From patchwork Wed Oct 18 12:40:06 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sunil V L X-Patchwork-Id: 154871 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a05:612c:2908:b0:403:3b70:6f57 with SMTP id ib8csp4759660vqb; Wed, 18 Oct 2023 05:41:29 -0700 (PDT) X-Google-Smtp-Source: AGHT+IEh8EKBRuU1Xx8N1rqKR2Wqmuo0pT1b/cyVgdp5PHDi3IMUhgZJ5y/enfdHfyI+ZEDgU0RK X-Received: by 2002:a17:902:e847:b0:1c0:bf60:ba82 with SMTP id t7-20020a170902e84700b001c0bf60ba82mr5118031plg.5.1697632889009; Wed, 18 Oct 2023 05:41:29 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1697632888; cv=none; d=google.com; s=arc-20160816; b=axUI4gXtv7RmSL+WbeizbKnue60T+JrHD0wncC4BaZkIOPcTHF/P43MSzw2/7UY1Ix rQpmpHtArdIXppgdoU1G8nz5L3A9TeMjpFo0zGOgi4V3Age17dYxzI0nDd7BLQ9pwOBU DPn+QkpGPQepgGvsoKkn+owdI2S08Xa8B0/vLhKkRp7Qvl5nwea85zkJ1xsbBmQCs/Xa av0IsF4pcKi/DAuOudKCbwHvVnOJV1H48wAMszBzIywAIeodERSun+RCgwuqN89nk5cd KTnLDd+3ZcwHHvESp6QjQNwvYCZa0T8uVtcpeND5beE7wnapPdsFtADkljbf5kCHafT3 4qLg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=gTW8kyBICRbc9yF0k81A432uuMoCKuaw9w1HIRoraUU=; fh=GA8jgg99n1wbdtGTXlvdoBzs7t1k8r/1aGEnK0qMx54=; b=X48YzPzEggnhIPpk4bmtxzd8O4t49MsXun8zvfiXajUoYOgQ6EjoietaO8wMs42slB xDSGyVLk2ATZDTzva3iWsWDhb08thmPBs9bxLe4bwcnrNQgIKmIs3GXafEaFE8NNYAeI S82PSb48aqbob1EQPNPtCMXrJh+rRrU44e/mVZM8EkzZjlqnf76n4p5xNSGwadLjLosa vwt+pxA0Zjxk5QYz7g3iJuod/G6N0CMqBQrnYvibJX1QGw3uN5z7WgS1esCezzMhFjWA 4pJi7A/plOHUmjmzaZbs7e74uuqVb2NMuliV3DeFGTFdm1DPiOmxLvL/67kvu+x5co+8 PciQ== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@ventanamicro.com header.s=google header.b=NTfKEvAJ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from snail.vger.email (snail.vger.email. [2620:137:e000::3:7]) by mx.google.com with ESMTPS id i3-20020a170902c28300b001c9d03042b6si598796pld.7.2023.10.18.05.41.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 05:41:28 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) client-ip=2620:137:e000::3:7; Authentication-Results: mx.google.com; dkim=pass header.i=@ventanamicro.com header.s=google header.b=NTfKEvAJ; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::3:7 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: from out1.vger.email (depot.vger.email [IPv6:2620:137:e000::3:0]) by snail.vger.email (Postfix) with ESMTP id 7B5AD806CC3A; Wed, 18 Oct 2023 05:40:50 -0700 (PDT) X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.103.10 at snail.vger.email Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230420AbjJRMkg (ORCPT + 23 others); Wed, 18 Oct 2023 08:40:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43706 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230397AbjJRMk2 (ORCPT ); Wed, 18 Oct 2023 08:40:28 -0400 Received: from mail-oo1-xc2c.google.com (mail-oo1-xc2c.google.com [IPv6:2607:f8b0:4864:20::c2c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1695A118 for ; Wed, 18 Oct 2023 05:40:26 -0700 (PDT) Received: by mail-oo1-xc2c.google.com with SMTP id 006d021491bc7-57bc2c2f13dso3830677eaf.2 for ; Wed, 18 Oct 2023 05:40:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1697632825; x=1698237625; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=gTW8kyBICRbc9yF0k81A432uuMoCKuaw9w1HIRoraUU=; b=NTfKEvAJWgSqK7pj+57ku/n0+pT0mfNrcosiW+x4RGyTbK1mrxyrcGxF5wRULIjJaN rDqTKyplPU+CtK8RL3d1G4YXrGeVb3e1EnKK8J483vhW/8YFvbaPyyWFi5psGzINz7fX +OSC2nEHQ9/zn8TJOqmcBgyeEyGPcCJ0aSXJEVafSf/B4N6deIcq+LdOPncGFl0FiN+/ 1dSBr0PcSHQj4mBGYQwRJ5ntSfFQHFNydVzwAitricAWNaWMzYVIaWPxFKpnhrrvX6ao 31EaOyOfOOcmeLqv00PA8AcZN7Myx7MmrZtPx0X7w6zhENrz+Eu33ALX7u52+4hSf4+c 8RGQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697632825; x=1698237625; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gTW8kyBICRbc9yF0k81A432uuMoCKuaw9w1HIRoraUU=; b=hnJnldD8cG4Xlq0Q0uCShKiJT1LXIbPZmeXGE06FYHg76KmQT/lBlQWX6z6+sPjhB7 jzYmYLQFfeUOq5RRmuZ0WUDFkwpfIi9LgFInXY417fxTjBps0WB3P/s6thBfjVlCFAzq QJSvq0mvAFZNkSQxRJ/NiaPjaR4Da9fwfMSXDnDd2+EWAWLLhWRmU6FMWjQtYBmwL4A+ JYZeeZqvGSIoz4fjx6Kju+YEh639HrVqlPbhrJDvz+en39WpyE+w8SVIbFxfKPA5+Dfv 2POelURZSDFvLMl0bEyT5AvCsePbUozr0K5IU++BT+PIOFNqykQlgU3l81a+3S9EE3y8 cdDA== X-Gm-Message-State: AOJu0YzcYuOrxqTnAVAGUMXlqS5Ss3Od2xoBb90CPv4qyl/ma6wtKhQY NwEMMEa00x9gNwcthHmhOdjYFw== X-Received: by 2002:a05:6358:c608:b0:143:96e0:5bef with SMTP id fd8-20020a056358c60800b0014396e05befmr4870648rwb.4.1697632825171; Wed, 18 Oct 2023 05:40:25 -0700 (PDT) Received: from sunil-pc.Dlink ([106.51.188.78]) by smtp.gmail.com with ESMTPSA id w190-20020a6382c7000000b005891f3af36asm1599267pgd.87.2023.10.18.05.40.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 18 Oct 2023 05:40:24 -0700 (PDT) From: Sunil V L To: linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org Cc: Paul Walmsley , Palmer Dabbelt , Albert Ou , "Rafael J . Wysocki" , Len Brown , Andrew Jones , Conor Dooley , Anup Patel , Sunil V L Subject: [PATCH v4 -next 3/4] RISC-V: ACPI: RHCT: Add function to get CBO block sizes Date: Wed, 18 Oct 2023 18:10:06 +0530 Message-Id: <20231018124007.1306159-4-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231018124007.1306159-1-sunilvl@ventanamicro.com> References: <20231018124007.1306159-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 X-Spam-Status: No, score=1.2 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_BLOCKED, RCVD_IN_SBL_CSS,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.6 X-Spam-Level: * X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-Greylist: Sender passed SPF test, not delayed by milter-greylist-4.6.4 (snail.vger.email [0.0.0.0]); Wed, 18 Oct 2023 05:40:50 -0700 (PDT) X-getmail-retrieved-from-mailbox: INBOX X-GMAIL-THRID: 1780097104520415681 X-GMAIL-MSGID: 1780097104520415681 Cache Block Operation (CBO) related block size in ACPI is provided by RHCT. Add support to read the CMO node in RHCT to get this information. Signed-off-by: Sunil V L Reviewed-by: Andrew Jones --- arch/riscv/include/asm/acpi.h | 6 +++ drivers/acpi/riscv/rhct.c | 87 +++++++++++++++++++++++++++++++++++ 2 files changed, 93 insertions(+) diff --git a/arch/riscv/include/asm/acpi.h b/arch/riscv/include/asm/acpi.h index d5604d2073bc..7dad0cf9d701 100644 --- a/arch/riscv/include/asm/acpi.h +++ b/arch/riscv/include/asm/acpi.h @@ -66,6 +66,8 @@ int acpi_get_riscv_isa(struct acpi_table_header *table, unsigned int cpu, const char **isa); static inline int acpi_numa_get_nid(unsigned int cpu) { return NUMA_NO_NODE; } +void acpi_get_cbo_block_size(struct acpi_table_header *table, u32 *cbom_size, + u32 *cboz_size, u32 *cbop_size); #else static inline void acpi_init_rintc_map(void) { } static inline struct acpi_madt_rintc *acpi_cpu_get_madt_rintc(int cpu) @@ -79,6 +81,10 @@ static inline int acpi_get_riscv_isa(struct acpi_table_header *table, return -EINVAL; } +static inline void acpi_get_cbo_block_size(struct acpi_table_header *table, + u32 *cbom_size, u32 *cboz_size, + u32 *cbop_size) { } + #endif /* CONFIG_ACPI */ #endif /*_ASM_ACPI_H*/ diff --git a/drivers/acpi/riscv/rhct.c b/drivers/acpi/riscv/rhct.c index 489b0e93b1e5..caa2c16e1697 100644 --- a/drivers/acpi/riscv/rhct.c +++ b/drivers/acpi/riscv/rhct.c @@ -8,6 +8,7 @@ #define pr_fmt(fmt) "ACPI: RHCT: " fmt #include +#include static struct acpi_table_rhct *acpi_get_rhct(void) { @@ -81,3 +82,89 @@ int acpi_get_riscv_isa(struct acpi_table_header *table, unsigned int cpu, const return -1; } + +static void acpi_parse_hart_info_cmo_node(struct acpi_table_rhct *rhct, + struct acpi_rhct_hart_info *hart_info, + u32 *cbom_size, u32 *cboz_size, u32 *cbop_size) +{ + u32 size_hartinfo = sizeof(struct acpi_rhct_hart_info); + u32 size_hdr = sizeof(struct acpi_rhct_node_header); + struct acpi_rhct_node_header *ref_node; + struct acpi_rhct_cmo_node *cmo_node; + u32 *hart_info_node_offset; + + hart_info_node_offset = ACPI_ADD_PTR(u32, hart_info, size_hartinfo); + for (int i = 0; i < hart_info->num_offsets; i++) { + ref_node = ACPI_ADD_PTR(struct acpi_rhct_node_header, + rhct, hart_info_node_offset[i]); + if (ref_node->type == ACPI_RHCT_NODE_TYPE_CMO) { + cmo_node = ACPI_ADD_PTR(struct acpi_rhct_cmo_node, + ref_node, size_hdr); + if (cbom_size && cmo_node->cbom_size <= 30) { + if (!*cbom_size) + *cbom_size = BIT(cmo_node->cbom_size); + else if (*cbom_size != BIT(cmo_node->cbom_size)) + pr_warn("CBOM size is not the same across harts\n"); + } + + if (cboz_size && cmo_node->cboz_size <= 30) { + if (!*cboz_size) + *cboz_size = BIT(cmo_node->cboz_size); + else if (*cboz_size != BIT(cmo_node->cboz_size)) + pr_warn("CBOZ size is not the same across harts\n"); + } + + if (cbop_size && cmo_node->cbop_size <= 30) { + if (!*cbop_size) + *cbop_size = BIT(cmo_node->cbop_size); + else if (*cbop_size != BIT(cmo_node->cbop_size)) + pr_warn("CBOP size is not the same across harts\n"); + } + } + } +} + +/* + * During early boot, the caller should call acpi_get_table() and pass its pointer to + * these functions (and free up later). At run time, since this table can be used + * multiple times, pass NULL so that the table remains in memory. + */ +void acpi_get_cbo_block_size(struct acpi_table_header *table, u32 *cbom_size, + u32 *cboz_size, u32 *cbop_size) +{ + u32 size_hdr = sizeof(struct acpi_rhct_node_header); + struct acpi_rhct_node_header *node, *end; + struct acpi_rhct_hart_info *hart_info; + struct acpi_table_rhct *rhct; + + if (acpi_disabled) + return; + + if (table) { + rhct = (struct acpi_table_rhct *)table; + } else { + rhct = acpi_get_rhct(); + if (!rhct) + return; + } + + if (cbom_size) + *cbom_size = 0; + + if (cboz_size) + *cboz_size = 0; + + if (cbop_size) + *cbop_size = 0; + + end = ACPI_ADD_PTR(struct acpi_rhct_node_header, rhct, rhct->header.length); + for (node = ACPI_ADD_PTR(struct acpi_rhct_node_header, rhct, rhct->node_offset); + node < end; + node = ACPI_ADD_PTR(struct acpi_rhct_node_header, node, node->length)) { + if (node->type == ACPI_RHCT_NODE_TYPE_HART_INFO) { + hart_info = ACPI_ADD_PTR(struct acpi_rhct_hart_info, node, size_hdr); + acpi_parse_hart_info_cmo_node(rhct, hart_info, cbom_size, + cboz_size, cbop_size); + } + } +}