Date: Tue, 17 Jun 2003 22:24:53 +0100 From: Nicolai E M Plum <nicolai-freebsd@esperi.org> To: freebsd-current@freebsd.org Subject: ATA DMA broken/kernel panic with 5.1-R/5.1-C and VIA 82C586B Message-ID: <16111.34597.145917.481769@amonsul.esperi.net>
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Hi I installed 5.1-RELEASE from the CD images, and have problems using DMA on my ATA discs. I get the same problem on several discs, both several years old and brand new, across several vendors. 4.6-RELEASE handles the discs fine. Relevant excepts from the boot messages are below, the entire thing can be seen at http://www.esperi.org/nicolai/misc/dmesg.eriador FreeBSD 5.1-RELEASE #0: Thu Jun 5 02:55:42 GMT 2003 root@wv1u.btc.adaptec.com:/usr/obj/usr/src/sys/GENERIC ... atapci0: <VIA 82C586B UDMA33 controller> port 0xfcd0-0xfcdf mem 0xfbffe000-0xfbffffff at device 7.1 on pci0 ata0: at 0x1f0 irq 14 on atapci0 ata1: at 0x170 irq 15 on atapci0 ... Timecounters tick every 10.000 msec ad0: 114473MB <ST3120022A> [232581/16/63] at ata0-master UDMA33 ad0: READ command timeout tag=0 serv=0 - resetting ata0: resetting devices .. done ... [ this repeats ] ad1: trying fallback to PIO mode ata0: resetting devices .. done Mounting root from ufs:/dev/ad0s1a I noticed some ATA problems solved in -current recently, so I tried compiling a kernel from sources about 2 days ago. Booting from that (GENERIC) kernel, I do not get "Mounting root..", instead I get (approximately, can't cut/paste that console): Fatal trap 12: page fault while in kernel mode fault virtual address = 0xdeadc0de fault code = supervisor read, page not present instruction pointer = 0x8:0xdeadcode stack pointer = 0x10:0xc736bc38 frame pointer = 0x19:0xc736bc50 .... current process = 21 (irc14: ata0) kernel: type 12 trap, code=0 Is this a known problem, perhaps specific to the 82C586B ATA controller? Thanks Nicolai
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