Subversion Repositories openrisc_2011-10-31

#ifndef CYGONCE_VAR_CACHE_H
#define CYGONCE_VAR_CACHE_H
//=============================================================================
//
//      var_cache.h
//
//      Variant HAL cache control API
//
//=============================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
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// for more details.
//
// You should have received a copy of the GNU General Public License along
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//
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// 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
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//####ECOSGPLCOPYRIGHTEND####
//=============================================================================
 
#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.h>
 
//      We currently just enable the  instruction cache on startup.  There  is
// no data cache.
 
//-----------------------------------------------------------------------------
// Cache dimensions - these vary between the 8xx sub-models
 
// 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                 1       // 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                 1       // 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
// Note: Any locked lines will not be invalidated.
#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_)
 
// 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()
 
// Query the state of the instruction cache
#define HAL_ICACHE_IS_ENABLED(_state_)
 
// 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_VAR_CACHE_H
// End of var_cache.h