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#ifndef CYGONCE_HAL_CACHE_H
#define CYGONCE_HAL_CACHE_H
 
//=============================================================================
//
//      hal_cache.h
//
//      HAL Cache control support (such as it is in the simulator)
//
//=============================================================================
// ####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     
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// version.                                                                 
//
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// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    
// for more details.                                                        
//
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// 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   
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// 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):   nickg, gthomas, hmt
// Contributors:        nickg, gthomas, hmt
// Date:        1999-01-28
// Purpose:     Define Interrupt support
// Description: The macros defined here provide the HAL APIs for handling
//              the caches.
//              
// Usage:
//              #include <cyg/hal/hal_cache.h>
//              ...
//              
//
//####DESCRIPTIONEND####
//
//=============================================================================
 
#include <pkgconf/hal.h>
#include <pkgconf/hal_sparc.h>
 
#include <cyg/infra/cyg_type.h>
 
//-----------------------------------------------------------------------------
// SPARC cache macros
 
//-----------------------------------------------------------------------------
// Cache dimensions
 
// Data cache
#define HAL_DCACHE_SIZE                 0x800    // Size of data cache in bytes
#define HAL_DCACHE_LINE_SIZE            4        // Size of a data cache line
#define HAL_DCACHE_WAYS                 4        // Associativity of the cache
 
// Instruction cache
#define HAL_ICACHE_SIZE                 0x800    // Size of cache in bytes
#define HAL_ICACHE_LINE_SIZE            4        // Size of a cache line
#define HAL_ICACHE_WAYS                 4        // 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() 
 
// 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 - use Data cache controls since they
// are not separatable.
 
// Enable the instruction cache
#define HAL_ICACHE_ENABLE()      HAL_DCACHE_ENABLE()
 
// Disable the instruction cache
#define HAL_ICACHE_DISABLE()     HAL_DCACHE_DISABLE()
 
// Invalidate the entire cache
#define HAL_ICACHE_INVALIDATE_ALL()  HAL_DCACHE_SYNC();  HAL_DCACHE_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