X-Git-Url: https://gerrit.opnfv.org/gerrit/gitweb?a=blobdiff_plain;f=kernel%2Fdrivers%2Fnet%2Fethernet%2F3com%2F3c509.c;fp=kernel%2Fdrivers%2Fnet%2Fethernet%2F3com%2F3c509.c;h=4547a1b8b958bab25ed6cd73ccd3d0b62112dfaa;hb=9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00;hp=0000000000000000000000000000000000000000;hpb=98260f3884f4a202f9ca5eabed40b1354c489b29;p=kvmfornfv.git diff --git a/kernel/drivers/net/ethernet/3com/3c509.c b/kernel/drivers/net/ethernet/3com/3c509.c new file mode 100644 index 000000000..4547a1b8b --- /dev/null +++ b/kernel/drivers/net/ethernet/3com/3c509.c @@ -0,0 +1,1454 @@ +/* 3c509.c: A 3c509 EtherLink3 ethernet driver for linux. */ +/* + Written 1993-2000 by Donald Becker. + + Copyright 1994-2000 by Donald Becker. + Copyright 1993 United States Government as represented by the + Director, National Security Agency. This software may be used and + distributed according to the terms of the GNU General Public License, + incorporated herein by reference. + + This driver is for the 3Com EtherLinkIII series. + + The author may be reached as becker@scyld.com, or C/O + Scyld Computing Corporation + 410 Severn Ave., Suite 210 + Annapolis MD 21403 + + Known limitations: + Because of the way 3c509 ISA detection works it's difficult to predict + a priori which of several ISA-mode cards will be detected first. + + This driver does not use predictive interrupt mode, resulting in higher + packet latency but lower overhead. If interrupts are disabled for an + unusually long time it could also result in missed packets, but in + practice this rarely happens. + + + FIXES: + Alan Cox: Removed the 'Unexpected interrupt' bug. + Michael Meskes: Upgraded to Donald Becker's version 1.07. + Alan Cox: Increased the eeprom delay. Regardless of + what the docs say some people definitely + get problems with lower (but in card spec) + delays + v1.10 4/21/97 Fixed module code so that multiple cards may be detected, + other cleanups. -djb + Andrea Arcangeli: Upgraded to Donald Becker's version 1.12. + Rick Payne: Fixed SMP race condition + v1.13 9/8/97 Made 'max_interrupt_work' an insmod-settable variable -djb + v1.14 10/15/97 Avoided waiting..discard message for fast machines -djb + v1.15 1/31/98 Faster recovery for Tx errors. -djb + v1.16 2/3/98 Different ID port handling to avoid sound cards. -djb + v1.18 12Mar2001 Andrew Morton + - Avoid bogus detect of 3c590's (Andrzej Krzysztofowicz) + - Reviewed against 1.18 from scyld.com + v1.18a 17Nov2001 Jeff Garzik + - ethtool support + v1.18b 1Mar2002 Zwane Mwaikambo + - Power Management support + v1.18c 1Mar2002 David Ruggiero + - Full duplex support + v1.19 16Oct2002 Zwane Mwaikambo + - Additional ethtool features + v1.19a 28Oct2002 Davud Ruggiero + - Increase *read_eeprom udelay to workaround oops with 2 cards. + v1.19b 08Nov2002 Marc Zyngier + - Introduce driver model for EISA cards. + v1.20 04Feb2008 Ondrej Zary + - convert to isa_driver and pnp_driver and some cleanups +*/ + +#define DRV_NAME "3c509" +#define DRV_VERSION "1.20" +#define DRV_RELDATE "04Feb2008" + +/* A few values that may be tweaked. */ + +/* Time in jiffies before concluding the transmitter is hung. */ +#define TX_TIMEOUT (400*HZ/1000) + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include /* for udelay() */ +#include +#include +#include +#include +#include + +#include +#include +#include + +static char version[] = DRV_NAME ".c:" DRV_VERSION " " DRV_RELDATE " becker@scyld.com\n"; + +#ifdef EL3_DEBUG +static int el3_debug = EL3_DEBUG; +#else +static int el3_debug = 2; +#endif + +/* Used to do a global count of all the cards in the system. Must be + * a global variable so that the eisa probe routines can increment + * it */ +static int el3_cards = 0; +#define EL3_MAX_CARDS 8 + +/* To minimize the size of the driver source I only define operating + constants if they are used several times. You'll need the manual + anyway if you want to understand driver details. */ +/* Offsets from base I/O address. */ +#define EL3_DATA 0x00 +#define EL3_CMD 0x0e +#define EL3_STATUS 0x0e +#define EEPROM_READ 0x80 + +#define EL3_IO_EXTENT 16 + +#define EL3WINDOW(win_num) outw(SelectWindow + (win_num), ioaddr + EL3_CMD) + + +/* The top five bits written to EL3_CMD are a command, the lower + 11 bits are the parameter, if applicable. */ +enum c509cmd { + TotalReset = 0<<11, SelectWindow = 1<<11, StartCoax = 2<<11, + RxDisable = 3<<11, RxEnable = 4<<11, RxReset = 5<<11, RxDiscard = 8<<11, + TxEnable = 9<<11, TxDisable = 10<<11, TxReset = 11<<11, + FakeIntr = 12<<11, AckIntr = 13<<11, SetIntrEnb = 14<<11, + SetStatusEnb = 15<<11, SetRxFilter = 16<<11, SetRxThreshold = 17<<11, + SetTxThreshold = 18<<11, SetTxStart = 19<<11, StatsEnable = 21<<11, + StatsDisable = 22<<11, StopCoax = 23<<11, PowerUp = 27<<11, + PowerDown = 28<<11, PowerAuto = 29<<11}; + +enum c509status { + IntLatch = 0x0001, AdapterFailure = 0x0002, TxComplete = 0x0004, + TxAvailable = 0x0008, RxComplete = 0x0010, RxEarly = 0x0020, + IntReq = 0x0040, StatsFull = 0x0080, CmdBusy = 0x1000, }; + +/* The SetRxFilter command accepts the following classes: */ +enum RxFilter { + RxStation = 1, RxMulticast = 2, RxBroadcast = 4, RxProm = 8 }; + +/* Register window 1 offsets, the window used in normal operation. */ +#define TX_FIFO 0x00 +#define RX_FIFO 0x00 +#define RX_STATUS 0x08 +#define TX_STATUS 0x0B +#define TX_FREE 0x0C /* Remaining free bytes in Tx buffer. */ + +#define WN0_CONF_CTRL 0x04 /* Window 0: Configuration control register */ +#define WN0_ADDR_CONF 0x06 /* Window 0: Address configuration register */ +#define WN0_IRQ 0x08 /* Window 0: Set IRQ line in bits 12-15. */ +#define WN4_MEDIA 0x0A /* Window 4: Various transcvr/media bits. */ +#define MEDIA_TP 0x00C0 /* Enable link beat and jabber for 10baseT. */ +#define WN4_NETDIAG 0x06 /* Window 4: Net diagnostic */ +#define FD_ENABLE 0x8000 /* Enable full-duplex ("external loopback") */ + +/* + * Must be a power of two (we use a binary and in the + * circular queue) + */ +#define SKB_QUEUE_SIZE 64 + +enum el3_cardtype { EL3_ISA, EL3_PNP, EL3_EISA }; + +struct el3_private { + spinlock_t lock; + /* skb send-queue */ + int head, size; + struct sk_buff *queue[SKB_QUEUE_SIZE]; + enum el3_cardtype type; +}; +static int id_port; +static int current_tag; +static struct net_device *el3_devs[EL3_MAX_CARDS]; + +/* Parameters that may be passed into the module. */ +static int debug = -1; +static int irq[] = {-1, -1, -1, -1, -1, -1, -1, -1}; +/* Maximum events (Rx packets, etc.) to handle at each interrupt. */ +static int max_interrupt_work = 10; +#ifdef CONFIG_PNP +static int nopnp; +#endif + +static int el3_common_init(struct net_device *dev); +static void el3_common_remove(struct net_device *dev); +static ushort id_read_eeprom(int index); +static ushort read_eeprom(int ioaddr, int index); +static int el3_open(struct net_device *dev); +static netdev_tx_t el3_start_xmit(struct sk_buff *skb, struct net_device *dev); +static irqreturn_t el3_interrupt(int irq, void *dev_id); +static void update_stats(struct net_device *dev); +static struct net_device_stats *el3_get_stats(struct net_device *dev); +static int el3_rx(struct net_device *dev); +static int el3_close(struct net_device *dev); +static void set_multicast_list(struct net_device *dev); +static void el3_tx_timeout (struct net_device *dev); +static void el3_down(struct net_device *dev); +static void el3_up(struct net_device *dev); +static const struct ethtool_ops ethtool_ops; +#ifdef CONFIG_PM +static int el3_suspend(struct device *, pm_message_t); +static int el3_resume(struct device *); +#else +#define el3_suspend NULL +#define el3_resume NULL +#endif + + +/* generic device remove for all device types */ +static int el3_device_remove (struct device *device); +#ifdef CONFIG_NET_POLL_CONTROLLER +static void el3_poll_controller(struct net_device *dev); +#endif + +/* Return 0 on success, 1 on error, 2 when found already detected PnP card */ +static int el3_isa_id_sequence(__be16 *phys_addr) +{ + short lrs_state = 0xff; + int i; + + /* ISA boards are detected by sending the ID sequence to the + ID_PORT. We find cards past the first by setting the 'current_tag' + on cards as they are found. Cards with their tag set will not + respond to subsequent ID sequences. */ + + outb(0x00, id_port); + outb(0x00, id_port); + for (i = 0; i < 255; i++) { + outb(lrs_state, id_port); + lrs_state <<= 1; + lrs_state = lrs_state & 0x100 ? lrs_state ^ 0xcf : lrs_state; + } + /* For the first probe, clear all board's tag registers. */ + if (current_tag == 0) + outb(0xd0, id_port); + else /* Otherwise kill off already-found boards. */ + outb(0xd8, id_port); + if (id_read_eeprom(7) != 0x6d50) + return 1; + /* Read in EEPROM data, which does contention-select. + Only the lowest address board will stay "on-line". + 3Com got the byte order backwards. */ + for (i = 0; i < 3; i++) + phys_addr[i] = htons(id_read_eeprom(i)); +#ifdef CONFIG_PNP + if (!nopnp) { + /* The ISA PnP 3c509 cards respond to the ID sequence too. + This check is needed in order not to register them twice. */ + for (i = 0; i < el3_cards; i++) { + struct el3_private *lp = netdev_priv(el3_devs[i]); + if (lp->type == EL3_PNP && + ether_addr_equal((u8 *)phys_addr, el3_devs[i]->dev_addr)) { + if (el3_debug > 3) + pr_debug("3c509 with address %02x %02x %02x %02x %02x %02x was found by ISAPnP\n", + phys_addr[0] & 0xff, phys_addr[0] >> 8, + phys_addr[1] & 0xff, phys_addr[1] >> 8, + phys_addr[2] & 0xff, phys_addr[2] >> 8); + /* Set the adaptor tag so that the next card can be found. */ + outb(0xd0 + ++current_tag, id_port); + return 2; + } + } + } +#endif /* CONFIG_PNP */ + return 0; + +} + +static void el3_dev_fill(struct net_device *dev, __be16 *phys_addr, int ioaddr, + int irq, int if_port, enum el3_cardtype type) +{ + struct el3_private *lp = netdev_priv(dev); + + memcpy(dev->dev_addr, phys_addr, ETH_ALEN); + dev->base_addr = ioaddr; + dev->irq = irq; + dev->if_port = if_port; + lp->type = type; +} + +static int el3_isa_match(struct device *pdev, unsigned int ndev) +{ + struct net_device *dev; + int ioaddr, isa_irq, if_port, err; + unsigned int iobase; + __be16 phys_addr[3]; + + while ((err = el3_isa_id_sequence(phys_addr)) == 2) + ; /* Skip to next card when PnP card found */ + if (err == 1) + return 0; + + iobase = id_read_eeprom(8); + if_port = iobase >> 14; + ioaddr = 0x200 + ((iobase & 0x1f) << 4); + if (irq[el3_cards] > 1 && irq[el3_cards] < 16) + isa_irq = irq[el3_cards]; + else + isa_irq = id_read_eeprom(9) >> 12; + + dev = alloc_etherdev(sizeof(struct el3_private)); + if (!dev) + return -ENOMEM; + + SET_NETDEV_DEV(dev, pdev); + netdev_boot_setup_check(dev); + + if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-isa")) { + free_netdev(dev); + return 0; + } + + /* Set the adaptor tag so that the next card can be found. */ + outb(0xd0 + ++current_tag, id_port); + + /* Activate the adaptor at the EEPROM location. */ + outb((ioaddr >> 4) | 0xe0, id_port); + + EL3WINDOW(0); + if (inw(ioaddr) != 0x6d50) { + free_netdev(dev); + return 0; + } + + /* Free the interrupt so that some other card can use it. */ + outw(0x0f00, ioaddr + WN0_IRQ); + + el3_dev_fill(dev, phys_addr, ioaddr, isa_irq, if_port, EL3_ISA); + dev_set_drvdata(pdev, dev); + if (el3_common_init(dev)) { + free_netdev(dev); + return 0; + } + + el3_devs[el3_cards++] = dev; + return 1; +} + +static int el3_isa_remove(struct device *pdev, + unsigned int ndev) +{ + el3_device_remove(pdev); + dev_set_drvdata(pdev, NULL); + return 0; +} + +#ifdef CONFIG_PM +static int el3_isa_suspend(struct device *dev, unsigned int n, + pm_message_t state) +{ + current_tag = 0; + return el3_suspend(dev, state); +} + +static int el3_isa_resume(struct device *dev, unsigned int n) +{ + struct net_device *ndev = dev_get_drvdata(dev); + int ioaddr = ndev->base_addr, err; + __be16 phys_addr[3]; + + while ((err = el3_isa_id_sequence(phys_addr)) == 2) + ; /* Skip to next card when PnP card found */ + if (err == 1) + return 0; + /* Set the adaptor tag so that the next card can be found. */ + outb(0xd0 + ++current_tag, id_port); + /* Enable the card */ + outb((ioaddr >> 4) | 0xe0, id_port); + EL3WINDOW(0); + if (inw(ioaddr) != 0x6d50) + return 1; + /* Free the interrupt so that some other card can use it. */ + outw(0x0f00, ioaddr + WN0_IRQ); + return el3_resume(dev); +} +#endif + +static struct isa_driver el3_isa_driver = { + .match = el3_isa_match, + .remove = el3_isa_remove, +#ifdef CONFIG_PM + .suspend = el3_isa_suspend, + .resume = el3_isa_resume, +#endif + .driver = { + .name = "3c509" + }, +}; +static int isa_registered; + +#ifdef CONFIG_PNP +static struct pnp_device_id el3_pnp_ids[] = { + { .id = "TCM5090" }, /* 3Com Etherlink III (TP) */ + { .id = "TCM5091" }, /* 3Com Etherlink III */ + { .id = "TCM5094" }, /* 3Com Etherlink III (combo) */ + { .id = "TCM5095" }, /* 3Com Etherlink III (TPO) */ + { .id = "TCM5098" }, /* 3Com Etherlink III (TPC) */ + { .id = "PNP80f7" }, /* 3Com Etherlink III compatible */ + { .id = "PNP80f8" }, /* 3Com Etherlink III compatible */ + { .id = "" } +}; +MODULE_DEVICE_TABLE(pnp, el3_pnp_ids); + +static int el3_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) +{ + short i; + int ioaddr, irq, if_port; + __be16 phys_addr[3]; + struct net_device *dev = NULL; + int err; + + ioaddr = pnp_port_start(pdev, 0); + if (!request_region(ioaddr, EL3_IO_EXTENT, "3c509-pnp")) + return -EBUSY; + irq = pnp_irq(pdev, 0); + EL3WINDOW(0); + for (i = 0; i < 3; i++) + phys_addr[i] = htons(read_eeprom(ioaddr, i)); + if_port = read_eeprom(ioaddr, 8) >> 14; + dev = alloc_etherdev(sizeof(struct el3_private)); + if (!dev) { + release_region(ioaddr, EL3_IO_EXTENT); + return -ENOMEM; + } + SET_NETDEV_DEV(dev, &pdev->dev); + netdev_boot_setup_check(dev); + + el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_PNP); + pnp_set_drvdata(pdev, dev); + err = el3_common_init(dev); + + if (err) { + pnp_set_drvdata(pdev, NULL); + free_netdev(dev); + return err; + } + + el3_devs[el3_cards++] = dev; + return 0; +} + +static void el3_pnp_remove(struct pnp_dev *pdev) +{ + el3_common_remove(pnp_get_drvdata(pdev)); + pnp_set_drvdata(pdev, NULL); +} + +#ifdef CONFIG_PM +static int el3_pnp_suspend(struct pnp_dev *pdev, pm_message_t state) +{ + return el3_suspend(&pdev->dev, state); +} + +static int el3_pnp_resume(struct pnp_dev *pdev) +{ + return el3_resume(&pdev->dev); +} +#endif + +static struct pnp_driver el3_pnp_driver = { + .name = "3c509", + .id_table = el3_pnp_ids, + .probe = el3_pnp_probe, + .remove = el3_pnp_remove, +#ifdef CONFIG_PM + .suspend = el3_pnp_suspend, + .resume = el3_pnp_resume, +#endif +}; +static int pnp_registered; +#endif /* CONFIG_PNP */ + +#ifdef CONFIG_EISA +static struct eisa_device_id el3_eisa_ids[] = { + { "TCM5090" }, + { "TCM5091" }, + { "TCM5092" }, + { "TCM5093" }, + { "TCM5094" }, + { "TCM5095" }, + { "TCM5098" }, + { "" } +}; +MODULE_DEVICE_TABLE(eisa, el3_eisa_ids); + +static int el3_eisa_probe (struct device *device); + +static struct eisa_driver el3_eisa_driver = { + .id_table = el3_eisa_ids, + .driver = { + .name = "3c579", + .probe = el3_eisa_probe, + .remove = el3_device_remove, + .suspend = el3_suspend, + .resume = el3_resume, + } +}; +static int eisa_registered; +#endif + +static const struct net_device_ops netdev_ops = { + .ndo_open = el3_open, + .ndo_stop = el3_close, + .ndo_start_xmit = el3_start_xmit, + .ndo_get_stats = el3_get_stats, + .ndo_set_rx_mode = set_multicast_list, + .ndo_tx_timeout = el3_tx_timeout, + .ndo_change_mtu = eth_change_mtu, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = el3_poll_controller, +#endif +}; + +static int el3_common_init(struct net_device *dev) +{ + struct el3_private *lp = netdev_priv(dev); + int err; + const char *if_names[] = {"10baseT", "AUI", "undefined", "BNC"}; + + spin_lock_init(&lp->lock); + + if (dev->mem_start & 0x05) { /* xcvr codes 1/3/4/12 */ + dev->if_port = (dev->mem_start & 0x0f); + } else { /* xcvr codes 0/8 */ + /* use eeprom value, but save user's full-duplex selection */ + dev->if_port |= (dev->mem_start & 0x08); + } + + /* The EL3-specific entries in the device structure. */ + dev->netdev_ops = &netdev_ops; + dev->watchdog_timeo = TX_TIMEOUT; + dev->ethtool_ops = ðtool_ops; + + err = register_netdev(dev); + if (err) { + pr_err("Failed to register 3c5x9 at %#3.3lx, IRQ %d.\n", + dev->base_addr, dev->irq); + release_region(dev->base_addr, EL3_IO_EXTENT); + return err; + } + + pr_info("%s: 3c5x9 found at %#3.3lx, %s port, address %pM, IRQ %d.\n", + dev->name, dev->base_addr, if_names[(dev->if_port & 0x03)], + dev->dev_addr, dev->irq); + + if (el3_debug > 0) + pr_info("%s", version); + return 0; + +} + +static void el3_common_remove (struct net_device *dev) +{ + unregister_netdev (dev); + release_region(dev->base_addr, EL3_IO_EXTENT); + free_netdev (dev); +} + +#ifdef CONFIG_EISA +static int __init el3_eisa_probe (struct device *device) +{ + short i; + int ioaddr, irq, if_port; + __be16 phys_addr[3]; + struct net_device *dev = NULL; + struct eisa_device *edev; + int err; + + /* Yeepee, The driver framework is calling us ! */ + edev = to_eisa_device (device); + ioaddr = edev->base_addr; + + if (!request_region(ioaddr, EL3_IO_EXTENT, "3c579-eisa")) + return -EBUSY; + + /* Change the register set to the configuration window 0. */ + outw(SelectWindow | 0, ioaddr + 0xC80 + EL3_CMD); + + irq = inw(ioaddr + WN0_IRQ) >> 12; + if_port = inw(ioaddr + 6)>>14; + for (i = 0; i < 3; i++) + phys_addr[i] = htons(read_eeprom(ioaddr, i)); + + /* Restore the "Product ID" to the EEPROM read register. */ + read_eeprom(ioaddr, 3); + + dev = alloc_etherdev(sizeof (struct el3_private)); + if (dev == NULL) { + release_region(ioaddr, EL3_IO_EXTENT); + return -ENOMEM; + } + + SET_NETDEV_DEV(dev, device); + netdev_boot_setup_check(dev); + + el3_dev_fill(dev, phys_addr, ioaddr, irq, if_port, EL3_EISA); + eisa_set_drvdata (edev, dev); + err = el3_common_init(dev); + + if (err) { + eisa_set_drvdata (edev, NULL); + free_netdev(dev); + return err; + } + + el3_devs[el3_cards++] = dev; + return 0; +} +#endif + +/* This remove works for all device types. + * + * The net dev must be stored in the driver data field */ +static int el3_device_remove(struct device *device) +{ + struct net_device *dev; + + dev = dev_get_drvdata(device); + + el3_common_remove (dev); + return 0; +} + +/* Read a word from the EEPROM using the regular EEPROM access register. + Assume that we are in register window zero. + */ +static ushort read_eeprom(int ioaddr, int index) +{ + outw(EEPROM_READ + index, ioaddr + 10); + /* Pause for at least 162 us. for the read to take place. + Some chips seem to require much longer */ + mdelay(2); + return inw(ioaddr + 12); +} + +/* Read a word from the EEPROM when in the ISA ID probe state. */ +static ushort id_read_eeprom(int index) +{ + int bit, word = 0; + + /* Issue read command, and pause for at least 162 us. for it to complete. + Assume extra-fast 16Mhz bus. */ + outb(EEPROM_READ + index, id_port); + + /* Pause for at least 162 us. for the read to take place. */ + /* Some chips seem to require much longer */ + mdelay(4); + + for (bit = 15; bit >= 0; bit--) + word = (word << 1) + (inb(id_port) & 0x01); + + if (el3_debug > 3) + pr_debug(" 3c509 EEPROM word %d %#4.4x.\n", index, word); + + return word; +} + + +static int +el3_open(struct net_device *dev) +{ + int ioaddr = dev->base_addr; + int i; + + outw(TxReset, ioaddr + EL3_CMD); + outw(RxReset, ioaddr + EL3_CMD); + outw(SetStatusEnb | 0x00, ioaddr + EL3_CMD); + + i = request_irq(dev->irq, el3_interrupt, 0, dev->name, dev); + if (i) + return i; + + EL3WINDOW(0); + if (el3_debug > 3) + pr_debug("%s: Opening, IRQ %d status@%x %4.4x.\n", dev->name, + dev->irq, ioaddr + EL3_STATUS, inw(ioaddr + EL3_STATUS)); + + el3_up(dev); + + if (el3_debug > 3) + pr_debug("%s: Opened 3c509 IRQ %d status %4.4x.\n", + dev->name, dev->irq, inw(ioaddr + EL3_STATUS)); + + return 0; +} + +static void +el3_tx_timeout (struct net_device *dev) +{ + int ioaddr = dev->base_addr; + + /* Transmitter timeout, serious problems. */ + pr_warn("%s: transmit timed out, Tx_status %2.2x status %4.4x Tx FIFO room %d\n", + dev->name, inb(ioaddr + TX_STATUS), inw(ioaddr + EL3_STATUS), + inw(ioaddr + TX_FREE)); + dev->stats.tx_errors++; + dev->trans_start = jiffies; /* prevent tx timeout */ + /* Issue TX_RESET and TX_START commands. */ + outw(TxReset, ioaddr + EL3_CMD); + outw(TxEnable, ioaddr + EL3_CMD); + netif_wake_queue(dev); +} + + +static netdev_tx_t +el3_start_xmit(struct sk_buff *skb, struct net_device *dev) +{ + struct el3_private *lp = netdev_priv(dev); + int ioaddr = dev->base_addr; + unsigned long flags; + + netif_stop_queue (dev); + + dev->stats.tx_bytes += skb->len; + + if (el3_debug > 4) { + pr_debug("%s: el3_start_xmit(length = %u) called, status %4.4x.\n", + dev->name, skb->len, inw(ioaddr + EL3_STATUS)); + } + /* + * We lock the driver against other processors. Note + * we don't need to lock versus the IRQ as we suspended + * that. This means that we lose the ability to take + * an RX during a TX upload. That sucks a bit with SMP + * on an original 3c509 (2K buffer) + * + * Using disable_irq stops us crapping on other + * time sensitive devices. + */ + + spin_lock_irqsave(&lp->lock, flags); + + /* Put out the doubleword header... */ + outw(skb->len, ioaddr + TX_FIFO); + outw(0x00, ioaddr + TX_FIFO); + /* ... and the packet rounded to a doubleword. */ + outsl(ioaddr + TX_FIFO, skb->data, (skb->len + 3) >> 2); + + if (inw(ioaddr + TX_FREE) > 1536) + netif_start_queue(dev); + else + /* Interrupt us when the FIFO has room for max-sized packet. */ + outw(SetTxThreshold + 1536, ioaddr + EL3_CMD); + + spin_unlock_irqrestore(&lp->lock, flags); + + dev_consume_skb_any (skb); + + /* Clear the Tx status stack. */ + { + short tx_status; + int i = 4; + + while (--i > 0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) { + if (tx_status & 0x38) dev->stats.tx_aborted_errors++; + if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD); + if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD); + outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */ + } + } + return NETDEV_TX_OK; +} + +/* The EL3 interrupt handler. */ +static irqreturn_t +el3_interrupt(int irq, void *dev_id) +{ + struct net_device *dev = dev_id; + struct el3_private *lp; + int ioaddr, status; + int i = max_interrupt_work; + + lp = netdev_priv(dev); + spin_lock(&lp->lock); + + ioaddr = dev->base_addr; + + if (el3_debug > 4) { + status = inw(ioaddr + EL3_STATUS); + pr_debug("%s: interrupt, status %4.4x.\n", dev->name, status); + } + + while ((status = inw(ioaddr + EL3_STATUS)) & + (IntLatch | RxComplete | StatsFull)) { + + if (status & RxComplete) + el3_rx(dev); + + if (status & TxAvailable) { + if (el3_debug > 5) + pr_debug(" TX room bit was handled.\n"); + /* There's room in the FIFO for a full-sized packet. */ + outw(AckIntr | TxAvailable, ioaddr + EL3_CMD); + netif_wake_queue (dev); + } + if (status & (AdapterFailure | RxEarly | StatsFull | TxComplete)) { + /* Handle all uncommon interrupts. */ + if (status & StatsFull) /* Empty statistics. */ + update_stats(dev); + if (status & RxEarly) { /* Rx early is unused. */ + el3_rx(dev); + outw(AckIntr | RxEarly, ioaddr + EL3_CMD); + } + if (status & TxComplete) { /* Really Tx error. */ + short tx_status; + int i = 4; + + while (--i>0 && (tx_status = inb(ioaddr + TX_STATUS)) > 0) { + if (tx_status & 0x38) dev->stats.tx_aborted_errors++; + if (tx_status & 0x30) outw(TxReset, ioaddr + EL3_CMD); + if (tx_status & 0x3C) outw(TxEnable, ioaddr + EL3_CMD); + outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */ + } + } + if (status & AdapterFailure) { + /* Adapter failure requires Rx reset and reinit. */ + outw(RxReset, ioaddr + EL3_CMD); + /* Set the Rx filter to the current state. */ + outw(SetRxFilter | RxStation | RxBroadcast + | (dev->flags & IFF_ALLMULTI ? RxMulticast : 0) + | (dev->flags & IFF_PROMISC ? RxProm : 0), + ioaddr + EL3_CMD); + outw(RxEnable, ioaddr + EL3_CMD); /* Re-enable the receiver. */ + outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); + } + } + + if (--i < 0) { + pr_err("%s: Infinite loop in interrupt, status %4.4x.\n", + dev->name, status); + /* Clear all interrupts. */ + outw(AckIntr | 0xFF, ioaddr + EL3_CMD); + break; + } + /* Acknowledge the IRQ. */ + outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); /* Ack IRQ */ + } + + if (el3_debug > 4) { + pr_debug("%s: exiting interrupt, status %4.4x.\n", dev->name, + inw(ioaddr + EL3_STATUS)); + } + spin_unlock(&lp->lock); + return IRQ_HANDLED; +} + + +#ifdef CONFIG_NET_POLL_CONTROLLER +/* + * Polling receive - used by netconsole and other diagnostic tools + * to allow network i/o with interrupts disabled. + */ +static void el3_poll_controller(struct net_device *dev) +{ + disable_irq(dev->irq); + el3_interrupt(dev->irq, dev); + enable_irq(dev->irq); +} +#endif + +static struct net_device_stats * +el3_get_stats(struct net_device *dev) +{ + struct el3_private *lp = netdev_priv(dev); + unsigned long flags; + + /* + * This is fast enough not to bother with disable IRQ + * stuff. + */ + + spin_lock_irqsave(&lp->lock, flags); + update_stats(dev); + spin_unlock_irqrestore(&lp->lock, flags); + return &dev->stats; +} + +/* Update statistics. We change to register window 6, so this should be run + single-threaded if the device is active. This is expected to be a rare + operation, and it's simpler for the rest of the driver to assume that + window 1 is always valid rather than use a special window-state variable. + */ +static void update_stats(struct net_device *dev) +{ + int ioaddr = dev->base_addr; + + if (el3_debug > 5) + pr_debug(" Updating the statistics.\n"); + /* Turn off statistics updates while reading. */ + outw(StatsDisable, ioaddr + EL3_CMD); + /* Switch to the stats window, and read everything. */ + EL3WINDOW(6); + dev->stats.tx_carrier_errors += inb(ioaddr + 0); + dev->stats.tx_heartbeat_errors += inb(ioaddr + 1); + /* Multiple collisions. */ inb(ioaddr + 2); + dev->stats.collisions += inb(ioaddr + 3); + dev->stats.tx_window_errors += inb(ioaddr + 4); + dev->stats.rx_fifo_errors += inb(ioaddr + 5); + dev->stats.tx_packets += inb(ioaddr + 6); + /* Rx packets */ inb(ioaddr + 7); + /* Tx deferrals */ inb(ioaddr + 8); + inw(ioaddr + 10); /* Total Rx and Tx octets. */ + inw(ioaddr + 12); + + /* Back to window 1, and turn statistics back on. */ + EL3WINDOW(1); + outw(StatsEnable, ioaddr + EL3_CMD); +} + +static int +el3_rx(struct net_device *dev) +{ + int ioaddr = dev->base_addr; + short rx_status; + + if (el3_debug > 5) + pr_debug(" In rx_packet(), status %4.4x, rx_status %4.4x.\n", + inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS)); + while ((rx_status = inw(ioaddr + RX_STATUS)) > 0) { + if (rx_status & 0x4000) { /* Error, update stats. */ + short error = rx_status & 0x3800; + + outw(RxDiscard, ioaddr + EL3_CMD); + dev->stats.rx_errors++; + switch (error) { + case 0x0000: dev->stats.rx_over_errors++; break; + case 0x0800: dev->stats.rx_length_errors++; break; + case 0x1000: dev->stats.rx_frame_errors++; break; + case 0x1800: dev->stats.rx_length_errors++; break; + case 0x2000: dev->stats.rx_frame_errors++; break; + case 0x2800: dev->stats.rx_crc_errors++; break; + } + } else { + short pkt_len = rx_status & 0x7ff; + struct sk_buff *skb; + + skb = netdev_alloc_skb(dev, pkt_len + 5); + if (el3_debug > 4) + pr_debug("Receiving packet size %d status %4.4x.\n", + pkt_len, rx_status); + if (skb != NULL) { + skb_reserve(skb, 2); /* Align IP on 16 byte */ + + /* 'skb->data' points to the start of sk_buff data area. */ + insl(ioaddr + RX_FIFO, skb_put(skb,pkt_len), + (pkt_len + 3) >> 2); + + outw(RxDiscard, ioaddr + EL3_CMD); /* Pop top Rx packet. */ + skb->protocol = eth_type_trans(skb,dev); + netif_rx(skb); + dev->stats.rx_bytes += pkt_len; + dev->stats.rx_packets++; + continue; + } + outw(RxDiscard, ioaddr + EL3_CMD); + dev->stats.rx_dropped++; + if (el3_debug) + pr_debug("%s: Couldn't allocate a sk_buff of size %d.\n", + dev->name, pkt_len); + } + inw(ioaddr + EL3_STATUS); /* Delay. */ + while (inw(ioaddr + EL3_STATUS) & 0x1000) + pr_debug(" Waiting for 3c509 to discard packet, status %x.\n", + inw(ioaddr + EL3_STATUS) ); + } + + return 0; +} + +/* + * Set or clear the multicast filter for this adaptor. + */ +static void +set_multicast_list(struct net_device *dev) +{ + unsigned long flags; + struct el3_private *lp = netdev_priv(dev); + int ioaddr = dev->base_addr; + int mc_count = netdev_mc_count(dev); + + if (el3_debug > 1) { + static int old; + if (old != mc_count) { + old = mc_count; + pr_debug("%s: Setting Rx mode to %d addresses.\n", + dev->name, mc_count); + } + } + spin_lock_irqsave(&lp->lock, flags); + if (dev->flags&IFF_PROMISC) { + outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast | RxProm, + ioaddr + EL3_CMD); + } + else if (mc_count || (dev->flags&IFF_ALLMULTI)) { + outw(SetRxFilter | RxStation | RxMulticast | RxBroadcast, ioaddr + EL3_CMD); + } + else + outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD); + spin_unlock_irqrestore(&lp->lock, flags); +} + +static int +el3_close(struct net_device *dev) +{ + int ioaddr = dev->base_addr; + struct el3_private *lp = netdev_priv(dev); + + if (el3_debug > 2) + pr_debug("%s: Shutting down ethercard.\n", dev->name); + + el3_down(dev); + + free_irq(dev->irq, dev); + /* Switching back to window 0 disables the IRQ. */ + EL3WINDOW(0); + if (lp->type != EL3_EISA) { + /* But we explicitly zero the IRQ line select anyway. Don't do + * it on EISA cards, it prevents the module from getting an + * IRQ after unload+reload... */ + outw(0x0f00, ioaddr + WN0_IRQ); + } + + return 0; +} + +static int +el3_link_ok(struct net_device *dev) +{ + int ioaddr = dev->base_addr; + u16 tmp; + + EL3WINDOW(4); + tmp = inw(ioaddr + WN4_MEDIA); + EL3WINDOW(1); + return tmp & (1<<11); +} + +static int +el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd) +{ + u16 tmp; + int ioaddr = dev->base_addr; + + EL3WINDOW(0); + /* obtain current transceiver via WN4_MEDIA? */ + tmp = inw(ioaddr + WN0_ADDR_CONF); + ecmd->transceiver = XCVR_INTERNAL; + switch (tmp >> 14) { + case 0: + ecmd->port = PORT_TP; + break; + case 1: + ecmd->port = PORT_AUI; + ecmd->transceiver = XCVR_EXTERNAL; + break; + case 3: + ecmd->port = PORT_BNC; + default: + break; + } + + ecmd->duplex = DUPLEX_HALF; + ecmd->supported = 0; + tmp = inw(ioaddr + WN0_CONF_CTRL); + if (tmp & (1<<13)) + ecmd->supported |= SUPPORTED_AUI; + if (tmp & (1<<12)) + ecmd->supported |= SUPPORTED_BNC; + if (tmp & (1<<9)) { + ecmd->supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half | + SUPPORTED_10baseT_Full; /* hmm... */ + EL3WINDOW(4); + tmp = inw(ioaddr + WN4_NETDIAG); + if (tmp & FD_ENABLE) + ecmd->duplex = DUPLEX_FULL; + } + + ethtool_cmd_speed_set(ecmd, SPEED_10); + EL3WINDOW(1); + return 0; +} + +static int +el3_netdev_set_ecmd(struct net_device *dev, struct ethtool_cmd *ecmd) +{ + u16 tmp; + int ioaddr = dev->base_addr; + + if (ecmd->speed != SPEED_10) + return -EINVAL; + if ((ecmd->duplex != DUPLEX_HALF) && (ecmd->duplex != DUPLEX_FULL)) + return -EINVAL; + if ((ecmd->transceiver != XCVR_INTERNAL) && (ecmd->transceiver != XCVR_EXTERNAL)) + return -EINVAL; + + /* change XCVR type */ + EL3WINDOW(0); + tmp = inw(ioaddr + WN0_ADDR_CONF); + switch (ecmd->port) { + case PORT_TP: + tmp &= ~(3<<14); + dev->if_port = 0; + break; + case PORT_AUI: + tmp |= (1<<14); + dev->if_port = 1; + break; + case PORT_BNC: + tmp |= (3<<14); + dev->if_port = 3; + break; + default: + return -EINVAL; + } + + outw(tmp, ioaddr + WN0_ADDR_CONF); + if (dev->if_port == 3) { + /* fire up the DC-DC convertor if BNC gets enabled */ + tmp = inw(ioaddr + WN0_ADDR_CONF); + if (tmp & (3 << 14)) { + outw(StartCoax, ioaddr + EL3_CMD); + udelay(800); + } else + return -EIO; + } + + EL3WINDOW(4); + tmp = inw(ioaddr + WN4_NETDIAG); + if (ecmd->duplex == DUPLEX_FULL) + tmp |= FD_ENABLE; + else + tmp &= ~FD_ENABLE; + outw(tmp, ioaddr + WN4_NETDIAG); + EL3WINDOW(1); + + return 0; +} + +static void el3_get_drvinfo(struct net_device *dev, struct ethtool_drvinfo *info) +{ + strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); + strlcpy(info->version, DRV_VERSION, sizeof(info->version)); +} + +static int el3_get_settings(struct net_device *dev, struct ethtool_cmd *ecmd) +{ + struct el3_private *lp = netdev_priv(dev); + int ret; + + spin_lock_irq(&lp->lock); + ret = el3_netdev_get_ecmd(dev, ecmd); + spin_unlock_irq(&lp->lock); + return ret; +} + +static int el3_set_settings(struct net_device *dev, struct ethtool_cmd *ecmd) +{ + struct el3_private *lp = netdev_priv(dev); + int ret; + + spin_lock_irq(&lp->lock); + ret = el3_netdev_set_ecmd(dev, ecmd); + spin_unlock_irq(&lp->lock); + return ret; +} + +static u32 el3_get_link(struct net_device *dev) +{ + struct el3_private *lp = netdev_priv(dev); + u32 ret; + + spin_lock_irq(&lp->lock); + ret = el3_link_ok(dev); + spin_unlock_irq(&lp->lock); + return ret; +} + +static u32 el3_get_msglevel(struct net_device *dev) +{ + return el3_debug; +} + +static void el3_set_msglevel(struct net_device *dev, u32 v) +{ + el3_debug = v; +} + +static const struct ethtool_ops ethtool_ops = { + .get_drvinfo = el3_get_drvinfo, + .get_settings = el3_get_settings, + .set_settings = el3_set_settings, + .get_link = el3_get_link, + .get_msglevel = el3_get_msglevel, + .set_msglevel = el3_set_msglevel, +}; + +static void +el3_down(struct net_device *dev) +{ + int ioaddr = dev->base_addr; + + netif_stop_queue(dev); + + /* Turn off statistics ASAP. We update lp->stats below. */ + outw(StatsDisable, ioaddr + EL3_CMD); + + /* Disable the receiver and transmitter. */ + outw(RxDisable, ioaddr + EL3_CMD); + outw(TxDisable, ioaddr + EL3_CMD); + + if (dev->if_port == 3) + /* Turn off thinnet power. Green! */ + outw(StopCoax, ioaddr + EL3_CMD); + else if (dev->if_port == 0) { + /* Disable link beat and jabber, if_port may change here next open(). */ + EL3WINDOW(4); + outw(inw(ioaddr + WN4_MEDIA) & ~MEDIA_TP, ioaddr + WN4_MEDIA); + } + + outw(SetIntrEnb | 0x0000, ioaddr + EL3_CMD); + + update_stats(dev); +} + +static void +el3_up(struct net_device *dev) +{ + int i, sw_info, net_diag; + int ioaddr = dev->base_addr; + + /* Activating the board required and does no harm otherwise */ + outw(0x0001, ioaddr + 4); + + /* Set the IRQ line. */ + outw((dev->irq << 12) | 0x0f00, ioaddr + WN0_IRQ); + + /* Set the station address in window 2 each time opened. */ + EL3WINDOW(2); + + for (i = 0; i < 6; i++) + outb(dev->dev_addr[i], ioaddr + i); + + if ((dev->if_port & 0x03) == 3) /* BNC interface */ + /* Start the thinnet transceiver. We should really wait 50ms...*/ + outw(StartCoax, ioaddr + EL3_CMD); + else if ((dev->if_port & 0x03) == 0) { /* 10baseT interface */ + /* Combine secondary sw_info word (the adapter level) and primary + sw_info word (duplex setting plus other useless bits) */ + EL3WINDOW(0); + sw_info = (read_eeprom(ioaddr, 0x14) & 0x400f) | + (read_eeprom(ioaddr, 0x0d) & 0xBff0); + + EL3WINDOW(4); + net_diag = inw(ioaddr + WN4_NETDIAG); + net_diag = (net_diag | FD_ENABLE); /* temporarily assume full-duplex will be set */ + pr_info("%s: ", dev->name); + switch (dev->if_port & 0x0c) { + case 12: + /* force full-duplex mode if 3c5x9b */ + if (sw_info & 0x000f) { + pr_cont("Forcing 3c5x9b full-duplex mode"); + break; + } + case 8: + /* set full-duplex mode based on eeprom config setting */ + if ((sw_info & 0x000f) && (sw_info & 0x8000)) { + pr_cont("Setting 3c5x9b full-duplex mode (from EEPROM configuration bit)"); + break; + } + default: + /* xcvr=(0 || 4) OR user has an old 3c5x9 non "B" model */ + pr_cont("Setting 3c5x9/3c5x9B half-duplex mode"); + net_diag = (net_diag & ~FD_ENABLE); /* disable full duplex */ + } + + outw(net_diag, ioaddr + WN4_NETDIAG); + pr_cont(" if_port: %d, sw_info: %4.4x\n", dev->if_port, sw_info); + if (el3_debug > 3) + pr_debug("%s: 3c5x9 net diag word is now: %4.4x.\n", dev->name, net_diag); + /* Enable link beat and jabber check. */ + outw(inw(ioaddr + WN4_MEDIA) | MEDIA_TP, ioaddr + WN4_MEDIA); + } + + /* Switch to the stats window, and clear all stats by reading. */ + outw(StatsDisable, ioaddr + EL3_CMD); + EL3WINDOW(6); + for (i = 0; i < 9; i++) + inb(ioaddr + i); + inw(ioaddr + 10); + inw(ioaddr + 12); + + /* Switch to register set 1 for normal use. */ + EL3WINDOW(1); + + /* Accept b-case and phys addr only. */ + outw(SetRxFilter | RxStation | RxBroadcast, ioaddr + EL3_CMD); + outw(StatsEnable, ioaddr + EL3_CMD); /* Turn on statistics. */ + + outw(RxEnable, ioaddr + EL3_CMD); /* Enable the receiver. */ + outw(TxEnable, ioaddr + EL3_CMD); /* Enable transmitter. */ + /* Allow status bits to be seen. */ + outw(SetStatusEnb | 0xff, ioaddr + EL3_CMD); + /* Ack all pending events, and set active indicator mask. */ + outw(AckIntr | IntLatch | TxAvailable | RxEarly | IntReq, + ioaddr + EL3_CMD); + outw(SetIntrEnb | IntLatch|TxAvailable|TxComplete|RxComplete|StatsFull, + ioaddr + EL3_CMD); + + netif_start_queue(dev); +} + +/* Power Management support functions */ +#ifdef CONFIG_PM + +static int +el3_suspend(struct device *pdev, pm_message_t state) +{ + unsigned long flags; + struct net_device *dev; + struct el3_private *lp; + int ioaddr; + + dev = dev_get_drvdata(pdev); + lp = netdev_priv(dev); + ioaddr = dev->base_addr; + + spin_lock_irqsave(&lp->lock, flags); + + if (netif_running(dev)) + netif_device_detach(dev); + + el3_down(dev); + outw(PowerDown, ioaddr + EL3_CMD); + + spin_unlock_irqrestore(&lp->lock, flags); + return 0; +} + +static int +el3_resume(struct device *pdev) +{ + unsigned long flags; + struct net_device *dev; + struct el3_private *lp; + int ioaddr; + + dev = dev_get_drvdata(pdev); + lp = netdev_priv(dev); + ioaddr = dev->base_addr; + + spin_lock_irqsave(&lp->lock, flags); + + outw(PowerUp, ioaddr + EL3_CMD); + EL3WINDOW(0); + el3_up(dev); + + if (netif_running(dev)) + netif_device_attach(dev); + + spin_unlock_irqrestore(&lp->lock, flags); + return 0; +} + +#endif /* CONFIG_PM */ + +module_param(debug,int, 0); +module_param_array(irq, int, NULL, 0); +module_param(max_interrupt_work, int, 0); +MODULE_PARM_DESC(debug, "debug level (0-6)"); +MODULE_PARM_DESC(irq, "IRQ number(s) (assigned)"); +MODULE_PARM_DESC(max_interrupt_work, "maximum events handled per interrupt"); +#ifdef CONFIG_PNP +module_param(nopnp, int, 0); +MODULE_PARM_DESC(nopnp, "disable ISA PnP support (0-1)"); +#endif /* CONFIG_PNP */ +MODULE_DESCRIPTION("3Com Etherlink III (3c509, 3c509B, 3c529, 3c579) ethernet driver"); +MODULE_LICENSE("GPL"); + +static int __init el3_init_module(void) +{ + int ret = 0; + + if (debug >= 0) + el3_debug = debug; + +#ifdef CONFIG_PNP + if (!nopnp) { + ret = pnp_register_driver(&el3_pnp_driver); + if (!ret) + pnp_registered = 1; + } +#endif + /* Select an open I/O location at 0x1*0 to do ISA contention select. */ + /* Start with 0x110 to avoid some sound cards.*/ + for (id_port = 0x110 ; id_port < 0x200; id_port += 0x10) { + if (!request_region(id_port, 1, "3c509-control")) + continue; + outb(0x00, id_port); + outb(0xff, id_port); + if (inb(id_port) & 0x01) + break; + else + release_region(id_port, 1); + } + if (id_port >= 0x200) { + id_port = 0; + pr_err("No I/O port available for 3c509 activation.\n"); + } else { + ret = isa_register_driver(&el3_isa_driver, EL3_MAX_CARDS); + if (!ret) + isa_registered = 1; + } +#ifdef CONFIG_EISA + ret = eisa_driver_register(&el3_eisa_driver); + if (!ret) + eisa_registered = 1; +#endif + +#ifdef CONFIG_PNP + if (pnp_registered) + ret = 0; +#endif + if (isa_registered) + ret = 0; +#ifdef CONFIG_EISA + if (eisa_registered) + ret = 0; +#endif + return ret; +} + +static void __exit el3_cleanup_module(void) +{ +#ifdef CONFIG_PNP + if (pnp_registered) + pnp_unregister_driver(&el3_pnp_driver); +#endif + if (isa_registered) + isa_unregister_driver(&el3_isa_driver); + if (id_port) + release_region(id_port, 1); +#ifdef CONFIG_EISA + if (eisa_registered) + eisa_driver_unregister(&el3_eisa_driver); +#endif +} + +module_init (el3_init_module); +module_exit (el3_cleanup_module);