Author: imp Date: Mon Jul 30 06:00:31 2012 New Revision: 238895 URL: http://svn.freebsd.org/changeset/base/238895
Log: Fix a couple of comments about the rm9200, and fix a couple of indentation issues. Add note that we need to implement at91sam9260 erratum workaround. Modified: head/sys/arm/at91/if_ate.c Modified: head/sys/arm/at91/if_ate.c ============================================================================== --- head/sys/arm/at91/if_ate.c Mon Jul 30 03:00:58 2012 (r238894) +++ head/sys/arm/at91/if_ate.c Mon Jul 30 06:00:31 2012 (r238895) @@ -569,8 +569,6 @@ ate_activate(device_t dev) /* * DMA tag and map for the TX descriptors. - * XXX Old EMAC (not EMACB) doesn't really need DMA'able - * memory. We could just malloc it. gja XXX */ if (bus_dma_tag_create(bus_get_dma_tag(dev), sizeof(eth_tx_desc_t), 0, BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, @@ -606,11 +604,10 @@ ate_activate(device_t dev) if (sc->is_emacb) { /* Write the descriptor queue address. */ WR4(sc, ETHB_TBQP, sc->tx_desc_phys); - } - /* EMACB: Enable transceiver input clock */ - if (sc->is_emacb) + /* EMACB: Enable transceiver input clock */ WR4(sc, ETHB_UIO, RD4(sc, ETHB_UIO) | ETHB_UIO_CLKE); + } return (0); @@ -676,7 +673,7 @@ ate_deactivate(struct ate_softc *sc) } if (sc->is_emacb) - WR4(sc, ETHB_UIO, RD4(sc, ETHB_UIO) & ~ETHB_UIO_CLKE); + WR4(sc, ETHB_UIO, RD4(sc, ETHB_UIO) & ~ETHB_UIO_CLKE); } /* @@ -849,12 +846,11 @@ ate_intr(void *xsc) return; if (status & ETH_ISR_RCOM) { - - bus_dmamap_sync(sc->rx_desc_tag, sc->rx_desc_map, + bus_dmamap_sync(sc->rx_desc_tag, sc->rx_desc_map, BUS_DMASYNC_POSTREAD); - rxdhead = &sc->rx_descs[sc->rxhead]; - while (rxdhead->addr & ETH_CPU_OWNER) { + rxdhead = &sc->rx_descs[sc->rxhead]; + while (rxdhead->addr & ETH_CPU_OWNER) { if (!sc->is_emacb) { /* * Simulate SAM9 FIRST/LAST bits for RM9200. @@ -933,7 +929,8 @@ ate_intr(void *xsc) /* XXX Performance robbing copy. Could * recieve directly to mbufs if not an - * RM9200. XXX */ + * RM9200. And even then we could likely + * copy just the protocol headers. XXX */ m_append(mb, count, sc->rx_buf[sc->rxhead]); remain -= count; } @@ -1014,6 +1011,9 @@ ate_intr(void *xsc) BARRIER(sc, ETH_CTL, 4, BUS_SPACE_BARRIER_WRITE); WR4(sc, ETH_CTL, reg | ETH_CTL_RE); } + + /* XXX need to work around SAM9260 errata 43.2.4.1: + * disable the mac, reset tx buffer, enable mac on TUND */ } /* @@ -1269,7 +1269,7 @@ atestop(struct ate_softc *sc) /* Turn off transeiver input clock */ if (sc->is_emacb) - WR4(sc, ETHB_UIO, RD4(sc, ETHB_UIO) & ~ETHB_UIO_CLKE); + WR4(sc, ETHB_UIO, RD4(sc, ETHB_UIO) & ~ETHB_UIO_CLKE); /* * XXX we should power down the EMAC if it isn't in use, after _______________________________________________ svn-src-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"