1 /* Declarations for use by board files for creating devices. */
6 #include "sysemu/blockdev.h"
7 #include "sysemu/accel.h"
9 #include "qom/object.h"
13 * memory_region_allocate_system_memory - Allocate a board's main memory
14 * @mr: the #MemoryRegion to be initialized
15 * @owner: the object that tracks the region's reference count
16 * @name: name of the memory region
17 * @ram_size: size of the region in bytes
19 * This function allocates the main memory for a board model, and
20 * initializes @mr appropriately. It also arranges for the memory
21 * to be migrated (by calling vmstate_register_ram_global()).
23 * Memory allocated via this function will be backed with the memory
24 * backend the user provided using "-mem-path" or "-numa node,memdev=..."
25 * if appropriate; this is typically used to cause host huge pages to be
26 * used. This function should therefore be called by a board exactly once,
27 * for the primary or largest RAM area it implements.
29 * For boards where the major RAM is split into two parts in the memory
30 * map, you can deal with this by calling memory_region_allocate_system_memory()
31 * once to get a MemoryRegion with enough RAM for both parts, and then
32 * creating alias MemoryRegions via memory_region_init_alias() which
33 * alias into different parts of the RAM MemoryRegion and can be mapped
34 * into the memory map in the appropriate places.
36 * Smaller pieces of memory (display RAM, static RAMs, etc) don't need
37 * to be backed via the -mem-path memory backend and can simply
38 * be created via memory_region_init_ram().
40 void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
44 #define TYPE_MACHINE_SUFFIX "-machine"
46 /* Machine class name that needs to be used for class-name-based machine
47 * type lookup to work.
49 #define MACHINE_TYPE_NAME(machinename) (machinename TYPE_MACHINE_SUFFIX)
51 #define TYPE_MACHINE "machine"
52 #undef MACHINE /* BSD defines it and QEMU does not use it */
53 #define MACHINE(obj) \
54 OBJECT_CHECK(MachineState, (obj), TYPE_MACHINE)
55 #define MACHINE_GET_CLASS(obj) \
56 OBJECT_GET_CLASS(MachineClass, (obj), TYPE_MACHINE)
57 #define MACHINE_CLASS(klass) \
58 OBJECT_CLASS_CHECK(MachineClass, (klass), TYPE_MACHINE)
60 extern MachineState *current_machine;
62 void machine_run_board_init(MachineState *machine);
63 bool machine_usb(MachineState *machine);
64 bool machine_kernel_irqchip_allowed(MachineState *machine);
65 bool machine_kernel_irqchip_required(MachineState *machine);
66 bool machine_kernel_irqchip_split(MachineState *machine);
67 int machine_kvm_shadow_mem(MachineState *machine);
68 int machine_phandle_start(MachineState *machine);
69 bool machine_dump_guest_core(MachineState *machine);
70 bool machine_mem_merge(MachineState *machine);
71 HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine);
72 void machine_set_cpu_numa_node(MachineState *machine,
73 const CpuInstanceProperties *props,
76 void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type);
81 * @arch_id - architecture-dependent CPU ID of present or possible CPU
82 * @cpu - pointer to corresponding CPU object if it's present on NULL otherwise
83 * @type - QOM class name of possible @cpu object
84 * @props - CPU object properties, initialized by board
85 * #vcpus_count - number of threads provided by @cpu object
90 CpuInstanceProperties props;
97 * @len - number of @CPUArchId items in @cpus array
98 * @cpus - array of present or possible CPUs for current machine configuration
107 * @deprecation_reason: If set, the machine is marked as deprecated. The
108 * string should provide some clear information about what to use instead.
109 * @max_cpus: maximum number of CPUs supported. Default: 1
110 * @min_cpus: minimum number of CPUs supported. Default: 1
111 * @default_cpus: number of CPUs instantiated if none are specified. Default: 1
112 * @get_hotplug_handler: this function is called during bus-less
113 * device hotplug. If defined it returns pointer to an instance
114 * of HotplugHandler object, which handles hotplug operation
115 * for a given @dev. It may return NULL if @dev doesn't require
116 * any actions to be performed by hotplug handler.
117 * @cpu_index_to_instance_props:
118 * used to provide @cpu_index to socket/core/thread number mapping, allowing
119 * legacy code to perform maping from cpu_index to topology properties
120 * Returns: tuple of socket/core/thread ids given cpu_index belongs to.
121 * used to provide @cpu_index to socket number mapping, allowing
122 * a machine to group CPU threads belonging to the same socket/package
123 * Returns: socket number given cpu_index belongs to.
125 * Value of QEMU_VERSION when the machine was added to QEMU.
126 * Set only by old machines because they need to keep
127 * compatibility on code that exposed QEMU_VERSION to guests in
128 * the past (and now use qemu_hw_version()).
129 * @possible_cpu_arch_ids:
130 * Returns an array of @CPUArchId architecture-dependent CPU IDs
131 * which includes CPU IDs for present and possible to hotplug CPUs.
132 * Caller is responsible for freeing returned list.
133 * @get_default_cpu_node_id:
134 * returns default board specific node_id value for CPU slot specified by
135 * index @idx in @ms->possible_cpus[]
136 * @has_hotpluggable_cpus:
137 * If true, board supports CPUs creation with -device/device_add.
139 * specifies default CPU_TYPE, which will be used for parsing target
140 * specific features and for creating CPUs if CPU name wasn't provided
142 * @minimum_page_bits:
143 * If non-zero, the board promises never to create a CPU with a page size
144 * smaller than this, so QEMU can use a more efficient larger page
145 * size than the target architecture's minimum. (Attempting to create
146 * such a CPU will fail.) Note that changing this is a migration
147 * compatibility break for the machine.
148 * @ignore_memory_transaction_failures:
149 * If this is flag is true then the CPU will ignore memory transaction
150 * failures which should cause the CPU to take an exception due to an
151 * access to an unassigned physical address; the transaction will instead
152 * return zero (for a read) or be ignored (for a write). This should be
153 * set only by legacy board models which rely on the old RAZ/WI behaviour
154 * for handling devices that QEMU does not yet model. New board models
155 * should instead use "unimplemented-device" for all memory ranges where
156 * the guest will attempt to probe for a device that QEMU doesn't
157 * implement and a stub device is required.
159 * Return the type of KVM corresponding to the kvm-type string option or
160 * computed based on other criteria such as the host kernel capabilities.
162 struct MachineClass {
164 ObjectClass parent_class;
167 const char *family; /* NULL iff @name identifies a standalone machtype */
171 const char *deprecation_reason;
173 void (*init)(MachineState *state);
175 void (*hot_add_cpu)(const int64_t id, Error **errp);
176 int (*kvm_type)(MachineState *machine, const char *arg);
178 BlockInterfaceType block_default_type;
179 int units_per_default_bus;
183 unsigned int no_serial:1,
188 pci_allow_0_address:1,
189 legacy_fw_cfg_order:1;
191 const char *default_machine_opts;
192 const char *default_boot_order;
193 const char *default_display;
194 GPtrArray *compat_props;
195 const char *hw_version;
196 ram_addr_t default_ram_size;
197 const char *default_cpu_type;
198 bool default_kernel_irqchip_split;
199 bool option_rom_has_mr;
200 bool rom_file_has_mr;
201 int minimum_page_bits;
202 bool has_hotpluggable_cpus;
203 bool ignore_memory_transaction_failures;
204 int numa_mem_align_shift;
205 const char **valid_cpu_types;
206 strList *allowed_dynamic_sysbus_devices;
207 bool auto_enable_numa_with_memhp;
208 void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
209 int nb_nodes, ram_addr_t size);
210 bool ignore_boot_device_suffixes;
211 bool smbus_no_migration_support;
212 bool nvdimm_supported;
214 HotplugHandler *(*get_hotplug_handler)(MachineState *machine,
216 CpuInstanceProperties (*cpu_index_to_instance_props)(MachineState *machine,
218 const CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine);
219 int64_t (*get_default_cpu_node_id)(const MachineState *ms, int idx);
224 * @base: address in guest physical address space where the memory
225 * address space for memory devices starts
226 * @mr: address space container for memory devices
228 typedef struct DeviceMemoryState {
236 struct MachineState {
239 Notifier sysbus_notifier;
244 bool kernel_irqchip_allowed;
245 bool kernel_irqchip_required;
246 bool kernel_irqchip_split;
252 bool dump_guest_core;
256 bool igd_gfx_passthru;
259 bool suppress_vmdesc;
260 bool enforce_config_section;
261 bool enable_graphics;
262 char *memory_encryption;
263 DeviceMemoryState *device_memory;
266 ram_addr_t maxram_size;
268 const char *boot_order;
269 char *kernel_filename;
270 char *kernel_cmdline;
271 char *initrd_filename;
272 const char *cpu_type;
273 AccelState *accelerator;
274 CPUArchIdList *possible_cpus;
275 struct NVDIMMState *nvdimms_state;
278 #define DEFINE_MACHINE(namestr, machine_initfn) \
279 static void machine_initfn##_class_init(ObjectClass *oc, void *data) \
281 MachineClass *mc = MACHINE_CLASS(oc); \
282 machine_initfn(mc); \
284 static const TypeInfo machine_initfn##_typeinfo = { \
285 .name = MACHINE_TYPE_NAME(namestr), \
286 .parent = TYPE_MACHINE, \
287 .class_init = machine_initfn##_class_init, \
289 static void machine_initfn##_register_types(void) \
291 type_register_static(&machine_initfn##_typeinfo); \
293 type_init(machine_initfn##_register_types)
295 extern GlobalProperty hw_compat_4_0[];
296 extern const size_t hw_compat_4_0_len;
298 extern GlobalProperty hw_compat_3_1[];
299 extern const size_t hw_compat_3_1_len;
301 extern GlobalProperty hw_compat_3_0[];
302 extern const size_t hw_compat_3_0_len;
304 extern GlobalProperty hw_compat_2_12[];
305 extern const size_t hw_compat_2_12_len;
307 extern GlobalProperty hw_compat_2_11[];
308 extern const size_t hw_compat_2_11_len;
310 extern GlobalProperty hw_compat_2_10[];
311 extern const size_t hw_compat_2_10_len;
313 extern GlobalProperty hw_compat_2_9[];
314 extern const size_t hw_compat_2_9_len;
316 extern GlobalProperty hw_compat_2_8[];
317 extern const size_t hw_compat_2_8_len;
319 extern GlobalProperty hw_compat_2_7[];
320 extern const size_t hw_compat_2_7_len;
322 extern GlobalProperty hw_compat_2_6[];
323 extern const size_t hw_compat_2_6_len;
325 extern GlobalProperty hw_compat_2_5[];
326 extern const size_t hw_compat_2_5_len;
328 extern GlobalProperty hw_compat_2_4[];
329 extern const size_t hw_compat_2_4_len;
331 extern GlobalProperty hw_compat_2_3[];
332 extern const size_t hw_compat_2_3_len;
334 extern GlobalProperty hw_compat_2_2[];
335 extern const size_t hw_compat_2_2_len;
337 extern GlobalProperty hw_compat_2_1[];
338 extern const size_t hw_compat_2_1_len;