2011-05-13 04:54:01 +00:00
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/*-
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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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/systm.h>
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2011-06-28 06:26:03 +00:00
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#include <sys/smp.h>
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2011-05-13 04:54:01 +00:00
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2012-09-21 03:09:23 +00:00
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#include <x86/specialreg.h>
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2012-11-28 00:02:17 +00:00
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#include <x86/apicreg.h>
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2012-09-21 03:09:23 +00:00
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2011-05-13 04:54:01 +00:00
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#include <machine/vmm.h>
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#include "vmm_ipi.h"
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#include "vmm_lapic.h"
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#include "vlapic.h"
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int
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lapic_pending_intr(struct vm *vm, int cpu)
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{
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struct vlapic *vlapic;
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vlapic = vm_lapic(vm, cpu);
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return (vlapic_pending_intr(vlapic));
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}
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void
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lapic_intr_accepted(struct vm *vm, int cpu, int vector)
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{
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struct vlapic *vlapic;
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vlapic = vm_lapic(vm, cpu);
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vlapic_intr_accepted(vlapic, vector);
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}
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int
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lapic_set_intr(struct vm *vm, int cpu, int vector)
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{
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struct vlapic *vlapic;
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if (cpu < 0 || cpu >= VM_MAXCPU)
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return (EINVAL);
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if (vector < 32 || vector > 255)
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return (EINVAL);
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vlapic = vm_lapic(vm, cpu);
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vlapic_set_intr_ready(vlapic, vector);
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vm_interrupt_hostcpu(vm, cpu);
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return (0);
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}
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2012-10-20 08:23:05 +00:00
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int
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2011-05-13 04:54:01 +00:00
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lapic_timer_tick(struct vm *vm, int cpu)
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{
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struct vlapic *vlapic;
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vlapic = vm_lapic(vm, cpu);
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2012-10-20 08:23:05 +00:00
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return (vlapic_timer_tick(vlapic));
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2011-05-13 04:54:01 +00:00
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}
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2012-09-21 03:09:23 +00:00
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static boolean_t
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x2apic_msr(u_int msr)
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{
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if (msr >= 0x800 && msr <= 0xBFF)
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return (TRUE);
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else
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return (FALSE);
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}
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static u_int
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x2apic_msr_to_regoff(u_int msr)
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{
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return ((msr - 0x800) << 4);
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}
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boolean_t
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lapic_msr(u_int msr)
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{
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if (x2apic_msr(msr) || (msr == MSR_APICBASE))
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return (TRUE);
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else
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return (FALSE);
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}
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int
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lapic_rdmsr(struct vm *vm, int cpu, u_int msr, uint64_t *rval)
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{
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2012-11-28 13:10:18 +00:00
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int error;
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u_int offset;
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2012-09-21 03:09:23 +00:00
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struct vlapic *vlapic;
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vlapic = vm_lapic(vm, cpu);
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if (msr == MSR_APICBASE) {
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*rval = vlapic_get_apicbase(vlapic);
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2012-11-28 13:10:18 +00:00
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error = 0;
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} else {
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offset = x2apic_msr_to_regoff(msr);
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error = vlapic_op_mem_read(vlapic, offset, DWORD, rval);
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}
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2012-09-21 03:09:23 +00:00
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2012-11-28 13:10:18 +00:00
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return (error);
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2012-09-21 03:09:23 +00:00
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}
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int
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lapic_wrmsr(struct vm *vm, int cpu, u_int msr, uint64_t val)
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{
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2012-11-28 13:10:18 +00:00
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int error;
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u_int offset;
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2012-09-21 03:09:23 +00:00
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struct vlapic *vlapic;
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vlapic = vm_lapic(vm, cpu);
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if (msr == MSR_APICBASE) {
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vlapic_set_apicbase(vlapic, val);
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2012-11-28 13:10:18 +00:00
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error = 0;
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} else {
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offset = x2apic_msr_to_regoff(msr);
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error = vlapic_op_mem_write(vlapic, offset, DWORD, val);
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}
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2012-09-21 03:09:23 +00:00
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2012-11-28 13:10:18 +00:00
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return (error);
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2012-09-21 03:09:23 +00:00
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}
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2012-09-25 22:31:35 +00:00
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int
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2012-11-28 00:02:17 +00:00
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lapic_mmio_write(void *vm, int cpu, uint64_t gpa, uint64_t wval, int size,
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void *arg)
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2012-09-25 22:31:35 +00:00
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{
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2012-11-28 00:02:17 +00:00
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int error;
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uint64_t off;
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2012-09-25 22:31:35 +00:00
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struct vlapic *vlapic;
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2012-11-28 00:02:17 +00:00
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off = gpa - DEFAULT_APIC_BASE;
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/*
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* Memory mapped local apic accesses must be 4 bytes wide and
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* aligned on a 16-byte boundary.
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*/
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if (size != 4 || off & 0xf)
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return (EINVAL);
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2012-09-25 22:31:35 +00:00
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vlapic = vm_lapic(vm, cpu);
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2012-11-28 00:02:17 +00:00
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error = vlapic_op_mem_write(vlapic, off, DWORD, wval);
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return (error);
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}
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int
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lapic_mmio_read(void *vm, int cpu, uint64_t gpa, uint64_t *rval, int size,
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void *arg)
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{
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int error;
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uint64_t off;
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struct vlapic *vlapic;
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2012-09-25 22:31:35 +00:00
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2012-11-28 00:02:17 +00:00
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off = gpa - DEFAULT_APIC_BASE;
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2012-09-25 22:31:35 +00:00
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/*
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2012-11-28 00:02:17 +00:00
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* Memory mapped local apic accesses must be 4 bytes wide and
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* aligned on a 16-byte boundary.
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2012-09-25 22:31:35 +00:00
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*/
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2012-11-28 00:02:17 +00:00
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if (size != 4 || off & 0xf)
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return (EINVAL);
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2012-09-25 22:31:35 +00:00
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2012-11-28 00:02:17 +00:00
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vlapic = vm_lapic(vm, cpu);
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error = vlapic_op_mem_read(vlapic, off, DWORD, rval);
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return (error);
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2012-09-25 22:31:35 +00:00
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}
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