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 #include "qemu/osdep.h" 28 #include "qapi/error.h" 29 #include "cpu.h" 30 #include "sysemu/sysemu.h" 31 #include "hw/qdev.h" 32 #include "sysemu/device_tree.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/pci-host/spapr.h" 39 #include "hw/ppc/spapr_drc.h" 40 #include "qemu/help_option.h" 41 #include "qemu/bcd.h" 42 #include "hw/ppc/spapr_ovec.h" 43 #include <libfdt.h> 44 45 #define RTAS_LOG_VERSION_MASK 0xff000000 46 #define RTAS_LOG_VERSION_6 0x06000000 47 #define RTAS_LOG_SEVERITY_MASK 0x00e00000 48 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000 49 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000 50 #define RTAS_LOG_SEVERITY_ERROR 0x00800000 51 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000 52 #define RTAS_LOG_SEVERITY_WARNING 0x00400000 53 #define RTAS_LOG_SEVERITY_EVENT 0x00200000 54 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000 55 #define RTAS_LOG_DISPOSITION_MASK 0x00180000 56 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000 57 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000 58 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000 59 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000 60 #define RTAS_LOG_INITIATOR_MASK 0x0000f000 61 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000 62 #define RTAS_LOG_INITIATOR_CPU 0x00001000 63 #define RTAS_LOG_INITIATOR_PCI 0x00002000 64 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000 65 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000 66 #define RTAS_LOG_TARGET_MASK 0x00000f00 67 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000 68 #define RTAS_LOG_TARGET_CPU 0x00000100 69 #define RTAS_LOG_TARGET_PCI 0x00000200 70 #define RTAS_LOG_TARGET_MEMORY 0x00000400 71 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600 72 #define RTAS_LOG_TYPE_MASK 0x000000ff 73 #define RTAS_LOG_TYPE_OTHER 0x00000000 74 #define RTAS_LOG_TYPE_RETRY 0x00000001 75 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002 76 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003 77 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004 78 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005 79 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006 80 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007 81 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008 82 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009 83 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a 84 #define RTAS_LOG_TYPE_EPOW 0x00000040 85 #define RTAS_LOG_TYPE_HOTPLUG 0x000000e5 86 87 struct rtas_error_log { 88 uint32_t summary; 89 uint32_t extended_length; 90 } QEMU_PACKED; 91 92 struct rtas_event_log_v6 { 93 uint8_t b0; 94 #define RTAS_LOG_V6_B0_VALID 0x80 95 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40 96 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20 97 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10 98 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08 99 #define RTAS_LOG_V6_B0_NEW_LOG 0x04 100 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02 101 uint8_t _resv1; 102 uint8_t b2; 103 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80 104 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f 105 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e 106 uint8_t _resv2[9]; 107 uint32_t company; 108 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */ 109 } QEMU_PACKED; 110 111 struct rtas_event_log_v6_section_header { 112 uint16_t section_id; 113 uint16_t section_length; 114 uint8_t section_version; 115 uint8_t section_subtype; 116 uint16_t creator_component_id; 117 } QEMU_PACKED; 118 119 struct rtas_event_log_v6_maina { 120 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */ 121 struct rtas_event_log_v6_section_header hdr; 122 uint32_t creation_date; /* BCD: YYYYMMDD */ 123 uint32_t creation_time; /* BCD: HHMMSS00 */ 124 uint8_t _platform1[8]; 125 char creator_id; 126 uint8_t _resv1[2]; 127 uint8_t section_count; 128 uint8_t _resv2[4]; 129 uint8_t _platform2[8]; 130 uint32_t plid; 131 uint8_t _platform3[4]; 132 } QEMU_PACKED; 133 134 struct rtas_event_log_v6_mainb { 135 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */ 136 struct rtas_event_log_v6_section_header hdr; 137 uint8_t subsystem_id; 138 uint8_t _platform1; 139 uint8_t event_severity; 140 uint8_t event_subtype; 141 uint8_t _platform2[4]; 142 uint8_t _resv1[2]; 143 uint16_t action_flags; 144 uint8_t _resv2[4]; 145 } QEMU_PACKED; 146 147 struct rtas_event_log_v6_epow { 148 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */ 149 struct rtas_event_log_v6_section_header hdr; 150 uint8_t sensor_value; 151 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0 152 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1 153 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2 154 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3 155 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4 156 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5 157 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7 158 uint8_t event_modifier; 159 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1 160 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2 161 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3 162 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4 163 uint8_t extended_modifier; 164 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0 165 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1 166 uint8_t _resv; 167 uint64_t reason_code; 168 } QEMU_PACKED; 169 170 struct epow_extended_log { 171 struct rtas_event_log_v6 v6hdr; 172 struct rtas_event_log_v6_maina maina; 173 struct rtas_event_log_v6_mainb mainb; 174 struct rtas_event_log_v6_epow epow; 175 } QEMU_PACKED; 176 177 union drc_identifier { 178 uint32_t index; 179 uint32_t count; 180 struct { 181 uint32_t count; 182 uint32_t index; 183 } count_indexed; 184 char name[1]; 185 } QEMU_PACKED; 186 187 struct rtas_event_log_v6_hp { 188 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */ 189 struct rtas_event_log_v6_section_header hdr; 190 uint8_t hotplug_type; 191 #define RTAS_LOG_V6_HP_TYPE_CPU 1 192 #define RTAS_LOG_V6_HP_TYPE_MEMORY 2 193 #define RTAS_LOG_V6_HP_TYPE_SLOT 3 194 #define RTAS_LOG_V6_HP_TYPE_PHB 4 195 #define RTAS_LOG_V6_HP_TYPE_PCI 5 196 uint8_t hotplug_action; 197 #define RTAS_LOG_V6_HP_ACTION_ADD 1 198 #define RTAS_LOG_V6_HP_ACTION_REMOVE 2 199 uint8_t hotplug_identifier; 200 #define RTAS_LOG_V6_HP_ID_DRC_NAME 1 201 #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2 202 #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3 203 #define RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED 4 204 uint8_t reserved; 205 union drc_identifier drc_id; 206 } QEMU_PACKED; 207 208 struct hp_extended_log { 209 struct rtas_event_log_v6 v6hdr; 210 struct rtas_event_log_v6_maina maina; 211 struct rtas_event_log_v6_mainb mainb; 212 struct rtas_event_log_v6_hp hp; 213 } QEMU_PACKED; 214 215 typedef enum EventClass { 216 EVENT_CLASS_INTERNAL_ERRORS = 0, 217 EVENT_CLASS_EPOW = 1, 218 EVENT_CLASS_RESERVED = 2, 219 EVENT_CLASS_HOT_PLUG = 3, 220 EVENT_CLASS_IO = 4, 221 EVENT_CLASS_MAX 222 } EventClassIndex; 223 #define EVENT_CLASS_MASK(index) (1 << (31 - index)) 224 225 static const char * const event_names[EVENT_CLASS_MAX] = { 226 [EVENT_CLASS_INTERNAL_ERRORS] = "internal-errors", 227 [EVENT_CLASS_EPOW] = "epow-events", 228 [EVENT_CLASS_HOT_PLUG] = "hot-plug-events", 229 [EVENT_CLASS_IO] = "ibm,io-events", 230 }; 231 232 struct sPAPREventSource { 233 int irq; 234 uint32_t mask; 235 bool enabled; 236 }; 237 238 static sPAPREventSource *spapr_event_sources_new(void) 239 { 240 return g_new0(sPAPREventSource, EVENT_CLASS_MAX); 241 } 242 243 static void spapr_event_sources_register(sPAPREventSource *event_sources, 244 EventClassIndex index, int irq) 245 { 246 /* we only support 1 irq per event class at the moment */ 247 g_assert(event_sources); 248 g_assert(!event_sources[index].enabled); 249 event_sources[index].irq = irq; 250 event_sources[index].mask = EVENT_CLASS_MASK(index); 251 event_sources[index].enabled = true; 252 } 253 254 static const sPAPREventSource * 255 spapr_event_sources_get_source(sPAPREventSource *event_sources, 256 EventClassIndex index) 257 { 258 g_assert(index < EVENT_CLASS_MAX); 259 g_assert(event_sources); 260 261 return &event_sources[index]; 262 } 263 264 void spapr_dt_events(sPAPRMachineState *spapr, void *fdt) 265 { 266 uint32_t irq_ranges[EVENT_CLASS_MAX * 2]; 267 int i, count = 0, event_sources; 268 sPAPREventSource *events = spapr->event_sources; 269 270 g_assert(events); 271 272 _FDT(event_sources = fdt_add_subnode(fdt, 0, "event-sources")); 273 274 for (i = 0, count = 0; i < EVENT_CLASS_MAX; i++) { 275 int node_offset; 276 uint32_t interrupts[2]; 277 const sPAPREventSource *source = 278 spapr_event_sources_get_source(events, i); 279 const char *source_name = event_names[i]; 280 281 if (!source->enabled) { 282 continue; 283 } 284 285 spapr_dt_xics_irq(interrupts, source->irq, false); 286 287 _FDT(node_offset = fdt_add_subnode(fdt, event_sources, source_name)); 288 _FDT(fdt_setprop(fdt, node_offset, "interrupts", interrupts, 289 sizeof(interrupts))); 290 291 irq_ranges[count++] = interrupts[0]; 292 irq_ranges[count++] = cpu_to_be32(1); 293 } 294 295 _FDT((fdt_setprop(fdt, event_sources, "interrupt-controller", NULL, 0))); 296 _FDT((fdt_setprop_cell(fdt, event_sources, "#interrupt-cells", 2))); 297 _FDT((fdt_setprop(fdt, event_sources, "interrupt-ranges", 298 irq_ranges, count * sizeof(uint32_t)))); 299 } 300 301 static const sPAPREventSource * 302 rtas_event_log_to_source(sPAPRMachineState *spapr, int log_type) 303 { 304 const sPAPREventSource *source; 305 306 g_assert(spapr->event_sources); 307 308 switch (log_type) { 309 case RTAS_LOG_TYPE_HOTPLUG: 310 source = spapr_event_sources_get_source(spapr->event_sources, 311 EVENT_CLASS_HOT_PLUG); 312 if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) { 313 g_assert(source->enabled); 314 break; 315 } 316 /* fall back to epow for legacy hotplug interrupt source */ 317 case RTAS_LOG_TYPE_EPOW: 318 source = spapr_event_sources_get_source(spapr->event_sources, 319 EVENT_CLASS_EPOW); 320 break; 321 default: 322 source = NULL; 323 } 324 325 return source; 326 } 327 328 static int rtas_event_log_to_irq(sPAPRMachineState *spapr, int log_type) 329 { 330 const sPAPREventSource *source; 331 332 source = rtas_event_log_to_source(spapr, log_type); 333 g_assert(source); 334 g_assert(source->enabled); 335 336 return source->irq; 337 } 338 339 static uint32_t spapr_event_log_entry_type(sPAPREventLogEntry *entry) 340 { 341 return entry->summary & RTAS_LOG_TYPE_MASK; 342 } 343 344 static void rtas_event_log_queue(sPAPRMachineState *spapr, 345 sPAPREventLogEntry *entry) 346 { 347 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); 348 } 349 350 static sPAPREventLogEntry *rtas_event_log_dequeue(sPAPRMachineState *spapr, 351 uint32_t event_mask) 352 { 353 sPAPREventLogEntry *entry = NULL; 354 355 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 356 const sPAPREventSource *source = 357 rtas_event_log_to_source(spapr, 358 spapr_event_log_entry_type(entry)); 359 360 if (source->mask & event_mask) { 361 break; 362 } 363 } 364 365 if (entry) { 366 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 367 } 368 369 return entry; 370 } 371 372 static bool rtas_event_log_contains(uint32_t event_mask) 373 { 374 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 375 sPAPREventLogEntry *entry = NULL; 376 377 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 378 const sPAPREventSource *source = 379 rtas_event_log_to_source(spapr, 380 spapr_event_log_entry_type(entry)); 381 382 if (source->mask & event_mask) { 383 return true; 384 } 385 } 386 387 return false; 388 } 389 390 static uint32_t next_plid; 391 392 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 393 { 394 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 395 | RTAS_LOG_V6_B0_BIGENDIAN; 396 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 397 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 398 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 399 } 400 401 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina, 402 int section_count) 403 { 404 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 405 struct tm tm; 406 int year; 407 408 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 409 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 410 /* FIXME: section version, subtype and creator id? */ 411 spapr_rtc_read(&spapr->rtc, &tm, NULL); 412 year = tm.tm_year + 1900; 413 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 414 | (to_bcd(year % 100) << 16) 415 | (to_bcd(tm.tm_mon + 1) << 8) 416 | to_bcd(tm.tm_mday)); 417 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 418 | (to_bcd(tm.tm_min) << 16) 419 | (to_bcd(tm.tm_sec) << 8)); 420 maina->creator_id = 'H'; /* Hypervisor */ 421 maina->section_count = section_count; 422 maina->plid = next_plid++; 423 } 424 425 static void spapr_powerdown_req(Notifier *n, void *opaque) 426 { 427 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 428 sPAPREventLogEntry *entry; 429 struct rtas_event_log_v6 *v6hdr; 430 struct rtas_event_log_v6_maina *maina; 431 struct rtas_event_log_v6_mainb *mainb; 432 struct rtas_event_log_v6_epow *epow; 433 struct epow_extended_log *new_epow; 434 435 entry = g_new(sPAPREventLogEntry, 1); 436 new_epow = g_malloc0(sizeof(*new_epow)); 437 entry->extended_log = new_epow; 438 439 v6hdr = &new_epow->v6hdr; 440 maina = &new_epow->maina; 441 mainb = &new_epow->mainb; 442 epow = &new_epow->epow; 443 444 entry->summary = RTAS_LOG_VERSION_6 445 | RTAS_LOG_SEVERITY_EVENT 446 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 447 | RTAS_LOG_OPTIONAL_PART_PRESENT 448 | RTAS_LOG_TYPE_EPOW; 449 entry->extended_length = sizeof(*new_epow); 450 451 spapr_init_v6hdr(v6hdr); 452 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); 453 454 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 455 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 456 /* FIXME: section version, subtype and creator id? */ 457 mainb->subsystem_id = 0xa0; /* External environment */ 458 mainb->event_severity = 0x00; /* Informational / non-error */ 459 mainb->event_subtype = 0xd0; /* Normal shutdown */ 460 461 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 462 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 463 epow->hdr.section_version = 2; /* includes extended modifier */ 464 /* FIXME: section subtype and creator id? */ 465 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 466 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 467 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 468 469 rtas_event_log_queue(spapr, entry); 470 471 qemu_irq_pulse(spapr_qirq(spapr, 472 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_EPOW))); 473 } 474 475 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, 476 sPAPRDRConnectorType drc_type, 477 union drc_identifier *drc_id) 478 { 479 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 480 sPAPREventLogEntry *entry; 481 struct hp_extended_log *new_hp; 482 struct rtas_event_log_v6 *v6hdr; 483 struct rtas_event_log_v6_maina *maina; 484 struct rtas_event_log_v6_mainb *mainb; 485 struct rtas_event_log_v6_hp *hp; 486 487 entry = g_new(sPAPREventLogEntry, 1); 488 new_hp = g_malloc0(sizeof(struct hp_extended_log)); 489 entry->extended_log = new_hp; 490 491 v6hdr = &new_hp->v6hdr; 492 maina = &new_hp->maina; 493 mainb = &new_hp->mainb; 494 hp = &new_hp->hp; 495 496 entry->summary = RTAS_LOG_VERSION_6 497 | RTAS_LOG_SEVERITY_EVENT 498 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 499 | RTAS_LOG_OPTIONAL_PART_PRESENT 500 | RTAS_LOG_INITIATOR_HOTPLUG 501 | RTAS_LOG_TYPE_HOTPLUG; 502 entry->extended_length = sizeof(*new_hp); 503 504 spapr_init_v6hdr(v6hdr); 505 spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */); 506 507 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 508 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 509 mainb->subsystem_id = 0x80; /* External environment */ 510 mainb->event_severity = 0x00; /* Informational / non-error */ 511 mainb->event_subtype = 0x00; /* Normal shutdown */ 512 513 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG); 514 hp->hdr.section_length = cpu_to_be16(sizeof(*hp)); 515 hp->hdr.section_version = 1; /* includes extended modifier */ 516 hp->hotplug_action = hp_action; 517 hp->hotplug_identifier = hp_id; 518 519 switch (drc_type) { 520 case SPAPR_DR_CONNECTOR_TYPE_PCI: 521 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; 522 break; 523 case SPAPR_DR_CONNECTOR_TYPE_LMB: 524 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 525 break; 526 case SPAPR_DR_CONNECTOR_TYPE_CPU: 527 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU; 528 break; 529 default: 530 /* we shouldn't be signaling hotplug events for resources 531 * that don't support them 532 */ 533 g_assert(false); 534 return; 535 } 536 537 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 538 hp->drc_id.count = cpu_to_be32(drc_id->count); 539 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 540 hp->drc_id.index = cpu_to_be32(drc_id->index); 541 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED) { 542 /* we should not be using count_indexed value unless the guest 543 * supports dedicated hotplug event source 544 */ 545 g_assert(spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)); 546 hp->drc_id.count_indexed.count = 547 cpu_to_be32(drc_id->count_indexed.count); 548 hp->drc_id.count_indexed.index = 549 cpu_to_be32(drc_id->count_indexed.index); 550 } 551 552 rtas_event_log_queue(spapr, entry); 553 554 qemu_irq_pulse(spapr_qirq(spapr, 555 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_HOTPLUG))); 556 } 557 558 void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc) 559 { 560 sPAPRDRConnectorType drc_type = spapr_drc_type(drc); 561 union drc_identifier drc_id; 562 563 drc_id.index = spapr_drc_index(drc); 564 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 565 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 566 } 567 568 void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc) 569 { 570 sPAPRDRConnectorType drc_type = spapr_drc_type(drc); 571 union drc_identifier drc_id; 572 573 drc_id.index = spapr_drc_index(drc); 574 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 575 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 576 } 577 578 void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType drc_type, 579 uint32_t count) 580 { 581 union drc_identifier drc_id; 582 583 drc_id.count = count; 584 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 585 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 586 } 587 588 void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type, 589 uint32_t count) 590 { 591 union drc_identifier drc_id; 592 593 drc_id.count = count; 594 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 595 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 596 } 597 598 void spapr_hotplug_req_add_by_count_indexed(sPAPRDRConnectorType drc_type, 599 uint32_t count, uint32_t index) 600 { 601 union drc_identifier drc_id; 602 603 drc_id.count_indexed.count = count; 604 drc_id.count_indexed.index = index; 605 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 606 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 607 } 608 609 void spapr_hotplug_req_remove_by_count_indexed(sPAPRDRConnectorType drc_type, 610 uint32_t count, uint32_t index) 611 { 612 union drc_identifier drc_id; 613 614 drc_id.count_indexed.count = count; 615 drc_id.count_indexed.index = index; 616 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 617 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 618 } 619 620 static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, 621 uint32_t token, uint32_t nargs, 622 target_ulong args, 623 uint32_t nret, target_ulong rets) 624 { 625 uint32_t mask, buf, len, event_len; 626 uint64_t xinfo; 627 sPAPREventLogEntry *event; 628 struct rtas_error_log header; 629 int i; 630 631 if ((nargs < 6) || (nargs > 7) || nret != 1) { 632 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 633 return; 634 } 635 636 xinfo = rtas_ld(args, 1); 637 mask = rtas_ld(args, 2); 638 buf = rtas_ld(args, 4); 639 len = rtas_ld(args, 5); 640 if (nargs == 7) { 641 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 642 } 643 644 event = rtas_event_log_dequeue(spapr, mask); 645 if (!event) { 646 goto out_no_events; 647 } 648 649 event_len = event->extended_length + sizeof(header); 650 651 if (event_len < len) { 652 len = event_len; 653 } 654 655 header.summary = cpu_to_be32(event->summary); 656 header.extended_length = cpu_to_be32(event->extended_length); 657 cpu_physical_memory_write(buf, &header, sizeof(header)); 658 cpu_physical_memory_write(buf + sizeof(header), event->extended_log, 659 event->extended_length); 660 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 661 g_free(event->extended_log); 662 g_free(event); 663 664 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 665 * there are still pending events to be fetched via check-exception. We 666 * do the latter here, since our code relies on edge-triggered 667 * interrupts. 668 */ 669 for (i = 0; i < EVENT_CLASS_MAX; i++) { 670 if (rtas_event_log_contains(EVENT_CLASS_MASK(i))) { 671 const sPAPREventSource *source = 672 spapr_event_sources_get_source(spapr->event_sources, i); 673 674 g_assert(source->enabled); 675 qemu_irq_pulse(spapr_qirq(spapr, source->irq)); 676 } 677 } 678 679 return; 680 681 out_no_events: 682 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 683 } 684 685 static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr, 686 uint32_t token, uint32_t nargs, 687 target_ulong args, 688 uint32_t nret, target_ulong rets) 689 { 690 if (nargs != 4 || nret != 1) { 691 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 692 return; 693 } 694 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 695 } 696 697 void spapr_clear_pending_events(sPAPRMachineState *spapr) 698 { 699 sPAPREventLogEntry *entry = NULL, *next_entry; 700 701 QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) { 702 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 703 g_free(entry->extended_log); 704 g_free(entry); 705 } 706 } 707 708 void spapr_events_init(sPAPRMachineState *spapr) 709 { 710 int epow_irq = SPAPR_IRQ_EPOW; 711 712 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 713 epow_irq = spapr_irq_findone(spapr, &error_fatal); 714 } 715 716 spapr_irq_claim(spapr, epow_irq, false, &error_fatal); 717 718 QTAILQ_INIT(&spapr->pending_events); 719 720 spapr->event_sources = spapr_event_sources_new(); 721 722 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW, 723 epow_irq); 724 725 /* NOTE: if machine supports modern/dedicated hotplug event source, 726 * we add it to the device-tree unconditionally. This means we may 727 * have cases where the source is enabled in QEMU, but unused by the 728 * guest because it does not support modern hotplug events, so we 729 * take care to rely on checking for negotiation of OV5_HP_EVT option 730 * before attempting to use it to signal events, rather than simply 731 * checking that it's enabled. 732 */ 733 if (spapr->use_hotplug_event_source) { 734 int hp_irq = SPAPR_IRQ_HOTPLUG; 735 736 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) { 737 hp_irq = spapr_irq_findone(spapr, &error_fatal); 738 } 739 740 spapr_irq_claim(spapr, hp_irq, false, &error_fatal); 741 742 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG, 743 hp_irq); 744 } 745 746 spapr->epow_notifier.notify = spapr_powerdown_req; 747 qemu_register_powerdown_notifier(&spapr->epow_notifier); 748 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 749 check_exception); 750 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 751 } 752