1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
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#include "qemu/help_option.h"
41#include "qemu/bcd.h"
42#include <libfdt.h>
43
44struct rtas_error_log {
45 uint32_t summary;
46#define RTAS_LOG_VERSION_MASK 0xff000000
47#define RTAS_LOG_VERSION_6 0x06000000
48#define RTAS_LOG_SEVERITY_MASK 0x00e00000
49#define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000
50#define RTAS_LOG_SEVERITY_FATAL 0x00a00000
51#define RTAS_LOG_SEVERITY_ERROR 0x00800000
52#define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000
53#define RTAS_LOG_SEVERITY_WARNING 0x00400000
54#define RTAS_LOG_SEVERITY_EVENT 0x00200000
55#define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000
56#define RTAS_LOG_DISPOSITION_MASK 0x00180000
57#define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000
58#define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000
59#define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000
60#define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000
61#define RTAS_LOG_INITIATOR_MASK 0x0000f000
62#define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000
63#define RTAS_LOG_INITIATOR_CPU 0x00001000
64#define RTAS_LOG_INITIATOR_PCI 0x00002000
65#define RTAS_LOG_INITIATOR_MEMORY 0x00004000
66#define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000
67#define RTAS_LOG_TARGET_MASK 0x00000f00
68#define RTAS_LOG_TARGET_UNKNOWN 0x00000000
69#define RTAS_LOG_TARGET_CPU 0x00000100
70#define RTAS_LOG_TARGET_PCI 0x00000200
71#define RTAS_LOG_TARGET_MEMORY 0x00000400
72#define RTAS_LOG_TARGET_HOTPLUG 0x00000600
73#define RTAS_LOG_TYPE_MASK 0x000000ff
74#define RTAS_LOG_TYPE_OTHER 0x00000000
75#define RTAS_LOG_TYPE_RETRY 0x00000001
76#define RTAS_LOG_TYPE_TCE_ERR 0x00000002
77#define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003
78#define RTAS_LOG_TYPE_TIMEOUT 0x00000004
79#define RTAS_LOG_TYPE_DATA_PARITY 0x00000005
80#define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006
81#define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007
82#define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008
83#define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009
84#define RTAS_LOG_TYPE_ECC_CORR 0x0000000a
85#define RTAS_LOG_TYPE_EPOW 0x00000040
86#define RTAS_LOG_TYPE_HOTPLUG 0x000000e5
87 uint32_t extended_length;
88} QEMU_PACKED;
89
90struct rtas_event_log_v6 {
91 uint8_t b0;
92#define RTAS_LOG_V6_B0_VALID 0x80
93#define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40
94#define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20
95#define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10
96#define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08
97#define RTAS_LOG_V6_B0_NEW_LOG 0x04
98#define RTAS_LOG_V6_B0_BIGENDIAN 0x02
99 uint8_t _resv1;
100 uint8_t b2;
101#define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80
102#define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f
103#define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e
104 uint8_t _resv2[9];
105 uint32_t company;
106#define RTAS_LOG_V6_COMPANY_IBM 0x49424d00
107} QEMU_PACKED;
108
109struct rtas_event_log_v6_section_header {
110 uint16_t section_id;
111 uint16_t section_length;
112 uint8_t section_version;
113 uint8_t section_subtype;
114 uint16_t creator_component_id;
115} QEMU_PACKED;
116
117struct rtas_event_log_v6_maina {
118#define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048
119 struct rtas_event_log_v6_section_header hdr;
120 uint32_t creation_date;
121 uint32_t creation_time;
122 uint8_t _platform1[8];
123 char creator_id;
124 uint8_t _resv1[2];
125 uint8_t section_count;
126 uint8_t _resv2[4];
127 uint8_t _platform2[8];
128 uint32_t plid;
129 uint8_t _platform3[4];
130} QEMU_PACKED;
131
132struct rtas_event_log_v6_mainb {
133#define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548
134 struct rtas_event_log_v6_section_header hdr;
135 uint8_t subsystem_id;
136 uint8_t _platform1;
137 uint8_t event_severity;
138 uint8_t event_subtype;
139 uint8_t _platform2[4];
140 uint8_t _resv1[2];
141 uint16_t action_flags;
142 uint8_t _resv2[4];
143} QEMU_PACKED;
144
145struct rtas_event_log_v6_epow {
146#define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550
147 struct rtas_event_log_v6_section_header hdr;
148 uint8_t sensor_value;
149#define RTAS_LOG_V6_EPOW_ACTION_RESET 0
150#define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1
151#define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2
152#define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3
153#define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4
154#define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5
155#define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7
156 uint8_t event_modifier;
157#define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1
158#define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2
159#define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3
160#define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4
161 uint8_t extended_modifier;
162#define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0
163#define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1
164 uint8_t _resv;
165 uint64_t reason_code;
166} QEMU_PACKED;
167
168struct epow_log_full {
169 struct rtas_error_log hdr;
170 struct rtas_event_log_v6 v6hdr;
171 struct rtas_event_log_v6_maina maina;
172 struct rtas_event_log_v6_mainb mainb;
173 struct rtas_event_log_v6_epow epow;
174} QEMU_PACKED;
175
176struct rtas_event_log_v6_hp {
177#define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850
178 struct rtas_event_log_v6_section_header hdr;
179 uint8_t hotplug_type;
180#define RTAS_LOG_V6_HP_TYPE_CPU 1
181#define RTAS_LOG_V6_HP_TYPE_MEMORY 2
182#define RTAS_LOG_V6_HP_TYPE_SLOT 3
183#define RTAS_LOG_V6_HP_TYPE_PHB 4
184#define RTAS_LOG_V6_HP_TYPE_PCI 5
185 uint8_t hotplug_action;
186#define RTAS_LOG_V6_HP_ACTION_ADD 1
187#define RTAS_LOG_V6_HP_ACTION_REMOVE 2
188 uint8_t hotplug_identifier;
189#define RTAS_LOG_V6_HP_ID_DRC_NAME 1
190#define RTAS_LOG_V6_HP_ID_DRC_INDEX 2
191#define RTAS_LOG_V6_HP_ID_DRC_COUNT 3
192 uint8_t reserved;
193 union {
194 uint32_t index;
195 uint32_t count;
196 char name[1];
197 } drc;
198} QEMU_PACKED;
199
200struct hp_log_full {
201 struct rtas_error_log hdr;
202 struct rtas_event_log_v6 v6hdr;
203 struct rtas_event_log_v6_maina maina;
204 struct rtas_event_log_v6_mainb mainb;
205 struct rtas_event_log_v6_hp hp;
206} QEMU_PACKED;
207
208#define EVENT_MASK_INTERNAL_ERRORS 0x80000000
209#define EVENT_MASK_EPOW 0x40000000
210#define EVENT_MASK_HOTPLUG 0x10000000
211#define EVENT_MASK_IO 0x08000000
212
213#define _FDT(exp) \
214 do { \
215 int ret = (exp); \
216 if (ret < 0) { \
217 fprintf(stderr, "qemu: error creating device tree: %s: %s\n", \
218 #exp, fdt_strerror(ret)); \
219 exit(1); \
220 } \
221 } while (0)
222
223void spapr_events_fdt_skel(void *fdt, uint32_t check_exception_irq)
224{
225 uint32_t irq_ranges[] = {cpu_to_be32(check_exception_irq), cpu_to_be32(1)};
226 uint32_t interrupts[] = {cpu_to_be32(check_exception_irq), 0};
227
228 _FDT((fdt_begin_node(fdt, "event-sources")));
229
230 _FDT((fdt_property(fdt, "interrupt-controller", NULL, 0)));
231 _FDT((fdt_property_cell(fdt, "#interrupt-cells", 2)));
232 _FDT((fdt_property(fdt, "interrupt-ranges",
233 irq_ranges, sizeof(irq_ranges))));
234
235 _FDT((fdt_begin_node(fdt, "epow-events")));
236 _FDT((fdt_property(fdt, "interrupts", interrupts, sizeof(interrupts))));
237 _FDT((fdt_end_node(fdt)));
238
239 _FDT((fdt_end_node(fdt)));
240}
241
242static void rtas_event_log_queue(int log_type, void *data, bool exception)
243{
244 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
245 sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1);
246
247 g_assert(data);
248 entry->log_type = log_type;
249 entry->exception = exception;
250 entry->data = data;
251 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next);
252}
253
254static sPAPREventLogEntry *rtas_event_log_dequeue(uint32_t event_mask,
255 bool exception)
256{
257 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
258 sPAPREventLogEntry *entry = NULL;
259
260
261 if ((event_mask & EVENT_MASK_EPOW) == 0) {
262 return NULL;
263 }
264
265 QTAILQ_FOREACH(entry, &spapr->pending_events, next) {
266 if (entry->exception != exception) {
267 continue;
268 }
269
270
271 if (entry->log_type == RTAS_LOG_TYPE_EPOW ||
272 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) {
273 break;
274 }
275 }
276
277 if (entry) {
278 QTAILQ_REMOVE(&spapr->pending_events, entry, next);
279 }
280
281 return entry;
282}
283
284static bool rtas_event_log_contains(uint32_t event_mask, bool exception)
285{
286 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
287 sPAPREventLogEntry *entry = NULL;
288
289
290 if ((event_mask & EVENT_MASK_EPOW) == 0) {
291 return false;
292 }
293
294 QTAILQ_FOREACH(entry, &spapr->pending_events, next) {
295 if (entry->exception != exception) {
296 continue;
297 }
298
299
300 if (entry->log_type == RTAS_LOG_TYPE_EPOW ||
301 entry->log_type == RTAS_LOG_TYPE_HOTPLUG) {
302 return true;
303 }
304 }
305
306 return false;
307}
308
309static uint32_t next_plid;
310
311static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr)
312{
313 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG
314 | RTAS_LOG_V6_B0_BIGENDIAN;
315 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT
316 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT;
317 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM);
318}
319
320static void spapr_init_maina(struct rtas_event_log_v6_maina *maina,
321 int section_count)
322{
323 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
324 struct tm tm;
325 int year;
326
327 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA);
328 maina->hdr.section_length = cpu_to_be16(sizeof(*maina));
329
330 spapr_rtc_read(spapr->rtc, &tm, NULL);
331 year = tm.tm_year + 1900;
332 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24)
333 | (to_bcd(year % 100) << 16)
334 | (to_bcd(tm.tm_mon + 1) << 8)
335 | to_bcd(tm.tm_mday));
336 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24)
337 | (to_bcd(tm.tm_min) << 16)
338 | (to_bcd(tm.tm_sec) << 8));
339 maina->creator_id = 'H';
340 maina->section_count = section_count;
341 maina->plid = next_plid++;
342}
343
344static void spapr_powerdown_req(Notifier *n, void *opaque)
345{
346 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
347 struct rtas_error_log *hdr;
348 struct rtas_event_log_v6 *v6hdr;
349 struct rtas_event_log_v6_maina *maina;
350 struct rtas_event_log_v6_mainb *mainb;
351 struct rtas_event_log_v6_epow *epow;
352 struct epow_log_full *new_epow;
353
354 new_epow = g_malloc0(sizeof(*new_epow));
355 hdr = &new_epow->hdr;
356 v6hdr = &new_epow->v6hdr;
357 maina = &new_epow->maina;
358 mainb = &new_epow->mainb;
359 epow = &new_epow->epow;
360
361 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6
362 | RTAS_LOG_SEVERITY_EVENT
363 | RTAS_LOG_DISPOSITION_NOT_RECOVERED
364 | RTAS_LOG_OPTIONAL_PART_PRESENT
365 | RTAS_LOG_TYPE_EPOW);
366 hdr->extended_length = cpu_to_be32(sizeof(*new_epow)
367 - sizeof(new_epow->hdr));
368
369 spapr_init_v6hdr(v6hdr);
370 spapr_init_maina(maina, 3 );
371
372 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
373 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
374
375 mainb->subsystem_id = 0xa0;
376 mainb->event_severity = 0x00;
377 mainb->event_subtype = 0xd0;
378
379 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW);
380 epow->hdr.section_length = cpu_to_be16(sizeof(*epow));
381 epow->hdr.section_version = 2;
382
383 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN;
384 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL;
385 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC;
386
387 rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true);
388
389 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq));
390}
391
392static void spapr_hotplug_set_signalled(uint32_t drc_index)
393{
394 sPAPRDRConnector *drc = spapr_dr_connector_by_index(drc_index);
395 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
396 drck->set_signalled(drc);
397}
398
399static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action,
400 sPAPRDRConnectorType drc_type,
401 uint32_t drc)
402{
403 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
404 struct hp_log_full *new_hp;
405 struct rtas_error_log *hdr;
406 struct rtas_event_log_v6 *v6hdr;
407 struct rtas_event_log_v6_maina *maina;
408 struct rtas_event_log_v6_mainb *mainb;
409 struct rtas_event_log_v6_hp *hp;
410
411 new_hp = g_malloc0(sizeof(struct hp_log_full));
412 hdr = &new_hp->hdr;
413 v6hdr = &new_hp->v6hdr;
414 maina = &new_hp->maina;
415 mainb = &new_hp->mainb;
416 hp = &new_hp->hp;
417
418 hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6
419 | RTAS_LOG_SEVERITY_EVENT
420 | RTAS_LOG_DISPOSITION_NOT_RECOVERED
421 | RTAS_LOG_OPTIONAL_PART_PRESENT
422 | RTAS_LOG_INITIATOR_HOTPLUG
423 | RTAS_LOG_TYPE_HOTPLUG);
424 hdr->extended_length = cpu_to_be32(sizeof(*new_hp)
425 - sizeof(new_hp->hdr));
426
427 spapr_init_v6hdr(v6hdr);
428 spapr_init_maina(maina, 3 );
429
430 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
431 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
432 mainb->subsystem_id = 0x80;
433 mainb->event_severity = 0x00;
434 mainb->event_subtype = 0x00;
435
436 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG);
437 hp->hdr.section_length = cpu_to_be16(sizeof(*hp));
438 hp->hdr.section_version = 1;
439 hp->hotplug_action = hp_action;
440 hp->hotplug_identifier = hp_id;
441
442 switch (drc_type) {
443 case SPAPR_DR_CONNECTOR_TYPE_PCI:
444 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI;
445 if (hp->hotplug_action == RTAS_LOG_V6_HP_ACTION_ADD) {
446 spapr_hotplug_set_signalled(drc);
447 }
448 break;
449 case SPAPR_DR_CONNECTOR_TYPE_LMB:
450 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY;
451 break;
452 default:
453
454
455
456 g_assert(false);
457 return;
458 }
459
460 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) {
461 hp->drc.count = cpu_to_be32(drc);
462 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) {
463 hp->drc.index = cpu_to_be32(drc);
464 }
465
466 rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true);
467
468 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq));
469}
470
471void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc)
472{
473 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
474 sPAPRDRConnectorType drc_type = drck->get_type(drc);
475 uint32_t index = drck->get_index(drc);
476
477 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX,
478 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, index);
479}
480
481void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc)
482{
483 sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc);
484 sPAPRDRConnectorType drc_type = drck->get_type(drc);
485 uint32_t index = drck->get_index(drc);
486
487 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX,
488 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, index);
489}
490
491void spapr_hotplug_req_add_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_ADD, drc_type, count);
496}
497
498void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type,
499 uint32_t count)
500{
501 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT,
502 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, count);
503}
504
505static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr,
506 uint32_t token, uint32_t nargs,
507 target_ulong args,
508 uint32_t nret, target_ulong rets)
509{
510 uint32_t mask, buf, len, event_len;
511 uint64_t xinfo;
512 sPAPREventLogEntry *event;
513 struct rtas_error_log *hdr;
514
515 if ((nargs < 6) || (nargs > 7) || nret != 1) {
516 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
517 return;
518 }
519
520 xinfo = rtas_ld(args, 1);
521 mask = rtas_ld(args, 2);
522 buf = rtas_ld(args, 4);
523 len = rtas_ld(args, 5);
524 if (nargs == 7) {
525 xinfo |= (uint64_t)rtas_ld(args, 6) << 32;
526 }
527
528 event = rtas_event_log_dequeue(mask, true);
529 if (!event) {
530 goto out_no_events;
531 }
532
533 hdr = event->data;
534 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr);
535
536 if (event_len < len) {
537 len = event_len;
538 }
539
540 cpu_physical_memory_write(buf, event->data, len);
541 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
542 g_free(event->data);
543 g_free(event);
544
545
546
547
548
549
550 if (rtas_event_log_contains(mask, true)) {
551 qemu_irq_pulse(xics_get_qirq(spapr->icp, spapr->check_exception_irq));
552 }
553
554 return;
555
556out_no_events:
557 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND);
558}
559
560static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr,
561 uint32_t token, uint32_t nargs,
562 target_ulong args,
563 uint32_t nret, target_ulong rets)
564{
565 uint32_t mask, buf, len, event_len;
566 sPAPREventLogEntry *event;
567 struct rtas_error_log *hdr;
568
569 if (nargs != 4 || nret != 1) {
570 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
571 return;
572 }
573
574 mask = rtas_ld(args, 0);
575 buf = rtas_ld(args, 2);
576 len = rtas_ld(args, 3);
577
578 event = rtas_event_log_dequeue(mask, false);
579 if (!event) {
580 goto out_no_events;
581 }
582
583 hdr = event->data;
584 event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr);
585
586 if (event_len < len) {
587 len = event_len;
588 }
589
590 cpu_physical_memory_write(buf, event->data, len);
591 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
592 g_free(event->data);
593 g_free(event);
594 return;
595
596out_no_events:
597 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND);
598}
599
600void spapr_events_init(sPAPRMachineState *spapr)
601{
602 QTAILQ_INIT(&spapr->pending_events);
603 spapr->check_exception_irq = xics_alloc(spapr->icp, 0, 0, false,
604 &error_fatal);
605 spapr->epow_notifier.notify = spapr_powerdown_req;
606 qemu_register_powerdown_notifier(&spapr->epow_notifier);
607 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception",
608 check_exception);
609 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan);
610}
611
