// SPDX-License-Identifier: GPL-2.0-only /* * linux/drivers/acorn/net/ether3.c * * Copyright (C) 1995-2000 Russell King * * SEEQ nq8005 ethernet driver for Acorn/ANT Ether3 card * for Acorn machines * * By Russell King, with some suggestions from borris@ant.co.uk * * Changelog: * 1.04 RMK 29/02/1996 Won't pass packets that are from our ethernet * address up to the higher levels - they're * silently ignored. I/F can now be put into * multicast mode. Receiver routine optimised. * 1.05 RMK 30/02/1996 Now claims interrupt at open when part of * the kernel rather than when a module. * 1.06 RMK 02/03/1996 Various code cleanups * 1.07 RMK 13/10/1996 Optimised interrupt routine and transmit * routines. * 1.08 RMK 14/10/1996 Fixed problem with too many packets, * prevented the kernel message about dropped * packets appearing too many times a second. * Now does not disable all IRQs, only the IRQ * used by this card. * 1.09 RMK 10/11/1996 Only enables TX irq when buffer space is low, * but we still service the TX queue if we get a * RX interrupt. * 1.10 RMK 15/07/1997 Fixed autoprobing of NQ8004. * 1.11 RMK 16/11/1997 Fixed autoprobing of NQ8005A. * 1.12 RMK 31/12/1997 Removed reference to dev_tint for Linux 2.1. * RMK 27/06/1998 Changed asm/delay.h to linux/delay.h. * 1.13 RMK 29/06/1998 Fixed problem with transmission of packets. * Chip seems to have a bug in, whereby if the * packet starts two bytes from the end of the * buffer, it corrupts the receiver chain, and * never updates the transmit status correctly. * 1.14 RMK 07/01/1998 Added initial code for ETHERB addressing. * 1.15 RMK 30/04/1999 More fixes to the transmit routine for buggy * hardware. * 1.16 RMK 10/02/2000 Updated for 2.3.43 * 1.17 RMK 13/05/2000 Updated for 2.3.99-pre8 */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static char version[] = "ether3 ethernet driver (c) 1995-2000 R.M.King v1.17\n"; #include "ether3.h" static unsigned int net_debug = NET_DEBUG; static void ether3_setmulticastlist(struct net_device *dev); static int ether3_rx(struct net_device *dev, unsigned int maxcnt); static void ether3_tx(struct net_device *dev); static int ether3_open (struct net_device *dev); static netdev_tx_t ether3_sendpacket(struct sk_buff *skb, struct net_device *dev); static irqreturn_t ether3_interrupt (int irq, void *dev_id); static int ether3_close (struct net_device *dev); static void ether3_setmulticastlist (struct net_device *dev); static void ether3_timeout(struct net_device *dev, unsigned int txqueue); #define BUS_16 2 #define BUS_8 1 #define BUS_UNKNOWN 0 /* --------------------------------------------------------------------------- */ typedef enum { buffer_write, buffer_read } buffer_rw_t; /* * ether3 read/write. Slow things down a bit... * The SEEQ8005 doesn't like us writing to its registers * too quickly. */ static inline void ether3_outb(int v, void __iomem *r) { writeb(v, r); udelay(1); } static inline void ether3_outw(int v, void __iomem *r) { writew(v, r); udelay(1); } #define ether3_inb(r) ({ unsigned int __v = readb((r)); udelay(1); __v; }) #define ether3_inw(r) ({ unsigned int __v = readw((r)); udelay(1); __v; }) static int ether3_setbuffer(struct net_device *dev, buffer_rw_t read, int start) { int timeout = 1000; ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND); while ((ether3_inw(REG_STATUS) & STAT_FIFOEMPTY) == 0) { if (!timeout--) { printk("%s: setbuffer broken\n", dev->name); priv(dev)->broken = 1; return 1; } udelay(1); } if (read == buffer_read) { ether3_outw(start, REG_DMAADDR); ether3_outw(priv(dev)->regs.command | CMD_FIFOREAD, REG_COMMAND); } else { ether3_outw(priv(dev)->regs.command | CMD_FIFOWRITE, REG_COMMAND); ether3_outw(start, REG_DMAADDR); } return 0; } /* * write data to the buffer memory */ #define ether3_writebuffer(dev,data,length) \ writesw(REG_BUFWIN, (data), (length) >> 1) #define ether3_writeword(dev,data) \ writew((data), REG_BUFWIN) #define ether3_writelong(dev,data) { \ void __iomem *reg_bufwin = REG_BUFWIN; \ writew((data), reg_bufwin); \ writew((data) >> 16, reg_bufwin); \ } /* * read data from the buffer memory */ #define ether3_readbuffer(dev,data,length) \ readsw(REG_BUFWIN, (data), (length) >> 1) #define ether3_readword(dev) \ readw(REG_BUFWIN) #define ether3_readlong(dev) \ readw(REG_BUFWIN) | (readw(REG_BUFWIN) << 16) /* * Switch LED off... */ static void ether3_ledoff(struct timer_list *t) { struct dev_priv *private = from_timer(private, t, timer); struct net_device *dev = private->dev; ether3_outw(priv(dev)->regs.config2 |= CFG2_CTRLO, REG_CONFIG2); } /* * switch LED on... */ static inline void ether3_ledon(struct net_device *dev) { del_timer(&priv(dev)->timer); priv(dev)->timer.expires = jiffies + HZ / 50; /* leave on for 1/50th second */ add_timer(&priv(dev)->timer); if (priv(dev)->regs.config2 & CFG2_CTRLO) ether3_outw(priv(dev)->regs.config2 &= ~CFG2_CTRLO, REG_CONFIG2); } /* * Read the ethernet address string from the on board rom. * This is an ascii string!!! */ static int ether3_addr(char *addr, struct expansion_card *ec) { struct in_chunk_dir cd; char *s; if (ecard_readchunk(&cd, ec, 0xf5, 0) && (s = strchr(cd.d.string, '('))) { int i; for (i = 0; i<6; i++) { addr[i] = simple_strtoul(s + 1, &s, 0x10); if (*s != (i==5?')' : ':' )) break; } if (i == 6) return 0; } /* I wonder if we should even let the user continue in this case * - no, it would be better to disable the device */ printk(KERN_ERR "ether3: Couldn't read a valid MAC address from card.\n"); return -ENODEV; } /* --------------------------------------------------------------------------- */ static int ether3_ramtest(struct net_device *dev, unsigned char byte) { unsigned char *buffer = kmalloc(RX_END, GFP_KERNEL); int i,ret = 0; int max_errors = 4; int bad = -1; if (!buffer) return 1; memset(buffer, byte, RX_END); ether3_setbuffer(dev, buffer_write, 0); ether3_writebuffer(dev, buffer, TX_END); ether3_setbuffer(dev, buffer_write, RX_START); ether3_writebuffer(dev, buffer + RX_START, RX_LEN); memset(buffer, byte ^ 0xff, RX_END); ether3_setbuffer(dev, buffer_read, 0); ether3_readbuffer(dev, buffer, TX_END); ether3_setbuffer(dev, buffer_read, RX_START); ether3_readbuffer(dev, buffer + RX_START, RX_LEN); for (i = 0; i < RX_END; i++) { if (buffer[i] != byte) { if (max_errors > 0 && bad != buffer[i]) { printk("%s: RAM failed with (%02X instead of %02X) at 0x%04X", dev->name, buffer[i], byte, i); ret = 2; max_errors--; bad = i; } } else { if (bad != -1) { if (bad != i - 1) printk(" - 0x%04X\n", i - 1); printk("\n"); bad = -1; } } } if (bad != -1) printk(" - 0xffff\n"); kfree(buffer); return ret; } /* ------------------------------------------------------------------------------- */ static int ether3_init_2(struct net_device *dev) { int i; priv(dev)->regs.config1 = CFG1_RECVCOMPSTAT0|CFG1_DMABURST8; priv(dev)->regs.config2 = CFG2_CTRLO|CFG2_RECVCRC|CFG2_ERRENCRC; priv(dev)->regs.command = 0; /* * Set up our hardware address */ ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1); for (i = 0; i < 6; i++) ether3_outb(dev->dev_addr[i], REG_BUFWIN); if (dev->flags & IFF_PROMISC) priv(dev)->regs.config1 |= CFG1_RECVPROMISC; else if (dev->flags & IFF_MULTICAST) priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI; else priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD; /* * There is a problem with the NQ8005 in that it occasionally loses the * last two bytes. To get round this problem, we receive the CRC as * well. That way, if we do lose the last two, then it doesn't matter. */ ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1); ether3_outw((TX_END>>8) - 1, REG_BUFWIN); ether3_outw(priv(dev)->rx_head, REG_RECVPTR); ether3_outw(0, REG_TRANSMITPTR); ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND); ether3_outw(priv(dev)->regs.config2, REG_CONFIG2); ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); ether3_outw(priv(dev)->regs.command, REG_COMMAND); i = ether3_ramtest(dev, 0x5A); if(i) return i; i = ether3_ramtest(dev, 0x1E); if(i) return i; ether3_setbuffer(dev, buffer_write, 0); ether3_writelong(dev, 0); return 0; } static void ether3_init_for_open(struct net_device *dev) { int i; /* Reset the chip */ ether3_outw(CFG2_RESET, REG_CONFIG2); udelay(4); priv(dev)->regs.command = 0; ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND); while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON)) barrier(); ether3_outw(priv(dev)->regs.config1 | CFG1_BUFSELSTAT0, REG_CONFIG1); for (i = 0; i < 6; i++) ether3_outb(dev->dev_addr[i], REG_BUFWIN); priv(dev)->tx_head = 0; priv(dev)->tx_tail = 0; priv(dev)->regs.config2 |= CFG2_CTRLO; priv(dev)->rx_head = RX_START; ether3_outw(priv(dev)->regs.config1 | CFG1_TRANSEND, REG_CONFIG1); ether3_outw((TX_END>>8) - 1, REG_BUFWIN); ether3_outw(priv(dev)->rx_head, REG_RECVPTR); ether3_outw(priv(dev)->rx_head >> 8, REG_RECVEND); ether3_outw(0, REG_TRANSMITPTR); ether3_outw(priv(dev)->regs.config2, REG_CONFIG2); ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); ether3_setbuffer(dev, buffer_write, 0); ether3_writelong(dev, 0); priv(dev)->regs.command = CMD_ENINTRX | CMD_ENINTTX; ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND); } static inline int ether3_probe_bus_8(struct net_device *dev, int val) { int write_low, write_high, read_low, read_high; write_low = val & 255; write_high = val >> 8; printk(KERN_DEBUG "ether3_probe: write8 [%02X:%02X]", write_high, write_low); ether3_outb(write_low, REG_RECVPTR); ether3_outb(write_high, REG_RECVPTR + 4); read_low = ether3_inb(REG_RECVPTR); read_high = ether3_inb(REG_RECVPTR + 4); printk(", read8 [%02X:%02X]\n", read_high, read_low); return read_low == write_low && read_high == write_high; } static inline int ether3_probe_bus_16(struct net_device *dev, int val) { int read_val; ether3_outw(val, REG_RECVPTR); read_val = ether3_inw(REG_RECVPTR); printk(KERN_DEBUG "ether3_probe: write16 [%04X], read16 [%04X]\n", val, read_val); return read_val == val; } /* * Open/initialize the board. This is called (in the current kernel) * sometime after booting when the 'ifconfig' program is run. * * This routine should set everything up anew at each open, even * registers that "should" only need to be set once at boot, so that * there is non-reboot way to recover if something goes wrong. */ static int ether3_open(struct net_device *dev) { if (request_irq(dev->irq, ether3_interrupt, 0, "ether3", dev)) return -EAGAIN; ether3_init_for_open(dev); netif_start_queue(dev); return 0; } /* * The inverse routine to ether3_open(). */ static int ether3_close(struct net_device *dev) { netif_stop_queue(dev); disable_irq(dev->irq); ether3_outw(CMD_RXOFF|CMD_TXOFF, REG_COMMAND); priv(dev)->regs.command = 0; while (ether3_inw(REG_STATUS) & (STAT_RXON|STAT_TXON)) barrier(); ether3_outb(0x80, REG_CONFIG2 + 4); ether3_outw(0, REG_COMMAND); free_irq(dev->irq, dev); return 0; } /* * Set or clear promiscuous/multicast mode filter for this adaptor. * * We don't attempt any packet filtering. The card may have a SEEQ 8004 * in which does not have the other ethernet address registers present... */ static void ether3_setmulticastlist(struct net_device *dev) { priv(dev)->regs.config1 &= ~CFG1_RECVPROMISC; if (dev->flags & IFF_PROMISC) { /* promiscuous mode */ priv(dev)->regs.config1 |= CFG1_RECVPROMISC; } else if (dev->flags & IFF_ALLMULTI || !netdev_mc_empty(dev)) { priv(dev)->regs.config1 |= CFG1_RECVSPECBRMULTI; } else priv(dev)->regs.config1 |= CFG1_RECVSPECBROAD; ether3_outw(priv(dev)->regs.config1 | CFG1_LOCBUFMEM, REG_CONFIG1); } static void ether3_timeout(struct net_device *dev, unsigned int txqueue) { unsigned long flags; del_timer(&priv(dev)->timer); local_irq_save(flags); printk(KERN_ERR "%s: transmit timed out, network cable problem?\n", dev->name); printk(KERN_ERR "%s: state: { status=%04X cfg1=%04X cfg2=%04X }\n", dev->name, ether3_inw(REG_STATUS), ether3_inw(REG_CONFIG1), ether3_inw(REG_CONFIG2)); printk(KERN_ERR "%s: { rpr=%04X rea=%04X tpr=%04X }\n", dev->name, ether3_inw(REG_RECVPTR), ether3_inw(REG_RECVEND), ether3_inw(REG_TRANSMITPTR)); printk(KERN_ERR "%s: tx head=%X tx tail=%X\n", dev->name, priv(dev)->tx_head, priv(dev)->tx_tail); ether3_setbuffer(dev, buffer_read, priv(dev)->tx_tail); printk(KERN_ERR "%s: packet status = %08X\n", dev->name, ether3_readlong(dev)); local_irq_restore(flags); priv(dev)->regs.config2 |= CFG2_CTRLO; dev->stats.tx_errors += 1; ether3_outw(priv(dev)->regs.config2, REG_CONFIG2); priv(dev)->tx_head = priv(dev)->tx_tail = 0; netif_wake_queue(dev); } /* * Transmit a packet */ static netdev_tx_t ether3_sendpacket(struct sk_buff *skb, struct net_device *dev) { unsigned long flags; unsigned int length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; unsigned int ptr, next_ptr; if (priv(dev)->broken) { dev_kfree_skb(skb); dev->stats.tx_dropped++; netif_start_queue(dev); return NETDEV_TX_OK; } length = (length + 1) & ~1; if (length != skb->len) { if (skb_padto(skb, length)) goto out; } next_ptr = (priv(dev)->tx_head + 1) & 15; local_irq_save(flags); if (priv(dev)->tx_tail == next_ptr) { local_irq_restore(flags); return NETDEV_TX_BUSY; /* unable to queue */ } ptr = 0x600 * priv(dev)->tx_head; priv(dev)->tx_head = next_ptr; next_ptr *= 0x600; #define TXHDR_FLAGS (TXHDR_TRANSMIT|TXHDR_CHAINCONTINUE|TXHDR_DATAFOLLOWS|TXHDR_ENSUCCESS) ether3_setbuffer(dev, buffer_write, next_ptr); ether3_writelong(dev, 0); ether3_setbuffer(dev, buffer_write, ptr); ether3_writelong(dev, 0); ether3_writebuffer(dev, skb->data, length); ether3_writeword(dev, htons(next_ptr)); ether3_writeword(dev, TXHDR_CHAINCONTINUE >> 16); ether3_setbuffer(dev, buffer_write, ptr); ether3_writeword(dev, htons((ptr + length + 4))); ether3_writeword(dev, TXHDR_FLAGS >> 16); ether3_ledon(dev); if (!(ether3_inw(REG_STATUS) & STAT_TXON)) { ether3_outw(ptr, REG_TRANSMITPTR); ether3_outw(priv(dev)->regs.command | CMD_TXON, REG_COMMAND); } next_ptr = (priv(dev)->tx_head + 1) & 15; local_irq_restore(flags); dev_kfree_skb(skb); if (priv(dev)->tx_tail == next_ptr) netif_stop_queue(dev); out: return NETDEV_TX_OK; } static irqreturn_t ether3_interrupt(int irq, void *dev_id) { struct net_device *dev = (struct net_device *)dev_id; unsigned int status, handled = IRQ_NONE; #if NET_DEBUG > 1 if(net_debug & DEBUG_INT) printk("eth3irq: %d ", irq); #endif status = ether3_inw(REG_STATUS); if (status & STAT_INTRX) { ether3_outw(CMD_ACKINTRX | priv(dev)->regs.command, REG_COMMAND); ether3_rx(dev, 12); handled = IRQ_HANDLED; } if (status & STAT_INTTX) { ether3_outw(CMD_ACKINTTX | priv(dev)->regs.command, REG_COMMAND); ether3_tx(dev); handled = IRQ_HANDLED; } #if NET_DEBUG > 1 if(net_debug & DEBUG_INT) printk("done\n"); #endif return handled; } /* * If we have a good packet(s), get it/them out of the buffers. */ static int ether3_rx(struct net_device *dev, unsigned int maxcnt) { unsigned int next_ptr = priv(dev)->rx_head, received = 0; ether3_ledon(dev); do { unsigned int this_ptr, status; unsigned char addrs[16]; /* * read the first 16 bytes from the buffer. * This contains the status bytes etc and ethernet addresses, * and we also check the source ethernet address to see if * it originated from us. */ { unsigned int temp_ptr; ether3_setbuffer(dev, buffer_read, next_ptr); temp_ptr = ether3_readword(dev); status = ether3_readword(dev); if ((status & (RXSTAT_DONE | RXHDR_CHAINCONTINUE | RXHDR_RECEIVE)) != (RXSTAT_DONE | RXHDR_CHAINCONTINUE) || !temp_ptr) break; this_ptr = next_ptr + 4; next_ptr = ntohs(temp_ptr); } ether3_setbuffer(dev, buffer_read, this_ptr); ether3_readbuffer(dev, addrs+2, 12); if (next_ptr < RX_START || next_ptr >= RX_END) { printk("%s: bad next pointer @%04X: ", dev->name, priv(dev)->rx_head); printk("%02X %02X %02X %02X ", next_ptr >> 8, next_ptr & 255, status & 255, status >> 8); printk("%pM %pM\n", addrs + 2, addrs + 8); next_ptr = priv(dev)->rx_head; break; } /* * ignore our own packets... */ if (!(*(unsigned long *)&dev->dev_addr[0] ^ *(unsigned long *)&addrs[2+6]) && !(*(unsigned short *)&dev->dev_addr[4] ^ *(unsigned short *)&addrs[2+10])) { maxcnt ++; /* compensate for loopedback packet */ ether3_outw(next_ptr >> 8, REG_RECVEND); } else if (!(status & (RXSTAT_OVERSIZE|RXSTAT_CRCERROR|RXSTAT_DRIBBLEERROR|RXSTAT_SHORTPACKET))) { unsigned int length = next_ptr - this_ptr; struct sk_buff *skb; if (next_ptr <= this_ptr) length += RX_END - RX_START; skb = netdev_alloc_skb(dev, length + 2); if (skb) { unsigned char *buf; skb_reserve(skb, 2); buf = skb_put(skb, length); ether3_readbuffer(dev, buf + 12, length - 12); ether3_outw(next_ptr >> 8, REG_RECVEND); *(unsigned short *)(buf + 0) = *(unsigned short *)(addrs + 2); *(unsigned long *)(buf + 2) = *(unsigned long *)(addrs + 4); *(unsigned long *)(buf + 6) = *(unsigned long *)(addrs + 8); *(unsigned short *)(buf + 10) = *(unsigned short *)(addrs + 12); skb->protocol = eth_type_trans(skb, dev); netif_rx(skb); received ++; } else { ether3_outw(next_ptr >> 8, REG_RECVEND); dev->stats.rx_dropped++; goto done; } } else { struct net_device_stats *stats = &dev->stats; ether3_outw(next_ptr >> 8, REG_RECVEND); if (status & RXSTAT_OVERSIZE) stats->rx_over_errors ++; if (status & RXSTAT_CRCERROR) stats->rx_crc_errors ++; if (status & RXSTAT_DRIBBLEERROR) stats->rx_fifo_errors ++; if (status & RXSTAT_SHORTPACKET) stats->rx_length_errors ++; stats->rx_errors++; } } while (-- maxcnt); done: dev->stats.rx_packets += received; priv(dev)->rx_head = next_ptr; /* * If rx went off line, then that means that the buffer may be full. We * have dropped at least one packet. */ if (!(ether3_inw(REG_STATUS) & STAT_RXON)) { dev->stats.rx_dropped++; ether3_outw(next_ptr, REG_RECVPTR); ether3_outw(priv(dev)->regs.command | CMD_RXON, REG_COMMAND); } return maxcnt; } /* * Update stats for the transmitted packet(s) */ static void ether3_tx(struct net_device *dev) { unsigned int tx_tail = priv(dev)->tx_tail; int max_work = 14; do { unsigned long status; /* * Read the packet header */ ether3_setbuffer(dev, buffer_read, tx_tail * 0x600); status = ether3_readlong(dev); /* * Check to see if this packet has been transmitted */ if ((status & (TXSTAT_DONE | TXHDR_TRANSMIT)) != (TXSTAT_DONE | TXHDR_TRANSMIT)) break; /* * Update errors */ if (!(status & (TXSTAT_BABBLED | TXSTAT_16COLLISIONS))) dev->stats.tx_packets++; else { dev->stats.tx_errors++; if (status & TXSTAT_16COLLISIONS) dev->stats.collisions += 16; if (status & TXSTAT_BABBLED) dev->stats.tx_fifo_errors++; } tx_tail = (tx_tail + 1) & 15; } while (--max_work); if (priv(dev)->tx_tail != tx_tail) { priv(dev)->tx_tail = tx_tail; netif_wake_queue(dev); } } static void ether3_banner(void) { static unsigned version_printed = 0; if (net_debug && version_printed++ == 0) printk(KERN_INFO "%s", version); } static const struct net_device_ops ether3_netdev_ops = { .ndo_open = ether3_open, .ndo_stop = ether3_close, .ndo_start_xmit = ether3_sendpacket, .ndo_set_rx_mode = ether3_setmulticastlist, .ndo_tx_timeout = ether3_timeout, .ndo_validate_addr = eth_validate_addr, .ndo_set_mac_address = eth_mac_addr, }; static int ether3_probe(struct expansion_card *ec, const struct ecard_id *id) { const struct ether3_data *data = id->data; struct net_device *dev; int bus_type, ret; u8 addr[ETH_ALEN]; ether3_banner(); ret = ecard_request_resources(ec); if (ret) goto out; dev = alloc_etherdev(sizeof(struct dev_priv)); if (!dev) { ret = -ENOMEM; goto release; } SET_NETDEV_DEV(dev, &ec->dev); priv(dev)->base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0); if (!priv(dev)->base) { ret = -ENOMEM; goto free; } ec->irqaddr = priv(dev)->base + data->base_offset; ec->irqmask = 0xf0; priv(dev)->seeq = priv(dev)->base + data->base_offset; dev->irq = ec->irq; ether3_addr(addr, ec); eth_hw_addr_set(dev, addr); priv(dev)->dev = dev; timer_setup(&priv(dev)->timer, ether3_ledoff, 0); /* Reset card... */ ether3_outb(0x80, REG_CONFIG2 + 4); bus_type = BUS_UNKNOWN; udelay(4); /* Test using Receive Pointer (16-bit register) to find out * how the ether3 is connected to the bus... */ if (ether3_probe_bus_8(dev, 0x100) && ether3_probe_bus_8(dev, 0x201)) bus_type = BUS_8; if (bus_type == BUS_UNKNOWN && ether3_probe_bus_16(dev, 0x101) && ether3_probe_bus_16(dev, 0x201)) bus_type = BUS_16; switch (bus_type) { case BUS_UNKNOWN: printk(KERN_ERR "%s: unable to identify bus width\n", dev->name); ret = -ENODEV; goto free; case BUS_8: printk(KERN_ERR "%s: %s found, but is an unsupported " "8-bit card\n", dev->name, data->name); ret = -ENODEV; goto free; default: break; } if (ether3_init_2(dev)) { ret = -ENODEV; goto free; } dev->netdev_ops = ðer3_netdev_ops; dev->watchdog_timeo = 5 * HZ / 100; ret = register_netdev(dev); if (ret) goto free; printk("%s: %s in slot %d, %pM\n", dev->name, data->name, ec->slot_no, dev->dev_addr); ecard_set_drvdata(ec, dev); return 0; free: free_netdev(dev); release: ecard_release_resources(ec); out: return ret; } static void ether3_remove(struct expansion_card *ec) { struct net_device *dev = ecard_get_drvdata(ec); ecard_set_drvdata(ec, NULL); unregister_netdev(dev); free_netdev(dev); ecard_release_resources(ec); } static struct ether3_data ether3 = { .name = "ether3", .base_offset = 0, }; static struct ether3_data etherb = { .name = "etherb", .base_offset = 0x800, }; static const struct ecard_id ether3_ids[] = { { MANU_ANT2, PROD_ANT_ETHER3, ðer3 }, { MANU_ANT, PROD_ANT_ETHER3, ðer3 }, { MANU_ANT, PROD_ANT_ETHERB, ðerb }, { 0xffff, 0xffff } }; static struct ecard_driver ether3_driver = { .probe = ether3_probe, .remove = ether3_remove, .id_table = ether3_ids, .drv = { .name = "ether3", }, }; static int __init ether3_init(void) { return ecard_register_driver(ðer3_driver); } static void __exit ether3_exit(void) { ecard_remove_driver(ðer3_driver); } module_init(ether3_init); module_exit(ether3_exit); MODULE_LICENSE("GPL");