new file mode 100644
@@ -0,0 +1,165 @@
+/*
+ * AEHD 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 "qemu/osdep.h"
+#include "hw/isa/i8259_internal.h"
+#include "hw/i386/apic_internal.h"
+#include "sysemu/aehd.h"
+#include "sysemu/aehd-interface.h"
+
+#define TYPE_AEHD_I8259 "aehd-i8259"
+#define AEHD_PIC_CLASS(class) \
+ OBJECT_CLASS_CHECK(AEHDPICClass, (class), TYPE_AEHD_I8259)
+#define AEHD_PIC_GET_CLASS(obj) \
+ OBJECT_GET_CLASS(AEHDPICClass, (obj), TYPE_AEHD_I8259)
+
+/**
+ * AEHDPICClass:
+ * @parent_realize: The parent's realizefn.
+ */
+typedef struct AEHDPICClass {
+ PICCommonClass parent_class;
+
+ DeviceRealize parent_realize;
+} AEHDPICClass;
+
+static void aehd_pic_get(PICCommonState *s)
+{
+ struct aehd_irqchip chip;
+ struct aehd_pic_state *aepic;
+ int ret;
+
+ chip.chip_id = s->master ? AEHD_IRQCHIP_PIC_MASTER : AEHD_IRQCHIP_PIC_SLAVE;
+ ret = aehd_vm_ioctl(aehd_state, AEHD_GET_IRQCHIP, &chip, sizeof(chip),
+ &chip, sizeof(chip));
+ if (ret < 0) {
+ fprintf(stderr, "AEHD_GET_IRQCHIP failed: %s\n", strerror(ret));
+ abort();
+ }
+
+ aepic = &chip.chip.pic;
+
+ s->last_irr = aepic->last_irr;
+ s->irr = aepic->irr;
+ s->imr = aepic->imr;
+ s->isr = aepic->isr;
+ s->priority_add = aepic->priority_add;
+ s->irq_base = aepic->irq_base;
+ s->read_reg_select = aepic->read_reg_select;
+ s->poll = aepic->poll;
+ s->special_mask = aepic->special_mask;
+ s->init_state = aepic->init_state;
+ s->auto_eoi = aepic->auto_eoi;
+ s->rotate_on_auto_eoi = aepic->rotate_on_auto_eoi;
+ s->special_fully_nested_mode = aepic->special_fully_nested_mode;
+ s->init4 = aepic->init4;
+ s->elcr = aepic->elcr;
+ s->elcr_mask = aepic->elcr_mask;
+}
+
+static void aehd_pic_put(PICCommonState *s)
+{
+ struct aehd_irqchip chip;
+ struct aehd_pic_state *aepic;
+ int ret;
+
+ chip.chip_id = s->master ? AEHD_IRQCHIP_PIC_MASTER : AEHD_IRQCHIP_PIC_SLAVE;
+
+ aepic = &chip.chip.pic;
+
+ aepic->last_irr = s->last_irr;
+ aepic->irr = s->irr;
+ aepic->imr = s->imr;
+ aepic->isr = s->isr;
+ aepic->priority_add = s->priority_add;
+ aepic->irq_base = s->irq_base;
+ aepic->read_reg_select = s->read_reg_select;
+ aepic->poll = s->poll;
+ aepic->special_mask = s->special_mask;
+ aepic->init_state = s->init_state;
+ aepic->auto_eoi = s->auto_eoi;
+ aepic->rotate_on_auto_eoi = s->rotate_on_auto_eoi;
+ aepic->special_fully_nested_mode = s->special_fully_nested_mode;
+ aepic->init4 = s->init4;
+ aepic->elcr = s->elcr;
+ aepic->elcr_mask = s->elcr_mask;
+
+ ret = aehd_vm_ioctl(aehd_state, AEHD_SET_IRQCHIP,
+ &chip, sizeof(chip), NULL, 0);
+ if (ret < 0) {
+ fprintf(stderr, "AEHD_GET_IRQCHIP failed: %s\n", strerror(ret));
+ abort();
+ }
+}
+
+static void aehd_pic_reset(DeviceState *dev)
+{
+ PICCommonState *s = PIC_COMMON(dev);
+
+ s->elcr = 0;
+ pic_reset_common(s);
+
+ aehd_pic_put(s);
+}
+
+static void aehd_pic_set_irq(void *opaque, int irq, int level)
+{
+ pic_stat_update_irq(irq, level);
+ aehd_set_irq(aehd_state, irq, level);
+}
+
+static void aehd_pic_realize(DeviceState *dev, Error **errp)
+{
+ PICCommonState *s = PIC_COMMON(dev);
+ AEHDPICClass *kpc = AEHD_PIC_GET_CLASS(dev);
+
+ memory_region_init_io(&s->base_io, OBJECT(dev), NULL, NULL, "aehd-pic", 2);
+ memory_region_init_io(&s->elcr_io, OBJECT(dev), NULL, NULL, "aehd-elcr", 1);
+
+
+ kpc->parent_realize(dev, errp);
+}
+
+qemu_irq *aehd_i8259_init(ISABus *bus)
+{
+ i8259_init_chip(TYPE_AEHD_I8259, bus, true);
+ i8259_init_chip(TYPE_AEHD_I8259, bus, false);
+
+ return qemu_allocate_irqs(aehd_pic_set_irq, NULL, ISA_NUM_IRQS);
+}
+
+static void aehd_i8259_class_init(ObjectClass *klass, void *data)
+{
+ AEHDPICClass *kpc = AEHD_PIC_CLASS(klass);
+ PICCommonClass *k = PIC_COMMON_CLASS(klass);
+ DeviceClass *dc = DEVICE_CLASS(klass);
+
+ dc->reset = aehd_pic_reset;
+ kpc->parent_realize = dc->realize;
+ dc->realize = aehd_pic_realize;
+ k->pre_save = aehd_pic_get;
+ k->post_load = aehd_pic_put;
+}
+
+static const TypeInfo aehd_i8259_info = {
+ .name = TYPE_AEHD_I8259,
+ .parent = TYPE_PIC_COMMON,
+ .instance_size = sizeof(PICCommonState),
+ .class_init = aehd_i8259_class_init,
+ .class_size = sizeof(AEHDPICClass),
+};
+
+static void aehd_pic_register_types(void)
+{
+ type_register_static(&aehd_i8259_info);
+}
+
+type_init(aehd_pic_register_types)
@@ -1,5 +1,6 @@
i386_aehd_ss = ss.source_set()
i386_aehd_ss.add(when: 'CONFIG_APIC', if_true: files('apic.c'))
+i386_aehd_ss.add(when: 'CONFIG_I8259', if_true: files('i8259.c'))
i386_aehd_ss.add(when: 'CONFIG_IOAPIC', if_true: files('ioapic.c'))
i386_ss.add_all(when: 'CONFIG_AEHD', if_true: i386_aehd_ss)
@@ -1356,6 +1356,8 @@ void pc_i8259_create(ISABus *isa_bus, qemu_irq *i8259_irqs)
if (kvm_pic_in_kernel()) {
i8259 = kvm_i8259_init(isa_bus);
+ } else if (aehd_enabled()) {
+ i8259 = aehd_i8259_init(isa_bus);
} else if (xen_enabled()) {
i8259 = xen_interrupt_controller_init();
} else {
@@ -14,6 +14,7 @@ extern PICCommonState *isa_pic;
*/
qemu_irq *i8259_init(ISABus *bus, qemu_irq parent_irq_in);
qemu_irq *kvm_i8259_init(ISABus *bus);
+qemu_irq *aehd_i8259_init(ISABus *bus);
int pic_get_output(PICCommonState *s);
int pic_read_irq(PICCommonState *s);
The aehd-i8259 device type represents the AEHD in kernel PICs. The irqchips should be always in kernel when AEHD is used. Signed-off-by: Haitao Shan <hshan@google.com> --- hw/i386/aehd/i8259.c | 165 +++++++++++++++++++++++++++++++++++++++ hw/i386/aehd/meson.build | 1 + hw/i386/pc.c | 2 + include/hw/intc/i8259.h | 1 + 4 files changed, 169 insertions(+) create mode 100644 hw/i386/aehd/i8259.c