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qemu/hw/arm/virt-acpi-build.c
Eric Auger 601d626d14 hw/arm/virt: Add a new 256MB ECAM region 
This patch defines a new ECAM region located after the 256GB limit.

The virt machine state is augmented with a new highmem_ecam field
which guards the usage of this new ECAM region instead of the legacy
16MB one. With the highmem ECAM region, up to 256 PCIe buses can be
used.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Message-id: 1529072910-16156-9-git-send-email-eric.auger@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-06-22 13:28:37 +01:00

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/* Support for generating ACPI tables and passing them to Guests
*
* ARM virt ACPI generation
*
* 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>
*
* Copyright (c) 2015 HUAWEI TECHNOLOGIES CO.,LTD.
*
* Author: Shannon Zhao <zhaoshenglong@huawei.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 "qemu-common.h"
#include "qemu/bitmap.h"
#include "trace.h"
#include "qom/cpu.h"
#include "target/arm/cpu.h"
#include "hw/acpi/acpi-defs.h"
#include "hw/acpi/acpi.h"
#include "hw/nvram/fw_cfg.h"
#include "hw/acpi/bios-linker-loader.h"
#include "hw/loader.h"
#include "hw/hw.h"
#include "hw/acpi/aml-build.h"
#include "hw/pci/pcie_host.h"
#include "hw/pci/pci.h"
#include "hw/arm/virt.h"
#include "sysemu/numa.h"
#include "kvm_arm.h"
#define ARM_SPI_BASE 32
#define ACPI_POWER_BUTTON_DEVICE "PWRB"
static void acpi_dsdt_add_cpus(Aml *scope, int smp_cpus)
{
uint16_t i;
for (i = 0; i < smp_cpus; i++) {
Aml *dev = aml_device("C%.03X", i);
aml_append(dev, aml_name_decl("_HID", aml_string("ACPI0007")));
aml_append(dev, aml_name_decl("_UID", aml_int(i)));
aml_append(scope, dev);
}
}
static void acpi_dsdt_add_uart(Aml *scope, const MemMapEntry *uart_memmap,
uint32_t uart_irq)
{
Aml *dev = aml_device("COM0");
aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0011")));
aml_append(dev, aml_name_decl("_UID", aml_int(0)));
Aml *crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(uart_memmap->base,
uart_memmap->size, AML_READ_WRITE));
aml_append(crs,
aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, &uart_irq, 1));
aml_append(dev, aml_name_decl("_CRS", crs));
/* The _ADR entry is used to link this device to the UART described
* in the SPCR table, i.e. SPCR.base_address.address == _ADR.
*/
aml_append(dev, aml_name_decl("_ADR", aml_int(uart_memmap->base)));
aml_append(scope, dev);
}
static void acpi_dsdt_add_fw_cfg(Aml *scope, const MemMapEntry *fw_cfg_memmap)
{
Aml *dev = aml_device("FWCF");
aml_append(dev, aml_name_decl("_HID", aml_string("QEMU0002")));
/* device present, functioning, decoding, not shown in UI */
aml_append(dev, aml_name_decl("_STA", aml_int(0xB)));
aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
Aml *crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(fw_cfg_memmap->base,
fw_cfg_memmap->size, AML_READ_WRITE));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
static void acpi_dsdt_add_flash(Aml *scope, const MemMapEntry *flash_memmap)
{
Aml *dev, *crs;
hwaddr base = flash_memmap->base;
hwaddr size = flash_memmap->size / 2;
dev = aml_device("FLS0");
aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
aml_append(dev, aml_name_decl("_UID", aml_int(0)));
crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
dev = aml_device("FLS1");
aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0015")));
aml_append(dev, aml_name_decl("_UID", aml_int(1)));
crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(base + size, size, AML_READ_WRITE));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
}
static void acpi_dsdt_add_virtio(Aml *scope,
const MemMapEntry *virtio_mmio_memmap,
uint32_t mmio_irq, int num)
{
hwaddr base = virtio_mmio_memmap->base;
hwaddr size = virtio_mmio_memmap->size;
int i;
for (i = 0; i < num; i++) {
uint32_t irq = mmio_irq + i;
Aml *dev = aml_device("VR%02u", i);
aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
aml_append(dev, aml_name_decl("_UID", aml_int(i)));
aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
Aml *crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
aml_append(crs,
aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, &irq, 1));
aml_append(dev, aml_name_decl("_CRS", crs));
aml_append(scope, dev);
base += size;
}
}
static void acpi_dsdt_add_pci(Aml *scope, const MemMapEntry *memmap,
uint32_t irq, bool use_highmem, bool highmem_ecam)
{
int ecam_id = VIRT_ECAM_ID(highmem_ecam);
Aml *method, *crs, *ifctx, *UUID, *ifctx1, *elsectx, *buf;
int i, bus_no;
hwaddr base_mmio = memmap[VIRT_PCIE_MMIO].base;
hwaddr size_mmio = memmap[VIRT_PCIE_MMIO].size;
hwaddr base_pio = memmap[VIRT_PCIE_PIO].base;
hwaddr size_pio = memmap[VIRT_PCIE_PIO].size;
hwaddr base_ecam = memmap[ecam_id].base;
hwaddr size_ecam = memmap[ecam_id].size;
int nr_pcie_buses = size_ecam / PCIE_MMCFG_SIZE_MIN;
Aml *dev = aml_device("%s", "PCI0");
aml_append(dev, aml_name_decl("_HID", aml_string("PNP0A08")));
aml_append(dev, aml_name_decl("_CID", aml_string("PNP0A03")));
aml_append(dev, aml_name_decl("_SEG", aml_int(0)));
aml_append(dev, aml_name_decl("_BBN", aml_int(0)));
aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
aml_append(dev, aml_name_decl("_UID", aml_string("PCI0")));
aml_append(dev, aml_name_decl("_STR", aml_unicode("PCIe 0 Device")));
aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
/* Declare the PCI Routing Table. */
Aml *rt_pkg = aml_varpackage(nr_pcie_buses * PCI_NUM_PINS);
for (bus_no = 0; bus_no < nr_pcie_buses; bus_no++) {
for (i = 0; i < PCI_NUM_PINS; i++) {
int gsi = (i + bus_no) % PCI_NUM_PINS;
Aml *pkg = aml_package(4);
aml_append(pkg, aml_int((bus_no << 16) | 0xFFFF));
aml_append(pkg, aml_int(i));
aml_append(pkg, aml_name("GSI%d", gsi));
aml_append(pkg, aml_int(0));
aml_append(rt_pkg, pkg);
}
}
aml_append(dev, aml_name_decl("_PRT", rt_pkg));
/* Create GSI link device */
for (i = 0; i < PCI_NUM_PINS; i++) {
uint32_t irqs = irq + i;
Aml *dev_gsi = aml_device("GSI%d", i);
aml_append(dev_gsi, aml_name_decl("_HID", aml_string("PNP0C0F")));
aml_append(dev_gsi, aml_name_decl("_UID", aml_int(0)));
crs = aml_resource_template();
aml_append(crs,
aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, &irqs, 1));
aml_append(dev_gsi, aml_name_decl("_PRS", crs));
crs = aml_resource_template();
aml_append(crs,
aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, &irqs, 1));
aml_append(dev_gsi, aml_name_decl("_CRS", crs));
method = aml_method("_SRS", 1, AML_NOTSERIALIZED);
aml_append(dev_gsi, method);
aml_append(dev, dev_gsi);
}
method = aml_method("_CBA", 0, AML_NOTSERIALIZED);
aml_append(method, aml_return(aml_int(base_ecam)));
aml_append(dev, method);
method = aml_method("_CRS", 0, AML_NOTSERIALIZED);
Aml *rbuf = aml_resource_template();
aml_append(rbuf,
aml_word_bus_number(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
0x0000, 0x0000, nr_pcie_buses - 1, 0x0000,
nr_pcie_buses));
aml_append(rbuf,
aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000, base_mmio,
base_mmio + size_mmio - 1, 0x0000, size_mmio));
aml_append(rbuf,
aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
AML_ENTIRE_RANGE, 0x0000, 0x0000, size_pio - 1, base_pio,
size_pio));
if (use_highmem) {
hwaddr base_mmio_high = memmap[VIRT_PCIE_MMIO_HIGH].base;
hwaddr size_mmio_high = memmap[VIRT_PCIE_MMIO_HIGH].size;
aml_append(rbuf,
aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
base_mmio_high,
base_mmio_high + size_mmio_high - 1, 0x0000,
size_mmio_high));
}
aml_append(method, aml_name_decl("RBUF", rbuf));
aml_append(method, aml_return(rbuf));
aml_append(dev, method);
/* Declare an _OSC (OS Control Handoff) method */
aml_append(dev, aml_name_decl("SUPP", aml_int(0)));
aml_append(dev, aml_name_decl("CTRL", aml_int(0)));
method = aml_method("_OSC", 4, AML_NOTSERIALIZED);
aml_append(method,
aml_create_dword_field(aml_arg(3), aml_int(0), "CDW1"));
/* PCI Firmware Specification 3.0
* 4.5.1. _OSC Interface for PCI Host Bridge Devices
* The _OSC interface for a PCI/PCI-X/PCI Express hierarchy is
* identified by the Universal Unique IDentifier (UUID)
* 33DB4D5B-1FF7-401C-9657-7441C03DD766
*/
UUID = aml_touuid("33DB4D5B-1FF7-401C-9657-7441C03DD766");
ifctx = aml_if(aml_equal(aml_arg(0), UUID));
aml_append(ifctx,
aml_create_dword_field(aml_arg(3), aml_int(4), "CDW2"));
aml_append(ifctx,
aml_create_dword_field(aml_arg(3), aml_int(8), "CDW3"));
aml_append(ifctx, aml_store(aml_name("CDW2"), aml_name("SUPP")));
aml_append(ifctx, aml_store(aml_name("CDW3"), aml_name("CTRL")));
aml_append(ifctx, aml_store(aml_and(aml_name("CTRL"), aml_int(0x1D), NULL),
aml_name("CTRL")));
ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x08), NULL),
aml_name("CDW1")));
aml_append(ifctx, ifctx1);
ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
aml_append(ifctx1, aml_store(aml_or(aml_name("CDW1"), aml_int(0x10), NULL),
aml_name("CDW1")));
aml_append(ifctx, ifctx1);
aml_append(ifctx, aml_store(aml_name("CTRL"), aml_name("CDW3")));
aml_append(ifctx, aml_return(aml_arg(3)));
aml_append(method, ifctx);
elsectx = aml_else();
aml_append(elsectx, aml_store(aml_or(aml_name("CDW1"), aml_int(4), NULL),
aml_name("CDW1")));
aml_append(elsectx, aml_return(aml_arg(3)));
aml_append(method, elsectx);
aml_append(dev, method);
method = aml_method("_DSM", 4, AML_NOTSERIALIZED);
/* PCI Firmware Specification 3.0
* 4.6.1. _DSM for PCI Express Slot Information
* The UUID in _DSM in this context is
* {E5C937D0-3553-4D7A-9117-EA4D19C3434D}
*/
UUID = aml_touuid("E5C937D0-3553-4D7A-9117-EA4D19C3434D");
ifctx = aml_if(aml_equal(aml_arg(0), UUID));
ifctx1 = aml_if(aml_equal(aml_arg(2), aml_int(0)));
uint8_t byte_list[1] = {1};
buf = aml_buffer(1, byte_list);
aml_append(ifctx1, aml_return(buf));
aml_append(ifctx, ifctx1);
aml_append(method, ifctx);
byte_list[0] = 0;
buf = aml_buffer(1, byte_list);
aml_append(method, aml_return(buf));
aml_append(dev, method);
Aml *dev_rp0 = aml_device("%s", "RP0");
aml_append(dev_rp0, aml_name_decl("_ADR", aml_int(0)));
aml_append(dev, dev_rp0);
Aml *dev_res0 = aml_device("%s", "RES0");
aml_append(dev_res0, aml_name_decl("_HID", aml_string("PNP0C02")));
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, 0x0000, base_ecam,
base_ecam + size_ecam - 1, 0x0000, size_ecam));
aml_append(dev_res0, aml_name_decl("_CRS", crs));
aml_append(dev, dev_res0);
aml_append(scope, dev);
}
static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
uint32_t gpio_irq)
{
Aml *dev = aml_device("GPO0");
aml_append(dev, aml_name_decl("_HID", aml_string("ARMH0061")));
aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
aml_append(dev, aml_name_decl("_UID", aml_int(0)));
Aml *crs = aml_resource_template();
aml_append(crs, aml_memory32_fixed(gpio_memmap->base, gpio_memmap->size,
AML_READ_WRITE));
aml_append(crs, aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, &gpio_irq, 1));
aml_append(dev, aml_name_decl("_CRS", crs));
Aml *aei = aml_resource_template();
/* Pin 3 for power button */
const uint32_t pin_list[1] = {3};
aml_append(aei, aml_gpio_int(AML_CONSUMER, AML_EDGE, AML_ACTIVE_HIGH,
AML_EXCLUSIVE, AML_PULL_UP, 0, pin_list, 1,
"GPO0", NULL, 0));
aml_append(dev, aml_name_decl("_AEI", aei));
/* _E03 is handle for power button */
Aml *method = aml_method("_E03", 0, AML_NOTSERIALIZED);
aml_append(method, aml_notify(aml_name(ACPI_POWER_BUTTON_DEVICE),
aml_int(0x80)));
aml_append(dev, method);
aml_append(scope, dev);
}
static void acpi_dsdt_add_power_button(Aml *scope)
{
Aml *dev = aml_device(ACPI_POWER_BUTTON_DEVICE);
aml_append(dev, aml_name_decl("_HID", aml_string("PNP0C0C")));
aml_append(dev, aml_name_decl("_ADR", aml_int(0)));
aml_append(dev, aml_name_decl("_UID", aml_int(0)));
aml_append(scope, dev);
}
/* RSDP */
static GArray *
build_rsdp(GArray *rsdp_table, BIOSLinker *linker, unsigned xsdt_tbl_offset)
{
AcpiRsdpDescriptor *rsdp = acpi_data_push(rsdp_table, sizeof *rsdp);
unsigned xsdt_pa_size = sizeof(rsdp->xsdt_physical_address);
unsigned xsdt_pa_offset =
(char *)&rsdp->xsdt_physical_address - rsdp_table->data;
bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, rsdp_table, 16,
true /* fseg memory */);
memcpy(&rsdp->signature, "RSD PTR ", sizeof(rsdp->signature));
memcpy(rsdp->oem_id, ACPI_BUILD_APPNAME6, sizeof(rsdp->oem_id));
rsdp->length = cpu_to_le32(sizeof(*rsdp));
rsdp->revision = 0x02;
/* Address to be filled by Guest linker */
bios_linker_loader_add_pointer(linker,
ACPI_BUILD_RSDP_FILE, xsdt_pa_offset, xsdt_pa_size,
ACPI_BUILD_TABLE_FILE, xsdt_tbl_offset);
/* Checksum to be filled by Guest linker */
bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
(char *)rsdp - rsdp_table->data, sizeof *rsdp,
(char *)&rsdp->checksum - rsdp_table->data);
return rsdp_table;
}
static void
build_iort(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
int nb_nodes, iort_start = table_data->len;
AcpiIortIdMapping *idmap;
AcpiIortItsGroup *its;
AcpiIortTable *iort;
AcpiIortSmmu3 *smmu;
size_t node_size, iort_node_offset, iort_length, smmu_offset = 0;
AcpiIortRC *rc;
iort = acpi_data_push(table_data, sizeof(*iort));
if (vms->iommu == VIRT_IOMMU_SMMUV3) {
nb_nodes = 3; /* RC, ITS, SMMUv3 */
} else {
nb_nodes = 2; /* RC, ITS */
}
iort_length = sizeof(*iort);
iort->node_count = cpu_to_le32(nb_nodes);
/*
* Use a copy in case table_data->data moves during acpi_data_push
* operations.
*/
iort_node_offset = sizeof(*iort);
iort->node_offset = cpu_to_le32(iort_node_offset);
/* ITS group node */
node_size = sizeof(*its) + sizeof(uint32_t);
iort_length += node_size;
its = acpi_data_push(table_data, node_size);
its->type = ACPI_IORT_NODE_ITS_GROUP;
its->length = cpu_to_le16(node_size);
its->its_count = cpu_to_le32(1);
its->identifiers[0] = 0; /* MADT translation_id */
if (vms->iommu == VIRT_IOMMU_SMMUV3) {
int irq = vms->irqmap[VIRT_SMMU];
/* SMMUv3 node */
smmu_offset = iort_node_offset + node_size;
node_size = sizeof(*smmu) + sizeof(*idmap);
iort_length += node_size;
smmu = acpi_data_push(table_data, node_size);
smmu->type = ACPI_IORT_NODE_SMMU_V3;
smmu->length = cpu_to_le16(node_size);
smmu->mapping_count = cpu_to_le32(1);
smmu->mapping_offset = cpu_to_le32(sizeof(*smmu));
smmu->base_address = cpu_to_le64(vms->memmap[VIRT_SMMU].base);
smmu->event_gsiv = cpu_to_le32(irq);
smmu->pri_gsiv = cpu_to_le32(irq + 1);
smmu->gerr_gsiv = cpu_to_le32(irq + 2);
smmu->sync_gsiv = cpu_to_le32(irq + 3);
/* Identity RID mapping covering the whole input RID range */
idmap = &smmu->id_mapping_array[0];
idmap->input_base = 0;
idmap->id_count = cpu_to_le32(0xFFFF);
idmap->output_base = 0;
/* output IORT node is the ITS group node (the first node) */
idmap->output_reference = cpu_to_le32(iort_node_offset);
}
/* Root Complex Node */
node_size = sizeof(*rc) + sizeof(*idmap);
iort_length += node_size;
rc = acpi_data_push(table_data, node_size);
rc->type = ACPI_IORT_NODE_PCI_ROOT_COMPLEX;
rc->length = cpu_to_le16(node_size);
rc->mapping_count = cpu_to_le32(1);
rc->mapping_offset = cpu_to_le32(sizeof(*rc));
/* fully coherent device */
rc->memory_properties.cache_coherency = cpu_to_le32(1);
rc->memory_properties.memory_flags = 0x3; /* CCA = CPM = DCAS = 1 */
rc->pci_segment_number = 0; /* MCFG pci_segment */
/* Identity RID mapping covering the whole input RID range */
idmap = &rc->id_mapping_array[0];
idmap->input_base = 0;
idmap->id_count = cpu_to_le32(0xFFFF);
idmap->output_base = 0;
if (vms->iommu == VIRT_IOMMU_SMMUV3) {
/* output IORT node is the smmuv3 node */
idmap->output_reference = cpu_to_le32(smmu_offset);
} else {
/* output IORT node is the ITS group node (the first node) */
idmap->output_reference = cpu_to_le32(iort_node_offset);
}
/*
* Update the pointer address in case table_data->data moves during above
* acpi_data_push operations.
*/
iort = (AcpiIortTable *)(table_data->data + iort_start);
iort->length = cpu_to_le32(iort_length);
build_header(linker, table_data, (void *)(table_data->data + iort_start),
"IORT", table_data->len - iort_start, 0, NULL, NULL);
}
static void
build_spcr(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
AcpiSerialPortConsoleRedirection *spcr;
const MemMapEntry *uart_memmap = &vms->memmap[VIRT_UART];
int irq = vms->irqmap[VIRT_UART] + ARM_SPI_BASE;
int spcr_start = table_data->len;
spcr = acpi_data_push(table_data, sizeof(*spcr));
spcr->interface_type = 0x3; /* ARM PL011 UART */
spcr->base_address.space_id = AML_SYSTEM_MEMORY;
spcr->base_address.bit_width = 8;
spcr->base_address.bit_offset = 0;
spcr->base_address.access_width = 1;
spcr->base_address.address = cpu_to_le64(uart_memmap->base);
spcr->interrupt_types = (1 << 3); /* Bit[3] ARMH GIC interrupt */
spcr->gsi = cpu_to_le32(irq); /* Global System Interrupt */
spcr->baud = 3; /* Baud Rate: 3 = 9600 */
spcr->parity = 0; /* No Parity */
spcr->stopbits = 1; /* 1 Stop bit */
spcr->flowctrl = (1 << 1); /* Bit[1] = RTS/CTS hardware flow control */
spcr->term_type = 0; /* Terminal Type: 0 = VT100 */
spcr->pci_device_id = 0xffff; /* PCI Device ID: not a PCI device */
spcr->pci_vendor_id = 0xffff; /* PCI Vendor ID: not a PCI device */
build_header(linker, table_data, (void *)(table_data->data + spcr_start),
"SPCR", table_data->len - spcr_start, 2, NULL, NULL);
}
static void
build_srat(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
AcpiSystemResourceAffinityTable *srat;
AcpiSratProcessorGiccAffinity *core;
AcpiSratMemoryAffinity *numamem;
int i, srat_start;
uint64_t mem_base;
MachineClass *mc = MACHINE_GET_CLASS(vms);
const CPUArchIdList *cpu_list = mc->possible_cpu_arch_ids(MACHINE(vms));
srat_start = table_data->len;
srat = acpi_data_push(table_data, sizeof(*srat));
srat->reserved1 = cpu_to_le32(1);
for (i = 0; i < cpu_list->len; ++i) {
core = acpi_data_push(table_data, sizeof(*core));
core->type = ACPI_SRAT_PROCESSOR_GICC;
core->length = sizeof(*core);
core->proximity = cpu_to_le32(cpu_list->cpus[i].props.node_id);
core->acpi_processor_uid = cpu_to_le32(i);
core->flags = cpu_to_le32(1);
}
mem_base = vms->memmap[VIRT_MEM].base;
for (i = 0; i < nb_numa_nodes; ++i) {
numamem = acpi_data_push(table_data, sizeof(*numamem));
build_srat_memory(numamem, mem_base, numa_info[i].node_mem, i,
MEM_AFFINITY_ENABLED);
mem_base += numa_info[i].node_mem;
}
build_header(linker, table_data, (void *)(table_data->data + srat_start),
"SRAT", table_data->len - srat_start, 3, NULL, NULL);
}
static void
build_mcfg(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
AcpiTableMcfg *mcfg;
const MemMapEntry *memmap = vms->memmap;
int ecam_id = VIRT_ECAM_ID(vms->highmem_ecam);
int len = sizeof(*mcfg) + sizeof(mcfg->allocation[0]);
int mcfg_start = table_data->len;
mcfg = acpi_data_push(table_data, len);
mcfg->allocation[0].address = cpu_to_le64(memmap[ecam_id].base);
/* Only a single allocation so no need to play with segments */
mcfg->allocation[0].pci_segment = cpu_to_le16(0);
mcfg->allocation[0].start_bus_number = 0;
mcfg->allocation[0].end_bus_number = (memmap[ecam_id].size
/ PCIE_MMCFG_SIZE_MIN) - 1;
build_header(linker, table_data, (void *)(table_data->data + mcfg_start),
"MCFG", table_data->len - mcfg_start, 1, NULL, NULL);
}
/* GTDT */
static void
build_gtdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
int gtdt_start = table_data->len;
AcpiGenericTimerTable *gtdt;
uint32_t irqflags;
if (vmc->claim_edge_triggered_timers) {
irqflags = ACPI_GTDT_INTERRUPT_MODE_EDGE;
} else {
irqflags = ACPI_GTDT_INTERRUPT_MODE_LEVEL;
}
gtdt = acpi_data_push(table_data, sizeof *gtdt);
/* The interrupt values are the same with the device tree when adding 16 */
gtdt->secure_el1_interrupt = cpu_to_le32(ARCH_TIMER_S_EL1_IRQ + 16);
gtdt->secure_el1_flags = cpu_to_le32(irqflags);
gtdt->non_secure_el1_interrupt = cpu_to_le32(ARCH_TIMER_NS_EL1_IRQ + 16);
gtdt->non_secure_el1_flags = cpu_to_le32(irqflags |
ACPI_GTDT_CAP_ALWAYS_ON);
gtdt->virtual_timer_interrupt = cpu_to_le32(ARCH_TIMER_VIRT_IRQ + 16);
gtdt->virtual_timer_flags = cpu_to_le32(irqflags);
gtdt->non_secure_el2_interrupt = cpu_to_le32(ARCH_TIMER_NS_EL2_IRQ + 16);
gtdt->non_secure_el2_flags = cpu_to_le32(irqflags);
build_header(linker, table_data,
(void *)(table_data->data + gtdt_start), "GTDT",
table_data->len - gtdt_start, 2, NULL, NULL);
}
/* MADT */
static void
build_madt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
int madt_start = table_data->len;
const MemMapEntry *memmap = vms->memmap;
const int *irqmap = vms->irqmap;
AcpiMultipleApicTable *madt;
AcpiMadtGenericDistributor *gicd;
AcpiMadtGenericMsiFrame *gic_msi;
int i;
madt = acpi_data_push(table_data, sizeof *madt);
gicd = acpi_data_push(table_data, sizeof *gicd);
gicd->type = ACPI_APIC_GENERIC_DISTRIBUTOR;
gicd->length = sizeof(*gicd);
gicd->base_address = cpu_to_le64(memmap[VIRT_GIC_DIST].base);
gicd->version = vms->gic_version;
for (i = 0; i < vms->smp_cpus; i++) {
AcpiMadtGenericCpuInterface *gicc = acpi_data_push(table_data,
sizeof(*gicc));
ARMCPU *armcpu = ARM_CPU(qemu_get_cpu(i));
gicc->type = ACPI_APIC_GENERIC_CPU_INTERFACE;
gicc->length = sizeof(*gicc);
if (vms->gic_version == 2) {
gicc->base_address = cpu_to_le64(memmap[VIRT_GIC_CPU].base);
}
gicc->cpu_interface_number = cpu_to_le32(i);
gicc->arm_mpidr = cpu_to_le64(armcpu->mp_affinity);
gicc->uid = cpu_to_le32(i);
gicc->flags = cpu_to_le32(ACPI_MADT_GICC_ENABLED);
if (arm_feature(&armcpu->env, ARM_FEATURE_PMU)) {
gicc->performance_interrupt = cpu_to_le32(PPI(VIRTUAL_PMU_IRQ));
}
if (vms->virt && vms->gic_version == 3) {
gicc->vgic_interrupt = cpu_to_le32(PPI(ARCH_GICV3_MAINT_IRQ));
}
}
if (vms->gic_version == 3) {
AcpiMadtGenericTranslator *gic_its;
int nb_redist_regions = virt_gicv3_redist_region_count(vms);
AcpiMadtGenericRedistributor *gicr = acpi_data_push(table_data,
sizeof *gicr);
gicr->type = ACPI_APIC_GENERIC_REDISTRIBUTOR;
gicr->length = sizeof(*gicr);
gicr->base_address = cpu_to_le64(memmap[VIRT_GIC_REDIST].base);
gicr->range_length = cpu_to_le32(memmap[VIRT_GIC_REDIST].size);
if (nb_redist_regions == 2) {
gicr = acpi_data_push(table_data, sizeof(*gicr));
gicr->type = ACPI_APIC_GENERIC_REDISTRIBUTOR;
gicr->length = sizeof(*gicr);
gicr->base_address = cpu_to_le64(memmap[VIRT_GIC_REDIST2].base);
gicr->range_length = cpu_to_le32(memmap[VIRT_GIC_REDIST2].size);
}
if (its_class_name() && !vmc->no_its) {
gic_its = acpi_data_push(table_data, sizeof *gic_its);
gic_its->type = ACPI_APIC_GENERIC_TRANSLATOR;
gic_its->length = sizeof(*gic_its);
gic_its->translation_id = 0;
gic_its->base_address = cpu_to_le64(memmap[VIRT_GIC_ITS].base);
}
} else {
gic_msi = acpi_data_push(table_data, sizeof *gic_msi);
gic_msi->type = ACPI_APIC_GENERIC_MSI_FRAME;
gic_msi->length = sizeof(*gic_msi);
gic_msi->gic_msi_frame_id = 0;
gic_msi->base_address = cpu_to_le64(memmap[VIRT_GIC_V2M].base);
gic_msi->flags = cpu_to_le32(1);
gic_msi->spi_count = cpu_to_le16(NUM_GICV2M_SPIS);
gic_msi->spi_base = cpu_to_le16(irqmap[VIRT_GIC_V2M] + ARM_SPI_BASE);
}
build_header(linker, table_data,
(void *)(table_data->data + madt_start), "APIC",
table_data->len - madt_start, 3, NULL, NULL);
}
/* FADT */
static void build_fadt_rev5(GArray *table_data, BIOSLinker *linker,
VirtMachineState *vms, unsigned dsdt_tbl_offset)
{
/* ACPI v5.1 */
AcpiFadtData fadt = {
.rev = 5,
.minor_ver = 1,
.flags = 1 << ACPI_FADT_F_HW_REDUCED_ACPI,
.xdsdt_tbl_offset = &dsdt_tbl_offset,
};
switch (vms->psci_conduit) {
case QEMU_PSCI_CONDUIT_DISABLED:
fadt.arm_boot_arch = 0;
break;
case QEMU_PSCI_CONDUIT_HVC:
fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT |
ACPI_FADT_ARM_PSCI_USE_HVC;
break;
case QEMU_PSCI_CONDUIT_SMC:
fadt.arm_boot_arch = ACPI_FADT_ARM_PSCI_COMPLIANT;
break;
default:
g_assert_not_reached();
}
build_fadt(table_data, linker, &fadt, NULL, NULL);
}
/* DSDT */
static void
build_dsdt(GArray *table_data, BIOSLinker *linker, VirtMachineState *vms)
{
Aml *scope, *dsdt;
const MemMapEntry *memmap = vms->memmap;
const int *irqmap = vms->irqmap;
dsdt = init_aml_allocator();
/* Reserve space for header */
acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
/* When booting the VM with UEFI, UEFI takes ownership of the RTC hardware.
* While UEFI can use libfdt to disable the RTC device node in the DTB that
* it passes to the OS, it cannot modify AML. Therefore, we won't generate
* the RTC ACPI device at all when using UEFI.
*/
scope = aml_scope("\\_SB");
acpi_dsdt_add_cpus(scope, vms->smp_cpus);
acpi_dsdt_add_uart(scope, &memmap[VIRT_UART],
(irqmap[VIRT_UART] + ARM_SPI_BASE));
acpi_dsdt_add_flash(scope, &memmap[VIRT_FLASH]);
acpi_dsdt_add_fw_cfg(scope, &memmap[VIRT_FW_CFG]);
acpi_dsdt_add_virtio(scope, &memmap[VIRT_MMIO],
(irqmap[VIRT_MMIO] + ARM_SPI_BASE), NUM_VIRTIO_TRANSPORTS);
acpi_dsdt_add_pci(scope, memmap, (irqmap[VIRT_PCIE] + ARM_SPI_BASE),
vms->highmem, vms->highmem_ecam);
acpi_dsdt_add_gpio(scope, &memmap[VIRT_GPIO],
(irqmap[VIRT_GPIO] + ARM_SPI_BASE));
acpi_dsdt_add_power_button(scope);
aml_append(dsdt, scope);
/* copy AML table into ACPI tables blob and patch header there */
g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
build_header(linker, table_data,
(void *)(table_data->data + table_data->len - dsdt->buf->len),
"DSDT", dsdt->buf->len, 2, NULL, NULL);
free_aml_allocator();
}
typedef
struct AcpiBuildState {
/* Copy of table in RAM (for patching). */
MemoryRegion *table_mr;
MemoryRegion *rsdp_mr;
MemoryRegion *linker_mr;
/* Is table patched? */
bool patched;
} AcpiBuildState;
static
void virt_acpi_build(VirtMachineState *vms, AcpiBuildTables *tables)
{
VirtMachineClass *vmc = VIRT_MACHINE_GET_CLASS(vms);
GArray *table_offsets;
unsigned dsdt, xsdt;
GArray *tables_blob = tables->table_data;
table_offsets = g_array_new(false, true /* clear */,
sizeof(uint32_t));
bios_linker_loader_alloc(tables->linker,
ACPI_BUILD_TABLE_FILE, tables_blob,
64, false /* high memory */);
/* DSDT is pointed to by FADT */
dsdt = tables_blob->len;
build_dsdt(tables_blob, tables->linker, vms);
/* FADT MADT GTDT MCFG SPCR pointed to by RSDT */
acpi_add_table(table_offsets, tables_blob);
build_fadt_rev5(tables_blob, tables->linker, vms, dsdt);
acpi_add_table(table_offsets, tables_blob);
build_madt(tables_blob, tables->linker, vms);
acpi_add_table(table_offsets, tables_blob);
build_gtdt(tables_blob, tables->linker, vms);
acpi_add_table(table_offsets, tables_blob);
build_mcfg(tables_blob, tables->linker, vms);
acpi_add_table(table_offsets, tables_blob);
build_spcr(tables_blob, tables->linker, vms);
if (nb_numa_nodes > 0) {
acpi_add_table(table_offsets, tables_blob);
build_srat(tables_blob, tables->linker, vms);
if (have_numa_distance) {
acpi_add_table(table_offsets, tables_blob);
build_slit(tables_blob, tables->linker);
}
}
if (its_class_name() && !vmc->no_its) {
acpi_add_table(table_offsets, tables_blob);
build_iort(tables_blob, tables->linker, vms);
}
/* XSDT is pointed to by RSDP */
xsdt = tables_blob->len;
build_xsdt(tables_blob, tables->linker, table_offsets, NULL, NULL);
/* RSDP is in FSEG memory, so allocate it separately */
build_rsdp(tables->rsdp, tables->linker, xsdt);
/* Cleanup memory that's no longer used. */
g_array_free(table_offsets, true);
}
static void acpi_ram_update(MemoryRegion *mr, GArray *data)
{
uint32_t size = acpi_data_len(data);
/* Make sure RAM size is correct - in case it got changed
* e.g. by migration */
memory_region_ram_resize(mr, size, &error_abort);
memcpy(memory_region_get_ram_ptr(mr), data->data, size);
memory_region_set_dirty(mr, 0, size);
}
static void virt_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 = true;
acpi_build_tables_init(&tables);
virt_acpi_build(VIRT_MACHINE(qdev_get_machine()), &tables);
acpi_ram_update(build_state->table_mr, tables.table_data);
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 virt_acpi_build_reset(void *build_opaque)
{
AcpiBuildState *build_state = build_opaque;
build_state->patched = false;
}
static MemoryRegion *acpi_add_rom_blob(AcpiBuildState *build_state,
GArray *blob, const char *name,
uint64_t max_size)
{
return rom_add_blob(name, blob->data, acpi_data_len(blob), max_size, -1,
name, virt_acpi_build_update, build_state, NULL, true);
}
static const VMStateDescription vmstate_virt_acpi_build = {
.name = "virt_acpi_build",
.version_id = 1,
.minimum_version_id = 1,
.fields = (VMStateField[]) {
VMSTATE_BOOL(patched, AcpiBuildState),
VMSTATE_END_OF_LIST()
},
};
void virt_acpi_setup(VirtMachineState *vms)
{
AcpiBuildTables tables;
AcpiBuildState *build_state;
if (!vms->fw_cfg) {
trace_virt_acpi_setup();
return;
}
if (!acpi_enabled) {
trace_virt_acpi_setup();
return;
}
build_state = g_malloc0(sizeof *build_state);
acpi_build_tables_init(&tables);
virt_acpi_build(vms, &tables);
/* Now expose it all to Guest */
build_state->table_mr = acpi_add_rom_blob(build_state, tables.table_data,
ACPI_BUILD_TABLE_FILE,
ACPI_BUILD_TABLE_MAX_SIZE);
assert(build_state->table_mr != NULL);
build_state->linker_mr =
acpi_add_rom_blob(build_state, tables.linker->cmd_blob,
"etc/table-loader", 0);
fw_cfg_add_file(vms->fw_cfg, ACPI_BUILD_TPMLOG_FILE, tables.tcpalog->data,
acpi_data_len(tables.tcpalog));
build_state->rsdp_mr = acpi_add_rom_blob(build_state, tables.rsdp,
ACPI_BUILD_RSDP_FILE, 0);
qemu_register_reset(virt_acpi_build_reset, build_state);
virt_acpi_build_reset(build_state);
vmstate_register(NULL, 0, &vmstate_virt_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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