| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
| /* |
| * Copyright (C) 2019 Western Digital Corporation or its affiliates. |
| * |
| * Authors: |
| * Anup Patel <anup.patel@wdc.com> |
| */ |
| |
| #ifndef __LINUX_KVM_RISCV_H |
| #define __LINUX_KVM_RISCV_H |
| |
| #ifndef __ASSEMBLY__ |
| |
| #include <linux/types.h> |
| #include <asm/bitsperlong.h> |
| #include <asm/ptrace.h> |
| |
| #define __KVM_HAVE_IRQ_LINE |
| |
| #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 |
| |
| #define KVM_INTERRUPT_SET -1U |
| #define KVM_INTERRUPT_UNSET -2U |
| |
| /* for KVM_GET_REGS and KVM_SET_REGS */ |
| struct kvm_regs { |
| }; |
| |
| /* for KVM_GET_FPU and KVM_SET_FPU */ |
| struct kvm_fpu { |
| }; |
| |
| /* KVM Debug exit structure */ |
| 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 { |
| }; |
| |
| /* for KVM_GET_SREGS and KVM_SET_SREGS */ |
| struct kvm_sregs { |
| }; |
| |
| /* CONFIG registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ |
| struct kvm_riscv_config { |
| unsigned long isa; |
| unsigned long zicbom_block_size; |
| unsigned long mvendorid; |
| unsigned long marchid; |
| unsigned long mimpid; |
| unsigned long zicboz_block_size; |
| unsigned long satp_mode; |
| }; |
| |
| /* CORE registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ |
| struct kvm_riscv_core { |
| struct user_regs_struct regs; |
| unsigned long mode; |
| }; |
| |
| /* Possible privilege modes for kvm_riscv_core */ |
| #define KVM_RISCV_MODE_S 1 |
| #define KVM_RISCV_MODE_U 0 |
| |
| /* General CSR registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ |
| struct kvm_riscv_csr { |
| unsigned long sstatus; |
| unsigned long sie; |
| unsigned long stvec; |
| unsigned long sscratch; |
| unsigned long sepc; |
| unsigned long scause; |
| unsigned long stval; |
| unsigned long sip; |
| unsigned long satp; |
| unsigned long scounteren; |
| unsigned long senvcfg; |
| }; |
| |
| /* AIA CSR registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ |
| struct kvm_riscv_aia_csr { |
| unsigned long siselect; |
| unsigned long iprio1; |
| unsigned long iprio2; |
| unsigned long sieh; |
| unsigned long siph; |
| unsigned long iprio1h; |
| unsigned long iprio2h; |
| }; |
| |
| /* Smstateen CSR for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ |
| struct kvm_riscv_smstateen_csr { |
| unsigned long sstateen0; |
| }; |
| |
| /* TIMER registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ |
| struct kvm_riscv_timer { |
| __u64 frequency; |
| __u64 time; |
| __u64 compare; |
| __u64 state; |
| }; |
| |
| /* |
| * ISA extension IDs specific to KVM. This is not the same as the host ISA |
| * extension IDs as that is internal to the host and should not be exposed |
| * to the guest. This should always be contiguous to keep the mapping simple |
| * in KVM implementation. |
| */ |
| enum KVM_RISCV_ISA_EXT_ID { |
| KVM_RISCV_ISA_EXT_A = 0, |
| KVM_RISCV_ISA_EXT_C, |
| KVM_RISCV_ISA_EXT_D, |
| KVM_RISCV_ISA_EXT_F, |
| KVM_RISCV_ISA_EXT_H, |
| KVM_RISCV_ISA_EXT_I, |
| KVM_RISCV_ISA_EXT_M, |
| KVM_RISCV_ISA_EXT_SVPBMT, |
| KVM_RISCV_ISA_EXT_SSTC, |
| KVM_RISCV_ISA_EXT_SVINVAL, |
| KVM_RISCV_ISA_EXT_ZIHINTPAUSE, |
| KVM_RISCV_ISA_EXT_ZICBOM, |
| KVM_RISCV_ISA_EXT_ZICBOZ, |
| KVM_RISCV_ISA_EXT_ZBB, |
| KVM_RISCV_ISA_EXT_SSAIA, |
| KVM_RISCV_ISA_EXT_V, |
| KVM_RISCV_ISA_EXT_SVNAPOT, |
| KVM_RISCV_ISA_EXT_ZBA, |
| KVM_RISCV_ISA_EXT_ZBS, |
| KVM_RISCV_ISA_EXT_ZICNTR, |
| KVM_RISCV_ISA_EXT_ZICSR, |
| KVM_RISCV_ISA_EXT_ZIFENCEI, |
| KVM_RISCV_ISA_EXT_ZIHPM, |
| KVM_RISCV_ISA_EXT_SMSTATEEN, |
| KVM_RISCV_ISA_EXT_ZICOND, |
| KVM_RISCV_ISA_EXT_ZBC, |
| KVM_RISCV_ISA_EXT_ZBKB, |
| KVM_RISCV_ISA_EXT_ZBKC, |
| KVM_RISCV_ISA_EXT_ZBKX, |
| KVM_RISCV_ISA_EXT_ZKND, |
| KVM_RISCV_ISA_EXT_ZKNE, |
| KVM_RISCV_ISA_EXT_ZKNH, |
| KVM_RISCV_ISA_EXT_ZKR, |
| KVM_RISCV_ISA_EXT_ZKSED, |
| KVM_RISCV_ISA_EXT_ZKSH, |
| KVM_RISCV_ISA_EXT_ZKT, |
| KVM_RISCV_ISA_EXT_ZVBB, |
| KVM_RISCV_ISA_EXT_ZVBC, |
| KVM_RISCV_ISA_EXT_ZVKB, |
| KVM_RISCV_ISA_EXT_ZVKG, |
| KVM_RISCV_ISA_EXT_ZVKNED, |
| KVM_RISCV_ISA_EXT_ZVKNHA, |
| KVM_RISCV_ISA_EXT_ZVKNHB, |
| KVM_RISCV_ISA_EXT_ZVKSED, |
| KVM_RISCV_ISA_EXT_ZVKSH, |
| KVM_RISCV_ISA_EXT_ZVKT, |
| KVM_RISCV_ISA_EXT_ZFH, |
| KVM_RISCV_ISA_EXT_ZFHMIN, |
| KVM_RISCV_ISA_EXT_ZIHINTNTL, |
| KVM_RISCV_ISA_EXT_ZVFH, |
| KVM_RISCV_ISA_EXT_ZVFHMIN, |
| KVM_RISCV_ISA_EXT_ZFA, |
| KVM_RISCV_ISA_EXT_ZTSO, |
| KVM_RISCV_ISA_EXT_ZACAS, |
| KVM_RISCV_ISA_EXT_SSCOFPMF, |
| KVM_RISCV_ISA_EXT_MAX, |
| }; |
| |
| /* |
| * SBI extension IDs specific to KVM. This is not the same as the SBI |
| * extension IDs defined by the RISC-V SBI specification. |
| */ |
| enum KVM_RISCV_SBI_EXT_ID { |
| KVM_RISCV_SBI_EXT_V01 = 0, |
| KVM_RISCV_SBI_EXT_TIME, |
| KVM_RISCV_SBI_EXT_IPI, |
| KVM_RISCV_SBI_EXT_RFENCE, |
| KVM_RISCV_SBI_EXT_SRST, |
| KVM_RISCV_SBI_EXT_HSM, |
| KVM_RISCV_SBI_EXT_PMU, |
| KVM_RISCV_SBI_EXT_EXPERIMENTAL, |
| KVM_RISCV_SBI_EXT_VENDOR, |
| KVM_RISCV_SBI_EXT_DBCN, |
| KVM_RISCV_SBI_EXT_STA, |
| KVM_RISCV_SBI_EXT_MAX, |
| }; |
| |
| /* SBI STA extension registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */ |
| struct kvm_riscv_sbi_sta { |
| unsigned long shmem_lo; |
| unsigned long shmem_hi; |
| }; |
| |
| /* Possible states for kvm_riscv_timer */ |
| #define KVM_RISCV_TIMER_STATE_OFF 0 |
| #define KVM_RISCV_TIMER_STATE_ON 1 |
| |
| #define KVM_REG_SIZE(id) \ |
| (1U << (((id) & KVM_REG_SIZE_MASK) >> KVM_REG_SIZE_SHIFT)) |
| |
| /* If you need to interpret the index values, here is the key: */ |
| #define KVM_REG_RISCV_TYPE_MASK 0x00000000FF000000 |
| #define KVM_REG_RISCV_TYPE_SHIFT 24 |
| #define KVM_REG_RISCV_SUBTYPE_MASK 0x0000000000FF0000 |
| #define KVM_REG_RISCV_SUBTYPE_SHIFT 16 |
| |
| /* Config registers are mapped as type 1 */ |
| #define KVM_REG_RISCV_CONFIG (0x01 << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_CONFIG_REG(name) \ |
| (offsetof(struct kvm_riscv_config, name) / sizeof(unsigned long)) |
| |
| /* Core registers are mapped as type 2 */ |
| #define KVM_REG_RISCV_CORE (0x02 << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_CORE_REG(name) \ |
| (offsetof(struct kvm_riscv_core, name) / sizeof(unsigned long)) |
| |
| /* Control and status registers are mapped as type 3 */ |
| #define KVM_REG_RISCV_CSR (0x03 << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_CSR_GENERAL (0x0 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_CSR_AIA (0x1 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_CSR_SMSTATEEN (0x2 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_CSR_REG(name) \ |
| (offsetof(struct kvm_riscv_csr, name) / sizeof(unsigned long)) |
| #define KVM_REG_RISCV_CSR_AIA_REG(name) \ |
| (offsetof(struct kvm_riscv_aia_csr, name) / sizeof(unsigned long)) |
| #define KVM_REG_RISCV_CSR_SMSTATEEN_REG(name) \ |
| (offsetof(struct kvm_riscv_smstateen_csr, name) / sizeof(unsigned long)) |
| |
| /* Timer registers are mapped as type 4 */ |
| #define KVM_REG_RISCV_TIMER (0x04 << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_TIMER_REG(name) \ |
| (offsetof(struct kvm_riscv_timer, name) / sizeof(__u64)) |
| |
| /* F extension registers are mapped as type 5 */ |
| #define KVM_REG_RISCV_FP_F (0x05 << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_FP_F_REG(name) \ |
| (offsetof(struct __riscv_f_ext_state, name) / sizeof(__u32)) |
| |
| /* D extension registers are mapped as type 6 */ |
| #define KVM_REG_RISCV_FP_D (0x06 << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_FP_D_REG(name) \ |
| (offsetof(struct __riscv_d_ext_state, name) / sizeof(__u64)) |
| |
| /* ISA Extension registers are mapped as type 7 */ |
| #define KVM_REG_RISCV_ISA_EXT (0x07 << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_ISA_SINGLE (0x0 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_ISA_MULTI_EN (0x1 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_ISA_MULTI_DIS (0x2 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_ISA_MULTI_REG(__ext_id) \ |
| ((__ext_id) / __BITS_PER_LONG) |
| #define KVM_REG_RISCV_ISA_MULTI_MASK(__ext_id) \ |
| (1UL << ((__ext_id) % __BITS_PER_LONG)) |
| #define KVM_REG_RISCV_ISA_MULTI_REG_LAST \ |
| KVM_REG_RISCV_ISA_MULTI_REG(KVM_RISCV_ISA_EXT_MAX - 1) |
| |
| /* SBI extension registers are mapped as type 8 */ |
| #define KVM_REG_RISCV_SBI_EXT (0x08 << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_SBI_SINGLE (0x0 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_SBI_MULTI_EN (0x1 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_SBI_MULTI_DIS (0x2 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_SBI_MULTI_REG(__ext_id) \ |
| ((__ext_id) / __BITS_PER_LONG) |
| #define KVM_REG_RISCV_SBI_MULTI_MASK(__ext_id) \ |
| (1UL << ((__ext_id) % __BITS_PER_LONG)) |
| #define KVM_REG_RISCV_SBI_MULTI_REG_LAST \ |
| KVM_REG_RISCV_SBI_MULTI_REG(KVM_RISCV_SBI_EXT_MAX - 1) |
| |
| /* V extension registers are mapped as type 9 */ |
| #define KVM_REG_RISCV_VECTOR (0x09 << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_VECTOR_CSR_REG(name) \ |
| (offsetof(struct __riscv_v_ext_state, name) / sizeof(unsigned long)) |
| #define KVM_REG_RISCV_VECTOR_REG(n) \ |
| ((n) + sizeof(struct __riscv_v_ext_state) / sizeof(unsigned long)) |
| |
| /* Registers for specific SBI extensions are mapped as type 10 */ |
| #define KVM_REG_RISCV_SBI_STATE (0x0a << KVM_REG_RISCV_TYPE_SHIFT) |
| #define KVM_REG_RISCV_SBI_STA (0x0 << KVM_REG_RISCV_SUBTYPE_SHIFT) |
| #define KVM_REG_RISCV_SBI_STA_REG(name) \ |
| (offsetof(struct kvm_riscv_sbi_sta, name) / sizeof(unsigned long)) |
| |
| /* Device Control API: RISC-V AIA */ |
| #define KVM_DEV_RISCV_APLIC_ALIGN 0x1000 |
| #define KVM_DEV_RISCV_APLIC_SIZE 0x4000 |
| #define KVM_DEV_RISCV_APLIC_MAX_HARTS 0x4000 |
| #define KVM_DEV_RISCV_IMSIC_ALIGN 0x1000 |
| #define KVM_DEV_RISCV_IMSIC_SIZE 0x1000 |
| |
| #define KVM_DEV_RISCV_AIA_GRP_CONFIG 0 |
| #define KVM_DEV_RISCV_AIA_CONFIG_MODE 0 |
| #define KVM_DEV_RISCV_AIA_CONFIG_IDS 1 |
| #define KVM_DEV_RISCV_AIA_CONFIG_SRCS 2 |
| #define KVM_DEV_RISCV_AIA_CONFIG_GROUP_BITS 3 |
| #define KVM_DEV_RISCV_AIA_CONFIG_GROUP_SHIFT 4 |
| #define KVM_DEV_RISCV_AIA_CONFIG_HART_BITS 5 |
| #define KVM_DEV_RISCV_AIA_CONFIG_GUEST_BITS 6 |
| |
| /* |
| * Modes of RISC-V AIA device: |
| * 1) EMUL (aka Emulation): Trap-n-emulate IMSIC |
| * 2) HWACCEL (aka HW Acceleration): Virtualize IMSIC using IMSIC guest files |
| * 3) AUTO (aka Automatic): Virtualize IMSIC using IMSIC guest files whenever |
| * available otherwise fallback to trap-n-emulation |
| */ |
| #define KVM_DEV_RISCV_AIA_MODE_EMUL 0 |
| #define KVM_DEV_RISCV_AIA_MODE_HWACCEL 1 |
| #define KVM_DEV_RISCV_AIA_MODE_AUTO 2 |
| |
| #define KVM_DEV_RISCV_AIA_IDS_MIN 63 |
| #define KVM_DEV_RISCV_AIA_IDS_MAX 2048 |
| #define KVM_DEV_RISCV_AIA_SRCS_MAX 1024 |
| #define KVM_DEV_RISCV_AIA_GROUP_BITS_MAX 8 |
| #define KVM_DEV_RISCV_AIA_GROUP_SHIFT_MIN 24 |
| #define KVM_DEV_RISCV_AIA_GROUP_SHIFT_MAX 56 |
| #define KVM_DEV_RISCV_AIA_HART_BITS_MAX 16 |
| #define KVM_DEV_RISCV_AIA_GUEST_BITS_MAX 8 |
| |
| #define KVM_DEV_RISCV_AIA_GRP_ADDR 1 |
| #define KVM_DEV_RISCV_AIA_ADDR_APLIC 0 |
| #define KVM_DEV_RISCV_AIA_ADDR_IMSIC(__vcpu) (1 + (__vcpu)) |
| #define KVM_DEV_RISCV_AIA_ADDR_MAX \ |
| (1 + KVM_DEV_RISCV_APLIC_MAX_HARTS) |
| |
| #define KVM_DEV_RISCV_AIA_GRP_CTRL 2 |
| #define KVM_DEV_RISCV_AIA_CTRL_INIT 0 |
| |
| /* |
| * The device attribute type contains the memory mapped offset of the |
| * APLIC register (range 0x0000-0x3FFF) and it must be 4-byte aligned. |
| */ |
| #define KVM_DEV_RISCV_AIA_GRP_APLIC 3 |
| |
| /* |
| * The lower 12-bits of the device attribute type contains the iselect |
| * value of the IMSIC register (range 0x70-0xFF) whereas the higher order |
| * bits contains the VCPU id. |
| */ |
| #define KVM_DEV_RISCV_AIA_GRP_IMSIC 4 |
| #define KVM_DEV_RISCV_AIA_IMSIC_ISEL_BITS 12 |
| #define KVM_DEV_RISCV_AIA_IMSIC_ISEL_MASK \ |
| ((1U << KVM_DEV_RISCV_AIA_IMSIC_ISEL_BITS) - 1) |
| #define KVM_DEV_RISCV_AIA_IMSIC_MKATTR(__vcpu, __isel) \ |
| (((__vcpu) << KVM_DEV_RISCV_AIA_IMSIC_ISEL_BITS) | \ |
| ((__isel) & KVM_DEV_RISCV_AIA_IMSIC_ISEL_MASK)) |
| #define KVM_DEV_RISCV_AIA_IMSIC_GET_ISEL(__attr) \ |
| ((__attr) & KVM_DEV_RISCV_AIA_IMSIC_ISEL_MASK) |
| #define KVM_DEV_RISCV_AIA_IMSIC_GET_VCPU(__attr) \ |
| ((__attr) >> KVM_DEV_RISCV_AIA_IMSIC_ISEL_BITS) |
| |
| /* One single KVM irqchip, ie. the AIA */ |
| #define KVM_NR_IRQCHIPS 1 |
| |
| #endif |
| |
| #endif /* __LINUX_KVM_RISCV_H */ |
