From patchwork Mon Jul 24 06:34:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sricharan Ramabadhran X-Patchwork-Id: 13323475 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 81F2BC001B0 for ; Mon, 24 Jul 2023 06:36:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230063AbjGXGgn (ORCPT ); Mon, 24 Jul 2023 02:36:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60856 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229506AbjGXGgf (ORCPT ); Mon, 24 Jul 2023 02:36:35 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD03810F5; Sun, 23 Jul 2023 23:36:03 -0700 (PDT) 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 36O6VevR013855; Mon, 24 Jul 2023 06:35:03 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-transfer-encoding : content-type; s=qcppdkim1; bh=sKNIlGgDGJQyffX5cxfVtq4EsikPhy0mBhHTSMVlDmk=; b=fh3h/CaCMH7uTiSBJ0R/cd/jg8JlNN/3OGAHbr6J6pGmcnfSdQGIZ2i38ViIx6vtIruJ 3eWXBXPXC93tek2snnVQMQXI2pWk8F78zkMNoS7DxQE45fqk78N8/6rRDIwHtajQUJp8 JAQ7Hh+JJdB8hmtWwTUHCCsu7xJ/NKzf8b3SnwRH98bxrLU7MoxLlCSvJtyC8l77kInt N/lz6nHmNKzjZyWgl/9NkCFUE+EYJSGLraCsfcmzvsBhxHLI/AtFA1zEmLQHt8Ug2Kv3 UoYAtTdUAWYCM8+TYpeCv2BMLQ/J8R3D8AdyQ8ZfA+53jscbf4mepDgZSdEp9LH0kdzk wQ== Received: from nalasppmta04.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3s04tmaq7e-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 24 Jul 2023 06:35:02 +0000 Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA04.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 36O6Z1Xm015221 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 24 Jul 2023 06:35:01 GMT Received: from win-platform-upstream01.qualcomm.com (10.80.80.8) by nalasex01c.na.qualcomm.com (10.47.97.35) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1118.30; Sun, 23 Jul 2023 23:34:53 -0700 From: Sricharan Ramabadhran To: , , , , , , , , , , , , CC: , , Subject: [PATCH V5] PCI: qcom: Fixing broken pcie enumeration for 2_3_3 configs ops Date: Mon, 24 Jul 2023 12:04:29 +0530 Message-ID: <20230724063429.3980462-1-quic_srichara@quicinc.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) To nalasex01c.na.qualcomm.com (10.47.97.35) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Proofpoint-ORIG-GUID: 8yoK1RlbjHvgoxwsAZAtvwcMYbQjkxzU X-Proofpoint-GUID: 8yoK1RlbjHvgoxwsAZAtvwcMYbQjkxzU 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=2023-07-24_04,2023-07-20_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 suspectscore=0 lowpriorityscore=0 priorityscore=1501 impostorscore=0 mlxscore=0 malwarescore=0 phishscore=0 mlxlogscore=999 clxscore=1015 bulkscore=0 spamscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2306200000 definitions=main-2307240060 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org PARF_SLV_ADDR_SPACE_SIZE_2_3_3 macro is used for IPQ8074 2_3_3 post_init. PCIe slave addr register offset is 0x358, but was wrongly changed to 0x168 as a part of commit 39171b33f652 ("PCI: qcom: Remove PCIE20_ prefix from register definitions"). Fixing it, by using the right macro and remove the unused PARF_SLV_ADDR_SPACE_SIZE_2_3_3. Without this access to the registers of slave addr space like iATU etc are broken leading to pcie enumeration failure. Fixes: 39171b33f652 ("PCI: qcom: Remove PCIE20_ prefix from register definitions") Cc: Reviewed-by: Manivannan Sadhasivam Reviewed-by: Konrad Dybcio Signed-off-by: Sricharan Ramabadhran Tested-by: Robert Marko --- [v5] Fixed subject, commit log [v4] Fix commit sub and added '' reviewed-by tag [v3] Added reviewed-by tag, fixed subject, commit text [v2] Fixed the 'fixes tag' correctly, subject, right macro usage drivers/pci/controller/dwc/pcie-qcom.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 4ab30892f6ef..8418894b3de7 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -43,7 +43,6 @@ #define PARF_PHY_REFCLK 0x4c #define PARF_CONFIG_BITS 0x50 #define PARF_DBI_BASE_ADDR 0x168 -#define PARF_SLV_ADDR_SPACE_SIZE_2_3_3 0x16c /* Register offset specific to IP ver 2.3.3 */ #define PARF_MHI_CLOCK_RESET_CTRL 0x174 #define PARF_AXI_MSTR_WR_ADDR_HALT 0x178 #define PARF_AXI_MSTR_WR_ADDR_HALT_V2 0x1a8 @@ -810,8 +809,7 @@ static int qcom_pcie_post_init_2_3_3(struct qcom_pcie *pcie) u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); u32 val; - writel(SLV_ADDR_SPACE_SZ, - pcie->parf + PARF_SLV_ADDR_SPACE_SIZE_2_3_3); + writel(SLV_ADDR_SPACE_SZ, pcie->parf + PARF_SLV_ADDR_SPACE_SIZE); val = readl(pcie->parf + PARF_PHY_CTRL); val &= ~PHY_TEST_PWR_DOWN;