hw/ppc/spapr_events.c

   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 "hw/qdev.h"
  32 #include "sysemu/device_tree.h"
  33
  34 #include "hw/ppc/fdt.h"
  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 #include "qemu/help_option.h"
  41 #include "qemu/bcd.h"
  42 #include "hw/ppc/spapr_ovec.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 union drc_identifier {
 178     uint32_t index;
 179     uint32_t count;
 180     struct {
 181         uint32_t count;
 182         uint32_t index;
 183     } count_indexed;
 184     char name[1];
 185 } QEMU_PACKED;
 186
 187 struct rtas_event_log_v6_hp {
 188 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG              0x4850 /* HP */
 189     struct rtas_event_log_v6_section_header hdr;
 190     uint8_t hotplug_type;
 191 #define RTAS_LOG_V6_HP_TYPE_CPU                          1
 192 #define RTAS_LOG_V6_HP_TYPE_MEMORY                       2
 193 #define RTAS_LOG_V6_HP_TYPE_SLOT                         3
 194 #define RTAS_LOG_V6_HP_TYPE_PHB                          4
 195 #define RTAS_LOG_V6_HP_TYPE_PCI                          5
 196     uint8_t hotplug_action;
 197 #define RTAS_LOG_V6_HP_ACTION_ADD                        1
 198 #define RTAS_LOG_V6_HP_ACTION_REMOVE                     2
 199     uint8_t hotplug_identifier;
 200 #define RTAS_LOG_V6_HP_ID_DRC_NAME                       1
 201 #define RTAS_LOG_V6_HP_ID_DRC_INDEX                      2
 202 #define RTAS_LOG_V6_HP_ID_DRC_COUNT                      3
 203 #define RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED              4
 204     uint8_t reserved;
 205     union drc_identifier drc_id;
 206 } QEMU_PACKED;
 207
 208 struct hp_log_full {
 209     struct rtas_error_log hdr;
 210     struct rtas_event_log_v6 v6hdr;
 211     struct rtas_event_log_v6_maina maina;
 212     struct rtas_event_log_v6_mainb mainb;
 213     struct rtas_event_log_v6_hp hp;
 214 } QEMU_PACKED;
 215
 216 typedef enum EventClass {
 217     EVENT_CLASS_INTERNAL_ERRORS     = 0,
 218     EVENT_CLASS_EPOW                = 1,
 219     EVENT_CLASS_RESERVED            = 2,
 220     EVENT_CLASS_HOT_PLUG            = 3,
 221     EVENT_CLASS_IO                  = 4,
 222     EVENT_CLASS_MAX
 223 } EventClassIndex;
 224 #define EVENT_CLASS_MASK(index) (1 << (31 - index))
 225
 226 static const char * const event_names[EVENT_CLASS_MAX] = {
 227     [EVENT_CLASS_INTERNAL_ERRORS]       = "internal-errors",
 228     [EVENT_CLASS_EPOW]                  = "epow-events",
 229     [EVENT_CLASS_HOT_PLUG]              = "hot-plug-events",
 230     [EVENT_CLASS_IO]                    = "ibm,io-events",
 231 };
 232
 233 struct sPAPREventSource {
 234     int irq;
 235     uint32_t mask;
 236     bool enabled;
 237 };
 238
 239 static sPAPREventSource *spapr_event_sources_new(void)
 240 {
 241     return g_new0(sPAPREventSource, EVENT_CLASS_MAX);
 242 }
 243
 244 static void spapr_event_sources_register(sPAPREventSource *event_sources,
 245                                         EventClassIndex index, int irq)
 246 {
 247     /* we only support 1 irq per event class at the moment */
 248     g_assert(event_sources);
 249     g_assert(!event_sources[index].enabled);
 250     event_sources[index].irq = irq;
 251     event_sources[index].mask = EVENT_CLASS_MASK(index);
 252     event_sources[index].enabled = true;
 253 }
 254
 255 static const sPAPREventSource *
 256 spapr_event_sources_get_source(sPAPREventSource *event_sources,
 257                                EventClassIndex index)
 258 {
 259     g_assert(index < EVENT_CLASS_MAX);
 260     g_assert(event_sources);
 261
 262     return &event_sources[index];
 263 }
 264
 265 void spapr_dt_events(sPAPRMachineState *spapr, void *fdt)
 266 {
 267     uint32_t irq_ranges[EVENT_CLASS_MAX * 2];
 268     int i, count = 0, event_sources;
 269     sPAPREventSource *events = spapr->event_sources;
 270
 271     g_assert(events);
 272
 273     _FDT(event_sources = fdt_add_subnode(fdt, 0, "event-sources"));
 274
 275     for (i = 0, count = 0; i < EVENT_CLASS_MAX; i++) {
 276         int node_offset;
 277         uint32_t interrupts[2];
 278         const sPAPREventSource *source =
 279             spapr_event_sources_get_source(events, i);
 280         const char *source_name = event_names[i];
 281
 282         if (!source->enabled) {
 283             continue;
 284         }
 285
 286         interrupts[0] = cpu_to_be32(source->irq);
 287         interrupts[1] = 0;
 288
 289         _FDT(node_offset = fdt_add_subnode(fdt, event_sources, source_name));
 290         _FDT(fdt_setprop(fdt, node_offset, "interrupts", interrupts,
 291                          sizeof(interrupts)));
 292
 293         irq_ranges[count++] = interrupts[0];
 294         irq_ranges[count++] = cpu_to_be32(1);
 295     }
 296
 297     irq_ranges[count] = cpu_to_be32(count);
 298     count++;
 299
 300     _FDT((fdt_setprop(fdt, event_sources, "interrupt-controller", NULL, 0)));
 301     _FDT((fdt_setprop_cell(fdt, event_sources, "#interrupt-cells", 2)));
 302     _FDT((fdt_setprop(fdt, event_sources, "interrupt-ranges",
 303                       irq_ranges, count * sizeof(uint32_t))));
 304 }
 305
 306 static const sPAPREventSource *
 307 rtas_event_log_to_source(sPAPRMachineState *spapr, int log_type)
 308 {
 309     const sPAPREventSource *source;
 310
 311     g_assert(spapr->event_sources);
 312
 313     switch (log_type) {
 314     case RTAS_LOG_TYPE_HOTPLUG:
 315         source = spapr_event_sources_get_source(spapr->event_sources,
 316                                                 EVENT_CLASS_HOT_PLUG);
 317         if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) {
 318             g_assert(source->enabled);
 319             break;
 320         }
 321         /* fall back to epow for legacy hotplug interrupt source */
 322     case RTAS_LOG_TYPE_EPOW:
 323         source = spapr_event_sources_get_source(spapr->event_sources,
 324                                                 EVENT_CLASS_EPOW);
 325         break;
 326     default:
 327         source = NULL;
 328     }
 329
 330     return source;
 331 }
 332
 333 static int rtas_event_log_to_irq(sPAPRMachineState *spapr, int log_type)
 334 {
 335     const sPAPREventSource *source;
 336
 337     source = rtas_event_log_to_source(spapr, log_type);
 338     g_assert(source);
 339     g_assert(source->enabled);
 340
 341     return source->irq;
 342 }
 343
 344 static void rtas_event_log_queue(int log_type, void *data)
 345 {
 346     sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
 347     sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1);
 348
 349     g_assert(data);
 350     entry->log_type = log_type;
 351     entry->data = data;
 352     QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next);
 353 }
 354
 355 static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask)
 356 {
 357     sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
 358     sPAPREventLogEntry *entry = NULL;
 359
 360     QTAILQ_FOREACH(entry, &spapr->pending_events, next) {
 361         const sPAPREventSource *source =
 362             rtas_event_log_to_source(spapr, entry->log_type);
 363
 364         if (source->mask & event_mask) {
 365             break;
 366         }
 367     }
 368
 369     if (entry) {
 370         QTAILQ_REMOVE(&spapr->pending_events, entry, next);
 371     }
 372
 373     return entry;
 374 }
 375
 376 static bool rtas_event_log_contains(uint32_t event_mask)
 377 {
 378     sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
 379     sPAPREventLogEntry *entry = NULL;
 380
 381     QTAILQ_FOREACH(entry, &spapr->pending_events, next) {
 382         const sPAPREventSource *source =
 383             rtas_event_log_to_source(spapr, entry->log_type);
 384
 385         if (source->mask & event_mask) {
 386             return true;
 387         }
 388     }
 389
 390     return false;
 391 }
 392
 393 static uint32_t next_plid;
 394
 395 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr)
 396 {
 397     v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG
 398         | RTAS_LOG_V6_B0_BIGENDIAN;
 399     v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT
 400         | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT;
 401     v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM);
 402 }
 403
 404 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina,
 405                              int section_count)
 406 {
 407     sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
 408     struct tm tm;
 409     int year;
 410
 411     maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA);
 412     maina->hdr.section_length = cpu_to_be16(sizeof(*maina));
 413     /* FIXME: section version, subtype and creator id? */
 414     spapr_rtc_read(&spapr->rtc, &tm, NULL);
 415     year = tm.tm_year + 1900;
 416     maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24)
 417                                        | (to_bcd(year % 100) << 16)
 418                                        | (to_bcd(tm.tm_mon + 1) << 8)
 419                                        | to_bcd(tm.tm_mday));
 420     maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24)
 421                                        | (to_bcd(tm.tm_min) << 16)
 422                                        | (to_bcd(tm.tm_sec) << 8));
 423     maina->creator_id = 'H'; /* Hypervisor */
 424     maina->section_count = section_count;
 425     maina->plid = next_plid++;
 426 }
 427
 428 static void spapr_powerdown_req(Notifier *n, void *opaque)
 429 {
 430     sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
 431     struct rtas_error_log *hdr;
 432     struct rtas_event_log_v6 *v6hdr;
 433     struct rtas_event_log_v6_maina *maina;
 434     struct rtas_event_log_v6_mainb *mainb;
 435     struct rtas_event_log_v6_epow *epow;
 436     struct epow_log_full *new_epow;
 437
 438     new_epow = g_malloc0(sizeof(*new_epow));
 439     hdr = &new_epow->hdr;
 440     v6hdr = &new_epow->v6hdr;
 441     maina = &new_epow->maina;
 442     mainb = &new_epow->mainb;
 443     epow = &new_epow->epow;
 444
 445     hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6
 446                                | RTAS_LOG_SEVERITY_EVENT
 447                                | RTAS_LOG_DISPOSITION_NOT_RECOVERED
 448                                | RTAS_LOG_OPTIONAL_PART_PRESENT
 449                                | RTAS_LOG_TYPE_EPOW);
 450     hdr->extended_length = cpu_to_be32(sizeof(*new_epow)
 451                                        - sizeof(new_epow->hdr));
 452
 453     spapr_init_v6hdr(v6hdr);
 454     spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */);
 455
 456     mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
 457     mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
 458     /* FIXME: section version, subtype and creator id? */
 459     mainb->subsystem_id = 0xa0; /* External environment */
 460     mainb->event_severity = 0x00; /* Informational / non-error */
 461     mainb->event_subtype = 0xd0; /* Normal shutdown */
 462
 463     epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW);
 464     epow->hdr.section_length = cpu_to_be16(sizeof(*epow));
 465     epow->hdr.section_version = 2; /* includes extended modifier */
 466     /* FIXME: section subtype and creator id? */
 467     epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN;
 468     epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL;
 469     epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC;
 470
 471     rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow);
 472
 473     qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr),
 474                                  rtas_event_log_to_irq(spapr,
 475                                                        RTAS_LOG_TYPE_EPOW)));
 476 }
 477
 478 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action,
 479                                     sPAPRDRConnectorType drc_type,
 480                                     union drc_identifier *drc_id)
 481 {
 482     sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
 483     struct hp_log_full *new_hp;
 484     struct rtas_error_log *hdr;
 485     struct rtas_event_log_v6 *v6hdr;
 486     struct rtas_event_log_v6_maina *maina;
 487     struct rtas_event_log_v6_mainb *mainb;
 488     struct rtas_event_log_v6_hp *hp;
 489
 490     new_hp = g_malloc0(sizeof(struct hp_log_full));
 491     hdr = &new_hp->hdr;
 492     v6hdr = &new_hp->v6hdr;
 493     maina = &new_hp->maina;
 494     mainb = &new_hp->mainb;
 495     hp = &new_hp->hp;
 496
 497     hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6
 498                                | RTAS_LOG_SEVERITY_EVENT
 499                                | RTAS_LOG_DISPOSITION_NOT_RECOVERED
 500                                | RTAS_LOG_OPTIONAL_PART_PRESENT
 501                                | RTAS_LOG_INITIATOR_HOTPLUG
 502                                | RTAS_LOG_TYPE_HOTPLUG);
 503     hdr->extended_length = cpu_to_be32(sizeof(*new_hp)
 504                                        - sizeof(new_hp->hdr));
 505
 506     spapr_init_v6hdr(v6hdr);
 507     spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */);
 508
 509     mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
 510     mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
 511     mainb->subsystem_id = 0x80; /* External environment */
 512     mainb->event_severity = 0x00; /* Informational / non-error */
 513     mainb->event_subtype = 0x00; /* Normal shutdown */
 514
 515     hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG);
 516     hp->hdr.section_length = cpu_to_be16(sizeof(*hp));
 517     hp->hdr.section_version = 1; /* includes extended modifier */
 518     hp->hotplug_action = hp_action;
 519     hp->hotplug_identifier = hp_id;
 520
 521     switch (drc_type) {
 522     case SPAPR_DR_CONNECTOR_TYPE_PCI:
 523         hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI;
 524         break;
 525     case SPAPR_DR_CONNECTOR_TYPE_LMB:
 526         hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY;
 527         break;
 528     case SPAPR_DR_CONNECTOR_TYPE_CPU:
 529         hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU;
 530         break;
 531     default:
 532         /* we shouldn't be signaling hotplug events for resources
 533          * that don't support them
 534          */
 535         g_assert(false);
 536         return;
 537     }
 538
 539     if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) {
 540         hp->drc_id.count = cpu_to_be32(drc_id->count);
 541     } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) {
 542         hp->drc_id.index = cpu_to_be32(drc_id->index);
 543     } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED) {
 544         /* we should not be using count_indexed value unless the guest
 545          * supports dedicated hotplug event source
 546          */
 547         g_assert(spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT));
 548         hp->drc_id.count_indexed.count =
 549             cpu_to_be32(drc_id->count_indexed.count);
 550         hp->drc_id.count_indexed.index =
 551             cpu_to_be32(drc_id->count_indexed.index);
 552     }
 553
 554     rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp);
 555
 556     qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr),
 557                                  rtas_event_log_to_irq(spapr,
 558                                                        RTAS_LOG_TYPE_HOTPLUG)));
 559 }
 560
 561 void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc)
 562 {
 563     sPAPRDRConnectorType drc_type = spapr_drc_type(drc);
 564     union drc_identifier drc_id;
 565
 566     drc_id.index = spapr_drc_index(drc);
 567     spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX,
 568                             RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id);
 569 }
 570
 571 void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc)
 572 {
 573     sPAPRDRConnectorType drc_type = spapr_drc_type(drc);
 574     union drc_identifier drc_id;
 575
 576     drc_id.index = spapr_drc_index(drc);
 577     spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX,
 578                             RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id);
 579 }
 580
 581 void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType drc_type,
 582                                        uint32_t count)
 583 {
 584     union drc_identifier drc_id;
 585
 586     drc_id.count = count;
 587     spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT,
 588                             RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id);
 589 }
 590
 591 void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type,
 592                                           uint32_t count)
 593 {
 594     union drc_identifier drc_id;
 595
 596     drc_id.count = count;
 597     spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT,
 598                             RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id);
 599 }
 600
 601 void spapr_hotplug_req_add_by_count_indexed(sPAPRDRConnectorType drc_type,
 602                                             uint32_t count, uint32_t index)
 603 {
 604     union drc_identifier drc_id;
 605
 606     drc_id.count_indexed.count = count;
 607     drc_id.count_indexed.index = index;
 608     spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED,
 609                             RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id);
 610 }
 611
 612 void spapr_hotplug_req_remove_by_count_indexed(sPAPRDRConnectorType drc_type,
 613                                                uint32_t count, uint32_t index)
 614 {
 615     union drc_identifier drc_id;
 616
 617     drc_id.count_indexed.count = count;
 618     drc_id.count_indexed.index = index;
 619     spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED,
 620                             RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id);
 621 }
 622
 623 static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr,
 624                             uint32_t token, uint32_t nargs,
 625                             target_ulong args,
 626                             uint32_t nret, target_ulong rets)
 627 {
 628     uint32_t mask, buf, len, event_len;
 629     uint64_t xinfo;
 630     sPAPREventLogEntry *event;
 631     struct rtas_error_log *hdr;
 632     int i;
 633
 634     if ((nargs < 6) || (nargs > 7) || nret != 1) {
 635         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 636         return;
 637     }
 638
 639     xinfo = rtas_ld(args, 1);
 640     mask = rtas_ld(args, 2);
 641     buf = rtas_ld(args, 4);
 642     len = rtas_ld(args, 5);
 643     if (nargs == 7) {
 644         xinfo |= (uint64_t)rtas_ld(args, 6) << 32;
 645     }
 646
 647     event = rtas_event_log_dequeue(mask);
 648     if (!event) {
 649         goto out_no_events;
 650     }
 651
 652     hdr = event->data;
 653     event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr);
 654
 655     if (event_len < len) {
 656         len = event_len;
 657     }
 658
 659     cpu_physical_memory_write(buf, event->data, len);
 660     rtas_st(rets, 0, RTAS_OUT_SUCCESS);
 661     g_free(event->data);
 662     g_free(event);
 663
 664     /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if
 665      * there are still pending events to be fetched via check-exception. We
 666      * do the latter here, since our code relies on edge-triggered
 667      * interrupts.
 668      */
 669     for (i = 0; i < EVENT_CLASS_MAX; i++) {
 670         if (rtas_event_log_contains(EVENT_CLASS_MASK(i))) {
 671             const sPAPREventSource *source =
 672                 spapr_event_sources_get_source(spapr->event_sources, i);
 673
 674             g_assert(source->enabled);
 675             qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr), source->irq));
 676         }
 677     }
 678
 679     return;
 680
 681 out_no_events:
 682     rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND);
 683 }
 684
 685 static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr,
 686                        uint32_t token, uint32_t nargs,
 687                        target_ulong args,
 688                        uint32_t nret, target_ulong rets)
 689 {
 690     if (nargs != 4 || nret != 1) {
 691         rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
 692         return;
 693     }
 694     rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND);
 695 }
 696
 697 void spapr_events_init(sPAPRMachineState *spapr)
 698 {
 699     QTAILQ_INIT(&spapr->pending_events);
 700
 701     spapr->event_sources = spapr_event_sources_new();
 702
 703     spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW,
 704                                  spapr_ics_alloc(spapr->ics, 0, false,
 705                                                   &error_fatal));
 706
 707     /* NOTE: if machine supports modern/dedicated hotplug event source,
 708      * we add it to the device-tree unconditionally. This means we may
 709      * have cases where the source is enabled in QEMU, but unused by the
 710      * guest because it does not support modern hotplug events, so we
 711      * take care to rely on checking for negotiation of OV5_HP_EVT option
 712      * before attempting to use it to signal events, rather than simply
 713      * checking that it's enabled.
 714      */
 715     if (spapr->use_hotplug_event_source) {
 716         spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG,
 717                                      spapr_ics_alloc(spapr->ics, 0, false,
 718                                                       &error_fatal));
 719     }
 720
 721     spapr->epow_notifier.notify = spapr_powerdown_req;
 722     qemu_register_powerdown_notifier(&spapr->epow_notifier);
 723     spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception",
 724                         check_exception);
 725     spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan);
 726 }