diff options
| author | David Gwynne <dlg@cvs.openbsd.org> | 2021-01-17 02:52:22 +0000 |
|---|---|---|
| committer | David Gwynne <dlg@cvs.openbsd.org> | 2021-01-17 02:52:22 +0000 |
| commit | 84b631c5bf8555c68006f3ef5f9ac71a5dc9c01b (patch) | |
| tree | 06b166a7c66aa0f6529b6f2e2610f98ef49da883 | |
| parent | 580d6b083b3a247f3a2514c0752fe34ce5ce2281 (diff) | |
this hardware is fine with BUS_DMA_64BIT mappings.
this raises performance of tcpbench on an m3000 from ~3kpps and
~8MB/s to ~70kpps and ~191MB/s when transmitting, and ~10kpps and
~15MB/s to ~120kpps and 174MB/s when receiving.
i also tested this on a v245 and an m4000 a while back.
| -rw-r--r-- | sys/dev/pci/if_myx.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/sys/dev/pci/if_myx.c b/sys/dev/pci/if_myx.c index 0ec62880fe3..21b89c4789f 100644 --- a/sys/dev/pci/if_myx.c +++ b/sys/dev/pci/if_myx.c @@ -1,4 +1,4 @@ -/* $OpenBSD: if_myx.c,v 1.113 2020/12/12 11:48:53 jan Exp $ */ +/* $OpenBSD: if_myx.c,v 1.114 2021/01/17 02:52:21 dlg Exp $ */ /* * Copyright (c) 2007 Reyk Floeter <reyk@openbsd.org> @@ -658,7 +658,8 @@ myx_dmamem_alloc(struct myx_softc *sc, struct myx_dmamem *mxm, mxm->mxm_size = size; if (bus_dmamap_create(sc->sc_dmat, mxm->mxm_size, 1, - mxm->mxm_size, 0, BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, + mxm->mxm_size, 0, + BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW | BUS_DMA_64BIT, &mxm->mxm_map) != 0) return (1); if (bus_dmamem_alloc(sc->sc_dmat, mxm->mxm_size, @@ -1892,7 +1893,8 @@ myx_rx_init(struct myx_softc *sc, int ring, bus_size_t size) for (i = 0; i < sc->sc_rx_ring_count; i++) { ms = &mrr->mrr_slots[i]; rv = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, - BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, &ms->ms_map); + BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW | BUS_DMA_64BIT, + &ms->ms_map); if (rv != 0) goto destroy; @@ -2041,7 +2043,8 @@ myx_tx_init(struct myx_softc *sc, bus_size_t size) ms = &sc->sc_tx_slots[i]; rv = bus_dmamap_create(sc->sc_dmat, size, sc->sc_tx_nsegs, sc->sc_tx_boundary, sc->sc_tx_boundary, - BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW, &ms->ms_map); + BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW | BUS_DMA_64BIT, + &ms->ms_map); if (rv != 0) goto destroy; } |