* inherit IOAPICs from ICCDevice and attach them to ICC bus * map IOAPIC's mmio at board level via indirect icc-bridge mmio region that provides address space to IOAPIC via icc-bus
Signed-off-by: Igor Mammedov <imamm...@redhat.com> --- * do not create IOAPIC in icc-bridge and do not make it QOM child of icc-bridge, just attach it to icc-bus. --- hw/cpu/icc_bus.c | 6 ++++++ hw/i386/kvm/ioapic.c | 2 +- hw/i386/pc.c | 10 ++++++---- hw/intc/ioapic_common.c | 15 +++++++++++---- include/exec/memory.h | 10 ++++++++++ include/hw/i386/icc_bus.h | 1 + include/hw/i386/ioapic_internal.h | 6 +++--- memory.c | 11 +++++++++++ 8 files changed, 49 insertions(+), 12 deletions(-) diff --git a/hw/cpu/icc_bus.c b/hw/cpu/icc_bus.c index 5078c38..d241438 100644 --- a/hw/cpu/icc_bus.c +++ b/hw/cpu/icc_bus.c @@ -63,6 +63,7 @@ static const TypeInfo icc_device_info = { typedef struct ICCBridgeState { SysBusDevice busdev; MemoryRegion apic_container; + MemoryRegion ioapic_container; } ICCBridgeState; #define ICC_BRIGDE(obj) OBJECT_CHECK(ICCBridgeState, (obj), TYPE_ICC_BRIDGE) @@ -82,6 +83,11 @@ static void icc_bridge_initfn(Object *obj) APIC_SPACE_SIZE); sysbus_init_mmio(sb, &s->apic_container); ibus->apic_address_space = &s->apic_container; + + /* must be second registered region, board maps it by 1 index */ + memory_region_init(&s->ioapic_container, "icc-ioapic-container", 0x1000); + sysbus_init_mmio(sb, &s->ioapic_container); + ibus->ioapic_address_space = &s->ioapic_container; } static const TypeInfo icc_bridge_info = { diff --git a/hw/i386/kvm/ioapic.c b/hw/i386/kvm/ioapic.c index a3bd519..b80d41a 100644 --- a/hw/i386/kvm/ioapic.c +++ b/hw/i386/kvm/ioapic.c @@ -96,7 +96,7 @@ static void kvm_ioapic_put(IOAPICCommonState *s) kioapic->id = s->id; kioapic->ioregsel = s->ioregsel; - kioapic->base_address = s->busdev.mmio[0].addr; + kioapic->base_address = memory_region_get_address(&s->io_memory); kioapic->irr = s->irr; for (i = 0; i < IOAPIC_NUM_PINS; i++) { kioapic->redirtbl[i].bits = s->ioredtbl[i]; diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 31b5294..a5c19a2 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -1217,20 +1217,22 @@ void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name) DeviceState *dev; SysBusDevice *d; unsigned int i; + BusState *b = BUS(object_resolve_path_type("icc-bus", TYPE_ICC_BUS, NULL)); if (kvm_irqchip_in_kernel()) { - dev = qdev_create(NULL, "kvm-ioapic"); + dev = qdev_create(b, "kvm-ioapic"); } else { - dev = qdev_create(NULL, "ioapic"); + dev = qdev_create(b, "ioapic"); } if (parent_name) { object_property_add_child(object_resolve_path(parent_name, NULL), "ioapic", OBJECT(dev), NULL); } qdev_init_nofail(dev); - d = SYS_BUS_DEVICE(dev); - sysbus_mmio_map(d, 0, IO_APIC_DEFAULT_ADDRESS); + d = SYS_BUS_DEVICE(object_resolve_path_type("icc-bridge", TYPE_ICC_BRIDGE, + NULL)); + sysbus_mmio_map(d, 1, IO_APIC_DEFAULT_ADDRESS); for (i = 0; i < IOAPIC_NUM_PINS; i++) { gsi_state->ioapic_irq[i] = qdev_get_gpio_in(dev, i); } diff --git a/hw/intc/ioapic_common.c b/hw/intc/ioapic_common.c index 5c5bb3c..72c48a8 100644 --- a/hw/intc/ioapic_common.c +++ b/hw/intc/ioapic_common.c @@ -57,11 +57,13 @@ static int ioapic_dispatch_post_load(void *opaque, int version_id) return 0; } -static int ioapic_init_common(SysBusDevice *dev) +static int ioapic_init_common(ICCDevice *dev) { IOAPICCommonState *s = IOAPIC_COMMON(dev); + DeviceState *d = DEVICE(dev); IOAPICCommonClass *info; static int ioapic_no; + static bool mmio_registered; if (ioapic_no >= MAX_IOAPICS) { return -1; @@ -70,7 +72,12 @@ static int ioapic_init_common(SysBusDevice *dev) info = IOAPIC_COMMON_GET_CLASS(s); info->init(s, ioapic_no); - sysbus_init_mmio(&s->busdev, &s->io_memory); + if (!mmio_registered) { + MemoryRegion *as = ICC_BUS(d->parent_bus)->ioapic_address_space; + memory_region_add_subregion(as, 0, &s->io_memory); + mmio_registered = true; + } + ioapic_no++; return 0; @@ -95,7 +102,7 @@ static const VMStateDescription vmstate_ioapic_common = { static void ioapic_common_class_init(ObjectClass *klass, void *data) { - SysBusDeviceClass *sc = SYS_BUS_DEVICE_CLASS(klass); + ICCDeviceClass *sc = ICC_DEVICE_CLASS(klass); DeviceClass *dc = DEVICE_CLASS(klass); sc->init = ioapic_init_common; @@ -105,7 +112,7 @@ static void ioapic_common_class_init(ObjectClass *klass, void *data) static const TypeInfo ioapic_common_type = { .name = TYPE_IOAPIC_COMMON, - .parent = TYPE_SYS_BUS_DEVICE, + .parent = TYPE_ICC_DEVICE, .instance_size = sizeof(IOAPICCommonState), .class_size = sizeof(IOAPICCommonClass), .class_init = ioapic_common_class_init, diff --git a/include/exec/memory.h b/include/exec/memory.h index 2322732..826e401 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -711,6 +711,16 @@ void memory_region_set_enabled(MemoryRegion *mr, bool enabled); void memory_region_set_address(MemoryRegion *mr, hwaddr addr); /* + * memory_region_get_address: get current the address of a region + * + * Returns the absolute address of a region. + * May be used on regions that are currently part of a memory hierarchy. + * + * @mr: the region being queried + */ +hwaddr memory_region_get_address(MemoryRegion *mr); + +/* * memory_region_set_alias_offset: dynamically update a memory alias's offset * * Dynamically updates the offset into the target region that an alias points diff --git a/include/hw/i386/icc_bus.h b/include/hw/i386/icc_bus.h index 1b07619..d92c6ab 100644 --- a/include/hw/i386/icc_bus.h +++ b/include/hw/i386/icc_bus.h @@ -31,6 +31,7 @@ typedef struct ICCBus { BusState qbus; MemoryRegion *apic_address_space; + MemoryRegion *ioapic_address_space; } ICCBus; #define ICC_BUS(obj) OBJECT_CHECK(ICCBus, (obj), TYPE_ICC_BUS) diff --git a/include/hw/i386/ioapic_internal.h b/include/hw/i386/ioapic_internal.h index 25576c8..4768c5b 100644 --- a/include/hw/i386/ioapic_internal.h +++ b/include/hw/i386/ioapic_internal.h @@ -24,7 +24,7 @@ #include "hw/hw.h" #include "exec/memory.h" -#include "hw/sysbus.h" +#include "hw/i386/icc_bus.h" #define MAX_IOAPICS 1 @@ -82,14 +82,14 @@ typedef struct IOAPICCommonState IOAPICCommonState; OBJECT_GET_CLASS(IOAPICCommonClass, (obj), TYPE_IOAPIC_COMMON) typedef struct IOAPICCommonClass { - SysBusDeviceClass parent_class; + ICCDeviceClass parent_class; void (*init)(IOAPICCommonState *s, int instance_no); void (*pre_save)(IOAPICCommonState *s); void (*post_load)(IOAPICCommonState *s); } IOAPICCommonClass; struct IOAPICCommonState { - SysBusDevice busdev; + ICCDevice busdev; MemoryRegion io_memory; uint8_t id; uint8_t ioregsel; diff --git a/memory.c b/memory.c index 75ca281..0651050 100644 --- a/memory.c +++ b/memory.c @@ -1413,6 +1413,17 @@ void memory_region_set_address(MemoryRegion *mr, hwaddr addr) memory_region_transaction_commit(); } +hwaddr memory_region_get_address(MemoryRegion *mr) +{ + hwaddr addr = mr->addr; + + while (mr->parent) { + mr = mr->parent; + addr += mr->addr; + } + return addr; +} + void memory_region_set_alias_offset(MemoryRegion *mr, hwaddr offset) { assert(mr->alias); -- 1.8.2