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