/* * We have a good packet, get it out of the adapter. */ static void de600_rx_intr(struct net_device *dev) { struct sk_buff *skb; int i; int read_from; int size; unsigned char *buffer; /* Get size of received packet */ size = de600_read_byte(RX_LEN, dev); /* low byte */ size += (de600_read_byte(RX_LEN, dev) << 8); /* high byte */ size -= 4; /* Ignore trailing 4 CRC-bytes */ /* Tell adapter where to store next incoming packet, enable receiver */ read_from = rx_page_adr(); next_rx_page(); de600_put_command(RX_ENABLE); if ((size < 32) || (size > 1535)) { printk(KERN_WARNING "%s: Bogus packet size %d.\n", dev->name, size); if (size > 10000) adapter_init(dev); return; } skb = dev_alloc_skb(size+2); if (skb == NULL) { printk("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, size); return; } /* else */ skb->dev = dev; skb_reserve(skb,2); /* Align */ /* 'skb->data' points to the start of sk_buff data area. */ buffer = skb_put(skb,size); /* copy the packet into the buffer */ de600_setup_address(read_from, RW_ADDR); for (i = size; i > 0; --i, ++buffer) *buffer = de600_read_byte(READ_DATA, dev); skb->protocol=eth_type_trans(skb,dev); netif_rx(skb); /* update stats */ dev->last_rx = jiffies; ((struct net_device_stats *)(dev->priv))->rx_packets++; /* count all receives */ ((struct net_device_stats *)(dev->priv))->rx_bytes += size; /* count all received bytes */ /* * If any worth-while packets have been received, netif_rx() * will work on them when we get to the tasklets. */ }
/* * We have a good packet, get it out of the adapter. */ static void de600_rx_intr(struct device *dev) { struct sk_buff *skb; int i; int read_from; int size; register unsigned char *buffer; cli(); /* Get size of received packet */ size = de600_read_byte(RX_LEN, dev); /* low byte */ size += (de600_read_byte(RX_LEN, dev) << 8); /* high byte */ size -= 4; /* Ignore trailing 4 CRC-bytes */ /* Tell adapter where to store next incoming packet, enable receiver */ read_from = rx_page_adr(); next_rx_page(); de600_put_command(RX_ENABLE); sti(); if ((size < 32) || (size > 1535)) { printk("%s: Bogus packet size %d.\n", dev->name, size); if (size > 10000) adapter_init(dev); return; } skb = alloc_skb(size, GFP_ATOMIC); sti(); if (skb == NULL) { printk("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, size); return; } /* else */ skb->lock = 0; /* 'skb->data' points to the start of sk_buff data area. */ buffer = skb->data; /* copy the packet into the buffer */ de600_setup_address(read_from, RW_ADDR); for (i = size; i > 0; --i, ++buffer) *buffer = de600_read_byte(READ_DATA, dev); ((struct netstats *)(dev->priv))->rx_packets++; /* count all receives */ if (dev_rint((unsigned char *)skb, size, IN_SKBUFF, dev)) printk("%s: receive buffers full.\n", dev->name); /* * 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. */ }
static void de600_rx_intr(struct net_device *dev) { struct sk_buff *skb; int i; int read_from; int size; unsigned char *buffer; /* */ size = de600_read_byte(RX_LEN, dev); /* */ size += (de600_read_byte(RX_LEN, dev) << 8); /* */ size -= 4; /* */ /* */ read_from = rx_page_adr(); next_rx_page(); de600_put_command(RX_ENABLE); if ((size < 32) || (size > 1535)) { printk(KERN_WARNING "%s: Bogus packet size %d.\n", dev->name, size); if (size > 10000) adapter_init(dev); return; } skb = netdev_alloc_skb(dev, size + 2); if (skb == NULL) { printk("%s: Couldn't allocate a sk_buff of size %d.\n", dev->name, size); return; } /* */ skb_reserve(skb,2); /* */ /* */ buffer = skb_put(skb,size); /* */ de600_setup_address(read_from, RW_ADDR); for (i = size; i > 0; --i, ++buffer) *buffer = de600_read_byte(READ_DATA, dev); skb->protocol=eth_type_trans(skb,dev); netif_rx(skb); /* */ dev->stats.rx_packets++; /* */ dev->stats.rx_bytes += size; /* */ /* */ }
static int adapter_init(struct net_device *dev) { int i; select_nic(); rx_page = 0; /* used by RESET */ de600_put_command(RESET); de600_put_command(STOP_RESET); /* Check if it is still there... */ /* Get the some bytes of the adapter ethernet address from the ROM */ de600_setup_address(NODE_ADDRESS, RW_ADDR); de600_read_byte(READ_DATA, dev); if ((de600_read_byte(READ_DATA, dev) != 0xde) || (de600_read_byte(READ_DATA, dev) != 0x15)) { /* was: if (de600_read_status(dev) & 0xf0) { */ printk("Something has happened to the DE-600! Please check it and do a new ifconfig!\n"); /* Goodbye, cruel world... */ dev->flags &= ~IFF_UP; de600_close(dev); was_down = 1; netif_stop_queue(dev); /* Transmit busy... */ return 1; /* failed */ } if (was_down) { printk(KERN_INFO "%s: Thanks, I feel much better now!\n", dev->name); was_down = 0; } tx_fifo_in = 0; tx_fifo_out = 0; free_tx_pages = TX_PAGES; /* set the ether address. */ de600_setup_address(NODE_ADDRESS, RW_ADDR); for (i = 0; i < ETH_ALEN; i++) de600_put_byte(dev->dev_addr[i]); /* where to start saving incoming packets */ rx_page = RX_BP | RX_BASE_PAGE; de600_setup_address(MEM_4K, RW_ADDR); /* Enable receiver */ de600_put_command(RX_ENABLE); select_prn(); netif_start_queue(dev); return 0; /* OK */ }
static int adapter_init(struct net_device *dev) { int i; select_nic(); rx_page = 0; de600_put_command(RESET); de600_put_command(STOP_RESET); de600_setup_address(NODE_ADDRESS, RW_ADDR); de600_read_byte(READ_DATA, dev); if ((de600_read_byte(READ_DATA, dev) != 0xde) || (de600_read_byte(READ_DATA, dev) != 0x15)) { printk("Something has happened to the DE-600! Please check it and do a new ifconfig!\n"); dev->flags &= ~IFF_UP; de600_close(dev); was_down = 1; netif_stop_queue(dev); return 1; } if (was_down) { printk(KERN_INFO "%s: Thanks, I feel much better now!\n", dev->name); was_down = 0; } tx_fifo_in = 0; tx_fifo_out = 0; free_tx_pages = TX_PAGES; de600_setup_address(NODE_ADDRESS, RW_ADDR); for (i = 0; i < ETH_ALEN; i++) de600_put_byte(dev->dev_addr[i]); rx_page = RX_BP | RX_BASE_PAGE; de600_setup_address(MEM_4K, RW_ADDR); de600_put_command(RX_ENABLE); select_prn(); netif_start_queue(dev); return 0; }
static struct net_device * __init de600_probe(void) { int i; struct net_device *dev; int err; dev = alloc_etherdev(sizeof(struct net_device_stats)); if (!dev) return ERR_PTR(-ENOMEM); SET_MODULE_OWNER(dev); if (!request_region(DE600_IO, 3, "de600")) { printk(KERN_WARNING "DE600: port 0x%x busy\n", DE600_IO); err = -EBUSY; goto out; } printk(KERN_INFO "%s: D-Link DE-600 pocket adapter", dev->name); /* Alpha testers must have the version number to report bugs. */ if (de600_debug > 1) printk(version); /* probe for adapter */ err = -ENODEV; rx_page = 0; select_nic(); (void)de600_read_status(dev); de600_put_command(RESET); de600_put_command(STOP_RESET); if (de600_read_status(dev) & 0xf0) { printk(": not at I/O %#3x.\n", DATA_PORT); goto out1; } /* * Maybe we found one, * have to check if it is a D-Link DE-600 adapter... */ /* Get the adapter ethernet address from the ROM */ de600_setup_address(NODE_ADDRESS, RW_ADDR); for (i = 0; i < ETH_ALEN; i++) { dev->dev_addr[i] = de600_read_byte(READ_DATA, dev); dev->broadcast[i] = 0xff; } /* Check magic code */ if ((dev->dev_addr[1] == 0xde) && (dev->dev_addr[2] == 0x15)) { /* OK, install real address */ dev->dev_addr[0] = 0x00; dev->dev_addr[1] = 0x80; dev->dev_addr[2] = 0xc8; dev->dev_addr[3] &= 0x0f; dev->dev_addr[3] |= 0x70; } else { printk(" not identified in the printer port\n"); goto out1; } printk(", Ethernet Address: %02X", dev->dev_addr[0]); for (i = 1; i < ETH_ALEN; i++) printk(":%02X",dev->dev_addr[i]); printk("\n"); dev->get_stats = get_stats; dev->open = de600_open; dev->stop = de600_close; dev->hard_start_xmit = &de600_start_xmit; dev->flags&=~IFF_MULTICAST; select_prn(); err = register_netdev(dev); if (err) goto out1; return dev; out1: release_region(DE600_IO, 3); out: free_netdev(dev); return ERR_PTR(err); }
static int de600_start_xmit(struct sk_buff *skb, struct net_device *dev) { unsigned long flags; int transmit_from; int len; int tickssofar; u8 *buffer = skb->data; int i; if (free_tx_pages <= 0) { /* Do timeouts, to avoid hangs. */ tickssofar = jiffies - dev->trans_start; if (tickssofar < 5) return 1; /* else */ printk(KERN_WARNING "%s: transmit timed out (%d), %s?\n", dev->name, tickssofar, "network cable problem"); /* Restart the adapter. */ spin_lock_irqsave(&de600_lock, flags); if (adapter_init(dev)) { spin_unlock_irqrestore(&de600_lock, flags); return 1; } spin_unlock_irqrestore(&de600_lock, flags); } /* Start real output */ PRINTK(("de600_start_xmit:len=%d, page %d/%d\n", skb->len, tx_fifo_in, free_tx_pages)); if ((len = skb->len) < RUNT) len = RUNT; spin_lock_irqsave(&de600_lock, flags); select_nic(); tx_fifo[tx_fifo_in] = transmit_from = tx_page_adr(tx_fifo_in) - len; tx_fifo_in = (tx_fifo_in + 1) % TX_PAGES; /* Next free tx page */ if(check_lost) { /* This costs about 40 instructions per packet... */ de600_setup_address(NODE_ADDRESS, RW_ADDR); de600_read_byte(READ_DATA, dev); if (was_down || (de600_read_byte(READ_DATA, dev) != 0xde)) { if (adapter_init(dev)) { spin_unlock_irqrestore(&de600_lock, flags); return 1; } } } de600_setup_address(transmit_from, RW_ADDR); for (i = 0; i < skb->len ; ++i, ++buffer) de600_put_byte(*buffer); for (; i < len; ++i) de600_put_byte(0); if (free_tx_pages-- == TX_PAGES) { /* No transmission going on */ dev->trans_start = jiffies; netif_start_queue(dev); /* allow more packets into adapter */ /* Send page and generate a faked interrupt */ de600_setup_address(transmit_from, TX_ADDR); de600_put_command(TX_ENABLE); } else { if (free_tx_pages) netif_start_queue(dev); else netif_stop_queue(dev); select_prn(); } spin_unlock_irqrestore(&de600_lock, flags); dev_kfree_skb(skb); return 0; }
int __init de600_probe(struct net_device *dev) { int i; static struct net_device_stats de600_netstats; /*dev->priv = kmalloc(sizeof(struct net_device_stats), GFP_KERNEL);*/ SET_MODULE_OWNER(dev); printk("%s: D-Link DE-600 pocket adapter", dev->name); /* Alpha testers must have the version number to report bugs. */ if (de600_debug > 1) printk(version); /* probe for adapter */ rx_page = 0; select_nic(); (void)de600_read_status(dev); de600_put_command(RESET); de600_put_command(STOP_RESET); if (de600_read_status(dev) & 0xf0) { printk(": not at I/O %#3x.\n", DATA_PORT); return -ENODEV; } /* * Maybe we found one, * have to check if it is a D-Link DE-600 adapter... */ /* Get the adapter ethernet address from the ROM */ de600_setup_address(NODE_ADDRESS, RW_ADDR); for (i = 0; i < ETH_ALEN; i++) { dev->dev_addr[i] = de600_read_byte(READ_DATA, dev); dev->broadcast[i] = 0xff; } /* Check magic code */ if ((dev->dev_addr[1] == 0xde) && (dev->dev_addr[2] == 0x15)) { /* OK, install real address */ dev->dev_addr[0] = 0x00; dev->dev_addr[1] = 0x80; dev->dev_addr[2] = 0xc8; dev->dev_addr[3] &= 0x0f; dev->dev_addr[3] |= 0x70; } else { printk(" not identified in the printer port\n"); return -ENODEV; } #if 0 /* Not yet */ if (check_region(DE600_IO, 3)) { printk(", port 0x%x busy\n", DE600_IO); return -EBUSY; } #endif request_region(DE600_IO, 3, "de600"); printk(", Ethernet Address: %02X", dev->dev_addr[0]); for (i = 1; i < ETH_ALEN; i++) printk(":%02X",dev->dev_addr[i]); printk("\n"); /* Initialize the device structure. */ dev->priv = &de600_netstats; memset(dev->priv, 0, sizeof(struct net_device_stats)); dev->get_stats = get_stats; dev->open = de600_open; dev->stop = de600_close; dev->hard_start_xmit = &de600_start_xmit; ether_setup(dev); dev->flags&=~IFF_MULTICAST; select_prn(); return 0; }
/* * Copy a buffer to the adapter transmit page memory. * Start sending. */ static int de600_start_xmit(struct sk_buff *skb, struct net_device *dev) { unsigned long flags; int transmit_from; int len; int tickssofar; byte *buffer = skb->data; if (free_tx_pages <= 0) { /* Do timeouts, to avoid hangs. */ tickssofar = jiffies - dev->trans_start; if (tickssofar < 5) return 1; /* else */ printk("%s: transmit timed out (%d), %s?\n", dev->name, tickssofar, "network cable problem" ); /* Restart the adapter. */ if (adapter_init(dev)) { return 1; } } /* Start real output */ PRINTK(("de600_start_xmit:len=%d, page %d/%d\n", skb->len, tx_fifo_in, free_tx_pages)); if ((len = skb->len) < RUNT) len = RUNT; save_flags(flags); cli(); select_nic(); tx_fifo[tx_fifo_in] = transmit_from = tx_page_adr(tx_fifo_in) - len; tx_fifo_in = (tx_fifo_in + 1) % TX_PAGES; /* Next free tx page */ #ifdef CHECK_LOST_DE600 /* This costs about 40 instructions per packet... */ de600_setup_address(NODE_ADDRESS, RW_ADDR); de600_read_byte(READ_DATA, dev); if (was_down || (de600_read_byte(READ_DATA, dev) != 0xde)) { if (adapter_init(dev)) { restore_flags(flags); return 1; } } #endif de600_setup_address(transmit_from, RW_ADDR); for ( ; len > 0; --len, ++buffer) de600_put_byte(*buffer); if (free_tx_pages-- == TX_PAGES) { /* No transmission going on */ dev->trans_start = jiffies; netif_start_queue(dev); /* allow more packets into adapter */ /* Send page and generate a faked interrupt */ de600_setup_address(transmit_from, TX_ADDR); de600_put_command(TX_ENABLE); } else { if (free_tx_pages) netif_start_queue(dev); else netif_stop_queue(dev); select_prn(); } restore_flags(flags); #ifdef FAKE_SMALL_MAX /* This will "patch" the socket TCP proto at an early moment */ if (skb->sk && (skb->sk->protocol == IPPROTO_TCP) && (skb->sk->prot->rspace != &de600_rspace)) skb->sk->prot->rspace = de600_rspace; /* Ugh! */ #endif dev_kfree_skb (skb); return 0; }
static int adapter_init(struct device *dev) { int i; long flags; save_flags(flags); cli(); select_nic(); rx_page = 0; /* used by RESET */ de600_put_command(RESET); de600_put_command(STOP_RESET); #ifdef CHECK_LOST_DE600 /* Check if it is still there... */ /* Get the some bytes of the adapter ethernet address from the ROM */ de600_setup_address(NODE_ADDRESS, RW_ADDR); de600_read_byte(READ_DATA, dev); if ((de600_read_byte(READ_DATA, dev) != 0xde) || (de600_read_byte(READ_DATA, dev) != 0x15)) { /* was: if (de600_read_status(dev) & 0xf0) { */ printk("Something has happened to the DE-600! Please check it" #ifdef SHUTDOWN_WHEN_LOST " and do a new ifconfig" #endif /* SHUTDOWN_WHEN_LOST */ "!\n"); #ifdef SHUTDOWN_WHEN_LOST /* Goodbye, cruel world... */ dev->flags &= ~IFF_UP; de600_close(dev); #endif /* SHUTDOWN_WHEN_LOST */ was_down = 1; dev->tbusy = 1; /* Transmit busy... */ return 1; /* failed */ } #endif /* CHECK_LOST_DE600 */ if (was_down) { printk("Thanks, I feel much better now!\n"); was_down = 0; } dev->tbusy = 0; /* Transmit busy... */ dev->interrupt = 0; tx_fifo_in = 0; tx_fifo_out = 0; free_tx_pages = TX_PAGES; /* set the ether address. */ de600_setup_address(NODE_ADDRESS, RW_ADDR); for (i = 0; i < ETH_ALEN; i++) de600_put_byte(dev->dev_addr[i]); /* where to start saving incoming packets */ rx_page = RX_BP | RX_BASE_PAGE; de600_setup_address(MEM_4K, RW_ADDR); /* Enable receiver */ de600_put_command(RX_ENABLE); select_prn(); restore_flags(flags); return 0; /* OK */ }
static struct net_device * __init de600_probe(void) { int i; struct net_device *dev; int err; dev = alloc_etherdev(0); if (!dev) return ERR_PTR(-ENOMEM); if (!request_region(DE600_IO, 3, "de600")) { printk(KERN_WARNING "DE600: port 0x%x busy\n", DE600_IO); err = -EBUSY; goto out; } printk(KERN_INFO "%s: D-Link DE-600 pocket adapter", dev->name); pr_debug("%s", version); err = -ENODEV; rx_page = 0; select_nic(); (void)de600_read_status(dev); de600_put_command(RESET); de600_put_command(STOP_RESET); if (de600_read_status(dev) & 0xf0) { printk(": not at I/O %#3x.\n", DATA_PORT); goto out1; } de600_setup_address(NODE_ADDRESS, RW_ADDR); for (i = 0; i < ETH_ALEN; i++) { dev->dev_addr[i] = de600_read_byte(READ_DATA, dev); dev->broadcast[i] = 0xff; } if ((dev->dev_addr[1] == 0xde) && (dev->dev_addr[2] == 0x15)) { dev->dev_addr[0] = 0x00; dev->dev_addr[1] = 0x80; dev->dev_addr[2] = 0xc8; dev->dev_addr[3] &= 0x0f; dev->dev_addr[3] |= 0x70; } else { printk(" not identified in the printer port\n"); goto out1; } printk(", Ethernet Address: %pM\n", dev->dev_addr); dev->netdev_ops = &de600_netdev_ops; dev->flags&=~IFF_MULTICAST; select_prn(); err = register_netdev(dev); if (err) goto out1; return dev; out1: release_region(DE600_IO, 3); out: free_netdev(dev); return ERR_PTR(err); }
static int de600_start_xmit(struct sk_buff *skb, struct net_device *dev) { unsigned long flags; int transmit_from; int len; int tickssofar; u8 *buffer = skb->data; int i; if (free_tx_pages <= 0) { tickssofar = jiffies - dev->trans_start; if (tickssofar < 5) return NETDEV_TX_BUSY; printk(KERN_WARNING "%s: transmit timed out (%d), %s?\n", dev->name, tickssofar, "network cable problem"); spin_lock_irqsave(&de600_lock, flags); if (adapter_init(dev)) { spin_unlock_irqrestore(&de600_lock, flags); return NETDEV_TX_BUSY; } spin_unlock_irqrestore(&de600_lock, flags); } pr_debug("de600_start_xmit:len=%d, page %d/%d\n", skb->len, tx_fifo_in, free_tx_pages); if ((len = skb->len) < RUNT) len = RUNT; spin_lock_irqsave(&de600_lock, flags); select_nic(); tx_fifo[tx_fifo_in] = transmit_from = tx_page_adr(tx_fifo_in) - len; tx_fifo_in = (tx_fifo_in + 1) % TX_PAGES; if(check_lost) { de600_setup_address(NODE_ADDRESS, RW_ADDR); de600_read_byte(READ_DATA, dev); if (was_down || (de600_read_byte(READ_DATA, dev) != 0xde)) { if (adapter_init(dev)) { spin_unlock_irqrestore(&de600_lock, flags); return NETDEV_TX_BUSY; } } } de600_setup_address(transmit_from, RW_ADDR); for (i = 0; i < skb->len ; ++i, ++buffer) de600_put_byte(*buffer); for (; i < len; ++i) de600_put_byte(0); if (free_tx_pages-- == TX_PAGES) { dev->trans_start = jiffies; netif_start_queue(dev); de600_setup_address(transmit_from, TX_ADDR); de600_put_command(TX_ENABLE); } else { if (free_tx_pages) netif_start_queue(dev); else netif_stop_queue(dev); select_prn(); } spin_unlock_irqrestore(&de600_lock, flags); dev_kfree_skb(skb); return NETDEV_TX_OK; }