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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/mips/sni/pcimt_scache.c
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/mips/sni/pcimt_scache.c')
-rw-r--r--arch/mips/sni/pcimt_scache.c37
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/mips/sni/pcimt_scache.c b/arch/mips/sni/pcimt_scache.c
new file mode 100644
index 000000000000..a59d457fa8b1
--- /dev/null
+++ b/arch/mips/sni/pcimt_scache.c
@@ -0,0 +1,37 @@
1/*
2 * arch/mips/sni/pcimt_scache.c
3 *
4 * This file is subject to the terms and conditions of the GNU General Public
5 * License. See the file "COPYING" in the main directory of this archive
6 * for more details.
7 *
8 * Copyright (c) 1997, 1998 by Ralf Baechle
9 */
10#include <linux/init.h>
11#include <linux/kernel.h>
12#include <asm/bcache.h>
13#include <asm/sni.h>
14
15#define cacheconf (*(volatile unsigned int *)PCIMT_CACHECONF)
16#define invspace (*(volatile unsigned int *)PCIMT_INVSPACE)
17
18void __init sni_pcimt_sc_init(void)
19{
20 unsigned int scsiz, sc_size;
21
22 scsiz = cacheconf & 7;
23 if (scsiz == 0) {
24 printk("Second level cache is deactived.\n");
25 return;
26 }
27 if (scsiz >= 6) {
28 printk("Invalid second level cache size configured, "
29 "deactivating second level cache.\n");
30 cacheconf = 0;
31 return;
32 }
33
34 sc_size = 128 << scsiz;
35 printk("%dkb second level cache detected, deactivating.\n", sc_size);
36 cacheconf = 0;
37}