kern/130171: UDMA CF cards do not work with FreeBSD

[Heikki Suonsivu]

The following reply was made to PR kern/130171; it has been noted by GNATS.

From: Heikki Suonsivu <hsu at bbnetworks.net>
To: Mark Linimon <linimon at lonesome.com>
Cc: FreeBSD-gnats-submit at FreeBSD.org
Subject: Re: kern/130171: UDMA CF cards do not work with FreeBSD
Date: Wed, 04 Feb 2009 18:46:17 +0200

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 Mark Linimon wrote:
 > You'll need to give us the log of exactly what happens when you
 > plug this card in and try to access it.
 
 When booting from CD to install FreeBSD, this happens when kernel comes 
 to detection of ide drives:
 
 ad3: 30592 MB <CF 20070831> at ata1-slave UDMA33
 ad3: FAILURE_READ_DMA timed out LBA=62652415
 ad3: FAILURE_READ_DMA timed out LBA=62652399
 ad3: FAILURE_READ_DMA timed out LBA=62652412
 ad3: FAILURE_READ_DMA timed out LBA=62652413
 ... other messages about cd drive
 retrying (1 retry left) LBA=62652415
 retrying (0 retries left) LBA=62652415
 ... this will keep repeating
 
 Copied from screen by hand, typos are mine.
 
 It would not seem to be able to actually get anything read or written.
 
 Disabling DMA apparently works but access becomes slow and loads cpu.
 
 I tested latest Sandisk Extreme III 16G card, and it works even though 
 it is UDMA card.  Older Extreme III cards were recognized as WDMA2 
 cards.  This would indicate that it is card specific, not UDMA specific.
 
 The symptoms are the same on Transcend 32G card.  I do not know if the 
 cards are any different, Transcend usually ships 
 random-whoever-made-best-offer cards.  I thought that Pretec might have 
 had something of their own in the past, but do not really know how they 
 do it these days, maybe it is the same controller chip in both...
 
 I did not notice that Linux would have complained about anything, and 
 was showing it as UDMA disk.
 
 
 
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