arch/frv/lib/cache.S

   1 /* cache.S: cache managment routines
   2  *
   3  * Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
   4  * Written by David Howells (dhowells@redhat.com)
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version
   9  * 2 of the License, or (at your option) any later version.
  10  */
  11
  12 #include <asm/spr-regs.h>
  13 #include <asm/cache.h>
  14
  15         .text
  16         .p2align        4
  17
  18 ###############################################################################
  19 #
  20 # Write back a range of dcache
  21 # - void frv_dcache_writeback(unsigned long start [GR8], unsigned long size [GR9])
  22 #
  23 ###############################################################################
  24         .globl          frv_dcache_writeback
  25         .type           frv_dcache_writeback,@function
  26 frv_dcache_writeback:
  27         andi            gr8,~(L1_CACHE_BYTES-1),gr8
  28
  29 2:      dcf             @(gr8,gr0)
  30         addi            gr8,#L1_CACHE_BYTES,gr8
  31         cmp             gr9,gr8,icc0
  32         bhi             icc0,#2,2b
  33
  34         membar
  35         bralr
  36         .size           frv_dcache_writeback, .-frv_dcache_writeback
  37
  38 ##############################################################################
  39 #
  40 # Invalidate a range of dcache and icache
  41 # - void frv_cache_invalidate(unsigned long start [GR8], unsigned long end [GR9]);
  42 #
  43 ###############################################################################
  44         .globl          frv_cache_invalidate
  45         .type           frv_cache_invalidate,@function
  46 frv_cache_invalidate:
  47         andi            gr8,~(L1_CACHE_BYTES-1),gr8
  48
  49 2:      dci             @(gr8,gr0)
  50         ici             @(gr8,gr0)
  51         addi            gr8,#L1_CACHE_BYTES,gr8
  52         cmp             gr9,gr8,icc0
  53         bhi             icc0,#2,2b
  54
  55         membar
  56         bralr
  57         .size           frv_cache_invalidate, .-frv_cache_invalidate
  58
  59 ##############################################################################
  60 #
  61 # Invalidate a range of icache
  62 # - void frv_icache_invalidate(unsigned long start [GR8], unsigned long end [GR9]);
  63 #
  64 ###############################################################################
  65         .globl          frv_icache_invalidate
  66         .type           frv_icache_invalidate,@function
  67 frv_icache_invalidate:
  68         andi            gr8,~(L1_CACHE_BYTES-1),gr8
  69
  70 2:      ici             @(gr8,gr0)
  71         addi            gr8,#L1_CACHE_BYTES,gr8
  72         cmp             gr9,gr8,icc0
  73         bhi             icc0,#2,2b
  74
  75         membar
  76         bralr
  77         .size           frv_icache_invalidate, .-frv_icache_invalidate
  78
  79 ###############################################################################
  80 #
  81 # Write back and invalidate a range of dcache and icache
  82 # - void frv_cache_wback_inv(unsigned long start [GR8], unsigned long end [GR9])
  83 #
  84 ###############################################################################
  85         .globl          frv_cache_wback_inv
  86         .type           frv_cache_wback_inv,@function
  87 frv_cache_wback_inv:
  88         andi            gr8,~(L1_CACHE_BYTES-1),gr8
  89
  90 2:      dcf             @(gr8,gr0)
  91         ici             @(gr8,gr0)
  92         addi            gr8,#L1_CACHE_BYTES,gr8
  93         cmp             gr9,gr8,icc0
  94         bhi             icc0,#2,2b
  95
  96         membar
  97         bralr
  98         .size           frv_cache_wback_inv, .-frv_cache_wback_inv