Changeset b93d637 in mainline for uspace

Timestamp:

2011-01-21T13:54:04Z (14 years ago)

Author:

Vojtech Horky <vojtechhorky@…>

Branches:

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

Children:

aa9f0a4, c979591b

Parents:

85d0cf8

Message:

Add syscall for getting physical address

Location:

uspace

Files:

• app/tester/Makefile (modified) (1 diff)
• app/tester/mm/mapping1.c (added)
• app/tester/mm/mapping1.def (added)
• app/tester/tester.c (modified) (1 diff)
• app/tester/tester.h (modified) (1 diff)
• lib/c/generic/as.c (modified) (2 diffs)
• lib/c/include/as.h (modified) (1 diff)

uspace/app/tester/Makefile

@@ -53 +53 @@
         loop/loop1.c \
         mm/malloc1.c \
+        mm/mapping1.c \
         hw/misc/virtchar1.c \
         hw/serial/serial1.c

uspace/app/tester/tester.c

@@ -62 +62 @@
 #include "loop/loop1.def"
 #include "mm/malloc1.def"
+#include "mm/mapping1.def"
 #include "hw/serial/serial1.def"
 #include "adt/usbaddrkeep.def"

uspace/app/tester/tester.h

@@ -79 +79 @@
 extern const char *test_loop1(void);
 extern const char *test_malloc1(void);
+extern const char *test_mapping1(void);
 extern const char *test_serial1(void);
 extern const char *test_usbaddrkeep(void);

uspace/lib/c/generic/as.c

@@ -35 +35 @@
 #include <as.h>
 #include <libc.h>
+#include <errno.h>
 #include <unistd.h>
 #include <align.h>
@@ -128 +129 @@
 }
 
+/** 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;
+}
+
 /** @}
  */

uspace/lib/c/include/as.h

@@ -47 +47 @@
 extern void *set_maxheapsize(size_t mhs);
 extern void * as_get_mappable_page(size_t sz);
+extern int as_get_physical_mapping(void *address, uintptr_t *frame);
 
 #endif