1 /* Declarations for use by board files for creating devices. */ 2 3 #ifndef HW_BOARDS_H 4 #define HW_BOARDS_H 5 6 #include "exec/memory.h" 7 #include "sysemu/hostmem.h" 8 #include "sysemu/blockdev.h" 9 #include "qapi/qapi-types-machine.h" 10 #include "qemu/module.h" 11 #include "qom/object.h" 12 #include "hw/core/cpu.h" 13 14 #define TYPE_MACHINE_SUFFIX "-machine" 15 16 /* Machine class name that needs to be used for class-name-based machine 17 * type lookup to work. 18 */ 19 #define MACHINE_TYPE_NAME(machinename) (machinename TYPE_MACHINE_SUFFIX) 20 21 #define TYPE_MACHINE "machine" 22 #undef MACHINE /* BSD defines it and QEMU does not use it */ 23 OBJECT_DECLARE_TYPE(MachineState, MachineClass, MACHINE) 24 25 extern MachineState *current_machine; 26 27 /** 28 * machine_class_default_cpu_type: Return the machine default CPU type. 29 * @mc: Machine class 30 */ 31 const char *machine_class_default_cpu_type(MachineClass *mc); 32 33 void machine_add_audiodev_property(MachineClass *mc); 34 void machine_run_board_init(MachineState *machine, const char *mem_path, Error **errp); 35 bool machine_usb(MachineState *machine); 36 int machine_phandle_start(MachineState *machine); 37 bool machine_dump_guest_core(MachineState *machine); 38 bool machine_mem_merge(MachineState *machine); 39 HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine); 40 void machine_set_cpu_numa_node(MachineState *machine, 41 const CpuInstanceProperties *props, 42 Error **errp); 43 void machine_parse_smp_config(MachineState *ms, 44 const SMPConfiguration *config, Error **errp); 45 unsigned int machine_topo_get_cores_per_socket(const MachineState *ms); 46 unsigned int machine_topo_get_threads_per_socket(const MachineState *ms); 47 void machine_memory_devices_init(MachineState *ms, hwaddr base, uint64_t size); 48 49 /** 50 * machine_class_allow_dynamic_sysbus_dev: Add type to list of valid devices 51 * @mc: Machine class 52 * @type: type to allow (should be a subtype of TYPE_SYS_BUS_DEVICE) 53 * 54 * Add the QOM type @type to the list of devices of which are subtypes 55 * of TYPE_SYS_BUS_DEVICE but which are still permitted to be dynamically 56 * created (eg by the user on the command line with -device). 57 * By default if the user tries to create any devices on the command line 58 * that are subtypes of TYPE_SYS_BUS_DEVICE they will get an error message; 59 * for the special cases which are permitted for this machine model, the 60 * machine model class init code must call this function to add them 61 * to the list of specifically permitted devices. 62 */ 63 void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type); 64 65 /** 66 * device_type_is_dynamic_sysbus: Check if type is an allowed sysbus device 67 * type for the machine class. 68 * @mc: Machine class 69 * @type: type to check (should be a subtype of TYPE_SYS_BUS_DEVICE) 70 * 71 * Returns: true if @type is a type in the machine's list of 72 * dynamically pluggable sysbus devices; otherwise false. 73 * 74 * Check if the QOM type @type is in the list of allowed sysbus device 75 * types (see machine_class_allowed_dynamic_sysbus_dev()). 76 * Note that if @type has a parent type in the list, it is allowed too. 77 */ 78 bool device_type_is_dynamic_sysbus(MachineClass *mc, const char *type); 79 80 /** 81 * device_is_dynamic_sysbus: test whether device is a dynamic sysbus device 82 * @mc: Machine class 83 * @dev: device to check 84 * 85 * Returns: true if @dev is a sysbus device on the machine's list 86 * of dynamically pluggable sysbus devices; otherwise false. 87 * 88 * This function checks whether @dev is a valid dynamic sysbus device, 89 * by first confirming that it is a sysbus device and then checking it 90 * against the list of permitted dynamic sysbus devices which has been 91 * set up by the machine using machine_class_allow_dynamic_sysbus_dev(). 92 * 93 * It is valid to call this with something that is not a subclass of 94 * TYPE_SYS_BUS_DEVICE; the function will return false in this case. 95 * This allows hotplug callback functions to be written as: 96 * if (device_is_dynamic_sysbus(mc, dev)) { 97 * handle dynamic sysbus case; 98 * } else if (some other kind of hotplug) { 99 * handle that; 100 * } 101 */ 102 bool device_is_dynamic_sysbus(MachineClass *mc, DeviceState *dev); 103 104 /* 105 * Checks that backend isn't used, preps it for exclusive usage and 106 * returns migratable MemoryRegion provided by backend. 107 */ 108 MemoryRegion *machine_consume_memdev(MachineState *machine, 109 HostMemoryBackend *backend); 110 111 /** 112 * CPUArchId: 113 * @arch_id - architecture-dependent CPU ID of present or possible CPU 114 * @cpu - pointer to corresponding CPU object if it's present on NULL otherwise 115 * @type - QOM class name of possible @cpu object 116 * @props - CPU object properties, initialized by board 117 * #vcpus_count - number of threads provided by @cpu object 118 */ 119 typedef struct CPUArchId { 120 uint64_t arch_id; 121 int64_t vcpus_count; 122 CpuInstanceProperties props; 123 Object *cpu; 124 const char *type; 125 } CPUArchId; 126 127 /** 128 * CPUArchIdList: 129 * @len - number of @CPUArchId items in @cpus array 130 * @cpus - array of present or possible CPUs for current machine configuration 131 */ 132 typedef struct { 133 int len; 134 CPUArchId cpus[]; 135 } CPUArchIdList; 136 137 /** 138 * SMPCompatProps: 139 * @prefer_sockets - whether sockets are preferred over cores in smp parsing 140 * @dies_supported - whether dies are supported by the machine 141 * @clusters_supported - whether clusters are supported by the machine 142 * @has_clusters - whether clusters are explicitly specified in the user 143 * provided SMP configuration 144 * @books_supported - whether books are supported by the machine 145 * @drawers_supported - whether drawers are supported by the machine 146 */ 147 typedef struct { 148 bool prefer_sockets; 149 bool dies_supported; 150 bool clusters_supported; 151 bool has_clusters; 152 bool books_supported; 153 bool drawers_supported; 154 } SMPCompatProps; 155 156 /** 157 * MachineClass: 158 * @deprecation_reason: If set, the machine is marked as deprecated. The 159 * string should provide some clear information about what to use instead. 160 * @max_cpus: maximum number of CPUs supported. Default: 1 161 * @min_cpus: minimum number of CPUs supported. Default: 1 162 * @default_cpus: number of CPUs instantiated if none are specified. Default: 1 163 * @is_default: 164 * If true QEMU will use this machine by default if no '-M' option is given. 165 * @get_hotplug_handler: this function is called during bus-less 166 * device hotplug. If defined it returns pointer to an instance 167 * of HotplugHandler object, which handles hotplug operation 168 * for a given @dev. It may return NULL if @dev doesn't require 169 * any actions to be performed by hotplug handler. 170 * @cpu_index_to_instance_props: 171 * used to provide @cpu_index to socket/core/thread number mapping, allowing 172 * legacy code to perform mapping from cpu_index to topology properties 173 * Returns: tuple of socket/core/thread ids given cpu_index belongs to. 174 * used to provide @cpu_index to socket number mapping, allowing 175 * a machine to group CPU threads belonging to the same socket/package 176 * Returns: socket number given cpu_index belongs to. 177 * @hw_version: 178 * Value of QEMU_VERSION when the machine was added to QEMU. 179 * Set only by old machines because they need to keep 180 * compatibility on code that exposed QEMU_VERSION to guests in 181 * the past (and now use qemu_hw_version()). 182 * @possible_cpu_arch_ids: 183 * Returns an array of @CPUArchId architecture-dependent CPU IDs 184 * which includes CPU IDs for present and possible to hotplug CPUs. 185 * Caller is responsible for freeing returned list. 186 * @get_default_cpu_node_id: 187 * returns default board specific node_id value for CPU slot specified by 188 * index @idx in @ms->possible_cpus[] 189 * @has_hotpluggable_cpus: 190 * If true, board supports CPUs creation with -device/device_add. 191 * @default_cpu_type: 192 * specifies default CPU_TYPE, which will be used for parsing target 193 * specific features and for creating CPUs if CPU name wasn't provided 194 * explicitly at CLI 195 * @minimum_page_bits: 196 * If non-zero, the board promises never to create a CPU with a page size 197 * smaller than this, so QEMU can use a more efficient larger page 198 * size than the target architecture's minimum. (Attempting to create 199 * such a CPU will fail.) Note that changing this is a migration 200 * compatibility break for the machine. 201 * @ignore_memory_transaction_failures: 202 * If this is flag is true then the CPU will ignore memory transaction 203 * failures which should cause the CPU to take an exception due to an 204 * access to an unassigned physical address; the transaction will instead 205 * return zero (for a read) or be ignored (for a write). This should be 206 * set only by legacy board models which rely on the old RAZ/WI behaviour 207 * for handling devices that QEMU does not yet model. New board models 208 * should instead use "unimplemented-device" for all memory ranges where 209 * the guest will attempt to probe for a device that QEMU doesn't 210 * implement and a stub device is required. 211 * @kvm_type: 212 * Return the type of KVM corresponding to the kvm-type string option or 213 * computed based on other criteria such as the host kernel capabilities. 214 * kvm-type may be NULL if it is not needed. 215 * @numa_mem_supported: 216 * true if '--numa node.mem' option is supported and false otherwise 217 * @hotplug_allowed: 218 * If the hook is provided, then it'll be called for each device 219 * hotplug to check whether the device hotplug is allowed. Return 220 * true to grant allowance or false to reject the hotplug. When 221 * false is returned, an error must be set to show the reason of 222 * the rejection. If the hook is not provided, all hotplug will be 223 * allowed. 224 * @default_ram_id: 225 * Specifies initial RAM MemoryRegion name to be used for default backend 226 * creation if user explicitly hasn't specified backend with "memory-backend" 227 * property. 228 * It also will be used as a way to option into "-m" option support. 229 * If it's not set by board, '-m' will be ignored and generic code will 230 * not create default RAM MemoryRegion. 231 * @fixup_ram_size: 232 * Amends user provided ram size (with -m option) using machine 233 * specific algorithm. To be used by old machine types for compat 234 * purposes only. 235 * Applies only to default memory backend, i.e., explicit memory backend 236 * wasn't used. 237 */ 238 struct MachineClass { 239 /*< private >*/ 240 ObjectClass parent_class; 241 /*< public >*/ 242 243 const char *family; /* NULL iff @name identifies a standalone machtype */ 244 char *name; 245 const char *alias; 246 const char *desc; 247 const char *deprecation_reason; 248 249 void (*init)(MachineState *state); 250 void (*reset)(MachineState *state, ShutdownCause reason); 251 void (*wakeup)(MachineState *state); 252 int (*kvm_type)(MachineState *machine, const char *arg); 253 254 BlockInterfaceType block_default_type; 255 int units_per_default_bus; 256 int max_cpus; 257 int min_cpus; 258 int default_cpus; 259 unsigned int no_serial:1, 260 no_parallel:1, 261 no_floppy:1, 262 no_cdrom:1, 263 no_sdcard:1, 264 pci_allow_0_address:1, 265 legacy_fw_cfg_order:1; 266 bool is_default; 267 const char *default_machine_opts; 268 const char *default_boot_order; 269 const char *default_display; 270 const char *default_nic; 271 GPtrArray *compat_props; 272 const char *hw_version; 273 ram_addr_t default_ram_size; 274 const char *default_cpu_type; 275 bool default_kernel_irqchip_split; 276 bool option_rom_has_mr; 277 bool rom_file_has_mr; 278 int minimum_page_bits; 279 bool has_hotpluggable_cpus; 280 bool ignore_memory_transaction_failures; 281 int numa_mem_align_shift; 282 const char * const *valid_cpu_types; 283 strList *allowed_dynamic_sysbus_devices; 284 bool auto_enable_numa_with_memhp; 285 bool auto_enable_numa_with_memdev; 286 bool ignore_boot_device_suffixes; 287 bool smbus_no_migration_support; 288 bool nvdimm_supported; 289 bool numa_mem_supported; 290 bool auto_enable_numa; 291 bool cpu_cluster_has_numa_boundary; 292 SMPCompatProps smp_props; 293 const char *default_ram_id; 294 295 HotplugHandler *(*get_hotplug_handler)(MachineState *machine, 296 DeviceState *dev); 297 bool (*hotplug_allowed)(MachineState *state, DeviceState *dev, 298 Error **errp); 299 CpuInstanceProperties (*cpu_index_to_instance_props)(MachineState *machine, 300 unsigned cpu_index); 301 const CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine); 302 int64_t (*get_default_cpu_node_id)(const MachineState *ms, int idx); 303 ram_addr_t (*fixup_ram_size)(ram_addr_t size); 304 }; 305 306 /** 307 * DeviceMemoryState: 308 * @base: address in guest physical address space where the memory 309 * address space for memory devices starts 310 * @mr: memory region container for memory devices 311 * @as: address space for memory devices 312 * @listener: memory listener used to track used memslots in the address space 313 * @dimm_size: the sum of plugged DIMMs' sizes 314 * @used_region_size: the part of @mr already used by memory devices 315 * @required_memslots: the number of memslots required by memory devices 316 * @used_memslots: the number of memslots currently used by memory devices 317 * @memslot_auto_decision_active: whether any plugged memory device 318 * automatically decided to use more than 319 * one memslot 320 */ 321 typedef struct DeviceMemoryState { 322 hwaddr base; 323 MemoryRegion mr; 324 AddressSpace as; 325 MemoryListener listener; 326 uint64_t dimm_size; 327 uint64_t used_region_size; 328 unsigned int required_memslots; 329 unsigned int used_memslots; 330 unsigned int memslot_auto_decision_active; 331 } DeviceMemoryState; 332 333 /** 334 * CpuTopology: 335 * @cpus: the number of present logical processors on the machine 336 * @drawers: the number of drawers on the machine 337 * @books: the number of books in one drawer 338 * @sockets: the number of sockets in one book 339 * @dies: the number of dies in one socket 340 * @clusters: the number of clusters in one die 341 * @cores: the number of cores in one cluster 342 * @threads: the number of threads in one core 343 * @max_cpus: the maximum number of logical processors on the machine 344 */ 345 typedef struct CpuTopology { 346 unsigned int cpus; 347 unsigned int drawers; 348 unsigned int books; 349 unsigned int sockets; 350 unsigned int dies; 351 unsigned int clusters; 352 unsigned int cores; 353 unsigned int threads; 354 unsigned int max_cpus; 355 } CpuTopology; 356 357 /** 358 * MachineState: 359 */ 360 struct MachineState { 361 /*< private >*/ 362 Object parent_obj; 363 364 /*< public >*/ 365 366 void *fdt; 367 char *dtb; 368 char *dumpdtb; 369 int phandle_start; 370 char *dt_compatible; 371 bool dump_guest_core; 372 bool mem_merge; 373 bool usb; 374 bool usb_disabled; 375 char *firmware; 376 bool iommu; 377 bool suppress_vmdesc; 378 bool enable_graphics; 379 ConfidentialGuestSupport *cgs; 380 HostMemoryBackend *memdev; 381 /* 382 * convenience alias to ram_memdev_id backend memory region 383 * or to numa container memory region 384 */ 385 MemoryRegion *ram; 386 DeviceMemoryState *device_memory; 387 388 /* 389 * Included in MachineState for simplicity, but not supported 390 * unless machine_add_audiodev_property is called. Boards 391 * that have embedded audio devices can call it from the 392 * machine init function and forward the property to the device. 393 */ 394 char *audiodev; 395 396 ram_addr_t ram_size; 397 ram_addr_t maxram_size; 398 uint64_t ram_slots; 399 BootConfiguration boot_config; 400 char *kernel_filename; 401 char *kernel_cmdline; 402 char *initrd_filename; 403 const char *cpu_type; 404 AccelState *accelerator; 405 CPUArchIdList *possible_cpus; 406 CpuTopology smp; 407 struct NVDIMMState *nvdimms_state; 408 struct NumaState *numa_state; 409 }; 410 411 #define DEFINE_MACHINE(namestr, machine_initfn) \ 412 static void machine_initfn##_class_init(ObjectClass *oc, void *data) \ 413 { \ 414 MachineClass *mc = MACHINE_CLASS(oc); \ 415 machine_initfn(mc); \ 416 } \ 417 static const TypeInfo machine_initfn##_typeinfo = { \ 418 .name = MACHINE_TYPE_NAME(namestr), \ 419 .parent = TYPE_MACHINE, \ 420 .class_init = machine_initfn##_class_init, \ 421 }; \ 422 static void machine_initfn##_register_types(void) \ 423 { \ 424 type_register_static(&machine_initfn##_typeinfo); \ 425 } \ 426 type_init(machine_initfn##_register_types) 427 428 extern GlobalProperty hw_compat_8_2[]; 429 extern const size_t hw_compat_8_2_len; 430 431 extern GlobalProperty hw_compat_8_1[]; 432 extern const size_t hw_compat_8_1_len; 433 434 extern GlobalProperty hw_compat_8_0[]; 435 extern const size_t hw_compat_8_0_len; 436 437 extern GlobalProperty hw_compat_7_2[]; 438 extern const size_t hw_compat_7_2_len; 439 440 extern GlobalProperty hw_compat_7_1[]; 441 extern const size_t hw_compat_7_1_len; 442 443 extern GlobalProperty hw_compat_7_0[]; 444 extern const size_t hw_compat_7_0_len; 445 446 extern GlobalProperty hw_compat_6_2[]; 447 extern const size_t hw_compat_6_2_len; 448 449 extern GlobalProperty hw_compat_6_1[]; 450 extern const size_t hw_compat_6_1_len; 451 452 extern GlobalProperty hw_compat_6_0[]; 453 extern const size_t hw_compat_6_0_len; 454 455 extern GlobalProperty hw_compat_5_2[]; 456 extern const size_t hw_compat_5_2_len; 457 458 extern GlobalProperty hw_compat_5_1[]; 459 extern const size_t hw_compat_5_1_len; 460 461 extern GlobalProperty hw_compat_5_0[]; 462 extern const size_t hw_compat_5_0_len; 463 464 extern GlobalProperty hw_compat_4_2[]; 465 extern const size_t hw_compat_4_2_len; 466 467 extern GlobalProperty hw_compat_4_1[]; 468 extern const size_t hw_compat_4_1_len; 469 470 extern GlobalProperty hw_compat_4_0[]; 471 extern const size_t hw_compat_4_0_len; 472 473 extern GlobalProperty hw_compat_3_1[]; 474 extern const size_t hw_compat_3_1_len; 475 476 extern GlobalProperty hw_compat_3_0[]; 477 extern const size_t hw_compat_3_0_len; 478 479 extern GlobalProperty hw_compat_2_12[]; 480 extern const size_t hw_compat_2_12_len; 481 482 extern GlobalProperty hw_compat_2_11[]; 483 extern const size_t hw_compat_2_11_len; 484 485 extern GlobalProperty hw_compat_2_10[]; 486 extern const size_t hw_compat_2_10_len; 487 488 extern GlobalProperty hw_compat_2_9[]; 489 extern const size_t hw_compat_2_9_len; 490 491 extern GlobalProperty hw_compat_2_8[]; 492 extern const size_t hw_compat_2_8_len; 493 494 extern GlobalProperty hw_compat_2_7[]; 495 extern const size_t hw_compat_2_7_len; 496 497 extern GlobalProperty hw_compat_2_6[]; 498 extern const size_t hw_compat_2_6_len; 499 500 extern GlobalProperty hw_compat_2_5[]; 501 extern const size_t hw_compat_2_5_len; 502 503 extern GlobalProperty hw_compat_2_4[]; 504 extern const size_t hw_compat_2_4_len; 505 506 extern GlobalProperty hw_compat_2_3[]; 507 extern const size_t hw_compat_2_3_len; 508 509 extern GlobalProperty hw_compat_2_2[]; 510 extern const size_t hw_compat_2_2_len; 511 512 extern GlobalProperty hw_compat_2_1[]; 513 extern const size_t hw_compat_2_1_len; 514 515 #endif 516