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 63 void apic_disable(void); 64 void xapic_enable(void); 65 void x2apic_enable(void); 66 get_bsp_flag(void)67static inline uint32_t get_bsp_flag(void) 68 { 69 return rdmsr(MSR_IA32_APICBASE) & MSR_IA32_APICBASE_BSP; 70 } 71 xapic_read_reg(unsigned int reg)72static inline uint32_t xapic_read_reg(unsigned int reg) 73 { 74 return ((volatile uint32_t *)APIC_DEFAULT_GPA)[reg >> 2]; 75 } 76 xapic_write_reg(unsigned int reg,uint32_t val)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 x2apic_read_reg(unsigned int reg)82static inline uint64_t x2apic_read_reg(unsigned int reg) 83 { 84 return rdmsr(APIC_BASE_MSR + (reg >> 4)); 85 } 86 x2apic_write_reg(unsigned int reg,uint64_t value)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 */ 93