diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 18:53:26 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-10-27 18:53:26 -0700 |
commit | bdab225015fbbb45ccd8913f5d7c01b2bf67d8b2 (patch) | |
tree | 5ef62301face958977a084bf2b6c5300296a25f2 /arch/mn10300/mm/cache-flush-mn10300.S | |
parent | 7c5814c7199851c5fe9395d08fc1ab3c8c1531ea (diff) | |
parent | 7c7fcf762e405eb040ee10d22d656a791f616122 (diff) |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300
* git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-mn10300: (44 commits)
MN10300: Save frame pointer in thread_info struct rather than global var
MN10300: Change "Matsushita" to "Panasonic".
MN10300: Create a defconfig for the ASB2364 board
MN10300: Update the ASB2303 defconfig
MN10300: ASB2364: Add support for SMSC911X and SMC911X
MN10300: ASB2364: Handle the IRQ multiplexer in the FPGA
MN10300: Generic time support
MN10300: Specify an ELF HWCAP flag for MN10300 Atomic Operations Unit support
MN10300: Map userspace atomic op regs as a vmalloc page
MN10300: And Panasonic AM34 subarch and implement SMP
MN10300: Delete idle_timestamp from irq_cpustat_t
MN10300: Make various interrupt priority settings configurable
MN10300: Optimise do_csum()
MN10300: Implement atomic ops using atomic ops unit
MN10300: Make the FPU operate in non-lazy mode under SMP
MN10300: SMP TLB flushing
MN10300: Use the [ID]PTEL2 registers rather than [ID]PTEL for TLB control
MN10300: Make the use of PIDR to mark TLB entries controllable
MN10300: Rename __flush_tlb*() to local_flush_tlb*()
MN10300: AM34 erratum requires MMUCTR read and write on exception entry
...
Diffstat (limited to 'arch/mn10300/mm/cache-flush-mn10300.S')
-rw-r--r-- | arch/mn10300/mm/cache-flush-mn10300.S | 192 |
1 files changed, 0 insertions, 192 deletions
diff --git a/arch/mn10300/mm/cache-flush-mn10300.S b/arch/mn10300/mm/cache-flush-mn10300.S deleted file mode 100644 index c8ed1cbac107..000000000000 --- a/arch/mn10300/mm/cache-flush-mn10300.S +++ /dev/null @@ -1,192 +0,0 @@ -/* MN10300 CPU core caching routines - * - * 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> - - .am33_2 - .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 - -############################################################################### -# -# void mn10300_dcache_flush(void) -# Flush the entire data cache back to RAM -# -############################################################################### - ALIGN -mn10300_dcache_flush: - movhu (CHCTR),d0 - btst CHCTR_DCEN,d0 - beq mn10300_dcache_flush_end - - # read the addresses tagged in the cache's tag RAM and attempt to flush - # those addresses specifically - # - we rely on the hardware to filter out invalid tag entry addresses - mov DCACHE_TAG(0,0),a0 # dcache tag RAM access address - mov DCACHE_PURGE(0,0),a1 # dcache purge request address - mov L1_CACHE_NWAYS*L1_CACHE_NENTRIES,d1 # total number of entries - -mn10300_dcache_flush_loop: - mov (a0),d0 - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 - or L1_CACHE_TAG_VALID,d0 # retain valid entries in the - # cache - mov d0,(a1) # conditional purge - -mn10300_dcache_flush_skip: - add L1_CACHE_BYTES,a0 - add L1_CACHE_BYTES,a1 - add -1,d1 - bne mn10300_dcache_flush_loop - -mn10300_dcache_flush_end: - ret [],0 - -############################################################################### -# -# void mn10300_dcache_flush_page(unsigned start) -# void mn10300_dcache_flush_range(unsigned start, unsigned end) -# void mn10300_dcache_flush_range2(unsigned start, unsigned size) -# Flush a range of addresses on a page in the dcache -# -############################################################################### - ALIGN -mn10300_dcache_flush_page: - mov PAGE_SIZE,d1 -mn10300_dcache_flush_range2: - add d0,d1 -mn10300_dcache_flush_range: - movm [d2,d3],(sp) - - movhu (CHCTR),d2 - btst CHCTR_DCEN,d2 - beq mn10300_dcache_flush_range_end - - # round start addr down - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 - mov d0,a1 - - add L1_CACHE_BYTES,d1 # round end addr up - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d1 - - # write a request to flush all instances of an address from the cache - mov DCACHE_PURGE(0,0),a0 - mov a1,d0 - and L1_CACHE_TAG_ENTRY,d0 - add d0,a0 # starting dcache purge control - # reg address - - sub a1,d1 - lsr L1_CACHE_SHIFT,d1 # total number of entries to - # examine - - or L1_CACHE_TAG_VALID,a1 # retain valid entries in the - # cache - -mn10300_dcache_flush_range_loop: - mov a1,(L1_CACHE_WAYDISP*0,a0) # conditionally purge this line - # all ways - - add L1_CACHE_BYTES,a0 - add L1_CACHE_BYTES,a1 - and ~L1_CACHE_WAYDISP,a0 # make sure way stay on way 0 - add -1,d1 - bne mn10300_dcache_flush_range_loop - -mn10300_dcache_flush_range_end: - ret [d2,d3],8 - -############################################################################### -# -# void mn10300_dcache_flush_inv(void) -# Flush the entire data cache and invalidate all entries -# -############################################################################### - ALIGN -mn10300_dcache_flush_inv: - movhu (CHCTR),d0 - btst CHCTR_DCEN,d0 - beq mn10300_dcache_flush_inv_end - - # hit each line in the dcache with an unconditional purge - mov DCACHE_PURGE(0,0),a1 # dcache purge request address - mov L1_CACHE_NWAYS*L1_CACHE_NENTRIES,d1 # total number of entries - -mn10300_dcache_flush_inv_loop: - mov (a1),d0 # unconditional purge - - add L1_CACHE_BYTES,a1 - add -1,d1 - bne mn10300_dcache_flush_inv_loop - -mn10300_dcache_flush_inv_end: - ret [],0 - -############################################################################### -# -# void mn10300_dcache_flush_inv_page(unsigned start) -# void mn10300_dcache_flush_inv_range(unsigned start, unsigned end) -# void mn10300_dcache_flush_inv_range2(unsigned start, unsigned size) -# Flush and invalidate a range of addresses on a page in the dcache -# -############################################################################### - ALIGN -mn10300_dcache_flush_inv_page: - mov PAGE_SIZE,d1 -mn10300_dcache_flush_inv_range2: - add d0,d1 -mn10300_dcache_flush_inv_range: - movm [d2,d3],(sp) - movhu (CHCTR),d2 - btst CHCTR_DCEN,d2 - beq mn10300_dcache_flush_inv_range_end - - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d0 # round start - # addr down - mov d0,a1 - - add L1_CACHE_BYTES,d1 # round end addr up - and L1_CACHE_TAG_ADDRESS|L1_CACHE_TAG_ENTRY,d1 - - # write a request to flush and invalidate all instances of an address - # from the cache - mov DCACHE_PURGE(0,0),a0 - mov a1,d0 - and L1_CACHE_TAG_ENTRY,d0 - add d0,a0 # starting dcache purge control - # reg address - - sub a1,d1 - lsr L1_CACHE_SHIFT,d1 # total number of entries to - # examine - -mn10300_dcache_flush_inv_range_loop: - mov a1,(L1_CACHE_WAYDISP*0,a0) # conditionally purge this line - # in all ways - - add L1_CACHE_BYTES,a0 - add L1_CACHE_BYTES,a1 - and ~L1_CACHE_WAYDISP,a0 # make sure way stay on way 0 - add -1,d1 - bne mn10300_dcache_flush_inv_range_loop - -mn10300_dcache_flush_inv_range_end: - ret [d2,d3],8 |