From patchwork Sat Dec 4 15:49:41 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luca Coelho X-Patchwork-Id: 521916 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id DED95C433F5 for ; Sat, 4 Dec 2021 15:50:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1348098AbhLDPx0 (ORCPT ); Sat, 4 Dec 2021 10:53:26 -0500 Received: from paleale.coelho.fi ([176.9.41.70]:50502 "EHLO farmhouse.coelho.fi" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1348309AbhLDPxY (ORCPT ); Sat, 4 Dec 2021 10:53:24 -0500 Received: from 91-156-5-105.elisa-laajakaista.fi ([91.156.5.105] helo=kveik.ger.corp.intel.com) by farmhouse.coelho.fi with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.94.2) (envelope-from ) id 1mtXIT-0017qB-7E; Sat, 04 Dec 2021 17:49:57 +0200 From: Luca Coelho To: kvalo@codeaurora.org Cc: luca@coelho.fi, linux-wireless@vger.kernel.org Date: Sat, 4 Dec 2021 17:49:41 +0200 Message-Id: X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211204154944.914175-1-luca@coelho.fi> References: <20211204154944.914175-1-luca@coelho.fi> MIME-Version: 1.0 Subject: [PATCH 09/12] iwlwifi: implement reset flow for Bz devices Precedence: bulk List-ID: X-Mailing-List: linux-wireless@vger.kernel.org From: Johannes Berg 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 --- 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 72b5b69bfe5e..0febdcacbd42 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,