Subversion Repositories openrisc

#ifndef CYGONCE_HAL_CACHE_H

#define CYGONCE_HAL_CACHE_H

//=============================================================================

//

//      hal_cache.h

//

//      HAL cache control API

//

//=============================================================================

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

// -------------------------------------------                              

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under    

// the terms of the GNU General Public License as published by the Free     

// Software Foundation; either version 2 or (at your option) any later      

// version.                                                                 

//

// eCos is distributed in the hope that it will be useful, but WITHOUT      

// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    

// for more details.                                                        

//

// You should have received a copy of the GNU General Public License        

// along with eCos; if not, write to the Free Software Foundation, Inc.,    

// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            

//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

// this file does not by itself cause the resulting work to be covered by   

// the GNU General Public License. However the source code for this file    

// must still be made available in accordance with section (3) of the GNU   

// General Public License v2.                                               

//

// This exception does not invalidate any other reasons why a work based    

// on this file might be covered by the GNU General Public License.         

// -------------------------------------------                              

// ####ECOSGPLCOPYRIGHTEND####                                              

//=============================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    David A Rusling

// Contributors: Philippe Robin

// Date:         November 7, 2000

// Purpose:      Cache control API

// Description:  The macros defined here provide the HAL APIs for handling

//               cache control operations.

// Usage:

//               #include <cyg/hal/hal_cache.h>

//               ...

//              

//

//####DESCRIPTIONEND####

//

//=============================================================================

#include <cyg/infra/cyg_type.h>

//-----------------------------------------------------------------------------

// Cache dimensions

// Data cache

#define HAL_DCACHE_SIZE                 0    // Size of data cache in bytes

#define HAL_DCACHE_LINE_SIZE            0    // Size of a data cache line

#define HAL_DCACHE_WAYS                 0    // Associativity of the cache

// Instruction cache

#define HAL_ICACHE_SIZE                 0    // Size of cache in bytes

#define HAL_ICACHE_LINE_SIZE            0    // Size of a cache line

#define HAL_ICACHE_WAYS                 0    // Associativity of the cache

#define HAL_DCACHE_SETS (HAL_DCACHE_SIZE/(HAL_DCACHE_LINE_SIZE*HAL_DCACHE_WAYS))

#define HAL_ICACHE_SETS (HAL_ICACHE_SIZE/(HAL_ICACHE_LINE_SIZE*HAL_ICACHE_WAYS))

//-----------------------------------------------------------------------------

// Global control of data cache

// Enable the data cache

#define HAL_DCACHE_ENABLE()

// Disable the data cache

#define HAL_DCACHE_DISABLE()

// Invalidate the entire cache

#define HAL_DCACHE_INVALIDATE_ALL()

// Synchronize the contents of the cache with memory.

#define HAL_DCACHE_SYNC()

// Query the state of the data cache

#define HAL_DCACHE_IS_ENABLED(_state_)  0

// Purge contents of data cache

#define HAL_DCACHE_PURGE_ALL()

// Set the data cache refill burst size

//#define HAL_DCACHE_BURST_SIZE(_size_)

// Set the data cache write mode

//#define HAL_DCACHE_WRITE_MODE( _mode_ )

//#define HAL_DCACHE_WRITETHRU_MODE       0

//#define HAL_DCACHE_WRITEBACK_MODE       1

// Load the contents of the given address range into the data cache

// and then lock the cache so that it stays there.

//#define HAL_DCACHE_LOCK(_base_, _size_)

// Undo a previous lock operation

//#define HAL_DCACHE_UNLOCK(_base_, _size_)

// Unlock entire cache

//#define HAL_DCACHE_UNLOCK_ALL()

//-----------------------------------------------------------------------------

// Data cache line control

// Allocate cache lines for the given address range without reading its

// contents from memory.

//#define HAL_DCACHE_ALLOCATE( _base_ , _size_ )

// Write dirty cache lines to memory and invalidate the cache entries

// for the given address range.

//#define HAL_DCACHE_FLUSH( _base_ , _size_ )

// Invalidate cache lines in the given range without writing to memory.

//#define HAL_DCACHE_INVALIDATE( _base_ , _size_ )

// Write dirty cache lines to memory for the given address range.

//#define HAL_DCACHE_STORE( _base_ , _size_ )

// Preread the given range into the cache with the intention of reading

// from it later.

//#define HAL_DCACHE_READ_HINT( _base_ , _size_ )

// Preread the given range into the cache with the intention of writing

// to it later.

//#define HAL_DCACHE_WRITE_HINT( _base_ , _size_ )

// Allocate and zero the cache lines associated with the given range.

//#define HAL_DCACHE_ZERO( _base_ , _size_ )

//-----------------------------------------------------------------------------

// Global control of Instruction cache

// Enable the instruction cache

#define HAL_ICACHE_ENABLE()

// Disable the instruction cache

#define HAL_ICACHE_DISABLE()

// Invalidate the entire cache

#define HAL_ICACHE_INVALIDATE_ALL()

// Synchronize the contents of the cache with memory.

#define HAL_ICACHE_SYNC()

// Set the instruction cache refill burst size

//#define HAL_ICACHE_BURST_SIZE(_size_)

// Load the contents of the given address range into the instruction cache

// and then lock the cache so that it stays there.

//#define HAL_ICACHE_LOCK(_base_, _size_)

// Undo a previous lock operation

//#define HAL_ICACHE_UNLOCK(_base_, _size_)

// Unlock entire cache

//#define HAL_ICACHE_UNLOCK_ALL()

//-----------------------------------------------------------------------------

// Instruction cache line control

// Invalidate cache lines in the given range without writing to memory.

//#define HAL_ICACHE_INVALIDATE( _base_ , _size_ )

//-----------------------------------------------------------------------------

#endif // ifndef CYGONCE_HAL_CACHE_H

// End of hal_cache.h