1 /* 2 * QEMU PowerPC pSeries Logical Partition (aka sPAPR) hardware System Emulator 3 * 4 * RTAS events handling 5 * 6 * Copyright (c) 2012 David Gibson, IBM Corporation. 7 * 8 * Permission is hereby granted, free of charge, to any person obtaining a copy 9 * of this software and associated documentation files (the "Software"), to deal 10 * in the Software without restriction, including without limitation the rights 11 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell 12 * copies of the Software, and to permit persons to whom the Software is 13 * furnished to do so, subject to the following conditions: 14 * 15 * The above copyright notice and this permission notice shall be included in 16 * all copies or substantial portions of the Software. 17 * 18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 20 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 21 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 22 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 23 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN 24 * THE SOFTWARE. 25 * 26 */ 27 28 #include "qemu/osdep.h" 29 #include "qapi/error.h" 30 #include "sysemu/device_tree.h" 31 #include "sysemu/runstate.h" 32 33 #include "hw/ppc/fdt.h" 34 #include "hw/ppc/spapr.h" 35 #include "hw/ppc/spapr_vio.h" 36 #include "hw/pci/pci.h" 37 #include "hw/irq.h" 38 #include "hw/pci-host/spapr.h" 39 #include "hw/ppc/spapr_drc.h" 40 #include "qemu/help_option.h" 41 #include "qemu/bcd.h" 42 #include "qemu/main-loop.h" 43 #include "hw/ppc/spapr_ovec.h" 44 #include <libfdt.h> 45 #include "migration/blocker.h" 46 47 #define RTAS_LOG_VERSION_MASK 0xff000000 48 #define RTAS_LOG_VERSION_6 0x06000000 49 #define RTAS_LOG_SEVERITY_MASK 0x00e00000 50 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000 51 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000 52 #define RTAS_LOG_SEVERITY_ERROR 0x00800000 53 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000 54 #define RTAS_LOG_SEVERITY_WARNING 0x00400000 55 #define RTAS_LOG_SEVERITY_EVENT 0x00200000 56 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000 57 #define RTAS_LOG_DISPOSITION_MASK 0x00180000 58 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000 59 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000 60 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000 61 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000 62 #define RTAS_LOG_INITIATOR_MASK 0x0000f000 63 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000 64 #define RTAS_LOG_INITIATOR_CPU 0x00001000 65 #define RTAS_LOG_INITIATOR_PCI 0x00002000 66 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000 67 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000 68 #define RTAS_LOG_TARGET_MASK 0x00000f00 69 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000 70 #define RTAS_LOG_TARGET_CPU 0x00000100 71 #define RTAS_LOG_TARGET_PCI 0x00000200 72 #define RTAS_LOG_TARGET_MEMORY 0x00000400 73 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600 74 #define RTAS_LOG_TYPE_MASK 0x000000ff 75 #define RTAS_LOG_TYPE_OTHER 0x00000000 76 #define RTAS_LOG_TYPE_RETRY 0x00000001 77 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002 78 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003 79 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004 80 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005 81 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006 82 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007 83 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008 84 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009 85 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a 86 #define RTAS_LOG_TYPE_EPOW 0x00000040 87 #define RTAS_LOG_TYPE_HOTPLUG 0x000000e5 88 89 struct rtas_error_log { 90 uint32_t summary; 91 uint32_t extended_length; 92 } QEMU_PACKED; 93 94 struct rtas_event_log_v6 { 95 uint8_t b0; 96 #define RTAS_LOG_V6_B0_VALID 0x80 97 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40 98 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20 99 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10 100 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08 101 #define RTAS_LOG_V6_B0_NEW_LOG 0x04 102 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02 103 uint8_t _resv1; 104 uint8_t b2; 105 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80 106 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f 107 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e 108 uint8_t _resv2[9]; 109 uint32_t company; 110 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */ 111 } QEMU_PACKED; 112 113 struct rtas_event_log_v6_section_header { 114 uint16_t section_id; 115 uint16_t section_length; 116 uint8_t section_version; 117 uint8_t section_subtype; 118 uint16_t creator_component_id; 119 } QEMU_PACKED; 120 121 struct rtas_event_log_v6_maina { 122 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */ 123 struct rtas_event_log_v6_section_header hdr; 124 uint32_t creation_date; /* BCD: YYYYMMDD */ 125 uint32_t creation_time; /* BCD: HHMMSS00 */ 126 uint8_t _platform1[8]; 127 char creator_id; 128 uint8_t _resv1[2]; 129 uint8_t section_count; 130 uint8_t _resv2[4]; 131 uint8_t _platform2[8]; 132 uint32_t plid; 133 uint8_t _platform3[4]; 134 } QEMU_PACKED; 135 136 struct rtas_event_log_v6_mainb { 137 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */ 138 struct rtas_event_log_v6_section_header hdr; 139 uint8_t subsystem_id; 140 uint8_t _platform1; 141 uint8_t event_severity; 142 uint8_t event_subtype; 143 uint8_t _platform2[4]; 144 uint8_t _resv1[2]; 145 uint16_t action_flags; 146 uint8_t _resv2[4]; 147 } QEMU_PACKED; 148 149 struct rtas_event_log_v6_epow { 150 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */ 151 struct rtas_event_log_v6_section_header hdr; 152 uint8_t sensor_value; 153 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0 154 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1 155 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2 156 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3 157 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4 158 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5 159 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7 160 uint8_t event_modifier; 161 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1 162 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2 163 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3 164 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4 165 uint8_t extended_modifier; 166 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0 167 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1 168 uint8_t _resv; 169 uint64_t reason_code; 170 } QEMU_PACKED; 171 172 struct epow_extended_log { 173 struct rtas_event_log_v6 v6hdr; 174 struct rtas_event_log_v6_maina maina; 175 struct rtas_event_log_v6_mainb mainb; 176 struct rtas_event_log_v6_epow epow; 177 } QEMU_PACKED; 178 179 union drc_identifier { 180 uint32_t index; 181 uint32_t count; 182 struct { 183 uint32_t count; 184 uint32_t index; 185 } count_indexed; 186 char name[1]; 187 } QEMU_PACKED; 188 189 struct rtas_event_log_v6_hp { 190 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */ 191 struct rtas_event_log_v6_section_header hdr; 192 uint8_t hotplug_type; 193 #define RTAS_LOG_V6_HP_TYPE_CPU 1 194 #define RTAS_LOG_V6_HP_TYPE_MEMORY 2 195 #define RTAS_LOG_V6_HP_TYPE_SLOT 3 196 #define RTAS_LOG_V6_HP_TYPE_PHB 4 197 #define RTAS_LOG_V6_HP_TYPE_PCI 5 198 #define RTAS_LOG_V6_HP_TYPE_PMEM 6 199 uint8_t hotplug_action; 200 #define RTAS_LOG_V6_HP_ACTION_ADD 1 201 #define RTAS_LOG_V6_HP_ACTION_REMOVE 2 202 uint8_t hotplug_identifier; 203 #define RTAS_LOG_V6_HP_ID_DRC_NAME 1 204 #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2 205 #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3 206 #define RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED 4 207 uint8_t reserved; 208 union drc_identifier drc_id; 209 } QEMU_PACKED; 210 211 struct hp_extended_log { 212 struct rtas_event_log_v6 v6hdr; 213 struct rtas_event_log_v6_maina maina; 214 struct rtas_event_log_v6_mainb mainb; 215 struct rtas_event_log_v6_hp hp; 216 } QEMU_PACKED; 217 218 struct rtas_event_log_v6_mc { 219 #define RTAS_LOG_V6_SECTION_ID_MC 0x4D43 /* MC */ 220 struct rtas_event_log_v6_section_header hdr; 221 uint32_t fru_id; 222 uint32_t proc_id; 223 uint8_t error_type; 224 #define RTAS_LOG_V6_MC_TYPE_UE 0 225 #define RTAS_LOG_V6_MC_TYPE_SLB 1 226 #define RTAS_LOG_V6_MC_TYPE_ERAT 2 227 #define RTAS_LOG_V6_MC_TYPE_TLB 4 228 #define RTAS_LOG_V6_MC_TYPE_D_CACHE 5 229 #define RTAS_LOG_V6_MC_TYPE_I_CACHE 7 230 uint8_t sub_err_type; 231 #define RTAS_LOG_V6_MC_UE_INDETERMINATE 0 232 #define RTAS_LOG_V6_MC_UE_IFETCH 1 233 #define RTAS_LOG_V6_MC_UE_PAGE_TABLE_WALK_IFETCH 2 234 #define RTAS_LOG_V6_MC_UE_LOAD_STORE 3 235 #define RTAS_LOG_V6_MC_UE_PAGE_TABLE_WALK_LOAD_STORE 4 236 #define RTAS_LOG_V6_MC_SLB_PARITY 0 237 #define RTAS_LOG_V6_MC_SLB_MULTIHIT 1 238 #define RTAS_LOG_V6_MC_SLB_INDETERMINATE 2 239 #define RTAS_LOG_V6_MC_ERAT_PARITY 1 240 #define RTAS_LOG_V6_MC_ERAT_MULTIHIT 2 241 #define RTAS_LOG_V6_MC_ERAT_INDETERMINATE 3 242 #define RTAS_LOG_V6_MC_TLB_PARITY 1 243 #define RTAS_LOG_V6_MC_TLB_MULTIHIT 2 244 #define RTAS_LOG_V6_MC_TLB_INDETERMINATE 3 245 /* 246 * Per PAPR, 247 * For UE error type, set bit 1 of sub_err_type to indicate effective addr is 248 * provided. For other error types (SLB/ERAT/TLB), set bit 0 to indicate 249 * same. 250 */ 251 #define RTAS_LOG_V6_MC_UE_EA_ADDR_PROVIDED 0x40 252 #define RTAS_LOG_V6_MC_EA_ADDR_PROVIDED 0x80 253 uint8_t reserved_1[6]; 254 uint64_t effective_address; 255 uint64_t logical_address; 256 } QEMU_PACKED; 257 258 struct mc_extended_log { 259 struct rtas_event_log_v6 v6hdr; 260 struct rtas_event_log_v6_mc mc; 261 } QEMU_PACKED; 262 263 struct MC_ierror_table { 264 unsigned long srr1_mask; 265 unsigned long srr1_value; 266 bool nip_valid; /* nip is a valid indicator of faulting address */ 267 uint8_t error_type; 268 uint8_t error_subtype; 269 unsigned int initiator; 270 unsigned int severity; 271 }; 272 273 static const struct MC_ierror_table mc_ierror_table[] = { 274 { 0x00000000081c0000, 0x0000000000040000, true, 275 RTAS_LOG_V6_MC_TYPE_UE, RTAS_LOG_V6_MC_UE_IFETCH, 276 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 277 { 0x00000000081c0000, 0x0000000000080000, true, 278 RTAS_LOG_V6_MC_TYPE_SLB, RTAS_LOG_V6_MC_SLB_PARITY, 279 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 280 { 0x00000000081c0000, 0x00000000000c0000, true, 281 RTAS_LOG_V6_MC_TYPE_SLB, RTAS_LOG_V6_MC_SLB_MULTIHIT, 282 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 283 { 0x00000000081c0000, 0x0000000000100000, true, 284 RTAS_LOG_V6_MC_TYPE_ERAT, RTAS_LOG_V6_MC_ERAT_MULTIHIT, 285 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 286 { 0x00000000081c0000, 0x0000000000140000, true, 287 RTAS_LOG_V6_MC_TYPE_TLB, RTAS_LOG_V6_MC_TLB_MULTIHIT, 288 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 289 { 0x00000000081c0000, 0x0000000000180000, true, 290 RTAS_LOG_V6_MC_TYPE_UE, RTAS_LOG_V6_MC_UE_PAGE_TABLE_WALK_IFETCH, 291 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, } }; 292 293 struct MC_derror_table { 294 unsigned long dsisr_value; 295 bool dar_valid; /* dar is a valid indicator of faulting address */ 296 uint8_t error_type; 297 uint8_t error_subtype; 298 unsigned int initiator; 299 unsigned int severity; 300 }; 301 302 static const struct MC_derror_table mc_derror_table[] = { 303 { 0x00008000, false, 304 RTAS_LOG_V6_MC_TYPE_UE, RTAS_LOG_V6_MC_UE_LOAD_STORE, 305 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 306 { 0x00004000, true, 307 RTAS_LOG_V6_MC_TYPE_UE, RTAS_LOG_V6_MC_UE_PAGE_TABLE_WALK_LOAD_STORE, 308 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 309 { 0x00000800, true, 310 RTAS_LOG_V6_MC_TYPE_ERAT, RTAS_LOG_V6_MC_ERAT_MULTIHIT, 311 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 312 { 0x00000400, true, 313 RTAS_LOG_V6_MC_TYPE_TLB, RTAS_LOG_V6_MC_TLB_MULTIHIT, 314 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 315 { 0x00000080, true, 316 RTAS_LOG_V6_MC_TYPE_SLB, RTAS_LOG_V6_MC_SLB_MULTIHIT, /* Before PARITY */ 317 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 318 { 0x00000100, true, 319 RTAS_LOG_V6_MC_TYPE_SLB, RTAS_LOG_V6_MC_SLB_PARITY, 320 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, } }; 321 322 #define SRR1_MC_LOADSTORE(srr1) ((srr1) & PPC_BIT(42)) 323 324 typedef enum EventClass { 325 EVENT_CLASS_INTERNAL_ERRORS = 0, 326 EVENT_CLASS_EPOW = 1, 327 EVENT_CLASS_RESERVED = 2, 328 EVENT_CLASS_HOT_PLUG = 3, 329 EVENT_CLASS_IO = 4, 330 EVENT_CLASS_MAX 331 } EventClassIndex; 332 #define EVENT_CLASS_MASK(index) (1 << (31 - index)) 333 334 static const char * const event_names[EVENT_CLASS_MAX] = { 335 [EVENT_CLASS_INTERNAL_ERRORS] = "internal-errors", 336 [EVENT_CLASS_EPOW] = "epow-events", 337 [EVENT_CLASS_HOT_PLUG] = "hot-plug-events", 338 [EVENT_CLASS_IO] = "ibm,io-events", 339 }; 340 341 struct SpaprEventSource { 342 int irq; 343 uint32_t mask; 344 bool enabled; 345 }; 346 347 static SpaprEventSource *spapr_event_sources_new(void) 348 { 349 return g_new0(SpaprEventSource, EVENT_CLASS_MAX); 350 } 351 352 static void spapr_event_sources_register(SpaprEventSource *event_sources, 353 EventClassIndex index, int irq) 354 { 355 /* we only support 1 irq per event class at the moment */ 356 g_assert(event_sources); 357 g_assert(!event_sources[index].enabled); 358 event_sources[index].irq = irq; 359 event_sources[index].mask = EVENT_CLASS_MASK(index); 360 event_sources[index].enabled = true; 361 } 362 363 static const SpaprEventSource * 364 spapr_event_sources_get_source(SpaprEventSource *event_sources, 365 EventClassIndex index) 366 { 367 g_assert(index < EVENT_CLASS_MAX); 368 g_assert(event_sources); 369 370 return &event_sources[index]; 371 } 372 373 void spapr_dt_events(SpaprMachineState *spapr, void *fdt) 374 { 375 uint32_t irq_ranges[EVENT_CLASS_MAX * 2]; 376 int i, count = 0, event_sources; 377 SpaprEventSource *events = spapr->event_sources; 378 379 g_assert(events); 380 381 _FDT(event_sources = fdt_add_subnode(fdt, 0, "event-sources")); 382 383 for (i = 0, count = 0; i < EVENT_CLASS_MAX; i++) { 384 int node_offset; 385 uint32_t interrupts[2]; 386 const SpaprEventSource *source = 387 spapr_event_sources_get_source(events, i); 388 const char *source_name = event_names[i]; 389 390 if (!source->enabled) { 391 continue; 392 } 393 394 spapr_dt_irq(interrupts, source->irq, false); 395 396 _FDT(node_offset = fdt_add_subnode(fdt, event_sources, source_name)); 397 _FDT(fdt_setprop(fdt, node_offset, "interrupts", interrupts, 398 sizeof(interrupts))); 399 400 irq_ranges[count++] = interrupts[0]; 401 irq_ranges[count++] = cpu_to_be32(1); 402 } 403 404 _FDT((fdt_setprop(fdt, event_sources, "interrupt-controller", NULL, 0))); 405 _FDT((fdt_setprop_cell(fdt, event_sources, "#interrupt-cells", 2))); 406 _FDT((fdt_setprop(fdt, event_sources, "interrupt-ranges", 407 irq_ranges, count * sizeof(uint32_t)))); 408 } 409 410 static const SpaprEventSource * 411 rtas_event_log_to_source(SpaprMachineState *spapr, int log_type) 412 { 413 const SpaprEventSource *source; 414 415 g_assert(spapr->event_sources); 416 417 switch (log_type) { 418 case RTAS_LOG_TYPE_HOTPLUG: 419 source = spapr_event_sources_get_source(spapr->event_sources, 420 EVENT_CLASS_HOT_PLUG); 421 if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) { 422 g_assert(source->enabled); 423 break; 424 } 425 /* fall through back to epow for legacy hotplug interrupt source */ 426 case RTAS_LOG_TYPE_EPOW: 427 source = spapr_event_sources_get_source(spapr->event_sources, 428 EVENT_CLASS_EPOW); 429 break; 430 default: 431 source = NULL; 432 } 433 434 return source; 435 } 436 437 static int rtas_event_log_to_irq(SpaprMachineState *spapr, int log_type) 438 { 439 const SpaprEventSource *source; 440 441 source = rtas_event_log_to_source(spapr, log_type); 442 g_assert(source); 443 g_assert(source->enabled); 444 445 return source->irq; 446 } 447 448 static uint32_t spapr_event_log_entry_type(SpaprEventLogEntry *entry) 449 { 450 return entry->summary & RTAS_LOG_TYPE_MASK; 451 } 452 453 static void rtas_event_log_queue(SpaprMachineState *spapr, 454 SpaprEventLogEntry *entry) 455 { 456 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); 457 } 458 459 static SpaprEventLogEntry *rtas_event_log_dequeue(SpaprMachineState *spapr, 460 uint32_t event_mask) 461 { 462 SpaprEventLogEntry *entry = NULL; 463 464 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 465 const SpaprEventSource *source = 466 rtas_event_log_to_source(spapr, 467 spapr_event_log_entry_type(entry)); 468 469 g_assert(source); 470 if (source->mask & event_mask) { 471 break; 472 } 473 } 474 475 if (entry) { 476 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 477 } 478 479 return entry; 480 } 481 482 static bool rtas_event_log_contains(SpaprMachineState *spapr, uint32_t event_mask) 483 { 484 SpaprEventLogEntry *entry = NULL; 485 486 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 487 const SpaprEventSource *source = 488 rtas_event_log_to_source(spapr, 489 spapr_event_log_entry_type(entry)); 490 491 if (source->mask & event_mask) { 492 return true; 493 } 494 } 495 496 return false; 497 } 498 499 static uint32_t next_plid; 500 501 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 502 { 503 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 504 | RTAS_LOG_V6_B0_BIGENDIAN; 505 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 506 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 507 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 508 } 509 510 static void spapr_init_maina(SpaprMachineState *spapr, 511 struct rtas_event_log_v6_maina *maina, 512 int section_count) 513 { 514 struct tm tm; 515 int year; 516 517 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 518 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 519 /* FIXME: section version, subtype and creator id? */ 520 spapr_rtc_read(&spapr->rtc, &tm, NULL); 521 year = tm.tm_year + 1900; 522 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 523 | (to_bcd(year % 100) << 16) 524 | (to_bcd(tm.tm_mon + 1) << 8) 525 | to_bcd(tm.tm_mday)); 526 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 527 | (to_bcd(tm.tm_min) << 16) 528 | (to_bcd(tm.tm_sec) << 8)); 529 maina->creator_id = 'H'; /* Hypervisor */ 530 maina->section_count = section_count; 531 maina->plid = next_plid++; 532 } 533 534 static void spapr_powerdown_req(Notifier *n, void *opaque) 535 { 536 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 537 SpaprEventLogEntry *entry; 538 struct rtas_event_log_v6 *v6hdr; 539 struct rtas_event_log_v6_maina *maina; 540 struct rtas_event_log_v6_mainb *mainb; 541 struct rtas_event_log_v6_epow *epow; 542 struct epow_extended_log *new_epow; 543 544 entry = g_new(SpaprEventLogEntry, 1); 545 new_epow = g_malloc0(sizeof(*new_epow)); 546 entry->extended_log = new_epow; 547 548 v6hdr = &new_epow->v6hdr; 549 maina = &new_epow->maina; 550 mainb = &new_epow->mainb; 551 epow = &new_epow->epow; 552 553 entry->summary = RTAS_LOG_VERSION_6 554 | RTAS_LOG_SEVERITY_EVENT 555 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 556 | RTAS_LOG_OPTIONAL_PART_PRESENT 557 | RTAS_LOG_TYPE_EPOW; 558 entry->extended_length = sizeof(*new_epow); 559 560 spapr_init_v6hdr(v6hdr); 561 spapr_init_maina(spapr, maina, 3 /* Main-A, Main-B and EPOW */); 562 563 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 564 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 565 /* FIXME: section version, subtype and creator id? */ 566 mainb->subsystem_id = 0xa0; /* External environment */ 567 mainb->event_severity = 0x00; /* Informational / non-error */ 568 mainb->event_subtype = 0xd0; /* Normal shutdown */ 569 570 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 571 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 572 epow->hdr.section_version = 2; /* includes extended modifier */ 573 /* FIXME: section subtype and creator id? */ 574 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 575 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 576 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 577 578 rtas_event_log_queue(spapr, entry); 579 580 qemu_irq_pulse(spapr_qirq(spapr, 581 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_EPOW))); 582 } 583 584 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, 585 SpaprDrcType drc_type, 586 union drc_identifier *drc_id) 587 { 588 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 589 SpaprEventLogEntry *entry; 590 struct hp_extended_log *new_hp; 591 struct rtas_event_log_v6 *v6hdr; 592 struct rtas_event_log_v6_maina *maina; 593 struct rtas_event_log_v6_mainb *mainb; 594 struct rtas_event_log_v6_hp *hp; 595 596 entry = g_new(SpaprEventLogEntry, 1); 597 new_hp = g_new0(struct hp_extended_log, 1); 598 entry->extended_log = new_hp; 599 600 v6hdr = &new_hp->v6hdr; 601 maina = &new_hp->maina; 602 mainb = &new_hp->mainb; 603 hp = &new_hp->hp; 604 605 entry->summary = RTAS_LOG_VERSION_6 606 | RTAS_LOG_SEVERITY_EVENT 607 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 608 | RTAS_LOG_OPTIONAL_PART_PRESENT 609 | RTAS_LOG_INITIATOR_HOTPLUG 610 | RTAS_LOG_TYPE_HOTPLUG; 611 entry->extended_length = sizeof(*new_hp); 612 613 spapr_init_v6hdr(v6hdr); 614 spapr_init_maina(spapr, maina, 3 /* Main-A, Main-B, HP */); 615 616 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 617 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 618 mainb->subsystem_id = 0x80; /* External environment */ 619 mainb->event_severity = 0x00; /* Informational / non-error */ 620 mainb->event_subtype = 0x00; /* Normal shutdown */ 621 622 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG); 623 hp->hdr.section_length = cpu_to_be16(sizeof(*hp)); 624 hp->hdr.section_version = 1; /* includes extended modifier */ 625 hp->hotplug_action = hp_action; 626 hp->hotplug_identifier = hp_id; 627 628 switch (drc_type) { 629 case SPAPR_DR_CONNECTOR_TYPE_PCI: 630 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; 631 break; 632 case SPAPR_DR_CONNECTOR_TYPE_LMB: 633 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 634 break; 635 case SPAPR_DR_CONNECTOR_TYPE_CPU: 636 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU; 637 break; 638 case SPAPR_DR_CONNECTOR_TYPE_PHB: 639 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PHB; 640 break; 641 case SPAPR_DR_CONNECTOR_TYPE_PMEM: 642 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PMEM; 643 break; 644 default: 645 /* we shouldn't be signaling hotplug events for resources 646 * that don't support them 647 */ 648 g_assert(false); 649 return; 650 } 651 652 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 653 hp->drc_id.count = cpu_to_be32(drc_id->count); 654 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 655 hp->drc_id.index = cpu_to_be32(drc_id->index); 656 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED) { 657 /* we should not be using count_indexed value unless the guest 658 * supports dedicated hotplug event source 659 */ 660 g_assert(spapr_memory_hot_unplug_supported(spapr)); 661 hp->drc_id.count_indexed.count = 662 cpu_to_be32(drc_id->count_indexed.count); 663 hp->drc_id.count_indexed.index = 664 cpu_to_be32(drc_id->count_indexed.index); 665 } 666 667 rtas_event_log_queue(spapr, entry); 668 669 qemu_irq_pulse(spapr_qirq(spapr, 670 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_HOTPLUG))); 671 } 672 673 void spapr_hotplug_req_add_by_index(SpaprDrc *drc) 674 { 675 SpaprDrcType drc_type = spapr_drc_type(drc); 676 union drc_identifier drc_id; 677 678 drc_id.index = spapr_drc_index(drc); 679 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 680 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 681 } 682 683 void spapr_hotplug_req_remove_by_index(SpaprDrc *drc) 684 { 685 SpaprDrcType drc_type = spapr_drc_type(drc); 686 union drc_identifier drc_id; 687 688 drc_id.index = spapr_drc_index(drc); 689 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 690 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 691 } 692 693 void spapr_hotplug_req_add_by_count(SpaprDrcType drc_type, 694 uint32_t count) 695 { 696 union drc_identifier drc_id; 697 698 drc_id.count = count; 699 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 700 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 701 } 702 703 void spapr_hotplug_req_remove_by_count(SpaprDrcType drc_type, 704 uint32_t count) 705 { 706 union drc_identifier drc_id; 707 708 drc_id.count = count; 709 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 710 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 711 } 712 713 void spapr_hotplug_req_add_by_count_indexed(SpaprDrcType drc_type, 714 uint32_t count, uint32_t index) 715 { 716 union drc_identifier drc_id; 717 718 drc_id.count_indexed.count = count; 719 drc_id.count_indexed.index = index; 720 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 721 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 722 } 723 724 void spapr_hotplug_req_remove_by_count_indexed(SpaprDrcType drc_type, 725 uint32_t count, uint32_t index) 726 { 727 union drc_identifier drc_id; 728 729 drc_id.count_indexed.count = count; 730 drc_id.count_indexed.index = index; 731 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 732 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 733 } 734 735 static void spapr_mc_set_ea_provided_flag(struct mc_extended_log *ext_elog) 736 { 737 switch (ext_elog->mc.error_type) { 738 case RTAS_LOG_V6_MC_TYPE_UE: 739 ext_elog->mc.sub_err_type |= RTAS_LOG_V6_MC_UE_EA_ADDR_PROVIDED; 740 break; 741 case RTAS_LOG_V6_MC_TYPE_SLB: 742 case RTAS_LOG_V6_MC_TYPE_ERAT: 743 case RTAS_LOG_V6_MC_TYPE_TLB: 744 ext_elog->mc.sub_err_type |= RTAS_LOG_V6_MC_EA_ADDR_PROVIDED; 745 break; 746 default: 747 break; 748 } 749 } 750 751 static uint32_t spapr_mce_get_elog_type(PowerPCCPU *cpu, bool recovered, 752 struct mc_extended_log *ext_elog) 753 { 754 int i; 755 CPUPPCState *env = &cpu->env; 756 uint32_t summary; 757 uint64_t dsisr = env->spr[SPR_DSISR]; 758 759 summary = RTAS_LOG_VERSION_6 | RTAS_LOG_OPTIONAL_PART_PRESENT; 760 if (recovered) { 761 summary |= RTAS_LOG_DISPOSITION_FULLY_RECOVERED; 762 } else { 763 summary |= RTAS_LOG_DISPOSITION_NOT_RECOVERED; 764 } 765 766 if (SRR1_MC_LOADSTORE(env->spr[SPR_SRR1])) { 767 for (i = 0; i < ARRAY_SIZE(mc_derror_table); i++) { 768 if (!(dsisr & mc_derror_table[i].dsisr_value)) { 769 continue; 770 } 771 772 ext_elog->mc.error_type = mc_derror_table[i].error_type; 773 ext_elog->mc.sub_err_type = mc_derror_table[i].error_subtype; 774 if (mc_derror_table[i].dar_valid) { 775 ext_elog->mc.effective_address = cpu_to_be64(env->spr[SPR_DAR]); 776 spapr_mc_set_ea_provided_flag(ext_elog); 777 } 778 779 summary |= mc_derror_table[i].initiator 780 | mc_derror_table[i].severity; 781 782 return summary; 783 } 784 } else { 785 for (i = 0; i < ARRAY_SIZE(mc_ierror_table); i++) { 786 if ((env->spr[SPR_SRR1] & mc_ierror_table[i].srr1_mask) != 787 mc_ierror_table[i].srr1_value) { 788 continue; 789 } 790 791 ext_elog->mc.error_type = mc_ierror_table[i].error_type; 792 ext_elog->mc.sub_err_type = mc_ierror_table[i].error_subtype; 793 if (mc_ierror_table[i].nip_valid) { 794 ext_elog->mc.effective_address = cpu_to_be64(env->nip); 795 spapr_mc_set_ea_provided_flag(ext_elog); 796 } 797 798 summary |= mc_ierror_table[i].initiator 799 | mc_ierror_table[i].severity; 800 801 return summary; 802 } 803 } 804 805 summary |= RTAS_LOG_INITIATOR_CPU; 806 return summary; 807 } 808 809 static void spapr_mce_dispatch_elog(SpaprMachineState *spapr, PowerPCCPU *cpu, 810 bool recovered) 811 { 812 CPUState *cs = CPU(cpu); 813 CPUPPCState *env = &cpu->env; 814 uint64_t rtas_addr; 815 struct rtas_error_log log; 816 struct mc_extended_log *ext_elog; 817 uint32_t summary; 818 819 ext_elog = g_malloc0(sizeof(*ext_elog)); 820 summary = spapr_mce_get_elog_type(cpu, recovered, ext_elog); 821 822 log.summary = cpu_to_be32(summary); 823 log.extended_length = cpu_to_be32(sizeof(*ext_elog)); 824 825 spapr_init_v6hdr(&ext_elog->v6hdr); 826 ext_elog->mc.hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MC); 827 ext_elog->mc.hdr.section_length = 828 cpu_to_be16(sizeof(struct rtas_event_log_v6_mc)); 829 ext_elog->mc.hdr.section_version = 1; 830 831 /* get rtas addr from fdt */ 832 rtas_addr = spapr_get_rtas_addr(); 833 if (!rtas_addr) { 834 if (!recovered) { 835 error_report( 836 "FWNMI: Unable to deliver machine check to guest: rtas_addr not found."); 837 qemu_system_guest_panicked(NULL); 838 } else { 839 warn_report( 840 "FWNMI: Unable to deliver machine check to guest: rtas_addr not found. " 841 "Machine check recovered."); 842 } 843 g_free(ext_elog); 844 return; 845 } 846 847 /* 848 * By taking the interlock, we assume that the MCE will be 849 * delivered to the guest. CAUTION: don't add anything that could 850 * prevent the MCE to be delivered after this line, otherwise the 851 * guest won't be able to release the interlock and ultimately 852 * hang/crash? 853 */ 854 spapr->fwnmi_machine_check_interlock = cpu->vcpu_id; 855 856 stq_be_phys(&address_space_memory, rtas_addr + RTAS_ERROR_LOG_OFFSET, 857 env->gpr[3]); 858 cpu_physical_memory_write(rtas_addr + RTAS_ERROR_LOG_OFFSET + 859 sizeof(env->gpr[3]), &log, sizeof(log)); 860 cpu_physical_memory_write(rtas_addr + RTAS_ERROR_LOG_OFFSET + 861 sizeof(env->gpr[3]) + sizeof(log), ext_elog, 862 sizeof(*ext_elog)); 863 g_free(ext_elog); 864 865 env->gpr[3] = rtas_addr + RTAS_ERROR_LOG_OFFSET; 866 867 ppc_cpu_do_fwnmi_machine_check(cs, spapr->fwnmi_machine_check_addr); 868 } 869 870 void spapr_mce_req_event(PowerPCCPU *cpu, bool recovered) 871 { 872 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 873 CPUState *cs = CPU(cpu); 874 int ret; 875 876 if (spapr->fwnmi_machine_check_addr == -1) { 877 /* Non-FWNMI case, deliver it like an architected CPU interrupt. */ 878 cs->exception_index = POWERPC_EXCP_MCHECK; 879 ppc_cpu_do_interrupt(cs); 880 return; 881 } 882 883 /* Wait for FWNMI interlock. */ 884 while (spapr->fwnmi_machine_check_interlock != -1) { 885 /* 886 * Check whether the same CPU got machine check error 887 * while still handling the mc error (i.e., before 888 * that CPU called "ibm,nmi-interlock") 889 */ 890 if (spapr->fwnmi_machine_check_interlock == cpu->vcpu_id) { 891 if (!recovered) { 892 error_report( 893 "FWNMI: Unable to deliver machine check to guest: nested machine check."); 894 qemu_system_guest_panicked(NULL); 895 } else { 896 warn_report( 897 "FWNMI: Unable to deliver machine check to guest: nested machine check. " 898 "Machine check recovered."); 899 } 900 return; 901 } 902 qemu_cond_wait_bql(&spapr->fwnmi_machine_check_interlock_cond); 903 if (spapr->fwnmi_machine_check_addr == -1) { 904 /* 905 * If the machine was reset while waiting for the interlock, 906 * abort the delivery. The machine check applies to a context 907 * that no longer exists, so it wouldn't make sense to deliver 908 * it now. 909 */ 910 return; 911 } 912 } 913 914 /* 915 * Try to block migration while FWNMI is being handled, so the 916 * machine check handler runs where the information passed to it 917 * actually makes sense. This shouldn't actually block migration, 918 * only delay it slightly, assuming migration is retried. If the 919 * attempt to block fails, carry on. Unfortunately, it always 920 * fails when running with -only-migrate. A proper interface to 921 * delay migration completion for a bit could avoid that. 922 */ 923 error_setg(&spapr->fwnmi_migration_blocker, 924 "A machine check is being handled during migration. The handler" 925 "may run and log hardware error on the destination"); 926 927 ret = migrate_add_blocker(&spapr->fwnmi_migration_blocker, NULL); 928 if (ret == -EBUSY) { 929 warn_report("Received a fwnmi while migration was in progress"); 930 } 931 932 spapr_mce_dispatch_elog(spapr, cpu, recovered); 933 } 934 935 static void check_exception(PowerPCCPU *cpu, SpaprMachineState *spapr, 936 uint32_t token, uint32_t nargs, 937 target_ulong args, 938 uint32_t nret, target_ulong rets) 939 { 940 uint32_t mask, buf, len, event_len; 941 SpaprEventLogEntry *event; 942 struct rtas_error_log header; 943 int i; 944 945 if ((nargs < 6) || (nargs > 7) || nret != 1) { 946 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 947 return; 948 } 949 950 mask = rtas_ld(args, 2); 951 buf = rtas_ld(args, 4); 952 len = rtas_ld(args, 5); 953 954 event = rtas_event_log_dequeue(spapr, mask); 955 if (!event) { 956 goto out_no_events; 957 } 958 959 event_len = event->extended_length + sizeof(header); 960 961 if (event_len < len) { 962 len = event_len; 963 } 964 965 header.summary = cpu_to_be32(event->summary); 966 header.extended_length = cpu_to_be32(event->extended_length); 967 cpu_physical_memory_write(buf, &header, sizeof(header)); 968 cpu_physical_memory_write(buf + sizeof(header), event->extended_log, 969 event->extended_length); 970 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 971 g_free(event->extended_log); 972 g_free(event); 973 974 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 975 * there are still pending events to be fetched via check-exception. We 976 * do the latter here, since our code relies on edge-triggered 977 * interrupts. 978 */ 979 for (i = 0; i < EVENT_CLASS_MAX; i++) { 980 if (rtas_event_log_contains(spapr, EVENT_CLASS_MASK(i))) { 981 const SpaprEventSource *source = 982 spapr_event_sources_get_source(spapr->event_sources, i); 983 984 g_assert(source->enabled); 985 qemu_irq_pulse(spapr_qirq(spapr, source->irq)); 986 } 987 } 988 989 return; 990 991 out_no_events: 992 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 993 } 994 995 static void event_scan(PowerPCCPU *cpu, SpaprMachineState *spapr, 996 uint32_t token, uint32_t nargs, 997 target_ulong args, 998 uint32_t nret, target_ulong rets) 999 { 1000 int i; 1001 if (nargs != 4 || nret != 1) { 1002 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 1003 return; 1004 } 1005 1006 for (i = 0; i < EVENT_CLASS_MAX; i++) { 1007 if (rtas_event_log_contains(spapr, EVENT_CLASS_MASK(i))) { 1008 const SpaprEventSource *source = 1009 spapr_event_sources_get_source(spapr->event_sources, i); 1010 1011 g_assert(source->enabled); 1012 qemu_irq_pulse(spapr_qirq(spapr, source->irq)); 1013 } 1014 } 1015 1016 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 1017 } 1018 1019 void spapr_clear_pending_events(SpaprMachineState *spapr) 1020 { 1021 SpaprEventLogEntry *entry = NULL, *next_entry; 1022 1023 QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) { 1024 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 1025 g_free(entry->extended_log); 1026 g_free(entry); 1027 } 1028 } 1029 1030 void spapr_clear_pending_hotplug_events(SpaprMachineState *spapr) 1031 { 1032 SpaprEventLogEntry *entry = NULL, *next_entry; 1033 1034 QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) { 1035 if (spapr_event_log_entry_type(entry) == RTAS_LOG_TYPE_HOTPLUG) { 1036 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 1037 g_free(entry->extended_log); 1038 g_free(entry); 1039 } 1040 } 1041 } 1042 1043 void spapr_events_init(SpaprMachineState *spapr) 1044 { 1045 int epow_irq = SPAPR_IRQ_EPOW; 1046 1047 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 1048 epow_irq = spapr_irq_findone(spapr, &error_fatal); 1049 } 1050 1051 spapr_irq_claim(spapr, epow_irq, false, &error_fatal); 1052 1053 QTAILQ_INIT(&spapr->pending_events); 1054 1055 spapr->event_sources = spapr_event_sources_new(); 1056 1057 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW, 1058 epow_irq); 1059 1060 /* NOTE: if machine supports modern/dedicated hotplug event source, 1061 * we add it to the device-tree unconditionally. This means we may 1062 * have cases where the source is enabled in QEMU, but unused by the 1063 * guest because it does not support modern hotplug events, so we 1064 * take care to rely on checking for negotiation of OV5_HP_EVT option 1065 * before attempting to use it to signal events, rather than simply 1066 * checking that it's enabled. 1067 */ 1068 if (spapr->use_hotplug_event_source) { 1069 int hp_irq = SPAPR_IRQ_HOTPLUG; 1070 1071 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 1072 hp_irq = spapr_irq_findone(spapr, &error_fatal); 1073 } 1074 1075 spapr_irq_claim(spapr, hp_irq, false, &error_fatal); 1076 1077 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG, 1078 hp_irq); 1079 } 1080 1081 spapr->epow_notifier.notify = spapr_powerdown_req; 1082 qemu_register_powerdown_notifier(&spapr->epow_notifier); 1083 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 1084 check_exception); 1085 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 1086 } 1087