From: Roee Goldfiner Date: Sun, 17 Oct 2021 13:25:54 +0000 (+0300) Subject: iwlwifi: BZ Family SW reset support X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=1b6598c3dc35c631aa16279bb17f293c1b5c4ce8;p=linux.git iwlwifi: BZ Family SW reset support Previously added BZ reset wasn't taking into account the call to iwl_trans_pcie_sw_reset which used a pre-BZ logic to reset the device - enabling iwl_trans_pcie_sw_reset to support BZ family made this reset redundant. MAC_ACCESS clear shouldn't be called here but only when calling _iwl_trans_pcie_stop_device which now support also BZ family. Signed-off-by: Roee Goldfiner Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20211017162352.648931fe07e2.Ibf30f9b8e70536da93c4a574ace33d325d3f8da4@changeid Signed-off-by: Luca Coelho --- diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c index a4aad24abb90e..d7e11cf8627ac 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans-gen2.c @@ -163,18 +163,6 @@ void _iwl_trans_pcie_gen2_stop_device(struct iwl_trans *trans) else iwl_pcie_ctxt_info_free(trans); - /* Make sure (redundant) we've released our request to stay awake */ - if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) - iwl_clear_bit(trans, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_BZ_MAC_ACCESS_REQ); - else - iwl_clear_bit(trans, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); - - if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) { - iwl_set_bit(trans, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_SW_RESET); - } /* Stop the device, and put it in low power state */ iwl_pcie_gen2_apm_stop(trans, false); diff --git a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c index 22393b724e985..12a402be2e06e 100644 --- a/drivers/net/wireless/intel/iwlwifi/pcie/trans.c +++ b/drivers/net/wireless/intel/iwlwifi/pcie/trans.c @@ -129,7 +129,12 @@ out: static void iwl_trans_pcie_sw_reset(struct iwl_trans *trans) { /* Reset entire device - do controller reset (results in SHRD_HW_RST) */ - iwl_set_bit(trans, CSR_RESET, CSR_RESET_REG_FLAG_SW_RESET); + if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) + iwl_set_bit(trans, CSR_GP_CNTRL, + CSR_GP_CNTRL_REG_FLAG_SW_RESET); + else + iwl_set_bit(trans, CSR_RESET, + CSR_RESET_REG_FLAG_SW_RESET); usleep_range(5000, 6000); } @@ -1209,8 +1214,12 @@ static void _iwl_trans_pcie_stop_device(struct iwl_trans *trans) } /* Make sure (redundant) we've released our request to stay awake */ - iwl_clear_bit(trans, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); + if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) + iwl_clear_bit(trans, CSR_GP_CNTRL, + CSR_GP_CNTRL_REG_FLAG_BZ_MAC_ACCESS_REQ); + else + iwl_clear_bit(trans, CSR_GP_CNTRL, + CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); /* Stop the device, and put it in low power state */ iwl_pcie_apm_stop(trans, false); @@ -2141,9 +2150,12 @@ static void iwl_trans_pcie_release_nic_access(struct iwl_trans *trans) if (trans_pcie->cmd_hold_nic_awake) goto out; - - __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, - CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); + if (trans->trans_cfg->device_family >= IWL_DEVICE_FAMILY_BZ) + __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, + CSR_GP_CNTRL_REG_FLAG_BZ_MAC_ACCESS_REQ); + else + __iwl_trans_pcie_clear_bit(trans, CSR_GP_CNTRL, + CSR_GP_CNTRL_REG_FLAG_MAC_ACCESS_REQ); /* * Above we read the CSR_GP_CNTRL register, which will flush * any previous writes, but we need the write that clears the