Intialize interrupt moderation control register. The magic value
was chosen by lots of trial and errors. The chosen value shows good interrupt moderation without additional latency. Without this change, controller can generate more than 140k interrupts per second under high network load. Submitted by: xclin <xclin <> cs dot nctu dot edu dot tw >
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Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=207071
@ -1551,10 +1551,13 @@ sge_init_locked(struct sge_softc *sc)
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/*
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* XXX Try to mitigate interrupts.
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*/
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CSR_WRITE_4(sc, IntrControl, 0x08880000);
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#ifdef notyet
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if (sc->sge_intrcontrol != 0)
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CSR_WRITE_4(sc, IntrControl, sc->sge_intrcontrol);
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if (sc->sge_intrtimer != 0)
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CSR_WRITE_4(sc, IntrTimer, sc->sge_intrtimer);
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#endif
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/*
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* Clear and enable interrupts.
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