1 | #include <freebsd/machine/rtems-bsd-config.h> |
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2 | |
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3 | /* |
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4 | * Copyright (c) 1997, 1998, 1999 |
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5 | * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. |
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6 | * |
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7 | * Redistribution and use in source and binary forms, with or without |
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8 | * modification, are permitted provided that the following conditions |
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9 | * are met: |
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10 | * 1. Redistributions of source code must retain the above copyright |
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11 | * notice, this list of conditions and the following disclaimer. |
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12 | * 2. Redistributions in binary form must reproduce the above copyright |
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13 | * notice, this list of conditions and the following disclaimer in the |
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14 | * documentation and/or other materials provided with the distribution. |
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15 | * 3. All advertising materials mentioning features or use of this software |
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16 | * must display the following acknowledgement: |
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17 | * This product includes software developed by Bill Paul. |
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18 | * 4. Neither the name of the author nor the names of any co-contributors |
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19 | * may be used to endorse or promote products derived from this software |
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20 | * without specific prior written permission. |
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21 | * |
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22 | * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND |
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23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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25 | * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD |
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26 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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30 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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31 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
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32 | * THE POSSIBILITY OF SUCH DAMAGE. |
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33 | */ |
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34 | |
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35 | #include <freebsd/sys/cdefs.h> |
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36 | __FBSDID("$FreeBSD$"); |
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37 | |
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38 | /* |
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39 | * Pseudo-driver for media selection on the Lite-On PNIC 82c168 |
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40 | * chip. The NWAY support on this chip is horribly broken, so we |
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41 | * only support manual mode selection. This is lame, but getting |
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42 | * NWAY to work right is amazingly difficult. |
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43 | */ |
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44 | |
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45 | #include <freebsd/sys/param.h> |
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46 | #include <freebsd/sys/systm.h> |
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47 | #include <freebsd/sys/kernel.h> |
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48 | #include <freebsd/sys/socket.h> |
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49 | #include <freebsd/sys/errno.h> |
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50 | #include <freebsd/sys/lock.h> |
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51 | #include <freebsd/sys/module.h> |
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52 | #include <freebsd/sys/mutex.h> |
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53 | #include <freebsd/sys/bus.h> |
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54 | |
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55 | #include <freebsd/net/if.h> |
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56 | #include <freebsd/net/if_arp.h> |
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57 | #include <freebsd/net/if_media.h> |
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58 | |
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59 | #include <freebsd/dev/mii/mii.h> |
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60 | #include <freebsd/dev/mii/miivar.h> |
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61 | #include <freebsd/local/miidevs.h> |
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62 | |
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63 | #include <freebsd/machine/bus.h> |
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64 | #include <freebsd/machine/resource.h> |
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65 | #include <freebsd/sys/bus.h> |
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66 | |
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67 | #include <freebsd/dev/dc/if_dcreg.h> |
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68 | |
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69 | #include <freebsd/local/miibus_if.h> |
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70 | |
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71 | #define DC_SETBIT(sc, reg, x) \ |
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72 | CSR_WRITE_4(sc, reg, \ |
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73 | CSR_READ_4(sc, reg) | x) |
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74 | |
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75 | #define DC_CLRBIT(sc, reg, x) \ |
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76 | CSR_WRITE_4(sc, reg, \ |
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77 | CSR_READ_4(sc, reg) & ~x) |
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78 | |
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79 | static int pnphy_probe(device_t); |
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80 | static int pnphy_attach(device_t); |
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81 | |
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82 | static device_method_t pnphy_methods[] = { |
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83 | /* device interface */ |
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84 | DEVMETHOD(device_probe, pnphy_probe), |
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85 | DEVMETHOD(device_attach, pnphy_attach), |
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86 | DEVMETHOD(device_detach, mii_phy_detach), |
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87 | DEVMETHOD(device_shutdown, bus_generic_shutdown), |
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88 | { 0, 0 } |
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89 | }; |
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90 | |
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91 | static devclass_t pnphy_devclass; |
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92 | |
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93 | static driver_t pnphy_driver = { |
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94 | "pnphy", |
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95 | pnphy_methods, |
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96 | sizeof(struct mii_softc) |
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97 | }; |
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98 | |
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99 | DRIVER_MODULE(pnphy, miibus, pnphy_driver, pnphy_devclass, 0, 0); |
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100 | |
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101 | static int pnphy_service(struct mii_softc *, struct mii_data *, int); |
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102 | static void pnphy_status(struct mii_softc *); |
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103 | |
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104 | static int |
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105 | pnphy_probe(device_t dev) |
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106 | { |
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107 | struct mii_attach_args *ma; |
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108 | |
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109 | ma = device_get_ivars(dev); |
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110 | |
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111 | /* |
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112 | * The dc driver will report the 82c168 vendor and device |
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113 | * ID to let us know that it wants us to attach. |
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114 | */ |
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115 | if (ma->mii_id1 != DC_VENDORID_LO || |
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116 | ma->mii_id2 != DC_DEVICEID_82C168) |
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117 | return (ENXIO); |
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118 | |
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119 | device_set_desc(dev, "PNIC 82c168 media interface"); |
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120 | |
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121 | return (BUS_PROBE_DEFAULT); |
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122 | } |
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123 | |
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124 | static int |
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125 | pnphy_attach(device_t dev) |
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126 | { |
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127 | struct mii_softc *sc; |
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128 | struct mii_attach_args *ma; |
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129 | struct mii_data *mii; |
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130 | |
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131 | sc = device_get_softc(dev); |
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132 | ma = device_get_ivars(dev); |
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133 | sc->mii_dev = device_get_parent(dev); |
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134 | mii = ma->mii_data; |
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135 | LIST_INSERT_HEAD(&mii->mii_phys, sc, mii_list); |
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136 | |
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137 | sc->mii_flags = miibus_get_flags(dev); |
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138 | sc->mii_inst = mii->mii_instance++; |
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139 | sc->mii_phy = ma->mii_phyno; |
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140 | sc->mii_service = pnphy_service; |
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141 | sc->mii_pdata = mii; |
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142 | |
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143 | /* |
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144 | * Apparently, we can neither isolate nor do loopback. |
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145 | */ |
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146 | sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP; |
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147 | |
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148 | sc->mii_capabilities = |
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149 | BMSR_100TXFDX | BMSR_100TXHDX | BMSR_10TFDX | BMSR_10THDX; |
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150 | sc->mii_capabilities &= ma->mii_capmask; |
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151 | device_printf(dev, " "); |
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152 | mii_phy_add_media(sc); |
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153 | printf("\n"); |
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154 | |
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155 | MIIBUS_MEDIAINIT(sc->mii_dev); |
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156 | return (0); |
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157 | } |
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158 | |
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159 | static int |
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160 | pnphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
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161 | { |
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162 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
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163 | |
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164 | switch (cmd) { |
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165 | case MII_POLLSTAT: |
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166 | break; |
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167 | |
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168 | case MII_MEDIACHG: |
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169 | /* |
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170 | * If the interface is not up, don't do anything. |
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171 | */ |
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172 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
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173 | break; |
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174 | |
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175 | switch (IFM_SUBTYPE(ife->ifm_media)) { |
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176 | case IFM_AUTO: |
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177 | /* NWAY is busted on this chip */ |
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178 | case IFM_100_T4: |
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179 | /* |
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180 | * XXX Not supported as a manual setting right now. |
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181 | */ |
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182 | return (EINVAL); |
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183 | case IFM_100_TX: |
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184 | mii->mii_media_active = IFM_ETHER | IFM_100_TX; |
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185 | if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) |
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186 | mii->mii_media_active |= IFM_FDX; |
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187 | MIIBUS_STATCHG(sc->mii_dev); |
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188 | return (0); |
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189 | case IFM_10_T: |
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190 | mii->mii_media_active = IFM_ETHER | IFM_10_T; |
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191 | if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) |
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192 | mii->mii_media_active |= IFM_FDX; |
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193 | MIIBUS_STATCHG(sc->mii_dev); |
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194 | return (0); |
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195 | default: |
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196 | return (EINVAL); |
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197 | } |
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198 | break; |
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199 | |
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200 | case MII_TICK: |
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201 | /* |
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202 | * Is the interface even up? |
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203 | */ |
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204 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
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205 | return (0); |
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206 | |
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207 | break; |
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208 | } |
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209 | |
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210 | /* Update the media status. */ |
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211 | pnphy_status(sc); |
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212 | |
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213 | /* Callback if something changed. */ |
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214 | mii_phy_update(sc, cmd); |
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215 | return (0); |
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216 | } |
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217 | |
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218 | static void |
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219 | pnphy_status(struct mii_softc *sc) |
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220 | { |
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221 | struct mii_data *mii = sc->mii_pdata; |
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222 | int reg; |
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223 | struct dc_softc *dc_sc; |
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224 | |
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225 | dc_sc = mii->mii_ifp->if_softc; |
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226 | |
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227 | mii->mii_media_status = IFM_AVALID; |
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228 | mii->mii_media_active = IFM_ETHER; |
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229 | |
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230 | reg = CSR_READ_4(dc_sc, DC_ISR); |
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231 | |
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232 | if (!(reg & DC_ISR_LINKFAIL)) |
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233 | mii->mii_media_status |= IFM_ACTIVE; |
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234 | |
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235 | if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) |
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236 | mii->mii_media_active |= IFM_10_T; |
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237 | else |
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238 | mii->mii_media_active |= IFM_100_TX; |
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239 | if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) |
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240 | mii->mii_media_active |= IFM_FDX; |
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241 | else |
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242 | mii->mii_media_active |= IFM_HDX; |
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243 | } |
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