diff options
| author | Emmanuel Vadot <manu@FreeBSD.org> | 2023-10-06 16:04:49 +0000 |
|---|---|---|
| committer | Emmanuel Vadot <manu@FreeBSD.org> | 2023-10-06 17:05:45 +0000 |
| commit | 38cbdae33b7c3f772845c06f52b86c0ddeab6a17 (patch) | |
| tree | a1f7296529e40e808b8c18babf19b4dbc7788fbb | |
| parent | cf037a17c7c81e8a2e73c89eb90877f2625749d7 (diff) | |
| download | src-38cbdae33b7c3f772845c06f52b86c0ddeab6a17.tar.gz src-38cbdae33b7c3f772845c06f52b86c0ddeab6a17.zip | |
dwc: Rewrite barrier part
We only need a barrier after writing the OWN bit so everything is
coherent for the DMA engine.
| -rw-r--r-- | sys/dev/dwc/dwc1000_dma.c | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/sys/dev/dwc/dwc1000_dma.c b/sys/dev/dwc/dwc1000_dma.c index f6baa0bd3e45..4f8ae088305a 100644 --- a/sys/dev/dwc/dwc1000_dma.c +++ b/sys/dev/dwc/dwc1000_dma.c @@ -216,7 +216,6 @@ txdesc_setup(struct dwc_softc *sc, int idx, bus_addr_t paddr, sc->txdesc_ring[idx].addr1 = (uint32_t)(paddr); sc->txdesc_ring[idx].desc0 = desc0; sc->txdesc_ring[idx].desc1 = desc1; - wmb(); sc->txdesc_ring[idx].desc0 |= TDESC0_OWN; wmb(); } @@ -237,7 +236,6 @@ rxdesc_setup(struct dwc_softc *sc, int idx, bus_addr_t paddr) sc->rxdesc_ring[idx].desc1 = ERDESC1_RCH | MIN(MCLBYTES, ERDESC1_RBS1_MASK); - wmb(); sc->rxdesc_ring[idx].desc0 = RDESC0_OWN; wmb(); return (nidx); @@ -524,7 +522,6 @@ dma1000_rxfinish_locked(struct dwc_softc *sc) m = dwc_rxfinish_one(sc, desc, sc->rxbuf_map + idx); if (m == NULL) { - wmb(); desc->desc0 = RDESC0_OWN; wmb(); } else { |