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