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etphy.c revision 1.1 
      1 /*	$NetBSD: etphy.c,v 1.1 2010/11/13 00:47:24 jnemeth Exp $	*/
      2 /*	$OpenBSD: etphy.c,v 1.4 2008/04/02 20:12:58 brad Exp $	*/
      3 
      4 /*
      5  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to The DragonFly Project
      8  * by Sepherosa Ziehau <sepherosa (at) gmail.com>
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  *
     14  * 1. Redistributions of source code must retain the above copyright
     15  *    notice, this list of conditions and the following disclaimer.
     16  * 2. Redistributions in binary form must reproduce the above copyright
     17  *    notice, this list of conditions and the following disclaimer in
     18  *    the documentation and/or other materials provided with the
     19  *    distribution.
     20  * 3. Neither the name of The DragonFly Project nor the names of its
     21  *    contributors may be used to endorse or promote products derived
     22  *    from this software without specific, prior written permission.
     23  *
     24  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     25  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     26  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     27  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
     28  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
     29  * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
     30  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     31  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
     32  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
     33  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
     34  * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     35  * SUCH DAMAGE.
     36  *
     37  * $DragonFly: src/sys/dev/netif/mii_layer/truephy.c,v 1.1 2007/10/12 14:12:42 sephe Exp $
     38  */
     39 
     40 #include <sys/cdefs.h>
     41 __KERNEL_RCSID(0, "$NetBSD: etphy.c,v 1.1 2010/11/13 00:47:24 jnemeth Exp $");
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <sys/kernel.h>
     46 #include <sys/device.h>
     47 #include <sys/socket.h>
     48 
     49 #include <net/if.h>
     50 #include <net/if_media.h>
     51 
     52 #include <dev/mii/mii.h>
     53 #include <dev/mii/miivar.h>
     54 #include <dev/mii/miidevs.h>
     55 
     56 #define ETPHY_INDEX		0x10	/* XXX reserved in DS */
     57 #define ETPHY_INDEX_MAGIC	0x402
     58 #define ETPHY_DATA		0x11	/* XXX reserved in DS */
     59 
     60 #define ETPHY_CTRL		0x12
     61 #define ETPHY_CTRL_DIAG		0x0004
     62 #define ETPHY_CTRL_RSV1		0x0002	/* XXX reserved */
     63 #define ETPHY_CTRL_RSV0		0x0001	/* XXX reserved */
     64 
     65 #define ETPHY_CONF		0x16
     66 #define ETPHY_CONF_TXFIFO_MASK	0x3000
     67 #define ETPHY_CONF_TXFIFO_8	0x0000
     68 #define ETPHY_CONF_TXFIFO_16	0x1000
     69 #define ETPHY_CONF_TXFIFO_24	0x2000
     70 #define ETPHY_CONF_TXFIFO_32	0x3000
     71 
     72 #define ETPHY_SR		0x1a
     73 #define ETPHY_SR_SPD_MASK	0x0300
     74 #define ETPHY_SR_SPD_1000T	0x0200
     75 #define ETPHY_SR_SPD_100TX	0x0100
     76 #define ETPHY_SR_SPD_10T	0x0000
     77 #define ETPHY_SR_FDX		0x0080
     78 
     79 
     80 int	etphy_service(struct mii_softc *, struct mii_data *, int);
     81 void	etphy_attach(device_t, device_t, void *);
     82 int	etphy_match(device_t, cfdata_t, void *);
     83 void	etphy_reset(struct mii_softc *);
     84 void	etphy_status(struct mii_softc *);
     85 
     86 const struct mii_phy_funcs etphy_funcs = {
     87 	etphy_service, etphy_status, etphy_reset,
     88 };
     89 
     90 static const struct mii_phydesc etphys[] = {
     91 	{ MII_OUI_AGERE,	MII_MODEL_AGERE_ET1011,
     92 	  MII_STR_AGERE_ET1011 },
     93 	{ 0,			0,
     94 	  NULL },
     95 };
     96 
     97 CFATTACH_DECL_NEW(etphy, sizeof(struct mii_softc),
     98 	etphy_match, etphy_attach, mii_phy_detach, mii_phy_activate);
     99 
    100 static const struct etphy_dsp {
    101 	uint16_t	index;
    102 	uint16_t	data;
    103 } etphy_dspcode[] = {
    104 	{ 0x880b,	0x0926 },	/* AfeIfCreg4B1000Msbs */
    105 	{ 0x880c,	0x0926 },	/* AfeIfCreg4B100Msbs */
    106 	{ 0x880d,	0x0926 },	/* AfeIfCreg4B10Msbs */
    107 
    108 	{ 0x880e,	0xb4d3 },	/* AfeIfCreg4B1000Lsbs */
    109 	{ 0x880f,	0xb4d3 },	/* AfeIfCreg4B100Lsbs */
    110 	{ 0x8810,	0xb4d3 },	/* AfeIfCreg4B10Lsbs */
    111 
    112 	{ 0x8805,	0xb03e },	/* AfeIfCreg3B1000Msbs */
    113 	{ 0x8806,	0xb03e },	/* AfeIfCreg3B100Msbs */
    114 	{ 0x8807,	0xff00 },	/* AfeIfCreg3B10Msbs */
    115 
    116 	{ 0x8808,	0xe090 },	/* AfeIfCreg3B1000Lsbs */
    117 	{ 0x8809,	0xe110 },	/* AfeIfCreg3B100Lsbs */
    118 	{ 0x880a,	0x0000 },	/* AfeIfCreg3B10Lsbs */
    119 
    120 	{ 0x300d,	1      },	/* DisableNorm */
    121 
    122 	{ 0x280c,	0x0180 },	/* LinkHoldEnd */
    123 
    124 	{ 0x1c21,	0x0002 },	/* AlphaM */
    125 
    126 	{ 0x3821,	6      },	/* FfeLkgTx0 */
    127 	{ 0x381d,	1      },	/* FfeLkg1g4 */
    128 	{ 0x381e,	1      },	/* FfeLkg1g5 */
    129 	{ 0x381f,	1      },	/* FfeLkg1g6 */
    130 	{ 0x3820,	1      },	/* FfeLkg1g7 */
    131 
    132 	{ 0x8402,	0x01f0 },	/* Btinact */
    133 	{ 0x800e,	20     },	/* LftrainTime */
    134 	{ 0x800f,	24     },	/* DvguardTime */
    135 	{ 0x8010,	46     }	/* IdlguardTime */
    136 };
    137 
    138 int
    139 etphy_match(device_t parent, cfdata_t match, void *aux)
    140 {
    141 	struct mii_attach_args *ma = aux;
    142 
    143 	if (mii_phy_match(ma, etphys) != NULL)
    144 		return 10;
    145 
    146 	return 0;
    147 }
    148 
    149 void
    150 etphy_attach(device_t parent, device_t self, void *aux)
    151 {
    152 	struct mii_softc *sc = device_private(self);
    153 	struct mii_attach_args *ma = aux;
    154 	struct mii_data *mii = ma->mii_data;
    155 	const struct mii_phydesc *mpd;
    156 
    157 	mpd = mii_phy_match(ma, etphys);
    158 	aprint_normal(": %s, rev. %d\n", mpd->mpd_name, MII_REV(ma->mii_id2));
    159 
    160 	sc->mii_dev = self;
    161 	sc->mii_inst = mii->mii_instance;
    162 	sc->mii_phy = ma->mii_phyno;
    163 	sc->mii_funcs = &etphy_funcs;
    164 	sc->mii_mpd_model = MII_MODEL(ma->mii_id2);
    165 	sc->mii_pdata = mii;
    166 	sc->mii_flags = ma->mii_flags;
    167 
    168 	sc->mii_flags |= MIIF_NOISOLATE | MIIF_NOLOOP;
    169 
    170 	PHY_RESET(sc);
    171 
    172 	sc->mii_capabilities = PHY_READ(sc, MII_BMSR) & ma->mii_capmask;
    173 	if (sc->mii_capabilities & BMSR_EXTSTAT) {
    174 		sc->mii_extcapabilities = PHY_READ(sc, MII_EXTSR);
    175 		/* No 1000baseT half-duplex support */
    176 		sc->mii_extcapabilities &= ~EXTSR_1000THDX;
    177 	}
    178 	aprint_normal_dev(self, "");
    179 	if ((sc->mii_capabilities & BMSR_MEDIAMASK) == 0)
    180 		aprint_error("no media present");
    181 	else
    182 		mii_phy_add_media(sc);
    183 	aprint_normal("\n");
    184 
    185 	if (!pmf_device_register(self, NULL, mii_phy_resume))
    186 		aprint_error_dev(self, "couldn't establish power handler\n");
    187 }
    188 
    189 int
    190 etphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd)
    191 {
    192 	struct ifmedia_entry *ife = mii->mii_media.ifm_cur;
    193 	int bmcr;
    194 
    195 	switch (cmd) {
    196 	case MII_POLLSTAT:
    197 		/*
    198 		 * If we're not polling our PHY instance, just return.
    199 		 */
    200 		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
    201 			return 0;
    202 		break;
    203 
    204 	case MII_MEDIACHG:
    205 		/*
    206 		 * If the media indicates a different PHY instance,
    207 		 * isolate ourselves.
    208 		 */
    209 		if (IFM_INST(ife->ifm_media) != sc->mii_inst) {
    210 			bmcr = PHY_READ(sc, MII_BMCR);
    211 			PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_ISO);
    212 			return 0;
    213 		}
    214 
    215 		/*
    216 		 * If the interface is not up, don't do anything.
    217 		 */
    218 		if ((mii->mii_ifp->if_flags & IFF_UP) == 0)
    219 			break;
    220 
    221 		if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
    222 			bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_AUTOEN;
    223 			PHY_WRITE(sc, MII_BMCR, bmcr);
    224 			PHY_WRITE(sc, MII_BMCR, bmcr | BMCR_PDOWN);
    225 		}
    226 
    227 		mii_phy_setmedia(sc);
    228 
    229 		if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) {
    230 			bmcr = PHY_READ(sc, MII_BMCR) & ~BMCR_PDOWN;
    231 			PHY_WRITE(sc, MII_BMCR, bmcr);
    232 
    233 			if (IFM_SUBTYPE(ife->ifm_media) == IFM_1000_T) {
    234 				PHY_WRITE(sc, MII_BMCR,
    235 					  bmcr | BMCR_AUTOEN | BMCR_STARTNEG);
    236 			}
    237 		}
    238 		break;
    239 
    240 	case MII_TICK:
    241 		/*
    242 		 * If we're not currently selected, just return.
    243 		 */
    244 		if (IFM_INST(ife->ifm_media) != sc->mii_inst)
    245 			return 0;
    246 
    247 		if (mii_phy_tick(sc) == EJUSTRETURN)
    248 			return 0;
    249 		break;
    250 	}
    251 
    252 	/* Update the media status. */
    253 	mii_phy_status(sc);
    254 
    255 	/* Callback if something changed. */
    256 	mii_phy_update(sc, cmd);
    257 	return 0;
    258 }
    259 
    260 void
    261 etphy_reset(struct mii_softc *sc)
    262 {
    263 	int i;
    264 
    265 	for (i = 0; i < 2; ++i) {
    266 		PHY_READ(sc, MII_PHYIDR1);
    267 		PHY_READ(sc, MII_PHYIDR2);
    268 
    269 		PHY_READ(sc, ETPHY_CTRL);
    270 		PHY_WRITE(sc, ETPHY_CTRL,
    271 		    ETPHY_CTRL_DIAG | ETPHY_CTRL_RSV1);
    272 
    273 		PHY_WRITE(sc, ETPHY_INDEX, ETPHY_INDEX_MAGIC);
    274 		PHY_READ(sc, ETPHY_DATA);
    275 
    276 		PHY_WRITE(sc, ETPHY_CTRL, ETPHY_CTRL_RSV1);
    277 	}
    278 
    279 	PHY_READ(sc, MII_BMCR);
    280 	PHY_READ(sc, ETPHY_CTRL);
    281 	PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN | BMCR_PDOWN | BMCR_S1000);
    282 	PHY_WRITE(sc, ETPHY_CTRL,
    283 	    ETPHY_CTRL_DIAG | ETPHY_CTRL_RSV1 | ETPHY_CTRL_RSV0);
    284 
    285 #define N(arr)	(int)(sizeof(arr) / sizeof(arr[0]))
    286 
    287 	for (i = 0; i < N(etphy_dspcode); ++i) {
    288 		const struct etphy_dsp *dsp = &etphy_dspcode[i];
    289 
    290 		PHY_WRITE(sc, ETPHY_INDEX, dsp->index);
    291 		PHY_WRITE(sc, ETPHY_DATA, dsp->data);
    292 
    293 		PHY_WRITE(sc, ETPHY_INDEX, dsp->index);
    294 		PHY_READ(sc, ETPHY_DATA);
    295 	}
    296 
    297 #undef N
    298 
    299 	PHY_READ(sc, MII_BMCR);
    300 	PHY_READ(sc, ETPHY_CTRL);
    301 	PHY_WRITE(sc, MII_BMCR, BMCR_AUTOEN |  BMCR_S1000);
    302 	PHY_WRITE(sc, ETPHY_CTRL, ETPHY_CTRL_RSV1);
    303 
    304 	mii_phy_reset(sc);
    305 }
    306 
    307 void
    308 etphy_status(struct mii_softc *sc)
    309 {
    310 	struct mii_data *mii = sc->mii_pdata;
    311 	int bmsr, bmcr, sr;
    312 
    313 	mii->mii_media_status = IFM_AVALID;
    314 	mii->mii_media_active = IFM_ETHER;
    315 
    316 	sr = PHY_READ(sc, ETPHY_SR);
    317 	bmcr = PHY_READ(sc, MII_BMCR);
    318 
    319 	bmsr = PHY_READ(sc, MII_BMSR) | PHY_READ(sc, MII_BMSR);
    320 	if (bmsr & BMSR_LINK)
    321 		mii->mii_media_status |= IFM_ACTIVE;
    322 
    323 	if (bmcr & BMCR_AUTOEN) {
    324 		if ((bmsr & BMSR_ACOMP) == 0) {
    325 			mii->mii_media_active |= IFM_NONE;
    326 			return;
    327 		}
    328 	}
    329 
    330 	switch (sr & ETPHY_SR_SPD_MASK) {
    331 	case ETPHY_SR_SPD_1000T:
    332 		mii->mii_media_active |= IFM_1000_T;
    333 		break;
    334 	case ETPHY_SR_SPD_100TX:
    335 		mii->mii_media_active |= IFM_100_TX;
    336 		break;
    337 	case ETPHY_SR_SPD_10T:
    338 		mii->mii_media_active |= IFM_10_T;
    339 		break;
    340 	default:
    341 		mii->mii_media_active |= IFM_NONE;
    342 		return;
    343 	}
    344 
    345 	if (sr & ETPHY_SR_FDX)
    346 		mii->mii_media_active |= IFM_FDX;
    347 	else
    348 		mii->mii_media_active |= IFM_HDX;
    349 }
    350