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 "qom/object.h" 10 #include "qom/cpu.h" 11 12 /** 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 18 * 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()). 22 * 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. 28 * 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. 35 * 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(). 39 */ 40 void memory_region_allocate_system_memory(MemoryRegion *mr, Object *owner, 41 const char *name, 42 uint64_t ram_size); 43 44 #define TYPE_MACHINE_SUFFIX "-machine" 45 46 /* Machine class name that needs to be used for class-name-based machine 47 * type lookup to work. 48 */ 49 #define MACHINE_TYPE_NAME(machinename) (machinename TYPE_MACHINE_SUFFIX) 50 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) 59 60 MachineClass *find_default_machine(void); 61 extern MachineState *current_machine; 62 63 void machine_run_board_init(MachineState *machine); 64 bool machine_usb(MachineState *machine); 65 bool machine_kernel_irqchip_allowed(MachineState *machine); 66 bool machine_kernel_irqchip_required(MachineState *machine); 67 bool machine_kernel_irqchip_split(MachineState *machine); 68 int machine_kvm_shadow_mem(MachineState *machine); 69 int machine_phandle_start(MachineState *machine); 70 bool machine_dump_guest_core(MachineState *machine); 71 bool machine_mem_merge(MachineState *machine); 72 void machine_register_compat_props(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 */ 161 struct MachineClass { 162 /*< private >*/ 163 ObjectClass parent_class; 164 /*< public >*/ 165 166 const char *family; /* NULL iff @name identifies a standalone machtype */ 167 char *name; 168 const char *alias; 169 const char *desc; 170 const char *deprecation_reason; 171 172 void (*init)(MachineState *state); 173 void (*reset)(void); 174 void (*hot_add_cpu)(const int64_t id, Error **errp); 175 int (*kvm_type)(const char *arg); 176 177 BlockInterfaceType block_default_type; 178 int units_per_default_bus; 179 int max_cpus; 180 int min_cpus; 181 int default_cpus; 182 unsigned int no_serial:1, 183 no_parallel:1, 184 use_virtcon:1, 185 no_floppy:1, 186 no_cdrom:1, 187 no_sdcard:1, 188 pci_allow_0_address:1, 189 legacy_fw_cfg_order:1; 190 int is_default; 191 const char *default_machine_opts; 192 const char *default_boot_order; 193 const char *default_display; 194 GArray *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; 211 212 HotplugHandler *(*get_hotplug_handler)(MachineState *machine, 213 DeviceState *dev); 214 CpuInstanceProperties (*cpu_index_to_instance_props)(MachineState *machine, 215 unsigned cpu_index); 216 const CPUArchIdList *(*possible_cpu_arch_ids)(MachineState *machine); 217 int64_t (*get_default_cpu_node_id)(const MachineState *ms, int idx); 218 }; 219 220 /** 221 * DeviceMemoryState: 222 * @base: address in guest physical address space where the memory 223 * address space for memory devices starts 224 * @mr: address space container for memory devices 225 */ 226 typedef struct DeviceMemoryState { 227 hwaddr base; 228 MemoryRegion mr; 229 } DeviceMemoryState; 230 231 /** 232 * MachineState: 233 */ 234 struct MachineState { 235 /*< private >*/ 236 Object parent_obj; 237 Notifier sysbus_notifier; 238 239 /*< public >*/ 240 241 char *accel; 242 bool kernel_irqchip_allowed; 243 bool kernel_irqchip_required; 244 bool kernel_irqchip_split; 245 int kvm_shadow_mem; 246 char *dtb; 247 char *dumpdtb; 248 int phandle_start; 249 char *dt_compatible; 250 bool dump_guest_core; 251 bool mem_merge; 252 bool usb; 253 bool usb_disabled; 254 bool igd_gfx_passthru; 255 char *firmware; 256 bool iommu; 257 bool suppress_vmdesc; 258 bool enforce_config_section; 259 bool enable_graphics; 260 char *memory_encryption; 261 DeviceMemoryState *device_memory; 262 263 ram_addr_t ram_size; 264 ram_addr_t maxram_size; 265 uint64_t ram_slots; 266 const char *boot_order; 267 char *kernel_filename; 268 char *kernel_cmdline; 269 char *initrd_filename; 270 const char *cpu_type; 271 AccelState *accelerator; 272 CPUArchIdList *possible_cpus; 273 }; 274 275 #define DEFINE_MACHINE(namestr, machine_initfn) \ 276 static void machine_initfn##_class_init(ObjectClass *oc, void *data) \ 277 { \ 278 MachineClass *mc = MACHINE_CLASS(oc); \ 279 machine_initfn(mc); \ 280 } \ 281 static const TypeInfo machine_initfn##_typeinfo = { \ 282 .name = MACHINE_TYPE_NAME(namestr), \ 283 .parent = TYPE_MACHINE, \ 284 .class_init = machine_initfn##_class_init, \ 285 }; \ 286 static void machine_initfn##_register_types(void) \ 287 { \ 288 type_register_static(&machine_initfn##_typeinfo); \ 289 } \ 290 type_init(machine_initfn##_register_types) 291 292 #define SET_MACHINE_COMPAT(m, COMPAT) \ 293 do { \ 294 int i; \ 295 static GlobalProperty props[] = { \ 296 COMPAT \ 297 { /* end of list */ } \ 298 }; \ 299 if (!m->compat_props) { \ 300 m->compat_props = g_array_new(false, false, sizeof(void *)); \ 301 } \ 302 for (i = 0; props[i].driver != NULL; i++) { \ 303 GlobalProperty *prop = &props[i]; \ 304 g_array_append_val(m->compat_props, prop); \ 305 } \ 306 } while (0) 307 308 #endif 309