1 files changed, 71 insertions, 0 deletions
diff --git a/sys/amd64/vmm/vmm_lapic.h b/sys/amd64/vmm/vmm_lapic.h
new file mode 100644
index 0000000..a79912e
--- /dev/null
+++ b/sys/amd64/vmm/vmm_lapic.h
@@ -0,0 +1,71 @@
+/*-
+ * Copyright (c) 2011 NetApp, Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ */
+
+#ifndef _VMM_LAPIC_H_
+#define	_VMM_LAPIC_H_
+
+struct vm;
+
+boolean_t lapic_msr(u_int num);
+int	lapic_rdmsr(struct vm *vm, int cpu, u_int msr, uint64_t *rval);
+int	lapic_wrmsr(struct vm *vm, int cpu, u_int msr, uint64_t wval);
+
+int	lapic_mmio_read(void *vm, int cpu, uint64_t gpa,
+			uint64_t *rval, int size, void *arg);
+int	lapic_mmio_write(void *vm, int cpu, uint64_t gpa,
+			 uint64_t wval, int size, void *arg);
+
+int	lapic_timer_tick(struct vm *vm, int cpu);
+
+/*
+ * Returns a vector between 32 and 255 if an interrupt is pending in the
+ * IRR that can be delivered based on the current state of ISR and TPR.
+ *
+ * Note that the vector does not automatically transition to the ISR as a
+ * result of calling this function.
+ *
+ * Returns -1 if there is no eligible vector that can be delivered to the
+ * guest at this time.
+ */
+int	lapic_pending_intr(struct vm *vm, int cpu);
+
+/*
+ * Transition 'vector' from IRR to ISR. This function is called with the
+ * vector returned by 'lapic_pending_intr()' when the guest is able to
+ * accept this interrupt (i.e. RFLAGS.IF = 1 and no conditions exist that
+ * block interrupt delivery).
+ */
+void	lapic_intr_accepted(struct vm *vm, int cpu, int vector);
+
+/*
+ * Signals to the LAPIC that an interrupt at 'vector' needs to be generated
+ * to the 'cpu', the state is recorded in IRR.
+ */
+int	lapic_set_intr(struct vm *vm, int cpu, int vector);
+
+#endif