motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-04 16:23:55 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

ppc/xive: Introduce a XivePresenter interface

Browse source 
When the XIVE IVRE sub-engine (XiveRouter) looks for a Notification
Virtual Target (NVT) to notify, it broadcasts a message on the
PowerBUS to find an XIVE IVPE sub-engine (Presenter) with the NVT
dispatched on one of its HW threads, and then forwards the
notification if any response was received.

The current XIVE presenter model is sufficient for the pseries machine
because it has a single interrupt controller device, but the PowerNV
machine can have multiple chips each having its own interrupt
controller. In this case, the XIVE presenter model is too simple and
the CAM line matching should scan all chips of the system.

To start fixing this issue, we first extend the XIVE Router model with
a new XivePresenter QOM interface representing the XIVE IVPE
sub-engine. This interface exposes a 'match_nvt' handler which the
sPAPR and PowerNV XIVE Router models will need to implement to perform
the CAM line matching.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191125065820.927-2-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2019-11-25 07:58:01 +01:00 • committed by David Gibson
parent e2392d4395
commit 13bee8521c
2 changed files with 49 additions and 9 deletions
Download patch file Download diff file Expand all files Collapse all files

32
include/hw/ppc/xive.h
View file

@ -367,6 +367,38 @@ int xive_router_write_nvt(XiveRouter *xrtr, uint8_t nvt_blk, uint32_t nvt_idx,
XiveTCTX *xive_router_get_tctx(XiveRouter *xrtr, CPUState *cs);
void xive_router_notify(XiveNotifier *xn, uint32_t lisn);
/*
* XIVE Presenter
*/
typedef struct XiveTCTXMatch {
XiveTCTX *tctx;
uint8_t ring;
} XiveTCTXMatch;
typedef struct XivePresenter XivePresenter;
#define TYPE_XIVE_PRESENTER "xive-presenter"
#define XIVE_PRESENTER(obj) \
INTERFACE_CHECK(XivePresenter, (obj), TYPE_XIVE_PRESENTER)
#define XIVE_PRESENTER_CLASS(klass) \
OBJECT_CLASS_CHECK(XivePresenterClass, (klass), TYPE_XIVE_PRESENTER)
#define XIVE_PRESENTER_GET_CLASS(obj) \
OBJECT_GET_CLASS(XivePresenterClass, (obj), TYPE_XIVE_PRESENTER)
typedef struct XivePresenterClass {
InterfaceClass parent;
int (*match_nvt)(XivePresenter *xptr, uint8_t format,
uint8_t nvt_blk, uint32_t nvt_idx,
bool cam_ignore, uint8_t priority,
uint32_t logic_serv, XiveTCTXMatch *match);
} XivePresenterClass;
int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx,
uint8_t format,
uint8_t nvt_blk, uint32_t nvt_idx,
bool cam_ignore, uint32_t logic_serv);
/*
* XIVE END ESBs
*/