/* * Copyright (c) 1997, 1998, 1999 * Bill Paul . All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. * * $FreeBSD: src/sys/pci/if_dc.c,v 1.9.2.45 2003/06/08 14:31:53 mux Exp $ * $DragonFly: src/sys/dev/netif/dc/if_dc.c,v 1.33 2005/06/13 22:10:56 joerg Exp $ */ /* * DEC "tulip" clone ethernet driver. Supports the DEC/Intel 21143 * series chips and several workalikes including the following: * * Macronix 98713/98715/98725/98727/98732 PMAC (www.macronix.com) * Macronix/Lite-On 82c115 PNIC II (www.macronix.com) * Lite-On 82c168/82c169 PNIC (www.litecom.com) * ASIX Electronics AX88140A (www.asix.com.tw) * ASIX Electronics AX88141 (www.asix.com.tw) * ADMtek AL981 (www.admtek.com.tw) * ADMtek AN985 (www.admtek.com.tw) * Davicom DM9100, DM9102, DM9102A (www.davicom8.com) * Accton EN1217 (www.accton.com) * Conexant LANfinity (www.conexant.com) * * Datasheets for the 21143 are available at developer.intel.com. * Datasheets for the clone parts can be found at their respective sites. * (Except for the PNIC; see www.freebsd.org/~wpaul/PNIC/pnic.ps.gz.) * The PNIC II is essentially a Macronix 98715A chip; the only difference * worth noting is that its multicast hash table is only 128 bits wide * instead of 512. * * Written by Bill Paul * Electrical Engineering Department * Columbia University, New York City */ /* * The Intel 21143 is the successor to the DEC 21140. It is basically * the same as the 21140 but with a few new features. The 21143 supports * three kinds of media attachments: * * o MII port, for 10Mbps and 100Mbps support and NWAY * autonegotiation provided by an external PHY. * o SYM port, for symbol mode 100Mbps support. * o 10baseT port. * o AUI/BNC port. * * The 100Mbps SYM port and 10baseT port can be used together in * combination with the internal NWAY support to create a 10/100 * autosensing configuration. * * Note that not all tulip workalikes are handled in this driver: we only * deal with those which are relatively well behaved. The Winbond is * handled separately due to its different register offsets and the * special handling needed for its various bugs. The PNIC is handled * here, but I'm not thrilled about it. * * All of the workalike chips use some form of MII transceiver support * with the exception of the Macronix chips, which also have a SYM port. * The ASIX AX88140A is also documented to have a SYM port, but all * the cards I've seen use an MII transceiver, probably because the * AX88140A doesn't support internal NWAY. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* for vtophys */ #include /* for vtophys */ #include #include #include #include #include #include #include "../mii_layer/mii.h" #include "../mii_layer/miivar.h" #include #include #define DC_USEIOSPACE #include "if_dcreg.h" /* "controller miibus0" required. See GENERIC if you get errors here. */ #include "miibus_if.h" /* * Various supported device vendors/types and their names. */ static struct dc_type dc_devs[] = { { DC_VENDORID_DEC, DC_DEVICEID_21143, "Intel 21143 10/100BaseTX" }, { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9009, "Davicom DM9009 10/100BaseTX" }, { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9100, "Davicom DM9100 10/100BaseTX" }, { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102, "Davicom DM9102 10/100BaseTX" }, { DC_VENDORID_DAVICOM, DC_DEVICEID_DM9102, "Davicom DM9102A 10/100BaseTX" }, { DC_VENDORID_ADMTEK, DC_DEVICEID_AL981, "ADMtek AL981 10/100BaseTX" }, { DC_VENDORID_ADMTEK, DC_DEVICEID_AN985, "ADMtek AN985 10/100BaseTX" }, { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A, "ASIX AX88140A 10/100BaseTX" }, { DC_VENDORID_ASIX, DC_DEVICEID_AX88140A, "ASIX AX88141 10/100BaseTX" }, { DC_VENDORID_MX, DC_DEVICEID_98713, "Macronix 98713 10/100BaseTX" }, { DC_VENDORID_MX, DC_DEVICEID_98713, "Macronix 98713A 10/100BaseTX" }, { DC_VENDORID_CP, DC_DEVICEID_98713_CP, "Compex RL100-TX 10/100BaseTX" }, { DC_VENDORID_CP, DC_DEVICEID_98713_CP, "Compex RL100-TX 10/100BaseTX" }, { DC_VENDORID_MX, DC_DEVICEID_987x5, "Macronix 98715/98715A 10/100BaseTX" }, { DC_VENDORID_MX, DC_DEVICEID_987x5, "Macronix 98715AEC-C 10/100BaseTX" }, { DC_VENDORID_MX, DC_DEVICEID_987x5, "Macronix 98725 10/100BaseTX" }, { DC_VENDORID_MX, DC_DEVICEID_98727, "Macronix 98727/98732 10/100BaseTX" }, { DC_VENDORID_LO, DC_DEVICEID_82C115, "LC82C115 PNIC II 10/100BaseTX" }, { DC_VENDORID_LO, DC_DEVICEID_82C168, "82c168 PNIC 10/100BaseTX" }, { DC_VENDORID_LO, DC_DEVICEID_82C168, "82c169 PNIC 10/100BaseTX" }, { DC_VENDORID_ACCTON, DC_DEVICEID_EN1217, "Accton EN1217 10/100BaseTX" }, { DC_VENDORID_ACCTON, DC_DEVICEID_EN2242, "Accton EN2242 MiniPCI 10/100BaseTX" }, { DC_VENDORID_CONEXANT, DC_DEVICEID_RS7112, "Conexant LANfinity MiniPCI 10/100BaseTX" }, { DC_VENDORID_3COM, DC_DEVICEID_3CSOHOB, "3Com OfficeConnect 10/100B" }, { 0, 0, NULL } }; static int dc_probe (device_t); static int dc_attach (device_t); static int dc_detach (device_t); static int dc_suspend (device_t); static int dc_resume (device_t); static void dc_acpi (device_t); static struct dc_type *dc_devtype (device_t); static int dc_newbuf (struct dc_softc *, int, struct mbuf *); static int dc_encap (struct dc_softc *, struct mbuf *, u_int32_t *); static void dc_pnic_rx_bug_war (struct dc_softc *, int); static int dc_rx_resync (struct dc_softc *); static void dc_rxeof (struct dc_softc *); static void dc_txeof (struct dc_softc *); static void dc_tick (void *); static void dc_tx_underrun (struct dc_softc *); static void dc_intr (void *); static void dc_start (struct ifnet *); static int dc_ioctl (struct ifnet *, u_long, caddr_t, struct ucred *); #ifdef DEVICE_POLLING static void dc_poll (struct ifnet *ifp, enum poll_cmd cmd, int count); #endif static void dc_init (void *); static void dc_stop (struct dc_softc *); static void dc_watchdog (struct ifnet *); static void dc_shutdown (device_t); static int dc_ifmedia_upd (struct ifnet *); static void dc_ifmedia_sts (struct ifnet *, struct ifmediareq *); static void dc_delay (struct dc_softc *); static void dc_eeprom_idle (struct dc_softc *); static void dc_eeprom_putbyte (struct dc_softc *, int); static void dc_eeprom_getword (struct dc_softc *, int, u_int16_t *); static void dc_eeprom_getword_pnic (struct dc_softc *, int, u_int16_t *); static void dc_eeprom_width (struct dc_softc *); static void dc_read_eeprom (struct dc_softc *, caddr_t, int, int, int); static void dc_mii_writebit (struct dc_softc *, int); static int dc_mii_readbit (struct dc_softc *); static void dc_mii_sync (struct dc_softc *); static void dc_mii_send (struct dc_softc *, u_int32_t, int); static int dc_mii_readreg (struct dc_softc *, struct dc_mii_frame *); static int dc_mii_writereg (struct dc_softc *, struct dc_mii_frame *); static int dc_miibus_readreg (device_t, int, int); static int dc_miibus_writereg (device_t, int, int, int); static void dc_miibus_statchg (device_t); static void dc_miibus_mediainit (device_t); static u_int32_t dc_crc_mask (struct dc_softc *); static void dc_setcfg (struct dc_softc *, int); static void dc_setfilt_21143 (struct dc_softc *); static void dc_setfilt_asix (struct dc_softc *); static void dc_setfilt_admtek (struct dc_softc *); static void dc_setfilt (struct dc_softc *); static void dc_reset (struct dc_softc *); static int dc_list_rx_init (struct dc_softc *); static int dc_list_tx_init (struct dc_softc *); static void dc_read_srom (struct dc_softc *, int); static void dc_parse_21143_srom (struct dc_softc *); static void dc_decode_leaf_sia (struct dc_softc *, struct dc_eblock_sia *); static void dc_decode_leaf_mii (struct dc_softc *, struct dc_eblock_mii *); static void dc_decode_leaf_sym (struct dc_softc *, struct dc_eblock_sym *); static void dc_apply_fixup (struct dc_softc *, int); #ifdef DC_USEIOSPACE #define DC_RES SYS_RES_IOPORT #define DC_RID DC_PCI_CFBIO #else #define DC_RES SYS_RES_MEMORY #define DC_RID DC_PCI_CFBMA #endif static device_method_t dc_methods[] = { /* Device interface */ DEVMETHOD(device_probe, dc_probe), DEVMETHOD(device_attach, dc_attach), DEVMETHOD(device_detach, dc_detach), DEVMETHOD(device_suspend, dc_suspend), DEVMETHOD(device_resume, dc_resume), DEVMETHOD(device_shutdown, dc_shutdown), /* bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_driver_added, bus_generic_driver_added), /* MII interface */ DEVMETHOD(miibus_readreg, dc_miibus_readreg), DEVMETHOD(miibus_writereg, dc_miibus_writereg), DEVMETHOD(miibus_statchg, dc_miibus_statchg), DEVMETHOD(miibus_mediainit, dc_miibus_mediainit), { 0, 0 } }; static driver_t dc_driver = { "dc", dc_methods, sizeof(struct dc_softc) }; static devclass_t dc_devclass; #ifdef __i386__ static int dc_quick=1; SYSCTL_INT(_hw, OID_AUTO, dc_quick, CTLFLAG_RW, &dc_quick,0,"do not mdevget in dc driver"); #endif DECLARE_DUMMY_MODULE(if_dc); DRIVER_MODULE(if_dc, pci, dc_driver, dc_devclass, 0, 0); DRIVER_MODULE(miibus, dc, miibus_driver, miibus_devclass, 0, 0); #define DC_SETBIT(sc, reg, x) \ CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) | (x)) #define DC_CLRBIT(sc, reg, x) \ CSR_WRITE_4(sc, reg, CSR_READ_4(sc, reg) & ~(x)) #define SIO_SET(x) DC_SETBIT(sc, DC_SIO, (x)) #define SIO_CLR(x) DC_CLRBIT(sc, DC_SIO, (x)) static void dc_delay(sc) struct dc_softc *sc; { int idx; for (idx = (300 / 33) + 1; idx > 0; idx--) CSR_READ_4(sc, DC_BUSCTL); } static void dc_eeprom_width(sc) struct dc_softc *sc; { int i; /* Force EEPROM to idle state. */ dc_eeprom_idle(sc); /* Enter EEPROM access mode. */ CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); dc_delay(sc); DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); dc_delay(sc); for (i = 3; i--;) { if (6 & (1 << i)) DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); else DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); } for (i = 1; i <= 12; i++) { DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); if (!(CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT)) { DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); break; } DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); } /* Turn off EEPROM access mode. */ dc_eeprom_idle(sc); if (i < 4 || i > 12) sc->dc_romwidth = 6; else sc->dc_romwidth = i; /* Enter EEPROM access mode. */ CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); dc_delay(sc); DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); dc_delay(sc); /* Turn off EEPROM access mode. */ dc_eeprom_idle(sc); } static void dc_eeprom_idle(sc) struct dc_softc *sc; { int i; CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); dc_delay(sc); DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); dc_delay(sc); for (i = 0; i < 25; i++) { DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); } DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CS); dc_delay(sc); CSR_WRITE_4(sc, DC_SIO, 0x00000000); return; } /* * Send a read command and address to the EEPROM, check for ACK. */ static void dc_eeprom_putbyte(sc, addr) struct dc_softc *sc; int addr; { int d, i; d = DC_EECMD_READ >> 6; for (i = 3; i--; ) { if (d & (1 << i)) DC_SETBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); else DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_DATAIN); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); } /* * Feed in each bit and strobe the clock. */ for (i = sc->dc_romwidth; i--;) { if (addr & (1 << i)) { SIO_SET(DC_SIO_EE_DATAIN); } else { SIO_CLR(DC_SIO_EE_DATAIN); } dc_delay(sc); SIO_SET(DC_SIO_EE_CLK); dc_delay(sc); SIO_CLR(DC_SIO_EE_CLK); dc_delay(sc); } return; } /* * Read a word of data stored in the EEPROM at address 'addr.' * The PNIC 82c168/82c169 has its own non-standard way to read * the EEPROM. */ static void dc_eeprom_getword_pnic(sc, addr, dest) struct dc_softc *sc; int addr; u_int16_t *dest; { int i; u_int32_t r; CSR_WRITE_4(sc, DC_PN_SIOCTL, DC_PN_EEOPCODE_READ|addr); for (i = 0; i < DC_TIMEOUT; i++) { DELAY(1); r = CSR_READ_4(sc, DC_SIO); if (!(r & DC_PN_SIOCTL_BUSY)) { *dest = (u_int16_t)(r & 0xFFFF); return; } } return; } /* * Read a word of data stored in the EEPROM at address 'addr.' */ static void dc_eeprom_getword(sc, addr, dest) struct dc_softc *sc; int addr; u_int16_t *dest; { int i; u_int16_t word = 0; /* Force EEPROM to idle state. */ dc_eeprom_idle(sc); /* Enter EEPROM access mode. */ CSR_WRITE_4(sc, DC_SIO, DC_SIO_EESEL); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_ROMCTL_READ); dc_delay(sc); DC_CLRBIT(sc, DC_SIO, DC_SIO_EE_CLK); dc_delay(sc); DC_SETBIT(sc, DC_SIO, DC_SIO_EE_CS); dc_delay(sc); /* * Send address of word we want to read. */ dc_eeprom_putbyte(sc, addr); /* * Start reading bits from EEPROM. */ for (i = 0x8000; i; i >>= 1) { SIO_SET(DC_SIO_EE_CLK); dc_delay(sc); if (CSR_READ_4(sc, DC_SIO) & DC_SIO_EE_DATAOUT) word |= i; dc_delay(sc); SIO_CLR(DC_SIO_EE_CLK); dc_delay(sc); } /* Turn off EEPROM access mode. */ dc_eeprom_idle(sc); *dest = word; return; } /* * Read a sequence of words from the EEPROM. */ static void dc_read_eeprom(sc, dest, off, cnt, swap) struct dc_softc *sc; caddr_t dest; int off; int cnt; int swap; { int i; u_int16_t word = 0, *ptr; for (i = 0; i < cnt; i++) { if (DC_IS_PNIC(sc)) dc_eeprom_getword_pnic(sc, off + i, &word); else dc_eeprom_getword(sc, off + i, &word); ptr = (u_int16_t *)(dest + (i * 2)); if (swap) *ptr = ntohs(word); else *ptr = word; } return; } /* * The following two routines are taken from the Macronix 98713 * Application Notes pp.19-21. */ /* * Write a bit to the MII bus. */ static void dc_mii_writebit(sc, bit) struct dc_softc *sc; int bit; { if (bit) CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE|DC_SIO_MII_DATAOUT); else CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); return; } /* * Read a bit from the MII bus. */ static int dc_mii_readbit(sc) struct dc_softc *sc; { CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_READ|DC_SIO_MII_DIR); CSR_READ_4(sc, DC_SIO); DC_SETBIT(sc, DC_SIO, DC_SIO_MII_CLK); DC_CLRBIT(sc, DC_SIO, DC_SIO_MII_CLK); if (CSR_READ_4(sc, DC_SIO) & DC_SIO_MII_DATAIN) return(1); return(0); } /* * Sync the PHYs by setting data bit and strobing the clock 32 times. */ static void dc_mii_sync(sc) struct dc_softc *sc; { int i; CSR_WRITE_4(sc, DC_SIO, DC_SIO_ROMCTL_WRITE); for (i = 0; i < 32; i++) dc_mii_writebit(sc, 1); return; } /* * Clock a series of bits through the MII. */ static void dc_mii_send(sc, bits, cnt) struct dc_softc *sc; u_int32_t bits; int cnt; { int i; for (i = (0x1 << (cnt - 1)); i; i >>= 1) dc_mii_writebit(sc, bits & i); } /* * Read an PHY register through the MII. */ static int dc_mii_readreg(sc, frame) struct dc_softc *sc; struct dc_mii_frame *frame; { int ack, i; crit_enter(); /* * Set up frame for RX. */ frame->mii_stdelim = DC_MII_STARTDELIM; frame->mii_opcode = DC_MII_READOP; frame->mii_turnaround = 0; frame->mii_data = 0; /* * Sync the PHYs. */ dc_mii_sync(sc); /* * Send command/address info. */ dc_mii_send(sc, frame->mii_stdelim, 2); dc_mii_send(sc, frame->mii_opcode, 2); dc_mii_send(sc, frame->mii_phyaddr, 5); dc_mii_send(sc, frame->mii_regaddr, 5); #ifdef notdef /* Idle bit */ dc_mii_writebit(sc, 1); dc_mii_writebit(sc, 0); #endif /* Check for ack */ ack = dc_mii_readbit(sc); /* * 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++) { dc_mii_readbit(sc); } goto fail; } for (i = 0x8000; i; i >>= 1) { if (!ack) { if (dc_mii_readbit(sc)) frame->mii_data |= i; } } fail: dc_mii_writebit(sc, 0); dc_mii_writebit(sc, 0); crit_exit(); if (ack) return(1); return(0); } /* * Write to a PHY register through the MII. */ static int dc_mii_writereg(sc, frame) struct dc_softc *sc; struct dc_mii_frame *frame; { crit_enter(); /* * Set up frame for TX. */ frame->mii_stdelim = DC_MII_STARTDELIM; frame->mii_opcode = DC_MII_WRITEOP; frame->mii_turnaround = DC_MII_TURNAROUND; /* * Sync the PHYs. */ dc_mii_sync(sc); dc_mii_send(sc, frame->mii_stdelim, 2); dc_mii_send(sc, frame->mii_opcode, 2); dc_mii_send(sc, frame->mii_phyaddr, 5); dc_mii_send(sc, frame->mii_regaddr, 5); dc_mii_send(sc, frame->mii_turnaround, 2); dc_mii_send(sc, frame->mii_data, 16); /* Idle bit. */ dc_mii_writebit(sc, 0); dc_mii_writebit(sc, 0); crit_exit(); return(0); } static int dc_miibus_readreg(dev, phy, reg) device_t dev; int phy, reg; { struct dc_mii_frame frame; struct dc_softc *sc; int i, rval, phy_reg = 0; sc = device_get_softc(dev); bzero((char *)&frame, sizeof(frame)); /* * Note: both the AL981 and AN985 have internal PHYs, * however the AL981 provides direct access to the PHY * registers while the AN985 uses a serial MII interface. * The AN985's MII interface is also buggy in that you * can read from any MII address (0 to 31), but only address 1 * behaves normally. To deal with both cases, we pretend * that the PHY is at MII address 1. */ if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) return(0); /* * Note: the ukphy probes of the RS7112 report a PHY at * MII address 0 (possibly HomePNA?) and 1 (ethernet) * so we only respond to correct one. */ if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR) return(0); if (sc->dc_pmode != DC_PMODE_MII) { if (phy == (MII_NPHY - 1)) { switch(reg) { case MII_BMSR: /* * Fake something to make the probe * code think there's a PHY here. */ return(BMSR_MEDIAMASK); break; case MII_PHYIDR1: if (DC_IS_PNIC(sc)) return(DC_VENDORID_LO); return(DC_VENDORID_DEC); break; case MII_PHYIDR2: if (DC_IS_PNIC(sc)) return(DC_DEVICEID_82C168); return(DC_DEVICEID_21143); break; default: return(0); break; } } else return(0); } if (DC_IS_PNIC(sc)) { CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_READ | (phy << 23) | (reg << 18)); for (i = 0; i < DC_TIMEOUT; i++) { DELAY(1); rval = CSR_READ_4(sc, DC_PN_MII); if (!(rval & DC_PN_MII_BUSY)) { rval &= 0xFFFF; return(rval == 0xFFFF ? 0 : rval); } } return(0); } if (DC_IS_COMET(sc)) { switch(reg) { case MII_BMCR: phy_reg = DC_AL_BMCR; break; case MII_BMSR: phy_reg = DC_AL_BMSR; break; case MII_PHYIDR1: phy_reg = DC_AL_VENID; break; case MII_PHYIDR2: phy_reg = DC_AL_DEVID; break; case MII_ANAR: phy_reg = DC_AL_ANAR; break; case MII_ANLPAR: phy_reg = DC_AL_LPAR; break; case MII_ANER: phy_reg = DC_AL_ANER; break; default: if_printf(&sc->arpcom.ac_if, "phy_read: bad phy register %x\n", reg); return(0); break; } rval = CSR_READ_4(sc, phy_reg) & 0x0000FFFF; if (rval == 0xFFFF) return(0); return(rval); } frame.mii_phyaddr = phy; frame.mii_regaddr = reg; if (sc->dc_type == DC_TYPE_98713) { phy_reg = CSR_READ_4(sc, DC_NETCFG); CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); } dc_mii_readreg(sc, &frame); if (sc->dc_type == DC_TYPE_98713) CSR_WRITE_4(sc, DC_NETCFG, phy_reg); return(frame.mii_data); } static int dc_miibus_writereg(dev, phy, reg, data) device_t dev; int phy, reg, data; { struct dc_softc *sc; struct dc_mii_frame frame; int i, phy_reg = 0; sc = device_get_softc(dev); bzero((char *)&frame, sizeof(frame)); if (DC_IS_ADMTEK(sc) && phy != DC_ADMTEK_PHYADDR) return(0); if (DC_IS_CONEXANT(sc) && phy != DC_CONEXANT_PHYADDR) return(0); if (DC_IS_PNIC(sc)) { CSR_WRITE_4(sc, DC_PN_MII, DC_PN_MIIOPCODE_WRITE | (phy << 23) | (reg << 10) | data); for (i = 0; i < DC_TIMEOUT; i++) { if (!(CSR_READ_4(sc, DC_PN_MII) & DC_PN_MII_BUSY)) break; } return(0); } if (DC_IS_COMET(sc)) { switch(reg) { case MII_BMCR: phy_reg = DC_AL_BMCR; break; case MII_BMSR: phy_reg = DC_AL_BMSR; break; case MII_PHYIDR1: phy_reg = DC_AL_VENID; break; case MII_PHYIDR2: phy_reg = DC_AL_DEVID; break; case MII_ANAR: phy_reg = DC_AL_ANAR; break; case MII_ANLPAR: phy_reg = DC_AL_LPAR; break; case MII_ANER: phy_reg = DC_AL_ANER; break; default: if_printf(&sc->arpcom.ac_if, "phy_write: bad phy register %x\n", reg); return(0); break; } CSR_WRITE_4(sc, phy_reg, data); return(0); } frame.mii_phyaddr = phy; frame.mii_regaddr = reg; frame.mii_data = data; if (sc->dc_type == DC_TYPE_98713) { phy_reg = CSR_READ_4(sc, DC_NETCFG); CSR_WRITE_4(sc, DC_NETCFG, phy_reg & ~DC_NETCFG_PORTSEL); } dc_mii_writereg(sc, &frame); if (sc->dc_type == DC_TYPE_98713) CSR_WRITE_4(sc, DC_NETCFG, phy_reg); return(0); } static void dc_miibus_statchg(dev) device_t dev; { struct dc_softc *sc; struct mii_data *mii; struct ifmedia *ifm; sc = device_get_softc(dev); if (DC_IS_ADMTEK(sc)) return; mii = device_get_softc(sc->dc_miibus); ifm = &mii->mii_media; if (DC_IS_DAVICOM(sc) && IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) { dc_setcfg(sc, ifm->ifm_media); sc->dc_if_media = ifm->ifm_media; } else { dc_setcfg(sc, mii->mii_media_active); sc->dc_if_media = mii->mii_media_active; } return; } /* * Special support for DM9102A cards with HomePNA PHYs. Note: * with the Davicom DM9102A/DM9801 eval board that I have, it seems * to be impossible to talk to the management interface of the DM9801 * PHY (its MDIO pin is not connected to anything). Consequently, * the driver has to just 'know' about the additional mode and deal * with it itself. *sigh* */ static void dc_miibus_mediainit(dev) device_t dev; { struct dc_softc *sc; struct mii_data *mii; struct ifmedia *ifm; int rev; rev = pci_get_revid(dev); sc = device_get_softc(dev); mii = device_get_softc(sc->dc_miibus); ifm = &mii->mii_media; if (DC_IS_DAVICOM(sc) && rev >= DC_REVISION_DM9102A) ifmedia_add(ifm, IFM_ETHER | IFM_HPNA_1, 0, NULL); return; } #define DC_BITS_512 9 #define DC_BITS_128 7 #define DC_BITS_64 6 static u_int32_t dc_crc_mask(struct dc_softc *sc) { /* * The hash table on the PNIC II and the MX98715AEC-C/D/E * chips is only 128 bits wide. */ if (sc->dc_flags & DC_128BIT_HASH) return ((1 << DC_BITS_128) - 1); /* The hash table on the MX98715BEC is only 64 bits wide. */ if (sc->dc_flags & DC_64BIT_HASH) return ((1 << DC_BITS_64) - 1); return ((1 << DC_BITS_512) - 1); } /* * 21143-style RX filter setup routine. Filter programming is done by * downloading a special setup frame into the TX engine. 21143, Macronix, * PNIC, PNIC II and Davicom chips are programmed this way. * * We always program the chip using 'hash perfect' mode, i.e. one perfect * address (our node address) and a 512-bit hash filter for multicast * frames. We also sneak the broadcast address into the hash filter since * we need that too. */ void dc_setfilt_21143(sc) struct dc_softc *sc; { struct dc_desc *sframe; u_int32_t h, crc_mask, *sp; struct ifmultiaddr *ifma; struct ifnet *ifp; int i; ifp = &sc->arpcom.ac_if; i = sc->dc_cdata.dc_tx_prod; DC_INC(sc->dc_cdata.dc_tx_prod, DC_TX_LIST_CNT); sc->dc_cdata.dc_tx_cnt++; sframe = &sc->dc_ldata->dc_tx_list[i]; sp = (u_int32_t *)&sc->dc_cdata.dc_sbuf; bzero((char *)sp, DC_SFRAME_LEN); sframe->dc_data = vtophys(&sc->dc_cdata.dc_sbuf); sframe->dc_ctl = DC_SFRAME_LEN | DC_TXCTL_SETUP | DC_TXCTL_TLINK | DC_FILTER_HASHPERF | DC_TXCTL_FINT; sc->dc_cdata.dc_tx_chain[i] = (struct mbuf *)&sc->dc_cdata.dc_sbuf; /* If we want promiscuous mode, set the allframes bit. */ if (ifp->if_flags & IFF_PROMISC) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); else DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); if (ifp->if_flags & IFF_ALLMULTI) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); else DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); crc_mask = dc_crc_mask(sc); 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 = ether_crc32_le( LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETHER_ADDR_LEN) & crc_mask; sp[h >> 4] |= 1 << (h & 0xF); } if (ifp->if_flags & IFF_BROADCAST) { h = ether_crc32_le(ifp->if_broadcastaddr, ETHER_ADDR_LEN) & crc_mask; sp[h >> 4] |= 1 << (h & 0xF); } /* Set our MAC address */ sp[39] = ((u_int16_t *)sc->arpcom.ac_enaddr)[0]; sp[40] = ((u_int16_t *)sc->arpcom.ac_enaddr)[1]; sp[41] = ((u_int16_t *)sc->arpcom.ac_enaddr)[2]; sframe->dc_status = DC_TXSTAT_OWN; CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); /* * The PNIC takes an exceedingly long time to process its * setup frame; wait 10ms after posting the setup frame * before proceeding, just so it has time to swallow its * medicine. */ DELAY(10000); ifp->if_timer = 5; return; } void dc_setfilt_admtek(sc) struct dc_softc *sc; { struct ifnet *ifp; int h = 0; u_int32_t crc_mask; u_int32_t hashes[2] = { 0, 0 }; struct ifmultiaddr *ifma; ifp = &sc->arpcom.ac_if; /* Init our MAC address */ CSR_WRITE_4(sc, DC_AL_PAR0, *(u_int32_t *)(&sc->arpcom.ac_enaddr[0])); CSR_WRITE_4(sc, DC_AL_PAR1, *(u_int32_t *)(&sc->arpcom.ac_enaddr[4])); /* If we want promiscuous mode, set the allframes bit. */ if (ifp->if_flags & IFF_PROMISC) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); else DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); if (ifp->if_flags & IFF_ALLMULTI) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); else DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); /* first, zot all the existing hash bits */ CSR_WRITE_4(sc, DC_AL_MAR0, 0); CSR_WRITE_4(sc, DC_AL_MAR1, 0); /* * If we're already in promisc or allmulti mode, we * don't have to bother programming the multicast filter. */ if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI)) return; /* now program new ones */ if (DC_IS_CENTAUR(sc)) crc_mask = dc_crc_mask(sc); else crc_mask = 0x3f; for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL; ifma = ifma->ifma_link.le_next) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; if (DC_IS_CENTAUR(sc)) { h = ether_crc32_le( LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETHER_ADDR_LEN) & crc_mask; } else { h = ether_crc32_be( LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETHER_ADDR_LEN); h = (h >> 26) & crc_mask; } if (h < 32) hashes[0] |= (1 << h); else hashes[1] |= (1 << (h - 32)); } CSR_WRITE_4(sc, DC_AL_MAR0, hashes[0]); CSR_WRITE_4(sc, DC_AL_MAR1, hashes[1]); return; } void dc_setfilt_asix(sc) struct dc_softc *sc; { struct ifnet *ifp; int h = 0; u_int32_t hashes[2] = { 0, 0 }; struct ifmultiaddr *ifma; ifp = &sc->arpcom.ac_if; /* Init our MAC address */ CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR0); CSR_WRITE_4(sc, DC_AX_FILTDATA, *(u_int32_t *)(&sc->arpcom.ac_enaddr[0])); CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_PAR1); CSR_WRITE_4(sc, DC_AX_FILTDATA, *(u_int32_t *)(&sc->arpcom.ac_enaddr[4])); /* If we want promiscuous mode, set the allframes bit. */ if (ifp->if_flags & IFF_PROMISC) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); else DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_PROMISC); if (ifp->if_flags & IFF_ALLMULTI) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); else DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_RX_ALLMULTI); /* * The ASIX chip has a special bit to enable reception * of broadcast frames. */ if (ifp->if_flags & IFF_BROADCAST) DC_SETBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); else DC_CLRBIT(sc, DC_NETCFG, DC_AX_NETCFG_RX_BROAD); /* first, zot all the existing hash bits */ CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); CSR_WRITE_4(sc, DC_AX_FILTDATA, 0); /* * If we're already in promisc or allmulti mode, we * don't have to bother programming the multicast filter. */ if (ifp->if_flags & (IFF_PROMISC|IFF_ALLMULTI)) return; /* 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 = ether_crc32_be( LLADDR((struct sockaddr_dl *)ifma->ifma_addr), ETHER_ADDR_LEN); h = (h >> 26) & 0x3f; if (h < 32) hashes[0] |= (1 << h); else hashes[1] |= (1 << (h - 32)); } CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR0); CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[0]); CSR_WRITE_4(sc, DC_AX_FILTIDX, DC_AX_FILTIDX_MAR1); CSR_WRITE_4(sc, DC_AX_FILTDATA, hashes[1]); return; } static void dc_setfilt(sc) struct dc_softc *sc; { if (DC_IS_INTEL(sc) || DC_IS_MACRONIX(sc) || DC_IS_PNIC(sc) || DC_IS_PNICII(sc) || DC_IS_DAVICOM(sc) || DC_IS_CONEXANT(sc)) dc_setfilt_21143(sc); if (DC_IS_ASIX(sc)) dc_setfilt_asix(sc); if (DC_IS_ADMTEK(sc)) dc_setfilt_admtek(sc); 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 dc_setcfg(sc, media) struct dc_softc *sc; int media; { int i, restart = 0; u_int32_t isr; if (IFM_SUBTYPE(media) == IFM_NONE) return; if (CSR_READ_4(sc, DC_NETCFG) & (DC_NETCFG_TX_ON|DC_NETCFG_RX_ON)) { restart = 1; DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_TX_ON|DC_NETCFG_RX_ON)); for (i = 0; i < DC_TIMEOUT; i++) { isr = CSR_READ_4(sc, DC_ISR); if (isr & DC_ISR_TX_IDLE || (isr & DC_ISR_RX_STATE) == DC_RXSTATE_STOPPED) break; DELAY(10); } if (i == DC_TIMEOUT) { if_printf(&sc->arpcom.ac_if, "failed to force tx and rx to idle state\n"); } } if (IFM_SUBTYPE(media) == IFM_100_TX) { DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); if (sc->dc_pmode == DC_PMODE_MII) { int watchdogreg; if (DC_IS_INTEL(sc)) { /* there's a write enable bit here that reads as 1 */ watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); watchdogreg &= ~DC_WDOG_CTLWREN; watchdogreg |= DC_WDOG_JABBERDIS; CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); } else { DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); } DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS| DC_NETCFG_PORTSEL|DC_NETCFG_SCRAMBLER)); if (sc->dc_type == DC_TYPE_98713) DC_SETBIT(sc, DC_NETCFG, (DC_NETCFG_PCS| DC_NETCFG_SCRAMBLER)); if (!DC_IS_DAVICOM(sc)) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); if (DC_IS_INTEL(sc)) dc_apply_fixup(sc, IFM_AUTO); } else { if (DC_IS_PNIC(sc)) { DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_SPEEDSEL); DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); } DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); if (DC_IS_INTEL(sc)) dc_apply_fixup(sc, (media & IFM_GMASK) == IFM_FDX ? IFM_100_TX|IFM_FDX : IFM_100_TX); } } if (IFM_SUBTYPE(media) == IFM_10_T) { DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_SPEEDSEL); DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_HEARTBEAT); if (sc->dc_pmode == DC_PMODE_MII) { int watchdogreg; /* there's a write enable bit here that reads as 1 */ if (DC_IS_INTEL(sc)) { watchdogreg = CSR_READ_4(sc, DC_WATCHDOG); watchdogreg &= ~DC_WDOG_CTLWREN; watchdogreg |= DC_WDOG_JABBERDIS; CSR_WRITE_4(sc, DC_WATCHDOG, watchdogreg); } else { DC_SETBIT(sc, DC_WATCHDOG, DC_WDOG_JABBERDIS); } DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_PCS| DC_NETCFG_PORTSEL|DC_NETCFG_SCRAMBLER)); if (sc->dc_type == DC_TYPE_98713) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PCS); if (!DC_IS_DAVICOM(sc)) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); if (DC_IS_INTEL(sc)) dc_apply_fixup(sc, IFM_AUTO); } else { if (DC_IS_PNIC(sc)) { DC_PN_GPIO_CLRBIT(sc, DC_PN_GPIO_SPEEDSEL); DC_PN_GPIO_SETBIT(sc, DC_PN_GPIO_100TX_LOOP); DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_SPEEDSEL); } DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PCS); DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_SCRAMBLER); if (DC_IS_INTEL(sc)) { DC_CLRBIT(sc, DC_SIARESET, DC_SIA_RESET); DC_CLRBIT(sc, DC_10BTCTRL, 0xFFFF); if ((media & IFM_GMASK) == IFM_FDX) DC_SETBIT(sc, DC_10BTCTRL, 0x7F3D); else DC_SETBIT(sc, DC_10BTCTRL, 0x7F3F); DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); DC_CLRBIT(sc, DC_10BTCTRL, DC_TCTL_AUTONEGENBL); dc_apply_fixup(sc, (media & IFM_GMASK) == IFM_FDX ? IFM_10_T|IFM_FDX : IFM_10_T); DELAY(20000); } } } /* * If this is a Davicom DM9102A card with a DM9801 HomePNA * PHY and we want HomePNA mode, set the portsel bit to turn * on the external MII port. */ if (DC_IS_DAVICOM(sc)) { if (IFM_SUBTYPE(media) == IFM_HPNA_1) { DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); sc->dc_link = 1; } else { DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_PORTSEL); } } if ((media & IFM_GMASK) == IFM_FDX) { DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) DC_SETBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); } else { DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_FULLDUPLEX); if (sc->dc_pmode == DC_PMODE_SYM && DC_IS_PNIC(sc)) DC_CLRBIT(sc, DC_PN_NWAY, DC_PN_NWAY_DUPLEX); } if (restart) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON|DC_NETCFG_RX_ON); return; } static void dc_reset(sc) struct dc_softc *sc; { int i; DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); for (i = 0; i < DC_TIMEOUT; i++) { DELAY(10); if (!(CSR_READ_4(sc, DC_BUSCTL) & DC_BUSCTL_RESET)) break; } if (DC_IS_ASIX(sc) || DC_IS_ADMTEK(sc) || DC_IS_CONEXANT(sc)) { DELAY(10000); DC_CLRBIT(sc, DC_BUSCTL, DC_BUSCTL_RESET); i = 0; } if (i == DC_TIMEOUT) if_printf(&sc->arpcom.ac_if, "reset never completed!\n"); /* Wait a little while for the chip to get its brains in order. */ DELAY(1000); CSR_WRITE_4(sc, DC_IMR, 0x00000000); CSR_WRITE_4(sc, DC_BUSCTL, 0x00000000); CSR_WRITE_4(sc, DC_NETCFG, 0x00000000); /* * Bring the SIA out of reset. In some cases, it looks * like failing to unreset the SIA soon enough gets it * into a state where it will never come out of reset * until we reset the whole chip again. */ if (DC_IS_INTEL(sc)) { DC_SETBIT(sc, DC_SIARESET, DC_SIA_RESET); CSR_WRITE_4(sc, DC_10BTCTRL, 0); CSR_WRITE_4(sc, DC_WATCHDOG, 0); } return; } static struct dc_type *dc_devtype(dev) device_t dev; { struct dc_type *t; u_int32_t rev; t = dc_devs; while(t->dc_name != NULL) { if ((pci_get_vendor(dev) == t->dc_vid) && (pci_get_device(dev) == t->dc_did)) { /* Check the PCI revision */ rev = pci_get_revid(dev); if (t->dc_did == DC_DEVICEID_98713 && rev >= DC_REVISION_98713A) t++; if (t->dc_did == DC_DEVICEID_98713_CP && rev >= DC_REVISION_98713A) t++; if (t->dc_did == DC_DEVICEID_987x5 && rev >= DC_REVISION_98715AEC_C) t++; if (t->dc_did == DC_DEVICEID_987x5 && rev >= DC_REVISION_98725) t++; if (t->dc_did == DC_DEVICEID_AX88140A && rev >= DC_REVISION_88141) t++; if (t->dc_did == DC_DEVICEID_82C168 && rev >= DC_REVISION_82C169) t++; if (t->dc_did == DC_DEVICEID_DM9102 && rev >= DC_REVISION_DM9102A) t++; return(t); } t++; } return(NULL); } /* * Probe for a 21143 or clone chip. Check the PCI vendor and device * IDs against our list and return a device name if we find a match. * We do a little bit of extra work to identify the exact type of * chip. The MX98713 and MX98713A have the same PCI vendor/device ID, * but different revision IDs. The same is true for 98715/98715A * chips and the 98725, as well as the ASIX and ADMtek chips. In some * cases, the exact chip revision affects driver behavior. */ static int dc_probe(dev) device_t dev; { struct dc_type *t; t = dc_devtype(dev); if (t != NULL) { device_set_desc(dev, t->dc_name); return(0); } return(ENXIO); } static void dc_acpi(dev) device_t dev; { u_int32_t r, cptr; /* Find the location of the capabilities block */ cptr = pci_read_config(dev, DC_PCI_CCAP, 4) & 0xFF; r = pci_read_config(dev, cptr, 4) & 0xFF; if (r == 0x01) { r = pci_read_config(dev, cptr + 4, 4); if (r & DC_PSTATE_D3) { u_int32_t iobase, membase, irq; struct dc_softc *sc; /* Save important PCI config data. */ iobase = pci_read_config(dev, DC_PCI_CFBIO, 4); membase = pci_read_config(dev, DC_PCI_CFBMA, 4); irq = pci_read_config(dev, DC_PCI_CFIT, 4); sc = device_get_softc(dev); /* Reset the power state. */ if_printf(&sc->arpcom.ac_if, "chip is in D%d power mode " "-- setting to D0\n", r & DC_PSTATE_D3); r &= 0xFFFFFFFC; pci_write_config(dev, cptr + 4, r, 4); /* Restore PCI config data. */ pci_write_config(dev, DC_PCI_CFBIO, iobase, 4); pci_write_config(dev, DC_PCI_CFBMA, membase, 4); pci_write_config(dev, DC_PCI_CFIT, irq, 4); } } } static void dc_apply_fixup(sc, media) struct dc_softc *sc; int media; { struct dc_mediainfo *m; u_int8_t *p; int i; u_int32_t reg; m = sc->dc_mi; while (m != NULL) { if (m->dc_media == media) break; m = m->dc_next; } if (m == NULL) return; for (i = 0, p = m->dc_reset_ptr; i < m->dc_reset_len; i++, p += 2) { reg = (p[0] | (p[1] << 8)) << 16; CSR_WRITE_4(sc, DC_WATCHDOG, reg); } for (i = 0, p = m->dc_gp_ptr; i < m->dc_gp_len; i++, p += 2) { reg = (p[0] | (p[1] << 8)) << 16; CSR_WRITE_4(sc, DC_WATCHDOG, reg); } return; } static void dc_decode_leaf_sia(sc, l) struct dc_softc *sc; struct dc_eblock_sia *l; { struct dc_mediainfo *m; m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_INTWAIT | M_ZERO); if (l->dc_sia_code == DC_SIA_CODE_10BT) m->dc_media = IFM_10_T; if (l->dc_sia_code == DC_SIA_CODE_10BT_FDX) m->dc_media = IFM_10_T|IFM_FDX; if (l->dc_sia_code == DC_SIA_CODE_10B2) m->dc_media = IFM_10_2; if (l->dc_sia_code == DC_SIA_CODE_10B5) m->dc_media = IFM_10_5; m->dc_gp_len = 2; m->dc_gp_ptr = (u_int8_t *)&l->dc_sia_gpio_ctl; m->dc_next = sc->dc_mi; sc->dc_mi = m; sc->dc_pmode = DC_PMODE_SIA; return; } static void dc_decode_leaf_sym(sc, l) struct dc_softc *sc; struct dc_eblock_sym *l; { struct dc_mediainfo *m; m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_INTWAIT | M_ZERO); if (l->dc_sym_code == DC_SYM_CODE_100BT) m->dc_media = IFM_100_TX; if (l->dc_sym_code == DC_SYM_CODE_100BT_FDX) m->dc_media = IFM_100_TX|IFM_FDX; m->dc_gp_len = 2; m->dc_gp_ptr = (u_int8_t *)&l->dc_sym_gpio_ctl; m->dc_next = sc->dc_mi; sc->dc_mi = m; sc->dc_pmode = DC_PMODE_SYM; return; } static void dc_decode_leaf_mii(sc, l) struct dc_softc *sc; struct dc_eblock_mii *l; { u_int8_t *p; struct dc_mediainfo *m; m = malloc(sizeof(struct dc_mediainfo), M_DEVBUF, M_INTWAIT | M_ZERO); /* We abuse IFM_AUTO to represent MII. */ m->dc_media = IFM_AUTO; m->dc_gp_len = l->dc_gpr_len; p = (u_int8_t *)l; p += sizeof(struct dc_eblock_mii); m->dc_gp_ptr = p; p += 2 * l->dc_gpr_len; m->dc_reset_len = *p; p++; m->dc_reset_ptr = p; m->dc_next = sc->dc_mi; sc->dc_mi = m; return; } static void dc_read_srom(sc, bits) struct dc_softc *sc; int bits; { int size; size = 2 << bits; sc->dc_srom = malloc(size, M_DEVBUF, M_INTWAIT); dc_read_eeprom(sc, (caddr_t)sc->dc_srom, 0, (size / 2), 0); } static void dc_parse_21143_srom(sc) struct dc_softc *sc; { struct dc_leaf_hdr *lhdr; struct dc_eblock_hdr *hdr; int i, loff; char *ptr; int have_mii; have_mii = 0; loff = sc->dc_srom[27]; lhdr = (struct dc_leaf_hdr *)&(sc->dc_srom[loff]); ptr = (char *)lhdr; ptr += sizeof(struct dc_leaf_hdr) - 1; /* * Look if we got a MII media block. */ for (i = 0; i < lhdr->dc_mcnt; i++) { hdr = (struct dc_eblock_hdr *)ptr; if (hdr->dc_type == DC_EBLOCK_MII) have_mii++; ptr += (hdr->dc_len & 0x7F); ptr++; } /* * Do the same thing again. Only use SIA and SYM media * blocks if no MII media block is available. */ ptr = (char *)lhdr; ptr += sizeof(struct dc_leaf_hdr) - 1; for (i = 0; i < lhdr->dc_mcnt; i++) { hdr = (struct dc_eblock_hdr *)ptr; switch(hdr->dc_type) { case DC_EBLOCK_MII: dc_decode_leaf_mii(sc, (struct dc_eblock_mii *)hdr); break; case DC_EBLOCK_SIA: if (! have_mii) dc_decode_leaf_sia(sc, (struct dc_eblock_sia *)hdr); break; case DC_EBLOCK_SYM: if (! have_mii) dc_decode_leaf_sym(sc, (struct dc_eblock_sym *)hdr); break; default: /* Don't care. Yet. */ break; } ptr += (hdr->dc_len & 0x7F); ptr++; } return; } /* * Attach the interface. Allocate softc structures, do ifmedia * setup and ethernet/BPF attach. */ static int dc_attach(dev) device_t dev; { int tmp = 0; u_char eaddr[ETHER_ADDR_LEN]; u_int32_t command; struct dc_softc *sc; struct ifnet *ifp; u_int32_t revision; int error = 0, rid, mac_offset; sc = device_get_softc(dev); callout_init(&sc->dc_stat_timer); ifp = &sc->arpcom.ac_if; if_initname(ifp, device_get_name(dev), device_get_unit(dev)); /* * Handle power management nonsense. */ dc_acpi(dev); /* * Map control/status registers. */ pci_enable_busmaster(dev); pci_enable_io(dev, SYS_RES_IOPORT); pci_enable_io(dev, SYS_RES_MEMORY); command = pci_read_config(dev, PCIR_COMMAND, 4); #ifdef DC_USEIOSPACE if (!(command & PCIM_CMD_PORTEN)) { device_printf(dev, "failed to enable I/O ports!\n"); error = ENXIO; return(error); } #else if (!(command & PCIM_CMD_MEMEN)) { device_printf(dev, "failed to enable memory mapping!\n"); error = ENXIO; return(error); } #endif rid = DC_RID; sc->dc_res = bus_alloc_resource_any(dev, DC_RES, &rid, RF_ACTIVE); if (sc->dc_res == NULL) { device_printf(dev, "couldn't map ports/memory\n"); error = ENXIO; goto fail; } sc->dc_btag = rman_get_bustag(sc->dc_res); sc->dc_bhandle = rman_get_bushandle(sc->dc_res); /* Allocate interrupt */ rid = 0; sc->dc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); if (sc->dc_irq == NULL) { device_printf(dev, "couldn't map interrupt\n"); error = ENXIO; goto fail; } /* Need this info to decide on a chip type. */ sc->dc_info = dc_devtype(dev); revision = pci_get_revid(dev); /* Get the eeprom width, but PNIC has diff eeprom */ if (sc->dc_info->dc_did != DC_DEVICEID_82C168) dc_eeprom_width(sc); switch(sc->dc_info->dc_did) { case DC_DEVICEID_21143: sc->dc_type = DC_TYPE_21143; sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; sc->dc_flags |= DC_REDUCED_MII_POLL; /* Save EEPROM contents so we can parse them later. */ dc_read_srom(sc, sc->dc_romwidth); break; case DC_DEVICEID_DM9009: case DC_DEVICEID_DM9100: case DC_DEVICEID_DM9102: sc->dc_type = DC_TYPE_DM9102; sc->dc_flags |= DC_TX_COALESCE|DC_TX_INTR_ALWAYS; sc->dc_flags |= DC_REDUCED_MII_POLL|DC_TX_STORENFWD; sc->dc_pmode = DC_PMODE_MII; /* Increase the latency timer value. */ command = pci_read_config(dev, DC_PCI_CFLT, 4); command &= 0xFFFF00FF; command |= 0x00008000; pci_write_config(dev, DC_PCI_CFLT, command, 4); break; case DC_DEVICEID_AL981: sc->dc_type = DC_TYPE_AL981; sc->dc_flags |= DC_TX_USE_TX_INTR; sc->dc_flags |= DC_TX_ADMTEK_WAR; sc->dc_pmode = DC_PMODE_MII; dc_read_srom(sc, sc->dc_romwidth); break; case DC_DEVICEID_AN985: case DC_DEVICEID_EN2242: case DC_DEVICEID_3CSOHOB: sc->dc_type = DC_TYPE_AN985; sc->dc_flags |= DC_64BIT_HASH; sc->dc_flags |= DC_TX_USE_TX_INTR; sc->dc_flags |= DC_TX_ADMTEK_WAR; sc->dc_pmode = DC_PMODE_MII; dc_read_srom(sc, sc->dc_romwidth); break; case DC_DEVICEID_98713: case DC_DEVICEID_98713_CP: if (revision < DC_REVISION_98713A) { sc->dc_type = DC_TYPE_98713; } if (revision >= DC_REVISION_98713A) { sc->dc_type = DC_TYPE_98713A; sc->dc_flags |= DC_21143_NWAY; } sc->dc_flags |= DC_REDUCED_MII_POLL; sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; break; case DC_DEVICEID_987x5: case DC_DEVICEID_EN1217: /* * Macronix MX98715AEC-C/D/E parts have only a * 128-bit hash table. We need to deal with these * in the same manner as the PNIC II so that we * get the right number of bits out of the * CRC routine. */ if (revision >= DC_REVISION_98715AEC_C && revision < DC_REVISION_98725) sc->dc_flags |= DC_128BIT_HASH; sc->dc_type = DC_TYPE_987x5; sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY; break; case DC_DEVICEID_98727: sc->dc_type = DC_TYPE_987x5; sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR; sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY; break; case DC_DEVICEID_82C115: sc->dc_type = DC_TYPE_PNICII; sc->dc_flags |= DC_TX_POLL|DC_TX_USE_TX_INTR|DC_128BIT_HASH; sc->dc_flags |= DC_REDUCED_MII_POLL|DC_21143_NWAY; break; case DC_DEVICEID_82C168: sc->dc_type = DC_TYPE_PNIC; sc->dc_flags |= DC_TX_STORENFWD|DC_TX_INTR_ALWAYS; sc->dc_flags |= DC_PNIC_RX_BUG_WAR; sc->dc_pnic_rx_buf = malloc(DC_RXLEN * 5, M_DEVBUF, M_WAITOK); if (revision < DC_REVISION_82C169) sc->dc_pmode = DC_PMODE_SYM; break; case DC_DEVICEID_AX88140A: sc->dc_type = DC_TYPE_ASIX; sc->dc_flags |= DC_TX_USE_TX_INTR|DC_TX_INTR_FIRSTFRAG; sc->dc_flags |= DC_REDUCED_MII_POLL; sc->dc_pmode = DC_PMODE_MII; break; case DC_DEVICEID_RS7112: sc->dc_type = DC_TYPE_CONEXANT; sc->dc_flags |= DC_TX_INTR_ALWAYS; sc->dc_flags |= DC_REDUCED_MII_POLL; sc->dc_pmode = DC_PMODE_MII; dc_read_srom(sc, sc->dc_romwidth); break; default: device_printf(dev, "unknown device: %x\n", sc->dc_info->dc_did); break; } /* Save the cache line size. */ if (DC_IS_DAVICOM(sc)) sc->dc_cachesize = 0; else sc->dc_cachesize = pci_read_config(dev, DC_PCI_CFLT, 4) & 0xFF; /* Reset the adapter. */ dc_reset(sc); /* Take 21143 out of snooze mode */ if (DC_IS_INTEL(sc)) { command = pci_read_config(dev, DC_PCI_CFDD, 4); command &= ~(DC_CFDD_SNOOZE_MODE|DC_CFDD_SLEEP_MODE); pci_write_config(dev, DC_PCI_CFDD, command, 4); } /* * Try to learn something about the supported media. * We know that ASIX and ADMtek and Davicom devices * will *always* be using MII media, so that's a no-brainer. * The tricky ones are the Macronix/PNIC II and the * Intel 21143. */ if (DC_IS_INTEL(sc)) dc_parse_21143_srom(sc); else if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { if (sc->dc_type == DC_TYPE_98713) sc->dc_pmode = DC_PMODE_MII; else sc->dc_pmode = DC_PMODE_SYM; } else if (!sc->dc_pmode) sc->dc_pmode = DC_PMODE_MII; /* * Get station address from the EEPROM. */ switch(sc->dc_type) { case DC_TYPE_98713: case DC_TYPE_98713A: case DC_TYPE_987x5: case DC_TYPE_PNICII: dc_read_eeprom(sc, (caddr_t)&mac_offset, (DC_EE_NODEADDR_OFFSET / 2), 1, 0); dc_read_eeprom(sc, (caddr_t)&eaddr, (mac_offset / 2), 3, 0); break; case DC_TYPE_PNIC: dc_read_eeprom(sc, (caddr_t)&eaddr, 0, 3, 1); break; case DC_TYPE_DM9102: case DC_TYPE_21143: case DC_TYPE_ASIX: dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); break; case DC_TYPE_AL981: case DC_TYPE_AN985: bcopy(&sc->dc_srom[DC_AL_EE_NODEADDR], (caddr_t)&eaddr, ETHER_ADDR_LEN); dc_read_eeprom(sc, (caddr_t)&eaddr, DC_AL_EE_NODEADDR, 3, 0); break; case DC_TYPE_CONEXANT: bcopy(sc->dc_srom + DC_CONEXANT_EE_NODEADDR, &eaddr, 6); break; default: dc_read_eeprom(sc, (caddr_t)&eaddr, DC_EE_NODEADDR, 3, 0); break; } sc->dc_ldata = contigmalloc(sizeof(struct dc_list_data), M_DEVBUF, M_WAITOK, 0, 0xffffffff, PAGE_SIZE, 0); if (sc->dc_ldata == NULL) { device_printf(dev, "no memory for list buffers!\n"); error = ENXIO; goto fail; } bzero(sc->dc_ldata, sizeof(struct dc_list_data)); ifp->if_softc = sc; ifp->if_mtu = ETHERMTU; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = dc_ioctl; ifp->if_start = dc_start; #ifdef DEVICE_POLLING ifp->if_poll = dc_poll; #endif ifp->if_watchdog = dc_watchdog; ifp->if_init = dc_init; ifp->if_baudrate = 10000000; ifq_set_maxlen(&ifp->if_snd, DC_TX_LIST_CNT - 1); ifq_set_ready(&ifp->if_snd); /* * Do MII setup. If this is a 21143, check for a PHY on the * MII bus after applying any necessary fixups to twiddle the * GPIO bits. If we don't end up finding a PHY, restore the * old selection (SIA only or SIA/SYM) and attach the dcphy * driver instead. */ if (DC_IS_INTEL(sc)) { dc_apply_fixup(sc, IFM_AUTO); tmp = sc->dc_pmode; sc->dc_pmode = DC_PMODE_MII; } error = mii_phy_probe(dev, &sc->dc_miibus, dc_ifmedia_upd, dc_ifmedia_sts); if (error && DC_IS_INTEL(sc)) { sc->dc_pmode = tmp; if (sc->dc_pmode != DC_PMODE_SIA) sc->dc_pmode = DC_PMODE_SYM; sc->dc_flags |= DC_21143_NWAY; mii_phy_probe(dev, &sc->dc_miibus, dc_ifmedia_upd, dc_ifmedia_sts); /* * For non-MII cards, we need to have the 21143 * drive the LEDs. Except there are some systems * like the NEC VersaPro NoteBook PC which have no * LEDs, and twiddling these bits has adverse effects * on them. (I.e. you suddenly can't get a link.) */ if (pci_read_config(dev, DC_PCI_CSID, 4) != 0x80281033) sc->dc_flags |= DC_TULIP_LEDS; error = 0; } if (error) { device_printf(dev, "MII without any PHY!\n"); error = ENXIO; goto fail; } /* * Call MI attach routine. */ ether_ifattach(ifp, eaddr); if (DC_IS_ADMTEK(sc)) { /* * Set automatic TX underrun recovery for the ADMtek chips */ DC_SETBIT(sc, DC_AL_CR, DC_AL_CR_ATUR); } /* * Tell the upper layer(s) we support long frames. */ ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); error = bus_setup_intr(dev, sc->dc_irq, INTR_TYPE_NET, dc_intr, sc, &sc->dc_intrhand, NULL); if (error) { ether_ifdetach(ifp); device_printf(dev, "couldn't set up irq\n"); goto fail; } return(0); fail: dc_detach(dev); return(error); } static int dc_detach(dev) device_t dev; { struct dc_softc *sc = device_get_softc(dev); struct ifnet *ifp = &sc->arpcom.ac_if; struct dc_mediainfo *m; crit_enter(); if (device_is_attached(dev)) { dc_stop(sc); ether_ifdetach(ifp); } if (sc->dc_miibus) device_delete_child(dev, sc->dc_miibus); bus_generic_detach(dev); if (sc->dc_intrhand) bus_teardown_intr(dev, sc->dc_irq, sc->dc_intrhand); crit_exit(); if (sc->dc_irq) bus_release_resource(dev, SYS_RES_IRQ, 0, sc->dc_irq); if (sc->dc_res) bus_release_resource(dev, DC_RES, DC_RID, sc->dc_res); if (sc->dc_ldata) contigfree(sc->dc_ldata, sizeof(struct dc_list_data), M_DEVBUF); if (sc->dc_pnic_rx_buf != NULL) free(sc->dc_pnic_rx_buf, M_DEVBUF); while(sc->dc_mi != NULL) { m = sc->dc_mi->dc_next; free(sc->dc_mi, M_DEVBUF); sc->dc_mi = m; } if (sc->dc_srom) free(sc->dc_srom, M_DEVBUF); return(0); } /* * Initialize the transmit descriptors. */ static int dc_list_tx_init(sc) struct dc_softc *sc; { struct dc_chain_data *cd; struct dc_list_data *ld; int i; cd = &sc->dc_cdata; ld = sc->dc_ldata; for (i = 0; i < DC_TX_LIST_CNT; i++) { if (i == (DC_TX_LIST_CNT - 1)) { ld->dc_tx_list[i].dc_next = vtophys(&ld->dc_tx_list[0]); } else { ld->dc_tx_list[i].dc_next = vtophys(&ld->dc_tx_list[i + 1]); } cd->dc_tx_chain[i] = NULL; ld->dc_tx_list[i].dc_data = 0; ld->dc_tx_list[i].dc_ctl = 0; } cd->dc_tx_prod = cd->dc_tx_cons = cd->dc_tx_cnt = 0; 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 dc_list_rx_init(sc) struct dc_softc *sc; { struct dc_chain_data *cd; struct dc_list_data *ld; int i; cd = &sc->dc_cdata; ld = sc->dc_ldata; for (i = 0; i < DC_RX_LIST_CNT; i++) { if (dc_newbuf(sc, i, NULL) == ENOBUFS) return(ENOBUFS); if (i == (DC_RX_LIST_CNT - 1)) { ld->dc_rx_list[i].dc_next = vtophys(&ld->dc_rx_list[0]); } else { ld->dc_rx_list[i].dc_next = vtophys(&ld->dc_rx_list[i + 1]); } } cd->dc_rx_prod = 0; return(0); } /* * Initialize an RX descriptor and attach an MBUF cluster. */ static int dc_newbuf(sc, i, m) struct dc_softc *sc; int i; struct mbuf *m; { struct mbuf *m_new = NULL; struct dc_desc *c; c = &sc->dc_ldata->dc_rx_list[i]; if (m == NULL) { m_new = m_getcl(MB_DONTWAIT, MT_DATA, M_PKTHDR); if (m_new == NULL) return (ENOBUFS); m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; } else { m_new = m; m_new->m_len = m_new->m_pkthdr.len = MCLBYTES; m_new->m_data = m_new->m_ext.ext_buf; } m_adj(m_new, sizeof(u_int64_t)); /* * If this is a PNIC chip, zero the buffer. This is part * of the workaround for the receive bug in the 82c168 and * 82c169 chips. */ if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) bzero((char *)mtod(m_new, char *), m_new->m_len); sc->dc_cdata.dc_rx_chain[i] = m_new; c->dc_data = vtophys(mtod(m_new, caddr_t)); c->dc_ctl = DC_RXCTL_RLINK | DC_RXLEN; c->dc_status = DC_RXSTAT_OWN; return(0); } /* * Grrrrr. * The PNIC chip has a terrible bug in it that manifests itself during * periods of heavy activity. The exact mode of failure if difficult to * pinpoint: sometimes it only happens in promiscuous mode, sometimes it * will happen on slow machines. The bug is that sometimes instead of * uploading one complete frame during reception, it uploads what looks * like the entire contents of its FIFO memory. The frame we want is at * the end of the whole mess, but we never know exactly how much data has * been uploaded, so salvaging the frame is hard. * * There is only one way to do it reliably, and it's disgusting. * Here's what we know: * * - We know there will always be somewhere between one and three extra * descriptors uploaded. * * - We know the desired received frame will always be at the end of the * total data upload. * * - We know the size of the desired received frame because it will be * provided in the length field of the status word in the last descriptor. * * Here's what we do: * * - When we allocate buffers for the receive ring, we bzero() them. * This means that we know that the buffer contents should be all * zeros, except for data uploaded by the chip. * * - We also force the PNIC chip to upload frames that include the * ethernet CRC at the end. * * - We gather all of the bogus frame data into a single buffer. * * - We then position a pointer at the end of this buffer and scan * backwards until we encounter the first non-zero byte of data. * This is the end of the received frame. We know we will encounter * some data at the end of the frame because the CRC will always be * there, so even if the sender transmits a packet of all zeros, * we won't be fooled. * * - We know the size of the actual received frame, so we subtract * that value from the current pointer location. This brings us * to the start of the actual received packet. * * - We copy this into an mbuf and pass it on, along with the actual * frame length. * * The performance hit is tremendous, but it beats dropping frames all * the time. */ #define DC_WHOLEFRAME (DC_RXSTAT_FIRSTFRAG|DC_RXSTAT_LASTFRAG) static void dc_pnic_rx_bug_war(sc, idx) struct dc_softc *sc; int idx; { struct dc_desc *cur_rx; struct dc_desc *c = NULL; struct mbuf *m = NULL; unsigned char *ptr; int i, total_len; u_int32_t rxstat = 0; i = sc->dc_pnic_rx_bug_save; cur_rx = &sc->dc_ldata->dc_rx_list[idx]; ptr = sc->dc_pnic_rx_buf; bzero(ptr, DC_RXLEN * 5); /* Copy all the bytes from the bogus buffers. */ while (1) { c = &sc->dc_ldata->dc_rx_list[i]; rxstat = c->dc_status; m = sc->dc_cdata.dc_rx_chain[i]; bcopy(mtod(m, char *), ptr, DC_RXLEN); ptr += DC_RXLEN; /* If this is the last buffer, break out. */ if (i == idx || rxstat & DC_RXSTAT_LASTFRAG) break; dc_newbuf(sc, i, m); DC_INC(i, DC_RX_LIST_CNT); } /* Find the length of the actual receive frame. */ total_len = DC_RXBYTES(rxstat); /* Scan backwards until we hit a non-zero byte. */ while(*ptr == 0x00) ptr--; /* Round off. */ if ((uintptr_t)(ptr) & 0x3) ptr -= 1; /* Now find the start of the frame. */ ptr -= total_len; if (ptr < sc->dc_pnic_rx_buf) ptr = sc->dc_pnic_rx_buf; /* * Now copy the salvaged frame to the last mbuf and fake up * the status word to make it look like a successful * frame reception. */ dc_newbuf(sc, i, m); bcopy(ptr, mtod(m, char *), total_len); cur_rx->dc_status = rxstat | DC_RXSTAT_FIRSTFRAG; return; } /* * This routine searches the RX ring for dirty descriptors in the * event that the rxeof routine falls out of sync with the chip's * current descriptor pointer. This may happen sometimes as a result * of a "no RX buffer available" condition that happens when the chip * consumes all of the RX buffers before the driver has a chance to * process the RX ring. This routine may need to be called more than * once to bring the driver back in sync with the chip, however we * should still be getting RX DONE interrupts to drive the search * for new packets in the RX ring, so we should catch up eventually. */ static int dc_rx_resync(sc) struct dc_softc *sc; { int i, pos; struct dc_desc *cur_rx; pos = sc->dc_cdata.dc_rx_prod; for (i = 0; i < DC_RX_LIST_CNT; i++) { cur_rx = &sc->dc_ldata->dc_rx_list[pos]; if (!(cur_rx->dc_status & DC_RXSTAT_OWN)) break; DC_INC(pos, DC_RX_LIST_CNT); } /* If the ring really is empty, then just return. */ if (i == DC_RX_LIST_CNT) return(0); /* We've fallen behing the chip: catch it. */ sc->dc_cdata.dc_rx_prod = pos; return(EAGAIN); } /* * A frame has been uploaded: pass the resulting mbuf chain up to * the higher level protocols. */ static void dc_rxeof(sc) struct dc_softc *sc; { struct mbuf *m; struct ifnet *ifp; struct dc_desc *cur_rx; int i, total_len = 0; u_int32_t rxstat; ifp = &sc->arpcom.ac_if; i = sc->dc_cdata.dc_rx_prod; while(!(sc->dc_ldata->dc_rx_list[i].dc_status & DC_RXSTAT_OWN)) { #ifdef DEVICE_POLLING if (ifp->if_flags & IFF_POLLING) { if (sc->rxcycles <= 0) break; sc->rxcycles--; } #endif /* DEVICE_POLLING */ cur_rx = &sc->dc_ldata->dc_rx_list[i]; rxstat = cur_rx->dc_status; m = sc->dc_cdata.dc_rx_chain[i]; total_len = DC_RXBYTES(rxstat); if (sc->dc_flags & DC_PNIC_RX_BUG_WAR) { if ((rxstat & DC_WHOLEFRAME) != DC_WHOLEFRAME) { if (rxstat & DC_RXSTAT_FIRSTFRAG) sc->dc_pnic_rx_bug_save = i; if ((rxstat & DC_RXSTAT_LASTFRAG) == 0) { DC_INC(i, DC_RX_LIST_CNT); continue; } dc_pnic_rx_bug_war(sc, i); rxstat = cur_rx->dc_status; total_len = DC_RXBYTES(rxstat); } } sc->dc_cdata.dc_rx_chain[i] = NULL; /* * 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. However, don't report long * frames as errors since they could be vlans */ if ((rxstat & DC_RXSTAT_RXERR)){ if (!(rxstat & DC_RXSTAT_GIANT) || (rxstat & (DC_RXSTAT_CRCERR | DC_RXSTAT_DRIBBLE | DC_RXSTAT_MIIERE | DC_RXSTAT_COLLSEEN | DC_RXSTAT_RUNT | DC_RXSTAT_DE))) { ifp->if_ierrors++; if (rxstat & DC_RXSTAT_COLLSEEN) ifp->if_collisions++; dc_newbuf(sc, i, m); if (rxstat & DC_RXSTAT_CRCERR) { DC_INC(i, DC_RX_LIST_CNT); continue; } else { dc_init(sc); return; } } } /* No errors; receive the packet. */ total_len -= ETHER_CRC_LEN; #ifdef __i386__ /* * On the x86 we do not have alignment problems, so try to * allocate a new buffer for the receive ring, and pass up * the one where the packet is already, saving the expensive * copy done in m_devget(). * If we are on an architecture with alignment problems, or * if the allocation fails, then use m_devget and leave the * existing buffer in the receive ring. */ if (dc_quick && dc_newbuf(sc, i, NULL) == 0) { m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = m->m_len = total_len; DC_INC(i, DC_RX_LIST_CNT); } else #endif { struct mbuf *m0; m0 = m_devget(mtod(m, char *) - ETHER_ALIGN, total_len + ETHER_ALIGN, 0, ifp, NULL); dc_newbuf(sc, i, m); DC_INC(i, DC_RX_LIST_CNT); if (m0 == NULL) { ifp->if_ierrors++; continue; } m_adj(m0, ETHER_ALIGN); m = m0; } ifp->if_ipackets++; (*ifp->if_input)(ifp, m); } sc->dc_cdata.dc_rx_prod = i; } /* * A frame was downloaded to the chip. It's safe for us to clean up * the list buffers. */ static void dc_txeof(sc) struct dc_softc *sc; { struct dc_desc *cur_tx = NULL; struct ifnet *ifp; int idx; ifp = &sc->arpcom.ac_if; /* * Go through our tx list and free mbufs for those * frames that have been transmitted. */ idx = sc->dc_cdata.dc_tx_cons; while(idx != sc->dc_cdata.dc_tx_prod) { u_int32_t txstat; cur_tx = &sc->dc_ldata->dc_tx_list[idx]; txstat = cur_tx->dc_status; if (txstat & DC_TXSTAT_OWN) break; if (!(cur_tx->dc_ctl & DC_TXCTL_LASTFRAG) || cur_tx->dc_ctl & DC_TXCTL_SETUP) { if (cur_tx->dc_ctl & DC_TXCTL_SETUP) { /* * Yes, the PNIC is so brain damaged * that it will sometimes generate a TX * underrun error while DMAing the RX * filter setup frame. If we detect this, * we have to send the setup frame again, * or else the filter won't be programmed * correctly. */ if (DC_IS_PNIC(sc)) { if (txstat & DC_TXSTAT_ERRSUM) dc_setfilt(sc); } sc->dc_cdata.dc_tx_chain[idx] = NULL; } sc->dc_cdata.dc_tx_cnt--; DC_INC(idx, DC_TX_LIST_CNT); continue; } if (DC_IS_CONEXANT(sc)) { /* * For some reason Conexant chips like * setting the CARRLOST flag even when * the carrier is there. In CURRENT we * have the same problem for Xircom * cards ! */ if (/*sc->dc_type == DC_TYPE_21143 &&*/ sc->dc_pmode == DC_PMODE_MII && ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM| DC_TXSTAT_NOCARRIER))) txstat &= ~DC_TXSTAT_ERRSUM; } else { if (/*sc->dc_type == DC_TYPE_21143 &&*/ sc->dc_pmode == DC_PMODE_MII && ((txstat & 0xFFFF) & ~(DC_TXSTAT_ERRSUM| DC_TXSTAT_NOCARRIER|DC_TXSTAT_CARRLOST))) txstat &= ~DC_TXSTAT_ERRSUM; } if (txstat & DC_TXSTAT_ERRSUM) { ifp->if_oerrors++; if (txstat & DC_TXSTAT_EXCESSCOLL) ifp->if_collisions++; if (txstat & DC_TXSTAT_LATECOLL) ifp->if_collisions++; if (!(txstat & DC_TXSTAT_UNDERRUN)) { dc_init(sc); return; } } ifp->if_collisions += (txstat & DC_TXSTAT_COLLCNT) >> 3; ifp->if_opackets++; if (sc->dc_cdata.dc_tx_chain[idx] != NULL) { m_freem(sc->dc_cdata.dc_tx_chain[idx]); sc->dc_cdata.dc_tx_chain[idx] = NULL; } sc->dc_cdata.dc_tx_cnt--; DC_INC(idx, DC_TX_LIST_CNT); } if (idx != sc->dc_cdata.dc_tx_cons) { /* some buffers have been freed */ sc->dc_cdata.dc_tx_cons = idx; ifp->if_flags &= ~IFF_OACTIVE; } ifp->if_timer = (sc->dc_cdata.dc_tx_cnt == 0) ? 0 : 5; return; } static void dc_tick(xsc) void *xsc; { struct dc_softc *sc = xsc; struct ifnet *ifp = &sc->arpcom.ac_if; struct mii_data *mii; u_int32_t r; crit_enter(); mii = device_get_softc(sc->dc_miibus); if (sc->dc_flags & DC_REDUCED_MII_POLL) { if (sc->dc_flags & DC_21143_NWAY) { r = CSR_READ_4(sc, DC_10BTSTAT); if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX && (r & DC_TSTAT_LS100)) { sc->dc_link = 0; mii_mediachg(mii); } if (IFM_SUBTYPE(mii->mii_media_active) == IFM_10_T && (r & DC_TSTAT_LS10)) { sc->dc_link = 0; mii_mediachg(mii); } if (sc->dc_link == 0) mii_tick(mii); } else { r = CSR_READ_4(sc, DC_ISR); if ((r & DC_ISR_RX_STATE) == DC_RXSTATE_WAIT && sc->dc_cdata.dc_tx_cnt == 0) mii_tick(mii); if (!(mii->mii_media_status & IFM_ACTIVE)) sc->dc_link = 0; } } else mii_tick(mii); /* * When the init routine completes, we expect to be able to send * packets right away, and in fact the network code will send a * gratuitous ARP the moment the init routine marks the interface * as running. However, even though the MAC may have been initialized, * there may be a delay of a few seconds before the PHY completes * autonegotiation and the link is brought up. Any transmissions * made during that delay will be lost. Dealing with this is tricky: * we can't just pause in the init routine while waiting for the * PHY to come ready since that would bring the whole system to * a screeching halt for several seconds. * * What we do here is prevent the TX start routine from sending * any packets until a link has been established. After the * interface has been initialized, the tick routine will poll * the state of the PHY until the IFM_ACTIVE flag is set. Until * that time, packets will stay in the send queue, and once the * link comes up, they will be flushed out to the wire. */ if (!sc->dc_link) { mii_pollstat(mii); if (mii->mii_media_status & IFM_ACTIVE && IFM_SUBTYPE(mii->mii_media_active) != IFM_NONE) { sc->dc_link++; if (!ifq_is_empty(&ifp->if_snd)) dc_start(ifp); } } if (sc->dc_flags & DC_21143_NWAY && !sc->dc_link) callout_reset(&sc->dc_stat_timer, hz / 10, dc_tick, sc); else callout_reset(&sc->dc_stat_timer, hz, dc_tick, sc); crit_exit(); } /* * A transmit underrun has occurred. Back off the transmit threshold, * or switch to store and forward mode if we have to. */ static void dc_tx_underrun(sc) struct dc_softc *sc; { u_int32_t isr; int i; if (DC_IS_DAVICOM(sc)) dc_init(sc); if (DC_IS_INTEL(sc)) { /* * The real 21143 requires that the transmitter be idle * in order to change the transmit threshold or store * and forward state. */ DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); for (i = 0; i < DC_TIMEOUT; i++) { isr = CSR_READ_4(sc, DC_ISR); if (isr & DC_ISR_TX_IDLE) break; DELAY(10); } if (i == DC_TIMEOUT) { if_printf(&sc->arpcom.ac_if, "failed to force tx to idle state\n"); dc_init(sc); } } if_printf(&sc->arpcom.ac_if, "TX underrun -- "); sc->dc_txthresh += DC_TXTHRESH_INC; if (sc->dc_txthresh > DC_TXTHRESH_MAX) { printf("using store and forward mode\n"); DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); } else { printf("increasing TX threshold\n"); DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); } if (DC_IS_INTEL(sc)) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); return; } #ifdef DEVICE_POLLING static void dc_poll(struct ifnet *ifp, enum poll_cmd cmd, int count) { struct dc_softc *sc = ifp->if_softc; u_int32_t status; switch(cmd) { case POLL_REGISTER: /* Disable interrupts */ CSR_WRITE_4(sc, DC_IMR, 0x00000000); break; case POLL_DEREGISTER: /* Re-enable interrupts. */ CSR_WRITE_4(sc, DC_IMR, DC_INTRS); break; case POLL_ONLY: sc->rxcycles = count; dc_rxeof(sc); dc_txeof(sc); if ((ifp->if_flags & IFF_OACTIVE) == 0 && !ifq_is_empty(&ifp->if_snd)) dc_start(ifp); break; case POLL_AND_CHECK_STATUS: sc->rxcycles = count; dc_rxeof(sc); dc_txeof(sc); if ((ifp->if_flags & IFF_OACTIVE) == 0 && !ifq_is_empty(&ifp->if_snd)) dc_start(ifp); status = CSR_READ_4(sc, DC_ISR); status &= (DC_ISR_RX_WATDOGTIMEO|DC_ISR_RX_NOBUF| DC_ISR_TX_NOBUF|DC_ISR_TX_IDLE|DC_ISR_TX_UNDERRUN| DC_ISR_BUS_ERR); if (!status) break; /* ack what we have */ CSR_WRITE_4(sc, DC_ISR, status); if (status & (DC_ISR_RX_WATDOGTIMEO|DC_ISR_RX_NOBUF) ) { u_int32_t r = CSR_READ_4(sc, DC_FRAMESDISCARDED); ifp->if_ierrors += (r & 0xffff) + ((r >> 17) & 0x7ff); if (dc_rx_resync(sc)) dc_rxeof(sc); } /* restart transmit unit if necessary */ if (status & DC_ISR_TX_IDLE && sc->dc_cdata.dc_tx_cnt) CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); if (status & DC_ISR_TX_UNDERRUN) dc_tx_underrun(sc); if (status & DC_ISR_BUS_ERR) { if_printf(ifp, "dc_poll: bus error\n"); dc_reset(sc); dc_init(sc); } break; } } #endif /* DEVICE_POLLING */ static void dc_intr(arg) void *arg; { struct dc_softc *sc; struct ifnet *ifp; u_int32_t status; sc = arg; if (sc->suspended) { return; } ifp = &sc->arpcom.ac_if; if ( (CSR_READ_4(sc, DC_ISR) & DC_INTRS) == 0) return ; /* Suppress unwanted interrupts */ if (!(ifp->if_flags & IFF_UP)) { if (CSR_READ_4(sc, DC_ISR) & DC_INTRS) dc_stop(sc); return; } /* Disable interrupts. */ CSR_WRITE_4(sc, DC_IMR, 0x00000000); while((status = CSR_READ_4(sc, DC_ISR)) & DC_INTRS) { CSR_WRITE_4(sc, DC_ISR, status); if (status & DC_ISR_RX_OK) { int curpkts; curpkts = ifp->if_ipackets; dc_rxeof(sc); if (curpkts == ifp->if_ipackets) { while(dc_rx_resync(sc)) dc_rxeof(sc); } } if (status & (DC_ISR_TX_OK|DC_ISR_TX_NOBUF)) dc_txeof(sc); if (status & DC_ISR_TX_IDLE) { dc_txeof(sc); if (sc->dc_cdata.dc_tx_cnt) { DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); } } if (status & DC_ISR_TX_UNDERRUN) dc_tx_underrun(sc); if ((status & DC_ISR_RX_WATDOGTIMEO) || (status & DC_ISR_RX_NOBUF)) { int curpkts; curpkts = ifp->if_ipackets; dc_rxeof(sc); if (curpkts == ifp->if_ipackets) { while(dc_rx_resync(sc)) dc_rxeof(sc); } } if (status & DC_ISR_BUS_ERR) { dc_reset(sc); dc_init(sc); } } /* Re-enable interrupts. */ CSR_WRITE_4(sc, DC_IMR, DC_INTRS); if (!ifq_is_empty(&ifp->if_snd)) dc_start(ifp); return; } /* * Encapsulate an mbuf chain in a descriptor by coupling the mbuf data * pointers to the fragment pointers. */ static int dc_encap(sc, m_head, txidx) struct dc_softc *sc; struct mbuf *m_head; u_int32_t *txidx; { struct dc_desc *f = NULL; struct mbuf *m; int frag, cur, cnt = 0; /* * Start packing the mbufs in this chain into * the fragment pointers. Stop when we run out * of fragments or hit the end of the mbuf chain. */ m = m_head; cur = frag = *txidx; for (m = m_head; m != NULL; m = m->m_next) { if (m->m_len != 0) { if (sc->dc_flags & DC_TX_ADMTEK_WAR) { if (*txidx != sc->dc_cdata.dc_tx_prod && frag == (DC_TX_LIST_CNT - 1)) return(ENOBUFS); } if ((DC_TX_LIST_CNT - (sc->dc_cdata.dc_tx_cnt + cnt)) < 5) return(ENOBUFS); f = &sc->dc_ldata->dc_tx_list[frag]; f->dc_ctl = DC_TXCTL_TLINK | m->m_len; if (cnt == 0) { f->dc_status = 0; f->dc_ctl |= DC_TXCTL_FIRSTFRAG; } else f->dc_status = DC_TXSTAT_OWN; f->dc_data = vtophys(mtod(m, vm_offset_t)); cur = frag; DC_INC(frag, DC_TX_LIST_CNT); cnt++; } } if (m != NULL) return(ENOBUFS); sc->dc_cdata.dc_tx_cnt += cnt; sc->dc_cdata.dc_tx_chain[cur] = m_head; sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_LASTFRAG; if (sc->dc_flags & DC_TX_INTR_FIRSTFRAG) sc->dc_ldata->dc_tx_list[*txidx].dc_ctl |= DC_TXCTL_FINT; if (sc->dc_flags & DC_TX_INTR_ALWAYS) sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_FINT; if (sc->dc_flags & DC_TX_USE_TX_INTR && sc->dc_cdata.dc_tx_cnt > 64) sc->dc_ldata->dc_tx_list[cur].dc_ctl |= DC_TXCTL_FINT; sc->dc_ldata->dc_tx_list[*txidx].dc_status = DC_TXSTAT_OWN; *txidx = frag; 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 dc_start(ifp) struct ifnet *ifp; { struct dc_softc *sc; struct mbuf *m_head = NULL, *m_new; int did_defrag, idx; sc = ifp->if_softc; if (!sc->dc_link) return; if (ifp->if_flags & IFF_OACTIVE) return; idx = sc->dc_cdata.dc_tx_prod; while(sc->dc_cdata.dc_tx_chain[idx] == NULL) { did_defrag = 0; m_head = ifq_poll(&ifp->if_snd); if (m_head == NULL) break; if (sc->dc_flags & DC_TX_COALESCE && m_head->m_next != NULL) { /* * Check first if coalescing allows us to queue * the packet. We don't want to loose it if * the TX queue is full. */ if ((sc->dc_flags & DC_TX_ADMTEK_WAR) && idx != sc->dc_cdata.dc_tx_prod && idx == (DC_TX_LIST_CNT - 1)) { ifp->if_flags |= IFF_OACTIVE; break; } if ((DC_TX_LIST_CNT - sc->dc_cdata.dc_tx_cnt) < 5) { ifp->if_flags |= IFF_OACTIVE; break; } /* only coalesce if have >1 mbufs */ m_new = m_defrag_nofree(m_head, MB_DONTWAIT); if (m_new == NULL) { ifp->if_flags |= IFF_OACTIVE; break; } m_freem(m_head); m_head = m_new; did_defrag = 1; } if (dc_encap(sc, m_head, &idx)) { if (did_defrag) { m_freem(m_head); m_new = ifq_dequeue(&ifp->if_snd); m_freem(m_new); } ifp->if_flags |= IFF_OACTIVE; break; } m_new = ifq_dequeue(&ifp->if_snd); if (did_defrag) m_freem(m_new); /* * If there's a BPF listener, bounce a copy of this frame * to him. */ BPF_MTAP(ifp, m_head); if (sc->dc_flags & DC_TX_ONE) { ifp->if_flags |= IFF_OACTIVE; break; } } /* Transmit */ sc->dc_cdata.dc_tx_prod = idx; if (!(sc->dc_flags & DC_TX_POLL)) CSR_WRITE_4(sc, DC_TXSTART, 0xFFFFFFFF); /* * Set a timeout in case the chip goes out to lunch. */ ifp->if_timer = 5; return; } static void dc_init(xsc) void *xsc; { struct dc_softc *sc = xsc; struct ifnet *ifp = &sc->arpcom.ac_if; struct mii_data *mii; crit_enter(); mii = device_get_softc(sc->dc_miibus); /* * Cancel pending I/O and free all RX/TX buffers. */ dc_stop(sc); dc_reset(sc); /* * Set cache alignment and burst length. */ if (DC_IS_ASIX(sc) || DC_IS_DAVICOM(sc)) CSR_WRITE_4(sc, DC_BUSCTL, 0); else CSR_WRITE_4(sc, DC_BUSCTL, DC_BUSCTL_MRME|DC_BUSCTL_MRLE); /* * Evenly share the bus between receive and transmit process. */ if (DC_IS_INTEL(sc)) DC_SETBIT(sc, DC_BUSCTL, DC_BUSCTL_ARBITRATION); if (DC_IS_DAVICOM(sc) || DC_IS_INTEL(sc)) { DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_USECA); } else { DC_SETBIT(sc, DC_BUSCTL, DC_BURSTLEN_16LONG); } if (sc->dc_flags & DC_TX_POLL) DC_SETBIT(sc, DC_BUSCTL, DC_TXPOLL_1); switch(sc->dc_cachesize) { case 32: DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_32LONG); break; case 16: DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_16LONG); break; case 8: DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_8LONG); break; case 0: default: DC_SETBIT(sc, DC_BUSCTL, DC_CACHEALIGN_NONE); break; } if (sc->dc_flags & DC_TX_STORENFWD) DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); else { if (sc->dc_txthresh > DC_TXTHRESH_MAX) { DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); } else { DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_STORENFWD); DC_SETBIT(sc, DC_NETCFG, sc->dc_txthresh); } } DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_NO_RXCRC); DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_BACKOFF); if (DC_IS_MACRONIX(sc) || DC_IS_PNICII(sc)) { /* * The app notes for the 98713 and 98715A say that * in order to have the chips operate properly, a magic * number must be written to CSR16. Macronix does not * document the meaning of these bits so there's no way * to know exactly what they do. The 98713 has a magic * number all its own; the rest all use a different one. */ DC_CLRBIT(sc, DC_MX_MAGICPACKET, 0xFFFF0000); if (sc->dc_type == DC_TYPE_98713) DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98713); else DC_SETBIT(sc, DC_MX_MAGICPACKET, DC_MX_MAGIC_98715); } DC_CLRBIT(sc, DC_NETCFG, DC_NETCFG_TX_THRESH); DC_SETBIT(sc, DC_NETCFG, DC_TXTHRESH_MIN); /* Init circular RX list. */ if (dc_list_rx_init(sc) == ENOBUFS) { if_printf(ifp, "initialization failed: no " "memory for rx buffers\n"); dc_stop(sc); crit_exit(); return; } /* * Init tx descriptors. */ dc_list_tx_init(sc); /* * Load the address of the RX list. */ CSR_WRITE_4(sc, DC_RXADDR, vtophys(&sc->dc_ldata->dc_rx_list[0])); CSR_WRITE_4(sc, DC_TXADDR, vtophys(&sc->dc_ldata->dc_tx_list[0])); /* * Enable interrupts. */ #ifdef DEVICE_POLLING /* * ... but only if we are not polling, and make sure they are off in * the case of polling. Some cards (e.g. fxp) turn interrupts on * after a reset. */ if (ifp->if_flags & IFF_POLLING) CSR_WRITE_4(sc, DC_IMR, 0x00000000); else #endif CSR_WRITE_4(sc, DC_IMR, DC_INTRS); CSR_WRITE_4(sc, DC_ISR, 0xFFFFFFFF); /* Enable transmitter. */ DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_TX_ON); /* * If this is an Intel 21143 and we're not using the * MII port, program the LED control pins so we get * link and activity indications. */ if (sc->dc_flags & DC_TULIP_LEDS) { CSR_WRITE_4(sc, DC_WATCHDOG, DC_WDOG_CTLWREN|DC_WDOG_LINK|DC_WDOG_ACTIVITY); CSR_WRITE_4(sc, DC_WATCHDOG, 0); } /* * Load the RX/multicast filter. We do this sort of late * because the filter programming scheme on the 21143 and * some clones requires DMAing a setup frame via the TX * engine, and we need the transmitter enabled for that. */ dc_setfilt(sc); /* Enable receiver. */ DC_SETBIT(sc, DC_NETCFG, DC_NETCFG_RX_ON); CSR_WRITE_4(sc, DC_RXSTART, 0xFFFFFFFF); mii_mediachg(mii); dc_setcfg(sc, sc->dc_if_media); ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; crit_exit(); /* Don't start the ticker if this is a homePNA link. */ if (IFM_SUBTYPE(mii->mii_media.ifm_media) == IFM_HPNA_1) sc->dc_link = 1; else { if (sc->dc_flags & DC_21143_NWAY) callout_reset(&sc->dc_stat_timer, hz/10, dc_tick, sc); else callout_reset(&sc->dc_stat_timer, hz, dc_tick, sc); } return; } /* * Set media options. */ static int dc_ifmedia_upd(ifp) struct ifnet *ifp; { struct dc_softc *sc; struct mii_data *mii; struct ifmedia *ifm; sc = ifp->if_softc; mii = device_get_softc(sc->dc_miibus); mii_mediachg(mii); ifm = &mii->mii_media; if (DC_IS_DAVICOM(sc) && IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) dc_setcfg(sc, ifm->ifm_media); else sc->dc_link = 0; return(0); } /* * Report current media status. */ static void dc_ifmedia_sts(ifp, ifmr) struct ifnet *ifp; struct ifmediareq *ifmr; { struct dc_softc *sc; struct mii_data *mii; struct ifmedia *ifm; sc = ifp->if_softc; mii = device_get_softc(sc->dc_miibus); mii_pollstat(mii); ifm = &mii->mii_media; if (DC_IS_DAVICOM(sc)) { if (IFM_SUBTYPE(ifm->ifm_media) == IFM_HPNA_1) { ifmr->ifm_active = ifm->ifm_media; ifmr->ifm_status = 0; return; } } ifmr->ifm_active = mii->mii_media_active; ifmr->ifm_status = mii->mii_media_status; return; } static int dc_ioctl(ifp, command, data, cr) struct ifnet *ifp; u_long command; caddr_t data; struct ucred *cr; { struct dc_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *) data; struct mii_data *mii; int error = 0; crit_enter(); switch(command) { case SIOCSIFFLAGS: if (ifp->if_flags & IFF_UP) { int need_setfilt = (ifp->if_flags ^ sc->dc_if_flags) & (IFF_PROMISC | IFF_ALLMULTI); if (ifp->if_flags & IFF_RUNNING) { if (need_setfilt) dc_setfilt(sc); } else { sc->dc_txthresh = 0; dc_init(sc); } } else { if (ifp->if_flags & IFF_RUNNING) dc_stop(sc); } sc->dc_if_flags = ifp->if_flags; error = 0; break; case SIOCADDMULTI: case SIOCDELMULTI: dc_setfilt(sc); error = 0; break; case SIOCGIFMEDIA: case SIOCSIFMEDIA: mii = device_get_softc(sc->dc_miibus); error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); break; default: error = ether_ioctl(ifp, command, data); break; } crit_exit(); return(error); } static void dc_watchdog(ifp) struct ifnet *ifp; { struct dc_softc *sc; sc = ifp->if_softc; ifp->if_oerrors++; if_printf(ifp, "watchdog timeout\n"); dc_stop(sc); dc_reset(sc); dc_init(sc); if (!ifq_is_empty(&ifp->if_snd)) dc_start(ifp); return; } /* * Stop the adapter and free any mbufs allocated to the * RX and TX lists. */ static void dc_stop(sc) struct dc_softc *sc; { int i; struct ifnet *ifp; ifp = &sc->arpcom.ac_if; ifp->if_timer = 0; callout_stop(&sc->dc_stat_timer); ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); DC_CLRBIT(sc, DC_NETCFG, (DC_NETCFG_RX_ON|DC_NETCFG_TX_ON)); CSR_WRITE_4(sc, DC_IMR, 0x00000000); CSR_WRITE_4(sc, DC_TXADDR, 0x00000000); CSR_WRITE_4(sc, DC_RXADDR, 0x00000000); sc->dc_link = 0; /* * Free data in the RX lists. */ for (i = 0; i < DC_RX_LIST_CNT; i++) { if (sc->dc_cdata.dc_rx_chain[i] != NULL) { m_freem(sc->dc_cdata.dc_rx_chain[i]); sc->dc_cdata.dc_rx_chain[i] = NULL; } } bzero((char *)&sc->dc_ldata->dc_rx_list, sizeof(sc->dc_ldata->dc_rx_list)); /* * Free the TX list buffers. */ for (i = 0; i < DC_TX_LIST_CNT; i++) { if (sc->dc_cdata.dc_tx_chain[i] != NULL) { if ((sc->dc_ldata->dc_tx_list[i].dc_ctl & DC_TXCTL_SETUP) || !(sc->dc_ldata->dc_tx_list[i].dc_ctl & DC_TXCTL_LASTFRAG)) { sc->dc_cdata.dc_tx_chain[i] = NULL; continue; } m_freem(sc->dc_cdata.dc_tx_chain[i]); sc->dc_cdata.dc_tx_chain[i] = NULL; } } bzero((char *)&sc->dc_ldata->dc_tx_list, sizeof(sc->dc_ldata->dc_tx_list)); return; } /* * Stop all chip I/O so that the kernel's probe routines don't * get confused by errant DMAs when rebooting. */ static void dc_shutdown(dev) device_t dev; { struct dc_softc *sc; sc = device_get_softc(dev); dc_stop(sc); return; } /* * Device suspend routine. Stop the interface and save some PCI * settings in case the BIOS doesn't restore them properly on * resume. */ static int dc_suspend(dev) device_t dev; { struct dc_softc *sc = device_get_softc(dev); int i; crit_enter(); dc_stop(sc); for (i = 0; i < 5; i++) sc->saved_maps[i] = pci_read_config(dev, PCIR_MAPS + i * 4, 4); sc->saved_biosaddr = pci_read_config(dev, PCIR_BIOS, 4); sc->saved_intline = pci_read_config(dev, PCIR_INTLINE, 1); sc->saved_cachelnsz = pci_read_config(dev, PCIR_CACHELNSZ, 1); sc->saved_lattimer = pci_read_config(dev, PCIR_LATTIMER, 1); sc->suspended = 1; crit_exit(); return (0); } /* * Device resume routine. Restore some PCI settings in case the BIOS * doesn't, re-enable busmastering, and restart the interface if * appropriate. */ static int dc_resume(dev) device_t dev; { struct dc_softc *sc = device_get_softc(dev); struct ifnet *ifp = &sc->arpcom.ac_if; int i; crit_enter(); dc_acpi(dev); /* better way to do this? */ for (i = 0; i < 5; i++) pci_write_config(dev, PCIR_MAPS + i * 4, sc->saved_maps[i], 4); pci_write_config(dev, PCIR_BIOS, sc->saved_biosaddr, 4); pci_write_config(dev, PCIR_INTLINE, sc->saved_intline, 1); pci_write_config(dev, PCIR_CACHELNSZ, sc->saved_cachelnsz, 1); pci_write_config(dev, PCIR_LATTIMER, sc->saved_lattimer, 1); /* reenable busmastering */ pci_enable_busmaster(dev); pci_enable_io(dev, DC_RES); /* reinitialize interface if necessary */ if (ifp->if_flags & IFF_UP) dc_init(sc); sc->suspended = 0; crit_exit(); return (0); }