arch/mips/sni/pcimt_scache.c

   1 /* $Id: pcimt_scache.c,v 1.4 1999/01/04 16:03:59 ralf Exp $
   2  *
   3  * arch/mips/sni/pcimt_scache.c
   4  *
   5  * This file is subject to the terms and conditions of the GNU General Public
   6  * License.  See the file "COPYING" in the main directory of this archive
   7  * for more details.
   8  *
   9  * Copyright (c) 1997, 1998 by Ralf Baechle
  10  */
  11 #include <linux/init.h>
  12 #include <linux/kernel.h>
  13 #include <asm/bcache.h>
  14 #include <asm/sni.h>
  15
  16 #define cacheconf (*(volatile unsigned int *)PCIMT_CACHECONF)
  17 #define invspace (*(volatile unsigned int *)PCIMT_INVSPACE)
  18
  19 __initfunc(void sni_pcimt_sc_init(void))
  20 {
  21         unsigned int scsiz, sc_size;
  22
  23         scsiz = cacheconf & 7;
  24         if (scsiz == 0) {
  25                 printk("Second level cache is deactived.\n");
  26                 return;
  27         }
  28         if (scsiz >= 6) {
  29                 printk("Invalid second level cache size configured, "
  30                        "deactivating second level cache.\n");
  31                 cacheconf = 0;
  32                 return;
  33         }
  34
  35         sc_size = 128 << scsiz;
  36         printk("%dkb second level cache detected, deactivating.\n", sc_size);
  37         cacheconf = 0;
  38 }