aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--Makefile.target2
-rw-r--r--hw/kvm/ioapic.c114
-rw-r--r--hw/pc_piix.c15
3 files changed, 129 insertions, 2 deletions
diff --git a/Makefile.target b/Makefile.target
index 701073d15..98cb997ab 100644
--- a/Makefile.target
+++ b/Makefile.target
@@ -233,7 +233,7 @@ obj-i386-y += vmport.o
obj-i386-y += pci-hotplug.o smbios.o wdt_ib700.o
obj-i386-y += debugcon.o multiboot.o
obj-i386-y += pc_piix.o
-obj-i386-$(CONFIG_KVM) += kvm/clock.o kvm/apic.o kvm/i8259.o
+obj-i386-$(CONFIG_KVM) += kvm/clock.o kvm/apic.o kvm/i8259.o kvm/ioapic.o
obj-i386-$(CONFIG_SPICE) += qxl.o qxl-logger.o qxl-render.o
# shared objects
diff --git a/hw/kvm/ioapic.c b/hw/kvm/ioapic.c
new file mode 100644
index 000000000..10ffdd4b2
--- /dev/null
+++ b/hw/kvm/ioapic.c
@@ -0,0 +1,114 @@
+/*
+ * KVM in-kernel IOPIC support
+ *
+ * Copyright (c) 2011 Siemens AG
+ *
+ * Authors:
+ * Jan Kiszka <jan.kiszka@siemens.com>
+ *
+ * This work is licensed under the terms of the GNU GPL version 2.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "hw/pc.h"
+#include "hw/ioapic_internal.h"
+#include "hw/apic_internal.h"
+#include "kvm.h"
+
+typedef struct KVMIOAPICState KVMIOAPICState;
+
+struct KVMIOAPICState {
+ IOAPICCommonState ioapic;
+ uint32_t kvm_gsi_base;
+};
+
+static void kvm_ioapic_get(IOAPICCommonState *s)
+{
+ struct kvm_irqchip chip;
+ struct kvm_ioapic_state *kioapic;
+ int ret, i;
+
+ chip.chip_id = KVM_IRQCHIP_IOAPIC;
+ ret = kvm_vm_ioctl(kvm_state, KVM_GET_IRQCHIP, &chip);
+ if (ret < 0) {
+ fprintf(stderr, "KVM_GET_IRQCHIP failed: %s\n", strerror(ret));
+ abort();
+ }
+
+ kioapic = &chip.chip.ioapic;
+
+ s->id = kioapic->id;
+ s->ioregsel = kioapic->ioregsel;
+ s->irr = kioapic->irr;
+ for (i = 0; i < IOAPIC_NUM_PINS; i++) {
+ s->ioredtbl[i] = kioapic->redirtbl[i].bits;
+ }
+}
+
+static void kvm_ioapic_put(IOAPICCommonState *s)
+{
+ struct kvm_irqchip chip;
+ struct kvm_ioapic_state *kioapic;
+ int ret, i;
+
+ chip.chip_id = KVM_IRQCHIP_IOAPIC;
+ kioapic = &chip.chip.ioapic;
+
+ kioapic->id = s->id;
+ kioapic->ioregsel = s->ioregsel;
+ kioapic->base_address = s->busdev.mmio[0].addr;
+ kioapic->irr = s->irr;
+ for (i = 0; i < IOAPIC_NUM_PINS; i++) {
+ kioapic->redirtbl[i].bits = s->ioredtbl[i];
+ }
+
+ ret = kvm_vm_ioctl(kvm_state, KVM_SET_IRQCHIP, &chip);
+ if (ret < 0) {
+ fprintf(stderr, "KVM_GET_IRQCHIP failed: %s\n", strerror(ret));
+ abort();
+ }
+}
+
+static void kvm_ioapic_reset(DeviceState *dev)
+{
+ IOAPICCommonState *s = DO_UPCAST(IOAPICCommonState, busdev.qdev, dev);
+
+ ioapic_reset_common(dev);
+ kvm_ioapic_put(s);
+}
+
+static void kvm_ioapic_set_irq(void *opaque, int irq, int level)
+{
+ KVMIOAPICState *s = opaque;
+ int delivered;
+
+ delivered = kvm_irqchip_set_irq(kvm_state, s->kvm_gsi_base + irq, level);
+ apic_report_irq_delivered(delivered);
+}
+
+static void kvm_ioapic_init(IOAPICCommonState *s, int instance_no)
+{
+ memory_region_init_reservation(&s->io_memory, "kvm-ioapic", 0x1000);
+
+ qdev_init_gpio_in(&s->busdev.qdev, kvm_ioapic_set_irq, IOAPIC_NUM_PINS);
+}
+
+static IOAPICCommonInfo kvm_ioapic_info = {
+ .busdev.qdev.name = "kvm-ioapic",
+ .busdev.qdev.size = sizeof(KVMIOAPICState),
+ .busdev.qdev.reset = kvm_ioapic_reset,
+ .busdev.qdev.props = (Property[]) {
+ DEFINE_PROP_UINT32("gsi_base", KVMIOAPICState, kvm_gsi_base, 0),
+ DEFINE_PROP_END_OF_LIST()
+ },
+ .init = kvm_ioapic_init,
+ .pre_save = kvm_ioapic_get,
+ .post_load = kvm_ioapic_put,
+};
+
+static void kvm_ioapic_register_device(void)
+{
+ ioapic_qdev_register(&kvm_ioapic_info);
+}
+
+device_init(kvm_ioapic_register_device)
diff --git a/hw/pc_piix.c b/hw/pc_piix.c
index 297c04a9a..a285ad25f 100644
--- a/hw/pc_piix.c
+++ b/hw/pc_piix.c
@@ -69,6 +69,15 @@ static void kvm_piix3_setup_irq_routing(bool pci_enabled)
for (i = 8; i < 16; ++i) {
kvm_irqchip_add_route(s, i, KVM_IRQCHIP_PIC_SLAVE, i - 8);
}
+ if (pci_enabled) {
+ for (i = 0; i < 24; ++i) {
+ if (i == 0) {
+ kvm_irqchip_add_route(s, i, KVM_IRQCHIP_IOAPIC, 2);
+ } else if (i != 2) {
+ kvm_irqchip_add_route(s, i, KVM_IRQCHIP_IOAPIC, i);
+ }
+ }
+ }
ret = kvm_irqchip_commit_routes(s);
if (ret < 0) {
hw_error("KVM IRQ routing setup failed");
@@ -95,7 +104,11 @@ static void ioapic_init(GSIState *gsi_state)
SysBusDevice *d;
unsigned int i;
- dev = qdev_create(NULL, "ioapic");
+ if (kvm_enabled() && kvm_irqchip_in_kernel()) {
+ dev = qdev_create(NULL, "kvm-ioapic");
+ } else {
+ dev = qdev_create(NULL, "ioapic");
+ }
qdev_init_nofail(dev);
d = sysbus_from_qdev(dev);
sysbus_mmio_map(d, 0, 0xfec00000);