508 lines
13 KiB
C
508 lines
13 KiB
C
/****************************************************************************
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* include/nuttx/cache.h
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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#ifndef __INCLUDE_NUTTX_CACHE_H
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#define __INCLUDE_NUTTX_CACHE_H
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#ifndef __ASSEMBLY__
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <sys/types.h>
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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#ifdef __cplusplus
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#define EXTERN extern "C"
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extern "C"
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{
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#else
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#define EXTERN extern
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/****************************************************************************
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* Name: up_get_icache_linesize
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*
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* Description:
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* Get icache linesize
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* Cache line size
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_ICACHE
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size_t up_get_icache_linesize(void);
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#else
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# define up_get_icache_linesize() 0
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#endif
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/****************************************************************************
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* Name: up_enable_icache
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*
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* Description:
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* Enable the I-Cache
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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* Caution:
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* The writable global variables aren't initialized yet.
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_ICACHE
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void up_enable_icache(void);
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#else
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# define up_enable_icache()
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#endif
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/****************************************************************************
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* Name: up_disable_icache
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*
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* Description:
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* Disable the I-Cache
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_ICACHE
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void up_disable_icache(void);
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#else
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# define up_disable_icache()
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#endif
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/****************************************************************************
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* Name: up_invalidate_icache
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*
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* Description:
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* Invalidate the instruction cache within the specified region.
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*
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* Input Parameters:
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* start - virtual start address of region
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* end - virtual end address of region + 1
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_ICACHE
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void up_invalidate_icache(uintptr_t start, uintptr_t end);
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#else
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# define up_invalidate_icache(start, end)
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#endif
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/****************************************************************************
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* Name: up_invalidate_icache_all
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*
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* Description:
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* Invalidate the entire contents of I cache.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_ICACHE
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void up_invalidate_icache_all(void);
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#else
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# define up_invalidate_icache_all()
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#endif
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/****************************************************************************
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* Name: up_lock_icache
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*
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* Description:
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* Prefetch and lock the instruction cache within the specified region.
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* If the specified address if not present in the instruction cache,
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* some architectures transfer the line from memory, others wait the
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* address be read from memory, and then lock.
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*
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* Input Parameters:
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* start - virtual start address of region
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* end - virtual end address of region + 1
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_ICACHE_LOCK
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void up_lock_icache(uintptr_t start, uintptr_t end);
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#else
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# define up_lock_icache()
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#endif
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/****************************************************************************
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* Name: up_unlock_icache
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*
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* Description:
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* Unlock the instruction cache within the specified region.
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*
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* Input Parameters:
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* start - virtual start address of region
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* end - virtual end address of region + 1
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_ICACHE_LOCK
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void up_unlock_icache(uintptr_t start, uintptr_t end);
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#else
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# define up_unlock_icache()
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#endif
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/****************************************************************************
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* Name: up_unlock_icache_all
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*
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* Description:
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* Unlock the entire contents of instruction cache.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_ICACHE_LOCK
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void up_unlock_icache_all(void);
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#else
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# define up_unlock_icache_all()
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#endif
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/****************************************************************************
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* Name: up_get_dcache_linesize
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*
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* Description:
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* Get dcache linesize
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* Cache line size
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE
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size_t up_get_dcache_linesize(void);
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#else
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# define up_get_dcache_linesize() 0
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#endif
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/****************************************************************************
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* Name: up_enable_dcache
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*
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* Description:
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* Enable the D-Cache
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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* Caution:
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* The writable global variables aren't initialized yet.
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE
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void up_enable_dcache(void);
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#else
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# define up_enable_dcache()
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#endif
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/****************************************************************************
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* Name: up_disable_dcache
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*
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* Description:
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* Disable the D-Cache
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE
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void up_disable_dcache(void);
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#else
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# define up_disable_dcache()
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#endif
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/****************************************************************************
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* Name: up_invalidate_dcache
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*
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* Description:
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* Invalidate the data cache within the specified region; we will be
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* performing a DMA operation in this region and we want to purge old data
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* in the cache.
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*
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* Input Parameters:
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* start - virtual start address of region
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* end - virtual end address of region + 1
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE
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void up_invalidate_dcache(uintptr_t start, uintptr_t end);
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#else
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# define up_invalidate_dcache(start, end)
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#endif
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/****************************************************************************
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* Name: up_invalidate_dcache_all
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*
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* Description:
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* Invalidate the entire contents of D cache.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE
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void up_invalidate_dcache_all(void);
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#else
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# define up_invalidate_dcache_all()
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#endif
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/****************************************************************************
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* Name: up_clean_dcache
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*
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* Description:
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* Clean the data cache within the specified region by flushing the
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* contents of the data cache to memory.
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*
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* Input Parameters:
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* start - virtual start address of region
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* end - virtual end address of region + 1
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE
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void up_clean_dcache(uintptr_t start, uintptr_t end);
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#else
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# define up_clean_dcache(start, end)
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#endif
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/****************************************************************************
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* Name: up_clean_dcache_all
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*
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* Description:
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* Clean the entire data cache within the specified region by flushing the
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* contents of the data cache to memory.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE
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void up_clean_dcache_all(void);
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#else
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# define up_clean_dcache_all()
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#endif
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/****************************************************************************
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* Name: up_flush_dcache
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*
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* Description:
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* Flush the data cache within the specified region by cleaning and
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* invalidating the D cache.
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*
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* Input Parameters:
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* start - virtual start address of region
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* end - virtual end address of region + 1
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE
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void up_flush_dcache(uintptr_t start, uintptr_t end);
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#else
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# define up_flush_dcache(start, end)
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#endif
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/****************************************************************************
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* Name: up_flush_dcache_all
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*
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* Description:
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* Flush the entire data cache by cleaning and invalidating the D cache.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE
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void up_flush_dcache_all(void);
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#else
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# define up_flush_dcache_all()
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#endif
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/****************************************************************************
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* Name: up_lock_dcache
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*
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* Description:
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* Prefetch and lock the data cache within the specified region.
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* If the specified address is not present in the data cache,
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* some architectures transfer the line from memory, others wait the
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* address be read from memory, and then lock.
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*
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* Input Parameters:
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* start - virtual start address of region
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* end - virtual end address of region + 1
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE_LOCK
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void up_lock_dcache(uintptr_t start, uintptr_t end);
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#else
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# define up_lock_dcache()
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#endif
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/****************************************************************************
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* Name: up_unlock_dcache
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*
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* Description:
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* Unlock the data cache within the specified region.
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*
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* Input Parameters:
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* start - virtual start address of region
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* end - virtual end address of region + 1
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE_LOCK
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void up_unlock_dcache(uintptr_t start, uintptr_t end);
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#else
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# define up_unlock_dcache()
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#endif
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/****************************************************************************
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* Name: up_unlock_dcache_all
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*
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* Description:
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* Unlock the entire contents of data cache.
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*
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* Input Parameters:
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* None
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_DCACHE_LOCK
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void up_unlock_dcache_all(void);
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#else
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# define up_unlock_dcache_all()
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#endif
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/****************************************************************************
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* Name: up_coherent_dcache
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*
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* Description:
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* Ensure that the I and D caches are coherent within specified region
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* by cleaning the D cache (i.e., flushing the D cache contents to memory
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* and invalidating the I cache. This is typically used when code has been
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* written to a memory region, and will be executed.
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*
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* Input Parameters:
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* addr - virtual start address of region
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* len - Size of the address region in bytes
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*
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* Returned Value:
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* None
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*
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****************************************************************************/
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#ifdef CONFIG_ARCH_ICACHE
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void up_coherent_dcache(uintptr_t addr, size_t len);
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#else
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# define up_coherent_dcache(addr, len)
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#endif
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#undef EXTERN
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#ifdef __cplusplus
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}
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#endif
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#endif /* __ASSEMBLY__ */
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#endif /* __INCLUDE_NUTTX_CACHE_H */
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