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/*-
* 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.
*
* $FreeBSD$
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/smp.h>
#include <x86/specialreg.h>
#include <x86/apicreg.h>
#include <machine/vmm.h>
#include "vmm_ipi.h"
#include "vmm_lapic.h"
#include "vlapic.h"
int
lapic_pending_intr(struct vm *vm, int cpu)
{
struct vlapic *vlapic;
vlapic = vm_lapic(vm, cpu);
return (vlapic_pending_intr(vlapic));
}
void
lapic_intr_accepted(struct vm *vm, int cpu, int vector)
{
struct vlapic *vlapic;
vlapic = vm_lapic(vm, cpu);
vlapic_intr_accepted(vlapic, vector);
}
int
lapic_set_intr(struct vm *vm, int cpu, int vector)
{
struct vlapic *vlapic;
if (cpu < 0 || cpu >= VM_MAXCPU)
return (EINVAL);
if (vector < 32 || vector > 255)
return (EINVAL);
vlapic = vm_lapic(vm, cpu);
vlapic_set_intr_ready(vlapic, vector);
vm_interrupt_hostcpu(vm, cpu);
return (0);
}
int
lapic_timer_tick(struct vm *vm, int cpu)
{
struct vlapic *vlapic;
vlapic = vm_lapic(vm, cpu);
return (vlapic_timer_tick(vlapic));
}
static boolean_t
x2apic_msr(u_int msr)
{
if (msr >= 0x800 && msr <= 0xBFF)
return (TRUE);
else
return (FALSE);
}
static u_int
x2apic_msr_to_regoff(u_int msr)
{
return ((msr - 0x800) << 4);
}
boolean_t
lapic_msr(u_int msr)
{
if (x2apic_msr(msr) || (msr == MSR_APICBASE))
return (TRUE);
else
return (FALSE);
}
int
lapic_rdmsr(struct vm *vm, int cpu, u_int msr, uint64_t *rval)
{
int error;
u_int offset;
struct vlapic *vlapic;
vlapic = vm_lapic(vm, cpu);
if (msr == MSR_APICBASE) {
*rval = vlapic_get_apicbase(vlapic);
error = 0;
} else {
offset = x2apic_msr_to_regoff(msr);
error = vlapic_op_mem_read(vlapic, offset, DWORD, rval);
}
return (error);
}
int
lapic_wrmsr(struct vm *vm, int cpu, u_int msr, uint64_t val)
{
int error;
u_int offset;
struct vlapic *vlapic;
vlapic = vm_lapic(vm, cpu);
if (msr == MSR_APICBASE) {
vlapic_set_apicbase(vlapic, val);
error = 0;
} else {
offset = x2apic_msr_to_regoff(msr);
error = vlapic_op_mem_write(vlapic, offset, DWORD, val);
}
return (error);
}
int
lapic_mmio_write(void *vm, int cpu, uint64_t gpa, uint64_t wval, int size,
void *arg)
{
int error;
uint64_t off;
struct vlapic *vlapic;
off = gpa - DEFAULT_APIC_BASE;
/*
* Memory mapped local apic accesses must be 4 bytes wide and
* aligned on a 16-byte boundary.
*/
if (size != 4 || off & 0xf)
return (EINVAL);
vlapic = vm_lapic(vm, cpu);
error = vlapic_op_mem_write(vlapic, off, DWORD, wval);
return (error);
}
int
lapic_mmio_read(void *vm, int cpu, uint64_t gpa, uint64_t *rval, int size,
void *arg)
{
int error;
uint64_t off;
struct vlapic *vlapic;
off = gpa - DEFAULT_APIC_BASE;
/*
* Memory mapped local apic accesses must be 4 bytes wide and
* aligned on a 16-byte boundary.
*/
if (size != 4 || off & 0xf)
return (EINVAL);
vlapic = vm_lapic(vm, cpu);
error = vlapic_op_mem_read(vlapic, off, DWORD, rval);
return (error);
}
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