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Merge remote-tracking branch 'qemu/master'
[qemu/ar7.git] / hw / ppc / spapr_events.c
blobe377fc7ddea2319e1cebf35615fa10e8a69bb147
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 #define RTAS_LOG_VERSION_MASK 0xff000000
46 #define RTAS_LOG_VERSION_6 0x06000000
47 #define RTAS_LOG_SEVERITY_MASK 0x00e00000
48 #define RTAS_LOG_SEVERITY_ALREADY_REPORTED 0x00c00000
49 #define RTAS_LOG_SEVERITY_FATAL 0x00a00000
50 #define RTAS_LOG_SEVERITY_ERROR 0x00800000
51 #define RTAS_LOG_SEVERITY_ERROR_SYNC 0x00600000
52 #define RTAS_LOG_SEVERITY_WARNING 0x00400000
53 #define RTAS_LOG_SEVERITY_EVENT 0x00200000
54 #define RTAS_LOG_SEVERITY_NO_ERROR 0x00000000
55 #define RTAS_LOG_DISPOSITION_MASK 0x00180000
56 #define RTAS_LOG_DISPOSITION_FULLY_RECOVERED 0x00000000
57 #define RTAS_LOG_DISPOSITION_LIMITED_RECOVERY 0x00080000
58 #define RTAS_LOG_DISPOSITION_NOT_RECOVERED 0x00100000
59 #define RTAS_LOG_OPTIONAL_PART_PRESENT 0x00040000
60 #define RTAS_LOG_INITIATOR_MASK 0x0000f000
61 #define RTAS_LOG_INITIATOR_UNKNOWN 0x00000000
62 #define RTAS_LOG_INITIATOR_CPU 0x00001000
63 #define RTAS_LOG_INITIATOR_PCI 0x00002000
64 #define RTAS_LOG_INITIATOR_MEMORY 0x00004000
65 #define RTAS_LOG_INITIATOR_HOTPLUG 0x00006000
66 #define RTAS_LOG_TARGET_MASK 0x00000f00
67 #define RTAS_LOG_TARGET_UNKNOWN 0x00000000
68 #define RTAS_LOG_TARGET_CPU 0x00000100
69 #define RTAS_LOG_TARGET_PCI 0x00000200
70 #define RTAS_LOG_TARGET_MEMORY 0x00000400
71 #define RTAS_LOG_TARGET_HOTPLUG 0x00000600
72 #define RTAS_LOG_TYPE_MASK 0x000000ff
73 #define RTAS_LOG_TYPE_OTHER 0x00000000
74 #define RTAS_LOG_TYPE_RETRY 0x00000001
75 #define RTAS_LOG_TYPE_TCE_ERR 0x00000002
76 #define RTAS_LOG_TYPE_INTERN_DEV_FAIL 0x00000003
77 #define RTAS_LOG_TYPE_TIMEOUT 0x00000004
78 #define RTAS_LOG_TYPE_DATA_PARITY 0x00000005
79 #define RTAS_LOG_TYPE_ADDR_PARITY 0x00000006
80 #define RTAS_LOG_TYPE_CACHE_PARITY 0x00000007
81 #define RTAS_LOG_TYPE_ADDR_INVALID 0x00000008
82 #define RTAS_LOG_TYPE_ECC_UNCORR 0x00000009
83 #define RTAS_LOG_TYPE_ECC_CORR 0x0000000a
84 #define RTAS_LOG_TYPE_EPOW 0x00000040
85 #define RTAS_LOG_TYPE_HOTPLUG 0x000000e5
86
87 struct rtas_error_log {
88 uint32_t summary;
89 uint32_t extended_length;
90 } QEMU_PACKED;
91
92 struct rtas_event_log_v6 {
93 uint8_t b0;
94 #define RTAS_LOG_V6_B0_VALID 0x80
95 #define RTAS_LOG_V6_B0_UNRECOVERABLE_ERROR 0x40
96 #define RTAS_LOG_V6_B0_RECOVERABLE_ERROR 0x20
97 #define RTAS_LOG_V6_B0_DEGRADED_OPERATION 0x10
98 #define RTAS_LOG_V6_B0_PREDICTIVE_ERROR 0x08
99 #define RTAS_LOG_V6_B0_NEW_LOG 0x04
100 #define RTAS_LOG_V6_B0_BIGENDIAN 0x02
101 uint8_t _resv1;
102 uint8_t b2;
103 #define RTAS_LOG_V6_B2_POWERPC_FORMAT 0x80
104 #define RTAS_LOG_V6_B2_LOG_FORMAT_MASK 0x0f
105 #define RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT 0x0e
106 uint8_t _resv2[9];
107 uint32_t company;
108 #define RTAS_LOG_V6_COMPANY_IBM 0x49424d00 /* IBM<null> */
109 } QEMU_PACKED;
110
111 struct rtas_event_log_v6_section_header {
112 uint16_t section_id;
113 uint16_t section_length;
114 uint8_t section_version;
115 uint8_t section_subtype;
116 uint16_t creator_component_id;
117 } QEMU_PACKED;
118
119 struct rtas_event_log_v6_maina {
120 #define RTAS_LOG_V6_SECTION_ID_MAINA 0x5048 /* PH */
121 struct rtas_event_log_v6_section_header hdr;
122 uint32_t creation_date; /* BCD: YYYYMMDD */
123 uint32_t creation_time; /* BCD: HHMMSS00 */
124 uint8_t _platform1[8];
125 char creator_id;
126 uint8_t _resv1[2];
127 uint8_t section_count;
128 uint8_t _resv2[4];
129 uint8_t _platform2[8];
130 uint32_t plid;
131 uint8_t _platform3[4];
132 } QEMU_PACKED;
133
134 struct rtas_event_log_v6_mainb {
135 #define RTAS_LOG_V6_SECTION_ID_MAINB 0x5548 /* UH */
136 struct rtas_event_log_v6_section_header hdr;
137 uint8_t subsystem_id;
138 uint8_t _platform1;
139 uint8_t event_severity;
140 uint8_t event_subtype;
141 uint8_t _platform2[4];
142 uint8_t _resv1[2];
143 uint16_t action_flags;
144 uint8_t _resv2[4];
145 } QEMU_PACKED;
146
147 struct rtas_event_log_v6_epow {
148 #define RTAS_LOG_V6_SECTION_ID_EPOW 0x4550 /* EP */
149 struct rtas_event_log_v6_section_header hdr;
150 uint8_t sensor_value;
151 #define RTAS_LOG_V6_EPOW_ACTION_RESET 0
152 #define RTAS_LOG_V6_EPOW_ACTION_WARN_COOLING 1
153 #define RTAS_LOG_V6_EPOW_ACTION_WARN_POWER 2
154 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN 3
155 #define RTAS_LOG_V6_EPOW_ACTION_SYSTEM_HALT 4
156 #define RTAS_LOG_V6_EPOW_ACTION_MAIN_ENCLOSURE 5
157 #define RTAS_LOG_V6_EPOW_ACTION_POWER_OFF 7
158 uint8_t event_modifier;
159 #define RTAS_LOG_V6_EPOW_MODIFIER_NORMAL 1
160 #define RTAS_LOG_V6_EPOW_MODIFIER_ON_UPS 2
161 #define RTAS_LOG_V6_EPOW_MODIFIER_CRITICAL 3
162 #define RTAS_LOG_V6_EPOW_MODIFIER_TEMPERATURE 4
163 uint8_t extended_modifier;
164 #define RTAS_LOG_V6_EPOW_XMODIFIER_SYSTEM_WIDE 0
165 #define RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC 1
166 uint8_t _resv;
167 uint64_t reason_code;
168 } QEMU_PACKED;
169
170 struct epow_extended_log {
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_extended_log {
209 struct rtas_event_log_v6 v6hdr;
210 struct rtas_event_log_v6_maina maina;
211 struct rtas_event_log_v6_mainb mainb;
212 struct rtas_event_log_v6_hp hp;
213 } QEMU_PACKED;
214
215 typedef enum EventClass {
216 EVENT_CLASS_INTERNAL_ERRORS = 0,
217 EVENT_CLASS_EPOW = 1,
218 EVENT_CLASS_RESERVED = 2,
219 EVENT_CLASS_HOT_PLUG = 3,
220 EVENT_CLASS_IO = 4,
221 EVENT_CLASS_MAX
222 } EventClassIndex;
223 #define EVENT_CLASS_MASK(index) (1 << (31 - index))
224
225 static const char * const event_names[EVENT_CLASS_MAX] = {
226 [EVENT_CLASS_INTERNAL_ERRORS] = "internal-errors",
227 [EVENT_CLASS_EPOW] = "epow-events",
228 [EVENT_CLASS_HOT_PLUG] = "hot-plug-events",
229 [EVENT_CLASS_IO] = "ibm,io-events",
230 };
231
232 struct sPAPREventSource {
233 int irq;
234 uint32_t mask;
235 bool enabled;
236 };
237
238 static sPAPREventSource *spapr_event_sources_new(void)
239 {
240 return g_new0(sPAPREventSource, EVENT_CLASS_MAX);
241 }
242
243 static void spapr_event_sources_register(sPAPREventSource *event_sources,
244 EventClassIndex index, int irq)
245 {
246 /* we only support 1 irq per event class at the moment */
247 g_assert(event_sources);
248 g_assert(!event_sources[index].enabled);
249 event_sources[index].irq = irq;
250 event_sources[index].mask = EVENT_CLASS_MASK(index);
251 event_sources[index].enabled = true;
252 }
253
254 static const sPAPREventSource *
255 spapr_event_sources_get_source(sPAPREventSource *event_sources,
256 EventClassIndex index)
257 {
258 g_assert(index < EVENT_CLASS_MAX);
259 g_assert(event_sources);
260
261 return &event_sources[index];
262 }
263
264 void spapr_dt_events(sPAPRMachineState *spapr, void *fdt)
265 {
266 uint32_t irq_ranges[EVENT_CLASS_MAX * 2];
267 int i, count = 0, event_sources;
268 sPAPREventSource *events = spapr->event_sources;
269
270 g_assert(events);
271
272 _FDT(event_sources = fdt_add_subnode(fdt, 0, "event-sources"));
273
274 for (i = 0, count = 0; i < EVENT_CLASS_MAX; i++) {
275 int node_offset;
276 uint32_t interrupts[2];
277 const sPAPREventSource *source =
278 spapr_event_sources_get_source(events, i);
279 const char *source_name = event_names[i];
280
281 if (!source->enabled) {
282 continue;
283 }
284
285 interrupts[0] = cpu_to_be32(source->irq);
286 interrupts[1] = 0;
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 irq_ranges[count] = cpu_to_be32(count);
297 count++;
298
299 _FDT((fdt_setprop(fdt, event_sources, "interrupt-controller", NULL, 0)));
300 _FDT((fdt_setprop_cell(fdt, event_sources, "#interrupt-cells", 2)));
301 _FDT((fdt_setprop(fdt, event_sources, "interrupt-ranges",
302 irq_ranges, count * sizeof(uint32_t))));
303 }
304
305 static const sPAPREventSource *
306 rtas_event_log_to_source(sPAPRMachineState *spapr, int log_type)
307 {
308 const sPAPREventSource *source;
309
310 g_assert(spapr->event_sources);
311
312 switch (log_type) {
313 case RTAS_LOG_TYPE_HOTPLUG:
314 source = spapr_event_sources_get_source(spapr->event_sources,
315 EVENT_CLASS_HOT_PLUG);
316 if (spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT)) {
317 g_assert(source->enabled);
318 break;
319 }
320 /* fall back to epow for legacy hotplug interrupt source */
321 case RTAS_LOG_TYPE_EPOW:
322 source = spapr_event_sources_get_source(spapr->event_sources,
323 EVENT_CLASS_EPOW);
324 break;
325 default:
326 source = NULL;
327 }
328
329 return source;
330 }
331
332 static int rtas_event_log_to_irq(sPAPRMachineState *spapr, int log_type)
333 {
334 const sPAPREventSource *source;
335
336 source = rtas_event_log_to_source(spapr, log_type);
337 g_assert(source);
338 g_assert(source->enabled);
339
340 return source->irq;
341 }
342
343 static uint32_t spapr_event_log_entry_type(sPAPREventLogEntry *entry)
344 {
345 return entry->summary & RTAS_LOG_TYPE_MASK;
346 }
347
348 static void rtas_event_log_queue(sPAPRMachineState *spapr,
349 sPAPREventLogEntry *entry)
350 {
351 QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next);
352 }
353
354 static sPAPREventLogEntry *rtas_event_log_dequeue(sPAPRMachineState *spapr,
355 uint32_t event_mask)
356 {
357 sPAPREventLogEntry *entry = NULL;
358
359 QTAILQ_FOREACH(entry, &spapr->pending_events, next) {
360 const sPAPREventSource *source =
361 rtas_event_log_to_source(spapr,
362 spapr_event_log_entry_type(entry));
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,
384 spapr_event_log_entry_type(entry));
385
386 if (source->mask & event_mask) {
387 return true;
388 }
389 }
390
391 return false;
392 }
393
394 static uint32_t next_plid;
395
396 static void spapr_init_v6hdr(struct rtas_event_log_v6 *v6hdr)
397 {
398 v6hdr->b0 = RTAS_LOG_V6_B0_VALID | RTAS_LOG_V6_B0_NEW_LOG
399 | RTAS_LOG_V6_B0_BIGENDIAN;
400 v6hdr->b2 = RTAS_LOG_V6_B2_POWERPC_FORMAT
401 | RTAS_LOG_V6_B2_LOG_FORMAT_PLATFORM_EVENT;
402 v6hdr->company = cpu_to_be32(RTAS_LOG_V6_COMPANY_IBM);
403 }
404
405 static void spapr_init_maina(struct rtas_event_log_v6_maina *maina,
406 int section_count)
407 {
408 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
409 struct tm tm;
410 int year;
411
412 maina->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINA);
413 maina->hdr.section_length = cpu_to_be16(sizeof(*maina));
414 /* FIXME: section version, subtype and creator id? */
415 spapr_rtc_read(&spapr->rtc, &tm, NULL);
416 year = tm.tm_year + 1900;
417 maina->creation_date = cpu_to_be32((to_bcd(year / 100) << 24)
418 | (to_bcd(year % 100) << 16)
419 | (to_bcd(tm.tm_mon + 1) << 8)
420 | to_bcd(tm.tm_mday));
421 maina->creation_time = cpu_to_be32((to_bcd(tm.tm_hour) << 24)
422 | (to_bcd(tm.tm_min) << 16)
423 | (to_bcd(tm.tm_sec) << 8));
424 maina->creator_id = 'H'; /* Hypervisor */
425 maina->section_count = section_count;
426 maina->plid = next_plid++;
427 }
428
429 static void spapr_powerdown_req(Notifier *n, void *opaque)
430 {
431 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
432 sPAPREventLogEntry *entry;
433 struct rtas_event_log_v6 *v6hdr;
434 struct rtas_event_log_v6_maina *maina;
435 struct rtas_event_log_v6_mainb *mainb;
436 struct rtas_event_log_v6_epow *epow;
437 struct epow_extended_log *new_epow;
438
439 entry = g_new(sPAPREventLogEntry, 1);
440 new_epow = g_malloc0(sizeof(*new_epow));
441 entry->extended_log = new_epow;
442
443 v6hdr = &new_epow->v6hdr;
444 maina = &new_epow->maina;
445 mainb = &new_epow->mainb;
446 epow = &new_epow->epow;
447
448 entry->summary = RTAS_LOG_VERSION_6
449 | RTAS_LOG_SEVERITY_EVENT
450 | RTAS_LOG_DISPOSITION_NOT_RECOVERED
451 | RTAS_LOG_OPTIONAL_PART_PRESENT
452 | RTAS_LOG_TYPE_EPOW;
453 entry->extended_length = sizeof(*new_epow);
454
455 spapr_init_v6hdr(v6hdr);
456 spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */);
457
458 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
459 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
460 /* FIXME: section version, subtype and creator id? */
461 mainb->subsystem_id = 0xa0; /* External environment */
462 mainb->event_severity = 0x00; /* Informational / non-error */
463 mainb->event_subtype = 0xd0; /* Normal shutdown */
464
465 epow->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_EPOW);
466 epow->hdr.section_length = cpu_to_be16(sizeof(*epow));
467 epow->hdr.section_version = 2; /* includes extended modifier */
468 /* FIXME: section subtype and creator id? */
469 epow->sensor_value = RTAS_LOG_V6_EPOW_ACTION_SYSTEM_SHUTDOWN;
470 epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL;
471 epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC;
472
473 rtas_event_log_queue(spapr, entry);
474
475 qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr),
476 rtas_event_log_to_irq(spapr,
477 RTAS_LOG_TYPE_EPOW)));
478 }
479
480 static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action,
481 sPAPRDRConnectorType drc_type,
482 union drc_identifier *drc_id)
483 {
484 sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine());
485 sPAPREventLogEntry *entry;
486 struct hp_extended_log *new_hp;
487 struct rtas_event_log_v6 *v6hdr;
488 struct rtas_event_log_v6_maina *maina;
489 struct rtas_event_log_v6_mainb *mainb;
490 struct rtas_event_log_v6_hp *hp;
491
492 entry = g_new(sPAPREventLogEntry, 1);
493 new_hp = g_malloc0(sizeof(struct hp_extended_log));
494 entry->extended_log = new_hp;
495
496 v6hdr = &new_hp->v6hdr;
497 maina = &new_hp->maina;
498 mainb = &new_hp->mainb;
499 hp = &new_hp->hp;
500
501 entry->summary = RTAS_LOG_VERSION_6
502 | RTAS_LOG_SEVERITY_EVENT
503 | RTAS_LOG_DISPOSITION_NOT_RECOVERED
504 | RTAS_LOG_OPTIONAL_PART_PRESENT
505 | RTAS_LOG_INITIATOR_HOTPLUG
506 | RTAS_LOG_TYPE_HOTPLUG;
507 entry->extended_length = sizeof(*new_hp);
508
509 spapr_init_v6hdr(v6hdr);
510 spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */);
511
512 mainb->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_MAINB);
513 mainb->hdr.section_length = cpu_to_be16(sizeof(*mainb));
514 mainb->subsystem_id = 0x80; /* External environment */
515 mainb->event_severity = 0x00; /* Informational / non-error */
516 mainb->event_subtype = 0x00; /* Normal shutdown */
517
518 hp->hdr.section_id = cpu_to_be16(RTAS_LOG_V6_SECTION_ID_HOTPLUG);
519 hp->hdr.section_length = cpu_to_be16(sizeof(*hp));
520 hp->hdr.section_version = 1; /* includes extended modifier */
521 hp->hotplug_action = hp_action;
522 hp->hotplug_identifier = hp_id;
523
524 switch (drc_type) {
525 case SPAPR_DR_CONNECTOR_TYPE_PCI:
526 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_PCI;
527 break;
528 case SPAPR_DR_CONNECTOR_TYPE_LMB:
529 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_MEMORY;
530 break;
531 case SPAPR_DR_CONNECTOR_TYPE_CPU:
532 hp->hotplug_type = RTAS_LOG_V6_HP_TYPE_CPU;
533 break;
534 default:
535 /* we shouldn't be signaling hotplug events for resources
536 * that don't support them
537 */
538 g_assert(false);
539 return;
540 }
541
542 if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT) {
543 hp->drc_id.count = cpu_to_be32(drc_id->count);
544 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_INDEX) {
545 hp->drc_id.index = cpu_to_be32(drc_id->index);
546 } else if (hp_id == RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED) {
547 /* we should not be using count_indexed value unless the guest
548 * supports dedicated hotplug event source
549 */
550 g_assert(spapr_ovec_test(spapr->ov5_cas, OV5_HP_EVT));
551 hp->drc_id.count_indexed.count =
552 cpu_to_be32(drc_id->count_indexed.count);
553 hp->drc_id.count_indexed.index =
554 cpu_to_be32(drc_id->count_indexed.index);
555 }
556
557 rtas_event_log_queue(spapr, entry);
558
559 qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr),
560 rtas_event_log_to_irq(spapr,
561 RTAS_LOG_TYPE_HOTPLUG)));
562 }
563
564 void spapr_hotplug_req_add_by_index(sPAPRDRConnector *drc)
565 {
566 sPAPRDRConnectorType drc_type = spapr_drc_type(drc);
567 union drc_identifier drc_id;
568
569 drc_id.index = spapr_drc_index(drc);
570 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX,
571 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id);
572 }
573
574 void spapr_hotplug_req_remove_by_index(sPAPRDRConnector *drc)
575 {
576 sPAPRDRConnectorType drc_type = spapr_drc_type(drc);
577 union drc_identifier drc_id;
578
579 drc_id.index = spapr_drc_index(drc);
580 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_INDEX,
581 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id);
582 }
583
584 void spapr_hotplug_req_add_by_count(sPAPRDRConnectorType drc_type,
585 uint32_t count)
586 {
587 union drc_identifier drc_id;
588
589 drc_id.count = count;
590 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT,
591 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id);
592 }
593
594 void spapr_hotplug_req_remove_by_count(sPAPRDRConnectorType drc_type,
595 uint32_t count)
596 {
597 union drc_identifier drc_id;
598
599 drc_id.count = count;
600 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT,
601 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id);
602 }
603
604 void spapr_hotplug_req_add_by_count_indexed(sPAPRDRConnectorType drc_type,
605 uint32_t count, uint32_t index)
606 {
607 union drc_identifier drc_id;
608
609 drc_id.count_indexed.count = count;
610 drc_id.count_indexed.index = index;
611 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED,
612 RTAS_LOG_V6_HP_ACTION_ADD, drc_type, &drc_id);
613 }
614
615 void spapr_hotplug_req_remove_by_count_indexed(sPAPRDRConnectorType drc_type,
616 uint32_t count, uint32_t index)
617 {
618 union drc_identifier drc_id;
619
620 drc_id.count_indexed.count = count;
621 drc_id.count_indexed.index = index;
622 spapr_hotplug_req_event(RTAS_LOG_V6_HP_ID_DRC_COUNT_INDEXED,
623 RTAS_LOG_V6_HP_ACTION_REMOVE, drc_type, &drc_id);
624 }
625
626 static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr,
627 uint32_t token, uint32_t nargs,
628 target_ulong args,
629 uint32_t nret, target_ulong rets)
630 {
631 uint32_t mask, buf, len, event_len;
632 uint64_t xinfo;
633 sPAPREventLogEntry *event;
634 struct rtas_error_log header;
635 int i;
636
637 if ((nargs < 6) || (nargs > 7) || nret != 1) {
638 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
639 return;
640 }
641
642 xinfo = rtas_ld(args, 1);
643 mask = rtas_ld(args, 2);
644 buf = rtas_ld(args, 4);
645 len = rtas_ld(args, 5);
646 if (nargs == 7) {
647 xinfo |= (uint64_t)rtas_ld(args, 6) << 32;
648 }
649
650 event = rtas_event_log_dequeue(spapr, mask);
651 if (!event) {
652 goto out_no_events;
653 }
654
655 event_len = event->extended_length + sizeof(header);
656
657 if (event_len < len) {
658 len = event_len;
659 }
660
661 header.summary = cpu_to_be32(event->summary);
662 header.extended_length = cpu_to_be32(event->extended_length);
663 cpu_physical_memory_write(buf, &header, sizeof(header));
664 cpu_physical_memory_write(buf + sizeof(header), event->extended_log,
665 event->extended_length);
666 rtas_st(rets, 0, RTAS_OUT_SUCCESS);
667 g_free(event->extended_log);
668 g_free(event);
669
670 /* according to PAPR+, the IRQ must be left asserted, or re-asserted, if
671 * there are still pending events to be fetched via check-exception. We
672 * do the latter here, since our code relies on edge-triggered
673 * interrupts.
674 */
675 for (i = 0; i < EVENT_CLASS_MAX; i++) {
676 if (rtas_event_log_contains(EVENT_CLASS_MASK(i))) {
677 const sPAPREventSource *source =
678 spapr_event_sources_get_source(spapr->event_sources, i);
679
680 g_assert(source->enabled);
681 qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr), source->irq));
682 }
683 }
684
685 return;
686
687 out_no_events:
688 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND);
689 }
690
691 static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr,
692 uint32_t token, uint32_t nargs,
693 target_ulong args,
694 uint32_t nret, target_ulong rets)
695 {
696 if (nargs != 4 || nret != 1) {
697 rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR);
698 return;
699 }
700 rtas_st(rets, 0, RTAS_OUT_NO_ERRORS_FOUND);
701 }
702
703 void spapr_clear_pending_events(sPAPRMachineState *spapr)
704 {
705 sPAPREventLogEntry *entry = NULL, *next_entry;
706
707 QTAILQ_FOREACH_SAFE(entry, &spapr->pending_events, next, next_entry) {
708 QTAILQ_REMOVE(&spapr->pending_events, entry, next);
709 g_free(entry->extended_log);
710 g_free(entry);
711 }
712 }
713
714 void spapr_events_init(sPAPRMachineState *spapr)
715 {
716 QTAILQ_INIT(&spapr->pending_events);
717
718 spapr->event_sources = spapr_event_sources_new();
719
720 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_EPOW,
721 spapr_ics_alloc(spapr->ics, 0, false,
722 &error_fatal));
723
724 /* NOTE: if machine supports modern/dedicated hotplug event source,
725 * we add it to the device-tree unconditionally. This means we may
726 * have cases where the source is enabled in QEMU, but unused by the
727 * guest because it does not support modern hotplug events, so we
728 * take care to rely on checking for negotiation of OV5_HP_EVT option
729 * before attempting to use it to signal events, rather than simply
730 * checking that it's enabled.
731 */
732 if (spapr->use_hotplug_event_source) {
733 spapr_event_sources_register(spapr->event_sources, EVENT_CLASS_HOT_PLUG,
734 spapr_ics_alloc(spapr->ics, 0, false,
735 &error_fatal));
736 }
737
738 spapr->epow_notifier.notify = spapr_powerdown_req;
739 qemu_register_powerdown_notifier(&spapr->epow_notifier);
740 spapr_rtas_register(RTAS_CHECK_EXCEPTION, "check-exception",
741 check_exception);
742 spapr_rtas_register(RTAS_EVENT_SCAN, "event-scan", event_scan);
743 }
AR7 emulation for QEMU