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Commit | Line | Data |
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bbf5c878 MR |
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 | ||
0d75590d | 13 | #include "qemu/osdep.h" |
da34e65c | 14 | #include "qapi/error.h" |
4771d756 | 15 | #include "cpu.h" |
f348b6d1 | 16 | #include "qemu/cutils.h" |
bbf5c878 MR |
17 | #include "hw/ppc/spapr_drc.h" |
18 | #include "qom/object.h" | |
19 | #include "hw/qdev.h" | |
20 | #include "qapi/visitor.h" | |
21 | #include "qemu/error-report.h" | |
0cb688d2 | 22 | #include "hw/ppc/spapr.h" /* for RTAS return codes */ |
31834723 | 23 | #include "hw/pci-host/spapr.h" /* spapr_phb_remove_pci_device_cb callback */ |
24ac7755 | 24 | #include "trace.h" |
bbf5c878 MR |
25 | |
26 | #define DRC_CONTAINER_PATH "/dr-connector" | |
27 | #define DRC_INDEX_TYPE_SHIFT 28 | |
627c2ef7 | 28 | #define DRC_INDEX_ID_MASK ((1ULL << DRC_INDEX_TYPE_SHIFT) - 1) |
bbf5c878 | 29 | |
2d335818 DG |
30 | sPAPRDRConnectorType spapr_drc_type(sPAPRDRConnector *drc) |
31 | { | |
32 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
33 | ||
34 | return 1 << drck->typeshift; | |
35 | } | |
36 | ||
0b55aa91 | 37 | uint32_t spapr_drc_index(sPAPRDRConnector *drc) |
bbf5c878 | 38 | { |
2d335818 DG |
39 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); |
40 | ||
bbf5c878 MR |
41 | /* no set format for a drc index: it only needs to be globally |
42 | * unique. this is how we encode the DRC type on bare-metal | |
43 | * however, so might as well do that here | |
44 | */ | |
2d335818 DG |
45 | return (drck->typeshift << DRC_INDEX_TYPE_SHIFT) |
46 | | (drc->id & DRC_INDEX_ID_MASK); | |
bbf5c878 MR |
47 | } |
48 | ||
0cb688d2 MR |
49 | static uint32_t set_isolation_state(sPAPRDRConnector *drc, |
50 | sPAPRDRIsolationState state) | |
bbf5c878 MR |
51 | { |
52 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
53 | ||
0b55aa91 | 54 | trace_spapr_drc_set_isolation_state(spapr_drc_index(drc), state); |
bbf5c878 | 55 | |
b8fdd530 DG |
56 | /* if the guest is configuring a device attached to this DRC, we |
57 | * should reset the configuration state at this point since it may | |
58 | * no longer be reliable (guest released device and needs to start | |
59 | * over, or unplug occurred so the FDT is no longer valid) | |
60 | */ | |
61 | if (state == SPAPR_DR_ISOLATION_STATE_ISOLATED) { | |
62 | g_free(drc->ccs); | |
63 | drc->ccs = NULL; | |
64 | } | |
65 | ||
9d1852ce | 66 | if (state == SPAPR_DR_ISOLATION_STATE_UNISOLATED) { |
b12227af | 67 | /* cannot unisolate a non-existent resource, and, or resources |
9d1852ce MR |
68 | * which are in an 'UNUSABLE' allocation state. (PAPR 2.7, 13.5.3.5) |
69 | */ | |
70 | if (!drc->dev || | |
71 | drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_UNUSABLE) { | |
72 | return RTAS_OUT_NO_SUCH_INDICATOR; | |
73 | } | |
74 | } | |
75 | ||
cf632463 BR |
76 | /* |
77 | * Fail any requests to ISOLATE the LMB DRC if this LMB doesn't | |
78 | * belong to a DIMM device that is marked for removal. | |
79 | * | |
80 | * Currently the guest userspace tool drmgr that drives the memory | |
81 | * hotplug/unplug will just try to remove a set of 'removable' LMBs | |
82 | * in response to a hot unplug request that is based on drc-count. | |
83 | * If the LMB being removed doesn't belong to a DIMM device that is | |
84 | * actually being unplugged, fail the isolation request here. | |
85 | */ | |
2d335818 | 86 | if (spapr_drc_type(drc) == SPAPR_DR_CONNECTOR_TYPE_LMB) { |
cf632463 BR |
87 | if ((state == SPAPR_DR_ISOLATION_STATE_ISOLATED) && |
88 | !drc->awaiting_release) { | |
89 | return RTAS_OUT_HW_ERROR; | |
90 | } | |
91 | } | |
92 | ||
bbf5c878 MR |
93 | drc->isolation_state = state; |
94 | ||
95 | if (drc->isolation_state == SPAPR_DR_ISOLATION_STATE_ISOLATED) { | |
96 | /* if we're awaiting release, but still in an unconfigured state, | |
97 | * it's likely the guest is still in the process of configuring | |
98 | * the device and is transitioning the devices to an ISOLATED | |
99 | * state as a part of that process. so we only complete the | |
100 | * removal when this transition happens for a device in a | |
101 | * configured state, as suggested by the state diagram from | |
102 | * PAPR+ 2.7, 13.4 | |
103 | */ | |
104 | if (drc->awaiting_release) { | |
0b55aa91 | 105 | uint32_t drc_index = spapr_drc_index(drc); |
bbf5c878 | 106 | if (drc->configured) { |
0b55aa91 | 107 | trace_spapr_drc_set_isolation_state_finalizing(drc_index); |
31834723 | 108 | drck->detach(drc, DEVICE(drc->dev), NULL); |
bbf5c878 | 109 | } else { |
0b55aa91 | 110 | trace_spapr_drc_set_isolation_state_deferring(drc_index); |
bbf5c878 MR |
111 | } |
112 | } | |
113 | drc->configured = false; | |
114 | } | |
115 | ||
0cb688d2 | 116 | return RTAS_OUT_SUCCESS; |
bbf5c878 MR |
117 | } |
118 | ||
0cb688d2 MR |
119 | static uint32_t set_indicator_state(sPAPRDRConnector *drc, |
120 | sPAPRDRIndicatorState state) | |
bbf5c878 | 121 | { |
0b55aa91 | 122 | trace_spapr_drc_set_indicator_state(spapr_drc_index(drc), state); |
bbf5c878 | 123 | drc->indicator_state = state; |
0cb688d2 | 124 | return RTAS_OUT_SUCCESS; |
bbf5c878 MR |
125 | } |
126 | ||
0cb688d2 MR |
127 | static uint32_t set_allocation_state(sPAPRDRConnector *drc, |
128 | sPAPRDRAllocationState state) | |
bbf5c878 MR |
129 | { |
130 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
131 | ||
0b55aa91 | 132 | trace_spapr_drc_set_allocation_state(spapr_drc_index(drc), state); |
bbf5c878 | 133 | |
9d1852ce MR |
134 | if (state == SPAPR_DR_ALLOCATION_STATE_USABLE) { |
135 | /* if there's no resource/device associated with the DRC, there's | |
136 | * no way for us to put it in an allocation state consistent with | |
137 | * being 'USABLE'. PAPR 2.7, 13.5.3.4 documents that this should | |
138 | * result in an RTAS return code of -3 / "no such indicator" | |
139 | */ | |
140 | if (!drc->dev) { | |
141 | return RTAS_OUT_NO_SUCH_INDICATOR; | |
142 | } | |
fe6824d1 LV |
143 | if (drc->awaiting_release && drc->awaiting_allocation) { |
144 | /* kernel is acknowledging a previous hotplug event | |
145 | * while we are already removing it. | |
146 | * it's safe to ignore awaiting_allocation here since we know the | |
147 | * situation is predicated on the guest either already having done | |
148 | * so (boot-time hotplug), or never being able to acquire in the | |
149 | * first place (hotplug followed by immediate unplug). | |
150 | */ | |
151 | drc->awaiting_allocation_skippable = true; | |
152 | return RTAS_OUT_NO_SUCH_INDICATOR; | |
153 | } | |
9d1852ce MR |
154 | } |
155 | ||
2d335818 | 156 | if (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI) { |
bbf5c878 MR |
157 | drc->allocation_state = state; |
158 | if (drc->awaiting_release && | |
159 | drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_UNUSABLE) { | |
0b55aa91 DG |
160 | uint32_t drc_index = spapr_drc_index(drc); |
161 | trace_spapr_drc_set_allocation_state_finalizing(drc_index); | |
31834723 | 162 | drck->detach(drc, DEVICE(drc->dev), NULL); |
aab99135 BR |
163 | } else if (drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_USABLE) { |
164 | drc->awaiting_allocation = false; | |
bbf5c878 MR |
165 | } |
166 | } | |
0cb688d2 | 167 | return RTAS_OUT_SUCCESS; |
bbf5c878 MR |
168 | } |
169 | ||
bbf5c878 MR |
170 | static const char *get_name(sPAPRDRConnector *drc) |
171 | { | |
172 | return drc->name; | |
173 | } | |
174 | ||
f40eb921 MR |
175 | /* has the guest been notified of device attachment? */ |
176 | static void set_signalled(sPAPRDRConnector *drc) | |
177 | { | |
178 | drc->signalled = true; | |
179 | } | |
180 | ||
bbf5c878 MR |
181 | /* |
182 | * dr-entity-sense sensor value | |
183 | * returned via get-sensor-state RTAS calls | |
184 | * as expected by state diagram in PAPR+ 2.7, 13.4 | |
185 | * based on the current allocation/indicator/power states | |
186 | * for the DR connector. | |
187 | */ | |
0cb688d2 | 188 | static uint32_t entity_sense(sPAPRDRConnector *drc, sPAPRDREntitySense *state) |
bbf5c878 | 189 | { |
bbf5c878 | 190 | if (drc->dev) { |
2d335818 | 191 | if (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI && |
bbf5c878 MR |
192 | drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_UNUSABLE) { |
193 | /* for logical DR, we return a state of UNUSABLE | |
194 | * iff the allocation state UNUSABLE. | |
195 | * Otherwise, report the state as USABLE/PRESENT, | |
196 | * as we would for PCI. | |
197 | */ | |
0cb688d2 | 198 | *state = SPAPR_DR_ENTITY_SENSE_UNUSABLE; |
bbf5c878 MR |
199 | } else { |
200 | /* this assumes all PCI devices are assigned to | |
201 | * a 'live insertion' power domain, where QEMU | |
202 | * manages power state automatically as opposed | |
203 | * to the guest. present, non-PCI resources are | |
204 | * unaffected by power state. | |
205 | */ | |
0cb688d2 | 206 | *state = SPAPR_DR_ENTITY_SENSE_PRESENT; |
bbf5c878 MR |
207 | } |
208 | } else { | |
2d335818 | 209 | if (spapr_drc_type(drc) == SPAPR_DR_CONNECTOR_TYPE_PCI) { |
bbf5c878 MR |
210 | /* PCI devices, and only PCI devices, use EMPTY |
211 | * in cases where we'd otherwise use UNUSABLE | |
212 | */ | |
0cb688d2 | 213 | *state = SPAPR_DR_ENTITY_SENSE_EMPTY; |
bbf5c878 | 214 | } else { |
0cb688d2 | 215 | *state = SPAPR_DR_ENTITY_SENSE_UNUSABLE; |
bbf5c878 MR |
216 | } |
217 | } | |
218 | ||
0b55aa91 | 219 | trace_spapr_drc_entity_sense(spapr_drc_index(drc), *state); |
0cb688d2 | 220 | return RTAS_OUT_SUCCESS; |
bbf5c878 MR |
221 | } |
222 | ||
d7bce999 EB |
223 | static void prop_get_index(Object *obj, Visitor *v, const char *name, |
224 | void *opaque, Error **errp) | |
bbf5c878 MR |
225 | { |
226 | sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj); | |
0b55aa91 | 227 | uint32_t value = spapr_drc_index(drc); |
51e72bc1 | 228 | visit_type_uint32(v, name, &value, errp); |
bbf5c878 MR |
229 | } |
230 | ||
bbf5c878 MR |
231 | static char *prop_get_name(Object *obj, Error **errp) |
232 | { | |
233 | sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj); | |
234 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
235 | return g_strdup(drck->get_name(drc)); | |
236 | } | |
237 | ||
d7bce999 EB |
238 | static void prop_get_fdt(Object *obj, Visitor *v, const char *name, |
239 | void *opaque, Error **errp) | |
bbf5c878 MR |
240 | { |
241 | sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj); | |
c75304a1 | 242 | Error *err = NULL; |
bbf5c878 MR |
243 | int fdt_offset_next, fdt_offset, fdt_depth; |
244 | void *fdt; | |
245 | ||
246 | if (!drc->fdt) { | |
a543a554 | 247 | visit_type_null(v, NULL, errp); |
bbf5c878 MR |
248 | return; |
249 | } | |
250 | ||
251 | fdt = drc->fdt; | |
252 | fdt_offset = drc->fdt_start_offset; | |
253 | fdt_depth = 0; | |
254 | ||
255 | do { | |
256 | const char *name = NULL; | |
257 | const struct fdt_property *prop = NULL; | |
258 | int prop_len = 0, name_len = 0; | |
259 | uint32_t tag; | |
260 | ||
261 | tag = fdt_next_tag(fdt, fdt_offset, &fdt_offset_next); | |
262 | switch (tag) { | |
263 | case FDT_BEGIN_NODE: | |
264 | fdt_depth++; | |
265 | name = fdt_get_name(fdt, fdt_offset, &name_len); | |
337283df | 266 | visit_start_struct(v, name, NULL, 0, &err); |
c75304a1 MA |
267 | if (err) { |
268 | error_propagate(errp, err); | |
269 | return; | |
270 | } | |
bbf5c878 MR |
271 | break; |
272 | case FDT_END_NODE: | |
273 | /* shouldn't ever see an FDT_END_NODE before FDT_BEGIN_NODE */ | |
274 | g_assert(fdt_depth > 0); | |
15c2f669 | 275 | visit_check_struct(v, &err); |
1158bb2a | 276 | visit_end_struct(v, NULL); |
c75304a1 MA |
277 | if (err) { |
278 | error_propagate(errp, err); | |
279 | return; | |
280 | } | |
bbf5c878 MR |
281 | fdt_depth--; |
282 | break; | |
283 | case FDT_PROP: { | |
284 | int i; | |
285 | prop = fdt_get_property_by_offset(fdt, fdt_offset, &prop_len); | |
286 | name = fdt_string(fdt, fdt32_to_cpu(prop->nameoff)); | |
d9f62dde | 287 | visit_start_list(v, name, NULL, 0, &err); |
c75304a1 MA |
288 | if (err) { |
289 | error_propagate(errp, err); | |
290 | return; | |
291 | } | |
bbf5c878 | 292 | for (i = 0; i < prop_len; i++) { |
51e72bc1 | 293 | visit_type_uint8(v, NULL, (uint8_t *)&prop->data[i], &err); |
c75304a1 MA |
294 | if (err) { |
295 | error_propagate(errp, err); | |
296 | return; | |
297 | } | |
298 | } | |
a4a1c70d | 299 | visit_check_list(v, &err); |
1158bb2a | 300 | visit_end_list(v, NULL); |
a4a1c70d MA |
301 | if (err) { |
302 | error_propagate(errp, err); | |
303 | return; | |
304 | } | |
bbf5c878 MR |
305 | break; |
306 | } | |
307 | default: | |
308 | error_setg(&error_abort, "device FDT in unexpected state: %d", tag); | |
309 | } | |
310 | fdt_offset = fdt_offset_next; | |
311 | } while (fdt_depth != 0); | |
312 | } | |
313 | ||
314 | static void attach(sPAPRDRConnector *drc, DeviceState *d, void *fdt, | |
315 | int fdt_start_offset, bool coldplug, Error **errp) | |
316 | { | |
0b55aa91 | 317 | trace_spapr_drc_attach(spapr_drc_index(drc)); |
bbf5c878 MR |
318 | |
319 | if (drc->isolation_state != SPAPR_DR_ISOLATION_STATE_ISOLATED) { | |
320 | error_setg(errp, "an attached device is still awaiting release"); | |
321 | return; | |
322 | } | |
2d335818 | 323 | if (spapr_drc_type(drc) == SPAPR_DR_CONNECTOR_TYPE_PCI) { |
bbf5c878 MR |
324 | g_assert(drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_USABLE); |
325 | } | |
326 | g_assert(fdt || coldplug); | |
327 | ||
328 | /* NOTE: setting initial isolation state to UNISOLATED means we can't | |
329 | * detach unless guest has a userspace/kernel that moves this state | |
330 | * back to ISOLATED in response to an unplug event, or this is done | |
331 | * manually by the admin prior. if we force things while the guest | |
332 | * may be accessing the device, we can easily crash the guest, so we | |
333 | * we defer completion of removal in such cases to the reset() hook. | |
334 | */ | |
2d335818 | 335 | if (spapr_drc_type(drc) == SPAPR_DR_CONNECTOR_TYPE_PCI) { |
bbf5c878 MR |
336 | drc->isolation_state = SPAPR_DR_ISOLATION_STATE_UNISOLATED; |
337 | } | |
338 | drc->indicator_state = SPAPR_DR_INDICATOR_STATE_ACTIVE; | |
339 | ||
340 | drc->dev = d; | |
341 | drc->fdt = fdt; | |
342 | drc->fdt_start_offset = fdt_start_offset; | |
785652dc | 343 | drc->configured = coldplug; |
df18b2db MR |
344 | /* 'logical' DR resources such as memory/cpus are in some cases treated |
345 | * as a pool of resources from which the guest is free to choose from | |
346 | * based on only a count. for resources that can be assigned in this | |
347 | * fashion, we must assume the resource is signalled immediately | |
348 | * since a single hotplug request might make an arbitrary number of | |
349 | * such attached resources available to the guest, as opposed to | |
350 | * 'physical' DR resources such as PCI where each device/resource is | |
351 | * signalled individually. | |
352 | */ | |
2d335818 | 353 | drc->signalled = (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI) |
df18b2db | 354 | ? true : coldplug; |
bbf5c878 | 355 | |
2d335818 | 356 | if (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI) { |
aab99135 BR |
357 | drc->awaiting_allocation = true; |
358 | } | |
359 | ||
bbf5c878 MR |
360 | object_property_add_link(OBJECT(drc), "device", |
361 | object_get_typename(OBJECT(drc->dev)), | |
362 | (Object **)(&drc->dev), | |
363 | NULL, 0, NULL); | |
364 | } | |
365 | ||
31834723 | 366 | static void detach(sPAPRDRConnector *drc, DeviceState *d, Error **errp) |
bbf5c878 | 367 | { |
0b55aa91 | 368 | trace_spapr_drc_detach(spapr_drc_index(drc)); |
bbf5c878 | 369 | |
f40eb921 MR |
370 | /* if we've signalled device presence to the guest, or if the guest |
371 | * has gone ahead and configured the device (via manually-executed | |
372 | * device add via drmgr in guest, namely), we need to wait | |
373 | * for the guest to quiesce the device before completing detach. | |
374 | * Otherwise, we can assume the guest hasn't seen it and complete the | |
375 | * detach immediately. Note that there is a small race window | |
376 | * just before, or during, configuration, which is this context | |
377 | * refers mainly to fetching the device tree via RTAS. | |
378 | * During this window the device access will be arbitrated by | |
379 | * associated DRC, which will simply fail the RTAS calls as invalid. | |
380 | * This is recoverable within guest and current implementations of | |
381 | * drmgr should be able to cope. | |
382 | */ | |
383 | if (!drc->signalled && !drc->configured) { | |
384 | /* if the guest hasn't seen the device we can't rely on it to | |
385 | * set it back to an isolated state via RTAS, so do it here manually | |
386 | */ | |
387 | drc->isolation_state = SPAPR_DR_ISOLATION_STATE_ISOLATED; | |
388 | } | |
389 | ||
bbf5c878 | 390 | if (drc->isolation_state != SPAPR_DR_ISOLATION_STATE_ISOLATED) { |
0b55aa91 | 391 | trace_spapr_drc_awaiting_isolated(spapr_drc_index(drc)); |
bbf5c878 MR |
392 | drc->awaiting_release = true; |
393 | return; | |
394 | } | |
395 | ||
2d335818 | 396 | if (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI && |
bbf5c878 | 397 | drc->allocation_state != SPAPR_DR_ALLOCATION_STATE_UNUSABLE) { |
0b55aa91 | 398 | trace_spapr_drc_awaiting_unusable(spapr_drc_index(drc)); |
bbf5c878 MR |
399 | drc->awaiting_release = true; |
400 | return; | |
401 | } | |
402 | ||
aab99135 | 403 | if (drc->awaiting_allocation) { |
fe6824d1 LV |
404 | if (!drc->awaiting_allocation_skippable) { |
405 | drc->awaiting_release = true; | |
0b55aa91 | 406 | trace_spapr_drc_awaiting_allocation(spapr_drc_index(drc)); |
fe6824d1 LV |
407 | return; |
408 | } | |
aab99135 BR |
409 | } |
410 | ||
bbf5c878 MR |
411 | drc->indicator_state = SPAPR_DR_INDICATOR_STATE_INACTIVE; |
412 | ||
2d335818 DG |
413 | /* Calling release callbacks based on spapr_drc_type(drc). */ |
414 | switch (spapr_drc_type(drc)) { | |
31834723 DHB |
415 | case SPAPR_DR_CONNECTOR_TYPE_CPU: |
416 | spapr_core_release(drc->dev); | |
417 | break; | |
418 | case SPAPR_DR_CONNECTOR_TYPE_PCI: | |
419 | spapr_phb_remove_pci_device_cb(drc->dev); | |
420 | break; | |
421 | case SPAPR_DR_CONNECTOR_TYPE_LMB: | |
422 | spapr_lmb_release(drc->dev); | |
423 | break; | |
424 | case SPAPR_DR_CONNECTOR_TYPE_PHB: | |
425 | case SPAPR_DR_CONNECTOR_TYPE_VIO: | |
426 | default: | |
427 | g_assert(false); | |
bbf5c878 MR |
428 | } |
429 | ||
430 | drc->awaiting_release = false; | |
fe6824d1 | 431 | drc->awaiting_allocation_skippable = false; |
bbf5c878 MR |
432 | g_free(drc->fdt); |
433 | drc->fdt = NULL; | |
434 | drc->fdt_start_offset = 0; | |
435 | object_property_del(OBJECT(drc), "device", NULL); | |
436 | drc->dev = NULL; | |
bbf5c878 MR |
437 | } |
438 | ||
439 | static bool release_pending(sPAPRDRConnector *drc) | |
440 | { | |
441 | return drc->awaiting_release; | |
442 | } | |
443 | ||
444 | static void reset(DeviceState *d) | |
445 | { | |
446 | sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(d); | |
447 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
f40eb921 | 448 | sPAPRDREntitySense state; |
bbf5c878 | 449 | |
0b55aa91 | 450 | trace_spapr_drc_reset(spapr_drc_index(drc)); |
b8fdd530 DG |
451 | |
452 | g_free(drc->ccs); | |
453 | drc->ccs = NULL; | |
454 | ||
bbf5c878 MR |
455 | /* immediately upon reset we can safely assume DRCs whose devices |
456 | * are pending removal can be safely removed, and that they will | |
457 | * subsequently be left in an ISOLATED state. move the DRC to this | |
458 | * state in these cases (which will in turn complete any pending | |
459 | * device removals) | |
460 | */ | |
461 | if (drc->awaiting_release) { | |
462 | drck->set_isolation_state(drc, SPAPR_DR_ISOLATION_STATE_ISOLATED); | |
463 | /* generally this should also finalize the removal, but if the device | |
464 | * hasn't yet been configured we normally defer removal under the | |
465 | * assumption that this transition is taking place as part of device | |
466 | * configuration. so check if we're still waiting after this, and | |
467 | * force removal if we are | |
468 | */ | |
469 | if (drc->awaiting_release) { | |
31834723 | 470 | drck->detach(drc, DEVICE(drc->dev), NULL); |
bbf5c878 MR |
471 | } |
472 | ||
473 | /* non-PCI devices may be awaiting a transition to UNUSABLE */ | |
2d335818 | 474 | if (spapr_drc_type(drc) != SPAPR_DR_CONNECTOR_TYPE_PCI && |
bbf5c878 MR |
475 | drc->awaiting_release) { |
476 | drck->set_allocation_state(drc, SPAPR_DR_ALLOCATION_STATE_UNUSABLE); | |
477 | } | |
478 | } | |
f40eb921 MR |
479 | |
480 | drck->entity_sense(drc, &state); | |
481 | if (state == SPAPR_DR_ENTITY_SENSE_PRESENT) { | |
482 | drck->set_signalled(drc); | |
483 | } | |
bbf5c878 MR |
484 | } |
485 | ||
a50919dd DHB |
486 | static bool spapr_drc_needed(void *opaque) |
487 | { | |
488 | sPAPRDRConnector *drc = (sPAPRDRConnector *)opaque; | |
489 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
490 | bool rc = false; | |
491 | sPAPRDREntitySense value; | |
492 | drck->entity_sense(drc, &value); | |
493 | ||
494 | /* If no dev is plugged in there is no need to migrate the DRC state */ | |
495 | if (value != SPAPR_DR_ENTITY_SENSE_PRESENT) { | |
496 | return false; | |
497 | } | |
498 | ||
499 | /* | |
500 | * If there is dev plugged in, we need to migrate the DRC state when | |
501 | * it is different from cold-plugged state | |
502 | */ | |
2d335818 | 503 | switch (spapr_drc_type(drc)) { |
a50919dd | 504 | case SPAPR_DR_CONNECTOR_TYPE_PCI: |
a50919dd DHB |
505 | case SPAPR_DR_CONNECTOR_TYPE_CPU: |
506 | case SPAPR_DR_CONNECTOR_TYPE_LMB: | |
a32e900b GK |
507 | rc = !((drc->isolation_state == SPAPR_DR_ISOLATION_STATE_UNISOLATED) && |
508 | (drc->allocation_state == SPAPR_DR_ALLOCATION_STATE_USABLE) && | |
a50919dd DHB |
509 | drc->configured && drc->signalled && !drc->awaiting_release); |
510 | break; | |
511 | case SPAPR_DR_CONNECTOR_TYPE_PHB: | |
512 | case SPAPR_DR_CONNECTOR_TYPE_VIO: | |
513 | default: | |
a32e900b | 514 | g_assert_not_reached(); |
a50919dd DHB |
515 | } |
516 | return rc; | |
517 | } | |
518 | ||
519 | static const VMStateDescription vmstate_spapr_drc = { | |
520 | .name = "spapr_drc", | |
521 | .version_id = 1, | |
522 | .minimum_version_id = 1, | |
523 | .needed = spapr_drc_needed, | |
524 | .fields = (VMStateField []) { | |
525 | VMSTATE_UINT32(isolation_state, sPAPRDRConnector), | |
526 | VMSTATE_UINT32(allocation_state, sPAPRDRConnector), | |
527 | VMSTATE_UINT32(indicator_state, sPAPRDRConnector), | |
528 | VMSTATE_BOOL(configured, sPAPRDRConnector), | |
529 | VMSTATE_BOOL(awaiting_release, sPAPRDRConnector), | |
530 | VMSTATE_BOOL(awaiting_allocation, sPAPRDRConnector), | |
531 | VMSTATE_BOOL(signalled, sPAPRDRConnector), | |
532 | VMSTATE_END_OF_LIST() | |
533 | } | |
534 | }; | |
535 | ||
bbf5c878 MR |
536 | static void realize(DeviceState *d, Error **errp) |
537 | { | |
538 | sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(d); | |
bbf5c878 MR |
539 | Object *root_container; |
540 | char link_name[256]; | |
541 | gchar *child_name; | |
542 | Error *err = NULL; | |
543 | ||
0b55aa91 | 544 | trace_spapr_drc_realize(spapr_drc_index(drc)); |
bbf5c878 MR |
545 | /* NOTE: we do this as part of realize/unrealize due to the fact |
546 | * that the guest will communicate with the DRC via RTAS calls | |
547 | * referencing the global DRC index. By unlinking the DRC | |
548 | * from DRC_CONTAINER_PATH/<drc_index> we effectively make it | |
549 | * inaccessible by the guest, since lookups rely on this path | |
550 | * existing in the composition tree | |
551 | */ | |
552 | root_container = container_get(object_get_root(), DRC_CONTAINER_PATH); | |
0b55aa91 | 553 | snprintf(link_name, sizeof(link_name), "%x", spapr_drc_index(drc)); |
bbf5c878 | 554 | child_name = object_get_canonical_path_component(OBJECT(drc)); |
0b55aa91 | 555 | trace_spapr_drc_realize_child(spapr_drc_index(drc), child_name); |
bbf5c878 MR |
556 | object_property_add_alias(root_container, link_name, |
557 | drc->owner, child_name, &err); | |
558 | if (err) { | |
4fffeb5e | 559 | error_report_err(err); |
bbf5c878 MR |
560 | object_unref(OBJECT(drc)); |
561 | } | |
586d2142 | 562 | g_free(child_name); |
0b55aa91 | 563 | vmstate_register(DEVICE(drc), spapr_drc_index(drc), &vmstate_spapr_drc, |
a50919dd | 564 | drc); |
0b55aa91 | 565 | trace_spapr_drc_realize_complete(spapr_drc_index(drc)); |
bbf5c878 MR |
566 | } |
567 | ||
568 | static void unrealize(DeviceState *d, Error **errp) | |
569 | { | |
570 | sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(d); | |
bbf5c878 MR |
571 | Object *root_container; |
572 | char name[256]; | |
573 | Error *err = NULL; | |
574 | ||
0b55aa91 | 575 | trace_spapr_drc_unrealize(spapr_drc_index(drc)); |
bbf5c878 | 576 | root_container = container_get(object_get_root(), DRC_CONTAINER_PATH); |
0b55aa91 | 577 | snprintf(name, sizeof(name), "%x", spapr_drc_index(drc)); |
bbf5c878 MR |
578 | object_property_del(root_container, name, &err); |
579 | if (err) { | |
4fffeb5e | 580 | error_report_err(err); |
bbf5c878 MR |
581 | object_unref(OBJECT(drc)); |
582 | } | |
583 | } | |
584 | ||
2d335818 | 585 | sPAPRDRConnector *spapr_dr_connector_new(Object *owner, const char *type, |
bbf5c878 MR |
586 | uint32_t id) |
587 | { | |
2d335818 | 588 | sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(object_new(type)); |
94649d42 | 589 | char *prop_name; |
bbf5c878 | 590 | |
bbf5c878 MR |
591 | drc->id = id; |
592 | drc->owner = owner; | |
0b55aa91 DG |
593 | prop_name = g_strdup_printf("dr-connector[%"PRIu32"]", |
594 | spapr_drc_index(drc)); | |
94649d42 | 595 | object_property_add_child(owner, prop_name, OBJECT(drc), NULL); |
bbf5c878 | 596 | object_property_set_bool(OBJECT(drc), true, "realized", NULL); |
94649d42 | 597 | g_free(prop_name); |
bbf5c878 MR |
598 | |
599 | /* human-readable name for a DRC to encode into the DT | |
600 | * description. this is mainly only used within a guest in place | |
601 | * of the unique DRC index. | |
602 | * | |
603 | * in the case of VIO/PCI devices, it corresponds to a | |
604 | * "location code" that maps a logical device/function (DRC index) | |
605 | * to a physical (or virtual in the case of VIO) location in the | |
606 | * system by chaining together the "location label" for each | |
607 | * encapsulating component. | |
608 | * | |
609 | * since this is more to do with diagnosing physical hardware | |
610 | * issues than guest compatibility, we choose location codes/DRC | |
611 | * names that adhere to the documented format, but avoid encoding | |
612 | * the entire topology information into the label/code, instead | |
613 | * just using the location codes based on the labels for the | |
614 | * endpoints (VIO/PCI adaptor connectors), which is basically | |
615 | * just "C" followed by an integer ID. | |
616 | * | |
617 | * DRC names as documented by PAPR+ v2.7, 13.5.2.4 | |
618 | * location codes as documented by PAPR+ v2.7, 12.3.1.5 | |
619 | */ | |
2d335818 | 620 | switch (spapr_drc_type(drc)) { |
bbf5c878 MR |
621 | case SPAPR_DR_CONNECTOR_TYPE_CPU: |
622 | drc->name = g_strdup_printf("CPU %d", id); | |
623 | break; | |
624 | case SPAPR_DR_CONNECTOR_TYPE_PHB: | |
625 | drc->name = g_strdup_printf("PHB %d", id); | |
626 | break; | |
627 | case SPAPR_DR_CONNECTOR_TYPE_VIO: | |
628 | case SPAPR_DR_CONNECTOR_TYPE_PCI: | |
629 | drc->name = g_strdup_printf("C%d", id); | |
630 | break; | |
631 | case SPAPR_DR_CONNECTOR_TYPE_LMB: | |
632 | drc->name = g_strdup_printf("LMB %d", id); | |
633 | break; | |
634 | default: | |
635 | g_assert(false); | |
636 | } | |
637 | ||
638 | /* PCI slot always start in a USABLE state, and stay there */ | |
2d335818 | 639 | if (spapr_drc_type(drc) == SPAPR_DR_CONNECTOR_TYPE_PCI) { |
bbf5c878 MR |
640 | drc->allocation_state = SPAPR_DR_ALLOCATION_STATE_USABLE; |
641 | } | |
642 | ||
643 | return drc; | |
644 | } | |
645 | ||
646 | static void spapr_dr_connector_instance_init(Object *obj) | |
647 | { | |
648 | sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(obj); | |
649 | ||
bbf5c878 MR |
650 | object_property_add_uint32_ptr(obj, "id", &drc->id, NULL); |
651 | object_property_add(obj, "index", "uint32", prop_get_index, | |
652 | NULL, NULL, NULL, NULL); | |
bbf5c878 | 653 | object_property_add_str(obj, "name", prop_get_name, NULL, NULL); |
bbf5c878 MR |
654 | object_property_add(obj, "fdt", "struct", prop_get_fdt, |
655 | NULL, NULL, NULL, NULL); | |
656 | } | |
657 | ||
658 | static void spapr_dr_connector_class_init(ObjectClass *k, void *data) | |
659 | { | |
660 | DeviceClass *dk = DEVICE_CLASS(k); | |
661 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
662 | ||
663 | dk->reset = reset; | |
664 | dk->realize = realize; | |
665 | dk->unrealize = unrealize; | |
666 | drck->set_isolation_state = set_isolation_state; | |
667 | drck->set_indicator_state = set_indicator_state; | |
668 | drck->set_allocation_state = set_allocation_state; | |
bbf5c878 | 669 | drck->get_name = get_name; |
bbf5c878 MR |
670 | drck->entity_sense = entity_sense; |
671 | drck->attach = attach; | |
672 | drck->detach = detach; | |
673 | drck->release_pending = release_pending; | |
f40eb921 | 674 | drck->set_signalled = set_signalled; |
c401ae8c MA |
675 | /* |
676 | * Reason: it crashes FIXME find and document the real reason | |
677 | */ | |
e90f2a8c | 678 | dk->user_creatable = false; |
bbf5c878 MR |
679 | } |
680 | ||
2d335818 DG |
681 | static void spapr_drc_cpu_class_init(ObjectClass *k, void *data) |
682 | { | |
683 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
684 | ||
685 | drck->typeshift = SPAPR_DR_CONNECTOR_TYPE_SHIFT_CPU; | |
1693ea16 | 686 | drck->typename = "CPU"; |
2d335818 DG |
687 | } |
688 | ||
689 | static void spapr_drc_pci_class_init(ObjectClass *k, void *data) | |
690 | { | |
691 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
692 | ||
693 | drck->typeshift = SPAPR_DR_CONNECTOR_TYPE_SHIFT_PCI; | |
1693ea16 | 694 | drck->typename = "28"; |
2d335818 DG |
695 | } |
696 | ||
697 | static void spapr_drc_lmb_class_init(ObjectClass *k, void *data) | |
698 | { | |
699 | sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); | |
700 | ||
701 | drck->typeshift = SPAPR_DR_CONNECTOR_TYPE_SHIFT_LMB; | |
1693ea16 | 702 | drck->typename = "MEM"; |
2d335818 DG |
703 | } |
704 | ||
bbf5c878 MR |
705 | static const TypeInfo spapr_dr_connector_info = { |
706 | .name = TYPE_SPAPR_DR_CONNECTOR, | |
707 | .parent = TYPE_DEVICE, | |
708 | .instance_size = sizeof(sPAPRDRConnector), | |
709 | .instance_init = spapr_dr_connector_instance_init, | |
710 | .class_size = sizeof(sPAPRDRConnectorClass), | |
711 | .class_init = spapr_dr_connector_class_init, | |
2d335818 DG |
712 | .abstract = true, |
713 | }; | |
714 | ||
715 | static const TypeInfo spapr_drc_physical_info = { | |
716 | .name = TYPE_SPAPR_DRC_PHYSICAL, | |
717 | .parent = TYPE_SPAPR_DR_CONNECTOR, | |
718 | .instance_size = sizeof(sPAPRDRConnector), | |
719 | .abstract = true, | |
720 | }; | |
721 | ||
722 | static const TypeInfo spapr_drc_logical_info = { | |
723 | .name = TYPE_SPAPR_DRC_LOGICAL, | |
724 | .parent = TYPE_SPAPR_DR_CONNECTOR, | |
725 | .instance_size = sizeof(sPAPRDRConnector), | |
726 | .abstract = true, | |
727 | }; | |
728 | ||
729 | static const TypeInfo spapr_drc_cpu_info = { | |
730 | .name = TYPE_SPAPR_DRC_CPU, | |
731 | .parent = TYPE_SPAPR_DRC_LOGICAL, | |
732 | .instance_size = sizeof(sPAPRDRConnector), | |
733 | .class_init = spapr_drc_cpu_class_init, | |
734 | }; | |
735 | ||
736 | static const TypeInfo spapr_drc_pci_info = { | |
737 | .name = TYPE_SPAPR_DRC_PCI, | |
738 | .parent = TYPE_SPAPR_DRC_PHYSICAL, | |
739 | .instance_size = sizeof(sPAPRDRConnector), | |
740 | .class_init = spapr_drc_pci_class_init, | |
741 | }; | |
742 | ||
743 | static const TypeInfo spapr_drc_lmb_info = { | |
744 | .name = TYPE_SPAPR_DRC_LMB, | |
745 | .parent = TYPE_SPAPR_DRC_LOGICAL, | |
746 | .instance_size = sizeof(sPAPRDRConnector), | |
747 | .class_init = spapr_drc_lmb_class_init, | |
bbf5c878 MR |
748 | }; |
749 | ||
bbf5c878 MR |
750 | /* helper functions for external users */ |
751 | ||
fbf55397 | 752 | sPAPRDRConnector *spapr_drc_by_index(uint32_t index) |
bbf5c878 MR |
753 | { |
754 | Object *obj; | |
755 | char name[256]; | |
756 | ||
757 | snprintf(name, sizeof(name), "%s/%x", DRC_CONTAINER_PATH, index); | |
758 | obj = object_resolve_path(name, NULL); | |
759 | ||
760 | return !obj ? NULL : SPAPR_DR_CONNECTOR(obj); | |
761 | } | |
762 | ||
fbf55397 | 763 | sPAPRDRConnector *spapr_drc_by_id(const char *type, uint32_t id) |
bbf5c878 | 764 | { |
fbf55397 DG |
765 | sPAPRDRConnectorClass *drck |
766 | = SPAPR_DR_CONNECTOR_CLASS(object_class_by_name(type)); | |
767 | ||
768 | return spapr_drc_by_index(drck->typeshift << DRC_INDEX_TYPE_SHIFT | |
769 | | (id & DRC_INDEX_ID_MASK)); | |
bbf5c878 | 770 | } |
e4b798bb | 771 | |
e4b798bb MR |
772 | /** |
773 | * spapr_drc_populate_dt | |
774 | * | |
775 | * @fdt: libfdt device tree | |
776 | * @path: path in the DT to generate properties | |
777 | * @owner: parent Object/DeviceState for which to generate DRC | |
778 | * descriptions for | |
779 | * @drc_type_mask: mask of sPAPRDRConnectorType values corresponding | |
780 | * to the types of DRCs to generate entries for | |
781 | * | |
782 | * generate OF properties to describe DRC topology/indices to guests | |
783 | * | |
784 | * as documented in PAPR+ v2.1, 13.5.2 | |
785 | */ | |
786 | int spapr_drc_populate_dt(void *fdt, int fdt_offset, Object *owner, | |
787 | uint32_t drc_type_mask) | |
788 | { | |
789 | Object *root_container; | |
790 | ObjectProperty *prop; | |
7746abd8 | 791 | ObjectPropertyIterator iter; |
e4b798bb MR |
792 | uint32_t drc_count = 0; |
793 | GArray *drc_indexes, *drc_power_domains; | |
794 | GString *drc_names, *drc_types; | |
795 | int ret; | |
796 | ||
797 | /* the first entry of each properties is a 32-bit integer encoding | |
798 | * the number of elements in the array. we won't know this until | |
799 | * we complete the iteration through all the matching DRCs, but | |
800 | * reserve the space now and set the offsets accordingly so we | |
801 | * can fill them in later. | |
802 | */ | |
803 | drc_indexes = g_array_new(false, true, sizeof(uint32_t)); | |
804 | drc_indexes = g_array_set_size(drc_indexes, 1); | |
805 | drc_power_domains = g_array_new(false, true, sizeof(uint32_t)); | |
806 | drc_power_domains = g_array_set_size(drc_power_domains, 1); | |
807 | drc_names = g_string_set_size(g_string_new(NULL), sizeof(uint32_t)); | |
808 | drc_types = g_string_set_size(g_string_new(NULL), sizeof(uint32_t)); | |
809 | ||
810 | /* aliases for all DRConnector objects will be rooted in QOM | |
811 | * composition tree at DRC_CONTAINER_PATH | |
812 | */ | |
813 | root_container = container_get(object_get_root(), DRC_CONTAINER_PATH); | |
814 | ||
7746abd8 DB |
815 | object_property_iter_init(&iter, root_container); |
816 | while ((prop = object_property_iter_next(&iter))) { | |
e4b798bb MR |
817 | Object *obj; |
818 | sPAPRDRConnector *drc; | |
819 | sPAPRDRConnectorClass *drck; | |
820 | uint32_t drc_index, drc_power_domain; | |
821 | ||
822 | if (!strstart(prop->type, "link<", NULL)) { | |
823 | continue; | |
824 | } | |
825 | ||
826 | obj = object_property_get_link(root_container, prop->name, NULL); | |
827 | drc = SPAPR_DR_CONNECTOR(obj); | |
828 | drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
829 | ||
830 | if (owner && (drc->owner != owner)) { | |
831 | continue; | |
832 | } | |
833 | ||
2d335818 | 834 | if ((spapr_drc_type(drc) & drc_type_mask) == 0) { |
e4b798bb MR |
835 | continue; |
836 | } | |
837 | ||
838 | drc_count++; | |
839 | ||
840 | /* ibm,drc-indexes */ | |
0b55aa91 | 841 | drc_index = cpu_to_be32(spapr_drc_index(drc)); |
e4b798bb MR |
842 | g_array_append_val(drc_indexes, drc_index); |
843 | ||
844 | /* ibm,drc-power-domains */ | |
845 | drc_power_domain = cpu_to_be32(-1); | |
846 | g_array_append_val(drc_power_domains, drc_power_domain); | |
847 | ||
848 | /* ibm,drc-names */ | |
849 | drc_names = g_string_append(drc_names, drck->get_name(drc)); | |
850 | drc_names = g_string_insert_len(drc_names, -1, "\0", 1); | |
851 | ||
852 | /* ibm,drc-types */ | |
1693ea16 | 853 | drc_types = g_string_append(drc_types, drck->typename); |
e4b798bb MR |
854 | drc_types = g_string_insert_len(drc_types, -1, "\0", 1); |
855 | } | |
856 | ||
857 | /* now write the drc count into the space we reserved at the | |
858 | * beginning of the arrays previously | |
859 | */ | |
860 | *(uint32_t *)drc_indexes->data = cpu_to_be32(drc_count); | |
861 | *(uint32_t *)drc_power_domains->data = cpu_to_be32(drc_count); | |
862 | *(uint32_t *)drc_names->str = cpu_to_be32(drc_count); | |
863 | *(uint32_t *)drc_types->str = cpu_to_be32(drc_count); | |
864 | ||
865 | ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-indexes", | |
866 | drc_indexes->data, | |
867 | drc_indexes->len * sizeof(uint32_t)); | |
868 | if (ret) { | |
ce9863b7 | 869 | error_report("Couldn't create ibm,drc-indexes property"); |
e4b798bb MR |
870 | goto out; |
871 | } | |
872 | ||
873 | ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-power-domains", | |
874 | drc_power_domains->data, | |
875 | drc_power_domains->len * sizeof(uint32_t)); | |
876 | if (ret) { | |
ce9863b7 | 877 | error_report("Couldn't finalize ibm,drc-power-domains property"); |
e4b798bb MR |
878 | goto out; |
879 | } | |
880 | ||
881 | ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-names", | |
882 | drc_names->str, drc_names->len); | |
883 | if (ret) { | |
ce9863b7 | 884 | error_report("Couldn't finalize ibm,drc-names property"); |
e4b798bb MR |
885 | goto out; |
886 | } | |
887 | ||
888 | ret = fdt_setprop(fdt, fdt_offset, "ibm,drc-types", | |
889 | drc_types->str, drc_types->len); | |
890 | if (ret) { | |
ce9863b7 | 891 | error_report("Couldn't finalize ibm,drc-types property"); |
e4b798bb MR |
892 | goto out; |
893 | } | |
894 | ||
895 | out: | |
896 | g_array_free(drc_indexes, true); | |
897 | g_array_free(drc_power_domains, true); | |
898 | g_string_free(drc_names, true); | |
899 | g_string_free(drc_types, true); | |
900 | ||
901 | return ret; | |
902 | } | |
b89b3d39 DG |
903 | |
904 | /* | |
905 | * RTAS calls | |
906 | */ | |
907 | ||
908 | static bool sensor_type_is_dr(uint32_t sensor_type) | |
909 | { | |
910 | switch (sensor_type) { | |
911 | case RTAS_SENSOR_TYPE_ISOLATION_STATE: | |
912 | case RTAS_SENSOR_TYPE_DR: | |
913 | case RTAS_SENSOR_TYPE_ALLOCATION_STATE: | |
914 | return true; | |
915 | } | |
916 | ||
917 | return false; | |
918 | } | |
919 | ||
920 | static void rtas_set_indicator(PowerPCCPU *cpu, sPAPRMachineState *spapr, | |
921 | uint32_t token, uint32_t nargs, | |
922 | target_ulong args, uint32_t nret, | |
923 | target_ulong rets) | |
924 | { | |
925 | uint32_t sensor_type; | |
926 | uint32_t sensor_index; | |
927 | uint32_t sensor_state; | |
928 | uint32_t ret = RTAS_OUT_SUCCESS; | |
929 | sPAPRDRConnector *drc; | |
930 | sPAPRDRConnectorClass *drck; | |
931 | ||
932 | if (nargs != 3 || nret != 1) { | |
933 | ret = RTAS_OUT_PARAM_ERROR; | |
934 | goto out; | |
935 | } | |
936 | ||
937 | sensor_type = rtas_ld(args, 0); | |
938 | sensor_index = rtas_ld(args, 1); | |
939 | sensor_state = rtas_ld(args, 2); | |
940 | ||
941 | if (!sensor_type_is_dr(sensor_type)) { | |
942 | goto out_unimplemented; | |
943 | } | |
944 | ||
945 | /* if this is a DR sensor we can assume sensor_index == drc_index */ | |
fbf55397 | 946 | drc = spapr_drc_by_index(sensor_index); |
b89b3d39 DG |
947 | if (!drc) { |
948 | trace_spapr_rtas_set_indicator_invalid(sensor_index); | |
949 | ret = RTAS_OUT_PARAM_ERROR; | |
950 | goto out; | |
951 | } | |
952 | drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
953 | ||
954 | switch (sensor_type) { | |
955 | case RTAS_SENSOR_TYPE_ISOLATION_STATE: | |
b89b3d39 DG |
956 | ret = drck->set_isolation_state(drc, sensor_state); |
957 | break; | |
958 | case RTAS_SENSOR_TYPE_DR: | |
959 | ret = drck->set_indicator_state(drc, sensor_state); | |
960 | break; | |
961 | case RTAS_SENSOR_TYPE_ALLOCATION_STATE: | |
962 | ret = drck->set_allocation_state(drc, sensor_state); | |
963 | break; | |
964 | default: | |
965 | goto out_unimplemented; | |
966 | } | |
967 | ||
968 | out: | |
969 | rtas_st(rets, 0, ret); | |
970 | return; | |
971 | ||
972 | out_unimplemented: | |
973 | /* currently only DR-related sensors are implemented */ | |
974 | trace_spapr_rtas_set_indicator_not_supported(sensor_index, sensor_type); | |
975 | rtas_st(rets, 0, RTAS_OUT_NOT_SUPPORTED); | |
976 | } | |
977 | ||
978 | static void rtas_get_sensor_state(PowerPCCPU *cpu, sPAPRMachineState *spapr, | |
979 | uint32_t token, uint32_t nargs, | |
980 | target_ulong args, uint32_t nret, | |
981 | target_ulong rets) | |
982 | { | |
983 | uint32_t sensor_type; | |
984 | uint32_t sensor_index; | |
985 | uint32_t sensor_state = 0; | |
986 | sPAPRDRConnector *drc; | |
987 | sPAPRDRConnectorClass *drck; | |
988 | uint32_t ret = RTAS_OUT_SUCCESS; | |
989 | ||
990 | if (nargs != 2 || nret != 2) { | |
991 | ret = RTAS_OUT_PARAM_ERROR; | |
992 | goto out; | |
993 | } | |
994 | ||
995 | sensor_type = rtas_ld(args, 0); | |
996 | sensor_index = rtas_ld(args, 1); | |
997 | ||
998 | if (sensor_type != RTAS_SENSOR_TYPE_ENTITY_SENSE) { | |
999 | /* currently only DR-related sensors are implemented */ | |
1000 | trace_spapr_rtas_get_sensor_state_not_supported(sensor_index, | |
1001 | sensor_type); | |
1002 | ret = RTAS_OUT_NOT_SUPPORTED; | |
1003 | goto out; | |
1004 | } | |
1005 | ||
fbf55397 | 1006 | drc = spapr_drc_by_index(sensor_index); |
b89b3d39 DG |
1007 | if (!drc) { |
1008 | trace_spapr_rtas_get_sensor_state_invalid(sensor_index); | |
1009 | ret = RTAS_OUT_PARAM_ERROR; | |
1010 | goto out; | |
1011 | } | |
1012 | drck = SPAPR_DR_CONNECTOR_GET_CLASS(drc); | |
1013 | ret = drck->entity_sense(drc, &sensor_state); | |
1014 | ||
1015 | out: | |
1016 | rtas_st(rets, 0, ret); | |
1017 | rtas_st(rets, 1, sensor_state); | |
1018 | } | |
1019 | ||
1020 | /* configure-connector work area offsets, int32_t units for field | |
1021 | * indexes, bytes for field offset/len values. | |
1022 | * | |
1023 | * as documented by PAPR+ v2.7, 13.5.3.5 | |
1024 | */ | |
1025 | #define CC_IDX_NODE_NAME_OFFSET 2 | |
1026 | #define CC_IDX_PROP_NAME_OFFSET 2 | |
1027 | #define CC_IDX_PROP_LEN 3 | |
1028 | #define CC_IDX_PROP_DATA_OFFSET 4 | |
1029 | #define CC_VAL_DATA_OFFSET ((CC_IDX_PROP_DATA_OFFSET + 1) * 4) | |
1030 | #define CC_WA_LEN 4096 | |
1031 | ||
1032 | static void configure_connector_st(target_ulong addr, target_ulong offset, | |
1033 | const void *buf, size_t len) | |
1034 | { | |
1035 | cpu_physical_memory_write(ppc64_phys_to_real(addr + offset), | |
1036 | buf, MIN(len, CC_WA_LEN - offset)); | |
1037 | } | |
1038 | ||
b89b3d39 DG |
1039 | static void rtas_ibm_configure_connector(PowerPCCPU *cpu, |
1040 | sPAPRMachineState *spapr, | |
1041 | uint32_t token, uint32_t nargs, | |
1042 | target_ulong args, uint32_t nret, | |
1043 | target_ulong rets) | |
1044 | { | |
1045 | uint64_t wa_addr; | |
1046 | uint64_t wa_offset; | |
1047 | uint32_t drc_index; | |
1048 | sPAPRDRConnector *drc; | |
b89b3d39 DG |
1049 | sPAPRConfigureConnectorState *ccs; |
1050 | sPAPRDRCCResponse resp = SPAPR_DR_CC_RESPONSE_CONTINUE; | |
1051 | int rc; | |
b89b3d39 DG |
1052 | |
1053 | if (nargs != 2 || nret != 1) { | |
1054 | rtas_st(rets, 0, RTAS_OUT_PARAM_ERROR); | |
1055 | return; | |
1056 | } | |
1057 | ||
1058 | wa_addr = ((uint64_t)rtas_ld(args, 1) << 32) | rtas_ld(args, 0); | |
1059 | ||
1060 | drc_index = rtas_ld(wa_addr, 0); | |
fbf55397 | 1061 | drc = spapr_drc_by_index(drc_index); |
b89b3d39 DG |
1062 | if (!drc) { |
1063 | trace_spapr_rtas_ibm_configure_connector_invalid(drc_index); | |
1064 | rc = RTAS_OUT_PARAM_ERROR; | |
1065 | goto out; | |
1066 | } | |
1067 | ||
88af6ea5 | 1068 | if (!drc->fdt) { |
b89b3d39 DG |
1069 | trace_spapr_rtas_ibm_configure_connector_missing_fdt(drc_index); |
1070 | rc = SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE; | |
1071 | goto out; | |
1072 | } | |
1073 | ||
b8fdd530 | 1074 | ccs = drc->ccs; |
b89b3d39 DG |
1075 | if (!ccs) { |
1076 | ccs = g_new0(sPAPRConfigureConnectorState, 1); | |
88af6ea5 | 1077 | ccs->fdt_offset = drc->fdt_start_offset; |
b8fdd530 | 1078 | drc->ccs = ccs; |
b89b3d39 DG |
1079 | } |
1080 | ||
1081 | do { | |
1082 | uint32_t tag; | |
1083 | const char *name; | |
1084 | const struct fdt_property *prop; | |
1085 | int fdt_offset_next, prop_len; | |
1086 | ||
88af6ea5 | 1087 | tag = fdt_next_tag(drc->fdt, ccs->fdt_offset, &fdt_offset_next); |
b89b3d39 DG |
1088 | |
1089 | switch (tag) { | |
1090 | case FDT_BEGIN_NODE: | |
1091 | ccs->fdt_depth++; | |
88af6ea5 | 1092 | name = fdt_get_name(drc->fdt, ccs->fdt_offset, NULL); |
b89b3d39 DG |
1093 | |
1094 | /* provide the name of the next OF node */ | |
1095 | wa_offset = CC_VAL_DATA_OFFSET; | |
1096 | rtas_st(wa_addr, CC_IDX_NODE_NAME_OFFSET, wa_offset); | |
1097 | configure_connector_st(wa_addr, wa_offset, name, strlen(name) + 1); | |
1098 | resp = SPAPR_DR_CC_RESPONSE_NEXT_CHILD; | |
1099 | break; | |
1100 | case FDT_END_NODE: | |
1101 | ccs->fdt_depth--; | |
1102 | if (ccs->fdt_depth == 0) { | |
4f65ce00 | 1103 | sPAPRDRIsolationState state = drc->isolation_state; |
0b55aa91 | 1104 | uint32_t drc_index = spapr_drc_index(drc); |
b89b3d39 DG |
1105 | /* done sending the device tree, don't need to track |
1106 | * the state anymore | |
1107 | */ | |
0b55aa91 | 1108 | trace_spapr_drc_set_configured(drc_index); |
4f65ce00 DG |
1109 | if (state == SPAPR_DR_ISOLATION_STATE_UNISOLATED) { |
1110 | drc->configured = true; | |
1111 | } else { | |
1112 | /* guest should be not configuring an isolated device */ | |
0b55aa91 | 1113 | trace_spapr_drc_set_configured_skipping(drc_index); |
4f65ce00 | 1114 | } |
b8fdd530 DG |
1115 | g_free(ccs); |
1116 | drc->ccs = NULL; | |
b89b3d39 DG |
1117 | ccs = NULL; |
1118 | resp = SPAPR_DR_CC_RESPONSE_SUCCESS; | |
1119 | } else { | |
1120 | resp = SPAPR_DR_CC_RESPONSE_PREV_PARENT; | |
1121 | } | |
1122 | break; | |
1123 | case FDT_PROP: | |
88af6ea5 | 1124 | prop = fdt_get_property_by_offset(drc->fdt, ccs->fdt_offset, |
b89b3d39 | 1125 | &prop_len); |
88af6ea5 | 1126 | name = fdt_string(drc->fdt, fdt32_to_cpu(prop->nameoff)); |
b89b3d39 DG |
1127 | |
1128 | /* provide the name of the next OF property */ | |
1129 | wa_offset = CC_VAL_DATA_OFFSET; | |
1130 | rtas_st(wa_addr, CC_IDX_PROP_NAME_OFFSET, wa_offset); | |
1131 | configure_connector_st(wa_addr, wa_offset, name, strlen(name) + 1); | |
1132 | ||
1133 | /* provide the length and value of the OF property. data gets | |
1134 | * placed immediately after NULL terminator of the OF property's | |
1135 | * name string | |
1136 | */ | |
1137 | wa_offset += strlen(name) + 1, | |
1138 | rtas_st(wa_addr, CC_IDX_PROP_LEN, prop_len); | |
1139 | rtas_st(wa_addr, CC_IDX_PROP_DATA_OFFSET, wa_offset); | |
1140 | configure_connector_st(wa_addr, wa_offset, prop->data, prop_len); | |
1141 | resp = SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY; | |
1142 | break; | |
1143 | case FDT_END: | |
1144 | resp = SPAPR_DR_CC_RESPONSE_ERROR; | |
1145 | default: | |
1146 | /* keep seeking for an actionable tag */ | |
1147 | break; | |
1148 | } | |
1149 | if (ccs) { | |
1150 | ccs->fdt_offset = fdt_offset_next; | |
1151 | } | |
1152 | } while (resp == SPAPR_DR_CC_RESPONSE_CONTINUE); | |
1153 | ||
1154 | rc = resp; | |
1155 | out: | |
1156 | rtas_st(rets, 0, rc); | |
1157 | } | |
1158 | ||
1159 | static void spapr_drc_register_types(void) | |
1160 | { | |
1161 | type_register_static(&spapr_dr_connector_info); | |
2d335818 DG |
1162 | type_register_static(&spapr_drc_physical_info); |
1163 | type_register_static(&spapr_drc_logical_info); | |
1164 | type_register_static(&spapr_drc_cpu_info); | |
1165 | type_register_static(&spapr_drc_pci_info); | |
1166 | type_register_static(&spapr_drc_lmb_info); | |
b89b3d39 DG |
1167 | |
1168 | spapr_rtas_register(RTAS_SET_INDICATOR, "set-indicator", | |
1169 | rtas_set_indicator); | |
1170 | spapr_rtas_register(RTAS_GET_SENSOR_STATE, "get-sensor-state", | |
1171 | rtas_get_sensor_state); | |
1172 | spapr_rtas_register(RTAS_IBM_CONFIGURE_CONNECTOR, "ibm,configure-connector", | |
1173 | rtas_ibm_configure_connector); | |
1174 | } | |
1175 | type_init(spapr_drc_register_types) |