->trans, true); + if (!ret || mvm->pldr_sync) break; - } IWL_ERR(mvm, "mac start retry %d\n", retry); } diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c index d4983abd9f971..1c21a313f8f1e 100644 --- a/drivers/net/wireless/intel/iwlwifi/mvm/ops.c +++ b/drivers/net/wireless/intel/iwlwifi/mvm/ops.c @@ -790,6 +790,9 @@ get_nvm_from_fw: if (ret) IWL_ERR(mvm, "Failed to run INIT ucode: %d\n", ret); + /* no longer need this regardless of failure or not */ + mvm->pldr_sync = false; + return ret; } -- 2.30.2