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(uint32_t event_mask) 484 { 485 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 486 SpaprEventLogEntry *entry = NULL; 487 488 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 489 const SpaprEventSource *source = 490 rtas_event_log_to_source(spapr, 491 spapr_event_log_entry_type(entry)); 492 493 if (source->mask & event_mask) { 494 return true; 495 } 496 } 497 498 return false; 499 } 500 501 static uint32_t next_plid; 502 503 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 504 { 505 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 506 | RTAS_LOG_V6_B0_BIGENDIAN; 507 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 508 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 509 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 510 } 511 512 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina, 513 int section_count) 514 { 515 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 516 struct tm tm; 517 int year; 518 519 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 520 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 521 /* FIXME: section version, subtype and creator id? */ 522 spapr_rtc_read(&spapr->rtc, &tm, NULL); 523 year = tm.tm_year + 1900; 524 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 525 | (to_bcd(year % 100) << 16) 526 | (to_bcd(tm.tm_mon + 1) << 8) 527 | to_bcd(tm.tm_mday)); 528 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 529 | (to_bcd(tm.tm_min) << 16) 530 | (to_bcd(tm.tm_sec) << 8)); 531 maina->creator_id = 'H'; /* Hypervisor */ 532 maina->section_count = section_count; 533 maina->plid = next_plid++; 534 } 535 536 static void spapr_powerdown_req(Notifier *n, void *opaque) 537 { 538 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 539 SpaprEventLogEntry *entry; 540 struct rtas_event_log_v6 *v6hdr; 541 struct rtas_event_log_v6_maina *maina; 542 struct rtas_event_log_v6_mainb *mainb; 543 struct rtas_event_log_v6_epow *epow; 544 struct epow_extended_log *new_epow; 545 546 entry = g_new(SpaprEventLogEntry, 1); 547 new_epow = g_malloc0(sizeof(*new_epow)); 548 entry->extended_log = new_epow; 549 550 v6hdr = &new_epow->v6hdr; 551 maina = &new_epow->maina; 552 mainb = &new_epow->mainb; 553 epow = &new_epow->epow; 554 555 entry->summary = RTAS_LOG_VERSION_6 556 | RTAS_LOG_SEVERITY_EVENT 557 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 558 | RTAS_LOG_OPTIONAL_PART_PRESENT 559 | RTAS_LOG_TYPE_EPOW; 560 entry->extended_length = sizeof(*new_epow); 561 562 spapr_init_v6hdr(v6hdr); 563 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); 564 565 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 566 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 567 /* FIXME: section version, subtype and creator id? */ 568 mainb->subsystem_id = 0xa0; /* External environment */ 569 mainb->event_severity = 0x00; /* Informational / non-error */ 570 mainb->event_subtype = 0xd0; /* Normal shutdown */ 571 572 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 573 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 574 epow->hdr.section_version = 2; /* includes extended modifier */ 575 /* FIXME: section subtype and creator id? */ 576 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 577 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 578 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 579 580 rtas_event_log_queue(spapr, entry); 581 582 qemu_irq_pulse(spapr_qirq(spapr, 583 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_EPOW))); 584 } 585 586 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, 587 SpaprDrcType drc_type, 588 union drc_identifier *drc_id) 589 { 590 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 591 SpaprEventLogEntry *entry; 592 struct hp_extended_log *new_hp; 593 struct rtas_event_log_v6 *v6hdr; 594 struct rtas_event_log_v6_maina *maina; 595 struct rtas_event_log_v6_mainb *mainb; 596 struct rtas_event_log_v6_hp *hp; 597 598 entry = g_new(SpaprEventLogEntry, 1); 599 new_hp = g_malloc0(sizeof(struct hp_extended_log)); 600 entry->extended_log = new_hp; 601 602 v6hdr = &new_hp->v6hdr; 603 maina = &new_hp->maina; 604 mainb = &new_hp->mainb; 605 hp = &new_hp->hp; 606 607 entry->summary = RTAS_LOG_VERSION_6 608 | RTAS_LOG_SEVERITY_EVENT 609 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 610 | RTAS_LOG_OPTIONAL_PART_PRESENT 611 | RTAS_LOG_INITIATOR_HOTPLUG 612 | RTAS_LOG_TYPE_HOTPLUG; 613 entry->extended_length = sizeof(*new_hp); 614 615 spapr_init_v6hdr(v6hdr); 616 spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */); 617 618 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 619 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 620 mainb->subsystem_id = 0x80; /* External environment */ 621 mainb->event_severity = 0x00; /* Informational / non-error */ 622 mainb->event_subtype = 0x00; /* Normal shutdown */ 623 624 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG); 625 hp->hdr.section_length = cpu_to_be16(sizeof(*hp)); 626 hp->hdr.section_version = 1; /* includes extended modifier */ 627 hp->hotplug_action = hp_action; 628 hp->hotplug_identifier = hp_id; 629 630 switch (drc_type) { 631 case SPAPR_DR_CONNECTOR_TYPE_PCI: 632 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; 633 break; 634 case SPAPR_DR_CONNECTOR_TYPE_LMB: 635 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 636 break; 637 case SPAPR_DR_CONNECTOR_TYPE_CPU: 638 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU; 639 break; 640 case SPAPR_DR_CONNECTOR_TYPE_PHB: 641 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PHB; 642 break; 643 case SPAPR_DR_CONNECTOR_TYPE_PMEM: 644 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PMEM; 645 break; 646 default: 647 /* we shouldn't be signaling hotplug events for resources 648 * that don't support them 649 */ 650 g_assert(false); 651 return; 652 } 653 654 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 655 hp->drc_id.count = cpu_to_be32(drc_id->count); 656 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 657 hp->drc_id.index = cpu_to_be32(drc_id->index); 658 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED) { 659 /* we should not be using count_indexed value unless the guest 660 * supports dedicated hotplug event source 661 */ 662 g_assert(spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)); 663 hp->drc_id.count_indexed.count = 664 cpu_to_be32(drc_id->count_indexed.count); 665 hp->drc_id.count_indexed.index = 666 cpu_to_be32(drc_id->count_indexed.index); 667 } 668 669 rtas_event_log_queue(spapr, entry); 670 671 qemu_irq_pulse(spapr_qirq(spapr, 672 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_HOTPLUG))); 673 } 674 675 void spapr_hotplug_req_add_by_index(SpaprDrc *drc) 676 { 677 SpaprDrcType drc_type = spapr_drc_type(drc); 678 union drc_identifier drc_id; 679 680 drc_id.index = spapr_drc_index(drc); 681 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 682 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 683 } 684 685 void spapr_hotplug_req_remove_by_index(SpaprDrc *drc) 686 { 687 SpaprDrcType drc_type = spapr_drc_type(drc); 688 union drc_identifier drc_id; 689 690 drc_id.index = spapr_drc_index(drc); 691 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 692 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 693 } 694 695 void spapr_hotplug_req_add_by_count(SpaprDrcType drc_type, 696 uint32_t count) 697 { 698 union drc_identifier drc_id; 699 700 drc_id.count = count; 701 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 702 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 703 } 704 705 void spapr_hotplug_req_remove_by_count(SpaprDrcType drc_type, 706 uint32_t count) 707 { 708 union drc_identifier drc_id; 709 710 drc_id.count = count; 711 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 712 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 713 } 714 715 void spapr_hotplug_req_add_by_count_indexed(SpaprDrcType drc_type, 716 uint32_t count, uint32_t index) 717 { 718 union drc_identifier drc_id; 719 720 drc_id.count_indexed.count = count; 721 drc_id.count_indexed.index = index; 722 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 723 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 724 } 725 726 void spapr_hotplug_req_remove_by_count_indexed(SpaprDrcType drc_type, 727 uint32_t count, uint32_t index) 728 { 729 union drc_identifier drc_id; 730 731 drc_id.count_indexed.count = count; 732 drc_id.count_indexed.index = index; 733 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 734 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 735 } 736 737 static void spapr_mc_set_ea_provided_flag(struct mc_extended_log *ext_elog) 738 { 739 switch (ext_elog->mc.error_type) { 740 case RTAS_LOG_V6_MC_TYPE_UE: 741 ext_elog->mc.sub_err_type |= RTAS_LOG_V6_MC_UE_EA_ADDR_PROVIDED; 742 break; 743 case RTAS_LOG_V6_MC_TYPE_SLB: 744 case RTAS_LOG_V6_MC_TYPE_ERAT: 745 case RTAS_LOG_V6_MC_TYPE_TLB: 746 ext_elog->mc.sub_err_type |= RTAS_LOG_V6_MC_EA_ADDR_PROVIDED; 747 break; 748 default: 749 break; 750 } 751 } 752 753 static uint32_t spapr_mce_get_elog_type(PowerPCCPU *cpu, bool recovered, 754 struct mc_extended_log *ext_elog) 755 { 756 int i; 757 CPUPPCState *env = &cpu->env; 758 uint32_t summary; 759 uint64_t dsisr = env->spr[SPR_DSISR]; 760 761 summary = RTAS_LOG_VERSION_6 | RTAS_LOG_OPTIONAL_PART_PRESENT; 762 if (recovered) { 763 summary |= RTAS_LOG_DISPOSITION_FULLY_RECOVERED; 764 } else { 765 summary |= RTAS_LOG_DISPOSITION_NOT_RECOVERED; 766 } 767 768 if (SRR1_MC_LOADSTORE(env->spr[SPR_SRR1])) { 769 for (i = 0; i < ARRAY_SIZE(mc_derror_table); i++) { 770 if (!(dsisr & mc_derror_table[i].dsisr_value)) { 771 continue; 772 } 773 774 ext_elog->mc.error_type = mc_derror_table[i].error_type; 775 ext_elog->mc.sub_err_type = mc_derror_table[i].error_subtype; 776 if (mc_derror_table[i].dar_valid) { 777 ext_elog->mc.effective_address = cpu_to_be64(env->spr[SPR_DAR]); 778 spapr_mc_set_ea_provided_flag(ext_elog); 779 } 780 781 summary |= mc_derror_table[i].initiator 782 | mc_derror_table[i].severity; 783 784 return summary; 785 } 786 } else { 787 for (i = 0; i < ARRAY_SIZE(mc_ierror_table); i++) { 788 if ((env->spr[SPR_SRR1] & mc_ierror_table[i].srr1_mask) != 789 mc_ierror_table[i].srr1_value) { 790 continue; 791 } 792 793 ext_elog->mc.error_type = mc_ierror_table[i].error_type; 794 ext_elog->mc.sub_err_type = mc_ierror_table[i].error_subtype; 795 if (mc_ierror_table[i].nip_valid) { 796 ext_elog->mc.effective_address = cpu_to_be64(env->nip); 797 spapr_mc_set_ea_provided_flag(ext_elog); 798 } 799 800 summary |= mc_ierror_table[i].initiator 801 | mc_ierror_table[i].severity; 802 803 return summary; 804 } 805 } 806 807 summary |= RTAS_LOG_INITIATOR_CPU; 808 return summary; 809 } 810 811 static void spapr_mce_dispatch_elog(PowerPCCPU *cpu, bool recovered) 812 { 813 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 814 CPUState *cs = CPU(cpu); 815 CPUPPCState *env = &cpu->env; 816 uint64_t rtas_addr; 817 struct rtas_error_log log; 818 struct mc_extended_log *ext_elog; 819 uint32_t summary; 820 821 ext_elog = g_malloc0(sizeof(*ext_elog)); 822 summary = spapr_mce_get_elog_type(cpu, recovered, ext_elog); 823 824 log.summary = cpu_to_be32(summary); 825 log.extended_length = cpu_to_be32(sizeof(*ext_elog)); 826 827 spapr_init_v6hdr(&ext_elog->v6hdr); 828 ext_elog->mc.hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MC); 829 ext_elog->mc.hdr.section_length = 830 cpu_to_be16(sizeof(struct rtas_event_log_v6_mc)); 831 ext_elog->mc.hdr.section_version = 1; 832 833 /* get rtas addr from fdt */ 834 rtas_addr = spapr_get_rtas_addr(); 835 if (!rtas_addr) { 836 if (!recovered) { 837 error_report( 838 "FWNMI: Unable to deliver machine check to guest: rtas_addr not found."); 839 qemu_system_guest_panicked(NULL); 840 } else { 841 warn_report( 842 "FWNMI: Unable to deliver machine check to guest: rtas_addr not found. " 843 "Machine check recovered."); 844 } 845 g_free(ext_elog); 846 return; 847 } 848 849 /* 850 * By taking the interlock, we assume that the MCE will be 851 * delivered to the guest. CAUTION: don't add anything that could 852 * prevent the MCE to be delivered after this line, otherwise the 853 * guest won't be able to release the interlock and ultimately 854 * hang/crash? 855 */ 856 spapr->fwnmi_machine_check_interlock = cpu->vcpu_id; 857 858 stq_be_phys(&address_space_memory, rtas_addr + RTAS_ERROR_LOG_OFFSET, 859 env->gpr[3]); 860 cpu_physical_memory_write(rtas_addr + RTAS_ERROR_LOG_OFFSET + 861 sizeof(env->gpr[3]), &log, sizeof(log)); 862 cpu_physical_memory_write(rtas_addr + RTAS_ERROR_LOG_OFFSET + 863 sizeof(env->gpr[3]) + sizeof(log), ext_elog, 864 sizeof(*ext_elog)); 865 g_free(ext_elog); 866 867 env->gpr[3] = rtas_addr + RTAS_ERROR_LOG_OFFSET; 868 869 ppc_cpu_do_fwnmi_machine_check(cs, spapr->fwnmi_machine_check_addr); 870 } 871 872 void spapr_mce_req_event(PowerPCCPU *cpu, bool recovered) 873 { 874 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 875 CPUState *cs = CPU(cpu); 876 int ret; 877 Error *local_err = NULL; 878 879 if (spapr->fwnmi_machine_check_addr == -1) { 880 /* Non-FWNMI case, deliver it like an architected CPU interrupt. */ 881 cs->exception_index = POWERPC_EXCP_MCHECK; 882 ppc_cpu_do_interrupt(cs); 883 return; 884 } 885 886 /* Wait for FWNMI interlock. */ 887 while (spapr->fwnmi_machine_check_interlock != -1) { 888 /* 889 * Check whether the same CPU got machine check error 890 * while still handling the mc error (i.e., before 891 * that CPU called "ibm,nmi-interlock") 892 */ 893 if (spapr->fwnmi_machine_check_interlock == cpu->vcpu_id) { 894 if (!recovered) { 895 error_report( 896 "FWNMI: Unable to deliver machine check to guest: nested machine check."); 897 qemu_system_guest_panicked(NULL); 898 } else { 899 warn_report( 900 "FWNMI: Unable to deliver machine check to guest: nested machine check. " 901 "Machine check recovered."); 902 } 903 return; 904 } 905 qemu_cond_wait_iothread(&spapr->fwnmi_machine_check_interlock_cond); 906 if (spapr->fwnmi_machine_check_addr == -1) { 907 /* 908 * If the machine was reset while waiting for the interlock, 909 * abort the delivery. The machine check applies to a context 910 * that no longer exists, so it wouldn't make sense to deliver 911 * it now. 912 */ 913 return; 914 } 915 } 916 917 ret = migrate_add_blocker(spapr->fwnmi_migration_blocker, &local_err); 918 if (ret == -EBUSY) { 919 /* 920 * We don't want to abort so we let the migration to continue. 921 * In a rare case, the machine check handler will run on the target. 922 * Though this is not preferable, it is better than aborting 923 * the migration or killing the VM. It is okay to call 924 * migrate_del_blocker on a blocker that was not added (which the 925 * nmi-interlock handler would do when it's called after this). 926 */ 927 warn_report("Received a fwnmi while migration was in progress"); 928 } 929 930 spapr_mce_dispatch_elog(cpu, recovered); 931 } 932 933 static void check_exception(PowerPCCPU *cpu, SpaprMachineState *spapr, 934 uint32_t token, uint32_t nargs, 935 target_ulong args, 936 uint32_t nret, target_ulong rets) 937 { 938 uint32_t mask, buf, len, event_len; 939 uint64_t xinfo; 940 SpaprEventLogEntry *event; 941 struct rtas_error_log header; 942 int i; 943 944 if ((nargs < 6) || (nargs > 7) || nret != 1) { 945 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 946 return; 947 } 948 949 xinfo = rtas_ld(args, 1); 950 mask = rtas_ld(args, 2); 951 buf = rtas_ld(args, 4); 952 len = rtas_ld(args, 5); 953 if (nargs == 7) { 954 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 955 } 956 957 event = rtas_event_log_dequeue(spapr, mask); 958 if (!event) { 959 goto out_no_events; 960 } 961 962 event_len = event->extended_length + sizeof(header); 963 964 if (event_len < len) { 965 len = event_len; 966 } 967 968 header.summary = cpu_to_be32(event->summary); 969 header.extended_length = cpu_to_be32(event->extended_length); 970 cpu_physical_memory_write(buf, &header, sizeof(header)); 971 cpu_physical_memory_write(buf + sizeof(header), event->extended_log, 972 event->extended_length); 973 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 974 g_free(event->extended_log); 975 g_free(event); 976 977 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 978 * there are still pending events to be fetched via check-exception. We 979 * do the latter here, since our code relies on edge-triggered 980 * interrupts. 981 */ 982 for (i = 0; i < EVENT_CLASS_MAX; i++) { 983 if (rtas_event_log_contains(EVENT_CLASS_MASK(i))) { 984 const SpaprEventSource *source = 985 spapr_event_sources_get_source(spapr->event_sources, i); 986 987 g_assert(source->enabled); 988 qemu_irq_pulse(spapr_qirq(spapr, source->irq)); 989 } 990 } 991 992 return; 993 994 out_no_events: 995 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 996 } 997 998 static void event_scan(PowerPCCPU *cpu, SpaprMachineState *spapr, 999 uint32_t token, uint32_t nargs, 1000 target_ulong args, 1001 uint32_t nret, target_ulong rets) 1002 { 1003 if (nargs != 4 || nret != 1) { 1004 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 1005 return; 1006 } 1007 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 1008 } 1009 1010 void spapr_clear_pending_events(SpaprMachineState *spapr) 1011 { 1012 SpaprEventLogEntry *entry = NULL, *next_entry; 1013 1014 QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) { 1015 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 1016 g_free(entry->extended_log); 1017 g_free(entry); 1018 } 1019 } 1020 1021 void spapr_clear_pending_hotplug_events(SpaprMachineState *spapr) 1022 { 1023 SpaprEventLogEntry *entry = NULL, *next_entry; 1024 1025 QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) { 1026 if (spapr_event_log_entry_type(entry) == RTAS_LOG_TYPE_HOTPLUG) { 1027 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 1028 g_free(entry->extended_log); 1029 g_free(entry); 1030 } 1031 } 1032 } 1033 1034 void spapr_events_init(SpaprMachineState *spapr) 1035 { 1036 int epow_irq = SPAPR_IRQ_EPOW; 1037 1038 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 1039 epow_irq = spapr_irq_findone(spapr, &error_fatal); 1040 } 1041 1042 spapr_irq_claim(spapr, epow_irq, false, &error_fatal); 1043 1044 QTAILQ_INIT(&spapr->pending_events); 1045 1046 spapr->event_sources = spapr_event_sources_new(); 1047 1048 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW, 1049 epow_irq); 1050 1051 /* NOTE: if machine supports modern/dedicated hotplug event source, 1052 * we add it to the device-tree unconditionally. This means we may 1053 * have cases where the source is enabled in QEMU, but unused by the 1054 * guest because it does not support modern hotplug events, so we 1055 * take care to rely on checking for negotiation of OV5_HP_EVT option 1056 * before attempting to use it to signal events, rather than simply 1057 * checking that it's enabled. 1058 */ 1059 if (spapr->use_hotplug_event_source) { 1060 int hp_irq = SPAPR_IRQ_HOTPLUG; 1061 1062 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 1063 hp_irq = spapr_irq_findone(spapr, &error_fatal); 1064 } 1065 1066 spapr_irq_claim(spapr, hp_irq, false, &error_fatal); 1067 1068 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG, 1069 hp_irq); 1070 } 1071 1072 spapr->epow_notifier.notify = spapr_powerdown_req; 1073 qemu_register_powerdown_notifier(&spapr->epow_notifier); 1074 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 1075 check_exception); 1076 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 1077 } 1078