Changeset 7c3e482 in mainline

Timestamp:

2011-12-09T23:15:30Z (12 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

404be7c

Parents:

c24b272f

Message:

Create arena for kernel non-identity mapping and
provide km wrappers around ra_alloc() and ra_free().

Location:

kernel/generic

Files:

• include/mm/km.h (modified) (1 diff)
• src/mm/km.c (modified) (3 diffs)

kernel/generic/include/mm/km.h

@@ -43 +43 @@
 extern void km_non_identity_span_add(uintptr_t, size_t);
 
+extern uintptr_t km_page_alloc(size_t, size_t);
+extern void km_page_free(uintptr_t, size_t);
+
 #endif
 

kernel/generic/src/mm/km.c

@@ -40 +40 @@
 #include <config.h>
 #include <typedefs.h>
+#include <lib/ra.h>
+#include <debug.h>
+
+static ra_arena_t *km_ni_arena;
 
 /** Architecture dependent setup of identity-mapped kernel memory. */
@@ -51 +55 @@
 void km_non_identity_init(void)
 {
+        km_ni_arena = ra_arena_create();
+        ASSERT(km_ni_arena != NULL);
         km_non_identity_arch_init();
         config.non_identity_configured = true;
@@ -57 +63 @@
 void km_non_identity_span_add(uintptr_t base, size_t size)
 {
+        bool span_added;
+
+        span_added = ra_span_add(km_ni_arena, base, size);
+        ASSERT(span_added);
 }
+
+uintptr_t km_page_alloc(size_t size, size_t align)
+{
+        return ra_alloc(km_ni_arena, size, align);
+}
+
+void km_page_free(uintptr_t page, size_t size)
+{
+        ra_free(km_ni_arena, page, size);
+}
+
 
 /** @}