]> Git Repo - linux.git/commit
edac: e752x: add dram scrubbing support
authorPeter Tyser <[email protected]>
Wed, 10 Mar 2010 23:23:15 +0000 (15:23 -0800)
committerLinus Torvalds <[email protected]>
Fri, 12 Mar 2010 23:52:40 +0000 (15:52 -0800)
commit8004fd2ad6042ae24d3913cf5089909781db3a25
tree420b2c1fc2241f2f3154a63fd89097c0d2778bb6
parent8de5c1a165be5624a1003ce17877299e04b2afd6
edac: e752x: add dram scrubbing support

Add support to scrub DRAM using the e752x integrated memory scrubbing
engine.  The e7320/7520/e7525 chipsets support scrubbing at one rate while
the i3100 chipset supports a normal and fast rate.

A similar patch was originally sent back in 2008:
http://sourceforge.net/mailarchive/forum.php?thread_name=1204835866[email protected]&forum_name=bluesmoke-devel

This version has the following updates:
- Use 16-bit PCI config cycles to access MCHSCRB register
    e7320/7520/e7525 docs say register is 16bits wide, i3100 says 8.  I
    tested 16bits on the i3100 to be safe.
- Recalcuate and round actual scrub rates

The changes have been tested on an i3100-based board.

Signed-off-by: Peter Tyser <[email protected]>
Signed-off-by: Doug Thompson <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
drivers/edac/e752x_edac.c
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