From nobody Fri Dec 19 04:30:55 2025 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 E83EAC4332F for ; Sat, 12 Nov 2022 20:07:36 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234964AbiKLUHe (ORCPT ); Sat, 12 Nov 2022 15:07:34 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35716 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234905AbiKLUH0 (ORCPT ); Sat, 12 Nov 2022 15:07:26 -0500 Received: from mail-io1-xd2c.google.com (mail-io1-xd2c.google.com [IPv6:2607:f8b0:4864:20::d2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 26ED315A21 for ; Sat, 12 Nov 2022 12:07:24 -0800 (PST) Received: by mail-io1-xd2c.google.com with SMTP id c7so3028884iof.13 for ; Sat, 12 Nov 2022 12:07:24 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=aloX78xpt1ZUhhk2B4r0yIdFbVyMyxb0348xtj6qFfc=; b=TT3fdj5lcRdlBtkMD5vkH+ZZoUO3bL/WA3FBAh0BI7eO+orVVn1dNt7qAlAegJ0Lss UemR8GUQyxIv6pQufwfd6UaPhavZRdvi5PuzA+bLQD8c0BQ6fXIN0qqeIdt6J4ZGj+X2 wisjKxowPvttRKTgiyUy0zTgxcSrpgXShkJdmGUIzojI84JPdhWW8f3LMw5ZZiy+rbgD 5+x7Yzr9FaF8OTiZplpQB9FKZaWoHRgzKN+sPJvtgSwoPK36TE0xHYB3qBjORbGKZj3n j4F4BTi/qO0yIJamHJMEEJDHFLAcxb97dlxm6RtK2OaRVmMV0GFoqx4kgNT0q3PGxS2p xGeQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=aloX78xpt1ZUhhk2B4r0yIdFbVyMyxb0348xtj6qFfc=; b=UCS5aLrquV8gBpRJUv5yxhdE6jBwv6tSb/xOjF3FQA9j0KUIn+3L110ijBAFtIjzx7 t/RjafJrEkO+ybe1EbITeC01ubMyLYNYQ+RceAhhTgAbOngIFH4O5KPBtDAM7Vh3v89s HI7w4zEicuw5SoY+bt2Ow1Yg9Sx1F208nmodwEdeIzEia/6ozq4DFrMQlmcMVeVLPebp RmZ9sYOfzPCVbxPtPgKoqM5tizlu/MhTlHHoaGNF3KQfNhhj0rIlTQKk5NSGvQKj5EMj G5QZ/JsflHLT2FntDJEmBtYBoEZo3cPWNdo/bPVLUNHgFKQKfYiWK/nIsVlWQ4JAKME8 NnTw== X-Gm-Message-State: ANoB5pn0sOVEWzmv4DPNr8AzVNmja+V+raW4FJbSqLiyAFOnzTYgAzDi +gbRPEWLTHUgX7IA8u1zECNo2A== X-Google-Smtp-Source: AA0mqf6APkEFWbXx0Gjx1yZuFZlNO85CoDgOGY5sIPjDA9FD9GgcyhdrRotiIbkSLtIq/1ZHGINVDw== X-Received: by 2002:a6b:6318:0:b0:6ca:6cbb:cb83 with SMTP id p24-20020a6b6318000000b006ca6cbbcb83mr3221089iog.44.1668283643477; Sat, 12 Nov 2022 12:07:23 -0800 (PST) Received: from presto.localdomain ([98.61.227.136]) by smtp.gmail.com with ESMTPSA id j28-20020a02cb1c000000b00363dee286edsm2036870jap.60.2022.11.12.12.07.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Nov 2022 12:07:22 -0800 (PST) From: Alex Elder To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: andersson@kernel.org, konrad.dybcio@linaro.org, agross@kernel.org, elder@kernel.org, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next 1/5] dt-bindings: net: qcom,ipa: deprecate modem-init Date: Sat, 12 Nov 2022 14:07:13 -0600 Message-Id: <20221112200717.1533622-2-elder@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221112200717.1533622-1-elder@linaro.org> References: <20221112200717.1533622-1-elder@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" GSI firmware for IPA must be loaded during initialization, either by the AP or by the modem. The loader is currently specified based on whether the Boolean modem-init property is present. Instead, use a new property with an enumerated value to indicate explicitly how GSI firmware gets loaded. With this in place, a third approach can be added in an upcoming patch. The new qcom,gsi-loader property has two defined values: - self: The AP loads GSI firmware - modem: The modem loads GSI firmware The modem-init property must still be supported, but is now marked deprecated. Signed-off-by: Alex Elder --- .../devicetree/bindings/net/qcom,ipa.yaml | 59 +++++++++++++++---- 1 file changed, 46 insertions(+), 13 deletions(-) diff --git a/Documentation/devicetree/bindings/net/qcom,ipa.yaml b/Document= ation/devicetree/bindings/net/qcom,ipa.yaml index e752b76192df0..0dfd6c721e045 100644 --- a/Documentation/devicetree/bindings/net/qcom,ipa.yaml +++ b/Documentation/devicetree/bindings/net/qcom,ipa.yaml @@ -124,12 +124,22 @@ properties: - const: ipa-clock-enabled-valid - const: ipa-clock-enabled =20 + qcom,gsi-loader: + enum: + - self + - modem + description: + This indicates how GSI firmware should be loaded. If the AP loads + and validates GSI firmware, this property has value "self". If the + modem does this, this property has value "modem". + modem-init: + deprecated: true type: boolean description: - If present, it indicates that the modem is responsible for - performing early IPA initialization, including loading and - validating firwmare used by the GSI. + This is the older (deprecated) way of indicating how GSI firmware + should be loaded. If present, the modem loads GSI firmware; if + absent, the AP loads GSI firmware. =20 memory-region: maxItems: 1 @@ -155,15 +165,36 @@ required: - interconnects - qcom,smem-states =20 -# If modem-init is not present, the AP loads GSI firmware, and -# memory-region must be specified -if: - not: - required: - - modem-init -then: - required: - - memory-region +allOf: + # If qcom,gsi-loader is present, modem-init must not be present + - if: + required: + - qcom,gsi-loader + then: + properties: + modem-init: false + + # If qcom,gsi-loader is "self", the AP loads GSI firmware, and + # memory-region must be specified + if: + properties: + qcom,gsi-loader: + contains: + const: self + then: + required: + - memory-region + else: + # If qcom,gsi-loader is not present, we use deprecated behavior. + # If modem-init is not present, the AP loads GSI firmware, and + # memory-region must be specified. + if: + not: + required: + - modem-init + then: + required: + - memory-region =20 additionalProperties: false =20 @@ -196,7 +227,9 @@ examples: ipa@1e40000 { compatible =3D "qcom,sdm845-ipa"; =20 - modem-init; + qcom,gsi-loader =3D "self"; + memory-region =3D <&ipa_fw_mem>; + firmware-name =3D "qcom/sc7180-trogdor/modem-nolte/mba.mbn= "; =20 iommus =3D <&apps_smmu 0x720 0x3>; reg =3D <0x1e40000 0x7000>, --=20 2.34.1 From nobody Fri Dec 19 04:30:55 2025 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 8012BC4332F for ; Sat, 12 Nov 2022 20:07:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235060AbiKLUHi (ORCPT ); Sat, 12 Nov 2022 15:07:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35718 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234928AbiKLUH0 (ORCPT ); Sat, 12 Nov 2022 15:07:26 -0500 Received: from mail-io1-xd35.google.com (mail-io1-xd35.google.com [IPv6:2607:f8b0:4864:20::d35]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 99ED41277D for ; 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charset="utf-8" The GSI layer used for IPA requires firmware to be loaded. Currently either the AP or the modem loads the firmware, distinguished by whether the "modem-init" Device Tree property is defined. Some newer systems implement a third option. In preparation for that, encapsulate the code that determines how the GSI firmware gets loaded in a new function, ipa_firmware_loader(). Signed-off-by: Alex Elder --- drivers/net/ipa/ipa_main.c | 39 ++++++++++++++++++++++++++++++-------- 1 file changed, 31 insertions(+), 8 deletions(-) diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c index ebb6c9b311eb9..9e43b79d233e9 100644 --- a/drivers/net/ipa/ipa_main.c +++ b/drivers/net/ipa/ipa_main.c @@ -81,6 +81,19 @@ /* Divider for 19.2 MHz crystal oscillator clock to get common timer clock= */ #define IPA_XO_CLOCK_DIVIDER 192 /* 1 is subtracted where used */ =20 +/** + * enum ipa_firmware_loader: How GSI firmware gets loaded + * + * @IPA_LOADER_DEFER: System not ready; try again later + * @IPA_LOADER_SELF: AP loads GSI firmware + * @IPA_LOADER_MODEM: Modem loads GSI firmware, signals when done + */ +enum ipa_firmware_loader { + IPA_LOADER_DEFER, + IPA_LOADER_SELF, + IPA_LOADER_MODEM, +}; + /** * ipa_setup() - Set up IPA hardware * @ipa: IPA pointer @@ -696,6 +709,18 @@ static void ipa_validate_build(void) BUILD_BUG_ON(!ipa_aggr_granularity_val(IPA_AGGR_GRANULARITY)); } =20 +static enum ipa_firmware_loader ipa_firmware_loader(struct device *dev) +{ + if (of_property_read_bool(dev->of_node, "modem-init")) + return IPA_LOADER_MODEM; + + /* We need Trust Zone to load firmware; make sure it's available */ + if (qcom_scm_is_available()) + return IPA_LOADER_SELF; + + return IPA_LOADER_DEFER; +} + /** * ipa_probe() - IPA platform driver probe function * @pdev: Platform device pointer @@ -722,9 +747,9 @@ static void ipa_validate_build(void) static int ipa_probe(struct platform_device *pdev) { struct device *dev =3D &pdev->dev; + enum ipa_firmware_loader loader; const struct ipa_data *data; struct ipa_power *power; - bool modem_init; struct ipa *ipa; int ret; =20 @@ -747,11 +772,9 @@ static int ipa_probe(struct platform_device *pdev) return -EINVAL; } =20 - /* If we need Trust Zone, make sure it's available */ - modem_init =3D of_property_read_bool(dev->of_node, "modem-init"); - if (!modem_init) - if (!qcom_scm_is_available()) - return -EPROBE_DEFER; + loader =3D ipa_firmware_loader(dev); + if (loader =3D=3D IPA_LOADER_DEFER) + return -EPROBE_DEFER; =20 /* The clock and interconnects might not be ready when we're * probed, so might return -EPROBE_DEFER. @@ -796,7 +819,7 @@ static int ipa_probe(struct platform_device *pdev) if (ret) goto err_endpoint_exit; =20 - ret =3D ipa_smp2p_init(ipa, modem_init); + ret =3D ipa_smp2p_init(ipa, loader =3D=3D IPA_LOADER_MODEM); if (ret) goto err_table_exit; =20 @@ -815,7 +838,7 @@ static int ipa_probe(struct platform_device *pdev) * call to ipa_setup() when it has finished. In that case we're * done here. */ - if (modem_init) + if (loader =3D=3D IPA_LOADER_MODEM) goto done; =20 /* Otherwise we need to load the firmware and have Trust Zone validate --=20 2.34.1 From nobody Fri Dec 19 04:30:55 2025 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 4F3E0C4332F for ; Sat, 12 Nov 2022 20:07:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235072AbiKLUHl (ORCPT ); Sat, 12 Nov 2022 15:07:41 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35710 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234959AbiKLUH1 (ORCPT ); Sat, 12 Nov 2022 15:07:27 -0500 Received: from mail-io1-xd35.google.com (mail-io1-xd35.google.com [IPv6:2607:f8b0:4864:20::d35]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D643411A25 for ; Sat, 12 Nov 2022 12:07:26 -0800 (PST) Received: by mail-io1-xd35.google.com with SMTP id e189so5749213iof.1 for ; Sat, 12 Nov 2022 12:07:26 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=QmJK2z6YewxghveqGIb9UQBF6OMvTjY+OevUyUnH0xk=; b=qvii5+YfRDQV27AwF5yXB+bnAxlzBNOOdUYYa7xFW6WdfwigOKyjOcCHQsCgakTjDL CNqJRFb5amTb6a2JWTIc9XauQSvZ7IkVA+8sRVfu7WUax+6QvchktbNfBl1F2qaErOxh Ey51lKVbJINQ/MsI7Ex7U5qcdqNO0tWea6LlikYU+YAzhaW0JHnCMT8hVNErVCDwlW0y BtFulbBZGuMu6ZeP3EpBgxLuL3DHUZM3bMR+0TRlP/MFhYotrKkRPqeJw8SbNOYFXU71 et2euDBzpAx4Ld1pFNXvjCGdyGB02RMqSpuad9qMblCDto8WyZFm2UB4sljofOTulyKM Af+A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=QmJK2z6YewxghveqGIb9UQBF6OMvTjY+OevUyUnH0xk=; b=OY42zbuuzkGQmj0oi1iIeeiG1kpON0DGoZM1FxipX3eLpG4s4GJb0wA0oi+/B0LfLC 77dM6VmeY/bsZOuzM/B2QyT3edWYLXxwA2J7CfEnZ6r6dcBlWdidxcgopP3lYT9Cx+/U Agnr8LOWzpF7K/RhggzL3YTNHti9x8jCQ7S9z4nM8WNNAaa1vWqPnGVkP/OE6lQDndTq 4NT0l5Ir4qZlrpWuunb5lj0DBCC62mKrdEZL8J+WAeG7iQeGc7fEhXQqRj0hjrG6aIBg Y/umhKviSegtfX72ql6c8F5/YO93b4nhx6jxO/kubSPNPhRh04enImDDHR0/vWY3Fv0y ylFA== X-Gm-Message-State: ANoB5pm49ce8awdtWZOY8zQeas9P975O37Ng2IOEvjDW/NCM4FYjrPiA DdGVFMaGDx4o5bZLMpaDJiFguA== X-Google-Smtp-Source: AA0mqf6+8pKCS6vAuM96tHZdyW588YSQAUx4YXAwXL4i6TE107C0kcbMKvSqcJuUlIukNPTpWlrqVw== X-Received: by 2002:a02:cd34:0:b0:363:c1cc:ce75 with SMTP id h20-20020a02cd34000000b00363c1ccce75mr3164137jaq.125.1668283646526; Sat, 12 Nov 2022 12:07:26 -0800 (PST) Received: from presto.localdomain ([98.61.227.136]) by smtp.gmail.com with ESMTPSA id j28-20020a02cb1c000000b00363dee286edsm2036870jap.60.2022.11.12.12.07.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Nov 2022 12:07:25 -0800 (PST) From: Alex Elder To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: andersson@kernel.org, konrad.dybcio@linaro.org, agross@kernel.org, elder@kernel.org, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next 3/5] net: ipa: introduce "qcom,gsi-loader" property Date: Sat, 12 Nov 2022 14:07:15 -0600 Message-Id: <20221112200717.1533622-4-elder@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221112200717.1533622-1-elder@linaro.org> References: <20221112200717.1533622-1-elder@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Introduce a new way of specifying how the GSI firmware gets loaded for IPA. Currently, this is indicated by the presence or absence of the Boolean "modem-init" Device Tree property. The new property must have a value--either "self" or "modem"--which indicates whether the AP or modem is the GSI firmware loader, respectively. For legacy systems, the new property will not exist, and the "modem-init" property will be used. For newer systems, the "qcom,gsi-loader" property *must* exist, and must have one of the two prescribed values. It is an error to have both properties defined, and it is an error for the new property to have an unrecognized value. Signed-off-by: Alex Elder --- drivers/net/ipa/ipa_main.c | 44 ++++++++++++++++++++++++++++++++------ 1 file changed, 37 insertions(+), 7 deletions(-) diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c index 9e43b79d233e9..214e524dce795 100644 --- a/drivers/net/ipa/ipa_main.c +++ b/drivers/net/ipa/ipa_main.c @@ -87,11 +87,13 @@ * @IPA_LOADER_DEFER: System not ready; try again later * @IPA_LOADER_SELF: AP loads GSI firmware * @IPA_LOADER_MODEM: Modem loads GSI firmware, signals when done + * @IPA_LOADER_INVALID: GSI firmware loader specification is invalid */ enum ipa_firmware_loader { IPA_LOADER_DEFER, IPA_LOADER_SELF, IPA_LOADER_MODEM, + IPA_LOADER_INVALID, }; =20 /** @@ -711,9 +713,37 @@ static void ipa_validate_build(void) =20 static enum ipa_firmware_loader ipa_firmware_loader(struct device *dev) { - if (of_property_read_bool(dev->of_node, "modem-init")) + bool modem_init; + const char *str; + int ret; + + /* Look up the old and new properties by name */ + modem_init =3D of_property_read_bool(dev->of_node, "modem-init"); + ret =3D of_property_read_string(dev->of_node, "qcom,gsi-loader", &str); + + /* If the new property doesn't exist, it's legacy behavior */ + if (ret =3D=3D -EINVAL) { + if (modem_init) + return IPA_LOADER_MODEM; + goto out_self; + } + + /* Any other error on the new property means it's poorly defined */ + if (ret) + return IPA_LOADER_INVALID; + + /* New property value exists; if old one does too, that's invalid */ + if (modem_init) + return IPA_LOADER_INVALID; + + /* Modem loads GSI firmware for "modem" */ + if (!strcmp(str, "modem")) return IPA_LOADER_MODEM; =20 + /* Any value other than "self" is an error */ + if (strcmp(str, "self")) + return IPA_LOADER_INVALID; +out_self: /* We need Trust Zone to load firmware; make sure it's available */ if (qcom_scm_is_available()) return IPA_LOADER_SELF; @@ -773,6 +803,8 @@ static int ipa_probe(struct platform_device *pdev) } =20 loader =3D ipa_firmware_loader(dev); + if (loader =3D=3D IPA_LOADER_INVALID) + return -EINVAL; if (loader =3D=3D IPA_LOADER_DEFER) return -EPROBE_DEFER; =20 @@ -834,20 +866,18 @@ static int ipa_probe(struct platform_device *pdev) =20 dev_info(dev, "IPA driver initialized"); =20 - /* If the modem is doing early initialization, it will trigger a - * call to ipa_setup() when it has finished. In that case we're - * done here. + /* If the modem is loading GSI firmware, it will trigger a call to + * ipa_setup() when it has finished. In that case we're done here. */ if (loader =3D=3D IPA_LOADER_MODEM) goto done; =20 - /* Otherwise we need to load the firmware and have Trust Zone validate - * and install it. If that succeeds we can proceed with setup. - */ + /* The AP is loading GSI firmware; do so now */ ret =3D ipa_firmware_load(dev); if (ret) goto err_deconfig; =20 + /* GSI firmware is loaded; proceed to setup */ ret =3D ipa_setup(ipa); if (ret) goto err_deconfig; --=20 2.34.1 From nobody Fri Dec 19 04:30:55 2025 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 4472BC433FE for ; Sat, 12 Nov 2022 20:07:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234927AbiKLUHs (ORCPT ); Sat, 12 Nov 2022 15:07:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35724 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234995AbiKLUH3 (ORCPT ); Sat, 12 Nov 2022 15:07:29 -0500 Received: from mail-il1-x12d.google.com (mail-il1-x12d.google.com [IPv6:2607:f8b0:4864:20::12d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 861B614D19 for ; Sat, 12 Nov 2022 12:07:28 -0800 (PST) Received: by mail-il1-x12d.google.com with SMTP id z9so4015353ilu.10 for ; Sat, 12 Nov 2022 12:07:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=bQMtM7EzKXE7g7Q8ii/1nYLdfGgJeyG5qgm6GFG0MaY=; b=Su3MklfMJY8596qFSlI2fMYVrgpgXSRkl7MDteWVnD97GFCt9qVLEfOqMen13UD9F6 3L5IXY1n9+ZbSmUwWZUSk20mvOdXvMdNkUsH+w22RUejchFD+p2Yhxi8TimgOVA9uTDV qphlkjc96DUqQwpTxOeRh5qQb+1zmiE7wusxwDojYsckuyZSfCVemRpzqMc5T3DHrvdy 6FrbtLcoYBK1D3QVSGn326jqrzllaj9i/U7hZZWlP2ShmXfSa+v3c4mHsknmpTTOc8hG NnmrR64LB48M3a4yu7Q5oNiLMFLjqv6cW3bSTFIvXrTlD7nUpjbr6VjwstJVQ/QDIZCT 2LAg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=bQMtM7EzKXE7g7Q8ii/1nYLdfGgJeyG5qgm6GFG0MaY=; b=vlMuVSiZvZjwG7NDTr1WgVY/sf1hXnuNaw4kxzPGWkQgU33HbQOYQNx4DVOJbxg/bR YkhUL8e/GpY19warBROpeneJngyuDUYKKza89VurU3vxnKll+VnXL0xpZqC9C/enthom SFbjxYq6LLNiYvkdItBnFRLZQKZ2hVTC06xKvX/jTttSlKlYf/ED7wpHln0ikHYhKrMg +0puswzKrYneXrsTbJYligpN3/9C2ciDWepN+QEDAxDu9IgcNu/HW4snEOW+pvetwbmb 7+H1pdmgXaQnK4CtPBsK9cYkaV8p1jLCuAf7v9hVHvU22JQQySB8ZESLj9og0r/TBlSs szOA== X-Gm-Message-State: ANoB5pmvO2n7EDCMHgtvYsrnbsOsFWE5hRXO1DbGFy8cOCxQTEbMhRQY EfNQczEtaldS7Nm+Vm24WhKoUQ== X-Google-Smtp-Source: AA0mqf6ag5/+UcMBWUwQ6saOw2KQ7ElLnsfR2uCygQZV2sMNJ+qCQmER+pkWO0tak9fKQRJva0CKXg== X-Received: by 2002:a92:cd0d:0:b0:300:c497:d6a0 with SMTP id z13-20020a92cd0d000000b00300c497d6a0mr3594798iln.27.1668283647907; Sat, 12 Nov 2022 12:07:27 -0800 (PST) Received: from presto.localdomain ([98.61.227.136]) by smtp.gmail.com with ESMTPSA id j28-20020a02cb1c000000b00363dee286edsm2036870jap.60.2022.11.12.12.07.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Nov 2022 12:07:27 -0800 (PST) From: Alex Elder To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: andersson@kernel.org, konrad.dybcio@linaro.org, agross@kernel.org, elder@kernel.org, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next 4/5] dt-bindings: net: qcom,ipa: support skipping GSI firmware load Date: Sat, 12 Nov 2022 14:07:16 -0600 Message-Id: <20221112200717.1533622-5-elder@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221112200717.1533622-1-elder@linaro.org> References: <20221112200717.1533622-1-elder@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Add a new enumerated value to those defined for the qcom,gsi-loader property. If the qcom,gsi-loader is "skip", the GSI firmware will already be loaded, so neither the AP nor modem is required to load GSI firmware. Signed-off-by: Alex Elder Reviewed-by: Krzysztof Kozlowski --- Documentation/devicetree/bindings/net/qcom,ipa.yaml | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/net/qcom,ipa.yaml b/Document= ation/devicetree/bindings/net/qcom,ipa.yaml index 0dfd6c721e045..3d63505d1b802 100644 --- a/Documentation/devicetree/bindings/net/qcom,ipa.yaml +++ b/Documentation/devicetree/bindings/net/qcom,ipa.yaml @@ -128,10 +128,12 @@ properties: enum: - self - modem + - skip description: This indicates how GSI firmware should be loaded. If the AP loads and validates GSI firmware, this property has value "self". If the - modem does this, this property has value "modem". + modem does this, this property has value "modem". Otherwise, "skip" + means GSI firmware loading is not required. =20 modem-init: deprecated: true --=20 2.34.1 From nobody Fri Dec 19 04:30:55 2025 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 A410BC433FE for ; Sat, 12 Nov 2022 20:07:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234847AbiKLUH4 (ORCPT ); Sat, 12 Nov 2022 15:07:56 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:35842 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235016AbiKLUHb (ORCPT ); Sat, 12 Nov 2022 15:07:31 -0500 Received: from mail-il1-x129.google.com (mail-il1-x129.google.com [IPv6:2607:f8b0:4864:20::129]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 801F1165B9 for ; Sat, 12 Nov 2022 12:07:30 -0800 (PST) Received: by mail-il1-x129.google.com with SMTP id m15so4030208ilq.2 for ; Sat, 12 Nov 2022 12:07:30 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=umpLk1dbP5jy5ZPV4Q21UM7cr1nZKFjsXDStFsdzpxA=; b=Ut/gqy52LOxFagWry8zJuDnyu69bte+omzwmYqNJjdvDmQX60UlPpo692bej4Zhl9C tiH32C6p562bFsgNQA8qY2bXfS9xVCJDURVWy9Axdoe4EDtoH3XEqI0TZ2T7qjHfcFJB PaY2LK/FfpGEuv0LrqIoWWh6tWDsbtR+x8kK1rs4TBR9zzW2uRrVBikuYPEPu/LI/3vX BRKu2HCJ9gP608jB7pEpv+zCebScrj1VyC87MTS0v8ueM5/5I6Ilt3hRJUlw1su3zUAf wkjT+etQqpiHzS1wCY+eYesaBbyEXYjEPwEMwYfygSVfg68S6NMNma9zaalqmkK3WA77 QdPg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=umpLk1dbP5jy5ZPV4Q21UM7cr1nZKFjsXDStFsdzpxA=; b=CednvVMvaHvsMsd4F0ERgSt3MXP+YDx8borQm+1bVukfHT33RIVndxmLkfqK2cWXc3 JgCd0a7Ckvjf0ZzPZ6WyN1gZWoKLY3j83vlX74QJzNdm+NbZpkpyoOe5cUeDC8eBx9Yw XjEjB5cuyMkqRzzFmuJahm+CfOwOCLqNfCJc5oykkINiWIa21FVNTmf+d5bfI9nDYhzb Q+t7n3pYSDCMLk6KwStI2i9r3Vgni9EvV0sicmHvGEA2iQs1siIuDeN1uEdVB4YgwMv/ UZeuUqYcryhc9gZV/arQHG+zTh/aaw4PkHIeE6ABoBrpnOui0B41jy0Rz++5BayPSB91 38CQ== X-Gm-Message-State: ANoB5pm1+iSJSHzWUq1kuqEj9XrA26fYXNHiZVZ4H8sbPbc/UZOtJfYR D9ITsJaHyZTET/yqRDuV99pDdg== X-Google-Smtp-Source: AA0mqf6wJzsiyKserLnxFT3qmoxPiw6AwBOUHizEn6i/Wpy285f3kTXAf8dscv0fIstCOJQ0uE9myA== X-Received: by 2002:a92:da45:0:b0:302:568e:b493 with SMTP id p5-20020a92da45000000b00302568eb493mr210216ilq.183.1668283649429; Sat, 12 Nov 2022 12:07:29 -0800 (PST) Received: from presto.localdomain ([98.61.227.136]) by smtp.gmail.com with ESMTPSA id j28-20020a02cb1c000000b00363dee286edsm2036870jap.60.2022.11.12.12.07.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 12 Nov 2022 12:07:28 -0800 (PST) From: Alex Elder To: robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: andersson@kernel.org, konrad.dybcio@linaro.org, agross@kernel.org, elder@kernel.org, linux-arm-msm@vger.kernel.org, netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next 5/5] net: ipa: permit GSI firmware loading to be skipped Date: Sat, 12 Nov 2022 14:07:17 -0600 Message-Id: <20221112200717.1533622-6-elder@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221112200717.1533622-1-elder@linaro.org> References: <20221112200717.1533622-1-elder@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Define a new value "skip" for the "qcom,gsi-loader" Device Tree property. If used, it indicates that neither the AP nor the modem need to load GSI firmware (because it has already been loaded--for example by the boot loader). Signed-off-by: Alex Elder --- drivers/net/ipa/ipa_main.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/net/ipa/ipa_main.c b/drivers/net/ipa/ipa_main.c index 214e524dce795..8f20825675a1a 100644 --- a/drivers/net/ipa/ipa_main.c +++ b/drivers/net/ipa/ipa_main.c @@ -87,12 +87,14 @@ * @IPA_LOADER_DEFER: System not ready; try again later * @IPA_LOADER_SELF: AP loads GSI firmware * @IPA_LOADER_MODEM: Modem loads GSI firmware, signals when done + * @IPA_LOADER_SKIP: Neither AP nor modem need to load GSI firmware * @IPA_LOADER_INVALID: GSI firmware loader specification is invalid */ enum ipa_firmware_loader { IPA_LOADER_DEFER, IPA_LOADER_SELF, IPA_LOADER_MODEM, + IPA_LOADER_SKIP, IPA_LOADER_INVALID, }; =20 @@ -740,6 +742,10 @@ static enum ipa_firmware_loader ipa_firmware_loader(st= ruct device *dev) if (!strcmp(str, "modem")) return IPA_LOADER_MODEM; =20 + /* No GSI firmware load is needed for "skip" */ + if (!strcmp(str, "skip")) + return IPA_LOADER_SKIP; + /* Any value other than "self" is an error */ if (strcmp(str, "self")) return IPA_LOADER_INVALID; @@ -872,10 +878,12 @@ static int ipa_probe(struct platform_device *pdev) if (loader =3D=3D IPA_LOADER_MODEM) goto done; =20 - /* The AP is loading GSI firmware; do so now */ - ret =3D ipa_firmware_load(dev); - if (ret) - goto err_deconfig; + if (loader =3D=3D IPA_LOADER_SELF) { + /* The AP is loading GSI firmware; do so now */ + ret =3D ipa_firmware_load(dev); + if (ret) + goto err_deconfig; + } /* Otherwise loader =3D=3D IPA_LOADER_SKIP */ =20 /* GSI firmware is loaded; proceed to setup */ ret =3D ipa_setup(ipa); --=20 2.34.1