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"
16 #include "qemu/cutils.h"
17 #include "hw/ppc/spapr_drc.h"
18 #include "qom/object.h"
20 #include "qapi/visitor.h"
21 #include "qemu/error-report.h"
22 #include "hw/ppc/spapr.h" /* for RTAS return codes */
23 #include "hw/pci-host/spapr.h" /* spapr_phb_remove_pci_device_cb callback */
26 #define DRC_CONTAINER_PATH "/dr-connector"
27 #define DRC_INDEX_TYPE_SHIFT 28
28 #define DRC_INDEX_ID_MASK ((1ULL << DRC_INDEX_TYPE_SHIFT) - 1)
30 sPAPRDRConnectorType
spapr_drc_type(sPAPRDRConnector
*drc
)
32 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
34 return 1 << drck
->typeshift
;
37 uint32_t spapr_drc_index(sPAPRDRConnector
*drc
)
39 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
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
45 return (drck
->typeshift
<< DRC_INDEX_TYPE_SHIFT
)
46 | (drc
->id
& DRC_INDEX_ID_MASK
);
49 static uint32_t drc_isolate_physical(sPAPRDRConnector
*drc
)
52 case SPAPR_DRC_STATE_PHYSICAL_POWERON
:
53 return RTAS_OUT_SUCCESS
; /* Nothing to do */
54 case SPAPR_DRC_STATE_PHYSICAL_CONFIGURED
:
55 break; /* see below */
56 case SPAPR_DRC_STATE_PHYSICAL_UNISOLATE
:
57 return RTAS_OUT_PARAM_ERROR
; /* not allowed */
59 g_assert_not_reached();
62 drc
->state
= SPAPR_DRC_STATE_PHYSICAL_POWERON
;
64 if (drc
->unplug_requested
) {
65 uint32_t drc_index
= spapr_drc_index(drc
);
66 trace_spapr_drc_set_isolation_state_finalizing(drc_index
);
67 spapr_drc_detach(drc
);
70 return RTAS_OUT_SUCCESS
;
73 static uint32_t drc_unisolate_physical(sPAPRDRConnector
*drc
)
76 case SPAPR_DRC_STATE_PHYSICAL_UNISOLATE
:
77 case SPAPR_DRC_STATE_PHYSICAL_CONFIGURED
:
78 return RTAS_OUT_SUCCESS
; /* Nothing to do */
79 case SPAPR_DRC_STATE_PHYSICAL_POWERON
:
80 break; /* see below */
82 g_assert_not_reached();
85 /* cannot unisolate a non-existent resource, and, or resources
86 * which are in an 'UNUSABLE' allocation state. (PAPR 2.7,
90 return RTAS_OUT_NO_SUCH_INDICATOR
;
93 drc
->state
= SPAPR_DRC_STATE_PHYSICAL_UNISOLATE
;
94 drc
->ccs_offset
= drc
->fdt_start_offset
;
97 return RTAS_OUT_SUCCESS
;
100 static uint32_t drc_isolate_logical(sPAPRDRConnector
*drc
)
102 switch (drc
->state
) {
103 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
104 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
105 return RTAS_OUT_SUCCESS
; /* Nothing to do */
106 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
107 break; /* see below */
108 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
109 return RTAS_OUT_PARAM_ERROR
; /* not allowed */
111 g_assert_not_reached();
115 * Fail any requests to ISOLATE the LMB DRC if this LMB doesn't
116 * belong to a DIMM device that is marked for removal.
118 * Currently the guest userspace tool drmgr that drives the memory
119 * hotplug/unplug will just try to remove a set of 'removable' LMBs
120 * in response to a hot unplug request that is based on drc-count.
121 * If the LMB being removed doesn't belong to a DIMM device that is
122 * actually being unplugged, fail the isolation request here.
124 if (spapr_drc_type(drc
) == SPAPR_DR_CONNECTOR_TYPE_LMB
125 && !drc
->unplug_requested
) {
126 return RTAS_OUT_HW_ERROR
;
129 drc
->state
= SPAPR_DRC_STATE_LOGICAL_AVAILABLE
;
131 /* if we're awaiting release, but still in an unconfigured state,
132 * it's likely the guest is still in the process of configuring
133 * the device and is transitioning the devices to an ISOLATED
134 * state as a part of that process. so we only complete the
135 * removal when this transition happens for a device in a
136 * configured state, as suggested by the state diagram from PAPR+
139 if (drc
->unplug_requested
) {
140 uint32_t drc_index
= spapr_drc_index(drc
);
141 trace_spapr_drc_set_isolation_state_finalizing(drc_index
);
142 spapr_drc_detach(drc
);
144 return RTAS_OUT_SUCCESS
;
147 static uint32_t drc_unisolate_logical(sPAPRDRConnector
*drc
)
149 switch (drc
->state
) {
150 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
151 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
152 return RTAS_OUT_SUCCESS
; /* Nothing to do */
153 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
154 break; /* see below */
155 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
156 return RTAS_OUT_NO_SUCH_INDICATOR
; /* not allowed */
158 g_assert_not_reached();
161 /* Move to AVAILABLE state should have ensured device was present */
164 drc
->state
= SPAPR_DRC_STATE_LOGICAL_UNISOLATE
;
165 drc
->ccs_offset
= drc
->fdt_start_offset
;
168 return RTAS_OUT_SUCCESS
;
171 static uint32_t drc_set_usable(sPAPRDRConnector
*drc
)
173 switch (drc
->state
) {
174 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
175 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
176 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
177 return RTAS_OUT_SUCCESS
; /* Nothing to do */
178 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
179 break; /* see below */
181 g_assert_not_reached();
184 /* if there's no resource/device associated with the DRC, there's
185 * no way for us to put it in an allocation state consistent with
186 * being 'USABLE'. PAPR 2.7, 13.5.3.4 documents that this should
187 * result in an RTAS return code of -3 / "no such indicator"
190 return RTAS_OUT_NO_SUCH_INDICATOR
;
192 if (drc
->unplug_requested
) {
193 /* Don't allow the guest to move a device away from UNUSABLE
194 * state when we want to unplug it */
195 return RTAS_OUT_NO_SUCH_INDICATOR
;
198 drc
->state
= SPAPR_DRC_STATE_LOGICAL_AVAILABLE
;
200 return RTAS_OUT_SUCCESS
;
203 static uint32_t drc_set_unusable(sPAPRDRConnector
*drc
)
205 switch (drc
->state
) {
206 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
207 return RTAS_OUT_SUCCESS
; /* Nothing to do */
208 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
209 break; /* see below */
210 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
211 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
212 return RTAS_OUT_NO_SUCH_INDICATOR
; /* not allowed */
214 g_assert_not_reached();
217 drc
->state
= SPAPR_DRC_STATE_LOGICAL_UNUSABLE
;
218 if (drc
->unplug_requested
) {
219 uint32_t drc_index
= spapr_drc_index(drc
);
220 trace_spapr_drc_set_allocation_state_finalizing(drc_index
);
221 spapr_drc_detach(drc
);
224 return RTAS_OUT_SUCCESS
;
227 static const char *spapr_drc_name(sPAPRDRConnector
*drc
)
229 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
231 /* human-readable name for a DRC to encode into the DT
232 * description. this is mainly only used within a guest in place
233 * of the unique DRC index.
235 * in the case of VIO/PCI devices, it corresponds to a "location
236 * code" that maps a logical device/function (DRC index) to a
237 * physical (or virtual in the case of VIO) location in the system
238 * by chaining together the "location label" for each
239 * encapsulating component.
241 * since this is more to do with diagnosing physical hardware
242 * issues than guest compatibility, we choose location codes/DRC
243 * names that adhere to the documented format, but avoid encoding
244 * the entire topology information into the label/code, instead
245 * just using the location codes based on the labels for the
246 * endpoints (VIO/PCI adaptor connectors), which is basically just
247 * "C" followed by an integer ID.
249 * DRC names as documented by PAPR+ v2.7, 13.5.2.4
250 * location codes as documented by PAPR+ v2.7, 12.3.1.5
252 return g_strdup_printf("%s%d", drck
->drc_name_prefix
, drc
->id
);
256 * dr-entity-sense sensor value
257 * returned via get-sensor-state RTAS calls
258 * as expected by state diagram in PAPR+ 2.7, 13.4
259 * based on the current allocation/indicator/power states
260 * for the DR connector.
262 static sPAPRDREntitySense
physical_entity_sense(sPAPRDRConnector
*drc
)
264 /* this assumes all PCI devices are assigned to a 'live insertion'
265 * power domain, where QEMU manages power state automatically as
266 * opposed to the guest. present, non-PCI resources are unaffected
269 return drc
->dev
? SPAPR_DR_ENTITY_SENSE_PRESENT
270 : SPAPR_DR_ENTITY_SENSE_EMPTY
;
273 static sPAPRDREntitySense
logical_entity_sense(sPAPRDRConnector
*drc
)
275 switch (drc
->state
) {
276 case SPAPR_DRC_STATE_LOGICAL_UNUSABLE
:
277 return SPAPR_DR_ENTITY_SENSE_UNUSABLE
;
278 case SPAPR_DRC_STATE_LOGICAL_AVAILABLE
:
279 case SPAPR_DRC_STATE_LOGICAL_UNISOLATE
:
280 case SPAPR_DRC_STATE_LOGICAL_CONFIGURED
:
282 return SPAPR_DR_ENTITY_SENSE_PRESENT
;
284 g_assert_not_reached();
288 static void prop_get_index(Object
*obj
, Visitor
*v
, const char *name
,
289 void *opaque
, Error
**errp
)
291 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(obj
);
292 uint32_t value
= spapr_drc_index(drc
);
293 visit_type_uint32(v
, name
, &value
, errp
);
296 static void prop_get_fdt(Object
*obj
, Visitor
*v
, const char *name
,
297 void *opaque
, Error
**errp
)
299 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(obj
);
301 int fdt_offset_next
, fdt_offset
, fdt_depth
;
305 visit_type_null(v
, NULL
, errp
);
310 fdt_offset
= drc
->fdt_start_offset
;
314 const char *name
= NULL
;
315 const struct fdt_property
*prop
= NULL
;
316 int prop_len
= 0, name_len
= 0;
319 tag
= fdt_next_tag(fdt
, fdt_offset
, &fdt_offset_next
);
323 name
= fdt_get_name(fdt
, fdt_offset
, &name_len
);
324 visit_start_struct(v
, name
, NULL
, 0, &err
);
326 error_propagate(errp
, err
);
331 /* shouldn't ever see an FDT_END_NODE before FDT_BEGIN_NODE */
332 g_assert(fdt_depth
> 0);
333 visit_check_struct(v
, &err
);
334 visit_end_struct(v
, NULL
);
336 error_propagate(errp
, err
);
343 prop
= fdt_get_property_by_offset(fdt
, fdt_offset
, &prop_len
);
344 name
= fdt_string(fdt
, fdt32_to_cpu(prop
->nameoff
));
345 visit_start_list(v
, name
, NULL
, 0, &err
);
347 error_propagate(errp
, err
);
350 for (i
= 0; i
< prop_len
; i
++) {
351 visit_type_uint8(v
, NULL
, (uint8_t *)&prop
->data
[i
], &err
);
353 error_propagate(errp
, err
);
357 visit_check_list(v
, &err
);
358 visit_end_list(v
, NULL
);
360 error_propagate(errp
, err
);
366 error_setg(&error_abort
, "device FDT in unexpected state: %d", tag
);
368 fdt_offset
= fdt_offset_next
;
369 } while (fdt_depth
!= 0);
372 void spapr_drc_attach(sPAPRDRConnector
*drc
, DeviceState
*d
, void *fdt
,
373 int fdt_start_offset
, Error
**errp
)
375 trace_spapr_drc_attach(spapr_drc_index(drc
));
378 error_setg(errp
, "an attached device is still awaiting release");
381 g_assert((drc
->state
== SPAPR_DRC_STATE_LOGICAL_UNUSABLE
)
382 || (drc
->state
== SPAPR_DRC_STATE_PHYSICAL_POWERON
));
387 drc
->fdt_start_offset
= fdt_start_offset
;
389 object_property_add_link(OBJECT(drc
), "device",
390 object_get_typename(OBJECT(drc
->dev
)),
391 (Object
**)(&drc
->dev
),
395 static void spapr_drc_release(sPAPRDRConnector
*drc
)
397 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
399 drck
->release(drc
->dev
);
401 drc
->unplug_requested
= false;
404 drc
->fdt_start_offset
= 0;
405 object_property_del(OBJECT(drc
), "device", &error_abort
);
409 void spapr_drc_detach(sPAPRDRConnector
*drc
)
411 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
413 trace_spapr_drc_detach(spapr_drc_index(drc
));
417 drc
->unplug_requested
= true;
419 if (drc
->state
!= drck
->empty_state
) {
420 trace_spapr_drc_awaiting_quiesce(spapr_drc_index(drc
));
424 spapr_drc_release(drc
);
427 void spapr_drc_reset(sPAPRDRConnector
*drc
)
429 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
431 trace_spapr_drc_reset(spapr_drc_index(drc
));
433 /* immediately upon reset we can safely assume DRCs whose devices
434 * are pending removal can be safely removed.
436 if (drc
->unplug_requested
) {
437 spapr_drc_release(drc
);
441 /* A device present at reset is ready to go, same as coldplugged */
442 drc
->state
= drck
->ready_state
;
444 drc
->state
= drck
->empty_state
;
447 drc
->ccs_offset
= -1;
451 static void drc_reset(void *opaque
)
453 spapr_drc_reset(SPAPR_DR_CONNECTOR(opaque
));
456 static bool spapr_drc_needed(void *opaque
)
458 sPAPRDRConnector
*drc
= (sPAPRDRConnector
*)opaque
;
459 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
460 sPAPRDREntitySense value
= drck
->dr_entity_sense(drc
);
462 /* If no dev is plugged in there is no need to migrate the DRC state */
463 if (value
!= SPAPR_DR_ENTITY_SENSE_PRESENT
) {
468 * We need to migrate the state if it's not equal to the expected
469 * long-term state, which is the same as the coldplugged initial
471 return (drc
->state
!= drck
->ready_state
);
474 static const VMStateDescription vmstate_spapr_drc
= {
477 .minimum_version_id
= 1,
478 .needed
= spapr_drc_needed
,
479 .fields
= (VMStateField
[]) {
480 VMSTATE_UINT32(state
, sPAPRDRConnector
),
481 VMSTATE_END_OF_LIST()
485 static void realize(DeviceState
*d
, Error
**errp
)
487 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(d
);
488 Object
*root_container
;
493 trace_spapr_drc_realize(spapr_drc_index(drc
));
494 /* NOTE: we do this as part of realize/unrealize due to the fact
495 * that the guest will communicate with the DRC via RTAS calls
496 * referencing the global DRC index. By unlinking the DRC
497 * from DRC_CONTAINER_PATH/<drc_index> we effectively make it
498 * inaccessible by the guest, since lookups rely on this path
499 * existing in the composition tree
501 root_container
= container_get(object_get_root(), DRC_CONTAINER_PATH
);
502 snprintf(link_name
, sizeof(link_name
), "%x", spapr_drc_index(drc
));
503 child_name
= object_get_canonical_path_component(OBJECT(drc
));
504 trace_spapr_drc_realize_child(spapr_drc_index(drc
), child_name
);
505 object_property_add_alias(root_container
, link_name
,
506 drc
->owner
, child_name
, &err
);
508 error_report_err(err
);
509 object_unref(OBJECT(drc
));
512 vmstate_register(DEVICE(drc
), spapr_drc_index(drc
), &vmstate_spapr_drc
,
514 qemu_register_reset(drc_reset
, drc
);
515 trace_spapr_drc_realize_complete(spapr_drc_index(drc
));
518 static void unrealize(DeviceState
*d
, Error
**errp
)
520 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(d
);
521 Object
*root_container
;
525 trace_spapr_drc_unrealize(spapr_drc_index(drc
));
526 root_container
= container_get(object_get_root(), DRC_CONTAINER_PATH
);
527 snprintf(name
, sizeof(name
), "%x", spapr_drc_index(drc
));
528 object_property_del(root_container
, name
, &err
);
530 error_report_err(err
);
531 object_unref(OBJECT(drc
));
535 sPAPRDRConnector
*spapr_dr_connector_new(Object
*owner
, const char *type
,
538 sPAPRDRConnector
*drc
= SPAPR_DR_CONNECTOR(object_new(type
));
543 prop_name
= g_strdup_printf("dr-connector[%"PRIu32
"]",
544 spapr_drc_index(drc
));
545 object_property_add_child(owner
, prop_name
, OBJECT(drc
), NULL
);
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 spapr_drc_physical_class_init(ObjectClass
*k
, void *data
)
630 DeviceClass
*dk
= DEVICE_CLASS(k
);
631 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
633 dk
->realize
= realize_physical
;
634 drck
->dr_entity_sense
= physical_entity_sense
;
635 drck
->isolate
= drc_isolate_physical
;
636 drck
->unisolate
= drc_unisolate_physical
;
637 drck
->ready_state
= SPAPR_DRC_STATE_PHYSICAL_CONFIGURED
;
638 drck
->empty_state
= SPAPR_DRC_STATE_PHYSICAL_POWERON
;
641 static void spapr_drc_logical_class_init(ObjectClass
*k
, void *data
)
643 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
645 drck
->dr_entity_sense
= logical_entity_sense
;
646 drck
->isolate
= drc_isolate_logical
;
647 drck
->unisolate
= drc_unisolate_logical
;
648 drck
->ready_state
= SPAPR_DRC_STATE_LOGICAL_CONFIGURED
;
649 drck
->empty_state
= SPAPR_DRC_STATE_LOGICAL_UNUSABLE
;
652 static void spapr_drc_cpu_class_init(ObjectClass
*k
, void *data
)
654 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
656 drck
->typeshift
= SPAPR_DR_CONNECTOR_TYPE_SHIFT_CPU
;
657 drck
->typename
= "CPU";
658 drck
->drc_name_prefix
= "CPU ";
659 drck
->release
= spapr_core_release
;
662 static void spapr_drc_pci_class_init(ObjectClass
*k
, void *data
)
664 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
666 drck
->typeshift
= SPAPR_DR_CONNECTOR_TYPE_SHIFT_PCI
;
667 drck
->typename
= "28";
668 drck
->drc_name_prefix
= "C";
669 drck
->release
= spapr_phb_remove_pci_device_cb
;
672 static void spapr_drc_lmb_class_init(ObjectClass
*k
, void *data
)
674 sPAPRDRConnectorClass
*drck
= SPAPR_DR_CONNECTOR_CLASS(k
);
676 drck
->typeshift
= SPAPR_DR_CONNECTOR_TYPE_SHIFT_LMB
;
677 drck
->typename
= "MEM";
678 drck
->drc_name_prefix
= "LMB ";
679 drck
->release
= spapr_lmb_release
;
682 static const TypeInfo spapr_dr_connector_info
= {
683 .name
= TYPE_SPAPR_DR_CONNECTOR
,
684 .parent
= TYPE_DEVICE
,
685 .instance_size
= sizeof(sPAPRDRConnector
),
686 .instance_init
= spapr_dr_connector_instance_init
,
687 .class_size
= sizeof(sPAPRDRConnectorClass
),
688 .class_init
= spapr_dr_connector_class_init
,
692 static const TypeInfo spapr_drc_physical_info
= {
693 .name
= TYPE_SPAPR_DRC_PHYSICAL
,
694 .parent
= TYPE_SPAPR_DR_CONNECTOR
,
695 .instance_size
= sizeof(sPAPRDRCPhysical
),
696 .class_init
= spapr_drc_physical_class_init
,
700 static const TypeInfo spapr_drc_logical_info
= {
701 .name
= TYPE_SPAPR_DRC_LOGICAL
,
702 .parent
= TYPE_SPAPR_DR_CONNECTOR
,
703 .class_init
= spapr_drc_logical_class_init
,
707 static const TypeInfo spapr_drc_cpu_info
= {
708 .name
= TYPE_SPAPR_DRC_CPU
,
709 .parent
= TYPE_SPAPR_DRC_LOGICAL
,
710 .class_init
= spapr_drc_cpu_class_init
,
713 static const TypeInfo spapr_drc_pci_info
= {
714 .name
= TYPE_SPAPR_DRC_PCI
,
715 .parent
= TYPE_SPAPR_DRC_PHYSICAL
,
716 .class_init
= spapr_drc_pci_class_init
,
719 static const TypeInfo spapr_drc_lmb_info
= {
720 .name
= TYPE_SPAPR_DRC_LMB
,
721 .parent
= TYPE_SPAPR_DRC_LOGICAL
,
722 .class_init
= spapr_drc_lmb_class_init
,
725 /* helper functions for external users */
727 sPAPRDRConnector
*spapr_drc_by_index(uint32_t index
)
732 snprintf(name
, sizeof(name
), "%s/%x", DRC_CONTAINER_PATH
, index
);
733 obj
= object_resolve_path(name
, NULL
);
735 return !obj
? NULL
: SPAPR_DR_CONNECTOR(obj
);
738 sPAPRDRConnector
*spapr_drc_by_id(const char *type
, uint32_t id
)
740 sPAPRDRConnectorClass
*drck
741 = SPAPR_DR_CONNECTOR_CLASS(object_class_by_name(type
));
743 return spapr_drc_by_index(drck
->typeshift
<< DRC_INDEX_TYPE_SHIFT
744 | (id
& DRC_INDEX_ID_MASK
));
748 * spapr_drc_populate_dt
750 * @fdt: libfdt device tree
751 * @path: path in the DT to generate properties
752 * @owner: parent Object/DeviceState for which to generate DRC
754 * @drc_type_mask: mask of sPAPRDRConnectorType values corresponding
755 * to the types of DRCs to generate entries for
757 * generate OF properties to describe DRC topology/indices to guests
759 * as documented in PAPR+ v2.1, 13.5.2
761 int spapr_drc_populate_dt(void *fdt
, int fdt_offset
, Object
*owner
,
762 uint32_t drc_type_mask
)
764 Object
*root_container
;
765 ObjectProperty
*prop
;
766 ObjectPropertyIterator iter
;
767 uint32_t drc_count
= 0;
768 GArray
*drc_indexes
, *drc_power_domains
;
769 GString
*drc_names
, *drc_types
;
772 /* the first entry of each properties is a 32-bit integer encoding
773 * the number of elements in the array. we won't know this until
774 * we complete the iteration through all the matching DRCs, but
775 * reserve the space now and set the offsets accordingly so we
776 * can fill them in later.
778 drc_indexes
= g_array_new(false, true, sizeof(uint32_t));
779 drc_indexes
= g_array_set_size(drc_indexes
, 1);
780 drc_power_domains
= g_array_new(false, true, sizeof(uint32_t));
781 drc_power_domains
= g_array_set_size(drc_power_domains
, 1);
782 drc_names
= g_string_set_size(g_string_new(NULL
), sizeof(uint32_t));
783 drc_types
= g_string_set_size(g_string_new(NULL
), sizeof(uint32_t));
785 /* aliases for all DRConnector objects will be rooted in QOM
786 * composition tree at DRC_CONTAINER_PATH
788 root_container
= container_get(object_get_root(), DRC_CONTAINER_PATH
);
790 object_property_iter_init(&iter
, root_container
);
791 while ((prop
= object_property_iter_next(&iter
))) {
793 sPAPRDRConnector
*drc
;
794 sPAPRDRConnectorClass
*drck
;
795 uint32_t drc_index
, drc_power_domain
;
797 if (!strstart(prop
->type
, "link<", NULL
)) {
801 obj
= object_property_get_link(root_container
, prop
->name
, NULL
);
802 drc
= SPAPR_DR_CONNECTOR(obj
);
803 drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
805 if (owner
&& (drc
->owner
!= owner
)) {
809 if ((spapr_drc_type(drc
) & drc_type_mask
) == 0) {
815 /* ibm,drc-indexes */
816 drc_index
= cpu_to_be32(spapr_drc_index(drc
));
817 g_array_append_val(drc_indexes
, drc_index
);
819 /* ibm,drc-power-domains */
820 drc_power_domain
= cpu_to_be32(-1);
821 g_array_append_val(drc_power_domains
, drc_power_domain
);
824 drc_names
= g_string_append(drc_names
, spapr_drc_name(drc
));
825 drc_names
= g_string_insert_len(drc_names
, -1, "\0", 1);
828 drc_types
= g_string_append(drc_types
, drck
->typename
);
829 drc_types
= g_string_insert_len(drc_types
, -1, "\0", 1);
832 /* now write the drc count into the space we reserved at the
833 * beginning of the arrays previously
835 *(uint32_t *)drc_indexes
->data
= cpu_to_be32(drc_count
);
836 *(uint32_t *)drc_power_domains
->data
= cpu_to_be32(drc_count
);
837 *(uint32_t *)drc_names
->str
= cpu_to_be32(drc_count
);
838 *(uint32_t *)drc_types
->str
= cpu_to_be32(drc_count
);
840 ret
= fdt_setprop(fdt
, fdt_offset
, "ibm,drc-indexes",
842 drc_indexes
->len
* sizeof(uint32_t));
844 error_report("Couldn't create ibm,drc-indexes property");
848 ret
= fdt_setprop(fdt
, fdt_offset
, "ibm,drc-power-domains",
849 drc_power_domains
->data
,
850 drc_power_domains
->len
* sizeof(uint32_t));
852 error_report("Couldn't finalize ibm,drc-power-domains property");
856 ret
= fdt_setprop(fdt
, fdt_offset
, "ibm,drc-names",
857 drc_names
->str
, drc_names
->len
);
859 error_report("Couldn't finalize ibm,drc-names property");
863 ret
= fdt_setprop(fdt
, fdt_offset
, "ibm,drc-types",
864 drc_types
->str
, drc_types
->len
);
866 error_report("Couldn't finalize ibm,drc-types property");
871 g_array_free(drc_indexes
, true);
872 g_array_free(drc_power_domains
, true);
873 g_string_free(drc_names
, true);
874 g_string_free(drc_types
, true);
883 static uint32_t rtas_set_isolation_state(uint32_t idx
, uint32_t state
)
885 sPAPRDRConnector
*drc
= spapr_drc_by_index(idx
);
886 sPAPRDRConnectorClass
*drck
;
889 return RTAS_OUT_NO_SUCH_INDICATOR
;
892 trace_spapr_drc_set_isolation_state(spapr_drc_index(drc
), state
);
894 drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
897 case SPAPR_DR_ISOLATION_STATE_ISOLATED
:
898 return drck
->isolate(drc
);
900 case SPAPR_DR_ISOLATION_STATE_UNISOLATED
:
901 return drck
->unisolate(drc
);
904 return RTAS_OUT_PARAM_ERROR
;
908 static uint32_t rtas_set_allocation_state(uint32_t idx
, uint32_t state
)
910 sPAPRDRConnector
*drc
= spapr_drc_by_index(idx
);
912 if (!drc
|| !object_dynamic_cast(OBJECT(drc
), TYPE_SPAPR_DRC_LOGICAL
)) {
913 return RTAS_OUT_NO_SUCH_INDICATOR
;
916 trace_spapr_drc_set_allocation_state(spapr_drc_index(drc
), state
);
919 case SPAPR_DR_ALLOCATION_STATE_USABLE
:
920 return drc_set_usable(drc
);
922 case SPAPR_DR_ALLOCATION_STATE_UNUSABLE
:
923 return drc_set_unusable(drc
);
926 return RTAS_OUT_PARAM_ERROR
;
930 static uint32_t rtas_set_dr_indicator(uint32_t idx
, uint32_t state
)
932 sPAPRDRConnector
*drc
= spapr_drc_by_index(idx
);
934 if (!drc
|| !object_dynamic_cast(OBJECT(drc
), TYPE_SPAPR_DRC_PHYSICAL
)) {
935 return RTAS_OUT_NO_SUCH_INDICATOR
;
937 if ((state
!= SPAPR_DR_INDICATOR_INACTIVE
)
938 && (state
!= SPAPR_DR_INDICATOR_ACTIVE
)
939 && (state
!= SPAPR_DR_INDICATOR_IDENTIFY
)
940 && (state
!= SPAPR_DR_INDICATOR_ACTION
)) {
941 return RTAS_OUT_PARAM_ERROR
; /* bad state parameter */
944 trace_spapr_drc_set_dr_indicator(idx
, state
);
945 SPAPR_DRC_PHYSICAL(drc
)->dr_indicator
= state
;
946 return RTAS_OUT_SUCCESS
;
949 static void rtas_set_indicator(PowerPCCPU
*cpu
, sPAPRMachineState
*spapr
,
951 uint32_t nargs
, target_ulong args
,
952 uint32_t nret
, target_ulong rets
)
954 uint32_t type
, idx
, state
;
955 uint32_t ret
= RTAS_OUT_SUCCESS
;
957 if (nargs
!= 3 || nret
!= 1) {
958 ret
= RTAS_OUT_PARAM_ERROR
;
962 type
= rtas_ld(args
, 0);
963 idx
= rtas_ld(args
, 1);
964 state
= rtas_ld(args
, 2);
967 case RTAS_SENSOR_TYPE_ISOLATION_STATE
:
968 ret
= rtas_set_isolation_state(idx
, state
);
970 case RTAS_SENSOR_TYPE_DR
:
971 ret
= rtas_set_dr_indicator(idx
, state
);
973 case RTAS_SENSOR_TYPE_ALLOCATION_STATE
:
974 ret
= rtas_set_allocation_state(idx
, state
);
977 ret
= RTAS_OUT_NOT_SUPPORTED
;
981 rtas_st(rets
, 0, ret
);
984 static void rtas_get_sensor_state(PowerPCCPU
*cpu
, sPAPRMachineState
*spapr
,
985 uint32_t token
, uint32_t nargs
,
986 target_ulong args
, uint32_t nret
,
989 uint32_t sensor_type
;
990 uint32_t sensor_index
;
991 uint32_t sensor_state
= 0;
992 sPAPRDRConnector
*drc
;
993 sPAPRDRConnectorClass
*drck
;
994 uint32_t ret
= RTAS_OUT_SUCCESS
;
996 if (nargs
!= 2 || nret
!= 2) {
997 ret
= RTAS_OUT_PARAM_ERROR
;
1001 sensor_type
= rtas_ld(args
, 0);
1002 sensor_index
= rtas_ld(args
, 1);
1004 if (sensor_type
!= RTAS_SENSOR_TYPE_ENTITY_SENSE
) {
1005 /* currently only DR-related sensors are implemented */
1006 trace_spapr_rtas_get_sensor_state_not_supported(sensor_index
,
1008 ret
= RTAS_OUT_NOT_SUPPORTED
;
1012 drc
= spapr_drc_by_index(sensor_index
);
1014 trace_spapr_rtas_get_sensor_state_invalid(sensor_index
);
1015 ret
= RTAS_OUT_PARAM_ERROR
;
1018 drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
1019 sensor_state
= drck
->dr_entity_sense(drc
);
1022 rtas_st(rets
, 0, ret
);
1023 rtas_st(rets
, 1, sensor_state
);
1026 /* configure-connector work area offsets, int32_t units for field
1027 * indexes, bytes for field offset/len values.
1029 * as documented by PAPR+ v2.7, 13.5.3.5
1031 #define CC_IDX_NODE_NAME_OFFSET 2
1032 #define CC_IDX_PROP_NAME_OFFSET 2
1033 #define CC_IDX_PROP_LEN 3
1034 #define CC_IDX_PROP_DATA_OFFSET 4
1035 #define CC_VAL_DATA_OFFSET ((CC_IDX_PROP_DATA_OFFSET + 1) * 4)
1036 #define CC_WA_LEN 4096
1038 static void configure_connector_st(target_ulong addr
, target_ulong offset
,
1039 const void *buf
, size_t len
)
1041 cpu_physical_memory_write(ppc64_phys_to_real(addr
+ offset
),
1042 buf
, MIN(len
, CC_WA_LEN
- offset
));
1045 static void rtas_ibm_configure_connector(PowerPCCPU
*cpu
,
1046 sPAPRMachineState
*spapr
,
1047 uint32_t token
, uint32_t nargs
,
1048 target_ulong args
, uint32_t nret
,
1054 sPAPRDRConnector
*drc
;
1055 sPAPRDRConnectorClass
*drck
;
1056 sPAPRDRCCResponse resp
= SPAPR_DR_CC_RESPONSE_CONTINUE
;
1059 if (nargs
!= 2 || nret
!= 1) {
1060 rtas_st(rets
, 0, RTAS_OUT_PARAM_ERROR
);
1064 wa_addr
= ((uint64_t)rtas_ld(args
, 1) << 32) | rtas_ld(args
, 0);
1066 drc_index
= rtas_ld(wa_addr
, 0);
1067 drc
= spapr_drc_by_index(drc_index
);
1069 trace_spapr_rtas_ibm_configure_connector_invalid(drc_index
);
1070 rc
= RTAS_OUT_PARAM_ERROR
;
1074 if ((drc
->state
!= SPAPR_DRC_STATE_LOGICAL_UNISOLATE
)
1075 && (drc
->state
!= SPAPR_DRC_STATE_PHYSICAL_UNISOLATE
)) {
1076 /* Need to unisolate the device before configuring */
1077 rc
= SPAPR_DR_CC_RESPONSE_NOT_CONFIGURABLE
;
1083 drck
= SPAPR_DR_CONNECTOR_GET_CLASS(drc
);
1088 const struct fdt_property
*prop
;
1089 int fdt_offset_next
, prop_len
;
1091 tag
= fdt_next_tag(drc
->fdt
, drc
->ccs_offset
, &fdt_offset_next
);
1094 case FDT_BEGIN_NODE
:
1096 name
= fdt_get_name(drc
->fdt
, drc
->ccs_offset
, NULL
);
1098 /* provide the name of the next OF node */
1099 wa_offset
= CC_VAL_DATA_OFFSET
;
1100 rtas_st(wa_addr
, CC_IDX_NODE_NAME_OFFSET
, wa_offset
);
1101 configure_connector_st(wa_addr
, wa_offset
, name
, strlen(name
) + 1);
1102 resp
= SPAPR_DR_CC_RESPONSE_NEXT_CHILD
;
1106 if (drc
->ccs_depth
== 0) {
1107 uint32_t drc_index
= spapr_drc_index(drc
);
1109 /* done sending the device tree, move to configured state */
1110 trace_spapr_drc_set_configured(drc_index
);
1111 drc
->state
= drck
->ready_state
;
1112 drc
->ccs_offset
= -1;
1113 drc
->ccs_depth
= -1;
1114 resp
= SPAPR_DR_CC_RESPONSE_SUCCESS
;
1116 resp
= SPAPR_DR_CC_RESPONSE_PREV_PARENT
;
1120 prop
= fdt_get_property_by_offset(drc
->fdt
, drc
->ccs_offset
,
1122 name
= fdt_string(drc
->fdt
, fdt32_to_cpu(prop
->nameoff
));
1124 /* provide the name of the next OF property */
1125 wa_offset
= CC_VAL_DATA_OFFSET
;
1126 rtas_st(wa_addr
, CC_IDX_PROP_NAME_OFFSET
, wa_offset
);
1127 configure_connector_st(wa_addr
, wa_offset
, name
, strlen(name
) + 1);
1129 /* provide the length and value of the OF property. data gets
1130 * placed immediately after NULL terminator of the OF property's
1133 wa_offset
+= strlen(name
) + 1,
1134 rtas_st(wa_addr
, CC_IDX_PROP_LEN
, prop_len
);
1135 rtas_st(wa_addr
, CC_IDX_PROP_DATA_OFFSET
, wa_offset
);
1136 configure_connector_st(wa_addr
, wa_offset
, prop
->data
, prop_len
);
1137 resp
= SPAPR_DR_CC_RESPONSE_NEXT_PROPERTY
;
1140 resp
= SPAPR_DR_CC_RESPONSE_ERROR
;
1142 /* keep seeking for an actionable tag */
1145 if (drc
->ccs_offset
>= 0) {
1146 drc
->ccs_offset
= fdt_offset_next
;
1148 } while (resp
== SPAPR_DR_CC_RESPONSE_CONTINUE
);
1152 rtas_st(rets
, 0, rc
);
1155 static void spapr_drc_register_types(void)
1157 type_register_static(&spapr_dr_connector_info
);
1158 type_register_static(&spapr_drc_physical_info
);
1159 type_register_static(&spapr_drc_logical_info
);
1160 type_register_static(&spapr_drc_cpu_info
);
1161 type_register_static(&spapr_drc_pci_info
);
1162 type_register_static(&spapr_drc_lmb_info
);
1164 spapr_rtas_register(RTAS_SET_INDICATOR
, "set-indicator",
1165 rtas_set_indicator
);
1166 spapr_rtas_register(RTAS_GET_SENSOR_STATE
, "get-sensor-state",
1167 rtas_get_sensor_state
);
1168 spapr_rtas_register(RTAS_IBM_CONFIGURE_CONNECTOR
, "ibm,configure-connector",
1169 rtas_ibm_configure_connector
);
1171 type_init(spapr_drc_register_types
)