SAMA5 OHCI: Use physical address and flush and/or invalidate data caches as necessary

ChangeLog

@@ -5330,7 +5330,7 @@
 	* arch/arm/src/sama5/sam_dmac.c:  Finally after many bugfixes (the
 	  last being caching issues), the SAMA5 DMA support has been
 	  verified (with SPI) (2013-8-9).
-	* arch/arm/src/sama5/sam_memories.c and .h:  Central logic for
+	* arch/arm/src/sama5/sam_memories.c and .h:  Centralize logic for
 	  conversions between physical and virtual addresses (2013-8-9).
 	* arch/arm/src/sama5/sam_hsmci.c and sam34/sam_hsmci.c:  Correct a
 	  race condition in the SAMA5 HSCMI driver:  The tranfer done
@@ -5404,3 +5404,7 @@
 	  passes information associated with the RHport implicitly.  The klugey,
 	  procedural alternative was to add the function address to every
 	  interface method (which I started to do but backed above) (2013-8-13).
+	* arch/arm/src/sama5/sam_memories.c and .h:  Extended logic so do
+	  conversions from physical to virtual addresses (2013-8-14).
+	* arch/arm/src/sama5/sam_ohci.c:  Add D cache contols and conversion
+	  between physical and virtual address (2013-8-14).

arch/arm/src/sama5/Kconfig

@@ -348,15 +348,15 @@ config SAMA5_OHCI
 if SAMA5_OHCI
 config SAMA5_OHCI_NEDS
 	int "Number of endpoint descriptors"
-	default 2
+	default 6
 
 config SAMA5_OHCI_NTDS
 	int "Number of transfer descriptors"
-	default 3
+	default 9
 
 config SAMA5_OHCI_TDBUFFERS
 	int "Number of transfer descriptor buffers"
-	default 2
+	default 6
 
 config SAMA5_OHCI_TDBUFSIZE
 	int "Size of one transfer descriptor buffer"

arch/arm/src/sama5/sam_memories.h

@@ -82,7 +82,7 @@ extern "C"
  *
  ****************************************************************************/
 
-uintptr_t sam_physregaddr(uintptr_t vregaddr);
+uintptr_t sam_physregaddr(uintptr_t virtregaddr);
 
 /****************************************************************************
  * Name: sam_physramaddr
@@ -93,7 +93,18 @@ uintptr_t sam_physregaddr(uintptr_t vregaddr);
  *
  ****************************************************************************/
 
-uintptr_t sam_physramaddr(uintptr_t vregaddr);
+uintptr_t sam_physramaddr(uintptr_t vramaddr);
+
+/****************************************************************************
+ * Name: sam_virtramaddr
+ *
+ * Description:
+ *   Give the phsical address of a RAM memory location, return the virtual
+ *   address of that location.
+ *
+ ****************************************************************************/
+
+uintptr_t sam_virtramaddr(uintptr_t physramaddr);
 
 #undef EXTERN
 #if defined(__cplusplus)