| 1 | /*
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| 2 | * Copyright (c) 2006 Martin Decky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup ppc32mm
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| 30 | * @{
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| 31 | */
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| 32 | /** @file
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| 33 | */
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| 34 |
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| 35 | #ifndef KERN_ppc32_TLB_H_
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| 36 | #define KERN_ppc32_TLB_H_
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| 37 |
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| 38 | #include <arch/interrupt.h>
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| 39 | #include <typedefs.h>
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| 40 |
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| 41 | #define WIMG_GUARDED 0x01
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| 42 | #define WIMG_COHERENT 0x02
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| 43 | #define WIMG_NO_CACHE 0x04
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| 44 | #define WIMG_WRITETHRU 0x08
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| 45 |
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| 46 | typedef struct {
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| 47 | unsigned v : 1; /**< Valid */
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| 48 | unsigned vsid : 24; /**< Virtual Segment ID */
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| 49 | unsigned h : 1; /**< Primary/secondary hash */
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| 50 | unsigned api : 6; /**< Abbreviated Page Index */
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| 51 | unsigned rpn : 20; /**< Real Page Number */
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| 52 | unsigned reserved0 : 3;
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| 53 | unsigned r : 1; /**< Reference */
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| 54 | unsigned c : 1; /**< Change */
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| 55 | unsigned wimg : 4; /**< Access control */
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| 56 | unsigned reserved1 : 1;
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| 57 | unsigned pp : 2; /**< Page protection */
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| 58 | } phte_t;
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| 59 |
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| 60 | typedef struct {
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| 61 | unsigned v : 1;
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| 62 | unsigned vsid : 24;
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| 63 | unsigned reserved0 : 1;
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| 64 | unsigned api : 6;
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| 65 | } ptehi_t;
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| 66 |
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| 67 | typedef struct {
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| 68 | unsigned rpn : 20;
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| 69 | unsigned xpn : 3;
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| 70 | unsigned reserved0 : 1;
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| 71 | unsigned c : 1;
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| 72 | unsigned wimg : 4;
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| 73 | unsigned x : 1;
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| 74 | unsigned pp : 2;
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| 75 | } ptelo_t;
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| 76 |
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| 77 | extern void pht_init(void);
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| 78 | extern void pht_refill(int n, istate_t *istate);
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| 79 | extern bool pht_refill_real(int n, istate_t *istate) __attribute__ ((section("K_UNMAPPED_TEXT_START")));
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| 80 | 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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| 81 |
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| 82 | #endif
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| 83 |
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| 84 | /** @}
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| 85 | */
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