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 "cpu.h" 29 #include "sysemu/sysemu.h" 30 #include "sysemu/char.h" 31 #include "hw/qdev.h" 32 #include "sysemu/device_tree.h" 33 34 #include "hw/ppc/spapr.h" 35 #include "hw/ppc/spapr_vio.h" 36 #include "hw/pci/pci.h" 37 #include "hw/pci-host/spapr.h" 38 #include "hw/ppc/spapr_drc.h" 39 40 #include <libfdt.h> 41 42 struct rtas_error_log { 43 uint32_t summary; 44 #define RTAS_LOG_VERSION_MASK 0xff000000 45 #define RTAS_LOG_VERSION_6 0x06000000 46 #define RTAS_LOG_SEVERITY_MASK 0x00e00000 47 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000 48 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000 49 #define RTAS_LOG_SEVERITY_ERROR 0x00800000 50 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000 51 #define RTAS_LOG_SEVERITY_WARNING 0x00400000 52 #define RTAS_LOG_SEVERITY_EVENT 0x00200000 53 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000 54 #define RTAS_LOG_DISPOSITION_MASK 0x00180000 55 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000 56 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000 57 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000 58 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000 59 #define RTAS_LOG_INITIATOR_MASK 0x0000f000 60 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000 61 #define RTAS_LOG_INITIATOR_CPU 0x00001000 62 #define RTAS_LOG_INITIATOR_PCI 0x00002000 63 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000 64 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000 65 #define RTAS_LOG_TARGET_MASK 0x00000f00 66 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000 67 #define RTAS_LOG_TARGET_CPU 0x00000100 68 #define RTAS_LOG_TARGET_PCI 0x00000200 69 #define RTAS_LOG_TARGET_MEMORY 0x00000400 70 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600 71 #define RTAS_LOG_TYPE_MASK 0x000000ff 72 #define RTAS_LOG_TYPE_OTHER 0x00000000 73 #define RTAS_LOG_TYPE_RETRY 0x00000001 74 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002 75 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003 76 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004 77 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005 78 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006 79 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007 80 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008 81 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009 82 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a 83 #define RTAS_LOG_TYPE_EPOW 0x00000040 84 #define RTAS_LOG_TYPE_HOTPLUG 0x000000e5 85 uint32_t extended_length; 86 } QEMU_PACKED; 87 88 struct rtas_event_log_v6 { 89 uint8_t b0; 90 #define RTAS_LOG_V6_B0_VALID 0x80 91 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40 92 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20 93 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10 94 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08 95 #define RTAS_LOG_V6_B0_NEW_LOG 0x04 96 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02 97 uint8_t _resv1; 98 uint8_t b2; 99 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80 100 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f 101 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e 102 uint8_t _resv2[9]; 103 uint32_t company; 104 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */ 105 } QEMU_PACKED; 106 107 struct rtas_event_log_v6_section_header { 108 uint16_t section_id; 109 uint16_t section_length; 110 uint8_t section_version; 111 uint8_t section_subtype; 112 uint16_t creator_component_id; 113 } QEMU_PACKED; 114 115 struct rtas_event_log_v6_maina { 116 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */ 117 struct rtas_event_log_v6_section_header hdr; 118 uint32_t creation_date; /* BCD: YYYYMMDD */ 119 uint32_t creation_time; /* BCD: HHMMSS00 */ 120 uint8_t _platform1[8]; 121 char creator_id; 122 uint8_t _resv1[2]; 123 uint8_t section_count; 124 uint8_t _resv2[4]; 125 uint8_t _platform2[8]; 126 uint32_t plid; 127 uint8_t _platform3[4]; 128 } QEMU_PACKED; 129 130 struct rtas_event_log_v6_mainb { 131 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */ 132 struct rtas_event_log_v6_section_header hdr; 133 uint8_t subsystem_id; 134 uint8_t _platform1; 135 uint8_t event_severity; 136 uint8_t event_subtype; 137 uint8_t _platform2[4]; 138 uint8_t _resv1[2]; 139 uint16_t action_flags; 140 uint8_t _resv2[4]; 141 } QEMU_PACKED; 142 143 struct rtas_event_log_v6_epow { 144 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */ 145 struct rtas_event_log_v6_section_header hdr; 146 uint8_t sensor_value; 147 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0 148 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1 149 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2 150 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3 151 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4 152 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5 153 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7 154 uint8_t event_modifier; 155 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1 156 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2 157 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3 158 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4 159 uint8_t extended_modifier; 160 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0 161 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1 162 uint8_t _resv; 163 uint64_t reason_code; 164 } QEMU_PACKED; 165 166 struct epow_log_full { 167 struct rtas_error_log hdr; 168 struct rtas_event_log_v6 v6hdr; 169 struct rtas_event_log_v6_maina maina; 170 struct rtas_event_log_v6_mainb mainb; 171 struct rtas_event_log_v6_epow epow; 172 } QEMU_PACKED; 173 174 struct rtas_event_log_v6_hp { 175 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */ 176 struct rtas_event_log_v6_section_header hdr; 177 uint8_t hotplug_type; 178 #define RTAS_LOG_V6_HP_TYPE_CPU 1 179 #define RTAS_LOG_V6_HP_TYPE_MEMORY 2 180 #define RTAS_LOG_V6_HP_TYPE_SLOT 3 181 #define RTAS_LOG_V6_HP_TYPE_PHB 4 182 #define RTAS_LOG_V6_HP_TYPE_PCI 5 183 uint8_t hotplug_action; 184 #define RTAS_LOG_V6_HP_ACTION_ADD 1 185 #define RTAS_LOG_V6_HP_ACTION_REMOVE 2 186 uint8_t hotplug_identifier; 187 #define RTAS_LOG_V6_HP_ID_DRC_NAME 1 188 #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2 189 #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3 190 uint8_t reserved; 191 union { 192 uint32_t index; 193 uint32_t count; 194 char name[1]; 195 } drc; 196 } QEMU_PACKED; 197 198 struct hp_log_full { 199 struct rtas_error_log hdr; 200 struct rtas_event_log_v6 v6hdr; 201 struct rtas_event_log_v6_maina maina; 202 struct rtas_event_log_v6_mainb mainb; 203 struct rtas_event_log_v6_hp hp; 204 } QEMU_PACKED; 205 206 #define EVENT_MASK_INTERNAL_ERRORS 0x80000000 207 #define EVENT_MASK_EPOW 0x40000000 208 #define EVENT_MASK_HOTPLUG 0x10000000 209 #define EVENT_MASK_IO 0x08000000 210 211 #define _FDT(exp) \ 212 do { \ 213 int ret = (exp); \ 214 if (ret < 0) { \ 215 fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \ 216 #exp, fdt_strerror(ret)); \ 217 exit(1); \ 218 } \ 219 } while (0) 220 221 void spapr_events_fdt_skel(void *fdt, uint32_t check_exception_irq) 222 { 223 uint32_t irq_ranges[] = {cpu_to_be32(check_exception_irq), cpu_to_be32(1)}; 224 uint32_t interrupts[] = {cpu_to_be32(check_exception_irq), 0}; 225 226 _FDT((fdt_begin_node(fdt, "event-sources"))); 227 228 _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0))); 229 _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2))); 230 _FDT((fdt_property(fdt, "interrupt-ranges", 231 irq_ranges, sizeof(irq_ranges)))); 232 233 _FDT((fdt_begin_node(fdt, "epow-events"))); 234 _FDT((fdt_property(fdt, "interrupts", interrupts, sizeof(interrupts)))); 235 _FDT((fdt_end_node(fdt))); 236 237 _FDT((fdt_end_node(fdt))); 238 } 239 240 static void rtas_event_log_queue(int log_type, void *data, bool exception) 241 { 242 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 243 sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1); 244 245 g_assert(data); 246 entry->log_type = log_type; 247 entry->exception = exception; 248 entry->data = data; 249 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); 250 } 251 252 static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask, 253 bool exception) 254 { 255 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 256 sPAPREventLogEntry *entry = NULL; 257 258 /* we only queue EPOW events atm. */ 259 if ((event_mask & EVENT_MASK_EPOW) == 0) { 260 return NULL; 261 } 262 263 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 264 if (entry->exception != exception) { 265 continue; 266 } 267 268 /* EPOW and hotplug events are surfaced in the same manner */ 269 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 270 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 271 break; 272 } 273 } 274 275 if (entry) { 276 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 277 } 278 279 return entry; 280 } 281 282 static bool rtas_event_log_contains(uint32_t event_mask, bool exception) 283 { 284 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 285 sPAPREventLogEntry *entry = NULL; 286 287 /* we only queue EPOW events atm. */ 288 if ((event_mask & EVENT_MASK_EPOW) == 0) { 289 return false; 290 } 291 292 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 293 if (entry->exception != exception) { 294 continue; 295 } 296 297 /* EPOW and hotplug events are surfaced in the same manner */ 298 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 299 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 300 return true; 301 } 302 } 303 304 return false; 305 } 306 307 static uint32_t next_plid; 308 309 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 310 { 311 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 312 | RTAS_LOG_V6_B0_BIGENDIAN; 313 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 314 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 315 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 316 } 317 318 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina, 319 int section_count) 320 { 321 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 322 struct tm tm; 323 int year; 324 325 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 326 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 327 /* FIXME: section version, subtype and creator id? */ 328 spapr_rtc_read(spapr->rtc, &tm, NULL); 329 year = tm.tm_year + 1900; 330 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 331 | (to_bcd(year % 100) << 16) 332 | (to_bcd(tm.tm_mon + 1) << 8) 333 | to_bcd(tm.tm_mday)); 334 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 335 | (to_bcd(tm.tm_min) << 16) 336 | (to_bcd(tm.tm_sec) << 8)); 337 maina->creator_id = 'H'; /* Hypervisor */ 338 maina->section_count = section_count; 339 maina->plid = next_plid++; 340 } 341 342 static void spapr_powerdown_req(Notifier *n, void *opaque) 343 { 344 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 345 struct rtas_error_log *hdr; 346 struct rtas_event_log_v6 *v6hdr; 347 struct rtas_event_log_v6_maina *maina; 348 struct rtas_event_log_v6_mainb *mainb; 349 struct rtas_event_log_v6_epow *epow; 350 struct epow_log_full *new_epow; 351 352 new_epow = g_malloc0(sizeof(*new_epow)); 353 hdr = &new_epow->hdr; 354 v6hdr = &new_epow->v6hdr; 355 maina = &new_epow->maina; 356 mainb = &new_epow->mainb; 357 epow = &new_epow->epow; 358 359 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 360 | RTAS_LOG_SEVERITY_EVENT 361 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 362 | RTAS_LOG_OPTIONAL_PART_PRESENT 363 | RTAS_LOG_TYPE_EPOW); 364 hdr->extended_length = cpu_to_be32(sizeof(*new_epow) 365 - sizeof(new_epow->hdr)); 366 367 spapr_init_v6hdr(v6hdr); 368 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); 369 370 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 371 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 372 /* FIXME: section version, subtype and creator id? */ 373 mainb->subsystem_id = 0xa0; /* External environment */ 374 mainb->event_severity = 0x00; /* Informational / non-error */ 375 mainb->event_subtype = 0xd0; /* Normal shutdown */ 376 377 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 378 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 379 epow->hdr.section_version = 2; /* includes extended modifier */ 380 /* FIXME: section subtype and creator id? */ 381 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 382 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 383 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 384 385 rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true); 386 387 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); 388 } 389 390 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, 391 sPAPRDRConnectorType drc_type, 392 uint32_t drc) 393 { 394 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 395 struct hp_log_full *new_hp; 396 struct rtas_error_log *hdr; 397 struct rtas_event_log_v6 *v6hdr; 398 struct rtas_event_log_v6_maina *maina; 399 struct rtas_event_log_v6_mainb *mainb; 400 struct rtas_event_log_v6_hp *hp; 401 402 new_hp = g_malloc0(sizeof(struct hp_log_full)); 403 hdr = &new_hp->hdr; 404 v6hdr = &new_hp->v6hdr; 405 maina = &new_hp->maina; 406 mainb = &new_hp->mainb; 407 hp = &new_hp->hp; 408 409 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 410 | RTAS_LOG_SEVERITY_EVENT 411 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 412 | RTAS_LOG_OPTIONAL_PART_PRESENT 413 | RTAS_LOG_INITIATOR_HOTPLUG 414 | RTAS_LOG_TYPE_HOTPLUG); 415 hdr->extended_length = cpu_to_be32(sizeof(*new_hp) 416 - sizeof(new_hp->hdr)); 417 418 spapr_init_v6hdr(v6hdr); 419 spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */); 420 421 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 422 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 423 mainb->subsystem_id = 0x80; /* External environment */ 424 mainb->event_severity = 0x00; /* Informational / non-error */ 425 mainb->event_subtype = 0x00; /* Normal shutdown */ 426 427 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG); 428 hp->hdr.section_length = cpu_to_be16(sizeof(*hp)); 429 hp->hdr.section_version = 1; /* includes extended modifier */ 430 hp->hotplug_action = hp_action; 431 hp->hotplug_identifier = hp_id; 432 433 switch (drc_type) { 434 case SPAPR_DR_CONNECTOR_TYPE_PCI: 435 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; 436 break; 437 case SPAPR_DR_CONNECTOR_TYPE_LMB: 438 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 439 break; 440 default: 441 /* we shouldn't be signaling hotplug events for resources 442 * that don't support them 443 */ 444 g_assert(false); 445 return; 446 } 447 448 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 449 hp->drc.count = cpu_to_be32(drc); 450 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 451 hp->drc.index = cpu_to_be32(drc); 452 } 453 454 rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true); 455 456 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); 457 } 458 459 void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc) 460 { 461 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 462 sPAPRDRConnectorType drc_type = drck->get_type(drc); 463 uint32_t index = drck->get_index(drc); 464 465 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 466 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, index); 467 } 468 469 void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc) 470 { 471 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 472 sPAPRDRConnectorType drc_type = drck->get_type(drc); 473 uint32_t index = drck->get_index(drc); 474 475 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 476 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, index); 477 } 478 479 void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType drc_type, 480 uint32_t count) 481 { 482 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 483 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, count); 484 } 485 486 void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type, 487 uint32_t count) 488 { 489 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 490 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, count); 491 } 492 493 static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, 494 uint32_t token, uint32_t nargs, 495 target_ulong args, 496 uint32_t nret, target_ulong rets) 497 { 498 uint32_t mask, buf, len, event_len; 499 uint64_t xinfo; 500 sPAPREventLogEntry *event; 501 struct rtas_error_log *hdr; 502 503 if ((nargs < 6) || (nargs > 7) || nret != 1) { 504 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 505 return; 506 } 507 508 xinfo = rtas_ld(args, 1); 509 mask = rtas_ld(args, 2); 510 buf = rtas_ld(args, 4); 511 len = rtas_ld(args, 5); 512 if (nargs == 7) { 513 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 514 } 515 516 event = rtas_event_log_dequeue(mask, true); 517 if (!event) { 518 goto out_no_events; 519 } 520 521 hdr = event->data; 522 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 523 524 if (event_len < len) { 525 len = event_len; 526 } 527 528 cpu_physical_memory_write(buf, event->data, len); 529 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 530 g_free(event->data); 531 g_free(event); 532 533 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 534 * there are still pending events to be fetched via check-exception. We 535 * do the latter here, since our code relies on edge-triggered 536 * interrupts. 537 */ 538 if (rtas_event_log_contains(mask, true)) { 539 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); 540 } 541 542 return; 543 544 out_no_events: 545 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 546 } 547 548 static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr, 549 uint32_t token, uint32_t nargs, 550 target_ulong args, 551 uint32_t nret, target_ulong rets) 552 { 553 uint32_t mask, buf, len, event_len; 554 sPAPREventLogEntry *event; 555 struct rtas_error_log *hdr; 556 557 if (nargs != 4 || nret != 1) { 558 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 559 return; 560 } 561 562 mask = rtas_ld(args, 0); 563 buf = rtas_ld(args, 2); 564 len = rtas_ld(args, 3); 565 566 event = rtas_event_log_dequeue(mask, false); 567 if (!event) { 568 goto out_no_events; 569 } 570 571 hdr = event->data; 572 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 573 574 if (event_len < len) { 575 len = event_len; 576 } 577 578 cpu_physical_memory_write(buf, event->data, len); 579 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 580 g_free(event->data); 581 g_free(event); 582 return; 583 584 out_no_events: 585 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 586 } 587 588 void spapr_events_init(sPAPRMachineState *spapr) 589 { 590 QTAILQ_INIT(&spapr->pending_events); 591 spapr->check_exception_irq = xics_alloc(spapr->icp, 0, 0, false); 592 spapr->epow_notifier.notify = spapr_powerdown_req; 593 qemu_register_powerdown_notifier(&spapr->epow_notifier); 594 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 595 check_exception); 596 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 597 } 598