diff options
| -rw-r--r-- | drivers/edac/e752x_edac.c | 26 |
1 files changed, 22 insertions, 4 deletions
diff --git a/drivers/edac/e752x_edac.c b/drivers/edac/e752x_edac.c index d28a6851bb18..3186512c9739 100644 --- a/drivers/edac/e752x_edac.c +++ b/drivers/edac/e752x_edac.c @@ -4,10 +4,11 @@ * This file may be distributed under the terms of the * GNU General Public License. * - * See "enum e752x_chips" below for supported chipsets + * Implement support for the e7520, E7525, e7320 and i3100 memory controllers. * - * Datasheet: + * Datasheets: * http://www.intel.in/content/www/in/en/chipsets/e7525-memory-controller-hub-datasheet.html + * ftp://download.intel.com/design/intarch/datashts/31345803.pdf * * Written by Tom Zimmerman * @@ -16,8 +17,6 @@ * Wang Zhenyu at intel.com * Dave Jiang at mvista.com * - * $Id: edac_e752x.c,v 1.5.2.11 2005/10/05 00:43:44 dsp_llnl Exp $ - * */ #include <linux/module.h> @@ -190,6 +189,25 @@ enum e752x_chips { I3100 = 3 }; +/* + * Those chips Support single-rank and dual-rank memories only. + * + * On e752x chips, the odd rows are present only on dual-rank memories. + * Dividing the rank by two will provide the dimm# + * + * i3100 MC has a different mapping: it supports only 4 ranks. + * + * The mapping is (from 1 to n): + * slot single-ranked double-ranked + * dimm #1 -> rank #4 NA + * dimm #2 -> rank #3 NA + * dimm #3 -> rank #2 Ranks 2 and 3 + * dimm #4 -> rank $1 Ranks 1 and 4 + * + * FIXME: The current mapping for i3100 considers that it supports up to 8 + * ranks/chanel, but datasheet says that the MC supports only 4 ranks. + */ + struct e752x_pvt { struct pci_dev *bridge_ck; struct pci_dev *dev_d0f0; |