/* Declarations for use by board files for creating devices. */ #ifndef HW_BOARDS_H #define HW_BOARDS_H #include "exec/memory.h" #include "sysemu/hostmem.h" #include "sysemu/blockdev.h" #include "qemu/accel.h" #include "qapi/qapi-types-machine.h" #include "qemu/module.h" #include "qom/object.h" #include "hw/core/cpu.h" #define TYPE_MACHINE_SUFFIX "-machine" /* Machine class name that needs to be used for class-name-based machine * type lookup to work. */ #define MACHINE_TYPE_NAME(machinename) (machinename TYPE_MACHINE_SUFFIX) #define TYPE_MACHINE "machine" #undef MACHINE /* BSD defines it and QEMU does not use it */ OBJECT_DECLARE_TYPE(MachineState, MachineClass, MACHINE) extern MachineState *current_machine; void machine_run_board_init(MachineState *machine, const char *mem_path, Error **errp); bool machine_usb(MachineState *machine); int machine_phandle_start(MachineState *machine); bool machine_dump_guest_core(MachineState *machine); bool machine_mem_merge(MachineState *machine); HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine); void machine_set_cpu_numa_node(MachineState *machine, const CpuInstanceProperties *props, Error **errp); void machine_parse_smp_config(MachineState *ms, const SMPConfiguration *config, Error **errp); /** * machine_class_allow_dynamic_sysbus_dev: Add type to list of valid devices * @mc: Machine class * @type: type to allow (should be a subtype of TYPE_SYS_BUS_DEVICE) * * Add the QOM type @type to the list of devices of which are subtypes * of TYPE_SYS_BUS_DEVICE but which are still permitted to be dynamically * created (eg by the user on the command line with -device). * By default if the user tries to create any devices on the command line * that are subtypes of TYPE_SYS_BUS_DEVICE they will get an error message; * for the special cases which are permitted for this machine model, the * machine model class init code must call this function to add them * to the list of specifically permitted devices. */ void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type); /** * device_type_is_dynamic_sysbus: Check if type is an allowed sysbus device * type for the machine class. * @mc: Machine class * @type: type to check (should be a subtype of TYPE_SYS_BUS_DEVICE) * * Returns: true if @type is a type in the machine's list of * dynamically pluggable sysbus devices; otherwise false. * * Check if the QOM type @type is in the list of allowed sysbus device * types (see machine_class_allowed_dynamic_sysbus_dev()). * Note that if @type has a parent type in the list, it is allowed too. */ bool device_type_is_dynamic_sysbus(MachineClass *mc, const char *type); /** * device_is_dynamic_sysbus: test whether device is a dynamic sysbus device * @mc: Machine class * @dev: device to check * * Returns: true if @dev is a sysbus device on the machine's list * of dynamically pluggable sysbus devices; otherwise false. * * This function checks whether @dev is a valid dynamic sysbus device, * by first confirming that it is a sysbus device and then checking it * against the list of permitted dynamic sysbus devices which has been * set up by the machine using machine_class_allow_dynamic_sysbus_dev(). * * It is valid to call this with something that is not a subclass of * TYPE_SYS_BUS_DEVICE; the function will return false in this case. * This allows hotplug callback functions to be written as: * if (device_is_dynamic_sysbus(mc, dev)) { * handle dynamic sysbus case; * } else if (some other kind of hotplug) { * handle that; * } */ bool device_is_dynamic_sysbus(MachineClass *mc, DeviceState *dev); /* * Checks that backend isn't used, preps it for exclusive usage and * returns migratable MemoryRegion provided by backend. */ MemoryRegion *machine_consume_memdev(MachineState *machine, HostMemoryBackend *backend); /** * CPUArchId: * @arch_id - architecture-dependent CPU ID of present or possible CPU * @cpu - pointer to corresponding CPU object if it's present on NULL otherwise * @type - QOM class name of possible @cpu object * @props - CPU object properties, initialized by board * #vcpus_count - number of threads provided by @cpu object */ typedef struct CPUArchId { uint64_t arch_id; int64_t vcpus_count; CpuInstanceProperties props; Object *cpu; const char *type; } CPUArchId; /** * CPUArchIdList: * @len - number of @CPUArchId items in @cpus array * @cpus - array of present or possible CPUs for current machine configuration */ typedef struct { int len; CPUArchId cpus[]; } CPUArchIdList; /** * SMPCompatProps: * @prefer_sockets - whether sockets are preferred over cores in smp parsing * @dies_supported - whether dies are supported by the machine * @clusters_supported - whether clusters are supported by the machine */ typedef struct { bool prefer_sockets; bool dies_supported; bool clusters_supported; } SMPCompatProps; /** * MachineClass: * @deprecation_reason: If set, the machine is marked as deprecated. The * string should provide some clear information about what to use instead. * @max_cpus: maximum number of CPUs supported. Default: 1 * @min_cpus: minimum number of CPUs supported. Default: 1 * @default_cpus: number of CPUs instantiated if none are specified. Default: 1 * @is_default: * If true QEMU will use this machine by default if no '-M' option is given. * @get_hotplug_handler: this function is called during bus-less * device hotplug. If defined it returns pointer to an instance * of HotplugHandler object, which handles hotplug operation * for a given @dev. It may return NULL if @dev doesn't require * any actions to be performed by hotplug handler. * @cpu_index_to_instance_props: * used to provide @cpu_index to socket/core/thread number mapping, allowing * legacy code to perform maping from cpu_index to topology properties * Returns: tuple of socket/core/thread ids given cpu_index belongs to. * used to provide @cpu_index to socket number mapping, allowing * a machine to group CPU threads belonging to the same socket/package * Returns: socket number given cpu_index belongs to. * @hw_version: * Value of QEMU_VERSION when the machine was added to QEMU. * Set only by old machines because they need to keep * compatibility on code that exposed QEMU_VERSION to guests in * the past (and now use qemu_hw_version()). * @possible_cpu_arch_ids: * Returns an array of @CPUArchId architecture-dependent CPU IDs * which includes CPU IDs for present and possible to hotplug CPUs. * Caller is responsible for freeing returned list. * @get_default_cpu_node_id: * returns default board specific node_id value for CPU slot specified by * index @idx in @ms->possible_cpus[] * @has_hotpluggable_cpus: * If true, board supports CPUs creation with -device/device_add. * @default_cpu_type: * specifies default CPU_TYPE, which will be used for parsing target * specific features and for creating CPUs if CPU name wasn't provided * explicitly at CLI * @minimum_page_bits: * If non-zero, the board promises never to create a CPU with a page size * smaller than this, so QEMU can use a more efficient larger page * size than the target architecture's minimum. (Attempting to create * such a CPU will fail.) Note that changing this is a migration * compatibility break for the machine. * @ignore_memory_transaction_failures: * If this is flag is true then the CPU will ignore memory transaction * failures which should cause the CPU to take an exception due to an * access to an unassigned physical address; the transaction will instead * return zero (for a read) or be ignored (for a write). This should be * set only by legacy board models which rely on the old RAZ/WI behaviour * for handling devices that QEMU does not yet model. New board models * should instead use "unimplemented-device" for all memory ranges where * the guest will attempt to probe for a device that QEMU doesn't * implement and a stub device is required. * @kvm_type: * Return the type of KVM corresponding to the kvm-type string option or * computed based on other criteria such as the host kernel capabilities. * kvm-type may be NULL if it is not needed. * @numa_mem_supported: * true if '--numa node.mem' option is supported and false otherwise * @hotplug_allowed: * If the hook is provided, then it'll be called for each device * hotplug to check whether the device hotplug is allowed. Return * true to grant allowance or false to reject the hotplug. When * false is returned, an error must be set to show the reason of * the rejection. If the hook is not provided, all hotplug will be * allowed. * @default_ram_id: * Specifies inital RAM MemoryRegion name to be used for default backend * creation if user explicitly hasn't specified backend with "memory-backend" * property. * It also will be used as a way to optin into "-m" option support. * If it's not set by board, '-m' will be ignored and generic code will * not create default RAM MemoryRegion. * @fixup_ram_size: * Amends user provided ram size (with -m option) using machine * specific algorithm. To be used by old machine types for compat * purposes only. * Applies only to default memory backend, i.e., explicit memory backend * wasn't used. */ struct MachineClass { /*< private >*/ ObjectClass parent_class; /*< public >*/ const char *family; /* NULL iff @name identifies a standalone machtype */ char *name; const char *alias; const char *desc; const char *deprecation_reason; void (*init)(MachineState *state); void (*reset)(MachineState *state); void (*wakeup)(MachineState *state); int (*kvm_type)(MachineState *machine, const char *arg); BlockInterfaceType block_default_type; int units_per_default_bus; int max_cpus; int min_cpus; int default_cpus; unsigned int no_serial:1, no_parallel:1, no_floppy:1, no_cdrom:1, no_sdcard:1, pci_allow_0_address:1, legacy_fw_cfg_order:1; bool is_default; const char *default_machine_opts; const char *default_boot_order; const char *default_display; GPtrArray *compat_props; const char *hw_version; ram_addr_t default_ram_size; const char *default_cpu_type; bool default_kernel_irqchip_split; bool option_rom_has_mr; bool rom_file_has_mr; int minimum_page_bits; bool has_hotpluggable_cpus; bool ignore_memory_transaction_failures; int numa_mem_align_shift; const char **valid_cpu_types; strList *allowed_dynamic_sysbus_devices; bool auto_enable_numa_with_memhp; bool auto_enable_numa_with_memdev; bool ignore_boot_device_suffixes; bool smbus_no_migration_support; bool nvdimm_supported; bool numa_mem_supported; bool auto_enable_numa; SMPCompatProps smp_props; const char *default_ram_id; HotplugHandler *(*get_hotplug_handler)(MachineState *machine, DeviceState *dev); bool (*hotplug_allowed)(MachineState *state, DeviceState *dev, Error **errp); CpuInstanceProperties (*cpu_index_to_instance_props)(MachineState *machine, unsigned cpu_index); const CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine); int64_t (*get_default_cpu_node_id)(const MachineState *ms, int idx); ram_addr_t (*fixup_ram_size)(ram_addr_t size); }; /** * DeviceMemoryState: * @base: address in guest physical address space where the memory * address space for memory devices starts * @mr: address space container for memory devices */ typedef struct DeviceMemoryState { hwaddr base; MemoryRegion mr; } DeviceMemoryState; /** * CpuTopology: * @cpus: the number of present logical processors on the machine * @sockets: the number of sockets on the machine * @dies: the number of dies in one socket * @clusters: the number of clusters in one die * @cores: the number of cores in one cluster * @threads: the number of threads in one core * @max_cpus: the maximum number of logical processors on the machine */ typedef struct CpuTopology { unsigned int cpus; unsigned int sockets; unsigned int dies; unsigned int clusters; unsigned int cores; unsigned int threads; unsigned int max_cpus; } CpuTopology; /** * MachineState: */ struct MachineState { /*< private >*/ Object parent_obj; /*< public >*/ void *fdt; char *dtb; char *dumpdtb; int phandle_start; char *dt_compatible; bool dump_guest_core; bool mem_merge; bool usb; bool usb_disabled; char *firmware; bool iommu; bool suppress_vmdesc; bool enable_graphics; ConfidentialGuestSupport *cgs; HostMemoryBackend *memdev; /* * convenience alias to ram_memdev_id backend memory region * or to numa container memory region */ MemoryRegion *ram; DeviceMemoryState *device_memory; ram_addr_t ram_size; ram_addr_t maxram_size; uint64_t ram_slots; BootConfiguration boot_config; char *kernel_filename; char *kernel_cmdline; char *initrd_filename; const char *cpu_type; AccelState *accelerator; CPUArchIdList *possible_cpus; CpuTopology smp; struct NVDIMMState *nvdimms_state; struct NumaState *numa_state; CXLFixedMemoryWindowOptionsList *cfmws_list; }; #define DEFINE_MACHINE(namestr, machine_initfn) \ static void machine_initfn##_class_init(ObjectClass *oc, void *data) \ { \ MachineClass *mc = MACHINE_CLASS(oc); \ machine_initfn(mc); \ } \ static const TypeInfo machine_initfn##_typeinfo = { \ .name = MACHINE_TYPE_NAME(namestr), \ .parent = TYPE_MACHINE, \ .class_init = machine_initfn##_class_init, \ }; \ static void machine_initfn##_register_types(void) \ { \ type_register_static(&machine_initfn##_typeinfo); \ } \ type_init(machine_initfn##_register_types) extern GlobalProperty hw_compat_7_0[]; extern const size_t hw_compat_7_0_len; extern GlobalProperty hw_compat_6_2[]; extern const size_t hw_compat_6_2_len; extern GlobalProperty hw_compat_6_1[]; extern const size_t hw_compat_6_1_len; extern GlobalProperty hw_compat_6_0[]; extern const size_t hw_compat_6_0_len; extern GlobalProperty hw_compat_5_2[]; extern const size_t hw_compat_5_2_len; extern GlobalProperty hw_compat_5_1[]; extern const size_t hw_compat_5_1_len; extern GlobalProperty hw_compat_5_0[]; extern const size_t hw_compat_5_0_len; extern GlobalProperty hw_compat_4_2[]; extern const size_t hw_compat_4_2_len; extern GlobalProperty hw_compat_4_1[]; extern const size_t hw_compat_4_1_len; extern GlobalProperty hw_compat_4_0[]; extern const size_t hw_compat_4_0_len; extern GlobalProperty hw_compat_3_1[]; extern const size_t hw_compat_3_1_len; extern GlobalProperty hw_compat_3_0[]; extern const size_t hw_compat_3_0_len; extern GlobalProperty hw_compat_2_12[]; extern const size_t hw_compat_2_12_len; extern GlobalProperty hw_compat_2_11[]; extern const size_t hw_compat_2_11_len; extern GlobalProperty hw_compat_2_10[]; extern const size_t hw_compat_2_10_len; extern GlobalProperty hw_compat_2_9[]; extern const size_t hw_compat_2_9_len; extern GlobalProperty hw_compat_2_8[]; extern const size_t hw_compat_2_8_len; extern GlobalProperty hw_compat_2_7[]; extern const size_t hw_compat_2_7_len; extern GlobalProperty hw_compat_2_6[]; extern const size_t hw_compat_2_6_len; extern GlobalProperty hw_compat_2_5[]; extern const size_t hw_compat_2_5_len; extern GlobalProperty hw_compat_2_4[]; extern const size_t hw_compat_2_4_len; extern GlobalProperty hw_compat_2_3[]; extern const size_t hw_compat_2_3_len; extern GlobalProperty hw_compat_2_2[]; extern const size_t hw_compat_2_2_len; extern GlobalProperty hw_compat_2_1[]; extern const size_t hw_compat_2_1_len; #endif