Date: Fri, 5 Nov 2010 18:19:55 +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: r214840 - head/sys/dev/re Message-ID: <201011051819.oA5IJtk2005064@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: yongari Date: Fri Nov 5 18:19:54 2010 New Revision: 214840 URL: http://svn.freebsd.org/changeset/base/214840 Log: Enable 64bit DMA addressing for RTL810xE/RTL8168/RTL8111 PCIe controllers. Some old PCI controllers may work with DAC but it was known to be buggy so 64bit DMA addressing is used only on PCIe controllers. Modified: head/sys/dev/re/if_re.c Modified: head/sys/dev/re/if_re.c ============================================================================== --- head/sys/dev/re/if_re.c Fri Nov 5 16:04:10 2010 (r214839) +++ head/sys/dev/re/if_re.c Fri Nov 5 18:19:54 2010 (r214840) @@ -934,6 +934,7 @@ re_dma_map_addr(void *arg, bus_dma_segme static int re_allocmem(device_t dev, struct rl_softc *sc) { + bus_addr_t lowaddr; bus_size_t rx_list_size, tx_list_size; int error; int i; @@ -947,10 +948,13 @@ re_allocmem(device_t dev, struct rl_soft * register should be set. However some RealTek chips are known * to be buggy on DAC handling, therefore disable DAC by limiting * DMA address space to 32bit. PCIe variants of RealTek chips - * may not have the limitation but I took safer path. + * may not have the limitation. */ + lowaddr = BUS_SPACE_MAXADDR; + if ((sc->rl_flags & RL_FLAG_PCIE) == 0) + lowaddr = BUS_SPACE_MAXADDR_32BIT; error = bus_dma_tag_create(bus_get_dma_tag(dev), 1, 0, - BUS_SPACE_MAXADDR_32BIT, BUS_SPACE_MAXADDR, NULL, NULL, + lowaddr, BUS_SPACE_MAXADDR, NULL, NULL, BUS_SPACE_MAXSIZE_32BIT, 0, BUS_SPACE_MAXSIZE_32BIT, 0, NULL, NULL, &sc->rl_parent_tag); if (error) {
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201011051819.oA5IJtk2005064>