diff options
Diffstat (limited to 'arch/mn10300/mm/cache-dbg-flush-by-reg.S')
| -rw-r--r-- | arch/mn10300/mm/cache-dbg-flush-by-reg.S | 160 |
1 files changed, 0 insertions, 160 deletions
diff --git a/arch/mn10300/mm/cache-dbg-flush-by-reg.S b/arch/mn10300/mm/cache-dbg-flush-by-reg.S deleted file mode 100644 index a775ea5..0000000 --- a/arch/mn10300/mm/cache-dbg-flush-by-reg.S +++ /dev/null @@ -1,160 +0,0 @@ -/* 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/smp.h> -#include <asm/page.h> -#include <asm/cache.h> -#include <asm/irqflags.h> -#include <asm/cacheflush.h> -#include "cache.inc" - - .am33_2 - -############################################################################### -# -# void debugger_local_cache_flushinv(void) -# Flush the entire data cache back to RAM and invalidate the icache -# -############################################################################### - ALIGN - .globl debugger_local_cache_flushinv - .type debugger_local_cache_flushinv,@function -debugger_local_cache_flushinv: - # - # firstly flush the dcache - # - movhu (CHCTR),d0 - btst CHCTR_DCEN|CHCTR_ICEN,d0 - beq debugger_local_cache_flushinv_end - - mov DCPGCR,a0 - - mov epsw,d1 - and ~EPSW_IE,epsw - or EPSW_NMID,epsw - nop - - btst CHCTR_DCEN,d0 - beq debugger_local_cache_flushinv_no_dcache - - # wait for busy bit of area purge - setlb - mov (a0),d0 - btst DCPGCR_DCPGBSY,d0 - lne - - # set mask - clr d0 - mov d0,(DCPGMR) - - # area purge - # - # DCPGCR = DCPGCR_DCP - # - mov DCPGCR_DCP,d0 - mov d0,(a0) - - # wait for busy bit of area purge - setlb - mov (a0),d0 - btst DCPGCR_DCPGBSY,d0 - lne - -debugger_local_cache_flushinv_no_dcache: - # - # secondly, invalidate the icache if it is enabled - # - mov CHCTR,a0 - movhu (a0),d0 - btst CHCTR_ICEN,d0 - beq debugger_local_cache_flushinv_done - - invalidate_icache 0 - -debugger_local_cache_flushinv_done: - mov d1,epsw - -debugger_local_cache_flushinv_end: - ret [],0 - .size debugger_local_cache_flushinv,.-debugger_local_cache_flushinv - -############################################################################### -# -# 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: - movhu (CHCTR),d1 - btst CHCTR_DCEN|CHCTR_ICEN,d1 - beq debugger_local_cache_flushinv_one_end - btst CHCTR_DCEN,d1 - beq debugger_local_cache_flushinv_one_no_dcache - - # round cacheline addr down - and L1_CACHE_TAG_MASK,d0 - mov d0,a1 - mov d0,d1 - - # determine the dcache purge control reg address - mov DCACHE_PURGE(0,0),a0 - and L1_CACHE_TAG_ENTRY,d0 - add d0,a0 - - # retain valid entries in the cache - or L1_CACHE_TAG_VALID,d1 - - # conditionally purge this line in all ways - mov d1,(L1_CACHE_WAYDISP*0,a0) - -debugger_local_cache_flushinv_one_no_dcache: - # - # now try to flush the icache - # - mov CHCTR,a0 - movhu (a0),d0 - btst CHCTR_ICEN,d0 - beq debugger_local_cache_flushinv_one_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 - 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) - -debugger_local_cache_flushinv_one_end: - ret [],0 - .size debugger_local_cache_flushinv_one,.-debugger_local_cache_flushinv_one |
