1 #include "qemu/osdep.h" 2 #include "hw/acpi/memory_hotplug.h" 3 #include "hw/mem/pc-dimm.h" 4 #include "hw/qdev-core.h" 5 #include "migration/vmstate.h" 6 #include "trace.h" 7 #include "qapi/error.h" 8 #include "qapi/qapi-events-acpi.h" 9 #include "qapi/qapi-events-machine.h" 10 #include "qapi/qapi-events-qdev.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_HOTPLUG_DEVICE "MHPD" 34 35 static ACPIOSTInfo *acpi_memory_device_status(int slot, MemStatus *mdev) 36 { 37 ACPIOSTInfo *info = g_new0(ACPIOSTInfo, 1); 38 39 info->slot_type = ACPI_SLOT_TYPE_DIMM; 40 info->slot = g_strdup_printf("%d", slot); 41 info->source = mdev->ost_event; 42 info->status = mdev->ost_status; 43 if (mdev->dimm) { 44 DeviceState *dev = DEVICE(mdev->dimm); 45 if (dev->id) { 46 info->device = g_strdup(dev->id); 47 } 48 } 49 return info; 50 } 51 52 void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list) 53 { 54 ACPIOSTInfoList ***tail = list; 55 int i; 56 57 for (i = 0; i < mem_st->dev_count; i++) { 58 QAPI_LIST_APPEND(*tail, 59 acpi_memory_device_status(i, &mem_st->devs[i])); 60 } 61 } 62 63 static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr, 64 unsigned int size) 65 { 66 uint32_t val = 0; 67 MemHotplugState *mem_st = opaque; 68 MemStatus *mdev; 69 Object *o; 70 71 if (mem_st->selector >= mem_st->dev_count) { 72 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 73 return 0; 74 } 75 76 mdev = &mem_st->devs[mem_st->selector]; 77 o = OBJECT(mdev->dimm); 78 switch (addr) { 79 case 0x0: /* Lo part of phys address where DIMM is mapped */ 80 val = o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) : 0; 81 trace_mhp_acpi_read_addr_lo(mem_st->selector, val); 82 break; 83 case 0x4: /* Hi part of phys address where DIMM is mapped */ 84 val = 85 o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) >> 32 : 0; 86 trace_mhp_acpi_read_addr_hi(mem_st->selector, val); 87 break; 88 case 0x8: /* Lo part of DIMM size */ 89 val = o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) : 0; 90 trace_mhp_acpi_read_size_lo(mem_st->selector, val); 91 break; 92 case 0xc: /* Hi part of DIMM size */ 93 val = 94 o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) >> 32 : 0; 95 trace_mhp_acpi_read_size_hi(mem_st->selector, val); 96 break; 97 case 0x10: /* node proximity for _PXM method */ 98 val = o ? object_property_get_uint(o, PC_DIMM_NODE_PROP, NULL) : 0; 99 trace_mhp_acpi_read_pxm(mem_st->selector, val); 100 break; 101 case 0x14: /* pack and return is_* fields */ 102 val |= mdev->is_enabled ? 1 : 0; 103 val |= mdev->is_inserting ? 2 : 0; 104 val |= mdev->is_removing ? 4 : 0; 105 trace_mhp_acpi_read_flags(mem_st->selector, val); 106 break; 107 default: 108 val = ~0; 109 break; 110 } 111 return val; 112 } 113 114 static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data, 115 unsigned int size) 116 { 117 MemHotplugState *mem_st = opaque; 118 MemStatus *mdev; 119 ACPIOSTInfo *info; 120 DeviceState *dev = NULL; 121 HotplugHandler *hotplug_ctrl = NULL; 122 Error *local_err = NULL; 123 124 if (!mem_st->dev_count) { 125 return; 126 } 127 128 if (addr) { 129 if (mem_st->selector >= mem_st->dev_count) { 130 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 131 return; 132 } 133 } 134 135 switch (addr) { 136 case 0x0: /* DIMM slot selector */ 137 mem_st->selector = data; 138 trace_mhp_acpi_write_slot(mem_st->selector); 139 break; 140 case 0x4: /* _OST event */ 141 mdev = &mem_st->devs[mem_st->selector]; 142 if (data == 1) { 143 /* TODO: handle device insert OST event */ 144 } else if (data == 3) { 145 /* TODO: handle device remove OST event */ 146 } 147 mdev->ost_event = data; 148 trace_mhp_acpi_write_ost_ev(mem_st->selector, mdev->ost_event); 149 break; 150 case 0x8: /* _OST status */ 151 mdev = &mem_st->devs[mem_st->selector]; 152 mdev->ost_status = data; 153 trace_mhp_acpi_write_ost_status(mem_st->selector, mdev->ost_status); 154 /* TODO: implement memory removal on guest signal */ 155 156 info = acpi_memory_device_status(mem_st->selector, mdev); 157 qapi_event_send_acpi_device_ost(info); 158 qapi_free_ACPIOSTInfo(info); 159 break; 160 case 0x14: /* set is_* fields */ 161 mdev = &mem_st->devs[mem_st->selector]; 162 if (data & 2) { /* clear insert event */ 163 mdev->is_inserting = false; 164 trace_mhp_acpi_clear_insert_evt(mem_st->selector); 165 } else if (data & 4) { 166 mdev->is_removing = false; 167 trace_mhp_acpi_clear_remove_evt(mem_st->selector); 168 } else if (data & 8) { 169 if (!mdev->is_enabled) { 170 trace_mhp_acpi_ejecting_invalid_slot(mem_st->selector); 171 break; 172 } 173 174 dev = DEVICE(mdev->dimm); 175 hotplug_ctrl = qdev_get_hotplug_handler(dev); 176 /* call pc-dimm unplug cb */ 177 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err); 178 if (local_err) { 179 trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector); 180 181 /* 182 * Send both MEM_UNPLUG_ERROR and DEVICE_UNPLUG_GUEST_ERROR 183 * while the deprecation of MEM_UNPLUG_ERROR is 184 * pending. 185 */ 186 qapi_event_send_mem_unplug_error(dev->id ? : "", 187 error_get_pretty(local_err)); 188 qapi_event_send_device_unplug_guest_error(dev->id, 189 dev->canonical_path); 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, hwaddr 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 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, 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 .fields = (VMStateField[]) { 320 VMSTATE_BOOL(is_enabled, MemStatus), 321 VMSTATE_BOOL(is_inserting, MemStatus), 322 VMSTATE_UINT32(ost_event, MemStatus), 323 VMSTATE_UINT32(ost_status, MemStatus), 324 VMSTATE_END_OF_LIST() 325 } 326 }; 327 328 const VMStateDescription vmstate_memory_hotplug = { 329 .name = "memory hotplug state", 330 .version_id = 1, 331 .minimum_version_id = 1, 332 .fields = (VMStateField[]) { 333 VMSTATE_UINT32(selector, MemHotplugState), 334 VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, MemHotplugState, dev_count, 335 vmstate_memhp_sts, MemStatus), 336 VMSTATE_END_OF_LIST() 337 } 338 }; 339 340 void build_memory_hotplug_aml(Aml *table, uint32_t nr_mem, 341 const char *res_root, 342 const char *event_handler_method, 343 AmlRegionSpace rs, hwaddr memhp_io_base) 344 { 345 int i; 346 Aml *ifctx; 347 Aml *method; 348 Aml *dev_container; 349 Aml *mem_ctrl_dev; 350 char *mhp_res_path; 351 352 mhp_res_path = g_strdup_printf("%s." MEMORY_HOTPLUG_DEVICE, res_root); 353 mem_ctrl_dev = aml_device("%s", mhp_res_path); 354 { 355 Aml *crs; 356 357 aml_append(mem_ctrl_dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 358 aml_append(mem_ctrl_dev, 359 aml_name_decl("_UID", aml_string("Memory hotplug resources"))); 360 361 crs = aml_resource_template(); 362 if (rs == AML_SYSTEM_IO) { 363 aml_append(crs, 364 aml_io(AML_DECODE16, memhp_io_base, memhp_io_base, 0, 365 MEMORY_HOTPLUG_IO_LEN) 366 ); 367 } else { 368 aml_append(crs, aml_memory32_fixed(memhp_io_base, 369 MEMORY_HOTPLUG_IO_LEN, AML_READ_WRITE)); 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, rs, 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, 690 aml_call4(s, aml_name("_UID"), aml_arg(0), 691 aml_arg(1), aml_arg(2))); 692 aml_append(dev, method); 693 694 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 695 s = MEMORY_SLOT_EJECT_METHOD; 696 aml_append(method, 697 aml_call2(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 if (event_handler_method) { 719 method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED); 720 aml_append(method, aml_call0(MEMORY_DEVICES_CONTAINER "." 721 MEMORY_SLOT_SCAN_METHOD)); 722 aml_append(table, method); 723 } 724 725 g_free(mhp_res_path); 726 } 727