Commit Graph

797 Commits

Author SHA1 Message Date
Mauro Carvalho Chehab c2078e4c91 Merge branch 'devel'
* devel: (33 commits)
  edac i5000, i5400: fix pointer math in i5000_get_mc_regs()
  edac: allow specifying the error count with fake_inject
  edac: add support for Calxeda highbank L2 cache ecc
  edac: add support for Calxeda highbank memory controller
  edac: create top-level debugfs directory
  sb_edac: properly handle error count
  i7core_edac: properly handle error count
  edac: edac_mc_handle_error(): add an error_count parameter
  edac: remove arch-specific parameter for the error handler
  amd64_edac: Don't pass driver name as an error parameter
  edac_mc: check for allocation failure in edac_mc_alloc()
  edac: Increase version to 3.0.0
  edac_mc: Cleanup per-dimm_info debug messages
  edac: Convert debugfX to edac_dbg(X,
  edac: Use more normal debugging macro style
  edac: Don't add __func__ or __FILE__ for debugf[0-9] msgs
  Edac: Add ABI Documentation for the new device nodes
  edac: move documentation ABI to ABI/testing/sysfs-devices-edac
  i7core_edac: change the mem allocation scheme to make Documentation/kobject.txt happy
  edac: change the mem allocation scheme to make Documentation/kobject.txt happy
  ...
2012-07-29 21:11:05 -03:00
Dan Carpenter f58d0dee07 edac i5000, i5400: fix pointer math in i5000_get_mc_regs()
"pvt->ambase" is a u64 datatype.  The intent here is to fill the first
half in the first call to pci_read_config_dword() and the other half in
the second.  Unfortunately the pointer math is wrong so we set the wrong
data.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-27 09:08:40 -03:00
Mauro Carvalho Chehab 38ced28b21 edac: allow specifying the error count with fake_inject
In order to test if the error counters are properly incremented,
add a way to specify how many errors were generated by a trace.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-27 09:01:30 -03:00
Rob Herring 69154d0698 edac: add support for Calxeda highbank L2 cache ecc
Add support for L2 ECC on Calxeda highbank platform.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-27 09:01:29 -03:00
Rob Herring a1b01edb27 edac: add support for Calxeda highbank memory controller
Add support for memory controller on Calxeda Highbank platforms. Highbank
platforms support a single 4GB mini-DIMM with 1-bit correction and 2-bit
detection.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-27 09:00:57 -03:00
Rob Herring e7930ba49e edac: create top-level debugfs directory
Create a single, top-level "edac" directory for debugfs. An "mc[0-N]"
directory is then created for each memory controller. Individual drivers
can create additional entries such as h/w error injection control.

Signed-off-by: Rob Herring <rob.herring@calxeda.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-12 12:15:49 -03:00
Mauro Carvalho Chehab c10538396b sb_edac: properly handle error count
Instead of reporting the error count via driver-specific details,
use the new way provided by edac_mc_handle_error.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-12 12:15:49 -03:00
Mauro Carvalho Chehab 00d1833927 i7core_edac: properly handle error count
Instead of generating a burst of errors or reporting the error
count via driver-specific details, use the new way provided by
edac_mc_handle_error.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-12 12:15:48 -03:00
Mauro Carvalho Chehab 9eb07a7fb8 edac: edac_mc_handle_error(): add an error_count parameter
In order to avoid loosing error events, it is desirable to group
error events together and generate a single trace for several identical
errors.

The trace API already allows reporting multiple errors. Change the
handle_error function to also allow that.

The changes at the drivers were made by this small script:

	$file .=$_ while (<>);
	$file =~ s/(edac_mc_handle_error)\s*\(([^\,]+)\,([^\,]+)\,/$1($2,$3, 1,/g;
	print $file;

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-12 12:15:47 -03:00
Mauro Carvalho Chehab 03f7eae80f edac: remove arch-specific parameter for the error handler
Remove the arch-dependent parameter, as it were not used,
as the MCE tracepoint weren't implemented. It probably doesn't
make sense to have an MCE-specific tracepoint, as this will
cost more bytes at the tracepoint, and tracepoint is not free.

The changes at the EDAC drivers were done by this small perl script:

	$file .=$_ while (<>);
	$file =~ s/(edac_mc_handle_error)\s*\(([^\;]+)\,([^\,\)]+)\s*\)/$1($2)/g;
	print $file;

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:52 -03:00
Mauro Carvalho Chehab 075f30901e amd64_edac: Don't pass driver name as an error parameter
The EDAC driver name doesn't help to handle EDAC errors. So,
remove it from the EDAC error messages, preserving only the
error_message.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:51 -03:00
Dan Carpenter 08a4a13690 edac_mc: check for allocation failure in edac_mc_alloc()
Add a check here for if kzalloc() failed.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:51 -03:00
Mauro Carvalho Chehab 5156a5f4e0 edac: Increase version to 3.0.0
There were lots of changes introduced to justify renaming it to
3.0.0:

  - EDAC core were redesigned to represent all types of
    memory controllers;

  - EDAC API were redesigned to properly represent the memory
    controller hierarchy;

  - a tracepoint-based API were added to report memory errors.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:50 -03:00
Mauro Carvalho Chehab 6e84d359b2 edac_mc: Cleanup per-dimm_info debug messages
The edac_mc_alloc() routine allocates one dimm_info device for all
possible memories, including the non-filled ones. The debug messages
there are somewhat confusing. So, cleans them, by moving the code
that prints the memory location to edac_mc, and using it on both
edac_mc_sysfs and edac_mc.

Also, only dumps information when DIMM/ranks are actually
filled.

After this patch, a dimm-based memory controller will print the debug
info as:

[ 1011.380027] EDAC DEBUG: edac_mc_dump_csrow: csrow->csrow_idx = 0
[ 1011.380029] EDAC DEBUG: edac_mc_dump_csrow:   csrow = ffff8801169be000
[ 1011.380031] EDAC DEBUG: edac_mc_dump_csrow:   csrow->first_page = 0x0
[ 1011.380032] EDAC DEBUG: edac_mc_dump_csrow:   csrow->last_page = 0x0
[ 1011.380034] EDAC DEBUG: edac_mc_dump_csrow:   csrow->page_mask = 0x0
[ 1011.380035] EDAC DEBUG: edac_mc_dump_csrow:   csrow->nr_channels = 3
[ 1011.380037] EDAC DEBUG: edac_mc_dump_csrow:   csrow->channels = ffff8801149c2840
[ 1011.380039] EDAC DEBUG: edac_mc_dump_csrow:   csrow->mci = ffff880117426000
[ 1011.380041] EDAC DEBUG: edac_mc_dump_channel:   channel->chan_idx = 0
[ 1011.380042] EDAC DEBUG: edac_mc_dump_channel:     channel = ffff8801149c2860
[ 1011.380044] EDAC DEBUG: edac_mc_dump_channel:     channel->csrow = ffff8801169be000
[ 1011.380046] EDAC DEBUG: edac_mc_dump_channel:     channel->dimm = ffff88010fe90400
...
[ 1011.380095] EDAC DEBUG: edac_mc_dump_dimm: dimm0: channel 0 slot 0 mapped as virtual row 0, chan 0
[ 1011.380097] EDAC DEBUG: edac_mc_dump_dimm:   dimm = ffff88010fe90400
[ 1011.380099] EDAC DEBUG: edac_mc_dump_dimm:   dimm->label = 'CPU#0Channel#0_DIMM#0'
[ 1011.380101] EDAC DEBUG: edac_mc_dump_dimm:   dimm->nr_pages = 0x40000
[ 1011.380103] EDAC DEBUG: edac_mc_dump_dimm:   dimm->grain = 8
[ 1011.380104] EDAC DEBUG: edac_mc_dump_dimm:   dimm->nr_pages = 0x40000
...

(a rank-based memory controller would print, instead of "dimm?", "rank?"
 on the above debug info)

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:49 -03:00
Joe Perches 956b9ba156 edac: Convert debugfX to edac_dbg(X,
Use a more common debugging style.

Remove __FILE__ uses, add missing newlines,
coalesce formats and align arguments.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:49 -03:00
Joe Perches 7e881856ee edac: Use more normal debugging macro style
Convert macros to a simpler style and enforce appropriate
format checking when not CONFIG_EDAC_DEBUG.

Use fmt and __VA_ARGS__, neaten macros.

Move some string arrays to the debugfx uses and remove the
now unnecessary CONFIG_EDAC_DEBUG variable block definitions.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:48 -03:00
Mauro Carvalho Chehab dd23cd6eb1 edac: Don't add __func__ or __FILE__ for debugf[0-9] msgs
The debug macro already adds that. Most of the work here was
made by this small script:

$f .=$_ while (<>);

$f =~ s/(debugf[0-9]\s*\(\s*)__FILE__\s*": /\1"/g;
$f =~ s/(debugf[0-9]\s*\(\s*)__FILE__\s*/\1/g;
$f =~ s/(debugf[0-9]\s*\(\s*)__FILE__\s*"MC: /\1"/g;

$f =~ s/(debugf[0-9]\s*\(\")\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+)__func__\s*\,\s*/\1\2/g;
$f =~ s/(debugf[0-9]\s*\(\")\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+),\s*__func__\s*\)/\1\2)/g;
$f =~ s/(debugf[0-9]\s*\(\"MC\:\s*)\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+)__func__\s*\,\s*/\1\2/g;
$f =~ s/(debugf[0-9]\s*\(\"MC\:\s*)\%s[\:\,\(\)]*\s*([^\"]*\s*[^\)]+),\s*__func__\s*\)/\1\2)/g;

$f =~ s/\"MC\: \\n\"/"MC:\\n"/g;

print $f;

After running the script, manual cleanups were done to fix it the remaining
places.

While here, removed the __LINE__ on most places, as it doesn't actually give
useful info on most places.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:47 -03:00
Mauro Carvalho Chehab 356f0a3086 i7core_edac: change the mem allocation scheme to make Documentation/kobject.txt happy
Kernel kobjects have rigid rules: each container object should be
dynamically allocated, and can't be allocated into a single kmalloc.

EDAC never obeyed this rule: it has a single malloc function that
allocates all needed data into a single kzalloc.

As this is not accepted anymore, change the allocation schema of the
EDAC *_info structs to enforce this Kernel standard.

Cc: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:46 -03:00
Mauro Carvalho Chehab de3910eb79 edac: change the mem allocation scheme to make Documentation/kobject.txt happy
Kernel kobjects have rigid rules: each container object should be
dynamically allocated, and can't be allocated into a single kmalloc.

EDAC never obeyed this rule: it has a single malloc function that
allocates all needed data into a single kzalloc.

As this is not accepted anymore, change the allocation schema of the
EDAC *_info structs to enforce this Kernel standard.

Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Greg K H <gregkh@linuxfoundation.org>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:45 -03:00
Mauro Carvalho Chehab e39f4ea9b0 edac: Only expose csrows/channels on legacy API if they're populated
This patch actually fixes a bug with the legacy API, where, at the
same csrow, some channels may have different DIMMs. This can happen
on FB-DIMM/RAMBUS and modern Intel controllers.

This is the case, for example, of Nehalem machines:

$ ./edac-ctl --layout
       +-----------------------------------+
       |                mc0                |
       | channel0  | channel1  | channel2  |
-------+-----------------------------------+
slot2: |     0 MB  |     0 MB  |     0 MB  |
slot1: |  1024 MB  |     0 MB  |     0 MB  |
slot0: |  1024 MB  |  1024 MB  |  1024 MB  |
-------+-----------------------------------+

Before this patch, non-filled memories were shown. Now, only what's
filled is there:

grep . /sys/devices/system/edac/mc/mc0/csrow*/ch?*
/sys/devices/system/edac/mc/mc0/csrow0/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow0/ch0_dimm_label:CPU#0Channel#0_DIMM#0
/sys/devices/system/edac/mc/mc0/csrow0/ch1_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow0/ch1_dimm_label:CPU#0Channel#0_DIMM#1
/sys/devices/system/edac/mc/mc0/csrow1/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow1/ch0_dimm_label:CPU#0Channel#1_DIMM#0
/sys/devices/system/edac/mc/mc0/csrow2/ch0_ce_count:0
/sys/devices/system/edac/mc/mc0/csrow2/ch0_dimm_label:CPU#0Channel#2_DIMM#0

Thanks-to: Aristeu Rozanski Filho <arozansk@redhat.com>
Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:44 -03:00
Mauro Carvalho Chehab fd63312dfe edac: Move grain/dtype/edac_type calculus to be out of channel loop
The 3e7bddc changeset (edac: move dimm properties to struct memset_info)
moved the calculus inside a loop. However, at those stuff are common to
all channels, on several drivers, it is better to put the calculus
outside the loop, to optimize the code.

Reported-by: Aristeu Rozanski Filho <arozansk@redhat.com>
Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:44 -03:00
Mauro Carvalho Chehab 452a6bf955 edac: Add debufs nodes to allow doing fake error inject
Sometimes, it is useful to have a mechanism that generates fake
errors, in order to test the EDAC core code, and the userspace
tools.

Provide such mechanism by adding a few debugfs nodes.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:43 -03:00
Mauro Carvalho Chehab 8ad6c78a69 edac: add a sysfs node to report the maximum location for the system
The userspace tools need to know what's the maximum location on each
system, as it helps to create nice maps showing how the memory was
filled at the system.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:43 -03:00
Mauro Carvalho Chehab 1997471069 edac: add a new per-dimm API and make the old per-virtual-rank API obsolete
The old EDAC API is broken. It only works fine for systems manufatured
before 2005 and for AMD 64. The reason is that it forces all memory
controller drivers to discover rank info.

Also, it doesn't allow grouping the several ranks into a DIMM.

So, what almost all modern drivers do is to create a fake virtual-rank
information, and use it to cheat the EDAC core to accept the driver.

While this works if the user has enough time to discover what DIMM slot
corresponds to each "virtual-rank" information, it prevents EDAC usage
for users with less available time. It also makes life hard for vendors
that may want to provide a table with their motherboards to the userspace
tool (edac-utils) as each driver has its own logic for the virtual
mapping.

So, the old API should be removed, in favor of a more flexible API that
allows newer drivers to not lie to the EDAC core.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Josh Boyer <jwboyer@redhat.com>
Cc: Hui Wang <jason77.wang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:42 -03:00
Mauro Carvalho Chehab d90c008963 edac: Get rid of the old kobj's from the edac mc code
Now that al users for the old kobj raw access are gone,
we can get rid of the legacy kobj-based structures and
data.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:41 -03:00
Mauro Carvalho Chehab 5c4cdb5ae7 i7core_edac: convert it to use struct device
Instead of relying on a complex logic inside the edac core to create
a "device tree-like" sysfs struct, just use device_add.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:41 -03:00
Mauro Carvalho Chehab c56087595f amd64_edac: convert sysfs logic to use struct device
Now that the EDAC core supports struct device, there's no sense
on having any logic at the EDAC core to simulate it. So, instead
of adding such logic there, change the logic at amd64_edac to
use it.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:40 -03:00
Mauro Carvalho Chehab ba004239e0 mpc85xx_edac: convert sysfs logic to use struct device
Now that the EDAC core supports struct device, there's no sense on
having any logic at the EDAC core to simulate it. So, instead of adding
such logic there, change the logic at mpc85xx_edac to use it

compile-tested only.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:39 -03:00
Mauro Carvalho Chehab 7a623c0390 edac: rewrite the sysfs code to use struct device
The EDAC subsystem uses the old struct sysdev approach,
creating all nodes using the raw sysfs API. This is bad,
as the API is deprecated.

As we'll be changing the EDAC API, let's first port the existing
code to struct device.

There's one drawback on this patch: driver-specific sysfs
nodes, used by mpc85xx_edac, amd64_edac and i7core_edac
 won't be created anymore. While it would be possible to
also port the device-specific code, that would mix kobj with
struct device, with is not recommended. Also, it is easier and nicer
to move the code to the drivers, instead, as the core can get rid
of some complex logic that just emulates what the device_add()
and device_create_file() already does.

The next patches will convert the driver-specific code to use
the device-specific calls. Then, the remaining bits of the old
sysfs API will be removed.

NOTE: a per-MC bus is required, otherwise devices with more than
one memory controller will hit a bug like the one below:

[  819.094946] EDAC DEBUG: find_mci_by_dev: find_mci_by_dev()
[  819.094948] EDAC DEBUG: edac_create_sysfs_mci_device: edac_create_sysfs_mci_device() idx=1
[  819.094952] EDAC DEBUG: edac_create_sysfs_mci_device: edac_create_sysfs_mci_device(): creating device mc1
[  819.094967] EDAC DEBUG: edac_create_sysfs_mci_device: edac_create_sysfs_mci_device creating dimm0, located at channel 0 slot 0
[  819.094984] ------------[ cut here ]------------
[  819.100142] WARNING: at fs/sysfs/dir.c:481 sysfs_add_one+0xc1/0xf0()
[  819.107282] Hardware name: S2600CP
[  819.111078] sysfs: cannot create duplicate filename '/bus/edac/devices/dimm0'
[  819.119062] Modules linked in: sb_edac(+) edac_core ip6table_filter ip6_tables ebtable_nat ebtables ipt_MASQUERADE iptable_nat nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_state nf_conntrack ipt_REJECT xt_CHECKSUM iptable_mangle iptable_filter ip_tables bridge stp llc sunrpc binfmt_misc dm_mirror dm_region_hash dm_log vhost_net macvtap macvlan tun kvm microcode pcspkr iTCO_wdt iTCO_vendor_support igb i2c_i801 i2c_core sg ioatdma dca sr_mod cdrom sd_mod crc_t10dif ahci libahci isci libsas libata scsi_transport_sas scsi_mod wmi dm_mod [last unloaded: scsi_wait_scan]
[  819.175748] Pid: 10902, comm: modprobe Not tainted 3.3.0-0.11.el7.v12.2.x86_64 #1
[  819.184113] Call Trace:
[  819.186868]  [<ffffffff8105adaf>] warn_slowpath_common+0x7f/0xc0
[  819.193573]  [<ffffffff8105aea6>] warn_slowpath_fmt+0x46/0x50
[  819.200000]  [<ffffffff811f53d1>] sysfs_add_one+0xc1/0xf0
[  819.206025]  [<ffffffff811f5cf5>] sysfs_do_create_link+0x135/0x220
[  819.212944]  [<ffffffff811f7023>] ? sysfs_create_group+0x13/0x20
[  819.219656]  [<ffffffff811f5df3>] sysfs_create_link+0x13/0x20
[  819.226109]  [<ffffffff813b04f6>] bus_add_device+0xe6/0x1b0
[  819.232350]  [<ffffffff813ae7cb>] device_add+0x2db/0x460
[  819.238300]  [<ffffffffa0325634>] edac_create_dimm_object+0x84/0xf0 [edac_core]
[  819.246460]  [<ffffffffa0325e18>] edac_create_sysfs_mci_device+0xe8/0x290 [edac_core]
[  819.255215]  [<ffffffffa0322e2a>] edac_mc_add_mc+0x5a/0x2c0 [edac_core]
[  819.262611]  [<ffffffffa03412df>] sbridge_register_mci+0x1bc/0x279 [sb_edac]
[  819.270493]  [<ffffffffa03417a3>] sbridge_probe+0xef/0x175 [sb_edac]
[  819.277630]  [<ffffffff813ba4e8>] ? pm_runtime_enable+0x58/0x90
[  819.284268]  [<ffffffff812f430c>] local_pci_probe+0x5c/0xd0
[  819.290508]  [<ffffffff812f5ba1>] __pci_device_probe+0xf1/0x100
[  819.297117]  [<ffffffff812f5bea>] pci_device_probe+0x3a/0x60
[  819.303457]  [<ffffffff813b1003>] really_probe+0x73/0x270
[  819.309496]  [<ffffffff813b138e>] driver_probe_device+0x4e/0xb0
[  819.316104]  [<ffffffff813b149b>] __driver_attach+0xab/0xb0
[  819.322337]  [<ffffffff813b13f0>] ? driver_probe_device+0xb0/0xb0
[  819.329151]  [<ffffffff813af5d6>] bus_for_each_dev+0x56/0x90
[  819.335489]  [<ffffffff813b0d7e>] driver_attach+0x1e/0x20
[  819.341534]  [<ffffffff813b0980>] bus_add_driver+0x1b0/0x2a0
[  819.347884]  [<ffffffffa0347000>] ? 0xffffffffa0346fff
[  819.353641]  [<ffffffff813b19f6>] driver_register+0x76/0x140
[  819.359980]  [<ffffffff8159f18b>] ? printk+0x51/0x53
[  819.365524]  [<ffffffffa0347000>] ? 0xffffffffa0346fff
[  819.371291]  [<ffffffff812f5896>] __pci_register_driver+0x56/0xd0
[  819.378096]  [<ffffffffa0347054>] sbridge_init+0x54/0x1000 [sb_edac]
[  819.385231]  [<ffffffff8100203f>] do_one_initcall+0x3f/0x170
[  819.391577]  [<ffffffff810bcd2e>] sys_init_module+0xbe/0x230
[  819.397926]  [<ffffffff815bb529>] system_call_fastpath+0x16/0x1b
[  819.404633] ---[ end trace 1654fdd39556689f ]---

This happens because the bus is not being properly initialized.
Instead of putting the memory sub-devices inside the memory controller,
it is putting everything under the same directory:

$ tree /sys/bus/edac/
/sys/bus/edac/
├── devices
│   ├── all_channel_counts -> ../../../devices/system/edac/mc/mc0/all_channel_counts
│   ├── csrow0 -> ../../../devices/system/edac/mc/mc0/csrow0
│   ├── csrow1 -> ../../../devices/system/edac/mc/mc0/csrow1
│   ├── csrow2 -> ../../../devices/system/edac/mc/mc0/csrow2
│   ├── dimm0 -> ../../../devices/system/edac/mc/mc0/dimm0
│   ├── dimm1 -> ../../../devices/system/edac/mc/mc0/dimm1
│   ├── dimm3 -> ../../../devices/system/edac/mc/mc0/dimm3
│   ├── dimm6 -> ../../../devices/system/edac/mc/mc0/dimm6
│   ├── inject_addrmatch -> ../../../devices/system/edac/mc/mc0/inject_addrmatch
│   ├── mc -> ../../../devices/system/edac/mc
│   └── mc0 -> ../../../devices/system/edac/mc/mc0
├── drivers
├── drivers_autoprobe
├── drivers_probe
└── uevent

On a multi-memory controller system, the names "csrow%d" and "dimm%d"
should be under "mc%d", and not at the main hierarchy level.

So, we need to create a per-MC bus, in order to have its own namespace.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Greg K H <gregkh@linuxfoundation.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 13:23:30 -03:00
Chris Metcalf 8447c4d15e edac: Do alignment logic properly in edac_align_ptr()
The logic was checking the sizeof the structure being allocated to
determine whether an alignment fixup was required.  This isn't right;
what we actually care about is the alignment of the actual pointer that's
about to be returned.  This became an issue recently because struct
edac_mc_layer has a size that is not zero modulo eight, so we were
taking the correctly-aligned pointer and forcing it to be misaligned.
On Tile this caused an alignment exception.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 12:43:16 -03:00
Mauro Carvalho Chehab fd687502dc edac: Rename the parent dev to pdev
As EDAC doesn't use struct device itself, it created a parent dev
pointer called as "pdev".  Now that we'll be converting it to use
struct device, instead of struct devsys, this needs to be fixed.

No functional changes.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: Michal Marek <mmarek@suse.cz>
Cc: Jiri Kosina <jkosina@suse.cz>
Cc: Joe Perches <joe@perches.com>
Cc: Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Hitoshi Mitake <h.mitake@gmail.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Shaohui Xie <Shaohui.Xie@freescale.com>
Cc: Josh Boyer <jwboyer@gmail.com>
Cc: linuxppc-dev@lists.ozlabs.org
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:56:06 -03:00
Mauro Carvalho Chehab 53f2d02898 RAS: Add a tracepoint for reporting memory controller events
Add a new tracepoint-based hardware events report method for
reporting Memory Controller events.

Part of the description bellow is shamelessly copied from Tony
Luck's notes about the Hardware Error BoF during LPC 2010 [1].
Tony, thanks for your notes and discussions to generate the
h/w error reporting requirements.

[1] http://lwn.net/Articles/416669/

    We have several subsystems & methods for reporting hardware errors:

    1) EDAC ("Error Detection and Correction").  In its original form
    this consisted of a platform specific driver that read topology
    information and error counts from chipset registers and reported
    the results via a sysfs interface.

    2) mcelog - x86 specific decoding of machine check bank registers
    reporting in binary form via /dev/mcelog. Recent additions make use
    of the APEI extensions that were documented in version 4.0a of the
    ACPI specification to acquire more information about errors without
    having to rely reading chipset registers directly. A user level
    programs decodes into somewhat human readable format.

    3) drivers/edac/mce_amd.c - this driver hooks into the mcelog path and
    decodes errors reported via machine check bank registers in AMD
    processors to the console log using printk();

    Each of these mechanisms has a band of followers ... and none
    of them appear to meet all the needs of all users.

As part of a RAS subsystem, let's encapsulate the memory error hardware
events into a trace facility.

The tracepoint printk will be displayed like:

mc_event: [quant] (Corrected|Uncorrected|Fatal) error:[error msg] on [label] ([location] [edac_mc detail] [driver_detail]

Where:
       	[quant] is the quantity of errors
	[error msg] is the driver-specific error message
		    (e. g. "memory read", "bus error", ...);
	[location] is the location in terms of memory controller and
		   branch/channel/slot, channel/slot or csrow/channel;
	[label] is the memory stick label;
	[edac_mc detail] describes the address location of the error
			 and the syndrome;
	[driver detail] is driver-specifig error message details,
			when needed/provided (e. g. "area:DMA", ...)

For example:

mc_event: 1 Corrected error:memory read on memory stick DIMM_1A (mc:0 location:0:0:0 page:0x586b6e offset:0xa66 grain:32 syndrome:0x0 area:DMA)

Of course, any userspace tools meant to handle errors should not parse
the above data. They should, instead, use the binary fields provided by
the tracepoint, mapping them directly into their Management Information
Base.

NOTE: The original patch was providing an additional mechanism for
MCA-based trace events that also contained MCA error register data.
However, as no agreement was reached so far for the MCA-based trace
events, for now, let's add events only for memory errors.
A latter patch is planned to change the tracepoint, for those types
of event.

Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:55:52 -03:00
Kim Phillips b9bc5ddb1b mpc85xx_edac: fix error: too few arguments to function 'edac_mc_alloc'
commit ca0907b "edac: Remove the legacy EDAC ABI" broke mpc85xx_edac
in the following manner:

mpc85xx_edac.c:983:35: error: too few arguments to function 'edac_mc_alloc'

this patch puts back the missing 'layers' argument.

[mchehab@redhat.com: As Ben sent a similar fix, I added his SOB on this patch]
Signed-off-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:49:51 -03:00
Chen Gong 2cbb587d3b edac: fix the error about memory type detection on SandyBridge
On SandyBridge, DDRIOA(Dev: 17 Func: 0 Offset: 328) is used
to detect whether DIMM is RDIMM/LRDIMM, not TA(Dev: 15 Func: 0).

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:49:51 -03:00
Chen Gong e35fca4791 edac: avoid mce decoding crash after edac driver unloaded
Some edac drivers register themselves as mce decoders via
notifier_chain. But in current notifier_chain implementation logic,
it doesn't accept same notifier registered twice. If so, it will be
wrong when adding/removing the element from the list. For example,
on one SandyBridge platform, remove module sb_edac and then trigger
one error, it will hit oops because it has no mce decoder registered
but related notifier_chain still points to an invalid callback
function. Here is an example:

Call Trace:
 [<ffffffff8150ef6a>] atomic_notifier_call_chain+0x1a/0x20
 [<ffffffff8102b936>] mce_log+0x46/0x180
 [<ffffffff8102eaea>] apei_mce_report_mem_error+0x4a/0x60
 [<ffffffff812e19d2>] ghes_do_proc+0x192/0x210
 [<ffffffff812e2066>] ghes_proc+0x46/0x70
 [<ffffffff812e20d8>] ghes_notify_sci+0x48/0x80
 [<ffffffff8150ef05>] notifier_call_chain+0x55/0x80
 [<ffffffff81076f1a>] __blocking_notifier_call_chain+0x5a/0x80
 [<ffffffff812aea11>] ? acpi_os_wait_events_complete+0x23/0x23
 [<ffffffff81076f56>] blocking_notifier_call_chain+0x16/0x20
 [<ffffffff812ddc4d>] acpi_hed_notify+0x19/0x1b
 [<ffffffff812b16bd>] acpi_device_notify+0x19/0x1b
 [<ffffffff812beb38>] acpi_ev_notify_dispatch+0x67/0x7f
 [<ffffffff812aea3a>] acpi_os_execute_deferred+0x29/0x36
 [<ffffffff81069dc2>] process_one_work+0x132/0x450
 [<ffffffff8106bbcb>] worker_thread+0x17b/0x3c0
 [<ffffffff8106ba50>] ? manage_workers+0x120/0x120
 [<ffffffff81070aee>] kthread+0x9e/0xb0
 [<ffffffff81514724>] kernel_thread_helper+0x4/0x10
 [<ffffffff81070a50>] ? kthread_freezable_should_stop+0x70/0x70
 [<ffffffff81514720>] ? gs_change+0x13/0x13
Code: f3 49 89 d4 45 85 ed 4d 89 c6 48 8b 0f 74 48 48 85 c9 75 17 eb 41
0f 1f 80 00 00 00 00 41 83 ed 01 4c 89 f9 74 22 4d 85 ff 74 1d <4c> 8b
79 08 4c 89 e2 48 89 de 48 89 cf ff 11 4d 85 f6 74 04 41
RIP  [<ffffffff8150eef6>] notifier_call_chain+0x46/0x80
 RSP <ffff88042868fb20>
CR2: ffffffffa01af838
---[ end trace 0100930068e73e6f ]---
BUG: unable to handle kernel paging request at fffffffffffffff8
IP: [<ffffffff810705b0>] kthread_data+0x10/0x20
PGD 1a0d067 PUD 1a0e067 PMD 0
Oops: 0000 [#2] SMP

Only i7core_edac and sb_edac have such issues because they have more
than one memory controller which means they have to register mce
decoder many times.

Cc: <stable@vger.kernel.org> # 3.2 and upper
Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-06-11 11:49:51 -03:00
H. Peter Anvin bbd771474e Merge branch 'x86/trampoline' into x86/urgent
x86/trampoline contains an urgent commit which is necessarily on a
newer baseline.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
2012-05-30 12:11:32 -07:00
Ingo Molnar 403e1c5b74 Merge branch 'x86/mce' into x86/urgent
Merge in these fixlets.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2012-05-30 14:12:06 +02:00
Linus Torvalds 87a5af24e5 Merge git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac
Pull EDAC internal API changes from Mauro Carvalho Chehab:
 "This changeset is the first part of a series of patches that fixes the
  EDAC sybsystem.  On this set, it changes the Kernel EDAC API in order
  to properly represent the Intel i3/i5/i7, Xeon 3xxx/5xxx/7xxx, and
  Intel E5-xxxx memory controllers.

  The EDAC core used to assume that:

       - the DRAM chip select pin is directly accessed by the memory
         controller

       - when multiple channels are used, they're all filled with the
         same type of memory.

  None of the above premises is true on Intel memory controllers since
  2002, when RAMBUS and FB-DIMMs were introduced, and Advanced Memory
  Buffer or by some similar technologies hides the direct access to the
  DRAM pins.

  So, the existing drivers for those chipsets had to lie to the EDAC
  core, in general telling that just one channel is filled.  That
  produces some hard to understand error messages like:

       EDAC MC0: CE row 3, channel 0, label "DIMM1": 1 Unknown error(s): memory read error on FATAL area : cpu=0 Err=0008:00c2 (ch=2), addr = 0xad1f73480 => socket=0, Channel=0(mask=2), rank=1

  The location information there (row3 channel 0) is completely bogus:
  it has no physical meaning, and are just some random values that the
  driver uses to talk with the EDAC core.  The error actually happened
  at CPU socket 0, channel 0, slot 1, but this is not reported anywhere,
  as the EDAC core doesn't know anything about the memory layout.  So,
  only advanced users that know how the EDAC driver works and that tests
  their systems to see how DIMMs are mapped can actually benefit for
  such error logs.

  This patch series fixes the error report logic, in order to allow the
  EDAC to expose the memory architecture used by them to the EDAC core.
  So, as the EDAC core now understands how the memory is organized, it
  can provide an useful report:

       EDAC MC0: CE memory read error on DIMM1 (channel:0 slot:1 page:0x364b1b offset:0x600 grain:32 syndrome:0x0 - count:1 area:DRAM err_code:0001:0090 socket:0 channel_mask:1 rank:4)

  The location of the DIMM where the error happened is reported by "MC0"
  (cpu socket #0), at "channel:0 slot:1" location, and matches the
  physical location of the DIMM.

  There are two remaining issues not covered by this patch series:

       - The EDAC sysfs API will still report bogus values.  So,
         userspace tools like edac-utils will still use the bogus data;

       - Add a new tracepoint-based way to get the binary information
         about the errors.

  Those are on a second series of patches (also at -next), but will
  probably miss the train for 3.5, due to the slow review process."

Fix up trivial conflict (due to spelling correction of removed code) in
drivers/edac/edac_device.c

* git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-edac: (42 commits)
  i7core: fix ranks information at the per-channel struct
  i5000: Fix the fatal error handling
  i5100_edac: Fix a warning when compiled with 32 bits
  i82975x_edac: Test nr_pages earlier to save a few CPU cycles
  e752x_edac: provide more info about how DIMMS/ranks are mapped
  i5000_edac: Fix the logic that retrieves memory information
  i5400_edac: improve debug messages to better represent the filled memory
  edac: Cleanup the logs for i7core and sb edac drivers
  edac: Initialize the dimm label with the known information
  edac: Remove the legacy EDAC ABI
  x38_edac: convert driver to use the new edac ABI
  tile_edac: convert driver to use the new edac ABI
  sb_edac: convert driver to use the new edac ABI
  r82600_edac: convert driver to use the new edac ABI
  ppc4xx_edac: convert driver to use the new edac ABI
  pasemi_edac: convert driver to use the new edac ABI
  mv64x60_edac: convert driver to use the new edac ABI
  mpc85xx_edac: convert driver to use the new edac ABI
  i82975x_edac: convert driver to use the new edac ABI
  i82875p_edac: convert driver to use the new edac ABI
  ...
2012-05-29 18:32:37 -07:00
Mauro Carvalho Chehab 0bf09e829d i7core: fix ranks information at the per-channel struct
There is a flag at the per-channel struct that indicates if there are
any 4R dimm on it. The way the presence of this flag were reported
is not ok, as it might give the false idea that the channel were filled
with 2R memories:

[  580.588701] EDAC DEBUG: get_dimm_config: Ch1 phy rd1, wr1 (0x063f7431): 2 ranks, UDIMMs
[  580.588704] EDAC DEBUG: get_dimm_config: 	dimm 0 1024 Mb offset: 0, bank: 8, rank: 1, row: 0x4000, col: 0x400

(in this case, just one 1R memory is filled on channel 1)

So, use a better way to represent the per-channel ranks information.
After the patch, it will show:

[ 2002.233978] EDAC DEBUG: get_dimm_config: Ch0 phy rd0, wr0 (0x063f7431): UDIMMs
[ 2002.233982] EDAC DEBUG: get_dimm_config: 	dimm 0 1024 Mb offset: 0, bank: 8, rank: 1, row: 0x4000, col: 0x400
[ 2002.233988] EDAC DEBUG: get_dimm_config: 	dimm 1 1024 Mb offset: 4, bank: 8, rank: 1, row: 0x4000, col: 0x400

(in this case, there isn't any 4R memories)

Reported-by: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:55 -03:00
Mauro Carvalho Chehab 486dfb1638 i5000: Fix the fatal error handling
The fatal error channel bits point to a single channel, and not
to a range of channels. Fix the code to properly report it,
instead of printing messages like:
	kernel: EDAC MC0: INTERNAL ERROR: channel-b out of range (4 >= 4)

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:54 -03:00
Mauro Carvalho Chehab 9f70d08a4c i5100_edac: Fix a warning when compiled with 32 bits
drivers/edac/i5100_edac.c: In function ‘i5100_init_csrows’:
drivers/edac/i5100_edac.c:862:3: warning: format ‘%zd’ expects argument of type ‘signed size_t’, but argument 5 has type ‘long unsigned int’ [-Wformat]

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: "Niklas Söderlund" <niklas.soderlund@ericsson.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:54 -03:00
Mauro Carvalho Chehab 36683aab90 i82975x_edac: Test nr_pages earlier to save a few CPU cycles
Avoid test nr_pages twice, and initializing some data that won't
be used.

Cleanup patch only.

Reported-by: Aristeu Rozanski Filho <arozansk@redhat.com>
Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:53 -03:00
Mauro Carvalho Chehab 805afb6997 e752x_edac: provide more info about how DIMMS/ranks are mapped
No funtional changes here. Only the comments got updated.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:53 -03:00
Mauro Carvalho Chehab 64e1fdaf55 i5000_edac: Fix the logic that retrieves memory information
The logic there is broken: it basically creates two csrows for
each DIMM and assumes that all DIMM's are dual rank. Only one of
the csrows will contain the entire DIMM size. If single rank
memories are found, they'll be marked with 0 bytes.

The check if the AMB is present were also wrong.

Yet, as the error reports don't use the memory size in order to
credit an error to the right DIMM, that part of the driver seems
to work. That's why probably nobody detected the issue yet.

After this patch, the memory layout is now properly reported,
when debug mode is enabled, and the number of ranks per dimm is
now shown:

calculate_dimm_size: ----------------------------------------------------------
calculate_dimm_size: slot  3       0 MB   |    0 MB   |    0 MB   |    0 MB   |
calculate_dimm_size: slot  2       0 MB   |    0 MB   |    0 MB   |    0 MB   |
calculate_dimm_size: ----------------------------------------------------------
calculate_dimm_size: slot  1       0 MB   |    0 MB   |    0 MB   |    0 MB   |
calculate_dimm_size: slot  0     512 MB 1R|  512 MB 1R|  512 MB 1R|  512 MB 1R|
calculate_dimm_size: ----------------------------------------------------------
calculate_dimm_size:            channel 0 | channel 1 | channel 2 | channel 3 |
calculate_dimm_size:                   branch 0       |        branch 1       |

(1R above means that all memories on my test machine are single-ranked)

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:52 -03:00
Mauro Carvalho Chehab 68d086f89b i5400_edac: improve debug messages to better represent the filled memory
Improves the debug output message, in order to better represent the
memory controller hierarchy, when outputing the debug messages.

No functional changes when debug is disabled.

Reviewed-by: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:51 -03:00
Mauro Carvalho Chehab e17a2f42a4 edac: Cleanup the logs for i7core and sb edac drivers
Remove some information that it is duplicated at the MCE log,
and don't have much usage for the error. Those data will be
added again, when creating a trace function that outputs both
memory errors and MCE fields.

Cc: Aristeu Rozanski <arozansk@redhat.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:51 -03:00
Mauro Carvalho Chehab 5926ff502f edac: Initialize the dimm label with the known information
While userspace doesn't fill the dimm labels, add there the dimm location,
as described by the used memory model. This could eventually match what
is described at the dmidecode, making easier for people to identify the
memory.

For example, on an Intel motherboard where the DMI table is reliable,
the first memory stick is described as:

Memory Device
	Array Handle: 0x0029
	Error Information Handle: Not Provided
	Total Width: 64 bits
	Data Width: 64 bits
	Size: 2048 MB
	Form Factor: DIMM
	Set: 1
	Locator: A1_DIMM0
	Bank Locator: A1_Node0_Channel0_Dimm0
	Type: <OUT OF SPEC>
	Type Detail: Synchronous
	Speed: 800 MHz
	Manufacturer: A1_Manufacturer0
	Serial Number: A1_SerNum0
	Asset Tag: A1_AssetTagNum0
	Part Number: A1_PartNum0

The memory named as "A1_DIMM0" is physically located at the first
memory controller (node 0), at channel 0, dimm slot 0.

After this patch, the memory label will be filled with:
	/sys/devices/system/edac/mc/csrow0/ch0_dimm_label:mc#0channel#0slot#0

And (after the new EDAC API patches) as:
	/sys/devices/system/edac/mc/mc0/dimm0/dimm_label:mc#0channel#0slot#0

So, even if the memory label is not initialized on userspace, an useful
information with the error location is filled there, expecially since
several systems/motherboards are provided with enough info to map from
channel/slot (or branch/channel/slot) into the DIMM label. So, letting the
EDAC core fill it by default is a good thing.

It should noticed that, as the label filling happens at the
edac_mc_alloc(), drivers can override it to better describe the memories
(and some actually do it).

Cc: Aristeu Rozanski <arozansk@redhat.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:50 -03:00
Mauro Carvalho Chehab ca0907b9e4 edac: Remove the legacy EDAC ABI
Now that all drivers got converted to use the new ABI, we can
drop the old one.

Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:50 -03:00
Mauro Carvalho Chehab e2acc357ee x38_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:49 -03:00
Mauro Carvalho Chehab 40467db770 tile_edac: convert driver to use the new edac ABI
The legacy edac ABI is going to be removed. Port the driver to use
and benefit from the new API functionality.

Acked-by: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:13:48 -03:00