24db877ab6
Uses the existing gpex device which is also used as pcie host bridge on arm/aarch64. For now only a 32bit mmio window and no ioport support. It is disabled by default, use "-machine microvm,pcie=on" to enable. ACPI support must be enabled too because the bus is declared in the DSDT table. Signed-off-by: Gerd Hoffmann <kraxel@redhat.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Message-id: 20200928104256.9241-6-kraxel@redhat.com
253 lines
8.3 KiB
C
253 lines
8.3 KiB
C
/* Support for generating ACPI tables and passing them to Guests
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*
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* Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net>
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* Copyright (C) 2006 Fabrice Bellard
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* Copyright (C) 2013 Red Hat Inc
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*
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* Author: Michael S. Tsirkin <mst@redhat.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu/cutils.h"
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#include "qapi/error.h"
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#include "exec/memory.h"
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#include "hw/acpi/acpi.h"
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#include "hw/acpi/aml-build.h"
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#include "hw/acpi/bios-linker-loader.h"
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#include "hw/acpi/generic_event_device.h"
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#include "hw/acpi/utils.h"
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#include "hw/boards.h"
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#include "hw/i386/fw_cfg.h"
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#include "hw/i386/microvm.h"
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#include "hw/pci/pci.h"
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#include "hw/pci/pcie_host.h"
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#include "hw/virtio/virtio-mmio.h"
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#include "acpi-common.h"
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#include "acpi-microvm.h"
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static void acpi_dsdt_add_virtio(Aml *scope,
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MicrovmMachineState *mms)
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{
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gchar *separator;
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long int index;
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BusState *bus;
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BusChild *kid;
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bus = sysbus_get_default();
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QTAILQ_FOREACH(kid, &bus->children, sibling) {
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DeviceState *dev = kid->child;
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Object *obj = object_dynamic_cast(OBJECT(dev), TYPE_VIRTIO_MMIO);
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if (obj) {
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VirtIOMMIOProxy *mmio = VIRTIO_MMIO(obj);
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VirtioBusState *mmio_virtio_bus = &mmio->bus;
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BusState *mmio_bus = &mmio_virtio_bus->parent_obj;
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if (QTAILQ_EMPTY(&mmio_bus->children)) {
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continue;
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}
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separator = g_strrstr(mmio_bus->name, ".");
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if (!separator) {
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continue;
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}
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if (qemu_strtol(separator + 1, NULL, 10, &index) != 0) {
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continue;
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}
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uint32_t irq = mms->virtio_irq_base + index;
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hwaddr base = VIRTIO_MMIO_BASE + index * 512;
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hwaddr size = 512;
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Aml *dev = aml_device("VR%02u", (unsigned)index);
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aml_append(dev, aml_name_decl("_HID", aml_string("LNRO0005")));
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aml_append(dev, aml_name_decl("_UID", aml_int(index)));
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aml_append(dev, aml_name_decl("_CCA", aml_int(1)));
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Aml *crs = aml_resource_template();
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aml_append(crs, aml_memory32_fixed(base, size, AML_READ_WRITE));
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aml_append(crs,
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aml_interrupt(AML_CONSUMER, AML_LEVEL, AML_ACTIVE_HIGH,
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AML_EXCLUSIVE, &irq, 1));
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aml_append(dev, aml_name_decl("_CRS", crs));
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aml_append(scope, dev);
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}
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}
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}
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static void acpi_dsdt_add_pci(Aml *scope, MicrovmMachineState *mms)
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{
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if (mms->pcie != ON_OFF_AUTO_ON) {
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return;
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}
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acpi_dsdt_add_gpex(scope, &mms->gpex);
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}
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static void
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build_dsdt_microvm(GArray *table_data, BIOSLinker *linker,
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MicrovmMachineState *mms)
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{
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X86MachineState *x86ms = X86_MACHINE(mms);
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Aml *dsdt, *sb_scope, *scope, *pkg;
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bool ambiguous;
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Object *isabus;
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isabus = object_resolve_path_type("", TYPE_ISA_BUS, &ambiguous);
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assert(isabus);
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assert(!ambiguous);
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dsdt = init_aml_allocator();
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/* Reserve space for header */
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acpi_data_push(dsdt->buf, sizeof(AcpiTableHeader));
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sb_scope = aml_scope("_SB");
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fw_cfg_add_acpi_dsdt(sb_scope, x86ms->fw_cfg);
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isa_build_aml(ISA_BUS(isabus), sb_scope);
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build_ged_aml(sb_scope, GED_DEVICE, x86ms->acpi_dev,
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GED_MMIO_IRQ, AML_SYSTEM_MEMORY, GED_MMIO_BASE);
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acpi_dsdt_add_power_button(sb_scope);
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acpi_dsdt_add_virtio(sb_scope, mms);
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acpi_dsdt_add_pci(sb_scope, mms);
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aml_append(dsdt, sb_scope);
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/* ACPI 5.0: Table 7-209 System State Package */
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scope = aml_scope("\\");
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pkg = aml_package(4);
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aml_append(pkg, aml_int(ACPI_GED_SLP_TYP_S5));
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aml_append(pkg, aml_int(0)); /* ignored */
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aml_append(pkg, aml_int(0)); /* reserved */
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aml_append(pkg, aml_int(0)); /* reserved */
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aml_append(scope, aml_name_decl("_S5", pkg));
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aml_append(dsdt, scope);
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/* copy AML table into ACPI tables blob and patch header there */
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g_array_append_vals(table_data, dsdt->buf->data, dsdt->buf->len);
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build_header(linker, table_data,
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(void *)(table_data->data + table_data->len - dsdt->buf->len),
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"DSDT", dsdt->buf->len, 2, NULL, NULL);
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free_aml_allocator();
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}
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static void acpi_build_microvm(AcpiBuildTables *tables,
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MicrovmMachineState *mms)
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{
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MachineState *machine = MACHINE(mms);
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X86MachineState *x86ms = X86_MACHINE(mms);
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GArray *table_offsets;
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GArray *tables_blob = tables->table_data;
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unsigned dsdt, xsdt;
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AcpiFadtData pmfadt = {
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/* ACPI 5.0: 4.1 Hardware-Reduced ACPI */
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.rev = 5,
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.flags = ((1 << ACPI_FADT_F_HW_REDUCED_ACPI) |
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(1 << ACPI_FADT_F_RESET_REG_SUP)),
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/* ACPI 5.0: 4.8.3.7 Sleep Control and Status Registers */
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.sleep_ctl = {
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.space_id = AML_AS_SYSTEM_MEMORY,
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.bit_width = 8,
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.address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_CTL,
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},
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.sleep_sts = {
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.space_id = AML_AS_SYSTEM_MEMORY,
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.bit_width = 8,
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.address = GED_MMIO_BASE_REGS + ACPI_GED_REG_SLEEP_STS,
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},
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/* ACPI 5.0: 4.8.3.6 Reset Register */
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.reset_reg = {
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.space_id = AML_AS_SYSTEM_MEMORY,
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.bit_width = 8,
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.address = GED_MMIO_BASE_REGS + ACPI_GED_REG_RESET,
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},
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.reset_val = ACPI_GED_RESET_VALUE,
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};
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table_offsets = g_array_new(false, true /* clear */,
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sizeof(uint32_t));
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bios_linker_loader_alloc(tables->linker,
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ACPI_BUILD_TABLE_FILE, tables_blob,
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64 /* Ensure FACS is aligned */,
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false /* high memory */);
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dsdt = tables_blob->len;
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build_dsdt_microvm(tables_blob, tables->linker, mms);
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pmfadt.dsdt_tbl_offset = &dsdt;
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pmfadt.xdsdt_tbl_offset = &dsdt;
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acpi_add_table(table_offsets, tables_blob);
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build_fadt(tables_blob, tables->linker, &pmfadt, NULL, NULL);
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acpi_add_table(table_offsets, tables_blob);
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acpi_build_madt(tables_blob, tables->linker, X86_MACHINE(machine),
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ACPI_DEVICE_IF(x86ms->acpi_dev), false);
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xsdt = tables_blob->len;
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build_xsdt(tables_blob, tables->linker, table_offsets, NULL, NULL);
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/* RSDP is in FSEG memory, so allocate it separately */
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{
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AcpiRsdpData rsdp_data = {
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/* ACPI 2.0: 5.2.4.3 RSDP Structure */
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.revision = 2, /* xsdt needs v2 */
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.oem_id = ACPI_BUILD_APPNAME6,
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.xsdt_tbl_offset = &xsdt,
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.rsdt_tbl_offset = NULL,
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};
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build_rsdp(tables->rsdp, tables->linker, &rsdp_data);
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}
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/* Cleanup memory that's no longer used. */
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g_array_free(table_offsets, true);
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}
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static void acpi_build_no_update(void *build_opaque)
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{
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/* nothing, microvm tables don't change at runtime */
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}
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void acpi_setup_microvm(MicrovmMachineState *mms)
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{
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X86MachineState *x86ms = X86_MACHINE(mms);
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AcpiBuildTables tables;
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assert(x86ms->fw_cfg);
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if (!x86_machine_is_acpi_enabled(x86ms)) {
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return;
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}
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acpi_build_tables_init(&tables);
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acpi_build_microvm(&tables, mms);
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/* Now expose it all to Guest */
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acpi_add_rom_blob(acpi_build_no_update, NULL,
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tables.table_data,
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ACPI_BUILD_TABLE_FILE,
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ACPI_BUILD_TABLE_MAX_SIZE);
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acpi_add_rom_blob(acpi_build_no_update, NULL,
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tables.linker->cmd_blob,
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"etc/table-loader", 0);
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acpi_add_rom_blob(acpi_build_no_update, NULL,
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tables.rsdp,
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ACPI_BUILD_RSDP_FILE, 0);
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acpi_build_tables_cleanup(&tables, false);
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}
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