Changeset f6377f72 in mainline

Timestamp:

2009-03-17T21:08:23Z (16 years ago)

Author:

Jakub Jermar <jakub@…>

Branches:

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

Children:

16e9c476

Parents:

f3f7009

Message:

Update comments for the new hw_map(), which was committed in r4138.

File:

• kernel/arch/sparc64/src/mm/page.c (modified) (2 diffs)

kernel/arch/sparc64/src/mm/page.c

@@ -1 +1 @@
 /*
- * Copyright (c) 2005 Jakub Jermar
+ * Copyright (c) 2009 Jakub Jermar
  * All rights reserved.
  *
@@ -46 +46 @@
 void page_arch_init(void)
 {
-        if (config.cpu_active == 1) {
+        if (config.cpu_active == 1)
                 page_mapping_operations = &ht_mapping_operations;
-        }
 }
 
 /** Map memory-mapped device into virtual memory.
  *
- * So far, only DTLB is used to map devices into memory. Chances are that there
- * will be only a limited amount of devices that the kernel itself needs to
- * lock in DTLB.
+ * We are currently using identity mapping for mapping device registers.
  *
- * @param physaddr Physical address of the page where the device is located.
- *      Must be at least page-aligned.
- * @param size Size of the device's registers. Must not exceed 4M and must
- *      include extra space caused by the alignment.
+ * @param physaddr      Physical address of the page where the device is
+ *                      located.
+ * @param size          Size of the device's registers. This argument is
+ *                      ignored.
  *
- * @return Virtual address of the page where the device is mapped.
+ * @return              Virtual address of the page where the device is mapped.
  */
 uintptr_t hw_map(uintptr_t physaddr, size_t size)