[PATCH for-5.2 v4 09/11] hw/arm/smmuv3: Let AIDR advertise SMMUv3.0 support

[Eric Auger]

Add the support for AIDR register. It currently advertises
SMMU V3.0 spec.

Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>

---

v3 -> v4:
- upper -> lower case
- added Peter's R-b
---
 hw/arm/smmuv3-internal.h | 1 +
 include/hw/arm/smmuv3.h  | 1 +
 hw/arm/smmuv3.c          | 3 +++
 3 files changed, 5 insertions(+)

diff --git a/hw/arm/smmuv3-internal.h b/hw/arm/smmuv3-internal.h
index ef093eaff5..bd34a4f330 100644
--- a/hw/arm/smmuv3-internal.h
+++ b/hw/arm/smmuv3-internal.h
@@ -64,6 +64,7 @@ REG32(IDR5,                0x14)
 #define SMMU_IDR5_OAS 4
 
 REG32(IIDR,                0x18)
+REG32(AIDR,                0x1c)
 REG32(CR0,                 0x20)
     FIELD(CR0, SMMU_ENABLE,   0, 1)
     FIELD(CR0, EVENTQEN,      2, 1)
diff --git a/include/hw/arm/smmuv3.h b/include/hw/arm/smmuv3.h
index 36b2f45253..68d7a963e0 100644
--- a/include/hw/arm/smmuv3.h
+++ b/include/hw/arm/smmuv3.h
@@ -41,6 +41,7 @@ typedef struct SMMUv3State {
 
     uint32_t idr[6];
     uint32_t iidr;
+    uint32_t aidr;
     uint32_t cr[3];
     uint32_t cr0ack;
     uint32_t statusr;
diff --git a/hw/arm/smmuv3.c b/hw/arm/smmuv3.c
index 89ab11fc36..718f28462e 100644
--- a/hw/arm/smmuv3.c
+++ b/hw/arm/smmuv3.c
@@ -1251,6 +1251,9 @@ static MemTxResult smmu_readl(SMMUv3State *s, hwaddr 
offset,
     case A_IIDR:
         *data = s->iidr;
         return MEMTX_OK;
+    case A_AIDR:
+        *data = s->aidr;
+        return MEMTX_OK;
     case A_CR0:
         *data = s->cr[0];
         return MEMTX_OK;
-- 
2.21.3