x86/mce: Add macros for the corrected error count bit field

mainline inclusion
from mainline-v4.20-rc1
commit e5276b1f
category: feature
bugzilla: https://bugzilla.openeuler.org/show_bug.cgi?id=44
CVE: NA

-----------------------------------------------

The bit field [52:38] of MCi_STATUS contains the corrected error count.
Add {*_SHIFT|*_MASK|*_CEC(c)} macros for it.

 [ bp: use GENMASK_ULL. ]
Signed-off-by: NQiuxu Zhuo <qiuxu.zhuo@intel.com>
Signed-off-by: NTony Luck <tony.luck@intel.com>
Signed-off-by: NBorislav Petkov <bp@suse.de>
Cc: Aristeu Rozanski <aris@redhat.com>
Cc: Mauro Carvalho Chehab <mchehab@s-opensource.com>
Cc: linux-edac@vger.kernel.org
Cc: x86@kernel.org
Link: https://lkml.kernel.org/r/20180925000343.GB5998@agluck-deskSigned-off-by: NZheng Zengkai <zhengzengkai@huawei.com>
Reviewed-by: NXiongfeng Wang <wangxiongfeng2@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>

arch/x86/include/asm/mce.h

@@ -39,6 +39,9 @@
 #define MCI_STATUS_PCC		BIT_ULL(57)  /* processor context corrupt */
 #define MCI_STATUS_S		BIT_ULL(56)  /* Signaled machine check */
 #define MCI_STATUS_AR		BIT_ULL(55)  /* Action required */
+#define MCI_STATUS_CEC_SHIFT	38           /* Corrected Error Count */
+#define MCI_STATUS_CEC_MASK	GENMASK_ULL(52,38)
+#define MCI_STATUS_CEC(c)	(((c) & MCI_STATUS_CEC_MASK) >> MCI_STATUS_CEC_SHIFT)
 
 /* AMD-specific bits */
 #define MCI_STATUS_TCC		BIT_ULL(55)  /* Task context corrupt */