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_LVTCMCI 0x2f0 39 #define APIC_DEST_SELF 0x40000 40 #define APIC_DEST_ALLINC 0x80000 41 #define APIC_DEST_ALLBUT 0xC0000 42 #define APIC_ICR_RR_MASK 0x30000 43 #define APIC_ICR_RR_INVALID 0x00000 44 #define APIC_ICR_RR_INPROG 0x10000 45 #define APIC_ICR_RR_VALID 0x20000 46 #define APIC_INT_LEVELTRIG 0x08000 47 #define APIC_INT_ASSERT 0x04000 48 #define APIC_ICR_BUSY 0x01000 49 #define APIC_DEST_LOGICAL 0x00800 50 #define APIC_DEST_PHYSICAL 0x00000 51 #define APIC_DM_FIXED 0x00000 52 #define APIC_DM_FIXED_MASK 0x00700 53 #define APIC_DM_LOWEST 0x00100 54 #define APIC_DM_SMI 0x00200 55 #define APIC_DM_REMRD 0x00300 56 #define APIC_DM_NMI 0x00400 57 #define APIC_DM_INIT 0x00500 58 #define APIC_DM_STARTUP 0x00600 59 #define APIC_DM_EXTINT 0x00700 60 #define APIC_VECTOR_MASK 0x000FF 61 #define APIC_ICR2 0x310 62 #define SET_APIC_DEST_FIELD(x) ((x) << 24) 63 64 void apic_disable(void); 65 void xapic_enable(void); 66 void x2apic_enable(void); 67 68 static inline uint32_t get_bsp_flag(void) 69 { 70 return rdmsr(MSR_IA32_APICBASE) & MSR_IA32_APICBASE_BSP; 71 } 72 73 static inline uint32_t xapic_read_reg(unsigned int reg) 74 { 75 return ((volatile uint32_t *)APIC_DEFAULT_GPA)[reg >> 2]; 76 } 77 78 static inline void xapic_write_reg(unsigned int reg, uint32_t val) 79 { 80 ((volatile uint32_t *)APIC_DEFAULT_GPA)[reg >> 2] = val; 81 } 82 83 static inline uint64_t x2apic_read_reg(unsigned int reg) 84 { 85 return rdmsr(APIC_BASE_MSR + (reg >> 4)); 86 } 87 88 static inline void x2apic_write_reg(unsigned int reg, uint64_t value) 89 { 90 wrmsr(APIC_BASE_MSR + (reg >> 4), value); 91 } 92 93 #endif /* SELFTEST_KVM_APIC_H */ 94