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drivers/net/epic100.c
45 KB
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/* epic100.c: A SMC 83c170 EPIC/100 Fast Ethernet driver for Linux. */ /* Written/copyright 1997-2001 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. This driver is for the SMC83c170/175 "EPIC" series, as used on the SMC EtherPower II 9432 PCI adapter, and several CardBus cards. The author may be reached as becker@scyld.com, or C/O Scyld Computing Corporation 410 Severn Ave., Suite 210 Annapolis MD 21403 Information and updates available at http://www.scyld.com/network/epic100.html |
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[this link no longer provides anything useful -jgarzik] |
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--------------------------------------------------------------------- |
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*/ #define DRV_NAME "epic100" |
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#define DRV_VERSION "2.1" #define DRV_RELDATE "Sept 11, 2006" |
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/* The user-configurable values. These may be modified when a driver module is loaded.*/ static int debug = 1; /* 1 normal messages, 0 quiet .. 7 verbose. */ /* Used to pass the full-duplex flag, etc. */ #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}; /* Set the copy breakpoint for the copy-only-tiny-frames scheme. Setting to > 1518 effectively disables this feature. */ static int rx_copybreak; /* Operational parameters that are set at compile time. */ /* Keep the ring sizes a power of two for operational 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. */ #define TX_RING_SIZE 256 #define TX_QUEUE_LEN 240 /* Limit ring entries actually used. */ #define RX_RING_SIZE 256 #define TX_TOTAL_SIZE TX_RING_SIZE*sizeof(struct epic_tx_desc) #define RX_TOTAL_SIZE RX_RING_SIZE*sizeof(struct epic_rx_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.*/ /* Bytes transferred to chip before transmission starts. */ /* Initial threshold, increased on underflow, rounded down to 4 byte units. */ #define TX_FIFO_THRESH 256 #define RX_FIFO_THRESH 1 /* 0-3, 0==32, 64,96, or 3==128 bytes */ |
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#include <linux/module.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/timer.h> #include <linux/errno.h> #include <linux/ioport.h> |
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#include <linux/interrupt.h> #include <linux/pci.h> #include <linux/delay.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/skbuff.h> #include <linux/init.h> #include <linux/spinlock.h> #include <linux/ethtool.h> #include <linux/mii.h> #include <linux/crc32.h> #include <linux/bitops.h> #include <asm/io.h> #include <asm/uaccess.h> |
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#include <asm/byteorder.h> |
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/* These identify the driver base version and may not be removed. */ static char version[] __devinitdata = DRV_NAME ".c:v1.11 1/7/2001 Written by Donald Becker <becker@scyld.com> "; static char version2[] __devinitdata = |
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" (unofficial 2.4.x kernel port, version " DRV_VERSION ", " DRV_RELDATE ") "; MODULE_AUTHOR("Donald Becker <becker@scyld.com>"); MODULE_DESCRIPTION("SMC 83c170 EPIC series Ethernet driver"); MODULE_LICENSE("GPL"); module_param(debug, int, 0); module_param(rx_copybreak, int, 0); module_param_array(options, int, NULL, 0); module_param_array(full_duplex, int, NULL, 0); MODULE_PARM_DESC(debug, "EPIC/100 debug level (0-5)"); MODULE_PARM_DESC(options, "EPIC/100: Bits 0-3: media type, bit 4: full duplex"); MODULE_PARM_DESC(rx_copybreak, "EPIC/100 copy breakpoint for copy-only-tiny-frames"); MODULE_PARM_DESC(full_duplex, "EPIC/100 full duplex setting(s) (1)"); /* Theory of Operation I. Board Compatibility This device driver is designed for the SMC "EPIC/100", the SMC single-chip Ethernet controllers for PCI. This chip is used on the SMC EtherPower II boards. II. Board-specific settings PCI bus devices are configured by the system at boot time, so no jumpers need to be set on the board. The system BIOS will assign the PCI INTA signal to a (preferably otherwise unused) system IRQ line. Note: Kernel versions earlier than 1.3.73 do not support shared PCI interrupt lines. III. Driver operation IIIa. Ring buffers IVb. References |
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http://www.smsc.com/media/Downloads_Public/discontinued/83c171.pdf http://www.smsc.com/media/Downloads_Public/discontinued/83c175.pdf |
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http://scyld.com/expert/NWay.html http://www.national.com/pf/DP/DP83840A.html IVc. Errata */ |
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enum chip_capability_flags { MII_PWRDWN=1, TYPE2_INTR=2, NO_MII=4 }; #define EPIC_TOTAL_SIZE 0x100 #define USE_IO_OPS 1 |
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typedef enum { SMSC_83C170_0, SMSC_83C170, SMSC_83C175, } chip_t; struct epic_chip_info { const char *name; |
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int drv_flags; /* Driver use, intended as capability flags. */ }; /* indexed by chip_t */ |
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static const struct epic_chip_info pci_id_tbl[] = { |
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{ "SMSC EPIC/100 83c170", TYPE2_INTR | NO_MII | MII_PWRDWN }, { "SMSC EPIC/100 83c170", TYPE2_INTR }, { "SMSC EPIC/C 83c175", TYPE2_INTR | MII_PWRDWN }, |
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}; |
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static DEFINE_PCI_DEVICE_TABLE(epic_pci_tbl) = { |
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{ 0x10B8, 0x0005, 0x1092, 0x0AB4, 0, 0, SMSC_83C170_0 }, { 0x10B8, 0x0005, PCI_ANY_ID, PCI_ANY_ID, 0, 0, SMSC_83C170 }, { 0x10B8, 0x0006, PCI_ANY_ID, PCI_ANY_ID, PCI_CLASS_NETWORK_ETHERNET << 8, 0xffff00, SMSC_83C175 }, { 0,} }; MODULE_DEVICE_TABLE (pci, epic_pci_tbl); |
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#ifndef USE_IO_OPS #undef inb #undef inw #undef inl #undef outb #undef outw #undef outl #define inb readb #define inw readw #define inl readl #define outb writeb #define outw writew #define outl writel #endif /* Offsets to registers, using the (ugh) SMC names. */ enum epic_registers { COMMAND=0, INTSTAT=4, INTMASK=8, GENCTL=0x0C, NVCTL=0x10, EECTL=0x14, PCIBurstCnt=0x18, TEST1=0x1C, CRCCNT=0x20, ALICNT=0x24, MPCNT=0x28, /* Rx error counters. */ MIICtrl=0x30, MIIData=0x34, MIICfg=0x38, LAN0=64, /* MAC address. */ MC0=80, /* Multicast filter table. */ RxCtrl=96, TxCtrl=112, TxSTAT=0x74, PRxCDAR=0x84, RxSTAT=0xA4, EarlyRx=0xB0, PTxCDAR=0xC4, TxThresh=0xDC, }; /* Interrupt register bits, using my own meaningful names. */ enum IntrStatus { TxIdle=0x40000, RxIdle=0x20000, IntrSummary=0x010000, PCIBusErr170=0x7000, PCIBusErr175=0x1000, PhyEvent175=0x8000, RxStarted=0x0800, RxEarlyWarn=0x0400, CntFull=0x0200, TxUnderrun=0x0100, TxEmpty=0x0080, TxDone=0x0020, RxError=0x0010, RxOverflow=0x0008, RxFull=0x0004, RxHeader=0x0002, RxDone=0x0001, }; enum CommandBits { StopRx=1, StartRx=2, TxQueued=4, RxQueued=8, StopTxDMA=0x20, StopRxDMA=0x40, RestartTx=0x80, }; #define EpicRemoved 0xffffffff /* Chip failed or removed (CardBus) */ #define EpicNapiEvent (TxEmpty | TxDone | \ RxDone | RxStarted | RxEarlyWarn | RxOverflow | RxFull) #define EpicNormalEvent (0x0000ffff & ~EpicNapiEvent) |
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static const u16 media2miictl[16] = { |
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0, 0x0C00, 0x0C00, 0x2000, 0x0100, 0x2100, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }; |
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/* * The EPIC100 Rx and Tx buffer descriptors. Note that these * really ARE host-endian; it's not a misannotation. We tell * the card to byteswap them internally on big-endian hosts - |
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* look for #ifdef __BIG_ENDIAN in epic_open(). |
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*/ |
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struct epic_tx_desc { u32 txstatus; u32 bufaddr; u32 buflength; u32 next; }; struct epic_rx_desc { u32 rxstatus; u32 bufaddr; u32 buflength; u32 next; }; enum desc_status_bits { DescOwn=0x8000, }; #define PRIV_ALIGN 15 /* Required alignment mask */ struct epic_private { struct epic_rx_desc *rx_ring; struct epic_tx_desc *tx_ring; /* The saved address of a sent-in-place packet/buffer, for skfree(). */ struct sk_buff* tx_skbuff[TX_RING_SIZE]; /* The addresses of receive-in-place skbuffs. */ struct sk_buff* rx_skbuff[RX_RING_SIZE]; dma_addr_t tx_ring_dma; dma_addr_t rx_ring_dma; /* Ring pointers. */ spinlock_t lock; /* Group with Tx control cache line. */ spinlock_t napi_lock; |
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struct napi_struct napi; |
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unsigned int reschedule_in_poll; unsigned int cur_tx, dirty_tx; unsigned int cur_rx, dirty_rx; u32 irq_mask; unsigned int rx_buf_sz; /* Based on MTU+slack. */ struct pci_dev *pci_dev; /* PCI bus location. */ int chip_id, chip_flags; |
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struct timer_list timer; /* Media selection timer. */ int tx_threshold; unsigned char mc_filter[8]; signed char phys[4]; /* MII device addresses. */ u16 advertising; /* NWay media advertisement */ int mii_phy_cnt; struct mii_if_info mii; unsigned int tx_full:1; /* The Tx queue is full. */ unsigned int default_port:4; /* Last dev->if_port value. */ }; static int epic_open(struct net_device *dev); static int read_eeprom(long ioaddr, int location); 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 loc, int val); static void epic_restart(struct net_device *dev); static void epic_timer(unsigned long data); static void epic_tx_timeout(struct net_device *dev); static void epic_init_ring(struct net_device *dev); |
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static netdev_tx_t epic_start_xmit(struct sk_buff *skb, struct net_device *dev); |
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static int epic_rx(struct net_device *dev, int budget); |
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static int epic_poll(struct napi_struct *napi, int budget); |
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static irqreturn_t epic_interrupt(int irq, void *dev_instance); |
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static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
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static const struct ethtool_ops netdev_ethtool_ops; |
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static int epic_close(struct net_device *dev); static struct net_device_stats *epic_get_stats(struct net_device *dev); static void set_rx_mode(struct net_device *dev); |
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static const struct net_device_ops epic_netdev_ops = { .ndo_open = epic_open, .ndo_stop = epic_close, .ndo_start_xmit = epic_start_xmit, .ndo_tx_timeout = epic_tx_timeout, .ndo_get_stats = epic_get_stats, .ndo_set_multicast_list = set_rx_mode, .ndo_do_ioctl = netdev_ioctl, .ndo_change_mtu = eth_change_mtu, .ndo_set_mac_address = eth_mac_addr, .ndo_validate_addr = eth_validate_addr, }; |
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static int __devinit epic_init_one (struct pci_dev *pdev, const struct pci_device_id *ent) { static int card_idx = -1; long ioaddr; int chip_idx = (int) ent->driver_data; int irq; struct net_device *dev; struct epic_private *ep; int i, ret, option = 0, duplex = 0; 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++) |
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printk(KERN_INFO "%s%s", version, version2); |
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#endif |
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card_idx++; |
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ret = pci_enable_device(pdev); if (ret) goto out; irq = pdev->irq; |
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if (pci_resource_len(pdev, 0) < EPIC_TOTAL_SIZE) { |
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dev_err(&pdev->dev, "no PCI region space "); |
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ret = -ENODEV; goto err_out_disable; } |
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pci_set_master(pdev); ret = pci_request_regions(pdev, DRV_NAME); if (ret < 0) goto err_out_disable; ret = -ENOMEM; dev = alloc_etherdev(sizeof (*ep)); if (!dev) { |
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dev_err(&pdev->dev, "no memory for eth device "); |
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goto err_out_free_res; } |
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SET_NETDEV_DEV(dev, &pdev->dev); #ifdef USE_IO_OPS ioaddr = pci_resource_start (pdev, 0); #else ioaddr = pci_resource_start (pdev, 1); |
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ioaddr = (long) pci_ioremap_bar(pdev, 1); |
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if (!ioaddr) { |
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dev_err(&pdev->dev, "ioremap failed "); |
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goto err_out_free_netdev; } #endif pci_set_drvdata(pdev, dev); |
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ep = netdev_priv(dev); |
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ep->mii.dev = dev; ep->mii.mdio_read = mdio_read; ep->mii.mdio_write = mdio_write; ep->mii.phy_id_mask = 0x1f; ep->mii.reg_num_mask = 0x1f; ring_space = pci_alloc_consistent(pdev, TX_TOTAL_SIZE, &ring_dma); if (!ring_space) goto err_out_iounmap; |
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ep->tx_ring = ring_space; |
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ep->tx_ring_dma = ring_dma; ring_space = pci_alloc_consistent(pdev, RX_TOTAL_SIZE, &ring_dma); if (!ring_space) goto err_out_unmap_tx; |
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ep->rx_ring = ring_space; |
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ep->rx_ring_dma = ring_dma; if (dev->mem_start) { option = dev->mem_start; duplex = (dev->mem_start & 16) ? 1 : 0; } else if (card_idx >= 0 && card_idx < MAX_UNITS) { if (options[card_idx] >= 0) option = options[card_idx]; if (full_duplex[card_idx] >= 0) duplex = full_duplex[card_idx]; } dev->base_addr = ioaddr; dev->irq = irq; spin_lock_init(&ep->lock); spin_lock_init(&ep->napi_lock); ep->reschedule_in_poll = 0; /* Bring the chip out of low-power mode. */ outl(0x4200, ioaddr + GENCTL); /* Magic?! If we don't set this bit the MII interface won't work. */ /* This magic is documented in SMSC app note 7.15 */ for (i = 16; i > 0; i--) outl(0x0008, ioaddr + TEST1); /* Turn on the MII transceiver. */ outl(0x12, ioaddr + MIICfg); if (chip_idx == 1) outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); outl(0x0200, ioaddr + GENCTL); /* Note: the '175 does not have a serial EEPROM. */ for (i = 0; i < 3; i++) |
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((__le16 *)dev->dev_addr)[i] = cpu_to_le16(inw(ioaddr + LAN0 + i*4)); |
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if (debug > 2) { |
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dev_printk(KERN_DEBUG, &pdev->dev, "EEPROM contents: "); |
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for (i = 0; i < 64; i++) printk(" %4.4x%s", read_eeprom(ioaddr, i), i % 16 == 15 ? " " : ""); } ep->pci_dev = pdev; ep->chip_id = chip_idx; ep->chip_flags = pci_id_tbl[chip_idx].drv_flags; |
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ep->irq_mask = |
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(ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170) | CntFull | TxUnderrun | EpicNapiEvent; /* Find the connected MII xcvrs. Doing this in open() would allow detecting external xcvrs later, but takes much time and no cards have external MII. */ { int phy, phy_idx = 0; for (phy = 1; phy < 32 && phy_idx < sizeof(ep->phys); phy++) { int mii_status = mdio_read(dev, phy, MII_BMSR); if (mii_status != 0xffff && mii_status != 0x0000) { ep->phys[phy_idx++] = phy; |
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dev_info(&pdev->dev, |
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"MII transceiver #%d control " "%4.4x status %4.4x. ", phy, mdio_read(dev, phy, 0), mii_status); |
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} } ep->mii_phy_cnt = phy_idx; if (phy_idx != 0) { phy = ep->phys[0]; ep->mii.advertising = mdio_read(dev, phy, MII_ADVERTISE); |
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dev_info(&pdev->dev, |
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"Autonegotiation advertising %4.4x link " |
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"partner %4.4x. ", |
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ep->mii.advertising, mdio_read(dev, phy, 5)); |
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} else if ( ! (ep->chip_flags & NO_MII)) { |
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dev_warn(&pdev->dev, |
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"***WARNING***: No MII transceiver found! "); |
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/* Use the known PHY address of the EPII. */ ep->phys[0] = 3; } ep->mii.phy_id = ep->phys[0]; } /* Turn off the MII xcvr (175 only!), leave the chip in low-power mode. */ if (ep->chip_flags & MII_PWRDWN) outl(inl(ioaddr + NVCTL) & ~0x483C, ioaddr + NVCTL); outl(0x0008, ioaddr + GENCTL); /* The lower four bits are the media type. */ if (duplex) { ep->mii.force_media = ep->mii.full_duplex = 1; |
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dev_info(&pdev->dev, "Forced full duplex requested. "); |
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} dev->if_port = ep->default_port = option; /* The Epic-specific entries in the device structure. */ |
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dev->netdev_ops = &epic_netdev_ops; |
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dev->ethtool_ops = &netdev_ethtool_ops; dev->watchdog_timeo = TX_TIMEOUT; |
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netif_napi_add(dev, &ep->napi, epic_poll, 64); |
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ret = register_netdev(dev); if (ret < 0) goto err_out_unmap_rx; |
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printk(KERN_INFO "%s: %s at %#lx, IRQ %d, %pM ", |
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dev->name, pci_id_tbl[chip_idx].name, ioaddr, dev->irq, |
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dev->dev_addr); |
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out: return ret; err_out_unmap_rx: pci_free_consistent(pdev, RX_TOTAL_SIZE, ep->rx_ring, ep->rx_ring_dma); err_out_unmap_tx: pci_free_consistent(pdev, TX_TOTAL_SIZE, ep->tx_ring, ep->tx_ring_dma); err_out_iounmap: #ifndef USE_IO_OPS iounmap(ioaddr); err_out_free_netdev: #endif free_netdev(dev); err_out_free_res: pci_release_regions(pdev); err_out_disable: pci_disable_device(pdev); goto out; } |
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|
1da177e4c Linux-2.6.12-rc2 |
528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 |
/* Serial EEPROM section. */ /* EEPROM_Ctrl bits. */ #define EE_SHIFT_CLK 0x04 /* EEPROM shift clock. */ #define EE_CS 0x02 /* EEPROM chip select. */ #define EE_DATA_WRITE 0x08 /* EEPROM chip data in. */ #define EE_WRITE_0 0x01 #define EE_WRITE_1 0x09 #define EE_DATA_READ 0x10 /* EEPROM chip data out. */ #define EE_ENB (0x0001 | EE_CS) /* Delay between EEPROM clock transitions. This serves to flush the operation to the PCI bus. */ #define eeprom_delay() inl(ee_addr) /* The EEPROM commands include the alway-set leading bit. */ #define EE_WRITE_CMD (5 << 6) #define EE_READ64_CMD (6 << 6) #define EE_READ256_CMD (6 << 8) #define EE_ERASE_CMD (7 << 6) static void epic_disable_int(struct net_device *dev, struct epic_private *ep) { long ioaddr = dev->base_addr; outl(0x00000000, ioaddr + INTMASK); } static inline void __epic_pci_commit(long ioaddr) { #ifndef USE_IO_OPS inl(ioaddr + INTMASK); #endif } static inline void epic_napi_irq_off(struct net_device *dev, struct epic_private *ep) { long ioaddr = dev->base_addr; outl(ep->irq_mask & ~EpicNapiEvent, ioaddr + INTMASK); __epic_pci_commit(ioaddr); } static inline void epic_napi_irq_on(struct net_device *dev, struct epic_private *ep) { long ioaddr = dev->base_addr; /* No need to commit possible posted write */ outl(ep->irq_mask | EpicNapiEvent, ioaddr + INTMASK); } static int __devinit read_eeprom(long ioaddr, int location) { int i; int retval = 0; long ee_addr = ioaddr + EECTL; int read_cmd = location | (inl(ee_addr) & 0x40 ? EE_READ64_CMD : EE_READ256_CMD); outl(EE_ENB & ~EE_CS, ee_addr); outl(EE_ENB, ee_addr); /* Shift the read command bits out. */ for (i = 12; i >= 0; i--) { short dataval = (read_cmd & (1 << i)) ? EE_WRITE_1 : EE_WRITE_0; outl(EE_ENB | dataval, ee_addr); eeprom_delay(); outl(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr); eeprom_delay(); } outl(EE_ENB, ee_addr); for (i = 16; i > 0; i--) { outl(EE_ENB | EE_SHIFT_CLK, ee_addr); eeprom_delay(); retval = (retval << 1) | ((inl(ee_addr) & EE_DATA_READ) ? 1 : 0); outl(EE_ENB, ee_addr); eeprom_delay(); } /* Terminate the EEPROM access. */ outl(EE_ENB & ~EE_CS, ee_addr); return retval; } #define MII_READOP 1 #define MII_WRITEOP 2 static int mdio_read(struct net_device *dev, int phy_id, int location) { long ioaddr = dev->base_addr; int read_cmd = (phy_id << 9) | (location << 4) | MII_READOP; int i; outl(read_cmd, ioaddr + MIICtrl); /* Typical operation takes 25 loops. */ for (i = 400; i > 0; i--) { barrier(); if ((inl(ioaddr + MIICtrl) & MII_READOP) == 0) { /* Work around read failure bug. */ |
8e95a2026 drivers/net: Move... |
631 632 |
if (phy_id == 1 && location < 6 && inw(ioaddr + MIIData) == 0xffff) { |
1da177e4c Linux-2.6.12-rc2 |
633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 |
outl(read_cmd, ioaddr + MIICtrl); continue; } return inw(ioaddr + MIIData); } } return 0xffff; } static void mdio_write(struct net_device *dev, int phy_id, int loc, int value) { long ioaddr = dev->base_addr; int i; outw(value, ioaddr + MIIData); outl((phy_id << 9) | (loc << 4) | MII_WRITEOP, ioaddr + MIICtrl); |
f3b197ac2 [netdrvr] trim tr... |
649 |
for (i = 10000; i > 0; i--) { |
1da177e4c Linux-2.6.12-rc2 |
650 651 652 653 |
barrier(); if ((inl(ioaddr + MIICtrl) & MII_WRITEOP) == 0) break; } |
1da177e4c Linux-2.6.12-rc2 |
654 |
} |
f3b197ac2 [netdrvr] trim tr... |
655 |
|
1da177e4c Linux-2.6.12-rc2 |
656 657 |
static int epic_open(struct net_device *dev) { |
4cf1653aa netdevice: safe c... |
658 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
659 660 661 662 663 664 |
long ioaddr = dev->base_addr; int i; int retval; /* Soft reset the chip. */ outl(0x4001, ioaddr + GENCTL); |
bea3348ee [NET]: Make NAPI ... |
665 |
napi_enable(&ep->napi); |
a0607fd3a drivers/net: requ... |
666 |
if ((retval = request_irq(dev->irq, epic_interrupt, IRQF_SHARED, dev->name, dev))) { |
bea3348ee [NET]: Make NAPI ... |
667 |
napi_disable(&ep->napi); |
1da177e4c Linux-2.6.12-rc2 |
668 |
return retval; |
bea3348ee [NET]: Make NAPI ... |
669 |
} |
1da177e4c Linux-2.6.12-rc2 |
670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 |
epic_init_ring(dev); outl(0x4000, ioaddr + GENCTL); /* This magic is documented in SMSC app note 7.15 */ for (i = 16; i > 0; i--) outl(0x0008, ioaddr + TEST1); /* Pull the chip out of low-power mode, enable interrupts, and set for PCI read multiple. The MIIcfg setting and strange write order are required by the details of which bits are reset and the transceiver wiring on the Ositech CardBus card. */ #if 0 outl(dev->if_port == 1 ? 0x13 : 0x12, ioaddr + MIICfg); #endif if (ep->chip_flags & MII_PWRDWN) outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); |
9ebfd4929 epic100 endiannes... |
688 |
/* Tell the chip to byteswap descriptors on big-endian hosts */ |
9e2d11b92 epic100: Test __B... |
689 |
#ifdef __BIG_ENDIAN |
1da177e4c Linux-2.6.12-rc2 |
690 691 692 693 694 695 696 697 698 699 |
outl(0x4432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); inl(ioaddr + GENCTL); outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); #else outl(0x4412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); inl(ioaddr + GENCTL); outl(0x0412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); #endif udelay(20); /* Looks like EPII needs that if you want reliable RX init. FIXME: pci posting bug? */ |
f3b197ac2 [netdrvr] trim tr... |
700 |
|
1da177e4c Linux-2.6.12-rc2 |
701 |
for (i = 0; i < 3; i++) |
9ebfd4929 epic100 endiannes... |
702 |
outl(le16_to_cpu(((__le16*)dev->dev_addr)[i]), ioaddr + LAN0 + i*4); |
1da177e4c Linux-2.6.12-rc2 |
703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 |
ep->tx_threshold = TX_FIFO_THRESH; outl(ep->tx_threshold, ioaddr + TxThresh); if (media2miictl[dev->if_port & 15]) { if (ep->mii_phy_cnt) mdio_write(dev, ep->phys[0], MII_BMCR, media2miictl[dev->if_port&15]); if (dev->if_port == 1) { if (debug > 1) printk(KERN_INFO "%s: Using the 10base2 transceiver, MII " "status %4.4x. ", dev->name, mdio_read(dev, ep->phys[0], MII_BMSR)); } } else { int mii_lpa = mdio_read(dev, ep->phys[0], MII_LPA); if (mii_lpa != 0xffff) { if ((mii_lpa & LPA_100FULL) || (mii_lpa & 0x01C0) == LPA_10FULL) ep->mii.full_duplex = 1; else if (! (mii_lpa & LPA_LPACK)) mdio_write(dev, ep->phys[0], MII_BMCR, BMCR_ANENABLE|BMCR_ANRESTART); if (debug > 1) printk(KERN_INFO "%s: Setting %s-duplex based on MII xcvr %d" " register read of %4.4x. ", dev->name, ep->mii.full_duplex ? "full" : "half", ep->phys[0], mii_lpa); } } outl(ep->mii.full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); outl(ep->rx_ring_dma, ioaddr + PRxCDAR); outl(ep->tx_ring_dma, ioaddr + PTxCDAR); /* Start the chip's Rx process. */ set_rx_mode(dev); outl(StartRx | RxQueued, ioaddr + COMMAND); netif_start_queue(dev); /* Enable interrupts by setting the interrupt mask. */ outl((ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170) |
f3b197ac2 [netdrvr] trim tr... |
745 |
| CntFull | TxUnderrun |
1da177e4c Linux-2.6.12-rc2 |
746 747 748 749 750 751 752 753 754 755 756 757 758 759 |
| RxError | RxHeader | EpicNapiEvent, ioaddr + INTMASK); if (debug > 1) printk(KERN_DEBUG "%s: epic_open() ioaddr %lx IRQ %d status %4.4x " "%s-duplex. ", dev->name, ioaddr, dev->irq, (int)inl(ioaddr + GENCTL), ep->mii.full_duplex ? "full" : "half"); /* Set the timer to switch to check for link beat and perhaps switch to an alternate media type. */ init_timer(&ep->timer); ep->timer.expires = jiffies + 3*HZ; ep->timer.data = (unsigned long)dev; |
c061b18df drivers/net: Remo... |
760 |
ep->timer.function = epic_timer; /* timer handler */ |
1da177e4c Linux-2.6.12-rc2 |
761 762 763 764 765 766 767 768 769 770 |
add_timer(&ep->timer); return 0; } /* Reset the chip to recover from a PCI transaction error. This may occur at interrupt time. */ static void epic_pause(struct net_device *dev) { long ioaddr = dev->base_addr; |
1da177e4c Linux-2.6.12-rc2 |
771 772 |
netif_stop_queue (dev); |
f3b197ac2 [netdrvr] trim tr... |
773 |
|
1da177e4c Linux-2.6.12-rc2 |
774 775 776 777 778 779 780 |
/* Disable interrupts by clearing the interrupt mask. */ outl(0x00000000, ioaddr + INTMASK); /* Stop the chip's Tx and Rx DMA processes. */ outw(StopRx | StopTxDMA | StopRxDMA, ioaddr + COMMAND); /* Update the error counts. */ if (inw(ioaddr + COMMAND) != 0xffff) { |
275defc95 epic100: Use the ... |
781 782 783 |
dev->stats.rx_missed_errors += inb(ioaddr + MPCNT); dev->stats.rx_frame_errors += inb(ioaddr + ALICNT); dev->stats.rx_crc_errors += inb(ioaddr + CRCCNT); |
1da177e4c Linux-2.6.12-rc2 |
784 785 786 787 788 789 790 791 792 |
} /* Remove the packets on the Rx queue. */ epic_rx(dev, RX_RING_SIZE); } static void epic_restart(struct net_device *dev) { long ioaddr = dev->base_addr; |
4cf1653aa netdevice: safe c... |
793 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
794 795 796 797 798 799 800 801 802 803 804 805 806 |
int i; /* Soft reset the chip. */ outl(0x4001, ioaddr + GENCTL); printk(KERN_DEBUG "%s: Restarting the EPIC chip, Rx %d/%d Tx %d/%d. ", dev->name, ep->cur_rx, ep->dirty_rx, ep->dirty_tx, ep->cur_tx); udelay(1); /* This magic is documented in SMSC app note 7.15 */ for (i = 16; i > 0; i--) outl(0x0008, ioaddr + TEST1); |
9e2d11b92 epic100: Test __B... |
807 |
#ifdef __BIG_ENDIAN |
1da177e4c Linux-2.6.12-rc2 |
808 809 810 811 812 813 814 815 816 |
outl(0x0432 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); #else outl(0x0412 | (RX_FIFO_THRESH<<8), ioaddr + GENCTL); #endif outl(dev->if_port == 1 ? 0x13 : 0x12, ioaddr + MIICfg); if (ep->chip_flags & MII_PWRDWN) outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); for (i = 0; i < 3; i++) |
9ebfd4929 epic100 endiannes... |
817 |
outl(le16_to_cpu(((__le16*)dev->dev_addr)[i]), ioaddr + LAN0 + i*4); |
1da177e4c Linux-2.6.12-rc2 |
818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 |
ep->tx_threshold = TX_FIFO_THRESH; outl(ep->tx_threshold, ioaddr + TxThresh); outl(ep->mii.full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); outl(ep->rx_ring_dma + (ep->cur_rx%RX_RING_SIZE)* sizeof(struct epic_rx_desc), ioaddr + PRxCDAR); outl(ep->tx_ring_dma + (ep->dirty_tx%TX_RING_SIZE)* sizeof(struct epic_tx_desc), ioaddr + PTxCDAR); /* Start the chip's Rx process. */ set_rx_mode(dev); outl(StartRx | RxQueued, ioaddr + COMMAND); /* Enable interrupts by setting the interrupt mask. */ outl((ep->chip_flags & TYPE2_INTR ? PCIBusErr175 : PCIBusErr170) | CntFull | TxUnderrun | RxError | RxHeader | EpicNapiEvent, ioaddr + INTMASK); printk(KERN_DEBUG "%s: epic_restart() done, cmd status %4.4x, ctl %4.4x" " interrupt %4.4x. ", dev->name, (int)inl(ioaddr + COMMAND), (int)inl(ioaddr + GENCTL), (int)inl(ioaddr + INTSTAT)); |
1da177e4c Linux-2.6.12-rc2 |
841 842 843 844 |
} static void check_media(struct net_device *dev) { |
4cf1653aa netdevice: safe c... |
845 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 |
long ioaddr = dev->base_addr; int mii_lpa = ep->mii_phy_cnt ? mdio_read(dev, ep->phys[0], MII_LPA) : 0; int negotiated = mii_lpa & ep->mii.advertising; int duplex = (negotiated & 0x0100) || (negotiated & 0x01C0) == 0x0040; if (ep->mii.force_media) return; if (mii_lpa == 0xffff) /* Bogus read */ return; if (ep->mii.full_duplex != duplex) { ep->mii.full_duplex = duplex; printk(KERN_INFO "%s: Setting %s-duplex based on MII #%d link" " partner capability of %4.4x. ", dev->name, ep->mii.full_duplex ? "full" : "half", ep->phys[0], mii_lpa); outl(ep->mii.full_duplex ? 0x7F : 0x79, ioaddr + TxCtrl); } } static void epic_timer(unsigned long data) { struct net_device *dev = (struct net_device *)data; |
4cf1653aa netdevice: safe c... |
868 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 |
long ioaddr = dev->base_addr; int next_tick = 5*HZ; if (debug > 3) { printk(KERN_DEBUG "%s: Media monitor tick, Tx status %8.8x. ", dev->name, (int)inl(ioaddr + TxSTAT)); printk(KERN_DEBUG "%s: Other registers are IntMask %4.4x " "IntStatus %4.4x RxStatus %4.4x. ", dev->name, (int)inl(ioaddr + INTMASK), (int)inl(ioaddr + INTSTAT), (int)inl(ioaddr + RxSTAT)); } check_media(dev); ep->timer.expires = jiffies + next_tick; add_timer(&ep->timer); } static void epic_tx_timeout(struct net_device *dev) { |
4cf1653aa netdevice: safe c... |
891 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
892 893 894 895 896 897 898 899 900 901 902 903 904 905 |
long ioaddr = dev->base_addr; if (debug > 0) { printk(KERN_WARNING "%s: Transmit timeout using MII device, " "Tx status %4.4x. ", dev->name, (int)inw(ioaddr + TxSTAT)); if (debug > 1) { printk(KERN_DEBUG "%s: Tx indices: dirty_tx %d, cur_tx %d. ", dev->name, ep->dirty_tx, ep->cur_tx); } } if (inw(ioaddr + TxSTAT) & 0x10) { /* Tx FIFO underflow. */ |
275defc95 epic100: Use the ... |
906 |
dev->stats.tx_fifo_errors++; |
1da177e4c Linux-2.6.12-rc2 |
907 908 909 910 911 |
outl(RestartTx, ioaddr + COMMAND); } else { epic_restart(dev); outl(TxQueued, dev->base_addr + COMMAND); } |
1ae5dc342 net: trans_start ... |
912 |
dev->trans_start = jiffies; /* prevent tx timeout */ |
275defc95 epic100: Use the ... |
913 |
dev->stats.tx_errors++; |
1da177e4c Linux-2.6.12-rc2 |
914 915 916 917 918 919 920 |
if (!ep->tx_full) netif_wake_queue(dev); } /* Initialize the Rx and Tx rings, along with various 'dev' bits. */ static void epic_init_ring(struct net_device *dev) { |
4cf1653aa netdevice: safe c... |
921 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
922 923 924 925 926 927 928 929 930 931 |
int i; ep->tx_full = 0; ep->dirty_tx = ep->cur_tx = 0; ep->cur_rx = ep->dirty_rx = 0; ep->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32); /* Initialize all Rx descriptors. */ for (i = 0; i < RX_RING_SIZE; i++) { ep->rx_ring[i].rxstatus = 0; |
9ebfd4929 epic100 endiannes... |
932 |
ep->rx_ring[i].buflength = ep->rx_buf_sz; |
f3b197ac2 [netdrvr] trim tr... |
933 |
ep->rx_ring[i].next = ep->rx_ring_dma + |
1da177e4c Linux-2.6.12-rc2 |
934 935 936 937 938 939 940 941 |
(i+1)*sizeof(struct epic_rx_desc); ep->rx_skbuff[i] = NULL; } /* Mark the last entry as wrapping the ring. */ ep->rx_ring[i-1].next = ep->rx_ring_dma; /* Fill in the Rx buffers. Handle allocation failure gracefully. */ for (i = 0; i < RX_RING_SIZE; i++) { |
7a36df8a8 epic100: hamachi:... |
942 |
struct sk_buff *skb = dev_alloc_skb(ep->rx_buf_sz + 2); |
1da177e4c Linux-2.6.12-rc2 |
943 944 945 |
ep->rx_skbuff[i] = skb; if (skb == NULL) break; |
1da177e4c Linux-2.6.12-rc2 |
946 |
skb_reserve(skb, 2); /* 16 byte align the IP header. */ |
f3b197ac2 [netdrvr] trim tr... |
947 |
ep->rx_ring[i].bufaddr = pci_map_single(ep->pci_dev, |
689be4394 [NET]: Remove gra... |
948 |
skb->data, ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
9ebfd4929 epic100 endiannes... |
949 |
ep->rx_ring[i].rxstatus = DescOwn; |
1da177e4c Linux-2.6.12-rc2 |
950 951 952 953 954 955 956 957 |
} ep->dirty_rx = (unsigned int)(i - RX_RING_SIZE); /* The Tx buffer descriptor is filled in as needed, but we do need to clear the ownership bit. */ for (i = 0; i < TX_RING_SIZE; i++) { ep->tx_skbuff[i] = NULL; ep->tx_ring[i].txstatus = 0x0000; |
f3b197ac2 [netdrvr] trim tr... |
958 |
ep->tx_ring[i].next = ep->tx_ring_dma + |
1da177e4c Linux-2.6.12-rc2 |
959 960 961 |
(i+1)*sizeof(struct epic_tx_desc); } ep->tx_ring[i-1].next = ep->tx_ring_dma; |
1da177e4c Linux-2.6.12-rc2 |
962 |
} |
61357325f netdev: convert b... |
963 |
static netdev_tx_t epic_start_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4c Linux-2.6.12-rc2 |
964 |
{ |
4cf1653aa netdevice: safe c... |
965 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
966 967 968 |
int entry, free_count; u32 ctrl_word; unsigned long flags; |
f3b197ac2 [netdrvr] trim tr... |
969 |
|
5b057c6b1 [NET]: Avoid allo... |
970 |
if (skb_padto(skb, ETH_ZLEN)) |
6ed106549 net: use NETDEV_T... |
971 |
return NETDEV_TX_OK; |
1da177e4c Linux-2.6.12-rc2 |
972 973 974 975 976 977 978 979 980 981 |
/* Caution: the write order is important here, set the field with the "ownership" bit last. */ /* Calculate the next Tx descriptor entry. */ spin_lock_irqsave(&ep->lock, flags); free_count = ep->cur_tx - ep->dirty_tx; entry = ep->cur_tx % TX_RING_SIZE; ep->tx_skbuff[entry] = skb; |
f3b197ac2 [netdrvr] trim tr... |
982 |
ep->tx_ring[entry].bufaddr = pci_map_single(ep->pci_dev, skb->data, |
1da177e4c Linux-2.6.12-rc2 |
983 984 |
skb->len, PCI_DMA_TODEVICE); if (free_count < TX_QUEUE_LEN/2) {/* Typical path */ |
9ebfd4929 epic100 endiannes... |
985 |
ctrl_word = 0x100000; /* No interrupt */ |
1da177e4c Linux-2.6.12-rc2 |
986 |
} else if (free_count == TX_QUEUE_LEN/2) { |
9ebfd4929 epic100 endiannes... |
987 |
ctrl_word = 0x140000; /* Tx-done intr. */ |
1da177e4c Linux-2.6.12-rc2 |
988 |
} else if (free_count < TX_QUEUE_LEN - 1) { |
9ebfd4929 epic100 endiannes... |
989 |
ctrl_word = 0x100000; /* No Tx-done intr. */ |
1da177e4c Linux-2.6.12-rc2 |
990 991 |
} else { /* Leave room for an additional entry. */ |
9ebfd4929 epic100 endiannes... |
992 |
ctrl_word = 0x140000; /* Tx-done intr. */ |
1da177e4c Linux-2.6.12-rc2 |
993 994 |
ep->tx_full = 1; } |
9ebfd4929 epic100 endiannes... |
995 |
ep->tx_ring[entry].buflength = ctrl_word | skb->len; |
1da177e4c Linux-2.6.12-rc2 |
996 997 |
ep->tx_ring[entry].txstatus = ((skb->len >= ETH_ZLEN ? skb->len : ETH_ZLEN) << 16) |
9ebfd4929 epic100 endiannes... |
998 |
| DescOwn; |
1da177e4c Linux-2.6.12-rc2 |
999 1000 1001 1002 1003 1004 1005 1006 |
ep->cur_tx++; if (ep->tx_full) netif_stop_queue(dev); spin_unlock_irqrestore(&ep->lock, flags); /* Trigger an immediate transmit demand. */ outl(TxQueued, dev->base_addr + COMMAND); |
1da177e4c Linux-2.6.12-rc2 |
1007 1008 1009 1010 1011 1012 |
if (debug > 4) printk(KERN_DEBUG "%s: Queued Tx packet size %d to slot %d, " "flag %2.2x Tx status %8.8x. ", dev->name, (int)skb->len, entry, ctrl_word, (int)inl(dev->base_addr + TxSTAT)); |
6ed106549 net: use NETDEV_T... |
1013 |
return NETDEV_TX_OK; |
1da177e4c Linux-2.6.12-rc2 |
1014 1015 1016 1017 1018 |
} static void epic_tx_error(struct net_device *dev, struct epic_private *ep, int status) { |
275defc95 epic100: Use the ... |
1019 |
struct net_device_stats *stats = &dev->stats; |
1da177e4c Linux-2.6.12-rc2 |
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 |
#ifndef final_version /* There was an major error, log it. */ if (debug > 1) printk(KERN_DEBUG "%s: Transmit error, Tx status %8.8x. ", dev->name, status); #endif stats->tx_errors++; if (status & 0x1050) stats->tx_aborted_errors++; if (status & 0x0008) stats->tx_carrier_errors++; if (status & 0x0040) stats->tx_window_errors++; if (status & 0x0010) stats->tx_fifo_errors++; } static void epic_tx(struct net_device *dev, struct epic_private *ep) { unsigned int dirty_tx, cur_tx; /* * Note: if this lock becomes a problem we can narrow the locked * region at the cost of occasionally grabbing the lock more times. */ cur_tx = ep->cur_tx; for (dirty_tx = ep->dirty_tx; cur_tx - dirty_tx > 0; dirty_tx++) { struct sk_buff *skb; int entry = dirty_tx % TX_RING_SIZE; |
9ebfd4929 epic100 endiannes... |
1051 |
int txstatus = ep->tx_ring[entry].txstatus; |
1da177e4c Linux-2.6.12-rc2 |
1052 1053 1054 1055 1056 |
if (txstatus & DescOwn) break; /* It still hasn't been Txed */ if (likely(txstatus & 0x0001)) { |
275defc95 epic100: Use the ... |
1057 1058 1059 |
dev->stats.collisions += (txstatus >> 8) & 15; dev->stats.tx_packets++; dev->stats.tx_bytes += ep->tx_skbuff[entry]->len; |
1da177e4c Linux-2.6.12-rc2 |
1060 1061 1062 1063 1064 |
} else epic_tx_error(dev, ep, txstatus); /* Free the original skb. */ skb = ep->tx_skbuff[entry]; |
f3b197ac2 [netdrvr] trim tr... |
1065 |
pci_unmap_single(ep->pci_dev, ep->tx_ring[entry].bufaddr, |
1da177e4c Linux-2.6.12-rc2 |
1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 |
skb->len, PCI_DMA_TODEVICE); dev_kfree_skb_irq(skb); ep->tx_skbuff[entry] = NULL; } #ifndef final_version if (cur_tx - dirty_tx > TX_RING_SIZE) { printk(KERN_WARNING "%s: Out-of-sync dirty pointer, %d vs. %d, full=%d. ", dev->name, dirty_tx, cur_tx, ep->tx_full); dirty_tx += TX_RING_SIZE; } #endif ep->dirty_tx = dirty_tx; if (ep->tx_full && cur_tx - dirty_tx < TX_QUEUE_LEN - 4) { /* The ring is no longer full, allow new TX entries. */ ep->tx_full = 0; netif_wake_queue(dev); } } /* The interrupt handler does all of the Rx thread work and cleans up after the Tx thread. */ |
7d12e780e IRQ: Maintain reg... |
1090 |
static irqreturn_t epic_interrupt(int irq, void *dev_instance) |
1da177e4c Linux-2.6.12-rc2 |
1091 1092 |
{ struct net_device *dev = dev_instance; |
4cf1653aa netdevice: safe c... |
1093 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 |
long ioaddr = dev->base_addr; unsigned int handled = 0; int status; status = inl(ioaddr + INTSTAT); /* Acknowledge all of the current interrupt sources ASAP. */ outl(status & EpicNormalEvent, ioaddr + INTSTAT); if (debug > 4) { printk(KERN_DEBUG "%s: Interrupt, status=%#8.8x new " "intstat=%#8.8x. ", dev->name, status, (int)inl(ioaddr + INTSTAT)); } if ((status & IntrSummary) == 0) goto out; handled = 1; if ((status & EpicNapiEvent) && !ep->reschedule_in_poll) { spin_lock(&ep->napi_lock); |
288379f05 net: Remove redun... |
1116 |
if (napi_schedule_prep(&ep->napi)) { |
1da177e4c Linux-2.6.12-rc2 |
1117 |
epic_napi_irq_off(dev, ep); |
288379f05 net: Remove redun... |
1118 |
__napi_schedule(&ep->napi); |
1da177e4c Linux-2.6.12-rc2 |
1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 |
} else ep->reschedule_in_poll++; spin_unlock(&ep->napi_lock); } status &= ~EpicNapiEvent; /* Check uncommon events all at once. */ if (status & (CntFull | TxUnderrun | PCIBusErr170 | PCIBusErr175)) { if (status == EpicRemoved) goto out; /* Always update the error counts to avoid overhead later. */ |
275defc95 epic100: Use the ... |
1131 1132 1133 |
dev->stats.rx_missed_errors += inb(ioaddr + MPCNT); dev->stats.rx_frame_errors += inb(ioaddr + ALICNT); dev->stats.rx_crc_errors += inb(ioaddr + CRCCNT); |
1da177e4c Linux-2.6.12-rc2 |
1134 1135 |
if (status & TxUnderrun) { /* Tx FIFO underflow. */ |
275defc95 epic100: Use the ... |
1136 |
dev->stats.tx_fifo_errors++; |
1da177e4c Linux-2.6.12-rc2 |
1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 |
outl(ep->tx_threshold += 128, ioaddr + TxThresh); /* Restart the transmit process. */ outl(RestartTx, ioaddr + COMMAND); } if (status & PCIBusErr170) { printk(KERN_ERR "%s: PCI Bus Error! status %4.4x. ", dev->name, status); epic_pause(dev); epic_restart(dev); } /* Clear all error sources. */ outl(status & 0x7f18, ioaddr + INTSTAT); } out: if (debug > 3) { printk(KERN_DEBUG "%s: exit interrupt, intr_status=%#4.4x. ", dev->name, status); } return IRQ_RETVAL(handled); } static int epic_rx(struct net_device *dev, int budget) { |
4cf1653aa netdevice: safe c... |
1164 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 |
int entry = ep->cur_rx % RX_RING_SIZE; int rx_work_limit = ep->dirty_rx + RX_RING_SIZE - ep->cur_rx; int work_done = 0; if (debug > 4) printk(KERN_DEBUG " In epic_rx(), entry %d %8.8x. ", entry, ep->rx_ring[entry].rxstatus); if (rx_work_limit > budget) rx_work_limit = budget; /* If we own the next entry, it's a new packet. Send it up. */ |
9ebfd4929 epic100 endiannes... |
1178 1179 |
while ((ep->rx_ring[entry].rxstatus & DescOwn) == 0) { int status = ep->rx_ring[entry].rxstatus; |
1da177e4c Linux-2.6.12-rc2 |
1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 |
if (debug > 4) printk(KERN_DEBUG " epic_rx() status was %8.8x. ", status); if (--rx_work_limit < 0) break; if (status & 0x2006) { if (debug > 2) printk(KERN_DEBUG "%s: epic_rx() error status was %8.8x. ", dev->name, status); if (status & 0x2000) { printk(KERN_WARNING "%s: Oversized Ethernet frame spanned " "multiple buffers, status %4.4x! ", dev->name, status); |
275defc95 epic100: Use the ... |
1195 |
dev->stats.rx_length_errors++; |
1da177e4c Linux-2.6.12-rc2 |
1196 1197 |
} else if (status & 0x0006) /* Rx Frame errors are counted in hardware. */ |
275defc95 epic100: Use the ... |
1198 |
dev->stats.rx_errors++; |
1da177e4c Linux-2.6.12-rc2 |
1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 |
} else { /* Malloc up new buffer, compatible with net-2e. */ /* Omit the four octet CRC from the length. */ short pkt_len = (status >> 16) - 4; struct sk_buff *skb; if (pkt_len > PKT_BUF_SZ - 4) { printk(KERN_ERR "%s: Oversized Ethernet frame, status %x " "%d bytes. ", dev->name, status, pkt_len); pkt_len = 1514; } /* Check if the packet is long enough to accept without copying to a minimally-sized skbuff. */ |
8e95a2026 drivers/net: Move... |
1214 1215 |
if (pkt_len < rx_copybreak && (skb = dev_alloc_skb(pkt_len + 2)) != NULL) { |
1da177e4c Linux-2.6.12-rc2 |
1216 1217 1218 1219 1220 |
skb_reserve(skb, 2); /* 16 byte align the IP header */ pci_dma_sync_single_for_cpu(ep->pci_dev, ep->rx_ring[entry].bufaddr, ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
8c7b7faaa [NET]: Kill eth_c... |
1221 |
skb_copy_to_linear_data(skb, ep->rx_skbuff[entry]->data, pkt_len); |
1da177e4c Linux-2.6.12-rc2 |
1222 1223 1224 1225 1226 1227 |
skb_put(skb, pkt_len); pci_dma_sync_single_for_device(ep->pci_dev, ep->rx_ring[entry].bufaddr, ep->rx_buf_sz, PCI_DMA_FROMDEVICE); } else { |
f3b197ac2 [netdrvr] trim tr... |
1228 1229 |
pci_unmap_single(ep->pci_dev, ep->rx_ring[entry].bufaddr, |
1da177e4c Linux-2.6.12-rc2 |
1230 1231 1232 1233 1234 1235 |
ep->rx_buf_sz, PCI_DMA_FROMDEVICE); skb_put(skb = ep->rx_skbuff[entry], pkt_len); ep->rx_skbuff[entry] = NULL; } skb->protocol = eth_type_trans(skb, dev); netif_receive_skb(skb); |
275defc95 epic100: Use the ... |
1236 1237 |
dev->stats.rx_packets++; dev->stats.rx_bytes += pkt_len; |
1da177e4c Linux-2.6.12-rc2 |
1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 |
} work_done++; entry = (++ep->cur_rx) % RX_RING_SIZE; } /* Refill the Rx ring buffers. */ for (; ep->cur_rx - ep->dirty_rx > 0; ep->dirty_rx++) { entry = ep->dirty_rx % RX_RING_SIZE; if (ep->rx_skbuff[entry] == NULL) { struct sk_buff *skb; |
7a36df8a8 epic100: hamachi:... |
1248 |
skb = ep->rx_skbuff[entry] = dev_alloc_skb(ep->rx_buf_sz + 2); |
1da177e4c Linux-2.6.12-rc2 |
1249 1250 |
if (skb == NULL) break; |
1da177e4c Linux-2.6.12-rc2 |
1251 |
skb_reserve(skb, 2); /* Align IP on 16 byte boundaries */ |
f3b197ac2 [netdrvr] trim tr... |
1252 |
ep->rx_ring[entry].bufaddr = pci_map_single(ep->pci_dev, |
689be4394 [NET]: Remove gra... |
1253 |
skb->data, ep->rx_buf_sz, PCI_DMA_FROMDEVICE); |
1da177e4c Linux-2.6.12-rc2 |
1254 1255 |
work_done++; } |
9ebfd4929 epic100 endiannes... |
1256 1257 |
/* AV: shouldn't we add a barrier here? */ ep->rx_ring[entry].rxstatus = DescOwn; |
1da177e4c Linux-2.6.12-rc2 |
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 |
} return work_done; } static void epic_rx_err(struct net_device *dev, struct epic_private *ep) { long ioaddr = dev->base_addr; int status; status = inl(ioaddr + INTSTAT); if (status == EpicRemoved) return; if (status & RxOverflow) /* Missed a Rx frame. */ |
275defc95 epic100: Use the ... |
1272 |
dev->stats.rx_errors++; |
1da177e4c Linux-2.6.12-rc2 |
1273 1274 1275 |
if (status & (RxOverflow | RxFull)) outw(RxQueued, ioaddr + COMMAND); } |
bea3348ee [NET]: Make NAPI ... |
1276 |
static int epic_poll(struct napi_struct *napi, int budget) |
1da177e4c Linux-2.6.12-rc2 |
1277 |
{ |
bea3348ee [NET]: Make NAPI ... |
1278 1279 1280 |
struct epic_private *ep = container_of(napi, struct epic_private, napi); struct net_device *dev = ep->mii.dev; int work_done = 0; |
1da177e4c Linux-2.6.12-rc2 |
1281 |
long ioaddr = dev->base_addr; |
1da177e4c Linux-2.6.12-rc2 |
1282 1283 1284 |
rx_action: epic_tx(dev, ep); |
bea3348ee [NET]: Make NAPI ... |
1285 |
work_done += epic_rx(dev, budget); |
1da177e4c Linux-2.6.12-rc2 |
1286 1287 |
epic_rx_err(dev, ep); |
4ec241198 [NET]: Do not che... |
1288 |
if (work_done < budget) { |
1da177e4c Linux-2.6.12-rc2 |
1289 1290 1291 1292 1293 1294 1295 1296 1297 |
unsigned long flags; int more; /* A bit baroque but it avoids a (space hungry) spin_unlock */ spin_lock_irqsave(&ep->napi_lock, flags); more = ep->reschedule_in_poll; if (!more) { |
288379f05 net: Remove redun... |
1298 |
__napi_complete(napi); |
1da177e4c Linux-2.6.12-rc2 |
1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 |
outl(EpicNapiEvent, ioaddr + INTSTAT); epic_napi_irq_on(dev, ep); } else ep->reschedule_in_poll--; spin_unlock_irqrestore(&ep->napi_lock, flags); if (more) goto rx_action; } |
bea3348ee [NET]: Make NAPI ... |
1309 |
return work_done; |
1da177e4c Linux-2.6.12-rc2 |
1310 1311 1312 1313 1314 |
} static int epic_close(struct net_device *dev) { long ioaddr = dev->base_addr; |
4cf1653aa netdevice: safe c... |
1315 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1316 1317 1318 1319 |
struct sk_buff *skb; int i; netif_stop_queue(dev); |
bea3348ee [NET]: Make NAPI ... |
1320 |
napi_disable(&ep->napi); |
1da177e4c Linux-2.6.12-rc2 |
1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 |
if (debug > 1) printk(KERN_DEBUG "%s: Shutting down ethercard, status was %2.2x. ", dev->name, (int)inl(ioaddr + INTSTAT)); del_timer_sync(&ep->timer); epic_disable_int(dev, ep); free_irq(dev->irq, dev); epic_pause(dev); /* Free all the skbuffs in the Rx queue. */ for (i = 0; i < RX_RING_SIZE; i++) { skb = ep->rx_skbuff[i]; ep->rx_skbuff[i] = NULL; ep->rx_ring[i].rxstatus = 0; /* Not owned by Epic chip. */ ep->rx_ring[i].buflength = 0; if (skb) { |
f3b197ac2 [netdrvr] trim tr... |
1342 |
pci_unmap_single(ep->pci_dev, ep->rx_ring[i].bufaddr, |
1da177e4c Linux-2.6.12-rc2 |
1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 |
ep->rx_buf_sz, PCI_DMA_FROMDEVICE); dev_kfree_skb(skb); } ep->rx_ring[i].bufaddr = 0xBADF00D0; /* An invalid address. */ } for (i = 0; i < TX_RING_SIZE; i++) { skb = ep->tx_skbuff[i]; ep->tx_skbuff[i] = NULL; if (!skb) continue; |
f3b197ac2 [netdrvr] trim tr... |
1353 |
pci_unmap_single(ep->pci_dev, ep->tx_ring[i].bufaddr, |
1da177e4c Linux-2.6.12-rc2 |
1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 |
skb->len, PCI_DMA_TODEVICE); dev_kfree_skb(skb); } /* Green! Leave the chip in low-power mode. */ outl(0x0008, ioaddr + GENCTL); return 0; } static struct net_device_stats *epic_get_stats(struct net_device *dev) { |
1da177e4c Linux-2.6.12-rc2 |
1366 1367 1368 1369 |
long ioaddr = dev->base_addr; if (netif_running(dev)) { /* Update the error counts. */ |
275defc95 epic100: Use the ... |
1370 1371 1372 |
dev->stats.rx_missed_errors += inb(ioaddr + MPCNT); dev->stats.rx_frame_errors += inb(ioaddr + ALICNT); dev->stats.rx_crc_errors += inb(ioaddr + CRCCNT); |
1da177e4c Linux-2.6.12-rc2 |
1373 |
} |
275defc95 epic100: Use the ... |
1374 |
return &dev->stats; |
1da177e4c Linux-2.6.12-rc2 |
1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 |
} /* Set or clear the multicast filter for this adaptor. Note that we only use exclusion around actually queueing the new frame, not around filling ep->setup_frame. This is non-deterministic when re-entered but still correct. */ static void set_rx_mode(struct net_device *dev) { long ioaddr = dev->base_addr; |
4cf1653aa netdevice: safe c... |
1385 |
struct epic_private *ep = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1386 1387 1388 1389 1390 1391 |
unsigned char mc_filter[8]; /* Multicast hash filter */ int i; if (dev->flags & IFF_PROMISC) { /* Set promiscuous. */ outl(0x002C, ioaddr + RxCtrl); /* Unconditionally log net taps. */ |
1da177e4c Linux-2.6.12-rc2 |
1392 |
memset(mc_filter, 0xff, sizeof(mc_filter)); |
4cd24eaf0 net: use netdev_m... |
1393 |
} else if ((!netdev_mc_empty(dev)) || (dev->flags & IFF_ALLMULTI)) { |
1da177e4c Linux-2.6.12-rc2 |
1394 1395 1396 1397 1398 |
/* There is apparently a chip bug, so the multicast filter is never enabled. */ /* Too many to filter perfectly -- accept all multicasts. */ memset(mc_filter, 0xff, sizeof(mc_filter)); outl(0x000C, ioaddr + RxCtrl); |
4cd24eaf0 net: use netdev_m... |
1399 |
} else if (netdev_mc_empty(dev)) { |
1da177e4c Linux-2.6.12-rc2 |
1400 1401 1402 |
outl(0x0004, ioaddr + RxCtrl); return; } else { /* Never executed, for now. */ |
22bedad3c net: convert mult... |
1403 |
struct netdev_hw_addr *ha; |
1da177e4c Linux-2.6.12-rc2 |
1404 1405 |
memset(mc_filter, 0, sizeof(mc_filter)); |
22bedad3c net: convert mult... |
1406 |
netdev_for_each_mc_addr(ha, dev) { |
1da177e4c Linux-2.6.12-rc2 |
1407 |
unsigned int bit_nr = |
22bedad3c net: convert mult... |
1408 |
ether_crc_le(ETH_ALEN, ha->addr) & 0x3f; |
1da177e4c Linux-2.6.12-rc2 |
1409 1410 1411 1412 1413 1414 1415 1416 1417 |
mc_filter[bit_nr >> 3] |= (1 << bit_nr); } } /* ToDo: perhaps we need to stop the Tx and Rx process here? */ if (memcmp(mc_filter, ep->mc_filter, sizeof(mc_filter))) { for (i = 0; i < 4; i++) outw(((u16 *)mc_filter)[i], ioaddr + MC0 + i*4); memcpy(ep->mc_filter, mc_filter, sizeof(mc_filter)); } |
1da177e4c Linux-2.6.12-rc2 |
1418 1419 1420 1421 |
} static void netdev_get_drvinfo (struct net_device *dev, struct ethtool_drvinfo *info) { |
4cf1653aa netdevice: safe c... |
1422 |
struct epic_private *np = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1423 1424 1425 1426 1427 1428 1429 1430 |
strcpy (info->driver, DRV_NAME); strcpy (info->version, DRV_VERSION); strcpy (info->bus_info, pci_name(np->pci_dev)); } static int netdev_get_settings(struct net_device *dev, struct ethtool_cmd *cmd) { |
4cf1653aa netdevice: safe c... |
1431 |
struct epic_private *np = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 |
int rc; spin_lock_irq(&np->lock); rc = mii_ethtool_gset(&np->mii, cmd); spin_unlock_irq(&np->lock); return rc; } static int netdev_set_settings(struct net_device *dev, struct ethtool_cmd *cmd) { |
4cf1653aa netdevice: safe c... |
1443 |
struct epic_private *np = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 |
int rc; spin_lock_irq(&np->lock); rc = mii_ethtool_sset(&np->mii, cmd); spin_unlock_irq(&np->lock); return rc; } static int netdev_nway_reset(struct net_device *dev) { |
4cf1653aa netdevice: safe c... |
1455 |
struct epic_private *np = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1456 1457 1458 1459 1460 |
return mii_nway_restart(&np->mii); } static u32 netdev_get_link(struct net_device *dev) { |
4cf1653aa netdevice: safe c... |
1461 |
struct epic_private *np = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 |
return mii_link_ok(&np->mii); } static u32 netdev_get_msglevel(struct net_device *dev) { return debug; } static void netdev_set_msglevel(struct net_device *dev, u32 value) { debug = value; } static int ethtool_begin(struct net_device *dev) { unsigned long ioaddr = dev->base_addr; /* power-up, if interface is down */ if (! netif_running(dev)) { outl(0x0200, ioaddr + GENCTL); outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); } return 0; } static void ethtool_complete(struct net_device *dev) { unsigned long ioaddr = dev->base_addr; /* power-down, if interface is down */ if (! netif_running(dev)) { outl(0x0008, ioaddr + GENCTL); outl((inl(ioaddr + NVCTL) & ~0x483C) | 0x0000, ioaddr + NVCTL); } } |
7282d491e drivers/net: cons... |
1495 |
static const struct ethtool_ops netdev_ethtool_ops = { |
1da177e4c Linux-2.6.12-rc2 |
1496 1497 1498 1499 1500 1501 1502 |
.get_drvinfo = netdev_get_drvinfo, .get_settings = netdev_get_settings, .set_settings = netdev_set_settings, .nway_reset = netdev_nway_reset, .get_link = netdev_get_link, .get_msglevel = netdev_get_msglevel, .set_msglevel = netdev_set_msglevel, |
1da177e4c Linux-2.6.12-rc2 |
1503 1504 1505 1506 1507 1508 |
.begin = ethtool_begin, .complete = ethtool_complete }; static int netdev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) { |
4cf1653aa netdevice: safe c... |
1509 |
struct epic_private *np = netdev_priv(dev); |
1da177e4c Linux-2.6.12-rc2 |
1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 |
long ioaddr = dev->base_addr; struct mii_ioctl_data *data = if_mii(rq); int rc; /* power-up, if interface is down */ if (! netif_running(dev)) { outl(0x0200, ioaddr + GENCTL); outl((inl(ioaddr + NVCTL) & ~0x003C) | 0x4800, ioaddr + NVCTL); } /* all non-ethtool ioctls (the SIOC[GS]MIIxxx ioctls) */ spin_lock_irq(&np->lock); rc = generic_mii_ioctl(&np->mii, data, cmd, NULL); spin_unlock_irq(&np->lock); /* power-down, if interface is down */ if (! netif_running(dev)) { outl(0x0008, ioaddr + GENCTL); outl((inl(ioaddr + NVCTL) & ~0x483C) | 0x0000, ioaddr + NVCTL); } return rc; } static void __devexit epic_remove_one (struct pci_dev *pdev) { struct net_device *dev = pci_get_drvdata(pdev); |
4cf1653aa netdevice: safe c... |
1537 |
struct epic_private *ep = netdev_priv(dev); |
f3b197ac2 [netdrvr] trim tr... |
1538 |
|
1da177e4c Linux-2.6.12-rc2 |
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pci_free_consistent(pdev, TX_TOTAL_SIZE, ep->tx_ring, ep->tx_ring_dma); pci_free_consistent(pdev, RX_TOTAL_SIZE, ep->rx_ring, ep->rx_ring_dma); unregister_netdev(dev); #ifndef USE_IO_OPS iounmap((void*) dev->base_addr); #endif pci_release_regions(pdev); free_netdev(dev); pci_disable_device(pdev); pci_set_drvdata(pdev, NULL); /* pci_power_off(pdev, -1); */ } #ifdef CONFIG_PM static int epic_suspend (struct pci_dev *pdev, pm_message_t state) { struct net_device *dev = pci_get_drvdata(pdev); long ioaddr = dev->base_addr; if (!netif_running(dev)) return 0; epic_pause(dev); /* Put the chip into low-power mode. */ outl(0x0008, ioaddr + GENCTL); /* pci_power_off(pdev, -1); */ return 0; } static int epic_resume (struct pci_dev *pdev) { struct net_device *dev = pci_get_drvdata(pdev); if (!netif_running(dev)) return 0; epic_restart(dev); /* pci_power_on(pdev); */ return 0; } #endif /* CONFIG_PM */ static struct pci_driver epic_driver = { .name = DRV_NAME, .id_table = epic_pci_tbl, .probe = epic_init_one, .remove = __devexit_p(epic_remove_one), #ifdef CONFIG_PM .suspend = epic_suspend, .resume = epic_resume, #endif /* CONFIG_PM */ }; static int __init epic_init (void) { /* when a module, this is printed whether or not devices are found in probe */ #ifdef MODULE |
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printk (KERN_INFO "%s%s", |
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version, version2); |
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#endif |
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return pci_register_driver(&epic_driver); |
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} static void __exit epic_cleanup (void) { pci_unregister_driver (&epic_driver); } module_init(epic_init); module_exit(epic_cleanup); |