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-misc.h" 11 12 #define MEMORY_SLOTS_NUMBER "MDNR" 13 #define MEMORY_HOTPLUG_IO_REGION "HPMR" 14 #define MEMORY_SLOT_ADDR_LOW "MRBL" 15 #define MEMORY_SLOT_ADDR_HIGH "MRBH" 16 #define MEMORY_SLOT_SIZE_LOW "MRLL" 17 #define MEMORY_SLOT_SIZE_HIGH "MRLH" 18 #define MEMORY_SLOT_PROXIMITY "MPX" 19 #define MEMORY_SLOT_ENABLED "MES" 20 #define MEMORY_SLOT_INSERT_EVENT "MINS" 21 #define MEMORY_SLOT_REMOVE_EVENT "MRMV" 22 #define MEMORY_SLOT_EJECT "MEJ" 23 #define MEMORY_SLOT_SLECTOR "MSEL" 24 #define MEMORY_SLOT_OST_EVENT "MOEV" 25 #define MEMORY_SLOT_OST_STATUS "MOSC" 26 #define MEMORY_SLOT_LOCK "MLCK" 27 #define MEMORY_SLOT_STATUS_METHOD "MRST" 28 #define MEMORY_SLOT_CRS_METHOD "MCRS" 29 #define MEMORY_SLOT_OST_METHOD "MOST" 30 #define MEMORY_SLOT_PROXIMITY_METHOD "MPXM" 31 #define MEMORY_SLOT_EJECT_METHOD "MEJ0" 32 #define MEMORY_SLOT_NOTIFY_METHOD "MTFY" 33 #define MEMORY_SLOT_SCAN_METHOD "MSCN" 34 #define MEMORY_HOTPLUG_DEVICE "MHPD" 35 #define MEMORY_HOTPLUG_IO_LEN 24 36 #define MEMORY_DEVICES_CONTAINER "\\_SB.MHPC" 37 38 static uint16_t memhp_io_base; 39 40 static ACPIOSTInfo *acpi_memory_device_status(int slot, MemStatus *mdev) 41 { 42 ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1); 43 44 info->slot_type = ACPI_SLOT_TYPE_DIMM; 45 info->slot = g_strdup_printf("%d", slot); 46 info->source = mdev->ost_event; 47 info->status = mdev->ost_status; 48 if (mdev->dimm) { 49 DeviceState *dev = DEVICE(mdev->dimm); 50 if (dev->id) { 51 info->device = g_strdup(dev->id); 52 info->has_device = true; 53 } 54 } 55 return info; 56 } 57 58 void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list) 59 { 60 int i; 61 62 for (i = 0; i < mem_st->dev_count; i++) { 63 ACPIOSTInfoList *elem = g_new0(ACPIOSTInfoList, 1); 64 elem->value = acpi_memory_device_status(i, &mem_st->devs[i]); 65 elem->next = NULL; 66 **list = elem; 67 *list = &elem->next; 68 } 69 } 70 71 static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr, 72 unsigned int size) 73 { 74 uint32_t val = 0; 75 MemHotplugState *mem_st = opaque; 76 MemStatus *mdev; 77 Object *o; 78 79 if (mem_st->selector >= mem_st->dev_count) { 80 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 81 return 0; 82 } 83 84 mdev = &mem_st->devs[mem_st->selector]; 85 o = OBJECT(mdev->dimm); 86 switch (addr) { 87 case 0x0: /* Lo part of phys address where DIMM is mapped */ 88 val = o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) : 0; 89 trace_mhp_acpi_read_addr_lo(mem_st->selector, val); 90 break; 91 case 0x4: /* Hi part of phys address where DIMM is mapped */ 92 val = 93 o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) >> 32 : 0; 94 trace_mhp_acpi_read_addr_hi(mem_st->selector, val); 95 break; 96 case 0x8: /* Lo part of DIMM size */ 97 val = o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) : 0; 98 trace_mhp_acpi_read_size_lo(mem_st->selector, val); 99 break; 100 case 0xc: /* Hi part of DIMM size */ 101 val = 102 o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) >> 32 : 0; 103 trace_mhp_acpi_read_size_hi(mem_st->selector, val); 104 break; 105 case 0x10: /* node proximity for _PXM method */ 106 val = o ? object_property_get_uint(o, PC_DIMM_NODE_PROP, NULL) : 0; 107 trace_mhp_acpi_read_pxm(mem_st->selector, val); 108 break; 109 case 0x14: /* pack and return is_* fields */ 110 val |= mdev->is_enabled ? 1 : 0; 111 val |= mdev->is_inserting ? 2 : 0; 112 val |= mdev->is_removing ? 4 : 0; 113 trace_mhp_acpi_read_flags(mem_st->selector, val); 114 break; 115 default: 116 val = ~0; 117 break; 118 } 119 return val; 120 } 121 122 static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data, 123 unsigned int size) 124 { 125 MemHotplugState *mem_st = opaque; 126 MemStatus *mdev; 127 ACPIOSTInfo *info; 128 DeviceState *dev = NULL; 129 HotplugHandler *hotplug_ctrl = NULL; 130 Error *local_err = NULL; 131 132 if (!mem_st->dev_count) { 133 return; 134 } 135 136 if (addr) { 137 if (mem_st->selector >= mem_st->dev_count) { 138 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 139 return; 140 } 141 } 142 143 switch (addr) { 144 case 0x0: /* DIMM slot selector */ 145 mem_st->selector = data; 146 trace_mhp_acpi_write_slot(mem_st->selector); 147 break; 148 case 0x4: /* _OST event */ 149 mdev = &mem_st->devs[mem_st->selector]; 150 if (data == 1) { 151 /* TODO: handle device insert OST event */ 152 } else if (data == 3) { 153 /* TODO: handle device remove OST event */ 154 } 155 mdev->ost_event = data; 156 trace_mhp_acpi_write_ost_ev(mem_st->selector, mdev->ost_event); 157 break; 158 case 0x8: /* _OST status */ 159 mdev = &mem_st->devs[mem_st->selector]; 160 mdev->ost_status = data; 161 trace_mhp_acpi_write_ost_status(mem_st->selector, mdev->ost_status); 162 /* TODO: implement memory removal on guest signal */ 163 164 info = acpi_memory_device_status(mem_st->selector, mdev); 165 qapi_event_send_acpi_device_ost(info); 166 qapi_free_ACPIOSTInfo(info); 167 break; 168 case 0x14: /* set is_* fields */ 169 mdev = &mem_st->devs[mem_st->selector]; 170 if (data & 2) { /* clear insert event */ 171 mdev->is_inserting = false; 172 trace_mhp_acpi_clear_insert_evt(mem_st->selector); 173 } else if (data & 4) { 174 mdev->is_removing = false; 175 trace_mhp_acpi_clear_remove_evt(mem_st->selector); 176 } else if (data & 8) { 177 if (!mdev->is_enabled) { 178 trace_mhp_acpi_ejecting_invalid_slot(mem_st->selector); 179 break; 180 } 181 182 dev = DEVICE(mdev->dimm); 183 hotplug_ctrl = qdev_get_hotplug_handler(dev); 184 /* call pc-dimm unplug cb */ 185 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err); 186 if (local_err) { 187 trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector); 188 qapi_event_send_mem_unplug_error(dev->id, 189 error_get_pretty(local_err)); 190 error_free(local_err); 191 break; 192 } 193 object_unparent(OBJECT(dev)); 194 trace_mhp_acpi_pc_dimm_deleted(mem_st->selector); 195 } 196 break; 197 default: 198 break; 199 } 200 201 } 202 static const MemoryRegionOps acpi_memory_hotplug_ops = { 203 .read = acpi_memory_hotplug_read, 204 .write = acpi_memory_hotplug_write, 205 .endianness = DEVICE_LITTLE_ENDIAN, 206 .valid = { 207 .min_access_size = 1, 208 .max_access_size = 4, 209 }, 210 }; 211 212 void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner, 213 MemHotplugState *state, uint16_t io_base) 214 { 215 MachineState *machine = MACHINE(qdev_get_machine()); 216 217 state->dev_count = machine->ram_slots; 218 if (!state->dev_count) { 219 return; 220 } 221 222 assert(!memhp_io_base); 223 memhp_io_base = io_base; 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, memhp_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 */ 240 static MemStatus * 241 acpi_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 } 264 265 void 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 } 287 288 void 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 } 302 303 void 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 } 316 317 static 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 }; 330 331 const 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 }; 343 344 void build_memory_hotplug_aml(Aml *table, uint32_t nr_mem, 345 const char *res_root, 346 const char *event_handler_method) 347 { 348 int i; 349 Aml *ifctx; 350 Aml *method; 351 Aml *dev_container; 352 Aml *mem_ctrl_dev; 353 char *mhp_res_path; 354 355 if (!memhp_io_base) { 356 return; 357 } 358 359 mhp_res_path = g_strdup_printf("%s." MEMORY_HOTPLUG_DEVICE, res_root); 360 mem_ctrl_dev = aml_device("%s", mhp_res_path); 361 { 362 Aml *crs; 363 364 aml_append(mem_ctrl_dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 365 aml_append(mem_ctrl_dev, 366 aml_name_decl("_UID", aml_string("Memory hotplug resources"))); 367 368 crs = aml_resource_template(); 369 aml_append(crs, 370 aml_io(AML_DECODE16, memhp_io_base, memhp_io_base, 0, 371 MEMORY_HOTPLUG_IO_LEN) 372 ); 373 aml_append(mem_ctrl_dev, aml_name_decl("_CRS", crs)); 374 375 aml_append(mem_ctrl_dev, aml_operation_region( 376 MEMORY_HOTPLUG_IO_REGION, AML_SYSTEM_IO, 377 aml_int(memhp_io_base), MEMORY_HOTPLUG_IO_LEN) 378 ); 379 380 } 381 aml_append(table, mem_ctrl_dev); 382 383 dev_container = aml_device(MEMORY_DEVICES_CONTAINER); 384 { 385 Aml *field; 386 Aml *one = aml_int(1); 387 Aml *zero = aml_int(0); 388 Aml *ret_val = aml_local(0); 389 Aml *slot_arg0 = aml_arg(0); 390 Aml *slots_nr = aml_name(MEMORY_SLOTS_NUMBER); 391 Aml *ctrl_lock = aml_name(MEMORY_SLOT_LOCK); 392 Aml *slot_selector = aml_name(MEMORY_SLOT_SLECTOR); 393 char *mmio_path = g_strdup_printf("%s." MEMORY_HOTPLUG_IO_REGION, 394 mhp_res_path); 395 396 aml_append(dev_container, aml_name_decl("_HID", aml_string("PNP0A06"))); 397 aml_append(dev_container, 398 aml_name_decl("_UID", aml_string("DIMM devices"))); 399 400 assert(nr_mem <= ACPI_MAX_RAM_SLOTS); 401 aml_append(dev_container, 402 aml_name_decl(MEMORY_SLOTS_NUMBER, aml_int(nr_mem)) 403 ); 404 405 field = aml_field(mmio_path, AML_DWORD_ACC, 406 AML_NOLOCK, AML_PRESERVE); 407 aml_append(field, /* read only */ 408 aml_named_field(MEMORY_SLOT_ADDR_LOW, 32)); 409 aml_append(field, /* read only */ 410 aml_named_field(MEMORY_SLOT_ADDR_HIGH, 32)); 411 aml_append(field, /* read only */ 412 aml_named_field(MEMORY_SLOT_SIZE_LOW, 32)); 413 aml_append(field, /* read only */ 414 aml_named_field(MEMORY_SLOT_SIZE_HIGH, 32)); 415 aml_append(field, /* read only */ 416 aml_named_field(MEMORY_SLOT_PROXIMITY, 32)); 417 aml_append(dev_container, field); 418 419 field = aml_field(mmio_path, AML_BYTE_ACC, 420 AML_NOLOCK, AML_WRITE_AS_ZEROS); 421 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */)); 422 aml_append(field, /* 1 if enabled, read only */ 423 aml_named_field(MEMORY_SLOT_ENABLED, 1)); 424 aml_append(field, 425 /*(read) 1 if has a insert event. (write) 1 to clear event */ 426 aml_named_field(MEMORY_SLOT_INSERT_EVENT, 1)); 427 aml_append(field, 428 /* (read) 1 if has a remove event. (write) 1 to clear event */ 429 aml_named_field(MEMORY_SLOT_REMOVE_EVENT, 1)); 430 aml_append(field, 431 /* initiates device eject, write only */ 432 aml_named_field(MEMORY_SLOT_EJECT, 1)); 433 aml_append(dev_container, field); 434 435 field = aml_field(mmio_path, AML_DWORD_ACC, 436 AML_NOLOCK, AML_PRESERVE); 437 aml_append(field, /* DIMM selector, write only */ 438 aml_named_field(MEMORY_SLOT_SLECTOR, 32)); 439 aml_append(field, /* _OST event code, write only */ 440 aml_named_field(MEMORY_SLOT_OST_EVENT, 32)); 441 aml_append(field, /* _OST status code, write only */ 442 aml_named_field(MEMORY_SLOT_OST_STATUS, 32)); 443 aml_append(dev_container, field); 444 g_free(mmio_path); 445 446 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 447 ifctx = aml_if(aml_equal(slots_nr, zero)); 448 { 449 aml_append(ifctx, aml_return(zero)); 450 } 451 aml_append(method, ifctx); 452 /* present, functioning, decoding, not shown in UI */ 453 aml_append(method, aml_return(aml_int(0xB))); 454 aml_append(dev_container, method); 455 456 aml_append(dev_container, aml_mutex(MEMORY_SLOT_LOCK, 0)); 457 458 method = aml_method(MEMORY_SLOT_SCAN_METHOD, 0, AML_NOTSERIALIZED); 459 { 460 Aml *else_ctx; 461 Aml *while_ctx; 462 Aml *idx = aml_local(0); 463 Aml *eject_req = aml_int(3); 464 Aml *dev_chk = aml_int(1); 465 466 ifctx = aml_if(aml_equal(slots_nr, zero)); 467 { 468 aml_append(ifctx, aml_return(zero)); 469 } 470 aml_append(method, ifctx); 471 472 aml_append(method, aml_store(zero, idx)); 473 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 474 /* build AML that: 475 * loops over all slots and Notifies DIMMs with 476 * Device Check or Eject Request notifications if 477 * slot has corresponding status bit set and clears 478 * slot status. 479 */ 480 while_ctx = aml_while(aml_lless(idx, slots_nr)); 481 { 482 Aml *ins_evt = aml_name(MEMORY_SLOT_INSERT_EVENT); 483 Aml *rm_evt = aml_name(MEMORY_SLOT_REMOVE_EVENT); 484 485 aml_append(while_ctx, aml_store(idx, slot_selector)); 486 ifctx = aml_if(aml_equal(ins_evt, one)); 487 { 488 aml_append(ifctx, 489 aml_call2(MEMORY_SLOT_NOTIFY_METHOD, 490 idx, dev_chk)); 491 aml_append(ifctx, aml_store(one, ins_evt)); 492 } 493 aml_append(while_ctx, ifctx); 494 495 else_ctx = aml_else(); 496 ifctx = aml_if(aml_equal(rm_evt, one)); 497 { 498 aml_append(ifctx, 499 aml_call2(MEMORY_SLOT_NOTIFY_METHOD, 500 idx, eject_req)); 501 aml_append(ifctx, aml_store(one, rm_evt)); 502 } 503 aml_append(else_ctx, ifctx); 504 aml_append(while_ctx, else_ctx); 505 506 aml_append(while_ctx, aml_add(idx, one, idx)); 507 } 508 aml_append(method, while_ctx); 509 aml_append(method, aml_release(ctrl_lock)); 510 aml_append(method, aml_return(one)); 511 } 512 aml_append(dev_container, method); 513 514 method = aml_method(MEMORY_SLOT_STATUS_METHOD, 1, AML_NOTSERIALIZED); 515 { 516 Aml *slot_enabled = aml_name(MEMORY_SLOT_ENABLED); 517 518 aml_append(method, aml_store(zero, ret_val)); 519 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 520 aml_append(method, 521 aml_store(aml_to_integer(slot_arg0), slot_selector)); 522 523 ifctx = aml_if(aml_equal(slot_enabled, one)); 524 { 525 aml_append(ifctx, aml_store(aml_int(0xF), ret_val)); 526 } 527 aml_append(method, ifctx); 528 529 aml_append(method, aml_release(ctrl_lock)); 530 aml_append(method, aml_return(ret_val)); 531 } 532 aml_append(dev_container, method); 533 534 method = aml_method(MEMORY_SLOT_CRS_METHOD, 1, AML_SERIALIZED); 535 { 536 Aml *mr64 = aml_name("MR64"); 537 Aml *mr32 = aml_name("MR32"); 538 Aml *crs_tmpl = aml_resource_template(); 539 Aml *minl = aml_name("MINL"); 540 Aml *minh = aml_name("MINH"); 541 Aml *maxl = aml_name("MAXL"); 542 Aml *maxh = aml_name("MAXH"); 543 Aml *lenl = aml_name("LENL"); 544 Aml *lenh = aml_name("LENH"); 545 546 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 547 aml_append(method, aml_store(aml_to_integer(slot_arg0), 548 slot_selector)); 549 550 aml_append(crs_tmpl, 551 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 552 AML_CACHEABLE, AML_READ_WRITE, 553 0, 0x0, 0xFFFFFFFFFFFFFFFEULL, 0, 554 0xFFFFFFFFFFFFFFFFULL)); 555 aml_append(method, aml_name_decl("MR64", crs_tmpl)); 556 aml_append(method, 557 aml_create_dword_field(mr64, aml_int(14), "MINL")); 558 aml_append(method, 559 aml_create_dword_field(mr64, aml_int(18), "MINH")); 560 aml_append(method, 561 aml_create_dword_field(mr64, aml_int(38), "LENL")); 562 aml_append(method, 563 aml_create_dword_field(mr64, aml_int(42), "LENH")); 564 aml_append(method, 565 aml_create_dword_field(mr64, aml_int(22), "MAXL")); 566 aml_append(method, 567 aml_create_dword_field(mr64, aml_int(26), "MAXH")); 568 569 aml_append(method, 570 aml_store(aml_name(MEMORY_SLOT_ADDR_HIGH), minh)); 571 aml_append(method, 572 aml_store(aml_name(MEMORY_SLOT_ADDR_LOW), minl)); 573 aml_append(method, 574 aml_store(aml_name(MEMORY_SLOT_SIZE_HIGH), lenh)); 575 aml_append(method, 576 aml_store(aml_name(MEMORY_SLOT_SIZE_LOW), lenl)); 577 578 /* 64-bit math: MAX = MIN + LEN - 1 */ 579 aml_append(method, aml_add(minl, lenl, maxl)); 580 aml_append(method, aml_add(minh, lenh, maxh)); 581 ifctx = aml_if(aml_lless(maxl, minl)); 582 { 583 aml_append(ifctx, aml_add(maxh, one, maxh)); 584 } 585 aml_append(method, ifctx); 586 ifctx = aml_if(aml_lless(maxl, one)); 587 { 588 aml_append(ifctx, aml_subtract(maxh, one, maxh)); 589 } 590 aml_append(method, ifctx); 591 aml_append(method, aml_subtract(maxl, one, maxl)); 592 593 /* return 32-bit _CRS if addr/size is in low mem */ 594 /* TODO: remove it since all hotplugged DIMMs are in high mem */ 595 ifctx = aml_if(aml_equal(maxh, zero)); 596 { 597 crs_tmpl = aml_resource_template(); 598 aml_append(crs_tmpl, 599 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, 600 AML_MAX_FIXED, AML_CACHEABLE, 601 AML_READ_WRITE, 602 0, 0x0, 0xFFFFFFFE, 0, 603 0xFFFFFFFF)); 604 aml_append(ifctx, aml_name_decl("MR32", crs_tmpl)); 605 aml_append(ifctx, 606 aml_create_dword_field(mr32, aml_int(10), "MIN")); 607 aml_append(ifctx, 608 aml_create_dword_field(mr32, aml_int(14), "MAX")); 609 aml_append(ifctx, 610 aml_create_dword_field(mr32, aml_int(22), "LEN")); 611 aml_append(ifctx, aml_store(minl, aml_name("MIN"))); 612 aml_append(ifctx, aml_store(maxl, aml_name("MAX"))); 613 aml_append(ifctx, aml_store(lenl, aml_name("LEN"))); 614 615 aml_append(ifctx, aml_release(ctrl_lock)); 616 aml_append(ifctx, aml_return(mr32)); 617 } 618 aml_append(method, ifctx); 619 620 aml_append(method, aml_release(ctrl_lock)); 621 aml_append(method, aml_return(mr64)); 622 } 623 aml_append(dev_container, method); 624 625 method = aml_method(MEMORY_SLOT_PROXIMITY_METHOD, 1, 626 AML_NOTSERIALIZED); 627 { 628 Aml *proximity = aml_name(MEMORY_SLOT_PROXIMITY); 629 630 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 631 aml_append(method, aml_store(aml_to_integer(slot_arg0), 632 slot_selector)); 633 aml_append(method, aml_store(proximity, ret_val)); 634 aml_append(method, aml_release(ctrl_lock)); 635 aml_append(method, aml_return(ret_val)); 636 } 637 aml_append(dev_container, method); 638 639 method = aml_method(MEMORY_SLOT_OST_METHOD, 4, AML_NOTSERIALIZED); 640 { 641 Aml *ost_evt = aml_name(MEMORY_SLOT_OST_EVENT); 642 Aml *ost_status = aml_name(MEMORY_SLOT_OST_STATUS); 643 644 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 645 aml_append(method, aml_store(aml_to_integer(slot_arg0), 646 slot_selector)); 647 aml_append(method, aml_store(aml_arg(1), ost_evt)); 648 aml_append(method, aml_store(aml_arg(2), ost_status)); 649 aml_append(method, aml_release(ctrl_lock)); 650 } 651 aml_append(dev_container, method); 652 653 method = aml_method(MEMORY_SLOT_EJECT_METHOD, 2, AML_NOTSERIALIZED); 654 { 655 Aml *eject = aml_name(MEMORY_SLOT_EJECT); 656 657 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 658 aml_append(method, aml_store(aml_to_integer(slot_arg0), 659 slot_selector)); 660 aml_append(method, aml_store(one, eject)); 661 aml_append(method, aml_release(ctrl_lock)); 662 } 663 aml_append(dev_container, method); 664 665 /* build memory devices */ 666 for (i = 0; i < nr_mem; i++) { 667 Aml *dev; 668 const char *s; 669 670 dev = aml_device("MP%02X", i); 671 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i))); 672 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80"))); 673 674 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 675 s = MEMORY_SLOT_CRS_METHOD; 676 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 677 aml_append(dev, method); 678 679 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 680 s = MEMORY_SLOT_STATUS_METHOD; 681 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 682 aml_append(dev, method); 683 684 method = aml_method("_PXM", 0, AML_NOTSERIALIZED); 685 s = MEMORY_SLOT_PROXIMITY_METHOD; 686 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 687 aml_append(dev, method); 688 689 method = aml_method("_OST", 3, AML_NOTSERIALIZED); 690 s = MEMORY_SLOT_OST_METHOD; 691 aml_append(method, 692 aml_call4(s, aml_name("_UID"), aml_arg(0), 693 aml_arg(1), aml_arg(2))); 694 aml_append(dev, method); 695 696 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 697 s = MEMORY_SLOT_EJECT_METHOD; 698 aml_append(method, 699 aml_call2(s, aml_name("_UID"), aml_arg(0))); 700 aml_append(dev, method); 701 702 aml_append(dev_container, dev); 703 } 704 705 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) { 706 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... } 707 */ 708 method = aml_method(MEMORY_SLOT_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); 709 for (i = 0; i < nr_mem; i++) { 710 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i))); 711 aml_append(ifctx, 712 aml_notify(aml_name("MP%.02X", i), aml_arg(1)) 713 ); 714 aml_append(method, ifctx); 715 } 716 aml_append(dev_container, method); 717 } 718 aml_append(table, dev_container); 719 720 method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED); 721 aml_append(method, 722 aml_call0(MEMORY_DEVICES_CONTAINER "." MEMORY_SLOT_SCAN_METHOD)); 723 aml_append(table, method); 724 725 g_free(mhp_res_path); 726 } 727