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([2a01:e0a:e17:9700:16d2:7456:6634:9626]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-388c8046c46sm10704122f8f.71.2024.12.17.01.07.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 17 Dec 2024 01:07:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rivosinc-com.20230601.gappssmtp.com; s=20230601; t=1734426438; x=1735031238; 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=IeWDWcKhmjqqXIRstj58bXoYdtGc+tASiZ8vjREnW3c=; b=ZFRLIB9acRizTgyV069oTWb+fbR18HoapHvRj3wv+jITgiYxSCz6yqtlZFqtC5uHIB 1QSMivKk5LodQ6TMG57QE34VL2Uo1pyAdNEtayQe1MTYDGXxsJgHcPuHRNxt3Hv8qq/a lzvIFoJtKlqSLtLl9lwjczcWoc87boFbyfJlCy5fVCH/Jo2FWiOCmU7bgwiW8nZ6z4ts BgBPL+c4bqA3yUGc2Sta79hs89FV1ie73b5o5ReVOOORbLjxX+ebaQiFyvBRhVHSBfso FaRg7nj37YEZq6jhrIKjK+ardW3x2VsaO5CPhv1n3NMBmhYe/+4a//yTpdNtsOIZnywi UomA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1734426438; x=1735031238; 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=IeWDWcKhmjqqXIRstj58bXoYdtGc+tASiZ8vjREnW3c=; b=icHM9KWFUer2VuvGa0KQqk1+G0gTrl3cC205EQaotD3D6rUf4dR3McwbOICMG9tEVH u3r+DA+hH8Xogg36Lgb5LsD4YnZY+NWWutxHYwqIbCPi5YGJVSO43YCRjtd9SUV+tTrm VwyjeVjPYYFrKCCV4xeyKZIVE8ncEfq+6lQ9GX1mHF8+9wLdRpCAJZdzlMJK2sgO0q3Q piz0jn6LP2a5U8o+ARlPtMNKGQTZ0KhB9Q6VPQLxOFISDZg96mQvZI6L6d1poBSvyPc1 27FhMvauHSfr14B5Z2d1f3penmiVXpkKEnpu8R9p8JRHmJ5DiGfy1cX1HAqMniEa+FGI Raqg== X-Forwarded-Encrypted: i=1; AJvYcCVEDUFU5pAtkUfF8R9JzuL6ciBv1yfYdpwTjEELmvrm+UMKXcGBvxEKpxBPjWBB0hn0lOLF2eC3oHaj@nongnu.org X-Gm-Message-State: AOJu0YzXjXl4am2PxKoIo5bihn5uSWHlykiEhPhWdwOJBl3oYDWPkTQH Mf2KTuihITIyL215Ld4K18Exy3WeRXq+sXpjvfFgQNc2AkughhHXEOZ4ZLyv9bA= X-Gm-Gg: ASbGncsxKv0US0X+EFLExoNEXgBCyjudYtgTRnceGqf58vCqLxT+qblY3J2x/hIPtxU vsChavEMpYYQKRFqQ0WbsS2AToCItQdVIuQsH4yJPY8GY5NfZief/oYTa9F9AeNYV/MW9VCb+n1 4nyKKawERgrzsKgsJb+C7NovWClu6HwP00cbEsVu30OHObwS5k17Ho2fPdSZzv0CvAlMAnGuQXw 6OA4mhjRGholv+RDkNBXX6wM4ld7elHOss60TzAqpeQa5KaSt6SA8QmJA== X-Google-Smtp-Source: AGHT+IF+X+xGyFgBL95dJYw22VXGuZe8LhlTZMDy95RNbEoD7OBvYROCLlj5G96W7Z5jaHf5TInkQA== X-Received: by 2002:a5d:5f90:0:b0:386:3327:4f21 with SMTP id ffacd0b85a97d-388db260b4emr2453464f8f.27.1734426437751; Tue, 17 Dec 2024 01:07:17 -0800 (PST) From: =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= To: qemu-riscv@nongnu.org, Palmer Dabbelt , Alistair Francis , Bin Meng Cc: =?UTF-8?q?Cl=C3=A9ment=20L=C3=A9ger?= , Weiwei Li , Daniel Henrique Barboza , Liu Zhiwei , Ved Shanbhogue , Atish Patra , qemu-devel@nongnu.org, Frank Chang Subject: [PATCH v7 6/9] target/riscv: Add Smdbltrp CSRs handling Date: Tue, 17 Dec 2024 10:07:02 +0100 Message-ID: <20241217090707.3511160-7-cleger@rivosinc.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20241217090707.3511160-1-cleger@rivosinc.com> References: <20241217090707.3511160-1-cleger@rivosinc.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2a00:1450:4864:20::433; envelope-from=cleger@rivosinc.com; helo=mail-wr1-x433.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-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+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @rivosinc-com.20230601.gappssmtp.com) X-ZM-MESSAGEID: 1734426611843116600 Add `ext_smdbltrp`in RISCVCPUConfig and implement MSTATUS.MDT behavior. Also set MDT to 1 at reset according to the specification. Signed-off-by: Cl=C3=A9ment L=C3=A9ger Reviewed-by: Alistair Francis --- target/riscv/cpu.c | 3 +++ target/riscv/cpu_bits.h | 1 + target/riscv/cpu_cfg.h | 1 + target/riscv/csr.c | 13 +++++++++++++ 4 files changed, 18 insertions(+) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index c856a95593..1b883db0cc 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -1064,6 +1064,9 @@ static void riscv_cpu_reset_hold(Object *obj, ResetTy= pe type) env->mstatus_hs =3D set_field(env->mstatus_hs, MSTATUS64_UXL, env->misa_mxl); } + if (riscv_cpu_cfg(env)->ext_smdbltrp) { + env->mstatus =3D set_field(env->mstatus, MSTATUS_MDT, 1); + } } env->mcause =3D 0; env->miclaim =3D MIP_SGEIP; diff --git a/target/riscv/cpu_bits.h b/target/riscv/cpu_bits.h index e1244004b2..e584b6251f 100644 --- a/target/riscv/cpu_bits.h +++ b/target/riscv/cpu_bits.h @@ -566,6 +566,7 @@ #define MSTATUS_MPELP 0x020000000000 /* zicfilp */ #define MSTATUS_GVA 0x4000000000ULL #define MSTATUS_MPV 0x8000000000ULL +#define MSTATUS_MDT 0x40000000000ULL /* Smdbltrp extension */ =20 #define MSTATUS64_UXL 0x0000000300000000ULL #define MSTATUS64_SXL 0x0000000C00000000ULL diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h index 7638660651..f12e57d6d4 100644 --- a/target/riscv/cpu_cfg.h +++ b/target/riscv/cpu_cfg.h @@ -80,6 +80,7 @@ struct RISCVCPUConfig { bool ext_sstc; bool ext_smcntrpmf; bool ext_ssdbltrp; + bool ext_smdbltrp; bool ext_svadu; bool ext_svinval; bool ext_svnapot; diff --git a/target/riscv/csr.c b/target/riscv/csr.c index db87fd8726..4fc02b9838 100644 --- a/target/riscv/csr.c +++ b/target/riscv/csr.c @@ -1649,6 +1649,13 @@ static RISCVException write_mstatus(CPURISCVState *e= nv, int csrno, } } =20 + if (riscv_cpu_cfg(env)->ext_smdbltrp) { + mask |=3D MSTATUS_MDT; + if ((val & MSTATUS_MDT) !=3D 0) { + val &=3D ~MSTATUS_MIE; + } + } + if (xl !=3D MXL_RV32 || env->debugger) { if (riscv_has_ext(env, RVH)) { mask |=3D MSTATUS_MPV | MSTATUS_GVA; @@ -1692,6 +1699,12 @@ static RISCVException write_mstatush(CPURISCVState *= env, int csrno, uint64_t valh =3D (uint64_t)val << 32; uint64_t mask =3D riscv_has_ext(env, RVH) ? MSTATUS_MPV | MSTATUS_GVA = : 0; =20 + if (riscv_cpu_cfg(env)->ext_smdbltrp) { + mask |=3D MSTATUS_MDT; + if ((valh & MSTATUS_MDT) !=3D 0) { + mask |=3D MSTATUS_MIE; + } + } env->mstatus =3D (env->mstatus & ~mask) | (valh & mask); =20 return RISCV_EXCP_NONE; --=20 2.45.2