hw/arm/smmuv3: Use correct bit positions in EVT_SET_ADDR2 macro

The bit offsets in the EVT_SET_ADDR2 macro do not match those specified
in the ARM SMMUv3 Architecture Specification. In all events that use
this macro, e.g. F_WALK_EABT, the faulting fetch address or IPA actually
occupies the 32-bit words 6 and 7 in the event record contiguously, with
the upper and lower unused bits clear due to alignment or maximum
supported address bits. How many bits are clear depends on the
individual event type.

Update the macro to write to the correct words in the event record so
that guest drivers can obtain accurate address information on events.

ref. ARM IHI 0070C, sections 7.3.12 through 7.3.16.

Signed-off-by: Simon Veith <sveith@amazon.de>
Acked-by: Eric Auger <eric.auger@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Message-id: 1576509312-13083-6-git-send-email-sveith@amazon.de
Cc: Eric Auger <eric.auger@redhat.com>
Cc: qemu-devel@nongnu.org
Cc: qemu-arm@nongnu.org
Acked-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

diff --git a/hw/arm/smmuv3-internal.h b/hw/arm/smmuv3-internal.h
index 042b4358084b6b87e8b9e42d5622d73b82710a4b..4112394129e0069018a5967cb6851b4e4cc96f93 100644 (file)
--- a/hw/arm/smmuv3-internal.h
+++ b/hw/arm/smmuv3-internal.h
@@ -461,8 +461,8 @@ typedef struct SMMUEventInfo {
     } while (0)
 #define EVT_SET_ADDR2(x, addr)                            \
     do {                                                  \
-            (x)->word[7] = deposit32((x)->word[7], 3, 29, addr >> 16);   \
-            (x)->word[7] = deposit32((x)->word[7], 0, 16, addr & 0xffff);\
+            (x)->word[7] = (uint32_t)(addr >> 32);        \
+            (x)->word[6] = (uint32_t)(addr & 0xffffffff); \
     } while (0)
 
 void smmuv3_record_event(SMMUv3State *s, SMMUEventInfo *event);