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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 2012 MIPS Technologies, Inc. All rights reserved. * Copyright (C) 2013 Cavium, Inc. * Authors: Sanjay Lal <sanjayl@kymasys.com> */ #ifndef __LINUX_KVM_MIPS_H #define __LINUX_KVM_MIPS_H #include <linux/types.h> /* * KVM MIPS specific structures and definitions. * * Some parts derived from the x86 version of this file. */ #define KVM_COALESCED_MMIO_PAGE_OFFSET 1 /* * for KVM_GET_REGS and KVM_SET_REGS * * If Config[AT] is zero (32-bit CPU), the register contents are * stored in the lower 32-bits of the struct kvm_regs fields and sign * extended to 64-bits. */ struct kvm_regs { /* out (KVM_GET_REGS) / in (KVM_SET_REGS) */ __u64 gpr[32]; __u64 hi; __u64 lo; __u64 pc; }; /* * for KVM_GET_FPU and KVM_SET_FPU */ struct kvm_fpu { }; /* * For MIPS, 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: CP0 registers. * bits[15..8] - COP0 register set. * * COP0 register set = 0: Main CP0 registers. * bits[7..3] - Register 'rd' index. * bits[2..0] - Register 'sel' index. * * COP0 register set = 1: MAARs. * bits[7..0] - MAAR index. * * Register set = 2: KVM specific registers (see definitions below). * * Register set = 3: FPU / MSA 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_MIPS_GP (KVM_REG_MIPS | 0x0000000000000000ULL) #define KVM_REG_MIPS_CP0 (KVM_REG_MIPS | 0x0000000000010000ULL) #define KVM_REG_MIPS_KVM (KVM_REG_MIPS | 0x0000000000020000ULL) #define KVM_REG_MIPS_FPU (KVM_REG_MIPS | 0x0000000000030000ULL) /* * KVM_REG_MIPS_GP - General purpose registers from kvm_regs. */ #define KVM_REG_MIPS_R0 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 0) #define KVM_REG_MIPS_R1 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 1) #define KVM_REG_MIPS_R2 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 2) #define KVM_REG_MIPS_R3 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 3) #define KVM_REG_MIPS_R4 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 4) #define KVM_REG_MIPS_R5 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 5) #define KVM_REG_MIPS_R6 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 6) #define KVM_REG_MIPS_R7 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 7) #define KVM_REG_MIPS_R8 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 8) #define KVM_REG_MIPS_R9 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 9) #define KVM_REG_MIPS_R10 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 10) #define KVM_REG_MIPS_R11 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 11) #define KVM_REG_MIPS_R12 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 12) #define KVM_REG_MIPS_R13 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 13) #define KVM_REG_MIPS_R14 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 14) #define KVM_REG_MIPS_R15 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 15) #define KVM_REG_MIPS_R16 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 16) #define KVM_REG_MIPS_R17 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 17) #define KVM_REG_MIPS_R18 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 18) #define KVM_REG_MIPS_R19 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 19) #define KVM_REG_MIPS_R20 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 20) #define KVM_REG_MIPS_R21 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 21) #define KVM_REG_MIPS_R22 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 22) #define KVM_REG_MIPS_R23 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 23) #define KVM_REG_MIPS_R24 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 24) #define KVM_REG_MIPS_R25 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 25) #define KVM_REG_MIPS_R26 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 26) #define KVM_REG_MIPS_R27 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 27) #define KVM_REG_MIPS_R28 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 28) #define KVM_REG_MIPS_R29 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 29) #define KVM_REG_MIPS_R30 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 30) #define KVM_REG_MIPS_R31 (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 31) #define KVM_REG_MIPS_HI (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 32) #define KVM_REG_MIPS_LO (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 33) #define KVM_REG_MIPS_PC (KVM_REG_MIPS_GP | KVM_REG_SIZE_U64 | 34) /* * KVM_REG_MIPS_CP0 - Coprocessor 0 registers. */ #define KVM_REG_MIPS_MAAR (KVM_REG_MIPS_CP0 | (1 << 8)) #define KVM_REG_MIPS_CP0_MAAR(n) (KVM_REG_MIPS_MAAR | \ KVM_REG_SIZE_U64 | (n)) /* * KVM_REG_MIPS_KVM - KVM specific control registers. */ /* * CP0_Count control * DC: Set 0: Master disable CP0_Count and set COUNT_RESUME to now * Set 1: Master re-enable CP0_Count with unchanged bias, handling timer * interrupts since COUNT_RESUME * This can be used to freeze the timer to get a consistent snapshot of * the CP0_Count and timer interrupt pending state, while also resuming * safely without losing time or guest timer interrupts. * Other: Reserved, do not change. */ #define KVM_REG_MIPS_COUNT_CTL (KVM_REG_MIPS_KVM | KVM_REG_SIZE_U64 | 0) #define KVM_REG_MIPS_COUNT_CTL_DC 0x00000001 /* * CP0_Count resume monotonic nanoseconds * The monotonic nanosecond time of the last set of COUNT_CTL.DC (master * disable). Any reads and writes of Count related registers while * COUNT_CTL.DC=1 will appear to occur at this time. When COUNT_CTL.DC is * cleared again (master enable) any timer interrupts since this time will be * emulated. * Modifications to times in the future are rejected. */ #define KVM_REG_MIPS_COUNT_RESUME (KVM_REG_MIPS_KVM | KVM_REG_SIZE_U64 | 1) /* * CP0_Count rate in Hz * Specifies the rate of the CP0_Count timer in Hz. Modifications occur without * discontinuities in CP0_Count. */ #define KVM_REG_MIPS_COUNT_HZ (KVM_REG_MIPS_KVM | KVM_REG_SIZE_U64 | 2) /* * KVM_REG_MIPS_FPU - Floating Point and MIPS SIMD Architecture (MSA) registers. * * bits[15..8] - Register subset (see definitions below). * bits[7..5] - Must be zero. * bits[4..0] - Register number within register subset. */ #define KVM_REG_MIPS_FPR (KVM_REG_MIPS_FPU | 0x0000000000000000ULL) #define KVM_REG_MIPS_FCR (KVM_REG_MIPS_FPU | 0x0000000000000100ULL) #define KVM_REG_MIPS_MSACR (KVM_REG_MIPS_FPU | 0x0000000000000200ULL) /* * KVM_REG_MIPS_FPR - Floating point / Vector registers. */ #define KVM_REG_MIPS_FPR_32(n) (KVM_REG_MIPS_FPR | KVM_REG_SIZE_U32 | (n)) #define KVM_REG_MIPS_FPR_64(n) (KVM_REG_MIPS_FPR | KVM_REG_SIZE_U64 | (n)) #define KVM_REG_MIPS_VEC_128(n) (KVM_REG_MIPS_FPR | KVM_REG_SIZE_U128 | (n)) /* * KVM_REG_MIPS_FCR - Floating point control registers. */ #define KVM_REG_MIPS_FCR_IR (KVM_REG_MIPS_FCR | KVM_REG_SIZE_U32 | 0) #define KVM_REG_MIPS_FCR_CSR (KVM_REG_MIPS_FCR | KVM_REG_SIZE_U32 | 31) /* * KVM_REG_MIPS_MSACR - MIPS SIMD Architecture (MSA) control registers. */ #define KVM_REG_MIPS_MSA_IR (KVM_REG_MIPS_MSACR | KVM_REG_SIZE_U32 | 0) #define KVM_REG_MIPS_MSA_CSR (KVM_REG_MIPS_MSACR | KVM_REG_SIZE_U32 | 1) /* * KVM MIPS specific structures and definitions * */ struct kvm_debug_exit_arch { __u64 epc; }; /* 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 { }; struct kvm_mips_interrupt { /* in */ __u32 cpu; __u32 irq; }; #endif /* __LINUX_KVM_MIPS_H */