Devices: Add support for legacy fixed IO locations in BARs.

2 files changed, 24 insertions, 3 deletions

diff --git a/src/dev/x86/pc.cc b/src/dev/x86/pc.cc
index 2deed95d3..3dfa50d7f 100644
--- a/src/dev/x86/pc.cc
+++ b/src/dev/x86/pc.cc
@@ -143,9 +143,8 @@ Pc::pciToDma(Addr pciAddr) const
     M5_DUMMY_RETURN
 }
 
-
 Addr
-Pc::calcConfigAddr(int bus, int dev, int func)
+Pc::calcPciConfigAddr(int bus, int dev, int func)
 {
     assert(func < 8);
     assert(dev < 32);
@@ -153,6 +152,18 @@ Pc::calcConfigAddr(int bus, int dev, int func)
     return (PhysAddrPrefixPciConfig | (func << 8) | (dev << 11));
 }
 
+Addr
+Pc::calcPciIOAddr(Addr addr)
+{
+    return PhysAddrPrefixIO + addr;
+}
+
+Addr
+Pc::calcPciMemAddr(Addr addr)
+{
+    return addr;
+}
+
 Pc *
 PcParams::create()
 {
diff --git a/src/dev/x86/pc.hh b/src/dev/x86/pc.hh
index 21055a566..427cc4165 100644
--- a/src/dev/x86/pc.hh
+++ b/src/dev/x86/pc.hh
@@ -93,7 +93,17 @@ class Pc : public Platform
     /**
      * Calculate the configuration address given a bus/dev/func.
      */
-    virtual Addr calcConfigAddr(int bus, int dev, int func);
+    virtual Addr calcPciConfigAddr(int bus, int dev, int func);
+
+    /**
+     * Calculate the address for an IO location on the PCI bus.
+     */
+    virtual Addr calcPciIOAddr(Addr addr);
+
+    /**
+     * Calculate the address for a memory location on the PCI bus.
+     */
+    virtual Addr calcPciMemAddr(Addr addr);
 };
 
 #endif // __DEV_PC_HH__