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Merge remote-tracking branch 'remotes/stsquad/tags/pull-softfloat-headers-190819...
[qemu/ar7.git] / hw / ppc / spapr_events.c
blob163a6cd25b453986948a00995c2a9cab73220b3d
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
28 #include "qemu/osdep.h"
29 #include "qapi/error.h"
30 #include "cpu.h"
31 #include "sysemu/device_tree.h"
32 #include "sysemu/runstate.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/irq.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 "hw/ppc/spapr_ovec.h"
44 #include <libfdt.h>
45
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
88 struct rtas_error_log {
89 uint32_t summary;
90 uint32_t extended_length;
91 } QEMU_PACKED;
92
93 struct rtas_event_log_v6 {
94 uint8_t b0;
95 #define RTAS_LOG_V6_B0_VALID 0x80
96 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40
97 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20
98 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10
99 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08
100 #define RTAS_LOG_V6_B0_NEW_LOG 0x04
101 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02
102 uint8_t _resv1;
103 uint8_t b2;
104 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80
105 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f
106 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e
107 uint8_t _resv2[9];
108 uint32_t company;
109 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */
110 } QEMU_PACKED;
111
112 struct rtas_event_log_v6_section_header {
113 uint16_t section_id;
114 uint16_t section_length;
115 uint8_t section_version;
116 uint8_t section_subtype;
117 uint16_t creator_component_id;
118 } QEMU_PACKED;
119
120 struct rtas_event_log_v6_maina {
121 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */
122 struct rtas_event_log_v6_section_header hdr;
123 uint32_t creation_date; /* BCD: YYYYMMDD */
124 uint32_t creation_time; /* BCD: HHMMSS00 */
125 uint8_t _platform1[8];
126 char creator_id;
127 uint8_t _resv1[2];
128 uint8_t section_count;
129 uint8_t _resv2[4];
130 uint8_t _platform2[8];
131 uint32_t plid;
132 uint8_t _platform3[4];
133 } QEMU_PACKED;
134
135 struct rtas_event_log_v6_mainb {
136 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */
137 struct rtas_event_log_v6_section_header hdr;
138 uint8_t subsystem_id;
139 uint8_t _platform1;
140 uint8_t event_severity;
141 uint8_t event_subtype;
142 uint8_t _platform2[4];
143 uint8_t _resv1[2];
144 uint16_t action_flags;
145 uint8_t _resv2[4];
146 } QEMU_PACKED;
147
148 struct rtas_event_log_v6_epow {
149 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */
150 struct rtas_event_log_v6_section_header hdr;
151 uint8_t sensor_value;
152 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0
153 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1
154 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2
155 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3
156 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4
157 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5
158 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7
159 uint8_t event_modifier;
160 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1
161 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2
162 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3
163 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4
164 uint8_t extended_modifier;
165 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0
166 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1
167 uint8_t _resv;
168 uint64_t reason_code;
169 } QEMU_PACKED;
170
171 struct epow_extended_log {
172 struct rtas_event_log_v6 v6hdr;
173 struct rtas_event_log_v6_maina maina;
174 struct rtas_event_log_v6_mainb mainb;
175 struct rtas_event_log_v6_epow epow;
176 } QEMU_PACKED;
177
178 union drc_identifier {
179 uint32_t index;
180 uint32_t count;
181 struct {
182 uint32_t count;
183 uint32_t index;
184 } count_indexed;
185 char name[1];
186 } QEMU_PACKED;
187
188 struct rtas_event_log_v6_hp {
189 #define RTAS_LOG_V6_SECTION_ID_HOTPLUG 0x4850 /* HP */
190 struct rtas_event_log_v6_section_header hdr;
191 uint8_t hotplug_type;
192 #define RTAS_LOG_V6_HP_TYPE_CPU 1
193 #define RTAS_LOG_V6_HP_TYPE_MEMORY 2
194 #define RTAS_LOG_V6_HP_TYPE_SLOT 3
195 #define RTAS_LOG_V6_HP_TYPE_PHB 4
196 #define RTAS_LOG_V6_HP_TYPE_PCI 5
197 uint8_t hotplug_action;
198 #define RTAS_LOG_V6_HP_ACTION_ADD 1
199 #define RTAS_LOG_V6_HP_ACTION_REMOVE 2
200 uint8_t hotplug_identifier;
201 #define RTAS_LOG_V6_HP_ID_DRC_NAME 1
202 #define RTAS_LOG_V6_HP_ID_DRC_INDEX 2
203 #define RTAS_LOG_V6_HP_ID_DRC_COUNT 3
204 #define RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED 4
205 uint8_t reserved;
206 union drc_identifier drc_id;
207 } QEMU_PACKED;
208
209 struct hp_extended_log {
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 spapr_dt_irq(interrupts, source->irq, false);
287
288 _FDT(node_offset = fdt_add_subnode(fdt, event_sources, source_name));
289 _FDT(fdt_setprop(fdt, node_offset, "interrupts", interrupts,
290 sizeof(interrupts)));
291
292 irq_ranges[count++] = interrupts[0];
293 irq_ranges[count++] = cpu_to_be32(1);
294 }
295
296 _FDT((fdt_setprop(fdt, event_sources, "interrupt-controller", NULL, 0)));
297 _FDT((fdt_setprop_cell(fdt, event_sources, "#interrupt-cells", 2)));
298 _FDT((fdt_setprop(fdt, event_sources, "interrupt-ranges",
299 irq_ranges, count * sizeof(uint32_t))));
300 }
301
302 static const SpaprEventSource *
303 rtas_event_log_to_source(SpaprMachineState *spapr, int log_type)
304 {
305 const SpaprEventSource *source;
306
307 g_assert(spapr->event_sources);
308
309 switch (log_type) {
310 case RTAS_LOG_TYPE_HOTPLUG:
311 source = spapr_event_sources_get_source(spapr->event_sources,
312 EVENT_CLASS_HOT_PLUG);
313 if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) {
314 g_assert(source->enabled);
315 break;
316 }
317 /* fall back to epow for legacy hotplug interrupt source */
318 case RTAS_LOG_TYPE_EPOW:
319 source = spapr_event_sources_get_source(spapr->event_sources,
320 EVENT_CLASS_EPOW);
321 break;
322 default:
323 source = NULL;
324 }
325
326 return source;
327 }
328
329 static int rtas_event_log_to_irq(SpaprMachineState *spapr, int log_type)
330 {
331 const SpaprEventSource *source;
332
333 source = rtas_event_log_to_source(spapr, log_type);
334 g_assert(source);
335 g_assert(source->enabled);
336
337 return source->irq;
338 }
339
340 static uint32_t spapr_event_log_entry_type(SpaprEventLogEntry *entry)
341 {
342 return entry->summary & RTAS_LOG_TYPE_MASK;
343 }
344
345 static void rtas_event_log_queue(SpaprMachineState *spapr,
346 SpaprEventLogEntry *entry)
347 {
348 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next);
349 }
350
351 static SpaprEventLogEntry *rtas_event_log_dequeue(SpaprMachineState *spapr,
352 uint32_t event_mask)
353 {
354 SpaprEventLogEntry *entry = NULL;
355
356 QTAILQ_FOREACH(entry, &spapr->pending_events, next) {
357 const SpaprEventSource *source =
358 rtas_event_log_to_source(spapr,
359 spapr_event_log_entry_type(entry));
360
361 if (source->mask & event_mask) {
362 break;
363 }
364 }
365
366 if (entry) {
367 QTAILQ_REMOVE(&spapr->pending_events, entry, next);
368 }
369
370 return entry;
371 }
372
373 static bool rtas_event_log_contains(uint32_t event_mask)
374 {
375 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
376 SpaprEventLogEntry *entry = NULL;
377
378 QTAILQ_FOREACH(entry, &spapr->pending_events, next) {
379 const SpaprEventSource *source =
380 rtas_event_log_to_source(spapr,
381 spapr_event_log_entry_type(entry));
382
383 if (source->mask & event_mask) {
384 return true;
385 }
386 }
387
388 return false;
389 }
390
391 static uint32_t next_plid;
392
393 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr)
394 {
395 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG
396 | RTAS_LOG_V6_B0_BIGENDIAN;
397 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT
398 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT;
399 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM);
400 }
401
402 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina,
403 int section_count)
404 {
405 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
406 struct tm tm;
407 int year;
408
409 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA);
410 maina->hdr.section_length = cpu_to_be16(sizeof(*maina));
411 /* FIXME: section version, subtype and creator id? */
412 spapr_rtc_read(&spapr->rtc, &tm, NULL);
413 year = tm.tm_year + 1900;
414 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24)
415 | (to_bcd(year % 100) << 16)
416 | (to_bcd(tm.tm_mon + 1) << 8)
417 | to_bcd(tm.tm_mday));
418 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24)
419 | (to_bcd(tm.tm_min) << 16)
420 | (to_bcd(tm.tm_sec) << 8));
421 maina->creator_id = 'H'; /* Hypervisor */
422 maina->section_count = section_count;
423 maina->plid = next_plid++;
424 }
425
426 static void spapr_powerdown_req(Notifier *n, void *opaque)
427 {
428 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
429 SpaprEventLogEntry *entry;
430 struct rtas_event_log_v6 *v6hdr;
431 struct rtas_event_log_v6_maina *maina;
432 struct rtas_event_log_v6_mainb *mainb;
433 struct rtas_event_log_v6_epow *epow;
434 struct epow_extended_log *new_epow;
435
436 entry = g_new(SpaprEventLogEntry, 1);
437 new_epow = g_malloc0(sizeof(*new_epow));
438 entry->extended_log = new_epow;
439
440 v6hdr = &new_epow->v6hdr;
441 maina = &new_epow->maina;
442 mainb = &new_epow->mainb;
443 epow = &new_epow->epow;
444
445 entry->summary = 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 entry->extended_length = sizeof(*new_epow);
451
452 spapr_init_v6hdr(v6hdr);
453 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */);
454
455 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
456 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
457 /* FIXME: section version, subtype and creator id? */
458 mainb->subsystem_id = 0xa0; /* External environment */
459 mainb->event_severity = 0x00; /* Informational / non-error */
460 mainb->event_subtype = 0xd0; /* Normal shutdown */
461
462 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW);
463 epow->hdr.section_length = cpu_to_be16(sizeof(*epow));
464 epow->hdr.section_version = 2; /* includes extended modifier */
465 /* FIXME: section subtype and creator id? */
466 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN;
467 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL;
468 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC;
469
470 rtas_event_log_queue(spapr, entry);
471
472 qemu_irq_pulse(spapr_qirq(spapr,
473 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_EPOW)));
474 }
475
476 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action,
477 SpaprDrcType drc_type,
478 union drc_identifier *drc_id)
479 {
480 SpaprMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
481 SpaprEventLogEntry *entry;
482 struct hp_extended_log *new_hp;
483 struct rtas_event_log_v6 *v6hdr;
484 struct rtas_event_log_v6_maina *maina;
485 struct rtas_event_log_v6_mainb *mainb;
486 struct rtas_event_log_v6_hp *hp;
487
488 entry = g_new(SpaprEventLogEntry, 1);
489 new_hp = g_malloc0(sizeof(struct hp_extended_log));
490 entry->extended_log = new_hp;
491
492 v6hdr = &new_hp->v6hdr;
493 maina = &new_hp->maina;
494 mainb = &new_hp->mainb;
495 hp = &new_hp->hp;
496
497 entry->summary = 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 entry->extended_length = sizeof(*new_hp);
504
505 spapr_init_v6hdr(v6hdr);
506 spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */);
507
508 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
509 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
510 mainb->subsystem_id = 0x80; /* External environment */
511 mainb->event_severity = 0x00; /* Informational / non-error */
512 mainb->event_subtype = 0x00; /* Normal shutdown */
513
514 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG);
515 hp->hdr.section_length = cpu_to_be16(sizeof(*hp));
516 hp->hdr.section_version = 1; /* includes extended modifier */
517 hp->hotplug_action = hp_action;
518 hp->hotplug_identifier = hp_id;
519
520 switch (drc_type) {
521 case SPAPR_DR_CONNECTOR_TYPE_PCI:
522 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI;
523 break;
524 case SPAPR_DR_CONNECTOR_TYPE_LMB:
525 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY;
526 break;
527 case SPAPR_DR_CONNECTOR_TYPE_CPU:
528 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU;
529 break;
530 case SPAPR_DR_CONNECTOR_TYPE_PHB:
531 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PHB;
532 break;
533 default:
534 /* we shouldn't be signaling hotplug events for resources
535 * that don't support them
536 */
537 g_assert(false);
538 return;
539 }
540
541 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) {
542 hp->drc_id.count = cpu_to_be32(drc_id->count);
543 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) {
544 hp->drc_id.index = cpu_to_be32(drc_id->index);
545 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED) {
546 /* we should not be using count_indexed value unless the guest
547 * supports dedicated hotplug event source
548 */
549 g_assert(spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT));
550 hp->drc_id.count_indexed.count =
551 cpu_to_be32(drc_id->count_indexed.count);
552 hp->drc_id.count_indexed.index =
553 cpu_to_be32(drc_id->count_indexed.index);
554 }
555
556 rtas_event_log_queue(spapr, entry);
557
558 qemu_irq_pulse(spapr_qirq(spapr,
559 rtas_event_log_to_irq(spapr, RTAS_LOG_TYPE_HOTPLUG)));
560 }
561
562 void spapr_hotplug_req_add_by_index(SpaprDrc *drc)
563 {
564 SpaprDrcType drc_type = spapr_drc_type(drc);
565 union drc_identifier drc_id;
566
567 drc_id.index = spapr_drc_index(drc);
568 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX,
569 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id);
570 }
571
572 void spapr_hotplug_req_remove_by_index(SpaprDrc *drc)
573 {
574 SpaprDrcType drc_type = spapr_drc_type(drc);
575 union drc_identifier drc_id;
576
577 drc_id.index = spapr_drc_index(drc);
578 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX,
579 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id);
580 }
581
582 void spapr_hotplug_req_add_by_count(SpaprDrcType drc_type,
583 uint32_t count)
584 {
585 union drc_identifier drc_id;
586
587 drc_id.count = count;
588 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT,
589 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id);
590 }
591
592 void spapr_hotplug_req_remove_by_count(SpaprDrcType drc_type,
593 uint32_t count)
594 {
595 union drc_identifier drc_id;
596
597 drc_id.count = count;
598 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT,
599 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id);
600 }
601
602 void spapr_hotplug_req_add_by_count_indexed(SpaprDrcType drc_type,
603 uint32_t count, uint32_t index)
604 {
605 union drc_identifier drc_id;
606
607 drc_id.count_indexed.count = count;
608 drc_id.count_indexed.index = index;
609 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED,
610 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id);
611 }
612
613 void spapr_hotplug_req_remove_by_count_indexed(SpaprDrcType drc_type,
614 uint32_t count, uint32_t index)
615 {
616 union drc_identifier drc_id;
617
618 drc_id.count_indexed.count = count;
619 drc_id.count_indexed.index = index;
620 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED,
621 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id);
622 }
623
624 static void check_exception(PowerPCCPU *cpu, SpaprMachineState *spapr,
625 uint32_t token, uint32_t nargs,
626 target_ulong args,
627 uint32_t nret, target_ulong rets)
628 {
629 uint32_t mask, buf, len, event_len;
630 uint64_t xinfo;
631 SpaprEventLogEntry *event;
632 struct rtas_error_log header;
633 int i;
634
635 if ((nargs < 6) || (nargs > 7) || nret != 1) {
636 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
637 return;
638 }
639
640 xinfo = rtas_ld(args, 1);
641 mask = rtas_ld(args, 2);
642 buf = rtas_ld(args, 4);
643 len = rtas_ld(args, 5);
644 if (nargs == 7) {
645 xinfo |= (uint64_t)rtas_ld(args, 6) << 32;
646 }
647
648 event = rtas_event_log_dequeue(spapr, mask);
649 if (!event) {
650 goto out_no_events;
651 }
652
653 event_len = event->extended_length + sizeof(header);
654
655 if (event_len < len) {
656 len = event_len;
657 }
658
659 header.summary = cpu_to_be32(event->summary);
660 header.extended_length = cpu_to_be32(event->extended_length);
661 cpu_physical_memory_write(buf, &header, sizeof(header));
662 cpu_physical_memory_write(buf + sizeof(header), event->extended_log,
663 event->extended_length);
664 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
665 g_free(event->extended_log);
666 g_free(event);
667
668 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if
669 * there are still pending events to be fetched via check-exception. We
670 * do the latter here, since our code relies on edge-triggered
671 * interrupts.
672 */
673 for (i = 0; i < EVENT_CLASS_MAX; i++) {
674 if (rtas_event_log_contains(EVENT_CLASS_MASK(i))) {
675 const SpaprEventSource *source =
676 spapr_event_sources_get_source(spapr->event_sources, i);
677
678 g_assert(source->enabled);
679 qemu_irq_pulse(spapr_qirq(spapr, source->irq));
680 }
681 }
682
683 return;
684
685 out_no_events:
686 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND);
687 }
688
689 static void event_scan(PowerPCCPU *cpu, SpaprMachineState *spapr,
690 uint32_t token, uint32_t nargs,
691 target_ulong args,
692 uint32_t nret, target_ulong rets)
693 {
694 if (nargs != 4 || nret != 1) {
695 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
696 return;
697 }
698 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND);
699 }
700
701 void spapr_clear_pending_events(SpaprMachineState *spapr)
702 {
703 SpaprEventLogEntry *entry = NULL, *next_entry;
704
705 QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) {
706 QTAILQ_REMOVE(&spapr->pending_events, entry, next);
707 g_free(entry->extended_log);
708 g_free(entry);
709 }
710 }
711
712 void spapr_events_init(SpaprMachineState *spapr)
713 {
714 int epow_irq = SPAPR_IRQ_EPOW;
715
716 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) {
717 epow_irq = spapr_irq_findone(spapr, &error_fatal);
718 }
719
720 spapr_irq_claim(spapr, epow_irq, false, &error_fatal);
721
722 QTAILQ_INIT(&spapr->pending_events);
723
724 spapr->event_sources = spapr_event_sources_new();
725
726 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW,
727 epow_irq);
728
729 /* NOTE: if machine supports modern/dedicated hotplug event source,
730 * we add it to the device-tree unconditionally. This means we may
731 * have cases where the source is enabled in QEMU, but unused by the
732 * guest because it does not support modern hotplug events, so we
733 * take care to rely on checking for negotiation of OV5_HP_EVT option
734 * before attempting to use it to signal events, rather than simply
735 * checking that it's enabled.
736 */
737 if (spapr->use_hotplug_event_source) {
738 int hp_irq = SPAPR_IRQ_HOTPLUG;
739
740 if (SPAPR_MACHINE_GET_CLASS(spapr)->legacy_irq_allocation) {
741 hp_irq = spapr_irq_findone(spapr, &error_fatal);
742 }
743
744 spapr_irq_claim(spapr, hp_irq, false, &error_fatal);
745
746 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG,
747 hp_irq);
748 }
749
750 spapr->epow_notifier.notify = spapr_powerdown_req;
751 qemu_register_powerdown_notifier(&spapr->epow_notifier);
752 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception",
753 check_exception);
754 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan);
755 }
AR7 emulation for QEMU