Re: [RFC PATCH] nForce4 ADMA with NCQ: It's aliiiive..

From: Robert Hancock
Date: Sat Oct 07 2006 - 11:55:22 EST


Prakash Punnoor wrote:
Am Samstag 07 Oktober 2006 10:08 schrieb Robert Hancock:
I've been working on the patch for sata_nv ADMA support for nForce4 that

Nice!

make the default 1). I only enabled ADMA on those chipsets and not
MCP51, MCP55 or MCP61 since that was all that the original NVIDIA
version did. I assume there was a reason for this, though maybe not.

Unfortunately it doesn't work for me on MCP51 if I change GENERIC to ADMA. So I wonder whether MCP51 has ADMA mode or what needs to be done to get NCQ working. :-(

What happened when you tried it? It would be useful if you could change the #undef in these lines:

53 #undef ATA_DEBUG /* debugging output */
54 #undef ATA_VERBOSE_DEBUG /* yet more debugging output */

in include/linux/libata.h to #define and rebuild and try it then, that will spew out a bunch more output and I can see if any reasonable looking values are showing up at all. I was capturing this output the crude way, booting with vga=6 to get a smaller font and taking a picture of the screen :-) Also, maybe post the lspci -v output from the SATA controller..

If that doesn't provide any insight, maybe the docs Jeff has provide the answer for whether or not the MCP5x/MCP61 controllers have the same interface as the CK804/MCP04..

--
Robert Hancock Saskatoon, SK, Canada
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