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spapr: Introduce spapr_drc_reset_all()

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No need to expose the way DRCs are traversed outside of spapr_drc.c.

Signed-off-by: Greg Kurz <groug@kaod.org>
Message-Id: <20201218103400.689660-4-groug@kaod.org>
Reviewed-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Tested-by: Daniel Henrique Barboza <danielhb413@gmail.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Greg Kurz 2020-12-18 11:33:57 +01:00 committed by David Gibson
parent 930ef3b5c2
commit babb819f94
3 changed files with 43 additions and 34 deletions
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31
hw/ppc/spapr_drc.c
View file

@ -949,6 +949,37 @@ out:
return ret;
}
void spapr_drc_reset_all(SpaprMachineState *spapr)
{
Object *drc_container;
ObjectProperty *prop;
ObjectPropertyIterator iter;
drc_container = container_get(object_get_root(), DRC_CONTAINER_PATH);
restart:
object_property_iter_init(&iter, drc_container);
while ((prop = object_property_iter_next(&iter))) {
SpaprDrc *drc;
if (!strstart(prop->type, "link<", NULL)) {
continue;
}
drc = SPAPR_DR_CONNECTOR(object_property_get_link(drc_container,
prop->name,
&error_abort));
/*
* This will complete any pending plug/unplug requests.
* In case of a unplugged PHB or PCI bridge, this will
* cause some DRCs to be destroyed and thus potentially
* invalidate the iterator.
*/
if (spapr_drc_reset(drc)) {
goto restart;
}
}
}
/*
* RTAS calls
*/

40
hw/ppc/spapr_hcall.c
View file

@ -1632,39 +1632,6 @@ static uint32_t cas_check_pvr(PowerPCCPU *cpu, uint32_t max_compat,
return best_compat;
}
static void spapr_handle_transient_dev_before_cas(SpaprMachineState *spapr)
{
Object *drc_container;
ObjectProperty *prop;
ObjectPropertyIterator iter;
drc_container = container_get(object_get_root(), "/dr-connector");
restart:
object_property_iter_init(&iter, drc_container);
while ((prop = object_property_iter_next(&iter))) {
SpaprDrc *drc;
if (!strstart(prop->type, "link<", NULL)) {
continue;
}
drc = SPAPR_DR_CONNECTOR(object_property_get_link(drc_container,
prop->name,
&error_abort));
/*
* This will complete any pending plug/unplug requests.
* In case of a unplugged PHB or PCI bridge, this will
* cause some DRCs to be destroyed and thus potentially
* invalidate the iterator.
*/
if (spapr_drc_reset(drc)) {
goto restart;
}
}
spapr_clear_pending_hotplug_events(spapr);
}
target_ulong do_client_architecture_support(PowerPCCPU *cpu,
SpaprMachineState *spapr,
target_ulong vec,
@ -1822,7 +1789,12 @@ target_ulong do_client_architecture_support(PowerPCCPU *cpu,
spapr_irq_update_active_intc(spapr);
spapr_handle_transient_dev_before_cas(spapr);
/*
* Process all pending hot-plug/unplug requests now. An updated full
* rendered FDT will be returned to the guest.
*/
spapr_drc_reset_all(spapr);
spapr_clear_pending_hotplug_events(spapr);
/*
* If spapr_machine_reset() did not set up a HPT but one is necessary

6
include/hw/ppc/spapr_drc.h
View file

@ -245,6 +245,12 @@ int spapr_dt_drc(void *fdt, int offset, Object *owner, uint32_t drc_type_mask);
void spapr_drc_attach(SpaprDrc *drc, DeviceState *d);
void spapr_drc_detach(SpaprDrc *drc);
/*
* Reset all DRCs, causing pending hot-plug/unplug requests to complete.
* Safely handles potential DRC removal (eg. PHBs or PCI bridges).
*/
void spapr_drc_reset_all(struct SpaprMachineState *spapr);
static inline bool spapr_drc_unplug_requested(SpaprDrc *drc)
{
return drc->unplug_requested;