From patchwork Sat Nov 11 03:54:32 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mrinmay Sarkar X-Patchwork-Id: 743199 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AA6395681; Sat, 11 Nov 2023 03:54:53 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="YoqjvBDL" Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B5D911FEF; Fri, 10 Nov 2023 19:54:52 -0800 (PST) Received: from pps.filterd (m0279867.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 3AB3Nfc4027355; Sat, 11 Nov 2023 03:54:45 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h=from : to : cc : subject : date : message-id : mime-version : content-type : content-transfer-encoding; s=qcppdkim1; bh=bLNa9czWQ3eYE56w8G2NPBZ55QYMU3nVDPLXbuZXPwo=; b=YoqjvBDLGCxBqK8OuMYme4IGVOXLP52xlILdKJoMxRlgxm4F0icy2BgKuzDsygoQf+wO wdW5xZ7lqo7UCywTzTrvsr5z0i0HyhKXDlReNS9Z4PGGPewQP7fPN77v8Yv8EQD65UO6 2+jtUtC3iJhIEhQWX1H7yK1N/AfVdNvuANtIk69LhEy2I0X0JgCZ1qGQLCvfw6fJkO92 G/MS4nG2UGA+4w72YlHYF3tAZAmSa9ZiwuuzPCDCQRp6cl6/Jv1Ai3ABvYcCD8wzbzrg k6HxNW/zy/0lMThfLwljoL4yjm6XsCIZcIYe/cOe4mbp38jo/9CKffHdAd9wggMB6CsX 0Q== Received: from apblrppmta01.qualcomm.com (blr-bdr-fw-01_GlobalNAT_AllZones-Outside.qualcomm.com [103.229.18.19]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3u9yan87n4-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Sat, 11 Nov 2023 03:54:45 +0000 Received: from pps.filterd (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTP id 3AB3secR021468; Sat, 11 Nov 2023 03:54:40 GMT Received: from pps.reinject (localhost [127.0.0.1]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3u5f1mn8gk-1; Sat, 11 Nov 2023 03:54:40 +0000 Received: from APBLRPPMTA01.qualcomm.com (APBLRPPMTA01.qualcomm.com [127.0.0.1]) by pps.reinject (8.17.1.5/8.17.1.5) with ESMTP id 3AB3qaJq019988; Sat, 11 Nov 2023 03:54:40 GMT Received: from hu-sgudaval-hyd.qualcomm.com (hu-msarkar-hyd.qualcomm.com [10.213.111.194]) by APBLRPPMTA01.qualcomm.com (PPS) with ESMTP id 3AB3sdeO021463; Sat, 11 Nov 2023 03:54:40 +0000 Received: by hu-sgudaval-hyd.qualcomm.com (Postfix, from userid 3891782) id E320A2D2B; Sat, 11 Nov 2023 09:24:38 +0530 (+0530) From: Mrinmay Sarkar To: agross@kernel.org, andersson@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, konrad.dybcio@linaro.org, mani@kernel.org, robh+dt@kernel.org Cc: quic_shazhuss@quicinc.com, quic_nitegupt@quicinc.com, quic_ramkri@quicinc.com, quic_nayiluri@quicinc.com, dmitry.baryshkov@linaro.org, robh@kernel.org, quic_krichai@quicinc.com, quic_vbadigan@quicinc.com, quic_parass@quicinc.com, quic_schintav@quicinc.com, quic_shijjose@quicinc.com, Mrinmay Sarkar , Lorenzo Pieralisi , =?utf-8?q?Krzysztof_Wilczy=C5=84?= =?utf-8?q?ski?= , Bjorn Helgaas , linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: [PATCH v2 0/3] arm64: qcom: sa8775p: add cache coherency support for SA8775P Date: Sat, 11 Nov 2023 09:24:32 +0530 Message-Id: <1699674876-4982-1-git-send-email-quic_msarkar@quicinc.com> X-Mailer: git-send-email 2.7.4 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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: bGzhLflW95YnvXxsBErx_0ASQ2_dL93D X-Proofpoint-GUID: bGzhLflW95YnvXxsBErx_0ASQ2_dL93D X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.987,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2023-11-10_21,2023-11-09_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=1 bulkscore=0 adultscore=0 malwarescore=0 phishscore=0 mlxscore=1 suspectscore=0 spamscore=1 lowpriorityscore=0 impostorscore=0 mlxlogscore=195 priorityscore=1501 clxscore=1015 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311060000 definitions=main-2311110030 In a multiprocessor system cache snooping maintains the consistency of caches. Snooping logic is disabled from HW on this platform. Cache coherency doesn’t work without enabling this logic. This series is to enable cache snooping logic in both RC and EP driver and add the "dma-coherent" property in dtsi to support cache coherency in 8775 platform. To verify this series we required [1] [1] https://lore.kernel.org/all/1699669982-7691-1-git-send-email-quic_msarkar@quicinc.com/ v1 -> v2: - update cover letter with explanation. - define each of these bits and ORing at usage time rather than directly writing value in register. Mrinmay Sarkar (3): PCI: qcom: Enable cache coherency for SA8775P RC PCI: qcom-ep: Enable cache coherency for SA8775P EP arm64: dts: qcom: sa8775p: Mark PCIe controller as cache coherent arch/arm64/boot/dts/qcom/sa8775p.dtsi | 1 + drivers/pci/controller/dwc/pcie-qcom-ep.c | 10 ++++++++++ drivers/pci/controller/dwc/pcie-qcom.c | 13 +++++++++++++ 3 files changed, 24 insertions(+)