include/hw/boards.h

   1 /* Declarations for use by board files for creating devices.  */
   2
   3 #ifndef HW_BOARDS_H
   4 #define HW_BOARDS_H
   5
   6 #include "sysemu/blockdev.h"
   7 #include "sysemu/accel.h"
   8 #include "hw/qdev.h"
   9 #include "qapi/qapi-types-machine.h"
  10 #include "qemu/module.h"
  11 #include "qom/object.h"
  12 #include "qom/cpu.h"
  13
  14 /**
  15  * memory_region_allocate_system_memory - Allocate a board's main memory
  16  * @mr: the #MemoryRegion to be initialized
  17  * @owner: the object that tracks the region's reference count
  18  * @name: name of the memory region
  19  * @ram_size: size of the region in bytes
  20  *
  21  * This function allocates the main memory for a board model, and
  22  * initializes @mr appropriately. It also arranges for the memory
  23  * to be migrated (by calling vmstate_register_ram_global()).
  24  *
  25  * Memory allocated via this function will be backed with the memory
  26  * backend the user provided using "-mem-path" or "-numa node,memdev=..."
  27  * if appropriate; this is typically used to cause host huge pages to be
  28  * used. This function should therefore be called by a board exactly once,
  29  * for the primary or largest RAM area it implements.
  30  *
  31  * For boards where the major RAM is split into two parts in the memory
  32  * map, you can deal with this by calling memory_region_allocate_system_memory()
  33  * once to get a MemoryRegion with enough RAM for both parts, and then
  34  * creating alias MemoryRegions via memory_region_init_alias() which
  35  * alias into different parts of the RAM MemoryRegion and can be mapped
  36  * into the memory map in the appropriate places.
  37  *
  38  * Smaller pieces of memory (display RAM, static RAMs, etc) don't need
  39  * to be backed via the -mem-path memory backend and can simply
  40  * be created via memory_region_init_ram().
  41  */
  42 void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner,
  43                                           const char *name,
  44                                           uint64_t ram_size);
  45
  46 #define TYPE_MACHINE_SUFFIX "-machine"
  47
  48 /* Machine class name that needs to be used for class-name-based machine
  49  * type lookup to work.
  50  */
  51 #define MACHINE_TYPE_NAME(machinename) (machinename TYPE_MACHINE_SUFFIX)
  52
  53 #define TYPE_MACHINE "machine"
  54 #undef MACHINE  /* BSD defines it and QEMU does not use it */
  55 #define MACHINE(obj) \
  56     OBJECT_CHECK(MachineState, (obj), TYPE_MACHINE)
  57 #define MACHINE_GET_CLASS(obj) \
  58     OBJECT_GET_CLASS(MachineClass, (obj), TYPE_MACHINE)
  59 #define MACHINE_CLASS(klass) \
  60     OBJECT_CLASS_CHECK(MachineClass, (klass), TYPE_MACHINE)
  61
  62 extern MachineState *current_machine;
  63
  64 void machine_run_board_init(MachineState *machine);
  65 bool machine_usb(MachineState *machine);
  66 bool machine_kernel_irqchip_allowed(MachineState *machine);
  67 bool machine_kernel_irqchip_required(MachineState *machine);
  68 bool machine_kernel_irqchip_split(MachineState *machine);
  69 int machine_kvm_shadow_mem(MachineState *machine);
  70 int machine_phandle_start(MachineState *machine);
  71 bool machine_dump_guest_core(MachineState *machine);
  72 bool machine_mem_merge(MachineState *machine);
  73 HotpluggableCPUList *machine_query_hotpluggable_cpus(MachineState *machine);
  74 void machine_set_cpu_numa_node(MachineState *machine,
  75                                const CpuInstanceProperties *props,
  76                                Error **errp);
  77
  78 void machine_class_allow_dynamic_sysbus_dev(MachineClass *mc, const char *type);
  79
  80
  81 /**
  82  * CPUArchId:
  83  * @arch_id - architecture-dependent CPU ID of present or possible CPU
  84  * @cpu - pointer to corresponding CPU object if it's present on NULL otherwise
  85  * @type - QOM class name of possible @cpu object
  86  * @props - CPU object properties, initialized by board
  87  * #vcpus_count - number of threads provided by @cpu object
  88  */
  89 typedef struct {
  90     uint64_t arch_id;
  91     int64_t vcpus_count;
  92     CpuInstanceProperties props;
  93     Object *cpu;
  94     const char *type;
  95 } CPUArchId;
  96
  97 /**
  98  * CPUArchIdList:
  99  * @len - number of @CPUArchId items in @cpus array
 100  * @cpus - array of present or possible CPUs for current machine configuration
 101  */
 102 typedef struct {
 103     int len;
 104     CPUArchId cpus[0];
 105 } CPUArchIdList;
 106
 107 /**
 108  * MachineClass:
 109  * @deprecation_reason: If set, the machine is marked as deprecated. The
 110  *    string should provide some clear information about what to use instead.
 111  * @max_cpus: maximum number of CPUs supported. Default: 1
 112  * @min_cpus: minimum number of CPUs supported. Default: 1
 113  * @default_cpus: number of CPUs instantiated if none are specified. Default: 1
 114  * @get_hotplug_handler: this function is called during bus-less
 115  *    device hotplug. If defined it returns pointer to an instance
 116  *    of HotplugHandler object, which handles hotplug operation
 117  *    for a given @dev. It may return NULL if @dev doesn't require
 118  *    any actions to be performed by hotplug handler.
 119  * @cpu_index_to_instance_props:
 120  *    used to provide @cpu_index to socket/core/thread number mapping, allowing
 121  *    legacy code to perform maping from cpu_index to topology properties
 122  *    Returns: tuple of socket/core/thread ids given cpu_index belongs to.
 123  *    used to provide @cpu_index to socket number mapping, allowing
 124  *    a machine to group CPU threads belonging to the same socket/package
 125  *    Returns: socket number given cpu_index belongs to.
 126  * @hw_version:
 127  *    Value of QEMU_VERSION when the machine was added to QEMU.
 128  *    Set only by old machines because they need to keep
 129  *    compatibility on code that exposed QEMU_VERSION to guests in
 130  *    the past (and now use qemu_hw_version()).
 131  * @possible_cpu_arch_ids:
 132  *    Returns an array of @CPUArchId architecture-dependent CPU IDs
 133  *    which includes CPU IDs for present and possible to hotplug CPUs.
 134  *    Caller is responsible for freeing returned list.
 135  * @get_default_cpu_node_id:
 136  *    returns default board specific node_id value for CPU slot specified by
 137  *    index @idx in @ms->possible_cpus[]
 138  * @has_hotpluggable_cpus:
 139  *    If true, board supports CPUs creation with -device/device_add.
 140  * @default_cpu_type:
 141  *    specifies default CPU_TYPE, which will be used for parsing target
 142  *    specific features and for creating CPUs if CPU name wasn't provided
 143  *    explicitly at CLI
 144  * @minimum_page_bits:
 145  *    If non-zero, the board promises never to create a CPU with a page size
 146  *    smaller than this, so QEMU can use a more efficient larger page
 147  *    size than the target architecture's minimum. (Attempting to create
 148  *    such a CPU will fail.) Note that changing this is a migration
 149  *    compatibility break for the machine.
 150  * @ignore_memory_transaction_failures:
 151  *    If this is flag is true then the CPU will ignore memory transaction
 152  *    failures which should cause the CPU to take an exception due to an
 153  *    access to an unassigned physical address; the transaction will instead
 154  *    return zero (for a read) or be ignored (for a write). This should be
 155  *    set only by legacy board models which rely on the old RAZ/WI behaviour
 156  *    for handling devices that QEMU does not yet model. New board models
 157  *    should instead use "unimplemented-device" for all memory ranges where
 158  *    the guest will attempt to probe for a device that QEMU doesn't
 159  *    implement and a stub device is required.
 160  * @kvm_type:
 161  *    Return the type of KVM corresponding to the kvm-type string option or
 162  *    computed based on other criteria such as the host kernel capabilities.
 163  */
 164 struct MachineClass {
 165     /*< private >*/
 166     ObjectClass parent_class;
 167     /*< public >*/
 168
 169     const char *family; /* NULL iff @name identifies a standalone machtype */
 170     char *name;
 171     const char *alias;
 172     const char *desc;
 173     const char *deprecation_reason;
 174
 175     void (*init)(MachineState *state);
 176     void (*reset)(void);
 177     void (*hot_add_cpu)(const int64_t id, Error **errp);
 178     int (*kvm_type)(MachineState *machine, const char *arg);
 179
 180     BlockInterfaceType block_default_type;
 181     int units_per_default_bus;
 182     int max_cpus;
 183     int min_cpus;
 184     int default_cpus;
 185     unsigned int no_serial:1,
 186         no_parallel:1,
 187         no_floppy:1,
 188         no_cdrom:1,
 189         no_sdcard:1,
 190         pci_allow_0_address:1,
 191         legacy_fw_cfg_order:1;
 192     int is_default;
 193     const char *default_machine_opts;
 194     const char *default_boot_order;
 195     const char *default_display;
 196     GPtrArray *compat_props;
 197     const char *hw_version;
 198     ram_addr_t default_ram_size;
 199     const char *default_cpu_type;
 200     bool default_kernel_irqchip_split;
 201     bool option_rom_has_mr;
 202     bool rom_file_has_mr;
 203     int minimum_page_bits;
 204     bool has_hotpluggable_cpus;
 205     bool ignore_memory_transaction_failures;
 206     int numa_mem_align_shift;
 207     const char **valid_cpu_types;
 208     strList *allowed_dynamic_sysbus_devices;
 209     bool auto_enable_numa_with_memhp;
 210     void (*numa_auto_assign_ram)(MachineClass *mc, NodeInfo *nodes,
 211                                  int nb_nodes, ram_addr_t size);
 212     bool ignore_boot_device_suffixes;
 213     bool smbus_no_migration_support;
 214     bool nvdimm_supported;
 215
 216     HotplugHandler *(*get_hotplug_handler)(MachineState *machine,
 217                                            DeviceState *dev);
 218     CpuInstanceProperties (*cpu_index_to_instance_props)(MachineState *machine,
 219                                                          unsigned cpu_index);
 220     const CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine);
 221     int64_t (*get_default_cpu_node_id)(const MachineState *ms, int idx);
 222 };
 223
 224 /**
 225  * DeviceMemoryState:
 226  * @base: address in guest physical address space where the memory
 227  * address space for memory devices starts
 228  * @mr: address space container for memory devices
 229  */
 230 typedef struct DeviceMemoryState {
 231     hwaddr base;
 232     MemoryRegion mr;
 233 } DeviceMemoryState;
 234
 235 /**
 236  * CpuTopology:
 237  * @cpus: the number of present logical processors on the machine
 238  * @cores: the number of cores in one package
 239  * @threads: the number of threads in one core
 240  * @max_cpus: the maximum number of logical processors on the machine
 241  */
 242 typedef struct CpuTopology {
 243     unsigned int cpus;
 244     unsigned int cores;
 245     unsigned int threads;
 246     unsigned int max_cpus;
 247 } CpuTopology;
 248
 249 /**
 250  * MachineState:
 251  */
 252 struct MachineState {
 253     /*< private >*/
 254     Object parent_obj;
 255     Notifier sysbus_notifier;
 256
 257     /*< public >*/
 258
 259     char *accel;
 260     bool kernel_irqchip_allowed;
 261     bool kernel_irqchip_required;
 262     bool kernel_irqchip_split;
 263     int kvm_shadow_mem;
 264     char *dtb;
 265     char *dumpdtb;
 266     int phandle_start;
 267     char *dt_compatible;
 268     bool dump_guest_core;
 269     bool mem_merge;
 270     bool usb;
 271     bool usb_disabled;
 272     bool igd_gfx_passthru;
 273     char *firmware;
 274     bool iommu;
 275     bool suppress_vmdesc;
 276     bool enforce_config_section;
 277     bool enable_graphics;
 278     char *memory_encryption;
 279     DeviceMemoryState *device_memory;
 280
 281     ram_addr_t ram_size;
 282     ram_addr_t maxram_size;
 283     uint64_t   ram_slots;
 284     const char *boot_order;
 285     char *kernel_filename;
 286     char *kernel_cmdline;
 287     char *initrd_filename;
 288     const char *cpu_type;
 289     AccelState *accelerator;
 290     CPUArchIdList *possible_cpus;
 291     CpuTopology smp;
 292     struct NVDIMMState *nvdimms_state;
 293 };
 294
 295 #define DEFINE_MACHINE(namestr, machine_initfn) \
 296     static void machine_initfn##_class_init(ObjectClass *oc, void *data) \
 297     { \
 298         MachineClass *mc = MACHINE_CLASS(oc); \
 299         machine_initfn(mc); \
 300     } \
 301     static const TypeInfo machine_initfn##_typeinfo = { \
 302         .name       = MACHINE_TYPE_NAME(namestr), \
 303         .parent     = TYPE_MACHINE, \
 304         .class_init = machine_initfn##_class_init, \
 305     }; \
 306     static void machine_initfn##_register_types(void) \
 307     { \
 308         type_register_static(&machine_initfn##_typeinfo); \
 309     } \
 310     type_init(machine_initfn##_register_types)
 311
 312 extern GlobalProperty hw_compat_4_0[];
 313 extern const size_t hw_compat_4_0_len;
 314
 315 extern GlobalProperty hw_compat_3_1[];
 316 extern const size_t hw_compat_3_1_len;
 317
 318 extern GlobalProperty hw_compat_3_0[];
 319 extern const size_t hw_compat_3_0_len;
 320
 321 extern GlobalProperty hw_compat_2_12[];
 322 extern const size_t hw_compat_2_12_len;
 323
 324 extern GlobalProperty hw_compat_2_11[];
 325 extern const size_t hw_compat_2_11_len;
 326
 327 extern GlobalProperty hw_compat_2_10[];
 328 extern const size_t hw_compat_2_10_len;
 329
 330 extern GlobalProperty hw_compat_2_9[];
 331 extern const size_t hw_compat_2_9_len;
 332
 333 extern GlobalProperty hw_compat_2_8[];
 334 extern const size_t hw_compat_2_8_len;
 335
 336 extern GlobalProperty hw_compat_2_7[];
 337 extern const size_t hw_compat_2_7_len;
 338
 339 extern GlobalProperty hw_compat_2_6[];
 340 extern const size_t hw_compat_2_6_len;
 341
 342 extern GlobalProperty hw_compat_2_5[];
 343 extern const size_t hw_compat_2_5_len;
 344
 345 extern GlobalProperty hw_compat_2_4[];
 346 extern const size_t hw_compat_2_4_len;
 347
 348 extern GlobalProperty hw_compat_2_3[];
 349 extern const size_t hw_compat_2_3_len;
 350
 351 extern GlobalProperty hw_compat_2_2[];
 352 extern const size_t hw_compat_2_2_len;
 353
 354 extern GlobalProperty hw_compat_2_1[];
 355 extern const size_t hw_compat_2_1_len;
 356
 357 #endif