EDAC: move MCE error descriptions to EDAC core

This is in preparation of adding AMD-specific MCE decoding functionality
to the EDAC core. The error decoding macros originate from the AMD64
EDAC driver albeit in a simplified and cleaned up version here.

While at it, add macros to generate the error description strings and
use them in the error type decoders directly which removes a bunch of
code and makes the decoding functions much more readable. Also, fix
strings and shorten macro names.

Remove superfluous htlink_msgs.

Signed-off-by: Borislav Petkov <borislav.petkov@amd.com>

1 files changed, 29 insertions, 0 deletions

diff --git a/drivers/edac/edac_mce_amd.h b/drivers/edac/edac_mce_amd.h
new file mode 100644
index 000000000000..81f9dcf9990a
--- /dev/null
+++ b/drivers/edac/edac_mce_amd.h
@@ -0,0 +1,29 @@
+#define ERROR_CODE(x)                   ((x) & 0xffff)
+#define EXT_ERROR_CODE(x)               (((x) >> 16) & 0x1f)
+#define LOW_SYNDROME(x)                 (((x) >> 15) & 0xff)
+#define HIGH_SYNDROME(x)                (((x) >> 24) & 0xff)
+
+#define TLB_ERROR(x)                    (((x) & 0xFFF0) == 0x0010)
+#define MEM_ERROR(x)                    (((x) & 0xFF00) == 0x0100)
+#define BUS_ERROR(x)                    (((x) & 0xF800) == 0x0800)
+
+#define TT(x)                           (((x) >> 2) & 0x3)
+#define TT_MSG(x)                       tt_msgs[TT(x)]
+#define II(x)                           (((x) >> 2) & 0x3)
+#define II_MSG(x)                       ii_msgs[II(x)]
+#define LL(x)                           (((x) >> 0) & 0x3)
+#define LL_MSG(x)                       ll_msgs[LL(x)]
+#define RRRR(x)                         (((x) >> 4) & 0xf)
+#define RRRR_MSG(x)                     rrrr_msgs[RRRR(x)]
+#define TO(x)                           (((x) >> 8) & 0x1)
+#define TO_MSG(x)                       to_msgs[TO(x)]
+#define PP(x)                           (((x) >> 9) & 0x3)
+#define PP_MSG(x)                       pp_msgs[PP(x)]
+
+extern const char *tt_msgs[];
+extern const char *ll_msgs[];
+extern const char *rrrr_msgs[];
+extern const char *pp_msgs[];
+extern const char *to_msgs[];
+extern const char *ii_msgs[];
+extern const char *ext_msgs[];