From patchwork Mon May 15 05:49:14 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: 682008 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 C02EEC7EE26 for ; Mon, 15 May 2023 05:52:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238792AbjEOFwT (ORCPT ); Mon, 15 May 2023 01:52:19 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232353AbjEOFvW (ORCPT ); Mon, 15 May 2023 01:51:22 -0400 Received: from mail-pl1-x636.google.com (mail-pl1-x636.google.com [IPv6:2607:f8b0:4864:20::636]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB21935A8 for ; Sun, 14 May 2023 22:50:24 -0700 (PDT) Received: by mail-pl1-x636.google.com with SMTP id d9443c01a7336-1ab14cb3aaeso87498385ad.2 for ; Sun, 14 May 2023 22:50:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; t=1684129824; x=1686721824; 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=bvg+GJpfRbLLmDkZ0StW7roD1sWqDLKd1ZxLgpiB2U8=; b=Q4t00pT4ZWzwlaux3rA/dO5uvJj95jGbFN41gz6rgArxZ5h/XZ9tyOePsHbJ3Rkesc FLedojP0taJ50To+Akrsw9VkWHGyH6MUVr6aKKY98ZxTlY/jIL46s85d4wD1X+R3YG6g 3T2wnihVKr5jk9y53f0UCcyh6RbOhxCfIQRXHNA91KXsHtP89ASXn3lI5+2GSUO2C6aj Rn9nazjcJ38ZNkQQ8+/t3qwUQenK3qNgGFvus1IHKGS3lSz8xIAfmbQeSkTGgkrhip9/ W5lLT/wLeFvrviSoVpcbW+OozGXGAnQtqLonpkMBum8HBBGL244pQPb74LiLIZljtdGr m1qg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1684129824; x=1686721824; 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=bvg+GJpfRbLLmDkZ0StW7roD1sWqDLKd1ZxLgpiB2U8=; b=dYoeT6GGm8ERNH5epm15GnV/TiVWipLsFBgjn+EUzCcYKoLRzYU368PAHkVzsi5rUQ zr4jvD0n8+x+IiMkiGpehbi3Q1JhKV66IpHKe/oR1CTiTLW8qTS3sth5sN4ULk0jUMiF NUyybCkYUnM9od1ag9DylWkXHGwZhbVXtjjGU/9UGr8s12454r239/uP6ICToUGSA7H6 fhQ7wQQIegtHo2OSH2jWQviyCA3GapDqfQIZjM3ZEAChYzVdA4Pel4HsveLg0ncchoNK +0qdKOtl/WsRHy2cgJ+billLF3aNDaruuN82C3UQu7gy/7dBoWmACJ1/QRWZHqrnye4g /hQw== X-Gm-Message-State: AC+VfDza3g5p24woxxErZzjGH7Q++X0SgLvchcAAQkzEcF9rQKVybusX ubIHJGa7oYfKi12tR9wTBrRzVw== X-Google-Smtp-Source: ACHHUZ7xz/6Qsd1dRQfSsQkL104oUqFv86xYEJzP/eDAKJ1EDSsQ0zeVEE6vjHTQLIdZflWGHacgng== X-Received: by 2002:a17:902:d38c:b0:1ab:675:3e31 with SMTP id e12-20020a170902d38c00b001ab06753e31mr38877950pld.37.1684129824381; Sun, 14 May 2023 22:50:24 -0700 (PDT) Received: from localhost.localdomain ([106.51.191.118]) by smtp.gmail.com with ESMTPSA id f10-20020a17090274ca00b001ab28f620d0sm12423277plt.290.2023.05.14.22.50.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 14 May 2023 22:50:24 -0700 (PDT) From: Sunil V L To: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-acpi@vger.kernel.org, linux-crypto@vger.kernel.org, platform-driver-x86@vger.kernel.org, llvm@lists.linux.dev Cc: Jonathan Corbet , Paul Walmsley , Palmer Dabbelt , Albert Ou , "Rafael J . Wysocki" , Len Brown , Sunil V L , Daniel Lezcano , Thomas Gleixner , Weili Qian , Zhou Wang , Herbert Xu , "David S . Miller" , Marc Zyngier , Maximilian Luz , Hans de Goede , Mark Gross , Nathan Chancellor , Nick Desaulniers , Tom Rix , "Rafael J . Wysocki" , Andrew Jones Subject: [PATCH V6 07/21] ACPI: processor_core: RISC-V: Enable mapping processor to the hartid Date: Mon, 15 May 2023 11:19:14 +0530 Message-Id: <20230515054928.2079268-8-sunilvl@ventanamicro.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230515054928.2079268-1-sunilvl@ventanamicro.com> References: <20230515054928.2079268-1-sunilvl@ventanamicro.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org processor_core needs arch-specific functions to map the ACPI ID to the physical ID. In RISC-V platforms, hartid is the physical id and RINTC structure in MADT provides this mapping. Add arch-specific function to get this mapping from RINTC. Signed-off-by: Sunil V L Acked-by: Rafael J. Wysocki Reviewed-by: Andrew Jones --- arch/riscv/include/asm/acpi.h | 3 +++ drivers/acpi/processor_core.c | 29 +++++++++++++++++++++++++++++ 2 files changed, 32 insertions(+) diff --git a/arch/riscv/include/asm/acpi.h b/arch/riscv/include/asm/acpi.h index bcade255bd6e..9be52b6ffae1 100644 --- a/arch/riscv/include/asm/acpi.h +++ b/arch/riscv/include/asm/acpi.h @@ -15,6 +15,9 @@ /* Basic configuration for ACPI */ #ifdef CONFIG_ACPI +typedef u64 phys_cpuid_t; +#define PHYS_CPUID_INVALID INVALID_HARTID + /* ACPI table mapping after acpi_permanent_mmap is set */ void *acpi_os_ioremap(acpi_physical_address phys, acpi_size size); #define acpi_os_ioremap acpi_os_ioremap diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c index 2ac48cda5b20..d6606a9f2da6 100644 --- a/drivers/acpi/processor_core.c +++ b/drivers/acpi/processor_core.c @@ -106,6 +106,32 @@ static int map_gicc_mpidr(struct acpi_subtable_header *entry, return -EINVAL; } +/* + * Retrieve the RISC-V hartid for the processor + */ +static int map_rintc_hartid(struct acpi_subtable_header *entry, + int device_declaration, u32 acpi_id, + phys_cpuid_t *hartid) +{ + struct acpi_madt_rintc *rintc = + container_of(entry, struct acpi_madt_rintc, header); + + if (!(rintc->flags & ACPI_MADT_ENABLED)) + return -ENODEV; + + /* device_declaration means Device object in DSDT, in the + * RISC-V, logical processors are required to + * have a Processor Device object in the DSDT, so we should + * check device_declaration here + */ + if (device_declaration && rintc->uid == acpi_id) { + *hartid = rintc->hart_id; + return 0; + } + + return -EINVAL; +} + static phys_cpuid_t map_madt_entry(struct acpi_table_madt *madt, int type, u32 acpi_id) { @@ -136,6 +162,9 @@ static phys_cpuid_t map_madt_entry(struct acpi_table_madt *madt, } else if (header->type == ACPI_MADT_TYPE_GENERIC_INTERRUPT) { if (!map_gicc_mpidr(header, type, acpi_id, &phys_id)) break; + } else if (header->type == ACPI_MADT_TYPE_RINTC) { + if (!map_rintc_hartid(header, type, acpi_id, &phys_id)) + break; } entry += header->length; }