8139cp.c
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- /* 8139cp.c: A Linux PCI Ethernet driver for the RealTek 8139C+ chips. */
- /*
- Copyright 2001 Jeff Garzik <jgarzik@mandrakesoft.com>
- Copyright (C) 2000, 2001 David S. Miller (davem@redhat.com) [sungem.c]
- Copyright 2001 Manfred Spraul [natsemi.c]
- Copyright 1999-2001 by Donald Becker. [natsemi.c]
- Written 1997-2001 by Donald Becker. [8139too.c]
- Copyright 1998-2001 by Jes Sorensen, <jes@trained-monkey.org>. [acenic.c]
- This software may be used and distributed according to the terms of
- the GNU General Public License (GPL), incorporated herein by reference.
- Drivers based on or derived from this code fall under the GPL and must
- retain the authorship, copyright and license notice. This file is not
- a complete program and may only be used when the entire operating
- system is licensed under the GPL.
- See the file COPYING in this distribution for more information.
- TODO, in rough priority order:
- * dev->tx_timeout
- * LinkChg interrupt
- * Support forcing media type with a module parameter,
- like dl2k.c/sundance.c
- * Implement PCI suspend/resume
- * Constants (module parms?) for Rx work limit
- * support 64-bit PCI DMA
- * Complete reset on PciErr
- * Consider Rx interrupt mitigation using TimerIntr
- * Implement 8139C+ statistics dump; maybe not...
- h/w stats can be reset only by software reset
- * Rx checksumming
- * Tx checksumming
- * ETHTOOL_GREGS, ETHTOOL_[GS]WOL,
- * Jumbo frames / dev->change_mtu
- * Investigate using skb->priority with h/w VLAN priority
- * Investigate using High Priority Tx Queue with skb->priority
- * Adjust Rx FIFO threshold and Max Rx DMA burst on Rx FIFO error
- * Adjust Tx FIFO threshold and Max Tx DMA burst on Tx FIFO error
- * Implement Tx software interrupt mitigation via
- Tx descriptor bit
- */
- #define DRV_NAME "8139cp"
- #define DRV_VERSION "0.0.6"
- #define DRV_RELDATE "Nov 19, 2001"
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/init.h>
- #include <linux/pci.h>
- #include <linux/delay.h>
- #include <linux/ethtool.h>
- #include <linux/mii.h>
- #include <asm/io.h>
- #include <asm/uaccess.h>
- /* These identify the driver base version and may not be removed. */
- static char version[] __devinitdata =
- KERN_INFO DRV_NAME " 10/100 PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE ")n";
- MODULE_AUTHOR("Jeff Garzik <jgarzik@mandrakesoft.com>");
- MODULE_DESCRIPTION("RealTek RTL-8139C+ series 10/100 PCI Ethernet driver");
- MODULE_LICENSE("GPL");
- static int debug = -1;
- MODULE_PARM (debug, "i");
- MODULE_PARM_DESC (debug, "8139cp bitmapped message enable number");
- /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
- The RTL chips use a 64 element hash table based on the Ethernet CRC. */
- static int multicast_filter_limit = 32;
- MODULE_PARM (multicast_filter_limit, "i");
- MODULE_PARM_DESC (multicast_filter_limit, "8139cp maximum number of filtered multicast addresses");
- #define PFX DRV_NAME ": "
- #define CP_DEF_MSG_ENABLE (NETIF_MSG_DRV |
- NETIF_MSG_PROBE |
- NETIF_MSG_LINK)
- #define CP_REGS_SIZE (0xff + 1)
- #define CP_RX_RING_SIZE 64
- #define CP_TX_RING_SIZE 64
- #define CP_RING_BYTES
- ((sizeof(struct cp_desc) * CP_RX_RING_SIZE) +
- (sizeof(struct cp_desc) * CP_TX_RING_SIZE))
- #define NEXT_TX(N) (((N) + 1) & (CP_TX_RING_SIZE - 1))
- #define NEXT_RX(N) (((N) + 1) & (CP_RX_RING_SIZE - 1))
- #define TX_BUFFS_AVAIL(CP)
- (((CP)->tx_tail <= (CP)->tx_head) ?
- (CP)->tx_tail + (CP_TX_RING_SIZE - 1) - (CP)->tx_head :
- (CP)->tx_tail - (CP)->tx_head - 1)
- #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer.*/
- #define RX_OFFSET 2
- #define CP_INTERNAL_PHY 32
- /* The following settings are log_2(bytes)-4: 0 == 16 bytes .. 6==1024, 7==end of packet. */
- #define RX_FIFO_THRESH 5 /* Rx buffer level before first PCI xfer. */
- #define RX_DMA_BURST 4 /* Maximum PCI burst, '4' is 256 */
- #define TX_DMA_BURST 6 /* Maximum PCI burst, '6' is 1024 */
- #define TX_EARLY_THRESH 256 /* Early Tx threshold, in bytes */
- /* Time in jiffies before concluding the transmitter is hung. */
- #define TX_TIMEOUT (6*HZ)
- enum {
- /* NIC register offsets */
- MAC0 = 0x00, /* Ethernet hardware address. */
- MAR0 = 0x08, /* Multicast filter. */
- TxRingAddr = 0x20, /* 64-bit start addr of Tx ring */
- HiTxRingAddr = 0x28, /* 64-bit start addr of high priority Tx ring */
- Cmd = 0x37, /* Command register */
- IntrMask = 0x3C, /* Interrupt mask */
- IntrStatus = 0x3E, /* Interrupt status */
- TxConfig = 0x40, /* Tx configuration */
- ChipVersion = 0x43, /* 8-bit chip version, inside TxConfig */
- RxConfig = 0x44, /* Rx configuration */
- Cfg9346 = 0x50, /* EEPROM select/control; Cfg reg [un]lock */
- Config1 = 0x52, /* Config1 */
- Config3 = 0x59, /* Config3 */
- Config4 = 0x5A, /* Config4 */
- MultiIntr = 0x5C, /* Multiple interrupt select */
- BasicModeCtrl = 0x62, /* MII BMCR */
- BasicModeStatus = 0x64, /* MII BMSR */
- NWayAdvert = 0x66, /* MII ADVERTISE */
- NWayLPAR = 0x68, /* MII LPA */
- NWayExpansion = 0x6A, /* MII Expansion */
- Config5 = 0xD8, /* Config5 */
- TxPoll = 0xD9, /* Tell chip to check Tx descriptors for work */
- CpCmd = 0xE0, /* C+ Command register (C+ mode only) */
- RxRingAddr = 0xE4, /* 64-bit start addr of Rx ring */
- TxThresh = 0xEC, /* Early Tx threshold */
- OldRxBufAddr = 0x30, /* DMA address of Rx ring buffer (C mode) */
- OldTSD0 = 0x10, /* DMA address of first Tx desc (C mode) */
- /* Tx and Rx status descriptors */
- DescOwn = (1 << 31), /* Descriptor is owned by NIC */
- RingEnd = (1 << 30), /* End of descriptor ring */
- FirstFrag = (1 << 29), /* First segment of a packet */
- LastFrag = (1 << 28), /* Final segment of a packet */
- TxError = (1 << 23), /* Tx error summary */
- RxError = (1 << 20), /* Rx error summary */
- IPCS = (1 << 18), /* Calculate IP checksum */
- UDPCS = (1 << 17), /* Calculate UDP/IP checksum */
- TCPCS = (1 << 16), /* Calculate TCP/IP checksum */
- IPFail = (1 << 15), /* IP checksum failed */
- UDPFail = (1 << 14), /* UDP/IP checksum failed */
- TCPFail = (1 << 13), /* TCP/IP checksum failed */
- NormalTxPoll = (1 << 6), /* One or more normal Tx packets to send */
- PID1 = (1 << 17), /* 2 protocol id bits: 0==non-IP, */
- PID0 = (1 << 16), /* 1==UDP/IP, 2==TCP/IP, 3==IP */
- TxFIFOUnder = (1 << 25), /* Tx FIFO underrun */
- TxOWC = (1 << 22), /* Tx Out-of-window collision */
- TxLinkFail = (1 << 21), /* Link failed during Tx of packet */
- TxMaxCol = (1 << 20), /* Tx aborted due to excessive collisions */
- TxColCntShift = 16, /* Shift, to get 4-bit Tx collision cnt */
- TxColCntMask = 0x01 | 0x02 | 0x04 | 0x08, /* 4-bit collision count */
- RxErrFrame = (1 << 27), /* Rx frame alignment error */
- RxMcast = (1 << 26), /* Rx multicast packet rcv'd */
- RxErrCRC = (1 << 18), /* Rx CRC error */
- RxErrRunt = (1 << 19), /* Rx error, packet < 64 bytes */
- RxErrLong = (1 << 21), /* Rx error, packet > 4096 bytes */
- RxErrFIFO = (1 << 22), /* Rx error, FIFO overflowed, pkt bad */
- /* RxConfig register */
- RxCfgFIFOShift = 13, /* Shift, to get Rx FIFO thresh value */
- RxCfgDMAShift = 8, /* Shift, to get Rx Max DMA value */
- AcceptErr = 0x20, /* Accept packets with CRC errors */
- AcceptRunt = 0x10, /* Accept runt (<64 bytes) packets */
- AcceptBroadcast = 0x08, /* Accept broadcast packets */
- AcceptMulticast = 0x04, /* Accept multicast packets */
- AcceptMyPhys = 0x02, /* Accept pkts with our MAC as dest */
- AcceptAllPhys = 0x01, /* Accept all pkts w/ physical dest */
- /* IntrMask / IntrStatus registers */
- PciErr = (1 << 15), /* System error on the PCI bus */
- TimerIntr = (1 << 14), /* Asserted when TCTR reaches TimerInt value */
- LenChg = (1 << 13), /* Cable length change */
- SWInt = (1 << 8), /* Software-requested interrupt */
- TxEmpty = (1 << 7), /* No Tx descriptors available */
- RxFIFOOvr = (1 << 6), /* Rx FIFO Overflow */
- LinkChg = (1 << 5), /* Packet underrun, or link change */
- RxEmpty = (1 << 4), /* No Rx descriptors available */
- TxErr = (1 << 3), /* Tx error */
- TxOK = (1 << 2), /* Tx packet sent */
- RxErr = (1 << 1), /* Rx error */
- RxOK = (1 << 0), /* Rx packet received */
- IntrResvd = (1 << 10), /* reserved, according to RealTek engineers,
- but hardware likes to raise it */
- IntrAll = PciErr | TimerIntr | LenChg | SWInt | TxEmpty |
- RxFIFOOvr | LinkChg | RxEmpty | TxErr | TxOK |
- RxErr | RxOK | IntrResvd,
- /* C mode command register */
- CmdReset = (1 << 4), /* Enable to reset; self-clearing */
- RxOn = (1 << 3), /* Rx mode enable */
- TxOn = (1 << 2), /* Tx mode enable */
- /* C+ mode command register */
- RxChkSum = (1 << 5), /* Rx checksum offload enable */
- PCIMulRW = (1 << 3), /* Enable PCI read/write multiple */
- CpRxOn = (1 << 1), /* Rx mode enable */
- CpTxOn = (1 << 0), /* Tx mode enable */
- /* Cfg9436 EEPROM control register */
- Cfg9346_Lock = 0x00, /* Lock ConfigX/MII register access */
- Cfg9346_Unlock = 0xC0, /* Unlock ConfigX/MII register access */
- /* TxConfig register */
- IFG = (1 << 25) | (1 << 24), /* standard IEEE interframe gap */
- TxDMAShift = 8, /* DMA burst value (0-7) is shift this many bits */
- /* Early Tx Threshold register */
- TxThreshMask = 0x3f, /* Mask bits 5-0 */
- TxThreshMax = 2048, /* Max early Tx threshold */
- /* Config1 register */
- DriverLoaded = (1 << 5), /* Software marker, driver is loaded */
- PMEnable = (1 << 0), /* Enable various PM features of chip */
- /* Config3 register */
- PARMEnable = (1 << 6), /* Enable auto-loading of PHY parms */
- /* Config5 register */
- PMEStatus = (1 << 0), /* PME status can be reset by PCI RST# */
- };
- static const unsigned int cp_intr_mask =
- PciErr | LinkChg |
- RxOK | RxErr | RxEmpty | RxFIFOOvr |
- TxOK | TxErr | TxEmpty;
- static const unsigned int cp_rx_config =
- (RX_FIFO_THRESH << RxCfgFIFOShift) |
- (RX_DMA_BURST << RxCfgDMAShift);
- struct cp_desc {
- u32 opts1;
- u32 opts2;
- u32 addr_lo;
- u32 addr_hi;
- };
- struct ring_info {
- struct sk_buff *skb;
- dma_addr_t mapping;
- unsigned frag;
- };
- struct cp_extra_stats {
- unsigned long rx_frags;
- };
- struct cp_private {
- unsigned tx_head;
- unsigned tx_tail;
- unsigned rx_tail;
- void *regs;
- struct net_device *dev;
- spinlock_t lock;
- struct cp_desc *rx_ring;
- struct cp_desc *tx_ring;
- struct ring_info tx_skb[CP_TX_RING_SIZE];
- struct ring_info rx_skb[CP_RX_RING_SIZE];
- unsigned rx_buf_sz;
- dma_addr_t ring_dma;
- u32 msg_enable;
- struct net_device_stats net_stats;
- struct cp_extra_stats cp_stats;
- struct pci_dev *pdev;
- u32 rx_config;
- struct sk_buff *frag_skb;
- unsigned dropping_frag : 1;
- struct mii_if_info mii_if;
- };
- #define cpr8(reg) readb(cp->regs + (reg))
- #define cpr16(reg) readw(cp->regs + (reg))
- #define cpr32(reg) readl(cp->regs + (reg))
- #define cpw8(reg,val) writeb((val), cp->regs + (reg))
- #define cpw16(reg,val) writew((val), cp->regs + (reg))
- #define cpw32(reg,val) writel((val), cp->regs + (reg))
- #define cpw8_f(reg,val) do {
- writeb((val), cp->regs + (reg));
- readb(cp->regs + (reg));
- } while (0)
- #define cpw16_f(reg,val) do {
- writew((val), cp->regs + (reg));
- readw(cp->regs + (reg));
- } while (0)
- #define cpw32_f(reg,val) do {
- writel((val), cp->regs + (reg));
- readl(cp->regs + (reg));
- } while (0)
- static void __cp_set_rx_mode (struct net_device *dev);
- static void cp_tx (struct cp_private *cp);
- static void cp_clean_rings (struct cp_private *cp);
- static struct pci_device_id cp_pci_tbl[] __devinitdata = {
- { PCI_VENDOR_ID_REALTEK, PCI_DEVICE_ID_REALTEK_8139,
- PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
- { },
- };
- MODULE_DEVICE_TABLE(pci, cp_pci_tbl);
- static inline void cp_rx_skb (struct cp_private *cp, struct sk_buff *skb)
- {
- skb->protocol = eth_type_trans (skb, cp->dev);
- cp->net_stats.rx_packets++;
- cp->net_stats.rx_bytes += skb->len;
- cp->dev->last_rx = jiffies;
- netif_rx (skb);
- }
- static void cp_rx_err_acct (struct cp_private *cp, unsigned rx_tail,
- u32 status, u32 len)
- {
- if (netif_msg_rx_err (cp))
- printk (KERN_DEBUG
- "%s: rx err, slot %d status 0x%x len %dn",
- cp->dev->name, rx_tail, status, len);
- cp->net_stats.rx_errors++;
- if (status & RxErrFrame)
- cp->net_stats.rx_frame_errors++;
- if (status & RxErrCRC)
- cp->net_stats.rx_crc_errors++;
- if (status & RxErrRunt)
- cp->net_stats.rx_length_errors++;
- if (status & RxErrLong)
- cp->net_stats.rx_length_errors++;
- if (status & RxErrFIFO)
- cp->net_stats.rx_fifo_errors++;
- }
- static void cp_rx_frag (struct cp_private *cp, unsigned rx_tail,
- struct sk_buff *skb, u32 status, u32 len)
- {
- struct sk_buff *copy_skb, *frag_skb = cp->frag_skb;
- unsigned orig_len = frag_skb ? frag_skb->len : 0;
- unsigned target_len = orig_len + len;
- unsigned first_frag = status & FirstFrag;
- unsigned last_frag = status & LastFrag;
- if (netif_msg_rx_status (cp))
- printk (KERN_DEBUG "%s: rx %s%sfrag, slot %d status 0x%x len %dn",
- cp->dev->name,
- cp->dropping_frag ? "dropping " : "",
- first_frag ? "first " :
- last_frag ? "last " : "",
- rx_tail, status, len);
- cp->cp_stats.rx_frags++;
- if (!frag_skb && !first_frag)
- cp->dropping_frag = 1;
- if (cp->dropping_frag)
- goto drop_frag;
- copy_skb = dev_alloc_skb (target_len + RX_OFFSET);
- if (!copy_skb) {
- printk(KERN_WARNING "%s: rx slot %d alloc failedn",
- cp->dev->name, rx_tail);
- cp->dropping_frag = 1;
- drop_frag:
- if (frag_skb) {
- dev_kfree_skb_irq(frag_skb);
- cp->frag_skb = NULL;
- }
- if (last_frag) {
- cp->net_stats.rx_dropped++;
- cp->dropping_frag = 0;
- }
- return;
- }
- copy_skb->dev = cp->dev;
- skb_reserve(copy_skb, RX_OFFSET);
- skb_put(copy_skb, target_len);
- if (frag_skb) {
- memcpy(copy_skb->data, frag_skb->data, orig_len);
- dev_kfree_skb_irq(frag_skb);
- }
- pci_dma_sync_single(cp->pdev, cp->rx_skb[rx_tail].mapping,
- len, PCI_DMA_FROMDEVICE);
- memcpy(copy_skb->data + orig_len, skb->data, len);
- copy_skb->ip_summed = CHECKSUM_NONE;
- if (last_frag) {
- if (status & (RxError | RxErrFIFO)) {
- cp_rx_err_acct(cp, rx_tail, status, len);
- dev_kfree_skb_irq(copy_skb);
- } else
- cp_rx_skb(cp, copy_skb);
- cp->frag_skb = NULL;
- } else {
- cp->frag_skb = copy_skb;
- }
- }
- static void cp_rx (struct cp_private *cp)
- {
- unsigned rx_tail = cp->rx_tail;
- unsigned rx_work = 100;
- while (rx_work--) {
- u32 status, len;
- dma_addr_t mapping;
- struct sk_buff *skb, *new_skb;
- unsigned buflen;
- skb = cp->rx_skb[rx_tail].skb;
- if (!skb)
- BUG();
- rmb();
- status = le32_to_cpu(cp->rx_ring[rx_tail].opts1);
- if (status & DescOwn)
- break;
- len = (status & 0x1fff) - 4;
- mapping = cp->rx_skb[rx_tail].mapping;
- if ((status & (FirstFrag | LastFrag)) != (FirstFrag | LastFrag)) {
- cp_rx_frag(cp, rx_tail, skb, status, len);
- goto rx_next;
- }
- if (status & (RxError | RxErrFIFO)) {
- cp_rx_err_acct(cp, rx_tail, status, len);
- goto rx_next;
- }
- if (netif_msg_rx_status(cp))
- printk(KERN_DEBUG "%s: rx slot %d status 0x%x len %dn",
- cp->dev->name, rx_tail, status, len);
- buflen = cp->rx_buf_sz + RX_OFFSET;
- new_skb = dev_alloc_skb (buflen);
- if (!new_skb) {
- cp->net_stats.rx_dropped++;
- goto rx_next;
- }
- skb_reserve(new_skb, RX_OFFSET);
- new_skb->dev = cp->dev;
- pci_unmap_single(cp->pdev, mapping,
- buflen, PCI_DMA_FROMDEVICE);
- skb->ip_summed = CHECKSUM_NONE;
- skb_put(skb, len);
- mapping =
- cp->rx_skb[rx_tail].mapping =
- pci_map_single(cp->pdev, new_skb->tail,
- buflen, PCI_DMA_FROMDEVICE);
- cp->rx_skb[rx_tail].skb = new_skb;
- cp_rx_skb(cp, skb);
- rx_next:
- if (rx_tail == (CP_RX_RING_SIZE - 1))
- cp->rx_ring[rx_tail].opts1 =
- cpu_to_le32(DescOwn | RingEnd | cp->rx_buf_sz);
- else
- cp->rx_ring[rx_tail].opts1 =
- cpu_to_le32(DescOwn | cp->rx_buf_sz);
- cp->rx_ring[rx_tail].opts2 = 0;
- cp->rx_ring[rx_tail].addr_lo = cpu_to_le32(mapping);
- rx_tail = NEXT_RX(rx_tail);
- }
- if (!rx_work)
- printk(KERN_WARNING "%s: rx work limit reachedn", cp->dev->name);
- cp->rx_tail = rx_tail;
- }
- static void cp_interrupt (int irq, void *dev_instance, struct pt_regs *regs)
- {
- struct net_device *dev = dev_instance;
- struct cp_private *cp = dev->priv;
- u16 status;
- status = cpr16(IntrStatus);
- if (!status || (status == 0xFFFF))
- return;
- if (netif_msg_intr(cp))
- printk(KERN_DEBUG "%s: intr, status %04x cmd %02x cpcmd %04xn",
- dev->name, status, cpr8(Cmd), cpr16(CpCmd));
- spin_lock(&cp->lock);
- if (status & (RxOK | RxErr | RxEmpty | RxFIFOOvr))
- cp_rx(cp);
- if (status & (TxOK | TxErr | TxEmpty | SWInt))
- cp_tx(cp);
- cpw16_f(IntrStatus, status);
- if (status & PciErr) {
- u16 pci_status;
- pci_read_config_word(cp->pdev, PCI_STATUS, &pci_status);
- pci_write_config_word(cp->pdev, PCI_STATUS, pci_status);
- printk(KERN_ERR "%s: PCI bus error, status=%04x, PCI status=%04xn",
- dev->name, status, pci_status);
- }
- spin_unlock(&cp->lock);
- }
- static void cp_tx (struct cp_private *cp)
- {
- unsigned tx_head = cp->tx_head;
- unsigned tx_tail = cp->tx_tail;
- while (tx_tail != tx_head) {
- struct sk_buff *skb;
- u32 status;
- rmb();
- status = le32_to_cpu(cp->tx_ring[tx_tail].opts1);
- if (status & DescOwn)
- break;
- skb = cp->tx_skb[tx_tail].skb;
- if (!skb)
- BUG();
- pci_unmap_single(cp->pdev, cp->tx_skb[tx_tail].mapping,
- skb->len, PCI_DMA_TODEVICE);
- if (status & LastFrag) {
- if (status & (TxError | TxFIFOUnder)) {
- if (netif_msg_tx_err(cp))
- printk(KERN_DEBUG "%s: tx err, status 0x%xn",
- cp->dev->name, status);
- cp->net_stats.tx_errors++;
- if (status & TxOWC)
- cp->net_stats.tx_window_errors++;
- if (status & TxMaxCol)
- cp->net_stats.tx_aborted_errors++;
- if (status & TxLinkFail)
- cp->net_stats.tx_carrier_errors++;
- if (status & TxFIFOUnder)
- cp->net_stats.tx_fifo_errors++;
- } else {
- cp->net_stats.collisions +=
- ((status >> TxColCntShift) & TxColCntMask);
- cp->net_stats.tx_packets++;
- cp->net_stats.tx_bytes += skb->len;
- if (netif_msg_tx_done(cp))
- printk(KERN_DEBUG "%s: tx done, slot %dn", cp->dev->name, tx_tail);
- }
- dev_kfree_skb_irq(skb);
- }
- cp->tx_skb[tx_tail].skb = NULL;
- tx_tail = NEXT_TX(tx_tail);
- }
- cp->tx_tail = tx_tail;
- if (netif_queue_stopped(cp->dev) && (TX_BUFFS_AVAIL(cp) > 1))
- netif_wake_queue(cp->dev);
- }
- static int cp_start_xmit (struct sk_buff *skb, struct net_device *dev)
- {
- struct cp_private *cp = dev->priv;
- unsigned entry;
- u32 eor;
- spin_lock_irq(&cp->lock);
- if (TX_BUFFS_AVAIL(cp) <= (skb_shinfo(skb)->nr_frags + 1)) {
- netif_stop_queue(dev);
- spin_unlock_irq(&cp->lock);
- return 1;
- }
- entry = cp->tx_head;
- eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
- if (skb_shinfo(skb)->nr_frags == 0) {
- struct cp_desc *txd = &cp->tx_ring[entry];
- u32 mapping, len;
- len = skb->len;
- mapping = pci_map_single(cp->pdev, skb->data, len, PCI_DMA_TODEVICE);
- eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
- txd->opts2 = 0;
- txd->addr_lo = cpu_to_le32(mapping);
- wmb();
- #ifdef CP_TX_CHECKSUM
- txd->opts1 = cpu_to_le32(eor | len | DescOwn | FirstFrag |
- LastFrag | IPCS | UDPCS | TCPCS);
- #else
- txd->opts1 = cpu_to_le32(eor | len | DescOwn | FirstFrag |
- LastFrag);
- #endif
- wmb();
- cp->tx_skb[entry].skb = skb;
- cp->tx_skb[entry].mapping = mapping;
- cp->tx_skb[entry].frag = 0;
- entry = NEXT_TX(entry);
- } else {
- struct cp_desc *txd;
- u32 first_len, first_mapping;
- int frag, first_entry = entry;
- /* We must give this initial chunk to the device last.
- * Otherwise we could race with the device.
- */
- first_len = skb->len - skb->data_len;
- first_mapping = pci_map_single(cp->pdev, skb->data,
- first_len, PCI_DMA_TODEVICE);
- cp->tx_skb[entry].skb = skb;
- cp->tx_skb[entry].mapping = first_mapping;
- cp->tx_skb[entry].frag = 1;
- entry = NEXT_TX(entry);
- for (frag = 0; frag < skb_shinfo(skb)->nr_frags; frag++) {
- skb_frag_t *this_frag = &skb_shinfo(skb)->frags[frag];
- u32 len, mapping;
- u32 ctrl;
- len = this_frag->size;
- mapping = pci_map_single(cp->pdev,
- ((void *) page_address(this_frag->page) +
- this_frag->page_offset),
- len, PCI_DMA_TODEVICE);
- eor = (entry == (CP_TX_RING_SIZE - 1)) ? RingEnd : 0;
- #ifdef CP_TX_CHECKSUM
- ctrl = eor | len | DescOwn | IPCS | UDPCS | TCPCS;
- #else
- ctrl = eor | len | DescOwn;
- #endif
- if (frag == skb_shinfo(skb)->nr_frags - 1)
- ctrl |= LastFrag;
- txd = &cp->tx_ring[entry];
- txd->opts2 = 0;
- txd->addr_lo = cpu_to_le32(mapping);
- wmb();
- txd->opts1 = cpu_to_le32(ctrl);
- wmb();
- cp->tx_skb[entry].skb = skb;
- cp->tx_skb[entry].mapping = mapping;
- cp->tx_skb[entry].frag = frag + 2;
- entry = NEXT_TX(entry);
- }
- txd = &cp->tx_ring[first_entry];
- txd->opts2 = 0;
- txd->addr_lo = cpu_to_le32(first_mapping);
- wmb();
- #ifdef CP_TX_CHECKSUM
- txd->opts1 = cpu_to_le32(first_len | FirstFrag | DescOwn | IPCS | UDPCS | TCPCS);
- #else
- txd->opts1 = cpu_to_le32(first_len | FirstFrag | DescOwn);
- #endif
- wmb();
- }
- cp->tx_head = entry;
- if (netif_msg_tx_queued(cp))
- printk(KERN_DEBUG "%s: tx queued, slot %d, skblen %dn",
- dev->name, entry, skb->len);
- if (TX_BUFFS_AVAIL(cp) < 0)
- BUG();
- if (TX_BUFFS_AVAIL(cp) == 0)
- netif_stop_queue(dev);
- spin_unlock_irq(&cp->lock);
- cpw8(TxPoll, NormalTxPoll);
- dev->trans_start = jiffies;
- return 0;
- }
- /* Set or clear the multicast filter for this adaptor.
- This routine is not state sensitive and need not be SMP locked. */
- static unsigned const ethernet_polynomial = 0x04c11db7U;
- static inline u32 ether_crc (int length, unsigned char *data)
- {
- int crc = -1;
- while (--length >= 0) {
- unsigned char current_octet = *data++;
- int bit;
- for (bit = 0; bit < 8; bit++, current_octet >>= 1)
- crc = (crc << 1) ^ ((crc < 0) ^ (current_octet & 1) ?
- ethernet_polynomial : 0);
- }
- return crc;
- }
- static void __cp_set_rx_mode (struct net_device *dev)
- {
- struct cp_private *cp = dev->priv;
- u32 mc_filter[2]; /* Multicast hash filter */
- int i, rx_mode;
- u32 tmp;
- /* Note: do not reorder, GCC is clever about common statements. */
- if (dev->flags & IFF_PROMISC) {
- /* Unconditionally log net taps. */
- printk (KERN_NOTICE "%s: Promiscuous mode enabled.n",
- dev->name);
- rx_mode =
- AcceptBroadcast | AcceptMulticast | AcceptMyPhys |
- AcceptAllPhys;
- mc_filter[1] = mc_filter[0] = 0xffffffff;
- } else if ((dev->mc_count > multicast_filter_limit)
- || (dev->flags & IFF_ALLMULTI)) {
- /* Too many to filter perfectly -- accept all multicasts. */
- rx_mode = AcceptBroadcast | AcceptMulticast | AcceptMyPhys;
- mc_filter[1] = mc_filter[0] = 0xffffffff;
- } else {
- struct dev_mc_list *mclist;
- rx_mode = AcceptBroadcast | AcceptMyPhys;
- mc_filter[1] = mc_filter[0] = 0;
- for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
- i++, mclist = mclist->next) {
- int bit_nr = ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26;
- mc_filter[bit_nr >> 5] |= cpu_to_le32(1 << (bit_nr & 31));
- rx_mode |= AcceptMulticast;
- }
- }
- /* We can safely update without stopping the chip. */
- tmp = cp_rx_config | rx_mode;
- if (cp->rx_config != tmp) {
- cpw32_f (RxConfig, tmp);
- cp->rx_config = tmp;
- }
- cpw32_f (MAR0 + 0, mc_filter[0]);
- cpw32_f (MAR0 + 4, mc_filter[1]);
- }
- static void cp_set_rx_mode (struct net_device *dev)
- {
- unsigned long flags;
- struct cp_private *cp = dev->priv;
- spin_lock_irqsave (&cp->lock, flags);
- __cp_set_rx_mode(dev);
- spin_unlock_irqrestore (&cp->lock, flags);
- }
- static void __cp_get_stats(struct cp_private *cp)
- {
- /* XXX implement */
- }
- static struct net_device_stats *cp_get_stats(struct net_device *dev)
- {
- struct cp_private *cp = dev->priv;
- /* The chip only need report frame silently dropped. */
- spin_lock_irq(&cp->lock);
- if (netif_running(dev) && netif_device_present(dev))
- __cp_get_stats(cp);
- spin_unlock_irq(&cp->lock);
- return &cp->net_stats;
- }
- static void cp_stop_hw (struct cp_private *cp)
- {
- cpw16(IntrMask, 0);
- cpr16(IntrMask);
- cpw8(Cmd, 0);
- cpw16(CpCmd, 0);
- cpr16(CpCmd);
- cpw16(IntrStatus, ~(cpr16(IntrStatus)));
- synchronize_irq();
- udelay(10);
- cp->rx_tail = 0;
- cp->tx_head = cp->tx_tail = 0;
- }
- static void cp_reset_hw (struct cp_private *cp)
- {
- unsigned work = 1000;
- cpw8(Cmd, CmdReset);
- while (work--) {
- if (!(cpr8(Cmd) & CmdReset))
- return;
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(10);
- }
- printk(KERN_ERR "%s: hardware reset timeoutn", cp->dev->name);
- }
- static void cp_init_hw (struct cp_private *cp)
- {
- struct net_device *dev = cp->dev;
- cp_reset_hw(cp);
- cpw8_f (Cfg9346, Cfg9346_Unlock);
- /* Restore our idea of the MAC address. */
- cpw32_f (MAC0 + 0, cpu_to_le32 (*(u32 *) (dev->dev_addr + 0)));
- cpw32_f (MAC0 + 4, cpu_to_le32 (*(u32 *) (dev->dev_addr + 4)));
- cpw8(Cmd, RxOn | TxOn);
- cpw16(CpCmd, PCIMulRW | CpRxOn | CpTxOn);
- cpw8(TxThresh, 0x06); /* XXX convert magic num to a constant */
- __cp_set_rx_mode(dev);
- cpw32_f (TxConfig, IFG | (TX_DMA_BURST << TxDMAShift));
- cpw8(Config1, cpr8(Config1) | DriverLoaded | PMEnable);
- cpw8(Config3, PARMEnable); /* disables magic packet and WOL */
- cpw8(Config5, cpr8(Config5) & PMEStatus); /* disables more WOL stuff */
- cpw32_f(HiTxRingAddr, 0);
- cpw32_f(HiTxRingAddr + 4, 0);
- cpw32_f(OldRxBufAddr, 0);
- cpw32_f(OldTSD0, 0);
- cpw32_f(OldTSD0 + 4, 0);
- cpw32_f(OldTSD0 + 8, 0);
- cpw32_f(OldTSD0 + 12, 0);
- cpw32_f(RxRingAddr, cp->ring_dma);
- cpw32_f(RxRingAddr + 4, 0);
- cpw32_f(TxRingAddr, cp->ring_dma + (sizeof(struct cp_desc) * CP_RX_RING_SIZE));
- cpw32_f(TxRingAddr + 4, 0);
- cpw16(MultiIntr, 0);
- cpw16(IntrMask, cp_intr_mask);
- cpw8_f (Cfg9346, Cfg9346_Lock);
- }
- static int cp_refill_rx (struct cp_private *cp)
- {
- unsigned i;
- for (i = 0; i < CP_RX_RING_SIZE; i++) {
- struct sk_buff *skb;
- skb = dev_alloc_skb(cp->rx_buf_sz + RX_OFFSET);
- if (!skb)
- goto err_out;
- skb->dev = cp->dev;
- skb_reserve(skb, RX_OFFSET);
- cp->rx_skb[i].mapping = pci_map_single(cp->pdev,
- skb->tail, cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
- cp->rx_skb[i].skb = skb;
- cp->rx_skb[i].frag = 0;
- if (i == (CP_RX_RING_SIZE - 1))
- cp->rx_ring[i].opts1 =
- cpu_to_le32(DescOwn | RingEnd | cp->rx_buf_sz);
- else
- cp->rx_ring[i].opts1 =
- cpu_to_le32(DescOwn | cp->rx_buf_sz);
- cp->rx_ring[i].opts2 = 0;
- cp->rx_ring[i].addr_lo = cpu_to_le32(cp->rx_skb[i].mapping);
- cp->rx_ring[i].addr_hi = 0;
- }
- return 0;
- err_out:
- cp_clean_rings(cp);
- return -ENOMEM;
- }
- static int cp_init_rings (struct cp_private *cp)
- {
- memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
- cp->tx_ring[CP_TX_RING_SIZE - 1].opts1 = cpu_to_le32(RingEnd);
- cp->rx_tail = 0;
- cp->tx_head = cp->tx_tail = 0;
- return cp_refill_rx (cp);
- }
- static int cp_alloc_rings (struct cp_private *cp)
- {
- cp->rx_ring = pci_alloc_consistent(cp->pdev, CP_RING_BYTES, &cp->ring_dma);
- if (!cp->rx_ring)
- return -ENOMEM;
- cp->tx_ring = &cp->rx_ring[CP_RX_RING_SIZE];
- return cp_init_rings(cp);
- }
- static void cp_clean_rings (struct cp_private *cp)
- {
- unsigned i;
- memset(cp->rx_ring, 0, sizeof(struct cp_desc) * CP_RX_RING_SIZE);
- memset(cp->tx_ring, 0, sizeof(struct cp_desc) * CP_TX_RING_SIZE);
- for (i = 0; i < CP_RX_RING_SIZE; i++) {
- if (cp->rx_skb[i].skb) {
- pci_unmap_single(cp->pdev, cp->rx_skb[i].mapping,
- cp->rx_buf_sz, PCI_DMA_FROMDEVICE);
- dev_kfree_skb(cp->rx_skb[i].skb);
- }
- }
- for (i = 0; i < CP_TX_RING_SIZE; i++) {
- if (cp->tx_skb[i].skb) {
- struct sk_buff *skb = cp->tx_skb[i].skb;
- pci_unmap_single(cp->pdev, cp->tx_skb[i].mapping,
- skb->len, PCI_DMA_TODEVICE);
- dev_kfree_skb(skb);
- cp->net_stats.tx_dropped++;
- }
- }
- memset(&cp->rx_skb, 0, sizeof(struct ring_info) * CP_RX_RING_SIZE);
- memset(&cp->tx_skb, 0, sizeof(struct ring_info) * CP_TX_RING_SIZE);
- }
- static void cp_free_rings (struct cp_private *cp)
- {
- cp_clean_rings(cp);
- pci_free_consistent(cp->pdev, CP_RING_BYTES, cp->rx_ring, cp->ring_dma);
- cp->rx_ring = NULL;
- cp->tx_ring = NULL;
- }
- static int cp_open (struct net_device *dev)
- {
- struct cp_private *cp = dev->priv;
- int rc;
- if (netif_msg_ifup(cp))
- printk(KERN_DEBUG "%s: enabling interfacen", dev->name);
- cp->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
- rc = cp_alloc_rings(cp);
- if (rc)
- return rc;
- cp_init_hw(cp);
- rc = request_irq(dev->irq, cp_interrupt, SA_SHIRQ, dev->name, dev);
- if (rc)
- goto err_out_hw;
- netif_start_queue(dev);
- return 0;
- err_out_hw:
- cp_stop_hw(cp);
- cp_free_rings(cp);
- return rc;
- }
- static int cp_close (struct net_device *dev)
- {
- struct cp_private *cp = dev->priv;
- if (netif_msg_ifdown(cp))
- printk(KERN_DEBUG "%s: disabling interfacen", dev->name);
- netif_stop_queue(dev);
- cp_stop_hw(cp);
- free_irq(dev->irq, dev);
- cp_free_rings(cp);
- return 0;
- }
- static char mii_2_8139_map[8] = {
- BasicModeCtrl,
- BasicModeStatus,
- 0,
- 0,
- NWayAdvert,
- NWayLPAR,
- NWayExpansion,
- 0
- };
- static int mdio_read(struct net_device *dev, int phy_id, int location)
- {
- struct cp_private *cp = dev->priv;
- return location < 8 && mii_2_8139_map[location] ?
- readw(cp->regs + mii_2_8139_map[location]) : 0;
- }
- static void mdio_write(struct net_device *dev, int phy_id, int location,
- int value)
- {
- struct cp_private *cp = dev->priv;
- if (location == 0) {
- cpw8(Cfg9346, Cfg9346_Unlock);
- cpw16(BasicModeCtrl, value);
- cpw8(Cfg9346, Cfg9346_Lock);
- } else if (location < 8 && mii_2_8139_map[location])
- cpw16(mii_2_8139_map[location], value);
- }
- static int cp_ethtool_ioctl (struct cp_private *cp, void *useraddr)
- {
- u32 ethcmd;
- /* dev_ioctl() in ../../net/core/dev.c has already checked
- capable(CAP_NET_ADMIN), so don't bother with that here. */
- if (get_user(ethcmd, (u32 *)useraddr))
- return -EFAULT;
- switch (ethcmd) {
- case ETHTOOL_GDRVINFO: {
- struct ethtool_drvinfo info = { ETHTOOL_GDRVINFO };
- strcpy (info.driver, DRV_NAME);
- strcpy (info.version, DRV_VERSION);
- strcpy (info.bus_info, cp->pdev->slot_name);
- if (copy_to_user (useraddr, &info, sizeof (info)))
- return -EFAULT;
- return 0;
- }
- /* get settings */
- case ETHTOOL_GSET: {
- struct ethtool_cmd ecmd = { ETHTOOL_GSET };
- spin_lock_irq(&cp->lock);
- mii_ethtool_gset(&cp->mii_if, &ecmd);
- spin_unlock_irq(&cp->lock);
- if (copy_to_user(useraddr, &ecmd, sizeof(ecmd)))
- return -EFAULT;
- return 0;
- }
- /* set settings */
- case ETHTOOL_SSET: {
- int r;
- struct ethtool_cmd ecmd;
- if (copy_from_user(&ecmd, useraddr, sizeof(ecmd)))
- return -EFAULT;
- spin_lock_irq(&cp->lock);
- r = mii_ethtool_sset(&cp->mii_if, &ecmd);
- spin_unlock_irq(&cp->lock);
- return r;
- }
- /* restart autonegotiation */
- case ETHTOOL_NWAY_RST: {
- return mii_nway_restart(&cp->mii_if);
- }
- /* get link status */
- case ETHTOOL_GLINK: {
- struct ethtool_value edata = {ETHTOOL_GLINK};
- edata.data = mii_link_ok(&cp->mii_if);
- if (copy_to_user(useraddr, &edata, sizeof(edata)))
- return -EFAULT;
- return 0;
- }
- /* get message-level */
- case ETHTOOL_GMSGLVL: {
- struct ethtool_value edata = {ETHTOOL_GMSGLVL};
- edata.data = cp->msg_enable;
- if (copy_to_user(useraddr, &edata, sizeof(edata)))
- return -EFAULT;
- return 0;
- }
- /* set message-level */
- case ETHTOOL_SMSGLVL: {
- struct ethtool_value edata;
- if (copy_from_user(&edata, useraddr, sizeof(edata)))
- return -EFAULT;
- cp->msg_enable = edata.data;
- return 0;
- }
- default:
- break;
- }
- return -EOPNOTSUPP;
- }
- static int cp_ioctl (struct net_device *dev, struct ifreq *rq, int cmd)
- {
- struct cp_private *cp = dev->priv;
- int rc = 0;
- if (!netif_running(dev))
- return -EINVAL;
- switch (cmd) {
- case SIOCETHTOOL:
- return cp_ethtool_ioctl(cp, (void *) rq->ifr_data);
- default:
- rc = -EOPNOTSUPP;
- break;
- }
- return rc;
- }
- /* Serial EEPROM section. */
- /* EEPROM_Ctrl bits. */
- #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */
- #define EE_CS 0x08 /* EEPROM chip select. */
- #define EE_DATA_WRITE 0x02 /* EEPROM chip data in. */
- #define EE_WRITE_0 0x00
- #define EE_WRITE_1 0x02
- #define EE_DATA_READ 0x01 /* EEPROM chip data out. */
- #define EE_ENB (0x80 | EE_CS)
- /* Delay between EEPROM clock transitions.
- No extra delay is needed with 33Mhz PCI, but 66Mhz may change this.
- */
- #define eeprom_delay() readl(ee_addr)
- /* The EEPROM commands include the alway-set leading bit. */
- #define EE_WRITE_CMD (5)
- #define EE_READ_CMD (6)
- #define EE_ERASE_CMD (7)
- static int __devinit read_eeprom (void *ioaddr, int location, int addr_len)
- {
- int i;
- unsigned retval = 0;
- void *ee_addr = ioaddr + Cfg9346;
- int read_cmd = location | (EE_READ_CMD << addr_len);
- writeb (EE_ENB & ~EE_CS, ee_addr);
- writeb (EE_ENB, ee_addr);
- eeprom_delay ();
- /* Shift the read command bits out. */
- for (i = 4 + addr_len; i >= 0; i--) {
- int dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
- writeb (EE_ENB | dataval, ee_addr);
- eeprom_delay ();
- writeb (EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
- eeprom_delay ();
- }
- writeb (EE_ENB, ee_addr);
- eeprom_delay ();
- for (i = 16; i > 0; i--) {
- writeb (EE_ENB | EE_SHIFT_CLK, ee_addr);
- eeprom_delay ();
- retval =
- (retval << 1) | ((readb (ee_addr) & EE_DATA_READ) ? 1 :
- 0);
- writeb (EE_ENB, ee_addr);
- eeprom_delay ();
- }
- /* Terminate the EEPROM access. */
- writeb (~EE_CS, ee_addr);
- eeprom_delay ();
- return retval;
- }
- static int __devinit cp_init_one (struct pci_dev *pdev,
- const struct pci_device_id *ent)
- {
- struct net_device *dev;
- struct cp_private *cp;
- int rc;
- void *regs;
- long pciaddr;
- unsigned addr_len, i;
- u8 pci_rev, cache_size;
- u16 pci_command;
- #ifndef MODULE
- static int version_printed;
- if (version_printed++ == 0)
- printk("%s", version);
- #endif
- pci_read_config_byte(pdev, PCI_REVISION_ID, &pci_rev);
- if (pdev->vendor == PCI_VENDOR_ID_REALTEK &&
- pdev->device == PCI_DEVICE_ID_REALTEK_8139 && pci_rev < 0x20) {
- printk(KERN_ERR PFX "pci dev %s (id %04x:%04x rev %02x) is not an 8139C+ compatible chipn",
- pdev->slot_name, pdev->vendor, pdev->device, pci_rev);
- printk(KERN_ERR PFX "Try the "8139too" driver instead.n");
- return -ENODEV;
- }
- dev = alloc_etherdev(sizeof(struct cp_private));
- if (!dev)
- return -ENOMEM;
- SET_MODULE_OWNER(dev);
- cp = dev->priv;
- cp->pdev = pdev;
- cp->dev = dev;
- cp->msg_enable = (debug < 0 ? CP_DEF_MSG_ENABLE : debug);
- spin_lock_init (&cp->lock);
- cp->mii_if.dev = dev;
- cp->mii_if.mdio_read = mdio_read;
- cp->mii_if.mdio_write = mdio_write;
- cp->mii_if.phy_id = CP_INTERNAL_PHY;
- rc = pci_enable_device(pdev);
- if (rc)
- goto err_out_free;
- rc = pci_request_regions(pdev, DRV_NAME);
- if (rc)
- goto err_out_disable;
- if (pdev->irq < 2) {
- rc = -EIO;
- printk(KERN_ERR PFX "invalid irq (%d) for pci dev %sn",
- pdev->irq, pdev->slot_name);
- goto err_out_res;
- }
- pciaddr = pci_resource_start(pdev, 1);
- if (!pciaddr) {
- rc = -EIO;
- printk(KERN_ERR PFX "no MMIO resource for pci dev %sn",
- pdev->slot_name);
- goto err_out_res;
- }
- if (pci_resource_len(pdev, 1) < CP_REGS_SIZE) {
- rc = -EIO;
- printk(KERN_ERR PFX "MMIO resource (%lx) too small on pci dev %sn",
- pci_resource_len(pdev, 1), pdev->slot_name);
- goto err_out_res;
- }
- regs = ioremap_nocache(pciaddr, CP_REGS_SIZE);
- if (!regs) {
- rc = -EIO;
- printk(KERN_ERR PFX "Cannot map PCI MMIO (%lx@%lx) on pci dev %sn",
- pci_resource_len(pdev, 1), pciaddr, pdev->slot_name);
- goto err_out_res;
- }
- dev->base_addr = (unsigned long) regs;
- cp->regs = regs;
- cp_stop_hw(cp);
- /* read MAC address from EEPROM */
- addr_len = read_eeprom (regs, 0, 8) == 0x8129 ? 8 : 6;
- for (i = 0; i < 3; i++)
- ((u16 *) (dev->dev_addr))[i] =
- le16_to_cpu (read_eeprom (regs, i + 7, addr_len));
- dev->open = cp_open;
- dev->stop = cp_close;
- dev->set_multicast_list = cp_set_rx_mode;
- dev->hard_start_xmit = cp_start_xmit;
- dev->get_stats = cp_get_stats;
- dev->do_ioctl = cp_ioctl;
- #if 0
- dev->tx_timeout = cp_tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
- #endif
- #ifdef CP_TX_CHECKSUM
- dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
- #endif
- dev->irq = pdev->irq;
- rc = register_netdev(dev);
- if (rc)
- goto err_out_iomap;
- printk (KERN_INFO "%s: %s at 0x%lx, "
- "%02x:%02x:%02x:%02x:%02x:%02x, "
- "IRQ %dn",
- dev->name,
- "RTL-8139C+",
- dev->base_addr,
- dev->dev_addr[0], dev->dev_addr[1],
- dev->dev_addr[2], dev->dev_addr[3],
- dev->dev_addr[4], dev->dev_addr[5],
- dev->irq);
- pci_set_drvdata(pdev, dev);
- /*
- * Looks like this is necessary to deal with on all architectures,
- * even this %$#%$# N440BX Intel based thing doesn't get it right.
- * Ie. having two NICs in the machine, one will have the cache
- * line set at boot time, the other will not.
- */
- pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &cache_size);
- cache_size <<= 2;
- if (cache_size != SMP_CACHE_BYTES) {
- printk(KERN_INFO "%s: PCI cache line size set incorrectly "
- "(%i bytes) by BIOS/FW, ", dev->name, cache_size);
- if (cache_size > SMP_CACHE_BYTES)
- printk("expecting %in", SMP_CACHE_BYTES);
- else {
- printk("correcting to %in", SMP_CACHE_BYTES);
- pci_write_config_byte(pdev, PCI_CACHE_LINE_SIZE,
- SMP_CACHE_BYTES >> 2);
- }
- }
- /* enable busmastering and memory-write-invalidate */
- pci_read_config_word(pdev, PCI_COMMAND, &pci_command);
- if (!(pci_command & PCI_COMMAND_INVALIDATE)) {
- pci_command |= PCI_COMMAND_INVALIDATE;
- pci_write_config_word(pdev, PCI_COMMAND, pci_command);
- }
- pci_set_master(pdev);
- return 0;
- err_out_iomap:
- iounmap(regs);
- err_out_res:
- pci_release_regions(pdev);
- err_out_disable:
- pci_disable_device(pdev);
- err_out_free:
- kfree(dev);
- return rc;
- }
- static void __devexit cp_remove_one (struct pci_dev *pdev)
- {
- struct net_device *dev = pci_get_drvdata(pdev);
- struct cp_private *cp = dev->priv;
- if (!dev)
- BUG();
- unregister_netdev(dev);
- iounmap(cp->regs);
- pci_release_regions(pdev);
- pci_disable_device(pdev);
- pci_set_drvdata(pdev, NULL);
- kfree(dev);
- }
- static struct pci_driver cp_driver = {
- name: DRV_NAME,
- id_table: cp_pci_tbl,
- probe: cp_init_one,
- remove: __devexit_p(cp_remove_one),
- };
- static int __init cp_init (void)
- {
- #ifdef MODULE
- printk("%s", version);
- #endif
- return pci_module_init (&cp_driver);
- }
- static void __exit cp_exit (void)
- {
- pci_unregister_driver (&cp_driver);
- }
- module_init(cp_init);
- module_exit(cp_exit);