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-rw-r--r--hw/arm/sbsa-ref.c5
-rw-r--r--hw/arm/virt-acpi-build.c175
-rw-r--r--hw/i386/Kconfig1
-rw-r--r--hw/i386/acpi-microvm.c12
-rw-r--r--hw/i386/microvm.c93
-rw-r--r--hw/pci-host/gpex-acpi.c177
-rw-r--r--hw/pci-host/meson.build1
-rw-r--r--include/exec/hwaddr.h5
-rw-r--r--include/hw/arm/virt.h5
-rw-r--r--include/hw/i386/microvm.h32
-rw-r--r--include/hw/pci-host/gpex.h11
-rw-r--r--tests/data/acpi/microvm/DSDT.pciebin0 -> 3023 bytes
-rw-r--r--tests/data/acpi/virt/DSDTbin5200 -> 5196 bytes
-rw-r--r--tests/data/acpi/virt/DSDT.memhpbin6561 -> 6557 bytes
-rw-r--r--tests/data/acpi/virt/DSDT.numamembin5200 -> 5196 bytes
-rw-r--r--tests/qtest/bios-tables-test.c30
16 files changed, 366 insertions, 181 deletions
diff --git a/hw/arm/sbsa-ref.c b/hw/arm/sbsa-ref.c
index 257ada9425..9c3a893bed 100644
--- a/hw/arm/sbsa-ref.c
+++ b/hw/arm/sbsa-ref.c
@@ -80,11 +80,6 @@ enum {
     SBSA_EHCI,
 };
 
-typedef struct MemMapEntry {
-    hwaddr base;
-    hwaddr size;
-} MemMapEntry;
-
 struct SBSAMachineState {
     MachineState parent;
     struct arm_boot_info bootinfo;
diff --git a/hw/arm/virt-acpi-build.c b/hw/arm/virt-acpi-build.c
index 6bff5e3738..9747a6458f 100644
--- a/hw/arm/virt-acpi-build.c
+++ b/hw/arm/virt-acpi-build.c
@@ -44,6 +44,7 @@
 #include "hw/acpi/tpm.h"
 #include "hw/pci/pcie_host.h"
 #include "hw/pci/pci.h"
+#include "hw/pci-host/gpex.h"
 #include "hw/arm/virt.h"
 #include "hw/mem/nvdimm.h"
 #include "hw/platform-bus.h"
@@ -155,176 +156,18 @@ 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, slot_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("_UID", aml_int(0)));
-    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(PCI_SLOT_MAX * PCI_NUM_PINS);
-    for (slot_no = 0; slot_no < PCI_SLOT_MAX; slot_no++) {
-        for (i = 0; i < PCI_NUM_PINS; i++) {
-            int gsi = (i + slot_no) % PCI_NUM_PINS;
-            Aml *pkg = aml_package(4);
-            aml_append(pkg, aml_int((slot_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(i)));
-        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));
+    struct GPEXConfig cfg = {
+        .mmio32 = memmap[VIRT_PCIE_MMIO],
+        .pio    = memmap[VIRT_PCIE_PIO],
+        .ecam   = memmap[ecam_id],
+        .irq    = irq,
+    };
 
     if (use_highmem) {
-        hwaddr base_mmio_high = memmap[VIRT_HIGH_PCIE_MMIO].base;
-        hwaddr size_mmio_high = memmap[VIRT_HIGH_PCIE_MMIO].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));
+        cfg.mmio64 = memmap[VIRT_HIGH_PCIE_MMIO];
     }
 
-    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")));
-
-    /*
-     * Allow OS control for all 5 features:
-     * PCIeHotplug SHPCHotplug PME AER PCIeCapability.
-     */
-    aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1F),
-                              aml_name("CTRL")));
-
-    ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
-    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x08),
-                              aml_name("CDW1")));
-    aml_append(ifctx, ifctx1);
-
-    ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
-    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x10),
-                              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_or(aml_name("CDW1"), aml_int(4),
-                               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_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);
+    acpi_dsdt_add_gpex(scope, &cfg);
 }
 
 static void acpi_dsdt_add_gpio(Aml *scope, const MemMapEntry *gpio_memmap,
diff --git a/hw/i386/Kconfig b/hw/i386/Kconfig
index d0bd8b537d..32aa15533b 100644
--- a/hw/i386/Kconfig
+++ b/hw/i386/Kconfig
@@ -104,6 +104,7 @@ config MICROVM
     select MC146818RTC
     select VIRTIO_MMIO
     select ACPI_HW_REDUCED
+    select PCI_EXPRESS_GENERIC_BRIDGE
 
 config X86_IOMMU
     bool
diff --git a/hw/i386/acpi-microvm.c b/hw/i386/acpi-microvm.c
index df39c5d3bd..f16f231195 100644
--- a/hw/i386/acpi-microvm.c
+++ b/hw/i386/acpi-microvm.c
@@ -33,6 +33,8 @@
 #include "hw/boards.h"
 #include "hw/i386/fw_cfg.h"
 #include "hw/i386/microvm.h"
+#include "hw/pci/pci.h"
+#include "hw/pci/pcie_host.h"
 #include "hw/virtio/virtio-mmio.h"
 
 #include "acpi-common.h"
@@ -87,6 +89,15 @@ static void acpi_dsdt_add_virtio(Aml *scope,
     }
 }
 
+static void acpi_dsdt_add_pci(Aml *scope, MicrovmMachineState *mms)
+{
+    if (mms->pcie != ON_OFF_AUTO_ON) {
+        return;
+    }
+
+    acpi_dsdt_add_gpex(scope, &mms->gpex);
+}
+
 static void
 build_dsdt_microvm(GArray *table_data, BIOSLinker *linker,
                    MicrovmMachineState *mms)
@@ -112,6 +123,7 @@ build_dsdt_microvm(GArray *table_data, BIOSLinker *linker,
                   GED_MMIO_IRQ, AML_SYSTEM_MEMORY, GED_MMIO_BASE);
     acpi_dsdt_add_power_button(sb_scope);
     acpi_dsdt_add_virtio(sb_scope, mms);
+    acpi_dsdt_add_pci(sb_scope, mms);
     aml_append(dsdt, sb_scope);
 
     /* ACPI 5.0: Table 7-209 System State Package */
diff --git a/hw/i386/microvm.c b/hw/i386/microvm.c
index aedcae3426..73a7a142b4 100644
--- a/hw/i386/microvm.c
+++ b/hw/i386/microvm.c
@@ -46,6 +46,7 @@
 #include "hw/virtio/virtio-mmio.h"
 #include "hw/acpi/acpi.h"
 #include "hw/acpi/generic_event_device.h"
+#include "hw/pci-host/gpex.h"
 
 #include "cpu.h"
 #include "elf.h"
@@ -101,6 +102,55 @@ static void microvm_gsi_handler(void *opaque, int n, int level)
     qemu_set_irq(s->ioapic_irq[n], level);
 }
 
+static void create_gpex(MicrovmMachineState *mms)
+{
+    X86MachineState *x86ms = X86_MACHINE(mms);
+    MemoryRegion *mmio32_alias;
+    MemoryRegion *mmio64_alias;
+    MemoryRegion *mmio_reg;
+    MemoryRegion *ecam_alias;
+    MemoryRegion *ecam_reg;
+    DeviceState *dev;
+    int i;
+
+    dev = qdev_new(TYPE_GPEX_HOST);
+    sysbus_realize_and_unref(SYS_BUS_DEVICE(dev), &error_fatal);
+
+    /* Map only the first size_ecam bytes of ECAM space */
+    ecam_alias = g_new0(MemoryRegion, 1);
+    ecam_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 0);
+    memory_region_init_alias(ecam_alias, OBJECT(dev), "pcie-ecam",
+                             ecam_reg, 0, mms->gpex.ecam.size);
+    memory_region_add_subregion(get_system_memory(),
+                                mms->gpex.ecam.base, ecam_alias);
+
+    /* Map the MMIO window into system address space so as to expose
+     * the section of PCI MMIO space which starts at the same base address
+     * (ie 1:1 mapping for that part of PCI MMIO space visible through
+     * the window).
+     */
+    mmio_reg = sysbus_mmio_get_region(SYS_BUS_DEVICE(dev), 1);
+    if (mms->gpex.mmio32.size) {
+        mmio32_alias = g_new0(MemoryRegion, 1);
+        memory_region_init_alias(mmio32_alias, OBJECT(dev), "pcie-mmio32", mmio_reg,
+                                 mms->gpex.mmio32.base, mms->gpex.mmio32.size);
+        memory_region_add_subregion(get_system_memory(),
+                                    mms->gpex.mmio32.base, mmio32_alias);
+    }
+    if (mms->gpex.mmio64.size) {
+        mmio64_alias = g_new0(MemoryRegion, 1);
+        memory_region_init_alias(mmio64_alias, OBJECT(dev), "pcie-mmio64", mmio_reg,
+                                 mms->gpex.mmio64.base, mms->gpex.mmio64.size);
+        memory_region_add_subregion(get_system_memory(),
+                                    mms->gpex.mmio64.base, mmio64_alias);
+    }
+
+    for (i = 0; i < GPEX_NUM_IRQS; i++) {
+        sysbus_connect_irq(SYS_BUS_DEVICE(dev), i,
+                           x86ms->gsi[mms->gpex.irq + i]);
+    }
+}
+
 static void microvm_devices_init(MicrovmMachineState *mms)
 {
     X86MachineState *x86ms = X86_MACHINE(mms);
@@ -147,6 +197,21 @@ static void microvm_devices_init(MicrovmMachineState *mms)
         x86ms->acpi_dev = HOTPLUG_HANDLER(dev);
     }
 
+    if (x86_machine_is_acpi_enabled(x86ms) && mms->pcie == ON_OFF_AUTO_ON) {
+        /* use topmost 25% of the address space available */
+        hwaddr phys_size = (hwaddr)1 << X86_CPU(first_cpu)->phys_bits;
+        if (phys_size > 0x1000000ll) {
+            mms->gpex.mmio64.size = phys_size / 4;
+            mms->gpex.mmio64.base = phys_size - mms->gpex.mmio64.size;
+        }
+        mms->gpex.mmio32.base = PCIE_MMIO_BASE;
+        mms->gpex.mmio32.size = PCIE_MMIO_SIZE;
+        mms->gpex.ecam.base   = PCIE_ECAM_BASE;
+        mms->gpex.ecam.size   = PCIE_ECAM_SIZE;
+        mms->gpex.irq         = PCIE_IRQ_BASE;
+        create_gpex(mms);
+    }
+
     if (mms->pic == ON_OFF_AUTO_ON || mms->pic == ON_OFF_AUTO_AUTO) {
         qemu_irq *i8259;
 
@@ -324,6 +389,9 @@ static void microvm_fix_kernel_cmdline(MachineState *machine)
 static void microvm_device_pre_plug_cb(HotplugHandler *hotplug_dev,
                                        DeviceState *dev, Error **errp)
 {
+    X86CPU *cpu = X86_CPU(dev);
+
+    cpu->host_phys_bits = true; /* need reliable phys-bits */
     x86_cpu_pre_plug(hotplug_dev, dev, errp);
 }
 
@@ -446,6 +514,23 @@ static void microvm_machine_set_rtc(Object *obj, Visitor *v, const char *name,
     visit_type_OnOffAuto(v, name, &mms->rtc, errp);
 }
 
+static void microvm_machine_get_pcie(Object *obj, Visitor *v, const char *name,
+                                     void *opaque, Error **errp)
+{
+    MicrovmMachineState *mms = MICROVM_MACHINE(obj);
+    OnOffAuto pcie = mms->pcie;
+
+    visit_type_OnOffAuto(v, name, &pcie, errp);
+}
+
+static void microvm_machine_set_pcie(Object *obj, Visitor *v, const char *name,
+                                     void *opaque, Error **errp)
+{
+    MicrovmMachineState *mms = MICROVM_MACHINE(obj);
+
+    visit_type_OnOffAuto(v, name, &mms->pcie, errp);
+}
+
 static bool microvm_machine_get_isa_serial(Object *obj, Error **errp)
 {
     MicrovmMachineState *mms = MICROVM_MACHINE(obj);
@@ -521,6 +606,7 @@ static void microvm_machine_initfn(Object *obj)
     mms->pic = ON_OFF_AUTO_AUTO;
     mms->pit = ON_OFF_AUTO_AUTO;
     mms->rtc = ON_OFF_AUTO_AUTO;
+    mms->pcie = ON_OFF_AUTO_AUTO;
     mms->isa_serial = true;
     mms->option_roms = true;
     mms->auto_kernel_cmdline = true;
@@ -587,6 +673,13 @@ static void microvm_class_init(ObjectClass *oc, void *data)
     object_class_property_set_description(oc, MICROVM_MACHINE_RTC,
         "Enable MC146818 RTC");
 
+    object_class_property_add(oc, MICROVM_MACHINE_PCIE, "OnOffAuto",
+                              microvm_machine_get_pcie,
+                              microvm_machine_set_pcie,
+                              NULL, NULL);
+    object_class_property_set_description(oc, MICROVM_MACHINE_PCIE,
+        "Enable PCIe");
+
     object_class_property_add_bool(oc, MICROVM_MACHINE_ISA_SERIAL,
                                    microvm_machine_get_isa_serial,
                                    microvm_machine_set_isa_serial);
diff --git a/hw/pci-host/gpex-acpi.c b/hw/pci-host/gpex-acpi.c
new file mode 100644
index 0000000000..dbb350a837
--- /dev/null
+++ b/hw/pci-host/gpex-acpi.c
@@ -0,0 +1,177 @@
+#include "qemu/osdep.h"
+#include "hw/acpi/aml-build.h"
+#include "hw/pci-host/gpex.h"
+
+void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *cfg)
+{
+    int nr_pcie_buses = cfg->ecam.size / PCIE_MMCFG_SIZE_MIN;
+    Aml *method, *crs, *ifctx, *UUID, *ifctx1, *elsectx, *buf;
+    int i, slot_no;
+
+    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("_UID", aml_int(0)));
+    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(PCI_SLOT_MAX * PCI_NUM_PINS);
+    for (slot_no = 0; slot_no < PCI_SLOT_MAX; slot_no++) {
+        for (i = 0; i < PCI_NUM_PINS; i++) {
+            int gsi = (i + slot_no) % PCI_NUM_PINS;
+            Aml *pkg = aml_package(4);
+            aml_append(pkg, aml_int((slot_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 = cfg->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(i)));
+        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(cfg->ecam.base)));
+    aml_append(dev, method);
+
+    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));
+    if (cfg->mmio32.size) {
+        aml_append(rbuf,
+                   aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
+                                    AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
+                                    cfg->mmio32.base,
+                                    cfg->mmio32.base + cfg->mmio32.size - 1,
+                                    0x0000,
+                                    cfg->mmio32.size));
+    }
+    if (cfg->pio.size) {
+        aml_append(rbuf,
+                   aml_dword_io(AML_MIN_FIXED, AML_MAX_FIXED, AML_POS_DECODE,
+                                AML_ENTIRE_RANGE, 0x0000, 0x0000,
+                                cfg->pio.size - 1,
+                                cfg->pio.base,
+                                cfg->pio.size));
+    }
+    if (cfg->mmio64.size) {
+        aml_append(rbuf,
+                   aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED,
+                                    AML_NON_CACHEABLE, AML_READ_WRITE, 0x0000,
+                                    cfg->mmio64.base,
+                                    cfg->mmio64.base + cfg->mmio64.size - 1,
+                                    0x0000,
+                                    cfg->mmio64.size));
+    }
+    aml_append(dev, aml_name_decl("_CRS", rbuf));
+
+    /* 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")));
+
+    /*
+     * Allow OS control for all 5 features:
+     * PCIeHotplug SHPCHotplug PME AER PCIeCapability.
+     */
+    aml_append(ifctx, aml_and(aml_name("CTRL"), aml_int(0x1F),
+                              aml_name("CTRL")));
+
+    ifctx1 = aml_if(aml_lnot(aml_equal(aml_arg(1), aml_int(0x1))));
+    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x08),
+                              aml_name("CDW1")));
+    aml_append(ifctx, ifctx1);
+
+    ifctx1 = aml_if(aml_lnot(aml_equal(aml_name("CDW3"), aml_name("CTRL"))));
+    aml_append(ifctx1, aml_or(aml_name("CDW1"), aml_int(0x10),
+                              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_or(aml_name("CDW1"), aml_int(4),
+                               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_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,
+                         cfg->ecam.base,
+                         cfg->ecam.base + cfg->ecam.size - 1,
+                         0x0000,
+                         cfg->ecam.size));
+    aml_append(dev_res0, aml_name_decl("_CRS", crs));
+    aml_append(dev, dev_res0);
+    aml_append(scope, dev);
+}
diff --git a/hw/pci-host/meson.build b/hw/pci-host/meson.build
index cd52f6ff1c..e6d1b89684 100644
--- a/hw/pci-host/meson.build
+++ b/hw/pci-host/meson.build
@@ -3,6 +3,7 @@ pci_ss.add(when: 'CONFIG_PAM', if_true: files('pam.c'))
 pci_ss.add(when: 'CONFIG_PCI_BONITO', if_true: files('bonito.c'))
 pci_ss.add(when: 'CONFIG_PCI_EXPRESS_DESIGNWARE', if_true: files('designware.c'))
 pci_ss.add(when: 'CONFIG_PCI_EXPRESS_GENERIC_BRIDGE', if_true: files('gpex.c'))
+pci_ss.add(when: 'CONFIG_ACPI', if_true: files('gpex-acpi.c'))
 pci_ss.add(when: 'CONFIG_PCI_EXPRESS_Q35', if_true: files('q35.c'))
 pci_ss.add(when: 'CONFIG_PCI_EXPRESS_XILINX', if_true: files('xilinx-pcie.c'))
 pci_ss.add(when: 'CONFIG_PCI_I440FX', if_true: files('i440fx.c'))
diff --git a/include/exec/hwaddr.h b/include/exec/hwaddr.h
index a71c93cc81..8f16d179a8 100644
--- a/include/exec/hwaddr.h
+++ b/include/exec/hwaddr.h
@@ -18,4 +18,9 @@ typedef uint64_t hwaddr;
 #define HWADDR_PRIx PRIx64
 #define HWADDR_PRIX PRIX64
 
+typedef struct MemMapEntry {
+    hwaddr base;
+    hwaddr size;
+} MemMapEntry;
+
 #endif
diff --git a/include/hw/arm/virt.h b/include/hw/arm/virt.h
index d018a4f297..655b895d5e 100644
--- a/include/hw/arm/virt.h
+++ b/include/hw/arm/virt.h
@@ -111,11 +111,6 @@ typedef enum VirtGICType {
     VIRT_GIC_VERSION_NOSEL,
 } VirtGICType;
 
-typedef struct MemMapEntry {
-    hwaddr base;
-    hwaddr size;
-} MemMapEntry;
-
 struct VirtMachineClass {
     MachineClass parent;
     bool disallow_affinity_adjustment;
diff --git a/include/hw/i386/microvm.h b/include/hw/i386/microvm.h
index 3b9fd4ff17..91b064575d 100644
--- a/include/hw/i386/microvm.h
+++ b/include/hw/i386/microvm.h
@@ -25,8 +25,31 @@
 #include "hw/boards.h"
 #include "hw/i386/x86.h"
 #include "hw/acpi/acpi_dev_interface.h"
+#include "hw/pci-host/gpex.h"
 #include "qom/object.h"
 
+/*
+ *  IRQ    |  pc        | microvm (acpi=on)
+ * --------+------------+------------------
+ *   0     |  pit       |
+ *   1     |  kbd       |
+ *   2     |  cascade   |
+ *   3     |  serial 1  |
+ *   4     |  serial 0  | serial
+ *   5     |  -         |
+ *   6     |  floppy    |
+ *   7     |  parallel  |
+ *   8     |  rtc       | rtc (rtc=on)
+ *   9     |  acpi      | acpi (ged)
+ *  10     |  pci lnk   |
+ *  11     |  pci lnk   |
+ *  12     |  ps2       | pcie
+ *  13     |  fpu       | pcie
+ *  14     |  ide 0     | pcie
+ *  15     |  ide 1     | pcie
+ *  16-23  |  pci gsi   | virtio
+ */
+
 /* Platform virtio definitions */
 #define VIRTIO_MMIO_BASE      0xfeb00000
 #define VIRTIO_NUM_TRANSPORTS 8
@@ -37,10 +60,17 @@
 #define GED_MMIO_BASE_REGS    (GED_MMIO_BASE + 0x200)
 #define GED_MMIO_IRQ          9
 
+#define PCIE_MMIO_BASE        0xc0000000
+#define PCIE_MMIO_SIZE        0x20000000
+#define PCIE_ECAM_BASE        0xe0000000
+#define PCIE_ECAM_SIZE        0x10000000
+#define PCIE_IRQ_BASE         12
+
 /* Machine type options */
 #define MICROVM_MACHINE_PIT                 "pit"
 #define MICROVM_MACHINE_PIC                 "pic"
 #define MICROVM_MACHINE_RTC                 "rtc"
+#define MICROVM_MACHINE_PCIE                "pcie"
 #define MICROVM_MACHINE_ISA_SERIAL          "isa-serial"
 #define MICROVM_MACHINE_OPTION_ROMS         "x-option-roms"
 #define MICROVM_MACHINE_AUTO_KERNEL_CMDLINE "auto-kernel-cmdline"
@@ -58,6 +88,7 @@ struct MicrovmMachineState {
     OnOffAuto pic;
     OnOffAuto pit;
     OnOffAuto rtc;
+    OnOffAuto pcie;
     bool isa_serial;
     bool option_roms;
     bool auto_kernel_cmdline;
@@ -67,6 +98,7 @@ struct MicrovmMachineState {
     bool kernel_cmdline_fixed;
     Notifier machine_done;
     Notifier powerdown_req;
+    struct GPEXConfig gpex;
 };
 
 #define TYPE_MICROVM_MACHINE   MACHINE_TYPE_NAME("microvm")
diff --git a/include/hw/pci-host/gpex.h b/include/hw/pci-host/gpex.h
index 7abdb8b406..d52ea80d4e 100644
--- a/include/hw/pci-host/gpex.h
+++ b/include/hw/pci-host/gpex.h
@@ -20,6 +20,7 @@
 #ifndef HW_GPEX_H
 #define HW_GPEX_H
 
+#include "exec/hwaddr.h"
 #include "hw/sysbus.h"
 #include "hw/pci/pci.h"
 #include "hw/pci/pcie_host.h"
@@ -52,6 +53,16 @@ struct GPEXHost {
     int irq_num[GPEX_NUM_IRQS];
 };
 
+struct GPEXConfig {
+    MemMapEntry ecam;
+    MemMapEntry mmio32;
+    MemMapEntry mmio64;
+    MemMapEntry pio;
+    int         irq;
+};
+
 int gpex_set_irq_num(GPEXHost *s, int index, int gsi);
 
+void acpi_dsdt_add_gpex(Aml *scope, struct GPEXConfig *cfg);
+
 #endif /* HW_GPEX_H */
diff --git a/tests/data/acpi/microvm/DSDT.pcie b/tests/data/acpi/microvm/DSDT.pcie
new file mode 100644
index 0000000000..4b765541e3
--- /dev/null
+++ b/tests/data/acpi/microvm/DSDT.pcie
Binary files differdiff --git a/tests/data/acpi/virt/DSDT b/tests/data/acpi/virt/DSDT
index 9b002836f3..bc519abff9 100644
--- a/tests/data/acpi/virt/DSDT
+++ b/tests/data/acpi/virt/DSDT
Binary files differdiff --git a/tests/data/acpi/virt/DSDT.memhp b/tests/data/acpi/virt/DSDT.memhp
index 545a18c365..54728e2b4b 100644
--- a/tests/data/acpi/virt/DSDT.memhp
+++ b/tests/data/acpi/virt/DSDT.memhp
Binary files differdiff --git a/tests/data/acpi/virt/DSDT.numamem b/tests/data/acpi/virt/DSDT.numamem
index 9b002836f3..bc519abff9 100644
--- a/tests/data/acpi/virt/DSDT.numamem
+++ b/tests/data/acpi/virt/DSDT.numamem
Binary files differdiff --git a/tests/qtest/bios-tables-test.c b/tests/qtest/bios-tables-test.c
index 67d1bed082..e15f36c8c7 100644
--- a/tests/qtest/bios-tables-test.c
+++ b/tests/qtest/bios-tables-test.c
@@ -1086,20 +1086,37 @@ static void test_acpi_virt_tcg_memhp(void)
 
 }
 
+static void test_acpi_microvm_prepare(test_data *data)
+{
+    memset(data, 0, sizeof(*data));
+    data->machine = "microvm";
+    data->required_struct_types = NULL; /* no smbios */
+    data->required_struct_types_len = 0;
+    data->blkdev = "virtio-blk-device";
+}
+
 static void test_acpi_microvm_tcg(void)
 {
     test_data data;
 
-    memset(&data, 0, sizeof(data));
-    data.machine = "microvm";
-    data.required_struct_types = NULL; /* no smbios */
-    data.required_struct_types_len = 0;
-    data.blkdev = "virtio-blk-device";
+    test_acpi_microvm_prepare(&data);
     test_acpi_one(" -machine microvm,acpi=on,rtc=off",
                   &data);
     free_test_data(&data);
 }
 
+static void test_acpi_microvm_pcie_tcg(void)
+{
+    test_data data;
+
+    test_acpi_microvm_prepare(&data);
+    data.variant = ".pcie";
+    data.tcg_only = true; /* need constant host-phys-bits */
+    test_acpi_one(" -machine microvm,acpi=on,rtc=off,pcie=on",
+                  &data);
+    free_test_data(&data);
+}
+
 static void test_acpi_virt_tcg_numamem(void)
 {
     test_data data = {
@@ -1224,6 +1241,9 @@ int main(int argc, char *argv[])
         qtest_add_func("acpi/piix4/acpihmat", test_acpi_piix4_tcg_acpi_hmat);
         qtest_add_func("acpi/q35/acpihmat", test_acpi_q35_tcg_acpi_hmat);
         qtest_add_func("acpi/microvm", test_acpi_microvm_tcg);
+        if (strcmp(arch, "x86_64") == 0) {
+            qtest_add_func("acpi/microvm/pcie", test_acpi_microvm_pcie_tcg);
+        }
     } else if (strcmp(arch, "aarch64") == 0) {
         qtest_add_func("acpi/virt", test_acpi_virt_tcg);
         qtest_add_func("acpi/virt/numamem", test_acpi_virt_tcg_numamem);