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389 jermar 1
/*
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 * Copyright (c) 2006 Martin Decky
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup ppc32mm
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 * @{
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 */
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/** @file
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 */
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#ifndef KERN_ppc32_TLB_H_
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#define KERN_ppc32_TLB_H_
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#include <arch/interrupt.h>
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#include <arch/types.h>
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#include <typedefs.h>
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#define WIMG_GUARDED    0x01
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#define WIMG_COHERENT   0x02
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#define WIMG_NO_CACHE   0x04
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#define WIMG_WRITETHRU  0x08
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typedef struct {
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    unsigned v : 1;          /**< Valid */
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    unsigned vsid : 24;      /**< Virtual Segment ID */
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    unsigned h : 1;          /**< Primary/secondary hash */
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    unsigned api : 6;        /**< Abbreviated Page Index */
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    unsigned rpn : 20;       /**< Real Page Number */
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    unsigned reserved0 : 3;
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    unsigned r : 1;          /**< Reference */
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    unsigned c : 1;          /**< Change */
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    unsigned wimg : 4;       /**< Access control */
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    unsigned reserved1 : 1;
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    unsigned pp : 2;         /**< Page protection */
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} phte_t;
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typedef struct {
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    unsigned v : 1;
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    unsigned vsid : 24;
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    unsigned reserved0 : 1;
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    unsigned api : 6;
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} ptehi_t;
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typedef struct {
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    unsigned rpn : 20;
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    unsigned xpn : 3;
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    unsigned reserved0 : 1;
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    unsigned c : 1;
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    unsigned wimg : 4;
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    unsigned x : 1;
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    unsigned pp : 2;
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} ptelo_t;
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extern void pht_init(void);
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extern void pht_refill(int n, istate_t *istate);
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extern bool pht_refill_real(int n, istate_t *istate) __attribute__ ((section("K_UNMAPPED_TEXT_START")));
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extern void tlb_refill_real(int n, uint32_t tlbmiss, ptehi_t ptehi, ptelo_t ptelo, istate_t *istate) __attribute__ ((section("K_UNMAPPED_TEXT_START")));
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#endif
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/** @}
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 */