From patchwork Thu Apr 4 19:11:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mayank Rana X-Patchwork-Id: 13618166 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) (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 84A5D131E24; Thu, 4 Apr 2024 19:11:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.168.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712257907; cv=none; b=Jb7T/4aWQOHtql466pK1CKoQGaFFNxTg5FdlGudrl1EhLvkjR7VD+vl+g+ej+KsJeWsvikr6AcnBujpnSltL7nIfFSMi6cOdiiMnYnW9Rx9g2QfjJ3uE18KYcizHcJKQwKYloPKvxWj3Ajq9uu/cpGkhw6FZx7xy141Gnc0A1bk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1712257907; c=relaxed/simple; bh=Tca4fO60cbZ1yH1gbmQjkZNUVbk9WcleKEQdrpBl/1k=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=NvOMZNs6xVSaRfKFBb1qrqE4JLFA3I5De436e2UlPzFrM50UxPp5ZjbOlxhl8gEqjJmq0J6FYV/cVeElrIqyYwSnalB+k+mf/Agi0cbnBKJ/qVtVDXw7CRbVb/k5Qn6/xxUkF+IBw7xkuSn76pc2bvFk23lk/Fc9Wk2Xboi8xM4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com; spf=pass smtp.mailfrom=quicinc.com; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b=DuqQlJQ9; arc=none smtp.client-ip=205.220.168.131 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=quicinc.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=quicinc.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=quicinc.com header.i=@quicinc.com header.b="DuqQlJQ9" Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.24/8.17.1.24) with ESMTP id 434HeDqR004715; Thu, 4 Apr 2024 19:11:39 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; s= qcppdkim1; bh=VlGHNR9rSJpOhaoG6BkRoTz51woq+R/nyE2bRVD5ZyI=; b=Du qQlJQ9nIsfsWZqxD5meD8uq2LBLgmOM8oDnikbzr2ofDJATXr233UKAynf9v2qD7 0yBreamha6JdtW7fFF6s2AFwY5DSuhm2uOVz9uAV0hB86WHNpfHHxwa3D0L7tm96 Gvhw7X8WECrx4GH2lZVTHCmoj9bbHReHXqPQgfviMrZ8x2bu9uFYUJ5Qh4sxWDX+ b/1JOF/QnLorwoymREFipmtLI9nHlTwBNIVNE/ZTxpFaS7A2zXBlMbKNS35YvU93 ilhDpYQ5+JcbT3bQzxixpdqmU18bAWE3WrK36OqoDGaXAzo+xzEYLeYDNVGfcOgP 9PT6nSLI2LYrrOhmHJdQ== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3x9v8jgx7y-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 04 Apr 2024 19:11:38 +0000 (GMT) Received: from nalasex01a.na.qualcomm.com (nalasex01a.na.qualcomm.com [10.47.209.196]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 434JBcNt012013 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 4 Apr 2024 19:11:38 GMT Received: from hu-mrana-lv.qualcomm.com (10.49.16.6) by nalasex01a.na.qualcomm.com (10.47.209.196) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.4; Thu, 4 Apr 2024 12:11:37 -0700 From: Mayank Rana To: , , , , , , , , , CC: , , , , , , Mayank Rana Subject: [RFC PATCH 0/2] Add Qualcomm PCIe ECAM root complex driver Date: Thu, 4 Apr 2024 12:11:22 -0700 Message-ID: <1712257884-23841-1-git-send-email-quic_mrana@quicinc.com> X-Mailer: git-send-email 2.7.4 Precedence: bulk X-Mailing-List: linux-pci@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: nalasex01b.na.qualcomm.com (10.47.209.197) To nalasex01a.na.qualcomm.com (10.47.209.196) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-GUID: 9S1iCTB7-sAuZdlGJYrrxMkFyMciDxxM X-Proofpoint-ORIG-GUID: 9S1iCTB7-sAuZdlGJYrrxMkFyMciDxxM X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-04-04_15,2024-04-04_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 spamscore=0 malwarescore=0 phishscore=0 priorityscore=1501 adultscore=0 mlxscore=0 clxscore=1011 mlxlogscore=951 impostorscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2404010003 definitions=main-2404040136 On some of Qualcomm platform, firmware takes care of system resources related to PCIe PHY and controller as well bringing up PCIe link and having static iATU configuration for PCIe controller to work into ECAM compliant mode. Hence add Qualcomm PCIe ECAM root complex driver. Tested: - Validated NVME functionality with PCIe0 and PCIe1 on SA877p-ride platform Mayank Rana (2): dt-bindings: pcie: Document QCOM PCIE ECAM compatible root complex PCI: Add Qualcomm PCIe ECAM root complex driver .../devicetree/bindings/pci/qcom,pcie-ecam.yaml | 94 ++++ drivers/pci/controller/Kconfig | 12 + drivers/pci/controller/Makefile | 1 + drivers/pci/controller/pcie-qcom-ecam.c | 575 +++++++++++++++++++++ 4 files changed, 682 insertions(+) create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie-ecam.yaml create mode 100644 drivers/pci/controller/pcie-qcom-ecam.c