--- /dev/null
+/* 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 <jgarzik@pobox.com>
+ - ethtool support
+ v1.18b 1Mar2002 Zwane Mwaikambo <zwane@commfireservices.com>
+ - Power Management support
+ v1.18c 1Mar2002 David Ruggiero <jdr@farfalle.com>
+ - Full duplex support
+ v1.19 16Oct2002 Zwane Mwaikambo <zwane@linuxpower.ca>
+ - Additional ethtool features
+ v1.19a 28Oct2002 Davud Ruggiero <jdr@farfalle.com>
+ - Increase *read_eeprom udelay to workaround oops with 2 cards.
+ v1.19b 08Nov2002 Marc Zyngier <maz@wild-wind.fr.eu.org>
+ - Introduce driver model for EISA cards.
+ v1.20 04Feb2008 Ondrej Zary <linux@rainbow-software.org>
+ - 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 <linux/module.h>
+#include <linux/isa.h>
+#include <linux/pnp.h>
+#include <linux/string.h>
+#include <linux/interrupt.h>
+#include <linux/errno.h>
+#include <linux/in.h>
+#include <linux/ioport.h>
+#include <linux/init.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/pm.h>
+#include <linux/skbuff.h>
+#include <linux/delay.h> /* for udelay() */
+#include <linux/spinlock.h>
+#include <linux/ethtool.h>
+#include <linux/device.h>
+#include <linux/eisa.h>
+#include <linux/bitops.h>
+
+#include <asm/uaccess.h>
+#include <asm/io.h>
+#include <asm/irq.h>
+
+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);
Code Review / kvmfornfv.git / blobdiff