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dwc: Rewrite barrier part

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We only need a barrier after writing the OWN bit so everything is
coherent for the DMA engine.
This commit is contained in:
Emmanuel Vadot 2023-10-06 18:04:49 +02:00
parent cf037a17c7
commit 38cbdae33b
1 changed files with 0 additions and 3 deletions
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3
sys/dev/dwc/dwc1000_dma.c
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@ -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 {