diff options
Diffstat (limited to 'sys/pci/if_vr.c')
| -rw-r--r-- | sys/pci/if_vr.c | 1957 |
1 files changed, 0 insertions, 1957 deletions
diff --git a/sys/pci/if_vr.c b/sys/pci/if_vr.c deleted file mode 100644 index efed968177dc..000000000000 --- a/sys/pci/if_vr.c +++ /dev/null @@ -1,1957 +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. - * - * $Id: if_vr.c,v 1.16 1999/01/10 18:06:10 wpaul Exp $ - */ - -/* - * VIA Rhine fast ethernet PCI NIC driver - * - * Supports various network adapters based on the VIA Rhine - * and Rhine II PCI controllers, including the D-Link DFE530TX. - * Datasheets are available at http://www.via.com.tw. - * - * Written by Bill Paul <wpaul@ctr.columbia.edu> - * Electrical Engineering Department - * Columbia University, New York City - */ - -/* - * The VIA Rhine controllers are similar in some respects to the - * the DEC tulip chips, except less complicated. The controller - * uses an MII bus and an external physical layer interface. The - * receiver has a one entry perfect filter and a 64-bit hash table - * multicast filter. Transmit and receive descriptors are similar - * to the tulip. - * - * The Rhine has a serious flaw in its transmit DMA mechanism: - * transmit buffers must be longword aligned. Unfortunately, - * FreeBSD doesn't guarantee that mbufs will be filled in starting - * at longword boundaries, so we have to do a buffer copy before - * transmission. - */ - -#include "bpfilter.h" - -#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> - -#if NBPFILTER > 0 -#include <net/bpf.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 <pci/pcireg.h> -#include <pci/pcivar.h> - -#define VR_USEIOSPACE - -/* #define VR_BACKGROUND_AUTONEG */ - -#include <pci/if_vrreg.h> - -#ifndef lint -static const char rcsid[] = - "$Id: if_vr.c,v 1.16 1999/01/10 18:06:10 wpaul Exp $"; -#endif - -/* - * Various supported device vendors/types and their names. - */ -static struct vr_type vr_devs[] = { - { VIA_VENDORID, VIA_DEVICEID_RHINE, - "VIA VT3043 Rhine I 10/100BaseTX" }, - { VIA_VENDORID, VIA_DEVICEID_RHINE_II, - "VIA VT86C100A Rhine II 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 vr_type vr_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 unsigned long vr_count = 0; -static const char *vr_probe __P((pcici_t, pcidi_t)); -static void vr_attach __P((pcici_t, int)); - -static int vr_newbuf __P((struct vr_softc *, - struct vr_chain_onefrag *)); -static int vr_encap __P((struct vr_softc *, struct vr_chain *, - struct mbuf * )); - -static void vr_rxeof __P((struct vr_softc *)); -static void vr_rxeoc __P((struct vr_softc *)); -static void vr_txeof __P((struct vr_softc *)); -static void vr_txeoc __P((struct vr_softc *)); -static void vr_intr __P((void *)); -static void vr_start __P((struct ifnet *)); -static int vr_ioctl __P((struct ifnet *, u_long, caddr_t)); -static void vr_init __P((void *)); -static void vr_stop __P((struct vr_softc *)); -static void vr_watchdog __P((struct ifnet *)); -static void vr_shutdown __P((int, void *)); -static int vr_ifmedia_upd __P((struct ifnet *)); -static void vr_ifmedia_sts __P((struct ifnet *, struct ifmediareq *)); - -static void vr_mii_sync __P((struct vr_softc *)); -static void vr_mii_send __P((struct vr_softc *, u_int32_t, int)); -static int vr_mii_readreg __P((struct vr_softc *, struct vr_mii_frame *)); -static int vr_mii_writereg __P((struct vr_softc *, struct vr_mii_frame *)); -static u_int16_t vr_phy_readreg __P((struct vr_softc *, int)); -static void vr_phy_writereg __P((struct vr_softc *, u_int16_t, u_int16_t)); - -static void vr_autoneg_xmit __P((struct vr_softc *)); -static void vr_autoneg_mii __P((struct vr_softc *, int, int)); -static void vr_setmode_mii __P((struct vr_softc *, int)); -static void vr_getmode_mii __P((struct vr_softc *)); -static void vr_setcfg __P((struct vr_softc *, u_int16_t)); -static u_int8_t vr_calchash __P((u_int8_t *)); -static void vr_setmulti __P((struct vr_softc *)); -static void vr_reset __P((struct vr_softc *)); -static int vr_list_rx_init __P((struct vr_softc *)); -static int vr_list_tx_init __P((struct vr_softc *)); - -#define VR_SETBIT(sc, reg, x) \ - CSR_WRITE_1(sc, reg, \ - CSR_READ_1(sc, reg) | x) - -#define VR_CLRBIT(sc, reg, x) \ - CSR_WRITE_1(sc, reg, \ - CSR_READ_1(sc, reg) & ~x) - -#define VR_SETBIT16(sc, reg, x) \ - CSR_WRITE_2(sc, reg, \ - CSR_READ_2(sc, reg) | x) - -#define VR_CLRBIT16(sc, reg, x) \ - CSR_WRITE_2(sc, reg, \ - CSR_READ_2(sc, reg) & ~x) - -#define VR_SETBIT32(sc, reg, x) \ - CSR_WRITE_4(sc, reg, \ - CSR_READ_4(sc, reg) | x) - -#define VR_CLRBIT32(sc, reg, x) \ - CSR_WRITE_4(sc, reg, \ - CSR_READ_4(sc, reg) & ~x) - -#define SIO_SET(x) \ - CSR_WRITE_1(sc, VR_MIICMD, \ - CSR_READ_1(sc, VR_MIICMD) | x) - -#define SIO_CLR(x) \ - CSR_WRITE_1(sc, VR_MIICMD, \ - CSR_READ_1(sc, VR_MIICMD) & ~x) - -/* - * Sync the PHYs by setting data bit and strobing the clock 32 times. - */ -static void vr_mii_sync(sc) - struct vr_softc *sc; -{ - register int i; - - SIO_SET(VR_MIICMD_DIR|VR_MIICMD_DATAIN); - - for (i = 0; i < 32; i++) { - SIO_SET(VR_MIICMD_CLK); - DELAY(1); - SIO_CLR(VR_MIICMD_CLK); - DELAY(1); - } - - return; -} - -/* - * Clock a series of bits through the MII. - */ -static void vr_mii_send(sc, bits, cnt) - struct vr_softc *sc; - u_int32_t bits; - int cnt; -{ - int i; - - SIO_CLR(VR_MIICMD_CLK); - - for (i = (0x1 << (cnt - 1)); i; i >>= 1) { - if (bits & i) { - SIO_SET(VR_MIICMD_DATAIN); - } else { - SIO_CLR(VR_MIICMD_DATAIN); - } - DELAY(1); - SIO_CLR(VR_MIICMD_CLK); - DELAY(1); - SIO_SET(VR_MIICMD_CLK); - } -} - -/* - * Read an PHY register through the MII. - */ -static int vr_mii_readreg(sc, frame) - struct vr_softc *sc; - struct vr_mii_frame *frame; - -{ - int i, ack, s; - - s = splimp(); - - /* - * Set up frame for RX. - */ - frame->mii_stdelim = VR_MII_STARTDELIM; - frame->mii_opcode = VR_MII_READOP; - frame->mii_turnaround = 0; - frame->mii_data = 0; - - CSR_WRITE_1(sc, VR_MIICMD, 0); - VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_DIRECTPGM); - - /* - * Turn on data xmit. - */ - SIO_SET(VR_MIICMD_DIR); - - vr_mii_sync(sc); - - /* - * Send command/address info. - */ - vr_mii_send(sc, frame->mii_stdelim, 2); - vr_mii_send(sc, frame->mii_opcode, 2); - vr_mii_send(sc, frame->mii_phyaddr, 5); - vr_mii_send(sc, frame->mii_regaddr, 5); - - /* Idle bit */ - SIO_CLR((VR_MIICMD_CLK|VR_MIICMD_DATAIN)); - DELAY(1); - SIO_SET(VR_MIICMD_CLK); - DELAY(1); - - /* Turn off xmit. */ - SIO_CLR(VR_MIICMD_DIR); - - /* Check for ack */ - SIO_CLR(VR_MIICMD_CLK); - DELAY(1); - SIO_SET(VR_MIICMD_CLK); - DELAY(1); - ack = CSR_READ_4(sc, VR_MIICMD) & VR_MIICMD_DATAOUT; - - /* - * Now try reading data bits. If the ack failed, we still - * need to clock through 16 cycles to keep the PHY(s) in sync. - */ - if (ack) { - for(i = 0; i < 16; i++) { - SIO_CLR(VR_MIICMD_CLK); - DELAY(1); - SIO_SET(VR_MIICMD_CLK); - DELAY(1); - } - goto fail; - } - - for (i = 0x8000; i; i >>= 1) { - SIO_CLR(VR_MIICMD_CLK); - DELAY(1); - if (!ack) { - if (CSR_READ_4(sc, VR_MIICMD) & VR_MIICMD_DATAOUT) - frame->mii_data |= i; - DELAY(1); - } - SIO_SET(VR_MIICMD_CLK); - DELAY(1); - } - -fail: - - SIO_CLR(VR_MIICMD_CLK); - DELAY(1); - SIO_SET(VR_MIICMD_CLK); - DELAY(1); - - splx(s); - - if (ack) - return(1); - return(0); -} - -/* - * Write to a PHY register through the MII. - */ -static int vr_mii_writereg(sc, frame) - struct vr_softc *sc; - struct vr_mii_frame *frame; - -{ - int s; - - s = splimp(); - - CSR_WRITE_1(sc, VR_MIICMD, 0); - VR_SETBIT(sc, VR_MIICMD, VR_MIICMD_DIRECTPGM); - - /* - * Set up frame for TX. - */ - - frame->mii_stdelim = VR_MII_STARTDELIM; - frame->mii_opcode = VR_MII_WRITEOP; - frame->mii_turnaround = VR_MII_TURNAROUND; - - /* - * Turn on data output. - */ - SIO_SET(VR_MIICMD_DIR); - - vr_mii_sync(sc); - - vr_mii_send(sc, frame->mii_stdelim, 2); - vr_mii_send(sc, frame->mii_opcode, 2); - vr_mii_send(sc, frame->mii_phyaddr, 5); - vr_mii_send(sc, frame->mii_regaddr, 5); - vr_mii_send(sc, frame->mii_turnaround, 2); - vr_mii_send(sc, frame->mii_data, 16); - - /* Idle bit. */ - SIO_SET(VR_MIICMD_CLK); - DELAY(1); - SIO_CLR(VR_MIICMD_CLK); - DELAY(1); - - /* - * Turn off xmit. - */ - SIO_CLR(VR_MIICMD_DIR); - - splx(s); - - return(0); -} - -static u_int16_t vr_phy_readreg(sc, reg) - struct vr_softc *sc; - int reg; -{ - struct vr_mii_frame frame; - - bzero((char *)&frame, sizeof(frame)); - - frame.mii_phyaddr = sc->vr_phy_addr; - frame.mii_regaddr = reg; - vr_mii_readreg(sc, &frame); - - return(frame.mii_data); -} - -static void vr_phy_writereg(sc, reg, data) - struct vr_softc *sc; - u_int16_t reg; - u_int16_t data; -{ - struct vr_mii_frame frame; - - bzero((char *)&frame, sizeof(frame)); - - frame.mii_phyaddr = sc->vr_phy_addr; - frame.mii_regaddr = reg; - frame.mii_data = data; - - vr_mii_writereg(sc, &frame); - - return; -} - -/* - * Calculate CRC of a multicast group address, return the lower 6 bits. - */ -static u_int8_t vr_calchash(addr) - u_int8_t *addr; -{ - u_int32_t crc, carry; - int i, j; - u_int8_t c; - - /* Compute CRC for the address value. */ - crc = 0xFFFFFFFF; /* initial value */ - - for (i = 0; i < 6; i++) { - c = *(addr + i); - for (j = 0; j < 8; j++) { - carry = ((crc & 0x80000000) ? 1 : 0) ^ (c & 0x01); - crc <<= 1; - c >>= 1; - if (carry) - crc = (crc ^ 0x04c11db6) | carry; - } - } - - /* return the filter bit position */ - return((crc >> 26) & 0x0000003F); -} - -/* - * Program the 64-bit multicast hash filter. - */ -static void vr_setmulti(sc) - struct vr_softc *sc; -{ - struct ifnet *ifp; - int h = 0; - u_int32_t hashes[2] = { 0, 0 }; - struct ifmultiaddr *ifma; - u_int8_t rxfilt; - int mcnt = 0; - - ifp = &sc->arpcom.ac_if; - - rxfilt = CSR_READ_1(sc, VR_RXCFG); - - if (ifp->if_flags & IFF_ALLMULTI || ifp->if_flags & IFF_PROMISC) { - rxfilt |= VR_RXCFG_RX_MULTI; - CSR_WRITE_1(sc, VR_RXCFG, rxfilt); - CSR_WRITE_4(sc, VR_MAR0, 0xFFFFFFFF); - CSR_WRITE_4(sc, VR_MAR1, 0xFFFFFFFF); - return; - } - - /* first, zot all the existing hash bits */ - CSR_WRITE_4(sc, VR_MAR0, 0); - CSR_WRITE_4(sc, VR_MAR1, 0); - - /* now program new ones */ - 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 = vr_calchash(LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); - if (h < 32) - hashes[0] |= (1 << h); - else - hashes[1] |= (1 << (h - 32)); - mcnt++; - } - - if (mcnt) - rxfilt |= VR_RXCFG_RX_MULTI; - else - rxfilt &= ~VR_RXCFG_RX_MULTI; - - CSR_WRITE_4(sc, VR_MAR0, hashes[0]); - CSR_WRITE_4(sc, VR_MAR1, hashes[1]); - CSR_WRITE_1(sc, VR_RXCFG, rxfilt); - - return; -} - -/* - * Initiate an autonegotiation session. - */ -static void vr_autoneg_xmit(sc) - struct vr_softc *sc; -{ - u_int16_t phy_sts; - - vr_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET); - DELAY(500); - while(vr_phy_readreg(sc, PHY_BMCR) - & PHY_BMCR_RESET); - - phy_sts = vr_phy_readreg(sc, PHY_BMCR); - phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; - vr_phy_writereg(sc, PHY_BMCR, phy_sts); - - return; -} - -/* - * Invoke autonegotiation on a PHY. - */ -static void vr_autoneg_mii(sc, flag, verbose) - struct vr_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 = vr_phy_readreg(sc, PHY_BMSR); - if (!(phy_sts & PHY_BMSR_CANAUTONEG)) { - if (verbose) - printf("vr%d: autonegotiation not supported\n", - sc->vr_unit); - ifm->ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX; - return; - } -#endif - - switch (flag) { - case VR_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. - */ - vr_autoneg_xmit(sc); - DELAY(5000000); - break; - case VR_FLAG_SCHEDDELAY: - /* - * Wait for the transmitter to go idle before starting - * an autoneg session, otherwise vr_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->vr_cdata.vr_tx_head != NULL) { - sc->vr_want_auto = 1; - return; - } - vr_autoneg_xmit(sc); - ifp->if_timer = 5; - sc->vr_autoneg = 1; - sc->vr_want_auto = 0; - return; - break; - case VR_FLAG_DELAYTIMEO: - ifp->if_timer = 0; - sc->vr_autoneg = 0; - break; - default: - printf("vr%d: invalid autoneg flag: %d\n", sc->vr_unit, flag); - return; - } - - if (vr_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_AUTONEGCOMP) { - if (verbose) - printf("vr%d: autoneg complete, ", sc->vr_unit); - phy_sts = vr_phy_readreg(sc, PHY_BMSR); - } else { - if (verbose) - printf("vr%d: autoneg not complete, ", sc->vr_unit); - } - - media = vr_phy_readreg(sc, PHY_BMCR); - - /* Link is good. Report modes and set duplex mode. */ - if (vr_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT) { - if (verbose) - printf("link status good "); - advert = vr_phy_readreg(sc, PHY_ANAR); - ability = vr_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 { - 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. */ - vr_setcfg(sc, media); - vr_phy_writereg(sc, PHY_BMCR, media); - } else { - if (verbose) - printf("no carrier\n"); - } - - vr_init(sc); - - if (sc->vr_tx_pend) { - sc->vr_autoneg = 0; - sc->vr_tx_pend = 0; - vr_start(ifp); - } - - return; -} - -static void vr_getmode_mii(sc) - struct vr_softc *sc; -{ - u_int16_t bmsr; - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - - bmsr = vr_phy_readreg(sc, PHY_BMSR); - if (bootverbose) - printf("vr%d: PHY status word: %x\n", sc->vr_unit, bmsr); - - /* fallback */ - sc->ifmedia.ifm_media = IFM_ETHER|IFM_10_T|IFM_HDX; - - if (bmsr & PHY_BMSR_10BTHALF) { - if (bootverbose) - printf("vr%d: 10Mbps half-duplex mode supported\n", - sc->vr_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("vr%d: 10Mbps full-duplex mode supported\n", - sc->vr_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("vr%d: 100Mbps half-duplex mode supported\n", - sc->vr_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("vr%d: 100Mbps full-duplex mode supported\n", - sc->vr_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("vr%d: 100baseT4 mode supported\n", sc->vr_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("vr%d: forcing on autoneg support for BT4\n", - sc->vr_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("vr%d: autoneg supported\n", sc->vr_unit); - ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL); - sc->ifmedia.ifm_media = IFM_ETHER|IFM_AUTO; - } - - return; -} - -/* - * Set speed and duplex mode. - */ -static void vr_setmode_mii(sc, media) - struct vr_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->vr_autoneg) { - printf("vr%d: canceling autoneg session\n", sc->vr_unit); - ifp->if_timer = sc->vr_autoneg = sc->vr_want_auto = 0; - bmcr = vr_phy_readreg(sc, PHY_BMCR); - bmcr &= ~PHY_BMCR_AUTONEGENBL; - vr_phy_writereg(sc, PHY_BMCR, bmcr); - } - - printf("vr%d: selecting MII, ", sc->vr_unit); - - bmcr = vr_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; - } - - vr_setcfg(sc, bmcr); - vr_phy_writereg(sc, PHY_BMCR, bmcr); - - 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 vr_setcfg(sc, bmcr) - struct vr_softc *sc; - u_int16_t bmcr; -{ - int restart = 0; - - if (CSR_READ_2(sc, VR_COMMAND) & (VR_CMD_TX_ON|VR_CMD_RX_ON)) { - restart = 1; - VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_TX_ON|VR_CMD_RX_ON)); - } - - if (bmcr & PHY_BMCR_DUPLEX) - VR_SETBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX); - else - VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_FULLDUPLEX); - - if (restart) - VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_RX_ON); - - return; -} - -static void vr_reset(sc) - struct vr_softc *sc; -{ - register int i; - - VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RESET); - - for (i = 0; i < VR_TIMEOUT; i++) { - DELAY(10); - if (!(CSR_READ_2(sc, VR_COMMAND) & VR_CMD_RESET)) - break; - } - if (i == VR_TIMEOUT) - printf("vr%d: reset never completed!\n", sc->vr_unit); - - /* Wait a little while for the chip to get its brains in order. */ - DELAY(1000); - - return; -} - -/* - * Probe for a VIA Rhine chip. Check the PCI vendor and device - * IDs against our list and return a device name if we find a match. - */ -static const char * -vr_probe(config_id, device_id) - pcici_t config_id; - pcidi_t device_id; -{ - struct vr_type *t; - - t = vr_devs; - - while(t->vr_name != NULL) { - if ((device_id & 0xFFFF) == t->vr_vid && - ((device_id >> 16) & 0xFFFF) == t->vr_did) { - return(t->vr_name); - } - t++; - } - - return(NULL); -} - -/* - * Attach the interface. Allocate softc structures, do ifmedia - * setup and ethernet/BPF attach. - */ -static void -vr_attach(config_id, unit) - pcici_t config_id; - int unit; -{ - int s, i; -#ifndef VR_USEIOSPACE - vm_offset_t pbase, vbase; -#endif - u_char eaddr[ETHER_ADDR_LEN]; - u_int32_t command; - struct vr_softc *sc; - struct ifnet *ifp; - int media = IFM_ETHER|IFM_100_TX|IFM_FDX; - unsigned int round; - caddr_t roundptr; - struct vr_type *p; - u_int16_t phy_vid, phy_did, phy_sts; - - s = splimp(); - - sc = malloc(sizeof(struct vr_softc), M_DEVBUF, M_NOWAIT); - if (sc == NULL) { - printf("vr%d: no memory for softc struct!\n", unit); - return; - } - bzero(sc, sizeof(struct vr_softc)); - - /* - * Handle power management nonsense. - */ - - command = pci_conf_read(config_id, VR_PCI_CAPID) & 0x000000FF; - if (command == 0x01) { - - command = pci_conf_read(config_id, VR_PCI_PWRMGMTCTRL); - if (command & VR_PSTATE_MASK) { - u_int32_t iobase, membase, irq; - - /* Save important PCI config data. */ - iobase = pci_conf_read(config_id, VR_PCI_LOIO); - membase = pci_conf_read(config_id, VR_PCI_LOMEM); - irq = pci_conf_read(config_id, VR_PCI_INTLINE); - - /* Reset the power state. */ - printf("vr%d: chip is in D%d power mode " - "-- setting to D0\n", unit, command & VR_PSTATE_MASK); - command &= 0xFFFFFFFC; - pci_conf_write(config_id, VR_PCI_PWRMGMTCTRL, command); - - /* Restore PCI config data. */ - pci_conf_write(config_id, VR_PCI_LOIO, iobase); - pci_conf_write(config_id, VR_PCI_LOMEM, membase); - pci_conf_write(config_id, VR_PCI_INTLINE, irq); - } - } - - /* - * Map control/status registers. - */ - command = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG); - command |= (PCIM_CMD_PORTEN|PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN); - pci_conf_write(config_id, PCI_COMMAND_STATUS_REG, command); - command = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG); - -#ifdef VR_USEIOSPACE - if (!(command & PCIM_CMD_PORTEN)) { - printf("vr%d: failed to enable I/O ports!\n", unit); - free(sc, M_DEVBUF); - goto fail; - } - - if (!pci_map_port(config_id, VR_PCI_LOIO, - (u_int16_t *)(&sc->vr_bhandle))) { - printf ("vr%d: couldn't map ports\n", unit); - goto fail; - } - sc->vr_btag = I386_BUS_SPACE_IO; -#else - if (!(command & PCIM_CMD_MEMEN)) { - printf("vr%d: failed to enable memory mapping!\n", unit); - goto fail; - } - - if (!pci_map_mem(config_id, VR_PCI_LOMEM, &vbase, &pbase)) { - printf ("vr%d: couldn't map memory\n", unit); - goto fail; - } - - sc->vr_bhandle = vbase; - sc->vr_btag = I386_BUS_SPACE_MEM; -#endif - - /* Allocate interrupt */ - if (!pci_map_int(config_id, vr_intr, sc, &net_imask)) { - printf("vr%d: couldn't map interrupt\n", unit); - goto fail; - } - - /* Reset the adapter. */ - vr_reset(sc); - - /* - * Get station address. The way the Rhine chips work, - * you're not allowed to directly access the EEPROM once - * they've been programmed a special way. Consequently, - * we need to read the node address from the PAR0 and PAR1 - * registers. - */ - VR_SETBIT(sc, VR_EECSR, VR_EECSR_LOAD); - DELAY(200); - for (i = 0; i < ETHER_ADDR_LEN; i++) - eaddr[i] = CSR_READ_1(sc, VR_PAR0 + i); - - /* - * A Rhine chip was detected. Inform the world. - */ - printf("vr%d: Ethernet address: %6D\n", unit, eaddr, ":"); - - sc->vr_unit = unit; - bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); - - sc->vr_ldata_ptr = malloc(sizeof(struct vr_list_data) + 8, - M_DEVBUF, M_NOWAIT); - if (sc->vr_ldata_ptr == NULL) { - free(sc, M_DEVBUF); - printf("vr%d: no memory for list buffers!\n", unit); - return; - } - - sc->vr_ldata = (struct vr_list_data *)sc->vr_ldata_ptr; - round = (unsigned int)sc->vr_ldata_ptr & 0xF; - roundptr = sc->vr_ldata_ptr; - for (i = 0; i < 8; i++) { - if (round % 8) { - round++; - roundptr++; - } else - break; - } - sc->vr_ldata = (struct vr_list_data *)roundptr; - bzero(sc->vr_ldata, sizeof(struct vr_list_data)); - - ifp = &sc->arpcom.ac_if; - ifp->if_softc = sc; - ifp->if_unit = unit; - ifp->if_name = "vr"; - ifp->if_mtu = ETHERMTU; - ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; - ifp->if_ioctl = vr_ioctl; - ifp->if_output = ether_output; - ifp->if_start = vr_start; - ifp->if_watchdog = vr_watchdog; - ifp->if_init = vr_init; - ifp->if_baudrate = 10000000; - - if (bootverbose) - printf("vr%d: probing for a PHY\n", sc->vr_unit); - for (i = VR_PHYADDR_MIN; i < VR_PHYADDR_MAX + 1; i++) { - if (bootverbose) - printf("vr%d: checking address: %d\n", - sc->vr_unit, i); - sc->vr_phy_addr = i; - vr_phy_writereg(sc, PHY_BMCR, PHY_BMCR_RESET); - DELAY(500); - while(vr_phy_readreg(sc, PHY_BMCR) - & PHY_BMCR_RESET); - if ((phy_sts = vr_phy_readreg(sc, PHY_BMSR))) - break; - } - if (phy_sts) { - phy_vid = vr_phy_readreg(sc, PHY_VENID); - phy_did = vr_phy_readreg(sc, PHY_DEVID); - if (bootverbose) - printf("vr%d: found PHY at address %d, ", - sc->vr_unit, sc->vr_phy_addr); - if (bootverbose) - printf("vendor id: %x device id: %x\n", - phy_vid, phy_did); - p = vr_phys; - while(p->vr_vid) { - if (phy_vid == p->vr_vid && - (phy_did | 0x000F) == p->vr_did) { - sc->vr_pinfo = p; - break; - } - p++; - } - if (sc->vr_pinfo == NULL) - sc->vr_pinfo = &vr_phys[PHY_UNKNOWN]; - if (bootverbose) - printf("vr%d: PHY type: %s\n", - sc->vr_unit, sc->vr_pinfo->vr_name); - } else { - printf("vr%d: MII without any phy!\n", sc->vr_unit); - goto fail; - } - - /* - * Do ifmedia setup. - */ - ifmedia_init(&sc->ifmedia, 0, vr_ifmedia_upd, vr_ifmedia_sts); - - vr_getmode_mii(sc); - vr_autoneg_mii(sc, VR_FLAG_FORCEDELAY, 1); - media = sc->ifmedia.ifm_media; - vr_stop(sc); - - ifmedia_set(&sc->ifmedia, media); - - /* - * Call MI attach routines. - */ - if_attach(ifp); - ether_ifattach(ifp); - -#if NBPFILTER > 0 - bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); -#endif - - at_shutdown(vr_shutdown, sc, SHUTDOWN_POST_SYNC); - -fail: - splx(s); - return; -} - -/* - * Initialize the transmit descriptors. - */ -static int vr_list_tx_init(sc) - struct vr_softc *sc; -{ - struct vr_chain_data *cd; - struct vr_list_data *ld; - int i; - - cd = &sc->vr_cdata; - ld = sc->vr_ldata; - for (i = 0; i < VR_TX_LIST_CNT; i++) { - cd->vr_tx_chain[i].vr_ptr = &ld->vr_tx_list[i]; - if (i == (VR_TX_LIST_CNT - 1)) - cd->vr_tx_chain[i].vr_nextdesc = - &cd->vr_tx_chain[0]; - else - cd->vr_tx_chain[i].vr_nextdesc = - &cd->vr_tx_chain[i + 1]; - } - - cd->vr_tx_free = &cd->vr_tx_chain[0]; - cd->vr_tx_tail = cd->vr_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 vr_list_rx_init(sc) - struct vr_softc *sc; -{ - struct vr_chain_data *cd; - struct vr_list_data *ld; - int i; - - cd = &sc->vr_cdata; - ld = sc->vr_ldata; - - for (i = 0; i < VR_RX_LIST_CNT; i++) { - cd->vr_rx_chain[i].vr_ptr = - (struct vr_desc *)&ld->vr_rx_list[i]; - if (vr_newbuf(sc, &cd->vr_rx_chain[i]) == ENOBUFS) - return(ENOBUFS); - if (i == (VR_RX_LIST_CNT - 1)) { - cd->vr_rx_chain[i].vr_nextdesc = - &cd->vr_rx_chain[0]; - ld->vr_rx_list[i].vr_next = - vtophys(&ld->vr_rx_list[0]); - } else { - cd->vr_rx_chain[i].vr_nextdesc = - &cd->vr_rx_chain[i + 1]; - ld->vr_rx_list[i].vr_next = - vtophys(&ld->vr_rx_list[i + 1]); - } - } - - cd->vr_rx_head = &cd->vr_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 vr_newbuf(sc, c) - struct vr_softc *sc; - struct vr_chain_onefrag *c; -{ - struct mbuf *m_new = NULL; - - MGETHDR(m_new, M_DONTWAIT, MT_DATA); - if (m_new == NULL) { - printf("vr%d: no memory for rx list -- packet dropped!\n", - sc->vr_unit); - return(ENOBUFS); - } - - MCLGET(m_new, M_DONTWAIT); - if (!(m_new->m_flags & M_EXT)) { - printf("vr%d: no memory for rx list -- packet dropped!\n", - sc->vr_unit); - m_freem(m_new); - return(ENOBUFS); - } - - c->vr_mbuf = m_new; - c->vr_ptr->vr_status = VR_RXSTAT; - c->vr_ptr->vr_data = vtophys(mtod(m_new, caddr_t)); - c->vr_ptr->vr_ctl = VR_RXCTL | VR_RXLEN; - - return(0); -} - -/* - * A frame has been uploaded: pass the resulting mbuf chain up to - * the higher level protocols. - */ -static void vr_rxeof(sc) - struct vr_softc *sc; -{ - struct ether_header *eh; - struct mbuf *m; - struct ifnet *ifp; - struct vr_chain_onefrag *cur_rx; - int total_len = 0; - u_int32_t rxstat; - - ifp = &sc->arpcom.ac_if; - - while(!((rxstat = sc->vr_cdata.vr_rx_head->vr_ptr->vr_status) & - VR_RXSTAT_OWN)) { - cur_rx = sc->vr_cdata.vr_rx_head; - sc->vr_cdata.vr_rx_head = cur_rx->vr_nextdesc; - - /* - * 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 & VR_RXSTAT_RXERR) { - ifp->if_ierrors++; - printf("vr%d: rx error: ", sc->vr_unit); - switch(rxstat & 0x000000FF) { - case VR_RXSTAT_CRCERR: - printf("crc error\n"); - break; - case VR_RXSTAT_FRAMEALIGNERR: - printf("frame alignment error\n"); - break; - case VR_RXSTAT_FIFOOFLOW: - printf("FIFO overflow\n"); - break; - case VR_RXSTAT_GIANT: - printf("received giant packet\n"); - break; - case VR_RXSTAT_RUNT: - printf("received runt packet\n"); - break; - case VR_RXSTAT_BUSERR: - printf("system bus error\n"); - break; - case VR_RXSTAT_BUFFERR: - printf("rx buffer error\n"); - break; - default: - printf("unknown rx error\n"); - break; - } - cur_rx->vr_ptr->vr_status = VR_RXSTAT; - cur_rx->vr_ptr->vr_ctl = VR_RXCTL|VR_RXLEN; - continue; - } - - /* No errors; receive the packet. */ - m = cur_rx->vr_mbuf; - total_len = VR_RXBYTES(cur_rx->vr_ptr->vr_status); - - /* - * XXX The VIA Rhine chip includes the CRC with every - * received frame, and there's no way to turn this - * behavior off (at least, I can't find anything in - * the manual that explains how to do it) so we have - * to trim off the CRC manually. - */ - total_len -= ETHER_CRC_LEN; - - /* - * Try to conjure up a new mbuf cluster. If that - * fails, it means we have an out of memory condition and - * should leave the buffer in place and continue. This will - * result in a lost packet, but there's little else we - * can do in this situation. - */ - if (vr_newbuf(sc, cur_rx) == ENOBUFS) { - ifp->if_ierrors++; - cur_rx->vr_ptr->vr_status = VR_RXSTAT; - cur_rx->vr_ptr->vr_ctl = VR_RXCTL|VR_RXLEN; - continue; - } - - ifp->if_ipackets++; - eh = mtod(m, struct ether_header *); - m->m_pkthdr.rcvif = ifp; - m->m_pkthdr.len = m->m_len = total_len; -#if NBPFILTER > 0 - /* - * 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; - } - } -#endif - /* Remove header from mbuf and pass it on. */ - m_adj(m, sizeof(struct ether_header)); - ether_input(ifp, eh, m); - } - - return; -} - -void vr_rxeoc(sc) - struct vr_softc *sc; -{ - - vr_rxeof(sc); - VR_CLRBIT16(sc, VR_COMMAND, VR_CMD_RX_ON); - CSR_WRITE_4(sc, VR_RXADDR, vtophys(sc->vr_cdata.vr_rx_head->vr_ptr)); - VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_ON); - VR_SETBIT16(sc, VR_COMMAND, VR_CMD_RX_GO); - - return; -} - -/* - * A frame was downloaded to the chip. It's safe for us to clean up - * the list buffers. - */ - -static void vr_txeof(sc) - struct vr_softc *sc; -{ - struct vr_chain *cur_tx; - struct ifnet *ifp; - register struct mbuf *n; - - ifp = &sc->arpcom.ac_if; - - /* Clear the timeout timer. */ - ifp->if_timer = 0; - - /* Sanity check. */ - if (sc->vr_cdata.vr_tx_head == NULL) - return; - - /* - * Go through our tx list and free mbufs for those - * frames that have been transmitted. - */ - while(sc->vr_cdata.vr_tx_head->vr_mbuf != NULL) { - u_int32_t txstat; - - cur_tx = sc->vr_cdata.vr_tx_head; - txstat = cur_tx->vr_ptr->vr_status; - - if (txstat & VR_TXSTAT_OWN) - break; - - if (txstat & VR_TXSTAT_ERRSUM) { - ifp->if_oerrors++; - if (txstat & VR_TXSTAT_DEFER) - ifp->if_collisions++; - if (txstat & VR_TXSTAT_LATECOLL) - ifp->if_collisions++; - } - - ifp->if_collisions +=(txstat & VR_TXSTAT_COLLCNT) >> 3; - - ifp->if_opackets++; - MFREE(cur_tx->vr_mbuf, n); - cur_tx->vr_mbuf = NULL; - - if (sc->vr_cdata.vr_tx_head == sc->vr_cdata.vr_tx_tail) { - sc->vr_cdata.vr_tx_head = NULL; - sc->vr_cdata.vr_tx_tail = NULL; - break; - } - - sc->vr_cdata.vr_tx_head = cur_tx->vr_nextdesc; - } - - return; -} - -/* - * TX 'end of channel' interrupt handler. - */ -static void vr_txeoc(sc) - struct vr_softc *sc; -{ - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - - ifp->if_timer = 0; - - if (sc->vr_cdata.vr_tx_head == NULL) { - ifp->if_flags &= ~IFF_OACTIVE; - sc->vr_cdata.vr_tx_tail = NULL; - if (sc->vr_want_auto) - vr_autoneg_mii(sc, VR_FLAG_SCHEDDELAY, 1); - } - - return; -} - -static void vr_intr(arg) - void *arg; -{ - struct vr_softc *sc; - struct ifnet *ifp; - u_int16_t status; - - sc = arg; - ifp = &sc->arpcom.ac_if; - - /* Supress unwanted interrupts. */ - if (!(ifp->if_flags & IFF_UP)) { - vr_stop(sc); - return; - } - - /* Disable interrupts. */ - CSR_WRITE_2(sc, VR_IMR, 0x0000); - - for (;;) { - - status = CSR_READ_2(sc, VR_ISR); - if (status) - CSR_WRITE_2(sc, VR_ISR, status); - - if ((status & VR_INTRS) == 0) - break; - - if (status & VR_ISR_RX_OK) - vr_rxeof(sc); - - if ((status & VR_ISR_RX_ERR) || (status & VR_ISR_RX_NOBUF) || - (status & VR_ISR_RX_NOBUF) || (status & VR_ISR_RX_OFLOW) || - (status & VR_ISR_RX_DROPPED)) { - vr_rxeof(sc); - vr_rxeoc(sc); - } - - if (status & VR_ISR_TX_OK) { - vr_txeof(sc); - vr_txeoc(sc); - } - - if ((status & VR_ISR_TX_UNDERRUN)||(status & VR_ISR_TX_ABRT)){ - ifp->if_oerrors++; - vr_txeof(sc); - if (sc->vr_cdata.vr_tx_head != NULL) { - VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON); - VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_GO); - } - } - - if (status & VR_ISR_BUSERR) { - vr_reset(sc); - vr_init(sc); - } - } - - /* Re-enable interrupts. */ - CSR_WRITE_2(sc, VR_IMR, VR_INTRS); - - if (ifp->if_snd.ifq_head != NULL) { - vr_start(ifp); - } - - return; -} - -/* - * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data - * pointers to the fragment pointers. - */ -static int vr_encap(sc, c, m_head) - struct vr_softc *sc; - struct vr_chain *c; - struct mbuf *m_head; -{ - int frag = 0; - struct vr_desc *f = NULL; - int total_len; - struct mbuf *m; - - m = m_head; - total_len = 0; - - /* - * The VIA Rhine wants packet buffers to be longword - * aligned, but very often our mbufs aren't. Rather than - * waste time trying to decide when to copy and when not - * to copy, just do it all the time. - */ - if (m != NULL) { - struct mbuf *m_new = NULL; - - MGETHDR(m_new, M_DONTWAIT, MT_DATA); - if (m_new == NULL) { - printf("vr%d: no memory for tx list", sc->vr_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("vr%d: no memory for tx list", - sc->vr_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; - /* - * The Rhine chip doesn't auto-pad, so we have to make - * sure to pad short frames out to the minimum frame length - * ourselves. - */ - if (m_head->m_len < VR_MIN_FRAMELEN) { - m_new->m_pkthdr.len += VR_MIN_FRAMELEN - m_new->m_len; - m_new->m_len = m_new->m_pkthdr.len; - } - f = c->vr_ptr; - f->vr_data = vtophys(mtod(m_new, caddr_t)); - f->vr_ctl = total_len = m_new->m_len; - f->vr_ctl |= VR_TXCTL_TLINK|VR_TXCTL_FIRSTFRAG; - f->vr_status = 0; - frag = 1; - } - - c->vr_mbuf = m_head; - c->vr_ptr->vr_ctl |= VR_TXCTL_LASTFRAG|VR_TXCTL_FINT; - c->vr_ptr->vr_next = vtophys(c->vr_nextdesc->vr_ptr); - - 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 vr_start(ifp) - struct ifnet *ifp; -{ - struct vr_softc *sc; - struct mbuf *m_head = NULL; - struct vr_chain *cur_tx = NULL, *start_tx; - - sc = ifp->if_softc; - - if (sc->vr_autoneg) { - sc->vr_tx_pend = 1; - return; - } - - /* - * Check for an available queue slot. If there are none, - * punt. - */ - if (sc->vr_cdata.vr_tx_free->vr_mbuf != NULL) { - ifp->if_flags |= IFF_OACTIVE; - return; - } - - start_tx = sc->vr_cdata.vr_tx_free; - - while(sc->vr_cdata.vr_tx_free->vr_mbuf == NULL) { - IF_DEQUEUE(&ifp->if_snd, m_head); - if (m_head == NULL) - break; - - /* Pick a descriptor off the free list. */ - cur_tx = sc->vr_cdata.vr_tx_free; - sc->vr_cdata.vr_tx_free = cur_tx->vr_nextdesc; - - /* Pack the data into the descriptor. */ - vr_encap(sc, cur_tx, m_head); - - if (cur_tx != start_tx) - VR_TXOWN(cur_tx) = VR_TXSTAT_OWN; - -#if NBPFILTER > 0 - /* - * If there's a BPF listener, bounce a copy of this frame - * to him. - */ - if (ifp->if_bpf) - bpf_mtap(ifp, cur_tx->vr_mbuf); -#endif - VR_TXOWN(cur_tx) = VR_TXSTAT_OWN; - VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_TX_GO); - } - - /* - * If there are no frames queued, bail. - */ - if (cur_tx == NULL) - return; - - sc->vr_cdata.vr_tx_tail = cur_tx; - - if (sc->vr_cdata.vr_tx_head == NULL) - sc->vr_cdata.vr_tx_head = start_tx; - - /* - * Set a timeout in case the chip goes out to lunch. - */ - ifp->if_timer = 5; - - return; -} - -static void vr_init(xsc) - void *xsc; -{ - struct vr_softc *sc = xsc; - struct ifnet *ifp = &sc->arpcom.ac_if; - u_int16_t phy_bmcr = 0; - int s; - - if (sc->vr_autoneg) - return; - - s = splimp(); - - if (sc->vr_pinfo != NULL) - phy_bmcr = vr_phy_readreg(sc, PHY_BMCR); - - /* - * Cancel pending I/O and free all RX/TX buffers. - */ - vr_stop(sc); - vr_reset(sc); - - VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_THRESH); - VR_SETBIT(sc, VR_RXCFG, VR_RXTHRESH_STORENFWD); - - VR_CLRBIT(sc, VR_TXCFG, VR_TXCFG_TX_THRESH); - VR_SETBIT(sc, VR_TXCFG, VR_TXTHRESH_STORENFWD); - - /* Init circular RX list. */ - if (vr_list_rx_init(sc) == ENOBUFS) { - printf("vr%d: initialization failed: no " - "memory for rx buffers\n", sc->vr_unit); - vr_stop(sc); - (void)splx(s); - return; - } - - /* - * Init tx descriptors. - */ - vr_list_tx_init(sc); - - /* If we want promiscuous mode, set the allframes bit. */ - if (ifp->if_flags & IFF_PROMISC) - VR_SETBIT(sc, VR_RXCFG, VR_RXCFG_RX_PROMISC); - else - VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_PROMISC); - - /* Set capture broadcast bit to capture broadcast frames. */ - if (ifp->if_flags & IFF_BROADCAST) - VR_SETBIT(sc, VR_RXCFG, VR_RXCFG_RX_BROAD); - else - VR_CLRBIT(sc, VR_RXCFG, VR_RXCFG_RX_BROAD); - - /* - * Program the multicast filter, if necessary. - */ - vr_setmulti(sc); - - /* - * Load the address of the RX list. - */ - CSR_WRITE_4(sc, VR_RXADDR, vtophys(sc->vr_cdata.vr_rx_head->vr_ptr)); - - /* Enable receiver and transmitter. */ - CSR_WRITE_2(sc, VR_COMMAND, VR_CMD_TX_NOPOLL|VR_CMD_START| - VR_CMD_TX_ON|VR_CMD_RX_ON| - VR_CMD_RX_GO); - - vr_setcfg(sc, vr_phy_readreg(sc, PHY_BMCR)); - - CSR_WRITE_4(sc, VR_TXADDR, vtophys(&sc->vr_ldata->vr_tx_list[0])); - - /* - * Enable interrupts. - */ - CSR_WRITE_2(sc, VR_ISR, 0xFFFF); - CSR_WRITE_2(sc, VR_IMR, VR_INTRS); - - /* Restore state of BMCR */ - if (sc->vr_pinfo != NULL) - vr_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 vr_ifmedia_upd(ifp) - struct ifnet *ifp; -{ - struct vr_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) - vr_autoneg_mii(sc, VR_FLAG_SCHEDDELAY, 1); - else - vr_setmode_mii(sc, ifm->ifm_media); - - return(0); -} - -/* - * Report current media status. - */ -static void vr_ifmedia_sts(ifp, ifmr) - struct ifnet *ifp; - struct ifmediareq *ifmr; -{ - struct vr_softc *sc; - u_int16_t advert = 0, ability = 0; - - sc = ifp->if_softc; - - ifmr->ifm_active = IFM_ETHER; - - if (!(vr_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_AUTONEGENBL)) { - if (vr_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 (vr_phy_readreg(sc, PHY_BMCR) & PHY_BMCR_DUPLEX) - ifmr->ifm_active |= IFM_FDX; - else - ifmr->ifm_active |= IFM_HDX; - return; - } - - ability = vr_phy_readreg(sc, PHY_LPAR); - advert = vr_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 vr_ioctl(ifp, command, data) - struct ifnet *ifp; - u_long command; - caddr_t data; -{ - struct vr_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) { - vr_init(sc); - } else { - if (ifp->if_flags & IFF_RUNNING) - vr_stop(sc); - } - error = 0; - break; - case SIOCADDMULTI: - case SIOCDELMULTI: - vr_setmulti(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 vr_watchdog(ifp) - struct ifnet *ifp; -{ - struct vr_softc *sc; - - sc = ifp->if_softc; - - if (sc->vr_autoneg) { - vr_autoneg_mii(sc, VR_FLAG_DELAYTIMEO, 1); - return; - } - - ifp->if_oerrors++; - printf("vr%d: watchdog timeout\n", sc->vr_unit); - - if (!(vr_phy_readreg(sc, PHY_BMSR) & PHY_BMSR_LINKSTAT)) - printf("vr%d: no carrier - transceiver cable problem?\n", - sc->vr_unit); - - vr_stop(sc); - vr_reset(sc); - vr_init(sc); - - if (ifp->if_snd.ifq_head != NULL) - vr_start(ifp); - - return; -} - -/* - * Stop the adapter and free any mbufs allocated to the - * RX and TX lists. - */ -static void vr_stop(sc) - struct vr_softc *sc; -{ - register int i; - struct ifnet *ifp; - - ifp = &sc->arpcom.ac_if; - ifp->if_timer = 0; - - VR_SETBIT16(sc, VR_COMMAND, VR_CMD_STOP); - VR_CLRBIT16(sc, VR_COMMAND, (VR_CMD_RX_ON|VR_CMD_TX_ON)); - CSR_WRITE_2(sc, VR_IMR, 0x0000); - CSR_WRITE_4(sc, VR_TXADDR, 0x00000000); - CSR_WRITE_4(sc, VR_RXADDR, 0x00000000); - - /* - * Free data in the RX lists. - */ - for (i = 0; i < VR_RX_LIST_CNT; i++) { - if (sc->vr_cdata.vr_rx_chain[i].vr_mbuf != NULL) { - m_freem(sc->vr_cdata.vr_rx_chain[i].vr_mbuf); - sc->vr_cdata.vr_rx_chain[i].vr_mbuf = NULL; - } - } - bzero((char *)&sc->vr_ldata->vr_rx_list, - sizeof(sc->vr_ldata->vr_rx_list)); - - /* - * Free the TX list buffers. - */ - for (i = 0; i < VR_TX_LIST_CNT; i++) { - if (sc->vr_cdata.vr_tx_chain[i].vr_mbuf != NULL) { - m_freem(sc->vr_cdata.vr_tx_chain[i].vr_mbuf); - sc->vr_cdata.vr_tx_chain[i].vr_mbuf = NULL; - } - } - - bzero((char *)&sc->vr_ldata->vr_tx_list, - sizeof(sc->vr_ldata->vr_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 vr_shutdown(howto, arg) - int howto; - void *arg; -{ - struct vr_softc *sc = (struct vr_softc *)arg; - - vr_stop(sc); - - return; -} - -static struct pci_device vr_device = { - "vr", - vr_probe, - vr_attach, - &vr_count, - NULL -}; -DATA_SET(pcidevice_set, vr_device); |