EDAC, MCE: Select extended error code mask

F15h enlarges the extended error code of an MCE to a 5-bit field
(MCi_STATUS[20:16]). Add a mask variable which default 0xf is overridden
on F15h.

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

diff --git a/drivers/edac/mce_amd.c b/drivers/edac/mce_amd.c
index c018109..01853ee 100644 (file)
--- a/drivers/edac/mce_amd.c
+++ b/drivers/edac/mce_amd.c
@@ -5,6 +5,7 @@
 
 static struct amd_decoder_ops *fam_ops;
 
+static u8 xec_mask      = 0xf;
 static u8 nb_err_cpumask = 0xf;
 
 static bool report_gart_errors;
@@ -172,7 +173,7 @@ static bool f14h_dc_mce(u16 ec)
 static void amd_decode_dc_mce(struct mce *m)
 {
        u16 ec = m->status & 0xffff;
-       u8 xec = (m->status >> 16) & 0xf;
+       u8 xec = (m->status >> 16) & xec_mask;
 
        pr_emerg(HW_ERR "Data Cache Error: ");
 
@@ -257,7 +258,7 @@ static bool f14h_ic_mce(u16 ec)
 static void amd_decode_ic_mce(struct mce *m)
 {
        u16 ec = m->status & 0xffff;
-       u8 xec = (m->status >> 16) & 0xf;
+       u8 xec = (m->status >> 16) & xec_mask;
 
        pr_emerg(HW_ERR "Instruction Cache Error: ");
 
@@ -277,7 +278,7 @@ static void amd_decode_ic_mce(struct mce *m)
 static void amd_decode_bu_mce(struct mce *m)
 {
        u32 ec = m->status & 0xffff;
-       u32 xec = (m->status >> 16) & 0xf;
+       u32 xec = (m->status >> 16) & xec_mask;
 
        pr_emerg(HW_ERR "Bus Unit Error");
 
@@ -319,7 +320,7 @@ wrong_bu_mce:
 static void amd_decode_ls_mce(struct mce *m)
 {
        u16 ec = m->status & 0xffff;
-       u8 xec = (m->status >> 16) & 0xf;
+       u8 xec = (m->status >> 16) & xec_mask;
 
        if (boot_cpu_data.x86 == 0x14) {
                pr_emerg("You shouldn't be seeing an LS MCE on this cpu family,"
@@ -651,6 +652,10 @@ static int __init mce_amd_init(void)
                fam_ops->nb_mce = nb_noop_mce;
                break;
 
+       case 0x15:
+               xec_mask = 0x1f;
+               break;
+
        default:
                printk(KERN_WARNING "Huh? What family is that: %d?!\n",
                                    boot_cpu_data.x86);