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 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; }
/* * 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 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; }