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1 /* |
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2 * SD Memory Card emulation as defined in the "SD Memory Card Physical |
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3 * layer specification, Version 1.10." |
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4 * |
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5 * Copyright (c) 2006 Andrzej Zaborowski <balrog@zabor.org> |
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6 * Copyright (c) 2007 CodeSourcery |
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7 * |
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8 * Redistribution and use in source and binary forms, with or without |
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9 * modification, are permitted provided that the following conditions |
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10 * are met: |
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11 * |
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12 * 1. Redistributions of source code must retain the above copyright |
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13 * notice, this list of conditions and the following disclaimer. |
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14 * 2. Redistributions in binary form must reproduce the above copyright |
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15 * notice, this list of conditions and the following disclaimer in |
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16 * the documentation and/or other materials provided with the |
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17 * distribution. |
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18 * |
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19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' |
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20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
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21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A |
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22 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR |
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23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
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24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
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25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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26 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY |
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27 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
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29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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30 */ |
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31 |
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32 #include "hw.h" |
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33 #include "block.h" |
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34 #include "sd.h" |
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35 |
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36 //#define DEBUG_SD 1 |
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37 |
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38 #ifdef DEBUG_SD |
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39 #define DPRINTF(fmt, args...) \ |
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40 do { fprintf(stderr, "SD: " fmt , ##args); } while (0) |
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41 #else |
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42 #define DPRINTF(fmt, args...) do {} while(0) |
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43 #endif |
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44 |
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45 typedef enum { |
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46 sd_r0 = 0, /* no response */ |
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47 sd_r1, /* normal response command */ |
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48 sd_r2_i, /* CID register */ |
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49 sd_r2_s, /* CSD register */ |
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50 sd_r3, /* OCR register */ |
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51 sd_r6 = 6, /* Published RCA response */ |
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52 sd_r7, /* Operating voltage */ |
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53 sd_r1b = -1, |
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54 } sd_rsp_type_t; |
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55 |
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56 struct SDState { |
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57 enum { |
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58 sd_inactive, |
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59 sd_card_identification_mode, |
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60 sd_data_transfer_mode, |
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61 } mode; |
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62 enum { |
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63 sd_inactive_state = -1, |
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64 sd_idle_state = 0, |
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65 sd_ready_state, |
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66 sd_identification_state, |
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67 sd_standby_state, |
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68 sd_transfer_state, |
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69 sd_sendingdata_state, |
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70 sd_receivingdata_state, |
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71 sd_programming_state, |
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72 sd_disconnect_state, |
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73 } state; |
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74 uint32_t ocr; |
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75 uint8_t scr[8]; |
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76 uint8_t cid[16]; |
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77 uint8_t csd[16]; |
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78 uint16_t rca; |
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79 uint32_t card_status; |
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80 uint8_t sd_status[64]; |
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81 uint32_t vhs; |
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82 int wp_switch; |
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83 int *wp_groups; |
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84 uint32_t size; |
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85 int blk_len; |
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86 uint32_t erase_start; |
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87 uint32_t erase_end; |
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88 uint8_t pwd[16]; |
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89 int pwd_len; |
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90 int function_group[6]; |
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91 |
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92 int spi; |
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93 int current_cmd; |
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94 int blk_written; |
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95 uint32_t data_start; |
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96 uint32_t data_offset; |
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97 uint8_t data[512]; |
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98 qemu_irq readonly_cb; |
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99 qemu_irq inserted_cb; |
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100 BlockDriverState *bdrv; |
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101 uint8_t *buf; |
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102 |
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103 int enable; |
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104 }; |
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105 |
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106 static void sd_set_status(SDState *sd) |
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107 { |
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108 switch (sd->state) { |
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109 case sd_inactive_state: |
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110 sd->mode = sd_inactive; |
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111 break; |
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112 |
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113 case sd_idle_state: |
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114 case sd_ready_state: |
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115 case sd_identification_state: |
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116 sd->mode = sd_card_identification_mode; |
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117 break; |
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118 |
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119 case sd_standby_state: |
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120 case sd_transfer_state: |
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121 case sd_sendingdata_state: |
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122 case sd_receivingdata_state: |
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123 case sd_programming_state: |
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124 case sd_disconnect_state: |
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125 sd->mode = sd_data_transfer_mode; |
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126 break; |
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127 } |
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128 |
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129 sd->card_status &= ~CURRENT_STATE; |
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130 sd->card_status |= sd->state << 9; |
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131 } |
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132 |
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133 static const sd_cmd_type_t sd_cmd_type[64] = { |
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134 sd_bc, sd_none, sd_bcr, sd_bcr, sd_none, sd_none, sd_none, sd_ac, |
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135 sd_bcr, sd_ac, sd_ac, sd_adtc, sd_ac, sd_ac, sd_none, sd_ac, |
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136 sd_ac, sd_adtc, sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, |
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137 sd_adtc, sd_adtc, sd_adtc, sd_adtc, sd_ac, sd_ac, sd_adtc, sd_none, |
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138 sd_ac, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, |
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139 sd_none, sd_none, sd_bc, sd_none, sd_none, sd_none, sd_none, sd_none, |
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140 sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, |
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141 sd_adtc, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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142 }; |
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143 |
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144 static const sd_cmd_type_t sd_acmd_type[64] = { |
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145 sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_ac, sd_none, |
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146 sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, |
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147 sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_adtc, sd_ac, |
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148 sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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149 sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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150 sd_none, sd_bcr, sd_ac, sd_none, sd_none, sd_none, sd_none, sd_none, |
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151 sd_none, sd_none, sd_none, sd_adtc, sd_none, sd_none, sd_none, sd_none, |
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152 sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, sd_none, |
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153 }; |
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154 |
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155 static const int sd_cmd_class[64] = { |
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156 0, 0, 0, 0, 0, 9, 10, 0, 0, 0, 0, 1, 0, 0, 0, 0, |
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157 2, 2, 2, 2, 3, 3, 3, 3, 4, 4, 4, 4, 6, 6, 6, 6, |
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158 5, 5, 10, 10, 10, 10, 5, 9, 9, 9, 7, 7, 7, 7, 7, 7, |
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159 7, 7, 10, 7, 9, 9, 9, 8, 8, 10, 8, 8, 8, 8, 8, 8, |
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160 }; |
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161 |
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162 static uint8_t sd_crc7(void *message, size_t width) |
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163 { |
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164 int i, bit; |
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165 uint8_t shift_reg = 0x00; |
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166 uint8_t *msg = (uint8_t *) message; |
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167 |
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168 for (i = 0; i < width; i ++, msg ++) |
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169 for (bit = 7; bit >= 0; bit --) { |
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170 shift_reg <<= 1; |
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171 if ((shift_reg >> 7) ^ ((*msg >> bit) & 1)) |
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172 shift_reg ^= 0x89; |
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173 } |
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174 |
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175 return shift_reg; |
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176 } |
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177 |
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178 static uint16_t sd_crc16(void *message, size_t width) |
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179 { |
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180 int i, bit; |
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181 uint16_t shift_reg = 0x0000; |
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182 uint16_t *msg = (uint16_t *) message; |
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183 width <<= 1; |
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184 |
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185 for (i = 0; i < width; i ++, msg ++) |
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186 for (bit = 15; bit >= 0; bit --) { |
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187 shift_reg <<= 1; |
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188 if ((shift_reg >> 15) ^ ((*msg >> bit) & 1)) |
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189 shift_reg ^= 0x1011; |
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190 } |
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191 |
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192 return shift_reg; |
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193 } |
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194 |
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195 static void sd_set_ocr(SDState *sd) |
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196 { |
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197 /* All voltages OK, card power-up OK, Standard Capacity SD Memory Card */ |
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198 sd->ocr = 0x80ffff80; |
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199 } |
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200 |
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201 static void sd_set_scr(SDState *sd) |
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202 { |
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203 sd->scr[0] = 0x00; /* SCR Structure */ |
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204 sd->scr[1] = 0x2f; /* SD Security Support */ |
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205 sd->scr[2] = 0x00; |
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206 sd->scr[3] = 0x00; |
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207 sd->scr[4] = 0x00; |
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208 sd->scr[5] = 0x00; |
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209 sd->scr[6] = 0x00; |
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210 sd->scr[7] = 0x00; |
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211 } |
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212 |
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213 #define MID 0xaa |
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214 #define OID "XY" |
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215 #define PNM "QEMU!" |
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216 #define PRV 0x01 |
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217 #define MDT_YR 2006 |
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218 #define MDT_MON 2 |
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219 |
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220 static void sd_set_cid(SDState *sd) |
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221 { |
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222 sd->cid[0] = MID; /* Fake card manufacturer ID (MID) */ |
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223 sd->cid[1] = OID[0]; /* OEM/Application ID (OID) */ |
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224 sd->cid[2] = OID[1]; |
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225 sd->cid[3] = PNM[0]; /* Fake product name (PNM) */ |
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226 sd->cid[4] = PNM[1]; |
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227 sd->cid[5] = PNM[2]; |
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228 sd->cid[6] = PNM[3]; |
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229 sd->cid[7] = PNM[4]; |
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230 sd->cid[8] = PRV; /* Fake product revision (PRV) */ |
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231 sd->cid[9] = 0xde; /* Fake serial number (PSN) */ |
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232 sd->cid[10] = 0xad; |
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233 sd->cid[11] = 0xbe; |
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234 sd->cid[12] = 0xef; |
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235 sd->cid[13] = 0x00 | /* Manufacture date (MDT) */ |
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236 ((MDT_YR - 2000) / 10); |
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237 sd->cid[14] = ((MDT_YR % 10) << 4) | MDT_MON; |
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238 sd->cid[15] = (sd_crc7(sd->cid, 15) << 1) | 1; |
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239 } |
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240 |
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241 #define HWBLOCK_SHIFT 9 /* 512 bytes */ |
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242 #define SECTOR_SHIFT 5 /* 16 kilobytes */ |
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243 #define WPGROUP_SHIFT 7 /* 2 megs */ |
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244 #define CMULT_SHIFT 9 /* 512 times HWBLOCK_SIZE */ |
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245 #define BLOCK_SIZE (1 << (HWBLOCK_SHIFT)) |
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246 #define SECTOR_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT)) |
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247 #define WPGROUP_SIZE (1 << (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) |
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248 |
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249 static const uint8_t sd_csd_rw_mask[16] = { |
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250 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, |
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251 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xfc, 0xfe, |
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252 }; |
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253 |
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254 static void sd_set_csd(SDState *sd, uint32_t size) |
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255 { |
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256 uint32_t csize = (size >> (CMULT_SHIFT + HWBLOCK_SHIFT)) - 1; |
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257 uint32_t sectsize = (1 << (SECTOR_SHIFT + 1)) - 1; |
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258 uint32_t wpsize = (1 << (WPGROUP_SHIFT + 1)) - 1; |
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259 |
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260 sd->csd[0] = 0x00; /* CSD structure */ |
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261 sd->csd[1] = 0x26; /* Data read access-time-1 */ |
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262 sd->csd[2] = 0x00; /* Data read access-time-2 */ |
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263 sd->csd[3] = 0x5a; /* Max. data transfer rate */ |
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264 sd->csd[4] = 0x5f; /* Card Command Classes */ |
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265 sd->csd[5] = 0x50 | /* Max. read data block length */ |
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266 HWBLOCK_SHIFT; |
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267 sd->csd[6] = 0xe0 | /* Partial block for read allowed */ |
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268 ((csize >> 10) & 0x03); |
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269 sd->csd[7] = 0x00 | /* Device size */ |
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270 ((csize >> 2) & 0xff); |
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271 sd->csd[8] = 0x3f | /* Max. read current */ |
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272 ((csize << 6) & 0xc0); |
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273 sd->csd[9] = 0xfc | /* Max. write current */ |
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274 ((CMULT_SHIFT - 2) >> 1); |
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275 sd->csd[10] = 0x40 | /* Erase sector size */ |
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276 (((CMULT_SHIFT - 2) << 7) & 0x80) | (sectsize >> 1); |
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277 sd->csd[11] = 0x00 | /* Write protect group size */ |
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278 ((sectsize << 7) & 0x80) | wpsize; |
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279 sd->csd[12] = 0x90 | /* Write speed factor */ |
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280 (HWBLOCK_SHIFT >> 2); |
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281 sd->csd[13] = 0x20 | /* Max. write data block length */ |
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282 ((HWBLOCK_SHIFT << 6) & 0xc0); |
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283 sd->csd[14] = 0x00; /* File format group */ |
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284 sd->csd[15] = (sd_crc7(sd->csd, 15) << 1) | 1; |
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285 } |
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286 |
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287 static void sd_set_rca(SDState *sd) |
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288 { |
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289 sd->rca += 0x4567; |
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290 } |
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291 |
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292 #define CARD_STATUS_A 0x02004100 |
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293 #define CARD_STATUS_B 0x00c01e00 |
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294 #define CARD_STATUS_C 0xfd39a028 |
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295 |
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296 static void sd_set_cardstatus(SDState *sd) |
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297 { |
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298 sd->card_status = 0x00000100; |
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299 } |
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300 |
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301 static void sd_set_sdstatus(SDState *sd) |
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302 { |
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303 memset(sd->sd_status, 0, 64); |
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304 } |
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305 |
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306 static int sd_req_crc_validate(struct sd_request_s *req) |
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307 { |
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308 uint8_t buffer[5]; |
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309 buffer[0] = 0x40 | req->cmd; |
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310 buffer[1] = (req->arg >> 24) & 0xff; |
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311 buffer[2] = (req->arg >> 16) & 0xff; |
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312 buffer[3] = (req->arg >> 8) & 0xff; |
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313 buffer[4] = (req->arg >> 0) & 0xff; |
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314 return 0; |
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315 return sd_crc7(buffer, 5) != req->crc; /* TODO */ |
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316 } |
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317 |
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318 static void sd_response_r1_make(SDState *sd, |
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319 uint8_t *response, uint32_t last_status) |
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320 { |
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321 uint32_t mask = CARD_STATUS_B ^ ILLEGAL_COMMAND; |
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322 uint32_t status; |
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323 |
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324 status = (sd->card_status & ~mask) | (last_status & mask); |
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325 sd->card_status &= ~CARD_STATUS_C | APP_CMD; |
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326 |
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327 response[0] = (status >> 24) & 0xff; |
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328 response[1] = (status >> 16) & 0xff; |
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329 response[2] = (status >> 8) & 0xff; |
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330 response[3] = (status >> 0) & 0xff; |
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331 } |
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332 |
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333 static void sd_response_r3_make(SDState *sd, uint8_t *response) |
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334 { |
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335 response[0] = (sd->ocr >> 24) & 0xff; |
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336 response[1] = (sd->ocr >> 16) & 0xff; |
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337 response[2] = (sd->ocr >> 8) & 0xff; |
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338 response[3] = (sd->ocr >> 0) & 0xff; |
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339 } |
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340 |
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341 static void sd_response_r6_make(SDState *sd, uint8_t *response) |
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342 { |
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343 uint16_t arg; |
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344 uint16_t status; |
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345 |
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346 arg = sd->rca; |
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347 status = ((sd->card_status >> 8) & 0xc000) | |
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348 ((sd->card_status >> 6) & 0x2000) | |
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349 (sd->card_status & 0x1fff); |
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350 |
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351 response[0] = (arg >> 8) & 0xff; |
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352 response[1] = arg & 0xff; |
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353 response[2] = (status >> 8) & 0xff; |
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354 response[3] = status & 0xff; |
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355 } |
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356 |
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357 static void sd_response_r7_make(SDState *sd, uint8_t *response) |
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358 { |
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359 response[0] = (sd->vhs >> 24) & 0xff; |
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360 response[1] = (sd->vhs >> 16) & 0xff; |
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361 response[2] = (sd->vhs >> 8) & 0xff; |
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362 response[3] = (sd->vhs >> 0) & 0xff; |
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363 } |
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364 |
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365 static void sd_reset(SDState *sd, BlockDriverState *bdrv) |
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366 { |
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367 uint32_t size; |
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368 uint64_t sect; |
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369 |
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370 bdrv_get_geometry(bdrv, §); |
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371 sect <<= 9; |
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372 |
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373 if (sect > 0x40000000) |
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374 size = 0x40000000; /* 1 gig */ |
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375 else |
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376 size = sect + 1; |
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377 |
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378 sect = (size >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)) + 1; |
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379 |
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380 sd->state = sd_idle_state; |
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381 sd->rca = 0x0000; |
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382 sd_set_ocr(sd); |
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383 sd_set_scr(sd); |
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384 sd_set_cid(sd); |
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385 sd_set_csd(sd, size); |
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386 sd_set_cardstatus(sd); |
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387 sd_set_sdstatus(sd); |
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388 |
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389 sd->bdrv = bdrv; |
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390 |
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391 if (sd->wp_groups) |
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392 qemu_free(sd->wp_groups); |
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393 sd->wp_switch = bdrv_is_read_only(bdrv); |
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394 sd->wp_groups = (int *) qemu_mallocz(sizeof(int) * sect); |
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395 memset(sd->function_group, 0, sizeof(int) * 6); |
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396 sd->erase_start = 0; |
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397 sd->erase_end = 0; |
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398 sd->size = size; |
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399 sd->blk_len = 0x200; |
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400 sd->pwd_len = 0; |
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401 } |
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402 |
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403 static void sd_cardchange(void *opaque) |
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404 { |
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405 SDState *sd = opaque; |
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406 qemu_set_irq(sd->inserted_cb, bdrv_is_inserted(sd->bdrv)); |
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407 if (bdrv_is_inserted(sd->bdrv)) { |
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408 sd_reset(sd, sd->bdrv); |
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409 qemu_set_irq(sd->readonly_cb, sd->wp_switch); |
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410 } |
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411 } |
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412 |
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413 /* We do not model the chip select pin, so allow the board to select |
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414 whether card should be in SSI or MMC/SD mode. It is also up to the |
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415 board to ensure that ssi transfers only occur when the chip select |
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416 is asserted. */ |
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417 SDState *sd_init(BlockDriverState *bs, int is_spi) |
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418 { |
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419 SDState *sd; |
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420 |
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421 sd = (SDState *) qemu_mallocz(sizeof(SDState)); |
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422 sd->buf = qemu_memalign(512, 512); |
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423 sd->spi = is_spi; |
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424 sd->enable = 1; |
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425 sd_reset(sd, bs); |
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426 bdrv_set_change_cb(sd->bdrv, sd_cardchange, sd); |
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427 return sd; |
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428 } |
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429 |
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430 void sd_set_cb(SDState *sd, qemu_irq readonly, qemu_irq insert) |
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431 { |
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432 sd->readonly_cb = readonly; |
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433 sd->inserted_cb = insert; |
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434 qemu_set_irq(readonly, bdrv_is_read_only(sd->bdrv)); |
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435 qemu_set_irq(insert, bdrv_is_inserted(sd->bdrv)); |
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436 } |
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437 |
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438 static void sd_erase(SDState *sd) |
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439 { |
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440 int i, start, end; |
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441 if (!sd->erase_start || !sd->erase_end) { |
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442 sd->card_status |= ERASE_SEQ_ERROR; |
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443 return; |
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444 } |
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445 |
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446 start = sd->erase_start >> |
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447 (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
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448 end = sd->erase_end >> |
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449 (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
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450 sd->erase_start = 0; |
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451 sd->erase_end = 0; |
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452 sd->csd[14] |= 0x40; |
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453 |
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454 for (i = start; i <= end; i ++) |
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455 if (sd->wp_groups[i]) |
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456 sd->card_status |= WP_ERASE_SKIP; |
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457 } |
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458 |
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459 static uint32_t sd_wpbits(SDState *sd, uint32_t addr) |
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460 { |
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461 uint32_t i, wpnum; |
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462 uint32_t ret = 0; |
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463 |
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464 wpnum = addr >> (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT); |
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465 |
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466 for (i = 0; i < 32; i ++, wpnum ++, addr += WPGROUP_SIZE) |
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467 if (addr < sd->size && sd->wp_groups[wpnum]) |
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468 ret |= (1 << i); |
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469 |
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470 return ret; |
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471 } |
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472 |
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473 static void sd_function_switch(SDState *sd, uint32_t arg) |
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474 { |
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475 int i, mode, new_func, crc; |
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476 mode = !!(arg & 0x80000000); |
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477 |
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478 sd->data[0] = 0x00; /* Maximum current consumption */ |
|
479 sd->data[1] = 0x01; |
|
480 sd->data[2] = 0x80; /* Supported group 6 functions */ |
|
481 sd->data[3] = 0x01; |
|
482 sd->data[4] = 0x80; /* Supported group 5 functions */ |
|
483 sd->data[5] = 0x01; |
|
484 sd->data[6] = 0x80; /* Supported group 4 functions */ |
|
485 sd->data[7] = 0x01; |
|
486 sd->data[8] = 0x80; /* Supported group 3 functions */ |
|
487 sd->data[9] = 0x01; |
|
488 sd->data[10] = 0x80; /* Supported group 2 functions */ |
|
489 sd->data[11] = 0x43; |
|
490 sd->data[12] = 0x80; /* Supported group 1 functions */ |
|
491 sd->data[13] = 0x03; |
|
492 for (i = 0; i < 6; i ++) { |
|
493 new_func = (arg >> (i * 4)) & 0x0f; |
|
494 if (mode && new_func != 0x0f) |
|
495 sd->function_group[i] = new_func; |
|
496 sd->data[14 + (i >> 1)] = new_func << ((i * 4) & 4); |
|
497 } |
|
498 memset(&sd->data[17], 0, 47); |
|
499 crc = sd_crc16(sd->data, 64); |
|
500 sd->data[65] = crc >> 8; |
|
501 sd->data[66] = crc & 0xff; |
|
502 } |
|
503 |
|
504 static inline int sd_wp_addr(SDState *sd, uint32_t addr) |
|
505 { |
|
506 return sd->wp_groups[addr >> |
|
507 (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT)]; |
|
508 } |
|
509 |
|
510 static void sd_lock_command(SDState *sd) |
|
511 { |
|
512 int erase, lock, clr_pwd, set_pwd, pwd_len; |
|
513 erase = !!(sd->data[0] & 0x08); |
|
514 lock = sd->data[0] & 0x04; |
|
515 clr_pwd = sd->data[0] & 0x02; |
|
516 set_pwd = sd->data[0] & 0x01; |
|
517 |
|
518 if (sd->blk_len > 1) |
|
519 pwd_len = sd->data[1]; |
|
520 else |
|
521 pwd_len = 0; |
|
522 |
|
523 if (erase) { |
|
524 if (!(sd->card_status & CARD_IS_LOCKED) || sd->blk_len > 1 || |
|
525 set_pwd || clr_pwd || lock || sd->wp_switch || |
|
526 (sd->csd[14] & 0x20)) { |
|
527 sd->card_status |= LOCK_UNLOCK_FAILED; |
|
528 return; |
|
529 } |
|
530 memset(sd->wp_groups, 0, sizeof(int) * (sd->size >> |
|
531 (HWBLOCK_SHIFT + SECTOR_SHIFT + WPGROUP_SHIFT))); |
|
532 sd->csd[14] &= ~0x10; |
|
533 sd->card_status &= ~CARD_IS_LOCKED; |
|
534 sd->pwd_len = 0; |
|
535 /* Erasing the entire card here! */ |
|
536 fprintf(stderr, "SD: Card force-erased by CMD42\n"); |
|
537 return; |
|
538 } |
|
539 |
|
540 if (sd->blk_len < 2 + pwd_len || |
|
541 pwd_len <= sd->pwd_len || |
|
542 pwd_len > sd->pwd_len + 16) { |
|
543 sd->card_status |= LOCK_UNLOCK_FAILED; |
|
544 return; |
|
545 } |
|
546 |
|
547 if (sd->pwd_len && memcmp(sd->pwd, sd->data + 2, sd->pwd_len)) { |
|
548 sd->card_status |= LOCK_UNLOCK_FAILED; |
|
549 return; |
|
550 } |
|
551 |
|
552 pwd_len -= sd->pwd_len; |
|
553 if ((pwd_len && !set_pwd) || |
|
554 (clr_pwd && (set_pwd || lock)) || |
|
555 (lock && !sd->pwd_len && !set_pwd) || |
|
556 (!set_pwd && !clr_pwd && |
|
557 (((sd->card_status & CARD_IS_LOCKED) && lock) || |
|
558 (!(sd->card_status & CARD_IS_LOCKED) && !lock)))) { |
|
559 sd->card_status |= LOCK_UNLOCK_FAILED; |
|
560 return; |
|
561 } |
|
562 |
|
563 if (set_pwd) { |
|
564 memcpy(sd->pwd, sd->data + 2 + sd->pwd_len, pwd_len); |
|
565 sd->pwd_len = pwd_len; |
|
566 } |
|
567 |
|
568 if (clr_pwd) { |
|
569 sd->pwd_len = 0; |
|
570 } |
|
571 |
|
572 if (lock) |
|
573 sd->card_status |= CARD_IS_LOCKED; |
|
574 else |
|
575 sd->card_status &= ~CARD_IS_LOCKED; |
|
576 } |
|
577 |
|
578 static sd_rsp_type_t sd_normal_command(SDState *sd, |
|
579 struct sd_request_s req) |
|
580 { |
|
581 uint32_t rca = 0x0000; |
|
582 |
|
583 if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc) |
|
584 rca = req.arg >> 16; |
|
585 |
|
586 DPRINTF("CMD%d 0x%08x state %d\n", req.cmd, req.arg, sd->state); |
|
587 switch (req.cmd) { |
|
588 /* Basic commands (Class 0 and Class 1) */ |
|
589 case 0: /* CMD0: GO_IDLE_STATE */ |
|
590 switch (sd->state) { |
|
591 case sd_inactive_state: |
|
592 return sd->spi ? sd_r1 : sd_r0; |
|
593 |
|
594 default: |
|
595 sd->state = sd_idle_state; |
|
596 sd_reset(sd, sd->bdrv); |
|
597 return sd->spi ? sd_r1 : sd_r0; |
|
598 } |
|
599 break; |
|
600 |
|
601 case 1: /* CMD1: SEND_OP_CMD */ |
|
602 if (!sd->spi) |
|
603 goto bad_cmd; |
|
604 |
|
605 sd->state = sd_transfer_state; |
|
606 return sd_r1; |
|
607 |
|
608 case 2: /* CMD2: ALL_SEND_CID */ |
|
609 if (sd->spi) |
|
610 goto bad_cmd; |
|
611 switch (sd->state) { |
|
612 case sd_ready_state: |
|
613 sd->state = sd_identification_state; |
|
614 return sd_r2_i; |
|
615 |
|
616 default: |
|
617 break; |
|
618 } |
|
619 break; |
|
620 |
|
621 case 3: /* CMD3: SEND_RELATIVE_ADDR */ |
|
622 if (sd->spi) |
|
623 goto bad_cmd; |
|
624 switch (sd->state) { |
|
625 case sd_identification_state: |
|
626 case sd_standby_state: |
|
627 sd->state = sd_standby_state; |
|
628 sd_set_rca(sd); |
|
629 return sd_r6; |
|
630 |
|
631 default: |
|
632 break; |
|
633 } |
|
634 break; |
|
635 |
|
636 case 4: /* CMD4: SEND_DSR */ |
|
637 if (sd->spi) |
|
638 goto bad_cmd; |
|
639 switch (sd->state) { |
|
640 case sd_standby_state: |
|
641 break; |
|
642 |
|
643 default: |
|
644 break; |
|
645 } |
|
646 break; |
|
647 |
|
648 case 6: /* CMD6: SWITCH_FUNCTION */ |
|
649 if (sd->spi) |
|
650 goto bad_cmd; |
|
651 switch (sd->mode) { |
|
652 case sd_data_transfer_mode: |
|
653 sd_function_switch(sd, req.arg); |
|
654 sd->state = sd_sendingdata_state; |
|
655 sd->data_start = 0; |
|
656 sd->data_offset = 0; |
|
657 return sd_r1; |
|
658 |
|
659 default: |
|
660 break; |
|
661 } |
|
662 break; |
|
663 |
|
664 case 7: /* CMD7: SELECT/DESELECT_CARD */ |
|
665 if (sd->spi) |
|
666 goto bad_cmd; |
|
667 switch (sd->state) { |
|
668 case sd_standby_state: |
|
669 if (sd->rca != rca) |
|
670 return sd_r0; |
|
671 |
|
672 sd->state = sd_transfer_state; |
|
673 return sd_r1b; |
|
674 |
|
675 case sd_transfer_state: |
|
676 case sd_sendingdata_state: |
|
677 if (sd->rca == rca) |
|
678 break; |
|
679 |
|
680 sd->state = sd_standby_state; |
|
681 return sd_r1b; |
|
682 |
|
683 case sd_disconnect_state: |
|
684 if (sd->rca != rca) |
|
685 return sd_r0; |
|
686 |
|
687 sd->state = sd_programming_state; |
|
688 return sd_r1b; |
|
689 |
|
690 case sd_programming_state: |
|
691 if (sd->rca == rca) |
|
692 break; |
|
693 |
|
694 sd->state = sd_disconnect_state; |
|
695 return sd_r1b; |
|
696 |
|
697 default: |
|
698 break; |
|
699 } |
|
700 break; |
|
701 |
|
702 case 8: /* CMD8: SEND_IF_COND */ |
|
703 /* Physical Layer Specification Version 2.00 command */ |
|
704 switch (sd->state) { |
|
705 case sd_idle_state: |
|
706 sd->vhs = 0; |
|
707 |
|
708 /* No response if not exactly one VHS bit is set. */ |
|
709 if (!(req.arg >> 8) || (req.arg >> ffs(req.arg & ~0xff))) |
|
710 return sd->spi ? sd_r7 : sd_r0; |
|
711 |
|
712 /* Accept. */ |
|
713 sd->vhs = req.arg; |
|
714 return sd_r7; |
|
715 |
|
716 default: |
|
717 break; |
|
718 } |
|
719 break; |
|
720 |
|
721 case 9: /* CMD9: SEND_CSD */ |
|
722 switch (sd->state) { |
|
723 case sd_standby_state: |
|
724 if (sd->rca != rca) |
|
725 return sd_r0; |
|
726 |
|
727 return sd_r2_s; |
|
728 |
|
729 case sd_transfer_state: |
|
730 if (!sd->spi) |
|
731 break; |
|
732 sd->state = sd_sendingdata_state; |
|
733 memcpy(sd->data, sd->csd, 16); |
|
734 sd->data_start = req.arg; |
|
735 sd->data_offset = 0; |
|
736 return sd_r1; |
|
737 |
|
738 default: |
|
739 break; |
|
740 } |
|
741 break; |
|
742 |
|
743 case 10: /* CMD10: SEND_CID */ |
|
744 switch (sd->state) { |
|
745 case sd_standby_state: |
|
746 if (sd->rca != rca) |
|
747 return sd_r0; |
|
748 |
|
749 return sd_r2_i; |
|
750 |
|
751 case sd_transfer_state: |
|
752 if (!sd->spi) |
|
753 break; |
|
754 sd->state = sd_sendingdata_state; |
|
755 memcpy(sd->data, sd->cid, 16); |
|
756 sd->data_start = req.arg; |
|
757 sd->data_offset = 0; |
|
758 return sd_r1; |
|
759 |
|
760 default: |
|
761 break; |
|
762 } |
|
763 break; |
|
764 |
|
765 case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
|
766 if (sd->spi) |
|
767 goto bad_cmd; |
|
768 switch (sd->state) { |
|
769 case sd_transfer_state: |
|
770 sd->state = sd_sendingdata_state; |
|
771 sd->data_start = req.arg; |
|
772 sd->data_offset = 0; |
|
773 |
|
774 if (sd->data_start + sd->blk_len > sd->size) |
|
775 sd->card_status |= ADDRESS_ERROR; |
|
776 return sd_r0; |
|
777 |
|
778 default: |
|
779 break; |
|
780 } |
|
781 break; |
|
782 |
|
783 case 12: /* CMD12: STOP_TRANSMISSION */ |
|
784 switch (sd->state) { |
|
785 case sd_sendingdata_state: |
|
786 sd->state = sd_transfer_state; |
|
787 return sd_r1b; |
|
788 |
|
789 case sd_receivingdata_state: |
|
790 sd->state = sd_programming_state; |
|
791 /* Bzzzzzzztt .... Operation complete. */ |
|
792 sd->state = sd_transfer_state; |
|
793 return sd_r1b; |
|
794 |
|
795 default: |
|
796 break; |
|
797 } |
|
798 break; |
|
799 |
|
800 case 13: /* CMD13: SEND_STATUS */ |
|
801 switch (sd->mode) { |
|
802 case sd_data_transfer_mode: |
|
803 if (sd->rca != rca) |
|
804 return sd_r0; |
|
805 |
|
806 return sd_r1; |
|
807 |
|
808 default: |
|
809 break; |
|
810 } |
|
811 break; |
|
812 |
|
813 case 15: /* CMD15: GO_INACTIVE_STATE */ |
|
814 if (sd->spi) |
|
815 goto bad_cmd; |
|
816 switch (sd->mode) { |
|
817 case sd_data_transfer_mode: |
|
818 if (sd->rca != rca) |
|
819 return sd_r0; |
|
820 |
|
821 sd->state = sd_inactive_state; |
|
822 return sd_r0; |
|
823 |
|
824 default: |
|
825 break; |
|
826 } |
|
827 break; |
|
828 |
|
829 /* Block read commands (Classs 2) */ |
|
830 case 16: /* CMD16: SET_BLOCKLEN */ |
|
831 switch (sd->state) { |
|
832 case sd_transfer_state: |
|
833 if (req.arg > (1 << HWBLOCK_SHIFT)) |
|
834 sd->card_status |= BLOCK_LEN_ERROR; |
|
835 else |
|
836 sd->blk_len = req.arg; |
|
837 |
|
838 return sd_r1; |
|
839 |
|
840 default: |
|
841 break; |
|
842 } |
|
843 break; |
|
844 |
|
845 case 17: /* CMD17: READ_SINGLE_BLOCK */ |
|
846 switch (sd->state) { |
|
847 case sd_transfer_state: |
|
848 sd->state = sd_sendingdata_state; |
|
849 sd->data_start = req.arg; |
|
850 sd->data_offset = 0; |
|
851 |
|
852 if (sd->data_start + sd->blk_len > sd->size) |
|
853 sd->card_status |= ADDRESS_ERROR; |
|
854 return sd_r1; |
|
855 |
|
856 default: |
|
857 break; |
|
858 } |
|
859 break; |
|
860 |
|
861 case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
|
862 switch (sd->state) { |
|
863 case sd_transfer_state: |
|
864 sd->state = sd_sendingdata_state; |
|
865 sd->data_start = req.arg; |
|
866 sd->data_offset = 0; |
|
867 |
|
868 if (sd->data_start + sd->blk_len > sd->size) |
|
869 sd->card_status |= ADDRESS_ERROR; |
|
870 return sd_r1; |
|
871 |
|
872 default: |
|
873 break; |
|
874 } |
|
875 break; |
|
876 |
|
877 /* Block write commands (Class 4) */ |
|
878 case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
|
879 if (sd->spi) |
|
880 goto unimplemented_cmd; |
|
881 switch (sd->state) { |
|
882 case sd_transfer_state: |
|
883 /* Writing in SPI mode not implemented. */ |
|
884 if (sd->spi) |
|
885 break; |
|
886 sd->state = sd_receivingdata_state; |
|
887 sd->data_start = req.arg; |
|
888 sd->data_offset = 0; |
|
889 sd->blk_written = 0; |
|
890 |
|
891 if (sd->data_start + sd->blk_len > sd->size) |
|
892 sd->card_status |= ADDRESS_ERROR; |
|
893 if (sd_wp_addr(sd, sd->data_start)) |
|
894 sd->card_status |= WP_VIOLATION; |
|
895 if (sd->csd[14] & 0x30) |
|
896 sd->card_status |= WP_VIOLATION; |
|
897 return sd_r1; |
|
898 |
|
899 default: |
|
900 break; |
|
901 } |
|
902 break; |
|
903 |
|
904 case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
|
905 if (sd->spi) |
|
906 goto unimplemented_cmd; |
|
907 switch (sd->state) { |
|
908 case sd_transfer_state: |
|
909 /* Writing in SPI mode not implemented. */ |
|
910 if (sd->spi) |
|
911 break; |
|
912 sd->state = sd_receivingdata_state; |
|
913 sd->data_start = req.arg; |
|
914 sd->data_offset = 0; |
|
915 sd->blk_written = 0; |
|
916 |
|
917 if (sd->data_start + sd->blk_len > sd->size) |
|
918 sd->card_status |= ADDRESS_ERROR; |
|
919 if (sd_wp_addr(sd, sd->data_start)) |
|
920 sd->card_status |= WP_VIOLATION; |
|
921 if (sd->csd[14] & 0x30) |
|
922 sd->card_status |= WP_VIOLATION; |
|
923 return sd_r1; |
|
924 |
|
925 default: |
|
926 break; |
|
927 } |
|
928 break; |
|
929 |
|
930 case 26: /* CMD26: PROGRAM_CID */ |
|
931 if (sd->spi) |
|
932 goto bad_cmd; |
|
933 switch (sd->state) { |
|
934 case sd_transfer_state: |
|
935 sd->state = sd_receivingdata_state; |
|
936 sd->data_start = 0; |
|
937 sd->data_offset = 0; |
|
938 return sd_r1; |
|
939 |
|
940 default: |
|
941 break; |
|
942 } |
|
943 break; |
|
944 |
|
945 case 27: /* CMD27: PROGRAM_CSD */ |
|
946 if (sd->spi) |
|
947 goto unimplemented_cmd; |
|
948 switch (sd->state) { |
|
949 case sd_transfer_state: |
|
950 sd->state = sd_receivingdata_state; |
|
951 sd->data_start = 0; |
|
952 sd->data_offset = 0; |
|
953 return sd_r1; |
|
954 |
|
955 default: |
|
956 break; |
|
957 } |
|
958 break; |
|
959 |
|
960 /* Write protection (Class 6) */ |
|
961 case 28: /* CMD28: SET_WRITE_PROT */ |
|
962 switch (sd->state) { |
|
963 case sd_transfer_state: |
|
964 if (req.arg >= sd->size) { |
|
965 sd->card_status = ADDRESS_ERROR; |
|
966 return sd_r1b; |
|
967 } |
|
968 |
|
969 sd->state = sd_programming_state; |
|
970 sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + |
|
971 SECTOR_SHIFT + WPGROUP_SHIFT)] = 1; |
|
972 /* Bzzzzzzztt .... Operation complete. */ |
|
973 sd->state = sd_transfer_state; |
|
974 return sd_r1b; |
|
975 |
|
976 default: |
|
977 break; |
|
978 } |
|
979 break; |
|
980 |
|
981 case 29: /* CMD29: CLR_WRITE_PROT */ |
|
982 switch (sd->state) { |
|
983 case sd_transfer_state: |
|
984 if (req.arg >= sd->size) { |
|
985 sd->card_status = ADDRESS_ERROR; |
|
986 return sd_r1b; |
|
987 } |
|
988 |
|
989 sd->state = sd_programming_state; |
|
990 sd->wp_groups[req.arg >> (HWBLOCK_SHIFT + |
|
991 SECTOR_SHIFT + WPGROUP_SHIFT)] = 0; |
|
992 /* Bzzzzzzztt .... Operation complete. */ |
|
993 sd->state = sd_transfer_state; |
|
994 return sd_r1b; |
|
995 |
|
996 default: |
|
997 break; |
|
998 } |
|
999 break; |
|
1000 |
|
1001 case 30: /* CMD30: SEND_WRITE_PROT */ |
|
1002 switch (sd->state) { |
|
1003 case sd_transfer_state: |
|
1004 sd->state = sd_sendingdata_state; |
|
1005 *(uint32_t *) sd->data = sd_wpbits(sd, req.arg); |
|
1006 sd->data_start = req.arg; |
|
1007 sd->data_offset = 0; |
|
1008 return sd_r1b; |
|
1009 |
|
1010 default: |
|
1011 break; |
|
1012 } |
|
1013 break; |
|
1014 |
|
1015 /* Erase commands (Class 5) */ |
|
1016 case 32: /* CMD32: ERASE_WR_BLK_START */ |
|
1017 switch (sd->state) { |
|
1018 case sd_transfer_state: |
|
1019 sd->erase_start = req.arg; |
|
1020 return sd_r1; |
|
1021 |
|
1022 default: |
|
1023 break; |
|
1024 } |
|
1025 break; |
|
1026 |
|
1027 case 33: /* CMD33: ERASE_WR_BLK_END */ |
|
1028 switch (sd->state) { |
|
1029 case sd_transfer_state: |
|
1030 sd->erase_end = req.arg; |
|
1031 return sd_r1; |
|
1032 |
|
1033 default: |
|
1034 break; |
|
1035 } |
|
1036 break; |
|
1037 |
|
1038 case 38: /* CMD38: ERASE */ |
|
1039 switch (sd->state) { |
|
1040 case sd_transfer_state: |
|
1041 if (sd->csd[14] & 0x30) { |
|
1042 sd->card_status |= WP_VIOLATION; |
|
1043 return sd_r1b; |
|
1044 } |
|
1045 |
|
1046 sd->state = sd_programming_state; |
|
1047 sd_erase(sd); |
|
1048 /* Bzzzzzzztt .... Operation complete. */ |
|
1049 sd->state = sd_transfer_state; |
|
1050 return sd_r1b; |
|
1051 |
|
1052 default: |
|
1053 break; |
|
1054 } |
|
1055 break; |
|
1056 |
|
1057 /* Lock card commands (Class 7) */ |
|
1058 case 42: /* CMD42: LOCK_UNLOCK */ |
|
1059 if (sd->spi) |
|
1060 goto unimplemented_cmd; |
|
1061 switch (sd->state) { |
|
1062 case sd_transfer_state: |
|
1063 sd->state = sd_receivingdata_state; |
|
1064 sd->data_start = 0; |
|
1065 sd->data_offset = 0; |
|
1066 return sd_r1; |
|
1067 |
|
1068 default: |
|
1069 break; |
|
1070 } |
|
1071 break; |
|
1072 |
|
1073 /* Application specific commands (Class 8) */ |
|
1074 case 55: /* CMD55: APP_CMD */ |
|
1075 if (sd->rca != rca) |
|
1076 return sd_r0; |
|
1077 |
|
1078 sd->card_status |= APP_CMD; |
|
1079 return sd_r1; |
|
1080 |
|
1081 case 56: /* CMD56: GEN_CMD */ |
|
1082 fprintf(stderr, "SD: GEN_CMD 0x%08x\n", req.arg); |
|
1083 |
|
1084 switch (sd->state) { |
|
1085 case sd_transfer_state: |
|
1086 sd->data_offset = 0; |
|
1087 if (req.arg & 1) |
|
1088 sd->state = sd_sendingdata_state; |
|
1089 else |
|
1090 sd->state = sd_receivingdata_state; |
|
1091 return sd_r1; |
|
1092 |
|
1093 default: |
|
1094 break; |
|
1095 } |
|
1096 break; |
|
1097 |
|
1098 default: |
|
1099 bad_cmd: |
|
1100 sd->card_status |= ILLEGAL_COMMAND; |
|
1101 |
|
1102 fprintf(stderr, "SD: Unknown CMD%i\n", req.cmd); |
|
1103 return sd_r0; |
|
1104 |
|
1105 unimplemented_cmd: |
|
1106 /* Commands that are recognised but not yet implemented in SPI mode. */ |
|
1107 sd->card_status |= ILLEGAL_COMMAND; |
|
1108 fprintf(stderr, "SD: CMD%i not implemented in SPI mode\n", req.cmd); |
|
1109 return sd_r0; |
|
1110 } |
|
1111 |
|
1112 sd->card_status |= ILLEGAL_COMMAND; |
|
1113 fprintf(stderr, "SD: CMD%i in a wrong state\n", req.cmd); |
|
1114 return sd_r0; |
|
1115 } |
|
1116 |
|
1117 static sd_rsp_type_t sd_app_command(SDState *sd, |
|
1118 struct sd_request_s req) { |
|
1119 uint32_t rca; |
|
1120 |
|
1121 if (sd_cmd_type[req.cmd] == sd_ac || sd_cmd_type[req.cmd] == sd_adtc) |
|
1122 rca = req.arg >> 16; |
|
1123 |
|
1124 DPRINTF("ACMD%d 0x%08x\n", req.cmd, req.arg); |
|
1125 switch (req.cmd) { |
|
1126 case 6: /* ACMD6: SET_BUS_WIDTH */ |
|
1127 switch (sd->state) { |
|
1128 case sd_transfer_state: |
|
1129 sd->sd_status[0] &= 0x3f; |
|
1130 sd->sd_status[0] |= (req.arg & 0x03) << 6; |
|
1131 return sd_r1; |
|
1132 |
|
1133 default: |
|
1134 break; |
|
1135 } |
|
1136 break; |
|
1137 |
|
1138 case 13: /* ACMD13: SD_STATUS */ |
|
1139 switch (sd->state) { |
|
1140 case sd_transfer_state: |
|
1141 sd->data_start = 0; |
|
1142 sd->data_offset = 0; |
|
1143 return sd_r1; |
|
1144 |
|
1145 default: |
|
1146 break; |
|
1147 } |
|
1148 break; |
|
1149 |
|
1150 case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
|
1151 switch (sd->state) { |
|
1152 case sd_transfer_state: |
|
1153 *(uint32_t *) sd->data = sd->blk_written; |
|
1154 |
|
1155 sd->data_start = 0; |
|
1156 sd->data_offset = 0; |
|
1157 return sd_r1; |
|
1158 |
|
1159 default: |
|
1160 break; |
|
1161 } |
|
1162 break; |
|
1163 |
|
1164 case 23: /* ACMD23: SET_WR_BLK_ERASE_COUNT */ |
|
1165 switch (sd->state) { |
|
1166 case sd_transfer_state: |
|
1167 return sd_r1; |
|
1168 |
|
1169 default: |
|
1170 break; |
|
1171 } |
|
1172 break; |
|
1173 |
|
1174 case 41: /* ACMD41: SD_APP_OP_COND */ |
|
1175 if (sd->spi) { |
|
1176 /* SEND_OP_CMD */ |
|
1177 sd->state = sd_transfer_state; |
|
1178 return sd_r1; |
|
1179 } |
|
1180 switch (sd->state) { |
|
1181 case sd_idle_state: |
|
1182 /* We accept any voltage. 10000 V is nothing. */ |
|
1183 if (req.arg) |
|
1184 sd->state = sd_ready_state; |
|
1185 |
|
1186 return sd_r3; |
|
1187 |
|
1188 default: |
|
1189 break; |
|
1190 } |
|
1191 break; |
|
1192 |
|
1193 case 42: /* ACMD42: SET_CLR_CARD_DETECT */ |
|
1194 switch (sd->state) { |
|
1195 case sd_transfer_state: |
|
1196 /* Bringing in the 50KOhm pull-up resistor... Done. */ |
|
1197 return sd_r1; |
|
1198 |
|
1199 default: |
|
1200 break; |
|
1201 } |
|
1202 break; |
|
1203 |
|
1204 case 51: /* ACMD51: SEND_SCR */ |
|
1205 switch (sd->state) { |
|
1206 case sd_transfer_state: |
|
1207 sd->state = sd_sendingdata_state; |
|
1208 sd->data_start = 0; |
|
1209 sd->data_offset = 0; |
|
1210 return sd_r1; |
|
1211 |
|
1212 default: |
|
1213 break; |
|
1214 } |
|
1215 break; |
|
1216 |
|
1217 default: |
|
1218 /* Fall back to standard commands. */ |
|
1219 sd->card_status &= ~APP_CMD; |
|
1220 return sd_normal_command(sd, req); |
|
1221 } |
|
1222 |
|
1223 fprintf(stderr, "SD: ACMD%i in a wrong state\n", req.cmd); |
|
1224 return sd_r0; |
|
1225 } |
|
1226 |
|
1227 int sd_do_command(SDState *sd, struct sd_request_s *req, |
|
1228 uint8_t *response) { |
|
1229 uint32_t last_status = sd->card_status; |
|
1230 sd_rsp_type_t rtype; |
|
1231 int rsplen; |
|
1232 |
|
1233 if (!bdrv_is_inserted(sd->bdrv) || !sd->enable) { |
|
1234 return 0; |
|
1235 } |
|
1236 |
|
1237 if (sd_req_crc_validate(req)) { |
|
1238 sd->card_status &= ~COM_CRC_ERROR; |
|
1239 return 0; |
|
1240 } |
|
1241 |
|
1242 sd->card_status &= ~CARD_STATUS_B; |
|
1243 sd_set_status(sd); |
|
1244 |
|
1245 if (last_status & CARD_IS_LOCKED) |
|
1246 if (((last_status & APP_CMD) && |
|
1247 req->cmd == 41) || |
|
1248 (!(last_status & APP_CMD) && |
|
1249 (sd_cmd_class[req->cmd] == 0 || |
|
1250 sd_cmd_class[req->cmd] == 7 || |
|
1251 req->cmd == 16 || req->cmd == 55))) { |
|
1252 sd->card_status |= ILLEGAL_COMMAND; |
|
1253 fprintf(stderr, "SD: Card is locked\n"); |
|
1254 return 0; |
|
1255 } |
|
1256 |
|
1257 if (last_status & APP_CMD) { |
|
1258 rtype = sd_app_command(sd, *req); |
|
1259 sd->card_status &= ~APP_CMD; |
|
1260 } else |
|
1261 rtype = sd_normal_command(sd, *req); |
|
1262 |
|
1263 sd->current_cmd = req->cmd; |
|
1264 |
|
1265 switch (rtype) { |
|
1266 case sd_r1: |
|
1267 case sd_r1b: |
|
1268 sd_response_r1_make(sd, response, last_status); |
|
1269 rsplen = 4; |
|
1270 break; |
|
1271 |
|
1272 case sd_r2_i: |
|
1273 memcpy(response, sd->cid, sizeof(sd->cid)); |
|
1274 rsplen = 16; |
|
1275 break; |
|
1276 |
|
1277 case sd_r2_s: |
|
1278 memcpy(response, sd->csd, sizeof(sd->csd)); |
|
1279 rsplen = 16; |
|
1280 break; |
|
1281 |
|
1282 case sd_r3: |
|
1283 sd_response_r3_make(sd, response); |
|
1284 rsplen = 4; |
|
1285 break; |
|
1286 |
|
1287 case sd_r6: |
|
1288 sd_response_r6_make(sd, response); |
|
1289 rsplen = 4; |
|
1290 break; |
|
1291 |
|
1292 case sd_r7: |
|
1293 sd_response_r7_make(sd, response); |
|
1294 rsplen = 4; |
|
1295 break; |
|
1296 |
|
1297 case sd_r0: |
|
1298 default: |
|
1299 rsplen = 0; |
|
1300 break; |
|
1301 } |
|
1302 |
|
1303 if (sd->card_status & ILLEGAL_COMMAND) |
|
1304 rsplen = 0; |
|
1305 |
|
1306 #ifdef DEBUG_SD |
|
1307 if (rsplen) { |
|
1308 int i; |
|
1309 DPRINTF("Response:"); |
|
1310 for (i = 0; i < rsplen; i++) |
|
1311 printf(" %02x", response[i]); |
|
1312 printf(" state %d\n", sd->state); |
|
1313 } else { |
|
1314 DPRINTF("No response %d\n", sd->state); |
|
1315 } |
|
1316 #endif |
|
1317 |
|
1318 return rsplen; |
|
1319 } |
|
1320 |
|
1321 /* No real need for 64 bit addresses here */ |
|
1322 static void sd_blk_read(SDState *sd, uint32_t addr, uint32_t len) |
|
1323 { |
|
1324 uint32_t end = addr + len; |
|
1325 |
|
1326 if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) == -1) { |
|
1327 fprintf(stderr, "sd_blk_read: read error on host side\n"); |
|
1328 return; |
|
1329 } |
|
1330 |
|
1331 if (end > (addr & ~511) + 512) { |
|
1332 memcpy(sd->data, sd->buf + (addr & 511), 512 - (addr & 511)); |
|
1333 |
|
1334 if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) == -1) { |
|
1335 fprintf(stderr, "sd_blk_read: read error on host side\n"); |
|
1336 return; |
|
1337 } |
|
1338 memcpy(sd->data + 512 - (addr & 511), sd->buf, end & 511); |
|
1339 } else |
|
1340 memcpy(sd->data, sd->buf + (addr & 511), len); |
|
1341 } |
|
1342 |
|
1343 static void sd_blk_write(SDState *sd, uint32_t addr, uint32_t len) |
|
1344 { |
|
1345 uint32_t end = addr + len; |
|
1346 |
|
1347 if ((addr & 511) || len < 512) |
|
1348 if (!sd->bdrv || bdrv_read(sd->bdrv, addr >> 9, sd->buf, 1) == -1) { |
|
1349 fprintf(stderr, "sd_blk_write: read error on host side\n"); |
|
1350 return; |
|
1351 } |
|
1352 |
|
1353 if (end > (addr & ~511) + 512) { |
|
1354 memcpy(sd->buf + (addr & 511), sd->data, 512 - (addr & 511)); |
|
1355 if (bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) == -1) { |
|
1356 fprintf(stderr, "sd_blk_write: write error on host side\n"); |
|
1357 return; |
|
1358 } |
|
1359 |
|
1360 if (bdrv_read(sd->bdrv, end >> 9, sd->buf, 1) == -1) { |
|
1361 fprintf(stderr, "sd_blk_write: read error on host side\n"); |
|
1362 return; |
|
1363 } |
|
1364 memcpy(sd->buf, sd->data + 512 - (addr & 511), end & 511); |
|
1365 if (bdrv_write(sd->bdrv, end >> 9, sd->buf, 1) == -1) |
|
1366 fprintf(stderr, "sd_blk_write: write error on host side\n"); |
|
1367 } else { |
|
1368 memcpy(sd->buf + (addr & 511), sd->data, len); |
|
1369 if (!sd->bdrv || bdrv_write(sd->bdrv, addr >> 9, sd->buf, 1) == -1) |
|
1370 fprintf(stderr, "sd_blk_write: write error on host side\n"); |
|
1371 } |
|
1372 } |
|
1373 |
|
1374 #define BLK_READ_BLOCK(a, len) sd_blk_read(sd, a, len) |
|
1375 #define BLK_WRITE_BLOCK(a, len) sd_blk_write(sd, a, len) |
|
1376 #define APP_READ_BLOCK(a, len) memset(sd->data, 0xec, len) |
|
1377 #define APP_WRITE_BLOCK(a, len) |
|
1378 |
|
1379 void sd_write_data(SDState *sd, uint8_t value) |
|
1380 { |
|
1381 int i; |
|
1382 |
|
1383 if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) |
|
1384 return; |
|
1385 |
|
1386 if (sd->state != sd_receivingdata_state) { |
|
1387 fprintf(stderr, "sd_write_data: not in Receiving-Data state\n"); |
|
1388 return; |
|
1389 } |
|
1390 |
|
1391 if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION)) |
|
1392 return; |
|
1393 |
|
1394 switch (sd->current_cmd) { |
|
1395 case 24: /* CMD24: WRITE_SINGLE_BLOCK */ |
|
1396 sd->data[sd->data_offset ++] = value; |
|
1397 if (sd->data_offset >= sd->blk_len) { |
|
1398 /* TODO: Check CRC before committing */ |
|
1399 sd->state = sd_programming_state; |
|
1400 BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
|
1401 sd->blk_written ++; |
|
1402 sd->csd[14] |= 0x40; |
|
1403 /* Bzzzzzzztt .... Operation complete. */ |
|
1404 sd->state = sd_transfer_state; |
|
1405 } |
|
1406 break; |
|
1407 |
|
1408 case 25: /* CMD25: WRITE_MULTIPLE_BLOCK */ |
|
1409 sd->data[sd->data_offset ++] = value; |
|
1410 if (sd->data_offset >= sd->blk_len) { |
|
1411 /* TODO: Check CRC before committing */ |
|
1412 sd->state = sd_programming_state; |
|
1413 BLK_WRITE_BLOCK(sd->data_start, sd->data_offset); |
|
1414 sd->blk_written ++; |
|
1415 sd->data_start += sd->blk_len; |
|
1416 sd->data_offset = 0; |
|
1417 if (sd->data_start + sd->blk_len > sd->size) { |
|
1418 sd->card_status |= ADDRESS_ERROR; |
|
1419 break; |
|
1420 } |
|
1421 if (sd_wp_addr(sd, sd->data_start)) { |
|
1422 sd->card_status |= WP_VIOLATION; |
|
1423 break; |
|
1424 } |
|
1425 sd->csd[14] |= 0x40; |
|
1426 |
|
1427 /* Bzzzzzzztt .... Operation complete. */ |
|
1428 sd->state = sd_receivingdata_state; |
|
1429 } |
|
1430 break; |
|
1431 |
|
1432 case 26: /* CMD26: PROGRAM_CID */ |
|
1433 sd->data[sd->data_offset ++] = value; |
|
1434 if (sd->data_offset >= sizeof(sd->cid)) { |
|
1435 /* TODO: Check CRC before committing */ |
|
1436 sd->state = sd_programming_state; |
|
1437 for (i = 0; i < sizeof(sd->cid); i ++) |
|
1438 if ((sd->cid[i] | 0x00) != sd->data[i]) |
|
1439 sd->card_status |= CID_CSD_OVERWRITE; |
|
1440 |
|
1441 if (!(sd->card_status & CID_CSD_OVERWRITE)) |
|
1442 for (i = 0; i < sizeof(sd->cid); i ++) { |
|
1443 sd->cid[i] |= 0x00; |
|
1444 sd->cid[i] &= sd->data[i]; |
|
1445 } |
|
1446 /* Bzzzzzzztt .... Operation complete. */ |
|
1447 sd->state = sd_transfer_state; |
|
1448 } |
|
1449 break; |
|
1450 |
|
1451 case 27: /* CMD27: PROGRAM_CSD */ |
|
1452 sd->data[sd->data_offset ++] = value; |
|
1453 if (sd->data_offset >= sizeof(sd->csd)) { |
|
1454 /* TODO: Check CRC before committing */ |
|
1455 sd->state = sd_programming_state; |
|
1456 for (i = 0; i < sizeof(sd->csd); i ++) |
|
1457 if ((sd->csd[i] | sd_csd_rw_mask[i]) != |
|
1458 (sd->data[i] | sd_csd_rw_mask[i])) |
|
1459 sd->card_status |= CID_CSD_OVERWRITE; |
|
1460 |
|
1461 /* Copy flag (OTP) & Permanent write protect */ |
|
1462 if (sd->csd[14] & ~sd->data[14] & 0x60) |
|
1463 sd->card_status |= CID_CSD_OVERWRITE; |
|
1464 |
|
1465 if (!(sd->card_status & CID_CSD_OVERWRITE)) |
|
1466 for (i = 0; i < sizeof(sd->csd); i ++) { |
|
1467 sd->csd[i] |= sd_csd_rw_mask[i]; |
|
1468 sd->csd[i] &= sd->data[i]; |
|
1469 } |
|
1470 /* Bzzzzzzztt .... Operation complete. */ |
|
1471 sd->state = sd_transfer_state; |
|
1472 } |
|
1473 break; |
|
1474 |
|
1475 case 42: /* CMD42: LOCK_UNLOCK */ |
|
1476 sd->data[sd->data_offset ++] = value; |
|
1477 if (sd->data_offset >= sd->blk_len) { |
|
1478 /* TODO: Check CRC before committing */ |
|
1479 sd->state = sd_programming_state; |
|
1480 sd_lock_command(sd); |
|
1481 /* Bzzzzzzztt .... Operation complete. */ |
|
1482 sd->state = sd_transfer_state; |
|
1483 } |
|
1484 break; |
|
1485 |
|
1486 case 56: /* CMD56: GEN_CMD */ |
|
1487 sd->data[sd->data_offset ++] = value; |
|
1488 if (sd->data_offset >= sd->blk_len) { |
|
1489 APP_WRITE_BLOCK(sd->data_start, sd->data_offset); |
|
1490 sd->state = sd_transfer_state; |
|
1491 } |
|
1492 break; |
|
1493 |
|
1494 default: |
|
1495 fprintf(stderr, "sd_write_data: unknown command\n"); |
|
1496 break; |
|
1497 } |
|
1498 } |
|
1499 |
|
1500 uint8_t sd_read_data(SDState *sd) |
|
1501 { |
|
1502 /* TODO: Append CRCs */ |
|
1503 uint8_t ret; |
|
1504 |
|
1505 if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) |
|
1506 return 0x00; |
|
1507 |
|
1508 if (sd->state != sd_sendingdata_state) { |
|
1509 fprintf(stderr, "sd_read_data: not in Sending-Data state\n"); |
|
1510 return 0x00; |
|
1511 } |
|
1512 |
|
1513 if (sd->card_status & (ADDRESS_ERROR | WP_VIOLATION)) |
|
1514 return 0x00; |
|
1515 |
|
1516 switch (sd->current_cmd) { |
|
1517 case 6: /* CMD6: SWITCH_FUNCTION */ |
|
1518 ret = sd->data[sd->data_offset ++]; |
|
1519 |
|
1520 if (sd->data_offset >= 64) |
|
1521 sd->state = sd_transfer_state; |
|
1522 break; |
|
1523 |
|
1524 case 9: /* CMD9: SEND_CSD */ |
|
1525 case 10: /* CMD10: SEND_CID */ |
|
1526 ret = sd->data[sd->data_offset ++]; |
|
1527 |
|
1528 if (sd->data_offset >= 16) |
|
1529 sd->state = sd_transfer_state; |
|
1530 break; |
|
1531 |
|
1532 case 11: /* CMD11: READ_DAT_UNTIL_STOP */ |
|
1533 if (sd->data_offset == 0) |
|
1534 BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
|
1535 ret = sd->data[sd->data_offset ++]; |
|
1536 |
|
1537 if (sd->data_offset >= sd->blk_len) { |
|
1538 sd->data_start += sd->blk_len; |
|
1539 sd->data_offset = 0; |
|
1540 if (sd->data_start + sd->blk_len > sd->size) { |
|
1541 sd->card_status |= ADDRESS_ERROR; |
|
1542 break; |
|
1543 } |
|
1544 } |
|
1545 break; |
|
1546 |
|
1547 case 13: /* ACMD13: SD_STATUS */ |
|
1548 ret = sd->sd_status[sd->data_offset ++]; |
|
1549 |
|
1550 if (sd->data_offset >= sizeof(sd->sd_status)) |
|
1551 sd->state = sd_transfer_state; |
|
1552 break; |
|
1553 |
|
1554 case 17: /* CMD17: READ_SINGLE_BLOCK */ |
|
1555 if (sd->data_offset == 0) |
|
1556 BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
|
1557 ret = sd->data[sd->data_offset ++]; |
|
1558 |
|
1559 if (sd->data_offset >= sd->blk_len) |
|
1560 sd->state = sd_transfer_state; |
|
1561 break; |
|
1562 |
|
1563 case 18: /* CMD18: READ_MULTIPLE_BLOCK */ |
|
1564 if (sd->data_offset == 0) |
|
1565 BLK_READ_BLOCK(sd->data_start, sd->blk_len); |
|
1566 ret = sd->data[sd->data_offset ++]; |
|
1567 |
|
1568 if (sd->data_offset >= sd->blk_len) { |
|
1569 sd->data_start += sd->blk_len; |
|
1570 sd->data_offset = 0; |
|
1571 if (sd->data_start + sd->blk_len > sd->size) { |
|
1572 sd->card_status |= ADDRESS_ERROR; |
|
1573 break; |
|
1574 } |
|
1575 } |
|
1576 break; |
|
1577 |
|
1578 case 22: /* ACMD22: SEND_NUM_WR_BLOCKS */ |
|
1579 ret = sd->data[sd->data_offset ++]; |
|
1580 |
|
1581 if (sd->data_offset >= 4) |
|
1582 sd->state = sd_transfer_state; |
|
1583 break; |
|
1584 |
|
1585 case 30: /* CMD30: SEND_WRITE_PROT */ |
|
1586 ret = sd->data[sd->data_offset ++]; |
|
1587 |
|
1588 if (sd->data_offset >= 4) |
|
1589 sd->state = sd_transfer_state; |
|
1590 break; |
|
1591 |
|
1592 case 51: /* ACMD51: SEND_SCR */ |
|
1593 ret = sd->scr[sd->data_offset ++]; |
|
1594 |
|
1595 if (sd->data_offset >= sizeof(sd->scr)) |
|
1596 sd->state = sd_transfer_state; |
|
1597 break; |
|
1598 |
|
1599 case 56: /* CMD56: GEN_CMD */ |
|
1600 if (sd->data_offset == 0) |
|
1601 APP_READ_BLOCK(sd->data_start, sd->blk_len); |
|
1602 ret = sd->data[sd->data_offset ++]; |
|
1603 |
|
1604 if (sd->data_offset >= sd->blk_len) |
|
1605 sd->state = sd_transfer_state; |
|
1606 break; |
|
1607 |
|
1608 default: |
|
1609 fprintf(stderr, "sd_read_data: unknown command\n"); |
|
1610 return 0x00; |
|
1611 } |
|
1612 |
|
1613 return ret; |
|
1614 } |
|
1615 |
|
1616 int sd_data_ready(SDState *sd) |
|
1617 { |
|
1618 return sd->state == sd_sendingdata_state; |
|
1619 } |
|
1620 |
|
1621 void sd_enable(SDState *sd, int enable) |
|
1622 { |
|
1623 sd->enable = enable; |
|
1624 } |