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ppc/xive: Introduce a XiveFabric interface 

The XiveFabric QOM interface acts as the PowerBUS interface between
the interrupt controller and the system and should be implemented by
the QEMU machine. On HW, the XIVE sub-engine is responsible for the
communication with the other chip is the Common Queue (CQ) bridge
unit.

This interface offers a 'match_nvt' handler to perform the CAM line
matching when looking for a XIVE Presenter with a dispatched NVT.

Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191125065820.927-9-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2019-11-25 07:58:08 +01:00 committed by David Gibson
parent 119eaa9d11
commit d3eb47a2a1
2 changed files with 32 additions and 0 deletions
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10
hw/intc/xive.c
View File

@ -1893,8 +1893,18 @@ static const TypeInfo xive_presenter_info = {
.class_size = sizeof(XivePresenterClass),
};
/*
* XIVE Fabric
*/
static const TypeInfo xive_fabric_info = {
.name = TYPE_XIVE_FABRIC,
.parent = TYPE_INTERFACE,
.class_size = sizeof(XiveFabricClass),
};
static void xive_register_types(void)
{
type_register_static(&xive_fabric_info);
type_register_static(&xive_source_info);
type_register_static(&xive_notifier_info);
type_register_static(&xive_presenter_info);

22
include/hw/ppc/xive.h
View File

@ -399,6 +399,28 @@ int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx,
uint8_t nvt_blk, uint32_t nvt_idx,
bool cam_ignore, uint32_t logic_serv);
/*
* XIVE Fabric (Interface between Interrupt Controller and Machine)
*/
typedef struct XiveFabric XiveFabric;
#define TYPE_XIVE_FABRIC "xive-fabric"
#define XIVE_FABRIC(obj) \
INTERFACE_CHECK(XiveFabric, (obj), TYPE_XIVE_FABRIC)
#define XIVE_FABRIC_CLASS(klass) \
OBJECT_CLASS_CHECK(XiveFabricClass, (klass), TYPE_XIVE_FABRIC)
#define XIVE_FABRIC_GET_CLASS(obj) \
OBJECT_GET_CLASS(XiveFabricClass, (obj), TYPE_XIVE_FABRIC)
typedef struct XiveFabricClass {
InterfaceClass parent;
int (*match_nvt)(XiveFabric *xfb, uint8_t format,
uint8_t nvt_blk, uint32_t nvt_idx,
bool cam_ignore, uint8_t priority,
uint32_t logic_serv, XiveTCTXMatch *match);
} XiveFabricClass;
/*
* XIVE END ESBs
*/