Changeset 1affcdf3 in mainline for uspace/lib/c/generic/as.c

Timestamp:

2011-06-10T19:33:41Z (13 years ago)

Author:

Maurizio Lombardi <m.lombardi85@…>

Branches:

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

Children:

1878386

Parents:

13ecdac9 (diff), 79a141a (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge mainline changes

File:

• uspace/lib/c/generic/as.c (modified) (5 diffs)

uspace/lib/c/generic/as.c

@@ -35 +35 @@
 #include <as.h>
 #include <libc.h>
+#include <errno.h>
 #include <unistd.h>
 #include <align.h>
@@ -51 +52 @@
  *
  */
-void *as_area_create(void *address, size_t size, int flags)
+void *as_area_create(void *address, size_t size, unsigned int flags)
 {
         return (void *) __SYSCALL3(SYS_AS_AREA_CREATE, (sysarg_t) address,
@@ -67 +68 @@
  *
  */
-int as_area_resize(void *address, size_t size, int flags)
+int as_area_resize(void *address, size_t size, unsigned int flags)
 {
         return __SYSCALL3(SYS_AS_AREA_RESIZE, (sysarg_t) address,
@@ -95 +96 @@
  *
  */
-int as_area_change_flags(void *address, int flags)
+int as_area_change_flags(void *address, unsigned int flags)
 {
         return __SYSCALL2(SYS_AS_AREA_CHANGE_FLAGS, (sysarg_t) address,
@@ -114 +115 @@
 }
 
+/** Find mapping to physical address.
+ *
+ * @param address Virtual address in question (virtual).
+ * @param[out] frame Frame address (physical).
+ * @return Error code.
+ * @retval EOK No error, @p frame holds the translation.
+ * @retval ENOENT Mapping not found.
+ */
+int as_get_physical_mapping(void *address, uintptr_t *frame)
+{
+        uintptr_t tmp_frame;
+        uintptr_t virt = (uintptr_t) address;
+        
+        int rc = (int) __SYSCALL2(SYS_PAGE_FIND_MAPPING,
+            (sysarg_t) virt, (sysarg_t) &tmp_frame);
+        if (rc != EOK) {
+                return rc;
+        }
+        
+        if (frame != NULL) {
+                *frame = tmp_frame;
+        }
+        
+        return EOK;
+}
+
 /** @}
  */