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Rev | Author | Line No. | Line |
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422 | giacomo | 1 | |
2 | /* |
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3 | Copyright 2003 Red Hat, Inc. All rights reserved. |
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4 | Copyright 2003 Jeff Garzik |
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5 | |||
6 | The contents of this file are subject to the Open |
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7 | Software License version 1.1 that can be found at |
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8 | http://www.opensource.org/licenses/osl-1.1.txt and is included herein |
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9 | by reference. |
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10 | |||
11 | Alternatively, the contents of this file may be used under the terms |
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12 | of the GNU General Public License version 2 (the "GPL") as distributed |
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13 | in the kernel source COPYING file, in which case the provisions of |
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14 | the GPL are applicable instead of the above. If you wish to allow |
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15 | the use of your version of this file only under the terms of the |
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16 | GPL and not to allow others to use your version of this file under |
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17 | the OSL, indicate your decision by deleting the provisions above and |
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18 | replace them with the notice and other provisions required by the GPL. |
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19 | If you do not delete the provisions above, a recipient may use your |
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20 | version of this file under either the OSL or the GPL. |
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21 | |||
22 | */ |
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23 | |||
24 | #ifndef __LINUX_ATA_H__ |
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25 | #define __LINUX_ATA_H__ |
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26 | |||
27 | /* defines only for the constants which don't work well as enums */ |
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28 | #define ATA_DMA_BOUNDARY 0xffffUL |
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29 | #define ATA_DMA_MASK 0xffffffffULL |
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30 | |||
31 | enum { |
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32 | /* various global constants */ |
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33 | ATA_MAX_DEVICES = 2, /* per bus/port */ |
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34 | ATA_MAX_PRD = 256, /* we could make these 256/256 */ |
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35 | ATA_SECT_SIZE = 512, |
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36 | ATA_SECT_SIZE_MASK = (ATA_SECT_SIZE - 1), |
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37 | ATA_SECT_DWORDS = ATA_SECT_SIZE / sizeof(u32), |
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38 | |||
39 | ATA_ID_WORDS = 256, |
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40 | ATA_ID_PROD_OFS = 27, |
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41 | ATA_ID_SERNO_OFS = 10, |
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42 | ATA_ID_MAJOR_VER = 80, |
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43 | ATA_ID_PIO_MODES = 64, |
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44 | ATA_ID_UDMA_MODES = 88, |
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45 | ATA_ID_PIO4 = (1 << 1), |
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46 | |||
47 | ATA_PCI_CTL_OFS = 2, |
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48 | ATA_SERNO_LEN = 20, |
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49 | ATA_UDMA0 = (1 << 0), |
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50 | ATA_UDMA1 = ATA_UDMA0 | (1 << 1), |
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51 | ATA_UDMA2 = ATA_UDMA1 | (1 << 2), |
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52 | ATA_UDMA3 = ATA_UDMA2 | (1 << 3), |
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53 | ATA_UDMA4 = ATA_UDMA3 | (1 << 4), |
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54 | ATA_UDMA5 = ATA_UDMA4 | (1 << 5), |
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55 | ATA_UDMA6 = ATA_UDMA5 | (1 << 6), |
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56 | ATA_UDMA7 = ATA_UDMA6 | (1 << 7), |
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57 | /* ATA_UDMA7 is just for completeness... doesn't exist (yet?). */ |
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58 | |||
59 | ATA_UDMA_MASK_40C = ATA_UDMA2, /* udma0-2 */ |
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60 | |||
61 | /* DMA-related */ |
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62 | ATA_PRD_SZ = 8, |
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63 | ATA_PRD_TBL_SZ = (ATA_MAX_PRD * ATA_PRD_SZ), |
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64 | ATA_PRD_EOT = (1 << 31), /* end-of-table flag */ |
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65 | |||
66 | ATA_DMA_TABLE_OFS = 4, |
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67 | ATA_DMA_STATUS = 2, |
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68 | ATA_DMA_CMD = 0, |
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69 | ATA_DMA_WR = (1 << 3), |
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70 | ATA_DMA_START = (1 << 0), |
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71 | ATA_DMA_INTR = (1 << 2), |
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72 | ATA_DMA_ERR = (1 << 1), |
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73 | ATA_DMA_ACTIVE = (1 << 0), |
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74 | |||
75 | /* bits in ATA command block registers */ |
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76 | ATA_HOB = (1 << 7), /* LBA48 selector */ |
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77 | ATA_NIEN = (1 << 1), /* disable-irq flag */ |
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78 | ATA_LBA = (1 << 6), /* LBA28 selector */ |
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79 | ATA_DEV1 = (1 << 4), /* Select Device 1 (slave) */ |
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80 | ATA_BUSY = (1 << 7), /* BSY status bit */ |
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81 | ATA_DEVICE_OBS = (1 << 7) | (1 << 5), /* obs bits in dev reg */ |
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82 | ATA_DEVCTL_OBS = (1 << 3), /* obsolete bit in devctl reg */ |
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83 | ATA_DRQ = (1 << 3), /* data request i/o */ |
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84 | ATA_ERR = (1 << 0), /* have an error */ |
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85 | ATA_SRST = (1 << 2), /* software reset */ |
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86 | ATA_ABORTED = (1 << 2), /* command aborted */ |
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87 | |||
88 | /* ATA command block registers */ |
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89 | ATA_REG_DATA = 0x00, |
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90 | ATA_REG_ERR = 0x01, |
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91 | ATA_REG_NSECT = 0x02, |
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92 | ATA_REG_LBAL = 0x03, |
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93 | ATA_REG_LBAM = 0x04, |
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94 | ATA_REG_LBAH = 0x05, |
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95 | ATA_REG_DEVICE = 0x06, |
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96 | ATA_REG_STATUS = 0x07, |
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97 | |||
98 | ATA_REG_FEATURE = ATA_REG_ERR, /* and their aliases */ |
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99 | ATA_REG_CMD = ATA_REG_STATUS, |
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100 | ATA_REG_BYTEL = ATA_REG_LBAM, |
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101 | ATA_REG_BYTEH = ATA_REG_LBAH, |
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102 | ATA_REG_DEVSEL = ATA_REG_DEVICE, |
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103 | ATA_REG_IRQ = ATA_REG_NSECT, |
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104 | |||
105 | /* ATA taskfile protocols */ |
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106 | ATA_PROT_UNKNOWN = 0, |
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107 | ATA_PROT_NODATA = 1, |
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108 | ATA_PROT_PIO_READ = 2, |
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109 | ATA_PROT_PIO_WRITE = 3, |
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110 | ATA_PROT_DMA_READ = 4, |
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111 | ATA_PROT_DMA_WRITE = 5, |
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112 | ATA_PROT_ATAPI = 6, |
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113 | ATA_PROT_ATAPI_DMA = 7, |
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114 | |||
115 | /* ATA device commands */ |
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116 | ATA_CMD_EDD = 0x90, /* execute device diagnostic */ |
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117 | ATA_CMD_ID_ATA = 0xEC, |
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118 | ATA_CMD_ID_ATAPI = 0xA1, |
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119 | ATA_CMD_READ = 0xC8, |
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120 | ATA_CMD_READ_EXT = 0x25, |
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121 | ATA_CMD_WRITE = 0xCA, |
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122 | ATA_CMD_WRITE_EXT = 0x35, |
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123 | ATA_CMD_PIO_READ = 0x20, |
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124 | ATA_CMD_PIO_READ_EXT = 0x24, |
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125 | ATA_CMD_PIO_WRITE = 0x30, |
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126 | ATA_CMD_PIO_WRITE_EXT = 0x34, |
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127 | ATA_CMD_SET_FEATURES = 0xEF, |
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128 | ATA_CMD_PACKET = 0xA0, |
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129 | |||
130 | /* SETFEATURES stuff */ |
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131 | SETFEATURES_XFER = 0x03, |
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132 | XFER_UDMA_7 = 0x47, |
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133 | XFER_UDMA_6 = 0x46, |
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134 | XFER_UDMA_5 = 0x45, |
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135 | XFER_UDMA_4 = 0x44, |
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136 | XFER_UDMA_3 = 0x43, |
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137 | XFER_UDMA_2 = 0x42, |
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138 | XFER_UDMA_1 = 0x41, |
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139 | XFER_UDMA_0 = 0x40, |
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140 | XFER_PIO_4 = 0x0C, |
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141 | XFER_PIO_3 = 0x0B, |
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142 | |||
143 | /* ATAPI stuff */ |
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144 | ATAPI_PKT_DMA = (1 << 0), |
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145 | |||
146 | /* cable types */ |
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147 | ATA_CBL_NONE = 0, |
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148 | ATA_CBL_PATA40 = 1, |
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149 | ATA_CBL_PATA80 = 2, |
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150 | ATA_CBL_PATA_UNK = 3, |
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151 | ATA_CBL_SATA = 4, |
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152 | |||
153 | /* SATA Status and Control Registers */ |
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154 | SCR_STATUS = 0, |
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155 | SCR_ERROR = 1, |
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156 | SCR_CONTROL = 2, |
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157 | SCR_ACTIVE = 3, |
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158 | SCR_NOTIFICATION = 4, |
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159 | }; |
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160 | |||
161 | /* core structures */ |
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162 | struct ata_prd { |
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163 | u32 addr; |
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164 | u32 flags_len; |
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165 | } __attribute__((packed)); |
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166 | |||
167 | #define ata_id_is_ata(dev) (((dev)->id[0] & (1 << 15)) == 0) |
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168 | #define ata_id_has_lba48(dev) ((dev)->id[83] & (1 << 10)) |
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169 | #define ata_id_has_lba(dev) ((dev)->id[49] & (1 << 8)) |
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170 | #define ata_id_has_dma(dev) ((dev)->id[49] & (1 << 9)) |
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171 | #define ata_id_u32(dev,n) \ |
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172 | (((u32) (dev)->id[(n) + 1] << 16) | ((u32) (dev)->id[(n)])) |
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173 | #define ata_id_u64(dev,n) \ |
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174 | ( ((u64) dev->id[(n) + 3] << 48) | \ |
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175 | ((u64) dev->id[(n) + 2] << 32) | \ |
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176 | ((u64) dev->id[(n) + 1] << 16) | \ |
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177 | ((u64) dev->id[(n) + 0]) ) |
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178 | |||
179 | #endif /* __LINUX_ATA_H__ */ |