> Thus, I have implemented the 32-bit mode to bring the performance back > to the level of the old IDE driver. I jumped from 1.5 MB/s to 2.5 MB/s, > which is an important difference at this level of performance, especially > when large files are read. The 32-bit mode is enabled using the ioctl > which is already implemented but only accepts a null value. Excellent, that has been on my TODO list for some time and I'd only gotten as far as putting into the ISA/VLB drivers rather than generally testing. I'm not however sure this should be a DFLAG but should be an alernative ata_data_xfer method - I say that because VLB needs to wrap it and some controllers have quirky rules for 32bit xfers. (Also some small number of pre ATA disks can't handle the different timing cycles from a 32bit ISA I/O being redirected their way). Alan - To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
