From patchwork Thu Aug 3 17:59:04 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: 13340445 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 D1A47C04E69 for ; Thu, 3 Aug 2023 18:02:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235410AbjHCSCE (ORCPT ); Thu, 3 Aug 2023 14:02:04 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60652 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232742AbjHCSB2 (ORCPT ); Thu, 3 Aug 2023 14:01:28 -0400 Received: from mail-pf1-x429.google.com (mail-pf1-x429.google.com [IPv6:2607:f8b0:4864:20::429]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2356D49C6 for ; Thu, 3 Aug 2023 11:00:54 -0700 (PDT) Received: by mail-pf1-x429.google.com with SMTP id d2e1a72fcca58-686daaa5f1fso893196b3a.3 for ; Thu, 03 Aug 2023 11:00:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1691085641; x=1691690441; 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=dVaxSLrcyWrDv537p1b6trWUWlm89roci1AhpEn7YYs=; b=fYo/3hatpzRNQHoHD581iWzQIHlOzusgQsa6qibNN0GLNn1R7S4p/XTrzg4lClBc1p lJKgy1mbJhBtdMSWvCGh9zo1ep2Gb3uA2P3XQbn7aI/LMI4bTDshu3hqT/1QFrqsfu7m TIdcKLkqWqqkK/tNhUcjdcoUPhpOgQm7R1QCCvGw5YQNWhSTvYAfTTAX+lJGELc3ARqy uX+JaTHismEAtWt+icKb9NzCOg5nBT52EbnylGIEAzjm2gWGkCHux7TB4Bi59RFPoIqH 3R5ZRXHZLPpTl5R/PsHSm82EmxC7TCybtefpHDuU1MaqhlgUMegZvF1tMLSTrgHDefTg PaXQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1691085641; x=1691690441; 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=dVaxSLrcyWrDv537p1b6trWUWlm89roci1AhpEn7YYs=; b=jk08rlUtVIBERUo8JjfI2OiWl7RJSR6s9eoXHwLLFij4fDIcw3H3BbjFkt4Ql32R7U sl5eruIEvk1xK0n27V27L7c0B6WnoXMwdUH43e+MZir3qzRBGfZ3Lcxcpj2zGc5xJwMA 0s7GODPvI14/+Twd7/Ubgl3IirjsEqiU9sAhDLwLhwJ/ebihvMomL61hC7wd31hmyEGV cNe9YBFFod799sCViO47vJ3OvttINih9t0f1jL/h1WGPiQH5nCslwcNF1zEzktYT5ZSk HgTgZ5+iMe5njpBsdNZa5dxuaRnSJcktWyYrV1AOUhnsECXT8PzA48Plq61UImZNwrNU g4zw== X-Gm-Message-State: ABy/qLYngY+/AA7vtYd+a3hCulvJng+RZEId7t1BIauWeQfg5OiesvYV uxi3w8a2x9mF7CEEsSzcebHGrQ== X-Google-Smtp-Source: APBJJlHyvV2fJJK5WcdXx6lc335tSDfrb26H7EK1vwao55qh/vVoaQmFBsBegHbsIEKiaSY6OFT3ZQ== X-Received: by 2002:a05:6a21:6da1:b0:13d:82eb:795a with SMTP id wl33-20020a056a216da100b0013d82eb795amr13802350pzb.56.1691085641397; Thu, 03 Aug 2023 11:00:41 -0700 (PDT) Received: from sunil-pc.Dlink ([106.51.190.143]) by smtp.gmail.com with ESMTPSA id s8-20020aa78d48000000b0065a1b05193asm134952pfe.185.2023.08.03.11.00.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 03 Aug 2023 11:00:41 -0700 (PDT) From: Sunil V L To: linux-doc@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org Cc: Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , Catalin Marinas , Will Deacon , "Rafael J . Wysocki" , Len Brown , Andy Shevchenko , Daniel Scally , Heikki Krogerus , Sakari Ailus , Greg Kroah-Hartman , Daniel Lezcano , Thomas Gleixner , Anup Patel , Marc Zyngier , Bjorn Helgaas , Robert Moore , Haibo Xu , Andrew Jones , Conor Dooley , Atish Kumar Patra , Sunil V L Subject: [RFC PATCH v1 09/21] RISC-V: cacheflush: Initialize CBO variables on ACPI systems Date: Thu, 3 Aug 2023 23:29:04 +0530 Message-Id: <20230803175916.3174453-10-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230803175916.3174453-1-sunilvl@ventanamicro.com> References: <20230803175916.3174453-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org Using new interface to get the CBO block size information in RHCT, initialize the variables on ACPI platforms. Signed-off-by: Sunil V L --- arch/riscv/mm/cacheflush.c | 37 +++++++++++++++++++++++++++++++------ 1 file changed, 31 insertions(+), 6 deletions(-) diff --git a/arch/riscv/mm/cacheflush.c b/arch/riscv/mm/cacheflush.c index fbc59b3f69f2..63bb56819b37 100644 --- a/arch/riscv/mm/cacheflush.c +++ b/arch/riscv/mm/cacheflush.c @@ -4,6 +4,8 @@ */ #include +#include +#include #include #ifdef CONFIG_SMP @@ -131,15 +133,38 @@ void __init riscv_init_cbo_blocksizes(void) unsigned long cbom_hartid, cboz_hartid; u32 cbom_block_size = 0, cboz_block_size = 0; struct device_node *node; + struct acpi_table_header *rhct; + acpi_status status; + unsigned int cpu; + + if (!acpi_disabled) { + status = acpi_get_table(ACPI_SIG_RHCT, 0, &rhct); + if (ACPI_FAILURE(status)) + return; + } - for_each_of_cpu_node(node) { - /* set block-size for cbom and/or cboz extension if available */ - cbo_get_block_size(node, "riscv,cbom-block-size", - &cbom_block_size, &cbom_hartid); - cbo_get_block_size(node, "riscv,cboz-block-size", - &cboz_block_size, &cboz_hartid); + for_each_possible_cpu(cpu) { + if (acpi_disabled) { + node = of_cpu_device_node_get(cpu); + if (!node) { + pr_warn("Unable to find cpu node\n"); + continue; + } + + /* set block-size for cbom and/or cboz extension if available */ + cbo_get_block_size(node, "riscv,cbom-block-size", + &cbom_block_size, &cbom_hartid); + cbo_get_block_size(node, "riscv,cboz-block-size", + &cboz_block_size, &cboz_hartid); + } else { + acpi_get_cbo_block_size(rhct, cpu, &cbom_block_size, + &cboz_block_size, NULL); + } } + if (!acpi_disabled && rhct) + acpi_put_table((struct acpi_table_header *)rhct); + if (cbom_block_size) riscv_cbom_block_size = cbom_block_size;