1 | /*===============================================================*\ |
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2 | | Project: RTEMS PC386 IDE harddisc driver | |
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3 | +-----------------------------------------------------------------+ |
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4 | | File: ide.c | |
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5 | +-----------------------------------------------------------------+ |
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6 | | Copyright (c) 2003 IMD | |
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7 | | Ingenieurbuero fuer Microcomputertechnik Th. Doerfler | |
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8 | | <Thomas.Doerfler@imd-systems.de> | |
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9 | | all rights reserved | |
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10 | +-----------------------------------------------------------------+ |
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11 | | this file contains the BSP layer for IDE access below the | |
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12 | | libchip IDE harddisc driver | |
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13 | | based on a board specific driver from | |
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14 | | Eugeny S. Mints, Oktet | |
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15 | | | |
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16 | | The license and distribution terms for this file may be | |
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17 | | found in the file LICENSE in this distribution or at | |
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18 | | http://www.rtems.com/license/LICENSE. | |
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19 | | | |
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20 | +-----------------------------------------------------------------+ |
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21 | | date history ID | |
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22 | | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
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23 | | 01.14.03 creation doe | |
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24 | \*===============================================================*/ |
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25 | |
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26 | #include <rtems.h> |
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27 | #include <bsp.h> |
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28 | #include <libchip/ide_ctrl.h> |
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29 | #include <libchip/ide_ctrl_cfg.h> |
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30 | #include <libchip/ide_ctrl_io.h> |
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31 | |
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32 | #define ATA_SECTOR_SIZE (512) |
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33 | |
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34 | /* |
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35 | * Use during initialisation. |
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36 | */ |
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37 | extern void Wait_X_ms(unsigned int msecs); |
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38 | |
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39 | bool pc386_ide_show; |
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40 | uint32_t pc386_ide_timeout; |
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41 | |
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42 | #define PC386_IDE_DEBUG_OUT 0 |
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43 | |
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44 | #if PC386_IDE_DEBUG_OUT |
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45 | bool pc386_ide_trace; |
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46 | #define pc386_ide_printk if (pc386_ide_trace) printk |
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47 | #endif |
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48 | |
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49 | #define PC386_IDE_PROBE_TIMEOUT (500) |
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50 | #define PC386_IDE_PRESTART_TIMEOUT (1000) |
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51 | #define PC386_IDE_TASKING_TIMEOUT (2000) |
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52 | |
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53 | /* |
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54 | * Prestart sleep using a calibrated timing loop. |
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55 | */ |
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56 | static void pc386_ide_prestart_sleep (void) |
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57 | { |
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58 | Wait_X_ms (10); |
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59 | } |
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60 | |
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61 | /* |
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62 | * Once tasking has started we use a task sleep. |
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63 | */ |
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64 | static void pc386_ide_tasking_sleep (void) |
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65 | { |
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66 | rtems_task_wake_after (TOD_MICROSECONDS_TO_TICKS (10000) ? |
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67 | TOD_MICROSECONDS_TO_TICKS (10000) : 1); |
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68 | } |
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69 | |
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70 | typedef void (*pc386_ide_sleeper)(void); |
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71 | |
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72 | static void pc386_ide_sleep (pc386_ide_sleeper sleeper) |
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73 | { |
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74 | sleeper (); |
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75 | } |
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76 | |
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77 | static void wait(volatile uint32_t loops) |
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78 | { |
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79 | while (loops) |
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80 | loops--; |
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81 | } |
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82 | |
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83 | static bool pc386_ide_status_busy (uint32_t port, |
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84 | volatile uint32_t timeout, |
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85 | uint8_t* status_val, |
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86 | pc386_ide_sleeper sleeper) |
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87 | { |
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88 | volatile uint8_t status; |
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89 | int polls; |
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90 | |
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91 | do |
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92 | { |
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93 | polls = 500; |
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94 | while (polls) |
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95 | { |
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96 | inport_byte (port + IDE_REGISTER_STATUS, status); |
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97 | if ((status & IDE_REGISTER_STATUS_BSY) == 0) |
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98 | { |
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99 | *status_val = status; |
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100 | return true; |
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101 | } |
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102 | polls--; |
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103 | } |
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104 | |
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105 | if (timeout) |
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106 | { |
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107 | timeout--; |
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108 | pc386_ide_sleep (sleeper); |
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109 | } |
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110 | } |
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111 | while (timeout); |
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112 | |
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113 | *status_val = status; |
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114 | return false; |
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115 | } |
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116 | |
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117 | static bool pc386_ide_status_data_ready (uint32_t port, |
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118 | volatile uint32_t timeout, |
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119 | uint8_t* status_val, |
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120 | pc386_ide_sleeper sleeper) |
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121 | { |
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122 | volatile uint8_t status; |
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123 | int polls; |
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124 | |
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125 | do |
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126 | { |
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127 | polls = 1000; |
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128 | while (polls) |
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129 | { |
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130 | inport_byte (port + IDE_REGISTER_STATUS, status); |
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131 | |
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132 | if (((status & IDE_REGISTER_STATUS_BSY) == 0) && |
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133 | (status & IDE_REGISTER_STATUS_DRQ)) |
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134 | { |
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135 | *status_val = status; |
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136 | return true; |
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137 | } |
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138 | |
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139 | polls--; |
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140 | } |
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141 | |
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142 | if (timeout) |
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143 | { |
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144 | timeout--; |
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145 | pc386_ide_sleep (sleeper); |
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146 | } |
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147 | } |
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148 | while (timeout); |
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149 | |
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150 | *status_val = status; |
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151 | return false; |
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152 | } |
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153 | |
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154 | /* |
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155 | * support functions for IDE harddisk IF |
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156 | */ |
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157 | /*=========================================================================*\ |
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158 | | Function: | |
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159 | \*-------------------------------------------------------------------------*/ |
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160 | static bool pc386_ide_probe |
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161 | ( |
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162 | /*-------------------------------------------------------------------------*\ |
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163 | | Purpose: | |
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164 | | This function should probe, whether a IDE disk is available | |
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165 | +---------------------------------------------------------------------------+ |
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166 | | Input Parameters: | |
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167 | \*-------------------------------------------------------------------------*/ |
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168 | int minor |
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169 | ) |
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170 | /*-------------------------------------------------------------------------*\ |
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171 | | Return Value: | |
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172 | | true, when flash disk available | |
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173 | \*=========================================================================*/ |
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174 | { |
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175 | bool ide_card_plugged = true; /* assume: we have a disk here */ |
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176 | |
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177 | return ide_card_plugged; |
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178 | } |
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179 | |
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180 | /*=========================================================================*\ |
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181 | | Function: | |
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182 | \*-------------------------------------------------------------------------*/ |
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183 | static void pc386_ide_initialize |
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184 | ( |
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185 | /*-------------------------------------------------------------------------*\ |
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186 | | Purpose: | |
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187 | | initialize IDE access | |
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188 | +---------------------------------------------------------------------------+ |
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189 | | Input Parameters: | |
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190 | \*-------------------------------------------------------------------------*/ |
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191 | int minor /* controller minor number */ |
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192 | ) |
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193 | /*-------------------------------------------------------------------------*\ |
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194 | | Return Value: | |
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195 | | <none> | |
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196 | \*=========================================================================*/ |
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197 | { |
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198 | uint32_t port = IDE_Controller_Table[minor].port1; |
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199 | uint8_t dev = 0; |
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200 | |
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201 | if (pc386_ide_show) |
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202 | printk("IDE%d: port base: %04x\n", minor, port); |
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203 | |
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204 | outport_byte(port+IDE_REGISTER_DEVICE_HEAD, |
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205 | (dev << IDE_REGISTER_DEVICE_HEAD_DEV_POS) | 0xE0); |
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206 | wait(10000); |
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207 | outport_byte(port+IDE_REGISTER_DEVICE_CONTROL, |
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208 | IDE_REGISTER_DEVICE_CONTROL_SRST | IDE_REGISTER_DEVICE_CONTROL_nIEN); |
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209 | wait(10000); |
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210 | outport_byte(port+IDE_REGISTER_DEVICE_CONTROL, |
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211 | IDE_REGISTER_DEVICE_CONTROL_nIEN); |
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212 | wait(10000); |
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213 | |
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214 | for (dev = 0; dev < 2; dev++) |
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215 | { |
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216 | uint16_t capabilities = 0; |
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217 | uint32_t byte; |
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218 | uint8_t status; |
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219 | uint8_t error; |
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220 | uint8_t cyllsb; |
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221 | uint8_t cylmsb; |
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222 | const char* label = dev ? " slave" : "master"; |
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223 | int max_multiple_sectors = 0; |
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224 | int cur_multiple_sectors = 0; |
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225 | uint32_t cylinders = 0; |
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226 | uint32_t heads = 0; |
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227 | uint32_t sectors = 0; |
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228 | uint32_t lba_sectors = 0; |
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229 | char model_number[41]; |
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230 | char* p = &model_number[0]; |
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231 | bool data_ready; |
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232 | |
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233 | memset(model_number, 0, sizeof(model_number)); |
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234 | |
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235 | outport_byte(port+IDE_REGISTER_DEVICE_HEAD, |
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236 | (dev << IDE_REGISTER_DEVICE_HEAD_DEV_POS) | 0xE0); |
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237 | /* |
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238 | outport_byte(port+IDE_REGISTER_SECTOR_NUMBER, |
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239 | (dev << IDE_REGISTER_DEVICE_HEAD_DEV_POS) | IDE_REGISTER_LBA3_L); |
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240 | */ |
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241 | |
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242 | outport_byte(port+IDE_REGISTER_COMMAND, 0x00); |
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243 | |
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244 | if (!pc386_ide_status_busy (port, PC386_IDE_PROBE_TIMEOUT, |
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245 | &status, pc386_ide_prestart_sleep)) |
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246 | continue; |
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247 | |
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248 | inport_byte(port+IDE_REGISTER_STATUS, status); |
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249 | inport_byte(port+IDE_REGISTER_ERROR, error); |
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250 | inport_byte(port+IDE_REGISTER_CYLINDER_LOW, cyllsb); |
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251 | inport_byte(port+IDE_REGISTER_CYLINDER_HIGH, cylmsb); |
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252 | |
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253 | if (pc386_ide_show) |
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254 | { |
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255 | printk("IDE%d:%s: status=%02x\n", minor, label, status); |
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256 | printk("IDE%d:%s: error=%02x\n", minor, label, error); |
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257 | printk("IDE%d:%s: cylinder-low=%02x\n", minor, label, cyllsb); |
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258 | printk("IDE%d:%s: cylinder-high=%02x\n", minor, label, cylmsb); |
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259 | } |
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260 | |
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261 | outport_byte(port+IDE_REGISTER_COMMAND, 0xec); |
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262 | |
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263 | if (!pc386_ide_status_busy (port, PC386_IDE_PRESTART_TIMEOUT, |
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264 | &status, pc386_ide_prestart_sleep)) |
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265 | { |
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266 | if (pc386_ide_show) |
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267 | printk("IDE%d:%s: device busy: %02x\n", minor, label, status); |
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268 | continue; |
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269 | } |
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270 | |
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271 | data_ready = pc386_ide_status_data_ready (port, |
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272 | 250, |
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273 | &status, |
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274 | pc386_ide_prestart_sleep); |
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275 | |
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276 | if (status & IDE_REGISTER_STATUS_ERR) |
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277 | { |
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278 | inport_byte(port+IDE_REGISTER_ERROR, error); |
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279 | if (error != 4) |
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280 | { |
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281 | if (pc386_ide_show) |
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282 | printk("IDE%d:%s: error=%04x\n", minor, label, error); |
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283 | continue; |
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284 | } |
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285 | /* |
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286 | * The device is an ATAPI device. |
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287 | */ |
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288 | outport_byte(port+IDE_REGISTER_COMMAND, 0xa1); |
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289 | data_ready = pc386_ide_status_data_ready (port, |
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290 | 250, |
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291 | &status, |
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292 | pc386_ide_prestart_sleep); |
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293 | } |
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294 | |
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295 | if (!data_ready) |
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296 | continue; |
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297 | |
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298 | byte = 0; |
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299 | while (byte < 512) |
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300 | { |
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301 | uint16_t word; |
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302 | |
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303 | if (pc386_ide_show && ((byte % 16) == 0)) |
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304 | printk("\n %04x : ", byte); |
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305 | |
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306 | inport_word(port+IDE_REGISTER_DATA, word); |
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307 | |
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308 | if (pc386_ide_show) |
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309 | printk ("%04x ", word); |
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310 | |
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311 | if (byte == 2) |
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312 | cylinders = word; |
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313 | if (byte == 6) |
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314 | heads = word; |
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315 | if (byte == 12) |
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316 | sectors = word; |
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317 | |
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318 | if (byte >= 54 && byte < (54 + 40)) |
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319 | { |
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320 | *p = word >> 8; |
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321 | p++; |
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322 | *p = word; |
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323 | p++; |
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324 | } |
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325 | |
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326 | if (byte == (47 * 2)) |
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327 | max_multiple_sectors = word & 0xff; |
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328 | |
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329 | if (byte == (49 * 2)) |
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330 | capabilities = word; |
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331 | |
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332 | if (byte == (59 * 2)) |
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333 | { |
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334 | if (word & (1 << 8)) |
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335 | cur_multiple_sectors = word & 0xff; |
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336 | } |
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337 | |
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338 | if (byte == (60 * 2)) |
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339 | lba_sectors = word; |
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340 | if (byte == (61 * 2)) |
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341 | lba_sectors |= word << 16; |
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342 | |
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343 | byte += 2; |
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344 | } |
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345 | |
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346 | if (pc386_ide_show) |
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347 | printk("\nbytes read = %d\n", byte); |
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348 | |
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349 | if (p != &model_number[0]) |
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350 | { |
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351 | uint32_t size; |
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352 | uint32_t left; |
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353 | uint32_t right; |
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354 | char units; |
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355 | |
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356 | if (capabilities & (1 << 9)) |
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357 | size = lba_sectors; |
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358 | else |
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359 | size = cylinders * heads * sectors; |
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360 | |
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361 | size /= 2; |
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362 | |
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363 | if (size > (1024 * 1024)) |
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364 | { |
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365 | size = (size * 10) / (1000 * 1000); |
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366 | units = 'G'; |
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367 | } |
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368 | else if (size > 1024) |
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369 | { |
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370 | size = (size * 10) / 1000; |
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371 | units = 'M'; |
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372 | } |
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373 | else |
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374 | { |
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375 | size = size * 10; |
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376 | units = 'K'; |
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377 | } |
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378 | |
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379 | left = size / 10; |
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380 | right = size % 10; |
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381 | |
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382 | p--; |
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383 | while (*p == ' ') |
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384 | { |
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385 | *p = '\0'; |
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386 | p--; |
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387 | } |
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388 | |
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389 | printk("IDE%d:%s:%s, %u.%u%c (%u/%u/%u), max blk size:%d\n", |
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390 | minor, label, model_number, left, right, units, |
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391 | heads, cylinders, sectors, max_multiple_sectors * 512); |
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392 | } |
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393 | |
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394 | #if IDE_CLEAR_MULTI_SECTOR_COUNT |
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395 | if (max_multiple_sectors) |
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396 | { |
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397 | outport_byte(port+IDE_REGISTER_SECTOR_COUNT, 0); |
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398 | outport_byte(port+IDE_REGISTER_COMMAND, 0xc6); |
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399 | |
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400 | if (!pc386_ide_status_busy (port, PC386_IDE_PRESTART_TIMEOUT, |
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401 | &status, pc386_ide_prestart_sleep)) |
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402 | { |
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403 | if (pc386_ide_show) |
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404 | printk("IDE%d:%s: device busy: %02x\n", minor, label, status); |
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405 | continue; |
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406 | } |
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407 | |
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408 | inport_byte(port+IDE_REGISTER_STATUS, status); |
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409 | if (status & IDE_REGISTER_STATUS_ERR) |
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410 | { |
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411 | inport_byte(port+IDE_REGISTER_ERROR, error); |
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412 | if (error & IDE_REGISTER_ERROR_ABRT) |
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413 | printk("IDE%d:%s: disable multiple failed\n", minor, label); |
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414 | else |
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415 | printk("IDE%d:%s: unknown error on disable multiple: %02x\n", |
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416 | minor, label, error); |
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417 | } |
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418 | } |
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419 | #endif |
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420 | |
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421 | outport_byte(port+IDE_REGISTER_DEVICE_CONTROL, |
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422 | IDE_REGISTER_DEVICE_CONTROL_nIEN); |
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423 | wait(10000); |
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424 | } |
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425 | |
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426 | pc386_ide_timeout = PC386_IDE_TASKING_TIMEOUT; |
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427 | |
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428 | /* |
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429 | * FIXME: enable interrupts, if needed |
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430 | */ |
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431 | } |
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432 | |
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433 | /*=========================================================================*\ |
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434 | | Function: | |
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435 | \*-------------------------------------------------------------------------*/ |
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436 | static void pc386_ide_read_reg |
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437 | ( |
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438 | /*-------------------------------------------------------------------------*\ |
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439 | | Purpose: | |
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440 | | read a IDE controller register | |
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441 | +---------------------------------------------------------------------------+ |
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442 | | Input Parameters: | |
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443 | \*-------------------------------------------------------------------------*/ |
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444 | int minor, /* controller minor number */ |
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445 | int reg, /* register index to access */ |
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446 | uint16_t *value /* ptr to return value location */ |
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447 | ) |
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448 | /*-------------------------------------------------------------------------*\ |
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449 | | Return Value: | |
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450 | | <none> | |
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451 | \*=========================================================================*/ |
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452 | { |
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453 | uint32_t port = IDE_Controller_Table[minor].port1; |
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454 | uint8_t bval1,bval2; |
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455 | |
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456 | if (reg == IDE_REGISTER_DATA_WORD) { |
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457 | inport_byte(port+reg, bval1); |
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458 | inport_byte(port+reg+1, bval2); |
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459 | *value = bval1 + (bval2 << 8); |
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460 | } |
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461 | else { |
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462 | inport_byte(port+reg, bval1); |
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463 | *value = bval1; |
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464 | } |
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465 | #if PC386_IDE_DEBUG_OUT |
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466 | pc386_ide_printk("pc386_ide_read_reg (0x%x)=0x%x\r\n",reg,*value & 0xff); |
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467 | #endif |
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468 | } |
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469 | |
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470 | /*=========================================================================*\ |
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471 | | Function: | |
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472 | \*-------------------------------------------------------------------------*/ |
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473 | static void pc386_ide_write_reg |
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474 | ( |
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475 | /*-------------------------------------------------------------------------*\ |
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476 | | Purpose: | |
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477 | | write a IDE controller register | |
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478 | +---------------------------------------------------------------------------+ |
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479 | | Input Parameters: | |
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480 | \*-------------------------------------------------------------------------*/ |
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481 | int minor, /* controller minor number */ |
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482 | int reg, /* register index to access */ |
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483 | uint16_t value /* value to write */ |
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484 | ) |
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485 | /*-------------------------------------------------------------------------*\ |
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486 | | Return Value: | |
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487 | | <none> | |
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488 | \*=========================================================================*/ |
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489 | { |
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490 | uint32_t port = IDE_Controller_Table[minor].port1; |
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491 | |
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492 | #if PC386_IDE_DEBUG_OUT |
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493 | pc386_ide_printk("pc386_ide_write_reg(0x%x,0x%x)\r\n",reg,value & 0xff); |
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494 | #endif |
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495 | if (reg == IDE_REGISTER_DATA_WORD) { |
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496 | outport_word(port+reg,value); |
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497 | } |
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498 | else { |
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499 | outport_byte(port+reg,value); |
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500 | } |
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501 | } |
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502 | |
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503 | /*=========================================================================*\ |
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504 | | Function: | |
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505 | \*-------------------------------------------------------------------------*/ |
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506 | static void pc386_ide_read_block |
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507 | ( |
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508 | /*-------------------------------------------------------------------------*\ |
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509 | | Purpose: | |
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510 | | read a IDE controller data block | |
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511 | +---------------------------------------------------------------------------+ |
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512 | | Input Parameters: | |
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513 | \*-------------------------------------------------------------------------*/ |
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514 | int minor, |
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515 | uint32_t block_size, |
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516 | rtems_blkdev_sg_buffer *bufs, |
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517 | uint32_t *cbuf, |
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518 | uint32_t *pos |
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519 | ) |
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520 | /*-------------------------------------------------------------------------*\ |
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521 | | Return Value: | |
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522 | | <none> | |
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523 | \*=========================================================================*/ |
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524 | { |
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525 | uint32_t port = IDE_Controller_Table[minor].port1; |
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526 | uint32_t cnt = 0; |
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527 | #if PC386_IDE_DEBUG_OUT |
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528 | int i32 = 0; |
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529 | pc386_ide_printk("pc386_ide_read_block(bs=%u,bn=%u,bl=%u,cb=%d,p=%d)\n", |
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530 | block_size, bufs[(*cbuf)].block, llength, *cbuf, *pos); |
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531 | #endif |
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532 | |
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533 | while (cnt < block_size) |
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534 | { |
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535 | uint16_t *lbuf; |
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536 | uint8_t status_val; |
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537 | int b; |
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538 | |
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539 | if (!pc386_ide_status_data_ready (port, pc386_ide_timeout, |
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540 | &status_val, pc386_ide_tasking_sleep)) |
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541 | { |
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542 | printk ("pc386_ide_read_block: block=%u cbuf=%u status=%02x, cnt=%d bs=%d\n", |
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543 | bufs[*cbuf].block, *cbuf, status_val, cnt, block_size); |
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544 | /* FIXME: add an error here. */ |
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545 | return; |
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546 | } |
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547 | |
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548 | if (status_val & IDE_REGISTER_STATUS_ERR) |
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549 | { |
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550 | inport_byte(port+IDE_REGISTER_ERROR, status_val); |
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551 | printk("pc386_ide_read_block: error: %02x\n", status_val); |
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552 | return; |
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553 | } |
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554 | |
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555 | lbuf = (uint16_t*)((uint8_t*)(bufs[(*cbuf)].buffer) + (*pos)); |
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556 | |
---|
557 | for (b = 0; b < (ATA_SECTOR_SIZE / 2); b++) |
---|
558 | { |
---|
559 | inport_word(port+IDE_REGISTER_DATA,*lbuf); |
---|
560 | |
---|
561 | #if PC386_IDE_DEBUG_OUT |
---|
562 | pc386_ide_printk("%04x ",*lbuf); |
---|
563 | i32++; |
---|
564 | if (i32 >= 16) |
---|
565 | { |
---|
566 | pc386_ide_printk("\n"); |
---|
567 | i32 = 0; |
---|
568 | } |
---|
569 | #endif |
---|
570 | lbuf++; |
---|
571 | } |
---|
572 | cnt += ATA_SECTOR_SIZE; |
---|
573 | (*pos) += ATA_SECTOR_SIZE; |
---|
574 | if ((*pos) == bufs[(*cbuf)].length) { |
---|
575 | (*pos) = 0; |
---|
576 | (*cbuf)++; |
---|
577 | lbuf = bufs[(*cbuf)].buffer; |
---|
578 | } |
---|
579 | } |
---|
580 | } |
---|
581 | |
---|
582 | /*=========================================================================*\ |
---|
583 | | Function: | |
---|
584 | \*-------------------------------------------------------------------------*/ |
---|
585 | static void pc386_ide_write_block |
---|
586 | ( |
---|
587 | /*-------------------------------------------------------------------------*\ |
---|
588 | | Purpose: | |
---|
589 | | write a IDE controller data block | |
---|
590 | +---------------------------------------------------------------------------+ |
---|
591 | | Input Parameters: | |
---|
592 | \*-------------------------------------------------------------------------*/ |
---|
593 | int minor, |
---|
594 | uint32_t block_size, |
---|
595 | rtems_blkdev_sg_buffer *bufs, |
---|
596 | uint32_t *cbuf, |
---|
597 | uint32_t *pos |
---|
598 | ) |
---|
599 | /*-------------------------------------------------------------------------*\ |
---|
600 | | Return Value: | |
---|
601 | | <none> | |
---|
602 | \*=========================================================================*/ |
---|
603 | { |
---|
604 | uint32_t port = IDE_Controller_Table[minor].port1; |
---|
605 | uint32_t cnt = 0; |
---|
606 | #if PC386_IDE_DEBUG_OUT |
---|
607 | int i32 = 0; |
---|
608 | pc386_ide_printk("pc386_ide_write_block(bs=%u,bn=%u,bl=%u,cb=%d,p=%d)\n", |
---|
609 | block_size, bufs[(*cbuf)].block, llength, *cbuf, *pos); |
---|
610 | #endif |
---|
611 | |
---|
612 | while (cnt < block_size) |
---|
613 | { |
---|
614 | uint16_t *lbuf; |
---|
615 | uint8_t status_val; |
---|
616 | int b; |
---|
617 | |
---|
618 | if (!pc386_ide_status_data_ready (port, pc386_ide_timeout, |
---|
619 | &status_val, pc386_ide_tasking_sleep)) |
---|
620 | { |
---|
621 | printk ("pc386_ide_write_block: block=%u status=%02x, cnt=%d bs=%d\n", |
---|
622 | bufs[*cbuf].block, status_val, cnt, block_size); |
---|
623 | /* FIXME: add an error here. */ |
---|
624 | return; |
---|
625 | } |
---|
626 | |
---|
627 | if (status_val & IDE_REGISTER_STATUS_ERR) |
---|
628 | { |
---|
629 | inport_byte(port+IDE_REGISTER_ERROR, status_val); |
---|
630 | printk ("pc386_ide_write_block: error: %02x\n", status_val); |
---|
631 | return; |
---|
632 | } |
---|
633 | |
---|
634 | lbuf = (uint16_t*)(((uint8_t*)bufs[*cbuf].buffer) + (*pos)); |
---|
635 | |
---|
636 | for (b = 0; b < (ATA_SECTOR_SIZE / 2); b++) |
---|
637 | { |
---|
638 | #if PC386_IDE_DEBUG_OUT |
---|
639 | pc386_ide_printk("%04x ",*lbuf); |
---|
640 | i32++; |
---|
641 | if (i32 >= 16) |
---|
642 | { |
---|
643 | pc386_ide_printk("\n"); |
---|
644 | i32 = 0; |
---|
645 | } |
---|
646 | #endif |
---|
647 | outport_word(port+IDE_REGISTER_DATA,*lbuf); |
---|
648 | lbuf++; |
---|
649 | } |
---|
650 | cnt += ATA_SECTOR_SIZE; |
---|
651 | (*pos) += ATA_SECTOR_SIZE; |
---|
652 | if ((*pos) == bufs[(*cbuf)].length) { |
---|
653 | (*pos) = 0; |
---|
654 | (*cbuf)++; |
---|
655 | lbuf = bufs[(*cbuf)].buffer; |
---|
656 | } |
---|
657 | } |
---|
658 | } |
---|
659 | |
---|
660 | /*=========================================================================*\ |
---|
661 | | Function: | |
---|
662 | \*-------------------------------------------------------------------------*/ |
---|
663 | static int pc386_ide_control |
---|
664 | ( |
---|
665 | /*-------------------------------------------------------------------------*\ |
---|
666 | | Purpose: | |
---|
667 | | control interface for controller | |
---|
668 | +---------------------------------------------------------------------------+ |
---|
669 | | Input Parameters: | |
---|
670 | \*-------------------------------------------------------------------------*/ |
---|
671 | int minor, /* controller minor number */ |
---|
672 | uint32_t cmd, /* command to send */ |
---|
673 | void * arg /* optional argument */ |
---|
674 | ) |
---|
675 | /*-------------------------------------------------------------------------*\ |
---|
676 | | Return Value: | |
---|
677 | | <none> | |
---|
678 | \*=========================================================================*/ |
---|
679 | { |
---|
680 | return 0; |
---|
681 | } |
---|
682 | |
---|
683 | /*=========================================================================*\ |
---|
684 | | Function: | |
---|
685 | \*-------------------------------------------------------------------------*/ |
---|
686 | static rtems_status_code pc386_ide_config_io_speed |
---|
687 | ( |
---|
688 | /*-------------------------------------------------------------------------*\ |
---|
689 | | Purpose: | |
---|
690 | | set up transfer speed, if possible | |
---|
691 | +---------------------------------------------------------------------------+ |
---|
692 | | Input Parameters: | |
---|
693 | \*-------------------------------------------------------------------------*/ |
---|
694 | int minor, /* controller minor number */ |
---|
695 | uint16_t modes_avail /* optional argument */ |
---|
696 | ) |
---|
697 | /*-------------------------------------------------------------------------*\ |
---|
698 | | Return Value: | |
---|
699 | | rtems_status_code | |
---|
700 | \*=========================================================================*/ |
---|
701 | { |
---|
702 | return RTEMS_SUCCESSFUL; |
---|
703 | } |
---|
704 | |
---|
705 | /* |
---|
706 | * The following table configures the functions used for IDE drivers |
---|
707 | * in this BSP. |
---|
708 | */ |
---|
709 | |
---|
710 | ide_ctrl_fns_t pc386_ide_ctrl_fns = { |
---|
711 | pc386_ide_probe, |
---|
712 | pc386_ide_initialize, |
---|
713 | pc386_ide_control, |
---|
714 | pc386_ide_read_reg, |
---|
715 | pc386_ide_write_reg, |
---|
716 | pc386_ide_read_block, |
---|
717 | pc386_ide_write_block, |
---|
718 | pc386_ide_config_io_speed |
---|
719 | }; |
---|