Date: Mon, 31 Aug 2009 22:09:48 +0000 (UTC) From: Pyun YongHyeon <yongari@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r196721 - head/sys/dev/txp Message-ID: <200908312209.n7VM9mNO040524@svn.freebsd.org>
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Author: yongari Date: Mon Aug 31 22:09:48 2009 New Revision: 196721 URL: http://svn.freebsd.org/changeset/base/196721 Log: Make sure rx descriptor ring align on 16 bytes. I guess the alignment requirement could be multiple of 4 bytes but I think using descriptor size would make intention clearer. Previously the size of rx descriptor was not power of 2 so it caused panic in bus_dmamem_alloc(9). Reported by: Jeff Blank (jb000003 <> mr-happy dot com) MFC after: 3 days Modified: head/sys/dev/txp/if_txp.c Modified: head/sys/dev/txp/if_txp.c ============================================================================== --- head/sys/dev/txp/if_txp.c Mon Aug 31 21:36:19 2009 (r196720) +++ head/sys/dev/txp/if_txp.c Mon Aug 31 22:09:48 2009 (r196721) @@ -1389,7 +1389,8 @@ txp_alloc_rings(struct txp_softc *sc) /* High priority rx ring. */ error = txp_dma_alloc(sc, "hi priority rx ring", - &sc->sc_cdata.txp_rxhiring_tag, sizeof(struct txp_rx_desc), 0, + &sc->sc_cdata.txp_rxhiring_tag, + roundup(sizeof(struct txp_rx_desc), 16), 0, &sc->sc_cdata.txp_rxhiring_map, (void **)&sc->sc_ldata.txp_rxhiring, sizeof(struct txp_rx_desc) * RX_ENTRIES, &sc->sc_ldata.txp_rxhiring_paddr); @@ -1409,7 +1410,8 @@ txp_alloc_rings(struct txp_softc *sc) /* Low priority rx ring. */ error = txp_dma_alloc(sc, "low priority rx ring", - &sc->sc_cdata.txp_rxloring_tag, sizeof(struct txp_rx_desc), 0, + &sc->sc_cdata.txp_rxloring_tag, + roundup(sizeof(struct txp_rx_desc), 16), 0, &sc->sc_cdata.txp_rxloring_map, (void **)&sc->sc_ldata.txp_rxloring, sizeof(struct txp_rx_desc) * RX_ENTRIES, &sc->sc_ldata.txp_rxloring_paddr);
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