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ppc/pnv: create the ICP object under PnvCore 

Each thread of a core is linked to an ICP. This allocates a PnvICPState
object before the PowerPCCPU object is realized and lets the XICSFabric
do the store under the 'intc' backlink when xics_cpu_setup() is
called.

This modeling removes the need of maintaining an array of ICP objects
under the PowerNV machine and also simplifies the XICSFabric icp_get()
handler.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2017-04-03 09:46:03 +02:00 committed by David Gibson
parent 47fea43aa3
commit 960fbd29e5
2 changed files with 27 additions and 2 deletions
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2
hw/ppc/pnv.c
View File

@ -694,6 +694,8 @@ static void pnv_chip_realize(DeviceState *dev, Error **errp)
object_property_set_int(OBJECT(pnv_core),
pcc->core_pir(chip, core_hwid),
"pir", &error_fatal);
object_property_add_const_link(OBJECT(pnv_core), "xics",
qdev_get_machine(), &error_fatal);
object_property_set_bool(OBJECT(pnv_core), true, "realized",
&error_fatal);
object_unref(OBJECT(pnv_core));

27
hw/ppc/pnv_core.c
View File

@ -25,6 +25,7 @@
#include "hw/ppc/pnv.h"
#include "hw/ppc/pnv_core.h"
#include "hw/ppc/pnv_xscom.h"
#include "hw/ppc/xics.h"
static void powernv_cpu_reset(void *opaque)
{
@ -110,23 +111,37 @@ static const MemoryRegionOps pnv_core_xscom_ops = {
.endianness = DEVICE_BIG_ENDIAN,
};
static void pnv_core_realize_child(Object *child, Error **errp)
static void pnv_core_realize_child(Object *child, XICSFabric *xi, Error **errp)
{
Error *local_err = NULL;
CPUState *cs = CPU(child);
PowerPCCPU *cpu = POWERPC_CPU(cs);
Object *obj;
obj = object_new(TYPE_PNV_ICP);
object_property_add_child(OBJECT(cpu), "icp", obj, NULL);
object_property_add_const_link(obj, "xics", OBJECT(xi), &error_abort);
object_property_set_bool(obj, true, "realized", &local_err);
if (local_err) {
error_propagate(errp, local_err);
return;
}
object_property_set_bool(child, true, "realized", &local_err);
if (local_err) {
object_unparent(obj);
error_propagate(errp, local_err);
return;
}
powernv_cpu_init(cpu, &local_err);
if (local_err) {
object_unparent(obj);
error_propagate(errp, local_err);
return;
}
xics_cpu_setup(xi, cpu, ICP(obj));
}
static void pnv_core_realize(DeviceState *dev, Error **errp)
@ -140,6 +155,14 @@ static void pnv_core_realize(DeviceState *dev, Error **errp)
void *obj;
int i, j;
char name[32];
Object *xi;
xi = object_property_get_link(OBJECT(dev), "xics", &local_err);
if (!xi) {
error_setg(errp, "%s: required link 'xics' not found: %s",
__func__, error_get_pretty(local_err));
return;
}
pc->threads = g_malloc0(size * cc->nr_threads);
for (i = 0; i < cc->nr_threads; i++) {
@ -160,7 +183,7 @@ static void pnv_core_realize(DeviceState *dev, Error **errp)
for (j = 0; j < cc->nr_threads; j++) {
obj = pc->threads + j * size;
pnv_core_realize_child(obj, &local_err);
pnv_core_realize_child(obj, XICS_FABRIC(xi), &local_err);
if (local_err) {
goto err;
}