| [f761f1eb] | 1 | /*
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| 2 | * Copyright (C) 2001-2004 Jakub Jermar
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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 | #ifndef __mips_TLB_H__
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| 30 | #define __mips_TLB_H__
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| 31 |
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| [a1a03f9] | 32 | #define PAGE_UNCACHED 2
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| 33 | #define PAGE_CACHEABLE_EXC_WRITE 5
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| 34 |
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| [f761f1eb] | 35 | struct entry_lo {
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| [a1a03f9] | 36 | unsigned g : 1; /* global bit */
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| 37 | unsigned v : 1; /* valid bit */
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| 38 | unsigned d : 1; /* dirty/write-protect bit */
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| 39 | unsigned c : 3; /* cache coherency attribute */
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| 40 | unsigned pfn : 24; /* frame number */
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| [f761f1eb] | 41 | unsigned : 2;
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| 42 | } __attribute__ ((packed));
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| 43 |
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| 44 | struct entry_hi {
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| 45 | unsigned asid : 8;
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| 46 | unsigned : 4;
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| 47 | unsigned g : 1;
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| 48 | unsigned vpn2 : 19;
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| 49 | } __attribute__ ((packed));
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| 50 |
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| 51 | struct page_mask {
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| 52 | unsigned : 13;
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| 53 | unsigned mask : 12;
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| 54 | unsigned : 7;
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| 55 | } __attribute__ ((packed));
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| 56 |
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| 57 | struct tlb_entry {
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| 58 | struct entry_lo lo0;
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| 59 | struct entry_lo lo1;
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| 60 | struct entry_hi hi;
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| 61 | struct page_mask mask;
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| 62 | } __attribute__ ((packed));
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| 63 |
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| [a1a03f9] | 64 | typedef struct entry_lo pte_t;
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| 65 |
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| [f761f1eb] | 66 | extern void tlb_refill(void);
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| 67 | extern void tlb_invalid(void);
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| 68 |
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| 69 | #endif
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