1 /* $NetBSD: mvphy.c,v 1.1 2006/07/21 23:55:27 gdamore Exp $ */ 2 3 /*- 4 * Copyright (c) 2006 Sam Leffler, Errno Consulting 5 * 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 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 /* 30 * Driver for Marvell 88E6060 10/100 5-port PHY switch. 31 */ 32 33 #include <sys/cdefs.h> 34 __KERNEL_RCSID(0, "$NetBSD: mvphy.c,v 1.1 2006/07/21 23:55:27 gdamore Exp $"); 35 36 #include <sys/param.h> 37 #include <sys/systm.h> 38 #include <sys/kernel.h> 39 #include <sys/device.h> 40 #include <sys/socket.h> 41 #include <sys/errno.h> 42 43 #include <net/if.h> 44 #include <net/if_media.h> 45 46 #include <dev/mii/mii.h> 47 #include <dev/mii/miivar.h> 48 #include <dev/mii/miidevs.h> 49 50 #include <dev/mii/mvphyreg.h> 51 52 #define MV_PORT(sc) ((sc)->mii_phy - 16) /* PHY # to switch port */ 53 #define MV_CPU_PORT 5 /* port # of CPU port */ 54 55 #define MV_READ(p, phy, r) \ 56 (*(p)->mii_pdata->mii_readreg)(device_parent(&(p)->mii_dev), \ 57 phy, (r)) 58 #define MV_WRITE(p, phy, r, v) \ 59 (*(p)->mii_pdata->mii_writereg)(device_parent(&(p)->mii_dev), \ 60 phy, (r), (v)) 61 62 /* XXX sysctl'able */ 63 #define MV_ATUCTRL_ATU_SIZE_DEFAULT 2 /* 1024 entry database */ 64 #define MV_ATUCTRL_AGE_TIME_DEFAULT 19 /* 19 * 16 = 304 seconds */ 65 66 /* 67 * Register manipulation macros that expect bit field defines 68 * to follow the convention that an _S suffix is appended for 69 * a shift count, while the field mask has no suffix. 70 */ 71 #define SM(_v, _f) (((_v) << _f##_S) & _f) 72 #define MS(_v, _f) (((_v) & _f) >> _f##_S) 73 74 static int mvphymatch(struct device *, struct cfdata *, void *); 75 static void mvphyattach(struct device *, struct device *, void *); 76 77 CFATTACH_DECL(mvphy, sizeof(struct mii_softc), 78 mvphymatch, mvphyattach, mii_phy_detach, mii_phy_activate); 79 80 static int mvphy_service(struct mii_softc *, struct mii_data *, int); 81 static void mvphy_status(struct mii_softc *); 82 static void mvphy_reset(struct mii_softc *sc); 83 84 static const struct mii_phy_funcs mvphy_funcs = { 85 mvphy_service, mvphy_status, mvphy_reset, 86 }; 87 88 static const struct mii_phydesc mvphys[] = { 89 { MII_OUI_xxMARVELL, MII_MODEL_xxMARVELL_E6060, 90 MII_STR_xxMARVELL_E6060 }, 91 92 { 0, 0, 93 NULL }, 94 }; 95 96 /* 97 * On AP30/AR5312 the switch is configured in one of two ways: 98 * as a ROUTER or as a BRIDGE. The ROUTER config sets up ports 99 * 0-3 as LAN ports, port 4 as the WAN port, and port 5 connects 100 * to the MAC in the 5312. The BRIDGE config sets up ports 101 * 0-4 as LAN ports with port 5 connected to the MAC in the 5312. 102 */ 103 struct mvPhyConfig { 104 uint16_t switchPortAddr;/* switch port associated with PHY */ 105 uint16_t vlanSetting; /* VLAN table setting for PHY */ 106 uint32_t portControl; /* switch port control setting for PHY */ 107 }; 108 static const struct mvPhyConfig routerConfig[] = { 109 { 0x18, 0x2e, /* PHY port 0 = LAN port 0 */ 110 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 111 { 0x19, 0x2d, /* PHY port 1 = LAN port 1 */ 112 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 113 { 0x1a, 0x2b, /* PHY port 2 = LAN port 2 */ 114 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 115 { 0x1b, 0x27, /* PHY port 3 = LAN port 3 */ 116 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 117 { 0x1c, 0x1020, /* PHY port 4 = WAN port */ 118 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 119 /* NB: 0x0f =>'s send only to LAN ports */ 120 { 0x1d, 0x0f, /* PHY port 5 = CPU port */ 121 MV_PORT_CONTROL_PORT_STATE_FORWARDING 122 #if 0 123 | MV_PORT_CONTROL_INGRESS_TRAILER 124 | MV_PORT_CONTROL_EGRESS_MODE 125 #endif 126 } 127 }; 128 static const struct mvPhyConfig bridgeConfig[] = { 129 { 0x18, 0x3e, /* PHY port 0 = LAN port 0 */ 130 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 131 { 0x19, 0x3d, /* PHY port 1 = LAN port 1 */ 132 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 133 { 0x1a, 0x3b, /* PHY port 2 = LAN port 2 */ 134 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 135 { 0x1b, 0x37, /* PHY port 3 = LAN port 3 */ 136 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 137 { 0x1c, 0x37, /* PHY port 4 = LAN port 4 */ 138 MV_PORT_CONTROL_PORT_STATE_FORWARDING }, 139 /* NB: 0x1f =>'s send to all ports */ 140 { 0x1d, 0x1f, /* PHY port 5 = CPU port */ 141 MV_PORT_CONTROL_PORT_STATE_FORWARDING 142 #if 0 143 | MV_PORT_CONTROL_INGRESS_TRAILER 144 | MV_PORT_CONTROL_EGRESS_MODE 145 #endif 146 } 147 }; 148 149 static void mvphy_switchconfig(struct mii_softc *, int); 150 static void mvphy_flushatu(struct mii_softc *); 151 152 static int 153 mvphymatch(struct device *parent, struct cfdata *match, void *aux) 154 { 155 struct mii_attach_args *ma = aux; 156 157 if (mii_phy_match(ma, mvphys) != NULL) 158 return (10); 159 160 return (0); 161 } 162 163 static void 164 mvphyattach(struct device *parent, struct device *self, void *aux) 165 { 166 struct mii_softc *sc = device_private(self); 167 struct mii_attach_args *ma = aux; 168 struct mii_data *mii = ma->mii_data; 169 const struct mii_phydesc *mpd; 170 171 mpd = mii_phy_match(ma, mvphys); 172 aprint_naive(": Media interface\n"); 173 aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2)); 174 175 sc->mii_inst = mii->mii_instance; 176 sc->mii_phy = ma->mii_phyno; 177 sc->mii_funcs = &mvphy_funcs; 178 sc->mii_pdata = mii; 179 sc->mii_flags = ma->mii_flags; 180 sc->mii_anegticks = 5; 181 182 if (MV_PORT(sc) == 0) { /* NB: only when attaching first PHY */ 183 /* 184 * Set the global switch settings and configure the 185 * CPU port since it does not probe as a visible PHY. 186 */ 187 MV_WRITE(sc, MII_MV_SWITCH_GLOBAL_ADDR, MV_ATU_CONTROL, 188 SM(MV_ATUCTRL_AGE_TIME_DEFAULT, MV_ATUCTRL_AGE_TIME) 189 | SM(MV_ATUCTRL_ATU_SIZE_DEFAULT, MV_ATUCTRL_ATU_SIZE)); 190 mvphy_switchconfig(sc, MV_CPU_PORT); 191 } 192 PHY_RESET(sc); 193 194 sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask; 195 aprint_normal("%s: ", sc->mii_dev.dv_xname); 196 if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0) 197 aprint_error("no media present"); 198 else 199 mii_phy_add_media(sc); 200 aprint_normal("\n"); 201 } 202 203 static int 204 mvphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 205 { 206 struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 207 208 if (!device_is_active(&sc->mii_dev)) 209 return (ENXIO); 210 211 switch (cmd) { 212 case MII_POLLSTAT: 213 /* 214 * If we're not polling our PHY instance, just return. 215 */ 216 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 217 return (0); 218 break; 219 220 case MII_MEDIACHG: 221 /* 222 * If the media indicates a different PHY instance, 223 * isolate ourselves. 224 */ 225 if (IFM_INST(ife->ifm_media) != sc->mii_inst) { 226 /* XXX? */ 227 return (0); 228 } 229 230 /* 231 * If the interface is not up, don't do anything. 232 */ 233 if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 234 break; 235 236 mii_phy_setmedia(sc); 237 break; 238 239 case MII_TICK: 240 /* 241 * If we're not currently selected, just return. 242 */ 243 if (IFM_INST(ife->ifm_media) != sc->mii_inst) 244 return (0); 245 246 if (mii_phy_tick(sc) == EJUSTRETURN) 247 return (0); 248 break; 249 250 case MII_DOWN: 251 mii_phy_down(sc); 252 return (0); 253 } 254 255 /* Update the media status. */ 256 mii_phy_status(sc); 257 258 /* Callback if something changed. */ 259 mii_phy_update(sc, cmd); 260 return (0); 261 } 262 263 static void 264 mvphy_status(struct mii_softc *sc) 265 { 266 struct mii_data *mii = sc->mii_pdata; 267 int hwstatus; 268 269 mii->mii_media_status = IFM_AVALID; 270 mii->mii_media_active = IFM_ETHER; 271 272 hwstatus = PHY_READ(sc, MII_MV_PHY_SPECIFIC_STATUS); 273 if (hwstatus & MV_STATUS_REAL_TIME_LINK_UP) { 274 mii->mii_media_status |= IFM_ACTIVE; 275 if (hwstatus & MV_STATUS_RESOLVED_SPEED_100) 276 mii->mii_media_active |= IFM_100_TX; 277 else 278 mii->mii_media_active |= IFM_10_T; 279 if (hwstatus & MV_STATUS_RESOLVED_DUPLEX_FULL) 280 mii->mii_media_active |= IFM_FDX; 281 } else { 282 mii->mii_media_active |= IFM_NONE; 283 /* XXX flush ATU only on link down transition */ 284 mvphy_flushatu(sc); 285 } 286 } 287 288 static void 289 mvphy_reset(struct mii_softc *sc) 290 { 291 292 /* XXX handle fixed media config */ 293 PHY_WRITE(sc, MII_BMCR, BMCR_RESET | BMCR_AUTOEN); 294 mvphy_switchconfig(sc, MV_PORT(sc)); 295 } 296 297 /* 298 * Configure switch for the specified port. 299 */ 300 static void 301 mvphy_switchconfig(struct mii_softc *sc, int port) 302 { 303 /* XXX router vs bridge */ 304 const struct mvPhyConfig *conf = &routerConfig[port]; 305 306 MV_WRITE(sc, conf->switchPortAddr, MV_PORT_BASED_VLAN_MAP, 307 conf->vlanSetting); 308 /* XXX administrative control of port enable? */ 309 MV_WRITE(sc, conf->switchPortAddr, MV_PORT_CONTROL, conf->portControl); 310 MV_WRITE(sc, conf->switchPortAddr, MV_PORT_ASSOCIATION_VECTOR, 1<<port); 311 } 312 313 /* 314 * Flush the Address Translation Unit (ATU). 315 */ 316 static void 317 mvphy_flushatu(struct mii_softc *sc) 318 { 319 uint16_t status; 320 int i; 321 322 printf("%s: %s\n", sc->mii_dev.dv_xname, __func__);/*XXX*/ 323 /* wait for any previous request to complete */ 324 /* XXX if busy defer to tick */ 325 /* XXX timeout */ 326 for (i = 0; i < 1000; i++) { 327 status = MV_READ(sc, MII_MV_SWITCH_GLOBAL_ADDR, 328 MV_ATU_OPERATION); 329 if (MV_ATU_IS_BUSY(status)) 330 break; 331 } 332 if (i != 1000) { 333 MV_WRITE(sc, MII_MV_SWITCH_GLOBAL_ADDR, MV_ATU_OPERATION, 334 MV_ATU_OP_FLUSH_ALL | MV_ATU_BUSY); 335 } else 336 printf("%s: timeout waiting for ATU flush\n", 337 sc->mii_dev.dv_xname); 338 } 339