#ifndef CYGONCE_PLF_IO_H
#define CYGONCE_PLF_IO_H

//=============================================================================
//
//      plf_io.h
//
//      Platform specific IO support
//
//=============================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
// Copyright (C) 2002 Gary Thomas
//
// 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
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// 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.
//
// This exception does not invalidate any other reasons why a work based on
// 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):    hmt, jskov 
// Contributors: hmt, jskov, gthomas
// Date:         2002-07-23
// Purpose:      Cogent CSB281 (PowerPC 8245) PCI IO support macros
// Description: 
// Usage:        #include <cyg/hal/plf_io.h>
//
//####DESCRIPTIONEND####
//
//=============================================================================

#include CYGBLD_HAL_PLATFORM_H
//#include CYGBLD_HAL_PLF_DEFS_H

#include <cyg/hal/hal_io.h>             // IO macros
#include <cyg/hal/plf_intr.h>           // Interrupt vectors

//-----------------------------------------------------------------------------
//
// PCI support
//
#define CYGARC_PHYSICAL_ADDRESS(x) (x)
#define CYGARC_UNCACHED_ADDRESS(x) (x)

// Restrict device [slot] space
#define CYG_PCI_MAX_BUS                       1  // Only one BUS
#define CYG_PCI_MIN_DEV                      11  // Slots start at 11
#define CYG_PCI_MAX_DEV                      14  // ... and end at 13

//-----------------------------------------------------------------------------
// Resources

// Map PCI device resources starting from these addresses in PCI space.
#define HAL_PCI_ALLOC_BASE_MEMORY                 0xF8000000
#define HAL_PCI_ALLOC_BASE_IO                     0xFE800000

// This is where the PCI spaces are mapped in the CPU's address space.
#define HAL_PCI_PHYSICAL_MEMORY_BASE              0  // Address maps are 1-1
#define HAL_PCI_PHYSICAL_IO_BASE                  0

// [hard-wired] shared memory segment
#define CYGMEM_SECTION_pci_window                 CYGMEM_REGION_ram_SIZE  // "end" of RAM
#define CYGMEM_SECTION_pci_window_SIZE            0x00100000

// Initialize the PCI environment
externC void _csb281_pci_init(void);
#define HAL_PCI_INIT() \
  _csb281_pci_init()

// Translate the PCI interrupt requested by the device (INTA#, INTB#,
// INTC# or INTD#) to the associated CPU interrupt (i.e., HAL vector).
externC void _csb281_pci_translate_interrupt(int bus, int devfn, int *vec, int *valid);
#define HAL_PCI_TRANSLATE_INTERRUPT( __bus, __devfn, __vec, __valid) \
  _csb281_pci_translate_interrupt(__bus, __devfn, &__vec, &__valid)

// Read a value from the PCI configuration space of the appropriate
// size at an address composed from the bus, devfn and offset.
externC cyg_uint8 _csb281_pci_cfg_read_uint8(int bus, int dev, int offset);
#define HAL_PCI_CFG_READ_UINT8( __bus, __devfn, __offset, __val )  \
  __val = _csb281_pci_cfg_read_uint8(__bus, __devfn, __offset)
    
externC cyg_uint16 _csb281_pci_cfg_read_uint16(int bus, int dev, int offset);
#define HAL_PCI_CFG_READ_UINT16( __bus, __devfn, __offset, __val )  \
  __val = _csb281_pci_cfg_read_uint16(__bus, __devfn, __offset)
    
externC cyg_uint32 _csb281_pci_cfg_read_uint32(int bus, int dev, int offset);
#define HAL_PCI_CFG_READ_UINT32( __bus, __devfn, __offset, __val )  \
  __val = _csb281_pci_cfg_read_uint32(__bus, __devfn, __offset)

// Write a value to the PCI configuration space of the appropriate
// size at an address composed from the bus, devfn and offset.
externC void _csb281_pci_cfg_write_uint8(int bus, int dev, int offset, cyg_uint8 val);
#define HAL_PCI_CFG_WRITE_UINT8( __bus, __devfn, __offset, __val ) \
  _csb281_pci_cfg_write_uint8(__bus, __devfn, __offset, __val)

externC void _csb281_pci_cfg_write_uint16(int bus, int dev, int offset, cyg_uint16 val);
#define HAL_PCI_CFG_WRITE_UINT16( __bus, __devfn, __offset, __val ) \
  _csb281_pci_cfg_write_uint16(__bus, __devfn, __offset, __val)

externC void _csb281_pci_cfg_write_uint32(int bus, int dev, int offset, cyg_uint32 val);
#define HAL_PCI_CFG_WRITE_UINT32( __bus, __devfn, __offset, __val ) \
  _csb281_pci_cfg_write_uint32(__bus, __devfn, __offset, __val)

static __inline__ unsigned long
_le32(unsigned long val)
{
    return (((val & 0x000000FF) << 24) |
            ((val & 0x0000FF00) <<  8) |
            ((val & 0x00FF0000) >>  8) |
            ((val & 0xFF000000) >> 24));
}

static __inline__ unsigned short
_le16(unsigned short val)
{
    return (((val & 0x000000FF) << 8) |
            ((val & 0x0000FF00) >> 8));
}

#define HAL_WRITE_UINT32LE(_addr_, _val_) \
  HAL_WRITE_UINT32(_addr_, _le32(_val_))
#define HAL_WRITE_UINT16LE(_addr_, _val_) \
  HAL_WRITE_UINT16(_addr_, _le16(_val_))
#define HAL_WRITE_UINT8LE(_addr_, _val_) \
  HAL_WRITE_UINT8(_addr_, _val_)
#define HAL_READ_UINT32LE(_addr_, _val_)        \
  {                                             \
      HAL_READ_UINT32(_addr_, _val_);           \
      _val_ = _le32(_val_);                     \
  }
#define HAL_READ_UINT16LE(_addr_, _val_)        \
  {                                             \
      HAL_READ_UINT16(_addr_, _val_);           \
      _val_ = _le16(_val_);                     \
  }
#define HAL_READ_UINT8LE(_addr_, _val_)        \
  HAL_READ_UINT8(_addr_, _val_)

//-----------------------------------------------------------------------------
// end of plf_io.h
#endif // CYGONCE_PLF_IO_H
