forked from Minki/linux
6bf9e962d1
This patch adds support for in-kernel ioapic save and restore (to and from userspace). It uses the same get/set_irqchip ioctl as in-kernel PIC. Signed-off-by: Qing He <qing.he@intel.com> Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com> Signed-off-by: Avi Kivity <avi@qumranet.com>
156 lines
4.4 KiB
C
156 lines
4.4 KiB
C
/*
|
|
* irq.h: in kernel interrupt controller related definitions
|
|
* Copyright (c) 2007, Intel Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License along with
|
|
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
|
|
* Place - Suite 330, Boston, MA 02111-1307 USA.
|
|
* Authors:
|
|
* Yaozu (Eddie) Dong <Eddie.dong@intel.com>
|
|
*
|
|
*/
|
|
|
|
#ifndef __IRQ_H
|
|
#define __IRQ_H
|
|
|
|
#include "kvm.h"
|
|
|
|
typedef void irq_request_func(void *opaque, int level);
|
|
|
|
struct kvm_kpic_state {
|
|
u8 last_irr; /* edge detection */
|
|
u8 irr; /* interrupt request register */
|
|
u8 imr; /* interrupt mask register */
|
|
u8 isr; /* interrupt service register */
|
|
u8 priority_add; /* highest irq priority */
|
|
u8 irq_base;
|
|
u8 read_reg_select;
|
|
u8 poll;
|
|
u8 special_mask;
|
|
u8 init_state;
|
|
u8 auto_eoi;
|
|
u8 rotate_on_auto_eoi;
|
|
u8 special_fully_nested_mode;
|
|
u8 init4; /* true if 4 byte init */
|
|
u8 elcr; /* PIIX edge/trigger selection */
|
|
u8 elcr_mask;
|
|
struct kvm_pic *pics_state;
|
|
};
|
|
|
|
struct kvm_pic {
|
|
struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */
|
|
irq_request_func *irq_request;
|
|
void *irq_request_opaque;
|
|
int output; /* intr from master PIC */
|
|
struct kvm_io_device dev;
|
|
};
|
|
|
|
struct kvm_pic *kvm_create_pic(struct kvm *kvm);
|
|
void kvm_pic_set_irq(void *opaque, int irq, int level);
|
|
int kvm_pic_read_irq(struct kvm_pic *s);
|
|
int kvm_cpu_get_interrupt(struct kvm_vcpu *v);
|
|
int kvm_cpu_has_interrupt(struct kvm_vcpu *v);
|
|
void kvm_pic_update_irq(struct kvm_pic *s);
|
|
|
|
#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
|
|
#define IOAPIC_REG_EOI 0x40 /* IA64 IOSAPIC only */
|
|
|
|
/* 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 */
|
|
|
|
struct kvm_ioapic {
|
|
u64 base_address;
|
|
u32 ioregsel;
|
|
u32 id;
|
|
u32 irr;
|
|
u32 pad;
|
|
union ioapic_redir_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;
|
|
} redirtbl[IOAPIC_NUM_PINS];
|
|
struct kvm_io_device dev;
|
|
struct kvm *kvm;
|
|
};
|
|
|
|
struct kvm_lapic {
|
|
unsigned long base_address;
|
|
struct kvm_io_device dev;
|
|
struct {
|
|
atomic_t pending;
|
|
s64 period; /* unit: ns */
|
|
u32 divide_count;
|
|
ktime_t last_update;
|
|
struct hrtimer dev;
|
|
} timer;
|
|
struct kvm_vcpu *vcpu;
|
|
struct page *regs_page;
|
|
void *regs;
|
|
};
|
|
|
|
#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
|
|
|
|
void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
|
|
int kvm_apic_has_interrupt(struct kvm_vcpu *vcpu);
|
|
int kvm_get_apic_interrupt(struct kvm_vcpu *vcpu);
|
|
int kvm_create_lapic(struct kvm_vcpu *vcpu);
|
|
void kvm_free_apic(struct kvm_lapic *apic);
|
|
u64 kvm_lapic_get_cr8(struct kvm_vcpu *vcpu);
|
|
void kvm_lapic_set_tpr(struct kvm_vcpu *vcpu, unsigned long cr8);
|
|
void kvm_lapic_set_base(struct kvm_vcpu *vcpu, u64 value);
|
|
struct kvm_lapic *kvm_apic_round_robin(struct kvm *kvm, u8 vector,
|
|
unsigned long bitmap);
|
|
u64 kvm_get_apic_base(struct kvm_vcpu *vcpu);
|
|
void kvm_set_apic_base(struct kvm_vcpu *vcpu, u64 data);
|
|
int kvm_apic_match_physical_addr(struct kvm_lapic *apic, u16 dest);
|
|
void kvm_ioapic_update_eoi(struct kvm *kvm, int vector);
|
|
int kvm_apic_match_logical_addr(struct kvm_lapic *apic, u8 mda);
|
|
int kvm_apic_set_irq(struct kvm_lapic *apic, u8 vec, u8 trig);
|
|
int kvm_ioapic_init(struct kvm *kvm);
|
|
void kvm_ioapic_set_irq(struct kvm_ioapic *ioapic, int irq, int level);
|
|
|
|
#endif
|