/* $NetBSD: if_et.c,v 1.14.8.4 2019/10/17 18:36:44 martin Exp $ */ /* $OpenBSD: if_et.c,v 1.12 2008/07/11 09:29:02 kevlo $ */ /* * Copyright (c) 2007 The DragonFly Project. All rights reserved. * * This code is derived from software contributed to The DragonFly Project * by Sepherosa Ziehau * * 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. Neither the name of The DragonFly Project nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific, prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 THE * COPYRIGHT HOLDERS OR CONTRIBUTORS 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. * * $DragonFly: src/sys/dev/netif/et/if_et.c,v 1.1 2007/10/12 14:12:42 sephe Exp $ */ #include __KERNEL_RCSID(0, "$NetBSD: if_et.c,v 1.14.8.4 2019/10/17 18:36:44 martin Exp $"); #include "opt_inet.h" #include "vlan.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #include #endif #include #include #include #include #include #include #include int et_match(device_t, cfdata_t, void *); void et_attach(device_t, device_t, void *); int et_detach(device_t, int); int et_shutdown(device_t); int et_miibus_readreg(device_t, int, int); void et_miibus_writereg(device_t, int, int, int); void et_miibus_statchg(struct ifnet *); int et_init(struct ifnet *); int et_ioctl(struct ifnet *, u_long, void *); void et_start(struct ifnet *); void et_watchdog(struct ifnet *); static int et_ifmedia_upd(struct ifnet *); static void et_ifmedia_sts(struct ifnet *, struct ifmediareq *); int et_intr(void *); void et_enable_intrs(struct et_softc *, uint32_t); void et_disable_intrs(struct et_softc *); void et_rxeof(struct et_softc *); void et_txeof(struct et_softc *); void et_txtick(void *); int et_dma_alloc(struct et_softc *); void et_dma_free(struct et_softc *); int et_dma_mem_create(struct et_softc *, bus_size_t, void **, bus_addr_t *, bus_dmamap_t *, bus_dma_segment_t *); void et_dma_mem_destroy(struct et_softc *, void *, bus_dmamap_t); int et_dma_mbuf_create(struct et_softc *); void et_dma_mbuf_destroy(struct et_softc *, int, const int[]); int et_init_tx_ring(struct et_softc *); int et_init_rx_ring(struct et_softc *); void et_free_tx_ring(struct et_softc *); void et_free_rx_ring(struct et_softc *); int et_encap(struct et_softc *, struct mbuf **); int et_newbuf(struct et_rxbuf_data *, int, int, int); int et_newbuf_cluster(struct et_rxbuf_data *, int, int); int et_newbuf_hdr(struct et_rxbuf_data *, int, int); void et_stop(struct et_softc *); int et_chip_init(struct et_softc *); void et_chip_attach(struct et_softc *); void et_init_mac(struct et_softc *); void et_init_rxmac(struct et_softc *); void et_init_txmac(struct et_softc *); int et_init_rxdma(struct et_softc *); int et_init_txdma(struct et_softc *); int et_start_rxdma(struct et_softc *); int et_start_txdma(struct et_softc *); int et_stop_rxdma(struct et_softc *); int et_stop_txdma(struct et_softc *); void et_reset(struct et_softc *); int et_bus_config(struct et_softc *); void et_get_eaddr(struct et_softc *, uint8_t[]); void et_setmulti(struct et_softc *); void et_tick(void *); static int et_rx_intr_npkts = 32; static int et_rx_intr_delay = 20; /* x10 usec */ static int et_tx_intr_nsegs = 128; static uint32_t et_timer = 1000 * 1000 * 1000; /* nanosec */ struct et_bsize { int bufsize; et_newbuf_t newbuf; }; static const struct et_bsize et_bufsize[ET_RX_NRING] = { { .bufsize = 0, .newbuf = et_newbuf_hdr }, { .bufsize = 0, .newbuf = et_newbuf_cluster }, }; const struct et_product { pci_vendor_id_t vendor; pci_product_id_t product; } et_devices[] = { { PCI_VENDOR_LUCENT, PCI_PRODUCT_LUCENT_ET1310 }, { PCI_VENDOR_LUCENT, PCI_PRODUCT_LUCENT_ET1301 } }; CFATTACH_DECL_NEW(et, sizeof(struct et_softc), et_match, et_attach, et_detach, NULL); int et_match(device_t dev, cfdata_t match, void *aux) { struct pci_attach_args *pa = aux; const struct et_product *ep; int i; for (i = 0; i < __arraycount(et_devices); i++) { ep = &et_devices[i]; if (PCI_VENDOR(pa->pa_id) == ep->vendor && PCI_PRODUCT(pa->pa_id) == ep->product) return 1; } return 0; } void et_attach(device_t parent, device_t self, void *aux) { struct et_softc *sc = device_private(self); struct pci_attach_args *pa = aux; pci_chipset_tag_t pc = pa->pa_pc; pci_intr_handle_t ih; const char *intrstr; struct ifnet *ifp = &sc->sc_ethercom.ec_if; struct mii_data * const mii = &sc->sc_miibus; uint32_t pmcfg; pcireg_t memtype; int error; char intrbuf[PCI_INTRSTR_LEN]; pci_aprint_devinfo(pa, "Ethernet controller"); sc->sc_dev = self; /* * Initialize tunables */ sc->sc_rx_intr_npkts = et_rx_intr_npkts; sc->sc_rx_intr_delay = et_rx_intr_delay; sc->sc_tx_intr_nsegs = et_tx_intr_nsegs; sc->sc_timer = et_timer; memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, ET_PCIR_BAR); if (pci_mapreg_map(pa, ET_PCIR_BAR, memtype, 0, &sc->sc_mem_bt, &sc->sc_mem_bh, NULL, &sc->sc_mem_size)) { aprint_error_dev(self, "could not map mem space\n"); return; } if (pci_intr_map(pa, &ih) != 0) { aprint_error_dev(self, "could not map interrupt\n"); goto fail; } intrstr = pci_intr_string(pc, ih, intrbuf, sizeof(intrbuf)); sc->sc_irq_handle = pci_intr_establish(pc, ih, IPL_NET, et_intr, sc); if (sc->sc_irq_handle == NULL) { aprint_error_dev(self, "could not establish interrupt"); if (intrstr != NULL) aprint_error(" at %s", intrstr); aprint_error("\n"); goto fail; } aprint_normal_dev(self, "interrupting at %s\n", intrstr); sc->sc_dmat = pa->pa_dmat; sc->sc_pct = pa->pa_pc; sc->sc_pcitag = pa->pa_tag; if (pa->pa_id == PCI_PRODUCT_LUCENT_ET1301) sc->sc_flags |= ET_FLAG_FASTETHER; error = et_bus_config(sc); if (error) goto fail; et_get_eaddr(sc, sc->sc_enaddr); aprint_normal_dev(self, "Ethernet address %s\n", ether_sprintf(sc->sc_enaddr)); /* Take PHY out of COMA and enable clocks. */ pmcfg = ET_PM_SYSCLK_GATE | ET_PM_TXCLK_GATE | ET_PM_RXCLK_GATE; if ((sc->sc_flags & ET_FLAG_FASTETHER) == 0) pmcfg |= EM_PM_GIGEPHY_ENB; CSR_WRITE_4(sc, ET_PM, pmcfg); et_reset(sc); et_disable_intrs(sc); error = et_dma_alloc(sc); if (error) goto fail; ifp->if_softc = sc; ifp->if_mtu = ETHERMTU; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_init = et_init; ifp->if_ioctl = et_ioctl; ifp->if_start = et_start; ifp->if_watchdog = et_watchdog; IFQ_SET_MAXLEN(&ifp->if_snd, ET_TX_NDESC); IFQ_SET_READY(&ifp->if_snd); strlcpy(ifp->if_xname, device_xname(self), IFNAMSIZ); et_chip_attach(sc); mii->mii_ifp = ifp; mii->mii_readreg = et_miibus_readreg; mii->mii_writereg = et_miibus_writereg; mii->mii_statchg = et_miibus_statchg; sc->sc_ethercom.ec_mii = mii; ifmedia_init(&mii->mii_media, 0, et_ifmedia_upd, et_ifmedia_sts); mii_attach(self, mii, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); if (LIST_FIRST(&mii->mii_phys) == NULL) { aprint_error_dev(self, "no PHY found!\n"); ifmedia_add(&mii->mii_media, IFM_ETHER | IFM_MANUAL, 0, NULL); ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_MANUAL); } else ifmedia_set(&mii->mii_media, IFM_ETHER | IFM_AUTO); if_attach(ifp); if_deferred_start_init(ifp, NULL); ether_ifattach(ifp, sc->sc_enaddr); callout_init(&sc->sc_tick, 0); callout_setfunc(&sc->sc_tick, et_tick, sc); callout_init(&sc->sc_txtick, 0); callout_setfunc(&sc->sc_txtick, et_txtick, sc); if (pmf_device_register(self, NULL, NULL)) pmf_class_network_register(self, ifp); else aprint_error_dev(self, "couldn't establish power handler\n"); return; fail: et_dma_free(sc); if (sc->sc_irq_handle != NULL) { pci_intr_disestablish(sc->sc_pct, sc->sc_irq_handle); sc->sc_irq_handle = NULL; } if (sc->sc_mem_size) { bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, sc->sc_mem_size); sc->sc_mem_size = 0; } } int et_detach(device_t self, int flags) { struct et_softc *sc = device_private(self); struct ifnet *ifp = &sc->sc_ethercom.ec_if; int s; pmf_device_deregister(self); s = splnet(); et_stop(sc); splx(s); mii_detach(&sc->sc_miibus, MII_PHY_ANY, MII_OFFSET_ANY); /* Delete all remaining media. */ ifmedia_delete_instance(&sc->sc_miibus.mii_media, IFM_INST_ANY); ether_ifdetach(ifp); if_detach(ifp); et_dma_free(sc); if (sc->sc_irq_handle != NULL) { pci_intr_disestablish(sc->sc_pct, sc->sc_irq_handle); sc->sc_irq_handle = NULL; } if (sc->sc_mem_size) { bus_space_unmap(sc->sc_mem_bt, sc->sc_mem_bh, sc->sc_mem_size); sc->sc_mem_size = 0; } return 0; } int et_shutdown(device_t self) { struct et_softc *sc = device_private(self); int s; s = splnet(); et_stop(sc); splx(s); return 0; } int et_miibus_readreg(device_t dev, int phy, int reg) { struct et_softc *sc = device_private(dev); uint32_t val; int i, ret; /* Stop any pending operations */ CSR_WRITE_4(sc, ET_MII_CMD, 0); val = __SHIFTIN(phy, ET_MII_ADDR_PHY) | __SHIFTIN(reg, ET_MII_ADDR_REG); CSR_WRITE_4(sc, ET_MII_ADDR, val); /* Start reading */ CSR_WRITE_4(sc, ET_MII_CMD, ET_MII_CMD_READ); #define NRETRY 50 for (i = 0; i < NRETRY; ++i) { val = CSR_READ_4(sc, ET_MII_IND); if ((val & (ET_MII_IND_BUSY | ET_MII_IND_INVALID)) == 0) break; DELAY(50); } if (i == NRETRY) { aprint_error_dev(sc->sc_dev, "read phy %d, reg %d timed out\n", phy, reg); ret = 0; goto back; } #undef NRETRY val = CSR_READ_4(sc, ET_MII_STAT); ret = __SHIFTOUT(val, ET_MII_STAT_VALUE); back: /* Make sure that the current operation is stopped */ CSR_WRITE_4(sc, ET_MII_CMD, 0); return ret; } void et_miibus_writereg(device_t dev, int phy, int reg, int val0) { struct et_softc *sc = device_private(dev); uint32_t val; int i; /* Stop any pending operations */ CSR_WRITE_4(sc, ET_MII_CMD, 0); val = __SHIFTIN(phy, ET_MII_ADDR_PHY) | __SHIFTIN(reg, ET_MII_ADDR_REG); CSR_WRITE_4(sc, ET_MII_ADDR, val); /* Start writing */ CSR_WRITE_4(sc, ET_MII_CTRL, __SHIFTIN(val0, ET_MII_CTRL_VALUE)); #define NRETRY 100 for (i = 0; i < NRETRY; ++i) { val = CSR_READ_4(sc, ET_MII_IND); if ((val & ET_MII_IND_BUSY) == 0) break; DELAY(50); } if (i == NRETRY) { aprint_error_dev(sc->sc_dev, "write phy %d, reg %d timed out\n", phy, reg); et_miibus_readreg(dev, phy, reg); } #undef NRETRY /* Make sure that the current operation is stopped */ CSR_WRITE_4(sc, ET_MII_CMD, 0); } void et_miibus_statchg(struct ifnet *ifp) { struct et_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->sc_miibus; uint32_t cfg1, cfg2, ctrl; int i; sc->sc_flags &= ~ET_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->sc_flags |= ET_FLAG_LINK; break; case IFM_1000_T: if ((sc->sc_flags & ET_FLAG_FASTETHER) == 0) sc->sc_flags |= ET_FLAG_LINK; break; } } /* XXX Stop TX/RX MAC? */ if ((sc->sc_flags & ET_FLAG_LINK) == 0) return; /* Program MACs with resolved speed/duplex/flow-control. */ ctrl = CSR_READ_4(sc, ET_MAC_CTRL); ctrl &= ~(ET_MAC_CTRL_GHDX | ET_MAC_CTRL_MODE_MII); cfg1 = CSR_READ_4(sc, ET_MAC_CFG1); cfg1 &= ~(ET_MAC_CFG1_TXFLOW | ET_MAC_CFG1_RXFLOW | ET_MAC_CFG1_LOOPBACK); cfg2 = CSR_READ_4(sc, ET_MAC_CFG2); cfg2 &= ~(ET_MAC_CFG2_MODE_MII | ET_MAC_CFG2_MODE_GMII | ET_MAC_CFG2_FDX | ET_MAC_CFG2_BIGFRM); cfg2 |= ET_MAC_CFG2_LENCHK | ET_MAC_CFG2_CRC | ET_MAC_CFG2_PADCRC | __SHIFTIN(7, ET_MAC_CFG2_PREAMBLE_LEN); if (IFM_SUBTYPE(mii->mii_media_active) == IFM_1000_T) cfg2 |= ET_MAC_CFG2_MODE_GMII; else { cfg2 |= ET_MAC_CFG2_MODE_MII; ctrl |= ET_MAC_CTRL_MODE_MII; } if (IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) { cfg2 |= ET_MAC_CFG2_FDX; /* * Controller lacks automatic TX pause frame * generation so it should be handled by driver. * Even though driver can send pause frame with * arbitrary pause time, controller does not * provide a way that tells how many free RX * buffers are available in controller. This * limitation makes it hard to generate XON frame * in time on driver side so don't enable TX flow * control. */ #ifdef notyet if (IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) cfg1 |= ET_MAC_CFG1_TXFLOW; #endif if (IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) cfg1 |= ET_MAC_CFG1_RXFLOW; } else ctrl |= ET_MAC_CTRL_GHDX; CSR_WRITE_4(sc, ET_MAC_CTRL, ctrl); CSR_WRITE_4(sc, ET_MAC_CFG2, cfg2); cfg1 |= ET_MAC_CFG1_TXEN | ET_MAC_CFG1_RXEN; CSR_WRITE_4(sc, ET_MAC_CFG1, cfg1); #define NRETRY 100 for (i = 0; i < NRETRY; ++i) { cfg1 = CSR_READ_4(sc, ET_MAC_CFG1); if ((cfg1 & (ET_MAC_CFG1_SYNC_TXEN | ET_MAC_CFG1_SYNC_RXEN)) == (ET_MAC_CFG1_SYNC_TXEN | ET_MAC_CFG1_SYNC_RXEN)) break; DELAY(10); } /* Note: Timeout always happens when cable is not plugged in. */ sc->sc_flags |= ET_FLAG_TXRX_ENABLED; #undef NRETRY } static int et_ifmedia_upd(struct ifnet *ifp) { struct et_softc *sc; struct mii_data *mii; struct mii_softc *miisc; sc = ifp->if_softc; mii = &sc->sc_miibus; LIST_FOREACH(miisc, &mii->mii_phys, mii_list) PHY_RESET(miisc); return (mii_mediachg(mii)); } static void et_ifmedia_sts(struct ifnet *ifp, struct ifmediareq *ifmr) { struct et_softc *sc; struct mii_data *mii; sc = ifp->if_softc; mii = &sc->sc_miibus; mii_pollstat(mii); ifmr->ifm_active = mii->mii_media_active; ifmr->ifm_status = mii->mii_media_status; } void et_stop(struct et_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; callout_stop(&sc->sc_tick); callout_stop(&sc->sc_txtick); et_stop_rxdma(sc); et_stop_txdma(sc); et_disable_intrs(sc); et_free_tx_ring(sc); et_free_rx_ring(sc); et_reset(sc); sc->sc_tx = 0; sc->sc_tx_intr = 0; sc->sc_flags &= ~ET_FLAG_TXRX_ENABLED; ifp->if_timer = 0; ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); } int et_bus_config(struct et_softc *sc) { uint32_t val; //, max_plsz; // uint16_t ack_latency, replay_timer; /* * Test whether EEPROM is valid * NOTE: Read twice to get the correct value */ pci_conf_read(sc->sc_pct, sc->sc_pcitag, ET_PCIR_EEPROM_MISC); val = pci_conf_read(sc->sc_pct, sc->sc_pcitag, ET_PCIR_EEPROM_MISC); if (val & ET_PCIM_EEPROM_STATUS_ERROR) { aprint_error_dev(sc->sc_dev, "EEPROM status error 0x%02x\n", val); return ENXIO; } /* TODO: LED */ #if 0 /* * Configure ACK latency and replay timer according to * max playload size */ val = pci_conf_read(sc->sc_pct, sc->sc_pcitag, ET_PCIR_DEVICE_CAPS); max_plsz = val & ET_PCIM_DEVICE_CAPS_MAX_PLSZ; switch (max_plsz) { case ET_PCIV_DEVICE_CAPS_PLSZ_128: ack_latency = ET_PCIV_ACK_LATENCY_128; replay_timer = ET_PCIV_REPLAY_TIMER_128; break; case ET_PCIV_DEVICE_CAPS_PLSZ_256: ack_latency = ET_PCIV_ACK_LATENCY_256; replay_timer = ET_PCIV_REPLAY_TIMER_256; break; default: ack_latency = pci_conf_read(sc->sc_pct, sc->sc_pcitag, ET_PCIR_ACK_LATENCY) >> 16; replay_timer = pci_conf_read(sc->sc_pct, sc->sc_pcitag, ET_PCIR_REPLAY_TIMER) >> 16; aprint_normal_dev(sc->sc_dev, "ack latency %u, replay timer %u\n", ack_latency, replay_timer); break; } if (ack_latency != 0) { pci_conf_write(sc->sc_pct, sc->sc_pcitag, ET_PCIR_ACK_LATENCY, ack_latency << 16); pci_conf_write(sc->sc_pct, sc->sc_pcitag, ET_PCIR_REPLAY_TIMER, replay_timer << 16); } /* * Set L0s and L1 latency timer to 2us */ val = ET_PCIV_L0S_LATENCY(2) | ET_PCIV_L1_LATENCY(2); pci_conf_write(sc->sc_pct, sc->sc_pcitag, ET_PCIR_L0S_L1_LATENCY, val << 24); /* * Set max read request size to 2048 bytes */ val = pci_conf_read(sc->sc_pct, sc->sc_pcitag, ET_PCIR_DEVICE_CTRL) >> 16; val &= ~ET_PCIM_DEVICE_CTRL_MAX_RRSZ; val |= ET_PCIV_DEVICE_CTRL_RRSZ_2K; pci_conf_write(sc->sc_pct, sc->sc_pcitag, ET_PCIR_DEVICE_CTRL, val << 16); #endif return 0; } void et_get_eaddr(struct et_softc *sc, uint8_t eaddr[]) { uint32_t r; r = pci_conf_read(sc->sc_pct, sc->sc_pcitag, ET_PCIR_MACADDR_LO); eaddr[0] = r & 0xff; eaddr[1] = (r >> 8) & 0xff; eaddr[2] = (r >> 16) & 0xff; eaddr[3] = (r >> 24) & 0xff; r = pci_conf_read(sc->sc_pct, sc->sc_pcitag, ET_PCIR_MACADDR_HI); eaddr[4] = r & 0xff; eaddr[5] = (r >> 8) & 0xff; } void et_reset(struct et_softc *sc) { CSR_WRITE_4(sc, ET_MAC_CFG1, ET_MAC_CFG1_RST_TXFUNC | ET_MAC_CFG1_RST_RXFUNC | ET_MAC_CFG1_RST_TXMC | ET_MAC_CFG1_RST_RXMC | ET_MAC_CFG1_SIM_RST | ET_MAC_CFG1_SOFT_RST); CSR_WRITE_4(sc, ET_SWRST, ET_SWRST_TXDMA | ET_SWRST_RXDMA | ET_SWRST_TXMAC | ET_SWRST_RXMAC | ET_SWRST_MAC | ET_SWRST_MAC_STAT | ET_SWRST_MMC); CSR_WRITE_4(sc, ET_MAC_CFG1, ET_MAC_CFG1_RST_TXFUNC | ET_MAC_CFG1_RST_RXFUNC | ET_MAC_CFG1_RST_TXMC | ET_MAC_CFG1_RST_RXMC); CSR_WRITE_4(sc, ET_MAC_CFG1, 0); } void et_disable_intrs(struct et_softc *sc) { CSR_WRITE_4(sc, ET_INTR_MASK, 0xffffffff); } void et_enable_intrs(struct et_softc *sc, uint32_t intrs) { CSR_WRITE_4(sc, ET_INTR_MASK, ~intrs); } int et_dma_alloc(struct et_softc *sc) { struct et_txdesc_ring *tx_ring = &sc->sc_tx_ring; struct et_txstatus_data *txsd = &sc->sc_tx_status; struct et_rxstat_ring *rxst_ring = &sc->sc_rxstat_ring; struct et_rxstatus_data *rxsd = &sc->sc_rx_status; int i, error; /* * Create TX ring DMA stuffs */ error = et_dma_mem_create(sc, ET_TX_RING_SIZE, (void **)&tx_ring->tr_desc, &tx_ring->tr_paddr, &tx_ring->tr_dmap, &tx_ring->tr_seg); if (error) { aprint_error_dev(sc->sc_dev, "can't create TX ring DMA stuffs\n"); return error; } /* * Create TX status DMA stuffs */ error = et_dma_mem_create(sc, sizeof(uint32_t), (void **)&txsd->txsd_status, &txsd->txsd_paddr, &txsd->txsd_dmap, &txsd->txsd_seg); if (error) { aprint_error_dev(sc->sc_dev, "can't create TX status DMA stuffs\n"); return error; } /* * Create DMA stuffs for RX rings */ for (i = 0; i < ET_RX_NRING; ++i) { static const uint32_t rx_ring_posreg[ET_RX_NRING] = { ET_RX_RING0_POS, ET_RX_RING1_POS }; struct et_rxdesc_ring *rx_ring = &sc->sc_rx_ring[i]; error = et_dma_mem_create(sc, ET_RX_RING_SIZE, (void **)&rx_ring->rr_desc, &rx_ring->rr_paddr, &rx_ring->rr_dmap, &rx_ring->rr_seg); if (error) { aprint_error_dev(sc->sc_dev, "can't create DMA stuffs for " "the %d RX ring\n", i); return error; } rx_ring->rr_posreg = rx_ring_posreg[i]; } /* * Create RX stat ring DMA stuffs */ error = et_dma_mem_create(sc, ET_RXSTAT_RING_SIZE, (void **)&rxst_ring->rsr_stat, &rxst_ring->rsr_paddr, &rxst_ring->rsr_dmap, &rxst_ring->rsr_seg); if (error) { aprint_error_dev(sc->sc_dev, "can't create RX stat ring DMA stuffs\n"); return error; } /* * Create RX status DMA stuffs */ error = et_dma_mem_create(sc, sizeof(struct et_rxstatus), (void **)&rxsd->rxsd_status, &rxsd->rxsd_paddr, &rxsd->rxsd_dmap, &rxsd->rxsd_seg); if (error) { aprint_error_dev(sc->sc_dev, "can't create RX status DMA stuffs\n"); return error; } /* * Create mbuf DMA stuffs */ error = et_dma_mbuf_create(sc); if (error) return error; return 0; } void et_dma_free(struct et_softc *sc) { struct et_txdesc_ring *tx_ring = &sc->sc_tx_ring; struct et_txstatus_data *txsd = &sc->sc_tx_status; struct et_rxstat_ring *rxst_ring = &sc->sc_rxstat_ring; struct et_rxstatus_data *rxsd = &sc->sc_rx_status; int i, rx_done[ET_RX_NRING]; /* * Destroy TX ring DMA stuffs */ et_dma_mem_destroy(sc, tx_ring->tr_desc, tx_ring->tr_dmap); /* * Destroy TX status DMA stuffs */ et_dma_mem_destroy(sc, txsd->txsd_status, txsd->txsd_dmap); /* * Destroy DMA stuffs for RX rings */ for (i = 0; i < ET_RX_NRING; ++i) { struct et_rxdesc_ring *rx_ring = &sc->sc_rx_ring[i]; et_dma_mem_destroy(sc, rx_ring->rr_desc, rx_ring->rr_dmap); } /* * Destroy RX stat ring DMA stuffs */ et_dma_mem_destroy(sc, rxst_ring->rsr_stat, rxst_ring->rsr_dmap); /* * Destroy RX status DMA stuffs */ et_dma_mem_destroy(sc, rxsd->rxsd_status, rxsd->rxsd_dmap); /* * Destroy mbuf DMA stuffs */ for (i = 0; i < ET_RX_NRING; ++i) rx_done[i] = ET_RX_NDESC; et_dma_mbuf_destroy(sc, ET_TX_NDESC, rx_done); } int et_dma_mbuf_create(struct et_softc *sc) { struct et_txbuf_data *tbd = &sc->sc_tx_data; int i, error, rx_done[ET_RX_NRING]; /* * Create spare DMA map for RX mbufs */ error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &sc->sc_mbuf_tmp_dmap); if (error) { aprint_error_dev(sc->sc_dev, "can't create spare mbuf DMA map\n"); return error; } /* * Create DMA maps for RX mbufs */ bzero(rx_done, sizeof(rx_done)); for (i = 0; i < ET_RX_NRING; ++i) { struct et_rxbuf_data *rbd = &sc->sc_rx_data[i]; int j; for (j = 0; j < ET_RX_NDESC; ++j) { error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &rbd->rbd_buf[j].rb_dmap); if (error) { aprint_error_dev(sc->sc_dev, "can't create %d RX mbuf " "for %d RX ring\n", j, i); rx_done[i] = j; et_dma_mbuf_destroy(sc, 0, rx_done); return error; } } rx_done[i] = ET_RX_NDESC; rbd->rbd_softc = sc; rbd->rbd_ring = &sc->sc_rx_ring[i]; } /* * Create DMA maps for TX mbufs */ for (i = 0; i < ET_TX_NDESC; ++i) { error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &tbd->tbd_buf[i].tb_dmap); if (error) { aprint_error_dev(sc->sc_dev, "can't create %d TX mbuf " "DMA map\n", i); et_dma_mbuf_destroy(sc, i, rx_done); return error; } } return 0; } void et_dma_mbuf_destroy(struct et_softc *sc, int tx_done, const int rx_done[]) { struct et_txbuf_data *tbd = &sc->sc_tx_data; int i; /* * Destroy DMA maps for RX mbufs */ for (i = 0; i < ET_RX_NRING; ++i) { struct et_rxbuf_data *rbd = &sc->sc_rx_data[i]; int j; for (j = 0; j < rx_done[i]; ++j) { struct et_rxbuf *rb = &rbd->rbd_buf[j]; KASSERTMSG(rb->rb_mbuf == NULL, "RX mbuf in %d RX ring is not freed yet\n", i); bus_dmamap_destroy(sc->sc_dmat, rb->rb_dmap); } } /* * Destroy DMA maps for TX mbufs */ for (i = 0; i < tx_done; ++i) { struct et_txbuf *tb = &tbd->tbd_buf[i]; KASSERTMSG(tb->tb_mbuf == NULL, "TX mbuf is not freed yet\n"); bus_dmamap_destroy(sc->sc_dmat, tb->tb_dmap); } /* * Destroy spare mbuf DMA map */ bus_dmamap_destroy(sc->sc_dmat, sc->sc_mbuf_tmp_dmap); } int et_dma_mem_create(struct et_softc *sc, bus_size_t size, void **addr, bus_addr_t *paddr, bus_dmamap_t *dmap, bus_dma_segment_t *seg) { int error, nsegs; error = bus_dmamap_create(sc->sc_dmat, size, 1, size, 0, BUS_DMA_NOWAIT, dmap); if (error) { aprint_error_dev(sc->sc_dev, "can't create DMA map\n"); return error; } error = bus_dmamem_alloc(sc->sc_dmat, size, ET_ALIGN, 0, seg, 1, &nsegs, BUS_DMA_WAITOK); if (error) { aprint_error_dev(sc->sc_dev, "can't allocate DMA mem\n"); return error; } error = bus_dmamem_map(sc->sc_dmat, seg, nsegs, size, (void **)addr, BUS_DMA_NOWAIT); if (error) { aprint_error_dev(sc->sc_dev, "can't map DMA mem\n"); return (error); } error = bus_dmamap_load(sc->sc_dmat, *dmap, *addr, size, NULL, BUS_DMA_WAITOK); if (error) { aprint_error_dev(sc->sc_dev, "can't load DMA mem\n"); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)addr, 1); return error; } memset(*addr, 0, size); *paddr = (*dmap)->dm_segs[0].ds_addr; return 0; } void et_dma_mem_destroy(struct et_softc *sc, void *addr, bus_dmamap_t dmap) { bus_dmamap_unload(sc->sc_dmat, dmap); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)&addr, 1); } void et_chip_attach(struct et_softc *sc) { uint32_t val; /* * Perform minimal initialization */ /* Disable loopback */ CSR_WRITE_4(sc, ET_LOOPBACK, 0); /* Reset MAC */ CSR_WRITE_4(sc, ET_MAC_CFG1, ET_MAC_CFG1_RST_TXFUNC | ET_MAC_CFG1_RST_RXFUNC | ET_MAC_CFG1_RST_TXMC | ET_MAC_CFG1_RST_RXMC | ET_MAC_CFG1_SIM_RST | ET_MAC_CFG1_SOFT_RST); /* * Setup half duplex mode */ val = __SHIFTIN(10, ET_MAC_HDX_ALT_BEB_TRUNC) | __SHIFTIN(15, ET_MAC_HDX_REXMIT_MAX) | __SHIFTIN(55, ET_MAC_HDX_COLLWIN) | ET_MAC_HDX_EXC_DEFER; CSR_WRITE_4(sc, ET_MAC_HDX, val); /* Clear MAC control */ CSR_WRITE_4(sc, ET_MAC_CTRL, 0); /* Reset MII */ CSR_WRITE_4(sc, ET_MII_CFG, ET_MII_CFG_CLKRST); /* Bring MAC out of reset state */ CSR_WRITE_4(sc, ET_MAC_CFG1, 0); /* Enable memory controllers */ CSR_WRITE_4(sc, ET_MMC_CTRL, ET_MMC_CTRL_ENABLE); } int et_intr(void *xsc) { struct et_softc *sc = xsc; struct ifnet *ifp = &sc->sc_ethercom.ec_if; uint32_t intrs; if ((ifp->if_flags & IFF_RUNNING) == 0) return (0); intrs = CSR_READ_4(sc, ET_INTR_STATUS); if (intrs == 0 || intrs == 0xffffffff) return (0); et_disable_intrs(sc); intrs &= ET_INTRS; if (intrs == 0) /* Not interested */ goto back; if (intrs & ET_INTR_RXEOF) et_rxeof(sc); if (intrs & (ET_INTR_TXEOF | ET_INTR_TIMER)) et_txeof(sc); if (intrs & ET_INTR_TIMER) CSR_WRITE_4(sc, ET_TIMER, sc->sc_timer); back: et_enable_intrs(sc, ET_INTRS); return (1); } int et_init(struct ifnet *ifp) { struct et_softc *sc = ifp->if_softc; int error, i, s; if (ifp->if_flags & IFF_RUNNING) return 0; s = splnet(); et_stop(sc); et_reset(sc); for (i = 0; i < ET_RX_NRING; ++i) { sc->sc_rx_data[i].rbd_bufsize = et_bufsize[i].bufsize; sc->sc_rx_data[i].rbd_newbuf = et_bufsize[i].newbuf; } error = et_init_tx_ring(sc); if (error) goto back; error = et_init_rx_ring(sc); if (error) goto back; error = et_chip_init(sc); if (error) goto back; error = et_start_rxdma(sc); if (error) goto back; error = et_start_txdma(sc); if (error) goto back; /* Enable interrupts. */ et_enable_intrs(sc, ET_INTRS); callout_schedule(&sc->sc_tick, hz); CSR_WRITE_4(sc, ET_TIMER, sc->sc_timer); ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; sc->sc_flags &= ~ET_FLAG_LINK; et_ifmedia_upd(ifp); back: if (error) et_stop(sc); splx(s); return (0); } int et_ioctl(struct ifnet *ifp, u_long cmd, void *data) { struct et_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *)data; int s, error = 0; s = splnet(); switch (cmd) { case SIOCSIFFLAGS: if ((error = ifioctl_common(ifp, cmd, data)) != 0) break; if (ifp->if_flags & IFF_UP) { /* * If only the PROMISC or ALLMULTI flag changes, then * don't do a full re-init of the chip, just update * the Rx filter. */ if ((ifp->if_flags & IFF_RUNNING) && ((ifp->if_flags ^ sc->sc_if_flags) & (IFF_ALLMULTI | IFF_PROMISC)) != 0) { et_setmulti(sc); } else { if (!(ifp->if_flags & IFF_RUNNING)) et_init(ifp); } } else { if (ifp->if_flags & IFF_RUNNING) et_stop(sc); } sc->sc_if_flags = ifp->if_flags; break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->sc_miibus.mii_media, cmd); break; default: error = ether_ioctl(ifp, cmd, data); if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) et_setmulti(sc); error = 0; } break; } splx(s); return error; } void et_start(struct ifnet *ifp) { struct et_softc *sc = ifp->if_softc; struct et_txbuf_data *tbd = &sc->sc_tx_data; int trans; struct mbuf *m; if (((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) || ((sc->sc_flags & (ET_FLAG_LINK | ET_FLAG_TXRX_ENABLED)) != (ET_FLAG_LINK | ET_FLAG_TXRX_ENABLED))) return; trans = 0; for (;;) { IFQ_DEQUEUE(&ifp->if_snd, m); if (m == NULL) break; if ((tbd->tbd_used + ET_NSEG_SPARE) > ET_TX_NDESC) { ifp->if_flags |= IFF_OACTIVE; break; } if (et_encap(sc, &m)) { ifp->if_oerrors++; ifp->if_flags |= IFF_OACTIVE; break; } trans = 1; bpf_mtap(ifp, m); } if (trans) { callout_schedule(&sc->sc_txtick, hz); ifp->if_timer = 5; } } void et_watchdog(struct ifnet *ifp) { struct et_softc *sc = ifp->if_softc; aprint_error_dev(sc->sc_dev, "watchdog timed out\n"); ifp->if_flags &= ~IFF_RUNNING; et_init(ifp); et_start(ifp); } int et_stop_rxdma(struct et_softc *sc) { CSR_WRITE_4(sc, ET_RXDMA_CTRL, ET_RXDMA_CTRL_HALT | ET_RXDMA_CTRL_RING1_ENABLE); DELAY(5); if ((CSR_READ_4(sc, ET_RXDMA_CTRL) & ET_RXDMA_CTRL_HALTED) == 0) { aprint_error_dev(sc->sc_dev, "can't stop RX DMA engine\n"); return ETIMEDOUT; } return 0; } int et_stop_txdma(struct et_softc *sc) { CSR_WRITE_4(sc, ET_TXDMA_CTRL, ET_TXDMA_CTRL_HALT | ET_TXDMA_CTRL_SINGLE_EPKT); return 0; } void et_free_tx_ring(struct et_softc *sc) { struct et_txbuf_data *tbd = &sc->sc_tx_data; struct et_txdesc_ring *tx_ring = &sc->sc_tx_ring; int i; for (i = 0; i < ET_TX_NDESC; ++i) { struct et_txbuf *tb = &tbd->tbd_buf[i]; if (tb->tb_mbuf != NULL) { bus_dmamap_unload(sc->sc_dmat, tb->tb_dmap); m_freem(tb->tb_mbuf); tb->tb_mbuf = NULL; } } bzero(tx_ring->tr_desc, ET_TX_RING_SIZE); bus_dmamap_sync(sc->sc_dmat, tx_ring->tr_dmap, 0, tx_ring->tr_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); } void et_free_rx_ring(struct et_softc *sc) { int n; for (n = 0; n < ET_RX_NRING; ++n) { struct et_rxbuf_data *rbd = &sc->sc_rx_data[n]; struct et_rxdesc_ring *rx_ring = &sc->sc_rx_ring[n]; int i; for (i = 0; i < ET_RX_NDESC; ++i) { struct et_rxbuf *rb = &rbd->rbd_buf[i]; if (rb->rb_mbuf != NULL) { bus_dmamap_unload(sc->sc_dmat, rb->rb_dmap); m_freem(rb->rb_mbuf); rb->rb_mbuf = NULL; } } bzero(rx_ring->rr_desc, ET_RX_RING_SIZE); bus_dmamap_sync(sc->sc_dmat, rx_ring->rr_dmap, 0, rx_ring->rr_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); } } void et_setmulti(struct et_softc *sc) { struct ethercom *ec = &sc->sc_ethercom; struct ifnet *ifp = &ec->ec_if; uint32_t hash[4] = { 0, 0, 0, 0 }; uint32_t rxmac_ctrl, pktfilt; struct ether_multi *enm; struct ether_multistep step; int i, count; pktfilt = CSR_READ_4(sc, ET_PKTFILT); rxmac_ctrl = CSR_READ_4(sc, ET_RXMAC_CTRL); pktfilt &= ~(ET_PKTFILT_BCAST | ET_PKTFILT_MCAST | ET_PKTFILT_UCAST); if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) { rxmac_ctrl |= ET_RXMAC_CTRL_NO_PKTFILT; goto back; } count = 0; ETHER_FIRST_MULTI(step, ec, enm); while (enm != NULL) { uint32_t *hp, h; h = ether_crc32_be(enm->enm_addrlo, ETHER_ADDR_LEN); h = (h & 0x3f800000) >> 23; hp = &hash[0]; if (h >= 32 && h < 64) { h -= 32; hp = &hash[1]; } else if (h >= 64 && h < 96) { h -= 64; hp = &hash[2]; } else if (h >= 96) { h -= 96; hp = &hash[3]; } *hp |= (1 << h); ++count; ETHER_NEXT_MULTI(step, enm); } for (i = 0; i < 4; ++i) CSR_WRITE_4(sc, ET_MULTI_HASH + (i * 4), hash[i]); if (count > 0) pktfilt |= ET_PKTFILT_MCAST; rxmac_ctrl &= ~ET_RXMAC_CTRL_NO_PKTFILT; back: CSR_WRITE_4(sc, ET_PKTFILT, pktfilt); CSR_WRITE_4(sc, ET_RXMAC_CTRL, rxmac_ctrl); } int et_chip_init(struct et_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; uint32_t rxq_end; int error; /* * Split internal memory between TX and RX according to MTU */ if (ifp->if_mtu < 2048) rxq_end = 0x2bc; else if (ifp->if_mtu < 8192) rxq_end = 0x1ff; else rxq_end = 0x1b3; CSR_WRITE_4(sc, ET_RXQ_START, 0); CSR_WRITE_4(sc, ET_RXQ_END, rxq_end); CSR_WRITE_4(sc, ET_TXQ_START, rxq_end + 1); CSR_WRITE_4(sc, ET_TXQ_END, ET_INTERN_MEM_END); /* No loopback */ CSR_WRITE_4(sc, ET_LOOPBACK, 0); /* Clear MSI configure */ CSR_WRITE_4(sc, ET_MSI_CFG, 0); /* Disable timer */ CSR_WRITE_4(sc, ET_TIMER, 0); /* Initialize MAC */ et_init_mac(sc); /* Enable memory controllers */ CSR_WRITE_4(sc, ET_MMC_CTRL, ET_MMC_CTRL_ENABLE); /* Initialize RX MAC */ et_init_rxmac(sc); /* Initialize TX MAC */ et_init_txmac(sc); /* Initialize RX DMA engine */ error = et_init_rxdma(sc); if (error) return error; /* Initialize TX DMA engine */ error = et_init_txdma(sc); if (error) return error; return 0; } int et_init_tx_ring(struct et_softc *sc) { struct et_txdesc_ring *tx_ring = &sc->sc_tx_ring; struct et_txstatus_data *txsd = &sc->sc_tx_status; struct et_txbuf_data *tbd = &sc->sc_tx_data; bzero(tx_ring->tr_desc, ET_TX_RING_SIZE); bus_dmamap_sync(sc->sc_dmat, tx_ring->tr_dmap, 0, tx_ring->tr_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); tbd->tbd_start_index = 0; tbd->tbd_start_wrap = 0; tbd->tbd_used = 0; bzero(txsd->txsd_status, sizeof(uint32_t)); bus_dmamap_sync(sc->sc_dmat, txsd->txsd_dmap, 0, txsd->txsd_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); return 0; } int et_init_rx_ring(struct et_softc *sc) { struct et_rxstatus_data *rxsd = &sc->sc_rx_status; struct et_rxstat_ring *rxst_ring = &sc->sc_rxstat_ring; int n; for (n = 0; n < ET_RX_NRING; ++n) { struct et_rxbuf_data *rbd = &sc->sc_rx_data[n]; int i, error; for (i = 0; i < ET_RX_NDESC; ++i) { error = rbd->rbd_newbuf(rbd, i, 1); if (error) { aprint_error_dev(sc->sc_dev, "%d ring %d buf, newbuf failed: " "%d\n", n, i, error); return error; } } } bzero(rxsd->rxsd_status, sizeof(struct et_rxstatus)); bus_dmamap_sync(sc->sc_dmat, rxsd->rxsd_dmap, 0, rxsd->rxsd_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); bzero(rxst_ring->rsr_stat, ET_RXSTAT_RING_SIZE); bus_dmamap_sync(sc->sc_dmat, rxst_ring->rsr_dmap, 0, rxst_ring->rsr_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); return 0; } int et_init_rxdma(struct et_softc *sc) { struct et_rxstatus_data *rxsd = &sc->sc_rx_status; struct et_rxstat_ring *rxst_ring = &sc->sc_rxstat_ring; struct et_rxdesc_ring *rx_ring; int error; error = et_stop_rxdma(sc); if (error) { aprint_error_dev(sc->sc_dev, "can't init RX DMA engine\n"); return error; } /* * Install RX status */ CSR_WRITE_4(sc, ET_RX_STATUS_HI, ET_ADDR_HI(rxsd->rxsd_paddr)); CSR_WRITE_4(sc, ET_RX_STATUS_LO, ET_ADDR_LO(rxsd->rxsd_paddr)); /* * Install RX stat ring */ CSR_WRITE_4(sc, ET_RXSTAT_HI, ET_ADDR_HI(rxst_ring->rsr_paddr)); CSR_WRITE_4(sc, ET_RXSTAT_LO, ET_ADDR_LO(rxst_ring->rsr_paddr)); CSR_WRITE_4(sc, ET_RXSTAT_CNT, ET_RX_NSTAT - 1); CSR_WRITE_4(sc, ET_RXSTAT_POS, 0); CSR_WRITE_4(sc, ET_RXSTAT_MINCNT, ((ET_RX_NSTAT * 15) / 100) - 1); /* Match ET_RXSTAT_POS */ rxst_ring->rsr_index = 0; rxst_ring->rsr_wrap = 0; /* * Install the 2nd RX descriptor ring */ rx_ring = &sc->sc_rx_ring[1]; CSR_WRITE_4(sc, ET_RX_RING1_HI, ET_ADDR_HI(rx_ring->rr_paddr)); CSR_WRITE_4(sc, ET_RX_RING1_LO, ET_ADDR_LO(rx_ring->rr_paddr)); CSR_WRITE_4(sc, ET_RX_RING1_CNT, ET_RX_NDESC - 1); CSR_WRITE_4(sc, ET_RX_RING1_POS, ET_RX_RING1_POS_WRAP); CSR_WRITE_4(sc, ET_RX_RING1_MINCNT, ((ET_RX_NDESC * 15) / 100) - 1); /* Match ET_RX_RING1_POS */ rx_ring->rr_index = 0; rx_ring->rr_wrap = 1; /* * Install the 1st RX descriptor ring */ rx_ring = &sc->sc_rx_ring[0]; CSR_WRITE_4(sc, ET_RX_RING0_HI, ET_ADDR_HI(rx_ring->rr_paddr)); CSR_WRITE_4(sc, ET_RX_RING0_LO, ET_ADDR_LO(rx_ring->rr_paddr)); CSR_WRITE_4(sc, ET_RX_RING0_CNT, ET_RX_NDESC - 1); CSR_WRITE_4(sc, ET_RX_RING0_POS, ET_RX_RING0_POS_WRAP); CSR_WRITE_4(sc, ET_RX_RING0_MINCNT, ((ET_RX_NDESC * 15) / 100) - 1); /* Match ET_RX_RING0_POS */ rx_ring->rr_index = 0; rx_ring->rr_wrap = 1; /* * RX intr moderation */ CSR_WRITE_4(sc, ET_RX_INTR_NPKTS, sc->sc_rx_intr_npkts); CSR_WRITE_4(sc, ET_RX_INTR_DELAY, sc->sc_rx_intr_delay); return 0; } int et_init_txdma(struct et_softc *sc) { struct et_txdesc_ring *tx_ring = &sc->sc_tx_ring; struct et_txstatus_data *txsd = &sc->sc_tx_status; int error; error = et_stop_txdma(sc); if (error) { aprint_error_dev(sc->sc_dev, "can't init TX DMA engine\n"); return error; } /* * Install TX descriptor ring */ CSR_WRITE_4(sc, ET_TX_RING_HI, ET_ADDR_HI(tx_ring->tr_paddr)); CSR_WRITE_4(sc, ET_TX_RING_LO, ET_ADDR_LO(tx_ring->tr_paddr)); CSR_WRITE_4(sc, ET_TX_RING_CNT, ET_TX_NDESC - 1); /* * Install TX status */ CSR_WRITE_4(sc, ET_TX_STATUS_HI, ET_ADDR_HI(txsd->txsd_paddr)); CSR_WRITE_4(sc, ET_TX_STATUS_LO, ET_ADDR_LO(txsd->txsd_paddr)); CSR_WRITE_4(sc, ET_TX_READY_POS, 0); /* Match ET_TX_READY_POS */ tx_ring->tr_ready_index = 0; tx_ring->tr_ready_wrap = 0; return 0; } void et_init_mac(struct et_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; const uint8_t *eaddr = CLLADDR(ifp->if_sadl); uint32_t val; /* Reset MAC */ CSR_WRITE_4(sc, ET_MAC_CFG1, ET_MAC_CFG1_RST_TXFUNC | ET_MAC_CFG1_RST_RXFUNC | ET_MAC_CFG1_RST_TXMC | ET_MAC_CFG1_RST_RXMC | ET_MAC_CFG1_SIM_RST | ET_MAC_CFG1_SOFT_RST); /* * Setup inter packet gap */ val = __SHIFTIN(56, ET_IPG_NONB2B_1) | __SHIFTIN(88, ET_IPG_NONB2B_2) | __SHIFTIN(80, ET_IPG_MINIFG) | __SHIFTIN(96, ET_IPG_B2B); CSR_WRITE_4(sc, ET_IPG, val); /* * Setup half duplex mode */ val = __SHIFTIN(10, ET_MAC_HDX_ALT_BEB_TRUNC) | __SHIFTIN(15, ET_MAC_HDX_REXMIT_MAX) | __SHIFTIN(55, ET_MAC_HDX_COLLWIN) | ET_MAC_HDX_EXC_DEFER; CSR_WRITE_4(sc, ET_MAC_HDX, val); /* Clear MAC control */ CSR_WRITE_4(sc, ET_MAC_CTRL, 0); /* Reset MII */ CSR_WRITE_4(sc, ET_MII_CFG, ET_MII_CFG_CLKRST); /* * Set MAC address */ val = eaddr[2] | (eaddr[3] << 8) | (eaddr[4] << 16) | (eaddr[5] << 24); CSR_WRITE_4(sc, ET_MAC_ADDR1, val); val = (eaddr[0] << 16) | (eaddr[1] << 24); CSR_WRITE_4(sc, ET_MAC_ADDR2, val); /* Set max frame length */ CSR_WRITE_4(sc, ET_MAX_FRMLEN, ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN + ifp->if_mtu + ETHER_CRC_LEN); /* Bring MAC out of reset state */ CSR_WRITE_4(sc, ET_MAC_CFG1, 0); } void et_init_rxmac(struct et_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; const uint8_t *eaddr = CLLADDR(ifp->if_sadl); uint32_t val; int i; /* Disable RX MAC and WOL */ CSR_WRITE_4(sc, ET_RXMAC_CTRL, ET_RXMAC_CTRL_WOL_DISABLE); /* * Clear all WOL related registers */ for (i = 0; i < 3; ++i) CSR_WRITE_4(sc, ET_WOL_CRC + (i * 4), 0); for (i = 0; i < 20; ++i) CSR_WRITE_4(sc, ET_WOL_MASK + (i * 4), 0); /* * Set WOL source address. XXX is this necessary? */ val = (eaddr[2] << 24) | (eaddr[3] << 16) | (eaddr[4] << 8) | eaddr[5]; CSR_WRITE_4(sc, ET_WOL_SA_LO, val); val = (eaddr[0] << 8) | eaddr[1]; CSR_WRITE_4(sc, ET_WOL_SA_HI, val); /* Clear packet filters */ CSR_WRITE_4(sc, ET_PKTFILT, 0); /* No ucast filtering */ CSR_WRITE_4(sc, ET_UCAST_FILTADDR1, 0); CSR_WRITE_4(sc, ET_UCAST_FILTADDR2, 0); CSR_WRITE_4(sc, ET_UCAST_FILTADDR3, 0); if (ifp->if_mtu > 8192) { /* * In order to transmit jumbo packets greater than 8k, * the FIFO between RX MAC and RX DMA needs to be reduced * in size to (16k - MTU). In order to implement this, we * must use "cut through" mode in the RX MAC, which chops * packets down into segments which are (max_size * 16). * In this case we selected 256 bytes, since this is the * size of the PCI-Express TLP's that the 1310 uses. */ val = __SHIFTIN(16, ET_RXMAC_MC_SEGSZ_MAX) | ET_RXMAC_MC_SEGSZ_ENABLE; } else { val = 0; } CSR_WRITE_4(sc, ET_RXMAC_MC_SEGSZ, val); CSR_WRITE_4(sc, ET_RXMAC_MC_WATERMARK, 0); /* Initialize RX MAC management register */ CSR_WRITE_4(sc, ET_RXMAC_MGT, 0); CSR_WRITE_4(sc, ET_RXMAC_SPACE_AVL, 0); CSR_WRITE_4(sc, ET_RXMAC_MGT, ET_RXMAC_MGT_PASS_ECRC | ET_RXMAC_MGT_PASS_ELEN | ET_RXMAC_MGT_PASS_ETRUNC | ET_RXMAC_MGT_CHECK_PKT); /* * Configure runt filtering (may not work on certain chip generation) */ val = __SHIFTIN(ETHER_MIN_LEN, ET_PKTFILT_MINLEN) | ET_PKTFILT_FRAG; CSR_WRITE_4(sc, ET_PKTFILT, val); /* Enable RX MAC but leave WOL disabled */ CSR_WRITE_4(sc, ET_RXMAC_CTRL, ET_RXMAC_CTRL_WOL_DISABLE | ET_RXMAC_CTRL_ENABLE); /* * Setup multicast hash and allmulti/promisc mode */ et_setmulti(sc); } void et_init_txmac(struct et_softc *sc) { /* Disable TX MAC and FC(?) */ CSR_WRITE_4(sc, ET_TXMAC_CTRL, ET_TXMAC_CTRL_FC_DISABLE); /* No flow control yet */ CSR_WRITE_4(sc, ET_TXMAC_FLOWCTRL, 0); /* Enable TX MAC but leave FC(?) diabled */ CSR_WRITE_4(sc, ET_TXMAC_CTRL, ET_TXMAC_CTRL_ENABLE | ET_TXMAC_CTRL_FC_DISABLE); } int et_start_rxdma(struct et_softc *sc) { uint32_t val = 0; val |= __SHIFTIN(sc->sc_rx_data[0].rbd_bufsize, ET_RXDMA_CTRL_RING0_SIZE) | ET_RXDMA_CTRL_RING0_ENABLE; val |= __SHIFTIN(sc->sc_rx_data[1].rbd_bufsize, ET_RXDMA_CTRL_RING1_SIZE) | ET_RXDMA_CTRL_RING1_ENABLE; CSR_WRITE_4(sc, ET_RXDMA_CTRL, val); DELAY(5); if (CSR_READ_4(sc, ET_RXDMA_CTRL) & ET_RXDMA_CTRL_HALTED) { aprint_error_dev(sc->sc_dev, "can't start RX DMA engine\n"); return ETIMEDOUT; } return 0; } int et_start_txdma(struct et_softc *sc) { CSR_WRITE_4(sc, ET_TXDMA_CTRL, ET_TXDMA_CTRL_SINGLE_EPKT); return 0; } void et_rxeof(struct et_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; struct et_rxstatus_data *rxsd = &sc->sc_rx_status; struct et_rxstat_ring *rxst_ring = &sc->sc_rxstat_ring; uint32_t rxs_stat_ring; int rxst_wrap, rxst_index; if ((sc->sc_flags & ET_FLAG_TXRX_ENABLED) == 0) return; bus_dmamap_sync(sc->sc_dmat, rxsd->rxsd_dmap, 0, rxsd->rxsd_dmap->dm_mapsize, BUS_DMASYNC_POSTREAD); bus_dmamap_sync(sc->sc_dmat, rxst_ring->rsr_dmap, 0, rxst_ring->rsr_dmap->dm_mapsize, BUS_DMASYNC_POSTREAD); rxs_stat_ring = rxsd->rxsd_status->rxs_stat_ring; rxst_wrap = (rxs_stat_ring & ET_RXS_STATRING_WRAP) ? 1 : 0; rxst_index = __SHIFTOUT(rxs_stat_ring, ET_RXS_STATRING_INDEX); while (rxst_index != rxst_ring->rsr_index || rxst_wrap != rxst_ring->rsr_wrap) { struct et_rxbuf_data *rbd; struct et_rxdesc_ring *rx_ring; struct et_rxstat *st; struct et_rxbuf *rb; struct mbuf *m; int buflen, buf_idx, ring_idx; uint32_t rxstat_pos, rxring_pos; KASSERT(rxst_ring->rsr_index < ET_RX_NSTAT); st = &rxst_ring->rsr_stat[rxst_ring->rsr_index]; buflen = __SHIFTOUT(st->rxst_info2, ET_RXST_INFO2_LEN); buf_idx = __SHIFTOUT(st->rxst_info2, ET_RXST_INFO2_BUFIDX); ring_idx = __SHIFTOUT(st->rxst_info2, ET_RXST_INFO2_RINGIDX); if (++rxst_ring->rsr_index == ET_RX_NSTAT) { rxst_ring->rsr_index = 0; rxst_ring->rsr_wrap ^= 1; } rxstat_pos = __SHIFTIN(rxst_ring->rsr_index, ET_RXSTAT_POS_INDEX); if (rxst_ring->rsr_wrap) rxstat_pos |= ET_RXSTAT_POS_WRAP; CSR_WRITE_4(sc, ET_RXSTAT_POS, rxstat_pos); if (ring_idx >= ET_RX_NRING) { ifp->if_ierrors++; aprint_error_dev(sc->sc_dev, "invalid ring index %d\n", ring_idx); continue; } if (buf_idx >= ET_RX_NDESC) { ifp->if_ierrors++; aprint_error_dev(sc->sc_dev, "invalid buf index %d\n", buf_idx); continue; } rbd = &sc->sc_rx_data[ring_idx]; rb = &rbd->rbd_buf[buf_idx]; m = rb->rb_mbuf; bus_dmamap_sync(sc->sc_dmat, rb->rb_dmap, 0, rb->rb_dmap->dm_mapsize, BUS_DMASYNC_POSTREAD); if (rbd->rbd_newbuf(rbd, buf_idx, 0) == 0) { if (buflen < ETHER_CRC_LEN) { m_freem(m); ifp->if_ierrors++; } else { m->m_pkthdr.len = m->m_len = buflen - ETHER_CRC_LEN; m_set_rcvif(m, ifp); if_percpuq_enqueue(ifp->if_percpuq, m); } } else { ifp->if_ierrors++; } rx_ring = &sc->sc_rx_ring[ring_idx]; if (buf_idx != rx_ring->rr_index) { aprint_error_dev(sc->sc_dev, "WARNING!! ring %d, " "buf_idx %d, rr_idx %d\n", ring_idx, buf_idx, rx_ring->rr_index); } KASSERT(rx_ring->rr_index < ET_RX_NDESC); if (++rx_ring->rr_index == ET_RX_NDESC) { rx_ring->rr_index = 0; rx_ring->rr_wrap ^= 1; } rxring_pos = __SHIFTIN(rx_ring->rr_index, ET_RX_RING_POS_INDEX); if (rx_ring->rr_wrap) rxring_pos |= ET_RX_RING_POS_WRAP; CSR_WRITE_4(sc, rx_ring->rr_posreg, rxring_pos); } } int et_encap(struct et_softc *sc, struct mbuf **m0) { struct mbuf *m = *m0; struct et_txdesc_ring *tx_ring = &sc->sc_tx_ring; struct et_txbuf_data *tbd = &sc->sc_tx_data; struct et_txdesc *td; bus_dmamap_t map; int error, maxsegs, first_idx, last_idx, i; uint32_t tx_ready_pos, last_td_ctrl2; maxsegs = ET_TX_NDESC - tbd->tbd_used; if (maxsegs > ET_NSEG_MAX) maxsegs = ET_NSEG_MAX; KASSERTMSG(maxsegs >= ET_NSEG_SPARE, "not enough spare TX desc (%d)\n", maxsegs); KASSERT(tx_ring->tr_ready_index < ET_TX_NDESC); first_idx = tx_ring->tr_ready_index; map = tbd->tbd_buf[first_idx].tb_dmap; error = bus_dmamap_load_mbuf(sc->sc_dmat, map, m, BUS_DMA_NOWAIT); if (!error && map->dm_nsegs == 0) { bus_dmamap_unload(sc->sc_dmat, map); error = EFBIG; } if (error && error != EFBIG) { aprint_error_dev(sc->sc_dev, "can't load TX mbuf"); goto back; } if (error) { /* error == EFBIG */ struct mbuf *m_new; error = 0; MGETHDR(m_new, M_DONTWAIT, MT_DATA); if (m_new == NULL) { aprint_error_dev(sc->sc_dev, "can't defrag TX mbuf\n"); error = ENOBUFS; goto back; } M_COPY_PKTHDR(m_new, m); if (m->m_pkthdr.len > MHLEN) { MCLGET(m_new, M_DONTWAIT); if (!(m_new->m_flags & M_EXT)) { m_freem(m_new); error = ENOBUFS; } } if (error) { aprint_error_dev(sc->sc_dev, "can't defrag TX buffer\n"); goto back; } m_copydata(m, 0, m->m_pkthdr.len, mtod(m_new, void *)); m_freem(m); m_new->m_len = m_new->m_pkthdr.len; *m0 = m = m_new; error = bus_dmamap_load_mbuf(sc->sc_dmat, map, m, BUS_DMA_NOWAIT); if (error || map->dm_nsegs == 0) { if (map->dm_nsegs == 0) { bus_dmamap_unload(sc->sc_dmat, map); error = EFBIG; } aprint_error_dev(sc->sc_dev, "can't load defraged TX mbuf\n"); goto back; } } bus_dmamap_sync(sc->sc_dmat, map, 0, map->dm_mapsize, BUS_DMASYNC_PREWRITE); last_td_ctrl2 = ET_TDCTRL2_LAST_FRAG; sc->sc_tx += map->dm_nsegs; if (sc->sc_tx / sc->sc_tx_intr_nsegs != sc->sc_tx_intr) { sc->sc_tx_intr = sc->sc_tx / sc->sc_tx_intr_nsegs; last_td_ctrl2 |= ET_TDCTRL2_INTR; } last_idx = -1; for (i = 0; i < map->dm_nsegs; ++i) { int idx; idx = (first_idx + i) % ET_TX_NDESC; td = &tx_ring->tr_desc[idx]; td->td_addr_hi = ET_ADDR_HI(map->dm_segs[i].ds_addr); td->td_addr_lo = ET_ADDR_LO(map->dm_segs[i].ds_addr); td->td_ctrl1 = __SHIFTIN(map->dm_segs[i].ds_len, ET_TDCTRL1_LEN); if (i == map->dm_nsegs - 1) { /* Last frag */ td->td_ctrl2 = last_td_ctrl2; last_idx = idx; } KASSERT(tx_ring->tr_ready_index < ET_TX_NDESC); if (++tx_ring->tr_ready_index == ET_TX_NDESC) { tx_ring->tr_ready_index = 0; tx_ring->tr_ready_wrap ^= 1; } } td = &tx_ring->tr_desc[first_idx]; td->td_ctrl2 |= ET_TDCTRL2_FIRST_FRAG; /* First frag */ KASSERT(last_idx >= 0); tbd->tbd_buf[first_idx].tb_dmap = tbd->tbd_buf[last_idx].tb_dmap; tbd->tbd_buf[last_idx].tb_dmap = map; tbd->tbd_buf[last_idx].tb_mbuf = m; tbd->tbd_used += map->dm_nsegs; KASSERT(tbd->tbd_used <= ET_TX_NDESC); bus_dmamap_sync(sc->sc_dmat, tx_ring->tr_dmap, 0, tx_ring->tr_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); tx_ready_pos = __SHIFTIN(tx_ring->tr_ready_index, ET_TX_READY_POS_INDEX); if (tx_ring->tr_ready_wrap) tx_ready_pos |= ET_TX_READY_POS_WRAP; CSR_WRITE_4(sc, ET_TX_READY_POS, tx_ready_pos); error = 0; back: if (error) { m_freem(m); *m0 = NULL; } return error; } void et_txeof(struct et_softc *sc) { struct ifnet *ifp = &sc->sc_ethercom.ec_if; struct et_txdesc_ring *tx_ring = &sc->sc_tx_ring; struct et_txbuf_data *tbd = &sc->sc_tx_data; uint32_t tx_done; int end, wrap; if ((sc->sc_flags & ET_FLAG_TXRX_ENABLED) == 0) return; if (tbd->tbd_used == 0) return; tx_done = CSR_READ_4(sc, ET_TX_DONE_POS); end = __SHIFTOUT(tx_done, ET_TX_DONE_POS_INDEX); wrap = (tx_done & ET_TX_DONE_POS_WRAP) ? 1 : 0; while (tbd->tbd_start_index != end || tbd->tbd_start_wrap != wrap) { struct et_txbuf *tb; KASSERT(tbd->tbd_start_index < ET_TX_NDESC); tb = &tbd->tbd_buf[tbd->tbd_start_index]; bzero(&tx_ring->tr_desc[tbd->tbd_start_index], sizeof(struct et_txdesc)); bus_dmamap_sync(sc->sc_dmat, tx_ring->tr_dmap, 0, tx_ring->tr_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); if (tb->tb_mbuf != NULL) { bus_dmamap_unload(sc->sc_dmat, tb->tb_dmap); m_freem(tb->tb_mbuf); tb->tb_mbuf = NULL; ifp->if_opackets++; } if (++tbd->tbd_start_index == ET_TX_NDESC) { tbd->tbd_start_index = 0; tbd->tbd_start_wrap ^= 1; } KASSERT(tbd->tbd_used > 0); tbd->tbd_used--; } if (tbd->tbd_used == 0) { callout_stop(&sc->sc_txtick); ifp->if_timer = 0; } if (tbd->tbd_used + ET_NSEG_SPARE <= ET_TX_NDESC) ifp->if_flags &= ~IFF_OACTIVE; if_schedule_deferred_start(ifp); } void et_txtick(void *xsc) { struct et_softc *sc = xsc; int s; s = splnet(); et_txeof(sc); splx(s); } void et_tick(void *xsc) { struct et_softc *sc = xsc; int s; s = splnet(); mii_tick(&sc->sc_miibus); callout_schedule(&sc->sc_tick, hz); splx(s); } int et_newbuf_cluster(struct et_rxbuf_data *rbd, int buf_idx, int init) { return et_newbuf(rbd, buf_idx, init, MCLBYTES); } int et_newbuf_hdr(struct et_rxbuf_data *rbd, int buf_idx, int init) { return et_newbuf(rbd, buf_idx, init, MHLEN); } int et_newbuf(struct et_rxbuf_data *rbd, int buf_idx, int init, int len0) { struct et_softc *sc = rbd->rbd_softc; struct et_rxdesc_ring *rx_ring; struct et_rxdesc *desc; struct et_rxbuf *rb; struct mbuf *m; bus_dmamap_t dmap; int error, len; KASSERT(buf_idx < ET_RX_NDESC); rb = &rbd->rbd_buf[buf_idx]; if (len0 >= MINCLSIZE) { MGETHDR(m, init ? M_WAITOK : M_DONTWAIT, MT_DATA); if (m == NULL) return (ENOBUFS); MCLGET(m, init ? M_WAITOK : M_DONTWAIT); if ((m->m_flags & M_EXT) == 0) { m_freem(m); return (ENOBUFS); } len = MCLBYTES; } else { MGETHDR(m, init ? M_WAITOK : M_DONTWAIT, MT_DATA); len = MHLEN; } if (m == NULL) { error = ENOBUFS; /* XXX for debug */ aprint_error_dev(sc->sc_dev, "M_CLGET failed, size %d\n", len0); if (init) { return error; } else { goto back; } } m->m_len = m->m_pkthdr.len = len; /* * Try load RX mbuf into temporary DMA tag */ error = bus_dmamap_load_mbuf(sc->sc_dmat, sc->sc_mbuf_tmp_dmap, m, init ? BUS_DMA_WAITOK : BUS_DMA_NOWAIT); if (error) { m_freem(m); /* XXX for debug */ aprint_error_dev(sc->sc_dev, "can't load RX mbuf\n"); if (init) { return error; } else { goto back; } } if (!init) bus_dmamap_unload(sc->sc_dmat, rb->rb_dmap); rb->rb_mbuf = m; /* * Swap RX buf's DMA map with the loaded temporary one */ dmap = rb->rb_dmap; rb->rb_dmap = sc->sc_mbuf_tmp_dmap; rb->rb_paddr = rb->rb_dmap->dm_segs[0].ds_addr; sc->sc_mbuf_tmp_dmap = dmap; error = 0; back: rx_ring = rbd->rbd_ring; desc = &rx_ring->rr_desc[buf_idx]; desc->rd_addr_hi = ET_ADDR_HI(rb->rb_paddr); desc->rd_addr_lo = ET_ADDR_LO(rb->rb_paddr); desc->rd_ctrl = __SHIFTIN(buf_idx, ET_RDCTRL_BUFIDX); bus_dmamap_sync(sc->sc_dmat, rx_ring->rr_dmap, 0, rx_ring->rr_dmap->dm_mapsize, BUS_DMASYNC_PREWRITE); return error; }