diff options
Diffstat (limited to 'tools/testing/selftests/kvm/include/x86_64/apic.h')
| -rw-r--r-- | tools/testing/selftests/kvm/include/x86_64/apic.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/tools/testing/selftests/kvm/include/x86_64/apic.h b/tools/testing/selftests/kvm/include/x86_64/apic.h new file mode 100644 index 000000000000..bed316fdecd5 --- /dev/null +++ b/tools/testing/selftests/kvm/include/x86_64/apic.h @@ -0,0 +1,93 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * tools/testing/selftests/kvm/include/x86_64/apic.h + * + * Copyright (C) 2021, Google LLC. + */ + +#ifndef SELFTEST_KVM_APIC_H +#define SELFTEST_KVM_APIC_H + +#include <stdint.h> + +#include "processor.h" + +#define APIC_DEFAULT_GPA 0xfee00000ULL + +/* APIC base address MSR and fields */ +#define MSR_IA32_APICBASE 0x0000001b +#define MSR_IA32_APICBASE_BSP (1<<8) +#define MSR_IA32_APICBASE_EXTD (1<<10) +#define MSR_IA32_APICBASE_ENABLE (1<<11) +#define MSR_IA32_APICBASE_BASE (0xfffff<<12) +#define GET_APIC_BASE(x) (((x) >> 12) << 12) + +#define APIC_BASE_MSR 0x800 +#define X2APIC_ENABLE (1UL << 10) +#define APIC_ID 0x20 +#define APIC_LVR 0x30 +#define GET_APIC_ID_FIELD(x) (((x) >> 24) & 0xFF) +#define APIC_TASKPRI 0x80 +#define APIC_PROCPRI 0xA0 +#define APIC_EOI 0xB0 +#define APIC_SPIV 0xF0 +#define APIC_SPIV_FOCUS_DISABLED (1 << 9) +#define APIC_SPIV_APIC_ENABLED (1 << 8) +#define APIC_IRR 0x200 +#define APIC_ICR 0x300 +#define APIC_LVTCMCI 0x2f0 +#define APIC_DEST_SELF 0x40000 +#define APIC_DEST_ALLINC 0x80000 +#define APIC_DEST_ALLBUT 0xC0000 +#define APIC_ICR_RR_MASK 0x30000 +#define APIC_ICR_RR_INVALID 0x00000 +#define APIC_ICR_RR_INPROG 0x10000 +#define APIC_ICR_RR_VALID 0x20000 +#define APIC_INT_LEVELTRIG 0x08000 +#define APIC_INT_ASSERT 0x04000 +#define APIC_ICR_BUSY 0x01000 +#define APIC_DEST_LOGICAL 0x00800 +#define APIC_DEST_PHYSICAL 0x00000 +#define APIC_DM_FIXED 0x00000 +#define APIC_DM_FIXED_MASK 0x00700 +#define APIC_DM_LOWEST 0x00100 +#define APIC_DM_SMI 0x00200 +#define APIC_DM_REMRD 0x00300 +#define APIC_DM_NMI 0x00400 +#define APIC_DM_INIT 0x00500 +#define APIC_DM_STARTUP 0x00600 +#define APIC_DM_EXTINT 0x00700 +#define APIC_VECTOR_MASK 0x000FF +#define APIC_ICR2 0x310 +#define SET_APIC_DEST_FIELD(x) ((x) << 24) + +void apic_disable(void); +void xapic_enable(void); +void x2apic_enable(void); + +static inline uint32_t get_bsp_flag(void) +{ + return rdmsr(MSR_IA32_APICBASE) & MSR_IA32_APICBASE_BSP; +} + +static inline uint32_t xapic_read_reg(unsigned int reg) +{ + return ((volatile uint32_t *)APIC_DEFAULT_GPA)[reg >> 2]; +} + +static inline void xapic_write_reg(unsigned int reg, uint32_t val) +{ + ((volatile uint32_t *)APIC_DEFAULT_GPA)[reg >> 2] = val; +} + +static inline uint64_t x2apic_read_reg(unsigned int reg) +{ + return rdmsr(APIC_BASE_MSR + (reg >> 4)); +} + +static inline void x2apic_write_reg(unsigned int reg, uint64_t value) +{ + wrmsr(APIC_BASE_MSR + (reg >> 4), value); +} + +#endif /* SELFTEST_KVM_APIC_H */ |