fealnx.c
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上传日期:2013-02-24
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- /*
- Written 1998-2000 by Donald Becker.
- 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.
- The author may be reached as becker@scyld.com, or C/O
- Scyld Computing Corporation
- 410 Severn Ave., Suite 210
- Annapolis MD 21403
- Support information and updates available at
- http://www.scyld.com/network/pci-skeleton.html
- Linux kernel updates:
- Version 2.51, Nov 17, 2001 (jgarzik):
- - Add ethtool support
- - Replace some MII-related magic numbers with constants
- */
- #define DRV_NAME "fealnx"
- #define DRV_VERSION "2.51"
- #define DRV_RELDATE "Nov-17-2001"
- static int debug; /* 1-> print debug message */
- static int max_interrupt_work = 20;
- /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). */
- static int multicast_filter_limit = 32;
- /* Set the copy breakpoint for the copy-only-tiny-frames scheme. */
- /* Setting to > 1518 effectively disables this feature. */
- static int rx_copybreak;
- /* Used to pass the media type, etc. */
- /* Both 'options[]' and 'full_duplex[]' should exist for driver */
- /* interoperability. */
- /* The media type is usually passed in 'options[]'. */
- #define MAX_UNITS 8 /* More are supported, limit only on options */
- static int options[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
- static int full_duplex[MAX_UNITS] = { -1, -1, -1, -1, -1, -1, -1, -1 };
- /* Operational parameters that are set at compile time. */
- /* Keep the ring sizes a power of two for compile efficiency. */
- /* The compiler will convert <unsigned>'%'<2^N> into a bit mask. */
- /* Making the Tx ring too large decreases the effectiveness of channel */
- /* bonding and packet priority. */
- /* There are no ill effects from too-large receive rings. */
- // 88-12-9 modify,
- // #define TX_RING_SIZE 16
- // #define RX_RING_SIZE 32
- #define TX_RING_SIZE 6
- #define RX_RING_SIZE 12
- #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct fealnx_desc)
- #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct fealnx_desc)
- /* Operational parameters that usually are not changed. */
- /* Time in jiffies before concluding the transmitter is hung. */
- #define TX_TIMEOUT (2*HZ)
- #define PKT_BUF_SZ 1536 /* Size of each temporary Rx buffer. */
- /* Include files, designed to support most kernel versions 2.0.0 and later. */
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/sched.h>
- #include <linux/string.h>
- #include <linux/timer.h>
- #include <linux/errno.h>
- #include <linux/ioport.h>
- #include <linux/slab.h>
- #include <linux/interrupt.h>
- #include <linux/pci.h>
- #include <linux/netdevice.h>
- #include <linux/etherdevice.h>
- #include <linux/skbuff.h>
- #include <linux/init.h>
- #include <linux/mii.h>
- #include <linux/ethtool.h>
- #include <asm/processor.h> /* Processor type for cache alignment. */
- #include <asm/bitops.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 ".c:v" DRV_VERSION " " DRV_RELDATE "n";
- /* This driver was written to use PCI memory space, however some x86 systems
- work only with I/O space accesses. */
- #ifndef __alpha__
- #define USE_IO_OPS
- #endif
- #ifdef USE_IO_OPS
- #undef readb
- #undef readw
- #undef readl
- #undef writeb
- #undef writew
- #undef writel
- #define readb inb
- #define readw inw
- #define readl inl
- #define writeb outb
- #define writew outw
- #define writel outl
- #endif
- /* Kernel compatibility defines, some common to David Hinds' PCMCIA package. */
- /* This is only in the support-all-kernels source code. */
- #define RUN_AT(x) (jiffies + (x))
- MODULE_AUTHOR("Myson or whoever");
- MODULE_DESCRIPTION("Myson MTD-8xx 100/10M Ethernet PCI Adapter Driver");
- MODULE_LICENSE("GPL");
- MODULE_PARM(max_interrupt_work, "i");
- //MODULE_PARM(min_pci_latency, "i");
- MODULE_PARM(debug, "i");
- MODULE_PARM(rx_copybreak, "i");
- MODULE_PARM(multicast_filter_limit, "i");
- MODULE_PARM(options, "1-" __MODULE_STRING(MAX_UNITS) "i");
- MODULE_PARM(full_duplex, "1-" __MODULE_STRING(MAX_UNITS) "i");
- MODULE_PARM_DESC(max_interrupt_work, "fealnx maximum events handled per interrupt");
- MODULE_PARM_DESC(debug, "fealnx enable debugging (0-1)");
- MODULE_PARM_DESC(rx_copybreak, "fealnx copy breakpoint for copy-only-tiny-frames");
- MODULE_PARM_DESC(multicast_filter_limit, "fealnx maximum number of filtered multicast addresses");
- MODULE_PARM_DESC(options, "fealnx: Bits 0-3: media type, bit 17: full duplex");
- MODULE_PARM_DESC(full_duplex, "fealnx full duplex setting(s) (1)");
- #define MIN_REGION_SIZE 136
- enum pci_flags_bit {
- PCI_USES_IO = 1,
- PCI_USES_MEM = 2,
- PCI_USES_MASTER = 4,
- PCI_ADDR0 = 0x10 << 0,
- PCI_ADDR1 = 0x10 << 1,
- PCI_ADDR2 = 0x10 << 2,
- PCI_ADDR3 = 0x10 << 3,
- };
- /* A chip capabilities table, matching the entries in pci_tbl[] above. */
- enum chip_capability_flags {
- HAS_MII_XCVR,
- HAS_CHIP_XCVR,
- };
- /* 89/6/13 add, */
- /* for different PHY */
- enum phy_type_flags {
- MysonPHY = 1,
- AhdocPHY = 2,
- SeeqPHY = 3,
- MarvellPHY = 4,
- Myson981 = 5,
- LevelOnePHY = 6,
- OtherPHY = 10,
- };
- struct chip_info {
- char *chip_name;
- int io_size;
- int flags;
- };
- static struct chip_info skel_netdrv_tbl[] = {
- {"100/10M Ethernet PCI Adapter", 136, HAS_MII_XCVR},
- {"100/10M Ethernet PCI Adapter", 136, HAS_CHIP_XCVR},
- {"1000/100/10M Ethernet PCI Adapter", 136, HAS_MII_XCVR},
- };
- /* Offsets to the Command and Status Registers. */
- enum fealnx_offsets {
- PAR0 = 0x0, /* physical address 0-3 */
- PAR1 = 0x04, /* physical address 4-5 */
- MAR0 = 0x08, /* multicast address 0-3 */
- MAR1 = 0x0C, /* multicast address 4-7 */
- FAR0 = 0x10, /* flow-control address 0-3 */
- FAR1 = 0x14, /* flow-control address 4-5 */
- TCRRCR = 0x18, /* receive & transmit configuration */
- BCR = 0x1C, /* bus command */
- TXPDR = 0x20, /* transmit polling demand */
- RXPDR = 0x24, /* receive polling demand */
- RXCWP = 0x28, /* receive current word pointer */
- TXLBA = 0x2C, /* transmit list base address */
- RXLBA = 0x30, /* receive list base address */
- ISR = 0x34, /* interrupt status */
- IMR = 0x38, /* interrupt mask */
- FTH = 0x3C, /* flow control high/low threshold */
- MANAGEMENT = 0x40, /* bootrom/eeprom and mii management */
- TALLY = 0x44, /* tally counters for crc and mpa */
- TSR = 0x48, /* tally counter for transmit status */
- BMCRSR = 0x4c, /* basic mode control and status */
- PHYIDENTIFIER = 0x50, /* phy identifier */
- ANARANLPAR = 0x54, /* auto-negotiation advertisement and link
- partner ability */
- ANEROCR = 0x58, /* auto-negotiation expansion and pci conf. */
- BPREMRPSR = 0x5c, /* bypass & receive error mask and phy status */
- };
- /* Bits in the interrupt status/enable registers. */
- /* The bits in the Intr Status/Enable registers, mostly interrupt sources. */
- enum intr_status_bits {
- RFCON = 0x00020000, /* receive flow control xon packet */
- RFCOFF = 0x00010000, /* receive flow control xoff packet */
- LSCStatus = 0x00008000, /* link status change */
- ANCStatus = 0x00004000, /* autonegotiation completed */
- FBE = 0x00002000, /* fatal bus error */
- FBEMask = 0x00001800, /* mask bit12-11 */
- ParityErr = 0x00000000, /* parity error */
- TargetErr = 0x00001000, /* target abort */
- MasterErr = 0x00000800, /* master error */
- TUNF = 0x00000400, /* transmit underflow */
- ROVF = 0x00000200, /* receive overflow */
- ETI = 0x00000100, /* transmit early int */
- ERI = 0x00000080, /* receive early int */
- CNTOVF = 0x00000040, /* counter overflow */
- RBU = 0x00000020, /* receive buffer unavailable */
- TBU = 0x00000010, /* transmit buffer unavilable */
- TI = 0x00000008, /* transmit interrupt */
- RI = 0x00000004, /* receive interrupt */
- RxErr = 0x00000002, /* receive error */
- };
- /* Bits in the NetworkConfig register. */
- enum rx_mode_bits {
- RxModeMask = 0xe0,
- PROM = 0x80, /* promiscuous mode */
- AB = 0x40, /* accept broadcast */
- AM = 0x20, /* accept mutlicast */
- ARP = 0x08, /* receive runt pkt */
- ALP = 0x04, /* receive long pkt */
- SEP = 0x02, /* receive error pkt */
- };
- /* The Tulip Rx and Tx buffer descriptors. */
- struct fealnx_desc {
- s32 status;
- s32 control;
- u32 buffer;
- u32 next_desc;
- struct fealnx_desc *next_desc_logical;
- struct sk_buff *skbuff;
- u32 reserved1;
- u32 reserved2;
- };
- /* Bits in network_desc.status */
- enum rx_desc_status_bits {
- RXOWN = 0x80000000, /* own bit */
- FLNGMASK = 0x0fff0000, /* frame length */
- FLNGShift = 16,
- MARSTATUS = 0x00004000, /* multicast address received */
- BARSTATUS = 0x00002000, /* broadcast address received */
- PHYSTATUS = 0x00001000, /* physical address received */
- RXFSD = 0x00000800, /* first descriptor */
- RXLSD = 0x00000400, /* last descriptor */
- ErrorSummary = 0x80, /* error summary */
- RUNT = 0x40, /* runt packet received */
- LONG = 0x20, /* long packet received */
- FAE = 0x10, /* frame align error */
- CRC = 0x08, /* crc error */
- RXER = 0x04, /* receive error */
- };
- enum rx_desc_control_bits {
- RXIC = 0x00800000, /* interrupt control */
- RBSShift = 0,
- };
- enum tx_desc_status_bits {
- TXOWN = 0x80000000, /* own bit */
- JABTO = 0x00004000, /* jabber timeout */
- CSL = 0x00002000, /* carrier sense lost */
- LC = 0x00001000, /* late collision */
- EC = 0x00000800, /* excessive collision */
- UDF = 0x00000400, /* fifo underflow */
- DFR = 0x00000200, /* deferred */
- HF = 0x00000100, /* heartbeat fail */
- NCRMask = 0x000000ff, /* collision retry count */
- NCRShift = 0,
- };
- enum tx_desc_control_bits {
- TXIC = 0x80000000, /* interrupt control */
- ETIControl = 0x40000000, /* early transmit interrupt */
- TXLD = 0x20000000, /* last descriptor */
- TXFD = 0x10000000, /* first descriptor */
- CRCEnable = 0x08000000, /* crc control */
- PADEnable = 0x04000000, /* padding control */
- RetryTxLC = 0x02000000, /* retry late collision */
- PKTSMask = 0x3ff800, /* packet size bit21-11 */
- PKTSShift = 11,
- TBSMask = 0x000007ff, /* transmit buffer bit 10-0 */
- TBSShift = 0,
- };
- /* BootROM/EEPROM/MII Management Register */
- #define MASK_MIIR_MII_READ 0x00000000
- #define MASK_MIIR_MII_WRITE 0x00000008
- #define MASK_MIIR_MII_MDO 0x00000004
- #define MASK_MIIR_MII_MDI 0x00000002
- #define MASK_MIIR_MII_MDC 0x00000001
- /* ST+OP+PHYAD+REGAD+TA */
- #define OP_READ 0x6000 /* ST:01+OP:10+PHYAD+REGAD+TA:Z0 */
- #define OP_WRITE 0x5002 /* ST:01+OP:01+PHYAD+REGAD+TA:10 */
- /* ------------------------------------------------------------------------- */
- /* Constants for Myson PHY */
- /* ------------------------------------------------------------------------- */
- #define MysonPHYID 0xd0000302
- /* 89-7-27 add, (begin) */
- #define MysonPHYID0 0x0302
- #define StatusRegister 18
- #define SPEED100 0x0400 // bit10
- #define FULLMODE 0x0800 // bit11
- /* 89-7-27 add, (end) */
- /* ------------------------------------------------------------------------- */
- /* Constants for Seeq 80225 PHY */
- /* ------------------------------------------------------------------------- */
- #define SeeqPHYID0 0x0016
- #define MIIRegister18 18
- #define SPD_DET_100 0x80
- #define DPLX_DET_FULL 0x40
- /* ------------------------------------------------------------------------- */
- /* Constants for Ahdoc 101 PHY */
- /* ------------------------------------------------------------------------- */
- #define AhdocPHYID0 0x0022
- #define DiagnosticReg 18
- #define DPLX_FULL 0x0800
- #define Speed_100 0x0400
- /* 89/6/13 add, */
- /* -------------------------------------------------------------------------- */
- /* Constants */
- /* -------------------------------------------------------------------------- */
- #define MarvellPHYID0 0x0141
- #define LevelOnePHYID0 0x0013
- #define MII1000BaseTControlReg 9
- #define MII1000BaseTStatusReg 10
- #define SpecificReg 17
- /* for 1000BaseT Control Register */
- #define PHYAbletoPerform1000FullDuplex 0x0200
- #define PHYAbletoPerform1000HalfDuplex 0x0100
- #define PHY1000AbilityMask 0x300
- // for phy specific status register, marvell phy.
- #define SpeedMask 0x0c000
- #define Speed_1000M 0x08000
- #define Speed_100M 0x4000
- #define Speed_10M 0
- #define Full_Duplex 0x2000
- // 89/12/29 add, for phy specific status register, levelone phy, (begin)
- #define LXT1000_100M 0x08000
- #define LXT1000_1000M 0x0c000
- #define LXT1000_Full 0x200
- // 89/12/29 add, for phy specific status register, levelone phy, (end)
- /* for 3-in-1 case */
- #define PS10 0x00080000
- #define FD 0x00100000
- #define PS1000 0x00010000
- #define LinkIsUp2 0x00040000
- /* for PHY */
- #define LinkIsUp 0x0004
- struct netdev_private {
- /* Descriptor rings first for alignment. */
- struct fealnx_desc *rx_ring;
- struct fealnx_desc *tx_ring;
- dma_addr_t rx_ring_dma;
- dma_addr_t tx_ring_dma;
- spinlock_t lock;
- struct net_device_stats stats;
- /* Media monitoring timer. */
- struct timer_list timer;
- /* Frequently used values: keep some adjacent for cache effect. */
- int flags;
- struct pci_dev *pci_dev;
- unsigned long crvalue;
- unsigned long bcrvalue;
- unsigned long imrvalue;
- struct fealnx_desc *cur_rx;
- struct fealnx_desc *lack_rxbuf;
- int really_rx_count;
- struct fealnx_desc *cur_tx;
- struct fealnx_desc *cur_tx_copy;
- int really_tx_count;
- int free_tx_count;
- unsigned int rx_buf_sz; /* Based on MTU+slack. */
- /* These values are keep track of the transceiver/media in use. */
- unsigned int linkok;
- unsigned int line_speed;
- unsigned int duplexmode;
- unsigned int default_port:4; /* Last dev->if_port value. */
- unsigned int PHYType;
- /* MII transceiver section. */
- int mii_cnt; /* MII device addresses. */
- unsigned char phys[2]; /* MII device addresses. */
- struct mii_if_info mii;
- };
- static int mdio_read(struct net_device *dev, int phy_id, int location);
- static void mdio_write(struct net_device *dev, int phy_id, int location, int value);
- static int netdev_open(struct net_device *dev);
- static void getlinktype(struct net_device *dev);
- static void getlinkstatus(struct net_device *dev);
- static void netdev_timer(unsigned long data);
- static void tx_timeout(struct net_device *dev);
- static void init_ring(struct net_device *dev);
- static int start_tx(struct sk_buff *skb, struct net_device *dev);
- static void intr_handler(int irq, void *dev_instance, struct pt_regs *regs);
- static int netdev_rx(struct net_device *dev);
- static inline unsigned ether_crc(int length, unsigned char *data);
- static void set_rx_mode(struct net_device *dev);
- static struct net_device_stats *get_stats(struct net_device *dev);
- static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
- static int netdev_close(struct net_device *dev);
- static void reset_rx_descriptors(struct net_device *dev);
- void stop_nic_tx(long ioaddr, long crvalue)
- {
- writel(crvalue & (~0x40000), ioaddr + TCRRCR);
- /* wait for tx stop */
- {
- int i = 0, delay = 0x1000;
- while ((!(readl(ioaddr + TCRRCR) & 0x04000000)) && (i < delay)) {
- ++i;
- }
- }
- }
- void stop_nic_rx(long ioaddr, long crvalue)
- {
- writel(crvalue & (~0x1), ioaddr + TCRRCR);
- /* wait for rx stop */
- {
- int i = 0, delay = 0x1000;
- while ((!(readl(ioaddr + TCRRCR) & 0x00008000)) && (i < delay)) {
- ++i;
- }
- }
- }
- static int __devinit fealnx_init_one(struct pci_dev *pdev,
- const struct pci_device_id *ent)
- {
- struct netdev_private *np;
- int i, option, err, irq;
- static int card_idx = -1;
- char boardname[12];
- long ioaddr;
- unsigned int chip_id = ent->driver_data;
- struct net_device *dev;
- void *ring_space;
- dma_addr_t ring_dma;
-
- /* when built into the kernel, we only print version if device is found */
- #ifndef MODULE
- static int printed_version;
- if (!printed_version++)
- printk (version);
- #endif
-
- card_idx++;
- sprintf(boardname, "fealnx%d", card_idx);
-
- option = card_idx < MAX_UNITS ? options[card_idx] : 0;
- i = pci_enable_device(pdev);
- if (i) return i;
- pci_set_master(pdev);
-
- #ifdef USE_IO_OPS
- ioaddr = pci_resource_len(pdev, 0);
- #else
- ioaddr = pci_resource_len(pdev, 1);
- #endif
- if (ioaddr < MIN_REGION_SIZE) {
- printk(KERN_ERR "%s: region size %ld too small, abortingn",
- boardname, ioaddr);
- return -ENODEV;
- }
- i = pci_request_regions(pdev, boardname);
- if (i) return i;
-
- irq = pdev->irq;
- #ifdef USE_IO_OPS
- ioaddr = pci_resource_start(pdev, 0);
- #else
- ioaddr = (long) ioremap(pci_resource_start(pdev, 1),
- pci_resource_len(pdev, 1));
- if (!ioaddr) {
- err = -ENOMEM;
- goto err_out_res;
- }
- #endif
-
- dev = alloc_etherdev(sizeof(struct netdev_private));
- if (!dev) {
- err = -ENOMEM;
- goto err_out_unmap;
- }
- SET_MODULE_OWNER(dev);
- /* read ethernet id */
- for (i = 0; i < 6; ++i)
- dev->dev_addr[i] = readb(ioaddr + PAR0 + i);
- /* Reset the chip to erase previous misconfiguration. */
- writel(0x00000001, ioaddr + BCR);
- dev->base_addr = ioaddr;
- dev->irq = irq;
- /* Make certain the descriptor lists are aligned. */
- np = dev->priv;
- spin_lock_init(&np->lock);
- np->pci_dev = pdev;
- np->flags = skel_netdrv_tbl[chip_id].flags;
- pci_set_drvdata(pdev, dev);
- np->mii.dev = dev;
- np->mii.mdio_read = mdio_read;
- np->mii.mdio_write = mdio_write;
- ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma);
- if (!ring_space) {
- err = -ENOMEM;
- goto err_out_free_dev;
- }
- np->rx_ring = (struct fealnx_desc *)ring_space;
- np->rx_ring_dma = ring_dma;
- ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma);
- if (!ring_space) {
- err = -ENOMEM;
- goto err_out_free_rx;
- }
- np->tx_ring = (struct fealnx_desc *)ring_space;
- np->tx_ring_dma = ring_dma;
- /* find the connected MII xcvrs */
- if (np->flags == HAS_MII_XCVR) {
- int phy, phy_idx = 0;
- for (phy = 1; phy < 32 && phy_idx < 4; phy++) {
- int mii_status = mdio_read(dev, phy, 1);
- if (mii_status != 0xffff && mii_status != 0x0000) {
- np->phys[phy_idx++] = phy;
- printk(KERN_INFO
- "%s: MII PHY found at address %d, status "
- "0x%4.4x.n", dev->name, phy, mii_status);
- /* get phy type */
- {
- unsigned int data;
- data = mdio_read(dev, np->phys[0], 2);
- if (data == SeeqPHYID0)
- np->PHYType = SeeqPHY;
- else if (data == AhdocPHYID0)
- np->PHYType = AhdocPHY;
- else if (data == MarvellPHYID0)
- np->PHYType = MarvellPHY;
- else if (data == MysonPHYID0)
- np->PHYType = Myson981;
- else if (data == LevelOnePHYID0)
- np->PHYType = LevelOnePHY;
- else
- np->PHYType = OtherPHY;
- }
- }
- }
- np->mii_cnt = phy_idx;
- if (phy_idx == 0) {
- printk(KERN_WARNING "%s: MII PHY not found -- this device may "
- "not operate correctly.n", dev->name);
- }
- } else {
- np->phys[0] = 32;
- /* 89/6/23 add, (begin) */
- /* get phy type */
- if (readl(dev->base_addr + PHYIDENTIFIER) == MysonPHYID)
- np->PHYType = MysonPHY;
- else
- np->PHYType = OtherPHY;
- }
- np->mii.phy_id = np->phys[0];
- if (dev->mem_start)
- option = dev->mem_start;
- /* The lower four bits are the media type. */
- if (option > 0) {
- if (option & 0x200)
- np->mii.full_duplex = 1;
- np->default_port = option & 15;
- }
- if (card_idx < MAX_UNITS && full_duplex[card_idx] > 0)
- np->mii.full_duplex = full_duplex[card_idx];
- if (np->mii.full_duplex) {
- printk(KERN_INFO "%s: Media type forced to Full Duplex.n", dev->name);
- /* 89/6/13 add, (begin) */
- // if (np->PHYType==MarvellPHY)
- if ((np->PHYType == MarvellPHY) || (np->PHYType == LevelOnePHY)) {
- unsigned int data;
- data = mdio_read(dev, np->phys[0], 9);
- data = (data & 0xfcff) | 0x0200;
- mdio_write(dev, np->phys[0], 9, data);
- }
- /* 89/6/13 add, (end) */
- if (np->flags == HAS_MII_XCVR)
- mdio_write(dev, np->phys[0], MII_ADVERTISE, ADVERTISE_FULL);
- else
- writel(ADVERTISE_FULL, dev->base_addr + ANARANLPAR);
- np->mii.duplex_lock = 1;
- }
- /* The chip-specific entries in the device structure. */
- dev->open = &netdev_open;
- dev->hard_start_xmit = &start_tx;
- dev->stop = &netdev_close;
- dev->get_stats = &get_stats;
- dev->set_multicast_list = &set_rx_mode;
- dev->do_ioctl = &mii_ioctl;
- dev->tx_timeout = tx_timeout;
- dev->watchdog_timeo = TX_TIMEOUT;
-
- err = register_netdev(dev);
- if (err)
- goto err_out_free_tx;
- printk(KERN_INFO "%s: %s at 0x%lx, ",
- dev->name, skel_netdrv_tbl[chip_id].chip_name, ioaddr);
- for (i = 0; i < 5; i++)
- printk("%2.2x:", dev->dev_addr[i]);
- printk("%2.2x, IRQ %d.n", dev->dev_addr[i], irq);
- return 0;
- err_out_free_tx:
- pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring, np->tx_ring_dma);
- err_out_free_rx:
- pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring, np->rx_ring_dma);
- err_out_free_dev:
- kfree(dev);
- err_out_unmap:
- #ifndef USE_IO_OPS
- iounmap((void *)ioaddr);
- err_out_res:
- #endif
- pci_release_regions(pdev);
- return err;
- }
- static void __devexit fealnx_remove_one(struct pci_dev *pdev)
- {
- struct net_device *dev = pci_get_drvdata(pdev);
- if (dev) {
- struct netdev_private *np = dev->priv;
- pci_free_consistent(pdev, TX_TOTAL_SIZE, np->tx_ring,
- np->tx_ring_dma);
- pci_free_consistent(pdev, RX_TOTAL_SIZE, np->rx_ring,
- np->rx_ring_dma);
- unregister_netdev(dev);
- #ifndef USE_IO_OPS
- iounmap((void *)dev->base_addr);
- #endif
- kfree(dev);
- pci_release_regions(pdev);
- pci_set_drvdata(pdev, NULL);
- } else
- printk(KERN_ERR "fealnx: remove for unknown devicen");
- }
- unsigned int m80x_read_tick(void)
- /* function: Reads the Timer tick count register which decrements by 2 from */
- /* 65536 to 0 every 1/36.414 of a second. Each 2 decrements of the *//* count represents 838 nsec's. */
- /* input : none. */
- /* output : none. */
- {
- unsigned char tmp;
- int value;
- writeb((char) 0x06, 0x43); // Command 8254 to latch T0's count
- // now read the count.
- tmp = (unsigned char) readb(0x40);
- value = ((int) tmp) << 8;
- tmp = (unsigned char) readb(0x40);
- value |= (((int) tmp) & 0xff);
- return (value);
- }
- void m80x_delay(unsigned int interval)
- /* function: to wait for a specified time. */
- /* input : interval ... the specified time. */
- /* output : none. */
- {
- unsigned int interval1, interval2, i = 0;
- interval1 = m80x_read_tick(); // get initial value
- do {
- interval2 = m80x_read_tick();
- if (interval1 < interval2)
- interval1 = interval2;
- ++i;
- } while (((interval1 - interval2) < (ushort) interval) && (i < 65535));
- }
- static ulong m80x_send_cmd_to_phy(long miiport, int opcode, int phyad, int regad)
- {
- ulong miir;
- int i;
- unsigned int mask, data;
- /* enable MII output */
- miir = (ulong) readl(miiport);
- miir &= 0xfffffff0;
- miir |= MASK_MIIR_MII_WRITE + MASK_MIIR_MII_MDO;
- /* send 32 1's preamble */
- for (i = 0; i < 32; i++) {
- /* low MDC; MDO is already high (miir) */
- miir &= ~MASK_MIIR_MII_MDC;
- writel(miir, miiport);
- /* high MDC */
- miir |= MASK_MIIR_MII_MDC;
- writel(miir, miiport);
- }
- /* calculate ST+OP+PHYAD+REGAD+TA */
- data = opcode | (phyad << 7) | (regad << 2);
- /* sent out */
- mask = 0x8000;
- while (mask) {
- /* low MDC, prepare MDO */
- miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
- if (mask & data)
- miir |= MASK_MIIR_MII_MDO;
- writel(miir, miiport);
- /* high MDC */
- miir |= MASK_MIIR_MII_MDC;
- writel(miir, miiport);
- m80x_delay(30);
- /* next */
- mask >>= 1;
- if (mask == 0x2 && opcode == OP_READ)
- miir &= ~MASK_MIIR_MII_WRITE;
- }
- return miir;
- }
- static int mdio_read(struct net_device *dev, int phyad, int regad)
- {
- long miiport = dev->base_addr + MANAGEMENT;
- ulong miir;
- unsigned int mask, data;
- miir = m80x_send_cmd_to_phy(miiport, OP_READ, phyad, regad);
- /* read data */
- mask = 0x8000;
- data = 0;
- while (mask) {
- /* low MDC */
- miir &= ~MASK_MIIR_MII_MDC;
- writel(miir, miiport);
- /* read MDI */
- miir = readl(miiport);
- if (miir & MASK_MIIR_MII_MDI)
- data |= mask;
- /* high MDC, and wait */
- miir |= MASK_MIIR_MII_MDC;
- writel(miir, miiport);
- m80x_delay((int) 30);
- /* next */
- mask >>= 1;
- }
- /* low MDC */
- miir &= ~MASK_MIIR_MII_MDC;
- writel(miir, miiport);
- return data & 0xffff;
- }
- static void mdio_write(struct net_device *dev, int phyad, int regad, int data)
- {
- long miiport = dev->base_addr + MANAGEMENT;
- ulong miir;
- unsigned int mask;
- miir = m80x_send_cmd_to_phy(miiport, OP_WRITE, phyad, regad);
- /* write data */
- mask = 0x8000;
- while (mask) {
- /* low MDC, prepare MDO */
- miir &= ~(MASK_MIIR_MII_MDC + MASK_MIIR_MII_MDO);
- if (mask & data)
- miir |= MASK_MIIR_MII_MDO;
- writel(miir, miiport);
- /* high MDC */
- miir |= MASK_MIIR_MII_MDC;
- writel(miir, miiport);
- /* next */
- mask >>= 1;
- }
- /* low MDC */
- miir &= ~MASK_MIIR_MII_MDC;
- writel(miir, miiport);
- return;
- }
- static int netdev_open(struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- long ioaddr = dev->base_addr;
- writel(0x00000001, ioaddr + BCR); /* Reset */
- if (request_irq(dev->irq, &intr_handler, SA_SHIRQ, dev->name, dev))
- return -EAGAIN;
- init_ring(dev);
- writel(np->rx_ring_dma, ioaddr + RXLBA);
- writel(np->tx_ring_dma, ioaddr + TXLBA);
- /* Initialize other registers. */
- /* Configure the PCI bus bursts and FIFO thresholds.
- 486: Set 8 longword burst.
- 586: no burst limit.
- Burst length 5:3
- 0 0 0 1
- 0 0 1 4
- 0 1 0 8
- 0 1 1 16
- 1 0 0 32
- 1 0 1 64
- 1 1 0 128
- 1 1 1 256
- Wait the specified 50 PCI cycles after a reset by initializing
- Tx and Rx queues and the address filter list.
- FIXME (Ueimor): optimistic for alpha + posted writes ? */
- #if defined(__powerpc__) || defined(__sparc__)
- // 89/9/1 modify,
- // np->bcrvalue=0x04 | 0x0x38; /* big-endian, 256 burst length */
- np->bcrvalue = 0x04 | 0x10; /* big-endian, tx 8 burst length */
- np->crvalue = 0xe00; /* rx 128 burst length */
- #elif defined(__alpha__) || defined(__x86_64__)
- // 89/9/1 modify,
- // np->bcrvalue=0x38; /* little-endian, 256 burst length */
- np->bcrvalue = 0x10; /* little-endian, 8 burst length */
- np->crvalue = 0xe00; /* rx 128 burst length */
- #elif defined(__i386__)
- #if defined(MODULE)
- // 89/9/1 modify,
- // np->bcrvalue=0x38; /* little-endian, 256 burst length */
- np->bcrvalue = 0x10; /* little-endian, 8 burst length */
- np->crvalue = 0xe00; /* rx 128 burst length */
- #else
- /* When not a module we can work around broken '486 PCI boards. */
- #define x86 boot_cpu_data.x86
- // 89/9/1 modify,
- // np->bcrvalue=(x86 <= 4 ? 0x10 : 0x38);
- np->bcrvalue = 0x10;
- np->crvalue = (x86 <= 4 ? 0xa00 : 0xe00);
- if (x86 <= 4)
- printk(KERN_INFO "%s: This is a 386/486 PCI system, setting burst "
- "length to %x.n", dev->name, (x86 <= 4 ? 0x10 : 0x38));
- #endif
- #else
- // 89/9/1 modify,
- // np->bcrvalue=0x38;
- np->bcrvalue = 0x10;
- np->cralue = 0xe00; /* rx 128 burst length */
- #warning Processor architecture undefined!
- #endif
- // 89/12/29 add,
- // 90/1/16 modify,
- // np->imrvalue=FBE|TUNF|CNTOVF|RBU|TI|RI;
- np->imrvalue = TUNF | CNTOVF | RBU | TI | RI;
- if (np->pci_dev->device == 0x891) {
- np->bcrvalue |= 0x200; /* set PROG bit */
- np->crvalue |= 0x02000000; /* set enhanced bit */
- np->imrvalue |= ETI;
- }
- writel(np->bcrvalue, ioaddr + BCR);
- if (dev->if_port == 0)
- dev->if_port = np->default_port;
- writel(0, dev->base_addr + RXPDR);
- // 89/9/1 modify,
- // np->crvalue = 0x00e40001; /* tx store and forward, tx/rx enable */
- np->crvalue |= 0x00e40001; /* tx store and forward, tx/rx enable */
- np->mii.full_duplex = np->mii.duplex_lock;
- getlinkstatus(dev);
- if (np->linkok)
- getlinktype(dev);
- set_rx_mode(dev);
- netif_start_queue(dev);
- /* Clear and Enable interrupts by setting the interrupt mask. */
- writel(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
- writel(np->imrvalue, ioaddr + IMR);
- if (debug)
- printk(KERN_DEBUG "%s: Done netdev_open().n", dev->name);
- /* Set the timer to check for link beat. */
- init_timer(&np->timer);
- np->timer.expires = RUN_AT(3 * HZ);
- np->timer.data = (unsigned long) dev;
- np->timer.function = &netdev_timer;
- /* timer handler */
- add_timer(&np->timer);
- return 0;
- }
- static void getlinkstatus(struct net_device *dev)
- /* function: Routine will read MII Status Register to get link status. */
- /* input : dev... pointer to the adapter block. */
- /* output : none. */
- {
- struct netdev_private *np = dev->priv;
- unsigned int i, DelayTime = 0x1000;
- np->linkok = 0;
- if (np->PHYType == MysonPHY) {
- for (i = 0; i < DelayTime; ++i) {
- if (readl(dev->base_addr + BMCRSR) & LinkIsUp2) {
- np->linkok = 1;
- return;
- }
- // delay
- m80x_delay(100);
- }
- } else {
- for (i = 0; i < DelayTime; ++i) {
- if (mdio_read(dev, np->phys[0], MII_BMSR) & BMSR_LSTATUS) {
- np->linkok = 1;
- return;
- }
- // delay
- m80x_delay(100);
- }
- }
- }
- static void getlinktype(struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- if (np->PHYType == MysonPHY) { /* 3-in-1 case */
- if (readl(dev->base_addr + TCRRCR) & FD)
- np->duplexmode = 2; /* full duplex */
- else
- np->duplexmode = 1; /* half duplex */
- if (readl(dev->base_addr + TCRRCR) & PS10)
- np->line_speed = 1; /* 10M */
- else
- np->line_speed = 2; /* 100M */
- } else {
- if (np->PHYType == SeeqPHY) { /* this PHY is SEEQ 80225 */
- unsigned int data;
- data = mdio_read(dev, np->phys[0], MIIRegister18);
- if (data & SPD_DET_100)
- np->line_speed = 2; /* 100M */
- else
- np->line_speed = 1; /* 10M */
- if (data & DPLX_DET_FULL)
- np->duplexmode = 2; /* full duplex mode */
- else
- np->duplexmode = 1; /* half duplex mode */
- } else if (np->PHYType == AhdocPHY) {
- unsigned int data;
- data = mdio_read(dev, np->phys[0], DiagnosticReg);
- if (data & Speed_100)
- np->line_speed = 2; /* 100M */
- else
- np->line_speed = 1; /* 10M */
- if (data & DPLX_FULL)
- np->duplexmode = 2; /* full duplex mode */
- else
- np->duplexmode = 1; /* half duplex mode */
- }
- /* 89/6/13 add, (begin) */
- else if (np->PHYType == MarvellPHY) {
- unsigned int data;
- data = mdio_read(dev, np->phys[0], SpecificReg);
- if (data & Full_Duplex)
- np->duplexmode = 2; /* full duplex mode */
- else
- np->duplexmode = 1; /* half duplex mode */
- data &= SpeedMask;
- if (data == Speed_1000M)
- np->line_speed = 3; /* 1000M */
- else if (data == Speed_100M)
- np->line_speed = 2; /* 100M */
- else
- np->line_speed = 1; /* 10M */
- }
- /* 89/6/13 add, (end) */
- /* 89/7/27 add, (begin) */
- else if (np->PHYType == Myson981) {
- unsigned int data;
- data = mdio_read(dev, np->phys[0], StatusRegister);
- if (data & SPEED100)
- np->line_speed = 2;
- else
- np->line_speed = 1;
- if (data & FULLMODE)
- np->duplexmode = 2;
- else
- np->duplexmode = 1;
- }
- /* 89/7/27 add, (end) */
- /* 89/12/29 add */
- else if (np->PHYType == LevelOnePHY) {
- unsigned int data;
- data = mdio_read(dev, np->phys[0], SpecificReg);
- if (data & LXT1000_Full)
- np->duplexmode = 2; /* full duplex mode */
- else
- np->duplexmode = 1; /* half duplex mode */
- data &= SpeedMask;
- if (data == LXT1000_1000M)
- np->line_speed = 3; /* 1000M */
- else if (data == LXT1000_100M)
- np->line_speed = 2; /* 100M */
- else
- np->line_speed = 1; /* 10M */
- }
- // chage crvalue
- // np->crvalue&=(~PS10)&(~FD);
- np->crvalue &= (~PS10) & (~FD) & (~PS1000);
- if (np->line_speed == 1)
- np->crvalue |= PS10;
- else if (np->line_speed == 3)
- np->crvalue |= PS1000;
- if (np->duplexmode == 2)
- np->crvalue |= FD;
- }
- }
- static void allocate_rx_buffers(struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- /* allocate skb for rx buffers */
- while (np->really_rx_count != RX_RING_SIZE) {
- struct sk_buff *skb;
- skb = dev_alloc_skb(np->rx_buf_sz);
- np->lack_rxbuf->skbuff = skb;
- if (skb == NULL)
- break; /* Better luck next round. */
- skb->dev = dev; /* Mark as being used by this device. */
- np->lack_rxbuf->buffer = pci_map_single(np->pci_dev, skb->tail,
- np->rx_buf_sz, PCI_DMA_FROMDEVICE);
- np->lack_rxbuf = np->lack_rxbuf->next_desc_logical;
- ++np->really_rx_count;
- }
- }
- static void netdev_timer(unsigned long data)
- {
- struct net_device *dev = (struct net_device *) data;
- struct netdev_private *np = dev->priv;
- long ioaddr = dev->base_addr;
- int next_tick = 10 * HZ;
- int old_crvalue = np->crvalue;
- unsigned int old_linkok = np->linkok;
- if (debug)
- printk(KERN_DEBUG "%s: Media selection timer tick, status %8.8x "
- "config %8.8x.n", dev->name, readl(ioaddr + ISR),
- readl(ioaddr + TCRRCR));
- if (np->flags == HAS_MII_XCVR) {
- getlinkstatus(dev);
- if ((old_linkok == 0) && (np->linkok == 1)) { /* we need to detect the media type again */
- getlinktype(dev);
- if (np->crvalue != old_crvalue) {
- stop_nic_tx(ioaddr, np->crvalue);
- stop_nic_rx(ioaddr, np->crvalue & (~0x40000));
- writel(np->crvalue, ioaddr + TCRRCR);
- }
- }
- }
- allocate_rx_buffers(dev);
- np->timer.expires = RUN_AT(next_tick);
- add_timer(&np->timer);
- }
- static void tx_timeout(struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- long ioaddr = dev->base_addr;
- int i;
- printk(KERN_WARNING "%s: Transmit timed out, status %8.8x,"
- " resetting...n", dev->name, readl(ioaddr + ISR));
- {
- printk(KERN_DEBUG " Rx ring %p: ", np->rx_ring);
- for (i = 0; i < RX_RING_SIZE; i++)
- printk(" %8.8x", (unsigned int) np->rx_ring[i].status);
- printk("n" KERN_DEBUG " Tx ring %p: ", np->tx_ring);
- for (i = 0; i < TX_RING_SIZE; i++)
- printk(" %4.4x", np->tx_ring[i].status);
- printk("n");
- }
- + dev->if_port = np->default_port;
- /* Reinit. Gross */
- /* Reset the chip's Tx and Rx processes. */
- stop_nic_tx(ioaddr, 0);
- reset_rx_descriptors(dev);
- /* Disable interrupts by clearing the interrupt mask. */
- writel(0x0000, ioaddr + IMR);
- /* Reset the chip to erase previous misconfiguration. */
- writel(0x00000001, ioaddr + BCR);
- /* Ueimor: wait for 50 PCI cycles (and flush posted writes btw).
- We surely wait too long (address+data phase). Who cares ? */
- for (i = 0; i < 50; i++) {
- readl(ioaddr + BCR);
- rmb();
- }
- writel((np->cur_tx - np->tx_ring)*sizeof(struct fealnx_desc) +
- np->tx_ring_dma, ioaddr + TXLBA);
- writel((np->cur_rx - np->rx_ring)*sizeof(struct fealnx_desc) +
- np->rx_ring_dma, ioaddr + RXLBA);
- writel(np->bcrvalue, ioaddr + BCR);
- writel(0, dev->base_addr + RXPDR);
- set_rx_mode(dev);
- /* Clear and Enable interrupts by setting the interrupt mask. */
- writel(FBE | TUNF | CNTOVF | RBU | TI | RI, ioaddr + ISR);
- writel(np->imrvalue, ioaddr + IMR);
- writel(0, dev->base_addr + TXPDR);
- dev->trans_start = jiffies;
- np->stats.tx_errors++;
- return;
- }
- /* Initialize the Rx and Tx rings, along with various 'dev' bits. */
- static void init_ring(struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- int i;
- /* initialize rx variables */
- np->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);
- np->cur_rx = &np->rx_ring[0];
- np->lack_rxbuf = NULL;
- np->really_rx_count = 0;
- /* initial rx descriptors. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- np->rx_ring[i].status = 0;
- np->rx_ring[i].control = np->rx_buf_sz << RBSShift;
- np->rx_ring[i].next_desc = np->rx_ring_dma +
- (i + 1)*sizeof(struct fealnx_desc);
- np->rx_ring[i].next_desc_logical = &np->rx_ring[i + 1];
- np->rx_ring[i].skbuff = NULL;
- }
- /* for the last rx descriptor */
- np->rx_ring[i - 1].next_desc = np->rx_ring_dma;
- np->rx_ring[i - 1].next_desc_logical = np->rx_ring;
- /* allocate skb for rx buffers */
- for (i = 0; i < RX_RING_SIZE; i++) {
- struct sk_buff *skb = dev_alloc_skb(np->rx_buf_sz);
- if (skb == NULL) {
- np->lack_rxbuf = &np->rx_ring[i];
- break;
- }
- ++np->really_rx_count;
- np->rx_ring[i].skbuff = skb;
- skb->dev = dev; /* Mark as being used by this device. */
- np->rx_ring[i].buffer = pci_map_single(np->pci_dev, skb->tail,
- np->rx_buf_sz, PCI_DMA_FROMDEVICE);
- np->rx_ring[i].status = RXOWN;
- np->rx_ring[i].control |= RXIC;
- }
- /* initialize tx variables */
- np->cur_tx = &np->tx_ring[0];
- np->cur_tx_copy = &np->tx_ring[0];
- np->really_tx_count = 0;
- np->free_tx_count = TX_RING_SIZE;
- for (i = 0; i < TX_RING_SIZE; i++) {
- np->tx_ring[i].status = 0;
- np->tx_ring[i].next_desc = np->tx_ring_dma +
- (i + 1)*sizeof(struct fealnx_desc);
- np->tx_ring[i].next_desc_logical = &np->tx_ring[i + 1];
- np->tx_ring[i].skbuff = NULL;
- }
- /* for the last tx descriptor */
- np->tx_ring[i - 1].next_desc = np->tx_ring_dma;
- np->tx_ring[i - 1].next_desc_logical = &np->tx_ring[0];
- return;
- }
- static int start_tx(struct sk_buff *skb, struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- np->cur_tx_copy->skbuff = skb;
- #define one_buffer
- #define BPT 1022
- #if defined(one_buffer)
- np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
- skb->len, PCI_DMA_TODEVICE);
- np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
- np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
- np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */
- // 89/12/29 add,
- if (np->pci_dev->device == 0x891)
- np->cur_tx_copy->control |= ETIControl | RetryTxLC;
- np->cur_tx_copy->status = TXOWN;
- np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
- --np->free_tx_count;
- #elif defined(two_buffer)
- if (skb->len > BPT) {
- struct fealnx_desc *next;
- /* for the first descriptor */
- np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
- BPT, PCI_DMA_TODEVICE);
- np->cur_tx_copy->control = TXIC | TXFD | CRCEnable | PADEnable;
- np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
- np->cur_tx_copy->control |= (BPT << TBSShift); /* buffer size */
- /* for the last descriptor */
- next = (struct fealnx *) np->cur_tx_copy.next_desc_logical;
- next->skbuff = skb;
- next->control = TXIC | TXLD | CRCEnable | PADEnable;
- next->control |= (skb->len << PKTSShift); /* pkt size */
- next->control |= ((skb->len - BPT) << TBSShift); /* buf size */
- // 89/12/29 add,
- if (np->pci_dev->device == 0x891)
- np->cur_tx_copy->control |= ETIControl | RetryTxLC;
- next->buffer = pci_map_single(ep->pci_dev, skb->data + BPT,
- skb->len - BPT, PCI_DMA_TODEVICE);
- next->status = TXOWN;
- np->cur_tx_copy->status = TXOWN;
- np->cur_tx_copy = next->next_desc_logical;
- np->free_tx_count -= 2;
- } else {
- np->cur_tx_copy->buffer = pci_map_single(np->pci_dev, skb->data,
- skb->len, PCI_DMA_TODEVICE);
- np->cur_tx_copy->control = TXIC | TXLD | TXFD | CRCEnable | PADEnable;
- np->cur_tx_copy->control |= (skb->len << PKTSShift); /* pkt size */
- np->cur_tx_copy->control |= (skb->len << TBSShift); /* buffer size */
- // 89/12/29 add,
- if (np->pci_dev->device == 0x891)
- np->cur_tx_copy->control |= ETIControl | RetryTxLC;
- np->cur_tx_copy->status = TXOWN;
- np->cur_tx_copy = np->cur_tx_copy->next_desc_logical;
- --np->free_tx_count;
- }
- #endif
- if (np->free_tx_count < 2)
- netif_stop_queue(dev);
- ++np->really_tx_count;
- writel(0, dev->base_addr + TXPDR);
- dev->trans_start = jiffies;
- return 0;
- }
- void free_one_rx_descriptor(struct netdev_private *np)
- {
- if (np->really_rx_count == RX_RING_SIZE)
- np->cur_rx->status = RXOWN;
- else {
- np->lack_rxbuf->skbuff = np->cur_rx->skbuff;
- np->lack_rxbuf->buffer = np->cur_rx->buffer;
- np->lack_rxbuf->status = RXOWN;
- ++np->really_rx_count;
- np->lack_rxbuf = np->lack_rxbuf->next_desc_logical;
- }
- np->cur_rx = np->cur_rx->next_desc_logical;
- }
- void reset_rx_descriptors(struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- stop_nic_rx(dev->base_addr, np->crvalue);
- while (!(np->cur_rx->status & RXOWN))
- free_one_rx_descriptor(np);
- allocate_rx_buffers(dev);
- writel(np->rx_ring_dma + (np->cur_rx - np->rx_ring),
- dev->base_addr + RXLBA);
- writel(np->crvalue, dev->base_addr + TCRRCR);
- }
- /* The interrupt handler does all of the Rx thread work and cleans up
- after the Tx thread. */
- static void intr_handler(int irq, void *dev_instance, struct pt_regs *rgs)
- {
- struct net_device *dev = (struct net_device *) dev_instance;
- struct netdev_private *np = dev->priv;
- long ioaddr, boguscnt = max_interrupt_work;
- unsigned int num_tx = 0;
- writel(0, dev->base_addr + IMR);
- ioaddr = dev->base_addr;
- np = (struct netdev_private *) dev->priv;
- do {
- u32 intr_status = readl(ioaddr + ISR);
- /* Acknowledge all of the current interrupt sources ASAP. */
- writel(intr_status, ioaddr + ISR);
- if (debug)
- printk(KERN_DEBUG "%s: Interrupt, status %4.4x.n", dev->name,
- intr_status);
- if (!(intr_status & np->imrvalue))
- break;
- // 90/1/16 delete,
- //
- // if (intr_status & FBE)
- // { /* fatal error */
- // stop_nic_tx(ioaddr, 0);
- // stop_nic_rx(ioaddr, 0);
- // break;
- // };
- if (intr_status & TUNF)
- writel(0, ioaddr + TXPDR);
- if (intr_status & CNTOVF) {
- /* missed pkts */
- np->stats.rx_missed_errors += readl(ioaddr + TALLY) & 0x7fff;
- /* crc error */
- np->stats.rx_crc_errors +=
- (readl(ioaddr + TALLY) & 0x7fff0000) >> 16;
- }
- if (intr_status & (RI | RBU)) {
- if (intr_status & RI)
- netdev_rx(dev);
- else
- reset_rx_descriptors(dev);
- }
- while (np->really_tx_count) {
- long tx_status = np->cur_tx->status;
- long tx_control = np->cur_tx->control;
- if (!(tx_control & TXLD)) { /* this pkt is combined by two tx descriptors */
- struct fealnx_desc *next;
- next = np->cur_tx->next_desc_logical;
- tx_status = next->status;
- tx_control = next->control;
- }
- if (tx_status & TXOWN)
- break;
- if (!(np->crvalue & 0x02000000)) {
- if (tx_status & (CSL | LC | EC | UDF | HF)) {
- np->stats.tx_errors++;
- if (tx_status & EC)
- np->stats.tx_aborted_errors++;
- if (tx_status & CSL)
- np->stats.tx_carrier_errors++;
- if (tx_status & LC)
- np->stats.tx_window_errors++;
- if (tx_status & UDF)
- np->stats.tx_fifo_errors++;
- if ((tx_status & HF) && np->mii.full_duplex == 0)
- np->stats.tx_heartbeat_errors++;
- #ifdef ETHER_STATS
- if (tx_status & EC)
- np->stats.collisions16++;
- #endif
- } else {
- #ifdef ETHER_STATS
- if (tx_status & DFR)
- np->stats.tx_deferred++;
- #endif
- np->stats.tx_bytes +=
- ((tx_control & PKTSMask) >> PKTSShift);
- np->stats.collisions +=
- ((tx_status & NCRMask) >> NCRShift);
- np->stats.tx_packets++;
- }
- } else {
- np->stats.tx_bytes +=
- ((tx_control & PKTSMask) >> PKTSShift);
- np->stats.tx_packets++;
- }
- /* Free the original skb. */
- pci_unmap_single(np->pci_dev, np->cur_tx->buffer,
- np->cur_tx->skbuff->len, PCI_DMA_TODEVICE);
- dev_kfree_skb_irq(np->cur_tx->skbuff);
- np->cur_tx->skbuff = NULL;
- --np->really_tx_count;
- if (np->cur_tx->control & TXLD) {
- np->cur_tx = np->cur_tx->next_desc_logical;
- ++np->free_tx_count;
- } else {
- np->cur_tx = np->cur_tx->next_desc_logical;
- np->cur_tx = np->cur_tx->next_desc_logical;
- np->free_tx_count += 2;
- }
- num_tx++;
- } /* end of for loop */
-
- if (num_tx && np->free_tx_count >= 2)
- netif_wake_queue(dev);
- /* read transmit status for enhanced mode only */
- if (np->crvalue & 0x02000000) {
- long data;
- data = readl(ioaddr + TSR);
- np->stats.tx_errors += (data & 0xff000000) >> 24;
- np->stats.tx_aborted_errors += (data & 0xff000000) >> 24;
- np->stats.tx_window_errors += (data & 0x00ff0000) >> 16;
- #ifdef ETHER_STATS
- np->stats.collisions16 += (data & 0xff000000) >> 24;
- #endif
- np->stats.collisions += (data & 0x0000ffff);
- }
- if (--boguscnt < 0) {
- printk(KERN_WARNING "%s: Too much work at interrupt, "
- "status=0x%4.4x.n", dev->name, intr_status);
- break;
- }
- } while (1);
- /* read the tally counters */
- /* missed pkts */
- np->stats.rx_missed_errors += readl(ioaddr + TALLY) & 0x7fff;
- /* crc error */
- np->stats.rx_crc_errors += (readl(ioaddr + TALLY) & 0x7fff0000) >> 16;
- if (debug)
- printk(KERN_DEBUG "%s: exiting interrupt, status=%#4.4x.n",
- dev->name, readl(ioaddr + ISR));
- writel(np->imrvalue, ioaddr + IMR);
- return;
- }
- /* This routine is logically part of the interrupt handler, but seperated
- for clarity and better register allocation. */
- static int netdev_rx(struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- /* If EOP is set on the next entry, it's a new packet. Send it up. */
- while (!(np->cur_rx->status & RXOWN)) {
- s32 rx_status = np->cur_rx->status;
- if (np->really_rx_count == 0)
- break;
- if (debug)
- printk(KERN_DEBUG " netdev_rx() status was %8.8x.n", rx_status);
- if ((!((rx_status & RXFSD) && (rx_status & RXLSD)))
- || (rx_status & ErrorSummary)) {
- if (rx_status & ErrorSummary) { /* there was a fatal error */
- if (debug)
- printk(KERN_DEBUG
- "%s: Receive error, Rx status %8.8x.n",
- dev->name, rx_status);
- np->stats.rx_errors++; /* end of a packet. */
- if (rx_status & (LONG | RUNT))
- np->stats.rx_length_errors++;
- if (rx_status & RXER)
- np->stats.rx_frame_errors++;
- if (rx_status & CRC)
- np->stats.rx_crc_errors++;
- } else {
- int need_to_reset = 0;
- int desno = 0;
- if (rx_status & RXFSD) { /* this pkt is too long, over one rx buffer */
- struct fealnx_desc *cur;
- /* check this packet is received completely? */
- cur = np->cur_rx;
- while (desno <= np->really_rx_count) {
- ++desno;
- if ((!(cur->status & RXOWN))
- && (cur->status & RXLSD))
- break;
- /* goto next rx descriptor */
- cur = cur->next_desc_logical;
- }
- if (desno > np->really_rx_count)
- need_to_reset = 1;
- } else /* RXLSD did not find, something error */
- need_to_reset = 1;
- if (need_to_reset == 0) {
- int i;
- np->stats.rx_length_errors++;
- /* free all rx descriptors related this long pkt */
- for (i = 0; i < desno; ++i)
- free_one_rx_descriptor(np);
- continue;
- } else { /* something error, need to reset this chip */
- reset_rx_descriptors(dev);
- }
- break; /* exit the while loop */
- }
- } else { /* this received pkt is ok */
- struct sk_buff *skb;
- /* Omit the four octet CRC from the length. */
- short pkt_len = ((rx_status & FLNGMASK) >> FLNGShift) - 4;
- #ifndef final_version
- if (debug)
- printk(KERN_DEBUG " netdev_rx() normal Rx pkt length %d"
- " status %x.n", pkt_len, rx_status);
- #endif
- pci_dma_sync_single(np->pci_dev, np->cur_rx->buffer,
- np->rx_buf_sz, PCI_DMA_FROMDEVICE);
- pci_unmap_single(np->pci_dev, np->cur_rx->buffer,
- np->rx_buf_sz, PCI_DMA_FROMDEVICE);
- /* Check if the packet is long enough to accept without copying
- to a minimally-sized skbuff. */
- if (pkt_len < rx_copybreak &&
- (skb = dev_alloc_skb(pkt_len + 2)) != NULL) {
- skb->dev = dev;
- skb_reserve(skb, 2); /* 16 byte align the IP header */
- /* Call copy + cksum if available. */
- #if ! defined(__alpha__)
- eth_copy_and_sum(skb,
- np->cur_rx->skbuff->tail, pkt_len, 0);
- skb_put(skb, pkt_len);
- #else
- memcpy(skb_put(skb, pkt_len),
- np->cur_rx->skbuff->tail, pkt_len);
- #endif
- } else {
- skb_put(skb = np->cur_rx->skbuff, pkt_len);
- np->cur_rx->skbuff = NULL;
- if (np->really_rx_count == RX_RING_SIZE)
- np->lack_rxbuf = np->cur_rx;
- --np->really_rx_count;
- }
- skb->protocol = eth_type_trans(skb, dev);
- netif_rx(skb);
- dev->last_rx = jiffies;
- np->stats.rx_packets++;
- np->stats.rx_bytes += pkt_len;
- }
- if (np->cur_rx->skbuff == NULL) {
- struct sk_buff *skb;
- skb = dev_alloc_skb(np->rx_buf_sz);
- if (skb != NULL) {
- skb->dev = dev; /* Mark as being used by this device. */
- np->cur_rx->buffer = pci_map_single(np->pci_dev, skb->tail,
- np->rx_buf_sz, PCI_DMA_FROMDEVICE);
- np->cur_rx->skbuff = skb;
- ++np->really_rx_count;
- }
- }
- if (np->cur_rx->skbuff != NULL)
- free_one_rx_descriptor(np);
- } /* end of while loop */
- /* allocate skb for rx buffers */
- allocate_rx_buffers(dev);
- return 0;
- }
- static struct net_device_stats *get_stats(struct net_device *dev)
- {
- long ioaddr = dev->base_addr;
- struct netdev_private *np = dev->priv;
- /* The chip only need report frame silently dropped. */
- if (netif_running(dev)) {
- np->stats.rx_missed_errors += readl(ioaddr + TALLY) & 0x7fff;
- np->stats.rx_crc_errors += (readl(ioaddr + TALLY) & 0x7fff0000) >> 16;
- }
- return &np->stats;
- }
- 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 set_rx_mode(struct net_device *dev)
- {
- struct netdev_private *np = dev->priv;
- long ioaddr = dev->base_addr;
- u32 mc_filter[2]; /* Multicast hash filter */
- u32 rx_mode;
- if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */
- /* Unconditionally log net taps. */
- printk(KERN_NOTICE "%s: Promiscuous mode enabled.n", dev->name);
- memset(mc_filter, 0xff, sizeof(mc_filter));
- rx_mode = PROM | AB | AM;
- } else if ((dev->mc_count > multicast_filter_limit)
- || (dev->flags & IFF_ALLMULTI)) {
- /* Too many to match, or accept all multicasts. */
- memset(mc_filter, 0xff, sizeof(mc_filter));
- rx_mode = AB | AM;
- } else {
- struct dev_mc_list *mclist;
- int i;
- memset(mc_filter, 0, sizeof(mc_filter));
- for (i = 0, mclist = dev->mc_list; mclist && i < dev->mc_count;
- i++, mclist = mclist->next) {
- set_bit((ether_crc(ETH_ALEN, mclist->dmi_addr) >> 26) ^ 0x3F,
- mc_filter);
- }
- rx_mode = AB | AM;
- }
- stop_nic_tx(ioaddr, np->crvalue);
- stop_nic_rx(ioaddr, np->crvalue & (~0x40000));
- writel(mc_filter[0], ioaddr + MAR0);
- writel(mc_filter[1], ioaddr + MAR1);
- np->crvalue &= ~RxModeMask;
- np->crvalue |= rx_mode;
- writel(np->crvalue, ioaddr + TCRRCR);
- }
- static int netdev_ethtool_ioctl (struct net_device *dev, void *useraddr)
- {
- struct netdev_private *np = dev->priv;
- u32 ethcmd;
- if (copy_from_user (ðcmd, useraddr, sizeof (ethcmd)))
- 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, np->pci_dev->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(&np->lock);
- mii_ethtool_gset(&np->mii, &ecmd);
- spin_unlock_irq(&np->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(&np->lock);
- r = mii_ethtool_sset(&np->mii, &ecmd);
- spin_unlock_irq(&np->lock);
- return r;
- }
- /* restart autonegotiation */
- case ETHTOOL_NWAY_RST: {
- return mii_nway_restart(&np->mii);
- }
- /* get link status */
- case ETHTOOL_GLINK: {
- struct ethtool_value edata = {ETHTOOL_GLINK};
- edata.data = mii_link_ok(&np->mii);
- 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 = debug;
- 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;
- debug = edata.data;
- return 0;
- }
- default:
- break;
- }
- return -EOPNOTSUPP;
- }
- static int mii_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
- {
- struct mii_ioctl_data *data = (struct mii_ioctl_data *) & rq->ifr_data;
- switch (cmd) {
- case SIOCETHTOOL:
- return netdev_ethtool_ioctl(dev, (void *) rq->ifr_data);
- case SIOCGMIIPHY: /* Get address of MII PHY in use. */
- case SIOCDEVPRIVATE: /* for binary compat, remove in 2.5 */
- data->phy_id = ((struct netdev_private *) dev->priv)->phys[0] & 0x1f;
- /* Fall Through */
- case SIOCGMIIREG: /* Read MII PHY register. */
- case SIOCDEVPRIVATE+1: /* for binary compat, remove in 2.5 */
- data->val_out = mdio_read(dev, data->phy_id & 0x1f, data->reg_num & 0x1f);
- return 0;
- case SIOCSMIIREG: /* Write MII PHY register. */
- case SIOCDEVPRIVATE+2: /* for binary compat, remove in 2.5 */
- if (!capable(CAP_NET_ADMIN))
- return -EPERM;
- mdio_write(dev, data->phy_id & 0x1f, data->reg_num & 0x1f, data->val_in);
- return 0;
- default:
- return -EOPNOTSUPP;
- }
- }
- static int netdev_close(struct net_device *dev)
- {
- long ioaddr = dev->base_addr;
- struct netdev_private *np = dev->priv;
- int i;
- netif_stop_queue(dev);
- /* Disable interrupts by clearing the interrupt mask. */
- writel(0x0000, ioaddr + IMR);
- /* Stop the chip's Tx and Rx processes. */
- stop_nic_tx(ioaddr, 0);
- stop_nic_rx(ioaddr, 0);
- del_timer_sync(&np->timer);
- free_irq(dev->irq, dev);
- /* Free all the skbuffs in the Rx queue. */
- for (i = 0; i < RX_RING_SIZE; i++) {
- struct sk_buff *skb = np->rx_ring[i].skbuff;
- np->rx_ring[i].status = 0;
- if (skb) {
- pci_unmap_single(np->pci_dev, np->rx_ring[i].buffer,
- np->rx_buf_sz, PCI_DMA_FROMDEVICE);
- dev_kfree_skb(skb);
- np->rx_ring[i].skbuff = NULL;
- }
- }
- for (i = 0; i < TX_RING_SIZE; i++) {
- struct sk_buff *skb = np->tx_ring[i].skbuff;
- if (skb) {
- pci_unmap_single(np->pci_dev, np->tx_ring[i].buffer,
- skb->len, PCI_DMA_TODEVICE);
- dev_kfree_skb(skb);
- np->tx_ring[i].skbuff = NULL;
- }
- }
- return 0;
- }
- static struct pci_device_id fealnx_pci_tbl[] __devinitdata = {
- {0x1516, 0x0800, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
- {0x1516, 0x0803, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1},
- {0x1516, 0x0891, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2},
- {} /* terminate list */
- };
- MODULE_DEVICE_TABLE(pci, fealnx_pci_tbl);
- static struct pci_driver fealnx_driver = {
- name: "fealnx",
- id_table: fealnx_pci_tbl,
- probe: fealnx_init_one,
- remove: __devexit_p(fealnx_remove_one),
- };
- static int __init fealnx_init(void)
- {
- /* when a module, this is printed whether or not devices are found in probe */
- #ifdef MODULE
- printk (version);
- #endif
- return pci_module_init(&fealnx_driver);
- }
- static void __exit fealnx_exit(void)
- {
- pci_unregister_driver(&fealnx_driver);
- }
- module_init(fealnx_init);
- module_exit(fealnx_exit);