From mboxrd@z Thu Jan 1 00:00:00 1970 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 919E6C4332F for ; Fri, 15 Oct 2021 08:02:14 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 5D4A461037 for ; Fri, 15 Oct 2021 08:02:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 5D4A461037 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=sifive.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:36234 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mbIAP-0006Qq-8G for qemu-devel@archiver.kernel.org; Fri, 15 Oct 2021 04:02:13 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:45274) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mbHvt-0005uQ-NC for qemu-devel@nongnu.org; Fri, 15 Oct 2021 03:47:13 -0400 Received: from mail-pj1-x102b.google.com ([2607:f8b0:4864:20::102b]:43932) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mbHvr-0002BD-Us for qemu-devel@nongnu.org; Fri, 15 Oct 2021 03:47:13 -0400 Received: by mail-pj1-x102b.google.com with SMTP id e5-20020a17090a804500b001a116ad95caso1141498pjw.2 for ; Fri, 15 Oct 2021 00:47:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sifive.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=EjjleQGbXRW4tAMoN47fJ3uas3dGDPOB9nUw9Bqw9TM=; b=Ar9gYUUMD6SXXNtt/iOnU41dMqfKcpAx9p4hzyV00Sxygt7J5Z8jpsbmGfU0vZnvx9 RZXi67WHFgxwPabFyNJ6TLbVHO60IsqX0txI1FXk5WD02UvtM7KNPR86ERpNTry4AFte C3cfnijorq+NeqpFV/ve1HxtnEid6njdIia+/3/VquRxzqMJ/ifqxjdv5BUIqh9/A1bR b7Yp7AP+bGmHME1DM2OV9yYDFxxY9DRmpIHgA9JAmunk+8kixeTyspgP4kqXKbp5hJAe JHwaxJYEKgrnlHKULw5vP01n9CQpOkzf6aOA4FLq8Z43WPSnikPHwHpyZyBfbS2y/Khm GPiQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=EjjleQGbXRW4tAMoN47fJ3uas3dGDPOB9nUw9Bqw9TM=; b=7JFyPa/JqWO3pujt1wgISEUFBzSHDUaeiy0hnxCC4OZx0EEmaPyVhezQuZWHPlfKIz MI9/u6l3v5HskqX5DIXXjiGf32pucrO6PCJpU7MRWsyHPpqf+J/W5JchVCWTdL2G1E4X R9cuK2VWzefWxS+F4wOWpg2Ac5lxbBKqdNUP8dn7beNVVT4kW1PEWxqEF7JnitRMTGuU s6XmoCZRwUa3CooE7gAgFymztIeQEMEr1RUjywnviHu48B4B3NjuRFNBSUBZGtgv0C86 NHzJ/k1aORY83H065FDkBM8XW7A3rLxIXmGg/mQxbseorKj/nKIQ3Vr+tDMRKNbfXE2e IF6A== X-Gm-Message-State: AOAM532+P7o8po+BKeOBNO9RLS88pDuSYdHA7vyprxYQq3II2y0iYUwW ake4pGmH/AguhadmtvAxGTYRf9vH4TpChS/i X-Google-Smtp-Source: ABdhPJwuI2Hc+Jl35KBq0RB2pDFmPrYaSn8VwMrrezeNpGBe7bG4hPzVcUbt1KA39c3kMfkR9G3JIA== X-Received: by 2002:a17:90a:d48e:: with SMTP id s14mr27140979pju.49.1634284030569; Fri, 15 Oct 2021 00:47:10 -0700 (PDT) Received: from localhost.localdomain (123-193-74-252.dynamic.kbronet.com.tw. [123.193.74.252]) by smtp.gmail.com with ESMTPSA id z13sm4271680pfq.130.2021.10.15.00.47.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 15 Oct 2021 00:47:10 -0700 (PDT) From: frank.chang@sifive.com To: qemu-devel@nongnu.org, qemu-riscv@nongnu.org Subject: [PATCH v8 09/78] target/riscv: rvv-1.0: add vcsr register Date: Fri, 15 Oct 2021 15:45:10 +0800 Message-Id: <20211015074627.3957162-10-frank.chang@sifive.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211015074627.3957162-1-frank.chang@sifive.com> References: <20211015074627.3957162-1-frank.chang@sifive.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=2607:f8b0:4864:20::102b; envelope-from=frank.chang@sifive.com; helo=mail-pj1-x102b.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=unavailable autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Frank Chang , Bin Meng , Richard Henderson , Alistair Francis , Palmer Dabbelt , LIU Zhiwei Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: LIU Zhiwei Signed-off-by: LIU Zhiwei Signed-off-by: Frank Chang Reviewed-by: Richard Henderson Reviewed-by: Alistair Francis --- target/riscv/cpu_bits.h | 7 +++++++ target/riscv/csr.c | 21 +++++++++++++++++++++ 2 files changed, 28 insertions(+) diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index ca3ddd313b0..b8816822b81 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -60,9 +60,16 @@ #define CSR_VSTART 0x008 #define CSR_VXSAT 0x009 #define CSR_VXRM 0x00a +#define CSR_VCSR 0x00f #define CSR_VL 0xc20 #define CSR_VTYPE 0xc21 +/* VCSR fields */ +#define VCSR_VXSAT_SHIFT 0 +#define VCSR_VXSAT (0x1 << VCSR_VXSAT_SHIFT) +#define VCSR_VXRM_SHIFT 1 +#define VCSR_VXRM (0x3 << VCSR_VXRM_SHIFT) + /* User Timers and Counters */ #define CSR_CYCLE 0xc00 #define CSR_TIME 0xc01 diff --git a/target/riscv/csr.c b/target/riscv/csr.c index c71f3f34e88..57591753059 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -338,6 +338,26 @@ static RISCVException write_vstart(CPURISCVState *env, int csrno, return RISCV_EXCP_NONE; } +static int read_vcsr(CPURISCVState *env, int csrno, target_ulong *val) +{ + *val = (env->vxrm << VCSR_VXRM_SHIFT) | (env->vxsat << VCSR_VXSAT_SHIFT); + return RISCV_EXCP_NONE; +} + +static int write_vcsr(CPURISCVState *env, int csrno, target_ulong val) +{ +#if !defined(CONFIG_USER_ONLY) + if (!env->debugger && !riscv_cpu_vector_enabled(env)) { + return RISCV_EXCP_ILLEGAL_INST; + } + env->mstatus |= MSTATUS_VS; +#endif + + env->vxrm = (val & VCSR_VXRM) >> VCSR_VXRM_SHIFT; + env->vxsat = (val & VCSR_VXSAT) >> VCSR_VXSAT_SHIFT; + return RISCV_EXCP_NONE; +} + /* User Timers and Counters */ static RISCVException read_instret(CPURISCVState *env, int csrno, target_ulong *val) @@ -1532,6 +1552,7 @@ riscv_csr_operations csr_ops[CSR_TABLE_SIZE] = { [CSR_VSTART] = { "vstart", vs, read_vstart, write_vstart }, [CSR_VXSAT] = { "vxsat", vs, read_vxsat, write_vxsat }, [CSR_VXRM] = { "vxrm", vs, read_vxrm, write_vxrm }, + [CSR_VCSR] = { "vcsr", vs, read_vcsr, write_vcsr }, [CSR_VL] = { "vl", vs, read_vl }, [CSR_VTYPE] = { "vtype", vs, read_vtype }, /* User Timers and Counters */ -- 2.25.1