Changeset 166 for soft/giet_vm/sys/common.c

Timestamp:

Jul 6, 2012, 10:13:16 AM (12 years ago)

Author:

alain

Message:

Introducing support for IOMMU

File:

• soft/giet_vm/sys/common.c (modified) (2 diffs)

soft/giet_vm/sys/common.c

@@ -112 +112 @@
     unsigned int line_size;
 
-    /*
-     * compute data cache line size based on config register (bits 12:10)
-     */
+    // compute data cache line size based on config register (bits 12:10)
     asm volatile("mfc0 %0, $16, 1" : "=r"(tmp));
     tmp = ((tmp>>10) & 0x7);
     line_size = 2 << tmp;
 
-    /* iterate on cache lines to invalidate each one of them */
+    // iterate on cache lines 
     for (i = 0; i < size; i += line_size)
     {
@@ -160 +158 @@
         val /= 16;
     }
+}
+///////////////////////////////////////////////////////////////////////////////////
+//      _get_ptpr()
+// Access CP2 and returns PTPR register.
+///////////////////////////////////////////////////////////////////////////////////
+inline unsigned int _get_ptpr()
+{
+    unsigned int ret;
+    asm volatile("mfc2 %0, $0" : "=r"(ret));
+    return ret;
 }
 ///////////////////////////////////////////////////////////////////////////////////