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