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| author |   Peter Tyser <ptyser@xes-inc.com> | 2010-03-10 15:23:15 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-03-12 15:52:40 -0800 |
| commit | 8004fd2ad6042ae24d3913cf5089909781db3a25 (patch) | |
| tree | 420b2c1fc2241f2f3154a63fd89097c0d2778bb6 /Documentation/DMA-API.txt | |
| parent | edac: e752x fsb ecc (diff) | |
| download | linux-dev-8004fd2ad6042ae24d3913cf5089909781db3a25.tar.xz linux-dev-8004fd2ad6042ae24d3913cf5089909781db3a25.zip | |
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=1204835866.25206.70.camel@localhost.localdomain&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 <ptyser@xes-inc.com>
Signed-off-by: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/DMA-API.txt')
0 files changed, 0 insertions, 0 deletions