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Date: Wed, 29 Jul 2009 21:21:23 +0300
From: Alexander Motin <mav@FreeBSD.org>
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To: Ilya Zhuravlev <i.a.zhuravlev@cbtnet.ru>
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Cc: FreeBSD-Current <freebsd-current@freebsd.org>
Subject: Re: RFC: ATA to CAM integration patch
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Ilya Zhuravlev wrote:
> ahci cannot attach drives
> 8.0-beta2, laptop asus k50in, nvidia MCP75L-based
> 
> ahci0: [THREAD]
> ahci0: AHCI v1.20 with 2 3Gbps ports, Port Multiplier supported
> ahcich0: <AHCI channel> at channel 0 on ahci0
> ahcich0: [THREAD]
> ahcich1: <AHCI channel> at channel 1 on ahci0
> ahcich1: [THREAD]
> ......
> (aprobe0:ahcich0:0:15:0): SIGNATURE: 0000
> (aprobe0:ahcich0:0:0:0): SIGNATURE: 0000
> (aprobe0:ahcich0:0:0:0): Uncorrected Parity Error
> (aprobe0:ahcich0:0:0:0): Retrying Command
> (aprobe0:ahcich0:0:0:0): Uncoreccted Parity Error
> (aprobe0:ahcich0:0:0:0): error 5
> (aprobe0:ahcich0:0:0:0): Retries Exhausted
> (aprobe1:ahcich1:0:15:0): SIGNATURE: eb14
> (aprobe0:ahcich1:0:0:0): SIGNATURE: eb14
> (aprobe0:ahcich1:0:0:0): Uncoreccted Parity Error
> (aprobe0:ahcich1:0:0:0): Retrying Command
> (aprobe0:ahcich1:0:0:0): Uncoreccted Parity Error
> (aprobe0:ahcich1:0:0:0): error 5
> (aprobe0:ahcich1:0:0:0): Retries Exhausted
> 
> pciconf with ata-driver and ata-compat enabled in bios:
> atapci0@pci0:0:11:0:    class=0x010185 card=0x1cf71043 chip=0x0ab510de 
> rev=0xb1 hdr=0x00
>     vendor     = 'Nvidia Corp'
>     class      = mass storage
>     subclass   = ATA
>     bar   [10] = type I/O Port, range 32, base 0xc080, size  8, enabled
>     bar   [14] = type I/O Port, range 32, base 0xc000, size  4, enabled
>     bar   [18] = type I/O Port, range 32, base 0xbc00, size  8, enabled
>     bar   [1c] = type I/O Port, range 32, base 0xb880, size  4, enabled
>     bar   [20] = type I/O Port, range 32, base 0xb800, size 16, enabled
>     bar   [24] = type Memory, range 32, base 0xfae7c000, size 8192, enabled
>     cap 01[44] = powerspec 2  supports D0 D3  current D0
>     cap 12[8c] = SATA Index-Data Pair
>     cap 05[b0] = MSI supports 8 messages, 64 bit
> 
> atacontrol for devices on channels attached

Try please to uncomment device_printf() lines inside ahci_ch_intr() 
function. It could give some ideas about what's going on there.

-- 
Alexander Motin