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 "trace.h" 8 #include "qapi-event.h" 9 10 #define MEMORY_SLOTS_NUMBER "MDNR" 11 #define MEMORY_HOTPLUG_IO_REGION "HPMR" 12 #define MEMORY_SLOT_ADDR_LOW "MRBL" 13 #define MEMORY_SLOT_ADDR_HIGH "MRBH" 14 #define MEMORY_SLOT_SIZE_LOW "MRLL" 15 #define MEMORY_SLOT_SIZE_HIGH "MRLH" 16 #define MEMORY_SLOT_PROXIMITY "MPX" 17 #define MEMORY_SLOT_ENABLED "MES" 18 #define MEMORY_SLOT_INSERT_EVENT "MINS" 19 #define MEMORY_SLOT_REMOVE_EVENT "MRMV" 20 #define MEMORY_SLOT_EJECT "MEJ" 21 #define MEMORY_SLOT_SLECTOR "MSEL" 22 #define MEMORY_SLOT_OST_EVENT "MOEV" 23 #define MEMORY_SLOT_OST_STATUS "MOSC" 24 #define MEMORY_SLOT_LOCK "MLCK" 25 #define MEMORY_SLOT_STATUS_METHOD "MRST" 26 #define MEMORY_SLOT_CRS_METHOD "MCRS" 27 #define MEMORY_SLOT_OST_METHOD "MOST" 28 #define MEMORY_SLOT_PROXIMITY_METHOD "MPXM" 29 #define MEMORY_SLOT_EJECT_METHOD "MEJ0" 30 #define MEMORY_SLOT_NOTIFY_METHOD "MTFY" 31 #define MEMORY_SLOT_SCAN_METHOD "MSCN" 32 #define MEMORY_HOTPLUG_DEVICE "MHPD" 33 #define MEMORY_HOTPLUG_IO_LEN 24 34 #define MEMORY_DEVICES_CONTAINER "\\_SB.MHPC" 35 36 static uint16_t memhp_io_base; 37 38 static ACPIOSTInfo *acpi_memory_device_status(int slot, MemStatus *mdev) 39 { 40 ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1); 41 42 info->slot_type = ACPI_SLOT_TYPE_DIMM; 43 info->slot = g_strdup_printf("%d", slot); 44 info->source = mdev->ost_event; 45 info->status = mdev->ost_status; 46 if (mdev->dimm) { 47 DeviceState *dev = DEVICE(mdev->dimm); 48 if (dev->id) { 49 info->device = g_strdup(dev->id); 50 info->has_device = true; 51 } 52 } 53 return info; 54 } 55 56 void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list) 57 { 58 int i; 59 60 for (i = 0; i < mem_st->dev_count; i++) { 61 ACPIOSTInfoList *elem = g_new0(ACPIOSTInfoList, 1); 62 elem->value = acpi_memory_device_status(i, &mem_st->devs[i]); 63 elem->next = NULL; 64 **list = elem; 65 *list = &elem->next; 66 } 67 } 68 69 static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr, 70 unsigned int size) 71 { 72 uint32_t val = 0; 73 MemHotplugState *mem_st = opaque; 74 MemStatus *mdev; 75 Object *o; 76 77 if (mem_st->selector >= mem_st->dev_count) { 78 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 79 return 0; 80 } 81 82 mdev = &mem_st->devs[mem_st->selector]; 83 o = OBJECT(mdev->dimm); 84 switch (addr) { 85 case 0x0: /* Lo part of phys address where DIMM is mapped */ 86 val = o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) : 0; 87 trace_mhp_acpi_read_addr_lo(mem_st->selector, val); 88 break; 89 case 0x4: /* Hi part of phys address where DIMM is mapped */ 90 val = 91 o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) >> 32 : 0; 92 trace_mhp_acpi_read_addr_hi(mem_st->selector, val); 93 break; 94 case 0x8: /* Lo part of DIMM size */ 95 val = o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) : 0; 96 trace_mhp_acpi_read_size_lo(mem_st->selector, val); 97 break; 98 case 0xc: /* Hi part of DIMM size */ 99 val = 100 o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) >> 32 : 0; 101 trace_mhp_acpi_read_size_hi(mem_st->selector, val); 102 break; 103 case 0x10: /* node proximity for _PXM method */ 104 val = o ? object_property_get_uint(o, PC_DIMM_NODE_PROP, NULL) : 0; 105 trace_mhp_acpi_read_pxm(mem_st->selector, val); 106 break; 107 case 0x14: /* pack and return is_* fields */ 108 val |= mdev->is_enabled ? 1 : 0; 109 val |= mdev->is_inserting ? 2 : 0; 110 val |= mdev->is_removing ? 4 : 0; 111 trace_mhp_acpi_read_flags(mem_st->selector, val); 112 break; 113 default: 114 val = ~0; 115 break; 116 } 117 return val; 118 } 119 120 static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data, 121 unsigned int size) 122 { 123 MemHotplugState *mem_st = opaque; 124 MemStatus *mdev; 125 ACPIOSTInfo *info; 126 DeviceState *dev = NULL; 127 HotplugHandler *hotplug_ctrl = NULL; 128 Error *local_err = NULL; 129 130 if (!mem_st->dev_count) { 131 return; 132 } 133 134 if (addr) { 135 if (mem_st->selector >= mem_st->dev_count) { 136 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 137 return; 138 } 139 } 140 141 switch (addr) { 142 case 0x0: /* DIMM slot selector */ 143 mem_st->selector = data; 144 trace_mhp_acpi_write_slot(mem_st->selector); 145 break; 146 case 0x4: /* _OST event */ 147 mdev = &mem_st->devs[mem_st->selector]; 148 if (data == 1) { 149 /* TODO: handle device insert OST event */ 150 } else if (data == 3) { 151 /* TODO: handle device remove OST event */ 152 } 153 mdev->ost_event = data; 154 trace_mhp_acpi_write_ost_ev(mem_st->selector, mdev->ost_event); 155 break; 156 case 0x8: /* _OST status */ 157 mdev = &mem_st->devs[mem_st->selector]; 158 mdev->ost_status = data; 159 trace_mhp_acpi_write_ost_status(mem_st->selector, mdev->ost_status); 160 /* TODO: implement memory removal on guest signal */ 161 162 info = acpi_memory_device_status(mem_st->selector, mdev); 163 qapi_event_send_acpi_device_ost(info, &error_abort); 164 qapi_free_ACPIOSTInfo(info); 165 break; 166 case 0x14: /* set is_* fields */ 167 mdev = &mem_st->devs[mem_st->selector]; 168 if (data & 2) { /* clear insert event */ 169 mdev->is_inserting = false; 170 trace_mhp_acpi_clear_insert_evt(mem_st->selector); 171 } else if (data & 4) { 172 mdev->is_removing = false; 173 trace_mhp_acpi_clear_remove_evt(mem_st->selector); 174 } else if (data & 8) { 175 if (!mdev->is_enabled) { 176 trace_mhp_acpi_ejecting_invalid_slot(mem_st->selector); 177 break; 178 } 179 180 dev = DEVICE(mdev->dimm); 181 hotplug_ctrl = qdev_get_hotplug_handler(dev); 182 /* call pc-dimm unplug cb */ 183 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err); 184 if (local_err) { 185 trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector); 186 qapi_event_send_mem_unplug_error(dev->id, 187 error_get_pretty(local_err), 188 &error_abort); 189 error_free(local_err); 190 break; 191 } 192 trace_mhp_acpi_pc_dimm_deleted(mem_st->selector); 193 } 194 break; 195 default: 196 break; 197 } 198 199 } 200 static const MemoryRegionOps acpi_memory_hotplug_ops = { 201 .read = acpi_memory_hotplug_read, 202 .write = acpi_memory_hotplug_write, 203 .endianness = DEVICE_LITTLE_ENDIAN, 204 .valid = { 205 .min_access_size = 1, 206 .max_access_size = 4, 207 }, 208 }; 209 210 void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner, 211 MemHotplugState *state, uint16_t io_base) 212 { 213 MachineState *machine = MACHINE(qdev_get_machine()); 214 215 state->dev_count = machine->ram_slots; 216 if (!state->dev_count) { 217 return; 218 } 219 220 assert(!memhp_io_base); 221 memhp_io_base = io_base; 222 state->devs = g_malloc0(sizeof(*state->devs) * state->dev_count); 223 memory_region_init_io(&state->io, owner, &acpi_memory_hotplug_ops, state, 224 "acpi-mem-hotplug", MEMORY_HOTPLUG_IO_LEN); 225 memory_region_add_subregion(as, memhp_io_base, &state->io); 226 } 227 228 /** 229 * acpi_memory_slot_status: 230 * @mem_st: memory hotplug state 231 * @dev: device 232 * @errp: set in case of an error 233 * 234 * Obtain a single memory slot status. 235 * 236 * This function will be called by memory unplug request cb and unplug cb. 237 */ 238 static MemStatus * 239 acpi_memory_slot_status(MemHotplugState *mem_st, 240 DeviceState *dev, Error **errp) 241 { 242 Error *local_err = NULL; 243 int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, 244 &local_err); 245 246 if (local_err) { 247 error_propagate(errp, local_err); 248 return NULL; 249 } 250 251 if (slot >= mem_st->dev_count) { 252 char *dev_path = object_get_canonical_path(OBJECT(dev)); 253 error_setg(errp, "acpi_memory_slot_status: " 254 "device [%s] returned invalid memory slot[%d]", 255 dev_path, slot); 256 g_free(dev_path); 257 return NULL; 258 } 259 260 return &mem_st->devs[slot]; 261 } 262 263 void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, MemHotplugState *mem_st, 264 DeviceState *dev, Error **errp) 265 { 266 MemStatus *mdev; 267 DeviceClass *dc = DEVICE_GET_CLASS(dev); 268 269 if (!dc->hotpluggable) { 270 return; 271 } 272 273 mdev = acpi_memory_slot_status(mem_st, dev, errp); 274 if (!mdev) { 275 return; 276 } 277 278 mdev->dimm = dev; 279 mdev->is_enabled = true; 280 if (dev->hotplugged) { 281 mdev->is_inserting = true; 282 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS); 283 } 284 } 285 286 void acpi_memory_unplug_request_cb(HotplugHandler *hotplug_dev, 287 MemHotplugState *mem_st, 288 DeviceState *dev, Error **errp) 289 { 290 MemStatus *mdev; 291 292 mdev = acpi_memory_slot_status(mem_st, dev, errp); 293 if (!mdev) { 294 return; 295 } 296 297 mdev->is_removing = true; 298 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS); 299 } 300 301 void acpi_memory_unplug_cb(MemHotplugState *mem_st, 302 DeviceState *dev, Error **errp) 303 { 304 MemStatus *mdev; 305 306 mdev = acpi_memory_slot_status(mem_st, dev, errp); 307 if (!mdev) { 308 return; 309 } 310 311 mdev->is_enabled = false; 312 mdev->dimm = NULL; 313 } 314 315 static const VMStateDescription vmstate_memhp_sts = { 316 .name = "memory hotplug device state", 317 .version_id = 1, 318 .minimum_version_id = 1, 319 .minimum_version_id_old = 1, 320 .fields = (VMStateField[]) { 321 VMSTATE_BOOL(is_enabled, MemStatus), 322 VMSTATE_BOOL(is_inserting, MemStatus), 323 VMSTATE_UINT32(ost_event, MemStatus), 324 VMSTATE_UINT32(ost_status, MemStatus), 325 VMSTATE_END_OF_LIST() 326 } 327 }; 328 329 const VMStateDescription vmstate_memory_hotplug = { 330 .name = "memory hotplug state", 331 .version_id = 1, 332 .minimum_version_id = 1, 333 .minimum_version_id_old = 1, 334 .fields = (VMStateField[]) { 335 VMSTATE_UINT32(selector, MemHotplugState), 336 VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, MemHotplugState, dev_count, 337 vmstate_memhp_sts, MemStatus), 338 VMSTATE_END_OF_LIST() 339 } 340 }; 341 342 void build_memory_hotplug_aml(Aml *table, uint32_t nr_mem, 343 const char *res_root, 344 const char *event_handler_method) 345 { 346 int i; 347 Aml *ifctx; 348 Aml *method; 349 Aml *dev_container; 350 Aml *mem_ctrl_dev; 351 char *mhp_res_path; 352 353 if (!memhp_io_base) { 354 return; 355 } 356 357 mhp_res_path = g_strdup_printf("%s." MEMORY_HOTPLUG_DEVICE, res_root); 358 mem_ctrl_dev = aml_device("%s", mhp_res_path); 359 { 360 Aml *crs; 361 362 aml_append(mem_ctrl_dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 363 aml_append(mem_ctrl_dev, 364 aml_name_decl("_UID", aml_string("Memory hotplug resources"))); 365 366 crs = aml_resource_template(); 367 aml_append(crs, 368 aml_io(AML_DECODE16, memhp_io_base, memhp_io_base, 0, 369 MEMORY_HOTPLUG_IO_LEN) 370 ); 371 aml_append(mem_ctrl_dev, aml_name_decl("_CRS", crs)); 372 373 aml_append(mem_ctrl_dev, aml_operation_region( 374 MEMORY_HOTPLUG_IO_REGION, AML_SYSTEM_IO, 375 aml_int(memhp_io_base), MEMORY_HOTPLUG_IO_LEN) 376 ); 377 378 } 379 aml_append(table, mem_ctrl_dev); 380 381 dev_container = aml_device(MEMORY_DEVICES_CONTAINER); 382 { 383 Aml *field; 384 Aml *one = aml_int(1); 385 Aml *zero = aml_int(0); 386 Aml *ret_val = aml_local(0); 387 Aml *slot_arg0 = aml_arg(0); 388 Aml *slots_nr = aml_name(MEMORY_SLOTS_NUMBER); 389 Aml *ctrl_lock = aml_name(MEMORY_SLOT_LOCK); 390 Aml *slot_selector = aml_name(MEMORY_SLOT_SLECTOR); 391 char *mmio_path = g_strdup_printf("%s." MEMORY_HOTPLUG_IO_REGION, 392 mhp_res_path); 393 394 aml_append(dev_container, aml_name_decl("_HID", aml_string("PNP0A06"))); 395 aml_append(dev_container, 396 aml_name_decl("_UID", aml_string("DIMM devices"))); 397 398 assert(nr_mem <= ACPI_MAX_RAM_SLOTS); 399 aml_append(dev_container, 400 aml_name_decl(MEMORY_SLOTS_NUMBER, aml_int(nr_mem)) 401 ); 402 403 field = aml_field(mmio_path, AML_DWORD_ACC, 404 AML_NOLOCK, AML_PRESERVE); 405 aml_append(field, /* read only */ 406 aml_named_field(MEMORY_SLOT_ADDR_LOW, 32)); 407 aml_append(field, /* read only */ 408 aml_named_field(MEMORY_SLOT_ADDR_HIGH, 32)); 409 aml_append(field, /* read only */ 410 aml_named_field(MEMORY_SLOT_SIZE_LOW, 32)); 411 aml_append(field, /* read only */ 412 aml_named_field(MEMORY_SLOT_SIZE_HIGH, 32)); 413 aml_append(field, /* read only */ 414 aml_named_field(MEMORY_SLOT_PROXIMITY, 32)); 415 aml_append(dev_container, field); 416 417 field = aml_field(mmio_path, AML_BYTE_ACC, 418 AML_NOLOCK, AML_WRITE_AS_ZEROS); 419 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */)); 420 aml_append(field, /* 1 if enabled, read only */ 421 aml_named_field(MEMORY_SLOT_ENABLED, 1)); 422 aml_append(field, 423 /*(read) 1 if has a insert event. (write) 1 to clear event */ 424 aml_named_field(MEMORY_SLOT_INSERT_EVENT, 1)); 425 aml_append(field, 426 /* (read) 1 if has a remove event. (write) 1 to clear event */ 427 aml_named_field(MEMORY_SLOT_REMOVE_EVENT, 1)); 428 aml_append(field, 429 /* initiates device eject, write only */ 430 aml_named_field(MEMORY_SLOT_EJECT, 1)); 431 aml_append(dev_container, field); 432 433 field = aml_field(mmio_path, AML_DWORD_ACC, 434 AML_NOLOCK, AML_PRESERVE); 435 aml_append(field, /* DIMM selector, write only */ 436 aml_named_field(MEMORY_SLOT_SLECTOR, 32)); 437 aml_append(field, /* _OST event code, write only */ 438 aml_named_field(MEMORY_SLOT_OST_EVENT, 32)); 439 aml_append(field, /* _OST status code, write only */ 440 aml_named_field(MEMORY_SLOT_OST_STATUS, 32)); 441 aml_append(dev_container, field); 442 g_free(mmio_path); 443 444 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 445 ifctx = aml_if(aml_equal(slots_nr, zero)); 446 { 447 aml_append(ifctx, aml_return(zero)); 448 } 449 aml_append(method, ifctx); 450 /* present, functioning, decoding, not shown in UI */ 451 aml_append(method, aml_return(aml_int(0xB))); 452 aml_append(dev_container, method); 453 454 aml_append(dev_container, aml_mutex(MEMORY_SLOT_LOCK, 0)); 455 456 method = aml_method(MEMORY_SLOT_SCAN_METHOD, 0, AML_NOTSERIALIZED); 457 { 458 Aml *else_ctx; 459 Aml *while_ctx; 460 Aml *idx = aml_local(0); 461 Aml *eject_req = aml_int(3); 462 Aml *dev_chk = aml_int(1); 463 464 ifctx = aml_if(aml_equal(slots_nr, zero)); 465 { 466 aml_append(ifctx, aml_return(zero)); 467 } 468 aml_append(method, ifctx); 469 470 aml_append(method, aml_store(zero, idx)); 471 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 472 /* build AML that: 473 * loops over all slots and Notifies DIMMs with 474 * Device Check or Eject Request notifications if 475 * slot has corresponding status bit set and clears 476 * slot status. 477 */ 478 while_ctx = aml_while(aml_lless(idx, slots_nr)); 479 { 480 Aml *ins_evt = aml_name(MEMORY_SLOT_INSERT_EVENT); 481 Aml *rm_evt = aml_name(MEMORY_SLOT_REMOVE_EVENT); 482 483 aml_append(while_ctx, aml_store(idx, slot_selector)); 484 ifctx = aml_if(aml_equal(ins_evt, one)); 485 { 486 aml_append(ifctx, 487 aml_call2(MEMORY_SLOT_NOTIFY_METHOD, 488 idx, dev_chk)); 489 aml_append(ifctx, aml_store(one, ins_evt)); 490 } 491 aml_append(while_ctx, ifctx); 492 493 else_ctx = aml_else(); 494 ifctx = aml_if(aml_equal(rm_evt, one)); 495 { 496 aml_append(ifctx, 497 aml_call2(MEMORY_SLOT_NOTIFY_METHOD, 498 idx, eject_req)); 499 aml_append(ifctx, aml_store(one, rm_evt)); 500 } 501 aml_append(else_ctx, ifctx); 502 aml_append(while_ctx, else_ctx); 503 504 aml_append(while_ctx, aml_add(idx, one, idx)); 505 } 506 aml_append(method, while_ctx); 507 aml_append(method, aml_release(ctrl_lock)); 508 aml_append(method, aml_return(one)); 509 } 510 aml_append(dev_container, method); 511 512 method = aml_method(MEMORY_SLOT_STATUS_METHOD, 1, AML_NOTSERIALIZED); 513 { 514 Aml *slot_enabled = aml_name(MEMORY_SLOT_ENABLED); 515 516 aml_append(method, aml_store(zero, ret_val)); 517 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 518 aml_append(method, 519 aml_store(aml_to_integer(slot_arg0), slot_selector)); 520 521 ifctx = aml_if(aml_equal(slot_enabled, one)); 522 { 523 aml_append(ifctx, aml_store(aml_int(0xF), ret_val)); 524 } 525 aml_append(method, ifctx); 526 527 aml_append(method, aml_release(ctrl_lock)); 528 aml_append(method, aml_return(ret_val)); 529 } 530 aml_append(dev_container, method); 531 532 method = aml_method(MEMORY_SLOT_CRS_METHOD, 1, AML_SERIALIZED); 533 { 534 Aml *mr64 = aml_name("MR64"); 535 Aml *mr32 = aml_name("MR32"); 536 Aml *crs_tmpl = aml_resource_template(); 537 Aml *minl = aml_name("MINL"); 538 Aml *minh = aml_name("MINH"); 539 Aml *maxl = aml_name("MAXL"); 540 Aml *maxh = aml_name("MAXH"); 541 Aml *lenl = aml_name("LENL"); 542 Aml *lenh = aml_name("LENH"); 543 544 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 545 aml_append(method, aml_store(aml_to_integer(slot_arg0), 546 slot_selector)); 547 548 aml_append(crs_tmpl, 549 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 550 AML_CACHEABLE, AML_READ_WRITE, 551 0, 0x0, 0xFFFFFFFFFFFFFFFEULL, 0, 552 0xFFFFFFFFFFFFFFFFULL)); 553 aml_append(method, aml_name_decl("MR64", crs_tmpl)); 554 aml_append(method, 555 aml_create_dword_field(mr64, aml_int(14), "MINL")); 556 aml_append(method, 557 aml_create_dword_field(mr64, aml_int(18), "MINH")); 558 aml_append(method, 559 aml_create_dword_field(mr64, aml_int(38), "LENL")); 560 aml_append(method, 561 aml_create_dword_field(mr64, aml_int(42), "LENH")); 562 aml_append(method, 563 aml_create_dword_field(mr64, aml_int(22), "MAXL")); 564 aml_append(method, 565 aml_create_dword_field(mr64, aml_int(26), "MAXH")); 566 567 aml_append(method, 568 aml_store(aml_name(MEMORY_SLOT_ADDR_HIGH), minh)); 569 aml_append(method, 570 aml_store(aml_name(MEMORY_SLOT_ADDR_LOW), minl)); 571 aml_append(method, 572 aml_store(aml_name(MEMORY_SLOT_SIZE_HIGH), lenh)); 573 aml_append(method, 574 aml_store(aml_name(MEMORY_SLOT_SIZE_LOW), lenl)); 575 576 /* 64-bit math: MAX = MIN + LEN - 1 */ 577 aml_append(method, aml_add(minl, lenl, maxl)); 578 aml_append(method, aml_add(minh, lenh, maxh)); 579 ifctx = aml_if(aml_lless(maxl, minl)); 580 { 581 aml_append(ifctx, aml_add(maxh, one, maxh)); 582 } 583 aml_append(method, ifctx); 584 ifctx = aml_if(aml_lless(maxl, one)); 585 { 586 aml_append(ifctx, aml_subtract(maxh, one, maxh)); 587 } 588 aml_append(method, ifctx); 589 aml_append(method, aml_subtract(maxl, one, maxl)); 590 591 /* return 32-bit _CRS if addr/size is in low mem */ 592 /* TODO: remove it since all hotplugged DIMMs are in high mem */ 593 ifctx = aml_if(aml_equal(maxh, zero)); 594 { 595 crs_tmpl = aml_resource_template(); 596 aml_append(crs_tmpl, 597 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, 598 AML_MAX_FIXED, AML_CACHEABLE, 599 AML_READ_WRITE, 600 0, 0x0, 0xFFFFFFFE, 0, 601 0xFFFFFFFF)); 602 aml_append(ifctx, aml_name_decl("MR32", crs_tmpl)); 603 aml_append(ifctx, 604 aml_create_dword_field(mr32, aml_int(10), "MIN")); 605 aml_append(ifctx, 606 aml_create_dword_field(mr32, aml_int(14), "MAX")); 607 aml_append(ifctx, 608 aml_create_dword_field(mr32, aml_int(22), "LEN")); 609 aml_append(ifctx, aml_store(minl, aml_name("MIN"))); 610 aml_append(ifctx, aml_store(maxl, aml_name("MAX"))); 611 aml_append(ifctx, aml_store(lenl, aml_name("LEN"))); 612 613 aml_append(ifctx, aml_release(ctrl_lock)); 614 aml_append(ifctx, aml_return(mr32)); 615 } 616 aml_append(method, ifctx); 617 618 aml_append(method, aml_release(ctrl_lock)); 619 aml_append(method, aml_return(mr64)); 620 } 621 aml_append(dev_container, method); 622 623 method = aml_method(MEMORY_SLOT_PROXIMITY_METHOD, 1, 624 AML_NOTSERIALIZED); 625 { 626 Aml *proximity = aml_name(MEMORY_SLOT_PROXIMITY); 627 628 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 629 aml_append(method, aml_store(aml_to_integer(slot_arg0), 630 slot_selector)); 631 aml_append(method, aml_store(proximity, ret_val)); 632 aml_append(method, aml_release(ctrl_lock)); 633 aml_append(method, aml_return(ret_val)); 634 } 635 aml_append(dev_container, method); 636 637 method = aml_method(MEMORY_SLOT_OST_METHOD, 4, AML_NOTSERIALIZED); 638 { 639 Aml *ost_evt = aml_name(MEMORY_SLOT_OST_EVENT); 640 Aml *ost_status = aml_name(MEMORY_SLOT_OST_STATUS); 641 642 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 643 aml_append(method, aml_store(aml_to_integer(slot_arg0), 644 slot_selector)); 645 aml_append(method, aml_store(aml_arg(1), ost_evt)); 646 aml_append(method, aml_store(aml_arg(2), ost_status)); 647 aml_append(method, aml_release(ctrl_lock)); 648 } 649 aml_append(dev_container, method); 650 651 method = aml_method(MEMORY_SLOT_EJECT_METHOD, 2, AML_NOTSERIALIZED); 652 { 653 Aml *eject = aml_name(MEMORY_SLOT_EJECT); 654 655 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 656 aml_append(method, aml_store(aml_to_integer(slot_arg0), 657 slot_selector)); 658 aml_append(method, aml_store(one, eject)); 659 aml_append(method, aml_release(ctrl_lock)); 660 } 661 aml_append(dev_container, method); 662 663 /* build memory devices */ 664 for (i = 0; i < nr_mem; i++) { 665 Aml *dev; 666 const char *s; 667 668 dev = aml_device("MP%02X", i); 669 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i))); 670 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80"))); 671 672 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 673 s = MEMORY_SLOT_CRS_METHOD; 674 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 675 aml_append(dev, method); 676 677 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 678 s = MEMORY_SLOT_STATUS_METHOD; 679 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 680 aml_append(dev, method); 681 682 method = aml_method("_PXM", 0, AML_NOTSERIALIZED); 683 s = MEMORY_SLOT_PROXIMITY_METHOD; 684 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 685 aml_append(dev, method); 686 687 method = aml_method("_OST", 3, AML_NOTSERIALIZED); 688 s = MEMORY_SLOT_OST_METHOD; 689 aml_append(method, aml_return(aml_call4( 690 s, aml_name("_UID"), aml_arg(0), aml_arg(1), aml_arg(2) 691 ))); 692 aml_append(dev, method); 693 694 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 695 s = MEMORY_SLOT_EJECT_METHOD; 696 aml_append(method, aml_return(aml_call2( 697 s, aml_name("_UID"), aml_arg(0)))); 698 aml_append(dev, method); 699 700 aml_append(dev_container, dev); 701 } 702 703 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) { 704 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... } 705 */ 706 method = aml_method(MEMORY_SLOT_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); 707 for (i = 0; i < nr_mem; i++) { 708 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i))); 709 aml_append(ifctx, 710 aml_notify(aml_name("MP%.02X", i), aml_arg(1)) 711 ); 712 aml_append(method, ifctx); 713 } 714 aml_append(dev_container, method); 715 } 716 aml_append(table, dev_container); 717 718 method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED); 719 aml_append(method, 720 aml_call0(MEMORY_DEVICES_CONTAINER "." MEMORY_SLOT_SCAN_METHOD)); 721 aml_append(table, method); 722 723 g_free(mhp_res_path); 724 } 725