1cd76c7513
. primary purpose is to synchronize with <ieeefp.h> which expects a fp_prec from sys/arch/x86/include/ieeefp.h
145 lines
5.6 KiB
C
145 lines
5.6 KiB
C
/* $NetBSD: bus_defs.h,v 1.2 2011/08/25 15:06:10 dyoung Exp $ */
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/*-
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* Copyright (c) 1996, 1997, 1998, 2001 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
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* NASA Ames Research Center.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1996 Charles M. Hannum. All rights reserved.
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* Copyright (c) 1996 Christopher G. Demetriou. 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Christopher G. Demetriou
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* for the NetBSD Project.
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* 4. 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, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _X86_BUS_H_
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#define _X86_BUS_H_
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#include <x86/busdefs.h>
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#ifdef BUS_SPACE_DEBUG
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#define BUS_SPACE_ALIGNED_ADDRESS(p, t) \
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((((u_long)(p)) & (sizeof(t)-1)) == 0)
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#define BUS_SPACE_ALIGNED_POINTER(p, t) BUS_SPACE_ALIGNED_ADDRESS(p, t)
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#else
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#define BUS_SPACE_ALIGNED_POINTER(p, t) ALIGNED_POINTER(p, t)
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#endif /* BUS_SPACE_DEBUG */
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/*
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* Bus address and size types
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*/
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typedef paddr_t bus_addr_t;
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typedef size_t bus_size_t;
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struct bus_space_tag;
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typedef struct bus_space_tag *bus_space_tag_t;
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struct bus_space_tag {
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int bst_type;
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bus_space_tag_t bst_super;
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/* bst_present: bitmap indicating overrides present (1) in *this* tag,
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* bst_exists: bitmap indicating overrides present (1) in *this* tag
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* or in an ancestor's tag (follow bst_super to ancestors)
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*/
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uint64_t bst_present;
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uint64_t bst_exists;
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const struct bus_space_overrides *bst_ov;
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void *bst_ctx;
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};
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typedef vaddr_t bus_space_handle_t;
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typedef struct x86_bus_dma_tag *bus_dma_tag_t;
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typedef struct x86_bus_dmamap *bus_dmamap_t;
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#define BUS_DMA_TAG_VALID(__t) ((__t) != NULL)
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/*
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* bus_dma_segment_t
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*
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* Describes a single contiguous DMA transaction. Values
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* are suitable for programming into DMA registers.
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*/
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typedef struct x86_bus_dma_segment {
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bus_addr_t ds_addr; /* DMA address */
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bus_size_t ds_len; /* length of transfer */
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} bus_dma_segment_t;
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/*
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* bus_dmamap_t
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*
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* Describes a DMA mapping. XXX exposing structure to LKM.
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*/
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struct x86_bus_dmamap {
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/*
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* PRIVATE MEMBERS: not for use by machine-independent code.
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*/
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bus_size_t _dm_size; /* largest DMA transfer mappable */
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int _dm_segcnt; /* number of segs this map can map */
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bus_size_t _dm_maxmaxsegsz; /* fixed largest possible segment */
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bus_size_t _dm_boundary; /* don't cross this */
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bus_addr_t _dm_bounce_thresh; /* bounce threshold; see tag */
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int _dm_flags; /* misc. flags */
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void *_dm_cookie; /* cookie for bus-specific functions */
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/*
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* PUBLIC MEMBERS: these are used by machine-independent code.
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*/
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bus_size_t dm_maxsegsz; /* largest possible segment */
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bus_size_t dm_mapsize; /* size of the mapping */
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int dm_nsegs; /* # valid segments in mapping */
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bus_dma_segment_t dm_segs[1]; /* segments; variable length */
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};
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#endif /* _X86_BUS_H_ */
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