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* Copyright (c) 2001-2004 Jakub Jermar
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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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* - 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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* - 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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* - 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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* 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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/** @addtogroup genarch
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* @brief Headers for NS 16550 serial controller.
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#ifndef KERN_NS16550_H_
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#define KERN_NS16550_H_
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#include <arch/types.h>
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#include <console/chardev.h>
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#define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */
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#define LCR_DLAB 0x80 /** Divisor Latch Access bit. */
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#define MCR_OUT2 0x08 /** OUT2. */
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/** NS16550 registers. */
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ioport8_t rbr; /**< Receiver Buffer Register. */
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ioport8_t ier; /**< Interrupt Enable Register. */
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ioport8_t iir; /**< Interrupt Ident Register (read). */
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ioport8_t fcr; /**< FIFO control register (write). */
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} __attribute__ ((packed));
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ioport8_t lcr; /**< Line Control register. */
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ioport8_t mcr; /**< Modem Control Register. */
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ioport8_t lsr; /**< Line Status Register. */
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} __attribute__ ((packed)) ns16550_t;
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/** Structure representing the ns16550 device. */
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extern ns16550_instance_t *ns16550_init(ns16550_t *, inr_t, cir_t, void *);
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extern void ns16550_wire(ns16550_instance_t *, indev_t *);