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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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//

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// 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