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Zhang Xiantao82470192007-12-17 13:59:56 +08001#ifndef __KVM_IO_APIC_H
2#define __KVM_IO_APIC_H
3
4#include <linux/kvm_host.h>
5
6#include "iodev.h"
7
8struct kvm;
9struct kvm_vcpu;
10
11#define IOAPIC_NUM_PINS KVM_IOAPIC_NUM_PINS
12#define IOAPIC_VERSION_ID 0x11 /* IOAPIC version */
13#define IOAPIC_EDGE_TRIG 0
14#define IOAPIC_LEVEL_TRIG 1
15
16#define IOAPIC_DEFAULT_BASE_ADDRESS 0xfec00000
17#define IOAPIC_MEM_LENGTH 0x100
18
19/* Direct registers. */
20#define IOAPIC_REG_SELECT 0x00
21#define IOAPIC_REG_WINDOW 0x10
Zhang Xiantao82470192007-12-17 13:59:56 +080022
23/* Indirect registers. */
24#define IOAPIC_REG_APIC_ID 0x00 /* x86 IOAPIC only */
25#define IOAPIC_REG_VERSION 0x01
26#define IOAPIC_REG_ARB_ID 0x02 /* x86 IOAPIC only */
27
28/*ioapic delivery mode*/
29#define IOAPIC_FIXED 0x0
30#define IOAPIC_LOWEST_PRIORITY 0x1
31#define IOAPIC_PMI 0x2
32#define IOAPIC_NMI 0x4
33#define IOAPIC_INIT 0x5
34#define IOAPIC_EXTINT 0x7
35
Yang Zhang8dc6aade2013-04-11 19:21:36 +080036#ifdef CONFIG_X86
37#define RTC_GSI 8
38#else
39#define RTC_GSI -1U
40#endif
41
42struct rtc_status {
43 int pending_eoi;
44 DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);
45};
46
Paolo Bonzinicb5281a2014-12-17 18:17:20 +010047union kvm_ioapic_redirect_entry {
48 u64 bits;
49 struct {
50 u8 vector;
51 u8 delivery_mode:3;
52 u8 dest_mode:1;
53 u8 delivery_status:1;
54 u8 polarity:1;
55 u8 remote_irr:1;
56 u8 trig_mode:1;
57 u8 mask:1;
58 u8 reserve:7;
59 u8 reserved[4];
60 u8 dest_id;
61 } fields;
62};
63
Zhang Xiantao82470192007-12-17 13:59:56 +080064struct kvm_ioapic {
65 u64 base_address;
66 u32 ioregsel;
67 u32 id;
68 u32 irr;
69 u32 pad;
Sheng Yangcf9e4e12009-02-11 16:03:36 +080070 union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
Gleb Natapov1a6e4a82009-08-24 11:54:19 +030071 unsigned long irq_states[IOAPIC_NUM_PINS];
Zhang Xiantao82470192007-12-17 13:59:56 +080072 struct kvm_io_device dev;
73 struct kvm *kvm;
Marcelo Tosattif5244722008-07-26 17:01:00 -030074 void (*ack_notifier)(void *opaque, int irq);
Marcelo Tosatti46a47b12010-04-23 14:03:38 -030075 spinlock_t lock;
Avi Kivity46a929b2009-12-28 14:08:30 +020076 DECLARE_BITMAP(handled_vectors, 256);
Yang Zhang8dc6aade2013-04-11 19:21:36 +080077 struct rtc_status rtc_status;
Zhang Haoyu184564e2014-09-11 16:47:04 +080078 struct delayed_work eoi_inject;
79 u32 irq_eoi[IOAPIC_NUM_PINS];
Zhang Xiantao82470192007-12-17 13:59:56 +080080};
81
82#ifdef DEBUG
83#define ASSERT(x) \
84do { \
85 if (!(x)) { \
86 printk(KERN_EMERG "assertion failed %s: %d: %s\n", \
87 __FILE__, __LINE__, #x); \
88 BUG(); \
89 } \
90} while (0)
91#else
92#define ASSERT(x) do { } while (0)
93#endif
94
95static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
96{
97 return kvm->arch.vioapic;
98}
99
Yang Zhang10606912013-04-11 19:21:38 +0800100void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
Radim Krčmář52c233a2015-01-29 22:48:48 +0100101bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
Nadav Amit394457a2014-10-03 00:30:52 +0300102 int short_hand, unsigned int dest, int dest_mode);
Gleb Natapove1035712009-03-05 16:34:59 +0200103int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
Yang Zhang1fcc7892013-04-11 19:21:35 +0800104void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
105 int trigger_mode);
Michael S. Tsirkina0c9a8222012-04-11 18:49:55 +0300106bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector);
Zhang Xiantao82470192007-12-17 13:59:56 +0800107int kvm_ioapic_init(struct kvm *kvm);
Wei Yongjun72bb2fc2010-02-09 10:33:03 +0800108void kvm_ioapic_destroy(struct kvm *kvm);
Michael S. Tsirkin1a577b72012-07-19 13:45:20 +0300109int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
Yang Zhangaa2fbe62013-04-11 19:21:40 +0800110 int level, bool line_status);
Michael S. Tsirkin1a577b72012-07-19 13:45:20 +0300111void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
Gleb Natapov58c2dde2009-03-05 16:35:04 +0200112int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
Yang Zhangb4f22252013-04-11 19:21:37 +0800113 struct kvm_lapic_irq *irq, unsigned long *dest_map);
Gleb Natapoveba02262009-08-24 11:54:25 +0300114int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
115int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
Yang Zhangcf9e65b2013-04-11 19:25:14 +0800116void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
117 u32 *tmr);
Gleb Natapoveba02262009-08-24 11:54:25 +0300118
Zhang Xiantao82470192007-12-17 13:59:56 +0800119#endif