Changeset 298 for soft/giet_vm/giet_drivers/iob_driver.c

Timestamp:

Apr 3, 2014, 2:00:10 PM (10 years ago)

Author:

alain

Message:

Introducing pic driver and rdk driver

File:

• soft/giet_vm/giet_drivers/iob_driver.c (modified) (2 diffs)

soft/giet_vm/giet_drivers/iob_driver.c

@@ -8 +8 @@
 // This driver supports the TSAR vci_io_bridge, that is a bridge to access
 // The external peripherals, implementing an IO_MMU.
+// This component can be instanciated in more than one cluster.
 ///////////////////////////////////////////////////////////////////////////////////
 // The seg_iob_base virtual base addresses must be defined in giet_vsegs.ld file.
+// The physical base address is supposed to be (cluster_xy << 32) | seg_iob_base.
 ///////////////////////////////////////////////////////////////////////////////////
 
@@ -24 +26 @@
 #endif
 
+
 ///////////////////////////////////////////////////////////////////////////////
-//      _iob_inval_tlb_entry()
+// This low level function returns the value contained in register "index"
+// in the IOB component contained in cluster "cluster_xy"
+///////////////////////////////////////////////////////////////////////////////
+unsigned int _iob_get_register( unsigned int cluster_xy,   // cluster index
+                                unsigned int index )       // register index
+{
+    unsigned long long paddr = (unsigned long long)(unsigned int)&seg_iob_base + 
+                               ((unsigned long long)cluster_xy << 32) +
+                               ((unsigned long long)index << 2);
+
+    return _physical_read( paddr );
+}
+///////////////////////////////////////////////////////////////////////////////
+// This low level function sets a new value in register "index"
+// in the IOB component contained in cluster "cluster_xy"
+///////////////////////////////////////////////////////////////////////////////
+void _iob_set_register( unsigned int cluster_xy,       // cluster index
+                        unsigned int index,            // register index
+                        unsigned int value )           // value to be written
+{
+    unsigned long long paddr = (unsigned long long)(unsigned int)&seg_iob_base + 
+                               ((unsigned long long)cluster_xy << 32) +
+                               ((unsigned long long)index << 2);
+
+    _physical_write( paddr, value );
+}
+
+
+
+
+///////////////////////////////////////////////////////////////////////////////
 // This function invalidates a TLB entry identified by a virtual address.
-// Returns 0 if success, returns 1 if failure
 ///////////////////////////////////////////////////////////////////////////////
-unsigned int _iob_inval_tlb_entry( unsigned int vaddr )
+void _iob_inval_tlb_entry( unsigned int cluster_xy,
+                           unsigned int vaddr )
 {
-#if USE_IOB
+    _iob_set_register( cluster_xy,
+                       IOB_INVAL_PTE,
+                       vaddr );
+}
 
-    unsigned int * iob_address = (unsigned int *) &seg_iob_base ;
-    iob_address[IOB_INVAL_PTE] = vaddr;
-    return 0; 
+///////////////////////////////////////////////////////////////////////////////
+// This function sets a new value in IOB_IOMMU_PTPR register.
+///////////////////////////////////////////////////////////////////////////////
+void _iob_set_iommu_ptpr( unsigned int cluster_xy,
+                          unsigned int value )
+{
+    _iob_set_register( cluster_xy,
+                       IOB_IOMMU_PTPR,
+                       value );
+}
 
-#else
+///////////////////////////////////////////////////////////////////////////////
+// This function sets a new value in IOB_XICU_BASE register.
+///////////////////////////////////////////////////////////////////////////////
+void _iob_set_xicu_base( unsigned int cluster_xy,
+                         unsigned int value )
+{
+    _iob_set_register( cluster_xy,
+                       IOB_XICU_BASE,
+                       value );
+}
 
-    return 1;
+///////////////////////////////////////////////////////////////////////////////
+// This function sets a new value in IOB_XICU_SIZE register.
+///////////////////////////////////////////////////////////////////////////////
+void _iob_set_xicu_size( unsigned int cluster_xy,
+                         unsigned int value )
+{
+    _iob_set_register( cluster_xy,
+                       IOB_XICU_SIZE,
+                       value );
+}
 
-#endif
-}