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 "cpu.h" 31 #include "sysemu/device_tree.h" 32 #include "sysemu/runstate.h" 33 34 #include "hw/ppc/fdt.h" 35 #include "hw/ppc/spapr.h" 36 #include "hw/ppc/spapr_vio.h" 37 #include "hw/pci/pci.h" 38 #include "hw/irq.h" 39 #include "hw/pci-host/spapr.h" 40 #include "hw/ppc/spapr_drc.h" 41 #include "qemu/help_option.h" 42 #include "qemu/bcd.h" 43 #include "qemu/main-loop.h" 44 #include "hw/ppc/spapr_ovec.h" 45 #include <libfdt.h> 46 #include "migration/blocker.h" 47 48 #define RTAS_LOG_VERSION_MASK 0xff000000 49 #define RTAS_LOG_VERSION_6 0x06000000 50 #define RTAS_LOG_SEVERITY_MASK 0x00e00000 51 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000 52 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000 53 #define RTAS_LOG_SEVERITY_ERROR 0x00800000 54 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000 55 #define RTAS_LOG_SEVERITY_WARNING 0x00400000 56 #define RTAS_LOG_SEVERITY_EVENT 0x00200000 57 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000 58 #define RTAS_LOG_DISPOSITION_MASK 0x00180000 59 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000 60 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000 61 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000 62 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000 63 #define RTAS_LOG_INITIATOR_MASK 0x0000f000 64 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000 65 #define RTAS_LOG_INITIATOR_CPU 0x00001000 66 #define RTAS_LOG_INITIATOR_PCI 0x00002000 67 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000 68 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000 69 #define RTAS_LOG_TARGET_MASK 0x00000f00 70 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000 71 #define RTAS_LOG_TARGET_CPU 0x00000100 72 #define RTAS_LOG_TARGET_PCI 0x00000200 73 #define RTAS_LOG_TARGET_MEMORY 0x00000400 74 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600 75 #define RTAS_LOG_TYPE_MASK 0x000000ff 76 #define RTAS_LOG_TYPE_OTHER 0x00000000 77 #define RTAS_LOG_TYPE_RETRY 0x00000001 78 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002 79 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003 80 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004 81 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005 82 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006 83 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007 84 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008 85 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009 86 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a 87 #define RTAS_LOG_TYPE_EPOW 0x00000040 88 #define RTAS_LOG_TYPE_HOTPLUG 0x000000e5 89 90 struct rtas_error_log { 91 uint32_t summary; 92 uint32_t extended_length; 93 } QEMU_PACKED; 94 95 struct rtas_event_log_v6 { 96 uint8_t b0; 97 #define RTAS_LOG_V6_B0_VALID 0x80 98 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40 99 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20 100 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10 101 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08 102 #define RTAS_LOG_V6_B0_NEW_LOG 0x04 103 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02 104 uint8_t _resv1; 105 uint8_t b2; 106 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80 107 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f 108 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e 109 uint8_t _resv2[9]; 110 uint32_t company; 111 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */ 112 } QEMU_PACKED; 113 114 struct rtas_event_log_v6_section_header { 115 uint16_t section_id; 116 uint16_t section_length; 117 uint8_t section_version; 118 uint8_t section_subtype; 119 uint16_t creator_component_id; 120 } QEMU_PACKED; 121 122 struct rtas_event_log_v6_maina { 123 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */ 124 struct rtas_event_log_v6_section_header hdr; 125 uint32_t creation_date; /* BCD: YYYYMMDD */ 126 uint32_t creation_time; /* BCD: HHMMSS00 */ 127 uint8_t _platform1[8]; 128 char creator_id; 129 uint8_t _resv1[2]; 130 uint8_t section_count; 131 uint8_t _resv2[4]; 132 uint8_t _platform2[8]; 133 uint32_t plid; 134 uint8_t _platform3[4]; 135 } QEMU_PACKED; 136 137 struct rtas_event_log_v6_mainb { 138 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */ 139 struct rtas_event_log_v6_section_header hdr; 140 uint8_t subsystem_id; 141 uint8_t _platform1; 142 uint8_t event_severity; 143 uint8_t event_subtype; 144 uint8_t _platform2[4]; 145 uint8_t _resv1[2]; 146 uint16_t action_flags; 147 uint8_t _resv2[4]; 148 } QEMU_PACKED; 149 150 struct rtas_event_log_v6_epow { 151 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */ 152 struct rtas_event_log_v6_section_header hdr; 153 uint8_t sensor_value; 154 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0 155 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1 156 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2 157 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3 158 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4 159 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5 160 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7 161 uint8_t event_modifier; 162 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1 163 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2 164 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3 165 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4 166 uint8_t extended_modifier; 167 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0 168 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1 169 uint8_t _resv; 170 uint64_t reason_code; 171 } QEMU_PACKED; 172 173 struct epow_extended_log { 174 struct rtas_event_log_v6 v6hdr; 175 struct rtas_event_log_v6_maina maina; 176 struct rtas_event_log_v6_mainb mainb; 177 struct rtas_event_log_v6_epow epow; 178 } QEMU_PACKED; 179 180 union drc_identifier { 181 uint32_t index; 182 uint32_t count; 183 struct { 184 uint32_t count; 185 uint32_t index; 186 } count_indexed; 187 char name[1]; 188 } QEMU_PACKED; 189 190 struct rtas_event_log_v6_hp { 191 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */ 192 struct rtas_event_log_v6_section_header hdr; 193 uint8_t hotplug_type; 194 #define RTAS_LOG_V6_HP_TYPE_CPU 1 195 #define RTAS_LOG_V6_HP_TYPE_MEMORY 2 196 #define RTAS_LOG_V6_HP_TYPE_SLOT 3 197 #define RTAS_LOG_V6_HP_TYPE_PHB 4 198 #define RTAS_LOG_V6_HP_TYPE_PCI 5 199 #define RTAS_LOG_V6_HP_TYPE_PMEM 6 200 uint8_t hotplug_action; 201 #define RTAS_LOG_V6_HP_ACTION_ADD 1 202 #define RTAS_LOG_V6_HP_ACTION_REMOVE 2 203 uint8_t hotplug_identifier; 204 #define RTAS_LOG_V6_HP_ID_DRC_NAME 1 205 #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2 206 #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3 207 #define RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED 4 208 uint8_t reserved; 209 union drc_identifier drc_id; 210 } QEMU_PACKED; 211 212 struct hp_extended_log { 213 struct rtas_event_log_v6 v6hdr; 214 struct rtas_event_log_v6_maina maina; 215 struct rtas_event_log_v6_mainb mainb; 216 struct rtas_event_log_v6_hp hp; 217 } QEMU_PACKED; 218 219 struct rtas_event_log_v6_mc { 220 #define RTAS_LOG_V6_SECTION_ID_MC 0x4D43 /* MC */ 221 struct rtas_event_log_v6_section_header hdr; 222 uint32_t fru_id; 223 uint32_t proc_id; 224 uint8_t error_type; 225 #define RTAS_LOG_V6_MC_TYPE_UE 0 226 #define RTAS_LOG_V6_MC_TYPE_SLB 1 227 #define RTAS_LOG_V6_MC_TYPE_ERAT 2 228 #define RTAS_LOG_V6_MC_TYPE_TLB 4 229 #define RTAS_LOG_V6_MC_TYPE_D_CACHE 5 230 #define RTAS_LOG_V6_MC_TYPE_I_CACHE 7 231 uint8_t sub_err_type; 232 #define RTAS_LOG_V6_MC_UE_INDETERMINATE 0 233 #define RTAS_LOG_V6_MC_UE_IFETCH 1 234 #define RTAS_LOG_V6_MC_UE_PAGE_TABLE_WALK_IFETCH 2 235 #define RTAS_LOG_V6_MC_UE_LOAD_STORE 3 236 #define RTAS_LOG_V6_MC_UE_PAGE_TABLE_WALK_LOAD_STORE 4 237 #define RTAS_LOG_V6_MC_SLB_PARITY 0 238 #define RTAS_LOG_V6_MC_SLB_MULTIHIT 1 239 #define RTAS_LOG_V6_MC_SLB_INDETERMINATE 2 240 #define RTAS_LOG_V6_MC_ERAT_PARITY 1 241 #define RTAS_LOG_V6_MC_ERAT_MULTIHIT 2 242 #define RTAS_LOG_V6_MC_ERAT_INDETERMINATE 3 243 #define RTAS_LOG_V6_MC_TLB_PARITY 1 244 #define RTAS_LOG_V6_MC_TLB_MULTIHIT 2 245 #define RTAS_LOG_V6_MC_TLB_INDETERMINATE 3 246 /* 247 * Per PAPR, 248 * For UE error type, set bit 1 of sub_err_type to indicate effective addr is 249 * provided. For other error types (SLB/ERAT/TLB), set bit 0 to indicate 250 * same. 251 */ 252 #define RTAS_LOG_V6_MC_UE_EA_ADDR_PROVIDED 0x40 253 #define RTAS_LOG_V6_MC_EA_ADDR_PROVIDED 0x80 254 uint8_t reserved_1[6]; 255 uint64_t effective_address; 256 uint64_t logical_address; 257 } QEMU_PACKED; 258 259 struct mc_extended_log { 260 struct rtas_event_log_v6 v6hdr; 261 struct rtas_event_log_v6_mc mc; 262 } QEMU_PACKED; 263 264 struct MC_ierror_table { 265 unsigned long srr1_mask; 266 unsigned long srr1_value; 267 bool nip_valid; /* nip is a valid indicator of faulting address */ 268 uint8_t error_type; 269 uint8_t error_subtype; 270 unsigned int initiator; 271 unsigned int severity; 272 }; 273 274 static const struct MC_ierror_table mc_ierror_table[] = { 275 { 0x00000000081c0000, 0x0000000000040000, true, 276 RTAS_LOG_V6_MC_TYPE_UE, RTAS_LOG_V6_MC_UE_IFETCH, 277 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 278 { 0x00000000081c0000, 0x0000000000080000, true, 279 RTAS_LOG_V6_MC_TYPE_SLB, RTAS_LOG_V6_MC_SLB_PARITY, 280 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 281 { 0x00000000081c0000, 0x00000000000c0000, true, 282 RTAS_LOG_V6_MC_TYPE_SLB, RTAS_LOG_V6_MC_SLB_MULTIHIT, 283 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 284 { 0x00000000081c0000, 0x0000000000100000, true, 285 RTAS_LOG_V6_MC_TYPE_ERAT, RTAS_LOG_V6_MC_ERAT_MULTIHIT, 286 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 287 { 0x00000000081c0000, 0x0000000000140000, true, 288 RTAS_LOG_V6_MC_TYPE_TLB, RTAS_LOG_V6_MC_TLB_MULTIHIT, 289 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 290 { 0x00000000081c0000, 0x0000000000180000, true, 291 RTAS_LOG_V6_MC_TYPE_UE, RTAS_LOG_V6_MC_UE_PAGE_TABLE_WALK_IFETCH, 292 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, } }; 293 294 struct MC_derror_table { 295 unsigned long dsisr_value; 296 bool dar_valid; /* dar is a valid indicator of faulting address */ 297 uint8_t error_type; 298 uint8_t error_subtype; 299 unsigned int initiator; 300 unsigned int severity; 301 }; 302 303 static const struct MC_derror_table mc_derror_table[] = { 304 { 0x00008000, false, 305 RTAS_LOG_V6_MC_TYPE_UE, RTAS_LOG_V6_MC_UE_LOAD_STORE, 306 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 307 { 0x00004000, true, 308 RTAS_LOG_V6_MC_TYPE_UE, RTAS_LOG_V6_MC_UE_PAGE_TABLE_WALK_LOAD_STORE, 309 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 310 { 0x00000800, true, 311 RTAS_LOG_V6_MC_TYPE_ERAT, RTAS_LOG_V6_MC_ERAT_MULTIHIT, 312 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 313 { 0x00000400, true, 314 RTAS_LOG_V6_MC_TYPE_TLB, RTAS_LOG_V6_MC_TLB_MULTIHIT, 315 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 316 { 0x00000080, true, 317 RTAS_LOG_V6_MC_TYPE_SLB, RTAS_LOG_V6_MC_SLB_MULTIHIT, /* Before PARITY */ 318 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, }, 319 { 0x00000100, true, 320 RTAS_LOG_V6_MC_TYPE_SLB, RTAS_LOG_V6_MC_SLB_PARITY, 321 RTAS_LOG_INITIATOR_CPU, RTAS_LOG_SEVERITY_ERROR_SYNC, } }; 322 323 #define SRR1_MC_LOADSTORE(srr1) ((srr1) & PPC_BIT(42)) 324 325 typedef enum EventClass { 326 EVENT_CLASS_INTERNAL_ERRORS = 0, 327 EVENT_CLASS_EPOW = 1, 328 EVENT_CLASS_RESERVED = 2, 329 EVENT_CLASS_HOT_PLUG = 3, 330 EVENT_CLASS_IO = 4, 331 EVENT_CLASS_MAX 332 } EventClassIndex; 333 #define EVENT_CLASS_MASK(index) (1 << (31 - index)) 334 335 static const char * const event_names[EVENT_CLASS_MAX] = { 336 [EVENT_CLASS_INTERNAL_ERRORS] = "internal-errors", 337 [EVENT_CLASS_EPOW] = "epow-events", 338 [EVENT_CLASS_HOT_PLUG] = "hot-plug-events", 339 [EVENT_CLASS_IO] = "ibm,io-events", 340 }; 341 342 struct SpaprEventSource { 343 int irq; 344 uint32_t mask; 345 bool enabled; 346 }; 347 348 static SpaprEventSource *spapr_event_sources_new(void) 349 { 350 return g_new0(SpaprEventSource, EVENT_CLASS_MAX); 351 } 352 353 static void spapr_event_sources_register(SpaprEventSource *event_sources, 354 EventClassIndex index, int irq) 355 { 356 /* we only support 1 irq per event class at the moment */ 357 g_assert(event_sources); 358 g_assert(!event_sources[index].enabled); 359 event_sources[index].irq = irq; 360 event_sources[index].mask = EVENT_CLASS_MASK(index); 361 event_sources[index].enabled = true; 362 } 363 364 static const SpaprEventSource * 365 spapr_event_sources_get_source(SpaprEventSource *event_sources, 366 EventClassIndex index) 367 { 368 g_assert(index < EVENT_CLASS_MAX); 369 g_assert(event_sources); 370 371 return &event_sources[index]; 372 } 373 374 void spapr_dt_events(SpaprMachineState *spapr, void *fdt) 375 { 376 uint32_t irq_ranges[EVENT_CLASS_MAX * 2]; 377 int i, count = 0, event_sources; 378 SpaprEventSource *events = spapr->event_sources; 379 380 g_assert(events); 381 382 _FDT(event_sources = fdt_add_subnode(fdt, 0, "event-sources")); 383 384 for (i = 0, count = 0; i < EVENT_CLASS_MAX; i++) { 385 int node_offset; 386 uint32_t interrupts[2]; 387 const SpaprEventSource *source = 388 spapr_event_sources_get_source(events, i); 389 const char *source_name = event_names[i]; 390 391 if (!source->enabled) { 392 continue; 393 } 394 395 spapr_dt_irq(interrupts, source->irq, false); 396 397 _FDT(node_offset = fdt_add_subnode(fdt, event_sources, source_name)); 398 _FDT(fdt_setprop(fdt, node_offset, "interrupts", interrupts, 399 sizeof(interrupts))); 400 401 irq_ranges[count++] = interrupts[0]; 402 irq_ranges[count++] = cpu_to_be32(1); 403 } 404 405 _FDT((fdt_setprop(fdt, event_sources, "interrupt-controller", NULL, 0))); 406 _FDT((fdt_setprop_cell(fdt, event_sources, "#interrupt-cells", 2))); 407 _FDT((fdt_setprop(fdt, event_sources, "interrupt-ranges", 408 irq_ranges, count * sizeof(uint32_t)))); 409 } 410 411 static const SpaprEventSource * 412 rtas_event_log_to_source(SpaprMachineState *spapr, int log_type) 413 { 414 const SpaprEventSource *source; 415 416 g_assert(spapr->event_sources); 417 418 switch (log_type) { 419 case RTAS_LOG_TYPE_HOTPLUG: 420 source = spapr_event_sources_get_source(spapr->event_sources, 421 EVENT_CLASS_HOT_PLUG); 422 if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) { 423 g_assert(source->enabled); 424 break; 425 } 426 /* fall through back to epow for legacy hotplug interrupt source */ 427 case RTAS_LOG_TYPE_EPOW: 428 source = spapr_event_sources_get_source(spapr->event_sources, 429 EVENT_CLASS_EPOW); 430 break; 431 default: 432 source = NULL; 433 } 434 435 return source; 436 } 437 438 static int rtas_event_log_to_irq(SpaprMachineState *spapr, int log_type) 439 { 440 const SpaprEventSource *source; 441 442 source = rtas_event_log_to_source(spapr, log_type); 443 g_assert(source); 444 g_assert(source->enabled); 445 446 return source->irq; 447 } 448 449 static uint32_t spapr_event_log_entry_type(SpaprEventLogEntry *entry) 450 { 451 return entry->summary & RTAS_LOG_TYPE_MASK; 452 } 453 454 static void rtas_event_log_queue(SpaprMachineState *spapr, 455 SpaprEventLogEntry *entry) 456 { 457 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); 458 } 459 460 static SpaprEventLogEntry *rtas_event_log_dequeue(SpaprMachineState *spapr, 461 uint32_t event_mask) 462 { 463 SpaprEventLogEntry *entry = NULL; 464 465 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 466 const SpaprEventSource *source = 467 rtas_event_log_to_source(spapr, 468 spapr_event_log_entry_type(entry)); 469 470 g_assert(source); 471 if (source->mask & event_mask) { 472 break; 473 } 474 } 475 476 if (entry) { 477 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 478 } 479 480 return entry; 481 } 482 483 static bool rtas_event_log_contains(SpaprMachineState *spapr, uint32_t event_mask) 484 { 485 SpaprEventLogEntry *entry = NULL; 486 487 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 488 const SpaprEventSource *source = 489 rtas_event_log_to_source(spapr, 490 spapr_event_log_entry_type(entry)); 491 492 if (source->mask & event_mask) { 493 return true; 494 } 495 } 496 497 return false; 498 } 499 500 static uint32_t next_plid; 501 502 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 503 { 504 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 505 | RTAS_LOG_V6_B0_BIGENDIAN; 506 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 507 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 508 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 509 } 510 511 static void spapr_init_maina(SpaprMachineState *spapr, 512 struct rtas_event_log_v6_maina *maina, 513 int section_count) 514 { 515 struct tm tm; 516 int year; 517 518 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 519 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 520 /* FIXME: section version, subtype and creator id? */ 521 spapr_rtc_read(&spapr->rtc, &tm, NULL); 522 year = tm.tm_year + 1900; 523 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 524 | (to_bcd(year % 100) << 16) 525 | (to_bcd(tm.tm_mon + 1) << 8) 526 | to_bcd(tm.tm_mday)); 527 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 528 | (to_bcd(tm.tm_min) << 16) 529 | (to_bcd(tm.tm_sec) << 8)); 530 maina->creator_id = 'H'; /* Hypervisor */ 531 maina->section_count = section_count; 532 maina->plid = next_plid++; 533 } 534 535 static void spapr_powerdown_req(Notifier *n, void *opaque) 536 { 537 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 538 SpaprEventLogEntry *entry; 539 struct rtas_event_log_v6 *v6hdr; 540 struct rtas_event_log_v6_maina *maina; 541 struct rtas_event_log_v6_mainb *mainb; 542 struct rtas_event_log_v6_epow *epow; 543 struct epow_extended_log *new_epow; 544 545 entry = g_new(SpaprEventLogEntry, 1); 546 new_epow = g_malloc0(sizeof(*new_epow)); 547 entry->extended_log = new_epow; 548 549 v6hdr = &new_epow->v6hdr; 550 maina = &new_epow->maina; 551 mainb = &new_epow->mainb; 552 epow = &new_epow->epow; 553 554 entry->summary = RTAS_LOG_VERSION_6 555 | RTAS_LOG_SEVERITY_EVENT 556 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 557 | RTAS_LOG_OPTIONAL_PART_PRESENT 558 | RTAS_LOG_TYPE_EPOW; 559 entry->extended_length = sizeof(*new_epow); 560 561 spapr_init_v6hdr(v6hdr); 562 spapr_init_maina(spapr, maina, 3 /* Main-A, Main-B and EPOW */); 563 564 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 565 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 566 /* FIXME: section version, subtype and creator id? */ 567 mainb->subsystem_id = 0xa0; /* External environment */ 568 mainb->event_severity = 0x00; /* Informational / non-error */ 569 mainb->event_subtype = 0xd0; /* Normal shutdown */ 570 571 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 572 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 573 epow->hdr.section_version = 2; /* includes extended modifier */ 574 /* FIXME: section subtype and creator id? */ 575 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 576 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 577 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 578 579 rtas_event_log_queue(spapr, entry); 580 581 qemu_irq_pulse(spapr_qirq(spapr, 582 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_EPOW))); 583 } 584 585 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, 586 SpaprDrcType drc_type, 587 union drc_identifier *drc_id) 588 { 589 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 590 SpaprEventLogEntry *entry; 591 struct hp_extended_log *new_hp; 592 struct rtas_event_log_v6 *v6hdr; 593 struct rtas_event_log_v6_maina *maina; 594 struct rtas_event_log_v6_mainb *mainb; 595 struct rtas_event_log_v6_hp *hp; 596 597 entry = g_new(SpaprEventLogEntry, 1); 598 new_hp = g_malloc0(sizeof(struct hp_extended_log)); 599 entry->extended_log = new_hp; 600 601 v6hdr = &new_hp->v6hdr; 602 maina = &new_hp->maina; 603 mainb = &new_hp->mainb; 604 hp = &new_hp->hp; 605 606 entry->summary = RTAS_LOG_VERSION_6 607 | RTAS_LOG_SEVERITY_EVENT 608 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 609 | RTAS_LOG_OPTIONAL_PART_PRESENT 610 | RTAS_LOG_INITIATOR_HOTPLUG 611 | RTAS_LOG_TYPE_HOTPLUG; 612 entry->extended_length = sizeof(*new_hp); 613 614 spapr_init_v6hdr(v6hdr); 615 spapr_init_maina(spapr, maina, 3 /* Main-A, Main-B, HP */); 616 617 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 618 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 619 mainb->subsystem_id = 0x80; /* External environment */ 620 mainb->event_severity = 0x00; /* Informational / non-error */ 621 mainb->event_subtype = 0x00; /* Normal shutdown */ 622 623 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG); 624 hp->hdr.section_length = cpu_to_be16(sizeof(*hp)); 625 hp->hdr.section_version = 1; /* includes extended modifier */ 626 hp->hotplug_action = hp_action; 627 hp->hotplug_identifier = hp_id; 628 629 switch (drc_type) { 630 case SPAPR_DR_CONNECTOR_TYPE_PCI: 631 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; 632 break; 633 case SPAPR_DR_CONNECTOR_TYPE_LMB: 634 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 635 break; 636 case SPAPR_DR_CONNECTOR_TYPE_CPU: 637 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU; 638 break; 639 case SPAPR_DR_CONNECTOR_TYPE_PHB: 640 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PHB; 641 break; 642 case SPAPR_DR_CONNECTOR_TYPE_PMEM: 643 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PMEM; 644 break; 645 default: 646 /* we shouldn't be signaling hotplug events for resources 647 * that don't support them 648 */ 649 g_assert(false); 650 return; 651 } 652 653 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 654 hp->drc_id.count = cpu_to_be32(drc_id->count); 655 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 656 hp->drc_id.index = cpu_to_be32(drc_id->index); 657 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED) { 658 /* we should not be using count_indexed value unless the guest 659 * supports dedicated hotplug event source 660 */ 661 g_assert(spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)); 662 hp->drc_id.count_indexed.count = 663 cpu_to_be32(drc_id->count_indexed.count); 664 hp->drc_id.count_indexed.index = 665 cpu_to_be32(drc_id->count_indexed.index); 666 } 667 668 rtas_event_log_queue(spapr, entry); 669 670 qemu_irq_pulse(spapr_qirq(spapr, 671 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_HOTPLUG))); 672 } 673 674 void spapr_hotplug_req_add_by_index(SpaprDrc *drc) 675 { 676 SpaprDrcType drc_type = spapr_drc_type(drc); 677 union drc_identifier drc_id; 678 679 drc_id.index = spapr_drc_index(drc); 680 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 681 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 682 } 683 684 void spapr_hotplug_req_remove_by_index(SpaprDrc *drc) 685 { 686 SpaprDrcType drc_type = spapr_drc_type(drc); 687 union drc_identifier drc_id; 688 689 drc_id.index = spapr_drc_index(drc); 690 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 691 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 692 } 693 694 void spapr_hotplug_req_add_by_count(SpaprDrcType drc_type, 695 uint32_t count) 696 { 697 union drc_identifier drc_id; 698 699 drc_id.count = count; 700 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 701 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 702 } 703 704 void spapr_hotplug_req_remove_by_count(SpaprDrcType drc_type, 705 uint32_t count) 706 { 707 union drc_identifier drc_id; 708 709 drc_id.count = count; 710 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 711 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 712 } 713 714 void spapr_hotplug_req_add_by_count_indexed(SpaprDrcType drc_type, 715 uint32_t count, uint32_t index) 716 { 717 union drc_identifier drc_id; 718 719 drc_id.count_indexed.count = count; 720 drc_id.count_indexed.index = index; 721 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 722 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 723 } 724 725 void spapr_hotplug_req_remove_by_count_indexed(SpaprDrcType drc_type, 726 uint32_t count, uint32_t index) 727 { 728 union drc_identifier drc_id; 729 730 drc_id.count_indexed.count = count; 731 drc_id.count_indexed.index = index; 732 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 733 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 734 } 735 736 static void spapr_mc_set_ea_provided_flag(struct mc_extended_log *ext_elog) 737 { 738 switch (ext_elog->mc.error_type) { 739 case RTAS_LOG_V6_MC_TYPE_UE: 740 ext_elog->mc.sub_err_type |= RTAS_LOG_V6_MC_UE_EA_ADDR_PROVIDED; 741 break; 742 case RTAS_LOG_V6_MC_TYPE_SLB: 743 case RTAS_LOG_V6_MC_TYPE_ERAT: 744 case RTAS_LOG_V6_MC_TYPE_TLB: 745 ext_elog->mc.sub_err_type |= RTAS_LOG_V6_MC_EA_ADDR_PROVIDED; 746 break; 747 default: 748 break; 749 } 750 } 751 752 static uint32_t spapr_mce_get_elog_type(PowerPCCPU *cpu, bool recovered, 753 struct mc_extended_log *ext_elog) 754 { 755 int i; 756 CPUPPCState *env = &cpu->env; 757 uint32_t summary; 758 uint64_t dsisr = env->spr[SPR_DSISR]; 759 760 summary = RTAS_LOG_VERSION_6 | RTAS_LOG_OPTIONAL_PART_PRESENT; 761 if (recovered) { 762 summary |= RTAS_LOG_DISPOSITION_FULLY_RECOVERED; 763 } else { 764 summary |= RTAS_LOG_DISPOSITION_NOT_RECOVERED; 765 } 766 767 if (SRR1_MC_LOADSTORE(env->spr[SPR_SRR1])) { 768 for (i = 0; i < ARRAY_SIZE(mc_derror_table); i++) { 769 if (!(dsisr & mc_derror_table[i].dsisr_value)) { 770 continue; 771 } 772 773 ext_elog->mc.error_type = mc_derror_table[i].error_type; 774 ext_elog->mc.sub_err_type = mc_derror_table[i].error_subtype; 775 if (mc_derror_table[i].dar_valid) { 776 ext_elog->mc.effective_address = cpu_to_be64(env->spr[SPR_DAR]); 777 spapr_mc_set_ea_provided_flag(ext_elog); 778 } 779 780 summary |= mc_derror_table[i].initiator 781 | mc_derror_table[i].severity; 782 783 return summary; 784 } 785 } else { 786 for (i = 0; i < ARRAY_SIZE(mc_ierror_table); i++) { 787 if ((env->spr[SPR_SRR1] & mc_ierror_table[i].srr1_mask) != 788 mc_ierror_table[i].srr1_value) { 789 continue; 790 } 791 792 ext_elog->mc.error_type = mc_ierror_table[i].error_type; 793 ext_elog->mc.sub_err_type = mc_ierror_table[i].error_subtype; 794 if (mc_ierror_table[i].nip_valid) { 795 ext_elog->mc.effective_address = cpu_to_be64(env->nip); 796 spapr_mc_set_ea_provided_flag(ext_elog); 797 } 798 799 summary |= mc_ierror_table[i].initiator 800 | mc_ierror_table[i].severity; 801 802 return summary; 803 } 804 } 805 806 summary |= RTAS_LOG_INITIATOR_CPU; 807 return summary; 808 } 809 810 static void spapr_mce_dispatch_elog(SpaprMachineState *spapr, PowerPCCPU *cpu, 811 bool recovered) 812 { 813 CPUState *cs = CPU(cpu); 814 CPUPPCState *env = &cpu->env; 815 uint64_t rtas_addr; 816 struct rtas_error_log log; 817 struct mc_extended_log *ext_elog; 818 uint32_t summary; 819 820 ext_elog = g_malloc0(sizeof(*ext_elog)); 821 summary = spapr_mce_get_elog_type(cpu, recovered, ext_elog); 822 823 log.summary = cpu_to_be32(summary); 824 log.extended_length = cpu_to_be32(sizeof(*ext_elog)); 825 826 spapr_init_v6hdr(&ext_elog->v6hdr); 827 ext_elog->mc.hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MC); 828 ext_elog->mc.hdr.section_length = 829 cpu_to_be16(sizeof(struct rtas_event_log_v6_mc)); 830 ext_elog->mc.hdr.section_version = 1; 831 832 /* get rtas addr from fdt */ 833 rtas_addr = spapr_get_rtas_addr(); 834 if (!rtas_addr) { 835 if (!recovered) { 836 error_report( 837 "FWNMI: Unable to deliver machine check to guest: rtas_addr not found."); 838 qemu_system_guest_panicked(NULL); 839 } else { 840 warn_report( 841 "FWNMI: Unable to deliver machine check to guest: rtas_addr not found. " 842 "Machine check recovered."); 843 } 844 g_free(ext_elog); 845 return; 846 } 847 848 /* 849 * By taking the interlock, we assume that the MCE will be 850 * delivered to the guest. CAUTION: don't add anything that could 851 * prevent the MCE to be delivered after this line, otherwise the 852 * guest won't be able to release the interlock and ultimately 853 * hang/crash? 854 */ 855 spapr->fwnmi_machine_check_interlock = cpu->vcpu_id; 856 857 stq_be_phys(&address_space_memory, rtas_addr + RTAS_ERROR_LOG_OFFSET, 858 env->gpr[3]); 859 cpu_physical_memory_write(rtas_addr + RTAS_ERROR_LOG_OFFSET + 860 sizeof(env->gpr[3]), &log, sizeof(log)); 861 cpu_physical_memory_write(rtas_addr + RTAS_ERROR_LOG_OFFSET + 862 sizeof(env->gpr[3]) + sizeof(log), ext_elog, 863 sizeof(*ext_elog)); 864 g_free(ext_elog); 865 866 env->gpr[3] = rtas_addr + RTAS_ERROR_LOG_OFFSET; 867 868 ppc_cpu_do_fwnmi_machine_check(cs, spapr->fwnmi_machine_check_addr); 869 } 870 871 void spapr_mce_req_event(PowerPCCPU *cpu, bool recovered) 872 { 873 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 874 CPUState *cs = CPU(cpu); 875 int ret; 876 Error *local_err = NULL; 877 878 if (spapr->fwnmi_machine_check_addr == -1) { 879 /* Non-FWNMI case, deliver it like an architected CPU interrupt. */ 880 cs->exception_index = POWERPC_EXCP_MCHECK; 881 ppc_cpu_do_interrupt(cs); 882 return; 883 } 884 885 /* Wait for FWNMI interlock. */ 886 while (spapr->fwnmi_machine_check_interlock != -1) { 887 /* 888 * Check whether the same CPU got machine check error 889 * while still handling the mc error (i.e., before 890 * that CPU called "ibm,nmi-interlock") 891 */ 892 if (spapr->fwnmi_machine_check_interlock == cpu->vcpu_id) { 893 if (!recovered) { 894 error_report( 895 "FWNMI: Unable to deliver machine check to guest: nested machine check."); 896 qemu_system_guest_panicked(NULL); 897 } else { 898 warn_report( 899 "FWNMI: Unable to deliver machine check to guest: nested machine check. " 900 "Machine check recovered."); 901 } 902 return; 903 } 904 qemu_cond_wait_iothread(&spapr->fwnmi_machine_check_interlock_cond); 905 if (spapr->fwnmi_machine_check_addr == -1) { 906 /* 907 * If the machine was reset while waiting for the interlock, 908 * abort the delivery. The machine check applies to a context 909 * that no longer exists, so it wouldn't make sense to deliver 910 * it now. 911 */ 912 return; 913 } 914 } 915 916 ret = migrate_add_blocker(spapr->fwnmi_migration_blocker, &local_err); 917 if (ret == -EBUSY) { 918 /* 919 * We don't want to abort so we let the migration to continue. 920 * In a rare case, the machine check handler will run on the target. 921 * Though this is not preferable, it is better than aborting 922 * the migration or killing the VM. It is okay to call 923 * migrate_del_blocker on a blocker that was not added (which the 924 * nmi-interlock handler would do when it's called after this). 925 */ 926 warn_report("Received a fwnmi while migration was in progress"); 927 } 928 929 spapr_mce_dispatch_elog(spapr, cpu, recovered); 930 } 931 932 static void check_exception(PowerPCCPU *cpu, SpaprMachineState *spapr, 933 uint32_t token, uint32_t nargs, 934 target_ulong args, 935 uint32_t nret, target_ulong rets) 936 { 937 uint32_t mask, buf, len, event_len; 938 uint64_t xinfo; 939 SpaprEventLogEntry *event; 940 struct rtas_error_log header; 941 int i; 942 943 if ((nargs < 6) || (nargs > 7) || nret != 1) { 944 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 945 return; 946 } 947 948 xinfo = rtas_ld(args, 1); 949 mask = rtas_ld(args, 2); 950 buf = rtas_ld(args, 4); 951 len = rtas_ld(args, 5); 952 if (nargs == 7) { 953 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 954 } 955 956 event = rtas_event_log_dequeue(spapr, mask); 957 if (!event) { 958 goto out_no_events; 959 } 960 961 event_len = event->extended_length + sizeof(header); 962 963 if (event_len < len) { 964 len = event_len; 965 } 966 967 header.summary = cpu_to_be32(event->summary); 968 header.extended_length = cpu_to_be32(event->extended_length); 969 cpu_physical_memory_write(buf, &header, sizeof(header)); 970 cpu_physical_memory_write(buf + sizeof(header), event->extended_log, 971 event->extended_length); 972 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 973 g_free(event->extended_log); 974 g_free(event); 975 976 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 977 * there are still pending events to be fetched via check-exception. We 978 * do the latter here, since our code relies on edge-triggered 979 * interrupts. 980 */ 981 for (i = 0; i < EVENT_CLASS_MAX; i++) { 982 if (rtas_event_log_contains(spapr, EVENT_CLASS_MASK(i))) { 983 const SpaprEventSource *source = 984 spapr_event_sources_get_source(spapr->event_sources, i); 985 986 g_assert(source->enabled); 987 qemu_irq_pulse(spapr_qirq(spapr, source->irq)); 988 } 989 } 990 991 return; 992 993 out_no_events: 994 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 995 } 996 997 static void event_scan(PowerPCCPU *cpu, SpaprMachineState *spapr, 998 uint32_t token, uint32_t nargs, 999 target_ulong args, 1000 uint32_t nret, target_ulong rets) 1001 { 1002 int i; 1003 if (nargs != 4 || nret != 1) { 1004 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 1005 return; 1006 } 1007 1008 for (i = 0; i < EVENT_CLASS_MAX; i++) { 1009 if (rtas_event_log_contains(spapr, EVENT_CLASS_MASK(i))) { 1010 const SpaprEventSource *source = 1011 spapr_event_sources_get_source(spapr->event_sources, i); 1012 1013 g_assert(source->enabled); 1014 qemu_irq_pulse(spapr_qirq(spapr, source->irq)); 1015 } 1016 } 1017 1018 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 1019 } 1020 1021 void spapr_clear_pending_events(SpaprMachineState *spapr) 1022 { 1023 SpaprEventLogEntry *entry = NULL, *next_entry; 1024 1025 QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) { 1026 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 1027 g_free(entry->extended_log); 1028 g_free(entry); 1029 } 1030 } 1031 1032 void spapr_clear_pending_hotplug_events(SpaprMachineState *spapr) 1033 { 1034 SpaprEventLogEntry *entry = NULL, *next_entry; 1035 1036 QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) { 1037 if (spapr_event_log_entry_type(entry) == RTAS_LOG_TYPE_HOTPLUG) { 1038 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 1039 g_free(entry->extended_log); 1040 g_free(entry); 1041 } 1042 } 1043 } 1044 1045 void spapr_events_init(SpaprMachineState *spapr) 1046 { 1047 int epow_irq = SPAPR_IRQ_EPOW; 1048 1049 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 1050 epow_irq = spapr_irq_findone(spapr, &error_fatal); 1051 } 1052 1053 spapr_irq_claim(spapr, epow_irq, false, &error_fatal); 1054 1055 QTAILQ_INIT(&spapr->pending_events); 1056 1057 spapr->event_sources = spapr_event_sources_new(); 1058 1059 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW, 1060 epow_irq); 1061 1062 /* NOTE: if machine supports modern/dedicated hotplug event source, 1063 * we add it to the device-tree unconditionally. This means we may 1064 * have cases where the source is enabled in QEMU, but unused by the 1065 * guest because it does not support modern hotplug events, so we 1066 * take care to rely on checking for negotiation of OV5_HP_EVT option 1067 * before attempting to use it to signal events, rather than simply 1068 * checking that it's enabled. 1069 */ 1070 if (spapr->use_hotplug_event_source) { 1071 int hp_irq = SPAPR_IRQ_HOTPLUG; 1072 1073 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 1074 hp_irq = spapr_irq_findone(spapr, &error_fatal); 1075 } 1076 1077 spapr_irq_claim(spapr, hp_irq, false, &error_fatal); 1078 1079 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG, 1080 hp_irq); 1081 } 1082 1083 spapr->epow_notifier.notify = spapr_powerdown_req; 1084 qemu_register_powerdown_notifier(&spapr->epow_notifier); 1085 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 1086 check_exception); 1087 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 1088 } 1089