33529b98d5
include/mmuvar.h - Change the MMU_DEF macro to also create the class definition as well as define the DATA_SET. Add a macro, MMU_DEF_INHERIT, which has an extra parameter specifying the MMU class to inherit methods from. Update the comments at the start of the header file to describe the new macros. booke/pmap.c aim/mmu_oea.c aim/mmu_oea64.c - Collapse mmu_def_t declaration into updated MMU_DEF macro The MMU_DEF_INHERIT macro will be used in the PS3 MMU implementation to allow it to inherit the stock powerpc64 MMU methods. Reviewed by: nwhitehorn
120 lines
3.7 KiB
C
120 lines
3.7 KiB
C
/*-
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* Copyright (c) 2005 Peter Grehan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _MACHINE_MMUVAR_H_
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#define _MACHINE_MMUVAR_H_
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/*
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* A PowerPC MMU implementation is declared with a kernel object and
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* an associated method table. The MMU_DEF macro is used to declare
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* the class, and also links it to the global MMU class list.
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*
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* e.g.
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*
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* static mmu_method_t ppc8xx_methods[] = {
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* MMUMETHOD(mmu_change_wiring, ppc8xx_mmu_change_wiring),
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* MMUMETHOD(mmu_clear_modify, ppc8xx_mmu_clear_modify),
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* MMUMETHOD(mmu_clear_reference, ppc8xx_mmu_clear_reference),
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* ...
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* MMUMETHOD(mmu_dev_direct_mapped, ppc8xx_mmu_dev_direct_mapped),
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* { 0, 0 }
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* };
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*
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* MMU_DEF(ppc8xx, MMU_TYPE_8xx, ppc8xx_methods, sizeof(ppc8xx_mmu_softc));
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*
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* A single level of inheritance is supported in a similar fashion to
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* kobj inheritance e.g.
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*
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* MMU_DEF_1(ppc860c, MMU_TYPE_860c, ppc860c_methods, 0, ppc8xx);
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*/
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#include <sys/kobj.h>
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struct mmu_kobj {
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/*
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* An MMU instance is a kernel object
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*/
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KOBJ_FIELDS;
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/*
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* Utility elements that an instance may use
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*/
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struct mtx mmu_mtx; /* available for instance use */
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void *mmu_iptr; /* instance data pointer */
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/*
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* Opaque data that can be overlaid with an instance-private
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* structure. MMU code can test that this is large enough at
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* compile time with a sizeof() test againt it's softc. There
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* is also a run-time test when the MMU kernel object is
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* registered.
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*/
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#define MMU_OPAQUESZ 64
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u_int mmu_opaque[MMU_OPAQUESZ];
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};
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typedef struct mmu_kobj *mmu_t;
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typedef struct kobj_class mmu_def_t;
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#define mmu_method_t kobj_method_t
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#define MMUMETHOD KOBJMETHOD
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#define MMU_DEF(name, ident, methods, size) \
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\
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mmu_def_t name = { \
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ident, methods, size, NULL \
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}; \
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DATA_SET(mmu_set, name)
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#define MMU_DEF_INHERIT(name, ident, methods, size, base1) \
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\
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static kobj_class_t name ## _baseclasses[] = \
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{ &base1, NULL }; \
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mmu_def_t name = { \
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ident, methods, size, name ## _baseclasses \
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}; \
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DATA_SET(mmu_set, name)
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#if 0
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mmu_def_t name = { \
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ident, methods, size, name ## _baseclasses \
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};
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DATA_SET(mmu_set, name)
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#endif
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/*
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* Known MMU names
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*/
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#define MMU_TYPE_BOOKE "mmu_booke" /* Book-E MMU specification */
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#define MMU_TYPE_OEA "mmu_oea" /* 32-bit OEA */
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#define MMU_TYPE_G5 "mmu_g5" /* 64-bit bridge (ibm 970) */
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#define MMU_TYPE_8xx "mmu_8xx" /* 8xx quicc TLB */
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#endif /* _MACHINE_MMUVAR_H_ */
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