Commit | Line | Data |
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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
82470196 ZX |
2 | #ifndef __KVM_X86_LAPIC_H |
3 | #define __KVM_X86_LAPIC_H | |
4 | ||
af669ac6 | 5 | #include <kvm/iodev.h> |
82470196 ZX |
6 | |
7 | #include <linux/kvm_host.h> | |
8 | ||
66450a21 JK |
9 | #define KVM_APIC_INIT 0 |
10 | #define KVM_APIC_SIPI 1 | |
1e6e2755 | 11 | #define KVM_APIC_LVT_NUM 6 |
66450a21 | 12 | |
18f40c53 SS |
13 | #define KVM_APIC_SHORT_MASK 0xc0000 |
14 | #define KVM_APIC_DEST_MASK 0x800 | |
15 | ||
72c139ba LP |
16 | #define APIC_BUS_CYCLE_NS 1 |
17 | #define APIC_BUS_FREQUENCY (1000000000ULL / APIC_BUS_CYCLE_NS) | |
18 | ||
58871649 JM |
19 | enum lapic_mode { |
20 | LAPIC_MODE_DISABLED = 0, | |
21 | LAPIC_MODE_INVALID = X2APIC_ENABLE, | |
22 | LAPIC_MODE_XAPIC = MSR_IA32_APICBASE_ENABLE, | |
23 | LAPIC_MODE_X2APIC = MSR_IA32_APICBASE_ENABLE | X2APIC_ENABLE, | |
24 | }; | |
25 | ||
e9d90d47 AK |
26 | struct kvm_timer { |
27 | struct hrtimer timer; | |
28 | s64 period; /* unit: ns */ | |
8003c9ae | 29 | ktime_t target_expiration; |
a323b409 | 30 | u32 timer_mode; |
e9d90d47 AK |
31 | u32 timer_mode_mask; |
32 | u64 tscdeadline; | |
d0659d94 | 33 | u64 expired_tscdeadline; |
39497d76 | 34 | u32 timer_advance_ns; |
ec0671d5 | 35 | s64 advance_expire_delta; |
e9d90d47 | 36 | atomic_t pending; /* accumulated triggered timers */ |
ce7a058a | 37 | bool hv_timer_in_use; |
39497d76 | 38 | bool timer_advance_adjust_done; |
e9d90d47 AK |
39 | }; |
40 | ||
82470196 ZX |
41 | struct kvm_lapic { |
42 | unsigned long base_address; | |
43 | struct kvm_io_device dev; | |
d3c7b77d MT |
44 | struct kvm_timer lapic_timer; |
45 | u32 divide_count; | |
82470196 | 46 | struct kvm_vcpu *vcpu; |
e462755c | 47 | bool sw_enabled; |
33e4c686 | 48 | bool irr_pending; |
59fd1323 | 49 | bool lvt0_in_nmi_mode; |
8680b94b MT |
50 | /* Number of bits set in ISR. */ |
51 | s16 isr_count; | |
52 | /* The highest vector set in ISR; if -1 - invalid, must scan ISR. */ | |
53 | int highest_isr_cache; | |
5eadf916 MT |
54 | /** |
55 | * APIC register page. The layout matches the register layout seen by | |
56 | * the guest 1:1, because it is accessed by the vmx microcode. | |
57 | * Note: Only one register, the TPR, is used by the microcode. | |
58 | */ | |
82470196 | 59 | void *regs; |
b93463aa | 60 | gpa_t vapic_addr; |
fda4e2e8 | 61 | struct gfn_to_hva_cache vapic_cache; |
66450a21 JK |
62 | unsigned long pending_events; |
63 | unsigned int sipi_vector; | |
82470196 | 64 | }; |
9e4aabe2 JR |
65 | |
66 | struct dest_map; | |
67 | ||
c3941d9e | 68 | int kvm_create_lapic(struct kvm_vcpu *vcpu, int timer_advance_ns); |
82470196 ZX |
69 | void kvm_free_lapic(struct kvm_vcpu *vcpu); |
70 | ||
71 | int kvm_apic_has_interrupt(struct kvm_vcpu *vcpu); | |
72 | int kvm_apic_accept_pic_intr(struct kvm_vcpu *vcpu); | |
73 | int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu); | |
66450a21 | 74 | void kvm_apic_accept_events(struct kvm_vcpu *vcpu); |
d28bc9dd | 75 | void kvm_lapic_reset(struct kvm_vcpu *vcpu, bool init_event); |
82470196 ZX |
76 | u64 kvm_lapic_get_cr8(struct kvm_vcpu *vcpu); |
77 | void kvm_lapic_set_tpr(struct kvm_vcpu *vcpu, unsigned long cr8); | |
58fbbf26 | 78 | void kvm_lapic_set_eoi(struct kvm_vcpu *vcpu); |
82470196 | 79 | void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value); |
8b2cf73c | 80 | u64 kvm_lapic_get_base(struct kvm_vcpu *vcpu); |
fc61b800 | 81 | void kvm_apic_set_version(struct kvm_vcpu *vcpu); |
1e6e2755 SS |
82 | int kvm_lapic_reg_write(struct kvm_lapic *apic, u32 reg, u32 val); |
83 | int kvm_lapic_reg_read(struct kvm_lapic *apic, u32 offset, int len, | |
84 | void *data); | |
85 | bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source, | |
86 | int short_hand, unsigned int dest, int dest_mode); | |
82470196 | 87 | |
e7387b0e LA |
88 | bool __kvm_apic_update_irr(u32 *pir, void *regs, int *max_irr); |
89 | bool kvm_apic_update_irr(struct kvm_vcpu *vcpu, u32 *pir, int *max_irr); | |
eb90f341 | 90 | void kvm_apic_update_ppr(struct kvm_vcpu *vcpu); |
b4f2225c | 91 | int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq, |
9e4aabe2 | 92 | struct dest_map *dest_map); |
89342082 | 93 | int kvm_apic_local_deliver(struct kvm_lapic *apic, int lvt_type); |
82470196 | 94 | |
1e08ec4a | 95 | bool kvm_irq_delivery_to_apic_fast(struct kvm *kvm, struct kvm_lapic *src, |
9e4aabe2 | 96 | struct kvm_lapic_irq *irq, int *r, struct dest_map *dest_map); |
1e08ec4a | 97 | |
82470196 | 98 | u64 kvm_get_apic_base(struct kvm_vcpu *vcpu); |
58cb628d | 99 | int kvm_set_apic_base(struct kvm_vcpu *vcpu, struct msr_data *msr_info); |
a92e2543 RK |
100 | int kvm_apic_get_state(struct kvm_vcpu *vcpu, struct kvm_lapic_state *s); |
101 | int kvm_apic_set_state(struct kvm_vcpu *vcpu, struct kvm_lapic_state *s); | |
58871649 | 102 | enum lapic_mode kvm_get_apic_mode(struct kvm_vcpu *vcpu); |
82470196 | 103 | int kvm_lapic_find_highest_irr(struct kvm_vcpu *vcpu); |
82470196 | 104 | |
a3e06bbe LJ |
105 | u64 kvm_get_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu); |
106 | void kvm_set_lapic_tscdeadline_msr(struct kvm_vcpu *vcpu, u64 data); | |
107 | ||
83d4c286 | 108 | void kvm_apic_write_nodecode(struct kvm_vcpu *vcpu, u32 offset); |
c7c9c56c | 109 | void kvm_apic_set_eoi_accelerated(struct kvm_vcpu *vcpu, int vector); |
83d4c286 | 110 | |
fda4e2e8 | 111 | int kvm_lapic_set_vapic_addr(struct kvm_vcpu *vcpu, gpa_t vapic_addr); |
b93463aa AK |
112 | void kvm_lapic_sync_from_vapic(struct kvm_vcpu *vcpu); |
113 | void kvm_lapic_sync_to_vapic(struct kvm_vcpu *vcpu); | |
114 | ||
0105d1a5 GN |
115 | int kvm_x2apic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data); |
116 | int kvm_x2apic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data); | |
10388a07 GN |
117 | |
118 | int kvm_hv_vapic_msr_write(struct kvm_vcpu *vcpu, u32 msr, u64 data); | |
119 | int kvm_hv_vapic_msr_read(struct kvm_vcpu *vcpu, u32 msr, u64 *data); | |
120 | ||
121 | static inline bool kvm_hv_vapic_assist_page_enabled(struct kvm_vcpu *vcpu) | |
122 | { | |
d4abc577 | 123 | return vcpu->arch.hyperv.hv_vapic & HV_X64_MSR_VP_ASSIST_PAGE_ENABLE; |
10388a07 | 124 | } |
ae7a2a3f | 125 | |
72bbf935 | 126 | int kvm_lapic_enable_pv_eoi(struct kvm_vcpu *vcpu, u64 data, unsigned long len); |
c5cc421b | 127 | void kvm_lapic_init(void); |
cef84c30 | 128 | void kvm_lapic_exit(void); |
c48f1496 | 129 | |
1e6e2755 SS |
130 | #define VEC_POS(v) ((v) & (32 - 1)) |
131 | #define REG_POS(v) (((v) >> 5) << 4) | |
132 | ||
ee171d2f WY |
133 | static inline void kvm_lapic_clear_vector(int vec, void *bitmap) |
134 | { | |
135 | clear_bit(VEC_POS(vec), (bitmap) + REG_POS(vec)); | |
136 | } | |
137 | ||
1e6e2755 SS |
138 | static inline void kvm_lapic_set_vector(int vec, void *bitmap) |
139 | { | |
140 | set_bit(VEC_POS(vec), (bitmap) + REG_POS(vec)); | |
141 | } | |
142 | ||
143 | static inline void kvm_lapic_set_irr(int vec, struct kvm_lapic *apic) | |
144 | { | |
145 | kvm_lapic_set_vector(vec, apic->regs + APIC_IRR); | |
146 | /* | |
147 | * irr_pending must be true if any interrupt is pending; set it after | |
148 | * APIC_IRR to avoid race with apic_clear_irr | |
149 | */ | |
150 | apic->irr_pending = true; | |
151 | } | |
152 | ||
dfb95954 | 153 | static inline u32 kvm_lapic_get_reg(struct kvm_lapic *apic, int reg_off) |
c48f1496 | 154 | { |
dfb95954 | 155 | return *((u32 *) (apic->regs + reg_off)); |
c48f1496 GN |
156 | } |
157 | ||
1e6e2755 SS |
158 | static inline void kvm_lapic_set_reg(struct kvm_lapic *apic, int reg_off, u32 val) |
159 | { | |
160 | *((u32 *) (apic->regs + reg_off)) = val; | |
161 | } | |
162 | ||
c48f1496 GN |
163 | extern struct static_key kvm_no_apic_vcpu; |
164 | ||
bce87cce | 165 | static inline bool lapic_in_kernel(struct kvm_vcpu *vcpu) |
c48f1496 GN |
166 | { |
167 | if (static_key_false(&kvm_no_apic_vcpu)) | |
168 | return vcpu->arch.apic; | |
169 | return true; | |
170 | } | |
171 | ||
172 | extern struct static_key_deferred apic_hw_disabled; | |
173 | ||
174 | static inline int kvm_apic_hw_enabled(struct kvm_lapic *apic) | |
175 | { | |
176 | if (static_key_false(&apic_hw_disabled.key)) | |
177 | return apic->vcpu->arch.apic_base & MSR_IA32_APICBASE_ENABLE; | |
178 | return MSR_IA32_APICBASE_ENABLE; | |
179 | } | |
180 | ||
181 | extern struct static_key_deferred apic_sw_disabled; | |
182 | ||
f30ebc31 | 183 | static inline bool kvm_apic_sw_enabled(struct kvm_lapic *apic) |
c48f1496 GN |
184 | { |
185 | if (static_key_false(&apic_sw_disabled.key)) | |
f30ebc31 RK |
186 | return apic->sw_enabled; |
187 | return true; | |
c48f1496 GN |
188 | } |
189 | ||
190 | static inline bool kvm_apic_present(struct kvm_vcpu *vcpu) | |
191 | { | |
bce87cce | 192 | return lapic_in_kernel(vcpu) && kvm_apic_hw_enabled(vcpu->arch.apic); |
c48f1496 GN |
193 | } |
194 | ||
195 | static inline int kvm_lapic_enabled(struct kvm_vcpu *vcpu) | |
196 | { | |
197 | return kvm_apic_present(vcpu) && kvm_apic_sw_enabled(vcpu->arch.apic); | |
198 | } | |
199 | ||
8d14695f YZ |
200 | static inline int apic_x2apic_mode(struct kvm_lapic *apic) |
201 | { | |
202 | return apic->vcpu->arch.apic_base & X2APIC_ENABLE; | |
203 | } | |
204 | ||
d62caabb | 205 | static inline bool kvm_vcpu_apicv_active(struct kvm_vcpu *vcpu) |
c7c9c56c | 206 | { |
d62caabb | 207 | return vcpu->arch.apic && vcpu->arch.apicv_active; |
c7c9c56c YZ |
208 | } |
209 | ||
66450a21 JK |
210 | static inline bool kvm_apic_has_events(struct kvm_vcpu *vcpu) |
211 | { | |
bce87cce | 212 | return lapic_in_kernel(vcpu) && vcpu->arch.apic->pending_events; |
66450a21 JK |
213 | } |
214 | ||
d1ebdbf9 JS |
215 | static inline bool kvm_lowest_prio_delivery(struct kvm_lapic_irq *irq) |
216 | { | |
217 | return (irq->delivery_mode == APIC_DM_LOWEST || | |
218 | irq->msi_redir_hint); | |
219 | } | |
220 | ||
f077825a PB |
221 | static inline int kvm_lapic_latched_init(struct kvm_vcpu *vcpu) |
222 | { | |
bce87cce | 223 | return lapic_in_kernel(vcpu) && test_bit(KVM_APIC_INIT, &vcpu->arch.apic->pending_events); |
f077825a PB |
224 | } |
225 | ||
10606919 YZ |
226 | bool kvm_apic_pending_eoi(struct kvm_vcpu *vcpu, int vector); |
227 | ||
b6c4bc65 | 228 | void kvm_wait_lapic_expire(struct kvm_vcpu *vcpu); |
d0659d94 | 229 | |
8feb4a04 FW |
230 | bool kvm_intr_is_single_vcpu_fast(struct kvm *kvm, struct kvm_lapic_irq *irq, |
231 | struct kvm_vcpu **dest_vcpu); | |
52004014 FW |
232 | int kvm_vector_to_index(u32 vector, u32 dest_vcpus, |
233 | const unsigned long *bitmap, u32 bitmap_size); | |
ce7a058a YJ |
234 | void kvm_lapic_switch_to_sw_timer(struct kvm_vcpu *vcpu); |
235 | void kvm_lapic_switch_to_hv_timer(struct kvm_vcpu *vcpu); | |
236 | void kvm_lapic_expired_hv_timer(struct kvm_vcpu *vcpu); | |
237 | bool kvm_lapic_hv_timer_in_use(struct kvm_vcpu *vcpu); | |
a749e247 | 238 | void kvm_lapic_restart_hv_timer(struct kvm_vcpu *vcpu); |
0c5f81da | 239 | bool kvm_can_post_timer_interrupt(struct kvm_vcpu *vcpu); |
58871649 JM |
240 | |
241 | static inline enum lapic_mode kvm_apic_mode(u64 apic_base) | |
242 | { | |
243 | return apic_base & (MSR_IA32_APICBASE_ENABLE | X2APIC_ENABLE); | |
244 | } | |
245 | ||
82470196 | 246 | #endif |