xnu-344.23.tar.gz

[apple/xnu.git] / osfmk / i386 / loose_ends.c

diff --git a/osfmk/i386/loose_ends.c b/osfmk/i386/loose_ends.c
index e64faedb222a2f25a58726e9052e9a31991b9f75..b0cd27fffdea95a0cd901f63905aa54f6ab5336c 100644 (file)
--- a/osfmk/i386/loose_ends.c
+++ b/osfmk/i386/loose_ends.c
@@ -64,6 +64,49 @@
         */
 
 
+/*
+ * copy 'size' bytes from physical to physical address
+ * the caller must validate the physical ranges 
+ *
+ * if flush_action == 0, no cache flush necessary
+ * if flush_action == 1, flush the source
+ * if flush_action == 2, flush the dest
+ * if flush_action == 3, flush both source and dest
+ */
+
+kern_return_t copyp2p(vm_offset_t source, vm_offset_t dest, unsigned int size, unsigned int flush_action) {
+
+        switch(flush_action) {
+       case 1:
+               flush_dcache(source, size, 1);
+               break;
+       case 2:
+               flush_dcache(dest, size, 1);
+               break;
+       case 3:
+               flush_dcache(source, size, 1);
+               flush_dcache(dest, size, 1);
+               break;
+
+       }
+        bcopy_phys((char *)source, (char *)dest, size);        /* Do a physical copy */
+
+        switch(flush_action) {
+       case 1:
+               flush_dcache(source, size, 1);
+               break;
+       case 2:
+               flush_dcache(dest, size, 1);
+               break;
+       case 3:
+               flush_dcache(source, size, 1);
+               flush_dcache(dest, size, 1);
+               break;
+
+       }
+}
+
+
 
 /*
  *              Copies data from a physical page to a virtual page.  This is used to