2 * QEMU SPAPR Dynamic Reconfiguration Connector Implementation
4 * Copyright IBM Corp. 2014
7 * Michael Roth <mdroth@linux.vnet.ibm.com>
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.
13 #include "qemu/osdep.h"
14 #include "qapi/error.h"
15 #include "qapi/qmp/qnull.h"
17 #include "qemu/cutils.h"
18 #include "hw/ppc/spapr_drc.h"
19 #include "qom/object.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 */
27 #define DRC_CONTAINER_PATH "/dr-connector"
28 #define DRC_INDEX_TYPE_SHIFT 28
29 #define DRC_INDEX_ID_MASK ((1ULL << DRC_INDEX_TYPE_SHIFT) - 1)
31 sPAPRDRConnectorType
spapr_drc_type(sPAPRDRConnector
*drc
)
33 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
35 return 1 << drck
->typeshift
;
38 uint32_t spapr_drc_index(sPAPRDRConnector
*drc
)
40 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
42 /* no set format for a drc index: it only needs to be globally
43 * unique. this is how we encode the DRC type on bare-metal
44 * however, so might as well do that here
46 return (drck
->typeshift
<< DRC_INDEX_TYPE_SHIFT
)
47 | (drc
->id
& DRC_INDEX_ID_MASK
);
50 static uint32_t drc_isolate_physical(sPAPRDRConnector
*drc
)
53 case SPAPR_DRC_STATE_PHYSICAL_POWERON
:
54 return RTAS_OUT_SUCCESS
; /* Nothing to do */
55 case SPAPR_DRC_STATE_PHYSICAL_CONFIGURED
:
56 break; /* see below */
57 case SPAPR_DRC_STATE_PHYSICAL_UNISOLATE
:
58 return RTAS_OUT_PARAM_ERROR
; /* not allowed */
60 g_assert_not_reached();
63 drc
->state
= SPAPR_DRC_STATE_PHYSICAL_POWERON
;
65 if (drc
->unplug_requested
) {
66 uint32_t drc_index
= spapr_drc_index(drc
);
67 trace_spapr_drc_set_isolation_state_finalizing(drc_index
);
68 spapr_drc_detach(drc
);
71 return RTAS_OUT_SUCCESS
;
74 static uint32_t drc_unisolate_physical(sPAPRDRConnector
*drc
)
77 case SPAPR_DRC_STATE_PHYSICAL_UNISOLATE
:
78 case SPAPR_DRC_STATE_PHYSICAL_CONFIGURED
:
79 return RTAS_OUT_SUCCESS
; /* Nothing to do */
80 case SPAPR_DRC_STATE_PHYSICAL_POWERON
:
81 break; /* see below */
83 g_assert_not_reached();
86 /* cannot unisolate a non-existent resource, and, or resources
87 * which are in an 'UNUSABLE' allocation state. (PAPR 2.7,
91 return RTAS_OUT_NO_SUCH_INDICATOR
;
94 drc
->state
= SPAPR_DRC_STATE_PHYSICAL_UNISOLATE
;
95 drc
->ccs_offset
= drc
->fdt_start_offset
;
98 return RTAS_OUT_SUCCESS
;
101 static uint32_t drc_isolate_logical(sPAPRDRConnector
*drc
)
103 switch (drc
->state
) {
104 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
105 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
106 return RTAS_OUT_SUCCESS
; /* Nothing to do */
107 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
108 break; /* see below */
109 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
110 return RTAS_OUT_PARAM_ERROR
; /* not allowed */
112 g_assert_not_reached();
116 * Fail any requests to ISOLATE the LMB DRC if this LMB doesn't
117 * belong to a DIMM device that is marked for removal.
119 * Currently the guest userspace tool drmgr that drives the memory
120 * hotplug/unplug will just try to remove a set of 'removable' LMBs
121 * in response to a hot unplug request that is based on drc-count.
122 * If the LMB being removed doesn't belong to a DIMM device that is
123 * actually being unplugged, fail the isolation request here.
125 if (spapr_drc_type(drc
) == SPAPR_DR_CONNECTOR_TYPE_LMB
126 && !drc
->unplug_requested
) {
127 return RTAS_OUT_HW_ERROR
;
130 drc
->state
= SPAPR_DRC_STATE_LOGICAL_AVAILABLE
;
132 /* if we're awaiting release, but still in an unconfigured state,
133 * it's likely the guest is still in the process of configuring
134 * the device and is transitioning the devices to an ISOLATED
135 * state as a part of that process. so we only complete the
136 * removal when this transition happens for a device in a
137 * configured state, as suggested by the state diagram from PAPR+
140 if (drc
->unplug_requested
) {
141 uint32_t drc_index
= spapr_drc_index(drc
);
142 trace_spapr_drc_set_isolation_state_finalizing(drc_index
);
143 spapr_drc_detach(drc
);
145 return RTAS_OUT_SUCCESS
;
148 static uint32_t drc_unisolate_logical(sPAPRDRConnector
*drc
)
150 switch (drc
->state
) {
151 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
152 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
153 return RTAS_OUT_SUCCESS
; /* Nothing to do */
154 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
155 break; /* see below */
156 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
157 return RTAS_OUT_NO_SUCH_INDICATOR
; /* not allowed */
159 g_assert_not_reached();
162 /* Move to AVAILABLE state should have ensured device was present */
165 drc
->state
= SPAPR_DRC_STATE_LOGICAL_UNISOLATE
;
166 drc
->ccs_offset
= drc
->fdt_start_offset
;
169 return RTAS_OUT_SUCCESS
;
172 static uint32_t drc_set_usable(sPAPRDRConnector
*drc
)
174 switch (drc
->state
) {
175 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
176 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
177 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
178 return RTAS_OUT_SUCCESS
; /* Nothing to do */
179 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
180 break; /* see below */
182 g_assert_not_reached();
185 /* if there's no resource/device associated with the DRC, there's
186 * no way for us to put it in an allocation state consistent with
187 * being 'USABLE'. PAPR 2.7, 13.5.3.4 documents that this should
188 * result in an RTAS return code of -3 / "no such indicator"
191 return RTAS_OUT_NO_SUCH_INDICATOR
;
193 if (drc
->unplug_requested
) {
194 /* Don't allow the guest to move a device away from UNUSABLE
195 * state when we want to unplug it */
196 return RTAS_OUT_NO_SUCH_INDICATOR
;
199 drc
->state
= SPAPR_DRC_STATE_LOGICAL_AVAILABLE
;
201 return RTAS_OUT_SUCCESS
;
204 static uint32_t drc_set_unusable(sPAPRDRConnector
*drc
)
206 switch (drc
->state
) {
207 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
208 return RTAS_OUT_SUCCESS
; /* Nothing to do */
209 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
210 break; /* see below */
211 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
212 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
213 return RTAS_OUT_NO_SUCH_INDICATOR
; /* not allowed */
215 g_assert_not_reached();
218 drc
->state
= SPAPR_DRC_STATE_LOGICAL_UNUSABLE
;
219 if (drc
->unplug_requested
) {
220 uint32_t drc_index
= spapr_drc_index(drc
);
221 trace_spapr_drc_set_allocation_state_finalizing(drc_index
);
222 spapr_drc_detach(drc
);
225 return RTAS_OUT_SUCCESS
;
228 static const char *spapr_drc_name(sPAPRDRConnector
*drc
)
230 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
232 /* human-readable name for a DRC to encode into the DT
233 * description. this is mainly only used within a guest in place
234 * of the unique DRC index.
236 * in the case of VIO/PCI devices, it corresponds to a "location
237 * code" that maps a logical device/function (DRC index) to a
238 * physical (or virtual in the case of VIO) location in the system
239 * by chaining together the "location label" for each
240 * encapsulating component.
242 * since this is more to do with diagnosing physical hardware
243 * issues than guest compatibility, we choose location codes/DRC
244 * names that adhere to the documented format, but avoid encoding
245 * the entire topology information into the label/code, instead
246 * just using the location codes based on the labels for the
247 * endpoints (VIO/PCI adaptor connectors), which is basically just
248 * "C" followed by an integer ID.
250 * DRC names as documented by PAPR+ v2.7, 13.5.2.4
251 * location codes as documented by PAPR+ v2.7, 12.3.1.5
253 return g_strdup_printf("%s%d", drck
->drc_name_prefix
, drc
->id
);
257 * dr-entity-sense sensor value
258 * returned via get-sensor-state RTAS calls
259 * as expected by state diagram in PAPR+ 2.7, 13.4
260 * based on the current allocation/indicator/power states
261 * for the DR connector.
263 static sPAPRDREntitySense
physical_entity_sense(sPAPRDRConnector
*drc
)
265 /* this assumes all PCI devices are assigned to a 'live insertion'
266 * power domain, where QEMU manages power state automatically as
267 * opposed to the guest. present, non-PCI resources are unaffected
270 return drc
->dev
? SPAPR_DR_ENTITY_SENSE_PRESENT
271 : SPAPR_DR_ENTITY_SENSE_EMPTY
;
274 static sPAPRDREntitySense
logical_entity_sense(sPAPRDRConnector
*drc
)
276 switch (drc
->state
) {
277 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
278 return SPAPR_DR_ENTITY_SENSE_UNUSABLE
;
279 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
280 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
281 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
283 return SPAPR_DR_ENTITY_SENSE_PRESENT
;
285 g_assert_not_reached();
289 static void prop_get_index(Object
*obj
, Visitor
*v
, const char *name
,
290 void *opaque
, Error
**errp
)
292 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(obj
);
293 uint32_t value
= spapr_drc_index(drc
);
294 visit_type_uint32(v
, name
, &value
, errp
);
297 static void prop_get_fdt(Object
*obj
, Visitor
*v
, const char *name
,
298 void *opaque
, Error
**errp
)
300 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(obj
);
303 int fdt_offset_next
, fdt_offset
, fdt_depth
;
307 visit_type_null(v
, NULL
, &null
, errp
);
313 fdt_offset
= drc
->fdt_start_offset
;
317 const char *name
= NULL
;
318 const struct fdt_property
*prop
= NULL
;
319 int prop_len
= 0, name_len
= 0;
322 tag
= fdt_next_tag(fdt
, fdt_offset
, &fdt_offset_next
);
326 name
= fdt_get_name(fdt
, fdt_offset
, &name_len
);
327 visit_start_struct(v
, name
, NULL
, 0, &err
);
329 error_propagate(errp
, err
);
334 /* shouldn't ever see an FDT_END_NODE before FDT_BEGIN_NODE */
335 g_assert(fdt_depth
> 0);
336 visit_check_struct(v
, &err
);
337 visit_end_struct(v
, NULL
);
339 error_propagate(errp
, err
);
346 prop
= fdt_get_property_by_offset(fdt
, fdt_offset
, &prop_len
);
347 name
= fdt_string(fdt
, fdt32_to_cpu(prop
->nameoff
));
348 visit_start_list(v
, name
, NULL
, 0, &err
);
350 error_propagate(errp
, err
);
353 for (i
= 0; i
< prop_len
; i
++) {
354 visit_type_uint8(v
, NULL
, (uint8_t *)&prop
->data
[i
], &err
);
356 error_propagate(errp
, err
);
360 visit_check_list(v
, &err
);
361 visit_end_list(v
, NULL
);
363 error_propagate(errp
, err
);
369 error_setg(&error_abort
, "device FDT in unexpected state: %d", tag
);
371 fdt_offset
= fdt_offset_next
;
372 } while (fdt_depth
!= 0);
375 void spapr_drc_attach(sPAPRDRConnector
*drc
, DeviceState
*d
, void *fdt
,
376 int fdt_start_offset
, Error
**errp
)
378 trace_spapr_drc_attach(spapr_drc_index(drc
));
381 error_setg(errp
, "an attached device is still awaiting release");
384 g_assert((drc
->state
== SPAPR_DRC_STATE_LOGICAL_UNUSABLE
)
385 || (drc
->state
== SPAPR_DRC_STATE_PHYSICAL_POWERON
));
390 drc
->fdt_start_offset
= fdt_start_offset
;
392 object_property_add_link(OBJECT(drc
), "device",
393 object_get_typename(OBJECT(drc
->dev
)),
394 (Object
**)(&drc
->dev
),
398 static void spapr_drc_release(sPAPRDRConnector
*drc
)
400 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
402 drck
->release(drc
->dev
);
404 drc
->unplug_requested
= false;
407 drc
->fdt_start_offset
= 0;
408 object_property_del(OBJECT(drc
), "device", &error_abort
);
412 void spapr_drc_detach(sPAPRDRConnector
*drc
)
414 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
416 trace_spapr_drc_detach(spapr_drc_index(drc
));
420 drc
->unplug_requested
= true;
422 if (drc
->state
!= drck
->empty_state
) {
423 trace_spapr_drc_awaiting_quiesce(spapr_drc_index(drc
));
427 spapr_drc_release(drc
);
430 void spapr_drc_reset(sPAPRDRConnector
*drc
)
432 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
434 trace_spapr_drc_reset(spapr_drc_index(drc
));
436 /* immediately upon reset we can safely assume DRCs whose devices
437 * are pending removal can be safely removed.
439 if (drc
->unplug_requested
) {
440 spapr_drc_release(drc
);
444 /* A device present at reset is ready to go, same as coldplugged */
445 drc
->state
= drck
->ready_state
;
447 * Ensure that we are able to send the FDT fragment again
448 * via configure-connector call if the guest requests.
450 drc
->ccs_offset
= drc
->fdt_start_offset
;
453 drc
->state
= drck
->empty_state
;
454 drc
->ccs_offset
= -1;
459 bool spapr_drc_needed(void *opaque
)
461 sPAPRDRConnector
*drc
= (sPAPRDRConnector
*)opaque
;
462 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
464 /* If no dev is plugged in there is no need to migrate the DRC state */
470 * We need to migrate the state if it's not equal to the expected
471 * long-term state, which is the same as the coldplugged initial
473 return (drc
->state
!= drck
->ready_state
);
476 static const VMStateDescription vmstate_spapr_drc
= {
479 .minimum_version_id
= 1,
480 .needed
= spapr_drc_needed
,
481 .fields
= (VMStateField
[]) {
482 VMSTATE_UINT32(state
, sPAPRDRConnector
),
483 VMSTATE_END_OF_LIST()
487 static void realize(DeviceState
*d
, Error
**errp
)
489 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(d
);
490 Object
*root_container
;
495 trace_spapr_drc_realize(spapr_drc_index(drc
));
496 /* NOTE: we do this as part of realize/unrealize due to the fact
497 * that the guest will communicate with the DRC via RTAS calls
498 * referencing the global DRC index. By unlinking the DRC
499 * from DRC_CONTAINER_PATH/<drc_index> we effectively make it
500 * inaccessible by the guest, since lookups rely on this path
501 * existing in the composition tree
503 root_container
= container_get(object_get_root(), DRC_CONTAINER_PATH
);
504 link_name
= g_strdup_printf("%x", spapr_drc_index(drc
));
505 child_name
= object_get_canonical_path_component(OBJECT(drc
));
506 trace_spapr_drc_realize_child(spapr_drc_index(drc
), child_name
);
507 object_property_add_alias(root_container
, link_name
,
508 drc
->owner
, child_name
, &err
);
512 error_propagate(errp
, err
);
515 vmstate_register(DEVICE(drc
), spapr_drc_index(drc
), &vmstate_spapr_drc
,
517 trace_spapr_drc_realize_complete(spapr_drc_index(drc
));
520 static void unrealize(DeviceState
*d
, Error
**errp
)
522 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(d
);
523 Object
*root_container
;
526 trace_spapr_drc_unrealize(spapr_drc_index(drc
));
527 vmstate_unregister(DEVICE(drc
), &vmstate_spapr_drc
, drc
);
528 root_container
= container_get(object_get_root(), DRC_CONTAINER_PATH
);
529 name
= g_strdup_printf("%x", spapr_drc_index(drc
));
530 object_property_del(root_container
, name
, errp
);
534 sPAPRDRConnector
*spapr_dr_connector_new(Object
*owner
, const char *type
,
537 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(object_new(type
));
542 prop_name
= g_strdup_printf("dr-connector[%"PRIu32
"]",
543 spapr_drc_index(drc
));
544 object_property_add_child(owner
, prop_name
, OBJECT(drc
), &error_abort
);
545 object_unref(OBJECT(drc
));
546 object_property_set_bool(OBJECT(drc
), true, "realized", NULL
);
552 static void spapr_dr_connector_instance_init(Object
*obj
)
554 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(obj
);
555 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
557 object_property_add_uint32_ptr(obj
, "id", &drc
->id
, NULL
);
558 object_property_add(obj
, "index", "uint32", prop_get_index
,
559 NULL
, NULL
, NULL
, NULL
);
560 object_property_add(obj
, "fdt", "struct", prop_get_fdt
,
561 NULL
, NULL
, NULL
, NULL
);
562 drc
->state
= drck
->empty_state
;
565 static void spapr_dr_connector_class_init(ObjectClass
*k
, void *data
)
567 DeviceClass
*dk
= DEVICE_CLASS(k
);
569 dk
->realize
= realize
;
570 dk
->unrealize
= unrealize
;
572 * Reason: it crashes FIXME find and document the real reason
574 dk
->user_creatable
= false;
577 static bool drc_physical_needed(void *opaque
)
579 sPAPRDRCPhysical
*drcp
= (sPAPRDRCPhysical
*)opaque
;
580 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(drcp
);
582 if ((drc
->dev
&& (drcp
->dr_indicator
== SPAPR_DR_INDICATOR_ACTIVE
))
583 || (!drc
->dev
&& (drcp
->dr_indicator
== SPAPR_DR_INDICATOR_INACTIVE
))) {
589 static const VMStateDescription vmstate_spapr_drc_physical
= {
590 .name
= "spapr_drc/physical",
592 .minimum_version_id
= 1,
593 .needed
= drc_physical_needed
,
594 .fields
= (VMStateField
[]) {
595 VMSTATE_UINT32(dr_indicator
, sPAPRDRCPhysical
),
596 VMSTATE_END_OF_LIST()
600 static void drc_physical_reset(void *opaque
)
602 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(opaque
);
603 sPAPRDRCPhysical
*drcp
= SPAPR_DRC_PHYSICAL(drc
);
606 drcp
->dr_indicator
= SPAPR_DR_INDICATOR_ACTIVE
;
608 drcp
->dr_indicator
= SPAPR_DR_INDICATOR_INACTIVE
;
612 static void realize_physical(DeviceState
*d
, Error
**errp
)
614 sPAPRDRCPhysical
*drcp
= SPAPR_DRC_PHYSICAL(d
);
615 Error
*local_err
= NULL
;
617 realize(d
, &local_err
);
619 error_propagate(errp
, local_err
);
623 vmstate_register(DEVICE(drcp
), spapr_drc_index(SPAPR_DR_CONNECTOR(drcp
)),
624 &vmstate_spapr_drc_physical
, drcp
);
625 qemu_register_reset(drc_physical_reset
, drcp
);
628 static void unrealize_physical(DeviceState
*d
, Error
**errp
)
630 sPAPRDRCPhysical
*drcp
= SPAPR_DRC_PHYSICAL(d
);
631 Error
*local_err
= NULL
;
633 unrealize(d
, &local_err
);
635 error_propagate(errp
, local_err
);
639 vmstate_unregister(DEVICE(drcp
), &vmstate_spapr_drc_physical
, drcp
);
640 qemu_unregister_reset(drc_physical_reset
, drcp
);
643 static void spapr_drc_physical_class_init(ObjectClass
*k
, void *data
)
645 DeviceClass
*dk
= DEVICE_CLASS(k
);
646 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
648 dk
->realize
= realize_physical
;
649 dk
->unrealize
= unrealize_physical
;
650 drck
->dr_entity_sense
= physical_entity_sense
;
651 drck
->isolate
= drc_isolate_physical
;
652 drck
->unisolate
= drc_unisolate_physical
;
653 drck
->ready_state
= SPAPR_DRC_STATE_PHYSICAL_CONFIGURED
;
654 drck
->empty_state
= SPAPR_DRC_STATE_PHYSICAL_POWERON
;
657 static void spapr_drc_logical_class_init(ObjectClass
*k
, void *data
)
659 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
661 drck
->dr_entity_sense
= logical_entity_sense
;
662 drck
->isolate
= drc_isolate_logical
;
663 drck
->unisolate
= drc_unisolate_logical
;
664 drck
->ready_state
= SPAPR_DRC_STATE_LOGICAL_CONFIGURED
;
665 drck
->empty_state
= SPAPR_DRC_STATE_LOGICAL_UNUSABLE
;
668 static void spapr_drc_cpu_class_init(ObjectClass
*k
, void *data
)
670 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
672 drck
->typeshift
= SPAPR_DR_CONNECTOR_TYPE_SHIFT_CPU
;
673 drck
->typename
= "CPU";
674 drck
->drc_name_prefix
= "CPU ";
675 drck
->release
= spapr_core_release
;
678 static void spapr_drc_pci_class_init(ObjectClass
*k
, void *data
)
680 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
682 drck
->typeshift
= SPAPR_DR_CONNECTOR_TYPE_SHIFT_PCI
;
683 drck
->typename
= "28";
684 drck
->drc_name_prefix
= "C";
685 drck
->release
= spapr_phb_remove_pci_device_cb
;
688 static void spapr_drc_lmb_class_init(ObjectClass
*k
, void *data
)
690 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
692 drck
->typeshift
= SPAPR_DR_CONNECTOR_TYPE_SHIFT_LMB
;
693 drck
->typename
= "MEM";
694 drck
->drc_name_prefix
= "LMB ";
695 drck
->release
= spapr_lmb_release
;
698 static const TypeInfo spapr_dr_connector_info
= {
699 .name
= TYPE_SPAPR_DR_CONNECTOR
,
700 .parent
= TYPE_DEVICE
,
701 .instance_size
= sizeof(sPAPRDRConnector
),
702 .instance_init
= spapr_dr_connector_instance_init
,
703 .class_size
= sizeof(sPAPRDRConnectorClass
),
704 .class_init
= spapr_dr_connector_class_init
,
708 static const TypeInfo spapr_drc_physical_info
= {
709 .name
= TYPE_SPAPR_DRC_PHYSICAL
,
710 .parent
= TYPE_SPAPR_DR_CONNECTOR
,
711 .instance_size
= sizeof(sPAPRDRCPhysical
),
712 .class_init
= spapr_drc_physical_class_init
,
716 static const TypeInfo spapr_drc_logical_info
= {
717 .name
= TYPE_SPAPR_DRC_LOGICAL
,
718 .parent
= TYPE_SPAPR_DR_CONNECTOR
,
719 .class_init
= spapr_drc_logical_class_init
,
723 static const TypeInfo spapr_drc_cpu_info
= {
724 .name
= TYPE_SPAPR_DRC_CPU
,
725 .parent
= TYPE_SPAPR_DRC_LOGICAL
,
726 .class_init
= spapr_drc_cpu_class_init
,
729 static const TypeInfo spapr_drc_pci_info
= {
730 .name
= TYPE_SPAPR_DRC_PCI
,
731 .parent
= TYPE_SPAPR_DRC_PHYSICAL
,
732 .class_init
= spapr_drc_pci_class_init
,
735 static const TypeInfo spapr_drc_lmb_info
= {
736 .name
= TYPE_SPAPR_DRC_LMB
,
737 .parent
= TYPE_SPAPR_DRC_LOGICAL
,
738 .class_init
= spapr_drc_lmb_class_init
,
741 /* helper functions for external users */
743 sPAPRDRConnector
*spapr_drc_by_index(uint32_t index
)
748 name
= g_strdup_printf("%s/%x", DRC_CONTAINER_PATH
, index
);
749 obj
= object_resolve_path(name
, NULL
);
752 return !obj
? NULL
: SPAPR_DR_CONNECTOR(obj
);
755 sPAPRDRConnector
*spapr_drc_by_id(const char *type
, uint32_t id
)
757 sPAPRDRConnectorClass
*drck
758 = SPAPR_DR_CONNECTOR_CLASS(object_class_by_name(type
));
760 return spapr_drc_by_index(drck
->typeshift
<< DRC_INDEX_TYPE_SHIFT
761 | (id
& DRC_INDEX_ID_MASK
));
765 * spapr_drc_populate_dt
767 * @fdt: libfdt device tree
768 * @path: path in the DT to generate properties
769 * @owner: parent Object/DeviceState for which to generate DRC
771 * @drc_type_mask: mask of sPAPRDRConnectorType values corresponding
772 * to the types of DRCs to generate entries for
774 * generate OF properties to describe DRC topology/indices to guests
776 * as documented in PAPR+ v2.1, 13.5.2
778 int spapr_drc_populate_dt(void *fdt
, int fdt_offset
, Object
*owner
,
779 uint32_t drc_type_mask
)
781 Object
*root_container
;
782 ObjectProperty
*prop
;
783 ObjectPropertyIterator iter
;
784 uint32_t drc_count
= 0;
785 GArray
*drc_indexes
, *drc_power_domains
;
786 GString
*drc_names
, *drc_types
;
789 /* the first entry of each properties is a 32-bit integer encoding
790 * the number of elements in the array. we won't know this until
791 * we complete the iteration through all the matching DRCs, but
792 * reserve the space now and set the offsets accordingly so we
793 * can fill them in later.
795 drc_indexes
= g_array_new(false, true, sizeof(uint32_t));
796 drc_indexes
= g_array_set_size(drc_indexes
, 1);
797 drc_power_domains
= g_array_new(false, true, sizeof(uint32_t));
798 drc_power_domains
= g_array_set_size(drc_power_domains
, 1);
799 drc_names
= g_string_set_size(g_string_new(NULL
), sizeof(uint32_t));
800 drc_types
= g_string_set_size(g_string_new(NULL
), sizeof(uint32_t));
802 /* aliases for all DRConnector objects will be rooted in QOM
803 * composition tree at DRC_CONTAINER_PATH
805 root_container
= container_get(object_get_root(), DRC_CONTAINER_PATH
);
807 object_property_iter_init(&iter
, root_container
);
808 while ((prop
= object_property_iter_next(&iter
))) {
810 sPAPRDRConnector
*drc
;
811 sPAPRDRConnectorClass
*drck
;
812 uint32_t drc_index
, drc_power_domain
;
814 if (!strstart(prop
->type
, "link<", NULL
)) {
818 obj
= object_property_get_link(root_container
, prop
->name
, NULL
);
819 drc
= SPAPR_DR_CONNECTOR(obj
);
820 drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
822 if (owner
&& (drc
->owner
!= owner
)) {
826 if ((spapr_drc_type(drc
) & drc_type_mask
) == 0) {
832 /* ibm,drc-indexes */
833 drc_index
= cpu_to_be32(spapr_drc_index(drc
));
834 g_array_append_val(drc_indexes
, drc_index
);
836 /* ibm,drc-power-domains */
837 drc_power_domain
= cpu_to_be32(-1);
838 g_array_append_val(drc_power_domains
, drc_power_domain
);
841 drc_names
= g_string_append(drc_names
, spapr_drc_name(drc
));
842 drc_names
= g_string_insert_len(drc_names
, -1, "\0", 1);
845 drc_types
= g_string_append(drc_types
, drck
->typename
);
846 drc_types
= g_string_insert_len(drc_types
, -1, "\0", 1);
849 /* now write the drc count into the space we reserved at the
850 * beginning of the arrays previously
852 *(uint32_t *)drc_indexes
->data
= cpu_to_be32(drc_count
);
853 *(uint32_t *)drc_power_domains
->data
= cpu_to_be32(drc_count
);
854 *(uint32_t *)drc_names
->str
= cpu_to_be32(drc_count
);
855 *(uint32_t *)drc_types
->str
= cpu_to_be32(drc_count
);
857 ret
= fdt_setprop(fdt
, fdt_offset
, "ibm,drc-indexes",
859 drc_indexes
->len
* sizeof(uint32_t));
861 error_report("Couldn't create ibm,drc-indexes property");
865 ret
= fdt_setprop(fdt
, fdt_offset
, "ibm,drc-power-domains",
866 drc_power_domains
->data
,
867 drc_power_domains
->len
* sizeof(uint32_t));
869 error_report("Couldn't finalize ibm,drc-power-domains property");
873 ret
= fdt_setprop(fdt
, fdt_offset
, "ibm,drc-names",
874 drc_names
->str
, drc_names
->len
);
876 error_report("Couldn't finalize ibm,drc-names property");
880 ret
= fdt_setprop(fdt
, fdt_offset
, "ibm,drc-types",
881 drc_types
->str
, drc_types
->len
);
883 error_report("Couldn't finalize ibm,drc-types property");
888 g_array_free(drc_indexes
, true);
889 g_array_free(drc_power_domains
, true);
890 g_string_free(drc_names
, true);
891 g_string_free(drc_types
, true);
900 static uint32_t rtas_set_isolation_state(uint32_t idx
, uint32_t state
)
902 sPAPRDRConnector
*drc
= spapr_drc_by_index(idx
);
903 sPAPRDRConnectorClass
*drck
;
906 return RTAS_OUT_NO_SUCH_INDICATOR
;
909 trace_spapr_drc_set_isolation_state(spapr_drc_index(drc
), state
);
911 drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
914 case SPAPR_DR_ISOLATION_STATE_ISOLATED
:
915 return drck
->isolate(drc
);
917 case SPAPR_DR_ISOLATION_STATE_UNISOLATED
:
918 return drck
->unisolate(drc
);
921 return RTAS_OUT_PARAM_ERROR
;
925 static uint32_t rtas_set_allocation_state(uint32_t idx
, uint32_t state
)
927 sPAPRDRConnector
*drc
= spapr_drc_by_index(idx
);
929 if (!drc
|| !object_dynamic_cast(OBJECT(drc
), TYPE_SPAPR_DRC_LOGICAL
)) {
930 return RTAS_OUT_NO_SUCH_INDICATOR
;
933 trace_spapr_drc_set_allocation_state(spapr_drc_index(drc
), state
);
936 case SPAPR_DR_ALLOCATION_STATE_USABLE
:
937 return drc_set_usable(drc
);
939 case SPAPR_DR_ALLOCATION_STATE_UNUSABLE
:
940 return drc_set_unusable(drc
);
943 return RTAS_OUT_PARAM_ERROR
;
947 static uint32_t rtas_set_dr_indicator(uint32_t idx
, uint32_t state
)
949 sPAPRDRConnector
*drc
= spapr_drc_by_index(idx
);
951 if (!drc
|| !object_dynamic_cast(OBJECT(drc
), TYPE_SPAPR_DRC_PHYSICAL
)) {
952 return RTAS_OUT_NO_SUCH_INDICATOR
;
954 if ((state
!= SPAPR_DR_INDICATOR_INACTIVE
)
955 && (state
!= SPAPR_DR_INDICATOR_ACTIVE
)
956 && (state
!= SPAPR_DR_INDICATOR_IDENTIFY
)
957 && (state
!= SPAPR_DR_INDICATOR_ACTION
)) {
958 return RTAS_OUT_PARAM_ERROR
; /* bad state parameter */
961 trace_spapr_drc_set_dr_indicator(idx
, state
);
962 SPAPR_DRC_PHYSICAL(drc
)->dr_indicator
= state
;
963 return RTAS_OUT_SUCCESS
;
966 static void rtas_set_indicator(PowerPCCPU
*cpu
, sPAPRMachineState
*spapr
,
968 uint32_t nargs
, target_ulong args
,
969 uint32_t nret
, target_ulong rets
)
971 uint32_t type
, idx
, state
;
972 uint32_t ret
= RTAS_OUT_SUCCESS
;
974 if (nargs
!= 3 || nret
!= 1) {
975 ret
= RTAS_OUT_PARAM_ERROR
;
979 type
= rtas_ld(args
, 0);
980 idx
= rtas_ld(args
, 1);
981 state
= rtas_ld(args
, 2);
984 case RTAS_SENSOR_TYPE_ISOLATION_STATE
:
985 ret
= rtas_set_isolation_state(idx
, state
);
987 case RTAS_SENSOR_TYPE_DR
:
988 ret
= rtas_set_dr_indicator(idx
, state
);
990 case RTAS_SENSOR_TYPE_ALLOCATION_STATE
:
991 ret
= rtas_set_allocation_state(idx
, state
);
994 ret
= RTAS_OUT_NOT_SUPPORTED
;
998 rtas_st(rets
, 0, ret
);
1001 static void rtas_get_sensor_state(PowerPCCPU
*cpu
, sPAPRMachineState
*spapr
,
1002 uint32_t token
, uint32_t nargs
,
1003 target_ulong args
, uint32_t nret
,
1006 uint32_t sensor_type
;
1007 uint32_t sensor_index
;
1008 uint32_t sensor_state
= 0;
1009 sPAPRDRConnector
*drc
;
1010 sPAPRDRConnectorClass
*drck
;
1011 uint32_t ret
= RTAS_OUT_SUCCESS
;
1013 if (nargs
!= 2 || nret
!= 2) {
1014 ret
= RTAS_OUT_PARAM_ERROR
;
1018 sensor_type
= rtas_ld(args
, 0);
1019 sensor_index
= rtas_ld(args
, 1);
1021 if (sensor_type
!= RTAS_SENSOR_TYPE_ENTITY_SENSE
) {
1022 /* currently only DR-related sensors are implemented */
1023 trace_spapr_rtas_get_sensor_state_not_supported(sensor_index
,
1025 ret
= RTAS_OUT_NOT_SUPPORTED
;
1029 drc
= spapr_drc_by_index(sensor_index
);
1031 trace_spapr_rtas_get_sensor_state_invalid(sensor_index
);
1032 ret
= RTAS_OUT_PARAM_ERROR
;
1035 drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
1036 sensor_state
= drck
->dr_entity_sense(drc
);
1039 rtas_st(rets
, 0, ret
);
1040 rtas_st(rets
, 1, sensor_state
);
1043 /* configure-connector work area offsets, int32_t units for field
1044 * indexes, bytes for field offset/len values.
1046 * as documented by PAPR+ v2.7, 13.5.3.5
1048 #define CC_IDX_NODE_NAME_OFFSET 2
1049 #define CC_IDX_PROP_NAME_OFFSET 2
1050 #define CC_IDX_PROP_LEN 3
1051 #define CC_IDX_PROP_DATA_OFFSET 4
1052 #define CC_VAL_DATA_OFFSET ((CC_IDX_PROP_DATA_OFFSET + 1) * 4)
1053 #define CC_WA_LEN 4096
1055 static void configure_connector_st(target_ulong addr
, target_ulong offset
,
1056 const void *buf
, size_t len
)
1058 cpu_physical_memory_write(ppc64_phys_to_real(addr
+ offset
),
1059 buf
, MIN(len
, CC_WA_LEN
- offset
));
1062 static void rtas_ibm_configure_connector(PowerPCCPU
*cpu
,
1063 sPAPRMachineState
*spapr
,
1064 uint32_t token
, uint32_t nargs
,
1065 target_ulong args
, uint32_t nret
,
1071 sPAPRDRConnector
*drc
;
1072 sPAPRDRConnectorClass
*drck
;
1073 sPAPRDRCCResponse resp
= SPAPR_DR_CC_RESPONSE_CONTINUE
;
1076 if (nargs
!= 2 || nret
!= 1) {
1077 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
1081 wa_addr
= ((uint64_t)rtas_ld(args
, 1) << 32) | rtas_ld(args
, 0);
1083 drc_index
= rtas_ld(wa_addr
, 0);
1084 drc
= spapr_drc_by_index(drc_index
);
1086 trace_spapr_rtas_ibm_configure_connector_invalid(drc_index
);
1087 rc
= RTAS_OUT_PARAM_ERROR
;
1091 if ((drc
->state
!= SPAPR_DRC_STATE_LOGICAL_UNISOLATE
)
1092 && (drc
->state
!= SPAPR_DRC_STATE_PHYSICAL_UNISOLATE
)
1093 && (drc
->state
!= SPAPR_DRC_STATE_LOGICAL_CONFIGURED
)
1094 && (drc
->state
!= SPAPR_DRC_STATE_PHYSICAL_CONFIGURED
)) {
1096 * Need to unisolate the device before configuring
1097 * or it should already be in configured state to
1098 * allow configure-connector be called repeatedly.
1100 rc
= SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE
;
1106 drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
1111 const struct fdt_property
*prop
;
1112 int fdt_offset_next
, prop_len
;
1114 tag
= fdt_next_tag(drc
->fdt
, drc
->ccs_offset
, &fdt_offset_next
);
1117 case FDT_BEGIN_NODE
:
1119 name
= fdt_get_name(drc
->fdt
, drc
->ccs_offset
, NULL
);
1121 /* provide the name of the next OF node */
1122 wa_offset
= CC_VAL_DATA_OFFSET
;
1123 rtas_st(wa_addr
, CC_IDX_NODE_NAME_OFFSET
, wa_offset
);
1124 configure_connector_st(wa_addr
, wa_offset
, name
, strlen(name
) + 1);
1125 resp
= SPAPR_DR_CC_RESPONSE_NEXT_CHILD
;
1129 if (drc
->ccs_depth
== 0) {
1130 uint32_t drc_index
= spapr_drc_index(drc
);
1132 /* done sending the device tree, move to configured state */
1133 trace_spapr_drc_set_configured(drc_index
);
1134 drc
->state
= drck
->ready_state
;
1136 * Ensure that we are able to send the FDT fragment
1137 * again via configure-connector call if the guest requests.
1139 drc
->ccs_offset
= drc
->fdt_start_offset
;
1141 fdt_offset_next
= drc
->fdt_start_offset
;
1142 resp
= SPAPR_DR_CC_RESPONSE_SUCCESS
;
1144 resp
= SPAPR_DR_CC_RESPONSE_PREV_PARENT
;
1148 prop
= fdt_get_property_by_offset(drc
->fdt
, drc
->ccs_offset
,
1150 name
= fdt_string(drc
->fdt
, fdt32_to_cpu(prop
->nameoff
));
1152 /* provide the name of the next OF property */
1153 wa_offset
= CC_VAL_DATA_OFFSET
;
1154 rtas_st(wa_addr
, CC_IDX_PROP_NAME_OFFSET
, wa_offset
);
1155 configure_connector_st(wa_addr
, wa_offset
, name
, strlen(name
) + 1);
1157 /* provide the length and value of the OF property. data gets
1158 * placed immediately after NULL terminator of the OF property's
1161 wa_offset
+= strlen(name
) + 1,
1162 rtas_st(wa_addr
, CC_IDX_PROP_LEN
, prop_len
);
1163 rtas_st(wa_addr
, CC_IDX_PROP_DATA_OFFSET
, wa_offset
);
1164 configure_connector_st(wa_addr
, wa_offset
, prop
->data
, prop_len
);
1165 resp
= SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY
;
1168 resp
= SPAPR_DR_CC_RESPONSE_ERROR
;
1170 /* keep seeking for an actionable tag */
1173 if (drc
->ccs_offset
>= 0) {
1174 drc
->ccs_offset
= fdt_offset_next
;
1176 } while (resp
== SPAPR_DR_CC_RESPONSE_CONTINUE
);
1180 rtas_st(rets
, 0, rc
);
1183 static void spapr_drc_register_types(void)
1185 type_register_static(&spapr_dr_connector_info
);
1186 type_register_static(&spapr_drc_physical_info
);
1187 type_register_static(&spapr_drc_logical_info
);
1188 type_register_static(&spapr_drc_cpu_info
);
1189 type_register_static(&spapr_drc_pci_info
);
1190 type_register_static(&spapr_drc_lmb_info
);
1192 spapr_rtas_register(RTAS_SET_INDICATOR
, "set-indicator",
1193 rtas_set_indicator
);
1194 spapr_rtas_register(RTAS_GET_SENSOR_STATE
, "get-sensor-state",
1195 rtas_get_sensor_state
);
1196 spapr_rtas_register(RTAS_IBM_CONFIGURE_CONNECTOR
, "ibm,configure-connector",
1197 rtas_ibm_configure_connector
);
1199 type_init(spapr_drc_register_types
)