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authorEddie Dong <eddie.dong@intel.com>2007-07-06 12:20:49 +0300
committerAvi Kivity <avi@qumranet.com>2007-10-13 10:18:24 +0200
commit85f455f7ddbed403b34b4d54b1eaf0e14126a126 (patch)
tree1dba7aa8fee3c8f756e12049c496dee5baae752c /drivers/kvm/irq.h
parent152d3f2f246ce3c2a0cf2fc6c2214663cd99aa83 (diff)
downloadop-kernel-dev-85f455f7ddbed403b34b4d54b1eaf0e14126a126.zip
op-kernel-dev-85f455f7ddbed403b34b4d54b1eaf0e14126a126.tar.gz
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.h64
1 files changed, 64 insertions, 0 deletions
diff --git a/drivers/kvm/irq.h b/drivers/kvm/irq.h
new file mode 100644
index 0000000..bdb2fc3
--- /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
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