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 "sysemu/char.h" 32 #include "hw/qdev.h" 33 #include "sysemu/device_tree.h" 34 35 #include "hw/ppc/fdt.h" 36 #include "hw/ppc/spapr.h" 37 #include "hw/ppc/spapr_vio.h" 38 #include "hw/pci/pci.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 "hw/ppc/spapr_ovec.h" 44 #include <libfdt.h> 45 46 struct rtas_error_log { 47 uint32_t summary; 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 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_log_full { 171 struct rtas_error_log hdr; 172 struct rtas_event_log_v6 v6hdr; 173 struct rtas_event_log_v6_maina maina; 174 struct rtas_event_log_v6_mainb mainb; 175 struct rtas_event_log_v6_epow epow; 176 } QEMU_PACKED; 177 178 union drc_identifier { 179 uint32_t index; 180 uint32_t count; 181 struct { 182 uint32_t count; 183 uint32_t index; 184 } count_indexed; 185 char name[1]; 186 } QEMU_PACKED; 187 188 struct rtas_event_log_v6_hp { 189 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */ 190 struct rtas_event_log_v6_section_header hdr; 191 uint8_t hotplug_type; 192 #define RTAS_LOG_V6_HP_TYPE_CPU 1 193 #define RTAS_LOG_V6_HP_TYPE_MEMORY 2 194 #define RTAS_LOG_V6_HP_TYPE_SLOT 3 195 #define RTAS_LOG_V6_HP_TYPE_PHB 4 196 #define RTAS_LOG_V6_HP_TYPE_PCI 5 197 uint8_t hotplug_action; 198 #define RTAS_LOG_V6_HP_ACTION_ADD 1 199 #define RTAS_LOG_V6_HP_ACTION_REMOVE 2 200 uint8_t hotplug_identifier; 201 #define RTAS_LOG_V6_HP_ID_DRC_NAME 1 202 #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2 203 #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3 204 #define RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED 4 205 uint8_t reserved; 206 union drc_identifier drc_id; 207 } QEMU_PACKED; 208 209 struct hp_log_full { 210 struct rtas_error_log hdr; 211 struct rtas_event_log_v6 v6hdr; 212 struct rtas_event_log_v6_maina maina; 213 struct rtas_event_log_v6_mainb mainb; 214 struct rtas_event_log_v6_hp hp; 215 } QEMU_PACKED; 216 217 typedef enum EventClass { 218 EVENT_CLASS_INTERNAL_ERRORS = 0, 219 EVENT_CLASS_EPOW = 1, 220 EVENT_CLASS_RESERVED = 2, 221 EVENT_CLASS_HOT_PLUG = 3, 222 EVENT_CLASS_IO = 4, 223 EVENT_CLASS_MAX 224 } EventClassIndex; 225 #define EVENT_CLASS_MASK(index) (1 << (31 - index)) 226 227 static const char * const event_names[EVENT_CLASS_MAX] = { 228 [EVENT_CLASS_INTERNAL_ERRORS] = "internal-errors", 229 [EVENT_CLASS_EPOW] = "epow-events", 230 [EVENT_CLASS_HOT_PLUG] = "hot-plug-events", 231 [EVENT_CLASS_IO] = "ibm,io-events", 232 }; 233 234 struct sPAPREventSource { 235 int irq; 236 uint32_t mask; 237 bool enabled; 238 }; 239 240 static sPAPREventSource *spapr_event_sources_new(void) 241 { 242 return g_new0(sPAPREventSource, EVENT_CLASS_MAX); 243 } 244 245 static void spapr_event_sources_register(sPAPREventSource *event_sources, 246 EventClassIndex index, int irq) 247 { 248 /* we only support 1 irq per event class at the moment */ 249 g_assert(event_sources); 250 g_assert(!event_sources[index].enabled); 251 event_sources[index].irq = irq; 252 event_sources[index].mask = EVENT_CLASS_MASK(index); 253 event_sources[index].enabled = true; 254 } 255 256 static const sPAPREventSource * 257 spapr_event_sources_get_source(sPAPREventSource *event_sources, 258 EventClassIndex index) 259 { 260 g_assert(index < EVENT_CLASS_MAX); 261 g_assert(event_sources); 262 263 return &event_sources[index]; 264 } 265 266 void spapr_dt_events(sPAPRMachineState *spapr, void *fdt) 267 { 268 uint32_t irq_ranges[EVENT_CLASS_MAX * 2]; 269 int i, count = 0, event_sources; 270 sPAPREventSource *events = spapr->event_sources; 271 272 g_assert(events); 273 274 _FDT(event_sources = fdt_add_subnode(fdt, 0, "event-sources")); 275 276 for (i = 0, count = 0; i < EVENT_CLASS_MAX; i++) { 277 int node_offset; 278 uint32_t interrupts[2]; 279 const sPAPREventSource *source = 280 spapr_event_sources_get_source(events, i); 281 const char *source_name = event_names[i]; 282 283 if (!source->enabled) { 284 continue; 285 } 286 287 interrupts[0] = cpu_to_be32(source->irq); 288 interrupts[1] = 0; 289 290 _FDT(node_offset = fdt_add_subnode(fdt, event_sources, source_name)); 291 _FDT(fdt_setprop(fdt, node_offset, "interrupts", interrupts, 292 sizeof(interrupts))); 293 294 irq_ranges[count++] = interrupts[0]; 295 irq_ranges[count++] = cpu_to_be32(1); 296 } 297 298 irq_ranges[count] = cpu_to_be32(count); 299 count++; 300 301 _FDT((fdt_setprop(fdt, event_sources, "interrupt-controller", NULL, 0))); 302 _FDT((fdt_setprop_cell(fdt, event_sources, "#interrupt-cells", 2))); 303 _FDT((fdt_setprop(fdt, event_sources, "interrupt-ranges", 304 irq_ranges, count * sizeof(uint32_t)))); 305 } 306 307 static const sPAPREventSource * 308 rtas_event_log_to_source(sPAPRMachineState *spapr, int log_type) 309 { 310 const sPAPREventSource *source; 311 312 g_assert(spapr->event_sources); 313 314 switch (log_type) { 315 case RTAS_LOG_TYPE_HOTPLUG: 316 source = spapr_event_sources_get_source(spapr->event_sources, 317 EVENT_CLASS_HOT_PLUG); 318 if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) { 319 g_assert(source->enabled); 320 break; 321 } 322 /* fall back to epow for legacy hotplug interrupt source */ 323 case RTAS_LOG_TYPE_EPOW: 324 source = spapr_event_sources_get_source(spapr->event_sources, 325 EVENT_CLASS_EPOW); 326 break; 327 default: 328 source = NULL; 329 } 330 331 return source; 332 } 333 334 static int rtas_event_log_to_irq(sPAPRMachineState *spapr, int log_type) 335 { 336 const sPAPREventSource *source; 337 338 source = rtas_event_log_to_source(spapr, log_type); 339 g_assert(source); 340 g_assert(source->enabled); 341 342 return source->irq; 343 } 344 345 static void rtas_event_log_queue(int log_type, void *data, bool exception) 346 { 347 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 348 sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1); 349 350 g_assert(data); 351 entry->log_type = log_type; 352 entry->exception = exception; 353 entry->data = data; 354 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); 355 } 356 357 static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask, 358 bool exception) 359 { 360 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 361 sPAPREventLogEntry *entry = NULL; 362 363 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 364 const sPAPREventSource *source = 365 rtas_event_log_to_source(spapr, entry->log_type); 366 367 if (entry->exception != exception) { 368 continue; 369 } 370 371 if (source->mask & event_mask) { 372 break; 373 } 374 } 375 376 if (entry) { 377 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 378 } 379 380 return entry; 381 } 382 383 static bool rtas_event_log_contains(uint32_t event_mask, bool exception) 384 { 385 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 386 sPAPREventLogEntry *entry = NULL; 387 388 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 389 const sPAPREventSource *source = 390 rtas_event_log_to_source(spapr, entry->log_type); 391 392 if (entry->exception != exception) { 393 continue; 394 } 395 396 if (source->mask & event_mask) { 397 return true; 398 } 399 } 400 401 return false; 402 } 403 404 static uint32_t next_plid; 405 406 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 407 { 408 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 409 | RTAS_LOG_V6_B0_BIGENDIAN; 410 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 411 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 412 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 413 } 414 415 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina, 416 int section_count) 417 { 418 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 419 struct tm tm; 420 int year; 421 422 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 423 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 424 /* FIXME: section version, subtype and creator id? */ 425 spapr_rtc_read(&spapr->rtc, &tm, NULL); 426 year = tm.tm_year + 1900; 427 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 428 | (to_bcd(year % 100) << 16) 429 | (to_bcd(tm.tm_mon + 1) << 8) 430 | to_bcd(tm.tm_mday)); 431 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 432 | (to_bcd(tm.tm_min) << 16) 433 | (to_bcd(tm.tm_sec) << 8)); 434 maina->creator_id = 'H'; /* Hypervisor */ 435 maina->section_count = section_count; 436 maina->plid = next_plid++; 437 } 438 439 static void spapr_powerdown_req(Notifier *n, void *opaque) 440 { 441 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 442 struct rtas_error_log *hdr; 443 struct rtas_event_log_v6 *v6hdr; 444 struct rtas_event_log_v6_maina *maina; 445 struct rtas_event_log_v6_mainb *mainb; 446 struct rtas_event_log_v6_epow *epow; 447 struct epow_log_full *new_epow; 448 449 new_epow = g_malloc0(sizeof(*new_epow)); 450 hdr = &new_epow->hdr; 451 v6hdr = &new_epow->v6hdr; 452 maina = &new_epow->maina; 453 mainb = &new_epow->mainb; 454 epow = &new_epow->epow; 455 456 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 457 | RTAS_LOG_SEVERITY_EVENT 458 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 459 | RTAS_LOG_OPTIONAL_PART_PRESENT 460 | RTAS_LOG_TYPE_EPOW); 461 hdr->extended_length = cpu_to_be32(sizeof(*new_epow) 462 - sizeof(new_epow->hdr)); 463 464 spapr_init_v6hdr(v6hdr); 465 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); 466 467 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 468 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 469 /* FIXME: section version, subtype and creator id? */ 470 mainb->subsystem_id = 0xa0; /* External environment */ 471 mainb->event_severity = 0x00; /* Informational / non-error */ 472 mainb->event_subtype = 0xd0; /* Normal shutdown */ 473 474 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 475 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 476 epow->hdr.section_version = 2; /* includes extended modifier */ 477 /* FIXME: section subtype and creator id? */ 478 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 479 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 480 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 481 482 rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true); 483 484 qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr), 485 rtas_event_log_to_irq(spapr, 486 RTAS_LOG_TYPE_EPOW))); 487 } 488 489 static void spapr_hotplug_set_signalled(uint32_t drc_index) 490 { 491 sPAPRDRConnector *drc = spapr_dr_connector_by_index(drc_index); 492 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 493 drck->set_signalled(drc); 494 } 495 496 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, 497 sPAPRDRConnectorType drc_type, 498 union drc_identifier *drc_id) 499 { 500 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 501 struct hp_log_full *new_hp; 502 struct rtas_error_log *hdr; 503 struct rtas_event_log_v6 *v6hdr; 504 struct rtas_event_log_v6_maina *maina; 505 struct rtas_event_log_v6_mainb *mainb; 506 struct rtas_event_log_v6_hp *hp; 507 508 new_hp = g_malloc0(sizeof(struct hp_log_full)); 509 hdr = &new_hp->hdr; 510 v6hdr = &new_hp->v6hdr; 511 maina = &new_hp->maina; 512 mainb = &new_hp->mainb; 513 hp = &new_hp->hp; 514 515 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 516 | RTAS_LOG_SEVERITY_EVENT 517 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 518 | RTAS_LOG_OPTIONAL_PART_PRESENT 519 | RTAS_LOG_INITIATOR_HOTPLUG 520 | RTAS_LOG_TYPE_HOTPLUG); 521 hdr->extended_length = cpu_to_be32(sizeof(*new_hp) 522 - sizeof(new_hp->hdr)); 523 524 spapr_init_v6hdr(v6hdr); 525 spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */); 526 527 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 528 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 529 mainb->subsystem_id = 0x80; /* External environment */ 530 mainb->event_severity = 0x00; /* Informational / non-error */ 531 mainb->event_subtype = 0x00; /* Normal shutdown */ 532 533 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG); 534 hp->hdr.section_length = cpu_to_be16(sizeof(*hp)); 535 hp->hdr.section_version = 1; /* includes extended modifier */ 536 hp->hotplug_action = hp_action; 537 hp->hotplug_identifier = hp_id; 538 539 switch (drc_type) { 540 case SPAPR_DR_CONNECTOR_TYPE_PCI: 541 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; 542 if (hp->hotplug_action == RTAS_LOG_V6_HP_ACTION_ADD) { 543 spapr_hotplug_set_signalled(drc_id->index); 544 } 545 break; 546 case SPAPR_DR_CONNECTOR_TYPE_LMB: 547 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 548 break; 549 case SPAPR_DR_CONNECTOR_TYPE_CPU: 550 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU; 551 break; 552 default: 553 /* we shouldn't be signaling hotplug events for resources 554 * that don't support them 555 */ 556 g_assert(false); 557 return; 558 } 559 560 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 561 hp->drc_id.count = cpu_to_be32(drc_id->count); 562 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 563 hp->drc_id.index = cpu_to_be32(drc_id->index); 564 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED) { 565 /* we should not be using count_indexed value unless the guest 566 * supports dedicated hotplug event source 567 */ 568 g_assert(spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)); 569 hp->drc_id.count_indexed.count = 570 cpu_to_be32(drc_id->count_indexed.count); 571 hp->drc_id.count_indexed.index = 572 cpu_to_be32(drc_id->count_indexed.index); 573 } 574 575 rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true); 576 577 qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr), 578 rtas_event_log_to_irq(spapr, 579 RTAS_LOG_TYPE_HOTPLUG))); 580 } 581 582 void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc) 583 { 584 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 585 sPAPRDRConnectorType drc_type = drck->get_type(drc); 586 union drc_identifier drc_id; 587 588 drc_id.index = drck->get_index(drc); 589 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 590 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 591 } 592 593 void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc) 594 { 595 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 596 sPAPRDRConnectorType drc_type = drck->get_type(drc); 597 union drc_identifier drc_id; 598 599 drc_id.index = drck->get_index(drc); 600 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 601 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 602 } 603 604 void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType drc_type, 605 uint32_t count) 606 { 607 union drc_identifier drc_id; 608 609 drc_id.count = count; 610 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 611 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 612 } 613 614 void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type, 615 uint32_t count) 616 { 617 union drc_identifier drc_id; 618 619 drc_id.count = count; 620 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 621 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 622 } 623 624 void spapr_hotplug_req_add_by_count_indexed(sPAPRDRConnectorType drc_type, 625 uint32_t count, uint32_t index) 626 { 627 union drc_identifier drc_id; 628 629 drc_id.count_indexed.count = count; 630 drc_id.count_indexed.index = index; 631 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 632 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id); 633 } 634 635 void spapr_hotplug_req_remove_by_count_indexed(sPAPRDRConnectorType drc_type, 636 uint32_t count, uint32_t index) 637 { 638 union drc_identifier drc_id; 639 640 drc_id.count_indexed.count = count; 641 drc_id.count_indexed.index = index; 642 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED, 643 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id); 644 } 645 646 static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, 647 uint32_t token, uint32_t nargs, 648 target_ulong args, 649 uint32_t nret, target_ulong rets) 650 { 651 uint32_t mask, buf, len, event_len; 652 uint64_t xinfo; 653 sPAPREventLogEntry *event; 654 struct rtas_error_log *hdr; 655 int i; 656 657 if ((nargs < 6) || (nargs > 7) || nret != 1) { 658 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 659 return; 660 } 661 662 xinfo = rtas_ld(args, 1); 663 mask = rtas_ld(args, 2); 664 buf = rtas_ld(args, 4); 665 len = rtas_ld(args, 5); 666 if (nargs == 7) { 667 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 668 } 669 670 event = rtas_event_log_dequeue(mask, true); 671 if (!event) { 672 goto out_no_events; 673 } 674 675 hdr = event->data; 676 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 677 678 if (event_len < len) { 679 len = event_len; 680 } 681 682 cpu_physical_memory_write(buf, event->data, len); 683 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 684 g_free(event->data); 685 g_free(event); 686 687 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 688 * there are still pending events to be fetched via check-exception. We 689 * do the latter here, since our code relies on edge-triggered 690 * interrupts. 691 */ 692 for (i = 0; i < EVENT_CLASS_MAX; i++) { 693 if (rtas_event_log_contains(EVENT_CLASS_MASK(i), true)) { 694 const sPAPREventSource *source = 695 spapr_event_sources_get_source(spapr->event_sources, i); 696 697 g_assert(source->enabled); 698 qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr), source->irq)); 699 } 700 } 701 702 return; 703 704 out_no_events: 705 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 706 } 707 708 static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr, 709 uint32_t token, uint32_t nargs, 710 target_ulong args, 711 uint32_t nret, target_ulong rets) 712 { 713 uint32_t mask, buf, len, event_len; 714 sPAPREventLogEntry *event; 715 struct rtas_error_log *hdr; 716 717 if (nargs != 4 || nret != 1) { 718 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 719 return; 720 } 721 722 mask = rtas_ld(args, 0); 723 buf = rtas_ld(args, 2); 724 len = rtas_ld(args, 3); 725 726 event = rtas_event_log_dequeue(mask, false); 727 if (!event) { 728 goto out_no_events; 729 } 730 731 hdr = event->data; 732 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 733 734 if (event_len < len) { 735 len = event_len; 736 } 737 738 cpu_physical_memory_write(buf, event->data, len); 739 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 740 g_free(event->data); 741 g_free(event); 742 return; 743 744 out_no_events: 745 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 746 } 747 748 void spapr_events_init(sPAPRMachineState *spapr) 749 { 750 QTAILQ_INIT(&spapr->pending_events); 751 752 spapr->event_sources = spapr_event_sources_new(); 753 754 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW, 755 spapr_ics_alloc(spapr->ics, 0, false, 756 &error_fatal)); 757 758 /* NOTE: if machine supports modern/dedicated hotplug event source, 759 * we add it to the device-tree unconditionally. This means we may 760 * have cases where the source is enabled in QEMU, but unused by the 761 * guest because it does not support modern hotplug events, so we 762 * take care to rely on checking for negotiation of OV5_HP_EVT option 763 * before attempting to use it to signal events, rather than simply 764 * checking that it's enabled. 765 */ 766 if (spapr->use_hotplug_event_source) { 767 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG, 768 spapr_ics_alloc(spapr->ics, 0, false, 769 &error_fatal)); 770 } 771 772 spapr->epow_notifier.notify = spapr_powerdown_req; 773 qemu_register_powerdown_notifier(&spapr->epow_notifier); 774 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 775 check_exception); 776 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 777 } 778