From patchwork Wed Feb 15 18:57:25 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Henrique Barboza X-Patchwork-Id: 13142068 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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id BB6C8C636D7 for ; Wed, 15 Feb 2023 18:58:17 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pSMyn-0000Z7-G4; Wed, 15 Feb 2023 13:58:09 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pSMyf-000892-0Z for qemu-devel@nongnu.org; Wed, 15 Feb 2023 13:58:03 -0500 Received: from mail-oi1-x232.google.com ([2607:f8b0:4864:20::232]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1pSMyd-0007wH-7m for qemu-devel@nongnu.org; Wed, 15 Feb 2023 13:58:00 -0500 Received: by mail-oi1-x232.google.com with SMTP id bj22so16653155oib.11 for ; Wed, 15 Feb 2023 10:57:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ventanamicro.com; s=google; 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=KqvKnxVMWo5xUwBFYmmbLK4P5nYy97w+H/Se5TENS3M=; b=mH0tRWzfKrQPXRRnwFeRGaoVw1QWZCcr6oGcW4kuIKZdPBbSg+txJtyEYANuhF17Nx pLRY96VnbZRHXH8Q1G/9yrTcQymKnBIQEjfYBqpozMhD+aJ9jrxwmIywQbcPOevGUJEo NTURaSBy+QbltJDDyWdOB5TACSJw6pNomvi8Tad48gKX7junHnfjhJovIZiBNCbqHMw6 N2+pxFKT+uRaEspONZ+46wdABzvicDqO4aYNK1yjkdYYqfEifC/EWDh/xpGLgM2XE2TZ h16+/fD3oynuMxIK9/6LbA0Z7I1KUwqrZxWRwZ9OKu2F/Rboafra9bqgGdXTvtTsU+id i1fA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=KqvKnxVMWo5xUwBFYmmbLK4P5nYy97w+H/Se5TENS3M=; b=FqkjSdSPhJK+Kq2CWWyfsaPKeaSm186rxvW0g84XlnSPkJ1CGhToxnh4dQ02upQ/7e Y6I/7AADsVIFo2IHv3VomcgOGJamWYGrF1GHxfPfWaHmh8M2Zr8QaLtaLnhupIkGBN55 8a40QmogzHxHey7zzp3HxnjP7Y9ziFcL5butx1HNoTL0BGHM7voiEdRwTVL/2PeLDmip zOolZcw3eaCAxZXAzIuSePScVxc5rT7/2IuQ+3Pa3V1yqv3pu7goosxP//pN4QKrTGeN j22cg0qHgSwE502H237TzWNpoYlRxMvdjgZFsMZMQjVT8UVxFvgqPfpSV1jq/5wNm45Z Ibxg== X-Gm-Message-State: AO0yUKUV9cwslS52VSTKvg9+EhsLjdVYUUxUOYH5XyjNXBDt2kCod9Cg rwlegZ8RJrXFWBQ2N9WK9/HgLYzlEsQCZOov X-Google-Smtp-Source: AK7set/w7mev+PWMye3T2b17WKghZXE8R/u1VvPij9TpLusC9l4m+gwm4/MHC02JbMXW01EoCVnwig== X-Received: by 2002:a54:4484:0:b0:378:24b1:65a2 with SMTP id v4-20020a544484000000b0037824b165a2mr1236039oiv.6.1676487478183; Wed, 15 Feb 2023 10:57:58 -0800 (PST) Received: from grind.dc1.ventanamicro.com ([191.19.40.109]) by smtp.gmail.com with ESMTPSA id c21-20020a056808139500b0037d8dbe4308sm4145697oiw.48.2023.02.15.10.57.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 15 Feb 2023 10:57:57 -0800 (PST) From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Cc: qemu-riscv@nongnu.org, alistair.francis@wdc.com, bmeng@tinylab.org, liweiwei@iscas.ac.cn, zhiwei_liu@linux.alibaba.com, Daniel Henrique Barboza , Andrew Jones Subject: [PATCH v3 09/10] target/riscv: remove RISCV_FEATURE_MMU Date: Wed, 15 Feb 2023 15:57:25 -0300 Message-Id: <20230215185726.691759-10-dbarboza@ventanamicro.com> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230215185726.691759-1-dbarboza@ventanamicro.com> References: <20230215185726.691759-1-dbarboza@ventanamicro.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::232; envelope-from=dbarboza@ventanamicro.com; helo=mail-oi1-x232.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org RISCV_FEATURE_MMU is set whether cpu->cfg.mmu is set, so let's just use the flag directly instead. With this change the enum is also removed. It is worth noticing that this enum, and all the RISCV_FEATURES_* that were contained in it, predates the existence of the cpu->cfg object. Today, using cpu->cfg is an easier way to retrieve all the features and extensions enabled in the hart. Signed-off-by: Daniel Henrique Barboza Reviewed-by: Weiwei Li Reviewed-by: Bin Meng Reviewed-by: Andrew Jones --- target/riscv/cpu.c | 4 ---- target/riscv/cpu.h | 7 ------- target/riscv/cpu_helper.c | 2 +- target/riscv/csr.c | 4 ++-- target/riscv/monitor.c | 2 +- target/riscv/pmp.c | 2 +- 6 files changed, 5 insertions(+), 16 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 7b1360d6ba..075033006c 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -919,10 +919,6 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp) } } - if (cpu->cfg.mmu) { - riscv_set_feature(env, RISCV_FEATURE_MMU); - } - if (cpu->cfg.epmp && !cpu->cfg.pmp) { /* * Enhanced PMP should only be available diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index bd7ab5fceb..7ff4d90261 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -81,13 +81,6 @@ #define RVH RV('H') #define RVJ RV('J') -/* S extension denotes that Supervisor mode exists, however it is possible - to have a core that support S mode but does not have an MMU and there - is currently no bit in misa to indicate whether an MMU exists or not - so a cpu features bitfield is required, likewise for optional PMP support */ -enum { - RISCV_FEATURE_MMU, -}; /* Privileged specification version */ enum { diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 15d9542691..e76b206191 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -796,7 +796,7 @@ static int get_physical_address(CPURISCVState *env, hwaddr *physical, mode = PRV_U; } - if (mode == PRV_M || !riscv_feature(env, RISCV_FEATURE_MMU)) { + if (mode == PRV_M || !riscv_cpu_cfg(env).mmu) { *physical = addr; *prot = PAGE_READ | PAGE_WRITE | PAGE_EXEC; return TRANSLATE_SUCCESS; diff --git a/target/riscv/csr.c b/target/riscv/csr.c index 4011b0d6f8..ec2c4c7c4a 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -2616,7 +2616,7 @@ static RISCVException rmw_siph(CPURISCVState *env, int csrno, static RISCVException read_satp(CPURISCVState *env, int csrno, target_ulong *val) { - if (!riscv_feature(env, RISCV_FEATURE_MMU)) { + if (!riscv_cpu_cfg(env).mmu) { *val = 0; return RISCV_EXCP_NONE; } @@ -2635,7 +2635,7 @@ static RISCVException write_satp(CPURISCVState *env, int csrno, { target_ulong vm, mask; - if (!riscv_feature(env, RISCV_FEATURE_MMU)) { + if (!riscv_cpu_cfg(env).mmu) { return RISCV_EXCP_NONE; } diff --git a/target/riscv/monitor.c b/target/riscv/monitor.c index 236f93b9f5..b7b8d0614f 100644 --- a/target/riscv/monitor.c +++ b/target/riscv/monitor.c @@ -218,7 +218,7 @@ void hmp_info_mem(Monitor *mon, const QDict *qdict) return; } - if (!riscv_feature(env, RISCV_FEATURE_MMU)) { + if (!riscv_cpu_cfg(env).mmu) { monitor_printf(mon, "S-mode MMU unavailable\n"); return; } diff --git a/target/riscv/pmp.c b/target/riscv/pmp.c index 1e7903dffa..c67de36942 100644 --- a/target/riscv/pmp.c +++ b/target/riscv/pmp.c @@ -315,7 +315,7 @@ int pmp_hart_has_privs(CPURISCVState *env, target_ulong addr, } if (size == 0) { - if (riscv_feature(env, RISCV_FEATURE_MMU)) { + if (riscv_cpu_cfg(env).mmu) { /* * If size is unknown (0), assume that all bytes * from addr to the end of the page will be accessed.