1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef __KVM_IO_APIC_H
3 #define __KVM_IO_APIC_H
5 #include <linux/kvm_host.h>
12 #define IOAPIC_NUM_PINS KVM_IOAPIC_NUM_PINS
13 #define MAX_NR_RESERVED_IOAPIC_PINS KVM_MAX_IRQ_ROUTES
14 #define IOAPIC_VERSION_ID 0x11 /* IOAPIC version */
15 #define IOAPIC_EDGE_TRIG 0
16 #define IOAPIC_LEVEL_TRIG 1
18 #define IOAPIC_DEFAULT_BASE_ADDRESS 0xfec00000
19 #define IOAPIC_MEM_LENGTH 0x100
21 /* Direct registers. */
22 #define IOAPIC_REG_SELECT 0x00
23 #define IOAPIC_REG_WINDOW 0x10
25 /* Indirect registers. */
26 #define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */
27 #define IOAPIC_REG_VERSION 0x01
28 #define IOAPIC_REG_ARB_ID 0x02 /* x86 IOAPIC only */
30 /*ioapic delivery mode*/
31 #define IOAPIC_FIXED 0x0
32 #define IOAPIC_LOWEST_PRIORITY 0x1
33 #define IOAPIC_PMI 0x2
34 #define IOAPIC_NMI 0x4
35 #define IOAPIC_INIT 0x5
36 #define IOAPIC_EXTINT 0x7
41 /* vcpu bitmap where IRQ has been sent */
42 DECLARE_BITMAP(map, KVM_MAX_VCPU_ID);
45 * Vector sent to a given vcpu, only valid when
46 * the vcpu's bit in map is set
48 u8 vectors[KVM_MAX_VCPU_ID];
54 struct dest_map dest_map;
57 union kvm_ioapic_redirect_entry {
80 union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
81 unsigned long irq_states[IOAPIC_NUM_PINS];
82 struct kvm_io_device dev;
85 struct rtc_status rtc_status;
86 struct delayed_work eoi_inject;
87 u32 irq_eoi[IOAPIC_NUM_PINS];
95 printk(KERN_EMERG "assertion failed %s: %d: %s\n", \
96 __FILE__, __LINE__, #x); \
101 #define ASSERT(x) do { } while (0)
104 static inline int ioapic_in_kernel(struct kvm *kvm)
106 return irqchip_kernel(kvm);
109 void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
110 void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
112 int kvm_ioapic_init(struct kvm *kvm);
113 void kvm_ioapic_destroy(struct kvm *kvm);
114 int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
115 int level, bool line_status);
116 void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
117 void kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
118 void kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
119 void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu,
120 ulong *ioapic_handled_vectors);
121 void kvm_scan_ioapic_routes(struct kvm_vcpu *vcpu,
122 ulong *ioapic_handled_vectors);