diff options
author | Michael Hennerich <michael.hennerich@analog.com> | 2009-10-14 09:43:53 -0400 |
---|---|---|
committer | Mike Frysinger <vapier@gentoo.org> | 2009-12-15 00:14:23 -0500 |
commit | aaa225e0aa96691964a5f0518c3c16b954d400cb (patch) | |
tree | 00837d25614026cf838c7b0e80bdcc1a9ddf939e /Documentation/blackfin | |
parent | 17a1b5e3748f2d890d24c7eb3b1c11de2e0b9a00 (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')
-rw-r--r-- | Documentation/blackfin/00-INDEX | 3 | ||||
-rw-r--r-- | Documentation/blackfin/cache-lock.txt | 48 | ||||
-rw-r--r-- | Documentation/blackfin/cachefeatures.txt | 10 |
3 files changed, 0 insertions, 61 deletions
diff --git a/Documentation/blackfin/00-INDEX b/Documentation/blackfin/00-INDEX index d6840a91e1e1..c34e12440fec 100644 --- a/Documentation/blackfin/00-INDEX +++ b/Documentation/blackfin/00-INDEX | |||
@@ -1,9 +1,6 @@ | |||
1 | 00-INDEX | 1 | 00-INDEX |
2 | - This file | 2 | - This file |
3 | 3 | ||
4 | cache-lock.txt | ||
5 | - HOWTO for blackfin cache locking. | ||
6 | |||
7 | cachefeatures.txt | 4 | cachefeatures.txt |
8 | - Supported cache features. | 5 | - Supported cache features. |
9 | 6 | ||
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 | |||
18 | How to lock your code in cache in uClinux/blackfin | ||
19 | -------------------------------------------------- | ||
20 | |||
21 | There are only a few steps required to lock your code into the cache. | ||
22 | Currently you can lock the code by Way. | ||
23 | |||
24 | Below are the interface provided for locking the cache. | ||
25 | |||
26 | |||
27 | 1. cache_grab_lock(int Ways); | ||
28 | |||
29 | This function grab the lock for locking your code into the cache specified | ||
30 | by Ways. | ||
31 | |||
32 | |||
33 | 2. cache_lock(int Ways); | ||
34 | |||
35 | This function should be called after your critical code has been executed. | ||
36 | Once the critical code exits, the code is now loaded into the cache. This | ||
37 | function locks the code into the cache. | ||
38 | |||
39 | |||
40 | So, 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 | |||
48 | Where WAY0_L signifies WAY0 locking. | ||
diff --git a/Documentation/blackfin/cachefeatures.txt b/Documentation/blackfin/cachefeatures.txt index 0fbec23becb5..75de51f94515 100644 --- a/Documentation/blackfin/cachefeatures.txt +++ b/Documentation/blackfin/cachefeatures.txt | |||
@@ -41,16 +41,6 @@ | |||
41 | icplb_flush(); | 41 | icplb_flush(); |
42 | dcplb_flush(); | 42 | dcplb_flush(); |
43 | 43 | ||
44 | - Locking the cache. | ||
45 | |||
46 | cache_grab_lock(); | ||
47 | cache_lock(); | ||
48 | |||
49 | Please refer linux-2.6.x/Documentation/blackfin/cache-lock.txt for how to | ||
50 | lock the cache. | ||
51 | |||
52 | Locking the cache is optional feature. | ||
53 | |||
54 | - Miscellaneous cache functions. | 44 | - Miscellaneous cache functions. |
55 | 45 | ||
56 | flush_cache_all(); | 46 | flush_cache_all(); |