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#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 Red Hat, 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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//

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// 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.,

// 59 Temple Place, Suite 330, Boston, MA 02111-1307 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.

//

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

//

// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.

// at http://sources.redhat.com/ecos/ecos-license/

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

//####ECOSGPLCOPYRIGHTEND####

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

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

//

// Author(s):   nickg, gthomas

// Contributors:        nickg, gthomas

// Date:        1998-09-28

// 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>

#include <cyg/hal/hal_io.h>

#include <cyg/hal/plf_io.h>

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

// Cache dimensions - one unified cache

#define HAL_CACHE_UNIFIED

#define HAL_UCACHE_SIZE                 0x2000   // Size of cache in bytes

#define HAL_UCACHE_LINE_SIZE            16       // Size of a cache line

#define HAL_UCACHE_WAYS                 2        // Associativity of the cache

#define HAL_UCACHE_SETS (HAL_UCACHE_SIZE/(HAL_UCACHE_LINE_SIZE*HAL_UCACHE_WAYS))

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

// Global control of cache

// Enable the cache

#define HAL_UCACHE_ENABLE()                     \

    CYG_MACRO_START                             \

    cyg_uint32 syscfg;                          \

    HAL_READ_UINT32(E7T_SYSCFG, syscfg);        \

    syscfg |= E7T_SYSCFG_CE;                    \

    HAL_WRITE_UINT32(E7T_SYSCFG, syscfg);       \

    CYG_MACRO_END

// Disable the cache

#define HAL_UCACHE_DISABLE()                    \

    CYG_MACRO_START                             \

    cyg_uint32 syscfg;                          \

    HAL_READ_UINT32(E7T_SYSCFG, syscfg);        \

    syscfg &= ~E7T_SYSCFG_CE;                   \

    HAL_WRITE_UINT32(E7T_SYSCFG, syscfg);       \

    CYG_MACRO_END

// Invalidate the entire cache

#define HAL_UCACHE_INVALIDATE_ALL()                             \

    CYG_MACRO_START                                             \

    register cyg_uint32* tag = (cyg_uint32*)E7T_CACHE_TAG_ADDR; \

    register int i;                                             \

    for (i = 0; i < HAL_UCACHE_SETS/4; i++) {                   \

        *tag++ = 0;                                             \

        *tag++ = 0;                                             \

        *tag++ = 0;                                             \

        *tag++ = 0;                                             \

    }                                                           \

    CYG_MACRO_END

// Synchronize the contents of the cache with memory.

// No action necessary. Cache is write-through.

#define HAL_UCACHE_SYNC()

// Query the state of the cache

#define HAL_UCACHE_IS_ENABLED(_state_)                  \

    CYG_MACRO_START                                     \

    cyg_uint32 syscfg;                                  \

    HAL_READ_UINT32(E7T_SYSCFG, syscfg);                \

    (_state_) = (syscfg & E7T_SYSCFG_CE) ? 1 : 0;       \

    CYG_MACRO_END

// Purge contents of cache

#define HAL_UCACHE_PURGE_ALL()  HAL_UCACHE_INVALIDATE_ALL()

// Set the cache refill burst size

//#define HAL_UCACHE_BURST_SIZE(_size_)

// Set the cache write mode

//#define HAL_UCACHE_WRITE_MODE( _mode_ )

//#define HAL_UCACHE_WRITETHRU_MODE       0

//#define HAL_UCACHE_WRITEBACK_MODE       1

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

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

//#define HAL_UCACHE_LOCK(_base_, _size_)

// Undo a previous lock operation

//#define HAL_UCACHE_UNLOCK(_base_, _size_)

// Unlock entire cache

//#define HAL_UCACHE_UNLOCK_ALL()

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

// Cache line control

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

// contents from memory.

//#define HAL_UCACHE_ALLOCATE( _base_ , _size_ )

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

// for the given address range.

//#define HAL_UCACHE_FLUSH( _base_ , _size_ )

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

//#define HAL_UCACHE_INVALIDATE( _base_ , _size_ )

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

//#define HAL_UCACHE_STORE( _base_ , _size_ )

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

// from it later.

//#define HAL_UCACHE_READ_HINT( _base_ , _size_ )

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

// to it later.

//#define HAL_UCACHE_WRITE_HINT( _base_ , _size_ )

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

//#define HAL_UCACHE_ZERO( _base_ , _size_ )

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

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

// Data and instruction cache macros map onto the both-cache macros

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

// Global control of data cache

#define HAL_DCACHE_SIZE                 HAL_UCACHE_SIZE

#define HAL_DCACHE_LINE_SIZE            HAL_UCACHE_LINE_SIZE

#define HAL_DCACHE_WAYS                 HAL_UCACHE_WAYS

#define HAL_DCACHE_SETS                 HAL_UCACHE_SETS

// Enable the data cache

#define HAL_DCACHE_ENABLE()             HAL_UCACHE_ENABLE()

// Disable the data cache

#define HAL_DCACHE_DISABLE()            HAL_UCACHE_DISABLE()

// Invalidate the entire cache

#define HAL_DCACHE_INVALIDATE_ALL()     HAL_UCACHE_INVALIDATE_ALL()

// Synchronize the contents of the cache with memory.

#define HAL_DCACHE_SYNC()               HAL_UCACHE_SYNC()

// Query the state of the data cache

#define HAL_DCACHE_IS_ENABLED(_state_)  HAL_UCACHE_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

#define HAL_ICACHE_SIZE                 HAL_UCACHE_SIZE

#define HAL_ICACHE_LINE_SIZE            HAL_UCACHE_LINE_SIZE

#define HAL_ICACHE_WAYS                 HAL_UCACHE_WAYS

#define HAL_ICACHE_SETS                 HAL_UCACHE_SETS

// Enable the instruction cache

#define HAL_ICACHE_ENABLE()             HAL_UCACHE_ENABLE()

// Disable the instruction cache

#define HAL_ICACHE_DISABLE()            HAL_UCACHE_DISABLE()

// Invalidate the entire cache

#define HAL_ICACHE_INVALIDATE_ALL()     HAL_UCACHE_INVALIDATE_ALL()

// Synchronize the contents of the cache with memory.

#define HAL_ICACHE_SYNC()               HAL_UCACHE_SYNC()

// Query the state of the instruction cache

#define HAL_ICACHE_IS_ENABLED(_state_)  HAL_UCACHE_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_HAL_CACHE_H

// End of hal_cache.h