From 23a392a44a3cabf43515f7601373a2094ac5f747 Mon Sep 17 00:00:00 2001 From: Johannes Berg Date: Sat, 4 Dec 2021 17:49:41 +0200 Subject: [PATCH] iwlwifi: implement reset flow for Bz devices On Bz devices, UREG_DOORBELL_TO_ISR6_NMI_BIT no longer actually triggers an NMI. So instead of setting BIT(0) | BIT(1) for the reset flow, we need to just set BIT(1) and then force the NMI in the new way. Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20211204174546.6b56e7ee1773.I71cba66e17cc0daabc5ad7abd88763674b625c82@changeid Signed-off-by: Luca Coelho --- drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c index 72b5b69bfe5e9..0febdcacbd429 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c @@ -105,9 +105,12 @@ static void iwl_trans_pcie_fw_reset_handshake(struct iwl_trans *trans) if (trans->trans_cfg->device_family < IWL_DEVICE_FAMILY_AX210) iwl_write_umac_prph(trans, UREG_NIC_SET_NMI_DRIVER, UREG_NIC_SET_NMI_DRIVER_RESET_HANDSHAKE); - else + else if (trans->trans_cfg->device_family == IWL_DEVICE_FAMILY_AX210) iwl_write_umac_prph(trans, UREG_DOORBELL_TO_ISR6, UREG_DOORBELL_TO_ISR6_RESET_HANDSHAKE); + else + iwl_write32(trans, CSR_DOORBELL_VECTOR, + UREG_DOORBELL_TO_ISR6_RESET_HANDSHAKE); /* wait 200ms */ ret = wait_event_timeout(trans_pcie->fw_reset_waitq,