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xive: Use the XIVE fabric link under the XIVE router

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Now that the spapr and pnv machines do set the "xive-fabric" link, the
use of the XIVE fabric pointer becomes mandatory. This is checked with
an assert() in a new realize hook. Since the XIVE router is realized at
machine init for the all the machine's life time, no risk to abort an
already running guest (ie. not a hotplug path).

This gets rid of a qdev_get_machine() call.

Signed-off-by: Greg Kurz <groug@kaod.org>
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200106145645.4539-6-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Greg Kurz 2020-01-06 15:56:38 +01:00 committed by David Gibson
parent d1214b819f
commit 53981dd505
1 changed files with 11 additions and 3 deletions
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14
hw/intc/xive.c
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@ -1378,6 +1378,13 @@ static int xive_router_get_block_id(XiveRouter *xrtr)
return xrc->get_block_id(xrtr);
}
static void xive_router_realize(DeviceState *dev, Error **errp)
{
XiveRouter *xrtr = XIVE_ROUTER(dev);
assert(xrtr->xfb);
}
/*
* Encode the HW CAM line in the block group mode format :
*
@ -1470,12 +1477,11 @@ int xive_presenter_tctx_match(XivePresenter *xptr, XiveTCTX *tctx,
*
* The parameters represent what is sent on the PowerBus
*/
static bool xive_presenter_notify(uint8_t format,
static bool xive_presenter_notify(XiveFabric *xfb, uint8_t format,
uint8_t nvt_blk, uint32_t nvt_idx,
bool cam_ignore, uint8_t priority,
uint32_t logic_serv)
{
XiveFabric *xfb = XIVE_FABRIC(qdev_get_machine());
XiveFabricClass *xfc = XIVE_FABRIC_GET_CLASS(xfb);
XiveTCTXMatch match = { .tctx = NULL, .ring = 0 };
int count;
@ -1607,7 +1613,7 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk,
return;
}
found = xive_presenter_notify(format, nvt_blk, nvt_idx,
found = xive_presenter_notify(xrtr->xfb, format, nvt_blk, nvt_idx,
xive_get_field32(END_W7_F0_IGNORE, end.w7),
priority,
xive_get_field32(END_W7_F1_LOG_SERVER_ID, end.w7));
@ -1727,6 +1733,8 @@ static void xive_router_class_init(ObjectClass *klass, void *data)
dc->desc = "XIVE Router Engine";
dc->props = xive_router_properties;
/* Parent is SysBusDeviceClass. No need to call its realize hook */
dc->realize = xive_router_realize;
xnc->notify = xive_router_notify;
}