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[213.36.7.13]) by smtp.gmail.com with ESMTPSA id o10-20020a05600c510a00b004148a5e3188sm6066643wms.25.2024.03.28.10.39.37 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 Mar 2024 10:39:37 -0700 (PDT) Message-ID: <84f20fb5-5d48-419c-8eff-d7044afb81c0@freebox.fr> Date: Thu, 28 Mar 2024 18:36:48 +0100 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH v2 1/3] dt-bindings: net: wireless: ath10k: add qcom,no-msa-ready-indicator prop Content-Language: en-US From: Marc Gonzalez To: Kalle Valo , Jeff Johnson , ath10k Cc: wireless , DT , MSM , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Pierre-Hugues Husson , Arnaud Vrac , Bjorn Andersson , Konrad Dybcio , Jami Kettunen , Jeffrey Hugo References: In-Reply-To: The ath10k driver waits for an "MSA_READY" indicator to complete initialization. If the indicator is not received, then the device remains unusable. cf. ath10k_qmi_driver_event_work() Several msm8998-based devices are affected by this issue. Oddly, it seems safe to NOT wait for the indicator, and proceed immediately when QMI_EVENT_SERVER_ARRIVE. Jeff Johnson wrote: The feedback I received was "it might be ok to change all ath10k qmi to skip waiting for msa_ready", and it was pointed out that ath11k (and ath12k) do not wait for it. However with so many deployed devices, "might be ok" isn't a strong argument for changing the default behavior. Signed-off-by: Pierre-Hugues Husson Signed-off-by: Marc Gonzalez --- Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml index 9b3ef4bc37325..1680604cd1b7e 100644 --- a/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml +++ b/Documentation/devicetree/bindings/net/wireless/qcom,ath10k.yaml @@ -122,6 +122,13 @@ properties: Whether to skip executing an SCM call that reassigns the memory region ownership. + qcom,no-msa-ready-indicator: + type: boolean + description: + The driver waits for an MSA_READY indicator to complete init. + If the indicator is not received, interface remains unusable. + Pretending we received the indicator works around the issue. + qcom,smem-states: $ref: /schemas/types.yaml#/definitions/phandle-array description: State bits used by the AP to signal the WLAN Q6. 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[213.36.7.13]) by smtp.gmail.com with ESMTPSA id o10-20020a05600c510a00b004148a5e3188sm6066643wms.25.2024.03.28.10.39.38 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 Mar 2024 10:39:38 -0700 (PDT) Message-ID: <45448d42-bc48-4b9e-adca-59a47e0674f5@freebox.fr> Date: Thu, 28 Mar 2024 18:38:15 +0100 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH v2 2/3] wifi: ath10k: fake missing MSA_READY indicator Content-Language: en-US From: Marc Gonzalez To: Kalle Valo , Jeff Johnson , ath10k Cc: wireless , DT , MSM , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Pierre-Hugues Husson , Arnaud Vrac , Bjorn Andersson , Konrad Dybcio , Jami Kettunen , Jeffrey Hugo References: In-Reply-To: The ath10k driver waits for an "MSA_READY" indicator to complete initialization. If the indicator is not received, then the device remains unusable. Several msm8998-based devices are affected by this issue. Oddly, it seems safe to NOT wait for the indicator, and proceed immediately when QMI_EVENT_SERVER_ARRIVE. fw_version 0x100204b2 fw_build_timestamp 2019-09-04 03:01 fw_build_id QC_IMAGE_VERSION_STRING=WLAN.HL.1.0-01202-QCAHLSWMTPLZ-1.221523.2 Jeff Johnson wrote: The feedback I received was "it might be ok to change all ath10k qmi to skip waiting for msa_ready", and it was pointed out that ath11k (and ath12k) do not wait for it. However with so many deployed devices, "might be ok" isn't a strong argument for changing the default behavior. Signed-off-by: Pierre-Hugues Husson Signed-off-by: Marc Gonzalez --- drivers/net/wireless/ath/ath10k/qmi.c | 7 +++++++ drivers/net/wireless/ath/ath10k/qmi.h | 1 + 2 files changed, 8 insertions(+) diff --git a/drivers/net/wireless/ath/ath10k/qmi.c b/drivers/net/wireless/ath/ath10k/qmi.c index 38e939f572a9e..50e28fa37e430 100644 --- a/drivers/net/wireless/ath/ath10k/qmi.c +++ b/drivers/net/wireless/ath/ath10k/qmi.c @@ -1040,6 +1040,10 @@ static void ath10k_qmi_driver_event_work(struct work_struct *work) switch (event->type) { case ATH10K_QMI_EVENT_SERVER_ARRIVE: ath10k_qmi_event_server_arrive(qmi); + if (qmi->fake_msa_ready_indicator) { + ath10k_dbg(ar, ATH10K_DBG_QMI, "qmi HACK fake msa_ready indicator"); + ath10k_qmi_event_msa_ready(qmi); + } break; case ATH10K_QMI_EVENT_SERVER_EXIT: ath10k_qmi_event_server_exit(qmi); @@ -1077,6 +1081,9 @@ int ath10k_qmi_init(struct ath10k *ar, u32 msa_size) if (of_property_read_bool(dev->of_node, "qcom,msa-fixed-perm")) qmi->msa_fixed_perm = true; + if (of_property_read_bool(dev->of_node, "qcom,no-msa-ready-indicator")) + qmi->fake_msa_ready_indicator = true; + ret = qmi_handle_init(&qmi->qmi_hdl, WLFW_BDF_DOWNLOAD_REQ_MSG_V01_MAX_MSG_LEN, &ath10k_qmi_ops, qmi_msg_handler); diff --git a/drivers/net/wireless/ath/ath10k/qmi.h b/drivers/net/wireless/ath/ath10k/qmi.h index 89464239fe96a..c68526aad8946 100644 --- a/drivers/net/wireless/ath/ath10k/qmi.h +++ b/drivers/net/wireless/ath/ath10k/qmi.h @@ -107,6 +107,7 @@ struct ath10k_qmi { char fw_build_timestamp[MAX_TIMESTAMP_LEN + 1]; struct ath10k_qmi_cal_data cal_data[MAX_NUM_CAL_V01]; bool msa_fixed_perm; + bool fake_msa_ready_indicator; enum ath10k_qmi_state state; }; From patchwork Thu Mar 28 17:39:13 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Marc Gonzalez X-Patchwork-Id: 13609259 X-Patchwork-Delegate: kvalo@adurom.com Received: from mail-wm1-f48.google.com (mail-wm1-f48.google.com [209.85.128.48]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id F1502126F19 for ; 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[213.36.7.13]) by smtp.gmail.com with ESMTPSA id o10-20020a05600c510a00b004148a5e3188sm6066643wms.25.2024.03.28.10.39.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 28 Mar 2024 10:39:39 -0700 (PDT) Message-ID: <5cdad89c-282a-4df5-a286-b8404bc4dd81@freebox.fr> Date: Thu, 28 Mar 2024 18:39:13 +0100 Precedence: bulk X-Mailing-List: linux-wireless@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: [PATCH v2 3/3] arm64: dts: qcom: msm8998: set qcom,no-msa-ready-indicator for wifi Content-Language: en-US From: Marc Gonzalez To: Kalle Valo , Jeff Johnson , ath10k Cc: wireless , DT , MSM , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Pierre-Hugues Husson , Arnaud Vrac , Bjorn Andersson , Konrad Dybcio , Jami Kettunen , Jeffrey Hugo References: In-Reply-To: The ath10k driver waits for an "MSA_READY" indicator to complete initialization. If the indicator is not received, then the device remains unusable. cf. ath10k_qmi_driver_event_work() Several msm8998-based devices are affected by this issue. Oddly, it seems safe to NOT wait for the indicator, and proceed immediately when QMI_EVENT_SERVER_ARRIVE. Jeff Johnson wrote: The feedback I received was "it might be ok to change all ath10k qmi to skip waiting for msa_ready", and it was pointed out that ath11k (and ath12k) do not wait for it. However with so many deployed devices, "might be ok" isn't a strong argument for changing the default behavior. cf. also https://wiki.postmarketos.org/wiki/Qualcomm_Snapdragon_835_(MSM8998)#WLAN Signed-off-by: Marc Gonzalez --- arch/arm64/boot/dts/qcom/msm8998.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/qcom/msm8998.dtsi b/arch/arm64/boot/dts/qcom/msm8998.dtsi index 026b6b97785b5..681a80f4dc9db 100644 --- a/arch/arm64/boot/dts/qcom/msm8998.dtsi +++ b/arch/arm64/boot/dts/qcom/msm8998.dtsi @@ -3185,6 +3185,7 @@ wifi: wifi@18800000 { iommus = <&anoc2_smmu 0x1900>, <&anoc2_smmu 0x1901>; qcom,snoc-host-cap-8bit-quirk; + qcom,no-msa-ready-indicator; }; }; };