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- /*
- * 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 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)
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