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