Date: Mon, 2 Jun 2008 17:46:30 -0400 From: John Baldwin <jhb@freebsd.org> To: freebsd-current@freebsd.org Cc: Barney Cordoba <barney_cordoba@yahoo.com> Subject: Re: HT1000 Crash dump failure Message-ID: <200806021746.30557.jhb@freebsd.org> In-Reply-To: <810100.49150.qm@web63914.mail.re1.yahoo.com> References: <810100.49150.qm@web63914.mail.re1.yahoo.com>
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On Monday 02 June 2008 04:52:59 pm Barney Cordoba wrote:
> I'm not sure how best to fix it, but it seems that
> this broke crash dumps on
> the HT1000 chipset:
> exit1() at exit1+0x39d
> sys_exit() at sys_exit+0xe
> ia32_syscall() at ia32_syscall+0x256
> Xint0x80_syscall() at Xint0x80_syscall+0x5d
> Uptime: 5d0h51m55s
> Physical memory: 4084 MB
> Dumping 325 MB:ata2: FAILURE - oversized DMA transfer
> attempt 65536 > 64512
> ad4: setting up DMA failed
> --------------- Previous Message ----------------
> ** DUMP FAILED (ERROR 5) **
> Automatic reboot in 15 seconds - press a key on the
> console to abort
> Rebooting...
> cpu_reset: Restarting BSP
> I'm guessing that the atadev->max_iosize is still set
> to 64k somehow (DMA
> default) for the ata disk when it does the check in
> ad_strategy(), but I'm
> not sure how as for the HT1000 chipset at least
> ch->dma->max_iosize is set to
> 63k in the controller allocate routine which should be
> run before the child
> disk devices are probed and attached AFAICT.
> --
> John Baldwin
>
> ----------------------------------
>
> I found this message, but no resolution. Has anyone
> figured out how not to get the oversized DMA error
> with HT1000 chipset?
Yeah, try this patch. I get massive instability on RELENG_7 HT1000 systems
w/o it.
Index: ata-chipset.c
===================================================================
RCS file: /usr/cvs/src/sys/dev/ata/ata-chipset.c,v
retrieving revision 1.219
diff -u -r1.219 ata-chipset.c
--- ata-chipset.c 21 Apr 2008 10:51:38 -0000 1.219
+++ ata-chipset.c 2 Jun 2008 21:45:54 -0000
@@ -1825,7 +1825,7 @@
int error;
ch->dma.alignment = 16;
- ch->dma.max_iosize = 126 * DEV_BSIZE;
+ ch->dma.max_iosize = 64 * DEV_BSIZE;
mode = ata_limit_mode(dev, mode, ATA_UDMA2);
@@ -3212,7 +3212,7 @@
ch->dma.max_address = BUS_SPACE_MAXADDR;
/* chip does not reliably do 64K DMA transfers */
- ch->dma.max_iosize = 126 * DEV_BSIZE;
+ ch->dma.max_iosize = 64 * DEV_BSIZE;
}
@@ -3261,7 +3261,7 @@
int error;
ch->dma.alignment = 16;
- ch->dma.max_iosize = 126 * DEV_BSIZE;
+ ch->dma.max_iosize = 64 * DEV_BSIZE;
mode = ata_limit_mode(dev, mode, ATA_UDMA2);
@@ -4664,7 +4664,7 @@
{ ATA_CSB6, 0x00, SWKS100, 0, ATA_UDMA5, "CSB6" },
{ ATA_CSB6_1, 0x00, SWKS66, 0, ATA_UDMA4, "CSB6" },
{ ATA_HT1000, 0x00, SWKS100, 0, ATA_UDMA5, "HT1000" },
- { ATA_HT1000_S1, 0x00, SWKS100, 4, ATA_SA150, "HT1000" },
+ { ATA_HT1000_S1, 0x00, SWKSMIO, 4, ATA_SA150, "HT1000" },
{ ATA_HT1000_S2, 0x00, SWKSMIO, 4, ATA_SA150, "HT1000" },
{ ATA_K2, 0x00, SWKSMIO, 4, ATA_SA150, "K2" },
{ ATA_FRODO4, 0x00, SWKSMIO, 4, ATA_SA150, "Frodo4" },
@@ -4766,7 +4766,7 @@
ch->hw.tf_write = ata_serverworks_tf_write;
/* chip does not reliably do 64K DMA transfers */
- ch->dma.max_iosize = 126 * DEV_BSIZE;
+ ch->dma.max_iosize = 64 * DEV_BSIZE;
return 0;
}
--
John Baldwin
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