From patchwork Tue May 13 09:58:23 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Luo Jie X-Patchwork-Id: 889669 Received: from mx0b-0031df01.pphosted.com (mx0b-0031df01.pphosted.com [205.220.180.131]) (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 2F26C23C514; Tue, 13 May 2025 09:59:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=205.220.180.131 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747130353; cv=none; b=lfDACT4RShPrxSvVqrmb39kycFBb8DCkTGquslnfVbRKDM+R8irb2RWrOHTWmV73zhw3Dmdme1OlkOR8IenpfcH3Mj8cONewNDJQjvVkicJqJFsLYJmjCw6235uNtCJ6LaKnKr4/7LkL1h+V8TRGlyb7waq5lpjYgrJeIMzwWxs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1747130353; c=relaxed/simple; bh=NW8YrOjm3ufGiO/XWC3WjfxzSmTah3mqD8eXlUgoHZo=; h=From:Date:Subject:MIME-Version:Content-Type:Message-ID:References: In-Reply-To:To:CC; b=SOc2ih3P+g010yXA+jXGObobdR3YyuIv/52jPnAJFZ9l5tSY8HpwM12LaRcbXhcc3DS0r4OaR1DAJMsxCJx4oUF/l7cKaaReTYWj30s5+cbDR0yauPivcE58O1pnR/l74aTbktmJUd0pLG0SLWDIFRbSq0euFdWfS3//DJJ/928= 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=KHzdeeWu; arc=none smtp.client-ip=205.220.180.131 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="KHzdeeWu" Received: from pps.filterd (m0279868.ppops.net [127.0.0.1]) by mx0a-0031df01.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 54D7ENKM031649; Tue, 13 May 2025 09:58:55 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=quicinc.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=qcppdkim1; bh= d5AZ6DyNi/E6Xk4/Je0WW91xCbySyFZYV1ssIoTZvfA=; b=KHzdeeWulXBbc4Zp o0ck4qXlj/yvMM2T+knaC2AL8Z4dCNTplQiHxtB371T2i7U6i/rV0Yag6KGF7fgr cgfLp5ZfZeGL5wG0j0a/Pml1FaesEeP8/AfgGc3eVgONsHFPwIa3UNxPTli+LQXR 6r1FWIBw8MBQFYaG3pRUASXHasK3Nu4CODX9IpKujgNpVju2A4gWBe9qy7fe/v0k dIiENx1nKQxri7WWVmTisLBf6PY2ibuhCFQXdPZQomJGvheNP9BH81I5vsxl+wDj AFfmzc4lBwnNJOpBfiBTSrFaJPyLNBg3Jv49dbQYfTj6PcudYmNQxpPttpiTpjaY cNR3kA== Received: from nasanppmta01.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) by mx0a-0031df01.pphosted.com (PPS) with ESMTPS id 46hx4k7ace-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 13 May 2025 09:58:54 +0000 (GMT) Received: from nasanex01b.na.qualcomm.com (nasanex01b.na.qualcomm.com [10.46.141.250]) by NASANPPMTA01.qualcomm.com (8.18.1.2/8.18.1.2) with ESMTPS id 54D9wrqm032636 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 13 May 2025 09:58:53 GMT Received: from nsssdc-sh01-lnx.ap.qualcomm.com (10.80.80.8) by nasanex01b.na.qualcomm.com (10.46.141.250) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.9; Tue, 13 May 2025 02:58:47 -0700 From: Luo Jie Date: Tue, 13 May 2025 17:58:23 +0800 Subject: [PATCH net-next v4 03/14] net: ethernet: qualcomm: Add PPE driver for IPQ9574 SoC Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-ID: <20250513-qcom_ipq_ppe-v4-3-4fbe40cbbb71@quicinc.com> References: <20250513-qcom_ipq_ppe-v4-0-4fbe40cbbb71@quicinc.com> In-Reply-To: <20250513-qcom_ipq_ppe-v4-0-4fbe40cbbb71@quicinc.com> To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Lei Wei , Suruchi Agarwal , Pavithra R , "Simon Horman" , Jonathan Corbet , Kees Cook , "Gustavo A. R. Silva" , "Philipp Zabel" CC: , , , , , , , , , , , Luo Jie X-Mailer: b4 0.14.1 X-Developer-Signature: v=1; a=ed25519-sha256; t=1747130310; l=10782; i=quic_luoj@quicinc.com; s=20250209; h=from:subject:message-id; bh=NW8YrOjm3ufGiO/XWC3WjfxzSmTah3mqD8eXlUgoHZo=; b=9FEe22F0bplR0/ngciw8NOomN6FsGNnKI+UYSc/GZXQPgBuRatdze/Q1Q2Hu5CGE72a+LRoLp d1XaL9vhRmcCk3NcoPZtOy3G9DGAxcCDyDVHfsPEiBHJLcl89Mhlr9v X-Developer-Key: i=quic_luoj@quicinc.com; a=ed25519; pk=pzwy8bU5tJZ5UKGTv28n+QOuktaWuriznGmriA9Qkfc= X-ClientProxiedBy: nasanex01a.na.qualcomm.com (10.52.223.231) To nasanex01b.na.qualcomm.com (10.46.141.250) X-QCInternal: smtphost X-Proofpoint-Virus-Version: vendor=nai engine=6200 definitions=5800 signatures=585085 X-Authority-Analysis: v=2.4 cv=ReqQC0tv c=1 sm=1 tr=0 ts=682317de cx=c_pps a=JYp8KDb2vCoCEuGobkYCKw==:117 a=JYp8KDb2vCoCEuGobkYCKw==:17 a=GEpy-HfZoHoA:10 a=IkcTkHD0fZMA:10 a=dt9VzEwgFbYA:10 a=COk6AnOGAAAA:8 a=PqS_UfTMPIexogC6Pa0A:9 a=QEXdDO2ut3YA:10 a=TjNXssC_j7lpFel5tvFf:22 X-Proofpoint-GUID: ENrAVqPrrg2uoIsGyGo69gr09bBNOn8J X-Proofpoint-ORIG-GUID: ENrAVqPrrg2uoIsGyGo69gr09bBNOn8J X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNTEzMDA5NCBTYWx0ZWRfXy/E70YUaZH2Z AnQpw4mJWZ+1cr8jdTx8KOAltwL39KZFAnXJqZxQSuHBH4K//PIiJDsLU7Q5oagVBkLu6idDfHE FfY+vl7wA6fHcszF8Bz6M3FQqNPE5pvX9pyuMW2cpWY93FhYeJfmGOBNdxEUjW8r4yqwyh4ewwG pdKT2Y1dqMJhh8FUMcRBkAri7IdRSRDmdwMAP5uOuQ7FcR6Xcz3J/6JHFP3YU0bLY62sxQr1bW2 jlFIA2mF2PvPnEvYIKkY7rKdjp2B+pRL80XYxni4BD/VqF8f23F0jMNLa3+Udq56NIoiCaCZKWl fRUxavHOb9fr0++kkEYzEw8JkFAQ1nN1QTa3phQaAjsme+HQkv40efcN7cbr26j6ciklBOI76ku R/0c/lpb88dpjHzeCZK9OLFYF62K7MaLJjm6sh9JKei6o2YoApzmlbmaI4NnjbbDi6r7SSx3 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-05-12_07,2025-05-09_01,2025-02-21_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 mlxscore=0 mlxlogscore=999 phishscore=0 suspectscore=0 spamscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 clxscore=1011 adultscore=0 malwarescore=0 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2504070000 definitions=main-2505130094 The PPE (Packet Process Engine) hardware block is available on Qualcomm IPQ SoC that support PPE architecture, such as IPQ9574. The PPE in IPQ9574 includes six integrated ethernet MAC (for 6 PPE ports), buffer management, queue management and scheduler functions. The MACs can connect with the external PHY or switch devices using the UNIPHY PCS block available in the SoC. The PPE also includes various packet processing offload capabilities such as L3 routing and L2 bridging, VLAN and tunnel processing offload. It also includes Ethernet DMA function for transferring packets between ARM cores and PPE ethernet ports. This patch adds the base source files and Makefiles for the PPE driver such as platform driver registration, clock initialization, and PPE reset routines. Signed-off-by: Luo Jie --- drivers/net/ethernet/qualcomm/Kconfig | 15 ++ drivers/net/ethernet/qualcomm/Makefile | 1 + drivers/net/ethernet/qualcomm/ppe/Makefile | 7 + drivers/net/ethernet/qualcomm/ppe/ppe.c | 218 +++++++++++++++++++++++++++++ drivers/net/ethernet/qualcomm/ppe/ppe.h | 36 +++++ 5 files changed, 277 insertions(+) diff --git a/drivers/net/ethernet/qualcomm/Kconfig b/drivers/net/ethernet/qualcomm/Kconfig index 9210ff360fdc..59931c4edbeb 100644 --- a/drivers/net/ethernet/qualcomm/Kconfig +++ b/drivers/net/ethernet/qualcomm/Kconfig @@ -61,6 +61,21 @@ config QCOM_EMAC low power, Receive-Side Scaling (RSS), and IEEE 1588-2008 Precision Clock Synchronization Protocol. +config QCOM_PPE + tristate "Qualcomm Technologies, Inc. PPE Ethernet support" + depends on HAS_IOMEM && OF + depends on COMMON_CLK + select REGMAP_MMIO + help + This driver supports the Qualcomm Technologies, Inc. packet + process engine (PPE) available with IPQ SoC. The PPE includes + the ethernet MACs, Ethernet DMA (EDMA) and switch core that + supports L3 flow offload, L2 switch function, RSS and tunnel + offload. + + To compile this driver as a module, choose M here. The module + will be called qcom-ppe. + source "drivers/net/ethernet/qualcomm/rmnet/Kconfig" endif # NET_VENDOR_QUALCOMM diff --git a/drivers/net/ethernet/qualcomm/Makefile b/drivers/net/ethernet/qualcomm/Makefile index 9250976dd884..166a59aea363 100644 --- a/drivers/net/ethernet/qualcomm/Makefile +++ b/drivers/net/ethernet/qualcomm/Makefile @@ -11,4 +11,5 @@ qcauart-objs := qca_uart.o obj-y += emac/ +obj-$(CONFIG_QCOM_PPE) += ppe/ obj-$(CONFIG_RMNET) += rmnet/ diff --git a/drivers/net/ethernet/qualcomm/ppe/Makefile b/drivers/net/ethernet/qualcomm/ppe/Makefile new file mode 100644 index 000000000000..63d50d3b4f2e --- /dev/null +++ b/drivers/net/ethernet/qualcomm/ppe/Makefile @@ -0,0 +1,7 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# Makefile for the device driver of PPE (Packet Process Engine) in IPQ SoC +# + +obj-$(CONFIG_QCOM_PPE) += qcom-ppe.o +qcom-ppe-objs := ppe.o diff --git a/drivers/net/ethernet/qualcomm/ppe/ppe.c b/drivers/net/ethernet/qualcomm/ppe/ppe.c new file mode 100644 index 000000000000..40da7d240594 --- /dev/null +++ b/drivers/net/ethernet/qualcomm/ppe/ppe.c @@ -0,0 +1,218 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +/* PPE platform device probe, DTSI parser and PPE clock initializations. */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include "ppe.h" + +#define PPE_PORT_MAX 8 +#define PPE_CLK_RATE 353000000 + +/* ICC clocks for enabling PPE device. The avg_bw and peak_bw with value 0 + * will be updated by the clock rate of PPE. + */ +static const struct icc_bulk_data ppe_icc_data[] = { + { + .name = "ppe", + .avg_bw = 0, + .peak_bw = 0, + }, + { + .name = "ppe_cfg", + .avg_bw = 0, + .peak_bw = 0, + }, + { + .name = "qos_gen", + .avg_bw = 6000, + .peak_bw = 6000, + }, + { + .name = "timeout_ref", + .avg_bw = 6000, + .peak_bw = 6000, + }, + { + .name = "nssnoc_memnoc", + .avg_bw = 533333, + .peak_bw = 533333, + }, + { + .name = "memnoc_nssnoc", + .avg_bw = 533333, + .peak_bw = 533333, + }, + { + .name = "memnoc_nssnoc_1", + .avg_bw = 533333, + .peak_bw = 533333, + }, +}; + +static const struct regmap_range ppe_readable_ranges[] = { + regmap_reg_range(0x0, 0x1ff), /* Global */ + regmap_reg_range(0x400, 0x5ff), /* LPI CSR */ + regmap_reg_range(0x1000, 0x11ff), /* GMAC0 */ + regmap_reg_range(0x1200, 0x13ff), /* GMAC1 */ + regmap_reg_range(0x1400, 0x15ff), /* GMAC2 */ + regmap_reg_range(0x1600, 0x17ff), /* GMAC3 */ + regmap_reg_range(0x1800, 0x19ff), /* GMAC4 */ + regmap_reg_range(0x1a00, 0x1bff), /* GMAC5 */ + regmap_reg_range(0xb000, 0xefff), /* PRX CSR */ + regmap_reg_range(0xf000, 0x1efff), /* IPE */ + regmap_reg_range(0x20000, 0x5ffff), /* PTX CSR */ + regmap_reg_range(0x60000, 0x9ffff), /* IPE L2 CSR */ + regmap_reg_range(0xb0000, 0xeffff), /* IPO CSR */ + regmap_reg_range(0x100000, 0x17ffff), /* IPE PC */ + regmap_reg_range(0x180000, 0x1bffff), /* PRE IPO CSR */ + regmap_reg_range(0x1d0000, 0x1dffff), /* Tunnel parser */ + regmap_reg_range(0x1e0000, 0x1effff), /* Ingress parse */ + regmap_reg_range(0x200000, 0x2fffff), /* IPE L3 */ + regmap_reg_range(0x300000, 0x3fffff), /* IPE tunnel */ + regmap_reg_range(0x400000, 0x4fffff), /* Scheduler */ + regmap_reg_range(0x500000, 0x503fff), /* XGMAC0 */ + regmap_reg_range(0x504000, 0x507fff), /* XGMAC1 */ + regmap_reg_range(0x508000, 0x50bfff), /* XGMAC2 */ + regmap_reg_range(0x50c000, 0x50ffff), /* XGMAC3 */ + regmap_reg_range(0x510000, 0x513fff), /* XGMAC4 */ + regmap_reg_range(0x514000, 0x517fff), /* XGMAC5 */ + regmap_reg_range(0x600000, 0x6fffff), /* BM */ + regmap_reg_range(0x800000, 0x9fffff), /* QM */ + regmap_reg_range(0xb00000, 0xbef800), /* EDMA */ +}; + +static const struct regmap_access_table ppe_reg_table = { + .yes_ranges = ppe_readable_ranges, + .n_yes_ranges = ARRAY_SIZE(ppe_readable_ranges), +}; + +static const struct regmap_config regmap_config_ipq9574 = { + .reg_bits = 32, + .reg_stride = 4, + .val_bits = 32, + .rd_table = &ppe_reg_table, + .wr_table = &ppe_reg_table, + .max_register = 0xbef800, + .fast_io = true, +}; + +static int ppe_clock_init_and_reset(struct ppe_device *ppe_dev) +{ + unsigned long ppe_rate = ppe_dev->clk_rate; + struct device *dev = ppe_dev->dev; + struct reset_control *rstc; + struct clk_bulk_data *clks; + struct clk *clk; + int ret, i; + + for (i = 0; i < ppe_dev->num_icc_paths; i++) { + ppe_dev->icc_paths[i].name = ppe_icc_data[i].name; + ppe_dev->icc_paths[i].avg_bw = ppe_icc_data[i].avg_bw ? : + Bps_to_icc(ppe_rate); + ppe_dev->icc_paths[i].peak_bw = ppe_icc_data[i].peak_bw ? : + Bps_to_icc(ppe_rate); + } + + ret = devm_of_icc_bulk_get(dev, ppe_dev->num_icc_paths, + ppe_dev->icc_paths); + if (ret) + return ret; + + ret = icc_bulk_set_bw(ppe_dev->num_icc_paths, ppe_dev->icc_paths); + if (ret) + return ret; + + /* The PPE clocks have a common parent clock. Setting the clock + * rate of "ppe" ensures the clock rate of all PPE clocks is + * configured to the same rate. + */ + clk = devm_clk_get(dev, "ppe"); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + ret = clk_set_rate(clk, ppe_rate); + if (ret) + return ret; + + ret = devm_clk_bulk_get_all_enabled(dev, &clks); + if (ret < 0) + return ret; + + /* Reset the PPE. */ + rstc = devm_reset_control_get_exclusive(dev, NULL); + if (IS_ERR(rstc)) + return PTR_ERR(rstc); + + ret = reset_control_assert(rstc); + if (ret) + return ret; + + /* The delay 10 ms of assert is necessary for resetting PPE. */ + usleep_range(10000, 11000); + + return reset_control_deassert(rstc); +} + +static int qcom_ppe_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct ppe_device *ppe_dev; + void __iomem *base; + int ret, num_icc; + + num_icc = ARRAY_SIZE(ppe_icc_data); + ppe_dev = devm_kzalloc(dev, struct_size(ppe_dev, icc_paths, num_icc), + GFP_KERNEL); + if (!ppe_dev) + return -ENOMEM; + + base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(base)) + return dev_err_probe(dev, PTR_ERR(base), "PPE ioremap failed\n"); + + ppe_dev->regmap = devm_regmap_init_mmio(dev, base, ®map_config_ipq9574); + if (IS_ERR(ppe_dev->regmap)) + return dev_err_probe(dev, PTR_ERR(ppe_dev->regmap), + "PPE initialize regmap failed\n"); + ppe_dev->dev = dev; + ppe_dev->clk_rate = PPE_CLK_RATE; + ppe_dev->num_ports = PPE_PORT_MAX; + ppe_dev->num_icc_paths = num_icc; + + ret = ppe_clock_init_and_reset(ppe_dev); + if (ret) + return dev_err_probe(dev, ret, "PPE clock config failed\n"); + + platform_set_drvdata(pdev, ppe_dev); + + return 0; +} + +static const struct of_device_id qcom_ppe_of_match[] = { + { .compatible = "qcom,ipq9574-ppe" }, + {} +}; +MODULE_DEVICE_TABLE(of, qcom_ppe_of_match); + +static struct platform_driver qcom_ppe_driver = { + .driver = { + .name = "qcom_ppe", + .of_match_table = qcom_ppe_of_match, + }, + .probe = qcom_ppe_probe, +}; +module_platform_driver(qcom_ppe_driver); + +MODULE_LICENSE("GPL"); +MODULE_DESCRIPTION("Qualcomm Technologies, Inc. IPQ PPE driver"); diff --git a/drivers/net/ethernet/qualcomm/ppe/ppe.h b/drivers/net/ethernet/qualcomm/ppe/ppe.h new file mode 100644 index 000000000000..cc6767b7c2b8 --- /dev/null +++ b/drivers/net/ethernet/qualcomm/ppe/ppe.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0-only + * + * Copyright (c) 2025 Qualcomm Innovation Center, Inc. All rights reserved. + */ + +#ifndef __PPE_H__ +#define __PPE_H__ + +#include +#include + +struct device; +struct regmap; + +/** + * struct ppe_device - PPE device private data. + * @dev: PPE device structure. + * @regmap: PPE register map. + * @clk_rate: PPE clock rate. + * @num_ports: Number of PPE ports. + * @num_icc_paths: Number of interconnect paths. + * @icc_paths: Interconnect path array. + * + * PPE device is the instance of PPE hardware, which is used to + * configure PPE packet process modules such as BM (buffer management), + * QM (queue management), and scheduler. + */ +struct ppe_device { + struct device *dev; + struct regmap *regmap; + unsigned long clk_rate; + unsigned int num_ports; + unsigned int num_icc_paths; + struct icc_bulk_data icc_paths[] __counted_by(num_icc_paths); +}; +#endif