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Subject: Re: Working on ATA: Less internal state, more asking

Re: Working on ATA: Less internal state, more asking

From: Jonathan Gordon <>
Date: Sat, 4 Aug 2012 20:31:56 +1000

On 3 August 2012 23:51, Jonas Wielicki <> wrote:
> Hi all,
> I'm (still *sigh*) hunting my SSD issues on iriver (as posted previously
> on the list[1][2]). I think it basically reduces to a “have you tried
> turning it off and on again” fix, because somehow the SSD seems to get
> stuck sometimes, a powercycle can mitigiate that in most of the cases.
> BUT, in the course I implemented some ATA parts which might come in
> handy with devices which are behaving weirdly, like going to sleep
> automatically, namely, I removed the internal rockbox state about the
> drive's power management state and added requests to get the current
> state instead (using CMD_CHECK_POWER_MODE).
> I realize that I'll probably have to keep some of my rockbox kernel
> patched to work more or less with that SSD (I really should try to
> return it, maybe it's just broken). But some of these changes may give
> rockbox advantages when dealing with buggy devices. Here is a summarized
> list of changes:
> * check the current power mode of the device before using it
> * explicitly wake it up, if needed
> * two levels of error handling:
> 1. do a hard reset
> 2. powercycle the IDE bus
> I wonder what, if any, of this is appreciated by rockbox so that I can
> wrap it up as one or more nice commits for review at gerrit.
> best regards,
> Jonas Wielicki
> [1]:
> [2]:

Please put up your patches on gerrit and then we can figure out wether
or not they are wanted in git (sounds like they are!).

Received on 2012-08-04

Page was last modified "Jan 10 2012" The Rockbox Crew