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| Rev | Author | Line No. | Line |
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| 1844 | jermar | 1 | /* |
| 2071 | jermar | 2 | * Copyright (c) 2001-2004 Jakub Jermar |
| 1844 | jermar | 3 | * All rights reserved. |
| 4 | * |
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| 5 | * Redistribution and use in source and binary forms, with or without |
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| 6 | * modification, are permitted provided that the following conditions |
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| 7 | * are met: |
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| 8 | * |
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| 9 | * - Redistributions of source code must retain the above copyright |
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| 10 | * notice, this list of conditions and the following disclaimer. |
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| 11 | * - Redistributions in binary form must reproduce the above copyright |
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| 12 | * notice, this list of conditions and the following disclaimer in the |
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| 13 | * documentation and/or other materials provided with the distribution. |
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| 14 | * - The name of the author may not be used to endorse or promote products |
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| 15 | * derived from this software without specific prior written permission. |
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| 16 | * |
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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| 27 | */ |
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| 28 | |||
| 29 | /** @addtogroup genarch |
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| 30 | * @{ |
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| 31 | */ |
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| 32 | /** |
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| 33 | * @file |
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| 4042 | jermar | 34 | * @brief Headers for NS 16550 serial controller. |
| 1844 | jermar | 35 | */ |
| 36 | |||
| 37 | #ifndef KERN_NS16550_H_ |
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| 38 | #define KERN_NS16550_H_ |
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| 39 | |||
| 3655 | jermar | 40 | #include <ddi/irq.h> |
| 3577 | vana | 41 | #include <arch/types.h> |
| 4042 | jermar | 42 | #include <console/chardev.h> |
| 3907 | decky | 43 | |
| 3577 | vana | 44 | #define IER_ERBFI 0x01 /** Enable Receive Buffer Full Interrupt. */ |
| 45 | |||
| 46 | #define LCR_DLAB 0x80 /** Divisor Latch Access bit. */ |
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| 47 | |||
| 3646 | jermar | 48 | #define MCR_OUT2 0x08 /** OUT2. */ |
| 49 | |||
| 3934 | jermar | 50 | /** NS16550 registers. */ |
| 51 | struct ns16550 { |
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| 52 | ioport8_t rbr; /**< Receiver Buffer Register. */ |
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| 53 | ioport8_t ier; /**< Interrupt Enable Register. */ |
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| 54 | union { |
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| 55 | ioport8_t iir; /**< Interrupt Ident Register (read). */ |
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| 56 | ioport8_t fcr; /**< FIFO control register (write). */ |
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| 57 | } __attribute__ ((packed)); |
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| 58 | ioport8_t lcr; /**< Line Control register. */ |
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| 59 | ioport8_t mcr; /**< Modem Control Register. */ |
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| 60 | ioport8_t lsr; /**< Line Status Register. */ |
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| 61 | } __attribute__ ((packed)); |
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| 62 | typedef struct ns16550 ns16550_t; |
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| 63 | |||
| 3577 | vana | 64 | /** Structure representing the ns16550 device. */ |
| 3934 | jermar | 65 | typedef struct ns16550_instance { |
| 3577 | vana | 66 | devno_t devno; |
| 3934 | jermar | 67 | ns16550_t *ns16550; |
| 3938 | jermar | 68 | irq_t irq; |
| 4042 | jermar | 69 | chardev_t *devout; |
| 3934 | jermar | 70 | } ns16550_instance_t; |
| 3577 | vana | 71 | |
| 4042 | jermar | 72 | extern bool ns16550_init(ns16550_t *, devno_t, inr_t, cir_t, void *, |
| 73 | chardev_t *); |
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| 3941 | jermar | 74 | extern irq_ownership_t ns16550_claim(irq_t *); |
| 3934 | jermar | 75 | extern void ns16550_irq_handler(irq_t *); |
| 3577 | vana | 76 | |
| 77 | #endif |
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| 78 | |||
| 1844 | jermar | 79 | /** @} |
| 80 | */ |