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Release 4.11 drivers/net/ethernet/dec/tulip/de2104x.c

Directory: drivers/net/ethernet/dec/tulip
/* de2104x.c: A Linux PCI Ethernet driver for Intel/Digital 21040/1 chips. */
/*
        Copyright 2001,2003 Jeff Garzik <jgarzik@pobox.com>

        Copyright 1994, 1995 Digital Equipment Corporation.         [de4x5.c]
        Written/copyright 1994-2001 by Donald Becker.               [tulip.c]

        This software may be used and distributed according to the terms of
        the GNU General Public License (GPL), incorporated herein by reference.
        Drivers based on or derived from this code fall under the GPL and must
        retain the authorship, copyright and license notice.  This file is not
        a complete program and may only be used when the entire operating
        system is licensed under the GPL.

        See the file COPYING in this distribution for more information.

        TODO, in rough priority order:
        * Support forcing media type with a module parameter,
          like dl2k.c/sundance.c
        * Constants (module parms?) for Rx work limit
        * Complete reset on PciErr
        * Jumbo frames / dev->change_mtu
        * Adjust Rx FIFO threshold and Max Rx DMA burst on Rx FIFO error
        * Adjust Tx FIFO threshold and Max Tx DMA burst on Tx FIFO error
        * Implement Tx software interrupt mitigation via
          Tx descriptor bit

 */


#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt


#define DRV_NAME		"de2104x"

#define DRV_VERSION		"0.7"

#define DRV_RELDATE		"Mar 17, 2004"

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#include <linux/delay.h>
#include <linux/ethtool.h>
#include <linux/compiler.h>
#include <linux/rtnetlink.h>
#include <linux/crc32.h>
#include <linux/slab.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <linux/uaccess.h>
#include <asm/unaligned.h>

/* These identify the driver base version and may not be removed. */

static char version[] =
"PCI Ethernet driver v" DRV_VERSION " (" DRV_RELDATE ")";

MODULE_AUTHOR("Jeff Garzik <jgarzik@pobox.com>");
MODULE_DESCRIPTION("Intel/Digital 21040/1 series PCI Ethernet driver");
MODULE_LICENSE("GPL");

MODULE_VERSION(DRV_VERSION);


static int debug = -1;
module_param (debug, int, 0);
MODULE_PARM_DESC (debug, "de2104x bitmapped message enable number");

/* Set the copy breakpoint for the copy-only-tiny-buffer Rx structure. */
#if defined(__alpha__) || defined(__arm__) || defined(__hppa__) || \
        defined(CONFIG_SPARC) || defined(__ia64__) ||		   \
        defined(__sh__) || defined(__mips__)

static int rx_copybreak = 1518;
#else

static int rx_copybreak = 100;
#endif
module_param (rx_copybreak, int, 0);
MODULE_PARM_DESC (rx_copybreak, "de2104x Breakpoint at which Rx packets are copied");


#define DE_DEF_MSG_ENABLE	(NETIF_MSG_DRV          | \
                                 NETIF_MSG_PROBE        | \
                                 NETIF_MSG_LINK         | \
                                 NETIF_MSG_IFDOWN       | \
                                 NETIF_MSG_IFUP         | \
                                 NETIF_MSG_RX_ERR       | \
                                 NETIF_MSG_TX_ERR)

/* Descriptor skip length in 32 bit longwords. */
#ifndef CONFIG_DE2104X_DSL

#define DSL			0
#else

#define DSL			CONFIG_DE2104X_DSL
#endif


#define DE_RX_RING_SIZE		64

#define DE_TX_RING_SIZE		64

#define DE_RING_BYTES		\
		((sizeof(struct de_desc) * DE_RX_RING_SIZE) +   \
                (sizeof(struct de_desc) * DE_TX_RING_SIZE))

#define NEXT_TX(N)		(((N) + 1) & (DE_TX_RING_SIZE - 1))

#define NEXT_RX(N)		(((N) + 1) & (DE_RX_RING_SIZE - 1))

#define TX_BUFFS_AVAIL(CP)					\
	(((CP)->tx_tail <= (CP)->tx_head) ?                     \
          (CP)->tx_tail + (DE_TX_RING_SIZE - 1) - (CP)->tx_head :       \
          (CP)->tx_tail - (CP)->tx_head - 1)


#define PKT_BUF_SZ		1536	
/* Size of each temporary Rx buffer.*/

#define RX_OFFSET		2


#define DE_SETUP_SKB		((struct sk_buff *) 1)

#define DE_DUMMY_SKB		((struct sk_buff *) 2)

#define DE_SETUP_FRAME_WORDS	96

#define DE_EEPROM_WORDS		256

#define DE_EEPROM_SIZE		(DE_EEPROM_WORDS * sizeof(u16))

#define DE_MAX_MEDIA		5


#define DE_MEDIA_TP_AUTO	0

#define DE_MEDIA_BNC		1

#define DE_MEDIA_AUI		2

#define DE_MEDIA_TP		3

#define DE_MEDIA_TP_FD		4

#define DE_MEDIA_INVALID	DE_MAX_MEDIA

#define DE_MEDIA_FIRST		0

#define DE_MEDIA_LAST		(DE_MAX_MEDIA - 1)

#define DE_AUI_BNC		(SUPPORTED_AUI | SUPPORTED_BNC)


#define DE_TIMER_LINK		(60 * HZ)

#define DE_TIMER_NO_LINK	(5 * HZ)


#define DE_NUM_REGS		16

#define DE_REGS_SIZE		(DE_NUM_REGS * sizeof(u32))

#define DE_REGS_VER		1

/* Time in jiffies before concluding the transmitter is hung. */

#define TX_TIMEOUT		(6*HZ)

/* This is a mysterious value that can be written to CSR11 in the 21040 (only)
   to support a pre-NWay full-duplex signaling mechanism using short frames.
   No one knows what it should be, but if left at its default value some
   10base2(!) packets trigger a full-duplex-request interrupt. */

#define FULL_DUPLEX_MAGIC	0x6969

enum {
	/* NIC registers */
	
BusMode			= 0x00,
	
TxPoll			= 0x08,
	
RxPoll			= 0x10,
	
RxRingAddr		= 0x18,
	
TxRingAddr		= 0x20,
	
MacStatus		= 0x28,
	
MacMode			= 0x30,
	
IntrMask		= 0x38,
	
RxMissed		= 0x40,
	
ROMCmd			= 0x48,
	
CSR11			= 0x58,
	
SIAStatus		= 0x60,
	
CSR13			= 0x68,
	
CSR14			= 0x70,
	
CSR15			= 0x78,
	
PCIPM			= 0x40,

	/* BusMode bits */
	
CmdReset		= (1 << 0),
	
CacheAlign16		= 0x00008000,
	
BurstLen4		= 0x00000400,
	
DescSkipLen		= (DSL << 2),

	/* Rx/TxPoll bits */
	
NormalTxPoll		= (1 << 0),
	
NormalRxPoll		= (1 << 0),

	/* Tx/Rx descriptor status bits */
	
DescOwn			= (1 << 31),
	
RxError			= (1 << 15),
	
RxErrLong		= (1 << 7),
	
RxErrCRC		= (1 << 1),
	
RxErrFIFO		= (1 << 0),
	
RxErrRunt		= (1 << 11),
	
RxErrFrame		= (1 << 14),
	
RingEnd			= (1 << 25),
	
FirstFrag		= (1 << 29),
	
LastFrag		= (1 << 30),
	
TxError			= (1 << 15),
	
TxFIFOUnder		= (1 << 1),
	
TxLinkFail		= (1 << 2) | (1 << 10) | (1 << 11),
	
TxMaxCol		= (1 << 8),
	
TxOWC			= (1 << 9),
	
TxJabber		= (1 << 14),
	
SetupFrame		= (1 << 27),
	
TxSwInt			= (1 << 31),

	/* MacStatus bits */
	
IntrOK			= (1 << 16),
	
IntrErr			= (1 << 15),
	
RxIntr			= (1 << 6),
	
RxEmpty			= (1 << 7),
	
TxIntr			= (1 << 0),
	
TxEmpty			= (1 << 2),
	
PciErr			= (1 << 13),
	
TxState			= (1 << 22) | (1 << 21) | (1 << 20),
	
RxState			= (1 << 19) | (1 << 18) | (1 << 17),
	
LinkFail		= (1 << 12),
	
LinkPass		= (1 << 4),
	
RxStopped		= (1 << 8),
	
TxStopped		= (1 << 1),

	/* MacMode bits */
	
TxEnable		= (1 << 13),
	
RxEnable		= (1 << 1),
	
RxTx			= TxEnable | RxEnable,
	
FullDuplex		= (1 << 9),
	
AcceptAllMulticast	= (1 << 7),
	
AcceptAllPhys		= (1 << 6),
	
BOCnt			= (1 << 5),
	
MacModeClear		= (1<<12) | (1<<11) | (1<<10) | (1<<8) | (1<<3) |
				  RxTx | BOCnt | AcceptAllPhys | AcceptAllMulticast,

	/* ROMCmd bits */
	
EE_SHIFT_CLK		= 0x02,	/* EEPROM shift clock. */
	
EE_CS			= 0x01,	/* EEPROM chip select. */
	
EE_DATA_WRITE		= 0x04,	/* Data from the Tulip to EEPROM. */
	
EE_WRITE_0		= 0x01,
	
EE_WRITE_1		= 0x05,
	
EE_DATA_READ		= 0x08,	/* Data from the EEPROM chip. */
	
EE_ENB			= (0x4800 | EE_CS),

	/* The EEPROM commands include the alway-set leading bit. */
	
EE_READ_CMD		= 6,

	/* RxMissed bits */
	
RxMissedOver		= (1 << 16),
	
RxMissedMask		= 0xffff,

	/* SROM-related bits */
	
SROMC0InfoLeaf		= 27,
	
MediaBlockMask		= 0x3f,
	
MediaCustomCSRs		= (1 << 6),

	/* PCIPM bits */
	
PM_Sleep		= (1 << 31),
	
PM_Snooze		= (1 << 30),
	
PM_Mask			= PM_Sleep | PM_Snooze,

	/* SIAStatus bits */
	
NWayState		= (1 << 14) | (1 << 13) | (1 << 12),
	
NWayRestart		= (1 << 12),
	
NonselPortActive	= (1 << 9),
	
SelPortActive		= (1 << 8),
	
LinkFailStatus		= (1 << 2),
	
NetCxnErr		= (1 << 1),
};


static const u32 de_intr_mask =
	IntrOK | IntrErr | RxIntr | RxEmpty | TxIntr | TxEmpty |
	LinkPass | LinkFail | PciErr;

/*
 * Set the programmable burst length to 4 longwords for all:
 * DMA errors result without these values. Cache align 16 long.
 */

static const u32 de_bus_mode = CacheAlign16 | BurstLen4 | DescSkipLen;


struct de_srom_media_block {
	
u8			opts;
	
u16			csr13;
	
u16			csr14;
	
u16			csr15;
} 
__packed;


struct de_srom_info_leaf {
	
u16			default_media;
	
u8			n_blocks;
	
u8			unused;
} 
__packed;


struct de_desc {
	
__le32			opts1;
	
__le32			opts2;
	
__le32			addr1;
	
__le32			addr2;
#if DSL
	
__le32			skip[DSL];
#endif
};


struct media_info {
	
u16			type;	/* DE_MEDIA_xxx */
	
u16			csr13;
	
u16			csr14;
	
u16			csr15;
};


struct ring_info {
	
struct sk_buff		*skb;
	
dma_addr_t		mapping;
};


struct de_private {
	
unsigned		tx_head;
	
unsigned		tx_tail;
	
unsigned		rx_tail;

	
void			__iomem *regs;
	
struct net_device	*dev;
	
spinlock_t		lock;

	
struct de_desc		*rx_ring;
	
struct de_desc		*tx_ring;
	
struct ring_info	tx_skb[DE_TX_RING_SIZE];
	
struct ring_info	rx_skb[DE_RX_RING_SIZE];
	
unsigned		rx_buf_sz;
	
dma_addr_t		ring_dma;

	
u32			msg_enable;

	
struct net_device_stats net_stats;

	
struct pci_dev		*pdev;

	
u16			setup_frame[DE_SETUP_FRAME_WORDS];

	
u32			media_type;
	
u32			media_supported;
	
u32			media_advertise;
	
struct media_info	media[DE_MAX_MEDIA];
	
struct timer_list	media_timer;

	
u8			*ee_data;
	
unsigned		board_idx;
	
unsigned		de21040 : 1;
	
unsigned		media_lock : 1;
};


static void de_set_rx_mode (struct net_device *dev);
static void de_tx (struct de_private *de);
static void de_clean_rings (struct de_private *de);
static void de_media_interrupt (struct de_private *de, u32 status);
static void de21040_media_timer (unsigned long data);
static void de21041_media_timer (unsigned long data);
static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media);



static const struct pci_device_id de_pci_tbl[] = {
	{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
	{ PCI_VENDOR_ID_DEC, PCI_DEVICE_ID_DEC_TULIP_PLUS,
	  PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
	{ },
};
MODULE_DEVICE_TABLE(pci, de_pci_tbl);


static const char * const media_name[DE_MAX_MEDIA] = {
	"10baseT auto",
	"BNC",
	"AUI",
	"10baseT-HD",
	"10baseT-FD"
};

/* 21040 transceiver register settings:
 * TP AUTO(unused), BNC(unused), AUI, TP, TP FD*/

static u16 t21040_csr13[] = { 0, 0, 0x8F09, 0x8F01, 0x8F01, };

static u16 t21040_csr14[] = { 0, 0, 0x0705, 0xFFFF, 0xFFFD, };

static u16 t21040_csr15[] = { 0, 0, 0x0006, 0x0000, 0x0000, };

/* 21041 transceiver register settings: TP AUTO, BNC, AUI, TP, TP FD*/

static u16 t21041_csr13[] = { 0xEF01, 0xEF09, 0xEF09, 0xEF01, 0xEF09, };

static u16 t21041_csr14[] = { 0xFFFF, 0xF7FD, 0xF7FD, 0x7F3F, 0x7F3D, };
/* If on-chip autonegotiation is broken, use half-duplex (FF3F) instead */

static u16 t21041_csr14_brk[] = { 0xFF3F, 0xF7FD, 0xF7FD, 0x7F3F, 0x7F3D, };

static u16 t21041_csr15[] = { 0x0008, 0x0006, 0x000E, 0x0008, 0x0008, };



#define dr32(reg)	ioread32(de->regs + (reg))

#define dw32(reg, val)	iowrite32((val), de->regs + (reg))





static void de_rx_err_acct (struct de_private *de, unsigned rx_tail,
			    u32 status, u32 len)
{
	netif_dbg(de, rx_err, de->dev,
		  "rx err, slot %d status 0x%x len %d\n",
		  rx_tail, status, len);

	if ((status & 0x38000300) != 0x0300) {
		/* Ingore earlier buffers. */
		if ((status & 0xffff) != 0x7fff) {
			netif_warn(de, rx_err, de->dev,
				   "Oversized Ethernet frame spanned multiple buffers, status %08x!\n",
				   status);
			de->net_stats.rx_length_errors++;
		}
	} else if (status & RxError) {
		/* There was a fatal error. */
		de->net_stats.rx_errors++; /* end of a packet.*/
		if (status & 0x0890) de->net_stats.rx_length_errors++;
		if (status & RxErrCRC) de->net_stats.rx_crc_errors++;
		if (status & RxErrFIFO) de->net_stats.rx_fifo_errors++;
	}
}


Contributors
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Linus Torvalds13191.61%125.00%


Joe Perches128.39%375.00%


Total143100.00%4100.00%






static void de_rx (struct de_private *de)
{
	unsigned rx_tail = de->rx_tail;
	unsigned rx_work = DE_RX_RING_SIZE;
	unsigned drop = 0;
	int rc;

	while (--rx_work) {
		u32 status, len;
		dma_addr_t mapping;
		struct sk_buff *skb, *copy_skb;
		unsigned copying_skb, buflen;

		skb = de->rx_skb[rx_tail].skb;
		BUG_ON(!skb);
		rmb();
		status = le32_to_cpu(de->rx_ring[rx_tail].opts1);
		if (status & DescOwn)
			break;

		len = ((status >> 16) & 0x7ff) - 4;
		mapping = de->rx_skb[rx_tail].mapping;

		if (unlikely(drop)) {
			de->net_stats.rx_dropped++;
			goto rx_next;
		}

		if (unlikely((status & 0x38008300) != 0x0300)) {
			de_rx_err_acct(de, rx_tail, status, len);
			goto rx_next;
		}

		copying_skb = (len <= rx_copybreak);

		netif_dbg(de, rx_status, de->dev,
			  "rx slot %d status 0x%x len %d copying? %d\n",
			  rx_tail, status, len, copying_skb);

		buflen = copying_skb ? (len + RX_OFFSET) : de->rx_buf_sz;
		copy_skb = netdev_alloc_skb(de->dev, buflen);
		if (unlikely(!copy_skb)) {
			de->net_stats.rx_dropped++;
			drop = 1;
			rx_work = 100;
			goto rx_next;
		}

		if (!copying_skb) {
			pci_unmap_single(de->pdev, mapping,
					 buflen, PCI_DMA_FROMDEVICE);
			skb_put(skb, len);

			mapping =
			de->rx_skb[rx_tail].mapping =
				pci_map_single(de->pdev, copy_skb->data,
					       buflen, PCI_DMA_FROMDEVICE);
			de->rx_skb[rx_tail].skb = copy_skb;
		} else {
			pci_dma_sync_single_for_cpu(de->pdev, mapping, len, PCI_DMA_FROMDEVICE);
			skb_reserve(copy_skb, RX_OFFSET);
			skb_copy_from_linear_data(skb, skb_put(copy_skb, len),
						  len);
			pci_dma_sync_single_for_device(de->pdev, mapping, len, PCI_DMA_FROMDEVICE);

			/* We'll reuse the original ring buffer. */
			skb = copy_skb;
		}

		skb->protocol = eth_type_trans (skb, de->dev);

		de->net_stats.rx_packets++;
		de->net_stats.rx_bytes += skb->len;
		rc = netif_rx (skb);
		if (rc == NET_RX_DROP)
			drop = 1;

rx_next:
		if (rx_tail == (DE_RX_RING_SIZE - 1))
			de->rx_ring[rx_tail].opts2 =
				cpu_to_le32(RingEnd | de->rx_buf_sz);
		else
			de->rx_ring[rx_tail].opts2 = cpu_to_le32(de->rx_buf_sz);
		de->rx_ring[rx_tail].addr1 = cpu_to_le32(mapping);
		wmb();
		de->rx_ring[rx_tail].opts1 = cpu_to_le32(DescOwn);
		rx_tail = NEXT_RX(rx_tail);
	}

	if (!rx_work)
		netdev_warn(de->dev, "rx work limit reached\n");

	de->rx_tail = rx_tail;
}


Contributors
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Linus Torvalds47490.11%19.09%


Risto Suominen173.23%19.09%


Andrew Morton142.66%19.09%


Joe Perches81.52%327.27%


Pradeep A. Dalvi50.95%19.09%


Arnaldo Carvalho de Melo30.57%19.09%


Eric Sesterhenn / Snakebyte30.57%19.09%


Roel Kluin10.19%19.09%


David S. Miller10.19%19.09%


Total526100.00%11100.00%






static irqreturn_t de_interrupt (int irq, void *dev_instance)
{
	struct net_device *dev = dev_instance;
	struct de_private *de = netdev_priv(dev);
	u32 status;

	status = dr32(MacStatus);
	if ((!(status & (IntrOK|IntrErr))) || (status == 0xFFFF))
		return IRQ_NONE;

	netif_dbg(de, intr, dev, "intr, status %08x mode %08x desc %u/%u/%u\n",
		  status, dr32(MacMode),
		  de->rx_tail, de->tx_head, de->tx_tail);

	dw32(MacStatus, status);

	if (status & (RxIntr | RxEmpty)) {
		de_rx(de);
		if (status & RxEmpty)
			dw32(RxPoll, NormalRxPoll);
	}

	spin_lock(&de->lock);

	if (status & (TxIntr | TxEmpty))
		de_tx(de);

	if (status & (LinkPass | LinkFail))
		de_media_interrupt(de, status);

	spin_unlock(&de->lock);

	if (status & PciErr) {
		u16 pci_status;

		pci_read_config_word(de->pdev, PCI_STATUS, &pci_status);
		pci_write_config_word(de->pdev, PCI_STATUS, pci_status);
		netdev_err(de->dev,
			   "PCI bus error, status=%08x, PCI status=%04x\n",
			   status, pci_status);
	}

	return IRQ_HANDLED;
}


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Joe Perches104.37%350.00%


Jeff Garzik73.06%116.67%


Wang Chen31.31%116.67%


Total229100.00%6100.00%






static void de_tx (struct de_private *de)
{
	unsigned tx_head = de->tx_head;
	unsigned tx_tail = de->tx_tail;

	while (tx_tail != tx_head) {
		struct sk_buff *skb;
		u32 status;

		rmb();
		status = le32_to_cpu(de->tx_ring[tx_tail].opts1);
		if (status & DescOwn)
			break;

		skb = de->tx_skb[tx_tail].skb;
		BUG_ON(!skb);
		if (unlikely(skb == DE_DUMMY_SKB))
			goto next;

		if (unlikely(skb == DE_SETUP_SKB)) {
			pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping,
					 sizeof(de->setup_frame), PCI_DMA_TODEVICE);
			goto next;
		}

		pci_unmap_single(de->pdev, de->tx_skb[tx_tail].mapping,
				 skb->len, PCI_DMA_TODEVICE);

		if (status & LastFrag) {
			if (status & TxError) {
				netif_dbg(de, tx_err, de->dev,
					  "tx err, status 0x%x\n",
					  status);
				de->net_stats.tx_errors++;
				if (status & TxOWC)
					de->net_stats.tx_window_errors++;
				if (status & TxMaxCol)
					de->net_stats.tx_aborted_errors++;
				if (status & TxLinkFail)
					de->net_stats.tx_carrier_errors++;
				if (status & TxFIFOUnder)
					de->net_stats.tx_fifo_errors++;
			} else {
				de->net_stats.tx_packets++;
				de->net_stats.tx_bytes += skb->len;
				netif_dbg(de, tx_done, de->dev,
					  "tx done, slot %d\n", tx_tail);
			}
			dev_kfree_skb_irq(skb);
		}

next:
		de->tx_skb[tx_tail].skb = NULL;

		tx_tail = NEXT_TX(tx_tail);
	}

	de->tx_tail = tx_tail;

	if (netif_queue_stopped(de->dev) && (TX_BUFFS_AVAIL(de) > (DE_TX_RING_SIZE / 4)))
		netif_wake_queue(de->dev);
}


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Linus Torvalds32796.18%133.33%


Joe Perches102.94%133.33%


Eric Sesterhenn / Snakebyte30.88%133.33%


Total340100.00%3100.00%






static netdev_tx_t de_start_xmit (struct sk_buff *skb,
					struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);
	unsigned int entry, tx_free;
	u32 mapping, len, flags = FirstFrag | LastFrag;
	struct de_desc *txd;

	spin_lock_irq(&de->lock);

	tx_free = TX_BUFFS_AVAIL(de);
	if (tx_free == 0) {
		netif_stop_queue(dev);
		spin_unlock_irq(&de->lock);
		return NETDEV_TX_BUSY;
	}
	tx_free--;

	entry = de->tx_head;

	txd = &de->tx_ring[entry];

	len = skb->len;
	mapping = pci_map_single(de->pdev, skb->data, len, PCI_DMA_TODEVICE);
	if (entry == (DE_TX_RING_SIZE - 1))
		flags |= RingEnd;
	if (!tx_free || (tx_free == (DE_TX_RING_SIZE / 2)))
		flags |= TxSwInt;
	flags |= len;
	txd->opts2 = cpu_to_le32(flags);
	txd->addr1 = cpu_to_le32(mapping);

	de->tx_skb[entry].skb = skb;
	de->tx_skb[entry].mapping = mapping;
	wmb();

	txd->opts1 = cpu_to_le32(DescOwn);
	wmb();

	de->tx_head = NEXT_TX(entry);
	netif_dbg(de, tx_queued, dev, "tx queued, slot %d, skblen %d\n",
		  entry, skb->len);

	if (tx_free == 0)
		netif_stop_queue(dev);

	spin_unlock_irq(&de->lock);

	/* Trigger an immediate transmit demand. */
	dw32(TxPoll, NormalTxPoll);

	return NETDEV_TX_OK;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds26696.03%116.67%


Joe Perches51.81%116.67%


Wang Chen31.08%116.67%


Patrick McHardy20.72%233.33%


Stephen Hemminger10.36%116.67%


Total277100.00%6100.00%



/* Set or clear the multicast filter for this adaptor.
   Note that we only use exclusion around actually queueing the
   new frame, not around filling de->setup_frame.  This is non-deterministic
   when re-entered but still correct. */




static void build_setup_frame_hash(u16 *setup_frm, struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);
	u16 hash_table[32];
	struct netdev_hw_addr *ha;
	int i;
	u16 *eaddrs;

	memset(hash_table, 0, sizeof(hash_table));
	__set_bit_le(255, hash_table);			/* Broadcast entry */
	/* This should work on big-endian machines as well. */
	netdev_for_each_mc_addr(ha, dev) {
		int index = ether_crc_le(ETH_ALEN, ha->addr) & 0x1ff;

		__set_bit_le(index, hash_table);
	}

	for (i = 0; i < 32; i++) {
		*setup_frm++ = hash_table[i];
		*setup_frm++ = hash_table[i];
	}
	setup_frm = &de->setup_frame[13*6];

	/* Fill the final entry with our physical address. */
	eaddrs = (u16 *)dev->dev_addr;
	*setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
	*setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
	*setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds18792.12%116.67%


Jiri Pirko115.42%350.00%


Wang Chen31.48%116.67%


Takuya Yoshikawa20.99%116.67%


Total203100.00%6100.00%






static void build_setup_frame_perfect(u16 *setup_frm, struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);
	struct netdev_hw_addr *ha;
	u16 *eaddrs;

	/* We have <= 14 addresses so we can use the wonderful
           16 address perfect filtering of the Tulip. */
	netdev_for_each_mc_addr(ha, dev) {
		eaddrs = (u16 *) ha->addr;
		*setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
		*setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
		*setup_frm++ = *eaddrs; *setup_frm++ = *eaddrs++;
	}
	/* Fill the unused entries with the broadcast address. */
	memset(setup_frm, 0xff, (15 - netdev_mc_count(dev)) * 12);
	setup_frm = &de->setup_frame[15*6];

	/* Fill the final entry with our physical address. */
	eaddrs = (u16 *)dev->dev_addr;
	*setup_frm++ = eaddrs[0]; *setup_frm++ = eaddrs[0];
	*setup_frm++ = eaddrs[1]; *setup_frm++ = eaddrs[1];
	*setup_frm++ = eaddrs[2]; *setup_frm++ = eaddrs[2];
}



Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds17791.24%120.00%


Jiri Pirko147.22%360.00%


Wang Chen31.55%120.00%


Total194100.00%5100.00%






static void __de_set_rx_mode (struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);
	u32 macmode;
	unsigned int entry;
	u32 mapping;
	struct de_desc *txd;
	struct de_desc *dummy_txd = NULL;

	macmode = dr32(MacMode) & ~(AcceptAllMulticast | AcceptAllPhys);

	if (dev->flags & IFF_PROMISC) {	/* Set promiscuous. */
		macmode |= AcceptAllMulticast | AcceptAllPhys;
		goto out;
	}

	if ((netdev_mc_count(dev) > 1000) || (dev->flags & IFF_ALLMULTI)) {
		/* Too many to filter well -- accept all multicasts. */
		macmode |= AcceptAllMulticast;
		goto out;
	}

	/* Note that only the low-address shortword of setup_frame is valid!
           The values are doubled for big-endian architectures. */
	if (netdev_mc_count(dev) > 14)	/* Must use a multicast hash table. */
		build_setup_frame_hash (de->setup_frame, dev);
	else
		build_setup_frame_perfect (de->setup_frame, dev);

	/*
         * Now add this frame to the Tx list.
         */

	entry = de->tx_head;

	/* Avoid a chip errata by prefixing a dummy entry. */
	if (entry != 0) {
		de->tx_skb[entry].skb = DE_DUMMY_SKB;

		dummy_txd = &de->tx_ring[entry];
		dummy_txd->opts2 = (entry == (DE_TX_RING_SIZE - 1)) ?
				   cpu_to_le32(RingEnd) : 0;
		dummy_txd->addr1 = 0;

		/* Must set DescOwned later to avoid race with chip */

		entry = NEXT_TX(entry);
	}

	de->tx_skb[entry].skb = DE_SETUP_SKB;
	de->tx_skb[entry].mapping = mapping =
	    pci_map_single (de->pdev, de->setup_frame,
			    sizeof (de->setup_frame), PCI_DMA_TODEVICE);

	/* Put the setup frame on the Tx list. */
	txd = &de->tx_ring[entry];
	if (entry == (DE_TX_RING_SIZE - 1))
		txd->opts2 = cpu_to_le32(SetupFrame | RingEnd | sizeof (de->setup_frame));
	else
		txd->opts2 = cpu_to_le32(SetupFrame | sizeof (de->setup_frame));
	txd->addr1 = cpu_to_le32(mapping);
	wmb();

	txd->opts1 = cpu_to_le32(DescOwn);
	wmb();

	if (dummy_txd) {
		dummy_txd->opts1 = cpu_to_le32(DescOwn);
		wmb();
	}

	de->tx_head = NEXT_TX(entry);

	if (TX_BUFFS_AVAIL(de) == 0)
		netif_stop_queue(dev);

	/* Trigger an immediate transmit demand. */
	dw32(TxPoll, NormalTxPoll);

out:
	if (macmode != dr32(MacMode))
		dw32(MacMode, macmode);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds38095.72%125.00%


Krzysztof Hałasa82.02%125.00%


Jiri Pirko61.51%125.00%


Wang Chen30.76%125.00%


Total397100.00%4100.00%






static void de_set_rx_mode (struct net_device *dev)
{
	unsigned long flags;
	struct de_private *de = netdev_priv(dev);

	spin_lock_irqsave (&de->lock, flags);
	__de_set_rx_mode(dev);
	spin_unlock_irqrestore (&de->lock, flags);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds4794.00%150.00%


Wang Chen36.00%150.00%


Total50100.00%2100.00%






static inline void de_rx_missed(struct de_private *de, u32 rx_missed)
{
	if (unlikely(rx_missed & RxMissedOver))
		de->net_stats.rx_missed_errors += RxMissedMask;
	else
		de->net_stats.rx_missed_errors += (rx_missed & RxMissedMask);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds45100.00%1100.00%


Total45100.00%1100.00%






static void __de_get_stats(struct de_private *de)
{
	u32 tmp = dr32(RxMissed); /* self-clearing */

	de_rx_missed(de, tmp);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds27100.00%1100.00%


Total27100.00%1100.00%






static struct net_device_stats *de_get_stats(struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);

	/* The chip only need report frame silently dropped. */
	spin_lock_irq(&de->lock);
 	if (netif_running(dev) && netif_device_present(dev))
 		__de_get_stats(de);
	spin_unlock_irq(&de->lock);

	return &de->net_stats;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds6095.24%150.00%


Wang Chen34.76%150.00%


Total63100.00%2100.00%






static inline int de_is_running (struct de_private *de)
{
	return (dr32(MacStatus) & (RxState | TxState)) ? 1 : 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds30100.00%1100.00%


Total30100.00%1100.00%






static void de_stop_rxtx (struct de_private *de)
{
	u32 macmode;
	unsigned int i = 1300/100;

	macmode = dr32(MacMode);
	if (macmode & RxTx) {
		dw32(MacMode, macmode & ~RxTx);
		dr32(MacMode);
	}

	/* wait until in-flight frame completes.
         * Max time @ 10BT: 1500*8b/10Mbps == 1200us (+ 100us margin)
         * Typically expect this loop to end in < 50 us on 100BT.
         */
	while (--i) {
		if (!de_is_running(de))
			return;
		udelay(100);
	}

	netdev_warn(de->dev, "timeout expired, stopping DMA\n");
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds7084.34%125.00%


Grant Grundler1012.05%125.00%


Joe Perches33.61%250.00%


Total83100.00%4100.00%






static inline void de_start_rxtx (struct de_private *de)
{
	u32 macmode;

	macmode = dr32(MacMode);
	if ((macmode & RxTx) != RxTx) {
		dw32(MacMode, macmode | RxTx);
		dr32(MacMode);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds48100.00%1100.00%


Total48100.00%1100.00%






static void de_stop_hw (struct de_private *de)
{

	udelay(5);
	dw32(IntrMask, 0);

	de_stop_rxtx(de);

	dw32(MacStatus, dr32(MacStatus));

	udelay(10);

	de->rx_tail = 0;
	de->tx_head = de->tx_tail = 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds59100.00%1100.00%


Total59100.00%1100.00%






static void de_link_up(struct de_private *de)
{
	if (!netif_carrier_ok(de->dev)) {
		netif_carrier_on(de->dev);
		netif_info(de, link, de->dev, "link up, media %s\n",
			   media_name[de->media_type]);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds4488.00%133.33%


Joe Perches612.00%266.67%


Total50100.00%3100.00%






static void de_link_down(struct de_private *de)
{
	if (netif_carrier_ok(de->dev)) {
		netif_carrier_off(de->dev);
		netif_info(de, link, de->dev, "link down\n");
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds3685.71%133.33%


Joe Perches614.29%266.67%


Total42100.00%3100.00%






static void de_set_media (struct de_private *de)
{
	unsigned media = de->media_type;
	u32 macmode = dr32(MacMode);

	if (de_is_running(de))
		netdev_warn(de->dev, "chip is running while changing media!\n");

	if (de->de21040)
		dw32(CSR11, FULL_DUPLEX_MAGIC);
	dw32(CSR13, 0); /* Reset phy */
	dw32(CSR14, de->media[media].csr14);
	dw32(CSR15, de->media[media].csr15);
	dw32(CSR13, de->media[media].csr13);

	/* must delay 10ms before writing to other registers,
         * especially CSR6
         */
	mdelay(10);

	if (media == DE_MEDIA_TP_FD)
		macmode |= FullDuplex;
	else
		macmode &= ~FullDuplex;

	netif_info(de, link, de->dev, "set link %s\n", media_name[media]);
	netif_info(de, hw, de->dev, "mode 0x%x, sia 0x%x,0x%x,0x%x,0x%x\n",
		   dr32(MacMode), dr32(SIAStatus),
		   dr32(CSR13), dr32(CSR14), dr32(CSR15));
	netif_info(de, hw, de->dev, "set mode 0x%x, set sia 0x%x,0x%x,0x%x\n",
		   macmode, de->media[media].csr13,
		   de->media[media].csr14, de->media[media].csr15);
	if (macmode != dr32(MacMode))
		dw32(MacMode, macmode);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds17974.27%225.00%


Joe Perches2811.62%225.00%


Krzysztof Hałasa249.96%112.50%


Ondrej Zary93.73%225.00%


Eric Sesterhenn / Snakebyte10.41%112.50%


Total241100.00%8100.00%






static void de_next_media (struct de_private *de, const u32 *media,
			   unsigned int n_media)
{
	unsigned int i;

	for (i = 0; i < n_media; i++) {
		if (de_ok_to_advertise(de, media[i])) {
			de->media_type = media[i];
			return;
		}
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds6298.41%150.00%


Joe Perches11.59%150.00%


Total63100.00%2100.00%






static void de21040_media_timer (unsigned long data)
{
	struct de_private *de = (struct de_private *) data;
	struct net_device *dev = de->dev;
	u32 status = dr32(SIAStatus);
	unsigned int carrier;
	unsigned long flags;

	carrier = (status & NetCxnErr) ? 0 : 1;

	if (carrier) {
		if (de->media_type != DE_MEDIA_AUI && (status & LinkFailStatus))
			goto no_link_yet;

		de->media_timer.expires = jiffies + DE_TIMER_LINK;
		add_timer(&de->media_timer);
		if (!netif_carrier_ok(dev))
			de_link_up(de);
		else
			netif_info(de, timer, dev, "%s link ok, status %x\n",
				   media_name[de->media_type], status);
		return;
	}

	de_link_down(de);

	if (de->media_lock)
		return;

	if (de->media_type == DE_MEDIA_AUI) {
		static const u32 next_state = DE_MEDIA_TP;
		de_next_media(de, &next_state, 1);
	} else {
		static const u32 next_state = DE_MEDIA_AUI;
		de_next_media(de, &next_state, 1);
	}

	spin_lock_irqsave(&de->lock, flags);
	de_stop_rxtx(de);
	spin_unlock_irqrestore(&de->lock, flags);
	de_set_media(de);
	de_start_rxtx(de);

no_link_yet:
	de->media_timer.expires = jiffies + DE_TIMER_NO_LINK;
	add_timer(&de->media_timer);

	netif_info(de, timer, dev, "no link, trying media %s, status %x\n",
		   media_name[de->media_type], status);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds25092.94%240.00%


Joe Perches197.06%360.00%


Total269100.00%5100.00%






static unsigned int de_ok_to_advertise (struct de_private *de, u32 new_media)
{
	switch (new_media) {
	case DE_MEDIA_TP_AUTO:
		if (!(de->media_advertise & ADVERTISED_Autoneg))
			return 0;
		if (!(de->media_advertise & (ADVERTISED_10baseT_Half | ADVERTISED_10baseT_Full)))
			return 0;
		break;
	case DE_MEDIA_BNC:
		if (!(de->media_advertise & ADVERTISED_BNC))
			return 0;
		break;
	case DE_MEDIA_AUI:
		if (!(de->media_advertise & ADVERTISED_AUI))
			return 0;
		break;
	case DE_MEDIA_TP:
		if (!(de->media_advertise & ADVERTISED_10baseT_Half))
			return 0;
		break;
	case DE_MEDIA_TP_FD:
		if (!(de->media_advertise & ADVERTISED_10baseT_Full))
			return 0;
		break;
	}

	return 1;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds132100.00%1100.00%


Total132100.00%1100.00%






static void de21041_media_timer (unsigned long data)
{
	struct de_private *de = (struct de_private *) data;
	struct net_device *dev = de->dev;
	u32 status = dr32(SIAStatus);
	unsigned int carrier;
	unsigned long flags;

	/* clear port active bits */
	dw32(SIAStatus, NonselPortActive | SelPortActive);

	carrier = (status & NetCxnErr) ? 0 : 1;

	if (carrier) {
		if ((de->media_type == DE_MEDIA_TP_AUTO ||
		     de->media_type == DE_MEDIA_TP ||
		     de->media_type == DE_MEDIA_TP_FD) &&
		    (status & LinkFailStatus))
			goto no_link_yet;

		de->media_timer.expires = jiffies + DE_TIMER_LINK;
		add_timer(&de->media_timer);
		if (!netif_carrier_ok(dev))
			de_link_up(de);
		else
			netif_info(de, timer, dev,
				   "%s link ok, mode %x status %x\n",
				   media_name[de->media_type],
				   dr32(MacMode), status);
		return;
	}

	de_link_down(de);

	/* if media type locked, don't switch media */
	if (de->media_lock)
		goto set_media;

	/* if activity detected, use that as hint for new media type */
	if (status & NonselPortActive) {
		unsigned int have_media = 1;

		/* if AUI/BNC selected, then activity is on TP port */
		if (de->media_type == DE_MEDIA_AUI ||
		    de->media_type == DE_MEDIA_BNC) {
			if (de_ok_to_advertise(de, DE_MEDIA_TP_AUTO))
				de->media_type = DE_MEDIA_TP_AUTO;
			else
				have_media = 0;
		}

		/* TP selected.  If there is only TP and BNC, then it's BNC */
		else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_BNC) &&
			 de_ok_to_advertise(de, DE_MEDIA_BNC))
			de->media_type = DE_MEDIA_BNC;

		/* TP selected.  If there is only TP and AUI, then it's AUI */
		else if (((de->media_supported & DE_AUI_BNC) == SUPPORTED_AUI) &&
			 de_ok_to_advertise(de, DE_MEDIA_AUI))
			de->media_type = DE_MEDIA_AUI;

		/* otherwise, ignore the hint */
		else
			have_media = 0;

		if (have_media)
			goto set_media;
	}

	/*
         * Absent or ambiguous activity hint, move to next advertised
         * media state.  If de->media_type is left unchanged, this
         * simply resets the PHY and reloads the current media settings.
         */
	if (de->media_type == DE_MEDIA_AUI) {
		static const u32 next_states[] = {
			DE_MEDIA_BNC, DE_MEDIA_TP_AUTO
		};
		de_next_media(de, next_states, ARRAY_SIZE(next_states));
	} else if (de->media_type == DE_MEDIA_BNC) {
		static const u32 next_states[] = {
			DE_MEDIA_TP_AUTO, DE_MEDIA_AUI
		};
		de_next_media(de, next_states, ARRAY_SIZE(next_states));
	} else {
		static const u32 next_states[] = {
			DE_MEDIA_AUI, DE_MEDIA_BNC, DE_MEDIA_TP_AUTO
		};
		de_next_media(de, next_states, ARRAY_SIZE(next_states));
	}

set_media:
	spin_lock_irqsave(&de->lock, flags);
	de_stop_rxtx(de);
	spin_unlock_irqrestore(&de->lock, flags);
	de_set_media(de);
	de_start_rxtx(de);

no_link_yet:
	de->media_timer.expires = jiffies + DE_TIMER_NO_LINK;
	add_timer(&de->media_timer);

	netif_info(de, timer, dev, "no link, trying media %s, status %x\n",
		   media_name[de->media_type], status);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds44793.51%233.33%


Joe Perches214.39%350.00%


Ondrej Zary102.09%116.67%


Total478100.00%6100.00%






static void de_media_interrupt (struct de_private *de, u32 status)
{
	if (status & LinkPass) {
		/* Ignore if current media is AUI or BNC and we can't use TP */
		if ((de->media_type == DE_MEDIA_AUI ||
		     de->media_type == DE_MEDIA_BNC) &&
		    (de->media_lock ||
		     !de_ok_to_advertise(de, DE_MEDIA_TP_AUTO)))
			return;
		/* If current media is not TP, change it to TP */
		if ((de->media_type == DE_MEDIA_AUI ||
		     de->media_type == DE_MEDIA_BNC)) {
			de->media_type = DE_MEDIA_TP_AUTO;
			de_stop_rxtx(de);
			de_set_media(de);
			de_start_rxtx(de);
		}
		de_link_up(de);
		mod_timer(&de->media_timer, jiffies + DE_TIMER_LINK);
		return;
	}

	BUG_ON(!(status & LinkFail));
	/* Mark the link as down only if current media is TP */
	if (netif_carrier_ok(de->dev) && de->media_type != DE_MEDIA_AUI &&
	    de->media_type != DE_MEDIA_BNC) {
		de_link_down(de);
		mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Ondrej Zary8552.15%133.33%


Linus Torvalds7546.01%133.33%


Eric Sesterhenn / Snakebyte31.84%133.33%


Total163100.00%3100.00%






static int de_reset_mac (struct de_private *de)
{
	u32 status, tmp;

	/*
         * Reset MAC.  de4x5.c and tulip.c examined for "advice"
         * in this area.
         */

	if (dr32(BusMode) == 0xffffffff)
		return -EBUSY;

	/* Reset the chip, holding bit 0 set at least 50 PCI cycles. */
	dw32 (BusMode, CmdReset);
	mdelay (1);

	dw32 (BusMode, de_bus_mode);
	mdelay (1);

	for (tmp = 0; tmp < 5; tmp++) {
		dr32 (BusMode);
		mdelay (1);
	}

	mdelay (1);

	status = dr32(MacStatus);
	if (status & (RxState | TxState))
		return -EBUSY;
	if (status == 0xffffffff)
		return -ENODEV;
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds11394.96%266.67%


Jeff Garzik65.04%133.33%


Total119100.00%3100.00%






static void de_adapter_wake (struct de_private *de)
{
	u32 pmctl;

	if (de->de21040)
		return;

	pci_read_config_dword(de->pdev, PCIPM, &pmctl);
	if (pmctl & PM_Mask) {
		pmctl &= ~PM_Mask;
		pci_write_config_dword(de->pdev, PCIPM, pmctl);

		/* de4x5.c delays, so we do too */
		msleep(10);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds6298.41%150.00%


Nishanth Aravamudan11.59%150.00%


Total63100.00%2100.00%






static void de_adapter_sleep (struct de_private *de)
{
	u32 pmctl;

	if (de->de21040)
		return;

	dw32(CSR13, 0); /* Reset phy */
	pci_read_config_dword(de->pdev, PCIPM, &pmctl);
	pmctl |= PM_Sleep;
	pci_write_config_dword(de->pdev, PCIPM, pmctl);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds4885.71%150.00%


Ondrej Zary814.29%150.00%


Total56100.00%2100.00%






static int de_init_hw (struct de_private *de)
{
	struct net_device *dev = de->dev;
	u32 macmode;
	int rc;

	de_adapter_wake(de);

	macmode = dr32(MacMode) & ~MacModeClear;

	rc = de_reset_mac(de);
	if (rc)
		return rc;

	de_set_media(de); /* reset phy */

	dw32(RxRingAddr, de->ring_dma);
	dw32(TxRingAddr, de->ring_dma + (sizeof(struct de_desc) * DE_RX_RING_SIZE));

	dw32(MacMode, RxTx | macmode);

	dr32(RxMissed); /* self-clearing */

	dw32(IntrMask, de_intr_mask);

	de_set_rx_mode(dev);

	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds11697.48%150.00%


Krzysztof Hałasa32.52%150.00%


Total119100.00%2100.00%






static int de_refill_rx (struct de_private *de)
{
	unsigned i;

	for (i = 0; i < DE_RX_RING_SIZE; i++) {
		struct sk_buff *skb;

		skb = netdev_alloc_skb(de->dev, de->rx_buf_sz);
		if (!skb)
			goto err_out;

		de->rx_skb[i].mapping = pci_map_single(de->pdev,
			skb->data, de->rx_buf_sz, PCI_DMA_FROMDEVICE);
		de->rx_skb[i].skb = skb;

		de->rx_ring[i].opts1 = cpu_to_le32(DescOwn);
		if (i == (DE_RX_RING_SIZE - 1))
			de->rx_ring[i].opts2 =
				cpu_to_le32(RingEnd | de->rx_buf_sz);
		else
			de->rx_ring[i].opts2 = cpu_to_le32(de->rx_buf_sz);
		de->rx_ring[i].addr1 = cpu_to_le32(de->rx_skb[i].mapping);
		de->rx_ring[i].addr2 = 0;
	}

	return 0;

err_out:
	de_clean_rings(de);
	return -ENOMEM;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds19196.95%133.33%


Pradeep A. Dalvi52.54%133.33%


David S. Miller10.51%133.33%


Total197100.00%3100.00%






static int de_init_rings (struct de_private *de)
{
	memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE);
	de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);

	de->rx_tail = 0;
	de->tx_head = de->tx_tail = 0;

	return de_refill_rx (de);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds66100.00%1100.00%


Total66100.00%1100.00%






static int de_alloc_rings (struct de_private *de)
{
	de->rx_ring = pci_alloc_consistent(de->pdev, DE_RING_BYTES, &de->ring_dma);
	if (!de->rx_ring)
		return -ENOMEM;
	de->tx_ring = &de->rx_ring[DE_RX_RING_SIZE];
	return de_init_rings(de);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds58100.00%1100.00%


Total58100.00%1100.00%






static void de_clean_rings (struct de_private *de)
{
	unsigned i;

	memset(de->rx_ring, 0, sizeof(struct de_desc) * DE_RX_RING_SIZE);
	de->rx_ring[DE_RX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
	wmb();
	memset(de->tx_ring, 0, sizeof(struct de_desc) * DE_TX_RING_SIZE);
	de->tx_ring[DE_TX_RING_SIZE - 1].opts2 = cpu_to_le32(RingEnd);
	wmb();

	for (i = 0; i < DE_RX_RING_SIZE; i++) {
		if (de->rx_skb[i].skb) {
			pci_unmap_single(de->pdev, de->rx_skb[i].mapping,
					 de->rx_buf_sz, PCI_DMA_FROMDEVICE);
			dev_kfree_skb(de->rx_skb[i].skb);
		}
	}

	for (i = 0; i < DE_TX_RING_SIZE; i++) {
		struct sk_buff *skb = de->tx_skb[i].skb;
		if ((skb) && (skb != DE_DUMMY_SKB)) {
			if (skb != DE_SETUP_SKB) {
				de->net_stats.tx_dropped++;
				pci_unmap_single(de->pdev,
					de->tx_skb[i].mapping,
					skb->len, PCI_DMA_TODEVICE);
				dev_kfree_skb(skb);
			} else {
				pci_unmap_single(de->pdev,
					de->tx_skb[i].mapping,
					sizeof(de->setup_frame),
					PCI_DMA_TODEVICE);
			}
		}
	}

	memset(&de->rx_skb, 0, sizeof(struct ring_info) * DE_RX_RING_SIZE);
	memset(&de->tx_skb, 0, sizeof(struct ring_info) * DE_TX_RING_SIZE);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds29298.32%266.67%


Eric Sesterhenn / Snakebyte51.68%133.33%


Total297100.00%3100.00%






static void de_free_rings (struct de_private *de)
{
	de_clean_rings(de);
	pci_free_consistent(de->pdev, DE_RING_BYTES, de->rx_ring, de->ring_dma);
	de->rx_ring = NULL;
	de->tx_ring = NULL;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds45100.00%1100.00%


Total45100.00%1100.00%






static int de_open (struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);
	const int irq = de->pdev->irq;
	int rc;

	netif_dbg(de, ifup, dev, "enabling interface\n");

	de->rx_buf_sz = (dev->mtu <= 1500 ? PKT_BUF_SZ : dev->mtu + 32);

	rc = de_alloc_rings(de);
	if (rc) {
		netdev_err(dev, "ring allocation failure, err=%d\n", rc);
		return rc;
	}

	dw32(IntrMask, 0);

	rc = request_irq(irq, de_interrupt, IRQF_SHARED, dev->name, dev);
	if (rc) {
		netdev_err(dev, "IRQ %d request failure, err=%d\n", irq, rc);
		goto err_out_free;
	}

	rc = de_init_hw(de);
	if (rc) {
		netdev_err(dev, "h/w init failure, err=%d\n", rc);
		goto err_out_free_irq;
	}

	netif_start_queue(dev);
	mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);

	return 0;

err_out_free_irq:
	free_irq(irq, dev);
err_out_free:
	de_free_rings(de);
	return rc;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds13970.20%222.22%


François Romieu3718.69%222.22%


Joe Perches189.09%333.33%


Wang Chen31.52%111.11%


Thomas Gleixner10.51%111.11%


Total198100.00%9100.00%






static int de_close (struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);
	unsigned long flags;

	netif_dbg(de, ifdown, dev, "disabling interface\n");

	del_timer_sync(&de->media_timer);

	spin_lock_irqsave(&de->lock, flags);
	de_stop_hw(de);
	netif_stop_queue(dev);
	netif_carrier_off(dev);
	spin_unlock_irqrestore(&de->lock, flags);

	free_irq(de->pdev->irq, dev);

	de_free_rings(de);
	de_adapter_sleep(de);
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds9188.35%233.33%


Joe Perches65.83%233.33%


François Romieu32.91%116.67%


Wang Chen32.91%116.67%


Total103100.00%6100.00%






static void de_tx_timeout (struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);
	const int irq = de->pdev->irq;

	netdev_dbg(dev, "NIC status %08x mode %08x sia %08x desc %u/%u/%u\n",
		   dr32(MacStatus), dr32(MacMode), dr32(SIAStatus),
		   de->rx_tail, de->tx_head, de->tx_tail);

	del_timer_sync(&de->media_timer);

	disable_irq(irq);
	spin_lock_irq(&de->lock);

	de_stop_hw(de);
	netif_stop_queue(dev);
	netif_carrier_off(dev);

	spin_unlock_irq(&de->lock);
	enable_irq(irq);

	/* Update the error counts. */
	__de_get_stats(de);

	synchronize_irq(irq);
	de_clean_rings(de);

	de_init_rings(de);

	de_init_hw(de);

	netif_wake_queue(dev);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds12485.52%228.57%


François Romieu1510.34%228.57%


Wang Chen32.07%114.29%


Joe Perches32.07%228.57%


Total145100.00%7100.00%






static void __de_get_regs(struct de_private *de, u8 *buf)
{
	int i;
	u32 *rbuf = (u32 *)buf;

	/* read all CSRs */
	for (i = 0; i < DE_NUM_REGS; i++)
		rbuf[i] = dr32(i * 8);

	/* handle self-clearing RxMissed counter, CSR8 */
	de_rx_missed(de, rbuf[8]);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds6396.92%150.00%


Jeff Garzik23.08%150.00%


Total65100.00%2100.00%






static int __de_get_link_ksettings(struct de_private *de,
				   struct ethtool_link_ksettings *cmd)
{
	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.supported,
						de->media_supported);
	cmd->base.phy_address = 0;
	ethtool_convert_legacy_u32_to_link_mode(cmd->link_modes.advertising,
						de->media_advertise);

	switch (de->media_type) {
	case DE_MEDIA_AUI:
		cmd->base.port = PORT_AUI;
		break;
	case DE_MEDIA_BNC:
		cmd->base.port = PORT_BNC;
		break;
	default:
		cmd->base.port = PORT_TP;
		break;
	}

	cmd->base.speed = 10;

	if (dr32(MacMode) & FullDuplex)
		cmd->base.duplex = DUPLEX_FULL;
	else
		cmd->base.duplex = DUPLEX_HALF;

	if (de->media_lock)
		cmd->base.autoneg = AUTONEG_DISABLE;
	else
		cmd->base.autoneg = AUTONEG_ENABLE;

	/* ignore maxtxpkt, maxrxpkt for now */

	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds9964.71%125.00%


Philippe Reynes4730.72%125.00%


Krzysztof Hałasa42.61%125.00%


David Decotigny31.96%125.00%


Total153100.00%4100.00%






static int __de_set_link_ksettings(struct de_private *de,
				   const struct ethtool_link_ksettings *cmd)
{
	u32 new_media;
	unsigned int media_lock;
	u8 duplex = cmd->base.duplex;
	u8 port = cmd->base.port;
	u8 autoneg = cmd->base.autoneg;
	u32 advertising;

	ethtool_convert_link_mode_to_legacy_u32(&advertising,
						cmd->link_modes.advertising);

	if (cmd->base.speed != 10)
		return -EINVAL;
	if (duplex != DUPLEX_HALF && duplex != DUPLEX_FULL)
		return -EINVAL;
	if (port != PORT_TP && port != PORT_AUI && port != PORT_BNC)
		return -EINVAL;
	if (de->de21040 && port == PORT_BNC)
		return -EINVAL;
	if (autoneg != AUTONEG_DISABLE && autoneg != AUTONEG_ENABLE)
		return -EINVAL;
	if (advertising & ~de->media_supported)
		return -EINVAL;
	if (autoneg == AUTONEG_ENABLE &&
	    (!(advertising & ADVERTISED_Autoneg)))
		return -EINVAL;

	switch (port) {
	case PORT_AUI:
		new_media = DE_MEDIA_AUI;
		if (!(advertising & ADVERTISED_AUI))
			return -EINVAL;
		break;
	case PORT_BNC:
		new_media = DE_MEDIA_BNC;
		if (!(advertising & ADVERTISED_BNC))
			return -EINVAL;
		break;
	default:
		if (autoneg == AUTONEG_ENABLE)
			new_media = DE_MEDIA_TP_AUTO;
		else if (duplex == DUPLEX_FULL)
			new_media = DE_MEDIA_TP_FD;
		else
			new_media = DE_MEDIA_TP;
		if (!(advertising & ADVERTISED_TP))
			return -EINVAL;
		if (!(advertising & (ADVERTISED_10baseT_Full |
				     ADVERTISED_10baseT_Half)))
			return -EINVAL;
		break;
	}

	media_lock = (autoneg == AUTONEG_ENABLE) ? 0 : 1;

	if ((new_media == de->media_type) &&
	    (media_lock == de->media_lock) &&
	    (advertising == de->media_advertise))
		return 0; /* nothing to change */

	de_link_down(de);
	mod_timer(&de->media_timer, jiffies + DE_TIMER_NO_LINK);
	de_stop_rxtx(de);

	de->media_type = new_media;
	de->media_lock = media_lock;
	de->media_advertise = advertising;
	de_set_media(de);
	if (netif_running(de->dev))
		de_start_rxtx(de);

	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds30279.06%120.00%


Philippe Reynes5113.35%120.00%


Ondrej Zary266.81%120.00%


David Decotigny30.79%240.00%


Total382100.00%5100.00%






static void de_get_drvinfo (struct net_device *dev,struct ethtool_drvinfo *info)
{
	struct de_private *de = netdev_priv(dev);

	strlcpy(info->driver, DRV_NAME, sizeof(info->driver));
	strlcpy(info->version, DRV_VERSION, sizeof(info->version));
	strlcpy(info->bus_info, pci_name(de->pdev), sizeof(info->bus_info));
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds3443.04%120.00%


Rick Jones2430.38%120.00%


Jeff Garzik1518.99%120.00%


Randy Dunlap33.80%120.00%


Wang Chen33.80%120.00%


Total79100.00%5100.00%






static int de_get_regs_len(struct net_device *dev)
{
	return DE_REGS_SIZE;
}


Contributors
PersonTokensPropCommitsCommitProp
Jeff Garzik1178.57%150.00%


Linus Torvalds321.43%150.00%


Total14100.00%2100.00%






static int de_get_link_ksettings(struct net_device *dev,
				 struct ethtool_link_ksettings *cmd)
{
	struct de_private *de = netdev_priv(dev);
	int rc;

	spin_lock_irq(&de->lock);
	rc = __de_get_link_ksettings(de, cmd);
	spin_unlock_irq(&de->lock);

	return rc;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds2747.37%125.00%


Jeff Garzik2238.60%125.00%


Philippe Reynes58.77%125.00%


Wang Chen35.26%125.00%


Total57100.00%4100.00%






static int de_set_link_ksettings(struct net_device *dev,
				 const struct ethtool_link_ksettings *cmd)
{
	struct de_private *de = netdev_priv(dev);
	int rc;

	spin_lock_irq(&de->lock);
	rc = __de_set_link_ksettings(de, cmd);
	spin_unlock_irq(&de->lock);

	return rc;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds2950.00%125.00%


Jeff Garzik2034.48%125.00%


Philippe Reynes610.34%125.00%


Wang Chen35.17%125.00%


Total58100.00%4100.00%






static u32 de_get_msglevel(struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);

	return de->msg_enable;
}


Contributors
PersonTokensPropCommitsCommitProp
Jeff Garzik1869.23%133.33%


Linus Torvalds519.23%133.33%


Wang Chen311.54%133.33%


Total26100.00%3100.00%






static void de_set_msglevel(struct net_device *dev, u32 msglvl)
{
	struct de_private *de = netdev_priv(dev);

	de->msg_enable = msglvl;
}


Contributors
PersonTokensPropCommitsCommitProp
Jeff Garzik2273.33%133.33%


Linus Torvalds516.67%133.33%


Wang Chen310.00%133.33%


Total30100.00%3100.00%






static int de_get_eeprom(struct net_device *dev,
			 struct ethtool_eeprom *eeprom, u8 *data)
{
	struct de_private *de = netdev_priv(dev);

	if (!de->ee_data)
		return -EOPNOTSUPP;
	if ((eeprom->offset != 0) || (eeprom->magic != 0) ||
	    (eeprom->len != DE_EEPROM_SIZE))
		return -EINVAL;
	memcpy(data, de->ee_data, eeprom->len);

	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds5057.47%250.00%


Jeff Garzik3439.08%125.00%


Wang Chen33.45%125.00%


Total87100.00%4100.00%






static int de_nway_reset(struct net_device *dev)
{
	struct de_private *de = netdev_priv(dev);
	u32 status;

	if (de->media_type != DE_MEDIA_TP_AUTO)
		return -EINVAL;
	if (netif_carrier_ok(de->dev))
		de_link_down(de);

	status = dr32(SIAStatus);
	dw32(SIAStatus, (status & ~NWayState) | NWayRestart);
	netif_info(de, link, dev, "link nway restart, status %x,%x\n",
		   status, dr32(SIAStatus));
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Jeff Garzik4650.00%120.00%


Linus Torvalds3639.13%120.00%


Joe Perches77.61%240.00%


Wang Chen33.26%120.00%


Total92100.00%5100.00%






static void de_get_regs(struct net_device *dev, struct ethtool_regs *regs,
			void *data)
{
	struct de_private *de = netdev_priv(dev);

	regs->version = (DE_REGS_VER << 2) | de->de21040;

	spin_lock_irq(&de->lock);
	__de_get_regs(de, data);
	spin_unlock_irq(&de->lock);
}


Contributors
PersonTokensPropCommitsCommitProp
Jeff Garzik6495.52%150.00%


Wang Chen34.48%150.00%


Total67100.00%2100.00%




static const struct ethtool_ops de_ethtool_ops = {
	.get_link		= ethtool_op_get_link,
	.get_drvinfo		= de_get_drvinfo,
	.get_regs_len		= de_get_regs_len,
	.get_msglevel		= de_get_msglevel,
	.set_msglevel		= de_set_msglevel,
	.get_eeprom		= de_get_eeprom,
	.nway_reset		= de_nway_reset,
	.get_regs		= de_get_regs,
	.get_link_ksettings	= de_get_link_ksettings,
	.set_link_ksettings	= de_set_link_ksettings,
};




static void de21040_get_mac_address(struct de_private *de)
{
	unsigned i;

	dw32 (ROMCmd, 0);	/* Reset the pointer with a dummy write. */
	udelay(5);

	for (i = 0; i < 6; i++) {
		int value, boguscnt = 100000;
		do {
			value = dr32(ROMCmd);
			rmb();
		} while (value < 0 && --boguscnt > 0);
		de->dev->dev_addr[i] = value;
		udelay(1);
		if (boguscnt <= 0)
			pr_warn("timeout reading 21040 MAC address byte %u\n",
				i);
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds8582.52%114.29%


Al Viro54.85%114.29%


Martin Langer54.85%114.29%


Joe Perches32.91%228.57%


Morten Holst Larsen32.91%114.29%


Hannes Eder21.94%114.29%


Total103100.00%7100.00%






static void de21040_get_media_info(struct de_private *de)
{
	unsigned int i;

	de->media_type = DE_MEDIA_TP;
	de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full |
			       SUPPORTED_10baseT_Half | SUPPORTED_AUI;
	de->media_advertise = de->media_supported;

	for (i = 0; i < DE_MAX_MEDIA; i++) {
		switch (i) {
		case DE_MEDIA_AUI:
		case DE_MEDIA_TP:
		case DE_MEDIA_TP_FD:
			de->media[i].type = i;
			de->media[i].csr13 = t21040_csr13[i];
			de->media[i].csr14 = t21040_csr14[i];
			de->media[i].csr15 = t21040_csr15[i];
			break;
		default:
			de->media[i].type = DE_MEDIA_INVALID;
			break;
		}
	}
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds138100.00%2100.00%


Total138100.00%2100.00%



/* Note: this routine returns extra data bits for size detection. */



static unsigned tulip_read_eeprom(void __iomem *regs, int location,
				  int addr_len)
{
	int i;
	unsigned retval = 0;
	void __iomem *ee_addr = regs + ROMCmd;
	int read_cmd = location | (EE_READ_CMD << addr_len);

	writel(EE_ENB & ~EE_CS, ee_addr);
	writel(EE_ENB, ee_addr);

	/* Shift the read command bits out. */
	for (i = 4 + addr_len; i >= 0; i--) {
		short dataval = (read_cmd & (1 << i)) ? EE_DATA_WRITE : 0;
		writel(EE_ENB | dataval, ee_addr);
		readl(ee_addr);
		writel(EE_ENB | dataval | EE_SHIFT_CLK, ee_addr);
		readl(ee_addr);
		retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0);
	}
	writel(EE_ENB, ee_addr);
	readl(ee_addr);

	for (i = 16; i > 0; i--) {
		writel(EE_ENB | EE_SHIFT_CLK, ee_addr);
		readl(ee_addr);
		retval = (retval << 1) | ((readl(ee_addr) & EE_DATA_READ) ? 1 : 0);
		writel(EE_ENB, ee_addr);
		readl(ee_addr);
	}

	/* Terminate the EEPROM access. */
	writel(EE_ENB & ~EE_CS, ee_addr);
	return retval;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds23899.17%266.67%


Al Viro20.83%133.33%


Total240100.00%3100.00%






static void de21041_get_srom_info(struct de_private *de)
{
	unsigned i, sa_offset = 0, ofs;
	u8 ee_data[DE_EEPROM_SIZE + 6] = {};
	unsigned ee_addr_size = tulip_read_eeprom(de->regs, 0xff, 8) & 0x40000 ? 8 : 6;
	struct de_srom_info_leaf *il;
	void *bufp;

	/* download entire eeprom */
	for (i = 0; i < DE_EEPROM_WORDS; i++)
		((__le16 *)ee_data)[i] =
			cpu_to_le16(tulip_read_eeprom(de->regs, i, ee_addr_size));

	/* DEC now has a specification but early board makers
           just put the address in the first EEPROM locations. */
	/* This does  memcmp(eedata, eedata+16, 8) */

#ifndef CONFIG_MIPS_COBALT

	for (i = 0; i < 8; i ++)
		if (ee_data[i] != ee_data[16+i])
			sa_offset = 20;

#endif

	/* store MAC address */
	for (i = 0; i < 6; i ++)
		de->dev->dev_addr[i] = ee_data[i + sa_offset];

	/* get offset of controller 0 info leaf.  ignore 2nd byte. */
	ofs = ee_data[SROMC0InfoLeaf];
	if (ofs >= (sizeof(ee_data) - sizeof(struct de_srom_info_leaf) - sizeof(struct de_srom_media_block)))
		goto bad_srom;

	/* get pointer to info leaf */
	il = (struct de_srom_info_leaf *) &ee_data[ofs];

	/* paranoia checks */
	if (il->n_blocks == 0)
		goto bad_srom;
	if ((sizeof(ee_data) - ofs) <
	    (sizeof(struct de_srom_info_leaf) + (sizeof(struct de_srom_media_block) * il->n_blocks)))
		goto bad_srom;

	/* get default media type */
	switch (get_unaligned(&il->default_media)) {
	case 0x0001:  de->media_type = DE_MEDIA_BNC; break;
	case 0x0002:  de->media_type = DE_MEDIA_AUI; break;
	case 0x0204:  de->media_type = DE_MEDIA_TP_FD; break;
	default: de->media_type = DE_MEDIA_TP_AUTO; break;
	}

	if (netif_msg_probe(de))
		pr_info("de%d: SROM leaf offset %u, default media %s\n",
		       de->board_idx, ofs, media_name[de->media_type]);

	/* init SIA register values to defaults */
	for (i = 0; i < DE_MAX_MEDIA; i++) {
		de->media[i].type = DE_MEDIA_INVALID;
		de->media[i].csr13 = 0xffff;
		de->media[i].csr14 = 0xffff;
		de->media[i].csr15 = 0xffff;
	}

	/* parse media blocks to see what medias are supported,
         * and if any custom CSR values are provided
         */
	bufp = ((void *)il) + sizeof(*il);
	for (i = 0; i < il->n_blocks; i++) {
		struct de_srom_media_block *ib = bufp;
		unsigned idx;

		/* index based on media type in media block */
		switch(ib->opts & MediaBlockMask) {
		case 0: /* 10baseT */
			de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Half
					  | SUPPORTED_Autoneg;
			idx = DE_MEDIA_TP;
			de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO;
			break;
		case 1: /* BNC */
			de->media_supported |= SUPPORTED_BNC;
			idx = DE_MEDIA_BNC;
			break;
		case 2: /* AUI */
			de->media_supported |= SUPPORTED_AUI;
			idx = DE_MEDIA_AUI;
			break;
		case 4: /* 10baseT-FD */
			de->media_supported |= SUPPORTED_TP | SUPPORTED_10baseT_Full
					  | SUPPORTED_Autoneg;
			idx = DE_MEDIA_TP_FD;
			de->media[DE_MEDIA_TP_AUTO].type = DE_MEDIA_TP_AUTO;
			break;
		default:
			goto bad_srom;
		}

		de->media[idx].type = idx;

		if (netif_msg_probe(de))
			pr_info("de%d:   media block #%u: %s",
				de->board_idx, i,
				media_name[de->media[idx].type]);

		bufp += sizeof (ib->opts);

		if (ib->opts & MediaCustomCSRs) {
			de->media[idx].csr13 = get_unaligned(&ib->csr13);
			de->media[idx].csr14 = get_unaligned(&ib->csr14);
			de->media[idx].csr15 = get_unaligned(&ib->csr15);
			bufp += sizeof(ib->csr13) + sizeof(ib->csr14) +
				sizeof(ib->csr15);

			if (netif_msg_probe(de))
				pr_cont(" (%x,%x,%x)\n",
					de->media[idx].csr13,
					de->media[idx].csr14,
					de->media[idx].csr15);

		} else {
			if (netif_msg_probe(de))
				pr_cont("\n");
		}

		if (bufp > ((void *)&ee_data[DE_EEPROM_SIZE - 3]))
			break;
	}

	de->media_advertise = de->media_supported;

fill_defaults:
	/* fill in defaults, for cases where custom CSRs not used */
	for (i = 0; i < DE_MAX_MEDIA; i++) {
		if (de->media[i].csr13 == 0xffff)
			de->media[i].csr13 = t21041_csr13[i];
		if (de->media[i].csr14 == 0xffff) {
			/* autonegotiation is broken at least on some chip
                           revisions - rev. 0x21 works, 0x11 does not */
			if (de->pdev->revision < 0x20)
				de->media[i].csr14 = t21041_csr14_brk[i];
			else
				de->media[i].csr14 = t21041_csr14[i];
		}
		if (de->media[i].csr15 == 0xffff)
			de->media[i].csr15 = t21041_csr15[i];
	}

	de->ee_data = kmemdup(&ee_data[0], DE_EEPROM_SIZE, GFP_KERNEL);

	return;

bad_srom:
	/* for error cases, it's ok to assume we support all these */
	for (i = 0; i < DE_MAX_MEDIA; i++)
		de->media[i].type = i;
	de->media_supported =
		SUPPORTED_10baseT_Half |
		SUPPORTED_10baseT_Full |
		SUPPORTED_Autoneg |
		SUPPORTED_TP |
		SUPPORTED_AUI |
		SUPPORTED_BNC;
	goto fill_defaults;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds90294.85%222.22%


Ondrej Zary282.94%111.11%


Joe Perches70.74%222.22%


Ralf Bächle50.53%111.11%


Harvey Harrison40.42%111.11%


Eric Sesterhenn / Snakebyte30.32%111.11%


Al Viro20.21%111.11%


Total951100.00%9100.00%




static const struct net_device_ops de_netdev_ops = {
	.ndo_open		= de_open,
	.ndo_stop		= de_close,
	.ndo_set_rx_mode	= de_set_rx_mode,
	.ndo_start_xmit		= de_start_xmit,
	.ndo_get_stats		= de_get_stats,
	.ndo_tx_timeout 	= de_tx_timeout,
	.ndo_set_mac_address 	= eth_mac_addr,
	.ndo_validate_addr	= eth_validate_addr,
};




static int de_init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
{
	struct net_device *dev;
	struct de_private *de;
	int rc;
	void __iomem *regs;
	unsigned long pciaddr;
	static int board_idx = -1;

	board_idx++;

#ifndef MODULE
	if (board_idx == 0)
		pr_info("%s\n", version);
#endif

	/* allocate a new ethernet device structure, and fill in defaults */
	dev = alloc_etherdev(sizeof(struct de_private));
	if (!dev)
		return -ENOMEM;

	dev->netdev_ops = &de_netdev_ops;
	SET_NETDEV_DEV(dev, &pdev->dev);
	dev->ethtool_ops = &de_ethtool_ops;
	dev->watchdog_timeo = TX_TIMEOUT;

	de = netdev_priv(dev);
	de->de21040 = ent->driver_data == 0 ? 1 : 0;
	de->pdev = pdev;
	de->dev = dev;
	de->msg_enable = (debug < 0 ? DE_DEF_MSG_ENABLE : debug);
	de->board_idx = board_idx;
	spin_lock_init (&de->lock);
	init_timer(&de->media_timer);
	if (de->de21040)
		de->media_timer.function = de21040_media_timer;
	else
		de->media_timer.function = de21041_media_timer;
	de->media_timer.data = (unsigned long) de;

	netif_carrier_off(dev);

	/* wake up device, assign resources */
	rc = pci_enable_device(pdev);
	if (rc)
		goto err_out_free;

	/* reserve PCI resources to ensure driver atomicity */
	rc = pci_request_regions(pdev, DRV_NAME);
	if (rc)
		goto err_out_disable;

	/* check for invalid IRQ value */
	if (pdev->irq < 2) {
		rc = -EIO;
		pr_err("invalid irq (%d) for pci dev %s\n",
		       pdev->irq, pci_name(pdev));
		goto err_out_res;
	}

	/* obtain and check validity of PCI I/O address */
	pciaddr = pci_resource_start(pdev, 1);
	if (!pciaddr) {
		rc = -EIO;
		pr_err("no MMIO resource for pci dev %s\n", pci_name(pdev));
		goto err_out_res;
	}
	if (pci_resource_len(pdev, 1) < DE_REGS_SIZE) {
		rc = -EIO;
		pr_err("MMIO resource (%llx) too small on pci dev %s\n",
		       (unsigned long long)pci_resource_len(pdev, 1),
		       pci_name(pdev));
		goto err_out_res;
	}

	/* remap CSR registers */
	regs = ioremap_nocache(pciaddr, DE_REGS_SIZE);
	if (!regs) {
		rc = -EIO;
		pr_err("Cannot map PCI MMIO (%llx@%lx) on pci dev %s\n",
		       (unsigned long long)pci_resource_len(pdev, 1),
		       pciaddr, pci_name(pdev));
		goto err_out_res;
	}
	de->regs = regs;

	de_adapter_wake(de);

	/* make sure hardware is not running */
	rc = de_reset_mac(de);
	if (rc) {
		pr_err("Cannot reset MAC, pci dev %s\n", pci_name(pdev));
		goto err_out_iomap;
	}

	/* get MAC address, initialize default media type and
         * get list of supported media
         */
	if (de->de21040) {
		de21040_get_mac_address(de);
		de21040_get_media_info(de);
	} else {
		de21041_get_srom_info(de);
	}

	/* register new network interface with kernel */
	rc = register_netdev(dev);
	if (rc)
		goto err_out_iomap;

	/* print info about board and interface just registered */
	netdev_info(dev, "%s at %p, %pM, IRQ %d\n",
		    de->de21040 ? "21040" : "21041",
		    regs, dev->dev_addr, pdev->irq);

	pci_set_drvdata(pdev, dev);

	/* enable busmastering */
	pci_set_master(pdev);

	/* put adapter to sleep */
	de_adapter_sleep(de);

	return 0;

err_out_iomap:
	kfree(de->ee_data);
	iounmap(regs);
err_out_res:
	pci_release_regions(pdev);
err_out_disable:
	pci_disable_device(pdev);
err_out_free:
	free_netdev(dev);
	return rc;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds49584.62%214.29%


Joe Perches5910.09%321.43%


Stephen Hemminger172.91%214.29%


Jeff Garzik40.68%214.29%


François Romieu30.51%17.14%


Wang Chen30.51%17.14%


Al Viro20.34%214.29%


Greg Kroah-Hartman20.34%17.14%


Total585100.00%14100.00%






static void de_remove_one(struct pci_dev *pdev)
{
	struct net_device *dev = pci_get_drvdata(pdev);
	struct de_private *de = netdev_priv(dev);

	BUG_ON(!dev);
	unregister_netdev(dev);
	kfree(de->ee_data);
	iounmap(de->regs);
	pci_release_regions(pdev);
	pci_disable_device(pdev);
	free_netdev(dev);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds6490.14%240.00%


Wang Chen34.23%120.00%


Eric Sesterhenn / Snakebyte34.23%120.00%


Stephen Hemminger11.41%120.00%


Total71100.00%5100.00%



#ifdef CONFIG_PM




static int de_suspend (struct pci_dev *pdev, pm_message_t state)
{
	struct net_device *dev = pci_get_drvdata (pdev);
	struct de_private *de = netdev_priv(dev);

	rtnl_lock();
	if (netif_running (dev)) {
		const int irq = pdev->irq;

		del_timer_sync(&de->media_timer);

		disable_irq(irq);
		spin_lock_irq(&de->lock);

		de_stop_hw(de);
		netif_stop_queue(dev);
		netif_device_detach(dev);
		netif_carrier_off(dev);

		spin_unlock_irq(&de->lock);
		enable_irq(irq);

		/* Update the error counts. */
		__de_get_stats(de);

		synchronize_irq(irq);
		de_clean_rings(de);

		de_adapter_sleep(de);
		pci_disable_device(pdev);
	} else {
		netif_device_detach(dev);
	}
	rtnl_unlock();
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds13289.19%116.67%


François Romieu85.41%116.67%


Alan Cox32.03%116.67%


Wang Chen32.03%116.67%


David S. Miller10.68%116.67%


Pavel Machek10.68%116.67%


Total148100.00%6100.00%






static int de_resume (struct pci_dev *pdev)
{
	struct net_device *dev = pci_get_drvdata (pdev);
	struct de_private *de = netdev_priv(dev);
	int retval = 0;

	rtnl_lock();
	if (netif_device_present(dev))
		goto out;
	if (!netif_running(dev))
		goto out_attach;
	if ((retval = pci_enable_device(pdev))) {
		netdev_err(dev, "pci_enable_device failed in resume\n");
		goto out;
	}
	pci_set_master(pdev);
	de_init_rings(de);
	de_init_hw(de);
out_attach:
	netif_device_attach(dev);
out:
	rtnl_unlock();
	return 0;
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds7061.95%114.29%


Valerie Henson2522.12%114.29%


Ondrej Zary108.85%114.29%


Joe Perches43.54%228.57%


Wang Chen32.65%114.29%


David S. Miller10.88%114.29%


Total113100.00%7100.00%



#endif /* CONFIG_PM */


static struct pci_driver de_driver = {
	.name		= DRV_NAME,
	.id_table	= de_pci_tbl,
	.probe		= de_init_one,
	.remove		= de_remove_one,
#ifdef CONFIG_PM
	.suspend	= de_suspend,
	.resume		= de_resume,
#endif
};




static int __init de_init (void)
{
#ifdef MODULE
	pr_info("%s\n", version);
#endif
	return pci_register_driver(&de_driver);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds2589.29%133.33%


Joe Perches27.14%133.33%


Jeff Garzik13.57%133.33%


Total28100.00%3100.00%






static void __exit de_exit (void)
{
	pci_unregister_driver (&de_driver);
}


Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds15100.00%1100.00%


Total15100.00%1100.00%




module_init(de_init);

module_exit(de_exit);

Overall Contributors
PersonTokensPropCommitsCommitProp
Linus Torvalds938086.77%67.32%


Jeff Garzik3243.00%78.54%


Joe Perches2492.30%67.32%


Ondrej Zary2041.89%67.32%


Philippe Reynes1191.10%11.22%


Wang Chen660.61%11.22%


François Romieu660.61%33.66%


Stephen Hemminger660.61%44.88%


Risto Suominen540.50%22.44%


Krzysztof Hałasa390.36%11.22%


Jiri Pirko320.30%44.88%


Valerie Henson250.23%11.22%


Rick Jones240.22%11.22%


Andrew Morton220.20%22.44%


Eric Sesterhenn / Snakebyte210.19%33.66%


Al Viro160.15%44.88%


Rusty Russell120.11%11.22%


Pradeep A. Dalvi100.09%11.22%


Grant Grundler100.09%11.22%


Benoit Taine60.06%11.22%


David Decotigny60.06%22.44%


Martin Langer50.05%11.22%


Ralf Bächle50.05%11.22%


John W. Linville50.05%11.22%


David S. Miller50.05%33.66%


Morten Holst Larsen50.05%11.22%


Harvey Harrison40.04%11.22%


Alexey Dobriyan30.03%11.22%


Tejun Heo30.03%11.22%


Arnaldo Carvalho de Melo30.03%11.22%


Alan Cox30.03%11.22%


Randy Dunlap30.03%11.22%


Takuya Yoshikawa20.02%11.22%


Eric Dumazet20.02%11.22%


Greg Kroah-Hartman20.02%11.22%


Patrick McHardy20.02%22.44%


Hannes Eder20.02%11.22%


Pavel Machek10.01%11.22%


Nishanth Aravamudan10.01%11.22%


Marc Zyngier10.01%11.22%


Roel Kluin10.01%11.22%


Thomas Gleixner10.01%11.22%


Total10810100.00%82100.00%


Directory: drivers/net/ethernet/dec/tulip



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