| 1 | /* $NetBSD: ciphy.c,v 1.26 2016/07/07 06:55:41 msaitoh Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 2004 |
| 5 | * Bill Paul <wpaul@windriver.com>. All rights reserved. |
| 6 | * |
| 7 | * Redistribution and use in source and binary forms, with or without |
| 8 | * modification, are permitted provided that the following conditions |
| 9 | * are met: |
| 10 | * 1. Redistributions of source code must retain the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer. |
| 12 | * 2. Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * 3. All advertising materials mentioning features or use of this software |
| 16 | * must display the following acknowledgement: |
| 17 | * This product includes software developed by Bill Paul. |
| 18 | * 4. Neither the name of the author nor the names of any co-contributors |
| 19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD |
| 26 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 27 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 28 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 29 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 30 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 31 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
| 32 | * THE POSSIBILITY OF SUCH DAMAGE. |
| 33 | * |
| 34 | * FreeBSD: src/sys/dev/mii/ciphy.c,v 1.2 2005/01/06 01:42:55 imp Exp |
| 35 | */ |
| 36 | |
| 37 | #include <sys/cdefs.h> |
| 38 | __KERNEL_RCSID(0, "$NetBSD: ciphy.c,v 1.26 2016/07/07 06:55:41 msaitoh Exp $" ); |
| 39 | |
| 40 | /* |
| 41 | * Driver for the Cicada CS8201 10/100/1000 copper PHY. |
| 42 | */ |
| 43 | |
| 44 | #include <sys/param.h> |
| 45 | #include <sys/systm.h> |
| 46 | #include <sys/device.h> |
| 47 | #include <sys/kernel.h> |
| 48 | #include <sys/socket.h> |
| 49 | #include <sys/bus.h> |
| 50 | |
| 51 | #include <net/if.h> |
| 52 | #include <net/if_arp.h> |
| 53 | #include <net/if_media.h> |
| 54 | |
| 55 | #include <dev/mii/mii.h> |
| 56 | #include <dev/mii/miivar.h> |
| 57 | #include <dev/mii/miidevs.h> |
| 58 | |
| 59 | #include <dev/mii/ciphyreg.h> |
| 60 | |
| 61 | static int ciphymatch(device_t, cfdata_t, void *); |
| 62 | static void ciphyattach(device_t, device_t, void *); |
| 63 | |
| 64 | CFATTACH_DECL_NEW(ciphy, sizeof(struct mii_softc), |
| 65 | ciphymatch, ciphyattach, mii_phy_detach, mii_phy_activate); |
| 66 | |
| 67 | static int ciphy_service(struct mii_softc *, struct mii_data *, int); |
| 68 | static void ciphy_status(struct mii_softc *); |
| 69 | static void ciphy_reset(struct mii_softc *); |
| 70 | static void ciphy_fixup(struct mii_softc *); |
| 71 | |
| 72 | static const struct mii_phy_funcs ciphy_funcs = { |
| 73 | ciphy_service, ciphy_status, mii_phy_reset, |
| 74 | }; |
| 75 | |
| 76 | static const struct mii_phydesc ciphys[] = { |
| 77 | { MII_OUI_CICADA, MII_MODEL_CICADA_CS8201, |
| 78 | MII_STR_CICADA_CS8201 }, |
| 79 | |
| 80 | { MII_OUI_CICADA, MII_MODEL_CICADA_CS8201A, |
| 81 | MII_STR_CICADA_CS8201A }, |
| 82 | |
| 83 | { MII_OUI_CICADA, MII_MODEL_CICADA_CS8201B, |
| 84 | MII_STR_CICADA_CS8201B }, |
| 85 | |
| 86 | { MII_OUI_xxCICADA, MII_MODEL_CICADA_CS8201, |
| 87 | MII_STR_CICADA_CS8201 }, |
| 88 | |
| 89 | { MII_OUI_xxCICADA, MII_MODEL_CICADA_CS8201A, |
| 90 | MII_STR_CICADA_CS8201A }, |
| 91 | |
| 92 | { MII_OUI_xxCICADA, MII_MODEL_xxCICADA_CS8201B, |
| 93 | MII_STR_xxCICADA_CS8201B }, |
| 94 | |
| 95 | { 0, 0, |
| 96 | NULL }, |
| 97 | }; |
| 98 | |
| 99 | static int |
| 100 | ciphymatch(device_t parent, cfdata_t match, |
| 101 | void *aux) |
| 102 | { |
| 103 | struct mii_attach_args *ma = aux; |
| 104 | |
| 105 | if (mii_phy_match(ma, ciphys) != NULL) |
| 106 | return (10); |
| 107 | |
| 108 | return (0); |
| 109 | } |
| 110 | |
| 111 | static void |
| 112 | ciphyattach(device_t parent, device_t self, void *aux) |
| 113 | { |
| 114 | struct mii_softc *sc = device_private(self); |
| 115 | struct mii_attach_args *ma = aux; |
| 116 | struct mii_data *mii = ma->mii_data; |
| 117 | const struct mii_phydesc *mpd; |
| 118 | |
| 119 | mpd = mii_phy_match(ma, ciphys); |
| 120 | aprint_naive(": Media interface\n" ); |
| 121 | aprint_normal(": %s, rev. %d\n" , mpd->mpd_name, MII_REV(ma->mii_id2)); |
| 122 | |
| 123 | sc->mii_dev = self; |
| 124 | sc->mii_inst = mii->mii_instance; |
| 125 | sc->mii_phy = ma->mii_phyno; |
| 126 | sc->mii_funcs = &ciphy_funcs; |
| 127 | sc->mii_pdata = mii; |
| 128 | sc->mii_flags = ma->mii_flags; |
| 129 | sc->mii_anegticks = MII_ANEGTICKS; |
| 130 | |
| 131 | sc->mii_flags |= MIIF_NOISOLATE; |
| 132 | |
| 133 | ciphy_reset(sc); |
| 134 | |
| 135 | sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; |
| 136 | if (sc->mii_capabilities & BMSR_EXTSTAT) |
| 137 | sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR); |
| 138 | aprint_normal_dev(self, "" ); |
| 139 | if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) |
| 140 | aprint_error("no media present" ); |
| 141 | else |
| 142 | mii_phy_add_media(sc); |
| 143 | aprint_normal("\n" ); |
| 144 | } |
| 145 | |
| 146 | static int |
| 147 | ciphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) |
| 148 | { |
| 149 | struct ifmedia_entry *ife = mii->mii_media.ifm_cur; |
| 150 | int reg, speed, gig; |
| 151 | |
| 152 | switch (cmd) { |
| 153 | case MII_POLLSTAT: |
| 154 | /* |
| 155 | * If we're not polling our PHY instance, just return. |
| 156 | */ |
| 157 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
| 158 | return (0); |
| 159 | break; |
| 160 | |
| 161 | case MII_MEDIACHG: |
| 162 | /* |
| 163 | * If the media indicates a different PHY instance, |
| 164 | * isolate ourselves. |
| 165 | */ |
| 166 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) { |
| 167 | reg = PHY_READ(sc, MII_BMCR); |
| 168 | PHY_WRITE(sc, MII_BMCR, reg | BMCR_ISO); |
| 169 | return (0); |
| 170 | } |
| 171 | |
| 172 | /* |
| 173 | * If the interface is not up, don't do anything. |
| 174 | */ |
| 175 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
| 176 | break; |
| 177 | |
| 178 | ciphy_fixup(sc); /* XXX hardware bug work-around */ |
| 179 | |
| 180 | switch (IFM_SUBTYPE(ife->ifm_media)) { |
| 181 | case IFM_AUTO: |
| 182 | #ifdef foo |
| 183 | /* |
| 184 | * If we're already in auto mode, just return. |
| 185 | */ |
| 186 | if (PHY_READ(sc, CIPHY_MII_BMCR) & CIPHY_BMCR_AUTOEN) |
| 187 | return (0); |
| 188 | #endif |
| 189 | (void) mii_phy_auto(sc, 0); |
| 190 | break; |
| 191 | case IFM_1000_T: |
| 192 | speed = CIPHY_S1000; |
| 193 | goto setit; |
| 194 | case IFM_100_TX: |
| 195 | speed = CIPHY_S100; |
| 196 | goto setit; |
| 197 | case IFM_10_T: |
| 198 | speed = CIPHY_S10; |
| 199 | setit: |
| 200 | if ((ife->ifm_media & IFM_GMASK) == IFM_FDX) { |
| 201 | speed |= CIPHY_BMCR_FDX; |
| 202 | gig = CIPHY_1000CTL_AFD; |
| 203 | } else { |
| 204 | gig = CIPHY_1000CTL_AHD; |
| 205 | } |
| 206 | |
| 207 | PHY_WRITE(sc, CIPHY_MII_1000CTL, 0); |
| 208 | PHY_WRITE(sc, CIPHY_MII_BMCR, speed); |
| 209 | PHY_WRITE(sc, CIPHY_MII_ANAR, CIPHY_SEL_TYPE); |
| 210 | |
| 211 | if (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T) |
| 212 | break; |
| 213 | |
| 214 | PHY_WRITE(sc, CIPHY_MII_1000CTL, gig); |
| 215 | PHY_WRITE(sc, CIPHY_MII_BMCR, |
| 216 | speed|CIPHY_BMCR_AUTOEN|CIPHY_BMCR_STARTNEG); |
| 217 | |
| 218 | /* |
| 219 | * When setting the link manually, one side must |
| 220 | * be the master and the other the slave. However |
| 221 | * ifmedia doesn't give us a good way to specify |
| 222 | * this, so we fake it by using one of the LINK |
| 223 | * flags. If LINK0 is set, we program the PHY to |
| 224 | * be a master, otherwise it's a slave. |
| 225 | */ |
| 226 | if ((mii->mii_ifp->if_flags & IFF_LINK0)) { |
| 227 | PHY_WRITE(sc, CIPHY_MII_1000CTL, |
| 228 | gig|CIPHY_1000CTL_MSE|CIPHY_1000CTL_MSC); |
| 229 | } else { |
| 230 | PHY_WRITE(sc, CIPHY_MII_1000CTL, |
| 231 | gig|CIPHY_1000CTL_MSE); |
| 232 | } |
| 233 | break; |
| 234 | case IFM_NONE: |
| 235 | PHY_WRITE(sc, MII_BMCR, BMCR_ISO|BMCR_PDOWN); |
| 236 | break; |
| 237 | case IFM_100_T4: |
| 238 | default: |
| 239 | return (EINVAL); |
| 240 | } |
| 241 | break; |
| 242 | |
| 243 | case MII_TICK: |
| 244 | /* |
| 245 | * If we're not currently selected, just return. |
| 246 | */ |
| 247 | if (IFM_INST(ife->ifm_media) != sc->mii_inst) |
| 248 | return (0); |
| 249 | |
| 250 | /* |
| 251 | * Is the interface even up? |
| 252 | */ |
| 253 | if ((mii->mii_ifp->if_flags & IFF_UP) == 0) |
| 254 | return (0); |
| 255 | |
| 256 | /* |
| 257 | * Only used for autonegotiation. |
| 258 | */ |
| 259 | if ((IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) && |
| 260 | (IFM_SUBTYPE(ife->ifm_media) != IFM_1000_T)) { |
| 261 | /* |
| 262 | * Reset autonegotiation timer to 0 just to make sure |
| 263 | * the future autonegotiation start with 0. |
| 264 | */ |
| 265 | sc->mii_ticks = 0; |
| 266 | break; |
| 267 | } |
| 268 | |
| 269 | /* |
| 270 | * Check to see if we have link. If we do, we don't |
| 271 | * need to restart the autonegotiation process. Read |
| 272 | * the BMSR twice in case it's latched. |
| 273 | */ |
| 274 | reg = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); |
| 275 | if (reg & BMSR_LINK) { |
| 276 | /* |
| 277 | * Reset autonegotiation timer to 0 in case the link |
| 278 | * goes down in the next tick. |
| 279 | */ |
| 280 | sc->mii_ticks = 0; |
| 281 | /* See above. */ |
| 282 | break; |
| 283 | } |
| 284 | |
| 285 | /* |
| 286 | * mii_ticks == 0 means it's the first tick after changing the |
| 287 | * media or the link became down since the last tick |
| 288 | * (see above), so return with 0 to update the status. |
| 289 | */ |
| 290 | if (sc->mii_ticks++ == 0) |
| 291 | break; |
| 292 | |
| 293 | /* |
| 294 | * Only retry autonegotiation every N seconds. |
| 295 | */ |
| 296 | if (sc->mii_ticks <= MII_ANEGTICKS_GIGE) |
| 297 | break; |
| 298 | |
| 299 | mii_phy_auto(sc, 0); |
| 300 | return (0); |
| 301 | } |
| 302 | |
| 303 | /* Update the media status. */ |
| 304 | ciphy_status(sc); |
| 305 | |
| 306 | /* |
| 307 | * Callback if something changed. Note that we need to poke |
| 308 | * apply fixups for certain PHY revs. |
| 309 | */ |
| 310 | if (sc->mii_media_active != mii->mii_media_active || |
| 311 | sc->mii_media_status != mii->mii_media_status || |
| 312 | cmd == MII_MEDIACHG) { |
| 313 | ciphy_fixup(sc); |
| 314 | } |
| 315 | mii_phy_update(sc, cmd); |
| 316 | return (0); |
| 317 | } |
| 318 | |
| 319 | static void |
| 320 | ciphy_status(struct mii_softc *sc) |
| 321 | { |
| 322 | struct mii_data *mii = sc->mii_pdata; |
| 323 | int bmsr, bmcr; |
| 324 | |
| 325 | mii->mii_media_status = IFM_AVALID; |
| 326 | mii->mii_media_active = IFM_ETHER; |
| 327 | |
| 328 | bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR); |
| 329 | |
| 330 | if (bmsr & BMSR_LINK) |
| 331 | mii->mii_media_status |= IFM_ACTIVE; |
| 332 | |
| 333 | bmcr = PHY_READ(sc, CIPHY_MII_BMCR); |
| 334 | |
| 335 | if (bmcr & CIPHY_BMCR_LOOP) |
| 336 | mii->mii_media_active |= IFM_LOOP; |
| 337 | |
| 338 | if (bmcr & CIPHY_BMCR_AUTOEN) { |
| 339 | if ((bmsr & CIPHY_BMSR_ACOMP) == 0) { |
| 340 | /* Erg, still trying, I guess... */ |
| 341 | mii->mii_media_active |= IFM_NONE; |
| 342 | return; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | bmsr = PHY_READ(sc, CIPHY_MII_AUXCSR); |
| 347 | switch (bmsr & CIPHY_AUXCSR_SPEED) { |
| 348 | case CIPHY_SPEED10: |
| 349 | mii->mii_media_active |= IFM_10_T; |
| 350 | break; |
| 351 | case CIPHY_SPEED100: |
| 352 | mii->mii_media_active |= IFM_100_TX; |
| 353 | break; |
| 354 | case CIPHY_SPEED1000: |
| 355 | mii->mii_media_active |= IFM_1000_T; |
| 356 | break; |
| 357 | default: |
| 358 | aprint_error_dev(sc->mii_dev, "unknown PHY speed %x\n" , |
| 359 | bmsr & CIPHY_AUXCSR_SPEED); |
| 360 | break; |
| 361 | } |
| 362 | |
| 363 | if (bmsr & CIPHY_AUXCSR_FDX) |
| 364 | mii->mii_media_active |= IFM_FDX; |
| 365 | else |
| 366 | mii->mii_media_active |= IFM_HDX; |
| 367 | |
| 368 | return; |
| 369 | } |
| 370 | |
| 371 | static void |
| 372 | ciphy_reset(struct mii_softc *sc) |
| 373 | { |
| 374 | mii_phy_reset(sc); |
| 375 | DELAY(1000); |
| 376 | |
| 377 | return; |
| 378 | } |
| 379 | |
| 380 | #define PHY_SETBIT(x, y, z) \ |
| 381 | PHY_WRITE(x, y, (PHY_READ(x, y) | (z))) |
| 382 | #define PHY_CLRBIT(x, y, z) \ |
| 383 | PHY_WRITE(x, y, (PHY_READ(x, y) & ~(z))) |
| 384 | |
| 385 | static void |
| 386 | ciphy_fixup(struct mii_softc *sc) |
| 387 | { |
| 388 | uint16_t model; |
| 389 | uint16_t status, speed; |
| 390 | |
| 391 | model = MII_MODEL(PHY_READ(sc, CIPHY_MII_PHYIDR2)); |
| 392 | status = PHY_READ(sc, CIPHY_MII_AUXCSR); |
| 393 | speed = status & CIPHY_AUXCSR_SPEED; |
| 394 | |
| 395 | if (device_is_a(device_parent(sc->mii_dev), "nfe" )) { |
| 396 | /* need to set for 2.5V RGMII for NVIDIA adapters */ |
| 397 | PHY_SETBIT(sc, CIPHY_MII_ECTL1, CIPHY_INTSEL_RGMII); |
| 398 | PHY_SETBIT(sc, CIPHY_MII_ECTL1, CIPHY_IOVOL_2500MV); |
| 399 | } |
| 400 | |
| 401 | switch (model) { |
| 402 | case MII_MODEL_CICADA_CS8201: |
| 403 | |
| 404 | /* Turn off "aux mode" (whatever that means) */ |
| 405 | PHY_SETBIT(sc, CIPHY_MII_AUXCSR, CIPHY_AUXCSR_MDPPS); |
| 406 | |
| 407 | /* |
| 408 | * Work around speed polling bug in VT3119/VT3216 |
| 409 | * when using MII in full duplex mode. |
| 410 | */ |
| 411 | if ((speed == CIPHY_SPEED10 || speed == CIPHY_SPEED100) && |
| 412 | (status & CIPHY_AUXCSR_FDX)) { |
| 413 | PHY_SETBIT(sc, CIPHY_MII_10BTCSR, CIPHY_10BTCSR_ECHO); |
| 414 | } else { |
| 415 | PHY_CLRBIT(sc, CIPHY_MII_10BTCSR, CIPHY_10BTCSR_ECHO); |
| 416 | } |
| 417 | |
| 418 | /* Enable link/activity LED blink. */ |
| 419 | PHY_SETBIT(sc, CIPHY_MII_LED, CIPHY_LED_LINKACTBLINK); |
| 420 | |
| 421 | break; |
| 422 | |
| 423 | case MII_MODEL_CICADA_CS8201A: |
| 424 | case MII_MODEL_CICADA_CS8201B: |
| 425 | |
| 426 | /* |
| 427 | * Work around speed polling bug in VT3119/VT3216 |
| 428 | * when using MII in full duplex mode. |
| 429 | */ |
| 430 | if ((speed == CIPHY_SPEED10 || speed == CIPHY_SPEED100) && |
| 431 | (status & CIPHY_AUXCSR_FDX)) { |
| 432 | PHY_SETBIT(sc, CIPHY_MII_10BTCSR, CIPHY_10BTCSR_ECHO); |
| 433 | } else { |
| 434 | PHY_CLRBIT(sc, CIPHY_MII_10BTCSR, CIPHY_10BTCSR_ECHO); |
| 435 | } |
| 436 | |
| 437 | break; |
| 438 | default: |
| 439 | aprint_error_dev(sc->mii_dev, "unknown CICADA PHY model %x\n" , |
| 440 | model); |
| 441 | break; |
| 442 | } |
| 443 | |
| 444 | return; |
| 445 | } |
| 446 | |