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1 | /* | |
2 | * QEMU SPAPR Dynamic Reconfiguration Connector Implementation | |
3 | * | |
4 | * Copyright IBM Corp. 2014 | |
5 | * | |
6 | * Authors: | |
7 | * Michael Roth <mdroth@linux.vnet.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU GPL, version 2 or later. | |
10 | * See the COPYING file in the top-level directory. | |
11 | */ | |
12 | ||
13 | #include "qemu/osdep.h" | |
14 | #include "qapi/error.h" | |
15 | #include "qapi/qmp/qnull.h" | |
16 | #include "qemu/cutils.h" | |
17 | #include "hw/ppc/spapr_drc.h" | |
18 | #include "qom/object.h" | |
19 | #include "migration/vmstate.h" | |
20 | #include "qapi/qapi-events-qdev.h" | |
21 | #include "qapi/visitor.h" | |
22 | #include "qemu/error-report.h" | |
23 | #include "hw/ppc/spapr.h" /* for RTAS return codes */ | |
24 | #include "hw/pci-host/spapr.h" /* spapr_phb_remove_pci_device_cb callback */ | |
25 | #include "hw/ppc/spapr_nvdimm.h" | |
26 | #include "sysemu/device_tree.h" | |
27 | #include "sysemu/reset.h" | |
28 | #include "trace.h" | |
29 | ||
30 | #define DRC_CONTAINER_PATH "/dr-connector" | |
31 | #define DRC_INDEX_TYPE_SHIFT 28 | |
32 | #define DRC_INDEX_ID_MASK ((1ULL << DRC_INDEX_TYPE_SHIFT) - 1) | |
33 | ||
34 | SpaprDrcType spapr_drc_type(SpaprDrc *drc) | |
35 | { | |
36 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
37 | ||
38 | return 1 << drck->typeshift; | |
39 | } | |
40 | ||
41 | uint32_t spapr_drc_index(SpaprDrc *drc) | |
42 | { | |
43 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
44 | ||
45 | /* no set format for a drc index: it only needs to be globally | |
46 | * unique. this is how we encode the DRC type on bare-metal | |
47 | * however, so might as well do that here | |
48 | */ | |
49 | return (drck->typeshift << DRC_INDEX_TYPE_SHIFT) | |
50 | | (drc->id & DRC_INDEX_ID_MASK); | |
51 | } | |
52 | ||
53 | static void spapr_drc_release(SpaprDrc *drc) | |
54 | { | |
55 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
56 | ||
57 | drck->release(drc->dev); | |
58 | ||
59 | drc->unplug_requested = false; | |
60 | g_free(drc->fdt); | |
61 | drc->fdt = NULL; | |
62 | drc->fdt_start_offset = 0; | |
63 | object_property_del(OBJECT(drc), "device"); | |
64 | drc->dev = NULL; | |
65 | } | |
66 | ||
67 | static uint32_t drc_isolate_physical(SpaprDrc *drc) | |
68 | { | |
69 | switch (drc->state) { | |
70 | case SPAPR_DRC_STATE_PHYSICAL_POWERON: | |
71 | return RTAS_OUT_SUCCESS; /* Nothing to do */ | |
72 | case SPAPR_DRC_STATE_PHYSICAL_CONFIGURED: | |
73 | break; /* see below */ | |
74 | case SPAPR_DRC_STATE_PHYSICAL_UNISOLATE: | |
75 | return RTAS_OUT_PARAM_ERROR; /* not allowed */ | |
76 | default: | |
77 | g_assert_not_reached(); | |
78 | } | |
79 | ||
80 | drc->state = SPAPR_DRC_STATE_PHYSICAL_POWERON; | |
81 | ||
82 | if (drc->unplug_requested) { | |
83 | uint32_t drc_index = spapr_drc_index(drc); | |
84 | trace_spapr_drc_set_isolation_state_finalizing(drc_index); | |
85 | spapr_drc_release(drc); | |
86 | } | |
87 | ||
88 | return RTAS_OUT_SUCCESS; | |
89 | } | |
90 | ||
91 | static uint32_t drc_unisolate_physical(SpaprDrc *drc) | |
92 | { | |
93 | switch (drc->state) { | |
94 | case SPAPR_DRC_STATE_PHYSICAL_UNISOLATE: | |
95 | case SPAPR_DRC_STATE_PHYSICAL_CONFIGURED: | |
96 | return RTAS_OUT_SUCCESS; /* Nothing to do */ | |
97 | case SPAPR_DRC_STATE_PHYSICAL_POWERON: | |
98 | break; /* see below */ | |
99 | default: | |
100 | g_assert_not_reached(); | |
101 | } | |
102 | ||
103 | /* cannot unisolate a non-existent resource, and, or resources | |
104 | * which are in an 'UNUSABLE' allocation state. (PAPR 2.7, | |
105 | * 13.5.3.5) | |
106 | */ | |
107 | if (!drc->dev) { | |
108 | return RTAS_OUT_NO_SUCH_INDICATOR; | |
109 | } | |
110 | ||
111 | drc->state = SPAPR_DRC_STATE_PHYSICAL_UNISOLATE; | |
112 | drc->ccs_offset = drc->fdt_start_offset; | |
113 | drc->ccs_depth = 0; | |
114 | ||
115 | return RTAS_OUT_SUCCESS; | |
116 | } | |
117 | ||
118 | static uint32_t drc_isolate_logical(SpaprDrc *drc) | |
119 | { | |
120 | switch (drc->state) { | |
121 | case SPAPR_DRC_STATE_LOGICAL_AVAILABLE: | |
122 | case SPAPR_DRC_STATE_LOGICAL_UNUSABLE: | |
123 | return RTAS_OUT_SUCCESS; /* Nothing to do */ | |
124 | case SPAPR_DRC_STATE_LOGICAL_CONFIGURED: | |
125 | break; /* see below */ | |
126 | case SPAPR_DRC_STATE_LOGICAL_UNISOLATE: | |
127 | return RTAS_OUT_PARAM_ERROR; /* not allowed */ | |
128 | default: | |
129 | g_assert_not_reached(); | |
130 | } | |
131 | ||
132 | /* | |
133 | * Fail any requests to ISOLATE the LMB DRC if this LMB doesn't | |
134 | * belong to a DIMM device that is marked for removal. | |
135 | * | |
136 | * Currently the guest userspace tool drmgr that drives the memory | |
137 | * hotplug/unplug will just try to remove a set of 'removable' LMBs | |
138 | * in response to a hot unplug request that is based on drc-count. | |
139 | * If the LMB being removed doesn't belong to a DIMM device that is | |
140 | * actually being unplugged, fail the isolation request here. | |
141 | */ | |
142 | if (spapr_drc_type(drc) == SPAPR_DR_CONNECTOR_TYPE_LMB | |
143 | && !drc->unplug_requested) { | |
144 | return RTAS_OUT_HW_ERROR; | |
145 | } | |
146 | ||
147 | drc->state = SPAPR_DRC_STATE_LOGICAL_AVAILABLE; | |
148 | ||
149 | return RTAS_OUT_SUCCESS; | |
150 | } | |
151 | ||
152 | static uint32_t drc_unisolate_logical(SpaprDrc *drc) | |
153 | { | |
154 | SpaprMachineState *spapr = NULL; | |
155 | ||
156 | switch (drc->state) { | |
157 | case SPAPR_DRC_STATE_LOGICAL_UNISOLATE: | |
158 | case SPAPR_DRC_STATE_LOGICAL_CONFIGURED: | |
159 | /* | |
160 | * Unisolating a logical DRC that was marked for unplug | |
161 | * means that the kernel is refusing the removal. | |
162 | */ | |
163 | if (drc->unplug_requested && drc->dev) { | |
164 | if (spapr_drc_type(drc) == SPAPR_DR_CONNECTOR_TYPE_LMB) { | |
165 | spapr = SPAPR_MACHINE(qdev_get_machine()); | |
166 | ||
167 | spapr_memory_unplug_rollback(spapr, drc->dev); | |
168 | } | |
169 | ||
170 | drc->unplug_requested = false; | |
171 | ||
172 | if (drc->dev->id) { | |
173 | error_report("Device hotunplug rejected by the guest " | |
174 | "for device %s", drc->dev->id); | |
175 | } | |
176 | ||
177 | qapi_event_send_device_unplug_guest_error(drc->dev->id, | |
178 | drc->dev->canonical_path); | |
179 | } | |
180 | ||
181 | return RTAS_OUT_SUCCESS; /* Nothing to do */ | |
182 | case SPAPR_DRC_STATE_LOGICAL_AVAILABLE: | |
183 | break; /* see below */ | |
184 | case SPAPR_DRC_STATE_LOGICAL_UNUSABLE: | |
185 | return RTAS_OUT_NO_SUCH_INDICATOR; /* not allowed */ | |
186 | default: | |
187 | g_assert_not_reached(); | |
188 | } | |
189 | ||
190 | /* Move to AVAILABLE state should have ensured device was present */ | |
191 | g_assert(drc->dev); | |
192 | ||
193 | drc->state = SPAPR_DRC_STATE_LOGICAL_UNISOLATE; | |
194 | drc->ccs_offset = drc->fdt_start_offset; | |
195 | drc->ccs_depth = 0; | |
196 | ||
197 | return RTAS_OUT_SUCCESS; | |
198 | } | |
199 | ||
200 | static uint32_t drc_set_usable(SpaprDrc *drc) | |
201 | { | |
202 | switch (drc->state) { | |
203 | case SPAPR_DRC_STATE_LOGICAL_AVAILABLE: | |
204 | case SPAPR_DRC_STATE_LOGICAL_UNISOLATE: | |
205 | case SPAPR_DRC_STATE_LOGICAL_CONFIGURED: | |
206 | return RTAS_OUT_SUCCESS; /* Nothing to do */ | |
207 | case SPAPR_DRC_STATE_LOGICAL_UNUSABLE: | |
208 | break; /* see below */ | |
209 | default: | |
210 | g_assert_not_reached(); | |
211 | } | |
212 | ||
213 | /* if there's no resource/device associated with the DRC, there's | |
214 | * no way for us to put it in an allocation state consistent with | |
215 | * being 'USABLE'. PAPR 2.7, 13.5.3.4 documents that this should | |
216 | * result in an RTAS return code of -3 / "no such indicator" | |
217 | */ | |
218 | if (!drc->dev) { | |
219 | return RTAS_OUT_NO_SUCH_INDICATOR; | |
220 | } | |
221 | if (drc->unplug_requested) { | |
222 | /* Don't allow the guest to move a device away from UNUSABLE | |
223 | * state when we want to unplug it */ | |
224 | return RTAS_OUT_NO_SUCH_INDICATOR; | |
225 | } | |
226 | ||
227 | drc->state = SPAPR_DRC_STATE_LOGICAL_AVAILABLE; | |
228 | ||
229 | return RTAS_OUT_SUCCESS; | |
230 | } | |
231 | ||
232 | static uint32_t drc_set_unusable(SpaprDrc *drc) | |
233 | { | |
234 | switch (drc->state) { | |
235 | case SPAPR_DRC_STATE_LOGICAL_UNUSABLE: | |
236 | return RTAS_OUT_SUCCESS; /* Nothing to do */ | |
237 | case SPAPR_DRC_STATE_LOGICAL_AVAILABLE: | |
238 | break; /* see below */ | |
239 | case SPAPR_DRC_STATE_LOGICAL_UNISOLATE: | |
240 | case SPAPR_DRC_STATE_LOGICAL_CONFIGURED: | |
241 | return RTAS_OUT_NO_SUCH_INDICATOR; /* not allowed */ | |
242 | default: | |
243 | g_assert_not_reached(); | |
244 | } | |
245 | ||
246 | drc->state = SPAPR_DRC_STATE_LOGICAL_UNUSABLE; | |
247 | if (drc->unplug_requested) { | |
248 | uint32_t drc_index = spapr_drc_index(drc); | |
249 | trace_spapr_drc_set_allocation_state_finalizing(drc_index); | |
250 | spapr_drc_release(drc); | |
251 | } | |
252 | ||
253 | return RTAS_OUT_SUCCESS; | |
254 | } | |
255 | ||
256 | static char *spapr_drc_name(SpaprDrc *drc) | |
257 | { | |
258 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
259 | ||
260 | /* human-readable name for a DRC to encode into the DT | |
261 | * description. this is mainly only used within a guest in place | |
262 | * of the unique DRC index. | |
263 | * | |
264 | * in the case of VIO/PCI devices, it corresponds to a "location | |
265 | * code" that maps a logical device/function (DRC index) to a | |
266 | * physical (or virtual in the case of VIO) location in the system | |
267 | * by chaining together the "location label" for each | |
268 | * encapsulating component. | |
269 | * | |
270 | * since this is more to do with diagnosing physical hardware | |
271 | * issues than guest compatibility, we choose location codes/DRC | |
272 | * names that adhere to the documented format, but avoid encoding | |
273 | * the entire topology information into the label/code, instead | |
274 | * just using the location codes based on the labels for the | |
275 | * endpoints (VIO/PCI adaptor connectors), which is basically just | |
276 | * "C" followed by an integer ID. | |
277 | * | |
278 | * DRC names as documented by PAPR+ v2.7, 13.5.2.4 | |
279 | * location codes as documented by PAPR+ v2.7, 12.3.1.5 | |
280 | */ | |
281 | return g_strdup_printf("%s%d", drck->drc_name_prefix, drc->id); | |
282 | } | |
283 | ||
284 | /* | |
285 | * dr-entity-sense sensor value | |
286 | * returned via get-sensor-state RTAS calls | |
287 | * as expected by state diagram in PAPR+ 2.7, 13.4 | |
288 | * based on the current allocation/indicator/power states | |
289 | * for the DR connector. | |
290 | */ | |
291 | static SpaprDREntitySense physical_entity_sense(SpaprDrc *drc) | |
292 | { | |
293 | /* this assumes all PCI devices are assigned to a 'live insertion' | |
294 | * power domain, where QEMU manages power state automatically as | |
295 | * opposed to the guest. present, non-PCI resources are unaffected | |
296 | * by power state. | |
297 | */ | |
298 | return drc->dev ? SPAPR_DR_ENTITY_SENSE_PRESENT | |
299 | : SPAPR_DR_ENTITY_SENSE_EMPTY; | |
300 | } | |
301 | ||
302 | static SpaprDREntitySense logical_entity_sense(SpaprDrc *drc) | |
303 | { | |
304 | switch (drc->state) { | |
305 | case SPAPR_DRC_STATE_LOGICAL_UNUSABLE: | |
306 | return SPAPR_DR_ENTITY_SENSE_UNUSABLE; | |
307 | case SPAPR_DRC_STATE_LOGICAL_AVAILABLE: | |
308 | case SPAPR_DRC_STATE_LOGICAL_UNISOLATE: | |
309 | case SPAPR_DRC_STATE_LOGICAL_CONFIGURED: | |
310 | g_assert(drc->dev); | |
311 | return SPAPR_DR_ENTITY_SENSE_PRESENT; | |
312 | default: | |
313 | g_assert_not_reached(); | |
314 | } | |
315 | } | |
316 | ||
317 | static void prop_get_index(Object *obj, Visitor *v, const char *name, | |
318 | void *opaque, Error **errp) | |
319 | { | |
320 | SpaprDrc *drc = SPAPR_DR_CONNECTOR(obj); | |
321 | uint32_t value = spapr_drc_index(drc); | |
322 | visit_type_uint32(v, name, &value, errp); | |
323 | } | |
324 | ||
325 | static void prop_get_fdt(Object *obj, Visitor *v, const char *name, | |
326 | void *opaque, Error **errp) | |
327 | { | |
328 | SpaprDrc *drc = SPAPR_DR_CONNECTOR(obj); | |
329 | QNull *null = NULL; | |
330 | int fdt_offset_next, fdt_offset, fdt_depth; | |
331 | void *fdt; | |
332 | ||
333 | if (!drc->fdt) { | |
334 | visit_type_null(v, NULL, &null, errp); | |
335 | qobject_unref(null); | |
336 | return; | |
337 | } | |
338 | ||
339 | fdt = drc->fdt; | |
340 | fdt_offset = drc->fdt_start_offset; | |
341 | fdt_depth = 0; | |
342 | ||
343 | do { | |
344 | const char *dt_name = NULL; | |
345 | const struct fdt_property *prop = NULL; | |
346 | int prop_len = 0, name_len = 0; | |
347 | uint32_t tag; | |
348 | bool ok; | |
349 | ||
350 | tag = fdt_next_tag(fdt, fdt_offset, &fdt_offset_next); | |
351 | switch (tag) { | |
352 | case FDT_BEGIN_NODE: | |
353 | fdt_depth++; | |
354 | dt_name = fdt_get_name(fdt, fdt_offset, &name_len); | |
355 | if (!visit_start_struct(v, dt_name, NULL, 0, errp)) { | |
356 | return; | |
357 | } | |
358 | break; | |
359 | case FDT_END_NODE: | |
360 | /* shouldn't ever see an FDT_END_NODE before FDT_BEGIN_NODE */ | |
361 | g_assert(fdt_depth > 0); | |
362 | ok = visit_check_struct(v, errp); | |
363 | visit_end_struct(v, NULL); | |
364 | if (!ok) { | |
365 | return; | |
366 | } | |
367 | fdt_depth--; | |
368 | break; | |
369 | case FDT_PROP: { | |
370 | int i; | |
371 | prop = fdt_get_property_by_offset(fdt, fdt_offset, &prop_len); | |
372 | dt_name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff)); | |
373 | if (!visit_start_list(v, dt_name, NULL, 0, errp)) { | |
374 | return; | |
375 | } | |
376 | for (i = 0; i < prop_len; i++) { | |
377 | if (!visit_type_uint8(v, NULL, (uint8_t *)&prop->data[i], | |
378 | errp)) { | |
379 | return; | |
380 | } | |
381 | } | |
382 | ok = visit_check_list(v, errp); | |
383 | visit_end_list(v, NULL); | |
384 | if (!ok) { | |
385 | return; | |
386 | } | |
387 | break; | |
388 | } | |
389 | default: | |
390 | error_report("device FDT in unexpected state: %d", tag); | |
391 | abort(); | |
392 | } | |
393 | fdt_offset = fdt_offset_next; | |
394 | } while (fdt_depth != 0); | |
395 | } | |
396 | ||
397 | void spapr_drc_attach(SpaprDrc *drc, DeviceState *d) | |
398 | { | |
399 | trace_spapr_drc_attach(spapr_drc_index(drc)); | |
400 | ||
401 | g_assert(!drc->dev); | |
402 | g_assert((drc->state == SPAPR_DRC_STATE_LOGICAL_UNUSABLE) | |
403 | || (drc->state == SPAPR_DRC_STATE_PHYSICAL_POWERON)); | |
404 | ||
405 | drc->dev = d; | |
406 | ||
407 | object_property_add_link(OBJECT(drc), "device", | |
408 | object_get_typename(OBJECT(drc->dev)), | |
409 | (Object **)(&drc->dev), | |
410 | NULL, 0); | |
411 | } | |
412 | ||
413 | void spapr_drc_unplug_request(SpaprDrc *drc) | |
414 | { | |
415 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
416 | ||
417 | trace_spapr_drc_unplug_request(spapr_drc_index(drc)); | |
418 | ||
419 | g_assert(drc->dev); | |
420 | ||
421 | drc->unplug_requested = true; | |
422 | ||
423 | if (drc->state != drck->empty_state) { | |
424 | trace_spapr_drc_awaiting_quiesce(spapr_drc_index(drc)); | |
425 | return; | |
426 | } | |
427 | ||
428 | spapr_drc_release(drc); | |
429 | } | |
430 | ||
431 | bool spapr_drc_reset(SpaprDrc *drc) | |
432 | { | |
433 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
434 | bool unplug_completed = false; | |
435 | ||
436 | trace_spapr_drc_reset(spapr_drc_index(drc)); | |
437 | ||
438 | /* immediately upon reset we can safely assume DRCs whose devices | |
439 | * are pending removal can be safely removed. | |
440 | */ | |
441 | if (drc->unplug_requested) { | |
442 | spapr_drc_release(drc); | |
443 | unplug_completed = true; | |
444 | } | |
445 | ||
446 | if (drc->dev) { | |
447 | /* A device present at reset is ready to go, same as coldplugged */ | |
448 | drc->state = drck->ready_state; | |
449 | /* | |
450 | * Ensure that we are able to send the FDT fragment again | |
451 | * via configure-connector call if the guest requests. | |
452 | */ | |
453 | drc->ccs_offset = drc->fdt_start_offset; | |
454 | drc->ccs_depth = 0; | |
455 | } else { | |
456 | drc->state = drck->empty_state; | |
457 | drc->ccs_offset = -1; | |
458 | drc->ccs_depth = -1; | |
459 | } | |
460 | ||
461 | return unplug_completed; | |
462 | } | |
463 | ||
464 | static bool spapr_drc_unplug_requested_needed(void *opaque) | |
465 | { | |
466 | return spapr_drc_unplug_requested(opaque); | |
467 | } | |
468 | ||
469 | static const VMStateDescription vmstate_spapr_drc_unplug_requested = { | |
470 | .name = "spapr_drc/unplug_requested", | |
471 | .version_id = 1, | |
472 | .minimum_version_id = 1, | |
473 | .needed = spapr_drc_unplug_requested_needed, | |
474 | .fields = (const VMStateField []) { | |
475 | VMSTATE_BOOL(unplug_requested, SpaprDrc), | |
476 | VMSTATE_END_OF_LIST() | |
477 | } | |
478 | }; | |
479 | ||
480 | static bool spapr_drc_needed(void *opaque) | |
481 | { | |
482 | SpaprDrc *drc = opaque; | |
483 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
484 | ||
485 | /* | |
486 | * If no dev is plugged in there is no need to migrate the DRC state | |
487 | * nor to reset the DRC at CAS. | |
488 | */ | |
489 | if (!drc->dev) { | |
490 | return false; | |
491 | } | |
492 | ||
493 | /* | |
494 | * We need to reset the DRC at CAS or to migrate the DRC state if it's | |
495 | * not equal to the expected long-term state, which is the same as the | |
496 | * coldplugged initial state, or if an unplug request is pending. | |
497 | */ | |
498 | return drc->state != drck->ready_state || | |
499 | spapr_drc_unplug_requested(drc); | |
500 | } | |
501 | ||
502 | static const VMStateDescription vmstate_spapr_drc = { | |
503 | .name = "spapr_drc", | |
504 | .version_id = 1, | |
505 | .minimum_version_id = 1, | |
506 | .needed = spapr_drc_needed, | |
507 | .fields = (const VMStateField []) { | |
508 | VMSTATE_UINT32(state, SpaprDrc), | |
509 | VMSTATE_END_OF_LIST() | |
510 | }, | |
511 | .subsections = (const VMStateDescription * const []) { | |
512 | &vmstate_spapr_drc_unplug_requested, | |
513 | NULL | |
514 | } | |
515 | }; | |
516 | ||
517 | static void drc_realize(DeviceState *d, Error **errp) | |
518 | { | |
519 | SpaprDrc *drc = SPAPR_DR_CONNECTOR(d); | |
520 | g_autofree gchar *link_name = g_strdup_printf("%x", spapr_drc_index(drc)); | |
521 | Object *root_container; | |
522 | const char *child_name; | |
523 | ||
524 | trace_spapr_drc_realize(spapr_drc_index(drc)); | |
525 | /* NOTE: we do this as part of realize/unrealize due to the fact | |
526 | * that the guest will communicate with the DRC via RTAS calls | |
527 | * referencing the global DRC index. By unlinking the DRC | |
528 | * from DRC_CONTAINER_PATH/<drc_index> we effectively make it | |
529 | * inaccessible by the guest, since lookups rely on this path | |
530 | * existing in the composition tree | |
531 | */ | |
532 | root_container = container_get(object_get_root(), DRC_CONTAINER_PATH); | |
533 | child_name = object_get_canonical_path_component(OBJECT(drc)); | |
534 | trace_spapr_drc_realize_child(spapr_drc_index(drc), child_name); | |
535 | object_property_add_alias(root_container, link_name, | |
536 | drc->owner, child_name); | |
537 | vmstate_register(VMSTATE_IF(drc), spapr_drc_index(drc), &vmstate_spapr_drc, | |
538 | drc); | |
539 | trace_spapr_drc_realize_complete(spapr_drc_index(drc)); | |
540 | } | |
541 | ||
542 | static void drc_unrealize(DeviceState *d) | |
543 | { | |
544 | SpaprDrc *drc = SPAPR_DR_CONNECTOR(d); | |
545 | g_autofree gchar *name = g_strdup_printf("%x", spapr_drc_index(drc)); | |
546 | Object *root_container; | |
547 | ||
548 | trace_spapr_drc_unrealize(spapr_drc_index(drc)); | |
549 | vmstate_unregister(VMSTATE_IF(drc), &vmstate_spapr_drc, drc); | |
550 | root_container = container_get(object_get_root(), DRC_CONTAINER_PATH); | |
551 | object_property_del(root_container, name); | |
552 | } | |
553 | ||
554 | SpaprDrc *spapr_dr_connector_new(Object *owner, const char *type, | |
555 | uint32_t id) | |
556 | { | |
557 | SpaprDrc *drc = SPAPR_DR_CONNECTOR(object_new(type)); | |
558 | g_autofree char *prop_name = NULL; | |
559 | ||
560 | drc->id = id; | |
561 | drc->owner = owner; | |
562 | prop_name = g_strdup_printf("dr-connector[%"PRIu32"]", | |
563 | spapr_drc_index(drc)); | |
564 | object_property_add_child(owner, prop_name, OBJECT(drc)); | |
565 | object_unref(OBJECT(drc)); | |
566 | qdev_realize(DEVICE(drc), NULL, NULL); | |
567 | ||
568 | return drc; | |
569 | } | |
570 | ||
571 | static void spapr_dr_connector_instance_init(Object *obj) | |
572 | { | |
573 | SpaprDrc *drc = SPAPR_DR_CONNECTOR(obj); | |
574 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
575 | ||
576 | object_property_add_uint32_ptr(obj, "id", &drc->id, OBJ_PROP_FLAG_READ); | |
577 | object_property_add(obj, "index", "uint32", prop_get_index, | |
578 | NULL, NULL, NULL); | |
579 | object_property_add(obj, "fdt", "struct", prop_get_fdt, | |
580 | NULL, NULL, NULL); | |
581 | drc->state = drck->empty_state; | |
582 | } | |
583 | ||
584 | static void spapr_dr_connector_class_init(ObjectClass *k, void *data) | |
585 | { | |
586 | DeviceClass *dk = DEVICE_CLASS(k); | |
587 | ||
588 | dk->realize = drc_realize; | |
589 | dk->unrealize = drc_unrealize; | |
590 | /* | |
591 | * Reason: DR connector needs to be wired to either the machine or to a | |
592 | * PHB in spapr_dr_connector_new(). | |
593 | */ | |
594 | dk->user_creatable = false; | |
595 | } | |
596 | ||
597 | static bool drc_physical_needed(void *opaque) | |
598 | { | |
599 | SpaprDrcPhysical *drcp = (SpaprDrcPhysical *)opaque; | |
600 | SpaprDrc *drc = SPAPR_DR_CONNECTOR(drcp); | |
601 | ||
602 | if ((drc->dev && (drcp->dr_indicator == SPAPR_DR_INDICATOR_ACTIVE)) | |
603 | || (!drc->dev && (drcp->dr_indicator == SPAPR_DR_INDICATOR_INACTIVE))) { | |
604 | return false; | |
605 | } | |
606 | return true; | |
607 | } | |
608 | ||
609 | static const VMStateDescription vmstate_spapr_drc_physical = { | |
610 | .name = "spapr_drc/physical", | |
611 | .version_id = 1, | |
612 | .minimum_version_id = 1, | |
613 | .needed = drc_physical_needed, | |
614 | .fields = (const VMStateField []) { | |
615 | VMSTATE_UINT32(dr_indicator, SpaprDrcPhysical), | |
616 | VMSTATE_END_OF_LIST() | |
617 | } | |
618 | }; | |
619 | ||
620 | static void drc_physical_reset(void *opaque) | |
621 | { | |
622 | SpaprDrc *drc = SPAPR_DR_CONNECTOR(opaque); | |
623 | SpaprDrcPhysical *drcp = SPAPR_DRC_PHYSICAL(drc); | |
624 | ||
625 | if (drc->dev) { | |
626 | drcp->dr_indicator = SPAPR_DR_INDICATOR_ACTIVE; | |
627 | } else { | |
628 | drcp->dr_indicator = SPAPR_DR_INDICATOR_INACTIVE; | |
629 | } | |
630 | } | |
631 | ||
632 | static void realize_physical(DeviceState *d, Error **errp) | |
633 | { | |
634 | SpaprDrcPhysical *drcp = SPAPR_DRC_PHYSICAL(d); | |
635 | Error *local_err = NULL; | |
636 | ||
637 | drc_realize(d, &local_err); | |
638 | if (local_err) { | |
639 | error_propagate(errp, local_err); | |
640 | return; | |
641 | } | |
642 | ||
643 | vmstate_register(VMSTATE_IF(drcp), | |
644 | spapr_drc_index(SPAPR_DR_CONNECTOR(drcp)), | |
645 | &vmstate_spapr_drc_physical, drcp); | |
646 | qemu_register_reset(drc_physical_reset, drcp); | |
647 | } | |
648 | ||
649 | static void unrealize_physical(DeviceState *d) | |
650 | { | |
651 | SpaprDrcPhysical *drcp = SPAPR_DRC_PHYSICAL(d); | |
652 | ||
653 | drc_unrealize(d); | |
654 | vmstate_unregister(VMSTATE_IF(drcp), &vmstate_spapr_drc_physical, drcp); | |
655 | qemu_unregister_reset(drc_physical_reset, drcp); | |
656 | } | |
657 | ||
658 | static void spapr_drc_physical_class_init(ObjectClass *k, void *data) | |
659 | { | |
660 | DeviceClass *dk = DEVICE_CLASS(k); | |
661 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
662 | ||
663 | dk->realize = realize_physical; | |
664 | dk->unrealize = unrealize_physical; | |
665 | drck->dr_entity_sense = physical_entity_sense; | |
666 | drck->isolate = drc_isolate_physical; | |
667 | drck->unisolate = drc_unisolate_physical; | |
668 | drck->ready_state = SPAPR_DRC_STATE_PHYSICAL_CONFIGURED; | |
669 | drck->empty_state = SPAPR_DRC_STATE_PHYSICAL_POWERON; | |
670 | } | |
671 | ||
672 | static void spapr_drc_logical_class_init(ObjectClass *k, void *data) | |
673 | { | |
674 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
675 | ||
676 | drck->dr_entity_sense = logical_entity_sense; | |
677 | drck->isolate = drc_isolate_logical; | |
678 | drck->unisolate = drc_unisolate_logical; | |
679 | drck->ready_state = SPAPR_DRC_STATE_LOGICAL_CONFIGURED; | |
680 | drck->empty_state = SPAPR_DRC_STATE_LOGICAL_UNUSABLE; | |
681 | } | |
682 | ||
683 | static void spapr_drc_cpu_class_init(ObjectClass *k, void *data) | |
684 | { | |
685 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
686 | ||
687 | drck->typeshift = SPAPR_DR_CONNECTOR_TYPE_SHIFT_CPU; | |
688 | drck->typename = "CPU"; | |
689 | drck->drc_name_prefix = "CPU "; | |
690 | drck->release = spapr_core_release; | |
691 | drck->dt_populate = spapr_core_dt_populate; | |
692 | } | |
693 | ||
694 | static void spapr_drc_pci_class_init(ObjectClass *k, void *data) | |
695 | { | |
696 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
697 | ||
698 | drck->typeshift = SPAPR_DR_CONNECTOR_TYPE_SHIFT_PCI; | |
699 | drck->typename = "28"; | |
700 | drck->drc_name_prefix = "C"; | |
701 | drck->release = spapr_phb_remove_pci_device_cb; | |
702 | drck->dt_populate = spapr_pci_dt_populate; | |
703 | } | |
704 | ||
705 | static void spapr_drc_lmb_class_init(ObjectClass *k, void *data) | |
706 | { | |
707 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
708 | ||
709 | drck->typeshift = SPAPR_DR_CONNECTOR_TYPE_SHIFT_LMB; | |
710 | drck->typename = "MEM"; | |
711 | drck->drc_name_prefix = "LMB "; | |
712 | drck->release = spapr_lmb_release; | |
713 | drck->dt_populate = spapr_lmb_dt_populate; | |
714 | } | |
715 | ||
716 | static void spapr_drc_phb_class_init(ObjectClass *k, void *data) | |
717 | { | |
718 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
719 | ||
720 | drck->typeshift = SPAPR_DR_CONNECTOR_TYPE_SHIFT_PHB; | |
721 | drck->typename = "PHB"; | |
722 | drck->drc_name_prefix = "PHB "; | |
723 | drck->release = spapr_phb_release; | |
724 | drck->dt_populate = spapr_phb_dt_populate; | |
725 | } | |
726 | ||
727 | static void spapr_drc_pmem_class_init(ObjectClass *k, void *data) | |
728 | { | |
729 | SpaprDrcClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
730 | ||
731 | drck->typeshift = SPAPR_DR_CONNECTOR_TYPE_SHIFT_PMEM; | |
732 | drck->typename = "PMEM"; | |
733 | drck->drc_name_prefix = "PMEM "; | |
734 | drck->release = NULL; | |
735 | drck->dt_populate = spapr_pmem_dt_populate; | |
736 | } | |
737 | ||
738 | static const TypeInfo spapr_dr_connector_info = { | |
739 | .name = TYPE_SPAPR_DR_CONNECTOR, | |
740 | .parent = TYPE_DEVICE, | |
741 | .instance_size = sizeof(SpaprDrc), | |
742 | .instance_init = spapr_dr_connector_instance_init, | |
743 | .class_size = sizeof(SpaprDrcClass), | |
744 | .class_init = spapr_dr_connector_class_init, | |
745 | .abstract = true, | |
746 | }; | |
747 | ||
748 | static const TypeInfo spapr_drc_physical_info = { | |
749 | .name = TYPE_SPAPR_DRC_PHYSICAL, | |
750 | .parent = TYPE_SPAPR_DR_CONNECTOR, | |
751 | .instance_size = sizeof(SpaprDrcPhysical), | |
752 | .class_init = spapr_drc_physical_class_init, | |
753 | .abstract = true, | |
754 | }; | |
755 | ||
756 | static const TypeInfo spapr_drc_logical_info = { | |
757 | .name = TYPE_SPAPR_DRC_LOGICAL, | |
758 | .parent = TYPE_SPAPR_DR_CONNECTOR, | |
759 | .class_init = spapr_drc_logical_class_init, | |
760 | .abstract = true, | |
761 | }; | |
762 | ||
763 | static const TypeInfo spapr_drc_cpu_info = { | |
764 | .name = TYPE_SPAPR_DRC_CPU, | |
765 | .parent = TYPE_SPAPR_DRC_LOGICAL, | |
766 | .class_init = spapr_drc_cpu_class_init, | |
767 | }; | |
768 | ||
769 | static const TypeInfo spapr_drc_pci_info = { | |
770 | .name = TYPE_SPAPR_DRC_PCI, | |
771 | .parent = TYPE_SPAPR_DRC_PHYSICAL, | |
772 | .class_init = spapr_drc_pci_class_init, | |
773 | }; | |
774 | ||
775 | static const TypeInfo spapr_drc_lmb_info = { | |
776 | .name = TYPE_SPAPR_DRC_LMB, | |
777 | .parent = TYPE_SPAPR_DRC_LOGICAL, | |
778 | .class_init = spapr_drc_lmb_class_init, | |
779 | }; | |
780 | ||
781 | static const TypeInfo spapr_drc_phb_info = { | |
782 | .name = TYPE_SPAPR_DRC_PHB, | |
783 | .parent = TYPE_SPAPR_DRC_LOGICAL, | |
784 | .instance_size = sizeof(SpaprDrc), | |
785 | .class_init = spapr_drc_phb_class_init, | |
786 | }; | |
787 | ||
788 | static const TypeInfo spapr_drc_pmem_info = { | |
789 | .name = TYPE_SPAPR_DRC_PMEM, | |
790 | .parent = TYPE_SPAPR_DRC_LOGICAL, | |
791 | .class_init = spapr_drc_pmem_class_init, | |
792 | }; | |
793 | ||
794 | /* helper functions for external users */ | |
795 | ||
796 | SpaprDrc *spapr_drc_by_index(uint32_t index) | |
797 | { | |
798 | Object *obj; | |
799 | g_autofree gchar *name = g_strdup_printf("%s/%x", DRC_CONTAINER_PATH, | |
800 | index); | |
801 | obj = object_resolve_path(name, NULL); | |
802 | ||
803 | return !obj ? NULL : SPAPR_DR_CONNECTOR(obj); | |
804 | } | |
805 | ||
806 | SpaprDrc *spapr_drc_by_id(const char *type, uint32_t id) | |
807 | { | |
808 | SpaprDrcClass *drck | |
809 | = SPAPR_DR_CONNECTOR_CLASS(object_class_by_name(type)); | |
810 | ||
811 | return spapr_drc_by_index(drck->typeshift << DRC_INDEX_TYPE_SHIFT | |
812 | | (id & DRC_INDEX_ID_MASK)); | |
813 | } | |
814 | ||
815 | /** | |
816 | * spapr_dt_drc | |
817 | * | |
818 | * @fdt: libfdt device tree | |
819 | * @path: path in the DT to generate properties | |
820 | * @owner: parent Object/DeviceState for which to generate DRC | |
821 | * descriptions for | |
822 | * @drc_type_mask: mask of SpaprDrcType values corresponding | |
823 | * to the types of DRCs to generate entries for | |
824 | * | |
825 | * generate OF properties to describe DRC topology/indices to guests | |
826 | * | |
827 | * as documented in PAPR+ v2.1, 13.5.2 | |
828 | */ | |
829 | int spapr_dt_drc(void *fdt, int offset, Object *owner, uint32_t drc_type_mask) | |
830 | { | |
831 | Object *root_container; | |
832 | ObjectProperty *prop; | |
833 | ObjectPropertyIterator iter; | |
834 | uint32_t drc_count = 0; | |
835 | g_autoptr(GArray) drc_indexes = g_array_new(false, true, | |
836 | sizeof(uint32_t)); | |
837 | g_autoptr(GArray) drc_power_domains = g_array_new(false, true, | |
838 | sizeof(uint32_t)); | |
839 | g_autoptr(GString) drc_names = g_string_set_size(g_string_new(NULL), | |
840 | sizeof(uint32_t)); | |
841 | g_autoptr(GString) drc_types = g_string_set_size(g_string_new(NULL), | |
842 | sizeof(uint32_t)); | |
843 | int ret; | |
844 | ||
845 | /* | |
846 | * This should really be only called once per node since it overwrites | |
847 | * the OF properties if they already exist. | |
848 | */ | |
849 | g_assert(!fdt_get_property(fdt, offset, "ibm,drc-indexes", NULL)); | |
850 | ||
851 | /* the first entry of each properties is a 32-bit integer encoding | |
852 | * the number of elements in the array. we won't know this until | |
853 | * we complete the iteration through all the matching DRCs, but | |
854 | * reserve the space now and set the offsets accordingly so we | |
855 | * can fill them in later. | |
856 | */ | |
857 | drc_indexes = g_array_set_size(drc_indexes, 1); | |
858 | drc_power_domains = g_array_set_size(drc_power_domains, 1); | |
859 | ||
860 | /* aliases for all DRConnector objects will be rooted in QOM | |
861 | * composition tree at DRC_CONTAINER_PATH | |
862 | */ | |
863 | root_container = container_get(object_get_root(), DRC_CONTAINER_PATH); | |
864 | ||
865 | object_property_iter_init(&iter, root_container); | |
866 | while ((prop = object_property_iter_next(&iter))) { | |
867 | Object *obj; | |
868 | SpaprDrc *drc; | |
869 | SpaprDrcClass *drck; | |
870 | g_autofree char *drc_name = NULL; | |
871 | uint32_t drc_index, drc_power_domain; | |
872 | ||
873 | if (!strstart(prop->type, "link<", NULL)) { | |
874 | continue; | |
875 | } | |
876 | ||
877 | obj = object_property_get_link(root_container, prop->name, | |
878 | &error_abort); | |
879 | drc = SPAPR_DR_CONNECTOR(obj); | |
880 | drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
881 | ||
882 | if (owner && (drc->owner != owner)) { | |
883 | continue; | |
884 | } | |
885 | ||
886 | if ((spapr_drc_type(drc) & drc_type_mask) == 0) { | |
887 | continue; | |
888 | } | |
889 | ||
890 | drc_count++; | |
891 | ||
892 | /* ibm,drc-indexes */ | |
893 | drc_index = cpu_to_be32(spapr_drc_index(drc)); | |
894 | g_array_append_val(drc_indexes, drc_index); | |
895 | ||
896 | /* ibm,drc-power-domains */ | |
897 | drc_power_domain = cpu_to_be32(-1); | |
898 | g_array_append_val(drc_power_domains, drc_power_domain); | |
899 | ||
900 | /* ibm,drc-names */ | |
901 | drc_name = spapr_drc_name(drc); | |
902 | drc_names = g_string_append(drc_names, drc_name); | |
903 | drc_names = g_string_insert_len(drc_names, -1, "\0", 1); | |
904 | ||
905 | /* ibm,drc-types */ | |
906 | drc_types = g_string_append(drc_types, drck->typename); | |
907 | drc_types = g_string_insert_len(drc_types, -1, "\0", 1); | |
908 | } | |
909 | ||
910 | /* now write the drc count into the space we reserved at the | |
911 | * beginning of the arrays previously | |
912 | */ | |
913 | *(uint32_t *)drc_indexes->data = cpu_to_be32(drc_count); | |
914 | *(uint32_t *)drc_power_domains->data = cpu_to_be32(drc_count); | |
915 | *(uint32_t *)drc_names->str = cpu_to_be32(drc_count); | |
916 | *(uint32_t *)drc_types->str = cpu_to_be32(drc_count); | |
917 | ||
918 | ret = fdt_setprop(fdt, offset, "ibm,drc-indexes", | |
919 | drc_indexes->data, | |
920 | drc_indexes->len * sizeof(uint32_t)); | |
921 | if (ret) { | |
922 | error_report("Couldn't create ibm,drc-indexes property"); | |
923 | return ret; | |
924 | } | |
925 | ||
926 | ret = fdt_setprop(fdt, offset, "ibm,drc-power-domains", | |
927 | drc_power_domains->data, | |
928 | drc_power_domains->len * sizeof(uint32_t)); | |
929 | if (ret) { | |
930 | error_report("Couldn't finalize ibm,drc-power-domains property"); | |
931 | return ret; | |
932 | } | |
933 | ||
934 | ret = fdt_setprop(fdt, offset, "ibm,drc-names", | |
935 | drc_names->str, drc_names->len); | |
936 | if (ret) { | |
937 | error_report("Couldn't finalize ibm,drc-names property"); | |
938 | return ret; | |
939 | } | |
940 | ||
941 | ret = fdt_setprop(fdt, offset, "ibm,drc-types", | |
942 | drc_types->str, drc_types->len); | |
943 | if (ret) { | |
944 | error_report("Couldn't finalize ibm,drc-types property"); | |
945 | } | |
946 | ||
947 | return ret; | |
948 | } | |
949 | ||
950 | void spapr_drc_reset_all(SpaprMachineState *spapr) | |
951 | { | |
952 | Object *drc_container; | |
953 | ObjectProperty *prop; | |
954 | ObjectPropertyIterator iter; | |
955 | ||
956 | drc_container = container_get(object_get_root(), DRC_CONTAINER_PATH); | |
957 | restart: | |
958 | object_property_iter_init(&iter, drc_container); | |
959 | while ((prop = object_property_iter_next(&iter))) { | |
960 | SpaprDrc *drc; | |
961 | ||
962 | if (!strstart(prop->type, "link<", NULL)) { | |
963 | continue; | |
964 | } | |
965 | drc = SPAPR_DR_CONNECTOR(object_property_get_link(drc_container, | |
966 | prop->name, | |
967 | &error_abort)); | |
968 | ||
969 | /* | |
970 | * This will complete any pending plug/unplug requests. | |
971 | * In case of a unplugged PHB or PCI bridge, this will | |
972 | * cause some DRCs to be destroyed and thus potentially | |
973 | * invalidate the iterator. | |
974 | */ | |
975 | if (spapr_drc_reset(drc)) { | |
976 | goto restart; | |
977 | } | |
978 | } | |
979 | } | |
980 | ||
981 | /* | |
982 | * RTAS calls | |
983 | */ | |
984 | ||
985 | static uint32_t rtas_set_isolation_state(uint32_t idx, uint32_t state) | |
986 | { | |
987 | SpaprDrc *drc = spapr_drc_by_index(idx); | |
988 | SpaprDrcClass *drck; | |
989 | ||
990 | if (!drc) { | |
991 | return RTAS_OUT_NO_SUCH_INDICATOR; | |
992 | } | |
993 | ||
994 | trace_spapr_drc_set_isolation_state(spapr_drc_index(drc), state); | |
995 | ||
996 | drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
997 | ||
998 | switch (state) { | |
999 | case SPAPR_DR_ISOLATION_STATE_ISOLATED: | |
1000 | return drck->isolate(drc); | |
1001 | ||
1002 | case SPAPR_DR_ISOLATION_STATE_UNISOLATED: | |
1003 | return drck->unisolate(drc); | |
1004 | ||
1005 | default: | |
1006 | return RTAS_OUT_PARAM_ERROR; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | static uint32_t rtas_set_allocation_state(uint32_t idx, uint32_t state) | |
1011 | { | |
1012 | SpaprDrc *drc = spapr_drc_by_index(idx); | |
1013 | ||
1014 | if (!drc || !object_dynamic_cast(OBJECT(drc), TYPE_SPAPR_DRC_LOGICAL)) { | |
1015 | return RTAS_OUT_NO_SUCH_INDICATOR; | |
1016 | } | |
1017 | ||
1018 | trace_spapr_drc_set_allocation_state(spapr_drc_index(drc), state); | |
1019 | ||
1020 | switch (state) { | |
1021 | case SPAPR_DR_ALLOCATION_STATE_USABLE: | |
1022 | return drc_set_usable(drc); | |
1023 | ||
1024 | case SPAPR_DR_ALLOCATION_STATE_UNUSABLE: | |
1025 | return drc_set_unusable(drc); | |
1026 | ||
1027 | default: | |
1028 | return RTAS_OUT_PARAM_ERROR; | |
1029 | } | |
1030 | } | |
1031 | ||
1032 | static uint32_t rtas_set_dr_indicator(uint32_t idx, uint32_t state) | |
1033 | { | |
1034 | SpaprDrc *drc = spapr_drc_by_index(idx); | |
1035 | ||
1036 | if (!drc || !object_dynamic_cast(OBJECT(drc), TYPE_SPAPR_DRC_PHYSICAL)) { | |
1037 | return RTAS_OUT_NO_SUCH_INDICATOR; | |
1038 | } | |
1039 | if ((state != SPAPR_DR_INDICATOR_INACTIVE) | |
1040 | && (state != SPAPR_DR_INDICATOR_ACTIVE) | |
1041 | && (state != SPAPR_DR_INDICATOR_IDENTIFY) | |
1042 | && (state != SPAPR_DR_INDICATOR_ACTION)) { | |
1043 | return RTAS_OUT_PARAM_ERROR; /* bad state parameter */ | |
1044 | } | |
1045 | ||
1046 | trace_spapr_drc_set_dr_indicator(idx, state); | |
1047 | SPAPR_DRC_PHYSICAL(drc)->dr_indicator = state; | |
1048 | return RTAS_OUT_SUCCESS; | |
1049 | } | |
1050 | ||
1051 | static void rtas_set_indicator(PowerPCCPU *cpu, SpaprMachineState *spapr, | |
1052 | uint32_t token, | |
1053 | uint32_t nargs, target_ulong args, | |
1054 | uint32_t nret, target_ulong rets) | |
1055 | { | |
1056 | uint32_t type, idx, state; | |
1057 | uint32_t ret = RTAS_OUT_SUCCESS; | |
1058 | ||
1059 | if (nargs != 3 || nret != 1) { | |
1060 | ret = RTAS_OUT_PARAM_ERROR; | |
1061 | goto out; | |
1062 | } | |
1063 | ||
1064 | type = rtas_ld(args, 0); | |
1065 | idx = rtas_ld(args, 1); | |
1066 | state = rtas_ld(args, 2); | |
1067 | ||
1068 | switch (type) { | |
1069 | case RTAS_SENSOR_TYPE_ISOLATION_STATE: | |
1070 | ret = rtas_set_isolation_state(idx, state); | |
1071 | break; | |
1072 | case RTAS_SENSOR_TYPE_DR: | |
1073 | ret = rtas_set_dr_indicator(idx, state); | |
1074 | break; | |
1075 | case RTAS_SENSOR_TYPE_ALLOCATION_STATE: | |
1076 | ret = rtas_set_allocation_state(idx, state); | |
1077 | break; | |
1078 | default: | |
1079 | ret = RTAS_OUT_NOT_SUPPORTED; | |
1080 | } | |
1081 | ||
1082 | out: | |
1083 | rtas_st(rets, 0, ret); | |
1084 | } | |
1085 | ||
1086 | static void rtas_get_sensor_state(PowerPCCPU *cpu, SpaprMachineState *spapr, | |
1087 | uint32_t token, uint32_t nargs, | |
1088 | target_ulong args, uint32_t nret, | |
1089 | target_ulong rets) | |
1090 | { | |
1091 | uint32_t sensor_type; | |
1092 | uint32_t sensor_index; | |
1093 | uint32_t sensor_state = 0; | |
1094 | SpaprDrc *drc; | |
1095 | SpaprDrcClass *drck; | |
1096 | uint32_t ret = RTAS_OUT_SUCCESS; | |
1097 | ||
1098 | if (nargs != 2 || nret != 2) { | |
1099 | ret = RTAS_OUT_PARAM_ERROR; | |
1100 | goto out; | |
1101 | } | |
1102 | ||
1103 | sensor_type = rtas_ld(args, 0); | |
1104 | sensor_index = rtas_ld(args, 1); | |
1105 | ||
1106 | if (sensor_type != RTAS_SENSOR_TYPE_ENTITY_SENSE) { | |
1107 | /* currently only DR-related sensors are implemented */ | |
1108 | trace_spapr_rtas_get_sensor_state_not_supported(sensor_index, | |
1109 | sensor_type); | |
1110 | ret = RTAS_OUT_NOT_SUPPORTED; | |
1111 | goto out; | |
1112 | } | |
1113 | ||
1114 | drc = spapr_drc_by_index(sensor_index); | |
1115 | if (!drc) { | |
1116 | trace_spapr_rtas_get_sensor_state_invalid(sensor_index); | |
1117 | ret = RTAS_OUT_PARAM_ERROR; | |
1118 | goto out; | |
1119 | } | |
1120 | drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
1121 | sensor_state = drck->dr_entity_sense(drc); | |
1122 | ||
1123 | out: | |
1124 | rtas_st(rets, 0, ret); | |
1125 | rtas_st(rets, 1, sensor_state); | |
1126 | } | |
1127 | ||
1128 | /* configure-connector work area offsets, int32_t units for field | |
1129 | * indexes, bytes for field offset/len values. | |
1130 | * | |
1131 | * as documented by PAPR+ v2.7, 13.5.3.5 | |
1132 | */ | |
1133 | #define CC_IDX_NODE_NAME_OFFSET 2 | |
1134 | #define CC_IDX_PROP_NAME_OFFSET 2 | |
1135 | #define CC_IDX_PROP_LEN 3 | |
1136 | #define CC_IDX_PROP_DATA_OFFSET 4 | |
1137 | #define CC_VAL_DATA_OFFSET ((CC_IDX_PROP_DATA_OFFSET + 1) * 4) | |
1138 | #define CC_WA_LEN 4096 | |
1139 | ||
1140 | static void configure_connector_st(target_ulong addr, target_ulong offset, | |
1141 | const void *buf, size_t len) | |
1142 | { | |
1143 | cpu_physical_memory_write(ppc64_phys_to_real(addr + offset), | |
1144 | buf, MIN(len, CC_WA_LEN - offset)); | |
1145 | } | |
1146 | ||
1147 | static void rtas_ibm_configure_connector(PowerPCCPU *cpu, | |
1148 | SpaprMachineState *spapr, | |
1149 | uint32_t token, uint32_t nargs, | |
1150 | target_ulong args, uint32_t nret, | |
1151 | target_ulong rets) | |
1152 | { | |
1153 | uint64_t wa_addr; | |
1154 | uint64_t wa_offset; | |
1155 | uint32_t drc_index; | |
1156 | SpaprDrc *drc; | |
1157 | SpaprDrcClass *drck; | |
1158 | SpaprDRCCResponse resp = SPAPR_DR_CC_RESPONSE_CONTINUE; | |
1159 | int rc; | |
1160 | ||
1161 | if (nargs != 2 || nret != 1) { | |
1162 | rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); | |
1163 | return; | |
1164 | } | |
1165 | ||
1166 | wa_addr = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 0); | |
1167 | ||
1168 | drc_index = rtas_ld(wa_addr, 0); | |
1169 | drc = spapr_drc_by_index(drc_index); | |
1170 | if (!drc) { | |
1171 | trace_spapr_rtas_ibm_configure_connector_invalid(drc_index); | |
1172 | rc = RTAS_OUT_PARAM_ERROR; | |
1173 | goto out; | |
1174 | } | |
1175 | ||
1176 | if ((drc->state != SPAPR_DRC_STATE_LOGICAL_UNISOLATE) | |
1177 | && (drc->state != SPAPR_DRC_STATE_PHYSICAL_UNISOLATE) | |
1178 | && (drc->state != SPAPR_DRC_STATE_LOGICAL_CONFIGURED) | |
1179 | && (drc->state != SPAPR_DRC_STATE_PHYSICAL_CONFIGURED)) { | |
1180 | /* | |
1181 | * Need to unisolate the device before configuring | |
1182 | * or it should already be in configured state to | |
1183 | * allow configure-connector be called repeatedly. | |
1184 | */ | |
1185 | rc = SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE; | |
1186 | goto out; | |
1187 | } | |
1188 | ||
1189 | drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
1190 | ||
1191 | /* | |
1192 | * This indicates that the kernel is reconfiguring a LMB due to | |
1193 | * a failed hotunplug. Rollback the DIMM unplug process. | |
1194 | */ | |
1195 | if (spapr_drc_type(drc) == SPAPR_DR_CONNECTOR_TYPE_LMB && | |
1196 | drc->unplug_requested) { | |
1197 | spapr_memory_unplug_rollback(spapr, drc->dev); | |
1198 | } | |
1199 | ||
1200 | if (!drc->fdt) { | |
1201 | void *fdt; | |
1202 | int fdt_size; | |
1203 | ||
1204 | fdt = create_device_tree(&fdt_size); | |
1205 | ||
1206 | if (drck->dt_populate(drc, spapr, fdt, &drc->fdt_start_offset, | |
1207 | NULL)) { | |
1208 | g_free(fdt); | |
1209 | rc = SPAPR_DR_CC_RESPONSE_ERROR; | |
1210 | goto out; | |
1211 | } | |
1212 | ||
1213 | drc->fdt = fdt; | |
1214 | drc->ccs_offset = drc->fdt_start_offset; | |
1215 | drc->ccs_depth = 0; | |
1216 | } | |
1217 | ||
1218 | do { | |
1219 | uint32_t tag; | |
1220 | const char *name; | |
1221 | const struct fdt_property *prop; | |
1222 | int fdt_offset_next, prop_len; | |
1223 | ||
1224 | tag = fdt_next_tag(drc->fdt, drc->ccs_offset, &fdt_offset_next); | |
1225 | ||
1226 | switch (tag) { | |
1227 | case FDT_BEGIN_NODE: | |
1228 | drc->ccs_depth++; | |
1229 | name = fdt_get_name(drc->fdt, drc->ccs_offset, NULL); | |
1230 | ||
1231 | /* provide the name of the next OF node */ | |
1232 | wa_offset = CC_VAL_DATA_OFFSET; | |
1233 | rtas_st(wa_addr, CC_IDX_NODE_NAME_OFFSET, wa_offset); | |
1234 | configure_connector_st(wa_addr, wa_offset, name, strlen(name) + 1); | |
1235 | resp = SPAPR_DR_CC_RESPONSE_NEXT_CHILD; | |
1236 | break; | |
1237 | case FDT_END_NODE: | |
1238 | drc->ccs_depth--; | |
1239 | if (drc->ccs_depth == 0) { | |
1240 | /* done sending the device tree, move to configured state */ | |
1241 | trace_spapr_drc_set_configured(drc_index); | |
1242 | drc->state = drck->ready_state; | |
1243 | /* | |
1244 | * Ensure that we are able to send the FDT fragment | |
1245 | * again via configure-connector call if the guest requests. | |
1246 | */ | |
1247 | drc->ccs_offset = drc->fdt_start_offset; | |
1248 | drc->ccs_depth = 0; | |
1249 | fdt_offset_next = drc->fdt_start_offset; | |
1250 | resp = SPAPR_DR_CC_RESPONSE_SUCCESS; | |
1251 | } else { | |
1252 | resp = SPAPR_DR_CC_RESPONSE_PREV_PARENT; | |
1253 | } | |
1254 | break; | |
1255 | case FDT_PROP: | |
1256 | prop = fdt_get_property_by_offset(drc->fdt, drc->ccs_offset, | |
1257 | &prop_len); | |
1258 | name = fdt_string(drc->fdt, fdt32_to_cpu(prop->nameoff)); | |
1259 | ||
1260 | /* provide the name of the next OF property */ | |
1261 | wa_offset = CC_VAL_DATA_OFFSET; | |
1262 | rtas_st(wa_addr, CC_IDX_PROP_NAME_OFFSET, wa_offset); | |
1263 | configure_connector_st(wa_addr, wa_offset, name, strlen(name) + 1); | |
1264 | ||
1265 | /* provide the length and value of the OF property. data gets | |
1266 | * placed immediately after NULL terminator of the OF property's | |
1267 | * name string | |
1268 | */ | |
1269 | wa_offset += strlen(name) + 1, | |
1270 | rtas_st(wa_addr, CC_IDX_PROP_LEN, prop_len); | |
1271 | rtas_st(wa_addr, CC_IDX_PROP_DATA_OFFSET, wa_offset); | |
1272 | configure_connector_st(wa_addr, wa_offset, prop->data, prop_len); | |
1273 | resp = SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY; | |
1274 | break; | |
1275 | case FDT_END: | |
1276 | resp = SPAPR_DR_CC_RESPONSE_ERROR; | |
1277 | default: | |
1278 | /* keep seeking for an actionable tag */ | |
1279 | break; | |
1280 | } | |
1281 | if (drc->ccs_offset >= 0) { | |
1282 | drc->ccs_offset = fdt_offset_next; | |
1283 | } | |
1284 | } while (resp == SPAPR_DR_CC_RESPONSE_CONTINUE); | |
1285 | ||
1286 | rc = resp; | |
1287 | out: | |
1288 | rtas_st(rets, 0, rc); | |
1289 | } | |
1290 | ||
1291 | static void spapr_drc_register_types(void) | |
1292 | { | |
1293 | type_register_static(&spapr_dr_connector_info); | |
1294 | type_register_static(&spapr_drc_physical_info); | |
1295 | type_register_static(&spapr_drc_logical_info); | |
1296 | type_register_static(&spapr_drc_cpu_info); | |
1297 | type_register_static(&spapr_drc_pci_info); | |
1298 | type_register_static(&spapr_drc_lmb_info); | |
1299 | type_register_static(&spapr_drc_phb_info); | |
1300 | type_register_static(&spapr_drc_pmem_info); | |
1301 | ||
1302 | spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator", | |
1303 | rtas_set_indicator); | |
1304 | spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state", | |
1305 | rtas_get_sensor_state); | |
1306 | spapr_rtas_register(RTAS_IBM_CONFIGURE_CONNECTOR, "ibm,configure-connector", | |
1307 | rtas_ibm_configure_connector); | |
1308 | } | |
1309 | type_init(spapr_drc_register_types) |