From 791a61ffedb4f5ec6ea8ca45c98653b3e70fa66e Mon Sep 17 00:00:00 2001
From: Berkus Decker <berkus+github@metta.systems>
Date: Thu, 7 Mar 2019 20:50:02 +0200
Subject: [PATCH] Add phys2bus and bus2phys - debugging mailbox code

---
 src/platform/rpi3.rs | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/platform/rpi3.rs b/src/platform/rpi3.rs
index 05944f6..b7b1335 100644
--- a/src/platform/rpi3.rs
+++ b/src/platform/rpi3.rs
@@ -24,6 +24,10 @@ impl BcmHost {
     /// As per https://www.raspberrypi.org/forums/viewtopic.php?p=1170522#p1170522
     ///
     pub fn bus2phys(bus: u32) -> u32 {
-        bus & !0xC000_0000
+        bus & !0xc000_0000
+    }
+
+    pub fn phys2bus(phys: u32) -> u32 {
+        phys | 0xc000_0000
     }
 }