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qemu/hw/i386/pc.c
David Hildenbrand af1d039f6d pc: Support coldplugging of virtio-pmem-pci devices on all buses 
E.g., with "pc-q35-4.2", trying to coldplug a virtio-pmem-pci devices
results in
    "virtio-pmem-pci not supported on this bus"

Reasons is, that the bus does not support hotplug and, therefore, does
not have a hotplug handler. Let's allow coldplugging virtio-pmem devices
on such buses. The hotplug order is only relevant for virtio-pmem-pci
when the guest is already alive and the device is visible before
memory_device_plug() wired up the memory device bits.

Hotplug attempts will still fail with:
    "Error: Bus 'pcie.0' does not support hotplugging"

Hotunplug attempts will still fail with:
    "Error: Bus 'pcie.0' does not support hotplugging"

Reported-by: Vivek Goyal <vgoyal@redhat.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Cc: Igor Mammedov <imammedo@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
Message-Id: <20200626072248.78761-2-david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2020-07-02 05:54:59 -04:00

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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 "hw/i386/vmport.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/xen.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 "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
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 *fdc, *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) {
fdc = isa_new(TYPE_ISA_FDC);
if (fdc) {
isa_realize_and_unref(fdc, isa_bus, &error_fatal);
isa_fdc_init_drives(fdc, fd);
}
}
i8042 = isa_create_simple(isa_bus, "i8042");
if (!no_vmport) {
isa_create_simple(isa_bus, TYPE_VMPORT);
vmmouse = isa_try_new("vmmouse");
} else {
vmmouse = NULL;
}
if (vmmouse) {
object_property_set_link(OBJECT(vmmouse), OBJECT(i8042),
"i8042", &error_abort);
isa_realize_and_unref(vmmouse, isa_bus, &error_fatal);
}
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_new(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);
}
sysbus_realize_and_unref(SYS_BUS_DEVICE(hpet), &error_fatal);
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));
qdev_unrealize(dev);
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;
qdev_unrealize(dev);
/* 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 && dev->hotplugged) {
/*
* Without a bus hotplug handler, we cannot control the plug/unplug
* order. We should never reach this point when hotplugging on x86,
* however, better add a safety net.
*/
error_setg(errp, "virtio-pmem-pci hotplug 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_dev2) {
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));
if (hotplug_dev2) {
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_get_max_ram_below_4g(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
uint64_t value = pcms->max_ram_below_4g;
visit_type_size(v, name, &value, errp);
}
static void pc_machine_set_max_ram_below_4g(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
Error *error = NULL;
uint64_t value;
visit_type_size(v, name, &value, &error);
if (error) {
error_propagate(errp, error);
return;
}
if (value > 4 * GiB) {
error_setg(&error,
"Machine option 'max-ram-below-4g=%"PRIu64
"' expects size less than or equal to 4G", value);
error_propagate(errp, error);
return;
}
if (value < 1 * MiB) {
warn_report("Only %" PRIu64 " bytes of RAM below the 4GiB boundary,"
"BIOS may not work with less than 1MiB", value);
}
pcms->max_ram_below_4g = 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 */
pcms->max_ram_below_4g = 0; /* use default */
/* 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->default_ram_id = "pc.ram";
object_class_property_add(oc, PC_MACHINE_MAX_RAM_BELOW_4G, "size",
pc_machine_get_max_ram_below_4g, pc_machine_set_max_ram_below_4g,
NULL, NULL);
object_class_property_set_description(oc, PC_MACHINE_MAX_RAM_BELOW_4G,
"Maximum ram below the 4G boundary (32bit boundary)");
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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