1139749Simp/*- 254134Swpaul * Copyright (c) 1997, 1998, 1999 354134Swpaul * Bill Paul <wpaul@ee.columbia.edu>. All rights reserved. 454134Swpaul * 554134Swpaul * Redistribution and use in source and binary forms, with or without 654134Swpaul * modification, are permitted provided that the following conditions 754134Swpaul * are met: 854134Swpaul * 1. Redistributions of source code must retain the above copyright 954134Swpaul * notice, this list of conditions and the following disclaimer. 1054134Swpaul * 2. Redistributions in binary form must reproduce the above copyright 1154134Swpaul * notice, this list of conditions and the following disclaimer in the 1254134Swpaul * documentation and/or other materials provided with the distribution. 1354134Swpaul * 3. All advertising materials mentioning features or use of this software 1454134Swpaul * must display the following acknowledgement: 1554134Swpaul * This product includes software developed by Bill Paul. 1654134Swpaul * 4. Neither the name of the author nor the names of any co-contributors 1754134Swpaul * may be used to endorse or promote products derived from this software 1854134Swpaul * without specific prior written permission. 1954134Swpaul * 2054134Swpaul * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND 2154134Swpaul * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2254134Swpaul * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2354134Swpaul * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD 2454134Swpaul * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 2554134Swpaul * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 2654134Swpaul * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 2754134Swpaul * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 2854134Swpaul * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 2954134Swpaul * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 3054134Swpaul * THE POSSIBILITY OF SUCH DAMAGE. 3154134Swpaul */ 3254134Swpaul 33119418Sobrien#include <sys/cdefs.h> 34119418Sobrien__FBSDID("$FreeBSD$"); 35119418Sobrien 3654134Swpaul/* 3754134Swpaul * Pseudo-driver for internal NWAY support on DEC 21143 and workalike 38183505Smarius * controllers. Technically we're abusing the miibus code to handle 3954134Swpaul * media selection and NWAY support here since there is no MII 40183505Smarius * interface. However the logical operations are roughly the same, 4154134Swpaul * and the alternative is to create a fake MII interface in the driver, 4254134Swpaul * which is harder to do. 4354134Swpaul */ 4454134Swpaul 4554134Swpaul#include <sys/param.h> 4654134Swpaul#include <sys/systm.h> 4754134Swpaul#include <sys/kernel.h> 4854134Swpaul#include <sys/socket.h> 4954134Swpaul#include <sys/errno.h> 5074914Sjhb#include <sys/lock.h> 5154134Swpaul#include <sys/module.h> 5267365Sjhb#include <sys/mutex.h> 5354134Swpaul#include <sys/bus.h> 5454134Swpaul 5554134Swpaul#include <net/if.h> 5654134Swpaul#include <net/if_arp.h> 5754134Swpaul#include <net/if_media.h> 5854134Swpaul 5954134Swpaul#include <dev/mii/mii.h> 6054134Swpaul#include <dev/mii/miivar.h> 61109514Sobrien#include "miidevs.h" 6254134Swpaul 6354134Swpaul#include <machine/bus.h> 6454134Swpaul#include <machine/resource.h> 6554134Swpaul 66119285Simp#include <dev/pci/pcivar.h> 6754134Swpaul 68151435Simp#include <dev/dc/if_dcreg.h> 6954134Swpaul 7054134Swpaul#include "miibus_if.h" 7154134Swpaul 7254134Swpaul#define DC_SETBIT(sc, reg, x) \ 7354134Swpaul CSR_WRITE_4(sc, reg, \ 7454134Swpaul CSR_READ_4(sc, reg) | x) 7554134Swpaul 7654134Swpaul#define DC_CLRBIT(sc, reg, x) \ 7754134Swpaul CSR_WRITE_4(sc, reg, \ 7854134Swpaul CSR_READ_4(sc, reg) & ~x) 7954134Swpaul 8054134Swpaul#define MIIF_AUTOTIMEOUT 0x0004 8154134Swpaul 8254577Swpaul/* 8354577Swpaul * This is the subsystem ID for the built-in 21143 ethernet 84183505Smarius * in several Compaq Presario systems. Apparently these are 8554577Swpaul * 10Mbps only, so we need to treat them specially. 8654577Swpaul */ 8754577Swpaul#define COMPAQ_PRESARIO_ID 0xb0bb0e11 8854577Swpaul 89105135Salfredstatic int dcphy_probe(device_t); 90105135Salfredstatic int dcphy_attach(device_t); 9154134Swpaul 9254134Swpaulstatic device_method_t dcphy_methods[] = { 9354134Swpaul /* device interface */ 9454134Swpaul DEVMETHOD(device_probe, dcphy_probe), 9554134Swpaul DEVMETHOD(device_attach, dcphy_attach), 9695722Sphk DEVMETHOD(device_detach, mii_phy_detach), 9754134Swpaul DEVMETHOD(device_shutdown, bus_generic_shutdown), 98227908Smarius DEVMETHOD_END 9954134Swpaul}; 10054134Swpaul 10154134Swpaulstatic devclass_t dcphy_devclass; 10254134Swpaul 10354134Swpaulstatic driver_t dcphy_driver = { 10454134Swpaul "dcphy", 10554134Swpaul dcphy_methods, 10654134Swpaul sizeof(struct mii_softc) 10754134Swpaul}; 10854134Swpaul 10954134SwpaulDRIVER_MODULE(dcphy, miibus, dcphy_driver, dcphy_devclass, 0, 0); 11054134Swpaul 11192739Salfredstatic int dcphy_service(struct mii_softc *, struct mii_data *, int); 11292739Salfredstatic void dcphy_status(struct mii_softc *); 11392739Salfredstatic void dcphy_reset(struct mii_softc *); 11496026Sphkstatic int dcphy_auto(struct mii_softc *); 11554134Swpaul 116221407Smariusstatic const struct mii_phy_funcs dcphy_funcs = { 117221407Smarius dcphy_service, 118221407Smarius dcphy_status, 119221407Smarius dcphy_reset 120221407Smarius}; 121221407Smarius 122105135Salfredstatic int 123150763Simpdcphy_probe(device_t dev) 12454134Swpaul{ 12554134Swpaul struct mii_attach_args *ma; 12654134Swpaul 12754134Swpaul ma = device_get_ivars(dev); 12854134Swpaul 12954134Swpaul /* 13054134Swpaul * The dc driver will report the 21143 vendor and device 13154134Swpaul * ID to let us know that it wants us to attach. 13254134Swpaul */ 13354134Swpaul if (ma->mii_id1 != DC_VENDORID_DEC || 13454134Swpaul ma->mii_id2 != DC_DEVICEID_21143) 135183505Smarius return (ENXIO); 13654134Swpaul 13754134Swpaul device_set_desc(dev, "Intel 21143 NWAY media interface"); 13854134Swpaul 139160907Syongari return (BUS_PROBE_DEFAULT); 14054134Swpaul} 14154134Swpaul 142105135Salfredstatic int 143150763Simpdcphy_attach(device_t dev) 14454134Swpaul{ 14554134Swpaul struct mii_softc *sc; 14654134Swpaul struct dc_softc *dc_sc; 147159201Sjhb device_t brdev; 14854134Swpaul 14954134Swpaul sc = device_get_softc(dev); 15054134Swpaul 151221407Smarius mii_phy_dev_attach(dev, MIIF_NOISOLATE | MIIF_NOMANPAUSE, 152221407Smarius &dcphy_funcs, 0); 15354134Swpaul 154221407Smarius /*PHY_RESET(sc);*/ 155221407Smarius dc_sc = sc->mii_pdata->mii_ifp->if_softc; 15654134Swpaul CSR_WRITE_4(dc_sc, DC_10BTSTAT, 0); 15754134Swpaul CSR_WRITE_4(dc_sc, DC_10BTCTRL, 0); 15854134Swpaul 159159201Sjhb brdev = device_get_parent(sc->mii_dev); 160159201Sjhb switch (pci_get_subdevice(brdev) << 16 | pci_get_subvendor(brdev)) { 16154577Swpaul case COMPAQ_PRESARIO_ID: 16254134Swpaul /* Example of how to only allow 10Mbps modes. */ 163183505Smarius sc->mii_capabilities = BMSR_ANEG | BMSR_10TFDX | BMSR_10THDX; 16454134Swpaul break; 16554134Swpaul default: 166183505Smarius if (dc_sc->dc_pmode == DC_PMODE_SIA) 16766681Swpaul sc->mii_capabilities = 168183505Smarius BMSR_ANEG | BMSR_10TFDX | BMSR_10THDX; 169183505Smarius else 17066681Swpaul sc->mii_capabilities = 171183505Smarius BMSR_ANEG | BMSR_100TXFDX | BMSR_100TXHDX | 172183505Smarius BMSR_10TFDX | BMSR_10THDX; 17354134Swpaul break; 17454134Swpaul } 17554134Swpaul 176221407Smarius sc->mii_capabilities &= sc->mii_capmask; 17754134Swpaul device_printf(dev, " "); 178190117Smarius mii_phy_add_media(sc); 17954134Swpaul printf("\n"); 18054134Swpaul 18154134Swpaul MIIBUS_MEDIAINIT(sc->mii_dev); 182183505Smarius return (0); 18354134Swpaul} 18454134Swpaul 18584145Sjlemonstatic int 186150763Simpdcphy_service(struct mii_softc *sc, struct mii_data *mii, int cmd) 18754134Swpaul{ 18854134Swpaul struct dc_softc *dc_sc; 18954134Swpaul struct ifmedia_entry *ife = mii->mii_media.ifm_cur; 19054134Swpaul int reg; 19154134Swpaul u_int32_t mode; 19254134Swpaul 19354134Swpaul dc_sc = mii->mii_ifp->if_softc; 19454134Swpaul 19554134Swpaul switch (cmd) { 19654134Swpaul case MII_POLLSTAT: 19754134Swpaul break; 19854134Swpaul 19954134Swpaul case MII_MEDIACHG: 20054134Swpaul /* 20154134Swpaul * If the interface is not up, don't do anything. 20254134Swpaul */ 20354134Swpaul if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 20454134Swpaul break; 20554134Swpaul 20654134Swpaul mii->mii_media_active = IFM_NONE; 20754134Swpaul mode = CSR_READ_4(dc_sc, DC_NETCFG); 208183505Smarius mode &= ~(DC_NETCFG_FULLDUPLEX | DC_NETCFG_PORTSEL | 209183505Smarius DC_NETCFG_PCS | DC_NETCFG_SCRAMBLER | DC_NETCFG_SPEEDSEL); 21054134Swpaul 21154134Swpaul switch (IFM_SUBTYPE(ife->ifm_media)) { 21254134Swpaul case IFM_AUTO: 213221407Smarius /*PHY_RESET(sc);*/ 214221407Smarius (void)dcphy_auto(sc); 21554134Swpaul break; 21654134Swpaul case IFM_100_TX: 217221407Smarius PHY_RESET(sc); 21854134Swpaul DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 219183505Smarius mode |= DC_NETCFG_PORTSEL | DC_NETCFG_PCS | 22054134Swpaul DC_NETCFG_SCRAMBLER; 221217417Smarius if ((ife->ifm_media & IFM_FDX) != 0) 22254134Swpaul mode |= DC_NETCFG_FULLDUPLEX; 22354134Swpaul else 22454134Swpaul mode &= ~DC_NETCFG_FULLDUPLEX; 22554134Swpaul CSR_WRITE_4(dc_sc, DC_NETCFG, mode); 22654134Swpaul break; 22754134Swpaul case IFM_10_T: 22854134Swpaul DC_CLRBIT(dc_sc, DC_SIARESET, DC_SIA_RESET); 22954134Swpaul DC_CLRBIT(dc_sc, DC_10BTCTRL, 0xFFFF); 230217417Smarius if ((ife->ifm_media & IFM_FDX) != 0) 23154134Swpaul DC_SETBIT(dc_sc, DC_10BTCTRL, 0x7F3D); 23254134Swpaul else 23354134Swpaul DC_SETBIT(dc_sc, DC_10BTCTRL, 0x7F3F); 23454134Swpaul DC_SETBIT(dc_sc, DC_SIARESET, DC_SIA_RESET); 23554134Swpaul DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 23654134Swpaul mode &= ~DC_NETCFG_PORTSEL; 23754134Swpaul mode |= DC_NETCFG_SPEEDSEL; 238217417Smarius if ((ife->ifm_media & IFM_FDX) != 0) 23954134Swpaul mode |= DC_NETCFG_FULLDUPLEX; 24054134Swpaul else 24154134Swpaul mode &= ~DC_NETCFG_FULLDUPLEX; 24254134Swpaul CSR_WRITE_4(dc_sc, DC_NETCFG, mode); 24354134Swpaul break; 24454134Swpaul default: 245183505Smarius return (EINVAL); 24654134Swpaul } 24754134Swpaul break; 24854134Swpaul 24954134Swpaul case MII_TICK: 25054134Swpaul /* 25184145Sjlemon * Is the interface even up? 25254134Swpaul */ 25384145Sjlemon if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 25454134Swpaul return (0); 25554134Swpaul 25654134Swpaul /* 25784145Sjlemon * Only used for autonegotiation. 25854134Swpaul */ 25984145Sjlemon if (IFM_SUBTYPE(ife->ifm_media) != IFM_AUTO) 26084145Sjlemon break; 26154134Swpaul 26294994Smckay reg = CSR_READ_4(dc_sc, DC_10BTSTAT); 26361110Swpaul if (!(reg & DC_TSTAT_LS10) || !(reg & DC_TSTAT_LS100)) 26484145Sjlemon break; 26554134Swpaul 26661110Swpaul /* 26761110Swpaul * Only retry autonegotiation every 5 seconds. 26894994Smckay * 26994994Smckay * Otherwise, fall through to calling dcphy_status() 27094994Smckay * since real Intel 21143 chips don't show valid link 27194994Smckay * status until autonegotiation is switched off, and 27294994Smckay * that only happens in dcphy_status(). Without this, 273129845Smarius * successful autonegotiation is never recognised on 27494994Smckay * these chips. 27561110Swpaul */ 276128870Sandre if (++sc->mii_ticks <= 50) 27794994Smckay break; 27861110Swpaul 27954134Swpaul sc->mii_ticks = 0; 28096026Sphk dcphy_auto(sc); 28154134Swpaul 28254134Swpaul break; 28354134Swpaul } 28454134Swpaul 28554134Swpaul /* Update the media status. */ 286221407Smarius PHY_STATUS(sc); 28754134Swpaul 28854134Swpaul /* Callback if something changed. */ 28984145Sjlemon mii_phy_update(sc, cmd); 29054134Swpaul return (0); 29154134Swpaul} 29254134Swpaul 29384145Sjlemonstatic void 294150763Simpdcphy_status(struct mii_softc *sc) 29554134Swpaul{ 29654134Swpaul struct mii_data *mii = sc->mii_pdata; 297227686Smarius int anlpar, tstat; 29854134Swpaul struct dc_softc *dc_sc; 29954134Swpaul 30054134Swpaul dc_sc = mii->mii_ifp->if_softc; 30154134Swpaul 30254134Swpaul mii->mii_media_status = IFM_AVALID; 30354134Swpaul mii->mii_media_active = IFM_ETHER; 30454134Swpaul 30561290Swpaul if ((mii->mii_ifp->if_flags & IFF_UP) == 0) 30661290Swpaul return; 30761290Swpaul 308227686Smarius tstat = CSR_READ_4(dc_sc, DC_10BTSTAT); 309227686Smarius if (!(tstat & DC_TSTAT_LS10) || !(tstat & DC_TSTAT_LS100)) 31054134Swpaul mii->mii_media_status |= IFM_ACTIVE; 31154134Swpaul 31261110Swpaul if (CSR_READ_4(dc_sc, DC_10BTCTRL) & DC_TCTL_AUTONEGENBL) { 31354134Swpaul /* Erg, still trying, I guess... */ 31461110Swpaul if ((tstat & DC_TSTAT_ANEGSTAT) != DC_ASTAT_AUTONEGCMP) { 31561110Swpaul if ((DC_IS_MACRONIX(dc_sc) || DC_IS_PNICII(dc_sc)) && 31661110Swpaul (tstat & DC_TSTAT_ANEGSTAT) == DC_ASTAT_DISABLE) 31761110Swpaul goto skip; 31854134Swpaul mii->mii_media_active |= IFM_NONE; 31954134Swpaul return; 32054134Swpaul } 32154134Swpaul 32261110Swpaul if (tstat & DC_TSTAT_LP_CAN_NWAY) { 32361110Swpaul anlpar = tstat >> 16; 324173665Syongari if (anlpar & ANLPAR_TX_FD && 32561110Swpaul sc->mii_capabilities & BMSR_100TXFDX) 326183505Smarius mii->mii_media_active |= IFM_100_TX | IFM_FDX; 327173665Syongari else if (anlpar & ANLPAR_T4 && 328173665Syongari sc->mii_capabilities & BMSR_100T4) 329213384Smarius mii->mii_media_active |= IFM_100_T4 | IFM_HDX; 33054577Swpaul else if (anlpar & ANLPAR_TX && 33154577Swpaul sc->mii_capabilities & BMSR_100TXHDX) 332213384Smarius mii->mii_media_active |= IFM_100_TX | IFM_HDX; 33354134Swpaul else if (anlpar & ANLPAR_10_FD) 334183505Smarius mii->mii_media_active |= IFM_10_T | IFM_FDX; 33554134Swpaul else if (anlpar & ANLPAR_10) 336213384Smarius mii->mii_media_active |= IFM_10_T | IFM_HDX; 33754134Swpaul else 33854134Swpaul mii->mii_media_active |= IFM_NONE; 33954134Swpaul if (DC_IS_INTEL(dc_sc)) 34054134Swpaul DC_CLRBIT(dc_sc, DC_10BTCTRL, 34154134Swpaul DC_TCTL_AUTONEGENBL); 34254134Swpaul return; 34354134Swpaul } 344183505Smarius 34554134Swpaul /* 34654134Swpaul * If the other side doesn't support NWAY, then the 34754134Swpaul * best we can do is determine if we have a 10Mbps or 348183505Smarius * 100Mbps link. There's no way to know if the link 34954134Swpaul * is full or half duplex, so we default to half duplex 35054134Swpaul * and hope that the user is clever enough to manually 35154134Swpaul * change the media settings if we're wrong. 35254134Swpaul */ 353227686Smarius if (!(tstat & DC_TSTAT_LS100)) 354213384Smarius mii->mii_media_active |= IFM_100_TX | IFM_HDX; 355227686Smarius else if (!(tstat & DC_TSTAT_LS10)) 356213384Smarius mii->mii_media_active |= IFM_10_T | IFM_HDX; 35754134Swpaul else 35854134Swpaul mii->mii_media_active |= IFM_NONE; 35954134Swpaul if (DC_IS_INTEL(dc_sc)) 36054134Swpaul DC_CLRBIT(dc_sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 36154134Swpaul return; 36254134Swpaul } 36354134Swpaul 36461110Swpaulskip: 36566681Swpaul if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_SPEEDSEL) 36666681Swpaul mii->mii_media_active |= IFM_10_T; 36766681Swpaul else 36854134Swpaul mii->mii_media_active |= IFM_100_TX; 36954134Swpaul if (CSR_READ_4(dc_sc, DC_NETCFG) & DC_NETCFG_FULLDUPLEX) 37054134Swpaul mii->mii_media_active |= IFM_FDX; 371213384Smarius else 372213384Smarius mii->mii_media_active |= IFM_HDX; 37354134Swpaul} 37454134Swpaul 37554134Swpaulstatic int 376150763Simpdcphy_auto(struct mii_softc *mii) 37754134Swpaul{ 37854134Swpaul struct dc_softc *sc; 37954134Swpaul 38054134Swpaul sc = mii->mii_pdata->mii_ifp->if_softc; 38154134Swpaul 38296026Sphk DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); 38396026Sphk DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); 38496026Sphk DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 38596026Sphk if (mii->mii_capabilities & BMSR_100TXHDX) 38696026Sphk CSR_WRITE_4(sc, DC_10BTCTRL, 0x3FFFF); 38796026Sphk else 38896026Sphk CSR_WRITE_4(sc, DC_10BTCTRL, 0xFFFF); 38996026Sphk DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 39096026Sphk DC_SETBIT(sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); 39196026Sphk DC_SETBIT(sc, DC_10BTSTAT, DC_ASTAT_TXDISABLE); 39254134Swpaul 393183505Smarius return (EJUSTRETURN); 39454134Swpaul} 39554134Swpaul 39654134Swpaulstatic void 397150763Simpdcphy_reset(struct mii_softc *mii) 39854134Swpaul{ 39954134Swpaul struct dc_softc *sc; 40054134Swpaul 40154134Swpaul sc = mii->mii_pdata->mii_ifp->if_softc; 40254134Swpaul 40354134Swpaul DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); 40454134Swpaul DELAY(1000); 40554134Swpaul DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); 40654134Swpaul} 407