| 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 | |
| 25 | #include "kvm.h" |
| 26 | |
| 27 | typedef void irq_request_func(void *opaque, int level); |
| 28 | |
| 29 | struct kvm_pic; |
| 30 | struct kvm_kpic_state { |
| 31 | u8 last_irr; /* edge detection */ |
| 32 | u8 irr; /* interrupt request register */ |
| 33 | u8 imr; /* interrupt mask register */ |
| 34 | u8 isr; /* interrupt service register */ |
| 35 | u8 priority_add; /* highest irq priority */ |
| 36 | u8 irq_base; |
| 37 | u8 read_reg_select; |
| 38 | u8 poll; |
| 39 | u8 special_mask; |
| 40 | u8 init_state; |
| 41 | u8 auto_eoi; |
| 42 | u8 rotate_on_auto_eoi; |
| 43 | u8 special_fully_nested_mode; |
| 44 | u8 init4; /* true if 4 byte init */ |
| 45 | u8 elcr; /* PIIX edge/trigger selection */ |
| 46 | u8 elcr_mask; |
| 47 | struct kvm_pic *pics_state; |
| 48 | }; |
| 49 | |
| 50 | struct kvm_pic { |
| 51 | struct kvm_kpic_state pics[2]; /* 0 is master pic, 1 is slave pic */ |
| 52 | irq_request_func *irq_request; |
| 53 | void *irq_request_opaque; |
| 54 | int output; /* intr from master PIC */ |
| 55 | struct kvm_io_device dev; |
| 56 | }; |
| 57 | |
| 58 | struct kvm_pic *kvm_create_pic(struct kvm *kvm); |
| 59 | void kvm_pic_set_irq(void *opaque, int irq, int level); |
| 60 | int kvm_pic_read_irq(struct kvm_pic *s); |
| 61 | int kvm_cpu_get_interrupt(struct kvm_vcpu *v); |
| 62 | int kvm_cpu_has_interrupt(struct kvm_vcpu *v); |
| 63 | |
| 64 | #endif |