Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | |
| 3 | mii.c: MII interface library |
| 4 | |
| 5 | Maintained by Jeff Garzik <jgarzik@pobox.com> |
| 6 | Copyright 2001,2002 Jeff Garzik |
| 7 | |
| 8 | Various code came from myson803.c and other files by |
| 9 | Donald Becker. Copyright: |
| 10 | |
| 11 | Written 1998-2002 by Donald Becker. |
| 12 | |
| 13 | This software may be used and distributed according |
| 14 | to the terms of the GNU General Public License (GPL), |
| 15 | incorporated herein by reference. Drivers based on |
| 16 | or derived from this code fall under the GPL and must |
| 17 | retain the authorship, copyright and license notice. |
| 18 | This file is not a complete program and may only be |
| 19 | used when the entire operating system is licensed |
| 20 | under the GPL. |
| 21 | |
| 22 | The author may be reached as becker@scyld.com, or C/O |
| 23 | Scyld Computing Corporation |
| 24 | 410 Severn Ave., Suite 210 |
| 25 | Annapolis MD 21403 |
| 26 | |
| 27 | |
| 28 | */ |
| 29 | |
| 30 | #include <linux/kernel.h> |
| 31 | #include <linux/module.h> |
| 32 | #include <linux/netdevice.h> |
| 33 | #include <linux/ethtool.h> |
Ben Hutchings | 5974700 | 2009-04-29 08:34:44 +0000 | [diff] [blame] | 34 | #include <linux/mdio.h> |
| 35 | |
| 36 | static u32 mii_get_an(struct mii_if_info *mii, u16 addr) |
| 37 | { |
| 38 | u32 result = 0; |
| 39 | int advert; |
| 40 | |
| 41 | advert = mii->mdio_read(mii->dev, mii->phy_id, addr); |
| 42 | if (advert & LPA_LPACK) |
| 43 | result |= ADVERTISED_Autoneg; |
| 44 | if (advert & ADVERTISE_10HALF) |
| 45 | result |= ADVERTISED_10baseT_Half; |
| 46 | if (advert & ADVERTISE_10FULL) |
| 47 | result |= ADVERTISED_10baseT_Full; |
| 48 | if (advert & ADVERTISE_100HALF) |
| 49 | result |= ADVERTISED_100baseT_Half; |
| 50 | if (advert & ADVERTISE_100FULL) |
| 51 | result |= ADVERTISED_100baseT_Full; |
| 52 | |
| 53 | return result; |
| 54 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Randy Dunlap | 32684ec | 2007-04-06 11:08:24 -0700 | [diff] [blame] | 56 | /** |
| 57 | * mii_ethtool_gset - get settings that are specified in @ecmd |
| 58 | * @mii: MII interface |
| 59 | * @ecmd: requested ethtool_cmd |
| 60 | * |
David Decotigny | 8ae6dac | 2011-04-27 18:32:38 +0000 | [diff] [blame] | 61 | * The @ecmd parameter is expected to have been cleared before calling |
| 62 | * mii_ethtool_gset(). |
| 63 | * |
Randy Dunlap | 32684ec | 2007-04-06 11:08:24 -0700 | [diff] [blame] | 64 | * Returns 0 for success, negative on error. |
| 65 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 66 | int mii_ethtool_gset(struct mii_if_info *mii, struct ethtool_cmd *ecmd) |
| 67 | { |
| 68 | struct net_device *dev = mii->dev; |
Ben Hutchings | 5974700 | 2009-04-29 08:34:44 +0000 | [diff] [blame] | 69 | u16 bmcr, bmsr, ctrl1000 = 0, stat1000 = 0; |
| 70 | u32 nego; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 71 | |
| 72 | ecmd->supported = |
| 73 | (SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full | |
| 74 | SUPPORTED_100baseT_Half | SUPPORTED_100baseT_Full | |
| 75 | SUPPORTED_Autoneg | SUPPORTED_TP | SUPPORTED_MII); |
| 76 | if (mii->supports_gmii) |
| 77 | ecmd->supported |= SUPPORTED_1000baseT_Half | |
| 78 | SUPPORTED_1000baseT_Full; |
| 79 | |
| 80 | /* only supports twisted-pair */ |
| 81 | ecmd->port = PORT_MII; |
| 82 | |
| 83 | /* only supports internal transceiver */ |
| 84 | ecmd->transceiver = XCVR_INTERNAL; |
| 85 | |
| 86 | /* this isn't fully supported at higher layers */ |
| 87 | ecmd->phy_address = mii->phy_id; |
Ben Hutchings | 5974700 | 2009-04-29 08:34:44 +0000 | [diff] [blame] | 88 | ecmd->mdio_support = MDIO_SUPPORTS_C22; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 89 | |
| 90 | ecmd->advertising = ADVERTISED_TP | ADVERTISED_MII; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 91 | |
| 92 | bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); |
Ben Hutchings | 5974700 | 2009-04-29 08:34:44 +0000 | [diff] [blame] | 93 | bmsr = mii->mdio_read(dev, mii->phy_id, MII_BMSR); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | if (mii->supports_gmii) { |
Ben Hutchings | 5974700 | 2009-04-29 08:34:44 +0000 | [diff] [blame] | 95 | ctrl1000 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000); |
| 96 | stat1000 = mii->mdio_read(dev, mii->phy_id, MII_STAT1000); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 97 | } |
| 98 | if (bmcr & BMCR_ANENABLE) { |
| 99 | ecmd->advertising |= ADVERTISED_Autoneg; |
| 100 | ecmd->autoneg = AUTONEG_ENABLE; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 101 | |
Ben Hutchings | 5974700 | 2009-04-29 08:34:44 +0000 | [diff] [blame] | 102 | ecmd->advertising |= mii_get_an(mii, MII_ADVERTISE); |
| 103 | if (ctrl1000 & ADVERTISE_1000HALF) |
| 104 | ecmd->advertising |= ADVERTISED_1000baseT_Half; |
| 105 | if (ctrl1000 & ADVERTISE_1000FULL) |
| 106 | ecmd->advertising |= ADVERTISED_1000baseT_Full; |
| 107 | |
| 108 | if (bmsr & BMSR_ANEGCOMPLETE) { |
| 109 | ecmd->lp_advertising = mii_get_an(mii, MII_LPA); |
| 110 | if (stat1000 & LPA_1000HALF) |
| 111 | ecmd->lp_advertising |= |
| 112 | ADVERTISED_1000baseT_Half; |
| 113 | if (stat1000 & LPA_1000FULL) |
| 114 | ecmd->lp_advertising |= |
| 115 | ADVERTISED_1000baseT_Full; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | } else { |
Ben Hutchings | 5974700 | 2009-04-29 08:34:44 +0000 | [diff] [blame] | 117 | ecmd->lp_advertising = 0; |
| 118 | } |
| 119 | |
| 120 | nego = ecmd->advertising & ecmd->lp_advertising; |
| 121 | |
| 122 | if (nego & (ADVERTISED_1000baseT_Full | |
| 123 | ADVERTISED_1000baseT_Half)) { |
| 124 | ecmd->speed = SPEED_1000; |
| 125 | ecmd->duplex = !!(nego & ADVERTISED_1000baseT_Full); |
| 126 | } else if (nego & (ADVERTISED_100baseT_Full | |
| 127 | ADVERTISED_100baseT_Half)) { |
| 128 | ecmd->speed = SPEED_100; |
| 129 | ecmd->duplex = !!(nego & ADVERTISED_100baseT_Full); |
| 130 | } else { |
| 131 | ecmd->speed = SPEED_10; |
| 132 | ecmd->duplex = !!(nego & ADVERTISED_10baseT_Full); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 133 | } |
| 134 | } else { |
| 135 | ecmd->autoneg = AUTONEG_DISABLE; |
| 136 | |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 137 | ecmd->speed = ((bmcr & BMCR_SPEED1000 && |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 138 | (bmcr & BMCR_SPEED100) == 0) ? SPEED_1000 : |
| 139 | (bmcr & BMCR_SPEED100) ? SPEED_100 : SPEED_10); |
| 140 | ecmd->duplex = (bmcr & BMCR_FULLDPLX) ? DUPLEX_FULL : DUPLEX_HALF; |
| 141 | } |
| 142 | |
Ben Hutchings | 5974700 | 2009-04-29 08:34:44 +0000 | [diff] [blame] | 143 | mii->full_duplex = ecmd->duplex; |
| 144 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 145 | /* ignore maxtxpkt, maxrxpkt for now */ |
| 146 | |
| 147 | return 0; |
| 148 | } |
| 149 | |
Randy Dunlap | 32684ec | 2007-04-06 11:08:24 -0700 | [diff] [blame] | 150 | /** |
| 151 | * mii_ethtool_sset - set settings that are specified in @ecmd |
| 152 | * @mii: MII interface |
| 153 | * @ecmd: requested ethtool_cmd |
| 154 | * |
| 155 | * Returns 0 for success, negative on error. |
| 156 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | int mii_ethtool_sset(struct mii_if_info *mii, struct ethtool_cmd *ecmd) |
| 158 | { |
| 159 | struct net_device *dev = mii->dev; |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame^] | 160 | u32 speed = ethtool_cmd_speed(ecmd); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame^] | 162 | if (speed != SPEED_10 && |
| 163 | speed != SPEED_100 && |
| 164 | speed != SPEED_1000) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 165 | return -EINVAL; |
| 166 | if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL) |
| 167 | return -EINVAL; |
| 168 | if (ecmd->port != PORT_MII) |
| 169 | return -EINVAL; |
| 170 | if (ecmd->transceiver != XCVR_INTERNAL) |
| 171 | return -EINVAL; |
| 172 | if (ecmd->phy_address != mii->phy_id) |
| 173 | return -EINVAL; |
| 174 | if (ecmd->autoneg != AUTONEG_DISABLE && ecmd->autoneg != AUTONEG_ENABLE) |
| 175 | return -EINVAL; |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame^] | 176 | if ((speed == SPEED_1000) && (!mii->supports_gmii)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 177 | return -EINVAL; |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 178 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 179 | /* ignore supported, maxtxpkt, maxrxpkt */ |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 180 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 181 | if (ecmd->autoneg == AUTONEG_ENABLE) { |
| 182 | u32 bmcr, advert, tmp; |
| 183 | u32 advert2 = 0, tmp2 = 0; |
| 184 | |
| 185 | if ((ecmd->advertising & (ADVERTISED_10baseT_Half | |
| 186 | ADVERTISED_10baseT_Full | |
| 187 | ADVERTISED_100baseT_Half | |
| 188 | ADVERTISED_100baseT_Full | |
| 189 | ADVERTISED_1000baseT_Half | |
| 190 | ADVERTISED_1000baseT_Full)) == 0) |
| 191 | return -EINVAL; |
| 192 | |
| 193 | /* advertise only what has been requested */ |
| 194 | advert = mii->mdio_read(dev, mii->phy_id, MII_ADVERTISE); |
| 195 | tmp = advert & ~(ADVERTISE_ALL | ADVERTISE_100BASE4); |
| 196 | if (mii->supports_gmii) { |
| 197 | advert2 = mii->mdio_read(dev, mii->phy_id, MII_CTRL1000); |
| 198 | tmp2 = advert2 & ~(ADVERTISE_1000HALF | ADVERTISE_1000FULL); |
| 199 | } |
| 200 | if (ecmd->advertising & ADVERTISED_10baseT_Half) |
| 201 | tmp |= ADVERTISE_10HALF; |
| 202 | if (ecmd->advertising & ADVERTISED_10baseT_Full) |
| 203 | tmp |= ADVERTISE_10FULL; |
| 204 | if (ecmd->advertising & ADVERTISED_100baseT_Half) |
| 205 | tmp |= ADVERTISE_100HALF; |
| 206 | if (ecmd->advertising & ADVERTISED_100baseT_Full) |
| 207 | tmp |= ADVERTISE_100FULL; |
| 208 | if (mii->supports_gmii) { |
| 209 | if (ecmd->advertising & ADVERTISED_1000baseT_Half) |
| 210 | tmp2 |= ADVERTISE_1000HALF; |
| 211 | if (ecmd->advertising & ADVERTISED_1000baseT_Full) |
| 212 | tmp2 |= ADVERTISE_1000FULL; |
| 213 | } |
| 214 | if (advert != tmp) { |
| 215 | mii->mdio_write(dev, mii->phy_id, MII_ADVERTISE, tmp); |
| 216 | mii->advertising = tmp; |
| 217 | } |
| 218 | if ((mii->supports_gmii) && (advert2 != tmp2)) |
| 219 | mii->mdio_write(dev, mii->phy_id, MII_CTRL1000, tmp2); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 220 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 221 | /* turn on autonegotiation, and force a renegotiate */ |
| 222 | bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); |
| 223 | bmcr |= (BMCR_ANENABLE | BMCR_ANRESTART); |
| 224 | mii->mdio_write(dev, mii->phy_id, MII_BMCR, bmcr); |
| 225 | |
| 226 | mii->force_media = 0; |
| 227 | } else { |
| 228 | u32 bmcr, tmp; |
| 229 | |
| 230 | /* turn off auto negotiation, set speed and duplexity */ |
| 231 | bmcr = mii->mdio_read(dev, mii->phy_id, MII_BMCR); |
Jeff Garzik | 6aa20a2 | 2006-09-13 13:24:59 -0400 | [diff] [blame] | 232 | tmp = bmcr & ~(BMCR_ANENABLE | BMCR_SPEED100 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 233 | BMCR_SPEED1000 | BMCR_FULLDPLX); |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame^] | 234 | if (speed == SPEED_1000) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 235 | tmp |= BMCR_SPEED1000; |
David Decotigny | 25db033 | 2011-04-27 18:32:39 +0000 | [diff] [blame^] | 236 | else if (speed == SPEED_100) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 237 | tmp |= BMCR_SPEED100; |
| 238 | if (ecmd->duplex == DUPLEX_FULL) { |
| 239 | tmp |= BMCR_FULLDPLX; |
| 240 | mii->full_duplex = 1; |
| 241 | } else |
| 242 | mii->full_duplex = 0; |
| 243 | if (bmcr != tmp) |
| 244 | mii->mdio_write(dev, mii->phy_id, MII_BMCR, tmp); |
| 245 | |
| 246 | mii->force_media = 1; |
| 247 | } |
| 248 | return 0; |
| 249 | } |
| 250 | |
Randy Dunlap | 32684ec | 2007-04-06 11:08:24 -0700 | [diff] [blame] | 251 | /** |
| 252 | * mii_check_gmii_support - check if the MII supports Gb interfaces |
| 253 | * @mii: the MII interface |
| 254 | */ |
Dale Farnsworth | 43ec6e9 | 2005-08-23 10:30:29 -0700 | [diff] [blame] | 255 | int mii_check_gmii_support(struct mii_if_info *mii) |
| 256 | { |
| 257 | int reg; |
| 258 | |
| 259 | reg = mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR); |
| 260 | if (reg & BMSR_ESTATEN) { |
| 261 | reg = mii->mdio_read(mii->dev, mii->phy_id, MII_ESTATUS); |
| 262 | if (reg & (ESTATUS_1000_TFULL | ESTATUS_1000_THALF)) |
| 263 | return 1; |
| 264 | } |
| 265 | |
| 266 | return 0; |
| 267 | } |
| 268 | |
Randy Dunlap | 32684ec | 2007-04-06 11:08:24 -0700 | [diff] [blame] | 269 | /** |
| 270 | * mii_link_ok - is link status up/ok |
| 271 | * @mii: the MII interface |
| 272 | * |
| 273 | * Returns 1 if the MII reports link status up/ok, 0 otherwise. |
| 274 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | int mii_link_ok (struct mii_if_info *mii) |
| 276 | { |
| 277 | /* first, a dummy read, needed to latch some MII phys */ |
| 278 | mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR); |
| 279 | if (mii->mdio_read(mii->dev, mii->phy_id, MII_BMSR) & BMSR_LSTATUS) |
| 280 | return 1; |
| 281 | return 0; |
| 282 | } |
| 283 | |
Randy Dunlap | 32684ec | 2007-04-06 11:08:24 -0700 | [diff] [blame] | 284 | /** |
| 285 | * mii_nway_restart - restart NWay (autonegotiation) for this interface |
| 286 | * @mii: the MII interface |
| 287 | * |
| 288 | * Returns 0 on success, negative on error. |
| 289 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 290 | int mii_nway_restart (struct mii_if_info *mii) |
| 291 | { |
| 292 | int bmcr; |
| 293 | int r = -EINVAL; |
| 294 | |
| 295 | /* if autoneg is off, it's an error */ |
| 296 | bmcr = mii->mdio_read(mii->dev, mii->phy_id, MII_BMCR); |
| 297 | |
| 298 | if (bmcr & BMCR_ANENABLE) { |
| 299 | bmcr |= BMCR_ANRESTART; |
| 300 | mii->mdio_write(mii->dev, mii->phy_id, MII_BMCR, bmcr); |
| 301 | r = 0; |
| 302 | } |
| 303 | |
| 304 | return r; |
| 305 | } |
| 306 | |
Randy Dunlap | 32684ec | 2007-04-06 11:08:24 -0700 | [diff] [blame] | 307 | /** |
| 308 | * mii_check_link - check MII link status |
| 309 | * @mii: MII interface |
| 310 | * |
| 311 | * If the link status changed (previous != current), call |
| 312 | * netif_carrier_on() if current link status is Up or call |
| 313 | * netif_carrier_off() if current link status is Down. |
| 314 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 315 | void mii_check_link (struct mii_if_info *mii) |
| 316 | { |
| 317 | int cur_link = mii_link_ok(mii); |
| 318 | int prev_link = netif_carrier_ok(mii->dev); |
| 319 | |
| 320 | if (cur_link && !prev_link) |
| 321 | netif_carrier_on(mii->dev); |
| 322 | else if (prev_link && !cur_link) |
| 323 | netif_carrier_off(mii->dev); |
| 324 | } |
| 325 | |
Randy Dunlap | 32684ec | 2007-04-06 11:08:24 -0700 | [diff] [blame] | 326 | /** |
| 327 | * mii_check_media - check the MII interface for a duplex change |
| 328 | * @mii: the MII interface |
| 329 | * @ok_to_print: OK to print link up/down messages |
| 330 | * @init_media: OK to save duplex mode in @mii |
| 331 | * |
| 332 | * Returns 1 if the duplex mode changed, 0 if not. |
| 333 | * If the media type is forced, always returns 0. |
| 334 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 335 | unsigned int mii_check_media (struct mii_if_info *mii, |
| 336 | unsigned int ok_to_print, |
| 337 | unsigned int init_media) |
| 338 | { |
| 339 | unsigned int old_carrier, new_carrier; |
| 340 | int advertise, lpa, media, duplex; |
| 341 | int lpa2 = 0; |
| 342 | |
| 343 | /* if forced media, go no further */ |
| 344 | if (mii->force_media) |
| 345 | return 0; /* duplex did not change */ |
| 346 | |
| 347 | /* check current and old link status */ |
| 348 | old_carrier = netif_carrier_ok(mii->dev) ? 1 : 0; |
| 349 | new_carrier = (unsigned int) mii_link_ok(mii); |
| 350 | |
| 351 | /* if carrier state did not change, this is a "bounce", |
| 352 | * just exit as everything is already set correctly |
| 353 | */ |
| 354 | if ((!init_media) && (old_carrier == new_carrier)) |
| 355 | return 0; /* duplex did not change */ |
| 356 | |
| 357 | /* no carrier, nothing much to do */ |
| 358 | if (!new_carrier) { |
| 359 | netif_carrier_off(mii->dev); |
| 360 | if (ok_to_print) |
Joe Perches | 967faf3 | 2011-03-03 12:55:08 -0800 | [diff] [blame] | 361 | netdev_info(mii->dev, "link down\n"); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 362 | return 0; /* duplex did not change */ |
| 363 | } |
| 364 | |
| 365 | /* |
| 366 | * we have carrier, see who's on the other end |
| 367 | */ |
| 368 | netif_carrier_on(mii->dev); |
| 369 | |
| 370 | /* get MII advertise and LPA values */ |
| 371 | if ((!init_media) && (mii->advertising)) |
| 372 | advertise = mii->advertising; |
| 373 | else { |
| 374 | advertise = mii->mdio_read(mii->dev, mii->phy_id, MII_ADVERTISE); |
| 375 | mii->advertising = advertise; |
| 376 | } |
| 377 | lpa = mii->mdio_read(mii->dev, mii->phy_id, MII_LPA); |
| 378 | if (mii->supports_gmii) |
| 379 | lpa2 = mii->mdio_read(mii->dev, mii->phy_id, MII_STAT1000); |
| 380 | |
| 381 | /* figure out media and duplex from advertise and LPA values */ |
| 382 | media = mii_nway_result(lpa & advertise); |
| 383 | duplex = (media & ADVERTISE_FULL) ? 1 : 0; |
| 384 | if (lpa2 & LPA_1000FULL) |
| 385 | duplex = 1; |
| 386 | |
| 387 | if (ok_to_print) |
Joe Perches | 967faf3 | 2011-03-03 12:55:08 -0800 | [diff] [blame] | 388 | netdev_info(mii->dev, "link up, %uMbps, %s-duplex, lpa 0x%04X\n", |
| 389 | lpa2 & (LPA_1000FULL | LPA_1000HALF) ? 1000 : |
| 390 | media & (ADVERTISE_100FULL | ADVERTISE_100HALF) ? |
| 391 | 100 : 10, |
| 392 | duplex ? "full" : "half", |
| 393 | lpa); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | |
| 395 | if ((init_media) || (mii->full_duplex != duplex)) { |
| 396 | mii->full_duplex = duplex; |
| 397 | return 1; /* duplex changed */ |
| 398 | } |
| 399 | |
| 400 | return 0; /* duplex did not change */ |
| 401 | } |
| 402 | |
Randy Dunlap | 32684ec | 2007-04-06 11:08:24 -0700 | [diff] [blame] | 403 | /** |
| 404 | * generic_mii_ioctl - main MII ioctl interface |
| 405 | * @mii_if: the MII interface |
| 406 | * @mii_data: MII ioctl data structure |
| 407 | * @cmd: MII ioctl command |
| 408 | * @duplex_chg_out: pointer to @duplex_changed status if there was no |
| 409 | * ioctl error |
| 410 | * |
| 411 | * Returns 0 on success, negative on error. |
| 412 | */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 413 | int generic_mii_ioctl(struct mii_if_info *mii_if, |
| 414 | struct mii_ioctl_data *mii_data, int cmd, |
| 415 | unsigned int *duplex_chg_out) |
| 416 | { |
| 417 | int rc = 0; |
| 418 | unsigned int duplex_changed = 0; |
| 419 | |
| 420 | if (duplex_chg_out) |
| 421 | *duplex_chg_out = 0; |
| 422 | |
| 423 | mii_data->phy_id &= mii_if->phy_id_mask; |
| 424 | mii_data->reg_num &= mii_if->reg_num_mask; |
| 425 | |
| 426 | switch(cmd) { |
| 427 | case SIOCGMIIPHY: |
| 428 | mii_data->phy_id = mii_if->phy_id; |
| 429 | /* fall through */ |
| 430 | |
| 431 | case SIOCGMIIREG: |
| 432 | mii_data->val_out = |
| 433 | mii_if->mdio_read(mii_if->dev, mii_data->phy_id, |
| 434 | mii_data->reg_num); |
| 435 | break; |
| 436 | |
| 437 | case SIOCSMIIREG: { |
| 438 | u16 val = mii_data->val_in; |
| 439 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 440 | if (mii_data->phy_id == mii_if->phy_id) { |
| 441 | switch(mii_data->reg_num) { |
| 442 | case MII_BMCR: { |
| 443 | unsigned int new_duplex = 0; |
| 444 | if (val & (BMCR_RESET|BMCR_ANENABLE)) |
| 445 | mii_if->force_media = 0; |
| 446 | else |
| 447 | mii_if->force_media = 1; |
| 448 | if (mii_if->force_media && |
| 449 | (val & BMCR_FULLDPLX)) |
| 450 | new_duplex = 1; |
| 451 | if (mii_if->full_duplex != new_duplex) { |
| 452 | duplex_changed = 1; |
| 453 | mii_if->full_duplex = new_duplex; |
| 454 | } |
| 455 | break; |
| 456 | } |
| 457 | case MII_ADVERTISE: |
| 458 | mii_if->advertising = val; |
| 459 | break; |
| 460 | default: |
| 461 | /* do nothing */ |
| 462 | break; |
| 463 | } |
| 464 | } |
| 465 | |
| 466 | mii_if->mdio_write(mii_if->dev, mii_data->phy_id, |
| 467 | mii_data->reg_num, val); |
| 468 | break; |
| 469 | } |
| 470 | |
| 471 | default: |
| 472 | rc = -EOPNOTSUPP; |
| 473 | break; |
| 474 | } |
| 475 | |
| 476 | if ((rc == 0) && (duplex_chg_out) && (duplex_changed)) |
| 477 | *duplex_chg_out = 1; |
| 478 | |
| 479 | return rc; |
| 480 | } |
| 481 | |
| 482 | MODULE_AUTHOR ("Jeff Garzik <jgarzik@pobox.com>"); |
| 483 | MODULE_DESCRIPTION ("MII hardware support library"); |
| 484 | MODULE_LICENSE("GPL"); |
| 485 | |
| 486 | EXPORT_SYMBOL(mii_link_ok); |
| 487 | EXPORT_SYMBOL(mii_nway_restart); |
| 488 | EXPORT_SYMBOL(mii_ethtool_gset); |
| 489 | EXPORT_SYMBOL(mii_ethtool_sset); |
| 490 | EXPORT_SYMBOL(mii_check_link); |
| 491 | EXPORT_SYMBOL(mii_check_media); |
Dale Farnsworth | 43ec6e9 | 2005-08-23 10:30:29 -0700 | [diff] [blame] | 492 | EXPORT_SYMBOL(mii_check_gmii_support); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 493 | EXPORT_SYMBOL(generic_mii_ioctl); |
| 494 | |