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