From patchwork Tue Sep 10 12:18:28 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xianglai Li X-Patchwork-Id: 13798468 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id F28E818E76F for ; Tue, 10 Sep 2024 12:36:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971787; cv=none; b=Bz+/tXyLZEpjhJMgCy3DhcQ3ClQ9Qzntkucb4kvWYDho3Q1W1qxMF25D/InJFdLiin7/rPr4Wl55Pbs/2RgPKM3YOboiVEBkTUVuYjHqWkkvdnaoLarJguj/6f55ERfBKMKqRhRs5VBkpNQLxzFMtPELGrsaE+GqmwDijNeZtlM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971787; c=relaxed/simple; bh=gt47L2/1sVzeqKcmzd/Rk+RpmgTdVGiIBt3nBws+vjk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=MpI0SS9nBF36WZp6dqSga22hyRcQ1TjMNnZLv7gLXWf1FrJ2N4iVkeT/bn8jRAUrg4q1sAmy5zRRylkPZP52hOhvthl+/qf1iwpTi9ZynA2y6vgOjUvGE1o4JM2zF9fIIzZu6c36ReS2fGrVyiewhxArqAThNVbDt0lsJW+z1cw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8CxC+pFPeBmabkDAA--.8774S3; Tue, 10 Sep 2024 20:36:22 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front2 (Coremail) with SMTP id qciowMBx+cVCPeBmXGoDAA--.15753S3; Tue, 10 Sep 2024 20:36:20 +0800 (CST) From: Xianglai Li To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Song Gao , Jiaxun Yang , Huacai Chen , "Michael S. Tsirkin" , Cornelia Huck , kvm@vger.kernel.org, Bibo Mao Subject: [RFC PATCH V2 1/5] include: Add macro definitions needed for interrupt controller kvm emulation Date: Tue, 10 Sep 2024 20:18:28 +0800 Message-Id: <2182eb694629ee3f2859e441b8076d62d3606ee2.1725969898.git.lixianglai@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: qciowMBx+cVCPeBmXGoDAA--.15753S3 X-CM-SenderInfo: 5ol0xt5qjotxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Add macro definitions needed for interrupt controller kvm emulation. Signed-off-by: Xianglai Li --- Cc: Paolo Bonzini Cc: Song Gao Cc: Jiaxun Yang Cc: Huacai Chen Cc: "Michael S. Tsirkin" Cc: Cornelia Huck Cc: kvm@vger.kernel.org Cc: Bibo Mao Cc: Xianglai Li include/hw/intc/loongarch_extioi.h | 38 ++++++++++++++++-- include/hw/intc/loongarch_ipi.h | 15 +++++++ include/hw/intc/loongarch_pch_pic.h | 58 +++++++++++++++++++++++++-- include/hw/intc/loongson_ipi.h | 1 - include/hw/intc/loongson_ipi_common.h | 2 + include/hw/loongarch/virt.h | 15 +++++++ linux-headers/asm-loongarch/kvm.h | 18 +++++++++ linux-headers/linux/kvm.h | 6 +++ 8 files changed, 146 insertions(+), 7 deletions(-) diff --git a/include/hw/intc/loongarch_extioi.h b/include/hw/intc/loongarch_extioi.h index 626a37dfa1..97f6aa4d60 100644 --- a/include/hw/intc/loongarch_extioi.h +++ b/include/hw/intc/loongarch_extioi.h @@ -15,7 +15,7 @@ #define EXTIOI_IRQS (256) #define EXTIOI_IRQS_BITMAP_SIZE (256 / 8) /* irq from EXTIOI is routed to no more than 4 cpus */ -#define EXTIOI_CPUS (4) +#define EXTIOI_CPUS (256) /* map to ipnum per 32 irqs */ #define EXTIOI_IRQS_IPMAP_SIZE (256 / 32) #define EXTIOI_IRQS_COREMAP_SIZE 256 @@ -36,7 +36,7 @@ #define EXTIOI_ISR_START (0x700 - APIC_OFFSET) #define EXTIOI_ISR_END (0x720 - APIC_OFFSET) #define EXTIOI_COREISR_START (0x800 - APIC_OFFSET) -#define EXTIOI_COREISR_END (0xB20 - APIC_OFFSET) +#define EXTIOI_COREISR_END (0x820 - APIC_OFFSET) #define EXTIOI_COREMAP_START (0xC00 - APIC_OFFSET) #define EXTIOI_COREMAP_END (0xD00 - APIC_OFFSET) #define EXTIOI_SIZE 0x800 @@ -64,7 +64,8 @@ typedef struct ExtIOICore { qemu_irq parent_irq[LS3A_INTC_IP]; } ExtIOICore; -#define TYPE_LOONGARCH_EXTIOI "loongarch.extioi" +#define TYPE_LOONGARCH_EXTIOI "loongarch-extioi" +#define TYPE_KVM_LOONGARCH_EXTIOI "loongarch-kvm-extioi" OBJECT_DECLARE_SIMPLE_TYPE(LoongArchExtIOI, LOONGARCH_EXTIOI) struct LoongArchExtIOI { SysBusDevice parent_obj; @@ -86,4 +87,35 @@ struct LoongArchExtIOI { MemoryRegion extioi_system_mem; MemoryRegion virt_extend; }; + +struct KVMLoongArchExtIOI { + SysBusDevice parent_obj; + uint32_t num_cpu; + uint32_t features; + uint32_t status; + + /* hardware state */ + uint32_t nodetype[EXTIOI_IRQS_NODETYPE_COUNT / 2]; + uint32_t bounce[EXTIOI_IRQS_GROUP_COUNT]; + uint32_t isr[EXTIOI_IRQS / 32]; + uint32_t coreisr[EXTIOI_CPUS][EXTIOI_IRQS_GROUP_COUNT]; + uint32_t enable[EXTIOI_IRQS / 32]; + uint32_t ipmap[EXTIOI_IRQS_IPMAP_SIZE / 4]; + uint32_t coremap[EXTIOI_IRQS / 4]; + uint8_t sw_coremap[EXTIOI_IRQS]; +}; +typedef struct KVMLoongArchExtIOI KVMLoongArchExtIOI; +DECLARE_INSTANCE_CHECKER(KVMLoongArchExtIOI, KVM_LOONGARCH_EXTIOI, + TYPE_KVM_LOONGARCH_EXTIOI) + +struct KVMLoongArchExtIOIClass { + SysBusDeviceClass parent_class; + DeviceRealize parent_realize; + + bool is_created; + int dev_fd; +}; +typedef struct KVMLoongArchExtIOIClass KVMLoongArchExtIOIClass; +DECLARE_CLASS_CHECKERS(KVMLoongArchExtIOIClass, KVM_LOONGARCH_EXTIOI, + TYPE_KVM_LOONGARCH_EXTIOI) #endif /* LOONGARCH_EXTIOI_H */ diff --git a/include/hw/intc/loongarch_ipi.h b/include/hw/intc/loongarch_ipi.h index 276b3040a3..64ebbdcba6 100644 --- a/include/hw/intc/loongarch_ipi.h +++ b/include/hw/intc/loongarch_ipi.h @@ -22,4 +22,19 @@ struct LoongarchIPIClass { LoongsonIPICommonClass parent_class; }; +#define TYPE_KVM_LOONGARCH_IPI "kvm_loongarch_ipi" + +OBJECT_DECLARE_TYPE(KVMLoongarchIPIState, + KVMLoongArchIPIClass, KVM_LOONGARCH_IPI) + +struct KVMLoongarchIPIState { + LoongsonIPICommonState parent_obj; + int dev_fd; +}; + +struct KVMLoongArchIPIClass { + LoongsonIPICommonClass parent_class; + DeviceRealize parent_realize; + DeviceUnrealize parent_unrealize; +}; #endif diff --git a/include/hw/intc/loongarch_pch_pic.h b/include/hw/intc/loongarch_pch_pic.h index d5437e88f2..bbde9e6de9 100644 --- a/include/hw/intc/loongarch_pch_pic.h +++ b/include/hw/intc/loongarch_pch_pic.h @@ -5,9 +5,13 @@ * Copyright (c) 2021 Loongson Technology Corporation Limited */ +#ifndef LOONGARCH_PCH_PIC_H +#define LOONGARCH_PCH_PIC_H + #include "hw/sysbus.h" -#define TYPE_LOONGARCH_PCH_PIC "loongarch_pch_pic" +#define TYPE_LOONGARCH_PCH_PIC "loongarch_pch_pic" +#define TYPE_KVM_LOONGARCH_PCH_PIC "loongarch_kvm_pch_pic" #define PCH_PIC_NAME(name) TYPE_LOONGARCH_PCH_PIC#name OBJECT_DECLARE_SIMPLE_TYPE(LoongArchPCHPIC, LOONGARCH_PCH_PIC) @@ -28,15 +32,26 @@ OBJECT_DECLARE_SIMPLE_TYPE(LoongArchPCHPIC, LOONGARCH_PCH_PIC) #define PCH_PIC_AUTO_CTRL0_HI 0xc4 #define PCH_PIC_AUTO_CTRL1_LO 0xe0 #define PCH_PIC_AUTO_CTRL1_HI 0xe4 -#define PCH_PIC_ROUTE_ENTRY_OFFSET 0x100 +#define PCH_PIC_ROUTE_ENTRY_START 0x100 #define PCH_PIC_ROUTE_ENTRY_END 0x13f -#define PCH_PIC_HTMSI_VEC_OFFSET 0x200 +#define PCH_PIC_HTMSI_VEC_START 0x200 #define PCH_PIC_HTMSI_VEC_END 0x23f #define PCH_PIC_INT_STATUS_LO 0x3a0 #define PCH_PIC_INT_STATUS_HI 0x3a4 #define PCH_PIC_INT_POL_LO 0x3e0 #define PCH_PIC_INT_POL_HI 0x3e4 +#define PCH_PIC_INT_ID_START PCH_PIC_INT_ID_LO +#define PCH_PIC_MASK_START PCH_PIC_INT_MASK_LO +#define PCH_PIC_HTMSI_EN_START PCH_PIC_HTMSI_EN_LO +#define PCH_PIC_EDGE_START PCH_PIC_INT_EDGE_LO +#define PCH_PIC_CLEAR_START PCH_PIC_INT_CLEAR_LO +#define PCH_PIC_AUTO_CTRL0_START PCH_PIC_AUTO_CTRL0_LO +#define PCH_PIC_AUTO_CTRL1_START PCH_PIC_AUTO_CTRL1_LO +#define PCH_PIC_INT_IRR_START 0x380 +#define PCH_PIC_INT_ISR_START PCH_PIC_INT_STATUS_LO +#define PCH_PIC_POLARITY_START PCH_PIC_INT_POL_LO + #define STATUS_LO_START 0 #define STATUS_HI_START 0x4 #define POL_LO_START 0x40 @@ -67,3 +82,40 @@ struct LoongArchPCHPIC { MemoryRegion iomem8; unsigned int irq_num; }; + +struct KVMLoongArchPCHPIC { + SysBusDevice parent_obj; + uint64_t int_mask; /*0x020 interrupt mask register*/ + uint64_t htmsi_en; /*0x040 1=msi*/ + uint64_t intedge; /*0x060 edge=1 level =0*/ + uint64_t intclr; /*0x080 for clean edge int,set 1 clean,set 0 is noused*/ + uint64_t auto_crtl0; /*0x0c0*/ + uint64_t auto_crtl1; /*0x0e0*/ + uint64_t last_intirr; /* edge detection */ + uint64_t intirr; /* 0x380 interrupt request register */ + uint64_t intisr; /* 0x3a0 interrupt service register */ + /* + * 0x3e0 interrupt level polarity selection + * register 0 for high level trigger + */ + uint64_t int_polarity; + + uint8_t route_entry[64]; /*0x100 - 0x138*/ + uint8_t htmsi_vector[64]; /*0x200 - 0x238*/ +}; +typedef struct KVMLoongArchPCHPIC KVMLoongArchPCHPIC; +DECLARE_INSTANCE_CHECKER(KVMLoongArchPCHPIC, KVM_LOONGARCH_PCH_PIC, + TYPE_KVM_LOONGARCH_PCH_PIC) + +struct KVMLoongArchPCHPICClass { + SysBusDeviceClass parent_class; + DeviceRealize parent_realize; + + bool is_created; + int dev_fd; +}; +typedef struct KVMLoongArchPCHPICClass KVMLoongArchPCHPICClass; +DECLARE_CLASS_CHECKERS(KVMLoongArchPCHPICClass, KVM_LOONGARCH_PCH_PIC, + TYPE_KVM_LOONGARCH_PCH_PIC) + +#endif /* LOONGARCH_PCH_PIC_H */ diff --git a/include/hw/intc/loongson_ipi.h b/include/hw/intc/loongson_ipi.h index 4e517cc8dc..57e0d94e2b 100644 --- a/include/hw/intc/loongson_ipi.h +++ b/include/hw/intc/loongson_ipi.h @@ -27,5 +27,4 @@ struct LoongsonIPIState { MemoryRegion *ipi_mmio_mem; }; - #endif diff --git a/include/hw/intc/loongson_ipi_common.h b/include/hw/intc/loongson_ipi_common.h index df9d9c5168..adba8ffd49 100644 --- a/include/hw/intc/loongson_ipi_common.h +++ b/include/hw/intc/loongson_ipi_common.h @@ -45,6 +45,8 @@ struct LoongsonIPICommonClass { DeviceUnrealize parent_unrealize; AddressSpace *(*get_iocsr_as)(CPUState *cpu); CPUState *(*cpu_by_arch_id)(int64_t id); + void (*pre_save)(LoongsonIPICommonState *s); + void (*post_load)(LoongsonIPICommonState *s, int version_id); }; MemTxResult loongson_ipi_core_readl(void *opaque, hwaddr addr, uint64_t *data, diff --git a/include/hw/loongarch/virt.h b/include/hw/loongarch/virt.h index c373e48f27..c1769fc20c 100644 --- a/include/hw/loongarch/virt.h +++ b/include/hw/loongarch/virt.h @@ -36,6 +36,21 @@ #define FDT_BASE 0x100000 +/* KVM_IRQ_LINE irq field index values */ +#define KVM_LOONGARCH_IRQ_TYPE_SHIFT 24 +#define KVM_LOONGARCH_IRQ_TYPE_MASK 0xff +#define KVM_LOONGARCH_IRQ_VCPU_SHIFT 16 +#define KVM_LOONGARCH_IRQ_VCPU_MASK 0xff +#define KVM_LOONGARCH_IRQ_NUM_SHIFT 0 +#define KVM_LOONGARCH_IRQ_NUM_MASK 0xffff + +/* irq_type field */ +#define KVM_LOONGARCH_IRQ_TYPE_CPU_IP 0 +#define KVM_LOONGARCH_IRQ_TYPE_CPU_IO 1 +#define KVM_LOONGARCH_IRQ_TYPE_HT 2 +#define KVM_LOONGARCH_IRQ_TYPE_MSI 3 +#define KVM_LOONGARCH_IRQ_TYPE_IOAPIC 4 + struct LoongArchVirtMachineState { /*< private >*/ MachineState parent_obj; diff --git a/linux-headers/asm-loongarch/kvm.h b/linux-headers/asm-loongarch/kvm.h index f9abef3823..e102d500a3 100644 --- a/linux-headers/asm-loongarch/kvm.h +++ b/linux-headers/asm-loongarch/kvm.h @@ -108,4 +108,22 @@ struct kvm_iocsr_entry { #define KVM_IRQCHIP_NUM_PINS 64 #define KVM_MAX_CORES 256 +#define KVM_DEV_LOONGARCH_IPI_GRP_REGS 0x40000001 + +#define KVM_DEV_LOONGARCH_EXTIOI_GRP_REGS 0x40000002 + +#define KVM_DEV_LOONGARCH_EXTIOI_GRP_SW_STATUS 0x40000003 +#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_NUM_CPU 0x0 +#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_FEATURE 0x1 +#define KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_STATE 0x2 + +#define KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL 0x40000004 +#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_NUM_CPU 0x0 +#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_FEATURE 0x1 +#define KVM_DEV_LOONGARCH_EXTIOI_CTRL_LOAD_FINISHED 0x3 + +#define KVM_DEV_LOONGARCH_PCH_PIC_GRP_REGS 0x40000005 +#define KVM_DEV_LOONGARCH_PCH_PIC_GRP_CTRL 0x40000006 +#define KVM_DEV_LOONGARCH_PCH_PIC_CTRL_INIT 0 + #endif /* __UAPI_ASM_LOONGARCH_KVM_H */ diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h index c93876ca0b..cd2aed735c 100644 --- a/linux-headers/linux/kvm.h +++ b/linux-headers/linux/kvm.h @@ -1138,6 +1138,12 @@ enum kvm_device_type { #define KVM_DEV_TYPE_ARM_PV_TIME KVM_DEV_TYPE_ARM_PV_TIME KVM_DEV_TYPE_RISCV_AIA, #define KVM_DEV_TYPE_RISCV_AIA KVM_DEV_TYPE_RISCV_AIA + KVM_DEV_TYPE_LOONGARCH_PCH_PIC, +#define KVM_DEV_TYPE_LOONGARCH_PCH_PIC KVM_DEV_TYPE_LOONGARCH_PCH_PIC + KVM_DEV_TYPE_LOONGARCH_IPI, +#define KVM_DEV_TYPE_LOONGARCH_IPI KVM_DEV_TYPE_LOONGARCH_IPI + KVM_DEV_TYPE_LOONGARCH_EXTIOI, +#define KVM_DEV_TYPE_LOONGARCH_EXTIOI KVM_DEV_TYPE_LOONGARCH_EXTIOI KVM_DEV_TYPE_MAX, }; From patchwork Tue Sep 10 12:18:29 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xianglai Li X-Patchwork-Id: 13798467 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8CEC9191484 for ; Tue, 10 Sep 2024 12:36:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971787; cv=none; b=ktXQfQt6eywsKunToX0CHZRppb7o6Re8dwMiKgI/7CxgYBbCMpFqo5RLlBS6fhfMb3GVWalRQLZ4MGIum/wTrRs21bHT3y+KvQq14Vte1H5d7nE9jNDuMd/lWZmsapmvzb5ZxuLeqBUozZG/H0MizRKM0ywrHumyuLexV11haLU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971787; c=relaxed/simple; bh=ttSHtWmp4HDtZ4+pmTms3oqUsWRPHhUMuo+pTn9hbN8=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=kNVousQOpcXUFaiknFFZZygXF9/hhcSykrHVSey9ytKsjt1I4vEndxI85KjXQ7mLlgs6GTwfexWig0AIR36BdT4O7YcMHw1ixZi/VpfkFMsV/8evPBNENq62jP0ZmWPaUA2lqQpWXqjerLOy2N+elrXHgAgJ3TDKVISciWKUtDE= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8DxlehGPeBmb7kDAA--.7651S3; Tue, 10 Sep 2024 20:36:22 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front2 (Coremail) with SMTP id qciowMBx+cVCPeBmXGoDAA--.15753S4; Tue, 10 Sep 2024 20:36:21 +0800 (CST) From: Xianglai Li To: qemu-devel@nongnu.org Cc: Tianrui Zhao , Paolo Bonzini , Song Gao , Jiaxun Yang , Huacai Chen , "Michael S. Tsirkin" , Cornelia Huck , kvm@vger.kernel.org, Bibo Mao Subject: [RFC PATCH V2 2/5] hw/loongarch: Add KVM IPI device support Date: Tue, 10 Sep 2024 20:18:29 +0800 Message-Id: X-Mailer: git-send-email 2.39.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: qciowMBx+cVCPeBmXGoDAA--.15753S4 X-CM-SenderInfo: 5ol0xt5qjotxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Added ipi interrupt controller for kvm emulation. The main process is to send the command word for creating an ipi device to the kernel. When the VM is saved, the ioctl obtains the ipi interrupt controller data in the kernel and saves it. When the VM is recovered, the saved data is sent to the kernel. Signed-off-by: Tianrui Zhao Signed-off-by: Xianglai Li --- Cc: Paolo Bonzini Cc: Song Gao Cc: Jiaxun Yang Cc: Huacai Chen Cc: "Michael S. Tsirkin" Cc: Cornelia Huck Cc: kvm@vger.kernel.org Cc: Bibo Mao Cc: Xianglai Li hw/intc/Kconfig | 3 + hw/intc/loongarch_ipi_kvm.c | 128 ++++++++++++++++++++++++++++++++++ hw/intc/loongson_ipi_common.c | 28 ++++++++ hw/intc/meson.build | 1 + hw/loongarch/Kconfig | 1 + hw/loongarch/virt.c | 40 +++++++---- target/loongarch/kvm/kvm.c | 1 + 7 files changed, 189 insertions(+), 13 deletions(-) create mode 100644 hw/intc/loongarch_ipi_kvm.c diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index dd405bdb5d..5201505f23 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -98,6 +98,9 @@ config LOONGARCH_IPI bool select LOONGSON_IPI_COMMON +config LOONGARCH_IPI_KVM + bool + config LOONGARCH_PCH_PIC bool select UNIMP diff --git a/hw/intc/loongarch_ipi_kvm.c b/hw/intc/loongarch_ipi_kvm.c new file mode 100644 index 0000000000..74ed83d89f --- /dev/null +++ b/hw/intc/loongarch_ipi_kvm.c @@ -0,0 +1,128 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * LoongArch IPI interrupt support + * + * Copyright (C) 2024 Loongson Technology Corporation Limited + */ + +#include "qemu/osdep.h" +#include "hw/boards.h" +#include "sysemu/kvm.h" +#include "qapi/error.h" +#include "hw/intc/loongarch_ipi.h" +#include "target/loongarch/cpu.h" + +static AddressSpace *get_iocsr_as(CPUState *cpu) +{ + return LOONGARCH_CPU(cpu)->env.address_space_iocsr; +} + +static void kvm_ipi_access_regs(int fd, uint64_t addr, + uint32_t *val, bool is_write) +{ + kvm_device_access(fd, KVM_DEV_LOONGARCH_IPI_GRP_REGS, + addr, val, is_write, &error_abort); +} +static void kvm_loongarch_ipi_save_load_regs(void *opaque, bool is_write) +{ + LoongsonIPICommonState *ipi = (LoongsonIPICommonState *)opaque; + KVMLoongarchIPIState *s = KVM_LOONGARCH_IPI(opaque); + IPICore *cpu; + uint64_t attr; + int cpu_id = 0; + int fd = s->dev_fd; + + for (cpu_id = 0; cpu_id < ipi->num_cpu; cpu_id++) { + cpu = &ipi->cpu[cpu_id]; + attr = (cpu_id << 16) | CORE_STATUS_OFF; + kvm_ipi_access_regs(fd, attr, &cpu->status, is_write); + + attr = (cpu_id << 16) | CORE_EN_OFF; + kvm_ipi_access_regs(fd, attr, &cpu->en, is_write); + + attr = (cpu_id << 16) | CORE_SET_OFF; + kvm_ipi_access_regs(fd, attr, &cpu->set, is_write); + + attr = (cpu_id << 16) | CORE_CLEAR_OFF; + kvm_ipi_access_regs(fd, attr, &cpu->clear, is_write); + + attr = (cpu_id << 16) | CORE_BUF_20; + kvm_ipi_access_regs(fd, attr, &cpu->buf[0], is_write); + + attr = (cpu_id << 16) | CORE_BUF_28; + kvm_ipi_access_regs(fd, attr, &cpu->buf[2], is_write); + + attr = (cpu_id << 16) | CORE_BUF_30; + kvm_ipi_access_regs(fd, attr, &cpu->buf[4], is_write); + + attr = (cpu_id << 16) | CORE_BUF_38; + kvm_ipi_access_regs(fd, attr, &cpu->buf[6], is_write); + } +} + +static void kvm_loongarch_ipi_pre_save(LoongsonIPICommonState *opaque) +{ + kvm_loongarch_ipi_save_load_regs(opaque, false); +} + +static void kvm_loongarch_ipi_post_load(LoongsonIPICommonState *opaque, + int version_id) +{ + kvm_loongarch_ipi_save_load_regs(opaque, true); +} + +static void kvm_loongarch_ipi_realize(DeviceState *dev, Error **errp) +{ + KVMLoongarchIPIState *s = KVM_LOONGARCH_IPI(dev); + KVMLoongArchIPIClass *klic = KVM_LOONGARCH_IPI_GET_CLASS(dev); + struct kvm_create_device cd = {0}; + Error *local_err = NULL; + int ret; + + klic->parent_realize(dev, &local_err); + if (local_err) { + error_propagate(errp, local_err); + return; + } + + cd.type = KVM_DEV_TYPE_LOONGARCH_IPI; + ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_DEVICE, &cd); + if (ret < 0) { + error_setg_errno(errp, errno, "Creating the KVM device failed"); + return; + } + s->dev_fd = cd.fd; +} + +static void kvm_loongarch_ipi_unrealize(DeviceState *dev) +{ + KVMLoongArchIPIClass *klic = KVM_LOONGARCH_IPI_GET_CLASS(dev); + klic->parent_unrealize(dev); +} + +static void kvm_loongarch_ipi_class_init(ObjectClass *klass, void *data) +{ + LoongsonIPICommonClass *licc = LOONGSON_IPI_COMMON_CLASS(klass); + KVMLoongArchIPIClass *klic = KVM_LOONGARCH_IPI_CLASS(klass); + DeviceClass *dc = DEVICE_CLASS(klass); + + device_class_set_parent_realize(dc, kvm_loongarch_ipi_realize, + &klic->parent_realize); + device_class_set_parent_unrealize(dc, kvm_loongarch_ipi_unrealize, + &klic->parent_unrealize); + + licc->get_iocsr_as = get_iocsr_as; + licc->cpu_by_arch_id = cpu_by_arch_id; + licc->pre_save = kvm_loongarch_ipi_pre_save; + licc->post_load = kvm_loongarch_ipi_post_load; +} + +static const TypeInfo kvm_loongarch_ipi_types[] = { + { + .name = TYPE_KVM_LOONGARCH_IPI, + .parent = TYPE_LOONGSON_IPI_COMMON, + .class_init = kvm_loongarch_ipi_class_init, + } +}; + +DEFINE_TYPES(kvm_loongarch_ipi_types) diff --git a/hw/intc/loongson_ipi_common.c b/hw/intc/loongson_ipi_common.c index a6ce0181f6..8b0683bd40 100644 --- a/hw/intc/loongson_ipi_common.c +++ b/hw/intc/loongson_ipi_common.c @@ -289,10 +289,38 @@ static void loongson_ipi_common_unrealize(DeviceState *dev) g_free(s->cpu); } +static int loongson_ipi_pre_save(void *opaque) +{ + IPICore *ipicore = (IPICore *)opaque; + LoongsonIPICommonState *s = ipicore->ipi; + LoongsonIPICommonClass *licc = LOONGSON_IPI_COMMON_GET_CLASS(s); + + if (licc->pre_save) { + licc->pre_save(s); + } + + return 0; +} + +static int loongson_ipi_post_load(void *opaque, int version_id) +{ + IPICore *ipicore = (IPICore *)opaque; + LoongsonIPICommonState *s = ipicore->ipi; + LoongsonIPICommonClass *licc = LOONGSON_IPI_COMMON_GET_CLASS(s); + + if (licc->post_load) { + licc->post_load(s, version_id); + } + + return 0; +} + static const VMStateDescription vmstate_ipi_core = { .name = "ipi-single", .version_id = 2, .minimum_version_id = 2, + .pre_save = loongson_ipi_pre_save, + .post_load = loongson_ipi_post_load, .fields = (const VMStateField[]) { VMSTATE_UINT32(status, IPICore), VMSTATE_UINT32(en, IPICore), diff --git a/hw/intc/meson.build b/hw/intc/meson.build index f4d81eb8e4..f55eb1b80b 100644 --- a/hw/intc/meson.build +++ b/hw/intc/meson.build @@ -72,6 +72,7 @@ specific_ss.add(when: 'CONFIG_M68K_IRQC', if_true: files('m68k_irqc.c')) specific_ss.add(when: 'CONFIG_LOONGSON_IPI_COMMON', if_true: files('loongson_ipi_common.c')) specific_ss.add(when: 'CONFIG_LOONGSON_IPI', if_true: files('loongson_ipi.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_IPI', if_true: files('loongarch_ipi.c')) +specific_ss.add(when: 'CONFIG_LOONGARCH_IPI_KVM', if_true: files('loongarch_ipi_kvm.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_PIC', if_true: files('loongarch_pch_pic.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_MSI', if_true: files('loongarch_pch_msi.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI', if_true: files('loongarch_extioi.c')) diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index 0de713a439..f8fcac3e7b 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -16,6 +16,7 @@ config LOONGARCH_VIRT select LOONGARCH_PCH_PIC select LOONGARCH_PCH_MSI select LOONGARCH_EXTIOI + select LOONGARCH_IPI_KVM if KVM select LS7A_RTC select SMBIOS select ACPI_PCI diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 29040422aa..3b28e8e671 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -48,6 +48,7 @@ #include "hw/block/flash.h" #include "hw/virtio/virtio-iommu.h" #include "qemu/error-report.h" +#include "sysemu/kvm.h" static bool virt_is_veiointc_enabled(LoongArchVirtMachineState *lvms) { @@ -788,15 +789,32 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) */ /* Create IPI device */ - ipi = qdev_new(TYPE_LOONGARCH_IPI); - qdev_prop_set_uint32(ipi, "num-cpu", ms->smp.cpus); - sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); - - /* 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)); + if (kvm_enabled() && kvm_irqchip_in_kernel()) { + ipi = qdev_new(TYPE_KVM_LOONGARCH_IPI); + qdev_prop_set_int32(ipi, "num-cpu", ms->smp.cpus); + sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); + } else { + ipi = qdev_new(TYPE_LOONGARCH_IPI); + qdev_prop_set_uint32(ipi, "num-cpu", ms->smp.cpus); + sysbus_realize_and_unref(SYS_BUS_DEVICE(ipi), &error_fatal); + + /* 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)); + + for (cpu = 0; cpu < ms->smp.cpus; cpu++) { + cpu_state = qemu_get_cpu(cpu); + cpudev = DEVICE(cpu_state); + lacpu = LOONGARCH_CPU(cpu_state); + env = &(lacpu->env); + + /* connect ipi irq to cpu irq */ + qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI)); + env->ipistate = ipi; + } + } /* Add cpu interrupt-controller */ fdt_add_cpuic_node(lvms, &cpuintc_phandle); @@ -807,10 +825,6 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) lacpu = LOONGARCH_CPU(cpu_state); env = &(lacpu->env); env->address_space_iocsr = &lvms->as_iocsr; - - /* connect ipi irq to cpu irq */ - qdev_connect_gpio_out(ipi, cpu, qdev_get_gpio_in(cpudev, IRQ_IPI)); - env->ipistate = ipi; } /* Create EXTIOI device */ diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c index e1be6a6959..c07dcfd85f 100644 --- a/target/loongarch/kvm/kvm.c +++ b/target/loongarch/kvm/kvm.c @@ -719,6 +719,7 @@ int kvm_arch_get_default_type(MachineState *ms) int kvm_arch_init(MachineState *ms, KVMState *s) { + s->kernel_irqchip_allowed = false; cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE); return 0; } From patchwork Tue Sep 10 12:18:30 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xianglai Li X-Patchwork-Id: 13798469 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 19AE019148D for ; Tue, 10 Sep 2024 12:36:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971787; cv=none; b=W4jvTx7ZJd76LzbAFn2xqSHEXD8XR9fP2Lu1J4/m/aNZvGbZog8yEy0LKrOjqnSzQrubdsQ+rbAm4ZUhvXU1HH82kHMFBYo+ovEZH5AuzE3JTwTg4lxrSs+AcEFHd5VhuwgADM/0th1vCk4K51Y4k+Qla/0XmhpsS91g/qlk/II= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971787; c=relaxed/simple; bh=KBtJpcze//5uQbhFf8SOrRliWY4UfnxzceCJRa219kY=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=NBLDChkg9Fs/GqanKvaqVWH3PTZFpc7A844K+HuWMEk0vUQEGyN/5X59cyMXptKTYVvXbBXE50gmv22wtftlrdXHVIguIrlIzxCgPgNcHzDNypCVKnODZuyhiU4PWOOlPH8l5O/6ekBb37c1q4qgDffnU0C6nue4Dp79MbzHG5w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxpuhHPeBmdLkDAA--.7536S3; Tue, 10 Sep 2024 20:36:23 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front2 (Coremail) with SMTP id qciowMBx+cVCPeBmXGoDAA--.15753S5; Tue, 10 Sep 2024 20:36:22 +0800 (CST) From: Xianglai Li To: qemu-devel@nongnu.org Cc: Tianrui Zhao , Paolo Bonzini , Song Gao , Jiaxun Yang , Huacai Chen , "Michael S. Tsirkin" , Cornelia Huck , kvm@vger.kernel.org, Bibo Mao Subject: [RFC PATCH V2 3/5] hw/loongarch: Add KVM extioi device support Date: Tue, 10 Sep 2024 20:18:30 +0800 Message-Id: X-Mailer: git-send-email 2.39.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: qciowMBx+cVCPeBmXGoDAA--.15753S5 X-CM-SenderInfo: 5ol0xt5qjotxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Added extioi interrupt controller for kvm emulation. The main process is to send the command word for creating an extioi device to the kernel. When the VM is saved, the ioctl obtains the related data of the extioi interrupt controller in the kernel and saves it. When the VM is recovered, the saved data is sent to the kernel. Signed-off-by: Tianrui Zhao Signed-off-by: Xianglai Li --- Cc: Paolo Bonzini Cc: Song Gao Cc: Jiaxun Yang Cc: Huacai Chen Cc: "Michael S. Tsirkin" Cc: Cornelia Huck Cc: kvm@vger.kernel.org Cc: Bibo Mao Cc: Xianglai Li hw/intc/Kconfig | 3 + hw/intc/loongarch_extioi_kvm.c | 250 +++++++++++++++++++++++++++++++++ hw/intc/meson.build | 1 + hw/loongarch/Kconfig | 1 + hw/loongarch/virt.c | 51 ++++--- 5 files changed, 285 insertions(+), 21 deletions(-) create mode 100644 hw/intc/loongarch_extioi_kvm.c diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index 5201505f23..df9352d41d 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -112,3 +112,6 @@ config LOONGARCH_PCH_MSI config LOONGARCH_EXTIOI bool + +config LOONGARCH_EXTIOI_KVM + bool diff --git a/hw/intc/loongarch_extioi_kvm.c b/hw/intc/loongarch_extioi_kvm.c new file mode 100644 index 0000000000..139a00ac2a --- /dev/null +++ b/hw/intc/loongarch_extioi_kvm.c @@ -0,0 +1,250 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * LoongArch kvm extioi interrupt support + * + * Copyright (C) 2024 Loongson Technology Corporation Limited + */ + +#include "qemu/osdep.h" +#include "hw/qdev-properties.h" +#include "qemu/typedefs.h" +#include "hw/intc/loongarch_extioi.h" +#include "hw/sysbus.h" +#include "linux/kvm.h" +#include "migration/vmstate.h" +#include "qapi/error.h" +#include "sysemu/kvm.h" + +static void kvm_extioi_access_regs(int fd, uint64_t addr, + void *val, bool is_write) +{ + kvm_device_access(fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_REGS, + addr, val, is_write, &error_abort); +} + +static void kvm_extioi_access_sw_status(int fd, uint64_t addr, + void *val, bool is_write) +{ + kvm_device_access(fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_SW_STATUS, + addr, val, is_write, &error_abort); +} + +static void kvm_extioi_save_load_sw_status(void *opaque, bool is_write) +{ + KVMLoongArchExtIOI *s = (KVMLoongArchExtIOI *)opaque; + KVMLoongArchExtIOIClass *class = KVM_LOONGARCH_EXTIOI_GET_CLASS(s); + int fd = class->dev_fd; + int addr; + + addr = KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_NUM_CPU; + kvm_extioi_access_sw_status(fd, addr, (void *)&s->num_cpu, is_write); + + addr = KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_FEATURE; + kvm_extioi_access_sw_status(fd, addr, (void *)&s->features, is_write); + + addr = KVM_DEV_LOONGARCH_EXTIOI_SW_STATUS_STATE; + kvm_extioi_access_sw_status(fd, addr, (void *)&s->status, is_write); +} + +static void kvm_extioi_save_load_regs(void *opaque, bool is_write) +{ + KVMLoongArchExtIOI *s = (KVMLoongArchExtIOI *)opaque; + KVMLoongArchExtIOIClass *class = KVM_LOONGARCH_EXTIOI_GET_CLASS(s); + int fd = class->dev_fd; + int addr, offset, cpuid; + + for (addr = EXTIOI_NODETYPE_START; addr < EXTIOI_NODETYPE_END; addr += 4) { + offset = (addr - EXTIOI_NODETYPE_START) / 4; + kvm_extioi_access_regs(fd, addr, + (void *)&s->nodetype[offset], is_write); + } + + for (addr = EXTIOI_IPMAP_START; addr < EXTIOI_IPMAP_END; addr += 4) { + offset = (addr - EXTIOI_IPMAP_START) / 4; + kvm_extioi_access_regs(fd, addr, (void *)&s->ipmap[offset], is_write); + } + + for (addr = EXTIOI_ENABLE_START; addr < EXTIOI_ENABLE_END; addr += 4) { + offset = (addr - EXTIOI_ENABLE_START) / 4; + kvm_extioi_access_regs(fd, addr, + (void *)&s->enable[offset], is_write); + } + + for (addr = EXTIOI_BOUNCE_START; addr < EXTIOI_BOUNCE_END; addr += 4) { + offset = (addr - EXTIOI_BOUNCE_START) / 4; + kvm_extioi_access_regs(fd, addr, + (void *)&s->bounce[offset], is_write); + } + + for (addr = EXTIOI_ISR_START; addr < EXTIOI_ISR_END; addr += 4) { + offset = (addr - EXTIOI_ISR_START) / 4; + kvm_extioi_access_regs(fd, addr, + (void *)&s->isr[offset], is_write); + } + + for (addr = EXTIOI_COREMAP_START; addr < EXTIOI_COREMAP_END; addr += 4) { + offset = (addr - EXTIOI_COREMAP_START) / 4; + kvm_extioi_access_regs(fd, addr, + (void *)&s->coremap[offset], is_write); + } + + for (cpuid = 0; cpuid < s->num_cpu; cpuid++) { + for (addr = EXTIOI_COREISR_START; + addr < EXTIOI_COREISR_END; addr += 4) { + offset = (addr - EXTIOI_COREISR_START) / 4; + addr = (cpuid << 16) | addr; + kvm_extioi_access_regs(fd, addr, + (void *)&s->coreisr[cpuid][offset], is_write); + } + } +} + +static int kvm_loongarch_extioi_pre_save(void *opaque) +{ + kvm_extioi_save_load_regs(opaque, false); + kvm_extioi_save_load_sw_status(opaque, false); + return 0; +} + +static int kvm_loongarch_extioi_post_load(void *opaque, int version_id) +{ + KVMLoongArchExtIOI *s = (KVMLoongArchExtIOI *)opaque; + KVMLoongArchExtIOIClass *class = KVM_LOONGARCH_EXTIOI_GET_CLASS(s); + int fd = class->dev_fd; + + kvm_extioi_save_load_regs(opaque, true); + kvm_extioi_save_load_sw_status(opaque, true); + + kvm_device_access(fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL, + KVM_DEV_LOONGARCH_EXTIOI_CTRL_LOAD_FINISHED, + NULL, true, &error_abort); + return 0; +} + +static void kvm_loongarch_extioi_realize(DeviceState *dev, Error **errp) +{ + KVMLoongArchExtIOIClass *extioi_class = KVM_LOONGARCH_EXTIOI_GET_CLASS(dev); + KVMLoongArchExtIOI *s = KVM_LOONGARCH_EXTIOI(dev); + struct kvm_create_device cd = {0}; + Error *err = NULL; + int ret, i; + + extioi_class->parent_realize(dev, &err); + if (err) { + error_propagate(errp, err); + return; + } + + if (s->num_cpu == 0) { + error_setg(errp, "num-cpu must be at least 1"); + return; + } + + + if (extioi_class->is_created) { + error_setg(errp, "extioi had be created"); + return; + } + + if (s->features & BIT(EXTIOI_HAS_VIRT_EXTENSION)) { + s->features |= EXTIOI_VIRT_HAS_FEATURES; + } + + cd.type = KVM_DEV_TYPE_LOONGARCH_EXTIOI; + ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_DEVICE, &cd); + if (ret < 0) { + error_setg_errno(errp, errno, + "Creating the KVM extioi device failed"); + return; + } + extioi_class->is_created = true; + extioi_class->dev_fd = cd.fd; + + ret = kvm_device_access(cd.fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL, + KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_NUM_CPU, + &s->num_cpu, true, NULL); + if (ret < 0) { + error_setg_errno(errp, errno, + "KVM EXTIOI: failed to set the num-cpu of EXTIOI"); + exit(1); + } + + ret = kvm_device_access(cd.fd, KVM_DEV_LOONGARCH_EXTIOI_GRP_CTRL, + KVM_DEV_LOONGARCH_EXTIOI_CTRL_INIT_FEATURE, + &s->features, true, NULL); + if (ret < 0) { + error_setg_errno(errp, errno, + "KVM EXTIOI: failed to set the feature of EXTIOI"); + exit(1); + } + + fprintf(stdout, "Create LoongArch extioi irqchip in KVM done!\n"); + + kvm_async_interrupts_allowed = true; + kvm_msi_via_irqfd_allowed = kvm_irqfds_enabled(); + if (kvm_has_gsi_routing()) { + for (i = 0; i < 64; ++i) { + kvm_irqchip_add_irq_route(kvm_state, i, 0, i); + } + kvm_gsi_routing_allowed = true; + } +} + +static const VMStateDescription vmstate_kvm_extioi_core = { + .name = "kvm-extioi-single", + .version_id = 1, + .minimum_version_id = 1, + .pre_save = kvm_loongarch_extioi_pre_save, + .post_load = kvm_loongarch_extioi_post_load, + .fields = (VMStateField[]) { + VMSTATE_UINT32_ARRAY(nodetype, KVMLoongArchExtIOI, + EXTIOI_IRQS_NODETYPE_COUNT / 2), + VMSTATE_UINT32_ARRAY(bounce, KVMLoongArchExtIOI, + EXTIOI_IRQS_GROUP_COUNT), + VMSTATE_UINT32_ARRAY(isr, KVMLoongArchExtIOI, EXTIOI_IRQS / 32), + VMSTATE_UINT32_2DARRAY(coreisr, KVMLoongArchExtIOI, EXTIOI_CPUS, + EXTIOI_IRQS_GROUP_COUNT), + VMSTATE_UINT32_ARRAY(enable, KVMLoongArchExtIOI, EXTIOI_IRQS / 32), + VMSTATE_UINT32_ARRAY(ipmap, KVMLoongArchExtIOI, + EXTIOI_IRQS_IPMAP_SIZE / 4), + VMSTATE_UINT32_ARRAY(coremap, KVMLoongArchExtIOI, EXTIOI_IRQS / 4), + VMSTATE_UINT8_ARRAY(sw_coremap, KVMLoongArchExtIOI, EXTIOI_IRQS), + VMSTATE_UINT32(features, KVMLoongArchExtIOI), + VMSTATE_UINT32(status, KVMLoongArchExtIOI), + VMSTATE_END_OF_LIST() + } +}; + +static Property extioi_properties[] = { + DEFINE_PROP_UINT32("num-cpu", KVMLoongArchExtIOI, num_cpu, 1), + DEFINE_PROP_BIT("has-virtualization-extension", KVMLoongArchExtIOI, + features, EXTIOI_HAS_VIRT_EXTENSION, 0), + DEFINE_PROP_END_OF_LIST(), +}; + +static void kvm_loongarch_extioi_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + KVMLoongArchExtIOIClass *extioi_class = KVM_LOONGARCH_EXTIOI_CLASS(oc); + + extioi_class->parent_realize = dc->realize; + dc->realize = kvm_loongarch_extioi_realize; + extioi_class->is_created = false; + device_class_set_props(dc, extioi_properties); + dc->vmsd = &vmstate_kvm_extioi_core; +} + +static const TypeInfo kvm_loongarch_extioi_info = { + .name = TYPE_KVM_LOONGARCH_EXTIOI, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(KVMLoongArchExtIOI), + .class_size = sizeof(KVMLoongArchExtIOIClass), + .class_init = kvm_loongarch_extioi_class_init, +}; + +static void kvm_loongarch_extioi_register_types(void) +{ + type_register_static(&kvm_loongarch_extioi_info); +} + +type_init(kvm_loongarch_extioi_register_types) diff --git a/hw/intc/meson.build b/hw/intc/meson.build index f55eb1b80b..85174d1af1 100644 --- a/hw/intc/meson.build +++ b/hw/intc/meson.build @@ -76,3 +76,4 @@ specific_ss.add(when: 'CONFIG_LOONGARCH_IPI_KVM', if_true: files('loongarch_ipi_ specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_PIC', if_true: files('loongarch_pch_pic.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_MSI', if_true: files('loongarch_pch_msi.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI', if_true: files('loongarch_extioi.c')) +specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI_KVM', if_true: files('loongarch_extioi_kvm.c')) diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index f8fcac3e7b..99a523171f 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -17,6 +17,7 @@ config LOONGARCH_VIRT select LOONGARCH_PCH_MSI select LOONGARCH_EXTIOI select LOONGARCH_IPI_KVM if KVM + select LOONGARCH_EXTIOI_KVM if KVM select LS7A_RTC select SMBIOS select ACPI_PCI diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 3b28e8e671..8ca7c09016 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -828,28 +828,37 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) } /* Create EXTIOI device */ - extioi = qdev_new(TYPE_LOONGARCH_EXTIOI); - qdev_prop_set_uint32(extioi, "num-cpu", ms->smp.cpus); - if (virt_is_veiointc_enabled(lvms)) { - 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)); - } + if (kvm_enabled() && kvm_irqchip_in_kernel()) { + extioi = qdev_new(TYPE_KVM_LOONGARCH_EXTIOI); + qdev_prop_set_uint32(extioi, "num-cpu", ms->smp.cpus); + if (virt_is_veiointc_enabled(lvms)) { + qdev_prop_set_bit(extioi, "has-virtualization-extension", true); + } + sysbus_realize_and_unref(SYS_BUS_DEVICE(extioi), &error_fatal); + } else { + extioi = qdev_new(TYPE_LOONGARCH_EXTIOI); + qdev_prop_set_uint32(extioi, "num-cpu", ms->smp.cpus); + if (virt_is_veiointc_enabled(lvms)) { + 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)); + } - /* - * connect ext irq to the cpu irq - * cpu_pin[9:2] <= intc_pin[7:0] - */ - for (cpu = 0; cpu < ms->smp.cpus; cpu++) { - cpudev = DEVICE(qemu_get_cpu(cpu)); - for (pin = 0; pin < LS3A_INTC_IP; pin++) { - qdev_connect_gpio_out(extioi, (cpu * 8 + pin), - qdev_get_gpio_in(cpudev, pin + 2)); + /* + * connect ext irq to the cpu irq + * cpu_pin[9:2] <= intc_pin[7:0] + */ + for (cpu = 0; cpu < ms->smp.cpus; cpu++) { + cpudev = DEVICE(qemu_get_cpu(cpu)); + for (pin = 0; pin < LS3A_INTC_IP; pin++) { + qdev_connect_gpio_out(extioi, (cpu * 8 + pin), + qdev_get_gpio_in(cpudev, pin + 2)); + } } } From patchwork Tue Sep 10 12:18:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xianglai Li X-Patchwork-Id: 13798471 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 3D7E2191496 for ; Tue, 10 Sep 2024 12:36:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971789; cv=none; b=ARjCQ4/Jj3521nd5nz1D/K0Qj3M4wCqkT/lPuevgbfLBKKCIDYyLFVmOHMWs1wIJ8RmDzW4jZ/v90YuX6yjvoUJLGxO/4kiJLkSOUbJ01PqO0VNnp/ayYg2y29UwVG356VB1/8ppd+Nyk8akSs+YONyTXpE0uF+ylpCVSFz0GTo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971789; c=relaxed/simple; bh=wx8pYCyMzI7tRxcwtKJMQZIms2/4FMcnTDwLpJwCIBk=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=lEfaOLrSErqVQea7rdwYAnLPIUN23MB7hlui5TZP6SBmEFqGQCn1DjpMYprm77x+wzFjUBfZRV1W8eBw/otbcVzKjZQY8qI486CH3WQAoAIiXM5chdK8TOH5gn5l4vuHTlYdd95GGnhsgOvj9RLQPu/VwheuU+L2LEpY/V/hJUs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8CxB+lIPeBmerkDAA--.7696S3; Tue, 10 Sep 2024 20:36:24 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front2 (Coremail) with SMTP id qciowMBx+cVCPeBmXGoDAA--.15753S6; Tue, 10 Sep 2024 20:36:23 +0800 (CST) From: Xianglai Li To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Song Gao , Jiaxun Yang , Huacai Chen , "Michael S. Tsirkin" , Cornelia Huck , kvm@vger.kernel.org, Bibo Mao Subject: [RFC PATCH V2 4/5] hw/loongarch: Add KVM pch pic device support Date: Tue, 10 Sep 2024 20:18:31 +0800 Message-Id: <86f29d4f56b12f826e8a5817cdb1efbfb6007a08.1725969898.git.lixianglai@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: qciowMBx+cVCPeBmXGoDAA--.15753S6 X-CM-SenderInfo: 5ol0xt5qjotxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Added pch_pic interrupt controller for kvm emulation. The main process is to send the command word for creating an pch_pic device to the kernel, Delivers the pch pic interrupt controller configuration register base address to the kernel. When the VM is saved, the ioctl obtains the pch_pic interrupt controller data in the kernel and saves it. When the VM is recovered, the saved data is sent to the kernel. Signed-off-by: Xianglai Li --- Cc: Paolo Bonzini Cc: Song Gao Cc: Jiaxun Yang Cc: Huacai Chen Cc: "Michael S. Tsirkin" Cc: Cornelia Huck Cc: kvm@vger.kernel.org Cc: Bibo Mao Cc: Xianglai Li hw/intc/Kconfig | 3 + hw/intc/loongarch_pch_pic.c | 40 ++++--- hw/intc/loongarch_pch_pic_kvm.c | 180 ++++++++++++++++++++++++++++++++ hw/intc/meson.build | 1 + hw/loongarch/Kconfig | 1 + hw/loongarch/virt.c | 67 ++++++------ 6 files changed, 249 insertions(+), 43 deletions(-) create mode 100644 hw/intc/loongarch_pch_pic_kvm.c diff --git a/hw/intc/Kconfig b/hw/intc/Kconfig index df9352d41d..1169926eec 100644 --- a/hw/intc/Kconfig +++ b/hw/intc/Kconfig @@ -105,6 +105,9 @@ config LOONGARCH_PCH_PIC bool select UNIMP +config LOONGARCH_PCH_PIC_KVM + bool + config LOONGARCH_PCH_MSI select MSI_NONBROKEN bool diff --git a/hw/intc/loongarch_pch_pic.c b/hw/intc/loongarch_pch_pic.c index 2d5e65abff..13934be7d9 100644 --- a/hw/intc/loongarch_pch_pic.c +++ b/hw/intc/loongarch_pch_pic.c @@ -16,18 +16,27 @@ #include "migration/vmstate.h" #include "trace.h" #include "qapi/error.h" +#include "sysemu/kvm.h" static void pch_pic_update_irq(LoongArchPCHPIC *s, uint64_t mask, int level) { uint64_t val; int irq; + int kvm_irq; if (level) { val = mask & s->intirr & ~s->int_mask; if (val) { irq = ctz64(val); s->intisr |= MAKE_64BIT_MASK(irq, 1); - qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 1); + if (kvm_enabled() && kvm_irqchip_in_kernel()) { + kvm_irq = ( + KVM_LOONGARCH_IRQ_TYPE_IOAPIC << KVM_LOONGARCH_IRQ_TYPE_SHIFT) + | (0 << KVM_LOONGARCH_IRQ_VCPU_SHIFT) | s->htmsi_vector[irq]; + kvm_set_irq(kvm_state, kvm_irq, !!level); + } else { + qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 1); + } } } else { /* @@ -38,7 +47,14 @@ static void pch_pic_update_irq(LoongArchPCHPIC *s, uint64_t mask, int level) if (val) { irq = ctz64(val); s->intisr &= ~MAKE_64BIT_MASK(irq, 1); - qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 0); + if (kvm_enabled() && kvm_irqchip_in_kernel()) { + kvm_irq = ( + KVM_LOONGARCH_IRQ_TYPE_IOAPIC << KVM_LOONGARCH_IRQ_TYPE_SHIFT) + | (0 << KVM_LOONGARCH_IRQ_VCPU_SHIFT) | s->htmsi_vector[irq]; + kvm_set_irq(kvm_state, kvm_irq, !!level); + } else { + qemu_set_irq(s->parent_irq[s->htmsi_vector[irq]], 0); + } } } } @@ -265,18 +281,18 @@ static uint64_t loongarch_pch_pic_readb(void *opaque, hwaddr addr, { LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(opaque); uint64_t val = 0; - uint32_t offset = (addr & 0xfff) + PCH_PIC_ROUTE_ENTRY_OFFSET; + uint32_t offset = (addr & 0xfff) + PCH_PIC_ROUTE_ENTRY_START; int64_t offset_tmp; switch (offset) { - case PCH_PIC_HTMSI_VEC_OFFSET ... PCH_PIC_HTMSI_VEC_END: - offset_tmp = offset - PCH_PIC_HTMSI_VEC_OFFSET; + case PCH_PIC_HTMSI_VEC_START ... PCH_PIC_HTMSI_VEC_END: + offset_tmp = offset - PCH_PIC_HTMSI_VEC_START; if (offset_tmp >= 0 && offset_tmp < 64) { val = s->htmsi_vector[offset_tmp]; } break; - case PCH_PIC_ROUTE_ENTRY_OFFSET ... PCH_PIC_ROUTE_ENTRY_END: - offset_tmp = offset - PCH_PIC_ROUTE_ENTRY_OFFSET; + case PCH_PIC_ROUTE_ENTRY_START ... PCH_PIC_ROUTE_ENTRY_END: + offset_tmp = offset - PCH_PIC_ROUTE_ENTRY_START; if (offset_tmp >= 0 && offset_tmp < 64) { val = s->route_entry[offset_tmp]; } @@ -294,19 +310,19 @@ static void loongarch_pch_pic_writeb(void *opaque, hwaddr addr, { LoongArchPCHPIC *s = LOONGARCH_PCH_PIC(opaque); int32_t offset_tmp; - uint32_t offset = (addr & 0xfff) + PCH_PIC_ROUTE_ENTRY_OFFSET; + uint32_t offset = (addr & 0xfff) + PCH_PIC_ROUTE_ENTRY_START; trace_loongarch_pch_pic_writeb(size, addr, data); switch (offset) { - case PCH_PIC_HTMSI_VEC_OFFSET ... PCH_PIC_HTMSI_VEC_END: - offset_tmp = offset - PCH_PIC_HTMSI_VEC_OFFSET; + case PCH_PIC_HTMSI_VEC_START ... PCH_PIC_HTMSI_VEC_END: + offset_tmp = offset - PCH_PIC_HTMSI_VEC_START; if (offset_tmp >= 0 && offset_tmp < 64) { s->htmsi_vector[offset_tmp] = (uint8_t)(data & 0xff); } break; - case PCH_PIC_ROUTE_ENTRY_OFFSET ... PCH_PIC_ROUTE_ENTRY_END: - offset_tmp = offset - PCH_PIC_ROUTE_ENTRY_OFFSET; + case PCH_PIC_ROUTE_ENTRY_START ... PCH_PIC_ROUTE_ENTRY_END: + offset_tmp = offset - PCH_PIC_ROUTE_ENTRY_START; if (offset_tmp >= 0 && offset_tmp < 64) { s->route_entry[offset_tmp] = (uint8_t)(data & 0xff); } diff --git a/hw/intc/loongarch_pch_pic_kvm.c b/hw/intc/loongarch_pch_pic_kvm.c new file mode 100644 index 0000000000..9b6a2f6784 --- /dev/null +++ b/hw/intc/loongarch_pch_pic_kvm.c @@ -0,0 +1,180 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * LoongArch kvm pch pic interrupt support + * + * Copyright (C) 2024 Loongson Technology Corporation Limited + */ + +#include "qemu/osdep.h" +#include "hw/qdev-properties.h" +#include "qemu/typedefs.h" +#include "hw/intc/loongarch_pch_pic.h" +#include "hw/sysbus.h" +#include "linux/kvm.h" +#include "migration/vmstate.h" +#include "qapi/error.h" +#include "sysemu/kvm.h" +#include "hw/loongarch/virt.h" +#include "hw/pci-host/ls7a.h" +#include "qemu/error-report.h" + +static void kvm_pch_pic_access_regs(int fd, uint64_t addr, + void *val, bool is_write) +{ + kvm_device_access(fd, KVM_DEV_LOONGARCH_PCH_PIC_GRP_REGS, + addr, val, is_write, &error_abort); +} + +static void kvm_loongarch_pch_pic_save_load(void *opaque, bool is_write) +{ + KVMLoongArchPCHPIC *s = (KVMLoongArchPCHPIC *)opaque; + KVMLoongArchPCHPICClass *class = KVM_LOONGARCH_PCH_PIC_GET_CLASS(s); + int fd = class->dev_fd; + int addr, offset; + + kvm_pch_pic_access_regs(fd, PCH_PIC_MASK_START, + (void *)&s->int_mask, is_write); + kvm_pch_pic_access_regs(fd, PCH_PIC_HTMSI_EN_START, + (void *)&s->htmsi_en, is_write); + kvm_pch_pic_access_regs(fd, PCH_PIC_EDGE_START, + (void *)&s->intedge, is_write); + kvm_pch_pic_access_regs(fd, PCH_PIC_AUTO_CTRL0_START, + (void *)&s->auto_crtl0, is_write); + kvm_pch_pic_access_regs(fd, PCH_PIC_AUTO_CTRL1_START, + (void *)&s->auto_crtl1, is_write); + + for (addr = PCH_PIC_ROUTE_ENTRY_START; + addr < PCH_PIC_ROUTE_ENTRY_END; addr++) { + offset = addr - PCH_PIC_ROUTE_ENTRY_START; + kvm_pch_pic_access_regs(fd, addr, + (void *)&s->route_entry[offset], is_write); + } + + for (addr = PCH_PIC_HTMSI_VEC_START; addr < PCH_PIC_HTMSI_VEC_END; addr++) { + offset = addr - PCH_PIC_HTMSI_VEC_START; + kvm_pch_pic_access_regs(fd, addr, + (void *)&s->htmsi_vector[offset], is_write); + } + + kvm_pch_pic_access_regs(fd, PCH_PIC_INT_IRR_START, + (void *)&s->intirr, is_write); + kvm_pch_pic_access_regs(fd, PCH_PIC_INT_ISR_START, + (void *)&s->intisr, is_write); + kvm_pch_pic_access_regs(fd, PCH_PIC_POLARITY_START, + (void *)&s->int_polarity, is_write); +} + +static int kvm_loongarch_pch_pic_pre_save(void *opaque) +{ + kvm_loongarch_pch_pic_save_load(opaque, false); + return 0; +} + +static int kvm_loongarch_pch_pic_post_load(void *opaque, int version_id) +{ + kvm_loongarch_pch_pic_save_load(opaque, true); + return 0; +} + +static void kvm_pch_pic_handler(void *opaque, int irq, int level) +{ + int kvm_irq; + + if (kvm_enabled()) { + kvm_irq = \ + (KVM_LOONGARCH_IRQ_TYPE_IOAPIC << KVM_LOONGARCH_IRQ_TYPE_SHIFT) + | (0 << KVM_LOONGARCH_IRQ_VCPU_SHIFT) | irq; + kvm_set_irq(kvm_state, kvm_irq, !!level); + } +} + +static void kvm_loongarch_pch_pic_realize(DeviceState *dev, Error **errp) +{ + KVMLoongArchPCHPICClass *pch_pic_class = + KVM_LOONGARCH_PCH_PIC_GET_CLASS(dev); + struct kvm_create_device cd = {0}; + uint64_t pch_pic_base = VIRT_PCH_REG_BASE; + Error *err = NULL; + int ret; + + pch_pic_class->parent_realize(dev, &err); + if (err) { + error_propagate(errp, err); + return; + } + + if (!pch_pic_class->is_created) { + cd.type = KVM_DEV_TYPE_LOONGARCH_PCH_PIC; + ret = kvm_vm_ioctl(kvm_state, KVM_CREATE_DEVICE, &cd); + if (ret < 0) { + error_setg_errno(errp, errno, + "Creating the KVM pch pic device failed"); + return; + } + pch_pic_class->is_created = true; + pch_pic_class->dev_fd = cd.fd; + fprintf(stdout, "Create LoongArch pch pic irqchip in KVM done!\n"); + + ret = kvm_device_access(cd.fd, KVM_DEV_LOONGARCH_PCH_PIC_GRP_CTRL, + KVM_DEV_LOONGARCH_PCH_PIC_CTRL_INIT, + &pch_pic_base, true, NULL); + if (ret < 0) { + error_report( + "KVM PCH_PIC: failed to set the base address of PCH PIC"); + exit(1); + } + + qdev_init_gpio_in(dev, kvm_pch_pic_handler, VIRT_PCH_PIC_IRQ_NUM); + } +} + +static const VMStateDescription vmstate_kvm_loongarch_pch_pic = { + .name = TYPE_LOONGARCH_PCH_PIC, + .version_id = 1, + .minimum_version_id = 1, + .pre_save = kvm_loongarch_pch_pic_pre_save, + .post_load = kvm_loongarch_pch_pic_post_load, + .fields = (const VMStateField[]) { + VMSTATE_UINT64(int_mask, KVMLoongArchPCHPIC), + VMSTATE_UINT64(htmsi_en, KVMLoongArchPCHPIC), + VMSTATE_UINT64(intedge, KVMLoongArchPCHPIC), + VMSTATE_UINT64(intclr, KVMLoongArchPCHPIC), + VMSTATE_UINT64(auto_crtl0, KVMLoongArchPCHPIC), + VMSTATE_UINT64(auto_crtl1, KVMLoongArchPCHPIC), + VMSTATE_UINT8_ARRAY(route_entry, KVMLoongArchPCHPIC, 64), + VMSTATE_UINT8_ARRAY(htmsi_vector, KVMLoongArchPCHPIC, 64), + VMSTATE_UINT64(last_intirr, KVMLoongArchPCHPIC), + VMSTATE_UINT64(intirr, KVMLoongArchPCHPIC), + VMSTATE_UINT64(intisr, KVMLoongArchPCHPIC), + VMSTATE_UINT64(int_polarity, KVMLoongArchPCHPIC), + VMSTATE_END_OF_LIST() + } +}; + + +static void kvm_loongarch_pch_pic_class_init(ObjectClass *oc, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(oc); + KVMLoongArchPCHPICClass *pch_pic_class = KVM_LOONGARCH_PCH_PIC_CLASS(oc); + + pch_pic_class->parent_realize = dc->realize; + dc->realize = kvm_loongarch_pch_pic_realize; + pch_pic_class->is_created = false; + dc->vmsd = &vmstate_kvm_loongarch_pch_pic; + +} + +static const TypeInfo kvm_loongarch_pch_pic_info = { + .name = TYPE_KVM_LOONGARCH_PCH_PIC, + .parent = TYPE_SYS_BUS_DEVICE, + .instance_size = sizeof(KVMLoongArchPCHPIC), + .class_size = sizeof(KVMLoongArchPCHPICClass), + .class_init = kvm_loongarch_pch_pic_class_init, +}; + +static void kvm_loongarch_pch_pic_register_types(void) +{ + type_register_static(&kvm_loongarch_pch_pic_info); +} + +type_init(kvm_loongarch_pch_pic_register_types) diff --git a/hw/intc/meson.build b/hw/intc/meson.build index 85174d1af1..c20c0a2c05 100644 --- a/hw/intc/meson.build +++ b/hw/intc/meson.build @@ -77,3 +77,4 @@ specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_PIC', if_true: files('loongarch_pch_ specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_MSI', if_true: files('loongarch_pch_msi.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI', if_true: files('loongarch_extioi.c')) specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI_KVM', if_true: files('loongarch_extioi_kvm.c')) +specific_ss.add(when: 'CONFIG_LOONGARCH_PCH_PIC_KVM', if_true: files('loongarch_pch_pic_kvm.c')) diff --git a/hw/loongarch/Kconfig b/hw/loongarch/Kconfig index 99a523171f..f909f799ad 100644 --- a/hw/loongarch/Kconfig +++ b/hw/loongarch/Kconfig @@ -17,6 +17,7 @@ config LOONGARCH_VIRT select LOONGARCH_PCH_MSI select LOONGARCH_EXTIOI select LOONGARCH_IPI_KVM if KVM + select LOONGARCH_PCH_PIC_KVM if KVM select LOONGARCH_EXTIOI_KVM if KVM select LS7A_RTC select SMBIOS diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index 8ca7c09016..db0c08899b 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -865,40 +865,45 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) /* Add Extend I/O Interrupt Controller node */ fdt_add_eiointc_node(lvms, &cpuintc_phandle, &eiointc_phandle); - pch_pic = qdev_new(TYPE_LOONGARCH_PCH_PIC); - num = VIRT_PCH_PIC_IRQ_NUM; - qdev_prop_set_uint32(pch_pic, "pch_pic_irq_num", num); - d = 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)); - memory_region_add_subregion(get_system_memory(), - VIRT_IOAPIC_REG_BASE + PCH_PIC_ROUTE_ENTRY_OFFSET, + if (kvm_enabled() && kvm_irqchip_in_kernel()) { + pch_pic = qdev_new(TYPE_KVM_LOONGARCH_PCH_PIC); + sysbus_realize_and_unref(SYS_BUS_DEVICE(pch_pic), &error_fatal); + } else { + pch_pic = qdev_new(TYPE_LOONGARCH_PCH_PIC); + num = VIRT_PCH_PIC_IRQ_NUM; + qdev_prop_set_uint32(pch_pic, "pch_pic_irq_num", num); + d = 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)); + memory_region_add_subregion(get_system_memory(), + VIRT_IOAPIC_REG_BASE + PCH_PIC_ROUTE_ENTRY_START, sysbus_mmio_get_region(d, 1)); - memory_region_add_subregion(get_system_memory(), - VIRT_IOAPIC_REG_BASE + PCH_PIC_INT_STATUS_LO, - sysbus_mmio_get_region(d, 2)); - - /* Connect pch_pic irqs to extioi */ - for (i = 0; i < num; i++) { - qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i)); - } + memory_region_add_subregion(get_system_memory(), + VIRT_IOAPIC_REG_BASE + PCH_PIC_INT_STATUS_LO, + sysbus_mmio_get_region(d, 2)); - /* Add PCH PIC node */ - fdt_add_pch_pic_node(lvms, &eiointc_phandle, &pch_pic_phandle); + /* Connect pch_pic irqs to extioi */ + for (i = 0; i < num; i++) { + qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i)); + } - pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI); - start = num; - num = EXTIOI_IRQS - start; - qdev_prop_set_uint32(pch_msi, "msi_irq_base", start); - qdev_prop_set_uint32(pch_msi, "msi_irq_num", num); - d = SYS_BUS_DEVICE(pch_msi); - sysbus_realize_and_unref(d, &error_fatal); - sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW); - for (i = 0; i < num; i++) { - /* Connect pch_msi irqs to extioi */ - qdev_connect_gpio_out(DEVICE(d), i, - qdev_get_gpio_in(extioi, i + start)); + /* Add PCH PIC node */ + fdt_add_pch_pic_node(lvms, &eiointc_phandle, &pch_pic_phandle); + + pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI); + start = num; + num = EXTIOI_IRQS - start; + qdev_prop_set_uint32(pch_msi, "msi_irq_base", start); + qdev_prop_set_uint32(pch_msi, "msi_irq_num", num); + d = SYS_BUS_DEVICE(pch_msi); + sysbus_realize_and_unref(d, &error_fatal); + sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW); + for (i = 0; i < num; i++) { + /* Connect pch_msi irqs to extioi */ + qdev_connect_gpio_out(DEVICE(d), i, + qdev_get_gpio_in(extioi, i + start)); + } } /* Add PCH MSI node */ From patchwork Tue Sep 10 12:18:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xianglai Li X-Patchwork-Id: 13798470 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by smtp.subspace.kernel.org (Postfix) with ESMTP id C309E1917F6 for ; Tue, 10 Sep 2024 12:36:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=114.242.206.163 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971788; cv=none; b=iyOJUKs5b8MFNCJHx6Ibp5DrSUOpmU4C60dsduDwEihmPauWyR9IvkqIc0wBvs6O/WGiCEtG/XvTV5fh9jrzJYLOTkxCZFPSRyFDPT61cRvo/DD9fBd2n9rl72kOETqNLkn0qknGdJEni6hWzoysMbLGxfnWFFiu6xOdrnNLG+o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725971788; c=relaxed/simple; bh=jEHWujaR/6Id0Mda1zToipvSoWwHbCg0aMS0Lf5OJqs=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=PQFoZbD577d1WXvwStRfDg42PTZSjVdbmGMoeraSNU53TAAbldh38j9QpGror9AbclUJnZY55AvgSaECYiZdbzA7QKBZnH+DuokN4QON0eUJz9auaon4wA83pfuL4eh0pfLRIIJ8H2NPGT1OKaV5vYPvGJ73a6LxDfNeU1p9wxw= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn; spf=pass smtp.mailfrom=loongson.cn; arc=none smtp.client-ip=114.242.206.163 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=loongson.cn Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=loongson.cn Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxrupJPeBmf7kDAA--.9334S3; Tue, 10 Sep 2024 20:36:25 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by front2 (Coremail) with SMTP id qciowMBx+cVCPeBmXGoDAA--.15753S7; Tue, 10 Sep 2024 20:36:24 +0800 (CST) From: Xianglai Li To: qemu-devel@nongnu.org Cc: Paolo Bonzini , Song Gao , Jiaxun Yang , Huacai Chen , "Michael S. Tsirkin" , Cornelia Huck , kvm@vger.kernel.org, Bibo Mao Subject: [RFC PATCH V2 5/5] hw/loongarch: Add KVM pch msi device support Date: Tue, 10 Sep 2024 20:18:32 +0800 Message-Id: <8c81313bd4a5c53db5c889f19c9415994a9e007d.1725969898.git.lixianglai@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: References: Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: qciowMBx+cVCPeBmXGoDAA--.15753S7 X-CM-SenderInfo: 5ol0xt5qjotxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Added pch_msi interrupt controller handling during kernel emulation of irq chip. Signed-off-by: Xianglai Li --- Cc: Paolo Bonzini Cc: Song Gao Cc: Jiaxun Yang Cc: Huacai Chen Cc: "Michael S. Tsirkin" Cc: Cornelia Huck Cc: kvm@vger.kernel.org Cc: Bibo Mao Cc: Xianglai Li hw/intc/loongarch_pch_msi.c | 42 +++++++++++++++++++++++++++---------- hw/loongarch/virt.c | 26 +++++++++++++---------- target/loongarch/kvm/kvm.c | 1 - 3 files changed, 46 insertions(+), 23 deletions(-) diff --git a/hw/intc/loongarch_pch_msi.c b/hw/intc/loongarch_pch_msi.c index ecf3ed0267..bab6f852f8 100644 --- a/hw/intc/loongarch_pch_msi.c +++ b/hw/intc/loongarch_pch_msi.c @@ -2,7 +2,7 @@ /* * QEMU Loongson 7A1000 msi interrupt controller. * - * Copyright (C) 2021 Loongson Technology Corporation Limited + * Copyright (C) 2024 Loongson Technology Corporation Limited */ #include "qemu/osdep.h" @@ -14,6 +14,8 @@ #include "hw/misc/unimp.h" #include "migration/vmstate.h" #include "trace.h" +#include "sysemu/kvm.h" +#include "hw/loongarch/virt.h" static uint64_t loongarch_msi_mem_read(void *opaque, hwaddr addr, unsigned size) { @@ -26,14 +28,24 @@ static void loongarch_msi_mem_write(void *opaque, hwaddr addr, LoongArchPCHMSI *s = (LoongArchPCHMSI *)opaque; int irq_num; - /* - * vector number is irq number from upper extioi intc - * need subtract irq base to get msi vector offset - */ - irq_num = (val & 0xff) - s->irq_base; - trace_loongarch_msi_set_irq(irq_num); - assert(irq_num < s->irq_num); - qemu_set_irq(s->pch_msi_irq[irq_num], 1); + MSIMessage msg = { + .address = addr, + .data = val, + }; + + if (kvm_enabled() && kvm_irqchip_in_kernel()) { + kvm_irqchip_send_msi(kvm_state, msg); + } else { + /* + * vector number is irq number from upper extioi intc + * need subtract irq base to get msi vector offset + */ + irq_num = (val & 0xff) - s->irq_base; + trace_loongarch_msi_set_irq(irq_num); + assert(irq_num < s->irq_num); + + qemu_set_irq(s->pch_msi_irq[irq_num], 1); + } } static const MemoryRegionOps loongarch_pch_msi_ops = { @@ -45,8 +57,16 @@ static const MemoryRegionOps loongarch_pch_msi_ops = { static void pch_msi_irq_handler(void *opaque, int irq, int level) { LoongArchPCHMSI *s = LOONGARCH_PCH_MSI(opaque); - - qemu_set_irq(s->pch_msi_irq[irq], level); + MSIMessage msg = { + .address = 0, + .data = irq, + }; + + if (kvm_enabled() && kvm_irqchip_in_kernel()) { + kvm_irqchip_send_msi(kvm_state, msg); + } else { + qemu_set_irq(s->pch_msi_irq[irq], level); + } } static void loongarch_pch_msi_realize(DeviceState *dev, Error **errp) diff --git a/hw/loongarch/virt.c b/hw/loongarch/virt.c index db0c08899b..b42cf7e5af 100644 --- a/hw/loongarch/virt.c +++ b/hw/loongarch/virt.c @@ -887,24 +887,28 @@ static void virt_irq_init(LoongArchVirtMachineState *lvms) for (i = 0; i < num; i++) { qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i)); } + } - /* Add PCH PIC node */ - fdt_add_pch_pic_node(lvms, &eiointc_phandle, &pch_pic_phandle); + /* Add PCH PIC node */ + fdt_add_pch_pic_node(lvms, &eiointc_phandle, &pch_pic_phandle); - pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI); - start = num; - num = EXTIOI_IRQS - start; - qdev_prop_set_uint32(pch_msi, "msi_irq_base", start); - qdev_prop_set_uint32(pch_msi, "msi_irq_num", num); - d = SYS_BUS_DEVICE(pch_msi); - sysbus_realize_and_unref(d, &error_fatal); - sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW); + pch_msi = qdev_new(TYPE_LOONGARCH_PCH_MSI); + num = VIRT_PCH_PIC_IRQ_NUM; + start = num; + num = EXTIOI_IRQS - start; + qdev_prop_set_uint32(pch_msi, "msi_irq_base", start); + qdev_prop_set_uint32(pch_msi, "msi_irq_num", num); + d = SYS_BUS_DEVICE(pch_msi); + sysbus_realize_and_unref(d, &error_fatal); + + if (!(kvm_enabled() && kvm_irqchip_in_kernel())) { + /* Connect pch_msi irqs to extioi */ for (i = 0; i < num; i++) { - /* Connect pch_msi irqs to extioi */ qdev_connect_gpio_out(DEVICE(d), i, qdev_get_gpio_in(extioi, i + start)); } } + sysbus_mmio_map(d, 0, VIRT_PCH_MSI_ADDR_LOW); /* Add PCH MSI node */ fdt_add_pch_msi_node(lvms, &eiointc_phandle, &pch_msi_phandle); diff --git a/target/loongarch/kvm/kvm.c b/target/loongarch/kvm/kvm.c index c07dcfd85f..e1be6a6959 100644 --- a/target/loongarch/kvm/kvm.c +++ b/target/loongarch/kvm/kvm.c @@ -719,7 +719,6 @@ int kvm_arch_get_default_type(MachineState *ms) int kvm_arch_init(MachineState *ms, KVMState *s) { - s->kernel_irqchip_allowed = false; cap_has_mp_state = kvm_check_extension(s, KVM_CAP_MP_STATE); return 0; }