EDAC/{skx_common,skx,i10nm}: Move the common debug code to skx_common

Commit

  afdb82fd763c ("EDAC, i10nm: make skx_common.o a separate module")

made skx_common.o a separate module. With skx_common.o now a separate
module, move the common debug code setup_{skx,i10nm}_debug() and
teardown_{skx,i10nm}_debug() in {skx,i10nm}_base.c to skx_common.c to
reduce code duplication. Additionally, prefix these function names with
'skx' to maintain consistency with other names in the file.

Signed-off-by: Qiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Link: https://lore.kernel.org/all/20240829055101.56245-1-qiuxu.zhuo@intel.com

1 files changed, 47 insertions, 0 deletions

diff --git a/drivers/edac/skx_common.c b/drivers/edac/skx_common.c
index 8d18099fd528..7cd074401167 100644
--- a/drivers/edac/skx_common.c
+++ b/drivers/edac/skx_common.c
@@ -739,6 +739,53 @@ void skx_remove(void)
 }
 EXPORT_SYMBOL_GPL(skx_remove);
 
+#ifdef CONFIG_EDAC_DEBUG
+/*
+ * Debug feature.
+ * Exercise the address decode logic by writing an address to
+ * /sys/kernel/debug/edac/{skx,i10nm}_test/addr.
+ */
+static struct dentry *skx_test;
+
+static int debugfs_u64_set(void *data, u64 val)
+{
+	struct mce m;
+
+	pr_warn_once("Fake error to 0x%llx injected via debugfs\n", val);
+
+	memset(&m, 0, sizeof(m));
+	/* ADDRV + MemRd + Unknown channel */
+	m.status = MCI_STATUS_ADDRV + 0x90;
+	/* One corrected error */
+	m.status |= BIT_ULL(MCI_STATUS_CEC_SHIFT);
+	m.addr = val;
+	skx_mce_check_error(NULL, 0, &m);
+
+	return 0;
+}
+DEFINE_SIMPLE_ATTRIBUTE(fops_u64_wo, NULL, debugfs_u64_set, "%llu\n");
+
+void skx_setup_debug(const char *name)
+{
+	skx_test = edac_debugfs_create_dir(name);
+	if (!skx_test)
+		return;
+
+	if (!edac_debugfs_create_file("addr", 0200, skx_test,
+				      NULL, &fops_u64_wo)) {
+		debugfs_remove(skx_test);
+		skx_test = NULL;
+	}
+}
+EXPORT_SYMBOL_GPL(skx_setup_debug);
+
+void skx_teardown_debug(void)
+{
+	debugfs_remove_recursive(skx_test);
+}
+EXPORT_SYMBOL_GPL(skx_teardown_debug);
+#endif /*CONFIG_EDAC_DEBUG*/
+
 MODULE_LICENSE("GPL v2");
 MODULE_AUTHOR("Tony Luck");
 MODULE_DESCRIPTION("MC Driver for Intel server processors");