From patchwork Tue Sep 19 10:29:48 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sricharan Ramabadhran X-Patchwork-Id: 13391133 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 4D192CD54AF for ; Tue, 19 Sep 2023 10:30:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230260AbjISKal (ORCPT ); Tue, 19 Sep 2023 06:30:41 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51780 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229641AbjISKak (ORCPT ); Tue, 19 Sep 2023 06:30:40 -0400 Received: from mx0a-0031df01.pphosted.com (mx0a-0031df01.pphosted.com [205.220.168.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 13F96E8; Tue, 19 Sep 2023 03:30:35 -0700 (PDT) Received: from pps.filterd (m0279864.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 38J3wpiX010036; Tue, 19 Sep 2023 10:30:12 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=J4hOINlXke9uREob4JWDzUId/9wjHUUxaSUVg5YcoIM=; b=Ba/uSBhA5GPVKW2xU6y+vkppV/ZxqEe9gaOV7c+ZS+PuuncYajMujbUDdQwr5m7fNMLL wBx9nbhuCI9cb05hX6w5s4xG6Vv4rl9iSINpFmBD207vLZAnp3ggKf1Q0pMzm5VSdBoH 6yzRKnEniDr62lZhnf3xHlgZZJE5f5FYxhCQIyzaY56XAJYD4y/iBZ0cEgy4mvN/xNEq Uj3YgPniqt/OYWk8GNp5yvurcoPY3Xvv35B4XmXYYFH2QcYjeC17jyaDpPP7/buTfnhN fSY6b7eJabq274+EURFUp0xPw515+JdUETPFMAB23YVRPh0s//3VtD+jwLtC8f9fz4dX dg== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3t6pmq2b0n-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 19 Sep 2023 10:30:12 +0000 Received: from nalasex01c.na.qualcomm.com (nalasex01c.na.qualcomm.com [10.47.97.35]) by NALASPPMTA05.qualcomm.com (8.17.1.5/8.17.1.5) with ESMTPS id 38JAUBq8009078 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 19 Sep 2023 10:30:11 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; Tue, 19 Sep 2023 03:30:06 -0700 From: Sricharan Ramabadhran To: , , , , , , , , , , , , , , , CC: Subject: [PATCH V6] PCI: qcom: Fix broken pcie enumeration for 2_3_3 configs ops Date: Tue, 19 Sep 2023 15:59:48 +0530 Message-ID: <20230919102948.1844909-1-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: nasanex01a.na.qualcomm.com (10.52.223.231) 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-GUID: f00P1RcoxC1xV01SXBnn0XiJmT3ATX3I X-Proofpoint-ORIG-GUID: f00P1RcoxC1xV01SXBnn0XiJmT3ATX3I X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.267,Aquarius:18.0.980,Hydra:6.0.601,FMLib:17.11.176.26 definitions=2023-09-19_05,2023-09-18_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 priorityscore=1501 impostorscore=0 mlxlogscore=999 mlxscore=0 phishscore=0 clxscore=1011 lowpriorityscore=0 adultscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2308100000 definitions=main-2309190089 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 qcom_pcie_post_init_2_3_3. PCIe slave address space size register offset is 0x358, but was wrongly changed to 0x16c 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 on IPQ8074. Fixes: 39171b33f652 ("PCI: qcom: Remove PCIE20_ prefix from register definitions") Cc: Reviewed-by: Manivannan Sadhasivam Reviewed-by: Konrad Dybcio Tested-by: Robert Marko Signed-off-by: Sricharan Ramabadhran --- [V6] Fixed subject and commit text as per Bjorn Helgaas 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 e2f29404c84e..64420ecc24d1 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 @@ -797,8 +796,7 @@ 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;