Changeset 1c01e6c in mainline for kernel/generic/src/mm/page.c

Timestamp:

2011-11-26T16:37:37Z (14 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

056ddc30

Parents:

9aed144

Message:

Replace hw_map() implementations with one generic.
Currently the kernel is broken because of missing page allocator.

File:

• kernel/generic/src/mm/page.c (modified) (2 diffs)

kernel/generic/src/mm/page.c

@@ -74 +74 @@
 #include <syscall/copy.h>
 #include <errno.h>
+#include <align.h>
 
 /** Virtual operations for page subsystem. */
@@ -175 +176 @@
         return page_mapping_operations->mapping_find(as, page, nolock);
 }
+
+uintptr_t hw_map(uintptr_t physaddr, size_t size)
+{
+        uintptr_t virtaddr = (uintptr_t) NULL;  // FIXME
+        pfn_t i;
+
+        page_table_lock(AS_KERNEL, true);
+        for (i = 0; i < ADDR2PFN(ALIGN_UP(size, PAGE_SIZE)); i++) {
+                uintptr_t addr = PFN2ADDR(i);
+                page_mapping_insert(AS_KERNEL, virtaddr + addr, physaddr + addr,
+                    PAGE_NOT_CACHEABLE | PAGE_WRITE);
+        }
+        page_table_unlock(AS_KERNEL, true);
+        
+        return virtaddr;
+}
+
 
 /** Syscall wrapper for getting mapping of a virtual page.