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authorYang Zhang <yang.z.zhang@intel.com>2015-08-28 09:58:54 +0800
committerYang Zhang <yang.z.zhang@intel.com>2015-09-01 12:44:00 +0800
commite44e3482bdb4d0ebde2d8b41830ac2cdb07948fb (patch)
tree66b09f592c55df2878107a468a91d21506104d3f /qemu/hw/i386/kvm/i8259.c
parent9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (diff)
Add qemu 2.4.0
Change-Id: Ic99cbad4b61f8b127b7dc74d04576c0bcbaaf4f5 Signed-off-by: Yang Zhang <yang.z.zhang@intel.com>
Diffstat (limited to 'qemu/hw/i386/kvm/i8259.c')
-rw-r--r--qemu/hw/i386/kvm/i8259.c162
1 files changed, 162 insertions, 0 deletions
diff --git a/qemu/hw/i386/kvm/i8259.c b/qemu/hw/i386/kvm/i8259.c
new file mode 100644
index 000000000..53e3ca8c6
--- /dev/null
+++ b/qemu/hw/i386/kvm/i8259.c
@@ -0,0 +1,162 @@
+/*
+ * KVM in-kernel PIC (i8259) 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/isa/i8259_internal.h"
+#include "hw/i386/apic_internal.h"
+#include "sysemu/kvm.h"
+
+#define TYPE_KVM_I8259 "kvm-i8259"
+#define KVM_PIC_CLASS(class) \
+ OBJECT_CLASS_CHECK(KVMPICClass, (class), TYPE_KVM_I8259)
+#define KVM_PIC_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(KVMPICClass, (obj), TYPE_KVM_I8259)
+
+/**
+ * KVMPICClass:
+ * @parent_realize: The parent's realizefn.
+ */
+typedef struct KVMPICClass {
+ PICCommonClass parent_class;
+
+ DeviceRealize parent_realize;
+} KVMPICClass;
+
+static void kvm_pic_get(PICCommonState *s)
+{
+ struct kvm_irqchip chip;
+ struct kvm_pic_state *kpic;
+ int ret;
+
+ chip.chip_id = s->master ? KVM_IRQCHIP_PIC_MASTER : KVM_IRQCHIP_PIC_SLAVE;
+ ret = kvm_vm_ioctl(kvm_state, KVM_GET_IRQCHIP, &chip);
+ if (ret < 0) {
+ fprintf(stderr, "KVM_GET_IRQCHIP failed: %s\n", strerror(ret));
+ abort();
+ }
+
+ kpic = &chip.chip.pic;
+
+ s->last_irr = kpic->last_irr;
+ s->irr = kpic->irr;
+ s->imr = kpic->imr;
+ s->isr = kpic->isr;
+ s->priority_add = kpic->priority_add;
+ s->irq_base = kpic->irq_base;
+ s->read_reg_select = kpic->read_reg_select;
+ s->poll = kpic->poll;
+ s->special_mask = kpic->special_mask;
+ s->init_state = kpic->init_state;
+ s->auto_eoi = kpic->auto_eoi;
+ s->rotate_on_auto_eoi = kpic->rotate_on_auto_eoi;
+ s->special_fully_nested_mode = kpic->special_fully_nested_mode;
+ s->init4 = kpic->init4;
+ s->elcr = kpic->elcr;
+ s->elcr_mask = kpic->elcr_mask;
+}
+
+static void kvm_pic_put(PICCommonState *s)
+{
+ struct kvm_irqchip chip;
+ struct kvm_pic_state *kpic;
+ int ret;
+
+ chip.chip_id = s->master ? KVM_IRQCHIP_PIC_MASTER : KVM_IRQCHIP_PIC_SLAVE;
+
+ kpic = &chip.chip.pic;
+
+ kpic->last_irr = s->last_irr;
+ kpic->irr = s->irr;
+ kpic->imr = s->imr;
+ kpic->isr = s->isr;
+ kpic->priority_add = s->priority_add;
+ kpic->irq_base = s->irq_base;
+ kpic->read_reg_select = s->read_reg_select;
+ kpic->poll = s->poll;
+ kpic->special_mask = s->special_mask;
+ kpic->init_state = s->init_state;
+ kpic->auto_eoi = s->auto_eoi;
+ kpic->rotate_on_auto_eoi = s->rotate_on_auto_eoi;
+ kpic->special_fully_nested_mode = s->special_fully_nested_mode;
+ kpic->init4 = s->init4;
+ kpic->elcr = s->elcr;
+ kpic->elcr_mask = s->elcr_mask;
+
+ 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_pic_reset(DeviceState *dev)
+{
+ PICCommonState *s = PIC_COMMON(dev);
+
+ s->elcr = 0;
+ pic_reset_common(s);
+
+ kvm_pic_put(s);
+}
+
+static void kvm_pic_set_irq(void *opaque, int irq, int level)
+{
+ int delivered;
+
+ delivered = kvm_set_irq(kvm_state, irq, level);
+ apic_report_irq_delivered(delivered);
+}
+
+static void kvm_pic_realize(DeviceState *dev, Error **errp)
+{
+ PICCommonState *s = PIC_COMMON(dev);
+ KVMPICClass *kpc = KVM_PIC_GET_CLASS(dev);
+
+ memory_region_init_reservation(&s->base_io, NULL, "kvm-pic", 2);
+ memory_region_init_reservation(&s->elcr_io, NULL, "kvm-elcr", 1);
+
+ kpc->parent_realize(dev, errp);
+}
+
+qemu_irq *kvm_i8259_init(ISABus *bus)
+{
+ i8259_init_chip(TYPE_KVM_I8259, bus, true);
+ i8259_init_chip(TYPE_KVM_I8259, bus, false);
+
+ return qemu_allocate_irqs(kvm_pic_set_irq, NULL, ISA_NUM_IRQS);
+}
+
+static void kvm_i8259_class_init(ObjectClass *klass, void *data)
+{
+ KVMPICClass *kpc = KVM_PIC_CLASS(klass);
+ PICCommonClass *k = PIC_COMMON_CLASS(klass);
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = kvm_pic_reset;
+ kpc->parent_realize = dc->realize;
+ dc->realize = kvm_pic_realize;
+ k->pre_save = kvm_pic_get;
+ k->post_load = kvm_pic_put;
+}
+
+static const TypeInfo kvm_i8259_info = {
+ .name = TYPE_KVM_I8259,
+ .parent = TYPE_PIC_COMMON,
+ .instance_size = sizeof(PICCommonState),
+ .class_init = kvm_i8259_class_init,
+ .class_size = sizeof(KVMPICClass),
+};
+
+static void kvm_pic_register_types(void)
+{
+ type_register_static(&kvm_i8259_info);
+}
+
+type_init(kvm_pic_register_types)