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47a373faa6
qemu-e2k/hw/i386/acpi-build.c
Igor Mammedov 47a373faa6 acpi: pc/q35: drop ad-hoc PCI-ISA bridge AML routines and let bus ennumeration generate AML 
PCI-ISA bridges that are built in PIIX/Q35 are building its own AML
using AcpiDevAmlIf interface. Now build_append_pci_bus_devices()
gained AcpiDevAmlIf interface support to get AML of devices atached
to PCI slots.
So drop ad-hoc build_q35_isa_bridge()/build_piix4_isa_bridge()
and let PCI bus enumeration to include PCI-ISA bridge AML
when it's enumerated by build_append_pci_bus_devices().

AML change is mostly contextual, which moves whole ISA hierarchy
directly under PCI host bridge instead of it being described
as separate \SB.PCI0.ISA block.

Note:
If bus/slot that hosts ISA bridge has BSEL set, it will gain new
ASUN and _DMS entries (i.e. acpi-index support, but it should not
cause any functional change and that is fine from PCI Firmware
spec point of view), potentially it's possible to suppress that
by adding a flag to PCIDevice but I don't see a reason to do that
yet, I'd rather treat bridge just as any other PCI device if it's
possible.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20221017102146.2254096-4-imammedo@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-11-07 14:08:17 -05:00

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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 "acpi-common.h"
#include "qemu/bitmap.h"
#include "qemu/error-report.h"
#include "hw/pci/pci.h"
#include "hw/cxl/cxl.h"
#include "hw/core/cpu.h"
#include "target/i386/cpu.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/acpi/acpi_aml_interface.h"
#include "hw/input/i8042.h"
#include "hw/acpi/memory_hotplug.h"
#include "sysemu/tpm.h"
#include "hw/acpi/tpm.h"
#include "hw/acpi/vmgenid.h"
#include "hw/acpi/erst.h"
#include "hw/acpi/piix4.h"
#include "sysemu/tpm_backend.h"
#include "hw/rtc/mc146818rtc_regs.h"
#include "migration/vmstate.h"
#include "hw/mem/memory-device.h"
#include "hw/mem/nvdimm.h"
#include "sysemu/numa.h"
#include "sysemu/reset.h"
#include "hw/hyperv/vmbus-bridge.h"
/* Supported chipsets: */
#include "hw/southbridge/piix.h"
#include "hw/acpi/pcihp.h"
#include "hw/i386/fw_cfg.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 "hw/acpi/utils.h"
#include "hw/acpi/pci.h"
#include "hw/acpi/cxl.h"
#include "qom/qom-qobject.h"
#include "hw/i386/amd_iommu.h"
#include "hw/i386/intel_iommu.h"
#include "hw/virtio/virtio-iommu.h"
#include "hw/acpi/hmat.h"
#include "hw/acpi/viot.h"
#include "hw/acpi/cxl.h"
#include CONFIG_DEVICES
/* 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
typedef struct AcpiPmInfo {
bool s3_disabled;
bool s4_disabled;
bool pcihp_bridge_en;
bool smi_on_cpuhp;
bool smi_on_cpu_unplug;
bool pcihp_root_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;
#ifdef CONFIG_TPM
TPMVersion tpm_version;
#endif
const unsigned char *dsdt_code;
unsigned dsdt_size;
} AcpiMiscInfo;
typedef struct AcpiBuildPciBusHotplugState {
GArray *device_table;
GArray *notify_table;
struct AcpiBuildPciBusHotplugState *parent;
bool pcihp_bridge_en;
} AcpiBuildPciBusHotplugState;
typedef struct FwCfgTPMConfig {
uint32_t tpmppi_address;
uint8_t tpm_version;
uint8_t tpmppi_version;
} QEMU_PACKED FwCfgTPMConfig;
static bool acpi_get_mcfg(AcpiMcfgInfo *mcfg);
const struct AcpiGenericAddress x86_nvdimm_acpi_dsmio = {
.space_id = AML_AS_SYSTEM_IO,
.address = NVDIMM_ACPI_IO_BASE,
.bit_width = NVDIMM_ACPI_IO_LEN << 3
};
static void init_common_fadt_data(MachineState *ms, Object *o,
AcpiFadtData *data)
{
X86MachineState *x86ms = X86_MACHINE(ms);
/*
* "ICH9-LPC" or "PIIX4_PM" has "smm-compat" property to keep the old
* behavior for compatibility irrelevant to smm_enabled, which doesn't
* comforms to ACPI spec.
*/
bool smm_enabled = object_property_get_bool(o, "smm-compat", NULL) ?
true : x86_machine_is_smm_enabled(x86ms);
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
*/
((ms->smp.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 = smm_enabled ? ACPI_PORT_SMI_CMD : 0,
.sci_int = object_property_get_uint(o, ACPI_PM_PROP_SCI_INT, NULL),
.acpi_enable_cmd =
smm_enabled ?
object_property_get_uint(o, ACPI_PM_PROP_ACPI_ENABLE_CMD, NULL) :
0,
.acpi_disable_cmd =
smm_enabled ?
object_property_get_uint(o, ACPI_PM_PROP_ACPI_DISABLE_CMD, NULL) :
0,
.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)
},
};
/*
* ACPI v2, Table 5-10 - Fixed ACPI Description Table Boot Architecture
* Flags, bit offset 1 - 8042.
*/
fadt.iapc_boot_arch = iapc_boot_arch_8042();
*data = fadt;
}
static Object *object_resolve_type_unambiguous(const char *typename)
{
bool ambig;
Object *o = object_resolve_path_type("", typename, &ambig);
if (ambig || !o) {
return NULL;
}
return o;
}
static void acpi_get_pm_info(MachineState *machine, AcpiPmInfo *pm)
{
Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM);
Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE);
Object *obj = piix ? piix : lpc;
QObject *o;
pm->cpu_hp_io_base = 0;
pm->pcihp_io_base = 0;
pm->pcihp_io_len = 0;
pm->smi_on_cpuhp = false;
pm->smi_on_cpu_unplug = false;
assert(obj);
init_common_fadt_data(machine, 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;
}
if (lpc) {
uint64_t smi_features = object_property_get_uint(lpc,
ICH9_LPC_SMI_NEGOTIATED_FEAT_PROP, NULL);
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;
pm->smi_on_cpuhp =
!!(smi_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOTPLUG_BIT));
pm->smi_on_cpu_unplug =
!!(smi_features & BIT_ULL(ICH9_LPC_SMI_F_CPU_HOT_UNPLUG_BIT));
}
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);
/* 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 != PIIX_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_PM_PROP_ACPI_PCIHP_BRIDGE,
NULL);
pm->pcihp_root_en =
object_property_get_bool(obj, ACPI_PM_PROP_ACPI_PCI_ROOTHP,
NULL);
}
static void acpi_get_misc_info(AcpiMiscInfo *info)
{
Object *piix = object_resolve_type_unambiguous(TYPE_PIIX4_PM);
Object *lpc = object_resolve_type_unambiguous(TYPE_ICH9_LPC_DEVICE);
assert(!!piix != !!lpc);
if (piix) {
info->is_piix4 = true;
}
if (lpc) {
info->is_piix4 = false;
}
info->has_hpet = hpet_find();
#ifdef CONFIG_TPM
info->tpm_version = tpm_get_version(tpm_find());
#endif
}
/*
* 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.
*/
Object *acpi_get_i386_pci_host(void)
{
PCIHostState *host;
host = PCI_HOST_BRIDGE(object_resolve_path("/machine/i440fx", NULL));
if (!host) {
host = PCI_HOST_BRIDGE(object_resolve_path("/machine/q35", NULL));
}
return OBJECT(host);
}
static void acpi_get_pci_holes(Range *hole, Range *hole64)
{
Object *pci_host;
pci_host = acpi_get_i386_pci_host();
if (!pci_host) {
return;
}
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));
}
/*
* ACPI spec 1.0b,
* 5.2.6 Firmware ACPI Control Structure
*/
static void
build_facs(GArray *table_data)
{
const char *sig = "FACS";
const uint8_t reserved[40] = {};
g_array_append_vals(table_data, sig, 4); /* Signature */
build_append_int_noprefix(table_data, 64, 4); /* Length */
build_append_int_noprefix(table_data, 0, 4); /* Hardware Signature */
build_append_int_noprefix(table_data, 0, 4); /* Firmware Waking Vector */
build_append_int_noprefix(table_data, 0, 4); /* Global Lock */
build_append_int_noprefix(table_data, 0, 4); /* Flags */
g_array_append_vals(table_data, reserved, 40); /* Reserved */
}
Aml *aml_pci_device_dsm(void)
{
Aml *method;
method = aml_method("_DSM", 4, AML_SERIALIZED);
{
Aml *params = aml_local(0);
Aml *pkg = aml_package(2);
aml_append(pkg, aml_name("BSEL"));
aml_append(pkg, aml_name("ASUN"));
aml_append(method, aml_store(pkg, params));
aml_append(method,
aml_return(aml_call5("PDSM", aml_arg(0), aml_arg(1),
aml_arg(2), aml_arg(3), params))
);
}
return method;
}
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 devfn;
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 (devfn = 0; devfn < ARRAY_SIZE(bus->devices); devfn++) {
DeviceClass *dc;
PCIDeviceClass *pc;
PCIDevice *pdev = bus->devices[devfn];
int slot = PCI_SLOT(devfn);
int func = PCI_FUNC(devfn);
/* ACPI spec: 1.0b: Table 6-2 _ADR Object Bus Types, PCI type */
int adr = slot << 16 | func;
bool hotpluggbale_slot = false;
bool bridge_in_acpi = false;
bool cold_plugged_bridge = false;
if (pdev) {
pc = PCI_DEVICE_GET_CLASS(pdev);
dc = DEVICE_GET_CLASS(pdev);
/*
* Cold plugged bridges aren't themselves hot-pluggable.
* Hotplugged bridges *are* hot-pluggable.
*/
cold_plugged_bridge = pc->is_bridge && !DEVICE(pdev)->hotplugged;
bridge_in_acpi = cold_plugged_bridge && pcihp_bridge_en;
hotpluggbale_slot = bsel && dc->hotpluggable &&
!cold_plugged_bridge;
/*
* allow describing coldplugged bridges in ACPI even if they are not
* on function 0, as they are not unpluggable, for all other devices
* generate description only for function 0 per slot
*/
if (func && !bridge_in_acpi) {
continue;
}
} else {
/*
* hotplug is supported only for non-multifunction device
* so generate device description only for function 0
*/
if (bsel && !func) {
if (pci_bus_is_express(bus) && slot > 0) {
break;
}
/* mark it as empty hotpluggable slot */
hotpluggbale_slot = true;
} else {
continue;
}
}
/* start to compose PCI device descriptor */
dev = aml_device("S%.02X", devfn);
aml_append(dev, aml_name_decl("_ADR", aml_int(adr)));
if (bsel) {
/*
* Can't declare _SUN here for every device as it changes 'slot'
* enumeration order in linux kernel, so use another variable for it
*/
aml_append(dev, aml_name_decl("ASUN", aml_int(slot)));
aml_append(dev, aml_pci_device_dsm());
}
call_dev_aml_func(DEVICE(pdev), dev);
bridge_in_acpi = cold_plugged_bridge && pcihp_bridge_en;
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);
}
if (hotpluggbale_slot) {
aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
/* add _EJ0 to make slot hotpluggable */
method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
aml_append(method,
aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
);
aml_append(dev, method);
build_append_pcihp_notify_entry(notify_method, slot);
}
/* device 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 this method for root bus only when hotplug is enabled since DSDT
* expects it.
*/
if (bsel || pcihp_bridge_en) {
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) {
if (pci_bus_is_root(sec)) {
continue;
}
aml_append(method, aml_name("^S%.02X.PCNT",
sec->parent_dev->devfn));
}
}
aml_append(parent_scope, method);
}
qobject_unref(bsel);
}
static Aml *aml_pci_pdsm(void)
{
Aml *method, *UUID, *ifctx, *ifctx1;
Aml *ret = aml_local(0);
Aml *caps = aml_local(1);
Aml *acpi_index = aml_local(2);
Aml *zero = aml_int(0);
Aml *one = aml_int(1);
Aml *func = aml_arg(2);
Aml *rev = aml_arg(1);
Aml *params = aml_arg(4);
Aml *bnum = aml_derefof(aml_index(params, aml_int(0)));
Aml *sunum = aml_derefof(aml_index(params, aml_int(1)));
method = aml_method("PDSM", 5, AML_SERIALIZED);
/* get supported functions */
ifctx = aml_if(aml_equal(func, zero));
{
uint8_t byte_list[1] = { 0 }; /* nothing supported yet */
aml_append(ifctx, aml_store(aml_buffer(1, byte_list), ret));
aml_append(ifctx, aml_store(zero, caps));
/*
* PCI Firmware Specification 3.1
* 4.6. _DSM Definitions for PCI
*/
UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(0), UUID)));
{
/* call is for unsupported UUID, bail out */
aml_append(ifctx1, aml_return(ret));
}
aml_append(ifctx, ifctx1);
ifctx1 = aml_if(aml_lless(rev, aml_int(2)));
{
/* call is for unsupported REV, bail out */
aml_append(ifctx1, aml_return(ret));
}
aml_append(ifctx, ifctx1);
aml_append(ifctx,
aml_store(aml_call2("AIDX", bnum, sunum), acpi_index));
/*
* advertise function 7 if device has acpi-index
* acpi_index values:
* 0: not present (default value)
* FFFFFFFF: not supported (old QEMU without PIDX reg)
* other: device's acpi-index
*/
ifctx1 = aml_if(aml_lnot(
aml_or(aml_equal(acpi_index, zero),
aml_equal(acpi_index, aml_int(0xFFFFFFFF)), NULL)
));
{
/* have supported functions */
aml_append(ifctx1, aml_or(caps, one, caps));
/* support for function 7 */
aml_append(ifctx1,
aml_or(caps, aml_shiftleft(one, aml_int(7)), caps));
}
aml_append(ifctx, ifctx1);
aml_append(ifctx, aml_store(caps, aml_index(ret, zero)));
aml_append(ifctx, aml_return(ret));
}
aml_append(method, ifctx);
/* handle specific functions requests */
/*
* PCI Firmware Specification 3.1
* 4.6.7. _DSM for Naming a PCI or PCI Express Device Under
* Operating Systems
*/
ifctx = aml_if(aml_equal(func, aml_int(7)));
{
Aml *pkg = aml_package(2);
aml_append(pkg, zero);
/*
* optional, if not impl. should return null string
*/
aml_append(pkg, aml_string("%s", ""));
aml_append(ifctx, aml_store(pkg, ret));
aml_append(ifctx, aml_store(aml_call2("AIDX", bnum, sunum), acpi_index));
/*
* update acpi-index to actual value
*/
aml_append(ifctx, aml_store(acpi_index, aml_index(ret, zero)));
aml_append(ifctx, aml_return(ret));
}
aml_append(method, ifctx);
return method;
}
/**
* 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;
}
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_vmbus_device_aml(VMBusBridge *vmbus_bridge)
{
Aml *dev;
Aml *method;
Aml *crs;
dev = aml_device("VMBS");
aml_append(dev, aml_name_decl("STA", aml_int(0xF)));
aml_append(dev, aml_name_decl("_HID", aml_string("VMBus")));
aml_append(dev, aml_name_decl("_UID", aml_int(0x0)));
aml_append(dev, aml_name_decl("_DDN", aml_string("VMBUS")));
method = aml_method("_DIS", 0, AML_NOTSERIALIZED);
aml_append(method, aml_store(aml_and(aml_name("STA"), aml_int(0xD), NULL),
aml_name("STA")));
aml_append(dev, method);
method = aml_method("_PS0", 0, AML_NOTSERIALIZED);
aml_append(method, aml_store(aml_or(aml_name("STA"), aml_int(0xF), NULL),
aml_name("STA")));
aml_append(dev, method);
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_name("STA")));
aml_append(dev, method);
aml_append(dev, aml_name_decl("_PS3", aml_int(0x0)));
crs = aml_resource_template();
aml_append(crs, aml_irq_no_flags(vmbus_bridge->irq));
aml_append(dev, aml_name_decl("_CRS", crs));
return dev;
}
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 *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);
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 *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);
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 Aml *build_q35_dram_controller(const AcpiMcfgInfo *mcfg)
{
Aml *dev;
Aml *resource_template;
/* DRAM controller */
dev = aml_device("DRAC");
aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C01")));
resource_template = aml_resource_template();
if (mcfg->base + mcfg->size - 1 >= (1ULL << 32)) {
aml_append(resource_template,
aml_qword_memory(AML_POS_DECODE,
AML_MIN_FIXED,
AML_MAX_FIXED,
AML_NON_CACHEABLE,
AML_READ_WRITE,
0x0000000000000000,
mcfg->base,
mcfg->base + mcfg->size - 1,
0x0000000000000000,
mcfg->size));
} else {
aml_append(resource_template,
aml_dword_memory(AML_POS_DECODE,
AML_MIN_FIXED,
AML_MAX_FIXED,
AML_NON_CACHEABLE,
AML_READ_WRITE,
0x0000000000000000,
mcfg->base,
mcfg->base + mcfg->size - 1,
0x0000000000000000,
mcfg->size));
}
aml_append(dev, aml_name_decl("_CRS", resource_template));
return dev;
}
static void build_x86_acpi_pci_hotplug(Aml *table, uint64_t pcihp_addr)
{
Aml *scope;
Aml *field;
Aml *method;
scope = aml_scope("_SB.PCI0");
aml_append(scope,
aml_operation_region("PCST", AML_SYSTEM_IO, aml_int(pcihp_addr), 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(pcihp_addr + ACPI_PCIHP_SEJ_BASE), 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(pcihp_addr + ACPI_PCIHP_BNMR_BASE), 0x08));
field = aml_field("BNMR", AML_DWORD_ACC, AML_NOLOCK, AML_WRITE_AS_ZEROS);
aml_append(field, aml_named_field("BNUM", 32));
aml_append(field, aml_named_field("PIDX", 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);
method = aml_method("AIDX", 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("PIDX")));
aml_append(method, aml_store(aml_name("PIDX"), aml_local(0)));
aml_append(method, aml_release(aml_name("BLCK")));
aml_append(method, aml_return(aml_local(0)));
aml_append(scope, method);
aml_append(scope, aml_pci_pdsm());
aml_append(table, scope);
}
static Aml *build_q35_osc_method(bool enable_native_pcie_hotplug)
{
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)
* Disable PCIe Native Hot-plug if ACPI PCI Hot-plug is enabled.
*/
aml_append(if_ctx, aml_and(a_ctrl,
aml_int(0x1E | (enable_native_pcie_hotplug ? 0x1 : 0x0)), 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_smb0(Aml *table, int devnr, int func)
{
Aml *scope = aml_scope("_SB.PCI0");
Aml *dev = aml_device("SMB0");
bool ambiguous;
Object *obj;
/*
* temporarily fish out device hosting SMBUS, build_smb0 will be gone once
* PCI enumeration will be switched to call_dev_aml_func()
*/
obj = object_resolve_path_type("", TYPE_ICH9_SMB_DEVICE, &ambiguous);
assert(obj && !ambiguous);
aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
call_dev_aml_func(DEVICE(obj), dev);
aml_append(scope, dev);
aml_append(table, scope);
}
static void build_acpi0017(Aml *table)
{
Aml *dev, *scope, *method;
scope = aml_scope("_SB");
dev = aml_device("CXLM");
aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0017")));
method = aml_method("_STA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_int(0x01)));
aml_append(dev, method);
aml_append(scope, dev);
aml_append(table, scope);
}
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);
X86MachineState *x86ms = X86_MACHINE(machine);
AcpiMcfgInfo mcfg;
bool mcfg_valid = !!acpi_get_mcfg(&mcfg);
uint32_t nr_mem = machine->ram_slots;
int root_bus_limit = 0xFF;
PCIBus *bus = NULL;
#ifdef CONFIG_TPM
TPMIf *tpm = tpm_find();
#endif
bool cxl_present = false;
int i;
VMBusBridge *vmbus_bridge = vmbus_bridge_find();
AcpiTable table = { .sig = "DSDT", .rev = 1, .oem_id = x86ms->oem_id,
.oem_table_id = x86ms->oem_table_id };
acpi_table_begin(&table, table_data);
dsdt = init_aml_allocator();
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(pcmc->pci_root_uid)));
aml_append(sb_scope, dev);
aml_append(dsdt, sb_scope);
if (pm->pcihp_bridge_en || pm->pcihp_root_en) {
build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base);
}
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(pcmc->pci_root_uid)));
aml_append(dev, build_q35_osc_method(!pm->pcihp_bridge_en));
aml_append(sb_scope, dev);
if (mcfg_valid) {
aml_append(sb_scope, build_q35_dram_controller(&mcfg));
}
if (pm->smi_on_cpuhp) {
/* reserve SMI block resources, IO ports 0xB2, 0xB3 */
dev = aml_device("PCI0.SMI0");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A06")));
aml_append(dev, aml_name_decl("_UID", aml_string("SMI resources")));
crs = aml_resource_template();
aml_append(crs,
aml_io(
AML_DECODE16,
ACPI_PORT_SMI_CMD,
ACPI_PORT_SMI_CMD,
1,
2)
);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(dev, aml_operation_region("SMIR", AML_SYSTEM_IO,
aml_int(ACPI_PORT_SMI_CMD), 2));
field = aml_field("SMIR", AML_BYTE_ACC, AML_NOLOCK,
AML_WRITE_AS_ZEROS);
aml_append(field, aml_named_field("SMIC", 8));
aml_append(field, aml_reserved_field(8));
aml_append(dev, field);
aml_append(sb_scope, dev);
}
aml_append(dsdt, sb_scope);
if (pm->pcihp_bridge_en) {
build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base);
}
build_q35_pci0_int(dsdt);
if (pcms->smbus) {
build_smb0(dsdt, ICH9_SMB_DEV, ICH9_SMB_FUNC);
}
}
if (misc->has_hpet) {
build_hpet_aml(dsdt);
}
if (vmbus_bridge) {
sb_scope = aml_scope("_SB");
aml_append(sb_scope, build_vmbus_device_aml(vmbus_bridge));
aml_append(dsdt, sb_scope);
}
if (pcmc->legacy_cpu_hotplug) {
build_legacy_cpu_hotplug_aml(dsdt, machine, pm->cpu_hp_io_base);
} else {
CPUHotplugFeatures opts = {
.acpi_1_compatible = true, .has_legacy_cphp = true,
.smi_path = pm->smi_on_cpuhp ? "\\_SB.PCI0.SMI0.SMIC" : NULL,
.fw_unplugs_cpu = pm->smi_on_cpu_unplug,
};
build_cpus_aml(dsdt, machine, opts, pm->cpu_hp_io_base,
"\\_SB.PCI0", "\\_GPE._E02");
}
if (pcms->memhp_io_base && nr_mem) {
build_memory_hotplug_aml(dsdt, nr_mem, "\\_SB.PCI0",
"\\_GPE._E03", AML_SYSTEM_IO,
pcms->memhp_io_base);
}
scope = aml_scope("_GPE");
{
aml_append(scope, aml_name_decl("_HID", aml_string("ACPI0006")));
if (pm->pcihp_bridge_en || pm->pcihp_root_en) {
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 (machine->nvdimms_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");
if (pci_bus_is_cxl(bus)) {
dev = aml_device("CL%.02X", bus_num);
} else {
dev = aml_device("PC%.02X", bus_num);
}
aml_append(dev, aml_name_decl("_UID", aml_int(bus_num)));
aml_append(dev, aml_name_decl("_BBN", aml_int(bus_num)));
if (pci_bus_is_cxl(bus)) {
struct Aml *pkg = aml_package(2);
aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0016")));
aml_append(pkg, aml_eisaid("PNP0A08"));
aml_append(pkg, aml_eisaid("PNP0A03"));
aml_append(dev, aml_name_decl("_CID", pkg));
aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
aml_append(dev, aml_name_decl("_UID", aml_int(bus_num)));
build_cxl_osc_method(dev);
} else if (pci_bus_is_express(bus)) {
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A08")));
aml_append(dev, aml_name_decl("_CID", aml_eisaid("PNP0A03")));
/* Expander bridges do not have ACPI PCI Hot-plug enabled */
aml_append(dev, build_q35_osc_method(true));
} else {
aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0A03")));
}
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,
0, 0, 0, 0);
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
aml_append(dsdt, scope);
/* Handle the ranges for the PXB expanders */
if (pci_bus_is_cxl(bus)) {
MemoryRegion *mr = &pcms->cxl_devices_state.host_mr;
uint64_t base = mr->addr;
cxl_present = true;
crs_range_insert(crs_range_set.mem_ranges, base,
base + memory_region_size(mr) - 1);
}
}
}
if (cxl_present) {
build_acpi0017(dsdt);
}
/*
* At this point crs_range_set has all the ranges used by pci
* busses *other* than PCI0. These ranges will be excluded from
* the PCI0._CRS. Add mmconfig to the set so it will be excluded
* too.
*/
if (mcfg_valid) {
crs_range_insert(crs_range_set.mem_ranges,
mcfg.base, mcfg.base + mcfg.size - 1);
}
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));
}
}
#ifdef CONFIG_TPM
if (TPM_IS_TIS_ISA(tpm_find())) {
aml_append(crs, aml_memory32_fixed(TPM_TIS_ADDR_BASE,
TPM_TIS_ADDR_SIZE, AML_READ_WRITE));
}
#endif
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 && (pm->pcihp_bridge_en || pm->pcihp_root_en)) {
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 */
{
scope = aml_scope("\\_SB.PCI0");
fw_cfg_add_acpi_dsdt(scope, x86ms->fw_cfg);
aml_append(dsdt, scope);
}
sb_scope = aml_scope("\\_SB");
{
Object *pci_host = acpi_get_i386_pci_host();
if (pci_host) {
PCIBus *bus = PCI_HOST_BRIDGE(pci_host)->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);
aml_append(sb_scope, scope);
}
}
#ifdef CONFIG_TPM
if (TPM_IS_CRB(tpm)) {
dev = aml_device("TPM");
aml_append(dev, aml_name_decl("_HID", aml_string("MSFT0101")));
aml_append(dev, aml_name_decl("_STR",
aml_string("TPM 2.0 Device")));
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));
aml_append(dev, aml_name_decl("_STA", aml_int(0xf)));
aml_append(dev, aml_name_decl("_UID", aml_int(1)));
tpm_build_ppi_acpi(tpm, dev);
aml_append(sb_scope, dev);
}
#endif
if (pcms->sgx_epc.size != 0) {
uint64_t epc_base = pcms->sgx_epc.base;
uint64_t epc_size = pcms->sgx_epc.size;
dev = aml_device("EPC");
aml_append(dev, aml_name_decl("_HID", aml_eisaid("INT0E0C")));
aml_append(dev, aml_name_decl("_STR",
aml_unicode("Enclave Page Cache 1.0")));
crs = aml_resource_template();
aml_append(crs,
aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED,
AML_MAX_FIXED, AML_NON_CACHEABLE,
AML_READ_WRITE, 0, epc_base,
epc_base + epc_size - 1, 0, epc_size));
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);
acpi_table_end(linker, &table);
free_aml_allocator();
}
/*
* IA-PC HPET (High Precision Event Timers) Specification (Revision: 1.0a)
* 3.2.4The ACPI 2.0 HPET Description Table (HPET)
*/
static void
build_hpet(GArray *table_data, BIOSLinker *linker, const char *oem_id,
const char *oem_table_id)
{
AcpiTable table = { .sig = "HPET", .rev = 1,
.oem_id = oem_id, .oem_table_id = oem_table_id };
acpi_table_begin(&table, table_data);
/* Note timer_block_id value must be kept in sync with value advertised by
* emulated hpet
*/
/* Event Timer Block ID */
build_append_int_noprefix(table_data, 0x8086a201, 4);
/* BASE_ADDRESS */
build_append_gas(table_data, AML_AS_SYSTEM_MEMORY, 0, 0, 0, HPET_BASE);
/* HPET Number */
build_append_int_noprefix(table_data, 0, 1);
/* Main Counter Minimum Clock_tick in Periodic Mode */
build_append_int_noprefix(table_data, 0, 2);
/* Page Protection And OEM Attribute */
build_append_int_noprefix(table_data, 0, 1);
acpi_table_end(linker, &table);
}
#ifdef CONFIG_TPM
/*
* TCPA Description Table
*
* Following Level 00, Rev 00.37 of specs:
* http://www.trustedcomputinggroup.org/resources/tcg_acpi_specification
* 7.1.2 ACPI Table Layout
*/
static void
build_tpm_tcpa(GArray *table_data, BIOSLinker *linker, GArray *tcpalog,
const char *oem_id, const char *oem_table_id)
{
unsigned log_addr_offset;
AcpiTable table = { .sig = "TCPA", .rev = 2,
.oem_id = oem_id, .oem_table_id = oem_table_id };
acpi_table_begin(&table, table_data);
/* Platform Class */
build_append_int_noprefix(table_data, TPM_TCPA_ACPI_CLASS_CLIENT, 2);
/* Log Area Minimum Length (LAML) */
build_append_int_noprefix(table_data, TPM_LOG_AREA_MINIMUM_SIZE, 4);
/* Log Area Start Address (LASA) */
log_addr_offset = table_data->len;
build_append_int_noprefix(table_data, 0, 8);
/* allocate/reserve space for TPM log area */
acpi_data_push(tcpalog, TPM_LOG_AREA_MINIMUM_SIZE);
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, 8, ACPI_BUILD_TPMLOG_FILE, 0);
acpi_table_end(linker, &table);
}
#endif
#define HOLE_640K_START (640 * KiB)
#define HOLE_640K_END (1 * MiB)
/*
* ACPI spec, Revision 3.0
* 5.2.15 System Resource Affinity Table (SRAT)
*/
static void
build_srat(GArray *table_data, BIOSLinker *linker, MachineState *machine)
{
int i;
int numa_mem_start, slots;
uint64_t mem_len, mem_base, next_base;
MachineClass *mc = MACHINE_GET_CLASS(machine);
X86MachineState *x86ms = X86_MACHINE(machine);
const CPUArchIdList *apic_ids = mc->possible_cpu_arch_ids(machine);
PCMachineState *pcms = PC_MACHINE(machine);
int nb_numa_nodes = machine->numa_state->num_nodes;
NodeInfo *numa_info = machine->numa_state->nodes;
ram_addr_t hotpluggable_address_space_size =
object_property_get_int(OBJECT(pcms), PC_MACHINE_DEVMEM_REGION_SIZE,
NULL);
AcpiTable table = { .sig = "SRAT", .rev = 1, .oem_id = x86ms->oem_id,
.oem_table_id = x86ms->oem_table_id };
acpi_table_begin(&table, table_data);
build_append_int_noprefix(table_data, 1, 4); /* Reserved */
build_append_int_noprefix(table_data, 0, 8); /* Reserved */
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) {
/* 5.2.15.1 Processor Local APIC/SAPIC Affinity Structure */
build_append_int_noprefix(table_data, 0, 1); /* Type */
build_append_int_noprefix(table_data, 16, 1); /* Length */
/* Proximity Domain [7:0] */
build_append_int_noprefix(table_data, node_id, 1);
build_append_int_noprefix(table_data, apic_id, 1); /* APIC ID */
/* Flags, Table 5-36 */
build_append_int_noprefix(table_data, 1, 4);
build_append_int_noprefix(table_data, 0, 1); /* Local SAPIC EID */
/* Proximity Domain [31:8] */
build_append_int_noprefix(table_data, 0, 3);
build_append_int_noprefix(table_data, 0, 4); /* Reserved */
} else {
/*
* ACPI spec, Revision 4.0
* 5.2.16.3 Processor Local x2APIC Affinity Structure
*/
build_append_int_noprefix(table_data, 2, 1); /* Type */
build_append_int_noprefix(table_data, 24, 1); /* Length */
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
/* Proximity Domain */
build_append_int_noprefix(table_data, node_id, 4);
build_append_int_noprefix(table_data, apic_id, 4); /* X2APIC ID */
/* Flags, Table 5-39 */
build_append_int_noprefix(table_data, 1 /* Enabled */, 4);
build_append_int_noprefix(table_data, 0, 4); /* Clock Domain */
build_append_int_noprefix(table_data, 0, 4); /* Reserved */
}
}
/* 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_mem_start = table_data->len;
for (i = 1; i < nb_numa_nodes + 1; ++i) {
mem_base = next_base;
mem_len = numa_info[i - 1].node_mem;
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) {
build_srat_memory(table_data, 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 <= x86ms->below_4g_mem_size &&
next_base > x86ms->below_4g_mem_size) {
mem_len -= next_base - x86ms->below_4g_mem_size;
if (mem_len > 0) {
build_srat_memory(table_data, mem_base, mem_len, i - 1,
MEM_AFFINITY_ENABLED);
}
mem_base = x86ms->above_4g_mem_start;
mem_len = next_base - x86ms->below_4g_mem_size;
next_base = mem_base + mem_len;
}
if (mem_len > 0) {
build_srat_memory(table_data, mem_base, mem_len, i - 1,
MEM_AFFINITY_ENABLED);
}
}
if (machine->nvdimms_state->is_enabled) {
nvdimm_build_srat(table_data);
}
sgx_epc_build_srat(table_data);
/*
* TODO: this part is not in ACPI spec and current linux kernel boots fine
* without these entries. But I recall there were issues the last time I
* tried to remove it with some ancient guest OS, however I can't remember
* what that was so keep this around for now
*/
slots = (table_data->len - numa_mem_start) / 40 /* mem affinity len */;
for (; slots < nb_numa_nodes + 2; slots++) {
build_srat_memory(table_data, 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 (hotpluggable_address_space_size) {
build_srat_memory(table_data, machine->device_memory->base,
hotpluggable_address_space_size, nb_numa_nodes - 1,
MEM_AFFINITY_HOTPLUGGABLE | MEM_AFFINITY_ENABLED);
}
acpi_table_end(linker, &table);
}
/*
* Insert DMAR scope for PCI bridges and endpoint devcie
*/
static void
insert_scope(PCIBus *bus, PCIDevice *dev, void *opaque)
{
const size_t device_scope_size = 6 /* device scope structure */ +
2 /* 1 path entry */;
GArray *scope_blob = opaque;
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) {
/* Dmar Scope Type: 0x02 for PCI Bridge */
build_append_int_noprefix(scope_blob, 0x02, 1);
} else {
/* Dmar Scope Type: 0x01 for PCI Endpoint Device */
build_append_int_noprefix(scope_blob, 0x01, 1);
}
/* length */
build_append_int_noprefix(scope_blob, device_scope_size, 1);
/* reserved */
build_append_int_noprefix(scope_blob, 0, 2);
/* enumeration_id */
build_append_int_noprefix(scope_blob, 0, 1);
/* bus */
build_append_int_noprefix(scope_blob, pci_bus_num(bus), 1);
/* device */
build_append_int_noprefix(scope_blob, PCI_SLOT(dev->devfn), 1);
/* function */
build_append_int_noprefix(scope_blob, PCI_FUNC(dev->devfn), 1);
}
/* For a given PCI host bridge, walk and insert DMAR scope */
static int
dmar_host_bridges(Object *obj, void *opaque)
{
GArray *scope_blob = opaque;
if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) {
PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus;
if (bus && !pci_bus_bypass_iommu(bus)) {
pci_for_each_device_under_bus(bus, insert_scope, scope_blob);
}
}
return 0;
}
/*
* Intel ® Virtualization Technology for Directed I/O
* Architecture Specification. Revision 3.3
* 8.1 DMA Remapping Reporting Structure
*/
static void
build_dmar_q35(GArray *table_data, BIOSLinker *linker, const char *oem_id,
const char *oem_table_id)
{
uint8_t dmar_flags = 0;
uint8_t rsvd10[10] = {};
/* Root complex IOAPIC uses one path only */
const size_t ioapic_scope_size = 6 /* device scope structure */ +
2 /* 1 path entry */;
X86IOMMUState *iommu = x86_iommu_get_default();
IntelIOMMUState *intel_iommu = INTEL_IOMMU_DEVICE(iommu);
GArray *scope_blob = g_array_new(false, true, 1);
AcpiTable table = { .sig = "DMAR", .rev = 1, .oem_id = oem_id,
.oem_table_id = oem_table_id };
/*
* A PCI bus walk, for each PCI host bridge.
* Insert scope for each PCI bridge and endpoint device which
* is attached to a bus with iommu enabled.
*/
object_child_foreach_recursive(object_get_root(),
dmar_host_bridges, scope_blob);
assert(iommu);
if (x86_iommu_ir_supported(iommu)) {
dmar_flags |= 0x1; /* Flags: 0x1: INT_REMAP */
}
acpi_table_begin(&table, table_data);
/* Host Address Width */
build_append_int_noprefix(table_data, intel_iommu->aw_bits - 1, 1);
build_append_int_noprefix(table_data, dmar_flags, 1); /* Flags */
g_array_append_vals(table_data, rsvd10, sizeof(rsvd10)); /* Reserved */
/* 8.3 DMAR Remapping Hardware Unit Definition structure */
build_append_int_noprefix(table_data, 0, 2); /* Type */
/* Length */
build_append_int_noprefix(table_data,
16 + ioapic_scope_size + scope_blob->len, 2);
/* Flags */
build_append_int_noprefix(table_data, 0 /* Don't include all pci device */ ,
1);
build_append_int_noprefix(table_data, 0 , 1); /* Reserved */
build_append_int_noprefix(table_data, 0 , 2); /* Segment Number */
/* Register Base Address */
build_append_int_noprefix(table_data, Q35_HOST_BRIDGE_IOMMU_ADDR , 8);
/* Scope definition for the root-complex IOAPIC. See VT-d spec
* 8.3.1 (version Oct. 2014 or later). */
build_append_int_noprefix(table_data, 0x03 /* IOAPIC */, 1); /* Type */
build_append_int_noprefix(table_data, ioapic_scope_size, 1); /* Length */
build_append_int_noprefix(table_data, 0, 2); /* Reserved */
/* Enumeration ID */
build_append_int_noprefix(table_data, ACPI_BUILD_IOAPIC_ID, 1);
/* Start Bus Number */
build_append_int_noprefix(table_data, Q35_PSEUDO_BUS_PLATFORM, 1);
/* Path, {Device, Function} pair */
build_append_int_noprefix(table_data, PCI_SLOT(Q35_PSEUDO_DEVFN_IOAPIC), 1);
build_append_int_noprefix(table_data, PCI_FUNC(Q35_PSEUDO_DEVFN_IOAPIC), 1);
/* Add scope found above */
g_array_append_vals(table_data, scope_blob->data, scope_blob->len);
g_array_free(scope_blob, true);
if (iommu->dt_supported) {
/* 8.5 Root Port ATS Capability Reporting Structure */
build_append_int_noprefix(table_data, 2, 2); /* Type */
build_append_int_noprefix(table_data, 8, 2); /* Length */
build_append_int_noprefix(table_data, 1 /* ALL_PORTS */, 1); /* Flags */
build_append_int_noprefix(table_data, 0, 1); /* Reserved */
build_append_int_noprefix(table_data, 0, 2); /* Segment Number */
}
acpi_table_end(linker, &table);
}
/*
* Windows ACPI Emulated Devices Table
* (Version 1.0 - April 6, 2009)
* Spec: http://download.microsoft.com/download/7/E/7/7E7662CF-CBEA-470B-A97E-CE7CE0D98DC2/WAET.docx
*
* Helpful to speedup Windows guests and ignored by others.
*/
static void
build_waet(GArray *table_data, BIOSLinker *linker, const char *oem_id,
const char *oem_table_id)
{
AcpiTable table = { .sig = "WAET", .rev = 1, .oem_id = oem_id,
.oem_table_id = oem_table_id };
acpi_table_begin(&table, table_data);
/*
* Set "ACPI PM timer good" flag.
*
* Tells Windows guests that our ACPI PM timer is reliable in the
* sense that guest can read it only once to obtain a reliable value.
* Which avoids costly VMExits caused by guest re-reading it unnecessarily.
*/
build_append_int_noprefix(table_data, 1 << 1 /* ACPI PM timer good */, 4);
acpi_table_end(linker, &table);
}
/*
* IVRS table as specified in AMD IOMMU Specification v2.62, Section 5.2
* accessible here http://support.amd.com/TechDocs/48882_IOMMU.pdf
*/
#define IOAPIC_SB_DEVID (uint64_t)PCI_BUILD_BDF(0, PCI_DEVFN(0x14, 0))
/*
* Insert IVHD entry for device and recurse, insert alias, or insert range as
* necessary for the PCI topology.
*/
static void
insert_ivhd(PCIBus *bus, PCIDevice *dev, void *opaque)
{
GArray *table_data = opaque;
uint32_t entry;
/* "Select" IVHD entry, type 0x2 */
entry = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn) << 8 | 0x2;
build_append_int_noprefix(table_data, entry, 4);
if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) {
PCIBus *sec_bus = pci_bridge_get_sec_bus(PCI_BRIDGE(dev));
uint8_t sec = pci_bus_num(sec_bus);
uint8_t sub = dev->config[PCI_SUBORDINATE_BUS];
if (pci_bus_is_express(sec_bus)) {
/*
* Walk the bus if there are subordinates, otherwise use a range
* to cover an entire leaf bus. We could potentially also use a
* range for traversed buses, but we'd need to take care not to
* create both Select and Range entries covering the same device.
* This is easier and potentially more compact.
*
* An example bare metal system seems to use Select entries for
* root ports without a slot (ie. built-ins) and Range entries
* when there is a slot. The same system also only hard-codes
* the alias range for an onboard PCIe-to-PCI bridge, apparently
* making no effort to support nested bridges. We attempt to
* be more thorough here.
*/
if (sec == sub) { /* leaf bus */
/* "Start of Range" IVHD entry, type 0x3 */
entry = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0)) << 8 | 0x3;
build_append_int_noprefix(table_data, entry, 4);
/* "End of Range" IVHD entry, type 0x4 */
entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4;
build_append_int_noprefix(table_data, entry, 4);
} else {
pci_for_each_device(sec_bus, sec, insert_ivhd, table_data);
}
} else {
/*
* If the secondary bus is conventional, then we need to create an
* Alias range for everything downstream. The range covers the
* first devfn on the secondary bus to the last devfn on the
* subordinate bus. The alias target depends on legacy versus
* express bridges, just as in pci_device_iommu_address_space().
* DeviceIDa vs DeviceIDb as per the AMD IOMMU spec.
*/
uint16_t dev_id_a, dev_id_b;
dev_id_a = PCI_BUILD_BDF(sec, PCI_DEVFN(0, 0));
if (pci_is_express(dev) &&
pcie_cap_get_type(dev) == PCI_EXP_TYPE_PCI_BRIDGE) {
dev_id_b = dev_id_a;
} else {
dev_id_b = PCI_BUILD_BDF(pci_bus_num(bus), dev->devfn);
}
/* "Alias Start of Range" IVHD entry, type 0x43, 8 bytes */
build_append_int_noprefix(table_data, dev_id_a << 8 | 0x43, 4);
build_append_int_noprefix(table_data, dev_id_b << 8 | 0x0, 4);
/* "End of Range" IVHD entry, type 0x4 */
entry = PCI_BUILD_BDF(sub, PCI_DEVFN(31, 7)) << 8 | 0x4;
build_append_int_noprefix(table_data, entry, 4);
}
}
}
/* For all PCI host bridges, walk and insert IVHD entries */
static int
ivrs_host_bridges(Object *obj, void *opaque)
{
GArray *ivhd_blob = opaque;
if (object_dynamic_cast(obj, TYPE_PCI_HOST_BRIDGE)) {
PCIBus *bus = PCI_HOST_BRIDGE(obj)->bus;
if (bus && !pci_bus_bypass_iommu(bus)) {
pci_for_each_device_under_bus(bus, insert_ivhd, ivhd_blob);
}
}
return 0;
}
static void
build_amd_iommu(GArray *table_data, BIOSLinker *linker, const char *oem_id,
const char *oem_table_id)
{
int ivhd_table_len = 24;
AMDVIState *s = AMD_IOMMU_DEVICE(x86_iommu_get_default());
GArray *ivhd_blob = g_array_new(false, true, 1);
AcpiTable table = { .sig = "IVRS", .rev = 1, .oem_id = oem_id,
.oem_table_id = oem_table_id };
acpi_table_begin(&table, table_data);
/* 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);
/*
* A PCI bus walk, for each PCI host bridge, is necessary to create a
* complete set of IVHD entries. Do this into a separate blob so that we
* can calculate the total IVRS table length here and then append the new
* blob further below. Fall back to an entry covering all devices, which
* is sufficient when no aliases are present.
*/
object_child_foreach_recursive(object_get_root(),
ivrs_host_bridges, ivhd_blob);
if (!ivhd_blob->len) {
/*
* 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(ivhd_blob, 0x0000001, 4);
}
ivhd_table_len += ivhd_blob->len;
/*
* When interrupt remapping is supported, we add a special IVHD device
* for type IO-APIC.
*/
if (x86_iommu_ir_supported(x86_iommu_get_default())) {
ivhd_table_len += 8;
}
/* IVHD length */
build_append_int_noprefix(table_data, ivhd_table_len, 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 */
(1UL << 6), /* GASup */
4);
/* IVHD entries as found above */
g_array_append_vals(table_data, ivhd_blob->data, ivhd_blob->len);
g_array_free(ivhd_blob, TRUE);
/*
* Add a special IVHD device type.
* Refer to spec - Table 95: IVHD device entry type codes
*
* Linux IOMMU driver checks for the special IVHD device (type IO-APIC).
* See Linux kernel commit 'c2ff5cf5294bcbd7fa50f7d860e90a66db7e5059'
*/
if (x86_iommu_ir_supported(x86_iommu_get_default())) {
build_append_int_noprefix(table_data,
(0x1ull << 56) | /* type IOAPIC */
(IOAPIC_SB_DEVID << 40) | /* IOAPIC devid */
0x48, /* special device */
8);
}
acpi_table_end(linker, &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();
if (!pci_host) {
return false;
}
o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_BASE, NULL);
if (!o) {
return false;
}
mcfg->base = qnum_get_uint(qobject_to(QNum, o));
qobject_unref(o);
if (mcfg->base == PCIE_BASE_ADDR_UNMAPPED) {
return false;
}
o = object_property_get_qobject(pci_host, PCIE_HOST_MCFG_SIZE, NULL);
assert(o);
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);
X86MachineState *x86ms = X86_MACHINE(machine);
DeviceState *iommu = pcms->iommu;
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;
char *oem_id;
char *oem_table_id;
acpi_get_pm_info(machine, &pm);
acpi_get_misc_info(&misc);
acpi_get_pci_holes(&pci_hole, &pci_hole64);
acpi_get_slic_oem(&slic_oem);
if (slic_oem.id) {
oem_id = slic_oem.id;
} else {
oem_id = x86ms->oem_id;
}
if (slic_oem.table_id) {
oem_table_id = slic_oem.table_id;
} else {
oem_table_id = x86ms->oem_table_id;
}
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);
/* 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, oem_id, oem_table_id);
aml_len += tables_blob->len - fadt;
acpi_add_table(table_offsets, tables_blob);
acpi_build_madt(tables_blob, tables->linker, x86ms,
ACPI_DEVICE_IF(x86ms->acpi_dev), x86ms->oem_id,
x86ms->oem_table_id);
#ifdef CONFIG_ACPI_ERST
{
Object *erst_dev;
erst_dev = find_erst_dev();
if (erst_dev) {
acpi_add_table(table_offsets, tables_blob);
build_erst(tables_blob, tables->linker, erst_dev,
x86ms->oem_id, x86ms->oem_table_id);
}
}
#endif
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, x86ms->oem_id);
}
if (misc.has_hpet) {
acpi_add_table(table_offsets, tables_blob);
build_hpet(tables_blob, tables->linker, x86ms->oem_id,
x86ms->oem_table_id);
}
#ifdef CONFIG_TPM
if (misc.tpm_version != TPM_VERSION_UNSPEC) {
if (misc.tpm_version == TPM_VERSION_1_2) {
acpi_add_table(table_offsets, tables_blob);
build_tpm_tcpa(tables_blob, tables->linker, tables->tcpalog,
x86ms->oem_id, x86ms->oem_table_id);
} else { /* TPM_VERSION_2_0 */
acpi_add_table(table_offsets, tables_blob);
build_tpm2(tables_blob, tables->linker, tables->tcpalog,
x86ms->oem_id, x86ms->oem_table_id);
}
}
#endif
if (machine->numa_state->num_nodes) {
acpi_add_table(table_offsets, tables_blob);
build_srat(tables_blob, tables->linker, machine);
if (machine->numa_state->have_numa_distance) {
acpi_add_table(table_offsets, tables_blob);
build_slit(tables_blob, tables->linker, machine, x86ms->oem_id,
x86ms->oem_table_id);
}
if (machine->numa_state->hmat_enabled) {
acpi_add_table(table_offsets, tables_blob);
build_hmat(tables_blob, tables->linker, machine->numa_state,
x86ms->oem_id, x86ms->oem_table_id);
}
}
if (acpi_get_mcfg(&mcfg)) {
acpi_add_table(table_offsets, tables_blob);
build_mcfg(tables_blob, tables->linker, &mcfg, x86ms->oem_id,
x86ms->oem_table_id);
}
if (object_dynamic_cast(OBJECT(iommu), TYPE_AMD_IOMMU_DEVICE)) {
acpi_add_table(table_offsets, tables_blob);
build_amd_iommu(tables_blob, tables->linker, x86ms->oem_id,
x86ms->oem_table_id);
} else if (object_dynamic_cast(OBJECT(iommu), TYPE_INTEL_IOMMU_DEVICE)) {
acpi_add_table(table_offsets, tables_blob);
build_dmar_q35(tables_blob, tables->linker, x86ms->oem_id,
x86ms->oem_table_id);
} else if (object_dynamic_cast(OBJECT(iommu), TYPE_VIRTIO_IOMMU_PCI)) {
PCIDevice *pdev = PCI_DEVICE(iommu);
acpi_add_table(table_offsets, tables_blob);
build_viot(machine, tables_blob, tables->linker, pci_get_bdf(pdev),
x86ms->oem_id, x86ms->oem_table_id);
}
if (machine->nvdimms_state->is_enabled) {
nvdimm_build_acpi(table_offsets, tables_blob, tables->linker,
machine->nvdimms_state, machine->ram_slots,
x86ms->oem_id, x86ms->oem_table_id);
}
if (pcms->cxl_devices_state.is_enabled) {
cxl_build_cedt(table_offsets, tables_blob, tables->linker,
x86ms->oem_id, x86ms->oem_table_id, &pcms->cxl_devices_state);
}
acpi_add_table(table_offsets, tables_blob);
build_waet(tables_blob, tables->linker, x86ms->oem_id, x86ms->oem_table_id);
/* 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,
oem_id, oem_table_id);
/* RSDP is in FSEG memory, so allocate it separately */
{
AcpiRsdpData rsdp_data = {
.revision = 0,
.oem_id = x86ms->oem_id,
.xsdt_tbl_offset = NULL,
.rsdt_tbl_offset = &rsdt,
};
build_rsdp(tables->rsdp, tables->linker, &rsdp_data);
if (!pcmc->rsdp_in_ram) {
/* We used to allocate some extra space for RSDP revision 2 but
* only used the RSDP revision 0 space. The extra bytes were
* zeroed out and not used.
* Here we continue wasting those extra 16 bytes to make sure we
* don't break migration for machine types 2.2 and older due to
* RSDP blob size mismatch.
*/
build_append_int_noprefix(tables->rsdp, 0, 16);
}
}
/* 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 * x86ms->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);
g_free(slic_oem.id);
g_free(slic_oem.table_id);
}
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 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);
X86MachineState *x86ms = X86_MACHINE(pcms);
AcpiBuildTables tables;
AcpiBuildState *build_state;
Object *vmgenid_dev;
#ifdef CONFIG_TPM
TPMIf *tpm;
static FwCfgTPMConfig tpm_config;
#endif
if (!x86ms->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 (!x86_machine_is_acpi_enabled(X86_MACHINE(pcms))) {
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(acpi_build_update,
build_state, tables.table_data,
ACPI_BUILD_TABLE_FILE);
assert(build_state->table_mr != NULL);
build_state->linker_mr =
acpi_add_rom_blob(acpi_build_update, build_state,
tables.linker->cmd_blob, ACPI_BUILD_LOADER_FILE);
#ifdef CONFIG_TPM
fw_cfg_add_file(x86ms->fw_cfg, ACPI_BUILD_TPMLOG_FILE,
tables.tcpalog->data, acpi_data_len(tables.tcpalog));
tpm = tpm_find();
if (tpm && object_property_get_bool(OBJECT(tpm), "ppi", &error_abort)) {
tpm_config = (FwCfgTPMConfig) {
.tpmppi_address = cpu_to_le32(TPM_PPI_ADDR_BASE),
.tpm_version = tpm_get_version(tpm),
.tpmppi_version = TPM_PPI_VERSION_1_30
};
fw_cfg_add_file(x86ms->fw_cfg, "etc/tpm/config",
&tpm_config, sizeof tpm_config);
}
#endif
vmgenid_dev = find_vmgenid_dev();
if (vmgenid_dev) {
vmgenid_add_fw_cfg(VMGENID(vmgenid_dev), x86ms->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(x86ms->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(acpi_build_update,
build_state, tables.rsdp,
ACPI_BUILD_RSDP_FILE);
}
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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