diff options
| author | Eddie Dong <eddie.dong@intel.com> | 2007-07-06 13:20:49 +0400 |
|---|---|---|
| committer | Avi Kivity <avi@qumranet.com> | 2007-10-13 12:18:24 +0400 |
| commit | 85f455f7ddbed403b34b4d54b1eaf0e14126a126 (patch) | |
| tree | 1dba7aa8fee3c8f756e12049c496dee5baae752c /drivers/kvm/irq.h | |
| parent | 152d3f2f246ce3c2a0cf2fc6c2214663cd99aa83 (diff) | |
| download | linux-85f455f7ddbed403b34b4d54b1eaf0e14126a126.tar.xz | |
KVM: Add support for in-kernel PIC emulation
Signed-off-by: Yaozu (Eddie) Dong <eddie.dong@intel.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>
Diffstat (limited to 'drivers/kvm/irq.h')
| -rw-r--r-- | drivers/kvm/irq.h | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/kvm/irq.h b/drivers/kvm/irq.h new file mode 100644 index 000000000000..bdb2fc34804b --- /dev/null +++ b/drivers/kvm/irq.h @@ -0,0 +1,64 @@ +/* + * 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_pic; +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); + +#endif |