/* $OpenBSD: if_jme.c,v 1.8 2008/10/20 19:39:37 brad Exp $ */ /*- * Copyright (c) 2008, Pyun YongHyeon * 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 unmodified, 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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. * * $FreeBSD: src/sys/dev/jme/if_jme.c,v 1.2 2008/07/18 04:20:48 yongari Exp $ * $DragonFly: src/sys/dev/netif/jme/if_jme.c,v 1.7 2008/09/13 04:04:39 sephe Exp $ */ #include "bpfilter.h" #include "vlan.h" #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 #if NBPFILTER > 0 #include #endif #include #include #include #include #include #include #include #include /* Define the following to disable printing Rx errors. */ #undef JME_SHOW_ERRORS int jme_match(struct device *, void *, void *); void jme_attach(struct device *, struct device *, void *); int jme_detach(struct device *, int); int jme_miibus_readreg(struct device *, int, int); void jme_miibus_writereg(struct device *, int, int, int); void jme_miibus_statchg(struct device *); int jme_init(struct ifnet *); int jme_ioctl(struct ifnet *, u_long, caddr_t); void jme_start(struct ifnet *); void jme_watchdog(struct ifnet *); void jme_mediastatus(struct ifnet *, struct ifmediareq *); int jme_mediachange(struct ifnet *); int jme_intr(void *); void jme_txeof(struct jme_softc *); void jme_rxeof(struct jme_softc *); int jme_dma_alloc(struct jme_softc *); void jme_dma_free(struct jme_softc *); int jme_init_rx_ring(struct jme_softc *); void jme_init_tx_ring(struct jme_softc *); void jme_init_ssb(struct jme_softc *); int jme_newbuf(struct jme_softc *, struct jme_rxdesc *, int); int jme_encap(struct jme_softc *, struct mbuf **); void jme_rxpkt(struct jme_softc *); void jme_tick(void *); void jme_stop(struct jme_softc *); void jme_reset(struct jme_softc *); void jme_set_vlan(struct jme_softc *); void jme_set_filter(struct jme_softc *); void jme_stop_tx(struct jme_softc *); void jme_stop_rx(struct jme_softc *); void jme_mac_config(struct jme_softc *); void jme_reg_macaddr(struct jme_softc *, uint8_t[]); int jme_eeprom_macaddr(struct jme_softc *, uint8_t[]); int jme_eeprom_read_byte(struct jme_softc *, uint8_t, uint8_t *); void jme_discard_rxbufs(struct jme_softc *, int, int); #ifdef notyet void jme_setwol(struct jme_softc *); void jme_setlinkspeed(struct jme_softc *); #endif /* * Devices supported by this driver. */ const struct pci_matchid jme_devices[] = { { PCI_VENDOR_JMICRON, PCI_PRODUCT_JMICRON_JMC250 }, { PCI_VENDOR_JMICRON, PCI_PRODUCT_JMICRON_JMC260 } }; struct cfattach jme_ca = { sizeof (struct jme_softc), jme_match, jme_attach }; struct cfdriver jme_cd = { NULL, "jme", DV_IFNET }; int jmedebug = 0; #define DPRINTF(x) do { if (jmedebug) printf x; } while (0) /* * Read a PHY register on the MII of the JMC250. */ int jme_miibus_readreg(struct device *dev, int phy, int reg) { struct jme_softc *sc = (struct jme_softc *)dev; uint32_t val; int i; /* For FPGA version, PHY address 0 should be ignored. */ if (sc->jme_caps & JME_CAP_FPGA) { if (phy == 0) return (0); } else { if (sc->jme_phyaddr != phy) return (0); } CSR_WRITE_4(sc, JME_SMI, SMI_OP_READ | SMI_OP_EXECUTE | SMI_PHY_ADDR(phy) | SMI_REG_ADDR(reg)); for (i = JME_PHY_TIMEOUT; i > 0; i--) { DELAY(1); if (((val = CSR_READ_4(sc, JME_SMI)) & SMI_OP_EXECUTE) == 0) break; } if (i == 0) { printf("%s: phy read timeout: phy %d, reg %d\n", sc->sc_dev.dv_xname, phy, reg); return (0); } return ((val & SMI_DATA_MASK) >> SMI_DATA_SHIFT); } /* * Write a PHY register on the MII of the JMC250. */ void jme_miibus_writereg(struct device *dev, int phy, int reg, int val) { struct jme_softc *sc = (struct jme_softc *)dev; int i; /* For FPGA version, PHY address 0 should be ignored. */ if (sc->jme_caps & JME_CAP_FPGA) { if (phy == 0) return; } else { if (sc->jme_phyaddr != phy) return; } CSR_WRITE_4(sc, JME_SMI, SMI_OP_WRITE | SMI_OP_EXECUTE | ((val << SMI_DATA_SHIFT) & SMI_DATA_MASK) | SMI_PHY_ADDR(phy) | SMI_REG_ADDR(reg)); for (i = JME_PHY_TIMEOUT; i > 0; i--) { DELAY(1); if (((val = CSR_READ_4(sc, JME_SMI)) & SMI_OP_EXECUTE) == 0) break; } if (i == 0) { printf("%s: phy write timeout: phy %d, reg %d\n", sc->sc_dev.dv_xname, phy, reg); } } /* * Callback from MII layer when media changes. */ void jme_miibus_statchg(struct device *dev) { struct jme_softc *sc = (struct jme_softc *)dev; struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct mii_data *mii; struct jme_txdesc *txd; bus_addr_t paddr; int i; if ((ifp->if_flags & IFF_RUNNING) == 0) return; mii = &sc->sc_miibus; sc->jme_flags &= ~JME_FLAG_LINK; if ((mii->mii_media_status & IFM_AVALID) != 0) { switch (IFM_SUBTYPE(mii->mii_media_active)) { case IFM_10_T: case IFM_100_TX: sc->jme_flags |= JME_FLAG_LINK; break; case IFM_1000_T: if (sc->jme_caps & JME_CAP_FASTETH) break; sc->jme_flags |= JME_FLAG_LINK; break; default: break; } } /* * Disabling Rx/Tx MACs have a side-effect of resetting * JME_TXNDA/JME_RXNDA register to the first address of * Tx/Rx descriptor address. So driver should reset its * internal procucer/consumer pointer and reclaim any * allocated resources. Note, just saving the value of * JME_TXNDA and JME_RXNDA registers before stopping MAC * and restoring JME_TXNDA/JME_RXNDA register is not * sufficient to make sure correct MAC state because * stopping MAC operation can take a while and hardware * might have updated JME_TXNDA/JME_RXNDA registers * during the stop operation. */ /* Disable interrupts */ CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS); /* Stop driver */ ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); ifp->if_timer = 0; timeout_del(&sc->jme_tick_ch); /* Stop receiver/transmitter. */ jme_stop_rx(sc); jme_stop_tx(sc); jme_rxeof(sc); if (sc->jme_cdata.jme_rxhead != NULL) m_freem(sc->jme_cdata.jme_rxhead); JME_RXCHAIN_RESET(sc); jme_txeof(sc); if (sc->jme_cdata.jme_tx_cnt != 0) { /* Remove queued packets for transmit. */ for (i = 0; i < JME_TX_RING_CNT; i++) { txd = &sc->jme_cdata.jme_txdesc[i]; if (txd->tx_m != NULL) { bus_dmamap_unload(sc->sc_dmat, txd->tx_dmamap); m_freem(txd->tx_m); txd->tx_m = NULL; txd->tx_ndesc = 0; ifp->if_oerrors++; } } } /* * Reuse configured Rx descriptors and reset * procuder/consumer index. */ sc->jme_cdata.jme_rx_cons = 0; jme_init_tx_ring(sc); /* Initialize shadow status block. */ jme_init_ssb(sc); /* Program MAC with resolved speed/duplex/flow-control. */ if (sc->jme_flags & JME_FLAG_LINK) { jme_mac_config(sc); CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr); CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr); /* Set Tx ring address to the hardware. */ paddr = JME_TX_RING_ADDR(sc, 0); CSR_WRITE_4(sc, JME_TXDBA_HI, JME_ADDR_HI(paddr)); CSR_WRITE_4(sc, JME_TXDBA_LO, JME_ADDR_LO(paddr)); /* Set Rx ring address to the hardware. */ paddr = JME_RX_RING_ADDR(sc, 0); CSR_WRITE_4(sc, JME_RXDBA_HI, JME_ADDR_HI(paddr)); CSR_WRITE_4(sc, JME_RXDBA_LO, JME_ADDR_LO(paddr)); /* Restart receiver/transmitter. */ CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr | RXCSR_RX_ENB | RXCSR_RXQ_START); CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr | TXCSR_TX_ENB); } ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; timeout_add_sec(&sc->jme_tick_ch, 1); /* Reenable interrupts. */ CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS); } /* * Get the current interface media status. */ void jme_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) { struct jme_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->sc_miibus; mii_pollstat(mii); ifmr->ifm_status = mii->mii_media_status; ifmr->ifm_active = mii->mii_media_active; } /* * Set hardware to newly-selected media. */ int jme_mediachange(struct ifnet *ifp) { struct jme_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->sc_miibus; int error; if (mii->mii_instance != 0) { struct mii_softc *miisc; LIST_FOREACH(miisc, &mii->mii_phys, mii_list) mii_phy_reset(miisc); } error = mii_mediachg(mii); return (error); } int jme_match(struct device *dev, void *match, void *aux) { return pci_matchbyid((struct pci_attach_args *)aux, jme_devices, sizeof (jme_devices) / sizeof (jme_devices[0])); } int jme_eeprom_read_byte(struct jme_softc *sc, uint8_t addr, uint8_t *val) { uint32_t reg; int i; *val = 0; for (i = JME_TIMEOUT; i > 0; i--) { reg = CSR_READ_4(sc, JME_SMBCSR); if ((reg & SMBCSR_HW_BUSY_MASK) == SMBCSR_HW_IDLE) break; DELAY(1); } if (i == 0) { printf("%s: EEPROM idle timeout!\n", sc->sc_dev.dv_xname); return (ETIMEDOUT); } reg = ((uint32_t)addr << SMBINTF_ADDR_SHIFT) & SMBINTF_ADDR_MASK; CSR_WRITE_4(sc, JME_SMBINTF, reg | SMBINTF_RD | SMBINTF_CMD_TRIGGER); for (i = JME_TIMEOUT; i > 0; i--) { DELAY(1); reg = CSR_READ_4(sc, JME_SMBINTF); if ((reg & SMBINTF_CMD_TRIGGER) == 0) break; } if (i == 0) { printf("%s: EEPROM read timeout!\n", sc->sc_dev.dv_xname); return (ETIMEDOUT); } reg = CSR_READ_4(sc, JME_SMBINTF); *val = (reg & SMBINTF_RD_DATA_MASK) >> SMBINTF_RD_DATA_SHIFT; return (0); } int jme_eeprom_macaddr(struct jme_softc *sc, uint8_t eaddr[]) { uint8_t fup, reg, val; uint32_t offset; int match; offset = 0; if (jme_eeprom_read_byte(sc, offset++, &fup) != 0 || fup != JME_EEPROM_SIG0) return (ENOENT); if (jme_eeprom_read_byte(sc, offset++, &fup) != 0 || fup != JME_EEPROM_SIG1) return (ENOENT); match = 0; do { if (jme_eeprom_read_byte(sc, offset, &fup) != 0) break; /* Check for the end of EEPROM descriptor. */ if ((fup & JME_EEPROM_DESC_END) == JME_EEPROM_DESC_END) break; if ((uint8_t)JME_EEPROM_MKDESC(JME_EEPROM_FUNC0, JME_EEPROM_PAGE_BAR1) == fup) { if (jme_eeprom_read_byte(sc, offset + 1, ®) != 0) break; if (reg >= JME_PAR0 && reg < JME_PAR0 + ETHER_ADDR_LEN) { if (jme_eeprom_read_byte(sc, offset + 2, &val) != 0) break; eaddr[reg - JME_PAR0] = val; match++; } } /* Try next eeprom descriptor. */ offset += JME_EEPROM_DESC_BYTES; } while (match != ETHER_ADDR_LEN && offset < JME_EEPROM_END); if (match == ETHER_ADDR_LEN) return (0); return (ENOENT); } void jme_reg_macaddr(struct jme_softc *sc, uint8_t eaddr[]) { uint32_t par0, par1; /* Read station address. */ par0 = CSR_READ_4(sc, JME_PAR0); par1 = CSR_READ_4(sc, JME_PAR1); par1 &= 0xFFFF; eaddr[0] = (par0 >> 0) & 0xFF; eaddr[1] = (par0 >> 8) & 0xFF; eaddr[2] = (par0 >> 16) & 0xFF; eaddr[3] = (par0 >> 24) & 0xFF; eaddr[4] = (par1 >> 0) & 0xFF; eaddr[5] = (par1 >> 8) & 0xFF; } void jme_attach(struct device *parent, struct device *self, void *aux) { struct jme_softc *sc = (struct jme_softc *)self; struct pci_attach_args *pa = aux; pci_chipset_tag_t pc = pa->pa_pc; pci_intr_handle_t ih; const char *intrstr; pcireg_t memtype; struct ifnet *ifp; uint32_t reg; int error = 0; /* * Allocate IO memory * * JMC250 supports both memory mapped and I/O register space * access. Because I/O register access should use different * BARs to access registers it's waste of time to use I/O * register spce access. JMC250 uses 16K to map entire memory * space. */ memtype = pci_mapreg_type(pa->pa_pc, pa->pa_tag, JME_PCIR_BAR); if (pci_mapreg_map(pa, JME_PCIR_BAR, memtype, 0, &sc->jme_mem_bt, &sc->jme_mem_bh, NULL, &sc->jme_mem_size, 0)) { printf(": could not map mem space\n"); return; } if (pci_intr_map(pa, &ih) != 0) { printf(": could not map interrupt\n"); return; } /* * Allocate IRQ */ intrstr = pci_intr_string(pc, ih); sc->sc_irq_handle = pci_intr_establish(pc, ih, IPL_NET, jme_intr, sc, sc->sc_dev.dv_xname); if (sc->sc_irq_handle == NULL) { printf(": could not establish interrupt"); if (intrstr != NULL) printf(" at %s", intrstr); printf("\n"); return; } printf(": %s", intrstr); sc->sc_dmat = pa->pa_dmat; sc->jme_pct = pa->pa_pc; sc->jme_pcitag = pa->pa_tag; /* * Extract FPGA revision */ reg = CSR_READ_4(sc, JME_CHIPMODE); if (((reg & CHIPMODE_FPGA_REV_MASK) >> CHIPMODE_FPGA_REV_SHIFT) != CHIPMODE_NOT_FPGA) { sc->jme_caps |= JME_CAP_FPGA; if (jmedebug) { printf("%s: FPGA revision : 0x%04x\n", sc->sc_dev.dv_xname, (reg & CHIPMODE_FPGA_REV_MASK) >> CHIPMODE_FPGA_REV_SHIFT); } } /* Reset the ethernet controller. */ jme_reset(sc); /* Get station address. */ reg = CSR_READ_4(sc, JME_SMBCSR); if (reg & SMBCSR_EEPROM_PRESENT) error = jme_eeprom_macaddr(sc, sc->sc_arpcom.ac_enaddr); if (error != 0 || (reg & SMBCSR_EEPROM_PRESENT) == 0) { if (error != 0 && (jmedebug)) { printf("%s: ethernet hardware address " "not found in EEPROM.\n", sc->sc_dev.dv_xname); } jme_reg_macaddr(sc, sc->sc_arpcom.ac_enaddr); } printf(", address %s\n", ether_sprintf(sc->sc_arpcom.ac_enaddr)); /* * Save PHY address. * Integrated JR0211 has fixed PHY address whereas FPGA version * requires PHY probing to get correct PHY address. */ if ((sc->jme_caps & JME_CAP_FPGA) == 0) { sc->jme_phyaddr = CSR_READ_4(sc, JME_GPREG0) & GPREG0_PHY_ADDR_MASK; if (jmedebug) { printf("%s: PHY is at address %d.\n", sc->sc_dev.dv_xname, sc->jme_phyaddr); } } else { sc->jme_phyaddr = 0; } /* Set max allowable DMA size. */ sc->jme_tx_dma_size = TXCSR_DMA_SIZE_512; sc->jme_rx_dma_size = RXCSR_DMA_SIZE_128; #ifdef notyet if (pci_find_extcap(dev, PCIY_PMG, &pmc) == 0) sc->jme_caps |= JME_CAP_PMCAP; #endif /* Allocate DMA stuffs */ error = jme_dma_alloc(sc); if (error) goto fail; ifp = &sc->sc_arpcom.ac_if; ifp->if_softc = sc; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_init = jme_init; ifp->if_ioctl = jme_ioctl; ifp->if_start = jme_start; ifp->if_watchdog = jme_watchdog; ifp->if_baudrate = IF_Gbps(1); IFQ_SET_MAXLEN(&ifp->if_snd, JME_TX_RING_CNT - 1); IFQ_SET_READY(&ifp->if_snd); strlcpy(ifp->if_xname, sc->sc_dev.dv_xname, IFNAMSIZ); ifp->if_capabilities = IFCAP_VLAN_MTU; #ifdef JME_CHECKSUM ifp->if_capabilities |= IFCAP_CSUM_IPv4 | IFCAP_CSUM_TCPv4 | IFCAP_CSUM_UDPv4; #endif #if NVLAN > 0 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING; #endif /* Set up MII bus. */ sc->sc_miibus.mii_ifp = ifp; sc->sc_miibus.mii_readreg = jme_miibus_readreg; sc->sc_miibus.mii_writereg = jme_miibus_writereg; sc->sc_miibus.mii_statchg = jme_miibus_statchg; ifmedia_init(&sc->sc_miibus.mii_media, 0, jme_mediachange, jme_mediastatus); mii_attach(self, &sc->sc_miibus, 0xffffffff, MII_PHY_ANY, MII_OFFSET_ANY, 0); if (LIST_FIRST(&sc->sc_miibus.mii_phys) == NULL) { printf("%s: no PHY found!\n", sc->sc_dev.dv_xname); ifmedia_add(&sc->sc_miibus.mii_media, IFM_ETHER | IFM_MANUAL, 0, NULL); ifmedia_set(&sc->sc_miibus.mii_media, IFM_ETHER | IFM_MANUAL); } else ifmedia_set(&sc->sc_miibus.mii_media, IFM_ETHER | IFM_AUTO); /* * Save PHYADDR for FPGA mode PHY not handled, not production hw */ if_attach(ifp); ether_ifattach(ifp); timeout_set(&sc->jme_tick_ch, jme_tick, sc); return; fail: jme_detach(&sc->sc_dev, 0); } int jme_detach(struct device *self, int flags) { struct jme_softc *sc = (struct jme_softc *)self; struct ifnet *ifp = &sc->sc_arpcom.ac_if; int s; s = splnet(); jme_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); jme_dma_free(sc); if (sc->sc_irq_handle != NULL) { pci_intr_disestablish(sc->jme_pct, sc->sc_irq_handle); sc->sc_irq_handle = NULL; } return (0); } int jme_dma_alloc(struct jme_softc *sc) { struct jme_txdesc *txd; struct jme_rxdesc *rxd; int error, i, nsegs; /* * Create DMA stuffs for TX ring */ error = bus_dmamap_create(sc->sc_dmat, JME_TX_RING_SIZE, 1, JME_TX_RING_SIZE, 0, BUS_DMA_NOWAIT, &sc->jme_cdata.jme_tx_ring_map); if (error) return (ENOBUFS); /* Allocate DMA'able memory for TX ring */ error = bus_dmamem_alloc(sc->sc_dmat, JME_TX_RING_SIZE, ETHER_ALIGN, 0, &sc->jme_rdata.jme_tx_ring_seg, 1, &nsegs, BUS_DMA_WAITOK); /* XXX zero */ if (error) { printf("%s: could not allocate DMA'able memory for Tx ring.\n", sc->sc_dev.dv_xname); return error; } error = bus_dmamem_map(sc->sc_dmat, &sc->jme_rdata.jme_tx_ring_seg, nsegs, JME_TX_RING_SIZE, (caddr_t *)&sc->jme_rdata.jme_tx_ring, BUS_DMA_NOWAIT); if (error) return (ENOBUFS); /* Load the DMA map for Tx ring. */ error = bus_dmamap_load(sc->sc_dmat, sc->jme_cdata.jme_tx_ring_map, sc->jme_rdata.jme_tx_ring, JME_TX_RING_SIZE, NULL, BUS_DMA_NOWAIT); if (error) { printf("%s: could not load DMA'able memory for Tx ring.\n", sc->sc_dev.dv_xname); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)&sc->jme_rdata.jme_tx_ring, 1); return error; } sc->jme_rdata.jme_tx_ring_paddr = sc->jme_cdata.jme_tx_ring_map->dm_segs[0].ds_addr; /* * Create DMA stuffs for RX ring */ error = bus_dmamap_create(sc->sc_dmat, JME_RX_RING_SIZE, 1, JME_RX_RING_SIZE, 0, BUS_DMA_NOWAIT, &sc->jme_cdata.jme_rx_ring_map); if (error) return (ENOBUFS); /* Allocate DMA'able memory for RX ring */ error = bus_dmamem_alloc(sc->sc_dmat, JME_RX_RING_SIZE, ETHER_ALIGN, 0, &sc->jme_rdata.jme_rx_ring_seg, 1, &nsegs, BUS_DMA_WAITOK); /* XXX zero */ if (error) { printf("%s: could not allocate DMA'able memory for Rx ring.\n", sc->sc_dev.dv_xname); return error; } error = bus_dmamem_map(sc->sc_dmat, &sc->jme_rdata.jme_rx_ring_seg, nsegs, JME_RX_RING_SIZE, (caddr_t *)&sc->jme_rdata.jme_rx_ring, BUS_DMA_NOWAIT); if (error) return (ENOBUFS); bzero(sc->jme_rdata.jme_rx_ring, JME_RX_RING_SIZE); /* Load the DMA map for Rx ring. */ error = bus_dmamap_load(sc->sc_dmat, sc->jme_cdata.jme_rx_ring_map, sc->jme_rdata.jme_rx_ring, JME_RX_RING_SIZE, NULL, BUS_DMA_NOWAIT); if (error) { printf("%s: could not load DMA'able memory for Rx ring.\n", sc->sc_dev.dv_xname); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)sc->jme_rdata.jme_rx_ring, 1); return error; } sc->jme_rdata.jme_rx_ring_paddr = sc->jme_cdata.jme_rx_ring_map->dm_segs[0].ds_addr; #if 0 /* Tx/Rx descriptor queue should reside within 4GB boundary. */ tx_ring_end = sc->jme_rdata.jme_tx_ring_paddr + JME_TX_RING_SIZE; rx_ring_end = sc->jme_rdata.jme_rx_ring_paddr + JME_RX_RING_SIZE; if ((JME_ADDR_HI(tx_ring_end) != JME_ADDR_HI(sc->jme_rdata.jme_tx_ring_paddr)) || (JME_ADDR_HI(rx_ring_end) != JME_ADDR_HI(sc->jme_rdata.jme_rx_ring_paddr))) { printf("%s: 4GB boundary crossed, switching to 32bit " "DMA address mode.\n", sc->sc_dev.dv_xname); jme_dma_free(sc); /* Limit DMA address space to 32bit and try again. */ lowaddr = BUS_SPACE_MAXADDR_32BIT; goto again; } #endif /* * Create DMA stuffs for shadow status block */ error = bus_dmamap_create(sc->sc_dmat, JME_SSB_SIZE, 1, JME_SSB_SIZE, 0, BUS_DMA_NOWAIT, &sc->jme_cdata.jme_ssb_map); if (error) return (ENOBUFS); /* Allocate DMA'able memory for shared status block. */ error = bus_dmamem_alloc(sc->sc_dmat, JME_SSB_SIZE, 1, 0, &sc->jme_rdata.jme_ssb_block_seg, 1, &nsegs, BUS_DMA_WAITOK); if (error) { printf("%s: could not allocate DMA'able " "memory for shared status block.\n", sc->sc_dev.dv_xname); return error; } error = bus_dmamem_map(sc->sc_dmat, &sc->jme_rdata.jme_ssb_block_seg, nsegs, JME_SSB_SIZE, (caddr_t *)&sc->jme_rdata.jme_ssb_block, BUS_DMA_NOWAIT); if (error) return (ENOBUFS); /* Load the DMA map for shared status block */ error = bus_dmamap_load(sc->sc_dmat, sc->jme_cdata.jme_ssb_map, sc->jme_rdata.jme_ssb_block, JME_SSB_SIZE, NULL, BUS_DMA_NOWAIT); if (error) { printf("%s: could not load DMA'able memory " "for shared status block.\n", sc->sc_dev.dv_xname); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)sc->jme_rdata.jme_ssb_block, 1); return error; } sc->jme_rdata.jme_ssb_block_paddr = sc->jme_cdata.jme_ssb_map->dm_segs[0].ds_addr; /* * Create DMA stuffs for TX buffers */ /* Create DMA maps for Tx buffers. */ for (i = 0; i < JME_TX_RING_CNT; i++) { txd = &sc->jme_cdata.jme_txdesc[i]; error = bus_dmamap_create(sc->sc_dmat, JME_TSO_MAXSIZE, JME_MAXTXSEGS, JME_TSO_MAXSEGSIZE, 0, BUS_DMA_NOWAIT, &txd->tx_dmamap); if (error) { int j; printf("%s: could not create %dth Tx dmamap.\n", sc->sc_dev.dv_xname, i); for (j = 0; j < i; ++j) { txd = &sc->jme_cdata.jme_txdesc[j]; bus_dmamap_destroy(sc->sc_dmat, txd->tx_dmamap); } sc->jme_cdata.jme_tx_tag = NULL; return error; } } /* * Create DMA stuffs for RX buffers */ /* Create DMA maps for Rx buffers. */ error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &sc->jme_cdata.jme_rx_sparemap); if (error) { printf("%s: could not create spare Rx dmamap.\n", sc->sc_dev.dv_xname); return error; } for (i = 0; i < JME_RX_RING_CNT; i++) { rxd = &sc->jme_cdata.jme_rxdesc[i]; error = bus_dmamap_create(sc->sc_dmat, MCLBYTES, 1, MCLBYTES, 0, BUS_DMA_NOWAIT, &rxd->rx_dmamap); if (error) { int j; printf("%s: could not create %dth Rx dmamap.\n", sc->sc_dev.dv_xname, i); for (j = 0; j < i; ++j) { rxd = &sc->jme_cdata.jme_rxdesc[j]; bus_dmamap_destroy(sc->sc_dmat, rxd->rx_dmamap); } bus_dmamap_destroy(sc->sc_dmat, sc->jme_cdata.jme_rx_sparemap); sc->jme_cdata.jme_rx_tag = NULL; return error; } } return 0; } void jme_dma_free(struct jme_softc *sc) { struct jme_txdesc *txd; struct jme_rxdesc *rxd; int i; /* Tx ring */ bus_dmamap_unload(sc->sc_dmat, sc->jme_cdata.jme_tx_ring_map); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)sc->jme_rdata.jme_tx_ring, 1); /* Rx ring */ bus_dmamap_unload(sc->sc_dmat, sc->jme_cdata.jme_rx_ring_map); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)sc->jme_rdata.jme_rx_ring, 1); /* Tx buffers */ for (i = 0; i < JME_TX_RING_CNT; i++) { txd = &sc->jme_cdata.jme_txdesc[i]; bus_dmamap_destroy(sc->sc_dmat, txd->tx_dmamap); } /* Rx buffers */ for (i = 0; i < JME_RX_RING_CNT; i++) { rxd = &sc->jme_cdata.jme_rxdesc[i]; bus_dmamap_destroy(sc->sc_dmat, rxd->rx_dmamap); } bus_dmamap_destroy(sc->sc_dmat, sc->jme_cdata.jme_rx_sparemap); /* Shadow status block. */ bus_dmamap_unload(sc->sc_dmat, sc->jme_cdata.jme_ssb_map); bus_dmamem_free(sc->sc_dmat, (bus_dma_segment_t *)sc->jme_rdata.jme_ssb_block, 1); } #ifdef notyet /* * Unlike other ethernet controllers, JMC250 requires * explicit resetting link speed to 10/100Mbps as gigabit * link will cunsume more power than 375mA. * Note, we reset the link speed to 10/100Mbps with * auto-negotiation but we don't know whether that operation * would succeed or not as we have no control after powering * off. If the renegotiation fail WOL may not work. Running * at 1Gbps draws more power than 375mA at 3.3V which is * specified in PCI specification and that would result in * complete shutdowning power to ethernet controller. * * TODO * Save current negotiated media speed/duplex/flow-control * to softc and restore the same link again after resuming. * PHY handling such as power down/resetting to 100Mbps * may be better handled in suspend method in phy driver. */ void jme_setlinkspeed(struct jme_softc *sc) { struct mii_data *mii; int aneg, i; JME_LOCK_ASSERT(sc); mii = &sc->sc_miibus; mii_pollstat(mii); aneg = 0; if ((mii->mii_media_status & IFM_AVALID) != 0) { switch IFM_SUBTYPE(mii->mii_media_active) { case IFM_10_T: case IFM_100_TX: return; case IFM_1000_T: aneg++; default: break; } } jme_miibus_writereg(&sc->sc_dev, sc->jme_phyaddr, MII_100T2CR, 0); jme_miibus_writereg(&sc->sc_dev, sc->jme_phyaddr, MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA); jme_miibus_writereg(&sc->sc_dev, sc->jme_phyaddr, MII_BMCR, BMCR_AUTOEN | BMCR_STARTNEG); DELAY(1000); if (aneg != 0) { /* Poll link state until jme(4) get a 10/100 link. */ for (i = 0; i < MII_ANEGTICKS_GIGE; i++) { mii_pollstat(mii); if ((mii->mii_media_status & IFM_AVALID) != 0) { switch (IFM_SUBTYPE(mii->mii_media_active)) { case IFM_10_T: case IFM_100_TX: jme_mac_config(sc); return; default: break; } } JME_UNLOCK(sc); pause("jmelnk", hz); JME_LOCK(sc); } if (i == MII_ANEGTICKS_GIGE) printf("%s: establishing link failed, " "WOL may not work!\n", sc->sc_dev.dv_xname); } /* * No link, force MAC to have 100Mbps, full-duplex link. * This is the last resort and may/may not work. */ mii->mii_media_status = IFM_AVALID | IFM_ACTIVE; mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX; jme_mac_config(sc); } void jme_setwol(struct jme_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; uint32_t gpr, pmcs; uint16_t pmstat; int pmc; if (pci_find_extcap(sc->sc_dev, PCIY_PMG, &pmc) != 0) { /* No PME capability, PHY power down. */ jme_miibus_writereg(&sc->sc_dev, sc->jme_phyaddr, MII_BMCR, BMCR_PDOWN); return; } gpr = CSR_READ_4(sc, JME_GPREG0) & ~GPREG0_PME_ENB; pmcs = CSR_READ_4(sc, JME_PMCS); pmcs &= ~PMCS_WOL_ENB_MASK; if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0) { pmcs |= PMCS_MAGIC_FRAME | PMCS_MAGIC_FRAME_ENB; /* Enable PME message. */ gpr |= GPREG0_PME_ENB; /* For gigabit controllers, reset link speed to 10/100. */ if ((sc->jme_caps & JME_CAP_FASTETH) == 0) jme_setlinkspeed(sc); } CSR_WRITE_4(sc, JME_PMCS, pmcs); CSR_WRITE_4(sc, JME_GPREG0, gpr); /* Request PME. */ pmstat = pci_read_config(sc->sc_dev, pmc + PCIR_POWER_STATUS, 2); pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE); if ((ifp->if_capenable & IFCAP_WOL) != 0) pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE; pci_write_config(sc->sc_dev, pmc + PCIR_POWER_STATUS, pmstat, 2); if ((ifp->if_capenable & IFCAP_WOL) == 0) { /* No WOL, PHY power down. */ jme_miibus_writereg(&sc->sc_dev, sc->jme_phyaddr, MII_BMCR, BMCR_PDOWN); } } #endif int jme_encap(struct jme_softc *sc, struct mbuf **m_head) { struct jme_txdesc *txd; struct jme_desc *desc; struct mbuf *m; int maxsegs; int error, i, prod; uint32_t cflags; prod = sc->jme_cdata.jme_tx_prod; txd = &sc->jme_cdata.jme_txdesc[prod]; maxsegs = (JME_TX_RING_CNT - sc->jme_cdata.jme_tx_cnt) - (JME_TXD_RSVD + 1); if (maxsegs > JME_MAXTXSEGS) maxsegs = JME_MAXTXSEGS; if (maxsegs < (sc->jme_txd_spare - 1)) panic("%s: not enough segments %d\n", sc->sc_dev.dv_xname, maxsegs); error = bus_dmamap_load_mbuf(sc->sc_dmat, txd->tx_dmamap, *m_head, BUS_DMA_NOWAIT); if (error != 0) { bus_dmamap_unload(sc->sc_dmat, txd->tx_dmamap); error = EFBIG; } if (error == EFBIG) { error = 0; MGETHDR(m, M_DONTWAIT, MT_DATA); if (m == NULL) { printf("%s: can't defrag TX mbuf\n", sc->sc_dev.dv_xname); m_freem(*m_head); *m_head = NULL; return (ENOBUFS); } M_DUP_PKTHDR(m, *m_head); if ((*m_head)->m_pkthdr.len > MHLEN) { MCLGET(m, M_DONTWAIT); if (!(m->m_flags & M_EXT)) { m_freem(*m_head); m_freem(m); *m_head = NULL; return (ENOBUFS); } } m_copydata(*m_head, 0, (*m_head)->m_pkthdr.len, mtod(m, caddr_t)); m_freem(*m_head); m->m_len = m->m_pkthdr.len; *m_head = m; error = bus_dmamap_load_mbuf(sc->sc_dmat, txd->tx_dmamap, *m_head, BUS_DMA_NOWAIT); if (error != 0) { printf("%s: could not load defragged TX mbuf\n", sc->sc_dev.dv_xname); if (!error) { bus_dmamap_unload(sc->sc_dmat, txd->tx_dmamap); error = EFBIG; } m_freem(*m_head); *m_head = NULL; return (error); } } else if (error) { printf("%s: could not load TX mbuf\n", sc->sc_dev.dv_xname); return (error); } m = *m_head; cflags = 0; /* Configure checksum offload. */ if (m->m_pkthdr.csum_flags & M_IPV4_CSUM_OUT) cflags |= JME_TD_IPCSUM; if (m->m_pkthdr.csum_flags & M_TCPV4_CSUM_OUT) cflags |= JME_TD_TCPCSUM; if (m->m_pkthdr.csum_flags & M_UDPV4_CSUM_OUT) cflags |= JME_TD_UDPCSUM; #if NVLAN > 0 /* Configure VLAN. */ if (m->m_flags & M_VLANTAG) { cflags |= (m->m_pkthdr.ether_vtag & JME_TD_VLAN_MASK); cflags |= JME_TD_VLAN_TAG; printf("%s: VLAN tag\n", sc->sc_dev.dv_xname); } #endif desc = &sc->jme_rdata.jme_tx_ring[prod]; desc->flags = htole32(cflags); desc->buflen = 0; desc->addr_hi = htole32(m->m_pkthdr.len); desc->addr_lo = 0; sc->jme_cdata.jme_tx_cnt++; KASSERT(sc->jme_cdata.jme_tx_cnt < JME_TX_RING_CNT - JME_TXD_RSVD); JME_DESC_INC(prod, JME_TX_RING_CNT); for (i = 0; i < txd->tx_dmamap->dm_nsegs; i++) { desc = &sc->jme_rdata.jme_tx_ring[prod]; desc->flags = htole32(JME_TD_OWN | JME_TD_64BIT); desc->buflen = htole32(txd->tx_dmamap->dm_segs[i].ds_len); desc->addr_hi = htole32(JME_ADDR_HI(txd->tx_dmamap->dm_segs[i].ds_addr)); desc->addr_lo = htole32(JME_ADDR_LO(txd->tx_dmamap->dm_segs[i].ds_addr)); sc->jme_cdata.jme_tx_cnt++; KASSERT(sc->jme_cdata.jme_tx_cnt <= JME_TX_RING_CNT - JME_TXD_RSVD); JME_DESC_INC(prod, JME_TX_RING_CNT); } /* Update producer index. */ sc->jme_cdata.jme_tx_prod = prod; /* * Finally request interrupt and give the first descriptor * owenership to hardware. */ desc = txd->tx_desc; desc->flags |= htole32(JME_TD_OWN | JME_TD_INTR); txd->tx_m = m; txd->tx_ndesc = txd->tx_dmamap->dm_nsegs + 1; /* Sync descriptors. */ bus_dmamap_sync(sc->sc_dmat, txd->tx_dmamap, 0, txd->tx_dmamap->dm_mapsize, BUS_DMASYNC_PREWRITE); bus_dmamap_sync(sc->sc_dmat, sc->jme_cdata.jme_tx_ring_map, 0, sc->jme_cdata.jme_tx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); return (0); } void jme_start(struct ifnet *ifp) { struct jme_softc *sc = ifp->if_softc; struct mbuf *m_head; int enq = 0; if ((ifp->if_flags & (IFF_RUNNING | IFF_OACTIVE)) != IFF_RUNNING) return; if (sc->jme_cdata.jme_tx_cnt >= JME_TX_DESC_HIWAT) jme_txeof(sc); for (;;) { /* * Check number of available TX descs, always * leave JME_TXD_RSVD free TX descs. */ if (sc->jme_cdata.jme_tx_cnt + sc->jme_txd_spare > JME_TX_RING_CNT - JME_TXD_RSVD) { ifp->if_flags |= IFF_OACTIVE; break; } IFQ_DEQUEUE(&ifp->if_snd, m_head); if (m_head == NULL) break; #if NBPFILTER > 0 if (ifp->if_bpf != NULL) bpf_mtap(ifp->if_bpf, m_head, BPF_DIRECTION_OUT); #endif /* * Pack the data into the transmit ring. If we * don't have room, set the OACTIVE flag and wait * for the NIC to drain the ring. */ if (jme_encap(sc, &m_head)) { if (m_head == NULL) { ifp->if_oerrors++; break; } ifp->if_flags |= IFF_OACTIVE; break; } enq++; /* * If there's a BPF listener, bounce a copy of this frame * to him. */ #if NBPFILTER > 0 if (ifp->if_bpf != NULL) bpf_mtap(ifp->if_bpf, m_head, BPF_DIRECTION_OUT); #endif } if (enq > 0) { /* * Reading TXCSR takes very long time under heavy load * so cache TXCSR value and writes the ORed value with * the kick command to the TXCSR. This saves one register * access cycle. */ CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr | TXCSR_TX_ENB | TXCSR_TXQ_N_START(TXCSR_TXQ0)); /* Set a timeout in case the chip goes out to lunch. */ ifp->if_timer = JME_TX_TIMEOUT; } } void jme_watchdog(struct ifnet *ifp) { struct jme_softc *sc = ifp->if_softc; if ((sc->jme_flags & JME_FLAG_LINK) == 0) { printf("%s: watchdog timeout (missed link)\n", sc->sc_dev.dv_xname); ifp->if_oerrors++; jme_init(ifp); return; } jme_txeof(sc); if (sc->jme_cdata.jme_tx_cnt == 0) { printf("%s: watchdog timeout (missed Tx interrupts) " "-- recovering\n", sc->sc_dev.dv_xname); if (!IFQ_IS_EMPTY(&ifp->if_snd)) jme_start(ifp); return; } printf("%s: watchdog timeout\n", sc->sc_dev.dv_xname); ifp->if_oerrors++; jme_init(ifp); if (!IFQ_IS_EMPTY(&ifp->if_snd)) jme_start(ifp); } int jme_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct jme_softc *sc = ifp->if_softc; struct mii_data *mii = &sc->sc_miibus; struct ifaddr *ifa = (struct ifaddr *)data; struct ifreq *ifr = (struct ifreq *)data; int error = 0, s; s = splnet(); switch (cmd) { case SIOCSIFADDR: ifp->if_flags |= IFF_UP; if (!(ifp->if_flags & IFF_RUNNING)) jme_init(ifp); #ifdef INET if (ifa->ifa_addr->sa_family == AF_INET) arp_ifinit(&sc->sc_arpcom, ifa); #endif break; case SIOCSIFFLAGS: if (ifp->if_flags & IFF_UP) { if (ifp->if_flags & IFF_RUNNING) jme_set_filter(sc); else jme_init(ifp); } else { if (ifp->if_flags & IFF_RUNNING) jme_stop(sc); } break; case SIOCADDMULTI: case SIOCDELMULTI: error = (cmd == SIOCADDMULTI) ? ether_addmulti(ifr, &sc->sc_arpcom) : ether_delmulti(ifr, &sc->sc_arpcom); if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) jme_set_filter(sc); error = 0; } break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd); break; default: error = ether_ioctl(ifp, &sc->sc_arpcom, cmd, data); } if (error == ENETRESET) { if (ifp->if_flags & IFF_RUNNING) jme_set_filter(sc); error = 0; } splx(s); return (error); } void jme_mac_config(struct jme_softc *sc) { struct mii_data *mii; uint32_t ghc, rxmac, txmac, txpause; int phyconf = JMPHY_CONF_DEFFIFO; mii = &sc->sc_miibus; CSR_WRITE_4(sc, JME_GHC, GHC_RESET); DELAY(10); CSR_WRITE_4(sc, JME_GHC, 0); ghc = 0; rxmac = CSR_READ_4(sc, JME_RXMAC); rxmac &= ~RXMAC_FC_ENB; txmac = CSR_READ_4(sc, JME_TXMAC); txmac &= ~(TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST); txpause = CSR_READ_4(sc, JME_TXPFC); txpause &= ~TXPFC_PAUSE_ENB; if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) { ghc |= GHC_FULL_DUPLEX; rxmac &= ~RXMAC_COLL_DET_ENB; txmac &= ~(TXMAC_COLL_ENB | TXMAC_CARRIER_SENSE | TXMAC_BACKOFF | TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST); #ifdef notyet if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0) txpause |= TXPFC_PAUSE_ENB; if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0) rxmac |= RXMAC_FC_ENB; #endif /* Disable retry transmit timer/retry limit. */ CSR_WRITE_4(sc, JME_TXTRHD, CSR_READ_4(sc, JME_TXTRHD) & ~(TXTRHD_RT_PERIOD_ENB | TXTRHD_RT_LIMIT_ENB)); } else { rxmac |= RXMAC_COLL_DET_ENB; txmac |= TXMAC_COLL_ENB | TXMAC_CARRIER_SENSE | TXMAC_BACKOFF; /* Enable retry transmit timer/retry limit. */ CSR_WRITE_4(sc, JME_TXTRHD, CSR_READ_4(sc, JME_TXTRHD) | TXTRHD_RT_PERIOD_ENB | TXTRHD_RT_LIMIT_ENB); } /* Reprogram Tx/Rx MACs with resolved speed/duplex. */ switch (IFM_SUBTYPE(mii->mii_media_active)) { case IFM_10_T: ghc |= GHC_SPEED_10; break; case IFM_100_TX: ghc |= GHC_SPEED_100; /* * Use extended FIFO depth to workaround CRC errors * emitted by chips before JMC250B */ phyconf = JMPHY_CONF_EXTFIFO; break; case IFM_1000_T: if (sc->jme_caps & JME_CAP_FASTETH) break; ghc |= GHC_SPEED_1000; if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) == 0) txmac |= TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST; break; default: break; } CSR_WRITE_4(sc, JME_GHC, ghc); CSR_WRITE_4(sc, JME_RXMAC, rxmac); CSR_WRITE_4(sc, JME_TXMAC, txmac); CSR_WRITE_4(sc, JME_TXPFC, txpause); if (sc->jme_caps & JME_CAP_EXTFIFO) { jme_miibus_writereg(&sc->sc_dev, sc->jme_phyaddr, JMPHY_CONF, phyconf); } } int jme_intr(void *xsc) { struct jme_softc *sc = xsc; struct ifnet *ifp = &sc->sc_arpcom.ac_if; uint32_t status; int claimed = 0; status = CSR_READ_4(sc, JME_INTR_REQ_STATUS); if (status == 0 || status == 0xFFFFFFFF) return (0); /* Disable interrupts. */ CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS); status = CSR_READ_4(sc, JME_INTR_STATUS); if ((status & JME_INTRS) == 0 || status == 0xFFFFFFFF) goto back; /* Reset PCC counter/timer and Ack interrupts. */ status &= ~(INTR_TXQ_COMP | INTR_RXQ_COMP); if (status & (INTR_TXQ_COAL | INTR_TXQ_COAL_TO)) status |= INTR_TXQ_COAL | INTR_TXQ_COAL_TO | INTR_TXQ_COMP; if (status & (INTR_RXQ_COAL | INTR_RXQ_COAL_TO)) status |= INTR_RXQ_COAL | INTR_RXQ_COAL_TO | INTR_RXQ_COMP; CSR_WRITE_4(sc, JME_INTR_STATUS, status); if (ifp->if_flags & IFF_RUNNING) { if (status & (INTR_RXQ_COAL | INTR_RXQ_COAL_TO)) jme_rxeof(sc); if (status & INTR_RXQ_DESC_EMPTY) { /* * Notify hardware availability of new Rx buffers. * Reading RXCSR takes very long time under heavy * load so cache RXCSR value and writes the ORed * value with the kick command to the RXCSR. This * saves one register access cycle. */ CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr | RXCSR_RX_ENB | RXCSR_RXQ_START); } if (status & (INTR_TXQ_COAL | INTR_TXQ_COAL_TO)) { jme_txeof(sc); if (!IFQ_IS_EMPTY(&ifp->if_snd)) jme_start(ifp); } } claimed = 1; back: /* Reenable interrupts. */ CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS); return (claimed); } void jme_txeof(struct jme_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct jme_txdesc *txd; uint32_t status; int cons, nsegs; cons = sc->jme_cdata.jme_tx_cons; if (cons == sc->jme_cdata.jme_tx_prod) return; bus_dmamap_sync(sc->sc_dmat, sc->jme_cdata.jme_tx_ring_map, 0, sc->jme_cdata.jme_tx_ring_map->dm_mapsize, BUS_DMASYNC_POSTREAD); /* * Go through our Tx list and free mbufs for those * frames which have been transmitted. */ while (cons != sc->jme_cdata.jme_tx_prod) { txd = &sc->jme_cdata.jme_txdesc[cons]; if (txd->tx_m == NULL) panic("%s: freeing NULL mbuf!\n", sc->sc_dev.dv_xname); status = letoh32(txd->tx_desc->flags); if ((status & JME_TD_OWN) == JME_TD_OWN) break; if (status & (JME_TD_TMOUT | JME_TD_RETRY_EXP)) { ifp->if_oerrors++; } else { ifp->if_opackets++; if (status & JME_TD_COLLISION) { ifp->if_collisions += letoh32(txd->tx_desc->buflen) & JME_TD_BUF_LEN_MASK; } } /* * Only the first descriptor of multi-descriptor * transmission is updated so driver have to skip entire * chained buffers for the transmiited frame. In other * words, JME_TD_OWN bit is valid only at the first * descriptor of a multi-descriptor transmission. */ for (nsegs = 0; nsegs < txd->tx_ndesc; nsegs++) { sc->jme_rdata.jme_tx_ring[cons].flags = 0; JME_DESC_INC(cons, JME_TX_RING_CNT); } /* Reclaim transferred mbufs. */ bus_dmamap_unload(sc->sc_dmat, txd->tx_dmamap); m_freem(txd->tx_m); txd->tx_m = NULL; sc->jme_cdata.jme_tx_cnt -= txd->tx_ndesc; if (sc->jme_cdata.jme_tx_cnt < 0) panic("%s: Active Tx desc counter was garbled\n", sc->sc_dev.dv_xname); txd->tx_ndesc = 0; } sc->jme_cdata.jme_tx_cons = cons; if (sc->jme_cdata.jme_tx_cnt == 0) ifp->if_timer = 0; if (sc->jme_cdata.jme_tx_cnt + sc->jme_txd_spare <= JME_TX_RING_CNT - JME_TXD_RSVD) ifp->if_flags &= ~IFF_OACTIVE; bus_dmamap_sync(sc->sc_dmat, sc->jme_cdata.jme_tx_ring_map, 0, sc->jme_cdata.jme_tx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); } void jme_discard_rxbufs(struct jme_softc *sc, int cons, int count) { int i; for (i = 0; i < count; ++i) { struct jme_desc *desc = &sc->jme_rdata.jme_rx_ring[cons]; desc->flags = htole32(JME_RD_OWN | JME_RD_INTR | JME_RD_64BIT); desc->buflen = htole32(MCLBYTES); JME_DESC_INC(cons, JME_RX_RING_CNT); } } /* Receive a frame. */ void jme_rxpkt(struct jme_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct jme_desc *desc; struct jme_rxdesc *rxd; struct mbuf *mp, *m; uint32_t flags, status; int cons, count, nsegs; cons = sc->jme_cdata.jme_rx_cons; desc = &sc->jme_rdata.jme_rx_ring[cons]; flags = letoh32(desc->flags); status = letoh32(desc->buflen); nsegs = JME_RX_NSEGS(status); if (status & JME_RX_ERR_STAT) { ifp->if_ierrors++; jme_discard_rxbufs(sc, cons, nsegs); #ifdef JME_SHOW_ERRORS printf("%s : receive error = 0x%b\n", sc->sc_dev.dv_xname, JME_RX_ERR(status), JME_RX_ERR_BITS); #endif sc->jme_cdata.jme_rx_cons += nsegs; sc->jme_cdata.jme_rx_cons %= JME_RX_RING_CNT; return; } sc->jme_cdata.jme_rxlen = JME_RX_BYTES(status) - JME_RX_PAD_BYTES; for (count = 0; count < nsegs; count++, JME_DESC_INC(cons, JME_RX_RING_CNT)) { rxd = &sc->jme_cdata.jme_rxdesc[cons]; mp = rxd->rx_m; /* Add a new receive buffer to the ring. */ if (jme_newbuf(sc, rxd, 0) != 0) { ifp->if_iqdrops++; /* Reuse buffer. */ jme_discard_rxbufs(sc, cons, nsegs - count); if (sc->jme_cdata.jme_rxhead != NULL) { m_freem(sc->jme_cdata.jme_rxhead); JME_RXCHAIN_RESET(sc); } break; } /* * Assume we've received a full sized frame. * Actual size is fixed when we encounter the end of * multi-segmented frame. */ mp->m_len = MCLBYTES; /* Chain received mbufs. */ if (sc->jme_cdata.jme_rxhead == NULL) { sc->jme_cdata.jme_rxhead = mp; sc->jme_cdata.jme_rxtail = mp; } else { /* * Receive processor can receive a maximum frame * size of 65535 bytes. */ mp->m_flags &= ~M_PKTHDR; sc->jme_cdata.jme_rxtail->m_next = mp; sc->jme_cdata.jme_rxtail = mp; } if (count == nsegs - 1) { /* Last desc. for this frame. */ m = sc->jme_cdata.jme_rxhead; /* XXX assert PKTHDR? */ m->m_flags |= M_PKTHDR; m->m_pkthdr.len = sc->jme_cdata.jme_rxlen; if (nsegs > 1) { /* Set first mbuf size. */ m->m_len = MCLBYTES - JME_RX_PAD_BYTES; /* Set last mbuf size. */ mp->m_len = sc->jme_cdata.jme_rxlen - ((MCLBYTES - JME_RX_PAD_BYTES) + (MCLBYTES * (nsegs - 2))); } else { m->m_len = sc->jme_cdata.jme_rxlen; } m->m_pkthdr.rcvif = ifp; /* * Account for 10bytes auto padding which is used * to align IP header on 32bit boundary. Also note, * CRC bytes is automatically removed by the * hardware. */ m->m_data += JME_RX_PAD_BYTES; /* Set checksum information. */ if (flags & JME_RD_IPV4) { if (flags & JME_RD_IPCSUM) m->m_pkthdr.csum_flags |= M_IPV4_CSUM_IN_OK; if ((flags & JME_RD_MORE_FRAG) == 0 && ((flags & (JME_RD_TCP | JME_RD_TCPCSUM)) == (JME_RD_TCP | JME_RD_TCPCSUM) || (flags & (JME_RD_UDP | JME_RD_UDPCSUM)) == (JME_RD_UDP | JME_RD_UDPCSUM))) { m->m_pkthdr.csum_flags |= M_TCP_CSUM_IN_OK | M_UDP_CSUM_IN_OK; } } #if NVLAN > 0 /* Check for VLAN tagged packets. */ if (flags & JME_RD_VLAN_TAG) { m->m_pkthdr.ether_vtag = flags & JME_RD_VLAN_MASK; m->m_flags |= M_VLANTAG; } #endif #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp->if_bpf, m, BPF_DIRECTION_IN); #endif ifp->if_ipackets++; /* Pass it on. */ ether_input_mbuf(ifp, m); /* Reset mbuf chains. */ JME_RXCHAIN_RESET(sc); } } sc->jme_cdata.jme_rx_cons += nsegs; sc->jme_cdata.jme_rx_cons %= JME_RX_RING_CNT; } void jme_rxeof(struct jme_softc *sc) { struct jme_desc *desc; int nsegs, prog, pktlen; bus_dmamap_sync(sc->sc_dmat, sc->jme_cdata.jme_rx_ring_map, 0, sc->jme_cdata.jme_rx_ring_map->dm_mapsize, BUS_DMASYNC_POSTREAD); prog = 0; for (;;) { desc = &sc->jme_rdata.jme_rx_ring[sc->jme_cdata.jme_rx_cons]; if ((letoh32(desc->flags) & JME_RD_OWN) == JME_RD_OWN) break; if ((letoh32(desc->buflen) & JME_RD_VALID) == 0) break; /* * Check number of segments against received bytes. * Non-matching value would indicate that hardware * is still trying to update Rx descriptors. I'm not * sure whether this check is needed. */ nsegs = JME_RX_NSEGS(letoh32(desc->buflen)); pktlen = JME_RX_BYTES(letoh32(desc->buflen)); if (nsegs != howmany(pktlen, MCLBYTES)) { printf("%s: RX fragment count(%d) " "and packet size(%d) mismach\n", sc->sc_dev.dv_xname, nsegs, pktlen); break; } /* Received a frame. */ jme_rxpkt(sc); prog++; } if (prog > 0) { bus_dmamap_sync(sc->sc_dmat, sc->jme_cdata.jme_rx_ring_map, 0, sc->jme_cdata.jme_rx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); } } void jme_tick(void *xsc) { struct jme_softc *sc = xsc; struct mii_data *mii = &sc->sc_miibus; int s; s = splnet(); mii_tick(mii); timeout_add_sec(&sc->jme_tick_ch, 1); splx(s); } void jme_reset(struct jme_softc *sc) { #ifdef foo /* Stop receiver, transmitter. */ jme_stop_rx(sc); jme_stop_tx(sc); #endif CSR_WRITE_4(sc, JME_GHC, GHC_RESET); DELAY(10); CSR_WRITE_4(sc, JME_GHC, 0); } int jme_init(struct ifnet *ifp) { struct jme_softc *sc = ifp->if_softc; struct mii_data *mii; uint8_t eaddr[ETHER_ADDR_LEN]; bus_addr_t paddr; uint32_t reg; int error; /* * Cancel any pending I/O. */ jme_stop(sc); /* * Reset the chip to a known state. */ jme_reset(sc); /* * Since we always use 64bit address mode for transmitting, * each Tx request requires one more dummy descriptor. */ sc->jme_txd_spare = howmany(ifp->if_mtu + sizeof(struct ether_vlan_header), MCLBYTES) + 1; KASSERT(sc->jme_txd_spare >= 2); /* Init descriptors. */ error = jme_init_rx_ring(sc); if (error != 0) { printf("%s: initialization failed: no memory for Rx buffers.\n", sc->sc_dev.dv_xname); jme_stop(sc); return (1); } jme_init_tx_ring(sc); /* Initialize shadow status block. */ jme_init_ssb(sc); /* Reprogram the station address. */ bcopy(LLADDR(ifp->if_sadl), eaddr, ETHER_ADDR_LEN); CSR_WRITE_4(sc, JME_PAR0, eaddr[3] << 24 | eaddr[2] << 16 | eaddr[1] << 8 | eaddr[0]); CSR_WRITE_4(sc, JME_PAR1, eaddr[5] << 8 | eaddr[4]); /* * Configure Tx queue. * Tx priority queue weight value : 0 * Tx FIFO threshold for processing next packet : 16QW * Maximum Tx DMA length : 512 * Allow Tx DMA burst. */ sc->jme_txcsr = TXCSR_TXQ_N_SEL(TXCSR_TXQ0); sc->jme_txcsr |= TXCSR_TXQ_WEIGHT(TXCSR_TXQ_WEIGHT_MIN); sc->jme_txcsr |= TXCSR_FIFO_THRESH_16QW; sc->jme_txcsr |= sc->jme_tx_dma_size; sc->jme_txcsr |= TXCSR_DMA_BURST; CSR_WRITE_4(sc, JME_TXCSR, sc->jme_txcsr); /* Set Tx descriptor counter. */ CSR_WRITE_4(sc, JME_TXQDC, JME_TX_RING_CNT); /* Set Tx ring address to the hardware. */ paddr = JME_TX_RING_ADDR(sc, 0); CSR_WRITE_4(sc, JME_TXDBA_HI, JME_ADDR_HI(paddr)); CSR_WRITE_4(sc, JME_TXDBA_LO, JME_ADDR_LO(paddr)); /* Configure TxMAC parameters. */ reg = TXMAC_IFG1_DEFAULT | TXMAC_IFG2_DEFAULT | TXMAC_IFG_ENB; reg |= TXMAC_THRESH_1_PKT; reg |= TXMAC_CRC_ENB | TXMAC_PAD_ENB; CSR_WRITE_4(sc, JME_TXMAC, reg); /* * Configure Rx queue. * FIFO full threshold for transmitting Tx pause packet : 128T * FIFO threshold for processing next packet : 128QW * Rx queue 0 select * Max Rx DMA length : 128 * Rx descriptor retry : 32 * Rx descriptor retry time gap : 256ns * Don't receive runt/bad frame. */ sc->jme_rxcsr = RXCSR_FIFO_FTHRESH_128T; /* * Since Rx FIFO size is 4K bytes, receiving frames larger * than 4K bytes will suffer from Rx FIFO overruns. So * decrease FIFO threshold to reduce the FIFO overruns for * frames larger than 4000 bytes. * For best performance of standard MTU sized frames use * maximum allowable FIFO threshold, 128QW. */ if ((ifp->if_mtu + ETHER_HDR_LEN + ETHER_CRC_LEN + ETHER_VLAN_ENCAP_LEN) > JME_RX_FIFO_SIZE) sc->jme_rxcsr |= RXCSR_FIFO_THRESH_16QW; else sc->jme_rxcsr |= RXCSR_FIFO_THRESH_128QW; sc->jme_rxcsr |= sc->jme_rx_dma_size | RXCSR_RXQ_N_SEL(RXCSR_RXQ0); sc->jme_rxcsr |= RXCSR_DESC_RT_CNT(RXCSR_DESC_RT_CNT_DEFAULT); sc->jme_rxcsr |= RXCSR_DESC_RT_GAP_256 & RXCSR_DESC_RT_GAP_MASK; /* XXX TODO DROP_BAD */ CSR_WRITE_4(sc, JME_RXCSR, sc->jme_rxcsr); /* Set Rx descriptor counter. */ CSR_WRITE_4(sc, JME_RXQDC, JME_RX_RING_CNT); /* Set Rx ring address to the hardware. */ paddr = JME_RX_RING_ADDR(sc, 0); CSR_WRITE_4(sc, JME_RXDBA_HI, JME_ADDR_HI(paddr)); CSR_WRITE_4(sc, JME_RXDBA_LO, JME_ADDR_LO(paddr)); /* Clear receive filter. */ CSR_WRITE_4(sc, JME_RXMAC, 0); /* Set up the receive filter. */ jme_set_filter(sc); jme_set_vlan(sc); /* * Disable all WOL bits as WOL can interfere normal Rx * operation. Also clear WOL detection status bits. */ reg = CSR_READ_4(sc, JME_PMCS); reg &= ~PMCS_WOL_ENB_MASK; CSR_WRITE_4(sc, JME_PMCS, reg); /* * Pad 10bytes right before received frame. This will greatly * help Rx performance on strict-alignment architectures as * it does not need to copy the frame to align the payload. */ reg = CSR_READ_4(sc, JME_RXMAC); reg |= RXMAC_PAD_10BYTES; reg |= RXMAC_CSUM_ENB; CSR_WRITE_4(sc, JME_RXMAC, reg); /* Configure general purpose reg0 */ reg = CSR_READ_4(sc, JME_GPREG0); reg &= ~GPREG0_PCC_UNIT_MASK; /* Set PCC timer resolution to micro-seconds unit. */ reg |= GPREG0_PCC_UNIT_US; /* * Disable all shadow register posting as we have to read * JME_INTR_STATUS register in jme_intr. Also it seems * that it's hard to synchronize interrupt status between * hardware and software with shadow posting due to * requirements of bus_dmamap_sync(9). */ reg |= GPREG0_SH_POST_DW7_DIS | GPREG0_SH_POST_DW6_DIS | GPREG0_SH_POST_DW5_DIS | GPREG0_SH_POST_DW4_DIS | GPREG0_SH_POST_DW3_DIS | GPREG0_SH_POST_DW2_DIS | GPREG0_SH_POST_DW1_DIS | GPREG0_SH_POST_DW0_DIS; /* Disable posting of DW0. */ reg &= ~GPREG0_POST_DW0_ENB; /* Clear PME message. */ reg &= ~GPREG0_PME_ENB; /* Set PHY address. */ reg &= ~GPREG0_PHY_ADDR_MASK; reg |= sc->jme_phyaddr; CSR_WRITE_4(sc, JME_GPREG0, reg); /* Configure Tx queue 0 packet completion coalescing. */ sc->jme_tx_coal_to = PCCTX_COAL_TO_DEFAULT; reg = (sc->jme_tx_coal_to << PCCTX_COAL_TO_SHIFT) & PCCTX_COAL_TO_MASK; sc->jme_tx_coal_pkt = PCCTX_COAL_PKT_DEFAULT; reg |= (sc->jme_tx_coal_pkt << PCCTX_COAL_PKT_SHIFT) & PCCTX_COAL_PKT_MASK; reg |= PCCTX_COAL_TXQ0; CSR_WRITE_4(sc, JME_PCCTX, reg); /* Configure Rx queue 0 packet completion coalescing. */ sc->jme_rx_coal_to = PCCRX_COAL_TO_DEFAULT; reg = (sc->jme_rx_coal_to << PCCRX_COAL_TO_SHIFT) & PCCRX_COAL_TO_MASK; sc->jme_rx_coal_pkt = PCCRX_COAL_PKT_DEFAULT; reg |= (sc->jme_rx_coal_pkt << PCCRX_COAL_PKT_SHIFT) & PCCRX_COAL_PKT_MASK; CSR_WRITE_4(sc, JME_PCCRX0, reg); /* Configure shadow status block but don't enable posting. */ paddr = sc->jme_rdata.jme_ssb_block_paddr; CSR_WRITE_4(sc, JME_SHBASE_ADDR_HI, JME_ADDR_HI(paddr)); CSR_WRITE_4(sc, JME_SHBASE_ADDR_LO, JME_ADDR_LO(paddr)); /* Disable Timer 1 and Timer 2. */ CSR_WRITE_4(sc, JME_TIMER1, 0); CSR_WRITE_4(sc, JME_TIMER2, 0); /* Configure retry transmit period, retry limit value. */ CSR_WRITE_4(sc, JME_TXTRHD, ((TXTRHD_RT_PERIOD_DEFAULT << TXTRHD_RT_PERIOD_SHIFT) & TXTRHD_RT_PERIOD_MASK) | ((TXTRHD_RT_LIMIT_DEFAULT << TXTRHD_RT_LIMIT_SHIFT) & TXTRHD_RT_LIMIT_SHIFT)); /* Disable RSS. */ CSR_WRITE_4(sc, JME_RSSC, RSSC_DIS_RSS); /* Initialize the interrupt mask. */ CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS); CSR_WRITE_4(sc, JME_INTR_STATUS, 0xFFFFFFFF); /* * Enabling Tx/Rx DMA engines and Rx queue processing is * done after detection of valid link in jme_miibus_statchg. */ sc->jme_flags &= ~JME_FLAG_LINK; /* Set the current media. */ mii = &sc->sc_miibus; mii_mediachg(mii); timeout_add_sec(&sc->jme_tick_ch, 1); ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; return (0); } void jme_stop(struct jme_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; struct jme_txdesc *txd; struct jme_rxdesc *rxd; int i; /* * Mark the interface down and cancel the watchdog timer. */ ifp->if_flags &= ~(IFF_RUNNING | IFF_OACTIVE); ifp->if_timer = 0; timeout_del(&sc->jme_tick_ch); sc->jme_flags &= ~JME_FLAG_LINK; /* * Disable interrupts. */ CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS); CSR_WRITE_4(sc, JME_INTR_STATUS, 0xFFFFFFFF); /* Disable updating shadow status block. */ CSR_WRITE_4(sc, JME_SHBASE_ADDR_LO, CSR_READ_4(sc, JME_SHBASE_ADDR_LO) & ~SHBASE_POST_ENB); /* Stop receiver, transmitter. */ jme_stop_rx(sc); jme_stop_tx(sc); #ifdef foo /* Reclaim Rx/Tx buffers that have been completed. */ jme_rxeof(sc); if (sc->jme_cdata.jme_rxhead != NULL) m_freem(sc->jme_cdata.jme_rxhead); JME_RXCHAIN_RESET(sc); jme_txeof(sc); #endif /* * Free partial finished RX segments */ if (sc->jme_cdata.jme_rxhead != NULL) m_freem(sc->jme_cdata.jme_rxhead); JME_RXCHAIN_RESET(sc); /* * Free RX and TX mbufs still in the queues. */ for (i = 0; i < JME_RX_RING_CNT; i++) { rxd = &sc->jme_cdata.jme_rxdesc[i]; if (rxd->rx_m != NULL) { bus_dmamap_unload(sc->sc_dmat, rxd->rx_dmamap); m_freem(rxd->rx_m); rxd->rx_m = NULL; } } for (i = 0; i < JME_TX_RING_CNT; i++) { txd = &sc->jme_cdata.jme_txdesc[i]; if (txd->tx_m != NULL) { bus_dmamap_unload(sc->sc_dmat, txd->tx_dmamap); m_freem(txd->tx_m); txd->tx_m = NULL; txd->tx_ndesc = 0; } } } void jme_stop_tx(struct jme_softc *sc) { uint32_t reg; int i; reg = CSR_READ_4(sc, JME_TXCSR); if ((reg & TXCSR_TX_ENB) == 0) return; reg &= ~TXCSR_TX_ENB; CSR_WRITE_4(sc, JME_TXCSR, reg); for (i = JME_TIMEOUT; i > 0; i--) { DELAY(1); if ((CSR_READ_4(sc, JME_TXCSR) & TXCSR_TX_ENB) == 0) break; } if (i == 0) printf("%s: stopping transmitter timeout!\n", sc->sc_dev.dv_xname); } void jme_stop_rx(struct jme_softc *sc) { uint32_t reg; int i; reg = CSR_READ_4(sc, JME_RXCSR); if ((reg & RXCSR_RX_ENB) == 0) return; reg &= ~RXCSR_RX_ENB; CSR_WRITE_4(sc, JME_RXCSR, reg); for (i = JME_TIMEOUT; i > 0; i--) { DELAY(1); if ((CSR_READ_4(sc, JME_RXCSR) & RXCSR_RX_ENB) == 0) break; } if (i == 0) printf("%s: stopping recevier timeout!\n", sc->sc_dev.dv_xname); } void jme_init_tx_ring(struct jme_softc *sc) { struct jme_ring_data *rd; struct jme_txdesc *txd; int i; sc->jme_cdata.jme_tx_prod = 0; sc->jme_cdata.jme_tx_cons = 0; sc->jme_cdata.jme_tx_cnt = 0; rd = &sc->jme_rdata; bzero(rd->jme_tx_ring, JME_TX_RING_SIZE); for (i = 0; i < JME_TX_RING_CNT; i++) { txd = &sc->jme_cdata.jme_txdesc[i]; txd->tx_m = NULL; txd->tx_desc = &rd->jme_tx_ring[i]; txd->tx_ndesc = 0; } bus_dmamap_sync(sc->sc_dmat, sc->jme_cdata.jme_tx_ring_map, 0, sc->jme_cdata.jme_tx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); } void jme_init_ssb(struct jme_softc *sc) { struct jme_ring_data *rd; rd = &sc->jme_rdata; bzero(rd->jme_ssb_block, JME_SSB_SIZE); bus_dmamap_sync(sc->sc_dmat, sc->jme_cdata.jme_ssb_map, 0, sc->jme_cdata.jme_ssb_map->dm_mapsize, BUS_DMASYNC_PREWRITE); } int jme_init_rx_ring(struct jme_softc *sc) { struct jme_ring_data *rd; struct jme_rxdesc *rxd; int i; KASSERT(sc->jme_cdata.jme_rxhead == NULL && sc->jme_cdata.jme_rxtail == NULL && sc->jme_cdata.jme_rxlen == 0); sc->jme_cdata.jme_rx_cons = 0; rd = &sc->jme_rdata; bzero(rd->jme_rx_ring, JME_RX_RING_SIZE); for (i = 0; i < JME_RX_RING_CNT; i++) { int error; rxd = &sc->jme_cdata.jme_rxdesc[i]; rxd->rx_m = NULL; rxd->rx_desc = &rd->jme_rx_ring[i]; error = jme_newbuf(sc, rxd, 1); if (error) return (error); } bus_dmamap_sync(sc->sc_dmat, sc->jme_cdata.jme_rx_ring_map, 0, sc->jme_cdata.jme_rx_ring_map->dm_mapsize, BUS_DMASYNC_PREWRITE); return (0); } int jme_newbuf(struct jme_softc *sc, struct jme_rxdesc *rxd, int init) { struct jme_desc *desc; struct mbuf *m; bus_dmamap_t map; int error; 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)) { m_freem(m); return (ENOBUFS); } /* * JMC250 has 64bit boundary alignment limitation so jme(4) * takes advantage of 10 bytes padding feature of hardware * in order not to copy entire frame to align IP header on * 32bit boundary. */ m->m_len = m->m_pkthdr.len = MCLBYTES; error = bus_dmamap_load_mbuf(sc->sc_dmat, sc->jme_cdata.jme_rx_sparemap, m, BUS_DMA_NOWAIT); if (error != 0) { if (!error) { bus_dmamap_unload(sc->sc_dmat, sc->jme_cdata.jme_rx_sparemap); error = EFBIG; printf("%s: too many segments?!\n", sc->sc_dev.dv_xname); } m_freem(m); if (init) printf("%s: can't load RX mbuf\n", sc->sc_dev.dv_xname); return (error); } if (rxd->rx_m != NULL) { bus_dmamap_sync(sc->sc_dmat, rxd->rx_dmamap, 0, rxd->rx_dmamap->dm_mapsize, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->sc_dmat, rxd->rx_dmamap); } map = rxd->rx_dmamap; rxd->rx_dmamap = sc->jme_cdata.jme_rx_sparemap; sc->jme_cdata.jme_rx_sparemap = map; rxd->rx_m = m; desc = rxd->rx_desc; desc->buflen = htole32(rxd->rx_dmamap->dm_segs[0].ds_len); desc->addr_lo = htole32(JME_ADDR_LO(rxd->rx_dmamap->dm_segs[0].ds_addr)); desc->addr_hi = htole32(JME_ADDR_HI(rxd->rx_dmamap->dm_segs[0].ds_addr)); desc->flags = htole32(JME_RD_OWN | JME_RD_INTR | JME_RD_64BIT); return (0); } void jme_set_vlan(struct jme_softc *sc) { struct ifnet *ifp = &sc->sc_arpcom.ac_if; uint32_t reg; reg = CSR_READ_4(sc, JME_RXMAC); reg &= ~RXMAC_VLAN_ENB; if (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) reg |= RXMAC_VLAN_ENB; CSR_WRITE_4(sc, JME_RXMAC, reg); } void jme_set_filter(struct jme_softc *sc) { struct arpcom *ac = &sc->sc_arpcom; struct ifnet *ifp = &ac->ac_if; struct ether_multi *enm; struct ether_multistep step; uint32_t crc; uint32_t mchash[2]; uint32_t rxcfg; rxcfg = CSR_READ_4(sc, JME_RXMAC); rxcfg &= ~(RXMAC_BROADCAST | RXMAC_PROMISC | RXMAC_MULTICAST | RXMAC_ALLMULTI); /* * Always accept frames destined to our station address. * Always accept broadcast frames. */ rxcfg |= RXMAC_UNICAST | RXMAC_BROADCAST; if (ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) { if (ifp->if_flags & IFF_PROMISC) rxcfg |= RXMAC_PROMISC; if (ifp->if_flags & IFF_ALLMULTI) rxcfg |= RXMAC_ALLMULTI; CSR_WRITE_4(sc, JME_MAR0, 0xFFFFFFFF); CSR_WRITE_4(sc, JME_MAR1, 0xFFFFFFFF); CSR_WRITE_4(sc, JME_RXMAC, rxcfg); return; } /* * Set up the multicast address filter by passing all multicast * addresses through a CRC generator, and then using the low-order * 6 bits as an index into the 64 bit multicast hash table. The * high order bits select the register, while the rest of the bits * select the bit within the register. */ rxcfg |= RXMAC_MULTICAST; bzero(mchash, sizeof(mchash)); ETHER_FIRST_MULTI(step, ac, enm); while (enm != NULL) { crc = ether_crc32_be(LLADDR((struct sockaddr_dl *) enm->enm_addrlo), ETHER_ADDR_LEN); /* Just want the 6 least significant bits. */ crc &= 0x3f; /* Set the corresponding bit in the hash table. */ mchash[crc >> 5] |= 1 << (crc & 0x1f); ETHER_NEXT_MULTI(step, enm); } CSR_WRITE_4(sc, JME_MAR0, mchash[0]); CSR_WRITE_4(sc, JME_MAR1, mchash[1]); CSR_WRITE_4(sc, JME_RXMAC, rxcfg); }