From patchwork Tue Jul 18 15:20:42 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna chaitanya chundru X-Patchwork-Id: 705435 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 7A265C0015E for ; Tue, 18 Jul 2023 15:21:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233561AbjGRPVG (ORCPT ); Tue, 18 Jul 2023 11:21:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53222 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233541AbjGRPVC (ORCPT ); Tue, 18 Jul 2023 11:21:02 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4C6A7C0; Tue, 18 Jul 2023 08:21:01 -0700 (PDT) Received: from pps.filterd (m0279872.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 36IBQnRK015252; Tue, 18 Jul 2023 15:20:53 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=qcppdkim1; bh=X8U7m6oeXAUjm/N5kYm0WAl5wvbpfFgciZSimFM50A8=; b=R5nNpDJxaOlkcABHshSGxxR7KCl+cx17IUaxa16HYacJefqrF/q2ugH7KSE9aNGOOL+/ OEJI7fBdZz1zymdeyPfaIjj4WZMbavzkW5ETyoAdcFnjZkQFNrwN43ViKN1hCEHCaQFO STkB0vhdjQ1YG9K+kF2c7aHHnx9CraIuaR6YY0TNKSWNE3sbYrSnh680ud4rkx9Wom72 vAsoXj9WWRYKz16GCccIuj0F5MZz/66F6oBU1AKCQ4SQ8zlikWgCuS+B/enoX/AjlS/B ezLERYVegXhof8IiirQZfZlmgtzjrlcNizRfXR3bq8o96qvBUDJqojkaff3N2mj0TqIk tg== Received: from apblrppmta02.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3rw33mkner-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 18 Jul 2023 15:20:53 +0000 Received: from pps.filterd (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 36IFKnsC026275; Tue, 18 Jul 2023 15:20:49 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTPS id 3rumhkb0g9-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 18 Jul 2023 15:20:49 +0000 Received: from APBLRPPMTA02.qualcomm.com (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 36IFKnel026056; Tue, 18 Jul 2023 15:20:49 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-krichai-hyd.qualcomm.com [10.213.110.112]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 36IFKnmU025903; Tue, 18 Jul 2023 15:20:49 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 4058933) id 9020B4B05; Tue, 18 Jul 2023 20:50:48 +0530 (+0530) From: Krishna chaitanya chundru To: manivannan.sadhasivam@linaro.org Cc: helgaas@kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, quic_vbadigan@quicinc.com, quic_nitegupt@quicinc.com, quic_skananth@quicinc.com, quic_ramkri@quicinc.com, krzysztof.kozlowski@linaro.org, Krishna chaitanya chundru , Manivannan Sadhasivam , Andy Gross , Bjorn Andersson , Konrad Dybcio , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS) Subject: [PATCH v9 1/4] dt-bindings: PCI: qcom: ep: Add interconnects path Date: Tue, 18 Jul 2023 20:50:42 +0530 Message-Id: <1689693645-28254-2-git-send-email-quic_krichai@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1689693645-28254-1-git-send-email-quic_krichai@quicinc.com> References: <1689693645-28254-1-git-send-email-quic_krichai@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: tcyAC43M8yahX8diXtFqEhMvLYDsSrBa X-Proofpoint-ORIG-GUID: tcyAC43M8yahX8diXtFqEhMvLYDsSrBa X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-18_11,2023-07-18_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 priorityscore=1501 clxscore=1015 lowpriorityscore=0 bulkscore=0 adultscore=0 phishscore=0 spamscore=0 mlxlogscore=999 suspectscore=0 malwarescore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307180140 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Some platforms may not boot if a device driver doesn't initialize the interconnect path. Mostly it is handled by the bootloader but we have starting to see cases where bootloader simply ignores them. Add the "pcie-mem" & "cpu-pcie" interconnect path as a required property to the bindings. Signed-off-by: Krishna chaitanya chundru Acked-by: Manivannan Sadhasivam Reviewed-by: Krzysztof Kozlowski --- Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml index 8111122..e553341 100644 --- a/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml +++ b/Documentation/devicetree/bindings/pci/qcom,pcie-ep.yaml @@ -71,6 +71,14 @@ properties: description: GPIO used as WAKE# output signal maxItems: 1 + interconnects: + maxItems: 2 + + interconnect-names: + items: + - const: pcie-mem + - const: cpu-pcie + resets: maxItems: 1 @@ -98,6 +106,8 @@ required: - interrupts - interrupt-names - reset-gpios + - interconnects + - interconnect-names - resets - reset-names - power-domains @@ -167,7 +177,9 @@ examples: - | #include #include + #include #include + pcie_ep: pcie-ep@1c00000 { compatible = "qcom,sdx55-pcie-ep"; reg = <0x01c00000 0x3000>, @@ -194,6 +206,9 @@ examples: interrupts = , ; interrupt-names = "global", "doorbell"; + interconnects = <&system_noc MASTER_PCIE &mc_virt SLAVE_EBI_CH0>, + <&mem_noc MASTER_AMPSS_M0 &system_noc SLAVE_PCIE_0>; + interconnect-names = "pcie-mem", "cpu-pcie"; reset-gpios = <&tlmm 57 GPIO_ACTIVE_LOW>; wake-gpios = <&tlmm 53 GPIO_ACTIVE_LOW>; resets = <&gcc GCC_PCIE_BCR>; From patchwork Tue Jul 18 15:20:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna chaitanya chundru X-Patchwork-Id: 704090 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 00431C001DF for ; Tue, 18 Jul 2023 15:21:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233575AbjGRPVR (ORCPT ); Tue, 18 Jul 2023 11:21:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53456 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233549AbjGRPVK (ORCPT ); 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Tue, 18 Jul 2023 15:21:04 +0000 Received: from pps.filterd (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 36IFKor0026370; Tue, 18 Jul 2023 15:20:50 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTPS id 3rumhkb0gd-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 18 Jul 2023 15:20:50 +0000 Received: from APBLRPPMTA02.qualcomm.com (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 36IFKnOv026209; Tue, 18 Jul 2023 15:20:49 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-krichai-hyd.qualcomm.com [10.213.110.112]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 36IFKn6L026053; Tue, 18 Jul 2023 15:20:49 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 4058933) id C14EE4B07; Tue, 18 Jul 2023 20:50:48 +0530 (+0530) From: Krishna chaitanya chundru To: manivannan.sadhasivam@linaro.org Cc: helgaas@kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, quic_vbadigan@quicinc.com, quic_nitegupt@quicinc.com, quic_skananth@quicinc.com, quic_ramkri@quicinc.com, krzysztof.kozlowski@linaro.org, Krishna chaitanya chundru , Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS) Subject: [PATCH v9 2/4] arm: dts: qcom: sdx65: Add PCIe interconnect path Date: Tue, 18 Jul 2023 20:50:43 +0530 Message-Id: <1689693645-28254-3-git-send-email-quic_krichai@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1689693645-28254-1-git-send-email-quic_krichai@quicinc.com> References: <1689693645-28254-1-git-send-email-quic_krichai@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: KwqhyEmy84Njc5GFkbsDCeRkM-HnKC8q X-Proofpoint-ORIG-GUID: KwqhyEmy84Njc5GFkbsDCeRkM-HnKC8q X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-18_11,2023-07-18_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 adultscore=0 mlxlogscore=883 impostorscore=0 clxscore=1015 phishscore=0 spamscore=0 lowpriorityscore=0 priorityscore=1501 mlxscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307180141 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add pcie-mem & cpu-pcie interconnect path to sdx65 platform. Reviewed-by: Manivannan Sadhasivam Signed-off-by: Krishna chaitanya chundru --- arch/arm/boot/dts/qcom/qcom-sdx65.dtsi | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/arch/arm/boot/dts/qcom/qcom-sdx65.dtsi b/arch/arm/boot/dts/qcom/qcom-sdx65.dtsi index 1a35830..69fe7e5 100644 --- a/arch/arm/boot/dts/qcom/qcom-sdx65.dtsi +++ b/arch/arm/boot/dts/qcom/qcom-sdx65.dtsi @@ -332,6 +332,10 @@ ; interrupt-names = "global", "doorbell"; + interconnects = <&system_noc MASTER_PCIE_0 &mc_virt SLAVE_EBI1>, + <&mem_noc MASTER_APPSS_PROC &system_noc SLAVE_PCIE_0>; + interconnect-names = "pcie-mem", "cpu-pcie"; + resets = <&gcc GCC_PCIE_BCR>; reset-names = "core"; From patchwork Tue Jul 18 15:20:44 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna chaitanya chundru X-Patchwork-Id: 704092 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 77684EB64DD for ; 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Tue, 18 Jul 2023 15:20:53 +0000 Received: from pps.filterd (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 36IFKoH8026369; Tue, 18 Jul 2023 15:20:50 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTPS id 3rumhkb0gc-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 18 Jul 2023 15:20:50 +0000 Received: from APBLRPPMTA02.qualcomm.com (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 36IFKnof026206; Tue, 18 Jul 2023 15:20:49 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-krichai-hyd.qualcomm.com [10.213.110.112]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 36IFKnJd026054; Tue, 18 Jul 2023 15:20:49 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 4058933) id F1E674B0A; Tue, 18 Jul 2023 20:50:48 +0530 (+0530) From: Krishna chaitanya chundru To: manivannan.sadhasivam@linaro.org Cc: helgaas@kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, quic_vbadigan@quicinc.com, quic_nitegupt@quicinc.com, quic_skananth@quicinc.com, quic_ramkri@quicinc.com, krzysztof.kozlowski@linaro.org, Krishna chaitanya chundru , Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , devicetree@vger.kernel.org (open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS) Subject: [PATCH v9 3/4] arm: dts: qcom: sdx55: Add CPU PCIe interconnect path Date: Tue, 18 Jul 2023 20:50:44 +0530 Message-Id: <1689693645-28254-4-git-send-email-quic_krichai@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1689693645-28254-1-git-send-email-quic_krichai@quicinc.com> References: <1689693645-28254-1-git-send-email-quic_krichai@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: aFTrNRazKpJM_xwmjNb_czRy-DjdqFe_ X-Proofpoint-ORIG-GUID: aFTrNRazKpJM_xwmjNb_czRy-DjdqFe_ X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-18_11,2023-07-18_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 mlxscore=0 mlxlogscore=815 phishscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 bulkscore=0 priorityscore=1501 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307180141 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add cpu-pcie interconnect path to sdx65 platform. Signed-off-by: Krishna chaitanya chundru --- arch/arm/boot/dts/qcom/qcom-sdx55.dtsi | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/arch/arm/boot/dts/qcom/qcom-sdx55.dtsi b/arch/arm/boot/dts/qcom/qcom-sdx55.dtsi index df3cd9c..a7c0c26 100644 --- a/arch/arm/boot/dts/qcom/qcom-sdx55.dtsi +++ b/arch/arm/boot/dts/qcom/qcom-sdx55.dtsi @@ -422,8 +422,9 @@ interrupt-names = "global", "doorbell"; - interconnects = <&system_noc MASTER_PCIE &mc_virt SLAVE_EBI_CH0>; - interconnect-names = "pcie-mem"; + interconnects = <&system_noc MASTER_PCIE &mc_virt SLAVE_EBI_CH0>, + <&mem_noc MASTER_AMPSS_M0 &system_noc SLAVE_PCIE_0>; + interconnect-names = "pcie-mem", "cpu-pcie"; resets = <&gcc GCC_PCIE_BCR>; reset-names = "core"; From patchwork Tue Jul 18 15:20:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Krishna chaitanya chundru X-Patchwork-Id: 704091 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 65585EB64DD for ; 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Tue, 18 Jul 2023 15:20:53 +0000 Received: from pps.filterd (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 36IFKoae026387; Tue, 18 Jul 2023 15:20:50 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTPS id 3rumhkb0gq-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Tue, 18 Jul 2023 15:20:50 +0000 Received: from APBLRPPMTA02.qualcomm.com (APBLRPPMTA02.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 36IFKnen026056; Tue, 18 Jul 2023 15:20:50 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-krichai-hyd.qualcomm.com [10.213.110.112]) by APBLRPPMTA02.qualcomm.com (PPS) with ESMTP id 36IFKnQu026272; Tue, 18 Jul 2023 15:20:50 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 4058933) id 346C44B0E; Tue, 18 Jul 2023 20:50:49 +0530 (+0530) From: Krishna chaitanya chundru To: manivannan.sadhasivam@linaro.org Cc: helgaas@kernel.org, linux-pci@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, quic_vbadigan@quicinc.com, quic_nitegupt@quicinc.com, quic_skananth@quicinc.com, quic_ramkri@quicinc.com, krzysztof.kozlowski@linaro.org, Krishna chaitanya chundru , Manivannan Sadhasivam , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Rob Herring , Bjorn Helgaas Subject: [PATCH v9 4/4] PCI: qcom-ep: Add ICC bandwidth voting support Date: Tue, 18 Jul 2023 20:50:45 +0530 Message-Id: <1689693645-28254-5-git-send-email-quic_krichai@quicinc.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1689693645-28254-1-git-send-email-quic_krichai@quicinc.com> References: <1689693645-28254-1-git-send-email-quic_krichai@quicinc.com> X-QCInternal: smtphost X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: MuoY1T3pP3SUBkwmaZeFXItb5FfYPrF7 X-Proofpoint-GUID: MuoY1T3pP3SUBkwmaZeFXItb5FfYPrF7 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.957,Hydra:6.0.591,FMLib:17.11.176.26 definitions=2023-07-18_11,2023-07-18_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 priorityscore=1501 malwarescore=0 adultscore=0 spamscore=0 mlxlogscore=999 phishscore=0 clxscore=1015 bulkscore=0 suspectscore=0 lowpriorityscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307180141 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Add support for voting interconnect (ICC) bandwidth based on the link speed and width. This commit is inspired from the basic interconnect support added to pcie-qcom driver in commit c4860af88d0c ("PCI: qcom: Add basic interconnect support"). The interconnect support is kept optional to be backward compatible with legacy devicetrees. Signed-off-by: Krishna chaitanya chundru Reviewed-by: Manivannan Sadhasivam --- drivers/pci/controller/dwc/pcie-qcom-ep.c | 72 +++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-qcom-ep.c b/drivers/pci/controller/dwc/pcie-qcom-ep.c index 0fe7f06..cf9fc94 100644 --- a/drivers/pci/controller/dwc/pcie-qcom-ep.c +++ b/drivers/pci/controller/dwc/pcie-qcom-ep.c @@ -13,6 +13,7 @@ #include #include #include +#include #include #include #include @@ -28,6 +29,7 @@ #define PARF_SYS_CTRL 0x00 #define PARF_DB_CTRL 0x10 #define PARF_PM_CTRL 0x20 +#define PARF_PM_STTS 0x24 #define PARF_MHI_CLOCK_RESET_CTRL 0x174 #define PARF_MHI_BASE_ADDR_LOWER 0x178 #define PARF_MHI_BASE_ADDR_UPPER 0x17c @@ -133,6 +135,11 @@ #define CORE_RESET_TIME_US_MAX 1005 #define WAKE_DELAY_US 2000 /* 2 ms */ +#define PCIE_GEN1_BW_MBPS 250 +#define PCIE_GEN2_BW_MBPS 500 +#define PCIE_GEN3_BW_MBPS 985 +#define PCIE_GEN4_BW_MBPS 1969 + #define to_pcie_ep(x) dev_get_drvdata((x)->dev) enum qcom_pcie_ep_link_status { @@ -178,6 +185,8 @@ struct qcom_pcie_ep { struct phy *phy; struct dentry *debugfs; + struct icc_path *icc_mem; + struct clk_bulk_data *clks; int num_clks; @@ -253,8 +262,49 @@ static void qcom_pcie_dw_stop_link(struct dw_pcie *pci) disable_irq(pcie_ep->perst_irq); } +static void qcom_pcie_ep_icc_update(struct qcom_pcie_ep *pcie_ep) +{ + struct dw_pcie *pci = &pcie_ep->pci; + u32 offset, status, bw; + int speed, width; + int ret; + + if (!pcie_ep->icc_mem) + return; + + offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); + status = readw(pci->dbi_base + offset + PCI_EXP_LNKSTA); + + speed = FIELD_GET(PCI_EXP_LNKSTA_CLS, status); + width = FIELD_GET(PCI_EXP_LNKSTA_NLW, status); + + switch (speed) { + case 1: + bw = MBps_to_icc(PCIE_GEN1_BW_MBPS); + break; + case 2: + bw = MBps_to_icc(PCIE_GEN2_BW_MBPS); + break; + case 3: + bw = MBps_to_icc(PCIE_GEN3_BW_MBPS); + break; + default: + dev_warn(pci->dev, "using default GEN4 bandwidth\n"); + fallthrough; + case 4: + bw = MBps_to_icc(PCIE_GEN4_BW_MBPS); + break; + } + + ret = icc_set_bw(pcie_ep->icc_mem, 0, width * bw); + if (ret) + dev_err(pci->dev, "failed to set interconnect bandwidth: %d\n", + ret); +} + static int qcom_pcie_enable_resources(struct qcom_pcie_ep *pcie_ep) { + struct dw_pcie *pci = &pcie_ep->pci; int ret; ret = clk_bulk_prepare_enable(pcie_ep->num_clks, pcie_ep->clks); @@ -277,8 +327,24 @@ static int qcom_pcie_enable_resources(struct qcom_pcie_ep *pcie_ep) if (ret) goto err_phy_exit; + /* + * Some Qualcomm platforms require interconnect bandwidth constraints + * to be set before enabling interconnect clocks. + * + * Set an initial peak bandwidth corresponding to single-lane Gen 1 + * for the pcie-mem path. + */ + ret = icc_set_bw(pcie_ep->icc_mem, 0, MBps_to_icc(PCIE_GEN1_BW_MBPS)); + if (ret) { + dev_err(pci->dev, "failed to set interconnect bandwidth: %d\n", + ret); + goto err_phy_off; + } + return 0; +err_phy_off: + phy_power_off(pcie_ep->phy); err_phy_exit: phy_exit(pcie_ep->phy); err_disable_clk: @@ -289,6 +355,7 @@ static int qcom_pcie_enable_resources(struct qcom_pcie_ep *pcie_ep) static void qcom_pcie_disable_resources(struct qcom_pcie_ep *pcie_ep) { + icc_set_bw(pcie_ep->icc_mem, 0, 0); phy_power_off(pcie_ep->phy); phy_exit(pcie_ep->phy); clk_bulk_disable_unprepare(pcie_ep->num_clks, pcie_ep->clks); @@ -550,6 +617,10 @@ static int qcom_pcie_ep_get_resources(struct platform_device *pdev, if (IS_ERR(pcie_ep->phy)) ret = PTR_ERR(pcie_ep->phy); + pcie_ep->icc_mem = devm_of_icc_get(dev, "pcie-mem"); + if (IS_ERR(pcie_ep->icc_mem)) + ret = PTR_ERR(pcie_ep->icc_mem); + return ret; } @@ -573,6 +644,7 @@ static irqreturn_t qcom_pcie_ep_global_irq_thread(int irq, void *data) } else if (FIELD_GET(PARF_INT_ALL_BME, status)) { dev_dbg(dev, "Received BME event. Link is enabled!\n"); pcie_ep->link_status = QCOM_PCIE_EP_LINK_ENABLED; + qcom_pcie_ep_icc_update(pcie_ep); pci_epc_bme_notify(pci->ep.epc); } else if (FIELD_GET(PARF_INT_ALL_PM_TURNOFF, status)) { dev_dbg(dev, "Received PM Turn-off event! Entering L23\n");