/* $OpenBSD: re.c,v 1.206 2020/07/10 13:26:37 patrick Exp $ */ /* $FreeBSD: if_re.c,v 1.31 2004/09/04 07:54:05 ru Exp $ */ /* * Copyright (c) 1997, 1998-2003 * 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. */ /* * Realtek 8139C+/8169/8169S/8110S PCI NIC driver * * Written by Bill Paul * Senior Networking Software Engineer * Wind River Systems */ /* * This driver is designed to support Realtek's next generation of * 10/100 and 10/100/1000 PCI ethernet controllers. There are currently * seven devices in this family: the RTL8139C+, the RTL8169, the RTL8169S, * RTL8110S, the RTL8168, the RTL8111 and the RTL8101E. * * The 8139C+ is a 10/100 ethernet chip. It is backwards compatible * with the older 8139 family, however it also supports a special * C+ mode of operation that provides several new performance enhancing * features. These include: * * o Descriptor based DMA mechanism. Each descriptor represents * a single packet fragment. Data buffers may be aligned on * any byte boundary. * * o 64-bit DMA * * o TCP/IP checksum offload for both RX and TX * * o High and normal priority transmit DMA rings * * o VLAN tag insertion and extraction * * o TCP large send (segmentation offload) * * Like the 8139, the 8139C+ also has a built-in 10/100 PHY. The C+ * programming API is fairly straightforward. The RX filtering, EEPROM * access and PHY access is the same as it is on the older 8139 series * chips. * * The 8169 is a 64-bit 10/100/1000 gigabit ethernet MAC. It has almost the * same programming API and feature set as the 8139C+ with the following * differences and additions: * * o 1000Mbps mode * * o Jumbo frames * * o GMII and TBI ports/registers for interfacing with copper * or fiber PHYs * * o RX and TX DMA rings can have up to 1024 descriptors * (the 8139C+ allows a maximum of 64) * * o Slight differences in register layout from the 8139C+ * * The TX start and timer interrupt registers are at different locations * on the 8169 than they are on the 8139C+. Also, the status word in the * RX descriptor has a slightly different bit layout. The 8169 does not * have a built-in PHY. Most reference boards use a Marvell 88E1000 'Alaska' * copper gigE PHY. * * The 8169S/8110S 10/100/1000 devices have built-in copper gigE PHYs * (the 'S' stands for 'single-chip'). These devices have the same * programming API as the older 8169, but also have some vendor-specific * registers for the on-board PHY. The 8110S is a LAN-on-motherboard * part designed to be pin-compatible with the Realtek 8100 10/100 chip. * * This driver takes advantage of the RX and TX checksum offload and * VLAN tag insertion/extraction features. It also implements TX * interrupt moderation using the timer interrupt registers, which * significantly reduces TX interrupt load. There is also support * for jumbo frames, however the 8169/8169S/8110S can not transmit * jumbo frames larger than 7440, so the max MTU possible with this * driver is 7422 bytes. */ #include "bpfilter.h" #include "vlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif #include #include #include #include #include #ifdef RE_DEBUG int redebug = 0; #define DPRINTF(x) do { if (redebug) printf x; } while (0) #else #define DPRINTF(x) #endif static inline void re_set_bufaddr(struct rl_desc *, bus_addr_t); int re_encap(struct rl_softc *, unsigned int, struct mbuf *); int re_newbuf(struct rl_softc *); int re_rx_list_init(struct rl_softc *); void re_rx_list_fill(struct rl_softc *); int re_tx_list_init(struct rl_softc *); int re_rxeof(struct rl_softc *); int re_txeof(struct rl_softc *); void re_tick(void *); void re_start(struct ifqueue *); void re_txstart(void *); int re_ioctl(struct ifnet *, u_long, caddr_t); void re_watchdog(struct ifnet *); int re_ifmedia_upd(struct ifnet *); void re_ifmedia_sts(struct ifnet *, struct ifmediareq *); void re_set_jumbo(struct rl_softc *); void re_eeprom_putbyte(struct rl_softc *, int); void re_eeprom_getword(struct rl_softc *, int, u_int16_t *); void re_read_eeprom(struct rl_softc *, caddr_t, int, int); int re_gmii_readreg(struct device *, int, int); void re_gmii_writereg(struct device *, int, int, int); int re_miibus_readreg(struct device *, int, int); void re_miibus_writereg(struct device *, int, int, int); void re_miibus_statchg(struct device *); void re_iff(struct rl_softc *); void re_setup_hw_im(struct rl_softc *); void re_setup_sim_im(struct rl_softc *); void re_disable_hw_im(struct rl_softc *); void re_disable_sim_im(struct rl_softc *); void re_config_imtype(struct rl_softc *, int); void re_setup_intr(struct rl_softc *, int, int); #ifndef SMALL_KERNEL int re_wol(struct ifnet*, int); #endif void in_delayed_cksum(struct mbuf *); struct cfdriver re_cd = { 0, "re", DV_IFNET }; extern char *hw_vendor, *hw_prod; #define EE_SET(x) \ CSR_WRITE_1(sc, RL_EECMD, \ CSR_READ_1(sc, RL_EECMD) | x) #define EE_CLR(x) \ CSR_WRITE_1(sc, RL_EECMD, \ CSR_READ_1(sc, RL_EECMD) & ~x) #define RL_FRAMELEN(mtu) \ (mtu + ETHER_HDR_LEN + ETHER_CRC_LEN + \ ETHER_VLAN_ENCAP_LEN) static const struct re_revision { u_int32_t re_chipid; const char *re_name; } re_revisions[] = { { RL_HWREV_8100, "RTL8100" }, { RL_HWREV_8100E, "RTL8100E" }, { RL_HWREV_8100E_SPIN2, "RTL8100E 2" }, { RL_HWREV_8101, "RTL8101" }, { RL_HWREV_8101E, "RTL8101E" }, { RL_HWREV_8102E, "RTL8102E" }, { RL_HWREV_8106E, "RTL8106E" }, { RL_HWREV_8401E, "RTL8401E" }, { RL_HWREV_8402, "RTL8402" }, { RL_HWREV_8411, "RTL8411" }, { RL_HWREV_8411B, "RTL8411B" }, { RL_HWREV_8102EL, "RTL8102EL" }, { RL_HWREV_8102EL_SPIN1, "RTL8102EL 1" }, { RL_HWREV_8103E, "RTL8103E" }, { RL_HWREV_8110S, "RTL8110S" }, { RL_HWREV_8139CPLUS, "RTL8139C+" }, { RL_HWREV_8168B_SPIN1, "RTL8168 1" }, { RL_HWREV_8168B_SPIN2, "RTL8168 2" }, { RL_HWREV_8168B_SPIN3, "RTL8168 3" }, { RL_HWREV_8168C, "RTL8168C/8111C" }, { RL_HWREV_8168C_SPIN2, "RTL8168C/8111C" }, { RL_HWREV_8168CP, "RTL8168CP/8111CP" }, { RL_HWREV_8168F, "RTL8168F/8111F" }, { RL_HWREV_8168G, "RTL8168G/8111G" }, { RL_HWREV_8168GU, "RTL8168GU/8111GU" }, { RL_HWREV_8168H, "RTL8168H/8111H" }, { RL_HWREV_8105E, "RTL8105E" }, { RL_HWREV_8105E_SPIN1, "RTL8105E" }, { RL_HWREV_8168D, "RTL8168D/8111D" }, { RL_HWREV_8168DP, "RTL8168DP/8111DP" }, { RL_HWREV_8168E, "RTL8168E/8111E" }, { RL_HWREV_8168E_VL, "RTL8168E/8111E-VL" }, { RL_HWREV_8168EP, "RTL8168EP/8111EP" }, { RL_HWREV_8169, "RTL8169" }, { RL_HWREV_8169_8110SB, "RTL8169/8110SB" }, { RL_HWREV_8169_8110SBL, "RTL8169SBL" }, { RL_HWREV_8169_8110SCd, "RTL8169/8110SCd" }, { RL_HWREV_8169_8110SCe, "RTL8169/8110SCe" }, { RL_HWREV_8169S, "RTL8169S" }, { 0, NULL } }; static inline void re_set_bufaddr(struct rl_desc *d, bus_addr_t addr) { d->rl_bufaddr_lo = htole32((uint32_t)addr); if (sizeof(bus_addr_t) == sizeof(uint64_t)) d->rl_bufaddr_hi = htole32((uint64_t)addr >> 32); else d->rl_bufaddr_hi = 0; } /* * Send a read command and address to the EEPROM, check for ACK. */ void re_eeprom_putbyte(struct rl_softc *sc, int addr) { int d, i; d = addr | (RL_9346_READ << sc->rl_eewidth); /* * Feed in each bit and strobe the clock. */ for (i = 1 << (sc->rl_eewidth + 3); i; i >>= 1) { if (d & i) EE_SET(RL_EE_DATAIN); else EE_CLR(RL_EE_DATAIN); DELAY(100); EE_SET(RL_EE_CLK); DELAY(150); EE_CLR(RL_EE_CLK); DELAY(100); } } /* * Read a word of data stored in the EEPROM at address 'addr.' */ void re_eeprom_getword(struct rl_softc *sc, int addr, u_int16_t *dest) { int i; u_int16_t word = 0; /* * Send address of word we want to read. */ re_eeprom_putbyte(sc, addr); /* * Start reading bits from EEPROM. */ for (i = 0x8000; i; i >>= 1) { EE_SET(RL_EE_CLK); DELAY(100); if (CSR_READ_1(sc, RL_EECMD) & RL_EE_DATAOUT) word |= i; EE_CLR(RL_EE_CLK); DELAY(100); } *dest = word; } /* * Read a sequence of words from the EEPROM. */ void re_read_eeprom(struct rl_softc *sc, caddr_t dest, int off, int cnt) { int i; u_int16_t word = 0, *ptr; CSR_SETBIT_1(sc, RL_EECMD, RL_EEMODE_PROGRAM); DELAY(100); for (i = 0; i < cnt; i++) { CSR_SETBIT_1(sc, RL_EECMD, RL_EE_SEL); re_eeprom_getword(sc, off + i, &word); CSR_CLRBIT_1(sc, RL_EECMD, RL_EE_SEL); ptr = (u_int16_t *)(dest + (i * 2)); *ptr = word; } CSR_CLRBIT_1(sc, RL_EECMD, RL_EEMODE_PROGRAM); } int re_gmii_readreg(struct device *self, int phy, int reg) { struct rl_softc *sc = (struct rl_softc *)self; u_int32_t rval; int i; if (phy != 7) return (0); /* Let the rgephy driver read the GMEDIASTAT register */ if (reg == RL_GMEDIASTAT) { rval = CSR_READ_1(sc, RL_GMEDIASTAT); return (rval); } CSR_WRITE_4(sc, RL_PHYAR, reg << 16); for (i = 0; i < RL_PHY_TIMEOUT; i++) { rval = CSR_READ_4(sc, RL_PHYAR); if (rval & RL_PHYAR_BUSY) break; DELAY(25); } if (i == RL_PHY_TIMEOUT) { printf ("%s: PHY read failed\n", sc->sc_dev.dv_xname); return (0); } DELAY(20); return (rval & RL_PHYAR_PHYDATA); } void re_gmii_writereg(struct device *dev, int phy, int reg, int data) { struct rl_softc *sc = (struct rl_softc *)dev; u_int32_t rval; int i; CSR_WRITE_4(sc, RL_PHYAR, (reg << 16) | (data & RL_PHYAR_PHYDATA) | RL_PHYAR_BUSY); for (i = 0; i < RL_PHY_TIMEOUT; i++) { rval = CSR_READ_4(sc, RL_PHYAR); if (!(rval & RL_PHYAR_BUSY)) break; DELAY(25); } if (i == RL_PHY_TIMEOUT) printf ("%s: PHY write failed\n", sc->sc_dev.dv_xname); DELAY(20); } int re_miibus_readreg(struct device *dev, int phy, int reg) { struct rl_softc *sc = (struct rl_softc *)dev; u_int16_t rval = 0; u_int16_t re8139_reg = 0; int s; s = splnet(); if (sc->sc_hwrev != RL_HWREV_8139CPLUS) { rval = re_gmii_readreg(dev, phy, reg); splx(s); return (rval); } /* Pretend the internal PHY is only at address 0 */ if (phy) { splx(s); return (0); } switch(reg) { case MII_BMCR: re8139_reg = RL_BMCR; break; case MII_BMSR: re8139_reg = RL_BMSR; break; case MII_ANAR: re8139_reg = RL_ANAR; break; case MII_ANER: re8139_reg = RL_ANER; break; case MII_ANLPAR: re8139_reg = RL_LPAR; break; case MII_PHYIDR1: case MII_PHYIDR2: splx(s); return (0); /* * Allow the rlphy driver to read the media status * register. If we have a link partner which does not * support NWAY, this is the register which will tell * us the results of parallel detection. */ case RL_MEDIASTAT: rval = CSR_READ_1(sc, RL_MEDIASTAT); splx(s); return (rval); default: printf("%s: bad phy register %x\n", sc->sc_dev.dv_xname, reg); splx(s); return (0); } rval = CSR_READ_2(sc, re8139_reg); if (re8139_reg == RL_BMCR) { /* 8139C+ has different bit layout. */ rval &= ~(BMCR_LOOP | BMCR_ISO); } splx(s); return (rval); } void re_miibus_writereg(struct device *dev, int phy, int reg, int data) { struct rl_softc *sc = (struct rl_softc *)dev; u_int16_t re8139_reg = 0; int s; s = splnet(); if (sc->sc_hwrev != RL_HWREV_8139CPLUS) { re_gmii_writereg(dev, phy, reg, data); splx(s); return; } /* Pretend the internal PHY is only at address 0 */ if (phy) { splx(s); return; } switch(reg) { case MII_BMCR: re8139_reg = RL_BMCR; /* 8139C+ has different bit layout. */ data &= ~(BMCR_LOOP | BMCR_ISO); break; case MII_BMSR: re8139_reg = RL_BMSR; break; case MII_ANAR: re8139_reg = RL_ANAR; break; case MII_ANER: re8139_reg = RL_ANER; break; case MII_ANLPAR: re8139_reg = RL_LPAR; break; case MII_PHYIDR1: case MII_PHYIDR2: splx(s); return; break; default: printf("%s: bad phy register %x\n", sc->sc_dev.dv_xname, reg); splx(s); return; } CSR_WRITE_2(sc, re8139_reg, data); splx(s); } void re_miibus_statchg(struct device *dev) { struct rl_softc *sc = (struct rl_softc *)dev; struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct mii_data *mii = &sc->sc_mii; if ((ifp->if_flags & IFF_RUNNING) == 0) return; sc->rl_flags &= ~RL_FLAG_LINK; if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) == (IFM_ACTIVE | IFM_AVALID)) { switch (IFM_SUBTYPE(mii->mii_media_active)) { case IFM_10_T: case IFM_100_TX: sc->rl_flags |= RL_FLAG_LINK; break; case IFM_1000_T: if ((sc->rl_flags & RL_FLAG_FASTETHER) != 0) break; sc->rl_flags |= RL_FLAG_LINK; break; default: break; } } /* * Realtek controllers do not provide an interface to * Tx/Rx MACs for resolved speed, duplex and flow-control * parameters. */ } void re_iff(struct rl_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; int h = 0; u_int32_t hashes[2]; u_int32_t rxfilt; struct arpcom *ac = &sc->sc_arpcom; struct ether_multi *enm; struct ether_multistep step; rxfilt = CSR_READ_4(sc, RL_RXCFG); rxfilt &= ~(RL_RXCFG_RX_ALLPHYS | RL_RXCFG_RX_BROAD | RL_RXCFG_RX_INDIV | RL_RXCFG_RX_MULTI); ifp->if_flags &= ~IFF_ALLMULTI; /* * Always accept frames destined to our station address. * Always accept broadcast frames. */ rxfilt |= RL_RXCFG_RX_INDIV | RL_RXCFG_RX_BROAD; if (ifp->if_flags & IFF_PROMISC || ac->ac_multirangecnt > 0) { ifp->if_flags |= IFF_ALLMULTI; rxfilt |= RL_RXCFG_RX_MULTI; if (ifp->if_flags & IFF_PROMISC) rxfilt |= RL_RXCFG_RX_ALLPHYS; hashes[0] = hashes[1] = 0xFFFFFFFF; } else { rxfilt |= RL_RXCFG_RX_MULTI; /* Program new filter. */ bzero(hashes, sizeof(hashes)); ETHER_FIRST_MULTI(step, ac, enm); while (enm != NULL) { h = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN) >> 26; if (h < 32) hashes[0] |= (1 << h); else hashes[1] |= (1 << (h - 32)); ETHER_NEXT_MULTI(step, enm); } } /* * For some unfathomable reason, Realtek decided to reverse * the order of the multicast hash registers in the PCI Express * parts. This means we have to write the hash pattern in reverse * order for those devices. */ if (sc->rl_flags & RL_FLAG_PCIE) { CSR_WRITE_4(sc, RL_MAR0, swap32(hashes[1])); CSR_WRITE_4(sc, RL_MAR4, swap32(hashes[0])); } else { CSR_WRITE_4(sc, RL_MAR0, hashes[0]); CSR_WRITE_4(sc, RL_MAR4, hashes[1]); } CSR_WRITE_4(sc, RL_RXCFG, rxfilt); } void re_reset(struct rl_softc *sc) { int i; CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_RESET); for (i = 0; i < RL_TIMEOUT; i++) { DELAY(10); if (!(CSR_READ_1(sc, RL_COMMAND) & RL_CMD_RESET)) break; } if (i == RL_TIMEOUT) printf("%s: reset never completed!\n", sc->sc_dev.dv_xname); if (sc->rl_flags & RL_FLAG_MACRESET) CSR_WRITE_1(sc, RL_LDPS, 1); } /* * Attach the interface. Allocate softc structures, do ifmedia * setup and ethernet/BPF attach. */ int re_attach(struct rl_softc *sc, const char *intrstr) { u_char eaddr[ETHER_ADDR_LEN]; u_int16_t as[ETHER_ADDR_LEN / 2]; struct ifnet *ifp; u_int16_t re_did = 0; int error = 0, i; const struct re_revision *rr; const char *re_name = NULL; sc->sc_hwrev = CSR_READ_4(sc, RL_TXCFG) & RL_TXCFG_HWREV; switch (sc->sc_hwrev) { case RL_HWREV_8139CPLUS: sc->rl_flags |= RL_FLAG_FASTETHER | RL_FLAG_AUTOPAD; sc->rl_max_mtu = RL_MTU; break; case RL_HWREV_8100E: case RL_HWREV_8100E_SPIN2: case RL_HWREV_8101E: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_FASTETHER; sc->rl_max_mtu = RL_MTU; break; case RL_HWREV_8103E: sc->rl_flags |= RL_FLAG_MACSLEEP; /* FALLTHROUGH */ case RL_HWREV_8102E: case RL_HWREV_8102EL: case RL_HWREV_8102EL_SPIN1: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_FASTETHER | RL_FLAG_CMDSTOP | RL_FLAG_AUTOPAD; sc->rl_max_mtu = RL_MTU; break; case RL_HWREV_8401E: case RL_HWREV_8105E: case RL_HWREV_8105E_SPIN1: case RL_HWREV_8106E: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PHYWAKE_PM | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_FASTETHER | RL_FLAG_CMDSTOP | RL_FLAG_AUTOPAD; sc->rl_max_mtu = RL_MTU; break; case RL_HWREV_8402: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PHYWAKE_PM | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_FASTETHER | RL_FLAG_CMDSTOP | RL_FLAG_AUTOPAD | RL_FLAG_CMDSTOP_WAIT_TXQ; sc->rl_max_mtu = RL_MTU; break; case RL_HWREV_8168B_SPIN1: case RL_HWREV_8168B_SPIN2: sc->rl_flags |= RL_FLAG_WOLRXENB; /* FALLTHROUGH */ case RL_HWREV_8168B_SPIN3: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_MACSTAT; sc->rl_max_mtu = RL_MTU; break; case RL_HWREV_8168C_SPIN2: sc->rl_flags |= RL_FLAG_MACSLEEP; /* FALLTHROUGH */ case RL_HWREV_8168C: case RL_HWREV_8168CP: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_CMDSTOP | RL_FLAG_AUTOPAD | RL_FLAG_JUMBOV2 | RL_FLAG_WOL_MANLINK; sc->rl_max_mtu = RL_JUMBO_MTU_6K; break; case RL_HWREV_8168D: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PHYWAKE_PM | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_CMDSTOP | RL_FLAG_AUTOPAD | RL_FLAG_JUMBOV2 | RL_FLAG_WOL_MANLINK; sc->rl_max_mtu = RL_JUMBO_MTU_9K; break; case RL_HWREV_8168DP: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_AUTOPAD | RL_FLAG_JUMBOV2 | RL_FLAG_WAIT_TXPOLL | RL_FLAG_WOL_MANLINK; sc->rl_max_mtu = RL_JUMBO_MTU_9K; break; case RL_HWREV_8168E: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PHYWAKE_PM | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_CMDSTOP | RL_FLAG_AUTOPAD | RL_FLAG_JUMBOV2 | RL_FLAG_WOL_MANLINK; sc->rl_max_mtu = RL_JUMBO_MTU_9K; break; case RL_HWREV_8168E_VL: sc->rl_flags |= RL_FLAG_EARLYOFF | RL_FLAG_PHYWAKE | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_CMDSTOP | RL_FLAG_AUTOPAD | RL_FLAG_JUMBOV2 | RL_FLAG_CMDSTOP_WAIT_TXQ | RL_FLAG_WOL_MANLINK; sc->rl_max_mtu = RL_JUMBO_MTU_6K; break; case RL_HWREV_8168F: sc->rl_flags |= RL_FLAG_EARLYOFF; /* FALLTHROUGH */ case RL_HWREV_8411: sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_CMDSTOP | RL_FLAG_AUTOPAD | RL_FLAG_JUMBOV2 | RL_FLAG_CMDSTOP_WAIT_TXQ | RL_FLAG_WOL_MANLINK; sc->rl_max_mtu = RL_JUMBO_MTU_9K; break; case RL_HWREV_8168EP: case RL_HWREV_8168G: case RL_HWREV_8168GU: case RL_HWREV_8168H: case RL_HWREV_8411B: if (sc->sc_product == PCI_PRODUCT_REALTEK_RT8101E) { /* RTL8106EUS */ sc->rl_flags |= RL_FLAG_FASTETHER; sc->rl_max_mtu = RL_MTU; } else { sc->rl_flags |= RL_FLAG_JUMBOV2 | RL_FLAG_WOL_MANLINK; sc->rl_max_mtu = RL_JUMBO_MTU_9K; } sc->rl_flags |= RL_FLAG_PHYWAKE | RL_FLAG_PAR | RL_FLAG_DESCV2 | RL_FLAG_MACSTAT | RL_FLAG_CMDSTOP | RL_FLAG_AUTOPAD | RL_FLAG_CMDSTOP_WAIT_TXQ | RL_FLAG_EARLYOFFV2 | RL_FLAG_RXDV_GATED; break; case RL_HWREV_8169_8110SB: case RL_HWREV_8169_8110SBL: case RL_HWREV_8169_8110SCd: case RL_HWREV_8169_8110SCe: sc->rl_flags |= RL_FLAG_PHYWAKE; /* FALLTHROUGH */ case RL_HWREV_8169: case RL_HWREV_8169S: case RL_HWREV_8110S: sc->rl_flags |= RL_FLAG_MACRESET; sc->rl_max_mtu = RL_JUMBO_MTU_7K; break; default: break; } if (sc->sc_hwrev == RL_HWREV_8139CPLUS) { sc->rl_cfg0 = RL_8139_CFG0; sc->rl_cfg1 = RL_8139_CFG1; sc->rl_cfg2 = 0; sc->rl_cfg3 = RL_8139_CFG3; sc->rl_cfg4 = RL_8139_CFG4; sc->rl_cfg5 = RL_8139_CFG5; } else { sc->rl_cfg0 = RL_CFG0; sc->rl_cfg1 = RL_CFG1; sc->rl_cfg2 = RL_CFG2; sc->rl_cfg3 = RL_CFG3; sc->rl_cfg4 = RL_CFG4; sc->rl_cfg5 = RL_CFG5; } /* Reset the adapter. */ re_reset(sc); sc->rl_tx_time = 5; /* 125us */ sc->rl_rx_time = 2; /* 50us */ if (sc->rl_flags & RL_FLAG_PCIE) sc->rl_sim_time = 75; /* 75us */ else sc->rl_sim_time = 125; /* 125us */ sc->rl_imtype = RL_IMTYPE_SIM; /* simulated interrupt moderation */ if (sc->sc_hwrev == RL_HWREV_8139CPLUS) sc->rl_bus_speed = 33; /* XXX */ else if (sc->rl_flags & RL_FLAG_PCIE) sc->rl_bus_speed = 125; else { u_int8_t cfg2; cfg2 = CSR_READ_1(sc, sc->rl_cfg2); switch (cfg2 & RL_CFG2_PCI_MASK) { case RL_CFG2_PCI_33MHZ: sc->rl_bus_speed = 33; break; case RL_CFG2_PCI_66MHZ: sc->rl_bus_speed = 66; break; default: printf("%s: unknown bus speed, assume 33MHz\n", sc->sc_dev.dv_xname); sc->rl_bus_speed = 33; break; } if (cfg2 & RL_CFG2_PCI_64BIT) sc->rl_flags |= RL_FLAG_PCI64; } re_config_imtype(sc, sc->rl_imtype); if (sc->rl_flags & RL_FLAG_PAR) { /* * XXX Should have a better way to extract station * address from EEPROM. */ for (i = 0; i < ETHER_ADDR_LEN; i++) eaddr[i] = CSR_READ_1(sc, RL_IDR0 + i); } else { sc->rl_eewidth = RL_9356_ADDR_LEN; re_read_eeprom(sc, (caddr_t)&re_did, 0, 1); if (re_did != 0x8129) sc->rl_eewidth = RL_9346_ADDR_LEN; /* * Get station address from the EEPROM. */ re_read_eeprom(sc, (caddr_t)as, RL_EE_EADDR, 3); for (i = 0; i < ETHER_ADDR_LEN / 2; i++) as[i] = letoh16(as[i]); bcopy(as, eaddr, ETHER_ADDR_LEN); } /* * Set RX length mask, TX poll request register * and descriptor count. */ if (sc->sc_hwrev == RL_HWREV_8139CPLUS) { sc->rl_rxlenmask = RL_RDESC_STAT_FRAGLEN; sc->rl_txstart = RL_TXSTART; sc->rl_ldata.rl_tx_desc_cnt = RL_8139_TX_DESC_CNT; sc->rl_ldata.rl_rx_desc_cnt = RL_8139_RX_DESC_CNT; sc->rl_ldata.rl_tx_ndescs = RL_8139_NTXSEGS; } else { sc->rl_rxlenmask = RL_RDESC_STAT_GFRAGLEN; sc->rl_txstart = RL_GTXSTART; sc->rl_ldata.rl_tx_desc_cnt = RL_8169_TX_DESC_CNT; sc->rl_ldata.rl_rx_desc_cnt = RL_8169_RX_DESC_CNT; sc->rl_ldata.rl_tx_ndescs = RL_8169_NTXSEGS; } bcopy(eaddr, (char *)&sc->sc_arpcom.ac_enaddr, ETHER_ADDR_LEN); for (rr = re_revisions; rr->re_name != NULL; rr++) { if (rr->re_chipid == sc->sc_hwrev) re_name = rr->re_name; } if (re_name == NULL) printf(": unknown ASIC (0x%04x)", sc->sc_hwrev >> 16); else printf(": %s (0x%04x)", re_name, sc->sc_hwrev >> 16); printf(", %s, address %s\n", intrstr, ether_sprintf(sc->sc_arpcom.ac_enaddr)); /* Allocate DMA'able memory for the TX ring */ if ((error = bus_dmamem_alloc(sc->sc_dmat, RL_TX_LIST_SZ(sc), RL_RING_ALIGN, 0, &sc->rl_ldata.rl_tx_listseg, 1, &sc->rl_ldata.rl_tx_listnseg, BUS_DMA_NOWAIT | BUS_DMA_ZERO)) != 0) { printf("%s: can't allocate tx listseg, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_0; } /* Load the map for the TX ring. */ if ((error = bus_dmamem_map(sc->sc_dmat, &sc->rl_ldata.rl_tx_listseg, sc->rl_ldata.rl_tx_listnseg, RL_TX_LIST_SZ(sc), (caddr_t *)&sc->rl_ldata.rl_tx_list, BUS_DMA_COHERENT | BUS_DMA_NOWAIT)) != 0) { printf("%s: can't map tx list, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_1; } if ((error = bus_dmamap_create(sc->sc_dmat, RL_TX_LIST_SZ(sc), 1, RL_TX_LIST_SZ(sc), 0, 0, &sc->rl_ldata.rl_tx_list_map)) != 0) { printf("%s: can't create tx list map, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_2; } if ((error = bus_dmamap_load(sc->sc_dmat, sc->rl_ldata.rl_tx_list_map, sc->rl_ldata.rl_tx_list, RL_TX_LIST_SZ(sc), NULL, BUS_DMA_NOWAIT)) != 0) { printf("%s: can't load tx list, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_3; } /* Create DMA maps for TX buffers */ for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++) { error = bus_dmamap_create(sc->sc_dmat, RL_JUMBO_FRAMELEN, sc->rl_ldata.rl_tx_ndescs, RL_JUMBO_FRAMELEN, 0, 0, &sc->rl_ldata.rl_txq[i].txq_dmamap); if (error) { printf("%s: can't create DMA map for TX\n", sc->sc_dev.dv_xname); goto fail_4; } } /* Allocate DMA'able memory for the RX ring */ if ((error = bus_dmamem_alloc(sc->sc_dmat, RL_RX_DMAMEM_SZ(sc), RL_RING_ALIGN, 0, &sc->rl_ldata.rl_rx_listseg, 1, &sc->rl_ldata.rl_rx_listnseg, BUS_DMA_NOWAIT | BUS_DMA_ZERO)) != 0) { printf("%s: can't allocate rx listnseg, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_4; } /* Load the map for the RX ring. */ if ((error = bus_dmamem_map(sc->sc_dmat, &sc->rl_ldata.rl_rx_listseg, sc->rl_ldata.rl_rx_listnseg, RL_RX_DMAMEM_SZ(sc), (caddr_t *)&sc->rl_ldata.rl_rx_list, BUS_DMA_COHERENT | BUS_DMA_NOWAIT)) != 0) { printf("%s: can't map rx list, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_5; } if ((error = bus_dmamap_create(sc->sc_dmat, RL_RX_DMAMEM_SZ(sc), 1, RL_RX_DMAMEM_SZ(sc), 0, 0, &sc->rl_ldata.rl_rx_list_map)) != 0) { printf("%s: can't create rx list map, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_6; } if ((error = bus_dmamap_load(sc->sc_dmat, sc->rl_ldata.rl_rx_list_map, sc->rl_ldata.rl_rx_list, RL_RX_DMAMEM_SZ(sc), NULL, BUS_DMA_NOWAIT)) != 0) { printf("%s: can't load rx list, error = %d\n", sc->sc_dev.dv_xname, error); goto fail_7; } /* Create DMA maps for RX buffers */ for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++) { error = bus_dmamap_create(sc->sc_dmat, RL_FRAMELEN(sc->rl_max_mtu), 1, RL_FRAMELEN(sc->rl_max_mtu), 0, 0, &sc->rl_ldata.rl_rxsoft[i].rxs_dmamap); if (error) { printf("%s: can't create DMA map for RX\n", sc->sc_dev.dv_xname); goto fail_8; } } ifp = &sc->sc_arpcom.ac_if; ifp->if_softc = sc; strlcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_xflags = IFXF_MPSAFE; ifp->if_ioctl = re_ioctl; ifp->if_qstart = re_start; ifp->if_watchdog = re_watchdog; ifp->if_hardmtu = sc->rl_max_mtu; ifq_set_maxlen(&ifp->if_snd, sc->rl_ldata.rl_tx_desc_cnt); ifp->if_capabilities = IFCAP_VLAN_MTU | IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4; /* * RTL8168/8111C generates wrong IP checksummed frame if the * packet has IP options so disable TX IP checksum offloading. */ switch (sc->sc_hwrev) { case RL_HWREV_8168C: case RL_HWREV_8168C_SPIN2: case RL_HWREV_8168CP: break; default: ifp->if_capabilities |= IFCAP_CSUM_IPv4; } #if NVLAN > 0 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING; #endif #ifndef SMALL_KERNEL ifp->if_capabilities |= IFCAP_WOL; ifp->if_wol = re_wol; re_wol(ifp, 0); #endif timeout_set(&sc->timer_handle, re_tick, sc); task_set(&sc->rl_start, re_txstart, sc); /* Take PHY out of power down mode. */ if (sc->rl_flags & RL_FLAG_PHYWAKE_PM) { CSR_WRITE_1(sc, RL_PMCH, CSR_READ_1(sc, RL_PMCH) | 0x80); if (sc->sc_hwrev == RL_HWREV_8401E) CSR_WRITE_1(sc, 0xD1, CSR_READ_1(sc, 0xD1) & ~0x08); } if (sc->rl_flags & RL_FLAG_PHYWAKE) { re_gmii_writereg((struct device *)sc, 1, 0x1f, 0); re_gmii_writereg((struct device *)sc, 1, 0x0e, 0); } /* Do MII setup */ sc->sc_mii.mii_ifp = ifp; sc->sc_mii.mii_readreg = re_miibus_readreg; sc->sc_mii.mii_writereg = re_miibus_writereg; sc->sc_mii.mii_statchg = re_miibus_statchg; ifmedia_init(&sc->sc_mii.mii_media, IFM_IMASK, re_ifmedia_upd, re_ifmedia_sts); mii_attach(&sc->sc_dev, &sc->sc_mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, MIIF_DOPAUSE); if (LIST_FIRST(&sc->sc_mii.mii_phys) == NULL) { printf("%s: no PHY found!\n", sc->sc_dev.dv_xname); ifmedia_add(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE, 0, NULL); ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_NONE); } else ifmedia_set(&sc->sc_mii.mii_media, IFM_ETHER|IFM_AUTO); /* * Call MI attach routine. */ if_attach(ifp); ether_ifattach(ifp); return (0); fail_8: /* Destroy DMA maps for RX buffers. */ for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++) { if (sc->rl_ldata.rl_rxsoft[i].rxs_dmamap != NULL) bus_dmamap_destroy(sc->sc_dmat, sc->rl_ldata.rl_rxsoft[i].rxs_dmamap); } /* Free DMA'able memory for the RX ring. */ bus_dmamap_unload(sc->sc_dmat, sc->rl_ldata.rl_rx_list_map); fail_7: bus_dmamap_destroy(sc->sc_dmat, sc->rl_ldata.rl_rx_list_map); fail_6: bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->rl_ldata.rl_rx_list, RL_RX_DMAMEM_SZ(sc)); fail_5: bus_dmamem_free(sc->sc_dmat, &sc->rl_ldata.rl_rx_listseg, sc->rl_ldata.rl_rx_listnseg); fail_4: /* Destroy DMA maps for TX buffers. */ for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++) { if (sc->rl_ldata.rl_txq[i].txq_dmamap != NULL) bus_dmamap_destroy(sc->sc_dmat, sc->rl_ldata.rl_txq[i].txq_dmamap); } /* Free DMA'able memory for the TX ring. */ bus_dmamap_unload(sc->sc_dmat, sc->rl_ldata.rl_tx_list_map); fail_3: bus_dmamap_destroy(sc->sc_dmat, sc->rl_ldata.rl_tx_list_map); fail_2: bus_dmamem_unmap(sc->sc_dmat, (caddr_t)sc->rl_ldata.rl_tx_list, RL_TX_LIST_SZ(sc)); fail_1: bus_dmamem_free(sc->sc_dmat, &sc->rl_ldata.rl_tx_listseg, sc->rl_ldata.rl_tx_listnseg); fail_0: return (1); } int re_newbuf(struct rl_softc *sc) { struct mbuf *m; bus_dmamap_t map; struct rl_desc *d; struct rl_rxsoft *rxs; u_int32_t cmdstat; int error, idx; m = MCLGETI(NULL, M_DONTWAIT, NULL, RL_FRAMELEN(sc->rl_max_mtu)); if (!m) return (ENOBUFS); /* * Initialize mbuf length fields and fixup * alignment so that the frame payload is * longword aligned on strict alignment archs. */ m->m_len = m->m_pkthdr.len = RL_FRAMELEN(sc->rl_max_mtu); m->m_data += RE_ETHER_ALIGN; idx = sc->rl_ldata.rl_rx_prodidx; rxs = &sc->rl_ldata.rl_rxsoft[idx]; map = rxs->rxs_dmamap; error = bus_dmamap_load_mbuf(sc->sc_dmat, map, m, BUS_DMA_READ|BUS_DMA_NOWAIT); if (error) { m_freem(m); return (ENOBUFS); } bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, BUS_DMASYNC_PREREAD); d = &sc->rl_ldata.rl_rx_list[idx]; RL_RXDESCSYNC(sc, idx, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); cmdstat = letoh32(d->rl_cmdstat); RL_RXDESCSYNC(sc, idx, BUS_DMASYNC_PREREAD); if (cmdstat & RL_RDESC_STAT_OWN) { printf("%s: tried to map busy RX descriptor\n", sc->sc_dev.dv_xname); m_freem(m); return (ENOBUFS); } rxs->rxs_mbuf = m; d->rl_vlanctl = 0; cmdstat = map->dm_segs[0].ds_len; if (idx == sc->rl_ldata.rl_rx_desc_cnt - 1) cmdstat |= RL_RDESC_CMD_EOR; re_set_bufaddr(d, map->dm_segs[0].ds_addr); d->rl_cmdstat = htole32(cmdstat); RL_RXDESCSYNC(sc, idx, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); cmdstat |= RL_RDESC_CMD_OWN; d->rl_cmdstat = htole32(cmdstat); RL_RXDESCSYNC(sc, idx, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); sc->rl_ldata.rl_rx_prodidx = RL_NEXT_RX_DESC(sc, idx); return (0); } int re_tx_list_init(struct rl_softc *sc) { int i; memset(sc->rl_ldata.rl_tx_list, 0, RL_TX_LIST_SZ(sc)); for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++) { sc->rl_ldata.rl_txq[i].txq_mbuf = NULL; } bus_dmamap_sync(sc->sc_dmat, sc->rl_ldata.rl_tx_list_map, 0, sc->rl_ldata.rl_tx_list_map->dm_mapsize, BUS_DMASYNC_PREREAD|BUS_DMASYNC_PREWRITE); sc->rl_ldata.rl_txq_prodidx = 0; sc->rl_ldata.rl_txq_considx = 0; sc->rl_ldata.rl_tx_free = sc->rl_ldata.rl_tx_desc_cnt; sc->rl_ldata.rl_tx_nextfree = 0; return (0); } int re_rx_list_init(struct rl_softc *sc) { bzero(sc->rl_ldata.rl_rx_list, RL_RX_LIST_SZ(sc)); sc->rl_ldata.rl_rx_prodidx = 0; sc->rl_ldata.rl_rx_considx = 0; sc->rl_head = sc->rl_tail = NULL; if_rxr_init(&sc->rl_ldata.rl_rx_ring, 2, sc->rl_ldata.rl_rx_desc_cnt - 1); re_rx_list_fill(sc); return (0); } void re_rx_list_fill(struct rl_softc *sc) { u_int slots; for (slots = if_rxr_get(&sc->rl_ldata.rl_rx_ring, sc->rl_ldata.rl_rx_desc_cnt); slots > 0; slots--) { if (re_newbuf(sc) == ENOBUFS) break; } if_rxr_put(&sc->rl_ldata.rl_rx_ring, slots); } /* * RX handler for C+ and 8169. For the gigE chips, we support * the reception of jumbo frames that have been fragmented * across multiple 2K mbuf cluster buffers. */ int re_rxeof(struct rl_softc *sc) { struct mbuf_list ml = MBUF_LIST_INITIALIZER(); struct mbuf *m; struct ifnet *ifp; int i, total_len, rx = 0; struct rl_desc *cur_rx; struct rl_rxsoft *rxs; u_int32_t rxstat, rxvlan; ifp = &sc->sc_arpcom.ac_if; for (i = sc->rl_ldata.rl_rx_considx; if_rxr_inuse(&sc->rl_ldata.rl_rx_ring) > 0; i = RL_NEXT_RX_DESC(sc, i)) { cur_rx = &sc->rl_ldata.rl_rx_list[i]; RL_RXDESCSYNC(sc, i, BUS_DMASYNC_POSTREAD|BUS_DMASYNC_POSTWRITE); rxstat = letoh32(cur_rx->rl_cmdstat); rxvlan = letoh32(cur_rx->rl_vlanctl); RL_RXDESCSYNC(sc, i, BUS_DMASYNC_PREREAD); if ((rxstat & RL_RDESC_STAT_OWN) != 0) break; total_len = rxstat & sc->rl_rxlenmask; rxs = &sc->rl_ldata.rl_rxsoft[i]; m = rxs->rxs_mbuf; rxs->rxs_mbuf = NULL; if_rxr_put(&sc->rl_ldata.rl_rx_ring, 1); rx = 1; /* Invalidate the RX mbuf and unload its map */ bus_dmamap_sync(sc->sc_dmat, rxs->rxs_dmamap, 0, rxs->rxs_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->sc_dmat, rxs->rxs_dmamap); if ((sc->rl_flags & RL_FLAG_JUMBOV2) != 0 && (rxstat & (RL_RDESC_STAT_SOF | RL_RDESC_STAT_EOF)) != (RL_RDESC_STAT_SOF | RL_RDESC_STAT_EOF)) { continue; } else if (!(rxstat & RL_RDESC_STAT_EOF)) { m->m_len = RL_FRAMELEN(sc->rl_max_mtu); if (sc->rl_head == NULL) sc->rl_head = sc->rl_tail = m; else { m->m_flags &= ~M_PKTHDR; sc->rl_tail->m_next = m; sc->rl_tail = m; } continue; } /* * NOTE: for the 8139C+, the frame length field * is always 12 bits in size, but for the gigE chips, * it is 13 bits (since the max RX frame length is 16K). * Unfortunately, all 32 bits in the status word * were already used, so to make room for the extra * length bit, Realtek took out the 'frame alignment * error' bit and shifted the other status bits * over one slot. The OWN, EOR, FS and LS bits are * still in the same places. We have already extracted * the frame length and checked the OWN bit, so rather * than using an alternate bit mapping, we shift the * status bits one space to the right so we can evaluate * them using the 8169 status as though it was in the * same format as that of the 8139C+. */ if (sc->sc_hwrev != RL_HWREV_8139CPLUS) rxstat >>= 1; /* * if total_len > 2^13-1, both _RXERRSUM and _GIANT will be * set, but if CRC is clear, it will still be a valid frame. */ if ((rxstat & RL_RDESC_STAT_RXERRSUM) != 0 && !(rxstat & RL_RDESC_STAT_RXERRSUM && !(total_len > 8191 && (rxstat & RL_RDESC_STAT_ERRS) == RL_RDESC_STAT_GIANT))) { ifp->if_ierrors++; /* * If this is part of a multi-fragment packet, * discard all the pieces. */ if (sc->rl_head != NULL) { m_freem(sc->rl_head); sc->rl_head = sc->rl_tail = NULL; } continue; } if (sc->rl_head != NULL) { m->m_len = total_len % RL_FRAMELEN(sc->rl_max_mtu); if (m->m_len == 0) m->m_len = RL_FRAMELEN(sc->rl_max_mtu); /* * Special case: if there's 4 bytes or less * in this buffer, the mbuf can be discarded: * the last 4 bytes is the CRC, which we don't * care about anyway. */ if (m->m_len <= ETHER_CRC_LEN) { sc->rl_tail->m_len -= (ETHER_CRC_LEN - m->m_len); m_freem(m); } else { m->m_len -= ETHER_CRC_LEN; m->m_flags &= ~M_PKTHDR; sc->rl_tail->m_next = m; } m = sc->rl_head; sc->rl_head = sc->rl_tail = NULL; m->m_pkthdr.len = total_len - ETHER_CRC_LEN; } else m->m_pkthdr.len = m->m_len = (total_len - ETHER_CRC_LEN); /* Do RX checksumming */ if (sc->rl_flags & RL_FLAG_DESCV2) { /* Check IP header checksum */ if ((rxvlan & RL_RDESC_IPV4) && !(rxstat & RL_RDESC_STAT_IPSUMBAD)) m->m_pkthdr.csum_flags |= M_IPV4_CSUM_IN_OK; /* Check TCP/UDP checksum */ if ((rxvlan & (RL_RDESC_IPV4|RL_RDESC_IPV6)) && (((rxstat & RL_RDESC_STAT_TCP) && !(rxstat & RL_RDESC_STAT_TCPSUMBAD)) || ((rxstat & RL_RDESC_STAT_UDP) && !(rxstat & RL_RDESC_STAT_UDPSUMBAD)))) m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK | M_UDP_CSUM_IN_OK; } else { /* Check IP header checksum */ if ((rxstat & RL_RDESC_STAT_PROTOID) && !(rxstat & RL_RDESC_STAT_IPSUMBAD)) m->m_pkthdr.csum_flags |= M_IPV4_CSUM_IN_OK; /* Check TCP/UDP checksum */ if ((RL_TCPPKT(rxstat) && !(rxstat & RL_RDESC_STAT_TCPSUMBAD)) || (RL_UDPPKT(rxstat) && !(rxstat & RL_RDESC_STAT_UDPSUMBAD))) m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK | M_UDP_CSUM_IN_OK; } #if NVLAN > 0 if (rxvlan & RL_RDESC_VLANCTL_TAG) { m->m_pkthdr.ether_vtag = ntohs((rxvlan & RL_RDESC_VLANCTL_DATA)); m->m_flags |= M_VLANTAG; } #endif ml_enqueue(&ml, m); } if (ifiq_input(&ifp->if_rcv, &ml)) if_rxr_livelocked(&sc->rl_ldata.rl_rx_ring); sc->rl_ldata.rl_rx_considx = i; re_rx_list_fill(sc); return (rx); } int re_txeof(struct rl_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct rl_txq *txq; uint32_t txstat; unsigned int prod, cons; unsigned int idx; int free = 0; prod = sc->rl_ldata.rl_txq_prodidx; cons = sc->rl_ldata.rl_txq_considx; while (prod != cons) { txq = &sc->rl_ldata.rl_txq[cons]; idx = txq->txq_descidx; RL_TXDESCSYNC(sc, idx, BUS_DMASYNC_POSTREAD); txstat = letoh32(sc->rl_ldata.rl_tx_list[idx].rl_cmdstat); RL_TXDESCSYNC(sc, idx, BUS_DMASYNC_PREREAD); if (ISSET(txstat, RL_TDESC_CMD_OWN)) { free = 2; break; } bus_dmamap_sync(sc->sc_dmat, txq->txq_dmamap, 0, txq->txq_dmamap->dm_mapsize, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->sc_dmat, txq->txq_dmamap); m_freem(txq->txq_mbuf); txq->txq_mbuf = NULL; if (txstat & (RL_TDESC_STAT_EXCESSCOL | RL_TDESC_STAT_COLCNT)) ifp->if_collisions++; if (txstat & RL_TDESC_STAT_TXERRSUM) ifp->if_oerrors++; cons = RL_NEXT_TX_DESC(sc, idx); free = 1; } if (free == 0) return (0); sc->rl_ldata.rl_txq_considx = cons; /* * Some chips will ignore a second TX request issued while an * existing transmission is in progress. If the transmitter goes * idle but there are still packets waiting to be sent, we need * to restart the channel here to flush them out. This only * seems to be required with the PCIe devices. */ if (ifq_is_oactive(&ifp->if_snd)) ifq_restart(&ifp->if_snd); else if (free == 2) ifq_serialize(&ifp->if_snd, &sc->rl_start); else ifp->if_timer = 0; return (1); } void re_tick(void *xsc) { struct rl_softc *sc = xsc; struct mii_data *mii; int s; mii = &sc->sc_mii; s = splnet(); mii_tick(mii); if ((sc->rl_flags & RL_FLAG_LINK) == 0) re_miibus_statchg(&sc->sc_dev); splx(s); timeout_add_sec(&sc->timer_handle, 1); } int re_intr(void *arg) { struct rl_softc *sc = arg; struct ifnet *ifp; u_int16_t status; int claimed = 0, rx, tx; ifp = &sc->sc_arpcom.ac_if; if (!(ifp->if_flags & IFF_RUNNING)) return (0); /* Disable interrupts. */ CSR_WRITE_2(sc, RL_IMR, 0); rx = tx = 0; status = CSR_READ_2(sc, RL_ISR); /* If the card has gone away the read returns 0xffff. */ if (status == 0xffff) return (0); if (status) CSR_WRITE_2(sc, RL_ISR, status); if (status & RL_ISR_TIMEOUT_EXPIRED) claimed = 1; if (status & RL_INTRS_CPLUS) { if (status & (sc->rl_rx_ack | RL_ISR_RX_ERR | RL_ISR_FIFO_OFLOW)) { rx |= re_rxeof(sc); claimed = 1; } if (status & (sc->rl_tx_ack | RL_ISR_TX_ERR)) { tx |= re_txeof(sc); claimed = 1; } if (status & RL_ISR_SYSTEM_ERR) { KERNEL_LOCK(); re_init(ifp); KERNEL_UNLOCK(); claimed = 1; } } if (sc->rl_imtype == RL_IMTYPE_SIM) { if (sc->rl_timerintr) { if ((tx | rx) == 0) { /* * Nothing needs to be processed, fallback * to use TX/RX interrupts. */ re_setup_intr(sc, 1, RL_IMTYPE_NONE); /* * Recollect, mainly to avoid the possible * race introduced by changing interrupt * masks. */ re_rxeof(sc); re_txeof(sc); } else CSR_WRITE_4(sc, RL_TIMERCNT, 1); /* reload */ } else if (tx | rx) { /* * Assume that using simulated interrupt moderation * (hardware timer based) could reduce the interrupt * rate. */ re_setup_intr(sc, 1, RL_IMTYPE_SIM); } } CSR_WRITE_2(sc, RL_IMR, sc->rl_intrs); return (claimed); } int re_encap(struct rl_softc *sc, unsigned int idx, struct mbuf *m) { struct rl_txq *txq; bus_dmamap_t map; int error, seg, nsegs, curidx, lastidx, pad; int off; struct ip *ip; struct rl_desc *d; u_int32_t cmdstat, vlanctl = 0, csum_flags = 0; /* * Set up checksum offload. Note: checksum offload bits must * appear in all descriptors of a multi-descriptor transmit * attempt. This is according to testing done with an 8169 * chip. This is a requirement. */ /* * Set RL_TDESC_CMD_IPCSUM if any checksum offloading * is requested. Otherwise, RL_TDESC_CMD_TCPCSUM/ * RL_TDESC_CMD_UDPCSUM does not take affect. */ if ((sc->rl_flags & RL_FLAG_JUMBOV2) && m->m_pkthdr.len > RL_MTU && (m->m_pkthdr.csum_flags & (M_IPV4_CSUM_OUT|M_TCP_CSUM_OUT|M_UDP_CSUM_OUT)) != 0) { struct mbuf mh, *mp; mp = m_getptr(m, ETHER_HDR_LEN, &off); mh.m_flags = 0; mh.m_data = mtod(mp, caddr_t) + off; mh.m_next = mp->m_next; mh.m_pkthdr.len = mp->m_pkthdr.len - ETHER_HDR_LEN; mh.m_len = mp->m_len - off; ip = (struct ip *)mh.m_data; if (m->m_pkthdr.csum_flags & M_IPV4_CSUM_OUT) ip->ip_sum = in_cksum(&mh, sizeof(struct ip)); if (m->m_pkthdr.csum_flags & (M_TCP_CSUM_OUT|M_UDP_CSUM_OUT)) in_delayed_cksum(&mh); m->m_pkthdr.csum_flags &= ~(M_IPV4_CSUM_OUT|M_TCP_CSUM_OUT|M_UDP_CSUM_OUT); } if ((m->m_pkthdr.csum_flags & (M_IPV4_CSUM_OUT|M_TCP_CSUM_OUT|M_UDP_CSUM_OUT)) != 0) { if (sc->rl_flags & RL_FLAG_DESCV2) { vlanctl |= RL_TDESC_CMD_IPCSUMV2; if (m->m_pkthdr.csum_flags & M_TCP_CSUM_OUT) vlanctl |= RL_TDESC_CMD_TCPCSUMV2; if (m->m_pkthdr.csum_flags & M_UDP_CSUM_OUT) vlanctl |= RL_TDESC_CMD_UDPCSUMV2; } else { csum_flags |= RL_TDESC_CMD_IPCSUM; if (m->m_pkthdr.csum_flags & M_TCP_CSUM_OUT) csum_flags |= RL_TDESC_CMD_TCPCSUM; if (m->m_pkthdr.csum_flags & M_UDP_CSUM_OUT) csum_flags |= RL_TDESC_CMD_UDPCSUM; } } txq = &sc->rl_ldata.rl_txq[idx]; map = txq->txq_dmamap; error = bus_dmamap_load_mbuf(sc->sc_dmat, map, m, BUS_DMA_WRITE|BUS_DMA_NOWAIT); switch (error) { case 0: break; case EFBIG: if (m_defrag(m, M_DONTWAIT) == 0 && bus_dmamap_load_mbuf(sc->sc_dmat, map, m, BUS_DMA_WRITE|BUS_DMA_NOWAIT) == 0) break; /* FALLTHROUGH */ default: return (0); } bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, BUS_DMASYNC_PREWRITE); nsegs = map->dm_nsegs; pad = 0; /* * With some of the RealTek chips, using the checksum offload * support in conjunction with the autopadding feature results * in the transmission of corrupt frames. For example, if we * need to send a really small IP fragment that's less than 60 * bytes in size, and IP header checksumming is enabled, the * resulting ethernet frame that appears on the wire will * have garbled payload. To work around this, if TX IP checksum * offload is enabled, we always manually pad short frames out * to the minimum ethernet frame size. */ if ((sc->rl_flags & RL_FLAG_AUTOPAD) == 0 && m->m_pkthdr.len < RL_IP4CSUMTX_PADLEN && (m->m_pkthdr.csum_flags & M_IPV4_CSUM_OUT) != 0) { pad = 1; nsegs++; } /* * Set up hardware VLAN tagging. Note: vlan tag info must * appear in all descriptors of a multi-descriptor * transmission attempt. */ #if NVLAN > 0 if (m->m_flags & M_VLANTAG) vlanctl |= swap16(m->m_pkthdr.ether_vtag) | RL_TDESC_VLANCTL_TAG; #endif /* * Map the segment array into descriptors. Note that we set the * start-of-frame and end-of-frame markers for either TX or RX, but * they really only have meaning in the TX case. (In the RX case, * it's the chip that tells us where packets begin and end.) * We also keep track of the end of the ring and set the * end-of-ring bits as needed, and we set the ownership bits * in all except the very first descriptor. (The caller will * set this descriptor later when it start transmission or * reception.) */ curidx = idx; cmdstat = RL_TDESC_CMD_SOF; for (seg = 0; seg < map->dm_nsegs; seg++) { d = &sc->rl_ldata.rl_tx_list[curidx]; RL_TXDESCSYNC(sc, curidx, BUS_DMASYNC_POSTWRITE); d->rl_vlanctl = htole32(vlanctl); re_set_bufaddr(d, map->dm_segs[seg].ds_addr); cmdstat |= csum_flags | map->dm_segs[seg].ds_len; if (curidx == sc->rl_ldata.rl_tx_desc_cnt - 1) cmdstat |= RL_TDESC_CMD_EOR; d->rl_cmdstat = htole32(cmdstat); RL_TXDESCSYNC(sc, curidx, BUS_DMASYNC_PREWRITE); lastidx = curidx; cmdstat = RL_TDESC_CMD_OWN; curidx = RL_NEXT_TX_DESC(sc, curidx); } if (pad) { d = &sc->rl_ldata.rl_tx_list[curidx]; RL_TXDESCSYNC(sc, curidx, BUS_DMASYNC_POSTWRITE); d->rl_vlanctl = htole32(vlanctl); re_set_bufaddr(d, RL_TXPADDADDR(sc)); cmdstat = csum_flags | RL_TDESC_CMD_OWN | RL_TDESC_CMD_EOF | (RL_IP4CSUMTX_PADLEN + 1 - m->m_pkthdr.len); if (curidx == sc->rl_ldata.rl_tx_desc_cnt - 1) cmdstat |= RL_TDESC_CMD_EOR; d->rl_cmdstat = htole32(cmdstat); RL_TXDESCSYNC(sc, curidx, BUS_DMASYNC_PREWRITE); lastidx = curidx; } /* d is already pointing at the last descriptor */ d->rl_cmdstat |= htole32(RL_TDESC_CMD_EOF); /* Transfer ownership of packet to the chip. */ d = &sc->rl_ldata.rl_tx_list[idx]; RL_TXDESCSYNC(sc, curidx, BUS_DMASYNC_POSTWRITE); d->rl_cmdstat |= htole32(RL_TDESC_CMD_OWN); RL_TXDESCSYNC(sc, curidx, BUS_DMASYNC_PREWRITE); /* update info of TX queue and descriptors */ txq->txq_mbuf = m; txq->txq_descidx = lastidx; return (nsegs); } void re_txstart(void *xsc) { struct rl_softc *sc = xsc; CSR_WRITE_1(sc, sc->rl_txstart, RL_TXSTART_START); } /* * Main transmit routine for C+ and gigE NICs. */ void re_start(struct ifqueue *ifq) { struct ifnet *ifp = ifq->ifq_if; struct rl_softc *sc = ifp->if_softc; struct mbuf *m; unsigned int idx; unsigned int free, used; int post = 0; if (!ISSET(sc->rl_flags, RL_FLAG_LINK)) { ifq_purge(ifq); return; } free = sc->rl_ldata.rl_txq_considx; idx = sc->rl_ldata.rl_txq_prodidx; if (free <= idx) free += sc->rl_ldata.rl_tx_desc_cnt; free -= idx; for (;;) { if (sc->rl_ldata.rl_tx_ndescs >= free + 2) { ifq_set_oactive(ifq); break; } m = ifq_dequeue(ifq); if (m == NULL) break; used = re_encap(sc, idx, m); if (used == 0) { m_freem(m); continue; } #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap_ether(ifp->if_bpf, m, BPF_DIRECTION_OUT); #endif KASSERT(used <= free); free -= used; idx += used; if (idx >= sc->rl_ldata.rl_tx_desc_cnt) idx -= sc->rl_ldata.rl_tx_desc_cnt; post = 1; } if (post == 0) return; ifp->if_timer = 5; sc->rl_ldata.rl_txq_prodidx = idx; ifq_serialize(ifq, &sc->rl_start); } int re_init(struct ifnet *ifp) { struct rl_softc *sc = ifp->if_softc; u_int16_t cfg; uint32_t rxcfg; int s; union { u_int32_t align_dummy; u_char eaddr[ETHER_ADDR_LEN]; } eaddr; s = splnet(); /* * Cancel pending I/O and free all RX/TX buffers. */ re_stop(ifp); /* Put controller into known state. */ re_reset(sc); /* * Enable C+ RX and TX mode, as well as VLAN stripping and * RX checksum offload. We must configure the C+ register * before all others. */ cfg = RL_CPLUSCMD_TXENB | RL_CPLUSCMD_PCI_MRW | RL_CPLUSCMD_RXCSUM_ENB; if (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) cfg |= RL_CPLUSCMD_VLANSTRIP; if (sc->rl_flags & RL_FLAG_MACSTAT) cfg |= RL_CPLUSCMD_MACSTAT_DIS; else cfg |= RL_CPLUSCMD_RXENB; CSR_WRITE_2(sc, RL_CPLUS_CMD, cfg); /* * Init our MAC address. Even though the chipset * documentation doesn't mention it, we need to enter "Config * register write enable" mode to modify the ID registers. */ bcopy(sc->sc_arpcom.ac_enaddr, eaddr.eaddr, ETHER_ADDR_LEN); CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_WRITECFG); CSR_WRITE_4(sc, RL_IDR4, htole32(*(u_int32_t *)(&eaddr.eaddr[4]))); CSR_WRITE_4(sc, RL_IDR0, htole32(*(u_int32_t *)(&eaddr.eaddr[0]))); /* * Default on PC Engines APU1 is to have all LEDs off unless * there is network activity. Override to provide a link status * LED. */ if (sc->sc_hwrev == RL_HWREV_8168E && hw_vendor != NULL && hw_prod != NULL && strcmp(hw_vendor, "PC Engines") == 0 && strcmp(hw_prod, "APU") == 0) { CSR_SETBIT_1(sc, RL_CFG4, RL_CFG4_CUSTOM_LED); CSR_WRITE_1(sc, RL_LEDSEL, RL_LED_LINK | RL_LED_ACT << 4); } /* * Protect config register again */ CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF); if ((sc->rl_flags & RL_FLAG_JUMBOV2) != 0) re_set_jumbo(sc); /* * For C+ mode, initialize the RX descriptors and mbufs. */ re_rx_list_init(sc); re_tx_list_init(sc); /* * Load the addresses of the RX and TX lists into the chip. */ CSR_WRITE_4(sc, RL_RXLIST_ADDR_HI, RL_ADDR_HI(sc->rl_ldata.rl_rx_list_map->dm_segs[0].ds_addr)); CSR_WRITE_4(sc, RL_RXLIST_ADDR_LO, RL_ADDR_LO(sc->rl_ldata.rl_rx_list_map->dm_segs[0].ds_addr)); CSR_WRITE_4(sc, RL_TXLIST_ADDR_HI, RL_ADDR_HI(sc->rl_ldata.rl_tx_list_map->dm_segs[0].ds_addr)); CSR_WRITE_4(sc, RL_TXLIST_ADDR_LO, RL_ADDR_LO(sc->rl_ldata.rl_tx_list_map->dm_segs[0].ds_addr)); if (sc->rl_flags & RL_FLAG_RXDV_GATED) CSR_WRITE_4(sc, RL_MISC, CSR_READ_4(sc, RL_MISC) & ~0x00080000); /* * Set the initial TX and RX configuration. */ CSR_WRITE_4(sc, RL_TXCFG, RL_TXCFG_CONFIG); CSR_WRITE_1(sc, RL_EARLY_TX_THRESH, 16); rxcfg = RL_RXCFG_CONFIG; if (sc->rl_flags & RL_FLAG_EARLYOFF) rxcfg |= RL_RXCFG_EARLYOFF; else if (sc->rl_flags & RL_FLAG_EARLYOFFV2) rxcfg |= RL_RXCFG_EARLYOFFV2; CSR_WRITE_4(sc, RL_RXCFG, rxcfg); /* * Enable transmit and receive. */ CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_TX_ENB | RL_CMD_RX_ENB); /* Program promiscuous mode and multicast filters. */ re_iff(sc); /* * Enable interrupts. */ re_setup_intr(sc, 1, sc->rl_imtype); CSR_WRITE_2(sc, RL_ISR, sc->rl_intrs); /* Start RX/TX process. */ CSR_WRITE_4(sc, RL_MISSEDPKT, 0); /* * For 8169 gigE NICs, set the max allowed RX packet * size so we can receive jumbo frames. */ if (sc->sc_hwrev != RL_HWREV_8139CPLUS) { if (sc->rl_flags & RL_FLAG_PCIE && (sc->rl_flags & RL_FLAG_JUMBOV2) == 0) CSR_WRITE_2(sc, RL_MAXRXPKTLEN, RE_RX_DESC_BUFLEN); else CSR_WRITE_2(sc, RL_MAXRXPKTLEN, 16383); } CSR_WRITE_1(sc, sc->rl_cfg1, CSR_READ_1(sc, sc->rl_cfg1) | RL_CFG1_DRVLOAD); ifp->if_flags |= IFF_RUNNING; ifq_clr_oactive(&ifp->if_snd); splx(s); sc->rl_flags &= ~RL_FLAG_LINK; mii_mediachg(&sc->sc_mii); timeout_add_sec(&sc->timer_handle, 1); return (0); } /* * Set media options. */ int re_ifmedia_upd(struct ifnet *ifp) { struct rl_softc *sc; sc = ifp->if_softc; return (mii_mediachg(&sc->sc_mii)); } /* * Report current media status. */ void re_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) { struct rl_softc *sc; sc = ifp->if_softc; mii_pollstat(&sc->sc_mii); ifmr->ifm_active = sc->sc_mii.mii_media_active; ifmr->ifm_status = sc->sc_mii.mii_media_status; } int re_ioctl(struct ifnet *ifp, u_long command, caddr_t data) { struct rl_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *) data; int s, error = 0; s = splnet(); switch(command) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; if (!(ifp->if_flags & IFF_RUNNING)) re_init(ifp); break; case SIOCSIFFLAGS: if (ifp->if_flags & IFF_UP) { if (ifp->if_flags & IFF_RUNNING) error = ENETRESET; else re_init(ifp); } else { if (ifp->if_flags & IFF_RUNNING) re_stop(ifp); } break; case SIOCGIFMEDIA: case SIOCSIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->sc_mii.mii_media, command); break; case SIOCGIFRXR: error = if_rxr_ioctl((struct if_rxrinfo *)ifr->ifr_data, NULL, RL_FRAMELEN(sc->rl_max_mtu), &sc->rl_ldata.rl_rx_ring); break; default: error = ether_ioctl(ifp, &sc->sc_arpcom, command, data); } if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) re_iff(sc); error = 0; } splx(s); return (error); } void re_watchdog(struct ifnet *ifp) { struct rl_softc *sc; int s; sc = ifp->if_softc; s = splnet(); printf("%s: watchdog timeout\n", sc->sc_dev.dv_xname); re_init(ifp); splx(s); } /* * Stop the adapter and free any mbufs allocated to the * RX and TX lists. */ void re_stop(struct ifnet *ifp) { struct rl_softc *sc; int i; sc = ifp->if_softc; ifp->if_timer = 0; sc->rl_flags &= ~RL_FLAG_LINK; sc->rl_timerintr = 0; timeout_del(&sc->timer_handle); ifp->if_flags &= ~IFF_RUNNING; /* * Disable accepting frames to put RX MAC into idle state. * Otherwise it's possible to get frames while stop command * execution is in progress and controller can DMA the frame * to already freed RX buffer during that period. */ CSR_WRITE_4(sc, RL_RXCFG, CSR_READ_4(sc, RL_RXCFG) & ~(RL_RXCFG_RX_ALLPHYS | RL_RXCFG_RX_BROAD | RL_RXCFG_RX_INDIV | RL_RXCFG_RX_MULTI)); if (sc->rl_flags & RL_FLAG_WAIT_TXPOLL) { for (i = RL_TIMEOUT; i > 0; i--) { if ((CSR_READ_1(sc, sc->rl_txstart) & RL_TXSTART_START) == 0) break; DELAY(20); } if (i == 0) printf("%s: stopping TX poll timed out!\n", sc->sc_dev.dv_xname); CSR_WRITE_1(sc, RL_COMMAND, 0x00); } else if (sc->rl_flags & RL_FLAG_CMDSTOP) { CSR_WRITE_1(sc, RL_COMMAND, RL_CMD_STOPREQ | RL_CMD_TX_ENB | RL_CMD_RX_ENB); if (sc->rl_flags & RL_FLAG_CMDSTOP_WAIT_TXQ) { for (i = RL_TIMEOUT; i > 0; i--) { if ((CSR_READ_4(sc, RL_TXCFG) & RL_TXCFG_QUEUE_EMPTY) != 0) break; DELAY(100); } if (i == 0) printf("%s: stopping TXQ timed out!\n", sc->sc_dev.dv_xname); } } else CSR_WRITE_1(sc, RL_COMMAND, 0x00); DELAY(1000); CSR_WRITE_2(sc, RL_IMR, 0x0000); CSR_WRITE_2(sc, RL_ISR, 0xFFFF); intr_barrier(sc->sc_ih); ifq_barrier(&ifp->if_snd); ifq_clr_oactive(&ifp->if_snd); mii_down(&sc->sc_mii); if (sc->rl_head != NULL) { m_freem(sc->rl_head); sc->rl_head = sc->rl_tail = NULL; } /* Free the TX list buffers. */ for (i = 0; i < sc->rl_ldata.rl_tx_desc_cnt; i++) { if (sc->rl_ldata.rl_txq[i].txq_mbuf != NULL) { bus_dmamap_unload(sc->sc_dmat, sc->rl_ldata.rl_txq[i].txq_dmamap); m_freem(sc->rl_ldata.rl_txq[i].txq_mbuf); sc->rl_ldata.rl_txq[i].txq_mbuf = NULL; } } /* Free the RX list buffers. */ for (i = 0; i < sc->rl_ldata.rl_rx_desc_cnt; i++) { if (sc->rl_ldata.rl_rxsoft[i].rxs_mbuf != NULL) { bus_dmamap_unload(sc->sc_dmat, sc->rl_ldata.rl_rxsoft[i].rxs_dmamap); m_freem(sc->rl_ldata.rl_rxsoft[i].rxs_mbuf); sc->rl_ldata.rl_rxsoft[i].rxs_mbuf = NULL; } } } void re_setup_hw_im(struct rl_softc *sc) { KASSERT(sc->rl_flags & RL_FLAG_HWIM); /* * Interrupt moderation * * 0xABCD * A - unknown (maybe TX related) * B - TX timer (unit: 25us) * C - unknown (maybe RX related) * D - RX timer (unit: 25us) * * * re(4)'s interrupt moderation is actually controlled by * two variables, like most other NICs (bge, bnx etc.) * o timer * o number of packets [P] * * The logic relationship between these two variables is * similar to other NICs too: * if (timer expire || packets > [P]) * Interrupt is delivered * * Currently we only know how to set 'timer', but not * 'number of packets', which should be ~30, as far as I * tested (sink ~900Kpps, interrupt rate is 30KHz) */ CSR_WRITE_2(sc, RL_IM, RL_IM_RXTIME(sc->rl_rx_time) | RL_IM_TXTIME(sc->rl_tx_time) | RL_IM_MAGIC); } void re_disable_hw_im(struct rl_softc *sc) { if (sc->rl_flags & RL_FLAG_HWIM) CSR_WRITE_2(sc, RL_IM, 0); } void re_setup_sim_im(struct rl_softc *sc) { if (sc->sc_hwrev == RL_HWREV_8139CPLUS) CSR_WRITE_4(sc, RL_TIMERINT, 0x400); /* XXX */ else { u_int32_t nticks; /* * Datasheet says tick decreases at bus speed, * but it seems the clock runs a little bit * faster, so we do some compensation here. */ nticks = (sc->rl_sim_time * sc->rl_bus_speed * 8) / 5; CSR_WRITE_4(sc, RL_TIMERINT_8169, nticks); } CSR_WRITE_4(sc, RL_TIMERCNT, 1); /* reload */ sc->rl_timerintr = 1; } void re_disable_sim_im(struct rl_softc *sc) { if (sc->sc_hwrev == RL_HWREV_8139CPLUS) CSR_WRITE_4(sc, RL_TIMERINT, 0); else CSR_WRITE_4(sc, RL_TIMERINT_8169, 0); sc->rl_timerintr = 0; } void re_config_imtype(struct rl_softc *sc, int imtype) { switch (imtype) { case RL_IMTYPE_HW: KASSERT(sc->rl_flags & RL_FLAG_HWIM); /* FALLTHROUGH */ case RL_IMTYPE_NONE: sc->rl_intrs = RL_INTRS_CPLUS; sc->rl_rx_ack = RL_ISR_RX_OK | RL_ISR_FIFO_OFLOW | RL_ISR_RX_OVERRUN; sc->rl_tx_ack = RL_ISR_TX_OK; break; case RL_IMTYPE_SIM: sc->rl_intrs = RL_INTRS_TIMER; sc->rl_rx_ack = RL_ISR_TIMEOUT_EXPIRED; sc->rl_tx_ack = RL_ISR_TIMEOUT_EXPIRED; break; default: panic("%s: unknown imtype %d", sc->sc_dev.dv_xname, imtype); } } void re_set_jumbo(struct rl_softc *sc) { CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_WRITECFG); CSR_WRITE_1(sc, RL_CFG3, CSR_READ_1(sc, RL_CFG3) | RL_CFG3_JUMBO_EN0); switch (sc->sc_hwrev) { case RL_HWREV_8168DP: break; case RL_HWREV_8168E: CSR_WRITE_1(sc, RL_CFG4, CSR_READ_1(sc, RL_CFG4) | RL_CFG4_8168E_JUMBO_EN1); break; default: CSR_WRITE_1(sc, RL_CFG4, CSR_READ_1(sc, RL_CFG4) | RL_CFG4_JUMBO_EN1); break; } CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF); } void re_setup_intr(struct rl_softc *sc, int enable_intrs, int imtype) { re_config_imtype(sc, imtype); if (enable_intrs) CSR_WRITE_2(sc, RL_IMR, sc->rl_intrs); else CSR_WRITE_2(sc, RL_IMR, 0); switch (imtype) { case RL_IMTYPE_NONE: re_disable_sim_im(sc); re_disable_hw_im(sc); break; case RL_IMTYPE_HW: KASSERT(sc->rl_flags & RL_FLAG_HWIM); re_disable_sim_im(sc); re_setup_hw_im(sc); break; case RL_IMTYPE_SIM: re_disable_hw_im(sc); re_setup_sim_im(sc); break; default: panic("%s: unknown imtype %d", sc->sc_dev.dv_xname, imtype); } } #ifndef SMALL_KERNEL int re_wol(struct ifnet *ifp, int enable) { struct rl_softc *sc = ifp->if_softc; u_int8_t val; if (enable) { if ((CSR_READ_1(sc, sc->rl_cfg1) & RL_CFG1_PME) == 0) { printf("%s: power management is disabled, " "cannot do WOL\n", sc->sc_dev.dv_xname); return (ENOTSUP); } if ((CSR_READ_1(sc, sc->rl_cfg2) & RL_CFG2_AUXPWR) == 0) printf("%s: no auxiliary power, cannot do WOL from D3 " "(power-off) state\n", sc->sc_dev.dv_xname); } re_iff(sc); /* Temporarily enable write to configuration registers. */ CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_WRITECFG); /* Always disable all wake events except magic packet. */ if (enable) { val = CSR_READ_1(sc, sc->rl_cfg5); val &= ~(RL_CFG5_WOL_UCAST | RL_CFG5_WOL_MCAST | RL_CFG5_WOL_BCAST); CSR_WRITE_1(sc, sc->rl_cfg5, val); val = CSR_READ_1(sc, sc->rl_cfg3); val |= RL_CFG3_WOL_MAGIC; val &= ~RL_CFG3_WOL_LINK; CSR_WRITE_1(sc, sc->rl_cfg3, val); } else { val = CSR_READ_1(sc, sc->rl_cfg5); val &= ~(RL_CFG5_WOL_UCAST | RL_CFG5_WOL_MCAST | RL_CFG5_WOL_BCAST); CSR_WRITE_1(sc, sc->rl_cfg5, val); val = CSR_READ_1(sc, sc->rl_cfg3); val &= ~(RL_CFG3_WOL_MAGIC | RL_CFG3_WOL_LINK); CSR_WRITE_1(sc, sc->rl_cfg3, val); } CSR_WRITE_1(sc, RL_EECMD, RL_EEMODE_OFF); return (0); } #endif