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[Qemu-devel] [PATCH 15/22] introduce ICC bus/device/bridge
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [PATCH 15/22] introduce ICC bus/device/bridge |
Date: |
Fri, 5 Apr 2013 16:37:07 +0200 |
... to provide hotplug-able bus.
* icc-bridge will serve as a parent for icc-bus, provide
mmio mapping services to child icc-device and create
IOAPIC when requested.
* icc-device will replace SysBusDevice as a parent of APIC
and IOAPIC devices.
Signed-off-by: Igor Mammedov <address@hidden>
---
hw/i386/Makefile.objs | 2 +-
hw/i386/pc_piix.c | 7 +++++
hw/i386/pc_q35.c | 7 +++++
hw/icc_bus.c | 85 +++++++++++++++++++++++++++++++++++++++++++++++++++
hw/icc_bus.h | 51 +++++++++++++++++++++++++++++++
5 files changed, 151 insertions(+), 1 deletion(-)
create mode 100644 hw/icc_bus.c
create mode 100644 hw/icc_bus.h
diff --git a/hw/i386/Makefile.objs b/hw/i386/Makefile.objs
index a78c0b2..316f999 100644
--- a/hw/i386/Makefile.objs
+++ b/hw/i386/Makefile.objs
@@ -1,5 +1,5 @@
obj-y += mc146818rtc.o
-obj-y += apic_common.o apic.o
+obj-y += apic_common.o apic.o icc_bus.o
obj-y += sga.o ioapic_common.o ioapic.o piix_pci.o
obj-y += vmport.o
obj-y += pci/pci-hotplug.o wdt_ib700.o
diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c
index 0abc9f1..8bf5440 100644
--- a/hw/i386/pc_piix.c
+++ b/hw/i386/pc_piix.c
@@ -37,6 +37,7 @@
#include "hw/kvm/clock.h"
#include "sysemu/sysemu.h"
#include "hw/sysbus.h"
+#include "hw/icc_bus.h"
#include "sysemu/arch_init.h"
#include "sysemu/blockdev.h"
#include "hw/smbus.h"
@@ -84,8 +85,13 @@ static void pc_init1(MemoryRegion *system_memory,
MemoryRegion *ram_memory;
MemoryRegion *pci_memory;
MemoryRegion *rom_memory;
+ DeviceState *icc_bridge;
void *fw_cfg = NULL;
+ icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE);
+ object_property_add_child(qdev_get_machine(), "icc-bridge",
+ OBJECT(icc_bridge), NULL);
+
pc_cpus_init(cpu_model);
pc_acpi_init("acpi-dsdt.aml");
@@ -160,6 +166,7 @@ static void pc_init1(MemoryRegion *system_memory,
if (pci_enabled) {
ioapic_init_gsi(gsi_state, "i440fx");
}
+ qdev_init_nofail(icc_bridge);
pc_register_ferr_irq(gsi[13]);
diff --git a/hw/i386/pc_q35.c b/hw/i386/pc_q35.c
index 4f5f347..fb701b4 100644
--- a/hw/i386/pc_q35.c
+++ b/hw/i386/pc_q35.c
@@ -41,6 +41,7 @@
#include "hw/ide/pci.h"
#include "hw/ide/ahci.h"
#include "hw/usb.h"
+#include "hw/icc_bus.h"
/* ICH9 AHCI has 6 ports */
#define MAX_SATA_PORTS 6
@@ -85,6 +86,11 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
ICH9LPCState *ich9_lpc;
PCIDevice *ahci;
qemu_irq *cmos_s3;
+ DeviceState *icc_bridge;
+
+ icc_bridge = qdev_create(NULL, TYPE_ICC_BRIDGE);
+ object_property_add_child(qdev_get_machine(), "icc-bridge",
+ OBJECT(icc_bridge), NULL);
pc_cpus_init(cpu_model);
pc_acpi_init("q35-acpi-dsdt.aml");
@@ -168,6 +174,7 @@ static void pc_q35_init(QEMUMachineInitArgs *args)
if (pci_enabled) {
ioapic_init_gsi(gsi_state, NULL);
}
+ qdev_init_nofail(icc_bridge);
pc_register_ferr_irq(gsi[13]);
diff --git a/hw/icc_bus.c b/hw/icc_bus.c
new file mode 100644
index 0000000..7e75a0e
--- /dev/null
+++ b/hw/icc_bus.c
@@ -0,0 +1,85 @@
+/* icc_bus.c
+ * emulate x86 ICC(INTERRUPT CONTROLLER COMMUNICATIONS) bus
+ *
+ * Copyright (c) 2013 Red Hat, Inc
+ *
+ * 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 "icc_bus.h"
+#include "sysbus.h"
+
+static void icc_bus_initfn(Object *obj)
+{
+ BusState *b = BUS(obj);
+ b->allow_hotplug = true;
+}
+
+static const TypeInfo icc_bus_info = {
+ .name = TYPE_ICC_BUS,
+ .parent = TYPE_BUS,
+ .instance_size = sizeof(ICCBus),
+ .instance_init = icc_bus_initfn,
+};
+
+static int icc_device_init(DeviceState *dev)
+{
+ ICCDevice *id = ICC_DEVICE(dev);
+ ICCDeviceClass *k = ICC_DEVICE_GET_CLASS(id);
+
+ return k->init(id);
+}
+
+static void icc_device_class_init(ObjectClass *klass, void *data)
+{
+ DeviceClass *k = DEVICE_CLASS(klass);
+
+ k->init = icc_device_init;
+ k->bus_type = TYPE_ICC_BUS;
+}
+
+static const TypeInfo icc_device_info = {
+ .name = TYPE_ICC_DEVICE,
+ .parent = TYPE_DEVICE,
+ .abstract = true,
+ .instance_size = sizeof(ICCDevice),
+ .class_size = sizeof(ICCDeviceClass),
+ .class_init = icc_device_class_init,
+};
+
+typedef struct ICCBridgeState {
+ SysBusDevice busdev;
+} ICCBridgeState;
+#define ICC_BRIGDE(obj) OBJECT_CHECK(ICCBridgeState, (obj), TYPE_ICC_BRIDGE)
+
+
+static void icc_bridge_initfn(Object *obj)
+{
+ qbus_create(TYPE_ICC_BUS, DEVICE(obj), "icc-bus");
+}
+
+static const TypeInfo icc_bridge_info = {
+ .name = "icc-bridge",
+ .parent = TYPE_SYS_BUS_DEVICE,
+ .instance_init = icc_bridge_initfn,
+ .instance_size = sizeof(ICCBridgeState),
+};
+
+static void icc_bus_register_types(void)
+{
+ type_register_static(&icc_bus_info);
+ type_register_static(&icc_device_info);
+ type_register_static(&icc_bridge_info);
+}
+
+type_init(icc_bus_register_types)
diff --git a/hw/icc_bus.h b/hw/icc_bus.h
new file mode 100644
index 0000000..f959a43
--- /dev/null
+++ b/hw/icc_bus.h
@@ -0,0 +1,51 @@
+/* icc_bus.h
+ * emulate x86 ICC(INTERRUPT CONTROLLER COMMUNICATIONS) bus
+ *
+ * Copyright (c) 2013 Red Hat, Inc
+ *
+ * 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/>
+ */
+#ifndef ICC_BUS_H
+#define ICC_BUS_H
+
+#include "hw/qdev-core.h"
+
+#define TYPE_ICC_BUS "icc-bus"
+
+#ifndef CONFIG_USER_ONLY
+typedef struct ICCBus {
+ BusState qbus;
+} ICCBus;
+#define ICC_BUS(obj) OBJECT_CHECK(ICCBus, (obj), TYPE_ICC_BUS)
+
+typedef struct ICCDevice {
+ DeviceState qdev;
+} ICCDevice;
+
+typedef struct ICCDeviceClass {
+ DeviceClass parent_class;
+ int (*init)(ICCDevice *dev);
+} ICCDeviceClass;
+#define TYPE_ICC_DEVICE "icc-device"
+#define ICC_DEVICE(obj) OBJECT_CHECK(ICCDevice, (obj), TYPE_ICC_DEVICE)
+#define ICC_DEVICE_CLASS(klass) \
+ OBJECT_CLASS_CHECK(ICCDeviceClass, (klass), TYPE_ICC_DEVICE)
+#define ICC_DEVICE_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(ICCDeviceClass, (obj), TYPE_ICC_DEVICE)
+
+#define TYPE_ICC_BRIDGE "icc-bridge"
+
+#endif /* CONFIG_USER_ONLY */
+#endif
+
--
1.8.1.4
- [Qemu-devel] [PATCH 22/22] add cpu-add qmp command and implement CPU hot-add for target-i386, (continued)
- [Qemu-devel] [PATCH 22/22] add cpu-add qmp command and implement CPU hot-add for target-i386, Igor Mammedov, 2013/04/05
- [Qemu-devel] [PATCH 12/22] cpu: add helper cpu_exists(), to check if CPU with specified id exists, Igor Mammedov, 2013/04/05
- [Qemu-devel] [PATCH 19/22] target-i386: move IOAPIC to ICC bus, Igor Mammedov, 2013/04/05
- [Qemu-devel] [PATCH 20/22] qdev: set device's parent before calling realize() down inheritance chain., Igor Mammedov, 2013/04/05
- [Qemu-devel] [PATCH 19/22] target-i386: move APIC to ICC bus, Igor Mammedov, 2013/04/05
- [Qemu-devel] [PATCH 15/22] introduce ICC bus/device/bridge,
Igor Mammedov <=
- [Qemu-devel] [PATCH 05/22] cpu: call cpu_synchronize_post_init() from CPUClass.realize() if hotplugged, Igor Mammedov, 2013/04/05
- Re: [Qemu-devel] [PATCH 05/22] cpu: call cpu_synchronize_post_init() from CPUClass.realize() if hotplugged, Paolo Bonzini, 2013/04/09
- [Qemu-devel] [PATCH 18/22] target-i386: move IOAPIC to ICC bus, Igor Mammedov, 2013/04/05