1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (C) 2010 Nathan Whitehorn
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
20 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
22 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
23 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
25 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifndef _POWERPC_AIM_MMU_OEA64_H
29 #define _POWERPC_AIM_MMU_OEA64_H
30
31 #include "opt_pmap.h"
32
33 #include <vm/vm_extern.h>
34 #include <machine/mmuvar.h>
35
36 struct dump_context {
37 u_long ptex;
38 u_long ptex_end;
39 size_t blksz;
40 };
41
42 extern const struct mmu_kobj oea64_mmu;
43
44 /*
45 * Helper routines
46 */
47
48 /* Allocate physical memory for use in moea64_bootstrap. */
49 vm_offset_t moea64_bootstrap_alloc(vm_size_t size, vm_size_t align);
50 /* Set an LPTE structure to match the contents of a PVO */
51 void moea64_pte_from_pvo(const struct pvo_entry *pvo, struct lpte *lpte);
52
53 /*
54 * Flags
55 */
56
57 #define MOEA64_PTE_PROT_UPDATE 1
58 #define MOEA64_PTE_INVALIDATE 2
59
60 /*
61 * Bootstrap subroutines
62 *
63 * An MMU_BOOTSTRAP() implementation looks like this:
64 * moea64_early_bootstrap();
65 * Allocate Page Table
66 * moea64_mid_bootstrap();
67 * Add mappings for MMU resources
68 * moea64_late_bootstrap();
69 */
70
71 void moea64_early_bootstrap(vm_offset_t kernelstart,
72 vm_offset_t kernelend);
73 void moea64_mid_bootstrap(vm_offset_t kernelstart,
74 vm_offset_t kernelend);
75 void moea64_late_bootstrap(vm_offset_t kernelstart,
76 vm_offset_t kernelend);
77
78 /* "base" install method for initializing moea64 pmap ifuncs */
79 void moea64_install(void);
80
81 int64_t moea64_pte_replace(struct pvo_entry *, int);
82 int64_t moea64_pte_insert(struct pvo_entry *);
83 int64_t moea64_pte_unset(struct pvo_entry *);
84 int64_t moea64_pte_clear(struct pvo_entry *, uint64_t);
85 int64_t moea64_pte_synch(struct pvo_entry *);
86 int64_t moea64_pte_insert_sp(struct pvo_entry *);
87 int64_t moea64_pte_unset_sp(struct pvo_entry *);
88 int64_t moea64_pte_replace_sp(struct pvo_entry *);
89
90 typedef int64_t (*moea64_pte_replace_t)(struct pvo_entry *, int);
91 typedef int64_t (*moea64_pte_insert_t)(struct pvo_entry *);
92 typedef int64_t (*moea64_pte_unset_t)(struct pvo_entry *);
93 typedef int64_t (*moea64_pte_clear_t)(struct pvo_entry *, uint64_t);
94 typedef int64_t (*moea64_pte_synch_t)(struct pvo_entry *);
95 typedef int64_t (*moea64_pte_insert_sp_t)(struct pvo_entry *);
96 typedef int64_t (*moea64_pte_unset_sp_t)(struct pvo_entry *);
97 typedef int64_t (*moea64_pte_replace_sp_t)(struct pvo_entry *);
98
99 struct moea64_funcs {
100 moea64_pte_replace_t pte_replace;
101 moea64_pte_insert_t pte_insert;
102 moea64_pte_unset_t pte_unset;
103 moea64_pte_clear_t pte_clear;
104 moea64_pte_synch_t pte_synch;
105 moea64_pte_insert_sp_t pte_insert_sp;
106 moea64_pte_unset_sp_t pte_unset_sp;
107 moea64_pte_replace_sp_t pte_replace_sp;
108 };
109
110 extern struct moea64_funcs *moea64_ops;
111
112 static inline uint64_t
moea64_pte_vpn_from_pvo_vpn(const struct pvo_entry * pvo)113 moea64_pte_vpn_from_pvo_vpn(const struct pvo_entry *pvo)
114 {
115 return ((pvo->pvo_vpn >> (ADDR_API_SHFT64 - ADDR_PIDX_SHFT)) &
116 LPTE_AVPN_MASK);
117 }
118
119 /*
120 * Statistics
121 */
122
123 #ifdef MOEA64_STATS
124 extern u_int moea64_pte_valid;
125 extern u_int moea64_pte_overflow;
126 #define STAT_MOEA64(x) x
127 #else
128 #define STAT_MOEA64(x) ((void)0)
129 #endif
130
131 /*
132 * State variables
133 */
134
135 extern int moea64_large_page_shift;
136 extern uint64_t moea64_large_page_size;
137 extern uint64_t moea64_large_page_mask;
138 extern u_long moea64_pteg_count;
139 extern u_long moea64_pteg_mask;
140 extern int n_slbs;
141 extern bool moea64_has_lp_4k_16m;
142
143 #endif /* _POWERPC_AIM_MMU_OEA64_H */
144