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#ifndef CYGONCE_VAR_CACHE_H
#define CYGONCE_VAR_CACHE_H
//=============================================================================
//
//      var_cache.h
//
//      Variant HAL cache control API
//
//=============================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
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// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
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//
// 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
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//####ECOSGPLCOPYRIGHTEND####
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):   nickg
// Contributors:nickg, jskov
// Date:        2000-04-02
// Purpose:     Variant cache control API
// Description: The macros defined here provide the HAL APIs for handling
//              cache control operations on the PPC60x variant CPUs.
// Usage:       Is included via the architecture cache header:
//              #include <cyg/hal/hal_cache.h>
//              ...
//
//####DESCRIPTIONEND####
//
//=============================================================================
 
#include <pkgconf/hal.h>
#include <cyg/infra/cyg_type.h>
 
#include <cyg/hal/ppc_regs.h>
 
#include <cyg/hal/plf_cache.h>
 
 
//-----------------------------------------------------------------------------
// Cache dimensions
 
// Data cache
#define HAL_DCACHE_SIZE                 8192    // Size of data cache in bytes
#define HAL_DCACHE_LINE_SIZE            16      // Size of a data cache line
#define HAL_DCACHE_WAYS                 2       // Associativity of the cache
 
// Instruction cache
#define HAL_ICACHE_SIZE                 16384   // Size of cache in bytes
#define HAL_ICACHE_LINE_SIZE            16      // Size of a cache line
#define HAL_ICACHE_WAYS                 2       // 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 - this is implicit whenever the MMU is turned on
#define HAL_DCACHE_ENABLE()
 
// Disable the data cache
#define HAL_DCACHE_DISABLE()
 
// Invalidate the entire cache
#define HAL_DCACHE_INVALIDATE_ALL()                             \
    CYG_MACRO_START                                             \
    int _i_, _ix_, _indx_;                                      \
    _indx_ = 0;                                                 \
    _ix_ = HAL_DCACHE_SIZE/2;                                   \
    for (_i_ = 0;  _i_ < HAL_DCACHE_SETS;  _i_++) {             \
/*        asm volatile ("dcbf 0,%0;" :: "r"(_indx_));           */  \
/*        asm volatile ("dcbf %1,%0;" :: "r"(_indx_), "r"(_ix_)); */\
        asm volatile ("dccci 0,%0;" :: "r"(_indx_));            \
        _indx_ += HAL_DCACHE_LINE_SIZE;                         \
    }                                                           \
    CYG_MACRO_END
 
// Synchronize the contents of the cache with memory.                                   
#define HAL_DCACHE_SYNC()                                                               \
    CYG_MACRO_START                                                                     \
    int _indx_;                                                                         \
    for (_indx_ = 0;  _indx_ < HAL_DCACHE_SIZE;  _indx_ += HAL_DCACHE_LINE_SIZE) {      \
        asm volatile ("dcbf 0,%0;" :: "r"(_indx_));                                     \
    }                                                                                   \
    CYG_MACRO_END
 
// Query the state of the data cache
#define HAL_DCACHE_IS_ENABLED(_state_)          \
    CYG_MACRO_START                             \
    (_state_) = 1;                              \
    CYG_MACRO_END
 
// 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()                     \
    CYG_MACRO_START                                     \
    int _i_, _indx_;                                    \
    _indx_ = 0;                                         \
    for (_i_ = 0;  _i_ < HAL_ICACHE_SETS;  _i_++) {     \
        asm volatile ("iccci 0,%0;" :: "r"(_indx_));    \
        _indx_ += HAL_ICACHE_LINE_SIZE;                 \
    }                                                   \
    CYG_MACRO_END
 
// Synchronize the contents of the cache with memory.
#define HAL_ICACHE_SYNC()  HAL_ICACHE_INVALIDATE_ALL()
 
// Query the state of the instruction cache
#define HAL_ICACHE_IS_ENABLED(_state_)          \
    CYG_MACRO_START                             \
    (_state_) = 1;                              \
    CYG_MACRO_END
 
// 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