1728aef23d
- Added a generic bhnd_nvram_parser API, with support for the TLV format used on WGT634U devices, the standard BCM NVRAM format used on most modern devices, and the "board text file" format used on some hardware to supply external NVRAM data at runtime (e.g. via an EFI variable). - Extended the bhnd_bus_if and bhnd_nvram_if interfaces to support both string-based and primitive data type variable access, required for common behavior across both SPROM and NVRAM data sources. - Extended the existing SPROM implementation to support the new string-based NVRAM APIs. - Added an abstract bhnd_nvram driver, implementing the bhnd_nvram_if atop the bhnd_nvram_parser API. - Added a CFE-based bhnd_nvram driver to provide read-only access to NVRAM data on MIPS SoCs, pending implementation of a flash-aware bhnd_nvram driver. Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D7489
69 lines
2.5 KiB
C
69 lines
2.5 KiB
C
/*-
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* Copyright (c) 2015-2016 Landon Fuller <landonf@FreeBSD.org>
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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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* 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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* NO WARRANTY
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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_NVRAM_BHND_NVRAMVAR_H_
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#define _BHND_NVRAM_BHND_NVRAMVAR_H_
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#include <sys/param.h>
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#include <sys/bus.h>
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#include "bhnd_nvram_parser.h"
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DECLARE_CLASS(bhnd_nvram_driver);
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int bhnd_nvram_probe(device_t dev);
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int bhnd_nvram_attach(device_t dev, void *data, size_t size,
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bhnd_nvram_format fmt);
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int bhnd_nvram_resume(device_t dev);
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int bhnd_nvram_suspend(device_t dev);
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int bhnd_nvram_detach(device_t dev);
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/**
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* bhnd_nvram driver instance state. Must be first member of all subclass
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* softc structures.
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*/
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struct bhnd_nvram_softc {
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device_t dev;
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struct mtx mtx; /**< nvram mutex */
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struct bhnd_nvram nvram; /**< nvram shadow */
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};
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#define BHND_NVRAM_LOCK_INIT(sc) \
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mtx_init(&(sc)->mtx, device_get_nameunit((sc)->dev), \
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"bhnd_nvram lock", MTX_DEF)
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#define BHND_NVRAM_LOCK(sc) mtx_lock(&(sc)->mtx)
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#define BHND_NVRAM_UNLOCK(sc) mtx_unlock(&(sc)->mtx)
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#define BHND_NVRAM_LOCK_ASSERT(sc, what) mtx_assert(&(sc)->mtx, what)
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#define BHND_NVRAM_LOCK_DESTROY(sc) mtx_destroy(&(sc)->mtx)
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#endif /* _BHND_NVRAM_BHND_NVRAMVAR_H_ */
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