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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH v2 07/12] hw/arm: xenpvh: Break out a common PVH machine
On Tue, 20 Aug 2024, Edgar E. Iglesias wrote:
> From: "Edgar E. Iglesias" <edgar.iglesias@xxxxxxx>
>
> Break out a common Xen PVH machine in preparation for
> adding a x86 Xen PVH machine.
>
> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xxxxxxx>
Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
> ---
> hw/arm/trace-events | 5 -
> hw/arm/xen_arm.c | 198 +++--------------------
> hw/xen/meson.build | 1 +
> hw/xen/trace-events | 4 +
> hw/xen/xen-pvh-common.c | 275 ++++++++++++++++++++++++++++++++
> include/hw/xen/xen-pvh-common.h | 59 +++++++
> 6 files changed, 358 insertions(+), 184 deletions(-)
> create mode 100644 hw/xen/xen-pvh-common.c
> create mode 100644 include/hw/xen/xen-pvh-common.h
>
> diff --git a/hw/arm/trace-events b/hw/arm/trace-events
> index be6c8f720b..c64ad344bd 100644
> --- a/hw/arm/trace-events
> +++ b/hw/arm/trace-events
> @@ -68,10 +68,5 @@ z2_aer915_send_too_long(int8_t msg) "message too long (%i
> bytes)"
> z2_aer915_send(uint8_t reg, uint8_t value) "reg %d value 0x%02x"
> z2_aer915_event(int8_t event, int8_t len) "i2c event =0x%x len=%d bytes"
>
> -# xen_arm.c
> -xen_create_virtio_mmio_devices(int i, int irq, uint64_t base) "Created
> virtio-mmio device %d: irq %d base 0x%"PRIx64
> -xen_init_ram(uint64_t machine_ram_size) "Initialized xen ram with size
> 0x%"PRIx64
> -xen_enable_tpm(uint64_t addr) "Connected tpmdev at address 0x%"PRIx64
> -
> # bcm2838.c
> bcm2838_gic_set_irq(int irq, int level) "gic irq:%d lvl:%d"
> diff --git a/hw/arm/xen_arm.c b/hw/arm/xen_arm.c
> index f0868e7be5..04cb9855af 100644
> --- a/hw/arm/xen_arm.c
> +++ b/hw/arm/xen_arm.c
> @@ -7,44 +7,12 @@
> #include "qemu/osdep.h"
> #include "qemu/error-report.h"
> #include "qapi/qapi-commands-migration.h"
> -#include "qapi/visitor.h"
> #include "hw/boards.h"
> -#include "hw/irq.h"
> -#include "hw/sysbus.h"
> -#include "sysemu/block-backend.h"
> -#include "sysemu/tpm_backend.h"
> #include "sysemu/sysemu.h"
> -#include "hw/xen/xen-hvm-common.h"
> -#include "sysemu/tpm.h"
> +#include "hw/xen/xen-pvh-common.h"
> #include "hw/xen/arch_hvm.h"
> -#include "trace.h"
>
> #define TYPE_XEN_ARM MACHINE_TYPE_NAME("xenpvh")
> -OBJECT_DECLARE_SIMPLE_TYPE(XenArmState, XEN_ARM)
> -
> -static const MemoryListener xen_memory_listener = {
> - .region_add = xen_region_add,
> - .region_del = xen_region_del,
> - .log_start = NULL,
> - .log_stop = NULL,
> - .log_sync = NULL,
> - .log_global_start = NULL,
> - .log_global_stop = NULL,
> - .priority = MEMORY_LISTENER_PRIORITY_ACCEL,
> -};
> -
> -struct XenArmState {
> - /*< private >*/
> - MachineState parent;
> -
> - XenIOState *state;
> -
> - struct {
> - uint64_t tpm_base_addr;
> - } cfg;
> -};
> -
> -static MemoryRegion ram_lo, ram_hi;
>
> /*
> * VIRTIO_MMIO_DEV_SIZE is imported from tools/libs/light/libxl_arm.c under
> Xen
> @@ -57,147 +25,26 @@ static MemoryRegion ram_lo, ram_hi;
> #define NR_VIRTIO_MMIO_DEVICES \
> (GUEST_VIRTIO_MMIO_SPI_LAST - GUEST_VIRTIO_MMIO_SPI_FIRST)
>
> -static void xen_set_irq(void *opaque, int irq, int level)
> -{
> - if (xendevicemodel_set_irq_level(xen_dmod, xen_domid, irq, level)) {
> - error_report("xendevicemodel_set_irq_level failed");
> - }
> -}
> -
> -static void xen_create_virtio_mmio_devices(XenArmState *xam)
> -{
> - int i;
> -
> - for (i = 0; i < NR_VIRTIO_MMIO_DEVICES; i++) {
> - hwaddr base = GUEST_VIRTIO_MMIO_BASE + i * VIRTIO_MMIO_DEV_SIZE;
> - qemu_irq irq = qemu_allocate_irq(xen_set_irq, NULL,
> - GUEST_VIRTIO_MMIO_SPI_FIRST + i);
> -
> - sysbus_create_simple("virtio-mmio", base, irq);
> -
> - trace_xen_create_virtio_mmio_devices(i,
> - GUEST_VIRTIO_MMIO_SPI_FIRST + i,
> - base);
> - }
> -}
> -
> -static void xen_init_ram(MachineState *machine)
> +static void xen_arm_instance_init(Object *obj)
> {
> - MemoryRegion *sysmem = get_system_memory();
> - ram_addr_t block_len, ram_size[GUEST_RAM_BANKS];
> -
> - trace_xen_init_ram(machine->ram_size);
> - if (machine->ram_size <= GUEST_RAM0_SIZE) {
> - ram_size[0] = machine->ram_size;
> - ram_size[1] = 0;
> - block_len = GUEST_RAM0_BASE + ram_size[0];
> - } else {
> - ram_size[0] = GUEST_RAM0_SIZE;
> - ram_size[1] = machine->ram_size - GUEST_RAM0_SIZE;
> - block_len = GUEST_RAM1_BASE + ram_size[1];
> - }
> + XenPVHMachineState *s = XEN_PVH_MACHINE(obj);
>
> - memory_region_init_ram(&xen_memory, NULL, "xen.ram", block_len,
> - &error_fatal);
> + /* Default values. */
> + s->cfg.ram_low = (MemMapEntry) { GUEST_RAM0_BASE, GUEST_RAM0_SIZE };
> + s->cfg.ram_high = (MemMapEntry) { GUEST_RAM1_BASE, GUEST_RAM1_SIZE };
>
> - memory_region_init_alias(&ram_lo, NULL, "xen.ram.lo", &xen_memory,
> - GUEST_RAM0_BASE, ram_size[0]);
> - memory_region_add_subregion(sysmem, GUEST_RAM0_BASE, &ram_lo);
> - if (ram_size[1] > 0) {
> - memory_region_init_alias(&ram_hi, NULL, "xen.ram.hi", &xen_memory,
> - GUEST_RAM1_BASE, ram_size[1]);
> - memory_region_add_subregion(sysmem, GUEST_RAM1_BASE, &ram_hi);
> - }
> -
> - /* Setup support for grants. */
> - memory_region_init_ram(&xen_grants, NULL, "xen.grants", block_len,
> - &error_fatal);
> - memory_region_add_subregion(sysmem, XEN_GRANT_ADDR_OFF, &xen_grants);
> + s->cfg.virtio_mmio_num = NR_VIRTIO_MMIO_DEVICES;
> + s->cfg.virtio_mmio_irq_base = GUEST_VIRTIO_MMIO_SPI_FIRST;
> + s->cfg.virtio_mmio = (MemMapEntry) { GUEST_VIRTIO_MMIO_BASE,
> + VIRTIO_MMIO_DEV_SIZE };
> }
>
> -#ifdef CONFIG_TPM
> -static void xen_enable_tpm(XenArmState *xam)
> -{
> - Error *errp = NULL;
> - DeviceState *dev;
> - SysBusDevice *busdev;
> -
> - TPMBackend *be = qemu_find_tpm_be("tpm0");
> - if (be == NULL) {
> - error_report("Couldn't find tmp0 backend");
> - return;
> - }
> - dev = qdev_new(TYPE_TPM_TIS_SYSBUS);
> - object_property_set_link(OBJECT(dev), "tpmdev", OBJECT(be), &errp);
> - object_property_set_str(OBJECT(dev), "tpmdev", be->id, &errp);
> - busdev = SYS_BUS_DEVICE(dev);
> - sysbus_realize_and_unref(busdev, &error_fatal);
> - sysbus_mmio_map(busdev, 0, xam->cfg.tpm_base_addr);
> -
> - trace_xen_enable_tpm(xam->cfg.tpm_base_addr);
> -}
> -#endif
> -
> -static void xen_arm_init(MachineState *machine)
> -{
> - XenArmState *xam = XEN_ARM(machine);
> -
> - xam->state = g_new0(XenIOState, 1);
> -
> - if (machine->ram_size == 0) {
> - warn_report("%s: ram size not specified. QEMU machine started"
> - " without IOREQ (no emulated devices including virtio)",
> - MACHINE_CLASS(object_get_class(OBJECT(machine)))->desc);
> - return;
> - }
> -
> - xen_init_ram(machine);
> -
> - xen_register_ioreq(xam->state, machine->smp.max_cpus,
> &xen_memory_listener);
> -
> - xen_create_virtio_mmio_devices(xam);
> -
> -#ifdef CONFIG_TPM
> - if (xam->cfg.tpm_base_addr) {
> - xen_enable_tpm(xam);
> - } else {
> - warn_report("tpm-base-addr is not provided. TPM will not be
> enabled");
> - }
> -#endif
> -}
> -
> -#ifdef CONFIG_TPM
> -static void xen_arm_get_tpm_base_addr(Object *obj, Visitor *v,
> - const char *name, void *opaque,
> - Error **errp)
> -{
> - XenArmState *xam = XEN_ARM(obj);
> - uint64_t value = xam->cfg.tpm_base_addr;
> -
> - visit_type_uint64(v, name, &value, errp);
> -}
> -
> -static void xen_arm_set_tpm_base_addr(Object *obj, Visitor *v,
> - const char *name, void *opaque,
> - Error **errp)
> -{
> - XenArmState *xam = XEN_ARM(obj);
> - uint64_t value;
> -
> - if (!visit_type_uint64(v, name, &value, errp)) {
> - return;
> - }
> -
> - xam->cfg.tpm_base_addr = value;
> -}
> -#endif
> -
> static void xen_arm_machine_class_init(ObjectClass *oc, void *data)
> {
> -
> + XenPVHMachineClass *xpc = XEN_PVH_MACHINE_CLASS(oc);
> MachineClass *mc = MACHINE_CLASS(oc);
> +
> mc->desc = "Xen PVH ARM machine";
> - mc->init = xen_arm_init;
>
> /*
> * mc->max_cpus holds the MAX value allowed in the -smp command-line
> opts.
> @@ -218,27 +65,20 @@ static void xen_arm_machine_class_init(ObjectClass *oc,
> void *data)
> * mc->max_cpus, QEMU will bail out with an error message.
> */
> mc->max_cpus = GUEST_MAX_VCPUS;
> - mc->default_machine_opts = "accel=xen";
> - /* Set explicitly here to make sure that real ram_size is passed */
> - mc->default_ram_size = 0;
>
> -#ifdef CONFIG_TPM
> - object_class_property_add(oc, "tpm-base-addr", "uint64_t",
> - xen_arm_get_tpm_base_addr,
> - xen_arm_set_tpm_base_addr,
> - NULL, NULL);
> - object_class_property_set_description(oc, "tpm-base-addr",
> - "Set Base address for TPM
> device.");
> + /* List of supported features known to work on PVH ARM. */
> + xpc->has_tpm = true;
> + xpc->has_virtio_mmio = true;
>
> - machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
> -#endif
> + xen_pvh_class_setup_common_props(xpc);
> }
>
> static const TypeInfo xen_arm_machine_type = {
> .name = TYPE_XEN_ARM,
> - .parent = TYPE_MACHINE,
> + .parent = TYPE_XEN_PVH_MACHINE,
> .class_init = xen_arm_machine_class_init,
> - .instance_size = sizeof(XenArmState),
> + .instance_size = sizeof(XenPVHMachineState),
> + .instance_init = xen_arm_instance_init,
> };
>
> static void xen_arm_machine_register_types(void)
> diff --git a/hw/xen/meson.build b/hw/xen/meson.build
> index d887fa9ba4..4a486e3673 100644
> --- a/hw/xen/meson.build
> +++ b/hw/xen/meson.build
> @@ -15,6 +15,7 @@ xen_specific_ss = ss.source_set()
> xen_specific_ss.add(files(
> 'xen-mapcache.c',
> 'xen-hvm-common.c',
> + 'xen-pvh-common.c',
> ))
> if have_xen_pci_passthrough
> xen_specific_ss.add(files(
> diff --git a/hw/xen/trace-events b/hw/xen/trace-events
> index d1b27f6c11..a07fe41c6d 100644
> --- a/hw/xen/trace-events
> +++ b/hw/xen/trace-events
> @@ -64,6 +64,10 @@ destroy_hvm_domain_cannot_acquire_handle(void) "Cannot
> acquire xenctrl handle"
> destroy_hvm_domain_failed_action(const char *action, int sts, char *errno_s)
> "xc_domain_shutdown failed to issue %s, sts %d, %s"
> destroy_hvm_domain_action(int xen_domid, const char *action) "Issued domain
> %d %s"
>
> +# xen-pvh-common.c
> +xen_create_virtio_mmio_devices(int i, int irq, uint64_t base) "Created
> virtio-mmio device %d: irq %d base 0x%"PRIx64
> +xen_enable_tpm(uint64_t addr) "Connected tpmdev at address 0x%"PRIx64
> +
> # xen-mapcache.c
> xen_map_cache(uint64_t phys_addr) "want 0x%"PRIx64
> xen_remap_bucket(uint64_t index) "index 0x%"PRIx64
> diff --git a/hw/xen/xen-pvh-common.c b/hw/xen/xen-pvh-common.c
> new file mode 100644
> index 0000000000..880e8143d7
> --- /dev/null
> +++ b/hw/xen/xen-pvh-common.c
> @@ -0,0 +1,275 @@
> +/*
> + * QEMU Xen PVH machine - common code.
> + *
> + * Copyright (c) 2024 Advanced Micro Devices, Inc.
> + *
> + * SPDX-License-Identifier: GPL-2.0-or-later
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qemu/error-report.h"
> +#include "qapi/error.h"
> +#include "qapi/visitor.h"
> +#include "hw/boards.h"
> +#include "hw/irq.h"
> +#include "hw/sysbus.h"
> +#include "sysemu/sysemu.h"
> +#include "sysemu/tpm.h"
> +#include "sysemu/tpm_backend.h"
> +#include "hw/xen/xen-pvh-common.h"
> +#include "trace.h"
> +
> +static const MemoryListener xen_memory_listener = {
> + .region_add = xen_region_add,
> + .region_del = xen_region_del,
> + .log_start = NULL,
> + .log_stop = NULL,
> + .log_sync = NULL,
> + .log_global_start = NULL,
> + .log_global_stop = NULL,
> + .priority = MEMORY_LISTENER_PRIORITY_ACCEL,
> +};
> +
> +static void xen_pvh_init_ram(XenPVHMachineState *s,
> + MemoryRegion *sysmem)
> +{
> + MachineState *ms = MACHINE(s);
> + ram_addr_t block_len, ram_size[2];
> +
> + if (ms->ram_size <= s->cfg.ram_low.size) {
> + ram_size[0] = ms->ram_size;
> + ram_size[1] = 0;
> + block_len = s->cfg.ram_low.base + ram_size[0];
> + } else {
> + ram_size[0] = s->cfg.ram_low.size;
> + ram_size[1] = ms->ram_size - s->cfg.ram_low.size;
> + block_len = s->cfg.ram_high.base + ram_size[1];
> + }
> +
> + memory_region_init_ram(&xen_memory, NULL, "xen.ram", block_len,
> + &error_fatal);
> +
> + memory_region_init_alias(&s->ram.low, NULL, "xen.ram.lo", &xen_memory,
> + s->cfg.ram_low.base, ram_size[0]);
> + memory_region_add_subregion(sysmem, s->cfg.ram_low.base, &s->ram.low);
> + if (ram_size[1] > 0) {
> + memory_region_init_alias(&s->ram.high, NULL, "xen.ram.hi",
> &xen_memory,
> + s->cfg.ram_high.base, ram_size[1]);
> + memory_region_add_subregion(sysmem, s->cfg.ram_high.base,
> &s->ram.high);
> + }
> +
> + /* Setup support for grants. */
> + memory_region_init_ram(&xen_grants, NULL, "xen.grants", block_len,
> + &error_fatal);
> + memory_region_add_subregion(sysmem, XEN_GRANT_ADDR_OFF, &xen_grants);
> +}
> +
> +static void xen_set_irq(void *opaque, int irq, int level)
> +{
> + if (xendevicemodel_set_irq_level(xen_dmod, xen_domid, irq, level)) {
> + error_report("xendevicemodel_set_irq_level failed");
> + }
> +}
> +
> +static void xen_create_virtio_mmio_devices(XenPVHMachineState *s)
> +{
> + int i;
> +
> + for (i = 0; i < s->cfg.virtio_mmio_num; i++) {
> + hwaddr base = s->cfg.virtio_mmio.base + i * s->cfg.virtio_mmio.size;
> + qemu_irq irq = qemu_allocate_irq(xen_set_irq, NULL,
> + s->cfg.virtio_mmio_irq_base + i);
> +
> + sysbus_create_simple("virtio-mmio", base, irq);
> +
> + trace_xen_create_virtio_mmio_devices(i,
> + s->cfg.virtio_mmio_irq_base + i,
> + base);
> + }
> +}
> +
> +#ifdef CONFIG_TPM
> +static void xen_enable_tpm(XenPVHMachineState *s)
> +{
> + Error *errp = NULL;
> + DeviceState *dev;
> + SysBusDevice *busdev;
> +
> + TPMBackend *be = qemu_find_tpm_be("tpm0");
> + if (be == NULL) {
> + error_report("Couldn't find tmp0 backend");
> + return;
> + }
> + dev = qdev_new(TYPE_TPM_TIS_SYSBUS);
> + object_property_set_link(OBJECT(dev), "tpmdev", OBJECT(be), &errp);
> + object_property_set_str(OBJECT(dev), "tpmdev", be->id, &errp);
> + busdev = SYS_BUS_DEVICE(dev);
> + sysbus_realize_and_unref(busdev, &error_fatal);
> + sysbus_mmio_map(busdev, 0, s->cfg.tpm.base);
> +
> + trace_xen_enable_tpm(s->cfg.tpm.base);
> +}
> +#endif
> +
> +static void xen_pvh_init(MachineState *ms)
> +{
> + XenPVHMachineState *s = XEN_PVH_MACHINE(ms);
> + XenPVHMachineClass *xpc = XEN_PVH_MACHINE_GET_CLASS(s);
> + MemoryRegion *sysmem = get_system_memory();
> +
> + if (ms->ram_size == 0) {
> + warn_report("%s: ram size not specified. QEMU machine started"
> + " without IOREQ (no emulated devices including virtio)",
> + MACHINE_CLASS(object_get_class(OBJECT(ms)))->desc);
> + return;
> + }
> +
> + xen_pvh_init_ram(s, sysmem);
> + xen_register_ioreq(&s->ioreq, ms->smp.max_cpus, &xen_memory_listener);
> +
> + if (s->cfg.virtio_mmio_num) {
> + xen_create_virtio_mmio_devices(s);
> + }
> +
> +#ifdef CONFIG_TPM
> + if (xpc->has_tpm) {
> + if (s->cfg.tpm.base) {
> + xen_enable_tpm(s);
> + } else {
> + warn_report("tpm-base-addr is not set. TPM will not be enabled");
> + }
> + }
> +#endif
> +
> + /* Call the implementation specific init. */
> + if (xpc->init) {
> + xpc->init(ms);
> + }
> +}
> +
> +#define XEN_PVH_PROP_MEMMAP_SETTER(n, f) \
> +static void xen_pvh_set_ ## n ## _ ## f(Object *obj, Visitor *v, \
> + const char *name, void *opaque, \
> + Error **errp) \
> +{ \
> + XenPVHMachineState *xp = XEN_PVH_MACHINE(obj); \
> + uint64_t value; \
> + \
> + if (!visit_type_size(v, name, &value, errp)) { \
> + return; \
> + } \
> + xp->cfg.n.f = value; \
> +}
> +
> +#define XEN_PVH_PROP_MEMMAP_GETTER(n, f) \
> +static void xen_pvh_get_ ## n ## _ ## f(Object *obj, Visitor *v, \
> + const char *name, void *opaque, \
> + Error **errp) \
> +{ \
> + XenPVHMachineState *xp = XEN_PVH_MACHINE(obj); \
> + uint64_t value = xp->cfg.n.f; \
> + \
> + visit_type_uint64(v, name, &value, errp); \
> +}
> +
> +#define XEN_PVH_PROP_MEMMAP_BASE(n) \
> + XEN_PVH_PROP_MEMMAP_SETTER(n, base) \
> + XEN_PVH_PROP_MEMMAP_GETTER(n, base) \
> +
> +#define XEN_PVH_PROP_MEMMAP_SIZE(n) \
> + XEN_PVH_PROP_MEMMAP_SETTER(n, size) \
> + XEN_PVH_PROP_MEMMAP_GETTER(n, size)
> +
> +#define XEN_PVH_PROP_MEMMAP(n) \
> + XEN_PVH_PROP_MEMMAP_BASE(n) \
> + XEN_PVH_PROP_MEMMAP_SIZE(n)
> +
> +XEN_PVH_PROP_MEMMAP(ram_low)
> +XEN_PVH_PROP_MEMMAP(ram_high)
> +/* TPM only has a base-addr option. */
> +XEN_PVH_PROP_MEMMAP_BASE(tpm)
> +XEN_PVH_PROP_MEMMAP(virtio_mmio)
> +
> +void xen_pvh_class_setup_common_props(XenPVHMachineClass *xpc)
> +{
> + ObjectClass *oc = OBJECT_CLASS(xpc);
> + MachineClass *mc = MACHINE_CLASS(xpc);
> +
> +#define OC_MEMMAP_PROP_BASE(c, prop_name, name) \
> +do { \
> + object_class_property_add(c, prop_name "-base", "uint64_t", \
> + xen_pvh_get_ ## name ## _base, \
> + xen_pvh_set_ ## name ## _base, NULL, NULL); \
> + object_class_property_set_description(oc, prop_name "-base", \
> + "Set base address for " prop_name); \
> +} while (0)
> +
> +#define OC_MEMMAP_PROP_SIZE(c, prop_name, name) \
> +do { \
> + object_class_property_add(c, prop_name "-size", "uint64_t", \
> + xen_pvh_get_ ## name ## _size, \
> + xen_pvh_set_ ## name ## _size, NULL, NULL); \
> + object_class_property_set_description(oc, prop_name "-size", \
> + "Set memory range size for " prop_name); \
> +} while (0)
> +
> +#define OC_MEMMAP_PROP(c, prop_name, name) \
> +do { \
> + OC_MEMMAP_PROP_BASE(c, prop_name, name); \
> + OC_MEMMAP_PROP_SIZE(c, prop_name, name); \
> +} while (0)
> +
> + /*
> + * We provide memmap properties to allow Xen to move things to other
> + * addresses for example when users need to accomodate the memory-map
> + * for 1:1 mapped devices/memory.
> + */
> + OC_MEMMAP_PROP(oc, "ram-low", ram_low);
> + OC_MEMMAP_PROP(oc, "ram-high", ram_high);
> +
> + if (xpc->has_virtio_mmio) {
> + OC_MEMMAP_PROP(oc, "virtio-mmio", virtio_mmio);
> + }
> +
> +#ifdef CONFIG_TPM
> + if (xpc->has_tpm) {
> + object_class_property_add(oc, "tpm-base-addr", "uint64_t",
> + xen_pvh_get_tpm_base,
> + xen_pvh_set_tpm_base,
> + NULL, NULL);
> + object_class_property_set_description(oc, "tpm-base-addr",
> + "Set Base address for TPM device.");
> +
> + machine_class_allow_dynamic_sysbus_dev(mc, TYPE_TPM_TIS_SYSBUS);
> + }
> +#endif
> +}
> +
> +static void xen_pvh_class_init(ObjectClass *oc, void *data)
> +{
> + MachineClass *mc = MACHINE_CLASS(oc);
> +
> + mc->init = xen_pvh_init;
> +
> + mc->desc = "Xen PVH machine";
> + mc->max_cpus = 1;
> + mc->default_machine_opts = "accel=xen";
> + /* Set to zero to make sure that the real ram size is passed. */
> + mc->default_ram_size = 0;
> +}
> +
> +static const TypeInfo xen_pvh_info = {
> + .name = TYPE_XEN_PVH_MACHINE,
> + .parent = TYPE_MACHINE,
> + .abstract = true,
> + .instance_size = sizeof(XenPVHMachineState),
> + .class_size = sizeof(XenPVHMachineClass),
> + .class_init = xen_pvh_class_init,
> +};
> +
> +static void xen_pvh_register_types(void)
> +{
> + type_register_static(&xen_pvh_info);
> +}
> +
> +type_init(xen_pvh_register_types);
> diff --git a/include/hw/xen/xen-pvh-common.h b/include/hw/xen/xen-pvh-common.h
> new file mode 100644
> index 0000000000..77fd98b9fe
> --- /dev/null
> +++ b/include/hw/xen/xen-pvh-common.h
> @@ -0,0 +1,59 @@
> +/*
> + * QEMU Xen PVH machine - common code.
> + *
> + * Copyright (c) 2024 Advanced Micro Devices, Inc.
> + *
> + * SPDX-License-Identifier: GPL-2.0-or-later
> + */
> +
> +#ifndef XEN_PVH_COMMON_H__
> +#define XEN_PVH_COMMON_H__
> +
> +#include <assert.h>
> +#include "hw/sysbus.h"
> +#include "hw/hw.h"
> +#include "hw/xen/xen-hvm-common.h"
> +#include "hw/pci-host/gpex.h"
> +
> +#define TYPE_XEN_PVH_MACHINE MACHINE_TYPE_NAME("xen-pvh-base")
> +OBJECT_DECLARE_TYPE(XenPVHMachineState, XenPVHMachineClass,
> + XEN_PVH_MACHINE)
> +
> +struct XenPVHMachineClass {
> + MachineClass parent;
> +
> + /* PVH implementation specific init. */
> + void (*init)(MachineState *state);
> +
> + /*
> + * Each implementation can optionally enable features that it
> + * supports and are known to work.
> + */
> + bool has_tpm;
> + bool has_virtio_mmio;
> +};
> +
> +struct XenPVHMachineState {
> + /*< private >*/
> + MachineState parent;
> +
> + XenIOState ioreq;
> +
> + struct {
> + MemoryRegion low;
> + MemoryRegion high;
> + } ram;
> +
> + struct {
> + MemMapEntry ram_low, ram_high;
> + MemMapEntry tpm;
> +
> + /* Virtio-mmio */
> + MemMapEntry virtio_mmio;
> + uint32_t virtio_mmio_num;
> + uint32_t virtio_mmio_irq_base;
> + } cfg;
> +};
> +
> +void xen_pvh_class_setup_common_props(XenPVHMachineClass *xpc);
> +#endif
> --
> 2.43.0
>
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