smc91c92_cs.c

pcmcia驱动源代码,直接可以在linux2.6下使用 !

/*======================================================================

    Reset the chip, reloading every register that might be corrupted.

======================================================================*/

/*
  Set transceiver type, perhaps to something other than what the user
  specified in dev->if_port.
*/
static void smc_set_xcvr(struct net_device *dev, int if_port)
{
    struct smc_private *smc = netdev_priv(dev);
    kio_addr_t ioaddr = dev->base_addr;
    u_short saved_bank;

    saved_bank = inw(ioaddr + BANK_SELECT);
    SMC_SELECT_BANK(1);
    if (if_port == 2) {
	outw(smc->cfg | CFG_AUI_SELECT, ioaddr + CONFIG);
	if ((smc->manfid == MANFID_OSITECH) &&
	    (smc->cardid != PRODID_OSITECH_SEVEN))
	    set_bits(OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
	smc->media_status = ((dev->if_port == 0) ? 0x0001 : 0x0002);
    } else {
	outw(smc->cfg, ioaddr + CONFIG);
	if ((smc->manfid == MANFID_OSITECH) &&
	    (smc->cardid != PRODID_OSITECH_SEVEN))
	    mask_bits(~OSI_AUI_PWR, ioaddr - 0x10 + OSITECH_AUI_PWR);
	smc->media_status = ((dev->if_port == 0) ? 0x0012 : 0x4001);
    }
    SMC_SELECT_BANK(saved_bank);
}

static void smc_reset(struct net_device *dev)
{
    kio_addr_t ioaddr = dev->base_addr;
    struct smc_private *smc = netdev_priv(dev);
    int i;

    DEBUG(0, "%s: smc91c92 reset called.\n", dev->name);

    /* The first interaction must be a write to bring the chip out
       of sleep mode. */
    SMC_SELECT_BANK(0);
    /* Reset the chip. */
    outw(RCR_SOFTRESET, ioaddr + RCR);
    udelay(10);

    /* Clear the transmit and receive configuration registers. */
    outw(RCR_CLEAR, ioaddr + RCR);
    outw(TCR_CLEAR, ioaddr + TCR);

    /* Set the Window 1 control, configuration and station addr registers.
       No point in writing the I/O base register ;-> */
    SMC_SELECT_BANK(1);
    /* Automatically release successfully transmitted packets,
       Accept link errors, counter and Tx error interrupts. */
    outw(CTL_AUTO_RELEASE | CTL_TE_ENABLE | CTL_CR_ENABLE,
	 ioaddr + CONTROL);
    smc_set_xcvr(dev, dev->if_port);
    if ((smc->manfid == MANFID_OSITECH) &&
	(smc->cardid != PRODID_OSITECH_SEVEN))
	outw((dev->if_port == 2 ? OSI_AUI_PWR : 0) |
	     (inw(ioaddr-0x10+OSITECH_AUI_PWR) & 0xff00),
	     ioaddr - 0x10 + OSITECH_AUI_PWR);

    /* Fill in the physical address.  The databook is wrong about the order! */
    for (i = 0; i < 6; i += 2)
	outw((dev->dev_addr[i+1]<<8)+dev->dev_addr[i],
	     ioaddr + ADDR0 + i);

    /* Reset the MMU */
    SMC_SELECT_BANK(2);
    outw(MC_RESET, ioaddr + MMU_CMD);
    outw(0, ioaddr + INTERRUPT);

    /* Re-enable the chip. */
    SMC_SELECT_BANK(0);
    outw(((smc->cfg & CFG_MII_SELECT) ? 0 : TCR_MONCSN) |
	 TCR_ENABLE | TCR_PAD_EN | smc->duplex, ioaddr + TCR);
    set_rx_mode(dev);

    if (smc->cfg & CFG_MII_SELECT) {
	SMC_SELECT_BANK(3);

	/* Reset MII */
	mdio_write(dev, smc->mii_if.phy_id, 0, 0x8000);

	/* Advertise 100F, 100H, 10F, 10H */
	mdio_write(dev, smc->mii_if.phy_id, 4, 0x01e1);

	/* Restart MII autonegotiation */
	mdio_write(dev, smc->mii_if.phy_id, 0, 0x0000);
	mdio_write(dev, smc->mii_if.phy_id, 0, 0x1200);
    }

    /* Enable interrupts. */
    SMC_SELECT_BANK(2);
    outw((IM_EPH_INT | IM_RX_OVRN_INT | IM_RCV_INT) << 8,
	 ioaddr + INTERRUPT);
}

/*======================================================================

    Media selection timer routine

======================================================================*/

static void media_check(u_long arg)
{
    struct net_device *dev = (struct net_device *) arg;
    struct smc_private *smc = netdev_priv(dev);
    kio_addr_t ioaddr = dev->base_addr;
    u_short i, media, saved_bank;
    u_short link;

    saved_bank = inw(ioaddr + BANK_SELECT);

    if (!netif_device_present(dev))
	goto reschedule;

    SMC_SELECT_BANK(2);

    /* need MC_RESET to keep the memory consistent. errata? */
    if (smc->rx_ovrn) {
	outw(MC_RESET, ioaddr + MMU_CMD);
	smc->rx_ovrn = 0;
    }
    i = inw(ioaddr + INTERRUPT);
    SMC_SELECT_BANK(0);
    media = inw(ioaddr + EPH) & EPH_LINK_OK;
    SMC_SELECT_BANK(1);
    media |= (inw(ioaddr + CONFIG) & CFG_AUI_SELECT) ? 2 : 1;

    /* Check for pending interrupt with watchdog flag set: with
       this, we can limp along even if the interrupt is blocked */
    if (smc->watchdog++ && ((i>>8) & i)) {
	if (!smc->fast_poll)
	    printk(KERN_INFO "%s: interrupt(s) dropped!\n", dev->name);
	smc_interrupt(dev->irq, dev);
	smc->fast_poll = HZ;
    }
    if (smc->fast_poll) {
	smc->fast_poll--;
	smc->media.expires = jiffies + HZ/100;
	add_timer(&smc->media);
	SMC_SELECT_BANK(saved_bank);
	return;
    }

    if (smc->cfg & CFG_MII_SELECT) {
	if (smc->mii_if.phy_id < 0)
	    goto reschedule;

	SMC_SELECT_BANK(3);
	link = mdio_read(dev, smc->mii_if.phy_id, 1);
	if (!link || (link == 0xffff)) {
  	    printk(KERN_INFO "%s: MII is missing!\n", dev->name);
	    smc->mii_if.phy_id = -1;
	    goto reschedule;
	}

	link &= 0x0004;
	if (link != smc->link_status) {
	    u_short p = mdio_read(dev, smc->mii_if.phy_id, 5);
	    printk(KERN_INFO "%s: %s link beat\n", dev->name,
		(link) ? "found" : "lost");
	    smc->duplex = (((p & 0x0100) || ((p & 0x1c0) == 0x40))
			   ? TCR_FDUPLX : 0);
	    if (link) {
	        printk(KERN_INFO "%s: autonegotiation complete: "
		       "%sbaseT-%cD selected\n", dev->name,
		       ((p & 0x0180) ? "100" : "10"),
		       (smc->duplex ? 'F' : 'H'));
	    }
	    SMC_SELECT_BANK(0);
	    outw(inw(ioaddr + TCR) | smc->duplex, ioaddr + TCR);
	    smc->link_status = link;
	}
	goto reschedule;
    }

    /* Ignore collisions unless we've had no rx's recently */
    if (time_after(jiffies, dev->last_rx + HZ)) {
	if (smc->tx_err || (smc->media_status & EPH_16COL))
	    media |= EPH_16COL;
    }
    smc->tx_err = 0;

    if (media != smc->media_status) {
	if ((media & smc->media_status & 1) &&
	    ((smc->media_status ^ media) & EPH_LINK_OK))
	    printk(KERN_INFO "%s: %s link beat\n", dev->name,
		   (smc->media_status & EPH_LINK_OK ? "lost" : "found"));
	else if ((media & smc->media_status & 2) &&
		 ((smc->media_status ^ media) & EPH_16COL))
	    printk(KERN_INFO "%s: coax cable %s\n", dev->name,
		   (media & EPH_16COL ? "problem" : "ok"));
	if (dev->if_port == 0) {
	    if (media & 1) {
		if (media & EPH_LINK_OK)
		    printk(KERN_INFO "%s: flipped to 10baseT\n",
			   dev->name);
		else
		    smc_set_xcvr(dev, 2);
	    } else {
		if (media & EPH_16COL)
		    smc_set_xcvr(dev, 1);
		else
		    printk(KERN_INFO "%s: flipped to 10base2\n",
			   dev->name);
	    }
	}
	smc->media_status = media;
    }

reschedule:
    smc->media.expires = jiffies + HZ;
    add_timer(&smc->media);
    SMC_SELECT_BANK(saved_bank);
}

static int smc_link_ok(struct net_device *dev)
{
    kio_addr_t ioaddr = dev->base_addr;
    struct smc_private *smc = netdev_priv(dev);

    if (smc->cfg & CFG_MII_SELECT) {
	return mii_link_ok(&smc->mii_if);
    } else {
        SMC_SELECT_BANK(0);
	return inw(ioaddr + EPH) & EPH_LINK_OK;
    }
}

static int smc_netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
{
    u16 tmp;
    kio_addr_t ioaddr = dev->base_addr;

    ecmd->supported = (SUPPORTED_TP | SUPPORTED_AUI |
	SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full);
		
    SMC_SELECT_BANK(1);
    tmp = inw(ioaddr + CONFIG);
    ecmd->port = (tmp & CFG_AUI_SELECT) ? PORT_AUI : PORT_TP;
    ecmd->transceiver = XCVR_INTERNAL;
    ecmd->speed = SPEED_10;
    ecmd->phy_address = ioaddr + MGMT;

    SMC_SELECT_BANK(0);
    tmp = inw(ioaddr + TCR);
    ecmd->duplex = (tmp & TCR_FDUPLX) ? DUPLEX_FULL : DUPLEX_HALF;

    return 0;
}

static int smc_netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd)
{
    u16 tmp;
    kio_addr_t ioaddr = dev->base_addr;

    if (ecmd->speed != SPEED_10)
    	return -EINVAL;
    if (ecmd->duplex != DUPLEX_HALF && ecmd->duplex != DUPLEX_FULL)
    	return -EINVAL;
    if (ecmd->port != PORT_TP && ecmd->port != PORT_AUI)
	return -EINVAL;
    if (ecmd->transceiver != XCVR_INTERNAL)
    	return -EINVAL;

    if (ecmd->port == PORT_AUI)
	smc_set_xcvr(dev, 1);
    else
	smc_set_xcvr(dev, 0);

    SMC_SELECT_BANK(0);
    tmp = inw(ioaddr + TCR);
    if (ecmd->duplex == DUPLEX_FULL)
	tmp |= TCR_FDUPLX;
    else
	tmp &= ~TCR_FDUPLX;
    outw(tmp, ioaddr + TCR);
	
    return 0;
}

static int check_if_running(struct net_device *dev)
{
	if (!netif_running(dev))
		return -EINVAL;
	return 0;
}

static void smc_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info)
{
	strcpy(info->driver, DRV_NAME);
	strcpy(info->version, DRV_VERSION);
}

static int smc_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
{
	struct smc_private *smc = netdev_priv(dev);
	kio_addr_t ioaddr = dev->base_addr;
	u16 saved_bank = inw(ioaddr + BANK_SELECT);
	int ret;

	SMC_SELECT_BANK(3);
	spin_lock_irq(&smc->lock);
	if (smc->cfg & CFG_MII_SELECT)
		ret = mii_ethtool_gset(&smc->mii_if, ecmd);
	else
		ret = smc_netdev_get_ecmd(dev, ecmd);
	spin_unlock_irq(&smc->lock);
	SMC_SELECT_BANK(saved_bank);
	return ret;
}

static int smc_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd)
{
	struct smc_private *smc = netdev_priv(dev);
	kio_addr_t ioaddr = dev->base_addr;
	u16 saved_bank = inw(ioaddr + BANK_SELECT);
	int ret;

	SMC_SELECT_BANK(3);
	spin_lock_irq(&smc->lock);
	if (smc->cfg & CFG_MII_SELECT)
		ret = mii_ethtool_sset(&smc->mii_if, ecmd);
	else
		ret = smc_netdev_set_ecmd(dev, ecmd);
	spin_unlock_irq(&smc->lock);
	SMC_SELECT_BANK(saved_bank);
	return ret;
}

static u32 smc_get_link(struct net_device *dev)
{
	struct smc_private *smc = netdev_priv(dev);
	kio_addr_t ioaddr = dev->base_addr;
	u16 saved_bank = inw(ioaddr + BANK_SELECT);
	u32 ret;

	SMC_SELECT_BANK(3);
	spin_lock_irq(&smc->lock);
	ret = smc_link_ok(dev);
	spin_unlock_irq(&smc->lock);
	SMC_SELECT_BANK(saved_bank);
	return ret;
}

#ifdef PCMCIA_DEBUG
static u32 smc_get_msglevel(struct net_device *dev)
{
	return pc_debug;
}

static void smc_set_msglevel(struct net_device *dev, u32 val)
{
	pc_debug = val;
}
#endif

static int smc_nway_reset(struct net_device *dev)
{
	struct smc_private *smc = netdev_priv(dev);
	if (smc->cfg & CFG_MII_SELECT) {
		kio_addr_t ioaddr = dev->base_addr;
		u16 saved_bank = inw(ioaddr + BANK_SELECT);
		int res;

		SMC_SELECT_BANK(3);
		res = mii_nway_restart(&smc->mii_if);
		SMC_SELECT_BANK(saved_bank);

		return res;
	} else
		return -EOPNOTSUPP;
}

static const struct ethtool_ops ethtool_ops = {
	.begin = check_if_running,
	.get_drvinfo = smc_get_drvinfo,
	.get_settings = smc_get_settings,
	.set_settings = smc_set_settings,
	.get_link = smc_get_link,
#ifdef PCMCIA_DEBUG
	.get_msglevel = smc_get_msglevel,
	.set_msglevel = smc_set_msglevel,
#endif
	.nway_reset = smc_nway_reset,
};

static int smc_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
{
	struct smc_private *smc = netdev_priv(dev);
	struct mii_ioctl_data *mii = if_mii(rq);
	int rc = 0;
	u16 saved_bank;
	kio_addr_t ioaddr = dev->base_addr;

	if (!netif_running(dev))
		return -EINVAL;

	spin_lock_irq(&smc->lock);
	saved_bank = inw(ioaddr + BANK_SELECT);
	SMC_SELECT_BANK(3);
	rc = generic_mii_ioctl(&smc->mii_if, mii, cmd, NULL);
	SMC_SELECT_BANK(saved_bank);
	spin_unlock_irq(&smc->lock);
	return rc;
}

static struct pcmcia_device_id smc91c92_ids[] = {
	PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0109, 0x0501),
	PCMCIA_PFC_DEVICE_MANF_CARD(0, 0x0140, 0x000a),
	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "CC/XJEM3288", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x04cd2988, 0x46a52d63),
	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "CC/XJEM3336", "DATA/FAX/CELL ETHERNET MODEM", 0xf510db04, 0x0143b773, 0x46a52d63),
	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "EM1144T", "PCMCIA MODEM", 0xf510db04, 0x856d66c8, 0xbd6c43ef),
	PCMCIA_PFC_DEVICE_PROD_ID123(0, "MEGAHERTZ", "XJEM1144/CCEM1144", "PCMCIA MODEM", 0xf510db04, 0x52d21e1e, 0xbd6c43ef),
	PCMCIA_PFC_DEVICE_PROD_ID12(0, "Gateway 2000", "XJEM3336", 0xdd9989be, 0x662c394c),
	PCMCIA_PFC_DEVICE_PROD_ID12(0, "MEGAHERTZ", "XJEM1144/CCEM1144", 0xf510db04, 0x52d21e1e),
	PCMCIA_PFC_DEVICE_PROD_ID12(0, "Ositech", "Trumpcard:Jack of Diamonds Modem+Ethernet", 0xc2f80cd, 0x656947b9),
	PCMCIA_PFC_DEVICE_PROD_ID12(0, "Ositech", "Trumpcard:Jack of Hearts Modem+Ethernet", 0xc2f80cd, 0xdc9ba5ed),
	PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x016c, 0x0020),
	PCMCIA_DEVICE_MANF_CARD(0x016c, 0x0023),
	PCMCIA_DEVICE_PROD_ID123("BASICS by New Media Corporation", "Ethernet", "SMC91C94", 0x23c78a9d, 0x00b2e941, 0xcef397fb),
	PCMCIA_DEVICE_PROD_ID12("ARGOSY", "Fast Ethernet PCCard", 0x78f308dc, 0xdcea68bc),
	PCMCIA_DEVICE_PROD_ID12("dit Co., Ltd.", "PC Card-10/100BTX", 0xe59365c8, 0x6a2161d1),
	PCMCIA_DEVICE_PROD_ID12("DYNALINK", "L100C", 0x6a26d1cf, 0xc16ce9c5),
	PCMCIA_DEVICE_PROD_ID12("Farallon", "Farallon Enet", 0x58d93fc4, 0x244734e9),
	PCMCIA_DEVICE_PROD_ID12("Megahertz", "CC10BT/2", 0x33234748, 0x3c95b953),
	PCMCIA_DEVICE_PROD_ID12("MELCO/SMC", "LPC-TX", 0xa2cd8e6d, 0x42da662a),
	PCMCIA_DEVICE_PROD_ID12("Ositech", "Trumpcard:Four of Diamonds Ethernet", 0xc2f80cd, 0xb3466314),
	PCMCIA_DEVICE_PROD_ID12("Ositech", "Trumpcard:Seven of Diamonds Ethernet", 0xc2f80cd, 0x194b650a),
	PCMCIA_DEVICE_PROD_ID12("PCMCIA", "Fast Ethernet PCCard", 0x281f1c5d, 0xdcea68bc),
	PCMCIA_DEVICE_PROD_ID12("Psion", "10Mb Ethernet", 0x4ef00b21, 0x844be9e9),
	PCMCIA_DEVICE_PROD_ID12("SMC", "EtherEZ Ethernet 8020", 0xc4f8b18b, 0x4a0eeb2d),
	/* These conflict with other cards! */
	/* PCMCIA_DEVICE_MANF_CARD(0x0186, 0x0100), */
	/* PCM