From nobody Thu Nov 14 07:08:58 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1708438465; cv=none; d=zohomail.com; s=zohoarc; b=Cj8zOWRRV3HVTtyuNV89R4CIc0kwNLtwFYgOggHC2HYrmjOukmWYL7f+3NH5BUq7GBfGM3fM/axVQ2irExz0rT5I0CmisdSOp+GR5Ia8PpQqzmLVjUEXHJR7B4XZZ6JXW31KqhOItUfTFnq5PyPtlJspugZ3hOg8Tsb+cUY1Bo0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1708438465; h=Content-Type:Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:Reply-To:Reply-To:References:Sender:Subject:Subject:To:To:Message-Id; bh=3oy1cTPiODjDyZVTXKgWROO+B+tLSOmUJ82ad3KEC3Q=; b=lNvK3VpoVvrBGJx4nKGLMUsOC4ZueYTTFn8v6Hq84h7eNskDjWWFhW+vopprdymzIORkBxekvnLi25jL03Jn2y+4hQIknd/JD0qu8rUBrrv0pkfl/2wDOTejzZ7tVpGXyBiQ+JerVV4z84FA1DPtQh11PsnuBynWBuMZKH1gSTk= ARC-Authentication-Results: i=1; mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1708438465259951.2165480950773; Tue, 20 Feb 2024 06:14:25 -0800 (PST) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1rcQsE-00027I-Ci; Tue, 20 Feb 2024 09:13:30 -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 1rcP5i-00006M-9S; Tue, 20 Feb 2024 07:19:18 -0500 Received: from szxga05-in.huawei.com ([45.249.212.191]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rcP5b-0004ML-Ev; Tue, 20 Feb 2024 07:19:15 -0500 Received: from mail.maildlp.com (unknown [172.19.163.44]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4TfJH52HHpz1FL8R; Tue, 20 Feb 2024 20:14:09 +0800 (CST) Received: from kwepemi500008.china.huawei.com (unknown [7.221.188.139]) by mail.maildlp.com (Postfix) with ESMTPS id 071F6140118; Tue, 20 Feb 2024 20:19:00 +0800 (CST) Received: from huawei.com (10.67.174.55) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 20 Feb 2024 20:18:59 +0800 To: , , , , , , CC: Subject: [RFC PATCH 1/3] target/arm: Implement FEAT_NMI to support Non-maskable Interrupt Date: Tue, 20 Feb 2024 12:17:50 +0000 Message-ID: <20240220121752.490665-2-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220121752.490665-1-ruanjinjie@huawei.com> References: <20240220121752.490665-1-ruanjinjie@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.67.174.55] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemi500008.china.huawei.com (7.221.188.139) 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=45.249.212.191; envelope-from=ruanjinjie@huawei.com; helo=szxga05-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Tue, 20 Feb 2024 09:13:26 -0500 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: , Reply-to: Jinjie Ruan From: Jinjie Ruan via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1708438466607100003 Content-Type: text/plain; charset="utf-8" Enable Non-maskable Interrupt feature. Enable HCRX register feature to support TALLINT read/write. Add support for enable/disable NMI at qemu startup as below: qemu-system-aarch64 -cpu cortex-a53/a57/a72/a76,nmi=3D[on/off] Add support for allint read/write as follow: mrs , ALLINT // read allint msr ALLINT, // write allint with imm msr ALLINT, # // write allint with 1 or 0 Signed-off-by: Jinjie Ruan --- target/arm/cpu-features.h | 5 +++++ target/arm/cpu.h | 2 ++ target/arm/cpu64.c | 31 +++++++++++++++++++++++++++++++ target/arm/helper.c | 33 +++++++++++++++++++++++++++++++++ target/arm/internals.h | 1 + target/arm/tcg/a64.decode | 1 + target/arm/tcg/cpu64.c | 11 +++++++++++ target/arm/tcg/helper-a64.c | 25 +++++++++++++++++++++++++ target/arm/tcg/helper-a64.h | 1 + target/arm/tcg/translate-a64.c | 10 ++++++++++ 10 files changed, 120 insertions(+) diff --git a/target/arm/cpu-features.h b/target/arm/cpu-features.h index 7567854db6..2ad1179be7 100644 --- a/target/arm/cpu-features.h +++ b/target/arm/cpu-features.h @@ -681,6 +681,11 @@ static inline bool isar_feature_aa64_sme(const ARMISAR= egisters *id) return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, SME) !=3D 0; } =20 +static inline bool isar_feature_aa64_nmi(const ARMISARegisters *id) +{ + return FIELD_EX64(id->id_aa64pfr1, ID_AA64PFR1, NMI) !=3D 0; +} + static inline bool isar_feature_aa64_tgran4_lpa2(const ARMISARegisters *id) { return FIELD_SEX64(id->id_aa64mmfr0, ID_AA64MMFR0, TGRAN4) >=3D 1; diff --git a/target/arm/cpu.h b/target/arm/cpu.h index 63f31e0d98..ea6e8d6501 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -261,6 +261,7 @@ typedef struct CPUArchState { uint32_t btype; /* BTI branch type. spsr[11:10]. */ uint64_t daif; /* exception masks, in the bits they are in PSTATE */ uint64_t svcr; /* PSTATE.{SM,ZA} in the bits they are in SVCR */ + uint64_t allint; /* All IRQ or FIQ interrupt mask, in the bit in PSTAT= E */ =20 uint64_t elr_el[4]; /* AArch64 exception link regs */ uint64_t sp_el[4]; /* AArch64 banked stack pointers */ @@ -1543,6 +1544,7 @@ FIELD(VTCR, SL2, 33, 1) #define PSTATE_D (1U << 9) #define PSTATE_BTYPE (3U << 10) #define PSTATE_SSBS (1U << 12) +#define PSTATE_ALLINT (1U << 13) #define PSTATE_IL (1U << 20) #define PSTATE_SS (1U << 21) #define PSTATE_PAN (1U << 22) diff --git a/target/arm/cpu64.c b/target/arm/cpu64.c index 8e30a7993e..3a5a3fda1b 100644 --- a/target/arm/cpu64.c +++ b/target/arm/cpu64.c @@ -295,6 +295,22 @@ static void cpu_arm_set_sve(Object *obj, bool value, E= rror **errp) cpu->isar.id_aa64pfr0 =3D t; } =20 +static bool cpu_arm_get_nmi(Object *obj, Error **errp) +{ + ARMCPU *cpu =3D ARM_CPU(obj); + return cpu_isar_feature(aa64_nmi, cpu); +} + +static void cpu_arm_set_nmi(Object *obj, bool value, Error **errp) +{ + ARMCPU *cpu =3D ARM_CPU(obj); + uint64_t t; + + t =3D cpu->isar.id_aa64pfr1; + t =3D FIELD_DP64(t, ID_AA64PFR1, NMI, value); + cpu->isar.id_aa64pfr1 =3D t; +} + void arm_cpu_sme_finalize(ARMCPU *cpu, Error **errp) { uint32_t vq_map =3D cpu->sme_vq.map; @@ -472,6 +488,11 @@ void aarch64_add_sme_properties(Object *obj) #endif } =20 +void aarch64_add_nmi_properties(Object *obj) +{ + object_property_add_bool(obj, "nmi", cpu_arm_get_nmi, cpu_arm_set_nmi); +} + void arm_cpu_pauth_finalize(ARMCPU *cpu, Error **errp) { ARMPauthFeature features =3D cpu_isar_feature(pauth_feature, cpu); @@ -593,9 +614,14 @@ void arm_cpu_lpa2_finalize(ARMCPU *cpu, Error **errp) =20 static void aarch64_a57_initfn(Object *obj) { + uint64_t t; ARMCPU *cpu =3D ARM_CPU(obj); =20 cpu->dtb_compatible =3D "arm,cortex-a57"; + t =3D cpu->isar.id_aa64mmfr1; + t =3D FIELD_DP64(t, ID_AA64MMFR1, HCX, 1); /* FEAT_HCX */ + cpu->isar.id_aa64mmfr1 =3D t; + aarch64_add_nmi_properties(obj); set_feature(&cpu->env, ARM_FEATURE_V8); set_feature(&cpu->env, ARM_FEATURE_NEON); set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER); @@ -650,9 +676,14 @@ static void aarch64_a57_initfn(Object *obj) =20 static void aarch64_a53_initfn(Object *obj) { + uint64_t t; ARMCPU *cpu =3D ARM_CPU(obj); =20 cpu->dtb_compatible =3D "arm,cortex-a53"; + t =3D cpu->isar.id_aa64mmfr1; + t =3D FIELD_DP64(t, ID_AA64MMFR1, HCX, 1); /* FEAT_HCX */ + cpu->isar.id_aa64mmfr1 =3D t; + aarch64_add_nmi_properties(obj); set_feature(&cpu->env, ARM_FEATURE_V8); set_feature(&cpu->env, ARM_FEATURE_NEON); set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER); diff --git a/target/arm/helper.c b/target/arm/helper.c index 90c4fb72ce..1194e1e2db 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -4618,6 +4618,28 @@ static void aa64_daif_write(CPUARMState *env, const = ARMCPRegInfo *ri, env->daif =3D value & PSTATE_DAIF; } =20 +static void aa64_allint_write(CPUARMState *env, const ARMCPRegInfo *ri, + uint64_t value) +{ + if (cpu_isar_feature(aa64_nmi, env_archcpu(env))) { + env->allint =3D value & PSTATE_ALLINT; + } +} + +static CPAccessResult aa64_allint_access(CPUARMState *env, + const ARMCPRegInfo *ri, bool isre= ad) +{ + if (arm_current_el(env) =3D=3D 0) { + return CP_ACCESS_TRAP_UNCATEGORIZED; + } + + if (arm_current_el(env) =3D=3D 1 && arm_is_el2_enabled(env) && + cpu_isar_feature(aa64_hcx, env_archcpu(env)) && + (env->cp15.hcrx_el2 & HCRX_TALLINT)) + return CP_ACCESS_TRAP_EL2; + return CP_ACCESS_OK; +} + static uint64_t aa64_pan_read(CPUARMState *env, const ARMCPRegInfo *ri) { return env->pstate & PSTATE_PAN; @@ -5437,6 +5459,12 @@ static const ARMCPRegInfo v8_cp_reginfo[] =3D { .access =3D PL0_RW, .accessfn =3D aa64_daif_access, .fieldoffset =3D offsetof(CPUARMState, daif), .writefn =3D aa64_daif_write, .resetfn =3D arm_cp_reset_ignore }, + { .name =3D "ALLINT", .state =3D ARM_CP_STATE_AA64, + .opc0 =3D 3, .opc1 =3D 0, .opc2 =3D 0, .crn =3D 4, .crm =3D 3, + .type =3D ARM_CP_NO_RAW, + .access =3D PL1_RW, .accessfn =3D aa64_allint_access, + .fieldoffset =3D offsetof(CPUARMState, allint), + .writefn =3D aa64_allint_write, .resetfn =3D arm_cp_reset_ignore }, { .name =3D "FPCR", .state =3D ARM_CP_STATE_AA64, .opc0 =3D 3, .opc1 =3D 3, .opc2 =3D 0, .crn =3D 4, .crm =3D 4, .access =3D PL0_RW, .type =3D ARM_CP_FPU | ARM_CP_SUPPRESS_TB_END, @@ -6056,6 +6084,11 @@ static void hcrx_write(CPUARMState *env, const ARMCP= RegInfo *ri, valid_mask |=3D HCRX_MSCEN | HCRX_MCE2; } =20 + /* FEAT_NMI adds TALLINT */ + if (cpu_isar_feature(aa64_nmi, env_archcpu(env))) { + valid_mask |=3D HCRX_TALLINT; + } + /* Clear RES0 bits. */ env->cp15.hcrx_el2 =3D value & valid_mask; } diff --git a/target/arm/internals.h b/target/arm/internals.h index 50bff44549..2b9f287c52 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1466,6 +1466,7 @@ void aarch64_max_tcg_initfn(Object *obj); void aarch64_add_pauth_properties(Object *obj); void aarch64_add_sve_properties(Object *obj); void aarch64_add_sme_properties(Object *obj); +void aarch64_add_nmi_properties(Object *obj); #endif =20 /* Read the CONTROL register as the MRS instruction would. */ diff --git a/target/arm/tcg/a64.decode b/target/arm/tcg/a64.decode index 8a20dce3c8..3588080024 100644 --- a/target/arm/tcg/a64.decode +++ b/target/arm/tcg/a64.decode @@ -207,6 +207,7 @@ MSR_i_DIT 1101 0101 0000 0 011 0100 .... 010 1111= 1 @msr_i MSR_i_TCO 1101 0101 0000 0 011 0100 .... 100 11111 @msr_i MSR_i_DAIFSET 1101 0101 0000 0 011 0100 .... 110 11111 @msr_i MSR_i_DAIFCLEAR 1101 0101 0000 0 011 0100 .... 111 11111 @msr_i +MSR_i_ALLINT 1101 0101 0000 0 001 0100 .... 000 11111 @msr_i MSR_i_SVCR 1101 0101 0000 0 011 0100 0 mask:2 imm:1 011 11111 =20 # MRS, MSR (register), SYS, SYSL. These are all essentially the diff --git a/target/arm/tcg/cpu64.c b/target/arm/tcg/cpu64.c index 5fba2c0f04..e08eb0ce94 100644 --- a/target/arm/tcg/cpu64.c +++ b/target/arm/tcg/cpu64.c @@ -293,9 +293,14 @@ static void aarch64_a55_initfn(Object *obj) =20 static void aarch64_a72_initfn(Object *obj) { + uint64_t t; ARMCPU *cpu =3D ARM_CPU(obj); =20 cpu->dtb_compatible =3D "arm,cortex-a72"; + t =3D cpu->isar.id_aa64mmfr1; + t =3D FIELD_DP64(t, ID_AA64MMFR1, HCX, 1); /* FEAT_HCX */ + cpu->isar.id_aa64mmfr1 =3D t; + aarch64_add_nmi_properties(obj); set_feature(&cpu->env, ARM_FEATURE_V8); set_feature(&cpu->env, ARM_FEATURE_NEON); set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER); @@ -348,9 +353,14 @@ static void aarch64_a72_initfn(Object *obj) =20 static void aarch64_a76_initfn(Object *obj) { + uint64_t t; ARMCPU *cpu =3D ARM_CPU(obj); =20 cpu->dtb_compatible =3D "arm,cortex-a76"; + t =3D cpu->isar.id_aa64mmfr1; + t =3D FIELD_DP64(t, ID_AA64MMFR1, HCX, 1); /* FEAT_HCX */ + cpu->isar.id_aa64mmfr1 =3D t; + aarch64_add_nmi_properties(obj); set_feature(&cpu->env, ARM_FEATURE_V8); set_feature(&cpu->env, ARM_FEATURE_NEON); set_feature(&cpu->env, ARM_FEATURE_GENERIC_TIMER); @@ -1175,6 +1185,7 @@ void aarch64_max_tcg_initfn(Object *obj) t =3D FIELD_DP64(t, ID_AA64PFR1, RAS_FRAC, 0); /* FEAT_RASv1p1 + FEAT= _DoubleFault */ t =3D FIELD_DP64(t, ID_AA64PFR1, SME, 1); /* FEAT_SME */ t =3D FIELD_DP64(t, ID_AA64PFR1, CSV2_FRAC, 0); /* FEAT_CSV2_2 */ + t =3D FIELD_DP64(t, ID_AA64PFR1, NMI, 0); /* FEAT_NMI */ cpu->isar.id_aa64pfr1 =3D t; =20 t =3D cpu->isar.id_aa64mmfr0; diff --git a/target/arm/tcg/helper-a64.c b/target/arm/tcg/helper-a64.c index ebaa7f00df..9b2a7cd891 100644 --- a/target/arm/tcg/helper-a64.c +++ b/target/arm/tcg/helper-a64.c @@ -66,6 +66,31 @@ void HELPER(msr_i_spsel)(CPUARMState *env, uint32_t imm) update_spsel(env, imm); } =20 +static void allint_check(CPUARMState *env, uint32_t op, + uint32_t imm, uintptr_t ra) +{ + /* ALLINT update to PSTATE.*/ + if (arm_current_el(env) =3D=3D 0) { + raise_exception_ra(env, EXCP_UDEF, + syn_aa64_sysregtrap(0, extract32(op, 0, 3), + extract32(op, 3, 3), 4, + imm, 0x1f, 0), + exception_target_el(env), ra); + } + /* todo */ +} + +void HELPER(msr_i_allint)(CPUARMState *env, uint32_t imm) +{ + allint_check(env, 0x8, imm, GETPC()); + if (imm =3D=3D 1) { + env->allint |=3D PSTATE_ALLINT; + } else { + env->allint &=3D ~PSTATE_ALLINT; + } + arm_rebuild_hflags(env); +} + static void daif_check(CPUARMState *env, uint32_t op, uint32_t imm, uintptr_t ra) { diff --git a/target/arm/tcg/helper-a64.h b/target/arm/tcg/helper-a64.h index 575a5dab7d..3aec703d4a 100644 --- a/target/arm/tcg/helper-a64.h +++ b/target/arm/tcg/helper-a64.h @@ -22,6 +22,7 @@ DEF_HELPER_FLAGS_1(rbit64, TCG_CALL_NO_RWG_SE, i64, i64) DEF_HELPER_2(msr_i_spsel, void, env, i32) DEF_HELPER_2(msr_i_daifset, void, env, i32) DEF_HELPER_2(msr_i_daifclear, void, env, i32) +DEF_HELPER_2(msr_i_allint, void, env, i32) DEF_HELPER_3(vfp_cmph_a64, i64, f16, f16, ptr) DEF_HELPER_3(vfp_cmpeh_a64, i64, f16, f16, ptr) DEF_HELPER_3(vfp_cmps_a64, i64, f32, f32, ptr) diff --git a/target/arm/tcg/translate-a64.c b/target/arm/tcg/translate-a64.c index 340265beb0..f1800f7c71 100644 --- a/target/arm/tcg/translate-a64.c +++ b/target/arm/tcg/translate-a64.c @@ -2036,6 +2036,16 @@ static bool trans_MSR_i_DAIFCLEAR(DisasContext *s, a= rg_i *a) return true; } =20 +static bool trans_MSR_i_ALLINT(DisasContext *s, arg_i *a) +{ + if (!dc_isar_feature(aa64_nmi, s) || s->current_el =3D=3D 0) { + return false; + } + gen_helper_msr_i_allint(tcg_env, tcg_constant_i32(a->imm)); + s->base.is_jmp =3D DISAS_TOO_MANY; + return true; +} + static bool trans_MSR_i_SVCR(DisasContext *s, arg_MSR_i_SVCR *a) { if (!dc_isar_feature(aa64_sme, s) || a->mask =3D=3D 0) { --=20 2.34.1 From nobody Thu Nov 14 07:08:58 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=nongnu.org ARC-Seal: i=1; a=rsa-sha256; t=1708438469; cv=none; d=zohomail.com; s=zohoarc; b=So00tPYwLaIXey6whkZNzS3TRhOtjgUl5IBXXPdiFkuZeQcdoDbwGa+3z7K2SFvSbqHCIAnDaecdhaH/MKw5A9NnVZ/LbNBZxmioX94+7/Hfb6dJZOgJFuflCxWV+dVqFMiCunbX/IXZ8xjmECi90035yeNoK43HQkVMRKTw5+g= ARC-Message-Signature: i=1; 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Tue, 20 Feb 2024 09:13:38 -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 1rcP5f-0008Tw-3v; Tue, 20 Feb 2024 07:19:15 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1rcP5b-0004MQ-Ct; Tue, 20 Feb 2024 07:19:14 -0500 Received: from mail.maildlp.com (unknown [172.19.163.44]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4TfJLD4PPGz1X2lH; Tue, 20 Feb 2024 20:16:52 +0800 (CST) Received: from kwepemi500008.china.huawei.com (unknown [7.221.188.139]) by mail.maildlp.com (Postfix) with ESMTPS id EE7F6140118; Tue, 20 Feb 2024 20:19:00 +0800 (CST) Received: from huawei.com (10.67.174.55) by kwepemi500008.china.huawei.com (7.221.188.139) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Tue, 20 Feb 2024 20:19:00 +0800 To: , , , , , , CC: Subject: [RFC PATCH 2/3] target/arm: Add NMI exception and handle PSTATE.ALLINT on taking an exception Date: Tue, 20 Feb 2024 12:17:51 +0000 Message-ID: <20240220121752.490665-3-ruanjinjie@huawei.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240220121752.490665-1-ruanjinjie@huawei.com> References: <20240220121752.490665-1-ruanjinjie@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.67.174.55] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemi500008.china.huawei.com (7.221.188.139) 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=45.249.212.35; envelope-from=ruanjinjie@huawei.com; helo=szxga07-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Tue, 20 Feb 2024 09:13:26 -0500 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: , Reply-to: Jinjie Ruan From: Jinjie Ruan via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1708438470929100001 Content-Type: text/plain; charset="utf-8" Add a new exception called NMI for Arm PE. Set/clear PSTATE.ALLINT on taking an exception to ELx according to the SCTLR_ELx.SPINTMASK bit. Mask IRQ/FIQ/NMI with ALLINT and PSTATE.SP & SCTLR_SPINTMASK in addition to PSTATE.DAIF. Save to and restore from SPSR_ELx with PSTATE.ALLINT on taking an exception to ELx and executing an exception return operation in ELx. Signed-off-by: Jinjie Ruan --- target/arm/cpu-qom.h | 1 + target/arm/cpu.c | 43 +++++++++++++++++++++++++++++++++++++----- target/arm/cpu.h | 10 ++++++++-- target/arm/helper.c | 26 ++++++++++++++++++++++++- target/arm/internals.h | 3 +++ 5 files changed, 75 insertions(+), 8 deletions(-) diff --git a/target/arm/cpu-qom.h b/target/arm/cpu-qom.h index 8e032691db..5a7f876bf8 100644 --- a/target/arm/cpu-qom.h +++ b/target/arm/cpu-qom.h @@ -41,6 +41,7 @@ DECLARE_CLASS_CHECKERS(AArch64CPUClass, AARCH64_CPU, #define ARM_CPU_FIQ 1 #define ARM_CPU_VIRQ 2 #define ARM_CPU_VFIQ 3 +#define ARM_CPU_NMI 4 =20 /* For M profile, some registers are banked secure vs non-secure; * these are represented as a 2-element array where the first element diff --git a/target/arm/cpu.c b/target/arm/cpu.c index 5fa86bc8d5..947efa76c1 100644 --- a/target/arm/cpu.c +++ b/target/arm/cpu.c @@ -128,7 +128,7 @@ static bool arm_cpu_has_work(CPUState *cs) =20 return (cpu->power_state !=3D PSCI_OFF) && cs->interrupt_request & - (CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD + (CPU_INTERRUPT_FIQ | CPU_INTERRUPT_HARD | CPU_INTERRUPT_NMI | CPU_INTERRUPT_VFIQ | CPU_INTERRUPT_VIRQ | CPU_INTERRUPT_VSERR | CPU_INTERRUPT_EXITTB); } @@ -357,6 +357,10 @@ static void arm_cpu_reset_hold(Object *obj) } env->daif =3D PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F; =20 + if (cpu_isar_feature(aa64_nmi, cpu)) { + env->allint =3D PSTATE_ALLINT; + } + /* AArch32 has a hard highvec setting of 0xFFFF0000. If we are curren= tly * executing as AArch32 then check if highvecs are enabled and * adjust the PC accordingly. @@ -668,6 +672,7 @@ static inline bool arm_excp_unmasked(CPUState *cs, unsi= gned int excp_idx, CPUARMState *env =3D cpu_env(cs); bool pstate_unmasked; bool unmasked =3D false; + bool nmi_unmasked =3D false; =20 /* * Don't take exceptions if they target a lower EL. @@ -678,13 +683,29 @@ static inline bool arm_excp_unmasked(CPUState *cs, un= signed int excp_idx, return false; } =20 + nmi_unmasked =3D (!(env->allint & PSTATE_ALLINT)) & + (!((env->cp15.sctlr_el[target_el] & SCTLR_SPINTMASK) && + (env->pstate & PSTATE_SP) && cur_el =3D=3D target_el)); + switch (excp_idx) { + case EXCP_NMI: + pstate_unmasked =3D nmi_unmasked; + break; + case EXCP_FIQ: - pstate_unmasked =3D !(env->daif & PSTATE_F); + if (cpu_isar_feature(aa64_nmi, env_archcpu(env))) { + pstate_unmasked =3D (!(env->daif & PSTATE_F)) & nmi_unmasked; + } else { + pstate_unmasked =3D !(env->daif & PSTATE_F); + } break; =20 case EXCP_IRQ: - pstate_unmasked =3D !(env->daif & PSTATE_I); + if (cpu_isar_feature(aa64_nmi, env_archcpu(env))) { + pstate_unmasked =3D (!(env->daif & PSTATE_I)) & nmi_unmasked; + } else { + pstate_unmasked =3D !(env->daif & PSTATE_I); + } break; =20 case EXCP_VFIQ: @@ -804,6 +825,16 @@ static bool arm_cpu_exec_interrupt(CPUState *cs, int i= nterrupt_request) =20 /* The prioritization of interrupts is IMPLEMENTATION DEFINED. */ =20 + if (cpu_isar_feature(aa64_nmi, env_archcpu(env))) { + if (interrupt_request & CPU_INTERRUPT_NMI) { + excp_idx =3D EXCP_NMI; + target_el =3D arm_phys_excp_target_el(cs, excp_idx, cur_el, se= cure); + if (arm_excp_unmasked(cs, excp_idx, target_el, + cur_el, secure, hcr_el2)) { + goto found; + } + } + } if (interrupt_request & CPU_INTERRUPT_FIQ) { excp_idx =3D EXCP_FIQ; target_el =3D arm_phys_excp_target_el(cs, excp_idx, cur_el, secure= ); @@ -929,7 +960,8 @@ static void arm_cpu_set_irq(void *opaque, int irq, int = level) [ARM_CPU_IRQ] =3D CPU_INTERRUPT_HARD, [ARM_CPU_FIQ] =3D CPU_INTERRUPT_FIQ, [ARM_CPU_VIRQ] =3D CPU_INTERRUPT_VIRQ, - [ARM_CPU_VFIQ] =3D CPU_INTERRUPT_VFIQ + [ARM_CPU_VFIQ] =3D CPU_INTERRUPT_VFIQ, + [ARM_CPU_NMI] =3D CPU_INTERRUPT_NMI }; =20 if (!arm_feature(env, ARM_FEATURE_EL2) && @@ -957,6 +989,7 @@ static void arm_cpu_set_irq(void *opaque, int irq, int = level) break; case ARM_CPU_IRQ: case ARM_CPU_FIQ: + case ARM_CPU_NMI: if (level) { cpu_interrupt(cs, mask[irq]); } else { @@ -1355,7 +1388,7 @@ static void arm_cpu_initfn(Object *obj) */ qdev_init_gpio_in(DEVICE(cpu), arm_cpu_kvm_set_irq, 4); } else { - qdev_init_gpio_in(DEVICE(cpu), arm_cpu_set_irq, 4); + qdev_init_gpio_in(DEVICE(cpu), arm_cpu_set_irq, 5); } =20 qdev_init_gpio_out(DEVICE(cpu), cpu->gt_timer_outputs, diff --git a/target/arm/cpu.h b/target/arm/cpu.h index ea6e8d6501..b6af1380d3 100644 --- a/target/arm/cpu.h +++ b/target/arm/cpu.h @@ -60,6 +60,7 @@ #define EXCP_DIVBYZERO 23 /* v7M DIVBYZERO UsageFault */ #define EXCP_VSERR 24 #define EXCP_GPC 25 /* v9 Granule Protection Check Fault */ +#define EXCP_NMI 26 /* NB: add new EXCP_ defines to the array in arm_log_exception() too */ =20 #define ARMV7M_EXCP_RESET 1 @@ -79,6 +80,7 @@ #define CPU_INTERRUPT_VIRQ CPU_INTERRUPT_TGT_EXT_2 #define CPU_INTERRUPT_VFIQ CPU_INTERRUPT_TGT_EXT_3 #define CPU_INTERRUPT_VSERR CPU_INTERRUPT_TGT_INT_0 +#define CPU_INTERRUPT_NMI CPU_INTERRUPT_TGT_EXT_4 =20 /* The usual mapping for an AArch64 system register to its AArch32 * counterpart is for the 32 bit world to have access to the lower @@ -1471,6 +1473,8 @@ FIELD(CPTR_EL3, TCPAC, 31, 1) #define CPSR_N (1U << 31) #define CPSR_NZCV (CPSR_N | CPSR_Z | CPSR_C | CPSR_V) #define CPSR_AIF (CPSR_A | CPSR_I | CPSR_F) +#define ISR_FS (1U << 9) +#define ISR_IS (1U << 10) =20 #define CPSR_IT (CPSR_IT_0_1 | CPSR_IT_2_7) #define CACHED_CPSR_BITS (CPSR_T | CPSR_AIF | CPSR_GE | CPSR_IT | CPSR_Q \ @@ -1557,7 +1561,8 @@ FIELD(VTCR, SL2, 33, 1) #define PSTATE_N (1U << 31) #define PSTATE_NZCV (PSTATE_N | PSTATE_Z | PSTATE_C | PSTATE_V) #define PSTATE_DAIF (PSTATE_D | PSTATE_A | PSTATE_I | PSTATE_F) -#define CACHED_PSTATE_BITS (PSTATE_NZCV | PSTATE_DAIF | PSTATE_BTYPE) +#define CACHED_PSTATE_BITS (PSTATE_NZCV | PSTATE_DAIF | PSTATE_ALLINT | \ + PSTATE_BTYPE) /* Mode values for AArch64 */ #define PSTATE_MODE_EL3h 13 #define PSTATE_MODE_EL3t 12 @@ -1597,7 +1602,7 @@ static inline uint32_t pstate_read(CPUARMState *env) ZF =3D (env->ZF =3D=3D 0); return (env->NF & 0x80000000) | (ZF << 30) | (env->CF << 29) | ((env->VF & 0x80000000) >> 3) - | env->pstate | env->daif | (env->btype << 10); + | env->pstate | env->allint | env->daif | (env->btype << 10); } =20 static inline void pstate_write(CPUARMState *env, uint32_t val) @@ -1607,6 +1612,7 @@ static inline void pstate_write(CPUARMState *env, uin= t32_t val) env->CF =3D (val >> 29) & 1; env->VF =3D (val << 3) & 0x80000000; env->daif =3D val & PSTATE_DAIF; + env->allint =3D val & PSTATE_ALLINT; env->btype =3D (val >> 10) & 3; env->pstate =3D val & ~CACHED_PSTATE_BITS; } diff --git a/target/arm/helper.c b/target/arm/helper.c index 1194e1e2db..8d525c6b82 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -2022,6 +2022,10 @@ static uint64_t isr_read(CPUARMState *env, const ARM= CPRegInfo *ri) if (cs->interrupt_request & CPU_INTERRUPT_HARD) { ret |=3D CPSR_I; } + + if (cs->interrupt_request & CPU_INTERRUPT_NMI) { + ret |=3D ISR_IS; + } } =20 if (hcr_el2 & HCR_FMO) { @@ -2032,6 +2036,10 @@ static uint64_t isr_read(CPUARMState *env, const ARM= CPRegInfo *ri) if (cs->interrupt_request & CPU_INTERRUPT_FIQ) { ret |=3D CPSR_F; } + + if (cs->interrupt_request & CPU_INTERRUPT_NMI) { + ret |=3D ISR_FS; + } } =20 if (hcr_el2 & HCR_AMO) { @@ -4626,6 +4634,11 @@ static void aa64_allint_write(CPUARMState *env, cons= t ARMCPRegInfo *ri, } } =20 +static uint64_t aa64_allint_read(CPUARMState *env, const ARMCPRegInfo *ri) +{ + return env->allint & PSTATE_ALLINT; +} + static CPAccessResult aa64_allint_access(CPUARMState *env, const ARMCPRegInfo *ri, bool isre= ad) { @@ -5464,7 +5477,8 @@ static const ARMCPRegInfo v8_cp_reginfo[] =3D { .type =3D ARM_CP_NO_RAW, .access =3D PL1_RW, .accessfn =3D aa64_allint_access, .fieldoffset =3D offsetof(CPUARMState, allint), - .writefn =3D aa64_allint_write, .resetfn =3D arm_cp_reset_ignore }, + .writefn =3D aa64_allint_write, .readfn =3D aa64_allint_read, + .resetfn =3D arm_cp_reset_ignore }, { .name =3D "FPCR", .state =3D ARM_CP_STATE_AA64, .opc0 =3D 3, .opc1 =3D 3, .opc2 =3D 0, .crn =3D 4, .crm =3D 4, .access =3D PL0_RW, .type =3D ARM_CP_FPU | ARM_CP_SUPPRESS_TB_END, @@ -10622,6 +10636,7 @@ void arm_log_exception(CPUState *cs) [EXCP_DIVBYZERO] =3D "v7M DIVBYZERO UsageFault", [EXCP_VSERR] =3D "Virtual SERR", [EXCP_GPC] =3D "Granule Protection Check", + [EXCP_NMI] =3D "NMI" }; =20 if (idx >=3D 0 && idx < ARRAY_SIZE(excnames)) { @@ -11517,6 +11532,15 @@ static void arm_cpu_do_interrupt_aarch64(CPUState = *cs) } } =20 + if (cpu_isar_feature(aa64_nmi, cpu) && + (env->cp15.sctlr_el[new_el] & SCTLR_NMI)) { + if (!(env->cp15.sctlr_el[new_el] & SCTLR_SPINTMASK)) { + new_mode |=3D PSTATE_ALLINT; + } else { + new_mode &=3D ~PSTATE_ALLINT; + } + } + pstate_write(env, PSTATE_DAIF | new_mode); env->aarch64 =3D true; aarch64_restore_sp(env, new_el); diff --git a/target/arm/internals.h b/target/arm/internals.h index 2b9f287c52..28894ba6ea 100644 --- a/target/arm/internals.h +++ b/target/arm/internals.h @@ -1078,6 +1078,9 @@ static inline uint32_t aarch64_pstate_valid_mask(cons= t ARMISARegisters *id) if (isar_feature_aa64_mte(id)) { valid |=3D PSTATE_TCO; } + if (isar_feature_aa64_nmi(id)) { + valid |=3D PSTATE_ALLINT; + } =20 return valid; } --=20 2.34.1 From nobody Thu Nov 14 07:08:58 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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helo=lists.gnu.org; Received-SPF: pass client-ip=45.249.212.190; envelope-from=ruanjinjie@huawei.com; helo=szxga04-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H3=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Tue, 20 Feb 2024 09:13:26 -0500 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: , Reply-to: Jinjie Ruan From: Jinjie Ruan via Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1708438489337100003 Content-Type: text/plain; charset="utf-8" Connect NMI wire from GICv3 to every Arm PE. +-------------------------------------------------+ | Distributor | +-------------------------------------------------+ | NMI | NMI \ / \ / +--------+ +-------+ | redist | | redist| +--------+ +-------+ | NMI | NMI \ / \ / +-------------+ +---------------+ |CPU interface| ... | CPU interface | +-------------+ +---------------+ | NMI | NMI \ / \ / +-----+ +-----+ | PE | | PE | +-----+ +-----+ Support the superpriority property for SPI/SGI/PPI interrupt and these interrupts with a NMI high priority. Also support configure a interrupt with superpriority property with GICR_INMIR0 or GICD_INMIR register. Support ack a NMI interrupt with ICC_NMIAR1_EL1 register. and support PE to distinguish IRQ from FIQ for a NMI. Signed-off-by: Jinjie Ruan --- hw/arm/virt.c | 2 + hw/intc/arm_gicv3.c | 61 ++++++++++++++++++++++++++---- hw/intc/arm_gicv3_common.c | 4 ++ hw/intc/arm_gicv3_cpuif.c | 57 ++++++++++++++++++++++++++-- hw/intc/arm_gicv3_dist.c | 39 +++++++++++++++++++ hw/intc/arm_gicv3_redist.c | 23 +++++++++++ hw/intc/gicv3_internal.h | 5 +++ include/hw/core/cpu.h | 1 + include/hw/intc/arm_gic_common.h | 1 + include/hw/intc/arm_gicv3_common.h | 6 +++ target/arm/helper.c | 5 ++- 11 files changed, 191 insertions(+), 13 deletions(-) diff --git a/hw/arm/virt.c b/hw/arm/virt.c index 0af1943697..5f2683a553 100644 --- a/hw/arm/virt.c +++ b/hw/arm/virt.c @@ -848,6 +848,8 @@ static void create_gic(VirtMachineState *vms, MemoryReg= ion *mem) qdev_get_gpio_in(cpudev, ARM_CPU_VIRQ)); sysbus_connect_irq(gicbusdev, i + 3 * smp_cpus, qdev_get_gpio_in(cpudev, ARM_CPU_VFIQ)); + sysbus_connect_irq(gicbusdev, i + 4 * smp_cpus, + qdev_get_gpio_in(cpudev, ARM_CPU_NMI)); } =20 fdt_add_gic_node(vms); diff --git a/hw/intc/arm_gicv3.c b/hw/intc/arm_gicv3.c index 0b8f79a122..e3281cffdc 100644 --- a/hw/intc/arm_gicv3.c +++ b/hw/intc/arm_gicv3.c @@ -21,7 +21,7 @@ #include "hw/intc/arm_gicv3.h" #include "gicv3_internal.h" =20 -static bool irqbetter(GICv3CPUState *cs, int irq, uint8_t prio) +static bool irqbetter(GICv3CPUState *cs, int irq, uint8_t prio, bool is_nm= i) { /* Return true if this IRQ at this priority should take * precedence over the current recorded highest priority @@ -33,11 +33,21 @@ static bool irqbetter(GICv3CPUState *cs, int irq, uint8= _t prio) if (prio < cs->hppi.prio) { return true; } + + /* + * Current highest prioirity pending interrupt is not a NMI + * and the new IRQ is a NMI with same priority. + */ + if (prio =3D=3D cs->hppi.prio && !cs->hppi.superprio && is_nmi) { + return true; + } + /* If multiple pending interrupts have the same priority then it is an * IMPDEF choice which of them to signal to the CPU. We choose to * signal the one with the lowest interrupt number. */ - if (prio =3D=3D cs->hppi.prio && irq <=3D cs->hppi.irq) { + if (prio =3D=3D cs->hppi.prio && !cs->hppi.superprio && + !is_nmi && irq <=3D cs->hppi.irq) { return true; } return false; @@ -141,6 +151,8 @@ static void gicv3_redist_update_noirqset(GICv3CPUState = *cs) uint8_t prio; int i; uint32_t pend; + bool is_nmi =3D 0; + uint32_t superprio =3D 0; =20 /* Find out which redistributor interrupts are eligible to be * signaled to the CPU interface. @@ -152,10 +164,26 @@ static void gicv3_redist_update_noirqset(GICv3CPUStat= e *cs) if (!(pend & (1 << i))) { continue; } - prio =3D cs->gicr_ipriorityr[i]; - if (irqbetter(cs, i, prio)) { + superprio =3D extract32(cs->gicr_isuperprio, i, 1); + + /* NMI */ + if (superprio) { + is_nmi =3D 1; + + /* DS =3D 0 & Non-secure NMI */ + if ((!(cs->gic->gicd_ctlr & GICD_CTLR_DS)) && + extract32(cs->gicr_igroupr0, i, 1)) + prio =3D 0x80; + else + prio =3D 0x0; + } else { + is_nmi =3D 0; + prio =3D cs->gicr_ipriorityr[i]; + } + if (irqbetter(cs, i, prio, is_nmi)) { cs->hppi.irq =3D i; cs->hppi.prio =3D prio; + cs->hppi.superprio =3D is_nmi; seenbetter =3D true; } } @@ -168,7 +196,7 @@ static void gicv3_redist_update_noirqset(GICv3CPUState = *cs) if ((cs->gicr_ctlr & GICR_CTLR_ENABLE_LPIS) && cs->gic->lpi_enable && (cs->gic->gicd_ctlr & GICD_CTLR_EN_GRP1NS) && (cs->hpplpi.prio !=3D 0xff)) { - if (irqbetter(cs, cs->hpplpi.irq, cs->hpplpi.prio)) { + if (irqbetter(cs, cs->hpplpi.irq, cs->hpplpi.prio, false)) { cs->hppi.irq =3D cs->hpplpi.irq; cs->hppi.prio =3D cs->hpplpi.prio; cs->hppi.grp =3D cs->hpplpi.grp; @@ -212,7 +240,9 @@ static void gicv3_update_noirqset(GICv3State *s, int st= art, int len) { int i; uint8_t prio; + bool is_nmi =3D 0; uint32_t pend =3D 0; + uint32_t superprio =3D 0; =20 assert(start >=3D GIC_INTERNAL); assert(len > 0); @@ -240,10 +270,27 @@ static void gicv3_update_noirqset(GICv3State *s, int = start, int len) */ continue; } - prio =3D s->gicd_ipriority[i]; - if (irqbetter(cs, i, prio)) { + + superprio =3D *gic_bmp_ptr32(s->superprio, i); + /* NMI */ + if (superprio & (1 << (i & 0x1f))) { + is_nmi =3D 1; + + /* DS =3D 0 & Non-secure NMI */ + if ((!(s->gicd_ctlr & GICD_CTLR_DS)) && + gicv3_gicd_group_test(s, i)) + prio =3D 0x80; + else + prio =3D 0x0; + } else { + is_nmi =3D 0; + prio =3D s->gicd_ipriority[i]; + } + + if (irqbetter(cs, i, prio, is_nmi)) { cs->hppi.irq =3D i; cs->hppi.prio =3D prio; + cs->hppi.superprio =3D is_nmi; cs->seenbetter =3D true; } } diff --git a/hw/intc/arm_gicv3_common.c b/hw/intc/arm_gicv3_common.c index cb55c72681..4a56140f4c 100644 --- a/hw/intc/arm_gicv3_common.c +++ b/hw/intc/arm_gicv3_common.c @@ -299,6 +299,9 @@ void gicv3_init_irqs_and_mmio(GICv3State *s, qemu_irq_h= andler handler, for (i =3D 0; i < s->num_cpu; i++) { sysbus_init_irq(sbd, &s->cpu[i].parent_vfiq); } + for (i =3D 0; i < s->num_cpu; i++) { + sysbus_init_irq(sbd, &s->cpu[i].parent_nmi); + } =20 memory_region_init_io(&s->iomem_dist, OBJECT(s), ops, s, "gicv3_dist", 0x10000); @@ -563,6 +566,7 @@ static Property arm_gicv3_common_properties[] =3D { DEFINE_PROP_UINT32("num-irq", GICv3State, num_irq, 32), DEFINE_PROP_UINT32("revision", GICv3State, revision, 3), DEFINE_PROP_BOOL("has-lpi", GICv3State, lpi_enable, 0), + DEFINE_PROP_BOOL("has-nmi", GICv3State, nmi_support, 1), DEFINE_PROP_BOOL("has-security-extensions", GICv3State, security_extn,= 0), /* * Compatibility property: force 8 bits of physical priority, even diff --git a/hw/intc/arm_gicv3_cpuif.c b/hw/intc/arm_gicv3_cpuif.c index e1a60d8c15..9b0ee0cfec 100644 --- a/hw/intc/arm_gicv3_cpuif.c +++ b/hw/intc/arm_gicv3_cpuif.c @@ -931,6 +931,7 @@ void gicv3_cpuif_update(GICv3CPUState *cs) /* Tell the CPU about its highest priority pending interrupt */ int irqlevel =3D 0; int fiqlevel =3D 0; + int nmilevel =3D 0; ARMCPU *cpu =3D ARM_CPU(cs->cpu); CPUARMState *env =3D &cpu->env; =20 @@ -967,7 +968,14 @@ void gicv3_cpuif_update(GICv3CPUState *cs) g_assert_not_reached(); } =20 - if (isfiq) { + if (cs->hppi.superprio) { + nmilevel =3D 1; + if (isfiq) { + cs->cpu->nmi_irq =3D false; + } else { + cs->cpu->nmi_irq =3D true; + } + } else if (isfiq) { fiqlevel =3D 1; } else { irqlevel =3D 1; @@ -978,6 +986,7 @@ void gicv3_cpuif_update(GICv3CPUState *cs) =20 qemu_set_irq(cs->parent_fiq, fiqlevel); qemu_set_irq(cs->parent_irq, irqlevel); + qemu_set_irq(cs->parent_nmi, nmilevel); } =20 static uint64_t icc_pmr_read(CPUARMState *env, const ARMCPRegInfo *ri) @@ -1097,7 +1106,8 @@ static uint64_t icc_hppir0_value(GICv3CPUState *cs, C= PUARMState *env) return cs->hppi.irq; } =20 -static uint64_t icc_hppir1_value(GICv3CPUState *cs, CPUARMState *env) +static uint64_t icc_hppir1_value(GICv3CPUState *cs, CPUARMState *env, + bool is_nmi, bool is_hppi) { /* Return the highest priority pending interrupt register value * for group 1. @@ -1108,6 +1118,16 @@ static uint64_t icc_hppir1_value(GICv3CPUState *cs, = CPUARMState *env) return INTID_SPURIOUS; } =20 + if (!is_hppi) { + if (is_nmi && (!cs->hppi.superprio)) { + return INTID_SPURIOUS; + } + + if ((!is_nmi) && cs->hppi.superprio) { + return INTID_NMI; + } + } + /* Check whether we can return the interrupt or if we should return * a special identifier, as per the CheckGroup1ForSpecialIdentifiers * pseudocode. (We can simplify a little because for us ICC_SRE_EL1.RM @@ -1168,7 +1188,30 @@ static uint64_t icc_iar1_read(CPUARMState *env, cons= t ARMCPRegInfo *ri) if (!icc_hppi_can_preempt(cs)) { intid =3D INTID_SPURIOUS; } else { - intid =3D icc_hppir1_value(cs, env); + intid =3D icc_hppir1_value(cs, env, false, false); + } + + if (!gicv3_intid_is_special(intid)) { + icc_activate_irq(cs, intid); + } + + trace_gicv3_icc_iar1_read(gicv3_redist_affid(cs), intid); + return intid; +} + +static uint64_t icc_nmiar1_read(CPUARMState *env, const ARMCPRegInfo *ri) +{ + GICv3CPUState *cs =3D icc_cs_from_env(env); + uint64_t intid; + + if (icv_access(env, HCR_IMO)) { + return icv_iar_read(env, ri); + } + + if (!icc_hppi_can_preempt(cs)) { + intid =3D INTID_SPURIOUS; + } else { + intid =3D icc_hppir1_value(cs, env, true, false); } =20 if (!gicv3_intid_is_special(intid)) { @@ -1555,7 +1598,7 @@ static uint64_t icc_hppir1_read(CPUARMState *env, con= st ARMCPRegInfo *ri) return icv_hppir_read(env, ri); } =20 - value =3D icc_hppir1_value(cs, env); + value =3D icc_hppir1_value(cs, env, false, true); trace_gicv3_icc_hppir1_read(gicv3_redist_affid(cs), value); return value; } @@ -2344,6 +2387,12 @@ static const ARMCPRegInfo gicv3_cpuif_reginfo[] =3D { .access =3D PL1_R, .accessfn =3D gicv3_irq_access, .readfn =3D icc_iar1_read, }, + { .name =3D "ICC_NMIAR1_EL1", .state =3D ARM_CP_STATE_BOTH, + .opc0 =3D 3, .opc1 =3D 0, .crn =3D 12, .crm =3D 9, .opc2 =3D 5, + .type =3D ARM_CP_IO | ARM_CP_NO_RAW, + .access =3D PL1_R, .accessfn =3D gicv3_irq_access, + .readfn =3D icc_nmiar1_read, + }, { .name =3D "ICC_EOIR1_EL1", .state =3D ARM_CP_STATE_BOTH, .opc0 =3D 3, .opc1 =3D 0, .crn =3D 12, .crm =3D 12, .opc2 =3D 1, .type =3D ARM_CP_IO | ARM_CP_NO_RAW, diff --git a/hw/intc/arm_gicv3_dist.c b/hw/intc/arm_gicv3_dist.c index 35e850685c..a234df44dd 100644 --- a/hw/intc/arm_gicv3_dist.c +++ b/hw/intc/arm_gicv3_dist.c @@ -89,6 +89,29 @@ static int gicd_ns_access(GICv3State *s, int irq) return extract32(s->gicd_nsacr[irq / 16], (irq % 16) * 2, 2); } =20 +static void gicd_write_bitmap_reg(GICv3State *s, MemTxAttrs attrs, + uint32_t *bmp, maskfn *maskfn, + int offset, uint32_t val) +{ + /* + * Helper routine to implement writing to a "set" register + * (GICD_INMIR, etc). + * Semantics implemented here: + * RAZ/WI for SGIs, PPIs, unimplemented IRQs + * Bits corresponding to Group 0 or Secure Group 1 interrupts RAZ/WI. + * offset should be the offset in bytes of the register from the start + * of its group. + */ + int irq =3D offset * 8; + + if (irq < GIC_INTERNAL || irq >=3D s->num_irq) { + return; + } + val &=3D mask_group_and_nsacr(s, attrs, maskfn, irq); + *gic_bmp_ptr32(bmp, irq) =3D val; + gicv3_update(s, irq, 32); +} + static void gicd_write_set_bitmap_reg(GICv3State *s, MemTxAttrs attrs, uint32_t *bmp, maskfn *maskfn, @@ -402,6 +425,7 @@ static bool gicd_readl(GICv3State *s, hwaddr offset, bool dvis =3D s->revision >=3D 4; =20 *data =3D (1 << 25) | (1 << 24) | (dvis << 18) | (sec_extn << 10) | + (s->nmi_support << GICD_TYPER_NMI_SHIFT) | (s->lpi_enable << GICD_TYPER_LPIS_SHIFT) | (0xf << 19) | itlinesnumber; return true; @@ -543,6 +567,14 @@ static bool gicd_readl(GICv3State *s, hwaddr offset, /* RAZ/WI since affinity routing is always enabled */ *data =3D 0; return true; + case GICD_INMIR ... GICD_INMIR + 0x7f: + if (!s->nmi_support) { + *data =3D 0; + return true; + } + *data =3D gicd_read_bitmap_reg(s, attrs, s->superprio, NULL, + offset - GICD_INMIR); + return true; case GICD_IROUTER ... GICD_IROUTER + 0x1fdf: { uint64_t r; @@ -752,6 +784,13 @@ static bool gicd_writel(GICv3State *s, hwaddr offset, case GICD_SPENDSGIR ... GICD_SPENDSGIR + 0xf: /* RAZ/WI since affinity routing is always enabled */ return true; + case GICD_INMIR ... GICD_INMIR + 0x7f: + if (!s->nmi_support) { + return true; + } + gicd_write_bitmap_reg(s, attrs, s->superprio, NULL, + offset - GICD_INMIR, value); + return true; case GICD_IROUTER ... GICD_IROUTER + 0x1fdf: { uint64_t r; diff --git a/hw/intc/arm_gicv3_redist.c b/hw/intc/arm_gicv3_redist.c index 8153525849..87e7823f34 100644 --- a/hw/intc/arm_gicv3_redist.c +++ b/hw/intc/arm_gicv3_redist.c @@ -35,6 +35,15 @@ static int gicr_ns_access(GICv3CPUState *cs, int irq) return extract32(cs->gicr_nsacr, irq * 2, 2); } =20 +static void gicr_write_bitmap_reg(GICv3CPUState *cs, MemTxAttrs attrs, + uint32_t *reg, uint32_t val) +{ + /* Helper routine to implement writing to a "set" register */ + val &=3D mask_group(cs, attrs); + *reg =3D val; + gicv3_redist_update(cs); +} + static void gicr_write_set_bitmap_reg(GICv3CPUState *cs, MemTxAttrs attrs, uint32_t *reg, uint32_t val) { @@ -406,6 +415,13 @@ static MemTxResult gicr_readl(GICv3CPUState *cs, hwadd= r offset, *data =3D value; return MEMTX_OK; } + case GICR_INMIR0: + if (!cs->gic->nmi_support) { + *data =3D 0; + return MEMTX_OK; + } + *data =3D gicr_read_bitmap_reg(cs, attrs, cs->gicr_isuperprio); + return MEMTX_OK; case GICR_ICFGR0: case GICR_ICFGR1: { @@ -555,6 +571,13 @@ static MemTxResult gicr_writel(GICv3CPUState *cs, hwad= dr offset, gicv3_redist_update(cs); return MEMTX_OK; } + case GICR_INMIR0: + if (!cs->gic->nmi_support) { + return MEMTX_OK; + } + gicr_write_bitmap_reg(cs, attrs, &cs->gicr_isuperprio, value); + return MEMTX_OK; + case GICR_ICFGR0: /* Register is all RAZ/WI or RAO/WI bits */ return MEMTX_OK; diff --git a/hw/intc/gicv3_internal.h b/hw/intc/gicv3_internal.h index 29d5cdc1b6..93e56b3726 100644 --- a/hw/intc/gicv3_internal.h +++ b/hw/intc/gicv3_internal.h @@ -52,6 +52,8 @@ #define GICD_SGIR 0x0F00 #define GICD_CPENDSGIR 0x0F10 #define GICD_SPENDSGIR 0x0F20 +#define GICD_INMIR 0x0F80 +#define GICD_INMIRnE 0x3B00 #define GICD_IROUTER 0x6000 #define GICD_IDREGS 0xFFD0 =20 @@ -68,6 +70,7 @@ #define GICD_CTLR_E1NWF (1U << 7) #define GICD_CTLR_RWP (1U << 31) =20 +#define GICD_TYPER_NMI_SHIFT 9 #define GICD_TYPER_LPIS_SHIFT 17 =20 /* 16 bits EventId */ @@ -109,6 +112,7 @@ #define GICR_ICFGR1 (GICR_SGI_OFFSET + 0x0C04) #define GICR_IGRPMODR0 (GICR_SGI_OFFSET + 0x0D00) #define GICR_NSACR (GICR_SGI_OFFSET + 0x0E00) +#define GICR_INMIR0 (GICR_SGI_OFFSET + 0x0F80) =20 /* VLPI redistributor registers, offsets from VLPI_base */ #define GICR_VPROPBASER (GICR_VLPI_OFFSET + 0x70) @@ -507,6 +511,7 @@ FIELD(VTE, RDBASE, 42, RDBASE_PROCNUM_LENGTH) /* Special interrupt IDs */ #define INTID_SECURE 1020 #define INTID_NONSECURE 1021 +#define INTID_NMI 1022 #define INTID_SPURIOUS 1023 =20 /* Functions internal to the emulated GICv3 */ diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h index 4385ce54c9..6c9dc25e5b 100644 --- a/include/hw/core/cpu.h +++ b/include/hw/core/cpu.h @@ -541,6 +541,7 @@ struct CPUState { uint32_t tcg_cflags; uint32_t halted; int32_t exception_index; + bool nmi_irq; =20 AccelCPUState *accel; /* shared by kvm and hvf */ diff --git a/include/hw/intc/arm_gic_common.h b/include/hw/intc/arm_gic_com= mon.h index 7080375008..140f531758 100644 --- a/include/hw/intc/arm_gic_common.h +++ b/include/hw/intc/arm_gic_common.h @@ -69,6 +69,7 @@ struct GICState { =20 qemu_irq parent_irq[GIC_NCPU]; qemu_irq parent_fiq[GIC_NCPU]; + qemu_irq parent_nmi[GIC_NCPU]; qemu_irq parent_virq[GIC_NCPU]; qemu_irq parent_vfiq[GIC_NCPU]; qemu_irq maintenance_irq[GIC_NCPU]; diff --git a/include/hw/intc/arm_gicv3_common.h b/include/hw/intc/arm_gicv3= _common.h index 4e2fb518e7..8f9bcdfac9 100644 --- a/include/hw/intc/arm_gicv3_common.h +++ b/include/hw/intc/arm_gicv3_common.h @@ -146,6 +146,7 @@ typedef struct { int irq; uint8_t prio; int grp; + bool superprio; } PendingIrq; =20 struct GICv3CPUState { @@ -155,6 +156,7 @@ struct GICv3CPUState { qemu_irq parent_fiq; qemu_irq parent_virq; qemu_irq parent_vfiq; + qemu_irq parent_nmi; =20 /* Redistributor */ uint32_t level; /* Current IRQ level */ @@ -170,6 +172,7 @@ struct GICv3CPUState { uint32_t gicr_ienabler0; uint32_t gicr_ipendr0; uint32_t gicr_iactiver0; + uint32_t gicr_isuperprio; uint32_t edge_trigger; /* ICFGR0 and ICFGR1 even bits */ uint32_t gicr_igrpmodr0; uint32_t gicr_nsacr; @@ -247,6 +250,7 @@ struct GICv3State { uint32_t num_irq; uint32_t revision; bool lpi_enable; + bool nmi_support; bool security_extn; bool force_8bit_prio; bool irq_reset_nonsecure; @@ -272,6 +276,7 @@ struct GICv3State { GIC_DECLARE_BITMAP(active); /* GICD_ISACTIVER */ GIC_DECLARE_BITMAP(level); /* Current level */ GIC_DECLARE_BITMAP(edge_trigger); /* GICD_ICFGR even bits */ + GIC_DECLARE_BITMAP(superprio); /* GICD_INMIR */ uint8_t gicd_ipriority[GICV3_MAXIRQ]; uint64_t gicd_irouter[GICV3_MAXIRQ]; /* Cached information: pointer to the cpu i/f for the CPUs specified @@ -311,6 +316,7 @@ GICV3_BITMAP_ACCESSORS(pending) GICV3_BITMAP_ACCESSORS(active) GICV3_BITMAP_ACCESSORS(level) GICV3_BITMAP_ACCESSORS(edge_trigger) +GICV3_BITMAP_ACCESSORS(superprio) =20 #define TYPE_ARM_GICV3_COMMON "arm-gicv3-common" typedef struct ARMGICv3CommonClass ARMGICv3CommonClass; diff --git a/target/arm/helper.c b/target/arm/helper.c index 8d525c6b82..9bf0073840 100644 --- a/target/arm/helper.c +++ b/target/arm/helper.c @@ -2023,7 +2023,7 @@ static uint64_t isr_read(CPUARMState *env, const ARMC= PRegInfo *ri) ret |=3D CPSR_I; } =20 - if (cs->interrupt_request & CPU_INTERRUPT_NMI) { + if ((cs->interrupt_request & CPU_INTERRUPT_NMI) && cs->nmi_irq) { ret |=3D ISR_IS; } } @@ -2037,7 +2037,7 @@ static uint64_t isr_read(CPUARMState *env, const ARMC= PRegInfo *ri) ret |=3D CPSR_F; } =20 - if (cs->interrupt_request & CPU_INTERRUPT_NMI) { + if ((cs->interrupt_request & CPU_INTERRUPT_NMI) && !cs->nmi_irq) { ret |=3D ISR_FS; } } @@ -11452,6 +11452,7 @@ static void arm_cpu_do_interrupt_aarch64(CPUState *= cs) break; case EXCP_IRQ: case EXCP_VIRQ: + case EXCP_NMI: addr +=3D 0x80; break; case EXCP_FIQ: --=20 2.34.1