This patch fixes a lost interrupt problem with the Iomega ATAPI Zip 100 drive
on an Asus A7V133 board (uses South Bridge VIA VT82C686 chip). The problem
occurs when trying to format the drive using mke2fs /dev/hdx1. The patch
introduces an adjustable delay between the time the drive asserts DRQ and
deasserts BSY after issuing the packet command and before transferring the 12
byte packet.. With delays of 3-5 ticks, the filesystem creation occurs
without retries/resets. The delay can be adjusted through the proc interface
by adjusting the value assigned to the parameter ticks. (Without the patch, I
experienced 111 lost interrupts, resulting in an elapsed time of over 2 hours
to format the drive. With the patch, mke2fs completed in <15 seconds.)
I am looking for testing, by others who have the internal Zip drive and may
have experienced the same problem, as well as comments.
Thanks,
--Skip
This archive was generated by hypermail 2b29 : Wed Oct 31 2001 - 21:00:39 EST