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qemu/hw/i386/acpi-build.c
Ben Widawsky 3d6a69b6eb acpi/cxl: Create the CEDT (9.14.1) 
The CXL Early Discovery Table is defined in the CXL 2.0 specification as
a way for the OS to get CXL specific information from the system
firmware.

CXL 2.0 specification adds an _HID, ACPI0016, for CXL capable host
bridges, with a _CID of PNP0A08 (PCIe host bridge). CXL aware software
is able to use this initiate the proper _OSC method, and get the _UID
which is referenced by the CEDT. Therefore the existence of an ACPI0016
device allows a CXL aware driver perform the necessary actions. For a
CXL capable OS, this works. For a CXL unaware OS, this works.

CEDT awaremess requires more. The motivation for ACPI0017 is to provide
the possibility of having a Linux CXL module that can work on a legacy
Linux kernel. Linux core PCI/ACPI which won't be built as a module,
will see the _CID of PNP0A08 and bind a driver to it. If we later loaded
a driver for ACPI0016, Linux won't be able to bind it to the hardware
because it has already bound the PNP0A08 driver. The ACPI0017 device is
an opportunity to have an object to bind a driver will be used by a
Linux driver to walk the CXL topology and do everything that we would
have preferred to do with ACPI0016.

There is another motivation for an ACPI0017 device which isn't
implemented here. An operating system needs an attach point for a
non-volatile region provider that understands cross-hostbridge
interleaving. Since QEMU emulation doesn't support interleaving yet,
this is more important on the OS side, for now.

As of CXL 2.0 spec, only 1 sub structure is defined, the CXL Host Bridge
Structure (CHBS) which is primarily useful for telling the OS exactly
where the MMIO for the host bridge is.

Link: https://lore.kernel.org/linux-cxl/20210115034911.nkgpzc756d6qmjpl@intel.com/T/#t
Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220429144110.25167-26-Jonathan.Cameron@huawei.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-05-13 06:13:36 -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 "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/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/isa/isa.h"
#include "hw/input/i8042.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 "hw/acpi/erst.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/ipmi.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;
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;
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
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.
*/
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 */
}
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 hotplug_enabled_dev;
bool bridge_in_acpi;
bool cold_plugged_bridge;
if (!pdev) {
/*
* add hotplug slots for non present devices.
* 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;
}
dev = aml_device("S%.02X", devfn);
aml_append(dev, aml_name_decl("_SUN", aml_int(slot)));
aml_append(dev, aml_name_decl("_ADR", aml_int(adr)));
method = aml_method("_EJ0", 1, AML_NOTSERIALIZED);
aml_append(method,
aml_call2("PCEJ", aml_name("BSEL"), aml_name("_SUN"))
);
aml_append(dev, method);
method = aml_method("_DSM", 4, AML_SERIALIZED);
aml_append(method,
aml_return(aml_call6("PDSM", aml_arg(0), aml_arg(1),
aml_arg(2), aml_arg(3),
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);
/*
* 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;
hotplug_enabled_dev = bsel && dc->hotpluggable && !cold_plugged_bridge;
if (pc->class_id == PCI_CLASS_BRIDGE_ISA) {
continue;
}
/*
* 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;
}
/* 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)));
method = aml_method("_DSM", 4, AML_SERIALIZED);
aml_append(method, aml_return(
aml_call6("PDSM", aml_arg(0), aml_arg(1), aml_arg(2),
aml_arg(3), aml_name("BSEL"), aml_name("ASUN"))
));
aml_append(dev, method);
}
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) {
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);
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);
}
/* 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);
}
Aml *aml_pci_device_dsm(void)
{
Aml *method, *UUID, *ifctx, *ifctx1, *ifctx2, *ifctx3, *elsectx;
Aml *acpi_index = aml_local(0);
Aml *zero = aml_int(0);
Aml *bnum = aml_arg(4);
Aml *func = aml_arg(2);
Aml *rev = aml_arg(1);
Aml *sunum = aml_arg(5);
method = aml_method("PDSM", 6, AML_SERIALIZED);
/*
* PCI Firmware Specification 3.1
* 4.6. _DSM Definitions for PCI
*/
UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
ifctx = aml_if(aml_equal(aml_arg(0), UUID));
{
aml_append(ifctx, aml_store(aml_call2("AIDX", bnum, sunum), acpi_index));
ifctx1 = aml_if(aml_equal(func, zero));
{
uint8_t byte_list[1];
ifctx2 = aml_if(aml_equal(rev, aml_int(2)));
{
/*
* 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
*/
ifctx3 = aml_if(aml_lnot(
aml_or(aml_equal(acpi_index, zero),
aml_equal(acpi_index, aml_int(0xFFFFFFFF)), NULL)
));
{
byte_list[0] =
1 /* have supported functions */ |
1 << 7 /* support for function 7 */
;
aml_append(ifctx3, aml_return(aml_buffer(1, byte_list)));
}
aml_append(ifctx2, ifctx3);
}
aml_append(ifctx1, ifctx2);
byte_list[0] = 0; /* nothing supported */
aml_append(ifctx1, aml_return(aml_buffer(1, byte_list)));
}
aml_append(ifctx, ifctx1);
elsectx = aml_else();
/*
* PCI Firmware Specification 3.1
* 4.6.7. _DSM for Naming a PCI or PCI Express Device Under
* Operating Systems
*/
ifctx1 = aml_if(aml_equal(func, aml_int(7)));
{
Aml *pkg = aml_package(2);
Aml *ret = aml_local(1);
aml_append(pkg, zero);
/*
* optional, if not impl. should return null string
*/
aml_append(pkg, aml_string("%s", ""));
aml_append(ifctx1, aml_store(pkg, ret));
/*
* update acpi-index to actual value
*/
aml_append(ifctx1, aml_store(acpi_index, aml_index(ret, zero)));
aml_append(ifctx1, aml_return(ret));
}
aml_append(elsectx, ifctx1);
aml_append(ifctx, elsectx);
}
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_isa_devices_aml(Aml *table)
{
bool ambiguous;
Object *obj = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous);
Aml *scope;
assert(obj && !ambiguous);
scope = aml_scope("_SB.PCI0.ISA");
build_acpi_ipmi_devices(scope, BUS(obj), "\\_SB.PCI0.ISA");
isa_build_aml(ISA_BUS(obj), scope);
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 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_q35_isa_bridge(Aml *table)
{
Aml *dev;
Aml *scope;
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(scope, dev);
aml_append(table, scope);
}
static void build_piix4_isa_bridge(Aml *table)
{
Aml *dev;
Aml *scope;
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));
aml_append(scope, dev);
aml_append(table, scope);
}
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_device_dsm());
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, I2CBus *smbus, int devnr, int func)
{
Aml *scope = aml_scope("_SB.PCI0");
Aml *dev = aml_device("SMB0");
aml_append(dev, aml_name_decl("_ADR", aml_int(devnr << 16 | func)));
build_acpi_ipmi_devices(dev, BUS(smbus), "\\_SB.PCI0.SMB0");
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 (misc->has_hpet) {
build_hpet_aml(dsdt);
}
build_piix4_isa_bridge(dsdt);
build_isa_devices_aml(dsdt);
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 (misc->has_hpet) {
build_hpet_aml(dsdt);
}
build_q35_isa_bridge(dsdt);
build_isa_devices_aml(dsdt);
if (pm->pcihp_bridge_en) {
build_x86_acpi_pci_hotplug(dsdt, pm->pcihp_io_base);
}
build_q35_pci0_int(dsdt);
if (pcms->smbus && !pcmc->do_not_add_smb_acpi) {
build_smb0(dsdt, pcms->smbus, ICH9_SMB_DEV, ICH9_SMB_FUNC);
}
}
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 = &machine->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);
}
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);
#ifdef CONFIG_TPM
if (TPM_IS_TIS_ISA(tpm)) {
if (misc->tpm_version == TPM_VERSION_2_0) {
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")));
} else {
dev = aml_device("ISA.TPM");
aml_append(dev, aml_name_decl("_HID",
aml_eisaid("PNP0C31")));
}
aml_append(dev, aml_name_decl("_UID", aml_int(1)));
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));
tpm_build_ppi_acpi(tpm, dev);
aml_append(scope, dev);
}
#endif
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 = 1ULL << 32;
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 (machine->cxl_devices_state->is_enabled) {
cxl_build_cedt(machine, table_offsets, tables_blob, tables->linker,
x86ms->oem_id, x86ms->oem_table_id);
}
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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