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ad5b88b1f1
qemu/hw/i386/acpi-build.c
Michael S. Tsirkin ad5b88b1f1 acpi-build: mark RAM dirty on table update 
acpi build modifies internal FW CFG RAM on first access
but we forgot to mark it dirty.
If this RAM has been migrated already, it won't be
migrated again, returning corrupted tables to guest.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-11-24 20:57:10 +02:00

1808 lines
60 KiB
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/* Support for generating ACPI tables and passing them to Guests
*
* Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
* Copyright (C) 2006 Fabrice Bellard
* Copyright (C) 2013 Red Hat Inc
*
* Author: Michael S. Tsirkin <mst@redhat.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License along
* with this program; if not, see <http://www.gnu.org/licenses/>.
*/
#include "acpi-build.h"
#include <stddef.h>
#include <glib.h>
#include "qemu-common.h"
#include "qemu/bitmap.h"
#include "qemu/osdep.h"
#include "qemu/range.h"
#include "qemu/error-report.h"
#include "hw/pci/pci.h"
#include "qom/cpu.h"
#include "hw/i386/pc.h"
#include "target-i386/cpu.h"
#include "hw/timer/hpet.h"
#include "hw/i386/acpi-defs.h"
#include "hw/acpi/acpi.h"
#include "hw/nvram/fw_cfg.h"
#include "bios-linker-loader.h"
#include "hw/loader.h"
#include "hw/isa/isa.h"
#include "hw/acpi/memory_hotplug.h"
#include "sysemu/tpm.h"
#include "hw/acpi/tpm.h"
/* Supported chipsets: */
#include "hw/acpi/piix4.h"
#include "hw/acpi/pcihp.h"
#include "hw/i386/ich9.h"
#include "hw/pci/pci_bus.h"
#include "hw/pci-host/q35.h"
#include "hw/i386/intel_iommu.h"
#include "hw/i386/q35-acpi-dsdt.hex"
#include "hw/i386/acpi-dsdt.hex"
#include "qapi/qmp/qint.h"
#include "qom/qom-qobject.h"
#include "exec/ram_addr.h"
/* These are used to size the ACPI tables for -M pc-i440fx-1.7 and
* -M pc-i440fx-2.0. Even if the actual amount of AML generated grows
* a little bit, there should be plenty of free space since the DSDT
* shrunk by ~1.5k between QEMU 2.0 and QEMU 2.1.
*/
#define ACPI_BUILD_LEGACY_CPU_AML_SIZE 97
#define ACPI_BUILD_ALIGN_SIZE 0x1000
#define ACPI_BUILD_TABLE_SIZE 0x20000
typedef struct AcpiCpuInfo {
DECLARE_BITMAP(found_cpus, ACPI_CPU_HOTPLUG_ID_LIMIT);
} AcpiCpuInfo;
typedef struct AcpiMcfgInfo {
uint64_t mcfg_base;
uint32_t mcfg_size;
} AcpiMcfgInfo;
typedef struct AcpiPmInfo {
bool s3_disabled;
bool s4_disabled;
bool pcihp_bridge_en;
uint8_t s4_val;
uint16_t sci_int;
uint8_t acpi_enable_cmd;
uint8_t acpi_disable_cmd;
uint32_t gpe0_blk;
uint32_t gpe0_blk_len;
uint32_t io_base;
} AcpiPmInfo;
typedef struct AcpiMiscInfo {
bool has_hpet;
bool has_tpm;
DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX);
const unsigned char *dsdt_code;
unsigned dsdt_size;
uint16_t pvpanic_port;
} AcpiMiscInfo;
typedef struct AcpiBuildPciBusHotplugState {
GArray *device_table;
GArray *notify_table;
struct AcpiBuildPciBusHotplugState *parent;
bool pcihp_bridge_en;
} AcpiBuildPciBusHotplugState;
static void acpi_get_dsdt(AcpiMiscInfo *info)
{
uint16_t *applesmc_sta;
Object *piix = piix4_pm_find();
Object *lpc = ich9_lpc_find();
assert(!!piix != !!lpc);
if (piix) {
info->dsdt_code = AcpiDsdtAmlCode;
info->dsdt_size = sizeof AcpiDsdtAmlCode;
applesmc_sta = piix_dsdt_applesmc_sta;
}
if (lpc) {
info->dsdt_code = Q35AcpiDsdtAmlCode;
info->dsdt_size = sizeof Q35AcpiDsdtAmlCode;
applesmc_sta = q35_dsdt_applesmc_sta;
}
/* Patch in appropriate value for AppleSMC _STA */
*(uint8_t *)(info->dsdt_code + *applesmc_sta) =
applesmc_find() ? 0x0b : 0x00;
}
static
int acpi_add_cpu_info(Object *o, void *opaque)
{
AcpiCpuInfo *cpu = opaque;
uint64_t apic_id;
if (object_dynamic_cast(o, TYPE_CPU)) {
apic_id = object_property_get_int(o, "apic-id", NULL);
assert(apic_id < ACPI_CPU_HOTPLUG_ID_LIMIT);
set_bit(apic_id, cpu->found_cpus);
}
object_child_foreach(o, acpi_add_cpu_info, opaque);
return 0;
}
static void acpi_get_cpu_info(AcpiCpuInfo *cpu)
{
Object *root = object_get_root();
memset(cpu->found_cpus, 0, sizeof cpu->found_cpus);
object_child_foreach(root, acpi_add_cpu_info, cpu);
}
static void acpi_get_pm_info(AcpiPmInfo *pm)
{
Object *piix = piix4_pm_find();
Object *lpc = ich9_lpc_find();
Object *obj = NULL;
QObject *o;
if (piix) {
obj = piix;
}
if (lpc) {
obj = lpc;
}
assert(obj);
/* Fill in optional s3/s4 related properties */
o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL);
if (o) {
pm->s3_disabled = qint_get_int(qobject_to_qint(o));
} else {
pm->s3_disabled = false;
}
qobject_decref(o);
o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL);
if (o) {
pm->s4_disabled = qint_get_int(qobject_to_qint(o));
} else {
pm->s4_disabled = false;
}
qobject_decref(o);
o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL);
if (o) {
pm->s4_val = qint_get_int(qobject_to_qint(o));
} else {
pm->s4_val = false;
}
qobject_decref(o);
/* Fill in mandatory properties */
pm->sci_int = object_property_get_int(obj, ACPI_PM_PROP_SCI_INT, NULL);
pm->acpi_enable_cmd = object_property_get_int(obj,
ACPI_PM_PROP_ACPI_ENABLE_CMD,
NULL);
pm->acpi_disable_cmd = object_property_get_int(obj,
ACPI_PM_PROP_ACPI_DISABLE_CMD,
NULL);
pm->io_base = object_property_get_int(obj, ACPI_PM_PROP_PM_IO_BASE,
NULL);
pm->gpe0_blk = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK,
NULL);
pm->gpe0_blk_len = object_property_get_int(obj, ACPI_PM_PROP_GPE0_BLK_LEN,
NULL);
pm->pcihp_bridge_en =
object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support",
NULL);
}
static void acpi_get_misc_info(AcpiMiscInfo *info)
{
info->has_hpet = hpet_find();
info->has_tpm = tpm_find();
info->pvpanic_port = pvpanic_port();
}
static void acpi_get_pci_info(PcPciInfo *info)
{
Object *pci_host;
bool ambiguous;
pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
g_assert(!ambiguous);
g_assert(pci_host);
info->w32.begin = object_property_get_int(pci_host,
PCI_HOST_PROP_PCI_HOLE_START,
NULL);
info->w32.end = object_property_get_int(pci_host,
PCI_HOST_PROP_PCI_HOLE_END,
NULL);
info->w64.begin = object_property_get_int(pci_host,
PCI_HOST_PROP_PCI_HOLE64_START,
NULL);
info->w64.end = object_property_get_int(pci_host,
PCI_HOST_PROP_PCI_HOLE64_END,
NULL);
}
#define ACPI_BUILD_APPNAME "Bochs"
#define ACPI_BUILD_APPNAME6 "BOCHS "
#define ACPI_BUILD_APPNAME4 "BXPC"
#define ACPI_BUILD_DPRINTF(level, fmt, ...) do {} while (0)
#define ACPI_BUILD_TABLE_FILE "etc/acpi/tables"
#define ACPI_BUILD_RSDP_FILE "etc/acpi/rsdp"
#define ACPI_BUILD_TPMLOG_FILE "etc/tpm/log"
static void
build_header(GArray *linker, GArray *table_data,
AcpiTableHeader *h, const char *sig, int len, uint8_t rev)
{
memcpy(&h->signature, sig, 4);
h->length = cpu_to_le32(len);
h->revision = rev;
memcpy(h->oem_id, ACPI_BUILD_APPNAME6, 6);
memcpy(h->oem_table_id, ACPI_BUILD_APPNAME4, 4);
memcpy(h->oem_table_id + 4, sig, 4);
h->oem_revision = cpu_to_le32(1);
memcpy(h->asl_compiler_id, ACPI_BUILD_APPNAME4, 4);
h->asl_compiler_revision = cpu_to_le32(1);
h->checksum = 0;
/* Checksum to be filled in by Guest linker */
bios_linker_loader_add_checksum(linker, ACPI_BUILD_TABLE_FILE,
table_data->data, h, len, &h->checksum);
}
static inline GArray *build_alloc_array(void)
{
return g_array_new(false, true /* clear */, 1);
}
static inline void build_free_array(GArray *array)
{
g_array_free(array, true);
}
static inline void build_prepend_byte(GArray *array, uint8_t val)
{
g_array_prepend_val(array, val);
}
static inline void build_append_byte(GArray *array, uint8_t val)
{
g_array_append_val(array, val);
}
static inline void build_append_array(GArray *array, GArray *val)
{
g_array_append_vals(array, val->data, val->len);
}
static void GCC_FMT_ATTR(2, 3)
build_append_nameseg(GArray *array, const char *format, ...)
{
/* It would be nicer to use g_string_vprintf but it's only there in 2.22 */
char s[] = "XXXX";
int len;
va_list args;
va_start(args, format);
len = vsnprintf(s, sizeof s, format, args);
va_end(args);
assert(len == 4);
g_array_append_vals(array, s, len);
}
/* 5.4 Definition Block Encoding */
enum {
PACKAGE_LENGTH_1BYTE_SHIFT = 6, /* Up to 63 - use extra 2 bits. */
PACKAGE_LENGTH_2BYTE_SHIFT = 4,
PACKAGE_LENGTH_3BYTE_SHIFT = 12,
PACKAGE_LENGTH_4BYTE_SHIFT = 20,
};
static void build_prepend_package_length(GArray *package, unsigned min_bytes)
{
uint8_t byte;
unsigned length = package->len;
unsigned length_bytes;
if (length + 1 < (1 << PACKAGE_LENGTH_1BYTE_SHIFT)) {
length_bytes = 1;
} else if (length + 2 < (1 << PACKAGE_LENGTH_3BYTE_SHIFT)) {
length_bytes = 2;
} else if (length + 3 < (1 << PACKAGE_LENGTH_4BYTE_SHIFT)) {
length_bytes = 3;
} else {
length_bytes = 4;
}
/* Force length to at least min_bytes.
* This wastes memory but that's how bios did it.
*/
length_bytes = MAX(length_bytes, min_bytes);
/* PkgLength is the length of the inclusive length of the data. */
length += length_bytes;
switch (length_bytes) {
case 1:
byte = length;
build_prepend_byte(package, byte);
return;
case 4:
byte = length >> PACKAGE_LENGTH_4BYTE_SHIFT;
build_prepend_byte(package, byte);
length &= (1 << PACKAGE_LENGTH_4BYTE_SHIFT) - 1;
/* fall through */
case 3:
byte = length >> PACKAGE_LENGTH_3BYTE_SHIFT;
build_prepend_byte(package, byte);
length &= (1 << PACKAGE_LENGTH_3BYTE_SHIFT) - 1;
/* fall through */
case 2:
byte = length >> PACKAGE_LENGTH_2BYTE_SHIFT;
build_prepend_byte(package, byte);
length &= (1 << PACKAGE_LENGTH_2BYTE_SHIFT) - 1;
/* fall through */
}
/*
* Most significant two bits of byte zero indicate how many following bytes
* are in PkgLength encoding.
*/
byte = ((length_bytes - 1) << PACKAGE_LENGTH_1BYTE_SHIFT) | length;
build_prepend_byte(package, byte);
}
static void build_package(GArray *package, uint8_t op, unsigned min_bytes)
{
build_prepend_package_length(package, min_bytes);
build_prepend_byte(package, op);
}
static void build_extop_package(GArray *package, uint8_t op)
{
build_package(package, op, 1);
build_prepend_byte(package, 0x5B); /* ExtOpPrefix */
}
static void build_append_value(GArray *table, uint32_t value, int size)
{
uint8_t prefix;
int i;
switch (size) {
case 1:
prefix = 0x0A; /* BytePrefix */
break;
case 2:
prefix = 0x0B; /* WordPrefix */
break;
case 4:
prefix = 0x0C; /* DWordPrefix */
break;
default:
assert(0);
return;
}
build_append_byte(table, prefix);
for (i = 0; i < size; ++i) {
build_append_byte(table, value & 0xFF);
value = value >> 8;
}
}
static void build_append_int(GArray *table, uint32_t value)
{
if (value == 0x00) {
build_append_byte(table, 0x00); /* ZeroOp */
} else if (value == 0x01) {
build_append_byte(table, 0x01); /* OneOp */
} else if (value <= 0xFF) {
build_append_value(table, value, 1);
} else if (value <= 0xFFFF) {
build_append_value(table, value, 2);
} else {
build_append_value(table, value, 4);
}
}
static GArray *build_alloc_method(const char *name, uint8_t arg_count)
{
GArray *method = build_alloc_array();
build_append_nameseg(method, "%s", name);
build_append_byte(method, arg_count); /* MethodFlags: ArgCount */
return method;
}
static void build_append_and_cleanup_method(GArray *device, GArray *method)
{
uint8_t op = 0x14; /* MethodOp */
build_package(method, op, 0);
build_append_array(device, method);
build_free_array(method);
}
static void build_append_notify_target_ifequal(GArray *method,
GArray *target_name,
uint32_t value, int size)
{
GArray *notify = build_alloc_array();
uint8_t op = 0xA0; /* IfOp */
build_append_byte(notify, 0x93); /* LEqualOp */
build_append_byte(notify, 0x68); /* Arg0Op */
build_append_value(notify, value, size);
build_append_byte(notify, 0x86); /* NotifyOp */
build_append_array(notify, target_name);
build_append_byte(notify, 0x69); /* Arg1Op */
/* Pack it up */
build_package(notify, op, 1);
build_append_array(method, notify);
build_free_array(notify);
}
/* End here */
#define ACPI_PORT_SMI_CMD 0x00b2 /* TODO: this is APM_CNT_IOPORT */
static inline void *acpi_data_push(GArray *table_data, unsigned size)
{
unsigned off = table_data->len;
g_array_set_size(table_data, off + size);
return table_data->data + off;
}
static unsigned acpi_data_len(GArray *table)
{
#if GLIB_CHECK_VERSION(2, 22, 0)
assert(g_array_get_element_size(table) == 1);
#endif
return table->len;
}
static void acpi_align_size(GArray *blob, unsigned align)
{
/* Align size to multiple of given size. This reduces the chance
* we need to change size in the future (breaking cross version migration).
*/
g_array_set_size(blob, ROUND_UP(acpi_data_len(blob), align));
}
/* Set a value within table in a safe manner */
#define ACPI_BUILD_SET_LE(table, size, off, bits, val) \
do { \
uint64_t ACPI_BUILD_SET_LE_val = cpu_to_le64(val); \
memcpy(acpi_data_get_ptr(table, size, off, \
(bits) / BITS_PER_BYTE), \
&ACPI_BUILD_SET_LE_val, \
(bits) / BITS_PER_BYTE); \
} while (0)
static inline void *acpi_data_get_ptr(uint8_t *table_data, unsigned table_size,
unsigned off, unsigned size)
{
assert(off + size > off);
assert(off + size <= table_size);
return table_data + off;
}
static inline void acpi_add_table(GArray *table_offsets, GArray *table_data)
{
uint32_t offset = cpu_to_le32(table_data->len);
g_array_append_val(table_offsets, offset);
}
/* FACS */
static void
build_facs(GArray *table_data, GArray *linker, PcGuestInfo *guest_info)
{
AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs);
memcpy(&facs->signature, "FACS", 4);
facs->length = cpu_to_le32(sizeof(*facs));
}
/* Load chipset information in FADT */
static void fadt_setup(AcpiFadtDescriptorRev1 *fadt, AcpiPmInfo *pm)
{
fadt->model = 1;
fadt->reserved1 = 0;
fadt->sci_int = cpu_to_le16(pm->sci_int);
fadt->smi_cmd = cpu_to_le32(ACPI_PORT_SMI_CMD);
fadt->acpi_enable = pm->acpi_enable_cmd;
fadt->acpi_disable = pm->acpi_disable_cmd;
/* EVT, CNT, TMR offset matches hw/acpi/core.c */
fadt->pm1a_evt_blk = cpu_to_le32(pm->io_base);
fadt->pm1a_cnt_blk = cpu_to_le32(pm->io_base + 0x04);
fadt->pm_tmr_blk = cpu_to_le32(pm->io_base + 0x08);
fadt->gpe0_blk = cpu_to_le32(pm->gpe0_blk);
/* EVT, CNT, TMR length matches hw/acpi/core.c */
fadt->pm1_evt_len = 4;
fadt->pm1_cnt_len = 2;
fadt->pm_tmr_len = 4;
fadt->gpe0_blk_len = pm->gpe0_blk_len;
fadt->plvl2_lat = cpu_to_le16(0xfff); /* C2 state not supported */
fadt->plvl3_lat = cpu_to_le16(0xfff); /* C3 state not supported */
fadt->flags = cpu_to_le32((1 << ACPI_FADT_F_WBINVD) |
(1 << ACPI_FADT_F_PROC_C1) |
(1 << ACPI_FADT_F_SLP_BUTTON) |
(1 << ACPI_FADT_F_RTC_S4));
fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_USE_PLATFORM_CLOCK);
/* APIC destination mode ("Flat Logical") has an upper limit of 8 CPUs
* For more than 8 CPUs, "Clustered Logical" mode has to be used
*/
if (max_cpus > 8) {
fadt->flags |= cpu_to_le32(1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL);
}
}
/* FADT */
static void
build_fadt(GArray *table_data, GArray *linker, AcpiPmInfo *pm,
unsigned facs, unsigned dsdt)
{
AcpiFadtDescriptorRev1 *fadt = acpi_data_push(table_data, sizeof(*fadt));
fadt->firmware_ctrl = cpu_to_le32(facs);
/* FACS address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
ACPI_BUILD_TABLE_FILE,
table_data, &fadt->firmware_ctrl,
sizeof fadt->firmware_ctrl);
fadt->dsdt = cpu_to_le32(dsdt);
/* DSDT address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
ACPI_BUILD_TABLE_FILE,
table_data, &fadt->dsdt,
sizeof fadt->dsdt);
fadt_setup(fadt, pm);
build_header(linker, table_data,
(void *)fadt, "FACP", sizeof(*fadt), 1);
}
static void
build_madt(GArray *table_data, GArray *linker, AcpiCpuInfo *cpu,
PcGuestInfo *guest_info)
{
int madt_start = table_data->len;
AcpiMultipleApicTable *madt;
AcpiMadtIoApic *io_apic;
AcpiMadtIntsrcovr *intsrcovr;
AcpiMadtLocalNmi *local_nmi;
int i;
madt = acpi_data_push(table_data, sizeof *madt);
madt->local_apic_address = cpu_to_le32(APIC_DEFAULT_ADDRESS);
madt->flags = cpu_to_le32(1);
for (i = 0; i < guest_info->apic_id_limit; i++) {
AcpiMadtProcessorApic *apic = acpi_data_push(table_data, sizeof *apic);
apic->type = ACPI_APIC_PROCESSOR;
apic->length = sizeof(*apic);
apic->processor_id = i;
apic->local_apic_id = i;
if (test_bit(i, cpu->found_cpus)) {
apic->flags = cpu_to_le32(1);
} else {
apic->flags = cpu_to_le32(0);
}
}
io_apic = acpi_data_push(table_data, sizeof *io_apic);
io_apic->type = ACPI_APIC_IO;
io_apic->length = sizeof(*io_apic);
#define ACPI_BUILD_IOAPIC_ID 0x0
io_apic->io_apic_id = ACPI_BUILD_IOAPIC_ID;
io_apic->address = cpu_to_le32(IO_APIC_DEFAULT_ADDRESS);
io_apic->interrupt = cpu_to_le32(0);
if (guest_info->apic_xrupt_override) {
intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
intsrcovr->length = sizeof(*intsrcovr);
intsrcovr->source = 0;
intsrcovr->gsi = cpu_to_le32(2);
intsrcovr->flags = cpu_to_le16(0); /* conforms to bus specifications */
}
for (i = 1; i < 16; i++) {
#define ACPI_BUILD_PCI_IRQS ((1<<5) | (1<<9) | (1<<10) | (1<<11))
if (!(ACPI_BUILD_PCI_IRQS & (1 << i))) {
/* No need for a INT source override structure. */
continue;
}
intsrcovr = acpi_data_push(table_data, sizeof *intsrcovr);
intsrcovr->type = ACPI_APIC_XRUPT_OVERRIDE;
intsrcovr->length = sizeof(*intsrcovr);
intsrcovr->source = i;
intsrcovr->gsi = cpu_to_le32(i);
intsrcovr->flags = cpu_to_le16(0xd); /* active high, level triggered */
}
local_nmi = acpi_data_push(table_data, sizeof *local_nmi);
local_nmi->type = ACPI_APIC_LOCAL_NMI;
local_nmi->length = sizeof(*local_nmi);
local_nmi->processor_id = 0xff; /* all processors */
local_nmi->flags = cpu_to_le16(0);
local_nmi->lint = 1; /* ACPI_LINT1 */
build_header(linker, table_data,
(void *)(table_data->data + madt_start), "APIC",
table_data->len - madt_start, 1);
}
/* Encode a hex value */
static inline char acpi_get_hex(uint32_t val)
{
val &= 0x0f;
return (val <= 9) ? ('0' + val) : ('A' + val - 10);
}
#include "hw/i386/ssdt-proc.hex"
/* 0x5B 0x83 ProcessorOp PkgLength NameString ProcID */
#define ACPI_PROC_OFFSET_CPUHEX (*ssdt_proc_name - *ssdt_proc_start + 2)
#define ACPI_PROC_OFFSET_CPUID1 (*ssdt_proc_name - *ssdt_proc_start + 4)
#define ACPI_PROC_OFFSET_CPUID2 (*ssdt_proc_id - *ssdt_proc_start)
#define ACPI_PROC_SIZEOF (*ssdt_proc_end - *ssdt_proc_start)
#define ACPI_PROC_AML (ssdp_proc_aml + *ssdt_proc_start)
/* 0x5B 0x82 DeviceOp PkgLength NameString */
#define ACPI_PCIHP_OFFSET_HEX (*ssdt_pcihp_name - *ssdt_pcihp_start + 1)
#define ACPI_PCIHP_OFFSET_ID (*ssdt_pcihp_id - *ssdt_pcihp_start)
#define ACPI_PCIHP_OFFSET_ADR (*ssdt_pcihp_adr - *ssdt_pcihp_start)
#define ACPI_PCIHP_OFFSET_EJ0 (*ssdt_pcihp_ej0 - *ssdt_pcihp_start)
#define ACPI_PCIHP_SIZEOF (*ssdt_pcihp_end - *ssdt_pcihp_start)
#define ACPI_PCIHP_AML (ssdp_pcihp_aml + *ssdt_pcihp_start)
#define ACPI_PCINOHP_OFFSET_HEX (*ssdt_pcinohp_name - *ssdt_pcinohp_start + 1)
#define ACPI_PCINOHP_OFFSET_ADR (*ssdt_pcinohp_adr - *ssdt_pcinohp_start)
#define ACPI_PCINOHP_SIZEOF (*ssdt_pcinohp_end - *ssdt_pcinohp_start)
#define ACPI_PCINOHP_AML (ssdp_pcihp_aml + *ssdt_pcinohp_start)
#define ACPI_PCIVGA_OFFSET_HEX (*ssdt_pcivga_name - *ssdt_pcivga_start + 1)
#define ACPI_PCIVGA_OFFSET_ADR (*ssdt_pcivga_adr - *ssdt_pcivga_start)
#define ACPI_PCIVGA_SIZEOF (*ssdt_pcivga_end - *ssdt_pcivga_start)
#define ACPI_PCIVGA_AML (ssdp_pcihp_aml + *ssdt_pcivga_start)
#define ACPI_PCIQXL_OFFSET_HEX (*ssdt_pciqxl_name - *ssdt_pciqxl_start + 1)
#define ACPI_PCIQXL_OFFSET_ADR (*ssdt_pciqxl_adr - *ssdt_pciqxl_start)
#define ACPI_PCIQXL_SIZEOF (*ssdt_pciqxl_end - *ssdt_pciqxl_start)
#define ACPI_PCIQXL_AML (ssdp_pcihp_aml + *ssdt_pciqxl_start)
#include "hw/i386/ssdt-mem.hex"
/* 0x5B 0x82 DeviceOp PkgLength NameString DimmID */
#define ACPI_MEM_OFFSET_HEX (*ssdt_mem_name - *ssdt_mem_start + 2)
#define ACPI_MEM_OFFSET_ID (*ssdt_mem_id - *ssdt_mem_start + 7)
#define ACPI_MEM_SIZEOF (*ssdt_mem_end - *ssdt_mem_start)
#define ACPI_MEM_AML (ssdm_mem_aml + *ssdt_mem_start)
#define ACPI_SSDT_SIGNATURE 0x54445353 /* SSDT */
#define ACPI_SSDT_HEADER_LENGTH 36
#include "hw/i386/ssdt-misc.hex"
#include "hw/i386/ssdt-pcihp.hex"
#include "hw/i386/ssdt-tpm.hex"
static void
build_append_notify_method(GArray *device, const char *name,
const char *format, int count)
{
int i;
GArray *method = build_alloc_method(name, 2);
for (i = 0; i < count; i++) {
GArray *target = build_alloc_array();
build_append_nameseg(target, format, i);
assert(i < 256); /* Fits in 1 byte */
build_append_notify_target_ifequal(method, target, i, 1);
build_free_array(target);
}
build_append_and_cleanup_method(device, method);
}
static void patch_pcihp(int slot, uint8_t *ssdt_ptr)
{
unsigned devfn = PCI_DEVFN(slot, 0);
ssdt_ptr[ACPI_PCIHP_OFFSET_HEX] = acpi_get_hex(devfn >> 4);
ssdt_ptr[ACPI_PCIHP_OFFSET_HEX + 1] = acpi_get_hex(devfn);
ssdt_ptr[ACPI_PCIHP_OFFSET_ID] = slot;
ssdt_ptr[ACPI_PCIHP_OFFSET_ADR + 2] = slot;
}
static void patch_pcinohp(int slot, uint8_t *ssdt_ptr)
{
unsigned devfn = PCI_DEVFN(slot, 0);
ssdt_ptr[ACPI_PCINOHP_OFFSET_HEX] = acpi_get_hex(devfn >> 4);
ssdt_ptr[ACPI_PCINOHP_OFFSET_HEX + 1] = acpi_get_hex(devfn);
ssdt_ptr[ACPI_PCINOHP_OFFSET_ADR + 2] = slot;
}
static void patch_pcivga(int slot, uint8_t *ssdt_ptr)
{
unsigned devfn = PCI_DEVFN(slot, 0);
ssdt_ptr[ACPI_PCIVGA_OFFSET_HEX] = acpi_get_hex(devfn >> 4);
ssdt_ptr[ACPI_PCIVGA_OFFSET_HEX + 1] = acpi_get_hex(devfn);
ssdt_ptr[ACPI_PCIVGA_OFFSET_ADR + 2] = slot;
}
static void patch_pciqxl(int slot, uint8_t *ssdt_ptr)
{
unsigned devfn = PCI_DEVFN(slot, 0);
ssdt_ptr[ACPI_PCIQXL_OFFSET_HEX] = acpi_get_hex(devfn >> 4);
ssdt_ptr[ACPI_PCIQXL_OFFSET_HEX + 1] = acpi_get_hex(devfn);
ssdt_ptr[ACPI_PCIQXL_OFFSET_ADR + 2] = slot;
}
/* Assign BSEL property to all buses. In the future, this can be changed
* to only assign to buses that support hotplug.
*/
static void *acpi_set_bsel(PCIBus *bus, void *opaque)
{
unsigned *bsel_alloc = opaque;
unsigned *bus_bsel;
if (qbus_is_hotpluggable(BUS(bus))) {
bus_bsel = g_malloc(sizeof *bus_bsel);
*bus_bsel = (*bsel_alloc)++;
object_property_add_uint32_ptr(OBJECT(bus), ACPI_PCIHP_PROP_BSEL,
bus_bsel, NULL);
}
return bsel_alloc;
}
static void acpi_set_pci_info(void)
{
PCIBus *bus = find_i440fx(); /* TODO: Q35 support */
unsigned bsel_alloc = 0;
if (bus) {
/* Scan all PCI buses. Set property to enable acpi based hotplug. */
pci_for_each_bus_depth_first(bus, acpi_set_bsel, NULL, &bsel_alloc);
}
}
static void build_pci_bus_state_init(AcpiBuildPciBusHotplugState *state,
AcpiBuildPciBusHotplugState *parent,
bool pcihp_bridge_en)
{
state->parent = parent;
state->device_table = build_alloc_array();
state->notify_table = build_alloc_array();
state->pcihp_bridge_en = pcihp_bridge_en;
}
static void build_pci_bus_state_cleanup(AcpiBuildPciBusHotplugState *state)
{
build_free_array(state->device_table);
build_free_array(state->notify_table);
}
static void *build_pci_bus_begin(PCIBus *bus, void *parent_state)
{
AcpiBuildPciBusHotplugState *parent = parent_state;
AcpiBuildPciBusHotplugState *child = g_malloc(sizeof *child);
build_pci_bus_state_init(child, parent, parent->pcihp_bridge_en);
return child;
}
static void build_pci_bus_end(PCIBus *bus, void *bus_state)
{
AcpiBuildPciBusHotplugState *child = bus_state;
AcpiBuildPciBusHotplugState *parent = child->parent;
GArray *bus_table = build_alloc_array();
DECLARE_BITMAP(slot_hotplug_enable, PCI_SLOT_MAX);
DECLARE_BITMAP(slot_device_present, PCI_SLOT_MAX);
DECLARE_BITMAP(slot_device_system, PCI_SLOT_MAX);
DECLARE_BITMAP(slot_device_vga, PCI_SLOT_MAX);
DECLARE_BITMAP(slot_device_qxl, PCI_SLOT_MAX);
uint8_t op;
int i;
QObject *bsel;
GArray *method;
bool bus_hotplug_support = false;
/*
* Skip bridge subtree creation if bridge hotplug is disabled
* to make acpi tables compatible with legacy machine types.
*/
if (!child->pcihp_bridge_en && bus->parent_dev) {
return;
}
if (bus->parent_dev) {
op = 0x82; /* DeviceOp */
build_append_nameseg(bus_table, "S%.02X_",
bus->parent_dev->devfn);
build_append_byte(bus_table, 0x08); /* NameOp */
build_append_nameseg(bus_table, "_SUN");
build_append_value(bus_table, PCI_SLOT(bus->parent_dev->devfn), 1);
build_append_byte(bus_table, 0x08); /* NameOp */
build_append_nameseg(bus_table, "_ADR");
build_append_value(bus_table, (PCI_SLOT(bus->parent_dev->devfn) << 16) |
PCI_FUNC(bus->parent_dev->devfn), 4);
} else {
op = 0x10; /* ScopeOp */;
build_append_nameseg(bus_table, "PCI0");
}
bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL);
if (bsel) {
build_append_byte(bus_table, 0x08); /* NameOp */
build_append_nameseg(bus_table, "BSEL");
build_append_int(bus_table, qint_get_int(qobject_to_qint(bsel)));
memset(slot_hotplug_enable, 0xff, sizeof slot_hotplug_enable);
} else {
/* No bsel - no slots are hot-pluggable */
memset(slot_hotplug_enable, 0x00, sizeof slot_hotplug_enable);
}
memset(slot_device_present, 0x00, sizeof slot_device_present);
memset(slot_device_system, 0x00, sizeof slot_device_present);
memset(slot_device_vga, 0x00, sizeof slot_device_vga);
memset(slot_device_qxl, 0x00, sizeof slot_device_qxl);
for (i = 0; i < ARRAY_SIZE(bus->devices); i += PCI_FUNC_MAX) {
DeviceClass *dc;
PCIDeviceClass *pc;
PCIDevice *pdev = bus->devices[i];
int slot = PCI_SLOT(i);
bool bridge_in_acpi;
if (!pdev) {
continue;
}
set_bit(slot, slot_device_present);
pc = PCI_DEVICE_GET_CLASS(pdev);
dc = DEVICE_GET_CLASS(pdev);
/* When hotplug for bridges is enabled, bridges are
* described in ACPI separately (see build_pci_bus_end).
* In this case they aren't themselves hot-pluggable.
*/
bridge_in_acpi = pc->is_bridge && child->pcihp_bridge_en;
if (pc->class_id == PCI_CLASS_BRIDGE_ISA || bridge_in_acpi) {
set_bit(slot, slot_device_system);
}
if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
set_bit(slot, slot_device_vga);
if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) {
set_bit(slot, slot_device_qxl);
}
}
if (!dc->hotpluggable || bridge_in_acpi) {
clear_bit(slot, slot_hotplug_enable);
}
}
/* Append Device object for each slot */
for (i = 0; i < PCI_SLOT_MAX; i++) {
bool can_eject = test_bit(i, slot_hotplug_enable);
bool present = test_bit(i, slot_device_present);
bool vga = test_bit(i, slot_device_vga);
bool qxl = test_bit(i, slot_device_qxl);
bool system = test_bit(i, slot_device_system);
if (can_eject) {
void *pcihp = acpi_data_push(bus_table,
ACPI_PCIHP_SIZEOF);
memcpy(pcihp, ACPI_PCIHP_AML, ACPI_PCIHP_SIZEOF);
patch_pcihp(i, pcihp);
bus_hotplug_support = true;
} else if (qxl) {
void *pcihp = acpi_data_push(bus_table,
ACPI_PCIQXL_SIZEOF);
memcpy(pcihp, ACPI_PCIQXL_AML, ACPI_PCIQXL_SIZEOF);
patch_pciqxl(i, pcihp);
} else if (vga) {
void *pcihp = acpi_data_push(bus_table,
ACPI_PCIVGA_SIZEOF);
memcpy(pcihp, ACPI_PCIVGA_AML, ACPI_PCIVGA_SIZEOF);
patch_pcivga(i, pcihp);
} else if (system) {
/* Nothing to do: system devices are in DSDT or in SSDT above. */
} else if (present) {
void *pcihp = acpi_data_push(bus_table,
ACPI_PCINOHP_SIZEOF);
memcpy(pcihp, ACPI_PCINOHP_AML, ACPI_PCINOHP_SIZEOF);
patch_pcinohp(i, pcihp);
}
}
if (bsel) {
method = build_alloc_method("DVNT", 2);
for (i = 0; i < PCI_SLOT_MAX; i++) {
GArray *notify;
uint8_t op;
if (!test_bit(i, slot_hotplug_enable)) {
continue;
}
notify = build_alloc_array();
op = 0xA0; /* IfOp */
build_append_byte(notify, 0x7B); /* AndOp */
build_append_byte(notify, 0x68); /* Arg0Op */
build_append_int(notify, 0x1U << i);
build_append_byte(notify, 0x00); /* NullName */
build_append_byte(notify, 0x86); /* NotifyOp */
build_append_nameseg(notify, "S%.02X_", PCI_DEVFN(i, 0));
build_append_byte(notify, 0x69); /* Arg1Op */
/* Pack it up */
build_package(notify, op, 0);
build_append_array(method, notify);
build_free_array(notify);
}
build_append_and_cleanup_method(bus_table, method);
}
/* Append PCNT method to notify about events on local and child buses.
* Add unconditionally for root since DSDT expects it.
*/
if (bus_hotplug_support || child->notify_table->len || !bus->parent_dev) {
method = build_alloc_method("PCNT", 0);
/* If bus supports hotplug select it and notify about local events */
if (bsel) {
build_append_byte(method, 0x70); /* StoreOp */
build_append_int(method, qint_get_int(qobject_to_qint(bsel)));
build_append_nameseg(method, "BNUM");
build_append_nameseg(method, "DVNT");
build_append_nameseg(method, "PCIU");
build_append_int(method, 1); /* Device Check */
build_append_nameseg(method, "DVNT");
build_append_nameseg(method, "PCID");
build_append_int(method, 3); /* Eject Request */
}
/* Notify about child bus events in any case */
build_append_array(method, child->notify_table);
build_append_and_cleanup_method(bus_table, method);
/* Append description of child buses */
build_append_array(bus_table, child->device_table);
/* Pack it up */
if (bus->parent_dev) {
build_extop_package(bus_table, op);
} else {
build_package(bus_table, op, 0);
}
/* Append our bus description to parent table */
build_append_array(parent->device_table, bus_table);
/* Also tell parent how to notify us, invoking PCNT method.
* At the moment this is not needed for root as we have a single root.
*/
if (bus->parent_dev) {
build_append_byte(parent->notify_table, '^'); /* ParentPrefixChar */
build_append_byte(parent->notify_table, 0x2E); /* DualNamePrefix */
build_append_nameseg(parent->notify_table, "S%.02X_",
bus->parent_dev->devfn);
build_append_nameseg(parent->notify_table, "PCNT");
}
}
qobject_decref(bsel);
build_free_array(bus_table);
build_pci_bus_state_cleanup(child);
g_free(child);
}
static void patch_pci_windows(PcPciInfo *pci, uint8_t *start, unsigned size)
{
ACPI_BUILD_SET_LE(start, size, acpi_pci32_start[0], 32, pci->w32.begin);
ACPI_BUILD_SET_LE(start, size, acpi_pci32_end[0], 32, pci->w32.end - 1);
if (pci->w64.end || pci->w64.begin) {
ACPI_BUILD_SET_LE(start, size, acpi_pci64_valid[0], 8, 1);
ACPI_BUILD_SET_LE(start, size, acpi_pci64_start[0], 64, pci->w64.begin);
ACPI_BUILD_SET_LE(start, size, acpi_pci64_end[0], 64, pci->w64.end - 1);
ACPI_BUILD_SET_LE(start, size, acpi_pci64_length[0], 64, pci->w64.end - pci->w64.begin);
} else {
ACPI_BUILD_SET_LE(start, size, acpi_pci64_valid[0], 8, 0);
}
}
static void
build_ssdt(GArray *table_data, GArray *linker,
AcpiCpuInfo *cpu, AcpiPmInfo *pm, AcpiMiscInfo *misc,
PcPciInfo *pci, PcGuestInfo *guest_info)
{
MachineState *machine = MACHINE(qdev_get_machine());
uint32_t nr_mem = machine->ram_slots;
unsigned acpi_cpus = guest_info->apic_id_limit;
int ssdt_start = table_data->len;
uint8_t *ssdt_ptr;
int i;
/* The current AML generator can cover the APIC ID range [0..255],
* inclusive, for VCPU hotplug. */
QEMU_BUILD_BUG_ON(ACPI_CPU_HOTPLUG_ID_LIMIT > 256);
g_assert(acpi_cpus <= ACPI_CPU_HOTPLUG_ID_LIMIT);
/* Copy header and patch values in the S3_ / S4_ / S5_ packages */
ssdt_ptr = acpi_data_push(table_data, sizeof(ssdp_misc_aml));
memcpy(ssdt_ptr, ssdp_misc_aml, sizeof(ssdp_misc_aml));
if (pm->s3_disabled) {
ssdt_ptr[acpi_s3_name[0]] = 'X';
}
if (pm->s4_disabled) {
ssdt_ptr[acpi_s4_name[0]] = 'X';
} else {
ssdt_ptr[acpi_s4_pkg[0] + 1] = ssdt_ptr[acpi_s4_pkg[0] + 3] =
pm->s4_val;
}
patch_pci_windows(pci, ssdt_ptr, sizeof(ssdp_misc_aml));
ACPI_BUILD_SET_LE(ssdt_ptr, sizeof(ssdp_misc_aml),
ssdt_isa_pest[0], 16, misc->pvpanic_port);
ACPI_BUILD_SET_LE(ssdt_ptr, sizeof(ssdp_misc_aml),
ssdt_mctrl_nr_slots[0], 32, nr_mem);
{
GArray *sb_scope = build_alloc_array();
uint8_t op = 0x10; /* ScopeOp */
build_append_nameseg(sb_scope, "_SB_");
/* build Processor object for each processor */
for (i = 0; i < acpi_cpus; i++) {
uint8_t *proc = acpi_data_push(sb_scope, ACPI_PROC_SIZEOF);
memcpy(proc, ACPI_PROC_AML, ACPI_PROC_SIZEOF);
proc[ACPI_PROC_OFFSET_CPUHEX] = acpi_get_hex(i >> 4);
proc[ACPI_PROC_OFFSET_CPUHEX+1] = acpi_get_hex(i);
proc[ACPI_PROC_OFFSET_CPUID1] = i;
proc[ACPI_PROC_OFFSET_CPUID2] = i;
}
/* build this code:
* Method(NTFY, 2) {If (LEqual(Arg0, 0x00)) {Notify(CP00, Arg1)} ...}
*/
/* Arg0 = Processor ID = APIC ID */
build_append_notify_method(sb_scope, "NTFY", "CP%0.02X", acpi_cpus);
/* build "Name(CPON, Package() { One, One, ..., Zero, Zero, ... })" */
build_append_byte(sb_scope, 0x08); /* NameOp */
build_append_nameseg(sb_scope, "CPON");
{
GArray *package = build_alloc_array();
uint8_t op;
/*
* Note: The ability to create variable-sized packages was first introduced in ACPI 2.0. ACPI 1.0 only
* allowed fixed-size packages with up to 255 elements.
* Windows guests up to win2k8 fail when VarPackageOp is used.
*/
if (acpi_cpus <= 255) {
op = 0x12; /* PackageOp */
build_append_byte(package, acpi_cpus); /* NumElements */
} else {
op = 0x13; /* VarPackageOp */
build_append_int(package, acpi_cpus); /* VarNumElements */
}
for (i = 0; i < acpi_cpus; i++) {
uint8_t b = test_bit(i, cpu->found_cpus) ? 0x01 : 0x00;
build_append_byte(package, b);
}
build_package(package, op, 2);
build_append_array(sb_scope, package);
build_free_array(package);
}
if (nr_mem) {
assert(nr_mem <= ACPI_MAX_RAM_SLOTS);
/* build memory devices */
for (i = 0; i < nr_mem; i++) {
char id[3];
uint8_t *mem = acpi_data_push(sb_scope, ACPI_MEM_SIZEOF);
snprintf(id, sizeof(id), "%02X", i);
memcpy(mem, ACPI_MEM_AML, ACPI_MEM_SIZEOF);
memcpy(mem + ACPI_MEM_OFFSET_HEX, id, 2);
memcpy(mem + ACPI_MEM_OFFSET_ID, id, 2);
}
/* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) {
* If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ...
*/
build_append_notify_method(sb_scope,
stringify(MEMORY_SLOT_NOTIFY_METHOD),
"MP%0.02X", nr_mem);
}
{
AcpiBuildPciBusHotplugState hotplug_state;
Object *pci_host;
PCIBus *bus = NULL;
bool ambiguous;
pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
if (!ambiguous && pci_host) {
bus = PCI_HOST_BRIDGE(pci_host)->bus;
}
build_pci_bus_state_init(&hotplug_state, NULL, pm->pcihp_bridge_en);
if (bus) {
/* Scan all PCI buses. Generate tables to support hotplug. */
pci_for_each_bus_depth_first(bus, build_pci_bus_begin,
build_pci_bus_end, &hotplug_state);
}
build_append_array(sb_scope, hotplug_state.device_table);
build_pci_bus_state_cleanup(&hotplug_state);
}
build_package(sb_scope, op, 3);
build_append_array(table_data, sb_scope);
build_free_array(sb_scope);
}
build_header(linker, table_data,
(void *)(table_data->data + ssdt_start),
"SSDT", table_data->len - ssdt_start, 1);
}
static void
build_hpet(GArray *table_data, GArray *linker)
{
Acpi20Hpet *hpet;
hpet = acpi_data_push(table_data, sizeof(*hpet));
/* Note timer_block_id value must be kept in sync with value advertised by
* emulated hpet
*/
hpet->timer_block_id = cpu_to_le32(0x8086a201);
hpet->addr.address = cpu_to_le64(HPET_BASE);
build_header(linker, table_data,
(void *)hpet, "HPET", sizeof(*hpet), 1);
}
static void
build_tpm_tcpa(GArray *table_data, GArray *linker, GArray *tcpalog)
{
Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa);
uint64_t log_area_start_address = acpi_data_len(tcpalog);
tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT);
tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE);
tcpa->log_area_start_address = cpu_to_le64(log_area_start_address);
bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, 1,
false /* high memory */);
/* log area start address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
ACPI_BUILD_TPMLOG_FILE,
table_data, &tcpa->log_area_start_address,
sizeof(tcpa->log_area_start_address));
build_header(linker, table_data,
(void *)tcpa, "TCPA", sizeof(*tcpa), 2);
acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE);
}
static void
build_tpm_ssdt(GArray *table_data, GArray *linker)
{
void *tpm_ptr;
tpm_ptr = acpi_data_push(table_data, sizeof(ssdt_tpm_aml));
memcpy(tpm_ptr, ssdt_tpm_aml, sizeof(ssdt_tpm_aml));
}
typedef enum {
MEM_AFFINITY_NOFLAGS = 0,
MEM_AFFINITY_ENABLED = (1 << 0),
MEM_AFFINITY_HOTPLUGGABLE = (1 << 1),
MEM_AFFINITY_NON_VOLATILE = (1 << 2),
} MemoryAffinityFlags;
static void
acpi_build_srat_memory(AcpiSratMemoryAffinity *numamem, uint64_t base,
uint64_t len, int node, MemoryAffinityFlags flags)
{
numamem->type = ACPI_SRAT_MEMORY;
numamem->length = sizeof(*numamem);
memset(numamem->proximity, 0, 4);
numamem->proximity[0] = node;
numamem->flags = cpu_to_le32(flags);
numamem->base_addr = cpu_to_le64(base);
numamem->range_length = cpu_to_le64(len);
}
static void
build_srat(GArray *table_data, GArray *linker,
AcpiCpuInfo *cpu, PcGuestInfo *guest_info)
{
AcpiSystemResourceAffinityTable *srat;
AcpiSratProcessorAffinity *core;
AcpiSratMemoryAffinity *numamem;
int i;
uint64_t curnode;
int srat_start, numa_start, slots;
uint64_t mem_len, mem_base, next_base;
PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
ram_addr_t hotplugabble_address_space_size =
object_property_get_int(OBJECT(pcms), PC_MACHINE_MEMHP_REGION_SIZE,
NULL);
srat_start = table_data->len;
srat = acpi_data_push(table_data, sizeof *srat);
srat->reserved1 = cpu_to_le32(1);
core = (void *)(srat + 1);
for (i = 0; i < guest_info->apic_id_limit; ++i) {
core = acpi_data_push(table_data, sizeof *core);
core->type = ACPI_SRAT_PROCESSOR;
core->length = sizeof(*core);
core->local_apic_id = i;
curnode = guest_info->node_cpu[i];
core->proximity_lo = curnode;
memset(core->proximity_hi, 0, 3);
core->local_sapic_eid = 0;
if (test_bit(i, cpu->found_cpus)) {
core->flags = cpu_to_le32(1);
} else {
core->flags = cpu_to_le32(0);
}
}
/* the memory map is a bit tricky, it contains at least one hole
* from 640k-1M and possibly another one from 3.5G-4G.
*/
next_base = 0;
numa_start = table_data->len;
numamem = acpi_data_push(table_data, sizeof *numamem);
acpi_build_srat_memory(numamem, 0, 640*1024, 0, MEM_AFFINITY_ENABLED);
next_base = 1024 * 1024;
for (i = 1; i < guest_info->numa_nodes + 1; ++i) {
mem_base = next_base;
mem_len = guest_info->node_mem[i - 1];
if (i == 1) {
mem_len -= 1024 * 1024;
}
next_base = mem_base + mem_len;
/* Cut out the ACPI_PCI hole */
if (mem_base <= guest_info->ram_size_below_4g &&
next_base > guest_info->ram_size_below_4g) {
mem_len -= next_base - guest_info->ram_size_below_4g;
if (mem_len > 0) {
numamem = acpi_data_push(table_data, sizeof *numamem);
acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1,
MEM_AFFINITY_ENABLED);
}
mem_base = 1ULL << 32;
mem_len = next_base - guest_info->ram_size_below_4g;
next_base += (1ULL << 32) - guest_info->ram_size_below_4g;
}
numamem = acpi_data_push(table_data, sizeof *numamem);
acpi_build_srat_memory(numamem, mem_base, mem_len, i - 1,
MEM_AFFINITY_ENABLED);
}
slots = (table_data->len - numa_start) / sizeof *numamem;
for (; slots < guest_info->numa_nodes + 2; slots++) {
numamem = acpi_data_push(table_data, sizeof *numamem);
acpi_build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
}
/*
* Entry is required for Windows to enable memory hotplug in OS.
* Memory devices may override proximity set by this entry,
* providing _PXM method if necessary.
*/
if (hotplugabble_address_space_size) {
numamem = acpi_data_push(table_data, sizeof *numamem);
acpi_build_srat_memory(numamem, pcms->hotplug_memory_base,
hotplugabble_address_space_size, 0,
MEM_AFFINITY_HOTPLUGGABLE |
MEM_AFFINITY_ENABLED);
}
build_header(linker, table_data,
(void *)(table_data->data + srat_start),
"SRAT",
table_data->len - srat_start, 1);
}
static void
build_mcfg_q35(GArray *table_data, GArray *linker, AcpiMcfgInfo *info)
{
AcpiTableMcfg *mcfg;
const char *sig;
int len = sizeof(*mcfg) + 1 * sizeof(mcfg->allocation[0]);
mcfg = acpi_data_push(table_data, len);
mcfg->allocation[0].address = cpu_to_le64(info->mcfg_base);
/* Only a single allocation so no need to play with segments */
mcfg->allocation[0].pci_segment = cpu_to_le16(0);
mcfg->allocation[0].start_bus_number = 0;
mcfg->allocation[0].end_bus_number = PCIE_MMCFG_BUS(info->mcfg_size - 1);
/* MCFG is used for ECAM which can be enabled or disabled by guest.
* To avoid table size changes (which create migration issues),
* always create the table even if there are no allocations,
* but set the signature to a reserved value in this case.
* ACPI spec requires OSPMs to ignore such tables.
*/
if (info->mcfg_base == PCIE_BASE_ADDR_UNMAPPED) {
/* Reserved signature: ignored by OSPM */
sig = "QEMU";
} else {
sig = "MCFG";
}
build_header(linker, table_data, (void *)mcfg, sig, len, 1);
}
static void
build_dmar_q35(GArray *table_data, GArray *linker)
{
int dmar_start = table_data->len;
AcpiTableDmar *dmar;
AcpiDmarHardwareUnit *drhd;
dmar = acpi_data_push(table_data, sizeof(*dmar));
dmar->host_address_width = VTD_HOST_ADDRESS_WIDTH - 1;
dmar->flags = 0; /* No intr_remap for now */
/* DMAR Remapping Hardware Unit Definition structure */
drhd = acpi_data_push(table_data, sizeof(*drhd));
drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT);
drhd->length = cpu_to_le16(sizeof(*drhd)); /* No device scope now */
drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL;
drhd->pci_segment = cpu_to_le16(0);
drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR);
build_header(linker, table_data, (void *)(table_data->data + dmar_start),
"DMAR", table_data->len - dmar_start, 1);
}
static void
build_dsdt(GArray *table_data, GArray *linker, AcpiMiscInfo *misc)
{
AcpiTableHeader *dsdt;
assert(misc->dsdt_code && misc->dsdt_size);
dsdt = acpi_data_push(table_data, misc->dsdt_size);
memcpy(dsdt, misc->dsdt_code, misc->dsdt_size);
memset(dsdt, 0, sizeof *dsdt);
build_header(linker, table_data, dsdt, "DSDT",
misc->dsdt_size, 1);
}
/* Build final rsdt table */
static void
build_rsdt(GArray *table_data, GArray *linker, GArray *table_offsets)
{
AcpiRsdtDescriptorRev1 *rsdt;
size_t rsdt_len;
int i;
rsdt_len = sizeof(*rsdt) + sizeof(uint32_t) * table_offsets->len;
rsdt = acpi_data_push(table_data, rsdt_len);
memcpy(rsdt->table_offset_entry, table_offsets->data,
sizeof(uint32_t) * table_offsets->len);
for (i = 0; i < table_offsets->len; ++i) {
/* rsdt->table_offset_entry to be filled by Guest linker */
bios_linker_loader_add_pointer(linker,
ACPI_BUILD_TABLE_FILE,
ACPI_BUILD_TABLE_FILE,
table_data, &rsdt->table_offset_entry[i],
sizeof(uint32_t));
}
build_header(linker, table_data,
(void *)rsdt, "RSDT", rsdt_len, 1);
}
static GArray *
build_rsdp(GArray *rsdp_table, GArray *linker, unsigned rsdt)
{
AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, 16,
true /* fseg memory */);
memcpy(&rsdp->signature, "RSD PTR ", 8);
memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6);
rsdp->rsdt_physical_address = cpu_to_le32(rsdt);
/* Address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
ACPI_BUILD_TABLE_FILE,
rsdp_table, &rsdp->rsdt_physical_address,
sizeof rsdp->rsdt_physical_address);
rsdp->checksum = 0;
/* Checksum to be filled by Guest linker */
bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
rsdp, rsdp, sizeof *rsdp, &rsdp->checksum);
return rsdp_table;
}
typedef
struct AcpiBuildTables {
GArray *table_data;
GArray *rsdp;
GArray *tcpalog;
GArray *linker;
} AcpiBuildTables;
static inline void acpi_build_tables_init(AcpiBuildTables *tables)
{
tables->rsdp = g_array_new(false, true /* clear */, 1);
tables->table_data = g_array_new(false, true /* clear */, 1);
tables->tcpalog = g_array_new(false, true /* clear */, 1);
tables->linker = bios_linker_loader_init();
}
static inline void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre)
{
void *linker_data = bios_linker_loader_cleanup(tables->linker);
g_free(linker_data);
g_array_free(tables->rsdp, mfre);
g_array_free(tables->table_data, true);
g_array_free(tables->tcpalog, mfre);
}
typedef
struct AcpiBuildState {
/* Copy of table in RAM (for patching). */
ram_addr_t table_ram;
uint32_t table_size;
/* Is table patched? */
uint8_t patched;
PcGuestInfo *guest_info;
} AcpiBuildState;
static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
{
Object *pci_host;
QObject *o;
bool ambiguous;
pci_host = object_resolve_path_type("", TYPE_PCI_HOST_BRIDGE, &ambiguous);
g_assert(!ambiguous);
g_assert(pci_host);
o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
if (!o) {
return false;
}
mcfg->mcfg_base = qint_get_int(qobject_to_qint(o));
qobject_decref(o);
o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
assert(o);
mcfg->mcfg_size = qint_get_int(qobject_to_qint(o));
qobject_decref(o);
return true;
}
static bool acpi_has_iommu(void)
{
bool ambiguous;
Object *intel_iommu;
intel_iommu = object_resolve_path_type("", TYPE_INTEL_IOMMU_DEVICE,
&ambiguous);
return intel_iommu && !ambiguous;
}
static
void acpi_build(PcGuestInfo *guest_info, AcpiBuildTables *tables)
{
GArray *table_offsets;
unsigned facs, ssdt, dsdt, rsdt;
AcpiCpuInfo cpu;
AcpiPmInfo pm;
AcpiMiscInfo misc;
AcpiMcfgInfo mcfg;
PcPciInfo pci;
uint8_t *u;
size_t aml_len = 0;
acpi_get_cpu_info(&cpu);
acpi_get_pm_info(&pm);
acpi_get_dsdt(&misc);
acpi_get_misc_info(&misc);
acpi_get_pci_info(&pci);
table_offsets = g_array_new(false, true /* clear */,
sizeof(uint32_t));
ACPI_BUILD_DPRINTF(3, "init ACPI tables\n");
bios_linker_loader_alloc(tables->linker, ACPI_BUILD_TABLE_FILE,
64 /* Ensure FACS is aligned */,
false /* high memory */);
/*
* FACS is pointed to by FADT.
* We place it first since it's the only table that has alignment
* requirements.
*/
facs = tables->table_data->len;
build_facs(tables->table_data, tables->linker, guest_info);
/* DSDT is pointed to by FADT */
dsdt = tables->table_data->len;
build_dsdt(tables->table_data, tables->linker, &misc);
/* Count the size of the DSDT and SSDT, we will need it for legacy
* sizing of ACPI tables.
*/
aml_len += tables->table_data->len - dsdt;
/* ACPI tables pointed to by RSDT */
acpi_add_table(table_offsets, tables->table_data);
build_fadt(tables->table_data, tables->linker, &pm, facs, dsdt);
ssdt = tables->table_data->len;
acpi_add_table(table_offsets, tables->table_data);
build_ssdt(tables->table_data, tables->linker, &cpu, &pm, &misc, &pci,
guest_info);
aml_len += tables->table_data->len - ssdt;
acpi_add_table(table_offsets, tables->table_data);
build_madt(tables->table_data, tables->linker, &cpu, guest_info);
if (misc.has_hpet) {
acpi_add_table(table_offsets, tables->table_data);
build_hpet(tables->table_data, tables->linker);
}
if (misc.has_tpm) {
acpi_add_table(table_offsets, tables->table_data);
build_tpm_tcpa(tables->table_data, tables->linker, tables->tcpalog);
acpi_add_table(table_offsets, tables->table_data);
build_tpm_ssdt(tables->table_data, tables->linker);
}
if (guest_info->numa_nodes) {
acpi_add_table(table_offsets, tables->table_data);
build_srat(tables->table_data, tables->linker, &cpu, guest_info);
}
if (acpi_get_mcfg(&mcfg)) {
acpi_add_table(table_offsets, tables->table_data);
build_mcfg_q35(tables->table_data, tables->linker, &mcfg);
}
if (acpi_has_iommu()) {
acpi_add_table(table_offsets, tables->table_data);
build_dmar_q35(tables->table_data, tables->linker);
}
/* Add tables supplied by user (if any) */
for (u = acpi_table_first(); u; u = acpi_table_next(u)) {
unsigned len = acpi_table_len(u);
acpi_add_table(table_offsets, tables->table_data);
g_array_append_vals(tables->table_data, u, len);
}
/* RSDT is pointed to by RSDP */
rsdt = tables->table_data->len;
build_rsdt(tables->table_data, tables->linker, table_offsets);
/* RSDP is in FSEG memory, so allocate it separately */
build_rsdp(tables->rsdp, tables->linker, rsdt);
/* We'll expose it all to Guest so we want to reduce
* chance of size changes.
* RSDP is small so it's easy to keep it immutable, no need to
* bother with alignment.
*
* We used to align the tables to 4k, but of course this would
* too simple to be enough. 4k turned out to be too small an
* alignment very soon, and in fact it is almost impossible to
* keep the table size stable for all (max_cpus, max_memory_slots)
* combinations. So the table size is always 64k for pc-i440fx-2.1
* and we give an error if the table grows beyond that limit.
*
* We still have the problem of migrating from "-M pc-i440fx-2.0". For
* that, we exploit the fact that QEMU 2.1 generates _smaller_ tables
* than 2.0 and we can always pad the smaller tables with zeros. We can
* then use the exact size of the 2.0 tables.
*
* All this is for PIIX4, since QEMU 2.0 didn't support Q35 migration.
*/
if (guest_info->legacy_acpi_table_size) {
/* Subtracting aml_len gives the size of fixed tables. Then add the
* size of the PIIX4 DSDT/SSDT in QEMU 2.0.
*/
int legacy_aml_len =
guest_info->legacy_acpi_table_size +
ACPI_BUILD_LEGACY_CPU_AML_SIZE * max_cpus;
int legacy_table_size =
ROUND_UP(tables->table_data->len - aml_len + legacy_aml_len,
ACPI_BUILD_ALIGN_SIZE);
if (tables->table_data->len > legacy_table_size) {
/* Should happen only with PCI bridges and -M pc-i440fx-2.0. */
error_report("Warning: migration may not work.");
}
g_array_set_size(tables->table_data, legacy_table_size);
} else {
/* Make sure we have a buffer in case we need to resize the tables. */
if (tables->table_data->len > ACPI_BUILD_TABLE_SIZE / 2) {
/* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */
error_report("Warning: ACPI tables are larger than 64k.");
error_report("Warning: migration may not work.");
error_report("Warning: please remove CPUs, NUMA nodes, "
"memory slots or PCI bridges.");
}
acpi_align_size(tables->table_data, ACPI_BUILD_TABLE_SIZE);
}
acpi_align_size(tables->linker, ACPI_BUILD_ALIGN_SIZE);
/* Cleanup memory that's no longer used. */
g_array_free(table_offsets, true);
}
static void acpi_build_update(void *build_opaque, uint32_t offset)
{
AcpiBuildState *build_state = build_opaque;
AcpiBuildTables tables;
/* No state to update or already patched? Nothing to do. */
if (!build_state || build_state->patched) {
return;
}
build_state->patched = 1;
acpi_build_tables_init(&tables);
acpi_build(build_state->guest_info, &tables);
assert(acpi_data_len(tables.table_data) == build_state->table_size);
memcpy(qemu_get_ram_ptr(build_state->table_ram), tables.table_data->data,
build_state->table_size);
cpu_physical_memory_set_dirty_range_nocode(build_state->table_ram,
build_state->table_size);
acpi_build_tables_cleanup(&tables, true);
}
static void acpi_build_reset(void *build_opaque)
{
AcpiBuildState *build_state = build_opaque;
build_state->patched = 0;
}
static ram_addr_t acpi_add_rom_blob(AcpiBuildState *build_state, GArray *blob,
const char *name)
{
return rom_add_blob(name, blob->data, acpi_data_len(blob), -1, name,
acpi_build_update, build_state);
}
static const VMStateDescription vmstate_acpi_build = {
.name = "acpi_build",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_UINT8(patched, AcpiBuildState),
VMSTATE_END_OF_LIST()
},
};
void acpi_setup(PcGuestInfo *guest_info)
{
AcpiBuildTables tables;
AcpiBuildState *build_state;
if (!guest_info->fw_cfg) {
ACPI_BUILD_DPRINTF(3, "No fw cfg. Bailing out.\n");
return;
}
if (!guest_info->has_acpi_build) {
ACPI_BUILD_DPRINTF(3, "ACPI build disabled. Bailing out.\n");
return;
}
if (!acpi_enabled) {
ACPI_BUILD_DPRINTF(3, "ACPI disabled. Bailing out.\n");
return;
}
build_state = g_malloc0(sizeof *build_state);
build_state->guest_info = guest_info;
acpi_set_pci_info();
acpi_build_tables_init(&tables);
acpi_build(build_state->guest_info, &tables);
/* Now expose it all to Guest */
build_state->table_ram = acpi_add_rom_blob(build_state, tables.table_data,
ACPI_BUILD_TABLE_FILE);
assert(build_state->table_ram != RAM_ADDR_MAX);
build_state->table_size = acpi_data_len(tables.table_data);
acpi_add_rom_blob(NULL, tables.linker, "etc/table-loader");
fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
tables.tcpalog->data, acpi_data_len(tables.tcpalog));
/*
* RSDP is small so it's easy to keep it immutable, no need to
* bother with ROM blobs.
*/
fw_cfg_add_file(guest_info->fw_cfg, ACPI_BUILD_RSDP_FILE,
tables.rsdp->data, acpi_data_len(tables.rsdp));
qemu_register_reset(acpi_build_reset, build_state);
acpi_build_reset(build_state);
vmstate_register(NULL, 0, &vmstate_acpi_build, build_state);
/* Cleanup tables but don't free the memory: we track it
* in build_state.
*/
acpi_build_tables_cleanup(&tables, false);
}
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