80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
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/*-
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* Copyright (c) 2017 The FreeBSD Foundation
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* All rights reserved.
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*
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* This software was developed by Landon Fuller under sponsorship from
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* the FreeBSD Foundation.
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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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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
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* redistribution must be conditioned upon including a substantially
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* similar Disclaimer requirement for further binary redistribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
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* AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
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* OR 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
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* IN 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
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* THE POSSIBILITY OF SUCH DAMAGES.
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*
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* $FreeBSD$
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*/
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#ifndef _BHND_EROM_BHND_EROMVAR_H_
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#define _BHND_EROM_BHND_EROMVAR_H_
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#include <sys/param.h>
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#include "bhnd_erom.h"
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/* forward declarations */
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struct bhnd_erom_io;
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struct bhnd_erom_iobus;
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/** @see bhnd_erom_io_map() */
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typedef int (bhnd_erom_io_map_t)(struct bhnd_erom_io *eio,
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bhnd_addr_t addr, bhnd_size_t size);
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/** @see bhnd_erom_io_read() */
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typedef uint32_t (bhnd_erom_io_read_t)(struct bhnd_erom_io *eio,
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bhnd_size_t offset, u_int width);
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/** @see bhnd_erom_io_fini() */
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typedef void (bhnd_erom_io_fini_t)(struct bhnd_erom_io *eio);
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/**
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* Abstract EROM bus I/O support.
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*/
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struct bhnd_erom_io {
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bhnd_erom_io_map_t *map; /**< @see bhnd_erom_io_map() */
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bhnd_erom_io_read_t *read; /**< @see bhnd_erom_io_read() */
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bhnd_erom_io_fini_t *fini; /**< @see bhnd_erom_io_fini(). May be NULL */
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};
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/**
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* EROM bus handle/tag I/O instance state.
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*/
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struct bhnd_erom_iobus {
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struct bhnd_erom_io eio;
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bhnd_addr_t addr; /**< the address of @p bsh */
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bhnd_size_t size; /**< the size of @p bsh */
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bus_space_tag_t bst; /**< bus space tag */
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bus_space_handle_t bsh; /**< bus space handle mapping the full enumeration space */
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bool mapped; /**< if a mapping is active */
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bus_size_t offset; /**< the current mapped offset within bsh */
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bus_size_t limit; /**< the current mapped size relative to offset */
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};
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#endif /* _BHND_EROM_BHND_EROMVAR_H_ */
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