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* 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 ...
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,140 @@ | ||
| What: /sys/devices/system/edac/mc/mc*/reset_counters | ||
| Date: January 2006 | ||
| Contact: linux-edac@vger.kernel.org | ||
| Description: This write-only control file will zero all the statistical | ||
| counters for UE and CE errors on the given memory controller. | ||
| Zeroing the counters will also reset the timer indicating how | ||
| long since the last counter were reset. This is useful for | ||
| computing errors/time. Since the counters are always reset | ||
| at driver initialization time, no module/kernel parameter | ||
| is available. | ||
|
|
||
| What: /sys/devices/system/edac/mc/mc*/seconds_since_reset | ||
| Date: January 2006 | ||
| Contact: linux-edac@vger.kernel.org | ||
| Description: This attribute file displays how many seconds have elapsed | ||
| since the last counter reset. This can be used with the error | ||
| counters to measure error rates. | ||
|
|
||
| What: /sys/devices/system/edac/mc/mc*/mc_name | ||
| Date: January 2006 | ||
| Contact: linux-edac@vger.kernel.org | ||
| Description: This attribute file displays the type of memory controller | ||
| that is being utilized. | ||
|
|
||
| What: /sys/devices/system/edac/mc/mc*/size_mb | ||
| Date: January 2006 | ||
| Contact: linux-edac@vger.kernel.org | ||
| Description: This attribute file displays, in count of megabytes, of memory | ||
| that this memory controller manages. | ||
|
|
||
| What: /sys/devices/system/edac/mc/mc*/ue_count | ||
| Date: January 2006 | ||
| Contact: linux-edac@vger.kernel.org | ||
| Description: This attribute file displays the total count of uncorrectable | ||
| errors that have occurred on this memory controller. If | ||
| panic_on_ue is set, this counter will not have a chance to | ||
| increment, since EDAC will panic the system | ||
|
|
||
| What: /sys/devices/system/edac/mc/mc*/ue_noinfo_count | ||
| Date: January 2006 | ||
| Contact: linux-edac@vger.kernel.org | ||
| Description: This attribute file displays the number of UEs that have | ||
| occurred on this memory controller with no information as to | ||
| which DIMM slot is having errors. | ||
|
|
||
| What: /sys/devices/system/edac/mc/mc*/ce_count | ||
| Date: January 2006 | ||
| Contact: linux-edac@vger.kernel.org | ||
| Description: This attribute file displays the total count of correctable | ||
| errors that have occurred on this memory controller. This | ||
| count is very important to examine. CEs provide early | ||
| indications that a DIMM is beginning to fail. This count | ||
| field should be monitored for non-zero values and report | ||
| such information to the system administrator. | ||
|
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||
| What: /sys/devices/system/edac/mc/mc*/ce_noinfo_count | ||
| Date: January 2006 | ||
| Contact: linux-edac@vger.kernel.org | ||
| Description: This attribute file displays the number of CEs that | ||
| have occurred on this memory controller wherewith no | ||
| information as to which DIMM slot is having errors. Memory is | ||
| handicapped, but operational, yet no information is available | ||
| to indicate which slot the failing memory is in. This count | ||
| field should be also be monitored for non-zero values. | ||
|
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||
| What: /sys/devices/system/edac/mc/mc*/sdram_scrub_rate | ||
| Date: February 2007 | ||
| Contact: linux-edac@vger.kernel.org | ||
| Description: Read/Write attribute file that controls memory scrubbing. | ||
| The scrubbing rate used by the memory controller is set by | ||
| writing a minimum bandwidth in bytes/sec to the attribute file. | ||
| The rate will be translated to an internal value that gives at | ||
| least the specified rate. | ||
| Reading the file will return the actual scrubbing rate employed. | ||
| If configuration fails or memory scrubbing is not implemented, | ||
| the value of the attribute file will be -1. | ||
|
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||
| What: /sys/devices/system/edac/mc/mc*/max_location | ||
| Date: April 2012 | ||
| Contact: Mauro Carvalho Chehab <mchehab@redhat.com> | ||
| linux-edac@vger.kernel.org | ||
| Description: This attribute file displays the information about the last | ||
| available memory slot in this memory controller. It is used by | ||
| userspace tools in order to display the memory filling layout. | ||
|
|
||
| What: /sys/devices/system/edac/mc/mc*/(dimm|rank)*/size | ||
| Date: April 2012 | ||
| Contact: Mauro Carvalho Chehab <mchehab@redhat.com> | ||
| linux-edac@vger.kernel.org | ||
| Description: This attribute file will display the size of dimm or rank. | ||
| For dimm*/size, this is the size, in MB of the DIMM memory | ||
| stick. For rank*/size, this is the size, in MB for one rank | ||
| of the DIMM memory stick. On single rank memories (1R), this | ||
| is also the total size of the dimm. On dual rank (2R) memories, | ||
| this is half the size of the total DIMM memories. | ||
|
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||
| What: /sys/devices/system/edac/mc/mc*/(dimm|rank)*/dimm_dev_type | ||
| Date: April 2012 | ||
| Contact: Mauro Carvalho Chehab <mchehab@redhat.com> | ||
| linux-edac@vger.kernel.org | ||
| Description: This attribute file will display what type of DRAM device is | ||
| being utilized on this DIMM (x1, x2, x4, x8, ...). | ||
|
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| What: /sys/devices/system/edac/mc/mc*/(dimm|rank)*/dimm_edac_mode | ||
| Date: April 2012 | ||
| Contact: Mauro Carvalho Chehab <mchehab@redhat.com> | ||
| linux-edac@vger.kernel.org | ||
| Description: This attribute file will display what type of Error detection | ||
| and correction is being utilized. For example: S4ECD4ED would | ||
| mean a Chipkill with x4 DRAM. | ||
|
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||
| What: /sys/devices/system/edac/mc/mc*/(dimm|rank)*/dimm_label | ||
| Date: April 2012 | ||
| Contact: Mauro Carvalho Chehab <mchehab@redhat.com> | ||
| linux-edac@vger.kernel.org | ||
| Description: This control file allows this DIMM to have a label assigned | ||
| to it. With this label in the module, when errors occur | ||
| the output can provide the DIMM label in the system log. | ||
| This becomes vital for panic events to isolate the | ||
| cause of the UE event. | ||
| DIMM Labels must be assigned after booting, with information | ||
| that correctly identifies the physical slot with its | ||
| silk screen label. This information is currently very | ||
| motherboard specific and determination of this information | ||
| must occur in userland at this time. | ||
|
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| What: /sys/devices/system/edac/mc/mc*/(dimm|rank)*/dimm_location | ||
| Date: April 2012 | ||
| Contact: Mauro Carvalho Chehab <mchehab@redhat.com> | ||
| linux-edac@vger.kernel.org | ||
| Description: This attribute file will display the location (csrow/channel, | ||
| branch/channel/slot or channel/slot) of the dimm or rank. | ||
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| What: /sys/devices/system/edac/mc/mc*/(dimm|rank)*/dimm_mem_type | ||
| Date: April 2012 | ||
| Contact: Mauro Carvalho Chehab <mchehab@redhat.com> | ||
| linux-edac@vger.kernel.org | ||
| Description: This attribute file will display what type of memory is | ||
| currently on this csrow. Normally, either buffered or | ||
| unbuffered memory (for example, Unbuffered-DDR3). |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,15 @@ | ||
| Calxeda Highbank L2 cache ECC | ||
|
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||
| Properties: | ||
| - compatible : Should be "calxeda,hb-sregs-l2-ecc" | ||
| - reg : Address and size for ECC error interrupt clear registers. | ||
| - interrupts : Should be single bit error interrupt, then double bit error | ||
| interrupt. | ||
|
|
||
| Example: | ||
|
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||
| sregs@fff3c200 { | ||
| compatible = "calxeda,hb-sregs-l2-ecc"; | ||
| reg = <0xfff3c200 0x100>; | ||
| interrupts = <0 71 4 0 72 4>; | ||
| }; |
14 changes: 14 additions & 0 deletions
14
Documentation/devicetree/bindings/arm/calxeda/mem-ctrlr.txt
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| Original file line number | Diff line number | Diff line change |
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| Calxeda DDR memory controller | ||
|
|
||
| Properties: | ||
| - compatible : Should be "calxeda,hb-ddr-ctrl" | ||
| - reg : Address and size for DDR controller registers. | ||
| - interrupts : Interrupt for DDR controller. | ||
|
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||
| Example: | ||
|
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| memory-controller@fff00000 { | ||
| compatible = "calxeda,hb-ddr-ctrl"; | ||
| reg = <0xfff00000 0x1000>; | ||
| interrupts = <0 91 4>; | ||
| }; |
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