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EDAC/mc_sysfs: Increase legacy channel support to 16

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Newer AMD systems can support up to 16 channels per EDAC "mc" device.
These are detected by the EDAC module running on the device, and the
current EDAC interface is appropriately enumerated.

The legacy EDAC sysfs interface however, provides device attributes for
channels 0 through 11 only. Consequently, the last four channels, 12
through 15, will not be enumerated and will not be visible through the
legacy sysfs interface.

Add additional device attributes to ensure that all 16 channels, if
present, are enumerated by and visible through the legacy EDAC sysfs
interface.

Signed-off-by: Avadhut Naik <avadhut.naik@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20250916203242.1281036-1-avadhut.naik@amd.com
This commit is contained in:
Avadhut Naik
2025-09-16 20:30:17 +00:00
committed by Borislav Petkov (AMD)
parent 6fffa38c4c
commit 6e1c2c6c2c
1 changed files with 24 additions and 0 deletions
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24
drivers/edac/edac_mc_sysfs.c
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@@ -305,6 +305,14 @@ DEVICE_CHANNEL(ch10_dimm_label, S_IRUGO | S_IWUSR,
channel_dimm_label_show, channel_dimm_label_store, 10);
DEVICE_CHANNEL(ch11_dimm_label, S_IRUGO | S_IWUSR,
channel_dimm_label_show, channel_dimm_label_store, 11);
DEVICE_CHANNEL(ch12_dimm_label, S_IRUGO | S_IWUSR,
channel_dimm_label_show, channel_dimm_label_store, 12);
DEVICE_CHANNEL(ch13_dimm_label, S_IRUGO | S_IWUSR,
channel_dimm_label_show, channel_dimm_label_store, 13);
DEVICE_CHANNEL(ch14_dimm_label, S_IRUGO | S_IWUSR,
channel_dimm_label_show, channel_dimm_label_store, 14);
DEVICE_CHANNEL(ch15_dimm_label, S_IRUGO | S_IWUSR,
channel_dimm_label_show, channel_dimm_label_store, 15);
/* Total possible dynamic DIMM Label attribute file table */
static struct attribute *dynamic_csrow_dimm_attr[] = {
@@ -320,6 +328,10 @@ static struct attribute *dynamic_csrow_dimm_attr[] = {
&dev_attr_legacy_ch9_dimm_label.attr.attr,
&dev_attr_legacy_ch10_dimm_label.attr.attr,
&dev_attr_legacy_ch11_dimm_label.attr.attr,
&dev_attr_legacy_ch12_dimm_label.attr.attr,
&dev_attr_legacy_ch13_dimm_label.attr.attr,
&dev_attr_legacy_ch14_dimm_label.attr.attr,
&dev_attr_legacy_ch15_dimm_label.attr.attr,
NULL
};
@@ -348,6 +360,14 @@ DEVICE_CHANNEL(ch10_ce_count, S_IRUGO,
channel_ce_count_show, NULL, 10);
DEVICE_CHANNEL(ch11_ce_count, S_IRUGO,
channel_ce_count_show, NULL, 11);
DEVICE_CHANNEL(ch12_ce_count, S_IRUGO,
channel_ce_count_show, NULL, 12);
DEVICE_CHANNEL(ch13_ce_count, S_IRUGO,
channel_ce_count_show, NULL, 13);
DEVICE_CHANNEL(ch14_ce_count, S_IRUGO,
channel_ce_count_show, NULL, 14);
DEVICE_CHANNEL(ch15_ce_count, S_IRUGO,
channel_ce_count_show, NULL, 15);
/* Total possible dynamic ce_count attribute file table */
static struct attribute *dynamic_csrow_ce_count_attr[] = {
@@ -363,6 +383,10 @@ static struct attribute *dynamic_csrow_ce_count_attr[] = {
&dev_attr_legacy_ch9_ce_count.attr.attr,
&dev_attr_legacy_ch10_ce_count.attr.attr,
&dev_attr_legacy_ch11_ce_count.attr.attr,
&dev_attr_legacy_ch12_ce_count.attr.attr,
&dev_attr_legacy_ch13_ce_count.attr.attr,
&dev_attr_legacy_ch14_ce_count.attr.attr,
&dev_attr_legacy_ch15_ce_count.attr.attr,
NULL
};