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 <libfdt.h> 44 45 struct rtas_error_log { 46 uint32_t summary; 47 #define RTAS_LOG_VERSION_MASK 0xff000000 48 #define RTAS_LOG_VERSION_6 0x06000000 49 #define RTAS_LOG_SEVERITY_MASK 0x00e00000 50 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000 51 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000 52 #define RTAS_LOG_SEVERITY_ERROR 0x00800000 53 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000 54 #define RTAS_LOG_SEVERITY_WARNING 0x00400000 55 #define RTAS_LOG_SEVERITY_EVENT 0x00200000 56 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000 57 #define RTAS_LOG_DISPOSITION_MASK 0x00180000 58 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000 59 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000 60 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000 61 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000 62 #define RTAS_LOG_INITIATOR_MASK 0x0000f000 63 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000 64 #define RTAS_LOG_INITIATOR_CPU 0x00001000 65 #define RTAS_LOG_INITIATOR_PCI 0x00002000 66 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000 67 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000 68 #define RTAS_LOG_TARGET_MASK 0x00000f00 69 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000 70 #define RTAS_LOG_TARGET_CPU 0x00000100 71 #define RTAS_LOG_TARGET_PCI 0x00000200 72 #define RTAS_LOG_TARGET_MEMORY 0x00000400 73 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600 74 #define RTAS_LOG_TYPE_MASK 0x000000ff 75 #define RTAS_LOG_TYPE_OTHER 0x00000000 76 #define RTAS_LOG_TYPE_RETRY 0x00000001 77 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002 78 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003 79 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004 80 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005 81 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006 82 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007 83 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008 84 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009 85 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a 86 #define RTAS_LOG_TYPE_EPOW 0x00000040 87 #define RTAS_LOG_TYPE_HOTPLUG 0x000000e5 88 uint32_t extended_length; 89 } QEMU_PACKED; 90 91 struct rtas_event_log_v6 { 92 uint8_t b0; 93 #define RTAS_LOG_V6_B0_VALID 0x80 94 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40 95 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20 96 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10 97 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08 98 #define RTAS_LOG_V6_B0_NEW_LOG 0x04 99 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02 100 uint8_t _resv1; 101 uint8_t b2; 102 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80 103 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f 104 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e 105 uint8_t _resv2[9]; 106 uint32_t company; 107 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */ 108 } QEMU_PACKED; 109 110 struct rtas_event_log_v6_section_header { 111 uint16_t section_id; 112 uint16_t section_length; 113 uint8_t section_version; 114 uint8_t section_subtype; 115 uint16_t creator_component_id; 116 } QEMU_PACKED; 117 118 struct rtas_event_log_v6_maina { 119 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */ 120 struct rtas_event_log_v6_section_header hdr; 121 uint32_t creation_date; /* BCD: YYYYMMDD */ 122 uint32_t creation_time; /* BCD: HHMMSS00 */ 123 uint8_t _platform1[8]; 124 char creator_id; 125 uint8_t _resv1[2]; 126 uint8_t section_count; 127 uint8_t _resv2[4]; 128 uint8_t _platform2[8]; 129 uint32_t plid; 130 uint8_t _platform3[4]; 131 } QEMU_PACKED; 132 133 struct rtas_event_log_v6_mainb { 134 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */ 135 struct rtas_event_log_v6_section_header hdr; 136 uint8_t subsystem_id; 137 uint8_t _platform1; 138 uint8_t event_severity; 139 uint8_t event_subtype; 140 uint8_t _platform2[4]; 141 uint8_t _resv1[2]; 142 uint16_t action_flags; 143 uint8_t _resv2[4]; 144 } QEMU_PACKED; 145 146 struct rtas_event_log_v6_epow { 147 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */ 148 struct rtas_event_log_v6_section_header hdr; 149 uint8_t sensor_value; 150 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0 151 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1 152 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2 153 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3 154 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4 155 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5 156 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7 157 uint8_t event_modifier; 158 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1 159 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2 160 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3 161 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4 162 uint8_t extended_modifier; 163 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0 164 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1 165 uint8_t _resv; 166 uint64_t reason_code; 167 } QEMU_PACKED; 168 169 struct epow_log_full { 170 struct rtas_error_log hdr; 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 struct rtas_event_log_v6_hp { 178 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */ 179 struct rtas_event_log_v6_section_header hdr; 180 uint8_t hotplug_type; 181 #define RTAS_LOG_V6_HP_TYPE_CPU 1 182 #define RTAS_LOG_V6_HP_TYPE_MEMORY 2 183 #define RTAS_LOG_V6_HP_TYPE_SLOT 3 184 #define RTAS_LOG_V6_HP_TYPE_PHB 4 185 #define RTAS_LOG_V6_HP_TYPE_PCI 5 186 uint8_t hotplug_action; 187 #define RTAS_LOG_V6_HP_ACTION_ADD 1 188 #define RTAS_LOG_V6_HP_ACTION_REMOVE 2 189 uint8_t hotplug_identifier; 190 #define RTAS_LOG_V6_HP_ID_DRC_NAME 1 191 #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2 192 #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3 193 uint8_t reserved; 194 union { 195 uint32_t index; 196 uint32_t count; 197 char name[1]; 198 } drc; 199 } QEMU_PACKED; 200 201 struct hp_log_full { 202 struct rtas_error_log hdr; 203 struct rtas_event_log_v6 v6hdr; 204 struct rtas_event_log_v6_maina maina; 205 struct rtas_event_log_v6_mainb mainb; 206 struct rtas_event_log_v6_hp hp; 207 } QEMU_PACKED; 208 209 #define EVENT_MASK_INTERNAL_ERRORS 0x80000000 210 #define EVENT_MASK_EPOW 0x40000000 211 #define EVENT_MASK_HOTPLUG 0x10000000 212 #define EVENT_MASK_IO 0x08000000 213 214 void spapr_events_fdt_skel(void *fdt, uint32_t check_exception_irq) 215 { 216 uint32_t irq_ranges[] = {cpu_to_be32(check_exception_irq), cpu_to_be32(1)}; 217 uint32_t interrupts[] = {cpu_to_be32(check_exception_irq), 0}; 218 219 _FDT((fdt_begin_node(fdt, "event-sources"))); 220 221 _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0))); 222 _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2))); 223 _FDT((fdt_property(fdt, "interrupt-ranges", 224 irq_ranges, sizeof(irq_ranges)))); 225 226 _FDT((fdt_begin_node(fdt, "epow-events"))); 227 _FDT((fdt_property(fdt, "interrupts", interrupts, sizeof(interrupts)))); 228 _FDT((fdt_end_node(fdt))); 229 230 _FDT((fdt_end_node(fdt))); 231 } 232 233 static void rtas_event_log_queue(int log_type, void *data, bool exception) 234 { 235 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 236 sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1); 237 238 g_assert(data); 239 entry->log_type = log_type; 240 entry->exception = exception; 241 entry->data = data; 242 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); 243 } 244 245 static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask, 246 bool exception) 247 { 248 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 249 sPAPREventLogEntry *entry = NULL; 250 251 /* we only queue EPOW events atm. */ 252 if ((event_mask & EVENT_MASK_EPOW) == 0) { 253 return NULL; 254 } 255 256 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 257 if (entry->exception != exception) { 258 continue; 259 } 260 261 /* EPOW and hotplug events are surfaced in the same manner */ 262 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 263 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 264 break; 265 } 266 } 267 268 if (entry) { 269 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 270 } 271 272 return entry; 273 } 274 275 static bool rtas_event_log_contains(uint32_t event_mask, bool exception) 276 { 277 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 278 sPAPREventLogEntry *entry = NULL; 279 280 /* we only queue EPOW events atm. */ 281 if ((event_mask & EVENT_MASK_EPOW) == 0) { 282 return false; 283 } 284 285 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 286 if (entry->exception != exception) { 287 continue; 288 } 289 290 /* EPOW and hotplug events are surfaced in the same manner */ 291 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 292 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 293 return true; 294 } 295 } 296 297 return false; 298 } 299 300 static uint32_t next_plid; 301 302 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 303 { 304 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 305 | RTAS_LOG_V6_B0_BIGENDIAN; 306 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 307 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 308 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 309 } 310 311 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina, 312 int section_count) 313 { 314 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 315 struct tm tm; 316 int year; 317 318 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 319 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 320 /* FIXME: section version, subtype and creator id? */ 321 spapr_rtc_read(spapr->rtc, &tm, NULL); 322 year = tm.tm_year + 1900; 323 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 324 | (to_bcd(year % 100) << 16) 325 | (to_bcd(tm.tm_mon + 1) << 8) 326 | to_bcd(tm.tm_mday)); 327 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 328 | (to_bcd(tm.tm_min) << 16) 329 | (to_bcd(tm.tm_sec) << 8)); 330 maina->creator_id = 'H'; /* Hypervisor */ 331 maina->section_count = section_count; 332 maina->plid = next_plid++; 333 } 334 335 static void spapr_powerdown_req(Notifier *n, void *opaque) 336 { 337 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 338 struct rtas_error_log *hdr; 339 struct rtas_event_log_v6 *v6hdr; 340 struct rtas_event_log_v6_maina *maina; 341 struct rtas_event_log_v6_mainb *mainb; 342 struct rtas_event_log_v6_epow *epow; 343 struct epow_log_full *new_epow; 344 345 new_epow = g_malloc0(sizeof(*new_epow)); 346 hdr = &new_epow->hdr; 347 v6hdr = &new_epow->v6hdr; 348 maina = &new_epow->maina; 349 mainb = &new_epow->mainb; 350 epow = &new_epow->epow; 351 352 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 353 | RTAS_LOG_SEVERITY_EVENT 354 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 355 | RTAS_LOG_OPTIONAL_PART_PRESENT 356 | RTAS_LOG_TYPE_EPOW); 357 hdr->extended_length = cpu_to_be32(sizeof(*new_epow) 358 - sizeof(new_epow->hdr)); 359 360 spapr_init_v6hdr(v6hdr); 361 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); 362 363 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 364 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 365 /* FIXME: section version, subtype and creator id? */ 366 mainb->subsystem_id = 0xa0; /* External environment */ 367 mainb->event_severity = 0x00; /* Informational / non-error */ 368 mainb->event_subtype = 0xd0; /* Normal shutdown */ 369 370 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 371 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 372 epow->hdr.section_version = 2; /* includes extended modifier */ 373 /* FIXME: section subtype and creator id? */ 374 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 375 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 376 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 377 378 rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true); 379 380 qemu_irq_pulse(xics_get_qirq(spapr->xics, spapr->check_exception_irq)); 381 } 382 383 static void spapr_hotplug_set_signalled(uint32_t drc_index) 384 { 385 sPAPRDRConnector *drc = spapr_dr_connector_by_index(drc_index); 386 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 387 drck->set_signalled(drc); 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 if (hp->hotplug_action == RTAS_LOG_V6_HP_ACTION_ADD) { 437 spapr_hotplug_set_signalled(drc); 438 } 439 break; 440 case SPAPR_DR_CONNECTOR_TYPE_LMB: 441 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 442 break; 443 case SPAPR_DR_CONNECTOR_TYPE_CPU: 444 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU; 445 break; 446 default: 447 /* we shouldn't be signaling hotplug events for resources 448 * that don't support them 449 */ 450 g_assert(false); 451 return; 452 } 453 454 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 455 hp->drc.count = cpu_to_be32(drc); 456 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 457 hp->drc.index = cpu_to_be32(drc); 458 } 459 460 rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true); 461 462 qemu_irq_pulse(xics_get_qirq(spapr->xics, spapr->check_exception_irq)); 463 } 464 465 void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc) 466 { 467 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 468 sPAPRDRConnectorType drc_type = drck->get_type(drc); 469 uint32_t index = drck->get_index(drc); 470 471 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 472 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, index); 473 } 474 475 void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc) 476 { 477 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 478 sPAPRDRConnectorType drc_type = drck->get_type(drc); 479 uint32_t index = drck->get_index(drc); 480 481 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 482 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, index); 483 } 484 485 void spapr_hotplug_req_add_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_ADD, drc_type, count); 490 } 491 492 void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type, 493 uint32_t count) 494 { 495 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 496 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, count); 497 } 498 499 static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, 500 uint32_t token, uint32_t nargs, 501 target_ulong args, 502 uint32_t nret, target_ulong rets) 503 { 504 uint32_t mask, buf, len, event_len; 505 uint64_t xinfo; 506 sPAPREventLogEntry *event; 507 struct rtas_error_log *hdr; 508 509 if ((nargs < 6) || (nargs > 7) || nret != 1) { 510 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 511 return; 512 } 513 514 xinfo = rtas_ld(args, 1); 515 mask = rtas_ld(args, 2); 516 buf = rtas_ld(args, 4); 517 len = rtas_ld(args, 5); 518 if (nargs == 7) { 519 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 520 } 521 522 event = rtas_event_log_dequeue(mask, true); 523 if (!event) { 524 goto out_no_events; 525 } 526 527 hdr = event->data; 528 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 529 530 if (event_len < len) { 531 len = event_len; 532 } 533 534 cpu_physical_memory_write(buf, event->data, len); 535 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 536 g_free(event->data); 537 g_free(event); 538 539 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 540 * there are still pending events to be fetched via check-exception. We 541 * do the latter here, since our code relies on edge-triggered 542 * interrupts. 543 */ 544 if (rtas_event_log_contains(mask, true)) { 545 qemu_irq_pulse(xics_get_qirq(spapr->xics, spapr->check_exception_irq)); 546 } 547 548 return; 549 550 out_no_events: 551 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 552 } 553 554 static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr, 555 uint32_t token, uint32_t nargs, 556 target_ulong args, 557 uint32_t nret, target_ulong rets) 558 { 559 uint32_t mask, buf, len, event_len; 560 sPAPREventLogEntry *event; 561 struct rtas_error_log *hdr; 562 563 if (nargs != 4 || nret != 1) { 564 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 565 return; 566 } 567 568 mask = rtas_ld(args, 0); 569 buf = rtas_ld(args, 2); 570 len = rtas_ld(args, 3); 571 572 event = rtas_event_log_dequeue(mask, false); 573 if (!event) { 574 goto out_no_events; 575 } 576 577 hdr = event->data; 578 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 579 580 if (event_len < len) { 581 len = event_len; 582 } 583 584 cpu_physical_memory_write(buf, event->data, len); 585 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 586 g_free(event->data); 587 g_free(event); 588 return; 589 590 out_no_events: 591 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 592 } 593 594 void spapr_events_init(sPAPRMachineState *spapr) 595 { 596 QTAILQ_INIT(&spapr->pending_events); 597 spapr->check_exception_irq = xics_spapr_alloc(spapr->xics, 0, false, 598 &error_fatal); 599 spapr->epow_notifier.notify = spapr_powerdown_req; 600 qemu_register_powerdown_notifier(&spapr->epow_notifier); 601 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 602 check_exception); 603 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 604 } 605