/*- * Copyright (c) 1997, 1998 * Bill Paul . All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Bill Paul. * 4. Neither the name of the author nor the names of any co-contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ #include __FBSDID("$FreeBSD$"); /* * Texas Instruments ThunderLAN driver for FreeBSD 2.2.6 and 3.x. * Supports many Compaq PCI NICs based on the ThunderLAN ethernet controller, * the National Semiconductor DP83840A physical interface and the * Microchip Technology 24Cxx series serial EEPROM. * * Written using the following four documents: * * Texas Instruments ThunderLAN Programmer's Guide (www.ti.com) * National Semiconductor DP83840A data sheet (www.national.com) * Microchip Technology 24C02C data sheet (www.microchip.com) * Micro Linear ML6692 100BaseTX only PHY data sheet (www.microlinear.com) * * Written by Bill Paul * Electrical Engineering Department * Columbia University, New York City */ /* * Some notes about the ThunderLAN: * * The ThunderLAN controller is a single chip containing PCI controller * logic, approximately 3K of on-board SRAM, a LAN controller, and media * independent interface (MII) bus. The MII allows the ThunderLAN chip to * control up to 32 different physical interfaces (PHYs). The ThunderLAN * also has a built-in 10baseT PHY, allowing a single ThunderLAN controller * to act as a complete ethernet interface. * * Other PHYs may be attached to the ThunderLAN; the Compaq 10/100 cards * use a National Semiconductor DP83840A PHY that supports 10 or 100Mb/sec * in full or half duplex. Some of the Compaq Deskpro machines use a * Level 1 LXT970 PHY with the same capabilities. Certain Olicom adapters * use a Micro Linear ML6692 100BaseTX only PHY, which can be used in * concert with the ThunderLAN's internal PHY to provide full 10/100 * support. This is cheaper than using a standalone external PHY for both * 10/100 modes and letting the ThunderLAN's internal PHY go to waste. * A serial EEPROM is also attached to the ThunderLAN chip to provide * power-up default register settings and for storing the adapter's * station address. Although not supported by this driver, the ThunderLAN * chip can also be connected to token ring PHYs. * * The ThunderLAN has a set of registers which can be used to issue * commands, acknowledge interrupts, and to manipulate other internal * registers on its DIO bus. The primary registers can be accessed * using either programmed I/O (inb/outb) or via PCI memory mapping, * depending on how the card is configured during the PCI probing * phase. It is even possible to have both PIO and memory mapped * access turned on at the same time. * * Frame reception and transmission with the ThunderLAN chip is done * using frame 'lists.' A list structure looks more or less like this: * * struct tl_frag { * u_int32_t fragment_address; * u_int32_t fragment_size; * }; * struct tl_list { * u_int32_t forward_pointer; * u_int16_t cstat; * u_int16_t frame_size; * struct tl_frag fragments[10]; * }; * * The forward pointer in the list header can be either a 0 or the address * of another list, which allows several lists to be linked together. Each * list contains up to 10 fragment descriptors. This means the chip allows * ethernet frames to be broken up into up to 10 chunks for transfer to * and from the SRAM. Note that the forward pointer and fragment buffer * addresses are physical memory addresses, not virtual. Note also that * a single ethernet frame can not span lists: if the host wants to * transmit a frame and the frame data is split up over more than 10 * buffers, the frame has to collapsed before it can be transmitted. * * To receive frames, the driver sets up a number of lists and populates * the fragment descriptors, then it sends an RX GO command to the chip. * When a frame is received, the chip will DMA it into the memory regions * specified by the fragment descriptors and then trigger an RX 'end of * frame interrupt' when done. The driver may choose to use only one * fragment per list; this may result is slighltly less efficient use * of memory in exchange for improving performance. * * To transmit frames, the driver again sets up lists and fragment * descriptors, only this time the buffers contain frame data that * is to be DMA'ed into the chip instead of out of it. Once the chip * has transfered the data into its on-board SRAM, it will trigger a * TX 'end of frame' interrupt. It will also generate an 'end of channel' * interrupt when it reaches the end of the list. */ /* * Some notes about this driver: * * The ThunderLAN chip provides a couple of different ways to organize * reception, transmission and interrupt handling. The simplest approach * is to use one list each for transmission and reception. In this mode, * the ThunderLAN will generate two interrupts for every received frame * (one RX EOF and one RX EOC) and two for each transmitted frame (one * TX EOF and one TX EOC). This may make the driver simpler but it hurts * performance to have to handle so many interrupts. * * Initially I wanted to create a circular list of receive buffers so * that the ThunderLAN chip would think there was an infinitely long * receive channel and never deliver an RXEOC interrupt. However this * doesn't work correctly under heavy load: while the manual says the * chip will trigger an RXEOF interrupt each time a frame is copied into * memory, you can't count on the chip waiting around for you to acknowledge * the interrupt before it starts trying to DMA the next frame. The result * is that the chip might traverse the entire circular list and then wrap * around before you have a chance to do anything about it. Consequently, * the receive list is terminated (with a 0 in the forward pointer in the * last element). Each time an RXEOF interrupt arrives, the used list * is shifted to the end of the list. This gives the appearance of an * infinitely large RX chain so long as the driver doesn't fall behind * the chip and allow all of the lists to be filled up. * * If all the lists are filled, the adapter will deliver an RX 'end of * channel' interrupt when it hits the 0 forward pointer at the end of * the chain. The RXEOC handler then cleans out the RX chain and resets * the list head pointer in the ch_parm register and restarts the receiver. * * For frame transmission, it is possible to program the ThunderLAN's * transmit interrupt threshold so that the chip can acknowledge multiple * lists with only a single TX EOF interrupt. This allows the driver to * queue several frames in one shot, and only have to handle a total * two interrupts (one TX EOF and one TX EOC) no matter how many frames * are transmitted. Frame transmission is done directly out of the * mbufs passed to the tl_start() routine via the interface send queue. * The driver simply sets up the fragment descriptors in the transmit * lists to point to the mbuf data regions and sends a TX GO command. * * Note that since the RX and TX lists themselves are always used * only by the driver, the are malloc()ed once at driver initialization * time and never free()ed. * * Also, in order to remain as platform independent as possible, this * driver uses memory mapped register access to manipulate the card * as opposed to programmed I/O. This avoids the use of the inb/outb * (and related) instructions which are specific to the i386 platform. * * Using these techniques, this driver achieves very high performance * by minimizing the amount of interrupts generated during large * transfers and by completely avoiding buffer copies. Frame transfer * to and from the ThunderLAN chip is performed entirely by the chip * itself thereby reducing the load on the host CPU. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include /* for vtophys */ #include /* for vtophys */ #include #include #include #include #include #include #include #include /* * Default to using PIO register access mode to pacify certain * laptop docking stations with built-in ThunderLAN chips that * don't seem to handle memory mapped mode properly. */ #define TL_USEIOSPACE #include MODULE_DEPEND(tl, pci, 1, 1, 1); MODULE_DEPEND(tl, ether, 1, 1, 1); MODULE_DEPEND(tl, miibus, 1, 1, 1); /* "device miibus" required. See GENERIC if you get errors here. */ #include "miibus_if.h" /* * Various supported device vendors/types and their names. */ static struct tl_type tl_devs[] = { { TI_VENDORID, TI_DEVICEID_THUNDERLAN, "Texas Instruments ThunderLAN" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10, "Compaq Netelligent 10" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100, "Compaq Netelligent 10/100" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100_PROLIANT, "Compaq Netelligent 10/100 Proliant" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100_DUAL, "Compaq Netelligent 10/100 Dual Port" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETFLEX_3P_INTEGRATED, "Compaq NetFlex-3/P Integrated" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETFLEX_3P, "Compaq NetFlex-3/P" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETFLEX_3P_BNC, "Compaq NetFlex 3/P w/ BNC" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100_EMBEDDED, "Compaq Netelligent 10/100 TX Embedded UTP" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_T2_UTP_COAX, "Compaq Netelligent 10 T/2 PCI UTP/Coax" }, { COMPAQ_VENDORID, COMPAQ_DEVICEID_NETEL_10_100_TX_UTP, "Compaq Netelligent 10/100 TX UTP" }, { OLICOM_VENDORID, OLICOM_DEVICEID_OC2183, "Olicom OC-2183/2185" }, { OLICOM_VENDORID, OLICOM_DEVICEID_OC2325, "Olicom OC-2325" }, { OLICOM_VENDORID, OLICOM_DEVICEID_OC2326, "Olicom OC-2326 10/100 TX UTP" }, { 0, 0, NULL } }; static int tl_probe(device_t); static int tl_attach(device_t); static int tl_detach(device_t); static int tl_intvec_rxeoc(void *, u_int32_t); static int tl_intvec_txeoc(void *, u_int32_t); static int tl_intvec_txeof(void *, u_int32_t); static int tl_intvec_rxeof(void *, u_int32_t); static int tl_intvec_adchk(void *, u_int32_t); static int tl_intvec_netsts(void *, u_int32_t); static int tl_newbuf(struct tl_softc *, struct tl_chain_onefrag *); static void tl_stats_update(void *); static int tl_encap(struct tl_softc *, struct tl_chain *, struct mbuf *); static void tl_intr(void *); static void tl_start(struct ifnet *); static void tl_start_locked(struct ifnet *); static int tl_ioctl(struct ifnet *, u_long, caddr_t); static void tl_init(void *); static void tl_init_locked(struct tl_softc *); static void tl_stop(struct tl_softc *); static void tl_watchdog(struct ifnet *); static void tl_shutdown(device_t); static int tl_ifmedia_upd(struct ifnet *); static void tl_ifmedia_sts(struct ifnet *, struct ifmediareq *); static u_int8_t tl_eeprom_putbyte(struct tl_softc *, int); static u_int8_t tl_eeprom_getbyte(struct tl_softc *, int, u_int8_t *); static int tl_read_eeprom(struct tl_softc *, caddr_t, int, int); static void tl_mii_sync(struct tl_softc *); static void tl_mii_send(struct tl_softc *, u_int32_t, int); static int tl_mii_readreg(struct tl_softc *, struct tl_mii_frame *); static int tl_mii_writereg(struct tl_softc *, struct tl_mii_frame *); static int tl_miibus_readreg(device_t, int, int); static int tl_miibus_writereg(device_t, int, int, int); static void tl_miibus_statchg(device_t); static void tl_setmode(struct tl_softc *, int); static uint32_t tl_mchash(const uint8_t *); static void tl_setmulti(struct tl_softc *); static void tl_setfilt(struct tl_softc *, caddr_t, int); static void tl_softreset(struct tl_softc *, int); static void tl_hardreset(device_t); static int tl_list_rx_init(struct tl_softc *); static int tl_list_tx_init(struct tl_softc *); static u_int8_t tl_dio_read8(struct tl_softc *, int); static u_int16_t tl_dio_read16(struct tl_softc *, int); static u_int32_t tl_dio_read32(struct tl_softc *, int); static void tl_dio_write8(struct tl_softc *, int, int); static void tl_dio_write16(struct tl_softc *, int, int); static void tl_dio_write32(struct tl_softc *, int, int); static void tl_dio_setbit(struct tl_softc *, int, int); static void tl_dio_clrbit(struct tl_softc *, int, int); static void tl_dio_setbit16(struct tl_softc *, int, int); static void tl_dio_clrbit16(struct tl_softc *, int, int); #ifdef TL_USEIOSPACE #define TL_RES SYS_RES_IOPORT #define TL_RID TL_PCI_LOIO #else #define TL_RES SYS_RES_MEMORY #define TL_RID TL_PCI_LOMEM #endif static device_method_t tl_methods[] = { /* Device interface */ DEVMETHOD(device_probe, tl_probe), DEVMETHOD(device_attach, tl_attach), DEVMETHOD(device_detach, tl_detach), DEVMETHOD(device_shutdown, tl_shutdown), /* bus interface */ DEVMETHOD(bus_print_child, bus_generic_print_child), DEVMETHOD(bus_driver_added, bus_generic_driver_added), /* MII interface */ DEVMETHOD(miibus_readreg, tl_miibus_readreg), DEVMETHOD(miibus_writereg, tl_miibus_writereg), DEVMETHOD(miibus_statchg, tl_miibus_statchg), { 0, 0 } }; static driver_t tl_driver = { "tl", tl_methods, sizeof(struct tl_softc) }; static devclass_t tl_devclass; DRIVER_MODULE(tl, pci, tl_driver, tl_devclass, 0, 0); DRIVER_MODULE(miibus, tl, miibus_driver, miibus_devclass, 0, 0); static u_int8_t tl_dio_read8(sc, reg) struct tl_softc *sc; int reg; { CSR_WRITE_2(sc, TL_DIO_ADDR, reg); return(CSR_READ_1(sc, TL_DIO_DATA + (reg & 3))); } static u_int16_t tl_dio_read16(sc, reg) struct tl_softc *sc; int reg; { CSR_WRITE_2(sc, TL_DIO_ADDR, reg); return(CSR_READ_2(sc, TL_DIO_DATA + (reg & 3))); } static u_int32_t tl_dio_read32(sc, reg) struct tl_softc *sc; int reg; { CSR_WRITE_2(sc, TL_DIO_ADDR, reg); return(CSR_READ_4(sc, TL_DIO_DATA + (reg & 3))); } static void tl_dio_write8(sc, reg, val) struct tl_softc *sc; int reg; int val; { CSR_WRITE_2(sc, TL_DIO_ADDR, reg); CSR_WRITE_1(sc, TL_DIO_DATA + (reg & 3), val); return; } static void tl_dio_write16(sc, reg, val) struct tl_softc *sc; int reg; int val; { CSR_WRITE_2(sc, TL_DIO_ADDR, reg); CSR_WRITE_2(sc, TL_DIO_DATA + (reg & 3), val); return; } static void tl_dio_write32(sc, reg, val) struct tl_softc *sc; int reg; int val; { CSR_WRITE_2(sc, TL_DIO_ADDR, reg); CSR_WRITE_4(sc, TL_DIO_DATA + (reg & 3), val); return; } static void tl_dio_setbit(sc, reg, bit) struct tl_softc *sc; int reg; int bit; { u_int8_t f; CSR_WRITE_2(sc, TL_DIO_ADDR, reg); f = CSR_READ_1(sc, TL_DIO_DATA + (reg & 3)); f |= bit; CSR_WRITE_1(sc, TL_DIO_DATA + (reg & 3), f); return; } static void tl_dio_clrbit(sc, reg, bit) struct tl_softc *sc; int reg; int bit; { u_int8_t f; CSR_WRITE_2(sc, TL_DIO_ADDR, reg); f = CSR_READ_1(sc, TL_DIO_DATA + (reg & 3)); f &= ~bit; CSR_WRITE_1(sc, TL_DIO_DATA + (reg & 3), f); return; } static void tl_dio_setbit16(sc, reg, bit) struct tl_softc *sc; int reg; int bit; { u_int16_t f; CSR_WRITE_2(sc, TL_DIO_ADDR, reg); f = CSR_READ_2(sc, TL_DIO_DATA + (reg & 3)); f |= bit; CSR_WRITE_2(sc, TL_DIO_DATA + (reg & 3), f); return; } static void tl_dio_clrbit16(sc, reg, bit) struct tl_softc *sc; int reg; int bit; { u_int16_t f; CSR_WRITE_2(sc, TL_DIO_ADDR, reg); f = CSR_READ_2(sc, TL_DIO_DATA + (reg & 3)); f &= ~bit; CSR_WRITE_2(sc, TL_DIO_DATA + (reg & 3), f); return; } /* * Send an instruction or address to the EEPROM, check for ACK. */ static u_int8_t tl_eeprom_putbyte(sc, byte) struct tl_softc *sc; int byte; { register int i, ack = 0; /* * Make sure we're in TX mode. */ tl_dio_setbit(sc, TL_NETSIO, TL_SIO_ETXEN); /* * Feed in each bit and stobe the clock. */ for (i = 0x80; i; i >>= 1) { if (byte & i) { tl_dio_setbit(sc, TL_NETSIO, TL_SIO_EDATA); } else { tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_EDATA); } DELAY(1); tl_dio_setbit(sc, TL_NETSIO, TL_SIO_ECLOK); DELAY(1); tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ECLOK); } /* * Turn off TX mode. */ tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ETXEN); /* * Check for ack. */ tl_dio_setbit(sc, TL_NETSIO, TL_SIO_ECLOK); ack = tl_dio_read8(sc, TL_NETSIO) & TL_SIO_EDATA; tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ECLOK); return(ack); } /* * Read a byte of data stored in the EEPROM at address 'addr.' */ static u_int8_t tl_eeprom_getbyte(sc, addr, dest) struct tl_softc *sc; int addr; u_int8_t *dest; { register int i; u_int8_t byte = 0; struct ifnet *ifp = sc->tl_ifp; tl_dio_write8(sc, TL_NETSIO, 0); EEPROM_START; /* * Send write control code to EEPROM. */ if (tl_eeprom_putbyte(sc, EEPROM_CTL_WRITE)) { if_printf(ifp, "failed to send write command, status: %x\n", tl_dio_read8(sc, TL_NETSIO)); return(1); } /* * Send address of byte we want to read. */ if (tl_eeprom_putbyte(sc, addr)) { if_printf(ifp, "failed to send address, status: %x\n", tl_dio_read8(sc, TL_NETSIO)); return(1); } EEPROM_STOP; EEPROM_START; /* * Send read control code to EEPROM. */ if (tl_eeprom_putbyte(sc, EEPROM_CTL_READ)) { if_printf(ifp, "failed to send write command, status: %x\n", tl_dio_read8(sc, TL_NETSIO)); return(1); } /* * Start reading bits from EEPROM. */ tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ETXEN); for (i = 0x80; i; i >>= 1) { tl_dio_setbit(sc, TL_NETSIO, TL_SIO_ECLOK); DELAY(1); if (tl_dio_read8(sc, TL_NETSIO) & TL_SIO_EDATA) byte |= i; tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_ECLOK); DELAY(1); } EEPROM_STOP; /* * No ACK generated for read, so just return byte. */ *dest = byte; return(0); } /* * Read a sequence of bytes from the EEPROM. */ static int tl_read_eeprom(sc, dest, off, cnt) struct tl_softc *sc; caddr_t dest; int off; int cnt; { int err = 0, i; u_int8_t byte = 0; for (i = 0; i < cnt; i++) { err = tl_eeprom_getbyte(sc, off + i, &byte); if (err) break; *(dest + i) = byte; } return(err ? 1 : 0); } static void tl_mii_sync(sc) struct tl_softc *sc; { register int i; tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MTXEN); for (i = 0; i < 32; i++) { tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MCLK); tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MCLK); } return; } static void tl_mii_send(sc, bits, cnt) struct tl_softc *sc; u_int32_t bits; int cnt; { int i; for (i = (0x1 << (cnt - 1)); i; i >>= 1) { tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MCLK); if (bits & i) { tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MDATA); } else { tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MDATA); } tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MCLK); } } static int tl_mii_readreg(sc, frame) struct tl_softc *sc; struct tl_mii_frame *frame; { int i, ack; int minten = 0; tl_mii_sync(sc); /* * Set up frame for RX. */ frame->mii_stdelim = TL_MII_STARTDELIM; frame->mii_opcode = TL_MII_READOP; frame->mii_turnaround = 0; frame->mii_data = 0; /* * Turn off MII interrupt by forcing MINTEN low. */ minten = tl_dio_read8(sc, TL_NETSIO) & TL_SIO_MINTEN; if (minten) { tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MINTEN); } /* * Turn on data xmit. */ tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MTXEN); /* * Send command/address info. */ tl_mii_send(sc, frame->mii_stdelim, 2); tl_mii_send(sc, frame->mii_opcode, 2); tl_mii_send(sc, frame->mii_phyaddr, 5); tl_mii_send(sc, frame->mii_regaddr, 5); /* * Turn off xmit. */ tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MTXEN); /* Idle bit */ tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MCLK); tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MCLK); /* Check for ack */ tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MCLK); ack = tl_dio_read8(sc, TL_NETSIO) & TL_SIO_MDATA; /* Complete the cycle */ tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MCLK); /* * Now try reading data bits. If the ack failed, we still * need to clock through 16 cycles to keep the PHYs in sync. */ if (ack) { for(i = 0; i < 16; i++) { tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MCLK); tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MCLK); } goto fail; } for (i = 0x8000; i; i >>= 1) { tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MCLK); if (!ack) { if (tl_dio_read8(sc, TL_NETSIO) & TL_SIO_MDATA) frame->mii_data |= i; } tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MCLK); } fail: tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MCLK); tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MCLK); /* Reenable interrupts */ if (minten) { tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MINTEN); } if (ack) return(1); return(0); } static int tl_mii_writereg(sc, frame) struct tl_softc *sc; struct tl_mii_frame *frame; { int minten; tl_mii_sync(sc); /* * Set up frame for TX. */ frame->mii_stdelim = TL_MII_STARTDELIM; frame->mii_opcode = TL_MII_WRITEOP; frame->mii_turnaround = TL_MII_TURNAROUND; /* * Turn off MII interrupt by forcing MINTEN low. */ minten = tl_dio_read8(sc, TL_NETSIO) & TL_SIO_MINTEN; if (minten) { tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MINTEN); } /* * Turn on data output. */ tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MTXEN); tl_mii_send(sc, frame->mii_stdelim, 2); tl_mii_send(sc, frame->mii_opcode, 2); tl_mii_send(sc, frame->mii_phyaddr, 5); tl_mii_send(sc, frame->mii_regaddr, 5); tl_mii_send(sc, frame->mii_turnaround, 2); tl_mii_send(sc, frame->mii_data, 16); tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MCLK); tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MCLK); /* * Turn off xmit. */ tl_dio_clrbit(sc, TL_NETSIO, TL_SIO_MTXEN); /* Reenable interrupts */ if (minten) tl_dio_setbit(sc, TL_NETSIO, TL_SIO_MINTEN); return(0); } static int tl_miibus_readreg(dev, phy, reg) device_t dev; int phy, reg; { struct tl_softc *sc; struct tl_mii_frame frame; sc = device_get_softc(dev); bzero((char *)&frame, sizeof(frame)); frame.mii_phyaddr = phy; frame.mii_regaddr = reg; tl_mii_readreg(sc, &frame); return(frame.mii_data); } static int tl_miibus_writereg(dev, phy, reg, data) device_t dev; int phy, reg, data; { struct tl_softc *sc; struct tl_mii_frame frame; sc = device_get_softc(dev); bzero((char *)&frame, sizeof(frame)); frame.mii_phyaddr = phy; frame.mii_regaddr = reg; frame.mii_data = data; tl_mii_writereg(sc, &frame); return(0); } static void tl_miibus_statchg(dev) device_t dev; { struct tl_softc *sc; struct mii_data *mii; sc = device_get_softc(dev); mii = device_get_softc(sc->tl_miibus); if ((mii->mii_media_active & IFM_GMASK) == IFM_FDX) { tl_dio_setbit(sc, TL_NETCMD, TL_CMD_DUPLEX); } else { tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_DUPLEX); } return; } /* * Set modes for bitrate devices. */ static void tl_setmode(sc, media) struct tl_softc *sc; int media; { if (IFM_SUBTYPE(media) == IFM_10_5) tl_dio_setbit(sc, TL_ACOMMIT, TL_AC_MTXD1); if (IFM_SUBTYPE(media) == IFM_10_T) { tl_dio_clrbit(sc, TL_ACOMMIT, TL_AC_MTXD1); if ((media & IFM_GMASK) == IFM_FDX) { tl_dio_clrbit(sc, TL_ACOMMIT, TL_AC_MTXD3); tl_dio_setbit(sc, TL_NETCMD, TL_CMD_DUPLEX); } else { tl_dio_setbit(sc, TL_ACOMMIT, TL_AC_MTXD3); tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_DUPLEX); } } return; } /* * Calculate the hash of a MAC address for programming the multicast hash * table. This hash is simply the address split into 6-bit chunks * XOR'd, e.g. * byte: 000000|00 1111|1111 22|222222|333333|33 4444|4444 55|555555 * bit: 765432|10 7654|3210 76|543210|765432|10 7654|3210 76|543210 * Bytes 0-2 and 3-5 are symmetrical, so are folded together. Then * the folded 24-bit value is split into 6-bit portions and XOR'd. */ static uint32_t tl_mchash(addr) const uint8_t *addr; { int t; t = (addr[0] ^ addr[3]) << 16 | (addr[1] ^ addr[4]) << 8 | (addr[2] ^ addr[5]); return ((t >> 18) ^ (t >> 12) ^ (t >> 6) ^ t) & 0x3f; } /* * The ThunderLAN has a perfect MAC address filter in addition to * the multicast hash filter. The perfect filter can be programmed * with up to four MAC addresses. The first one is always used to * hold the station address, which leaves us free to use the other * three for multicast addresses. */ static void tl_setfilt(sc, addr, slot) struct tl_softc *sc; caddr_t addr; int slot; { int i; u_int16_t regaddr; regaddr = TL_AREG0_B5 + (slot * ETHER_ADDR_LEN); for (i = 0; i < ETHER_ADDR_LEN; i++) tl_dio_write8(sc, regaddr + i, *(addr + i)); return; } /* * XXX In FreeBSD 3.0, multicast addresses are managed using a doubly * linked list. This is fine, except addresses are added from the head * end of the list. We want to arrange for 224.0.0.1 (the "all hosts") * group to always be in the perfect filter, but as more groups are added, * the 224.0.0.1 entry (which is always added first) gets pushed down * the list and ends up at the tail. So after 3 or 4 multicast groups * are added, the all-hosts entry gets pushed out of the perfect filter * and into the hash table. * * Because the multicast list is a doubly-linked list as opposed to a * circular queue, we don't have the ability to just grab the tail of * the list and traverse it backwards. Instead, we have to traverse * the list once to find the tail, then traverse it again backwards to * update the multicast filter. */ static void tl_setmulti(sc) struct tl_softc *sc; { struct ifnet *ifp; u_int32_t hashes[2] = { 0, 0 }; int h, i; struct ifmultiaddr *ifma; u_int8_t dummy[] = { 0, 0, 0, 0, 0 ,0 }; ifp = sc->tl_ifp; /* First, zot all the existing filters. */ for (i = 1; i < 4; i++) tl_setfilt(sc, (caddr_t)&dummy, i); tl_dio_write32(sc, TL_HASH1, 0); tl_dio_write32(sc, TL_HASH2, 0); /* Now program new ones. */ if (ifp->if_flags & IFF_ALLMULTI) { hashes[0] = 0xFFFFFFFF; hashes[1] = 0xFFFFFFFF; } else { i = 1; IF_ADDR_LOCK(ifp); TAILQ_FOREACH_REVERSE(ifma, &ifp->if_multiaddrs, ifmultihead, ifma_link) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; /* * Program the first three multicast groups * into the perfect filter. For all others, * use the hash table. */ if (i < 4) { tl_setfilt(sc, LLADDR((struct sockaddr_dl *)ifma->ifma_addr), i); i++; continue; } h = tl_mchash( LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); if (h < 32) hashes[0] |= (1 << h); else hashes[1] |= (1 << (h - 32)); } IF_ADDR_UNLOCK(ifp); } tl_dio_write32(sc, TL_HASH1, hashes[0]); tl_dio_write32(sc, TL_HASH2, hashes[1]); return; } /* * This routine is recommended by the ThunderLAN manual to insure that * the internal PHY is powered up correctly. It also recommends a one * second pause at the end to 'wait for the clocks to start' but in my * experience this isn't necessary. */ static void tl_hardreset(dev) device_t dev; { struct tl_softc *sc; int i; u_int16_t flags; sc = device_get_softc(dev); tl_mii_sync(sc); flags = BMCR_LOOP|BMCR_ISO|BMCR_PDOWN; for (i = 0; i < MII_NPHY; i++) tl_miibus_writereg(dev, i, MII_BMCR, flags); tl_miibus_writereg(dev, 31, MII_BMCR, BMCR_ISO); DELAY(50000); tl_miibus_writereg(dev, 31, MII_BMCR, BMCR_LOOP|BMCR_ISO); tl_mii_sync(sc); while(tl_miibus_readreg(dev, 31, MII_BMCR) & BMCR_RESET); DELAY(50000); return; } static void tl_softreset(sc, internal) struct tl_softc *sc; int internal; { u_int32_t cmd, dummy, i; /* Assert the adapter reset bit. */ CMD_SET(sc, TL_CMD_ADRST); /* Turn off interrupts */ CMD_SET(sc, TL_CMD_INTSOFF); /* First, clear the stats registers. */ for (i = 0; i < 5; i++) dummy = tl_dio_read32(sc, TL_TXGOODFRAMES); /* Clear Areg and Hash registers */ for (i = 0; i < 8; i++) tl_dio_write32(sc, TL_AREG0_B5, 0x00000000); /* * Set up Netconfig register. Enable one channel and * one fragment mode. */ tl_dio_setbit16(sc, TL_NETCONFIG, TL_CFG_ONECHAN|TL_CFG_ONEFRAG); if (internal && !sc->tl_bitrate) { tl_dio_setbit16(sc, TL_NETCONFIG, TL_CFG_PHYEN); } else { tl_dio_clrbit16(sc, TL_NETCONFIG, TL_CFG_PHYEN); } /* Handle cards with bitrate devices. */ if (sc->tl_bitrate) tl_dio_setbit16(sc, TL_NETCONFIG, TL_CFG_BITRATE); /* * Load adapter irq pacing timer and tx threshold. * We make the transmit threshold 1 initially but we may * change that later. */ cmd = CSR_READ_4(sc, TL_HOSTCMD); cmd |= TL_CMD_NES; cmd &= ~(TL_CMD_RT|TL_CMD_EOC|TL_CMD_ACK_MASK|TL_CMD_CHSEL_MASK); CMD_PUT(sc, cmd | (TL_CMD_LDTHR | TX_THR)); CMD_PUT(sc, cmd | (TL_CMD_LDTMR | 0x00000003)); /* Unreset the MII */ tl_dio_setbit(sc, TL_NETSIO, TL_SIO_NMRST); /* Take the adapter out of reset */ tl_dio_setbit(sc, TL_NETCMD, TL_CMD_NRESET|TL_CMD_NWRAP); /* Wait for things to settle down a little. */ DELAY(500); return; } /* * Probe for a ThunderLAN chip. Check the PCI vendor and device IDs * against our list and return its name if we find a match. */ static int tl_probe(dev) device_t dev; { struct tl_type *t; t = tl_devs; while(t->tl_name != NULL) { if ((pci_get_vendor(dev) == t->tl_vid) && (pci_get_device(dev) == t->tl_did)) { device_set_desc(dev, t->tl_name); return (BUS_PROBE_DEFAULT); } t++; } return(ENXIO); } static int tl_attach(dev) device_t dev; { int i; u_int16_t did, vid; struct tl_type *t; struct ifnet *ifp; struct tl_softc *sc; int unit, error = 0, rid; u_char eaddr[6]; vid = pci_get_vendor(dev); did = pci_get_device(dev); sc = device_get_softc(dev); unit = device_get_unit(dev); t = tl_devs; while(t->tl_name != NULL) { if (vid == t->tl_vid && did == t->tl_did) break; t++; } if (t->tl_name == NULL) { device_printf(dev, "unknown device!?\n"); return (ENXIO); } mtx_init(&sc->tl_mtx, device_get_nameunit(dev), MTX_NETWORK_LOCK, MTX_DEF); /* * Map control/status registers. */ pci_enable_busmaster(dev); #ifdef TL_USEIOSPACE rid = TL_PCI_LOIO; sc->tl_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE); /* * Some cards have the I/O and memory mapped address registers * reversed. Try both combinations before giving up. */ if (sc->tl_res == NULL) { rid = TL_PCI_LOMEM; sc->tl_res = bus_alloc_resource_any(dev, SYS_RES_IOPORT, &rid, RF_ACTIVE); } #else rid = TL_PCI_LOMEM; sc->tl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); if (sc->tl_res == NULL) { rid = TL_PCI_LOIO; sc->tl_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY, &rid, RF_ACTIVE); } #endif if (sc->tl_res == NULL) { device_printf(dev, "couldn't map ports/memory\n"); error = ENXIO; goto fail; } sc->tl_btag = rman_get_bustag(sc->tl_res); sc->tl_bhandle = rman_get_bushandle(sc->tl_res); #ifdef notdef /* * The ThunderLAN manual suggests jacking the PCI latency * timer all the way up to its maximum value. I'm not sure * if this is really necessary, but what the manual wants, * the manual gets. */ command = pci_read_config(dev, TL_PCI_LATENCY_TIMER, 4); command |= 0x0000FF00; pci_write_config(dev, TL_PCI_LATENCY_TIMER, command, 4); #endif /* Allocate interrupt */ rid = 0; sc->tl_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ, &rid, RF_SHAREABLE | RF_ACTIVE); if (sc->tl_irq == NULL) { device_printf(dev, "couldn't map interrupt\n"); error = ENXIO; goto fail; } /* * Now allocate memory for the TX and RX lists. */ sc->tl_ldata = contigmalloc(sizeof(struct tl_list_data), M_DEVBUF, M_NOWAIT, 0, 0xffffffff, PAGE_SIZE, 0); if (sc->tl_ldata == NULL) { device_printf(dev, "no memory for list buffers!\n"); error = ENXIO; goto fail; } bzero(sc->tl_ldata, sizeof(struct tl_list_data)); sc->tl_dinfo = t; if (t->tl_vid == COMPAQ_VENDORID || t->tl_vid == TI_VENDORID) sc->tl_eeaddr = TL_EEPROM_EADDR; if (t->tl_vid == OLICOM_VENDORID) sc->tl_eeaddr = TL_EEPROM_EADDR_OC; /* Reset the adapter. */ tl_softreset(sc, 1); tl_hardreset(dev); tl_softreset(sc, 1); /* * Get station address from the EEPROM. */ if (tl_read_eeprom(sc, eaddr, sc->tl_eeaddr, ETHER_ADDR_LEN)) { device_printf(dev, "failed to read station address\n"); error = ENXIO; goto fail; } /* * XXX Olicom, in its desire to be different from the * rest of the world, has done strange things with the * encoding of the station address in the EEPROM. First * of all, they store the address at offset 0xF8 rather * than at 0x83 like the ThunderLAN manual suggests. * Second, they store the address in three 16-bit words in * network byte order, as opposed to storing it sequentially * like all the other ThunderLAN cards. In order to get * the station address in a form that matches what the Olicom * diagnostic utility specifies, we have to byte-swap each * word. To make things even more confusing, neither 00:00:28 * nor 00:00:24 appear in the IEEE OUI database. */ if (sc->tl_dinfo->tl_vid == OLICOM_VENDORID) { for (i = 0; i < ETHER_ADDR_LEN; i += 2) { u_int16_t *p; p = (u_int16_t *)&eaddr[i]; *p = ntohs(*p); } } ifp = sc->tl_ifp = if_alloc(IFT_ETHER); if (ifp == NULL) { device_printf(dev, "can not if_alloc()\n"); error = ENOSPC; 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 = tl_ioctl; ifp->if_start = tl_start; ifp->if_watchdog = tl_watchdog; ifp->if_init = tl_init; ifp->if_mtu = ETHERMTU; ifp->if_snd.ifq_maxlen = TL_TX_LIST_CNT - 1; callout_init_mtx(&sc->tl_stat_callout, &sc->tl_mtx, 0); /* Reset the adapter again. */ tl_softreset(sc, 1); tl_hardreset(dev); tl_softreset(sc, 1); /* * Do MII setup. If no PHYs are found, then this is a * bitrate ThunderLAN chip that only supports 10baseT * and AUI/BNC. */ if (mii_phy_probe(dev, &sc->tl_miibus, tl_ifmedia_upd, tl_ifmedia_sts)) { struct ifmedia *ifm; sc->tl_bitrate = 1; ifmedia_init(&sc->ifmedia, 0, tl_ifmedia_upd, tl_ifmedia_sts); ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL); ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_5, 0, NULL); ifmedia_set(&sc->ifmedia, IFM_ETHER|IFM_10_T); /* Reset again, this time setting bitrate mode. */ tl_softreset(sc, 1); ifm = &sc->ifmedia; ifm->ifm_media = ifm->ifm_cur->ifm_media; tl_ifmedia_upd(ifp); } /* * Call MI attach routine. */ ether_ifattach(ifp, eaddr); /* Hook interrupt last to avoid having to lock softc */ error = bus_setup_intr(dev, sc->tl_irq, INTR_TYPE_NET | INTR_MPSAFE, tl_intr, sc, &sc->tl_intrhand); if (error) { device_printf(dev, "couldn't set up irq\n"); ether_ifdetach(ifp); goto fail; } fail: if (error) tl_detach(dev); return(error); } /* * Shutdown hardware and free up resources. This can be called any * time after the mutex has been initialized. It is called in both * the error case in attach and the normal detach case so it needs * to be careful about only freeing resources that have actually been * allocated. */ static int tl_detach(dev) device_t dev; { struct tl_softc *sc; struct ifnet *ifp; sc = device_get_softc(dev); KASSERT(mtx_initialized(&sc->tl_mtx), ("tl mutex not initialized")); ifp = sc->tl_ifp; /* These should only be active if attach succeeded */ if (device_is_attached(dev)) { TL_LOCK(sc); tl_stop(sc); TL_UNLOCK(sc); callout_drain(&sc->tl_stat_callout); ether_ifdetach(ifp); } if (sc->tl_miibus) device_delete_child(dev, sc->tl_miibus); bus_generic_detach(dev); if (sc->tl_ldata) contigfree(sc->tl_ldata, sizeof(struct tl_list_data), M_DEVBUF); if (sc->tl_bitrate) ifmedia_removeall(&sc->ifmedia); if (sc->tl_intrhand) bus_teardown_intr(dev, sc->tl_irq, sc->tl_intrhand); if (sc->tl_irq) bus_release_resource(dev, SYS_RES_IRQ, 0, sc->tl_irq); if (sc->tl_res) bus_release_resource(dev, TL_RES, TL_RID, sc->tl_res); if (ifp) if_free(ifp); mtx_destroy(&sc->tl_mtx); return(0); } /* * Initialize the transmit lists. */ static int tl_list_tx_init(sc) struct tl_softc *sc; { struct tl_chain_data *cd; struct tl_list_data *ld; int i; cd = &sc->tl_cdata; ld = sc->tl_ldata; for (i = 0; i < TL_TX_LIST_CNT; i++) { cd->tl_tx_chain[i].tl_ptr = &ld->tl_tx_list[i]; if (i == (TL_TX_LIST_CNT - 1)) cd->tl_tx_chain[i].tl_next = NULL; else cd->tl_tx_chain[i].tl_next = &cd->tl_tx_chain[i + 1]; } cd->tl_tx_free = &cd->tl_tx_chain[0]; cd->tl_tx_tail = cd->tl_tx_head = NULL; sc->tl_txeoc = 1; return(0); } /* * Initialize the RX lists and allocate mbufs for them. */ static int tl_list_rx_init(sc) struct tl_softc *sc; { struct tl_chain_data *cd; struct tl_list_data *ld; int i; cd = &sc->tl_cdata; ld = sc->tl_ldata; for (i = 0; i < TL_RX_LIST_CNT; i++) { cd->tl_rx_chain[i].tl_ptr = (struct tl_list_onefrag *)&ld->tl_rx_list[i]; if (tl_newbuf(sc, &cd->tl_rx_chain[i]) == ENOBUFS) return(ENOBUFS); if (i == (TL_RX_LIST_CNT - 1)) { cd->tl_rx_chain[i].tl_next = NULL; ld->tl_rx_list[i].tlist_fptr = 0; } else { cd->tl_rx_chain[i].tl_next = &cd->tl_rx_chain[i + 1]; ld->tl_rx_list[i].tlist_fptr = vtophys(&ld->tl_rx_list[i + 1]); } } cd->tl_rx_head = &cd->tl_rx_chain[0]; cd->tl_rx_tail = &cd->tl_rx_chain[TL_RX_LIST_CNT - 1]; return(0); } static int tl_newbuf(sc, c) struct tl_softc *sc; struct tl_chain_onefrag *c; { struct mbuf *m_new = NULL; m_new = m_getcl(M_DONTWAIT, MT_DATA, M_PKTHDR); if (m_new == NULL) return(ENOBUFS); c->tl_mbuf = m_new; c->tl_next = NULL; c->tl_ptr->tlist_frsize = MCLBYTES; c->tl_ptr->tlist_fptr = 0; c->tl_ptr->tl_frag.tlist_dadr = vtophys(mtod(m_new, caddr_t)); c->tl_ptr->tl_frag.tlist_dcnt = MCLBYTES; c->tl_ptr->tlist_cstat = TL_CSTAT_READY; return(0); } /* * Interrupt handler for RX 'end of frame' condition (EOF). This * tells us that a full ethernet frame has been captured and we need * to handle it. * * Reception is done using 'lists' which consist of a header and a * series of 10 data count/data address pairs that point to buffers. * Initially you're supposed to create a list, populate it with pointers * to buffers, then load the physical address of the list into the * ch_parm register. The adapter is then supposed to DMA the received * frame into the buffers for you. * * To make things as fast as possible, we have the chip DMA directly * into mbufs. This saves us from having to do a buffer copy: we can * just hand the mbufs directly to ether_input(). Once the frame has * been sent on its way, the 'list' structure is assigned a new buffer * and moved to the end of the RX chain. As long we we stay ahead of * the chip, it will always think it has an endless receive channel. * * If we happen to fall behind and the chip manages to fill up all of * the buffers, it will generate an end of channel interrupt and wait * for us to empty the chain and restart the receiver. */ static int tl_intvec_rxeof(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; int r = 0, total_len = 0; struct ether_header *eh; struct mbuf *m; struct ifnet *ifp; struct tl_chain_onefrag *cur_rx; sc = xsc; ifp = sc->tl_ifp; TL_LOCK_ASSERT(sc); while(sc->tl_cdata.tl_rx_head != NULL) { cur_rx = sc->tl_cdata.tl_rx_head; if (!(cur_rx->tl_ptr->tlist_cstat & TL_CSTAT_FRAMECMP)) break; r++; sc->tl_cdata.tl_rx_head = cur_rx->tl_next; m = cur_rx->tl_mbuf; total_len = cur_rx->tl_ptr->tlist_frsize; if (tl_newbuf(sc, cur_rx) == ENOBUFS) { ifp->if_ierrors++; cur_rx->tl_ptr->tlist_frsize = MCLBYTES; cur_rx->tl_ptr->tlist_cstat = TL_CSTAT_READY; cur_rx->tl_ptr->tl_frag.tlist_dcnt = MCLBYTES; continue; } sc->tl_cdata.tl_rx_tail->tl_ptr->tlist_fptr = vtophys(cur_rx->tl_ptr); sc->tl_cdata.tl_rx_tail->tl_next = cur_rx; sc->tl_cdata.tl_rx_tail = cur_rx; /* * Note: when the ThunderLAN chip is in 'capture all * frames' mode, it will receive its own transmissions. * We drop don't need to process our own transmissions, * so we drop them here and continue. */ eh = mtod(m, struct ether_header *); /*if (ifp->if_flags & IFF_PROMISC && */ if (!bcmp(eh->ether_shost, IF_LLADDR(sc->tl_ifp), ETHER_ADDR_LEN)) { m_freem(m); continue; } m->m_pkthdr.rcvif = ifp; m->m_pkthdr.len = m->m_len = total_len; TL_UNLOCK(sc); (*ifp->if_input)(ifp, m); TL_LOCK(sc); } return(r); } /* * The RX-EOC condition hits when the ch_parm address hasn't been * initialized or the adapter reached a list with a forward pointer * of 0 (which indicates the end of the chain). In our case, this means * the card has hit the end of the receive buffer chain and we need to * empty out the buffers and shift the pointer back to the beginning again. */ static int tl_intvec_rxeoc(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; int r; struct tl_chain_data *cd; sc = xsc; cd = &sc->tl_cdata; /* Flush out the receive queue and ack RXEOF interrupts. */ r = tl_intvec_rxeof(xsc, type); CMD_PUT(sc, TL_CMD_ACK | r | (type & ~(0x00100000))); r = 1; cd->tl_rx_head = &cd->tl_rx_chain[0]; cd->tl_rx_tail = &cd->tl_rx_chain[TL_RX_LIST_CNT - 1]; CSR_WRITE_4(sc, TL_CH_PARM, vtophys(sc->tl_cdata.tl_rx_head->tl_ptr)); r |= (TL_CMD_GO|TL_CMD_RT); return(r); } static int tl_intvec_txeof(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; int r = 0; struct tl_chain *cur_tx; sc = xsc; /* * Go through our tx list and free mbufs for those * frames that have been sent. */ while (sc->tl_cdata.tl_tx_head != NULL) { cur_tx = sc->tl_cdata.tl_tx_head; if (!(cur_tx->tl_ptr->tlist_cstat & TL_CSTAT_FRAMECMP)) break; sc->tl_cdata.tl_tx_head = cur_tx->tl_next; r++; m_freem(cur_tx->tl_mbuf); cur_tx->tl_mbuf = NULL; cur_tx->tl_next = sc->tl_cdata.tl_tx_free; sc->tl_cdata.tl_tx_free = cur_tx; if (!cur_tx->tl_ptr->tlist_fptr) break; } return(r); } /* * The transmit end of channel interrupt. The adapter triggers this * interrupt to tell us it hit the end of the current transmit list. * * A note about this: it's possible for a condition to arise where * tl_start() may try to send frames between TXEOF and TXEOC interrupts. * You have to avoid this since the chip expects things to go in a * particular order: transmit, acknowledge TXEOF, acknowledge TXEOC. * When the TXEOF handler is called, it will free all of the transmitted * frames and reset the tx_head pointer to NULL. However, a TXEOC * interrupt should be received and acknowledged before any more frames * are queued for transmission. If tl_statrt() is called after TXEOF * resets the tx_head pointer but _before_ the TXEOC interrupt arrives, * it could attempt to issue a transmit command prematurely. * * To guard against this, tl_start() will only issue transmit commands * if the tl_txeoc flag is set, and only the TXEOC interrupt handler * can set this flag once tl_start() has cleared it. */ static int tl_intvec_txeoc(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; struct ifnet *ifp; u_int32_t cmd; sc = xsc; ifp = sc->tl_ifp; /* Clear the timeout timer. */ ifp->if_timer = 0; if (sc->tl_cdata.tl_tx_head == NULL) { ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; sc->tl_cdata.tl_tx_tail = NULL; sc->tl_txeoc = 1; } else { sc->tl_txeoc = 0; /* First we have to ack the EOC interrupt. */ CMD_PUT(sc, TL_CMD_ACK | 0x00000001 | type); /* Then load the address of the next TX list. */ CSR_WRITE_4(sc, TL_CH_PARM, vtophys(sc->tl_cdata.tl_tx_head->tl_ptr)); /* Restart TX channel. */ cmd = CSR_READ_4(sc, TL_HOSTCMD); cmd &= ~TL_CMD_RT; cmd |= TL_CMD_GO|TL_CMD_INTSON; CMD_PUT(sc, cmd); return(0); } return(1); } static int tl_intvec_adchk(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; sc = xsc; if (type) if_printf(sc->tl_ifp, "adapter check: %x\n", (unsigned int)CSR_READ_4(sc, TL_CH_PARM)); tl_softreset(sc, 1); tl_stop(sc); tl_init_locked(sc); CMD_SET(sc, TL_CMD_INTSON); return(0); } static int tl_intvec_netsts(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; u_int16_t netsts; sc = xsc; netsts = tl_dio_read16(sc, TL_NETSTS); tl_dio_write16(sc, TL_NETSTS, netsts); if_printf(sc->tl_ifp, "network status: %x\n", netsts); return(1); } static void tl_intr(xsc) void *xsc; { struct tl_softc *sc; struct ifnet *ifp; int r = 0; u_int32_t type = 0; u_int16_t ints = 0; u_int8_t ivec = 0; sc = xsc; TL_LOCK(sc); /* Disable interrupts */ ints = CSR_READ_2(sc, TL_HOST_INT); CSR_WRITE_2(sc, TL_HOST_INT, ints); type = (ints << 16) & 0xFFFF0000; ivec = (ints & TL_VEC_MASK) >> 5; ints = (ints & TL_INT_MASK) >> 2; ifp = sc->tl_ifp; switch(ints) { case (TL_INTR_INVALID): #ifdef DIAGNOSTIC if_printf(ifp, "got an invalid interrupt!\n"); #endif /* Re-enable interrupts but don't ack this one. */ CMD_PUT(sc, type); r = 0; break; case (TL_INTR_TXEOF): r = tl_intvec_txeof((void *)sc, type); break; case (TL_INTR_TXEOC): r = tl_intvec_txeoc((void *)sc, type); break; case (TL_INTR_STATOFLOW): tl_stats_update(sc); r = 1; break; case (TL_INTR_RXEOF): r = tl_intvec_rxeof((void *)sc, type); break; case (TL_INTR_DUMMY): if_printf(ifp, "got a dummy interrupt\n"); r = 1; break; case (TL_INTR_ADCHK): if (ivec) r = tl_intvec_adchk((void *)sc, type); else r = tl_intvec_netsts((void *)sc, type); break; case (TL_INTR_RXEOC): r = tl_intvec_rxeoc((void *)sc, type); break; default: if_printf(ifp, "bogus interrupt type\n"); break; } /* Re-enable interrupts */ if (r) { CMD_PUT(sc, TL_CMD_ACK | r | type); } if (ifp->if_snd.ifq_head != NULL) tl_start_locked(ifp); TL_UNLOCK(sc); return; } static void tl_stats_update(xsc) void *xsc; { struct tl_softc *sc; struct ifnet *ifp; struct tl_stats tl_stats; struct mii_data *mii; u_int32_t *p; bzero((char *)&tl_stats, sizeof(struct tl_stats)); sc = xsc; TL_LOCK_ASSERT(sc); ifp = sc->tl_ifp; p = (u_int32_t *)&tl_stats; CSR_WRITE_2(sc, TL_DIO_ADDR, TL_TXGOODFRAMES|TL_DIO_ADDR_INC); *p++ = CSR_READ_4(sc, TL_DIO_DATA); *p++ = CSR_READ_4(sc, TL_DIO_DATA); *p++ = CSR_READ_4(sc, TL_DIO_DATA); *p++ = CSR_READ_4(sc, TL_DIO_DATA); *p++ = CSR_READ_4(sc, TL_DIO_DATA); ifp->if_opackets += tl_tx_goodframes(tl_stats); ifp->if_collisions += tl_stats.tl_tx_single_collision + tl_stats.tl_tx_multi_collision; ifp->if_ipackets += tl_rx_goodframes(tl_stats); ifp->if_ierrors += tl_stats.tl_crc_errors + tl_stats.tl_code_errors + tl_rx_overrun(tl_stats); ifp->if_oerrors += tl_tx_underrun(tl_stats); if (tl_tx_underrun(tl_stats)) { u_int8_t tx_thresh; tx_thresh = tl_dio_read8(sc, TL_ACOMMIT) & TL_AC_TXTHRESH; if (tx_thresh != TL_AC_TXTHRESH_WHOLEPKT) { tx_thresh >>= 4; tx_thresh++; if_printf(ifp, "tx underrun -- increasing " "tx threshold to %d bytes\n", (64 * (tx_thresh * 4))); tl_dio_clrbit(sc, TL_ACOMMIT, TL_AC_TXTHRESH); tl_dio_setbit(sc, TL_ACOMMIT, tx_thresh << 4); } } callout_reset(&sc->tl_stat_callout, hz, tl_stats_update, sc); if (!sc->tl_bitrate) { mii = device_get_softc(sc->tl_miibus); mii_tick(mii); } return; } /* * Encapsulate an mbuf chain in a list by coupling the mbuf data * pointers to the fragment pointers. */ static int tl_encap(sc, c, m_head) struct tl_softc *sc; struct tl_chain *c; struct mbuf *m_head; { int frag = 0; struct tl_frag *f = NULL; int total_len; struct mbuf *m; struct ifnet *ifp = sc->tl_ifp; /* * Start packing the mbufs in this chain into * the fragment pointers. Stop when we run out * of fragments or hit the end of the mbuf chain. */ m = m_head; total_len = 0; for (m = m_head, frag = 0; m != NULL; m = m->m_next) { if (m->m_len != 0) { if (frag == TL_MAXFRAGS) break; total_len+= m->m_len; c->tl_ptr->tl_frag[frag].tlist_dadr = vtophys(mtod(m, vm_offset_t)); c->tl_ptr->tl_frag[frag].tlist_dcnt = m->m_len; frag++; } } /* * Handle special cases. * Special case #1: we used up all 10 fragments, but * we have more mbufs left in the chain. Copy the * data into an mbuf cluster. Note that we don't * bother clearing the values in the other fragment * pointers/counters; it wouldn't gain us anything, * and would waste cycles. */ if (m != NULL) { struct mbuf *m_new = NULL; MGETHDR(m_new, M_DONTWAIT, MT_DATA); if (m_new == NULL) { if_printf(ifp, "no memory for tx list\n"); return(1); } if (m_head->m_pkthdr.len > MHLEN) { MCLGET(m_new, M_DONTWAIT); if (!(m_new->m_flags & M_EXT)) { m_freem(m_new); if_printf(ifp, "no memory for tx list\n"); return(1); } } m_copydata(m_head, 0, m_head->m_pkthdr.len, mtod(m_new, caddr_t)); m_new->m_pkthdr.len = m_new->m_len = m_head->m_pkthdr.len; m_freem(m_head); m_head = m_new; f = &c->tl_ptr->tl_frag[0]; f->tlist_dadr = vtophys(mtod(m_new, caddr_t)); f->tlist_dcnt = total_len = m_new->m_len; frag = 1; } /* * Special case #2: the frame is smaller than the minimum * frame size. We have to pad it to make the chip happy. */ if (total_len < TL_MIN_FRAMELEN) { if (frag == TL_MAXFRAGS) if_printf(ifp, "all frags filled but frame still to small!\n"); f = &c->tl_ptr->tl_frag[frag]; f->tlist_dcnt = TL_MIN_FRAMELEN - total_len; f->tlist_dadr = vtophys(&sc->tl_ldata->tl_pad); total_len += f->tlist_dcnt; frag++; } c->tl_mbuf = m_head; c->tl_ptr->tl_frag[frag - 1].tlist_dcnt |= TL_LAST_FRAG; c->tl_ptr->tlist_frsize = total_len; c->tl_ptr->tlist_cstat = TL_CSTAT_READY; c->tl_ptr->tlist_fptr = 0; return(0); } /* * Main transmit routine. To avoid having to do mbuf copies, we put pointers * to the mbuf data regions directly in the transmit lists. We also save a * copy of the pointers since the transmit list fragment pointers are * physical addresses. */ static void tl_start(ifp) struct ifnet *ifp; { struct tl_softc *sc; sc = ifp->if_softc; TL_LOCK(sc); tl_start_locked(ifp); TL_UNLOCK(sc); } static void tl_start_locked(ifp) struct ifnet *ifp; { struct tl_softc *sc; struct mbuf *m_head = NULL; u_int32_t cmd; struct tl_chain *prev = NULL, *cur_tx = NULL, *start_tx; sc = ifp->if_softc; TL_LOCK_ASSERT(sc); /* * Check for an available queue slot. If there are none, * punt. */ if (sc->tl_cdata.tl_tx_free == NULL) { ifp->if_drv_flags |= IFF_DRV_OACTIVE; return; } start_tx = sc->tl_cdata.tl_tx_free; while(sc->tl_cdata.tl_tx_free != NULL) { IF_DEQUEUE(&ifp->if_snd, m_head); if (m_head == NULL) break; /* Pick a chain member off the free list. */ cur_tx = sc->tl_cdata.tl_tx_free; sc->tl_cdata.tl_tx_free = cur_tx->tl_next; cur_tx->tl_next = NULL; /* Pack the data into the list. */ tl_encap(sc, cur_tx, m_head); /* Chain it together */ if (prev != NULL) { prev->tl_next = cur_tx; prev->tl_ptr->tlist_fptr = vtophys(cur_tx->tl_ptr); } prev = cur_tx; /* * If there's a BPF listener, bounce a copy of this frame * to him. */ BPF_MTAP(ifp, cur_tx->tl_mbuf); } /* * If there are no packets queued, bail. */ if (cur_tx == NULL) return; /* * That's all we can stands, we can't stands no more. * If there are no other transfers pending, then issue the * TX GO command to the adapter to start things moving. * Otherwise, just leave the data in the queue and let * the EOF/EOC interrupt handler send. */ if (sc->tl_cdata.tl_tx_head == NULL) { sc->tl_cdata.tl_tx_head = start_tx; sc->tl_cdata.tl_tx_tail = cur_tx; if (sc->tl_txeoc) { sc->tl_txeoc = 0; CSR_WRITE_4(sc, TL_CH_PARM, vtophys(start_tx->tl_ptr)); cmd = CSR_READ_4(sc, TL_HOSTCMD); cmd &= ~TL_CMD_RT; cmd |= TL_CMD_GO|TL_CMD_INTSON; CMD_PUT(sc, cmd); } } else { sc->tl_cdata.tl_tx_tail->tl_next = start_tx; sc->tl_cdata.tl_tx_tail = cur_tx; } /* * Set a timeout in case the chip goes out to lunch. */ ifp->if_timer = 5; return; } static void tl_init(xsc) void *xsc; { struct tl_softc *sc = xsc; TL_LOCK(sc); tl_init_locked(sc); TL_UNLOCK(sc); } static void tl_init_locked(sc) struct tl_softc *sc; { struct ifnet *ifp = sc->tl_ifp; struct mii_data *mii; TL_LOCK_ASSERT(sc); ifp = sc->tl_ifp; /* * Cancel pending I/O. */ tl_stop(sc); /* Initialize TX FIFO threshold */ tl_dio_clrbit(sc, TL_ACOMMIT, TL_AC_TXTHRESH); tl_dio_setbit(sc, TL_ACOMMIT, TL_AC_TXTHRESH_16LONG); /* Set PCI burst size */ tl_dio_write8(sc, TL_BSIZEREG, TL_RXBURST_16LONG|TL_TXBURST_16LONG); /* * Set 'capture all frames' bit for promiscuous mode. */ if (ifp->if_flags & IFF_PROMISC) tl_dio_setbit(sc, TL_NETCMD, TL_CMD_CAF); else tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_CAF); /* * Set capture broadcast bit to capture broadcast frames. */ if (ifp->if_flags & IFF_BROADCAST) tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_NOBRX); else tl_dio_setbit(sc, TL_NETCMD, TL_CMD_NOBRX); tl_dio_write16(sc, TL_MAXRX, MCLBYTES); /* Init our MAC address */ tl_setfilt(sc, IF_LLADDR(sc->tl_ifp), 0); /* Init multicast filter, if needed. */ tl_setmulti(sc); /* Init circular RX list. */ if (tl_list_rx_init(sc) == ENOBUFS) { if_printf(ifp, "initialization failed: no memory for rx buffers\n"); tl_stop(sc); return; } /* Init TX pointers. */ tl_list_tx_init(sc); /* Enable PCI interrupts. */ CMD_SET(sc, TL_CMD_INTSON); /* Load the address of the rx list */ CMD_SET(sc, TL_CMD_RT); CSR_WRITE_4(sc, TL_CH_PARM, vtophys(&sc->tl_ldata->tl_rx_list[0])); if (!sc->tl_bitrate) { if (sc->tl_miibus != NULL) { mii = device_get_softc(sc->tl_miibus); mii_mediachg(mii); } } else { tl_ifmedia_upd(ifp); } /* Send the RX go command */ CMD_SET(sc, TL_CMD_GO|TL_CMD_NES|TL_CMD_RT); ifp->if_drv_flags |= IFF_DRV_RUNNING; ifp->if_drv_flags &= ~IFF_DRV_OACTIVE; /* Start the stats update counter */ callout_reset(&sc->tl_stat_callout, hz, tl_stats_update, sc); return; } /* * Set media options. */ static int tl_ifmedia_upd(ifp) struct ifnet *ifp; { struct tl_softc *sc; struct mii_data *mii = NULL; sc = ifp->if_softc; TL_LOCK(sc); if (sc->tl_bitrate) tl_setmode(sc, sc->ifmedia.ifm_media); else { mii = device_get_softc(sc->tl_miibus); mii_mediachg(mii); } TL_UNLOCK(sc); return(0); } /* * Report current media status. */ static void tl_ifmedia_sts(ifp, ifmr) struct ifnet *ifp; struct ifmediareq *ifmr; { struct tl_softc *sc; struct mii_data *mii; sc = ifp->if_softc; TL_LOCK(sc); ifmr->ifm_active = IFM_ETHER; if (sc->tl_bitrate) { if (tl_dio_read8(sc, TL_ACOMMIT) & TL_AC_MTXD1) ifmr->ifm_active = IFM_ETHER|IFM_10_5; else ifmr->ifm_active = IFM_ETHER|IFM_10_T; if (tl_dio_read8(sc, TL_ACOMMIT) & TL_AC_MTXD3) ifmr->ifm_active |= IFM_HDX; else ifmr->ifm_active |= IFM_FDX; return; } else { mii = device_get_softc(sc->tl_miibus); mii_pollstat(mii); ifmr->ifm_active = mii->mii_media_active; ifmr->ifm_status = mii->mii_media_status; } TL_UNLOCK(sc); return; } static int tl_ioctl(ifp, command, data) struct ifnet *ifp; u_long command; caddr_t data; { struct tl_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *) data; int error = 0; switch(command) { case SIOCSIFFLAGS: TL_LOCK(sc); if (ifp->if_flags & IFF_UP) { if (ifp->if_drv_flags & IFF_DRV_RUNNING && ifp->if_flags & IFF_PROMISC && !(sc->tl_if_flags & IFF_PROMISC)) { tl_dio_setbit(sc, TL_NETCMD, TL_CMD_CAF); tl_setmulti(sc); } else if (ifp->if_drv_flags & IFF_DRV_RUNNING && !(ifp->if_flags & IFF_PROMISC) && sc->tl_if_flags & IFF_PROMISC) { tl_dio_clrbit(sc, TL_NETCMD, TL_CMD_CAF); tl_setmulti(sc); } else tl_init_locked(sc); } else { if (ifp->if_drv_flags & IFF_DRV_RUNNING) { tl_stop(sc); } } sc->tl_if_flags = ifp->if_flags; TL_UNLOCK(sc); error = 0; break; case SIOCADDMULTI: case SIOCDELMULTI: TL_LOCK(sc); tl_setmulti(sc); TL_UNLOCK(sc); error = 0; break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: if (sc->tl_bitrate) error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command); else { struct mii_data *mii; mii = device_get_softc(sc->tl_miibus); error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, command); } break; default: error = ether_ioctl(ifp, command, data); break; } return(error); } static void tl_watchdog(ifp) struct ifnet *ifp; { struct tl_softc *sc; sc = ifp->if_softc; if_printf(ifp, "device timeout\n"); TL_LOCK(sc); ifp->if_oerrors++; tl_softreset(sc, 1); tl_init_locked(sc); TL_UNLOCK(sc); return; } /* * Stop the adapter and free any mbufs allocated to the * RX and TX lists. */ static void tl_stop(sc) struct tl_softc *sc; { register int i; struct ifnet *ifp; TL_LOCK_ASSERT(sc); ifp = sc->tl_ifp; /* Stop the stats updater. */ callout_stop(&sc->tl_stat_callout); /* Stop the transmitter */ CMD_CLR(sc, TL_CMD_RT); CMD_SET(sc, TL_CMD_STOP); CSR_WRITE_4(sc, TL_CH_PARM, 0); /* Stop the receiver */ CMD_SET(sc, TL_CMD_RT); CMD_SET(sc, TL_CMD_STOP); CSR_WRITE_4(sc, TL_CH_PARM, 0); /* * Disable host interrupts. */ CMD_SET(sc, TL_CMD_INTSOFF); /* * Clear list pointer. */ CSR_WRITE_4(sc, TL_CH_PARM, 0); /* * Free the RX lists. */ for (i = 0; i < TL_RX_LIST_CNT; i++) { if (sc->tl_cdata.tl_rx_chain[i].tl_mbuf != NULL) { m_freem(sc->tl_cdata.tl_rx_chain[i].tl_mbuf); sc->tl_cdata.tl_rx_chain[i].tl_mbuf = NULL; } } bzero((char *)&sc->tl_ldata->tl_rx_list, sizeof(sc->tl_ldata->tl_rx_list)); /* * Free the TX list buffers. */ for (i = 0; i < TL_TX_LIST_CNT; i++) { if (sc->tl_cdata.tl_tx_chain[i].tl_mbuf != NULL) { m_freem(sc->tl_cdata.tl_tx_chain[i].tl_mbuf); sc->tl_cdata.tl_tx_chain[i].tl_mbuf = NULL; } } bzero((char *)&sc->tl_ldata->tl_tx_list, sizeof(sc->tl_ldata->tl_tx_list)); ifp->if_drv_flags &= ~(IFF_DRV_RUNNING | IFF_DRV_OACTIVE); return; } /* * Stop all chip I/O so that the kernel's probe routines don't * get confused by errant DMAs when rebooting. */ static void tl_shutdown(dev) device_t dev; { struct tl_softc *sc; sc = device_get_softc(dev); TL_LOCK(sc); tl_stop(sc); TL_UNLOCK(sc); return; }