From nobody Sat Nov 15 16:38:19 2025 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 Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1750323177724436.23080239624187; Thu, 19 Jun 2025 01:52:57 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uSB0C-0004YR-RZ; Thu, 19 Jun 2025 04:52:09 -0400 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 1uSAzu-0004Wc-TU for qemu-devel@nongnu.org; Thu, 19 Jun 2025 04:51:52 -0400 Received: from mail.loongson.cn ([114.242.206.163]) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1uSAzs-000317-Ng for qemu-devel@nongnu.org; Thu, 19 Jun 2025 04:51:50 -0400 Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxGHGYz1NonLUZAQ--.61406S3; Thu, 19 Jun 2025 16:51:36 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front1 (Coremail) with SMTP id qMiowMAxDcVtz1NohtwgAQ--.30176S15; Thu, 19 Jun 2025 16:51:34 +0800 (CST) From: Song Gao To: qemu-devel@nongnu.org Cc: stefanha@gmail.com, Bibo Mao Subject: [PULL 13/14] hw/loongarch/virt: Add kernel irqchip support Date: Thu, 19 Jun 2025 16:28:16 +0800 Message-Id: <20250619082817.1517996-14-gaosong@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20250619082817.1517996-1-gaosong@loongson.cn> References: <20250619082817.1517996-1-gaosong@loongson.cn> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-CM-TRANSID: qMiowMAxDcVtz1NohtwgAQ--.30176S15 X-CM-SenderInfo: 5jdr20tqj6z05rqj20fqof0/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== 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=114.242.206.163; envelope-from=gaosong@loongson.cn; helo=mail.loongson.cn 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, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=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: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZM-MESSAGEID: 1750323178685116600 Content-Type: text/plain; charset="utf-8" From: Bibo Mao If kvm_irqchip_in_kernel() return true, interrupt controller ExtIOI, IPI, PCH_PCI and PCH_MSI should be emlated in kernel. And it is not necessary to create memory region for these devices in user space. Reviewed-by: Song Gao Signed-off-by: Bibo Mao Message-ID: <20250606063607.2557540-1-maobibo@loongson.cn> Signed-off-by: Song Gao --- hw/loongarch/virt.c | 57 ++++++++++++++++++++++---------------- target/loongarch/cpu.h | 1 + target/loongarch/kvm/kvm.c | 16 +++++++++++ 3 files changed, 50 insertions(+), 24 deletions(-) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index e5468b6af9..b15ada2078 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -414,12 +414,6 @@ static void virt_irq_init(LoongArchVirtMachineState *l= vms) lvms->ipi =3D ipi; sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); =20 - /* IPI iocsr memory region */ - memory_region_add_subregion(&lvms->system_iocsr, SMP_IPI_MAILBOX, - sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 0)); - memory_region_add_subregion(&lvms->system_iocsr, MAIL_SEND_ADDR, - sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 1)); - /* Create EXTIOI device */ extioi =3D qdev_new(TYPE_LOONGARCH_EXTIOI); lvms->extioi =3D extioi; @@ -427,12 +421,6 @@ static void virt_irq_init(LoongArchVirtMachineState *l= vms) qdev_prop_set_bit(extioi, "has-virtualization-extension", true); } sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal); - memory_region_add_subregion(&lvms->system_iocsr, APIC_BASE, - sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0)); - if (virt_is_veiointc_enabled(lvms)) { - memory_region_add_subregion(&lvms->system_iocsr, EXTIOI_VIRT_BASE, - sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 1)); - } =20 virt_cpu_irq_init(lvms); pch_pic =3D qdev_new(TYPE_LOONGARCH_PIC); @@ -440,13 +428,6 @@ static void virt_irq_init(LoongArchVirtMachineState *l= vms) qdev_prop_set_uint32(pch_pic, "pch_pic_irq_num", num); d =3D SYS_BUS_DEVICE(pch_pic); sysbus_realize_and_unref(d, &error_fatal); - memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_BASE, - sysbus_mmio_get_region(d, 0)); - - /* Connect pch_pic irqs to extioi */ - for (i =3D 0; i < num; i++) { - qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i)); - } =20 pch_msi =3D qdev_new(TYPE_LOONGARCH_PCH_MSI); start =3D num; @@ -456,12 +437,40 @@ static void virt_irq_init(LoongArchVirtMachineState *= lvms) d =3D SYS_BUS_DEVICE(pch_msi); sysbus_realize_and_unref(d, &error_fatal); sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW); - for (i =3D 0; i < num; i++) { - /* Connect pch_msi irqs to extioi */ - qdev_connect_gpio_out(DEVICE(d), i, - qdev_get_gpio_in(extioi, i + start)); - } =20 + if (kvm_irqchip_in_kernel()) { + kvm_loongarch_init_irq_routing(); + } else { + /* IPI iocsr memory region */ + memory_region_add_subregion(&lvms->system_iocsr, SMP_IPI_MAILBOX, + sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 0)); + memory_region_add_subregion(&lvms->system_iocsr, MAIL_SEND_ADDR, + sysbus_mmio_get_region(SYS_BUS_DEVICE(ipi), 1)); + + /* EXTIOI iocsr memory region */ + memory_region_add_subregion(&lvms->system_iocsr, APIC_BASE, + sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 0)); + if (virt_is_veiointc_enabled(lvms)) { + memory_region_add_subregion(&lvms->system_iocsr, EXTIOI_VIRT_B= ASE, + sysbus_mmio_get_region(SYS_BUS_DEVICE(extioi), 1)); + } + + /* PCH_PIC memory region */ + memory_region_add_subregion(get_system_memory(), VIRT_IOAPIC_REG_B= ASE, + sysbus_mmio_get_region(SYS_BUS_DEVICE(pch_pic), 0)); + + /* Connect pch_pic irqs to extioi */ + for (i =3D 0; i < VIRT_PCH_PIC_IRQ_NUM; i++) { + qdev_connect_gpio_out(DEVICE(pch_pic), i, + qdev_get_gpio_in(extioi, i)); + } + + for (i =3D VIRT_PCH_PIC_IRQ_NUM; i < EXTIOI_IRQS; i++) { + /* Connect pch_msi irqs to extioi */ + qdev_connect_gpio_out(DEVICE(pch_msi), i - VIRT_PCH_PIC_IRQ_NU= M, + qdev_get_gpio_in(extioi, i)); + } + } virt_devices_init(pch_pic, lvms); } =20 diff --git a/target/loongarch/cpu.h b/target/loongarch/cpu.h index 262bf87f7b..9538e8d61d 100644 --- a/target/loongarch/cpu.h +++ b/target/loongarch/cpu.h @@ -503,5 +503,6 @@ static inline void kvm_loongarch_cpu_post_init(LoongArc= hCPU *cpu) { } #endif +void kvm_loongarch_init_irq_routing(void); =20 #endif /* LOONGARCH_CPU_H */ diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c index c5d488aa42..e5ea2dba9d 100644 --- a/target/loongarch/kvm/kvm.c +++ b/target/loongarch/kvm/kvm.c @@ -1240,6 +1240,22 @@ void kvm_arch_init_irq_routing(KVMState *s) { } =20 +void kvm_loongarch_init_irq_routing(void) +{ + int i; + + kvm_async_interrupts_allowed =3D true; + kvm_msi_via_irqfd_allowed =3D kvm_irqfds_enabled(); + if (kvm_has_gsi_routing()) { + for (i =3D 0; i < KVM_IRQCHIP_NUM_PINS; ++i) { + kvm_irqchip_add_irq_route(kvm_state, i, 0, i); + } + + kvm_gsi_routing_allowed =3D true; + kvm_irqchip_commit_routes(kvm_state); + } +} + int kvm_arch_get_default_type(MachineState *ms) { return 0; --=20 2.47.0