dl2k.c
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上传日期:2013-04-10
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文件大小:45k
- /* D-Link DL2000-based Gigabit Ethernet Adapter Linux driver */
- /*
- Copyright (c) 2001, 2002 by D-Link Corporation
- Written by Edward Peng.<edward_peng@dlink.com.tw>
- Created 03-May-2001, base on Linux' sundance.c.
- This program is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
- */
- /*
- Rev Date Description
- ==========================================================================
- 0.01 2001/05/03 Created DL2000-based linux driver
- 0.02 2001/05/21 Added VLAN and hardware checksum support.
- 1.00 2001/06/26 Added jumbo frame support.
- 1.01 2001/08/21 Added two parameters, rx_coalesce and rx_timeout.
- 1.02 2001/10/08 Supported fiber media.
- Added flow control parameters.
- 1.03 2001/10/12 Changed the default media to 1000mbps_fd for
- the fiber devices.
- 1.04 2001/11/08 Fixed Tx stopped when tx very busy.
- 1.05 2001/11/22 Fixed Tx stopped when unidirectional tx busy.
- 1.06 2001/12/13 Fixed disconnect bug at 10Mbps mode.
- Fixed tx_full flag incorrect.
- Added tx_coalesce paramter.
- 1.07 2002/01/03 Fixed miscount of RX frame error.
- 1.08 2002/01/17 Fixed the multicast bug.
- 1.09 2002/03/07 Move rx-poll-now to re-fill loop.
- Added rio_timer() to watch rx buffers.
- 1.10 2002/04/16 Fixed miscount of carrier error.
- 1.11 2002/05/23 Added ISR schedule scheme.
- Fixed miscount of rx frame error for DGE-550SX.
- Fixed VLAN bug.
- 1.12 2002/06/13 Lock tx_coalesce=1 on 10/100Mbps mode.
- */
- #include "dl2k.h"
- static char version[] __devinitdata =
- KERN_INFO "D-Link DL2000-based linux driver v1.12 2002/06/13n";
- #define MAX_UNITS 8
- static int mtu[MAX_UNITS];
- static int vlan[MAX_UNITS];
- static int jumbo[MAX_UNITS];
- static char *media[MAX_UNITS];
- static int tx_flow=-1;
- static int rx_flow=-1;
- static int copy_thresh;
- static int rx_coalesce=10; /* Rx frame count each interrupt */
- static int rx_timeout=200; /* Rx DMA wait time in 640ns increments */
- static int tx_coalesce=16; /* HW xmit count each TxDMAComplete */
- MODULE_AUTHOR ("Edward Peng");
- MODULE_DESCRIPTION ("D-Link DL2000-based Gigabit Ethernet Adapter");
- MODULE_LICENSE("GPL");
- MODULE_PARM (mtu, "1-" __MODULE_STRING (MAX_UNITS) "i");
- MODULE_PARM (media, "1-" __MODULE_STRING (MAX_UNITS) "s");
- MODULE_PARM (vlan, "1-" __MODULE_STRING (MAX_UNITS) "i");
- MODULE_PARM (jumbo, "1-" __MODULE_STRING (MAX_UNITS) "i");
- MODULE_PARM (tx_flow, "i");
- MODULE_PARM (rx_flow, "i");
- MODULE_PARM (copy_thresh, "i");
- MODULE_PARM (rx_coalesce, "i"); /* Rx frame count each interrupt */
- MODULE_PARM (rx_timeout, "i"); /* Rx DMA wait time in 64ns increments */
- MODULE_PARM (tx_coalesce, "i"); /* HW xmit count each TxDMAComplete */
- /* Enable the default interrupts */
- #define DEFAULT_INTR (RxDMAComplete | HostError | IntRequested | TxDMAComplete|
- UpdateStats | LinkEvent)
- #define EnableInt()
- writew(DEFAULT_INTR, ioaddr + IntEnable)
- static int max_intrloop = 50;
- static int multicast_filter_limit = 0x40;
- static int rio_open (struct net_device *dev);
- static void rio_timer (unsigned long data);
- static void rio_tx_timeout (struct net_device *dev);
- static void alloc_list (struct net_device *dev);
- static int start_xmit (struct sk_buff *skb, struct net_device *dev);
- static void rio_interrupt (int irq, void *dev_instance, struct pt_regs *regs);
- static void rio_free_tx (struct net_device *dev, int irq);
- static void tx_error (struct net_device *dev, int tx_status);
- static int receive_packet (struct net_device *dev);
- static void rio_error (struct net_device *dev, int int_status);
- static int change_mtu (struct net_device *dev, int new_mtu);
- static void set_multicast (struct net_device *dev);
- static struct net_device_stats *get_stats (struct net_device *dev);
- static int clear_stats (struct net_device *dev);
- static int rio_ioctl (struct net_device *dev, struct ifreq *rq, int cmd);
- static int rio_close (struct net_device *dev);
- static int find_miiphy (struct net_device *dev);
- static int parse_eeprom (struct net_device *dev);
- static int read_eeprom (long ioaddr, int eep_addr);
- static int mii_wait_link (struct net_device *dev, int wait);
- static int mii_set_media (struct net_device *dev);
- static int mii_get_media (struct net_device *dev);
- static int mii_set_media_pcs (struct net_device *dev);
- static int mii_get_media_pcs (struct net_device *dev);
- static int mii_read (struct net_device *dev, int phy_addr, int reg_num);
- static int mii_write (struct net_device *dev, int phy_addr, int reg_num,
- u16 data);
- static int __devinit
- rio_probe1 (struct pci_dev *pdev, const struct pci_device_id *ent)
- {
- struct net_device *dev;
- struct netdev_private *np;
- static int card_idx;
- int chip_idx = ent->driver_data;
- int err, irq;
- long ioaddr;
- static int version_printed;
- void *ring_space;
- dma_addr_t ring_dma;
- if (!version_printed++)
- printk ("%s", version);
- err = pci_enable_device (pdev);
- if (err)
- return err;
- irq = pdev->irq;
- err = pci_request_regions (pdev, "dl2k");
- if (err)
- goto err_out_disable;
- pci_set_master (pdev);
- dev = alloc_etherdev (sizeof (*np));
- if (!dev) {
- err = -ENOMEM;
- goto err_out_res;
- }
- SET_MODULE_OWNER (dev);
- #ifdef MEM_MAPPING
- ioaddr = pci_resource_start (pdev, 1);
- ioaddr = (long) ioremap (ioaddr, RIO_IO_SIZE);
- if (!ioaddr) {
- err = -ENOMEM;
- goto err_out_dev;
- }
- #else
- ioaddr = pci_resource_start (pdev, 0);
- #endif
- dev->base_addr = ioaddr;
- dev->irq = irq;
- np = dev->priv;
- np->chip_id = chip_idx;
- np->pdev = pdev;
- spin_lock_init (&np->tx_lock);
- spin_lock_init (&np->rx_lock);
- /* Parse manual configuration */
- np->an_enable = 1;
- np->tx_coalesce = 1;
- if (card_idx < MAX_UNITS) {
- if (media[card_idx] != NULL) {
- np->an_enable = 0;
- if (strcmp (media[card_idx], "auto") == 0 ||
- strcmp (media[card_idx], "autosense") == 0 ||
- strcmp (media[card_idx], "0") == 0 ) {
- np->an_enable = 2;
- } else if (strcmp (media[card_idx], "100mbps_fd") == 0 ||
- strcmp (media[card_idx], "4") == 0) {
- np->speed = 100;
- np->full_duplex = 1;
- } else if (strcmp (media[card_idx], "100mbps_hd") == 0
- || strcmp (media[card_idx], "3") == 0) {
- np->speed = 100;
- np->full_duplex = 0;
- } else if (strcmp (media[card_idx], "10mbps_fd") == 0 ||
- strcmp (media[card_idx], "2") == 0) {
- np->speed = 10;
- np->full_duplex = 1;
- } else if (strcmp (media[card_idx], "10mbps_hd") == 0 ||
- strcmp (media[card_idx], "1") == 0) {
- np->speed = 10;
- np->full_duplex = 0;
- } else if (strcmp (media[card_idx], "1000mbps_fd") == 0 ||
- strcmp (media[card_idx], "6") == 0) {
- np->speed=1000;
- np->full_duplex=1;
- } else if (strcmp (media[card_idx], "1000mbps_hd") == 0 ||
- strcmp (media[card_idx], "5") == 0) {
- np->speed = 1000;
- np->full_duplex = 0;
- } else {
- np->an_enable = 1;
- }
- }
- if (jumbo[card_idx] != 0) {
- np->jumbo = 1;
- dev->mtu = MAX_JUMBO;
- } else {
- np->jumbo = 0;
- if (mtu[card_idx] > 0 && mtu[card_idx] < PACKET_SIZE)
- dev->mtu = mtu[card_idx];
- }
- np->vlan = (vlan[card_idx] > 0 && vlan[card_idx] < 4096) ?
- vlan[card_idx] : 0;
- if (rx_coalesce > 0 && rx_timeout > 0) {
- np->rx_coalesce = rx_coalesce;
- np->rx_timeout = rx_timeout;
- np->coalesce = 1;
- }
- np->tx_flow = (tx_flow == 0) ? 0 : 1;
- np->rx_flow = (rx_flow == 0) ? 0 : 1;
- if (tx_coalesce < 1)
- tx_coalesce = 1;
- else if (tx_coalesce > TX_RING_SIZE-1)
- tx_coalesce = TX_RING_SIZE - 1;
- }
- dev->open = &rio_open;
- dev->hard_start_xmit = &start_xmit;
- dev->stop = &rio_close;
- dev->get_stats = &get_stats;
- dev->set_multicast_list = &set_multicast;
- dev->do_ioctl = &rio_ioctl;
- dev->tx_timeout = &rio_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
- dev->change_mtu = &change_mtu;
- #if 0
- dev->features = NETIF_F_IP_CSUM;
- #endif
- pci_set_drvdata (pdev, dev);
- ring_space = pci_alloc_consistent (pdev, TX_TOTAL_SIZE, &ring_dma);
- if (!ring_space)
- goto err_out_iounmap;
- np->tx_ring = (struct netdev_desc *) ring_space;
- np->tx_ring_dma = ring_dma;
- ring_space = pci_alloc_consistent (pdev, RX_TOTAL_SIZE, &ring_dma);
- if (!ring_space)
- goto err_out_unmap_tx;
- np->rx_ring = (struct netdev_desc *) ring_space;
- np->rx_ring_dma = ring_dma;
- /* Parse eeprom data */
- parse_eeprom (dev);
- /* Find PHY address */
- err = find_miiphy (dev);
- if (err)
- goto err_out_unmap_rx;
-
- /* Fiber device? */
- np->phy_media = (readw(ioaddr + ASICCtrl) & PhyMedia) ? 1 : 0;
- np->link_status = 0;
- /* Set media and reset PHY */
- if (np->phy_media) {
- /* default 1000mbps_fd for fiber deivices */
- if (np->an_enable == 1) {
- np->an_enable = 0;
- np->speed = 1000;
- np->full_duplex = 1;
- } else if (np->an_enable == 2) {
- np->an_enable = 1;
- }
- mii_set_media_pcs (dev);
- } else {
- /* Auto-Negotiation is mandatory for 1000BASE-T,
- IEEE 802.3ab Annex 28D page 14 */
- if (np->speed == 1000)
- np->an_enable = 1;
- mii_set_media (dev);
- }
- pci_read_config_byte(pdev, PCI_REVISION_ID, &np->pci_rev_id);
- /* Reset all logic functions */
- writew (GlobalReset | DMAReset | FIFOReset | NetworkReset | HostReset,
- ioaddr + ASICCtrl + 2);
- err = register_netdev (dev);
- if (err)
- goto err_out_unmap_rx;
- card_idx++;
- printk (KERN_INFO "%s: %s, %02x:%02x:%02x:%02x:%02x:%02x, IRQ %dn",
- dev->name, np->name,
- dev->dev_addr[0], dev->dev_addr[1], dev->dev_addr[2],
- dev->dev_addr[3], dev->dev_addr[4], dev->dev_addr[5], irq);
- if (tx_coalesce > 1)
- printk(KERN_INFO "tx_coalesce:t%d packetsn",
- tx_coalesce);
- if (np->coalesce)
- printk(KERN_INFO "rx_coalesce:t%d packetsn"
- KERN_INFO "rx_timeout: t%d nsn",
- np->rx_coalesce, np->rx_timeout*640);
- if (np->vlan)
- printk(KERN_INFO "vlan(id):t%dn", np->vlan);
- return 0;
- err_out_unmap_rx:
- pci_free_consistent (pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
- err_out_unmap_tx:
- pci_free_consistent (pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
- err_out_iounmap:
- #ifdef MEM_MAPPING
- iounmap ((void *) ioaddr);
- err_out_dev:
- #endif
- kfree (dev);
- err_out_res:
- pci_release_regions (pdev);
- err_out_disable:
- pci_disable_device (pdev);
- return err;
- }
- int
- find_miiphy (struct net_device *dev)
- {
- int i, phy_found = 0;
- struct netdev_private *np;
- long ioaddr;
- np = dev->priv;
- ioaddr = dev->base_addr;
- np->phy_addr = 1;
- for (i = 31; i >= 0; i--) {
- int mii_status = mii_read (dev, i, 1);
- if (mii_status != 0xffff && mii_status != 0x0000) {
- np->phy_addr = i;
- phy_found++;
- }
- }
- if (!phy_found) {
- printk (KERN_ERR "%s: No MII PHY found!n", dev->name);
- return -ENODEV;
- }
- return 0;
- }
- int
- parse_eeprom (struct net_device *dev)
- {
- int i, j;
- long ioaddr = dev->base_addr;
- u8 sromdata[256];
- u8 *psib;
- u32 crc;
- PSROM_t psrom = (PSROM_t) sromdata;
- struct netdev_private *np = dev->priv;
- int cid, next;
- /* Read eeprom */
- for (i = 0; i < 128; i++) {
- ((u16 *) sromdata)[i] = le16_to_cpu (read_eeprom (ioaddr, i));
- }
- /* Check CRC */
- crc = ~ether_crc_le (256 - 4, sromdata);
- if (psrom->crc != crc) {
- printk (KERN_ERR "%s: EEPROM data CRC error.n", dev->name);
- return -1;
- }
- /* Set MAC address */
- for (i = 0; i < 6; i++)
- dev->dev_addr[i] = psrom->mac_addr[i];
- /* Parse Software Infomation Block */
- i = 0x30;
- psib = (u8 *) sromdata;
- do {
- cid = psib[i++];
- next = psib[i++];
- if ((cid == 0 && next == 0) || (cid == 0xff && next == 0xff)) {
- printk (KERN_ERR "Cell data errorn");
- return -1;
- }
- switch (cid) {
- case 0: /* Format version */
- break;
- case 1: /* End of cell */
- return 0;
- case 2: /* Duplex Polarity */
- np->duplex_polarity = psib[i];
- writeb (readb (ioaddr + PhyCtrl) | psib[i],
- ioaddr + PhyCtrl);
- break;
- case 3: /* Wake Polarity */
- np->wake_polarity = psib[i];
- break;
- case 9: /* Adapter description */
- j = (next - i > 255) ? 255 : next - i;
- memcpy (np->name, &(psib[i]), j);
- break;
- case 4:
- case 5:
- case 6:
- case 7:
- case 8: /* Reversed */
- break;
- default: /* Unknown cell */
- return -1;
- }
- i = next;
- } while (1);
- return 0;
- }
- static int
- rio_open (struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- long ioaddr = dev->base_addr;
- int i;
- i = request_irq (dev->irq, &rio_interrupt, SA_SHIRQ, dev->name, dev);
- if (i)
- return i;
- /* DebugCtrl bit 4, 5, 9 must set */
- writel (readl (ioaddr + DebugCtrl) | 0x0230, ioaddr + DebugCtrl);
- /* Jumbo frame */
- if (np->jumbo != 0)
- writew (MAX_JUMBO+14, ioaddr + MaxFrameSize);
- alloc_list (dev);
- /* Get station address */
- for (i = 0; i < 6; i++)
- writeb (dev->dev_addr[i], ioaddr + StationAddr0 + i);
- set_multicast (dev);
- if (np->coalesce) {
- writel (np->rx_coalesce | np->rx_timeout << 16,
- ioaddr + RxDMAIntCtrl);
- }
- /* Set RIO to poll every N*320nsec. */
- writeb (0x20, ioaddr + RxDMAPollPeriod);
- writeb (0xff, ioaddr + TxDMAPollPeriod);
- writeb (0x30, ioaddr + RxDMABurstThresh);
- writeb (0x30, ioaddr + RxDMAUrgentThresh);
- /* clear statistics */
- clear_stats (dev);
- /* VLAN supported */
- if (np->vlan) {
- /* priority field in RxDMAIntCtrl */
- writel (readl(ioaddr + RxDMAIntCtrl) | 0x7 << 10,
- ioaddr + RxDMAIntCtrl);
- /* VLANId */
- writew (np->vlan, ioaddr + VLANId);
- /* Length/Type should be 0x8100 */
- writel (0x8100 << 16 | np->vlan, ioaddr + VLANTag);
- /* Enable AutoVLANuntagging, but disable AutoVLANtagging.
- VLAN information tagged by TFC' VID, CFI fields. */
- writel (readl (ioaddr + MACCtrl) | AutoVLANuntagging,
- ioaddr + MACCtrl);
- }
- /* Enable default interrupts */
- EnableInt ();
- init_timer (&np->timer);
- np->timer.expires = jiffies + 1*HZ;
- np->timer.data = (unsigned long) dev;
- np->timer.function = &rio_timer;
- add_timer (&np->timer);
- /* Start Tx/Rx */
- writel (readl (ioaddr + MACCtrl) | StatsEnable | RxEnable | TxEnable,
- ioaddr + MACCtrl);
- netif_start_queue (dev);
- return 0;
- }
- static void
- rio_timer (unsigned long data)
- {
- struct net_device *dev = (struct net_device *)data;
- struct netdev_private *np = dev->priv;
- unsigned int entry;
- int next_tick = 1*HZ;
- unsigned long flags;
- spin_lock_irqsave(&np->rx_lock, flags);
- /* Recover rx ring exhausted error */
- if (np->cur_rx - np->old_rx >= RX_RING_SIZE) {
- printk(KERN_INFO "Try to recover rx ring exhausted...n");
- /* Re-allocate skbuffs to fill the descriptor ring */
- for (; np->cur_rx - np->old_rx > 0; np->old_rx++) {
- struct sk_buff *skb;
- entry = np->old_rx % RX_RING_SIZE;
- /* Dropped packets don't need to re-allocate */
- if (np->rx_skbuff[entry] == NULL) {
- skb = dev_alloc_skb (np->rx_buf_sz);
- if (skb == NULL) {
- np->rx_ring[entry].fraginfo = 0;
- printk (KERN_INFO
- "%s: Still unable to re-allocate Rx skbuff.#%dn",
- dev->name, entry);
- break;
- }
- np->rx_skbuff[entry] = skb;
- skb->dev = dev;
- /* 16 byte align the IP header */
- skb_reserve (skb, 2);
- np->rx_ring[entry].fraginfo =
- cpu_to_le64 (pci_map_single
- (np->pdev, skb->tail, np->rx_buf_sz,
- PCI_DMA_FROMDEVICE));
- }
- np->rx_ring[entry].fraginfo |=
- cpu_to_le64 (np->rx_buf_sz) << 48;
- np->rx_ring[entry].status = 0;
- } /* end for */
- } /* end if */
- spin_unlock_irqrestore (&np->rx_lock, flags);
- np->timer.expires = jiffies + next_tick;
- add_timer(&np->timer);
- }
-
- static void
- rio_tx_timeout (struct net_device *dev)
- {
- long ioaddr = dev->base_addr;
- printk (KERN_INFO "%s: Tx timed out (%4.4x), is buffer full?n",
- dev->name, readl (ioaddr + TxStatus));
- rio_free_tx(dev, 0);
- dev->if_port = 0;
- dev->trans_start = jiffies;
- }
- /* allocate and initialize Tx and Rx descriptors */
- static void
- alloc_list (struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- int i;
- np->cur_rx = np->cur_tx = 0;
- np->old_rx = np->old_tx = 0;
- np->rx_buf_sz = (dev->mtu <= 1500 ? PACKET_SIZE : dev->mtu + 32);
- /* Initialize Tx descriptors, TFDListPtr leaves in start_xmit(). */
- for (i = 0; i < TX_RING_SIZE; i++) {
- np->tx_skbuff[i] = 0;
- np->tx_ring[i].status = cpu_to_le64 (TFDDone);
- np->tx_ring[i].next_desc = cpu_to_le64 (np->tx_ring_dma +
- ((i+1)%TX_RING_SIZE) *
- sizeof (struct netdev_desc));
- }
- /* Initialize Rx descriptors */
- for (i = 0; i < RX_RING_SIZE; i++) {
- np->rx_ring[i].next_desc = cpu_to_le64 (np->rx_ring_dma +
- ((i + 1) % RX_RING_SIZE) *
- sizeof (struct netdev_desc));
- np->rx_ring[i].status = 0;
- np->rx_ring[i].fraginfo = 0;
- np->rx_skbuff[i] = 0;
- }
- /* Allocate the rx buffers */
- for (i = 0; i < RX_RING_SIZE; i++) {
- /* Allocated fixed size of skbuff */
- struct sk_buff *skb = dev_alloc_skb (np->rx_buf_sz);
- np->rx_skbuff[i] = skb;
- if (skb == NULL) {
- printk (KERN_ERR
- "%s: alloc_list: allocate Rx buffer error! ",
- dev->name);
- break;
- }
- skb->dev = dev; /* Mark as being used by this device. */
- skb_reserve (skb, 2); /* 16 byte align the IP header. */
- /* Rubicon now supports 40 bits of addressing space. */
- np->rx_ring[i].fraginfo =
- cpu_to_le64 ( pci_map_single (
- np->pdev, skb->tail, np->rx_buf_sz,
- PCI_DMA_FROMDEVICE));
- np->rx_ring[i].fraginfo |= cpu_to_le64 (np->rx_buf_sz) << 48;
- }
- /* Set RFDListPtr */
- writel (cpu_to_le32 (np->rx_ring_dma), dev->base_addr + RFDListPtr0);
- writel (0, dev->base_addr + RFDListPtr1);
- return;
- }
- static int
- start_xmit (struct sk_buff *skb, struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- struct netdev_desc *txdesc;
- unsigned entry;
- u32 ioaddr;
- u64 tfc_vlan_tag = 0;
- if (np->link_status == 0) { /* Link Down */
- dev_kfree_skb(skb);
- return 0;
- }
- ioaddr = dev->base_addr;
- entry = np->cur_tx % TX_RING_SIZE;
- np->tx_skbuff[entry] = skb;
- txdesc = &np->tx_ring[entry];
- #if 0
- if (skb->ip_summed == CHECKSUM_HW) {
- txdesc->status |=
- cpu_to_le64 (TCPChecksumEnable | UDPChecksumEnable |
- IPChecksumEnable);
- }
- #endif
- if (np->vlan) {
- txdesc->status |=
- cpu_to_le64 (VLANTagInsert) |
- (cpu_to_le64 (np->vlan) << 32) |
- (cpu_to_le64 (skb->priority) << 45);
- }
- txdesc->fraginfo = cpu_to_le64 (pci_map_single (np->pdev, skb->data,
- skb->len,
- PCI_DMA_TODEVICE));
- txdesc->fraginfo |= cpu_to_le64 (skb->len) << 48;
- /* DL2K bug: DMA fails to get next descriptor ptr in 10Mbps mode
- * Work around: Always use 1 descriptor in 10Mbps mode */
- if (entry % np->tx_coalesce == 0 || np->speed == 10)
- txdesc->status = cpu_to_le64 (entry | tfc_vlan_tag |
- WordAlignDisable |
- TxDMAIndicate |
- (1 << FragCountShift));
- else
- txdesc->status = cpu_to_le64 (entry | tfc_vlan_tag |
- WordAlignDisable |
- (1 << FragCountShift));
- /* TxDMAPollNow */
- writel (readl (ioaddr + DMACtrl) | 0x00001000, ioaddr + DMACtrl);
- /* Schedule ISR */
- writel(10000, ioaddr + CountDown);
- np->cur_tx = (np->cur_tx + 1) % TX_RING_SIZE;
- if ((np->cur_tx - np->old_tx + TX_RING_SIZE) % TX_RING_SIZE
- < TX_QUEUE_LEN - 1 && np->speed != 10) {
- /* do nothing */
- } else if (!netif_queue_stopped(dev)) {
- netif_stop_queue (dev);
- }
- /* The first TFDListPtr */
- if (readl (dev->base_addr + TFDListPtr0) == 0) {
- writel (np->tx_ring_dma + entry * sizeof (struct netdev_desc),
- dev->base_addr + TFDListPtr0);
- writel (0, dev->base_addr + TFDListPtr1);
- }
-
- /* NETDEV WATCHDOG timer */
- dev->trans_start = jiffies;
- return 0;
- }
- static void
- rio_interrupt (int irq, void *dev_instance, struct pt_regs *rgs)
- {
- struct net_device *dev = dev_instance;
- struct netdev_private *np;
- unsigned int_status;
- long ioaddr;
- int cnt = max_intrloop;
- ioaddr = dev->base_addr;
- np = dev->priv;
- while (1) {
- int_status = readw (ioaddr + IntStatus);
- writew (int_status, ioaddr + IntStatus);
- int_status &= DEFAULT_INTR;
- if (int_status == 0 || --cnt < 0)
- break;
- /* Processing received packets */
- if (int_status & RxDMAComplete)
- receive_packet (dev);
- /* TxDMAComplete interrupt */
- if ((int_status & (TxDMAComplete|IntRequested))) {
- int tx_status;
- tx_status = readl (ioaddr + TxStatus);
- if (tx_status & 0x01)
- tx_error (dev, tx_status);
- /* Free used tx skbuffs */
- rio_free_tx (dev, 1);
- }
- /* Handle uncommon events */
- if (int_status &
- (HostError | LinkEvent | UpdateStats))
- rio_error (dev, int_status);
- }
- if (np->cur_tx != np->old_tx)
- writel (100, ioaddr + CountDown);
- }
- static void
- rio_free_tx (struct net_device *dev, int irq)
- {
- struct netdev_private *np = (struct netdev_private *) dev->priv;
- int entry = np->old_tx % TX_RING_SIZE;
- int tx_use = 0;
- long flag = 0;
-
- if (irq)
- spin_lock_irqsave(&np->tx_lock, flag);
- else
- spin_lock(&np->tx_lock);
- /* Free used tx skbuffs */
- while (entry != np->cur_tx) {
- struct sk_buff *skb;
- if (!(np->tx_ring[entry].status & TFDDone))
- break;
- skb = np->tx_skbuff[entry];
- pci_unmap_single (np->pdev,
- np->tx_ring[entry].fraginfo,
- skb->len, PCI_DMA_TODEVICE);
- if (irq)
- dev_kfree_skb_irq (skb);
- else
- dev_kfree_skb (skb);
- np->tx_skbuff[entry] = 0;
- entry = (entry + 1) % TX_RING_SIZE;
- tx_use++;
- }
- if (irq)
- spin_unlock_irqrestore(&np->tx_lock, flag);
- else
- spin_unlock(&np->tx_lock);
- np->old_tx = entry;
- /* If the ring is no longer full, clear tx_full and
- call netif_wake_queue() */
- if (netif_queue_stopped(dev) &&
- ((np->cur_tx - np->old_tx + TX_RING_SIZE) % TX_RING_SIZE
- < TX_QUEUE_LEN - 1 || np->speed == 10)) {
- netif_wake_queue (dev);
- }
- }
- static void
- tx_error (struct net_device *dev, int tx_status)
- {
- struct netdev_private *np;
- long ioaddr = dev->base_addr;
- int frame_id;
- int i;
- np = dev->priv;
- frame_id = (tx_status & 0xffff0000);
- printk (KERN_ERR "%s: Transmit error, TxStatus %4.4x, FrameId %d.n",
- dev->name, tx_status, frame_id);
- np->stats.tx_errors++;
- /* Ttransmit Underrun */
- if (tx_status & 0x10) {
- np->stats.tx_fifo_errors++;
- writew (readw (ioaddr + TxStartThresh) + 0x10,
- ioaddr + TxStartThresh);
- /* Transmit Underrun need to set TxReset, DMARest, FIFOReset */
- writew (TxReset | DMAReset | FIFOReset | NetworkReset,
- ioaddr + ASICCtrl + 2);
- /* Wait for ResetBusy bit clear */
- for (i = 50; i > 0; i--) {
- if ((readw (ioaddr + ASICCtrl + 2) & ResetBusy) == 0)
- break;
- mdelay (1);
- }
- rio_free_tx (dev, 1);
- /* Reset TFDListPtr */
- writel (np->tx_ring_dma +
- np->old_tx * sizeof (struct netdev_desc),
- dev->base_addr + TFDListPtr0);
- writel (0, dev->base_addr + TFDListPtr1);
- /* Let TxStartThresh stay default value */
- }
- /* Late Collision */
- if (tx_status & 0x04) {
- np->stats.tx_fifo_errors++;
- /* TxReset and clear FIFO */
- writew (TxReset | FIFOReset, ioaddr + ASICCtrl + 2);
- /* Wait reset done */
- for (i = 50; i > 0; i--) {
- if ((readw (ioaddr + ASICCtrl + 2) & ResetBusy) == 0)
- break;
- mdelay (1);
- }
- /* Let TxStartThresh stay default value */
- }
- /* Maximum Collisions */
- if (tx_status & 0x08)
- np->stats.collisions++;
- /* Restart the Tx */
- writel (readw (dev->base_addr + MACCtrl) | TxEnable, ioaddr + MACCtrl);
- }
- static int
- receive_packet (struct net_device *dev)
- {
- struct netdev_private *np = (struct netdev_private *) dev->priv;
- int entry = np->cur_rx % RX_RING_SIZE;
- int cnt = 30;
- /* If RFDDone, FrameStart and FrameEnd set, there is a new packet in. */
- while (1) {
- struct netdev_desc *desc = &np->rx_ring[entry];
- int pkt_len;
- u64 frame_status;
- if (!(desc->status & RFDDone) ||
- !(desc->status & FrameStart) || !(desc->status & FrameEnd))
- break;
- /* Chip omits the CRC. */
- pkt_len = le64_to_cpu (desc->status & 0xffff);
- frame_status = le64_to_cpu (desc->status);
- if (--cnt < 0)
- break;
- pci_dma_sync_single (np->pdev, desc->fraginfo, np->rx_buf_sz,
- PCI_DMA_FROMDEVICE);
- /* Update rx error statistics, drop packet. */
- if (frame_status & RFS_Errors) {
- np->stats.rx_errors++;
- if (frame_status & (RxRuntFrame | RxLengthError))
- np->stats.rx_length_errors++;
- if (frame_status & RxFCSError)
- np->stats.rx_crc_errors++;
- if (frame_status & RxAlignmentError && np->speed != 1000)
- np->stats.rx_frame_errors++;
- if (frame_status & RxFIFOOverrun)
- np->stats.rx_fifo_errors++;
- } else {
- struct sk_buff *skb;
- /* Small skbuffs for short packets */
- if (pkt_len > copy_thresh) {
- pci_unmap_single (np->pdev, desc->fraginfo,
- np->rx_buf_sz,
- PCI_DMA_FROMDEVICE);
- skb_put (skb = np->rx_skbuff[entry], pkt_len);
- np->rx_skbuff[entry] = NULL;
- } else if ((skb = dev_alloc_skb (pkt_len + 2)) != NULL) {
- skb->dev = dev;
- /* 16 byte align the IP header */
- skb_reserve (skb, 2);
- eth_copy_and_sum (skb,
- np->rx_skbuff[entry]->tail,
- pkt_len, 0);
- skb_put (skb, pkt_len);
- }
- skb->protocol = eth_type_trans (skb, dev);
- #if 0
- /* Checksum done by hw, but csum value unavailable. */
- if (np->pci_rev_id >= 0x0c &&
- !(frame_status & (TCPError | UDPError | IPError))) {
- skb->ip_summed = CHECKSUM_UNNECESSARY;
- }
- #endif
- netif_rx (skb);
- dev->last_rx = jiffies;
- }
- entry = (entry + 1) % RX_RING_SIZE;
- }
- spin_lock(&np->rx_lock);
- np->cur_rx = entry;
- /* Re-allocate skbuffs to fill the descriptor ring */
- entry = np->old_rx;
- while (entry != np->cur_rx) {
- struct sk_buff *skb;
- /* Dropped packets don't need to re-allocate */
- if (np->rx_skbuff[entry] == NULL) {
- skb = dev_alloc_skb (np->rx_buf_sz);
- if (skb == NULL) {
- np->rx_ring[entry].fraginfo = 0;
- printk (KERN_INFO
- "%s: receive_packet: "
- "Unable to re-allocate Rx skbuff.#%dn",
- dev->name, entry);
- break;
- }
- np->rx_skbuff[entry] = skb;
- skb->dev = dev;
- /* 16 byte align the IP header */
- skb_reserve (skb, 2);
- np->rx_ring[entry].fraginfo =
- cpu_to_le64 (pci_map_single
- (np->pdev, skb->tail, np->rx_buf_sz,
- PCI_DMA_FROMDEVICE));
- }
- np->rx_ring[entry].fraginfo |=
- cpu_to_le64 (np->rx_buf_sz) << 48;
- np->rx_ring[entry].status = 0;
- entry = (entry + 1) % RX_RING_SIZE;
- }
- np->old_rx = entry;
- spin_unlock(&np->rx_lock);
- return 0;
- }
- static void
- rio_error (struct net_device *dev, int int_status)
- {
- long ioaddr = dev->base_addr;
- struct netdev_private *np = dev->priv;
- u16 macctrl;
- /* Link change event */
- if (int_status & LinkEvent) {
- if (mii_wait_link (dev, 10) == 0) {
- printk (KERN_INFO "%s: Link upn", dev->name);
- if (np->phy_media)
- mii_get_media_pcs (dev);
- else
- mii_get_media (dev);
- if (np->speed == 1000)
- np->tx_coalesce = tx_coalesce;
- else
- np->tx_coalesce = 1;
- macctrl = 0;
- macctrl |= (np->vlan) ? AutoVLANuntagging : 0;
- macctrl |= (np->full_duplex) ? DuplexSelect : 0;
- macctrl |= (np->tx_flow) ?
- TxFlowControlEnable : 0;
- macctrl |= (np->rx_flow) ?
- RxFlowControlEnable : 0;
- writew(macctrl, ioaddr + MACCtrl);
- np->link_status = 1;
- netif_carrier_on(dev);
- } else {
- printk (KERN_INFO "%s: Link offn", dev->name);
- np->link_status = 0;
- netif_carrier_off(dev);
- }
- }
- /* UpdateStats statistics registers */
- if (int_status & UpdateStats) {
- get_stats (dev);
- }
- /* PCI Error, a catastronphic error related to the bus interface
- occurs, set GlobalReset and HostReset to reset. */
- if (int_status & HostError) {
- printk (KERN_ERR "%s: HostError! IntStatus %4.4x.n",
- dev->name, int_status);
- writew (GlobalReset | HostReset, ioaddr + ASICCtrl + 2);
- mdelay (500);
- }
- }
- static struct net_device_stats *
- get_stats (struct net_device *dev)
- {
- long ioaddr = dev->base_addr;
- struct netdev_private *np = dev->priv;
- int i;
- unsigned int stat_reg;
- /* All statistics registers need to be acknowledged,
- else statistic overflow could cause problems */
-
- np->stats.rx_packets += readl (ioaddr + FramesRcvOk);
- np->stats.tx_packets += readl (ioaddr + FramesXmtOk);
- np->stats.rx_bytes += readl (ioaddr + OctetRcvOk);
- np->stats.tx_bytes += readl (ioaddr + OctetXmtOk);
- np->stats.multicast = readl (ioaddr + McstFramesRcvdOk);
- np->stats.collisions += readl (ioaddr + SingleColFrames)
- + readl (ioaddr + MultiColFrames);
-
- /* detailed tx errors */
- stat_reg = readw (ioaddr + FramesAbortXSColls);
- np->stats.tx_aborted_errors += stat_reg;
- np->stats.tx_errors += stat_reg;
- stat_reg = readw (ioaddr + CarrierSenseErrors);
- np->stats.tx_carrier_errors += stat_reg;
- np->stats.tx_errors += stat_reg;
- /* Clear all other statistic register. */
- readl (ioaddr + McstOctetXmtOk);
- readw (ioaddr + BcstFramesXmtdOk);
- readl (ioaddr + McstFramesXmtdOk);
- readw (ioaddr + BcstFramesRcvdOk);
- readw (ioaddr + MacControlFramesRcvd);
- readw (ioaddr + FrameTooLongErrors);
- readw (ioaddr + InRangeLengthErrors);
- readw (ioaddr + FramesCheckSeqErrors);
- readw (ioaddr + FramesLostRxErrors);
- readl (ioaddr + McstOctetXmtOk);
- readl (ioaddr + BcstOctetXmtOk);
- readl (ioaddr + McstFramesXmtdOk);
- readl (ioaddr + FramesWDeferredXmt);
- readl (ioaddr + LateCollisions);
- readw (ioaddr + BcstFramesXmtdOk);
- readw (ioaddr + MacControlFramesXmtd);
- readw (ioaddr + FramesWEXDeferal);
- for (i = 0x100; i <= 0x150; i += 4)
- readl (ioaddr + i);
- readw (ioaddr + TxJumboFrames);
- readw (ioaddr + RxJumboFrames);
- readw (ioaddr + TCPCheckSumErrors);
- readw (ioaddr + UDPCheckSumErrors);
- readw (ioaddr + IPCheckSumErrors);
- return &np->stats;
- }
- static int
- clear_stats (struct net_device *dev)
- {
- long ioaddr = dev->base_addr;
- int i;
- /* All statistics registers need to be acknowledged,
- else statistic overflow could cause problems */
- readl (ioaddr + FramesRcvOk);
- readl (ioaddr + FramesXmtOk);
- readl (ioaddr + OctetRcvOk);
- readl (ioaddr + OctetXmtOk);
- readl (ioaddr + McstFramesRcvdOk);
- readl (ioaddr + SingleColFrames);
- readl (ioaddr + MultiColFrames);
- readl (ioaddr + LateCollisions);
- /* detailed rx errors */
- readw (ioaddr + FrameTooLongErrors);
- readw (ioaddr + InRangeLengthErrors);
- readw (ioaddr + FramesCheckSeqErrors);
- readw (ioaddr + FramesLostRxErrors);
- /* detailed tx errors */
- readw (ioaddr + FramesAbortXSColls);
- readw (ioaddr + CarrierSenseErrors);
- /* Clear all other statistic register. */
- readl (ioaddr + McstOctetXmtOk);
- readw (ioaddr + BcstFramesXmtdOk);
- readl (ioaddr + McstFramesXmtdOk);
- readw (ioaddr + BcstFramesRcvdOk);
- readw (ioaddr + MacControlFramesRcvd);
- readl (ioaddr + McstOctetXmtOk);
- readl (ioaddr + BcstOctetXmtOk);
- readl (ioaddr + McstFramesXmtdOk);
- readl (ioaddr + FramesWDeferredXmt);
- readw (ioaddr + BcstFramesXmtdOk);
- readw (ioaddr + MacControlFramesXmtd);
- readw (ioaddr + FramesWEXDeferal);
- for (i = 0x100; i <= 0x150; i += 4)
- readl (ioaddr + i);
- readw (ioaddr + TxJumboFrames);
- readw (ioaddr + RxJumboFrames);
- readw (ioaddr + TCPCheckSumErrors);
- readw (ioaddr + UDPCheckSumErrors);
- readw (ioaddr + IPCheckSumErrors);
- return 0;
- }
- int
- change_mtu (struct net_device *dev, int new_mtu)
- {
- struct netdev_private *np = dev->priv;
- int max = (np->jumbo) ? MAX_JUMBO : 1536;
- if ((new_mtu < 68) || (new_mtu > max)) {
- return -EINVAL;
- }
- dev->mtu = new_mtu;
- return 0;
- }
- static void
- set_multicast (struct net_device *dev)
- {
- long ioaddr = dev->base_addr;
- u32 hash_table[2];
- u16 rx_mode = 0;
- int i;
- int bit;
- struct dev_mc_list *mclist;
- struct netdev_private *np = dev->priv;
-
- hash_table[0] = hash_table[1] = 0;
- /* RxFlowcontrol DA: 01-80-C2-00-00-01. Hash index=0x39 */
- hash_table[1] |= cpu_to_le32(0x02000000);
- if (dev->flags & IFF_PROMISC) {
- /* Receive all frames promiscuously. */
- rx_mode = ReceiveAllFrames;
- } else if ((dev->flags & IFF_ALLMULTI) ||
- (dev->mc_count > multicast_filter_limit)) {
- /* Receive broadcast and multicast frames */
- rx_mode = ReceiveBroadcast | ReceiveMulticast | ReceiveUnicast;
- } else if (dev->mc_count > 0) {
- /* Receive broadcast frames and multicast frames filtering
- by Hashtable */
- rx_mode =
- ReceiveBroadcast | ReceiveMulticastHash | ReceiveUnicast;
- for (i=0, mclist = dev->mc_list; mclist && i < dev->mc_count;
- i++, mclist=mclist->next) {
- int index = 0;
- int crc = ether_crc_le (ETH_ALEN, mclist->dmi_addr);
- /* The inverted high significant 6 bits of CRC are
- used as an index to hashtable */
- for (bit = 0; bit < 6; bit++)
- if (crc & (1 << (31 - bit)))
- index |= (1 << bit);
- hash_table[index / 32] |= (1 << (index % 32));
- }
- } else {
- rx_mode = ReceiveBroadcast | ReceiveUnicast;
- }
- if (np->vlan) {
- /* ReceiveVLANMatch field in ReceiveMode */
- rx_mode |= ReceiveVLANMatch;
- }
- writel (hash_table[0], ioaddr + HashTable0);
- writel (hash_table[1], ioaddr + HashTable1);
- writew (rx_mode, ioaddr + ReceiveMode);
- }
- static int
- rio_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
- {
- int phy_addr;
- struct netdev_private *np = dev->priv;
- struct mii_data *miidata = (struct mii_data *) &rq->ifr_data;
-
- struct netdev_desc *desc;
- int i;
- phy_addr = np->phy_addr;
- switch (cmd) {
- case SIOCDEVPRIVATE:
- break;
-
- case SIOCDEVPRIVATE + 1:
- miidata->out_value = mii_read (dev, phy_addr, miidata->reg_num);
- break;
- case SIOCDEVPRIVATE + 2:
- mii_write (dev, phy_addr, miidata->reg_num, miidata->in_value);
- break;
- case SIOCDEVPRIVATE + 3:
- break;
- case SIOCDEVPRIVATE + 4:
- break;
- case SIOCDEVPRIVATE + 5:
- netif_stop_queue (dev);
- break;
- case SIOCDEVPRIVATE + 6:
- netif_wake_queue (dev);
- break;
- case SIOCDEVPRIVATE + 7:
- printk
- ("tx_full=%x cur_tx=%lx old_tx=%lx cur_rx=%lx old_rx=%lxn",
- netif_queue_stopped(dev), np->cur_tx, np->old_tx, np->cur_rx,
- np->old_rx);
- break;
- case SIOCDEVPRIVATE + 8:
- printk("TX ring:n");
- for (i = 0; i < TX_RING_SIZE; i++) {
- desc = &np->tx_ring[i];
- printk
- ("%02x:cur:%08x next:%08x status:%08x frag1:%08x frag0:%08x",
- i,
- (u32) (np->tx_ring_dma + i * sizeof (*desc)),
- (u32) desc->next_desc,
- (u32) desc->status, (u32) (desc->fraginfo >> 32),
- (u32) desc->fraginfo);
- printk ("n");
- }
- printk ("n");
- break;
- default:
- return -EOPNOTSUPP;
- }
- return 0;
- }
- #define EEP_READ 0x0200
- #define EEP_BUSY 0x8000
- /* Read the EEPROM word */
- int
- read_eeprom (long ioaddr, int eep_addr)
- {
- int i = 1000;
- writew (EEP_READ | (eep_addr & 0xff), ioaddr + EepromCtrl);
- while (i-- > 0) {
- if (!(readw (ioaddr + EepromCtrl) & EEP_BUSY)) {
- return readw (ioaddr + EepromData);
- }
- }
- return 0;
- }
- enum phy_ctrl_bits {
- MII_READ = 0x00, MII_CLK = 0x01, MII_DATA1 = 0x02, MII_WRITE = 0x04,
- MII_DUPLEX = 0x08,
- };
- #define mii_delay() readb(ioaddr)
- static void
- mii_sendbit (struct net_device *dev, u32 data)
- {
- long ioaddr = dev->base_addr + PhyCtrl;
- data = (data) ? MII_DATA1 : 0;
- data |= MII_WRITE;
- data |= (readb (ioaddr) & 0xf8) | MII_WRITE;
- writeb (data, ioaddr);
- mii_delay ();
- writeb (data | MII_CLK, ioaddr);
- mii_delay ();
- }
- static int
- mii_getbit (struct net_device *dev)
- {
- long ioaddr = dev->base_addr + PhyCtrl;
- u8 data;
- data = (readb (ioaddr) & 0xf8) | MII_READ;
- writeb (data, ioaddr);
- mii_delay ();
- writeb (data | MII_CLK, ioaddr);
- mii_delay ();
- return ((readb (ioaddr) >> 1) & 1);
- }
- static void
- mii_send_bits (struct net_device *dev, u32 data, int len)
- {
- int i;
- for (i = len - 1; i >= 0; i--) {
- mii_sendbit (dev, data & (1 << i));
- }
- }
- static int
- mii_read (struct net_device *dev, int phy_addr, int reg_num)
- {
- u32 cmd;
- int i;
- u32 retval = 0;
- /* Preamble */
- mii_send_bits (dev, 0xffffffff, 32);
- /* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
- /* ST,OP = 0110'b for read operation */
- cmd = (0x06 << 10 | phy_addr << 5 | reg_num);
- mii_send_bits (dev, cmd, 14);
- /* Turnaround */
- if (mii_getbit (dev))
- goto err_out;
- /* Read data */
- for (i = 0; i < 16; i++) {
- retval |= mii_getbit (dev);
- retval <<= 1;
- }
- /* End cycle */
- mii_getbit (dev);
- return (retval >> 1) & 0xffff;
- err_out:
- return 0;
- }
- static int
- mii_write (struct net_device *dev, int phy_addr, int reg_num, u16 data)
- {
- u32 cmd;
- /* Preamble */
- mii_send_bits (dev, 0xffffffff, 32);
- /* ST(2), OP(2), ADDR(5), REG#(5), TA(2), Data(16) total 32 bits */
- /* ST,OP,AAAAA,RRRRR,TA = 0101xxxxxxxxxx10'b = 0x5002 for write */
- cmd = (0x5002 << 16) | (phy_addr << 23) | (reg_num << 18) | data;
- mii_send_bits (dev, cmd, 32);
- /* End cycle */
- mii_getbit (dev);
- return 0;
- }
- static int
- mii_wait_link (struct net_device *dev, int wait)
- {
- BMSR_t bmsr;
- int phy_addr;
- struct netdev_private *np;
- np = dev->priv;
- phy_addr = np->phy_addr;
- do {
- bmsr.image = mii_read (dev, phy_addr, MII_BMSR);
- if (bmsr.bits.link_status)
- return 0;
- mdelay (1);
- } while (--wait > 0);
- return -1;
- }
- static int
- mii_get_media (struct net_device *dev)
- {
- ANAR_t negotiate;
- BMSR_t bmsr;
- BMCR_t bmcr;
- MSCR_t mscr;
- MSSR_t mssr;
- int phy_addr;
- struct netdev_private *np;
- np = dev->priv;
- phy_addr = np->phy_addr;
- bmsr.image = mii_read (dev, phy_addr, MII_BMSR);
- if (np->an_enable) {
- if (!bmsr.bits.an_complete) {
- /* Auto-Negotiation not completed */
- return -1;
- }
- negotiate.image = mii_read (dev, phy_addr, MII_ANAR) &
- mii_read (dev, phy_addr, MII_ANLPAR);
- mscr.image = mii_read (dev, phy_addr, MII_MSCR);
- mssr.image = mii_read (dev, phy_addr, MII_MSSR);
- if (mscr.bits.media_1000BT_FD & mssr.bits.lp_1000BT_FD) {
- np->speed = 1000;
- np->full_duplex = 1;
- printk (KERN_INFO "Auto 1000 Mbps, Full duplexn");
- } else if (mscr.bits.media_1000BT_HD & mssr.bits.lp_1000BT_HD) {
- np->speed = 1000;
- np->full_duplex = 0;
- printk (KERN_INFO "Auto 1000 Mbps, Half duplexn");
- } else if (negotiate.bits.media_100BX_FD) {
- np->speed = 100;
- np->full_duplex = 1;
- printk (KERN_INFO "Auto 100 Mbps, Full duplexn");
- } else if (negotiate.bits.media_100BX_HD) {
- np->speed = 100;
- np->full_duplex = 0;
- printk (KERN_INFO "Auto 100 Mbps, Half duplexn");
- } else if (negotiate.bits.media_10BT_FD) {
- np->speed = 10;
- np->full_duplex = 1;
- printk (KERN_INFO "Auto 10 Mbps, Full duplexn");
- } else if (negotiate.bits.media_10BT_HD) {
- np->speed = 10;
- np->full_duplex = 0;
- printk (KERN_INFO "Auto 10 Mbps, Half duplexn");
- }
- if (negotiate.bits.pause) {
- np->tx_flow &= 1;
- np->rx_flow &= 1;
- } else if (negotiate.bits.asymmetric) {
- np->tx_flow = 0;
- np->rx_flow &= 1;
- }
- /* else tx_flow, rx_flow = user select */
- } else {
- bmcr.image = mii_read (dev, phy_addr, MII_BMCR);
- if (bmcr.bits.speed100 == 1 && bmcr.bits.speed1000 == 0) {
- printk (KERN_INFO "Operating at 100 Mbps, ");
- } else if (bmcr.bits.speed100 == 0 && bmcr.bits.speed1000 == 0) {
- printk (KERN_INFO "Operating at 10 Mbps, ");
- } else if (bmcr.bits.speed100 == 0 && bmcr.bits.speed1000 == 1) {
- printk (KERN_INFO "Operating at 1000 Mbps, ");
- }
- if (bmcr.bits.duplex_mode) {
- printk ("Full duplexn");
- } else {
- printk ("Half duplexn");
- }
- }
- if (np->tx_flow)
- printk(KERN_INFO "Enable Tx Flow Controln");
- else
- printk(KERN_INFO "Disable Tx Flow Controln");
- if (np->rx_flow)
- printk(KERN_INFO "Enable Rx Flow Controln");
- else
- printk(KERN_INFO "Disable Rx Flow Controln");
- return 0;
- }
- static int
- mii_set_media (struct net_device *dev)
- {
- PHY_SCR_t pscr;
- BMCR_t bmcr;
- BMSR_t bmsr;
- ANAR_t anar;
- int phy_addr;
- struct netdev_private *np;
- np = dev->priv;
- phy_addr = np->phy_addr;
- /* Does user set speed? */
- if (np->an_enable) {
- /* Advertise capabilities */
- bmsr.image = mii_read (dev, phy_addr, MII_BMSR);
- anar.image = mii_read (dev, phy_addr, MII_ANAR);
- anar.bits.media_100BX_FD = bmsr.bits.media_100BX_FD;
- anar.bits.media_100BX_HD = bmsr.bits.media_100BX_HD;
- anar.bits.media_100BT4 = bmsr.bits.media_100BT4;
- anar.bits.media_10BT_FD = bmsr.bits.media_10BT_FD;
- anar.bits.media_10BT_HD = bmsr.bits.media_10BT_HD;
- anar.bits.pause = 1;
- anar.bits.asymmetric = 1;
- mii_write (dev, phy_addr, MII_ANAR, anar.image);
- /* Enable Auto crossover */
- pscr.image = mii_read (dev, phy_addr, MII_PHY_SCR);
- pscr.bits.mdi_crossover_mode = 3; /* 11'b */
- mii_write (dev, phy_addr, MII_PHY_SCR, pscr.image);
-
- /* Soft reset PHY */
- mii_write (dev, phy_addr, MII_BMCR, MII_BMCR_RESET);
- bmcr.image = 0;
- bmcr.bits.an_enable = 1;
- bmcr.bits.restart_an = 1;
- bmcr.bits.reset = 1;
- mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
- mdelay(1);
- } else {
- /* Force speed setting */
- /* 1) Disable Auto crossover */
- pscr.image = mii_read (dev, phy_addr, MII_PHY_SCR);
- pscr.bits.mdi_crossover_mode = 0;
- mii_write (dev, phy_addr, MII_PHY_SCR, pscr.image);
- /* 2) PHY Reset */
- bmcr.image = mii_read (dev, phy_addr, MII_BMCR);
- bmcr.bits.reset = 1;
- mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
- /* 3) Power Down */
- bmcr.image = 0x1940; /* must be 0x1940 */
- mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
- mdelay (10); /* wait a certain time */
- /* 4) Advertise nothing */
- mii_write (dev, phy_addr, MII_ANAR, 0);
- /* 5) Set media and Power Up */
- bmcr.image = 0;
- bmcr.bits.power_down = 1;
- if (np->speed == 100) {
- bmcr.bits.speed100 = 1;
- bmcr.bits.speed1000 = 0;
- printk (KERN_INFO "Manual 100 Mbps, ");
- } else if (np->speed == 10) {
- bmcr.bits.speed100 = 0;
- bmcr.bits.speed1000 = 0;
- printk (KERN_INFO "Manual 10 Mbps, ");
- }
- if (np->full_duplex) {
- bmcr.bits.duplex_mode = 1;
- printk ("Full duplexn");
- } else {
- bmcr.bits.duplex_mode = 0;
- printk ("Half duplexn");
- }
- #if 0
- /* Set 1000BaseT Master/Slave setting */
- mscr.image = mii_read (dev, phy_addr, MII_MSCR);
- mscr.bits.cfg_enable = 1;
- mscr.bits.cfg_value = 0;
- #endif
- mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
- mdelay(10);
- }
- return 0;
- }
- static int
- mii_get_media_pcs (struct net_device *dev)
- {
- ANAR_PCS_t negotiate;
- BMSR_t bmsr;
- BMCR_t bmcr;
- int phy_addr;
- struct netdev_private *np;
- np = dev->priv;
- phy_addr = np->phy_addr;
- bmsr.image = mii_read (dev, phy_addr, PCS_BMSR);
- if (np->an_enable) {
- if (!bmsr.bits.an_complete) {
- /* Auto-Negotiation not completed */
- return -1;
- }
- negotiate.image = mii_read (dev, phy_addr, PCS_ANAR) &
- mii_read (dev, phy_addr, PCS_ANLPAR);
- np->speed = 1000;
- if (negotiate.bits.full_duplex) {
- printk (KERN_INFO "Auto 1000 Mbps, Full duplexn");
- np->full_duplex = 1;
- } else {
- printk (KERN_INFO "Auto 1000 Mbps, half duplexn");
- np->full_duplex = 0;
- }
- if (negotiate.bits.pause) {
- np->tx_flow &= 1;
- np->rx_flow &= 1;
- } else if (negotiate.bits.asymmetric) {
- np->tx_flow = 0;
- np->rx_flow &= 1;
- }
- /* else tx_flow, rx_flow = user select */
- } else {
- bmcr.image = mii_read (dev, phy_addr, PCS_BMCR);
- printk (KERN_INFO "Operating at 1000 Mbps, ");
- if (bmcr.bits.duplex_mode) {
- printk ("Full duplexn");
- } else {
- printk ("Half duplexn");
- }
- }
- if (np->tx_flow)
- printk(KERN_INFO "Enable Tx Flow Controln");
- else
- printk(KERN_INFO "Disable Tx Flow Controln");
- if (np->rx_flow)
- printk(KERN_INFO "Enable Rx Flow Controln");
- else
- printk(KERN_INFO "Disable Rx Flow Controln");
- return 0;
- }
- static int
- mii_set_media_pcs (struct net_device *dev)
- {
- BMCR_t bmcr;
- ESR_t esr;
- ANAR_PCS_t anar;
- int phy_addr;
- struct netdev_private *np;
- np = dev->priv;
- phy_addr = np->phy_addr;
- /* Auto-Negotiation? */
- if (np->an_enable) {
- /* Advertise capabilities */
- esr.image = mii_read (dev, phy_addr, PCS_ESR);
- anar.image = mii_read (dev, phy_addr, MII_ANAR);
- anar.bits.half_duplex =
- esr.bits.media_1000BT_HD | esr.bits.media_1000BX_HD;
- anar.bits.full_duplex =
- esr.bits.media_1000BT_FD | esr.bits.media_1000BX_FD;
- anar.bits.pause = 1;
- anar.bits.asymmetric = 1;
- mii_write (dev, phy_addr, MII_ANAR, anar.image);
- /* Soft reset PHY */
- mii_write (dev, phy_addr, MII_BMCR, MII_BMCR_RESET);
- bmcr.image = 0;
- bmcr.bits.an_enable = 1;
- bmcr.bits.restart_an = 1;
- bmcr.bits.reset = 1;
- mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
- mdelay(1);
- } else {
- /* Force speed setting */
- /* PHY Reset */
- bmcr.image = 0;
- bmcr.bits.reset = 1;
- mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
- mdelay(10);
- bmcr.image = 0;
- bmcr.bits.an_enable = 0;
- if (np->full_duplex) {
- bmcr.bits.duplex_mode = 1;
- printk (KERN_INFO "Manual full duplexn");
- } else {
- bmcr.bits.duplex_mode = 0;
- printk (KERN_INFO "Manual half duplexn");
- }
- mii_write (dev, phy_addr, MII_BMCR, bmcr.image);
- mdelay(10);
- /* Advertise nothing */
- mii_write (dev, phy_addr, MII_ANAR, 0);
- }
- return 0;
- }
- static int
- rio_close (struct net_device *dev)
- {
- long ioaddr = dev->base_addr;
- struct netdev_private *np = dev->priv;
- struct sk_buff *skb;
- int i;
- netif_stop_queue (dev);
- /* Disable interrupts */
- writew (0, ioaddr + IntEnable);
- /* Stop Tx and Rx logics */
- writel (TxDisable | RxDisable | StatsDisable, ioaddr + MACCtrl);
- synchronize_irq ();
- free_irq (dev->irq, dev);
- del_timer_sync (&np->timer);
-
- /* Free all the skbuffs in the queue. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- np->rx_ring[i].status = 0;
- np->rx_ring[i].fraginfo = 0;
- skb = np->rx_skbuff[i];
- if (skb) {
- pci_unmap_single (np->pdev, np->rx_ring[i].fraginfo,
- skb->len, PCI_DMA_FROMDEVICE);
- dev_kfree_skb (skb);
- np->rx_skbuff[i] = 0;
- }
- }
- for (i = 0; i < TX_RING_SIZE; i++) {
- skb = np->tx_skbuff[i];
- if (skb) {
- pci_unmap_single (np->pdev, np->tx_ring[i].fraginfo,
- skb->len, PCI_DMA_TODEVICE);
- dev_kfree_skb (skb);
- np->tx_skbuff[i] = 0;
- }
- }
- return 0;
- }
- static void __devexit
- rio_remove1 (struct pci_dev *pdev)
- {
- struct net_device *dev = pci_get_drvdata (pdev);
- if (dev) {
- struct netdev_private *np = dev->priv;
- unregister_netdev (dev);
- pci_free_consistent (pdev, RX_TOTAL_SIZE, np->rx_ring,
- np->rx_ring_dma);
- pci_free_consistent (pdev, TX_TOTAL_SIZE, np->tx_ring,
- np->tx_ring_dma);
- #ifdef MEM_MAPPING
- iounmap ((char *) (dev->base_addr));
- #endif
- kfree (dev);
- pci_release_regions (pdev);
- pci_disable_device (pdev);
- }
- pci_set_drvdata (pdev, NULL);
- }
- static struct pci_driver rio_driver = {
- name: "dl2k",
- id_table: rio_pci_tbl,
- probe: rio_probe1,
- remove: __devexit_p(rio_remove1),
- };
- static int __init
- rio_init (void)
- {
- return pci_module_init (&rio_driver);
- }
- static void __exit
- rio_exit (void)
- {
- pci_unregister_driver (&rio_driver);
- }
- module_init (rio_init);
- module_exit (rio_exit);
- /*
-
- Compile command:
-
- gcc -D__KERNEL__ -DMODULE -I/usr/src/linux/include -Wall -Wstrict-prototypes -O2 -c dl2k.c
- Read Documentation/networking/dl2k.txt for details.
- */