memory_hotplug.c (26685B)
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 info->has_device = true; 48 } 49 } 50 return info; 51 } 52 53 void acpi_memory_ospm_status(MemHotplugState *mem_st, ACPIOSTInfoList ***list) 54 { 55 ACPIOSTInfoList ***tail = list; 56 int i; 57 58 for (i = 0; i < mem_st->dev_count; i++) { 59 QAPI_LIST_APPEND(*tail, 60 acpi_memory_device_status(i, &mem_st->devs[i])); 61 } 62 } 63 64 static uint64_t acpi_memory_hotplug_read(void *opaque, hwaddr addr, 65 unsigned int size) 66 { 67 uint32_t val = 0; 68 MemHotplugState *mem_st = opaque; 69 MemStatus *mdev; 70 Object *o; 71 72 if (mem_st->selector >= mem_st->dev_count) { 73 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 74 return 0; 75 } 76 77 mdev = &mem_st->devs[mem_st->selector]; 78 o = OBJECT(mdev->dimm); 79 switch (addr) { 80 case 0x0: /* Lo part of phys address where DIMM is mapped */ 81 val = o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) : 0; 82 trace_mhp_acpi_read_addr_lo(mem_st->selector, val); 83 break; 84 case 0x4: /* Hi part of phys address where DIMM is mapped */ 85 val = 86 o ? object_property_get_uint(o, PC_DIMM_ADDR_PROP, NULL) >> 32 : 0; 87 trace_mhp_acpi_read_addr_hi(mem_st->selector, val); 88 break; 89 case 0x8: /* Lo part of DIMM size */ 90 val = o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) : 0; 91 trace_mhp_acpi_read_size_lo(mem_st->selector, val); 92 break; 93 case 0xc: /* Hi part of DIMM size */ 94 val = 95 o ? object_property_get_uint(o, PC_DIMM_SIZE_PROP, NULL) >> 32 : 0; 96 trace_mhp_acpi_read_size_hi(mem_st->selector, val); 97 break; 98 case 0x10: /* node proximity for _PXM method */ 99 val = o ? object_property_get_uint(o, PC_DIMM_NODE_PROP, NULL) : 0; 100 trace_mhp_acpi_read_pxm(mem_st->selector, val); 101 break; 102 case 0x14: /* pack and return is_* fields */ 103 val |= mdev->is_enabled ? 1 : 0; 104 val |= mdev->is_inserting ? 2 : 0; 105 val |= mdev->is_removing ? 4 : 0; 106 trace_mhp_acpi_read_flags(mem_st->selector, val); 107 break; 108 default: 109 val = ~0; 110 break; 111 } 112 return val; 113 } 114 115 static void acpi_memory_hotplug_write(void *opaque, hwaddr addr, uint64_t data, 116 unsigned int size) 117 { 118 MemHotplugState *mem_st = opaque; 119 MemStatus *mdev; 120 ACPIOSTInfo *info; 121 DeviceState *dev = NULL; 122 HotplugHandler *hotplug_ctrl = NULL; 123 Error *local_err = NULL; 124 125 if (!mem_st->dev_count) { 126 return; 127 } 128 129 if (addr) { 130 if (mem_st->selector >= mem_st->dev_count) { 131 trace_mhp_acpi_invalid_slot_selected(mem_st->selector); 132 return; 133 } 134 } 135 136 switch (addr) { 137 case 0x0: /* DIMM slot selector */ 138 mem_st->selector = data; 139 trace_mhp_acpi_write_slot(mem_st->selector); 140 break; 141 case 0x4: /* _OST event */ 142 mdev = &mem_st->devs[mem_st->selector]; 143 if (data == 1) { 144 /* TODO: handle device insert OST event */ 145 } else if (data == 3) { 146 /* TODO: handle device remove OST event */ 147 } 148 mdev->ost_event = data; 149 trace_mhp_acpi_write_ost_ev(mem_st->selector, mdev->ost_event); 150 break; 151 case 0x8: /* _OST status */ 152 mdev = &mem_st->devs[mem_st->selector]; 153 mdev->ost_status = data; 154 trace_mhp_acpi_write_ost_status(mem_st->selector, mdev->ost_status); 155 /* TODO: implement memory removal on guest signal */ 156 157 info = acpi_memory_device_status(mem_st->selector, mdev); 158 qapi_event_send_acpi_device_ost(info); 159 qapi_free_ACPIOSTInfo(info); 160 break; 161 case 0x14: /* set is_* fields */ 162 mdev = &mem_st->devs[mem_st->selector]; 163 if (data & 2) { /* clear insert event */ 164 mdev->is_inserting = false; 165 trace_mhp_acpi_clear_insert_evt(mem_st->selector); 166 } else if (data & 4) { 167 mdev->is_removing = false; 168 trace_mhp_acpi_clear_remove_evt(mem_st->selector); 169 } else if (data & 8) { 170 if (!mdev->is_enabled) { 171 trace_mhp_acpi_ejecting_invalid_slot(mem_st->selector); 172 break; 173 } 174 175 dev = DEVICE(mdev->dimm); 176 hotplug_ctrl = qdev_get_hotplug_handler(dev); 177 /* call pc-dimm unplug cb */ 178 hotplug_handler_unplug(hotplug_ctrl, dev, &local_err); 179 if (local_err) { 180 trace_mhp_acpi_pc_dimm_delete_failed(mem_st->selector); 181 182 /* 183 * Send both MEM_UNPLUG_ERROR and DEVICE_UNPLUG_GUEST_ERROR 184 * while the deprecation of MEM_UNPLUG_ERROR is 185 * pending. 186 */ 187 qapi_event_send_mem_unplug_error(dev->id ? : "", 188 error_get_pretty(local_err)); 189 qapi_event_send_device_unplug_guest_error(!!dev->id, dev->id, 190 dev->canonical_path); 191 error_free(local_err); 192 break; 193 } 194 object_unparent(OBJECT(dev)); 195 trace_mhp_acpi_pc_dimm_deleted(mem_st->selector); 196 } 197 break; 198 default: 199 break; 200 } 201 202 } 203 static const MemoryRegionOps acpi_memory_hotplug_ops = { 204 .read = acpi_memory_hotplug_read, 205 .write = acpi_memory_hotplug_write, 206 .endianness = DEVICE_LITTLE_ENDIAN, 207 .valid = { 208 .min_access_size = 1, 209 .max_access_size = 4, 210 }, 211 }; 212 213 void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner, 214 MemHotplugState *state, hwaddr io_base) 215 { 216 MachineState *machine = MACHINE(qdev_get_machine()); 217 218 state->dev_count = machine->ram_slots; 219 if (!state->dev_count) { 220 return; 221 } 222 223 state->devs = g_malloc0(sizeof(*state->devs) * state->dev_count); 224 memory_region_init_io(&state->io, owner, &acpi_memory_hotplug_ops, state, 225 "acpi-mem-hotplug", MEMORY_HOTPLUG_IO_LEN); 226 memory_region_add_subregion(as, io_base, &state->io); 227 } 228 229 /** 230 * acpi_memory_slot_status: 231 * @mem_st: memory hotplug state 232 * @dev: device 233 * @errp: set in case of an error 234 * 235 * Obtain a single memory slot status. 236 * 237 * This function will be called by memory unplug request cb and unplug cb. 238 */ 239 static MemStatus * 240 acpi_memory_slot_status(MemHotplugState *mem_st, 241 DeviceState *dev, Error **errp) 242 { 243 Error *local_err = NULL; 244 int slot = object_property_get_int(OBJECT(dev), PC_DIMM_SLOT_PROP, 245 &local_err); 246 247 if (local_err) { 248 error_propagate(errp, local_err); 249 return NULL; 250 } 251 252 if (slot >= mem_st->dev_count) { 253 char *dev_path = object_get_canonical_path(OBJECT(dev)); 254 error_setg(errp, "acpi_memory_slot_status: " 255 "device [%s] returned invalid memory slot[%d]", 256 dev_path, slot); 257 g_free(dev_path); 258 return NULL; 259 } 260 261 return &mem_st->devs[slot]; 262 } 263 264 void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, MemHotplugState *mem_st, 265 DeviceState *dev, Error **errp) 266 { 267 MemStatus *mdev; 268 DeviceClass *dc = DEVICE_GET_CLASS(dev); 269 270 if (!dc->hotpluggable) { 271 return; 272 } 273 274 mdev = acpi_memory_slot_status(mem_st, dev, errp); 275 if (!mdev) { 276 return; 277 } 278 279 mdev->dimm = dev; 280 mdev->is_enabled = true; 281 if (dev->hotplugged) { 282 mdev->is_inserting = true; 283 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS); 284 } 285 } 286 287 void acpi_memory_unplug_request_cb(HotplugHandler *hotplug_dev, 288 MemHotplugState *mem_st, 289 DeviceState *dev, Error **errp) 290 { 291 MemStatus *mdev; 292 293 mdev = acpi_memory_slot_status(mem_st, dev, errp); 294 if (!mdev) { 295 return; 296 } 297 298 mdev->is_removing = true; 299 acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS); 300 } 301 302 void acpi_memory_unplug_cb(MemHotplugState *mem_st, 303 DeviceState *dev, Error **errp) 304 { 305 MemStatus *mdev; 306 307 mdev = acpi_memory_slot_status(mem_st, dev, errp); 308 if (!mdev) { 309 return; 310 } 311 312 mdev->is_enabled = false; 313 mdev->dimm = NULL; 314 } 315 316 static const VMStateDescription vmstate_memhp_sts = { 317 .name = "memory hotplug device state", 318 .version_id = 1, 319 .minimum_version_id = 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 .fields = (VMStateField[]) { 334 VMSTATE_UINT32(selector, MemHotplugState), 335 VMSTATE_STRUCT_VARRAY_POINTER_UINT32(devs, MemHotplugState, dev_count, 336 vmstate_memhp_sts, MemStatus), 337 VMSTATE_END_OF_LIST() 338 } 339 }; 340 341 void build_memory_hotplug_aml(Aml *table, uint32_t nr_mem, 342 const char *res_root, 343 const char *event_handler_method, 344 AmlRegionSpace rs, hwaddr memhp_io_base) 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 mhp_res_path = g_strdup_printf("%s." MEMORY_HOTPLUG_DEVICE, res_root); 354 mem_ctrl_dev = aml_device("%s", mhp_res_path); 355 { 356 Aml *crs; 357 358 aml_append(mem_ctrl_dev, aml_name_decl("_HID", aml_string("PNP0A06"))); 359 aml_append(mem_ctrl_dev, 360 aml_name_decl("_UID", aml_string("Memory hotplug resources"))); 361 362 crs = aml_resource_template(); 363 if (rs == AML_SYSTEM_IO) { 364 aml_append(crs, 365 aml_io(AML_DECODE16, memhp_io_base, memhp_io_base, 0, 366 MEMORY_HOTPLUG_IO_LEN) 367 ); 368 } else { 369 aml_append(crs, aml_memory32_fixed(memhp_io_base, 370 MEMORY_HOTPLUG_IO_LEN, AML_READ_WRITE)); 371 } 372 aml_append(mem_ctrl_dev, aml_name_decl("_CRS", crs)); 373 374 aml_append(mem_ctrl_dev, aml_operation_region( 375 MEMORY_HOTPLUG_IO_REGION, rs, 376 aml_int(memhp_io_base), MEMORY_HOTPLUG_IO_LEN) 377 ); 378 379 } 380 aml_append(table, mem_ctrl_dev); 381 382 dev_container = aml_device(MEMORY_DEVICES_CONTAINER); 383 { 384 Aml *field; 385 Aml *one = aml_int(1); 386 Aml *zero = aml_int(0); 387 Aml *ret_val = aml_local(0); 388 Aml *slot_arg0 = aml_arg(0); 389 Aml *slots_nr = aml_name(MEMORY_SLOTS_NUMBER); 390 Aml *ctrl_lock = aml_name(MEMORY_SLOT_LOCK); 391 Aml *slot_selector = aml_name(MEMORY_SLOT_SLECTOR); 392 char *mmio_path = g_strdup_printf("%s." MEMORY_HOTPLUG_IO_REGION, 393 mhp_res_path); 394 395 aml_append(dev_container, aml_name_decl("_HID", aml_string("PNP0A06"))); 396 aml_append(dev_container, 397 aml_name_decl("_UID", aml_string("DIMM devices"))); 398 399 assert(nr_mem <= ACPI_MAX_RAM_SLOTS); 400 aml_append(dev_container, 401 aml_name_decl(MEMORY_SLOTS_NUMBER, aml_int(nr_mem)) 402 ); 403 404 field = aml_field(mmio_path, AML_DWORD_ACC, 405 AML_NOLOCK, AML_PRESERVE); 406 aml_append(field, /* read only */ 407 aml_named_field(MEMORY_SLOT_ADDR_LOW, 32)); 408 aml_append(field, /* read only */ 409 aml_named_field(MEMORY_SLOT_ADDR_HIGH, 32)); 410 aml_append(field, /* read only */ 411 aml_named_field(MEMORY_SLOT_SIZE_LOW, 32)); 412 aml_append(field, /* read only */ 413 aml_named_field(MEMORY_SLOT_SIZE_HIGH, 32)); 414 aml_append(field, /* read only */ 415 aml_named_field(MEMORY_SLOT_PROXIMITY, 32)); 416 aml_append(dev_container, field); 417 418 field = aml_field(mmio_path, AML_BYTE_ACC, 419 AML_NOLOCK, AML_WRITE_AS_ZEROS); 420 aml_append(field, aml_reserved_field(160 /* bits, Offset(20) */)); 421 aml_append(field, /* 1 if enabled, read only */ 422 aml_named_field(MEMORY_SLOT_ENABLED, 1)); 423 aml_append(field, 424 /*(read) 1 if has a insert event. (write) 1 to clear event */ 425 aml_named_field(MEMORY_SLOT_INSERT_EVENT, 1)); 426 aml_append(field, 427 /* (read) 1 if has a remove event. (write) 1 to clear event */ 428 aml_named_field(MEMORY_SLOT_REMOVE_EVENT, 1)); 429 aml_append(field, 430 /* initiates device eject, write only */ 431 aml_named_field(MEMORY_SLOT_EJECT, 1)); 432 aml_append(dev_container, field); 433 434 field = aml_field(mmio_path, AML_DWORD_ACC, 435 AML_NOLOCK, AML_PRESERVE); 436 aml_append(field, /* DIMM selector, write only */ 437 aml_named_field(MEMORY_SLOT_SLECTOR, 32)); 438 aml_append(field, /* _OST event code, write only */ 439 aml_named_field(MEMORY_SLOT_OST_EVENT, 32)); 440 aml_append(field, /* _OST status code, write only */ 441 aml_named_field(MEMORY_SLOT_OST_STATUS, 32)); 442 aml_append(dev_container, field); 443 g_free(mmio_path); 444 445 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 446 ifctx = aml_if(aml_equal(slots_nr, zero)); 447 { 448 aml_append(ifctx, aml_return(zero)); 449 } 450 aml_append(method, ifctx); 451 /* present, functioning, decoding, not shown in UI */ 452 aml_append(method, aml_return(aml_int(0xB))); 453 aml_append(dev_container, method); 454 455 aml_append(dev_container, aml_mutex(MEMORY_SLOT_LOCK, 0)); 456 457 method = aml_method(MEMORY_SLOT_SCAN_METHOD, 0, AML_NOTSERIALIZED); 458 { 459 Aml *else_ctx; 460 Aml *while_ctx; 461 Aml *idx = aml_local(0); 462 Aml *eject_req = aml_int(3); 463 Aml *dev_chk = aml_int(1); 464 465 ifctx = aml_if(aml_equal(slots_nr, zero)); 466 { 467 aml_append(ifctx, aml_return(zero)); 468 } 469 aml_append(method, ifctx); 470 471 aml_append(method, aml_store(zero, idx)); 472 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 473 /* build AML that: 474 * loops over all slots and Notifies DIMMs with 475 * Device Check or Eject Request notifications if 476 * slot has corresponding status bit set and clears 477 * slot status. 478 */ 479 while_ctx = aml_while(aml_lless(idx, slots_nr)); 480 { 481 Aml *ins_evt = aml_name(MEMORY_SLOT_INSERT_EVENT); 482 Aml *rm_evt = aml_name(MEMORY_SLOT_REMOVE_EVENT); 483 484 aml_append(while_ctx, aml_store(idx, slot_selector)); 485 ifctx = aml_if(aml_equal(ins_evt, one)); 486 { 487 aml_append(ifctx, 488 aml_call2(MEMORY_SLOT_NOTIFY_METHOD, 489 idx, dev_chk)); 490 aml_append(ifctx, aml_store(one, ins_evt)); 491 } 492 aml_append(while_ctx, ifctx); 493 494 else_ctx = aml_else(); 495 ifctx = aml_if(aml_equal(rm_evt, one)); 496 { 497 aml_append(ifctx, 498 aml_call2(MEMORY_SLOT_NOTIFY_METHOD, 499 idx, eject_req)); 500 aml_append(ifctx, aml_store(one, rm_evt)); 501 } 502 aml_append(else_ctx, ifctx); 503 aml_append(while_ctx, else_ctx); 504 505 aml_append(while_ctx, aml_add(idx, one, idx)); 506 } 507 aml_append(method, while_ctx); 508 aml_append(method, aml_release(ctrl_lock)); 509 aml_append(method, aml_return(one)); 510 } 511 aml_append(dev_container, method); 512 513 method = aml_method(MEMORY_SLOT_STATUS_METHOD, 1, AML_NOTSERIALIZED); 514 { 515 Aml *slot_enabled = aml_name(MEMORY_SLOT_ENABLED); 516 517 aml_append(method, aml_store(zero, ret_val)); 518 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 519 aml_append(method, 520 aml_store(aml_to_integer(slot_arg0), slot_selector)); 521 522 ifctx = aml_if(aml_equal(slot_enabled, one)); 523 { 524 aml_append(ifctx, aml_store(aml_int(0xF), ret_val)); 525 } 526 aml_append(method, ifctx); 527 528 aml_append(method, aml_release(ctrl_lock)); 529 aml_append(method, aml_return(ret_val)); 530 } 531 aml_append(dev_container, method); 532 533 method = aml_method(MEMORY_SLOT_CRS_METHOD, 1, AML_SERIALIZED); 534 { 535 Aml *mr64 = aml_name("MR64"); 536 Aml *mr32 = aml_name("MR32"); 537 Aml *crs_tmpl = aml_resource_template(); 538 Aml *minl = aml_name("MINL"); 539 Aml *minh = aml_name("MINH"); 540 Aml *maxl = aml_name("MAXL"); 541 Aml *maxh = aml_name("MAXH"); 542 Aml *lenl = aml_name("LENL"); 543 Aml *lenh = aml_name("LENH"); 544 545 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 546 aml_append(method, aml_store(aml_to_integer(slot_arg0), 547 slot_selector)); 548 549 aml_append(crs_tmpl, 550 aml_qword_memory(AML_POS_DECODE, AML_MIN_FIXED, AML_MAX_FIXED, 551 AML_CACHEABLE, AML_READ_WRITE, 552 0, 0x0, 0xFFFFFFFFFFFFFFFEULL, 0, 553 0xFFFFFFFFFFFFFFFFULL)); 554 aml_append(method, aml_name_decl("MR64", crs_tmpl)); 555 aml_append(method, 556 aml_create_dword_field(mr64, aml_int(14), "MINL")); 557 aml_append(method, 558 aml_create_dword_field(mr64, aml_int(18), "MINH")); 559 aml_append(method, 560 aml_create_dword_field(mr64, aml_int(38), "LENL")); 561 aml_append(method, 562 aml_create_dword_field(mr64, aml_int(42), "LENH")); 563 aml_append(method, 564 aml_create_dword_field(mr64, aml_int(22), "MAXL")); 565 aml_append(method, 566 aml_create_dword_field(mr64, aml_int(26), "MAXH")); 567 568 aml_append(method, 569 aml_store(aml_name(MEMORY_SLOT_ADDR_HIGH), minh)); 570 aml_append(method, 571 aml_store(aml_name(MEMORY_SLOT_ADDR_LOW), minl)); 572 aml_append(method, 573 aml_store(aml_name(MEMORY_SLOT_SIZE_HIGH), lenh)); 574 aml_append(method, 575 aml_store(aml_name(MEMORY_SLOT_SIZE_LOW), lenl)); 576 577 /* 64-bit math: MAX = MIN + LEN - 1 */ 578 aml_append(method, aml_add(minl, lenl, maxl)); 579 aml_append(method, aml_add(minh, lenh, maxh)); 580 ifctx = aml_if(aml_lless(maxl, minl)); 581 { 582 aml_append(ifctx, aml_add(maxh, one, maxh)); 583 } 584 aml_append(method, ifctx); 585 ifctx = aml_if(aml_lless(maxl, one)); 586 { 587 aml_append(ifctx, aml_subtract(maxh, one, maxh)); 588 } 589 aml_append(method, ifctx); 590 aml_append(method, aml_subtract(maxl, one, maxl)); 591 592 /* return 32-bit _CRS if addr/size is in low mem */ 593 /* TODO: remove it since all hotplugged DIMMs are in high mem */ 594 ifctx = aml_if(aml_equal(maxh, zero)); 595 { 596 crs_tmpl = aml_resource_template(); 597 aml_append(crs_tmpl, 598 aml_dword_memory(AML_POS_DECODE, AML_MIN_FIXED, 599 AML_MAX_FIXED, AML_CACHEABLE, 600 AML_READ_WRITE, 601 0, 0x0, 0xFFFFFFFE, 0, 602 0xFFFFFFFF)); 603 aml_append(ifctx, aml_name_decl("MR32", crs_tmpl)); 604 aml_append(ifctx, 605 aml_create_dword_field(mr32, aml_int(10), "MIN")); 606 aml_append(ifctx, 607 aml_create_dword_field(mr32, aml_int(14), "MAX")); 608 aml_append(ifctx, 609 aml_create_dword_field(mr32, aml_int(22), "LEN")); 610 aml_append(ifctx, aml_store(minl, aml_name("MIN"))); 611 aml_append(ifctx, aml_store(maxl, aml_name("MAX"))); 612 aml_append(ifctx, aml_store(lenl, aml_name("LEN"))); 613 614 aml_append(ifctx, aml_release(ctrl_lock)); 615 aml_append(ifctx, aml_return(mr32)); 616 } 617 aml_append(method, ifctx); 618 619 aml_append(method, aml_release(ctrl_lock)); 620 aml_append(method, aml_return(mr64)); 621 } 622 aml_append(dev_container, method); 623 624 method = aml_method(MEMORY_SLOT_PROXIMITY_METHOD, 1, 625 AML_NOTSERIALIZED); 626 { 627 Aml *proximity = aml_name(MEMORY_SLOT_PROXIMITY); 628 629 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 630 aml_append(method, aml_store(aml_to_integer(slot_arg0), 631 slot_selector)); 632 aml_append(method, aml_store(proximity, ret_val)); 633 aml_append(method, aml_release(ctrl_lock)); 634 aml_append(method, aml_return(ret_val)); 635 } 636 aml_append(dev_container, method); 637 638 method = aml_method(MEMORY_SLOT_OST_METHOD, 4, AML_NOTSERIALIZED); 639 { 640 Aml *ost_evt = aml_name(MEMORY_SLOT_OST_EVENT); 641 Aml *ost_status = aml_name(MEMORY_SLOT_OST_STATUS); 642 643 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 644 aml_append(method, aml_store(aml_to_integer(slot_arg0), 645 slot_selector)); 646 aml_append(method, aml_store(aml_arg(1), ost_evt)); 647 aml_append(method, aml_store(aml_arg(2), ost_status)); 648 aml_append(method, aml_release(ctrl_lock)); 649 } 650 aml_append(dev_container, method); 651 652 method = aml_method(MEMORY_SLOT_EJECT_METHOD, 2, AML_NOTSERIALIZED); 653 { 654 Aml *eject = aml_name(MEMORY_SLOT_EJECT); 655 656 aml_append(method, aml_acquire(ctrl_lock, 0xFFFF)); 657 aml_append(method, aml_store(aml_to_integer(slot_arg0), 658 slot_selector)); 659 aml_append(method, aml_store(one, eject)); 660 aml_append(method, aml_release(ctrl_lock)); 661 } 662 aml_append(dev_container, method); 663 664 /* build memory devices */ 665 for (i = 0; i < nr_mem; i++) { 666 Aml *dev; 667 const char *s; 668 669 dev = aml_device("MP%02X", i); 670 aml_append(dev, aml_name_decl("_UID", aml_string("0x%02X", i))); 671 aml_append(dev, aml_name_decl("_HID", aml_eisaid("PNP0C80"))); 672 673 method = aml_method("_CRS", 0, AML_NOTSERIALIZED); 674 s = MEMORY_SLOT_CRS_METHOD; 675 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 676 aml_append(dev, method); 677 678 method = aml_method("_STA", 0, AML_NOTSERIALIZED); 679 s = MEMORY_SLOT_STATUS_METHOD; 680 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 681 aml_append(dev, method); 682 683 method = aml_method("_PXM", 0, AML_NOTSERIALIZED); 684 s = MEMORY_SLOT_PROXIMITY_METHOD; 685 aml_append(method, aml_return(aml_call1(s, aml_name("_UID")))); 686 aml_append(dev, method); 687 688 method = aml_method("_OST", 3, AML_NOTSERIALIZED); 689 s = MEMORY_SLOT_OST_METHOD; 690 aml_append(method, 691 aml_call4(s, aml_name("_UID"), aml_arg(0), 692 aml_arg(1), aml_arg(2))); 693 aml_append(dev, method); 694 695 method = aml_method("_EJ0", 1, AML_NOTSERIALIZED); 696 s = MEMORY_SLOT_EJECT_METHOD; 697 aml_append(method, 698 aml_call2(s, aml_name("_UID"), aml_arg(0))); 699 aml_append(dev, method); 700 701 aml_append(dev_container, dev); 702 } 703 704 /* build Method(MEMORY_SLOT_NOTIFY_METHOD, 2) { 705 * If (LEqual(Arg0, 0x00)) {Notify(MP00, Arg1)} ... } 706 */ 707 method = aml_method(MEMORY_SLOT_NOTIFY_METHOD, 2, AML_NOTSERIALIZED); 708 for (i = 0; i < nr_mem; i++) { 709 ifctx = aml_if(aml_equal(aml_arg(0), aml_int(i))); 710 aml_append(ifctx, 711 aml_notify(aml_name("MP%.02X", i), aml_arg(1)) 712 ); 713 aml_append(method, ifctx); 714 } 715 aml_append(dev_container, method); 716 } 717 aml_append(table, dev_container); 718 719 if (event_handler_method) { 720 method = aml_method(event_handler_method, 0, AML_NOTSERIALIZED); 721 aml_append(method, aml_call0(MEMORY_DEVICES_CONTAINER "." 722 MEMORY_SLOT_SCAN_METHOD)); 723 aml_append(table, method); 724 } 725 726 g_free(mhp_res_path); 727 }