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qemu/hw/i386/pc.c
Markus Armbruster b69c3c21a5 qdev: Unrealize must not fail 
Devices may have component devices and buses.

Device realization may fail.  Realization is recursive: a device's
realize() method realizes its components, and device_set_realized()
realizes its buses (which should in turn realize the devices on that
bus, except bus_set_realized() doesn't implement that, yet).

When realization of a component or bus fails, we need to roll back:
unrealize everything we realized so far.  If any of these unrealizes
failed, the device would be left in an inconsistent state.  Must not
happen.

device_set_realized() lets it happen: it ignores errors in the roll
back code starting at label child_realize_fail.

Since realization is recursive, unrealization must be recursive, too.
But how could a partly failed unrealize be rolled back?  We'd have to
re-realize, which can fail.  This design is fundamentally broken.

device_set_realized() does not roll back at all.  Instead, it keeps
unrealizing, ignoring further errors.

It can screw up even for a device with no buses: if the lone
dc->unrealize() fails, it still unregisters vmstate, and calls
listeners' unrealize() callback.

bus_set_realized() does not roll back either.  Instead, it stops
unrealizing.

Fortunately, no unrealize method can fail, as we'll see below.

To fix the design error, drop parameter @errp from all the unrealize
methods.

Any unrealize method that uses @errp now needs an update.  This leads
us to unrealize() methods that can fail.  Merely passing it to another
unrealize method cannot cause failure, though.  Here are the ones that
do other things with @errp:

* virtio_serial_device_unrealize()

  Fails when qbus_set_hotplug_handler() fails, but still does all the
  other work.  On failure, the device would stay realized with its
  resources completely gone.  Oops.  Can't happen, because
  qbus_set_hotplug_handler() can't actually fail here.  Pass
  &error_abort to qbus_set_hotplug_handler() instead.

* hw/ppc/spapr_drc.c's unrealize()

  Fails when object_property_del() fails, but all the other work is
  already done.  On failure, the device would stay realized with its
  vmstate registration gone.  Oops.  Can't happen, because
  object_property_del() can't actually fail here.  Pass &error_abort
  to object_property_del() instead.

* spapr_phb_unrealize()

  Fails and bails out when remove_drcs() fails, but other work is
  already done.  On failure, the device would stay realized with some
  of its resources gone.  Oops.  remove_drcs() fails only when
  chassis_from_bus()'s object_property_get_uint() fails, and it can't
  here.  Pass &error_abort to remove_drcs() instead.

Therefore, no unrealize method can fail before this patch.

device_set_realized()'s recursive unrealization via bus uses
object_property_set_bool().  Can't drop @errp there, so pass
&error_abort.

We similarly unrealize with object_property_set_bool() elsewhere,
always ignoring errors.  Pass &error_abort instead.

Several unrealize methods no longer handle errors from other unrealize
methods: virtio_9p_device_unrealize(),
virtio_input_device_unrealize(), scsi_qdev_unrealize(), ...
Much of the deleted error handling looks wrong anyway.

One unrealize methods no longer ignore such errors:
usb_ehci_pci_exit().

Several realize methods no longer ignore errors when rolling back:
v9fs_device_realize_common(), pci_qdev_unrealize(),
spapr_phb_realize(), usb_qdev_realize(), vfio_ccw_realize(),
virtio_device_realize().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20200505152926.18877-17-armbru@redhat.com>
2020-05-15 07:08:14 +02:00

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/*
* QEMU PC System Emulator
*
* Copyright (c) 2003-2004 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include "qemu/units.h"
#include "hw/i386/x86.h"
#include "hw/i386/pc.h"
#include "hw/char/serial.h"
#include "hw/char/parallel.h"
#include "hw/i386/apic.h"
#include "hw/i386/topology.h"
#include "hw/i386/fw_cfg.h"
#include "sysemu/cpus.h"
#include "hw/block/fdc.h"
#include "hw/ide.h"
#include "hw/pci/pci.h"
#include "hw/pci/pci_bus.h"
#include "hw/nvram/fw_cfg.h"
#include "hw/timer/hpet.h"
#include "hw/firmware/smbios.h"
#include "hw/loader.h"
#include "elf.h"
#include "migration/vmstate.h"
#include "multiboot.h"
#include "hw/rtc/mc146818rtc.h"
#include "hw/intc/i8259.h"
#include "hw/dma/i8257.h"
#include "hw/timer/i8254.h"
#include "hw/input/i8042.h"
#include "hw/irq.h"
#include "hw/audio/pcspk.h"
#include "hw/pci/msi.h"
#include "hw/sysbus.h"
#include "sysemu/sysemu.h"
#include "sysemu/tcg.h"
#include "sysemu/numa.h"
#include "sysemu/kvm.h"
#include "sysemu/qtest.h"
#include "sysemu/reset.h"
#include "sysemu/runstate.h"
#include "kvm_i386.h"
#include "hw/xen/xen.h"
#include "hw/xen/start_info.h"
#include "ui/qemu-spice.h"
#include "exec/memory.h"
#include "exec/address-spaces.h"
#include "sysemu/arch_init.h"
#include "qemu/bitmap.h"
#include "qemu/config-file.h"
#include "qemu/error-report.h"
#include "qemu/option.h"
#include "qemu/cutils.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/cpu_hotplug.h"
#include "hw/boards.h"
#include "acpi-build.h"
#include "hw/mem/pc-dimm.h"
#include "hw/mem/nvdimm.h"
#include "qapi/error.h"
#include "qapi/qapi-visit-common.h"
#include "qapi/visitor.h"
#include "hw/core/cpu.h"
#include "hw/usb.h"
#include "hw/i386/intel_iommu.h"
#include "hw/net/ne2000-isa.h"
#include "standard-headers/asm-x86/bootparam.h"
#include "hw/virtio/virtio-pmem-pci.h"
#include "hw/mem/memory-device.h"
#include "sysemu/replay.h"
#include "qapi/qmp/qerror.h"
#include "config-devices.h"
#include "e820_memory_layout.h"
#include "vmport.h"
#include "fw_cfg.h"
#include "trace.h"
GlobalProperty pc_compat_5_0[] = {};
const size_t pc_compat_5_0_len = G_N_ELEMENTS(pc_compat_5_0);
GlobalProperty pc_compat_4_2[] = {
{ "mch", "smbase-smram", "off" },
};
const size_t pc_compat_4_2_len = G_N_ELEMENTS(pc_compat_4_2);
GlobalProperty pc_compat_4_1[] = {};
const size_t pc_compat_4_1_len = G_N_ELEMENTS(pc_compat_4_1);
GlobalProperty pc_compat_4_0[] = {};
const size_t pc_compat_4_0_len = G_N_ELEMENTS(pc_compat_4_0);
GlobalProperty pc_compat_3_1[] = {
{ "intel-iommu", "dma-drain", "off" },
{ "Opteron_G3" "-" TYPE_X86_CPU, "rdtscp", "off" },
{ "Opteron_G4" "-" TYPE_X86_CPU, "rdtscp", "off" },
{ "Opteron_G4" "-" TYPE_X86_CPU, "npt", "off" },
{ "Opteron_G4" "-" TYPE_X86_CPU, "nrip-save", "off" },
{ "Opteron_G5" "-" TYPE_X86_CPU, "rdtscp", "off" },
{ "Opteron_G5" "-" TYPE_X86_CPU, "npt", "off" },
{ "Opteron_G5" "-" TYPE_X86_CPU, "nrip-save", "off" },
{ "EPYC" "-" TYPE_X86_CPU, "npt", "off" },
{ "EPYC" "-" TYPE_X86_CPU, "nrip-save", "off" },
{ "EPYC-IBPB" "-" TYPE_X86_CPU, "npt", "off" },
{ "EPYC-IBPB" "-" TYPE_X86_CPU, "nrip-save", "off" },
{ "Skylake-Client" "-" TYPE_X86_CPU, "mpx", "on" },
{ "Skylake-Client-IBRS" "-" TYPE_X86_CPU, "mpx", "on" },
{ "Skylake-Server" "-" TYPE_X86_CPU, "mpx", "on" },
{ "Skylake-Server-IBRS" "-" TYPE_X86_CPU, "mpx", "on" },
{ "Cascadelake-Server" "-" TYPE_X86_CPU, "mpx", "on" },
{ "Icelake-Client" "-" TYPE_X86_CPU, "mpx", "on" },
{ "Icelake-Server" "-" TYPE_X86_CPU, "mpx", "on" },
{ "Cascadelake-Server" "-" TYPE_X86_CPU, "stepping", "5" },
{ TYPE_X86_CPU, "x-intel-pt-auto-level", "off" },
};
const size_t pc_compat_3_1_len = G_N_ELEMENTS(pc_compat_3_1);
GlobalProperty pc_compat_3_0[] = {
{ TYPE_X86_CPU, "x-hv-synic-kvm-only", "on" },
{ "Skylake-Server" "-" TYPE_X86_CPU, "pku", "off" },
{ "Skylake-Server-IBRS" "-" TYPE_X86_CPU, "pku", "off" },
};
const size_t pc_compat_3_0_len = G_N_ELEMENTS(pc_compat_3_0);
GlobalProperty pc_compat_2_12[] = {
{ TYPE_X86_CPU, "legacy-cache", "on" },
{ TYPE_X86_CPU, "topoext", "off" },
{ "EPYC-" TYPE_X86_CPU, "xlevel", "0x8000000a" },
{ "EPYC-IBPB-" TYPE_X86_CPU, "xlevel", "0x8000000a" },
};
const size_t pc_compat_2_12_len = G_N_ELEMENTS(pc_compat_2_12);
GlobalProperty pc_compat_2_11[] = {
{ TYPE_X86_CPU, "x-migrate-smi-count", "off" },
{ "Skylake-Server" "-" TYPE_X86_CPU, "clflushopt", "off" },
};
const size_t pc_compat_2_11_len = G_N_ELEMENTS(pc_compat_2_11);
GlobalProperty pc_compat_2_10[] = {
{ TYPE_X86_CPU, "x-hv-max-vps", "0x40" },
{ "i440FX-pcihost", "x-pci-hole64-fix", "off" },
{ "q35-pcihost", "x-pci-hole64-fix", "off" },
};
const size_t pc_compat_2_10_len = G_N_ELEMENTS(pc_compat_2_10);
GlobalProperty pc_compat_2_9[] = {
{ "mch", "extended-tseg-mbytes", "0" },
};
const size_t pc_compat_2_9_len = G_N_ELEMENTS(pc_compat_2_9);
GlobalProperty pc_compat_2_8[] = {
{ TYPE_X86_CPU, "tcg-cpuid", "off" },
{ "kvmclock", "x-mach-use-reliable-get-clock", "off" },
{ "ICH9-LPC", "x-smi-broadcast", "off" },
{ TYPE_X86_CPU, "vmware-cpuid-freq", "off" },
{ "Haswell-" TYPE_X86_CPU, "stepping", "1" },
};
const size_t pc_compat_2_8_len = G_N_ELEMENTS(pc_compat_2_8);
GlobalProperty pc_compat_2_7[] = {
{ TYPE_X86_CPU, "l3-cache", "off" },
{ TYPE_X86_CPU, "full-cpuid-auto-level", "off" },
{ "Opteron_G3" "-" TYPE_X86_CPU, "family", "15" },
{ "Opteron_G3" "-" TYPE_X86_CPU, "model", "6" },
{ "Opteron_G3" "-" TYPE_X86_CPU, "stepping", "1" },
{ "isa-pcspk", "migrate", "off" },
};
const size_t pc_compat_2_7_len = G_N_ELEMENTS(pc_compat_2_7);
GlobalProperty pc_compat_2_6[] = {
{ TYPE_X86_CPU, "cpuid-0xb", "off" },
{ "vmxnet3", "romfile", "" },
{ TYPE_X86_CPU, "fill-mtrr-mask", "off" },
{ "apic-common", "legacy-instance-id", "on", }
};
const size_t pc_compat_2_6_len = G_N_ELEMENTS(pc_compat_2_6);
GlobalProperty pc_compat_2_5[] = {};
const size_t pc_compat_2_5_len = G_N_ELEMENTS(pc_compat_2_5);
GlobalProperty pc_compat_2_4[] = {
PC_CPU_MODEL_IDS("2.4.0")
{ "Haswell-" TYPE_X86_CPU, "abm", "off" },
{ "Haswell-noTSX-" TYPE_X86_CPU, "abm", "off" },
{ "Broadwell-" TYPE_X86_CPU, "abm", "off" },
{ "Broadwell-noTSX-" TYPE_X86_CPU, "abm", "off" },
{ "host" "-" TYPE_X86_CPU, "host-cache-info", "on" },
{ TYPE_X86_CPU, "check", "off" },
{ "qemu64" "-" TYPE_X86_CPU, "sse4a", "on" },
{ "qemu64" "-" TYPE_X86_CPU, "abm", "on" },
{ "qemu64" "-" TYPE_X86_CPU, "popcnt", "on" },
{ "qemu32" "-" TYPE_X86_CPU, "popcnt", "on" },
{ "Opteron_G2" "-" TYPE_X86_CPU, "rdtscp", "on" },
{ "Opteron_G3" "-" TYPE_X86_CPU, "rdtscp", "on" },
{ "Opteron_G4" "-" TYPE_X86_CPU, "rdtscp", "on" },
{ "Opteron_G5" "-" TYPE_X86_CPU, "rdtscp", "on", }
};
const size_t pc_compat_2_4_len = G_N_ELEMENTS(pc_compat_2_4);
GlobalProperty pc_compat_2_3[] = {
PC_CPU_MODEL_IDS("2.3.0")
{ TYPE_X86_CPU, "arat", "off" },
{ "qemu64" "-" TYPE_X86_CPU, "min-level", "4" },
{ "kvm64" "-" TYPE_X86_CPU, "min-level", "5" },
{ "pentium3" "-" TYPE_X86_CPU, "min-level", "2" },
{ "n270" "-" TYPE_X86_CPU, "min-level", "5" },
{ "Conroe" "-" TYPE_X86_CPU, "min-level", "4" },
{ "Penryn" "-" TYPE_X86_CPU, "min-level", "4" },
{ "Nehalem" "-" TYPE_X86_CPU, "min-level", "4" },
{ "n270" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "Penryn" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "Conroe" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "Nehalem" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "Westmere" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "SandyBridge" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "IvyBridge" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "Haswell" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "Haswell-noTSX" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "Broadwell" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ "Broadwell-noTSX" "-" TYPE_X86_CPU, "min-xlevel", "0x8000000a" },
{ TYPE_X86_CPU, "kvm-no-smi-migration", "on" },
};
const size_t pc_compat_2_3_len = G_N_ELEMENTS(pc_compat_2_3);
GlobalProperty pc_compat_2_2[] = {
PC_CPU_MODEL_IDS("2.2.0")
{ "kvm64" "-" TYPE_X86_CPU, "vme", "off" },
{ "kvm32" "-" TYPE_X86_CPU, "vme", "off" },
{ "Conroe" "-" TYPE_X86_CPU, "vme", "off" },
{ "Penryn" "-" TYPE_X86_CPU, "vme", "off" },
{ "Nehalem" "-" TYPE_X86_CPU, "vme", "off" },
{ "Westmere" "-" TYPE_X86_CPU, "vme", "off" },
{ "SandyBridge" "-" TYPE_X86_CPU, "vme", "off" },
{ "Haswell" "-" TYPE_X86_CPU, "vme", "off" },
{ "Broadwell" "-" TYPE_X86_CPU, "vme", "off" },
{ "Opteron_G1" "-" TYPE_X86_CPU, "vme", "off" },
{ "Opteron_G2" "-" TYPE_X86_CPU, "vme", "off" },
{ "Opteron_G3" "-" TYPE_X86_CPU, "vme", "off" },
{ "Opteron_G4" "-" TYPE_X86_CPU, "vme", "off" },
{ "Opteron_G5" "-" TYPE_X86_CPU, "vme", "off" },
{ "Haswell" "-" TYPE_X86_CPU, "f16c", "off" },
{ "Haswell" "-" TYPE_X86_CPU, "rdrand", "off" },
{ "Broadwell" "-" TYPE_X86_CPU, "f16c", "off" },
{ "Broadwell" "-" TYPE_X86_CPU, "rdrand", "off" },
};
const size_t pc_compat_2_2_len = G_N_ELEMENTS(pc_compat_2_2);
GlobalProperty pc_compat_2_1[] = {
PC_CPU_MODEL_IDS("2.1.0")
{ "coreduo" "-" TYPE_X86_CPU, "vmx", "on" },
{ "core2duo" "-" TYPE_X86_CPU, "vmx", "on" },
};
const size_t pc_compat_2_1_len = G_N_ELEMENTS(pc_compat_2_1);
GlobalProperty pc_compat_2_0[] = {
PC_CPU_MODEL_IDS("2.0.0")
{ "virtio-scsi-pci", "any_layout", "off" },
{ "PIIX4_PM", "memory-hotplug-support", "off" },
{ "apic", "version", "0x11" },
{ "nec-usb-xhci", "superspeed-ports-first", "off" },
{ "nec-usb-xhci", "force-pcie-endcap", "on" },
{ "pci-serial", "prog_if", "0" },
{ "pci-serial-2x", "prog_if", "0" },
{ "pci-serial-4x", "prog_if", "0" },
{ "virtio-net-pci", "guest_announce", "off" },
{ "ICH9-LPC", "memory-hotplug-support", "off" },
{ "xio3130-downstream", COMPAT_PROP_PCP, "off" },
{ "ioh3420", COMPAT_PROP_PCP, "off" },
};
const size_t pc_compat_2_0_len = G_N_ELEMENTS(pc_compat_2_0);
GlobalProperty pc_compat_1_7[] = {
PC_CPU_MODEL_IDS("1.7.0")
{ TYPE_USB_DEVICE, "msos-desc", "no" },
{ "PIIX4_PM", "acpi-pci-hotplug-with-bridge-support", "off" },
{ "hpet", HPET_INTCAP, "4" },
};
const size_t pc_compat_1_7_len = G_N_ELEMENTS(pc_compat_1_7);
GlobalProperty pc_compat_1_6[] = {
PC_CPU_MODEL_IDS("1.6.0")
{ "e1000", "mitigation", "off" },
{ "qemu64-" TYPE_X86_CPU, "model", "2" },
{ "qemu32-" TYPE_X86_CPU, "model", "3" },
{ "i440FX-pcihost", "short_root_bus", "1" },
{ "q35-pcihost", "short_root_bus", "1" },
};
const size_t pc_compat_1_6_len = G_N_ELEMENTS(pc_compat_1_6);
GlobalProperty pc_compat_1_5[] = {
PC_CPU_MODEL_IDS("1.5.0")
{ "Conroe-" TYPE_X86_CPU, "model", "2" },
{ "Conroe-" TYPE_X86_CPU, "min-level", "2" },
{ "Penryn-" TYPE_X86_CPU, "model", "2" },
{ "Penryn-" TYPE_X86_CPU, "min-level", "2" },
{ "Nehalem-" TYPE_X86_CPU, "model", "2" },
{ "Nehalem-" TYPE_X86_CPU, "min-level", "2" },
{ "virtio-net-pci", "any_layout", "off" },
{ TYPE_X86_CPU, "pmu", "on" },
{ "i440FX-pcihost", "short_root_bus", "0" },
{ "q35-pcihost", "short_root_bus", "0" },
};
const size_t pc_compat_1_5_len = G_N_ELEMENTS(pc_compat_1_5);
GlobalProperty pc_compat_1_4[] = {
PC_CPU_MODEL_IDS("1.4.0")
{ "scsi-hd", "discard_granularity", "0" },
{ "scsi-cd", "discard_granularity", "0" },
{ "scsi-disk", "discard_granularity", "0" },
{ "ide-hd", "discard_granularity", "0" },
{ "ide-cd", "discard_granularity", "0" },
{ "ide-drive", "discard_granularity", "0" },
{ "virtio-blk-pci", "discard_granularity", "0" },
/* DEV_NVECTORS_UNSPECIFIED as a uint32_t string: */
{ "virtio-serial-pci", "vectors", "0xFFFFFFFF" },
{ "virtio-net-pci", "ctrl_guest_offloads", "off" },
{ "e1000", "romfile", "pxe-e1000.rom" },
{ "ne2k_pci", "romfile", "pxe-ne2k_pci.rom" },
{ "pcnet", "romfile", "pxe-pcnet.rom" },
{ "rtl8139", "romfile", "pxe-rtl8139.rom" },
{ "virtio-net-pci", "romfile", "pxe-virtio.rom" },
{ "486-" TYPE_X86_CPU, "model", "0" },
{ "n270" "-" TYPE_X86_CPU, "movbe", "off" },
{ "Westmere" "-" TYPE_X86_CPU, "pclmulqdq", "off" },
};
const size_t pc_compat_1_4_len = G_N_ELEMENTS(pc_compat_1_4);
GSIState *pc_gsi_create(qemu_irq **irqs, bool pci_enabled)
{
GSIState *s;
s = g_new0(GSIState, 1);
if (kvm_ioapic_in_kernel()) {
kvm_pc_setup_irq_routing(pci_enabled);
}
*irqs = qemu_allocate_irqs(gsi_handler, s, GSI_NUM_PINS);
return s;
}
static void ioport80_write(void *opaque, hwaddr addr, uint64_t data,
unsigned size)
{
}
static uint64_t ioport80_read(void *opaque, hwaddr addr, unsigned size)
{
return 0xffffffffffffffffULL;
}
/* MSDOS compatibility mode FPU exception support */
static void ioportF0_write(void *opaque, hwaddr addr, uint64_t data,
unsigned size)
{
if (tcg_enabled()) {
cpu_set_ignne();
}
}
static uint64_t ioportF0_read(void *opaque, hwaddr addr, unsigned size)
{
return 0xffffffffffffffffULL;
}
/* PC cmos mappings */
#define REG_EQUIPMENT_BYTE 0x14
int cmos_get_fd_drive_type(FloppyDriveType fd0)
{
int val;
switch (fd0) {
case FLOPPY_DRIVE_TYPE_144:
/* 1.44 Mb 3"5 drive */
val = 4;
break;
case FLOPPY_DRIVE_TYPE_288:
/* 2.88 Mb 3"5 drive */
val = 5;
break;
case FLOPPY_DRIVE_TYPE_120:
/* 1.2 Mb 5"5 drive */
val = 2;
break;
case FLOPPY_DRIVE_TYPE_NONE:
default:
val = 0;
break;
}
return val;
}
static void cmos_init_hd(ISADevice *s, int type_ofs, int info_ofs,
int16_t cylinders, int8_t heads, int8_t sectors)
{
rtc_set_memory(s, type_ofs, 47);
rtc_set_memory(s, info_ofs, cylinders);
rtc_set_memory(s, info_ofs + 1, cylinders >> 8);
rtc_set_memory(s, info_ofs + 2, heads);
rtc_set_memory(s, info_ofs + 3, 0xff);
rtc_set_memory(s, info_ofs + 4, 0xff);
rtc_set_memory(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
rtc_set_memory(s, info_ofs + 6, cylinders);
rtc_set_memory(s, info_ofs + 7, cylinders >> 8);
rtc_set_memory(s, info_ofs + 8, sectors);
}
/* convert boot_device letter to something recognizable by the bios */
static int boot_device2nibble(char boot_device)
{
switch(boot_device) {
case 'a':
case 'b':
return 0x01; /* floppy boot */
case 'c':
return 0x02; /* hard drive boot */
case 'd':
return 0x03; /* CD-ROM boot */
case 'n':
return 0x04; /* Network boot */
}
return 0;
}
static void set_boot_dev(ISADevice *s, const char *boot_device, Error **errp)
{
#define PC_MAX_BOOT_DEVICES 3
int nbds, bds[3] = { 0, };
int i;
nbds = strlen(boot_device);
if (nbds > PC_MAX_BOOT_DEVICES) {
error_setg(errp, "Too many boot devices for PC");
return;
}
for (i = 0; i < nbds; i++) {
bds[i] = boot_device2nibble(boot_device[i]);
if (bds[i] == 0) {
error_setg(errp, "Invalid boot device for PC: '%c'",
boot_device[i]);
return;
}
}
rtc_set_memory(s, 0x3d, (bds[1] << 4) | bds[0]);
rtc_set_memory(s, 0x38, (bds[2] << 4) | (fd_bootchk ? 0x0 : 0x1));
}
static void pc_boot_set(void *opaque, const char *boot_device, Error **errp)
{
set_boot_dev(opaque, boot_device, errp);
}
static void pc_cmos_init_floppy(ISADevice *rtc_state, ISADevice *floppy)
{
int val, nb, i;
FloppyDriveType fd_type[2] = { FLOPPY_DRIVE_TYPE_NONE,
FLOPPY_DRIVE_TYPE_NONE };
/* floppy type */
if (floppy) {
for (i = 0; i < 2; i++) {
fd_type[i] = isa_fdc_get_drive_type(floppy, i);
}
}
val = (cmos_get_fd_drive_type(fd_type[0]) << 4) |
cmos_get_fd_drive_type(fd_type[1]);
rtc_set_memory(rtc_state, 0x10, val);
val = rtc_get_memory(rtc_state, REG_EQUIPMENT_BYTE);
nb = 0;
if (fd_type[0] != FLOPPY_DRIVE_TYPE_NONE) {
nb++;
}
if (fd_type[1] != FLOPPY_DRIVE_TYPE_NONE) {
nb++;
}
switch (nb) {
case 0:
break;
case 1:
val |= 0x01; /* 1 drive, ready for boot */
break;
case 2:
val |= 0x41; /* 2 drives, ready for boot */
break;
}
rtc_set_memory(rtc_state, REG_EQUIPMENT_BYTE, val);
}
typedef struct pc_cmos_init_late_arg {
ISADevice *rtc_state;
BusState *idebus[2];
} pc_cmos_init_late_arg;
typedef struct check_fdc_state {
ISADevice *floppy;
bool multiple;
} CheckFdcState;
static int check_fdc(Object *obj, void *opaque)
{
CheckFdcState *state = opaque;
Object *fdc;
uint32_t iobase;
Error *local_err = NULL;
fdc = object_dynamic_cast(obj, TYPE_ISA_FDC);
if (!fdc) {
return 0;
}
iobase = object_property_get_uint(obj, "iobase", &local_err);
if (local_err || iobase != 0x3f0) {
error_free(local_err);
return 0;
}
if (state->floppy) {
state->multiple = true;
} else {
state->floppy = ISA_DEVICE(obj);
}
return 0;
}
static const char * const fdc_container_path[] = {
"/unattached", "/peripheral", "/peripheral-anon"
};
/*
* Locate the FDC at IO address 0x3f0, in order to configure the CMOS registers
* and ACPI objects.
*/
ISADevice *pc_find_fdc0(void)
{
int i;
Object *container;
CheckFdcState state = { 0 };
for (i = 0; i < ARRAY_SIZE(fdc_container_path); i++) {
container = container_get(qdev_get_machine(), fdc_container_path[i]);
object_child_foreach(container, check_fdc, &state);
}
if (state.multiple) {
warn_report("multiple floppy disk controllers with "
"iobase=0x3f0 have been found");
error_printf("the one being picked for CMOS setup might not reflect "
"your intent");
}
return state.floppy;
}
static void pc_cmos_init_late(void *opaque)
{
pc_cmos_init_late_arg *arg = opaque;
ISADevice *s = arg->rtc_state;
int16_t cylinders;
int8_t heads, sectors;
int val;
int i, trans;
val = 0;
if (arg->idebus[0] && ide_get_geometry(arg->idebus[0], 0,
&cylinders, &heads, &sectors) >= 0) {
cmos_init_hd(s, 0x19, 0x1b, cylinders, heads, sectors);
val |= 0xf0;
}
if (arg->idebus[0] && ide_get_geometry(arg->idebus[0], 1,
&cylinders, &heads, &sectors) >= 0) {
cmos_init_hd(s, 0x1a, 0x24, cylinders, heads, sectors);
val |= 0x0f;
}
rtc_set_memory(s, 0x12, val);
val = 0;
for (i = 0; i < 4; i++) {
/* NOTE: ide_get_geometry() returns the physical
geometry. It is always such that: 1 <= sects <= 63, 1
<= heads <= 16, 1 <= cylinders <= 16383. The BIOS
geometry can be different if a translation is done. */
if (arg->idebus[i / 2] &&
ide_get_geometry(arg->idebus[i / 2], i % 2,
&cylinders, &heads, &sectors) >= 0) {
trans = ide_get_bios_chs_trans(arg->idebus[i / 2], i % 2) - 1;
assert((trans & ~3) == 0);
val |= trans << (i * 2);
}
}
rtc_set_memory(s, 0x39, val);
pc_cmos_init_floppy(s, pc_find_fdc0());
qemu_unregister_reset(pc_cmos_init_late, opaque);
}
void pc_cmos_init(PCMachineState *pcms,
BusState *idebus0, BusState *idebus1,
ISADevice *s)
{
int val;
static pc_cmos_init_late_arg arg;
X86MachineState *x86ms = X86_MACHINE(pcms);
/* various important CMOS locations needed by PC/Bochs bios */
/* memory size */
/* base memory (first MiB) */
val = MIN(x86ms->below_4g_mem_size / KiB, 640);
rtc_set_memory(s, 0x15, val);
rtc_set_memory(s, 0x16, val >> 8);
/* extended memory (next 64MiB) */
if (x86ms->below_4g_mem_size > 1 * MiB) {
val = (x86ms->below_4g_mem_size - 1 * MiB) / KiB;
} else {
val = 0;
}
if (val > 65535)
val = 65535;
rtc_set_memory(s, 0x17, val);
rtc_set_memory(s, 0x18, val >> 8);
rtc_set_memory(s, 0x30, val);
rtc_set_memory(s, 0x31, val >> 8);
/* memory between 16MiB and 4GiB */
if (x86ms->below_4g_mem_size > 16 * MiB) {
val = (x86ms->below_4g_mem_size - 16 * MiB) / (64 * KiB);
} else {
val = 0;
}
if (val > 65535)
val = 65535;
rtc_set_memory(s, 0x34, val);
rtc_set_memory(s, 0x35, val >> 8);
/* memory above 4GiB */
val = x86ms->above_4g_mem_size / 65536;
rtc_set_memory(s, 0x5b, val);
rtc_set_memory(s, 0x5c, val >> 8);
rtc_set_memory(s, 0x5d, val >> 16);
object_property_add_link(OBJECT(pcms), "rtc_state",
TYPE_ISA_DEVICE,
(Object **)&x86ms->rtc,
object_property_allow_set_link,
OBJ_PROP_LINK_STRONG);
object_property_set_link(OBJECT(pcms), OBJECT(s),
"rtc_state", &error_abort);
set_boot_dev(s, MACHINE(pcms)->boot_order, &error_fatal);
val = 0;
val |= 0x02; /* FPU is there */
val |= 0x04; /* PS/2 mouse installed */
rtc_set_memory(s, REG_EQUIPMENT_BYTE, val);
/* hard drives and FDC */
arg.rtc_state = s;
arg.idebus[0] = idebus0;
arg.idebus[1] = idebus1;
qemu_register_reset(pc_cmos_init_late, &arg);
}
static void handle_a20_line_change(void *opaque, int irq, int level)
{
X86CPU *cpu = opaque;
/* XXX: send to all CPUs ? */
/* XXX: add logic to handle multiple A20 line sources */
x86_cpu_set_a20(cpu, level);
}
#define NE2000_NB_MAX 6
static const int ne2000_io[NE2000_NB_MAX] = { 0x300, 0x320, 0x340, 0x360,
0x280, 0x380 };
static const int ne2000_irq[NE2000_NB_MAX] = { 9, 10, 11, 3, 4, 5 };
void pc_init_ne2k_isa(ISABus *bus, NICInfo *nd)
{
static int nb_ne2k = 0;
if (nb_ne2k == NE2000_NB_MAX)
return;
isa_ne2000_init(bus, ne2000_io[nb_ne2k],
ne2000_irq[nb_ne2k], nd);
nb_ne2k++;
}
void pc_acpi_smi_interrupt(void *opaque, int irq, int level)
{
X86CPU *cpu = opaque;
if (level) {
cpu_interrupt(CPU(cpu), CPU_INTERRUPT_SMI);
}
}
/*
* This function is very similar to smp_parse()
* in hw/core/machine.c but includes CPU die support.
*/
void pc_smp_parse(MachineState *ms, QemuOpts *opts)
{
X86MachineState *x86ms = X86_MACHINE(ms);
if (opts) {
unsigned cpus = qemu_opt_get_number(opts, "cpus", 0);
unsigned sockets = qemu_opt_get_number(opts, "sockets", 0);
unsigned dies = qemu_opt_get_number(opts, "dies", 1);
unsigned cores = qemu_opt_get_number(opts, "cores", 0);
unsigned threads = qemu_opt_get_number(opts, "threads", 0);
/* compute missing values, prefer sockets over cores over threads */
if (cpus == 0 || sockets == 0) {
cores = cores > 0 ? cores : 1;
threads = threads > 0 ? threads : 1;
if (cpus == 0) {
sockets = sockets > 0 ? sockets : 1;
cpus = cores * threads * dies * sockets;
} else {
ms->smp.max_cpus =
qemu_opt_get_number(opts, "maxcpus", cpus);
sockets = ms->smp.max_cpus / (cores * threads * dies);
}
} else if (cores == 0) {
threads = threads > 0 ? threads : 1;
cores = cpus / (sockets * dies * threads);
cores = cores > 0 ? cores : 1;
} else if (threads == 0) {
threads = cpus / (cores * dies * sockets);
threads = threads > 0 ? threads : 1;
} else if (sockets * dies * cores * threads < cpus) {
error_report("cpu topology: "
"sockets (%u) * dies (%u) * cores (%u) * threads (%u) < "
"smp_cpus (%u)",
sockets, dies, cores, threads, cpus);
exit(1);
}
ms->smp.max_cpus =
qemu_opt_get_number(opts, "maxcpus", cpus);
if (ms->smp.max_cpus < cpus) {
error_report("maxcpus must be equal to or greater than smp");
exit(1);
}
if (sockets * dies * cores * threads > ms->smp.max_cpus) {
error_report("cpu topology: "
"sockets (%u) * dies (%u) * cores (%u) * threads (%u) > "
"maxcpus (%u)",
sockets, dies, cores, threads,
ms->smp.max_cpus);
exit(1);
}
if (sockets * dies * cores * threads != ms->smp.max_cpus) {
warn_report("Invalid CPU topology deprecated: "
"sockets (%u) * dies (%u) * cores (%u) * threads (%u) "
"!= maxcpus (%u)",
sockets, dies, cores, threads,
ms->smp.max_cpus);
}
ms->smp.cpus = cpus;
ms->smp.cores = cores;
ms->smp.threads = threads;
ms->smp.sockets = sockets;
x86ms->smp_dies = dies;
}
if (ms->smp.cpus > 1) {
Error *blocker = NULL;
error_setg(&blocker, QERR_REPLAY_NOT_SUPPORTED, "smp");
replay_add_blocker(blocker);
}
}
void pc_hot_add_cpu(MachineState *ms, const int64_t id, Error **errp)
{
X86MachineState *x86ms = X86_MACHINE(ms);
int64_t apic_id = x86_cpu_apic_id_from_index(x86ms, id);
Error *local_err = NULL;
if (id < 0) {
error_setg(errp, "Invalid CPU id: %" PRIi64, id);
return;
}
if (apic_id >= ACPI_CPU_HOTPLUG_ID_LIMIT) {
error_setg(errp, "Unable to add CPU: %" PRIi64
", resulting APIC ID (%" PRIi64 ") is too large",
id, apic_id);
return;
}
x86_cpu_new(X86_MACHINE(ms), apic_id, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
}
static void rtc_set_cpus_count(ISADevice *rtc, uint16_t cpus_count)
{
if (cpus_count > 0xff) {
/* If the number of CPUs can't be represented in 8 bits, the
* BIOS must use "FW_CFG_NB_CPUS". Set RTC field to 0 just
* to make old BIOSes fail more predictably.
*/
rtc_set_memory(rtc, 0x5f, 0);
} else {
rtc_set_memory(rtc, 0x5f, cpus_count - 1);
}
}
static
void pc_machine_done(Notifier *notifier, void *data)
{
PCMachineState *pcms = container_of(notifier,
PCMachineState, machine_done);
X86MachineState *x86ms = X86_MACHINE(pcms);
PCIBus *bus = pcms->bus;
/* set the number of CPUs */
rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
if (bus) {
int extra_hosts = 0;
QLIST_FOREACH(bus, &bus->child, sibling) {
/* look for expander root buses */
if (pci_bus_is_root(bus)) {
extra_hosts++;
}
}
if (extra_hosts && x86ms->fw_cfg) {
uint64_t *val = g_malloc(sizeof(*val));
*val = cpu_to_le64(extra_hosts);
fw_cfg_add_file(x86ms->fw_cfg,
"etc/extra-pci-roots", val, sizeof(*val));
}
}
acpi_setup();
if (x86ms->fw_cfg) {
fw_cfg_build_smbios(MACHINE(pcms), x86ms->fw_cfg);
fw_cfg_build_feature_control(MACHINE(pcms), x86ms->fw_cfg);
/* update FW_CFG_NB_CPUS to account for -device added CPUs */
fw_cfg_modify_i16(x86ms->fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
}
if (x86ms->apic_id_limit > 255 && !xen_enabled()) {
IntelIOMMUState *iommu = INTEL_IOMMU_DEVICE(x86_iommu_get_default());
if (!iommu || !x86_iommu_ir_supported(X86_IOMMU_DEVICE(iommu)) ||
iommu->intr_eim != ON_OFF_AUTO_ON) {
error_report("current -smp configuration requires "
"Extended Interrupt Mode enabled. "
"You can add an IOMMU using: "
"-device intel-iommu,intremap=on,eim=on");
exit(EXIT_FAILURE);
}
}
}
void pc_guest_info_init(PCMachineState *pcms)
{
int i;
MachineState *ms = MACHINE(pcms);
X86MachineState *x86ms = X86_MACHINE(pcms);
x86ms->apic_xrupt_override = kvm_allows_irq0_override();
pcms->numa_nodes = ms->numa_state->num_nodes;
pcms->node_mem = g_malloc0(pcms->numa_nodes *
sizeof *pcms->node_mem);
for (i = 0; i < ms->numa_state->num_nodes; i++) {
pcms->node_mem[i] = ms->numa_state->nodes[i].node_mem;
}
pcms->machine_done.notify = pc_machine_done;
qemu_add_machine_init_done_notifier(&pcms->machine_done);
}
/* setup pci memory address space mapping into system address space */
void pc_pci_as_mapping_init(Object *owner, MemoryRegion *system_memory,
MemoryRegion *pci_address_space)
{
/* Set to lower priority than RAM */
memory_region_add_subregion_overlap(system_memory, 0x0,
pci_address_space, -1);
}
void xen_load_linux(PCMachineState *pcms)
{
int i;
FWCfgState *fw_cfg;
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
X86MachineState *x86ms = X86_MACHINE(pcms);
assert(MACHINE(pcms)->kernel_filename != NULL);
fw_cfg = fw_cfg_init_io(FW_CFG_IO_BASE);
fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
rom_set_fw(fw_cfg);
x86_load_linux(x86ms, fw_cfg, pcmc->acpi_data_size,
pcmc->pvh_enabled, pcmc->linuxboot_dma_enabled);
for (i = 0; i < nb_option_roms; i++) {
assert(!strcmp(option_rom[i].name, "linuxboot.bin") ||
!strcmp(option_rom[i].name, "linuxboot_dma.bin") ||
!strcmp(option_rom[i].name, "pvh.bin") ||
!strcmp(option_rom[i].name, "multiboot.bin"));
rom_add_option(option_rom[i].name, option_rom[i].bootindex);
}
x86ms->fw_cfg = fw_cfg;
}
void pc_memory_init(PCMachineState *pcms,
MemoryRegion *system_memory,
MemoryRegion *rom_memory,
MemoryRegion **ram_memory)
{
int linux_boot, i;
MemoryRegion *option_rom_mr;
MemoryRegion *ram_below_4g, *ram_above_4g;
FWCfgState *fw_cfg;
MachineState *machine = MACHINE(pcms);
MachineClass *mc = MACHINE_GET_CLASS(machine);
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
X86MachineState *x86ms = X86_MACHINE(pcms);
assert(machine->ram_size == x86ms->below_4g_mem_size +
x86ms->above_4g_mem_size);
linux_boot = (machine->kernel_filename != NULL);
/*
* Split single memory region and use aliases to address portions of it,
* done for backwards compatibility with older qemus.
*/
*ram_memory = machine->ram;
ram_below_4g = g_malloc(sizeof(*ram_below_4g));
memory_region_init_alias(ram_below_4g, NULL, "ram-below-4g", machine->ram,
0, x86ms->below_4g_mem_size);
memory_region_add_subregion(system_memory, 0, ram_below_4g);
e820_add_entry(0, x86ms->below_4g_mem_size, E820_RAM);
if (x86ms->above_4g_mem_size > 0) {
ram_above_4g = g_malloc(sizeof(*ram_above_4g));
memory_region_init_alias(ram_above_4g, NULL, "ram-above-4g",
machine->ram,
x86ms->below_4g_mem_size,
x86ms->above_4g_mem_size);
memory_region_add_subregion(system_memory, 0x100000000ULL,
ram_above_4g);
e820_add_entry(0x100000000ULL, x86ms->above_4g_mem_size, E820_RAM);
}
if (!pcmc->has_reserved_memory &&
(machine->ram_slots ||
(machine->maxram_size > machine->ram_size))) {
error_report("\"-memory 'slots|maxmem'\" is not supported by: %s",
mc->name);
exit(EXIT_FAILURE);
}
/* always allocate the device memory information */
machine->device_memory = g_malloc0(sizeof(*machine->device_memory));
/* initialize device memory address space */
if (pcmc->has_reserved_memory &&
(machine->ram_size < machine->maxram_size)) {
ram_addr_t device_mem_size = machine->maxram_size - machine->ram_size;
if (machine->ram_slots > ACPI_MAX_RAM_SLOTS) {
error_report("unsupported amount of memory slots: %"PRIu64,
machine->ram_slots);
exit(EXIT_FAILURE);
}
if (QEMU_ALIGN_UP(machine->maxram_size,
TARGET_PAGE_SIZE) != machine->maxram_size) {
error_report("maximum memory size must by aligned to multiple of "
"%d bytes", TARGET_PAGE_SIZE);
exit(EXIT_FAILURE);
}
machine->device_memory->base =
ROUND_UP(0x100000000ULL + x86ms->above_4g_mem_size, 1 * GiB);
if (pcmc->enforce_aligned_dimm) {
/* size device region assuming 1G page max alignment per slot */
device_mem_size += (1 * GiB) * machine->ram_slots;
}
if ((machine->device_memory->base + device_mem_size) <
device_mem_size) {
error_report("unsupported amount of maximum memory: " RAM_ADDR_FMT,
machine->maxram_size);
exit(EXIT_FAILURE);
}
memory_region_init(&machine->device_memory->mr, OBJECT(pcms),
"device-memory", device_mem_size);
memory_region_add_subregion(system_memory, machine->device_memory->base,
&machine->device_memory->mr);
}
/* Initialize PC system firmware */
pc_system_firmware_init(pcms, rom_memory);
option_rom_mr = g_malloc(sizeof(*option_rom_mr));
memory_region_init_ram(option_rom_mr, NULL, "pc.rom", PC_ROM_SIZE,
&error_fatal);
if (pcmc->pci_enabled) {
memory_region_set_readonly(option_rom_mr, true);
}
memory_region_add_subregion_overlap(rom_memory,
PC_ROM_MIN_VGA,
option_rom_mr,
1);
fw_cfg = fw_cfg_arch_create(machine,
x86ms->boot_cpus, x86ms->apic_id_limit);
rom_set_fw(fw_cfg);
if (pcmc->has_reserved_memory && machine->device_memory->base) {
uint64_t *val = g_malloc(sizeof(*val));
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
uint64_t res_mem_end = machine->device_memory->base;
if (!pcmc->broken_reserved_end) {
res_mem_end += memory_region_size(&machine->device_memory->mr);
}
*val = cpu_to_le64(ROUND_UP(res_mem_end, 1 * GiB));
fw_cfg_add_file(fw_cfg, "etc/reserved-memory-end", val, sizeof(*val));
}
if (linux_boot) {
x86_load_linux(x86ms, fw_cfg, pcmc->acpi_data_size,
pcmc->pvh_enabled, pcmc->linuxboot_dma_enabled);
}
for (i = 0; i < nb_option_roms; i++) {
rom_add_option(option_rom[i].name, option_rom[i].bootindex);
}
x86ms->fw_cfg = fw_cfg;
/* Init default IOAPIC address space */
x86ms->ioapic_as = &address_space_memory;
/* Init ACPI memory hotplug IO base address */
pcms->memhp_io_base = ACPI_MEMORY_HOTPLUG_BASE;
}
/*
* The 64bit pci hole starts after "above 4G RAM" and
* potentially the space reserved for memory hotplug.
*/
uint64_t pc_pci_hole64_start(void)
{
PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
MachineState *ms = MACHINE(pcms);
X86MachineState *x86ms = X86_MACHINE(pcms);
uint64_t hole64_start = 0;
if (pcmc->has_reserved_memory && ms->device_memory->base) {
hole64_start = ms->device_memory->base;
if (!pcmc->broken_reserved_end) {
hole64_start += memory_region_size(&ms->device_memory->mr);
}
} else {
hole64_start = 0x100000000ULL + x86ms->above_4g_mem_size;
}
return ROUND_UP(hole64_start, 1 * GiB);
}
DeviceState *pc_vga_init(ISABus *isa_bus, PCIBus *pci_bus)
{
DeviceState *dev = NULL;
rom_set_order_override(FW_CFG_ORDER_OVERRIDE_VGA);
if (pci_bus) {
PCIDevice *pcidev = pci_vga_init(pci_bus);
dev = pcidev ? &pcidev->qdev : NULL;
} else if (isa_bus) {
ISADevice *isadev = isa_vga_init(isa_bus);
dev = isadev ? DEVICE(isadev) : NULL;
}
rom_reset_order_override();
return dev;
}
static const MemoryRegionOps ioport80_io_ops = {
.write = ioport80_write,
.read = ioport80_read,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
static const MemoryRegionOps ioportF0_io_ops = {
.write = ioportF0_write,
.read = ioportF0_read,
.endianness = DEVICE_NATIVE_ENDIAN,
.impl = {
.min_access_size = 1,
.max_access_size = 1,
},
};
static void pc_superio_init(ISABus *isa_bus, bool create_fdctrl, bool no_vmport)
{
int i;
DriveInfo *fd[MAX_FD];
qemu_irq *a20_line;
ISADevice *i8042, *port92, *vmmouse;
serial_hds_isa_init(isa_bus, 0, MAX_ISA_SERIAL_PORTS);
parallel_hds_isa_init(isa_bus, MAX_PARALLEL_PORTS);
for (i = 0; i < MAX_FD; i++) {
fd[i] = drive_get(IF_FLOPPY, 0, i);
create_fdctrl |= !!fd[i];
}
if (create_fdctrl) {
fdctrl_init_isa(isa_bus, fd);
}
i8042 = isa_create_simple(isa_bus, "i8042");
if (!no_vmport) {
isa_create_simple(isa_bus, TYPE_VMPORT);
vmmouse = isa_try_create(isa_bus, "vmmouse");
} else {
vmmouse = NULL;
}
if (vmmouse) {
object_property_set_link(OBJECT(vmmouse), OBJECT(i8042),
"i8042", &error_abort);
qdev_init_nofail(DEVICE(vmmouse));
}
port92 = isa_create_simple(isa_bus, TYPE_PORT92);
a20_line = qemu_allocate_irqs(handle_a20_line_change, first_cpu, 2);
i8042_setup_a20_line(i8042, a20_line[0]);
qdev_connect_gpio_out_named(DEVICE(port92),
PORT92_A20_LINE, 0, a20_line[1]);
g_free(a20_line);
}
void pc_basic_device_init(ISABus *isa_bus, qemu_irq *gsi,
ISADevice **rtc_state,
bool create_fdctrl,
bool no_vmport,
bool has_pit,
uint32_t hpet_irqs)
{
int i;
DeviceState *hpet = NULL;
int pit_isa_irq = 0;
qemu_irq pit_alt_irq = NULL;
qemu_irq rtc_irq = NULL;
ISADevice *pit = NULL;
MemoryRegion *ioport80_io = g_new(MemoryRegion, 1);
MemoryRegion *ioportF0_io = g_new(MemoryRegion, 1);
memory_region_init_io(ioport80_io, NULL, &ioport80_io_ops, NULL, "ioport80", 1);
memory_region_add_subregion(isa_bus->address_space_io, 0x80, ioport80_io);
memory_region_init_io(ioportF0_io, NULL, &ioportF0_io_ops, NULL, "ioportF0", 1);
memory_region_add_subregion(isa_bus->address_space_io, 0xf0, ioportF0_io);
/*
* Check if an HPET shall be created.
*
* Without KVM_CAP_PIT_STATE2, we cannot switch off the in-kernel PIT
* when the HPET wants to take over. Thus we have to disable the latter.
*/
if (!no_hpet && (!kvm_irqchip_in_kernel() || kvm_has_pit_state2())) {
hpet = qdev_try_create(NULL, TYPE_HPET);
if (hpet) {
/* For pc-piix-*, hpet's intcap is always IRQ2. For pc-q35-1.7
* and earlier, use IRQ2 for compat. Otherwise, use IRQ16~23,
* IRQ8 and IRQ2.
*/
uint8_t compat = object_property_get_uint(OBJECT(hpet),
HPET_INTCAP, NULL);
if (!compat) {
qdev_prop_set_uint32(hpet, HPET_INTCAP, hpet_irqs);
}
qdev_init_nofail(hpet);
sysbus_mmio_map(SYS_BUS_DEVICE(hpet), 0, HPET_BASE);
for (i = 0; i < GSI_NUM_PINS; i++) {
sysbus_connect_irq(SYS_BUS_DEVICE(hpet), i, gsi[i]);
}
pit_isa_irq = -1;
pit_alt_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_PIT_INT);
rtc_irq = qdev_get_gpio_in(hpet, HPET_LEGACY_RTC_INT);
}
}
*rtc_state = mc146818_rtc_init(isa_bus, 2000, rtc_irq);
qemu_register_boot_set(pc_boot_set, *rtc_state);
if (!xen_enabled() && has_pit) {
if (kvm_pit_in_kernel()) {
pit = kvm_pit_init(isa_bus, 0x40);
} else {
pit = i8254_pit_init(isa_bus, 0x40, pit_isa_irq, pit_alt_irq);
}
if (hpet) {
/* connect PIT to output control line of the HPET */
qdev_connect_gpio_out(hpet, 0, qdev_get_gpio_in(DEVICE(pit), 0));
}
pcspk_init(isa_bus, pit);
}
i8257_dma_init(isa_bus, 0);
/* Super I/O */
pc_superio_init(isa_bus, create_fdctrl, no_vmport);
}
void pc_nic_init(PCMachineClass *pcmc, ISABus *isa_bus, PCIBus *pci_bus)
{
int i;
rom_set_order_override(FW_CFG_ORDER_OVERRIDE_NIC);
for (i = 0; i < nb_nics; i++) {
NICInfo *nd = &nd_table[i];
const char *model = nd->model ? nd->model : pcmc->default_nic_model;
if (g_str_equal(model, "ne2k_isa")) {
pc_init_ne2k_isa(isa_bus, nd);
} else {
pci_nic_init_nofail(nd, pci_bus, model, NULL);
}
}
rom_reset_order_override();
}
void pc_i8259_create(ISABus *isa_bus, qemu_irq *i8259_irqs)
{
qemu_irq *i8259;
if (kvm_pic_in_kernel()) {
i8259 = kvm_i8259_init(isa_bus);
} else if (xen_enabled()) {
i8259 = xen_interrupt_controller_init();
} else {
i8259 = i8259_init(isa_bus, x86_allocate_cpu_irq());
}
for (size_t i = 0; i < ISA_NUM_IRQS; i++) {
i8259_irqs[i] = i8259[i];
}
g_free(i8259);
}
static void pc_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev,
Error **errp)
{
const PCMachineState *pcms = PC_MACHINE(hotplug_dev);
const PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
const MachineState *ms = MACHINE(hotplug_dev);
const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
const uint64_t legacy_align = TARGET_PAGE_SIZE;
Error *local_err = NULL;
/*
* When -no-acpi is used with Q35 machine type, no ACPI is built,
* but pcms->acpi_dev is still created. Check !acpi_enabled in
* addition to cover this case.
*/
if (!pcms->acpi_dev || !x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
error_setg(errp,
"memory hotplug is not enabled: missing acpi device or acpi disabled");
return;
}
if (is_nvdimm && !ms->nvdimms_state->is_enabled) {
error_setg(errp, "nvdimm is not enabled: missing 'nvdimm' in '-M'");
return;
}
hotplug_handler_pre_plug(pcms->acpi_dev, dev, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev),
pcmc->enforce_aligned_dimm ? NULL : &legacy_align, errp);
}
static void pc_memory_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
Error *local_err = NULL;
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
MachineState *ms = MACHINE(hotplug_dev);
bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
pc_dimm_plug(PC_DIMM(dev), MACHINE(pcms), &local_err);
if (local_err) {
goto out;
}
if (is_nvdimm) {
nvdimm_plug(ms->nvdimms_state);
}
hotplug_handler_plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &error_abort);
out:
error_propagate(errp, local_err);
}
static void pc_memory_unplug_request(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
Error *local_err = NULL;
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
/*
* When -no-acpi is used with Q35 machine type, no ACPI is built,
* but pcms->acpi_dev is still created. Check !acpi_enabled in
* addition to cover this case.
*/
if (!pcms->acpi_dev || !x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
error_setg(&local_err,
"memory hotplug is not enabled: missing acpi device or acpi disabled");
goto out;
}
if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
error_setg(&local_err,
"nvdimm device hot unplug is not supported yet.");
goto out;
}
hotplug_handler_unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev,
&local_err);
out:
error_propagate(errp, local_err);
}
static void pc_memory_unplug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
Error *local_err = NULL;
hotplug_handler_unplug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err);
if (local_err) {
goto out;
}
pc_dimm_unplug(PC_DIMM(dev), MACHINE(pcms));
object_property_set_bool(OBJECT(dev), false, "realized", &error_abort);
out:
error_propagate(errp, local_err);
}
static int pc_apic_cmp(const void *a, const void *b)
{
CPUArchId *apic_a = (CPUArchId *)a;
CPUArchId *apic_b = (CPUArchId *)b;
return apic_a->arch_id - apic_b->arch_id;
}
/* returns pointer to CPUArchId descriptor that matches CPU's apic_id
* in ms->possible_cpus->cpus, if ms->possible_cpus->cpus has no
* entry corresponding to CPU's apic_id returns NULL.
*/
static CPUArchId *pc_find_cpu_slot(MachineState *ms, uint32_t id, int *idx)
{
CPUArchId apic_id, *found_cpu;
apic_id.arch_id = id;
found_cpu = bsearch(&apic_id, ms->possible_cpus->cpus,
ms->possible_cpus->len, sizeof(*ms->possible_cpus->cpus),
pc_apic_cmp);
if (found_cpu && idx) {
*idx = found_cpu - ms->possible_cpus->cpus;
}
return found_cpu;
}
static void pc_cpu_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
CPUArchId *found_cpu;
Error *local_err = NULL;
X86CPU *cpu = X86_CPU(dev);
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
X86MachineState *x86ms = X86_MACHINE(pcms);
if (pcms->acpi_dev) {
hotplug_handler_plug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err);
if (local_err) {
goto out;
}
}
/* increment the number of CPUs */
x86ms->boot_cpus++;
if (x86ms->rtc) {
rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
}
if (x86ms->fw_cfg) {
fw_cfg_modify_i16(x86ms->fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
}
found_cpu = pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, NULL);
found_cpu->cpu = OBJECT(dev);
out:
error_propagate(errp, local_err);
}
static void pc_cpu_unplug_request_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
int idx = -1;
Error *local_err = NULL;
X86CPU *cpu = X86_CPU(dev);
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
if (!pcms->acpi_dev) {
error_setg(&local_err, "CPU hot unplug not supported without ACPI");
goto out;
}
pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, &idx);
assert(idx != -1);
if (idx == 0) {
error_setg(&local_err, "Boot CPU is unpluggable");
goto out;
}
hotplug_handler_unplug_request(HOTPLUG_HANDLER(pcms->acpi_dev), dev,
&local_err);
if (local_err) {
goto out;
}
out:
error_propagate(errp, local_err);
}
static void pc_cpu_unplug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
CPUArchId *found_cpu;
Error *local_err = NULL;
X86CPU *cpu = X86_CPU(dev);
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
X86MachineState *x86ms = X86_MACHINE(pcms);
hotplug_handler_unplug(HOTPLUG_HANDLER(pcms->acpi_dev), dev, &local_err);
if (local_err) {
goto out;
}
found_cpu = pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, NULL);
found_cpu->cpu = NULL;
object_property_set_bool(OBJECT(dev), false, "realized", &error_abort);
/* decrement the number of CPUs */
x86ms->boot_cpus--;
/* Update the number of CPUs in CMOS */
rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
fw_cfg_modify_i16(x86ms->fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
out:
error_propagate(errp, local_err);
}
static void pc_cpu_pre_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
int idx;
CPUState *cs;
CPUArchId *cpu_slot;
X86CPUTopoIDs topo_ids;
X86CPU *cpu = X86_CPU(dev);
CPUX86State *env = &cpu->env;
MachineState *ms = MACHINE(hotplug_dev);
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
X86MachineState *x86ms = X86_MACHINE(pcms);
unsigned int smp_cores = ms->smp.cores;
unsigned int smp_threads = ms->smp.threads;
X86CPUTopoInfo topo_info;
if(!object_dynamic_cast(OBJECT(cpu), ms->cpu_type)) {
error_setg(errp, "Invalid CPU type, expected cpu type: '%s'",
ms->cpu_type);
return;
}
init_topo_info(&topo_info, x86ms);
env->nr_dies = x86ms->smp_dies;
env->nr_nodes = topo_info.nodes_per_pkg;
env->pkg_offset = x86ms->apicid_pkg_offset(&topo_info);
/*
* If APIC ID is not set,
* set it based on socket/die/core/thread properties.
*/
if (cpu->apic_id == UNASSIGNED_APIC_ID) {
int max_socket = (ms->smp.max_cpus - 1) /
smp_threads / smp_cores / x86ms->smp_dies;
/*
* die-id was optional in QEMU 4.0 and older, so keep it optional
* if there's only one die per socket.
*/
if (cpu->die_id < 0 && x86ms->smp_dies == 1) {
cpu->die_id = 0;
}
if (cpu->socket_id < 0) {
error_setg(errp, "CPU socket-id is not set");
return;
} else if (cpu->socket_id > max_socket) {
error_setg(errp, "Invalid CPU socket-id: %u must be in range 0:%u",
cpu->socket_id, max_socket);
return;
}
if (cpu->die_id < 0) {
error_setg(errp, "CPU die-id is not set");
return;
} else if (cpu->die_id > x86ms->smp_dies - 1) {
error_setg(errp, "Invalid CPU die-id: %u must be in range 0:%u",
cpu->die_id, x86ms->smp_dies - 1);
return;
}
if (cpu->core_id < 0) {
error_setg(errp, "CPU core-id is not set");
return;
} else if (cpu->core_id > (smp_cores - 1)) {
error_setg(errp, "Invalid CPU core-id: %u must be in range 0:%u",
cpu->core_id, smp_cores - 1);
return;
}
if (cpu->thread_id < 0) {
error_setg(errp, "CPU thread-id is not set");
return;
} else if (cpu->thread_id > (smp_threads - 1)) {
error_setg(errp, "Invalid CPU thread-id: %u must be in range 0:%u",
cpu->thread_id, smp_threads - 1);
return;
}
topo_ids.pkg_id = cpu->socket_id;
topo_ids.die_id = cpu->die_id;
topo_ids.core_id = cpu->core_id;
topo_ids.smt_id = cpu->thread_id;
cpu->apic_id = x86ms->apicid_from_topo_ids(&topo_info, &topo_ids);
}
cpu_slot = pc_find_cpu_slot(MACHINE(pcms), cpu->apic_id, &idx);
if (!cpu_slot) {
MachineState *ms = MACHINE(pcms);
x86ms->topo_ids_from_apicid(cpu->apic_id, &topo_info, &topo_ids);
error_setg(errp,
"Invalid CPU [socket: %u, die: %u, core: %u, thread: %u] with"
" APIC ID %" PRIu32 ", valid index range 0:%d",
topo_ids.pkg_id, topo_ids.die_id, topo_ids.core_id, topo_ids.smt_id,
cpu->apic_id, ms->possible_cpus->len - 1);
return;
}
if (cpu_slot->cpu) {
error_setg(errp, "CPU[%d] with APIC ID %" PRIu32 " exists",
idx, cpu->apic_id);
return;
}
/* if 'address' properties socket-id/core-id/thread-id are not set, set them
* so that machine_query_hotpluggable_cpus would show correct values
*/
/* TODO: move socket_id/core_id/thread_id checks into x86_cpu_realizefn()
* once -smp refactoring is complete and there will be CPU private
* CPUState::nr_cores and CPUState::nr_threads fields instead of globals */
x86ms->topo_ids_from_apicid(cpu->apic_id, &topo_info, &topo_ids);
if (cpu->socket_id != -1 && cpu->socket_id != topo_ids.pkg_id) {
error_setg(errp, "property socket-id: %u doesn't match set apic-id:"
" 0x%x (socket-id: %u)", cpu->socket_id, cpu->apic_id,
topo_ids.pkg_id);
return;
}
cpu->socket_id = topo_ids.pkg_id;
if (cpu->die_id != -1 && cpu->die_id != topo_ids.die_id) {
error_setg(errp, "property die-id: %u doesn't match set apic-id:"
" 0x%x (die-id: %u)", cpu->die_id, cpu->apic_id, topo_ids.die_id);
return;
}
cpu->die_id = topo_ids.die_id;
if (cpu->core_id != -1 && cpu->core_id != topo_ids.core_id) {
error_setg(errp, "property core-id: %u doesn't match set apic-id:"
" 0x%x (core-id: %u)", cpu->core_id, cpu->apic_id,
topo_ids.core_id);
return;
}
cpu->core_id = topo_ids.core_id;
if (cpu->thread_id != -1 && cpu->thread_id != topo_ids.smt_id) {
error_setg(errp, "property thread-id: %u doesn't match set apic-id:"
" 0x%x (thread-id: %u)", cpu->thread_id, cpu->apic_id,
topo_ids.smt_id);
return;
}
cpu->thread_id = topo_ids.smt_id;
if (hyperv_feat_enabled(cpu, HYPERV_FEAT_VPINDEX) &&
!kvm_hv_vpindex_settable()) {
error_setg(errp, "kernel doesn't allow setting HyperV VP_INDEX");
return;
}
cs = CPU(cpu);
cs->cpu_index = idx;
numa_cpu_pre_plug(cpu_slot, dev, errp);
}
static void pc_virtio_pmem_pci_pre_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
HotplugHandler *hotplug_dev2 = qdev_get_bus_hotplug_handler(dev);
Error *local_err = NULL;
if (!hotplug_dev2) {
/*
* Without a bus hotplug handler, we cannot control the plug/unplug
* order. This should never be the case on x86, however better add
* a safety net.
*/
error_setg(errp, "virtio-pmem-pci not supported on this bus.");
return;
}
/*
* First, see if we can plug this memory device at all. If that
* succeeds, branch of to the actual hotplug handler.
*/
memory_device_pre_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev), NULL,
&local_err);
if (!local_err) {
hotplug_handler_pre_plug(hotplug_dev2, dev, &local_err);
}
error_propagate(errp, local_err);
}
static void pc_virtio_pmem_pci_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
HotplugHandler *hotplug_dev2 = qdev_get_bus_hotplug_handler(dev);
Error *local_err = NULL;
/*
* Plug the memory device first and then branch off to the actual
* hotplug handler. If that one fails, we can easily undo the memory
* device bits.
*/
memory_device_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
hotplug_handler_plug(hotplug_dev2, dev, &local_err);
if (local_err) {
memory_device_unplug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
}
error_propagate(errp, local_err);
}
static void pc_virtio_pmem_pci_unplug_request(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
/* We don't support virtio pmem hot unplug */
error_setg(errp, "virtio pmem device unplug not supported.");
}
static void pc_virtio_pmem_pci_unplug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
/* We don't support virtio pmem hot unplug */
}
static void pc_machine_device_pre_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
pc_memory_pre_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
pc_cpu_pre_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
pc_virtio_pmem_pci_pre_plug(hotplug_dev, dev, errp);
}
}
static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
pc_memory_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
pc_cpu_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
pc_virtio_pmem_pci_plug(hotplug_dev, dev, errp);
}
}
static void pc_machine_device_unplug_request_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
pc_memory_unplug_request(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
pc_cpu_unplug_request_cb(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
pc_virtio_pmem_pci_unplug_request(hotplug_dev, dev, errp);
} else {
error_setg(errp, "acpi: device unplug request for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
pc_memory_unplug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
pc_cpu_unplug_cb(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
pc_virtio_pmem_pci_unplug(hotplug_dev, dev, errp);
} else {
error_setg(errp, "acpi: device unplug for not supported device"
" type: %s", object_get_typename(OBJECT(dev)));
}
}
static HotplugHandler *pc_get_hotplug_handler(MachineState *machine,
DeviceState *dev)
{
if (object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) ||
object_dynamic_cast(OBJECT(dev), TYPE_CPU) ||
object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_PMEM_PCI)) {
return HOTPLUG_HANDLER(machine);
}
return NULL;
}
static void
pc_machine_get_device_memory_region_size(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
MachineState *ms = MACHINE(obj);
int64_t value = 0;
if (ms->device_memory) {
value = memory_region_size(&ms->device_memory->mr);
}
visit_type_int(v, name, &value, errp);
}
static void pc_machine_get_vmport(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
OnOffAuto vmport = pcms->vmport;
visit_type_OnOffAuto(v, name, &vmport, errp);
}
static void pc_machine_set_vmport(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
visit_type_OnOffAuto(v, name, &pcms->vmport, errp);
}
static bool pc_machine_get_smbus(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
return pcms->smbus_enabled;
}
static void pc_machine_set_smbus(Object *obj, bool value, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
pcms->smbus_enabled = value;
}
static bool pc_machine_get_sata(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
return pcms->sata_enabled;
}
static void pc_machine_set_sata(Object *obj, bool value, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
pcms->sata_enabled = value;
}
static bool pc_machine_get_pit(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
return pcms->pit_enabled;
}
static void pc_machine_set_pit(Object *obj, bool value, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
pcms->pit_enabled = value;
}
static void pc_machine_initfn(Object *obj)
{
PCMachineState *pcms = PC_MACHINE(obj);
#ifdef CONFIG_VMPORT
pcms->vmport = ON_OFF_AUTO_AUTO;
#else
pcms->vmport = ON_OFF_AUTO_OFF;
#endif /* CONFIG_VMPORT */
/* acpi build is enabled by default if machine supports it */
pcms->acpi_build_enabled = PC_MACHINE_GET_CLASS(pcms)->has_acpi_build;
pcms->smbus_enabled = true;
pcms->sata_enabled = true;
pcms->pit_enabled = true;
pc_system_flash_create(pcms);
}
static void pc_machine_reset(MachineState *machine)
{
CPUState *cs;
X86CPU *cpu;
qemu_devices_reset();
/* Reset APIC after devices have been reset to cancel
* any changes that qemu_devices_reset() might have done.
*/
CPU_FOREACH(cs) {
cpu = X86_CPU(cs);
if (cpu->apic_state) {
device_legacy_reset(cpu->apic_state);
}
}
}
static void pc_machine_wakeup(MachineState *machine)
{
cpu_synchronize_all_states();
pc_machine_reset(machine);
cpu_synchronize_all_post_reset();
}
static bool pc_hotplug_allowed(MachineState *ms, DeviceState *dev, Error **errp)
{
X86IOMMUState *iommu = x86_iommu_get_default();
IntelIOMMUState *intel_iommu;
if (iommu &&
object_dynamic_cast((Object *)iommu, TYPE_INTEL_IOMMU_DEVICE) &&
object_dynamic_cast((Object *)dev, "vfio-pci")) {
intel_iommu = INTEL_IOMMU_DEVICE(iommu);
if (!intel_iommu->caching_mode) {
error_setg(errp, "Device assignment is not allowed without "
"enabling caching-mode=on for Intel IOMMU.");
return false;
}
}
return true;
}
static void pc_machine_class_init(ObjectClass *oc, void *data)
{
MachineClass *mc = MACHINE_CLASS(oc);
PCMachineClass *pcmc = PC_MACHINE_CLASS(oc);
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
pcmc->pci_enabled = true;
pcmc->has_acpi_build = true;
pcmc->rsdp_in_ram = true;
pcmc->smbios_defaults = true;
pcmc->smbios_uuid_encoded = true;
pcmc->gigabyte_align = true;
pcmc->has_reserved_memory = true;
pcmc->kvmclock_enabled = true;
pcmc->enforce_aligned_dimm = true;
/* BIOS ACPI tables: 128K. Other BIOS datastructures: less than 4K reported
* to be used at the moment, 32K should be enough for a while. */
pcmc->acpi_data_size = 0x20000 + 0x8000;
pcmc->linuxboot_dma_enabled = true;
pcmc->pvh_enabled = true;
assert(!mc->get_hotplug_handler);
mc->get_hotplug_handler = pc_get_hotplug_handler;
mc->hotplug_allowed = pc_hotplug_allowed;
mc->cpu_index_to_instance_props = x86_cpu_index_to_props;
mc->get_default_cpu_node_id = x86_get_default_cpu_node_id;
mc->possible_cpu_arch_ids = x86_possible_cpu_arch_ids;
mc->auto_enable_numa_with_memhp = true;
mc->has_hotpluggable_cpus = true;
mc->default_boot_order = "cad";
mc->hot_add_cpu = pc_hot_add_cpu;
mc->smp_parse = pc_smp_parse;
mc->block_default_type = IF_IDE;
mc->max_cpus = 255;
mc->reset = pc_machine_reset;
mc->wakeup = pc_machine_wakeup;
hc->pre_plug = pc_machine_device_pre_plug_cb;
hc->plug = pc_machine_device_plug_cb;
hc->unplug_request = pc_machine_device_unplug_request_cb;
hc->unplug = pc_machine_device_unplug_cb;
mc->default_cpu_type = TARGET_DEFAULT_CPU_TYPE;
mc->nvdimm_supported = true;
mc->numa_mem_supported = true;
mc->default_ram_id = "pc.ram";
object_class_property_add(oc, PC_MACHINE_DEVMEM_REGION_SIZE, "int",
pc_machine_get_device_memory_region_size, NULL,
NULL, NULL);
object_class_property_add(oc, PC_MACHINE_VMPORT, "OnOffAuto",
pc_machine_get_vmport, pc_machine_set_vmport,
NULL, NULL);
object_class_property_set_description(oc, PC_MACHINE_VMPORT,
"Enable vmport (pc & q35)");
object_class_property_add_bool(oc, PC_MACHINE_SMBUS,
pc_machine_get_smbus, pc_machine_set_smbus);
object_class_property_add_bool(oc, PC_MACHINE_SATA,
pc_machine_get_sata, pc_machine_set_sata);
object_class_property_add_bool(oc, PC_MACHINE_PIT,
pc_machine_get_pit, pc_machine_set_pit);
}
static const TypeInfo pc_machine_info = {
.name = TYPE_PC_MACHINE,
.parent = TYPE_X86_MACHINE,
.abstract = true,
.instance_size = sizeof(PCMachineState),
.instance_init = pc_machine_initfn,
.class_size = sizeof(PCMachineClass),
.class_init = pc_machine_class_init,
.interfaces = (InterfaceInfo[]) {
{ TYPE_HOTPLUG_HANDLER },
{ }
},
};
static void pc_machine_register_types(void)
{
type_register_static(&pc_machine_info);
}
type_init(pc_machine_register_types)
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