apic.h (2458B)
1/* SPDX-License-Identifier: GPL-2.0-only */ 2/* 3 * tools/testing/selftests/kvm/include/x86_64/apic.h 4 * 5 * Copyright (C) 2021, Google LLC. 6 */ 7 8#ifndef SELFTEST_KVM_APIC_H 9#define SELFTEST_KVM_APIC_H 10 11#include <stdint.h> 12 13#include "processor.h" 14 15#define APIC_DEFAULT_GPA 0xfee00000ULL 16 17/* APIC base address MSR and fields */ 18#define MSR_IA32_APICBASE 0x0000001b 19#define MSR_IA32_APICBASE_BSP (1<<8) 20#define MSR_IA32_APICBASE_EXTD (1<<10) 21#define MSR_IA32_APICBASE_ENABLE (1<<11) 22#define MSR_IA32_APICBASE_BASE (0xfffff<<12) 23#define GET_APIC_BASE(x) (((x) >> 12) << 12) 24 25#define APIC_BASE_MSR 0x800 26#define X2APIC_ENABLE (1UL << 10) 27#define APIC_ID 0x20 28#define APIC_LVR 0x30 29#define GET_APIC_ID_FIELD(x) (((x) >> 24) & 0xFF) 30#define APIC_TASKPRI 0x80 31#define APIC_PROCPRI 0xA0 32#define APIC_EOI 0xB0 33#define APIC_SPIV 0xF0 34#define APIC_SPIV_FOCUS_DISABLED (1 << 9) 35#define APIC_SPIV_APIC_ENABLED (1 << 8) 36#define APIC_IRR 0x200 37#define APIC_ICR 0x300 38#define APIC_DEST_SELF 0x40000 39#define APIC_DEST_ALLINC 0x80000 40#define APIC_DEST_ALLBUT 0xC0000 41#define APIC_ICR_RR_MASK 0x30000 42#define APIC_ICR_RR_INVALID 0x00000 43#define APIC_ICR_RR_INPROG 0x10000 44#define APIC_ICR_RR_VALID 0x20000 45#define APIC_INT_LEVELTRIG 0x08000 46#define APIC_INT_ASSERT 0x04000 47#define APIC_ICR_BUSY 0x01000 48#define APIC_DEST_LOGICAL 0x00800 49#define APIC_DEST_PHYSICAL 0x00000 50#define APIC_DM_FIXED 0x00000 51#define APIC_DM_FIXED_MASK 0x00700 52#define APIC_DM_LOWEST 0x00100 53#define APIC_DM_SMI 0x00200 54#define APIC_DM_REMRD 0x00300 55#define APIC_DM_NMI 0x00400 56#define APIC_DM_INIT 0x00500 57#define APIC_DM_STARTUP 0x00600 58#define APIC_DM_EXTINT 0x00700 59#define APIC_VECTOR_MASK 0x000FF 60#define APIC_ICR2 0x310 61#define SET_APIC_DEST_FIELD(x) ((x) << 24) 62 63void apic_disable(void); 64void xapic_enable(void); 65void x2apic_enable(void); 66 67static inline uint32_t get_bsp_flag(void) 68{ 69 return rdmsr(MSR_IA32_APICBASE) & MSR_IA32_APICBASE_BSP; 70} 71 72static inline uint32_t xapic_read_reg(unsigned int reg) 73{ 74 return ((volatile uint32_t *)APIC_DEFAULT_GPA)[reg >> 2]; 75} 76 77static inline void xapic_write_reg(unsigned int reg, uint32_t val) 78{ 79 ((volatile uint32_t *)APIC_DEFAULT_GPA)[reg >> 2] = val; 80} 81 82static inline uint64_t x2apic_read_reg(unsigned int reg) 83{ 84 return rdmsr(APIC_BASE_MSR + (reg >> 4)); 85} 86 87static inline void x2apic_write_reg(unsigned int reg, uint64_t value) 88{ 89 wrmsr(APIC_BASE_MSR + (reg >> 4), value); 90} 91 92#endif /* SELFTEST_KVM_APIC_H */