1fc1a22868
A PL061 is a simple 8 pin GPIO controller. This GPIO device is used to signal an internal request for shutdown on some virtual machines including Arm-based Amazon EC2 instances. Submitted by: Ali Saidi <alisaidi_amazon.com> (previouss version) Reviewed by: Ali Saidi, manu Differential Revision: https://reviews.freebsd.org/D24065
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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*
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* Copyright (c) 2020 Amazon.com, Inc. or its affiliates.
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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 __DEV_PL061_H__
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#define __DEV_PL061_H__
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DECLARE_CLASS(pl061_driver);
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#define PL061_NUM_GPIO 8
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struct pl061_pin_irqsrc {
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struct intr_irqsrc isrc;
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uint32_t irq;
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uint32_t mode;
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};
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struct pl061_softc {
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device_t sc_dev;
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device_t sc_busdev;
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struct mtx sc_mtx;
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struct resource *sc_mem_res;
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struct resource *sc_irq_res;
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void *sc_irq_hdlr;
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int sc_mem_rid;
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int sc_irq_rid;
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struct pl061_pin_irqsrc sc_isrcs[PL061_NUM_GPIO];
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};
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int pl061_attach(device_t);
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int pl061_detach(device_t);
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#endif /* __DEV_PL061_H__ */
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