From patchwork Sat Nov 20 07:46:39 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yifei Jiang X-Patchwork-Id: 12630187 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 1373FC433EF for ; Sat, 20 Nov 2021 07:58:36 +0000 (UTC) Received: from localhost ([::1]:42502 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1moLGd-0006qi-75 for qemu-devel@archiver.kernel.org; Sat, 20 Nov 2021 02:58:35 -0500 Received: from eggs.gnu.org ([209.51.188.92]:46414) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1moL5b-00045A-Pz; Sat, 20 Nov 2021 02:47:11 -0500 Received: from szxga02-in.huawei.com ([45.249.212.188]:4107) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1moL5V-0006f1-Kh; Sat, 20 Nov 2021 02:47:11 -0500 Received: from dggemv711-chm.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4Hx5Fq45KYz9193; Sat, 20 Nov 2021 15:46:39 +0800 (CST) Received: from kwepemm600017.china.huawei.com (7.193.23.234) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.20; Sat, 20 Nov 2021 15:47:02 +0800 Received: from huawei.com (10.174.186.236) by kwepemm600017.china.huawei.com (7.193.23.234) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.15; Sat, 20 Nov 2021 15:47:01 +0800 From: Yifei Jiang To: , Subject: [PATCH v1 07/12] target/riscv: Support setting external interrupt by KVM Date: Sat, 20 Nov 2021 15:46:39 +0800 Message-ID: <20211120074644.729-8-jiangyifei@huawei.com> X-Mailer: git-send-email 2.26.2.windows.1 In-Reply-To: <20211120074644.729-1-jiangyifei@huawei.com> References: <20211120074644.729-1-jiangyifei@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.186.236] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemm600017.china.huawei.com (7.193.23.234) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.188; envelope-from=jiangyifei@huawei.com; helo=szxga02-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_H2=-0.001, 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: , Cc: bin.meng@windriver.com, Mingwang Li , kvm@vger.kernel.org, libvir-list@redhat.com, anup.patel@wdc.com, wanbo13@huawei.com, Yifei Jiang , Alistair Francis , kvm-riscv@lists.infradead.org, wanghaibin.wang@huawei.com, palmer@dabbelt.com, fanliang@huawei.com, wu.wubin@huawei.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Extend riscv_cpu_update_mip() to support setting external interrupt by KVM. It will call kvm_riscv_set_irq() to change the IRQ state in the KVM module When kvm is enabled and the MIP_SEIP bit is set in "mask" In addition, bacause target/riscv/cpu_helper.c is used to TCG, so move riscv_cpu_update_mip() to target/riscv/cpu.c from target/riscv/cpu_helper.c Signed-off-by: Yifei Jiang Signed-off-by: Mingwang Li Reviewed-by: Alistair Francis --- target/riscv/cpu.c | 34 ++++++++++++++++++++++++++++++++++ target/riscv/cpu_helper.c | 27 --------------------------- target/riscv/kvm-stub.c | 5 +++++ target/riscv/kvm.c | 20 ++++++++++++++++++++ target/riscv/kvm_riscv.h | 1 + 5 files changed, 60 insertions(+), 27 deletions(-) diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c index 1c944872a3..a464845c99 100644 --- a/target/riscv/cpu.c +++ b/target/riscv/cpu.c @@ -21,6 +21,7 @@ #include "qemu/qemu-print.h" #include "qemu/ctype.h" #include "qemu/log.h" +#include "qemu/main-loop.h" #include "cpu.h" #include "internals.h" #include "exec/exec-all.h" @@ -131,6 +132,39 @@ static void set_feature(CPURISCVState *env, int feature) env->features |= (1ULL << feature); } +#ifndef CONFIG_USER_ONLY +uint32_t riscv_cpu_update_mip(RISCVCPU *cpu, uint32_t mask, uint32_t value) +{ + CPURISCVState *env = &cpu->env; + CPUState *cs = CPU(cpu); + uint32_t old = env->mip; + bool locked = false; + + if (!qemu_mutex_iothread_locked()) { + locked = true; + qemu_mutex_lock_iothread(); + } + + env->mip = (env->mip & ~mask) | (value & mask); + + if (kvm_enabled() && (mask & MIP_SEIP)) { + kvm_riscv_set_irq(RISCV_CPU(cpu), IRQ_S_EXT, value & MIP_SEIP); + } + + if (env->mip) { + cpu_interrupt(cs, CPU_INTERRUPT_HARD); + } else { + cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); + } + + if (locked) { + qemu_mutex_unlock_iothread(); + } + + return old; +} +#endif + static void set_resetvec(CPURISCVState *env, target_ulong resetvec) { #ifndef CONFIG_USER_ONLY diff --git a/target/riscv/cpu_helper.c b/target/riscv/cpu_helper.c index 9eeed38c7e..5e36c35b15 100644 --- a/target/riscv/cpu_helper.c +++ b/target/riscv/cpu_helper.c @@ -286,33 +286,6 @@ int riscv_cpu_claim_interrupts(RISCVCPU *cpu, uint32_t interrupts) } } -uint32_t riscv_cpu_update_mip(RISCVCPU *cpu, uint32_t mask, uint32_t value) -{ - CPURISCVState *env = &cpu->env; - CPUState *cs = CPU(cpu); - uint32_t old = env->mip; - bool locked = false; - - if (!qemu_mutex_iothread_locked()) { - locked = true; - qemu_mutex_lock_iothread(); - } - - env->mip = (env->mip & ~mask) | (value & mask); - - if (env->mip) { - cpu_interrupt(cs, CPU_INTERRUPT_HARD); - } else { - cpu_reset_interrupt(cs, CPU_INTERRUPT_HARD); - } - - if (locked) { - qemu_mutex_unlock_iothread(); - } - - return old; -} - void riscv_cpu_set_rdtime_fn(CPURISCVState *env, uint64_t (*fn)(uint32_t), uint32_t arg) { diff --git a/target/riscv/kvm-stub.c b/target/riscv/kvm-stub.c index 39b96fe3f4..4e8fc31a21 100644 --- a/target/riscv/kvm-stub.c +++ b/target/riscv/kvm-stub.c @@ -23,3 +23,8 @@ void kvm_riscv_reset_vcpu(RISCVCPU *cpu) { abort(); } + +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level) +{ + abort(); +} diff --git a/target/riscv/kvm.c b/target/riscv/kvm.c index 7f3ffcc2b4..8da2648d1a 100644 --- a/target/riscv/kvm.c +++ b/target/riscv/kvm.c @@ -458,6 +458,26 @@ void kvm_riscv_reset_vcpu(RISCVCPU *cpu) env->satp = 0; } +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level) +{ + int ret; + unsigned virq = level ? KVM_INTERRUPT_SET : KVM_INTERRUPT_UNSET; + + if (irq != IRQ_S_EXT) { + return; + } + + if (!kvm_enabled()) { + return; + } + + ret = kvm_vcpu_ioctl(CPU(cpu), KVM_INTERRUPT, &virq); + if (ret < 0) { + perror("Set irq failed"); + abort(); + } +} + bool kvm_arch_cpu_check_are_resettable(void) { return true; diff --git a/target/riscv/kvm_riscv.h b/target/riscv/kvm_riscv.h index f38c82bf59..ed281bdce0 100644 --- a/target/riscv/kvm_riscv.h +++ b/target/riscv/kvm_riscv.h @@ -20,5 +20,6 @@ #define QEMU_KVM_RISCV_H void kvm_riscv_reset_vcpu(RISCVCPU *cpu); +void kvm_riscv_set_irq(RISCVCPU *cpu, int irq, int level); #endif