| /* at1700.c: A network device driver for the Allied Telesis AT1700. |
| |
| Written 1993 by Donald Becker. This is a alpha test limited release. |
| This version may only be used and distributed according to the terms of the |
| GNU Public License, incorporated herein by reference. |
| |
| The author may be reached as becker@super.org or |
| C/O Supercomputing Research Ctr., 17100 Science Dr., Bowie MD 20715 |
| |
| This is a device driver for the Allied Telesis AT1700, which is a |
| straight-foward Fujitsu MB86965 implementation. |
| */ |
| |
| static char *version = |
| "at1700.c:v0.05 2/9/94 Donald Becker (becker@super.org)\n"; |
| |
| #include <linux/config.h> |
| |
| /* |
| Sources: |
| The Fujitsu MB86695 datasheet. |
| |
| After this driver was written, ATI provided their EEPROM configuration |
| code header file. Thanks to Gerry Sockins of ATI. |
| */ |
| |
| #include <linux/kernel.h> |
| #include <linux/sched.h> |
| #include <linux/types.h> |
| #include <linux/fcntl.h> |
| #include <linux/interrupt.h> |
| #include <linux/ptrace.h> |
| #include <linux/ioport.h> |
| #include <linux/in.h> |
| #include <linux/malloc.h> |
| #include <linux/string.h> |
| #include <asm/system.h> |
| #include <asm/bitops.h> |
| #include <asm/io.h> |
| #include <asm/dma.h> |
| #include <errno.h> |
| |
| #include "dev.h" |
| #include "eth.h" |
| #include "skbuff.h" |
| #include "arp.h" |
| |
| #ifndef HAVE_AUTOIRQ |
| /* From auto_irq.c, in ioport.h for later versions. */ |
| extern void autoirq_setup(int waittime); |
| extern int autoirq_report(int waittime); |
| /* The map from IRQ number (as passed to the interrupt handler) to |
| 'struct device'. */ |
| extern struct device *irq2dev_map[16]; |
| #endif |
| |
| #ifndef HAVE_ALLOC_SKB |
| #define alloc_skb(size, priority) (struct sk_buff *) kmalloc(size,priority) |
| #define kfree_skbmem(addr, size) kfree_s(addr,size); |
| #endif |
| |
| /* use 0 for production, 1 for verification, >2 for debug */ |
| #ifndef NET_DEBUG |
| #define NET_DEBUG 2 |
| #endif |
| static unsigned int net_debug = NET_DEBUG; |
| |
| typedef unsigned char uchar; |
| |
| /* Information that need to be kept for each board. */ |
| struct net_local { |
| struct enet_statistics stats; |
| long open_time; /* Useless example local info. */ |
| uint tx_started:1; /* Number of packet on the Tx queue. */ |
| uchar tx_queue; /* Number of packet on the Tx queue. */ |
| ushort tx_queue_len; /* Current length of the Tx queue. */ |
| }; |
| |
| |
| /* Offsets from the base address. */ |
| #define STATUS 0 |
| #define TX_STATUS 0 |
| #define RX_STATUS 1 |
| #define TX_INTR 2 /* Bit-mapped interrupt enable registers. */ |
| #define RX_INTR 3 |
| #define TX_MODE 4 |
| #define RX_MODE 5 |
| #define CONFIG_0 6 /* Misc. configuration settings. */ |
| #define CONFIG_1 7 |
| /* Run-time register bank 2 definitions. */ |
| #define DATAPORT 8 /* Word-wide DMA or programmed-I/O dataport. */ |
| #define TX_START 10 |
| #define MODE13 13 |
| #define EEPROM_Ctrl 16 |
| #define EEPROM_Data 17 |
| |
| /* EEPROM_Ctrl bits. */ |
| #define EE_SHIFT_CLK 0x40 /* EEPROM shift clock, in reg. 16. */ |
| #define EE_CS 0x20 /* EEPROM chip select, in reg. 16. */ |
| #define EE_DATA_WRITE 0x80 /* EEPROM chip data in, in reg. 17. */ |
| #define EE_DATA_READ 0x80 /* EEPROM chip data out, in reg. 17. */ |
| |
| /* Delay between EEPROM clock transitions. */ |
| #define eeprom_delay() do { int _i = 40; while (--_i > 0) { __SLOW_DOWN_IO; }} while (0) |
| |
| /* The EEPROM commands include the alway-set leading bit. */ |
| #define EE_WRITE_CMD (5 << 6) |
| #define EE_READ_CMD (6 << 6) |
| #define EE_ERASE_CMD (7 << 6) |
| |
| |
| /* Index to functions, as function prototypes. */ |
| |
| extern int at1700_probe(struct device *dev); |
| |
| static int at1700_probe1(struct device *dev, short ioaddr); |
| static int read_eeprom(int ioaddr, int location); |
| static int net_open(struct device *dev); |
| static int net_send_packet(struct sk_buff *skb, struct device *dev); |
| static void net_interrupt(int reg_ptr); |
| static void net_rx(struct device *dev); |
| static int net_close(struct device *dev); |
| static struct enet_statistics *net_get_stats(struct device *dev); |
| #ifdef HAVE_MULTICAST |
| static void set_multicast_list(struct device *dev, int num_addrs, void *addrs); |
| #endif |
| |
| |
| /* Check for a network adaptor of this type, and return '0' iff one exists. |
| If dev->base_addr == 0, probe all likely locations. |
| If dev->base_addr == 1, always return failure. |
| If dev->base_addr == 2, alloate space for the device and return success |
| (detachable devices only). |
| */ |
| int |
| at1700_probe(struct device *dev) |
| { |
| short ports[] = {0x300, 0x280, 0x380, 0x320, 0x340, 0x260, 0x2a0, 0x240, 0}; |
| short *port, base_addr = dev->base_addr; |
| |
| if (base_addr > 0x1ff) /* Check a single specified location. */ |
| return at1700_probe1(dev, base_addr); |
| else if (base_addr > 0) /* Don't probe at all. */ |
| return ENXIO; |
| |
| for (port = &ports[0]; *port; port++) { |
| int ioaddr = *port; |
| if (check_region(ioaddr, 32)) |
| continue; |
| if (at1700_probe1(dev, ioaddr) == 0) |
| return 0; |
| } |
| |
| return ENODEV; |
| } |
| |
| /* The Fujitsu datasheet suggests that the NIC be probed for by checking its |
| "signature", the default bit pattern after a reset. This *doesn't* work -- |
| there is no way to reset the bus interface without a complete power-cycle! |
| |
| It turns out that ATI came to the same conclusion I did: the only thing |
| that can be done is checking a few bits and then diving right into an |
| EEPROM read. */ |
| |
| int at1700_probe1(struct device *dev, short ioaddr) |
| { |
| unsigned short signature[4] = {0xffff, 0xffff, 0x7ff7, 0xff5f}; |
| unsigned short signature_invalid[4] = {0xffff, 0xffff, 0x7ff7, 0xdf0f}; |
| char irqmap[8] = {3, 4, 5, 9, 10, 11, 14, 15}; |
| unsigned short *station_address = (unsigned short *)dev->dev_addr; |
| unsigned int i, irq; |
| |
| /* Resetting the chip doesn't reset the ISA interface, so don't bother. |
| That means we have to be careful with the register values we probe for. |
| */ |
| for (i = 0; i < 4; i++) |
| if ((inw(ioaddr + 2*i) | signature_invalid[i]) != signature[i]) { |
| if (net_debug > 2) |
| printk("AT1700 signature match failed at %d (%04x vs. %04x)\n", |
| i, inw(ioaddr + 2*i), signature[i]); |
| return -ENODEV; |
| } |
| if (read_eeprom(ioaddr, 4) != 0x0000 |
| || read_eeprom(ioaddr, 5) & 0x00ff != 0x00F4) |
| return -ENODEV; |
| |
| /* Grab the region so that we can find another board if the IRQ request |
| fails. */ |
| snarf_region(ioaddr, 32); |
| |
| irq = irqmap[(read_eeprom(ioaddr, 12)&0x04) |
| | (read_eeprom(ioaddr, 0)>>14)]; |
| |
| /* Snarf the interrupt vector now. */ |
| if (request_irq(irq, &net_interrupt)) { |
| printk ("AT1700 found at %#3x, but it's unusable due to a conflict on" |
| "IRQ %d.\n", ioaddr, irq); |
| return EAGAIN; |
| } |
| |
| printk("%s: AT1700 found at %#3x, IRQ %d, address ", dev->name, |
| ioaddr, irq); |
| |
| dev->base_addr = ioaddr; |
| dev->irq = irq; |
| irq2dev_map[irq] = dev; |
| |
| for(i = 0; i < 3; i++) { |
| unsigned short eeprom_val = read_eeprom(ioaddr, 4+i); |
| printk("%04x", eeprom_val); |
| station_address[i] = ntohs(eeprom_val); |
| } |
| |
| /* The EEPROM word 12 bit 0x0400 means use regular 100 ohm 10baseT signals, |
| rather than 150 ohm shielded twisted pair compansation. |
| 0x0000 == auto-sense the interface |
| 0x0800 == use TP interface |
| 0x1800 == use coax interface |
| */ |
| { |
| char *porttype[] = {"auto-sense", "10baseT", "auto-sense", "10base2"}; |
| ushort setup_value = read_eeprom(ioaddr, 12); |
| |
| dev->if_port = setup_value >> 8; |
| printk(" %s interface (%04x).\n", porttype[(dev->if_port>>3) & 3], |
| setup_value); |
| } |
| |
| /* Set the station address in bank zero. */ |
| outb(0xe0, ioaddr + 7); |
| for (i = 0; i < 6; i++) |
| outb(dev->dev_addr[i], ioaddr + 8 + i); |
| |
| /* Switch to bank 1 and set the multicast table to accept none. */ |
| outb(0xe4, ioaddr + 7); |
| for (i = 0; i < 8; i++) |
| outb(0x00, ioaddr + 8 + i); |
| |
| /* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit |
| bus access, two 4K Tx queues, and disabled Tx and Rx. */ |
| outb(0xda, ioaddr + CONFIG_0); |
| |
| /* Switch to bank 2 and lock our I/O address. */ |
| outb(0xe8, ioaddr + 7); |
| outb(dev->if_port, MODE13); |
| |
| /* Power-down the chip. Aren't we green! */ |
| outb(0x00, ioaddr + CONFIG_1); |
| |
| if (net_debug) |
| printk(version); |
| |
| /* Initialize the device structure. */ |
| dev->priv = kmalloc(sizeof(struct net_local), GFP_KERNEL); |
| memset(dev->priv, 0, sizeof(struct net_local)); |
| |
| dev->open = net_open; |
| dev->stop = net_close; |
| dev->hard_start_xmit = net_send_packet; |
| dev->get_stats = net_get_stats; |
| #ifdef HAVE_MULTICAST |
| dev->set_multicast_list = &set_multicast_list; |
| #endif |
| |
| /* Fill in the fields of the device structure with ethernet-generic values. |
| This should be in a common file instead of per-driver. */ |
| for (i = 0; i < DEV_NUMBUFFS; i++) |
| dev->buffs[i] = NULL; |
| |
| dev->hard_header = eth_header; |
| dev->add_arp = eth_add_arp; |
| dev->queue_xmit = dev_queue_xmit; |
| dev->rebuild_header = eth_rebuild_header; |
| dev->type_trans = eth_type_trans; |
| |
| dev->type = ARPHRD_ETHER; |
| dev->hard_header_len = ETH_HLEN; |
| dev->mtu = 1500; /* eth_mtu */ |
| dev->addr_len = ETH_ALEN; |
| for (i = 0; i < ETH_ALEN; i++) { |
| dev->broadcast[i]=0xff; |
| } |
| |
| /* New-style flags. */ |
| dev->flags = IFF_BROADCAST; |
| dev->family = AF_INET; |
| dev->pa_addr = 0; |
| dev->pa_brdaddr = 0; |
| dev->pa_mask = 0; |
| dev->pa_alen = sizeof(unsigned long); |
| |
| return 0; |
| } |
| |
| static int read_eeprom(int ioaddr, int location) |
| { |
| int i; |
| unsigned short retval = 0; |
| short ee_addr = ioaddr + EEPROM_Ctrl; |
| short ee_daddr = ioaddr + EEPROM_Data; |
| int read_cmd = location | EE_READ_CMD; |
| short ctrl_val = EE_CS; |
| |
| outb(ctrl_val, ee_addr); |
| |
| /* Shift the read command bits out. */ |
| for (i = 9; i >= 0; i--) { |
| short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0; |
| outb(dataval, ee_daddr); |
| outb(EE_CS | EE_SHIFT_CLK, ee_addr); /* EEPROM clock tick. */ |
| eeprom_delay(); |
| outb(EE_CS, ee_addr); /* Finish EEPROM a clock tick. */ |
| eeprom_delay(); |
| } |
| outb(EE_CS, ee_addr); |
| |
| for (i = 16; i > 0; i--) { |
| outb(EE_CS | EE_SHIFT_CLK, ee_addr); |
| eeprom_delay(); |
| retval = (retval << 1) | ((inb(ee_daddr) & EE_DATA_READ) ? 1 : 0); |
| outb(EE_CS, ee_addr); |
| eeprom_delay(); |
| } |
| |
| /* Terminate the EEPROM access. */ |
| ctrl_val &= ~EE_CS; |
| outb(ctrl_val | EE_SHIFT_CLK, ee_addr); |
| eeprom_delay(); |
| outb(ctrl_val, ee_addr); |
| eeprom_delay(); |
| return retval; |
| } |
| |
| |
| |
| static int net_open(struct device *dev) |
| { |
| struct net_local *lp = (struct net_local *)dev->priv; |
| int ioaddr = dev->base_addr; |
| int i; |
| |
| /* Powerup the chip, initialize config register 1, and select bank 0. */ |
| outb(0xe0, ioaddr + CONFIG_1); |
| |
| /* Set the station address in bank zero. */ |
| for (i = 0; i < 6; i++) |
| outb(dev->dev_addr[i], ioaddr + 8 + i); |
| |
| /* Switch to bank 1 and set the multicast table to accept none. */ |
| outb(0xe4, ioaddr + 7); |
| for (i = 0; i < 8; i++) |
| outb(0x00, ioaddr + 8 + i); |
| |
| /* Set the configuration register 0 to 32K 100ns. byte-wide memory, 16 bit |
| bus access, and two 4K Tx queues. */ |
| outb(0xda, ioaddr + CONFIG_0); |
| |
| /* Same config 0, except enable the Rx and Tx. */ |
| outb(0x5a, ioaddr + CONFIG_0); |
| /* Switch to register bank 2 for the run-time registers. */ |
| outb(0xe8, ioaddr + CONFIG_1); |
| |
| /* Turn on Rx interrupts, leave Tx interrupts off until packet Tx. */ |
| outb(0x00, ioaddr + TX_INTR); |
| outb(0x81, ioaddr + RX_INTR); |
| |
| lp->open_time = jiffies; |
| |
| dev->tbusy = 0; |
| dev->interrupt = 0; |
| dev->start = 1; |
| |
| return 0; |
| } |
| |
| static int |
| net_send_packet(struct sk_buff *skb, struct device *dev) |
| { |
| struct net_local *lp = (struct net_local *)dev->priv; |
| int ioaddr = dev->base_addr; |
| |
| if (dev->tbusy) { |
| /* If we get here, some higher level has decided we are broken. |
| There should really be a "kick me" function call instead. */ |
| int tickssofar = jiffies - dev->trans_start; |
| if (tickssofar < 10) |
| return 1; |
| printk("%s: transmit timed out with status %04x, %s?\n", dev->name, |
| inw(ioaddr + STATUS), inb(ioaddr + TX_STATUS) & 0x80 |
| ? "IRQ conflict" : "network cable problem"); |
| printk("%s: timeout registers: %04x %04x %04x %04x %04x %04x %04x %04x.\n", |
| dev->name, inw(ioaddr + 0), inw(ioaddr + 2), inw(ioaddr + 4), |
| inw(ioaddr + 6), inw(ioaddr + 8), inw(ioaddr + 10), |
| inw(ioaddr + 12), inw(ioaddr + 14)); |
| lp->stats.tx_errors++; |
| /* ToDo: We should try to restart the adaptor... */ |
| outw(0xffff, ioaddr + 24); |
| outw(0xffff, ioaddr + TX_STATUS); |
| outw(0xe85a, ioaddr + CONFIG_0); |
| outw(0x8100, ioaddr + TX_INTR); |
| dev->tbusy=0; |
| dev->trans_start = jiffies; |
| } |
| |
| /* If some higher layer thinks we've missed an tx-done interrupt |
| we are passed NULL. Caution: dev_tint() handles the cli()/sti() |
| itself. */ |
| if (skb == NULL) { |
| dev_tint(dev); |
| return 0; |
| } |
| |
| /* For ethernet, fill in the header. This should really be done by a |
| higher level, rather than duplicated for each ethernet adaptor. */ |
| if (!skb->arp && dev->rebuild_header(skb+1, dev)) { |
| skb->dev = dev; |
| arp_queue (skb); |
| return 0; |
| } |
| skb->arp=1; |
| |
| /* Block a timer-based transmit from overlapping. This could better be |
| done with atomic_swap(1, dev->tbusy), but set_bit() works as well. */ |
| if (set_bit(0, (void*)&dev->tbusy) != 0) |
| printk("%s: Transmitter access conflict.\n", dev->name); |
| else { |
| short length = ETH_ZLEN < skb->len ? skb->len : ETH_ZLEN; |
| unsigned char *buf = (void *)(skb+1); |
| |
| if (net_debug > 4) |
| printk("%s: Transmitting a packet of length %d.\n", dev->name, |
| skb->len); |
| |
| /* Turn off the possible Tx interrupts. */ |
| outb(0x00, ioaddr + TX_INTR); |
| |
| outw(length, ioaddr + DATAPORT); |
| outsw(ioaddr + DATAPORT, buf, (length + 1) >> 1); |
| |
| lp->tx_queue++; |
| lp->tx_queue_len += length + 2; |
| |
| if (lp->tx_started == 0) { |
| /* If the Tx is idle, always trigger a transmit. */ |
| outb(0x80 | lp->tx_queue, ioaddr + TX_START); |
| lp->tx_queue = 0; |
| lp->tx_queue_len = 0; |
| dev->trans_start = jiffies; |
| lp->tx_started = 1; |
| } else if (lp->tx_queue_len < 4096 - 1502) /* Room for one more packet? */ |
| dev->tbusy = 0; |
| |
| /* Turn on Tx interrupts back on. */ |
| outb(0x82, ioaddr + TX_INTR); |
| } |
| if (skb->free) |
| kfree_skb (skb, FREE_WRITE); |
| |
| return 0; |
| } |
| |
| /* The typical workload of the driver: |
| Handle the network interface interrupts. */ |
| static void |
| net_interrupt(int reg_ptr) |
| { |
| int irq = -(((struct pt_regs *)reg_ptr)->orig_eax+2); |
| struct device *dev = (struct device *)(irq2dev_map[irq]); |
| struct net_local *lp; |
| int ioaddr, status; |
| |
| if (dev == NULL) { |
| printk ("at1700_interrupt(): irq %d for unknown device.\n", irq); |
| return; |
| } |
| dev->interrupt = 1; |
| |
| ioaddr = dev->base_addr; |
| lp = (struct net_local *)dev->priv; |
| status = inw(ioaddr + TX_STATUS); |
| outw(status, ioaddr + TX_STATUS); |
| |
| if (net_debug > 4) |
| printk("%s: Interrupt with status %04x.\n", dev->name, status); |
| if (status & 0xff00 |
| || (inb(ioaddr + RX_MODE) & 0x40) == 0) { /* Got a packet(s). */ |
| net_rx(dev); |
| } |
| if (status & 0x00ff) { |
| if (status & 0x80) { |
| lp->stats.tx_packets++; |
| if (lp->tx_queue) { |
| outb(0x80 | lp->tx_queue, ioaddr + TX_START); |
| lp->tx_queue = 0; |
| lp->tx_queue_len = 0; |
| dev->trans_start = jiffies; |
| dev->tbusy = 0; |
| mark_bh(INET_BH); /* Inform upper layers. */ |
| } else { |
| lp->tx_started = 0; |
| /* Turn on Tx interrupts off. */ |
| outb(0x00, ioaddr + TX_INTR); |
| dev->tbusy = 0; |
| } |
| } |
| } |
| |
| return; |
| } |
| |
| /* We have a good packet(s), get it/them out of the buffers. */ |
| static void |
| net_rx(struct device *dev) |
| { |
| struct net_local *lp = (struct net_local *)dev->priv; |
| int ioaddr = dev->base_addr; |
| int boguscount = 5; |
| |
| while ((inb(ioaddr + RX_MODE) & 0x40) == 0) { |
| ushort status = inw(ioaddr + DATAPORT); |
| |
| if (net_debug > 4) |
| printk("%s: Rxing packet mode %02x status %04x.\n", |
| dev->name, inb(ioaddr + RX_MODE), status); |
| #ifndef final_version |
| if (status == 0) { |
| outb(0x05, ioaddr + 14); |
| break; |
| } |
| #endif |
| |
| if ((status & 0xF0) != 0x20) { /* There was an error. */ |
| lp->stats.rx_errors++; |
| if (status & 0x08) lp->stats.rx_length_errors++; |
| if (status & 0x04) lp->stats.rx_frame_errors++; |
| if (status & 0x02) lp->stats.rx_crc_errors++; |
| if (status & 0x01) lp->stats.rx_over_errors++; |
| } else { |
| ushort pkt_len = inw(ioaddr + DATAPORT); |
| /* Malloc up new buffer. */ |
| int sksize = sizeof(struct sk_buff) + pkt_len; |
| struct sk_buff *skb; |
| |
| if (pkt_len > 1550) { |
| printk("%s: The AT1700 claimed a very large packet, size %d.\n", |
| dev->name, pkt_len); |
| outb(0x05, ioaddr + 14); |
| lp->stats.rx_errors++; |
| break; |
| } |
| skb = alloc_skb(sksize, GFP_ATOMIC); |
| if (skb == NULL) { |
| printk("%s: Memory squeeze, dropping packet (len %d).\n", |
| dev->name, pkt_len); |
| outb(0x05, ioaddr + 14); |
| lp->stats.rx_dropped++; |
| break; |
| } |
| skb->mem_len = sksize; |
| skb->mem_addr = skb; |
| skb->len = pkt_len; |
| skb->dev = dev; |
| |
| /* 'skb+1' points to the start of sk_buff data area. */ |
| insw(ioaddr + DATAPORT, (void *)(skb+1), (pkt_len + 1) >> 1); |
| |
| if (net_debug > 5) { |
| int i; |
| printk("%s: Rxed packet of length %d: ", dev->name, pkt_len); |
| for (i = 0; i < 14; i++) |
| printk(" %02x", ((unsigned char*)(skb + 1))[i]); |
| printk(".\n"); |
| } |
| |
| #ifdef HAVE_NETIF_RX |
| netif_rx(skb); |
| #else |
| skb->lock = 0; |
| if (dev_rint((unsigned char*)skb, pkt_len, IN_SKBUFF, dev) != 0) { |
| kfree_s(skb, sksize); |
| lp->stats.rx_dropped++; |
| break; |
| } |
| #endif |
| lp->stats.rx_packets++; |
| } |
| if (--boguscount <= 0) |
| break; |
| } |
| |
| /* If any worth-while packets have been received, dev_rint() |
| has done a mark_bh(INET_BH) for us and will work on them |
| when we get to the bottom-half routine. */ |
| { |
| int i; |
| for (i = 0; i < 20; i++) { |
| if ((inb(ioaddr + RX_MODE) & 0x40) == 0x40) |
| break; |
| outb(0x05, ioaddr + 14); |
| } |
| |
| if (net_debug > 5) |
| printk("%s: Exint Rx packet with mode %02x after %d ticks.\n", |
| dev->name, inb(ioaddr + RX_MODE), i); |
| } |
| return; |
| } |
| |
| /* The inverse routine to net_open(). */ |
| static int net_close(struct device *dev) |
| { |
| struct net_local *lp = (struct net_local *)dev->priv; |
| int ioaddr = dev->base_addr; |
| |
| lp->open_time = 0; |
| |
| dev->tbusy = 1; |
| dev->start = 0; |
| |
| /* Set configuration register 0 to disable Tx and Rx. */ |
| outb(0xda, ioaddr + CONFIG_0); |
| |
| /* Update the statistics -- ToDo. */ |
| |
| /* Power-down the chip. Green, green, green! */ |
| outb(0x00, ioaddr + CONFIG_1); |
| |
| return 0; |
| } |
| |
| /* Get the current statistics. This may be called with the card open or |
| closed. */ |
| static struct enet_statistics * |
| net_get_stats(struct device *dev) |
| { |
| struct net_local *lp = (struct net_local *)dev->priv; |
| |
| cli(); |
| /* ToDo: Update the statistics from the device registers. */ |
| sti(); |
| |
| return &lp->stats; |
| } |
| |
| #ifdef HAVE_MULTICAST |
| /* Set or clear the multicast filter for this adaptor. |
| num_addrs == -1 Promiscuous mode, receive all packets |
| num_addrs == 0 Normal mode, clear multicast list |
| num_addrs > 0 Multicast mode, receive normal and MC packets, and do |
| best-effort filtering. |
| */ |
| static void |
| set_multicast_list(struct device *dev, int num_addrs, void *addrs) |
| { |
| short ioaddr = dev->base_addr; |
| if (num_addrs) { |
| outw(3, ioaddr + RX_MODE); /* Enable promiscuous mode */ |
| } else |
| outw(2, ioaddr + RX_MODE); /* Disable promiscuous, use normal mode */ |
| } |
| #endif |
| |
| /* |
| * Local variables: |
| * compile-command: "gcc -D__KERNEL__ -I/usr/src/linux/net/inet -Wall -Wstrict-prototypes -O6 -m486 -c at1700.c" |
| * version-control: t |
| * kept-new-versions: 5 |
| * tab-width: 4 |
| * End: |
| */ |