/* * 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. * * $Id: if_tl.c,v 1.6 1998/05/26 23:42:24 wpaul Exp $ */ /* * 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 three 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) * * 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). 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. A serial EEPROM is also * attached to the ThunderLAN chip to provide power-up default register * settings and for storing the adapter's stattion address. Although not * supported by this driver, the ThunderLAN chip can also be connected * to token ring PHYs. * * It is important to note that while it is possible to have multiple * PHYs attached to the ThunderLAN's MII, only one PHY may be active at * any time. (This makes me wonder exactly how the dual port Compaq * adapter is supposed to work.) This driver attempts to compensate for * this in the following way: * * When the ThunderLAN chip is probed, the probe routine attempts to * locate all attached PHYs by checking all 32 possible PHY addresses * (0x00 to 0x1F). Each PHY is attached as a separate logical interface. * The driver allows any one interface to be brought up at any given * time: if an attempt is made to bring up a second PHY while another * PHY is already enabled, the driver will return an error. * * The ThunderLAN has a set of registers which can be used to issue * command, 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 "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #ifdef INET #include #include #include #include #include #endif #ifdef IPX #include #include #endif #ifdef NS #include #include #endif #if NBPFILTER > 0 #include #include #endif #include /* for vtophys */ #include /* for vtophys */ #include /* for vtophys */ #include /* for DELAY */ #include #include #include #ifndef lint static char rcsid[] = "$Id: if_tl.c,v 1.6 1998/05/26 23:42:24 wpaul Exp $"; #endif /* * 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_DESKPRO_4000_5233MMX, "Compaq Deskpro 4000 5233MMX" }, { 0, 0, NULL } }; /* * Various supported PHY vendors/types and their names. Note that * this driver will work with pretty much any MII-compliant PHY, * so failure to positively identify the chip is not a fatal error. */ static struct tl_type tl_phys[] = { { TI_PHY_VENDORID, TI_PHY_10BT, "" }, { TI_PHY_VENDORID, TI_PHY_100VGPMI, "" }, { NS_PHY_VENDORID, NS_PHY_83840A, ""}, { LEVEL1_PHY_VENDORID, LEVEL1_PHY_LXT970, "" }, { INTEL_PHY_VENDORID, INTEL_PHY_82555, "" }, { SEEQ_PHY_VENDORID, SEEQ_PHY_80220, "" }, { 0, 0, "" } }; static struct tl_iflist *tl_iflist = NULL; static unsigned long tl_count; static char *tl_probe __P((pcici_t, pcidi_t)); static void tl_attach_ctlr __P((pcici_t, int)); static int tl_attach_phy __P((struct tl_csr *, int, char *, int, struct tl_iflist *)); static int tl_intvec_invalid __P((void *, u_int32_t)); static int tl_intvec_dummy __P((void *, u_int32_t)); static int tl_intvec_rxeoc __P((void *, u_int32_t)); static int tl_intvec_txeoc __P((void *, u_int32_t)); static int tl_intvec_txeof __P((void *, u_int32_t)); static int tl_intvec_rxeof __P((void *, u_int32_t)); static int tl_intvec_adchk __P((void *, u_int32_t)); static int tl_intvec_netsts __P((void *, u_int32_t)); static int tl_intvec_statoflow __P((void *, u_int32_t)); static int tl_newbuf __P((struct tl_softc *, struct tl_chain *)); static void tl_stats_update __P((void *)); static int tl_encap __P((struct tl_softc *, struct tl_chain *, struct mbuf *)); static void tl_intr __P((void *)); static void tl_start __P((struct ifnet *)); static int tl_ioctl __P((struct ifnet *, int, caddr_t)); static void tl_init __P((void *)); static void tl_stop __P((struct tl_softc *)); static void tl_watchdog __P((struct ifnet *)); static void tl_shutdown __P((int, void *)); static int tl_ifmedia_upd __P((struct ifnet *)); static void tl_ifmedia_sts __P((struct ifnet *, struct ifmediareq *)); static u_int8_t tl_eeprom_putbyte __P((struct tl_csr *, u_int8_t)); static u_int8_t tl_eeprom_getbyte __P((struct tl_csr *, u_int8_t , u_int8_t * )); static int tl_read_eeprom __P((struct tl_csr *, caddr_t, int, int)); static void tl_mii_sync __P((struct tl_csr *)); static void tl_mii_send __P((struct tl_csr *, u_int32_t, int)); static int tl_mii_readreg __P((struct tl_csr *, struct tl_mii_frame *)); static int tl_mii_writereg __P((struct tl_csr *, struct tl_mii_frame *)); static u_int16_t tl_phy_readreg __P((struct tl_softc *, int)); static void tl_phy_writereg __P((struct tl_softc *, u_int16_t, u_int16_t)); static void tl_autoneg __P((struct tl_softc *, int, int)); static void tl_setmode __P((struct tl_softc *, int)); static int tl_calchash __P((unsigned char *)); static void tl_setmulti __P((struct tl_softc *)); static void tl_softreset __P((struct tl_csr *, int)); static int tl_list_rx_init __P((struct tl_softc *)); static int tl_list_tx_init __P((struct tl_softc *)); /* * ThunderLAN adapters typically have a serial EEPROM containing * configuration information. The main reason we're interested in * it is because it also contains the adapters's station address. * * Access to the EEPROM is a bit goofy since it is a serial device: * you have to do reads and writes one bit at a time. The state of * the DATA bit can only change while the CLOCK line is held low. * Transactions work basically like this: * * 1) Send the EEPROM_START sequence to prepare the EEPROM for * accepting commands. This pulls the clock high, sets * the data bit to 0, enables transmission to the EEPROM, * pulls the data bit up to 1, then pulls the clock low. * The idea is to do a 0 to 1 transition of the data bit * while the clock pin is held high. * * 2) To write a bit to the EEPROM, set the TXENABLE bit, then * set the EDATA bit to send a 1 or clear it to send a 0. * Finally, set and then clear ECLOK. Strobing the clock * transmits the bit. After 8 bits have been written, the * EEPROM should respond with an ACK, which should be read. * * 3) To read a bit from the EEPROM, clear the TXENABLE bit, * then set ECLOK. The bit can then be read by reading EDATA. * ECLOCK should then be cleared again. This can be repeated * 8 times to read a whole byte, after which the * * 4) We need to send the address byte to the EEPROM. For this * we have to send the write control byte to the EEPROM to * tell it to accept data. The byte is 0xA0. The EEPROM should * ack this. The address byte can be send after that. * * 5) Now we have to tell the EEPROM to send us data. For that we * have to transmit the read control byte, which is 0xA1. This * byte should also be acked. We can then read the data bits * from the EEPROM. * * 6) When we're all finished, send the EEPROM_STOP sequence. * * Note that we use the ThunderLAN's NetSio register to access the * EEPROM, however there is an alternate method. There is a PCI NVRAM * register at PCI offset 0xB4 which can also be used with minor changes. * The difference is that access to PCI registers via pci_conf_read() * and pci_conf_write() is done using programmed I/O, which we want to * avoid. */ /* * Note that EEPROM_START leaves transmission enabled. */ #define EEPROM_START \ DIO_SEL(TL_NETSIO); \ DIO_BYTE1_SET(TL_SIO_ECLOK); /* Pull clock pin high */ \ DIO_BYTE1_SET(TL_SIO_EDATA); /* Set DATA bit to 1 */ \ DIO_BYTE1_SET(TL_SIO_ETXEN); /* Enable xmit to write bit */ \ DIO_BYTE1_CLR(TL_SIO_EDATA); /* Pull DATA bit to 0 again */ \ DIO_BYTE1_CLR(TL_SIO_ECLOK); /* Pull clock low again */ /* * EEPROM_STOP ends access to the EEPROM and clears the ETXEN bit so * that no further data can be written to the EEPROM I/O pin. */ #define EEPROM_STOP \ DIO_SEL(TL_NETSIO); \ DIO_BYTE1_CLR(TL_SIO_ETXEN); /* Disable xmit */ \ DIO_BYTE1_CLR(TL_SIO_EDATA); /* Pull DATA to 0 */ \ DIO_BYTE1_SET(TL_SIO_ECLOK); /* Pull clock high */ \ DIO_BYTE1_SET(TL_SIO_ETXEN); /* Enable xmit */ \ DIO_BYTE1_SET(TL_SIO_EDATA); /* Toggle DATA to 1 */ \ DIO_BYTE1_CLR(TL_SIO_ETXEN); /* Disable xmit. */ \ DIO_BYTE1_CLR(TL_SIO_ECLOK); /* Pull clock low again */ /* * Send an instruction or address to the EEPROM, check for ACK. */ static u_int8_t tl_eeprom_putbyte(csr, byte) struct tl_csr *csr; u_int8_t byte; { register int i, ack = 0; /* * Make sure we're in TX mode. */ DIO_SEL(TL_NETSIO); DIO_BYTE1_SET(TL_SIO_ETXEN); /* * Feed in each bit and stobe the clock. */ for (i = 0x80; i; i >>= 1) { DIO_SEL(TL_NETSIO); if (byte & i) { DIO_BYTE1_SET(TL_SIO_EDATA); } else { DIO_BYTE1_CLR(TL_SIO_EDATA); } DIO_BYTE1_SET(TL_SIO_ECLOK); DIO_BYTE1_CLR(TL_SIO_ECLOK); } /* * Turn off TX mode. */ DIO_BYTE1_CLR(TL_SIO_ETXEN); /* * Check for ack. */ DIO_BYTE1_SET(TL_SIO_ECLOK); ack = DIO_BYTE1_GET(TL_SIO_EDATA); DIO_BYTE1_CLR(TL_SIO_ECLOK); return(ack); } /* * Read a byte of data stored in the EEPROM at address 'addr.' */ static u_int8_t tl_eeprom_getbyte(csr, addr, dest) struct tl_csr *csr; u_int8_t addr; u_int8_t *dest; { register int i; u_int8_t byte = 0; EEPROM_START; /* * Send write control code to EEPROM. */ if (tl_eeprom_putbyte(csr, EEPROM_CTL_WRITE)) return(1); /* * Send address of byte we want to read. */ if (tl_eeprom_putbyte(csr, addr)) return(1); EEPROM_STOP; EEPROM_START; /* * Send read control code to EEPROM. */ if (tl_eeprom_putbyte(csr, EEPROM_CTL_READ)) return(1); /* * Start reading bits from EEPROM. */ DIO_SEL(TL_NETSIO); DIO_BYTE1_CLR(TL_SIO_ETXEN); for (i = 0x80; i; i >>= 1) { DIO_SEL(TL_NETSIO); DIO_BYTE1_SET(TL_SIO_ECLOK); if (DIO_BYTE1_GET(TL_SIO_EDATA)) byte |= i; DIO_BYTE1_CLR(TL_SIO_ECLOK); } EEPROM_STOP; /* * No ACK generated for read, so just return byte. */ *dest = byte; return(0); } static void tl_mii_sync(csr) struct tl_csr *csr; { register int i; DIO_SEL(TL_NETSIO); DIO_BYTE1_CLR(TL_SIO_MTXEN); for (i = 0; i < 32; i++) { DIO_BYTE1_SET(TL_SIO_MCLK); DIO_BYTE1_CLR(TL_SIO_MCLK); } return; } static void tl_mii_send(csr, bits, cnt) struct tl_csr *csr; u_int32_t bits; int cnt; { int i; for (i = (0x1 << (cnt - 1)); i; i >>= 1) { DIO_BYTE1_CLR(TL_SIO_MCLK); if (bits & i) { DIO_BYTE1_SET(TL_SIO_MDATA); } else { DIO_BYTE1_CLR(TL_SIO_MDATA); } DIO_BYTE1_SET(TL_SIO_MCLK); } } static int tl_mii_readreg(csr, frame) struct tl_csr *csr; struct tl_mii_frame *frame; { int i, ack, s; int minten = 0; s = splimp(); tl_mii_sync(csr); /* * 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; /* * Select the NETSIO register. We will be using it * to communicate indirectly with the MII. */ DIO_SEL(TL_NETSIO); /* * Turn off MII interrupt by forcing MINTEN low. */ minten = DIO_BYTE1_GET(TL_SIO_MINTEN); if (minten) { DIO_BYTE1_CLR(TL_SIO_MINTEN); } /* * Turn on data xmit. */ DIO_BYTE1_SET(TL_SIO_MTXEN); /* * Send command/address info. */ tl_mii_send(csr, frame->mii_stdelim, 2); tl_mii_send(csr, frame->mii_opcode, 2); tl_mii_send(csr, frame->mii_phyaddr, 5); tl_mii_send(csr, frame->mii_regaddr, 5); /* * Turn off xmit. */ DIO_BYTE1_CLR(TL_SIO_MTXEN); /* Idle bit */ DIO_BYTE1_CLR(TL_SIO_MCLK); DIO_BYTE1_SET(TL_SIO_MCLK); /* Check for ack */ DIO_BYTE1_CLR(TL_SIO_MCLK); ack = DIO_BYTE1_GET(TL_SIO_MDATA); /* Complete the cycle */ DIO_BYTE1_SET(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++) { DIO_BYTE1_CLR(TL_SIO_MCLK); DIO_BYTE1_SET(TL_SIO_MCLK); } goto fail; } for (i = 0x8000; i; i >>= 1) { DIO_BYTE1_CLR(TL_SIO_MCLK); if (!ack) { if (DIO_BYTE1_GET(TL_SIO_MDATA)) frame->mii_data |= i; } DIO_BYTE1_SET(TL_SIO_MCLK); } fail: DIO_BYTE1_CLR(TL_SIO_MCLK); DIO_BYTE1_SET(TL_SIO_MCLK); /* Reenable interrupts */ if (minten) { DIO_BYTE1_SET(TL_SIO_MINTEN); } splx(s); if (ack) return(1); return(0); } static int tl_mii_writereg(csr, frame) struct tl_csr *csr; struct tl_mii_frame *frame; { int s; int minten; tl_mii_sync(csr); s = splimp(); /* * Set up frame for TX. */ frame->mii_stdelim = TL_MII_STARTDELIM; frame->mii_opcode = TL_MII_WRITEOP; frame->mii_turnaround = TL_MII_TURNAROUND; /* * Select the NETSIO register. We will be using it * to communicate indirectly with the MII. */ DIO_SEL(TL_NETSIO); /* * Turn off MII interrupt by forcing MINTEN low. */ minten = DIO_BYTE1_GET(TL_SIO_MINTEN); if (minten) { DIO_BYTE1_CLR(TL_SIO_MINTEN); } /* * Turn on data output. */ DIO_BYTE1_SET(TL_SIO_MTXEN); tl_mii_send(csr, frame->mii_stdelim, 2); tl_mii_send(csr, frame->mii_opcode, 2); tl_mii_send(csr, frame->mii_phyaddr, 5); tl_mii_send(csr, frame->mii_regaddr, 5); tl_mii_send(csr, frame->mii_turnaround, 2); tl_mii_send(csr, frame->mii_data, 16); DIO_BYTE1_SET(TL_SIO_MCLK); DIO_BYTE1_CLR(TL_SIO_MCLK); /* * Turn off xmit. */ DIO_BYTE1_CLR(TL_SIO_MTXEN); /* Reenable interrupts */ if (minten) DIO_BYTE1_SET(TL_SIO_MINTEN); splx(s); return(0); } static u_int16_t tl_phy_readreg(sc, reg) struct tl_softc *sc; int reg; { struct tl_mii_frame frame; struct tl_csr *csr; bzero((char *)&frame, sizeof(frame)); csr = sc->csr; frame.mii_phyaddr = sc->tl_phy_addr; frame.mii_regaddr = reg; tl_mii_readreg(sc->csr, &frame); /* Reenable MII interrupts, just in case. */ DIO_SEL(TL_NETSIO); DIO_BYTE1_SET(TL_SIO_MINTEN); return(frame.mii_data); } static void tl_phy_writereg(sc, reg, data) struct tl_softc *sc; u_int16_t reg; u_int16_t data; { struct tl_mii_frame frame; struct tl_csr *csr; bzero((char *)&frame, sizeof(frame)); csr = sc->csr; frame.mii_phyaddr = sc->tl_phy_addr; frame.mii_regaddr = reg; frame.mii_data = data; tl_mii_writereg(sc->csr, &frame); /* Reenable MII interrupts, just in case. */ DIO_SEL(TL_NETSIO); DIO_BYTE1_SET(TL_SIO_MINTEN); return; } /* * Read a sequence of bytes from the EEPROM. */ static int tl_read_eeprom(csr, dest, off, cnt) struct tl_csr *csr; 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(csr, off + i, &byte); if (err) break; *(dest + i) = byte; } return(err ? 1 : 0); } /* * Initiate autonegotiation with a link partner. * * Note that the Texas Instruments ThunderLAN programmer's guide * fails to mention one very important point about autonegotiation. * Autonegotiation is done largely by the PHY, independent of the * ThunderLAN chip itself: the PHY sets the flags in the BMCR * register to indicate what modes were selected and if link status * is good. In fact, the PHY does pretty much all of the work itself, * except for one small detail. * * The PHY may negotiate a full-duplex of half-duplex link, and set * the PHY_BMCR_DUPLEX bit accordingly, but the ThunderLAN's 'NetCommand' * register _also_ has a half-duplex/full-duplex bit, and you MUST ALSO * SET THIS BIT MANUALLY TO CORRESPOND TO THE MODE SELECTED FOR THE PHY! * In other words, both the ThunderLAN chip and the PHY have to be * programmed for full-duplex mode in order for full-duplex to actually * work. So in order for autonegotiation to really work right, we have * to wait for the link to come up, check the BMCR register, then set * the ThunderLAN for full or half-duplex as needed. * * I struggled for two days to figure this out, so I'm making a point * of drawing attention to this fact. I think it's very strange that * the ThunderLAN doesn't automagically track the duplex state of the * PHY, but there you have it. * * Also when, using a National Semiconductor DP83840A PHY, we have to * allow a full three seconds for autonegotiation to complete. So what * we do is flip the autonegotiation restart bit, then set a timeout * to wake us up in three seconds to check the link state. */ static void tl_autoneg(sc, flag, verbose) struct tl_softc *sc; int flag; int verbose; { u_int16_t phy_sts = 0, media = 0; struct ifnet *ifp; struct ifmedia *ifm; struct tl_csr *csr; ifm = &sc->ifmedia; ifp = &sc->arpcom.ac_if; csr = sc->csr; /* * First, see if autoneg is supported. If not, there's * no point in continuing. */ phy_sts = tl_phy_readreg(sc, PHY_BMSR); if (!(phy_sts & PHY_BMSR_CANAUTONEG)) { if (verbose) printf("tl%d: autonegotiation not supported\n", sc->tl_unit); return; } switch (flag) { case TL_FLAG_FORCEDELAY: /* * XXX Never use this option anywhere but in the probe * routine: making the kernel stop dead in its tracks * for three whole seconds after we've gone multi-user * is really bad manners. */ phy_sts = tl_phy_readreg(sc, PHY_BMCR); phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; tl_phy_writereg(sc, PHY_BMCR, phy_sts); DELAY(3000000); break; case TL_FLAG_SCHEDDELAY: phy_sts = tl_phy_readreg(sc, PHY_BMCR); phy_sts |= PHY_BMCR_AUTONEGENBL|PHY_BMCR_AUTONEGRSTR; tl_phy_writereg(sc, PHY_BMCR, phy_sts); ifp->if_timer = 3; sc->tl_autoneg = 1; return; case TL_FLAG_DELAYTIMEO: ifp->if_timer = 0; sc->tl_autoneg = 0; break; default: printf("tl%d: invalid autoneg flag: %d\n", flag, sc->tl_unit); return; } /* * Read the BMSR register twice: the LINKSTAT bit is a * latching bit. */ tl_phy_readreg(sc, PHY_BMSR); phy_sts = tl_phy_readreg(sc, PHY_BMSR); if (phy_sts & PHY_BMSR_AUTONEGCOMP) { if (verbose) printf("tl%d: autoneg complete, ", sc->tl_unit); phy_sts = tl_phy_readreg(sc, PHY_BMSR); } else { if (verbose) printf("tl%d: autoneg not complete, ", sc->tl_unit); } /* Link is good. Report modes and set duplex mode. */ if (phy_sts & PHY_BMSR_LINKSTAT) { if (verbose) printf("link status good "); media = tl_phy_readreg(sc, PHY_BMCR); /* Set the DUPLEX bit in the NetCmd register accordingly. */ if (media & PHY_BMCR_DUPLEX) { if (verbose) printf("(full-duplex, "); ifm->ifm_media |= IFM_FDX; ifm->ifm_media &= ~IFM_HDX; DIO_SEL(TL_NETCMD); DIO_BYTE0_SET(TL_CMD_DUPLEX); } else { if (verbose) printf("(half-duplex, "); ifm->ifm_media &= ~IFM_FDX; ifm->ifm_media |= IFM_HDX; DIO_SEL(TL_NETCMD); DIO_BYTE0_CLR(TL_CMD_DUPLEX); } if (media & PHY_BMCR_SPEEDSEL) { if (verbose) printf("100Mb/s)\n"); ifm->ifm_media |= IFM_100_TX; ifm->ifm_media &= ~IFM_10_T; } else { if (verbose) printf("10Mb/s)\n"); ifm->ifm_media &= ~IFM_100_TX; ifm->ifm_media |= IFM_10_T; } /* Turn off autoneg */ media &= ~PHY_BMCR_AUTONEGENBL; tl_phy_writereg(sc, PHY_BMCR, media); } else { if (verbose) printf("no carrier\n"); } return; } /* * Set speed and duplex mode. Also program autoneg advertisements * accordingly. */ static void tl_setmode(sc, media) struct tl_softc *sc; int media; { u_int16_t bmcr, anar, ctl; struct tl_csr *csr; csr = sc->csr; bmcr = tl_phy_readreg(sc, PHY_BMCR); anar = tl_phy_readreg(sc, PHY_ANAR); ctl = tl_phy_readreg(sc, TL_PHY_CTL); DIO_SEL(TL_NETCMD); bmcr &= ~(PHY_BMCR_SPEEDSEL|PHY_BMCR_DUPLEX|PHY_BMCR_AUTONEGENBL| PHY_BMCR_LOOPBK); anar &= ~(PHY_ANAR_100BT4|PHY_ANAR_100BTXFULL|PHY_ANAR_100BTXHALF| PHY_ANAR_10BTFULL|PHY_ANAR_10BTHALF); ctl &= ~PHY_CTL_AUISEL; if (IFM_SUBTYPE(media) == IFM_LOOP) bmcr |= PHY_BMCR_LOOPBK; if (IFM_SUBTYPE(media) == IFM_AUTO) bmcr |= PHY_BMCR_AUTONEGENBL; if (IFM_SUBTYPE(media) == IFM_10_5) ctl |= PHY_CTL_AUISEL; if (IFM_SUBTYPE(media) == IFM_100_TX) { bmcr |= PHY_BMCR_SPEEDSEL; if ((media & IFM_GMASK) == IFM_FDX) { bmcr |= PHY_BMCR_DUPLEX; anar |= PHY_ANAR_100BTXFULL; DIO_BYTE0_SET(TL_CMD_DUPLEX); } else if ((media & IFM_GMASK) == IFM_HDX) { bmcr &= ~PHY_BMCR_DUPLEX; anar |= PHY_ANAR_100BTXHALF; DIO_BYTE0_CLR(TL_CMD_DUPLEX); } else { bmcr &= ~PHY_BMCR_DUPLEX; anar |= PHY_ANAR_100BTXHALF; DIO_BYTE0_CLR(TL_CMD_DUPLEX); } } if (IFM_SUBTYPE(media) == IFM_10_T) { bmcr &= ~PHY_BMCR_SPEEDSEL; if ((media & IFM_GMASK) == IFM_FDX) { bmcr |= PHY_BMCR_DUPLEX; anar |= PHY_ANAR_10BTFULL; DIO_BYTE0_SET(TL_CMD_DUPLEX); } else if ((media & IFM_GMASK) == IFM_HDX) { bmcr &= ~PHY_BMCR_DUPLEX; anar |= PHY_ANAR_10BTHALF; DIO_BYTE0_CLR(TL_CMD_DUPLEX); } else { bmcr &= ~PHY_BMCR_DUPLEX; anar |= PHY_ANAR_10BTHALF; DIO_BYTE0_CLR(TL_CMD_DUPLEX); } } tl_phy_writereg(sc, PHY_BMCR, bmcr); #ifdef notyet tl_phy_writereg(sc, PHY_ANAR, anar); #endif tl_phy_writereg(sc, TL_PHY_CTL, ctl); 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 int tl_calchash(addr) unsigned char *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; } static void tl_setmulti(sc) struct tl_softc *sc; { struct ifnet *ifp; struct tl_csr *csr; u_int32_t hashes[2] = { 0, 0 }; int h; struct ifmultiaddr *ifma; csr = sc->csr; ifp = &sc->arpcom.ac_if; if (sc->arpcom.ac_multicnt > 64 || ifp->if_flags & IFF_ALLMULTI) { hashes[0] = 0xFFFFFFFF; hashes[1] = 0xFFFFFFFF; } else { for (ifma = ifp->if_multiaddrs.lh_first; ifma != NULL; ifma = ifma->ifma_link.le_next) { if (ifma->ifma_addr->sa_family != AF_LINK) continue; h = tl_calchash( LLADDR((struct sockaddr_dl *)ifma->ifma_addr)); if (h < 32) hashes[0] |= (1 << h); else hashes[1] |= (1 << (h - 32)); } } DIO_SEL(TL_HASH1); DIO_LONG_PUT(hashes[0]); DIO_SEL(TL_HASH2); DIO_LONG_PUT(hashes[1]); return; } static void tl_softreset(csr, internal) struct tl_csr *csr; int internal; { u_int32_t cmd, dummy; /* Assert the adapter reset bit. */ csr->tl_host_cmd |= TL_CMD_ADRST; /* Turn off interrupts */ csr->tl_host_cmd |= TL_CMD_INTSOFF; /* First, clear the stats registers. */ DIO_SEL(TL_TXGOODFRAMES|TL_DIO_ADDR_INC); DIO_LONG_GET(dummy); DIO_LONG_GET(dummy); DIO_LONG_GET(dummy); DIO_LONG_GET(dummy); DIO_LONG_GET(dummy); /* Clear Areg and Hash registers */ DIO_SEL(TL_AREG0_B5|TL_DIO_ADDR_INC); DIO_LONG_PUT(0x00000000); DIO_LONG_PUT(0x00000000); DIO_LONG_PUT(0x00000000); DIO_LONG_PUT(0x00000000); DIO_LONG_PUT(0x00000000); DIO_LONG_PUT(0x00000000); DIO_LONG_PUT(0x00000000); DIO_LONG_PUT(0x00000000); /* * Set up Netconfig register. Enable one channel and * one fragment mode. */ DIO_SEL(TL_NETCONFIG); DIO_WORD0_SET(TL_CFG_ONECHAN|TL_CFG_ONEFRAG); if (internal) { DIO_SEL(TL_NETCONFIG); DIO_WORD0_SET(TL_CFG_PHYEN); } else { DIO_SEL(TL_NETCONFIG); DIO_WORD0_CLR(TL_CFG_PHYEN); } /* Set PCI burst size */ DIO_SEL(TL_BSIZEREG); DIO_BYTE1_SET(0x33); /* * Load adapter irq pacing timer and tx threshold. * We make the transmit threshold 1 initially but we may * change that later. */ cmd = csr->tl_host_cmd; cmd |= TL_CMD_NES; cmd &= ~(TL_CMD_RT|TL_CMD_EOC|TL_CMD_ACK_MASK|TL_CMD_CHSEL_MASK); csr->tl_host_cmd = cmd | (TL_CMD_LDTHR | TX_THR); csr->tl_host_cmd = cmd | (TL_CMD_LDTMR | 0x00000003); /* Unreset the MII */ DIO_SEL(TL_NETSIO); DIO_BYTE1_SET(TL_SIO_NMRST); /* Clear status register */ DIO_SEL(TL_NETSTS); DIO_BYTE2_SET(TL_STS_MIRQ); DIO_BYTE2_SET(TL_STS_HBEAT); DIO_BYTE2_SET(TL_STS_TXSTOP); DIO_BYTE2_SET(TL_STS_RXSTOP); /* Enable network status interrupts for everything. */ DIO_SEL(TL_NETMASK); DIO_BYTE3_SET(TL_MASK_MASK7|TL_MASK_MASK6| TL_MASK_MASK5|TL_MASK_MASK4); /* Take the adapter out of reset */ DIO_SEL(TL_NETCMD); DIO_BYTE0_SET(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. Note that * we also save a pointer to the tl_type struct for this card since we * will need it for the softc struct and attach routine later. */ static char * tl_probe(config_id, device_id) pcici_t config_id; pcidi_t device_id; { struct tl_type *t; struct tl_iflist *new; t = tl_devs; while(t->tl_name != NULL) { if ((device_id & 0xFFFF) == t->tl_vid && ((device_id >> 16) & 0xFFFF) == t->tl_did) { new = malloc(sizeof(struct tl_iflist), M_DEVBUF, M_NOWAIT); if (new == NULL) { printf("no memory for controller struct!\n"); break; } bzero(new, sizeof(struct tl_iflist)); new->tl_config_id = config_id; new->tl_dinfo = t; new->tl_next = tl_iflist; tl_iflist = new; return(t->tl_name); } t++; } return(NULL); } /* * The ThunderLAN controller can support multiple PHYs. Logically, * this means we have to be able to deal with each PHY as a separate * interface. We therefore consider ThunderLAN devices as follows: * * o Each ThunderLAN controller device is assigned the name tlcX where * X is the controller's unit number. Each ThunderLAN device found * is assigned a different number. * * o Each PHY on each controller is assigned the name tlX. X starts at * 0 and is incremented each time an additional PHY is found. * * So, if you had two dual-channel ThunderLAN cards, you'd have * tlc0 and tlc1 (the controllers) and tl0, tl1, tl2, tl3 (the logical * interfaces). I think. I'm still not sure how dual chanel controllers * work as I've yet to see one. */ /* * Do the interface setup and attach for a PHY on a particular * ThunderLAN chip. Also also set up interrupt vectors. */ static int tl_attach_phy(csr, tl_unit, eaddr, tl_phy, ilist) struct tl_csr *csr; int tl_unit; char *eaddr; int tl_phy; struct tl_iflist *ilist; { struct tl_softc *sc; struct ifnet *ifp; int phy_ctl; struct tl_type *p = tl_phys; struct tl_mii_frame frame; int i, media = IFM_ETHER|IFM_100_TX|IFM_FDX; unsigned int round; caddr_t roundptr; if (tl_phy != TL_PHYADDR_MAX) tl_softreset(csr, 0); /* Reset the PHY again, just in case. */ bzero((char *)&frame, sizeof(frame)); frame.mii_phyaddr = tl_phy; frame.mii_regaddr = TL_PHY_GENCTL; frame.mii_data = PHY_BMCR_RESET; tl_mii_writereg(csr, &frame); DELAY(500); frame.mii_data = 0; /* First, allocate memory for the softc struct. */ sc = malloc(sizeof(struct tl_softc), M_DEVBUF, M_NOWAIT); if (sc == NULL) { printf("tlc%d: no memory for softc struct!\n", ilist->tlc_unit); return(1); } bzero(sc, sizeof(struct tl_softc)); /* * Now allocate memory for the TX and RX lists. Note that * we actually allocate 8 bytes more than we really need: * this is because we need to adjust the final address to * be aligned on a quadword (64-bit) boundary in order to * make the chip happy. If the list structures aren't properly * aligned, DMA fails and the chip generates an adapter check * interrupt and has to be reset. If you set up the softc struct * just right you can sort of obtain proper alignment 'by chance.' * But I don't want to depend on this, so instead the alignment * is forced here. */ sc->tl_ldata_ptr = malloc(sizeof(struct tl_list_data) + 8, M_DEVBUF, M_NOWAIT); if (sc->tl_ldata_ptr == NULL) { free(sc, M_DEVBUF); printf("tlc%d: no memory for list buffers!\n", ilist->tlc_unit); return(1); } /* * Convoluted but satisfies my ANSI sensibilities. GCC lets * you do casts on the LHS of an assignment, but ANSI doesn't * allow that. */ sc->tl_ldata = (struct tl_list_data *)sc->tl_ldata_ptr; round = (unsigned int)sc->tl_ldata_ptr & 0xF; roundptr = sc->tl_ldata_ptr; for (i = 0; i < 8; i++) { if (round % 8) { round++; roundptr++; } else break; } sc->tl_ldata = (struct tl_list_data *)roundptr; bzero(sc->tl_ldata, sizeof(struct tl_list_data)); sc->csr = csr; sc->tl_dinfo = ilist->tl_dinfo; sc->tl_ctlr = ilist->tlc_unit; sc->tl_unit = tl_unit; sc->tl_phy_addr = tl_phy; sc->tl_iflist = ilist; callout_handle_init(&sc->tl_stat_ch); frame.mii_regaddr = TL_PHY_VENID; tl_mii_readreg(csr, &frame); sc->tl_phy_vid = frame.mii_data; frame.mii_regaddr = TL_PHY_DEVID; tl_mii_readreg(csr, &frame); sc->tl_phy_did = frame.mii_data; frame.mii_regaddr = TL_PHY_GENSTS; tl_mii_readreg(csr, &frame); sc->tl_phy_sts = frame.mii_data; frame.mii_regaddr = TL_PHY_GENCTL; tl_mii_readreg(csr, &frame); phy_ctl = frame.mii_data; /* * PHY revision numbers tend to vary a bit. Our algorithm here * is to check everything but the 8 least significant bits. */ while(p->tl_vid) { if (sc->tl_phy_vid == p->tl_vid && (sc->tl_phy_did | 0x000F) == p->tl_did) { sc->tl_pinfo = p; break; } p++; } if (sc->tl_pinfo == NULL) { sc->tl_pinfo = &tl_phys[PHY_UNKNOWN]; } bcopy(eaddr, (char *)&sc->arpcom.ac_enaddr, ETHER_ADDR_LEN); ifp = &sc->arpcom.ac_if; ifp->if_softc = sc; ifp->if_unit = tl_unit; ifp->if_name = "tl"; ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST; ifp->if_ioctl = tl_ioctl; ifp->if_output = ether_output; ifp->if_start = tl_start; ifp->if_watchdog = tl_watchdog; ifp->if_init = tl_init; if (sc->tl_phy_sts & PHY_BMSR_100BT4 || sc->tl_phy_sts & PHY_BMSR_100BTXFULL || sc->tl_phy_sts & PHY_BMSR_100BTXHALF) ifp->if_baudrate = 100000000; else ifp->if_baudrate = 10000000; ilist->tl_sc[tl_phy] = sc; printf("tl%d at tlc%d physical interface %d\n", ifp->if_unit, sc->tl_ctlr, sc->tl_phy_addr); printf("tl%d: %s ", ifp->if_unit, sc->tl_pinfo->tl_name); if (sc->tl_phy_sts & PHY_BMSR_100BT4 || sc->tl_phy_sts & PHY_BMSR_100BTXHALF || sc->tl_phy_sts & PHY_BMSR_100BTXHALF) printf("10/100Mbps "); else { media &= ~IFM_100_TX; media |= IFM_10_T; printf("10Mbps "); } if (sc->tl_phy_sts & PHY_BMSR_100BTXFULL || sc->tl_phy_sts & PHY_BMSR_10BTFULL) printf("full duplex "); else { printf("half duplex "); media &= ~IFM_FDX; } if (sc->tl_phy_sts & PHY_BMSR_CANAUTONEG) { media = IFM_ETHER|IFM_AUTO; printf("autonegotiating\n"); } else printf("\n"); /* If this isn't a known PHY, print the PHY indentifier info. */ if (sc->tl_pinfo->tl_vid == 0) printf("tl%d: vendor id: %04x product id: %04x\n", sc->tl_unit, sc->tl_phy_vid, sc->tl_phy_did); /* Set up ifmedia data and callbacks. */ ifmedia_init(&sc->ifmedia, 0, tl_ifmedia_upd, tl_ifmedia_sts); /* * All ThunderLANs support at least 10baseT half duplex. * They also support AUI selection if used in 10Mb/s modes. * They all also support a loopback mode. */ ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_HDX, 0, NULL); ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T, 0, NULL); ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_5, 0, NULL); ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_LOOP, 0, NULL); /* Some ThunderLAN PHYs support autonegotiation. */ if (sc->tl_phy_sts & PHY_BMSR_CANAUTONEG) ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_AUTO, 0, NULL); /* Some support 10baseT full duplex. */ if (sc->tl_phy_sts & PHY_BMSR_10BTFULL) ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_10_T|IFM_FDX, 0, NULL); /* Some support 100BaseTX half duplex. */ if (sc->tl_phy_sts & PHY_BMSR_100BTXHALF) ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX, 0, NULL); if (sc->tl_phy_sts & PHY_BMSR_100BTXHALF) ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX|IFM_HDX, 0, NULL); /* Some support 100BaseTX full duplex. */ if (sc->tl_phy_sts & PHY_BMSR_100BTXFULL) ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_TX|IFM_FDX, 0, NULL); /* Some also support 100BaseT4. */ if (sc->tl_phy_sts & PHY_BMSR_100BT4) ifmedia_add(&sc->ifmedia, IFM_ETHER|IFM_100_T4, 0, NULL); /* Set default media. */ ifmedia_set(&sc->ifmedia, media); /* * Kick off an autonegotiation session if this PHY supports it. * This is necessary to make sure the chip's duplex mode matches * the PHY's duplex mode. It may not: once enabled, the PHY may * autonegotiate full-duplex mode with its link partner, but the * ThunderLAN chip defaults to half-duplex and stays there unless * told otherwise. */ if (sc->tl_phy_sts & PHY_BMSR_CANAUTONEG) tl_autoneg(sc, TL_FLAG_FORCEDELAY, 0); /* * Call MI attach routines. */ if_attach(ifp); ether_ifattach(ifp); #if NBPFILTER > 0 bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); #endif return(0); } static void tl_attach_ctlr(config_id, unit) pcici_t config_id; int unit; { int s, i, phys = 0; vm_offset_t pbase, vbase; struct tl_csr *csr; char eaddr[ETHER_ADDR_LEN]; struct tl_mii_frame frame; u_int32_t command; struct tl_iflist *ilist; s = splimp(); for (ilist = tl_iflist; ilist != NULL; ilist = ilist->tl_next) if (ilist->tl_config_id == config_id) break; if (ilist == NULL) { printf("couldn't match config id with controller struct\n"); goto fail; } /* * Map control/status registers. */ pci_conf_write(config_id, PCI_COMMAND_STATUS_REG, PCIM_CMD_MEMEN|PCIM_CMD_BUSMASTEREN); command = pci_conf_read(config_id, PCI_COMMAND_STATUS_REG); if (!(command & PCIM_CMD_MEMEN)) { printf("tlc%d: failed to enable memory mapping!\n", unit); goto fail; } if (!pci_map_mem(config_id, TL_PCI_LOMEM, &vbase, &pbase)) { printf ("tlc%d: couldn't map memory\n", unit); goto fail; } csr = (struct tl_csr *)vbase; ilist->csr = csr; ilist->tl_active_phy = TL_PHYS_IDLE; ilist->tlc_unit = unit; /* Allocate interrupt */ if (!pci_map_int(config_id, tl_intr, ilist, &net_imask)) { printf("tlc%d: couldn't map interrupt\n", unit); goto fail; } /* Reset the adapter. */ tl_softreset(csr, 1); /* * Get station address from the EEPROM. */ if (tl_read_eeprom(csr, (caddr_t)&eaddr, TL_EEPROM_EADDR, ETHER_ADDR_LEN)) { printf("tlc%d: failed to read station address\n", unit); goto fail; } /* * A ThunderLAN chip was detected. Inform the world. */ printf("tlc%d: Ethernet address: %6D\n", unit, eaddr, ":"); /* * Now attach the ThunderLAN's PHYs. There will always * be at least one PHY; if the PHY address is 0x1F, then * it's the internal one. If we encounter a lower numbered * PHY, we ignore the internal once since enabling the * internal PHY disables the external one. */ bzero((char *)&frame, sizeof(frame)); for (i = TL_PHYADDR_MIN; i < TL_PHYADDR_MAX + 1; i++) { frame.mii_phyaddr = i; frame.mii_regaddr = TL_PHY_GENCTL; frame.mii_data = PHY_BMCR_RESET; tl_mii_writereg(csr, &frame); DELAY(500); while(frame.mii_data & PHY_BMCR_RESET) tl_mii_readreg(csr, &frame); frame.mii_regaddr = TL_PHY_VENID; frame.mii_data = 0; tl_mii_readreg(csr, &frame); if (!frame.mii_data) continue; if (tl_attach_phy(csr, phys, eaddr, i, ilist)) { printf("tlc%d: failed to attach interface %d\n", unit, i); goto fail; } phys++; if (phys && i != TL_PHYADDR_MAX) break; } if (!phys) { printf("tlc%d: no physical interfaces attached!\n", unit); goto fail; } at_shutdown(tl_shutdown, ilist, SHUTDOWN_POST_SYNC); fail: splx(s); return; } /* * 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_TX_LIST_CNT; i++) { cd->tl_rx_chain[i].tl_ptr = (struct tl_list *)&ld->tl_rx_list[i]; tl_newbuf(sc, &cd->tl_rx_chain[i]); if (i == (TL_TX_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 *c; { struct mbuf *m_new = NULL; MGETHDR(m_new, M_DONTWAIT, MT_DATA); if (m_new == NULL) { printf("tl%d: no memory for rx list", sc->tl_unit); return(ENOBUFS); } MCLGET(m_new, M_DONTWAIT); if (!(m_new->m_flags & M_EXT)) { printf("tl%d: no memory for rx list", sc->tl_unit); m_freem(m_new); return(ENOBUFS); } c->tl_mbuf = m_new; c->tl_next = NULL; c->tl_ptr->tlist_frsize = MCLBYTES; c->tl_ptr->tlist_cstat = TL_CSTAT_READY; c->tl_ptr->tlist_fptr = 0; c->tl_ptr->tl_frag[0].tlist_dadr = vtophys(mtod(m_new, caddr_t)); c->tl_ptr->tl_frag[0].tlist_dcnt = MCLBYTES; 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 *cur_rx; sc = xsc; ifp = &sc->arpcom.ac_if; while(sc->tl_cdata.tl_rx_head->tl_ptr->tlist_cstat & TL_CSTAT_FRAMECMP){ r++; cur_rx = sc->tl_cdata.tl_rx_head; sc->tl_cdata.tl_rx_head = cur_rx->tl_next; m = cur_rx->tl_mbuf; total_len = cur_rx->tl_ptr->tlist_frsize; tl_newbuf(sc, cur_rx); 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; eh = mtod(m, struct ether_header *); m->m_pkthdr.rcvif = ifp; #if NBPFILTER > 0 /* * Handle BPF listeners. Let the BPF user see the packet, but * don't pass it up to the ether_input() layer unless it's * a broadcast packet, multicast packet, matches our ethernet * address or the interface is in promiscuous mode. If we don't * want the packet, just forget it. We leave the mbuf in place * since it can be used again later. */ if (ifp->if_bpf) { m->m_pkthdr.len = m->m_len = total_len; bpf_mtap(ifp, m); if (ifp->if_flags & IFF_PROMISC && (bcmp(eh->ether_dhost, sc->arpcom.ac_enaddr, ETHER_ADDR_LEN) && (eh->ether_dhost[0] & 1) == 0)) { m_freem(m); continue; } } #endif /* Remove header from mbuf and pass it on. */ m->m_pkthdr.len = m->m_len = total_len - sizeof(struct ether_header); m->m_data += sizeof(struct ether_header); ether_input(ifp, eh, m); } 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; sc = xsc; /* Flush out the receive queue and ack RXEOF interrupts. */ r = tl_intvec_rxeof(xsc, type); sc->csr->tl_host_cmd = TL_CMD_ACK | r | (type & ~(0x00100000)); r = 1; sc->csr->tl_ch_parm = vtophys(sc->tl_cdata.tl_rx_head->tl_ptr); r |= (TL_CMD_GO|TL_CMD_RT); return(r); } /* * Invalid interrupt handler. The manual says invalid interrupts * are caused by a hardware error in other hardware and that they * should just be ignored. */ static int tl_intvec_invalid(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; sc = xsc; #ifdef DIAGNOSTIC printf("tl%d: got an invalid interrupt!\n", sc->tl_unit); #endif /* Re-enable interrupts but don't ack this one. */ sc->csr->tl_host_cmd |= type; return(0); } /* * Dummy interrupt handler. Dummy interrupts are generated by setting * the ReqInt bit in the host command register. They should only occur * if we ask for them, and we never do, so if one magically appears, * we should make some noise about it. */ static int tl_intvec_dummy(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; sc = xsc; printf("tl%d: got a dummy interrupt\n", sc->tl_unit); return(1); } /* * Stats counter overflow interrupt. The chip delivers one of these * if we don't poll the stats counters often enough. */ static int tl_intvec_statoflow(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; sc = xsc; tl_stats_update(sc); return(1); } 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; } 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->arpcom.ac_if; /* Clear the timeout timer. */ ifp->if_timer = 0; if (sc->tl_cdata.tl_tx_head == NULL) { ifp->if_flags &= ~IFF_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. */ sc->csr->tl_host_cmd = TL_CMD_ACK | 0x00000001 | type; /* Then load the address of the next TX list. */ sc->csr->tl_ch_parm = vtophys(sc->tl_cdata.tl_tx_head->tl_ptr); /* Restart TX channel. */ cmd = sc->csr->tl_host_cmd; cmd &= ~TL_CMD_RT; cmd |= TL_CMD_GO|TL_CMD_INTSON; sc->csr->tl_host_cmd = cmd; return(0); } return(1); } static int tl_intvec_adchk(xsc, type) void *xsc; u_int32_t type; { struct tl_softc *sc; sc = xsc; printf("tl%d: adapter check: %x\n", sc->tl_unit, sc->csr->tl_ch_parm); tl_softreset(sc->csr, sc->tl_phy_addr == TL_PHYADDR_MAX ? 1 : 0); tl_init(sc); sc->csr->tl_host_cmd |= 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; struct tl_csr *csr; sc = xsc; csr = sc->csr; DIO_SEL(TL_NETSTS); netsts = DIO_BYTE2_GET(0xFF); DIO_BYTE2_SET(netsts); printf("tl%d: network status: %x\n", sc->tl_unit, netsts); return(1); } static void tl_intr(xilist) void *xilist; { struct tl_iflist *ilist; struct tl_softc *sc; struct tl_csr *csr; struct ifnet *ifp; int r = 0; u_int32_t type = 0; u_int16_t ints = 0; u_int8_t ivec = 0; ilist = xilist; csr = ilist->csr; /* Disable interrupts */ ints = csr->tl_host_int; csr->tl_host_int = ints; type = (ints << 16) & 0xFFFF0000; ivec = (ints & TL_VEC_MASK) >> 5; ints = (ints & TL_INT_MASK) >> 2; /* * An interrupt has been posted by the ThunderLAN, but we * have to figure out which PHY generated it before we can * do anything with it. If we receive an interrupt when we * know none of the PHYs are turned on, then either there's * a bug in the driver or we we handed an interrupt that * doesn't actually belong to us. */ if (ilist->tl_active_phy == TL_PHYS_IDLE) { /* * Exception: if this is an invalid interrupt, * just re-enable interrupts and ignore it. Probably * what's happened is that we got an interrupt meant * for another PCI device that's sharing our IRQ. */ if (ints == TL_INTR_INVALID) { csr->tl_host_cmd |= type; return; } printf("tlc%d: interrupt type %x with all phys idle\n", ilist->tlc_unit, ints); return; } sc = ilist->tl_sc[ilist->tl_active_phy]; csr = sc->csr; ifp = &sc->arpcom.ac_if; switch(ints) { case (TL_INTR_INVALID): r = tl_intvec_invalid((void *)sc, type); 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): r = tl_intvec_statoflow((void *)sc, type); break; case (TL_INTR_RXEOF): r = tl_intvec_rxeof((void *)sc, type); break; case (TL_INTR_DUMMY): r = tl_intvec_dummy((void *)sc, type); 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: printf("tl%d: bogus interrupt type\n", ifp->if_unit); break; } /* Re-enable interrupts */ if (r) csr->tl_host_cmd = TL_CMD_ACK | r | type; return; } static void tl_stats_update(xsc) void *xsc; { struct tl_softc *sc; struct ifnet *ifp; struct tl_csr *csr; struct tl_stats tl_stats; u_int32_t *p; bzero((char *)&tl_stats, sizeof(struct tl_stats)); sc = xsc; csr = sc->csr; ifp = &sc->arpcom.ac_if; p = (u_int32_t *)&tl_stats; DIO_SEL(TL_TXGOODFRAMES|TL_DIO_ADDR_INC); DIO_LONG_GET(*p++); DIO_LONG_GET(*p++); DIO_LONG_GET(*p++); DIO_LONG_GET(*p++); DIO_LONG_GET(*p++); 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); sc->tl_stat_ch = timeout(tl_stats_update, sc, hz); 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; /* * 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) { printf("tl%d: no memory for tx list", sc->tl_unit); 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); printf("tl%d: no memory for tx list", sc->tl_unit); 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) printf("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; struct tl_csr *csr; struct mbuf *m_head = NULL; u_int32_t cmd; struct tl_chain *prev = NULL, *cur_tx = NULL, *start_tx; sc = ifp->if_softc; csr = sc->csr; /* * Check for an available queue slot. If there are none, * punt. */ if (sc->tl_cdata.tl_tx_free == NULL) { ifp->if_flags |= IFF_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. */ #if NBPFILTER > 0 if (ifp->if_bpf) bpf_mtap(ifp, cur_tx->tl_mbuf); #endif } /* * 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; sc->csr->tl_ch_parm = vtophys(start_tx->tl_ptr); cmd = sc->csr->tl_host_cmd; cmd &= ~TL_CMD_RT; cmd |= TL_CMD_GO|TL_CMD_INTSON; sc->csr->tl_host_cmd = cmd; } } else { sc->tl_cdata.tl_tx_tail->tl_next = start_tx; sc->tl_cdata.tl_tx_tail->tl_ptr->tlist_fptr = vtophys(start_tx->tl_ptr); sc->tl_cdata.tl_tx_tail = start_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; struct ifnet *ifp = &sc->arpcom.ac_if; struct tl_csr *csr = sc->csr; int s; u_int16_t phy_sts; s = splimp(); ifp = &sc->arpcom.ac_if; /* * Cancel pending I/O. */ tl_stop(sc); /* * Set 'capture all frames' bit for promiscuous mode. */ if (ifp->if_flags & IFF_PROMISC) { DIO_SEL(TL_NETCMD); DIO_BYTE0_SET(TL_CMD_CAF); } else { DIO_SEL(TL_NETCMD); DIO_BYTE0_CLR(TL_CMD_CAF); } /* * Set capture broadcast bit to capture broadcast frames. */ if (ifp->if_flags & IFF_BROADCAST) { DIO_SEL(TL_NETCMD); DIO_BYTE0_CLR(TL_CMD_NOBRX); } else { DIO_SEL(TL_NETCMD); DIO_BYTE0_SET(TL_CMD_NOBRX); } /* Init our MAC address */ DIO_SEL(TL_AREG0_B5); csr->u.tl_dio_bytes.byte0 = sc->arpcom.ac_enaddr[0]; csr->u.tl_dio_bytes.byte1 = sc->arpcom.ac_enaddr[1]; csr->u.tl_dio_bytes.byte2 = sc->arpcom.ac_enaddr[2]; csr->u.tl_dio_bytes.byte3 = sc->arpcom.ac_enaddr[3]; DIO_SEL(TL_AREG0_B1); csr->u.tl_dio_bytes.byte0 = sc->arpcom.ac_enaddr[4]; csr->u.tl_dio_bytes.byte1 = sc->arpcom.ac_enaddr[5]; /* Init circular RX list. */ if (tl_list_rx_init(sc)) { printf("tl%d: failed to set up rx lists\n", sc->tl_unit); return; } /* Init TX pointers. */ tl_list_tx_init(sc); /* * Enable PHY interrupts. */ phy_sts = tl_phy_readreg(sc, TL_PHY_CTL); phy_sts |= PHY_CTL_INTEN; tl_phy_writereg(sc, TL_PHY_CTL, phy_sts); /* Enable MII interrupts. */ DIO_SEL(TL_NETSIO); DIO_BYTE1_SET(TL_SIO_MINTEN); /* Enable PCI interrupts. */ csr->tl_host_cmd |= TL_CMD_INTSON; /* Load the address of the rx list */ sc->csr->tl_host_cmd |= TL_CMD_RT; sc->csr->tl_ch_parm = vtophys(&sc->tl_ldata->tl_rx_list[0]); /* Send the RX go command */ sc->csr->tl_host_cmd |= (TL_CMD_GO|TL_CMD_RT); sc->tl_iflist->tl_active_phy = sc->tl_phy_addr; ifp->if_flags |= IFF_RUNNING; ifp->if_flags &= ~IFF_OACTIVE; (void)splx(s); /* Start the stats update counter */ sc->tl_stat_ch = timeout(tl_stats_update, sc, hz); return; } /* * Set media options. */ static int tl_ifmedia_upd(ifp) struct ifnet *ifp; { struct tl_softc *sc; struct tl_csr *csr; struct ifmedia *ifm; sc = ifp->if_softc; csr = sc->csr; ifm = &sc->ifmedia; if (IFM_TYPE(ifm->ifm_media) != IFM_ETHER) return(EINVAL); if (IFM_SUBTYPE(ifm->ifm_media) == IFM_AUTO) tl_autoneg(sc, TL_FLAG_SCHEDDELAY, 1); else tl_setmode(sc, ifm->ifm_media); return(0); } /* * Report current media status. */ static void tl_ifmedia_sts(ifp, ifmr) struct ifnet *ifp; struct ifmediareq *ifmr; { u_int16_t phy_ctl; u_int16_t phy_sts; struct tl_softc *sc; struct tl_csr *csr; sc = ifp->if_softc; csr = sc->csr; ifmr->ifm_active = IFM_ETHER; phy_ctl = tl_phy_readreg(sc, PHY_BMCR); phy_sts = tl_phy_readreg(sc, TL_PHY_CTL); if (phy_sts & PHY_CTL_AUISEL) ifmr->ifm_active |= IFM_10_5; if (phy_ctl & PHY_BMCR_LOOPBK) ifmr->ifm_active |= IFM_LOOP; if (phy_ctl & PHY_BMCR_SPEEDSEL) ifmr->ifm_active |= IFM_100_TX; else ifmr->ifm_active |= IFM_10_T; if (phy_ctl & PHY_BMCR_DUPLEX) { ifmr->ifm_active |= IFM_FDX; ifmr->ifm_active &= ~IFM_HDX; } else { ifmr->ifm_active &= ~IFM_FDX; ifmr->ifm_active |= IFM_HDX; } if (phy_ctl & PHY_BMCR_AUTONEGENBL) ifmr->ifm_active |= IFM_AUTO; return; } static int tl_ioctl(ifp, command, data) struct ifnet *ifp; int command; caddr_t data; { struct tl_softc *sc = ifp->if_softc; struct ifreq *ifr = (struct ifreq *) data; int s, error = 0; s = splimp(); switch(command) { case SIOCSIFADDR: case SIOCGIFADDR: case SIOCSIFMTU: error = ether_ioctl(ifp, command, data); break; case SIOCSIFFLAGS: /* * Make sure no more than one PHY is active * at any one time. */ if (ifp->if_flags & IFF_UP) { if (sc->tl_iflist->tl_active_phy != TL_PHYS_IDLE && sc->tl_iflist->tl_active_phy != sc->tl_phy_addr) { error = EINVAL; break; } sc->tl_iflist->tl_active_phy = sc->tl_phy_addr; tl_init(sc); } else { if (ifp->if_flags & IFF_RUNNING) { sc->tl_iflist->tl_active_phy = TL_PHYS_IDLE; tl_stop(sc); } } error = 0; break; case SIOCADDMULTI: case SIOCDELMULTI: tl_setmulti(sc); error = 0; break; case SIOCSIFMEDIA: case SIOCGIFMEDIA: error = ifmedia_ioctl(ifp, ifr, &sc->ifmedia, command); break; default: error = EINVAL; break; } (void)splx(s); return(error); } static void tl_watchdog(ifp) struct ifnet *ifp; { struct tl_softc *sc; u_int16_t bmsr; sc = ifp->if_softc; if (sc->tl_autoneg) { tl_autoneg(sc, TL_FLAG_DELAYTIMEO, 1); return; } /* Check that we're still connected. */ tl_phy_readreg(sc, PHY_BMSR); bmsr = tl_phy_readreg(sc, PHY_BMSR); if (!(bmsr & PHY_BMSR_LINKSTAT)) { printf("tl%d: no carrier\n", sc->tl_unit); tl_autoneg(sc, TL_FLAG_SCHEDDELAY, 1); } else printf("tl%d: device timeout\n", sc->tl_unit); ifp->if_oerrors++; tl_init(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; struct tl_csr *csr; struct tl_mii_frame frame; csr = sc->csr; ifp = &sc->arpcom.ac_if; /* Stop the stats updater. */ untimeout(tl_stats_update, sc, sc->tl_stat_ch); /* Stop the transmitter */ sc->csr->tl_host_cmd &= TL_CMD_RT; sc->csr->tl_host_cmd |= TL_CMD_STOP; /* Stop the receiver */ sc->csr->tl_host_cmd |= TL_CMD_RT; sc->csr->tl_host_cmd |= TL_CMD_STOP; /* * Disable host interrupts. */ sc->csr->tl_host_cmd |= TL_CMD_INTSOFF; /* * Disable PHY interrupts. */ bzero((char *)&frame, sizeof(frame)); frame.mii_phyaddr = sc->tl_phy_addr; frame.mii_regaddr = TL_PHY_CTL; tl_mii_readreg(csr, &frame); frame.mii_data |= PHY_CTL_INTEN; tl_mii_writereg(csr, &frame); /* * Disable MII interrupts. */ DIO_SEL(TL_NETSIO); DIO_BYTE1_CLR(TL_SIO_MINTEN); /* * Clear list pointer. */ sc->csr->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)); sc->tl_iflist->tl_active_phy = TL_PHYS_IDLE; ifp->if_flags &= ~(IFF_RUNNING | IFF_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(howto, xilist) int howto; void *xilist; { struct tl_iflist *ilist = (struct tl_iflist *)xilist; struct tl_csr *csr = ilist->csr; struct tl_mii_frame frame; int i; /* Stop the transmitter */ csr->tl_host_cmd &= TL_CMD_RT; csr->tl_host_cmd |= TL_CMD_STOP; /* Stop the receiver */ csr->tl_host_cmd |= TL_CMD_RT; csr->tl_host_cmd |= TL_CMD_STOP; /* * Disable host interrupts. */ csr->tl_host_cmd |= TL_CMD_INTSOFF; /* * Disable PHY interrupts. */ bzero((char *)&frame, sizeof(frame)); for (i = TL_PHYADDR_MIN; i < TL_PHYADDR_MAX + 1; i++) { frame.mii_phyaddr = i; frame.mii_regaddr = TL_PHY_CTL; tl_mii_readreg(csr, &frame); frame.mii_data |= PHY_CTL_INTEN; tl_mii_writereg(csr, &frame); }; /* * Disable MII interrupts. */ DIO_SEL(TL_NETSIO); DIO_BYTE1_CLR(TL_SIO_MINTEN); return; } static struct pci_device tlc_device = { "tlc", tl_probe, tl_attach_ctlr, &tl_count, NULL }; DATA_SET(pcidevice_set, tlc_device);