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annotate packages/hal/common/current/include/drv_api.h @ 208:e0c0827131d1 ecos

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Merge from eCos master repository on 2002-05-20-20:11:54-BST
author jlarmour
date Mon, 20 May 2002 22:19:26 +0000
parents 4c750ce71ae3
children d2c90368aeef
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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 //==========================================================================
208
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11 //####ECOSGPLCOPYRIGHTBEGIN####
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12 // -------------------------------------------
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13 // This file is part of eCos, the Embedded Configurable Operating System.
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14 // Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
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15 //
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16 // eCos is free software; you can redistribute it and/or modify it under
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17 // the terms of the GNU General Public License as published by the Free
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18 // Software Foundation; either version 2 or (at your option) any later version.
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19 //
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20 // eCos is distributed in the hope that it will be useful, but WITHOUT ANY
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21 // WARRANTY; without even the implied warranty of MERCHANTABILITY or
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22 // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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23 // for more details.
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24 //
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25 // You should have received a copy of the GNU General Public License along
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26 // with eCos; if not, write to the Free Software Foundation, Inc.,
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27 // 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
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28 //
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29 // As a special exception, if other files instantiate templates or use macros
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30 // or inline functions from this file, or you compile this file and link it
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31 // with other works to produce a work based on this file, this file does not
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32 // by itself cause the resulting work to be covered by the GNU General Public
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33 // License. However the source code for this file must still be made available
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34 // in accordance with section (3) of the GNU General Public License.
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35 //
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36 // This exception does not invalidate any other reasons why a work based on
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37 // this file might be covered by the GNU General Public License.
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38 //
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39 // Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
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40 // at http://sources.redhat.com/ecos/ecos-license
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41 // -------------------------------------------
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42 //####ECOSGPLCOPYRIGHTEND####
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43 //==========================================================================
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44 //#####DESCRIPTIONBEGIN####
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45 //
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46 // Author(s): nickg
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47 // Date: 1999-02-24
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48 // Purpose: Driver API
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49 // Description: This file defines the API used by device drivers to access
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50 // system services. When the kernel is present it maps directly
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51 // to the Kernel C API. When the kernel is absent, it is provided
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52 // by a set of HAL functions.
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53 //
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54 // Usage: #include <cyg/kernel/kapi.h>
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55 //
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56 //####DESCRIPTIONEND####
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57 //
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58 //========================================================================*/
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59
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60 #include <pkgconf/hal.h>
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61 #include <cyg/infra/cyg_type.h>
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62
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63 #ifdef CYGPKG_KERNEL
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64
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65 /*------------------------------------------------------------------------*/
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66 /* Kernel co-resident version of API */
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67
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68 #include <pkgconf/kernel.h>
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69
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70 #ifndef CYGFUN_KERNEL_API_C
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71 #error Driver API requres Kernel API to be present
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72 #endif
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73
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74 #include <cyg/kernel/kapi.h>
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75
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76 #define cyg_drv_isr_lock cyg_interrupt_disable
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77 #define cyg_drv_isr_unlock cyg_interrupt_enable
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78
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79 #define cyg_drv_dsr_lock cyg_scheduler_lock
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80 #define cyg_drv_dsr_unlock cyg_scheduler_unlock
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81
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82 #define cyg_drv_mutex_t cyg_mutex_t
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83 #define cyg_drv_mutex_init cyg_mutex_init
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84 #define cyg_drv_mutex_destroy cyg_mutex_destroy
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85 #define cyg_drv_mutex_lock cyg_mutex_lock
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86 #define cyg_drv_mutex_trylock cyg_mutex_trylock
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87 #define cyg_drv_mutex_unlock cyg_mutex_unlock
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88 #define cyg_drv_mutex_release cyg_mutex_release
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89
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90 #define cyg_drv_cond_t cyg_cond_t
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91 #define cyg_drv_cond_init cyg_cond_init
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92 #define cyg_drv_cond_destroy cyg_cond_destroy
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93 #define cyg_drv_cond_wait cyg_cond_wait
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94 #define cyg_drv_cond_signal cyg_cond_signal
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95 #define cyg_drv_cond_broadcast cyg_cond_broadcast
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96
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97 #define cyg_drv_interrupt_create cyg_interrupt_create
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98 #define cyg_drv_interrupt_delete cyg_interrupt_delete
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99 #define cyg_drv_interrupt_attach cyg_interrupt_attach
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100 #define cyg_drv_interrupt_detach cyg_interrupt_detach
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101 #define cyg_drv_interrupt_mask cyg_interrupt_mask
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102 #define cyg_drv_interrupt_unmask cyg_interrupt_unmask
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103 #define cyg_drv_interrupt_mask_intunsafe cyg_interrupt_mask_intunsafe
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104 #define cyg_drv_interrupt_unmask_intunsafe cyg_interrupt_unmask_intunsafe
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105 #define cyg_drv_interrupt_acknowledge cyg_interrupt_acknowledge
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106 #define cyg_drv_interrupt_configure cyg_interrupt_configure
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107 #define cyg_drv_interrupt_level cyg_interrupt_level
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108 #define cyg_drv_interrupt_set_cpu cyg_interrupt_set_cpu
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109 #define cyg_drv_interrupt_get_cpu cyg_interrupt_get_cpu
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110
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111 #define cyg_drv_spinlock_t cyg_spinlock_t
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112 #define cyg_drv_spinlock_init cyg_spinlock_init
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113 #define cyg_drv_spinlock_spin cyg_spinlock_spin
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114 #define cyg_drv_spinlock_clear cyg_spinlock_clear
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115 #define cyg_drv_spinlock_try cyg_spinlock_try
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116 #define cyg_drv_spinlock_test cyg_spinlock_test
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117 #define cyg_drv_spinlock_spin_intsave cyg_spinlock_spin_intsave
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118 #define cyg_drv_spinlock_clear_intsave cyg_spinlock_clear_intsave
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119
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120 #else /* CYGPKG_KERNEL */
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121
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122 /*------------------------------------------------------------------------*/
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123 /* Non-kernel version of API */
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124
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125 typedef CYG_ADDRWORD cyg_addrword_t; /* May hold pointer or word */
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126 typedef cyg_addrword_t cyg_handle_t; /* Object handle */
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127 typedef cyg_uint32 cyg_priority_t; /* type for priorities */
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128 typedef cyg_uint32 cyg_vector_t; /* Interrupt vector id */
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129 typedef cyg_uint32 cyg_cpu_t; /* CPU id */
208
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130 typedef int cyg_bool_t;
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131 typedef cyg_int32 cyg_code_t; /* type for various codes */
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132
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133 typedef cyg_uint32 cyg_ISR_t( cyg_vector_t vector, cyg_addrword_t data);
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134 typedef void cyg_DSR_t(cyg_vector_t vector,
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135 cyg_ucount32 count,
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136 cyg_addrword_t data);
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137
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138
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139 externC void cyg_drv_isr_lock(void);
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140 externC void cyg_drv_isr_unlock(void);
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141
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142 externC void cyg_drv_dsr_lock(void);
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143 externC void cyg_drv_dsr_unlock(void);
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144
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145 typedef struct
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146 {
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147 cyg_atomic lock;
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148 } cyg_drv_mutex_t;
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149
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150 externC void cyg_drv_mutex_init( cyg_drv_mutex_t *mutex );
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151 externC void cyg_drv_mutex_destroy( cyg_drv_mutex_t *mutex );
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152 externC cyg_bool_t cyg_drv_mutex_lock( cyg_drv_mutex_t *mutex );
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153 externC cyg_bool_t cyg_drv_mutex_trylock( cyg_drv_mutex_t *mutex );
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154 externC void cyg_drv_mutex_unlock( cyg_drv_mutex_t *mutex );
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155 externC void cyg_drv_mutex_release( cyg_drv_mutex_t *mutex );
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156
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157 typedef struct
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158 {
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159 cyg_atomic wait;
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160 cyg_drv_mutex_t *mutex;
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161 } cyg_drv_cond_t;
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162
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163 externC void cyg_drv_cond_init( cyg_drv_cond_t *cond, cyg_drv_mutex_t *mutex );
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164 externC void cyg_drv_cond_destroy( cyg_drv_cond_t *cond );
115
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165 externC cyg_bool_t cyg_drv_cond_wait( cyg_drv_cond_t *cond );
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166 externC void cyg_drv_cond_signal( cyg_drv_cond_t *cond );
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167 externC void cyg_drv_cond_broadcast( cyg_drv_cond_t *cond );
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168
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169 typedef struct cyg_interrupt
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170 {
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171 cyg_vector_t vector;
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172 cyg_priority_t priority;
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173 cyg_ISR_t *isr;
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174 cyg_DSR_t *dsr;
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175 CYG_ADDRWORD data;
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176
130
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177 struct cyg_interrupt* volatile next_dsr;
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178 volatile cyg_int32 dsr_count;
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179
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180 #ifdef CYGIMP_HAL_COMMON_INTERRUPTS_CHAIN
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181 struct cyg_interrupt *next;
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182 #endif
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183
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184 } cyg_interrupt;
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185
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186 externC void cyg_drv_interrupt_create(
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187 cyg_vector_t vector,
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188 cyg_priority_t priority,
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189 cyg_addrword_t data,
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190 cyg_ISR_t *isr,
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191 cyg_DSR_t *dsr,
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192 cyg_handle_t *handle,
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193 cyg_interrupt *intr
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194 );
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195 externC void cyg_drv_interrupt_delete( cyg_handle_t interrupt );
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196 externC void cyg_drv_interrupt_attach( cyg_handle_t interrupt );
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197 externC void cyg_drv_interrupt_detach( cyg_handle_t interrupt );
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198
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199 externC void cyg_drv_interrupt_mask( cyg_vector_t vector );
208
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200 externC void cyg_drv_interrupt_mask_intunsafe( cyg_vector_t vector );
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201 externC void cyg_drv_interrupt_unmask( cyg_vector_t vector );
208
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202 externC void cyg_drv_interrupt_unmask_intunsafe( cyg_vector_t vector );
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203 externC void cyg_drv_interrupt_acknowledge( cyg_vector_t vector );
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204 externC void cyg_drv_interrupt_configure(
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205 cyg_vector_t vector,
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206 cyg_bool_t level,
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207 cyg_bool_t up
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208 );
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209 externC void cyg_drv_interrupt_level( cyg_vector_t vector, cyg_priority_t level );
177
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210 externC void cyg_drv_interrupt_set_cpu( cyg_vector_t vector, cyg_cpu_t cpu );
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211 externC cyg_cpu_t cyg_drv_interrupt_get_cpu( cyg_vector_t vector );
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212
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213
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214 enum cyg_ISR_results
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215 {
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216 CYG_ISR_HANDLED = 1, /* Interrupt was handled */
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217 CYG_ISR_CALL_DSR = 2 /* Schedule DSR */
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218 };
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219
177
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220
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221 typedef struct
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222 {
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223 cyg_atomic lock;
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224 } cyg_drv_spinlock_t;
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225
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226 void cyg_drv_spinlock_init(
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227 cyg_drv_spinlock_t *lock, /* spinlock to initialize */
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228 cyg_bool_t locked /* init locked or unlocked */
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229 );
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230
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231 void cyg_drv_spinlock_destroy( cyg_drv_spinlock_t *lock );
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232
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233 void cyg_drv_spinlock_spin( cyg_drv_spinlock_t *lock );
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234
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235 void cyg_drv_spinlock_clear( cyg_drv_spinlock_t *lock );
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236
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237 cyg_bool_t cyg_drv_spinlock_try( cyg_drv_spinlock_t *lock );
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238
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239 cyg_bool_t cyg_drv_spinlock_test( cyg_drv_spinlock_t *lock );
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240
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241 void cyg_drv_spinlock_spin_intsave( cyg_drv_spinlock_t *lock,
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242 cyg_addrword_t *istate );
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243
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244 void cyg_drv_spinlock_clear_intsave( cyg_drv_spinlock_t *lock,
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245 cyg_addrword_t istate );
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246
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247 #endif /* CYGPKG_KERNEL */
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248
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249 /*------------------------------------------------------------------------*/
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250 /* EOF drv_api.h */
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251 #endif // CYGONCE_HAL_DRV_API_H