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emulation. The vlapic initialization and cleanup is done via processor specific vmm_ops. This will allow the VT-x/SVM modules to layer any hardware-assist for APIC emulation or virtual interrupt delivery on top of the vlapic device model. Add a parameter to 'vcpu_notify_event()' to distinguish between vlapic interrupts versus other events (e.g. NMI). This provides an opportunity to use hardware-assists like Posted Interrupts (VT-x) or doorbell MSR (SVM) to deliver an interrupt to a guest without causing a VM-exit. Get rid of lapic_pending_intr() and lapic_intr_accepted() and use the vlapic_xxx() counterparts directly. Associate an 'Apic Page' with each vcpu and reference it from the 'vlapic'. The 'Apic Page' is intended to be referenced from the Intel VMCS as the 'virtual APIC page' or from the AMD VMCB as the 'vAPIC backing page'.
76 lines
2.6 KiB
C
76 lines
2.6 KiB
C
/*-
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* Copyright (c) 2011 NetApp, Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY NETAPP, INC ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL NETAPP, INC OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _VMM_LAPIC_H_
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#define _VMM_LAPIC_H_
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struct vm;
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boolean_t lapic_msr(u_int num);
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int lapic_rdmsr(struct vm *vm, int cpu, u_int msr, uint64_t *rval,
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bool *retu);
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int lapic_wrmsr(struct vm *vm, int cpu, u_int msr, uint64_t wval,
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bool *retu);
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int lapic_mmio_read(void *vm, int cpu, uint64_t gpa,
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uint64_t *rval, int size, void *arg);
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int lapic_mmio_write(void *vm, int cpu, uint64_t gpa,
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uint64_t wval, int size, void *arg);
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/*
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* Signals to the LAPIC that an interrupt at 'vector' needs to be generated
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* to the 'cpu', the state is recorded in IRR.
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*/
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int lapic_set_intr(struct vm *vm, int cpu, int vector, bool trig);
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#define LAPIC_TRIG_LEVEL true
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#define LAPIC_TRIG_EDGE false
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static __inline int
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lapic_intr_level(struct vm *vm, int cpu, int vector)
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{
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return (lapic_set_intr(vm, cpu, vector, LAPIC_TRIG_LEVEL));
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}
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static __inline int
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lapic_intr_edge(struct vm *vm, int cpu, int vector)
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{
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return (lapic_set_intr(vm, cpu, vector, LAPIC_TRIG_EDGE));
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}
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/*
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* Triggers the LAPIC local interrupt (LVT) 'vector' on 'cpu'. 'cpu' can
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* be set to -1 to trigger the interrupt on all CPUs.
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*/
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int lapic_set_local_intr(struct vm *vm, int cpu, int vector);
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int lapic_intr_msi(struct vm *vm, uint64_t addr, uint64_t msg);
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#endif
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