Changeset c101dc0 in mainline

Timestamp:

2014-02-03T08:01:45Z (10 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

a17cced

Parents:

0dd022ec

Message:

Implement dmamem_unmap_anonymous().

Location:

kernel/generic

Files:

• include/mm/as.h (modified) (1 diff)
• src/ddi/ddi.c (modified) (3 diffs)
• src/mm/backend_phys.c (modified) (1 diff)

kernel/generic/include/mm/as.h

@@ -169 +169 @@
                 uintptr_t base;
                 size_t frames;
+                bool anonymous;
         };
 } mem_backend_data_t;

kernel/generic/src/ddi/ddi.c

@@ -121 +121 @@
         backend_data.base = phys;
         backend_data.frames = pages;
+        backend_data.anonymous = false;
         
         /*
@@ -336 +337 @@
         backend_data.base = *phys;
         backend_data.frames = frames;
+        backend_data.anonymous = true;
         
         if (!as_area_create(TASK->as, map_flags, size,
@@ -354 +356 @@
 NO_TRACE static int dmamem_unmap_anonymous(uintptr_t virt)
 {
-        // TODO: implement unlocking & unmap
-        return EOK;
+        return as_area_destroy(TASK->as, virt);
 }
 

kernel/generic/src/mm/backend_phys.c

@@ -92 +92 @@
 void phys_destroy(as_area_t *area)
 {
-        /* Nothing to do. */
+        mem_backend_data_t *data = &area->backend_data;
+
+        if (data->anonymous)
+                frame_free_noreserve(data->base, data->frames);
 }