Changeset c1982e45 in mainline for arch/sparc64/src/mm/page.c

Timestamp:

2006-05-20T21:11:08Z (19 years ago)

Author:

Martin Decky <martin@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

125e944

Parents:

1068f6a

Message:

make hardware memory mapping more generic

File:

• arch/sparc64/src/mm/page.c (modified) (2 diffs)

arch/sparc64/src/mm/page.c

@@ -28 +28 @@
 
 #include <arch/mm/page.h>
+#include <arch/mm/tlb.h>
 #include <genarch/mm/page_ht.h>
+#include <mm/frame.h>
+#include <bitops.h>
 
 void page_arch_init(void)
@@ -34 +37 @@
         page_mapping_operations = &ht_mapping_operations;
 }
+
+__address hw_map(__address physaddr, size_t size)
+{
+        unsigned int order;
+        
+        if (size <= FRAME_SIZE)
+                order = 0;
+        else
+                order = (fnzb32(size - 1) + 1) - FRAME_WIDTH;
+        
+        __address virtaddr = PA2KA(PFN2ADDR(frame_alloc(order, FRAME_KA)));
+        
+        dtlb_insert_mapping(virtaddr, physaddr, PAGESIZE_512K, true, false);
+        dtlb_insert_mapping(virtaddr + 512 * 1024, physaddr + 512 * 1024, PAGESIZE_512K, true, false);
+        
+        return virtaddr;
+}