1 | /* |
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2 | * ide_controller.c |
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3 | * |
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4 | * This is generic rtems driver for IDE controllers. |
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5 | * |
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6 | * Copyright (C) 2001 OKTET Ltd., St.-Petersburg, Russia |
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7 | * Authors: Alexandra Kossovsky <sasha@oktet.ru> |
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8 | * Eugeny S. Mints <Eugeny.Mints@oktet.ru> |
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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 | #include <chain.h> |
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18 | #include <assert.h> |
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19 | #include <rtems/blkdev.h> |
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20 | |
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21 | #include <libchip/ide_ctrl_cfg.h> |
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22 | #include <libchip/ide_ctrl_io.h> |
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23 | |
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24 | /* |
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25 | * ide_controller_initialize -- |
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26 | * Initializes all configured IDE controllers. Controllers configuration |
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27 | * table is provided by BSP |
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28 | * |
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29 | * PARAMETERS: |
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30 | * major - device major number |
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31 | * minor_arg - device minor number |
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32 | * args - arguments |
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33 | * |
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34 | * RETURNS: |
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35 | * RTEMS_SUCCESSFUL on success, or error code if |
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36 | * error occured |
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37 | */ |
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38 | rtems_device_driver |
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39 | ide_controller_initialize(rtems_device_major_number major, |
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40 | rtems_device_minor_number minor_arg, |
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41 | void *args) |
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42 | { |
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43 | unsigned long minor; |
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44 | rtems_status_code status; |
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45 | |
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46 | /* FIXME: may be it should be done on compilation phase */ |
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47 | if (IDE_Controller_Count > IDE_CTRL_MAX_MINOR_NUMBER) |
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48 | rtems_fatal_error_occurred(RTEMS_TOO_MANY); |
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49 | |
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50 | for (minor=0; minor < IDE_Controller_Count; minor++) |
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51 | { |
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52 | IDE_Controller_Table[minor].status = IDE_CTRL_NON_INITIALIZED; |
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53 | |
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54 | if ((IDE_Controller_Table[minor].probe != NULL && |
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55 | IDE_Controller_Table[minor].probe(minor)) || |
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56 | IDE_Controller_Table[minor].fns->ctrl_probe(minor)) |
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57 | { |
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58 | status = rtems_io_register_name(IDE_Controller_Table[minor].name, |
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59 | major, minor); |
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60 | if (status != RTEMS_SUCCESSFUL) |
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61 | rtems_fatal_error_occurred(status); |
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62 | |
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63 | IDE_Controller_Table[minor].fns->ctrl_initialize(minor); |
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64 | |
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65 | IDE_Controller_Table[minor].status = IDE_CTRL_INITIALIZED; |
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66 | } |
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67 | } |
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68 | return RTEMS_SUCCESSFUL; |
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69 | } |
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70 | |
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71 | /* |
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72 | * ide_controller_read_data_block -- |
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73 | * Read data block via controller's data register |
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74 | * |
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75 | * PARAMETERS: |
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76 | * minor - minor number of controller |
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77 | * block_size - number of bytes to read |
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78 | * bufs - set of buffers to store data |
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79 | * cbuf - number of current buffer from the set |
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80 | * pos - position inside current buffer 'cbuf' |
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81 | * |
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82 | * RETURNS: |
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83 | * NONE |
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84 | */ |
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85 | void |
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86 | ide_controller_read_data_block(rtems_device_minor_number minor, |
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87 | unsigned16 block_size, |
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88 | blkdev_sg_buffer *bufs, |
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89 | rtems_unsigned32 *cbuf, |
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90 | rtems_unsigned32 *pos) |
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91 | { |
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92 | IDE_Controller_Table[minor].fns->ctrl_read_block(minor, block_size, bufs, |
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93 | cbuf, pos); |
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94 | } |
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95 | |
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96 | /* |
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97 | * ide_controller_write_data_block -- |
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98 | * Write data block via controller's data register |
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99 | * |
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100 | * PARAMETERS: |
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101 | * minor - minor number of controller |
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102 | * block_size - number of bytes to write |
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103 | * bufs - set of buffers which store data |
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104 | * cbuf - number of current buffer from the set |
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105 | * pos - position inside current buffer 'cbuf' |
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106 | * |
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107 | * RETURNS: |
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108 | * NONE |
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109 | */ |
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110 | void |
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111 | ide_controller_write_data_block(rtems_device_minor_number minor, |
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112 | unsigned16 block_size, |
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113 | blkdev_sg_buffer *bufs, |
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114 | rtems_unsigned32 *cbuf, |
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115 | rtems_unsigned32 *pos) |
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116 | |
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117 | { |
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118 | IDE_Controller_Table[minor].fns->ctrl_write_block(minor, block_size, bufs, |
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119 | cbuf, pos); |
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120 | } |
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121 | |
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122 | /* |
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123 | * ide_controller_read_register -- |
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124 | * Read controller's register |
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125 | * |
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126 | * PARAMETERS: |
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127 | * minor - minor number of controller |
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128 | * reg - register to read |
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129 | * value - placeholder for result |
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130 | * |
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131 | * RETURNS |
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132 | * NONE |
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133 | */ |
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134 | void |
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135 | ide_controller_read_register(rtems_device_minor_number minor, |
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136 | int reg, |
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137 | unsigned16 *value) |
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138 | { |
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139 | IDE_Controller_Table[minor].fns->ctrl_reg_read(minor, reg, value); |
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140 | } |
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141 | |
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142 | /* |
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143 | * ide_controller_write_register -- |
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144 | * Write controller's register |
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145 | * |
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146 | * PARAMETERS: |
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147 | * minor - minor number of controller |
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148 | * reg - register to write |
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149 | * value - value to write |
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150 | * |
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151 | * RETURNS: |
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152 | * NONE |
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153 | */ |
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154 | void |
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155 | ide_controller_write_register(rtems_device_minor_number minor, int reg, |
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156 | unsigned16 value) |
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157 | { |
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158 | IDE_Controller_Table[minor].fns->ctrl_reg_write(minor, reg, value); |
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159 | } |
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160 | |
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161 | /* |
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162 | * ide_controller_config_io_speed -- |
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163 | * Set controller's speed of IO operations |
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164 | * |
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165 | * PARAMETERS: |
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166 | * minor - minor number of controller |
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167 | * modes_avaible - speeds available |
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168 | * |
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169 | * RETURNS: |
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170 | * RTEMS_SUCCESSFUL on success, or error code if |
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171 | * error occured |
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172 | */ |
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173 | rtems_status_code |
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174 | ide_controller_config_io_speed(int minor, unsigned8 modes_avaible) |
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175 | { |
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176 | return IDE_Controller_Table[minor].fns->ctrl_config_io_speed( |
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177 | minor, |
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178 | modes_avaible); |
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179 | } |
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