From c0d121720220584bba2876b032e58a076b843fa1 Mon Sep 17 00:00:00 2001 From: Dave Jiang Date: Thu, 19 Jul 2007 01:49:46 -0700 Subject: drivers/edac: add new nmi rescan Provides a way for NMI reported errors on x86 to notify the EDAC subsystem pending ECC errors by writing to a software state variable. Here's the reworked patch. I added an EDAC stub to the kernel so we can have variables that are in the kernel even if EDAC is a module. I also implemented the idea of using the chip driver to select error detection mode via module parameter and eliminate the kernel compile option. Please review/test. Thx! Also, I only made changes to some of the chipset drivers since I am unfamiliar with the other ones. We can add similar changes as we go. Signed-off-by: Dave Jiang Signed-off-by: Douglas Thompson Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/edac/e7xxx_edac.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/edac/e7xxx_edac.c') diff --git a/drivers/edac/e7xxx_edac.c b/drivers/edac/e7xxx_edac.c index 310d91b41c96..0827b9a7b386 100644 --- a/drivers/edac/e7xxx_edac.c +++ b/drivers/edac/e7xxx_edac.c @@ -27,6 +27,7 @@ #include #include #include +#include #include "edac_mc.h" #define E7XXX_REVISION " Ver: 2.0.1 " __DATE__ @@ -419,6 +420,17 @@ static int e7xxx_probe1(struct pci_dev *pdev, int dev_idx) struct e7xxx_error_info discard; debugf0("%s(): mci\n", __func__); + + /* make sure error reporting method is sane */ + switch(edac_op_state) { + case EDAC_OPSTATE_POLL: + case EDAC_OPSTATE_NMI: + break; + default: + edac_op_state = EDAC_OPSTATE_POLL; + break; + } + pci_read_config_dword(pdev, E7XXX_DRC, &drc); drc_chan = dual_channel_active(drc, dev_idx); @@ -565,3 +577,5 @@ MODULE_LICENSE("GPL"); MODULE_AUTHOR("Linux Networx (http://lnxi.com) Thayne Harbaugh et al\n" "Based on.work by Dan Hollis et al"); MODULE_DESCRIPTION("MC support for Intel e7xxx memory controllers"); +module_param(edac_op_state, int, 0444); +MODULE_PARM_DESC(edac_op_state, "EDAC Error Reporting state: 0=Poll,1=NMI"); -- cgit v1.2.3