arch/ia64/sn/kernel/sn_asm.S

   1 /*
   2  * Copyright (c) 2000-2002 Silicon Graphics, Inc.  All Rights Reserved.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms of version 2 of the GNU General Public License
   6  * as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope that it would be useful, but
   9  * WITHOUT ANY WARRANTY; without even the implied warranty of
  10  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  11  *
  12  * Further, this software is distributed without any warranty that it is
  13  * free of the rightful claim of any third person regarding infringement
  14  * or the like.  Any license provided herein, whether implied or
  15  * otherwise, applies only to this software file.  Patent licenses, if
  16  * any, provided herein do not apply to combinations of this program with
  17  * other software, or any other product whatsoever.
  18  *
  19  * You should have received a copy of the GNU General Public
  20  * License along with this program; if not, write the Free Software
  21  * Foundation, Inc., 59 Temple Place - Suite 330, Boston MA 02111-1307, USA.
  22  *
  23  * Contact information:  Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
  24  * Mountain View, CA  94043, or:
  25  *
  26  * http://www.sgi.com
  27  *
  28  * For further information regarding this notice, see:
  29  *
  30  * http://oss.sgi.com/projects/GenInfo/NoticeExplan
  31  */
  32
  33 #include <linux/config.h>
  34 #ifdef CONFIG_IA64_SGI_AUTOTEST
  35
  36 // Testing only.
  37 // Routine will cause MCAs
  38 //   zzzmca(n)
  39 //      n=0 MCA via duplicate TLB dropin
  40 //      n=1 MCA via read of garbage address
  41 //      n=2 MCA via lfetch read of garbage address
  42 //
  43
  44 #define ITIR(key, ps)           ((key<<8) | (ps<<2))
  45 #define TLB_PAGESIZE            28                      // Use 256MB pages for now.
  46
  47                         .global zzzmca
  48                         .proc   zzzmca
  49 zzzmca:
  50                         alloc   loc4       = ar.pfs,2,8,1,0;;
  51                         cmp.ne  p6,p0=r32,r0;;
  52                         movl    r2=0x2dead
  53                         movl    r3=0x3dead
  54                         movl    r15=0x15dead
  55                         movl    r16=0x16dead
  56                         movl    r31=0x31dead
  57                         movl    loc0=0x34beef
  58                         movl    loc1=0x35beef
  59                         movl    loc2=0x36beef
  60                         movl    loc3=0x37beef
  61                         movl    out0=0x42beef
  62
  63                         movl    r20=0x32feed;;
  64                         mov     ar32=r20
  65                         movl    r20=0x36feed;;
  66                         mov     ar36=r20
  67                         movl    r20=0x65feed;;
  68                         mov     ar65=r20
  69                         movl    r20=0x66feed;;
  70                         mov     ar66=r20
  71
  72 (p6)                    br.cond.sptk    1f
  73
  74                         rsm      0x2000;;
  75                         srlz.d;
  76                         mov      r11      = 5
  77                         mov      r3       = ITIR(0,TLB_PAGESIZE);;
  78                         mov      cr.itir  = r3
  79                         mov      r10      = 0;;
  80                         itr.d    dtr[r11] = r10;;
  81                         mov      r11      = 6
  82
  83                         itr.d    dtr[r11] = r10;;
  84                         br      9f
  85
  86 1:
  87                         cmp.eq  p6,p7=1,r32
  88 #ifdef CONFIG_IA64_SGI_SN1
  89                         movl    r8=0xe00000fe00000048;;
  90 #else
  91                         movl    r8=0xe0007fb000000048;;
  92 #endif
  93                  (p6)   ld8     r9=[r8]
  94                  (p7)   lfetch.fault.nt2  [r8]
  95                         ;;
  96                         mf
  97                         ;;
  98                         mf.a
  99                         ;;
 100                         srlz.d
 101
 102 9:                      mov     ar.pfs=loc4
 103                         br.ret.sptk     rp
 104
 105                         .endp   zzzmca
 106
 107 #endif