From patchwork Mon Oct 9 09:01:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Xianglai Li X-Patchwork-Id: 13413137 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B529AE95A96 for ; Mon, 9 Oct 2023 09:02:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345636AbjJIJCX (ORCPT ); Mon, 9 Oct 2023 05:02:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48752 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1345612AbjJIJCT (ORCPT ); Mon, 9 Oct 2023 05:02:19 -0400 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 643BDCF for ; Mon, 9 Oct 2023 02:02:16 -0700 (PDT) Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8DxRvGVwSNlkj0wAA--.27115S3; Mon, 09 Oct 2023 17:02:13 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8Dx_y+TwSNlDW4cAA--.59991S3; Mon, 09 Oct 2023 17:02:12 +0800 (CST) From: xianglai li To: qemu-devel@nongnu.org, kvm@vger.kernel.org Cc: Tianrui Zhao , "Michael S. Tsirkin" , Cornelia Huck , Paolo Bonzini , =?utf-8?q?Marc-Andr=C3=A9_Lureau?= , =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= , Thomas Huth , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Richard Henderson , Peter Maydell , Bibo Mao , Song Gao , Xiaojuan Yang Subject: [PATCH RFC v4 1/9] linux-headers: Add KVM headers for loongarch Date: Mon, 9 Oct 2023 17:01:29 +0800 Message-Id: X-Mailer: git-send-email 2.39.1 In-Reply-To: References: MIME-Version: 1.0 X-CM-TRANSID: AQAAf8Dx_y+TwSNlDW4cAA--.59991S3 X-CM-SenderInfo: 5ol0xt5qjotxo6or00hjvr0hdfq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Tianrui Zhao This patch is only a placeholder now, which is used to show some kvm structures and macros for reviewers. And it will be replaced by using update-linux-headers.sh when the linux loongarch kvm patches are accepted. Cc: "Michael S. Tsirkin" Cc: Cornelia Huck Cc: Paolo Bonzini Cc: "Marc-André Lureau" Cc: "Daniel P. Berrangé" Cc: Thomas Huth Cc: "Philippe Mathieu-Daudé" Cc: Richard Henderson Cc: Peter Maydell Cc: Bibo Mao Cc: Song Gao Cc: Xiaojuan Yang Cc: Tianrui Zhao Signed-off-by: Tianrui Zhao Signed-off-by: xianglai li --- linux-headers/asm-loongarch/kvm.h | 100 ++++++++++++++++++++++++++++++ linux-headers/linux/kvm.h | 9 +++ 2 files changed, 109 insertions(+) create mode 100644 linux-headers/asm-loongarch/kvm.h diff --git a/linux-headers/asm-loongarch/kvm.h b/linux-headers/asm-loongarch/kvm.h new file mode 100644 index 0000000000..5e72b83372 --- /dev/null +++ b/linux-headers/asm-loongarch/kvm.h @@ -0,0 +1,100 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * Copyright (C) 2023 Loongson Technology Corporation Limited + */ + +#ifndef __UAPI_ASM_LOONGARCH_KVM_H +#define __UAPI_ASM_LOONGARCH_KVM_H + +#include + +/* + * KVM Loongarch specific structures and definitions. + */ + +#define __KVM_HAVE_READONLY_MEM + +#define KVM_COALESCED_MMIO_PAGE_OFFSET 1 + +/* + * for KVM_GET_REGS and KVM_SET_REGS + */ +struct kvm_regs { + /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */ + __u64 gpr[32]; + __u64 pc; +}; + +/* + * for KVM_GET_FPU and KVM_SET_FPU + */ +struct kvm_fpu { + __u32 fcsr; + __u32 none; + __u64 fcc; /* 8x8 */ + struct kvm_fpureg { + __u64 val64[4]; + } fpr[32]; +}; + +/* + * For LoongArch, we use KVM_SET_ONE_REG and KVM_GET_ONE_REG to access various + * registers. The id field is broken down as follows: + * + * bits[63..52] - As per linux/kvm.h + * bits[51..32] - Must be zero. + * bits[31..16] - Register set. + * + * Register set = 0: GP registers from kvm_regs (see definitions below). + * + * Register set = 1: CSR registers. + * + * Register set = 2: KVM specific registers (see definitions below). + * + * Register set = 3: FPU / SIMD registers (see definitions below). + * + * Other sets registers may be added in the future. Each set would + * have its own identifier in bits[31..16]. + */ + +#define KVM_REG_LOONGARCH_GP (KVM_REG_LOONGARCH | 0x00000ULL) +#define KVM_REG_LOONGARCH_CSR (KVM_REG_LOONGARCH | 0x10000ULL) +#define KVM_REG_LOONGARCH_KVM (KVM_REG_LOONGARCH | 0x20000ULL) +#define KVM_REG_LOONGARCH_FPU (KVM_REG_LOONGARCH | 0x30000ULL) +#define KVM_REG_LOONGARCH_CPUCFG (KVM_REG_LOONGARCH | 0x40000ULL) +#define KVM_REG_LOONGARCH_MASK (KVM_REG_LOONGARCH | 0x70000ULL) +#define KVM_CSR_IDX_MASK 0x7fff +#define KVM_CPUCFG_IDX_MASK 0x7fff + +/* + * KVM_REG_LOONGARCH_KVM - KVM specific control registers. + */ + +#define KVM_REG_LOONGARCH_COUNTER (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 3) +#define KVM_REG_LOONGARCH_VCPU_RESET (KVM_REG_LOONGARCH_KVM | KVM_REG_SIZE_U64 | 4) + +#define LOONGARCH_REG_SHIFT 3 +#define LOONGARCH_REG_64(TYPE, REG) (TYPE | KVM_REG_SIZE_U64 | (REG << LOONGARCH_REG_SHIFT)) +#define KVM_IOC_CSRID(REG) LOONGARCH_REG_64(KVM_REG_LOONGARCH_CSR, REG) +#define KVM_IOC_CPUCFG(REG) LOONGARCH_REG_64(KVM_REG_LOONGARCH_CPUCFG, REG) + +struct kvm_debug_exit_arch { +}; + +/* for KVM_SET_GUEST_DEBUG */ +struct kvm_guest_debug_arch { +}; + +/* definition of registers in kvm_run */ +struct kvm_sync_regs { +}; + +/* dummy definition */ +struct kvm_sregs { +}; + +#define KVM_NR_IRQCHIPS 1 +#define KVM_IRQCHIP_NUM_PINS 64 +#define KVM_MAX_CORES 256 + +#endif /* __UAPI_ASM_LOONGARCH_KVM_H */ diff --git a/linux-headers/linux/kvm.h b/linux-headers/linux/kvm.h index 0d74ee999a..0e378bbcbf 100644 --- a/linux-headers/linux/kvm.h +++ b/linux-headers/linux/kvm.h @@ -264,6 +264,7 @@ struct kvm_xen_exit { #define KVM_EXIT_RISCV_SBI 35 #define KVM_EXIT_RISCV_CSR 36 #define KVM_EXIT_NOTIFY 37 +#define KVM_EXIT_LOONGARCH_IOCSR 38 /* For KVM_EXIT_INTERNAL_ERROR */ /* Emulate instruction failed. */ @@ -336,6 +337,13 @@ struct kvm_run { __u32 len; __u8 is_write; } mmio; + /* KVM_EXIT_LOONGARCH_IOCSR */ + struct { + __u64 phys_addr; + __u8 data[8]; + __u32 len; + __u8 is_write; + } iocsr_io; /* KVM_EXIT_HYPERCALL */ struct { __u64 nr; @@ -1358,6 +1366,7 @@ struct kvm_dirty_tlb { #define KVM_REG_ARM64 0x6000000000000000ULL #define KVM_REG_MIPS 0x7000000000000000ULL #define KVM_REG_RISCV 0x8000000000000000ULL +#define KVM_REG_LOONGARCH 0x9000000000000000ULL #define KVM_REG_SIZE_SHIFT 52 #define KVM_REG_SIZE_MASK 0x00f0000000000000ULL