[PATCH] IDE BIOS timings, autotune cleanup

From: Torben Mathiasen (torben.mathiasen@hp.com)
Date: Fri Nov 01 2002 - 19:02:19 EST

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Hi,

The attached patch cleans up the 'autotune' concept used in the current 2.4
IDE driver. It also adds support for using pure BIOS IDE timings with DMA/PIO.
On some systems the BIOS has a far better overview on how things are connected
(some chipsets don't support >ata66 speed detection, etc).

The patch introduces 2 new boot parameters in addtion to the current two
autotune options (autotune vs. noautotune):

ide0=autotune -> kernel IDE timing setup
ide0=noautotune -> BIOS IDE timing setup (PIO only)
ide0=noautotune_dma -> BIOS IDE timing setup (DMA/PIO)
ide0=noautotune_force -> BIOS IDE (DMA/PIO), chipset *cannot* override.

Default is autotune (as always) and chipsets can override the other options
unless *_force is used.

All chipset drivers updated. Tested with PIIX and Serverworks.

Regards,
Torben Mathiasen

text/plain attachment: ide_bios-2.4.20rc1-2.diff

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Next message: Tom Rini: "Re: Where's the documentation for Kconfig?"
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