From patchwork Thu Feb 1 14:00:44 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Baturo X-Patchwork-Id: 1893948 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=Ym60dRa6; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4TQgc91tWRz1yQ0 for ; Fri, 2 Feb 2024 01:03:35 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rVXd7-0000UH-E9; Thu, 01 Feb 2024 09:01:25 -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 1rVXcy-0000RR-FD; Thu, 01 Feb 2024 09:01:20 -0500 Received: from mail-ej1-x62f.google.com ([2a00:1450:4864:20::62f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1rVXcq-0005Kn-G1; Thu, 01 Feb 2024 09:01:15 -0500 Received: by mail-ej1-x62f.google.com with SMTP id a640c23a62f3a-a366ad7ad45so117171666b.3; Thu, 01 Feb 2024 06:01:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1706796066; x=1707400866; darn=nongnu.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=Vwz4Tehyk0t8VGMK24WnQkMqQbhlmibzbAS/3Lxw+fQ=; b=Ym60dRa6DWBwUzVB+l06ay0Rv/OMbrpTTW7wu/oPOtRubHoJ3QhDAXmJadSiMMtGDp 1v+M/Kq85mJrdgoqaTTyKjxKU8ccE+vVAu2K9DIMSvifknIJoFmN42rchTei0sE4u+RP Y1FFCWKTNZqzkLPOmcUE/hiu7M0FHSCxOoUoTm6UNOVs2mrLjkgnkqNUjsB7Ioxw+q6z qqI7i/Hn4bBBxukmelPTvFvUWF8Ac1Gbojp5SLY9YCvBcwSdd8Fqq9OjjFfVm/nRRyS/ ZT0sfDpdzzRMifow5sFw06FezBuxmhOuAtqr1+Dq6nlYJ7QvW9uVuimbTLT8ZF8dlNFR +Y5Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1706796066; x=1707400866; 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=Vwz4Tehyk0t8VGMK24WnQkMqQbhlmibzbAS/3Lxw+fQ=; b=QUlsxc36lNWQy5DlRicZrKFqH5NN13LV8720VCef4/Ip1RR3cYtDXDouWym1BzwACt L8vhO4YqPwDdJrTXj98IlDKILhL4yl0NJ6q3fOFa1yV3RqYQAe+8tJufBdIxYV6JhR7R 5F5g/eLSNfioqVraXiRpCeZ8fN92kiz+tch32LiIdfjx63c8yFdssN0UZe6Dlv1SbXRo 2wfLU1E5i/JV/YCBGJhrqpZMtl+TH/feAaWG/HKgP/Ar7ClGUsBpm2dx0JfznwXrpTzM OcoxSITfEi6lvDK69sx8ndimgdYGHHdLDKyXZW45POEElttDnbgzaml32Ko1FUJvn9Bl Ib4g== X-Gm-Message-State: AOJu0YxpCxkbMwA+pOkKgDVEk8qM1jxpDWtr41rBwlbJLiRqtbW2hbFG EhNrRUBKPF8aAVNLN7PIX+1NMaUrucCzcuBa3+UNAurK1W9vSsYy X-Google-Smtp-Source: AGHT+IHmP3GIaue8NHBmMEFPcimfXyVbN9VAVYSD5bJgE/ErK0LmqkktIm9nUfwYmOXKBXKfKXDO+Q== X-Received: by 2002:a17:906:4a0b:b0:a27:5446:27d9 with SMTP id w11-20020a1709064a0b00b00a27544627d9mr3808395eju.5.1706796066064; Thu, 01 Feb 2024 06:01:06 -0800 (PST) X-Forwarded-Encrypted: i=0; AJvYcCUYNPAzWsm2y3Oh0ytQvteFllMIMAJwiPALbrkGP8Ii3YB9FP3V4A8OcAtPnf0pa9yWezxmLTzCZFFIiUYDgTpaXBzG6ZAVjb1FZ/EYc1HfS9CcKPdTutgOPOp1d5qJI/l+5nTZnVpwzcX5SQpl2RDk27iBjE1Socwx7AfqsiKMLasIkWAJnJWpNO5IuSmBUhS18j7vCAXAMloRYcqE9h/3UZ1ac8YlpUrg16vfrHAmeEJ079U44BxGlf94ECbOG+wAcO+LDgDZuqaADDGHKeKpWNmo2uigGeLzhjyieVIm28hVHC3edMTfmqa2RNlxtGtSq7uhpli+Ke4whqUh3wWWbUwdsNogM8zfHwI/yPSgpLmLEwaYPVLs5t8= Received: from freya.midgard (broadband-188-255-126-251.ip.moscow.rt.ru. [188.255.126.251]) by smtp.gmail.com with ESMTPSA id un6-20020a170907cb8600b00a36a7f0f087sm902728ejc.222.2024.02.01.06.01.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Feb 2024 06:01:05 -0800 (PST) From: Alexey Baturo X-Google-Original-From: Alexey Baturo To: Cc: baturo.alexey@gmail.com, richard.henderson@linaro.org, zhiwei_liu@linux.alibaba.com, palmer@dabbelt.com, Alistair.Francis@wdc.com, sagark@eecs.berkeley.edu, kbastian@mail.uni-paderborn.de, qemu-devel@nongnu.org, qemu-riscv@nongnu.org, Alistair Francis Subject: [PATCH v6 3/6] target/riscv: Add helper functions to calculate current number of masked bits for pointer masking Date: Thu, 1 Feb 2024 14:00:44 +0000 Message-Id: <20240201140047.3456114-4-me@deliversmonkey.space> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240201140047.3456114-1-me@deliversmonkey.space> References: <20240201140047.3456114-1-me@deliversmonkey.space> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::62f; envelope-from=baturo.alexey@gmail.com; helo=mail-ej1-x62f.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, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, T_SCC_BODY_TEXT_LINE=-0.01, T_SPF_TEMPERROR=0.01 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org From: Alexey Baturo Signed-off-by: Alexey Baturo Reviewed-by: Alistair Francis --- target/riscv/cpu.h | 4 +++ target/riscv/cpu_helper.c | 58 +++++++++++++++++++++++++++++++++++++++ 2 files changed, 62 insertions(+) diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h index e03ff3003f..96b554a00e 100644 --- a/target/riscv/cpu.h +++ b/target/riscv/cpu.h @@ -699,6 +699,10 @@ void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc, bool riscv_cpu_is_32bit(RISCVCPU *cpu); +bool riscv_cpu_virt_mem_enabled(CPURISCVState *env); +RISCVPmPmm riscv_pm_get_pmm(CPURISCVState *env); +int riscv_pm_get_pmlen(RISCVPmPmm pmm); + RISCVException riscv_csrrw(CPURISCVState *env, int csrno, target_ulong *ret_value, target_ulong new_value, target_ulong write_mask); diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index aedd5bef50..bef7917668 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -142,6 +142,64 @@ void cpu_get_tb_cpu_state(CPURISCVState *env, vaddr *pc, *pflags = flags; } +RISCVPmPmm riscv_pm_get_pmm(CPURISCVState *env) +{ + int pmm = 0; +#ifndef CONFIG_USER_ONLY + int priv_mode = cpu_address_mode(env); + /* Get current PMM field */ + switch (priv_mode) { + case PRV_M: + pmm = riscv_cpu_cfg(env)->ext_smmpm ? + get_field(env->mseccfg, MSECCFG_PMM) : PMM_FIELD_DISABLED; + break; + case PRV_S: + pmm = riscv_cpu_cfg(env)->ext_smnpm ? + get_field(env->menvcfg, MENVCFG_PMM) : PMM_FIELD_DISABLED; + break; + case PRV_U: + pmm = riscv_cpu_cfg(env)->ext_ssnpm ? + get_field(env->senvcfg, SENVCFG_PMM) : PMM_FIELD_DISABLED; + break; + default: + g_assert_not_reached(); + } +#endif + return pmm; +} + +bool riscv_cpu_virt_mem_enabled(CPURISCVState *env) +{ + bool virt_mem_en = false; +#ifndef CONFIG_USER_ONLY + int satp_mode = 0; + int priv_mode = cpu_address_mode(env); + /* Get current PMM field */ + if (riscv_cpu_mxl(env) == MXL_RV32) { + satp_mode = get_field(env->satp, SATP32_MODE); + } else { + satp_mode = get_field(env->satp, SATP64_MODE); + } + virt_mem_en = ((satp_mode != VM_1_10_MBARE) && (priv_mode != PRV_M)); +#endif + return virt_mem_en; +} + +int riscv_pm_get_pmlen(RISCVPmPmm pmm) +{ + switch (pmm) { + case PMM_FIELD_DISABLED: + return 0; + case PMM_FIELD_PMLEN7: + return 7; + case PMM_FIELD_PMLEN16: + return 16; + default: + g_assert_not_reached(); + } + return -1; +} + #ifndef CONFIG_USER_ONLY /*