Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 1 | /* |
| 2 | * irq.h: in kernel interrupt controller related definitions |
| 3 | * Copyright (c) 2007, Intel Corporation. |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms and conditions of the GNU General Public License, |
| 7 | * version 2, as published by the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
| 16 | * Place - Suite 330, Boston, MA 02111-1307 USA. |
| 17 | * Authors: |
| 18 | * Yaozu (Eddie) Dong <Eddie.dong@intel.com> |
| 19 | * |
| 20 | */ |
| 21 | |
| 22 | #ifndef __IRQ_H |
| 23 | #define __IRQ_H |
| 24 | |
Hollis Blanchard | e01a1b5 | 2007-12-03 15:30:25 -0600 | [diff] [blame] | 25 | #include <linux/mm_types.h> |
| 26 | #include <linux/hrtimer.h> |
Avi Kivity | edf8841 | 2007-12-16 11:02:48 +0200 | [diff] [blame] | 27 | #include <linux/kvm_host.h> |
Zhang Xiantao | 8247019 | 2007-12-17 13:59:56 +0800 | [diff] [blame] | 28 | |
Hollis Blanchard | e217402 | 2007-12-03 15:30:24 -0600 | [diff] [blame] | 29 | #include "iodev.h" |
Zhang Xiantao | 8247019 | 2007-12-17 13:59:56 +0800 | [diff] [blame] | 30 | #include "ioapic.h" |
| 31 | #include "lapic.h" |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 32 | |
Hollis Blanchard | e01a1b5 | 2007-12-03 15:30:25 -0600 | [diff] [blame] | 33 | struct kvm; |
| 34 | struct kvm_vcpu; |
| 35 | |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 36 | typedef void irq_request_func(void *opaque, int level); |
| 37 | |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 38 | struct kvm_kpic_state { |
| 39 | u8 last_irr; /* edge detection */ |
| 40 | u8 irr; /* interrupt request register */ |
| 41 | u8 imr; /* interrupt mask register */ |
| 42 | u8 isr; /* interrupt service register */ |
| 43 | u8 priority_add; /* highest irq priority */ |
| 44 | u8 irq_base; |
| 45 | u8 read_reg_select; |
| 46 | u8 poll; |
| 47 | u8 special_mask; |
| 48 | u8 init_state; |
| 49 | u8 auto_eoi; |
| 50 | u8 rotate_on_auto_eoi; |
| 51 | u8 special_fully_nested_mode; |
| 52 | u8 init4; /* true if 4 byte init */ |
| 53 | u8 elcr; /* PIIX edge/trigger selection */ |
| 54 | u8 elcr_mask; |
| 55 | struct kvm_pic *pics_state; |
| 56 | }; |
| 57 | |
| 58 | struct kvm_pic { |
| 59 | struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */ |
| 60 | irq_request_func *irq_request; |
| 61 | void *irq_request_opaque; |
| 62 | int output; /* intr from master PIC */ |
| 63 | struct kvm_io_device dev; |
| 64 | }; |
| 65 | |
| 66 | struct kvm_pic *kvm_create_pic(struct kvm *kvm); |
| 67 | void kvm_pic_set_irq(void *opaque, int irq, int level); |
| 68 | int kvm_pic_read_irq(struct kvm_pic *s); |
He, Qing | 6ceb9d7 | 2007-07-26 11:05:18 +0300 | [diff] [blame] | 69 | void kvm_pic_update_irq(struct kvm_pic *s); |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 70 | |
Zhang Xiantao | 682c59a | 2007-12-11 20:36:00 +0800 | [diff] [blame] | 71 | static inline struct kvm_pic *pic_irqchip(struct kvm *kvm) |
| 72 | { |
Zhang Xiantao | d7deeeb0 | 2007-12-14 10:17:34 +0800 | [diff] [blame] | 73 | return kvm->arch.vpic; |
Zhang Xiantao | 682c59a | 2007-12-11 20:36:00 +0800 | [diff] [blame] | 74 | } |
| 75 | |
Zhang Xiantao | 682c59a | 2007-12-11 20:36:00 +0800 | [diff] [blame] | 76 | static inline int irqchip_in_kernel(struct kvm *kvm) |
| 77 | { |
| 78 | return pic_irqchip(kvm) != NULL; |
| 79 | } |
| 80 | |
Eddie Dong | 2fcceae | 2007-10-10 12:14:25 +0200 | [diff] [blame] | 81 | void kvm_pic_reset(struct kvm_kpic_state *s); |
Zhang Xiantao | 8be5453 | 2007-12-02 22:35:57 +0800 | [diff] [blame] | 82 | |
Eddie Dong | 1b9778d | 2007-09-03 16:56:58 +0300 | [diff] [blame] | 83 | void kvm_timer_intr_post(struct kvm_vcpu *vcpu, int vec); |
| 84 | void kvm_inject_pending_timer_irqs(struct kvm_vcpu *vcpu); |
| 85 | void kvm_inject_apic_timer_irqs(struct kvm_vcpu *vcpu); |
Avi Kivity | 2f52d58 | 2008-01-16 12:49:30 +0200 | [diff] [blame] | 86 | void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu); |
Marcelo Tosatti | 2f59971 | 2008-05-27 12:10:20 -0300 | [diff] [blame] | 87 | void __kvm_migrate_pit_timer(struct kvm_vcpu *vcpu); |
| 88 | void __kvm_migrate_timers(struct kvm_vcpu *vcpu); |
Eddie Dong | 97222cc | 2007-09-12 10:58:04 +0300 | [diff] [blame] | 89 | |
Marcelo Tosatti | 3d80840 | 2008-04-11 14:53:26 -0300 | [diff] [blame] | 90 | int pit_has_pending_timer(struct kvm_vcpu *vcpu); |
| 91 | int apic_has_pending_timer(struct kvm_vcpu *vcpu); |
| 92 | |
Eddie Dong | 85f455f | 2007-07-06 12:20:49 +0300 | [diff] [blame] | 93 | #endif |