1 /* Declarations for use by board files for creating devices. */
6 #include "exec/memory.h"
7 #include "sysemu/hostmem.h"
8 #include "sysemu/blockdev.h"
9 #include "sysemu/accel.h"
10 #include "qapi/qapi-types-machine.h"
11 #include "qemu/module.h"
12 #include "qom/object.h"
13 #include "hw/core/cpu.h"
15 #define TYPE_MACHINE_SUFFIX "-machine"
17 /* Machine class name that needs to be used for class-name-based machine
18 * type lookup to work.
20 #define MACHINE_TYPE_NAME(machinename) (machinename TYPE_MACHINE_SUFFIX)
22 #define TYPE_MACHINE "machine"
23 #undef MACHINE /* BSD defines it and QEMU does not use it */
24 #define MACHINE(obj) \
25 OBJECT_CHECK(MachineState, (obj), TYPE_MACHINE)
26 #define MACHINE_GET_CLASS(obj) \
27 OBJECT_GET_CLASS(MachineClass, (obj), TYPE_MACHINE)
28 #define MACHINE_CLASS(klass) \
29 OBJECT_CLASS_CHECK(MachineClass, (klass), TYPE_MACHINE)
31 extern MachineState
*current_machine
;
33 void machine_run_board_init(MachineState
*machine
);
34 bool machine_usb(MachineState
*machine
);
35 int machine_phandle_start(MachineState
*machine
);
36 bool machine_dump_guest_core(MachineState
*machine
);
37 bool machine_mem_merge(MachineState
*machine
);
38 HotpluggableCPUList
*machine_query_hotpluggable_cpus(MachineState
*machine
);
39 void machine_set_cpu_numa_node(MachineState
*machine
,
40 const CpuInstanceProperties
*props
,
43 void machine_class_allow_dynamic_sysbus_dev(MachineClass
*mc
, const char *type
);
45 * Checks that backend isn't used, preps it for exclusive usage and
46 * returns migratable MemoryRegion provided by backend.
48 MemoryRegion
*machine_consume_memdev(MachineState
*machine
,
49 HostMemoryBackend
*backend
);
53 * @arch_id - architecture-dependent CPU ID of present or possible CPU
54 * @cpu - pointer to corresponding CPU object if it's present on NULL otherwise
55 * @type - QOM class name of possible @cpu object
56 * @props - CPU object properties, initialized by board
57 * #vcpus_count - number of threads provided by @cpu object
59 typedef struct CPUArchId
{
62 CpuInstanceProperties props
;
69 * @len - number of @CPUArchId items in @cpus array
70 * @cpus - array of present or possible CPUs for current machine configuration
79 * @deprecation_reason: If set, the machine is marked as deprecated. The
80 * string should provide some clear information about what to use instead.
81 * @max_cpus: maximum number of CPUs supported. Default: 1
82 * @min_cpus: minimum number of CPUs supported. Default: 1
83 * @default_cpus: number of CPUs instantiated if none are specified. Default: 1
84 * @get_hotplug_handler: this function is called during bus-less
85 * device hotplug. If defined it returns pointer to an instance
86 * of HotplugHandler object, which handles hotplug operation
87 * for a given @dev. It may return NULL if @dev doesn't require
88 * any actions to be performed by hotplug handler.
89 * @cpu_index_to_instance_props:
90 * used to provide @cpu_index to socket/core/thread number mapping, allowing
91 * legacy code to perform maping from cpu_index to topology properties
92 * Returns: tuple of socket/core/thread ids given cpu_index belongs to.
93 * used to provide @cpu_index to socket number mapping, allowing
94 * a machine to group CPU threads belonging to the same socket/package
95 * Returns: socket number given cpu_index belongs to.
97 * Value of QEMU_VERSION when the machine was added to QEMU.
98 * Set only by old machines because they need to keep
99 * compatibility on code that exposed QEMU_VERSION to guests in
100 * the past (and now use qemu_hw_version()).
101 * @possible_cpu_arch_ids:
102 * Returns an array of @CPUArchId architecture-dependent CPU IDs
103 * which includes CPU IDs for present and possible to hotplug CPUs.
104 * Caller is responsible for freeing returned list.
105 * @get_default_cpu_node_id:
106 * returns default board specific node_id value for CPU slot specified by
107 * index @idx in @ms->possible_cpus[]
108 * @has_hotpluggable_cpus:
109 * If true, board supports CPUs creation with -device/device_add.
111 * specifies default CPU_TYPE, which will be used for parsing target
112 * specific features and for creating CPUs if CPU name wasn't provided
114 * @minimum_page_bits:
115 * If non-zero, the board promises never to create a CPU with a page size
116 * smaller than this, so QEMU can use a more efficient larger page
117 * size than the target architecture's minimum. (Attempting to create
118 * such a CPU will fail.) Note that changing this is a migration
119 * compatibility break for the machine.
120 * @ignore_memory_transaction_failures:
121 * If this is flag is true then the CPU will ignore memory transaction
122 * failures which should cause the CPU to take an exception due to an
123 * access to an unassigned physical address; the transaction will instead
124 * return zero (for a read) or be ignored (for a write). This should be
125 * set only by legacy board models which rely on the old RAZ/WI behaviour
126 * for handling devices that QEMU does not yet model. New board models
127 * should instead use "unimplemented-device" for all memory ranges where
128 * the guest will attempt to probe for a device that QEMU doesn't
129 * implement and a stub device is required.
131 * Return the type of KVM corresponding to the kvm-type string option or
132 * computed based on other criteria such as the host kernel capabilities.
133 * @numa_mem_supported:
134 * true if '--numa node.mem' option is supported and false otherwise
136 * The function pointer to hook different machine specific functions for
137 * parsing "smp-opts" from QemuOpts to MachineState::CpuTopology and more
138 * machine specific topology fields, such as smp_dies for PCMachine.
140 * If the hook is provided, then it'll be called for each device
141 * hotplug to check whether the device hotplug is allowed. Return
142 * true to grant allowance or false to reject the hotplug. When
143 * false is returned, an error must be set to show the reason of
144 * the rejection. If the hook is not provided, all hotplug will be
147 * Specifies inital RAM MemoryRegion name to be used for default backend
148 * creation if user explicitly hasn't specified backend with "memory-backend"
150 * It also will be used as a way to optin into "-m" option support.
151 * If it's not set by board, '-m' will be ignored and generic code will
152 * not create default RAM MemoryRegion.
154 struct MachineClass
{
156 ObjectClass parent_class
;
159 const char *family
; /* NULL iff @name identifies a standalone machtype */
163 const char *deprecation_reason
;
165 void (*init
)(MachineState
*state
);
166 void (*reset
)(MachineState
*state
);
167 void (*wakeup
)(MachineState
*state
);
168 void (*hot_add_cpu
)(MachineState
*state
, const int64_t id
, Error
**errp
);
169 int (*kvm_type
)(MachineState
*machine
, const char *arg
);
170 void (*smp_parse
)(MachineState
*ms
, QemuOpts
*opts
);
172 BlockInterfaceType block_default_type
;
173 int units_per_default_bus
;
177 unsigned int no_serial
:1,
182 pci_allow_0_address
:1,
183 legacy_fw_cfg_order
:1;
185 const char *default_machine_opts
;
186 const char *default_boot_order
;
187 const char *default_display
;
188 GPtrArray
*compat_props
;
189 const char *hw_version
;
190 ram_addr_t default_ram_size
;
191 const char *default_cpu_type
;
192 bool default_kernel_irqchip_split
;
193 bool option_rom_has_mr
;
194 bool rom_file_has_mr
;
195 int minimum_page_bits
;
196 bool has_hotpluggable_cpus
;
197 bool ignore_memory_transaction_failures
;
198 int numa_mem_align_shift
;
199 const char **valid_cpu_types
;
200 strList
*allowed_dynamic_sysbus_devices
;
201 bool auto_enable_numa_with_memhp
;
202 void (*numa_auto_assign_ram
)(MachineClass
*mc
, NodeInfo
*nodes
,
203 int nb_nodes
, ram_addr_t size
);
204 bool ignore_boot_device_suffixes
;
205 bool smbus_no_migration_support
;
206 bool nvdimm_supported
;
207 bool numa_mem_supported
;
208 bool auto_enable_numa
;
209 const char *default_ram_id
;
211 HotplugHandler
*(*get_hotplug_handler
)(MachineState
*machine
,
213 bool (*hotplug_allowed
)(MachineState
*state
, DeviceState
*dev
,
215 CpuInstanceProperties (*cpu_index_to_instance_props
)(MachineState
*machine
,
217 const CPUArchIdList
*(*possible_cpu_arch_ids
)(MachineState
*machine
);
218 int64_t (*get_default_cpu_node_id
)(const MachineState
*ms
, int idx
);
223 * @base: address in guest physical address space where the memory
224 * address space for memory devices starts
225 * @mr: address space container for memory devices
227 typedef struct DeviceMemoryState
{
234 * @cpus: the number of present logical processors on the machine
235 * @cores: the number of cores in one package
236 * @threads: the number of threads in one core
237 * @max_cpus: the maximum number of logical processors on the machine
239 typedef struct CpuTopology
{
242 unsigned int threads
;
243 unsigned int max_cpus
;
249 struct MachineState
{
252 Notifier sysbus_notifier
;
260 bool dump_guest_core
;
266 bool suppress_vmdesc
;
267 bool enforce_config_section
;
268 bool enable_graphics
;
269 char *memory_encryption
;
272 * convenience alias to ram_memdev_id backend memory region
273 * or to numa container memory region
276 DeviceMemoryState
*device_memory
;
279 ram_addr_t maxram_size
;
281 const char *boot_order
;
282 char *kernel_filename
;
283 char *kernel_cmdline
;
284 char *initrd_filename
;
285 const char *cpu_type
;
286 AccelState
*accelerator
;
287 CPUArchIdList
*possible_cpus
;
289 struct NVDIMMState
*nvdimms_state
;
290 struct NumaState
*numa_state
;
293 #define DEFINE_MACHINE(namestr, machine_initfn) \
294 static void machine_initfn##_class_init(ObjectClass *oc, void *data) \
296 MachineClass *mc = MACHINE_CLASS(oc); \
297 machine_initfn(mc); \
299 static const TypeInfo machine_initfn##_typeinfo = { \
300 .name = MACHINE_TYPE_NAME(namestr), \
301 .parent = TYPE_MACHINE, \
302 .class_init = machine_initfn##_class_init, \
304 static void machine_initfn##_register_types(void) \
306 type_register_static(&machine_initfn##_typeinfo); \
308 type_init(machine_initfn##_register_types)
310 extern GlobalProperty hw_compat_4_2
[];
311 extern const size_t hw_compat_4_2_len
;
313 extern GlobalProperty hw_compat_4_1
[];
314 extern const size_t hw_compat_4_1_len
;
316 extern GlobalProperty hw_compat_4_0
[];
317 extern const size_t hw_compat_4_0_len
;
319 extern GlobalProperty hw_compat_3_1
[];
320 extern const size_t hw_compat_3_1_len
;
322 extern GlobalProperty hw_compat_3_0
[];
323 extern const size_t hw_compat_3_0_len
;
325 extern GlobalProperty hw_compat_2_12
[];
326 extern const size_t hw_compat_2_12_len
;
328 extern GlobalProperty hw_compat_2_11
[];
329 extern const size_t hw_compat_2_11_len
;
331 extern GlobalProperty hw_compat_2_10
[];
332 extern const size_t hw_compat_2_10_len
;
334 extern GlobalProperty hw_compat_2_9
[];
335 extern const size_t hw_compat_2_9_len
;
337 extern GlobalProperty hw_compat_2_8
[];
338 extern const size_t hw_compat_2_8_len
;
340 extern GlobalProperty hw_compat_2_7
[];
341 extern const size_t hw_compat_2_7_len
;
343 extern GlobalProperty hw_compat_2_6
[];
344 extern const size_t hw_compat_2_6_len
;
346 extern GlobalProperty hw_compat_2_5
[];
347 extern const size_t hw_compat_2_5_len
;
349 extern GlobalProperty hw_compat_2_4
[];
350 extern const size_t hw_compat_2_4_len
;
352 extern GlobalProperty hw_compat_2_3
[];
353 extern const size_t hw_compat_2_3_len
;
355 extern GlobalProperty hw_compat_2_2
[];
356 extern const size_t hw_compat_2_2_len
;
358 extern GlobalProperty hw_compat_2_1
[];
359 extern const size_t hw_compat_2_1_len
;