1 | /* $Id$ */ |
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2 | |
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3 | /* Simple (default) implementation for SIOCGIFMEDIA/SIOCSIFMEDIA |
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4 | * to be used by ethernet drivers [from their ioctl]. |
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5 | * |
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6 | * KERNEL PART (support for drivers) |
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7 | * |
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8 | * NOTE: This much simpler than the BSD ifmedia API |
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9 | */ |
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10 | |
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11 | /* Author: Till Straumann, <straumanatslacdotstandorddotedu>, 2005 */ |
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12 | |
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13 | /* include first to avoid 'malloc' clash with rtems_bsdnet_malloc() hack */ |
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14 | |
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15 | #include <rtems.h> |
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16 | #include <rtems/rtems_bsdnet.h> |
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17 | #include <sys/mbuf.h> |
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18 | #include <sys/socket.h> |
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19 | #include <sys/sockio.h> |
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20 | #include <net/ethernet.h> |
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21 | #include <net/if.h> |
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22 | |
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23 | #ifndef __KERNEL__ |
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24 | #define __KERNEL__ |
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25 | #endif |
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26 | |
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27 | #include <rtems/rtems_mii_ioctl.h> |
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28 | |
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29 | #include <sys/errno.h> |
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30 | |
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31 | |
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32 | #define DEBUG |
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33 | |
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34 | |
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35 | #ifndef MII_1000TCR |
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36 | #define MII_1000TCR MII_100T2CR |
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37 | #endif |
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38 | |
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39 | #ifndef MII_1000TSR |
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40 | #define MII_1000TSR MII_100T2SR |
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41 | #endif |
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42 | |
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43 | int |
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44 | rtems_mii_ioctl (struct rtems_mdio_info *info, void *uarg, int cmd, |
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45 | int *media) |
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46 | { |
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47 | uint32_t bmcr, bmsr, aner, bmcr2 = 0, bmsr2 = 0, anar, lpar; |
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48 | int phy = IFM_INST (*media); |
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49 | unsigned tmp; |
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50 | int subtype = 0, options = 0; |
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51 | |
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52 | switch (cmd) { |
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53 | default: |
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54 | return EINVAL; |
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55 | |
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56 | #ifdef DEBUG |
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57 | case 0: |
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58 | #endif |
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59 | case SIOCGIFMEDIA: |
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60 | if (info->mdio_r (phy, uarg, MII_BMCR, &bmcr)) |
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61 | return EINVAL; |
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62 | if (info->mdio_r (phy, uarg, MII_BMSR, &bmsr)) |
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63 | return EINVAL; |
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64 | if (info->mdio_r (phy, uarg, MII_ANER, &aner)) |
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65 | return EINVAL; |
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66 | if (info->has_gmii) { |
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67 | if (info->mdio_r (phy, uarg, MII_1000TCR, &bmcr2)) |
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68 | return EINVAL; |
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69 | if (info->mdio_r (phy, uarg, MII_1000TSR, &bmsr2)) |
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70 | return EINVAL; |
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71 | } |
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72 | |
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73 | /* link status */ |
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74 | if (BMSR_LINK & bmsr) |
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75 | options |= IFM_LINK_OK; |
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76 | |
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77 | /* do we have autonegotiation disabled ? */ |
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78 | if (!(BMCR_AUTOEN & bmcr)) { |
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79 | options |= IFM_ANEG_DIS; |
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80 | |
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81 | /* duplex is enforced */ |
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82 | options |= BMCR_FDX & bmcr ? IFM_FDX : IFM_HDX; |
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83 | |
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84 | /* determine speed */ |
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85 | switch (BMCR_SPEED (bmcr)) { |
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86 | case BMCR_S10: |
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87 | subtype = IFM_10_T; |
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88 | break; |
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89 | case BMCR_S100: |
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90 | subtype = IFM_100_TX; |
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91 | break; |
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92 | case BMCR_S1000: |
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93 | subtype = IFM_1000_T; |
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94 | break; |
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95 | default: |
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96 | return ENOTSUP; /* ?? */ |
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97 | } |
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98 | } else if (!(BMSR_LINK & bmsr) || !(BMSR_ACOMP & bmsr)) { |
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99 | subtype = IFM_NONE; |
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100 | } else { |
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101 | /* everything ok on our side */ |
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102 | |
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103 | if ( ! (ANER_LPAN & aner) ) { |
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104 | /* Link partner doesn't autonegotiate --> our settings are the |
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105 | * result of 'parallel detect' (in particular: duplex status is HALF |
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106 | * according to the standard!). |
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107 | * Let them know that something's fishy... |
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108 | */ |
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109 | options |= IFM_ANEG_DIS; |
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110 | } |
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111 | |
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112 | tmp = ((bmcr2 >> 2) & bmsr2) & (GTSR_LP_1000THDX | GTSR_LP_1000TFDX); |
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113 | if (tmp) { |
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114 | if (GTSR_LP_1000TFDX & tmp) |
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115 | options |= IFM_FDX; |
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116 | subtype = IFM_1000_T; |
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117 | } else { |
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118 | if (info->mdio_r (phy, uarg, MII_ANAR, &anar)) |
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119 | return EINVAL; |
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120 | if (info->mdio_r (phy, uarg, MII_ANLPAR, &lpar)) |
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121 | return EINVAL; |
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122 | if (ANLPAR_ACK & lpar) { |
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123 | /* this is a negotiated link; otherwise we merely detect the partner's ability */ |
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124 | } |
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125 | tmp = anar & lpar; |
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126 | if (ANLPAR_TX_FD & tmp) { |
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127 | options |= IFM_FDX; |
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128 | subtype = IFM_100_TX; |
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129 | } else if (ANLPAR_T4 & tmp) { |
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130 | subtype = IFM_100_T4; |
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131 | } else if (ANLPAR_TX & tmp) { |
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132 | subtype = IFM_100_TX; |
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133 | } else if (ANLPAR_10_FD & tmp) { |
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134 | options |= IFM_FDX; |
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135 | subtype = IFM_10_T; |
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136 | } else { |
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137 | subtype = IFM_10_T; |
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138 | } |
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139 | } |
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140 | } |
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141 | |
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142 | *media = IFM_MAKEWORD (IFM_ETHER, subtype, options, phy); |
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143 | |
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144 | break; |
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145 | |
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146 | #ifdef DEBUG |
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147 | case 1: |
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148 | #endif |
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149 | case SIOCSIFMEDIA: |
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150 | if (IFM_ETHER != IFM_TYPE (*media)) |
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151 | return EINVAL; |
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152 | |
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153 | if (info->mdio_r (phy, uarg, MII_BMSR, &bmsr)) |
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154 | return EINVAL; |
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155 | |
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156 | tmp = (IFM_FDX & *media); |
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157 | |
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158 | switch (IFM_SUBTYPE (*media)) { |
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159 | default: |
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160 | return ENOTSUP; |
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161 | |
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162 | case IFM_AUTO: |
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163 | bmcr = BMCR_AUTOEN | BMCR_STARTNEG; |
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164 | tmp = 0; |
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165 | break; |
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166 | |
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167 | case IFM_1000_T: |
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168 | if (!info->has_gmii) |
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169 | return ENOTSUP; |
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170 | |
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171 | if (info->mdio_r (phy, uarg, MII_EXTSR, &bmsr2)) |
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172 | return EINVAL; |
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173 | |
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174 | if (!(bmsr2 & (tmp ? EXTSR_1000TFDX : EXTSR_1000THDX))) |
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175 | return EOPNOTSUPP; |
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176 | bmcr = BMCR_S1000; |
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177 | break; |
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178 | |
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179 | case IFM_100_TX: |
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180 | if (!(bmsr & (tmp ? BMSR_100TXFDX : BMSR_100TXHDX))) |
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181 | return EOPNOTSUPP; |
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182 | bmcr = BMCR_S100; |
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183 | break; |
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184 | |
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185 | case IFM_10_T: |
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186 | if (!(bmsr & (tmp ? BMSR_10TFDX : BMSR_10THDX))) |
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187 | return EOPNOTSUPP; |
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188 | bmcr = BMCR_S10; |
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189 | break; |
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190 | } |
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191 | |
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192 | if (tmp) |
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193 | bmcr |= BMCR_FDX; |
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194 | |
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195 | if (info->mdio_w (phy, uarg, MII_BMCR, bmcr)) |
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196 | return EINVAL; |
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197 | |
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198 | /* TODO: should we adapt advertised capabilites ? */ |
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199 | |
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200 | break; |
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201 | } |
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202 | |
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203 | return 0; |
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204 | } |
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