| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Maciej W. Rozycki | 6626 | 100.00% | 4 | 100.00% |
| Total | 6626 | 4 |
// SPDX-License-Identifier: GPL-2.0 /* 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 David 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" /* A few values that may be tweaked. */ /* Time in jiffies before concluding the transmitter is hung. */ #define TX_TIMEOUT (400 * HZ / 1000) #include <linux/bitops.h> #include <linux/delay.h> /* for udelay() */ #include <linux/device.h> #include <linux/eisa.h> #include <linux/errno.h> #include <linux/etherdevice.h> #include <linux/ethtool.h> #include <linux/in.h> #include <linux/init.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/ioport.h> #include <linux/isa.h> #include <linux/module.h> #include <linux/netdevice.h> #include <linux/pm.h> #include <linux/pnp.h> #include <linux/skbuff.h> #include <linux/spinlock.h> #include <linux/string.h> #include <linux/uaccess.h> #include <asm/irq.h> #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; #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(SELECT_WINDOW + (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 { TOTAL_RESET = 0 << 11, SELECT_WINDOW = 1 << 11, START_COAX = 2 << 11, RX_DISABLE = 3 << 11, RX_ENABLE = 4 << 11, RX_RESET = 5 << 11, RX_DISCARD = 8 << 11, TX_ENABLE = 9 << 11, TX_DISABLE = 10 << 11, TX_RESET = 11 << 11, FAKE_INTR = 12 << 11, ACK_INTR = 13 << 11, SET_INTR_ENB = 14 << 11, SET_STATUS_ENB = 15 << 11, SET_RX_FILTER = 16 << 11, SET_RX_THRESHOLD = 17 << 11, SET_TX_THRESHOLD = 18 << 11, SET_TX_START = 19 << 11, STATS_ENABLE = 21 << 11, STATS_DISABLE = 22 << 11, STOP_COAX = 23 << 11, POWER_UP = 27 << 11, POWER_DOWN = 28 << 11, POWER_AUTO = 29 << 11, }; enum c509status { INT_LATCH = 0x0001, ADAPTER_FAILURE = 0x0002, TX_COMPLETE = 0x0004, TX_AVAILABLE = 0x0008, RX_COMPLETE = 0x0010, RX_EARLY = 0x0020, INT_REQ = 0x0040, STATS_FULL = 0x0080, CMD_BUSY = 0x1000, }; /* The SET_RX_FILTER command accepts the following classes: */ enum rx_filter { RX_STATION = 1, RX_MULTICAST = 2, RX_BROADCAST = 4, RX_PROM = 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 { /* for device access */ 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, unsigned int txqueue); 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); eth_hw_addr_set(dev, (u8 *)phys_addr); 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) { int ioaddr, isa_irq, if_port, err; struct net_device *dev; 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); 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 void el3_isa_remove(struct device *pdev, unsigned int ndev) { el3_device_remove(pdev); dev_set_drvdata(pdev, NULL); } #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 const 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) { struct net_device *dev = NULL; int ioaddr, irq, if_port; __be16 phys_addr[3]; short i; 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); 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 const 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_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) { static const char *const if_names[] = { "10baseT", "AUI", "undefined", "BNC" }; struct el3_private *lp = netdev_priv(dev); int err; 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); 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 el3_eisa_probe(struct device *device) { struct net_device *dev = NULL; struct eisa_device *edev; int ioaddr, irq, if_port; __be16 phys_addr[3]; short i; 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(SELECT_WINDOW | 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) { release_region(ioaddr, EL3_IO_EXTENT); return -ENOMEM; } SET_NETDEV_DEV(dev, device); 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(TX_RESET, ioaddr + EL3_CMD); outw(RX_RESET, ioaddr + EL3_CMD); outw(SET_STATUS_ENB | 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, unsigned int txqueue) { 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++; netif_trans_update(dev); /* prevent tx timeout */ /* Issue TX_RESET and TX_START commands. */ outw(TX_RESET, ioaddr + EL3_CMD); outw(TX_ENABLE, 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(SET_TX_THRESHOLD + 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(TX_RESET, ioaddr + EL3_CMD); if (tx_status & 0x3C) outw(TX_ENABLE, ioaddr + EL3_CMD); /* Pop the status stack. */ outb(0x00, ioaddr + TX_STATUS); } } return NETDEV_TX_OK; } /* The EL3 interrupt handler. */ static irqreturn_t el3_interrupt(int irq, void *dev_id) { struct net_device *dev = dev_id; int i = max_interrupt_work; struct el3_private *lp; int ioaddr, status; 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)) & (INT_LATCH | RX_COMPLETE | STATS_FULL)) { if (status & RX_COMPLETE) el3_rx(dev); if (status & TX_AVAILABLE) { if (el3_debug > 5) pr_debug(" TX room bit was handled.\n"); /* There's room in the FIFO for a full-sized packet. */ outw(ACK_INTR | TX_AVAILABLE, ioaddr + EL3_CMD); netif_wake_queue(dev); } if (status & (ADAPTER_FAILURE | RX_EARLY | STATS_FULL | TX_COMPLETE)) { /* Handle all uncommon interrupts. */ if (status & STATS_FULL) { /* Empty statistics. */ update_stats(dev); } if (status & RX_EARLY) { /* Rx early is unused. */ el3_rx(dev); outw(ACK_INTR | RX_EARLY, ioaddr + EL3_CMD); } if (status & TX_COMPLETE) { /* 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(TX_RESET, ioaddr + EL3_CMD); if (tx_status & 0x3C) outw(TX_ENABLE, ioaddr + EL3_CMD); /* Pop the status stack. */ outb(0x00, ioaddr + TX_STATUS); } } if (status & ADAPTER_FAILURE) { /* Adapter failure requires Rx reset * and reinit. */ outw(RX_RESET, ioaddr + EL3_CMD); /* Set the Rx filter to the current state. */ outw((SET_RX_FILTER | RX_STATION | RX_BROADCAST | (dev->flags & IFF_ALLMULTI ? RX_MULTICAST : 0) | (dev->flags & IFF_PROMISC ? RX_PROM : 0)), ioaddr + EL3_CMD); /* Re-enable the receiver. */ outw(RX_ENABLE, ioaddr + EL3_CMD); outw(ACK_INTR | ADAPTER_FAILURE, ioaddr + EL3_CMD); } } if (--i < 0) { pr_err("%s: Infinite loop in interrupt, status %4.4x.\n", dev->name, status); /* Clear all interrupts. */ outw(ACK_INTR | 0xFF, ioaddr + EL3_CMD); break; } /* Acknowledge the IRQ. */ outw(ACK_INTR | INT_REQ | INT_LATCH, ioaddr + EL3_CMD); } 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(STATS_DISABLE, 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(STATS_ENABLE, 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(RX_DISCARD, 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) { /* Align IP on 16 byte. */ skb_reserve(skb, 2); /* 'skb->data' points to the start of sk_buff * data area. */ insl(ioaddr + RX_FIFO, skb_put(skb, pkt_len), (pkt_len + 3) >> 2); /* Pop top Rx packet. */ outw(RX_DISCARD, ioaddr + EL3_CMD); skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); dev->stats.rx_bytes += pkt_len; dev->stats.rx_packets++; continue; } outw(RX_DISCARD, 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) { struct el3_private *lp = netdev_priv(dev); int ioaddr = dev->base_addr; int mc_count = netdev_mc_count(dev); unsigned long flags; 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((SET_RX_FILTER | RX_STATION | RX_MULTICAST | RX_BROADCAST | RX_PROM), ioaddr + EL3_CMD); } else if (mc_count || (dev->flags & IFF_ALLMULTI)) { outw(SET_RX_FILTER | RX_STATION | RX_MULTICAST | RX_BROADCAST, ioaddr + EL3_CMD); } else { outw(SET_RX_FILTER | RX_STATION | RX_BROADCAST, ioaddr + EL3_CMD); } spin_unlock_irqrestore(&lp->lock, flags); } static int el3_close(struct net_device *dev) { struct el3_private *lp = netdev_priv(dev); int ioaddr = dev->base_addr; 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 void el3_netdev_get_ecmd(struct net_device *dev, struct ethtool_link_ksettings *cmd) { int ioaddr = dev->base_addr; u32 supported; u16 tmp; EL3WINDOW(0); /* Obtain current transceiver via WN4_MEDIA? */ tmp = inw(ioaddr + WN0_ADDR_CONF); switch (tmp >> 14) { case 0: cmd->base.port = PORT_TP; break; case 1: cmd->base.port = PORT_AUI; break; case 3: cmd->base.port = PORT_BNC; break; default: break; } cmd->base.duplex = DUPLEX_HALF; supported = 0; tmp = inw(ioaddr + WN0_CONF_CTRL); if (tmp & (1 << 13)) supported |= SUPPORTED_AUI; if (tmp & (1 << 12)) supported |= SUPPORTED_BNC; if (tmp & (1 << 9)) { supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half | SUPPORTED_10baseT_Full; /* hmm... */ EL3WINDOW(4); tmp = inw(ioaddr + WN4_NETDIAG); if (tmp & FD_ENABLE) cmd->base.duplex = DUPLEX_FULL; } ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported, supported); cmd->base.speed = SPEED_10; EL3WINDOW(1); } static int el3_netdev_set_ecmd(struct net_device *dev, const struct ethtool_link_ksettings *cmd) { int ioaddr = dev->base_addr; u16 tmp; if (cmd->base.speed != SPEED_10) return -EINVAL; if (cmd->base.duplex != DUPLEX_HALF && cmd->base.duplex != DUPLEX_FULL) return -EINVAL; /* change XCVR type */ EL3WINDOW(0); tmp = inw(ioaddr + WN0_ADDR_CONF); switch (cmd->base.port) { case PORT_TP: tmp &= ~(3 << 14); dev->if_port = 0; break; case PORT_AUI: tmp &= ~(3 << 14); 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 converter if BNC gets enabled. */ tmp = inw(ioaddr + WN0_ADDR_CONF); if (tmp & (3 << 14)) { outw(START_COAX, ioaddr + EL3_CMD); udelay(800); } else { return -EIO; } } EL3WINDOW(4); tmp = inw(ioaddr + WN4_NETDIAG); if (cmd->base.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) { strscpy(info->driver, DRV_NAME, sizeof(info->driver)); } static int el3_get_link_ksettings(struct net_device *dev, struct ethtool_link_ksettings *cmd) { struct el3_private *lp = netdev_priv(dev); spin_lock_irq(&lp->lock); el3_netdev_get_ecmd(dev, cmd); spin_unlock_irq(&lp->lock); return 0; } static int el3_set_link_ksettings(struct net_device *dev, const struct ethtool_link_ksettings *cmd) { struct el3_private *lp = netdev_priv(dev); int ret; spin_lock_irq(&lp->lock); ret = el3_netdev_set_ecmd(dev, cmd); 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_link = el3_get_link, .get_msglevel = el3_get_msglevel, .set_msglevel = el3_set_msglevel, .get_link_ksettings = el3_get_link_ksettings, .set_link_ksettings = el3_set_link_ksettings, }; 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(STATS_DISABLE, ioaddr + EL3_CMD); /* Disable the receiver and transmitter. */ outw(RX_DISABLE, ioaddr + EL3_CMD); outw(TX_DISABLE, ioaddr + EL3_CMD); if (dev->if_port == 3) { /* Turn off thinnet power. Green! */ outw(STOP_COAX, 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(SET_INTR_ENB | 0x0000, ioaddr + EL3_CMD); update_stats(dev); } static void el3_up(struct net_device *dev) { int ioaddr = dev->base_addr; int i, sw_info, net_diag; /* 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(START_COAX, 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); /* Temporarily assume full-duplex will be set. */ net_diag = (net_diag | FD_ENABLE); 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; } fallthrough; 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; } fallthrough; default: /* xcvr = (0 || 4) OR user has an old 3c5x9 non "B" * model. */ pr_cont("Setting 3c5x9/3c5x9B half-duplex mode"); /* Disable full duplex. */ net_diag = (net_diag & ~FD_ENABLE); } 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(STATS_DISABLE, 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(SET_RX_FILTER | RX_STATION | RX_BROADCAST, ioaddr + EL3_CMD); /* Turn on statistics. */ outw(STATS_ENABLE, ioaddr + EL3_CMD); /* Enable the receiver. */ outw(RX_ENABLE, ioaddr + EL3_CMD); /* Enable transmitter. */ outw(TX_ENABLE, ioaddr + EL3_CMD); /* Allow status bits to be seen. */ outw(SET_STATUS_ENB | 0xff, ioaddr + EL3_CMD); /* Ack all pending events, and set active indicator mask. */ outw(ACK_INTR | INT_LATCH | TX_AVAILABLE | RX_EARLY | INT_REQ, ioaddr + EL3_CMD); outw((SET_INTR_ENB | INT_LATCH | TX_AVAILABLE | TX_COMPLETE | RX_COMPLETE | STATS_FULL), 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) { struct net_device *dev; struct el3_private *lp; unsigned long flags; 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(POWER_DOWN, ioaddr + EL3_CMD); spin_unlock_irqrestore(&lp->lock, flags); return 0; } static int el3_resume(struct device *pdev) { struct net_device *dev; struct el3_private *lp; unsigned long flags; int ioaddr; dev = dev_get_drvdata(pdev); lp = netdev_priv(dev); ioaddr = dev->base_addr; spin_lock_irqsave(&lp->lock, flags); outw(POWER_UP, 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_hw_array(irq, int, irq, 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; 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);
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