Added initial (hackish) support for translating between a PCI bus address

and a physical memory address for DMA

dev/tsunami_pchip.cc:
dev/tsunami_pchip.hh:
    Changed registers to array and added mapping function to translate between
    PCI bus space and physical address space

--HG--
extra : convert_revision : e9dc4de4e7effe8e8e2365298843d6f767b5a289

1 files changed, 7 insertions, 13 deletions

diff --git a/dev/tsunami_pchip.hh b/dev/tsunami_pchip.hh
index 99530ddc0..3ed66c54c 100644
--- a/dev/tsunami_pchip.hh
+++ b/dev/tsunami_pchip.hh
@@ -48,24 +48,18 @@ class TsunamiPChip : public FunctionalMemory
   protected:
     Tsunami *tsunami;
 
-    uint64_t wsba0;
-    uint64_t wsba1;
-    uint64_t wsba2;
-    uint64_t wsba3;
-    uint64_t wsm0;
-    uint64_t wsm1;
-    uint64_t wsm2;
-    uint64_t wsm3;
-    uint64_t tba0;
-    uint64_t tba1;
-    uint64_t tba2;
-    uint64_t tba3;
-
+    uint64_t wsba[4];
+    uint64_t wsm[4];
+    uint64_t tba[4];
 
   public:
     TsunamiPChip(const std::string &name, Tsunami *t, Addr a,
                  MemoryController *mmu);
 
+    // @todo This hack does a quick and dirty translation of the PCI bus address to
+    //  a valid DMA address.  This is described in 10-10 of the Tsunami book, should be fixed
+    Addr translatePciToDma(Addr busAddr);
+
     virtual Fault read(MemReqPtr &req, uint8_t *data);
     virtual Fault write(MemReqPtr &req, const uint8_t *data);