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author | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-01-27 18:12:32 +0100 |
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committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2012-05-29 00:10:57 +0200 |
commit | a7d7d2e1a07e3811dc49af2962c940fd8bbb6c8f (patch) | |
tree | 6c3ac39bf25fb7810668f57476c7b5872d5b418b /drivers/edac/i5100_edac.c | |
parent | Linux 3.4 (diff) | |
download | linux-a7d7d2e1a07e3811dc49af2962c940fd8bbb6c8f.tar.xz linux-a7d7d2e1a07e3811dc49af2962c940fd8bbb6c8f.zip |
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.c | 8 |
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; |