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annotate packages/hal/common/current/include/drv_api.h @ 177:4c750ce71ae3

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Merge from eCos master repository on 2001-08-10-19:22:57-BST
author jlarmour
date Fri, 10 Aug 2001 19:27:55 +0000
parents eb9fd8c04db3
children e0c0827131d1
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1 #ifndef CYGONCE_HAL_DRV_API_H
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2 #define CYGONCE_HAL_DRV_API_H
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3
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4 /*==========================================================================
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5 //
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6 // drv_api.h
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7 //
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8 // Native API for Kernel
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9 //
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10 //==========================================================================
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11 //####COPYRIGHTBEGIN####
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12 //
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13 // -------------------------------------------
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14 // The contents of this file are subject to the Red Hat eCos Public License
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15 // Version 1.1 (the "License"); you may not use this file except in
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16 // compliance with the License. You may obtain a copy of the License at
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17 // http://www.redhat.com/
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18 //
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19 // Software distributed under the License is distributed on an "AS IS"
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20 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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21 // License for the specific language governing rights and limitations under
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22 // the License.
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23 //
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24 // The Original Code is eCos - Embedded Configurable Operating System,
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25 // released September 30, 1998.
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26 //
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27 // The Initial Developer of the Original Code is Red Hat.
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28 // Portions created by Red Hat are
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29 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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30 // All Rights Reserved.
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31 // -------------------------------------------
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32 //
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33 //####COPYRIGHTEND####
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34 //==========================================================================
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35 //#####DESCRIPTIONBEGIN####
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36 //
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37 // Author(s): nickg
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38 // Date: 1999-02-24
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39 // Purpose: Driver API
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40 // Description: This file defines the API used by device drivers to access
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41 // system services. When the kernel is present it maps directly
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42 // to the Kernel C API. When the kernel is absent, it is provided
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43 // by a set of HAL functions.
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44 //
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45 // Usage: #include <cyg/kernel/kapi.h>
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46 //
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47 //####DESCRIPTIONEND####
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48 //
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49 //========================================================================*/
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50
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51 #include <pkgconf/hal.h>
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52 #include <cyg/infra/cyg_type.h>
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53
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54 #ifdef CYGPKG_KERNEL
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55
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56 /*------------------------------------------------------------------------*/
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57 /* Kernel co-resident version of API */
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58
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59 #include <pkgconf/kernel.h>
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60
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61 #ifndef CYGFUN_KERNEL_API_C
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62 #error Driver API requres Kernel API to be present
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63 #endif
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64
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65 #include <cyg/kernel/kapi.h>
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66
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67 #define cyg_drv_isr_lock cyg_interrupt_disable
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68 #define cyg_drv_isr_unlock cyg_interrupt_enable
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69
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70 #define cyg_drv_dsr_lock cyg_scheduler_lock
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71 #define cyg_drv_dsr_unlock cyg_scheduler_unlock
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72
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73 #define cyg_drv_mutex_t cyg_mutex_t
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74 #define cyg_drv_mutex_init cyg_mutex_init
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75 #define cyg_drv_mutex_destroy cyg_mutex_destroy
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76 #define cyg_drv_mutex_lock cyg_mutex_lock
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77 #define cyg_drv_mutex_trylock cyg_mutex_trylock
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78 #define cyg_drv_mutex_unlock cyg_mutex_unlock
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79 #define cyg_drv_mutex_release cyg_mutex_release
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80
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81 #define cyg_drv_cond_t cyg_cond_t
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82 #define cyg_drv_cond_init cyg_cond_init
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83 #define cyg_drv_cond_destroy cyg_cond_destroy
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84 #define cyg_drv_cond_wait cyg_cond_wait
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85 #define cyg_drv_cond_signal cyg_cond_signal
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86 #define cyg_drv_cond_broadcast cyg_cond_broadcast
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87
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88 #define cyg_drv_interrupt_create cyg_interrupt_create
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89 #define cyg_drv_interrupt_delete cyg_interrupt_delete
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90 #define cyg_drv_interrupt_attach cyg_interrupt_attach
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91 #define cyg_drv_interrupt_detach cyg_interrupt_detach
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92 #define cyg_drv_interrupt_mask cyg_interrupt_mask
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93 #define cyg_drv_interrupt_unmask cyg_interrupt_unmask
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94 #define cyg_drv_interrupt_acknowledge cyg_interrupt_acknowledge
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95 #define cyg_drv_interrupt_configure cyg_interrupt_configure
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96 #define cyg_drv_interrupt_level cyg_interrupt_level
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97 #define cyg_drv_interrupt_set_cpu cyg_interrupt_set_cpu
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98 #define cyg_drv_interrupt_get_cpu cyg_interrupt_get_cpu
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99
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100 #define cyg_drv_spinlock_t cyg_spinlock_t
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101 #define cyg_drv_spinlock_init cyg_spinlock_init
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102 #define cyg_drv_spinlock_spin cyg_spinlock_spin
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103 #define cyg_drv_spinlock_clear cyg_spinlock_clear
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104 #define cyg_drv_spinlock_try cyg_spinlock_try
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105 #define cyg_drv_spinlock_test cyg_spinlock_test
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106 #define cyg_drv_spinlock_spin_intsave cyg_spinlock_spin_intsave
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107 #define cyg_drv_spinlock_clear_intsave cyg_spinlock_clear_intsave
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108
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109 #else /* CYGPKG_KERNEL */
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110
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111 /*------------------------------------------------------------------------*/
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112 /* Non-kernel version of API */
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113
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114 typedef CYG_ADDRWORD cyg_addrword_t; /* May hold pointer or word */
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115 typedef cyg_addrword_t cyg_handle_t; /* Object handle */
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116 typedef cyg_uint32 cyg_priority_t; /* type for priorities */
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117 typedef cyg_uint32 cyg_vector_t; /* Interrupt vector id */
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118 typedef cyg_uint32 cyg_cpu_t; /* CPU id */
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119 typedef int cyg_bool_t;
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120 typedef cyg_int32 cyg_code_t; /* type for various codes */
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121
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122 typedef cyg_uint32 cyg_ISR_t( cyg_vector_t vector, cyg_addrword_t data);
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123 typedef void cyg_DSR_t(cyg_vector_t vector,
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124 cyg_ucount32 count,
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125 cyg_addrword_t data);
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126
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127
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128 externC void cyg_drv_isr_lock(void);
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129 externC void cyg_drv_isr_unlock(void);
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130
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131 externC void cyg_drv_dsr_lock(void);
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132 externC void cyg_drv_dsr_unlock(void);
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133
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134 typedef struct
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135 {
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136 cyg_atomic lock;
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137 } cyg_drv_mutex_t;
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138
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139 externC void cyg_drv_mutex_init( cyg_drv_mutex_t *mutex );
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140 externC void cyg_drv_mutex_destroy( cyg_drv_mutex_t *mutex );
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141 externC cyg_bool_t cyg_drv_mutex_lock( cyg_drv_mutex_t *mutex );
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142 externC cyg_bool_t cyg_drv_mutex_trylock( cyg_drv_mutex_t *mutex );
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143 externC void cyg_drv_mutex_unlock( cyg_drv_mutex_t *mutex );
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144 externC void cyg_drv_mutex_release( cyg_drv_mutex_t *mutex );
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145
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146 typedef struct
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147 {
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148 cyg_atomic wait;
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149 cyg_drv_mutex_t *mutex;
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150 } cyg_drv_cond_t;
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151
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152 externC void cyg_drv_cond_init( cyg_drv_cond_t *cond, cyg_drv_mutex_t *mutex );
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153 externC void cyg_drv_cond_destroy( cyg_drv_cond_t *cond );
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154 externC cyg_bool_t cyg_drv_cond_wait( cyg_drv_cond_t *cond );
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155 externC void cyg_drv_cond_signal( cyg_drv_cond_t *cond );
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156 externC void cyg_drv_cond_broadcast( cyg_drv_cond_t *cond );
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157
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158 typedef struct cyg_interrupt
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159 {
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160 cyg_vector_t vector;
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161 cyg_priority_t priority;
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162 cyg_ISR_t *isr;
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163 cyg_DSR_t *dsr;
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164 CYG_ADDRWORD data;
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165
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166 struct cyg_interrupt* volatile next_dsr;
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167 volatile cyg_int32 dsr_count;
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168
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169 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN
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170 struct cyg_interrupt *next;
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171 #endif
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172
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173 } cyg_interrupt;
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174
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175 externC void cyg_drv_interrupt_create(
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176 cyg_vector_t vector,
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177 cyg_priority_t priority,
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178 cyg_addrword_t data,
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179 cyg_ISR_t *isr,
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180 cyg_DSR_t *dsr,
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181 cyg_handle_t *handle,
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182 cyg_interrupt *intr
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183 );
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184 externC void cyg_drv_interrupt_delete( cyg_handle_t interrupt );
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185 externC void cyg_drv_interrupt_attach( cyg_handle_t interrupt );
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186 externC void cyg_drv_interrupt_detach( cyg_handle_t interrupt );
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187
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188 externC void cyg_drv_interrupt_mask( cyg_vector_t vector );
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189 externC void cyg_drv_interrupt_unmask( cyg_vector_t vector );
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190 externC void cyg_drv_interrupt_acknowledge( cyg_vector_t vector );
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191 externC void cyg_drv_interrupt_configure(
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192 cyg_vector_t vector,
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193 cyg_bool_t level,
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194 cyg_bool_t up
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195 );
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196 externC void cyg_drv_interrupt_level( cyg_vector_t vector, cyg_priority_t level );
177
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197 externC void cyg_drv_interrupt_set_cpu( cyg_vector_t vector, cyg_cpu_t cpu );
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198 externC cyg_cpu_t cyg_drv_interrupt_get_cpu( cyg_vector_t vector );
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199
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200
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201 enum cyg_ISR_results
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202 {
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203 CYG_ISR_HANDLED = 1, /* Interrupt was handled */
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204 CYG_ISR_CALL_DSR = 2 /* Schedule DSR */
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205 };
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206
177
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207
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208 typedef struct
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209 {
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210 cyg_atomic lock;
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211 } cyg_drv_spinlock_t;
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212
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213 void cyg_drv_spinlock_init(
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214 cyg_drv_spinlock_t *lock, /* spinlock to initialize */
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215 cyg_bool_t locked /* init locked or unlocked */
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216 );
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217
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218 void cyg_drv_spinlock_destroy( cyg_drv_spinlock_t *lock );
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219
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220 void cyg_drv_spinlock_spin( cyg_drv_spinlock_t *lock );
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221
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222 void cyg_drv_spinlock_clear( cyg_drv_spinlock_t *lock );
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223
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224 cyg_bool_t cyg_drv_spinlock_try( cyg_drv_spinlock_t *lock );
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225
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226 cyg_bool_t cyg_drv_spinlock_test( cyg_drv_spinlock_t *lock );
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227
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228 void cyg_drv_spinlock_spin_intsave( cyg_drv_spinlock_t *lock,
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229 cyg_addrword_t *istate );
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230
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231 void cyg_drv_spinlock_clear_intsave( cyg_drv_spinlock_t *lock,
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232 cyg_addrword_t istate );
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233
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234 #endif /* CYGPKG_KERNEL */
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235
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236 /*------------------------------------------------------------------------*/
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237 /* EOF drv_api.h */
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238 #endif // CYGONCE_HAL_DRV_API_H