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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 @@
+/*
+ * arch/mips/sni/pcimt_scache.c
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file "COPYING" in the main directory of this archive
+ * for more details.
+ *
+ * Copyright (c) 1997, 1998 by Ralf Baechle
+ */
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <asm/bcache.h>
+#include <asm/sni.h>
+
+#define cacheconf (*(volatile unsigned int *)PCIMT_CACHECONF)
+#define invspace (*(volatile unsigned int *)PCIMT_INVSPACE)
+
+void __init sni_pcimt_sc_init(void)
+{
+ unsigned int scsiz, sc_size;
+
+ scsiz = cacheconf & 7;
+ if (scsiz == 0) {
+ printk("Second level cache is deactived.\n");
+ return;
+ }
+ if (scsiz >= 6) {
+ printk("Invalid second level cache size configured, "
+ "deactivating second level cache.\n");
+ cacheconf = 0;
+ return;
+ }
+
+ sc_size = 128 << scsiz;
+ printk("%dkb second level cache detected, deactivating.\n", sc_size);
+ cacheconf = 0;
+}