diff options
author | wpaul <wpaul@FreeBSD.org> | 1998-12-04 18:01:24 +0000 |
---|---|---|
committer | wpaul <wpaul@FreeBSD.org> | 1998-12-04 18:01:24 +0000 |
commit | dfd7dd0c59fbea6359445a67f004df6b1811565a (patch) | |
tree | 61a812372ae66191942ae08dc087a12c0efcb1d4 /sys/dev/vr | |
parent | 118a0c7f05f005cbe6f6157800f74b14601b655c (diff) | |
download | FreeBSD-src-dfd7dd0c59fbea6359445a67f004df6b1811565a.zip FreeBSD-src-dfd7dd0c59fbea6359445a67f004df6b1811565a.tar.gz |
An early Christmas present: add driver support for a whole bunch of
PCI fast ethernet adapters, plus man pages.
if_pn.c: Netgear FA310TX model D1, LinkSys LNE100TX, Matrox FastNIC 10/100,
various other PNIC devices
if_mx.c: NDC Communications SOHOware SFA100 (Macronix 98713A), various
other boards based on the Macronix 98713, 98713A, 98715, 98715A
and 98725 chips
if_vr.c: D-Link DFE530-TX, other boards based on the VIA Rhine and
Rhine II chips (note: the D-Link and certain other cards
that actually use a Rhine II chip still return the PCI
device ID of the Rhine I. I don't know why, and it doesn't
really matter since the driver treats both chips the same
anyway.)
if_wb.c: Trendware TE100-PCIE and various other cards based on the
Winbond W89C840F chip (the Trendware card is identical to
the sample boards Winbond sent me, so who knows how many
clones there are running around)
All drivers include support for ifmedia, BPF and hardware multicast
filtering.
Also updated GENERIC, LINT, RELNOTES.TXT, userconfig and
sysinstall device list.
I also have a driver for the ASIX AX88140A in the works.
Diffstat (limited to 'sys/dev/vr')
-rw-r--r-- | sys/dev/vr/if_vr.c | 1962 | ||||
-rw-r--r-- | sys/dev/vr/if_vrreg.h | 615 |
2 files changed, 2577 insertions, 0 deletions
diff --git a/sys/dev/vr/if_vr.c b/sys/dev/vr/if_vr.c new file mode 100644 index 0000000..a5a2fc4 --- /dev/null +++ b/sys/dev/vr/if_vr.c @@ -0,0 +1,1962 @@ +/* + * 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 1.13 1998/12/01 22:08:11 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 char rcsid[] = + "$Id: if_vr.c,v 1.13 1998/12/01 22:08:11 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 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 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_CHAIN | (MCLBYTES - 1); + + 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_CHAIN | (MCLBYTES - 1); + continue; + } + + /* No errors; receive the packet. */ + m = cur_rx->vr_mbuf; + total_len = VR_RXBYTES(cur_rx->vr_ptr->vr_status); + + /* + * 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_FIRSTFRAG|VR_RXSTAT_LASTFRAG; + cur_rx->vr_ptr->vr_ctl = + VR_RXCTL_CHAIN | (MCLBYTES - 1); + 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) || txstat == VR_UNSENT) + 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); + } else { + if (VR_TXOWN(sc->vr_cdata.vr_tx_head) == VR_UNSENT) { + VR_TXOWN(sc->vr_cdata.vr_tx_head) = VR_TXSTAT_OWN; + ifp->if_timer = 5; + VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_TX_GO); + } + } + + 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; + 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 + } + + /* + * Place the request for the upload interrupt + * in the last descriptor in the chain. This way, if + * we're chaining several packets at once, we'll only + * get an interupt once for the whole chain rather than + * once for each packet. + */ + cur_tx->vr_ptr->vr_ctl |= VR_TXCTL_FINT; + sc->vr_cdata.vr_tx_tail = cur_tx; + + if (sc->vr_cdata.vr_tx_head == NULL) { + sc->vr_cdata.vr_tx_head = start_tx; + VR_TXOWN(start_tx) = VR_TXSTAT_OWN; + VR_SETBIT16(sc, VR_COMMAND, VR_CMD_TX_ON|VR_CMD_TX_GO); + } else { + VR_TXOWN(start_tx) = VR_UNSENT; + } + + /* + * 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); diff --git a/sys/dev/vr/if_vrreg.h b/sys/dev/vr/if_vrreg.h new file mode 100644 index 0000000..42f3a13 --- /dev/null +++ b/sys/dev/vr/if_vrreg.h @@ -0,0 +1,615 @@ +/* + * 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_vrreg.h,v 1.8 1998/12/01 22:08:11 wpaul Exp $ + */ + +/* + * Rhine register definitions. + */ + +#define VR_PAR0 0x00 /* node address 0 to 4 */ +#define VR_PAR1 0x04 /* node address 2 to 6 */ +#define VR_RXCFG 0x06 /* receiver config register */ +#define VR_TXCFG 0x07 /* transmit config register */ +#define VR_COMMAND 0x08 /* command register */ +#define VR_ISR 0x0C /* interrupt/status register */ +#define VR_IMR 0x0E /* interrupt mask register */ +#define VR_MAR0 0x10 /* multicast hash 0 */ +#define VR_MAR1 0x14 /* multicast hash 1 */ +#define VR_RXADDR 0x18 /* rx descriptor list start addr */ +#define VR_TXADDR 0x1C /* tx descriptor list start addr */ +#define VR_CURRXDESC0 0x20 +#define VR_CURRXDESC1 0x24 +#define VR_CURRXDESC2 0x28 +#define VR_CURRXDESC3 0x2C +#define VR_NEXTRXDESC0 0x30 +#define VR_NEXTRXDESC1 0x34 +#define VR_NEXTRXDESC2 0x38 +#define VR_NEXTRXDESC3 0x3C +#define VR_CURTXDESC0 0x40 +#define VR_CURTXDESC1 0x44 +#define VR_CURTXDESC2 0x48 +#define VR_CURTXDESC3 0x4C +#define VR_NEXTTXDESC0 0x50 +#define VR_NEXTTXDESC1 0x54 +#define VR_NEXTTXDESC2 0x58 +#define VR_NEXTTXDESC3 0x5C +#define VR_CURRXDMA 0x60 /* current RX DMA address */ +#define VR_CURTXDMA 0x64 /* current TX DMA address */ +#define VR_TALLYCNT 0x68 /* tally counter test register */ +#define VR_PHYADDR 0x6C +#define VR_MIISTAT 0x6D +#define VR_BCR0 0x6E +#define VR_BCR1 0x6F +#define VR_MIICMD 0x70 +#define VR_MIIADDR 0x71 +#define VR_MIIDATA 0x72 +#define VR_EECSR 0x74 +#define VR_TEST 0x75 +#define VR_GPIO 0x76 +#define VR_CONFIG 0x78 +#define VR_MPA_CNT 0x7C +#define VR_CRC_CNT 0x7E + +/* + * RX config bits. + */ +#define VR_RXCFG_RX_ERRPKTS 0x01 +#define VR_RXCFG_RX_RUNT 0x02 +#define VR_RXCFG_RX_MULTI 0x04 +#define VR_RXCFG_RX_BROAD 0x08 +#define VR_RXCFG_RX_PROMISC 0x10 +#define VR_RXCFG_RX_THRESH 0xE0 + +#define VR_RXTHRESH_32BYTES 0x00 +#define VR_RXTHRESH_64BYTES 0x20 +#define VR_RXTHRESH_128BYTES 0x40 +#define VR_RXTHRESH_256BYTES 0x60 +#define VR_RXTHRESH_512BYTES 0x80 +#define VR_RXTHRESH_768BYTES 0xA0 +#define VR_RXTHRESH_1024BYTES 0xC0 +#define VR_RXTHRESH_STORENFWD 0xE0 + +/* + * TX config bits. + */ +#define VR_TXCFG_RSVD0 0x01 +#define VR_TXCFG_LOOPBKMODE 0x06 +#define VR_TXCFG_BACKOFF 0x08 +#define VR_TXCFG_RSVD1 0x10 +#define VR_TXCFG_TX_THRESH 0xE0 + +#define VR_TXTHRESH_32BYTES 0x00 +#define VR_TXTHRESH_64BYTES 0x20 +#define VR_TXTHRESH_128BYTES 0x40 +#define VR_TXTHRESH_256BYTES 0x60 +#define VR_TXTHRESH_512BYTES 0x80 +#define VR_TXTHRESH_768BYTES 0xA0 +#define VR_TXTHRESH_1024BYTES 0xC0 +#define VR_TXTHRESH_STORENFWD 0xE0 + +/* + * Command register bits. + */ +#define VR_CMD_INIT 0x0001 +#define VR_CMD_START 0x0002 +#define VR_CMD_STOP 0x0004 +#define VR_CMD_RX_ON 0x0008 +#define VR_CMD_TX_ON 0x0010 +#define VR_CMD_TX_GO 0x0020 +#define VR_CMD_RX_GO 0x0040 +#define VR_CMD_RSVD 0x0080 +#define VR_CMD_RX_EARLY 0x0100 +#define VR_CMD_TX_EARLY 0x0200 +#define VR_CMD_FULLDUPLEX 0x0400 +#define VR_CMD_TX_NOPOLL 0x0800 + +#define VR_CMD_RESET 0x8000 + +/* + * Interrupt status bits. + */ +#define VR_ISR_RX_OK 0x0001 /* packet rx ok */ +#define VR_ISR_TX_OK 0x0002 /* packet tx ok */ +#define VR_ISR_RX_ERR 0x0004 /* packet rx with err */ +#define VR_ISR_TX_ABRT 0x0008 /* tx aborted due to excess colls */ +#define VR_ISR_TX_UNDERRUN 0x0010 /* tx buffer underflow */ +#define VR_ISR_RX_NOBUF 0x0020 /* no rx buffer available */ +#define VR_ISR_BUSERR 0x0040 /* PCI bus error */ +#define VR_ISR_STATSOFLOW 0x0080 /* stats counter oflow */ +#define VR_ISR_RX_EARLY 0x0100 /* rx early */ +#define VR_ISR_LINKSTAT 0x0200 /* MII status change */ +#define VR_ISR_RX_OFLOW 0x0400 /* rx FIFO overflow */ +#define VR_ISR_RX_DROPPED 0x0800 +#define VR_ISR_RX_NOBUF2 0x1000 +#define VR_ISR_TX_ABRT2 0x2000 +#define VR_ISR_LINKSTAT2 0x4000 +#define VR_ISR_MAGICPACKET 0x8000 + +/* + * Interrupt mask bits. + */ +#define VR_IMR_RX_OK 0x0001 /* packet rx ok */ +#define VR_IMR_TX_OK 0x0002 /* packet tx ok */ +#define VR_IMR_RX_ERR 0x0004 /* packet rx with err */ +#define VR_IMR_TX_ABRT 0x0008 /* tx aborted due to excess colls */ +#define VR_IMR_TX_UNDERRUN 0x0010 /* tx buffer underflow */ +#define VR_IMR_RX_NOBUF 0x0020 /* no rx buffer available */ +#define VR_IMR_BUSERR 0x0040 /* PCI bus error */ +#define VR_IMR_STATSOFLOW 0x0080 /* stats counter oflow */ +#define VR_IMR_RX_EARLY 0x0100 /* rx early */ +#define VR_IMR_LINKSTAT 0x0200 /* MII status change */ +#define VR_IMR_RX_OFLOW 0x0400 /* rx FIFO overflow */ +#define VR_IMR_RX_DROPPED 0x0800 +#define VR_IMR_RX_NOBUF2 0x1000 +#define VR_IMR_TX_ABRT2 0x2000 +#define VR_IMR_LINKSTAT2 0x4000 +#define VR_IMR_MAGICPACKET 0x8000 + +#define VR_INTRS \ + (VR_IMR_RX_OK|VR_IMR_TX_OK|VR_IMR_RX_NOBUF| \ + VR_IMR_TX_ABRT|VR_IMR_TX_UNDERRUN|VR_IMR_BUSERR| \ + VR_IMR_RX_ERR|VR_ISR_RX_DROPPED) + +/* + * MII status register. + */ + +#define VR_MIISTAT_SPEED 0x01 +#define VR_MIISTAT_LINKFAULT 0x02 +#define VR_MIISTAT_MGTREADERR 0x04 +#define VR_MIISTAT_MIIERR 0x08 +#define VR_MIISTAT_PHYOPT 0x10 +#define VR_MIISTAT_MDC_SPEED 0x20 +#define VR_MIISTAT_RSVD 0x40 +#define VR_MIISTAT_GPIO1POLL 0x80 + +/* + * MII command register bits. + */ +#define VR_MIICMD_CLK 0x01 +#define VR_MIICMD_DATAOUT 0x02 +#define VR_MIICMD_DATAIN 0x04 +#define VR_MIICMD_DIR 0x08 +#define VR_MIICMD_DIRECTPGM 0x10 +#define VR_MIICMD_WRITE_ENB 0x20 +#define VR_MIICMD_READ_ENB 0x40 +#define VR_MIICMD_AUTOPOLL 0x80 + +/* + * EEPROM control bits. + */ +#define VR_EECSR_DATAIN 0x01 /* data out */ +#define VR_EECSR_DATAOUT 0x02 /* data in */ +#define VR_EECSR_CLK 0x04 /* clock */ +#define VR_EECSR_CS 0x08 /* chip select */ +#define VR_EECSR_DPM 0x10 +#define VR_EECSR_LOAD 0x20 +#define VR_EECSR_EMBP 0x40 +#define VR_EECSR_EEPR 0x80 + +#define VR_EECMD_WRITE 0x140 +#define VR_EECMD_READ 0x180 +#define VR_EECMD_ERASE 0x1c0 + +/* + * Test register bits. + */ +#define VR_TEST_TEST0 0x01 +#define VR_TEST_TEST1 0x02 +#define VR_TEST_TEST2 0x04 +#define VR_TEST_TSTUD 0x08 +#define VR_TEST_TSTOV 0x10 +#define VR_TEST_BKOFF 0x20 +#define VR_TEST_FCOL 0x40 +#define VR_TEST_HBDES 0x80 + +/* + * Config register bits. + */ +#define VR_CFG_GPIO2OUTENB 0x00000001 +#define VR_CFG_GPIO2OUT 0x00000002 /* gen. purp. pin */ +#define VR_CFG_GPIO2IN 0x00000004 /* gen. purp. pin */ +#define VR_CFG_AUTOOPT 0x00000008 /* enable rx/tx autopoll */ +#define VR_CFG_MIIOPT 0x00000010 +#define VR_CFG_MMIENB 0x00000020 /* memory mapped mode enb */ +#define VR_CFG_JUMPER 0x00000040 /* PHY and oper. mode select */ +#define VR_CFG_EELOAD 0x00000080 /* enable EEPROM programming */ +#define VR_CFG_LATMENB 0x00000100 /* larency timer effect enb. */ +#define VR_CFG_MRREADWAIT 0x00000200 +#define VR_CFG_MRWRITEWAIT 0x00000400 +#define VR_CFG_RX_ARB 0x00000800 +#define VR_CFG_TX_ARB 0x00001000 +#define VR_CFG_READMULTI 0x00002000 +#define VR_CFG_TX_PACE 0x00004000 +#define VR_CFG_TX_QDIS 0x00008000 +#define VR_CFG_ROMSEL0 0x00010000 +#define VR_CFG_ROMSEL1 0x00020000 +#define VR_CFG_ROMSEL2 0x00040000 +#define VR_CFG_ROMTIMESEL 0x00080000 +#define VR_CFG_RSVD0 0x00100000 +#define VR_CFG_ROMDLY 0x00200000 +#define VR_CFG_ROMOPT 0x00400000 +#define VR_CFG_RSVD1 0x00800000 +#define VR_CFG_BACKOFFOPT 0x01000000 +#define VR_CFG_BACKOFFMOD 0x02000000 +#define VR_CFG_CAPEFFECT 0x04000000 +#define VR_CFG_BACKOFFRAND 0x08000000 +#define VR_CFG_MAGICKPACKET 0x10000000 +#define VR_CFG_PCIREADLINE 0x20000000 +#define VR_CFG_DIAG 0x40000000 +#define VR_CFG_GPIOEN 0x80000000 + +/* + * Rhine TX/RX list structure. + */ + +struct vr_desc { + u_int32_t vr_status; + u_int32_t vr_ctl; + u_int32_t vr_ptr1; + u_int32_t vr_ptr2; +}; + +#define vr_data vr_ptr1 +#define vr_next vr_ptr2 + + +#define VR_RXSTAT_RXERR 0x00000001 +#define VR_RXSTAT_CRCERR 0x00000002 +#define VR_RXSTAT_FRAMEALIGNERR 0x00000004 +#define VR_RXSTAT_FIFOOFLOW 0x00000008 +#define VR_RXSTAT_GIANT 0x00000010 +#define VR_RXSTAT_RUNT 0x00000020 +#define VR_RXSTAT_BUSERR 0x00000040 +#define VR_RXSTAT_BUFFERR 0x00000080 +#define VR_RXSTAT_LASTFRAG 0x00000100 +#define VR_RXSTAT_FIRSTFRAG 0x00000200 +#define VR_RXSTAT_RLINK 0x00000400 +#define VR_RXSTAT_RX_PHYS 0x00000800 +#define VR_RXSTAT_RX_BROAD 0x00001000 +#define VR_RXSTAT_RX_MULTI 0x00002000 +#define VR_RXSTAT_RX_OK 0x00004000 +#define VR_RXSTAT_RXLEN 0x07FF0000 +#define VR_RXSTAT_RXLEN_EXT 0x78000000 +#define VR_RXSTAT_OWN 0x80000000 + +#define VR_RXBYTES(x) ((x & VR_RXSTAT_RXLEN) >> 16) +#define VR_RXSTAT (VR_RXSTAT_FIRSTFRAG|VR_RXSTAT_LASTFRAG|VR_RXSTAT_OWN) + +#define VR_RXCTL_BUFLEN 0x000007FF +#define VR_RXCTL_BUFLEN_EXT 0x00007800 +#define VR_RXCTL_CHAIN 0x00008000 +#define VR_RXCTL_RX_INTR 0x00800000 + + +#define VR_TXSTAT_DEFER 0x00000001 +#define VR_TXSTAT_UNDERRUN 0x00000002 +#define VR_TXSTAT_COLLCNT 0x00000078 +#define VR_TXSTAT_SQE 0x00000080 +#define VR_TXSTAT_ABRT 0x00000100 +#define VR_TXSTAT_LATECOLL 0x00000200 +#define VR_TXSTAT_CARRLOST 0x00000400 +#define VR_TXSTAT_BUSERR 0x00002000 +#define VR_TXSTAT_JABTIMEO 0x00004000 +#define VR_TXSTAT_ERRSUM 0x00008000 +#define VR_TXSTAT_OWN 0x80000000 + +#define VR_TXCTL_BUFLEN 0x000007FF +#define VR_TXCTL_BUFLEN_EXT 0x00007800 +#define VR_TXCTL_TLINK 0x00008000 +#define VR_TXCTL_FIRSTFRAG 0x00200000 +#define VR_TXCTL_LASTFRAG 0x00400000 +#define VR_TXCTL_FINT 0x00800000 + + +#define VR_MAXFRAGS 16 +#define VR_RX_LIST_CNT 64 +#define VR_TX_LIST_CNT 64 +#define VR_MIN_FRAMELEN 60 +#define VR_FRAMELEN 1536 + +#define VR_TXOWN(x) x->vr_ptr->vr_status +#define VR_UNSENT 0x12341234 + +struct vr_list_data { + struct vr_desc vr_rx_list[VR_RX_LIST_CNT]; + struct vr_desc vr_tx_list[VR_TX_LIST_CNT]; +}; + +struct vr_chain { + struct vr_desc *vr_ptr; + struct mbuf *vr_mbuf; + struct vr_chain *vr_nextdesc; +}; + +struct vr_chain_onefrag { + struct vr_desc *vr_ptr; + struct mbuf *vr_mbuf; + struct vr_chain_onefrag *vr_nextdesc; +}; + +struct vr_chain_data { + struct vr_chain_onefrag vr_rx_chain[VR_RX_LIST_CNT]; + struct vr_chain vr_tx_chain[VR_TX_LIST_CNT]; + + struct vr_chain_onefrag *vr_rx_head; + + struct vr_chain *vr_tx_head; + struct vr_chain *vr_tx_tail; + struct vr_chain *vr_tx_free; +}; + +struct vr_type { + u_int16_t vr_vid; + u_int16_t vr_did; + char *vr_name; +}; + +struct vr_mii_frame { + u_int8_t mii_stdelim; + u_int8_t mii_opcode; + u_int8_t mii_phyaddr; + u_int8_t mii_regaddr; + u_int8_t mii_turnaround; + u_int16_t mii_data; +}; + +/* + * MII constants + */ +#define VR_MII_STARTDELIM 0x01 +#define VR_MII_READOP 0x02 +#define VR_MII_WRITEOP 0x01 +#define VR_MII_TURNAROUND 0x02 + +#define VR_FLAG_FORCEDELAY 1 +#define VR_FLAG_SCHEDDELAY 2 +#define VR_FLAG_DELAYTIMEO 3 + +struct vr_softc { + struct arpcom arpcom; /* interface info */ + struct ifmedia ifmedia; /* media info */ + bus_space_handle_t vr_bhandle; /* bus space handle */ + bus_space_tag_t vr_btag; /* bus space tag */ + struct vr_type *vr_info; /* Rhine adapter info */ + struct vr_type *vr_pinfo; /* phy info */ + u_int8_t vr_unit; /* interface number */ + u_int8_t vr_type; + u_int8_t vr_phy_addr; /* PHY address */ + u_int8_t vr_tx_pend; /* TX pending */ + u_int8_t vr_want_auto; + u_int8_t vr_autoneg; + caddr_t vr_ldata_ptr; + struct vr_list_data *vr_ldata; + struct vr_chain_data vr_cdata; +}; + +/* + * register space access macros + */ +#define CSR_WRITE_4(sc, reg, val) \ + bus_space_write_4(sc->vr_btag, sc->vr_bhandle, reg, val) +#define CSR_WRITE_2(sc, reg, val) \ + bus_space_write_2(sc->vr_btag, sc->vr_bhandle, reg, val) +#define CSR_WRITE_1(sc, reg, val) \ + bus_space_write_1(sc->vr_btag, sc->vr_bhandle, reg, val) + +#define CSR_READ_4(sc, reg) \ + bus_space_read_4(sc->vr_btag, sc->vr_bhandle, reg) +#define CSR_READ_2(sc, reg) \ + bus_space_read_2(sc->vr_btag, sc->vr_bhandle, reg) +#define CSR_READ_1(sc, reg) \ + bus_space_read_1(sc->vr_btag, sc->vr_bhandle, reg) + +#define VR_TIMEOUT 1000 + +/* + * General constants that are fun to know. + * + * VIA vendor ID + */ +#define VIA_VENDORID 0x1106 + +/* + * VIA Rhine device IDs. + */ +#define VIA_DEVICEID_RHINE 0x3043 +#define VIA_DEVICEID_RHINE_II 0x6100 + + +/* + * Texas Instruments PHY identifiers + */ +#define TI_PHY_VENDORID 0x4000 +#define TI_PHY_10BT 0x501F +#define TI_PHY_100VGPMI 0x502F + +/* + * These ID values are for the NS DP83840A 10/100 PHY + */ +#define NS_PHY_VENDORID 0x2000 +#define NS_PHY_83840A 0x5C0F + +/* + * Level 1 10/100 PHY + */ +#define LEVEL1_PHY_VENDORID 0x7810 +#define LEVEL1_PHY_LXT970 0x000F + +/* + * Intel 82555 10/100 PHY + */ +#define INTEL_PHY_VENDORID 0x0A28 +#define INTEL_PHY_82555 0x015F + +/* + * SEEQ 80220 10/100 PHY + */ +#define SEEQ_PHY_VENDORID 0x0016 +#define SEEQ_PHY_80220 0xF83F + + +/* + * PCI low memory base and low I/O base register, and + * other PCI registers. + */ + +#define VR_PCI_VENDOR_ID 0x00 +#define VR_PCI_DEVICE_ID 0x02 +#define VR_PCI_COMMAND 0x04 +#define VR_PCI_STATUS 0x06 +#define VR_PCI_CLASSCODE 0x09 +#define VR_PCI_LATENCY_TIMER 0x0D +#define VR_PCI_HEADER_TYPE 0x0E +#define VR_PCI_LOIO 0x10 +#define VR_PCI_LOMEM 0x14 +#define VR_PCI_BIOSROM 0x30 +#define VR_PCI_INTLINE 0x3C +#define VR_PCI_INTPIN 0x3D +#define VR_PCI_MINGNT 0x3E +#define VR_PCI_MINLAT 0x0F +#define VR_PCI_RESETOPT 0x48 +#define VR_PCI_EEPROM_DATA 0x4C + +/* power management registers */ +#define VR_PCI_CAPID 0xDC /* 8 bits */ +#define VR_PCI_NEXTPTR 0xDD /* 8 bits */ +#define VR_PCI_PWRMGMTCAP 0xDE /* 16 bits */ +#define VR_PCI_PWRMGMTCTRL 0xE0 /* 16 bits */ + +#define VR_PSTATE_MASK 0x0003 +#define VR_PSTATE_D0 0x0000 +#define VR_PSTATE_D1 0x0002 +#define VR_PSTATE_D2 0x0002 +#define VR_PSTATE_D3 0x0003 +#define VR_PME_EN 0x0010 +#define VR_PME_STATUS 0x8000 + +#define PHY_UNKNOWN 6 + +#define VR_PHYADDR_MIN 0x00 +#define VR_PHYADDR_MAX 0x1F + +#define PHY_BMCR 0x00 +#define PHY_BMSR 0x01 +#define PHY_VENID 0x02 +#define PHY_DEVID 0x03 +#define PHY_ANAR 0x04 +#define PHY_LPAR 0x05 +#define PHY_ANEXP 0x06 + +#define PHY_ANAR_NEXTPAGE 0x8000 +#define PHY_ANAR_RSVD0 0x4000 +#define PHY_ANAR_TLRFLT 0x2000 +#define PHY_ANAR_RSVD1 0x1000 +#define PHY_ANAR_RSVD2 0x0800 +#define PHY_ANAR_RSVD3 0x0400 +#define PHY_ANAR_100BT4 0x0200 +#define PHY_ANAR_100BTXFULL 0x0100 +#define PHY_ANAR_100BTXHALF 0x0080 +#define PHY_ANAR_10BTFULL 0x0040 +#define PHY_ANAR_10BTHALF 0x0020 +#define PHY_ANAR_PROTO4 0x0010 +#define PHY_ANAR_PROTO3 0x0008 +#define PHY_ANAR_PROTO2 0x0004 +#define PHY_ANAR_PROTO1 0x0002 +#define PHY_ANAR_PROTO0 0x0001 + +/* + * These are the register definitions for the PHY (physical layer + * interface chip). + */ +/* + * PHY BMCR Basic Mode Control Register + */ +#define PHY_BMCR_RESET 0x8000 +#define PHY_BMCR_LOOPBK 0x4000 +#define PHY_BMCR_SPEEDSEL 0x2000 +#define PHY_BMCR_AUTONEGENBL 0x1000 +#define PHY_BMCR_RSVD0 0x0800 /* write as zero */ +#define PHY_BMCR_ISOLATE 0x0400 +#define PHY_BMCR_AUTONEGRSTR 0x0200 +#define PHY_BMCR_DUPLEX 0x0100 +#define PHY_BMCR_COLLTEST 0x0080 +#define PHY_BMCR_RSVD1 0x0040 /* write as zero, don't care */ +#define PHY_BMCR_RSVD2 0x0020 /* write as zero, don't care */ +#define PHY_BMCR_RSVD3 0x0010 /* write as zero, don't care */ +#define PHY_BMCR_RSVD4 0x0008 /* write as zero, don't care */ +#define PHY_BMCR_RSVD5 0x0004 /* write as zero, don't care */ +#define PHY_BMCR_RSVD6 0x0002 /* write as zero, don't care */ +#define PHY_BMCR_RSVD7 0x0001 /* write as zero, don't care */ +/* + * RESET: 1 == software reset, 0 == normal operation + * Resets status and control registers to default values. + * Relatches all hardware config values. + * + * LOOPBK: 1 == loopback operation enabled, 0 == normal operation + * + * SPEEDSEL: 1 == 100Mb/s, 0 == 10Mb/s + * Link speed is selected byt his bit or if auto-negotiation if bit + * 12 (AUTONEGENBL) is set (in which case the value of this register + * is ignored). + * + * AUTONEGENBL: 1 == Autonegotiation enabled, 0 == Autonegotiation disabled + * Bits 8 and 13 are ignored when autoneg is set, otherwise bits 8 and 13 + * determine speed and mode. Should be cleared and then set if PHY configured + * for no autoneg on startup. + * + * ISOLATE: 1 == isolate PHY from MII, 0 == normal operation + * + * AUTONEGRSTR: 1 == restart autonegotiation, 0 = normal operation + * + * DUPLEX: 1 == full duplex mode, 0 == half duplex mode + * + * COLLTEST: 1 == collision test enabled, 0 == normal operation + */ + +/* + * PHY, BMSR Basic Mode Status Register + */ +#define PHY_BMSR_100BT4 0x8000 +#define PHY_BMSR_100BTXFULL 0x4000 +#define PHY_BMSR_100BTXHALF 0x2000 +#define PHY_BMSR_10BTFULL 0x1000 +#define PHY_BMSR_10BTHALF 0x0800 +#define PHY_BMSR_RSVD1 0x0400 /* write as zero, don't care */ +#define PHY_BMSR_RSVD2 0x0200 /* write as zero, don't care */ +#define PHY_BMSR_RSVD3 0x0100 /* write as zero, don't care */ +#define PHY_BMSR_RSVD4 0x0080 /* write as zero, don't care */ +#define PHY_BMSR_MFPRESUP 0x0040 +#define PHY_BMSR_AUTONEGCOMP 0x0020 +#define PHY_BMSR_REMFAULT 0x0010 +#define PHY_BMSR_CANAUTONEG 0x0008 +#define PHY_BMSR_LINKSTAT 0x0004 +#define PHY_BMSR_JABBER 0x0002 +#define PHY_BMSR_EXTENDED 0x0001 |