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/*

 * Copyright (C) 2005 Jakub Jermar

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 *

 * - Redistributions of source code must retain the above copyright

 *   notice, this list of conditions and the following disclaimer.

 * - Redistributions in binary form must reproduce the above copyright

 *   notice, this list of conditions and the following disclaimer in the

 *   documentation and/or other materials provided with the distribution.

 * - The name of the author may not be used to endorse or promote products

 *   derived from this software without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR

 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES

 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.

 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,

 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT

 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF

 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef __ia64_PAGE_H__

#define __ia64_PAGE_H__

#include <arch/types.h>

#include <arch/mm/frame.h>

#define PAGE_SIZE   FRAME_SIZE

#define PAGE_WIDTH  FRAME_WIDTH

#define KA2PA(x)    ((__address) (x))

#define PA2KA(x)    ((__address) (x))

#define GET_PTL0_ADDRESS_ARCH()         ((pte_t *) 0)

#define SET_PTL0_ADDRESS_ARCH(ptl0)

/** Implementation of page hash table interface. */

#define HT_HASH_ARCH(page, asid)    0

#define HT_COMPARE_ARCH(page, asid, t)  0

#define HT_SLOT_EMPTY_ARCH(t)       1

#define HT_GET_NEXT_ARCH(t)     0

#define HT_SET_NEXT_ARCH(t, s)

#define HT_SET_RECORD_ARCH(t, page, asid, frame, flags)

#define REGION_RID_MAIN 0

#define REGION_RID_FIRST_INVALID 16

#define REGION_REGISTERS 8

#define VHPT_WIDTH 16         /*64kB*/

#define VHPT_SIZE (1<<VHPT_WIDTH)

#define VHPT_BASE 0           /* Must be aligned to VHPT_SIZE */

struct VHPT_tag_info

{

    unsigned long long tag       :63;

    unsigned           ti        : 1;

}__attribute__ ((packed));

union VHPT_tag

{

    struct VHPT_tag_info tag_info;

    unsigned             tag_word;

};

struct VHPT_entry_present

{

    /* Word 0 */

    unsigned p              : 1;

    unsigned rv0            : 1;

    unsigned ma             : 3;

    unsigned a              : 1;

    unsigned d              : 1;

    unsigned pl             : 2;

    unsigned ar             : 3;

    unsigned long long ppn  :38;

    unsigned rv1            : 2;

    unsigned ed             : 1;

    unsigned ig1            :11;

    /* Word 1 */

    unsigned rv2            : 2;

    unsigned ps             : 6;

    unsigned key            :24;

    unsigned rv3            :32;

    /* Word 2 */

    union VHPT_tag tag;       /*This data is here as union because I'm not sure if anybody nead access to areas ti and tag in VHPT entry*/

                            /* But I'm almost sure we nead access to whole word so there are both possibilities*/

    /* Word 3 */                                                   

    unsigned long long next :64; /* This ignored field will be (in my hopes ;-) ) used as pointer in link list of entries with same hash value*/

}__attribute__ ((packed));

struct VHPT_entry_not_present

{

    /* Word 0 */

    unsigned p              : 1;

    unsigned long long ig0  :52;

    unsigned ig1            :11;

    /* Word 1 */

    unsigned rv2            : 2;

    unsigned ps             : 6;

    unsigned long long ig2  :56;

    /* Word 2 */

    union VHPT_tag tag;       /*This data is here as union because I'm not sure if anybody nead access to areas ti and tag in VHPT entry*/

                            /* But I'm almost sure we nead access to whole word so there are both possibilities*/

    /* Word 3 */                                                   

    unsigned long long next :64; /* This ignored field will be (in my hopes ;-) ) used as pointer in link list of entries with same hash value*/

}__attribute__ ((packed));

typedef union VHPT_entry

{

    struct VHPT_entry_present        present;

    struct VHPT_entry_not_present    not_present;

}VHPT_entry;

extern void page_arch_init(void);

struct region_register_map

{

  unsigned ve            : 1;

    unsigned r0            : 1;

    unsigned ps            : 6;

    unsigned rid           :24;

    unsigned r1            :32;

}__attribute__ ((packed));

typedef union region_register

{

    struct region_register_map   map;

    unsigned long long           word;

}region_register;

struct PTA_register_map

{

  unsigned ve            : 1;

    unsigned r0            : 1;

    unsigned size          : 6;

    unsigned vf            : 1;

    unsigned r1            : 6;

    unsigned long long base:49;

}__attribute__ ((packed));

typedef union PTA_register

{

    struct PTA_register_map   map;

    unsigned long long        word;

}PTA_register;

#endif