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x86: add support for second ioapic

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Add ioapic_init_secondary to initialize it, wire up
in gsi handling and acpi apic table creation.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: Sergio Lopez <slp@redhat.com>
Message-id: 20201203105423.10431-4-kraxel@redhat.com
This commit is contained in:
Gerd Hoffmann 2020-12-03 11:54:14 +01:00
parent ceea95cd88
commit 94c5a60637
5 changed files with 37 additions and 1 deletions
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10
hw/i386/acpi-common.c
View File

@ -103,6 +103,16 @@ void acpi_build_madt(GArray *table_data, BIOSLinker *linker,
io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS);
io_apic->interrupt = cpu_to_le32(0);
if (x86ms->ioapic2) {
AcpiMadtIoApic *io_apic2;
io_apic2 = acpi_data_push(table_data, sizeof *io_apic);
io_apic2->type = ACPI_APIC_IO;
io_apic2->length = sizeof(*io_apic);
io_apic2->io_apic_id = ACPI_BUILD_IOAPIC_ID + 1;
io_apic2->address = cpu_to_le32(IO_APIC_SECONDARY_ADDRESS);
io_apic2->interrupt = cpu_to_le32(IO_APIC_SECONDARY_IRQBASE);
}
if (x86ms->apic_xrupt_override) {
intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;

21
hw/i386/x86.c
View File

@ -598,6 +598,10 @@ void gsi_handler(void *opaque, int n, int level)
case ISA_NUM_IRQS ... IOAPIC_NUM_PINS - 1:
qemu_set_irq(s->ioapic_irq[n], level);
break;
case IO_APIC_SECONDARY_IRQBASE
... IO_APIC_SECONDARY_IRQBASE + IOAPIC_NUM_PINS - 1:
qemu_set_irq(s->ioapic2_irq[n - IO_APIC_SECONDARY_IRQBASE], level);
break;
}
}
@ -624,6 +628,23 @@ void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name)
}
}
DeviceState *ioapic_init_secondary(GSIState *gsi_state)
{
DeviceState *dev;
SysBusDevice *d;
unsigned int i;
dev = qdev_new(TYPE_IOAPIC);
d = SYS_BUS_DEVICE(dev);
sysbus_realize_and_unref(d, &error_fatal);
sysbus_mmio_map(d, 0, IO_APIC_SECONDARY_ADDRESS);
for (i = 0; i < IOAPIC_NUM_PINS; i++) {
gsi_state->ioapic2_irq[i] = qdev_get_gpio_in(dev, i);
}
return dev;
}
struct setup_data {
uint64_t next;
uint32_t type;

2
include/hw/i386/ioapic.h
View File

@ -22,6 +22,8 @@
#define IOAPIC_NUM_PINS 24
#define IO_APIC_DEFAULT_ADDRESS 0xfec00000
#define IO_APIC_SECONDARY_ADDRESS (IO_APIC_DEFAULT_ADDRESS + 0x10000)
#define IO_APIC_SECONDARY_IRQBASE 24 /* primary 0 -> 23, secondary 24 -> 47 */
#define TYPE_KVM_IOAPIC "kvm-ioapic"
#define TYPE_IOAPIC "ioapic"

2
include/hw/i386/ioapic_internal.h
View File

@ -27,7 +27,7 @@
#include "qemu/notify.h"
#include "qom/object.h"
#define MAX_IOAPICS 1
#define MAX_IOAPICS 2
#define IOAPIC_LVT_DEST_SHIFT 56
#define IOAPIC_LVT_DEST_IDX_SHIFT 48

3
include/hw/i386/x86.h
View File

@ -50,6 +50,7 @@ struct X86MachineState {
ISADevice *rtc;
FWCfgState *fw_cfg;
qemu_irq *gsi;
DeviceState *ioapic2;
GMappedFile *initrd_mapped_file;
HotplugHandler *acpi_dev;
@ -120,10 +121,12 @@ bool x86_machine_is_acpi_enabled(const X86MachineState *x86ms);
typedef struct GSIState {
qemu_irq i8259_irq[ISA_NUM_IRQS];
qemu_irq ioapic_irq[IOAPIC_NUM_PINS];
qemu_irq ioapic2_irq[IOAPIC_NUM_PINS];
} GSIState;
qemu_irq x86_allocate_cpu_irq(void);
void gsi_handler(void *opaque, int n, int level);
void ioapic_init_gsi(GSIState *gsi_state, const char *parent_name);
DeviceState *ioapic_init_secondary(GSIState *gsi_state);
#endif