2 * Copyright (c) 2005 Peter Grehan
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 #ifndef _MACHINE_MMUVAR_H_
30 #define _MACHINE_MMUVAR_H_
33 * A PowerPC MMU implementation is declared with a kernel object and
34 * an associated method table. The MMU_DEF macro is used to declare
35 * the class, and also links it to the global MMU class list.
39 * static mmu_method_t ppc8xx_methods[] = {
40 * MMUMETHOD(mmu_change_wiring, ppc8xx_mmu_change_wiring),
41 * MMUMETHOD(mmu_clear_modify, ppc8xx_mmu_clear_modify),
42 * MMUMETHOD(mmu_clear_reference, ppc8xx_mmu_clear_reference),
44 * MMUMETHOD(mmu_dev_direct_mapped, ppc8xx_mmu_dev_direct_mapped),
48 * MMU_DEF(ppc8xx, MMU_TYPE_8xx, ppc8xx_methods, sizeof(ppc8xx_mmu_softc));
50 * A single level of inheritance is supported in a similar fashion to
51 * kobj inheritance e.g.
53 * MMU_DEF_1(ppc860c, MMU_TYPE_860c, ppc860c_methods, 0, ppc8xx);
60 * An MMU instance is a kernel object
65 * Utility elements that an instance may use
67 struct mtx mmu_mtx; /* available for instance use */
68 void *mmu_iptr; /* instance data pointer */
71 * Opaque data that can be overlaid with an instance-private
72 * structure. MMU code can test that this is large enough at
73 * compile time with a sizeof() test againt it's softc. There
74 * is also a run-time test when the MMU kernel object is
77 #define MMU_OPAQUESZ 64
78 u_int mmu_opaque[MMU_OPAQUESZ];
81 typedef struct mmu_kobj *mmu_t;
82 typedef struct kobj_class mmu_def_t;
83 #define mmu_method_t kobj_method_t
85 #define MMUMETHOD KOBJMETHOD
87 #define MMU_DEF(name, ident, methods, size) \
90 ident, methods, size, NULL \
92 DATA_SET(mmu_set, name)
94 #define MMU_DEF_INHERIT(name, ident, methods, size, base1) \
96 static kobj_class_t name ## _baseclasses[] = \
99 ident, methods, size, name ## _baseclasses \
101 DATA_SET(mmu_set, name)
106 ident, methods, size, name ## _baseclasses \
108 DATA_SET(mmu_set, name)
114 #define MMU_TYPE_BOOKE "mmu_booke" /* Book-E MMU specification */
115 #define MMU_TYPE_OEA "mmu_oea" /* 32-bit OEA */
116 #define MMU_TYPE_G5 "mmu_g5" /* 64-bit bridge (ibm 970) */
117 #define MMU_TYPE_8xx "mmu_8xx" /* 8xx quicc TLB */
119 #endif /* _MACHINE_MMUVAR_H_ */