diff options
Diffstat (limited to 'hw/intc')
| -rw-r--r-- | hw/intc/xive.c | 44 |
1 files changed, 35 insertions, 9 deletions
diff --git a/hw/intc/xive.c b/hw/intc/xive.c index 12f0d09df6..3fe84f3e76 100644 --- a/hw/intc/xive.c +++ b/hw/intc/xive.c @@ -1430,6 +1430,27 @@ static bool xive_presenter_notify(XiveRouter *xrtr, uint8_t format, } /* + * Notification using the END ESe/ESn bit (Event State Buffer for + * escalation and notification). Profide futher coalescing in the + * Router. + */ +static bool xive_router_end_es_notify(XiveRouter *xrtr, uint8_t end_blk, + uint32_t end_idx, XiveEND *end, + uint32_t end_esmask) +{ + uint8_t pq = xive_get_field32(end_esmask, end->w1); + bool notify = xive_esb_trigger(&pq); + + if (pq != xive_get_field32(end_esmask, end->w1)) { + end->w1 = xive_set_field32(end_esmask, end->w1, pq); + xive_router_write_end(xrtr, end_blk, end_idx, end, 1); + } + + /* ESe/n[Q]=1 : end of notification */ + return notify; +} + +/* * An END trigger can come from an event trigger (IPI or HW) or from * another chip. We don't model the PowerBus but the END trigger * message has the same parameters than in the function below. @@ -1485,16 +1506,9 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk, * even futher coalescing in the Router */ if (!xive_end_is_notify(&end)) { - uint8_t pq = xive_get_field32(END_W1_ESn, end.w1); - bool notify = xive_esb_trigger(&pq); - - if (pq != xive_get_field32(END_W1_ESn, end.w1)) { - end.w1 = xive_set_field32(END_W1_ESn, end.w1, pq); - xive_router_write_end(xrtr, end_blk, end_idx, &end, 1); - } - /* ESn[Q]=1 : end of notification */ - if (!notify) { + if (!xive_router_end_es_notify(xrtr, end_blk, end_idx, + &end, END_W1_ESn)) { return; } } @@ -1559,6 +1573,18 @@ static void xive_router_end_notify(XiveRouter *xrtr, uint8_t end_blk, } /* + * Check the END ESe (Event State Buffer for escalation) for even + * futher coalescing in the Router + */ + if (!xive_end_is_uncond_escalation(&end)) { + /* ESe[Q]=1 : end of notification */ + if (!xive_router_end_es_notify(xrtr, end_blk, end_idx, + &end, END_W1_ESe)) { + return; + } + } + + /* * The END trigger becomes an Escalation trigger */ xive_router_end_notify(xrtr, |