From patchwork Fri Apr 21 12:49:38 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Devi Priya X-Patchwork-Id: 676198 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 73097C77B7D for ; Fri, 21 Apr 2023 12:51:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232075AbjDUMvW (ORCPT ); Fri, 21 Apr 2023 08:51:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232377AbjDUMvH (ORCPT ); Fri, 21 Apr 2023 08:51:07 -0400 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 75A71118E4; Fri, 21 Apr 2023 05:50:48 -0700 (PDT) Received: from pps.filterd (m0279873.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.17.1.19/8.17.1.19) with ESMTP id 33LCogbj032506; Fri, 21 Apr 2023 12:50:42 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 : mime-version : content-type; s=qcppdkim1; bh=SWeXwCj9NOd3M1MtT5aHsg8+bcM5Cm5QfZcHqb6R+jE=; b=S5TS1ihUis06sBSoKBNJriMfx/QmqdVtlJB/F/Z63J31QTloN9cJSaD8FVXl7QQ2+21a H3YbBAxuGQxo29xUM467+CNkSkVuhQMdiN0NCXBAb51M/2Od2/nnFsUywOi/1R10wEtD M2flqCj9phMelZK3UI8KxsndIyaIodM/A/rH4KD9695w0rujsmyNR/RJ8YqmShUWCUSo VSl2xbLlcKMknjPsS4jdXrBj06XPyaUFYunRjkjTvNwaF40bpWMX2Alx4DE2vGWX/Jna NKUv5hCe0YDq4HXAWcKBu19ScqEE1mY3aQ3BmbVOz3EbutE99+gfN0zlBtz35WZ/RZdR zQ== Received: from nalasppmta05.qualcomm.com (Global_NAT1.qualcomm.com [129.46.96.20]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 3q3cpysndr-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 21 Apr 2023 12:50:42 +0000 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 33LCofM7022935 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 21 Apr 2023 12:50:41 GMT Received: from devipriy-linux.qualcomm.com (10.80.80.8) 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 15.2.986.42; Fri, 21 Apr 2023 05:50:34 -0700 From: Devi Priya To: , , , , , , , , , , , , , , , CC: , , , , , Subject: [PATCH V3 6/6] PCI: qcom: Add support for IPQ9574 Date: Fri, 21 Apr 2023 18:19:38 +0530 Message-ID: <20230421124938.21974-7-quic_devipriy@quicinc.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20230421124938.21974-1-quic_devipriy@quicinc.com> References: <20230421124938.21974-1-quic_devipriy@quicinc.com> MIME-Version: 1.0 X-Originating-IP: [10.80.80.8] X-ClientProxiedBy: nasanex01b.na.qualcomm.com (10.46.141.250) 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: n2GUN3USlJHFBzHd_qo206tQhn3FccU5 X-Proofpoint-ORIG-GUID: n2GUN3USlJHFBzHd_qo206tQhn3FccU5 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.254,Aquarius:18.0.942,Hydra:6.0.573,FMLib:17.11.170.22 definitions=2023-04-21_05,2023-04-21_01,2023-02-09_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 mlxlogscore=999 spamscore=0 mlxscore=0 lowpriorityscore=0 clxscore=1015 impostorscore=0 adultscore=0 phishscore=0 bulkscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2303200000 definitions=main-2304210111 Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org The IPQ9574 platform has 4 Gen3 PCIe controllers: two single-lane and two dual-lane based on SNPS core 5.70a The Qcom IP rev is 1.27.0 and Synopsys IP rev is 5.80a Added a new compatible 'qcom,pcie-ipq9574' and 'ops_1_27_0' which reuses all the members of 'ops_2_9_0' except for the post_init as the SLV_ADDR_SPACE_SIZE configuration differs between 2_9_0 and 1_27_0. Also, modified get_resources of 'ops 2_9_0' to get the clocks from the device tree and modelled the post init sequence as a common function to avoid code redundancy. Co-developed-by: Anusha Rao Signed-off-by: Anusha Rao Signed-off-by: Devi Priya --- Changes in V3: - Rebased on top of linux-next/master drivers/pci/controller/dwc/pcie-qcom.c | 61 ++++++++++++++++++-------- 1 file changed, 43 insertions(+), 18 deletions(-) diff --git a/drivers/pci/controller/dwc/pcie-qcom.c b/drivers/pci/controller/dwc/pcie-qcom.c index 4ab30892f6ef..3682ecdead1f 100644 --- a/drivers/pci/controller/dwc/pcie-qcom.c +++ b/drivers/pci/controller/dwc/pcie-qcom.c @@ -107,6 +107,7 @@ /* PARF_SLV_ADDR_SPACE_SIZE register value */ #define SLV_ADDR_SPACE_SZ 0x10000000 +#define SLV_ADDR_SPACE_SZ_1_27_0 0x08000000 /* PARF_MHI_CLOCK_RESET_CTRL register fields */ #define AHB_CLK_EN BIT(0) @@ -202,10 +203,10 @@ struct qcom_pcie_resources_2_7_0 { struct reset_control *rst; }; -#define QCOM_PCIE_2_9_0_MAX_CLOCKS 5 struct qcom_pcie_resources_2_9_0 { - struct clk_bulk_data clks[QCOM_PCIE_2_9_0_MAX_CLOCKS]; + struct clk_bulk_data *clks; struct reset_control *rst; + int num_clks; }; union qcom_pcie_resources { @@ -1050,17 +1051,10 @@ static int qcom_pcie_get_resources_2_9_0(struct qcom_pcie *pcie) struct qcom_pcie_resources_2_9_0 *res = &pcie->res.v2_9_0; struct dw_pcie *pci = pcie->pci; struct device *dev = pci->dev; - int ret; - res->clks[0].id = "iface"; - res->clks[1].id = "axi_m"; - res->clks[2].id = "axi_s"; - res->clks[3].id = "axi_bridge"; - res->clks[4].id = "rchng"; - - ret = devm_clk_bulk_get(dev, ARRAY_SIZE(res->clks), res->clks); - if (ret < 0) - return ret; + res->num_clks = devm_clk_bulk_get_all(dev, &res->clks); + if (res->clks < 0) + return res->num_clks; res->rst = devm_reset_control_array_get_exclusive(dev); if (IS_ERR(res->rst)) @@ -1073,7 +1067,7 @@ static void qcom_pcie_deinit_2_9_0(struct qcom_pcie *pcie) { struct qcom_pcie_resources_2_9_0 *res = &pcie->res.v2_9_0; - clk_bulk_disable_unprepare(ARRAY_SIZE(res->clks), res->clks); + clk_bulk_disable_unprepare(res->num_clks, res->clks); } static int qcom_pcie_init_2_9_0(struct qcom_pcie *pcie) @@ -1102,19 +1096,16 @@ static int qcom_pcie_init_2_9_0(struct qcom_pcie *pcie) usleep_range(2000, 2500); - return clk_bulk_prepare_enable(ARRAY_SIZE(res->clks), res->clks); + return clk_bulk_prepare_enable(res->num_clks, res->clks); } -static int qcom_pcie_post_init_2_9_0(struct qcom_pcie *pcie) +static int qcom_pcie_post_init(struct qcom_pcie *pcie) { struct dw_pcie *pci = pcie->pci; u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); u32 val; int i; - writel(SLV_ADDR_SPACE_SZ, - pcie->parf + PARF_SLV_ADDR_SPACE_SIZE); - val = readl(pcie->parf + PARF_PHY_CTRL); val &= ~PHY_TEST_PWR_DOWN; writel(val, pcie->parf + PARF_PHY_CTRL); @@ -1151,6 +1142,26 @@ static int qcom_pcie_post_init_2_9_0(struct qcom_pcie *pcie) return 0; } +static int qcom_pcie_post_init_1_27_0(struct qcom_pcie *pcie) +{ + writel(SLV_ADDR_SPACE_SZ_1_27_0, + pcie->parf + PARF_SLV_ADDR_SPACE_SIZE); + + qcom_pcie_post_init(pcie); + + return 0; +} + +static int qcom_pcie_post_init_2_9_0(struct qcom_pcie *pcie) +{ + writel(SLV_ADDR_SPACE_SZ, + pcie->parf + PARF_SLV_ADDR_SPACE_SIZE); + + qcom_pcie_post_init(pcie); + + return 0; +} + static int qcom_pcie_link_up(struct dw_pcie *pci) { u16 offset = dw_pcie_find_capability(pci, PCI_CAP_ID_EXP); @@ -1291,6 +1302,15 @@ static const struct qcom_pcie_ops ops_2_9_0 = { .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable, }; +/* Qcom IP rev.: 1.27.0 Synopsys IP rev.: 5.80a */ +static const struct qcom_pcie_ops ops_1_27_0 = { + .get_resources = qcom_pcie_get_resources_2_9_0, + .init = qcom_pcie_init_2_9_0, + .post_init = qcom_pcie_post_init_1_27_0, + .deinit = qcom_pcie_deinit_2_9_0, + .ltssm_enable = qcom_pcie_2_3_2_ltssm_enable, +}; + static const struct qcom_pcie_cfg cfg_1_0_0 = { .ops = &ops_1_0_0, }; @@ -1323,6 +1343,10 @@ static const struct qcom_pcie_cfg cfg_2_9_0 = { .ops = &ops_2_9_0, }; +static const struct qcom_pcie_cfg cfg_1_27_0 = { + .ops = &ops_1_27_0, +}; + static const struct dw_pcie_ops dw_pcie_ops = { .link_up = qcom_pcie_link_up, .start_link = qcom_pcie_start_link, @@ -1607,6 +1631,7 @@ static const struct of_device_id qcom_pcie_match[] = { { .compatible = "qcom,pcie-ipq8064-v2", .data = &cfg_2_1_0 }, { .compatible = "qcom,pcie-ipq8074", .data = &cfg_2_3_3 }, { .compatible = "qcom,pcie-ipq8074-gen3", .data = &cfg_2_9_0 }, + { .compatible = "qcom,pcie-ipq9574", .data = &cfg_1_27_0 }, { .compatible = "qcom,pcie-msm8996", .data = &cfg_2_3_2 }, { .compatible = "qcom,pcie-qcs404", .data = &cfg_2_4_0 }, { .compatible = "qcom,pcie-sa8540p", .data = &cfg_1_9_0 },