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| Rev | Author | Line No. | Line |
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| 4078 | decky | 1 | /* |
| 2 | * Copyright (c) 2009 Martin Decky |
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| 3 | * All rights reserved. |
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| 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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| 34 | * @brief Dummy serial line input. |
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| 35 | */ |
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| 36 | |||
| 37 | #include <genarch/drivers/dsrln/dsrlnin.h> |
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| 38 | #include <console/chardev.h> |
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| 39 | #include <mm/slab.h> |
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| 40 | #include <arch/asm.h> |
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| 41 | |||
| 42 | indev_operations_t kbrdin_ops = { |
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| 43 | .poll = NULL |
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| 44 | }; |
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| 45 | |||
| 46 | static irq_ownership_t dsrlnin_claim(irq_t *irq) |
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| 47 | { |
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| 48 | return IRQ_ACCEPT; |
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| 49 | } |
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| 50 | |||
| 51 | static void dsrlnin_irq_handler(irq_t *irq) |
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| 52 | { |
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| 53 | dsrlnin_instance_t *instance = irq->instance; |
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| 54 | dsrlnin_t *dev = instance->dsrlnin; |
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| 55 | |||
| 56 | indev_push_character(&instance->kbrdin, pio_read_8(&dev->data)); |
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| 57 | } |
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| 58 | |||
| 59 | indev_t *dsrlnin_init(dsrlnin_t *dev, devno_t devno, inr_t inr) |
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| 60 | { |
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| 61 | dsrlnin_instance_t *instance |
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| 62 | = malloc(sizeof(dsrlnin_instance_t), FRAME_ATOMIC); |
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| 63 | if (!instance) |
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| 64 | return NULL; |
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| 65 | |||
| 66 | indev_initialize("dsrlnin", &instance->kbrdin, &kbrdin_ops); |
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| 67 | |||
| 68 | instance->devno = devno; |
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| 69 | instance->dsrlnin = dev; |
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| 70 | |||
| 71 | irq_initialize(&instance->irq); |
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| 72 | instance->irq.devno = devno; |
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| 73 | instance->irq.inr = inr; |
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| 74 | instance->irq.claim = dsrlnin_claim; |
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| 75 | instance->irq.handler = dsrlnin_irq_handler; |
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| 76 | instance->irq.instance = instance; |
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| 77 | irq_register(&instance->irq); |
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| 78 | |||
| 79 | return &instance->kbrdin; |
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| 80 | } |
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| 81 | |||
| 82 | /** @} |
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| 83 | */ |