Changeset ff3a34b in mainline for kernel/generic/src/lib/rd.c

Timestamp:

2007-06-01T14:15:42Z (18 years ago)

Author:

Martin Decky <martin@…>

Branches:

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

Children:

ea7890e7

Parents:

60133d0

Message:

initial merge of branches/fs
(not finished, huge cleanup is needed)

File:

• kernel/generic/src/lib/rd.c (modified) (4 diffs)

kernel/generic/src/lib/rd.c

@@ -43 +43 @@
 #include <sysinfo/sysinfo.h>
 #include <ddi/ddi.h>
+#include <print.h>
+#include <align.h>
 
 static parea_t rd_parea;                /**< Physical memory area for rd. */
 
+/**
+ * RAM disk initialization routine. At this point, the RAM disk memory is shared
+ * and information about the share is provided as sysinfo values to the userspace
+ * tasks.
+ */  
 int init_rd(rd_header * header, size_t size)
 {
@@ -75 +82 @@
                 return RE_UNSUPPORTED;
         
+        if (dsize % FRAME_SIZE)
+                return RE_UNSUPPORTED;
+
         if (hsize > size)
                 return RE_INVALID;
@@ -81 +91 @@
                 dsize = size - hsize;
         
-        rd_parea.pbase = KA2PA((void *) header + hsize);
+        rd_parea.pbase = ALIGN_DOWN((uintptr_t) KA2PA((void *) header + hsize), FRAME_SIZE);
         rd_parea.vbase = (uintptr_t) ((void *) header + hsize);
         rd_parea.frames = SIZE2FRAMES(dsize);
@@ -88 +98 @@
 
         sysinfo_set_item_val("rd", NULL, true);
+        sysinfo_set_item_val("rd.header_size", NULL, hsize);    
         sysinfo_set_item_val("rd.size", NULL, dsize);
         sysinfo_set_item_val("rd.address.physical", NULL, (unative_t)