aboutsummaryrefslogtreecommitdiffstats
path: root/Documentation/blackfin/cache-lock.txt
diff options
context:
space:
mode:
authorMichael Hennerich <michael.hennerich@analog.com>2009-10-14 09:43:53 -0400
committerMike Frysinger <vapier@gentoo.org>2009-12-15 00:14:23 -0500
commitaaa225e0aa96691964a5f0518c3c16b954d400cb (patch)
tree00837d25614026cf838c7b0e80bdcc1a9ddf939e /Documentation/blackfin/cache-lock.txt
parent17a1b5e3748f2d890d24c7eb3b1c11de2e0b9a00 (diff)
Blackfin: punt cache lock documentation
The cache lock code was unused and punted, so punt the documentation too. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'Documentation/blackfin/cache-lock.txt')
-rw-r--r--Documentation/blackfin/cache-lock.txt48
1 files changed, 0 insertions, 48 deletions
diff --git a/Documentation/blackfin/cache-lock.txt b/Documentation/blackfin/cache-lock.txt
deleted file mode 100644
index 88ba1e6c31c3..000000000000
--- a/Documentation/blackfin/cache-lock.txt
+++ /dev/null
@@ -1,48 +0,0 @@
1/*
2 * File: Documentation/blackfin/cache-lock.txt
3 * Based on:
4 * Author:
5 *
6 * Created:
7 * Description: This file contains the simple DMA Implementation for Blackfin
8 *
9 * Rev: $Id: cache-lock.txt 2384 2006-11-01 04:12:43Z magicyang $
10 *
11 * Modified:
12 * Copyright 2004-2006 Analog Devices Inc.
13 *
14 * Bugs: Enter bugs at http://blackfin.uclinux.org/
15 *
16 */
17
18How to lock your code in cache in uClinux/blackfin
19--------------------------------------------------
20
21There are only a few steps required to lock your code into the cache.
22Currently you can lock the code by Way.
23
24Below are the interface provided for locking the cache.
25
26
271. cache_grab_lock(int Ways);
28
29This function grab the lock for locking your code into the cache specified
30by Ways.
31
32
332. cache_lock(int Ways);
34
35This function should be called after your critical code has been executed.
36Once the critical code exits, the code is now loaded into the cache. This
37function locks the code into the cache.
38
39
40So, the example sequence will be:
41
42 cache_grab_lock(WAY0_L); /* Grab the lock */
43
44 critical_code(); /* Execute the code of interest */
45
46 cache_lock(WAY0_L); /* Lock the cache */
47
48Where WAY0_L signifies WAY0 locking.