diff options
Diffstat (limited to 'drivers/net/3c527.c')
| -rw-r--r-- | drivers/net/3c527.c | 526 |
1 files changed, 263 insertions, 263 deletions
diff --git a/drivers/net/3c527.c b/drivers/net/3c527.c index 03c0f71..323b6e5 100644 --- a/drivers/net/3c527.c +++ b/drivers/net/3c527.c @@ -1,7 +1,7 @@ /* 3c527.c: 3Com Etherlink/MC32 driver for Linux 2.4 and 2.6. * * (c) Copyright 1998 Red Hat Software Inc - * Written by Alan Cox. + * Written by Alan Cox. * Further debugging by Carl Drougge. * Initial SMP support by Felipe W Damasio <felipewd@terra.com.br> * Heavily modified by Richard Procter <rnp@paradise.net.nz> @@ -30,12 +30,12 @@ DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Richard Procter <rnp@paradise.net. * The diagram (Figure 1-1) and the POS summary disagree with the * "Interrupt Level" section in the manual. * - * The manual contradicts itself when describing the minimum number - * buffers in the 'configure lists' command. - * My card accepts a buffer config of 4/4. + * The manual contradicts itself when describing the minimum number + * buffers in the 'configure lists' command. + * My card accepts a buffer config of 4/4. * * Setting the SAV BP bit does not save bad packets, but - * only enables RX on-card stats collection. + * only enables RX on-card stats collection. * * The documentation in places seems to miss things. In actual fact * I've always eventually found everything is documented, it just @@ -64,16 +64,16 @@ DRV_NAME ".c:v" DRV_VERSION " " DRV_RELDATE " Richard Procter <rnp@paradise.net. * received frames exceeding a configurable length are passed * directly to the higher networking layers without incuring a copy, * in what amounts to a time/space trade-off. - * + * * The card also keeps a large amount of statistical information * on-board. In a perfect world, these could be used safely at no * cost. However, lacking information to the contrary, processing * them without races would involve so much extra complexity as to * make it unworthwhile to do so. In the end, a hybrid SW/HW - * implementation was made necessary --- see mc32_update_stats(). + * implementation was made necessary --- see mc32_update_stats(). * * DOC: Notes - * + * * It should be possible to use two or more cards, but at this stage * only by loading two copies of the same module. * @@ -132,28 +132,28 @@ static unsigned int mc32_debug = NET_DEBUG; /* The number of low I/O ports used by the ethercard. */ #define MC32_IO_EXTENT 8 -/* As implemented, values must be a power-of-2 -- 4/8/16/32 */ +/* As implemented, values must be a power-of-2 -- 4/8/16/32 */ #define TX_RING_LEN 32 /* Typically the card supports 37 */ #define RX_RING_LEN 8 /* " " " */ -/* Copy break point, see above for details. - * Setting to > 1512 effectively disables this feature. */ +/* Copy break point, see above for details. + * Setting to > 1512 effectively disables this feature. */ #define RX_COPYBREAK 200 /* Value from 3c59x.c */ /* Issue the 82586 workaround command - this is for "busy lans", but - * basically means for all lans now days - has a performance (latency) - * cost, but best set. */ + * basically means for all lans now days - has a performance (latency) + * cost, but best set. */ static const int WORKAROUND_82586=1; /* Pointers to buffers and their on-card records */ -struct mc32_ring_desc +struct mc32_ring_desc { - volatile struct skb_header *p; - struct sk_buff *skb; + volatile struct skb_header *p; + struct sk_buff *skb; }; /* Information that needs to be kept for each board. */ -struct mc32_local +struct mc32_local { int slot; @@ -165,7 +165,7 @@ struct mc32_local volatile struct mc32_stats *stats; /* Start of on-card statistics */ u16 tx_chain; /* Transmit list start offset */ u16 rx_chain; /* Receive list start offset */ - u16 tx_len; /* Transmit list count */ + u16 tx_len; /* Transmit list count */ u16 rx_len; /* Receive list count */ u16 xceiver_desired_state; /* HALTED or RUNNING */ @@ -180,7 +180,7 @@ struct mc32_local atomic_t tx_ring_head; /* index to tx en-queue end */ u16 tx_ring_tail; /* index to tx de-queue end */ - u16 rx_ring_tail; /* index to rx de-queue end */ + u16 rx_ring_tail; /* index to rx de-queue end */ struct semaphore cmd_mutex; /* Serialises issuing of execute commands */ struct completion execution_cmd; /* Card has completed an execute command */ @@ -204,7 +204,7 @@ static const struct mca_adapters_t mc32_adapters[] = { }; -/* Macros for ring index manipulations */ +/* Macros for ring index manipulations */ static inline u16 next_rx(u16 rx) { return (rx+1)&(RX_RING_LEN-1); }; static inline u16 prev_rx(u16 rx) { return (rx-1)&(RX_RING_LEN-1); }; @@ -259,21 +259,21 @@ struct net_device *__init mc32_probe(int unit) SET_MODULE_OWNER(dev); - /* Do not check any supplied i/o locations. + /* Do not check any supplied i/o locations. POS registers usually don't fail :) */ - /* MCA cards have POS registers. - Autodetecting MCA cards is extremely simple. + /* MCA cards have POS registers. + Autodetecting MCA cards is extremely simple. Just search for the card. */ for(i = 0; (mc32_adapters[i].name != NULL); i++) { - current_mca_slot = + current_mca_slot = mca_find_unused_adapter(mc32_adapters[i].id, 0); if(current_mca_slot != MCA_NOTFOUND) { if(!mc32_probe1(dev, current_mca_slot)) { - mca_set_adapter_name(current_mca_slot, + mca_set_adapter_name(current_mca_slot, mc32_adapters[i].name); mca_mark_as_used(current_mca_slot); err = register_netdev(dev); @@ -284,7 +284,7 @@ struct net_device *__init mc32_probe(int unit) } return dev; } - + } } free_netdev(dev); @@ -298,7 +298,7 @@ struct net_device *__init mc32_probe(int unit) * * Decode the slot data and configure the card structures. Having done this we * can reset the card and configure it. The card does a full self test cycle - * in firmware so we have to wait for it to return and post us either a + * in firmware so we have to wait for it to return and post us either a * failure case or some addresses we use to find the board internals. */ @@ -347,7 +347,7 @@ static int __init mc32_probe1(struct net_device *dev, int slot) printk(KERN_INFO "%s: %s found in slot %d:", dev->name, cardname, slot); POS = mca_read_stored_pos(slot, 2); - + if(!(POS&1)) { printk(" disabled.\n"); @@ -357,7 +357,7 @@ static int __init mc32_probe1(struct net_device *dev, int slot) /* Fill in the 'dev' fields. */ dev->base_addr = mca_io_bases[(POS>>1)&7]; dev->mem_start = mca_mem_bases[(POS>>4)&7]; - + POS = mca_read_stored_pos(slot, 4); if(!(POS&1)) { @@ -366,21 +366,21 @@ static int __init mc32_probe1(struct net_device *dev, int slot) } POS = mca_read_stored_pos(slot, 5); - + i=(POS>>4)&3; if(i==3) { printk("invalid memory window.\n"); return -ENODEV; } - + i*=16384; i+=16384; - + dev->mem_end=dev->mem_start + i; - + dev->irq = ((POS>>2)&3)+9; - + if(!request_region(dev->base_addr, MC32_IO_EXTENT, cardname)) { printk("io 0x%3lX, which is busy.\n", dev->base_addr); @@ -389,23 +389,23 @@ static int __init mc32_probe1(struct net_device *dev, int slot) printk("io 0x%3lX irq %d mem 0x%lX (%dK)\n", dev->base_addr, dev->irq, dev->mem_start, i/1024); - - + + /* We ought to set the cache line size here.. */ - - + + /* * Go PROM browsing */ - + printk("%s: Address ", dev->name); - + /* Retrieve and print the ethernet address. */ for (i = 0; i < 6; i++) { mca_write_pos(slot, 6, i+12); mca_write_pos(slot, 7, 0); - + printk(" %2.2x", dev->dev_addr[i] = mca_read_pos(slot,3)); } @@ -413,12 +413,12 @@ static int __init mc32_probe1(struct net_device *dev, int slot) mca_write_pos(slot, 7, 0); POS = mca_read_stored_pos(slot, 4); - + if(POS&2) printk(" : BNC port selected.\n"); - else + else printk(" : AUI port selected.\n"); - + POS=inb(dev->base_addr+HOST_CTRL); POS|=HOST_CTRL_ATTN|HOST_CTRL_RESET; POS&=~HOST_CTRL_INTE; @@ -428,9 +428,9 @@ static int __init mc32_probe1(struct net_device *dev, int slot) /* Reset off */ POS&=~(HOST_CTRL_ATTN|HOST_CTRL_RESET); outb(POS, dev->base_addr+HOST_CTRL); - + udelay(300); - + /* * Grab the IRQ */ @@ -448,14 +448,14 @@ static int __init mc32_probe1(struct net_device *dev, int slot) i=0; base = inb(dev->base_addr); - + while(base == 0xFF) { i++; if(i == 1000) { printk(KERN_ERR "%s: failed to boot adapter.\n", dev->name); - err = -ENODEV; + err = -ENODEV; goto err_exit_irq; } udelay(1000); @@ -470,15 +470,15 @@ static int __init mc32_probe1(struct net_device *dev, int slot) base<0x0A?" test failure":""); else printk(KERN_ERR "%s: unknown failure %d.\n", dev->name, base); - err = -ENODEV; + err = -ENODEV; goto err_exit_irq; } - + base=0; for(i=0;i<4;i++) { int n=0; - + while(!(inb(dev->base_addr+2)&(1<<5))) { n++; @@ -493,31 +493,31 @@ static int __init mc32_probe1(struct net_device *dev, int slot) base|=(inb(dev->base_addr)<<(8*i)); } - + lp->exec_box=isa_bus_to_virt(dev->mem_start+base); - - base=lp->exec_box->data[1]<<16|lp->exec_box->data[0]; - + + base=lp->exec_box->data[1]<<16|lp->exec_box->data[0]; + lp->base = dev->mem_start+base; - - lp->rx_box=isa_bus_to_virt(lp->base + lp->exec_box->data[2]); + + lp->rx_box=isa_bus_to_virt(lp->base + lp->exec_box->data[2]); lp->tx_box=isa_bus_to_virt(lp->base + lp->exec_box->data[3]); - + lp->stats = isa_bus_to_virt(lp->base + lp->exec_box->data[5]); /* * Descriptor chains (card relative) */ - + lp->tx_chain = lp->exec_box->data[8]; /* Transmit list start offset */ lp->rx_chain = lp->exec_box->data[10]; /* Receive list start offset */ - lp->tx_len = lp->exec_box->data[9]; /* Transmit list count */ + lp->tx_len = lp->exec_box->data[9]; /* Transmit list count */ lp->rx_len = lp->exec_box->data[11]; /* Receive list count */ init_MUTEX_LOCKED(&lp->cmd_mutex); init_completion(&lp->execution_cmd); init_completion(&lp->xceiver_cmd); - + printk("%s: Firmware Rev %d. %d RX buffers, %d TX buffers. Base of 0x%08X.\n", dev->name, lp->exec_box->data[12], lp->rx_len, lp->tx_len, lp->base); @@ -543,12 +543,12 @@ err_exit_ports: /** * mc32_ready_poll - wait until we can feed it a command * @dev: The device to wait for - * + * * Wait until the card becomes ready to accept a command via the * command register. This tells us nothing about the completion * status of any pending commands and takes very little time at all. */ - + static inline void mc32_ready_poll(struct net_device *dev) { int ioaddr = dev->base_addr; @@ -608,22 +608,22 @@ static int mc32_command_nowait(struct net_device *dev, u16 cmd, void *data, int * * Sends exec commands in a user context. This permits us to wait around * for the replies and also to wait for the command buffer to complete - * from a previous command before we execute our command. After our + * from a previous command before we execute our command. After our * command completes we will attempt any pending multicast reload * we blocked off by hogging the exec buffer. * - * You feed the card a command, you wait, it interrupts you get a + * You feed the card a command, you wait, it interrupts you get a * reply. All well and good. The complication arises because you use * commands for filter list changes which come in at bh level from things * like IPV6 group stuff. */ - + static int mc32_command(struct net_device *dev, u16 cmd, void *data, int len) { struct mc32_local *lp = netdev_priv(dev); int ioaddr = dev->base_addr; int ret = 0; - + down(&lp->cmd_mutex); /* @@ -640,7 +640,7 @@ static int mc32_command(struct net_device *dev, u16 cmd, void *data, int len) outb(1<<6, ioaddr+HOST_CMD); wait_for_completion(&lp->execution_cmd); - + if(lp->exec_box->mbox&(1<<13)) ret = -1; @@ -664,8 +664,8 @@ static int mc32_command(struct net_device *dev, u16 cmd, void *data, int len) * @dev: The 3c527 card to issue the command to * * This may be called from the interrupt state, where it is used - * to restart the rx ring if the card runs out of rx buffers. - * + * to restart the rx ring if the card runs out of rx buffers. + * * We must first check if it's ok to (re)start the transceiver. See * mc32_close for details. */ @@ -675,21 +675,21 @@ static void mc32_start_transceiver(struct net_device *dev) { struct mc32_local *lp = netdev_priv(dev); int ioaddr = dev->base_addr; - /* Ignore RX overflow on device closure */ + /* Ignore RX overflow on device closure */ if (lp->xceiver_desired_state==HALTED) - return; + return; /* Give the card the offset to the post-EOL-bit RX descriptor */ - mc32_ready_poll(dev); + mc32_ready_poll(dev); lp->rx_box->mbox=0; - lp->rx_box->data[0]=lp->rx_ring[prev_rx(lp->rx_ring_tail)].p->next; - outb(HOST_CMD_START_RX, ioaddr+HOST_CMD); + lp->rx_box->data[0]=lp->rx_ring[prev_rx(lp->rx_ring_tail)].p->next; + outb(HOST_CMD_START_RX, ioaddr+HOST_CMD); - mc32_ready_poll(dev); + mc32_ready_poll(dev); lp->tx_box->mbox=0; - outb(HOST_CMD_RESTRT_TX, ioaddr+HOST_CMD); /* card ignores this on RX restart */ - - /* We are not interrupted on start completion */ + outb(HOST_CMD_RESTRT_TX, ioaddr+HOST_CMD); /* card ignores this on RX restart */ + + /* We are not interrupted on start completion */ } @@ -703,21 +703,21 @@ static void mc32_start_transceiver(struct net_device *dev) { * * We then sleep until the card has notified us that both rx and * tx have been suspended. - */ + */ -static void mc32_halt_transceiver(struct net_device *dev) +static void mc32_halt_transceiver(struct net_device *dev) { struct mc32_local *lp = netdev_priv(dev); int ioaddr = dev->base_addr; - mc32_ready_poll(dev); + mc32_ready_poll(dev); lp->rx_box->mbox=0; - outb(HOST_CMD_SUSPND_RX, ioaddr+HOST_CMD); + outb(HOST_CMD_SUSPND_RX, ioaddr+HOST_CMD); wait_for_completion(&lp->xceiver_cmd); - mc32_ready_poll(dev); + mc32_ready_poll(dev); lp->tx_box->mbox=0; - outb(HOST_CMD_SUSPND_TX, ioaddr+HOST_CMD); + outb(HOST_CMD_SUSPND_TX, ioaddr+HOST_CMD); wait_for_completion(&lp->xceiver_cmd); } @@ -741,14 +741,14 @@ static void mc32_halt_transceiver(struct net_device *dev) * We then set the end-of-list bit for the last entry so that the * card will know when it has run out of buffers. */ - + static int mc32_load_rx_ring(struct net_device *dev) { struct mc32_local *lp = netdev_priv(dev); int i; u16 rx_base; volatile struct skb_header *p; - + rx_base=lp->rx_chain; for(i=0; i<RX_RING_LEN; i++) { @@ -761,14 +761,14 @@ static int mc32_load_rx_ring(struct net_device *dev) skb_reserve(lp->rx_ring[i].skb, 18); p=isa_bus_to_virt(lp->base+rx_base); - + p->control=0; p->data=isa_virt_to_bus(lp->rx_ring[i].skb->data); p->status=0; p->length=1532; - - lp->rx_ring[i].p=p; - rx_base=p->next; + + lp->rx_ring[i].p=p; + rx_base=p->next; } lp->rx_ring[i-1].p->control |= CONTROL_EOL; @@ -776,14 +776,14 @@ static int mc32_load_rx_ring(struct net_device *dev) lp->rx_ring_tail=0; return 0; -} +} /** * mc32_flush_rx_ring - free the ring of receive buffers * @lp: Local data of 3c527 to flush the rx ring of * - * Free the buffer for each ring slot. This may be called + * Free the buffer for each ring slot. This may be called * before mc32_load_rx_ring(), eg. on error in mc32_open(). * Requires rx skb pointers to point to a valid skb, or NULL. */ @@ -791,16 +791,16 @@ static int mc32_load_rx_ring(struct net_device *dev) static void mc32_flush_rx_ring(struct net_device *dev) { struct mc32_local *lp = netdev_priv(dev); - int i; + int i; - for(i=0; i < RX_RING_LEN; i++) - { + for(i=0; i < RX_RING_LEN; i++) + { if (lp->rx_ring[i].skb) { dev_kfree_skb(lp->rx_ring[i].skb); lp->rx_ring[i].skb = NULL; } - lp->rx_ring[i].p=NULL; - } + lp->rx_ring[i].p=NULL; + } } @@ -808,31 +808,31 @@ static void mc32_flush_rx_ring(struct net_device *dev) * mc32_load_tx_ring - load transmit ring * @dev: The 3c527 card to issue the command to * - * This sets up the host transmit data-structures. + * This sets up the host transmit data-structures. * * First, we obtain from the card it's current postion in the tx * ring, so that we will know where to begin transmitting * packets. - * + * * Then, we read the 'next' pointers from the on-card tx ring into * our tx_ring array to reduce slow shared-mem reads. Finally, we * intitalise the tx house keeping variables. - * - */ + * + */ static void mc32_load_tx_ring(struct net_device *dev) -{ +{ struct mc32_local *lp = netdev_priv(dev); volatile struct skb_header *p; - int i; + int i; u16 tx_base; - tx_base=lp->tx_box->data[0]; + tx_base=lp->tx_box->data[0]; for(i=0 ; i<TX_RING_LEN ; i++) { p=isa_bus_to_virt(lp->base+tx_base); - lp->tx_ring[i].p=p; + lp->tx_ring[i].p=p; lp->tx_ring[i].skb=NULL; tx_base=p->next; @@ -841,10 +841,10 @@ static void mc32_load_tx_ring(struct net_device *dev) /* -1 so that tx_ring_head cannot "lap" tx_ring_tail */ /* see mc32_tx_ring */ - atomic_set(&lp->tx_count, TX_RING_LEN-1); - atomic_set(&lp->tx_ring_head, 0); - lp->tx_ring_tail=0; -} + atomic_set(&lp->tx_count, TX_RING_LEN-1); + atomic_set(&lp->tx_ring_head, 0); + lp->tx_ring_tail=0; +} /** @@ -871,11 +871,11 @@ static void mc32_flush_tx_ring(struct net_device *dev) } } - atomic_set(&lp->tx_count, 0); - atomic_set(&lp->tx_ring_head, 0); + atomic_set(&lp->tx_count, 0); + atomic_set(&lp->tx_ring_head, 0); lp->tx_ring_tail=0; } - + /** * mc32_open - handle 'up' of card @@ -909,7 +909,7 @@ static int mc32_open(struct net_device *dev) regs=inb(ioaddr+HOST_CTRL); regs|=HOST_CTRL_INTE; outb(regs, ioaddr+HOST_CTRL); - + /* * Allow ourselves to issue commands */ @@ -924,52 +924,52 @@ static int mc32_open(struct net_device *dev) mc32_command(dev, 4, &one, 2); /* - * Poke it to make sure it's really dead. + * Poke it to make sure it's really dead. */ - mc32_halt_transceiver(dev); - mc32_flush_tx_ring(dev); + mc32_halt_transceiver(dev); + mc32_flush_tx_ring(dev); - /* - * Ask card to set up on-card descriptors to our spec - */ + /* + * Ask card to set up on-card descriptors to our spec + */ - if(mc32_command(dev, 8, descnumbuffs, 4)) { + if(mc32_command(dev, 8, descnumbuffs, 4)) { printk("%s: %s rejected our buffer configuration!\n", dev->name, cardname); - mc32_close(dev); - return -ENOBUFS; + mc32_close(dev); + return -ENOBUFS; } - - /* Report new configuration */ - mc32_command(dev, 6, NULL, 0); + + /* Report new configuration */ + mc32_command(dev, 6, NULL, 0); lp->tx_chain = lp->exec_box->data[8]; /* Transmit list start offset */ lp->rx_chain = lp->exec_box->data[10]; /* Receive list start offset */ - lp->tx_len = lp->exec_box->data[9]; /* Transmit list count */ + lp->tx_len = lp->exec_box->data[9]; /* Transmit list count */ lp->rx_len = lp->exec_box->data[11]; /* Receive list count */ - + /* Set Network Address */ mc32_command(dev, 1, dev->dev_addr, 6); - + /* Set the filters */ mc32_set_multicast_list(dev); - - if (WORKAROUND_82586) { + + if (WORKAROUND_82586) { u16 zero_word=0; mc32_command(dev, 0x0D, &zero_word, 2); /* 82586 bug workaround on */ } mc32_load_tx_ring(dev); - - if(mc32_load_rx_ring(dev)) + + if(mc32_load_rx_ring(dev)) { mc32_close(dev); return -ENOBUFS; } lp->xceiver_desired_state = RUNNING; - + /* And finally, set the ball rolling... */ mc32_start_transceiver(dev); @@ -1015,14 +1015,14 @@ static void mc32_timeout(struct net_device *dev) * after we've established a valid packet on the tx ring (and * before we let the card "see" it, to prevent it racing with the * irq handler). - * + * */ static int mc32_send_packet(struct sk_buff *skb, struct net_device *dev) { struct mc32_local *lp = netdev_priv(dev); u32 head = atomic_read(&lp->tx_ring_head); - + volatile struct skb_header *p, *np; netif_stop_queue(dev); @@ -1036,31 +1036,31 @@ static int mc32_send_packet(struct sk_buff *skb, struct net_device *dev) return 0; } - atomic_dec(&lp->tx_count); + atomic_dec(&lp->tx_count); /* P is the last sending/sent buffer as a pointer */ p=lp->tx_ring[head].p; - + head = next_tx(head); /* NP is the buffer we will be loading */ - np=lp->tx_ring[head].p; - + np=lp->tx_ring[head].p; + /* We will need this to flush the buffer out */ lp->tx_ring[head].skb=skb; - np->length = unlikely(skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len; + np->length = unlikely(skb->len < ETH_ZLEN) ? ETH_ZLEN : skb->len; np->data = isa_virt_to_bus(skb->data); np->status = 0; - np->control = CONTROL_EOP | CONTROL_EOL; + np->control = CONTROL_EOP | CONTROL_EOL; wmb(); - + /* * The new frame has been setup; we can now * let the interrupt handler and card "see" it */ - atomic_set(&lp->tx_ring_head, head); + atomic_set(&lp->tx_ring_head, head); p->control &= ~CONTROL_EOL; netif_wake_queue(dev); @@ -1072,13 +1072,13 @@ static int mc32_send_packet(struct sk_buff *skb, struct net_device *dev) * mc32_update_stats - pull off the on board statistics * @dev: 3c527 to service * - * + * * Query and reset the on-card stats. There's the small possibility * of a race here, which would result in an underestimation of * actual errors. As such, we'd prefer to keep all our stats * collection in software. As a rule, we do. However it can't be * used for rx errors and collisions as, by default, the card discards - * bad rx packets. + * bad rx packets. * * Setting the SAV BP in the rx filter command supposedly * stops this behaviour. However, testing shows that it only seems to @@ -1090,30 +1090,30 @@ static int mc32_send_packet(struct sk_buff *skb, struct net_device *dev) static void mc32_update_stats(struct net_device *dev) { struct mc32_local *lp = netdev_priv(dev); - volatile struct mc32_stats *st = lp->stats; + volatile struct mc32_stats *st = lp->stats; - u32 rx_errors=0; - - rx_errors+=lp->net_stats.rx_crc_errors +=st->rx_crc_errors; + u32 rx_errors=0; + + rx_errors+=lp->net_stats.rx_crc_errors +=st->rx_crc_errors; st->rx_crc_errors=0; - rx_errors+=lp->net_stats.rx_fifo_errors +=st->rx_overrun_errors; - st->rx_overrun_errors=0; - rx_errors+=lp->net_stats.rx_frame_errors +=st->rx_alignment_errors; + rx_errors+=lp->net_stats.rx_fifo_errors +=st->rx_overrun_errors; + st->rx_overrun_errors=0; + rx_errors+=lp->net_stats.rx_frame_errors +=st->rx_alignment_errors; st->rx_alignment_errors=0; - rx_errors+=lp->net_stats.rx_length_errors+=st->rx_tooshort_errors; + rx_errors+=lp->net_stats.rx_length_errors+=st->rx_tooshort_errors; st->rx_tooshort_errors=0; rx_errors+=lp->net_stats.rx_missed_errors+=st->rx_outofresource_errors; - st->rx_outofresource_errors=0; - lp->net_stats.rx_errors=rx_errors; - + st->rx_outofresource_errors=0; + lp->net_stats.rx_errors=rx_errors; + /* Number of packets which saw one collision */ lp->net_stats.collisions+=st->dataC[10]; - st->dataC[10]=0; + st->dataC[10]=0; - /* Number of packets which saw 2--15 collisions */ - lp->net_stats.collisions+=st->dataC[11]; - st->dataC[11]=0; -} + /* Number of packets which saw 2--15 collisions */ + lp->net_stats.collisions+=st->dataC[11]; + st->dataC[11]=0; +} /** @@ -1130,7 +1130,7 @@ static void mc32_update_stats(struct net_device *dev) * For each completed packet, we will either copy it and pass it up * the stack or, if the packet is near MTU sized, we allocate * another buffer and flip the old one up the stack. - * + * * We must succeed in keeping a buffer on the ring. If necessary we * will toss a received packet rather than lose a ring entry. Once * the first uncompleted descriptor is found, we move the @@ -1147,72 +1147,72 @@ static void mc32_rx_ring(struct net_device *dev) int x=0; rx_old_tail = rx_ring_tail = lp->rx_ring_tail; - + do - { - p=lp->rx_ring[rx_ring_tail].p; + { + p=lp->rx_ring[rx_ring_tail].p; - if(!(p->status & (1<<7))) { /* Not COMPLETED */ + if(!(p->status & (1<<7))) { /* Not COMPLETED */ break; - } + } if(p->status & (1<<6)) /* COMPLETED_OK */ - { + { u16 length=p->length; - struct sk_buff *skb; - struct sk_buff *newskb; + struct sk_buff *skb; + struct sk_buff *newskb; /* Try to save time by avoiding a copy on big frames */ - if ((length > RX_COPYBREAK) - && ((newskb=dev_alloc_skb(1532)) != NULL)) - { + if ((length > RX_COPYBREAK) + && ((newskb=dev_alloc_skb(1532)) != NULL)) + { skb=lp->rx_ring[rx_ring_tail].skb; skb_put(skb, length); - - skb_reserve(newskb,18); - lp->rx_ring[rx_ring_tail].skb=newskb; - p->data=isa_virt_to_bus(newskb->data); - } - else + + skb_reserve(newskb,18); + lp->rx_ring[rx_ring_tail].skb=newskb; + p->data=isa_virt_to_bus(newskb->data); + } + else { - skb=dev_alloc_skb(length+2); + skb=dev_alloc_skb(length+2); if(skb==NULL) { - lp->net_stats.rx_dropped++; - goto dropped; + lp->net_stats.rx_dropped++; + goto dropped; } skb_reserve(skb,2); memcpy(skb_put(skb, length), lp->rx_ring[rx_ring_tail].skb->data, length); } - - skb->protocol=eth_type_trans(skb,dev); - skb->dev=dev; + + skb->protocol=eth_type_trans(skb,dev); + skb->dev=dev; dev->last_rx = jiffies; - lp->net_stats.rx_packets++; - lp->net_stats.rx_bytes += length; + lp->net_stats.rx_packets++; + lp->net_stats.rx_bytes += length; netif_rx(skb); } dropped: - p->length = 1532; + p->length = 1532; p->status = 0; - - rx_ring_tail=next_rx(rx_ring_tail); + + rx_ring_tail=next_rx(rx_ring_tail); } - while(x++<48); + while(x++<48); - /* If there was actually a frame to be processed, place the EOL bit */ - /* at the descriptor prior to the one to be filled next */ + /* If there was actually a frame to be processed, place the EOL bit */ + /* at the descriptor prior to the one to be filled next */ - if (rx_ring_tail != rx_old_tail) - { - lp->rx_ring[prev_rx(rx_ring_tail)].p->control |= CONTROL_EOL; - lp->rx_ring[prev_rx(rx_old_tail)].p->control &= ~CONTROL_EOL; + if (rx_ring_tail != rx_old_tail) + { + lp->rx_ring[prev_rx(rx_ring_tail)].p->control |= CONTROL_EOL; + lp->rx_ring[prev_rx(rx_old_tail)].p->control &= ~CONTROL_EOL; - lp->rx_ring_tail=rx_ring_tail; + lp->rx_ring_tail=rx_ring_tail; } } @@ -1228,10 +1228,10 @@ static void mc32_rx_ring(struct net_device *dev) * any errors. This continues until the transmit ring is emptied * or we reach a descriptor that hasn't yet been processed by the * card. - * + * */ -static void mc32_tx_ring(struct net_device *dev) +static void mc32_tx_ring(struct net_device *dev) { struct mc32_local *lp = netdev_priv(dev); volatile struct skb_header *np; @@ -1243,28 +1243,28 @@ static void mc32_tx_ring(struct net_device *dev) * condition with 'queue full' */ - while (lp->tx_ring_tail != atomic_read(&lp->tx_ring_head)) - { - u16 t; + while (lp->tx_ring_tail != atomic_read(&lp->tx_ring_head)) + { + u16 t; - t=next_tx(lp->tx_ring_tail); - np=lp->tx_ring[t].p; + t=next_tx(lp->tx_ring_tail); + np=lp->tx_ring[t].p; - if(!(np->status & (1<<7))) + if(!(np->status & (1<<7))) { - /* Not COMPLETED */ - break; - } + /* Not COMPLETED */ + break; + } lp->net_stats.tx_packets++; if(!(np->status & (1<<6))) /* Not COMPLETED_OK */ { - lp->net_stats.tx_errors++; + lp->net_stats.tx_errors++; switch(np->status&0x0F) { case 1: lp->net_stats.tx_aborted_errors++; - break; /* Max collisions */ + break; /* Max collisions */ case 2: lp->net_stats.tx_fifo_errors++; break; @@ -1273,10 +1273,10 @@ static void mc32_tx_ring(struct net_device *dev) break; case 4: lp->net_stats.tx_window_errors++; - break; /* CTS Lost */ + break; /* CTS Lost */ case 5: lp->net_stats.tx_aborted_errors++; - break; /* Transmit timeout */ + break; /* Transmit timeout */ } } /* Packets are sent in order - this is @@ -1288,10 +1288,10 @@ static void mc32_tx_ring(struct net_device *dev) atomic_inc(&lp->tx_count); netif_wake_queue(dev); - lp->tx_ring_tail=t; + lp->tx_ring_tail=t; } -} +} /** @@ -1322,13 +1322,13 @@ static irqreturn_t mc32_interrupt(int irq, void *dev_id, struct pt_regs * regs) struct mc32_local *lp; int ioaddr, status, boguscount = 0; int rx_event = 0; - int tx_event = 0; - + int tx_event = 0; + if (dev == NULL) { printk(KERN_WARNING "%s: irq %d for unknown device.\n", cardname, irq); return IRQ_NONE; } - + ioaddr = dev->base_addr; lp = netdev_priv(dev); @@ -1338,19 +1338,19 @@ static irqreturn_t mc32_interrupt(int irq, void *dev_id, struct pt_regs * regs) { status=inb(ioaddr+HOST_CMD); -#ifdef DEBUG_IRQ +#ifdef DEBUG_IRQ printk("Status TX%d RX%d EX%d OV%d BC%d\n", (status&7), (status>>3)&7, (status>>6)&1, (status>>7)&1, boguscount); #endif - + switch(status&7) { case 0: break; case 6: /* TX fail */ case 2: /* TX ok */ - tx_event = 1; + tx_event = 1; break; case 3: /* Halt */ case 4: /* Abort */ @@ -1365,7 +1365,7 @@ static irqreturn_t mc32_interrupt(int irq, void *dev_id, struct pt_regs * regs) case 0: break; case 2: /* RX */ - rx_event=1; + rx_event=1; break; case 3: /* Halt */ case 4: /* Abort */ @@ -1375,12 +1375,12 @@ static irqreturn_t mc32_interrupt(int irq, void *dev_id, struct pt_regs * regs) /* Out of RX buffers stat */ /* Must restart rx */ lp->net_stats.rx_dropped++; - mc32_rx_ring(dev); - mc32_start_transceiver(dev); + mc32_rx_ring(dev); + mc32_start_transceiver(dev); break; default: - printk("%s: strange rx ack %d\n", - dev->name, status&7); + printk("%s: strange rx ack %d\n", + dev->name, status&7); } status>>=3; if(status&1) @@ -1389,10 +1389,10 @@ static irqreturn_t mc32_interrupt(int irq, void *dev_id, struct pt_regs * regs) * No thread is waiting: we need to tidy * up ourself. */ - + if (lp->cmd_nonblocking) { up(&lp->cmd_mutex); - if (lp->mc_reload_wait) + if (lp->mc_reload_wait) mc32_reset_multicast_list(dev); } else complete(&lp->execution_cmd); @@ -1401,22 +1401,22 @@ static irqreturn_t mc32_interrupt(int irq, void *dev_id, struct pt_regs * regs) { /* * We get interrupted once per - * counter that is about to overflow. + * counter that is about to overflow. */ - mc32_update_stats(dev); + mc32_update_stats(dev); } } /* - * Process the transmit and receive rings + * Process the transmit and receive rings */ - if(tx_event) + if(tx_event) mc32_tx_ring(dev); - - if(rx_event) + + if(rx_event) mc32_rx_ring(dev); return IRQ_HANDLED; @@ -1435,7 +1435,7 @@ static irqreturn_t mc32_interrupt(int irq, void *dev_id, struct pt_regs * regs) * driver. Otherwise, it is possible that the card may run out * of receive buffers and restart the transceiver while we're * trying to close it. - * + * * We abort any receive and transmits going on and then wait until * any pending exec commands have completed in other code threads. * In theory we can't get here while that is true, in practice I am @@ -1452,7 +1452,7 @@ static int mc32_close(struct net_device *dev) u8 regs; u16 one=1; - + lp->xceiver_desired_state = HALTED; netif_stop_queue(dev); @@ -1464,22 +1464,22 @@ static int mc32_close(struct net_device *dev) /* Shut down the transceiver */ - mc32_halt_transceiver(dev); - + mc32_halt_transceiver(dev); + /* Ensure we issue no more commands beyond this point */ down(&lp->cmd_mutex); - - /* Ok the card is now stopping */ - + + /* Ok the card is now stopping */ + regs=inb(ioaddr+HOST_CTRL); regs&=~HOST_CTRL_INTE; outb(regs, ioaddr+HOST_CTRL); mc32_flush_rx_ring(dev); mc32_flush_tx_ring(dev); - - mc32_update_stats(dev); + + mc32_update_stats(dev); return 0; } @@ -1490,15 +1490,15 @@ static int mc32_close(struct net_device *dev) * @dev: The 3c527 card to handle * * We've collected all the stats we can in software already. Now - * it's time to update those kept on-card and return the lot. - * + * it's time to update those kept on-card and return the lot. + * */ static struct net_device_stats *mc32_get_stats(struct net_device *dev) { struct mc32_local *lp = netdev_priv(dev); - - mc32_update_stats(dev); + + mc32_update_stats(dev); return &lp->net_stats; } @@ -1506,7 +1506,7 @@ static struct net_device_stats *mc32_get_stats(struct net_device *dev) /** * do_mc32_set_multicast_list - attempt to update multicasts * @dev: 3c527 device to load the list on - * @retry: indicates this is not the first call. + * @retry: indicates this is not the first call. * * * Actually set or clear the multicast filter for this adaptor. The @@ -1514,22 +1514,22 @@ static struct net_device_stats *mc32_get_stats(struct net_device *dev) * state as it may take multiple calls to get the command sequence * completed. We just keep trying to schedule the loads until we * manage to process them all. - * + * * 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. * - * See mc32_update_stats() regards setting the SAV BP bit. + * num_addrs > 0 Multicast mode, receive normal and MC packets, + * and do best-effort filtering. + * + * See mc32_update_stats() regards setting the SAV BP bit. * */ static void do_mc32_set_multicast_list(struct net_device *dev, int retry) { struct mc32_local *lp = netdev_priv(dev); - u16 filt = (1<<2); /* Save Bad Packets, for stats purposes */ + u16 filt = (1<<2); /* Save Bad Packets, for stats purposes */ if (dev->flags&IFF_PROMISC) /* Enable promiscuous mode */ @@ -1544,9 +1544,9 @@ static void do_mc32_set_multicast_list(struct net_device *dev, int retry) unsigned char block[62]; unsigned char *bp; struct dev_mc_list *dmc=dev->mc_list; - + int i; - + if(retry==0) lp->mc_list_valid = 0; if(!lp->mc_list_valid) @@ -1554,7 +1554,7 @@ static void do_mc32_set_multicast_list(struct net_device *dev, int retry) block[1]=0; block[0]=dev->mc_count; bp=block+2; - + for(i=0;i<dev->mc_count;i++) { memcpy(bp, dmc->dmi_addr, 6); @@ -1569,12 +1569,12 @@ static void do_mc32_set_multicast_list(struct net_device *dev, int retry) lp->mc_list_valid=1; } } - - if(mc32_command_nowait(dev, 0, &filt, 2)==-1) + + if(mc32_command_nowait(dev, 0, &filt, 2)==-1) { lp->mc_reload_wait = 1; - } - else { + } + else { lp->mc_reload_wait = 0; } } |
