/* ====================================================================== * * A PCMCIA ethernet driver for the 3com 3c589 card. * * Copyright (C) 1999 David A. Hinds -- dahinds@users.sourceforge.net * * 3c589_cs.c 1.162 2001/10/13 00:08:50 * * The network driver code is based on Donald Becker's 3c589 code: * * Written 1994 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. * Donald Becker may be reached at becker@scyld.com * * Updated for 2.5.x by Alan Cox <alan@lxorguk.ukuu.org.uk> * * ====================================================================== */ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt #define DRV_NAME "3c589_cs" #include <linux/module.h> #include <linux/kernel.h> #include <linux/ptrace.h> #include <linux/slab.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/in.h> #include <linux/delay.h> #include <linux/ethtool.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/if_arp.h> #include <linux/ioport.h> #include <linux/bitops.h> #include <linux/jiffies.h> #include <linux/uaccess.h> #include <linux/io.h> #include <pcmcia/cistpl.h> #include <pcmcia/cisreg.h> #include <pcmcia/ciscode.h> #include <pcmcia/ds.h> /* To minimize the size of the driver source I only define operating * constants if they are used several times. You'll need the manual * if you want to understand driver details. */ /* Offsets from base I/O address. */ #define EL3_DATA 0x00 #define EL3_TIMER 0x0a #define EL3_CMD 0x0e #define EL3_STATUS 0x0e #define EEPROM_READ 0x0080 #define EEPROM_BUSY 0x8000 #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 }; 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_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 MEDIA_LED 0x0001 /* Enable link light on 3C589E cards. */ /* Time in jiffies before concluding Tx hung */ #define TX_TIMEOUT ((400*HZ)/1000) struct el3_private { <------>struct pcmcia_device *p_dev; <------>/* For transceiver monitoring */ <------>struct timer_list media; <------>u16 media_status; <------>u16 fast_poll; <------>unsigned long last_irq; <------>spinlock_t lock; }; static const char *if_names[] = { "auto", "10baseT", "10base2", "AUI" }; /*====================================================================*/ /* Module parameters */ MODULE_AUTHOR("David Hinds <dahinds@users.sourceforge.net>"); MODULE_DESCRIPTION("3Com 3c589 series PCMCIA ethernet driver"); MODULE_LICENSE("GPL"); #define INT_MODULE_PARM(n, v) static int n = v; module_param(n, int, 0) /* Special hook for setting if_port when module is loaded */ INT_MODULE_PARM(if_port, 0); /*====================================================================*/ static int tc589_config(struct pcmcia_device *link); static void tc589_release(struct pcmcia_device *link); static u16 read_eeprom(unsigned int ioaddr, int index); static void tc589_reset(struct net_device *dev); static void media_check(struct timer_list *t); static int el3_config(struct net_device *dev, struct ifmap *map); 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 el3_tx_timeout(struct net_device *dev, unsigned int txqueue); static void set_rx_mode(struct net_device *dev); static void set_multicast_list(struct net_device *dev); static const struct ethtool_ops netdev_ethtool_ops; static void tc589_detach(struct pcmcia_device *p_dev); static const struct net_device_ops el3_netdev_ops = { <------>.ndo_open = el3_open, <------>.ndo_stop = el3_close, <------>.ndo_start_xmit = el3_start_xmit, <------>.ndo_tx_timeout = el3_tx_timeout, <------>.ndo_set_config = el3_config, <------>.ndo_get_stats = el3_get_stats, <------>.ndo_set_rx_mode = set_multicast_list, <------>.ndo_set_mac_address = eth_mac_addr, <------>.ndo_validate_addr = eth_validate_addr, }; static int tc589_probe(struct pcmcia_device *link) { <------>struct el3_private *lp; <------>struct net_device *dev; <------>dev_dbg(&link->dev, "3c589_attach()\n"); <------>/* Create new ethernet device */ <------>dev = alloc_etherdev(sizeof(struct el3_private)); <------>if (!dev) <------><------>return -ENOMEM; <------>lp = netdev_priv(dev); <------>link->priv = dev; <------>lp->p_dev = link; <------>spin_lock_init(&lp->lock); <------>link->resource[0]->end = 16; <------>link->resource[0]->flags |= IO_DATA_PATH_WIDTH_16; <------>link->config_flags |= CONF_ENABLE_IRQ; <------>link->config_index = 1; <------>dev->netdev_ops = &el3_netdev_ops; <------>dev->watchdog_timeo = TX_TIMEOUT; <------>dev->ethtool_ops = &netdev_ethtool_ops; <------>return tc589_config(link); } static void tc589_detach(struct pcmcia_device *link) { <------>struct net_device *dev = link->priv; <------>dev_dbg(&link->dev, "3c589_detach\n"); <------>unregister_netdev(dev); <------>tc589_release(link); <------>free_netdev(dev); } /* tc589_detach */ static int tc589_config(struct pcmcia_device *link) { <------>struct net_device *dev = link->priv; <------>__be16 *phys_addr; <------>int ret, i, j, multi = 0, fifo; <------>unsigned int ioaddr; <------>static const char * const ram_split[] = {"5:3", "3:1", "1:1", "3:5"}; <------>u8 *buf; <------>size_t len; <------>dev_dbg(&link->dev, "3c589_config\n"); <------>phys_addr = (__be16 *)dev->dev_addr; <------>/* Is this a 3c562? */ <------>if (link->manf_id != MANFID_3COM) <------><------>dev_info(&link->dev, "hmmm, is this really a 3Com card??\n"); <------>multi = (link->card_id == PRODID_3COM_3C562); <------>link->io_lines = 16; <------>/* For the 3c562, the base address must be xx00-xx7f */ <------>for (i = j = 0; j < 0x400; j += 0x10) { <------><------>if (multi && (j & 0x80)) <------><------><------>continue; <------><------>link->resource[0]->start = j ^ 0x300; <------><------>i = pcmcia_request_io(link); <------><------>if (i == 0) <------><------><------>break; <------>} <------>if (i != 0) <------><------>goto failed; <------>ret = pcmcia_request_irq(link, el3_interrupt); <------>if (ret) <------><------>goto failed; <------>ret = pcmcia_enable_device(link); <------>if (ret) <------><------>goto failed; <------>dev->irq = link->irq; <------>dev->base_addr = link->resource[0]->start; <------>ioaddr = dev->base_addr; <------>EL3WINDOW(0); <------>/* The 3c589 has an extra EEPROM for configuration info, including <------> * the hardware address. The 3c562 puts the address in the CIS. <------> */ <------>len = pcmcia_get_tuple(link, 0x88, &buf); <------>if (buf && len >= 6) { <------><------>for (i = 0; i < 3; i++) <------><------><------>phys_addr[i] = htons(le16_to_cpu(buf[i*2])); <------><------>kfree(buf); <------>} else { <------><------>kfree(buf); /* 0 < len < 6 */ <------><------>for (i = 0; i < 3; i++) <------><------><------>phys_addr[i] = htons(read_eeprom(ioaddr, i)); <------><------>if (phys_addr[0] == htons(0x6060)) { <------><------><------>dev_err(&link->dev, "IO port conflict at 0x%03lx-0x%03lx\n", <------><------><------><------><------>dev->base_addr, dev->base_addr+15); <------><------><------>goto failed; <------><------>} <------>} <------>/* The address and resource configuration register aren't loaded from <------> * the EEPROM and *must* be set to 0 and IRQ3 for the PCMCIA version. <------> */ <------>outw(0x3f00, ioaddr + 8); <------>fifo = inl(ioaddr); <------>/* The if_port symbol can be set when the module is loaded */ <------>if ((if_port >= 0) && (if_port <= 3)) <------><------>dev->if_port = if_port; <------>else <------><------>dev_err(&link->dev, "invalid if_port requested\n"); <------>SET_NETDEV_DEV(dev, &link->dev); <------>if (register_netdev(dev) != 0) { <------><------>dev_err(&link->dev, "register_netdev() failed\n"); <------><------>goto failed; <------>} <------>netdev_info(dev, "3Com 3c%s, io %#3lx, irq %d, hw_addr %pM\n", <------><------><------>(multi ? "562" : "589"), dev->base_addr, dev->irq, <------><------><------>dev->dev_addr); <------>netdev_info(dev, " %dK FIFO split %s Rx:Tx, %s xcvr\n", <------><------><------>(fifo & 7) ? 32 : 8, ram_split[(fifo >> 16) & 3], <------><------><------>if_names[dev->if_port]); <------>return 0; failed: <------>tc589_release(link); <------>return -ENODEV; } /* tc589_config */ static void tc589_release(struct pcmcia_device *link) { <------>pcmcia_disable_device(link); } static int tc589_suspend(struct pcmcia_device *link) { <------>struct net_device *dev = link->priv; <------>if (link->open) <------><------>netif_device_detach(dev); <------>return 0; } static int tc589_resume(struct pcmcia_device *link) { <------>struct net_device *dev = link->priv; <------>if (link->open) { <------><------>tc589_reset(dev); <------><------>netif_device_attach(dev); <------>} <------>return 0; } /*====================================================================*/ /* Use this for commands that may take time to finish */ static void tc589_wait_for_completion(struct net_device *dev, int cmd) { <------>int i = 100; <------>outw(cmd, dev->base_addr + EL3_CMD); <------>while (--i > 0) <------><------>if (!(inw(dev->base_addr + EL3_STATUS) & 0x1000)) <------><------><------>break; <------>if (i == 0) <------><------>netdev_warn(dev, "command 0x%04x did not complete!\n", cmd); } /* Read a word from the EEPROM using the regular EEPROM access register. * Assume that we are in register window zero. */ static u16 read_eeprom(unsigned int ioaddr, int index) { <------>int i; <------>outw(EEPROM_READ + index, ioaddr + 10); <------>/* Reading the eeprom takes 162 us */ <------>for (i = 1620; i >= 0; i--) <------><------>if ((inw(ioaddr + 10) & EEPROM_BUSY) == 0) <------><------><------>break; <------>return inw(ioaddr + 12); } /* Set transceiver type, perhaps to something other than what the user * specified in dev->if_port. */ static void tc589_set_xcvr(struct net_device *dev, int if_port) { <------>struct el3_private *lp = netdev_priv(dev); <------>unsigned int ioaddr = dev->base_addr; <------>EL3WINDOW(0); <------>switch (if_port) { <------>case 0: <------>case 1: <------><------>outw(0, ioaddr + 6); <------><------>break; <------>case 2: <------><------>outw(3<<14, ioaddr + 6); <------><------>break; <------>case 3: <------><------>outw(1<<14, ioaddr + 6); <------><------>break; <------>} <------>/* On PCMCIA, this just turns on the LED */ <------>outw((if_port == 2) ? StartCoax : StopCoax, ioaddr + EL3_CMD); <------>/* 10baseT interface, enable link beat and jabber check. */ <------>EL3WINDOW(4); <------>outw(MEDIA_LED | ((if_port < 2) ? MEDIA_TP : 0), ioaddr + WN4_MEDIA); <------>EL3WINDOW(1); <------>if (if_port == 2) <------><------>lp->media_status = ((dev->if_port == 0) ? 0x8000 : 0x4000); <------>else <------><------>lp->media_status = ((dev->if_port == 0) ? 0x4010 : 0x8800); } static void dump_status(struct net_device *dev) { <------>unsigned int ioaddr = dev->base_addr; <------>EL3WINDOW(1); <------>netdev_info(dev, " irq status %04x, rx status %04x, tx status %02x tx free %04x\n", <------><------><------>inw(ioaddr+EL3_STATUS), inw(ioaddr+RX_STATUS), <------><------><------>inb(ioaddr+TX_STATUS), inw(ioaddr+TX_FREE)); <------>EL3WINDOW(4); <------>netdev_info(dev, " diagnostics: fifo %04x net %04x ethernet %04x media %04x\n", <------><------><------>inw(ioaddr+0x04), inw(ioaddr+0x06), inw(ioaddr+0x08), <------><------><------>inw(ioaddr+0x0a)); <------>EL3WINDOW(1); } /* Reset and restore all of the 3c589 registers. */ static void tc589_reset(struct net_device *dev) { <------>unsigned int ioaddr = dev->base_addr; <------>int i; <------>EL3WINDOW(0); <------>outw(0x0001, ioaddr + 4); /* Activate board. */ <------>outw(0x3f00, ioaddr + 8); /* Set the IRQ line. */ <------>/* Set the station address in window 2. */ <------>EL3WINDOW(2); <------>for (i = 0; i < 6; i++) <------><------>outb(dev->dev_addr[i], ioaddr + i); <------>tc589_set_xcvr(dev, dev->if_port); <------>/* 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); <------>set_rx_mode(dev); <------>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 | RxComplete | StatsFull <------> | AdapterFailure, ioaddr + EL3_CMD); } static void netdev_get_drvinfo(struct net_device *dev, <------><------><------> struct ethtool_drvinfo *info) { <------>strlcpy(info->driver, DRV_NAME, sizeof(info->driver)); <------>snprintf(info->bus_info, sizeof(info->bus_info), <------><------>"PCMCIA 0x%lx", dev->base_addr); } static const struct ethtool_ops netdev_ethtool_ops = { <------>.get_drvinfo = netdev_get_drvinfo, }; static int el3_config(struct net_device *dev, struct ifmap *map) { <------>if ((map->port != (u_char)(-1)) && (map->port != dev->if_port)) { <------><------>if (map->port <= 3) { <------><------><------>dev->if_port = map->port; <------><------><------>netdev_info(dev, "switched to %s port\n", if_names[dev->if_port]); <------><------><------>tc589_set_xcvr(dev, dev->if_port); <------><------>} else { <------><------><------>return -EINVAL; <------><------>} <------>} <------>return 0; } static int el3_open(struct net_device *dev) { <------>struct el3_private *lp = netdev_priv(dev); <------>struct pcmcia_device *link = lp->p_dev; <------>if (!pcmcia_dev_present(link)) <------><------>return -ENODEV; <------>link->open++; <------>netif_start_queue(dev); <------>tc589_reset(dev); <------>timer_setup(&lp->media, media_check, 0); <------>mod_timer(&lp->media, jiffies + HZ); <------>dev_dbg(&link->dev, "%s: opened, status %4.4x.\n", <------> dev->name, inw(dev->base_addr + EL3_STATUS)); <------>return 0; } static void el3_tx_timeout(struct net_device *dev, unsigned int txqueue) { <------>unsigned int ioaddr = dev->base_addr; <------>netdev_warn(dev, "Transmit timed out!\n"); <------>dump_status(dev); <------>dev->stats.tx_errors++; <------>netif_trans_update(dev); /* prevent tx timeout */ <------>/* Issue TX_RESET and TX_START commands. */ <------>tc589_wait_for_completion(dev, TxReset); <------>outw(TxEnable, ioaddr + EL3_CMD); <------>netif_wake_queue(dev); } static void pop_tx_status(struct net_device *dev) { <------>unsigned int ioaddr = dev->base_addr; <------>int i; <------>/* Clear the Tx status stack. */ <------>for (i = 32; i > 0; i--) { <------><------>u_char tx_status = inb(ioaddr + TX_STATUS); <------><------>if (!(tx_status & 0x84)) <------><------><------>break; <------><------>/* reset transmitter on jabber error or underrun */ <------><------>if (tx_status & 0x30) <------><------><------>tc589_wait_for_completion(dev, TxReset); <------><------>if (tx_status & 0x38) { <------><------><------>netdev_dbg(dev, "transmit error: status 0x%02x\n", tx_status); <------><------><------>outw(TxEnable, ioaddr + EL3_CMD); <------><------><------>dev->stats.tx_aborted_errors++; <------><------>} <------><------>outb(0x00, ioaddr + TX_STATUS); /* Pop the status stack. */ <------>} } static netdev_tx_t el3_start_xmit(struct sk_buff *skb, <------><------><------><------><------>struct net_device *dev) { <------>unsigned int ioaddr = dev->base_addr; <------>struct el3_private *priv = netdev_priv(dev); <------>unsigned long flags; <------>netdev_dbg(dev, "el3_start_xmit(length = %ld) called, status %4.4x.\n", <------> (long)skb->len, inw(ioaddr + EL3_STATUS)); <------>spin_lock_irqsave(&priv->lock, flags); <------>dev->stats.tx_bytes += skb->len; <------>/* 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_stop_queue(dev); <------><------>/* Interrupt us when the FIFO has room for max-sized packet. */ <------><------>outw(SetTxThreshold + 1536, ioaddr + EL3_CMD); <------>} <------>pop_tx_status(dev); <------>spin_unlock_irqrestore(&priv->lock, flags); <------>dev_kfree_skb(skb); <------>return NETDEV_TX_OK; } /* The EL3 interrupt handler. */ static irqreturn_t el3_interrupt(int irq, void *dev_id) { <------>struct net_device *dev = (struct net_device *) dev_id; <------>struct el3_private *lp = netdev_priv(dev); <------>unsigned int ioaddr; <------>__u16 status; <------>int i = 0, handled = 1; <------>if (!netif_device_present(dev)) <------><------>return IRQ_NONE; <------>ioaddr = dev->base_addr; <------>netdev_dbg(dev, "interrupt, status %4.4x.\n", inw(ioaddr + EL3_STATUS)); <------>spin_lock(&lp->lock); <------>while ((status = inw(ioaddr + EL3_STATUS)) & <------>(IntLatch | RxComplete | StatsFull)) { <------><------>if ((status & 0xe000) != 0x2000) { <------><------><------>netdev_dbg(dev, "interrupt from dead card\n"); <------><------><------>handled = 0; <------><------><------>break; <------><------>} <------><------>if (status & RxComplete) <------><------><------>el3_rx(dev); <------><------>if (status & TxAvailable) { <------><------><------>netdev_dbg(dev, " 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 & TxComplete) <------><------><------>pop_tx_status(dev); <------><------>if (status & (AdapterFailure | RxEarly | StatsFull)) { <------><------><------>/* 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 & AdapterFailure) { <------><------><------><------>u16 fifo_diag; <------><------><------><------>EL3WINDOW(4); <------><------><------><------>fifo_diag = inw(ioaddr + 4); <------><------><------><------>EL3WINDOW(1); <------><------><------><------>netdev_warn(dev, "adapter failure, FIFO diagnostic register %04x.\n", <------><------><------> fifo_diag); <------><------><------><------>if (fifo_diag & 0x0400) { <------><------><------><------><------>/* Tx overrun */ <------><------><------><------><------>tc589_wait_for_completion(dev, TxReset); <------><------><------><------><------>outw(TxEnable, ioaddr + EL3_CMD); <------><------><------><------>} <------><------><------><------>if (fifo_diag & 0x2000) { <------><------><------><------><------>/* Rx underrun */ <------><------><------><------><------>tc589_wait_for_completion(dev, RxReset); <------><------><------><------><------>set_rx_mode(dev); <------><------><------><------><------>outw(RxEnable, ioaddr + EL3_CMD); <------><------><------><------>} <------><------><------><------>outw(AckIntr | AdapterFailure, ioaddr + EL3_CMD); <------><------><------>} <------><------>} <------><------>if (++i > 10) { <------><------><------>netdev_err(dev, "infinite loop in interrupt, status %4.4x.\n", <------><------><------><------><------>status); <------><------><------>/* Clear all interrupts */ <------><------><------>outw(AckIntr | 0xFF, ioaddr + EL3_CMD); <------><------><------>break; <------><------>} <------><------>/* Acknowledge the IRQ. */ <------><------>outw(AckIntr | IntReq | IntLatch, ioaddr + EL3_CMD); <------>} <------>lp->last_irq = jiffies; <------>spin_unlock(&lp->lock); <------>netdev_dbg(dev, "exiting interrupt, status %4.4x.\n", <------><------><------>inw(ioaddr + EL3_STATUS)); <------>return IRQ_RETVAL(handled); } static void media_check(struct timer_list *t) { <------>struct el3_private *lp = from_timer(lp, t, media); <------>struct net_device *dev = lp->p_dev->priv; <------>unsigned int ioaddr = dev->base_addr; <------>u16 media, errs; <------>unsigned long flags; <------>if (!netif_device_present(dev)) <------><------>goto reschedule; <------>/* Check for pending interrupt with expired latency timer: with <------> * this, we can limp along even if the interrupt is blocked <------> */ <------>if ((inw(ioaddr + EL3_STATUS) & IntLatch) && <------>(inb(ioaddr + EL3_TIMER) == 0xff)) { <------><------>if (!lp->fast_poll) <------><------><------>netdev_warn(dev, "interrupt(s) dropped!\n"); <------><------>local_irq_save(flags); <------><------>el3_interrupt(dev->irq, dev); <------><------>local_irq_restore(flags); <------><------>lp->fast_poll = HZ; <------>} <------>if (lp->fast_poll) { <------><------>lp->fast_poll--; <------><------>lp->media.expires = jiffies + HZ/100; <------><------>add_timer(&lp->media); <------><------>return; <------>} <------>/* lp->lock guards the EL3 window. Window should always be 1 except <------> * when the lock is held <------> */ <------>spin_lock_irqsave(&lp->lock, flags); <------>EL3WINDOW(4); <------>media = inw(ioaddr+WN4_MEDIA) & 0xc810; <------>/* Ignore collisions unless we've had no irq's recently */ <------>if (time_before(jiffies, lp->last_irq + HZ)) { <------><------>media &= ~0x0010; <------>} else { <------><------>/* Try harder to detect carrier errors */ <------><------>EL3WINDOW(6); <------><------>outw(StatsDisable, ioaddr + EL3_CMD); <------><------>errs = inb(ioaddr + 0); <------><------>outw(StatsEnable, ioaddr + EL3_CMD); <------><------>dev->stats.tx_carrier_errors += errs; <------><------>if (errs || (lp->media_status & 0x0010)) <------><------><------>media |= 0x0010; <------>} <------>if (media != lp->media_status) { <------><------>if ((media & lp->media_status & 0x8000) && <------><------><------><------>((lp->media_status ^ media) & 0x0800)) <------><------>netdev_info(dev, "%s link beat\n", <------><------><------><------>(lp->media_status & 0x0800 ? "lost" : "found")); <------><------>else if ((media & lp->media_status & 0x4000) && <------><------> ((lp->media_status ^ media) & 0x0010)) <------><------>netdev_info(dev, "coax cable %s\n", <------><------><------><------>(lp->media_status & 0x0010 ? "ok" : "problem")); <------><------>if (dev->if_port == 0) { <------><------><------>if (media & 0x8000) { <------><------><------><------>if (media & 0x0800) <------><------><------><------><------>netdev_info(dev, "flipped to 10baseT\n"); <------><------><------><------>else <------><------><------>tc589_set_xcvr(dev, 2); <------><------><------>} else if (media & 0x4000) { <------><------><------><------>if (media & 0x0010) <------><------><------><------><------>tc589_set_xcvr(dev, 1); <------><------><------><------>else <------><------><------><------><------>netdev_info(dev, "flipped to 10base2\n"); <------><------><------>} <------><------>} <------><------>lp->media_status = media; <------>} <------>EL3WINDOW(1); <------>spin_unlock_irqrestore(&lp->lock, flags); reschedule: <------>lp->media.expires = jiffies + HZ; <------>add_timer(&lp->media); } static struct net_device_stats *el3_get_stats(struct net_device *dev) { <------>struct el3_private *lp = netdev_priv(dev); <------>unsigned long flags; <------>struct pcmcia_device *link = lp->p_dev; <------>if (pcmcia_dev_present(link)) { <------><------>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. * * Caller must hold the lock for this */ static void update_stats(struct net_device *dev) { <------>unsigned int ioaddr = dev->base_addr; <------>netdev_dbg(dev, "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); <------>/* Rx octets */ <------>inw(ioaddr + 10); <------>/* 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) { <------>unsigned int ioaddr = dev->base_addr; <------>int worklimit = 32; <------>short rx_status; <------>netdev_dbg(dev, "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)) & 0x8000) && <------><------> worklimit > 0) { <------><------>worklimit--; <------><------>if (rx_status & 0x4000) { /* Error, update stats. */ <------><------><------>short error = rx_status & 0x3800; <------><------><------>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); <------><------><------>netdev_dbg(dev, " Receiving packet size %d status %4.4x.\n", <------><------> pkt_len, rx_status); <------><------><------>if (skb != NULL) { <------><------><------><------>skb_reserve(skb, 2); <------><------><------><------>insl(ioaddr+RX_FIFO, skb_put(skb, pkt_len), <------><------><------>(pkt_len+3)>>2); <------><------><------><------>skb->protocol = eth_type_trans(skb, dev); <------><------><------><------>netif_rx(skb); <------><------><------><------>dev->stats.rx_packets++; <------><------><------><------>dev->stats.rx_bytes += pkt_len; <------><------><------>} else { <------><------><------><------>netdev_dbg(dev, "couldn't allocate a sk_buff of size %d.\n", <------><------><------> pkt_len); <------><------><------><------>dev->stats.rx_dropped++; <------><------><------>} <------><------>} <------><------>/* Pop the top of the Rx FIFO */ <------><------>tc589_wait_for_completion(dev, RxDiscard); <------>} <------>if (worklimit == 0) <------><------>netdev_warn(dev, "too much work in el3_rx!\n"); <------>return 0; } static void set_rx_mode(struct net_device *dev) { <------>unsigned int ioaddr = dev->base_addr; <------>u16 opts = SetRxFilter | RxStation | RxBroadcast; <------>if (dev->flags & IFF_PROMISC) <------><------>opts |= RxMulticast | RxProm; <------>else if (!netdev_mc_empty(dev) || (dev->flags & IFF_ALLMULTI)) <------><------>opts |= RxMulticast; <------>outw(opts, ioaddr + EL3_CMD); } static void set_multicast_list(struct net_device *dev) { <------>struct el3_private *priv = netdev_priv(dev); <------>unsigned long flags; <------>spin_lock_irqsave(&priv->lock, flags); <------>set_rx_mode(dev); <------>spin_unlock_irqrestore(&priv->lock, flags); } static int el3_close(struct net_device *dev) { <------>struct el3_private *lp = netdev_priv(dev); <------>struct pcmcia_device *link = lp->p_dev; <------>unsigned int ioaddr = dev->base_addr; <------>dev_dbg(&link->dev, "%s: shutting down ethercard.\n", dev->name); <------>if (pcmcia_dev_present(link)) { <------><------>/* Turn off statistics ASAP. We update dev->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 == 2) <------><------><------>/* Turn off thinnet power. Green! */ <------><------><------>outw(StopCoax, ioaddr + EL3_CMD); <------><------>else if (dev->if_port == 1) { <------><------><------>/* Disable link beat and jabber */ <------><------><------>EL3WINDOW(4); <------><------><------>outw(0, ioaddr + WN4_MEDIA); <------><------>} <------><------>/* Switching back to window 0 disables the IRQ. */ <------><------>EL3WINDOW(0); <------><------>/* But we explicitly zero the IRQ line select anyway. */ <------><------>outw(0x0f00, ioaddr + WN0_IRQ); <------><------>/* Check if the card still exists */ <------><------>if ((inw(ioaddr+EL3_STATUS) & 0xe000) == 0x2000) <------><------><------>update_stats(dev); <------>} <------>link->open--; <------>netif_stop_queue(dev); <------>del_timer_sync(&lp->media); <------>return 0; } static const struct pcmcia_device_id tc589_ids[] = { <------>PCMCIA_MFC_DEVICE_MANF_CARD(0, 0x0101, 0x0562), <------>PCMCIA_MFC_DEVICE_PROD_ID1(0, "Motorola MARQUIS", 0xf03e4e77), <------>PCMCIA_DEVICE_MANF_CARD(0x0101, 0x0589), <------>PCMCIA_DEVICE_PROD_ID12("Farallon", "ENet", 0x58d93fc4, 0x992c2202), <------>PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x0035, "cis/3CXEM556.cis"), <------>PCMCIA_MFC_DEVICE_CIS_MANF_CARD(0, 0x0101, 0x003d, "cis/3CXEM556.cis"), <------>PCMCIA_DEVICE_NULL, }; MODULE_DEVICE_TABLE(pcmcia, tc589_ids); static struct pcmcia_driver tc589_driver = { <------>.owner = THIS_MODULE, <------>.name = "3c589_cs", <------>.probe = tc589_probe, <------>.remove = tc589_detach, <------>.id_table = tc589_ids, <------>.suspend = tc589_suspend, <------>.resume = tc589_resume, }; module_pcmcia_driver(tc589_driver);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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