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annotate packages/hal/v85x/v850/current/src/v850_misc.c @ 101:c37d3a9e1b28 ecos-sw-2000-06-16

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Merge from eCos master repository on 2000-06-16-07:47:03-BST
author jlarmour
date Fri, 16 Jun 2000 16:43:59 +0000
parents b15c60e34c84
children b939e9cada46
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1 //==========================================================================
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2 //
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3 // v850_misc.c
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4 //
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5 // HAL CPU variant miscellaneous functions
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //==========================================================================
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32 //#####DESCRIPTIONBEGIN####
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33 //
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34 // Author(s): gthomas
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35 // Contributors: gthomas
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36 // Date: 2000-03-15
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37 // Purpose: HAL miscellaneous functions
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38 // Description: This file contains miscellaneous functions provided by the
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39 // HAL.
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40 //
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41 //####DESCRIPTIONEND####
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42 //
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43 //========================================================================*/
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44
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45 #include <pkgconf/hal.h>
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46
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47 #include <cyg/infra/cyg_type.h> // Base types
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48 #include <cyg/infra/cyg_trac.h> // tracing macros
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49 #include <cyg/infra/cyg_ass.h> // assertion macros
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50
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51 #include <cyg/hal/hal_intr.h>
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52 #include <cyg/hal/v850_common.h>
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53
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54 externC void cyg_hal_platform_hardware_init(void);
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55
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56 //
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57 // Interrupt management functions
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58 //
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59
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60 static volatile unsigned char *interrupt_control_registers[] = {
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61 CYG_HAL_V85X_INTERRUPT_CONTROL_REGISTERS // Defined in <plf_intr.h>
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62 };
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63
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64 #define INT_CONTROL_PENDING 0x80
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65 #define INT_CONTROL_DISABLE 0x40
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66 #define INT_CONTROL_LEVEL(n) n
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67
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68 #define INT_CONTROL_DEFAULT INT_CONTROL_DISABLE|INT_CONTROL_LEVEL(7)
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69
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70 //
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71 // Mask, i.e. disable, interrupt #vector from occurring
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72 //
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73 void
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74 hal_interrupt_mask(int vector)
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75 {
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76 volatile unsigned char *ctl;
101
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77 CYG_ASSERT(vector >= CYGNUM_HAL_ISR_MIN, "invalid interrupt vector [< MIN]");
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78 CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX, "invalid interrupt vector [> MAX]");
96
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79 ctl = interrupt_control_registers[vector-CYGNUM_HAL_ISR_MIN];
101
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80 CYG_ASSERT((void *)ctl != 0, "invalid interrupt vector [not defined]");
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81 if (ctl ) {
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82 *ctl |= INT_CONTROL_DISABLE;
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83 }
96
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84 }
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85
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86 //
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87 // Unmask, i.e. enable, interrupt #vector
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88 //
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89 void
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90 hal_interrupt_unmask(int vector)
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91 {
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92 volatile unsigned char *ctl;
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93 CYG_ASSERT(vector >= CYGNUM_HAL_ISR_MIN, "invalid interrupt vector [< MIN]");
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94 CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX, "invalid interrupt vector [> MAX]");
96
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95 ctl = interrupt_control_registers[vector-CYGNUM_HAL_ISR_MIN];
101
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96 CYG_ASSERT((void *)ctl != 0, "invalid interrupt vector [not defined]");
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97 if (ctl ) {
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98 *ctl &= ~INT_CONTROL_DISABLE;
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99 }
96
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100 }
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101
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102 //
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103 // Acknowledge, i.e. clear, interrupt #vector
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104 //
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105 void
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106 hal_interrupt_acknowledge(int vector)
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107 {
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108 volatile unsigned char *ctl;
101
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109 CYG_ASSERT(vector >= CYGNUM_HAL_ISR_MIN, "invalid interrupt vector [< MIN]");
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110 CYG_ASSERT(vector <= CYGNUM_HAL_ISR_MAX, "invalid interrupt vector [> MAX]");
96
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111 ctl = interrupt_control_registers[vector-CYGNUM_HAL_ISR_MIN];
101
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112 CYG_ASSERT((void *)ctl != 0, "invalid interrupt vector [not defined]");
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113 if (ctl ) {
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114 *ctl &= ~INT_CONTROL_PENDING;
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115 }
96
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116 }
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117
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118 static void
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119 init_interrupts(void)
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120 {
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121 int i;
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122 volatile unsigned char *ctl;
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123 for (i = CYGNUM_HAL_ISR_MIN; i <= CYGNUM_HAL_ISR_MAX; i++) {
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124 ctl = interrupt_control_registers[i-CYGNUM_HAL_ISR_MIN];
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125 if (ctl) {
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126 *ctl = INT_CONTROL_DEFAULT;
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127 }
96
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128 }
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129 }
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130
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131 //
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132 // Initialize the hardware. This may involve platform specific code.
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133 //
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134 void
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135 cyg_hal_hardware_init(void)
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136 {
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137 init_interrupts();
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138 cyg_hal_platform_hardware_init();
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139 }
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140
b15c60e34c84 Merge from eCos master repository on 2000-06-06-05:24:42-BST
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141 /*------------------------------------------------------------------------*/
b15c60e34c84 Merge from eCos master repository on 2000-06-06-05:24:42-BST
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142 /* End of v850_misc.c */