[PATCH v3 3/4] arm: add ISAR2, MMFR0 and MMFR1 fields in cpufeature

[Bertrand Marquis <bertrand.marquis@xxxxxxx>]

Complete AA64ISAR2 and AA64MMFR[0-1] with more fields.
While there add a comment for MMFR bitfields as for other registers in
the cpuinfo structure definition.

Signed-off-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
Reviewed-by: Stefano Stabellini <sstabellini@xxxxxxxxxx>
---
Changes in v3:
- fix tgranule_4k_2
- add Stefano r-b
Changes in v2:
- patch introduced to isolate changes in cpufeature.h
- complete MMFR0 and ISAR2 to sync with sysregs.h status
---
 xen/arch/arm/include/asm/cpufeature.h | 28 ++++++++++++++++++++++-----
 1 file changed, 23 insertions(+), 5 deletions(-)

diff --git a/xen/arch/arm/include/asm/cpufeature.h 
b/xen/arch/arm/include/asm/cpufeature.h
index 24c01d2b9d..c86a2e7f29 100644
--- a/xen/arch/arm/include/asm/cpufeature.h
+++ b/xen/arch/arm/include/asm/cpufeature.h
@@ -234,6 +234,7 @@ struct cpuinfo_arm {
     union {
         register_t bits[3];
         struct {
+            /* MMFR0 */
             unsigned long pa_range:4;
             unsigned long asid_bits:4;
             unsigned long bigend:4;
@@ -242,18 +243,31 @@ struct cpuinfo_arm {
             unsigned long tgranule_16K:4;
             unsigned long tgranule_64K:4;
             unsigned long tgranule_4K:4;
-            unsigned long __res0:32;
-
+            unsigned long tgranule_16k_2:4;
+            unsigned long tgranule_64k_2:4;
+            unsigned long tgranule_4k_2:4;
+            unsigned long exs:4;
+            unsigned long __res0:8;
+            unsigned long fgt:4;
+            unsigned long ecv:4;
+
+            /* MMFR1 */
             unsigned long hafdbs:4;
             unsigned long vmid_bits:4;
             unsigned long vh:4;
             unsigned long hpds:4;
             unsigned long lo:4;
             unsigned long pan:4;
-            unsigned long __res1:8;
-            unsigned long __res2:28;
+            unsigned long specsei:4;
+            unsigned long xnx:4;
+            unsigned long twed:4;
+            unsigned long ets:4;
+            unsigned long __res1:4;
+            unsigned long afp:4;
+            unsigned long __res2:12;
             unsigned long ecbhb:4;
 
+            /* MMFR2 */
             unsigned long __res3:64;
         };
     } mm64;
@@ -297,7 +311,11 @@ struct cpuinfo_arm {
             unsigned long __res2:8;
 
             /* ISAR2 */
-            unsigned long __res3:28;
+            unsigned long wfxt:4;
+            unsigned long rpres:4;
+            unsigned long gpa3:4;
+            unsigned long apa3:4;
+            unsigned long __res3:12;
             unsigned long clearbhb:4;
 
             unsigned long __res4:32;
-- 
2.25.1