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 "cpu.h" 28 #include "sysemu/sysemu.h" 29 #include "sysemu/char.h" 30 #include "hw/qdev.h" 31 #include "sysemu/device_tree.h" 32 33 #include "hw/ppc/spapr.h" 34 #include "hw/ppc/spapr_vio.h" 35 #include "hw/pci/pci.h" 36 #include "hw/pci-host/spapr.h" 37 #include "hw/ppc/spapr_drc.h" 38 39 #include <libfdt.h> 40 41 struct rtas_error_log { 42 uint32_t summary; 43 #define RTAS_LOG_VERSION_MASK 0xff000000 44 #define RTAS_LOG_VERSION_6 0x06000000 45 #define RTAS_LOG_SEVERITY_MASK 0x00e00000 46 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000 47 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000 48 #define RTAS_LOG_SEVERITY_ERROR 0x00800000 49 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000 50 #define RTAS_LOG_SEVERITY_WARNING 0x00400000 51 #define RTAS_LOG_SEVERITY_EVENT 0x00200000 52 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000 53 #define RTAS_LOG_DISPOSITION_MASK 0x00180000 54 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000 55 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000 56 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000 57 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000 58 #define RTAS_LOG_INITIATOR_MASK 0x0000f000 59 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000 60 #define RTAS_LOG_INITIATOR_CPU 0x00001000 61 #define RTAS_LOG_INITIATOR_PCI 0x00002000 62 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000 63 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000 64 #define RTAS_LOG_TARGET_MASK 0x00000f00 65 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000 66 #define RTAS_LOG_TARGET_CPU 0x00000100 67 #define RTAS_LOG_TARGET_PCI 0x00000200 68 #define RTAS_LOG_TARGET_MEMORY 0x00000400 69 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600 70 #define RTAS_LOG_TYPE_MASK 0x000000ff 71 #define RTAS_LOG_TYPE_OTHER 0x00000000 72 #define RTAS_LOG_TYPE_RETRY 0x00000001 73 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002 74 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003 75 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004 76 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005 77 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006 78 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007 79 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008 80 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009 81 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a 82 #define RTAS_LOG_TYPE_EPOW 0x00000040 83 #define RTAS_LOG_TYPE_HOTPLUG 0x000000e5 84 uint32_t extended_length; 85 } QEMU_PACKED; 86 87 struct rtas_event_log_v6 { 88 uint8_t b0; 89 #define RTAS_LOG_V6_B0_VALID 0x80 90 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40 91 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20 92 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10 93 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08 94 #define RTAS_LOG_V6_B0_NEW_LOG 0x04 95 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02 96 uint8_t _resv1; 97 uint8_t b2; 98 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80 99 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f 100 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e 101 uint8_t _resv2[9]; 102 uint32_t company; 103 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */ 104 } QEMU_PACKED; 105 106 struct rtas_event_log_v6_section_header { 107 uint16_t section_id; 108 uint16_t section_length; 109 uint8_t section_version; 110 uint8_t section_subtype; 111 uint16_t creator_component_id; 112 } QEMU_PACKED; 113 114 struct rtas_event_log_v6_maina { 115 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */ 116 struct rtas_event_log_v6_section_header hdr; 117 uint32_t creation_date; /* BCD: YYYYMMDD */ 118 uint32_t creation_time; /* BCD: HHMMSS00 */ 119 uint8_t _platform1[8]; 120 char creator_id; 121 uint8_t _resv1[2]; 122 uint8_t section_count; 123 uint8_t _resv2[4]; 124 uint8_t _platform2[8]; 125 uint32_t plid; 126 uint8_t _platform3[4]; 127 } QEMU_PACKED; 128 129 struct rtas_event_log_v6_mainb { 130 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */ 131 struct rtas_event_log_v6_section_header hdr; 132 uint8_t subsystem_id; 133 uint8_t _platform1; 134 uint8_t event_severity; 135 uint8_t event_subtype; 136 uint8_t _platform2[4]; 137 uint8_t _resv1[2]; 138 uint16_t action_flags; 139 uint8_t _resv2[4]; 140 } QEMU_PACKED; 141 142 struct rtas_event_log_v6_epow { 143 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */ 144 struct rtas_event_log_v6_section_header hdr; 145 uint8_t sensor_value; 146 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0 147 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1 148 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2 149 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3 150 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4 151 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5 152 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7 153 uint8_t event_modifier; 154 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1 155 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2 156 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3 157 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4 158 uint8_t extended_modifier; 159 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0 160 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1 161 uint8_t _resv; 162 uint64_t reason_code; 163 } QEMU_PACKED; 164 165 struct epow_log_full { 166 struct rtas_error_log hdr; 167 struct rtas_event_log_v6 v6hdr; 168 struct rtas_event_log_v6_maina maina; 169 struct rtas_event_log_v6_mainb mainb; 170 struct rtas_event_log_v6_epow epow; 171 } QEMU_PACKED; 172 173 struct rtas_event_log_v6_hp { 174 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */ 175 struct rtas_event_log_v6_section_header hdr; 176 uint8_t hotplug_type; 177 #define RTAS_LOG_V6_HP_TYPE_CPU 1 178 #define RTAS_LOG_V6_HP_TYPE_MEMORY 2 179 #define RTAS_LOG_V6_HP_TYPE_SLOT 3 180 #define RTAS_LOG_V6_HP_TYPE_PHB 4 181 #define RTAS_LOG_V6_HP_TYPE_PCI 5 182 uint8_t hotplug_action; 183 #define RTAS_LOG_V6_HP_ACTION_ADD 1 184 #define RTAS_LOG_V6_HP_ACTION_REMOVE 2 185 uint8_t hotplug_identifier; 186 #define RTAS_LOG_V6_HP_ID_DRC_NAME 1 187 #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2 188 #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3 189 uint8_t reserved; 190 union { 191 uint32_t index; 192 uint32_t count; 193 char name[1]; 194 } drc; 195 } QEMU_PACKED; 196 197 struct hp_log_full { 198 struct rtas_error_log hdr; 199 struct rtas_event_log_v6 v6hdr; 200 struct rtas_event_log_v6_maina maina; 201 struct rtas_event_log_v6_mainb mainb; 202 struct rtas_event_log_v6_hp hp; 203 } QEMU_PACKED; 204 205 #define EVENT_MASK_INTERNAL_ERRORS 0x80000000 206 #define EVENT_MASK_EPOW 0x40000000 207 #define EVENT_MASK_HOTPLUG 0x10000000 208 #define EVENT_MASK_IO 0x08000000 209 210 #define _FDT(exp) \ 211 do { \ 212 int ret = (exp); \ 213 if (ret < 0) { \ 214 fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \ 215 #exp, fdt_strerror(ret)); \ 216 exit(1); \ 217 } \ 218 } while (0) 219 220 void spapr_events_fdt_skel(void *fdt, uint32_t check_exception_irq) 221 { 222 uint32_t irq_ranges[] = {cpu_to_be32(check_exception_irq), cpu_to_be32(1)}; 223 uint32_t interrupts[] = {cpu_to_be32(check_exception_irq), 0}; 224 225 _FDT((fdt_begin_node(fdt, "event-sources"))); 226 227 _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0))); 228 _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2))); 229 _FDT((fdt_property(fdt, "interrupt-ranges", 230 irq_ranges, sizeof(irq_ranges)))); 231 232 _FDT((fdt_begin_node(fdt, "epow-events"))); 233 _FDT((fdt_property(fdt, "interrupts", interrupts, sizeof(interrupts)))); 234 _FDT((fdt_end_node(fdt))); 235 236 _FDT((fdt_end_node(fdt))); 237 } 238 239 static void rtas_event_log_queue(int log_type, void *data, bool exception) 240 { 241 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 242 sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1); 243 244 g_assert(data); 245 entry->log_type = log_type; 246 entry->exception = exception; 247 entry->data = data; 248 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); 249 } 250 251 static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask, 252 bool exception) 253 { 254 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 255 sPAPREventLogEntry *entry = NULL; 256 257 /* we only queue EPOW events atm. */ 258 if ((event_mask & EVENT_MASK_EPOW) == 0) { 259 return NULL; 260 } 261 262 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 263 if (entry->exception != exception) { 264 continue; 265 } 266 267 /* EPOW and hotplug events are surfaced in the same manner */ 268 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 269 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 270 break; 271 } 272 } 273 274 if (entry) { 275 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 276 } 277 278 return entry; 279 } 280 281 static bool rtas_event_log_contains(uint32_t event_mask, bool exception) 282 { 283 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 284 sPAPREventLogEntry *entry = NULL; 285 286 /* we only queue EPOW events atm. */ 287 if ((event_mask & EVENT_MASK_EPOW) == 0) { 288 return false; 289 } 290 291 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 292 if (entry->exception != exception) { 293 continue; 294 } 295 296 /* EPOW and hotplug events are surfaced in the same manner */ 297 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 298 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 299 return true; 300 } 301 } 302 303 return false; 304 } 305 306 static uint32_t next_plid; 307 308 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 309 { 310 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 311 | RTAS_LOG_V6_B0_BIGENDIAN; 312 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 313 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 314 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 315 } 316 317 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina, 318 int section_count) 319 { 320 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 321 struct tm tm; 322 int year; 323 324 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 325 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 326 /* FIXME: section version, subtype and creator id? */ 327 spapr_rtc_read(spapr->rtc, &tm, NULL); 328 year = tm.tm_year + 1900; 329 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 330 | (to_bcd(year % 100) << 16) 331 | (to_bcd(tm.tm_mon + 1) << 8) 332 | to_bcd(tm.tm_mday)); 333 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 334 | (to_bcd(tm.tm_min) << 16) 335 | (to_bcd(tm.tm_sec) << 8)); 336 maina->creator_id = 'H'; /* Hypervisor */ 337 maina->section_count = section_count; 338 maina->plid = next_plid++; 339 } 340 341 static void spapr_powerdown_req(Notifier *n, void *opaque) 342 { 343 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 344 struct rtas_error_log *hdr; 345 struct rtas_event_log_v6 *v6hdr; 346 struct rtas_event_log_v6_maina *maina; 347 struct rtas_event_log_v6_mainb *mainb; 348 struct rtas_event_log_v6_epow *epow; 349 struct epow_log_full *new_epow; 350 351 new_epow = g_malloc0(sizeof(*new_epow)); 352 hdr = &new_epow->hdr; 353 v6hdr = &new_epow->v6hdr; 354 maina = &new_epow->maina; 355 mainb = &new_epow->mainb; 356 epow = &new_epow->epow; 357 358 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 359 | RTAS_LOG_SEVERITY_EVENT 360 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 361 | RTAS_LOG_OPTIONAL_PART_PRESENT 362 | RTAS_LOG_TYPE_EPOW); 363 hdr->extended_length = cpu_to_be32(sizeof(*new_epow) 364 - sizeof(new_epow->hdr)); 365 366 spapr_init_v6hdr(v6hdr); 367 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); 368 369 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 370 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 371 /* FIXME: section version, subtype and creator id? */ 372 mainb->subsystem_id = 0xa0; /* External environment */ 373 mainb->event_severity = 0x00; /* Informational / non-error */ 374 mainb->event_subtype = 0xd0; /* Normal shutdown */ 375 376 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 377 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 378 epow->hdr.section_version = 2; /* includes extended modifier */ 379 /* FIXME: section subtype and creator id? */ 380 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 381 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 382 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 383 384 rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true); 385 386 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); 387 } 388 389 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, 390 sPAPRDRConnectorType drc_type, 391 uint32_t drc) 392 { 393 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 394 struct hp_log_full *new_hp; 395 struct rtas_error_log *hdr; 396 struct rtas_event_log_v6 *v6hdr; 397 struct rtas_event_log_v6_maina *maina; 398 struct rtas_event_log_v6_mainb *mainb; 399 struct rtas_event_log_v6_hp *hp; 400 401 new_hp = g_malloc0(sizeof(struct hp_log_full)); 402 hdr = &new_hp->hdr; 403 v6hdr = &new_hp->v6hdr; 404 maina = &new_hp->maina; 405 mainb = &new_hp->mainb; 406 hp = &new_hp->hp; 407 408 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 409 | RTAS_LOG_SEVERITY_EVENT 410 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 411 | RTAS_LOG_OPTIONAL_PART_PRESENT 412 | RTAS_LOG_INITIATOR_HOTPLUG 413 | RTAS_LOG_TYPE_HOTPLUG); 414 hdr->extended_length = cpu_to_be32(sizeof(*new_hp) 415 - sizeof(new_hp->hdr)); 416 417 spapr_init_v6hdr(v6hdr); 418 spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */); 419 420 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 421 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 422 mainb->subsystem_id = 0x80; /* External environment */ 423 mainb->event_severity = 0x00; /* Informational / non-error */ 424 mainb->event_subtype = 0x00; /* Normal shutdown */ 425 426 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG); 427 hp->hdr.section_length = cpu_to_be16(sizeof(*hp)); 428 hp->hdr.section_version = 1; /* includes extended modifier */ 429 hp->hotplug_action = hp_action; 430 hp->hotplug_identifier = hp_id; 431 432 switch (drc_type) { 433 case SPAPR_DR_CONNECTOR_TYPE_PCI: 434 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; 435 break; 436 case SPAPR_DR_CONNECTOR_TYPE_LMB: 437 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 438 break; 439 default: 440 /* we shouldn't be signaling hotplug events for resources 441 * that don't support them 442 */ 443 g_assert(false); 444 return; 445 } 446 447 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 448 hp->drc.count = cpu_to_be32(drc); 449 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 450 hp->drc.index = cpu_to_be32(drc); 451 } 452 453 rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true); 454 455 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); 456 } 457 458 void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc) 459 { 460 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 461 sPAPRDRConnectorType drc_type = drck->get_type(drc); 462 uint32_t index = drck->get_index(drc); 463 464 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 465 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, index); 466 } 467 468 void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc) 469 { 470 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 471 sPAPRDRConnectorType drc_type = drck->get_type(drc); 472 uint32_t index = drck->get_index(drc); 473 474 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 475 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, index); 476 } 477 478 void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType drc_type, 479 uint32_t count) 480 { 481 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 482 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, count); 483 } 484 485 void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type, 486 uint32_t count) 487 { 488 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 489 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, count); 490 } 491 492 static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, 493 uint32_t token, uint32_t nargs, 494 target_ulong args, 495 uint32_t nret, target_ulong rets) 496 { 497 uint32_t mask, buf, len, event_len; 498 uint64_t xinfo; 499 sPAPREventLogEntry *event; 500 struct rtas_error_log *hdr; 501 502 if ((nargs < 6) || (nargs > 7) || nret != 1) { 503 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 504 return; 505 } 506 507 xinfo = rtas_ld(args, 1); 508 mask = rtas_ld(args, 2); 509 buf = rtas_ld(args, 4); 510 len = rtas_ld(args, 5); 511 if (nargs == 7) { 512 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 513 } 514 515 event = rtas_event_log_dequeue(mask, true); 516 if (!event) { 517 goto out_no_events; 518 } 519 520 hdr = event->data; 521 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 522 523 if (event_len < len) { 524 len = event_len; 525 } 526 527 cpu_physical_memory_write(buf, event->data, len); 528 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 529 g_free(event->data); 530 g_free(event); 531 532 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 533 * there are still pending events to be fetched via check-exception. We 534 * do the latter here, since our code relies on edge-triggered 535 * interrupts. 536 */ 537 if (rtas_event_log_contains(mask, true)) { 538 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); 539 } 540 541 return; 542 543 out_no_events: 544 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 545 } 546 547 static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr, 548 uint32_t token, uint32_t nargs, 549 target_ulong args, 550 uint32_t nret, target_ulong rets) 551 { 552 uint32_t mask, buf, len, event_len; 553 sPAPREventLogEntry *event; 554 struct rtas_error_log *hdr; 555 556 if (nargs != 4 || nret != 1) { 557 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 558 return; 559 } 560 561 mask = rtas_ld(args, 0); 562 buf = rtas_ld(args, 2); 563 len = rtas_ld(args, 3); 564 565 event = rtas_event_log_dequeue(mask, false); 566 if (!event) { 567 goto out_no_events; 568 } 569 570 hdr = event->data; 571 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 572 573 if (event_len < len) { 574 len = event_len; 575 } 576 577 cpu_physical_memory_write(buf, event->data, len); 578 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 579 g_free(event->data); 580 g_free(event); 581 return; 582 583 out_no_events: 584 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 585 } 586 587 void spapr_events_init(sPAPRMachineState *spapr) 588 { 589 QTAILQ_INIT(&spapr->pending_events); 590 spapr->check_exception_irq = xics_alloc(spapr->icp, 0, 0, false); 591 spapr->epow_notifier.notify = spapr_powerdown_req; 592 qemu_register_powerdown_notifier(&spapr->epow_notifier); 593 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 594 check_exception); 595 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 596 } 597