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_dt_events(void *fdt, uint32_t check_exception_irq) 215 { 216 int event_sources, epow_events; 217 uint32_t irq_ranges[] = {cpu_to_be32(check_exception_irq), cpu_to_be32(1)}; 218 uint32_t interrupts[] = {cpu_to_be32(check_exception_irq), 0}; 219 220 _FDT(event_sources = fdt_add_subnode(fdt, 0, "event-sources")); 221 222 _FDT(fdt_setprop(fdt, event_sources, "interrupt-controller", NULL, 0)); 223 _FDT(fdt_setprop_cell(fdt, event_sources, "#interrupt-cells", 2)); 224 _FDT(fdt_setprop(fdt, event_sources, "interrupt-ranges", 225 irq_ranges, sizeof(irq_ranges))); 226 227 _FDT(epow_events = fdt_add_subnode(fdt, event_sources, "epow-events")); 228 _FDT(fdt_setprop(fdt, epow_events, "interrupts", 229 interrupts, sizeof(interrupts))); 230 } 231 232 static void rtas_event_log_queue(int log_type, void *data, bool exception) 233 { 234 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 235 sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1); 236 237 g_assert(data); 238 entry->log_type = log_type; 239 entry->exception = exception; 240 entry->data = data; 241 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); 242 } 243 244 static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask, 245 bool exception) 246 { 247 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 248 sPAPREventLogEntry *entry = NULL; 249 250 /* we only queue EPOW events atm. */ 251 if ((event_mask & EVENT_MASK_EPOW) == 0) { 252 return NULL; 253 } 254 255 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 256 if (entry->exception != exception) { 257 continue; 258 } 259 260 /* EPOW and hotplug events are surfaced in the same manner */ 261 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 262 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 263 break; 264 } 265 } 266 267 if (entry) { 268 QTAILQ_REMOVE(&spapr->pending_events, entry, next); 269 } 270 271 return entry; 272 } 273 274 static bool rtas_event_log_contains(uint32_t event_mask, bool exception) 275 { 276 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 277 sPAPREventLogEntry *entry = NULL; 278 279 /* we only queue EPOW events atm. */ 280 if ((event_mask & EVENT_MASK_EPOW) == 0) { 281 return false; 282 } 283 284 QTAILQ_FOREACH(entry, &spapr->pending_events, next) { 285 if (entry->exception != exception) { 286 continue; 287 } 288 289 /* EPOW and hotplug events are surfaced in the same manner */ 290 if (entry->log_type == RTAS_LOG_TYPE_EPOW || 291 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) { 292 return true; 293 } 294 } 295 296 return false; 297 } 298 299 static uint32_t next_plid; 300 301 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr) 302 { 303 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG 304 | RTAS_LOG_V6_B0_BIGENDIAN; 305 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT 306 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT; 307 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM); 308 } 309 310 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina, 311 int section_count) 312 { 313 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 314 struct tm tm; 315 int year; 316 317 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA); 318 maina->hdr.section_length = cpu_to_be16(sizeof(*maina)); 319 /* FIXME: section version, subtype and creator id? */ 320 spapr_rtc_read(spapr->rtc, &tm, NULL); 321 year = tm.tm_year + 1900; 322 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24) 323 | (to_bcd(year % 100) << 16) 324 | (to_bcd(tm.tm_mon + 1) << 8) 325 | to_bcd(tm.tm_mday)); 326 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24) 327 | (to_bcd(tm.tm_min) << 16) 328 | (to_bcd(tm.tm_sec) << 8)); 329 maina->creator_id = 'H'; /* Hypervisor */ 330 maina->section_count = section_count; 331 maina->plid = next_plid++; 332 } 333 334 static void spapr_powerdown_req(Notifier *n, void *opaque) 335 { 336 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); 337 struct rtas_error_log *hdr; 338 struct rtas_event_log_v6 *v6hdr; 339 struct rtas_event_log_v6_maina *maina; 340 struct rtas_event_log_v6_mainb *mainb; 341 struct rtas_event_log_v6_epow *epow; 342 struct epow_log_full *new_epow; 343 344 new_epow = g_malloc0(sizeof(*new_epow)); 345 hdr = &new_epow->hdr; 346 v6hdr = &new_epow->v6hdr; 347 maina = &new_epow->maina; 348 mainb = &new_epow->mainb; 349 epow = &new_epow->epow; 350 351 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 352 | RTAS_LOG_SEVERITY_EVENT 353 | RTAS_LOG_DISPOSITION_NOT_RECOVERED 354 | RTAS_LOG_OPTIONAL_PART_PRESENT 355 | RTAS_LOG_TYPE_EPOW); 356 hdr->extended_length = cpu_to_be32(sizeof(*new_epow) 357 - sizeof(new_epow->hdr)); 358 359 spapr_init_v6hdr(v6hdr); 360 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); 361 362 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB); 363 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb)); 364 /* FIXME: section version, subtype and creator id? */ 365 mainb->subsystem_id = 0xa0; /* External environment */ 366 mainb->event_severity = 0x00; /* Informational / non-error */ 367 mainb->event_subtype = 0xd0; /* Normal shutdown */ 368 369 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW); 370 epow->hdr.section_length = cpu_to_be16(sizeof(*epow)); 371 epow->hdr.section_version = 2; /* includes extended modifier */ 372 /* FIXME: section subtype and creator id? */ 373 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN; 374 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; 375 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; 376 377 rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true); 378 379 qemu_irq_pulse(xics_get_qirq(spapr->xics, spapr->check_exception_irq)); 380 } 381 382 static void spapr_hotplug_set_signalled(uint32_t drc_index) 383 { 384 sPAPRDRConnector *drc = spapr_dr_connector_by_index(drc_index); 385 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 386 drck->set_signalled(drc); 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 if (hp->hotplug_action == RTAS_LOG_V6_HP_ACTION_ADD) { 436 spapr_hotplug_set_signalled(drc); 437 } 438 break; 439 case SPAPR_DR_CONNECTOR_TYPE_LMB: 440 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY; 441 break; 442 case SPAPR_DR_CONNECTOR_TYPE_CPU: 443 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU; 444 break; 445 default: 446 /* we shouldn't be signaling hotplug events for resources 447 * that don't support them 448 */ 449 g_assert(false); 450 return; 451 } 452 453 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) { 454 hp->drc.count = cpu_to_be32(drc); 455 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) { 456 hp->drc.index = cpu_to_be32(drc); 457 } 458 459 rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true); 460 461 qemu_irq_pulse(xics_get_qirq(spapr->xics, spapr->check_exception_irq)); 462 } 463 464 void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc) 465 { 466 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 467 sPAPRDRConnectorType drc_type = drck->get_type(drc); 468 uint32_t index = drck->get_index(drc); 469 470 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 471 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, index); 472 } 473 474 void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc) 475 { 476 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); 477 sPAPRDRConnectorType drc_type = drck->get_type(drc); 478 uint32_t index = drck->get_index(drc); 479 480 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX, 481 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, index); 482 } 483 484 void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType drc_type, 485 uint32_t count) 486 { 487 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 488 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, count); 489 } 490 491 void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type, 492 uint32_t count) 493 { 494 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT, 495 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, count); 496 } 497 498 static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, 499 uint32_t token, uint32_t nargs, 500 target_ulong args, 501 uint32_t nret, target_ulong rets) 502 { 503 uint32_t mask, buf, len, event_len; 504 uint64_t xinfo; 505 sPAPREventLogEntry *event; 506 struct rtas_error_log *hdr; 507 508 if ((nargs < 6) || (nargs > 7) || nret != 1) { 509 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 510 return; 511 } 512 513 xinfo = rtas_ld(args, 1); 514 mask = rtas_ld(args, 2); 515 buf = rtas_ld(args, 4); 516 len = rtas_ld(args, 5); 517 if (nargs == 7) { 518 xinfo |= (uint64_t)rtas_ld(args, 6) << 32; 519 } 520 521 event = rtas_event_log_dequeue(mask, true); 522 if (!event) { 523 goto out_no_events; 524 } 525 526 hdr = event->data; 527 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 528 529 if (event_len < len) { 530 len = event_len; 531 } 532 533 cpu_physical_memory_write(buf, event->data, len); 534 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 535 g_free(event->data); 536 g_free(event); 537 538 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if 539 * there are still pending events to be fetched via check-exception. We 540 * do the latter here, since our code relies on edge-triggered 541 * interrupts. 542 */ 543 if (rtas_event_log_contains(mask, true)) { 544 qemu_irq_pulse(xics_get_qirq(spapr->xics, spapr->check_exception_irq)); 545 } 546 547 return; 548 549 out_no_events: 550 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 551 } 552 553 static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr, 554 uint32_t token, uint32_t nargs, 555 target_ulong args, 556 uint32_t nret, target_ulong rets) 557 { 558 uint32_t mask, buf, len, event_len; 559 sPAPREventLogEntry *event; 560 struct rtas_error_log *hdr; 561 562 if (nargs != 4 || nret != 1) { 563 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); 564 return; 565 } 566 567 mask = rtas_ld(args, 0); 568 buf = rtas_ld(args, 2); 569 len = rtas_ld(args, 3); 570 571 event = rtas_event_log_dequeue(mask, false); 572 if (!event) { 573 goto out_no_events; 574 } 575 576 hdr = event->data; 577 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); 578 579 if (event_len < len) { 580 len = event_len; 581 } 582 583 cpu_physical_memory_write(buf, event->data, len); 584 rtas_st(rets, 0, RTAS_OUT_SUCCESS); 585 g_free(event->data); 586 g_free(event); 587 return; 588 589 out_no_events: 590 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND); 591 } 592 593 void spapr_events_init(sPAPRMachineState *spapr) 594 { 595 QTAILQ_INIT(&spapr->pending_events); 596 spapr->check_exception_irq = xics_spapr_alloc(spapr->xics, 0, false, 597 &error_fatal); 598 spapr->epow_notifier.notify = spapr_powerdown_req; 599 qemu_register_powerdown_notifier(&spapr->epow_notifier); 600 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception", 601 check_exception); 602 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan); 603 } 604