Rev 4311 | Details | Compare with Previous | Last modification | View Log | RSS feed
| 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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| 4148 | decky | 41 | #include <ddi/device.h> |
| 4078 | decky | 42 | |
| 43 | static irq_ownership_t dsrlnin_claim(irq_t *irq) |
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| 44 | { |
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| 45 | return IRQ_ACCEPT; |
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| 46 | } |
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| 47 | |||
| 48 | static void dsrlnin_irq_handler(irq_t *irq) |
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| 49 | { |
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| 50 | dsrlnin_instance_t *instance = irq->instance; |
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| 51 | dsrlnin_t *dev = instance->dsrlnin; |
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| 52 | |||
| 4311 | decky | 53 | indev_push_character(instance->srlnin, pio_read_8(&dev->data)); |
| 4078 | decky | 54 | } |
| 55 | |||
| 4311 | decky | 56 | dsrlnin_instance_t *dsrlnin_init(dsrlnin_t *dev, inr_t inr) |
| 4078 | decky | 57 | { |
| 58 | dsrlnin_instance_t *instance |
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| 59 | = malloc(sizeof(dsrlnin_instance_t), FRAME_ATOMIC); |
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| 4311 | decky | 60 | if (instance) { |
| 61 | instance->dsrlnin = dev; |
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| 62 | instance->srlnin = NULL; |
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| 63 | |||
| 64 | irq_initialize(&instance->irq); |
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| 65 | instance->irq.devno = device_assign_devno(); |
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| 66 | instance->irq.inr = inr; |
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| 67 | instance->irq.claim = dsrlnin_claim; |
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| 68 | instance->irq.handler = dsrlnin_irq_handler; |
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| 69 | instance->irq.instance = instance; |
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| 70 | } |
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| 4078 | decky | 71 | |
| 4311 | decky | 72 | return instance; |
| 73 | } |
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| 74 | |||
| 75 | void dsrlnin_wire(dsrlnin_instance_t *instance, indev_t *srlnin) |
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| 76 | { |
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| 77 | ASSERT(instance); |
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| 78 | ASSERT(srlnin); |
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| 4078 | decky | 79 | |
| 4311 | decky | 80 | instance->srlnin = srlnin; |
| 4078 | decky | 81 | irq_register(&instance->irq); |
| 82 | } |
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| 83 | |||
| 84 | /** @} |
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| 85 | */ |