openkylin
/
qemu
mirror of https://gitee.com/openkylin/qemu.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

spapr: Uniform DRC reset paths 

DRC objects have a regular device reset method.  However, it only gets
called in the usual way for PCI DRCs.  Because of where CPU and LMB DRCs
are in the QOM tree, their device reset method isn't automatically called.
So, the machine manually registers reset handlers to call device_reset().

This patch removes the device reset method, and instead always explicitly
registers the reset handler from realize().  This means the callers don't
have to worry about the two cases, and we always get proper resets.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
This commit is contained in:
David Gibson 2017-06-08 22:18:34 +10:00
parent f8dc29834c
commit 6caf3ac613
2 changed files with 7 additions and 30 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
hw/ppc/spapr.c
View File

@ -1967,24 +1967,6 @@ static void spapr_boot_set(void *opaque, const char *boot_device,
machine->boot_order = g_strdup(boot_device);
}
/*
* Reset routine for LMB DR devices.
*
* Unlike PCI DR devices, LMB DR devices explicitly register this reset
* routine. Reset for PCI DR devices will be handled by PHB reset routine
* when it walks all its children devices. LMB devices reset occurs
* as part of ppc_spapr_reset().
*/
static void spapr_drc_reset(void *opaque)
{
sPAPRDRConnector *drc = opaque;
DeviceState *d = DEVICE(drc);
if (d) {
device_reset(d);
}
}
static void spapr_create_lmb_dr_connectors(sPAPRMachineState *spapr)
{
MachineState *machine = MACHINE(spapr);
@ -1993,13 +1975,11 @@ static void spapr_create_lmb_dr_connectors(sPAPRMachineState *spapr)
int i;
for (i = 0; i < nr_lmbs; i++) {
sPAPRDRConnector *drc;
uint64_t addr;
addr = i * lmb_size + spapr->hotplug_memory.base;
drc = spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_LMB,
addr/lmb_size);
qemu_register_reset(spapr_drc_reset, drc);
spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_LMB,
addr / lmb_size);
}
}
@ -2093,11 +2073,8 @@ static void spapr_init_cpus(sPAPRMachineState *spapr)
int core_id = i * smp_threads;
if (mc->has_hotpluggable_cpus) {
sPAPRDRConnector *drc =
spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_CPU,
(core_id / smp_threads) * smt);
qemu_register_reset(spapr_drc_reset, drc);
spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_CPU,
(core_id / smp_threads) * smt);
}
if (i < boot_cores_nr) {

6
hw/ppc/spapr_drc.c
View File

@ -426,9 +426,9 @@ static bool release_pending(sPAPRDRConnector *drc)
return drc->awaiting_release;
}
static void reset(DeviceState *d)
static void drc_reset(void *opaque)
{
sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(d);
sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(opaque);
trace_spapr_drc_reset(spapr_drc_index(drc));
@ -538,6 +538,7 @@ static void realize(DeviceState *d, Error **errp)
g_free(child_name);
vmstate_register(DEVICE(drc), spapr_drc_index(drc), &vmstate_spapr_drc,
drc);
qemu_register_reset(drc_reset, drc);
trace_spapr_drc_realize_complete(spapr_drc_index(drc));
}
@ -596,7 +597,6 @@ static void spapr_dr_connector_class_init(ObjectClass *k, void *data)
DeviceClass *dk = DEVICE_CLASS(k);
sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_CLASS(k);
dk->reset = reset;
dk->realize = realize;
dk->unrealize = unrealize;
drck->release_pending = release_pending;