memory_hotplug.c (26783B)
1#include "qemu/osdep.h" 2#include "hw/acpi/memory_hotplug.h" 3#include "hw/acpi/pc-hotplug.h" 4#include "hw/mem/pc-dimm.h" 5#include "hw/qdev-core.h" 6#include "migration/vmstate.h" 7#include "trace.h" 8#include "qapi/error.h" 9#include "qapi/qapi-events-acpi.h" 10#include "qapi/qapi-events-machine.h" 11#include "qapi/qapi-events-qdev.h" 12 13#define MEMORY_SLOTS_NUMBER "MDNR" 14#define MEMORY_HOTPLUG_IO_REGION "HPMR" 15#define MEMORY_SLOT_ADDR_LOW "MRBL" 16#define MEMORY_SLOT_ADDR_HIGH "MRBH" 17#define MEMORY_SLOT_SIZE_LOW "MRLL" 18#define MEMORY_SLOT_SIZE_HIGH "MRLH" 19#define MEMORY_SLOT_PROXIMITY "MPX" 20#define MEMORY_SLOT_ENABLED "MES" 21#define MEMORY_SLOT_INSERT_EVENT "MINS" 22#define MEMORY_SLOT_REMOVE_EVENT "MRMV" 23#define MEMORY_SLOT_EJECT "MEJ" 24#define MEMORY_SLOT_SLECTOR "MSEL" 25#define MEMORY_SLOT_OST_EVENT "MOEV" 26#define MEMORY_SLOT_OST_STATUS "MOSC" 27#define MEMORY_SLOT_LOCK "MLCK" 28#define MEMORY_SLOT_STATUS_METHOD "MRST" 29#define MEMORY_SLOT_CRS_METHOD "MCRS" 30#define MEMORY_SLOT_OST_METHOD "MOST" 31#define MEMORY_SLOT_PROXIMITY_METHOD "MPXM" 32#define MEMORY_SLOT_EJECT_METHOD "MEJ0" 33#define MEMORY_SLOT_NOTIFY_METHOD "MTFY" 34#define MEMORY_HOTPLUG_DEVICE "MHPD" 35 36static ACPIOSTInfo *acpi_memory_device_status(int slot, MemStatus *mdev) 37{ 38 ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1); 39 40 info->slot_type = ACPI_SLOT_TYPE_DIMM; 41 info->slot = g_strdup_printf("%d", slot); 42 info->source = mdev->ost_event; 43 info->status = mdev->ost_status; 44 if (mdev->dimm) { 45 DeviceState *dev = DEVICE(mdev->dimm); 46 if (dev->id) { 47 info->device = g_strdup(dev->id); 48 info->has_device = true; 49 } 50 } 51 return info; 52} 53 54void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list) 55{ 56 ACPIOSTInfoList ***tail = list; 57 int i; 58 59 for (i = 0; i < mem_st->dev_count; i++) { 60 QAPI_LIST_APPEND(*tail, 61 acpi_memory_device_status(i, &mem_st->devs[i])); 62 } 63} 64 65static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr, 66 unsigned int size) 67{ 68 uint32_t val = 0; 69 MemHotplugState *mem_st = opaque; 70 MemStatus *mdev; 71 Object *o; 72 73 if (mem_st->selector >= mem_st->dev_count) { 74 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 75 return 0; 76 } 77 78 mdev = &mem_st->devs[mem_st->selector]; 79 o = OBJECT(mdev->dimm); 80 switch (addr) { 81 case 0x0: /* Lo part of phys address where DIMM is mapped */ 82 val = o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) : 0; 83 trace_mhp_acpi_read_addr_lo(mem_st->selector, val); 84 break; 85 case 0x4: /* Hi part of phys address where DIMM is mapped */ 86 val = 87 o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) >> 32 : 0; 88 trace_mhp_acpi_read_addr_hi(mem_st->selector, val); 89 break; 90 case 0x8: /* Lo part of DIMM size */ 91 val = o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) : 0; 92 trace_mhp_acpi_read_size_lo(mem_st->selector, val); 93 break; 94 case 0xc: /* Hi part of DIMM size */ 95 val = 96 o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) >> 32 : 0; 97 trace_mhp_acpi_read_size_hi(mem_st->selector, val); 98 break; 99 case 0x10: /* node proximity for _PXM method */ 100 val = o ? object_property_get_uint(o, PC_DIMM_NODE_PROP, NULL) : 0; 101 trace_mhp_acpi_read_pxm(mem_st->selector, val); 102 break; 103 case 0x14: /* pack and return is_* fields */ 104 val |= mdev->is_enabled ? 1 : 0; 105 val |= mdev->is_inserting ? 2 : 0; 106 val |= mdev->is_removing ? 4 : 0; 107 trace_mhp_acpi_read_flags(mem_st->selector, val); 108 break; 109 default: 110 val = ~0; 111 break; 112 } 113 return val; 114} 115 116static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data, 117 unsigned int size) 118{ 119 MemHotplugState *mem_st = opaque; 120 MemStatus *mdev; 121 ACPIOSTInfo *info; 122 DeviceState *dev = NULL; 123 HotplugHandler *hotplug_ctrl = NULL; 124 Error *local_err = NULL; 125 126 if (!mem_st->dev_count) { 127 return; 128 } 129 130 if (addr) { 131 if (mem_st->selector >= mem_st->dev_count) { 132 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 133 return; 134 } 135 } 136 137 switch (addr) { 138 case 0x0: /* DIMM slot selector */ 139 mem_st->selector = data; 140 trace_mhp_acpi_write_slot(mem_st->selector); 141 break; 142 case 0x4: /* _OST event */ 143 mdev = &mem_st->devs[mem_st->selector]; 144 if (data == 1) { 145 /* TODO: handle device insert OST event */ 146 } else if (data == 3) { 147 /* TODO: handle device remove OST event */ 148 } 149 mdev->ost_event = data; 150 trace_mhp_acpi_write_ost_ev(mem_st->selector, mdev->ost_event); 151 break; 152 case 0x8: /* _OST status */ 153 mdev = &mem_st->devs[mem_st->selector]; 154 mdev->ost_status = data; 155 trace_mhp_acpi_write_ost_status(mem_st->selector, mdev->ost_status); 156 /* TODO: implement memory removal on guest signal */ 157 158 info = acpi_memory_device_status(mem_st->selector, mdev); 159 qapi_event_send_acpi_device_ost(info); 160 qapi_free_ACPIOSTInfo(info); 161 break; 162 case 0x14: /* set is_* fields */ 163 mdev = &mem_st->devs[mem_st->selector]; 164 if (data & 2) { /* clear insert event */ 165 mdev->is_inserting = false; 166 trace_mhp_acpi_clear_insert_evt(mem_st->selector); 167 } else if (data & 4) { 168 mdev->is_removing = false; 169 trace_mhp_acpi_clear_remove_evt(mem_st->selector); 170 } else if (data & 8) { 171 if (!mdev->is_enabled) { 172 trace_mhp_acpi_ejecting_invalid_slot(mem_st->selector); 173 break; 174 } 175 176 dev = DEVICE(mdev->dimm); 177 hotplug_ctrl = qdev_get_hotplug_handler(dev); 178 /* call pc-dimm unplug cb */ 179 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err); 180 if (local_err) { 181 trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector); 182 183 /* 184 * Send both MEM_UNPLUG_ERROR and DEVICE_UNPLUG_GUEST_ERROR 185 * while the deprecation of MEM_UNPLUG_ERROR is 186 * pending. 187 */ 188 qapi_event_send_mem_unplug_error(dev->id ? : "", 189 error_get_pretty(local_err)); 190 qapi_event_send_device_unplug_guest_error(!!dev->id, dev->id, 191 dev->canonical_path); 192 error_free(local_err); 193 break; 194 } 195 object_unparent(OBJECT(dev)); 196 trace_mhp_acpi_pc_dimm_deleted(mem_st->selector); 197 } 198 break; 199 default: 200 break; 201 } 202 203} 204static const MemoryRegionOps acpi_memory_hotplug_ops = { 205 .read = acpi_memory_hotplug_read, 206 .write = acpi_memory_hotplug_write, 207 .endianness = DEVICE_LITTLE_ENDIAN, 208 .valid = { 209 .min_access_size = 1, 210 .max_access_size = 4, 211 }, 212}; 213 214void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner, 215 MemHotplugState *state, hwaddr io_base) 216{ 217 MachineState *machine = MACHINE(qdev_get_machine()); 218 219 state->dev_count = machine->ram_slots; 220 if (!state->dev_count) { 221 return; 222 } 223 224 state->devs = g_malloc0(sizeof(*state->devs) * state->dev_count); 225 memory_region_init_io(&state->io, owner, &acpi_memory_hotplug_ops, state, 226 "acpi-mem-hotplug", MEMORY_HOTPLUG_IO_LEN); 227 memory_region_add_subregion(as, io_base, &state->io); 228} 229 230/** 231 * acpi_memory_slot_status: 232 * @mem_st: memory hotplug state 233 * @dev: device 234 * @errp: set in case of an error 235 * 236 * Obtain a single memory slot status. 237 * 238 * This function will be called by memory unplug request cb and unplug cb. 239 */ 240static MemStatus * 241acpi_memory_slot_status(MemHotplugState *mem_st, 242 DeviceState *dev, Error **errp) 243{ 244 Error *local_err = NULL; 245 int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, 246 &local_err); 247 248 if (local_err) { 249 error_propagate(errp, local_err); 250 return NULL; 251 } 252 253 if (slot >= mem_st->dev_count) { 254 char *dev_path = object_get_canonical_path(OBJECT(dev)); 255 error_setg(errp, "acpi_memory_slot_status: " 256 "device [%s] returned invalid memory slot[%d]", 257 dev_path, slot); 258 g_free(dev_path); 259 return NULL; 260 } 261 262 return &mem_st->devs[slot]; 263} 264 265void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, MemHotplugState *mem_st, 266 DeviceState *dev, Error **errp) 267{ 268 MemStatus *mdev; 269 DeviceClass *dc = DEVICE_GET_CLASS(dev); 270 271 if (!dc->hotpluggable) { 272 return; 273 } 274 275 mdev = acpi_memory_slot_status(mem_st, dev, errp); 276 if (!mdev) { 277 return; 278 } 279 280 mdev->dimm = dev; 281 mdev->is_enabled = true; 282 if (dev->hotplugged) { 283 mdev->is_inserting = true; 284 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS); 285 } 286} 287 288void acpi_memory_unplug_request_cb(HotplugHandler *hotplug_dev, 289 MemHotplugState *mem_st, 290 DeviceState *dev, Error **errp) 291{ 292 MemStatus *mdev; 293 294 mdev = acpi_memory_slot_status(mem_st, dev, errp); 295 if (!mdev) { 296 return; 297 } 298 299 mdev->is_removing = true; 300 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS); 301} 302 303void acpi_memory_unplug_cb(MemHotplugState *mem_st, 304 DeviceState *dev, Error **errp) 305{ 306 MemStatus *mdev; 307 308 mdev = acpi_memory_slot_status(mem_st, dev, errp); 309 if (!mdev) { 310 return; 311 } 312 313 mdev->is_enabled = false; 314 mdev->dimm = NULL; 315} 316 317static const VMStateDescription vmstate_memhp_sts = { 318 .name = "memory hotplug device state", 319 .version_id = 1, 320 .minimum_version_id = 1, 321 .minimum_version_id_old = 1, 322 .fields = (VMStateField[]) { 323 VMSTATE_BOOL(is_enabled, MemStatus), 324 VMSTATE_BOOL(is_inserting, MemStatus), 325 VMSTATE_UINT32(ost_event, MemStatus), 326 VMSTATE_UINT32(ost_status, MemStatus), 327 VMSTATE_END_OF_LIST() 328 } 329}; 330 331const VMStateDescription vmstate_memory_hotplug = { 332 .name = "memory hotplug state", 333 .version_id = 1, 334 .minimum_version_id = 1, 335 .minimum_version_id_old = 1, 336 .fields = (VMStateField[]) { 337 VMSTATE_UINT32(selector, MemHotplugState), 338 VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, MemHotplugState, dev_count, 339 vmstate_memhp_sts, MemStatus), 340 VMSTATE_END_OF_LIST() 341 } 342}; 343 344void build_memory_hotplug_aml(Aml *table, uint32_t nr_mem, 345 const char *res_root, 346 const char *event_handler_method, 347 AmlRegionSpace rs, hwaddr memhp_io_base) 348{ 349 int i; 350 Aml *ifctx; 351 Aml *method; 352 Aml *dev_container; 353 Aml *mem_ctrl_dev; 354 char *mhp_res_path; 355 356 mhp_res_path = g_strdup_printf("%s." MEMORY_HOTPLUG_DEVICE, res_root); 357 mem_ctrl_dev = aml_device("%s", mhp_res_path); 358 { 359 Aml *crs; 360 361 aml_append(mem_ctrl_dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 362 aml_append(mem_ctrl_dev, 363 aml_name_decl("_UID", aml_string("Memory hotplug resources"))); 364 365 crs = aml_resource_template(); 366 if (rs == AML_SYSTEM_IO) { 367 aml_append(crs, 368 aml_io(AML_DECODE16, memhp_io_base, memhp_io_base, 0, 369 MEMORY_HOTPLUG_IO_LEN) 370 ); 371 } else { 372 aml_append(crs, aml_memory32_fixed(memhp_io_base, 373 MEMORY_HOTPLUG_IO_LEN, AML_READ_WRITE)); 374 } 375 aml_append(mem_ctrl_dev, aml_name_decl("_CRS", crs)); 376 377 aml_append(mem_ctrl_dev, aml_operation_region( 378 MEMORY_HOTPLUG_IO_REGION, rs, 379 aml_int(memhp_io_base), MEMORY_HOTPLUG_IO_LEN) 380 ); 381 382 } 383 aml_append(table, mem_ctrl_dev); 384 385 dev_container = aml_device(MEMORY_DEVICES_CONTAINER); 386 { 387 Aml *field; 388 Aml *one = aml_int(1); 389 Aml *zero = aml_int(0); 390 Aml *ret_val = aml_local(0); 391 Aml *slot_arg0 = aml_arg(0); 392 Aml *slots_nr = aml_name(MEMORY_SLOTS_NUMBER); 393 Aml *ctrl_lock = aml_name(MEMORY_SLOT_LOCK); 394 Aml *slot_selector = aml_name(MEMORY_SLOT_SLECTOR); 395 char *mmio_path = g_strdup_printf("%s." MEMORY_HOTPLUG_IO_REGION, 396 mhp_res_path); 397 398 aml_append(dev_container, aml_name_decl("_HID", aml_string("PNP0A06"))); 399 aml_append(dev_container, 400 aml_name_decl("_UID", aml_string("DIMM devices"))); 401 402 assert(nr_mem <= ACPI_MAX_RAM_SLOTS); 403 aml_append(dev_container, 404 aml_name_decl(MEMORY_SLOTS_NUMBER, aml_int(nr_mem)) 405 ); 406 407 field = aml_field(mmio_path, AML_DWORD_ACC, 408 AML_NOLOCK, AML_PRESERVE); 409 aml_append(field, /* read only */ 410 aml_named_field(MEMORY_SLOT_ADDR_LOW, 32)); 411 aml_append(field, /* read only */ 412 aml_named_field(MEMORY_SLOT_ADDR_HIGH, 32)); 413 aml_append(field, /* read only */ 414 aml_named_field(MEMORY_SLOT_SIZE_LOW, 32)); 415 aml_append(field, /* read only */ 416 aml_named_field(MEMORY_SLOT_SIZE_HIGH, 32)); 417 aml_append(field, /* read only */ 418 aml_named_field(MEMORY_SLOT_PROXIMITY, 32)); 419 aml_append(dev_container, field); 420 421 field = aml_field(mmio_path, AML_BYTE_ACC, 422 AML_NOLOCK, AML_WRITE_AS_ZEROS); 423 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */)); 424 aml_append(field, /* 1 if enabled, read only */ 425 aml_named_field(MEMORY_SLOT_ENABLED, 1)); 426 aml_append(field, 427 /*(read) 1 if has a insert event. (write) 1 to clear event */ 428 aml_named_field(MEMORY_SLOT_INSERT_EVENT, 1)); 429 aml_append(field, 430 /* (read) 1 if has a remove event. (write) 1 to clear event */ 431 aml_named_field(MEMORY_SLOT_REMOVE_EVENT, 1)); 432 aml_append(field, 433 /* initiates device eject, write only */ 434 aml_named_field(MEMORY_SLOT_EJECT, 1)); 435 aml_append(dev_container, field); 436 437 field = aml_field(mmio_path, AML_DWORD_ACC, 438 AML_NOLOCK, AML_PRESERVE); 439 aml_append(field, /* DIMM selector, write only */ 440 aml_named_field(MEMORY_SLOT_SLECTOR, 32)); 441 aml_append(field, /* _OST event code, write only */ 442 aml_named_field(MEMORY_SLOT_OST_EVENT, 32)); 443 aml_append(field, /* _OST status code, write only */ 444 aml_named_field(MEMORY_SLOT_OST_STATUS, 32)); 445 aml_append(dev_container, field); 446 g_free(mmio_path); 447 448 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 449 ifctx = aml_if(aml_equal(slots_nr, zero)); 450 { 451 aml_append(ifctx, aml_return(zero)); 452 } 453 aml_append(method, ifctx); 454 /* present, functioning, decoding, not shown in UI */ 455 aml_append(method, aml_return(aml_int(0xB))); 456 aml_append(dev_container, method); 457 458 aml_append(dev_container, aml_mutex(MEMORY_SLOT_LOCK, 0)); 459 460 method = aml_method(MEMORY_SLOT_SCAN_METHOD, 0, AML_NOTSERIALIZED); 461 { 462 Aml *else_ctx; 463 Aml *while_ctx; 464 Aml *idx = aml_local(0); 465 Aml *eject_req = aml_int(3); 466 Aml *dev_chk = aml_int(1); 467 468 ifctx = aml_if(aml_equal(slots_nr, zero)); 469 { 470 aml_append(ifctx, aml_return(zero)); 471 } 472 aml_append(method, ifctx); 473 474 aml_append(method, aml_store(zero, idx)); 475 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 476 /* build AML that: 477 * loops over all slots and Notifies DIMMs with 478 * Device Check or Eject Request notifications if 479 * slot has corresponding status bit set and clears 480 * slot status. 481 */ 482 while_ctx = aml_while(aml_lless(idx, slots_nr)); 483 { 484 Aml *ins_evt = aml_name(MEMORY_SLOT_INSERT_EVENT); 485 Aml *rm_evt = aml_name(MEMORY_SLOT_REMOVE_EVENT); 486 487 aml_append(while_ctx, aml_store(idx, slot_selector)); 488 ifctx = aml_if(aml_equal(ins_evt, one)); 489 { 490 aml_append(ifctx, 491 aml_call2(MEMORY_SLOT_NOTIFY_METHOD, 492 idx, dev_chk)); 493 aml_append(ifctx, aml_store(one, ins_evt)); 494 } 495 aml_append(while_ctx, ifctx); 496 497 else_ctx = aml_else(); 498 ifctx = aml_if(aml_equal(rm_evt, one)); 499 { 500 aml_append(ifctx, 501 aml_call2(MEMORY_SLOT_NOTIFY_METHOD, 502 idx, eject_req)); 503 aml_append(ifctx, aml_store(one, rm_evt)); 504 } 505 aml_append(else_ctx, ifctx); 506 aml_append(while_ctx, else_ctx); 507 508 aml_append(while_ctx, aml_add(idx, one, idx)); 509 } 510 aml_append(method, while_ctx); 511 aml_append(method, aml_release(ctrl_lock)); 512 aml_append(method, aml_return(one)); 513 } 514 aml_append(dev_container, method); 515 516 method = aml_method(MEMORY_SLOT_STATUS_METHOD, 1, AML_NOTSERIALIZED); 517 { 518 Aml *slot_enabled = aml_name(MEMORY_SLOT_ENABLED); 519 520 aml_append(method, aml_store(zero, ret_val)); 521 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 522 aml_append(method, 523 aml_store(aml_to_integer(slot_arg0), slot_selector)); 524 525 ifctx = aml_if(aml_equal(slot_enabled, one)); 526 { 527 aml_append(ifctx, aml_store(aml_int(0xF), ret_val)); 528 } 529 aml_append(method, ifctx); 530 531 aml_append(method, aml_release(ctrl_lock)); 532 aml_append(method, aml_return(ret_val)); 533 } 534 aml_append(dev_container, method); 535 536 method = aml_method(MEMORY_SLOT_CRS_METHOD, 1, AML_SERIALIZED); 537 { 538 Aml *mr64 = aml_name("MR64"); 539 Aml *mr32 = aml_name("MR32"); 540 Aml *crs_tmpl = aml_resource_template(); 541 Aml *minl = aml_name("MINL"); 542 Aml *minh = aml_name("MINH"); 543 Aml *maxl = aml_name("MAXL"); 544 Aml *maxh = aml_name("MAXH"); 545 Aml *lenl = aml_name("LENL"); 546 Aml *lenh = aml_name("LENH"); 547 548 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 549 aml_append(method, aml_store(aml_to_integer(slot_arg0), 550 slot_selector)); 551 552 aml_append(crs_tmpl, 553 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 554 AML_CACHEABLE, AML_READ_WRITE, 555 0, 0x0, 0xFFFFFFFFFFFFFFFEULL, 0, 556 0xFFFFFFFFFFFFFFFFULL)); 557 aml_append(method, aml_name_decl("MR64", crs_tmpl)); 558 aml_append(method, 559 aml_create_dword_field(mr64, aml_int(14), "MINL")); 560 aml_append(method, 561 aml_create_dword_field(mr64, aml_int(18), "MINH")); 562 aml_append(method, 563 aml_create_dword_field(mr64, aml_int(38), "LENL")); 564 aml_append(method, 565 aml_create_dword_field(mr64, aml_int(42), "LENH")); 566 aml_append(method, 567 aml_create_dword_field(mr64, aml_int(22), "MAXL")); 568 aml_append(method, 569 aml_create_dword_field(mr64, aml_int(26), "MAXH")); 570 571 aml_append(method, 572 aml_store(aml_name(MEMORY_SLOT_ADDR_HIGH), minh)); 573 aml_append(method, 574 aml_store(aml_name(MEMORY_SLOT_ADDR_LOW), minl)); 575 aml_append(method, 576 aml_store(aml_name(MEMORY_SLOT_SIZE_HIGH), lenh)); 577 aml_append(method, 578 aml_store(aml_name(MEMORY_SLOT_SIZE_LOW), lenl)); 579 580 /* 64-bit math: MAX = MIN + LEN - 1 */ 581 aml_append(method, aml_add(minl, lenl, maxl)); 582 aml_append(method, aml_add(minh, lenh, maxh)); 583 ifctx = aml_if(aml_lless(maxl, minl)); 584 { 585 aml_append(ifctx, aml_add(maxh, one, maxh)); 586 } 587 aml_append(method, ifctx); 588 ifctx = aml_if(aml_lless(maxl, one)); 589 { 590 aml_append(ifctx, aml_subtract(maxh, one, maxh)); 591 } 592 aml_append(method, ifctx); 593 aml_append(method, aml_subtract(maxl, one, maxl)); 594 595 /* return 32-bit _CRS if addr/size is in low mem */ 596 /* TODO: remove it since all hotplugged DIMMs are in high mem */ 597 ifctx = aml_if(aml_equal(maxh, zero)); 598 { 599 crs_tmpl = aml_resource_template(); 600 aml_append(crs_tmpl, 601 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, 602 AML_MAX_FIXED, AML_CACHEABLE, 603 AML_READ_WRITE, 604 0, 0x0, 0xFFFFFFFE, 0, 605 0xFFFFFFFF)); 606 aml_append(ifctx, aml_name_decl("MR32", crs_tmpl)); 607 aml_append(ifctx, 608 aml_create_dword_field(mr32, aml_int(10), "MIN")); 609 aml_append(ifctx, 610 aml_create_dword_field(mr32, aml_int(14), "MAX")); 611 aml_append(ifctx, 612 aml_create_dword_field(mr32, aml_int(22), "LEN")); 613 aml_append(ifctx, aml_store(minl, aml_name("MIN"))); 614 aml_append(ifctx, aml_store(maxl, aml_name("MAX"))); 615 aml_append(ifctx, aml_store(lenl, aml_name("LEN"))); 616 617 aml_append(ifctx, aml_release(ctrl_lock)); 618 aml_append(ifctx, aml_return(mr32)); 619 } 620 aml_append(method, ifctx); 621 622 aml_append(method, aml_release(ctrl_lock)); 623 aml_append(method, aml_return(mr64)); 624 } 625 aml_append(dev_container, method); 626 627 method = aml_method(MEMORY_SLOT_PROXIMITY_METHOD, 1, 628 AML_NOTSERIALIZED); 629 { 630 Aml *proximity = aml_name(MEMORY_SLOT_PROXIMITY); 631 632 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 633 aml_append(method, aml_store(aml_to_integer(slot_arg0), 634 slot_selector)); 635 aml_append(method, aml_store(proximity, ret_val)); 636 aml_append(method, aml_release(ctrl_lock)); 637 aml_append(method, aml_return(ret_val)); 638 } 639 aml_append(dev_container, method); 640 641 method = aml_method(MEMORY_SLOT_OST_METHOD, 4, AML_NOTSERIALIZED); 642 { 643 Aml *ost_evt = aml_name(MEMORY_SLOT_OST_EVENT); 644 Aml *ost_status = aml_name(MEMORY_SLOT_OST_STATUS); 645 646 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 647 aml_append(method, aml_store(aml_to_integer(slot_arg0), 648 slot_selector)); 649 aml_append(method, aml_store(aml_arg(1), ost_evt)); 650 aml_append(method, aml_store(aml_arg(2), ost_status)); 651 aml_append(method, aml_release(ctrl_lock)); 652 } 653 aml_append(dev_container, method); 654 655 method = aml_method(MEMORY_SLOT_EJECT_METHOD, 2, AML_NOTSERIALIZED); 656 { 657 Aml *eject = aml_name(MEMORY_SLOT_EJECT); 658 659 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 660 aml_append(method, aml_store(aml_to_integer(slot_arg0), 661 slot_selector)); 662 aml_append(method, aml_store(one, eject)); 663 aml_append(method, aml_release(ctrl_lock)); 664 } 665 aml_append(dev_container, method); 666 667 /* build memory devices */ 668 for (i = 0; i < nr_mem; i++) { 669 Aml *dev; 670 const char *s; 671 672 dev = aml_device("MP%02X", i); 673 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i))); 674 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80"))); 675 676 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 677 s = MEMORY_SLOT_CRS_METHOD; 678 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 679 aml_append(dev, method); 680 681 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 682 s = MEMORY_SLOT_STATUS_METHOD; 683 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 684 aml_append(dev, method); 685 686 method = aml_method("_PXM", 0, AML_NOTSERIALIZED); 687 s = MEMORY_SLOT_PROXIMITY_METHOD; 688 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 689 aml_append(dev, method); 690 691 method = aml_method("_OST", 3, AML_NOTSERIALIZED); 692 s = MEMORY_SLOT_OST_METHOD; 693 aml_append(method, 694 aml_call4(s, aml_name("_UID"), aml_arg(0), 695 aml_arg(1), aml_arg(2))); 696 aml_append(dev, method); 697 698 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 699 s = MEMORY_SLOT_EJECT_METHOD; 700 aml_append(method, 701 aml_call2(s, aml_name("_UID"), aml_arg(0))); 702 aml_append(dev, method); 703 704 aml_append(dev_container, dev); 705 } 706 707 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) { 708 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... } 709 */ 710 method = aml_method(MEMORY_SLOT_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); 711 for (i = 0; i < nr_mem; i++) { 712 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i))); 713 aml_append(ifctx, 714 aml_notify(aml_name("MP%.02X", i), aml_arg(1)) 715 ); 716 aml_append(method, ifctx); 717 } 718 aml_append(dev_container, method); 719 } 720 aml_append(table, dev_container); 721 722 if (event_handler_method) { 723 method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED); 724 aml_append(method, aml_call0(MEMORY_DEVICES_CONTAINER "." 725 MEMORY_SLOT_SCAN_METHOD)); 726 aml_append(table, method); 727 } 728 729 g_free(mhp_res_path); 730}