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qemu / qemu / 619d144751e6685b24ded9029fe9c484c0494c30 / . / hw / i386 / pc.c
blob: 830614d93033b9f2dc74ec34179e5acb71af91c3 [file] [log] [blame]
/*
* 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/pc.h"
#include "hw/char/serial-isa.h"
#include "hw/char/parallel.h"
#include "hw/hyperv/hv-balloon.h"
#include "hw/i386/fw_cfg.h"
#include "hw/i386/vmport.h"
#include "sysemu/cpus.h"
#include "hw/ide/ide-bus.h"
#include "hw/timer/hpet.h"
#include "hw/loader.h"
#include "hw/rtc/mc146818rtc.h"
#include "hw/intc/i8259.h"
#include "hw/timer/i8254.h"
#include "hw/input/i8042.h"
#include "hw/audio/pcspk.h"
#include "sysemu/sysemu.h"
#include "sysemu/xen.h"
#include "sysemu/reset.h"
#include "kvm/kvm_i386.h"
#include "hw/xen/xen.h"
#include "qapi/qmp/qlist.h"
#include "qemu/error-report.h"
#include "hw/acpi/cpu_hotplug.h"
#include "acpi-build.h"
#include "hw/mem/nvdimm.h"
#include "hw/cxl/cxl_host.h"
#include "hw/usb.h"
#include "hw/i386/intel_iommu.h"
#include "hw/net/ne2000-isa.h"
#include "hw/virtio/virtio-iommu.h"
#include "hw/virtio/virtio-md-pci.h"
#include "hw/i386/kvm/xen_overlay.h"
#include "hw/i386/kvm/xen_evtchn.h"
#include "hw/i386/kvm/xen_gnttab.h"
#include "hw/i386/kvm/xen_xenstore.h"
#include "hw/mem/memory-device.h"
#include "e820_memory_layout.h"
#include "trace.h"
#include "sev.h"
#include CONFIG_DEVICES
#ifdef CONFIG_XEN_EMU
#include "hw/xen/xen-legacy-backend.h"
#include "hw/xen/xen-bus.h"
#endif
/*
* Helper for setting model-id for CPU models that changed model-id
* depending on QEMU versions up to QEMU 2.4.
*/
#define PC_CPU_MODEL_IDS(v) \
{ "qemu32-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },\
{ "qemu64-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },\
{ "athlon-" TYPE_X86_CPU, "model-id", "QEMU Virtual CPU version " v, },
GlobalProperty pc_compat_9_1[] = {
{ "ICH9-LPC", "x-smi-swsmi-timer", "off" },
{ "ICH9-LPC", "x-smi-periodic-timer", "off" },
{ TYPE_INTEL_IOMMU_DEVICE, "stale-tm", "on" },
};
const size_t pc_compat_9_1_len = G_N_ELEMENTS(pc_compat_9_1);
GlobalProperty pc_compat_9_0[] = {
{ TYPE_X86_CPU, "x-amd-topoext-features-only", "false" },
{ TYPE_X86_CPU, "x-l1-cache-per-thread", "false" },
{ TYPE_X86_CPU, "guest-phys-bits", "0" },
{ "sev-guest", "legacy-vm-type", "on" },
{ TYPE_X86_CPU, "legacy-multi-node", "on" },
};
const size_t pc_compat_9_0_len = G_N_ELEMENTS(pc_compat_9_0);
GlobalProperty pc_compat_8_2[] = {};
const size_t pc_compat_8_2_len = G_N_ELEMENTS(pc_compat_8_2);
GlobalProperty pc_compat_8_1[] = {};
const size_t pc_compat_8_1_len = G_N_ELEMENTS(pc_compat_8_1);
GlobalProperty pc_compat_8_0[] = {
{ "virtio-mem", "unplugged-inaccessible", "auto" },
};
const size_t pc_compat_8_0_len = G_N_ELEMENTS(pc_compat_8_0);
GlobalProperty pc_compat_7_2[] = {
{ "ICH9-LPC", "noreboot", "true" },
};
const size_t pc_compat_7_2_len = G_N_ELEMENTS(pc_compat_7_2);
GlobalProperty pc_compat_7_1[] = {};
const size_t pc_compat_7_1_len = G_N_ELEMENTS(pc_compat_7_1);
GlobalProperty pc_compat_7_0[] = {};
const size_t pc_compat_7_0_len = G_N_ELEMENTS(pc_compat_7_0);
GlobalProperty pc_compat_6_2[] = {
{ "virtio-mem", "unplugged-inaccessible", "off" },
};
const size_t pc_compat_6_2_len = G_N_ELEMENTS(pc_compat_6_2);
GlobalProperty pc_compat_6_1[] = {
{ TYPE_X86_CPU, "hv-version-id-build", "0x1bbc" },
{ TYPE_X86_CPU, "hv-version-id-major", "0x0006" },
{ TYPE_X86_CPU, "hv-version-id-minor", "0x0001" },
{ "ICH9-LPC", "x-keep-pci-slot-hpc", "false" },
};
const size_t pc_compat_6_1_len = G_N_ELEMENTS(pc_compat_6_1);
GlobalProperty pc_compat_6_0[] = {
{ "qemu64" "-" TYPE_X86_CPU, "family", "6" },
{ "qemu64" "-" TYPE_X86_CPU, "model", "6" },
{ "qemu64" "-" TYPE_X86_CPU, "stepping", "3" },
{ TYPE_X86_CPU, "x-vendor-cpuid-only", "off" },
{ "ICH9-LPC", ACPI_PM_PROP_ACPI_PCIHP_BRIDGE, "off" },
{ "ICH9-LPC", "x-keep-pci-slot-hpc", "true" },
};
const size_t pc_compat_6_0_len = G_N_ELEMENTS(pc_compat_6_0);
GlobalProperty pc_compat_5_2[] = {
{ "ICH9-LPC", "x-smi-cpu-hotunplug", "off" },
};
const size_t pc_compat_5_2_len = G_N_ELEMENTS(pc_compat_5_2);
GlobalProperty pc_compat_5_1[] = {
{ "ICH9-LPC", "x-smi-cpu-hotplug", "off" },
{ TYPE_X86_CPU, "kvm-msi-ext-dest-id", "off" },
};
const size_t pc_compat_5_1_len = G_N_ELEMENTS(pc_compat_5_1);
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);
/*
* @PC_FW_DATA:
* Size of the chunk of memory at the top of RAM for the BIOS ACPI tables
* and other BIOS datastructures.
*
* BIOS ACPI tables: 128K. Other BIOS datastructures: less than 4K
* reported to be used at the moment, 32K should be enough for a while.
*/
#define PC_FW_DATA (0x20000 + 0x8000)
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, IOAPIC_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;
}
/* MS-DOS 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(MC146818RtcState *s, int type_ofs, int info_ofs,
int16_t cylinders, int8_t heads, int8_t sectors)
{
mc146818rtc_set_cmos_data(s, type_ofs, 47);
mc146818rtc_set_cmos_data(s, info_ofs, cylinders);
mc146818rtc_set_cmos_data(s, info_ofs + 1, cylinders >> 8);
mc146818rtc_set_cmos_data(s, info_ofs + 2, heads);
mc146818rtc_set_cmos_data(s, info_ofs + 3, 0xff);
mc146818rtc_set_cmos_data(s, info_ofs + 4, 0xff);
mc146818rtc_set_cmos_data(s, info_ofs + 5, 0xc0 | ((heads > 8) << 3));
mc146818rtc_set_cmos_data(s, info_ofs + 6, cylinders);
mc146818rtc_set_cmos_data(s, info_ofs + 7, cylinders >> 8);
mc146818rtc_set_cmos_data(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(PCMachineState *pcms, MC146818RtcState *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;
}
}
mc146818rtc_set_cmos_data(s, 0x3d, (bds[1] << 4) | bds[0]);
mc146818rtc_set_cmos_data(s, 0x38, (bds[2] << 4) | !pcms->fd_bootchk);
}
static void pc_boot_set(void *opaque, const char *boot_device, Error **errp)
{
PCMachineState *pcms = opaque;
X86MachineState *x86ms = X86_MACHINE(pcms);
set_boot_dev(pcms, MC146818_RTC(x86ms->rtc), boot_device, errp);
}
static void pc_cmos_init_floppy(MC146818RtcState *rtc_state, ISADevice *floppy)
{
int val, nb;
FloppyDriveType fd_type[2] = { FLOPPY_DRIVE_TYPE_NONE,
FLOPPY_DRIVE_TYPE_NONE };
#ifdef CONFIG_FDC_ISA
/* floppy type */
if (floppy) {
for (int i = 0; i < 2; i++) {
fd_type[i] = isa_fdc_get_drive_type(floppy, i);
}
}
#endif
val = (cmos_get_fd_drive_type(fd_type[0]) << 4) |
cmos_get_fd_drive_type(fd_type[1]);
mc146818rtc_set_cmos_data(rtc_state, 0x10, val);
val = mc146818rtc_get_cmos_data(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;
}
mc146818rtc_set_cmos_data(rtc_state, REG_EQUIPMENT_BYTE, val);
}
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.
*/
static 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(PCMachineState *pcms)
{
X86MachineState *x86ms = X86_MACHINE(pcms);
MC146818RtcState *s = MC146818_RTC(x86ms->rtc);
int16_t cylinders;
int8_t heads, sectors;
int val;
int i, trans;
val = 0;
if (pcms->idebus[0] &&
ide_get_geometry(pcms->idebus[0], 0,
&cylinders, &heads, &sectors) >= 0) {
cmos_init_hd(s, 0x19, 0x1b, cylinders, heads, sectors);
val |= 0xf0;
}
if (pcms->idebus[0] &&
ide_get_geometry(pcms->idebus[0], 1,
&cylinders, &heads, &sectors) >= 0) {
cmos_init_hd(s, 0x1a, 0x24, cylinders, heads, sectors);
val |= 0x0f;
}
mc146818rtc_set_cmos_data(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. */
BusState *idebus = pcms->idebus[i / 2];
if (idebus &&
ide_get_geometry(idebus, i % 2,
&cylinders, &heads, &sectors) >= 0) {
trans = ide_get_bios_chs_trans(idebus, i % 2) - 1;
assert((trans & ~3) == 0);
val |= trans << (i * 2);
}
}
mc146818rtc_set_cmos_data(s, 0x39, val);
pc_cmos_init_floppy(s, pc_find_fdc0());
/* various important CMOS locations needed by PC/Bochs bios */
/* memory size */
/* base memory (first MiB) */
val = MIN(x86ms->below_4g_mem_size / KiB, 640);
mc146818rtc_set_cmos_data(s, 0x15, val);
mc146818rtc_set_cmos_data(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;
mc146818rtc_set_cmos_data(s, 0x17, val);
mc146818rtc_set_cmos_data(s, 0x18, val >> 8);
mc146818rtc_set_cmos_data(s, 0x30, val);
mc146818rtc_set_cmos_data(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;
mc146818rtc_set_cmos_data(s, 0x34, val);
mc146818rtc_set_cmos_data(s, 0x35, val >> 8);
/* memory above 4GiB */
val = x86ms->above_4g_mem_size / 65536;
mc146818rtc_set_cmos_data(s, 0x5b, val);
mc146818rtc_set_cmos_data(s, 0x5c, val >> 8);
mc146818rtc_set_cmos_data(s, 0x5d, val >> 16);
val = 0;
val |= 0x02; /* FPU is there */
val |= 0x04; /* PS/2 mouse installed */
mc146818rtc_set_cmos_data(s, REG_EQUIPMENT_BYTE, val);
}
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 };
static gboolean pc_init_ne2k_isa(ISABus *bus, NICInfo *nd, Error **errp)
{
static int nb_ne2k = 0;
if (nb_ne2k == NE2000_NB_MAX) {
error_setg(errp,
"maximum number of ISA NE2000 devices exceeded");
return false;
}
isa_ne2000_init(bus, ne2000_io[nb_ne2k],
ne2000_irq[nb_ne2k], nd);
nb_ne2k++;
return true;
}
void pc_acpi_smi_interrupt(void *opaque, int irq, int level)
{
X86CPU *cpu = opaque;
if (level) {
cpu_interrupt(CPU(cpu), CPU_INTERRUPT_SMI);
}
}
static
void pc_machine_done(Notifier *notifier, void *data)
{
PCMachineState *pcms = container_of(notifier,
PCMachineState, machine_done);
X86MachineState *x86ms = X86_MACHINE(pcms);
cxl_hook_up_pxb_registers(pcms->pcibus, &pcms->cxl_devices_state,
&error_fatal);
if (pcms->cxl_devices_state.is_enabled) {
cxl_fmws_link_targets(&pcms->cxl_devices_state, &error_fatal);
}
/* set the number of CPUs */
x86_rtc_set_cpus_count(x86ms->rtc, x86ms->boot_cpus);
fw_cfg_add_extra_pci_roots(pcms->pcibus, x86ms->fw_cfg);
acpi_setup();
if (x86ms->fw_cfg) {
fw_cfg_build_smbios(pcms, x86ms->fw_cfg, pcms->smbios_entry_point_type);
fw_cfg_add_e820(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);
}
pc_cmos_init_late(pcms);
}
/* setup pci memory address space mapping into system address space */
void pc_pci_as_mapping_init(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_dma(FW_CFG_IO_BASE, FW_CFG_IO_BASE + 4,
&address_space_memory);
fw_cfg_add_i16(fw_cfg, FW_CFG_NB_CPUS, x86ms->boot_cpus);
rom_set_fw(fw_cfg);
x86_load_linux(x86ms, fw_cfg, PC_FW_DATA, pcmc->pvh_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") ||
!strcmp(option_rom[i].name, "multiboot_dma.bin"));
rom_add_option(option_rom[i].name, option_rom[i].bootindex);
}
x86ms->fw_cfg = fw_cfg;
}
#define PC_ROM_MIN_VGA 0xc0000
#define PC_ROM_MIN_OPTION 0xc8000
#define PC_ROM_MAX 0xe0000
#define PC_ROM_ALIGN 0x800
#define PC_ROM_SIZE (PC_ROM_MAX - PC_ROM_MIN_VGA)
static hwaddr pc_above_4g_end(PCMachineState *pcms)
{
X86MachineState *x86ms = X86_MACHINE(pcms);
if (pcms->sgx_epc.size != 0) {
return sgx_epc_above_4g_end(&pcms->sgx_epc);
}
return x86ms->above_4g_mem_start + x86ms->above_4g_mem_size;
}
static void pc_get_device_memory_range(PCMachineState *pcms,
hwaddr *base,
ram_addr_t *device_mem_size)
{
MachineState *machine = MACHINE(pcms);
ram_addr_t size;
hwaddr addr;
size = machine->maxram_size - machine->ram_size;
addr = ROUND_UP(pc_above_4g_end(pcms), 1 * GiB);
/* size device region assuming 1G page max alignment per slot */
size += (1 * GiB) * machine->ram_slots;
*base = addr;
*device_mem_size = size;
}
static uint64_t pc_get_cxl_range_start(PCMachineState *pcms)
{
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
MachineState *ms = MACHINE(pcms);
hwaddr cxl_base;
ram_addr_t size;
if (pcmc->has_reserved_memory &&
(ms->ram_size < ms->maxram_size)) {
pc_get_device_memory_range(pcms, &cxl_base, &size);
cxl_base += size;
} else {
cxl_base = pc_above_4g_end(pcms);
}
return cxl_base;
}
static uint64_t pc_get_cxl_range_end(PCMachineState *pcms)
{
uint64_t start = pc_get_cxl_range_start(pcms) + MiB;
if (pcms->cxl_devices_state.fixed_windows) {
GList *it;
start = ROUND_UP(start, 256 * MiB);
for (it = pcms->cxl_devices_state.fixed_windows; it; it = it->next) {
CXLFixedWindow *fw = it->data;
start += fw->size;
}
}
return start;
}
static hwaddr pc_max_used_gpa(PCMachineState *pcms, uint64_t pci_hole64_size)
{
X86CPU *cpu = X86_CPU(first_cpu);
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
MachineState *ms = MACHINE(pcms);
if (cpu->env.features[FEAT_8000_0001_EDX] & CPUID_EXT2_LM) {
/* 64-bit systems */
return pc_pci_hole64_start() + pci_hole64_size - 1;
}
/* 32-bit systems */
if (pcmc->broken_32bit_mem_addr_check) {
/* old value for compatibility reasons */
return ((hwaddr)1 << cpu->phys_bits) - 1;
}
/*
* 32-bit systems don't have hole64 but they might have a region for
* memory devices. Even if additional hotplugged memory devices might
* not be usable by most guest OSes, we need to still consider them for
* calculating the highest possible GPA so that we can properly report
* if someone configures them on a CPU that cannot possibly address them.
*/
if (pcmc->has_reserved_memory &&
(ms->ram_size < ms->maxram_size)) {
hwaddr devmem_start;
ram_addr_t devmem_size;
pc_get_device_memory_range(pcms, &devmem_start, &devmem_size);
devmem_start += devmem_size;
return devmem_start - 1;
}
/* configuration without any memory hotplug */
return pc_above_4g_end(pcms) - 1;
}
/*
* AMD systems with an IOMMU have an additional hole close to the
* 1Tb, which are special GPAs that cannot be DMA mapped. Depending
* on kernel version, VFIO may or may not let you DMA map those ranges.
* Starting Linux v5.4 we validate it, and can't create guests on AMD machines
* with certain memory sizes. It's also wrong to use those IOVA ranges
* in detriment of leading to IOMMU INVALID_DEVICE_REQUEST or worse.
* The ranges reserved for Hyper-Transport are:
*
* FD_0000_0000h - FF_FFFF_FFFFh
*
* The ranges represent the following:
*
* Base Address Top Address Use
*
* FD_0000_0000h FD_F7FF_FFFFh Reserved interrupt address space
* FD_F800_0000h FD_F8FF_FFFFh Interrupt/EOI IntCtl
* FD_F900_0000h FD_F90F_FFFFh Legacy PIC IACK
* FD_F910_0000h FD_F91F_FFFFh System Management
* FD_F920_0000h FD_FAFF_FFFFh Reserved Page Tables
* FD_FB00_0000h FD_FBFF_FFFFh Address Translation
* FD_FC00_0000h FD_FDFF_FFFFh I/O Space
* FD_FE00_0000h FD_FFFF_FFFFh Configuration
* FE_0000_0000h FE_1FFF_FFFFh Extended Configuration/Device Messages
* FE_2000_0000h FF_FFFF_FFFFh Reserved
*
* See AMD IOMMU spec, section 2.1.2 "IOMMU Logical Topology",
* Table 3: Special Address Controls (GPA) for more information.
*/
#define AMD_HT_START 0xfd00000000UL
#define AMD_HT_END 0xffffffffffUL
#define AMD_ABOVE_1TB_START (AMD_HT_END + 1)
#define AMD_HT_SIZE (AMD_ABOVE_1TB_START - AMD_HT_START)
void pc_memory_init(PCMachineState *pcms,
MemoryRegion *system_memory,
MemoryRegion *rom_memory,
uint64_t pci_hole64_size)
{
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);
hwaddr maxphysaddr, maxusedaddr;
hwaddr cxl_base, cxl_resv_end = 0;
X86CPU *cpu = X86_CPU(first_cpu);
assert(machine->ram_size == x86ms->below_4g_mem_size +
x86ms->above_4g_mem_size);
linux_boot = (machine->kernel_filename != NULL);
/*
* The HyperTransport range close to the 1T boundary is unique to AMD
* hosts with IOMMUs enabled. Restrict the ram-above-4g relocation
* to above 1T to AMD vCPUs only. @enforce_amd_1tb_hole is only false in
* older machine types (<= 7.0) for compatibility purposes.
*/
if (IS_AMD_CPU(&cpu->env) && pcmc->enforce_amd_1tb_hole) {
/* Bail out if max possible address does not cross HT range */
if (pc_max_used_gpa(pcms, pci_hole64_size) >= AMD_HT_START) {
x86ms->above_4g_mem_start = AMD_ABOVE_1TB_START;
}
/*
* Advertise the HT region if address space covers the reserved
* region or if we relocate.
*/
if (cpu->phys_bits >= 40) {
e820_add_entry(AMD_HT_START, AMD_HT_SIZE, E820_RESERVED);
}
}
/*
* phys-bits is required to be appropriately configured
* to make sure max used GPA is reachable.
*/
maxusedaddr = pc_max_used_gpa(pcms, pci_hole64_size);
maxphysaddr = ((hwaddr)1 << cpu->phys_bits) - 1;
if (maxphysaddr < maxusedaddr) {
error_report("Address space limit 0x%"PRIx64" < 0x%"PRIx64
" phys-bits too low (%u)",
maxphysaddr, maxusedaddr, cpu->phys_bits);
exit(EXIT_FAILURE);
}
/*
* Split single memory region and use aliases to address portions of it,
* done for backwards compatibility with older qemus.
*/
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, x86ms->above_4g_mem_start,
ram_above_4g);
e820_add_entry(x86ms->above_4g_mem_start, x86ms->above_4g_mem_size,
E820_RAM);
}
if (pcms->sgx_epc.size != 0) {
e820_add_entry(pcms->sgx_epc.base, pcms->sgx_epc.size, E820_RESERVED);
}
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);
}
/* initialize device memory address space */
if (pcmc->has_reserved_memory &&
(machine->ram_size < machine->maxram_size)) {
ram_addr_t device_mem_size;
hwaddr device_mem_base;
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);
}
pc_get_device_memory_range(pcms, &device_mem_base, &device_mem_size);
if (device_mem_base + device_mem_size < device_mem_size) {
error_report("unsupported amount of maximum memory: " RAM_ADDR_FMT,
machine->maxram_size);
exit(EXIT_FAILURE);
}
machine_memory_devices_init(machine, device_mem_base, device_mem_size);
}
if (pcms->cxl_devices_state.is_enabled) {
MemoryRegion *mr = &pcms->cxl_devices_state.host_mr;
hwaddr cxl_size = MiB;
cxl_base = pc_get_cxl_range_start(pcms);
memory_region_init(mr, OBJECT(machine), "cxl_host_reg", cxl_size);
memory_region_add_subregion(system_memory, cxl_base, mr);
cxl_resv_end = cxl_base + cxl_size;
if (pcms->cxl_devices_state.fixed_windows) {
hwaddr cxl_fmw_base;
GList *it;
cxl_fmw_base = ROUND_UP(cxl_base + cxl_size, 256 * MiB);
for (it = pcms->cxl_devices_state.fixed_windows; it; it = it->next) {
CXLFixedWindow *fw = it->data;
fw->base = cxl_fmw_base;
memory_region_init_io(&fw->mr, OBJECT(machine), &cfmws_ops, fw,
"cxl-fixed-memory-region", fw->size);
memory_region_add_subregion(system_memory, fw->base, &fw->mr);
cxl_fmw_base += fw->size;
cxl_resv_end = cxl_fmw_base;
}
}
}
/* Initialize PC system firmware */
pc_system_firmware_init(pcms, rom_memory);
option_rom_mr = g_malloc(sizeof(*option_rom_mr));
if (machine_require_guest_memfd(machine)) {
memory_region_init_ram_guest_memfd(option_rom_mr, NULL, "pc.rom",
PC_ROM_SIZE, &error_fatal);
} else {
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 (machine->device_memory) {
uint64_t *val = g_malloc(sizeof(*val));
uint64_t res_mem_end = machine->device_memory->base;
if (!pcmc->broken_reserved_end) {
res_mem_end += memory_region_size(&machine->device_memory->mr);
}
if (pcms->cxl_devices_state.is_enabled) {
res_mem_end = cxl_resv_end;
}
*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, PC_FW_DATA, pcmc->pvh_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);
uint64_t hole64_start = 0;
ram_addr_t size = 0;
if (pcms->cxl_devices_state.is_enabled) {
hole64_start = pc_get_cxl_range_end(pcms);
} else if (pcmc->has_reserved_memory && (ms->ram_size < ms->maxram_size)) {
pc_get_device_memory_range(pcms, &hole64_start, &size);
if (!pcmc->broken_reserved_end) {
hole64_start += size;
}
} else {
hole64_start = pc_above_4g_end(pcms);
}
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 create_i8042, bool no_vmport, Error **errp)
{
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) {
#ifdef CONFIG_FDC_ISA
ISADevice *fdc = isa_new(TYPE_ISA_FDC);
if (fdc) {
isa_realize_and_unref(fdc, isa_bus, &error_fatal);
isa_fdc_init_drives(fdc, fd);
}
#endif
}
if (!create_i8042) {
if (!no_vmport) {
error_setg(errp,
"vmport requires the i8042 controller to be enabled");
}
return;
}
i8042 = isa_create_simple(isa_bus, TYPE_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), TYPE_I8042, OBJECT(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);
qdev_connect_gpio_out_named(DEVICE(i8042),
I8042_A20_LINE, 0, 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(struct PCMachineState *pcms,
ISABus *isa_bus, qemu_irq *gsi,
ISADevice *rtc_state,
bool create_fdctrl,
uint32_t hpet_irqs)
{
int i;
DeviceState *hpet = NULL;
int pit_isa_irq = 0;
qemu_irq pit_alt_irq = NULL;
ISADevice *pit = NULL;
MemoryRegion *ioport80_io = g_new(MemoryRegion, 1);
MemoryRegion *ioportF0_io = g_new(MemoryRegion, 1);
X86MachineState *x86ms = X86_MACHINE(pcms);
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.
*/
if (pcms->hpet_enabled) {
qemu_irq rtc_irq;
hpet = qdev_try_new(TYPE_HPET);
if (!hpet) {
error_report("couldn't create HPET device");
exit(1);
}
/*
* For pc-piix-*, hpet's intcap is always IRQ2. For pc-q35-*,
* use IRQ16~23, IRQ8 and IRQ2. If the user has already set
* the property, use whatever mask they specified.
*/
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 < IOAPIC_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);
/* overwrite connection created by south bridge */
qdev_connect_gpio_out(DEVICE(rtc_state), 0, rtc_irq);
}
object_property_add_alias(OBJECT(pcms), "rtc-time", OBJECT(rtc_state),
"date");
#ifdef CONFIG_XEN_EMU
if (xen_mode == XEN_EMULATE) {
xen_overlay_create();
xen_evtchn_create(IOAPIC_NUM_PINS, gsi);
xen_gnttab_create();
xen_xenstore_create();
if (pcms->pcibus) {
pci_create_simple(pcms->pcibus, -1, "xen-platform");
}
xen_bus_init();
}
#endif
qemu_register_boot_set(pc_boot_set, pcms);
set_boot_dev(pcms, MC146818_RTC(rtc_state),
MACHINE(pcms)->boot_config.order, &error_fatal);
if (!xen_enabled() &&
(x86ms->pit == ON_OFF_AUTO_AUTO || x86ms->pit == ON_OFF_AUTO_ON)) {
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));
}
object_property_set_link(OBJECT(pcms->pcspk), "pit",
OBJECT(pit), &error_fatal);
isa_realize_and_unref(pcms->pcspk, isa_bus, &error_fatal);
}
assert(pcms->vmport >= 0 && pcms->vmport < ON_OFF_AUTO__MAX);
if (pcms->vmport == ON_OFF_AUTO_AUTO) {
pcms->vmport = (xen_enabled() || !pcms->i8042_enabled)
? ON_OFF_AUTO_OFF : ON_OFF_AUTO_ON;
}
/* Super I/O */
pc_superio_init(isa_bus, create_fdctrl, pcms->i8042_enabled,
pcms->vmport != ON_OFF_AUTO_ON, &error_fatal);
}
void pc_nic_init(PCMachineClass *pcmc, ISABus *isa_bus, PCIBus *pci_bus)
{
MachineClass *mc = MACHINE_CLASS(pcmc);
bool default_is_ne2k = g_str_equal(mc->default_nic, TYPE_ISA_NE2000);
NICInfo *nd;
rom_set_order_override(FW_CFG_ORDER_OVERRIDE_NIC);
while ((nd = qemu_find_nic_info(TYPE_ISA_NE2000, default_is_ne2k, NULL))) {
pc_init_ne2k_isa(isa_bus, nd, &error_fatal);
}
/* Anything remaining should be a PCI NIC */
pci_init_nic_devices(pci_bus, mc->default_nic);
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 X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
const MachineState *ms = MACHINE(hotplug_dev);
const bool is_nvdimm = object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM);
Error *local_err = NULL;
/*
* When "acpi=off" is used with the Q35 machine type, no ACPI is built,
* but pcms->acpi_dev is still created. Check !acpi_enabled in
* addition to cover this case.
*/
if (!x86ms->acpi_dev || !x86_machine_is_acpi_enabled(x86ms)) {
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(x86ms->acpi_dev, dev, &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
pc_dimm_pre_plug(PC_DIMM(dev), MACHINE(hotplug_dev), errp);
}
static void pc_memory_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
X86MachineState *x86ms = X86_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));
if (is_nvdimm) {
nvdimm_plug(ms->nvdimms_state);
}
hotplug_handler_plug(x86ms->acpi_dev, dev, &error_abort);
}
static void pc_memory_unplug_request(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
/*
* When "acpi=off" is used with the Q35 machine type, no ACPI is built,
* but pcms->acpi_dev is still created. Check !acpi_enabled in
* addition to cover this case.
*/
if (!x86ms->acpi_dev || !x86_machine_is_acpi_enabled(x86ms)) {
error_setg(errp,
"memory hotplug is not enabled: missing acpi device or acpi disabled");
return;
}
if (object_dynamic_cast(OBJECT(dev), TYPE_NVDIMM)) {
error_setg(errp, "nvdimm device hot unplug is not supported yet.");
return;
}
hotplug_handler_unplug_request(x86ms->acpi_dev, dev,
errp);
}
static void pc_memory_unplug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
X86MachineState *x86ms = X86_MACHINE(hotplug_dev);
Error *local_err = NULL;
hotplug_handler_unplug(x86ms->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 void pc_hv_balloon_pre_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
/* The vmbus handler has no hotplug handler; we should never end up here. */
g_assert(!dev->hotplugged);
memory_device_pre_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev), errp);
}
static void pc_hv_balloon_plug(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
memory_device_plug(MEMORY_DEVICE(dev), MACHINE(hotplug_dev));
}
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)) {
x86_cpu_pre_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) {
virtio_md_pci_pre_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
/* Declare the APIC range as the reserved MSI region */
char *resv_prop_str = g_strdup_printf("0xfee00000:0xfeefffff:%d",
VIRTIO_IOMMU_RESV_MEM_T_MSI);
QList *reserved_regions = qlist_new();
qlist_append_str(reserved_regions, resv_prop_str);
qdev_prop_set_array(dev, "reserved-regions", reserved_regions);
g_free(resv_prop_str);
}
if (object_dynamic_cast(OBJECT(dev), TYPE_X86_IOMMU_DEVICE) ||
object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI)) {
PCMachineState *pcms = PC_MACHINE(hotplug_dev);
if (pcms->iommu) {
error_setg(errp, "QEMU does not support multiple vIOMMUs "
"for x86 yet.");
return;
}
pcms->iommu = dev;
} else if (object_dynamic_cast(OBJECT(dev), TYPE_HV_BALLOON)) {
pc_hv_balloon_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)) {
x86_cpu_plug(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) {
virtio_md_pci_plug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_dev), errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_HV_BALLOON)) {
pc_hv_balloon_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)) {
x86_cpu_unplug_request_cb(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) {
virtio_md_pci_unplug_request(VIRTIO_MD_PCI(dev), MACHINE(hotplug_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)) {
x86_cpu_unplug_cb(hotplug_dev, dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MD_PCI)) {
virtio_md_pci_unplug(VIRTIO_MD_PCI(dev), MACHINE(hotplug_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_MD_PCI) ||
object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_IOMMU_PCI) ||
object_dynamic_cast(OBJECT(dev), TYPE_HV_BALLOON) ||
object_dynamic_cast(OBJECT(dev), TYPE_X86_IOMMU_DEVICE)) {
return HOTPLUG_HANDLER(machine);
}
return NULL;
}
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_fd_bootchk(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
return pcms->fd_bootchk;
}
static void pc_machine_set_fd_bootchk(Object *obj, bool value, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
pcms->fd_bootchk = value;
}
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_hpet(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
return pcms->hpet_enabled;
}
static void pc_machine_set_hpet(Object *obj, bool value, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
pcms->hpet_enabled = value;
}
static bool pc_machine_get_i8042(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
return pcms->i8042_enabled;
}
static void pc_machine_set_i8042(Object *obj, bool value, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
pcms->i8042_enabled = value;
}
static bool pc_machine_get_default_bus_bypass_iommu(Object *obj, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
return pcms->default_bus_bypass_iommu;
}
static void pc_machine_set_default_bus_bypass_iommu(Object *obj, bool value,
Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
pcms->default_bus_bypass_iommu = value;
}
static void pc_machine_get_smbios_ep(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
SmbiosEntryPointType smbios_entry_point_type = pcms->smbios_entry_point_type;
visit_type_SmbiosEntryPointType(v, name, &smbios_entry_point_type, errp);
}
static void pc_machine_set_smbios_ep(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
visit_type_SmbiosEntryPointType(v, name, &pcms->smbios_entry_point_type, errp);
}
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);
uint64_t value;
if (!visit_type_size(v, name, &value, errp)) {
return;
}
if (value > 4 * GiB) {
error_setg(errp,
"Machine option 'max-ram-below-4g=%"PRIu64
"' expects size less than or equal to 4G", value);
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_get_max_fw_size(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
uint64_t value = pcms->max_fw_size;
visit_type_size(v, name, &value, errp);
}
static void pc_machine_set_max_fw_size(Object *obj, Visitor *v,
const char *name, void *opaque,
Error **errp)
{
PCMachineState *pcms = PC_MACHINE(obj);
uint64_t value;
if (!visit_type_size(v, name, &value, errp)) {
return;
}
/*
* We don't have a theoretically justifiable exact lower bound on the base
* address of any flash mapping. In practice, the IO-APIC MMIO range is
* [0xFEE00000..0xFEE01000] -- see IO_APIC_DEFAULT_ADDRESS --, leaving free
* only 18MiB-4KiB below 4GiB. For now, restrict the cumulative mapping to
* 16MiB in size.
*/
if (value > 16 * MiB) {
error_setg(errp,
"User specified max allowed firmware size %" PRIu64 " is "
"greater than 16MiB. If combined firmware size exceeds "
"16MiB the system may not boot, or experience intermittent"
"stability issues.",
value);
return;
}
pcms->max_fw_size = value;
}
static void pc_machine_initfn(Object *obj)
{
PCMachineState *pcms = PC_MACHINE(obj);
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
#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 */
pcms->smbios_entry_point_type = pcmc->default_smbios_ep_type;
pcms->south_bridge = pcmc->default_south_bridge;
/* acpi build is enabled by default if machine supports it */
pcms->acpi_build_enabled = pcmc->has_acpi_build;
pcms->smbus_enabled = true;
pcms->sata_enabled = true;
pcms->i8042_enabled = true;
pcms->max_fw_size = 8 * MiB;
#ifdef CONFIG_HPET
pcms->hpet_enabled = true;
#endif
pcms->fd_bootchk = true;
pcms->default_bus_bypass_iommu = false;
pc_system_flash_create(pcms);
pcms->pcspk = isa_new(TYPE_PC_SPEAKER);
object_property_add_alias(OBJECT(pcms), "pcspk-audiodev",
OBJECT(pcms->pcspk), "audiodev");
if (pcmc->pci_enabled) {
cxl_machine_init(obj, &pcms->cxl_devices_state);
}
pcms->machine_done.notify = pc_machine_done;
qemu_add_machine_init_done_notifier(&pcms->machine_done);
}
static void pc_machine_reset(MachineState *machine, ResetType type)
{
CPUState *cs;
X86CPU *cpu;
qemu_devices_reset(type);
/* 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);
x86_cpu_after_reset(cpu);
}
}
static void pc_machine_wakeup(MachineState *machine)
{
cpu_synchronize_all_states();
pc_machine_reset(machine, RESET_TYPE_WAKEUP);
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);
X86MachineClass *x86mc = X86_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->smbios_defaults = true;
pcmc->gigabyte_align = true;
pcmc->has_reserved_memory = true;
pcmc->enforce_amd_1tb_hole = true;
pcmc->isa_bios_alias = true;
pcmc->pvh_enabled = true;
pcmc->kvmclock_create_always = true;
x86mc->apic_xrupt_override = true;
assert(!mc->get_hotplug_handler);
mc->get_hotplug_handler = pc_get_hotplug_handler;
mc->hotplug_allowed = pc_hotplug_allowed;
mc->auto_enable_numa_with_memhp = true;
mc->auto_enable_numa_with_memdev = true;
mc->has_hotpluggable_cpus = true;
mc->default_boot_order = "cad";
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->smp_props.dies_supported = true;
mc->smp_props.modules_supported = true;
mc->default_ram_id = "pc.ram";
pcmc->default_smbios_ep_type = SMBIOS_ENTRY_POINT_TYPE_AUTO;
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_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_set_description(oc, PC_MACHINE_SMBUS,
"Enable/disable system management bus");
object_class_property_add_bool(oc, PC_MACHINE_SATA,
pc_machine_get_sata, pc_machine_set_sata);
object_class_property_set_description(oc, PC_MACHINE_SATA,
"Enable/disable Serial ATA bus");
object_class_property_add_bool(oc, "hpet",
pc_machine_get_hpet, pc_machine_set_hpet);
object_class_property_set_description(oc, "hpet",
"Enable/disable high precision event timer emulation");
object_class_property_add_bool(oc, PC_MACHINE_I8042,
pc_machine_get_i8042, pc_machine_set_i8042);
object_class_property_set_description(oc, PC_MACHINE_I8042,
"Enable/disable Intel 8042 PS/2 controller emulation");
object_class_property_add_bool(oc, "default-bus-bypass-iommu",
pc_machine_get_default_bus_bypass_iommu,
pc_machine_set_default_bus_bypass_iommu);
object_class_property_add(oc, PC_MACHINE_MAX_FW_SIZE, "size",
pc_machine_get_max_fw_size, pc_machine_set_max_fw_size,
NULL, NULL);
object_class_property_set_description(oc, PC_MACHINE_MAX_FW_SIZE,
"Maximum combined firmware size");
object_class_property_add(oc, PC_MACHINE_SMBIOS_EP, "str",
pc_machine_get_smbios_ep, pc_machine_set_smbios_ep,
NULL, NULL);
object_class_property_set_description(oc, PC_MACHINE_SMBIOS_EP,
"SMBIOS Entry Point type [32, 64]");
object_class_property_add_bool(oc, "fd-bootchk",
pc_machine_get_fd_bootchk,
pc_machine_set_fd_bootchk);
}
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)