/*
* IOAPIC emulation logic - common bits of emulated and KVM kernel model
*
* Copyright (c) 2004-2005 Fabrice Bellard
* Copyright (c) 2009 Xiantao Zhang, Intel
* Copyright (c) 2011 Jan Kiszka, Siemens AG
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*/
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qemu/module.h"
#include "migration/vmstate.h"
#include "monitor/monitor.h"
#include "hw/i386/ioapic.h"
#include "hw/i386/ioapic_internal.h"
#include "hw/intc/intc.h"
#include "hw/sysbus.h"
/* ioapic_no count start from 0 to MAX_IOAPICS,
* remove as static variable from ioapic_common_init.
* now as a global variable, let child to increase the counter
* then we can drop the 'instance_no' argument
* and convert to our QOM's realize function
*/
int ioapic_no;
void ioapic_stat_update_irq(IOAPICCommonState *s, int irq, int level)
{
if (level != s->irq_level[irq]) {
s->irq_level[irq] = level;
if (level == 1) {
s->irq_count[irq]++;
}
}
}
static bool ioapic_get_statistics(InterruptStatsProvider *obj,
uint64_t **irq_counts,
unsigned int *nb_irqs)
{
IOAPICCommonState *s = IOAPIC_COMMON(obj);
*irq_counts = s->irq_count;
*nb_irqs = IOAPIC_NUM_PINS;
return true;
}
static void ioapic_irr_dump(Monitor *mon, const char *name, uint32_t bitmap)
{
int i;
monitor_printf(mon, "%-10s ", name);
if (bitmap == 0) {
monitor_printf(mon, "(none)\n");
return;
}
for (i = 0; i < IOAPIC_NUM_PINS; i++) {
if (bitmap & (1 << i)) {
monitor_printf(mon, "%-2u ", i);
}
}
monitor_printf(mon, "\n");
}
void ioapic_print_redtbl(Monitor *mon, IOAPICCommonState *s)
{
static const char *delm_str[] = {
"fixed", "lowest", "SMI", "...", "NMI", "INIT", "...", "extINT"};
uint32_t remote_irr = 0;
int i;
monitor_printf(mon, "ioapic0: ver=0x%x id=0x%02x sel=0x%02x",
s->version, s->id, s->ioregsel);
if (s->ioregsel) {
monitor_printf(mon, " (redir[%u])\n",
(s->ioregsel - IOAPIC_REG_REDTBL_BASE) >> 1);
} else {
monitor_printf(mon, "\n");
}
for (i = 0; i < IOAPIC_NUM_PINS; i++) {
uint64_t entry = s->ioredtbl[i];
uint32_t delm = (uint32_t)((entry & IOAPIC_LVT_DELIV_MODE) >>
IOAPIC_LVT_DELIV_MODE_SHIFT);
monitor_printf(mon, " pin %-2u 0x%016"PRIx64" dest=%"PRIx64
" vec=%-3"PRIu64" %s %-5s %-6s %-6s %s\n",
i, entry,
(entry >> IOAPIC_LVT_DEST_SHIFT) &
(entry & IOAPIC_LVT_DEST_MODE ? 0xff : 0xf),
entry & IOAPIC_VECTOR_MASK,
entry & IOAPIC_LVT_POLARITY ? "active-lo" : "active-hi",
entry & IOAPIC_LVT_TRIGGER_MODE ? "level" : "edge",
entry & IOAPIC_LVT_MASKED ? "masked" : "",
delm_str[delm],
entry & IOAPIC_LVT_DEST_MODE ? "logical" : "physical");
remote_irr |= entry & IOAPIC_LVT_TRIGGER_MODE ?
(entry & IOAPIC_LVT_REMOTE_IRR ? (1 << i) : 0) : 0;
}
ioapic_irr_dump(mon, " IRR", s->irr);
ioapic_irr_dump(mon, " Remote IRR", remote_irr);
}
void ioapic_reset_common(DeviceState *dev)
{
IOAPICCommonState *s = IOAPIC_COMMON(dev);
int i;
s->id = 0;
s->ioregsel = 0;
s->irr = 0;
for (i = 0; i < IOAPIC_NUM_PINS; i++) {
s->ioredtbl[i] = 1 << IOAPIC_LVT_MASKED_SHIFT;
}
}
static int ioapic_dispatch_pre_save(void *opaque)
{
IOAPICCommonState *s = IOAPIC_COMMON(opaque);
IOAPICCommonClass *info = IOAPIC_COMMON_GET_CLASS(s);
if (info->pre_save) {
info->pre_save(s);
}
return 0;
}
static int ioapic_dispatch_post_load(void *opaque, int version_id)
{
IOAPICCommonState *s = IOAPIC_COMMON(opaque);
IOAPICCommonClass *info = IOAPIC_COMMON_GET_CLASS(s);
if (info->post_load) {
info->post_load(s);
}
return 0;
}
static void ioapic_common_realize(DeviceState *dev, Error **errp)
{
IOAPICCommonState *s = IOAPIC_COMMON(dev);
IOAPICCommonClass *info;
if (ioapic_no >= MAX_IOAPICS) {
error_setg(errp, "Only %d ioapics allowed", MAX_IOAPICS);
return;
}
info = IOAPIC_COMMON_GET_CLASS(s);
info->realize(dev, errp);
sysbus_init_mmio(SYS_BUS_DEVICE(s), &s->io_memory);
ioapic_no++;
}
static void ioapic_print_info(InterruptStatsProvider *obj,
Monitor *mon)
{
IOAPICCommonState *s = IOAPIC_COMMON(obj);
ioapic_dispatch_pre_save(s);
ioapic_print_redtbl(mon, s);
}
static const VMStateDescription vmstate_ioapic_common = {
.name = "ioapic",
.version_id = 3,
.minimum_version_id = 1,
.pre_save = ioapic_dispatch_pre_save,
.post_load = ioapic_dispatch_post_load,
.fields = (VMStateField[]) {
VMSTATE_UINT8(id, IOAPICCommonState),
VMSTATE_UINT8(ioregsel, IOAPICCommonState),
VMSTATE_UNUSED_V(2, 8), /* to account for qemu-kvm's v2 format */
VMSTATE_UINT32_V(irr, IOAPICCommonState, 2),
VMSTATE_UINT64_ARRAY(ioredtbl, IOAPICCommonState, IOAPIC_NUM_PINS),
VMSTATE_END_OF_LIST()
}
};
static void ioapic_common_class_init(ObjectClass *klass, void *data)
{
DeviceClass *dc = DEVICE_CLASS(klass);
InterruptStatsProviderClass *ic = INTERRUPT_STATS_PROVIDER_CLASS(klass);
dc->realize = ioapic_common_realize;
dc->vmsd = &vmstate_ioapic_common;
ic->print_info = ioapic_print_info;
ic->get_statistics = ioapic_get_statistics;
}
static const TypeInfo ioapic_common_type = {
.name = TYPE_IOAPIC_COMMON,
.parent = TYPE_SYS_BUS_DEVICE,
.instance_size = sizeof(IOAPICCommonState),
.class_size = sizeof(IOAPICCommonClass),
.class_init = ioapic_common_class_init,
.abstract = true,
.interfaces = (InterfaceInfo[]) {
{ TYPE_INTERRUPT_STATS_PROVIDER },
{ }
},
};
static void ioapic_common_register_types(void)
{
type_register_static(&ioapic_common_type);
}
type_init(ioapic_common_register_types)
