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Linux kernel mirror (for testing)
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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_ICR 0x300
37#define APIC_DEST_SELF 0x40000
38#define APIC_DEST_ALLINC 0x80000
39#define APIC_DEST_ALLBUT 0xC0000
40#define APIC_ICR_RR_MASK 0x30000
41#define APIC_ICR_RR_INVALID 0x00000
42#define APIC_ICR_RR_INPROG 0x10000
43#define APIC_ICR_RR_VALID 0x20000
44#define APIC_INT_LEVELTRIG 0x08000
45#define APIC_INT_ASSERT 0x04000
46#define APIC_ICR_BUSY 0x01000
47#define APIC_DEST_LOGICAL 0x00800
48#define APIC_DEST_PHYSICAL 0x00000
49#define APIC_DM_FIXED 0x00000
50#define APIC_DM_FIXED_MASK 0x00700
51#define APIC_DM_LOWEST 0x00100
52#define APIC_DM_SMI 0x00200
53#define APIC_DM_REMRD 0x00300
54#define APIC_DM_NMI 0x00400
55#define APIC_DM_INIT 0x00500
56#define APIC_DM_STARTUP 0x00600
57#define APIC_DM_EXTINT 0x00700
58#define APIC_VECTOR_MASK 0x000FF
59#define APIC_ICR2 0x310
60#define SET_APIC_DEST_FIELD(x) ((x) << 24)
61
62void apic_disable(void);
63void xapic_enable(void);
64void x2apic_enable(void);
65
66static inline uint32_t get_bsp_flag(void)
67{
68 return rdmsr(MSR_IA32_APICBASE) & MSR_IA32_APICBASE_BSP;
69}
70
71static inline uint32_t xapic_read_reg(unsigned int reg)
72{
73 return ((volatile uint32_t *)APIC_DEFAULT_GPA)[reg >> 2];
74}
75
76static inline void xapic_write_reg(unsigned int reg, uint32_t val)
77{
78 ((volatile uint32_t *)APIC_DEFAULT_GPA)[reg >> 2] = val;
79}
80
81static inline uint64_t x2apic_read_reg(unsigned int reg)
82{
83 return rdmsr(APIC_BASE_MSR + (reg >> 4));
84}
85
86static inline void x2apic_write_reg(unsigned int reg, uint64_t value)
87{
88 wrmsr(APIC_BASE_MSR + (reg >> 4), value);
89}
90
91#endif /* SELFTEST_KVM_APIC_H */