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qemu/hw/i386/acpi-build.c
Igor Mammedov dbb6da8ba7 pc: acpi: revert back to 1 SRAT entry for hotpluggable area 
Commit
  10efd7e108 "pc: acpi: fix memory hotplug regression by reducing stub SRAT entry size"
attemped to fix hotplug regression introduced by
  848a1cc1e "hw/acpi-build: build SRAT memory affinity structures for DIMM devices"

fixed issue for Windows/3.0+ linux kernels, however it regressed 2.6 based
kernels (RHEL6) to the point where guest might crash at boot.
Reason is that 2.6 kernel discards SRAT table due too small last entry
which down the road leads to crashes. Hack I've tried in 10efd7e108 is also
not ACPI spec compliant according to which whole possible RAM should be
described in SRAT. Revert 10efd7e108 to fix regression for 2.6 based kernels.

With 10efd7e108 reverted, I've also tried splitting SRAT table statically
in different ways %/node and %/slot but Windows still fails to online
2nd pc-dimm hot-plugged into node 0 (as described in 10efd7e108) and
sometimes even coldplugged pc-dimms where affected with static SRAT
partitioning.
The only known so far way where Windows stays happy is when we have 1
SRAT entry in the last node covering all hotplug area.

Revert 848a1cc1e until we come up with a way to avoid regression
on Windows with hotplug area split in several entries.
Tested this with 2.6/3.0 based kernels (RHEL6/7) and WS20[08/12/12R2/16]).

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2018-09-07 17:05:18 -04:00

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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 "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/qmp/qnum.h"
#include "acpi-build.h"
#include "qemu-common.h"
#include "qemu/bitmap.h"
#include "qemu/error-report.h"
#include "hw/pci/pci.h"
#include "qom/cpu.h"
#include "target/i386/cpu.h"
#include "hw/misc/pvpanic.h"
#include "hw/timer/hpet.h"
#include "hw/acpi/acpi-defs.h"
#include "hw/acpi/acpi.h"
#include "hw/acpi/cpu.h"
#include "hw/nvram/fw_cfg.h"
#include "hw/acpi/bios-linker-loader.h"
#include "hw/loader.h"
#include "hw/isa/isa.h"
#include "hw/block/fdc.h"
#include "hw/acpi/memory_hotplug.h"
#include "sysemu/tpm.h"
#include "hw/acpi/tpm.h"
#include "hw/acpi/vmgenid.h"
#include "sysemu/tpm_backend.h"
#include "hw/timer/mc146818rtc_regs.h"
#include "hw/mem/memory-device.h"
#include "sysemu/numa.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/x86-iommu.h"
#include "hw/acpi/aml-build.h"
#include "qom/qom-qobject.h"
#include "hw/i386/amd_iommu.h"
#include "hw/i386/intel_iommu.h"
#include "hw/acpi/ipmi.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
/* #define DEBUG_ACPI_BUILD */
#ifdef DEBUG_ACPI_BUILD
#define ACPI_BUILD_DPRINTF(fmt, ...) \
do {printf("ACPI_BUILD: " fmt, ## __VA_ARGS__); } while (0)
#else
#define ACPI_BUILD_DPRINTF(fmt, ...)
#endif
/* Default IOAPIC ID */
#define ACPI_BUILD_IOAPIC_ID 0x0
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;
AcpiFadtData fadt;
uint16_t cpu_hp_io_base;
uint16_t pcihp_io_base;
uint16_t pcihp_io_len;
} AcpiPmInfo;
typedef struct AcpiMiscInfo {
bool is_piix4;
bool has_hpet;
TPMVersion tpm_version;
const unsigned char *dsdt_code;
unsigned dsdt_size;
uint16_t pvpanic_port;
uint16_t applesmc_io_base;
} AcpiMiscInfo;
typedef struct AcpiBuildPciBusHotplugState {
GArray *device_table;
GArray *notify_table;
struct AcpiBuildPciBusHotplugState *parent;
bool pcihp_bridge_en;
} AcpiBuildPciBusHotplugState;
static void init_common_fadt_data(Object *o, AcpiFadtData *data)
{
uint32_t io = object_property_get_uint(o, ACPI_PM_PROP_PM_IO_BASE, NULL);
AmlAddressSpace as = AML_AS_SYSTEM_IO;
AcpiFadtData fadt = {
.rev = 3,
.flags =
(1 << ACPI_FADT_F_WBINVD) |
(1 << ACPI_FADT_F_PROC_C1) |
(1 << ACPI_FADT_F_SLP_BUTTON) |
(1 << ACPI_FADT_F_RTC_S4) |
(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
*/
((max_cpus > 8) ? (1 << ACPI_FADT_F_FORCE_APIC_CLUSTER_MODEL) : 0),
.int_model = 1 /* Multiple APIC */,
.rtc_century = RTC_CENTURY,
.plvl2_lat = 0xfff /* C2 state not supported */,
.plvl3_lat = 0xfff /* C3 state not supported */,
.smi_cmd = ACPI_PORT_SMI_CMD,
.sci_int = object_property_get_uint(o, ACPI_PM_PROP_SCI_INT, NULL),
.acpi_enable_cmd =
object_property_get_uint(o, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL),
.acpi_disable_cmd =
object_property_get_uint(o, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL),
.pm1a_evt = { .space_id = as, .bit_width = 4 * 8, .address = io },
.pm1a_cnt = { .space_id = as, .bit_width = 2 * 8,
.address = io + 0x04 },
.pm_tmr = { .space_id = as, .bit_width = 4 * 8, .address = io + 0x08 },
.gpe0_blk = { .space_id = as, .bit_width =
object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK_LEN, NULL) * 8,
.address = object_property_get_uint(o, ACPI_PM_PROP_GPE0_BLK, NULL)
},
};
*data = fadt;
}
static void acpi_get_pm_info(AcpiPmInfo *pm)
{
Object *piix = piix4_pm_find();
Object *lpc = ich9_lpc_find();
Object *obj = piix ? piix : lpc;
QObject *o;
pm->cpu_hp_io_base = 0;
pm->pcihp_io_base = 0;
pm->pcihp_io_len = 0;
init_common_fadt_data(obj, &pm->fadt);
if (piix) {
/* w2k requires FADT(rev1) or it won't boot, keep PC compatible */
pm->fadt.rev = 1;
pm->cpu_hp_io_base = PIIX4_CPU_HOTPLUG_IO_BASE;
pm->pcihp_io_base =
object_property_get_uint(obj, ACPI_PCIHP_IO_BASE_PROP, NULL);
pm->pcihp_io_len =
object_property_get_uint(obj, ACPI_PCIHP_IO_LEN_PROP, NULL);
}
if (lpc) {
struct AcpiGenericAddress r = { .space_id = AML_AS_SYSTEM_IO,
.bit_width = 8, .address = ICH9_RST_CNT_IOPORT };
pm->fadt.reset_reg = r;
pm->fadt.reset_val = 0xf;
pm->fadt.flags |= 1 << ACPI_FADT_F_RESET_REG_SUP;
pm->cpu_hp_io_base = ICH9_CPU_HOTPLUG_IO_BASE;
}
assert(obj);
/* The above need not be conditional on machine type because the reset port
* happens to be the same on PIIX (pc) and ICH9 (q35). */
QEMU_BUILD_BUG_ON(ICH9_RST_CNT_IOPORT != RCR_IOPORT);
/* Fill in optional s3/s4 related properties */
o = object_property_get_qobject(obj, ACPI_PM_PROP_S3_DISABLED, NULL);
if (o) {
pm->s3_disabled = qnum_get_uint(qobject_to(QNum, o));
} else {
pm->s3_disabled = false;
}
qobject_unref(o);
o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_DISABLED, NULL);
if (o) {
pm->s4_disabled = qnum_get_uint(qobject_to(QNum, o));
} else {
pm->s4_disabled = false;
}
qobject_unref(o);
o = object_property_get_qobject(obj, ACPI_PM_PROP_S4_VAL, NULL);
if (o) {
pm->s4_val = qnum_get_uint(qobject_to(QNum, o));
} else {
pm->s4_val = false;
}
qobject_unref(o);
pm->pcihp_bridge_en =
object_property_get_bool(obj, "acpi-pci-hotplug-with-bridge-support",
NULL);
}
static void acpi_get_misc_info(AcpiMiscInfo *info)
{
Object *piix = piix4_pm_find();
Object *lpc = ich9_lpc_find();
assert(!!piix != !!lpc);
if (piix) {
info->is_piix4 = true;
}
if (lpc) {
info->is_piix4 = false;
}
info->has_hpet = hpet_find();
info->tpm_version = tpm_get_version(tpm_find());
info->pvpanic_port = pvpanic_port();
info->applesmc_io_base = applesmc_port();
}
/*
* Because of the PXB hosts we cannot simply query TYPE_PCI_HOST_BRIDGE.
* On i386 arch we only have two pci hosts, so we can look only for them.
*/
static Object *acpi_get_i386_pci_host(void)
{
PCIHostState *host;
host = OBJECT_CHECK(PCIHostState,
object_resolve_path("/machine/i440fx", NULL),
TYPE_PCI_HOST_BRIDGE);
if (!host) {
host = OBJECT_CHECK(PCIHostState,
object_resolve_path("/machine/q35", NULL),
TYPE_PCI_HOST_BRIDGE);
}
return OBJECT(host);
}
static void acpi_get_pci_holes(Range *hole, Range *hole64)
{
Object *pci_host;
pci_host = acpi_get_i386_pci_host();
g_assert(pci_host);
range_set_bounds1(hole,
object_property_get_uint(pci_host,
PCI_HOST_PROP_PCI_HOLE_START,
NULL),
object_property_get_uint(pci_host,
PCI_HOST_PROP_PCI_HOLE_END,
NULL));
range_set_bounds1(hole64,
object_property_get_uint(pci_host,
PCI_HOST_PROP_PCI_HOLE64_START,
NULL),
object_property_get_uint(pci_host,
PCI_HOST_PROP_PCI_HOLE64_END,
NULL));
}
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));
}
/* FACS */
static void
build_facs(GArray *table_data, BIOSLinker *linker)
{
AcpiFacsDescriptorRev1 *facs = acpi_data_push(table_data, sizeof *facs);
memcpy(&facs->signature, "FACS", 4);
facs->length = cpu_to_le32(sizeof(*facs));
}
void pc_madt_cpu_entry(AcpiDeviceIf *adev, int uid,
const CPUArchIdList *apic_ids, GArray *entry)
{
uint32_t apic_id = apic_ids->cpus[uid].arch_id;
/* ACPI spec says that LAPIC entry for non present
* CPU may be omitted from MADT or it must be marked
* as disabled. However omitting non present CPU from
* MADT breaks hotplug on linux. So possible CPUs
* should be put in MADT but kept disabled.
*/
if (apic_id < 255) {
AcpiMadtProcessorApic *apic = acpi_data_push(entry, sizeof *apic);
apic->type = ACPI_APIC_PROCESSOR;
apic->length = sizeof(*apic);
apic->processor_id = uid;
apic->local_apic_id = apic_id;
if (apic_ids->cpus[uid].cpu != NULL) {
apic->flags = cpu_to_le32(1);
} else {
apic->flags = cpu_to_le32(0);
}
} else {
AcpiMadtProcessorX2Apic *apic = acpi_data_push(entry, sizeof *apic);
apic->type = ACPI_APIC_LOCAL_X2APIC;
apic->length = sizeof(*apic);
apic->uid = cpu_to_le32(uid);
apic->x2apic_id = cpu_to_le32(apic_id);
if (apic_ids->cpus[uid].cpu != NULL) {
apic->flags = cpu_to_le32(1);
} else {
apic->flags = cpu_to_le32(0);
}
}
}
static void
build_madt(GArray *table_data, BIOSLinker *linker, PCMachineState *pcms)
{
MachineClass *mc = MACHINE_GET_CLASS(pcms);
const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(MACHINE(pcms));
int madt_start = table_data->len;
AcpiDeviceIfClass *adevc = ACPI_DEVICE_IF_GET_CLASS(pcms->acpi_dev);
AcpiDeviceIf *adev = ACPI_DEVICE_IF(pcms->acpi_dev);
bool x2apic_mode = false;
AcpiMultipleApicTable *madt;
AcpiMadtIoApic *io_apic;
AcpiMadtIntsrcovr *intsrcovr;
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 < apic_ids->len; i++) {
adevc->madt_cpu(adev, i, apic_ids, table_data);
if (apic_ids->cpus[i].arch_id > 254) {
x2apic_mode = true;
}
}
io_apic = acpi_data_push(table_data, sizeof *io_apic);
io_apic->type = ACPI_APIC_IO;
io_apic->length = sizeof(*io_apic);
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 (pcms->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 */
}
if (x2apic_mode) {
AcpiMadtLocalX2ApicNmi *local_nmi;
local_nmi = acpi_data_push(table_data, sizeof *local_nmi);
local_nmi->type = ACPI_APIC_LOCAL_X2APIC_NMI;
local_nmi->length = sizeof(*local_nmi);
local_nmi->uid = 0xFFFFFFFF; /* all processors */
local_nmi->flags = cpu_to_le16(0);
local_nmi->lint = 1; /* ACPI_LINT1 */
} else {
AcpiMadtLocalNmi *local_nmi;
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, NULL, NULL);
}
static void build_append_pcihp_notify_entry(Aml *method, int slot)
{
Aml *if_ctx;
int32_t devfn = PCI_DEVFN(slot, 0);
if_ctx = aml_if(aml_and(aml_arg(0), aml_int(0x1U << slot), NULL));
aml_append(if_ctx, aml_notify(aml_name("S%.02X", devfn), aml_arg(1)));
aml_append(method, if_ctx);
}
static void build_append_pci_bus_devices(Aml *parent_scope, PCIBus *bus,
bool pcihp_bridge_en)
{
Aml *dev, *notify_method = NULL, *method;
QObject *bsel;
PCIBus *sec;
int i;
bsel = object_property_get_qobject(OBJECT(bus), ACPI_PCIHP_PROP_BSEL, NULL);
if (bsel) {
uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel));
aml_append(parent_scope, aml_name_decl("BSEL", aml_int(bsel_val)));
notify_method = aml_method("DVNT", 2, AML_NOTSERIALIZED);
}
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 hotplug_enabled_dev;
bool bridge_in_acpi;
if (!pdev) {
if (bsel) { /* add hotplug slots for non present devices */
dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
aml_append(method,
aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
);
aml_append(dev, method);
aml_append(parent_scope, dev);
build_append_pcihp_notify_entry(notify_method, slot);
}
continue;
}
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.
* Hotplugged bridges *are* hot-pluggable.
*/
bridge_in_acpi = pc->is_bridge && pcihp_bridge_en &&
!DEVICE(pdev)->hotplugged;
hotplug_enabled_dev = bsel && dc->hotpluggable && !bridge_in_acpi;
if (pc->class_id == PCI_CLASS_BRIDGE_ISA) {
continue;
}
/* start to compose PCI slot descriptor */
dev = aml_device("S%.02X", PCI_DEVFN(slot, 0));
aml_append(dev, aml_name_decl("_ADR", aml_int(slot << 16)));
if (pc->class_id == PCI_CLASS_DISPLAY_VGA) {
/* add VGA specific AML methods */
int s3d;
if (object_dynamic_cast(OBJECT(pdev), "qxl-vga")) {
s3d = 3;
} else {
s3d = 0;
}
method = aml_method("_S1D", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_int(0)));
aml_append(dev, method);
method = aml_method("_S2D", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_int(0)));
aml_append(dev, method);
method = aml_method("_S3D", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_int(s3d)));
aml_append(dev, method);
} else if (hotplug_enabled_dev) {
/* add _SUN/_EJ0 to make slot hotpluggable */
aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
aml_append(method,
aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
);
aml_append(dev, method);
if (bsel) {
build_append_pcihp_notify_entry(notify_method, slot);
}
} else if (bridge_in_acpi) {
/*
* device is coldplugged bridge,
* add child device descriptions into its scope
*/
PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev));
build_append_pci_bus_devices(dev, sec_bus, pcihp_bridge_en);
}
/* slot descriptor has been composed, add it into parent context */
aml_append(parent_scope, dev);
}
if (bsel) {
aml_append(parent_scope, notify_method);
}
/* Append PCNT method to notify about events on local and child buses.
* Add unconditionally for root since DSDT expects it.
*/
method = aml_method("PCNT", 0, AML_NOTSERIALIZED);
/* If bus supports hotplug select it and notify about local events */
if (bsel) {
uint64_t bsel_val = qnum_get_uint(qobject_to(QNum, bsel));
aml_append(method, aml_store(aml_int(bsel_val), aml_name("BNUM")));
aml_append(method,
aml_call2("DVNT", aml_name("PCIU"), aml_int(1) /* Device Check */)
);
aml_append(method,
aml_call2("DVNT", aml_name("PCID"), aml_int(3)/* Eject Request */)
);
}
/* Notify about child bus events in any case */
if (pcihp_bridge_en) {
QLIST_FOREACH(sec, &bus->child, sibling) {
int32_t devfn = sec->parent_dev->devfn;
if (pci_bus_is_root(sec) || pci_bus_is_express(sec)) {
continue;
}
aml_append(method, aml_name("^S%.02X.PCNT", devfn));
}
}
aml_append(parent_scope, method);
qobject_unref(bsel);
}
/**
* build_prt_entry:
* @link_name: link name for PCI route entry
*
* build AML package containing a PCI route entry for @link_name
*/
static Aml *build_prt_entry(const char *link_name)
{
Aml *a_zero = aml_int(0);
Aml *pkg = aml_package(4);
aml_append(pkg, a_zero);
aml_append(pkg, a_zero);
aml_append(pkg, aml_name("%s", link_name));
aml_append(pkg, a_zero);
return pkg;
}
/*
* initialize_route - Initialize the interrupt routing rule
* through a specific LINK:
* if (lnk_idx == idx)
* route using link 'link_name'
*/
static Aml *initialize_route(Aml *route, const char *link_name,
Aml *lnk_idx, int idx)
{
Aml *if_ctx = aml_if(aml_equal(lnk_idx, aml_int(idx)));
Aml *pkg = build_prt_entry(link_name);
aml_append(if_ctx, aml_store(pkg, route));
return if_ctx;
}
/*
* build_prt - Define interrupt rounting rules
*
* Returns an array of 128 routes, one for each device,
* based on device location.
* The main goal is to equaly distribute the interrupts
* over the 4 existing ACPI links (works only for i440fx).
* The hash function is (slot + pin) & 3 -> "LNK[D|A|B|C]".
*
*/
static Aml *build_prt(bool is_pci0_prt)
{
Aml *method, *while_ctx, *pin, *res;
method = aml_method("_PRT", 0, AML_NOTSERIALIZED);
res = aml_local(0);
pin = aml_local(1);
aml_append(method, aml_store(aml_package(128), res));
aml_append(method, aml_store(aml_int(0), pin));
/* while (pin < 128) */
while_ctx = aml_while(aml_lless(pin, aml_int(128)));
{
Aml *slot = aml_local(2);
Aml *lnk_idx = aml_local(3);
Aml *route = aml_local(4);
/* slot = pin >> 2 */
aml_append(while_ctx,
aml_store(aml_shiftright(pin, aml_int(2), NULL), slot));
/* lnk_idx = (slot + pin) & 3 */
aml_append(while_ctx,
aml_store(aml_and(aml_add(pin, slot, NULL), aml_int(3), NULL),
lnk_idx));
/* route[2] = "LNK[D|A|B|C]", selection based on pin % 3 */
aml_append(while_ctx, initialize_route(route, "LNKD", lnk_idx, 0));
if (is_pci0_prt) {
Aml *if_device_1, *if_pin_4, *else_pin_4;
/* device 1 is the power-management device, needs SCI */
if_device_1 = aml_if(aml_equal(lnk_idx, aml_int(1)));
{
if_pin_4 = aml_if(aml_equal(pin, aml_int(4)));
{
aml_append(if_pin_4,
aml_store(build_prt_entry("LNKS"), route));
}
aml_append(if_device_1, if_pin_4);
else_pin_4 = aml_else();
{
aml_append(else_pin_4,
aml_store(build_prt_entry("LNKA"), route));
}
aml_append(if_device_1, else_pin_4);
}
aml_append(while_ctx, if_device_1);
} else {
aml_append(while_ctx, initialize_route(route, "LNKA", lnk_idx, 1));
}
aml_append(while_ctx, initialize_route(route, "LNKB", lnk_idx, 2));
aml_append(while_ctx, initialize_route(route, "LNKC", lnk_idx, 3));
/* route[0] = 0x[slot]FFFF */
aml_append(while_ctx,
aml_store(aml_or(aml_shiftleft(slot, aml_int(16)), aml_int(0xFFFF),
NULL),
aml_index(route, aml_int(0))));
/* route[1] = pin & 3 */
aml_append(while_ctx,
aml_store(aml_and(pin, aml_int(3), NULL),
aml_index(route, aml_int(1))));
/* res[pin] = route */
aml_append(while_ctx, aml_store(route, aml_index(res, pin)));
/* pin++ */
aml_append(while_ctx, aml_increment(pin));
}
aml_append(method, while_ctx);
/* return res*/
aml_append(method, aml_return(res));
return method;
}
typedef struct CrsRangeEntry {
uint64_t base;
uint64_t limit;
} CrsRangeEntry;
static void crs_range_insert(GPtrArray *ranges, uint64_t base, uint64_t limit)
{
CrsRangeEntry *entry;
entry = g_malloc(sizeof(*entry));
entry->base = base;
entry->limit = limit;
g_ptr_array_add(ranges, entry);
}
static void crs_range_free(gpointer data)
{
CrsRangeEntry *entry = (CrsRangeEntry *)data;
g_free(entry);
}
typedef struct CrsRangeSet {
GPtrArray *io_ranges;
GPtrArray *mem_ranges;
GPtrArray *mem_64bit_ranges;
} CrsRangeSet;
static void crs_range_set_init(CrsRangeSet *range_set)
{
range_set->io_ranges = g_ptr_array_new_with_free_func(crs_range_free);
range_set->mem_ranges = g_ptr_array_new_with_free_func(crs_range_free);
range_set->mem_64bit_ranges =
g_ptr_array_new_with_free_func(crs_range_free);
}
static void crs_range_set_free(CrsRangeSet *range_set)
{
g_ptr_array_free(range_set->io_ranges, true);
g_ptr_array_free(range_set->mem_ranges, true);
g_ptr_array_free(range_set->mem_64bit_ranges, true);
}
static gint crs_range_compare(gconstpointer a, gconstpointer b)
{
CrsRangeEntry *entry_a = *(CrsRangeEntry **)a;
CrsRangeEntry *entry_b = *(CrsRangeEntry **)b;
return (int64_t)entry_a->base - (int64_t)entry_b->base;
}
/*
* crs_replace_with_free_ranges - given the 'used' ranges within [start - end]
* interval, computes the 'free' ranges from the same interval.
* Example: If the input array is { [a1 - a2],[b1 - b2] }, the function
* will return { [base - a1], [a2 - b1], [b2 - limit] }.
*/
static void crs_replace_with_free_ranges(GPtrArray *ranges,
uint64_t start, uint64_t end)
{
GPtrArray *free_ranges = g_ptr_array_new();
uint64_t free_base = start;
int i;
g_ptr_array_sort(ranges, crs_range_compare);
for (i = 0; i < ranges->len; i++) {
CrsRangeEntry *used = g_ptr_array_index(ranges, i);
if (free_base < used->base) {
crs_range_insert(free_ranges, free_base, used->base - 1);
}
free_base = used->limit + 1;
}
if (free_base < end) {
crs_range_insert(free_ranges, free_base, end);
}
g_ptr_array_set_size(ranges, 0);
for (i = 0; i < free_ranges->len; i++) {
g_ptr_array_add(ranges, g_ptr_array_index(free_ranges, i));
}
g_ptr_array_free(free_ranges, true);
}
/*
* crs_range_merge - merges adjacent ranges in the given array.
* Array elements are deleted and replaced with the merged ranges.
*/
static void crs_range_merge(GPtrArray *range)
{
GPtrArray *tmp = g_ptr_array_new_with_free_func(crs_range_free);
CrsRangeEntry *entry;
uint64_t range_base, range_limit;
int i;
if (!range->len) {
return;
}
g_ptr_array_sort(range, crs_range_compare);
entry = g_ptr_array_index(range, 0);
range_base = entry->base;
range_limit = entry->limit;
for (i = 1; i < range->len; i++) {
entry = g_ptr_array_index(range, i);
if (entry->base - 1 == range_limit) {
range_limit = entry->limit;
} else {
crs_range_insert(tmp, range_base, range_limit);
range_base = entry->base;
range_limit = entry->limit;
}
}
crs_range_insert(tmp, range_base, range_limit);
g_ptr_array_set_size(range, 0);
for (i = 0; i < tmp->len; i++) {
entry = g_ptr_array_index(tmp, i);
crs_range_insert(range, entry->base, entry->limit);
}
g_ptr_array_free(tmp, true);
}
static Aml *build_crs(PCIHostState *host, CrsRangeSet *range_set)
{
Aml *crs = aml_resource_template();
CrsRangeSet temp_range_set;
CrsRangeEntry *entry;
uint8_t max_bus = pci_bus_num(host->bus);
uint8_t type;
int devfn;
int i;
crs_range_set_init(&temp_range_set);
for (devfn = 0; devfn < ARRAY_SIZE(host->bus->devices); devfn++) {
uint64_t range_base, range_limit;
PCIDevice *dev = host->bus->devices[devfn];
if (!dev) {
continue;
}
for (i = 0; i < PCI_NUM_REGIONS; i++) {
PCIIORegion *r = &dev->io_regions[i];
range_base = r->addr;
range_limit = r->addr + r->size - 1;
/*
* Work-around for old bioses
* that do not support multiple root buses
*/
if (!range_base || range_base > range_limit) {
continue;
}
if (r->type & PCI_BASE_ADDRESS_SPACE_IO) {
crs_range_insert(temp_range_set.io_ranges,
range_base, range_limit);
} else { /* "memory" */
crs_range_insert(temp_range_set.mem_ranges,
range_base, range_limit);
}
}
type = dev->config[PCI_HEADER_TYPE] & ~PCI_HEADER_TYPE_MULTI_FUNCTION;
if (type == PCI_HEADER_TYPE_BRIDGE) {
uint8_t subordinate = dev->config[PCI_SUBORDINATE_BUS];
if (subordinate > max_bus) {
max_bus = subordinate;
}
range_base = pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_IO);
range_limit = pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_IO);
/*
* Work-around for old bioses
* that do not support multiple root buses
*/
if (range_base && range_base <= range_limit) {
crs_range_insert(temp_range_set.io_ranges,
range_base, range_limit);
}
range_base =
pci_bridge_get_base(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
range_limit =
pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_SPACE_MEMORY);
/*
* Work-around for old bioses
* that do not support multiple root buses
*/
if (range_base && range_base <= range_limit) {
uint64_t length = range_limit - range_base + 1;
if (range_limit <= UINT32_MAX && length <= UINT32_MAX) {
crs_range_insert(temp_range_set.mem_ranges,
range_base, range_limit);
} else {
crs_range_insert(temp_range_set.mem_64bit_ranges,
range_base, range_limit);
}
}
range_base =
pci_bridge_get_base(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
range_limit =
pci_bridge_get_limit(dev, PCI_BASE_ADDRESS_MEM_PREFETCH);
/*
* Work-around for old bioses
* that do not support multiple root buses
*/
if (range_base && range_base <= range_limit) {
uint64_t length = range_limit - range_base + 1;
if (range_limit <= UINT32_MAX && length <= UINT32_MAX) {
crs_range_insert(temp_range_set.mem_ranges,
range_base, range_limit);
} else {
crs_range_insert(temp_range_set.mem_64bit_ranges,
range_base, range_limit);
}
}
}
}
crs_range_merge(temp_range_set.io_ranges);
for (i = 0; i < temp_range_set.io_ranges->len; i++) {
entry = g_ptr_array_index(temp_range_set.io_ranges, i);
aml_append(crs,
aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
AML_POS_DECODE, AML_ENTIRE_RANGE,
0, entry->base, entry->limit, 0,
entry->limit - entry->base + 1));
crs_range_insert(range_set->io_ranges, entry->base, entry->limit);
}
crs_range_merge(temp_range_set.mem_ranges);
for (i = 0; i < temp_range_set.mem_ranges->len; i++) {
entry = g_ptr_array_index(temp_range_set.mem_ranges, i);
aml_append(crs,
aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED,
AML_MAX_FIXED, AML_NON_CACHEABLE,
AML_READ_WRITE,
0, entry->base, entry->limit, 0,
entry->limit - entry->base + 1));
crs_range_insert(range_set->mem_ranges, entry->base, entry->limit);
}
crs_range_merge(temp_range_set.mem_64bit_ranges);
for (i = 0; i < temp_range_set.mem_64bit_ranges->len; i++) {
entry = g_ptr_array_index(temp_range_set.mem_64bit_ranges, i);
aml_append(crs,
aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED,
AML_MAX_FIXED, AML_NON_CACHEABLE,
AML_READ_WRITE,
0, entry->base, entry->limit, 0,
entry->limit - entry->base + 1));
crs_range_insert(range_set->mem_64bit_ranges,
entry->base, entry->limit);
}
crs_range_set_free(&temp_range_set);
aml_append(crs,
aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
0,
pci_bus_num(host->bus),
max_bus,
0,
max_bus - pci_bus_num(host->bus) + 1));
return crs;
}
static void build_hpet_aml(Aml *table)
{
Aml *crs;
Aml *field;
Aml *method;
Aml *if_ctx;
Aml *scope = aml_scope("_SB");
Aml *dev = aml_device("HPET");
Aml *zero = aml_int(0);
Aml *id = aml_local(0);
Aml *period = aml_local(1);
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0103")));
aml_append(dev, aml_name_decl("_UID", zero));
aml_append(dev,
aml_operation_region("HPTM", AML_SYSTEM_MEMORY, aml_int(HPET_BASE),
HPET_LEN));
field = aml_field("HPTM", AML_DWORD_ACC, AML_LOCK, AML_PRESERVE);
aml_append(field, aml_named_field("VEND", 32));
aml_append(field, aml_named_field("PRD", 32));
aml_append(dev, field);
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_store(aml_name("VEND"), id));
aml_append(method, aml_store(aml_name("PRD"), period));
aml_append(method, aml_shiftright(id, aml_int(16), id));
if_ctx = aml_if(aml_lor(aml_equal(id, zero),
aml_equal(id, aml_int(0xffff))));
{
aml_append(if_ctx, aml_return(zero));
}
aml_append(method, if_ctx);
if_ctx = aml_if(aml_lor(aml_equal(period, zero),
aml_lgreater(period, aml_int(100000000))));
{
aml_append(if_ctx, aml_return(zero));
}
aml_append(method, if_ctx);
aml_append(method, aml_return(aml_int(0x0F)));
aml_append(dev, method);
crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(HPET_BASE, HPET_LEN, AML_READ_ONLY));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
aml_append(table, scope);
}
static Aml *build_fdinfo_aml(int idx, FloppyDriveType type)
{
Aml *dev, *fdi;
uint8_t maxc, maxh, maxs;
isa_fdc_get_drive_max_chs(type, &maxc, &maxh, &maxs);
dev = aml_device("FLP%c", 'A' + idx);
aml_append(dev, aml_name_decl("_ADR", aml_int(idx)));
fdi = aml_package(16);
aml_append(fdi, aml_int(idx)); /* Drive Number */
aml_append(fdi,
aml_int(cmos_get_fd_drive_type(type))); /* Device Type */
/*
* the values below are the limits of the drive, and are thus independent
* of the inserted media
*/
aml_append(fdi, aml_int(maxc)); /* Maximum Cylinder Number */
aml_append(fdi, aml_int(maxs)); /* Maximum Sector Number */
aml_append(fdi, aml_int(maxh)); /* Maximum Head Number */
/*
* SeaBIOS returns the below values for int 0x13 func 0x08 regardless of
* the drive type, so shall we
*/
aml_append(fdi, aml_int(0xAF)); /* disk_specify_1 */
aml_append(fdi, aml_int(0x02)); /* disk_specify_2 */
aml_append(fdi, aml_int(0x25)); /* disk_motor_wait */
aml_append(fdi, aml_int(0x02)); /* disk_sector_siz */
aml_append(fdi, aml_int(0x12)); /* disk_eot */
aml_append(fdi, aml_int(0x1B)); /* disk_rw_gap */
aml_append(fdi, aml_int(0xFF)); /* disk_dtl */
aml_append(fdi, aml_int(0x6C)); /* disk_formt_gap */
aml_append(fdi, aml_int(0xF6)); /* disk_fill */
aml_append(fdi, aml_int(0x0F)); /* disk_head_sttl */
aml_append(fdi, aml_int(0x08)); /* disk_motor_strt */
aml_append(dev, aml_name_decl("_FDI", fdi));
return dev;
}
static Aml *build_fdc_device_aml(ISADevice *fdc)
{
int i;
Aml *dev;
Aml *crs;
#define ACPI_FDE_MAX_FD 4
uint32_t fde_buf[5] = {
0, 0, 0, 0, /* presence of floppy drives #0 - #3 */
cpu_to_le32(2) /* tape presence (2 == never present) */
};
dev = aml_device("FDC0");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0700")));
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, 0x03F2, 0x03F2, 0x00, 0x04));
aml_append(crs, aml_io(AML_DECODE16, 0x03F7, 0x03F7, 0x00, 0x01));
aml_append(crs, aml_irq_no_flags(6));
aml_append(crs,
aml_dma(AML_COMPATIBILITY, AML_NOTBUSMASTER, AML_TRANSFER8, 2));
aml_append(dev, aml_name_decl("_CRS", crs));
for (i = 0; i < MIN(MAX_FD, ACPI_FDE_MAX_FD); i++) {
FloppyDriveType type = isa_fdc_get_drive_type(fdc, i);
if (type < FLOPPY_DRIVE_TYPE_NONE) {
fde_buf[i] = cpu_to_le32(1); /* drive present */
aml_append(dev, build_fdinfo_aml(i, type));
}
}
aml_append(dev, aml_name_decl("_FDE",
aml_buffer(sizeof(fde_buf), (uint8_t *)fde_buf)));
return dev;
}
static Aml *build_rtc_device_aml(void)
{
Aml *dev;
Aml *crs;
dev = aml_device("RTC");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0B00")));
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, 0x0070, 0x0070, 0x10, 0x02));
aml_append(crs, aml_irq_no_flags(8));
aml_append(crs, aml_io(AML_DECODE16, 0x0072, 0x0072, 0x02, 0x06));
aml_append(dev, aml_name_decl("_CRS", crs));
return dev;
}
static Aml *build_kbd_device_aml(void)
{
Aml *dev;
Aml *crs;
Aml *method;
dev = aml_device("KBD");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0303")));
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_int(0x0f)));
aml_append(dev, method);
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, 0x0060, 0x0060, 0x01, 0x01));
aml_append(crs, aml_io(AML_DECODE16, 0x0064, 0x0064, 0x01, 0x01));
aml_append(crs, aml_irq_no_flags(1));
aml_append(dev, aml_name_decl("_CRS", crs));
return dev;
}
static Aml *build_mouse_device_aml(void)
{
Aml *dev;
Aml *crs;
Aml *method;
dev = aml_device("MOU");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0F13")));
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_int(0x0f)));
aml_append(dev, method);
crs = aml_resource_template();
aml_append(crs, aml_irq_no_flags(12));
aml_append(dev, aml_name_decl("_CRS", crs));
return dev;
}
static Aml *build_lpt_device_aml(void)
{
Aml *dev;
Aml *crs;
Aml *method;
Aml *if_ctx;
Aml *else_ctx;
Aml *zero = aml_int(0);
Aml *is_present = aml_local(0);
dev = aml_device("LPT");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0400")));
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_store(aml_name("LPEN"), is_present));
if_ctx = aml_if(aml_equal(is_present, zero));
{
aml_append(if_ctx, aml_return(aml_int(0x00)));
}
aml_append(method, if_ctx);
else_ctx = aml_else();
{
aml_append(else_ctx, aml_return(aml_int(0x0f)));
}
aml_append(method, else_ctx);
aml_append(dev, method);
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, 0x0378, 0x0378, 0x08, 0x08));
aml_append(crs, aml_irq_no_flags(7));
aml_append(dev, aml_name_decl("_CRS", crs));
return dev;
}
static Aml *build_com_device_aml(uint8_t uid)
{
Aml *dev;
Aml *crs;
Aml *method;
Aml *if_ctx;
Aml *else_ctx;
Aml *zero = aml_int(0);
Aml *is_present = aml_local(0);
const char *enabled_field = "CAEN";
uint8_t irq = 4;
uint16_t io_port = 0x03F8;
assert(uid == 1 || uid == 2);
if (uid == 2) {
enabled_field = "CBEN";
irq = 3;
io_port = 0x02F8;
}
dev = aml_device("COM%d", uid);
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0501")));
aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_store(aml_name("%s", enabled_field), is_present));
if_ctx = aml_if(aml_equal(is_present, zero));
{
aml_append(if_ctx, aml_return(aml_int(0x00)));
}
aml_append(method, if_ctx);
else_ctx = aml_else();
{
aml_append(else_ctx, aml_return(aml_int(0x0f)));
}
aml_append(method, else_ctx);
aml_append(dev, method);
crs = aml_resource_template();
aml_append(crs, aml_io(AML_DECODE16, io_port, io_port, 0x00, 0x08));
aml_append(crs, aml_irq_no_flags(irq));
aml_append(dev, aml_name_decl("_CRS", crs));
return dev;
}
static void build_isa_devices_aml(Aml *table)
{
ISADevice *fdc = pc_find_fdc0();
bool ambiguous;
Aml *scope = aml_scope("_SB.PCI0.ISA");
Object *obj = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous);
aml_append(scope, build_rtc_device_aml());
aml_append(scope, build_kbd_device_aml());
aml_append(scope, build_mouse_device_aml());
if (fdc) {
aml_append(scope, build_fdc_device_aml(fdc));
}
aml_append(scope, build_lpt_device_aml());
aml_append(scope, build_com_device_aml(1));
aml_append(scope, build_com_device_aml(2));
if (ambiguous) {
error_report("Multiple ISA busses, unable to define IPMI ACPI data");
} else if (!obj) {
error_report("No ISA bus, unable to define IPMI ACPI data");
} else {
build_acpi_ipmi_devices(scope, BUS(obj));
}
aml_append(table, scope);
}
static void build_dbg_aml(Aml *table)
{
Aml *field;
Aml *method;
Aml *while_ctx;
Aml *scope = aml_scope("\\");
Aml *buf = aml_local(0);
Aml *len = aml_local(1);
Aml *idx = aml_local(2);
aml_append(scope,
aml_operation_region("DBG", AML_SYSTEM_IO, aml_int(0x0402), 0x01));
field = aml_field("DBG", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("DBGB", 8));
aml_append(scope, field);
method = aml_method("DBUG", 1, AML_NOTSERIALIZED);
aml_append(method, aml_to_hexstring(aml_arg(0), buf));
aml_append(method, aml_to_buffer(buf, buf));
aml_append(method, aml_subtract(aml_sizeof(buf), aml_int(1), len));
aml_append(method, aml_store(aml_int(0), idx));
while_ctx = aml_while(aml_lless(idx, len));
aml_append(while_ctx,
aml_store(aml_derefof(aml_index(buf, idx)), aml_name("DBGB")));
aml_append(while_ctx, aml_increment(idx));
aml_append(method, while_ctx);
aml_append(method, aml_store(aml_int(0x0A), aml_name("DBGB")));
aml_append(scope, method);
aml_append(table, scope);
}
static Aml *build_link_dev(const char *name, uint8_t uid, Aml *reg)
{
Aml *dev;
Aml *crs;
Aml *method;
uint32_t irqs[] = {5, 10, 11};
dev = aml_device("%s", name);
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
crs = aml_resource_template();
aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
AML_SHARED, irqs, ARRAY_SIZE(irqs)));
aml_append(dev, aml_name_decl("_PRS", crs));
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_call1("IQST", reg)));
aml_append(dev, method);
method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
aml_append(method, aml_or(reg, aml_int(0x80), reg));
aml_append(dev, method);
method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_call1("IQCR", reg)));
aml_append(dev, method);
method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
aml_append(method, aml_create_dword_field(aml_arg(0), aml_int(5), "PRRI"));
aml_append(method, aml_store(aml_name("PRRI"), reg));
aml_append(dev, method);
return dev;
}
static Aml *build_gsi_link_dev(const char *name, uint8_t uid, uint8_t gsi)
{
Aml *dev;
Aml *crs;
Aml *method;
uint32_t irqs;
dev = aml_device("%s", name);
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
aml_append(dev, aml_name_decl("_UID", aml_int(uid)));
crs = aml_resource_template();
irqs = gsi;
aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
AML_SHARED, &irqs, 1));
aml_append(dev, aml_name_decl("_PRS", crs));
aml_append(dev, aml_name_decl("_CRS", crs));
/*
* _DIS can be no-op because the interrupt cannot be disabled.
*/
method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
aml_append(dev, method);
method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
aml_append(dev, method);
return dev;
}
/* _CRS method - get current settings */
static Aml *build_iqcr_method(bool is_piix4)
{
Aml *if_ctx;
uint32_t irqs;
Aml *method = aml_method("IQCR", 1, AML_SERIALIZED);
Aml *crs = aml_resource_template();
irqs = 0;
aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL,
AML_ACTIVE_HIGH, AML_SHARED, &irqs, 1));
aml_append(method, aml_name_decl("PRR0", crs));
aml_append(method,
aml_create_dword_field(aml_name("PRR0"), aml_int(5), "PRRI"));
if (is_piix4) {
if_ctx = aml_if(aml_lless(aml_arg(0), aml_int(0x80)));
aml_append(if_ctx, aml_store(aml_arg(0), aml_name("PRRI")));
aml_append(method, if_ctx);
} else {
aml_append(method,
aml_store(aml_and(aml_arg(0), aml_int(0xF), NULL),
aml_name("PRRI")));
}
aml_append(method, aml_return(aml_name("PRR0")));
return method;
}
/* _STA method - get status */
static Aml *build_irq_status_method(void)
{
Aml *if_ctx;
Aml *method = aml_method("IQST", 1, AML_NOTSERIALIZED);
if_ctx = aml_if(aml_and(aml_int(0x80), aml_arg(0), NULL));
aml_append(if_ctx, aml_return(aml_int(0x09)));
aml_append(method, if_ctx);
aml_append(method, aml_return(aml_int(0x0B)));
return method;
}
static void build_piix4_pci0_int(Aml *table)
{
Aml *dev;
Aml *crs;
Aml *field;
Aml *method;
uint32_t irqs;
Aml *sb_scope = aml_scope("_SB");
Aml *pci0_scope = aml_scope("PCI0");
aml_append(pci0_scope, build_prt(true));
aml_append(sb_scope, pci0_scope);
field = aml_field("PCI0.ISA.P40C", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("PRQ0", 8));
aml_append(field, aml_named_field("PRQ1", 8));
aml_append(field, aml_named_field("PRQ2", 8));
aml_append(field, aml_named_field("PRQ3", 8));
aml_append(sb_scope, field);
aml_append(sb_scope, build_irq_status_method());
aml_append(sb_scope, build_iqcr_method(true));
aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQ0")));
aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQ1")));
aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQ2")));
aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQ3")));
dev = aml_device("LNKS");
{
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C0F")));
aml_append(dev, aml_name_decl("_UID", aml_int(4)));
crs = aml_resource_template();
irqs = 9;
aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL,
AML_ACTIVE_HIGH, AML_SHARED,
&irqs, 1));
aml_append(dev, aml_name_decl("_PRS", crs));
/* The SCI cannot be disabled and is always attached to GSI 9,
* so these are no-ops. We only need this link to override the
* polarity to active high and match the content of the MADT.
*/
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_int(0x0b)));
aml_append(dev, method);
method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
aml_append(dev, method);
method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_name("_PRS")));
aml_append(dev, method);
method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
aml_append(dev, method);
}
aml_append(sb_scope, dev);
aml_append(table, sb_scope);
}
static void append_q35_prt_entry(Aml *ctx, uint32_t nr, const char *name)
{
int i;
int head;
Aml *pkg;
char base = name[3] < 'E' ? 'A' : 'E';
char *s = g_strdup(name);
Aml *a_nr = aml_int((nr << 16) | 0xffff);
assert(strlen(s) == 4);
head = name[3] - base;
for (i = 0; i < 4; i++) {
if (head + i > 3) {
head = i * -1;
}
s[3] = base + head + i;
pkg = aml_package(4);
aml_append(pkg, a_nr);
aml_append(pkg, aml_int(i));
aml_append(pkg, aml_name("%s", s));
aml_append(pkg, aml_int(0));
aml_append(ctx, pkg);
}
g_free(s);
}
static Aml *build_q35_routing_table(const char *str)
{
int i;
Aml *pkg;
char *name = g_strdup_printf("%s ", str);
pkg = aml_package(128);
for (i = 0; i < 0x18; i++) {
name[3] = 'E' + (i & 0x3);
append_q35_prt_entry(pkg, i, name);
}
name[3] = 'E';
append_q35_prt_entry(pkg, 0x18, name);
/* INTA -> PIRQA for slot 25 - 31, see the default value of D<N>IR */
for (i = 0x0019; i < 0x1e; i++) {
name[3] = 'A';
append_q35_prt_entry(pkg, i, name);
}
/* PCIe->PCI bridge. use PIRQ[E-H] */
name[3] = 'E';
append_q35_prt_entry(pkg, 0x1e, name);
name[3] = 'A';
append_q35_prt_entry(pkg, 0x1f, name);
g_free(name);
return pkg;
}
static void build_q35_pci0_int(Aml *table)
{
Aml *field;
Aml *method;
Aml *sb_scope = aml_scope("_SB");
Aml *pci0_scope = aml_scope("PCI0");
/* Zero => PIC mode, One => APIC Mode */
aml_append(table, aml_name_decl("PICF", aml_int(0)));
method = aml_method("_PIC", 1, AML_NOTSERIALIZED);
{
aml_append(method, aml_store(aml_arg(0), aml_name("PICF")));
}
aml_append(table, method);
aml_append(pci0_scope,
aml_name_decl("PRTP", build_q35_routing_table("LNK")));
aml_append(pci0_scope,
aml_name_decl("PRTA", build_q35_routing_table("GSI")));
method = aml_method("_PRT", 0, AML_NOTSERIALIZED);
{
Aml *if_ctx;
Aml *else_ctx;
/* PCI IRQ routing table, example from ACPI 2.0a specification,
section 6.2.8.1 */
/* Note: we provide the same info as the PCI routing
table of the Bochs BIOS */
if_ctx = aml_if(aml_equal(aml_name("PICF"), aml_int(0)));
aml_append(if_ctx, aml_return(aml_name("PRTP")));
aml_append(method, if_ctx);
else_ctx = aml_else();
aml_append(else_ctx, aml_return(aml_name("PRTA")));
aml_append(method, else_ctx);
}
aml_append(pci0_scope, method);
aml_append(sb_scope, pci0_scope);
field = aml_field("PCI0.ISA.PIRQ", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("PRQA", 8));
aml_append(field, aml_named_field("PRQB", 8));
aml_append(field, aml_named_field("PRQC", 8));
aml_append(field, aml_named_field("PRQD", 8));
aml_append(field, aml_reserved_field(0x20));
aml_append(field, aml_named_field("PRQE", 8));
aml_append(field, aml_named_field("PRQF", 8));
aml_append(field, aml_named_field("PRQG", 8));
aml_append(field, aml_named_field("PRQH", 8));
aml_append(sb_scope, field);
aml_append(sb_scope, build_irq_status_method());
aml_append(sb_scope, build_iqcr_method(false));
aml_append(sb_scope, build_link_dev("LNKA", 0, aml_name("PRQA")));
aml_append(sb_scope, build_link_dev("LNKB", 1, aml_name("PRQB")));
aml_append(sb_scope, build_link_dev("LNKC", 2, aml_name("PRQC")));
aml_append(sb_scope, build_link_dev("LNKD", 3, aml_name("PRQD")));
aml_append(sb_scope, build_link_dev("LNKE", 4, aml_name("PRQE")));
aml_append(sb_scope, build_link_dev("LNKF", 5, aml_name("PRQF")));
aml_append(sb_scope, build_link_dev("LNKG", 6, aml_name("PRQG")));
aml_append(sb_scope, build_link_dev("LNKH", 7, aml_name("PRQH")));
aml_append(sb_scope, build_gsi_link_dev("GSIA", 0x10, 0x10));
aml_append(sb_scope, build_gsi_link_dev("GSIB", 0x11, 0x11));
aml_append(sb_scope, build_gsi_link_dev("GSIC", 0x12, 0x12));
aml_append(sb_scope, build_gsi_link_dev("GSID", 0x13, 0x13));
aml_append(sb_scope, build_gsi_link_dev("GSIE", 0x14, 0x14));
aml_append(sb_scope, build_gsi_link_dev("GSIF", 0x15, 0x15));
aml_append(sb_scope, build_gsi_link_dev("GSIG", 0x16, 0x16));
aml_append(sb_scope, build_gsi_link_dev("GSIH", 0x17, 0x17));
aml_append(table, sb_scope);
}
static void build_q35_isa_bridge(Aml *table)
{
Aml *dev;
Aml *scope;
Aml *field;
scope = aml_scope("_SB.PCI0");
dev = aml_device("ISA");
aml_append(dev, aml_name_decl("_ADR", aml_int(0x001F0000)));
/* ICH9 PCI to ISA irq remapping */
aml_append(dev, aml_operation_region("PIRQ", AML_PCI_CONFIG,
aml_int(0x60), 0x0C));
aml_append(dev, aml_operation_region("LPCD", AML_PCI_CONFIG,
aml_int(0x80), 0x02));
field = aml_field("LPCD", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("COMA", 3));
aml_append(field, aml_reserved_field(1));
aml_append(field, aml_named_field("COMB", 3));
aml_append(field, aml_reserved_field(1));
aml_append(field, aml_named_field("LPTD", 2));
aml_append(dev, field);
aml_append(dev, aml_operation_region("LPCE", AML_PCI_CONFIG,
aml_int(0x82), 0x02));
/* enable bits */
field = aml_field("LPCE", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("CAEN", 1));
aml_append(field, aml_named_field("CBEN", 1));
aml_append(field, aml_named_field("LPEN", 1));
aml_append(dev, field);
aml_append(scope, dev);
aml_append(table, scope);
}
static void build_piix4_pm(Aml *table)
{
Aml *dev;
Aml *scope;
scope = aml_scope("_SB.PCI0");
dev = aml_device("PX13");
aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010003)));
aml_append(dev, aml_operation_region("P13C", AML_PCI_CONFIG,
aml_int(0x00), 0xff));
aml_append(scope, dev);
aml_append(table, scope);
}
static void build_piix4_isa_bridge(Aml *table)
{
Aml *dev;
Aml *scope;
Aml *field;
scope = aml_scope("_SB.PCI0");
dev = aml_device("ISA");
aml_append(dev, aml_name_decl("_ADR", aml_int(0x00010000)));
/* PIIX PCI to ISA irq remapping */
aml_append(dev, aml_operation_region("P40C", AML_PCI_CONFIG,
aml_int(0x60), 0x04));
/* enable bits */
field = aml_field("^PX13.P13C", AML_ANY_ACC, AML_NOLOCK, AML_PRESERVE);
/* Offset(0x5f),, 7, */
aml_append(field, aml_reserved_field(0x2f8));
aml_append(field, aml_reserved_field(7));
aml_append(field, aml_named_field("LPEN", 1));
/* Offset(0x67),, 3, */
aml_append(field, aml_reserved_field(0x38));
aml_append(field, aml_reserved_field(3));
aml_append(field, aml_named_field("CAEN", 1));
aml_append(field, aml_reserved_field(3));
aml_append(field, aml_named_field("CBEN", 1));
aml_append(dev, field);
aml_append(scope, dev);
aml_append(table, scope);
}
static void build_piix4_pci_hotplug(Aml *table)
{
Aml *scope;
Aml *field;
Aml *method;
scope = aml_scope("_SB.PCI0");
aml_append(scope,
aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(0xae00), 0x08));
field = aml_field("PCST", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
aml_append(field, aml_named_field("PCIU", 32));
aml_append(field, aml_named_field("PCID", 32));
aml_append(scope, field);
aml_append(scope,
aml_operation_region("SEJ", AML_SYSTEM_IO, aml_int(0xae08), 0x04));
field = aml_field("SEJ", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
aml_append(field, aml_named_field("B0EJ", 32));
aml_append(scope, field);
aml_append(scope,
aml_operation_region("BNMR", AML_SYSTEM_IO, aml_int(0xae10), 0x04));
field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
aml_append(field, aml_named_field("BNUM", 32));
aml_append(scope, field);
aml_append(scope, aml_mutex("BLCK", 0));
method = aml_method("PCEJ", 2, AML_NOTSERIALIZED);
aml_append(method, aml_acquire(aml_name("BLCK"), 0xFFFF));
aml_append(method, aml_store(aml_arg(0), aml_name("BNUM")));
aml_append(method,
aml_store(aml_shiftleft(aml_int(1), aml_arg(1)), aml_name("B0EJ")));
aml_append(method, aml_release(aml_name("BLCK")));
aml_append(method, aml_return(aml_int(0)));
aml_append(scope, method);
aml_append(table, scope);
}
static Aml *build_q35_osc_method(void)
{
Aml *if_ctx;
Aml *if_ctx2;
Aml *else_ctx;
Aml *method;
Aml *a_cwd1 = aml_name("CDW1");
Aml *a_ctrl = aml_local(0);
method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
aml_append(method, aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
if_ctx = aml_if(aml_equal(
aml_arg(0), aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766")));
aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
aml_append(if_ctx, aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
aml_append(if_ctx, aml_store(aml_name("CDW3"), a_ctrl));
/*
* Always allow native PME, AER (no dependencies)
* Allow SHPC (PCI bridges can have SHPC controller)
*/
aml_append(if_ctx, aml_and(a_ctrl, aml_int(0x1F), a_ctrl));
if_ctx2 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(1))));
/* Unknown revision */
aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x08), a_cwd1));
aml_append(if_ctx, if_ctx2);
if_ctx2 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), a_ctrl)));
/* Capabilities bits were masked */
aml_append(if_ctx2, aml_or(a_cwd1, aml_int(0x10), a_cwd1));
aml_append(if_ctx, if_ctx2);
/* Update DWORD3 in the buffer */
aml_append(if_ctx, aml_store(a_ctrl, aml_name("CDW3")));
aml_append(method, if_ctx);
else_ctx = aml_else();
/* Unrecognized UUID */
aml_append(else_ctx, aml_or(a_cwd1, aml_int(4), a_cwd1));
aml_append(method, else_ctx);
aml_append(method, aml_return(aml_arg(3)));
return method;
}
static void
build_dsdt(GArray *table_data, BIOSLinker *linker,
AcpiPmInfo *pm, AcpiMiscInfo *misc,
Range *pci_hole, Range *pci_hole64, MachineState *machine)
{
CrsRangeEntry *entry;
Aml *dsdt, *sb_scope, *scope, *dev, *method, *field, *pkg, *crs;
CrsRangeSet crs_range_set;
PCMachineState *pcms = PC_MACHINE(machine);
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(machine);
uint32_t nr_mem = machine->ram_slots;
int root_bus_limit = 0xFF;
PCIBus *bus = NULL;
int i;
dsdt = init_aml_allocator();
/* Reserve space for header */
acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
build_dbg_aml(dsdt);
if (misc->is_piix4) {
sb_scope = aml_scope("_SB");
dev = aml_device("PCI0");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
aml_append(dev, aml_name_decl("_UID", aml_int(1)));
aml_append(sb_scope, dev);
aml_append(dsdt, sb_scope);
build_hpet_aml(dsdt);
build_piix4_pm(dsdt);
build_piix4_isa_bridge(dsdt);
build_isa_devices_aml(dsdt);
build_piix4_pci_hotplug(dsdt);
build_piix4_pci0_int(dsdt);
} else {
sb_scope = aml_scope("_SB");
dev = aml_device("PCI0");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
aml_append(dev, aml_name_decl("_UID", aml_int(1)));
aml_append(dev, build_q35_osc_method());
aml_append(sb_scope, dev);
aml_append(dsdt, sb_scope);
build_hpet_aml(dsdt);
build_q35_isa_bridge(dsdt);
build_isa_devices_aml(dsdt);
build_q35_pci0_int(dsdt);
}
if (pcmc->legacy_cpu_hotplug) {
build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base);
} else {
CPUHotplugFeatures opts = {
.apci_1_compatible = true, .has_legacy_cphp = true
};
build_cpus_aml(dsdt, machine, opts, pm->cpu_hp_io_base,
"\\_SB.PCI0", "\\_GPE._E02");
}
build_memory_hotplug_aml(dsdt, nr_mem, "\\_SB.PCI0", "\\_GPE._E03");
scope = aml_scope("_GPE");
{
aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006")));
if (misc->is_piix4) {
method = aml_method("_E01", 0, AML_NOTSERIALIZED);
aml_append(method,
aml_acquire(aml_name("\\_SB.PCI0.BLCK"), 0xFFFF));
aml_append(method, aml_call0("\\_SB.PCI0.PCNT"));
aml_append(method, aml_release(aml_name("\\_SB.PCI0.BLCK")));
aml_append(scope, method);
}
if (pcms->acpi_nvdimm_state.is_enabled) {
method = aml_method("_E04", 0, AML_NOTSERIALIZED);
aml_append(method, aml_notify(aml_name("\\_SB.NVDR"),
aml_int(0x80)));
aml_append(scope, method);
}
}
aml_append(dsdt, scope);
crs_range_set_init(&crs_range_set);
bus = PC_MACHINE(machine)->bus;
if (bus) {
QLIST_FOREACH(bus, &bus->child, sibling) {
uint8_t bus_num = pci_bus_num(bus);
uint8_t numa_node = pci_bus_numa_node(bus);
/* look only for expander root buses */
if (!pci_bus_is_root(bus)) {
continue;
}
if (bus_num < root_bus_limit) {
root_bus_limit = bus_num - 1;
}
scope = aml_scope("\\_SB");
dev = aml_device("PC%.02X", bus_num);
aml_append(dev, aml_name_decl("_UID", aml_int(bus_num)));
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num)));
if (pci_bus_is_express(bus)) {
aml_append(dev, build_q35_osc_method());
}
if (numa_node != NUMA_NODE_UNASSIGNED) {
aml_append(dev, aml_name_decl("_PXM", aml_int(numa_node)));
}
aml_append(dev, build_prt(false));
crs = build_crs(PCI_HOST_BRIDGE(BUS(bus)->parent), &crs_range_set);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
aml_append(dsdt, scope);
}
}
scope = aml_scope("\\_SB.PCI0");
/* build PCI0._CRS */
crs = aml_resource_template();
aml_append(crs,
aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
0x0000, 0x0, root_bus_limit,
0x0000, root_bus_limit + 1));
aml_append(crs, aml_io(AML_DECODE16, 0x0CF8, 0x0CF8, 0x01, 0x08));
aml_append(crs,
aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
AML_POS_DECODE, AML_ENTIRE_RANGE,
0x0000, 0x0000, 0x0CF7, 0x0000, 0x0CF8));
crs_replace_with_free_ranges(crs_range_set.io_ranges, 0x0D00, 0xFFFF);
for (i = 0; i < crs_range_set.io_ranges->len; i++) {
entry = g_ptr_array_index(crs_range_set.io_ranges, i);
aml_append(crs,
aml_word_io(AML_MIN_FIXED, AML_MAX_FIXED,
AML_POS_DECODE, AML_ENTIRE_RANGE,
0x0000, entry->base, entry->limit,
0x0000, entry->limit - entry->base + 1));
}
aml_append(crs,
aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
AML_CACHEABLE, AML_READ_WRITE,
0, 0x000A0000, 0x000BFFFF, 0, 0x00020000));
crs_replace_with_free_ranges(crs_range_set.mem_ranges,
range_lob(pci_hole),
range_upb(pci_hole));
for (i = 0; i < crs_range_set.mem_ranges->len; i++) {
entry = g_ptr_array_index(crs_range_set.mem_ranges, i);
aml_append(crs,
aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
AML_NON_CACHEABLE, AML_READ_WRITE,
0, entry->base, entry->limit,
0, entry->limit - entry->base + 1));
}
if (!range_is_empty(pci_hole64)) {
crs_replace_with_free_ranges(crs_range_set.mem_64bit_ranges,
range_lob(pci_hole64),
range_upb(pci_hole64));
for (i = 0; i < crs_range_set.mem_64bit_ranges->len; i++) {
entry = g_ptr_array_index(crs_range_set.mem_64bit_ranges, i);
aml_append(crs,
aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED,
AML_MAX_FIXED,
AML_CACHEABLE, AML_READ_WRITE,
0, entry->base, entry->limit,
0, entry->limit - entry->base + 1));
}
}
if (TPM_IS_TIS(tpm_find())) {
aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
}
aml_append(scope, aml_name_decl("_CRS", crs));
/* reserve GPE0 block resources */
dev = aml_device("GPE0");
aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
aml_append(dev, aml_name_decl("_UID", aml_string("GPE0 resources")));
/* device present, functioning, decoding, not shown in UI */
aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
crs = aml_resource_template();
aml_append(crs,
aml_io(
AML_DECODE16,
pm->fadt.gpe0_blk.address,
pm->fadt.gpe0_blk.address,
1,
pm->fadt.gpe0_blk.bit_width / 8)
);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
crs_range_set_free(&crs_range_set);
/* reserve PCIHP resources */
if (pm->pcihp_io_len) {
dev = aml_device("PHPR");
aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A06")));
aml_append(dev,
aml_name_decl("_UID", aml_string("PCI Hotplug resources")));
/* device present, functioning, decoding, not shown in UI */
aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
crs = aml_resource_template();
aml_append(crs,
aml_io(AML_DECODE16, pm->pcihp_io_base, pm->pcihp_io_base, 1,
pm->pcihp_io_len)
);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
aml_append(dsdt, scope);
/* create S3_ / S4_ / S5_ packages if necessary */
scope = aml_scope("\\");
if (!pm->s3_disabled) {
pkg = aml_package(4);
aml_append(pkg, aml_int(1)); /* PM1a_CNT.SLP_TYP */
aml_append(pkg, aml_int(1)); /* PM1b_CNT.SLP_TYP, FIXME: not impl. */
aml_append(pkg, aml_int(0)); /* reserved */
aml_append(pkg, aml_int(0)); /* reserved */
aml_append(scope, aml_name_decl("_S3", pkg));
}
if (!pm->s4_disabled) {
pkg = aml_package(4);
aml_append(pkg, aml_int(pm->s4_val)); /* PM1a_CNT.SLP_TYP */
/* PM1b_CNT.SLP_TYP, FIXME: not impl. */
aml_append(pkg, aml_int(pm->s4_val));
aml_append(pkg, aml_int(0)); /* reserved */
aml_append(pkg, aml_int(0)); /* reserved */
aml_append(scope, aml_name_decl("_S4", pkg));
}
pkg = aml_package(4);
aml_append(pkg, aml_int(0)); /* PM1a_CNT.SLP_TYP */
aml_append(pkg, aml_int(0)); /* PM1b_CNT.SLP_TYP not impl. */
aml_append(pkg, aml_int(0)); /* reserved */
aml_append(pkg, aml_int(0)); /* reserved */
aml_append(scope, aml_name_decl("_S5", pkg));
aml_append(dsdt, scope);
/* create fw_cfg node, unconditionally */
{
/* when using port i/o, the 8-bit data register *always* overlaps
* with half of the 16-bit control register. Hence, the total size
* of the i/o region used is FW_CFG_CTL_SIZE; when using DMA, the
* DMA control register is located at FW_CFG_DMA_IO_BASE + 4 */
uint8_t io_size = object_property_get_bool(OBJECT(pcms->fw_cfg),
"dma_enabled", NULL) ?
ROUND_UP(FW_CFG_CTL_SIZE, 4) + sizeof(dma_addr_t) :
FW_CFG_CTL_SIZE;
scope = aml_scope("\\_SB.PCI0");
dev = aml_device("FWCF");
aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002")));
/* device present, functioning, decoding, not shown in UI */
aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
crs = aml_resource_template();
aml_append(crs,
aml_io(AML_DECODE16, FW_CFG_IO_BASE, FW_CFG_IO_BASE, 0x01, io_size)
);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
aml_append(dsdt, scope);
}
if (misc->applesmc_io_base) {
scope = aml_scope("\\_SB.PCI0.ISA");
dev = aml_device("SMC");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("APP0001")));
/* device present, functioning, decoding, not shown in UI */
aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
crs = aml_resource_template();
aml_append(crs,
aml_io(AML_DECODE16, misc->applesmc_io_base, misc->applesmc_io_base,
0x01, APPLESMC_MAX_DATA_LENGTH)
);
aml_append(crs, aml_irq_no_flags(6));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
aml_append(dsdt, scope);
}
if (misc->pvpanic_port) {
scope = aml_scope("\\_SB.PCI0.ISA");
dev = aml_device("PEVT");
aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0001")));
crs = aml_resource_template();
aml_append(crs,
aml_io(AML_DECODE16, misc->pvpanic_port, misc->pvpanic_port, 1, 1)
);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(dev, aml_operation_region("PEOR", AML_SYSTEM_IO,
aml_int(misc->pvpanic_port), 1));
field = aml_field("PEOR", AML_BYTE_ACC, AML_NOLOCK, AML_PRESERVE);
aml_append(field, aml_named_field("PEPT", 8));
aml_append(dev, field);
/* device present, functioning, decoding, shown in UI */
aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
method = aml_method("RDPT", 0, AML_NOTSERIALIZED);
aml_append(method, aml_store(aml_name("PEPT"), aml_local(0)));
aml_append(method, aml_return(aml_local(0)));
aml_append(dev, method);
method = aml_method("WRPT", 1, AML_NOTSERIALIZED);
aml_append(method, aml_store(aml_arg(0), aml_name("PEPT")));
aml_append(dev, method);
aml_append(scope, dev);
aml_append(dsdt, scope);
}
sb_scope = aml_scope("\\_SB");
{
Object *pci_host;
PCIBus *bus = NULL;
pci_host = acpi_get_i386_pci_host();
if (pci_host) {
bus = PCI_HOST_BRIDGE(pci_host)->bus;
}
if (bus) {
Aml *scope = aml_scope("PCI0");
/* Scan all PCI buses. Generate tables to support hotplug. */
build_append_pci_bus_devices(scope, bus, pm->pcihp_bridge_en);
if (TPM_IS_TIS(tpm_find())) {
dev = aml_device("ISA.TPM");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C31")));
aml_append(dev, aml_name_decl("_STA", aml_int(0xF)));
crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
/*
FIXME: TPM_TIS_IRQ=5 conflicts with PNP0C0F irqs,
Rewrite to take IRQ from TPM device model and
fix default IRQ value there to use some unused IRQ
*/
/* aml_append(crs, aml_irq_no_flags(TPM_TIS_IRQ)); */
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
aml_append(sb_scope, scope);
}
}
if (TPM_IS_CRB(tpm_find())) {
dev = aml_device("TPM");
aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101")));
crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(TPM_CRB_ADDR_BASE,
TPM_CRB_ADDR_SIZE, AML_READ_WRITE));
aml_append(dev, aml_name_decl("_CRS", crs));
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_int(0x0f)));
aml_append(dev, method);
aml_append(sb_scope, dev);
}
aml_append(dsdt, sb_scope);
/* copy AML table into ACPI tables blob and patch header there */
g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
build_header(linker, table_data,
(void *)(table_data->data + table_data->len - dsdt->buf->len),
"DSDT", dsdt->buf->len, 1, NULL, NULL);
free_aml_allocator();
}
static void
build_hpet(GArray *table_data, BIOSLinker *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, NULL, NULL);
}
static void
build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog)
{
Acpi20Tcpa *tcpa = acpi_data_push(table_data, sizeof *tcpa);
unsigned log_addr_size = sizeof(tcpa->log_area_start_address);
unsigned log_addr_offset =
(char *)&tcpa->log_area_start_address - table_data->data;
tcpa->platform_class = cpu_to_le16(TPM_TCPA_ACPI_CLASS_CLIENT);
tcpa->log_area_minimum_length = cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE);
acpi_data_push(tcpalog, le32_to_cpu(tcpa->log_area_minimum_length));
bios_linker_loader_alloc(linker, ACPI_BUILD_TPMLOG_FILE, tcpalog, 1,
false /* high memory */);
/* log area start address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker,
ACPI_BUILD_TABLE_FILE, log_addr_offset, log_addr_size,
ACPI_BUILD_TPMLOG_FILE, 0);
build_header(linker, table_data,
(void *)tcpa, "TCPA", sizeof(*tcpa), 2, NULL, NULL);
}
static void
build_tpm2(GArray *table_data, BIOSLinker *linker, GArray *tcpalog)
{
Acpi20TPM2 *tpm2_ptr = acpi_data_push(table_data, sizeof *tpm2_ptr);
unsigned log_addr_size = sizeof(tpm2_ptr->log_area_start_address);
unsigned log_addr_offset =
(char *)&tpm2_ptr->log_area_start_address - table_data->data;
tpm2_ptr->platform_class = cpu_to_le16(TPM2_ACPI_CLASS_CLIENT);
if (TPM_IS_TIS(tpm_find())) {
tpm2_ptr->control_area_address = cpu_to_le64(0);
tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_MMIO);
} else if (TPM_IS_CRB(tpm_find())) {
tpm2_ptr->control_area_address = cpu_to_le64(TPM_CRB_ADDR_CTRL);
tpm2_ptr->start_method = cpu_to_le32(TPM2_START_METHOD_CRB);
} else {
g_warn_if_reached();
}
tpm2_ptr->log_area_minimum_length =
cpu_to_le32(TPM_LOG_AREA_MINIMUM_SIZE);
/* log area start address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker, ACPI_BUILD_TABLE_FILE,
log_addr_offset, log_addr_size,
ACPI_BUILD_TPMLOG_FILE, 0);
build_header(linker, table_data,
(void *)tpm2_ptr, "TPM2", sizeof(*tpm2_ptr), 4, NULL, NULL);
}
#define HOLE_640K_START (640 * KiB)
#define HOLE_640K_END (1 * MiB)
static void
build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
{
AcpiSystemResourceAffinityTable *srat;
AcpiSratMemoryAffinity *numamem;
int i;
int srat_start, numa_start, slots;
uint64_t mem_len, mem_base, next_base;
MachineClass *mc = MACHINE_GET_CLASS(machine);
const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
PCMachineState *pcms = PC_MACHINE(machine);
ram_addr_t hotplugabble_address_space_size =
object_property_get_int(OBJECT(pcms), PC_MACHINE_DEVMEM_REGION_SIZE,
NULL);
srat_start = table_data->len;
srat = acpi_data_push(table_data, sizeof *srat);
srat->reserved1 = cpu_to_le32(1);
for (i = 0; i < apic_ids->len; i++) {
int node_id = apic_ids->cpus[i].props.node_id;
uint32_t apic_id = apic_ids->cpus[i].arch_id;
if (apic_id < 255) {
AcpiSratProcessorAffinity *core;
core = acpi_data_push(table_data, sizeof *core);
core->type = ACPI_SRAT_PROCESSOR_APIC;
core->length = sizeof(*core);
core->local_apic_id = apic_id;
core->proximity_lo = node_id;
memset(core->proximity_hi, 0, 3);
core->local_sapic_eid = 0;
core->flags = cpu_to_le32(1);
} else {
AcpiSratProcessorX2ApicAffinity *core;
core = acpi_data_push(table_data, sizeof *core);
core->type = ACPI_SRAT_PROCESSOR_x2APIC;
core->length = sizeof(*core);
core->x2apic_id = cpu_to_le32(apic_id);
core->proximity_domain = cpu_to_le32(node_id);
core->flags = cpu_to_le32(1);
}
}
/* 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;
for (i = 1; i < pcms->numa_nodes + 1; ++i) {
mem_base = next_base;
mem_len = pcms->node_mem[i - 1];
next_base = mem_base + mem_len;
/* Cut out the 640K hole */
if (mem_base <= HOLE_640K_START &&
next_base > HOLE_640K_START) {
mem_len -= next_base - HOLE_640K_START;
if (mem_len > 0) {
numamem = acpi_data_push(table_data, sizeof *numamem);
build_srat_memory(numamem, mem_base, mem_len, i - 1,
MEM_AFFINITY_ENABLED);
}
/* Check for the rare case: 640K < RAM < 1M */
if (next_base <= HOLE_640K_END) {
next_base = HOLE_640K_END;
continue;
}
mem_base = HOLE_640K_END;
mem_len = next_base - HOLE_640K_END;
}
/* Cut out the ACPI_PCI hole */
if (mem_base <= pcms->below_4g_mem_size &&
next_base > pcms->below_4g_mem_size) {
mem_len -= next_base - pcms->below_4g_mem_size;
if (mem_len > 0) {
numamem = acpi_data_push(table_data, sizeof *numamem);
build_srat_memory(numamem, mem_base, mem_len, i - 1,
MEM_AFFINITY_ENABLED);
}
mem_base = 1ULL << 32;
mem_len = next_base - pcms->below_4g_mem_size;
next_base = mem_base + mem_len;
}
if (mem_len > 0) {
numamem = acpi_data_push(table_data, sizeof *numamem);
build_srat_memory(numamem, mem_base, mem_len, i - 1,
MEM_AFFINITY_ENABLED);
}
}
slots = (table_data->len - numa_start) / sizeof *numamem;
for (; slots < pcms->numa_nodes + 2; slots++) {
numamem = acpi_data_push(table_data, sizeof *numamem);
build_srat_memory(numamem, 0, 0, 0, MEM_AFFINITY_NOFLAGS);
}
/*
* Entry is required for Windows to enable memory hotplug in OS
* and for Linux to enable SWIOTLB when booted with less than
* 4G of RAM. Windows works better if the entry sets proximity
* to the highest NUMA node in the machine.
* 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);
build_srat_memory(numamem, machine->device_memory->base,
hotplugabble_address_space_size, pcms->numa_nodes - 1,
MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
}
build_header(linker, table_data,
(void *)(table_data->data + srat_start),
"SRAT",
table_data->len - srat_start, 1, NULL, NULL);
}
static void
build_mcfg_q35(GArray *table_data, BIOSLinker *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, NULL, NULL);
}
/*
* VT-d spec 8.1 DMA Remapping Reporting Structure
* (version Oct. 2014 or later)
*/
static void
build_dmar_q35(GArray *table_data, BIOSLinker *linker)
{
int dmar_start = table_data->len;
AcpiTableDmar *dmar;
AcpiDmarHardwareUnit *drhd;
AcpiDmarRootPortATS *atsr;
uint8_t dmar_flags = 0;
X86IOMMUState *iommu = x86_iommu_get_default();
AcpiDmarDeviceScope *scope = NULL;
/* Root complex IOAPIC use one path[0] only */
size_t ioapic_scope_size = sizeof(*scope) + sizeof(scope->path[0]);
IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu);
assert(iommu);
if (iommu->intr_supported) {
dmar_flags |= 0x1; /* Flags: 0x1: INT_REMAP */
}
dmar = acpi_data_push(table_data, sizeof(*dmar));
dmar->host_address_width = intel_iommu->aw_bits - 1;
dmar->flags = dmar_flags;
/* DMAR Remapping Hardware Unit Definition structure */
drhd = acpi_data_push(table_data, sizeof(*drhd) + ioapic_scope_size);
drhd->type = cpu_to_le16(ACPI_DMAR_TYPE_HARDWARE_UNIT);
drhd->length = cpu_to_le16(sizeof(*drhd) + ioapic_scope_size);
drhd->flags = ACPI_DMAR_INCLUDE_PCI_ALL;
drhd->pci_segment = cpu_to_le16(0);
drhd->address = cpu_to_le64(Q35_HOST_BRIDGE_IOMMU_ADDR);
/* Scope definition for the root-complex IOAPIC. See VT-d spec
* 8.3.1 (version Oct. 2014 or later). */
scope = &drhd->scope[0];
scope->entry_type = 0x03; /* Type: 0x03 for IOAPIC */
scope->length = ioapic_scope_size;
scope->enumeration_id = ACPI_BUILD_IOAPIC_ID;
scope->bus = Q35_PSEUDO_BUS_PLATFORM;
scope->path[0].device = PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC);
scope->path[0].function = PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC);
if (iommu->dt_supported) {
atsr = acpi_data_push(table_data, sizeof(*atsr));
atsr->type = cpu_to_le16(ACPI_DMAR_TYPE_ATSR);
atsr->length = cpu_to_le16(sizeof(*atsr));
atsr->flags = ACPI_DMAR_ATSR_ALL_PORTS;
atsr->pci_segment = cpu_to_le16(0);
}
build_header(linker, table_data, (void *)(table_data->data + dmar_start),
"DMAR", table_data->len - dmar_start, 1, NULL, NULL);
}
/*
* IVRS table as specified in AMD IOMMU Specification v2.62, Section 5.2
* accessible here http://support.amd.com/TechDocs/48882_IOMMU.pdf
*/
static void
build_amd_iommu(GArray *table_data, BIOSLinker *linker)
{
int iommu_start = table_data->len;
AMDVIState *s = AMD_IOMMU_DEVICE(x86_iommu_get_default());
/* IVRS header */
acpi_data_push(table_data, sizeof(AcpiTableHeader));
/* IVinfo - IO virtualization information common to all
* IOMMU units in a system
*/
build_append_int_noprefix(table_data, 40UL << 8/* PASize */, 4);
/* reserved */
build_append_int_noprefix(table_data, 0, 8);
/* IVHD definition - type 10h */
build_append_int_noprefix(table_data, 0x10, 1);
/* virtualization flags */
build_append_int_noprefix(table_data,
(1UL << 0) | /* HtTunEn */
(1UL << 4) | /* iotblSup */
(1UL << 6) | /* PrefSup */
(1UL << 7), /* PPRSup */
1);
/* IVHD length */
build_append_int_noprefix(table_data, 28, 2);
/* DeviceID */
build_append_int_noprefix(table_data, s->devid, 2);
/* Capability offset */
build_append_int_noprefix(table_data, s->capab_offset, 2);
/* IOMMU base address */
build_append_int_noprefix(table_data, s->mmio.addr, 8);
/* PCI Segment Group */
build_append_int_noprefix(table_data, 0, 2);
/* IOMMU info */
build_append_int_noprefix(table_data, 0, 2);
/* IOMMU Feature Reporting */
build_append_int_noprefix(table_data,
(48UL << 30) | /* HATS */
(48UL << 28) | /* GATS */
(1UL << 2), /* GTSup */
4);
/*
* Type 1 device entry reporting all devices
* These are 4-byte device entries currently reporting the range of
* Refer to Spec - Table 95:IVHD Device Entry Type Codes(4-byte)
*/
build_append_int_noprefix(table_data, 0x0000001, 4);
build_header(linker, table_data, (void *)(table_data->data + iommu_start),
"IVRS", table_data->len - iommu_start, 1, NULL, NULL);
}
static GArray *
build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned rsdt_tbl_offset)
{
AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
unsigned rsdt_pa_size = sizeof(rsdp->rsdt_physical_address);
unsigned rsdt_pa_offset =
(char *)&rsdp->rsdt_physical_address - rsdp_table->data;
bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, rsdp_table, 16,
true /* fseg memory */);
memcpy(&rsdp->signature, "RSD PTR ", 8);
memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, 6);
/* Address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker,
ACPI_BUILD_RSDP_FILE, rsdt_pa_offset, rsdt_pa_size,
ACPI_BUILD_TABLE_FILE, rsdt_tbl_offset);
/* Checksum to be filled by Guest linker */
bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
(char *)rsdp - rsdp_table->data, sizeof *rsdp,
(char *)&rsdp->checksum - rsdp_table->data);
return rsdp_table;
}
typedef
struct AcpiBuildState {
/* Copy of table in RAM (for patching). */
MemoryRegion *table_mr;
/* Is table patched? */
uint8_t patched;
void *rsdp;
MemoryRegion *rsdp_mr;
MemoryRegion *linker_mr;
} AcpiBuildState;
static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg)
{
Object *pci_host;
QObject *o;
pci_host = acpi_get_i386_pci_host();
g_assert(pci_host);
o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
if (!o) {
return false;
}
mcfg->mcfg_base = qnum_get_uint(qobject_to(QNum, o));
qobject_unref(o);
o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
assert(o);
mcfg->mcfg_size = qnum_get_uint(qobject_to(QNum, o));
qobject_unref(o);
return true;
}
static
void acpi_build(AcpiBuildTables *tables, MachineState *machine)
{
PCMachineState *pcms = PC_MACHINE(machine);
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
GArray *table_offsets;
unsigned facs, dsdt, rsdt, fadt;
AcpiPmInfo pm;
AcpiMiscInfo misc;
AcpiMcfgInfo mcfg;
Range pci_hole, pci_hole64;
uint8_t *u;
size_t aml_len = 0;
GArray *tables_blob = tables->table_data;
AcpiSlicOem slic_oem = { .id = NULL, .table_id = NULL };
Object *vmgenid_dev;
acpi_get_pm_info(&pm);
acpi_get_misc_info(&misc);
acpi_get_pci_holes(&pci_hole, &pci_hole64);
acpi_get_slic_oem(&slic_oem);
table_offsets = g_array_new(false, true /* clear */,
sizeof(uint32_t));
ACPI_BUILD_DPRINTF("init ACPI tables\n");
bios_linker_loader_alloc(tables->linker,
ACPI_BUILD_TABLE_FILE, tables_blob,
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_blob->len;
build_facs(tables_blob, tables->linker);
/* DSDT is pointed to by FADT */
dsdt = tables_blob->len;
build_dsdt(tables_blob, tables->linker, &pm, &misc,
&pci_hole, &pci_hole64, machine);
/* Count the size of the DSDT and SSDT, we will need it for legacy
* sizing of ACPI tables.
*/
aml_len += tables_blob->len - dsdt;
/* ACPI tables pointed to by RSDT */
fadt = tables_blob->len;
acpi_add_table(table_offsets, tables_blob);
pm.fadt.facs_tbl_offset = &facs;
pm.fadt.dsdt_tbl_offset = &dsdt;
pm.fadt.xdsdt_tbl_offset = &dsdt;
build_fadt(tables_blob, tables->linker, &pm.fadt,
slic_oem.id, slic_oem.table_id);
aml_len += tables_blob->len - fadt;
acpi_add_table(table_offsets, tables_blob);
build_madt(tables_blob, tables->linker, pcms);
vmgenid_dev = find_vmgenid_dev();
if (vmgenid_dev) {
acpi_add_table(table_offsets, tables_blob);
vmgenid_build_acpi(VMGENID(vmgenid_dev), tables_blob,
tables->vmgenid, tables->linker);
}
if (misc.has_hpet) {
acpi_add_table(table_offsets, tables_blob);
build_hpet(tables_blob, tables->linker);
}
if (misc.tpm_version != TPM_VERSION_UNSPEC) {
acpi_add_table(table_offsets, tables_blob);
build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog);
if (misc.tpm_version == TPM_VERSION_2_0) {
acpi_add_table(table_offsets, tables_blob);
build_tpm2(tables_blob, tables->linker, tables->tcpalog);
}
}
if (pcms->numa_nodes) {
acpi_add_table(table_offsets, tables_blob);
build_srat(tables_blob, tables->linker, machine);
if (have_numa_distance) {
acpi_add_table(table_offsets, tables_blob);
build_slit(tables_blob, tables->linker);
}
}
if (acpi_get_mcfg(&mcfg)) {
acpi_add_table(table_offsets, tables_blob);
build_mcfg_q35(tables_blob, tables->linker, &mcfg);
}
if (x86_iommu_get_default()) {
IommuType IOMMUType = x86_iommu_get_type();
if (IOMMUType == TYPE_AMD) {
acpi_add_table(table_offsets, tables_blob);
build_amd_iommu(tables_blob, tables->linker);
} else if (IOMMUType == TYPE_INTEL) {
acpi_add_table(table_offsets, tables_blob);
build_dmar_q35(tables_blob, tables->linker);
}
}
if (pcms->acpi_nvdimm_state.is_enabled) {
nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
&pcms->acpi_nvdimm_state, machine->ram_slots);
}
/* 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_blob);
g_array_append_vals(tables_blob, u, len);
}
/* RSDT is pointed to by RSDP */
rsdt = tables_blob->len;
build_rsdt(tables_blob, tables->linker, table_offsets,
slic_oem.id, slic_oem.table_id);
/* 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.
*
* 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 (pcmc->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 =
pcmc->legacy_acpi_table_size +
ACPI_BUILD_LEGACY_CPU_AML_SIZE * pcms->apic_id_limit;
int legacy_table_size =
ROUND_UP(tables_blob->len - aml_len + legacy_aml_len,
ACPI_BUILD_ALIGN_SIZE);
if (tables_blob->len > legacy_table_size) {
/* Should happen only with PCI bridges and -M pc-i440fx-2.0. */
warn_report("ACPI table size %u exceeds %d bytes,"
" migration may not work",
tables_blob->len, legacy_table_size);
error_printf("Try removing CPUs, NUMA nodes, memory slots"
" or PCI bridges.");
}
g_array_set_size(tables_blob, legacy_table_size);
} else {
/* Make sure we have a buffer in case we need to resize the tables. */
if (tables_blob->len > ACPI_BUILD_TABLE_SIZE / 2) {
/* As of QEMU 2.1, this fires with 160 VCPUs and 255 memory slots. */
warn_report("ACPI table size %u exceeds %d bytes,"
" migration may not work",
tables_blob->len, ACPI_BUILD_TABLE_SIZE / 2);
error_printf("Try removing CPUs, NUMA nodes, memory slots"
" or PCI bridges.");
}
acpi_align_size(tables_blob, ACPI_BUILD_TABLE_SIZE);
}
acpi_align_size(tables->linker->cmd_blob, ACPI_BUILD_ALIGN_SIZE);
/* Cleanup memory that's no longer used. */
g_array_free(table_offsets, true);
}
static void acpi_ram_update(MemoryRegion *mr, GArray *data)
{
uint32_t size = acpi_data_len(data);
/* Make sure RAM size is correct - in case it got changed e.g. by migration */
memory_region_ram_resize(mr, size, &error_abort);
memcpy(memory_region_get_ram_ptr(mr), data->data, size);
memory_region_set_dirty(mr, 0, size);
}
static void acpi_build_update(void *build_opaque)
{
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(&tables, MACHINE(qdev_get_machine()));
acpi_ram_update(build_state->table_mr, tables.table_data);
if (build_state->rsdp) {
memcpy(build_state->rsdp, tables.rsdp->data, acpi_data_len(tables.rsdp));
} else {
acpi_ram_update(build_state->rsdp_mr, tables.rsdp);
}
acpi_ram_update(build_state->linker_mr, tables.linker->cmd_blob);
acpi_build_tables_cleanup(&tables, true);
}
static void acpi_build_reset(void *build_opaque)
{
AcpiBuildState *build_state = build_opaque;
build_state->patched = 0;
}
static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state,
GArray *blob, const char *name,
uint64_t max_size)
{
return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
name, acpi_build_update, build_state, NULL, true);
}
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(void)
{
PCMachineState *pcms = PC_MACHINE(qdev_get_machine());
PCMachineClass *pcmc = PC_MACHINE_GET_CLASS(pcms);
AcpiBuildTables tables;
AcpiBuildState *build_state;
Object *vmgenid_dev;
if (!pcms->fw_cfg) {
ACPI_BUILD_DPRINTF("No fw cfg. Bailing out.\n");
return;
}
if (!pcms->acpi_build_enabled) {
ACPI_BUILD_DPRINTF("ACPI build disabled. Bailing out.\n");
return;
}
if (!acpi_enabled) {
ACPI_BUILD_DPRINTF("ACPI disabled. Bailing out.\n");
return;
}
build_state = g_malloc0(sizeof *build_state);
acpi_build_tables_init(&tables);
acpi_build(&tables, MACHINE(pcms));
/* Now expose it all to Guest */
build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data,
ACPI_BUILD_TABLE_FILE,
ACPI_BUILD_TABLE_MAX_SIZE);
assert(build_state->table_mr != NULL);
build_state->linker_mr =
acpi_add_rom_blob(build_state, tables.linker->cmd_blob,
"etc/table-loader", 0);
fw_cfg_add_file(pcms->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
tables.tcpalog->data, acpi_data_len(tables.tcpalog));
vmgenid_dev = find_vmgenid_dev();
if (vmgenid_dev) {
vmgenid_add_fw_cfg(VMGENID(vmgenid_dev), pcms->fw_cfg,
tables.vmgenid);
}
if (!pcmc->rsdp_in_ram) {
/*
* Keep for compatibility with old machine types.
* Though RSDP is small, its contents isn't immutable, so
* we'll update it along with the rest of tables on guest access.
*/
uint32_t rsdp_size = acpi_data_len(tables.rsdp);
build_state->rsdp = g_memdup(tables.rsdp->data, rsdp_size);
fw_cfg_add_file_callback(pcms->fw_cfg, ACPI_BUILD_RSDP_FILE,
acpi_build_update, NULL, build_state,
build_state->rsdp, rsdp_size, true);
build_state->rsdp_mr = NULL;
} else {
build_state->rsdp = NULL;
build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
ACPI_BUILD_RSDP_FILE, 0);
}
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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