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- /* MN10300 CPU cache invalidation routines, using automatic purge registers
- *
- * Copyright (C) 2011 Red Hat, Inc. All Rights Reserved.
- * Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public Licence
- * as published by the Free Software Foundation; either version
- * 2 of the Licence, or (at your option) any later version.
- */
- #include <linux/sys.h>
- #include <linux/linkage.h>
- #include <asm/cache.h>
- #include <asm/irqflags.h>
- #include <asm/cacheflush.h>
- #include "cache.inc"
- .am33_2
- .globl debugger_local_cache_flushinv_one
- ###############################################################################
- #
- # void debugger_local_cache_flushinv_one(u8 *addr)
- #
- # Invalidate one particular cacheline if it's in the icache
- #
- ###############################################################################
- ALIGN
- .globl debugger_local_cache_flushinv_one
- .type debugger_local_cache_flushinv_one,@function
- debugger_local_cache_flushinv_one:
- mov d0,a1
- mov CHCTR,a0
- movhu (a0),d0
- btst CHCTR_ICEN,d0
- beq mn10300_local_icache_inv_range_reg_end
- LOCAL_CLI_SAVE(d1)
- mov ICIVCR,a0
- # wait for the invalidator to quiesce
- setlb
- mov (a0),d0
- btst ICIVCR_ICIVBSY,d0
- lne
- # set the mask
- mov ~L1_CACHE_TAG_MASK,d0
- mov d0,(ICIVMR)
- # invalidate the cache line at the given address
- and ~L1_CACHE_TAG_MASK,a1
- or ICIVCR_ICI,a1
- mov a1,(a0)
- # wait for the invalidator to quiesce again
- setlb
- mov (a0),d0
- btst ICIVCR_ICIVBSY,d0
- lne
- LOCAL_IRQ_RESTORE(d1)
- mn10300_local_icache_inv_range_reg_end:
- ret [],0
- .size debugger_local_cache_flushinv_one,.-debugger_local_cache_flushinv_one
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