Commit graph

208 commits

Author SHA1 Message Date
Luis R. Rodriguez 735c0f8f12 amd64_edac: enforce synchronous probe
While testing asynchronous PCI probe on this driver I noticed it failed
because the driver checks if any of the PCI devices have been bound to
the driver after registering it, which obviously does not work if
probing is asynchronous.

While there are patches and discussions on how the driver should behave
are ongoing, let's enforce synchronous probe for this driver for now.

Reviewed-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2015-05-20 00:25:25 -07:00
Borislav Petkov 2ec591ac74 EDAC, amd64_edac: Get rid of per-node driver instances
... and do the proper thing using EDAC core facilities.

Cc: Daniel J Blueman <daniel@numascale.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2015-02-23 13:16:01 +01:00
Takashi Iwai e339f1ec97 EDAC: amd64: Use static attribute groups
Instead of calling device_create_file() and device_remove_file()
manually, pass the static attribute groups with the new
edac_mc_add_mc_with_groups(). The conditional creation of inject sysfs
files is done by a proper is_visible callback.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: http://lkml.kernel.org/r/1423046938-18111-4-git-send-email-tiwai@suse.de
Signed-off-by: Borislav Petkov <bp@suse.de>
2015-02-23 13:08:09 +01:00
Daniel J Blueman 0c510cc83b EDAC, amd64_edac: Prevent OOPS with >16 memory controllers
When DRAM errors occur on memory controllers after EDAC_MAX_MCS (16),
the kernel fatally dereferences unallocated structures, see splat below;
this occurs on at least NumaConnect systems.

Fix by checking if a memory controller info structure was found.

BUG: unable to handle kernel NULL pointer dereference at 0000000000000320
IP: [<ffffffff819f714f>] decode_bus_error+0x2f/0x2b0
PGD 2f8b5a3067 PUD 2f8b5a2067 PMD 0
Oops: 0000 [#2] SMP
Modules linked in:
CPU: 224 PID: 11930 Comm: stream_c.exe.gn Tainted: G   D    3.19.0 #1
Hardware name: Supermicro H8QGL/H8QGL, BIOS 3.5b    01/28/2015
task: ffff8807dbfb8c00 ti: ffff8807dd16c000 task.ti: ffff8807dd16c000
RIP: 0010:[<ffffffff819f714f>] [<ffffffff819f714f>] decode_bus_error+0x2f/0x2b0
RSP: 0000:ffff8907dfc03c48 EFLAGS: 00010297
RAX: 0000000000000001 RBX: 9c67400010080a13 RCX: 0000000000001dc6
RDX: 000000001dc61dc6 RSI: ffff8907dfc03df0 RDI: 000000000000001c
RBP: ffff8907dfc03ce8 R08: 0000000000000000 R09: 0000000000000022
R10: ffff891fffa30380 R11: 00000000001cfc90 R12: 0000000000000008
R13: 0000000000000000 R14: 000000000000001c R15: 00009c6740001000
FS: 00007fa97ee18700(0000) GS:ffff8907dfc00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000320 CR3: 0000003f889b8000 CR4: 00000000000407e0
Stack:
 0000000000000000 ffff8907dfc03df0 0000000000000008 9c67400010080a13
 000000000000001c 00009c6740001000 ffff8907dfc03c88 ffffffff810e4f9a
 ffff8907dfc03ce8 ffffffff81b375b9 0000000000000000 0000000000000010
Call Trace:
 <IRQ>
 ? vprintk_default
 ? printk
 amd_decode_mce
 notifier_call_chain
 atomic_notifier_call_chain
 mce_log
 machine_check_poll
 mce_timer_fn
 ? mce_cpu_restart
 call_timer_fn.isra.29
 run_timer_softirq
 __do_softirq
 irq_exit
 smp_apic_timer_interrupt
 apic_timer_interrupt
 <EOI>
 ? down_read_trylock
 __do_page_fault
 ? __schedule
 do_page_fault
 page_fault

Signed-off-by: Daniel J Blueman <daniel@numascale.com>
Link: http://lkml.kernel.org/r/1424144078-24589-1-git-send-email-daniel@numascale.com
Cc: stable@vger.kernel.org
[ Boris: massage commit message ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2015-02-17 10:32:12 +01:00
Tomasz Pala f5b10c45ef amd64_edac: Build module on x86-32
By popular demand, enable amd64_edac on 32-bit too.

Boris:
 - update Kconfig text.
 - add a warning on load which states that 32-bit configurations are unsupported.

Signed-off-by: Tomasz Pala <gotar@polanet.pl>
Link: http://lkml.kernel.org/r/20141102102212.GA7034@polanet.pl
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-11-05 15:54:34 +01:00
Aravind Gopalakrishnan a597d2a5d9 amd64_edac: Add F15h M60h support
This patch adds support for ECC error decoding for F15h M60h processor.
Aside from the usual changes, the patch adds support for some new features
in the processor:
 - DDR4(unbuffered, registered); LRDIMM DDR3 support
   - relevant debug messages have been modified/added to report these
     memory types
 - new dbam_to_cs mappers
   - if (F15h M60h && LRDIMM); we need a 'multiplier' value to find
     cs_size. This multiplier value is obtained from the per-dimm
     DCSM register. So, change the interface to accept a 'cs_mask_nr'
     value to facilitate this calculation
 - switch-casing determine_memory_type()
   - done to cleanse the function of too many if-else statements
     and improve readability
   - This is now called early in read_mc_regs() to cache dram_type

Misc cleanup:
 - amd64_pci_table[] is condensed by using PCI_VDEVICE macro.

Testing details:
Tested the patch by injecting 'ECC' type errors using mce_amd_inj
and error decoding works fine.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/1414617483-4941-1-git-send-email-Aravind.Gopalakrishnan@amd.com
[ Boris: determine_memory_type() cleanups ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-10-30 13:42:48 +01:00
Aravind Gopalakrishnan 7981a28f1a amd64_edac: Modify usage of amd64_read_dct_pci_cfg()
Rationale behind this change:
 - F2x1xx addresses were stopped from being mapped explicitly to DCT1
   from F15h (OR) onwards. They use _dct[0:1] mechanism to access the
   registers. So we should move away from using address ranges to select
   DCT for these families.
 - On newer processors, the address ranges used to indicate DCT1 (0x140,
   0x1a0) have different meanings than what is assumed currently.

Changes introduced:
 - amd64_read_dct_pci_cfg() now takes in dct value and uses it for
   'selecting the dct'
 - Update usage of the function. Keep in mind that different families
   have specific handling requirements
 - Remove [k8|f10]_read_dct_pci_cfg() as they don't do much different
   from amd64_read_pci_cfg()
   - Move the k8 specific check to amd64_read_pci_cfg
 - Remove f15_read_dct_pci_cfg() and move logic to amd64_read_dct_pci_cfg()
 - Remove now needless .read_dct_pci_cfg

Testing:
 - Tested on Fam 10h; Fam15h Models: 00h, 30h; Fam16h using 'EDAC_DEBUG'
   and mce_amd_inj
 - driver obtains info from F2x registers and caches it in pvt
   structures correctly
 - ECC decoding works fine

Signed-off-by: Aravind Gopalakrishnan <aravind.gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/1410799058-3149-1-git-send-email-aravind.gopalakrishnan@amd.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-09-23 13:16:05 +02:00
Aravind Gopalakrishnan 85a8885bd0 amd64_edac: Add support for newer F16h models
Extend ECC decoding support for F16h M30h. Tested on F16h M30h with ECC
turned on using mce_amd_inj module and the patch works fine.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/1392913726-16961-1-git-send-email-Aravind.Gopalakrishnan@amd.com
Tested-by: Arindam Nath <Arindam.Nath@amd.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-27 18:03:16 +01:00
Aravind Gopalakrishnan 9d0e8d8348 amd64_edac: Fix logic to determine channel for F15 M30h processors
Update current channel selection logic to include F15h, M30h memory
controllers.

Refer F15 M30h BKDG D18F2x110[7:6] (DRAM Controller Select Low)
(Link:http://support.amd.com/TechDocs/49125_15h_Models_30h-3Fh_BKDG.pdf)

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/1390338216-3873-1-git-send-email-Aravind.Gopalakrishnan@amd.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2014-02-07 15:01:19 +01:00
Borislav Petkov d1ea71cdc9 amd64_edac: Remove "amd64" prefix from static functions
No need for the namespace tagging there. Cleanup setup_pci_device while
at it.

Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-15 17:54:27 +01:00
Borislav Petkov df781d0386 amd64_edac: Simplify code around decode_bus_error
Drop wrapper function and prefixes.

Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-15 17:29:44 +01:00
Rashika Kheria 79db57cef9 amd64_edac: Mark amd64_decode_bus_error as static
This patch marks the function amd64_decode_bus_error() as static because
it is not used outside of amd64_edac.c.

It also eliminates the following warning:
drivers/edac/amd64_edac.c:2038:6: warning: no previous prototype for ‘amd64_decode_bus_error’ [-Wmissing-prototypes]

Signed-off-by: Rashika Kheria <rashika.kheria@gmail.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
Link: http://lkml.kernel.org/r/7cddbd4c69ed493f183383e98853181aaf75b26b.1387029387.git.rashika.kheria@gmail.com
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-15 17:16:59 +01:00
Jingoo Han ba935f4097 EDAC: Remove DEFINE_PCI_DEVICE_TABLE macro
Currently, there is no other bus that has something like this macro for
their device ids. Thus, DEFINE_PCI_DEVICE_TABLE macro should be removed.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Link: http://lkml.kernel.org/r/001c01ceefb3$5724d860$056e8920$%han@samsung.com
[ Boris: swap commit message with better one. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-06 10:23:41 +01:00
Aravind Gopalakrishnan 7f3f5240ce amd64_edac: Fix condition to verify max channels allowed for F15 M30h
The value returned from 'f15_m30h_determine_channel' will
always be 0x3 max. The condition

	(channel > 4 || channel < 0)

works as hardware never returns a value of 4, but
it leads to static checker analysis errors like
http://marc.info/?l=linux-edac&m=138607615131951&w=2.

Fix that.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/20131203130857.GA32170@elgon.mountain
[ Boris: massage commit message a bit. ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-12-06 10:04:17 +01:00
Chen, Gong 10ef6b0dff bitops: Introduce a more generic BITMASK macro
GENMASK is used to create a contiguous bitmask([hi:lo]). It is
implemented twice in current kernel. One is in EDAC driver, the other
is in SiS/XGI FB driver. Move it to a more generic place for other
usage.

Signed-off-by: Chen, Gong <gong.chen@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Thomas Winischhofer <thomas@winischhofer.net>
Cc: Jean-Christophe Plagniol-Villard <plagnioj@jcrosoft.com>
Cc: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Borislav Petkov <bp@suse.de>
Acked-by: Mauro Carvalho Chehab <m.chehab@samsung.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
2013-10-21 15:12:01 -07:00
Aravind Gopalakrishnan 4fc06b3171 amd64_edac: Fix incorrect wraparounds
dct_base and dct_limit obtain 32 bit register values when they read
their respective pci config space registers. A left shift beyond 32 bits
will cause them to wrap around. Similar case for chan_addr as can be
seen from the bug report (link below). In the patch, we rectify this by
casting chan_addr to u64 and by comparing dct_base and dct_limit against
properly shifted sys_addr in order to compare the correct bits.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/20130819132302.GA12171@elgon.mountain
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-27 15:00:22 +02:00
Borislav Petkov 3f0aba4fc0 amd64_edac: Correct erratum 505 range
Basically we want to cover all 0x0-0xf models, i.e. Orochi and later.

Cc: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
Link: http://lkml.kernel.org/r/20130819192321.GF4165@pd.tnic
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-27 14:25:08 +02:00
Ingo Molnar c874b6ba55 An amd64_edac fix for single channel configurations + trivial cleanups
courtesy of Jingoo Han.
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Merge tag 'edac_for_3.12' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp into x86/ras

Pull RAS/EDAC updates from Boris Petkov:

 "An amd64_edac fix for single channel configurations + trivial cleanups
  courtesy of Jingoo Han."

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2013-08-15 10:07:20 +02:00
Borislav Petkov a4b4bedce8 amd64_edac: Get rid of boot_cpu_data accesses
Now that we cache (family, model, stepping) locally, use them instead of
boot_cpu_data.

No functionality change.

Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-12 16:01:56 +02:00
Aravind Gopalakrishnan 18b94f66f9 amd64_edac: Add ECC decoding support for newer F15h models
On newer models, support has been included for upto 4 DCT's, however,
only DCT0 and DCT3 are currently configured (cf BKDG Section 2.10).
Also, the routing DRAM Requests algorithm is different for F15h M30h.
Thus it is cleaner to use a brand new function rather than adding quirks
to the more generic f1x_match_to_this_node(). Refer to "2.10.5 DRAM
Routing Requests" in the BKDG for further info.

Tested on Fam15h M30h with ECC turned on using mce_amd_inj facility and
verified to be functionally correct.

While at it, verify if erratum workarounds for E505 and E637 still hold.
From email conversations within AMD, the current status of the errata
is:

      * Erratum 505: fixed in model 0x1, stepping 0x1 and later.
      * Erratum 637: not fixed.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Cleanups, corrections ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-08-12 16:00:10 +02:00
Borislav Petkov f0a56c4801 amd64_edac: Fix single-channel setups
It can happen that configurations are running in a single-channel mode
even with a dual-channel memory controller, by, say, putting the DIMMs
only on the one channel and leaving the other empty. This causes a
problem in init_csrows which implicitly assumes that when the second
channel is enabled, i.e. channel 1, the struct dimm hierarchy will be
present. Which is not.

So always allocate two channels unconditionally.

This provides for the nice side effect that the data structures are
initialized so some day, when memory hotplug is supported, it should
just work out of the box when all of a sudden a second channel appears.

Reported-and-tested-by: Roger Leigh <rleigh@debian.org>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-07-29 17:22:41 +02:00
Aravind Gopalakrishnan 94c1acf2c8 amd64_edac: Add Family 16h support
Add code to handle DRAM ECC errors decoding for Fam16h.

Tested on Fam16h with ECC turned on using the mce_amd_inj facility and
works fine.

Signed-off-by: Aravind Gopalakrishnan <Aravind.Gopalakrishnan@amd.com>
[ Boris: cleanups and clarifications ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-04-19 12:46:50 +02:00
Mauro Carvalho Chehab 9713faecff EDAC: Merge mci.mem_is_per_rank with mci.csbased
Both mci.mem_is_per_rank and mci.csbased denote the same thing: the
memory controller is csrows based. Merge both fields into one.

There's no need for the driver to actually fill it, as the core detects
it by checking if one of the layers has the csrows type as part of the
memory hierarchy:

	if (layers[i].type == EDAC_MC_LAYER_CHIP_SELECT)
			per_rank = true;

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-03-16 06:32:30 +01:00
Mauro Carvalho Chehab 1eef128254 amd64_edac: Correct DIMM sizes
We were filling the csrow size with a wrong value. 16a528ee39 ("EDAC:
Fix csrow size reported in sysfs") tried to address the issue. It fixed
the report with the old API but not with the new one. Correct it for the
new API too.

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
[ make it a per-csrow accounting regardless of ->channel_count ]
Signed-off-by: Borislav Petkov <bp@suse.de>
2013-03-16 06:32:02 +01:00
Linus Torvalds 55529fa576 EDAC updates for 3.9
Only one: AMD F16h MCE decoding enablement from Jacob Shin.
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Merge tag 'edac_3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp

Pull EDAC updates from Borislav Petkov:
 "Mostly AMD's side of EDAC.  It is basically a new family enablement
  stuff: AMD F16h MCE decoding enablement from Jacob Shin.  The rest is
  trivial cleanups."

* tag 'edac_3.9' of git://git.kernel.org/pub/scm/linux/kernel/git/bp/bp:
  mpc85xx_edac: Fix typo
  EDAC, MCE, AMD: Remove unneeded exports
  EDAC, MCE, AMD: Add MCE decoding support for Family 16h
  EDAC, MCE, AMD: Make MC2 decoding per-family
  amd64_edac: Remove dead code
2013-02-20 11:28:50 -08:00
Borislav Petkov acc7fcb400 amd64_edac: Remove dead code
5e2af0c09e ("edac: Don't initialize csrow's first_page & friends when
not needed") removed useless initialization of variables but left in the
functions which did that. They're unused now so drop them.

Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-22 22:39:41 +01:00
Daniel J Blueman c7e5301a1b amd64_edac: Fix type usage in NB IDs and memory ranges
Use appropriate types for northbridge IDs and memory ranges. Mark
immutable data const and keep within compilation unit on related
structures.

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/1354265060-22956-2-git-send-email-daniel@numascale-asia.com
[Boris: Drop arg change to node_to_amd_nb]
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-10 16:18:00 +01:00
Daniel J Blueman e2c0bffea2 amd64_edac: Fix PCI function lookup
Fix locating sibling memory controller PCI functions by using the
correct PCI domain and use a northbridge descriptor only if found. We
need to at least warn if it wasn't found so that it gets fixed and we
don't go off with wrong results.

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/1354265060-22956-1-git-send-email-daniel@numascale-asia.com
[Boris: remove wrong comment, sanitize code and warn if NB desc lookup fails]
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-10 16:17:59 +01:00
Daniel J Blueman 8b84c8df38 x86, AMD, NB: Use u16 for northbridge IDs in amd_get_nb_id
Change amd_get_nb_id to return u16 to support >255 memory controllers,
and related consistency fixes.

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/1353997932-8475-2-git-send-email-daniel@numascale-asia.com
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-10 16:17:58 +01:00
Daniel J Blueman 772c3ff385 x86, AMD, NB: Add multi-domain support
Fix get_node_id to match northbridge IDs from the array of detected
ones, allowing multi-server support such as with Numascale's
NumaConnect, renaming to 'amd_get_node_id' for consistency.

Signed-off-by: Daniel J Blueman <daniel@numascale-asia.com>
Link: http://lkml.kernel.org/r/1353997932-8475-1-git-send-email-daniel@numascale-asia.com
[Boris: shorten lines to fit 80 cols]
Signed-off-by: Borislav Petkov <bp@alien8.de>
2013-01-10 16:17:58 +01:00
Greg Kroah-Hartman 9b3c6e85c2 Drivers: edac: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, and __devexit
from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Doug Thompson <dougthompson@xmission.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Mark Gross <mark.gross@intel.com>
Cc: Jason Uhlenkott <juhlenko@akamai.com>
Cc: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: Tim Small <tim@buttersideup.com>
Cc: Ranganathan Desikan <ravi@jetztechnologies.com>
Cc: "Arvind R." <arvino55@gmail.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: David Daney <david.daney@cavium.com>
Cc: Egor Martovetsky <egor@pasemi.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Chris Metcalf <cmetcalf@tilera.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:03 -08:00
Borislav Petkov 16a528ee39 EDAC: Fix csrow size reported in sysfs
On csrow-based memory controllers, we combine the csrow size from both
channels and there's no need to do that again in csrow_size_show which
leads to double the size of a csrow.

Fix it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:54:40 +01:00
Borislav Petkov 1165276917 EDAC: Add memory controller flags
The first flag is ->csbased and will be used in common EDAC code later.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:48:04 +01:00
Borislav Petkov 10de6497a5 amd64_edac: Fix csrows size and pages computation
Make sure code pays attention to K8 having only one DCT, reformat and
cleanup code, correct debug messages, remove unused code.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:47:36 +01:00
Borislav Petkov 0a5dfc3140 amd64_edac: Use DBAM_DIMM macro
Instead of open-coding it, use the DBAM_DIMM macro in
amd64_csrow_nr_pages() which we have already.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:46:19 +01:00
Borislav Petkov bb89f5a054 amd64_edac: Fix K8 chip select reporting
This basically reverts 603adaf6b3 ("amd64_edac: fix K8 chip select
reporting") because it was a clumsy workaround for DIMM sizes reporting
on K8 which got superceded by a much more correct one with 41d8bfaba7
("amd64_edac: Improve DRAM address mapping") without removing the prior
one. Remove it now finally.

Reported-by: Josh Hunt <johunt@akamai.com>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:45:46 +01:00
Borislav Petkov 33ca0643c9 amd64_edac: Reorganize error reporting path
Rewrite CE/UE paths so that they use the same code and drop additional
code duplication in handle_ue. Add a struct err_info which collects
required info for the error reporting. This, in turn, helps slimming all
edac_mc_handle_error() calls down to one.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:45:34 +01:00
Borislav Petkov c8d1adf092 amd64_edac: Do not check whether error address is valid
All families report a valid error address when encountering a DRAM ECC
error so no need to check it.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:45:11 +01:00
Borislav Petkov 66fed2d464 amd64_edac: Improve error injection
When injecting DRAM ECC errors over the F3xB[8,C] interface, the machine
does this by injecting the error in the next non-cached access. This
takes relatively long time on a normal system so that in order for us to
expedite it, we disable the caches around the injection.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:45:01 +01:00
Borislav Petkov 1f31677e0d amd64_edac: Small fixlets and cleanups
amd64_get_dram_hole_info: remove local variable 'base'.
sys_addr_to_dram_addr: do not clear local variable 'ret'. Also, sanitize
constants formatting.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-11-28 11:44:12 +01:00
Andrew Morton 168bfeef7b amd64_edac:__amd64_set_scrub_rate(): avoid overindexing scrubrates[]
If none of the elements in scrubrates[] matches, this loop will cause
__amd64_set_scrub_rate() to incorrectly use the n+1th element.

As the function is designed to use the final scrubrates[] element in the
case of no match, we can fix this bug by simply terminating the array
search at the n-1th element.

Boris: this code is fragile anyway, see here why:
http://marc.info/?l=linux-kernel&m=135102834131236&w=2

It will be rewritten more robustly soonish.

Reported-by: Denis Kirjanov <kirjanov@gmail.com>
Cc: stable@vger.kernel.org
Cc: Doug Thompson <dougthompson@xmission.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>
2012-10-24 16:13:27 +02:00
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
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
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 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 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 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 ab5a503cb5 amd64_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: Doug Thompson <norsk5@yahoo.com>
Cc: Borislav Petkov <borislav.petkov@amd.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
2012-05-28 19:10:59 -03:00