Date: Sun, 26 Oct 2008 16:57:54 +0100 From: "Marco Trillo" <marcotrillo@gmail.com> To: "Nathan Whitehorn" <nwhitehorn@freebsd.org> Cc: FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: ATA DMA problems with recent -current Message-ID: <b9c23c9f0810260857x5c3647e7v7963ca56539c3390@mail.gmail.com> In-Reply-To: <49048D19.7070309@freebsd.org> References: <b9c23c9f0810260517j61587dc6gd91f35a49d4b9e38@mail.gmail.com> <49048D19.7070309@freebsd.org>
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Hi, On Sun, Oct 26, 2008 at 4:30 PM, Nathan Whitehorn <nwhitehorn@freebsd.org> wrote: >> Hi all, >> >> I just updated my -current kernel to today sources -- the previous >> kernel was from Oct 11. With the new kernel I'm getting ad0 ATA DMA >> timeouts, which get worse when I stress the drive. >> > > The only thing that changed since 11 Oct was that I redid the PCI handling > by importing sparc64's architecture. This *should* have changed nothing, > since I just reshuffled some code, but apparently it didn't. One of the few > actual changes was that ata_kauai now attaches only to the first IRQ (39) > instead of both OF IRQs (39 and 1). However, it never used the second one, > so it should have changed nothing. Things to try: > > - Make ata_kauai add IRQ 1 to its resource list again, just like it > hardcodes 39. > - IRQ 1 is shared with the i2s controller. Try disabling it? > > I'm pretty confused about how it is that things have broken, though. I removed the i2s driver, but got the same results. However I think I have located the source of the problem. I diffed the 'ident' output on both kernels and noticed something which seemed related: - $FreeBSD: src/sys/dev/ata/ata-dma.c,v 1.157 2008/10/09 12:56:57 sos Exp $ + $FreeBSD: src/sys/dev/ata/ata-dma.c,v 1.158 2008/10/21 18:51:55 jhb Exp $ Then I reverted ata-dma.c to revision 1.157. It works! I get no more timeouts. Currently it's untarring the ports.tar.gz file quite happily! Thanks, Marco
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