Messages in this thread | | | Date | Tue, 04 Mar 2003 13:20:26 -0500 | From | Mathias Kretschmer <> | Subject | IDE DVD reading & error handling |
| |
Hello,
Is there a way to optimize the IDE layer to handle DVD read errors more gracefully ?
Most used DVDs (borrowed from a local library, etc.) seem to have some defects. Those cause the IDE layer to get stuck for quite a while, interrupting the movie playback. It might be better to just return an error for that sector and let the player software continue.
I wonder if it would be possible to tune the IDE layer by i.e. reducing the number of retries and disabling the controller reset, etc.
I haven't fiddle with the below numbers, yet. Just wondering if that could improve the situation, or if there are any other tricks that one could play here ?
/* * Probably not wise to fiddle with these */ #define ERROR_MAX 8 /* Max read/write errors per sector */ #define ERROR_RESET 3 /* Reset controller every 4th retry */ #define ERROR_RECAL 1 /* Recalibrate every 2nd retry */
Cheers,
Mathias
PS: Also which DVD ROM do people recommended in general ? Which one seems to have a decent error correction scheme not just a high read speed?
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |