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authorMauro Carvalho Chehab <mchehab@redhat.com>2012-01-27 14:12:32 -0300
committerMauro Carvalho Chehab <mchehab@redhat.com>2012-05-28 19:10:57 -0300
commita7d7d2e1a07e3811dc49af2962c940fd8bbb6c8f (patch)
tree6c3ac39bf25fb7810668f57476c7b5872d5b418b /drivers/edac/i5100_edac.c
parent76e10d158efb6d4516018846f60c2ab5501900bc (diff)
downloadlinux-a7d7d2e1a07e3811dc49af2962c940fd8bbb6c8f.tar.bz2
edac: Create a dimm struct and move the labels into it
The way a DIMM is currently represented implies that they're linked into a per-csrow struct. However, some drivers don't see csrows, as they're ridden behind some chip like the AMB's on FBDIMM's, for example. This forced drivers to fake^Wvirtualize a csrow struct, and to create a mess under csrow/channel original's concept. Move the DIMM labels into a per-DIMM struct, and add there the real location of the socket, in terms of csrow/channel. Latter patches will modify the location to properly represent the memory architecture. All other drivers will use a per-csrow type of location. Some of those drivers will require a latter conversion, as they also fake the csrows internally. TODO: While this patch doesn't change the existing behavior, on csrows-based memory controllers, a csrow/channel pair points to a memory rank. There's a known bug at the EDAC core that allows having different labels for the same DIMM, if it has more than one rank. A latter patch is need to merge the several ranks for a DIMM into the same dimm_info struct, in order to avoid having different labels for the same DIMM. The edac_mc_alloc() will now contain a per-dimm initialization loop that will be changed by latter patches in order to match other types of memory architectures. Reviewed-by: Aristeu Rozanski <arozansk@redhat.com> Reviewed-by: Borislav Petkov <borislav.petkov@amd.com> Cc: Doug Thompson <norsk5@yahoo.com> Cc: Ranganathan Desikan <ravi@jetztechnologies.com> Cc: "Arvind R." <arvino55@gmail.com> Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/edac/i5100_edac.c')
-rw-r--r--drivers/edac/i5100_edac.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/drivers/edac/i5100_edac.c b/drivers/edac/i5100_edac.c
index d500749464ea..d55e5529734c 100644
--- a/drivers/edac/i5100_edac.c
+++ b/drivers/edac/i5100_edac.c
@@ -433,7 +433,7 @@ static void i5100_handle_ce(struct mem_ctl_info *mci,
"CE chan %d, bank %u, rank %u, syndrome 0x%lx, "
"cas %u, ras %u, csrow %u, label \"%s\": %s\n",
chan, bank, rank, syndrome, cas, ras,
- csrow, mci->csrows[csrow].channels[0].label, msg);
+ csrow, mci->csrows[csrow].channels[0].dimm->label, msg);
mci->ce_count++;
mci->csrows[csrow].ce_count++;
@@ -455,7 +455,7 @@ static void i5100_handle_ue(struct mem_ctl_info *mci,
"UE chan %d, bank %u, rank %u, syndrome 0x%lx, "
"cas %u, ras %u, csrow %u, label \"%s\": %s\n",
chan, bank, rank, syndrome, cas, ras,
- csrow, mci->csrows[csrow].channels[0].label, msg);
+ csrow, mci->csrows[csrow].channels[0].dimm->label, msg);
mci->ue_count++;
mci->csrows[csrow].ue_count++;
@@ -868,8 +868,8 @@ static void __devinit i5100_init_csrows(struct mem_ctl_info *mci)
mci->csrows[i].channels[0].chan_idx = 0;
mci->csrows[i].channels[0].ce_count = 0;
mci->csrows[i].channels[0].csrow = mci->csrows + i;
- snprintf(mci->csrows[i].channels[0].label,
- sizeof(mci->csrows[i].channels[0].label),
+ snprintf(mci->csrows[i].channels[0].dimm->label,
+ sizeof(mci->csrows[i].channels[0].dimm->label),
"DIMM%u", i5100_rank_to_slot(mci, chan, rank));
total_pages += npages;