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ppc/xive: introduce the XiveNotifier interface

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The XiveNotifier offers a simple interface, between the XiveSource
object and the main interrupt controller of the machine. It will
forward event notifications to the XIVE Interrupt Virtualization
Routing Engine (IVRE).

Signed-off-by: Cédric Le Goater <clg@kaod.org>
[dwg: Adjust type name string for XiveNotifier]
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2018-12-06 00:22:17 +01:00 committed by David Gibson
parent 5fd9ef18a9
commit 5e79b155a8
2 changed files with 48 additions and 0 deletions
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25
hw/intc/xive.c
View File

@ -156,7 +156,11 @@ static bool xive_source_esb_eoi(XiveSource *xsrc, uint32_t srcno)
*/
static void xive_source_notify(XiveSource *xsrc, int srcno)
{
XiveNotifierClass *xnc = XIVE_NOTIFIER_GET_CLASS(xsrc->xive);
if (xnc->notify) {
xnc->notify(xsrc->xive, srcno);
}
}
/*
@ -363,6 +367,17 @@ static void xive_source_reset(void *dev)
static void xive_source_realize(DeviceState *dev, Error **errp)
{
XiveSource *xsrc = XIVE_SOURCE(dev);
Object *obj;
Error *local_err = NULL;
obj = object_property_get_link(OBJECT(dev), "xive", &local_err);
if (!obj) {
error_propagate(errp, local_err);
error_prepend(errp, "required link 'xive' not found: ");
return;
}
xsrc->xive = XIVE_NOTIFIER(obj);
if (!xsrc->nr_irqs) {
error_setg(errp, "Number of interrupt needs to be greater than 0");
@ -429,9 +444,19 @@ static const TypeInfo xive_source_info = {
.class_init = xive_source_class_init,
};
/*
* XIVE Fabric
*/
static const TypeInfo xive_fabric_info = {
.name = TYPE_XIVE_NOTIFIER,
.parent = TYPE_INTERFACE,
.class_size = sizeof(XiveNotifierClass),
};
static void xive_register_types(void)
{
type_register_static(&xive_source_info);
type_register_static(&xive_fabric_info);
}
type_init(xive_register_types)

23
include/hw/ppc/xive.h
View File

@ -142,6 +142,27 @@
#include "hw/qdev-core.h"
/*
* XIVE Fabric (Interface between Source and Router)
*/
typedef struct XiveNotifier {
Object parent;
} XiveNotifier;
#define TYPE_XIVE_NOTIFIER "xive-notifier"
#define XIVE_NOTIFIER(obj) \
OBJECT_CHECK(XiveNotifier, (obj), TYPE_XIVE_NOTIFIER)
#define XIVE_NOTIFIER_CLASS(klass) \
OBJECT_CLASS_CHECK(XiveNotifierClass, (klass), TYPE_XIVE_NOTIFIER)
#define XIVE_NOTIFIER_GET_CLASS(obj) \
OBJECT_GET_CLASS(XiveNotifierClass, (obj), TYPE_XIVE_NOTIFIER)
typedef struct XiveNotifierClass {
InterfaceClass parent;
void (*notify)(XiveNotifier *xn, uint32_t lisn);
} XiveNotifierClass;
/*
* XIVE Interrupt Source
*/
@ -171,6 +192,8 @@ typedef struct XiveSource {
uint64_t esb_flags;
uint32_t esb_shift;
MemoryRegion esb_mmio;
XiveNotifier *xive;
} XiveSource;
/*