diff options
Diffstat (limited to 'arch/mn10300/mm/cache-inv-by-reg.S')
-rw-r--r-- | arch/mn10300/mm/cache-inv-by-reg.S | 350 |
1 files changed, 0 insertions, 350 deletions
diff --git a/arch/mn10300/mm/cache-inv-by-reg.S b/arch/mn10300/mm/cache-inv-by-reg.S deleted file mode 100644 index a60825b91e77..000000000000 --- a/arch/mn10300/mm/cache-inv-by-reg.S +++ /dev/null @@ -1,350 +0,0 @@ -/* MN10300 CPU cache invalidation routines, using automatic purge registers - * - * 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> -#include <asm/cacheflush.h> -#include "cache.inc" - -#define mn10300_local_dcache_inv_range_intr_interval \ - +((1 << MN10300_DCACHE_INV_RANGE_INTR_LOG2_INTERVAL) - 1) - -#if mn10300_local_dcache_inv_range_intr_interval > 0xff -#error MN10300_DCACHE_INV_RANGE_INTR_LOG2_INTERVAL must be 8 or less -#endif - - .am33_2 - -#ifndef CONFIG_SMP - .globl mn10300_icache_inv - .globl mn10300_icache_inv_page - .globl mn10300_icache_inv_range - .globl mn10300_icache_inv_range2 - .globl mn10300_dcache_inv - .globl mn10300_dcache_inv_page - .globl mn10300_dcache_inv_range - .globl mn10300_dcache_inv_range2 - -mn10300_icache_inv = mn10300_local_icache_inv -mn10300_icache_inv_page = mn10300_local_icache_inv_page -mn10300_icache_inv_range = mn10300_local_icache_inv_range -mn10300_icache_inv_range2 = mn10300_local_icache_inv_range2 -mn10300_dcache_inv = mn10300_local_dcache_inv -mn10300_dcache_inv_page = mn10300_local_dcache_inv_page -mn10300_dcache_inv_range = mn10300_local_dcache_inv_range -mn10300_dcache_inv_range2 = mn10300_local_dcache_inv_range2 - -#endif /* !CONFIG_SMP */ - -############################################################################### -# -# void mn10300_local_icache_inv(void) -# Invalidate the entire icache -# -############################################################################### - ALIGN - .globl mn10300_local_icache_inv - .type mn10300_local_icache_inv,@function -mn10300_local_icache_inv: - mov CHCTR,a0 - - movhu (a0),d0 - btst CHCTR_ICEN,d0 - beq mn10300_local_icache_inv_end - - invalidate_icache 1 - -mn10300_local_icache_inv_end: - ret [],0 - .size mn10300_local_icache_inv,.-mn10300_local_icache_inv - -############################################################################### -# -# void mn10300_local_dcache_inv(void) -# Invalidate the entire dcache -# -############################################################################### - ALIGN - .globl mn10300_local_dcache_inv - .type mn10300_local_dcache_inv,@function -mn10300_local_dcache_inv: - mov CHCTR,a0 - - movhu (a0),d0 - btst CHCTR_DCEN,d0 - beq mn10300_local_dcache_inv_end - - invalidate_dcache 1 - -mn10300_local_dcache_inv_end: - ret [],0 - .size mn10300_local_dcache_inv,.-mn10300_local_dcache_inv - -############################################################################### -# -# void mn10300_local_dcache_inv_range(unsigned long start, unsigned long end) -# void mn10300_local_dcache_inv_range2(unsigned long start, unsigned long size) -# void mn10300_local_dcache_inv_page(unsigned long start) -# Invalidate a range of addresses on a page in the dcache -# -############################################################################### - ALIGN - .globl mn10300_local_dcache_inv_page - .globl mn10300_local_dcache_inv_range - .globl mn10300_local_dcache_inv_range2 - .type mn10300_local_dcache_inv_page,@function - .type mn10300_local_dcache_inv_range,@function - .type mn10300_local_dcache_inv_range2,@function -mn10300_local_dcache_inv_page: - and ~(PAGE_SIZE-1),d0 - mov PAGE_SIZE,d1 -mn10300_local_dcache_inv_range2: - add d0,d1 -mn10300_local_dcache_inv_range: - # If we are in writeback mode we check the start and end alignments, - # and if they're not cacheline-aligned, we must flush any bits outside - # the range that share cachelines with stuff inside the range -#ifdef CONFIG_MN10300_CACHE_WBACK - btst ~L1_CACHE_TAG_MASK,d0 - bne 1f - btst ~L1_CACHE_TAG_MASK,d1 - beq 2f -1: - bra mn10300_local_dcache_flush_inv_range -2: -#endif /* CONFIG_MN10300_CACHE_WBACK */ - - movm [d2,d3,a2],(sp) - - mov CHCTR,a0 - movhu (a0),d2 - btst CHCTR_DCEN,d2 - beq mn10300_local_dcache_inv_range_end - - # round the addresses out to be full cachelines, unless we're in - # writeback mode, in which case we would be in flush and invalidate by - # now -#ifndef CONFIG_MN10300_CACHE_WBACK - and L1_CACHE_TAG_MASK,d0 # round start addr down - - mov L1_CACHE_BYTES-1,d2 - add d2,d1 - and L1_CACHE_TAG_MASK,d1 # round end addr up -#endif /* !CONFIG_MN10300_CACHE_WBACK */ - - sub d0,d1,d2 # calculate the total size - mov d0,a2 # A2 = start address - mov d1,a1 # A1 = end address - - LOCAL_CLI_SAVE(d3) - - mov DCPGCR,a0 # make sure the purger isn't busy - setlb - mov (a0),d0 - btst DCPGCR_DCPGBSY,d0 - lne - - # skip initial address alignment calculation if address is zero - mov d2,d1 - cmp 0,a2 - beq 1f - -dcivloop: - /* calculate alignsize - * - * alignsize = L1_CACHE_BYTES; - * while (! start & alignsize) { - * alignsize <<=1; - * } - * d1 = alignsize; - */ - mov L1_CACHE_BYTES,d1 - lsr 1,d1 - setlb - add d1,d1 - mov d1,d0 - and a2,d0 - leq - -1: - /* calculate invsize - * - * if (totalsize > alignsize) { - * invsize = alignsize; - * } else { - * invsize = totalsize; - * tmp = 0x80000000; - * while (! invsize & tmp) { - * tmp >>= 1; - * } - * invsize = tmp; - * } - * d1 = invsize - */ - cmp d2,d1 - bns 2f - mov d2,d1 - - mov 0x80000000,d0 # start from 31bit=1 - setlb - lsr 1,d0 - mov d0,e0 - and d1,e0 - leq - mov d0,d1 - -2: - /* set mask - * - * mask = ~(invsize-1); - * DCPGMR = mask; - */ - mov d1,d0 - add -1,d0 - not d0 - mov d0,(DCPGMR) - - # invalidate area - mov a2,d0 - or DCPGCR_DCI,d0 - mov d0,(a0) # DCPGCR = (mask & start) | DCPGCR_DCI - - setlb # wait for the purge to complete - mov (a0),d0 - btst DCPGCR_DCPGBSY,d0 - lne - - sub d1,d2 # decrease size remaining - add d1,a2 # increase next start address - - /* check invalidating of end address - * - * a2 = a2 + invsize - * if (a2 < end) { - * goto dcivloop; - * } */ - cmp a1,a2 - bns dcivloop - - LOCAL_IRQ_RESTORE(d3) - -mn10300_local_dcache_inv_range_end: - ret [d2,d3,a2],12 - .size mn10300_local_dcache_inv_page,.-mn10300_local_dcache_inv_page - .size mn10300_local_dcache_inv_range,.-mn10300_local_dcache_inv_range - .size mn10300_local_dcache_inv_range2,.-mn10300_local_dcache_inv_range2 - -############################################################################### -# -# void mn10300_local_icache_inv_page(unsigned long start) -# void mn10300_local_icache_inv_range2(unsigned long start, unsigned long size) -# void mn10300_local_icache_inv_range(unsigned long start, unsigned long end) -# Invalidate a range of addresses on a page in the icache -# -############################################################################### - ALIGN - .globl mn10300_local_icache_inv_page - .globl mn10300_local_icache_inv_range - .globl mn10300_local_icache_inv_range2 - .type mn10300_local_icache_inv_page,@function - .type mn10300_local_icache_inv_range,@function - .type mn10300_local_icache_inv_range2,@function -mn10300_local_icache_inv_page: - and ~(PAGE_SIZE-1),d0 - mov PAGE_SIZE,d1 -mn10300_local_icache_inv_range2: - add d0,d1 -mn10300_local_icache_inv_range: - movm [d2,d3,a2],(sp) - - mov CHCTR,a0 - movhu (a0),d2 - btst CHCTR_ICEN,d2 - beq mn10300_local_icache_inv_range_reg_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: - - /* a1 = end */ - mov d1,a1 - - LOCAL_CLI_SAVE(d3) - - mov ICIVCR,a0 - /* wait for busy bit of area invalidation */ - setlb - mov (a0),d1 - btst ICIVCR_ICIVBSY,d1 - lne - - /* set mask - * - * mask = ~(alignsize-1); - * ICIVMR = mask; - */ - mov d2,d1 - add -1,d1 - not d1 - mov d1,(ICIVMR) - /* a2 = mask & start */ - and d1,d0,a2 - -icivloop: - /* area invalidate - * - * ICIVCR = (mask & start) | ICIVCR_ICI - */ - mov a2,d0 - or ICIVCR_ICI,d0 - mov d0,(a0) - - /* wait for busy bit of area invalidation */ - setlb - mov (a0),d1 - btst ICIVCR_ICIVBSY,d1 - lne - - /* check invalidating of end address - * - * a2 = a2 + alignsize - * if (a2 < end) { - * goto icivloop; - * } */ - add d2,a2 - cmp a1,a2 - bns icivloop - - LOCAL_IRQ_RESTORE(d3) - -mn10300_local_icache_inv_range_reg_end: - ret [d2,d3,a2],12 - .size mn10300_local_icache_inv_page,.-mn10300_local_icache_inv_page - .size mn10300_local_icache_inv_range,.-mn10300_local_icache_inv_range - .size mn10300_local_icache_inv_range2,.-mn10300_local_icache_inv_range2 |