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032c76bc CW |
1 | /* |
2 | * Altera Nios II MMU emulation for qemu. | |
3 | * | |
4 | * Copyright (C) 2012 Chris Wulff <crwulff@gmail.com> | |
5 | * | |
6 | * This library is free software; you can redistribute it and/or | |
7 | * modify it under the terms of the GNU Lesser General Public | |
8 | * License as published by the Free Software Foundation; either | |
9 | * version 2.1 of the License, or (at your option) any later version. | |
10 | * | |
11 | * This library is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | * Lesser General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU Lesser General Public | |
17 | * License along with this library; if not, see | |
18 | * <http://www.gnu.org/licenses/lgpl-2.1.html> | |
19 | */ | |
58ea30f5 MA |
20 | |
21 | #ifndef NIOS2_MMU_H | |
22 | #define NIOS2_MMU_H | |
032c76bc CW |
23 | |
24 | typedef struct Nios2TLBEntry { | |
25 | target_ulong tag; | |
26 | target_ulong data; | |
27 | } Nios2TLBEntry; | |
28 | ||
29 | typedef struct Nios2MMU { | |
30 | int tlb_entry_mask; | |
31 | uint32_t pteaddr_wr; | |
32 | uint32_t tlbacc_wr; | |
33 | uint32_t tlbmisc_wr; | |
34 | Nios2TLBEntry *tlb; | |
35 | } Nios2MMU; | |
36 | ||
37 | typedef struct Nios2MMULookup { | |
38 | target_ulong vaddr; | |
39 | target_ulong paddr; | |
40 | int prot; | |
41 | } Nios2MMULookup; | |
42 | ||
43 | void mmu_flip_um(CPUNios2State *env, unsigned int um); | |
44 | unsigned int mmu_translate(CPUNios2State *env, | |
45 | Nios2MMULookup *lu, | |
46 | target_ulong vaddr, int rw, int mmu_idx); | |
47 | void mmu_read_debug(CPUNios2State *env, uint32_t rn); | |
48 | void mmu_write(CPUNios2State *env, uint32_t rn, uint32_t v); | |
49 | void mmu_init(CPUNios2State *env); | |
50 | ||
58ea30f5 | 51 | #endif /* NIOS2_MMU_H */ |