diff options
Diffstat (limited to 'sys/pci/if_pn.c')
| -rw-r--r-- | sys/pci/if_pn.c | 2326 |
1 files changed, 0 insertions, 2326 deletions
diff --git a/sys/pci/if_pn.c b/sys/pci/if_pn.c deleted file mode 100644 index 166afba..0000000 --- a/sys/pci/if_pn.c +++ /dev/null @@ -1,2326 +0,0 @@ -/* - * Copyright (c) 1997, 1998 - * Bill Paul <wpaul@ctr.columbia.edu>. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Bill Paul. - * 4. Neither the name of the author nor the names of any co-contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD - * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR - * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF - * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS - * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN - * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF - * THE POSSIBILITY OF SUCH DAMAGE. - * - * $FreeBSD$ - */ - -/* - * 82c168/82c169 PNIC fast ethernet PCI NIC driver - * - * Supports various network adapters based on the Lite-On PNIC - * PCI network controller chip including the LinkSys LNE100TX. - * - * Written by Bill Paul <wpaul@ctr.columbia.edu> - * Electrical Engineering Department - * Columbia University, New York City - */ - -/* - * The PNIC chip is a DEC tulip clone. This driver uses much of the - * same code from the driver for the Winbond chip (which is also a - * tulip clone) except for the MII, EEPROM and filter programming. - * - * Technically we could merge support for this chip into the 'de' - * driver, but it's such a mess that I'm afraid to go near it. - * - * The PNIC appears to support both an external MII and an internal - * transceiver. I think most 100Mbps implementations use a PHY attached - * the the MII. The LinkSys board that I have uses a Myson MTD972 - * 100BaseTX PHY. - */ - -#include <sys/param.h> -#include <sys/systm.h> -#include <sys/sockio.h> -#include <sys/mbuf.h> -#include <sys/malloc.h> -#include <sys/kernel.h> -#include <sys/socket.h> - -#include <net/if.h> -#include <net/if_arp.h> -#include <net/ethernet.h> -#include <net/if_dl.h> -#include <net/if_media.h> - -#include <net/bpf.h> - -#include "opt_bdg.h" -#ifdef BRIDGE -#include <net/bridge.h> -#endif - -#include <vm/vm.h> /* for vtophys */ -#include <vm/pmap.h> /* for vtophys */ -#include <machine/clock.h> /* for DELAY */ -#include <machine/bus_pio.h> -#include <machine/bus_memio.h> -#include <machine/bus.h> -#include <machine/resource.h> -#include <sys/bus.h> -#include <sys/rman.h> - -#include <pci/pcireg.h> -#include <pci/pcivar.h> - -#define PN_USEIOSPACE - -/* #define PN_BACKGROUND_AUTONEG */ - -#define PN_RX_BUG_WAR - -#include <pci/if_pnreg.h> - -#ifndef lint -static const char rcsid[] = - "$FreeBSD$"; -#endif - -/* - * Various supported device vendors/types and their names. - */ -static struct pn_type pn_devs[] = { - { PN_VENDORID, PN_DEVICEID_PNIC, - "82c168 PNIC 10/100BaseTX" }, - { PN_VENDORID, PN_DEVICEID_PNIC, - "82c169 PNIC 10/100BaseTX" }, - { 0, 0, NULL } -}; - -/* - * Various supported PHY vendors/types and their names. Note that - * this driver will work with pretty much any MII-compliant PHY, - * so failure to positively identify the chip is not a fatal error. - */ - -static struct pn_type pn_phys[] = { - { TI_PHY_VENDORID, TI_PHY_10BT, "<TI ThunderLAN 10BT (internal)>" }, - { TI_PHY_VENDORID, TI_PHY_100VGPMI, "<TI TNETE211 100VG Any-LAN>" }, - { NS_PHY_VENDORID, NS_PHY_83840A, "<National Semiconductor DP83840A>"}, - { LEVEL1_PHY_VENDORID, LEVEL1_PHY_LXT970, "<Level 1 LXT970>" }, - { INTEL_PHY_VENDORID, INTEL_PHY_82555, "<Intel 82555>" }, - { SEEQ_PHY_VENDORID, SEEQ_PHY_80220, "<SEEQ 80220>" }, - { 0, 0, "<MII-compliant physical interface>" } -}; - -static int pn_probe __P((device_t)); -static int pn_attach __P((device_t)); -static int pn_detach __P((device_t)); - -static int pn_newbuf __P((struct pn_softc *, - struct pn_chain_onefrag *, - struct mbuf *)); -static int pn_encap __P((struct pn_softc *, struct pn_chain *, - struct mbuf *)); - -#ifdef PN_RX_BUG_WAR -static void pn_rx_bug_war __P((struct pn_softc *, - struct pn_chain_onefrag *)); -#endif -static void pn_rxeof __P((struct pn_softc *)); -static void pn_rxeoc __P((struct pn_softc *)); -static void pn_txeof __P((struct pn_softc *)); -static void pn_txeoc __P((struct pn_softc *)); -static void pn_intr __P((void *)); -static void pn_start __P((struct ifnet *)); -static int pn_ioctl __P((struct ifnet *, u_long, caddr_t)); -static void pn_init __P((void *)); -static void pn_stop __P((struct pn_softc *)); -static void pn_watchdog __P((struct ifnet *)); -static void pn_shutdown __P((device_t)); -static int pn_ifmedia_upd __P((struct ifnet *)); -static void pn_ifmedia_sts __P((struct ifnet *, struct ifmediareq *)); - -static void pn_eeprom_getword __P((struct pn_softc *, u_int8_t, u_int16_t *)); -static void pn_read_eeprom __P((struct pn_softc *, caddr_t, int, - int, int)); -static u_int16_t pn_phy_readreg __P((struct pn_softc *, int)); -static void pn_phy_writereg __P((struct pn_softc *, u_int16_t, u_int16_t)); - -static void pn_autoneg_xmit __P((struct pn_softc *)); -static void pn_autoneg_mii __P((struct pn_softc *, int, int)); -static void pn_setmode_mii __P((struct pn_softc *, int)); -static void pn_getmode_mii __P((struct pn_softc *)); -static void pn_autoneg __P((struct pn_softc *, int, int)); -static void pn_setmode __P((struct pn_softc *, int)); -static void pn_setcfg __P((struct pn_softc *, u_int32_t)); -static u_int32_t pn_calchash __P((u_int8_t *)); -static void pn_setfilt __P((struct pn_softc *)); -static void pn_reset __P((struct pn_softc *)); -static int pn_list_rx_init __P((struct pn_softc *)); -static int pn_list_tx_init __P((struct pn_softc *)); - -#ifdef PN_USEIOSPACE -#define PN_RES SYS_RES_IOPORT -#define PN_RID PN_PCI_LOIO -#else -#define PN_RES SYS_RES_MEMORY -#define PN_RID PN_PCI_LOMEM -#endif - -static device_method_t pn_methods[] = { - /* Device interface */ - DEVMETHOD(device_probe, pn_probe), - DEVMETHOD(device_attach, pn_attach), - DEVMETHOD(device_detach, pn_detach), - DEVMETHOD(device_shutdown, pn_shutdown), - { 0, 0 } -}; - -static driver_t pn_driver = { - "pn", - pn_methods, - sizeof(struct pn_softc), -}; - -static devclass_t pn_devclass; - -DRIVER_MODULE(if_pn, pci, pn_driver, pn_devclass, 0, 0); - -#define PN_SETBIT(sc, reg, x) \ - CSR_WRITE_4(sc, reg, \ - CSR_READ_4(sc, reg) | (x)) - -#define PN_CLRBIT(sc, reg, x) \ - CSR_WRITE_4(sc, reg, \ - CSR_READ_4(sc, reg) & ~(x)) - -/* - * Read a word of data stored in the EEPROM at address 'addr.' - */ -static void pn_eeprom_getword(sc, addr, dest) - struct pn_softc *sc; - u_int8_t addr; - u_int16_t *dest; -{ - register int i; - u_int32_t r; - - CSR_WRITE_4(sc, PN_SIOCTL, PN_EE_READ|addr); - - for (i = 0; i < PN_TIMEOUT; i++) { - DELAY(1); - r = CSR_READ_4(sc, PN_SIO); - if (!(r & PN_SIO_BUSY)) { - *dest = (u_int16_t)(r & 0x0000FFFF); - return; - } - } - - return; - -} - -/* - * Read a sequence of words from the EEPROM. - */ -static void pn_read_eeprom(sc, dest, off, cnt, swap) - struct pn_softc *sc; - caddr_t dest; - int off; - int cnt; - int swap; -{ - int i; - u_int16_t word = 0, *ptr; - - for (i = 0; i < cnt; i++) { - pn_eeprom_getword(sc, off + i, &word); - ptr = (u_int16_t *)(dest + (i * 2)); - if (swap) - *ptr = ntohs(word); - else - *ptr = word; - } - - return; -} - -static u_int16_t pn_phy_readreg(sc, reg) - struct pn_softc *sc; - int reg; -{ - int i; - u_int32_t rval; - - CSR_WRITE_4(sc, PN_MII, - PN_MII_READ | (sc->pn_phy_addr << 23) | (reg << 18)); - - for (i = 0; i < PN_TIMEOUT; i++) { - DELAY(1); - rval = CSR_READ_4(sc, PN_MII); - if (!(rval & PN_MII_BUSY)) { - if ((u_int16_t)(rval & 0x0000FFFF) == 0xFFFF) - return(0); - else - return((u_int16_t)(rval & 0x0000FFFF)); - } - } - - return(0); -} - -static void pn_phy_writereg(sc, reg, data) - struct pn_softc *sc; - u_int16_t reg; - u_int16_t data; -{ - int i; - - CSR_WRITE_4(sc, PN_MII, - PN_MII_WRITE | (sc->pn_phy_addr << 23) | (reg << 18) | data); - - - for (i = 0; i < PN_TIMEOUT; i++) { - if (!(CSR_READ_4(sc, PN_MII) & PN_MII_BUSY)) - break; - } - - return; -} - -#define PN_POLY 0xEDB88320 -#define PN_BITS 9 - -static u_int32_t pn_calchash(addr) - u_int8_t *addr; -{ - u_int32_t idx, bit, data, crc; - - /* Compute CRC for the address value. */ - crc = 0xFFFFFFFF; /* initial value */ - - for (idx = 0; idx < 6; idx++) { - for (data = *addr++, bit = 0; bit < 8; bit++, data >>= 1) - crc = (crc >> 1) ^ (((crc ^ data) & 1) ? PN_POLY : 0); - } - - return (crc & ((1 << PN_BITS) - 1)); -} - -/* - * Initiate an autonegotiation session. - */ -static void pn_autoneg_xmit(sc) - struct pn_softc *sc; -{ - u_int16_t phy_sts; - - pn_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET); - DELAY(500); - while(pn_phy_readreg(sc, PHY_BMCR) - & PHY_BMCR_RESET); - - phy_sts = pn_phy_readreg(sc, PHY_BMCR); - phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; - pn_phy_writereg(sc, PHY_BMCR, phy_sts); - - return; -} - -/* - * Invoke autonegotiation on a PHY. - */ -static void pn_autoneg_mii(sc, flag, verbose) - struct pn_softc *sc; - int flag; - int verbose; -{ - u_int16_t phy_sts = 0, media, advert, ability; - struct ifnet *ifp; - struct ifmedia *ifm; - - ifm = &sc->ifmedia; - ifp = &sc->arpcom.ac_if; - - ifm->ifm_media = IFM_ETHER | IFM_AUTO; - - /* - * The 100baseT4 PHY on the 3c905-T4 has the 'autoneg supported' - * bit cleared in the status register, but has the 'autoneg enabled' - * bit set in the control register. This is a contradiction, and - * I'm not sure how to handle it. If you want to force an attempt - * to autoneg for 100baseT4 PHYs, #define FORCE_AUTONEG_TFOUR - * and see what happens. - */ -#ifndef FORCE_AUTONEG_TFOUR - /* - * First, see if autoneg is supported. If not, there's - * no point in continuing. - */ - phy_sts = pn_phy_readreg(sc, PHY_BMSR); - if (!(phy_sts & PHY_BMSR_CANAUTONEG)) { - if (verbose) - printf("pn%d: autonegotiation not supported\n", - sc->pn_unit); - ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX; - return; - } -#endif - - switch (flag) { - case PN_FLAG_FORCEDELAY: - /* - * XXX Never use this option anywhere but in the probe - * routine: making the kernel stop dead in its tracks - * for three whole seconds after we've gone multi-user - * is really bad manners. - */ - pn_autoneg_xmit(sc); - DELAY(5000000); - break; - case PN_FLAG_SCHEDDELAY: - /* - * Wait for the transmitter to go idle before starting - * an autoneg session, otherwise pn_start() may clobber - * our timeout, and we don't want to allow transmission - * during an autoneg session since that can screw it up. - */ - if (sc->pn_cdata.pn_tx_head != NULL) { - sc->pn_want_auto = 1; - return; - } - pn_autoneg_xmit(sc); - ifp->if_timer = 5; - sc->pn_autoneg = 1; - sc->pn_want_auto = 0; - return; - break; - case PN_FLAG_DELAYTIMEO: - ifp->if_timer = 0; - sc->pn_autoneg = 0; - break; - default: - printf("pn%d: invalid autoneg flag: %d\n", sc->pn_unit, flag); - return; - } - - if (pn_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_AUTONEGCOMP) { - if (verbose) - printf("pn%d: autoneg complete, ", sc->pn_unit); - phy_sts = pn_phy_readreg(sc, PHY_BMSR); - } else { - if (verbose) - printf("pn%d: autoneg not complete, ", sc->pn_unit); - } - - media = pn_phy_readreg(sc, PHY_BMCR); - - /* Link is good. Report modes and set duplex mode. */ - if (pn_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT) { - if (verbose) - printf("link status good "); - advert = pn_phy_readreg(sc, PHY_ANAR); - ability = pn_phy_readreg(sc, PHY_LPAR); - - if (advert & PHY_ANAR_100BT4 && ability & PHY_ANAR_100BT4) { - ifm->ifm_media = IFM_ETHER|IFM_100_T4; - media |= PHY_BMCR_SPEEDSEL; - media &= ~PHY_BMCR_DUPLEX; - printf("(100baseT4)\n"); - } else if (advert & PHY_ANAR_100BTXFULL && - ability & PHY_ANAR_100BTXFULL) { - ifm->ifm_media = IFM_ETHER|IFM_100_TX|IFM_FDX; - media |= PHY_BMCR_SPEEDSEL; - media |= PHY_BMCR_DUPLEX; - printf("(full-duplex, 100Mbps)\n"); - } else if (advert & PHY_ANAR_100BTXHALF && - ability & PHY_ANAR_100BTXHALF) { - ifm->ifm_media = IFM_ETHER|IFM_100_TX|IFM_HDX; - media |= PHY_BMCR_SPEEDSEL; - media &= ~PHY_BMCR_DUPLEX; - printf("(half-duplex, 100Mbps)\n"); - } else if (advert & PHY_ANAR_10BTFULL && - ability & PHY_ANAR_10BTFULL) { - ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_FDX; - media &= ~PHY_BMCR_SPEEDSEL; - media |= PHY_BMCR_DUPLEX; - printf("(full-duplex, 10Mbps)\n"); - } else if (advert & PHY_ANAR_10BTHALF && - ability & PHY_ANAR_10BTHALF) { - ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX; - media &= ~PHY_BMCR_SPEEDSEL; - media &= ~PHY_BMCR_DUPLEX; - printf("(half-duplex, 10Mbps)\n"); - } - - media &= ~PHY_BMCR_AUTONEGENBL; - - /* Set ASIC's duplex mode to match the PHY. */ - pn_setcfg(sc, ifm->ifm_media); - pn_phy_writereg(sc, PHY_BMCR, media); - } else { - if (verbose) - printf("no carrier\n"); - } - - pn_init(sc); - - if (sc->pn_tx_pend) { - sc->pn_autoneg = 0; - sc->pn_tx_pend = 0; - pn_start(ifp); - } - - return; -} - -static void pn_getmode_mii(sc) - struct pn_softc *sc; -{ - u_int16_t bmsr; - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - - bmsr = pn_phy_readreg(sc, PHY_BMSR); - if (bootverbose) - printf("pn%d: PHY status word: %x\n", sc->pn_unit, bmsr); - - /* fallback */ - sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX; - - if (bmsr & PHY_BMSR_10BTHALF) { - if (bootverbose) - printf("pn%d: 10Mbps half-duplex mode supported\n", - sc->pn_unit); - ifmedia_add(&sc->ifmedia, - IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL); - } - - if (bmsr & PHY_BMSR_10BTFULL) { - if (bootverbose) - printf("pn%d: 10Mbps full-duplex mode supported\n", - sc->pn_unit); - ifmedia_add(&sc->ifmedia, - IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); - sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_FDX; - } - - if (bmsr & PHY_BMSR_100BTXHALF) { - if (bootverbose) - printf("pn%d: 100Mbps half-duplex mode supported\n", - sc->pn_unit); - ifp->if_baudrate = 100000000; - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX, 0, NULL); - ifmedia_add(&sc->ifmedia, - IFM_ETHER|IFM_100_TX|IFM_HDX, 0, NULL); - sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_TX|IFM_HDX; - } - - if (bmsr & PHY_BMSR_100BTXFULL) { - if (bootverbose) - printf("pn%d: 100Mbps full-duplex mode supported\n", - sc->pn_unit); - ifp->if_baudrate = 100000000; - ifmedia_add(&sc->ifmedia, - IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL); - sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_TX|IFM_FDX; - } - - /* Some also support 100BaseT4. */ - if (bmsr & PHY_BMSR_100BT4) { - if (bootverbose) - printf("pn%d: 100baseT4 mode supported\n", sc->pn_unit); - ifp->if_baudrate = 100000000; - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_T4, 0, NULL); - sc->ifmedia.ifm_media = IFM_ETHER|IFM_100_T4; -#ifdef FORCE_AUTONEG_TFOUR - if (bootverbose) - printf("pn%d: forcing on autoneg support for BT4\n", - sc->pn_unit); - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0 NULL): - sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO; -#endif - } - - if (bmsr & PHY_BMSR_CANAUTONEG) { - if (bootverbose) - printf("pn%d: autoneg supported\n", sc->pn_unit); - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL); - sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO; - } - - return; -} - -static void pn_autoneg(sc, flag, verbose) - struct pn_softc *sc; - int flag; - int verbose; -{ - u_int32_t nway = 0, ability; - struct ifnet *ifp; - struct ifmedia *ifm; - - ifm = &sc->ifmedia; - ifp = &sc->arpcom.ac_if; - - ifm->ifm_media = IFM_ETHER | IFM_AUTO; - - switch (flag) { - case PN_FLAG_FORCEDELAY: - /* - * XXX Never use this option anywhere but in the probe - * routine: making the kernel stop dead in its tracks - * for three whole seconds after we've gone multi-user - * is really bad manners. - */ - CSR_WRITE_4(sc, PN_GEN, - PN_GEN_MUSTBEONE|PN_GEN_100TX_LOOP); - PN_CLRBIT(sc, PN_NWAY, PN_NWAY_AUTONEGRSTR); - PN_SETBIT(sc, PN_NWAY, PN_NWAY_AUTOENB); - DELAY(5000000); - break; - case PN_FLAG_SCHEDDELAY: - /* - * Wait for the transmitter to go idle before starting - * an autoneg session, otherwise pn_start() may clobber - * our timeout, and we don't want to allow transmission - * during an autoneg session since that can screw it up. - */ - if (sc->pn_cdata.pn_tx_head != NULL) { - sc->pn_want_auto = 1; - return; - } - CSR_WRITE_4(sc, PN_GEN, - PN_GEN_MUSTBEONE|PN_GEN_100TX_LOOP); - PN_CLRBIT(sc, PN_NWAY, PN_NWAY_AUTONEGRSTR); - PN_SETBIT(sc, PN_NWAY, PN_NWAY_AUTOENB); - ifp->if_timer = 5; - sc->pn_autoneg = 1; - sc->pn_want_auto = 0; - return; - break; - case PN_FLAG_DELAYTIMEO: - ifp->if_timer = 0; - sc->pn_autoneg = 0; - break; - default: - printf("pn%d: invalid autoneg flag: %d\n", sc->pn_unit, flag); - return; - } - - if (CSR_READ_4(sc, PN_NWAY) & PN_NWAY_LPAR) { - if (verbose) - printf("pn%d: autoneg complete, ", sc->pn_unit); - } else { - if (verbose) - printf("pn%d: autoneg not complete, ", sc->pn_unit); - } - - /* Link is good. Report modes and set duplex mode. */ - if (CSR_READ_4(sc, PN_ISR) & PN_ISR_LINKPASS) { - if (verbose) - printf("link status good "); - - ability = CSR_READ_4(sc, PN_NWAY); - if (ability & PN_NWAY_LPAR100T4) { - ifm->ifm_media = IFM_ETHER|IFM_100_T4; - nway = PN_NWAY_MODE_100T4; - printf("(100baseT4)\n"); - } else if (ability & PN_NWAY_LPAR100FULL) { - ifm->ifm_media = IFM_ETHER|IFM_100_TX|IFM_FDX; - nway = PN_NWAY_MODE_100FD; - printf("(full-duplex, 100Mbps)\n"); - } else if (ability & PN_NWAY_LPAR100HALF) { - ifm->ifm_media = IFM_ETHER|IFM_100_TX|IFM_HDX; - nway = PN_NWAY_MODE_100HD; - printf("(half-duplex, 100Mbps)\n"); - } else if (ability & PN_NWAY_LPAR10FULL) { - ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_FDX; - nway = PN_NWAY_MODE_10FD; - printf("(full-duplex, 10Mbps)\n"); - } else if (ability & PN_NWAY_LPAR10HALF) { - ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX; - nway = PN_NWAY_MODE_10HD; - printf("(half-duplex, 10Mbps)\n"); - } - - /* Set ASIC's duplex mode to match the PHY. */ - pn_setcfg(sc, ifm->ifm_media); - CSR_WRITE_4(sc, PN_NWAY, nway); - } else { - if (verbose) - printf("no carrier\n"); - } - - pn_init(sc); - - if (sc->pn_tx_pend) { - sc->pn_autoneg = 0; - sc->pn_tx_pend = 0; - pn_start(ifp); - } - - return; -} - -static void pn_setmode(sc, media) - struct pn_softc *sc; - int media; -{ - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - - /* - * If an autoneg session is in progress, stop it. - */ - if (sc->pn_autoneg) { - printf("pn%d: canceling autoneg session\n", sc->pn_unit); - ifp->if_timer = sc->pn_autoneg = sc->pn_want_auto = 0; - PN_CLRBIT(sc, PN_NWAY, PN_NWAY_AUTONEGRSTR); - } - - printf("pn%d: selecting NWAY, ", sc->pn_unit); - - if (IFM_SUBTYPE(media) == IFM_100_T4) { - printf("100Mbps/T4, half-duplex\n"); - } - - if (IFM_SUBTYPE(media) == IFM_100_TX) { - printf("100Mbps, "); - } - - if (IFM_SUBTYPE(media) == IFM_10_T) { - printf("10Mbps, "); - } - - if ((media & IFM_GMASK) == IFM_FDX) { - printf("full duplex\n"); - } else { - printf("half duplex\n"); - } - - pn_setcfg(sc, media); - - return; -} - -static void pn_setmode_mii(sc, media) - struct pn_softc *sc; - int media; -{ - u_int16_t bmcr; - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - - /* - * If an autoneg session is in progress, stop it. - */ - if (sc->pn_autoneg) { - printf("pn%d: canceling autoneg session\n", sc->pn_unit); - ifp->if_timer = sc->pn_autoneg = sc->pn_want_auto = 0; - bmcr = pn_phy_readreg(sc, PHY_BMCR); - bmcr &= ~PHY_BMCR_AUTONEGENBL; - pn_phy_writereg(sc, PHY_BMCR, bmcr); - } - - printf("pn%d: selecting MII, ", sc->pn_unit); - - bmcr = pn_phy_readreg(sc, PHY_BMCR); - - bmcr &= ~(PHY_BMCR_AUTONEGENBL|PHY_BMCR_SPEEDSEL| - PHY_BMCR_DUPLEX|PHY_BMCR_LOOPBK); - - if (IFM_SUBTYPE(media) == IFM_100_T4) { - printf("100Mbps/T4, half-duplex\n"); - bmcr |= PHY_BMCR_SPEEDSEL; - bmcr &= ~PHY_BMCR_DUPLEX; - } - - if (IFM_SUBTYPE(media) == IFM_100_TX) { - printf("100Mbps, "); - bmcr |= PHY_BMCR_SPEEDSEL; - } - - if (IFM_SUBTYPE(media) == IFM_10_T) { - printf("10Mbps, "); - bmcr &= ~PHY_BMCR_SPEEDSEL; - } - - if ((media & IFM_GMASK) == IFM_FDX) { - printf("full duplex\n"); - bmcr |= PHY_BMCR_DUPLEX; - } else { - printf("half duplex\n"); - bmcr &= ~PHY_BMCR_DUPLEX; - } - - pn_setcfg(sc, media); - pn_phy_writereg(sc, PHY_BMCR, bmcr); - - return; -} - -/* - * Programming the receiver filter on the tulip/PNIC is gross. You - * have to construct a special setup frame and download it to the - * chip via the transmit DMA engine. This routine is also somewhat - * gross, as the setup frame is sent synchronously rather than putting - * on the transmit queue. The transmitter has to be stopped, then we - * can download the frame and wait for the 'owned' bit to clear. - * - * We always program the chip using 'hash perfect' mode, i.e. one perfect - * address (our node address) and a 512-bit hash filter for multicast - * frames. We also sneak the broadcast address into the hash filter since - * we need that too. - */ -void pn_setfilt(sc) - struct pn_softc *sc; -{ - struct pn_desc *sframe; - u_int32_t h, *sp; - struct ifmultiaddr *ifma; - struct ifnet *ifp; - int i; - - ifp = &sc->arpcom.ac_if; - - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_TX_ON); - PN_SETBIT(sc, PN_ISR, PN_ISR_TX_IDLE); - - sframe = &sc->pn_cdata.pn_sframe; - sp = (u_int32_t *)&sc->pn_cdata.pn_sbuf; - bzero((char *)sp, PN_SFRAME_LEN); - - sframe->pn_status = PN_TXSTAT_OWN; - sframe->pn_next = vtophys(&sc->pn_ldata->pn_tx_list[0]); - sframe->pn_data = vtophys(&sc->pn_cdata.pn_sbuf); - sframe->pn_ctl = PN_SFRAME_LEN | PN_TXCTL_TLINK | - PN_TXCTL_SETUP | PN_FILTER_HASHPERF; - - /* If we want promiscuous mode, set the allframes bit. */ - if (ifp->if_flags & IFF_PROMISC) - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_RX_PROMISC); - else - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_RX_PROMISC); - - if (ifp->if_flags & IFF_ALLMULTI) - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_RX_ALLMULTI); - - for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL; - ifma = ifma->ifma_link.le_next) { - if (ifma->ifma_addr->sa_family != AF_LINK) - continue; - h = pn_calchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); - sp[h >> 4] |= 1 << (h & 0xF); - } - - if (ifp->if_flags & IFF_BROADCAST) { - h = pn_calchash(etherbroadcastaddr); - sp[h >> 4] |= 1 << (h & 0xF); - } - - sp[39] = ((u_int16_t *)sc->arpcom.ac_enaddr)[0]; - sp[40] = ((u_int16_t *)sc->arpcom.ac_enaddr)[1]; - sp[41] = ((u_int16_t *)sc->arpcom.ac_enaddr)[2]; - - CSR_WRITE_4(sc, PN_TXADDR, vtophys(sframe)); - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_TX_ON); - CSR_WRITE_4(sc, PN_TXSTART, 0xFFFFFFFF); - - /* - * Wait for chip to clear the 'own' bit. - */ - for (i = 0; i < PN_TIMEOUT; i++) { - DELAY(10); - if (sframe->pn_status != PN_TXSTAT_OWN) - break; - } - - if (i == PN_TIMEOUT) - printf("pn%d: failed to send setup frame\n", sc->pn_unit); - - PN_SETBIT(sc, PN_ISR, PN_ISR_TX_NOBUF|PN_ISR_TX_IDLE); - - return; -} - -/* - * In order to fiddle with the - * 'full-duplex' and '100Mbps' bits in the netconfig register, we - * first have to put the transmit and/or receive logic in the idle state. - */ -static void pn_setcfg(sc, media) - struct pn_softc *sc; - u_int32_t media; -{ - int i, restart = 0; - - if (CSR_READ_4(sc, PN_NETCFG) & (PN_NETCFG_TX_ON|PN_NETCFG_RX_ON)) { - restart = 1; - PN_CLRBIT(sc, PN_NETCFG, (PN_NETCFG_TX_ON|PN_NETCFG_RX_ON)); - - for (i = 0; i < PN_TIMEOUT; i++) { - DELAY(10); - if ((CSR_READ_4(sc, PN_ISR) & PN_ISR_TX_IDLE) && - (CSR_READ_4(sc, PN_ISR) & PN_ISR_RX_IDLE)) - break; - } - - if (i == PN_TIMEOUT) - printf("pn%d: failed to force tx and " - "rx to idle state\n", sc->pn_unit); - - } - - if (IFM_SUBTYPE(media) == IFM_100_TX) { - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_SPEEDSEL); - if (sc->pn_pinfo == NULL) { - CSR_WRITE_4(sc, PN_GEN, PN_GEN_MUSTBEONE| - PN_GEN_SPEEDSEL|PN_GEN_100TX_LOOP); - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_PCS| - PN_NETCFG_SCRAMBLER|PN_NETCFG_MIIENB); - PN_SETBIT(sc, PN_NWAY, PN_NWAY_SPEEDSEL); - } - } else { - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_SPEEDSEL); - if (sc->pn_pinfo == NULL) { - CSR_WRITE_4(sc, PN_GEN, - PN_GEN_MUSTBEONE|PN_GEN_100TX_LOOP); - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_PCS| - PN_NETCFG_SCRAMBLER|PN_NETCFG_MIIENB); - PN_CLRBIT(sc, PN_NWAY, PN_NWAY_SPEEDSEL); - } - } - - if ((media & IFM_GMASK) == IFM_FDX) { - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_FULLDUPLEX); - if (sc->pn_pinfo == NULL) - PN_SETBIT(sc, PN_NWAY, PN_NWAY_DUPLEX); - } else { - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_FULLDUPLEX); - if (sc->pn_pinfo == NULL) - PN_CLRBIT(sc, PN_NWAY, PN_NWAY_DUPLEX); - } - - if (restart) - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_TX_ON|PN_NETCFG_RX_ON); - - return; -} - -static void pn_reset(sc) - struct pn_softc *sc; -{ - register int i; - - PN_SETBIT(sc, PN_BUSCTL, PN_BUSCTL_RESET); - - for (i = 0; i < PN_TIMEOUT; i++) { - DELAY(10); - if (!(CSR_READ_4(sc, PN_BUSCTL) & PN_BUSCTL_RESET)) - break; - } - if (i == PN_TIMEOUT) - printf("pn%d: reset never completed!\n", sc->pn_unit); - - /* Wait a little while for the chip to get its brains in order. */ - DELAY(1000); - return; -} - -/* - * Probe for a Lite-On PNIC chip. Check the PCI vendor and device - * IDs against our list and return a device name if we find a match. - */ -static int pn_probe(dev) - device_t dev; -{ - struct pn_type *t; - u_int32_t rev; - - t = pn_devs; - - while(t->pn_name != NULL) { - if ((pci_get_vendor(dev) == t->pn_vid) && - (pci_get_device(dev) == t->pn_did)) { - if (t->pn_did == PN_DEVICEID_PNIC) { - rev = pci_read_config(dev, - PN_PCI_REVISION, 4) & 0xFF; - switch(rev & PN_REVMASK) { - case PN_REVID_82C168: - device_set_desc(dev, t->pn_name); - return(0); - break; - case PN_REVID_82C169: - t++; - device_set_desc(dev, t->pn_name); - return(0); - default: - printf("unknown PNIC rev: %x\n", rev); - break; - } - } - device_set_desc(dev, t->pn_name); - return(0); - } - t++; - } - - return(ENXIO); -} - -/* - * Attach the interface. Allocate softc structures, do ifmedia - * setup and ethernet/BPF attach. - */ -static int pn_attach(dev) - device_t dev; -{ - int s, i; - u_char eaddr[ETHER_ADDR_LEN]; - u_int32_t command; - struct pn_softc *sc; - struct ifnet *ifp; - int media = IFM_ETHER|IFM_100_TX|IFM_FDX; - unsigned int round; - caddr_t roundptr; - struct pn_type *p; - u_int16_t phy_vid, phy_did, phy_sts; -#ifdef PN_RX_BUG_WAR - u_int32_t revision = 0; -#endif - int unit, error = 0, rid; - - s = splimp(); - - sc = device_get_softc(dev); - unit = device_get_unit(dev); - bzero(sc, sizeof(struct pn_softc)); - - /* - * Handle power management nonsense. - */ - command = pci_read_config(dev, PN_PCI_CAPID, 4) & 0x000000FF; - if (command == 0x01) { - - command = pci_read_config(dev, PN_PCI_PWRMGMTCTRL, 4); - if (command & PN_PSTATE_MASK) { - u_int32_t iobase, membase, irq; - - /* Save important PCI config data. */ - iobase = pci_read_config(dev, PN_PCI_LOIO, 4); - membase = pci_read_config(dev, PN_PCI_LOMEM, 4); - irq = pci_read_config(dev, PN_PCI_INTLINE, 4); - - /* Reset the power state. */ - printf("pn%d: chip is in D%d power mode " - "-- setting to D0\n", unit, command & PN_PSTATE_MASK); - command &= 0xFFFFFFFC; - pci_write_config(dev, PN_PCI_PWRMGMTCTRL, command, 4); - - /* Restore PCI config data. */ - pci_write_config(dev, PN_PCI_LOIO, iobase, 4); - pci_write_config(dev, PN_PCI_LOMEM, membase, 4); - pci_write_config(dev, PN_PCI_INTLINE, irq, 4); - } - } - - /* - * Map control/status registers. - */ - command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); - command |= (PCIM_CMD_PORTEN|PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN); - pci_write_config(dev, PCI_COMMAND_STATUS_REG, command, 4); - command = pci_read_config(dev, PCI_COMMAND_STATUS_REG, 4); - -#ifdef PN_USEIOSPACE - if (!(command & PCIM_CMD_PORTEN)) { - printf("pn%d: failed to enable I/O ports!\n", unit); - error = ENXIO; - goto fail; - } -#else - if (!(command & PCIM_CMD_MEMEN)) { - printf("pn%d: failed to enable memory mapping!\n", unit); - error = ENXIO; - goto fail; - } -#endif - - rid = PN_RID; - sc->pn_res = bus_alloc_resource(dev, PN_RES, &rid, - 0, ~0, 1, RF_ACTIVE); - - if (sc->pn_res == NULL) { - printf ("pn%d: couldn't map ports/memory\n", unit); - error = ENXIO; - goto fail; - } - - sc->pn_btag = rman_get_bustag(sc->pn_res); - sc->pn_bhandle = rman_get_bushandle(sc->pn_res); - - /* Allocate interrupt */ - rid = 0; - sc->pn_irq = bus_alloc_resource(dev, SYS_RES_IRQ, &rid, 0, ~0, 1, - RF_SHAREABLE | RF_ACTIVE); - - if (sc->pn_irq == NULL) { - printf("pn%d: couldn't map interrupt\n", unit); - bus_release_resource(dev, PN_RES, PN_RID, sc->pn_res); - error = ENXIO; - goto fail; - } - - error = bus_setup_intr(dev, sc->pn_irq, INTR_TYPE_NET, - pn_intr, sc, &sc->pn_intrhand); - - if (error) { - bus_release_resource(dev, SYS_RES_IRQ, 0, sc->pn_res); - bus_release_resource(dev, PN_RES, PN_RID, sc->pn_res); - printf("pn%d: couldn't set up irq\n", unit); - goto fail; - } - - /* Save the cache line size. */ - sc->pn_cachesize = pci_read_config(dev, PN_PCI_CACHELEN, 4) & 0xFF; - - /* Reset the adapter. */ - pn_reset(sc); - - /* - * Get station address from the EEPROM. - */ - pn_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1); - - /* - * A PNIC chip was detected. Inform the world. - */ - printf("pn%d: Ethernet address: %6D\n", unit, eaddr, ":"); - - sc->pn_unit = unit; - bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); - - sc->pn_ldata_ptr = malloc(sizeof(struct pn_list_data) + 8, - M_DEVBUF, M_NOWAIT); - if (sc->pn_ldata_ptr == NULL) { - printf("pn%d: no memory for list buffers!\n", unit); - bus_teardown_intr(dev, sc->pn_irq, sc->pn_intrhand); - bus_release_resource(dev, SYS_RES_IRQ, 0, sc->pn_res); - bus_release_resource(dev, PN_RES, PN_RID, sc->pn_res); - error = ENXIO; - goto fail; - } - - sc->pn_ldata = (struct pn_list_data *)sc->pn_ldata_ptr; - round = (uintptr_t)sc->pn_ldata_ptr & 0xF; - roundptr = sc->pn_ldata_ptr; - for (i = 0; i < 8; i++) { - if (round % 8) { - round++; - roundptr++; - } else - break; - } - sc->pn_ldata = (struct pn_list_data *)roundptr; - bzero(sc->pn_ldata, sizeof(struct pn_list_data)); - -#ifdef PN_RX_BUG_WAR - revision = pci_read_config(dev, PN_PCI_REVISION, 4) & 0x000000FF; - if (revision == PN_169B_REV || revision == PN_169_REV || - (revision & 0xF0) == PN_168_REV) { - sc->pn_rx_war = 1; - sc->pn_rx_buf = malloc(PN_RXLEN * 5, M_DEVBUF, M_NOWAIT); - if (sc->pn_rx_buf == NULL) { - printf("pn%d: no memory for workaround buffer\n", unit); - bus_teardown_intr(dev, sc->pn_irq, sc->pn_intrhand); - bus_release_resource(dev, SYS_RES_IRQ, 0, sc->pn_res); - bus_release_resource(dev, PN_RES, PN_RID, sc->pn_res); - free(sc->pn_ldata_ptr, M_DEVBUF); - error = ENXIO; - goto fail; - } - } else { - sc->pn_rx_war = 0; - } -#endif - - ifp = &sc->arpcom.ac_if; - ifp->if_softc = sc; - ifp->if_unit = unit; - ifp->if_name = "pn"; - ifp->if_mtu = ETHERMTU; - ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; - ifp->if_ioctl = pn_ioctl; - ifp->if_output = ether_output; - ifp->if_start = pn_start; - ifp->if_watchdog = pn_watchdog; - ifp->if_init = pn_init; - ifp->if_baudrate = 10000000; - ifp->if_snd.ifq_maxlen = PN_TX_LIST_CNT - 1; - - ifmedia_init(&sc->ifmedia, 0, pn_ifmedia_upd, pn_ifmedia_sts); - - if (bootverbose) - printf("pn%d: probing for a PHY\n", sc->pn_unit); - for (i = PN_PHYADDR_MIN; i < PN_PHYADDR_MAX + 1; i++) { - if (bootverbose) - printf("pn%d: checking address: %d\n", - sc->pn_unit, i); - sc->pn_phy_addr = i; - pn_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET); - DELAY(500); - while(pn_phy_readreg(sc, PHY_BMCR) - & PHY_BMCR_RESET); - if ((phy_sts = pn_phy_readreg(sc, PHY_BMSR))) - break; - } - if (phy_sts) { - phy_vid = pn_phy_readreg(sc, PHY_VENID); - phy_did = pn_phy_readreg(sc, PHY_DEVID); - if (bootverbose) - printf("pn%d: found PHY at address %d, ", - sc->pn_unit, sc->pn_phy_addr); - if (bootverbose) - printf("vendor id: %x device id: %x\n", - phy_vid, phy_did); - p = pn_phys; - while(p->pn_vid) { - if (phy_vid == p->pn_vid && - (phy_did | 0x000F) == p->pn_did) { - sc->pn_pinfo = p; - break; - } - p++; - } - if (sc->pn_pinfo == NULL) - sc->pn_pinfo = &pn_phys[PHY_UNKNOWN]; - if (bootverbose) - printf("pn%d: PHY type: %s\n", - sc->pn_unit, sc->pn_pinfo->pn_name); - - pn_getmode_mii(sc); - if (cold) { - pn_autoneg_mii(sc, PN_FLAG_FORCEDELAY, 1); - pn_stop(sc); - } else { - pn_init(sc); - pn_autoneg_mii(sc, PN_FLAG_SCHEDDELAY, 1); - } - } else { - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL); - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX, 0, NULL); - ifmedia_add(&sc->ifmedia, - IFM_ETHER|IFM_100_TX|IFM_HDX, 0, NULL); - ifmedia_add(&sc->ifmedia, - IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL); - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_T4, 0, NULL); - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL); - pn_init(sc); - if (cold) { - pn_autoneg(sc, PN_FLAG_FORCEDELAY, 1); - pn_stop(sc); - } else { - pn_init(sc); - pn_autoneg(sc, PN_FLAG_SCHEDDELAY, 1); - } - } - - media = sc->ifmedia.ifm_media; - ifmedia_set(&sc->ifmedia, media); - - /* - * Call MI attach routines. - */ - if_attach(ifp); - ether_ifattach(ifp); - - bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); - -fail: - splx(s); - return(error); -} - -static int pn_detach(dev) - device_t dev; -{ - struct pn_softc *sc; - struct ifnet *ifp; - int s; - - s = splimp(); - - sc = device_get_softc(dev); - ifp = &sc->arpcom.ac_if; - - if_detach(ifp); - pn_stop(sc); - - bus_teardown_intr(dev, sc->pn_irq, sc->pn_intrhand); - bus_release_resource(dev, SYS_RES_IRQ, 0, sc->pn_res); - bus_release_resource(dev, PN_RES, PN_RID, sc->pn_res); - - free(sc->pn_ldata_ptr, M_DEVBUF); -#ifdef PN_RX_BUG_WAR - if (sc->pn_rx_war) - free(sc->pn_rx_buf, M_DEVBUF); -#endif - ifmedia_removeall(&sc->ifmedia); - - splx(s); - - return(0); -} - -/* - * Initialize the transmit descriptors. - */ -static int pn_list_tx_init(sc) - struct pn_softc *sc; -{ - struct pn_chain_data *cd; - struct pn_list_data *ld; - int i; - - cd = &sc->pn_cdata; - ld = sc->pn_ldata; - for (i = 0; i < PN_TX_LIST_CNT; i++) { - cd->pn_tx_chain[i].pn_ptr = &ld->pn_tx_list[i]; - if (i == (PN_TX_LIST_CNT - 1)) - cd->pn_tx_chain[i].pn_nextdesc = - &cd->pn_tx_chain[0]; - else - cd->pn_tx_chain[i].pn_nextdesc = - &cd->pn_tx_chain[i + 1]; - } - - cd->pn_tx_free = &cd->pn_tx_chain[0]; - cd->pn_tx_tail = cd->pn_tx_head = NULL; - - return(0); -} - - -/* - * Initialize the RX descriptors and allocate mbufs for them. Note that - * we arrange the descriptors in a closed ring, so that the last descriptor - * points back to the first. - */ -static int pn_list_rx_init(sc) - struct pn_softc *sc; -{ - struct pn_chain_data *cd; - struct pn_list_data *ld; - int i; - - cd = &sc->pn_cdata; - ld = sc->pn_ldata; - - for (i = 0; i < PN_RX_LIST_CNT; i++) { - cd->pn_rx_chain[i].pn_ptr = - (struct pn_desc *)&ld->pn_rx_list[i]; - if (pn_newbuf(sc, &cd->pn_rx_chain[i], NULL) == ENOBUFS) - return(ENOBUFS); - if (i == (PN_RX_LIST_CNT - 1)) { - cd->pn_rx_chain[i].pn_nextdesc = &cd->pn_rx_chain[0]; - ld->pn_rx_list[i].pn_next = - vtophys(&ld->pn_rx_list[0]); - } else { - cd->pn_rx_chain[i].pn_nextdesc = &cd->pn_rx_chain[i + 1]; - ld->pn_rx_list[i].pn_next = - vtophys(&ld->pn_rx_list[i + 1]); - } - } - - cd->pn_rx_head = &cd->pn_rx_chain[0]; - - return(0); -} - -/* - * Initialize an RX descriptor and attach an MBUF cluster. - * Note: the length fields are only 11 bits wide, which means the - * largest size we can specify is 2047. This is important because - * MCLBYTES is 2048, so we have to subtract one otherwise we'll - * overflow the field and make a mess. - */ -static int pn_newbuf(sc, c, m) - struct pn_softc *sc; - struct pn_chain_onefrag *c; - struct mbuf *m; -{ - struct mbuf *m_new = NULL; - - if (m == NULL) { - MGETHDR(m_new, M_DONTWAIT, MT_DATA); - if (m_new == NULL) { - printf("pn%d: no memory for rx list " - "-- packet dropped!\n", sc->pn_unit); - return(ENOBUFS); - } - - MCLGET(m_new, M_DONTWAIT); - if (!(m_new->m_flags & M_EXT)) { - printf("pn%d: no memory for rx list -- " - "packet dropped!\n", sc->pn_unit); - m_freem(m_new); - return(ENOBUFS); - } - m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; - } else { - m_new = m; - m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; - m_new->m_data = m_new->m_ext.ext_buf; - } - - /* - * Leave a couple of empty leading bytes; we'll need them later - * when we fix up things for proper payload alignment. - */ - m_adj(m_new, sizeof(u_int64_t)); - -#ifdef PN_RX_BUG_WAR - /* - * Zero the buffer. This is part of the workaround for the - * promiscuous mode bug in the revision 33 PNIC chips. - */ - if (sc->pn_rx_war) - bzero((char *)mtod(m_new, char *), m_new->m_len); -#endif - - c->pn_mbuf = m_new; - c->pn_ptr->pn_data = vtophys(mtod(m_new, caddr_t)); - c->pn_ptr->pn_ctl = PN_RXCTL_RLINK | PN_RXLEN; - c->pn_ptr->pn_status = PN_RXSTAT; - - return(0); -} - -#ifdef PN_RX_BUG_WAR -/* - * Grrrrr. - * The PNIC chip has a terrible bug in it that manifests itself during - * periods of heavy activity. The exact mode of failure if difficult to - * pinpoint: sometimes it only happens in promiscuous mode, sometimes it - * will happen on slow machines. The bug is that sometimes instead of - * uploading one complete frame during reception, it uploads what looks - * like the entire contents of its FIFO memory. The frame we want is at - * the end of the whole mess, but we never know exactly how much data has - * been uploaded, so salvaging the frame is hard. - * - * There is only one way to do it reliably, and it's disgusting. - * Here's what we know: - * - * - We know there will always be somewhere between one and three extra - * descriptors uploaded. - * - * - We know the desired received frame will always be at the end of the - * total data upload. - * - * - We know the size of the desired received frame because it will be - * provided in the length field of the status word in the last descriptor. - * - * Here's what we do: - * - * - When we allocate buffers for the receive ring, we bzero() them. - * This means that we know that the buffer contents should be all - * zeros, except for data uploaded by the chip. - * - * - We also force the PNIC chip to upload frames that include the - * ethernet CRC at the end. - * - * - We gather all of the bogus frame data into a single buffer. - * - * - We then position a pointer at the end of this buffer and scan - * backwards until we encounter the first non-zero byte of data. - * This is the end of the received frame. We know we will encounter - * some data at the end of the frame because the CRC will always be - * there, so even if the sender transmits a packet of all zeros, - * we won't be fooled. - * - * - We know the size of the actual received frame, so we subtract - * that value from the current pointer location. This brings us - * to the start of the actual received packet. - * - * - We copy this into an mbuf and pass it on, along with the actual - * frame length. - * - * The performance hit is tremendous, but it beats dropping frames all - * the time. - */ - -#define PN_WHOLEFRAME (PN_RXSTAT_FIRSTFRAG|PN_RXSTAT_LASTFRAG) -static void pn_rx_bug_war(sc, cur_rx) - struct pn_softc *sc; - struct pn_chain_onefrag *cur_rx; -{ - struct pn_chain_onefrag *c; - unsigned char *ptr; - int total_len; - u_int32_t rxstat = 0; - - c = sc->pn_rx_bug_save; - ptr = sc->pn_rx_buf; - bzero(ptr, sizeof(PN_RXLEN * 5)); - - /* Copy all the bytes from the bogus buffers. */ - while ((c->pn_ptr->pn_status & PN_WHOLEFRAME) != PN_WHOLEFRAME) { - rxstat = c->pn_ptr->pn_status; - m_copydata(c->pn_mbuf, 0, PN_RXLEN, ptr); - ptr += PN_RXLEN; - if (c == cur_rx) - break; - if (rxstat & PN_RXSTAT_LASTFRAG) - break; - c->pn_ptr->pn_status = PN_RXSTAT; - c->pn_ptr->pn_ctl = PN_RXCTL_RLINK | PN_RXLEN; - bzero((char *)mtod(c->pn_mbuf, char *), MCLBYTES); - c = c->pn_nextdesc; - } - - /* Find the length of the actual receive frame. */ - total_len = PN_RXBYTES(rxstat); - - /* Scan backwards until we hit a non-zero byte. */ - while(*ptr == 0x00) - ptr--; - - /* Round off. */ - if ((uintptr_t)(ptr) & 0x3) - ptr -= 1; - - /* Now find the start of the frame. */ - ptr -= total_len; - if (ptr < sc->pn_rx_buf) - ptr = sc->pn_rx_buf; - - /* - * Now copy the salvaged frame to the last mbuf and fake up - * the status word to make it look like a successful - * frame reception. - */ - m_copyback(cur_rx->pn_mbuf, 0, total_len, ptr); - cur_rx->pn_mbuf->m_len = c->pn_mbuf->m_pkthdr.len = MCLBYTES; - cur_rx->pn_ptr->pn_status |= PN_RXSTAT_FIRSTFRAG; - - return; -} -#endif - -/* - * A frame has been uploaded: pass the resulting mbuf chain up to - * the higher level protocols. - */ -static void pn_rxeof(sc) - struct pn_softc *sc; -{ - struct ether_header *eh; - struct mbuf *m; - struct ifnet *ifp; - struct pn_chain_onefrag *cur_rx; - int total_len = 0; - u_int32_t rxstat; - - ifp = &sc->arpcom.ac_if; - - while(!((rxstat = sc->pn_cdata.pn_rx_head->pn_ptr->pn_status) & - PN_RXSTAT_OWN)) { - struct mbuf *m0 = NULL; - - cur_rx = sc->pn_cdata.pn_rx_head; - sc->pn_cdata.pn_rx_head = cur_rx->pn_nextdesc; - -#ifdef PN_RX_BUG_WAR - /* - * XXX The PNIC has a nasty receiver bug that manifests - * under certain conditions (sometimes only in promiscuous - * mode, sometimes only on slow machines even when not in - * promiscuous mode). We have to keep an eye out for the - * failure condition and employ a workaround to recover - * any mangled frames. - */ - if (sc->pn_rx_war) { - if ((rxstat & PN_WHOLEFRAME) != PN_WHOLEFRAME) { - if (rxstat & PN_RXSTAT_FIRSTFRAG) - sc->pn_rx_bug_save = cur_rx; - if ((rxstat & PN_RXSTAT_LASTFRAG) == 0) - continue; - pn_rx_bug_war(sc, cur_rx); - rxstat = cur_rx->pn_ptr->pn_status; - } - } -#endif - - /* - * If an error occurs, update stats, clear the - * status word and leave the mbuf cluster in place: - * it should simply get re-used next time this descriptor - * comes up in the ring. - */ - if (rxstat & PN_RXSTAT_RXERR) { - ifp->if_ierrors++; - if (rxstat & PN_RXSTAT_COLLSEEN) - ifp->if_collisions++; - pn_newbuf(sc, cur_rx, cur_rx->pn_mbuf); - continue; - } - - /* No errors; receive the packet. */ - m = cur_rx->pn_mbuf; - total_len = PN_RXBYTES(cur_rx->pn_ptr->pn_status); - - /* Trim off the CRC. */ - total_len -= ETHER_CRC_LEN; - - m0 = m_devget(mtod(m, char *) - ETHER_ALIGN, - total_len + ETHER_ALIGN, 0, ifp, NULL); - pn_newbuf(sc, cur_rx, m); - if (m0 == NULL) { - ifp->if_ierrors++; - continue; - } - m_adj(m0, ETHER_ALIGN); - m = m0; - ifp->if_ipackets++; - eh = mtod(m, struct ether_header *); - -#ifdef BRIDGE - if (do_bridge) { - struct ifnet *bdg_ifp; - bdg_ifp = bridge_in(m); - if (bdg_ifp != BDG_LOCAL && bdg_ifp != BDG_DROP) - bdg_forward(&m, bdg_ifp); - if (((bdg_ifp != BDG_LOCAL) && (bdg_ifp != BDG_BCAST) && - (bdg_ifp != BDG_MCAST)) || bdg_ifp == BDG_DROP) { - m_freem(m); - continue; - } - } -#endif - - /* - * Handle BPF listeners. Let the BPF user see the packet, but - * don't pass it up to the ether_input() layer unless it's - * a broadcast packet, multicast packet, matches our ethernet - * address or the interface is in promiscuous mode. - */ - if (ifp->if_bpf) { - bpf_mtap(ifp, m); - if (ifp->if_flags & IFF_PROMISC && - (bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, - ETHER_ADDR_LEN) && - (eh->ether_dhost[0] & 1) == 0)) { - m_freem(m); - continue; - } - } - - /* Remove header from mbuf and pass it on. */ - m_adj(m, sizeof(struct ether_header)); - ether_input(ifp, eh, m); - } - - return; -} - -void pn_rxeoc(sc) - struct pn_softc *sc; -{ - - pn_rxeof(sc); - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_RX_ON); - CSR_WRITE_4(sc, PN_RXADDR, vtophys(sc->pn_cdata.pn_rx_head->pn_ptr)); - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_RX_ON); - CSR_WRITE_4(sc, PN_RXSTART, 0xFFFFFFFF); - - return; -} - -/* - * A frame was downloaded to the chip. It's safe for us to clean up - * the list buffers. - */ - -static void pn_txeof(sc) - struct pn_softc *sc; -{ - struct pn_chain *cur_tx; - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - - /* Clear the timeout timer. */ - ifp->if_timer = 0; - - if (sc->pn_cdata.pn_tx_head == NULL) - return; - - /* - * Go through our tx list and free mbufs for those - * frames that have been transmitted. - */ - while(sc->pn_cdata.pn_tx_head->pn_mbuf != NULL) { - u_int32_t txstat; - - cur_tx = sc->pn_cdata.pn_tx_head; - txstat = PN_TXSTATUS(cur_tx); - - if (txstat & PN_TXSTAT_OWN) - break; - - if (txstat & PN_TXSTAT_ERRSUM) { - ifp->if_oerrors++; - if (txstat & PN_TXSTAT_EXCESSCOLL) - ifp->if_collisions++; - if (txstat & PN_TXSTAT_LATECOLL) - ifp->if_collisions++; - } - - ifp->if_collisions += (txstat & PN_TXSTAT_COLLCNT) >> 3; - - - ifp->if_opackets++; - m_freem(cur_tx->pn_mbuf); - cur_tx->pn_mbuf = NULL; - - if (sc->pn_cdata.pn_tx_head == sc->pn_cdata.pn_tx_tail) { - sc->pn_cdata.pn_tx_head = NULL; - sc->pn_cdata.pn_tx_tail = NULL; - break; - } - - sc->pn_cdata.pn_tx_head = cur_tx->pn_nextdesc; - } - - return; -} - -/* - * TX 'end of channel' interrupt handler. - */ -static void pn_txeoc(sc) - struct pn_softc *sc; -{ - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - - ifp->if_timer = 0; - - if (sc->pn_cdata.pn_tx_head == NULL) { - ifp->if_flags &= ~IFF_OACTIVE; - sc->pn_cdata.pn_tx_tail = NULL; - if (sc->pn_want_auto) { - if (sc->pn_pinfo == NULL) - pn_autoneg(sc, PN_FLAG_SCHEDDELAY, 1); - else - pn_autoneg_mii(sc, PN_FLAG_SCHEDDELAY, 1); - } - - } - - return; -} - -static void pn_intr(arg) - void *arg; -{ - struct pn_softc *sc; - struct ifnet *ifp; - u_int32_t status; - - sc = arg; - ifp = &sc->arpcom.ac_if; - - /* Supress unwanted interrupts. */ - if (!(ifp->if_flags & IFF_UP)) { - pn_stop(sc); - return; - } - - /* Disable interrupts. */ - CSR_WRITE_4(sc, PN_IMR, 0x00000000); - - for (;;) { - status = CSR_READ_4(sc, PN_ISR); - if (status) - CSR_WRITE_4(sc, PN_ISR, status); - - if ((status & PN_INTRS) == 0) - break; - - if (status & PN_ISR_RX_OK) - pn_rxeof(sc); - - if ((status & PN_ISR_RX_WATCHDOG) || (status & PN_ISR_RX_IDLE) - || (status & PN_ISR_RX_NOBUF)) - pn_rxeoc(sc); - - if (status & PN_ISR_TX_OK) - pn_txeof(sc); - - if (status & PN_ISR_TX_NOBUF) - pn_txeoc(sc); - - if (status & PN_ISR_TX_IDLE) { - pn_txeof(sc); - if (sc->pn_cdata.pn_tx_head != NULL) { - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_TX_ON); - CSR_WRITE_4(sc, PN_TXSTART, 0xFFFFFFFF); - } - } - - if (status & PN_ISR_TX_UNDERRUN) { - ifp->if_oerrors++; - pn_txeof(sc); - if (sc->pn_cdata.pn_tx_head != NULL) { - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_TX_ON); - CSR_WRITE_4(sc, PN_TXSTART, 0xFFFFFFFF); - } - } - - if (status & PN_ISR_BUS_ERR) { - pn_reset(sc); - pn_init(sc); - } - } - - /* Re-enable interrupts. */ - CSR_WRITE_4(sc, PN_IMR, PN_INTRS); - - if (ifp->if_snd.ifq_head != NULL) { - pn_start(ifp); - } - - return; -} - -/* - * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data - * pointers to the fragment pointers. - */ -static int pn_encap(sc, c, m_head) - struct pn_softc *sc; - struct pn_chain *c; - struct mbuf *m_head; -{ - int frag = 0; - struct pn_desc *f = NULL; - int total_len; - struct mbuf *m; - - /* - * Start packing the mbufs in this chain into - * the fragment pointers. Stop when we run out - * of fragments or hit the end of the mbuf chain. - */ - m = m_head; - total_len = 0; - - for (m = m_head, frag = 0; m != NULL; m = m->m_next) { - if (m->m_len != 0) { - if (frag == PN_MAXFRAGS) - break; - total_len += m->m_len; - f = &c->pn_ptr->pn_frag[frag]; - f->pn_ctl = PN_TXCTL_TLINK | m->m_len; - if (frag == 0) { - f->pn_ctl |= PN_TXCTL_FIRSTFRAG; - f->pn_status = 0; - } else - f->pn_status = PN_TXSTAT_OWN; - f->pn_data = vtophys(mtod(m, vm_offset_t)); - f->pn_next = vtophys(&c->pn_ptr->pn_frag[frag + 1]); - frag++; - } - } - - /* - * Handle special case: we used up all 16 fragments, - * but we have more mbufs left in the chain. Copy the - * data into an mbuf cluster. Note that we don't - * bother clearing the values in the other fragment - * pointers/counters; it wouldn't gain us anything, - * and would waste cycles. - */ - if (m != NULL) { - struct mbuf *m_new = NULL; - - MGETHDR(m_new, M_DONTWAIT, MT_DATA); - if (m_new == NULL) { - printf("pn%d: no memory for tx list", sc->pn_unit); - return(1); - } - if (m_head->m_pkthdr.len > MHLEN) { - MCLGET(m_new, M_DONTWAIT); - if (!(m_new->m_flags & M_EXT)) { - m_freem(m_new); - printf("pn%d: no memory for tx list", - sc->pn_unit); - return(1); - } - } - m_copydata(m_head, 0, m_head->m_pkthdr.len, - mtod(m_new, caddr_t)); - m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len; - m_freem(m_head); - m_head = m_new; - f = &c->pn_ptr->pn_frag[0]; - f->pn_data = vtophys(mtod(m_new, caddr_t)); - f->pn_ctl = total_len = m_new->m_len; - f->pn_ctl |= PN_TXCTL_TLINK|PN_TXCTL_FIRSTFRAG; - frag = 1; - } - - - c->pn_mbuf = m_head; - c->pn_lastdesc = frag - 1; - PN_TXCTL(c) |= PN_TXCTL_LASTFRAG|PN_TXCTL_FINT; - PN_TXNEXT(c) = vtophys(&c->pn_nextdesc->pn_ptr->pn_frag[0]); - - return(0); -} - -/* - * Main transmit routine. To avoid having to do mbuf copies, we put pointers - * to the mbuf data regions directly in the transmit lists. We also save a - * copy of the pointers since the transmit list fragment pointers are - * physical addresses. - */ - -static void pn_start(ifp) - struct ifnet *ifp; -{ - struct pn_softc *sc; - struct mbuf *m_head = NULL; - struct pn_chain *cur_tx = NULL, *start_tx; - - sc = ifp->if_softc; - - if (sc->pn_autoneg) { - sc->pn_tx_pend = 1; - return; - } - - /* - * Check for an available queue slot. If there are none, - * punt. - */ - if (sc->pn_cdata.pn_tx_free->pn_mbuf != NULL) { - ifp->if_flags |= IFF_OACTIVE; - return; - } - - start_tx = sc->pn_cdata.pn_tx_free; - - while(sc->pn_cdata.pn_tx_free->pn_mbuf == NULL) { - IF_DEQUEUE(&ifp->if_snd, m_head); - if (m_head == NULL) - break; - - /* Pick a descriptor off the free list. */ - cur_tx = sc->pn_cdata.pn_tx_free; - sc->pn_cdata.pn_tx_free = cur_tx->pn_nextdesc; - - /* Pack the data into the descriptor. */ - pn_encap(sc, cur_tx, m_head); - - if (cur_tx != start_tx) - PN_TXOWN(cur_tx) = PN_TXSTAT_OWN; - - /* - * If there's a BPF listener, bounce a copy of this frame - * to him. - */ - if (ifp->if_bpf) - bpf_mtap(ifp, cur_tx->pn_mbuf); - - PN_TXOWN(cur_tx) = PN_TXSTAT_OWN; - CSR_WRITE_4(sc, PN_TXSTART, 0xFFFFFFFF); - } - - /* - * If there are no packets queued, bail. - */ - if (cur_tx == NULL) - return; - - sc->pn_cdata.pn_tx_tail = cur_tx; - - if (sc->pn_cdata.pn_tx_head == NULL) - sc->pn_cdata.pn_tx_head = start_tx; - - /* - * Set a timeout in case the chip goes out to lunch. - */ - ifp->if_timer = 5; - - return; -} - -static void pn_init(xsc) - void *xsc; -{ - struct pn_softc *sc = xsc; - struct ifnet *ifp = &sc->arpcom.ac_if; - u_int16_t phy_bmcr = 0; - int s; - - if (sc->pn_autoneg) - return; - - s = splimp(); - - if (sc->pn_pinfo != NULL) - phy_bmcr = pn_phy_readreg(sc, PHY_BMCR); - - /* - * Cancel pending I/O and free all RX/TX buffers. - */ - pn_stop(sc); - pn_reset(sc); - - /* - * Set cache alignment and burst length. - */ - CSR_WRITE_4(sc, PN_BUSCTL, PN_BUSCTL_MUSTBEONE|PN_BUSCTL_ARBITRATION); - PN_SETBIT(sc, PN_BUSCTL, PN_BURSTLEN_16LONG); - switch(sc->pn_cachesize) { - case 32: - PN_SETBIT(sc, PN_BUSCTL, PN_CACHEALIGN_32LONG); - break; - case 16: - PN_SETBIT(sc, PN_BUSCTL, PN_CACHEALIGN_16LONG); - break; - case 8: - PN_SETBIT(sc, PN_BUSCTL, PN_CACHEALIGN_8LONG); - break; - case 0: - default: - PN_SETBIT(sc, PN_BUSCTL, PN_CACHEALIGN_NONE); - break; - } - - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_TX_IMMEDIATE); - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_NO_RXCRC); - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_HEARTBEAT); - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_STORENFWD); - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_TX_BACKOFF); - - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_TX_THRESH); - PN_SETBIT(sc, PN_NETCFG, PN_TXTHRESH_72BYTES); - - if (sc->pn_pinfo == NULL) { - PN_CLRBIT(sc, PN_NETCFG, PN_NETCFG_MIIENB); - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_TX_BACKOFF); - } else { - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_MIIENB); - PN_SETBIT(sc, PN_ENDEC, PN_ENDEC_JABBERDIS); - } - - pn_setcfg(sc, sc->ifmedia.ifm_media); - - /* Init circular RX list. */ - if (pn_list_rx_init(sc) == ENOBUFS) { - printf("pn%d: initialization failed: no " - "memory for rx buffers\n", sc->pn_unit); - pn_stop(sc); - (void)splx(s); - return; - } - - /* - * Init tx descriptors. - */ - pn_list_tx_init(sc); - - /* - * Load the address of the RX list. - */ - CSR_WRITE_4(sc, PN_RXADDR, vtophys(sc->pn_cdata.pn_rx_head->pn_ptr)); - - /* - * Load the RX/multicast filter. - */ - pn_setfilt(sc); - - /* - * Enable interrupts. - */ - CSR_WRITE_4(sc, PN_IMR, PN_INTRS); - CSR_WRITE_4(sc, PN_ISR, 0xFFFFFFFF); - - /* Enable receiver and transmitter. */ - PN_SETBIT(sc, PN_NETCFG, PN_NETCFG_TX_ON|PN_NETCFG_RX_ON); - CSR_WRITE_4(sc, PN_RXSTART, 0xFFFFFFFF); - - /* Restore state of BMCR */ - if (sc->pn_pinfo != NULL) - pn_phy_writereg(sc, PHY_BMCR, phy_bmcr); - - ifp->if_flags |= IFF_RUNNING; - ifp->if_flags &= ~IFF_OACTIVE; - - (void)splx(s); - - return; -} - -/* - * Set media options. - */ -static int pn_ifmedia_upd(ifp) - struct ifnet *ifp; -{ - struct pn_softc *sc; - struct ifmedia *ifm; - - sc = ifp->if_softc; - ifm = &sc->ifmedia; - - if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) - return(EINVAL); - - if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) { - if (sc->pn_pinfo == NULL) - pn_autoneg(sc, PN_FLAG_SCHEDDELAY, 1); - else - pn_autoneg_mii(sc, PN_FLAG_SCHEDDELAY, 1); - } else { - if (sc->pn_pinfo == NULL) - pn_setmode(sc, ifm->ifm_media); - else - pn_setmode_mii(sc, ifm->ifm_media); - } - - return(0); -} - -/* - * Report current media status. - */ -static void pn_ifmedia_sts(ifp, ifmr) - struct ifnet *ifp; - struct ifmediareq *ifmr; -{ - struct pn_softc *sc; - u_int16_t advert = 0, ability = 0; - - sc = ifp->if_softc; - - ifmr->ifm_active = IFM_ETHER; - - if (sc->pn_pinfo == NULL) { - if (CSR_READ_4(sc, PN_NETCFG) & PN_NETCFG_SPEEDSEL) - ifmr->ifm_active = IFM_ETHER|IFM_10_T; - else - ifmr->ifm_active = IFM_ETHER|IFM_100_TX; - if (CSR_READ_4(sc, PN_NETCFG) & PN_NETCFG_FULLDUPLEX) - ifmr->ifm_active |= IFM_FDX; - else - ifmr->ifm_active |= IFM_HDX; - return; - } - - if (!(pn_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_AUTONEGENBL)) { - if (pn_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_SPEEDSEL) - ifmr->ifm_active = IFM_ETHER|IFM_100_TX; - else - ifmr->ifm_active = IFM_ETHER|IFM_10_T; - if (pn_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_DUPLEX) - ifmr->ifm_active |= IFM_FDX; - else - ifmr->ifm_active |= IFM_HDX; - return; - } - - ability = pn_phy_readreg(sc, PHY_LPAR); - advert = pn_phy_readreg(sc, PHY_ANAR); - if (advert & PHY_ANAR_100BT4 && - ability & PHY_ANAR_100BT4) { - ifmr->ifm_active = IFM_ETHER|IFM_100_T4; - } else if (advert & PHY_ANAR_100BTXFULL && - ability & PHY_ANAR_100BTXFULL) { - ifmr->ifm_active = IFM_ETHER|IFM_100_TX|IFM_FDX; - } else if (advert & PHY_ANAR_100BTXHALF && - ability & PHY_ANAR_100BTXHALF) { - ifmr->ifm_active = IFM_ETHER|IFM_100_TX|IFM_HDX; - } else if (advert & PHY_ANAR_10BTFULL && - ability & PHY_ANAR_10BTFULL) { - ifmr->ifm_active = IFM_ETHER|IFM_10_T|IFM_FDX; - } else if (advert & PHY_ANAR_10BTHALF && - ability & PHY_ANAR_10BTHALF) { - ifmr->ifm_active = IFM_ETHER|IFM_10_T|IFM_HDX; - } - - return; -} - -static int pn_ioctl(ifp, command, data) - struct ifnet *ifp; - u_long command; - caddr_t data; -{ - struct pn_softc *sc = ifp->if_softc; - struct ifreq *ifr = (struct ifreq *) data; - int s, error = 0; - - s = splimp(); - - switch(command) { - case SIOCSIFADDR: - case SIOCGIFADDR: - case SIOCSIFMTU: - error = ether_ioctl(ifp, command, data); - break; - case SIOCSIFFLAGS: - if (ifp->if_flags & IFF_UP) { - pn_init(sc); - } else { - if (ifp->if_flags & IFF_RUNNING) - pn_stop(sc); - } - error = 0; - break; - case SIOCADDMULTI: - case SIOCDELMULTI: - pn_init(sc); - error = 0; - break; - case SIOCGIFMEDIA: - case SIOCSIFMEDIA: - error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command); - break; - default: - error = EINVAL; - break; - } - - (void)splx(s); - - return(error); -} - -static void pn_watchdog(ifp) - struct ifnet *ifp; -{ - struct pn_softc *sc; - - sc = ifp->if_softc; - - if (sc->pn_autoneg) { - if (sc->pn_pinfo == NULL) - pn_autoneg(sc, PN_FLAG_DELAYTIMEO, 1); - else - pn_autoneg_mii(sc, PN_FLAG_DELAYTIMEO, 1); - if (!(ifp->if_flags & IFF_UP)) - pn_stop(sc); - return; - } - - ifp->if_oerrors++; - printf("pn%d: watchdog timeout\n", sc->pn_unit); - - if (!(pn_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT)) - printf("pn%d: no carrier - transceiver cable problem?\n", - sc->pn_unit); - pn_stop(sc); - pn_reset(sc); - pn_init(sc); - - if (ifp->if_snd.ifq_head != NULL) - pn_start(ifp); - - return; -} - -/* - * Stop the adapter and free any mbufs allocated to the - * RX and TX lists. - */ -static void pn_stop(sc) - struct pn_softc *sc; -{ - register int i; - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - ifp->if_timer = 0; - - PN_CLRBIT(sc, PN_NETCFG, (PN_NETCFG_RX_ON|PN_NETCFG_TX_ON)); - CSR_WRITE_4(sc, PN_IMR, 0x00000000); - CSR_WRITE_4(sc, PN_TXADDR, 0x00000000); - CSR_WRITE_4(sc, PN_RXADDR, 0x00000000); - - /* - * Free data in the RX lists. - */ - for (i = 0; i < PN_RX_LIST_CNT; i++) { - if (sc->pn_cdata.pn_rx_chain[i].pn_mbuf != NULL) { - m_freem(sc->pn_cdata.pn_rx_chain[i].pn_mbuf); - sc->pn_cdata.pn_rx_chain[i].pn_mbuf = NULL; - } - } - bzero((char *)&sc->pn_ldata->pn_rx_list, - sizeof(sc->pn_ldata->pn_rx_list)); - - /* - * Free the TX list buffers. - */ - for (i = 0; i < PN_TX_LIST_CNT; i++) { - if (sc->pn_cdata.pn_tx_chain[i].pn_mbuf != NULL) { - m_freem(sc->pn_cdata.pn_tx_chain[i].pn_mbuf); - sc->pn_cdata.pn_tx_chain[i].pn_mbuf = NULL; - } - } - - bzero((char *)&sc->pn_ldata->pn_tx_list, - sizeof(sc->pn_ldata->pn_tx_list)); - - ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); - - return; -} - -/* - * Stop all chip I/O so that the kernel's probe routines don't - * get confused by errant DMAs when rebooting. - */ -static void pn_shutdown(dev) - device_t dev; -{ - struct pn_softc *sc; - - sc = device_get_softc(dev); - - pn_stop(sc); - - return; -} |
