[mirror_ubuntu-bionic-kernel.git] / arch / x86 / kvm / ioapic.h

#ifndef __KVM_IO_APIC_H
#define __KVM_IO_APIC_H

#include <linux/kvm_host.h>

#include <kvm/iodev.h>

struct kvm;
struct kvm_vcpu;

#define IOAPIC_NUM_PINS  KVM_IOAPIC_NUM_PINS
#define IOAPIC_VERSION_ID 0x11	/* IOAPIC version */
#define IOAPIC_EDGE_TRIG  0
#define IOAPIC_LEVEL_TRIG 1

#define IOAPIC_DEFAULT_BASE_ADDRESS  0xfec00000
#define IOAPIC_MEM_LENGTH            0x100

/* Direct registers. */
#define IOAPIC_REG_SELECT  0x00
#define IOAPIC_REG_WINDOW  0x10

/* Indirect registers. */
#define IOAPIC_REG_APIC_ID 0x00	/* x86 IOAPIC only */
#define IOAPIC_REG_VERSION 0x01
#define IOAPIC_REG_ARB_ID  0x02	/* x86 IOAPIC only */

/*ioapic delivery mode*/
#define	IOAPIC_FIXED			0x0
#define	IOAPIC_LOWEST_PRIORITY		0x1
#define	IOAPIC_PMI			0x2
#define	IOAPIC_NMI			0x4
#define	IOAPIC_INIT			0x5
#define	IOAPIC_EXTINT			0x7

#ifdef CONFIG_X86
#define RTC_GSI 8
#else
#define RTC_GSI -1U
#endif

struct rtc_status {
	int pending_eoi;
	DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);
};

union kvm_ioapic_redirect_entry {
	u64 bits;
	struct {
		u8 vector;
		u8 delivery_mode:3;
		u8 dest_mode:1;
		u8 delivery_status:1;
		u8 polarity:1;
		u8 remote_irr:1;
		u8 trig_mode:1;
		u8 mask:1;
		u8 reserve:7;
		u8 reserved[4];
		u8 dest_id;
	} fields;
};

struct kvm_ioapic {
	u64 base_address;
	u32 ioregsel;
	u32 id;
	u32 irr;
	u32 pad;
	union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
	unsigned long irq_states[IOAPIC_NUM_PINS];
	struct kvm_io_device dev;
	struct kvm *kvm;
	void (*ack_notifier)(void *opaque, int irq);
	spinlock_t lock;
	DECLARE_BITMAP(handled_vectors, 256);
	struct rtc_status rtc_status;
	struct delayed_work eoi_inject;
	u32 irq_eoi[IOAPIC_NUM_PINS];
	u32 irr_delivered;
};

#ifdef DEBUG
#define ASSERT(x)  							\
do {									\
	if (!(x)) {							\
		printk(KERN_EMERG "assertion failed %s: %d: %s\n",	\
		       __FILE__, __LINE__, #x);				\
		BUG();							\
	}								\
} while (0)
#else
#define ASSERT(x) do { } while (0)
#endif

static inline struct kvm_ioapic *ioapic_irqchip(struct kvm *kvm)
{
	return kvm->arch.vioapic;
}

static inline bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector)
{
	struct kvm_ioapic *ioapic = kvm->arch.vioapic;
	smp_rmb();
	return test_bit(vector, ioapic->handled_vectors);
}

void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
bool kvm_apic_match_dest(struct kvm_vcpu *vcpu, struct kvm_lapic *source,
		int short_hand, unsigned int dest, int dest_mode);
int kvm_apic_compare_prio(struct kvm_vcpu *vcpu1, struct kvm_vcpu *vcpu2);
void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
			int trigger_mode);
int kvm_ioapic_init(struct kvm *kvm);
void kvm_ioapic_destroy(struct kvm *kvm);
int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
		       int level, bool line_status);
void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
int kvm_irq_delivery_to_apic(struct kvm *kvm, struct kvm_lapic *src,
		struct kvm_lapic_irq *irq, unsigned long *dest_map);
int kvm_get_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
int kvm_set_ioapic(struct kvm *kvm, struct kvm_ioapic_state *state);
void kvm_ioapic_scan_entry(struct kvm_vcpu *vcpu, u64 *eoi_exit_bitmap,
			u32 *tmr);

#endif
Commit	Line	Data
82470196 ZX	1	#ifndef __KVM_IO_APIC_H
	2	#define __KVM_IO_APIC_H
	3
	4	#include <linux/kvm_host.h>
	5
af669ac6	6	#include <kvm/iodev.h>
82470196 ZX	7
	8	struct kvm;
	9	struct 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
82470196 ZX	22
	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
8dc6aade YZ	36	#ifdef CONFIG_X86
	37	#define RTC_GSI 8
	38	#else
	39	#define RTC_GSI -1U
	40	#endif
	41
	42	struct rtc_status {
	43	int pending_eoi;
	44	DECLARE_BITMAP(dest_map, KVM_MAX_VCPUS);
	45	};
	46
cb5281a5 PB	47	union 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
82470196 ZX	64	struct kvm_ioapic {
	65	u64 base_address;
	66	u32 ioregsel;
	67	u32 id;
	68	u32 irr;
	69	u32 pad;
cf9e4e15	70	union kvm_ioapic_redirect_entry redirtbl[IOAPIC_NUM_PINS];
1a6e4a8c	71	unsigned long irq_states[IOAPIC_NUM_PINS];
82470196 ZX	72	struct kvm_io_device dev;
82470196 ZX	73	struct kvm *kvm;
f5244726	74	void (ack_notifier)(void opaque, int irq);
46a47b1e	75	spinlock_t lock;
46a929bc	76	DECLARE_BITMAP(handled_vectors, 256);
8dc6aade	77	struct rtc_status rtc_status;
184564ef ZH	78	struct delayed_work eoi_inject;
184564ef ZH	79	u32 irq_eoi[IOAPIC_NUM_PINS];
5bda6eed	80	u32 irr_delivered;
82470196 ZX	81	};
	82
	83	#ifdef DEBUG
	84	#define ASSERT(x) \
	85	do { \
	86	if (!(x)) { \
	87	printk(KERN_EMERG "assertion failed %s: %d: %s\n", \
	88	__FILE__, __LINE__, #x); \
	89	BUG(); \
	90	} \
	91	} while (0)
	92	#else
	93	#define ASSERT(x) do { } while (0)
	94	#endif
	95
	96	static inline struct kvm_ioapic ioapic_irqchip(struct kvm kvm)
	97	{
	98	return kvm->arch.vioapic;
	99	}
	100
a123374f RK	101	static inline bool kvm_ioapic_handles_vector(struct kvm *kvm, int vector)
	102	{
	103	struct kvm_ioapic *ioapic = kvm->arch.vioapic;
	104	smp_rmb();
	105	return test_bit(vector, ioapic->handled_vectors);
	106	}
	107
10606919	108	void kvm_rtc_eoi_tracking_restore_one(struct kvm_vcpu *vcpu);
52c233a4	109	bool kvm_apic_match_dest(struct kvm_vcpu vcpu, struct kvm_lapic source,
394457a9	110	int short_hand, unsigned int dest, int dest_mode);
e1035715	111	int kvm_apic_compare_prio(struct kvm_vcpu vcpu1, struct kvm_vcpu vcpu2);
1fcc7890 YZ	112	void kvm_ioapic_update_eoi(struct kvm_vcpu *vcpu, int vector,
1fcc7890 YZ	113	int trigger_mode);
82470196	114	int kvm_ioapic_init(struct kvm *kvm);
72bb2fcd	115	void kvm_ioapic_destroy(struct kvm *kvm);
1a577b72	116	int kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int irq_source_id,
aa2fbe6d	117	int level, bool line_status);
1a577b72	118	void kvm_ioapic_clear_all(struct kvm_ioapic *ioapic, int irq_source_id);
58c2dde1	119	int kvm_irq_delivery_to_apic(struct kvm kvm, struct kvm_lapic src,
b4f2225c	120	struct kvm_lapic_irq irq, unsigned long dest_map);
eba0226b GN	121	int kvm_get_ioapic(struct kvm kvm, struct kvm_ioapic_state state);
eba0226b GN	122	int kvm_set_ioapic(struct kvm kvm, struct kvm_ioapic_state state);
cf9e65b7 YZ	123	void kvm_ioapic_scan_entry(struct kvm_vcpu vcpu, u64 eoi_exit_bitmap,
cf9e65b7 YZ	124	u32 *tmr);
eba0226b	125
82470196	126	#endif