1 | /* |
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2 | * Copyright (c) 2011 embedded brains GmbH. All rights reserved. |
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3 | * |
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4 | * embedded brains GmbH |
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5 | * Obere Lagerstr. 30 |
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6 | * 82178 Puchheim |
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7 | * Germany |
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8 | * <rtems@embedded-brains.de> |
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9 | * |
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10 | * The license and distribution terms for this file may be |
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11 | * found in the file LICENSE in this distribution or at |
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12 | * http://www.rtems.com/license/LICENSE. |
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13 | * |
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14 | * $Id$ |
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15 | */ |
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16 | |
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17 | #ifdef HAVE_CONFIG_H |
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18 | #include "config.h" |
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19 | #endif |
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20 | |
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21 | #include <rtems/devzero.h> |
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22 | |
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23 | #include <string.h> |
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24 | |
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25 | #include <rtems/libio.h> |
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26 | |
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27 | rtems_device_driver dev_zero_initialize( |
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28 | rtems_device_major_number major, |
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29 | rtems_device_minor_number minor __attribute__((unused)), |
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30 | void *arg __attribute__((unused)) |
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31 | ) |
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32 | { |
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33 | return rtems_io_register_name(DEVZERO_DEVICE_NAME, major, 0); |
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34 | } |
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35 | |
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36 | rtems_device_driver dev_zero_open( |
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37 | rtems_device_major_number major __attribute__((unused)), |
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38 | rtems_device_minor_number minor __attribute__((unused)), |
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39 | void *arg __attribute__((unused)) |
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40 | ) |
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41 | { |
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42 | return RTEMS_SUCCESSFUL; |
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43 | } |
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44 | |
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45 | rtems_device_driver dev_zero_close( |
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46 | rtems_device_major_number major __attribute__((unused)), |
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47 | rtems_device_minor_number minor __attribute__((unused)), |
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48 | void *arg __attribute__((unused)) |
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49 | ) |
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50 | { |
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51 | return RTEMS_SUCCESSFUL; |
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52 | } |
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53 | |
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54 | rtems_device_driver dev_zero_read( |
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55 | rtems_device_major_number major __attribute__((unused)), |
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56 | rtems_device_minor_number minor __attribute__((unused)), |
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57 | void *arg __attribute__((unused)) |
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58 | ) |
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59 | { |
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60 | rtems_libio_rw_args_t *rw = arg; |
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61 | |
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62 | rw->bytes_moved = rw->count; |
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63 | memset(rw->buffer, 0, rw->count); |
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64 | |
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65 | return RTEMS_SUCCESSFUL; |
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66 | } |
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67 | |
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68 | rtems_device_driver dev_zero_write( |
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69 | rtems_device_major_number major __attribute__((unused)), |
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70 | rtems_device_minor_number minor __attribute__((unused)), |
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71 | void *arg |
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72 | ) |
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73 | { |
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74 | rtems_libio_rw_args_t *rw = arg; |
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75 | |
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76 | rw->bytes_moved = rw->count; |
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77 | |
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78 | return RTEMS_SUCCESSFUL; |
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79 | } |
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80 | |
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81 | rtems_device_driver dev_zero_control( |
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82 | rtems_device_major_number major __attribute__((unused)), |
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83 | rtems_device_minor_number minor __attribute__((unused)), |
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84 | void *arg __attribute__((unused)) |
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85 | ) |
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86 | { |
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87 | return RTEMS_IO_ERROR; |
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88 | } |
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