/*- * 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. */ #include __FBSDID("$FreeBSD$"); #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* "device miibus" required. See GENERIC if you get errors here. */ #include "miibus_if.h" /* Define the following to disable printing Rx errors. */ #undef JME_SHOW_ERRORS #define JME_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP) MODULE_DEPEND(jme, pci, 1, 1, 1); MODULE_DEPEND(jme, ether, 1, 1, 1); MODULE_DEPEND(jme, miibus, 1, 1, 1); /* Tunables. */ static int msi_disable = 0; static int msix_disable = 0; TUNABLE_INT("hw.jme.msi_disable", &msi_disable); TUNABLE_INT("hw.jme.msix_disable", &msix_disable); /* * Devices supported by this driver. */ static struct jme_dev { uint16_t jme_vendorid; uint16_t jme_deviceid; const char *jme_name; } jme_devs[] = { { VENDORID_JMICRON, DEVICEID_JMC250, "JMicron Inc, JMC25x Gigabit Ethernet" }, { VENDORID_JMICRON, DEVICEID_JMC260, "JMicron Inc, JMC26x Fast Ethernet" }, }; static int jme_miibus_readreg(device_t, int, int); static int jme_miibus_writereg(device_t, int, int, int); static void jme_miibus_statchg(device_t); static void jme_mediastatus(struct ifnet *, struct ifmediareq *); static int jme_mediachange(struct ifnet *); static int jme_probe(device_t); static int jme_eeprom_read_byte(struct jme_softc *, uint8_t, uint8_t *); static int jme_eeprom_macaddr(struct jme_softc *); static int jme_efuse_macaddr(struct jme_softc *); static void jme_reg_macaddr(struct jme_softc *); static void jme_set_macaddr(struct jme_softc *, uint8_t *); static void jme_map_intr_vector(struct jme_softc *); static int jme_attach(device_t); static int jme_detach(device_t); static void jme_sysctl_node(struct jme_softc *); static void jme_dmamap_cb(void *, bus_dma_segment_t *, int, int); static int jme_dma_alloc(struct jme_softc *); static void jme_dma_free(struct jme_softc *); static int jme_shutdown(device_t); static void jme_setlinkspeed(struct jme_softc *); static void jme_setwol(struct jme_softc *); static int jme_suspend(device_t); static int jme_resume(device_t); static int jme_encap(struct jme_softc *, struct mbuf **); static void jme_start(struct ifnet *); static void jme_start_locked(struct ifnet *); static void jme_watchdog(struct jme_softc *); static int jme_ioctl(struct ifnet *, u_long, caddr_t); static void jme_mac_config(struct jme_softc *); static void jme_link_task(void *, int); static int jme_intr(void *); static void jme_int_task(void *, int); static void jme_txeof(struct jme_softc *); static __inline void jme_discard_rxbuf(struct jme_softc *, int); static void jme_rxeof(struct jme_softc *); static int jme_rxintr(struct jme_softc *, int); static void jme_tick(void *); static void jme_reset(struct jme_softc *); static void jme_init(void *); static void jme_init_locked(struct jme_softc *); static void jme_stop(struct jme_softc *); static void jme_stop_tx(struct jme_softc *); static void jme_stop_rx(struct jme_softc *); static int jme_init_rx_ring(struct jme_softc *); static void jme_init_tx_ring(struct jme_softc *); static void jme_init_ssb(struct jme_softc *); static int jme_newbuf(struct jme_softc *, struct jme_rxdesc *); static void jme_set_vlan(struct jme_softc *); static void jme_set_filter(struct jme_softc *); static void jme_stats_clear(struct jme_softc *); static void jme_stats_save(struct jme_softc *); static void jme_stats_update(struct jme_softc *); static void jme_phy_down(struct jme_softc *); static void jme_phy_up(struct jme_softc *); static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int, int); static int sysctl_hw_jme_tx_coal_to(SYSCTL_HANDLER_ARGS); static int sysctl_hw_jme_tx_coal_pkt(SYSCTL_HANDLER_ARGS); static int sysctl_hw_jme_rx_coal_to(SYSCTL_HANDLER_ARGS); static int sysctl_hw_jme_rx_coal_pkt(SYSCTL_HANDLER_ARGS); static int sysctl_hw_jme_proc_limit(SYSCTL_HANDLER_ARGS); static device_method_t jme_methods[] = { /* Device interface. */ DEVMETHOD(device_probe, jme_probe), DEVMETHOD(device_attach, jme_attach), DEVMETHOD(device_detach, jme_detach), DEVMETHOD(device_shutdown, jme_shutdown), DEVMETHOD(device_suspend, jme_suspend), DEVMETHOD(device_resume, jme_resume), /* MII interface. */ DEVMETHOD(miibus_readreg, jme_miibus_readreg), DEVMETHOD(miibus_writereg, jme_miibus_writereg), DEVMETHOD(miibus_statchg, jme_miibus_statchg), { NULL, NULL } }; static driver_t jme_driver = { "jme", jme_methods, sizeof(struct jme_softc) }; static devclass_t jme_devclass; DRIVER_MODULE(jme, pci, jme_driver, jme_devclass, 0, 0); DRIVER_MODULE(miibus, jme, miibus_driver, miibus_devclass, 0, 0); static struct resource_spec jme_res_spec_mem[] = { { SYS_RES_MEMORY, PCIR_BAR(0), RF_ACTIVE }, { -1, 0, 0 } }; static struct resource_spec jme_irq_spec_legacy[] = { { SYS_RES_IRQ, 0, RF_ACTIVE | RF_SHAREABLE }, { -1, 0, 0 } }; static struct resource_spec jme_irq_spec_msi[] = { { SYS_RES_IRQ, 1, RF_ACTIVE }, { -1, 0, 0 } }; /* * Read a PHY register on the MII of the JMC250. */ static int jme_miibus_readreg(device_t dev, int phy, int reg) { struct jme_softc *sc; uint32_t val; int i; sc = device_get_softc(dev); /* For FPGA version, PHY address 0 should be ignored. */ if ((sc->jme_flags & JME_FLAG_FPGA) != 0 && phy == 0) 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) { device_printf(sc->jme_dev, "phy read timeout : %d\n", reg); return (0); } return ((val & SMI_DATA_MASK) >> SMI_DATA_SHIFT); } /* * Write a PHY register on the MII of the JMC250. */ static int jme_miibus_writereg(device_t dev, int phy, int reg, int val) { struct jme_softc *sc; int i; sc = device_get_softc(dev); /* For FPGA version, PHY address 0 should be ignored. */ if ((sc->jme_flags & JME_FLAG_FPGA) != 0 && phy == 0) return (0); 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) device_printf(sc->jme_dev, "phy write timeout : %d\n", reg); return (0); } /* * Callback from MII layer when media changes. */ static void jme_miibus_statchg(device_t dev) { struct jme_softc *sc; sc = device_get_softc(dev); taskqueue_enqueue(taskqueue_swi, &sc->jme_link_task); } /* * Get the current interface media status. */ static void jme_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr) { struct jme_softc *sc; struct mii_data *mii; sc = ifp->if_softc; JME_LOCK(sc); if ((ifp->if_flags & IFF_UP) == 0) { JME_UNLOCK(sc); return; } mii = device_get_softc(sc->jme_miibus); mii_pollstat(mii); ifmr->ifm_status = mii->mii_media_status; ifmr->ifm_active = mii->mii_media_active; JME_UNLOCK(sc); } /* * Set hardware to newly-selected media. */ static int jme_mediachange(struct ifnet *ifp) { struct jme_softc *sc; struct mii_data *mii; struct mii_softc *miisc; int error; sc = ifp->if_softc; JME_LOCK(sc); mii = device_get_softc(sc->jme_miibus); if (mii->mii_instance != 0) { LIST_FOREACH(miisc, &mii->mii_phys, mii_list) mii_phy_reset(miisc); } error = mii_mediachg(mii); JME_UNLOCK(sc); return (error); } static int jme_probe(device_t dev) { struct jme_dev *sp; int i; uint16_t vendor, devid; vendor = pci_get_vendor(dev); devid = pci_get_device(dev); sp = jme_devs; for (i = 0; i < sizeof(jme_devs) / sizeof(jme_devs[0]); i++, sp++) { if (vendor == sp->jme_vendorid && devid == sp->jme_deviceid) { device_set_desc(dev, sp->jme_name); return (BUS_PROBE_DEFAULT); } } return (ENXIO); } static 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) { device_printf(sc->jme_dev, "EEPROM idle timeout!\n"); 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) { device_printf(sc->jme_dev, "EEPROM read timeout!\n"); return (ETIMEDOUT); } reg = CSR_READ_4(sc, JME_SMBINTF); *val = (reg & SMBINTF_RD_DATA_MASK) >> SMBINTF_RD_DATA_SHIFT; return (0); } static int jme_eeprom_macaddr(struct jme_softc *sc) { uint8_t eaddr[ETHER_ADDR_LEN]; 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; if (JME_EEPROM_MKDESC(JME_EEPROM_FUNC0, JME_EEPROM_PAGE_BAR1) == (fup & (JME_EEPROM_FUNC_MASK | JME_EEPROM_PAGE_MASK))) { 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++; } } /* Check for the end of EEPROM descriptor. */ if ((fup & JME_EEPROM_DESC_END) == JME_EEPROM_DESC_END) break; /* Try next eeprom descriptor. */ offset += JME_EEPROM_DESC_BYTES; } while (match != ETHER_ADDR_LEN && offset < JME_EEPROM_END); if (match == ETHER_ADDR_LEN) { bcopy(eaddr, sc->jme_eaddr, ETHER_ADDR_LEN); return (0); } return (ENOENT); } static int jme_efuse_macaddr(struct jme_softc *sc) { uint32_t reg; int i; reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL1, 4); if ((reg & (EFUSE_CTL1_AUTOLOAD_ERR | EFUSE_CTL1_AUTOLAOD_DONE)) != EFUSE_CTL1_AUTOLAOD_DONE) return (ENOENT); /* Reset eFuse controller. */ reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL2, 4); reg |= EFUSE_CTL2_RESET; pci_write_config(sc->jme_dev, JME_EFUSE_CTL2, reg, 4); reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL2, 4); reg &= ~EFUSE_CTL2_RESET; pci_write_config(sc->jme_dev, JME_EFUSE_CTL2, reg, 4); /* Have eFuse reload station address to MAC controller. */ reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL1, 4); reg &= ~EFUSE_CTL1_CMD_MASK; reg |= EFUSE_CTL1_CMD_AUTOLOAD | EFUSE_CTL1_EXECUTE; pci_write_config(sc->jme_dev, JME_EFUSE_CTL1, reg, 4); /* * Verify completion of eFuse autload command. It should be * completed within 108us. */ DELAY(110); for (i = 10; i > 0; i--) { reg = pci_read_config(sc->jme_dev, JME_EFUSE_CTL1, 4); if ((reg & (EFUSE_CTL1_AUTOLOAD_ERR | EFUSE_CTL1_AUTOLAOD_DONE)) != EFUSE_CTL1_AUTOLAOD_DONE) { DELAY(20); continue; } if ((reg & EFUSE_CTL1_EXECUTE) == 0) break; /* Station address loading is still in progress. */ DELAY(20); } if (i == 0) { device_printf(sc->jme_dev, "eFuse autoload timed out.\n"); return (ETIMEDOUT); } return (0); } static void jme_reg_macaddr(struct jme_softc *sc) { uint32_t par0, par1; /* Read station address. */ par0 = CSR_READ_4(sc, JME_PAR0); par1 = CSR_READ_4(sc, JME_PAR1); par1 &= 0xFFFF; if ((par0 == 0 && par1 == 0) || (par0 == 0xFFFFFFFF && par1 == 0xFFFF)) { device_printf(sc->jme_dev, "Failed to retrieve Ethernet address.\n"); } else { /* * For controllers that use eFuse, the station address * could also be extracted from JME_PCI_PAR0 and * JME_PCI_PAR1 registers in PCI configuration space. * Each register holds exactly half of station address(24bits) * so use JME_PAR0, JME_PAR1 registers instead. */ sc->jme_eaddr[0] = (par0 >> 0) & 0xFF; sc->jme_eaddr[1] = (par0 >> 8) & 0xFF; sc->jme_eaddr[2] = (par0 >> 16) & 0xFF; sc->jme_eaddr[3] = (par0 >> 24) & 0xFF; sc->jme_eaddr[4] = (par1 >> 0) & 0xFF; sc->jme_eaddr[5] = (par1 >> 8) & 0xFF; } } static void jme_set_macaddr(struct jme_softc *sc, uint8_t *eaddr) { uint32_t val; int i; if ((sc->jme_flags & JME_FLAG_EFUSE) != 0) { /* * Avoid reprogramming station address if the address * is the same as previous one. Note, reprogrammed * station address is permanent as if it was written * to EEPROM. So if station address was changed by * admistrator it's possible to lose factory configured * address when driver fails to restore its address. * (e.g. reboot or system crash) */ if (bcmp(eaddr, sc->jme_eaddr, ETHER_ADDR_LEN) != 0) { for (i = 0; i < ETHER_ADDR_LEN; i++) { val = JME_EFUSE_EEPROM_FUNC0 << JME_EFUSE_EEPROM_FUNC_SHIFT; val |= JME_EFUSE_EEPROM_PAGE_BAR1 << JME_EFUSE_EEPROM_PAGE_SHIFT; val |= (JME_PAR0 + i) << JME_EFUSE_EEPROM_ADDR_SHIFT; val |= eaddr[i] << JME_EFUSE_EEPROM_DATA_SHIFT; pci_write_config(sc->jme_dev, JME_EFUSE_EEPROM, val | JME_EFUSE_EEPROM_WRITE, 4); } } } else { 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]); } } static void jme_map_intr_vector(struct jme_softc *sc) { uint32_t map[MSINUM_NUM_INTR_SOURCE / JME_MSI_MESSAGES]; bzero(map, sizeof(map)); /* Map Tx interrupts source to MSI/MSIX vector 2. */ map[MSINUM_REG_INDEX(N_INTR_TXQ0_COMP)] = MSINUM_INTR_SOURCE(2, N_INTR_TXQ0_COMP); map[MSINUM_REG_INDEX(N_INTR_TXQ1_COMP)] |= MSINUM_INTR_SOURCE(2, N_INTR_TXQ1_COMP); map[MSINUM_REG_INDEX(N_INTR_TXQ2_COMP)] |= MSINUM_INTR_SOURCE(2, N_INTR_TXQ2_COMP); map[MSINUM_REG_INDEX(N_INTR_TXQ3_COMP)] |= MSINUM_INTR_SOURCE(2, N_INTR_TXQ3_COMP); map[MSINUM_REG_INDEX(N_INTR_TXQ4_COMP)] |= MSINUM_INTR_SOURCE(2, N_INTR_TXQ4_COMP); map[MSINUM_REG_INDEX(N_INTR_TXQ4_COMP)] |= MSINUM_INTR_SOURCE(2, N_INTR_TXQ5_COMP); map[MSINUM_REG_INDEX(N_INTR_TXQ6_COMP)] |= MSINUM_INTR_SOURCE(2, N_INTR_TXQ6_COMP); map[MSINUM_REG_INDEX(N_INTR_TXQ7_COMP)] |= MSINUM_INTR_SOURCE(2, N_INTR_TXQ7_COMP); map[MSINUM_REG_INDEX(N_INTR_TXQ_COAL)] |= MSINUM_INTR_SOURCE(2, N_INTR_TXQ_COAL); map[MSINUM_REG_INDEX(N_INTR_TXQ_COAL_TO)] |= MSINUM_INTR_SOURCE(2, N_INTR_TXQ_COAL_TO); /* Map Rx interrupts source to MSI/MSIX vector 1. */ map[MSINUM_REG_INDEX(N_INTR_RXQ0_COMP)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ0_COMP); map[MSINUM_REG_INDEX(N_INTR_RXQ1_COMP)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ1_COMP); map[MSINUM_REG_INDEX(N_INTR_RXQ2_COMP)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ2_COMP); map[MSINUM_REG_INDEX(N_INTR_RXQ3_COMP)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ3_COMP); map[MSINUM_REG_INDEX(N_INTR_RXQ0_DESC_EMPTY)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ0_DESC_EMPTY); map[MSINUM_REG_INDEX(N_INTR_RXQ1_DESC_EMPTY)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ1_DESC_EMPTY); map[MSINUM_REG_INDEX(N_INTR_RXQ2_DESC_EMPTY)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ2_DESC_EMPTY); map[MSINUM_REG_INDEX(N_INTR_RXQ3_DESC_EMPTY)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ3_DESC_EMPTY); map[MSINUM_REG_INDEX(N_INTR_RXQ0_COAL)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ0_COAL); map[MSINUM_REG_INDEX(N_INTR_RXQ1_COAL)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ1_COAL); map[MSINUM_REG_INDEX(N_INTR_RXQ2_COAL)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ2_COAL); map[MSINUM_REG_INDEX(N_INTR_RXQ3_COAL)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ3_COAL); map[MSINUM_REG_INDEX(N_INTR_RXQ0_COAL_TO)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ0_COAL_TO); map[MSINUM_REG_INDEX(N_INTR_RXQ1_COAL_TO)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ1_COAL_TO); map[MSINUM_REG_INDEX(N_INTR_RXQ2_COAL_TO)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ2_COAL_TO); map[MSINUM_REG_INDEX(N_INTR_RXQ3_COAL_TO)] = MSINUM_INTR_SOURCE(1, N_INTR_RXQ3_COAL_TO); /* Map all other interrupts source to MSI/MSIX vector 0. */ CSR_WRITE_4(sc, JME_MSINUM_BASE + sizeof(uint32_t) * 0, map[0]); CSR_WRITE_4(sc, JME_MSINUM_BASE + sizeof(uint32_t) * 1, map[1]); CSR_WRITE_4(sc, JME_MSINUM_BASE + sizeof(uint32_t) * 2, map[2]); CSR_WRITE_4(sc, JME_MSINUM_BASE + sizeof(uint32_t) * 3, map[3]); } static int jme_attach(device_t dev) { struct jme_softc *sc; struct ifnet *ifp; struct mii_softc *miisc; struct mii_data *mii; uint32_t reg; uint16_t burst; int error, i, mii_flags, msic, msixc, pmc; error = 0; sc = device_get_softc(dev); sc->jme_dev = dev; mtx_init(&sc->jme_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, MTX_DEF); callout_init_mtx(&sc->jme_tick_ch, &sc->jme_mtx, 0); TASK_INIT(&sc->jme_int_task, 0, jme_int_task, sc); TASK_INIT(&sc->jme_link_task, 0, jme_link_task, sc); /* * Map the device. 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. */ pci_enable_busmaster(dev); sc->jme_res_spec = jme_res_spec_mem; sc->jme_irq_spec = jme_irq_spec_legacy; error = bus_alloc_resources(dev, sc->jme_res_spec, sc->jme_res); if (error != 0) { device_printf(dev, "cannot allocate memory resources.\n"); goto fail; } /* Allocate IRQ resources. */ msixc = pci_msix_count(dev); msic = pci_msi_count(dev); if (bootverbose) { device_printf(dev, "MSIX count : %d\n", msixc); device_printf(dev, "MSI count : %d\n", msic); } /* Use 1 MSI/MSI-X. */ if (msixc > 1) msixc = 1; if (msic > 1) msic = 1; /* Prefer MSIX over MSI. */ if (msix_disable == 0 || msi_disable == 0) { if (msix_disable == 0 && msixc > 0 && pci_alloc_msix(dev, &msixc) == 0) { if (msixc == 1) { device_printf(dev, "Using %d MSIX messages.\n", msixc); sc->jme_flags |= JME_FLAG_MSIX; sc->jme_irq_spec = jme_irq_spec_msi; } else pci_release_msi(dev); } if (msi_disable == 0 && (sc->jme_flags & JME_FLAG_MSIX) == 0 && msic > 0 && pci_alloc_msi(dev, &msic) == 0) { if (msic == 1) { device_printf(dev, "Using %d MSI messages.\n", msic); sc->jme_flags |= JME_FLAG_MSI; sc->jme_irq_spec = jme_irq_spec_msi; } else pci_release_msi(dev); } /* Map interrupt vector 0, 1 and 2. */ if ((sc->jme_flags & JME_FLAG_MSI) != 0 || (sc->jme_flags & JME_FLAG_MSIX) != 0) jme_map_intr_vector(sc); } error = bus_alloc_resources(dev, sc->jme_irq_spec, sc->jme_irq); if (error != 0) { device_printf(dev, "cannot allocate IRQ resources.\n"); goto fail; } sc->jme_rev = pci_get_device(dev); if ((sc->jme_rev & DEVICEID_JMC2XX_MASK) == DEVICEID_JMC260) { sc->jme_flags |= JME_FLAG_FASTETH; sc->jme_flags |= JME_FLAG_NOJUMBO; } reg = CSR_READ_4(sc, JME_CHIPMODE); sc->jme_chip_rev = (reg & CHIPMODE_REV_MASK) >> CHIPMODE_REV_SHIFT; if (((reg & CHIPMODE_FPGA_REV_MASK) >> CHIPMODE_FPGA_REV_SHIFT) != CHIPMODE_NOT_FPGA) sc->jme_flags |= JME_FLAG_FPGA; if (bootverbose) { device_printf(dev, "PCI device revision : 0x%04x\n", sc->jme_rev); device_printf(dev, "Chip revision : 0x%02x\n", sc->jme_chip_rev); if ((sc->jme_flags & JME_FLAG_FPGA) != 0) device_printf(dev, "FPGA revision : 0x%04x\n", (reg & CHIPMODE_FPGA_REV_MASK) >> CHIPMODE_FPGA_REV_SHIFT); } if (sc->jme_chip_rev == 0xFF) { device_printf(dev, "Unknown chip revision : 0x%02x\n", sc->jme_rev); error = ENXIO; goto fail; } /* Identify controller features and bugs. */ if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 2) { if ((sc->jme_rev & DEVICEID_JMC2XX_MASK) == DEVICEID_JMC260 && CHIPMODE_REVFM(sc->jme_chip_rev) == 2) sc->jme_flags |= JME_FLAG_DMA32BIT; if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 5) sc->jme_flags |= JME_FLAG_EFUSE | JME_FLAG_PCCPCD; sc->jme_flags |= JME_FLAG_TXCLK | JME_FLAG_RXCLK; sc->jme_flags |= JME_FLAG_HWMIB; } /* Reset the ethernet controller. */ jme_reset(sc); /* Get station address. */ if ((sc->jme_flags & JME_FLAG_EFUSE) != 0) { error = jme_efuse_macaddr(sc); if (error == 0) jme_reg_macaddr(sc); } else { error = ENOENT; reg = CSR_READ_4(sc, JME_SMBCSR); if ((reg & SMBCSR_EEPROM_PRESENT) != 0) error = jme_eeprom_macaddr(sc); if (error != 0 && bootverbose) device_printf(sc->jme_dev, "ethernet hardware address not found in EEPROM.\n"); if (error != 0) jme_reg_macaddr(sc); } /* * Save PHY address. * Integrated JR0211 has fixed PHY address whereas FPGA version * requires PHY probing to get correct PHY address. */ if ((sc->jme_flags & JME_FLAG_FPGA) == 0) { sc->jme_phyaddr = CSR_READ_4(sc, JME_GPREG0) & GPREG0_PHY_ADDR_MASK; if (bootverbose) device_printf(dev, "PHY is at address %d.\n", sc->jme_phyaddr); } else sc->jme_phyaddr = 0; /* Set max allowable DMA size. */ if (pci_find_cap(dev, PCIY_EXPRESS, &i) == 0) { sc->jme_flags |= JME_FLAG_PCIE; burst = pci_read_config(dev, i + PCIR_EXPRESS_DEVICE_CTL, 2); if (bootverbose) { device_printf(dev, "Read request size : %d bytes.\n", 128 << ((burst >> 12) & 0x07)); device_printf(dev, "TLP payload size : %d bytes.\n", 128 << ((burst >> 5) & 0x07)); } switch ((burst >> 12) & 0x07) { case 0: sc->jme_tx_dma_size = TXCSR_DMA_SIZE_128; break; case 1: sc->jme_tx_dma_size = TXCSR_DMA_SIZE_256; break; default: sc->jme_tx_dma_size = TXCSR_DMA_SIZE_512; break; } sc->jme_rx_dma_size = RXCSR_DMA_SIZE_128; } else { sc->jme_tx_dma_size = TXCSR_DMA_SIZE_512; sc->jme_rx_dma_size = RXCSR_DMA_SIZE_128; } /* Create coalescing sysctl node. */ jme_sysctl_node(sc); if ((error = jme_dma_alloc(sc) != 0)) goto fail; ifp = sc->jme_ifp = if_alloc(IFT_ETHER); if (ifp == NULL) { device_printf(dev, "cannot allocate ifnet structure.\n"); error = ENXIO; goto fail; } ifp->if_softc = sc; if_initname(ifp, device_get_name(dev), device_get_unit(dev)); ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = jme_ioctl; ifp->if_start = jme_start; ifp->if_init = jme_init; ifp->if_snd.ifq_drv_maxlen = JME_TX_RING_CNT - 1; IFQ_SET_MAXLEN(&ifp->if_snd, ifp->if_snd.ifq_drv_maxlen); IFQ_SET_READY(&ifp->if_snd); /* JMC250 supports Tx/Rx checksum offload as well as TSO. */ ifp->if_capabilities = IFCAP_HWCSUM | IFCAP_TSO4; ifp->if_hwassist = JME_CSUM_FEATURES | CSUM_TSO; if (pci_find_cap(dev, PCIY_PMG, &pmc) == 0) { sc->jme_flags |= JME_FLAG_PMCAP; ifp->if_capabilities |= IFCAP_WOL_MAGIC; } ifp->if_capenable = ifp->if_capabilities; /* Wakeup PHY. */ jme_phy_up(sc); mii_flags = MIIF_DOPAUSE; /* Ask PHY calibration to PHY driver. */ if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 5) mii_flags |= MIIF_MACPRIV0; /* Set up MII bus. */ error = mii_attach(dev, &sc->jme_miibus, ifp, jme_mediachange, jme_mediastatus, BMSR_DEFCAPMASK, sc->jme_flags & JME_FLAG_FPGA ? MII_PHY_ANY : sc->jme_phyaddr, MII_OFFSET_ANY, mii_flags); if (error != 0) { device_printf(dev, "attaching PHYs failed\n"); goto fail; } /* * Force PHY to FPGA mode. */ if ((sc->jme_flags & JME_FLAG_FPGA) != 0) { mii = device_get_softc(sc->jme_miibus); if (mii->mii_instance != 0) { LIST_FOREACH(miisc, &mii->mii_phys, mii_list) { if (miisc->mii_phy != 0) { sc->jme_phyaddr = miisc->mii_phy; break; } } if (sc->jme_phyaddr != 0) { device_printf(sc->jme_dev, "FPGA PHY is at %d\n", sc->jme_phyaddr); /* vendor magic. */ jme_miibus_writereg(dev, sc->jme_phyaddr, 27, 0x0004); } } } ether_ifattach(ifp, sc->jme_eaddr); /* VLAN capability setup */ ifp->if_capabilities |= IFCAP_VLAN_MTU | IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_HWCSUM | IFCAP_VLAN_HWTSO; ifp->if_capenable = ifp->if_capabilities; /* Tell the upper layer(s) we support long frames. */ ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header); /* Create local taskq. */ sc->jme_tq = taskqueue_create_fast("jme_taskq", M_WAITOK, taskqueue_thread_enqueue, &sc->jme_tq); if (sc->jme_tq == NULL) { device_printf(dev, "could not create taskqueue.\n"); ether_ifdetach(ifp); error = ENXIO; goto fail; } taskqueue_start_threads(&sc->jme_tq, 1, PI_NET, "%s taskq", device_get_nameunit(sc->jme_dev)); for (i = 0; i < 1; i++) { error = bus_setup_intr(dev, sc->jme_irq[i], INTR_TYPE_NET | INTR_MPSAFE, jme_intr, NULL, sc, &sc->jme_intrhand[i]); if (error != 0) break; } if (error != 0) { device_printf(dev, "could not set up interrupt handler.\n"); taskqueue_free(sc->jme_tq); sc->jme_tq = NULL; ether_ifdetach(ifp); goto fail; } fail: if (error != 0) jme_detach(dev); return (error); } static int jme_detach(device_t dev) { struct jme_softc *sc; struct ifnet *ifp; int i; sc = device_get_softc(dev); ifp = sc->jme_ifp; if (device_is_attached(dev)) { JME_LOCK(sc); sc->jme_flags |= JME_FLAG_DETACH; jme_stop(sc); JME_UNLOCK(sc); callout_drain(&sc->jme_tick_ch); taskqueue_drain(sc->jme_tq, &sc->jme_int_task); taskqueue_drain(taskqueue_swi, &sc->jme_link_task); /* Restore possibly modified station address. */ if ((sc->jme_flags & JME_FLAG_EFUSE) != 0) jme_set_macaddr(sc, sc->jme_eaddr); ether_ifdetach(ifp); } if (sc->jme_tq != NULL) { taskqueue_drain(sc->jme_tq, &sc->jme_int_task); taskqueue_free(sc->jme_tq); sc->jme_tq = NULL; } if (sc->jme_miibus != NULL) { device_delete_child(dev, sc->jme_miibus); sc->jme_miibus = NULL; } bus_generic_detach(dev); jme_dma_free(sc); if (ifp != NULL) { if_free(ifp); sc->jme_ifp = NULL; } for (i = 0; i < 1; i++) { if (sc->jme_intrhand[i] != NULL) { bus_teardown_intr(dev, sc->jme_irq[i], sc->jme_intrhand[i]); sc->jme_intrhand[i] = NULL; } } if (sc->jme_irq[0] != NULL) bus_release_resources(dev, sc->jme_irq_spec, sc->jme_irq); if ((sc->jme_flags & (JME_FLAG_MSIX | JME_FLAG_MSI)) != 0) pci_release_msi(dev); if (sc->jme_res[0] != NULL) bus_release_resources(dev, sc->jme_res_spec, sc->jme_res); mtx_destroy(&sc->jme_mtx); return (0); } #define JME_SYSCTL_STAT_ADD32(c, h, n, p, d) \ SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d) static void jme_sysctl_node(struct jme_softc *sc) { struct sysctl_ctx_list *ctx; struct sysctl_oid_list *child, *parent; struct sysctl_oid *tree; struct jme_hw_stats *stats; int error; stats = &sc->jme_stats; ctx = device_get_sysctl_ctx(sc->jme_dev); child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->jme_dev)); SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "tx_coal_to", CTLTYPE_INT | CTLFLAG_RW, &sc->jme_tx_coal_to, 0, sysctl_hw_jme_tx_coal_to, "I", "jme tx coalescing timeout"); SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "tx_coal_pkt", CTLTYPE_INT | CTLFLAG_RW, &sc->jme_tx_coal_pkt, 0, sysctl_hw_jme_tx_coal_pkt, "I", "jme tx coalescing packet"); SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_coal_to", CTLTYPE_INT | CTLFLAG_RW, &sc->jme_rx_coal_to, 0, sysctl_hw_jme_rx_coal_to, "I", "jme rx coalescing timeout"); SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "rx_coal_pkt", CTLTYPE_INT | CTLFLAG_RW, &sc->jme_rx_coal_pkt, 0, sysctl_hw_jme_rx_coal_pkt, "I", "jme rx coalescing packet"); SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit", CTLTYPE_INT | CTLFLAG_RW, &sc->jme_process_limit, 0, sysctl_hw_jme_proc_limit, "I", "max number of Rx events to process"); /* Pull in device tunables. */ sc->jme_process_limit = JME_PROC_DEFAULT; error = resource_int_value(device_get_name(sc->jme_dev), device_get_unit(sc->jme_dev), "process_limit", &sc->jme_process_limit); if (error == 0) { if (sc->jme_process_limit < JME_PROC_MIN || sc->jme_process_limit > JME_PROC_MAX) { device_printf(sc->jme_dev, "process_limit value out of range; " "using default: %d\n", JME_PROC_DEFAULT); sc->jme_process_limit = JME_PROC_DEFAULT; } } sc->jme_tx_coal_to = PCCTX_COAL_TO_DEFAULT; error = resource_int_value(device_get_name(sc->jme_dev), device_get_unit(sc->jme_dev), "tx_coal_to", &sc->jme_tx_coal_to); if (error == 0) { if (sc->jme_tx_coal_to < PCCTX_COAL_TO_MIN || sc->jme_tx_coal_to > PCCTX_COAL_TO_MAX) { device_printf(sc->jme_dev, "tx_coal_to value out of range; " "using default: %d\n", PCCTX_COAL_TO_DEFAULT); sc->jme_tx_coal_to = PCCTX_COAL_TO_DEFAULT; } } sc->jme_tx_coal_pkt = PCCTX_COAL_PKT_DEFAULT; error = resource_int_value(device_get_name(sc->jme_dev), device_get_unit(sc->jme_dev), "tx_coal_pkt", &sc->jme_tx_coal_to); if (error == 0) { if (sc->jme_tx_coal_pkt < PCCTX_COAL_PKT_MIN || sc->jme_tx_coal_pkt > PCCTX_COAL_PKT_MAX) { device_printf(sc->jme_dev, "tx_coal_pkt value out of range; " "using default: %d\n", PCCTX_COAL_PKT_DEFAULT); sc->jme_tx_coal_pkt = PCCTX_COAL_PKT_DEFAULT; } } sc->jme_rx_coal_to = PCCRX_COAL_TO_DEFAULT; error = resource_int_value(device_get_name(sc->jme_dev), device_get_unit(sc->jme_dev), "rx_coal_to", &sc->jme_rx_coal_to); if (error == 0) { if (sc->jme_rx_coal_to < PCCRX_COAL_TO_MIN || sc->jme_rx_coal_to > PCCRX_COAL_TO_MAX) { device_printf(sc->jme_dev, "rx_coal_to value out of range; " "using default: %d\n", PCCRX_COAL_TO_DEFAULT); sc->jme_rx_coal_to = PCCRX_COAL_TO_DEFAULT; } } sc->jme_rx_coal_pkt = PCCRX_COAL_PKT_DEFAULT; error = resource_int_value(device_get_name(sc->jme_dev), device_get_unit(sc->jme_dev), "rx_coal_pkt", &sc->jme_rx_coal_to); if (error == 0) { if (sc->jme_rx_coal_pkt < PCCRX_COAL_PKT_MIN || sc->jme_rx_coal_pkt > PCCRX_COAL_PKT_MAX) { device_printf(sc->jme_dev, "tx_coal_pkt value out of range; " "using default: %d\n", PCCRX_COAL_PKT_DEFAULT); sc->jme_rx_coal_pkt = PCCRX_COAL_PKT_DEFAULT; } } if ((sc->jme_flags & JME_FLAG_HWMIB) == 0) return; tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD, NULL, "JME statistics"); parent = SYSCTL_CHILDREN(tree); /* Rx statistics. */ tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD, NULL, "Rx MAC statistics"); child = SYSCTL_CHILDREN(tree); JME_SYSCTL_STAT_ADD32(ctx, child, "good_frames", &stats->rx_good_frames, "Good frames"); JME_SYSCTL_STAT_ADD32(ctx, child, "crc_errs", &stats->rx_crc_errs, "CRC errors"); JME_SYSCTL_STAT_ADD32(ctx, child, "mii_errs", &stats->rx_mii_errs, "MII errors"); JME_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows", &stats->rx_fifo_oflows, "FIFO overflows"); JME_SYSCTL_STAT_ADD32(ctx, child, "desc_empty", &stats->rx_desc_empty, "Descriptor empty"); JME_SYSCTL_STAT_ADD32(ctx, child, "bad_frames", &stats->rx_bad_frames, "Bad frames"); /* Tx statistics. */ tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD, NULL, "Tx MAC statistics"); child = SYSCTL_CHILDREN(tree); JME_SYSCTL_STAT_ADD32(ctx, child, "good_frames", &stats->tx_good_frames, "Good frames"); JME_SYSCTL_STAT_ADD32(ctx, child, "bad_frames", &stats->tx_bad_frames, "Bad frames"); } #undef JME_SYSCTL_STAT_ADD32 struct jme_dmamap_arg { bus_addr_t jme_busaddr; }; static void jme_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error) { struct jme_dmamap_arg *ctx; if (error != 0) return; KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); ctx = (struct jme_dmamap_arg *)arg; ctx->jme_busaddr = segs[0].ds_addr; } static int jme_dma_alloc(struct jme_softc *sc) { struct jme_dmamap_arg ctx; struct jme_txdesc *txd; struct jme_rxdesc *rxd; bus_addr_t lowaddr, rx_ring_end, tx_ring_end; int error, i; lowaddr = BUS_SPACE_MAXADDR; if ((sc->jme_flags & JME_FLAG_DMA32BIT) != 0) lowaddr = BUS_SPACE_MAXADDR_32BIT; again: /* Create parent ring tag. */ error = bus_dma_tag_create(bus_get_dma_tag(sc->jme_dev),/* parent */ 1, 0, /* algnmnt, boundary */ lowaddr, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 0, /* nsegments */ BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lockfunc, lockarg */ &sc->jme_cdata.jme_ring_tag); if (error != 0) { device_printf(sc->jme_dev, "could not create parent ring DMA tag.\n"); goto fail; } /* Create tag for Tx ring. */ error = bus_dma_tag_create(sc->jme_cdata.jme_ring_tag,/* parent */ JME_TX_RING_ALIGN, 0, /* algnmnt, boundary */ BUS_SPACE_MAXADDR, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ JME_TX_RING_SIZE, /* maxsize */ 1, /* nsegments */ JME_TX_RING_SIZE, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lockfunc, lockarg */ &sc->jme_cdata.jme_tx_ring_tag); if (error != 0) { device_printf(sc->jme_dev, "could not allocate Tx ring DMA tag.\n"); goto fail; } /* Create tag for Rx ring. */ error = bus_dma_tag_create(sc->jme_cdata.jme_ring_tag,/* parent */ JME_RX_RING_ALIGN, 0, /* algnmnt, boundary */ lowaddr, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ JME_RX_RING_SIZE, /* maxsize */ 1, /* nsegments */ JME_RX_RING_SIZE, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lockfunc, lockarg */ &sc->jme_cdata.jme_rx_ring_tag); if (error != 0) { device_printf(sc->jme_dev, "could not allocate Rx ring DMA tag.\n"); goto fail; } /* Allocate DMA'able memory and load the DMA map for Tx ring. */ error = bus_dmamem_alloc(sc->jme_cdata.jme_tx_ring_tag, (void **)&sc->jme_rdata.jme_tx_ring, BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->jme_cdata.jme_tx_ring_map); if (error != 0) { device_printf(sc->jme_dev, "could not allocate DMA'able memory for Tx ring.\n"); goto fail; } ctx.jme_busaddr = 0; error = bus_dmamap_load(sc->jme_cdata.jme_tx_ring_tag, sc->jme_cdata.jme_tx_ring_map, sc->jme_rdata.jme_tx_ring, JME_TX_RING_SIZE, jme_dmamap_cb, &ctx, BUS_DMA_NOWAIT); if (error != 0 || ctx.jme_busaddr == 0) { device_printf(sc->jme_dev, "could not load DMA'able memory for Tx ring.\n"); goto fail; } sc->jme_rdata.jme_tx_ring_paddr = ctx.jme_busaddr; /* Allocate DMA'able memory and load the DMA map for Rx ring. */ error = bus_dmamem_alloc(sc->jme_cdata.jme_rx_ring_tag, (void **)&sc->jme_rdata.jme_rx_ring, BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->jme_cdata.jme_rx_ring_map); if (error != 0) { device_printf(sc->jme_dev, "could not allocate DMA'able memory for Rx ring.\n"); goto fail; } ctx.jme_busaddr = 0; error = bus_dmamap_load(sc->jme_cdata.jme_rx_ring_tag, sc->jme_cdata.jme_rx_ring_map, sc->jme_rdata.jme_rx_ring, JME_RX_RING_SIZE, jme_dmamap_cb, &ctx, BUS_DMA_NOWAIT); if (error != 0 || ctx.jme_busaddr == 0) { device_printf(sc->jme_dev, "could not load DMA'able memory for Rx ring.\n"); goto fail; } sc->jme_rdata.jme_rx_ring_paddr = ctx.jme_busaddr; if (lowaddr != BUS_SPACE_MAXADDR_32BIT) { /* 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))) { device_printf(sc->jme_dev, "4GB boundary crossed, " "switching to 32bit DMA address mode.\n"); jme_dma_free(sc); /* Limit DMA address space to 32bit and try again. */ lowaddr = BUS_SPACE_MAXADDR_32BIT; goto again; } } lowaddr = BUS_SPACE_MAXADDR; if ((sc->jme_flags & JME_FLAG_DMA32BIT) != 0) lowaddr = BUS_SPACE_MAXADDR_32BIT; /* Create parent buffer tag. */ error = bus_dma_tag_create(bus_get_dma_tag(sc->jme_dev),/* parent */ 1, 0, /* algnmnt, boundary */ lowaddr, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ BUS_SPACE_MAXSIZE_32BIT, /* maxsize */ 0, /* nsegments */ BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lockfunc, lockarg */ &sc->jme_cdata.jme_buffer_tag); if (error != 0) { device_printf(sc->jme_dev, "could not create parent buffer DMA tag.\n"); goto fail; } /* Create shadow status block tag. */ error = bus_dma_tag_create(sc->jme_cdata.jme_buffer_tag,/* parent */ JME_SSB_ALIGN, 0, /* algnmnt, boundary */ BUS_SPACE_MAXADDR, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ JME_SSB_SIZE, /* maxsize */ 1, /* nsegments */ JME_SSB_SIZE, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lockfunc, lockarg */ &sc->jme_cdata.jme_ssb_tag); if (error != 0) { device_printf(sc->jme_dev, "could not create shared status block DMA tag.\n"); goto fail; } /* Create tag for Tx buffers. */ error = bus_dma_tag_create(sc->jme_cdata.jme_buffer_tag,/* parent */ 1, 0, /* algnmnt, boundary */ BUS_SPACE_MAXADDR, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ JME_TSO_MAXSIZE, /* maxsize */ JME_MAXTXSEGS, /* nsegments */ JME_TSO_MAXSEGSIZE, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lockfunc, lockarg */ &sc->jme_cdata.jme_tx_tag); if (error != 0) { device_printf(sc->jme_dev, "could not create Tx DMA tag.\n"); goto fail; } /* Create tag for Rx buffers. */ error = bus_dma_tag_create(sc->jme_cdata.jme_buffer_tag,/* parent */ JME_RX_BUF_ALIGN, 0, /* algnmnt, boundary */ BUS_SPACE_MAXADDR, /* lowaddr */ BUS_SPACE_MAXADDR, /* highaddr */ NULL, NULL, /* filter, filterarg */ MCLBYTES, /* maxsize */ 1, /* nsegments */ MCLBYTES, /* maxsegsize */ 0, /* flags */ NULL, NULL, /* lockfunc, lockarg */ &sc->jme_cdata.jme_rx_tag); if (error != 0) { device_printf(sc->jme_dev, "could not create Rx DMA tag.\n"); goto fail; } /* * Allocate DMA'able memory and load the DMA map for shared * status block. */ error = bus_dmamem_alloc(sc->jme_cdata.jme_ssb_tag, (void **)&sc->jme_rdata.jme_ssb_block, BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT, &sc->jme_cdata.jme_ssb_map); if (error != 0) { device_printf(sc->jme_dev, "could not allocate DMA'able " "memory for shared status block.\n"); goto fail; } ctx.jme_busaddr = 0; error = bus_dmamap_load(sc->jme_cdata.jme_ssb_tag, sc->jme_cdata.jme_ssb_map, sc->jme_rdata.jme_ssb_block, JME_SSB_SIZE, jme_dmamap_cb, &ctx, BUS_DMA_NOWAIT); if (error != 0 || ctx.jme_busaddr == 0) { device_printf(sc->jme_dev, "could not load DMA'able memory " "for shared status block.\n"); goto fail; } sc->jme_rdata.jme_ssb_block_paddr = ctx.jme_busaddr; /* Create DMA maps for Tx buffers. */ for (i = 0; i < JME_TX_RING_CNT; i++) { txd = &sc->jme_cdata.jme_txdesc[i]; txd->tx_m = NULL; txd->tx_dmamap = NULL; error = bus_dmamap_create(sc->jme_cdata.jme_tx_tag, 0, &txd->tx_dmamap); if (error != 0) { device_printf(sc->jme_dev, "could not create Tx dmamap.\n"); goto fail; } } /* Create DMA maps for Rx buffers. */ if ((error = bus_dmamap_create(sc->jme_cdata.jme_rx_tag, 0, &sc->jme_cdata.jme_rx_sparemap)) != 0) { device_printf(sc->jme_dev, "could not create spare Rx dmamap.\n"); goto fail; } for (i = 0; i < JME_RX_RING_CNT; i++) { rxd = &sc->jme_cdata.jme_rxdesc[i]; rxd->rx_m = NULL; rxd->rx_dmamap = NULL; error = bus_dmamap_create(sc->jme_cdata.jme_rx_tag, 0, &rxd->rx_dmamap); if (error != 0) { device_printf(sc->jme_dev, "could not create Rx dmamap.\n"); goto fail; } } fail: return (error); } static void jme_dma_free(struct jme_softc *sc) { struct jme_txdesc *txd; struct jme_rxdesc *rxd; int i; /* Tx ring */ if (sc->jme_cdata.jme_tx_ring_tag != NULL) { if (sc->jme_cdata.jme_tx_ring_map) bus_dmamap_unload(sc->jme_cdata.jme_tx_ring_tag, sc->jme_cdata.jme_tx_ring_map); if (sc->jme_cdata.jme_tx_ring_map && sc->jme_rdata.jme_tx_ring) bus_dmamem_free(sc->jme_cdata.jme_tx_ring_tag, sc->jme_rdata.jme_tx_ring, sc->jme_cdata.jme_tx_ring_map); sc->jme_rdata.jme_tx_ring = NULL; sc->jme_cdata.jme_tx_ring_map = NULL; bus_dma_tag_destroy(sc->jme_cdata.jme_tx_ring_tag); sc->jme_cdata.jme_tx_ring_tag = NULL; } /* Rx ring */ if (sc->jme_cdata.jme_rx_ring_tag != NULL) { if (sc->jme_cdata.jme_rx_ring_map) bus_dmamap_unload(sc->jme_cdata.jme_rx_ring_tag, sc->jme_cdata.jme_rx_ring_map); if (sc->jme_cdata.jme_rx_ring_map && sc->jme_rdata.jme_rx_ring) bus_dmamem_free(sc->jme_cdata.jme_rx_ring_tag, sc->jme_rdata.jme_rx_ring, sc->jme_cdata.jme_rx_ring_map); sc->jme_rdata.jme_rx_ring = NULL; sc->jme_cdata.jme_rx_ring_map = NULL; bus_dma_tag_destroy(sc->jme_cdata.jme_rx_ring_tag); sc->jme_cdata.jme_rx_ring_tag = NULL; } /* Tx buffers */ if (sc->jme_cdata.jme_tx_tag != NULL) { for (i = 0; i < JME_TX_RING_CNT; i++) { txd = &sc->jme_cdata.jme_txdesc[i]; if (txd->tx_dmamap != NULL) { bus_dmamap_destroy(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap); txd->tx_dmamap = NULL; } } bus_dma_tag_destroy(sc->jme_cdata.jme_tx_tag); sc->jme_cdata.jme_tx_tag = NULL; } /* Rx buffers */ if (sc->jme_cdata.jme_rx_tag != NULL) { for (i = 0; i < JME_RX_RING_CNT; i++) { rxd = &sc->jme_cdata.jme_rxdesc[i]; if (rxd->rx_dmamap != NULL) { bus_dmamap_destroy(sc->jme_cdata.jme_rx_tag, rxd->rx_dmamap); rxd->rx_dmamap = NULL; } } if (sc->jme_cdata.jme_rx_sparemap != NULL) { bus_dmamap_destroy(sc->jme_cdata.jme_rx_tag, sc->jme_cdata.jme_rx_sparemap); sc->jme_cdata.jme_rx_sparemap = NULL; } bus_dma_tag_destroy(sc->jme_cdata.jme_rx_tag); sc->jme_cdata.jme_rx_tag = NULL; } /* Shared status block. */ if (sc->jme_cdata.jme_ssb_tag != NULL) { if (sc->jme_cdata.jme_ssb_map) bus_dmamap_unload(sc->jme_cdata.jme_ssb_tag, sc->jme_cdata.jme_ssb_map); if (sc->jme_cdata.jme_ssb_map && sc->jme_rdata.jme_ssb_block) bus_dmamem_free(sc->jme_cdata.jme_ssb_tag, sc->jme_rdata.jme_ssb_block, sc->jme_cdata.jme_ssb_map); sc->jme_rdata.jme_ssb_block = NULL; sc->jme_cdata.jme_ssb_map = NULL; bus_dma_tag_destroy(sc->jme_cdata.jme_ssb_tag); sc->jme_cdata.jme_ssb_tag = NULL; } if (sc->jme_cdata.jme_buffer_tag != NULL) { bus_dma_tag_destroy(sc->jme_cdata.jme_buffer_tag); sc->jme_cdata.jme_buffer_tag = NULL; } if (sc->jme_cdata.jme_ring_tag != NULL) { bus_dma_tag_destroy(sc->jme_cdata.jme_ring_tag); sc->jme_cdata.jme_ring_tag = NULL; } } /* * Make sure the interface is stopped at reboot time. */ static int jme_shutdown(device_t dev) { return (jme_suspend(dev)); } /* * 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. */ static void jme_setlinkspeed(struct jme_softc *sc) { struct mii_data *mii; int aneg, i; JME_LOCK_ASSERT(sc); mii = device_get_softc(sc->jme_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->jme_dev, sc->jme_phyaddr, MII_100T2CR, 0); jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA); jme_miibus_writereg(sc->jme_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) device_printf(sc->jme_dev, "establishing link failed, " "WOL may not work!"); } /* * 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); } static void jme_setwol(struct jme_softc *sc) { struct ifnet *ifp; uint32_t gpr, pmcs; uint16_t pmstat; int pmc; JME_LOCK_ASSERT(sc); if (pci_find_cap(sc->jme_dev, PCIY_PMG, &pmc) != 0) { /* Remove Tx MAC/offload clock to save more power. */ if ((sc->jme_flags & JME_FLAG_TXCLK) != 0) CSR_WRITE_4(sc, JME_GHC, CSR_READ_4(sc, JME_GHC) & ~(GHC_TX_OFFLD_CLK_100 | GHC_TX_MAC_CLK_100 | GHC_TX_OFFLD_CLK_1000 | GHC_TX_MAC_CLK_1000)); if ((sc->jme_flags & JME_FLAG_RXCLK) != 0) CSR_WRITE_4(sc, JME_GPREG1, CSR_READ_4(sc, JME_GPREG1) | GPREG1_RX_MAC_CLK_DIS); /* No PME capability, PHY power down. */ jme_phy_down(sc); return; } ifp = sc->jme_ifp; 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_flags & JME_FLAG_FASTETH) == 0) jme_setlinkspeed(sc); } CSR_WRITE_4(sc, JME_PMCS, pmcs); CSR_WRITE_4(sc, JME_GPREG0, gpr); /* Remove Tx MAC/offload clock to save more power. */ if ((sc->jme_flags & JME_FLAG_TXCLK) != 0) CSR_WRITE_4(sc, JME_GHC, CSR_READ_4(sc, JME_GHC) & ~(GHC_TX_OFFLD_CLK_100 | GHC_TX_MAC_CLK_100 | GHC_TX_OFFLD_CLK_1000 | GHC_TX_MAC_CLK_1000)); /* Request PME. */ pmstat = pci_read_config(sc->jme_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->jme_dev, pmc + PCIR_POWER_STATUS, pmstat, 2); if ((ifp->if_capenable & IFCAP_WOL) == 0) { /* No WOL, PHY power down. */ jme_phy_down(sc); } } static int jme_suspend(device_t dev) { struct jme_softc *sc; sc = device_get_softc(dev); JME_LOCK(sc); jme_stop(sc); jme_setwol(sc); JME_UNLOCK(sc); return (0); } static int jme_resume(device_t dev) { struct jme_softc *sc; struct ifnet *ifp; uint16_t pmstat; int pmc; sc = device_get_softc(dev); JME_LOCK(sc); if (pci_find_cap(sc->jme_dev, PCIY_PMG, &pmc) != 0) { pmstat = pci_read_config(sc->jme_dev, pmc + PCIR_POWER_STATUS, 2); /* Disable PME clear PME status. */ pmstat &= ~PCIM_PSTAT_PMEENABLE; pci_write_config(sc->jme_dev, pmc + PCIR_POWER_STATUS, pmstat, 2); } /* Wakeup PHY. */ jme_phy_up(sc); ifp = sc->jme_ifp; if ((ifp->if_flags & IFF_UP) != 0) { ifp->if_drv_flags &= ~IFF_DRV_RUNNING; jme_init_locked(sc); } JME_UNLOCK(sc); return (0); } static int jme_encap(struct jme_softc *sc, struct mbuf **m_head) { struct jme_txdesc *txd; struct jme_desc *desc; struct mbuf *m; bus_dma_segment_t txsegs[JME_MAXTXSEGS]; int error, i, nsegs, prod; uint32_t cflags, tso_segsz; JME_LOCK_ASSERT(sc); M_ASSERTPKTHDR((*m_head)); if (((*m_head)->m_pkthdr.csum_flags & CSUM_TSO) != 0) { /* * Due to the adherence to NDIS specification JMC250 * assumes upper stack computed TCP pseudo checksum * without including payload length. This breaks * checksum offload for TSO case so recompute TCP * pseudo checksum for JMC250. Hopefully this wouldn't * be much burden on modern CPUs. */ struct ether_header *eh; struct ip *ip; struct tcphdr *tcp; uint32_t ip_off, poff; if (M_WRITABLE(*m_head) == 0) { /* Get a writable copy. */ m = m_dup(*m_head, M_DONTWAIT); m_freem(*m_head); if (m == NULL) { *m_head = NULL; return (ENOBUFS); } *m_head = m; } ip_off = sizeof(struct ether_header); m = m_pullup(*m_head, ip_off); if (m == NULL) { *m_head = NULL; return (ENOBUFS); } eh = mtod(m, struct ether_header *); /* Check the existence of VLAN tag. */ if (eh->ether_type == htons(ETHERTYPE_VLAN)) { ip_off = sizeof(struct ether_vlan_header); m = m_pullup(m, ip_off); if (m == NULL) { *m_head = NULL; return (ENOBUFS); } } m = m_pullup(m, ip_off + sizeof(struct ip)); if (m == NULL) { *m_head = NULL; return (ENOBUFS); } ip = (struct ip *)(mtod(m, char *) + ip_off); poff = ip_off + (ip->ip_hl << 2); m = m_pullup(m, poff + sizeof(struct tcphdr)); if (m == NULL) { *m_head = NULL; return (ENOBUFS); } /* * Reset IP checksum and recompute TCP pseudo * checksum that NDIS specification requires. */ ip = (struct ip *)(mtod(m, char *) + ip_off); tcp = (struct tcphdr *)(mtod(m, char *) + poff); ip->ip_sum = 0; if (poff + (tcp->th_off << 2) == m->m_pkthdr.len) { tcp->th_sum = in_pseudo(ip->ip_src.s_addr, ip->ip_dst.s_addr, htons((tcp->th_off << 2) + IPPROTO_TCP)); /* No need to TSO, force IP checksum offload. */ (*m_head)->m_pkthdr.csum_flags &= ~CSUM_TSO; (*m_head)->m_pkthdr.csum_flags |= CSUM_IP; } else tcp->th_sum = in_pseudo(ip->ip_src.s_addr, ip->ip_dst.s_addr, htons(IPPROTO_TCP)); *m_head = m; } prod = sc->jme_cdata.jme_tx_prod; txd = &sc->jme_cdata.jme_txdesc[prod]; error = bus_dmamap_load_mbuf_sg(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap, *m_head, txsegs, &nsegs, 0); if (error == EFBIG) { m = m_collapse(*m_head, M_DONTWAIT, JME_MAXTXSEGS); if (m == NULL) { m_freem(*m_head); *m_head = NULL; return (ENOMEM); } *m_head = m; error = bus_dmamap_load_mbuf_sg(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap, *m_head, txsegs, &nsegs, 0); if (error != 0) { m_freem(*m_head); *m_head = NULL; return (error); } } else if (error != 0) return (error); if (nsegs == 0) { m_freem(*m_head); *m_head = NULL; return (EIO); } /* * Check descriptor overrun. Leave one free descriptor. * Since we always use 64bit address mode for transmitting, * each Tx request requires one more dummy descriptor. */ if (sc->jme_cdata.jme_tx_cnt + nsegs + 1 > JME_TX_RING_CNT - 1) { bus_dmamap_unload(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap); return (ENOBUFS); } m = *m_head; cflags = 0; tso_segsz = 0; /* Configure checksum offload and TSO. */ if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) { tso_segsz = (uint32_t)m->m_pkthdr.tso_segsz << JME_TD_MSS_SHIFT; cflags |= JME_TD_TSO; } else { if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0) cflags |= JME_TD_IPCSUM; if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0) cflags |= JME_TD_TCPCSUM; if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0) cflags |= JME_TD_UDPCSUM; } /* Configure VLAN. */ if ((m->m_flags & M_VLANTAG) != 0) { cflags |= (m->m_pkthdr.ether_vtag & JME_TD_VLAN_MASK); cflags |= JME_TD_VLAN_TAG; } desc = &sc->jme_rdata.jme_tx_ring[prod]; desc->flags = htole32(cflags); desc->buflen = htole32(tso_segsz); desc->addr_hi = htole32(m->m_pkthdr.len); desc->addr_lo = 0; sc->jme_cdata.jme_tx_cnt++; JME_DESC_INC(prod, JME_TX_RING_CNT); for (i = 0; i < nsegs; i++) { desc = &sc->jme_rdata.jme_tx_ring[prod]; desc->flags = htole32(JME_TD_OWN | JME_TD_64BIT); desc->buflen = htole32(txsegs[i].ds_len); desc->addr_hi = htole32(JME_ADDR_HI(txsegs[i].ds_addr)); desc->addr_lo = htole32(JME_ADDR_LO(txsegs[i].ds_addr)); sc->jme_cdata.jme_tx_cnt++; 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 = nsegs + 1; /* Sync descriptors. */ bus_dmamap_sync(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap, BUS_DMASYNC_PREWRITE); bus_dmamap_sync(sc->jme_cdata.jme_tx_ring_tag, sc->jme_cdata.jme_tx_ring_map, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); return (0); } static void jme_start(struct ifnet *ifp) { struct jme_softc *sc; sc = ifp->if_softc; JME_LOCK(sc); jme_start_locked(ifp); JME_UNLOCK(sc); } static void jme_start_locked(struct ifnet *ifp) { struct jme_softc *sc; struct mbuf *m_head; int enq; sc = ifp->if_softc; JME_LOCK_ASSERT(sc); if (sc->jme_cdata.jme_tx_cnt >= JME_TX_DESC_HIWAT) jme_txeof(sc); if ((ifp->if_drv_flags & (IFF_DRV_RUNNING | IFF_DRV_OACTIVE)) != IFF_DRV_RUNNING || (sc->jme_flags & JME_FLAG_LINK) == 0) return; for (enq = 0; !IFQ_DRV_IS_EMPTY(&ifp->if_snd); ) { IFQ_DRV_DEQUEUE(&ifp->if_snd, m_head); if (m_head == NULL) break; /* * 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) break; IFQ_DRV_PREPEND(&ifp->if_snd, m_head); ifp->if_drv_flags |= IFF_DRV_OACTIVE; break; } enq++; /* * If there's a BPF listener, bounce a copy of this frame * to him. */ ETHER_BPF_MTAP(ifp, m_head); } 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. */ sc->jme_watchdog_timer = JME_TX_TIMEOUT; } } static void jme_watchdog(struct jme_softc *sc) { struct ifnet *ifp; JME_LOCK_ASSERT(sc); if (sc->jme_watchdog_timer == 0 || --sc->jme_watchdog_timer) return; ifp = sc->jme_ifp; if ((sc->jme_flags & JME_FLAG_LINK) == 0) { if_printf(sc->jme_ifp, "watchdog timeout (missed link)\n"); ifp->if_oerrors++; ifp->if_drv_flags &= ~IFF_DRV_RUNNING; jme_init_locked(sc); return; } jme_txeof(sc); if (sc->jme_cdata.jme_tx_cnt == 0) { if_printf(sc->jme_ifp, "watchdog timeout (missed Tx interrupts) -- recovering\n"); if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) jme_start_locked(ifp); return; } if_printf(sc->jme_ifp, "watchdog timeout\n"); ifp->if_oerrors++; ifp->if_drv_flags &= ~IFF_DRV_RUNNING; jme_init_locked(sc); if (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) jme_start_locked(ifp); } static int jme_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data) { struct jme_softc *sc; struct ifreq *ifr; struct mii_data *mii; uint32_t reg; int error, mask; sc = ifp->if_softc; ifr = (struct ifreq *)data; error = 0; switch (cmd) { case SIOCSIFMTU: if (ifr->ifr_mtu < ETHERMIN || ifr->ifr_mtu > JME_JUMBO_MTU || ((sc->jme_flags & JME_FLAG_NOJUMBO) != 0 && ifr->ifr_mtu > JME_MAX_MTU)) { error = EINVAL; break; } if (ifp->if_mtu != ifr->ifr_mtu) { /* * No special configuration is required when interface * MTU is changed but availability of TSO/Tx checksum * offload should be chcked against new MTU size as * FIFO size is just 2K. */ JME_LOCK(sc); if (ifr->ifr_mtu >= JME_TX_FIFO_SIZE) { ifp->if_capenable &= ~(IFCAP_TXCSUM | IFCAP_TSO4); ifp->if_hwassist &= ~(JME_CSUM_FEATURES | CSUM_TSO); VLAN_CAPABILITIES(ifp); } ifp->if_mtu = ifr->ifr_mtu; if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { ifp->if_drv_flags &= ~IFF_DRV_RUNNING; jme_init_locked(sc); } JME_UNLOCK(sc); } break; case SIOCSIFFLAGS: JME_LOCK(sc); if ((ifp->if_flags & IFF_UP) != 0) { if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { if (((ifp->if_flags ^ sc->jme_if_flags) & (IFF_PROMISC | IFF_ALLMULTI)) != 0) jme_set_filter(sc); } else { if ((sc->jme_flags & JME_FLAG_DETACH) == 0) jme_init_locked(sc); } } else { if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) jme_stop(sc); } sc->jme_if_flags = ifp->if_flags; JME_UNLOCK(sc); break; case SIOCADDMULTI: case SIOCDELMULTI: JME_LOCK(sc); if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) jme_set_filter(sc); JME_UNLOCK(sc); break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: mii = device_get_softc(sc->jme_miibus); error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd); break; case SIOCSIFCAP: JME_LOCK(sc); mask = ifr->ifr_reqcap ^ ifp->if_capenable; if ((mask & IFCAP_TXCSUM) != 0 && ifp->if_mtu < JME_TX_FIFO_SIZE) { if ((IFCAP_TXCSUM & ifp->if_capabilities) != 0) { ifp->if_capenable ^= IFCAP_TXCSUM; if ((IFCAP_TXCSUM & ifp->if_capenable) != 0) ifp->if_hwassist |= JME_CSUM_FEATURES; else ifp->if_hwassist &= ~JME_CSUM_FEATURES; } } if ((mask & IFCAP_RXCSUM) != 0 && (IFCAP_RXCSUM & ifp->if_capabilities) != 0) { ifp->if_capenable ^= IFCAP_RXCSUM; reg = CSR_READ_4(sc, JME_RXMAC); reg &= ~RXMAC_CSUM_ENB; if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) reg |= RXMAC_CSUM_ENB; CSR_WRITE_4(sc, JME_RXMAC, reg); } if ((mask & IFCAP_TSO4) != 0 && ifp->if_mtu < JME_TX_FIFO_SIZE) { if ((IFCAP_TSO4 & ifp->if_capabilities) != 0) { ifp->if_capenable ^= IFCAP_TSO4; if ((IFCAP_TSO4 & ifp->if_capenable) != 0) ifp->if_hwassist |= CSUM_TSO; else ifp->if_hwassist &= ~CSUM_TSO; } } if ((mask & IFCAP_WOL_MAGIC) != 0 && (IFCAP_WOL_MAGIC & ifp->if_capabilities) != 0) ifp->if_capenable ^= IFCAP_WOL_MAGIC; if ((mask & IFCAP_VLAN_HWCSUM) != 0 && (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0) ifp->if_capenable ^= IFCAP_VLAN_HWCSUM; if ((mask & IFCAP_VLAN_HWTSO) != 0 && (ifp->if_capabilities & IFCAP_VLAN_HWTSO) != 0) ifp->if_capenable ^= IFCAP_VLAN_HWTSO; if ((mask & IFCAP_VLAN_HWTAGGING) != 0 && (IFCAP_VLAN_HWTAGGING & ifp->if_capabilities) != 0) { ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING; jme_set_vlan(sc); } JME_UNLOCK(sc); VLAN_CAPABILITIES(ifp); break; default: error = ether_ioctl(ifp, cmd, data); break; } return (error); } static void jme_mac_config(struct jme_softc *sc) { struct mii_data *mii; uint32_t ghc, gpreg, rxmac, txmac, txpause; uint32_t txclk; JME_LOCK_ASSERT(sc); mii = device_get_softc(sc->jme_miibus); CSR_WRITE_4(sc, JME_GHC, GHC_RESET); DELAY(10); CSR_WRITE_4(sc, JME_GHC, 0); ghc = 0; txclk = 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); 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; /* 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; txclk |= GHC_TX_OFFLD_CLK_100 | GHC_TX_MAC_CLK_100; break; case IFM_100_TX: ghc |= GHC_SPEED_100; txclk |= GHC_TX_OFFLD_CLK_100 | GHC_TX_MAC_CLK_100; break; case IFM_1000_T: if ((sc->jme_flags & JME_FLAG_FASTETH) != 0) break; ghc |= GHC_SPEED_1000; txclk |= GHC_TX_OFFLD_CLK_1000 | GHC_TX_MAC_CLK_1000; if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) == 0) txmac |= TXMAC_CARRIER_EXT | TXMAC_FRAME_BURST; break; default: break; } if (sc->jme_rev == DEVICEID_JMC250 && sc->jme_chip_rev == DEVICEREVID_JMC250_A2) { /* * Workaround occasional packet loss issue of JMC250 A2 * when it runs on half-duplex media. */ gpreg = CSR_READ_4(sc, JME_GPREG1); if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) gpreg &= ~GPREG1_HDPX_FIX; else gpreg |= GPREG1_HDPX_FIX; CSR_WRITE_4(sc, JME_GPREG1, gpreg); /* Workaround CRC errors at 100Mbps on JMC250 A2. */ if (IFM_SUBTYPE(mii->mii_media_active) == IFM_100_TX) { /* Extend interface FIFO depth. */ jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, 0x1B, 0x0000); } else { /* Select default interface FIFO depth. */ jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, 0x1B, 0x0004); } } if ((sc->jme_flags & JME_FLAG_TXCLK) != 0) ghc |= txclk; 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); } static void jme_link_task(void *arg, int pending) { struct jme_softc *sc; struct mii_data *mii; struct ifnet *ifp; struct jme_txdesc *txd; bus_addr_t paddr; int i; sc = (struct jme_softc *)arg; JME_LOCK(sc); mii = device_get_softc(sc->jme_miibus); ifp = sc->jme_ifp; if (mii == NULL || ifp == NULL || (ifp->if_drv_flags & IFF_DRV_RUNNING) == 0) { JME_UNLOCK(sc); return; } 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_flags & JME_FLAG_FASTETH) != 0) 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. */ /* Block execution of task. */ taskqueue_block(sc->jme_tq); /* Disable interrupts and stop driver. */ CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS); ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); callout_stop(&sc->jme_tick_ch); sc->jme_watchdog_timer = 0; /* Stop receiver/transmitter. */ jme_stop_rx(sc); jme_stop_tx(sc); /* XXX Drain all queued tasks. */ JME_UNLOCK(sc); taskqueue_drain(sc->jme_tq, &sc->jme_int_task); JME_LOCK(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_sync( sc->jme_cdata.jme_tx_tag, txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload( sc->jme_cdata.jme_tx_tag, 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 * producer/consumer index. */ sc->jme_cdata.jme_rx_cons = 0; sc->jme_morework = 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) != 0) { jme_mac_config(sc); jme_stats_clear(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); /* Lastly enable TX/RX clock. */ if ((sc->jme_flags & JME_FLAG_TXCLK) != 0) CSR_WRITE_4(sc, JME_GHC, CSR_READ_4(sc, JME_GHC) & ~GHC_TX_MAC_CLK_DIS); if ((sc->jme_flags & JME_FLAG_RXCLK) != 0) CSR_WRITE_4(sc, JME_GPREG1, CSR_READ_4(sc, JME_GPREG1) & ~GPREG1_RX_MAC_CLK_DIS); } ifp->if_drv_flags |= IFF_DRV_RUNNING; ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; callout_reset(&sc->jme_tick_ch, hz, jme_tick, sc); /* Unblock execution of task. */ taskqueue_unblock(sc->jme_tq); /* Reenable interrupts. */ CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS); JME_UNLOCK(sc); } static int jme_intr(void *arg) { struct jme_softc *sc; uint32_t status; sc = (struct jme_softc *)arg; status = CSR_READ_4(sc, JME_INTR_REQ_STATUS); if (status == 0 || status == 0xFFFFFFFF) return (FILTER_STRAY); /* Disable interrupts. */ CSR_WRITE_4(sc, JME_INTR_MASK_CLR, JME_INTRS); taskqueue_enqueue(sc->jme_tq, &sc->jme_int_task); return (FILTER_HANDLED); } static void jme_int_task(void *arg, int pending) { struct jme_softc *sc; struct ifnet *ifp; uint32_t status; int more; sc = (struct jme_softc *)arg; ifp = sc->jme_ifp; JME_LOCK(sc); status = CSR_READ_4(sc, JME_INTR_STATUS); if (sc->jme_morework != 0) { sc->jme_morework = 0; status |= INTR_RXQ_COAL | INTR_RXQ_COAL_TO; } if ((status & JME_INTRS) == 0 || status == 0xFFFFFFFF) goto done; /* Reset PCC counter/timer and Ack interrupts. */ status &= ~(INTR_TXQ_COMP | INTR_RXQ_COMP); if ((status & (INTR_TXQ_COAL | INTR_TXQ_COAL_TO)) != 0) status |= INTR_TXQ_COAL | INTR_TXQ_COAL_TO | INTR_TXQ_COMP; if ((status & (INTR_RXQ_COAL | INTR_RXQ_COAL_TO)) != 0) status |= INTR_RXQ_COAL | INTR_RXQ_COAL_TO | INTR_RXQ_COMP; CSR_WRITE_4(sc, JME_INTR_STATUS, status); more = 0; if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) { if ((status & (INTR_RXQ_COAL | INTR_RXQ_COAL_TO)) != 0) { more = jme_rxintr(sc, sc->jme_process_limit); if (more != 0) sc->jme_morework = 1; } if ((status & INTR_RXQ_DESC_EMPTY) != 0) { /* * 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 (!IFQ_DRV_IS_EMPTY(&ifp->if_snd)) jme_start_locked(ifp); } if (more != 0 || (CSR_READ_4(sc, JME_INTR_STATUS) & JME_INTRS) != 0) { taskqueue_enqueue(sc->jme_tq, &sc->jme_int_task); JME_UNLOCK(sc); return; } done: JME_UNLOCK(sc); /* Reenable interrupts. */ CSR_WRITE_4(sc, JME_INTR_MASK_SET, JME_INTRS); } static void jme_txeof(struct jme_softc *sc) { struct ifnet *ifp; struct jme_txdesc *txd; uint32_t status; int cons, nsegs; JME_LOCK_ASSERT(sc); ifp = sc->jme_ifp; cons = sc->jme_cdata.jme_tx_cons; if (cons == sc->jme_cdata.jme_tx_prod) return; bus_dmamap_sync(sc->jme_cdata.jme_tx_ring_tag, sc->jme_cdata.jme_tx_ring_map, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); /* * Go through our Tx list and free mbufs for those * frames which have been transmitted. */ for (; cons != sc->jme_cdata.jme_tx_prod;) { txd = &sc->jme_cdata.jme_txdesc[cons]; status = le32toh(txd->tx_desc->flags); if ((status & JME_TD_OWN) == JME_TD_OWN) break; if ((status & (JME_TD_TMOUT | JME_TD_RETRY_EXP)) != 0) ifp->if_oerrors++; else { ifp->if_opackets++; if ((status & JME_TD_COLLISION) != 0) ifp->if_collisions += le32toh(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_sync(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap); KASSERT(txd->tx_m != NULL, ("%s: freeing NULL mbuf!\n", __func__)); m_freem(txd->tx_m); txd->tx_m = NULL; sc->jme_cdata.jme_tx_cnt -= txd->tx_ndesc; KASSERT(sc->jme_cdata.jme_tx_cnt >= 0, ("%s: Active Tx desc counter was garbled\n", __func__)); txd->tx_ndesc = 0; ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; } sc->jme_cdata.jme_tx_cons = cons; /* Unarm watchog timer when there is no pending descriptors in queue. */ if (sc->jme_cdata.jme_tx_cnt == 0) sc->jme_watchdog_timer = 0; bus_dmamap_sync(sc->jme_cdata.jme_tx_ring_tag, sc->jme_cdata.jme_tx_ring_map, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } static __inline void jme_discard_rxbuf(struct jme_softc *sc, int cons) { struct jme_desc *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); } /* Receive a frame. */ static void jme_rxeof(struct jme_softc *sc) { struct ifnet *ifp; struct jme_desc *desc; struct jme_rxdesc *rxd; struct mbuf *mp, *m; uint32_t flags, status; int cons, count, nsegs; JME_LOCK_ASSERT(sc); ifp = sc->jme_ifp; cons = sc->jme_cdata.jme_rx_cons; desc = &sc->jme_rdata.jme_rx_ring[cons]; flags = le32toh(desc->flags); status = le32toh(desc->buflen); nsegs = JME_RX_NSEGS(status); sc->jme_cdata.jme_rxlen = JME_RX_BYTES(status) - JME_RX_PAD_BYTES; if ((status & JME_RX_ERR_STAT) != 0) { ifp->if_ierrors++; jme_discard_rxbuf(sc, sc->jme_cdata.jme_rx_cons); #ifdef JME_SHOW_ERRORS device_printf(sc->jme_dev, "%s : receive error = 0x%b\n", __func__, 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; } 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) { ifp->if_iqdrops++; /* Reuse buffer. */ for (; count < nsegs; count++) { jme_discard_rxbuf(sc, cons); JME_DESC_INC(cons, JME_RX_RING_CNT); } 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; 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 ((ifp->if_capenable & IFCAP_RXCSUM) != 0 && (flags & JME_RD_IPV4) != 0) { m->m_pkthdr.csum_flags |= CSUM_IP_CHECKED; if ((flags & JME_RD_IPCSUM) != 0) m->m_pkthdr.csum_flags |= CSUM_IP_VALID; 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 |= CSUM_DATA_VALID | CSUM_PSEUDO_HDR; m->m_pkthdr.csum_data = 0xffff; } } /* Check for VLAN tagged packets. */ if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 && (flags & JME_RD_VLAN_TAG) != 0) { m->m_pkthdr.ether_vtag = flags & JME_RD_VLAN_MASK; m->m_flags |= M_VLANTAG; } ifp->if_ipackets++; /* Pass it on. */ JME_UNLOCK(sc); (*ifp->if_input)(ifp, m); JME_LOCK(sc); /* Reset mbuf chains. */ JME_RXCHAIN_RESET(sc); } } sc->jme_cdata.jme_rx_cons += nsegs; sc->jme_cdata.jme_rx_cons %= JME_RX_RING_CNT; } static int jme_rxintr(struct jme_softc *sc, int count) { struct jme_desc *desc; int nsegs, prog, pktlen; bus_dmamap_sync(sc->jme_cdata.jme_rx_ring_tag, sc->jme_cdata.jme_rx_ring_map, BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE); for (prog = 0; count > 0; prog++) { desc = &sc->jme_rdata.jme_rx_ring[sc->jme_cdata.jme_rx_cons]; if ((le32toh(desc->flags) & JME_RD_OWN) == JME_RD_OWN) break; if ((le32toh(desc->buflen) & JME_RD_VALID) == 0) break; nsegs = JME_RX_NSEGS(le32toh(desc->buflen)); /* * 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. */ pktlen = JME_RX_BYTES(le32toh(desc->buflen)); if (nsegs != ((pktlen + (MCLBYTES - 1)) / MCLBYTES)) break; prog++; /* Received a frame. */ jme_rxeof(sc); count -= nsegs; } if (prog > 0) bus_dmamap_sync(sc->jme_cdata.jme_rx_ring_tag, sc->jme_cdata.jme_rx_ring_map, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); return (count > 0 ? 0 : EAGAIN); } static void jme_tick(void *arg) { struct jme_softc *sc; struct mii_data *mii; sc = (struct jme_softc *)arg; JME_LOCK_ASSERT(sc); mii = device_get_softc(sc->jme_miibus); mii_tick(mii); /* * Reclaim Tx buffers that have been completed. It's not * needed here but it would release allocated mbuf chains * faster and limit the maximum delay to a hz. */ jme_txeof(sc); jme_stats_update(sc); jme_watchdog(sc); callout_reset(&sc->jme_tick_ch, hz, jme_tick, sc); } static void jme_reset(struct jme_softc *sc) { uint32_t ghc, gpreg; /* Stop receiver, transmitter. */ jme_stop_rx(sc); jme_stop_tx(sc); /* Reset controller. */ CSR_WRITE_4(sc, JME_GHC, GHC_RESET); CSR_READ_4(sc, JME_GHC); DELAY(10); /* * Workaround Rx FIFO overruns seen under certain conditions. * Explicitly synchorize TX/RX clock. TX/RX clock should be * enabled only after enabling TX/RX MACs. */ if ((sc->jme_flags & (JME_FLAG_TXCLK | JME_FLAG_RXCLK)) != 0) { /* Disable TX clock. */ CSR_WRITE_4(sc, JME_GHC, GHC_RESET | GHC_TX_MAC_CLK_DIS); /* Disable RX clock. */ gpreg = CSR_READ_4(sc, JME_GPREG1); CSR_WRITE_4(sc, JME_GPREG1, gpreg | GPREG1_RX_MAC_CLK_DIS); gpreg = CSR_READ_4(sc, JME_GPREG1); /* De-assert RESET but still disable TX clock. */ CSR_WRITE_4(sc, JME_GHC, GHC_TX_MAC_CLK_DIS); ghc = CSR_READ_4(sc, JME_GHC); /* Enable TX clock. */ CSR_WRITE_4(sc, JME_GHC, ghc & ~GHC_TX_MAC_CLK_DIS); /* Enable RX clock. */ CSR_WRITE_4(sc, JME_GPREG1, gpreg & ~GPREG1_RX_MAC_CLK_DIS); CSR_READ_4(sc, JME_GPREG1); /* Disable TX/RX clock again. */ CSR_WRITE_4(sc, JME_GHC, GHC_TX_MAC_CLK_DIS); CSR_WRITE_4(sc, JME_GPREG1, gpreg | GPREG1_RX_MAC_CLK_DIS); } else CSR_WRITE_4(sc, JME_GHC, 0); CSR_READ_4(sc, JME_GHC); DELAY(10); } static void jme_init(void *xsc) { struct jme_softc *sc; sc = (struct jme_softc *)xsc; JME_LOCK(sc); jme_init_locked(sc); JME_UNLOCK(sc); } static void jme_init_locked(struct jme_softc *sc) { struct ifnet *ifp; struct mii_data *mii; bus_addr_t paddr; uint32_t reg; int error; JME_LOCK_ASSERT(sc); ifp = sc->jme_ifp; mii = device_get_softc(sc->jme_miibus); if ((ifp->if_drv_flags & IFF_DRV_RUNNING) != 0) return; /* * Cancel any pending I/O. */ jme_stop(sc); /* * Reset the chip to a known state. */ jme_reset(sc); /* Init descriptors. */ error = jme_init_rx_ring(sc); if (error != 0) { device_printf(sc->jme_dev, "%s: initialization failed: no memory for Rx buffers.\n", __func__); jme_stop(sc); return; } jme_init_tx_ring(sc); /* Initialize shadow status block. */ jme_init_ssb(sc); /* Reprogram the station address. */ jme_set_macaddr(sc, IF_LLADDR(sc->jme_ifp)); /* * 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. Note these do * not hold on chip full mask verion >=2. For these * controllers 64QW and 128QW are not valid value. */ if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 2) sc->jme_rxcsr |= RXCSR_FIFO_THRESH_16QW; else { if ((ifp->if_mtu + ETHER_HDR_LEN + ETHER_VLAN_ENCAP_LEN + ETHER_CRC_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; 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); reg = CSR_READ_4(sc, JME_RXMAC); /* * 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 |= RXMAC_PAD_10BYTES; if ((ifp->if_capenable & IFCAP_RXCSUM) != 0) 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_int_task. 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. */ reg = (sc->jme_tx_coal_to << PCCTX_COAL_TO_SHIFT) & PCCTX_COAL_TO_MASK; 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. */ reg = (sc->jme_rx_coal_to << PCCRX_COAL_TO_SHIFT) & PCCRX_COAL_TO_MASK; reg |= (sc->jme_rx_coal_pkt << PCCRX_COAL_PKT_SHIFT) & PCCRX_COAL_PKT_MASK; CSR_WRITE_4(sc, JME_PCCRX0, reg); /* * Configure PCD(Packet Completion Deferring). It seems PCD * generates an interrupt when the time interval between two * back-to-back incoming/outgoing packet is long enough for * it to reach its timer value 0. The arrival of new packets * after timer has started causes the PCD timer to restart. * Unfortunately, it's not clear how PCD is useful at this * moment, so just use the same of PCC parameters. */ if ((sc->jme_flags & JME_FLAG_PCCPCD) != 0) { sc->jme_rx_pcd_to = sc->jme_rx_coal_to; if (sc->jme_rx_coal_to > PCDRX_TO_MAX) sc->jme_rx_pcd_to = PCDRX_TO_MAX; sc->jme_tx_pcd_to = sc->jme_tx_coal_to; if (sc->jme_tx_coal_to > PCDTX_TO_MAX) sc->jme_tx_pcd_to = PCDTX_TO_MAX; reg = sc->jme_rx_pcd_to << PCDRX0_TO_THROTTLE_SHIFT; reg |= sc->jme_rx_pcd_to << PCDRX0_TO_SHIFT; CSR_WRITE_4(sc, PCDRX_REG(0), reg); reg = sc->jme_tx_pcd_to << PCDTX_TO_THROTTLE_SHIFT; reg |= sc->jme_tx_pcd_to << PCDTX_TO_SHIFT; CSR_WRITE_4(sc, JME_PCDTX, 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_link_task. */ sc->jme_flags &= ~JME_FLAG_LINK; /* Set the current media. */ mii_mediachg(mii); callout_reset(&sc->jme_tick_ch, hz, jme_tick, sc); ifp->if_drv_flags |= IFF_DRV_RUNNING; ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; } static void jme_stop(struct jme_softc *sc) { struct ifnet *ifp; struct jme_txdesc *txd; struct jme_rxdesc *rxd; int i; JME_LOCK_ASSERT(sc); /* * Mark the interface down and cancel the watchdog timer. */ ifp = sc->jme_ifp; ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); sc->jme_flags &= ~JME_FLAG_LINK; callout_stop(&sc->jme_tick_ch); sc->jme_watchdog_timer = 0; /* * 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); /* Reclaim Rx/Tx buffers that have been completed. */ jme_rxintr(sc, JME_RX_RING_CNT); if (sc->jme_cdata.jme_rxhead != NULL) m_freem(sc->jme_cdata.jme_rxhead); JME_RXCHAIN_RESET(sc); jme_txeof(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_sync(sc->jme_cdata.jme_rx_tag, rxd->rx_dmamap, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->jme_cdata.jme_rx_tag, 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_sync(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap, BUS_DMASYNC_POSTWRITE); bus_dmamap_unload(sc->jme_cdata.jme_tx_tag, txd->tx_dmamap); m_freem(txd->tx_m); txd->tx_m = NULL; txd->tx_ndesc = 0; } } jme_stats_update(sc); jme_stats_save(sc); } static 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) device_printf(sc->jme_dev, "stopping transmitter timeout!\n"); } static 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) device_printf(sc->jme_dev, "stopping recevier timeout!\n"); } static 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->jme_cdata.jme_tx_ring_tag, sc->jme_cdata.jme_tx_ring_map, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } static 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->jme_cdata.jme_ssb_tag, sc->jme_cdata.jme_ssb_map, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); } static int jme_init_rx_ring(struct jme_softc *sc) { struct jme_ring_data *rd; struct jme_rxdesc *rxd; int i; sc->jme_cdata.jme_rx_cons = 0; JME_RXCHAIN_RESET(sc); sc->jme_morework = 0; rd = &sc->jme_rdata; bzero(rd->jme_rx_ring, JME_RX_RING_SIZE); for (i = 0; i < JME_RX_RING_CNT; i++) { rxd = &sc->jme_cdata.jme_rxdesc[i]; rxd->rx_m = NULL; rxd->rx_desc = &rd->jme_rx_ring[i]; if (jme_newbuf(sc, rxd) != 0) return (ENOBUFS); } bus_dmamap_sync(sc->jme_cdata.jme_rx_ring_tag, sc->jme_cdata.jme_rx_ring_map, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); return (0); } static int jme_newbuf(struct jme_softc *sc, struct jme_rxdesc *rxd) { struct jme_desc *desc; struct mbuf *m; bus_dma_segment_t segs[1]; bus_dmamap_t map; int nsegs; m = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); if (m == NULL) 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; if (bus_dmamap_load_mbuf_sg(sc->jme_cdata.jme_rx_tag, sc->jme_cdata.jme_rx_sparemap, m, segs, &nsegs, 0) != 0) { m_freem(m); return (ENOBUFS); } KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs)); if (rxd->rx_m != NULL) { bus_dmamap_sync(sc->jme_cdata.jme_rx_tag, rxd->rx_dmamap, BUS_DMASYNC_POSTREAD); bus_dmamap_unload(sc->jme_cdata.jme_rx_tag, rxd->rx_dmamap); } map = rxd->rx_dmamap; rxd->rx_dmamap = sc->jme_cdata.jme_rx_sparemap; sc->jme_cdata.jme_rx_sparemap = map; bus_dmamap_sync(sc->jme_cdata.jme_rx_tag, rxd->rx_dmamap, BUS_DMASYNC_PREREAD); rxd->rx_m = m; desc = rxd->rx_desc; desc->buflen = htole32(segs[0].ds_len); desc->addr_lo = htole32(JME_ADDR_LO(segs[0].ds_addr)); desc->addr_hi = htole32(JME_ADDR_HI(segs[0].ds_addr)); desc->flags = htole32(JME_RD_OWN | JME_RD_INTR | JME_RD_64BIT); return (0); } static void jme_set_vlan(struct jme_softc *sc) { struct ifnet *ifp; uint32_t reg; JME_LOCK_ASSERT(sc); ifp = sc->jme_ifp; reg = CSR_READ_4(sc, JME_RXMAC); reg &= ~RXMAC_VLAN_ENB; if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0) reg |= RXMAC_VLAN_ENB; CSR_WRITE_4(sc, JME_RXMAC, reg); } static void jme_set_filter(struct jme_softc *sc) { struct ifnet *ifp; struct ifmultiaddr *ifma; uint32_t crc; uint32_t mchash[2]; uint32_t rxcfg; JME_LOCK_ASSERT(sc); ifp = sc->jme_ifp; rxcfg = CSR_READ_4(sc, JME_RXMAC); rxcfg &= ~ (RXMAC_BROADCAST | RXMAC_PROMISC | RXMAC_MULTICAST | RXMAC_ALLMULTI); /* Always accept frames destined to our station address. */ rxcfg |= RXMAC_UNICAST; if ((ifp->if_flags & IFF_BROADCAST) != 0) rxcfg |= RXMAC_BROADCAST; if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) { if ((ifp->if_flags & IFF_PROMISC) != 0) rxcfg |= RXMAC_PROMISC; if ((ifp->if_flags & IFF_ALLMULTI) != 0) 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)); if_maddr_rlock(ifp); TAILQ_FOREACH(ifma, &sc->jme_ifp->if_multiaddrs, ifma_link) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; crc = ether_crc32_be(LLADDR((struct sockaddr_dl *) ifma->ifma_addr), 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); } if_maddr_runlock(ifp); CSR_WRITE_4(sc, JME_MAR0, mchash[0]); CSR_WRITE_4(sc, JME_MAR1, mchash[1]); CSR_WRITE_4(sc, JME_RXMAC, rxcfg); } static void jme_stats_clear(struct jme_softc *sc) { JME_LOCK_ASSERT(sc); if ((sc->jme_flags & JME_FLAG_HWMIB) == 0) return; /* Disable and clear counters. */ CSR_WRITE_4(sc, JME_STATCSR, 0xFFFFFFFF); /* Activate hw counters. */ CSR_WRITE_4(sc, JME_STATCSR, 0); CSR_READ_4(sc, JME_STATCSR); bzero(&sc->jme_stats, sizeof(struct jme_hw_stats)); } static void jme_stats_save(struct jme_softc *sc) { JME_LOCK_ASSERT(sc); if ((sc->jme_flags & JME_FLAG_HWMIB) == 0) return; /* Save current counters. */ bcopy(&sc->jme_stats, &sc->jme_ostats, sizeof(struct jme_hw_stats)); /* Disable and clear counters. */ CSR_WRITE_4(sc, JME_STATCSR, 0xFFFFFFFF); } static void jme_stats_update(struct jme_softc *sc) { struct jme_hw_stats *stat, *ostat; uint32_t reg; JME_LOCK_ASSERT(sc); if ((sc->jme_flags & JME_FLAG_HWMIB) == 0) return; stat = &sc->jme_stats; ostat = &sc->jme_ostats; stat->tx_good_frames = CSR_READ_4(sc, JME_STAT_TXGOOD); stat->rx_good_frames = CSR_READ_4(sc, JME_STAT_RXGOOD); reg = CSR_READ_4(sc, JME_STAT_CRCMII); stat->rx_crc_errs = (reg & STAT_RX_CRC_ERR_MASK) >> STAT_RX_CRC_ERR_SHIFT; stat->rx_mii_errs = (reg & STAT_RX_MII_ERR_MASK) >> STAT_RX_MII_ERR_SHIFT; reg = CSR_READ_4(sc, JME_STAT_RXERR); stat->rx_fifo_oflows = (reg & STAT_RXERR_OFLOW_MASK) >> STAT_RXERR_OFLOW_SHIFT; stat->rx_desc_empty = (reg & STAT_RXERR_MPTY_MASK) >> STAT_RXERR_MPTY_SHIFT; reg = CSR_READ_4(sc, JME_STAT_FAIL); stat->rx_bad_frames = (reg & STAT_FAIL_RX_MASK) >> STAT_FAIL_RX_SHIFT; stat->tx_bad_frames = (reg & STAT_FAIL_TX_MASK) >> STAT_FAIL_TX_SHIFT; /* Account for previous counters. */ stat->rx_good_frames += ostat->rx_good_frames; stat->rx_crc_errs += ostat->rx_crc_errs; stat->rx_mii_errs += ostat->rx_mii_errs; stat->rx_fifo_oflows += ostat->rx_fifo_oflows; stat->rx_desc_empty += ostat->rx_desc_empty; stat->rx_bad_frames += ostat->rx_bad_frames; stat->tx_good_frames += ostat->tx_good_frames; stat->tx_bad_frames += ostat->tx_bad_frames; } static void jme_phy_down(struct jme_softc *sc) { uint32_t reg; jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_BMCR, BMCR_PDOWN); if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 5) { reg = CSR_READ_4(sc, JME_PHYPOWDN); reg |= 0x0000000F; CSR_WRITE_4(sc, JME_PHYPOWDN, reg); reg = pci_read_config(sc->jme_dev, JME_PCI_PE1, 4); reg &= ~PE1_GIGA_PDOWN_MASK; reg |= PE1_GIGA_PDOWN_D3; pci_write_config(sc->jme_dev, JME_PCI_PE1, reg, 4); } } static void jme_phy_up(struct jme_softc *sc) { uint32_t reg; uint16_t bmcr; bmcr = jme_miibus_readreg(sc->jme_dev, sc->jme_phyaddr, MII_BMCR); bmcr &= ~BMCR_PDOWN; jme_miibus_writereg(sc->jme_dev, sc->jme_phyaddr, MII_BMCR, bmcr); if (CHIPMODE_REVFM(sc->jme_chip_rev) >= 5) { reg = CSR_READ_4(sc, JME_PHYPOWDN); reg &= ~0x0000000F; CSR_WRITE_4(sc, JME_PHYPOWDN, reg); reg = pci_read_config(sc->jme_dev, JME_PCI_PE1, 4); reg &= ~PE1_GIGA_PDOWN_MASK; reg |= PE1_GIGA_PDOWN_DIS; pci_write_config(sc->jme_dev, JME_PCI_PE1, reg, 4); } } static int sysctl_int_range(SYSCTL_HANDLER_ARGS, int low, int high) { int error, value; if (arg1 == NULL) return (EINVAL); value = *(int *)arg1; error = sysctl_handle_int(oidp, &value, 0, req); if (error || req->newptr == NULL) return (error); if (value < low || value > high) return (EINVAL); *(int *)arg1 = value; return (0); } static int sysctl_hw_jme_tx_coal_to(SYSCTL_HANDLER_ARGS) { return (sysctl_int_range(oidp, arg1, arg2, req, PCCTX_COAL_TO_MIN, PCCTX_COAL_TO_MAX)); } static int sysctl_hw_jme_tx_coal_pkt(SYSCTL_HANDLER_ARGS) { return (sysctl_int_range(oidp, arg1, arg2, req, PCCTX_COAL_PKT_MIN, PCCTX_COAL_PKT_MAX)); } static int sysctl_hw_jme_rx_coal_to(SYSCTL_HANDLER_ARGS) { return (sysctl_int_range(oidp, arg1, arg2, req, PCCRX_COAL_TO_MIN, PCCRX_COAL_TO_MAX)); } static int sysctl_hw_jme_rx_coal_pkt(SYSCTL_HANDLER_ARGS) { return (sysctl_int_range(oidp, arg1, arg2, req, PCCRX_COAL_PKT_MIN, PCCRX_COAL_PKT_MAX)); } static int sysctl_hw_jme_proc_limit(SYSCTL_HANDLER_ARGS) { return (sysctl_int_range(oidp, arg1, arg2, req, JME_PROC_MIN, JME_PROC_MAX)); }