63 lines
2.6 KiB
C
63 lines
2.6 KiB
C
/* $NetBSD: iommuvar.h,v 1.2 1999/06/20 00:51:29 eeh Exp $ */
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/*
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* Copyright (c) 1999 Matthew R. Green
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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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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* 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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#ifndef _SPARC64_DEV_IOMMUVAR_H_
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#define _SPARC64_DEV_IOMMUVAR_H_
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/*
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* per-IOMMU state
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*/
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struct iommu_state {
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paddr_t is_ptsb; /* TSB physical address */
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int64_t *is_tsb; /* TSB virtual address */
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int is_tsbsize; /* 0 = 8K, ... */
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u_int is_dvmabase;
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int64_t is_cr; /* IOMMU control regiter value */
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struct extent *is_dvmamap; /* DVMA map for this instance */
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paddr_t is_flushpa; /* used to flush the SBUS */
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/* Needs to be volatile or egcs optimizes away loads */
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volatile int64_t is_flush;
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/* copies of our parents state, to allow us to be self contained */
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bus_space_tag_t is_bustag; /* our bus tag */
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struct iommureg *is_iommu; /* IOMMU registers */
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struct iommu_strbuf *is_sb; /* streaming buffer */
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};
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/* interfaces for PCI/SBUS code */
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void iommu_init __P((char *, struct iommu_state *, int));
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void iommu_reset __P((struct iommu_state *));
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void iommu_enter __P((struct iommu_state *, vaddr_t, int64_t, int));
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void iommu_remove __P((struct iommu_state *, vaddr_t, size_t));
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int iommu_flush __P((struct iommu_state *));
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#endif /* _SPARC64_DEV_IOMMUVAR_H_ */
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