diff options
Diffstat (limited to 'arch/mn10300/mm/cache-flush-by-reg.S')
| -rw-r--r-- | arch/mn10300/mm/cache-flush-by-reg.S | 308 |
1 files changed, 0 insertions, 308 deletions
diff --git a/arch/mn10300/mm/cache-flush-by-reg.S b/arch/mn10300/mm/cache-flush-by-reg.S deleted file mode 100644 index 1dcae0211671..000000000000 --- a/arch/mn10300/mm/cache-flush-by-reg.S +++ /dev/null @@ -1,308 +0,0 @@ -/* MN10300 CPU core caching routines, using indirect regs on cache controller - * - * Copyright (C) 2007 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> - - .am33_2 - -#ifndef CONFIG_SMP - .globl mn10300_dcache_flush - .globl mn10300_dcache_flush_page - .globl mn10300_dcache_flush_range - .globl mn10300_dcache_flush_range2 - .globl mn10300_dcache_flush_inv - .globl mn10300_dcache_flush_inv_page - .globl mn10300_dcache_flush_inv_range - .globl mn10300_dcache_flush_inv_range2 - -mn10300_dcache_flush = mn10300_local_dcache_flush -mn10300_dcache_flush_page = mn10300_local_dcache_flush_page -mn10300_dcache_flush_range = mn10300_local_dcache_flush_range -mn10300_dcache_flush_range2 = mn10300_local_dcache_flush_range2 -mn10300_dcache_flush_inv = mn10300_local_dcache_flush_inv -mn10300_dcache_flush_inv_page = mn10300_local_dcache_flush_inv_page -mn10300_dcache_flush_inv_range = mn10300_local_dcache_flush_inv_range -mn10300_dcache_flush_inv_range2 = mn10300_local_dcache_flush_inv_range2 - -#endif /* !CONFIG_SMP */ - -############################################################################### -# -# void mn10300_local_dcache_flush(void) -# Flush the entire data cache back to RAM -# -############################################################################### - ALIGN - .globl mn10300_local_dcache_flush - .type mn10300_local_dcache_flush,@function -mn10300_local_dcache_flush: - movhu (CHCTR),d0 - btst CHCTR_DCEN,d0 - beq mn10300_local_dcache_flush_end - - mov DCPGCR,a0 - - LOCAL_CLI_SAVE(d1) - - # 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 - - LOCAL_IRQ_RESTORE(d1) - -mn10300_local_dcache_flush_end: - ret [],0 - .size mn10300_local_dcache_flush,.-mn10300_local_dcache_flush - -############################################################################### -# -# void mn10300_local_dcache_flush_page(unsigned long start) -# void mn10300_local_dcache_flush_range(unsigned long start, unsigned long end) -# void mn10300_local_dcache_flush_range2(unsigned long start, unsigned long size) -# Flush a range of addresses on a page in the dcache -# -############################################################################### - ALIGN - .globl mn10300_local_dcache_flush_page - .globl mn10300_local_dcache_flush_range - .globl mn10300_local_dcache_flush_range2 - .type mn10300_local_dcache_flush_page,@function - .type mn10300_local_dcache_flush_range,@function - .type mn10300_local_dcache_flush_range2,@function -mn10300_local_dcache_flush_page: - and ~(PAGE_SIZE-1),d0 - mov PAGE_SIZE,d1 -mn10300_local_dcache_flush_range2: - add d0,d1 -mn10300_local_dcache_flush_range: - movm [d2,d3,a2],(sp) - - movhu (CHCTR),d2 - btst CHCTR_DCEN,d2 - beq mn10300_local_dcache_flush_range_end - - # calculate alignsize - # - # alignsize = L1_CACHE_BYTES; - # for (i = (end - start - 1) / L1_CACHE_BYTES ; i > 0; i >>= 1) - # alignsize <<= 1; - # d2 = alignsize; - # - mov L1_CACHE_BYTES,d2 - sub d0,d1,d3 - add -1,d3 - lsr L1_CACHE_SHIFT,d3 - beq 2f -1: - add d2,d2 - lsr 1,d3 - bne 1b -2: - mov d1,a1 # a1 = end - - LOCAL_CLI_SAVE(d3) - mov DCPGCR,a0 - - # wait for busy bit of area purge - setlb - mov (a0),d1 - btst DCPGCR_DCPGBSY,d1 - lne - - # determine the mask - mov d2,d1 - add -1,d1 - not d1 # d1 = mask = ~(alignsize-1) - mov d1,(DCPGMR) - - and d1,d0,a2 # a2 = mask & start - -dcpgloop: - # area purge - mov a2,d0 - or DCPGCR_DCP,d0 - mov d0,(a0) # DCPGCR = (mask & start) | DCPGCR_DCP - - # wait for busy bit of area purge - setlb - mov (a0),d1 - btst DCPGCR_DCPGBSY,d1 - lne - - # check purge of end address - add d2,a2 # a2 += alignsize - cmp a1,a2 # if (a2 < end) goto dcpgloop - bns dcpgloop - - LOCAL_IRQ_RESTORE(d3) - -mn10300_local_dcache_flush_range_end: - ret [d2,d3,a2],12 - - .size mn10300_local_dcache_flush_page,.-mn10300_local_dcache_flush_page - .size mn10300_local_dcache_flush_range,.-mn10300_local_dcache_flush_range - .size mn10300_local_dcache_flush_range2,.-mn10300_local_dcache_flush_range2 - -############################################################################### -# -# void mn10300_local_dcache_flush_inv(void) -# Flush the entire data cache and invalidate all entries -# -############################################################################### - ALIGN - .globl mn10300_local_dcache_flush_inv - .type mn10300_local_dcache_flush_inv,@function -mn10300_local_dcache_flush_inv: - movhu (CHCTR),d0 - btst CHCTR_DCEN,d0 - beq mn10300_local_dcache_flush_inv_end - - mov DCPGCR,a0 - - LOCAL_CLI_SAVE(d1) - - # wait for busy bit of area purge & invalidate - setlb - mov (a0),d0 - btst DCPGCR_DCPGBSY,d0 - lne - - # set the mask to cover everything - clr d0 - mov d0,(DCPGMR) - - # area purge & invalidate - mov DCPGCR_DCP|DCPGCR_DCI,d0 - mov d0,(a0) - - # wait for busy bit of area purge & invalidate - setlb - mov (a0),d0 - btst DCPGCR_DCPGBSY,d0 - lne - - LOCAL_IRQ_RESTORE(d1) - -mn10300_local_dcache_flush_inv_end: - ret [],0 - .size mn10300_local_dcache_flush_inv,.-mn10300_local_dcache_flush_inv - -############################################################################### -# -# void mn10300_local_dcache_flush_inv_page(unsigned long start) -# void mn10300_local_dcache_flush_inv_range(unsigned long start, unsigned long end) -# void mn10300_local_dcache_flush_inv_range2(unsigned long start, unsigned long size) -# Flush and invalidate a range of addresses on a page in the dcache -# -############################################################################### - ALIGN - .globl mn10300_local_dcache_flush_inv_page - .globl mn10300_local_dcache_flush_inv_range - .globl mn10300_local_dcache_flush_inv_range2 - .type mn10300_local_dcache_flush_inv_page,@function - .type mn10300_local_dcache_flush_inv_range,@function - .type mn10300_local_dcache_flush_inv_range2,@function -mn10300_local_dcache_flush_inv_page: - and ~(PAGE_SIZE-1),d0 - mov PAGE_SIZE,d1 -mn10300_local_dcache_flush_inv_range2: - add d0,d1 -mn10300_local_dcache_flush_inv_range: - movm [d2,d3,a2],(sp) - - movhu (CHCTR),d2 - btst CHCTR_DCEN,d2 - beq mn10300_local_dcache_flush_inv_range_end - - # calculate alignsize - # - # alignsize = L1_CACHE_BYTES; - # for (i = (end - start - 1) / L1_CACHE_BYTES; i > 0; i >>= 1) - # alignsize <<= 1; - # d2 = alignsize - # - mov L1_CACHE_BYTES,d2 - sub d0,d1,d3 - add -1,d3 - lsr L1_CACHE_SHIFT,d3 - beq 2f -1: - add d2,d2 - lsr 1,d3 - bne 1b -2: - mov d1,a1 # a1 = end - - LOCAL_CLI_SAVE(d3) - mov DCPGCR,a0 - - # wait for busy bit of area purge & invalidate - setlb - mov (a0),d1 - btst DCPGCR_DCPGBSY,d1 - lne - - # set the mask - mov d2,d1 - add -1,d1 - not d1 # d1 = mask = ~(alignsize-1) - mov d1,(DCPGMR) - - and d1,d0,a2 # a2 = mask & start - -dcpgivloop: - # area purge & invalidate - mov a2,d0 - or DCPGCR_DCP|DCPGCR_DCI,d0 - mov d0,(a0) # DCPGCR = (mask & start)|DCPGCR_DCP|DCPGCR_DCI - - # wait for busy bit of area purge & invalidate - setlb - mov (a0),d1 - btst DCPGCR_DCPGBSY,d1 - lne - - # check purge & invalidate of end address - add d2,a2 # a2 += alignsize - cmp a1,a2 # if (a2 < end) goto dcpgivloop - bns dcpgivloop - - LOCAL_IRQ_RESTORE(d3) - -mn10300_local_dcache_flush_inv_range_end: - ret [d2,d3,a2],12 - .size mn10300_local_dcache_flush_inv_page,.-mn10300_local_dcache_flush_inv_page - .size mn10300_local_dcache_flush_inv_range,.-mn10300_local_dcache_flush_inv_range - .size mn10300_local_dcache_flush_inv_range2,.-mn10300_local_dcache_flush_inv_range2 |