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/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 41 #include <libfdt.h> 42 43 struct rtas_error_log { 44 uint32_t summary; 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 uint32_t extended_length; 87 } QEMU_PACKED; 88 89 struct rtas_event_log_v6 { 90 uint8_t b0; 91 #define RTAS_LOG_V6_B0_VALID 0x80 92 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40 93 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20 94 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10 95 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08 96 #define RTAS_LOG_V6_B0_NEW_LOG 0x04 97 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02 98 uint8_t _resv1; 99 uint8_t b2; 100 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80 101 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f 102 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e 103 uint8_t _resv2[9]; 104 uint32_t company; 105 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */ 106 } QEMU_PACKED; 107 108 struct rtas_event_log_v6_section_header { 109 uint16_t section_id; 110 uint16_t section_length; 111 uint8_t section_version; 112 uint8_t section_subtype; 113 uint16_t creator_component_id; 114 } QEMU_PACKED; 115 116 struct rtas_event_log_v6_maina { 117 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */ 118 struct rtas_event_log_v6_section_header hdr; 119 uint32_t creation_date; /* BCD: YYYYMMDD */ 120 uint32_t creation_time; /* BCD: HHMMSS00 */ 121 uint8_t _platform1[8]; 122 char creator_id; 123 uint8_t _resv1[2]; 124 uint8_t section_count; 125 uint8_t _resv2[4]; 126 uint8_t _platform2[8]; 127 uint32_t plid; 128 uint8_t _platform3[4]; 129 } QEMU_PACKED; 130 131 struct rtas_event_log_v6_mainb { 132 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */ 133 struct rtas_event_log_v6_section_header hdr; 134 uint8_t subsystem_id; 135 uint8_t _platform1; 136 uint8_t event_severity; 137 uint8_t event_subtype; 138 uint8_t _platform2[4]; 139 uint8_t _resv1[2]; 140 uint16_t action_flags; 141 uint8_t _resv2[4]; 142 } QEMU_PACKED; 143 144 struct rtas_event_log_v6_epow { 145 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */ 146 struct rtas_event_log_v6_section_header hdr; 147 uint8_t sensor_value; 148 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0 149 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1 150 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2 151 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3 152 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4 153 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5 154 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7 155 uint8_t event_modifier; 156 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1 157 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2 158 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3 159 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4 160 uint8_t extended_modifier; 161 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0 162 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1 163 uint8_t _resv; 164 uint64_t reason_code; 165 } QEMU_PACKED; 166 167 struct epow_log_full { 168 struct rtas_error_log hdr; 169 struct rtas_event_log_v6 v6hdr; 170 struct rtas_event_log_v6_maina maina; 171 struct rtas_event_log_v6_mainb mainb; 172 struct rtas_event_log_v6_epow epow; 173 } QEMU_PACKED; 174 175 struct rtas_event_log_v6_hp { 176 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */ 177 struct rtas_event_log_v6_section_header hdr; 178 uint8_t hotplug_type; 179 #define RTAS_LOG_V6_HP_TYPE_CPU 1 180 #define RTAS_LOG_V6_HP_TYPE_MEMORY 2 181 #define RTAS_LOG_V6_HP_TYPE_SLOT 3 182 #define RTAS_LOG_V6_HP_TYPE_PHB 4 183 #define RTAS_LOG_V6_HP_TYPE_PCI 5 184 uint8_t hotplug_action; 185 #define RTAS_LOG_V6_HP_ACTION_ADD 1 186 #define RTAS_LOG_V6_HP_ACTION_REMOVE 2 187 uint8_t hotplug_identifier; 188 #define RTAS_LOG_V6_HP_ID_DRC_NAME 1 189 #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2 190 #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3 191 uint8_t reserved; 192 union { 193 uint32_t index; 194 uint32_t count; 195 char name[1]; 196 } drc; 197 } QEMU_PACKED; 198 199 struct hp_log_full { 200 struct rtas_error_log hdr; 201 struct rtas_event_log_v6 v6hdr; 202 struct rtas_event_log_v6_maina maina; 203 struct rtas_event_log_v6_mainb mainb; 204 struct rtas_event_log_v6_hp hp; 205 } QEMU_PACKED; 206 207 #define EVENT_MASK_INTERNAL_ERRORS 0x80000000 208 #define EVENT_MASK_EPOW 0x40000000 209 #define EVENT_MASK_HOTPLUG 0x10000000 210 #define EVENT_MASK_IO 0x08000000 211 212 #define _FDT(exp) \ 213 do { \ 214 int ret = (exp); \ 215 if (ret < 0) { \ 216 fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \ 217 #exp, fdt_strerror(ret)); \ 218 exit(1); \ 219 } \ 220 } while (0) 221 222 void spapr_events_fdt_skel(void *fdt, uint32_t check_exception_irq) 223 { 224 uint32_t irq_ranges[] = {cpu_to_be32(check_exception_irq), cpu_to_be32(1)}; 225 uint32_t interrupts[] = {cpu_to_be32(check_exception_irq), 0}; 226 227 _FDT((fdt_begin_node(fdt, "event-sources"))); 228 229 _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0))); 230 _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2))); 231 _FDT((fdt_property(fdt, "interrupt-ranges", 232 irq_ranges, sizeof(irq_ranges)))); 233 234 _FDT((fdt_begin_node(fdt, "epow-events"))); 235 _FDT((fdt_property(fdt, "interrupts", interrupts, sizeof(interrupts)))); 236 _FDT((fdt_end_node(fdt))); 237 238 _FDT((fdt_end_node(fdt))); 239 } 240 241 static void rtas_event_log_queue(int log_type, void *data, bool exception) 242 { 243 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 244 sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1); 245 246 g_assert(data); 247 entry->log_type = log_type; 248 entry->exception = exception; 249 entry->data = data; 250 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); 251 } 252 253 static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask, 254 bool exception) 255 { 256 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 257 sPAPREventLogEntry *entry = NULL; 258 259 /* we only queue EPOW events atm. */ 260 if ((event_mask & EVENT_MASK_EPOW) == 0) { 261 return NULL; 262 } 263 264 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 265 if (entry->exception != exception) { 266 continue; 267 } 268 269 /* EPOW and hotplug events are surfaced in the same manner */ 270 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 271 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 272 break; 273 } 274 } 275 276 if (entry) { 277 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 278 } 279 280 return entry; 281 } 282 283 static bool rtas_event_log_contains(uint32_t event_mask, bool exception) 284 { 285 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 286 sPAPREventLogEntry *entry = NULL; 287 288 /* we only queue EPOW events atm. */ 289 if ((event_mask & EVENT_MASK_EPOW) == 0) { 290 return false; 291 } 292 293 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 294 if (entry->exception != exception) { 295 continue; 296 } 297 298 /* EPOW and hotplug events are surfaced in the same manner */ 299 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 300 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 301 return true; 302 } 303 } 304 305 return false; 306 } 307 308 static uint32_t next_plid; 309 310 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 311 { 312 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 313 | RTAS_LOG_V6_B0_BIGENDIAN; 314 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 315 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 316 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 317 } 318 319 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina, 320 int section_count) 321 { 322 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 323 struct tm tm; 324 int year; 325 326 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 327 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 328 /* FIXME: section version, subtype and creator id? */ 329 spapr_rtc_read(spapr->rtc, &tm, NULL); 330 year = tm.tm_year + 1900; 331 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 332 | (to_bcd(year % 100) << 16) 333 | (to_bcd(tm.tm_mon + 1) << 8) 334 | to_bcd(tm.tm_mday)); 335 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 336 | (to_bcd(tm.tm_min) << 16) 337 | (to_bcd(tm.tm_sec) << 8)); 338 maina->creator_id = 'H'; /* Hypervisor */ 339 maina->section_count = section_count; 340 maina->plid = next_plid++; 341 } 342 343 static void spapr_powerdown_req(Notifier *n, void *opaque) 344 { 345 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 346 struct rtas_error_log *hdr; 347 struct rtas_event_log_v6 *v6hdr; 348 struct rtas_event_log_v6_maina *maina; 349 struct rtas_event_log_v6_mainb *mainb; 350 struct rtas_event_log_v6_epow *epow; 351 struct epow_log_full *new_epow; 352 353 new_epow = g_malloc0(sizeof(*new_epow)); 354 hdr = &new_epow->hdr; 355 v6hdr = &new_epow->v6hdr; 356 maina = &new_epow->maina; 357 mainb = &new_epow->mainb; 358 epow = &new_epow->epow; 359 360 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 361 | RTAS_LOG_SEVERITY_EVENT 362 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 363 | RTAS_LOG_OPTIONAL_PART_PRESENT 364 | RTAS_LOG_TYPE_EPOW); 365 hdr->extended_length = cpu_to_be32(sizeof(*new_epow) 366 - sizeof(new_epow->hdr)); 367 368 spapr_init_v6hdr(v6hdr); 369 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); 370 371 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 372 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 373 /* FIXME: section version, subtype and creator id? */ 374 mainb->subsystem_id = 0xa0; /* External environment */ 375 mainb->event_severity = 0x00; /* Informational / non-error */ 376 mainb->event_subtype = 0xd0; /* Normal shutdown */ 377 378 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 379 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 380 epow->hdr.section_version = 2; /* includes extended modifier */ 381 /* FIXME: section subtype and creator id? */ 382 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 383 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 384 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 385 386 rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true); 387 388 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); 389 } 390 391 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, 392 sPAPRDRConnectorType drc_type, 393 uint32_t drc) 394 { 395 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 396 struct hp_log_full *new_hp; 397 struct rtas_error_log *hdr; 398 struct rtas_event_log_v6 *v6hdr; 399 struct rtas_event_log_v6_maina *maina; 400 struct rtas_event_log_v6_mainb *mainb; 401 struct rtas_event_log_v6_hp *hp; 402 403 new_hp = g_malloc0(sizeof(struct hp_log_full)); 404 hdr = &new_hp->hdr; 405 v6hdr = &new_hp->v6hdr; 406 maina = &new_hp->maina; 407 mainb = &new_hp->mainb; 408 hp = &new_hp->hp; 409 410 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 411 | RTAS_LOG_SEVERITY_EVENT 412 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 413 | RTAS_LOG_OPTIONAL_PART_PRESENT 414 | RTAS_LOG_INITIATOR_HOTPLUG 415 | RTAS_LOG_TYPE_HOTPLUG); 416 hdr->extended_length = cpu_to_be32(sizeof(*new_hp) 417 - sizeof(new_hp->hdr)); 418 419 spapr_init_v6hdr(v6hdr); 420 spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */); 421 422 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 423 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 424 mainb->subsystem_id = 0x80; /* External environment */ 425 mainb->event_severity = 0x00; /* Informational / non-error */ 426 mainb->event_subtype = 0x00; /* Normal shutdown */ 427 428 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG); 429 hp->hdr.section_length = cpu_to_be16(sizeof(*hp)); 430 hp->hdr.section_version = 1; /* includes extended modifier */ 431 hp->hotplug_action = hp_action; 432 hp->hotplug_identifier = hp_id; 433 434 switch (drc_type) { 435 case SPAPR_DR_CONNECTOR_TYPE_PCI: 436 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI; 437 break; 438 case SPAPR_DR_CONNECTOR_TYPE_LMB: 439 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 440 break; 441 default: 442 /* we shouldn't be signaling hotplug events for resources 443 * that don't support them 444 */ 445 g_assert(false); 446 return; 447 } 448 449 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 450 hp->drc.count = cpu_to_be32(drc); 451 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 452 hp->drc.index = cpu_to_be32(drc); 453 } 454 455 rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true); 456 457 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); 458 } 459 460 void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc) 461 { 462 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 463 sPAPRDRConnectorType drc_type = drck->get_type(drc); 464 uint32_t index = drck->get_index(drc); 465 466 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 467 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, index); 468 } 469 470 void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc) 471 { 472 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 473 sPAPRDRConnectorType drc_type = drck->get_type(drc); 474 uint32_t index = drck->get_index(drc); 475 476 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 477 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, index); 478 } 479 480 void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType drc_type, 481 uint32_t count) 482 { 483 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 484 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, count); 485 } 486 487 void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type, 488 uint32_t count) 489 { 490 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 491 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, count); 492 } 493 494 static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, 495 uint32_t token, uint32_t nargs, 496 target_ulong args, 497 uint32_t nret, target_ulong rets) 498 { 499 uint32_t mask, buf, len, event_len; 500 uint64_t xinfo; 501 sPAPREventLogEntry *event; 502 struct rtas_error_log *hdr; 503 504 if ((nargs < 6) || (nargs > 7) || nret != 1) { 505 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 506 return; 507 } 508 509 xinfo = rtas_ld(args, 1); 510 mask = rtas_ld(args, 2); 511 buf = rtas_ld(args, 4); 512 len = rtas_ld(args, 5); 513 if (nargs == 7) { 514 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 515 } 516 517 event = rtas_event_log_dequeue(mask, true); 518 if (!event) { 519 goto out_no_events; 520 } 521 522 hdr = event->data; 523 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 524 525 if (event_len < len) { 526 len = event_len; 527 } 528 529 cpu_physical_memory_write(buf, event->data, len); 530 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 531 g_free(event->data); 532 g_free(event); 533 534 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 535 * there are still pending events to be fetched via check-exception. We 536 * do the latter here, since our code relies on edge-triggered 537 * interrupts. 538 */ 539 if (rtas_event_log_contains(mask, true)) { 540 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq)); 541 } 542 543 return; 544 545 out_no_events: 546 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 547 } 548 549 static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr, 550 uint32_t token, uint32_t nargs, 551 target_ulong args, 552 uint32_t nret, target_ulong rets) 553 { 554 uint32_t mask, buf, len, event_len; 555 sPAPREventLogEntry *event; 556 struct rtas_error_log *hdr; 557 558 if (nargs != 4 || nret != 1) { 559 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 560 return; 561 } 562 563 mask = rtas_ld(args, 0); 564 buf = rtas_ld(args, 2); 565 len = rtas_ld(args, 3); 566 567 event = rtas_event_log_dequeue(mask, false); 568 if (!event) { 569 goto out_no_events; 570 } 571 572 hdr = event->data; 573 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 574 575 if (event_len < len) { 576 len = event_len; 577 } 578 579 cpu_physical_memory_write(buf, event->data, len); 580 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 581 g_free(event->data); 582 g_free(event); 583 return; 584 585 out_no_events: 586 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 587 } 588 589 void spapr_events_init(sPAPRMachineState *spapr) 590 { 591 QTAILQ_INIT(&spapr->pending_events); 592 spapr->check_exception_irq = xics_alloc(spapr->icp, 0, 0, false, 593 &error_fatal); 594 spapr->epow_notifier.notify = spapr_powerdown_req; 595 qemu_register_powerdown_notifier(&spapr->epow_notifier); 596 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 597 check_exception); 598 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 599 } 600