diff options
Diffstat (limited to 'drivers/net/tulip/xircom_cb.c')
| -rw-r--r-- | drivers/net/tulip/xircom_cb.c | 208 |
1 files changed, 104 insertions, 104 deletions
diff --git a/drivers/net/tulip/xircom_cb.c b/drivers/net/tulip/xircom_cb.c index 5634410..63c2175 100644 --- a/drivers/net/tulip/xircom_cb.c +++ b/drivers/net/tulip/xircom_cb.c @@ -1,11 +1,11 @@ /* - * xircom_cb: A driver for the (tulip-like) Xircom Cardbus ethernet cards + * xircom_cb: A driver for the (tulip-like) Xircom Cardbus ethernet cards * * This software is (C) by the respective authors, and licensed under the GPL * License. * * Written by Arjan van de Ven for Red Hat, Inc. - * Based on work by Jeff Garzik, Doug Ledford and Donald Becker + * Based on work by Jeff Garzik, Doug Ledford and Donald Becker * * This software may be used and distributed according to the terms * of the GNU General Public License, incorporated herein by reference. @@ -93,7 +93,7 @@ struct xircom_private { unsigned long io_port; int open; - + /* transmit_used is the rotating counter that indicates which transmit descriptor has to be used next */ int transmit_used; @@ -153,10 +153,10 @@ static struct pci_device_id xircom_pci_table[] = { MODULE_DEVICE_TABLE(pci, xircom_pci_table); static struct pci_driver xircom_ops = { - .name = "xircom_cb", - .id_table = xircom_pci_table, - .probe = xircom_probe, - .remove = xircom_remove, + .name = "xircom_cb", + .id_table = xircom_pci_table, + .probe = xircom_probe, + .remove = xircom_remove, .suspend =NULL, .resume =NULL }; @@ -174,7 +174,7 @@ static void print_binary(unsigned int number) buffer[i2++]='1'; else buffer[i2++]='0'; - if ((i&3)==0) + if ((i&3)==0) buffer[i2++]=' '; } printk("%s\n",buffer); @@ -196,10 +196,10 @@ static struct ethtool_ops netdev_ethtool_ops = { /* xircom_probe is the code that gets called on device insertion. it sets up the hardware and registers the device to the networklayer. - + TODO: Send 1 or 2 "dummy" packets here as the card seems to discard the first two packets that get send, and pump hates that. - + */ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_id *id) { @@ -209,7 +209,7 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_ unsigned long flags; unsigned short tmp16; enter("xircom_probe"); - + /* First do the PCI initialisation */ if (pci_enable_device(pdev)) @@ -217,24 +217,24 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_ /* disable all powermanagement */ pci_write_config_dword(pdev, PCI_POWERMGMT, 0x0000); - + pci_set_master(pdev); /* Why isn't this done by pci_enable_device ?*/ - /* clear PCI status, if any */ - pci_read_config_word (pdev,PCI_STATUS, &tmp16); + /* clear PCI status, if any */ + pci_read_config_word (pdev,PCI_STATUS, &tmp16); pci_write_config_word (pdev, PCI_STATUS,tmp16); - + pci_read_config_byte(pdev, PCI_REVISION_ID, &chip_rev); - + if (!request_region(pci_resource_start(pdev, 0), 128, "xircom_cb")) { printk(KERN_ERR "xircom_probe: failed to allocate io-region\n"); return -ENODEV; } - /* + /* Before changing the hardware, allocate the memory. This way, we can fail gracefully if not enough memory - is available. + is available. */ dev = alloc_etherdev(sizeof(struct xircom_private)); if (!dev) { @@ -242,13 +242,13 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_ goto device_fail; } private = netdev_priv(dev); - + /* Allocate the send/receive buffers */ private->rx_buffer = pci_alloc_consistent(pdev,8192,&private->rx_dma_handle); if (private->rx_buffer == NULL) { printk(KERN_ERR "xircom_probe: no memory for rx buffer \n"); goto rx_buf_fail; - } + } private->tx_buffer = pci_alloc_consistent(pdev,8192,&private->tx_dma_handle); if (private->tx_buffer == NULL) { printk(KERN_ERR "xircom_probe: no memory for tx buffer \n"); @@ -265,11 +265,11 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_ spin_lock_init(&private->lock); dev->irq = pdev->irq; dev->base_addr = private->io_port; - + initialize_card(private); read_mac_address(private); setup_descriptors(private); - + dev->open = &xircom_open; dev->hard_start_xmit = &xircom_start_xmit; dev->stop = &xircom_close; @@ -285,19 +285,19 @@ static int __devinit xircom_probe(struct pci_dev *pdev, const struct pci_device_ printk(KERN_ERR "xircom_probe: netdevice registration failed.\n"); goto reg_fail; } - + printk(KERN_INFO "%s: Xircom cardbus revision %i at irq %i \n", dev->name, chip_rev, pdev->irq); /* start the transmitter to get a heartbeat */ /* TODO: send 2 dummy packets here */ transceiver_voodoo(private); - + spin_lock_irqsave(&private->lock,flags); activate_transmitter(private); activate_receiver(private); spin_unlock_irqrestore(&private->lock,flags); - + trigger_receive(private); - + leave("xircom_probe"); return 0; @@ -332,7 +332,7 @@ static void __devexit xircom_remove(struct pci_dev *pdev) free_netdev(dev); pci_set_drvdata(pdev, NULL); leave("xircom_remove"); -} +} static irqreturn_t xircom_interrupt(int irq, void *dev_instance, struct pt_regs *regs) { @@ -346,11 +346,11 @@ static irqreturn_t xircom_interrupt(int irq, void *dev_instance, struct pt_regs spin_lock(&card->lock); status = inl(card->io_port+CSR5); -#ifdef DEBUG +#ifdef DEBUG print_binary(status); printk("tx status 0x%08x 0x%08x \n",card->tx_buffer[0],card->tx_buffer[4]); printk("rx status 0x%08x 0x%08x \n",card->rx_buffer[0],card->rx_buffer[4]); -#endif +#endif /* Handle shared irq and hotplug */ if (status == 0 || status == 0xffffffff) { spin_unlock(&card->lock); @@ -366,21 +366,21 @@ static irqreturn_t xircom_interrupt(int irq, void *dev_instance, struct pt_regs netif_carrier_on(dev); else netif_carrier_off(dev); - + } - /* Clear all remaining interrupts */ + /* Clear all remaining interrupts */ status |= 0xffffffff; /* FIXME: make this clear only the real existing bits */ outl(status,card->io_port+CSR5); - - for (i=0;i<NUMDESCRIPTORS;i++) + + for (i=0;i<NUMDESCRIPTORS;i++) investigate_write_descriptor(dev,card,i,bufferoffsets[i]); - for (i=0;i<NUMDESCRIPTORS;i++) + for (i=0;i<NUMDESCRIPTORS;i++) investigate_read_descriptor(dev,card,i,bufferoffsets[i]); - + spin_unlock(&card->lock); leave("xircom_interrupt"); return IRQ_HANDLED; @@ -393,38 +393,38 @@ static int xircom_start_xmit(struct sk_buff *skb, struct net_device *dev) int nextdescriptor; int desc; enter("xircom_start_xmit"); - + card = netdev_priv(dev); spin_lock_irqsave(&card->lock,flags); - + /* First see if we can free some descriptors */ - for (desc=0;desc<NUMDESCRIPTORS;desc++) + for (desc=0;desc<NUMDESCRIPTORS;desc++) investigate_write_descriptor(dev,card,desc,bufferoffsets[desc]); - - + + nextdescriptor = (card->transmit_used +1) % (NUMDESCRIPTORS); desc = card->transmit_used; - + /* only send the packet if the descriptor is free */ if (card->tx_buffer[4*desc]==0) { /* Copy the packet data; zero the memory first as the card sometimes sends more than you ask it to. */ - + memset(&card->tx_buffer[bufferoffsets[desc]/4],0,1536); memcpy(&(card->tx_buffer[bufferoffsets[desc]/4]),skb->data,skb->len); - - + + /* FIXME: The specification tells us that the length we send HAS to be a multiple of 4 bytes. */ - + card->tx_buffer[4*desc+1] = skb->len; if (desc == NUMDESCRIPTORS-1) card->tx_buffer[4*desc+1] |= (1<<25); /* bit 25: last descriptor of the ring */ card->tx_buffer[4*desc+1] |= 0xF0000000; - /* 0xF0... means want interrupts*/ + /* 0xF0... means want interrupts*/ card->tx_skb[desc] = skb; - + wmb(); /* This gives the descriptor to the card */ card->tx_buffer[4*desc] = 0x80000000; @@ -433,18 +433,18 @@ static int xircom_start_xmit(struct sk_buff *skb, struct net_device *dev) netif_stop_queue(dev); } card->transmit_used = nextdescriptor; - leave("xircom-start_xmit - sent"); + leave("xircom-start_xmit - sent"); spin_unlock_irqrestore(&card->lock,flags); return 0; } - + /* Uh oh... no free descriptor... drop the packet */ netif_stop_queue(dev); spin_unlock_irqrestore(&card->lock,flags); trigger_transmit(card); - + return -EIO; } @@ -462,7 +462,7 @@ static int xircom_open(struct net_device *dev) leave("xircom_open - No IRQ"); return retval; } - + xircom_up(xp); xp->open = 1; leave("xircom_open"); @@ -473,31 +473,31 @@ static int xircom_close(struct net_device *dev) { struct xircom_private *card; unsigned long flags; - + enter("xircom_close"); card = netdev_priv(dev); netif_stop_queue(dev); /* we don't want new packets */ - + spin_lock_irqsave(&card->lock,flags); - + disable_all_interrupts(card); -#if 0 +#if 0 /* We can enable this again once we send dummy packets on ifconfig ethX up */ deactivate_receiver(card); deactivate_transmitter(card); -#endif +#endif remove_descriptors(card); - + spin_unlock_irqrestore(&card->lock,flags); - + card->open = 0; free_irq(dev->irq,dev); - + leave("xircom_close"); - + return 0; - + } @@ -506,8 +506,8 @@ static struct net_device_stats *xircom_get_stats(struct net_device *dev) { struct xircom_private *card = netdev_priv(dev); return &card->stats; -} - +} + #ifdef CONFIG_NET_POLL_CONTROLLER static void xircom_poll_controller(struct net_device *dev) @@ -540,7 +540,7 @@ static void initialize_card(struct xircom_private *card) outl(val, card->io_port + CSR0); - val = 0; /* Value 0x00 is a safe and conservative value + val = 0; /* Value 0x00 is a safe and conservative value for the PCI configuration settings */ outl(val, card->io_port + CSR0); @@ -617,23 +617,23 @@ static void setup_descriptors(struct xircom_private *card) /* Rx Descr2: address of the buffer we store the buffer at the 2nd half of the page */ - + address = (unsigned long) card->rx_dma_handle; card->rx_buffer[i*4 + 2] = cpu_to_le32(address + bufferoffsets[i]); /* Rx Desc3: address of 2nd buffer -> 0 */ card->rx_buffer[i*4 + 3] = 0; } - + wmb(); /* Write the receive descriptor ring address to the card */ address = (unsigned long) card->rx_dma_handle; - val = cpu_to_le32(address); + val = cpu_to_le32(address); outl(val, card->io_port + CSR3); /* Receive descr list address */ /* transmit descriptors */ memset(card->tx_buffer, 0, 128); /* clear the descriptors */ - + for (i=0;i<NUMDESCRIPTORS;i++ ) { /* Tx Descr0: Empty, we own it, no errors -> 0x00000000 */ card->tx_buffer[i*4 + 0] = 0x00000000; @@ -641,7 +641,7 @@ static void setup_descriptors(struct xircom_private *card) card->tx_buffer[i*4 + 1] = 1536; if (i==NUMDESCRIPTORS-1) card->tx_buffer[i*4 + 1] |= (1 << 25); /* bit 25 is "last descriptor" */ - + /* Tx Descr2: address of the buffer we store the buffer at the 2nd half of the page */ address = (unsigned long) card->tx_dma_handle; @@ -748,7 +748,7 @@ static int receive_active(struct xircom_private *card) activate_receiver enables the receiver on the card. Before being allowed to active the receiver, the receiver must be completely de-activated. To achieve this, -this code actually disables the receiver first; then it waits for the +this code actually disables the receiver first; then it waits for the receiver to become inactive, then it activates the receiver and then it waits for the receiver to be active. @@ -762,13 +762,13 @@ static void activate_receiver(struct xircom_private *card) val = inl(card->io_port + CSR6); /* Operation mode */ - + /* If the "active" bit is set and the receiver is already active, no need to do the expensive thing */ if ((val&2) && (receive_active(card))) return; - - + + val = val & ~2; /* disable the receiver */ outl(val, card->io_port + CSR6); @@ -805,7 +805,7 @@ static void activate_receiver(struct xircom_private *card) /* deactivate_receiver disables the receiver on the card. -To achieve this this code disables the receiver first; +To achieve this this code disables the receiver first; then it waits for the receiver to become inactive. must be called with the lock held and interrupts disabled. @@ -840,7 +840,7 @@ static void deactivate_receiver(struct xircom_private *card) activate_transmitter enables the transmitter on the card. Before being allowed to active the transmitter, the transmitter must be completely de-activated. To achieve this, -this code actually disables the transmitter first; then it waits for the +this code actually disables the transmitter first; then it waits for the transmitter to become inactive, then it activates the transmitter and then it waits for the transmitter to be active again. @@ -856,7 +856,7 @@ static void activate_transmitter(struct xircom_private *card) val = inl(card->io_port + CSR6); /* Operation mode */ /* If the "active" bit is set and the receiver is already - active, no need to do the expensive thing */ + active, no need to do the expensive thing */ if ((val&(1<<13)) && (transmit_active(card))) return; @@ -896,7 +896,7 @@ static void activate_transmitter(struct xircom_private *card) /* deactivate_transmitter disables the transmitter on the card. -To achieve this this code disables the transmitter first; +To achieve this this code disables the transmitter first; then it waits for the transmitter to become inactive. must be called with the lock held and interrupts disabled. @@ -990,7 +990,7 @@ static void disable_all_interrupts(struct xircom_private *card) { unsigned int val; enter("enable_all_interrupts"); - + val = 0; /* disable all interrupts */ outl(val, card->io_port + CSR7); @@ -1031,8 +1031,8 @@ static int enable_promisc(struct xircom_private *card) unsigned int val; enter("enable_promisc"); - val = inl(card->io_port + CSR6); - val = val | (1 << 6); + val = inl(card->io_port + CSR6); + val = val | (1 << 6); outl(val, card->io_port + CSR6); leave("enable_promisc"); @@ -1042,7 +1042,7 @@ static int enable_promisc(struct xircom_private *card) -/* +/* link_status() checks the the links status and will return 0 for no link, 10 for 10mbit link and 100 for.. guess what. Must be called in locked state with interrupts disabled @@ -1051,15 +1051,15 @@ static int link_status(struct xircom_private *card) { unsigned int val; enter("link_status"); - + val = inb(card->io_port + CSR12); - + if (!(val&(1<<2))) /* bit 2 is 0 for 10mbit link, 1 for not an 10mbit link */ return 10; if (!(val&(1<<1))) /* bit 1 is 0 for 100mbit link, 1 for not an 100mbit link */ return 100; - - /* If we get here -> no link at all */ + + /* If we get here -> no link at all */ leave("link_status"); return 0; @@ -1071,7 +1071,7 @@ static int link_status(struct xircom_private *card) /* read_mac_address() reads the MAC address from the NIC and stores it in the "dev" structure. - + This function will take the spinlock itself and can, as a result, not be called with the lock helt. */ static void read_mac_address(struct xircom_private *card) @@ -1081,7 +1081,7 @@ static void read_mac_address(struct xircom_private *card) int i; enter("read_mac_address"); - + spin_lock_irqsave(&card->lock, flags); outl(1 << 12, card->io_port + CSR9); /* enable boot rom access */ @@ -1095,7 +1095,7 @@ static void read_mac_address(struct xircom_private *card) outl(i + 3, card->io_port + CSR10); data_count = inl(card->io_port + CSR9) & 0xff; if ((tuple == 0x22) && (data_id == 0x04) && (data_count == 0x06)) { - /* + /* * This is it. We have the data we want. */ for (j = 0; j < 6; j++) { @@ -1136,12 +1136,12 @@ static void transceiver_voodoo(struct xircom_private *card) spin_lock_irqsave(&card->lock, flags); outl(0x0008, card->io_port + CSR15); - udelay(25); + udelay(25); outl(0xa8050000, card->io_port + CSR15); udelay(25); outl(0xa00f0000, card->io_port + CSR15); udelay(25); - + spin_unlock_irqrestore(&card->lock, flags); netif_start_queue(card->dev); @@ -1163,15 +1163,15 @@ static void xircom_up(struct xircom_private *card) spin_lock_irqsave(&card->lock, flags); - + enable_link_interrupt(card); enable_transmit_interrupt(card); enable_receive_interrupt(card); enable_common_interrupts(card); enable_promisc(card); - + /* The card can have received packets already, read them away now */ - for (i=0;i<NUMDESCRIPTORS;i++) + for (i=0;i<NUMDESCRIPTORS;i++) investigate_read_descriptor(card->dev,card,i,bufferoffsets[i]); @@ -1185,15 +1185,15 @@ static void xircom_up(struct xircom_private *card) /* Bufferoffset is in BYTES */ static void investigate_read_descriptor(struct net_device *dev,struct xircom_private *card, int descnr, unsigned int bufferoffset) { - int status; - + int status; + enter("investigate_read_descriptor"); status = card->rx_buffer[4*descnr]; - + if ((status > 0)) { /* packet received */ - + /* TODO: discard error packets */ - + short pkt_len = ((status >> 16) & 0x7ff) - 4; /* minus 4, we don't want the CRC */ struct sk_buff *skb; @@ -1216,7 +1216,7 @@ static void investigate_read_descriptor(struct net_device *dev,struct xircom_pri dev->last_rx = jiffies; card->stats.rx_packets++; card->stats.rx_bytes += pkt_len; - + out: /* give the buffer back to the card */ card->rx_buffer[4*descnr] = 0x80000000; @@ -1234,9 +1234,9 @@ static void investigate_write_descriptor(struct net_device *dev, struct xircom_p int status; enter("investigate_write_descriptor"); - + status = card->tx_buffer[4*descnr]; -#if 0 +#if 0 if (status & 0x8000) { /* Major error */ printk(KERN_ERR "Major transmit error status %x \n", status); card->tx_buffer[4*descnr] = 0; @@ -1258,7 +1258,7 @@ static void investigate_write_descriptor(struct net_device *dev, struct xircom_p } leave("investigate_write_descriptor"); - + } @@ -1271,8 +1271,8 @@ static int __init xircom_init(void) static void __exit xircom_exit(void) { pci_unregister_driver(&xircom_ops); -} +} -module_init(xircom_init) +module_init(xircom_init) module_exit(xircom_exit) |
