From nobody Sat May 18 08:14:05 2024 Received: from CHN02-SH0-obe.outbound.protection.partner.outlook.cn (mail-sh0chn02on2121.outbound.protection.partner.outlook.cn [139.219.146.121]) (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 5839D1586CD; Wed, 24 Apr 2024 08:13:40 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=139.219.146.121 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713946426; cv=fail; b=CUmLmMZvWDif2xfRKcSf6wfveU24QCkw5LjcrLF1VckDDagtzzyYmjNOr88Dqat+1nVKlDs54kUdO28BisWlY+tEGc70R748MyIlsj7d0hrsqSRqp26SxDCHs709oj4F/xY18Ll0+f75B3laXRcjqtURAp4dTXEylnxkZXqF2z0= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713946426; c=relaxed/simple; bh=5d2+winPr1qWSQSgklak+E67WUuDKl54a/7JQuYj1iU=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=b3k2sJac56cr2+P/wLJdUe8ZNh5mvBEWLhZKeqirMJCYdvoFabWpqx4FWDfsftYUvA35HBSbQY+OtTFI2pQgv2quJy60OdbfsVAVZPLrpqJBIVVlaCc4HiXWBxktvgzYiY5Rimq7LwTxsQaL9vTz6vx1rflqqSDTiGm3aTTI5Hs= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=starfivetech.com; spf=pass smtp.mailfrom=starfivetech.com; arc=fail smtp.client-ip=139.219.146.121 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=starfivetech.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=starfivetech.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=YGpAzmAxaVzMlcbMqcf6O53ZbXME7AL6jrC3J3MRBTsQ11U35bN/n7Zbysxegv+X+SbztpePFyDWcBEUF2OezlYLvKwDpe+rmCWaKH0ElFar7YU1pNCdL9lcPtZ09DBVIAYvBuYCeaoLu04ZUvqc7wGV1rJWFc1Zf+MiZaVUN1RRHdqhj9sgxO8UIenJ/tB0SErYzdGQ79DBnRE2yl4h3+iwn1xHE76Gd8mHhuKD9DJcYPCvj5jUvFEIiI10Z3JBg7eUFN6Jg2lr797uTOAwLw3IUz7LFYOY6iyF7fUIMK7+j6NUZTZKQ5lFK6g37S4x34BZAXIUfbJP/Pu8fakr+w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=sNtDg60wNrrjdhIVYCSsKiN5ruLjPoYQcVIa7XLQcc0=; b=ZQStBNWOv7c74ABS4KH/UQLA4TZzqA53iXy97rxsL1LiTCJx6fvxUZbrTjWbKZhp/9pzeFvEE6Tui8T8SlH33upyX8HiGydLq7A3mdLqozJGUal0Di2qP4L9bYB9CXAXX/gcsZLRBbQ9SahNsHp6tnDm8kkrvV3TzoJXTjsODCFWC2tu/z9TEXm/v1V+C7vNeQYSntZFU26IdzycAFWyYPS9OLRUEdjfWwbgNrIsHXZNlxRm0liXZJIpzp00L6BMl/kdK6yNtb1ebsfbORv67R5qar/JJtfrUWbnpaOItKPV7bT6rmP8A39E4Y5lsdaN9bQO+Lg7IB39lRLkbbh9ng== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=starfivetech.com; dmarc=pass action=none header.from=starfivetech.com; dkim=pass header.d=starfivetech.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=starfivetech.com; Received: from SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn (2406:e500:c311:20::14) by SH0PR01MB0460.CHNPR01.prod.partner.outlook.cn (2406:e500:c311:8::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7472.33; Wed, 24 Apr 2024 07:59:19 +0000 Received: from SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn ([fe80::e0a:f88a:cad1:dc1c]) by SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn ([fe80::e0a:f88a:cad1:dc1c%7]) with mapi id 15.20.7472.044; Wed, 24 Apr 2024 07:59:19 +0000 From: Joshua Yeong To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, conor@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, joshua.yeong@starfivetech.com, leyfoon.tan@starfivetech.com, jeeheng.sia@starfivetech.com Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v3 1/2] cache: Add StarFive StarLink cache management for StarFive JH8100 Date: Wed, 24 Apr 2024 15:58:55 +0800 Message-Id: <20240424075856.145850-2-joshua.yeong@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240424075856.145850-1-joshua.yeong@starfivetech.com> References: <20240424075856.145850-1-joshua.yeong@starfivetech.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: BJXPR01CA0048.CHNPR01.prod.partner.outlook.cn (2406:e500:c211:12::15) To SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn (2406:e500:c311:20::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SH0PR01MB0841:EE_|SH0PR01MB0460:EE_ X-MS-Office365-Filtering-Correlation-Id: a7443985-e42e-4d9c-167a-08dc643471fe X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn;PTR:;CAT:NONE;SFS:(13230031)(366007)(52116005)(7416005)(41320700004)(1800799015)(921011)(38350700005);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?tAOkKnBvMHrFFb63gtYFdY8chgiSH635rQ1TX77y+wjpt1mAeUkCSs1q09EB?= =?us-ascii?Q?nSfqk5niNhIA3D/wb25cQ4iuRvJTsrpEZpWtbTHqxjdRxyxqYfzsHeGBm9Vk?= =?us-ascii?Q?QLz1ebHsgVwmDHokUaoIeOmyqdW5gbRNzoAw2ElGIU3Jky9jmHiT7wbC5CWn?= =?us-ascii?Q?PD0ZRDcMJgnDHewRYhJ+LAx6RLM9FxFUBvXcG8wnVkg/B7o3ormWa+3sMS69?= =?us-ascii?Q?6mWI6An/p01g6Fi0bN38lZY7l/ZG4OHFZgN8LyCQEniS3NlqtShKMOalZVNv?= =?us-ascii?Q?jroflBX1tzP7vERDeYBUXrjK00Y2VIpJT6sgFC+tP+MiO8XK8B7nYN8obaBq?= =?us-ascii?Q?HkAUSGMpFhKDAtGtaYd7NQMgeV2w+95F+9BOHySWyaI3x4k/iZfLZ979qYBB?= =?us-ascii?Q?IP1l8HBxujc0/d97U0vr2o6V55W9T3j8c0+aVHrEkv6WPdpM9iHWM0FhE6g1?= =?us-ascii?Q?VIh3Oy3O0kbjvDvJBt92gG3nIKfiSLIQq9fTUowLftUhgxNlScai4nIqtoKW?= =?us-ascii?Q?/ZBDS4Q19m9LUNJ9PAceFfpvpPu5727DDZouLc46JcxinU0zdOc+Bx85Y021?= =?us-ascii?Q?1jXwEDPYYTNucH/J+9e13+sITkzwekDpKzB7K8D7v7pnxuIaxcMvM8yJZ709?= =?us-ascii?Q?gYAikpY0wz0jV52SoVQlryl231eP40DhO+8d5IKwDkcJMfCz8T7z8Z8rpsXA?= =?us-ascii?Q?h9uA2klPwflcPUUClKJFcwVPbLz4KWdQelkCvNEhzIqsJLs1WBwtHf46UuXA?= =?us-ascii?Q?k/aa5XHooMGOZvM0RHhscFPhf3mqRXrayhetGvy/aK4AEKrMcm1ZzHXQ/ERm?= =?us-ascii?Q?Ft+0IStd/JkhfRz8stKyST5OvjApA5As2F8G7zrb5koxDHgiAjwDHmYi6gyU?= =?us-ascii?Q?eUSC6oVcm6VItm8k3LJW+/9ZDEdwYoH5nePt5EVyqLaq4ZFVvYbEu172i3RL?= =?us-ascii?Q?61NgmD9kKp46S7zQfbf286P3Igh/AsY4LwjtXIzz1DcMnJl6omA8QYvRU8xh?= =?us-ascii?Q?Wo9tfHAm+/Ds688JJWnIMTe10+j85qPx7Hmatt80xlsPbbd6K4o8LQew77f8?= =?us-ascii?Q?keBZOsuCVq9s91j5FI7/+0QPF9aBMYhRN3y43TtYF+PB3zxmpl6/IhKDwvc+?= =?us-ascii?Q?lI/KfkrqmXELyiRQMkOsY458rjr8rEjY2+VBRBRyAqYsUhWr/5NrJZnK7PyF?= =?us-ascii?Q?hddHJrI6eGzhGI/F9V8uAGvACKUB2kJUzzpDOGp/5KbPw63J+02v8Po/HTf6?= =?us-ascii?Q?ZX5gh8Usij5KerY1MQOUF/QuKltnYqENO2akZAl6Fg/INejvb9DFpIucA6ZU?= =?us-ascii?Q?w6C/vGb5Oyf9o/GRaHirt6qqhjRj0OOml1++5Ez73t4/T+DKqvwLd52UejsZ?= =?us-ascii?Q?oS1TjaZEIzkxxVk4SrrR9R0uB/YtU/954ea86DwV4MUWyAd18Thyshduspoc?= =?us-ascii?Q?V/hTLCNYj0Bii7a1smpQJOqwTmbb4bKXMAC4b/K2o1CNaJeUIO6nj+uUwsao?= =?us-ascii?Q?v9edd/QO9hyUG1qJSN1BJXyn3fQLKwI2pIXlWWJlD62QjuKeMakzHYk6OPeC?= =?us-ascii?Q?s/R3BTKJkc0SaY1Yy//grMRy6FO4z/OG/ibAlQUr+atdc9xhFXZgC7J43rOj?= =?us-ascii?Q?hvo5KjdCyAg7yjJoZMuUQGI=3D?= X-OriginatorOrg: starfivetech.com X-MS-Exchange-CrossTenant-Network-Message-Id: a7443985-e42e-4d9c-167a-08dc643471fe X-MS-Exchange-CrossTenant-AuthSource: SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Apr 2024 07:59:19.4331 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 06fe3fa3-1221-43d3-861b-5a4ee687a85c X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: Y2vFHAnfuZhQ0V9pnQ7jJ1ju28cKjiaMX0x21p4yGhdgj49iv2qjRhPU+VmX/6v5roUPtynsAvvtAhT9Gw0RqqhIYFMazV97jHeuECUj21Y= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SH0PR01MB0460 Content-Type: text/plain; charset="utf-8" Add StarFive Starlink cache management driver for JH8100 SoC. This driver enables RISC-V non-standard cache operation on JH8100 that does not support Zicbom extension instructions. Signed-off-by: Joshua Yeong --- drivers/cache/Kconfig | 9 ++ drivers/cache/Makefile | 5 +- drivers/cache/starfive_starlink_cache.c | 135 ++++++++++++++++++++++++ 3 files changed, 147 insertions(+), 2 deletions(-) create mode 100644 drivers/cache/starfive_starlink_cache.c diff --git a/drivers/cache/Kconfig b/drivers/cache/Kconfig index 9345ce4976d7..9181cd391f53 100644 --- a/drivers/cache/Kconfig +++ b/drivers/cache/Kconfig @@ -14,4 +14,13 @@ config SIFIVE_CCACHE help Support for the composable cache controller on SiFive platforms. =20 +config STARFIVE_STARLINK_CACHE + bool "StarFive StarLink Cache controller" + depends on RISCV + depends on ARCH_STARFIVE + select RISCV_DMA_NONCOHERENT + select RISCV_NONSTANDARD_CACHE_OPS + help + Support for the StarLink cache controller on StarFive platforms. + endmenu diff --git a/drivers/cache/Makefile b/drivers/cache/Makefile index 7657cff3bd6c..55c5e851034d 100644 --- a/drivers/cache/Makefile +++ b/drivers/cache/Makefile @@ -1,4 +1,5 @@ # SPDX-License-Identifier: GPL-2.0 =20 -obj-$(CONFIG_AX45MP_L2_CACHE) +=3D ax45mp_cache.o -obj-$(CONFIG_SIFIVE_CCACHE) +=3D sifive_ccache.o +obj-$(CONFIG_AX45MP_L2_CACHE) +=3D ax45mp_cache.o +obj-$(CONFIG_SIFIVE_CCACHE) +=3D sifive_ccache.o +obj-$(CONFIG_STARFIVE_STARLINK_CACHE) +=3D starfive_starlink_cache.o diff --git a/drivers/cache/starfive_starlink_cache.c b/drivers/cache/starfi= ve_starlink_cache.c new file mode 100644 index 000000000000..2f1fa6a923ee --- /dev/null +++ b/drivers/cache/starfive_starlink_cache.c @@ -0,0 +1,135 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Cache Management Operations for StarFive's Starlink cache controller + * + * Copyright (C) 2024 Shanghai StarFive Technology Co., Ltd. + * + * Author: Joshua Yeong + */ + +#include +#include +#include +#include + +#include + +#define STARLINK_CACHE_FLUSH_START_ADDR 0x0 +#define STARLINK_CACHE_FLUSH_END_ADDR 0x8 +#define STARLINK_CACHE_FLUSH_CTL 0x10 +#define STARLINK_CACHE_ALIGN 0x40 + +#define STARLINK_CACHE_ADDRESS_RANGE_MASK GENMASK(39, 0) +#define STARLINK_CACHE_FLUSH_CTL_MODE_MASK GENMASK(2, 1) +#define STARLINK_CACHE_FLUSH_CTL_ENABLE_MASK BIT(0) + +#define STARLINK_CACHE_FLUSH_CTL_CLEAN_INVALIDATE 0 +#define STARLINK_CACHE_FLUSH_CTL_MAKE_INVALIDATE 1 +#define STARLINK_CACHE_FLUSH_CTL_CLEAN_SHARED 2 +#define STARLINK_CACHE_FLUSH_POLL_DELAY_US 1 +#define STARLINK_CACHE_FLUSH_TIMEOUT_US 5000000 + +struct starlink_cache_priv { + void __iomem *base_addr; +}; + +static struct starlink_cache_priv starlink_cache_priv; + +static void starlink_cache_flush_complete(void) +{ + volatile void __iomem *ctl =3D starlink_cache_priv.base_addr + + STARLINK_CACHE_FLUSH_CTL; + u64 v; + int ret; + + ret =3D readq_poll_timeout_atomic(ctl, v, !(v & STARLINK_CACHE_FLUSH_CTL_= ENABLE_MASK), + STARLINK_CACHE_FLUSH_POLL_DELAY_US, + STARLINK_CACHE_FLUSH_TIMEOUT_US); + if (ret) + WARN(1, "StarFive Starlink cache flush operation timeout\n"); +} + +static void starlink_cache_dma_cache_wback(phys_addr_t paddr, unsigned lon= g size) +{ + writeq(FIELD_PREP(STARLINK_CACHE_ADDRESS_RANGE_MASK, paddr), + starlink_cache_priv.base_addr + STARLINK_CACHE_FLUSH_START_ADDR); + writeq(FIELD_PREP(STARLINK_CACHE_ADDRESS_RANGE_MASK, paddr + size), + starlink_cache_priv.base_addr + STARLINK_CACHE_FLUSH_END_ADDR); + + mb(); + writeq(FIELD_PREP(STARLINK_CACHE_FLUSH_CTL_MODE_MASK, + STARLINK_CACHE_FLUSH_CTL_CLEAN_SHARED), + starlink_cache_priv.base_addr + STARLINK_CACHE_FLUSH_CTL); + + starlink_cache_flush_complete(); +} + +static void starlink_cache_dma_cache_invalidate(phys_addr_t paddr, unsigne= d long size) +{ + writeq(FIELD_PREP(STARLINK_CACHE_ADDRESS_RANGE_MASK, paddr), + starlink_cache_priv.base_addr + STARLINK_CACHE_FLUSH_START_ADDR); + writeq(FIELD_PREP(STARLINK_CACHE_ADDRESS_RANGE_MASK, paddr + size), + starlink_cache_priv.base_addr + STARLINK_CACHE_FLUSH_END_ADDR); + + mb(); + writeq(FIELD_PREP(STARLINK_CACHE_FLUSH_CTL_MODE_MASK, + STARLINK_CACHE_FLUSH_CTL_MAKE_INVALIDATE), + starlink_cache_priv.base_addr + STARLINK_CACHE_FLUSH_CTL); + + starlink_cache_flush_complete(); +} + +static void starlink_cache_dma_cache_wback_inv(phys_addr_t paddr, unsigned= long size) +{ + writeq(FIELD_PREP(STARLINK_CACHE_ADDRESS_RANGE_MASK, paddr), + starlink_cache_priv.base_addr + STARLINK_CACHE_FLUSH_START_ADDR); + writeq(FIELD_PREP(STARLINK_CACHE_ADDRESS_RANGE_MASK, paddr + size), + starlink_cache_priv.base_addr + STARLINK_CACHE_FLUSH_END_ADDR); + + mb(); + writeq(FIELD_PREP(STARLINK_CACHE_FLUSH_CTL_MODE_MASK, + STARLINK_CACHE_FLUSH_CTL_CLEAN_INVALIDATE), + starlink_cache_priv.base_addr + STARLINK_CACHE_FLUSH_CTL); + + starlink_cache_flush_complete(); +} + +static const struct riscv_nonstd_cache_ops starlink_cache_ops =3D { + .wback =3D &starlink_cache_dma_cache_wback, + .inv =3D &starlink_cache_dma_cache_invalidate, + .wback_inv =3D &starlink_cache_dma_cache_wback_inv, +}; + +static const struct of_device_id starlink_cache_ids[] =3D { + { .compatible =3D "starfive,jh8100-starlink-cache" }, + { /* sentinel */ } +}; + +static int __init starlink_cache_init(void) +{ + struct device_node *np; + u32 block_size =3D 0; + int ret; + + np =3D of_find_matching_node(NULL, starlink_cache_ids); + if (!of_device_is_available(np)) + return -ENODEV; + + ret =3D of_property_read_u32(np, "cache-block-size", &block_size); + if (ret) + return ret; + + if (block_size % STARLINK_CACHE_ALIGN) + return -EINVAL; + + starlink_cache_priv.base_addr =3D of_iomap(np, 0); + if (!starlink_cache_priv.base_addr) + return -ENOMEM; + + riscv_cbom_block_size =3D block_size; + riscv_noncoherent_supported(); + riscv_noncoherent_register_cache_ops(&starlink_cache_ops); + + return 0; +} +early_initcall(starlink_cache_init); --=20 2.25.1 From nobody Sat May 18 08:14:05 2024 Received: from CHN02-SH0-obe.outbound.protection.partner.outlook.cn (mail-sh0chn02on2104.outbound.protection.partner.outlook.cn [139.219.146.104]) (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 61658157468; Wed, 24 Apr 2024 07:59:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=139.219.146.104 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713945571; cv=fail; b=HsNmgGB2l7+rUqpaaq+z8D21zoqZCaGGgYJFJSwKqNBBKEva01WWZ5yqIQWuET59uiICAIbipCFWyksD4IWvqK+xb31dE2qn/w/8zWOdikJUpMozOMo5zIXYxJOicipmRwHdBYr6uxRxSHCPL/zWjxiCam8p+SxrJxQSC8Q2Ofc= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713945571; c=relaxed/simple; bh=5lKCkXk5FoGziSuhCLz72hHkExSqqRyFzqveEnFN0Go=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: Content-Type:MIME-Version; b=du6LLJaN8solAOjMtNmYNXVRcahLIV7YX4xivK6Zb3poDI4ZGlmQgwDD0jPP6uYPrUJFHjUvwWjmUUsqYuxkHd8zjptJFJHjy5OpBtgzmwcQqwHEjX0y6ZkN8o4/QV1h70lE+/yFCvtm0UDk545/5NYYfvJohU7uevcqdl13zLI= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=starfivetech.com; spf=pass smtp.mailfrom=starfivetech.com; arc=fail smtp.client-ip=139.219.146.104 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=starfivetech.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=starfivetech.com ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=N3Kn6fBCeMWR0n7fV/Uf9LVqTJjPCTO9iKv7AKKVtMV/4IaSEgIZlCmLDNGTO3vJf9gLANbZbolHLa0dgIgdhnI7ugG3jl9s18Y7g2Ezjw88ZjawFsOJUlzd+2RIGv4Nunckv/fl9QmFIMgaKW/w+Zp9j0w0hnzpZAdT+G5b2XK8tc3diYayzPg+lDb5e7p+jdkMtC63Wn0rMeQbfpzI1ybCbCZAggf1tBYt183wjet89nEBla6b7DyxUfTiio3opjfXM+Ic5quOmLI5SQR8HoG1DdZMnyAHTTVQVadkLwdpPOg36ZQJYk8lFp4gcd12kqVpL9nOHJ/Ge2w3+8ElBw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=UR6JvOax0G0YID2cOXh0FKMYs57WEA34jlTT5teKN64=; b=hptbKkh79xxYdSbxmHmj+pONw2lSKcy1FIYQbLvI49eJNldmvTYkHBg8Zpwaz8tqOJ79xKEOqbwN5CbB52BZ1g1VramBMwHoj8yE+xRFvJWB1qXFsYjG7l2d3RP/O2JBIMer7zBrFzxaBxtDqZxsuvLskB+yw8Pp6XENmmgmMmalYliMJtqSIJNwvFdovWhgA6WxkoDZHQGb2CsvjUZS+B/tl0a5khaZLQGTGlAO4zHMJY+wbTn0ymWkR30/ewaI9lwLmBWgSxhhDs2ztN6g5onXaqx3EVlfb5oTnwnhfVpZX8sAPOPVx67KVfpBFlOFz9XXXl+28c54L5S7Fxj5yg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=starfivetech.com; dmarc=pass action=none header.from=starfivetech.com; dkim=pass header.d=starfivetech.com; arc=none Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=starfivetech.com; Received: from SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn (2406:e500:c311:20::14) by SH0PR01MB0460.CHNPR01.prod.partner.outlook.cn (2406:e500:c311:8::17) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.7472.33; Wed, 24 Apr 2024 07:59:25 +0000 Received: from SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn ([fe80::e0a:f88a:cad1:dc1c]) by SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn ([fe80::e0a:f88a:cad1:dc1c%7]) with mapi id 15.20.7472.044; Wed, 24 Apr 2024 07:59:25 +0000 From: Joshua Yeong To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, conor@kernel.org, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, joshua.yeong@starfivetech.com, leyfoon.tan@starfivetech.com, jeeheng.sia@starfivetech.com Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: [PATCH v3 2/2] dt-bindings: cache: Add docs for StarFive Starlink cache controller Date: Wed, 24 Apr 2024 15:58:56 +0800 Message-Id: <20240424075856.145850-3-joshua.yeong@starfivetech.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20240424075856.145850-1-joshua.yeong@starfivetech.com> References: <20240424075856.145850-1-joshua.yeong@starfivetech.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: BJXPR01CA0048.CHNPR01.prod.partner.outlook.cn (2406:e500:c211:12::15) To SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn (2406:e500:c311:20::14) Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SH0PR01MB0841:EE_|SH0PR01MB0460:EE_ X-MS-Office365-Filtering-Correlation-Id: 7f6bdcc4-cb93-4e7e-ace3-08dc64347592 X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn;PTR:;CAT:NONE;SFS:(13230031)(366007)(52116005)(7416005)(41320700004)(1800799015)(921011)(38350700005);DIR:OUT;SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: =?us-ascii?Q?aLQMGYg1+y8ljUTGQOVprl6xHvknpNwJCln/pa/QOYofzvpKyc8SffenN+ct?= =?us-ascii?Q?KeAAzSTlgaVcLKn/Ogytn+gNL7kMSODFQQWlPYu6csrM/tCwktnXfwCMZU+w?= =?us-ascii?Q?GNWZSoBgVz9mLuqj6Mue3vsJ71F1BTVKT+3dRBHXVX4qWSNGjm0kXwDDqJJw?= =?us-ascii?Q?guz39lUWh9y9Id/zN3XZvCCcc56QhK3CkwOGkjKaSrj2/kR8oIRRTAIoOizq?= =?us-ascii?Q?bB8x+GJZ/9MphIJDWkqdsJGoulHf/bUL/W3n5PdBRhmpmdUAZKFU9xlRvYSx?= =?us-ascii?Q?KDrC2Nw5CC79K2RzAXaGWiD9IG/qUCwb3VhavgssMnD/UI44ytHByKIDJWHI?= =?us-ascii?Q?W0RKyuE7TzNR22Bn+g8/hRKfwmQOHz1+tz8awtbwAXuEdgRo6Fs7JBIkeo4a?= =?us-ascii?Q?hp0xHIJsYBHzROJweKA7GU5Q2jG+7h7m4YxrYwpX26b3tZr1NqCjb7pm80F8?= =?us-ascii?Q?siS6QVZc/DhPN5TxU/WlCQShK/PrwwmujV/LK5JhUKokbgNsZxWFji4w8OkA?= =?us-ascii?Q?P1Bgz4s0ou/l4z5tmSMCaSBg2Guabf5YGcDJX4iZZOLYdNlfzv+Y/iRrdmdd?= =?us-ascii?Q?/ufrCgK5Pjdg/ThEXQCcOnTl/DPj2DcA7o9OKCJO791MbmKW5Fwv713rENZv?= =?us-ascii?Q?VNK2IZRrbA+4wy8V8en59M17Qge/RWnx8ibYmjFfCW/SuGDONZeBF71ueTfX?= =?us-ascii?Q?Al8TL7pG2OnKhJjJBfxcwyew6qT5uBlOpWTdby7HzYa8vBatOwV8Aod3e6tt?= =?us-ascii?Q?8H09KYpzPk+wc5U2vEiNqZ5fc0zxQz2zSM/X3zyPmgYZ1XrEY4iG9szi34iA?= =?us-ascii?Q?GpVag+LzCxPFSI3bvm1xPSXnYmfWqA0VkdyGsNjSqja10F1wJZOpQ22DG0FS?= =?us-ascii?Q?Bnds2tMgbhNtvQANNr5ix+ug7QuEvQ3aD52vi+3kBI+Gtj3KC3LLHJ6OT4Id?= =?us-ascii?Q?ZmpEbq1c2y30Kq+JC9s8BisG/LlZm/FluHBccmZjwm/eLAzbQ8kHihT061BA?= =?us-ascii?Q?72YiOS0zGYuaaAOvb3WhO9Xe/Gy0FTx1Doy/xHhZTu3HZVSpTyrVkpaYI7kv?= =?us-ascii?Q?s12gcRWMPbgaVenkZCmSQrbukhbGwbnCzK74HW0lTIhfCdCN6l5OgIQU3t1Z?= =?us-ascii?Q?mXLoeLnK1MvgqBlQos0Qq+t+Gt0jZpDlVtedhcPeqy2IbGZoRO3HUq5KVZaU?= =?us-ascii?Q?XOeI7Fxw3jSRVxDCoQCjzO+dXivZijCqx5lebFyC+XhWQxUeUEMLC5393iFR?= =?us-ascii?Q?HIsj4mragR7WHapBMrsJps3vXPR4jch7fB4A9qXGpHY/Ev1LvuTV2ZVeZsst?= =?us-ascii?Q?JKmXRgsPRT8ePii57zGgCrg6OEsWjbb1KJS2JeQCuDpbPg4zXcB0VjWtt3zX?= =?us-ascii?Q?LmBvdD7OhEbQ/lc4PCcl+CN+cVD+nmWxDIDWlOCPUQCfD/foOFeGji2Cuz83?= =?us-ascii?Q?ovzHLPb462yFJnfPUQuh2ps7XBnlV78NLLQybUF2LsGyQj8M1ZoWb18Wq63G?= =?us-ascii?Q?GJzXsbN6rQ9B9sIsCje9c7lcxJ9Pp8yOBgzb9oTF76nYmxCJpQ5HizekaRAa?= =?us-ascii?Q?z3IqMIJ75PfhQ6hFy0ajN27FNWDj86ndFYGXlldku4YPAr0hLK1q7cnB2hJP?= =?us-ascii?Q?0zKALOe1YwiEQRDFgxxYR+Y=3D?= X-OriginatorOrg: starfivetech.com X-MS-Exchange-CrossTenant-Network-Message-Id: 7f6bdcc4-cb93-4e7e-ace3-08dc64347592 X-MS-Exchange-CrossTenant-AuthSource: SH0PR01MB0841.CHNPR01.prod.partner.outlook.cn X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Apr 2024 07:59:25.6194 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 06fe3fa3-1221-43d3-861b-5a4ee687a85c X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: +uOilfcSRANc591JY4yvfRq/SYFLFfMICxy81M/C/8v70TixVG6xtIqbp9HEe4XRaeG4tQz7rj3zdKeUesYm76W28+nyqqVYfsQp8f0UtXk= X-MS-Exchange-Transport-CrossTenantHeadersStamped: SH0PR01MB0460 Content-Type: text/plain; charset="utf-8" Add DT binding documentation used by StarFive's JH8100 SoC Starlink cache controller. Signed-off-by: Joshua Yeong Reviewed-by: Rob Herring (Arm) --- .../cache/starfive,jh8100-starlink-cache.yaml | 66 +++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 Documentation/devicetree/bindings/cache/starfive,jh8100= -starlink-cache.yaml diff --git a/Documentation/devicetree/bindings/cache/starfive,jh8100-starli= nk-cache.yaml b/Documentation/devicetree/bindings/cache/starfive,jh8100-sta= rlink-cache.yaml new file mode 100644 index 000000000000..6d61098e388b --- /dev/null +++ b/Documentation/devicetree/bindings/cache/starfive,jh8100-starlink-cach= e.yaml @@ -0,0 +1,66 @@ +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/cache/starfive,jh8100-starlink-cache.ya= ml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: StarFive StarLink Cache Controller + +maintainers: + - Joshua Yeong + +description: + StarFive's StarLink Cache Controller manages the L3 cache shared between + clusters of CPU cores. The cache driver enables RISC-V non-standard cache + management as an alternative to instructions in the RISC-V Zicbom extens= ion. + +allOf: + - $ref: /schemas/cache-controller.yaml# + +# We need a select here so we don't match all nodes with 'cache' +select: + properties: + compatible: + contains: + enum: + - starfive,jh8100-starlink-cache + + required: + - compatible + +properties: + compatible: + items: + - const: starfive,jh8100-starlink-cache + - const: cache + + reg: + maxItems: 1 + +unevaluatedProperties: false + +required: + - compatible + - reg + - cache-block-size + - cache-level + - cache-sets + - cache-size + - cache-unified + +examples: + - | + soc { + #address-cells =3D <2>; + #size-cells =3D <2>; + + cache-controller@15000000 { + compatible =3D "starfive,jh8100-starlink-cache", "cache"; + reg =3D <0x0 0x15000000 0x0 0x278>; + cache-block-size =3D <64>; + cache-level =3D <3>; + cache-sets =3D <8192>; + cache-size =3D <0x400000>; + cache-unified; + }; + }; --=20 2.25.1